#include "libavcodec/bytestream.h"
#include "libavutil/avstring.h"
+#include "libavutil/intfloat.h"
#include "libavutil/lfg.h"
+#include "libavutil/opt.h"
+#include "libavutil/random_seed.h"
#include "libavutil/sha.h"
#include "avformat.h"
#include "internal.h"
#include "flv.h"
#include "rtmp.h"
+#include "rtmpcrypt.h"
#include "rtmppkt.h"
#include "url.h"
+#if CONFIG_ZLIB
+#include <zlib.h>
+#endif
+
//#define DEBUG
+#define APP_MAX_LENGTH 128
+#define PLAYPATH_MAX_LENGTH 256
+#define TCURL_MAX_LENGTH 512
+#define FLASHVER_MAX_LENGTH 64
+#define RTMP_PKTDATA_DEFAULT_SIZE 4096
+
/** RTMP protocol handler state */
typedef enum {
STATE_START, ///< client has not done anything yet
STATE_HANDSHAKED, ///< client has performed handshake
- STATE_RELEASING, ///< client releasing stream before publish it (for output)
STATE_FCPUBLISH, ///< client FCPublishing stream (for output)
- STATE_CONNECTING, ///< client connected to server successfully
- STATE_READY, ///< client has sent all needed commands and waits for server reply
STATE_PLAYING, ///< client has started receiving multimedia data from server
STATE_PUBLISHING, ///< client has started sending multimedia data to server (for output)
+ STATE_RECEIVING, ///< received a publish command (for input)
STATE_STOPPED, ///< the broadcast has been stopped
} ClientState;
+typedef struct TrackedMethod {
+ char *name;
+ int id;
+} TrackedMethod;
+
/** protocol handler context */
typedef struct RTMPContext {
+ const AVClass *class;
URLContext* stream; ///< TCP stream used in interactions with RTMP server
RTMPPacket prev_pkt[2][RTMP_CHANNELS]; ///< packet history used when reading and sending packets
- int chunk_size; ///< size of the chunks RTMP packets are divided into
+ int in_chunk_size; ///< size of the chunks incoming RTMP packets are divided into
+ int out_chunk_size; ///< size of the chunks outgoing RTMP packets are divided into
int is_input; ///< input/output flag
- char playpath[256]; ///< path to filename to play (with possible "mp4:" prefix)
- char app[128]; ///< application
+ char *playpath; ///< stream identifier to play (with possible "mp4:" prefix)
+ int live; ///< 0: recorded, -1: live, -2: both
+ char *app; ///< name of application
+ char *conn; ///< append arbitrary AMF data to the Connect message
ClientState state; ///< current state
int main_channel_id; ///< an additional channel ID which is used for some invocations
uint8_t* flv_data; ///< buffer with data for demuxer
int flv_size; ///< current buffer size
int flv_off; ///< number of bytes read from current buffer
+ int flv_nb_packets; ///< number of flv packets published
RTMPPacket out_pkt; ///< rtmp packet, created from flv a/v or metadata (for output)
uint32_t client_report_size; ///< number of bytes after which client should report to server
uint32_t bytes_read; ///< number of bytes read from server
uint32_t last_bytes_read; ///< number of bytes read last reported to server
+ int skip_bytes; ///< number of bytes to skip from the input FLV stream in the next write call
+ uint8_t flv_header[11]; ///< partial incoming flv packet header
+ int flv_header_bytes; ///< number of initialized bytes in flv_header
+ int nb_invokes; ///< keeps track of invoke messages
+ char* tcurl; ///< url of the target stream
+ char* flashver; ///< version of the flash plugin
+ char* swfhash; ///< SHA256 hash of the decompressed SWF file (32 bytes)
+ int swfhash_len; ///< length of the SHA256 hash
+ int swfsize; ///< size of the decompressed SWF file
+ char* swfurl; ///< url of the swf player
+ char* swfverify; ///< URL to player swf file, compute hash/size automatically
+ char swfverification[42]; ///< hash of the SWF verification
+ char* pageurl; ///< url of the web page
+ char* subscribe; ///< name of live stream to subscribe
+ int server_bw; ///< server bandwidth
+ int client_buffer_time; ///< client buffer time in ms
+ int flush_interval; ///< number of packets flushed in the same request (RTMPT only)
+ int encrypted; ///< use an encrypted connection (RTMPE only)
+ TrackedMethod*tracked_methods; ///< tracked methods buffer
+ int nb_tracked_methods; ///< number of tracked methods
+ int tracked_methods_size; ///< size of the tracked methods buffer
+ int listen; ///< listen mode flag
+ int listen_timeout; ///< listen timeout to wait for new connections
+ int nb_streamid; ///< The next stream id to return on createStream calls
} RTMPContext;
#define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing
0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
};
+static int add_tracked_method(RTMPContext *rt, const char *name, int id)
+{
+ void *ptr;
+
+ if (rt->nb_tracked_methods + 1 > rt->tracked_methods_size) {
+ rt->tracked_methods_size = (rt->nb_tracked_methods + 1) * 2;
+ ptr = av_realloc(rt->tracked_methods,
+ rt->tracked_methods_size * sizeof(*rt->tracked_methods));
+ if (!ptr)
+ return AVERROR(ENOMEM);
+ rt->tracked_methods = ptr;
+ }
+
+ rt->tracked_methods[rt->nb_tracked_methods].name = av_strdup(name);
+ if (!rt->tracked_methods[rt->nb_tracked_methods].name)
+ return AVERROR(ENOMEM);
+ rt->tracked_methods[rt->nb_tracked_methods].id = id;
+ rt->nb_tracked_methods++;
+
+ return 0;
+}
+
+static void del_tracked_method(RTMPContext *rt, int index)
+{
+ memmove(&rt->tracked_methods[index], &rt->tracked_methods[index + 1],
