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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2020-07-24 19:39:26 +0200
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2020-07-24 19:42:48 +0200
commit948a871c7348a4cfd9caa1e797d17e503c095a63 (patch)
tree4128f74f0664a4a05c677acd60e3bef7061e4284 /src/Common/libzip/zip_source_pkware.c
parent5cf7d946d2e1d68065c772c9e76ba7dad52e96f9 (diff)
downloadVeraCrypt-948a871c7348a4cfd9caa1e797d17e503c095a63.tar.gz
VeraCrypt-948a871c7348a4cfd9caa1e797d17e503c095a63.zip
Windows: update libzip to latest version 1.7.3 (close issue #656)
Diffstat (limited to 'src/Common/libzip/zip_source_pkware.c')
-rw-r--r--src/Common/libzip/zip_source_pkware.c215
1 files changed, 0 insertions, 215 deletions
diff --git a/src/Common/libzip/zip_source_pkware.c b/src/Common/libzip/zip_source_pkware.c
deleted file mode 100644
index 1b59d7a7..00000000
--- a/src/Common/libzip/zip_source_pkware.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- zip_source_pkware.c -- Traditional PKWARE de/encryption routines
- Copyright (C) 2009-2019 Dieter Baron and Thomas Klausner
-
- This file is part of libzip, a library to manipulate ZIP archives.
- The authors can be contacted at <libzip@nih.at>
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in
- the documentation and/or other materials provided with the
- distribution.
- 3. The names of the authors may not be used to endorse or promote
- products derived from this software without specific prior
- written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
- OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
- DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "zipint.h"
-
-struct trad_pkware {
- zip_error_t error;
- zip_uint32_t key[3];
-};
-
-#define HEADERLEN 12
-#define KEY0 305419896
-#define KEY1 591751049
-#define KEY2 878082192
-
-
-static void decrypt(struct trad_pkware *, zip_uint8_t *, const zip_uint8_t *, zip_uint64_t, int);
-static int decrypt_header(zip_source_t *, struct trad_pkware *);
-static zip_int64_t pkware_decrypt(zip_source_t *, void *, void *, zip_uint64_t, zip_source_cmd_t);
-static void pkware_free(struct trad_pkware *);
-
-
-zip_source_t *
-zip_source_pkware(zip_t *za, zip_source_t *src, zip_uint16_t em, int flags, const char *password) {
- struct trad_pkware *ctx;
- zip_source_t *s2;
-
- if (password == NULL || src == NULL || em != ZIP_EM_TRAD_PKWARE) {
- zip_error_set(&za->error, ZIP_ER_INVAL, 0);
- return NULL;
- }
- if (flags & ZIP_CODEC_ENCODE) {
- zip_error_set(&za->error, ZIP_ER_ENCRNOTSUPP, 0);
- return NULL;
- }
-
- if ((ctx = (struct trad_pkware *)malloc(sizeof(*ctx))) == NULL) {
- zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
- return NULL;
- }
-
- zip_error_init(&ctx->error);
-
- ctx->key[0] = KEY0;
- ctx->key[1] = KEY1;
- ctx->key[2] = KEY2;
- decrypt(ctx, NULL, (const zip_uint8_t *)password, strlen(password), 1);
-
- if ((s2 = zip_source_layered(za, src, pkware_decrypt, ctx)) == NULL) {
