diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp index 566c508a4..64ab0ac06 100644 --- a/trunk/src/app/srs_app_config.cpp +++ b/trunk/src/app/srs_app_config.cpp @@ -2606,6 +2606,16 @@ srs_error_t SrsConfig::vhost_to_json(SrsConfDirective* vhost, SrsJsonObject* obj hls->set("hls_nb_notify", sdir->dumps_arg0_to_integer()); } else if (sdir->name == "hls_wait_keyframe") { hls->set("hls_wait_keyframe", sdir->dumps_arg0_to_boolean()); + } else if (sdir->name == "hls_keys") { + hls->set("hls_keys", sdir->dumps_arg0_to_boolean()); + } else if (sdir->name == "hls_fragments_per_key") { + hls->set("hls_fragments_per_key", sdir->dumps_arg0_to_number()); + } else if (sdir->name == "hls_key_file") { + hls->set("hls_key_file", sdir->dumps_arg0_to_str()); + } else if (sdir->name == "hls_key_file_path") { + hls->set("hls_key_file_path", sdir->dumps_arg0_to_str()); + } else if (sdir->name == "hls_key_url") { + hls->set("hls_key_url", sdir->dumps_arg0_to_str()); } } } @@ -3773,7 +3783,8 @@ srs_error_t SrsConfig::check_normal_config() if (m != "enabled" && m != "hls_entry_prefix" && m != "hls_path" && m != "hls_fragment" && m != "hls_window" && m != "hls_on_error" && m != "hls_storage" && m != "hls_mount" && m != "hls_td_ratio" && m != "hls_aof_ratio" && m != "hls_acodec" && m != "hls_vcodec" && m != "hls_m3u8_file" && m != "hls_ts_file" && m != "hls_ts_floor" && m != "hls_cleanup" && m != "hls_nb_notify" - && m != "hls_wait_keyframe" && m != "hls_dispose") { + && m != "hls_wait_keyframe" && m != "hls_dispose" && m != "hls_keys" && m != "hls_fragments_per_key" && m != "hls_key_file" + && m != "hls_key_file_path" && m != "hls_key_url") { return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "illegal vhost.hls.%s of %s", m.c_str(), vhost->arg0().c_str()); } @@ -6278,6 +6289,93 @@ bool SrsConfig::get_hls_wait_keyframe(string vhost) return SRS_CONF_PERFER_TRUE(conf->arg0()); } +bool SrsConfig::get_hls_keys(string vhost) +{ + static bool DEFAULT = false; + + SrsConfDirective* conf = get_hls(vhost); + if (!conf) { + return DEFAULT; + } + + conf = conf->get("hls_keys"); + if (!conf || conf->arg0().empty()) { + return DEFAULT; + } + + return SRS_CONF_PERFER_TRUE(conf->arg0()); +} + +int SrsConfig::get_hls_fragments_per_key(string vhost) +{ + static int DEFAULT = 0; + + SrsConfDirective* conf = get_hls(vhost); + if (!conf) { + return DEFAULT; + } + + conf = conf->get("hls_fragments_per_key"); + if (!conf || conf->arg0().empty()) { + return DEFAULT; + } + + return ::atoi(conf->arg0().c_str()); +} + +string SrsConfig::get_hls_key_file(string vhost) +{ + static string DEFAULT = "[app]/[stream].key"; + + SrsConfDirective* conf = get_hls(vhost); + if (!conf) { + return DEFAULT; + } + + conf = conf->get("hls_key_file"); + if (!conf || conf->arg0().empty()) { + return DEFAULT; + } + + return conf->arg0(); +} + +string SrsConfig::get_hls_key_file_path(std::string vhost) +{ + //put the key in ts path defaultly. + static string DEFAULT = get_hls_path(vhost); + + SrsConfDirective* conf = get_hls(vhost); + if (!conf) { + return DEFAULT; + } + + conf = conf->get("hls_key_file_path"); + if (!conf || conf->arg0().empty()) { + return DEFAULT; + } + + return conf->arg0(); +} + +string SrsConfig::get_hls_key_url(std::string vhost) +{ + //put the key in ts path defaultly. + static string DEFAULT = get_hls_path(vhost); + + SrsConfDirective* conf = get_hls(vhost); + if (!conf) { + return DEFAULT; + } + + conf = conf->get("hls_key_url"); + if (!conf || conf->arg0().empty()) { + return DEFAULT; + } + + return conf->arg0(); +} + SrsConfDirective *SrsConfig::get_hds(const string &vhost) { SrsConfDirective* conf = get_vhost(vhost); diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp index 14dc8a7fe..ece63a34d 100644 --- a/trunk/src/app/srs_app_config.hpp +++ b/trunk/src/app/srs_app_config.hpp @@ -1236,6 +1236,26 @@ public: * whether reap the ts when got keyframe. */ virtual bool get_hls_wait_keyframe(std::string vhost); + /** + * encrypt ts or not + */ + virtual bool get_hls_keys(std::string vhost); + /** + * how many fragments can one key encrypted. + */ + virtual int get_hls_fragments_per_key(std::string vhost); + /** + * get the HLS key file path template. + */ + virtual std::string get_hls_key_file(std::string vhost); + /** + * get the HLS key file store path. + */ + virtual std::string get_hls_key_file_path(std::string vhost); + /** + * get the HLS key file url which will be put in m3u8 + */ + virtual std::string get_hls_key_url(std::string vhost); /** * get the size of bytes to read from cdn network, for the on_hls_notify callback, * that is, to read max bytes of the bytes from the callback, or timeout or error. diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp index f6dacc659..75779f102 100644 --- a/trunk/src/app/srs_app_hls.cpp +++ b/trunk/src/app/srs_app_hls.cpp @@ -52,6 +52,8 @@ using namespace std; #include #include +#include + // drop the segment when duration of ts too small. #define SRS_AUTO_HLS_SEGMENT_MIN_DURATION_MS 100 @@ -60,13 +62,28 @@ using namespace std; // reset the piece id when deviation overflow this. #define SRS_JUMP_WHEN_PIECE_DEVIATION 20 -SrsHlsSegment::SrsHlsSegment(SrsTsContext* c, SrsAudioCodecId ac, SrsVideoCodecId vc) +SrsHlsSegment::SrsHlsSegment(SrsTsContext* c, SrsAudioCodecId ac, SrsVideoCodecId vc,bool needenc) { sequence_no = 0; - writer = new SrsFileWriter(); + + if(needenc) + { + writer = new SrsEncFileWriter(); + } + else + { + writer = new SrsFileWriter(); + } + tscw = new SrsTsContextWriter(writer, c, ac, vc); } +void SrsHlsSegment::SrsSetEncCfg(unsigned char* keyval,unsigned char *ivval) +{ + memcpy(iv,ivval,16); + dynamic_cast(writer)->SetEncCfg(keyval,ivval); +} + SrsHlsSegment::~SrsHlsSegment() { srs_freep(tscw); @@ -193,6 +210,8 @@ SrsHlsMuxer::SrsHlsMuxer() max_td = 0; _sequence_no = 0; current = NULL; + hls_keys = false; + hls_fragments_per_key = 10; async = new SrsAsyncCallWorker(); context = new SrsTsContext(); segments = new SrsFragmentWindow(); @@ -265,8 +284,9 @@ srs_error_t SrsHlsMuxer::initialize() srs_error_t SrsHlsMuxer::update_config(SrsRequest* r, string entry_prefix, string path, string m3u8_file, string ts_file, double fragment, double window, - bool ts_floor, double aof_ratio, bool cleanup, bool wait_keyframe -) { + bool ts_floor, double aof_ratio, bool cleanup, bool wait_keyframe, bool keys, + int fragments_per_key, string key_file ,string key_file_path, string key_url) + { srs_error_t err = srs_success; srs_freep(req); @@ -284,7 +304,13 @@ srs_error_t SrsHlsMuxer::update_config(SrsRequest* r, string entry_prefix, accept_floor_ts = 0; hls_window = window; deviation_ts = 0; - + + hls_keys = keys; + hls_fragments_per_key = fragments_per_key; + hls_key_file = key_file; + hls_key_file_path = key_file_path; + hls_key_url = key_url; + // generate the m3u8 dir and path. m3u8_url = srs_path_build_stream(m3u8_file, req->vhost, req->app, req->stream); m3u8 = path + "/" + m3u8_url; @@ -297,7 +323,18 @@ srs_error_t SrsHlsMuxer::update_config(SrsRequest* r, string entry_prefix, if ((err = srs_create_dir_recursively(m3u8_dir)) != srs_success) { return srs_error_wrap(err, "create dir"); } - + + if(hls_keys && (hls_path != hls_key_file_path) ) + { + string key_file = hls_key_file; + key_file = srs_path_build_stream(key_file, req->vhost, req->app, req->stream); + + string key_dir = srs_path_dirname(hls_key_file_path + "/" + key_file); + if ((err = srs_create_dir_recursively(key_dir)) != srs_success) { + return srs_error_wrap(err, "create dir"); + } + } + return err; } @@ -342,8 +379,53 @@ srs_error_t SrsHlsMuxer::segment_open() } // new segment. - current = new SrsHlsSegment(context, default_acodec, default_vcodec); + current = new SrsHlsSegment(context, default_acodec, default_vcodec, hls_keys); current->sequence_no = _sequence_no++; + + if(hls_keys){ + + if(current->sequence_no % hls_fragments_per_key == 0) + { + string key_file = hls_key_file; + key_file = srs_path_build_stream(key_file, req->vhost, req->app, req->stream); + + if (true) { + std::stringstream ss; + ss << current->sequence_no; + key_file = srs_string_replace(key_file, "[seq]", ss.str()); + } + + string key_full_path = hls_key_file_path + "/" + key_file; + + if (RAND_bytes(key, 16) < 0) { + srs_error_wrap(err, "rand key failed."); + } + + if (RAND_bytes(iv, 16) < 0) { + srs_error_wrap(err, "rand iv failed."); + } + + int flags = O_CREAT|O_WRONLY|O_TRUNC; + mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH; + int fd; + + if ((fd = ::open(key_full_path.c_str(), flags, mode)) < 0) { + return srs_error_new(ERROR_SYSTEM_FILE_OPENE, "open file %s failed", key_full_path.c_str()); + } + ssize_t nwrite; + if ((nwrite = ::write(fd, key, 16)) != 16) { + return srs_error_new(ERROR_SYSTEM_FILE_WRITE, "write to file %s failed", key_full_path.c_str()); + } + + if (::close(fd) < 0) { + srs_warn("close file %s failed",key_full_path.c_str()); + } + + } + current->SrsSetEncCfg(key,iv); + + } + // generate filename. std::string ts_file = hls_ts_file; @@ -681,6 +763,22 @@ srs_error_t SrsHlsMuxer::_refresh_m3u8(string m3u8_file) // #EXT-X-DISCONTINUITY\n ss << "#EXT-X-DISCONTINUITY" << SRS_CONSTS_LF; } + + if(hls_keys && (segment->sequence_no%hls_fragments_per_key == 0)) + { + string filename = req->stream+"-"+srs_int2str(segment->sequence_no)+".key"; + char hexiv[33]; + ff_data_to_hex(hexiv,segment->iv,16,0); + hexiv[32] = '\0'; + string key_path; + //if key_url is not set,only use the file name + if(hls_key_url == hls_key_file_path){ + key_path = filename; + }else{ + key_path = hls_key_url+"/"+filename; + } + ss << "#EXT-X-KEY:METHOD=AES-128,URI=" << "\""<< key_path <<"\",IV=0x"<get_hls_ts_floor(vhost); // the seconds to dispose the hls. int hls_dispose = _srs_config->get_hls_dispose(vhost); + + bool hls_keys = _srs_config->get_hls_keys(vhost); + int hls_fragments_per_key = _srs_config->get_hls_fragments_per_key(vhost); + string hls_key_file = _srs_config->get_hls_key_file(vhost); + string hls_key_file_path = _srs_config->get_hls_key_file_path(vhost); + string