+ sizeof(*rt->tracked_methods) * (rt->nb_tracked_methods - index - 1));
+ rt->nb_tracked_methods--;
+}
+
+static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset,
+ char **tracked_method)
+{
+ RTMPContext *rt = s->priv_data;
+ GetByteContext gbc;
+ double pkt_id;
+ int ret;
+ int i;
+
+ bytestream2_init(&gbc, pkt->data + offset, pkt->data_size - offset);
+ if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
+ return ret;
+
+ for (i = 0; i < rt->nb_tracked_methods; i++) {
+ if (rt->tracked_methods[i].id != pkt_id)
+ continue;
+
+ *tracked_method = rt->tracked_methods[i].name;
+ del_tracked_method(rt, i);
+ break;
+ }
+
+ return 0;
+}
+
+static void free_tracked_methods(RTMPContext *rt)
+{
+ int i;
+
+ for (i = 0; i < rt->nb_tracked_methods; i ++)
+ av_free(rt->tracked_methods[i].name);
+ av_free(rt->tracked_methods);
+}
+
+static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track)
+{
+ int ret;
+
+ if (pkt->type == RTMP_PT_INVOKE && track) {
+ GetByteContext gbc;
+ char name[128];
+ double pkt_id;
+ int len;
+
+ bytestream2_init(&gbc, pkt->data, pkt->data_size);
+ if ((ret = ff_amf_read_string(&gbc, name, sizeof(name), &len)) < 0)
+ goto fail;
+
+ if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
+ goto fail;
+
+ if ((ret = add_tracked_method(rt, name, pkt_id)) < 0)
+ goto fail;
+ }
+
+ ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+fail:
+ ff_rtmp_packet_destroy(pkt);
+ return ret;
+}
+
+static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p)
+{
+ char *field, *value;
+ char type;
+
+ /* The type must be B for Boolean, N for number, S for string, O for
+ * object, or Z for null. For Booleans the data must be either 0 or 1 for
+ * FALSE or TRUE, respectively. Likewise for Objects the data must be
+ * 0 or 1 to end or begin an object, respectively. Data items in subobjects
+ * may be named, by prefixing the type with 'N' and specifying the name
+ * before the value (ie. NB:myFlag:1). This option may be used multiple times
+ * to construct arbitrary AMF sequences. */
+ if (param[0] && param[1] == ':') {
+ type = param[0];
+ value = param + 2;
+ } else if (param[0] == 'N' && param[1] && param[2] == ':') {
+ type = param[1];
+ field = param + 3;
+ value = strchr(field, ':');
+ if (!value)
+ goto fail;
+ *value = '\0';
+ value++;
+
+ if (!field || !value)
+ goto fail;
+
+ ff_amf_write_field_name(p, field);
+ } else {
+ goto fail;
+ }
+
+ switch (type) {
+ case 'B':
+ ff_amf_write_bool(p, value[0] != '0');
+ break;
+ case 'S':
+ ff_amf_write_string(p, value);
+ break;
+ case 'N':
+ ff_amf_write_number(p, strtod(value, NULL));
+ break;
+ case 'Z':
+ ff_amf_write_null(p);
+ break;
+ case 'O':
+ if (value[0] != '0')
+ ff_amf_write_object_start(p);
+ else
+ ff_amf_write_object_end(p);
+ break;
+ default:
+ goto fail;
+ break;
+ }
+
+ return 0;
+
+fail:
+ av_log(s, AV_LOG_ERROR, "Invalid AMF parameter: %s\n", param);
+ return AVERROR(EINVAL);
+}
+
/**
* Generate 'connect' call and send it to the server.
*/
-static void gen_connect(URLContext *s, RTMPContext *rt, const char *proto,
- const char *host, int port)
+static int gen_connect(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
- uint8_t ver[64], *p;
- char tcurl[512];
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 4096)) < 0)
+ return ret;
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0, 4096);
p = pkt.data;
- ff_url_join(tcurl, sizeof(tcurl), proto, NULL, host, port, "/%s", rt->app);
ff_amf_write_string(&p, "connect");
- ff_amf_write_number(&p, 1.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_object_start(&p);
ff_amf_write_field_name(&p, "app");
ff_amf_write_string(&p, rt->app);
- if (rt->is_input) {
- snprintf(ver, sizeof(ver), "%s %d,%d,%d,%d", RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1,
- RTMP_CLIENT_VER2, RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
- } else {
- snprintf(ver, sizeof(ver), "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT);
+ if (!rt->is_input) {
ff_amf_write_field_name(&p, "type");
ff_amf_write_string(&p, "nonprivate");
}
ff_amf_write_field_name(&p, "flashVer");
- ff_amf_write_string(&p, ver);
+ ff_amf_write_string(&p, rt->flashver);
+
+ if (rt->swfurl) {
+ ff_amf_write_field_name(&p, "swfUrl");
+ ff_amf_write_string(&p, rt->swfurl);
+ }
+
ff_amf_write_field_name(&p, "tcUrl");
- ff_amf_write_string(&p, tcurl);
+ ff_amf_write_string(&p, rt->tcurl);
if (rt->is_input) {
ff_amf_write_field_name(&p, "fpad");
ff_amf_write_bool(&p, 0);
ff_amf_write_field_name(&p, "capabilities");
ff_amf_write_number(&p, 15.0);
+
+ /* Tell the server we support all the audio codecs except
+ * SUPPORT_SND_INTEL (0x0008) and SUPPORT_SND_UNUSED (0x0010)
+ * which are unused in the RTMP protocol implementation. */
ff_amf_write_field_name(&p, "audioCodecs");
- ff_amf_write_number(&p, 1639.0);
+ ff_amf_write_number(&p, 4071.0);
ff_amf_write_field_name(&p, "videoCodecs");
ff_amf_write_number(&p, 252.0);
ff_amf_write_field_name(&p, "videoFunction");
ff_amf_write_number(&p, 1.0);
+
+ if (rt->pageurl) {
+ ff_amf_write_field_name(&p, "pageUrl");
+ ff_amf_write_string(&p, rt->pageurl);
+ }
+ }
+ ff_amf_write_object_end(&p);
+
+ if (rt->conn) {
+ char *param = rt->conn;
+
+ // Write arbitrary AMF data to the Connect message.