- pkware_free(ctx);
- return NULL;
- }
-
- return s2;
-}
-
-
-static void
-decrypt(struct trad_pkware *ctx, zip_uint8_t *out, const zip_uint8_t *in, zip_uint64_t len, int update_only) {
- zip_uint16_t tmp;
- zip_uint64_t i;
- Bytef b;
-
- for (i = 0; i < len; i++) {
- b = in[i];
-
- if (!update_only) {
- /* decrypt next byte */
- tmp = (zip_uint16_t)(ctx->key[2] | 2);
- tmp = (zip_uint16_t)(((zip_uint32_t)tmp * (tmp ^ 1)) >> 8);
- b ^= (Bytef)tmp;
- }
-
- /* store cleartext */
- if (out)
- out[i] = b;
-
- /* update keys */
- ctx->key[0] = (zip_uint32_t)crc32(ctx->key[0] ^ 0xffffffffUL, &b, 1) ^ 0xffffffffUL;
- ctx->key[1] = (ctx->key[1] + (ctx->key[0] & 0xff)) * 134775813 + 1;
- b = (Bytef)(ctx->key[1] >> 24);
- ctx->key[2] = (zip_uint32_t)crc32(ctx->key[2] ^ 0xffffffffUL, &b, 1) ^ 0xffffffffUL;
- }
-}
-
-
-static int
-decrypt_header(zip_source_t *src, struct trad_pkware *ctx) {
- zip_uint8_t header[HEADERLEN];
- struct zip_stat st;
- zip_int64_t n;
- unsigned short dostime, dosdate;
-
- if ((n = zip_source_read(src, header, HEADERLEN)) < 0) {
- _zip_error_set_from_source(&ctx->error, src);
- return -1;
- }
-
- if (n != HEADERLEN) {
- zip_error_set(&ctx->error, ZIP_ER_EOF, 0);
- return -1;
- }
-
- decrypt(ctx, header, header, HEADERLEN, 0);
-
- if (zip_source_stat(src, &st) < 0) {
- /* stat failed, skip password validation */
- return 0;
- }
-
- _zip_u2d_time(st.mtime, &dostime, &dosdate);
-
- if (header[HEADERLEN - 1] != st.crc >> 24 && header[HEADERLEN - 1] != dostime >> 8) {
- zip_error_set(&ctx->error, ZIP_ER_WRONGPASSWD, 0);
- return -1;
- }
-
- return 0;
-}
-
-
-static zip_int64_t
-pkware_decrypt(zip_source_t *src, void *ud, void *data, zip_uint64_t len, zip_source_cmd_t cmd) {
- struct trad_pkware *ctx;
- zip_int64_t n;
-
- ctx = (struct trad_pkware *)ud;
-
- switch (cmd) {
- case ZIP_SOURCE_OPEN:
- if (decrypt_header(src, ctx) < 0)
- return -1;
- return 0;
-
- case ZIP_SOURCE_READ:
- if ((n = zip_source_read(src, data, len)) < 0) {
- _zip_error_set_from_source(&ctx->error, src);
- return -1;
- }
-
- decrypt((struct trad_pkware *)ud, (zip_uint8_t *)data, (zip_uint8_t *)data, (zip_uint64_t)n, 0);
- return n;
-
- case ZIP_SOURCE_CLOSE:
- return 0;
-
- case ZIP_SOURCE_STAT: {
- zip_stat_t *st;
-
- st = (zip_stat_t *)data;
-
- st->encryption_method = ZIP_EM_NONE;
- st->valid |= ZIP_STAT_ENCRYPTION_METHOD;
- /* TODO: deduce HEADERLEN from size for uncompressed */
- if (st->valid & ZIP_STAT_COMP_SIZE)
- st->comp_size -= HEADERLEN;
-
- return 0;
- }
-
- case ZIP_SOURCE_SUPPORTS:
- return zip_source_make_command_bitmap(ZIP_SOURCE_OPEN, ZIP_SOURCE_READ, ZIP_SOURCE_CLOSE, ZIP_SOURCE_STAT, ZIP_SOURCE_ERROR, ZIP_SOURCE_FREE, -1);
-
- case ZIP_SOURCE_ERROR:
- return zip_error_to_data(&ctx->error, data, len);
-
- case ZIP_SOURCE_FREE:
- pkware_free(ctx);
- return 0;
-
- default:
- zip_error_set(&ctx->error, ZIP_ER_INVAL, 0);
- return -1;
- }
-}
-
-
-static void
-pkware_free(struct trad_pkware *ctx) {
- free(ctx);
-}