pidgin/pidgin

Make sure we remove all the files we install.
release-2.x.y
2021-04-11, Gary Kramlich
5407cbf3c5dd
Make sure we remove all the files we install.

Patch was provided by Johann Lochner.

Testing Done:
Build and ran the installer and uninstaller and verified that `C:\Program Files (x86)\Pidgin` was empty and therefore removed.

Bugs closed: PIDGIN-17515

Reviewed at https://reviews.imfreedom.org/r/612/
/*
* purple
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <cipher.h>
#if !GLIB_CHECK_VERSION(2,16,0)
#define SHA256_HMAC_BLOCK_SIZE 64
#define SHA256_ROTR(X,n) ((((X) >> (n)) | ((X) << (32-(n)))) & 0xFFFFFFFF)
static const guint32 sha256_K[64] =
{
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
};
struct SHA256Context {
guint32 H[8];
guint32 W[64];
gint lenW;
guint32 sizeHi;
guint32 sizeLo;
};
static size_t
sha256_get_block_size(PurpleCipherContext *context)
{
/* This does not change (in this case) */
return SHA256_HMAC_BLOCK_SIZE;
}
static void
sha256_hash_block(struct SHA256Context *sha256_ctx) {
gint i;
guint32 A, B, C, D, E, F, G, H, T1, T2;
for(i = 16; i < 64; i++) {
sha256_ctx->W[i] =
(SHA256_ROTR(sha256_ctx->W[i-2], 17) ^ SHA256_ROTR(sha256_ctx->W[i-2], 19) ^ (sha256_ctx->W[i-2] >> 10))
+ sha256_ctx->W[i-7]
+ (SHA256_ROTR(sha256_ctx->W[i-15], 7) ^ SHA256_ROTR(sha256_ctx->W[i-15], 18) ^ (sha256_ctx->W[i-15] >> 3))
+ sha256_ctx->W[i-16];
}
A = sha256_ctx->H[0];
B = sha256_ctx->H[1];
C = sha256_ctx->H[2];
D = sha256_ctx->H[3];
E = sha256_ctx->H[4];
F = sha256_ctx->H[5];
G = sha256_ctx->H[6];
H = sha256_ctx->H[7];
for(i = 0; i < 64; i++) {
T1 = H
+ (SHA256_ROTR(E, 6) ^ SHA256_ROTR(E, 11) ^ SHA256_ROTR(E, 25))
+ ((E & F) ^ ((~E) & G))
+ sha256_K[i] + sha256_ctx->W[i];
T2 = (SHA256_ROTR(A, 2) ^ SHA256_ROTR(A, 13) ^ SHA256_ROTR(A, 22))
+ ((A & B) ^ (A & C) ^ (B & C));
H = G;
G = F;
F = E;
E = D + T1;
D = C;
C = B;
B = A;
A = T1 + T2;
}
sha256_ctx->H[0] += A;
sha256_ctx->H[1] += B;
sha256_ctx->H[2] += C;
sha256_ctx->H[3] += D;
sha256_ctx->H[4] += E;
sha256_ctx->H[5] += F;
sha256_ctx->H[6] += G;
sha256_ctx->H[7] += H;
}
static void
sha256_set_opt(PurpleCipherContext *context, const gchar *name, void *value) {
struct SHA256Context *ctx;
ctx = purple_cipher_context_get_data(context);
if(purple_strequal(name, "sizeHi")) {
ctx->sizeHi = GPOINTER_TO_INT(value);
} else if(purple_strequal(name, "sizeLo")) {
ctx->sizeLo = GPOINTER_TO_INT(value);
} else if(purple_strequal(name, "lenW")) {
ctx->lenW = GPOINTER_TO_INT(value);
}
}
static void *
sha256_get_opt(PurpleCipherContext *context, const gchar *name) {
struct SHA256Context *ctx;
ctx = purple_cipher_context_get_data(context);
if(purple_strequal(name, "sizeHi")) {
return GINT_TO_POINTER(ctx->sizeHi);
} else if(purple_strequal(name, "sizeLo")) {
return GINT_TO_POINTER(ctx->sizeLo);
} else if(purple_strequal(name, "lenW")) {
return GINT_TO_POINTER(ctx->lenW);
}
return NULL;
}
static void
sha256_init(PurpleCipherContext *context, void *extra) {
struct SHA256Context *sha256_ctx;
sha256_ctx = g_new0(struct SHA256Context, 1);
purple_cipher_context_set_data(context, sha256_ctx);
purple_cipher_context_reset(context, extra);
}
static void