+ while (param != NULL) {
+ char *sep;
+ param += strspn(param, " ");
+ if (!*param)
+ break;
+ sep = strchr(param, ' ');
+ if (sep)
+ *sep = '\0';
+ if ((ret = rtmp_write_amf_data(s, param, &p)) < 0) {
+ // Invalid AMF parameter.
+ ff_rtmp_packet_destroy(&pkt);
+ return ret;
+ }
+
+ if (sep)
+ param = sep + 1;
+ else
+ break;
+ }
+ }
+
+ pkt.data_size = p - pkt.data;
+
+ return rtmp_send_packet(rt, &pkt, 1);
+}
+
+static int read_connect(URLContext *s, RTMPContext *rt)
+{
+ RTMPPacket pkt = { 0 };
+ uint8_t *p;
+ const uint8_t *cp;
+ int ret;
+ char command[64];
+ int stringlen;
+ double seqnum;
+ uint8_t tmpstr[256];
+ GetByteContext gbc;
+
+ if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size,
+ rt->prev_pkt[1])) < 0)
+ return ret;
+ cp = pkt.data;
+ bytestream2_init(&gbc, cp, pkt.data_size);
+ if (ff_amf_read_string(&gbc, command, sizeof(command), &stringlen)) {
+ av_log(s, AV_LOG_ERROR, "Unable to read command string\n");
+ ff_rtmp_packet_destroy(&pkt);
+ return AVERROR_INVALIDDATA;
}
+ if (strcmp(command, "connect")) {
+ av_log(s, AV_LOG_ERROR, "Expecting connect, got %s\n", command);
+ ff_rtmp_packet_destroy(&pkt);
+ return AVERROR_INVALIDDATA;
+ }
+ ret = ff_amf_read_number(&gbc, &seqnum);
+ if (ret)
+ av_log(s, AV_LOG_WARNING, "SeqNum not found\n");
+ /* Here one could parse an AMF Object with data as flashVers and others. */
+ ret = ff_amf_get_field_value(gbc.buffer,
+ gbc.buffer + bytestream2_get_bytes_left(&gbc),
+ "app", tmpstr, sizeof(tmpstr));
+ if (ret)
+ av_log(s, AV_LOG_WARNING, "App field not found in connect\n");
+ if (!ret && strcmp(tmpstr, rt->app))
+ av_log(s, AV_LOG_WARNING, "App field don't match up: %s <-> %s\n",
+ tmpstr, rt->app);
+ ff_rtmp_packet_destroy(&pkt);
+
+ // Send Window Acknowledgement Size (as defined in speficication)
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
+ RTMP_PT_SERVER_BW, 0, 4)) < 0)
+ return ret;
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->server_bw);
+ pkt.data_size = p - pkt.data;
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+ if (ret < 0)
+ return ret;
+ // Send Peer Bandwidth
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
+ RTMP_PT_CLIENT_BW, 0, 5)) < 0)
+ return ret;
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->server_bw);
+ bytestream_put_byte(&p, 2); // dynamic
+ pkt.data_size = p - pkt.data;
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+ if (ret < 0)
+ return ret;
+
+ // Ping request
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
+ RTMP_PT_PING, 0, 6)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be16(&p, 0); // 0 -> Stream Begin
+ bytestream_put_be32(&p, 0);
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+ if (ret < 0)
+ return ret;
+
+ // Chunk size
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_CHUNK_SIZE, 0, 4)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->out_chunk_size);
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+ if (ret < 0)
+ return ret;
+
+ // Send result_ NetConnection.Connect.Success to connect
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_INVOKE, 0,
+ RTMP_PKTDATA_DEFAULT_SIZE)) < 0)
+ return ret;
+
+ p = pkt.data;
+ ff_amf_write_string(&p, "_result");
+ ff_amf_write_number(&p, seqnum);
+
+ ff_amf_write_object_start(&p);
+ ff_amf_write_field_name(&p, "fmsVer");
+ ff_amf_write_string(&p, "FMS/3,0,1,123");
+ ff_amf_write_field_name(&p, "capabilities");
+ ff_amf_write_number(&p, 31);
+ ff_amf_write_object_end(&p);
+
+ ff_amf_write_object_start(&p);
+ ff_amf_write_field_name(&p, "level");
+ ff_amf_write_string(&p, "status");
+ ff_amf_write_field_name(&p, "code");
+ ff_amf_write_string(&p, "NetConnection.Connect.Success");
+ ff_amf_write_field_name(&p, "description");
+ ff_amf_write_string(&p, "Connection succeeded.");
+ ff_amf_write_field_name(&p, "objectEncoding");
+ ff_amf_write_number(&p, 0);
ff_amf_write_object_end(&p);
pkt.data_size = p - pkt.data;
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&pkt);
+ if (ret < 0)
+ return ret;
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_INVOKE, 0, 30)) < 0)
+ return ret;
+ p = pkt.data;
+ ff_amf_write_string(&p, "onBWDone");
+ ff_amf_write_number(&p, 0);
+ ff_amf_write_null(&p);
+ ff_amf_write_number(&p, 8192);
+ pkt.data_size = p - pkt.data;
+ ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
ff_rtmp_packet_destroy(&pkt);
+
+ return ret;
}
/**
* Generate 'releaseStream' call and send it to the server. It should make
* the server release some channel for media streams.
*/
-static void gen_release_stream(URLContext *s, RTMPContext *rt)
+static int gen_release_stream(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0,
- 29 + strlen(rt->playpath));
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 29 + strlen(rt->playpath))) < 0)
+ return ret;
av_log(s, AV_LOG_DEBUG, "Releasing stream...\n");
p = pkt.data;
ff_amf_write_string(&p, "releaseStream");
- ff_amf_write_number(&p, 2.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_string(&p, rt->playpath);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 1);
}
/**
* Generate 'FCPublish' call and send it to the server. It should make
* the server preapare for receiving media streams.
