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--- librtmp/handshake.h.orig 2016-02-29 01:15:13 UTC
+++ librtmp/handshake.h
@@ -31,9 +31,13 @@
#define SHA256_DIGEST_LENGTH 32
#endif
#define HMAC_CTX sha2_context
-#define HMAC_setup(ctx, key, len) sha2_hmac_starts(&ctx, (unsigned char *)key, len, 0)
-#define HMAC_crunch(ctx, buf, len) sha2_hmac_update(&ctx, buf, len)
-#define HMAC_finish(ctx, dig, dlen) dlen = SHA256_DIGEST_LENGTH; sha2_hmac_finish(&ctx, dig)
+#define HMAC_setup(ctx, key, len) do { \
+ if (ctx == NULL) \
+ ctx = calloc(1, sizeof(*ctx)); \
+ sha2_hmac_starts(ctx, (unsigned char *)key, len, 0); \
+ } while (0)
+#define HMAC_crunch(ctx, buf, len) sha2_hmac_update(ctx, buf, len)
+#define HMAC_finish(ctx, dig, dlen) dlen = SHA256_DIGEST_LENGTH; sha2_hmac_finish(ctx, dig)
typedef arc4_context * RC4_handle;
#define RC4_alloc(h) *h = malloc(sizeof(arc4_context))
@@ -50,10 +54,17 @@ typedef arc4_context * RC4_handle;
#endif
#undef HMAC_CTX
#define HMAC_CTX struct hmac_sha256_ctx
-#define HMAC_setup(ctx, key, len) hmac_sha256_set_key(&ctx, len, key)
-#define HMAC_crunch(ctx, buf, len) hmac_sha256_update(&ctx, len, buf)
-#define HMAC_finish(ctx, dig, dlen) dlen = SHA256_DIGEST_LENGTH; hmac_sha256_digest(&ctx, SHA256_DIGEST_LENGTH, dig)
-#define HMAC_close(ctx)
+#define HMAC_setup(ctx, key, len) do { \
+ if (ctx == NULL) \
+ ctx = calloc(1, sizeof(*ctx)); \
+ hmac_sha256_set_key(ctx, len, key); \
+ } while (0)
+#define HMAC_crunch(ctx, buf, len) hmac_sha256_update(ctx, len, buf)
+#define HMAC_finish(ctx, dig, dlen) dlen = SHA256_DIGEST_LENGTH; hmac_sha256_digest(ctx, SHA256_DIGEST_LENGTH, dig)
+#define HMAC_close(ctx) do { \
+ free(ctx); \
+ ctx = NULL; \
+ } while (0)
typedef struct arcfour_ctx* RC4_handle;
#define RC4_alloc(h) *h = malloc(sizeof(struct arcfour_ctx))
@@ -69,9 +80,37 @@ typedef struct arcfour_ctx* RC4_handle;
#if OPENSSL_VERSION_NUMBER < 0x0090800 || !defined(SHA256_DIGEST_LENGTH)
#error Your OpenSSL is too old, need 0.9.8 or newer with SHA256
#endif
-#define HMAC_setup(ctx, key, len) HMAC_CTX_init(&ctx); HMAC_Init_ex(&ctx, key, len, EVP_sha256(), 0)
-#define HMAC_crunch(ctx, buf, len) HMAC_Update(&ctx, buf, len)
-#define HMAC_finish(ctx, dig, dlen) HMAC_Final(&ctx, dig, &dlen); HMAC_CTX_cleanup(&ctx)
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+#define HMAC_setup(ctx, key, len) do { \
+ if (ctx == NULL) \
+ ctx = calloc(1, sizeof(*ctx)); \
+ HMAC_CTX_init(ctx); \
+ HMAC_Init_ex(ctx, key, len, EVP_sha256(), 0); \
+ } while (0)
+#else
+#define HMAC_setup(ctx, key, len) do { \
+ if (ctx == NULL) \
+ ctx = HMAC_CTX_new(); \
+ else \
+ HMAC_CTX_reset(ctx); \
+ HMAC_Init_ex(ctx, key, len, EVP_sha256(), 0); \
+ } while (0)
+#endif
+#define HMAC_crunch(ctx, buf, len) HMAC_Update(ctx, buf, len)
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+#define HMAC_finish(ctx, dig, dlen) do { \
+ HMAC_Final(ctx, dig, &dlen); \
+ HMAC_CTX_cleanup(ctx); \
+ free(ctx); \
+ ctx = NULL; \
+ } while (0)
+#else
+#define HMAC_finish(ctx, dig, dlen) do { \
+ HMAC_Final(ctx, dig, &dlen); \
+ HMAC_CTX_free(ctx); \
+ ctx = NULL; \
+ } while (0)
+#endif
typedef RC4_KEY * RC4_handle;
#define RC4_alloc(h) *h = malloc(sizeof(RC4_KEY))
@@ -117,7 +156,7 @@ static void InitRC4Encryption
{
uint8_t digest[SHA256_DIGEST_LENGTH];
unsigned int digestLen = 0;
- HMAC_CTX ctx;
+ HMAC_CTX *ctx = NULL;
RC4_alloc(rc4keyIn);
RC4_alloc(rc4keyOut);
@@ -266,7 +305,7 @@ HMACsha256(const uint8_t *message, size_
size_t keylen, uint8_t *digest)
{
unsigned int digestLen;
- HMAC_CTX ctx;
+ HMAC_CTX *ctx = NULL;
HMAC_setup(ctx, key, keylen);
HMAC_crunch(ctx, message, messageLen);
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