WebAPI: Cache metadata using TorrentID

`m_torrentMetadataCache` previously used a torrent's InfoHash as its key. However, InfoHashes for hybrid torrents cannot be serialized and deserialized via their TorrentID (e.g. `InfoHash(TorrentID(infoHash.toTorrentID().toString())) != infoHash`). This is due to hybrid InfoHashes containing both a v1 and v2 hash, while the serialized TorrentID only contains a single truncated v2 hash. Thus we cannot expect an InfoHash serialized by its TorrentID to be able to construct an equivalent InfoHash. By switching to the TorrentID, we always have a single ID to use.

Follow up #21015.
PR #22926.

.github/FUNDING.yml

@@ -1 +1 @@
-custom: "https://www.qbittorrent.org/donate.php"
+custom: "https://www.qbittorrent.org/donate"

.github/workflows/ci_file_health.yaml

@@ -36,7 +36,7 @@ jobs:
           curl \
             -L \
             -o "${{ runner.temp }}/pandoc.tar.gz" \
-            "https://github.com/jgm/pandoc/releases/download/3.6/pandoc-3.6-linux-amd64.tar.gz"
+            "https://github.com/jgm/pandoc/releases/download/3.7.0.2/pandoc-3.7.0.2-linux-amd64.tar.gz"
           tar -xf "${{ runner.temp }}/pandoc.tar.gz" -C "${{ github.workspace }}/.."
           mv "${{ github.workspace }}/.."/pandoc-* "${{ env.pandoc_path }}"
           # run pandoc
@@ -52,13 +52,13 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           pip install zizmor
-          IGNORE_RULEID='(.ruleId != "template-injection")
+          IGNORE_RULEID='(.ruleId != "zizmor/template-injection")
-            and (.ruleId != "unpinned-uses")'
+            and (.ruleId != "zizmor/unpinned-uses")'
-          IGNORE_ID='(.id != "template-injection")
+          IGNORE_ID='(.id != "zizmor/template-injection")
-            and (.id != "unpinned-uses")'
+            and (.id != "zizmor/unpinned-uses")'
           zizmor \
             --format sarif \
-            --pedantic \
+            --persona auditor \
             ./ \
             | jq "(.runs[].results |= map(select($IGNORE_RULEID)))
               | (.runs[].tool.driver.rules |= map(select($IGNORE_ID)))" \

.github/workflows/ci_macos.yaml

@@ -20,7 +20,7 @@ jobs:
       matrix:
         libt_version: ["2.0.11", "1.2.20"]
         qbt_gui: ["GUI=ON", "GUI=OFF"]
-        qt_version: ["6.7.0"]
+        qt_version: ["6.9.1"]
 
     env:
       boost_path: "${{ github.workspace }}/../boost"
@@ -52,7 +52,7 @@ jobs:
           store_cache: ${{ github.ref == 'refs/heads/master' }}
           update_packager_index: false
           ccache_options: |
-            max_size=2G
+            max_size=1G
 
       - name: Install boost
         env:
@@ -70,6 +70,9 @@ jobs:
             tar -xf "${{ runner.temp }}/boost.tar.gz" -C "${{ github.workspace }}/.."; _exitCode="$?"
           fi
           mv "${{ github.workspace }}/.."/boost_* "${{ env.boost_path }}"
+          cd "${{ env.boost_path }}"
+          ./bootstrap.sh
+          ./b2 stage --stagedir=./ --with-headers
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
@@ -95,7 +98,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
             -DCMAKE_CXX_STANDARD=20 \
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -Ddeprecated-functions=OFF
           cmake --build build
           sudo cmake --install build
@@ -109,7 +112,7 @@ jobs:
             -G "Ninja" \
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -DTESTING=ON \
             -DVERBOSE_CONFIGURE=ON \
             -D${{ matrix.qbt_gui }}

.github/workflows/ci_python.yaml

@@ -25,7 +25,7 @@ jobs:
           python-version: '3'  # use default version
 
       - name: Install tools (auxiliary scripts)
-        run: pip install bandit pycodestyle pyflakes
+        run: pip install bandit isort pycodestyle pyflakes
 
       - name: Gather files (auxiliary scripts)
         run: |
@@ -44,6 +44,10 @@ jobs:
             --max-line-length=1000 \
             --statistics \
             $PY_FILES
+          isort \
+             --check \
+             --diff \
+             $PY_FILES
 
       - name: Build code (auxiliary scripts)
         run: |
@@ -55,7 +59,7 @@ jobs:
           python-version: '3.9'
 
       - name: Install tools (search engine)
-        run: pip install bandit mypy pycodestyle pyflakes pyright
+        run: pip install bandit isort mypy pycodestyle pyflakes pyright
 
       - name: Gather files (search engine)
         run: |
@@ -85,6 +89,10 @@ jobs:
             --max-line-length=1000 \
             --statistics \
             $PY_FILES
+          isort \
+             --check \
+             --diff \
+             $PY_FILES
 
       - name: Build code (search engine)
         run: |

.github/workflows/ci_ubuntu.yaml

@@ -21,7 +21,7 @@ jobs:
       matrix:
         libt_version: ["2.0.11", "1.2.20"]
         qbt_gui: ["GUI=ON", "GUI=OFF"]
-        qt_version: ["6.5.2"]
+        qt_version: ["6.6.3"]
 
     env:
       boost_path: "${{ github.workspace }}/../boost"
@@ -47,7 +47,7 @@ jobs:
           store_cache: ${{ github.ref == 'refs/heads/master' }}
           update_packager_index: false
           ccache_options: |
-            max_size=2G
+            max_size=1G
 
       - name: Install boost
         env:
@@ -65,6 +65,9 @@ jobs:
             tar -xf "${{ runner.temp }}/boost.tar.gz" -C "${{ github.workspace }}/.."; _exitCode="$?"
           fi
           mv "${{ github.workspace }}/.."/boost_* "${{ env.boost_path }}"
+          cd "${{ env.boost_path }}"
+          ./bootstrap.sh
+          ./b2 stage --stagedir=./ --with-headers
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
@@ -90,7 +93,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
             -DCMAKE_CXX_STANDARD=20 \
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -Ddeprecated-functions=OFF
           cmake --build build
           sudo cmake --install build
@@ -112,7 +115,7 @@ jobs:
             -G "Ninja" \
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -DCMAKE_INSTALL_PREFIX="/usr" \
             -DTESTING=ON \
             -DVERBOSE_CONFIGURE=ON \
@@ -159,6 +162,7 @@ jobs:
 
       - name: Package AppImage
         run: |
+          rm -f "${{ runner.workspace }}/Qt/${{ matrix.qt_version }}/gcc_64/plugins/sqldrivers/libqsqlmimer.so"
           ./linuxdeploy-x86_64.AppImage --appdir qbittorrent --plugin qt
           rm qbittorrent/apprun-hooks/*
           cp .github/workflows/helper/appimage/export_vars.sh qbittorrent/apprun-hooks/export_vars.sh

.github/workflows/ci_webui.yaml

@@ -34,7 +34,12 @@ jobs:
         run: |
           npm install
           npm ls
+          echo "::group::npm ls --all"
           npm ls --all
+          echo "::endgroup::"
+
+      - name: Run tests
+        run: npm test
 
       - name: Lint code
         run: npm run lint

.github/workflows/ci_windows.yaml

@@ -67,6 +67,7 @@ jobs:
               "set(VCPKG_BUILD_TYPE release)")
           # clear buildtrees after each package installation to reduce disk space requirements
           $packages = `
+            "boost-build:x64-windows-static-md-release",
             "openssl:x64-windows-static-md-release",
             "zlib:x64-windows-static-md-release"
           ${{ env.vcpkg_path }}/vcpkg.exe upgrade `
@@ -94,11 +95,18 @@ jobs:
             tar -xf "${{ runner.temp }}/boost.tar.gz" -C "${{ github.workspace }}/.."
           }
           move "${{ github.workspace }}/../boost_*" "${{ env.boost_path }}"
+          cd "${{ env.boost_path }}"
+          #.\bootstrap.bat
+          ${{ env.vcpkg_path }}/installed/x64-windows-static-md-release/tools/boost-build/b2.exe `
+            stage `
+            toolset=msvc `
+            --stagedir=.\ `
+            --with-headers
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
         with:
-          version: "6.8.0"
+          version: "6.9.1"
           arch: win64_msvc2022_64
           archives: qtbase qtsvg qttools
           cache: true
@@ -113,7 +121,7 @@ jobs:
             ${{ env.libtorrent_path }}
           cd ${{ env.libtorrent_path }}
           $env:CXXFLAGS+=" /guard:cf"
-          $env:LDFLAGS+=" /guard:cf"
+          $env:LDFLAGS+=" /GUARD:CF"
           cmake `
             -B build `
             -G "Ninja" `
@@ -122,7 +130,7 @@ jobs:
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON `
             -DCMAKE_INSTALL_PREFIX="${{ env.libtorrent_path }}/install" `
             -DCMAKE_TOOLCHAIN_FILE="${{ env.vcpkg_path }}/scripts/buildsystems/vcpkg.cmake" `
-            -DBOOST_ROOT="${{ env.boost_path }}" `
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" `
             -DBUILD_SHARED_LIBS=OFF `
             -Ddeprecated-functions=OFF `
             -Dstatic_runtime=OFF `
@@ -139,7 +147,7 @@ jobs:
             -DCMAKE_BUILD_TYPE=RelWithDebInfo `
             -DCMAKE_EXPORT_COMPILE_COMMANDS=ON `
             -DCMAKE_TOOLCHAIN_FILE="${{ env.vcpkg_path }}/scripts/buildsystems/vcpkg.cmake" `
-            -DBOOST_ROOT="${{ env.boost_path }}" `
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" `
             -DLibtorrentRasterbar_DIR="${{ env.libtorrent_path }}/install/lib/cmake/LibtorrentRasterbar" `
             -DMSVC_RUNTIME_DYNAMIC=ON `
             -DTESTING=ON `

.github/workflows/coverity-scan.yaml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         libt_version: ["2.0.11"]
         qbt_gui: ["GUI=ON"]
-        qt_version: ["6.5.2"]
+        qt_version: ["6.9.1"]
 
     env:
       boost_path: "${{ github.workspace }}/../boost"
@@ -39,7 +39,7 @@ jobs:
       - name: Install boost
         env:
           BOOST_MAJOR_VERSION: "1"
-          BOOST_MINOR_VERSION: "86"
+          BOOST_MINOR_VERSION: "88"
           BOOST_PATCH_VERSION: "0"
         run: |
           boost_url="https://archives.boost.io/release/${{ env.BOOST_MAJOR_VERSION }}.${{ env.BOOST_MINOR_VERSION }}.${{ env.BOOST_PATCH_VERSION }}/source/boost_${{ env.BOOST_MAJOR_VERSION }}_${{ env.BOOST_MINOR_VERSION }}_${{ env.BOOST_PATCH_VERSION }}.tar.gz"
@@ -52,6 +52,9 @@ jobs:
             tar -xf "${{ runner.temp }}/boost.tar.gz" -C "${{ github.workspace }}/.."; _exitCode="$?"
           fi
           mv "${{ github.workspace }}/.."/boost_* "${{ env.boost_path }}"
+          cd "${{ env.boost_path }}"
+          ./bootstrap.sh
+          ./b2 stage --stagedir=./ --with-headers
 
       - name: Install Qt
         uses: jurplel/install-qt-action@v4
@@ -74,7 +77,7 @@ jobs:
             -G "Ninja" \
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
             -DCMAKE_CXX_STANDARD=20 \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -Ddeprecated-functions=OFF
           cmake --build build
           sudo cmake --install build
@@ -98,7 +101,7 @@ jobs:
             -B build \
             -G "Ninja" \
             -DCMAKE_BUILD_TYPE=RelWithDebInfo \
-            -DBOOST_ROOT="${{ env.boost_path }}" \
+            -DBOOST_ROOT="${{ env.boost_path }}/lib/cmake" \
             -DVERBOSE_CONFIGURE=ON \
             -D${{ matrix.qbt_gui }}
           PATH="${{ env.coverity_path }}/bin:$PATH" \

.github/workflows/helper/pre-commit/check_grid_items_order.py

@@ -26,12 +26,12 @@
 # but you are not obligated to do so. If you do not wish to do so, delete this
 # exception statement from your version.
 
-from collections.abc import Callable, Sequence
-from typing import Optional
 import argparse
 import re
-import xml.etree.ElementTree as ElementTree
 import sys
+import xml.etree.ElementTree as ElementTree
+from collections.abc import Callable, Sequence
+from typing import Optional
 
 
 def traversePostOrder(root: ElementTree.Element, visitFunc: Callable[[ElementTree.Element], None]) -> None:

.github/workflows/helper/pre-commit/check_translation_tag.py

@@ -26,11 +26,11 @@
 # but you are not obligated to do so. If you do not wish to do so, delete this
 # exception statement from your version.
 
-from collections.abc import Sequence
-from typing import Optional
 import argparse
 import re
 import sys
+from collections.abc import Sequence
+from typing import Optional
 
 
 def main(argv: Optional[Sequence[str]] = None) -> int:

.pre-commit-config.yaml

@@ -69,11 +69,11 @@ repos:
         - ts
 
   - repo: https://github.com/codespell-project/codespell.git
-    rev: v2.4.0
+    rev: v2.4.1
     hooks:
     - id: codespell
       name: Check spelling (codespell)
-      args: ["--ignore-words-list", "additionals,categor,curren,fo,ist,ket,notin,searchin,sectionin,superseeding,te,ths"]
+      args: ["--ignore-words-list", "additionals,categor,curren,fo,indexIn,ist,ket,notin,searchin,sectionin,superseeding,te,ths"]
       exclude: |
         (?x)^(
           .*\.desktop |
@@ -88,7 +88,7 @@ repos:
         - ts
 
   - repo: https://github.com/crate-ci/typos.git
-    rev: v1.29.4
+    rev: v1.32.0
     hooks:
     - id: typos
       name: Check spelling (typos)

.tx/config

@@ -1,7 +1,7 @@
 [main]
 host = https://www.transifex.com
 
-[o:sledgehammer999:p:qbittorrent:r:qbittorrent_v51x]
+[o:sledgehammer999:p:qbittorrent:r:qbittorrent_master]
 file_filter  = src/lang/qbittorrent_<lang>.ts
 source_file  = src/lang/qbittorrent_en.ts
 source_lang  = en
@@ -9,7 +9,7 @@ type         = QT
 minimum_perc = 23
 lang_map     = pt: pt_PT, zh: zh_CN
 
-[o:sledgehammer999:p:qbittorrent:r:qbittorrent_webui_v51x]
+[o:sledgehammer999:p:qbittorrent:r:qbittorrent_webui]
 file_filter  = src/webui/www/translations/webui_<lang>.ts
 source_file  = src/webui/www/translations/webui_en.ts
 source_lang  = en

CMakeLists.txt

@@ -8,7 +8,7 @@ project(qBittorrent
 
 # version requirements - older versions may work, but you are on your own
 set(minBoostVersion 1.76)
-set(minQt6Version 6.5.0)
+set(minQt6Version 6.6.0)
 set(minOpenSSLVersion 3.0.2)
 set(minLibtorrent1Version 1.2.19)
 set(minLibtorrentVersion 2.0.10)

Changelog

@@ -1,113 +1,4 @@
-Mon Jun 23rd 2025 - sledgehammer999 <sledgehammer999@qbittorrent.org> - v5.1.1
+Unreleased - sledgehammer999 <sledgehammer999@qbittorrent.org> - v5.1.0
-    - BUGFIX: Don't interpret wildcard pattern as filepath globbing (glassez)
-    - BUGFIX: Fix appearance of search history length spinbox (glassez)
-    - BUGFIX: Remove dubious seeding time max value (glassez)
-    - BUGFIX: Fix ratio handling (glassez)
-    - BUGFIX: Fix compilation with Qt 6.6.0 (glassez)
-    - WEBUI: Make General tab text selectable by default (dezza)
-    - WEBUI: Add versioning to local preferences (Chocobo1)
-    - WEBUI: Make multi-rename search & replace fields use a monospace font (Atk)
-    - WEBUI: Fix wrong replacement sequence in IPv6 string (Chocobo1)
-    - WEBUI: Fix memory leak (bolshoytoster)
-    - WEBUI: Fix path autofill in set location and new category (tehcneko)
-    - RSS: Mark matched article as "read" if it refers to a duplicate torrent (glassez)
-    - WINDOWS: Update command line help message (KanishkaHalder1771)
-    - WINDOWS: NSIS: Don't require agreement on the license page (Chocobo1)
-    - LINUX: Fix preview not opening on Wayland (Isak05)
-    - LINUX: Add fallback for random number generator (Chocobo1)
-
-Sun Apr 27th 2025 - sledgehammer999 <sledgehammer999@qbittorrent.org> - v5.1.0
-    - FEATURE: Enable customizing the save statistics time interval (Burnerelu)
-    - FEATURE: Add drag support to torrent content widget (Chocobo1)
-    - FEATURE: Display External IP Address in status bar (Thomas Piccirello)
-    - FEATURE: Use modern functions to get random numbers under Linux/Windows (security related) (Chocobo1)
-    - FEATURE: Add eXact Length parameter when creating magnet URI (antanilol)
-    - FEATURE: Support fetching tracker list from URL (Thomas Piccirello)
-    - FEATURE: Add `announce_port` support (Maxime Thiebaut)
-    - BUGFIX: Enable adaptive step size for upload and download limits (Harald Nordgren)
-    - BUGFIX: Add URL link for reverse proxy setup examples (Chocobo1)
-    - BUGFIX: Allow drop action only on transfer list (Chocobo1)
-    - BUGFIX: Fix the tab order in dialogs (thalieht)
-    - BUGFIX: Fix filesize sorting in preview dialog (DoubleSpicy)
-    - BUGFIX: Improve the speed icons in the status bar (Mahdi Hosseinzadeh)
-    - BUGFIX: Update link to news (tinyboxvk)
-    - BUGFIX: Fix tab stop order in various dialogs and UI elements (Chocobo1)
-    - BUGFIX: Make links accessible by keyboard (Chocobo1)
-    - BUGFIX: Make tab key switch focus (Chocobo1)
-    - BUGFIX: Revise DHT bootstrap node list (stalkerok, Chocobo1)
-    - BUGFIX: Return first tracker as fallback for "current tracker" (glassez)
-    - BUGFIX: Prevent crash when exiting app with `Add torrent` dialogs opened (glassez)
-    - BUGFIX: Fix torrent relocating files when switching to "manual" mode (glassez)
-    - BUGFIX: Prevent crash due to corrupted resume data (glassez)
-    - WEBUI: Improvements that should help with assistive technologies (Chocobo1)
-    - WEBUI: Internal refactoring to migrate away from MooTools and towards native browser APIs (Chocobo1, skomerko)
-    - WEBUI: Implement path autocompletion (Paweł Kotiuk)
-    - WEBUI: Implement double-click behavior controls (Hanabishi)
-    - WEBUI: Add ability to toggle alternating row colors in tables (skomerko)
-    - WEBUI: Improve visibility of unread RSS articles (skomerko)
-    - WEBUI: Remove deleted torrents even if they are currently filtered out (Carmelo Scandaliato)
-    - WEBUI: Highlight torrent category in context menu (skomerko)
-    - WEBUI: Implement 'Auto hide zero status filters' (skomerko)
-    - WEBUI: Allow to filter torrent list by save path (skomerko)
-    - WEBUI: Handle regex syntax error for torrent filtering (HamletDuFromage)
-    - WEBUI: Add missing icons (skomerko)
-    - WEBUI: Add link to 'List of alternative WebUI' wiki page in Options (Chocobo1)
-    - WEBUI: Improve properties panel, torrent deletion dialog, filter list, subcategories, torrent deletion, statistics window (skomerko)
-    - WEBUI: Allow to display only hostname in the Tracker column (skomerko)
-    - WEBUI: Show country/region name next to its flag (skomerko)
-    - WEBUI: Improve hash copy actions in context menu (skomerko)
-    - WEBUI: Support removing tracker from all torrents in WebUI/WebAPI (Thomas Piccirello)
-    - WEBUI: Display DHT information in the Status bar only when DHT is enabled (skomerko)
-    - WEBUI: Add 'Confirm torrent recheck' option (skomerko)
-    - WEBUI: Support managing web seeds (Thomas Piccirello)
-    - WEBUI: Add colors to log table rows (skomerko)
-    - WEBUI: Prevent text selection within tabs, menu items (skomerko)
-    - WEBUI: Use correct text and background colors in RSS details view (skomerko)
-    - WEBUI: Reduce padding in torrents table (skomerko)
-    - WEBUI: Add WebAPI/WebUI for managing cookies (Thomas Piccirello)
-    - WEBUI: Support updating RSS feed URL (Thomas Piccirello)
-    - WEBUI: Add 'Engine' column to Search table (skomerko)
-    - WEBUI: Add confirm dialog for Auto TMM (skomerko)
-    - WEBUI: Add context menu to search tabs (skomerko)
-    - WEBUI: Show file filter when Content tab selected on load (Thomas Piccirello)
-    - WEBUI: DHT, PeX and LSD rows are now always on top in Trackers table (skomerko)
-    - WEBUI: Clear properties panel when torrent no longer selected (skomerko)
-    - WEBUI: Support auto resizing table columns (Thomas Piccirello)
-    - WEBUI: Fix displaying RSS panel on load (Thomas Piccirello)
-    - WEBUI: Add tooltip to regex filter button (Patrik Elfström)
-    - WEBUI: Hide context menu when clicking on a table row (Patrik Elfström)
-    - WEBUI: Display torrent progress percentage in General tab (skomerko)
-    - WEBUI: Use thin scrollbars (skomerko)
-    - WEBUI: Show 'Rename...' context menu item only when one torrent is selected (skomerko)
-    - WEBUI: Display error when download fails (Thomas Piccirello)
-    - WEBUI: Add colors to 'Status' column in Trackers table (skomerko)
-    - WEBUI: Add missing icon to 'Queue' context menu item (skomerko)
-    - WEBUI: Change filter inputs to type search (Patrik Elfström)
-    - WEBUI: Allow to move state icon to name column in torrents table (skomerko)
-    - WEBUI: Fix bug where the 'Tracker editing' dialog displays incorrect data (skomerko)
-    - WEBUI: Maintain row highlight after rearranging table columns (skomerko)
-    - WEBUI: Fix preferences not applied in magnet handler (Chocobo1)
-    - WEBUI: Update sort icon after changing column order (skomerko)
-    - WEBUI: Show 'Edit tracker URL...' only when one tracker is selected (skomerko)
-    - WEBUI: Set status filter to 'All' if selected filter is no longer visible (skomerko)
-    - WEBAPI: Don't reannounce when removing tracker via WebAPI (Thomas Piccirello)
-    - WEBAPI: Add WebAPI for managing torrent webseeds (Thomas Piccirello)
-    - WEBAPI: Add `forced` parameter to `torrents/add` (Chris B)
-    - WEBAPI: Optionally include trackers list in torrent info response (ze0s)
-    - WEBAPI: Add new method `setTags` to upsert tags on torrents (ze0s)
-    - RSS: Resolve relative URLs within RSS article description (Zentino)
-    - SEARCH: Provide SSL context field (Chocobo1)
-    - SEARCH: Allow to refresh existing search (glassez)
-    - SEARCH: Allow multiple simultaneous searches (glassez)
-    - SEARCH: Store opened search tabs (glassez)
-    - SEARCH: Store search history (glassez)
-    - SEARCH: Migrate socks.py from SocksiPy to PySocks 1.7.1 (FredBill1)
-    - SEARCH: Bump Python version minimum requirement (Chocobo1)
-    - WINDOWS: Opt into Windows SegmentHeap (Andarwinux)
-    - WINDOWS: Allow to choose color scheme on Windows (glassez)
-    - WINDOWS: Verify hash of Python installer (Chocobo1)
-    - LINUX: Add support for Thunar file manager (algebnaly)
-    - MACOS: Fix shift-click selection on macOS (Luke Memet)
 