sha256_reset(PurpleCipherContext *context, void *extra) {
struct SHA256Context *sha256_ctx;
gint i;
sha256_ctx = purple_cipher_context_get_data(context);
g_return_if_fail(sha256_ctx);
sha256_ctx->lenW = 0;
sha256_ctx->sizeHi = 0;
sha256_ctx->sizeLo = 0;
sha256_ctx->H[0] = 0x6a09e667;
sha256_ctx->H[1] = 0xbb67ae85;
sha256_ctx->H[2] = 0x3c6ef372;
sha256_ctx->H[3] = 0xa54ff53a;
sha256_ctx->H[4] = 0x510e527f;
sha256_ctx->H[5] = 0x9b05688c;
sha256_ctx->H[6] = 0x1f83d9ab;
sha256_ctx->H[7] = 0x5be0cd19;
for(i = 0; i < 64; i++)
sha256_ctx->W[i] = 0;
}
static void
sha256_uninit(PurpleCipherContext *context) {
struct SHA256Context *sha256_ctx;
purple_cipher_context_reset(context, NULL);
sha256_ctx = purple_cipher_context_get_data(context);
memset(sha256_ctx, 0, sizeof(struct SHA256Context));
g_free(sha256_ctx);
sha256_ctx = NULL;
}
static void
sha256_append(PurpleCipherContext *context, const guchar *data, size_t len) {
struct SHA256Context *sha256_ctx;
gint i;
sha256_ctx = purple_cipher_context_get_data(context);
g_return_if_fail(sha256_ctx);
for(i = 0; i < len; i++) {
sha256_ctx->W[sha256_ctx->lenW / 4] <<= 8;
sha256_ctx->W[sha256_ctx->lenW / 4] |= data[i];
if((++sha256_ctx->lenW) % 64 == 0) {
sha256_hash_block(sha256_ctx);
sha256_ctx->lenW = 0;
}
sha256_ctx->sizeLo += 8;
sha256_ctx->sizeHi += (sha256_ctx->sizeLo < 8);
}
}
static gboolean
sha256_digest(PurpleCipherContext *context, size_t in_len, guchar digest[32],
size_t *out_len)
{
struct SHA256Context *sha256_ctx;
guchar pad0x80 = 0x80, pad0x00 = 0x00;
guchar padlen[8];
gint i;
g_return_val_if_fail(in_len >= 32, FALSE);
sha256_ctx = purple_cipher_context_get_data(context);
g_return_val_if_fail(sha256_ctx, FALSE);
padlen[0] = (guchar)((sha256_ctx->sizeHi >> 24) & 255);
padlen[1] = (guchar)((sha256_ctx->sizeHi >> 16) & 255);
padlen[2] = (guchar)((sha256_ctx->sizeHi >> 8) & 255);
padlen[3] = (guchar)((sha256_ctx->sizeHi >> 0) & 255);
padlen[4] = (guchar)((sha256_ctx->sizeLo >> 24) & 255);
padlen[5] = (guchar)((sha256_ctx->sizeLo >> 16) & 255);
padlen[6] = (guchar)((sha256_ctx->sizeLo >> 8) & 255);
padlen[7] = (guchar)((sha256_ctx->sizeLo >> 0) & 255);
/* pad with a 1, then zeroes, then length */
purple_cipher_context_append(context, &pad0x80, 1);
while(sha256_ctx->lenW != 56)
purple_cipher_context_append(context, &pad0x00, 1);
purple_cipher_context_append(context, padlen, 8);
for(i = 0; i < 32; i++) {
digest[i] = (guchar)(sha256_ctx->H[i / 4] >> 24);
sha256_ctx->H[i / 4] <<= 8;
}
purple_cipher_context_reset(context, NULL);
if(out_len)
*out_len = 32;
return TRUE;
}
static PurpleCipherOps SHA256Ops = {
sha256_set_opt, /* Set Option */
sha256_get_opt, /* Get Option */
sha256_init, /* init */
sha256_reset, /* reset */
sha256_uninit, /* uninit */
NULL, /* set iv */
sha256_append, /* append */
sha256_digest, /* digest */
NULL, /* encrypt */
NULL, /* decrypt */
NULL, /* set salt */
NULL, /* get salt size */
NULL, /* set key */
NULL, /* get key size */
NULL, /* set batch mode */
NULL, /* get batch mode */
sha256_get_block_size, /* get block size */
NULL /* set key with len */
};
PurpleCipherOps *
purple_sha256_cipher_get_ops(void) {
return &SHA256Ops;
}
#endif /* !GLIB_CHECK_VERSION(2,16,0) */