hls_key_url = _srs_config->get_hls_key_url(vhost); // TODO: FIXME: support load exists m3u8, to continue publish stream. // for the HLS donot requires the EXT-X-MEDIA-SEQUENCE be monotonically increase. // open muxer if ((err = muxer->update_config(req, entry_prefix, path, m3u8_file, ts_file, hls_fragment, - hls_window, ts_floor, hls_aof_ratio, cleanup, wait_keyframe)) != srs_success ) { + hls_window, ts_floor, hls_aof_ratio, cleanup, wait_keyframe,hls_keys,hls_fragments_per_key, + hls_key_file, hls_key_file_path, hls_key_url)) != srs_success ) { return srs_error_wrap(err, "hls: update config"); } diff --git a/trunk/src/app/srs_app_hls.hpp b/trunk/src/app/srs_app_hls.hpp index e108b0bd1..a790b53eb 100644 --- a/trunk/src/app/srs_app_hls.hpp +++ b/trunk/src/app/srs_app_hls.hpp @@ -67,9 +67,19 @@ public: SrsFileWriter* writer; // The TS context writer to write TS to file. SrsTsContextWriter* tscw; + // Will be saved in m3u8 file. + unsigned char iv[16]; + // The full key path. + std::string keypath; + public: - SrsHlsSegment(SrsTsContext* c, SrsAudioCodecId ac, SrsVideoCodecId vc); + SrsHlsSegment(SrsTsContext* c, SrsAudioCodecId ac, SrsVideoCodecId vc,bool needenc); virtual ~SrsHlsSegment(); +public: + + void SrsSetEncCfg(unsigned char* keyval,unsigned char * ivval); + + }; /** @@ -146,6 +156,22 @@ private: // used to detect the dup or jmp or ts. int64_t accept_floor_ts; int64_t previous_floor_ts; + +private: + //encrypted or not + bool hls_keys; + int hls_fragments_per_key; + //key file name + std::string hls_key_file; + //key file path + std::string hls_key_file_path; + //key file url + std::string hls_key_url; + + unsigned char key[16]; + unsigned char iv[16]; + + private: int _sequence_no; int max_td; @@ -182,7 +208,8 @@ public: virtual srs_error_t update_config(SrsRequest* r, std::string entry_prefix, std::string path, std::string m3u8_file, std::string ts_file, double fragment, double window, bool ts_floor, double aof_ratio, - bool cleanup, bool wait_keyframe); + bool cleanup, bool wait_keyframe , bool keys, int fragments_per_key, + std::string key_file , std::string key_file_path,std::string key_url); /** * open a new segment(a new ts file) */ diff --git a/trunk/src/kernel/srs_kernel_ts.cpp b/trunk/src/kernel/srs_kernel_ts.cpp index 108567662..7f2c5334f 100644 --- a/trunk/src/kernel/srs_kernel_ts.cpp +++ b/trunk/src/kernel/srs_kernel_ts.cpp @@ -2607,6 +2607,65 @@ SrsVideoCodecId SrsTsContextWriter::video_codec() return vcodec; } +srs_error_t SrsEncFileWriter::write(void* buf, size_t count, ssize_t* pnwrite) +{ + + srs_assert(count == SRS_TS_PACKET_SIZE); + srs_error_t err = srs_success; + + if(buflength != HLS_AES_ENCRYPT_BLOCK_LENGTH) + { + memcpy(tmpbuf+buflength,(char*)buf,SRS_TS_PACKET_SIZE); + buflength += SRS_TS_PACKET_SIZE; + } + if(buflength == HLS_AES_ENCRYPT_BLOCK_LENGTH) + { + unsigned char encryptedbuf[HLS_AES_ENCRYPT_BLOCK_LENGTH]; + memset(encryptedbuf,0,HLS_AES_ENCRYPT_BLOCK_LENGTH); + AES_cbc_encrypt((unsigned char *)tmpbuf, (unsigned char *)encryptedbuf, HLS_AES_ENCRYPT_BLOCK_LENGTH, &key, iv, AES_ENCRYPT); + buflength = 0; + memset(tmpbuf,0,HLS_AES_ENCRYPT_BLOCK_LENGTH); + return SrsFileWriter::write(encryptedbuf,HLS_AES_ENCRYPT_BLOCK_LENGTH,pnwrite); + } + else + { + return err; + } + +}; + +srs_error_t SrsEncFileWriter::SetEncCfg(unsigned char* keyval,unsigned