*/
-static void gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
+static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0,
- 25 + strlen(rt->playpath));
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 25 + strlen(rt->playpath))) < 0)
+ return ret;
av_log(s, AV_LOG_DEBUG, "FCPublish stream...\n");
p = pkt.data;
ff_amf_write_string(&p, "FCPublish");
- ff_amf_write_number(&p, 3.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_string(&p, rt->playpath);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 1);
}
/**
* Generate 'FCUnpublish' call and send it to the server. It should make
* the server destroy stream.
*/
-static void gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
+static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0,
- 27 + strlen(rt->playpath));
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 27 + strlen(rt->playpath))) < 0)
+ return ret;
av_log(s, AV_LOG_DEBUG, "UnPublishing stream...\n");
p = pkt.data;
ff_amf_write_string(&p, "FCUnpublish");
- ff_amf_write_number(&p, 5.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_string(&p, rt->playpath);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 0);
}
/**
* Generate 'createStream' call and send it to the server. It should make
* the server allocate some channel for media streams.
*/
-static void gen_create_stream(URLContext *s, RTMPContext *rt)
+static int gen_create_stream(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
av_log(s, AV_LOG_DEBUG, "Creating stream...\n");
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0, 25);
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 25)) < 0)
+ return ret;
p = pkt.data;
ff_amf_write_string(&p, "createStream");
- ff_amf_write_number(&p, rt->is_input ? 3.0 : 4.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 1);
}
* Generate 'deleteStream' call and send it to the server. It should make
* the server remove some channel for media streams.
*/
-static void gen_delete_stream(URLContext *s, RTMPContext *rt)
+static int gen_delete_stream(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
av_log(s, AV_LOG_DEBUG, "Deleting stream...\n");
- ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, 0, 34);
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 34)) < 0)
+ return ret;
p = pkt.data;
ff_amf_write_string(&p, "deleteStream");
- ff_amf_write_number(&p, 0.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_number(&p, rt->main_channel_id);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 0);
+}
+
+/**
+ * Generate client buffer time and send it to the server.
+ */
+static int gen_buffer_time(URLContext *s, RTMPContext *rt)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING,
+ 1, 10)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be16(&p, 3);
+ bytestream_put_be32(&p, rt->main_channel_id);
+ bytestream_put_be32(&p, rt->client_buffer_time);
+
+ return rtmp_send_packet(rt, &pkt, 0);
}
/**
* Generate 'play' call and send it to the server, then ping the server
* to start actual playing.
*/
-static void gen_play(URLContext *s, RTMPContext *rt)
+static int gen_play(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
av_log(s, AV_LOG_DEBUG, "Sending play command for '%s'\n", rt->playpath);
- ff_rtmp_packet_create(&pkt, RTMP_VIDEO_CHANNEL, RTMP_PT_INVOKE, 0,
- 20 + strlen(rt->playpath));
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_VIDEO_CHANNEL, RTMP_PT_INVOKE,
+ 0, 29 + strlen(rt->playpath))) < 0)
+ return ret;
+
pkt.extra = rt->main_channel_id;
p = pkt.data;
ff_amf_write_string(&p, "play");
- ff_amf_write_number(&p, 0.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_string(&p, rt->playpath);
+ ff_amf_write_number(&p, rt->live);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
-
- // set client buffer time disguised in ping packet
- ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, 1, 10);
-
- p = pkt.data;
- bytestream_put_be16(&p, 3);
- bytestream_put_be32(&p, 1);
- bytestream_put_be32(&p, 256); //TODO: what is a good value here?
-
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 1);
}
/**
* Generate 'publish' call and send it to the server.
*/
-static void gen_publish(URLContext *s, RTMPContext *rt)
+static int gen_publish(URLContext *s, RTMPContext *rt)
{
RTMPPacket pkt;
uint8_t *p;
+ int ret;
av_log(s, AV_LOG_DEBUG, "Sending publish command for '%s'\n", rt->playpath);
- ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, 0,
- 30 + strlen(rt->playpath));
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
+ 0, 30 + strlen(rt->playpath))) < 0)
+ return ret;
+
pkt.extra = rt->main_channel_id;
p = pkt.data;
ff_amf_write_string(&p, "publish");
- ff_amf_write_number(&p, 0.0);
+ ff_amf_write_number(&p, ++rt->nb_invokes);
ff_amf_write_null(&p);
ff_amf_write_string(&p, rt->playpath);
ff_amf_write_string(&p, "live");
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ return rtmp_send_packet(rt, &pkt, 1);
+}
+
+/**
+ * Generate ping reply and send it to the server.
+ */
+static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if (ppkt->data_size < 6) {
+ av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n",
+ ppkt->data_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING,
+ ppkt->timestamp + 1, 6)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be16(&p, 7);
+ bytestream_put_be32(&p, AV_RB32(ppkt->data+2));
+
+ return rtmp_send_packet(rt, &pkt, 0);
+}
+
+/**
+ * Generate SWF verification message and send it to the server.
+ */
+static int gen_swf_verification(URLContext *s, RTMPContext *rt)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ av_log(s, AV_LOG_DEBUG, "Sending SWF verification...\n");
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING,
+ 0, 44)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be16(&p, 27);
+ memcpy(p, rt->swfverification, 42);
+
+ return rtmp_send_packet(rt, &pkt, 0);
+}
+
+/**
+ * Generate server bandwidth message and send it to the server.
+ */
+static int gen_server_bw(URLContext *s, RTMPContext *rt)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_SERVER_BW,
+ 0, 4)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->server_bw);
+
+ return rtmp_send_packet(rt, &pkt, 0);
+}
+
+/**
+ * Generate check bandwidth message and send it to the server.
+ */
+static int gen_check_bw(URLContext *s, RTMPContext *rt)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 21)) < 0)
+ return ret;
+
+ p = pkt.data;
+ ff_amf_write_string(&p, "_checkbw");
+ ff_amf_write_number(&p, ++rt->nb_invokes);
+ ff_amf_write_null(&p);
+
+ return rtmp_send_packet(rt, &pkt, 1);
+}
+
+/**
+ * Generate report on bytes read so far and send it to the server.