 Mon Oct 28th 2024 - sledgehammer999 <sledgehammer999@qbittorrent.org> - v5.0.1
     - FEATURE: Add "Simple pread/pwrite" disk IO type (Hanabishi)

INSTALL

@@ -11,7 +11,7 @@ qBittorrent - A BitTorrent client in C++ / Qt
 
   - OpenSSL >= 3.0.2
 
-  - Qt 6.5.0 - 6.x
+  - Qt 6.6.0 - 6.x
 
   - zlib >= 1.2.11
 

WebAPI_Changelog.md

@@ -0,0 +1,39 @@
+# WebAPI Changelog
+
+## 2.11.9
+
+* [#21015](https://github.com/qbittorrent/qBittorrent/pull/21015)
+  * Add `torrents/fetchMetadata` endpoint for retrieving torrent metadata associated with a URL
+  * Add `torrents/parseMetadata` endpoint for retrieving torrent metadata associated with a .torrent file
+  * Add `torrents/saveMetadata` endpoint for saving retrieved torrent metadata to a .torrent file
+  * `torrents/add` allows adding a torrent with metadata previously retrieved via `torrents/fetchMetadata` or `torrents/parseMetadata`
+  * `torrents/add` allows specifying a torrent's file priorities
+* [#22698](https://github.com/qbittorrent/qBittorrent/pull/22698)
+  * `torrents/addTrackers` and `torrents/removeTrackers` now accept `hash=all` and adds/removes the tracker to/from *all* torrents
+    * For compatibility, `torrents/removeTrackers` still accepts `hash=*` internally we transform it into `all`
+  * Allow passing a pipe (`|`) separated list of hashes in `hash` for `torrents/addTrackers` and `torrents/removeTrackers`
+
+## 2.11.8
+
+* [#21349](https://github.com/qbittorrent/qBittorrent/pull/21349)
+  * Handle sending `204 No Content` status code when response contains no data
+    * Some endpoints still return `200 OK` to ensure smooth transition
+* [#22750](https://github.com/qbittorrent/qBittorrent/pull/22750)
+  * `torrents/info` allows an optional parameter `includeFiles` that defaults to `false`
+    * Each torrent will contain a new key `files` which will list all files similar to the `torrents/files` endpoint
+* [#22813](https://github.com/qbittorrent/qBittorrent/pull/22813)
+  * `app/getDirectoryContent` allows an optional parameter `withMetadata` to send file metadata
+    * Fields are `name`, `type`, `size`, `creation_date`, `last_access_date`, `last_modification_date`
+    * See PR for TypeScript types
+
+## 2.11.7
+
+* [#22166](https://github.com/qbittorrent/qBittorrent/pull/22166)
+  * `sync/maindata` returns 3 new torrent fields: `has_tracker_warning`, `has_tracker_error`, `has_other_announce_error`
+
+## 2.11.6
+
+* [#22460](https://github.com/qbittorrent/qBittorrent/pull/22460)
+  * `app/setPreferences` allows only one of `max_ratio_enabled`, `max_ratio` to be present
+  * `app/setPreferences` allows only one of `max_seeding_time_enabled`, `max_seeding_time` to be present
+  * `app/setPreferences` allows only one of `max_inactive_seeding_time_enabled`, `max_inactive_seeding_time` to be present

cmake/Modules/CheckPackages.cmake

@@ -47,6 +47,9 @@ find_package(Boost ${minBoostVersion} REQUIRED)
 find_package(OpenSSL ${minOpenSSLVersion} REQUIRED)
 find_package(ZLIB ${minZlibVersion} REQUIRED)
 find_package(Qt6 ${minQt6Version} REQUIRED COMPONENTS Core Network Sql Xml LinguistTools)
+if (Qt6_FOUND AND (Qt6_VERSION VERSION_GREATER_EQUAL 6.10))
+    find_package(Qt6 ${minQt6Version} REQUIRED COMPONENTS CorePrivate)
+endif()
 if (DBUS)
     find_package(Qt6 ${minQt6Version} REQUIRED COMPONENTS DBus)
     set_package_properties(Qt6DBus PROPERTIES

cmake/Modules/CommonConfig.cmake

@@ -20,7 +20,7 @@ target_compile_features(qbt_common_cfg INTERFACE
 )
 
 target_compile_definitions(qbt_common_cfg INTERFACE
-    QT_DISABLE_DEPRECATED_UP_TO=0x060500
+    QT_DISABLE_DEPRECATED_UP_TO=0x060600
     QT_NO_CAST_FROM_ASCII
     QT_NO_CAST_TO_ASCII
     QT_NO_CAST_FROM_BYTEARRAY
@@ -89,7 +89,7 @@ if (MSVC)
         /Zc:__cplusplus
     )
     target_link_options(qbt_common_cfg INTERFACE
-        /guard:cf
+        /GUARD:CF
         $<$<NOT:$<CONFIG:Debug>>:/OPT:REF /OPT:ICF>
         # suppress linking warning due to /INCREMENTAL and /OPT:ICF being both ON
         $<$<CONFIG:RelWithDebInfo>:/INCREMENTAL:NO>

dist/mac/Info.plist

@@ -55,7 +55,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>5.1.1</string>
+	<string>5.2.0</string>
 	<key>CFBundleExecutable</key>
 	<string>${EXECUTABLE_NAME}</string>
 	<key>CFBundleIdentifier</key>

dist/unix/CMakeLists.txt

@@ -34,12 +34,12 @@ endforeach()
 
 if (GUI)
     install(FILES org.qbittorrent.qBittorrent.desktop
-        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications/
+        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications
         COMPONENT data
     )
 
     install(FILES org.qbittorrent.qBittorrent.metainfo.xml
-        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/metainfo/
+        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/metainfo
         COMPONENT data
     )
 
@@ -55,4 +55,9 @@ if (GUI)
         DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/scalable/status
         COMPONENT data
     )
+else()
+    install(FILES org.qbittorrent.qBittorrent-nox.metainfo.xml
+        DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/metainfo
+        COMPONENT data
+    )
 endif()

dist/unix/org.qbittorrent.qBittorrent-nox.metainfo.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2014 sledgehammer999 <sledgehammer999@qbittorrent.org> -->
+<component type="console-application">
+  <id>org.qbittorrent.qBittorrent-nox</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>GPL-3.0-or-later and OpenSSL</project_license>
+  <name>qBittorrent-nox</name>
+  <summary>An open-source Bittorrent client (nox version)</summary>
+  <description>
+    <p>
+      The qBittorrent project aims to provide an open-source software alternative to µTorrent.
+      Additionally, qBittorrent runs and provides the same features on all major platforms (FreeBSD, Linux, macOS, OS/2, Windows).
+      qBittorrent is based on the Qt toolkit and libtorrent-rasterbar library.
+    </p>
+    <ul>
+      <li>Polished µTorrent-like User Interface</li>
+      <li>Well-integrated and extensible Search Engine</li>
+      <li>RSS feed support with advanced download filters (incl. regex)</li>
+      <li>Many Bittorrent extensions supported</li>
+      <li>Remote control through Web user interface, written with AJAX</li>
+      <li>Sequential downloading (Download in order)</li>
+      <li>Advanced control over torrents, trackers and peers</li>
+      <li>Bandwidth scheduler</li>
+      <li>Torrent creation tool</li>
+      <li>IP Filtering (eMule &amp; PeerGuardian format compatible)</li>
+      <li>IPv6 compliant</li>
+      <li>UPnP / NAT-PMP port forwarding support</li>
+      <li>Available on all platforms: Windows, Linux, macOS, FreeBSD, OS/2</li>
+      <li>Available in ~70 languages</li>
+    </ul>
+  </description>
+  <provides>
+    <binary>qbittorrent-nox</binary>
+  </provides>
+  <screenshots>
+    <screenshot type="default">
+      <caption>Running headless (nox) version</caption>
+      <image>https://raw.githubusercontent.com/qbittorrent/qBittorrent-website/43fcf4550f567c38fb879b984922b659e90982cc/src/img/screenshots/linux/5.webp</image>
+    </screenshot>
+  </screenshots>
+  <update_contact>sledgehammer999@qbittorrent.org</update_contact>
+  <developer id="org.qbittorrent">
+    <name>The qBittorrent Project</name>
+  </developer>
+  <url type="homepage">https://www.qbittorrent.org/</url>
+  <url type="bugtracker">https://bugs.qbittorrent.org/</url>
+  <url type="faq">https://wiki.qbittorrent.org/Frequently-Asked-Questions</url>
+  <url type="help">https://forum.qbittorrent.org/</url>
+  <url type="donation">https://www.qbittorrent.org/donate</url>
+  <url type="translate">https://wiki.qbittorrent.org/How-to-translate-qBittorrent</url>
+  <url type="vcs-browser">https://github.com/qbittorrent/qBittorrent</url>
+  <url type="contribute">https://github.com/qbittorrent/qBittorrent/blob/master/CONTRIBUTING.md</url>
+  <content_rating type="oars-1.1"/>
+  <releases>
+    <release version="5.2.0~alpha1" date="2025-02-11"/>
+  </releases>
+</component>

dist/unix/org.qbittorrent.qBittorrent.metainfo.xml

@@ -62,6 +62,6 @@
   <url type="contribute">https://github.com/qbittorrent/qBittorrent/blob/master/CONTRIBUTING.md</url>
   <content_rating type="oars-1.1"/>
   <releases>
-    <release version="5.1.1" date="2025-06-23"/>
+    <release version="5.2.0~alpha1" date="2025-02-11"/>
   </releases>
 </component>

dist/windows/config.nsh

@@ -14,7 +14,7 @@
 ; 4.5.1.3 -> good
 ; 4.5.1.3.2 -> bad
 ; 4.5.0beta -> bad
-!define /ifndef QBT_VERSION "5.1.1"
+!define /ifndef QBT_VERSION "5.2.0"
 
 ; Option that controls the installer's window name
 ; If set, its value will be used like this:

doc/en/qbittorrent-nox.1

@@ -1,4 +1,4 @@
-.\" Automatically generated by Pandoc 3.4
+.\" Automatically generated by Pandoc 3.7.0.2
 .\"
 .TH "QBITTORRENT\-NOX" "1" "January 16th 2010" "Command line Bittorrent client written in C++ / Qt"
 .SH NAME
@@ -26,7 +26,7 @@ compatible).
 qBittorrent\-nox is meant to be controlled via its feature\-rich Web UI
 which is accessible as a default on http://localhost:8080.
 The Web UI access is secured and the default account user name is
-\[lq]admin\[rq] with \[lq]adminadmin\[rq] as a password.
+\(lqadmin\(rq with \(lqadminadmin\(rq as a password.
 .SH OPTIONS
 \f[B]\f[CB]\-\-help\f[B]\f[R] Prints the command line options.
 .PP

doc/en/qbittorrent.1

@@ -1,4 +1,4 @@
-.\" Automatically generated by Pandoc 3.4
+.\" Automatically generated by Pandoc 3.7.0.2
 .\"
 .TH "QBITTORRENT" "1" "January 16th 2010" "Bittorrent client written in C++ / Qt"
 .SH NAME

doc/ru/qbittorrent-nox.1

@@ -1,8 +1,8 @@
-.\" Automatically generated by Pandoc 3.4
+.\" Automatically generated by Pandoc 3.7.0.2
 .\"
 .TH "QBITTORRENT\-NOX" "1" "16 января 2010" "Клиент сети БитТоррент для командной строки"
 .SH НАЗВАНИЕ
-qBittorrent\-nox \[em] клиент сети БитТоррент для командной строки.
+qBittorrent\-nox \(em клиент сети БитТоррент для командной строки.
 .SH АВТОРЫ
 Christophe Dumez \c
 .MT chris@qbittorrent.org

doc/ru/qbittorrent.1

@@ -1,8 +1,8 @@
-.\" Automatically generated by Pandoc 3.4
+.\" Automatically generated by Pandoc 3.7.0.2
 .\"
 .TH "QBITTORRENT" "1" "16 января 2010" "Клиент сети БитТоррент"
 .SH НАЗВАНИЕ
-qBittorrent \[em] клиент сети БитТоррент.
+qBittorrent \(em клиент сети БитТоррент.
 .SH АВТОРЫ
 Christophe Dumez \c
 .MT chris@qbittorrent.org

src/app/application.cpp

@@ -410,7 +410,7 @@ void Application::setMemoryWorkingSetLimit(const int size)
         return;
 
     m_storeMemoryWorkingSetLimit = size;
-#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_MACOS)
+#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_LINUX) && !defined(Q_OS_MACOS)
     applyMemoryWorkingSetLimit();
 #endif
 }
@@ -575,6 +575,9 @@ void Application::runExternalProgram(const QString &programTemplate, const BitTo
             case u'L':
                 str.replace(i, 2, torrent->category());
                 break;
+            case u'M':
+                str.replace(i, 2, torrent->comment());
+                break;
             case u'N':
                 str.replace(i, 2, torrent->name());
                 break;
@@ -659,7 +662,13 @@ void Application::runExternalProgram(const QString &programTemplate, const BitTo
     {
         // strip redundant quotes
         if (arg.startsWith(u'"') && arg.endsWith(u'"'))
-            arg = arg.mid(1, (arg.size() - 2));
+        {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+            arg.slice(1, (arg.size() - 2));
+#else
+            arg.removeLast().removeFirst();
+#endif
+        }
 
         arg = replaceVariables(arg);
     }
@@ -668,6 +677,7 @@ void Application::runExternalProgram(const QString &programTemplate, const BitTo
     QProcess proc;
     proc.setProgram(command);
     proc.setArguments(args);
+    proc.setUnixProcessParameters(QProcess::UnixProcessFlag::CloseFileDescriptors);
 
     if (proc.startDetached())
     {
@@ -837,7 +847,7 @@ int Application::exec()
     printf("%s\n", qUtf8Printable(loadingStr));
 #endif
 
-#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_MACOS)
+#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_LINUX) && !defined(Q_OS_MACOS)
     applyMemoryWorkingSetLimit();
 #endif
 
@@ -1195,7 +1205,7 @@ void Application::shutdownCleanup([[maybe_unused]] QSessionManager &manager)
 }
 #endif
 
-#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_MACOS)
+#if defined(QBT_USES_LIBTORRENT2) && !defined(Q_OS_LINUX) && !defined(Q_OS_MACOS)
 void Application::applyMemoryWorkingSetLimit() const
 {
     const size_t MiB = 1024 * 1024;

src/app/cmdoptions.cpp

@@ -465,13 +465,13 @@ QBtCommandLineParameters parseCommandLine(const QStringList &args)
     return result;
 }
 
-QString wrapText(const QString &text, int initialIndentation = USAGE_TEXT_COLUMN, int wrapAtColumn = WRAP_AT_COLUMN)
+QString wrapText(const QString &text, const int initialIndentation = USAGE_TEXT_COLUMN, const int wrapAtColumn = WRAP_AT_COLUMN)
 {
-    QStringList words = text.split(u' ');
+    const QStringList words = text.split(u' ');
     QStringList lines = {words.first()};
     int currentLineMaxLength = wrapAtColumn - initialIndentation;
 
-    for (const QString &word : asConst(words.mid(1)))
+    for (const QString &word : asConst(words.sliced(1)))
     {
         if (lines.last().length() + word.length() + 1 < currentLineMaxLength)
         {

src/app/filelogger.cpp

@@ -175,12 +175,15 @@ void FileLogger::flushLog()
 
 void FileLogger::openLogFile()
 {
-    if (!m_logFile.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text)
+    if (!m_logFile.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text))
-        || !m_logFile.setPermissions(QFile::ReadOwner | QFile::WriteOwner))
     {
-        m_logFile.close();
+        LogMsg(tr("An error occurred while trying to open the log file. Logging to file is disabled. File: \"%1\". Error: \"%2\".")
-        LogMsg(tr("An error occurred while trying to open the log file. Logging to file is disabled."), Log::CRITICAL);
+            .arg(m_logFile.fileName(), m_logFile.errorString()), Log::CRITICAL);
+        return;
     }
+
+    // best effort, don't report error
+    m_logFile.setPermissions(QFile::ReadOwner | QFile::WriteOwner);
 }
 
 void FileLogger::closeLogFile()

src/base/CMakeLists.txt

@@ -55,6 +55,7 @@ add_library(qbt_base STATIC
     concepts/stringable.h
     digest32.h
     exceptions.h
+    freediskspacechecker.h
     global.h
     http/connection.h
     http/httperror.h
@@ -160,6 +161,7 @@ add_library(qbt_base STATIC
     bittorrent/trackerentry.cpp
     bittorrent/trackerentrystatus.cpp
     exceptions.cpp
+    freediskspacechecker.cpp
     http/connection.cpp
     http/httperror.cpp
     http/requestparser.cpp

src/base/addtorrentmanager.cpp

@@ -29,6 +29,7 @@
 
 #include "addtorrentmanager.h"
 
+#include "base/bittorrent/addtorrenterror.h"
 #include "base/bittorrent/infohash.h"
 #include "base/bittorrent/session.h"
 #include "base/bittorrent/torrentdescriptor.h"
@@ -185,8 +186,8 @@ void AddTorrentManager::handleDuplicateTorrent(const QString &source
         message = tr("Trackers are merged from new source");
     }
 
-    LogMsg(tr("Detected an attempt to add a duplicate torrent. Source: %1. Existing torrent: %2. Result: %3")
+    LogMsg(tr("Detected an attempt to add a duplicate torrent. Source: %1. Existing torrent: \"%2\". Torrent infohash: %3. Result: %4")
-            .arg(source, existingTorrent->name(), message));
+            .arg(source, existingTorrent->name(), existingTorrent->infoHash().toString(), message));
     emit addTorrentFailed(source, {BitTorrent::AddTorrentError::DuplicateTorrent, message});
 }
 

src/base/addtorrentmanager.h

@@ -35,7 +35,6 @@
 #include <QObject>
 
 #include "base/applicationcomponent.h"
-#include "base/bittorrent/addtorrenterror.h"
 #include "base/bittorrent/addtorrentparams.h"
 #include "base/torrentfileguard.h"
 
@@ -45,6 +44,7 @@ namespace BitTorrent
     class Session;
     class Torrent;
     class TorrentDescriptor;
+    struct AddTorrentError;
 }
 
 namespace Net

src/base/bittorrent/bencoderesumedatastorage.cpp

@@ -189,8 +189,13 @@ void BitTorrent::BencodeResumeDataStorage::loadQueue(const Path &queueFilename)
         return;
     }
 
+    QHash<TorrentID, qsizetype> registeredTorrentsIndexes;
+    registeredTorrentsIndexes.reserve(m_registeredTorrents.length());
+    for (qsizetype i = 0; i < m_registeredTorrents.length(); ++i)
+        registeredTorrentsIndexes.insert(m_registeredTorrents.at(i), i);
+
     const QRegularExpression hashPattern {u"^([A-Fa-f0-9]{40})$"_s};
-    int start = 0;
+    qsizetype queuePos = 0;
     while (true)
     {
         const auto line = QString::fromLatin1(queueFile.readLine(lineMaxLength).trimmed());
@@ -201,11 +206,15 @@ void BitTorrent::BencodeResumeDataStorage::loadQueue(const Path &queueFilename)
         if (rxMatch.hasMatch())
         {
             const auto torrentID = BitTorrent::TorrentID::fromString(rxMatch.captured(1));
-            const int pos = m_registeredTorrents.indexOf(torrentID, start);
+            const qsizetype pos = registeredTorrentsIndexes.value(torrentID, -1);
             if (pos != -1)
             {
-                std::swap(m_registeredTorrents[start], m_registeredTorrents[pos]);
+                if (pos != queuePos)
-                ++start;
+                {
+                    m_registeredTorrents.swapItemsAt(pos, queuePos);
+                    registeredTorrentsIndexes.insert(m_registeredTorrents.at(pos), pos);
+                }
+                ++queuePos;
             }
         }
     }
@@ -342,9 +351,9 @@ BitTorrent::LoadResumeDataResult BitTorrent::BencodeResumeDataStorage::loadTorre
     return torrentParams;
 }
 
