summer restructuring:

* .h include only the strict minimum for their own parsing
  * this forces all files to include explicitment their needs and not count on far streched dependencies
  * this helps Makefile to rebuild only the minimum
  * according to this rule, most standalone .h are now gone
  * big app.h is gone
  * remove seldom __cplusplus, if c++ happens, everything will have to be done properly anyway
* all unrequired include were removed
* split common/ into common/ (client+arm) and common_arm/ (os+bootloader)
  * bring zlib to common/
  * bring stuff not really/not yet used in common back to armsrc/ or client/
  * bring liblua into client/
  * bring uart into client/
  * move some portions of code around (dbprint, protocols,...)
* rename unused files into *_disabled.[ch] to make it explicit
* rename soft Uarts between 14a, 14b and iclass, so a standalone could use several without clash
* remove PrintAndLogDevice
* move deprecated-hid-flasher from client to tools
* Makefiles
  * treat deps in armsrc/ as in client/
  * client: stop on warning (-Werror), same as for armsrc/

Tested on:

* all standalone modes
* Linux

client/tea.c

@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------------
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Generic TEA crypto code.
+// ref: http://143.53.36.235:8080/source.htm#ansi
+//-----------------------------------------------------------------------------
+#include "tea.h"
+
+#include "commonutil.h" // bytes_to_num etc
+
+#define ROUNDS 32
+#define DELTA  0x9E3779B9
+#define SUM    0xC6EF3720
+
+void tea_encrypt(uint8_t *v, uint8_t *key) {
+
+    uint32_t a = 0, b = 0, c = 0, d = 0, y = 0, z = 0;
+    uint32_t sum = 0;
+    uint8_t n = ROUNDS;
+
+    //key
+    a = bytes_to_num(key, 4);
+    b = bytes_to_num(key + 4, 4);
+    c = bytes_to_num(key + 8, 4);
+    d = bytes_to_num(key + 12, 4);
+
+    //input
+    y = bytes_to_num(v, 4);
+    z = bytes_to_num(v + 4, 4);
+
+    while (n-- > 0) {
+        sum += DELTA;
+        y += ((z << 4) + a) ^ (z + sum) ^ ((z >> 5) + b);
+        z += ((y << 4) + c) ^ (y + sum) ^ ((y >> 5) + d);
+    }
+
+    num_to_bytes(y, 4, v);
+    num_to_bytes(z, 4, v + 4);
+}
+
+void tea_decrypt(uint8_t *v, uint8_t *key) {
+
+    uint32_t a = 0, b = 0, c = 0, d = 0, y = 0, z = 0;
+    uint32_t sum = SUM;
+    uint8_t n = ROUNDS;
+
+    //key
+    a = bytes_to_num(key, 4);
+    b = bytes_to_num(key + 4, 4);
+    c = bytes_to_num(key + 8, 4);
+    d = bytes_to_num(key + 12, 4);
+
+    //input
+    y = bytes_to_num(v, 4);
+    z = bytes_to_num(v + 4, 4);
+
+    /* sum = delta<<5, in general sum = delta * n */
+    while (n-- > 0) {
+        z -= ((y << 4) + c) ^ (y + sum) ^ ((y >> 5) + d);
+        y -= ((z << 4) + a) ^ (z + sum) ^ ((z >> 5) + b);
+        sum -= DELTA;
+    }
+    num_to_bytes(y, 4, v);
+    num_to_bytes(z, 4, v + 4);
+}