+ */
+static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ,
+ ts, 4)) < 0)
+ return ret;
+
+ p = pkt.data;
+ bytestream_put_be32(&p, rt->bytes_read);
+
+ return rtmp_send_packet(rt, &pkt, 0);
+}
+
+static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt,
+ const char *subscribe)
+{
+ RTMPPacket pkt;
+ uint8_t *p;
+ int ret;
+
+ if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
+ 0, 27 + strlen(subscribe))) < 0)
+ return ret;
+
+ p = pkt.data;
+ ff_amf_write_string(&p, "FCSubscribe");
+ ff_amf_write_number(&p, ++rt->nb_invokes);
+ ff_amf_write_null(&p);
+ ff_amf_write_string(&p, subscribe);
+
+ return rtmp_send_packet(rt, &pkt, 1);
+}
+
+int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap,
+ const uint8_t *key, int keylen, uint8_t *dst)
+{
+ struct AVSHA *sha;
+ uint8_t hmac_buf[64+32] = {0};
+ int i;
+
+ sha = av_sha_alloc();
+ if (!sha)
+ return AVERROR(ENOMEM);
+
+ if (keylen < 64) {
+ memcpy(hmac_buf, key, keylen);
+ } else {
+ av_sha_init(sha, 256);
+ av_sha_update(sha,key, keylen);
+ av_sha_final(sha, hmac_buf);
+ }
+ for (i = 0; i < 64; i++)
+ hmac_buf[i] ^= HMAC_IPAD_VAL;
+
+ av_sha_init(sha, 256);
+ av_sha_update(sha, hmac_buf, 64);
+ if (gap <= 0) {
+ av_sha_update(sha, src, len);
+ } else { //skip 32 bytes used for storing digest
+ av_sha_update(sha, src, gap);
+ av_sha_update(sha, src + gap + 32, len - gap - 32);
+ }
+ av_sha_final(sha, hmac_buf + 64);
+
+ for (i = 0; i < 64; i++)
+ hmac_buf[i] ^= HMAC_IPAD_VAL ^ HMAC_OPAD_VAL; //reuse XORed key for opad
+ av_sha_init(sha, 256);
+ av_sha_update(sha, hmac_buf, 64+32);
+ av_sha_final(sha, dst);
+
+ av_free(sha);
+
+ return 0;
+}
+
+int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val,
+ int add_val)
+{
+ int i, digest_pos = 0;
+
+ for (i = 0; i < 4; i++)
+ digest_pos += buf[i + off];
+ digest_pos = digest_pos % mod_val + add_val;
+
+ return digest_pos;
+}
+
+/**
+ * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest
+ * will be stored) into that packet.
+ *
+ * @param buf handshake data (1536 bytes)
+ * @param encrypted use an encrypted connection (RTMPE)
+ * @return offset to the digest inside input data
+ */
+static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted)
+{
+ int ret, digest_pos;
+
+ if (encrypted)
+ digest_pos = ff_rtmp_calc_digest_pos(buf, 772, 728, 776);
+ else
+ digest_pos = ff_rtmp_calc_digest_pos(buf, 8, 728, 12);
+
+ ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
+ rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN,
+ buf + digest_pos);
+ if (ret < 0)
+ return ret;
+
+ return digest_pos;
+}
+
+/**
+ * Verify that the received server response has the expected digest value.
+ *
+ * @param buf handshake data received from the server (1536 bytes)
+ * @param off position to search digest offset from
+ * @return 0 if digest is valid, digest position otherwise
+ */
+static int rtmp_validate_digest(uint8_t *buf, int off)
+{
+ uint8_t digest[32];
+ int ret, digest_pos;
+
+ digest_pos = ff_rtmp_calc_digest_pos(buf, off, 728, off + 4);
+
+ ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
+ rtmp_server_key, SERVER_KEY_OPEN_PART_LEN,
+ digest);
+ if (ret < 0)
+ return ret;
+
+ if (!memcmp(digest, buf + digest_pos, 32))
+ return digest_pos;
+ return 0;
+}
+
+static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt,
+ uint8_t *buf)
+{
+ uint8_t *p;
+ int ret;
+
+ if (rt->swfhash_len != 32) {
+ av_log(s, AV_LOG_ERROR,
+ "Hash of the decompressed SWF file is not 32 bytes long.\n");
+ return AVERROR(EINVAL);
+ }
+
+ p = &rt->swfverification[0];
+ bytestream_put_byte(&p, 1);
+ bytestream_put_byte(&p, 1);
+ bytestream_put_be32(&p, rt->swfsize);
+ bytestream_put_be32(&p, rt->swfsize);
+
+ if ((ret = ff_rtmp_calc_digest(rt->swfhash, 32, 0, buf, 32, p)) < 0)
+ return ret;
+
+ return 0;
+}
+
+#if CONFIG_ZLIB
+static int rtmp_uncompress_swfplayer(uint8_t *in_data, int64_t in_size,
+ uint8_t **out_data, int64_t *out_size)
+{
+ z_stream zs = { 0 };
+ void *ptr;
+ int size;
+ int ret = 0;
+
+ zs.avail_in = in_size;
+ zs.next_in = in_data;
+ ret = inflateInit(&zs);
+ if (ret != Z_OK)
+ return AVERROR_UNKNOWN;
+
+ do {
+ uint8_t tmp_buf[16384];
+
+ zs.avail_out = sizeof(tmp_buf);
+ zs.next_out = tmp_buf;
+
+ ret = inflate(&zs, Z_NO_FLUSH);
+ if (ret != Z_OK && ret != Z_STREAM_END) {
+ ret = AVERROR_UNKNOWN;
+ goto fail;
+ }
+
+ size = sizeof(tmp_buf) - zs.avail_out;
+ if (!(ptr = av_realloc(*out_data, *out_size + size))) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ *out_data = ptr;
+
+ memcpy(*out_data + *out_size, tmp_buf, size);
+ *out_size += size;
+ } while (zs.avail_out == 0);
+
+fail:
+ inflateEnd(&zs);
+ return ret;
+}
+#endif
+
+static int rtmp_calc_swfhash(URLContext *s)
+{
+ RTMPContext *rt = s->priv_data;
+ uint8_t *in_data = NULL, *out_data = NULL, *swfdata;
+ int64_t in_size, out_size;
