From b6fb57f94f859e748ee26fcccca9535dedf6dc88 Mon Sep 17 00:00:00 2001
From: Jeffery To <jeffery.to@gmail.com>
Date: Mon, 27 May 2019 03:09:25 +0800
Subject: [PATCH] * usr/bin/byobu-disable-prompt.in,  
 usr/bin/byobu-janitor.in:   - Test if $HOME/.bashrc exists before modifying
 it (and potentially     creating it)

---
 debian/changelog                | 4 ++++
 usr/bin/byobu-disable-prompt.in | 2 ++
 usr/bin/byobu-janitor.in        | 3 ++-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/debian/changelog b/debian/changelog
index a78a8b15..3daff1c8 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -20,6 +20,10 @@ byobu (5.128) unreleased; urgency=medium
     - https://github.com/dustinkirkland/byobu/pull/30
 
   [ Jeffery To ]
+  * usr/bin/byobu-disable-prompt.in,
+    usr/bin/byobu-janitor.in:
+    - Test if $HOME/.bashrc exists before modifying it (and potentially
+      creating it)
   * usr/lib/byobu/logo:
     - Add logo for OpenWrt
 
diff --git a/usr/bin/byobu-disable-prompt.in b/usr/bin/byobu-disable-prompt.in
index 59b5e0e7..2e3946db 100755
--- a/usr/bin/byobu-disable-prompt.in
+++ b/usr/bin/byobu-disable-prompt.in
@@ -22,6 +22,8 @@ PKG="byobu"
 [ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="@prefix@" || export BYOBU_PREFIX
 . "${BYOBU_PREFIX}/lib/${PKG}/include/common"
 
+[ -w "$HOME/.bashrc" ] || exit 1
+
 $BYOBU_SED_INLINE -e "/#byobu-prompt#$/d" "$HOME/.bashrc"
 
 if [ "$1" != "--no-reload" ]; then
diff --git a/usr/bin/byobu-janitor.in b/usr/bin/byobu-janitor.in
index 38ddebe8..071b82ca 100755
--- a/usr/bin/byobu-janitor.in
+++ b/usr/bin/byobu-janitor.in
@@ -112,7 +112,8 @@ killall -u $USER byobu-statusd >/dev/null 2>&1 || true
 rm -f "$FLAG" "/var/run/screen/S-$USER/$PKG.reload-required"
 
 # Affects: Upgrades from <= byobu 5.50, install byobu prompt if using stock bashrc
-if ! (grep -qs "#byobu-prompt#$" "$HOME/.bashrc") && ! [ -e "$BYOBU_CONFIG_DIR/prompt" ]; then
+if [ -r /etc/skel/.bashrc ] && [ -r "$HOME/.bashrc" ] && [ -w "$HOME/.bashrc" ] && \
+		! (grep -qs "#byobu-prompt#$" "$HOME/.bashrc") && ! [ -e "$BYOBU_CONFIG_DIR/prompt" ]; then
 	if eval $BYOBU_TEST diff >/dev/null 2>&1; then
 		if  diff /etc/skel/.bashrc "$HOME/.bashrc" >/dev/null 2>&1; then
 			printf "[ -r $BYOBU_CONFIG_DIR/prompt ] && . $BYOBU_CONFIG_DIR/prompt   #byobu-prompt#\n" >> "$HOME/.bashrc"