-void BitTorrent::BencodeResumeDataStorage::store(const TorrentID &id, const LoadTorrentParams &resumeData) const
+void BitTorrent::BencodeResumeDataStorage::store(const TorrentID &id, LoadTorrentParams resumeData) const
 {
-    QMetaObject::invokeMethod(m_asyncWorker, [this, id, resumeData]()
+    QMetaObject::invokeMethod(m_asyncWorker, [this, id, resumeData = std::move(resumeData)]
     {
         m_asyncWorker->store(id, resumeData);
     });

src/base/bittorrent/bencoderesumedatastorage.h

@@ -50,7 +50,7 @@ namespace BitTorrent
 
         QList<TorrentID> registeredTorrents() const override;
         LoadResumeDataResult load(const TorrentID &id) const override;
-        void store(const TorrentID &id, const LoadTorrentParams &resumeData) const override;
+        void store(const TorrentID &id, LoadTorrentParams resumeData) const override;
         void remove(const TorrentID &id) const override;
         void storeQueue(const QList<TorrentID> &queue) const override;
 

src/base/bittorrent/dbresumedatastorage.cpp

@@ -86,7 +86,7 @@ namespace
     class StoreJob final : public Job
     {
     public:
-        StoreJob(const TorrentID &torrentID, const LoadTorrentParams &resumeData);
+        StoreJob(const TorrentID &torrentID, LoadTorrentParams resumeData);
         void perform(QSqlDatabase db) override;
 
     private:
@@ -231,7 +231,7 @@ namespace BitTorrent
         void run() override;
         void requestInterruption();
 
-        void store(const TorrentID &id, const LoadTorrentParams &resumeData);
+        void store(const TorrentID &id, LoadTorrentParams resumeData);
         void remove(const TorrentID &id);
         void storeQueue(const QList<TorrentID> &queue);
 
@@ -327,9 +327,9 @@ BitTorrent::LoadResumeDataResult BitTorrent::DBResumeDataStorage::load(const Tor
     return parseQueryResultRow(query);
 }
 
-void BitTorrent::DBResumeDataStorage::store(const TorrentID &id, const LoadTorrentParams &resumeData) const
+void BitTorrent::DBResumeDataStorage::store(const TorrentID &id, LoadTorrentParams resumeData) const
 {
-    m_asyncWorker->store(id, resumeData);
+    m_asyncWorker->store(id, std::move(resumeData));
 }
 
 void BitTorrent::DBResumeDataStorage::remove(const BitTorrent::TorrentID &id) const
@@ -769,9 +769,9 @@ void DBResumeDataStorage::Worker::requestInterruption()
     m_waitCondition.wakeAll();
 }
 
-void BitTorrent::DBResumeDataStorage::Worker::store(const TorrentID &id, const LoadTorrentParams &resumeData)
+void BitTorrent::DBResumeDataStorage::Worker::store(const TorrentID &id, LoadTorrentParams resumeData)
 {
-    addJob(std::make_unique<StoreJob>(id, resumeData));
+    addJob(std::make_unique<StoreJob>(id, std::move(resumeData)));
 }
 
 void BitTorrent::DBResumeDataStorage::Worker::remove(const TorrentID &id)
@@ -797,9 +797,9 @@ namespace
 {
     using namespace BitTorrent;
 
-    StoreJob::StoreJob(const TorrentID &torrentID, const LoadTorrentParams &resumeData)
+StoreJob::StoreJob(const TorrentID &torrentID, LoadTorrentParams resumeData)
         : m_torrentID {torrentID}
-        , m_resumeData {resumeData}
+        , m_resumeData {std::move(resumeData)}
     {
     }
 

src/base/bittorrent/dbresumedatastorage.h

@@ -49,7 +49,7 @@ namespace BitTorrent
         QList<TorrentID> registeredTorrents() const override;
         LoadResumeDataResult load(const TorrentID &id) const override;
 
-        void store(const TorrentID &id, const LoadTorrentParams &resumeData) const override;
+        void store(const TorrentID &id, LoadTorrentParams resumeData) const override;
         void remove(const TorrentID &id) const override;
         void storeQueue(const QList<TorrentID> &queue) const override;
 

src/base/bittorrent/filesearcher.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2020  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2020-2025  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -27,13 +27,14 @@
  */
 
 #include "filesearcher.h"
-#include "base/bittorrent/common.h"
-#include "base/bittorrent/infohash.h"
 
-void FileSearcher::search(const BitTorrent::TorrentID &id, const PathList &originalFileNames
+#include <QPromise>
-                          , const Path &savePath, const Path &downloadPath, const bool forceAppendExt)
+
+#include "base/bittorrent/common.h"
+
+namespace
 {
-    const auto findInDir = [](const Path &dirPath, PathList &fileNames, const bool forceAppendExt) -> bool
+    bool findInDir(const Path &dirPath, PathList &fileNames, const bool forceAppendExt)
     {
         bool found = false;
         for (Path &fileName : fileNames)
@@ -58,8 +59,12 @@ void FileSearcher::search(const BitTorrent::TorrentID &id, const PathList &origi
         }
 
         return found;
-    };
+    }
+}
 
+void FileSearcher::search(const PathList &originalFileNames, const Path &savePath
+        , const Path &downloadPath, const bool forceAppendExt, QPromise<FileSearchResult> &promise)
+{
     Path usedPath = savePath;
     PathList adjustedFileNames = originalFileNames;
     const bool found = findInDir(usedPath, adjustedFileNames, (forceAppendExt && downloadPath.isEmpty()));
@@ -69,5 +74,5 @@ void FileSearcher::search(const BitTorrent::TorrentID &id, const PathList &origi
         findInDir(usedPath, adjustedFileNames, forceAppendExt);
     }
 
-    emit searchFinished(id, usedPath, adjustedFileNames);
+    promise.addResult(FileSearchResult {.savePath = usedPath, .fileNames = adjustedFileNames});
 }

src/base/bittorrent/filesearcher.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2020  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2020-2025  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -32,10 +32,13 @@
 
 #include "base/path.h"
 
-namespace BitTorrent
+template <typename T> class QPromise;
+
+struct FileSearchResult
 {
-    class TorrentID;
+    Path savePath;
-}
+    PathList fileNames;
+};
 
 class FileSearcher final : public QObject
 {
@@ -43,12 +46,8 @@ class FileSearcher final : public QObject
     Q_DISABLE_COPY_MOVE(FileSearcher)
 
 public:
-    FileSearcher() = default;
+    using QObject::QObject;
 
-public slots:
+    void search(const PathList &originalFileNames, const Path &savePath
-    void search(const BitTorrent::TorrentID &id, const PathList &originalFileNames
+            , const Path &downloadPath, bool forceAppendExt, QPromise<FileSearchResult> &promise);
-                , const Path &savePath, const Path &downloadPath, bool forceAppendExt);
-
-signals:
-    void searchFinished(const BitTorrent::TorrentID &id, const Path &savePath, const PathList &fileNames);
 };

src/base/bittorrent/infohash.cpp

@@ -29,6 +29,9 @@
 #include "infohash.h"
 
 #include <QHash>
+#include <QString>
+
+#include "base/global.h"
 
 const int TorrentIDTypeId = qRegisterMetaType<BitTorrent::TorrentID>();
 
@@ -86,6 +89,28 @@ BitTorrent::TorrentID BitTorrent::InfoHash::toTorrentID() const
 #endif
 }
 
+QString BitTorrent::InfoHash::toString() const
+{
+    // Returns a string that is suitable for logging purpose
+
+    QString ret;
+    ret.reserve(40 + 64 + 2);  // v1 hash length + v2 hash length + comma
+
+    const SHA1Hash v1Hash = v1();
+    const bool v1IsValid = v1Hash.isValid();
+    if (v1IsValid)
+        ret += v1Hash.toString();
+
+    if (const SHA256Hash v2Hash = v2(); v2Hash.isValid())
+    {
+        if (v1IsValid)
+            ret += u", ";
+        ret += v2Hash.toString();
+    }
+
+    return ret;
+}
+
 BitTorrent::InfoHash::operator WrappedType() const
 {
     return m_nativeHash;

src/base/bittorrent/infohash.h

@@ -36,6 +36,8 @@
 
 #include "base/digest32.h"
 
+class QString;
+
 using SHA1Hash = Digest32<160>;
 using SHA256Hash = Digest32<256>;
 
@@ -79,6 +81,8 @@ namespace BitTorrent
         SHA256Hash v2() const;
         TorrentID toTorrentID() const;
 
+        QString toString() const;
+
         operator WrappedType() const;
 
     private:

src/base/bittorrent/peeraddress.cpp

@@ -39,7 +39,11 @@ PeerAddress PeerAddress::parse(const QStringView address)
     if (address.startsWith(u'[') && address.contains(u"]:"))
     {  // IPv6
         ipPort = address.split(u"]:");
-        ipPort[0] = ipPort[0].mid(1);  // chop '['
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+        ipPort[0].slice(1);  // chop '['
+#else
+        ipPort[0] = ipPort[0].sliced(1);  // chop '['
+#endif
     }
     else if (address.contains(u':'))
     {  // IPv4

src/base/bittorrent/resumedatastorage.cpp

@@ -71,8 +71,8 @@ QList<BitTorrent::LoadedResumeData> BitTorrent::ResumeDataStorage::fetchLoadedRe
     return loadedResumeData;
 }
 
-void BitTorrent::ResumeDataStorage::onResumeDataLoaded(const TorrentID &torrentID, const LoadResumeDataResult &loadResumeDataResult) const
+void BitTorrent::ResumeDataStorage::onResumeDataLoaded(const TorrentID &torrentID, LoadResumeDataResult loadResumeDataResult) const
 {
     const QMutexLocker locker {&m_loadedResumeDataMutex};
-    m_loadedResumeData.append({torrentID, loadResumeDataResult});
+    m_loadedResumeData.append({.torrentID = torrentID, .result = std::move(loadResumeDataResult)});
 }

src/base/bittorrent/resumedatastorage.h

@@ -60,7 +60,7 @@ namespace BitTorrent
 
         virtual QList<TorrentID> registeredTorrents() const = 0;
         virtual LoadResumeDataResult load(const TorrentID &id) const = 0;
-        virtual void store(const TorrentID &id, const LoadTorrentParams &resumeData) const = 0;
+        virtual void store(const TorrentID &id, LoadTorrentParams resumeData) const = 0;
         virtual void remove(const TorrentID &id) const = 0;
         virtual void storeQueue(const QList<TorrentID> &queue) const = 0;
 
@@ -72,7 +72,7 @@ namespace BitTorrent
         void loadFinished();
 
     protected:
-        void onResumeDataLoaded(const TorrentID &torrentID, const LoadResumeDataResult &loadResumeDataResult) const;
+        void onResumeDataLoaded(const TorrentID &torrentID, LoadResumeDataResult loadResumeDataResult) const;
 
     private:
         virtual void doLoadAll() const = 0;

src/base/bittorrent/session.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -422,6 +422,8 @@ namespace BitTorrent
         virtual void setUTPRateLimited(bool limited) = 0;
         virtual MixedModeAlgorithm utpMixedMode() const = 0;
         virtual void setUtpMixedMode(MixedModeAlgorithm mode) = 0;
+        virtual int hostnameCacheTTL() const = 0;
+        virtual void setHostnameCacheTTL(int value) = 0;
         virtual bool isIDNSupportEnabled() const = 0;
         virtual void setIDNSupportEnabled(bool enabled) = 0;
         virtual bool multiConnectionsPerIpEnabled() const = 0;
@@ -480,6 +482,8 @@ namespace BitTorrent
         virtual QString lastExternalIPv4Address() const = 0;
         virtual QString lastExternalIPv6Address() const = 0;
 
+        virtual qint64 freeDiskSpace() const = 0;
+
     signals:
         void startupProgressUpdated(int progress);
         void addTorrentFailed(const InfoHash &infoHash, const AddTorrentError &reason);
@@ -489,7 +493,6 @@ namespace BitTorrent
         void categoryOptionsChanged(const QString &categoryName);
         void fullDiskError(Torrent *torrent, const QString &msg);
         void IPFilterParsed(bool error, int ruleCount);
-        void loadTorrentFailed(const QString &error);
         void metadataDownloaded(const TorrentInfo &info);
         void restored();
         void paused();
@@ -520,5 +523,6 @@ namespace BitTorrent
         void trackerSuccess(Torrent *torrent, const QString &tracker);
         void trackerWarning(Torrent *torrent, const QString &tracker);
         void trackerEntryStatusesUpdated(Torrent *torrent, const QHash<QString, TrackerEntryStatus> &updatedTrackers);
+        void freeDiskSpaceChecked(qint64 result);
     };
 }

src/base/bittorrent/sessionimpl.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -30,6 +30,7 @@
 #pragma once
 
 #include <chrono>
+#include <functional>
 #include <utility>
 #include <vector>
 
@@ -61,11 +62,16 @@ class QString;
 class QTimer;
 class QUrl;
 
+template <typename T> class QFuture;
+
 class BandwidthScheduler;
 class FileSearcher;
 class FilterParserThread;
+class FreeDiskSpaceChecker;
 class NativeSessionExtension;
 
+struct FileSearchResult;
+
 namespace BitTorrent
 {
     enum class MoveStorageMode;
@@ -390,6 +396,8 @@ namespace BitTorrent
         void setUTPRateLimited(bool limited) override;
         MixedModeAlgorithm utpMixedMode() const override;
         void setUtpMixedMode(MixedModeAlgorithm mode) override;
+        int hostnameCacheTTL() const override;
+        void setHostnameCacheTTL(int value) override;
         bool isIDNSupportEnabled() const override;
         void setIDNSupportEnabled(bool enabled) override;
         bool multiConnectionsPerIpEnabled() const override;
@@ -448,6 +456,8 @@ namespace BitTorrent
         QString lastExternalIPv4Address() const override;
         QString lastExternalIPv6Address() const override;
 
+        qint64 freeDiskSpace() const override;
+
         // Torrent interface
         void handleTorrentResumeDataRequested(const TorrentImpl *torrent);
         void handleTorrentShareLimitChanged(TorrentImpl *torrent);
@@ -467,14 +477,15 @@ namespace BitTorrent
         void handleTorrentTrackersChanged(TorrentImpl *torrent);
         void handleTorrentUrlSeedsAdded(TorrentImpl *torrent, const QList<QUrl> &newUrlSeeds);
         void handleTorrentUrlSeedsRemoved(TorrentImpl *torrent, const QList<QUrl> &urlSeeds);
-        void handleTorrentResumeDataReady(TorrentImpl *torrent, const LoadTorrentParams &data);
+        void handleTorrentResumeDataReady(TorrentImpl *torrent, LoadTorrentParams data);
         void handleTorrentInfoHashChanged(TorrentImpl *torrent, const InfoHash &prevInfoHash);
         void handleTorrentStorageMovingStateChanged(TorrentImpl *torrent);
 
         bool addMoveTorrentStorageJob(TorrentImpl *torrent, const Path &newPath, MoveStorageMode mode, MoveStorageContext context);
 
-        void findIncompleteFiles(const TorrentInfo &torrentInfo, const Path &savePath
+        lt::torrent_handle reloadTorrent(const lt::torrent_handle &currentHandle, lt::add_torrent_params params);
-                                 , const Path &downloadPath, const PathList &filePaths = {}) const;
+
+        QFuture<FileSearchResult> findIncompleteFiles(const Path &savePath, const Path &downloadPath, const PathList &filePaths = {}) const;
 
         void enablePortMapping();
         void disablePortMapping();
@@ -509,7 +520,6 @@ namespace BitTorrent
         void generateResumeData();
         void handleIPFilterParsed(int ruleCount);
         void handleIPFilterError();
-        void fileSearchFinished(const TorrentID &id, const Path &savePath, const PathList &fileNames);
         void torrentContentRemovingFinished(const QString &torrentName, const QString &errorMessage);
 
     private:
@@ -568,8 +578,7 @@ namespace BitTorrent
         void updateSeedingLimitTimer();
         void exportTorrentFile(const Torrent *torrent, const Path &folderPath);
 
-        void handleAlert(const lt::alert *alert);
+        void handleAlert(lt::alert *alert);
-        void dispatchTorrentAlert(const lt::torrent_alert *alert);
         void handleAddTorrentAlert(const lt::add_torrent_alert *alert);
         void handleStateUpdateAlert(const lt::state_update_alert *alert);
         void handleMetadataReceivedAlert(const lt::metadata_received_alert *alert);
@@ -596,9 +605,20 @@ namespace BitTorrent
         void handleTrackerAlert(const lt::tracker_alert *alert);
 #ifdef QBT_USES_LIBTORRENT2
         void handleTorrentConflictAlert(const lt::torrent_conflict_alert *alert);
+        void handleFilePrioAlert(const lt::file_prio_alert *alert);
 #endif
+        void handleFastResumeRejectedAlert(const lt::fastresume_rejected_alert *alert);
+        void handleFileCompletedAlert(const lt::file_completed_alert *alert);
+        void handleFileRenamedAlert(const lt::file_renamed_alert *alert);
+        void handleFileRenameFailedAlert(const lt::file_rename_failed_alert *alert);
+        void handlePerformanceAlert(const lt::performance_alert *alert) const;
+        void handleSaveResumeDataAlert(lt::save_resume_data_alert *alert);
+        void handleSaveResumeDataFailedAlert(const lt::save_resume_data_failed_alert *alert);
+        void handleTorrentCheckedAlert(const lt::torrent_checked_alert *alert);
+        void handleTorrentFinishedAlert(const lt::torrent_finished_alert *alert);
 
-        TorrentImpl *createTorrent(const lt::torrent_handle &nativeHandle, const LoadTorrentParams &params);
+        TorrentImpl *createTorrent(const lt::torrent_handle &nativeHandle, LoadTorrentParams params);
+        TorrentImpl *getTorrent(const lt::torrent_handle &nativeHandle) const;
 
         void saveResumeData();
         void saveTorrentsQueue();
@@ -683,6 +703,7 @@ namespace BitTorrent
         CachedSettingValue<BTProtocol> m_btProtocol;
         CachedSettingValue<bool> m_isUTPRateLimited;
         CachedSettingValue<MixedModeAlgorithm> m_utpMixedMode;
+        CachedSettingValue<int> m_hostnameCacheTTL;
         CachedSettingValue<bool> m_IDNSupportEnabled;
         CachedSettingValue<bool> m_multiConnectionsPerIpEnabled;
         CachedSettingValue<bool> m_validateHTTPSTrackerCertificate;
@@ -804,11 +825,13 @@ namespace BitTorrent
         FileSearcher *m_fileSearcher = nullptr;
         TorrentContentRemover *m_torrentContentRemover = nullptr;
 
+        using AddTorrentAlertHandler = std::function<void (const lt::add_torrent_alert *alert)>;
+        QList<AddTorrentAlertHandler> m_addTorrentAlertHandlers;
+
         QHash<TorrentID, lt::torrent_handle> m_downloadedMetadata;
 
         QHash<TorrentID, TorrentImpl *> m_torrents;
         QHash<TorrentID, TorrentImpl *> m_hybridTorrentsByAltID;
-        QHash<TorrentID, LoadTorrentParams> m_loadingTorrents;
         QHash<TorrentID, RemovingTorrentData> m_removingTorrents;
         QHash<TorrentID, TorrentID> m_changedTorrentIDs;
         QMap<QString, CategoryOptions> m_categories;
@@ -850,6 +873,10 @@ namespace BitTorrent
 
         QList<TorrentImpl *> m_pendingFinishedTorrents;
 
+        FreeDiskSpaceChecker *m_freeDiskSpaceChecker = nullptr;
+        QTimer *m_freeDiskSpaceCheckingTimer = nullptr;
+        qint64 m_freeDiskSpace = -1;
+
         friend void Session::initInstance();
         friend void Session::freeInstance();
         friend Session *Session::instance();

src/base/bittorrent/torrent.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -45,6 +45,8 @@ class QByteArray;
 class QDateTime;
 class QUrl;
 
+template <typename T> class QFuture;
+
 namespace BitTorrent
 {
     enum class DownloadPriority;
@@ -273,10 +275,7 @@ namespace BitTorrent
         virtual bool isDHTDisabled() const = 0;
         virtual bool isPEXDisabled() const = 0;
         virtual bool isLSDDisabled() const = 0;
-        virtual QList<PeerInfo> peers() const = 0;
         virtual QBitArray pieces() const = 0;
-        virtual QBitArray downloadingPieces() const = 0;
-        virtual QList<int> pieceAvailability() const = 0;
         virtual qreal distributedCopies() const = 0;
         virtual qreal maxRatio() const = 0;
         virtual int maxSeedingTime() const = 0;
@@ -323,10 +322,10 @@ namespace BitTorrent
         virtual nonstd::expected<QByteArray, QString> exportToBuffer() const = 0;
         virtual nonstd::expected<void, QString> exportToFile(const Path &path) const = 0;
 