+ URLContext *stream;
+ char swfhash[32];
+ int swfsize;
+ int ret = 0;
+
+ /* Get the SWF player file. */
+ if ((ret = ffurl_open(&stream, rt->swfverify, AVIO_FLAG_READ,
+ &s->interrupt_callback, NULL)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Cannot open connection %s.\n", rt->swfverify);
+ goto fail;
+ }
+
+ if ((in_size = ffurl_seek(stream, 0, AVSEEK_SIZE)) < 0) {
+ ret = AVERROR(EIO);
+ goto fail;
+ }
+
+ if (!(in_data = av_malloc(in_size))) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ if ((ret = ffurl_read_complete(stream, in_data, in_size)) < 0)
+ goto fail;
+
+ if (in_size < 3) {
+ ret = AVERROR_INVALIDDATA;
+ goto fail;
+ }
+
+ if (!memcmp(in_data, "CWS", 3)) {
+ /* Decompress the SWF player file using Zlib. */
+ if (!(out_data = av_malloc(8))) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ *in_data = 'F'; // magic stuff
+ memcpy(out_data, in_data, 8);
+ out_size = 8;
+
+#if CONFIG_ZLIB
+ if ((ret = rtmp_uncompress_swfplayer(in_data + 8, in_size - 8,
+ &out_data, &out_size)) < 0)
+ goto fail;
+#else
+ av_log(s, AV_LOG_ERROR,
+ "Zlib is required for decompressing the SWF player file.\n");
+ ret = AVERROR(EINVAL);
+ goto fail;
+#endif
+ swfsize = out_size;
+ swfdata = out_data;
+ } else {
+ swfsize = in_size;
+ swfdata = in_data;
+ }
+
+ /* Compute the SHA256 hash of the SWF player file. */
+ if ((ret = ff_rtmp_calc_digest(swfdata, swfsize, 0,
+ "Genuine Adobe Flash Player 001", 30,
+ swfhash)) < 0)
+ goto fail;
+
+ /* Set SWFVerification parameters. */
+ av_opt_set_bin(rt, "rtmp_swfhash", swfhash, 32, 0);
+ rt->swfsize = swfsize;
+
+fail:
+ av_freep(&in_data);
+ av_freep(&out_data);
+ ffurl_close(stream);
+ return ret;
+}
+
+/**
+ * Perform handshake with the server by means of exchanging pseudorandom data
+ * signed with HMAC-SHA2 digest.
+ *
+ * @return 0 if handshake succeeds, negative value otherwise
+ */
+static int rtmp_handshake(URLContext *s, RTMPContext *rt)
+{
+ AVLFG rnd;
+ uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = {
+ 3, // unencrypted data
+ 0, 0, 0, 0, // client uptime
+ RTMP_CLIENT_VER1,
+ RTMP_CLIENT_VER2,
+ RTMP_CLIENT_VER3,
+ RTMP_CLIENT_VER4,
+ };
+ uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE];
+ uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1];
+ int i;
+ int server_pos, client_pos;
+ uint8_t digest[32], signature[32];
+ int ret, type = 0;
+
+ av_log(s, AV_LOG_DEBUG, "Handshaking...\n");
+
+ av_lfg_init(&rnd, 0xDEADC0DE);
+ // generate handshake packet - 1536 bytes of pseudorandom data
+ for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++)
+ tosend[i] = av_lfg_get(&rnd) >> 24;
+
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* When the client wants to use RTMPE, we have to change the command
+ * byte to 0x06 which means to use encrypted data and we have to set
+ * the flash version to at least 9.0.115.0. */
+ tosend[0] = 6;
+ tosend[5] = 128;
+ tosend[6] = 0;
+ tosend[7] = 3;
+ tosend[8] = 2;
+
+ /* Initialize the Diffie-Hellmann context and generate the public key
+ * to send to the server. */
+ if ((ret = ff_rtmpe_gen_pub_key(rt->stream, tosend + 1)) < 0)
+ return ret;
+ }
+
+ client_pos = rtmp_handshake_imprint_with_digest(tosend + 1, rt->encrypted);
+ if (client_pos < 0)
+ return client_pos;
+
+ if ((ret = ffurl_write(rt->stream, tosend,
+ RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Cannot write RTMP handshake request\n");
+ return ret;
+ }
+
+ if ((ret = ffurl_read_complete(rt->stream, serverdata,
+ RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
+ return ret;
+ }
+
+ if ((ret = ffurl_read_complete(rt->stream, clientdata,
+ RTMP_HANDSHAKE_PACKET_SIZE)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
+ return ret;
+ }
+
+ av_log(s, AV_LOG_DEBUG, "Type answer %d\n", serverdata[0]);
+ av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n",
+ serverdata[5], serverdata[6], serverdata[7], serverdata[8]);
+
+ if (rt->is_input && serverdata[5] >= 3) {
+ server_pos = rtmp_validate_digest(serverdata + 1, 772);
+ if (server_pos < 0)
+ return server_pos;
+
+ if (!server_pos) {
+ type = 1;
+ server_pos = rtmp_validate_digest(serverdata + 1, 8);
+ if (server_pos < 0)
+ return server_pos;
+
+ if (!server_pos) {
+ av_log(s, AV_LOG_ERROR, "Server response validating failed\n");
+ return AVERROR(EIO);
+ }
+ }
+
+ /* Generate SWFVerification token (SHA256 HMAC hash of decompressed SWF,
+ * key are the last 32 bytes of the server handshake. */
+ if (rt->swfsize) {
+ if ((ret = rtmp_calc_swf_verification(s, rt, serverdata + 1 +
+ RTMP_HANDSHAKE_PACKET_SIZE - 32)) < 0)
+ return ret;
+ }
+
+ ret = ff_rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
+ rtmp_server_key, sizeof(rtmp_server_key),
+ digest);
+ if (ret < 0)
+ return ret;
+
+ ret = ff_rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE - 32,
+ 0, digest, 32, signature);