char *ivval) +{ + + srs_error_t err = srs_success; + + if (AES_set_encrypt_key(keyval, 16*8, &key)) + { + return srs_error_new(ERROR_SYSTEM_FILE_WRITE, "set aes key failed"); + } + + memcpy(iv,ivval,16); + return err; +} + +void SrsEncFileWriter::close() +{ + if(buflength > 0) + { + int addBytes = 16 - buflength % 16; + memset(tmpbuf + buflength, addBytes, addBytes); + unsigned char encryptedbuf[buflength+addBytes]; + memset(encryptedbuf,0,buflength+addBytes); + AES_cbc_encrypt((unsigned char *)tmpbuf, (unsigned char *)encryptedbuf, buflength+addBytes, &key, iv, AES_ENCRYPT); + SrsFileWriter::write(encryptedbuf,buflength+addBytes,NULL); + + buflength = 0; + memset(tmpbuf,0,HLS_AES_ENCRYPT_BLOCK_LENGTH); + } + SrsFileWriter::close(); +} + + SrsTsMessageCache::SrsTsMessageCache() { audio = NULL; diff --git a/trunk/src/kernel/srs_kernel_ts.hpp b/trunk/src/kernel/srs_kernel_ts.hpp index 36bf01285..d3f131e59 100644 --- a/trunk/src/kernel/srs_kernel_ts.hpp +++ b/trunk/src/kernel/srs_kernel_ts.hpp @@ -31,8 +31,11 @@ #include #include #include +#include #include +#include + class SrsBuffer; class SrsTsMessageCache; @@ -1571,6 +1574,36 @@ public: virtual SrsVideoCodecId video_codec(); }; +/* +* Used for HLS Encryption +*/ + +#define HLS_AES_ENCRYPT_BLOCK_LENGTH 188*4 + +static char tmpbuf[HLS_AES_ENCRYPT_BLOCK_LENGTH] = {0}; +static int buflength = 0; + + +class SrsEncFileWriter: public SrsFileWriter +{ +public: + SrsEncFileWriter() + { + memset(iv,0,16); + } + virtual ~SrsEncFileWriter(){} + + virtual srs_error_t write(void* buf, size_t count, ssize_t* pnwrite); + + srs_error_t SetEncCfg(unsigned char* key,unsigned char *iv); + + virtual void close(); + +private: + AES_KEY key; + unsigned char iv[16]; +}; + /** * TS messages cache, to group frames to TS message, * for example, we may write multiple AAC RAW frames to a TS message. diff --git a/trunk/src/kernel/srs_kernel_utility.cpp b/trunk/src/kernel/srs_kernel_utility.cpp index 1e4142ee5..2e69069f2 100644 --- a/trunk/src/kernel/srs_kernel_utility.cpp +++ b/trunk/src/kernel/srs_kernel_utility.cpp @@ -1050,6 +1050,27 @@ int srs_do_create_dir_recursively(string dir) } return c; } + + char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase) + { + int i; + static const char hex_table_uc[16] = { '0', '1', '2', '3', + '4', '5', '6', '7', + '8', '9', 'A', 'B', + 'C', 'D', 'E', 'F' }; + static const char hex_table_lc[16] = { '0', '1', '2', '3', + '4', '5', '6', '7', + '8', '9', 'a', 'b', + 'c', 'd', 'e', 'f' }; + const char *hex_table = lowercase ? hex_table_lc : hex_table_uc; + + for (i = 0; i < s; i++) { + buff[i * 2] = hex_table[src[i] >> 4]; + buff[i * 2 + 1] = hex_table[src[i] & 0xF]; + } + + return buff; + } int ff_hex_to_data(uint8_t* data, const char* p) { diff --git a/trunk/src/kernel/srs_kernel_utility.hpp b/trunk/src/kernel/srs_kernel_utility.hpp index b0c4665dc..0403d1d4b 100644 --- a/trunk/src/kernel/srs_kernel_utility.hpp +++ b/trunk/src/kernel/srs_kernel_utility.hpp @@ -181,6 +181,10 @@ extern char* srs_av_base64_encode(char* out, int out_size, const uint8_t* in, in * output hex to data={0x13, 0x90, 0x56, 0xe5, 0xa0} */ extern int ff_hex_to_data(uint8_t* data, const char* p); +/** + * convert data string to hex. + */ +extern char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase); /** * generate the c0 chunk header for msg.