Merge commit '29abb04e73b0580ebe38703cadb988d26df6a76a'

* commit '29abb04e73b0580ebe38703cadb988d26df6a76a':
  libspeexdec: If the channel count is not valid, decode as stereo.
  libspeexdec: improve setting of Speex mode and sample rate
  libspeex: Add a private option for enabling VAD
  xtea: Test inplace decryption
  xtea: Fix CBC decryption when src==dst
  xtea: Factorize testing into a separate function
  configure: Refactor HAVE_ options available on the command line
  avconv/avprobe: Add missing 'void' to exit_program() definition
  Allow use of strncpy()
  blowfish: Add more tests
  blowfish: Fix CBC decryption with dst==src
  blowfish: Factorize testing into a separate function

Conflicts:
	configure
	libavcodec/libspeexdec.c
	libavutil/xtea.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 46 insertions, 17 deletions

diff --git a/libavutil/blowfish.c b/libavutil/blowfish.c
index 5fe95e8d8a..cdc2952dea 100644
--- a/libavutil/blowfish.c
+++ b/libavutil/blowfish.c
@@ -380,15 +380,15 @@ void av_blowfish_crypt(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
 
             av_blowfish_crypt_ecb(ctx, &v0, &v1, decrypt);
 
-            AV_WB32(dst, v0);
-            AV_WB32(dst + 4, v1);
-
             if (iv) {
-                for (i = 0; i < 8; i++)
-                    dst[i] = dst[i] ^ iv[i];
+                v0 ^= AV_RB32(iv);
+                v1 ^= AV_RB32(iv + 4);
                 memcpy(iv, src, 8);
             }
 
+            AV_WB32(dst, v0);
+            AV_WB32(dst + 4, v1);
+
             src   += 8;
             dst   += 8;
         }
@@ -509,32 +509,61 @@ static const uint32_t ciphertext_r[NUM_VARIABLE_KEY_TESTS] = {
 /* plaintext bytes */
 static const uint8_t plaintext[8] = "BLOWFISH";
 
+static const uint8_t plaintext2[16] = "BLOWFISHBLOWFISH";
+
 /* ciphertext bytes */
 static const uint8_t ciphertext[8] = {
     0x32, 0x4E, 0xD0, 0xFE, 0xF4, 0x13, 0xA2, 0x03
 };
 
+static const uint8_t ciphertext2[16] = {
+    0x53, 0x00, 0x40, 0x06, 0x63, 0xf2, 0x1d, 0x99,
+    0x3b, 0x9b, 0x27, 0x64, 0x46, 0xfd, 0x20, 0xc1,
+};
+
+#define IV "blowfish"
+
+#undef exit
+static void test_blowfish(AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
+                          const uint8_t *ref, int len, uint8_t *iv, int dir,
+                          const char *test)
+{
+    av_blowfish_crypt(ctx, dst, src, len, iv, dir);
+    if (memcmp(dst, ref, 8*len)) {
+        int i;
+        printf("%s failed\ngot      ", test);
+        for (i = 0; i < 8*len; i++)
+            printf("%02x ", dst[i]);
+        printf("\nexpected ");
+        for (i = 0; i < 8*len; i++)
+            printf("%02x ", ref[i]);
+        printf("\n");
+        exit(1);
+    }
+}
+
 int main(void)
 {
     AVBlowfish ctx;
     uint32_t tmptext_l[NUM_VARIABLE_KEY_TESTS];
     uint32_t tmptext_r[NUM_VARIABLE_KEY_TESTS];
-    uint8_t tmp[8];
+    uint8_t tmp[16], iv[8];
     int i;
 
     av_blowfish_init(&ctx, "abcdefghijklmnopqrstuvwxyz", 26);
 
-    av_blowfish_crypt(&ctx, tmp, plaintext, 1, NULL, 0);
-    if (memcmp(tmp, ciphertext, 8)) {
-        printf("Test encryption failed.\n");
-        return 1;
-    }
-
-    av_blowfish_crypt(&ctx, tmp, ciphertext, 1, NULL, 1);
-    if (memcmp(tmp, plaintext, 8)) {
-        printf("Test decryption failed.\n");
-        return 1;
-    }
+    test_blowfish(&ctx, tmp, plaintext, ciphertext, 1, NULL, 0, "encryption");
+    test_blowfish(&ctx, tmp, ciphertext, plaintext, 1, NULL, 1, "decryption");
+    test_blowfish(&ctx, tmp, tmp, ciphertext, 1, NULL, 0, "Inplace encryption");
+    test_blowfish(&ctx, tmp, tmp, plaintext,  1, NULL, 1, "Inplace decryption");
+    memcpy(iv, IV, 8);
+    test_blowfish(&ctx, tmp, plaintext2, ciphertext2, 2, iv, 0, "CBC encryption");
+    memcpy(iv, IV, 8);
+    test_blowfish(&ctx, tmp, ciphertext2, plaintext2, 2, iv, 1, "CBC decryption");
+    memcpy(iv, IV, 8);
+    test_blowfish(&ctx, tmp, tmp, ciphertext2, 2, iv, 0, "Inplace CBC encryption");
+    memcpy(iv, IV, 8);
+    test_blowfish(&ctx, tmp, tmp, plaintext2,  2, iv, 1, "Inplace CBC decryption");
 
     memcpy(tmptext_l, plaintext_l, sizeof(*plaintext_l) * NUM_VARIABLE_KEY_TESTS);
     memcpy(tmptext_r, plaintext_r, sizeof(*plaintext_r) * NUM_VARIABLE_KEY_TESTS);