+ if (ret < 0)
+ return ret;
+
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* Compute the shared secret key sent by the server and initialize
+ * the RC4 encryption. */
+ if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
+ tosend + 1, type)) < 0)
+ return ret;
+
+ /* Encrypt the signature received by the server. */
+ ff_rtmpe_encrypt_sig(rt->stream, signature, digest, serverdata[0]);
+ }
+
+ if (memcmp(signature, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
+ av_log(s, AV_LOG_ERROR, "Signature mismatch\n");
+ return AVERROR(EIO);
+ }
+
+ for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
+ tosend[i] = av_lfg_get(&rnd) >> 24;
+ ret = ff_rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
+ rtmp_player_key, sizeof(rtmp_player_key),
+ digest);
+ if (ret < 0)
+ return ret;
+
+ ret = ff_rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
+ digest, 32,
+ tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
+ if (ret < 0)
+ return ret;
+
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* Encrypt the signature to be send to the server. */
+ ff_rtmpe_encrypt_sig(rt->stream, tosend +
+ RTMP_HANDSHAKE_PACKET_SIZE - 32, digest,
+ serverdata[0]);
+ }
+
+ // write reply back to the server
+ if ((ret = ffurl_write(rt->stream, tosend,
+ RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
+ return ret;
+
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* Set RC4 keys for encryption and update the keystreams. */
+ if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
+ return ret;
+ }
+ } else {
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* Compute the shared secret key sent by the server and initialize
+ * the RC4 encryption. */
+ if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
+ tosend + 1, 1)) < 0)
+ return ret;
+
+ if (serverdata[0] == 9) {
+ /* Encrypt the signature received by the server. */
+ ff_rtmpe_encrypt_sig(rt->stream, signature, digest,
+ serverdata[0]);
+ }
+ }
+
+ if ((ret = ffurl_write(rt->stream, serverdata + 1,
+ RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
+ return ret;
+
+ if (rt->encrypted && CONFIG_FFRTMPCRYPT_PROTOCOL) {
+ /* Set RC4 keys for encryption and update the keystreams. */
+ if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int rtmp_receive_hs_packet(RTMPContext* rt, uint32_t *first_int,
+ uint32_t *second_int, char *arraydata,
+ int size)
+{
+ int inoutsize;
+
+ inoutsize = ffurl_read_complete(rt->stream, arraydata,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (inoutsize <= 0)
+ return AVERROR(EIO);
+ if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
+ av_log(rt, AV_LOG_ERROR, "Erroneous Message size %d"
+ " not following standard\n", (int)inoutsize);
+ return AVERROR(EINVAL);
+ }
+
+ *first_int = AV_RB32(arraydata);
+ *second_int = AV_RB32(arraydata + 4);
+ return 0;
+}
+
+static int rtmp_send_hs_packet(RTMPContext* rt, uint32_t first_int,
+ uint32_t second_int, char *arraydata, int size)
+{
+ int inoutsize;
+
+ AV_WB32(arraydata, first_int);
+ AV_WB32(arraydata + 4, first_int);
+ inoutsize = ffurl_write(rt->stream, arraydata,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
+ av_log(rt, AV_LOG_ERROR, "Unable to write answer\n");
+ return AVERROR(EIO);
+ }
+
+ return 0;
+}
+
+/**
+ * rtmp handshake server side
+ */
+static int rtmp_server_handshake(URLContext *s, RTMPContext *rt)
+{
+ uint8_t buffer[RTMP_HANDSHAKE_PACKET_SIZE];
+ uint32_t hs_epoch;
+ uint32_t hs_my_epoch;
+ uint8_t hs_c1[RTMP_HANDSHAKE_PACKET_SIZE];
+ uint8_t hs_s1[RTMP_HANDSHAKE_PACKET_SIZE];
+ uint32_t zeroes;
+ uint32_t temp = 0;
+ int randomidx = 0;
+ int inoutsize = 0;
+ int ret;
+
+ inoutsize = ffurl_read_complete(rt->stream, buffer, 1); // Receive C0
+ if (inoutsize <= 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to read handshake\n");
+ return AVERROR(EIO);
+ }
+ // Check Version
+ if (buffer[0] != 3) {
+ av_log(s, AV_LOG_ERROR, "RTMP protocol version mismatch\n");
+ return AVERROR(EIO);
+ }
+ if (ffurl_write(rt->stream, buffer, 1) <= 0) { // Send S0
+ av_log(s, AV_LOG_ERROR,
+ "Unable to write answer - RTMP S0\n");
+ return AVERROR(EIO);
+ }
+ /* Receive C1 */
+ ret = rtmp_receive_hs_packet(rt, &hs_epoch, &zeroes, hs_c1,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (ret) {
+ av_log(s, AV_LOG_ERROR, "RTMP Handshake C1 Error\n");
+ return ret;
+ }
+ if (zeroes)
+ av_log(s, AV_LOG_WARNING, "Erroneous C1 Message zero != 0\n");
+ /* Send S1 */
+ /* By now same epoch will be sent */
+ hs_my_epoch = hs_epoch;
+ /* Generate random */
+ for (randomidx = 8; randomidx < (RTMP_HANDSHAKE_PACKET_SIZE);
+ randomidx += 4)
+ AV_WB32(hs_s1 + randomidx, av_get_random_seed());
+
+ ret = rtmp_send_hs_packet(rt, hs_my_epoch, 0, hs_s1,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (ret) {
+ av_log(s, AV_LOG_ERROR, "RTMP Handshake S1 Error\n");