-        virtual void fetchPeerInfo(std::function<void (QList<PeerInfo>)> resultHandler) const = 0;
+        virtual QFuture<QList<PeerInfo>> fetchPeerInfo() const = 0;
-        virtual void fetchURLSeeds(std::function<void (QList<QUrl>)> resultHandler) const = 0;
+        virtual QFuture<QList<QUrl>> fetchURLSeeds() const = 0;
-        virtual void fetchPieceAvailability(std::function<void (QList<int>)> resultHandler) const = 0;
+        virtual QFuture<QList<int>> fetchPieceAvailability() const = 0;
-        virtual void fetchDownloadingPieces(std::function<void (QBitArray)> resultHandler) const = 0;
+        virtual QFuture<QBitArray> fetchDownloadingPieces() const = 0;
 
         TorrentID id() const;
         bool isRunning() const;

src/base/bittorrent/torrentcontenthandler.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2022-2023  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2022-2025  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -34,6 +34,8 @@
 #include "abstractfilestorage.h"
 #include "downloadpriority.h"
 
+template <typename T> class QFuture;
+
 namespace BitTorrent
 {
     class TorrentContentHandler : public QObject, public AbstractFileStorage
@@ -52,8 +54,7 @@ namespace BitTorrent
          * This is not the same as torrrent availability, it is just a fraction of pieces
          * that can be downloaded right now. It varies between 0 to 1.
          */
-        virtual QList<qreal> availableFileFractions() const = 0;
+        virtual QFuture<QList<qreal>> fetchAvailableFileFractions() const = 0;
-        virtual void fetchAvailableFileFractions(std::function<void (QList<qreal>)> resultHandler) const = 0;
 
         virtual void prioritizeFiles(const QList<DownloadPriority> &priorities) = 0;
         virtual void flushCache() const = 0;

src/base/bittorrent/torrentcreator.cpp

@@ -124,18 +124,20 @@ void TorrentCreator::run()
             // need to sort the file names by natural sort order
             QStringList dirs = {m_params.sourcePath.data()};
 
-#ifdef Q_OS_WIN
+            QDirIterator dirIter {m_params.sourcePath.data(), (QDir::AllDirs | QDir::NoDotAndDotDot), QDirIterator::Subdirectories};
-            // libtorrent couldn't handle .lnk files on Windows
-            // Also, Windows users do not expect torrent creator to traverse into .lnk files so skip over them
-            const QDir::Filters dirFilters {QDir::AllDirs | QDir::NoDotAndDotDot | QDir::NoSymLinks};
-#else
-            const QDir::Filters dirFilters {QDir::AllDirs | QDir::NoDotAndDotDot};
-#endif
-            QDirIterator dirIter {m_params.sourcePath.data(), dirFilters, QDirIterator::Subdirectories};
             while (dirIter.hasNext())
             {
-                const QString filePath = dirIter.next();
+                const QFileInfo dirInfo = dirIter.nextFileInfo();
-                dirs.append(filePath);
+
+#ifdef Q_OS_WIN
+                // .lnk to directory
+                // Windows users do not expect torrent creator to traverse into .lnk files so skip over them
+                if (dirInfo.isShortcut())
+                    continue;
+#endif
+
+                const QString dirPath = dirInfo.filePath();
+                dirs.append(dirPath);
             }
             std::sort(dirs.begin(), dirs.end(), naturalLessThan);
 
@@ -146,19 +148,29 @@ void TorrentCreator::run()
             {
                 QStringList tmpNames;  // natural sort files within each dir
 
-#ifdef Q_OS_WIN
+                QDirIterator fileIter {dir, QDir::Files};
-                const QDir::Filters fileFilters {QDir::Files | QDir::NoSymLinks};
-#else
-                const QDir::Filters fileFilters {QDir::Files};
-#endif
-                QDirIterator fileIter {dir, fileFilters};
                 while (fileIter.hasNext())
                 {
                     const QFileInfo fileInfo = fileIter.nextFileInfo();
+                    const Path filePath {fileInfo.filePath()};
+                    qint64 fileSize = fileInfo.size();
 
-                    const Path relFilePath = parentPath.relativePathOf(Path(fileInfo.filePath()));
+#ifdef Q_OS_WIN
+                    // .lnk to file
+                    // libtorrent couldn't handle .lnk files on Windows
+                    if (fileInfo.isShortcut())
+                        continue;
+
+                    // file symbolic link
+                    // QFileInfo::size() failed to return the target file size
+                    // and we need to redirect it manually
+                    if (fileInfo.isSymbolicLink())
+                        fileSize = QFileInfo(fileInfo.symLinkTarget()).size();
+#endif
+
+                    const Path relFilePath = parentPath.relativePathOf(filePath);
                     tmpNames.append(relFilePath.toString());
-                    fileSizeMap[tmpNames.last()] = fileInfo.size();
+                    fileSizeMap[tmpNames.last()] = fileSize;
                 }
 
                 std::sort(tmpNames.begin(), tmpNames.end(), naturalLessThan);
@@ -174,8 +186,8 @@ void TorrentCreator::run()
 #ifdef QBT_USES_LIBTORRENT2
         lt::create_torrent newTorrent {fs, m_params.pieceSize, toNativeTorrentFormatFlag(m_params.torrentFormat)};
 #else
-        lt::create_torrent newTorrent(fs, m_params.pieceSize, m_params.paddedFileSizeLimit
+        lt::create_torrent newTorrent {fs, m_params.pieceSize, m_params.paddedFileSizeLimit
-            , (m_params.isAlignmentOptimized ? lt::create_torrent::optimize_alignment : lt::create_flags_t {}));
+            , (m_params.isAlignmentOptimized ? lt::create_torrent::optimize_alignment : lt::create_flags_t {})};
 #endif
 
         // Add url seeds

src/base/bittorrent/torrentdescriptor.cpp

@@ -141,6 +141,22 @@ catch (const lt::system_error &err)
     return nonstd::make_unexpected(QString::fromLocal8Bit(err.what()));
 }
 
+nonstd::expected<QByteArray, QString> BitTorrent::TorrentDescriptor::saveToBuffer() const
+try
+{
+    const lt::entry torrentEntry = lt::write_torrent_file(m_ltAddTorrentParams);
+    // usually torrent size should be smaller than 1 MB,
+    // however there are >100 MB v2/hybrid torrent files out in the wild
+    QByteArray buffer;
+    buffer.reserve(1024 * 1024);
+    lt::bencode(std::back_inserter(buffer), torrentEntry);
+    return buffer;
+}
+catch (const lt::system_error &err)
+{
+    return nonstd::make_unexpected(QString::fromLocal8Bit(err.what()));
+}
+
 BitTorrent::TorrentDescriptor::TorrentDescriptor(lt::add_torrent_params ltAddTorrentParams)
     : m_ltAddTorrentParams {std::move(ltAddTorrentParams)}
 {

src/base/bittorrent/torrentdescriptor.h

@@ -69,6 +69,7 @@ namespace BitTorrent
         static nonstd::expected<TorrentDescriptor, QString> loadFromFile(const Path &path) noexcept;
         static nonstd::expected<TorrentDescriptor, QString> parse(const QString &str) noexcept;
         nonstd::expected<void, QString> saveToFile(const Path &path) const;
+        nonstd::expected<QByteArray, QString> saveToBuffer() const;
 
         const lt::add_torrent_params &ltAddTorrentParams() const;
 

src/base/bittorrent/torrentimpl.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -37,11 +37,10 @@
 #endif
 
 #include <libtorrent/address.hpp>
-#include <libtorrent/alert_types.hpp>
-#include <libtorrent/create_torrent.hpp>
 #include <libtorrent/session.hpp>
 #include <libtorrent/storage_defs.hpp>
 #include <libtorrent/time.hpp>
+#include <libtorrent/write_resume_data.hpp>
 
 #ifdef QBT_USES_LIBTORRENT2
 #include <libtorrent/info_hash.hpp>
@@ -51,7 +50,9 @@
 #include <QByteArray>
 #include <QCache>
 #include <QDebug>
+#include <QFuture>
 #include <QPointer>
+#include <QPromise>
 #include <QSet>
 #include <QStringList>
 #include <QUrl>
@@ -67,6 +68,7 @@
 #include "common.h"
 #include "downloadpriority.h"
 #include "extensiondata.h"
+#include "filesearcher.h"
 #include "loadtorrentparams.h"
 #include "ltqbitarray.h"
 #include "lttypecast.h"
@@ -149,35 +151,40 @@ namespace
 
                 if (ltAnnounceInfo.updating)
                 {
-                    trackerEndpointStatus.state = TrackerEndpointState::Updating;
+                    trackerEndpointStatus.isUpdating = true;
                     ++numUpdating;
                 }
-                else if (ltAnnounceInfo.fails > 0)
-                {
-                    if (ltAnnounceInfo.last_error == lt::errors::tracker_failure)
-                    {
-                        trackerEndpointStatus.state = TrackerEndpointState::TrackerError;
-                        ++numTrackerError;
-                    }
-                    else if (ltAnnounceInfo.last_error == lt::errors::announce_skipped)
-                    {
-                        trackerEndpointStatus.state = TrackerEndpointState::Unreachable;
-                        ++numUnreachable;
-                    }
-                    else
-                    {
-                        trackerEndpointStatus.state = TrackerEndpointState::NotWorking;
-                        ++numNotWorking;
-                    }
-                }
-                else if (nativeEntry.verified)
-                {
-                    trackerEndpointStatus.state = TrackerEndpointState::Working;
-                    ++numWorking;
-                }
                 else
                 {
-                    trackerEndpointStatus.state = TrackerEndpointState::NotContacted;
+                    trackerEndpointStatus.isUpdating = false;
+
+                    if (ltAnnounceInfo.fails > 0)
+                    {
+                        if (ltAnnounceInfo.last_error == lt::errors::tracker_failure)
+                        {
+                            trackerEndpointStatus.state = TrackerEndpointState::TrackerError;
+                            ++numTrackerError;
+                        }
+                        else if (ltAnnounceInfo.last_error == lt::errors::announce_skipped)
+                        {
+                            trackerEndpointStatus.state = TrackerEndpointState::Unreachable;
+                            ++numUnreachable;
+                        }
+                        else
+                        {
+                            trackerEndpointStatus.state = TrackerEndpointState::NotWorking;
+                            ++numNotWorking;
+                        }
+                    }
+                    else if (nativeEntry.verified)
+                    {
+                        trackerEndpointStatus.state = TrackerEndpointState::Working;
+                        ++numWorking;
+                    }
+                    else
+                    {
+                        trackerEndpointStatus.state = TrackerEndpointState::NotContacted;
+                    }
                 }
 
                 if (!ltAnnounceInfo.message.empty())
@@ -212,23 +219,28 @@ namespace
         {
             if (numUpdating > 0)
             {
-                trackerEntryStatus.state = TrackerEndpointState::Updating;
+                trackerEntryStatus.isUpdating = true;
             }
-            else if (numWorking > 0)
+            else
             {
-                trackerEntryStatus.state = TrackerEndpointState::Working;
+                trackerEntryStatus.isUpdating = false;
-            }
+
-            else if (numTrackerError > 0)
+                if (numWorking > 0)
-            {
+                {
-                trackerEntryStatus.state = TrackerEndpointState::TrackerError;
+                    trackerEntryStatus.state = TrackerEndpointState::Working;
-            }
+                }
-            else if (numUnreachable == numEndpoints)
+                else if (numTrackerError > 0)
-            {
+                {
-                trackerEntryStatus.state = TrackerEndpointState::Unreachable;
+                    trackerEntryStatus.state = TrackerEndpointState::TrackerError;
-            }
+                }
-            else if ((numUnreachable + numNotWorking) == numEndpoints)
+                else if (numUnreachable == numEndpoints)
-            {
+                {
-                trackerEntryStatus.state = TrackerEndpointState::NotWorking;
+                    trackerEntryStatus.state = TrackerEndpointState::Unreachable;
+                }
+                else if ((numUnreachable + numNotWorking) == numEndpoints)
+                {
+                    trackerEntryStatus.state = TrackerEndpointState::NotWorking;
+                }
             }
         }
 
@@ -287,11 +299,9 @@ namespace
 
 // TorrentImpl
 
-TorrentImpl::TorrentImpl(SessionImpl *session, lt::session *nativeSession
+TorrentImpl::TorrentImpl(SessionImpl *session, const lt::torrent_handle &nativeHandle, LoadTorrentParams params)
-                                     , const lt::torrent_handle &nativeHandle, const LoadTorrentParams &params)
     : Torrent(session)
     , m_session(session)
-    , m_nativeSession(nativeSession)
     , m_nativeHandle(nativeHandle)
 #ifdef QBT_USES_LIBTORRENT2
     , m_infoHash(m_nativeHandle.info_hashes())
@@ -314,7 +324,7 @@ TorrentImpl::TorrentImpl(SessionImpl *session, lt::session *nativeSession
     , m_useAutoTMM(params.useAutoTMM)
     , m_isStopped(params.stopped)
     , m_sslParams(params.sslParameters)
-    , m_ltAddTorrentParams(params.ltAddTorrentParams)
+    , m_ltAddTorrentParams(std::move(params.ltAddTorrentParams))
     , m_downloadLimit(cleanLimitValue(m_ltAddTorrentParams.download_limit))
     , m_uploadLimit(cleanLimitValue(m_ltAddTorrentParams.upload_limit))
 {
@@ -1437,7 +1447,7 @@ int TorrentImpl::totalLeechersCount() const
 
 int TorrentImpl::downloadLimit() const
 {
-    return m_downloadLimit;;
+    return m_downloadLimit;
 }
 
 int TorrentImpl::uploadLimit() const
@@ -1465,48 +1475,11 @@ bool TorrentImpl::isLSDDisabled() const
     return static_cast<bool>(m_nativeStatus.flags & lt::torrent_flags::disable_lsd);
 }
 
-QList<PeerInfo> TorrentImpl::peers() const
-{
-    std::vector<lt::peer_info> nativePeers;
-    m_nativeHandle.get_peer_info(nativePeers);
-
-    QList<PeerInfo> peers;
-    peers.reserve(static_cast<decltype(peers)::size_type>(nativePeers.size()));
-
-    for (const lt::peer_info &peer : nativePeers)
-        peers.append(PeerInfo(peer, pieces()));
-
-    return peers;
-}
-
 QBitArray TorrentImpl::pieces() const
 {
     return m_pieces;
 }
 
-QBitArray TorrentImpl::downloadingPieces() const
-{
-    if (!hasMetadata())
-        return {};
-
-    std::vector<lt::partial_piece_info> queue;
-    m_nativeHandle.get_download_queue(queue);
-
-    QBitArray result {piecesCount()};
-    for (const lt::partial_piece_info &info : queue)
-        result.setBit(LT::toUnderlyingType(info.piece_index));
-
-    return result;
-}
-
-QList<int> TorrentImpl::pieceAvailability() const
-{
-    std::vector<int> avail;
-    m_nativeHandle.piece_availability(avail);
-
-    return {avail.cbegin(), avail.cend()};
-}
-
 qreal TorrentImpl::distributedCopies() const
 {
     return m_nativeStatus.distributed_copies;
@@ -1752,12 +1725,6 @@ void TorrentImpl::applyFirstLastPiecePriority(const bool enabled)
     m_nativeHandle.prioritize_pieces(piecePriorities);
 }
 
-void TorrentImpl::fileSearchFinished(const Path &savePath, const PathList &fileNames)
-{
-    if (m_maintenanceJob == MaintenanceJob::HandleMetadata)
-        endReceivedMetadataHandling(savePath, fileNames);
-}
-
 TrackerEntryStatus TorrentImpl::updateTrackerEntryStatus(const lt::announce_entry &announceEntry, const QHash<lt::tcp::endpoint, QMap<int, int>> &updateInfo)
 {
     const auto it = std::find_if(m_trackerEntryStatuses.begin(), m_trackerEntryStatuses.end()
@@ -1868,7 +1835,7 @@ void TorrentImpl::endReceivedMetadataHandling(const Path &savePath, const PathLi
         applyFirstLastPiecePriority(true);
 
     m_maintenanceJob = MaintenanceJob::None;
-    prepareResumeData(p);
+    prepareResumeData(std::move(p));
 
     m_session->handleTorrentMetadataReceived(this);
 }
@@ -1877,16 +1844,6 @@ void TorrentImpl::reload()
 {
     try
     {
-        m_completedFiles.fill(false);
-        m_filesProgress.fill(0);
-        m_pieces.fill(false);
-        m_nativeStatus.pieces.clear_all();
-        m_nativeStatus.num_pieces = 0;
-
-        const auto queuePos = m_nativeHandle.queue_position();
-
-        m_nativeSession->remove_torrent(m_nativeHandle, lt::session::delete_partfile);
-
         lt::add_torrent_params p = m_ltAddTorrentParams;
         p.flags |= lt::torrent_flags::update_subscribe
                 | lt::torrent_flags::override_trackers
@@ -1906,19 +1863,21 @@ void TorrentImpl::reload()
             p.flags &= ~(lt::torrent_flags::auto_managed | lt::torrent_flags::paused);
         }
 
-        auto *const extensionData = new ExtensionData;
+        const auto queuePos = m_nativeHandle.queue_position();
-        p.userdata = LTClientData(extensionData);
-#ifndef QBT_USES_LIBTORRENT2
-        p.storage = customStorageConstructor;
-#endif
-        m_nativeHandle = m_nativeSession->add_torrent(p);
 
-        m_nativeStatus = extensionData->status;
+        m_nativeHandle = m_session->reloadTorrent(m_nativeHandle, std::move(p));
+        m_nativeStatus = static_cast<ExtensionData *>(m_nativeHandle.userdata())->status;
 
         if (queuePos >= lt::queue_position_t {})
             m_nativeHandle.queue_position_set(queuePos);
         m_nativeStatus.queue_position = queuePos;
 
+        m_completedFiles.fill(false);
+        m_filesProgress.fill(0);
+        m_pieces.fill(false);
+        m_nativeStatus.pieces.clear_all();
+        m_nativeStatus.num_pieces = 0;
+
         updateState();
     }
     catch (const lt::system_error &err)
@@ -2063,7 +2022,7 @@ void TorrentImpl::handleMoveStorageJobFinished(const Path &path, const MoveStora
     }
 }
 
-void TorrentImpl::handleTorrentCheckedAlert([[maybe_unused]] const lt::torrent_checked_alert *p)
+void TorrentImpl::handleTorrentChecked()
 {
     if (!hasMetadata())
     {
@@ -2106,7 +2065,7 @@ void TorrentImpl::handleTorrentCheckedAlert([[maybe_unused]] const lt::torrent_c
     });
 }
 
-void TorrentImpl::handleTorrentFinishedAlert([[maybe_unused]] const lt::torrent_finished_alert *p)
+void TorrentImpl::handleTorrentFinished()
 {
     m_hasMissingFiles = false;
     if (m_hasFinishedStatus)
@@ -2129,37 +2088,29 @@ void TorrentImpl::handleTorrentFinishedAlert([[maybe_unused]] const lt::torrent_
             m_hasFinishedStatus = true;
 
             if (isMoveInProgress() || (m_renameCount > 0))
-                m_moveFinishedTriggers.enqueue([this]() { m_session->handleTorrentFinished(this); });
+                m_moveFinishedTriggers.enqueue([this] { m_session->handleTorrentFinished(this); });
             else
                 m_session->handleTorrentFinished(this);
         }
     });
 }
 
-void TorrentImpl::handleTorrentPausedAlert([[maybe_unused]] const lt::torrent_paused_alert *p)
+void TorrentImpl::handleSaveResumeData(lt::add_torrent_params params)
 {
-}
+    if (m_ltAddTorrentParams.url_seeds != params.url_seeds)
-
-void TorrentImpl::handleTorrentResumedAlert([[maybe_unused]] const lt::torrent_resumed_alert *p)
-{
-}
-
-void TorrentImpl::handleSaveResumeDataAlert(const lt::save_resume_data_alert *p)
-{
-    if (m_ltAddTorrentParams.url_seeds != p->params.url_seeds)
     {
         // URL seed list have been changed by libtorrent for some reason, so we need to update cached one.
         // Unfortunately, URL seed list containing in "resume data" is generated according to different rules
         // than the list we usually cache, so we have to request it from the appropriate source.
-        fetchURLSeeds([this](const QList<QUrl> &urlSeeds) { m_urlSeeds = urlSeeds; });
+        fetchURLSeeds().then(this, [this](const QList<QUrl> &urlSeeds) { m_urlSeeds = urlSeeds; });
     }
 
-    if ((m_maintenanceJob == MaintenanceJob::HandleMetadata) && p->params.ti)
+    if ((m_maintenanceJob == MaintenanceJob::HandleMetadata) && params.ti)
     {
         Q_ASSERT(m_indexMap.isEmpty());
 
         const auto isSeedMode = static_cast<bool>(m_ltAddTorrentParams.flags & lt::torrent_flags::seed_mode);
-        m_ltAddTorrentParams = p->params;
+        m_ltAddTorrentParams = std::move(params);
         if (isSeedMode)
             m_ltAddTorrentParams.flags |= lt::torrent_flags::seed_mode;
 
@@ -2198,15 +2149,20 @@ void TorrentImpl::handleSaveResumeDataAlert(const lt::save_resume_data_alert *p)
                 filePaths[i] = Path(it->second);
         }
 
-        m_session->findIncompleteFiles(metadata, savePath(), downloadPath(), filePaths);
+        m_session->findIncompleteFiles(savePath(), downloadPath(), filePaths).then(this
+                , [this](const FileSearchResult &result)
+        {
+            if (m_maintenanceJob == MaintenanceJob::HandleMetadata)
+                endReceivedMetadataHandling(result.savePath, result.fileNames);
+        });
     }
     else
     {
-        prepareResumeData(p->params);
+        prepareResumeData(std::move(params));
     }
 }
 
