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support DRM source with sample-aes-ctr encryption to download #108

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merged 1 commit into from
Apr 14, 2021
Merged

support DRM source with sample-aes-ctr encryption to download #108

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7 changes: 6 additions & 1 deletion src/hls.c
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Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,9 @@ long get_hls_data_from_url(char *url, char **out, size_t *size, int type, char *

int is_playlist_FPS(char* source)
{
return strstr(source, "KEYFORMAT=\"com.apple.streamingkeydelivery\"");
return strstr(source, "KEYFORMAT=\"com.apple.streamingkeydelivery\"") ||
strstr(source, "urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed") ||
strstr(source, "com.microsoft.playready");
}

int get_playlist_type(char *source)
Expand Down Expand Up @@ -247,6 +249,9 @@ static int parse_tag(hls_media_playlist_t *me, struct hls_media_segment *ms, cha
if (!strncmp(tag, "#EXT-X-KEY:METHOD=AES-128", 25)) {
enc_type = ENC_AES128;
me->enc_aes.iv_is_static = false;
} else if (!strncmp(tag, "#EXT-X-KEY:METHOD=SAMPLE-AES-CTR", 32)) {
enc_type = ENC_AES_SAMPLE_CTR;
me->enc_aes.iv_is_static = is_playlist_FPS(me->source);
} else if (!strncmp(tag, "#EXT-X-KEY:METHOD=SAMPLE-AES", 28)) {
enc_type = ENC_AES_SAMPLE;
me->enc_aes.iv_is_static = is_playlist_FPS(me->source);
Expand Down
1 change: 1 addition & 0 deletions src/hls.h
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ extern "C" {
#define MASTER_PLAYLIST 0
#define MEDIA_PLAYLIST 1

#define ENC_AES_SAMPLE_CTR 0x03
#define ENC_AES_SAMPLE 0x02
#define ENC_AES128 0x01
#define ENC_NONE 0x00
Expand Down
15 changes: 10 additions & 5 deletions src/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,14 @@
#include "msg.h"
#include "misc.h"

char* str_ecryption_type[] ={
"NONE",
"AES-128",
"SAMPLE-AES",
"SAMPLE-AES-CTR",
};


static size_t priv_write(const uint8_t *data, size_t len, void *opaque) {
return fwrite(data, 1, len, opaque);
}
Expand Down Expand Up @@ -370,11 +378,8 @@ int main(int argc, char *argv[])
return 1;
}

if (media_playlist.encryption) {
MSG_PRINT("HLS Stream is %s encrypted.\n",
media_playlist.encryptiontype == ENC_AES128 ? "AES-128" :
"SAMPLE-AES");
}
MSG_PRINT("HLS Stream is %s encrypted.\n",
str_ecryption_type[media_playlist.encryptiontype]);

MSG_VERBOSE("Media Playlist parsed successfully.\n");

Expand Down