void FFMS_Index::CalculateFileSignature(const char *Filename, int64_t *Filesize, uint8_t Digest[20]) {
FileHandle file(Filename, "rb", FFMS_ERROR_INDEX, FFMS_ERROR_FILE_READ);
#if VERSION_CHECK(LIBAVUTIL_VERSION_INT, >=, 51, 43, 0, 51, 75, 100)
unknown_size<AVSHA, av_sha_alloc, ffms_free_sha> ctx;
#else
std::vector<uint8_t> ctxmem(av_sha_size);
AVSHA *ctx = (AVSHA*)(&ctxmem[0]);
#endif
av_sha_init(ctx, 160);
try {
file.Seek(0, SEEK_END);
*Filesize = file.Tell();
file.Seek(0, SEEK_SET);
std::vector<char> FileBuffer(static_cast<size_t>(std::min<int64_t>(1024*1024, *Filesize)));
size_t BytesRead = file.Read(&FileBuffer[0], FileBuffer.size());
av_sha_update(ctx, reinterpret_cast<const uint8_t*>(&FileBuffer[0]), BytesRead);
if (*Filesize > static_cast<int64_t>(FileBuffer.size())) {
file.Seek(-(int)FileBuffer.size(), SEEK_END);
BytesRead = file.Read(&FileBuffer[0], FileBuffer.size());
av_sha_update(ctx, reinterpret_cast<const uint8_t*>(&FileBuffer[0]), BytesRead);
}
}
catch (...) {
av_sha_final(ctx, Digest);
throw;
}
av_sha_final(ctx, Digest);
}
static void
digest_key(const char *key, const char *stash, uint8_t *d)
{
struct AVSHA *shactx = alloca(av_sha_size);
av_sha_init(shactx, 160);
av_sha_update(shactx, (const uint8_t *)key, strlen(key));
av_sha_update(shactx, (const uint8_t *)stash, strlen(stash));
av_sha_final(shactx, d);
}
int main(void)
{
int i, j, k;
AVSHA ctx;
unsigned char digest[32];
const int lengths[3] = { 160, 224, 256 };
for (j = 0; j < 3; j++) {
printf("Testing SHA-%d\n", lengths[j]);
for (k = 0; k < 3; k++) {
av_sha_init(&ctx, lengths[j]);
if (k == 0)
av_sha_update(&ctx, "abc", 3);
else if (k == 1)
av_sha_update(&ctx, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56);
else
for (i = 0; i < 1000*1000; i++)
av_sha_update(&ctx, "a", 1);
av_sha_final(&ctx, digest);
for (i = 0; i < lengths[j] >> 3; i++)
printf("%02X", digest[i]);
putchar('\n');
}
switch (j) {
case 0:
//test vectors (from FIPS PUB 180-1)
printf("A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D\n"
"84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1\n"
"34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F\n");
break;
case 1:
//test vectors (from FIPS PUB 180-2 Appendix A)
printf("23097d22 3405d822 8642a477 bda255b3 2aadbce4 bda0b3f7 e36c9da7\n"
"75388b16 512776cc 5dba5da1 fd890150 b0c6455c b4f58b19 52522525\n"
"20794655 980c91d8 bbb4c1ea 97618a4b f03f4258 1948b2ee 4ee7ad67\n");
break;
case 2:
//test vectors (from FIPS PUB 180-2)
printf("ba7816bf 8f01cfea 414140de 5dae2223 b00361a3 96177a9c b410ff61 f20015ad\n"
"248d6a61 d20638b8 e5c02693 0c3e6039 a33ce459 64ff2167 f6ecedd4 19db06c1\n"
"cdc76e5c 9914fb92 81a1c7e2 84d73e67 f1809a48 a497200e 046d39cc c7112cd0\n");
break;
}
}
return 0;
}
static uint32_t get_generic_seed(void)
{
uint8_t tmp[120];
struct AVSHA *sha = (void*)tmp;
clock_t last_t = 0;
static uint64_t i = 0;
static uint32_t buffer[512] = { 0 };
unsigned char digest[20];
uint64_t last_i = i;
av_assert0(sizeof(tmp) >= av_sha_size);
if(TEST){
memset(buffer, 0, sizeof(buffer));
last_i = i = 0;
}else{
#ifdef AV_READ_TIME