-void TorrentImpl::prepareResumeData(const lt::add_torrent_params &params)
+void TorrentImpl::prepareResumeData(lt::add_torrent_params params)
 {
     {
         decltype(params.have_pieces) havePieces;
@@ -2230,7 +2186,7 @@ void TorrentImpl::prepareResumeData(const lt::add_torrent_params &params)
         }
 
         // Update recent resume data
-        m_ltAddTorrentParams = params;
+        m_ltAddTorrentParams = std::move(params);
 
         if (needPreserveProgress)
         {
@@ -2246,7 +2202,7 @@ void TorrentImpl::prepareResumeData(const lt::add_torrent_params &params)
     // We shouldn't save upload_mode flag to allow torrent operate normally on next run
     m_ltAddTorrentParams.flags &= ~lt::torrent_flags::upload_mode;
 
-    const LoadTorrentParams resumeData
+    LoadTorrentParams resumeData
     {
         .ltAddTorrentParams = m_ltAddTorrentParams,
         .name = m_name,
@@ -2269,33 +2225,20 @@ void TorrentImpl::prepareResumeData(const lt::add_torrent_params &params)
         .sslParameters = m_sslParams
     };
 
-    m_session->handleTorrentResumeDataReady(this, resumeData);
+    m_session->handleTorrentResumeDataReady(this, std::move(resumeData));
 }
 
-void TorrentImpl::handleSaveResumeDataFailedAlert(const lt::save_resume_data_failed_alert *p)
+void TorrentImpl::handleFastResumeRejected()
-{
-    if (p->error != lt::errors::resume_data_not_modified)
-    {
-        LogMsg(tr("Generate resume data failed. Torrent: \"%1\". Reason: \"%2\"")
-            .arg(name(), Utils::String::fromLocal8Bit(p->error.message())), Log::CRITICAL);
-    }
-}
-
-void TorrentImpl::handleFastResumeRejectedAlert(const lt::fastresume_rejected_alert *p)
 {
     // Files were probably moved or storage isn't accessible
     m_hasMissingFiles = true;
-    LogMsg(tr("Failed to restore torrent. Files were probably moved or storage isn't accessible. Torrent: \"%1\". Reason: \"%2\"")
-        .arg(name(), QString::fromStdString(p->message())), Log::WARNING);
 }
 
-void TorrentImpl::handleFileRenamedAlert(const lt::file_renamed_alert *p)
+void TorrentImpl::handleFileRenamed(const lt::file_index_t nativeFileIndex, const Path &newActualFilePath, const Path &oldActualFilePath)
 {
-    const int fileIndex = m_indexMap.value(p->index, -1);
+    const int fileIndex = fileIndexFromNative(nativeFileIndex);
     Q_ASSERT(fileIndex >= 0);
 
-    const Path newActualFilePath {QString::fromUtf8(p->new_name())};
-
     const Path oldFilePath = m_filePaths.at(fileIndex);
     const Path newFilePath = makeUserPath(newActualFilePath);
 
@@ -2305,11 +2248,6 @@ void TorrentImpl::handleFileRenamedAlert(const lt::file_renamed_alert *p)
     if (oldFilePath.data() == newFilePath.data())
     {
         // Remove empty ".unwanted" folders
-#ifdef QBT_USES_LIBTORRENT2
-        const Path oldActualFilePath {QString::fromUtf8(p->old_name())};
-#else
-        const Path oldActualFilePath;
-#endif
         const Path oldActualParentPath = oldActualFilePath.parentPath();
         const Path newActualParentPath = newActualFilePath.parentPath();
         if (newActualParentPath.filename() == UNWANTED_FOLDER_NAME)
@@ -2359,14 +2297,11 @@ void TorrentImpl::handleFileRenamedAlert(const lt::file_renamed_alert *p)
     deferredRequestResumeData();
 }
 
-void TorrentImpl::handleFileRenameFailedAlert(const lt::file_rename_failed_alert *p)
+void TorrentImpl::handleFileRenameFailed(const lt::file_index_t nativeFileIndex)
 {
-    const int fileIndex = m_indexMap.value(p->index, -1);
+    const int fileIndex = fileIndexFromNative(nativeFileIndex);
     Q_ASSERT(fileIndex >= 0);
 
-    LogMsg(tr("File rename failed. Torrent: \"%1\", file: \"%2\", reason: \"%3\"")
-        .arg(name(), filePath(fileIndex).toString(), Utils::String::fromLocal8Bit(p->error.message())), Log::WARNING);
-
     --m_renameCount;
     while (!isMoveInProgress() && (m_renameCount == 0) && !m_moveFinishedTriggers.isEmpty())
         m_moveFinishedTriggers.takeFirst()();
@@ -2374,12 +2309,12 @@ void TorrentImpl::handleFileRenameFailedAlert(const lt::file_rename_failed_alert
     deferredRequestResumeData();
 }
 
-void TorrentImpl::handleFileCompletedAlert(const lt::file_completed_alert *p)
+void TorrentImpl::handleFileCompleted(const lt::file_index_t nativeFileIndex)
 {
     if (m_maintenanceJob == MaintenanceJob::HandleMetadata)
         return;
 
-    const int fileIndex = m_indexMap.value(p->index, -1);
+    const int fileIndex = fileIndexFromNative(nativeFileIndex);
     Q_ASSERT(fileIndex >= 0);
 
     m_completedFiles.setBit(fileIndex);
@@ -2407,22 +2342,13 @@ void TorrentImpl::handleFileCompletedAlert(const lt::file_completed_alert *p)
     }
 }
 
-void TorrentImpl::handleFileErrorAlert(const lt::file_error_alert *p)
+void TorrentImpl::handleFileError(FileErrorInfo fileError)
 {
-    m_lastFileError = {p->error, p->op};
+    m_lastFileError = std::move(fileError);
 }
 
-#ifdef QBT_USES_LIBTORRENT2
+void TorrentImpl::handleMetadataReceived()
-void TorrentImpl::handleFilePrioAlert(const lt::file_prio_alert *)
 {
-    deferredRequestResumeData();
-}
-#endif
-
-void TorrentImpl::handleMetadataReceivedAlert([[maybe_unused]] const lt::metadata_received_alert *p)
-{
-    qDebug("Metadata received for torrent %s.", qUtf8Printable(name()));
-
 #ifdef QBT_USES_LIBTORRENT2
     const InfoHash prevInfoHash = infoHash();
     m_infoHash = InfoHash(m_nativeHandle.info_hashes());
@@ -2434,12 +2360,6 @@ void TorrentImpl::handleMetadataReceivedAlert([[maybe_unused]] const lt::metadat
     deferredRequestResumeData();
 }
 
-void TorrentImpl::handlePerformanceAlert(const lt::performance_alert *p) const
-{
-    LogMsg((tr("Performance alert: %1. More info: %2").arg(QString::fromStdString(p->message()), u"https://libtorrent.org/reference-Alerts.html#enum-performance-warning-t"_s))
-           , Log::INFO);
-}
-
 void TorrentImpl::handleCategoryOptionsChanged()
 {
     if (m_useAutoTMM)
@@ -2462,57 +2382,6 @@ void TorrentImpl::handleUnwantedFolderToggled()
     manageActualFilePaths();
 }
 
-void TorrentImpl::handleAlert(const lt::alert *a)
-{
-    switch (a->type())
-    {
-#ifdef QBT_USES_LIBTORRENT2
-    case lt::file_prio_alert::alert_type:
-        handleFilePrioAlert(static_cast<const lt::file_prio_alert*>(a));
-        break;
-#endif
-    case lt::file_renamed_alert::alert_type:
-        handleFileRenamedAlert(static_cast<const lt::file_renamed_alert*>(a));
-        break;
-    case lt::file_rename_failed_alert::alert_type:
-        handleFileRenameFailedAlert(static_cast<const lt::file_rename_failed_alert*>(a));
-        break;
-    case lt::file_completed_alert::alert_type:
-        handleFileCompletedAlert(static_cast<const lt::file_completed_alert*>(a));
-        break;
-    case lt::file_error_alert::alert_type:
-        handleFileErrorAlert(static_cast<const lt::file_error_alert*>(a));
-        break;
-    case lt::torrent_finished_alert::alert_type:
-        handleTorrentFinishedAlert(static_cast<const lt::torrent_finished_alert*>(a));
-        break;
-    case lt::save_resume_data_alert::alert_type:
-        handleSaveResumeDataAlert(static_cast<const lt::save_resume_data_alert*>(a));
-        break;
-    case lt::save_resume_data_failed_alert::alert_type:
-        handleSaveResumeDataFailedAlert(static_cast<const lt::save_resume_data_failed_alert*>(a));
-        break;
-    case lt::torrent_paused_alert::alert_type:
-        handleTorrentPausedAlert(static_cast<const lt::torrent_paused_alert*>(a));
-        break;
-    case lt::torrent_resumed_alert::alert_type:
-        handleTorrentResumedAlert(static_cast<const lt::torrent_resumed_alert*>(a));
-        break;
-    case lt::metadata_received_alert::alert_type:
-        handleMetadataReceivedAlert(static_cast<const lt::metadata_received_alert*>(a));
-        break;
-    case lt::fastresume_rejected_alert::alert_type:
-        handleFastResumeRejectedAlert(static_cast<const lt::fastresume_rejected_alert*>(a));
-        break;
-    case lt::torrent_checked_alert::alert_type:
-        handleTorrentCheckedAlert(static_cast<const lt::torrent_checked_alert*>(a));
-        break;
-    case lt::performance_alert::alert_type:
-        handlePerformanceAlert(static_cast<const lt::performance_alert*>(a));
-        break;
-    }
-}
-
 void TorrentImpl::manageActualFilePaths()
 {
     const std::shared_ptr<const lt::torrent_info> nativeInfo = nativeTorrentInfo();
@@ -2560,6 +2429,11 @@ lt::torrent_handle TorrentImpl::nativeHandle() const
     return m_nativeHandle;
 }
 
+int TorrentImpl::fileIndexFromNative(const lt::file_index_t nativeFileIndex) const
+{
+    return m_indexMap.value(nativeFileIndex, -1);
+}
+
 void TorrentImpl::setMetadata(const TorrentInfo &torrentInfo)
 {
     if (hasMetadata())
@@ -2879,18 +2753,9 @@ nonstd::expected<lt::entry, QString> TorrentImpl::exportTorrent() const
 
     try
     {
-#ifdef QBT_USES_LIBTORRENT2
+        [[maybe_unused]] const auto infoGuard = qScopeGuard([this] { m_ltAddTorrentParams.ti.reset(); });
-        const std::shared_ptr<lt::torrent_info> completeTorrentInfo = m_nativeHandle.torrent_file_with_hashes();
+        m_ltAddTorrentParams.ti = info().nativeInfo();
-        const std::shared_ptr<lt::torrent_info> torrentInfo = (completeTorrentInfo ? completeTorrentInfo : info().nativeInfo());
+        return lt::write_torrent_file(m_ltAddTorrentParams);
-#else
-        const std::shared_ptr<lt::torrent_info> torrentInfo = info().nativeInfo();
-#endif
-        lt::create_torrent creator {*torrentInfo};
-
-        for (const TrackerEntryStatus &status : asConst(trackers()))
-            creator.add_tracker(status.url.toStdString(), status.tier);
-
-        return creator.generate();
     }
     catch (const lt::system_error &err)
     {
@@ -2925,9 +2790,9 @@ nonstd::expected<void, QString> TorrentImpl::exportToFile(const Path &path) cons
     return {};
 }
 
-void TorrentImpl::fetchPeerInfo(std::function<void (QList<PeerInfo>)> resultHandler) const
+QFuture<QList<PeerInfo>> TorrentImpl::fetchPeerInfo() const
 {
-    invokeAsync([nativeHandle = m_nativeHandle, allPieces = pieces()]() -> QList<PeerInfo>
+    return invokeAsync([nativeHandle = m_nativeHandle, allPieces = pieces()]() -> QList<PeerInfo>
     {
         try
         {
@@ -2942,13 +2807,12 @@ void TorrentImpl::fetchPeerInfo(std::function<void (QList<PeerInfo>)> resultHand
         catch (const std::exception &) {}
 
         return {};
-    }
+    });
-    , std::move(resultHandler));
 }
 
-void TorrentImpl::fetchURLSeeds(std::function<void (QList<QUrl>)> resultHandler) const
+QFuture<QList<QUrl>> TorrentImpl::fetchURLSeeds() const
 {
-    invokeAsync([nativeHandle = m_nativeHandle]() -> QList<QUrl>
+    return invokeAsync([nativeHandle = m_nativeHandle]() -> QList<QUrl>
     {
         try
         {
@@ -2962,13 +2826,12 @@ void TorrentImpl::fetchURLSeeds(std::function<void (QList<QUrl>)> resultHandler)
         catch (const std::exception &) {}
 
         return {};
-    }
+    });
-    , std::move(resultHandler));
 }
 
-void TorrentImpl::fetchPieceAvailability(std::function<void (QList<int>)> resultHandler) const
+QFuture<QList<int>> TorrentImpl::fetchPieceAvailability() const
 {
-    invokeAsync([nativeHandle = m_nativeHandle]() -> QList<int>
+    return invokeAsync([nativeHandle = m_nativeHandle]() -> QList<int>
     {
         try
         {
@@ -2979,13 +2842,12 @@ void TorrentImpl::fetchPieceAvailability(std::function<void (QList<int>)> result
         catch (const std::exception &) {}
 
         return {};
-    }
+    });
-    , std::move(resultHandler));
 }
 
-void TorrentImpl::fetchDownloadingPieces(std::function<void (QBitArray)> resultHandler) const
+QFuture<QBitArray> TorrentImpl::fetchDownloadingPieces() const
 {
-    invokeAsync([nativeHandle = m_nativeHandle, torrentInfo = m_torrentInfo]() -> QBitArray
+    return invokeAsync([nativeHandle = m_nativeHandle, torrentInfo = m_torrentInfo]() -> QBitArray
     {
         try
         {
@@ -3004,13 +2866,12 @@ void TorrentImpl::fetchDownloadingPieces(std::function<void (QBitArray)> resultH
         catch (const std::exception &) {}
 
         return {};
-    }
+    });
-    , std::move(resultHandler));
 }
 
-void TorrentImpl::fetchAvailableFileFractions(std::function<void (QList<qreal>)> resultHandler) const
+QFuture<QList<qreal>> TorrentImpl::fetchAvailableFileFractions() const
 {
-    invokeAsync([nativeHandle = m_nativeHandle, torrentInfo = m_torrentInfo]() -> QList<qreal>
+    return invokeAsync([nativeHandle = m_nativeHandle, torrentInfo = m_torrentInfo]() -> QList<qreal>
     {
         if (!torrentInfo.isValid() || (torrentInfo.filesCount() <= 0))
             return {};
@@ -3044,8 +2905,7 @@ void TorrentImpl::fetchAvailableFileFractions(std::function<void (QList<qreal>)>
         catch (const std::exception &) {}
 
         return {};
-    }
+    });
-    , std::move(resultHandler));
 }
 
 void TorrentImpl::prioritizeFiles(const QList<DownloadPriority> &priorities)
@@ -3056,7 +2916,7 @@ void TorrentImpl::prioritizeFiles(const QList<DownloadPriority> &priorities)
     Q_ASSERT(priorities.size() == filesCount());
 
     // Reset 'm_hasSeedStatus' if needed in order to react again to
-    // 'torrent_finished_alert' and eg show tray notifications
+    // "torrent finished" event and e.g. show tray notifications
     const QList<DownloadPriority> oldPriorities = filePriorities();
     for (int i = 0; i < oldPriorities.size(); ++i)
     {
@@ -3085,47 +2945,17 @@ void TorrentImpl::prioritizeFiles(const QList<DownloadPriority> &priorities)
     manageActualFilePaths();
 }
 
-QList<qreal> TorrentImpl::availableFileFractions() const
+template <typename Func>
+QFuture<std::invoke_result_t<Func>> TorrentImpl::invokeAsync(Func &&func) const
 {
-    Q_ASSERT(hasMetadata());
+    QPromise<std::invoke_result_t<Func>> promise;
-
+    const auto future = promise.future();
-    const int filesCount = this->filesCount();
+    promise.start();
-    if (filesCount <= 0) return {};
+    m_session->invokeAsync([func = std::forward<Func>(func), promise = std::move(promise)]() mutable
-
-    const QList<int> piecesAvailability = pieceAvailability();
-    // libtorrent returns empty array for seeding only torrents
-    if (piecesAvailability.empty()) return QList<qreal>(filesCount, -1);
-
-    QList<qreal> res;
-    res.reserve(filesCount);
-    for (int i = 0; i < filesCount; ++i)
     {
-        const TorrentInfo::PieceRange filePieces = m_torrentInfo.filePieces(i);
+        promise.addResult(func());
-
+        promise.finish();
-        int availablePieces = 0;
-        for (const int piece : filePieces)
-            availablePieces += (piecesAvailability[piece] > 0) ? 1 : 0;
-
-        const qreal availability = filePieces.isEmpty()
-            ? 1  // the file has no pieces, so it is available by default
-            : static_cast<qreal>(availablePieces) / filePieces.size();
-        res.push_back(availability);
-    }
-    return res;
-}
-
-template <typename Func, typename Callback>
-void TorrentImpl::invokeAsync(Func func, Callback resultHandler) const
-{
-    m_session->invokeAsync([session = m_session
-                           , func = std::move(func)
-                           , resultHandler = std::move(resultHandler)
-                           , thisTorrent = QPointer<const TorrentImpl>(this)]() mutable
-    {
-        session->invoke([result = func(), thisTorrent, resultHandler = std::move(resultHandler)]
-        {
-            if (thisTorrent)
-                resultHandler(result);
-        });
     });
+
+    return future;
 }

src/base/bittorrent/torrentimpl.h

@@ -94,8 +94,7 @@ namespace BitTorrent
         Q_DISABLE_COPY_MOVE(TorrentImpl)
 
     public:
-        TorrentImpl(SessionImpl *session, lt::session *nativeSession
+        TorrentImpl(SessionImpl *session, const lt::torrent_handle &nativeHandle, LoadTorrentParams params);
-                          , const lt::torrent_handle &nativeHandle, const LoadTorrentParams &params);
         ~TorrentImpl() override;
 
         bool isValid() const;
@@ -203,10 +202,7 @@ namespace BitTorrent
         bool isDHTDisabled() const override;
         bool isPEXDisabled() const override;
         bool isLSDDisabled() const override;
-        QList<PeerInfo> peers() const override;
         QBitArray pieces() const override;
-        QBitArray downloadingPieces() const override;
-        QList<int> pieceAvailability() const override;
         qreal distributedCopies() const override;
         qreal maxRatio() const override;
         int maxSeedingTime() const override;
@@ -220,7 +216,6 @@ namespace BitTorrent
         int connectionsCount() const override;
         int connectionsLimit() const override;
         qlonglong nextAnnounce() const override;
-        QList<qreal> availableFileFractions() const override;
 
         void setName(const QString &name) override;
         void setSequentialDownload(bool enable) override;
@@ -258,19 +253,29 @@ namespace BitTorrent
         nonstd::expected<QByteArray, QString> exportToBuffer() const override;
         nonstd::expected<void, QString> exportToFile(const Path &path) const override;
 
-        void fetchPeerInfo(std::function<void (QList<PeerInfo>)> resultHandler) const override;
+        QFuture<QList<PeerInfo>> fetchPeerInfo() const override;
-        void fetchURLSeeds(std::function<void (QList<QUrl>)> resultHandler) const override;
+        QFuture<QList<QUrl>> fetchURLSeeds() const override;
-        void fetchPieceAvailability(std::function<void (QList<int>)> resultHandler) const override;
+        QFuture<QList<int>> fetchPieceAvailability() const override;
-        void fetchDownloadingPieces(std::function<void (QBitArray)> resultHandler) const override;
+        QFuture<QBitArray> fetchDownloadingPieces() const override;
-        void fetchAvailableFileFractions(std::function<void (QList<qreal>)> resultHandler) const override;
+        QFuture<QList<qreal>> fetchAvailableFileFractions() const override;
 
         bool needSaveResumeData() const;
 
         // Session interface
         lt::torrent_handle nativeHandle() const;
 
-        void handleAlert(const lt::alert *a);
+        int fileIndexFromNative(lt::file_index_t nativeFileIndex) const;
+
         void handleStateUpdate(const lt::torrent_status &nativeStatus);
+        void handleFastResumeRejected();
+        void handleFileCompleted(lt::file_index_t nativeFileIndex);
+        void handleFileError(FileErrorInfo fileError);
+        void handleFileRenamed(lt::file_index_t nativeFileIndex, const Path &newActualFilePath, const Path &oldActualFilePath);
+        void handleFileRenameFailed(lt::file_index_t nativeFileIndex);
+        void handleMetadataReceived();
+        void handleSaveResumeData(lt::add_torrent_params params);
+        void handleTorrentChecked();
+        void handleTorrentFinished();
         void handleQueueingModeChanged();
         void handleCategoryOptionsChanged();
         void handleAppendExtensionToggled();
@@ -278,7 +283,6 @@ namespace BitTorrent
         void requestResumeData(lt::resume_data_flags_t flags = {});
         void deferredRequestResumeData();
         void handleMoveStorageJobFinished(const Path &path, MoveStorageContext context, bool hasOutstandingJob);
-        void fileSearchFinished(const Path &savePath, const PathList &fileNames);
         TrackerEntryStatus updateTrackerEntryStatus(const lt::announce_entry &announceEntry, const QHash<lt::tcp::endpoint, QMap<int, int>> &updateInfo);
         void resetTrackerEntryStatuses();
 
@@ -291,23 +295,6 @@ namespace BitTorrent
         void updateProgress();
         void updateState();
 
