diff options
Diffstat (limited to 'libsoup/soup-content-sniffer.c')
| -rw-r--r-- | libsoup/soup-content-sniffer.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/libsoup/soup-content-sniffer.c b/libsoup/soup-content-sniffer.c index 5e0b2a70..5659af9a 100644 --- a/libsoup/soup-content-sniffer.c +++ b/libsoup/soup-content-sniffer.c @@ -177,6 +177,103 @@ sniff_images (SoupContentSniffer *sniffer, SoupBuffer *buffer) } /* This table is based on the MIMESNIFF spec; + * See 6.2 Matching an audio or video type pattern + */ +static SoupContentSnifferMediaPattern audio_video_types_table[] = { + { (const guchar *)"\xFF\xFF\xFF\xFF", + (const guchar *)"\x1A\x45\xDF\xA3", + 4, + "video/webm" }, + + { (const guchar *)"\xFF\xFF\xFF\xFF", + (const guchar *)".snd", + 4, + "audio/basic" }, + + + { (const guchar *)"\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF", + (const guchar *)"FORM\0\0\0\0AIFF", + 12, + "audio/aiff" }, + + { (const guchar *)"\xFF\xFF\xFF", + (const guchar *)"ID3", + 3, + "audio/mpeg" }, + + { (const guchar *)"\xFF\xFF\xFF\xFF\xFF", + (const guchar *)"OggS\0", + 5, + "application/ogg" }, + + { (const guchar *)"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", + (const guchar *)"MThd\x00\x00\x00\x06", + 8, + "audio/midi" }, + + { (const guchar *)"\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF", + (const guchar *)"RIFF\x00\x00\x00\x00AVI ", + 12, + "video/avi" }, + + { (const guchar *)"\xFF\xFF\xFF\xFF\x00\x00\x00\x00\xFF\xFF\xFF\xFF", + (const guchar *)"RIFF\x00\x00\x00\x00WAVE", + 12, + "audio/wave" }, +}; + +static gboolean +sniff_mp4 (SoupContentSniffer *sniffer, SoupBuffer *buffer) +{ + const char *resource = (const char *)buffer->data; + int resource_length = MIN (512, buffer->length); + guint32 box_size = *((guint32*)resource); + int i; + +#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + box_size = ((box_size >> 24) | + ((box_size << 8) & 0x00FF0000) | + ((box_size >> 8) & 0x0000FF00) | + (box_size << 24)); +#endif + + if (resource_length < 12 || resource_length < box_size || box_size % 4 != 0) + return FALSE; + + if (!g_str_has_prefix (resource + 4, "ftyp")) + return FALSE; + + if (!g_str_has_prefix (resource + 8, "mp4")) + return FALSE; + + for (i = 16; i < box_size && i < resource_length; i = i + 4) { + if (g_str_has_prefix (resource + i, "mp4")) + return TRUE; + } + + return FALSE; +} + +static char* +sniff_audio_video (SoupContentSniffer *sniffer, SoupBuffer *buffer) +{ + char *sniffed_type; + + sniffed_type = sniff_media (sniffer, + buffer, + audio_video_types_table, + G_N_ELEMENTS (audio_video_types_table)); + + if (sniffed_type != NULL) + return sniffed_type; + + if (sniff_mp4 (sniffer, buffer)) + return g_strdup ("video/mp4"); + + return NULL; +} + +/* This table is based on the MIMESNIFF spec; * See 7.1 Identifying a resource with an unknown MIME type */ typedef struct { @@ -462,6 +559,10 @@ sniff_unknown (SoupContentSniffer *sniffer, SoupBuffer *buffer, if (sniffed_type != NULL) return sniffed_type; + sniffed_type = sniff_audio_video (sniffer, buffer); + + if (sniffed_type != NULL) + return sniffed_type; for (i = 0; i < resource_length; i++) { if (byte_looks_binary[resource[i]]) @@ -714,6 +815,16 @@ soup_content_sniffer_real_sniff (SoupContentSniffer *sniffer, SoupMessage *msg, return g_strdup (content_type); } + /* 7. Audio and video types. */ + if (!g_ascii_strncasecmp (content_type, "audio/", 6) || + !g_ascii_strncasecmp (content_type, "video/", 6) || + !g_ascii_strcasecmp (content_type, "application/ogg")) { + sniffed_type = sniff_audio_video (sniffer, buffer); + if (sniffed_type != NULL) + return sniffed_type; + return g_strdup (content_type); + } + /* If we got text/plain, use text_or_binary */ if (g_str_equal (content_type, "text/plain")) { return sniff_text_or_binary (sniffer, buffer); |