buffer[13] ^= AV_READ_TIME();
buffer[41] ^= AV_READ_TIME()>>32;
#endif
}
for (;;) {
clock_t t = clock();
if (last_t == t) {
buffer[i & 511]++;
} else {
buffer[++i & 511] += (t - last_t) % 3294638521U;
if (last_i && i - last_i > 4 || i - last_i > 64 || TEST && i - last_i > 8)
break;
}
last_t = t;
}
if(TEST) {
buffer[0] = buffer[1] = 0;
} else {
#ifdef AV_READ_TIME
buffer[111] += AV_READ_TIME();
#endif
}
av_sha_init(sha, 160);
av_sha_update(sha, (const uint8_t *)buffer, sizeof(buffer));
av_sha_final(sha, digest);
return AV_RB32(digest) + AV_RB32(digest + 16);
}
static htsmsg_t *
htsp_reqreply(htsp_connection_t *hc, htsmsg_t *m)
{
void *buf;
size_t len;
uint32_t seq;
int r;
tcpcon_t *tc = hc->hc_tc;
uint32_t noaccess;
htsmsg_t *reply;
htsp_msg_t *hm = NULL;
int retry = 0;
char id[100];
char *username;
char *password;
struct AVSHA *shactx = alloca(av_sha_size);
uint8_t d[20];
if(tc == NULL)
return NULL;
/* Generate a sequence number for our message */
seq = atomic_add(&hc->hc_seq_generator, 1);
htsmsg_add_u32(m, "seq", seq);
again:
snprintf(id, sizeof(id), "htsp://%s:%d", hc->hc_hostname, hc->hc_port);
r = keyring_lookup(id, &username, &password, NULL, NULL,
"TV client", "Access denied",
(retry ? KEYRING_QUERY_USER : 0) |
KEYRING_SHOW_REMEMBER_ME | KEYRING_REMEMBER_ME_SET);
if(r == -1) {
/* User rejected */
return NULL;
}
if(r == 0) {
/* Got auth credentials */
htsmsg_delete_field(m, "username");
htsmsg_delete_field(m, "digest");
if(username != NULL)
htsmsg_add_str(m, "username", username);
if(password != NULL) {
av_sha_init(shactx, 160);
av_sha_update(shactx, (const uint8_t *)password, strlen(password));
av_sha_update(shactx, hc->hc_challenge, 32);
av_sha_final(shactx, d);
htsmsg_add_bin(m, "digest", d, 20);
}
free(username);
free(password);
}
if(htsmsg_binary_serialize(m, &buf, &len, -1) < 0) {
htsmsg_destroy(m);
return NULL;
}
if(hc->hc_is_async) {
/* Async, set up a struct that will be signalled when we get a reply */
hm = malloc(sizeof(htsp_msg_t));
hm->hm_msg = NULL;
hm->hm_seq = seq;
hm->hm_error = 0;
hts_mutex_lock(&hc->hc_rpc_mutex);
TAILQ_INSERT_TAIL(&hc->hc_rpc_queue, hm, hm_link);
hts_mutex_unlock(&hc->hc_rpc_mutex);
}
if(tc->write(tc, buf, len)) {
free(buf);
htsmsg_destroy(m);
if(hm != NULL) {
hts_mutex_lock(&hc->hc_rpc_mutex);
TAILQ_REMOVE(&hc->hc_rpc_queue, hm, hm_link);
hts_mutex_unlock(&hc->hc_rpc_mutex);
free(hm);
}
return NULL;
}
free(buf);
if(hm != NULL) {
hts_mutex_lock(&hc->hc_rpc_mutex);
while(1) {
if(hm->hm_error != 0) {
r = hm->hm_error;
TAILQ_REMOVE(&hc->hc_rpc_queue, hm, hm_link);
hts_mutex_unlock(&hc->hc_rpc_mutex);
free(hm);
htsmsg_destroy(m);
return NULL;
}
if(hm->hm_msg != NULL)
break;
hts_cond_wait(&hc->hc_rpc_cond, &hc->hc_rpc_mutex);
}
TAILQ_REMOVE(&hc->hc_rpc_queue, hm, hm_link);
hts_mutex_unlock(&hc->hc_rpc_mutex);
reply = hm->hm_msg;
free(hm);
} else {
if((reply = htsp_recv(hc)) == NULL) {
htsmsg_destroy(m);
return NULL;
}
}
if(!htsmsg_get_u32(reply, "noaccess", &noaccess) && noaccess) {
retry++;
goto again;
}
htsmsg_destroy(m); /* Destroy original message */
return reply;
}