-        void handleFastResumeRejectedAlert(const lt::fastresume_rejected_alert *p);
-        void handleFileCompletedAlert(const lt::file_completed_alert *p);
-        void handleFileErrorAlert(const lt::file_error_alert *p);
-#ifdef QBT_USES_LIBTORRENT2
-        void handleFilePrioAlert(const lt::file_prio_alert *p);
-#endif
-        void handleFileRenamedAlert(const lt::file_renamed_alert *p);
-        void handleFileRenameFailedAlert(const lt::file_rename_failed_alert *p);
-        void handleMetadataReceivedAlert(const lt::metadata_received_alert *p);
-        void handlePerformanceAlert(const lt::performance_alert *p) const;
-        void handleSaveResumeDataAlert(const lt::save_resume_data_alert *p);
-        void handleSaveResumeDataFailedAlert(const lt::save_resume_data_failed_alert *p);
-        void handleTorrentCheckedAlert(const lt::torrent_checked_alert *p);
-        void handleTorrentFinishedAlert(const lt::torrent_finished_alert *p);
-        void handleTorrentPausedAlert(const lt::torrent_paused_alert *p);
-        void handleTorrentResumedAlert(const lt::torrent_resumed_alert *p);
-
         bool isMoveInProgress() const;
 
         void setAutoManaged(bool enable);
@@ -320,17 +307,16 @@ namespace BitTorrent
         void manageActualFilePaths();
         void applyFirstLastPiecePriority(bool enabled);
 
-        void prepareResumeData(const lt::add_torrent_params &params);
+        void prepareResumeData(lt::add_torrent_params resumeData);
         void endReceivedMetadataHandling(const Path &savePath, const PathList &fileNames);
         void reload();
 
         nonstd::expected<lt::entry, QString> exportTorrent() const;
 
-        template <typename Func, typename Callback>
+        template <typename Func>
-        void invokeAsync(Func func, Callback resultHandler) const;
+        QFuture<std::invoke_result_t<Func>> invokeAsync(Func &&func) const;
 
         SessionImpl *const m_session = nullptr;
-        lt::session *m_nativeSession = nullptr;
         lt::torrent_handle m_nativeHandle;
         mutable lt::torrent_status m_nativeStatus;
         TorrentState m_state = TorrentState::Unknown;
@@ -387,7 +373,7 @@ namespace BitTorrent
 
         bool m_unchecked = false;
 
-        lt::add_torrent_params m_ltAddTorrentParams;
+        mutable lt::add_torrent_params m_ltAddTorrentParams;
 
         int m_downloadLimit = 0;
         int m_uploadLimit = 0;

src/base/bittorrent/tracker.cpp

@@ -380,7 +380,7 @@ void Tracker::registerPeer(const TrackerAnnounceRequest &announceReq)
     {
         // Reached max size, remove a random torrent
         if (m_torrents.size() >= MAX_TORRENTS)
-            m_torrents.erase(m_torrents.begin());
+            m_torrents.erase(m_torrents.cbegin());
     }
 
     m_torrents[announceReq.torrentID].setPeer(announceReq.peer);

src/base/bittorrent/trackerentrystatus.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -41,7 +41,6 @@ namespace BitTorrent
     {
         NotContacted = 1,
         Working = 2,
-        Updating = 3,
         NotWorking = 4,
         TrackerError = 5,
         Unreachable = 6
@@ -52,6 +51,7 @@ namespace BitTorrent
         QString name {};
         int btVersion = 1;
 
+        bool isUpdating = false;
         TrackerEndpointState state = TrackerEndpointState::NotContacted;
         QString message {};
 
@@ -69,6 +69,7 @@ namespace BitTorrent
         QString url {};
         int tier = 0;
 
+        bool isUpdating = false;
         TrackerEndpointState state = TrackerEndpointState::NotContacted;
         QString message {};
 

src/base/freediskspacechecker.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2023-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2018  Thomas Piccirello <thomas.piccirello@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
@@ -29,16 +29,24 @@
 
 #include "freediskspacechecker.h"
 
-#include "base/bittorrent/session.h"
 #include "base/utils/fs.h"
 
-qint64 FreeDiskSpaceChecker::lastResult() const
+FreeDiskSpaceChecker::FreeDiskSpaceChecker(const Path &pathToCheck)
+    : m_pathToCheck {pathToCheck}
 {
-    return m_lastResult;
+}
+
+Path FreeDiskSpaceChecker::pathToCheck() const
+{
+    return m_pathToCheck;
+}
+
+void FreeDiskSpaceChecker::setPathToCheck(const Path &newPathToCheck)
+{
+    m_pathToCheck = newPathToCheck;
 }
 
 void FreeDiskSpaceChecker::check()
 {
-    m_lastResult = Utils::Fs::freeDiskSpaceOnPath(BitTorrent::Session::instance()->savePath());
+    emit checked(Utils::Fs::freeDiskSpaceOnPath(m_pathToCheck));
-    emit checked(m_lastResult);
 }

src/base/freediskspacechecker.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2023-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2018  Thomas Piccirello <thomas.piccirello@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
@@ -31,15 +31,18 @@
 
 #include <QObject>
 
+#include "base/path.h"
+
 class FreeDiskSpaceChecker final : public QObject
 {
     Q_OBJECT
     Q_DISABLE_COPY_MOVE(FreeDiskSpaceChecker)
 
 public:
-    using QObject::QObject;
+    FreeDiskSpaceChecker(const Path &pathToCheck);
 
-    qint64 lastResult() const;
+    Path pathToCheck() const;
+    void setPathToCheck(const Path &newPathToCheck);
 
 public slots:
     void check();
@@ -48,5 +51,5 @@ signals:
     void checked(qint64 freeSpaceSize);
 
 private:
-    qint64 m_lastResult = 0;
+    Path m_pathToCheck;
 };

src/base/http/connection.cpp

@@ -155,7 +155,11 @@ void Connection::read()
                     sendResponse(resp);
                 }
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+                m_receivedData.slice(result.frameSize);
+#else
                 m_receivedData.remove(0, result.frameSize);
+#endif
             }
             break;
 

src/base/http/requestparser.cpp

@@ -69,8 +69,8 @@ namespace
             return false;
         }
 
-        const QString name = line.left(i).trimmed().toString().toLower();
+        const QString name = line.first(i).trimmed().toString().toLower();
-        const QString value = line.mid(i + 1).trimmed().toString();
+        const QString value = line.sliced(i + 1).trimmed().toString();
         out[name] = value;
 
         return true;
@@ -204,15 +204,15 @@ bool RequestParser::parseRequestLine(const QString &line)
     m_request.method = match.captured(1);
 
     // Request Target
-    const QByteArray url {match.captured(2).toLatin1()};
+    const QByteArray url {match.capturedView(2).toLatin1()};
     const int sepPos = url.indexOf('?');
-    const QByteArrayView pathComponent = ((sepPos == -1) ? url : QByteArrayView(url).mid(0, sepPos));
+    const QByteArrayView pathComponent = ((sepPos == -1) ? url : QByteArrayView(url).first(sepPos));
 
     m_request.path = QString::fromUtf8(QByteArray::fromPercentEncoding(asQByteArray(pathComponent)));
 
     if (sepPos >= 0)
     {
-        const QByteArrayView query = QByteArrayView(url).mid(sepPos + 1);
+        const QByteArrayView query = QByteArrayView(url).sliced(sepPos + 1);
 
         // [rfc3986] 2.4 When to Encode or Decode
         // URL components should be separated before percent-decoding
@@ -221,8 +221,8 @@ bool RequestParser::parseRequestLine(const QString &line)
             const int eqCharPos = param.indexOf('=');
             if (eqCharPos <= 0) continue;  // ignores params without name
 
-            const QByteArrayView nameComponent = param.mid(0, eqCharPos);
+            const QByteArrayView nameComponent = param.first(eqCharPos);
-            const QByteArrayView valueComponent = param.mid(eqCharPos + 1);
+            const QByteArrayView valueComponent = param.sliced(eqCharPos + 1);
             const QString paramName = QString::fromUtf8(
                 QByteArray::fromPercentEncoding(asQByteArray(nameComponent)).replace('+', ' '));
             const QByteArray paramValue = QByteArray::fromPercentEncoding(asQByteArray(valueComponent)).replace('+', ' ');
@@ -270,7 +270,7 @@ bool RequestParser::parsePostMessage(const QByteArrayView data)
             return false;
         }
 
-        const QByteArray delimiter = Utils::String::unquote(QStringView(contentType).mid(idx + boundaryFieldName.size())).toLatin1();
+        const QByteArray delimiter = Utils::String::unquote(QStringView(contentType).sliced(idx + boundaryFieldName.size())).toLatin1();
         if (delimiter.isEmpty())
         {
             qWarning() << Q_FUNC_INFO << "boundary delimiter field empty!";
@@ -279,7 +279,7 @@ bool RequestParser::parsePostMessage(const QByteArrayView data)
 
         // split data by "dash-boundary"
         const QByteArray dashDelimiter = QByteArray("--") + delimiter + CRLF;
-        QList<QByteArrayView> multipart = splitToViews(data, dashDelimiter, Qt::SkipEmptyParts);
+        QList<QByteArrayView> multipart = splitToViews(data, dashDelimiter);
         if (multipart.isEmpty())
         {
             qWarning() << Q_FUNC_INFO << "multipart empty";
@@ -310,8 +310,8 @@ bool RequestParser::parseFormData(const QByteArrayView data)
         return false;
     }
 
-    const QString headers = QString::fromLatin1(data.mid(0, eohPos));
+    const QString headers = QString::fromLatin1(data.first(eohPos));
-    const QByteArrayView payload = viewWithoutEndingWith(data.mid((eohPos + EOH.size()), data.size()), CRLF);
+    const QByteArrayView payload = viewWithoutEndingWith(data.sliced((eohPos + EOH.size())), CRLF);
 
     HeaderMap headersMap;
     const QList<QStringView> headerLines = QStringView(headers).split(QString::fromLatin1(CRLF), Qt::SkipEmptyParts);
@@ -328,8 +328,8 @@ bool RequestParser::parseFormData(const QByteArrayView data)
                 if (idx < 0)
                     continue;
 
-                const QString name = directive.left(idx).trimmed().toString().toLower();
+                const QString name = directive.first(idx).trimmed().toString().toLower();
-                const QString value = Utils::String::unquote(directive.mid(idx + 1).trimmed()).toString();
+                const QString value = Utils::String::unquote(directive.sliced(idx + 1).trimmed()).toString();
                 headersMap[name] = value;
             }
         }

src/base/net/dnsupdater.cpp

@@ -96,9 +96,9 @@ void DNSUpdater::ipRequestFinished(const DownloadResult &result)
     const QRegularExpressionMatch ipRegexMatch = QRegularExpression(u"Current IP Address:\\s+([^<]+)</body>"_s).match(QString::fromUtf8(result.data));
     if (ipRegexMatch.hasMatch())
     {
-        QString ipStr = ipRegexMatch.captured(1);
+        const QString ipStr = ipRegexMatch.captured(1);
         qDebug() << Q_FUNC_INFO << "Regular expression captured the following IP:" << ipStr;
-        QHostAddress newIp(ipStr);
+        const QHostAddress newIp {ipStr};
         if (!newIp.isNull())
         {
             if (m_lastIP != newIp)

src/base/net/downloadhandlerimpl.cpp

@@ -279,13 +279,13 @@ QString Net::DownloadHandlerImpl::errorCodeToString(const QNetworkReply::Network
     case QNetworkReply::ProxyAuthenticationRequiredError:
         return tr("The proxy requires authentication in order to honor the request but did not accept any credentials offered");
     case QNetworkReply::ContentAccessDenied:
-        return tr("The access to the remote content was denied (401)");
+        return tr("The access to the remote content was denied (403)");
     case QNetworkReply::ContentOperationNotPermittedError:
         return tr("The operation requested on the remote content is not permitted");
     case QNetworkReply::ContentNotFoundError:
         return tr("The remote content was not found at the server (404)");
     case QNetworkReply::AuthenticationRequiredError:
-        return tr("The remote server requires authentication to serve the content but the credentials provided were not accepted");
+        return tr("The remote server requires authentication to serve the content but the credentials provided were not accepted (401)");
     case QNetworkReply::ProtocolUnknownError:
         return tr("The Network Access API cannot honor the request because the protocol is not known");
     case QNetworkReply::ProtocolInvalidOperationError:

src/base/net/downloadmanager.cpp

@@ -265,38 +265,37 @@ void Net::DownloadManager::applyProxySettings()
     const auto *proxyManager = ProxyConfigurationManager::instance();
     const ProxyConfiguration proxyConfig = proxyManager->proxyConfiguration();
 
-    m_proxy = QNetworkProxy(QNetworkProxy::NoProxy);
+    switch (proxyConfig.type)
-
-    if ((proxyConfig.type == Net::ProxyType::None) || (proxyConfig.type == ProxyType::SOCKS4))
-        return;
-
-    // Proxy enabled
-    if (proxyConfig.type == ProxyType::SOCKS5)
     {
-        qDebug() << Q_FUNC_INFO << "using SOCKS proxy";
+    case Net::ProxyType::None:
-        m_proxy.setType(QNetworkProxy::Socks5Proxy);
+    case Net::ProxyType::SOCKS4:
-    }
+        m_proxy = QNetworkProxy(QNetworkProxy::NoProxy);
-    else
+        break;
-    {
-        qDebug() << Q_FUNC_INFO << "using HTTP proxy";
-        m_proxy.setType(QNetworkProxy::HttpProxy);
-    }
 
-    m_proxy.setHostName(proxyConfig.ip);
+    case Net::ProxyType::HTTP:
-    m_proxy.setPort(proxyConfig.port);
+        m_proxy = QNetworkProxy(
+            QNetworkProxy::HttpProxy
+            , proxyConfig.ip
+            , proxyConfig.port
+            , (proxyConfig.authEnabled ? proxyConfig.username : QString())
+            , (proxyConfig.authEnabled ? proxyConfig.password : QString()));
+        m_proxy.setCapabilities(proxyConfig.hostnameLookupEnabled
+            ? (m_proxy.capabilities() | QNetworkProxy::HostNameLookupCapability)
+            : (m_proxy.capabilities() & ~QNetworkProxy::HostNameLookupCapability));
+        break;
 
-    // Authentication?
+    case Net::ProxyType::SOCKS5:
-    if (proxyConfig.authEnabled)
+        m_proxy = QNetworkProxy(
-    {
+            QNetworkProxy::Socks5Proxy
-        qDebug("Proxy requires authentication, authenticating...");
+            , proxyConfig.ip
-        m_proxy.setUser(proxyConfig.username);
+            , proxyConfig.port
-        m_proxy.setPassword(proxyConfig.password);
+            , (proxyConfig.authEnabled ? proxyConfig.username : QString())
-    }
+            , (proxyConfig.authEnabled ? proxyConfig.password : QString()));
-
+        m_proxy.setCapabilities(proxyConfig.hostnameLookupEnabled
-    if (proxyConfig.hostnameLookupEnabled)
+            ? (m_proxy.capabilities() | QNetworkProxy::HostNameLookupCapability)
-        m_proxy.setCapabilities(m_proxy.capabilities() | QNetworkProxy::HostNameLookupCapability);
+            : (m_proxy.capabilities() & ~QNetworkProxy::HostNameLookupCapability));
-    else
+        break;
-        m_proxy.setCapabilities(m_proxy.capabilities() & ~QNetworkProxy::HostNameLookupCapability);
+    };
 }
 
 void Net::DownloadManager::processWaitingJobs(const ServiceID &serviceID)

src/base/net/smtp.cpp

@@ -148,8 +148,7 @@ void Smtp::sendMail(const QString &from, const QString &to, const QString &subje
     // Encode the body in base64
     QString crlfBody = body;
     const QByteArray b = crlfBody.replace(u"\n"_s, u"\r\n"_s).toUtf8().toBase64();
-    const int ct = b.length();
+    for (int i = 0, end = b.length(); i < end; i += 78)
-    for (int i = 0; i < ct; i += 78)
         m_message += b.mid(i, 78);
     m_from = from;
     m_rcpt = to;
@@ -190,8 +189,12 @@ void Smtp::readyRead()
     {
         const int pos = m_buffer.indexOf("\r\n");
         if (pos < 0) return; // Loop exit condition
-        const QByteArray line = m_buffer.left(pos);
+        const QByteArray line = m_buffer.first(pos);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+        m_buffer.slice(pos + 2);
+#else
         m_buffer.remove(0, (pos + 2));
+#endif
         qDebug() << "Response line:" << line;
         // Extract response code
         const QByteArray code = line.left(3);

src/base/path.cpp

@@ -94,7 +94,13 @@ bool Path::isValid() const
 #if defined(Q_OS_WIN)
     QStringView view = m_pathStr;
     if (hasDriveLetter(view))
-        view = view.mid(3);
+    {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+        view.slice(3);
+#else
+        view = view.sliced(3);
+#endif
+    }
 
     // \\37 is using base-8 number system
     const QRegularExpression regex {u"[\\0-\\37:?\"*<>|]"_s};
@@ -147,9 +153,9 @@ Path Path::rootItem() const
 #ifdef Q_OS_WIN
     // should be `c:/` instead of `c:`
     if ((slashIndex == 2) && hasDriveLetter(m_pathStr))
-        return createUnchecked(m_pathStr.left(slashIndex + 1));
+        return createUnchecked(m_pathStr.first(slashIndex + 1));
 #endif
-    return createUnchecked(m_pathStr.left(slashIndex));
+    return createUnchecked(m_pathStr.first(slashIndex));
 }
 
 Path Path::parentPath() const
@@ -167,9 +173,9 @@ Path Path::parentPath() const
     // should be `c:/` instead of `c:`
     // Windows "drive letter" is limited to one alphabet
     if ((slashIndex == 2) && hasDriveLetter(m_pathStr))
-        return (m_pathStr.size() == 3) ? Path() : createUnchecked(m_pathStr.left(slashIndex + 1));
+        return (m_pathStr.size() == 3) ? Path() : createUnchecked(m_pathStr.first(slashIndex + 1));
 #endif
-    return createUnchecked(m_pathStr.left(slashIndex));
+    return createUnchecked(m_pathStr.first(slashIndex));
 }
 
 QString Path::filename() const
@@ -178,7 +184,7 @@ QString Path::filename() const
     if (slashIndex == -1)
         return m_pathStr;
 
-    return m_pathStr.mid(slashIndex + 1);
+    return m_pathStr.sliced(slashIndex + 1);
 }
 
 QString Path::extension() const
@@ -188,9 +194,9 @@ QString Path::extension() const
         return (u"." + suffix);
 
     const int slashIndex = m_pathStr.lastIndexOf(u'/');
-    const auto filename = QStringView(m_pathStr).mid(slashIndex + 1);
+    const auto filename = QStringView(m_pathStr).sliced(slashIndex + 1);
     const int dotIndex = filename.lastIndexOf(u'.', -2);
-    return ((dotIndex == -1) ? QString() : filename.mid(dotIndex).toString());
+    return ((dotIndex == -1) ? QString() : filename.sliced(dotIndex).toString());
 }
 
 bool Path::hasExtension(const QStringView ext) const
@@ -293,7 +299,7 @@ Path Path::commonPath(const Path &left, const Path &right)
     if (commonItemsCount > 0)
         commonPathSize += (commonItemsCount - 1); // size of intermediate separators
 
-    return Path::createUnchecked(left.m_pathStr.left(commonPathSize));
+    return Path::createUnchecked(left.m_pathStr.first(commonPathSize));
 }
 
 Path Path::findRootFolder(const PathList &filePaths)
@@ -322,7 +328,13 @@ void Path::stripRootFolder(PathList &filePaths)
         return;
 
     for (Path &filePath : filePaths)
+    {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+        filePath.m_pathStr.slice(commonRootFolder.m_pathStr.size() + 1);
+#else
         filePath.m_pathStr.remove(0, (commonRootFolder.m_pathStr.size() + 1));
+#endif
+    }
 }
 
 void Path::addRootFolder(PathList &filePaths, const Path &rootFolder)

src/base/preferences.cpp

@@ -359,6 +359,19 @@ void Preferences::setStatusbarDisplayed(const bool displayed)
     setValue(u"Preferences/General/StatusbarDisplayed"_s, displayed);
 }
 
+bool Preferences::isStatusbarFreeDiskSpaceDisplayed() const
+{
+    return value(u"Preferences/General/StatusbarFreeDiskSpaceDisplayed"_s, false);
+}
+
+void Preferences::setStatusbarFreeDiskSpaceDisplayed(const bool displayed)
+{
+    if (displayed == isStatusbarFreeDiskSpaceDisplayed())
+        return;
+
+    setValue(u"Preferences/General/StatusbarFreeDiskSpaceDisplayed"_s, displayed);
+}
+
 bool Preferences::isStatusbarExternalIPDisplayed() const
 {
     return value(u"Preferences/General/StatusbarExternalIPDisplayed"_s, false);

src/base/preferences.h

@@ -119,6 +119,8 @@ public:
     void setHideZeroComboValues(int n);
     bool isStatusbarDisplayed() const;
     void setStatusbarDisplayed(bool displayed);
+    bool isStatusbarFreeDiskSpaceDisplayed() const;
+    void setStatusbarFreeDiskSpaceDisplayed(bool displayed);
     bool isStatusbarExternalIPDisplayed() const;
     void setStatusbarExternalIPDisplayed(bool displayed);
     bool isToolbarDisplayed() const;

src/base/rss/rss_article.cpp

@@ -48,16 +48,16 @@ const QString Article::KeyIsRead = u"isRead"_s;
 
 Article::Article(Feed *feed, const QVariantHash &varHash)
     : QObject(feed)
-    , m_feed(feed)
+    , m_feed {feed}
-    , m_guid(varHash.value(KeyId).toString())
+    , m_guid {varHash.value(KeyId).toString()}
-    , m_date(varHash.value(KeyDate).toDateTime())
+    , m_date {varHash.value(KeyDate).toDateTime()}
-    , m_title(varHash.value(KeyTitle).toString())
+    , m_title {varHash.value(KeyTitle).toString()}
-    , m_author(varHash.value(KeyAuthor).toString())
+    , m_author {varHash.value(KeyAuthor).toString()}
-    , m_description(varHash.value(KeyDescription).toString())
+    , m_description {varHash.value(KeyDescription).toString()}
-    , m_torrentURL(varHash.value(KeyTorrentURL).toString())
+    , m_torrentURL {varHash.value(KeyTorrentURL).toString()}
-    , m_link(varHash.value(KeyLink).toString())
+    , m_link {varHash.value(KeyLink).toString()}
-    , m_isRead(varHash.value(KeyIsRead, false).toBool())
+    , m_isRead {varHash.value(KeyIsRead, false).toBool()}
-    , m_data(varHash)
+    , m_data {varHash}
 {
 }
 

src/base/rss/rss_autodownloader.cpp

@@ -43,6 +43,7 @@
 
 #include "base/addtorrentmanager.h"
 #include "base/asyncfilestorage.h"
+#include "base/bittorrent/addtorrenterror.h"
 #include "base/bittorrent/session.h"
 #include "base/bittorrent/torrentdescriptor.h"
 #include "base/global.h"

src/base/rss/rss_autodownloader.h

@@ -37,7 +37,6 @@
 #include <QSharedPointer>
 
 #include "base/applicationcomponent.h"
-#include "base/bittorrent/addtorrenterror.h"
 #include "base/exceptions.h"
 #include "base/settingvalue.h"
 #include "base/utils/thread.h"
@@ -48,6 +47,11 @@ class Application;
 class AsyncFileStorage;
 struct ProcessingJob;
 
+namespace BitTorrent
+{
+    struct AddTorrentError;
+}
+
 namespace RSS
 {
     class Article;

src/base/rss/rss_autodownloadrule.cpp

@@ -184,14 +184,10 @@ QString computeEpisodeName(const QString &article)
     for (int i = 1; i <= match.lastCapturedIndex(); ++i)
     {
         const QString cap = match.captured(i);
-
         if (cap.isEmpty())
             continue;
 
-        bool isInt = false;
+        ret.append(cap);
-        const int x = cap.toInt(&isInt);
-
-        ret.append(isInt ? QString::number(x) : cap);
     }
     return ret.join(u'x');
 }
@@ -293,20 +289,26 @@ bool AutoDownloadRule::matchesEpisodeFilterExpression(const QString &articleTitl
     if (!matcher.hasMatch())
         return false;
 
-    const QString season {matcher.captured(1)};
+    const QStringView season {matcher.capturedView(1)};
-    const QStringList episodes {matcher.captured(2).split(u';')};
+    const QList<QStringView> episodes {matcher.capturedView(2).split(u';')};
     const int seasonOurs {season.toInt()};
 
-    for (QString episode : episodes)
+    for (QStringView episode : episodes)
     {
         if (episode.isEmpty())
             continue;
 
         // We need to trim leading zeroes, but if it's all zeros then we want episode zero.
         while ((episode.size() > 1) && episode.startsWith(u'0'))
-            episode = episode.right(episode.size() - 1);
+        {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+            episode.slice(1);
+#else
+            episode = episode.sliced(1);
+#endif
+        }
 
-        if (episode.indexOf(u'-') != -1)
+        if (episode.contains(u'-'))
         { // Range detected
             const QString partialPattern1 {u"\\bs0?(\\d{1,4})[ -_\\.]?e(0?\\d{1,4})(?:\\D|\\b)"_s};
             const QString partialPattern2 {u"\\b(\\d{1,4})x(0?\\d{1,4})(?:\\D|\\b)"_s};
@@ -323,24 +325,25 @@ bool AutoDownloadRule::matchesEpisodeFilterExpression(const QString &articleTitl
 
             if (matched)
             {
-                const int seasonTheirs {matcher.captured(1).toInt()};
+                const int seasonTheirs {matcher.capturedView(1).toInt()};
-                const int episodeTheirs {matcher.captured(2).toInt()};
+                const int episodeTheirs {matcher.capturedView(2).toInt()};
 
                 if (episode.endsWith(u'-'))
                 { // Infinite range
-                    const int episodeOurs {QStringView(episode).left(episode.size() - 1).toInt()};
+                    const int episodeOurs {QStringView(episode).chopped(1).toInt()};
                     if (((seasonTheirs == seasonOurs) && (episodeTheirs >= episodeOurs)) || (seasonTheirs > seasonOurs))
                         return true;
                 }
                 else
                 { // Normal range
-                    const QStringList range {episode.split(u'-')};
+                    const QList<QStringView> range {episode.split(u'-')};
                     Q_ASSERT(range.size() == 2);
-                    if (range.first().toInt() > range.last().toInt())
-                        continue; // Ignore this subrule completely
 
                     const int episodeOursFirst {range.first().toInt()};
                     const int episodeOursLast {range.last().toInt()};
+                    if (episodeOursFirst > episodeOursLast)
+                        continue; // Ignore this subrule completely
+
                     if ((seasonTheirs == seasonOurs) && ((episodeOursFirst <= episodeTheirs) && (episodeOursLast >= episodeTheirs)))
                         return true;
                 }

src/base/rss/rss_feed.cpp

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2024  Jonathan Ketchker
- * Copyright (C) 2015-2022  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
  * Copyright (C) 2010  Arnaud Demaiziere <arnaud@qbittorrent.org>
  *
@@ -56,19 +56,22 @@
 
 const QString KEY_UID = u"uid"_s;
 const QString KEY_URL = u"url"_s;
+const QString KEY_REFRESHINTERVAL = u"refreshInterval"_s;
 const QString KEY_TITLE = u"title"_s;
 const QString KEY_LASTBUILDDATE = u"lastBuildDate"_s;
 const QString KEY_ISLOADING = u"isLoading"_s;
 const QString KEY_HASERROR = u"hasError"_s;
 const QString KEY_ARTICLES = u"articles"_s;
 
+using namespace std::chrono_literals;
 using namespace RSS;
 
-Feed::Feed(const QUuid &uid, const QString &url, const QString &path, Session *session)
+Feed::Feed(Session *session, const QUuid &uid, const QString &url, const QString &path, const std::chrono::seconds refreshInterval)
     : Item(path)
-    , m_session(session)
+    , m_session {session}
-    , m_uid(uid)
+    , m_uid {uid}
-    , m_url(url)
+    , m_url {url}
+    , m_refreshInterval {refreshInterval}
 {
     const auto uidHex = QString::fromLatin1(m_uid.toRfc4122().toHex());
     m_dataFileName = Path(uidHex + u".json");
@@ -327,9 +330,9 @@ bool Feed::addArticle(const QVariantHash &articleData)
 
     // Insertion sort
     const int maxArticles = m_session->maxArticlesPerFeed();
-    const auto lowerBound = std::lower_bound(m_articlesByDate.begin(), m_articlesByDate.end()
+    const auto lowerBound = std::lower_bound(m_articlesByDate.cbegin(), m_articlesByDate.cend()
-                                       , articleData.value(Article::KeyDate).toDateTime(), Article::articleDateRecentThan);
+        , articleData.value(Article::KeyDate).toDateTime(), Article::articleDateRecentThan);
-    if ((lowerBound - m_articlesByDate.begin()) >= maxArticles)
+    if ((lowerBound - m_articlesByDate.cbegin()) >= maxArticles)
         return false; // we reach max articles
 
     auto *article = new Article(this, articleData);
@@ -462,6 +465,20 @@ Path Feed::iconPath() const
     return m_iconPath;
 }
 
+std::chrono::seconds Feed::refreshInterval() const
+{
+    return m_refreshInterval;
+}
+
+void Feed::setRefreshInterval(const std::chrono::seconds refreshInterval)
+{
+    if (refreshInterval == m_refreshInterval)
+        return;
+
+    const std::chrono::seconds oldRefreshInterval = std::exchange(m_refreshInterval, refreshInterval);
+    emit refreshIntervalChanged(oldRefreshInterval);
+}
+
 void Feed::setURL(const QString &url)
 {
     const QString oldURL = m_url;
@@ -474,6 +491,8 @@ QJsonValue Feed::toJsonValue(const bool withData) const
     QJsonObject jsonObj;
     jsonObj.insert(KEY_UID, uid().toString());
     jsonObj.insert(KEY_URL, url());
+    if (refreshInterval() > 0s)
+        jsonObj.insert(KEY_REFRESHINTERVAL, static_cast<qint64>(refreshInterval().count()));
 
     if (withData)
     {

src/base/rss/rss_feed.h

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2024  Jonathan Ketchker
- * Copyright (C) 2015-2022  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
  * Copyright (C) 2010  Arnaud Demaiziere <arnaud@qbittorrent.org>
  *
@@ -31,6 +31,8 @@
 
 #pragma once
 
+#include <chrono>
+
 #include <QtContainerFwd>
 #include <QBasicTimer>
 #include <QHash>
@@ -68,7 +70,7 @@ namespace RSS
 
         friend class Session;
 
-        Feed(const QUuid &uid, const QString &url, const QString &path, Session *session);
+        Feed(Session *session, const QUuid &uid, const QString &url, const QString &path, std::chrono::seconds refreshInterval);
         ~Feed() override;
 
     public:
@@ -87,6 +89,9 @@ namespace RSS
         Article *articleByGUID(const QString &guid) const;
         Path iconPath() const;
 
+        std::chrono::seconds refreshInterval() const;
+        void setRefreshInterval(std::chrono::seconds refreshInterval);
+
         QJsonValue toJsonValue(bool withData = false) const override;
 
     signals:
@@ -94,6 +99,7 @@ namespace RSS
         void titleChanged(Feed *feed = nullptr);
         void stateChanged(Feed *feed = nullptr);
         void urlChanged(const QString &oldURL);
+        void refreshIntervalChanged(std::chrono::seconds oldRefreshInterval);
 
     private slots:
         void handleSessionProcessingEnabledChanged(bool enabled);
@@ -123,6 +129,7 @@ namespace RSS
         Private::FeedSerializer *m_serializer = nullptr;
         const QUuid m_uid;
         QString m_url;
+        std::chrono::seconds m_refreshInterval;
         QString m_title;
         QString m_lastBuildDate;
         bool m_hasError = false;

src/base/rss/rss_item.cpp

@@ -97,7 +97,7 @@ QStringList Item::expandPath(const QString &path)
     int index = 0;
     while ((index = path.indexOf(Item::PathSeparator, index)) >= 0)
     {
-        result << path.left(index);
+        result << path.first(index);
         ++index;
     }
     result << path;
@@ -108,11 +108,11 @@ QStringList Item::expandPath(const QString &path)
 QString Item::parentPath(const QString &path)
 {
     const int pos = path.lastIndexOf(Item::PathSeparator);
-    return (pos >= 0) ? path.left(pos) : QString();
+    return (pos >= 0) ? path.first(pos) : QString();
 }
 
 QString Item::relativeName(const QString &path)
 {
-    int pos;
+    const int pos = path.lastIndexOf(Item::PathSeparator);
-    return ((pos = path.lastIndexOf(Item::PathSeparator)) >= 0 ? path.right(path.size() - (pos + 1)) : path);
+    return (pos >= 0) ? path.sliced(pos + 1) : path;
 }

src/base/rss/rss_parser.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2012  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or

src/base/rss/rss_parser.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2012  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or

src/base/rss/rss_session.cpp

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2017-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2024  Jonathan Ketchker
- * Copyright (C) 2017  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
  * Copyright (C) 2010  Arnaud Demaiziere <arnaud@qbittorrent.org>
  *
@@ -56,6 +56,7 @@ const QString CONF_FOLDER_NAME = u"rss"_s;
 const QString DATA_FOLDER_NAME = u"rss/articles"_s;
 const QString FEEDS_FILE_NAME = u"feeds.json"_s;
 
+using namespace std::chrono_literals;
 using namespace RSS;
 
 QPointer<Session> Session::m_instance = nullptr;
@@ -94,12 +95,10 @@ Session::Session()
     m_workingThread->start();
     load();
 
+    m_refreshTimer.setSingleShot(true);
     connect(&m_refreshTimer, &QTimer::timeout, this, &Session::refresh);
     if (isProcessingEnabled())
-    {
-        m_refreshTimer.start(std::chrono::minutes(refreshInterval()));
         refresh();
-    }
 
     // Remove legacy/corrupted settings
     // (at least on Windows, QSettings is case-insensitive and it can get
@@ -138,19 +137,20 @@ Session *Session::instance()
     return m_instance;
 }
 
-nonstd::expected<void, QString> Session::addFolder(const QString &path)
+nonstd::expected<Folder *, QString> Session::addFolder(const QString &path)
 {
     const nonstd::expected<Folder *, QString> result = prepareItemDest(path);
     if (!result)
         return result.get_unexpected();
 
     auto *destFolder = result.value();
-    addItem(new Folder(path), destFolder);
+    auto *folder = new Folder(path);
+    addItem(folder, destFolder);
     store();
-    return {};
+    return folder;
 }
 
-nonstd::expected<void, QString> Session::addFeed(const QString &url, const QString &path)
+nonstd::expected<Feed *, QString> Session::addFeed(const QString &url, const QString &path, const std::chrono::seconds refreshInterval)
 {
     if (m_feedsByURL.contains(url))
         return nonstd::make_unexpected(tr("RSS feed with given URL already exists: %1.").arg(url));
@@ -160,13 +160,13 @@ nonstd::expected<void, QString> Session::addFeed(const QString &url, const QStri
         return result.get_unexpected();
 
     auto *destFolder = result.value();
-    auto *feed = new Feed(generateUID(), url, path, this);
+    auto *feed = new Feed(this, generateUID(), url, path, refreshInterval);
     addItem(feed, destFolder);
     store();
     if (isProcessingEnabled())
-        feed->refresh();
+        refreshFeed(feed, std::chrono::system_clock::now());
 
-    return {};
+    return feed;
 }
 
 nonstd::expected<void, QString> Session::setFeedURL(const QString &path, const QString &url)
@@ -192,7 +192,7 @@ nonstd::expected<void, QString> Session::setFeedURL(Feed *feed, const QString &u
     feed->setURL(url);
     store();
     if (isProcessingEnabled())
-        feed->refresh();
+        refreshFeed(feed, std::chrono::system_clock::now());
 
     return {};
 }
@@ -214,14 +214,20 @@ nonstd::expected<void, QString> Session::moveItem(Item *item, const QString &des
     Q_ASSERT(item);
     Q_ASSERT(item != rootFolder());
 
+    if (item->path() == destPath)
+        return {};
+
+    if (auto *folder = static_cast<Folder *>(item)) // if `item` is a `Folder`
+    {
+        if (destPath.startsWith(folder->path() + Item::PathSeparator))
+            return nonstd::make_unexpected(tr("Can't move a folder into itself or its subfolders."));
+    }
+
     const nonstd::expected<Folder *, QString> result = prepareItemDest(destPath);
     if (!result)
         return result.get_unexpected();
 
     auto *destFolder = result.value();
-    if (static_cast<Item *>(destFolder) == item)
-        return nonstd::make_unexpected(tr("Couldn't move folder into itself."));
-
     auto *srcFolder = static_cast<Folder *>(m_itemsByPath.value(Item::parentPath(item->path())));
     if (srcFolder != destFolder)
     {
@@ -314,7 +320,7 @@ bool Session::loadFolder(const QJsonObject &jsonObj, Folder *folder)
             QString url = val.toString();
             if (url.isEmpty())
                 url = key;
-            addFeedToFolder(generateUID(), url, key, folder);
+            addFeedToFolder(generateUID(), url, key, folder, 0s);
             updated = true;
         }
         else if (val.isObject())
@@ -354,7 +360,9 @@ bool Session::loadFolder(const QJsonObject &jsonObj, Folder *folder)
                     updated = true;
                 }
 
-                addFeedToFolder(uid, valObj[u"url"].toString(), key, folder);
+                const auto refreshInterval = std::chrono::seconds(valObj[u"refreshInterval"].toInteger());
+
+                addFeedToFolder(uid, valObj[u"url"].toString(), key, folder, refreshInterval);
             }
             else
             {
@@ -385,8 +393,14 @@ void Session::loadLegacy()
     uint i = 0;
     for (QString legacyPath : legacyFeedPaths)
     {
-        if (Item::PathSeparator == legacyPath[0])
+        if (legacyPath.startsWith(Item::PathSeparator))
+        {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
+            legacyPath.slice(1);
+#else
             legacyPath.remove(0, 1);
+#endif
+        }
         const QString parentFolderPath = Item::parentPath(legacyPath);
         const QString feedUrl = Item::relativeName(legacyPath);
 
@@ -404,7 +418,7 @@ void Session::loadLegacy()
 void Session::store()
 {
     m_confFileStorage->store(Path(FEEDS_FILE_NAME)
-                             , QJsonDocument(rootFolder()->toJsonValue().toObject()).toJson());
+            , QJsonDocument(rootFolder()->toJsonValue().toObject()).toJson());
 }
 
 nonstd::expected<Folder *, QString> Session::prepareItemDest(const QString &path)
@@ -430,9 +444,9 @@ Folder *Session::addSubfolder(const QString &name, Folder *parentFolder)
     return folder;
 }
 
-Feed *Session::addFeedToFolder(const QUuid &uid, const QString &url, const QString &name, Folder *parentFolder)
+Feed *Session::addFeedToFolder(const QUuid &uid, const QString &url, const QString &name, Folder *parentFolder, const std::chrono::seconds refreshInterval)
 {
-    auto *feed = new Feed(uid, url, Item::joinPath(parentFolder->path(), name), this);
+    auto *feed = new Feed(this, uid, url, Item::joinPath(parentFolder->path(), name), refreshInterval);
     addItem(feed, parentFolder);
     return feed;
 }
@@ -454,8 +468,25 @@ void Session::addItem(Item *item, Folder *destFolder)
 
             emit feedURLChanged(feed, oldURL);
         });
+        connect(feed, &Feed::refreshIntervalChanged, this, [this, feed](const std::chrono::seconds oldRefreshInterval)
+        {
+            store();
+
+            std::chrono::system_clock::time_point &nextRefresh = m_refreshTimepoints[feed];
+            if (nextRefresh > std::chrono::system_clock::time_point())
+                nextRefresh += feed->refreshInterval() - oldRefreshInterval;
+
+            if (isProcessingEnabled())
+            {
+                const std::chrono::seconds oldEffectiveRefreshInterval = (oldRefreshInterval > 0s)
+                        ? oldRefreshInterval : std::chrono::minutes(refreshInterval());
+                if (feed->refreshInterval() < oldEffectiveRefreshInterval)
+                    refresh();
+            }
+        });
         m_feedsByUID[feed->uid()] = feed;
         m_feedsByURL[feed->url()] = feed;
+        m_refreshTimepoints.emplace(feed, std::chrono::system_clock::time_point());
     }
 
     connect(item, &Item::pathChanged, this, &Session::itemPathChanged);
@@ -476,14 +507,9 @@ void Session::setProcessingEnabled(const bool enabled)
     {
         m_storeProcessingEnabled = enabled;
         if (enabled)
-        {
-            m_refreshTimer.start(std::chrono::minutes(refreshInterval()));
             refresh();
-        }
         else
-        {
             m_refreshTimer.stop();
-        }
 
         emit processingStateChanged(enabled);
     }
@@ -554,6 +580,7 @@ void Session::handleItemAboutToBeDestroyed(Item *item)
     {
         m_feedsByUID.remove(feed->uid());
         m_feedsByURL.remove(feed->url());
+        m_refreshTimepoints.remove(feed);
     }
 }
 
@@ -592,6 +619,28 @@ void Session::setMaxArticlesPerFeed(const int n)
 
 void Session::refresh()
 {
-    // NOTE: Should we allow manually refreshing for disabled session?
+    const auto currentTimepoint = std::chrono::system_clock::now();
-    rootFolder()->refresh();
+    std::chrono::seconds nextRefreshInterval = 0s;
+    for (auto it = m_refreshTimepoints.begin(); it != m_refreshTimepoints.end(); ++it)
+    {
+        Feed *feed = it.key();
+        std::chrono::system_clock::time_point &timepoint = it.value();
+
+        if (timepoint <= currentTimepoint)
+            timepoint = refreshFeed(feed, currentTimepoint);
+
+        const auto interval = std::chrono::duration_cast<std::chrono::seconds>(timepoint - currentTimepoint);
+        if ((interval < nextRefreshInterval) || (nextRefreshInterval == 0s))
+            nextRefreshInterval = interval;
+    }
+
+    m_refreshTimer.start(nextRefreshInterval);
+}
+
+std::chrono::system_clock::time_point Session::refreshFeed(Feed *feed, const std::chrono::system_clock::time_point &currentTimepoint)
+{
+    feed->refresh();
+    const std::chrono::seconds feedRefreshInterval = feed->refreshInterval();
+    const std::chrono::seconds effectiveRefreshInterval = (feedRefreshInterval > 0s) ? feedRefreshInterval : std::chrono::minutes(refreshInterval());
+    return currentTimepoint + effectiveRefreshInterval;
 }

src/base/rss/rss_session.h

@@ -1,7 +1,7 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2017-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2024  Jonathan Ketchker
- * Copyright (C) 2017  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
  * Copyright (C) 2010  Arnaud Demaiziere <arnaud@qbittorrent.org>
  *
@@ -35,26 +35,20 @@
  * RSS Session configuration file format (JSON):
  *
  * =============== BEGIN ===============
- *
+ * {
- {
+ *     "folder1": {
- *     "folder1":
+ *         "subfolder1": {
- {
+ *             "Feed name 1 (Alias)": {
- *         "subfolder1":
- {
- *             "Feed name 1 (Alias)":
- {
  *                 "uid": "feed unique identifier",
  *                 "url": "http://some-feed-url1"
  *             }
- *             "Feed name 2 (Alias)":
+ *             "Feed name 2 (Alias)": {
- {
  *                 "uid": "feed unique identifier",
  *                 "url": "http://some-feed-url2"
  *             }
  *         },
  *         "subfolder2": {},
- *         "Feed name 3 (Alias)":
+ *         "Feed name 3 (Alias)": {
- {
  *             "uid": "feed unique identifier",
  *             "url": "http://some-feed-url3"
  *         }
@@ -120,8 +114,8 @@ namespace RSS
         std::chrono::seconds fetchDelay() const;
         void setFetchDelay(std::chrono::seconds delay);
 
-        nonstd::expected<void, QString> addFolder(const QString &path);
+        nonstd::expected<Folder *, QString> addFolder(const QString &path);
-        nonstd::expected<void, QString> addFeed(const QString &url, const QString &path);
+        nonstd::expected<Feed *, QString> addFeed(const QString &url, const QString &path, std::chrono::seconds refreshInterval = {});
         nonstd::expected<void, QString> setFeedURL(const QString &path, const QString &url);
         nonstd::expected<void, QString> setFeedURL(Feed *feed, const QString &url);
         nonstd::expected<void, QString> moveItem(const QString &itemPath, const QString &destPath);
@@ -135,9 +129,6 @@ namespace RSS
 
         Folder *rootFolder() const;
 
-    public slots:
-        void refresh();
-
     signals:
         void processingStateChanged(bool enabled);
         void maxArticlesPerFeedChanged(int n);
@@ -160,8 +151,10 @@ namespace RSS
         void store();
         nonstd::expected<Folder *, QString> prepareItemDest(const QString &path);
         Folder *addSubfolder(const QString &name, Folder *parentFolder);
-        Feed *addFeedToFolder(const QUuid &uid, const QString &url, const QString &name, Folder *parentFolder);
+        Feed *addFeedToFolder(const QUuid &uid, const QString &url, const QString &name, Folder *parentFolder, std::chrono::seconds refreshInterval);
         void addItem(Item *item, Folder *destFolder);
+        void refresh();
+        std::chrono::system_clock::time_point refreshFeed(Feed *feed, const std::chrono::system_clock::time_point &currentTimepoint);
 
         static QPointer<Session> m_instance;
 
@@ -176,5 +169,6 @@ namespace RSS
         QHash<QString, Item *> m_itemsByPath;
         QHash<QUuid, Feed *> m_feedsByUID;
         QHash<QString, Feed *> m_feedsByURL;
+        QHash<Feed *, std::chrono::system_clock::time_point> m_refreshTimepoints;
     };
 }

src/base/search/searchdownloadhandler.cpp

@@ -41,7 +41,10 @@ SearchDownloadHandler::SearchDownloadHandler(const QString &pluginName, const QS
     , m_manager {manager}
     , m_downloadProcess {new QProcess(this)}
 {
-    m_downloadProcess->setEnvironment(QProcess::systemEnvironment());
+    m_downloadProcess->setProcessEnvironment(m_manager->proxyEnvironment());
+#ifdef Q_OS_UNIX
+    m_downloadProcess->setUnixProcessParameters(QProcess::UnixProcessFlag::CloseFileDescriptors);
+#endif
     connect(m_downloadProcess, qOverload<int, QProcess::ExitStatus>(&QProcess::finished)
             , this, &SearchDownloadHandler::downloadProcessFinished);
     const QStringList params
@@ -52,7 +55,7 @@ SearchDownloadHandler::SearchDownloadHandler(const QString &pluginName, const QS
         url
     };
     // Launch search
-    m_downloadProcess->start(Utils::ForeignApps::pythonInfo().executableName, params, QIODevice::ReadOnly);
+    m_downloadProcess->start(Utils::ForeignApps::pythonInfo().executablePath.data(), params, QIODevice::ReadOnly);
 }
 
 void SearchDownloadHandler::downloadProcessFinished(int exitcode)

src/base/search/searchhandler.cpp

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -38,6 +38,7 @@
 
 #include "base/global.h"
 #include "base/path.h"
+#include "base/utils/bytearray.h"
 #include "base/utils/foreignapps.h"
 #include "base/utils/fs.h"
 #include "searchpluginmanager.h"
@@ -70,7 +71,11 @@ SearchHandler::SearchHandler(const QString &pattern, const QString &category, co
     , m_searchTimeout {new QTimer(this)}
 {
     // Load environment variables (proxy)
-    m_searchProcess->setEnvironment(QProcess::systemEnvironment());
+    m_searchProcess->setProcessEnvironment(m_manager->proxyEnvironment());
+    m_searchProcess->setProgram(Utils::ForeignApps::pythonInfo().executablePath.data());
+#ifdef Q_OS_UNIX
+    m_searchProcess->setUnixProcessParameters(QProcess::UnixProcessFlag::CloseFileDescriptors);
+#endif
 
     const QStringList params
     {
@@ -79,9 +84,6 @@ SearchHandler::SearchHandler(const QString &pattern, const QString &category, co
         m_usedPlugins.join(u','),
         m_category
     };
-
-    // Launch search
-    m_searchProcess->setProgram(Utils::ForeignApps::pythonInfo().executableName);
     m_searchProcess->setArguments(params + m_pattern.split(u' '));
 
     connect(m_searchProcess, &QProcess::errorOccurred, this, &SearchHandler::processFailed);
@@ -93,6 +95,7 @@ SearchHandler::SearchHandler(const QString &pattern, const QString &category, co
     connect(m_searchTimeout, &QTimer::timeout, this, &SearchHandler::cancelSearch);
     m_searchTimeout->start(3min);
 
+    // Launch search
     // deferred start allows clients to handle starting-related signals
     QMetaObject::invokeMethod(this, [this]() { m_searchProcess->start(QIODevice::ReadOnly); }
         , Qt::QueuedConnection);
@@ -137,28 +140,23 @@ void SearchHandler::processFinished(const int exitcode)
 // line to SearchResult calling parseSearchResult().
 void SearchHandler::readSearchOutput()
 {
-    QByteArray output = m_searchProcess->readAllStandardOutput();
+    const QByteArray output = m_searchResultLineTruncated + m_searchProcess->readAllStandardOutput();
-    output.replace('\r', "");
+    QList<QByteArrayView> lines = Utils::ByteArray::splitToViews(output, "\n", Qt::KeepEmptyParts);
 
-    QList<QByteArray> lines = output.split('\n');
+    m_searchResultLineTruncated = lines.takeLast().trimmed().toByteArray();
-    if (!m_searchResultLineTruncated.isEmpty())
-        lines.prepend(m_searchResultLineTruncated + lines.takeFirst());
-    m_searchResultLineTruncated = lines.takeLast().trimmed();
 
     QList<SearchResult> searchResultList;
     searchResultList.reserve(lines.size());
 
-    for (const QByteArray &line : asConst(lines))
+    for (const QByteArrayView &line : asConst(lines))
     {
-        SearchResult searchResult;
+        if (SearchResult searchResult; parseSearchResult(line, searchResult))
-        if (parseSearchResult(QString::fromUtf8(line), searchResult))
+            searchResultList.append(std::move(searchResult));
-            searchResultList << searchResult;
     }
 
     if (!searchResultList.isEmpty())
     {
-        for (const SearchResult &result : searchResultList)
+        m_results.append(searchResultList);
-            m_results.append(result);
         emit newSearchResults(searchResultList);
     }
 }
@@ -172,17 +170,17 @@ void SearchHandler::processFailed()
 // Parse one line of search results list
 // Line is in the following form:
 // file url | file name | file size | nb seeds | nb leechers | Search engine url
-bool SearchHandler::parseSearchResult(const QStringView line, SearchResult &searchResult)
+bool SearchHandler::parseSearchResult(const QByteArrayView line, SearchResult &searchResult)
 {
-    const QList<QStringView> parts = line.split(u'|');
+    const QList<QByteArrayView> parts = Utils::ByteArray::splitToViews(line, "|");
     const int nbFields = parts.size();
 
     if (nbFields <= PL_ENGINE_URL)
         return false; // Anything after ENGINE_URL is optional
 
     searchResult = SearchResult();
-    searchResult.fileUrl = parts.at(PL_DL_LINK).trimmed().toString(); // download URL
+    searchResult.fileUrl = QString::fromUtf8(parts.at(PL_DL_LINK).trimmed()); // download URL
-    searchResult.fileName = parts.at(PL_NAME).trimmed().toString(); // Name
+    searchResult.fileName = QString::fromUtf8(parts.at(PL_NAME).trimmed()); // Name
     searchResult.fileSize = parts.at(PL_SIZE).trimmed().toLongLong(); // Size
 
     bool ok = false;
@@ -195,11 +193,11 @@ bool SearchHandler::parseSearchResult(const QStringView line, SearchResult &sear
     if (!ok || (searchResult.nbLeechers < 0))
         searchResult.nbLeechers = -1;
 
-    searchResult.siteUrl = parts.at(PL_ENGINE_URL).trimmed().toString(); // Search engine site URL
+    searchResult.siteUrl = QString::fromUtf8(parts.at(PL_ENGINE_URL).trimmed()); // Search engine site URL
     searchResult.engineName = m_manager->pluginNameBySiteURL(searchResult.siteUrl); // Search engine name
 
     if (nbFields > PL_DESC_LINK)
-        searchResult.descrLink = parts.at(PL_DESC_LINK).trimmed().toString(); // Description Link
+        searchResult.descrLink = QString::fromUtf8(parts.at(PL_DESC_LINK).trimmed()); // Description Link
 
     if (nbFields > PL_PUB_DATE)
     {

src/base/search/searchhandler.h

@@ -1,6 +1,6 @@
 /*
  * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2015-2024 Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2015-2025  Vladimir Golovnev <glassez@yandex.ru>
  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
  *
  * This program is free software; you can redistribute it and/or
@@ -81,7 +81,7 @@ private:
     void readSearchOutput();
     void processFailed();
     void processFinished(int exitcode);
-    bool parseSearchResult(QStringView line, SearchResult &searchResult);
+    bool parseSearchResult(QByteArrayView line, SearchResult &searchResult);
 
     const QString m_pattern;
     const QString m_category;

src/base/search/searchpluginmanager.cpp

@@ -88,6 +88,7 @@ QPointer<SearchPluginManager> SearchPluginManager::m_instance = nullptr;
 
 SearchPluginManager::SearchPluginManager()
     : m_updateUrl(u"https://searchplugins.qbittorrent.org/nova3/engines/"_s)
+    , m_proxyEnv {QProcessEnvironment::systemEnvironment()}
 {
     Q_ASSERT(!m_instance); // only one instance is allowed
     m_instance = this;
@@ -362,6 +363,11 @@ SearchHandler *SearchPluginManager::startSearch(const QString &pattern, const QS
     return new SearchHandler(pattern, category, usedPlugins, this);
 }
 
+QProcessEnvironment SearchPluginManager::proxyEnvironment() const
+{
+    return m_proxyEnv;
+}
+
 QString SearchPluginManager::categoryFullName(const QString &categoryName)
 {
     const QHash<QString, QString> categoryTable
@@ -403,50 +409,70 @@ Path SearchPluginManager::engineLocation()
 
 void SearchPluginManager::applyProxySettings()
 {
-    const auto *proxyManager = Net::ProxyConfigurationManager::instance();
+    // for python `urllib`: https://docs.python.org/3/library/urllib.request.html#urllib.request.ProxyHandler
-    const Net::ProxyConfiguration proxyConfig = proxyManager->proxyConfiguration();
+    const QString HTTP_PROXY = u"http_proxy"_s;
+    const QString HTTPS_PROXY = u"https_proxy"_s;
+    // for `helpers.setupSOCKSProxy()`: https://everything.curl.dev/usingcurl/proxies/socks.html
+    const QString SOCKS_PROXY = u"qbt_socks_proxy"_s;
 
-    // Define environment variables for urllib in search engine plugins
+    if (!Preferences::instance()->useProxyForGeneralPurposes())
-    QString proxyStrHTTP, proxyStrSOCK;
-    if ((proxyConfig.type != Net::ProxyType::None) && Preferences::instance()->useProxyForGeneralPurposes())
     {
-        switch (proxyConfig.type)
+        m_proxyEnv.remove(HTTP_PROXY);
-        {
+        m_proxyEnv.remove(HTTPS_PROXY);
-        case Net::ProxyType::HTTP:
+        m_proxyEnv.remove(SOCKS_PROXY);
-            if (proxyConfig.authEnabled)
+        return;
-            {
-                proxyStrHTTP = u"http://%1:%2@%3:%4"_s.arg(proxyConfig.username
-                        , proxyConfig.password, proxyConfig.ip, QString::number(proxyConfig.port));
-            }
-            else
-            {
-                proxyStrHTTP = u"http://%1:%2"_s.arg(proxyConfig.ip, QString::number(proxyConfig.port));
-            }
-            break;
-
-        case Net::ProxyType::SOCKS5:
-            if (proxyConfig.authEnabled)
-            {
-                proxyStrSOCK = u"%1:%2@%3:%4"_s.arg(proxyConfig.username
-                    , proxyConfig.password, proxyConfig.ip, QString::number(proxyConfig.port));
-            }
-            else
-            {
-                proxyStrSOCK = u"%1:%2"_s.arg(proxyConfig.ip, QString::number(proxyConfig.port));
-            }
-            break;
-
-        default:
-            qDebug("Disabling HTTP communications proxy");
-        }
-
-        qDebug("HTTP communications proxy string: %s"
-               , qUtf8Printable((proxyConfig.type == Net::ProxyType::SOCKS5) ? proxyStrSOCK : proxyStrHTTP));
     }
 
-    qputenv("http_proxy", proxyStrHTTP.toLocal8Bit());
+    const Net::ProxyConfiguration proxyConfig = Net::ProxyConfigurationManager::instance()->proxyConfiguration();
-    qputenv("https_proxy", proxyStrHTTP.toLocal8Bit());
+    switch (proxyConfig.type)
-    qputenv("sock_proxy", proxyStrSOCK.toLocal8Bit());
+    {
+    case Net::ProxyType::None:
+        m_proxyEnv.remove(HTTP_PROXY);
+        m_proxyEnv.remove(HTTPS_PROXY);
+        m_proxyEnv.remove(SOCKS_PROXY);
+        break;
+
+    case Net::ProxyType::HTTP:
+        {
+            const QString credential = proxyConfig.authEnabled
+                ? (proxyConfig.username + u':' + proxyConfig.password + u'@')
+                : QString();
+            const QString proxyURL = u"http://%1%2:%3"_s
+                .arg(credential, proxyConfig.ip, QString::number(proxyConfig.port));
+
+            m_proxyEnv.insert(HTTP_PROXY, proxyURL);
+            m_proxyEnv.insert(HTTPS_PROXY, proxyURL);
+            m_proxyEnv.remove(SOCKS_PROXY);
+        }
+        break;
+
+    case Net::ProxyType::SOCKS5:
+        {
+            const QString scheme = proxyConfig.hostnameLookupEnabled ? u"socks5h"_s : u"socks5"_s;
+            const QString credential = proxyConfig.authEnabled
+                ? (proxyConfig.username + u':' + proxyConfig.password + u'@')
+                : QString();
+            const QString proxyURL = u"%1://%2%3:%4"_s
+                .arg(scheme, credential, proxyConfig.ip, QString::number(proxyConfig.port));
+
+            m_proxyEnv.remove(HTTP_PROXY);
+            m_proxyEnv.remove(HTTPS_PROXY);
+            m_proxyEnv.insert(SOCKS_PROXY, proxyURL);
+        }
+        break;
+
+    case Net::ProxyType::SOCKS4:
+        {
+            const QString scheme = proxyConfig.hostnameLookupEnabled ? u"socks4a"_s : u"socks4"_s;
+            const QString proxyURL = u"%1://%2:%3"_s
+                .arg(scheme, proxyConfig.ip, QString::number(proxyConfig.port));
+
+            m_proxyEnv.remove(HTTP_PROXY);
+            m_proxyEnv.remove(HTTPS_PROXY);
+            m_proxyEnv.insert(SOCKS_PROXY, proxyURL);
+        }
+        break;
+    }
 }
 
 void SearchPluginManager::versionInfoDownloadFinished(const Net::DownloadResult &result)
@@ -469,9 +495,9 @@ void SearchPluginManager::pluginDownloadFinished(const Net::DownloadResult &resu
     }
     else
     {
-        const QString url = result.url;
+        const QString &url = result.url;
-        QString pluginName = url.mid(url.lastIndexOf(u'/') + 1);
+        const QString pluginName = url.sliced(url.lastIndexOf(u'/') + 1)
-        pluginName.replace(u".py"_s, u""_s, Qt::CaseInsensitive);
+            .replace(u".py"_s, u""_s, Qt::CaseInsensitive);
 
         if (pluginInfo(pluginName))
             emit pluginUpdateFailed(pluginName, tr("Failed to download the plugin file. %1").arg(result.errorString));
@@ -487,39 +513,42 @@ void SearchPluginManager::updateNova()
     const Path enginePath = engineLocation();
 
     QFile packageFile {(enginePath / Path(u"__init__.py"_s)).data()};
-    packageFile.open(QIODevice::WriteOnly);
+    if (packageFile.open(QIODevice::WriteOnly))
-    packageFile.close();
+        packageFile.close();
 
     Utils::Fs::mkdir(enginePath / Path(u"engines"_s));
 
     QFile packageFile2 {(enginePath / Path(u"engines/__init__.py"_s)).data()};
-    packageFile2.open(QIODevice::WriteOnly);
+    if (packageFile2.open(QIODevice::WriteOnly))
-    packageFile2.close();
+        packageFile2.close();
 
     // Copy search plugin files (if necessary)
-    const auto updateFile = [&enginePath](const Path &filename, const bool compareVersion)
+    const auto updateFile = [&enginePath](const Path &filename)
     {
         const Path filePathBundled = Path(u":/searchengine/nova3"_s) / filename;
         const Path filePathDisk = enginePath / filename;
 
-        if (compareVersion && (getPluginVersion(filePathBundled) <= getPluginVersion(filePathDisk)))
+        if (getPluginVersion(filePathBundled) <= getPluginVersion(filePathDisk))
             return;
 
         Utils::Fs::removeFile(filePathDisk);
         Utils::Fs::copyFile(filePathBundled, filePathDisk);
     };
 
-    updateFile(Path(u"helpers.py"_s), true);
+    updateFile(Path(u"helpers.py"_s));
-    updateFile(Path(u"nova2.py"_s), true);
+    updateFile(Path(u"nova2.py"_s));
-    updateFile(Path(u"nova2dl.py"_s), true);
+    updateFile(Path(u"nova2dl.py"_s));
-    updateFile(Path(u"novaprinter.py"_s), true);
+    updateFile(Path(u"novaprinter.py"_s));
-    updateFile(Path(u"socks.py"_s), false);
+    updateFile(Path(u"socks.py"_s));
 }
 
 void SearchPluginManager::update()
 {
     QProcess nova;
-    nova.setProcessEnvironment(QProcessEnvironment::systemEnvironment());
+    nova.setProcessEnvironment(proxyEnvironment());
+#ifdef Q_OS_UNIX
+    nova.setUnixProcessParameters(QProcess::UnixProcessFlag::CloseFileDescriptors);
+#endif
 
     const QStringList params
     {
@@ -527,7 +556,7 @@ void SearchPluginManager::update()
         (engineLocation() / Path(u"/nova2.py"_s)).toString(),
         u"--capabilities"_s
     };
-    nova.start(Utils::ForeignApps::pythonInfo().executableName, params, QIODevice::ReadOnly);
+    nova.start(Utils::ForeignApps::pythonInfo().executablePath.data(), params, QIODevice::ReadOnly);
     nova.waitForFinished();
 
     const auto capabilities = QString::fromUtf8(nova.readAllStandardOutput());
@@ -592,14 +621,14 @@ void SearchPluginManager::parseVersionInfo(const QByteArray &info)
     QHash<QString, PluginVersion> updateInfo;
     int numCorrectData = 0;
 
-    const QList<QByteArrayView> lines = Utils::ByteArray::splitToViews(info, "\n", Qt::SkipEmptyParts);
+    const QList<QByteArrayView> lines = Utils::ByteArray::splitToViews(info, "\n");
     for (QByteArrayView line : lines)
     {
         line = line.trimmed();
         if (line.isEmpty()) continue;
         if (line.startsWith('#')) continue;
 
-        const QList<QByteArrayView> list = Utils::ByteArray::splitToViews(line, ":", Qt::SkipEmptyParts);
+        const QList<QByteArrayView> list = Utils::ByteArray::splitToViews(line, ":");
         if (list.size() != 2) continue;
 
         const auto pluginName = QString::fromUtf8(list.first().trimmed());
@@ -651,9 +680,10 @@ PluginVersion SearchPluginManager::getPluginVersion(const Path &filePath)
     while (!pluginFile.atEnd())
     {
         const auto line = QString::fromUtf8(pluginFile.readLine(lineMaxLength)).remove(u' ');
-        if (!line.startsWith(u"#VERSION:", Qt::CaseInsensitive)) continue;
+        if (!line.startsWith(u"#VERSION:", Qt::CaseInsensitive))
+            continue;
 
-        const QString versionStr = line.mid(9);
+        const QString versionStr = line.sliced(9);
         const auto version = PluginVersion::fromString(versionStr);
         if (version.isValid())
             return version;