+ return ret;
+ }
+ /* Send S2 */
+ ret = rtmp_send_hs_packet(rt, hs_epoch, 0, hs_c1,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (ret) {
+ av_log(s, AV_LOG_ERROR, "RTMP Handshake S2 Error\n");
+ return ret;
+ }
+ /* Receive C2 */
+ ret = rtmp_receive_hs_packet(rt, &temp, &zeroes, buffer,
+ RTMP_HANDSHAKE_PACKET_SIZE);
+ if (ret) {
+ av_log(s, AV_LOG_ERROR, "RTMP Handshake C2 Error\n");
+ return ret;
+ }
+ if (temp != hs_my_epoch)
+ av_log(s, AV_LOG_WARNING,
+ "Erroneous C2 Message epoch does not match up with C1 epoch\n");
+ if (memcmp(buffer + 8, hs_s1 + 8,
+ RTMP_HANDSHAKE_PACKET_SIZE - 8))
+ av_log(s, AV_LOG_WARNING,
+ "Erroneous C2 Message random does not match up\n");
+
+ return 0;
+}
+
+static int handle_chunk_size(URLContext *s, RTMPPacket *pkt)
+{
+ RTMPContext *rt = s->priv_data;
+ int ret;
+
+ if (pkt->data_size < 4) {
+ av_log(s, AV_LOG_ERROR,
+ "Too short chunk size change packet (%d)\n",
+ pkt->data_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (!rt->is_input) {
+ /* Send the same chunk size change packet back to the server,
+ * setting the outgoing chunk size to the same as the incoming one. */
+ if ((ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
+ rt->prev_pkt[1])) < 0)
+ return ret;
+ rt->out_chunk_size = AV_RB32(pkt->data);
+ }
+
+ rt->in_chunk_size = AV_RB32(pkt->data);
+ if (rt->in_chunk_size <= 0) {
+ av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n",
+ rt->in_chunk_size);
+ return AVERROR_INVALIDDATA;
+ }
+ av_log(s, AV_LOG_DEBUG, "New incoming chunk size = %d\n",
+ rt->in_chunk_size);
+
+ return 0;
+}
+
+static int handle_ping(URLContext *s, RTMPPacket *pkt)
+{
+ RTMPContext *rt = s->priv_data;
+ int t, ret;
+
+ if (pkt->data_size < 2) {
+ av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n",
+ pkt->data_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ t = AV_RB16(pkt->data);
+ if (t == 6) {
+ if ((ret = gen_pong(s, rt, pkt)) < 0)
+ return ret;
+ } else if (t == 26) {
+ if (rt->swfsize) {
+ if ((ret = gen_swf_verification(s, rt)) < 0)
+ return ret;
+ } else {
+ av_log(s, AV_LOG_WARNING, "Ignoring SWFVerification request.\n");
+ }
+ }
+
+ return 0;
+}
+
+static int handle_client_bw(URLContext *s, RTMPPacket *pkt)
+{
+ RTMPContext *rt = s->priv_data;
+
+ if (pkt->data_size < 4) {
+ av_log(s, AV_LOG_ERROR,
+ "Client bandwidth report packet is less than 4 bytes long (%d)\n",
+ pkt->data_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ rt->client_report_size = AV_RB32(pkt->data);
+ if (rt->client_report_size <= 0) {
+ av_log(s, AV_LOG_ERROR, "Incorrect client bandwidth %d\n",
+ rt->client_report_size);
+ return AVERROR_INVALIDDATA;
+
+ }
+ av_log(s, AV_LOG_DEBUG, "Client bandwidth = %d\n", rt->client_report_size);
+ rt->client_report_size >>= 1;
+
+ return 0;
}
-/**
- * Generate ping reply and send it to the server.
- */
-static void gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
+static int handle_server_bw(URLContext *s, RTMPPacket *pkt)
{
- RTMPPacket pkt;
- uint8_t *p;
+ RTMPContext *rt = s->priv_data;
- ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, ppkt->timestamp + 1, 6);
- p = pkt.data;
- bytestream_put_be16(&p, 7);
- bytestream_put_be32(&p, AV_RB32(ppkt->data+2));
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
+ if (pkt->data_size < 4) {
+ av_log(s, AV_LOG_ERROR,
+ "Too short server bandwidth report packet (%d)\n",
+ pkt->data_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ rt->server_bw = AV_RB32(pkt->data);
+ if (rt->server_bw <= 0) {
+ av_log(s, AV_LOG_ERROR, "Incorrect server bandwidth %d\n",
+ rt->server_bw);
+ return AVERROR_INVALIDDATA;
+ }
+ av_log(s, AV_LOG_DEBUG, "Server bandwidth = %d\n", rt->server_bw);
+
+ return 0;
}
-/**
- * Generate report on bytes read so far and send it to the server.
- */
-static void gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
+static int handle_invoke_error(URLContext *s, RTMPPacket *pkt)
{
- RTMPPacket pkt;
- uint8_t *p;
+ const uint8_t *data_end = pkt->data + pkt->data_size;
+ char *tracked_method = NULL;
+ int level = AV_LOG_ERROR;
+ uint8_t tmpstr[256];
+ int ret;
- ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ, ts, 4);
- p = pkt.data;
- bytestream_put_be32(&p, rt->bytes_read);
- ff_rtmp_packet_write(rt->stream, &pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&pkt);
-}
+ if ((ret = find_tracked_method(s, pkt, 9, &tracked_method)) < 0)
+ return ret;
+
+ if (!ff_amf_get_field_value(pkt->data + 9, data_end,
+ "description", tmpstr, sizeof(tmpstr))) {
+ if (tracked_method && (!strcmp(tracked_method, "_checkbw") ||
+ !strcmp(tracked_method, "releaseStream") ||
+ !strcmp(tracked_method, "FCSubscribe") ||
+ !strcmp(tracked_method, "FCPublish"))) {
+ /* Gracefully ignore Adobe-specific historical artifact errors. */
+ level = AV_LOG_WARNING;
+ ret = 0;
+ } else
+ ret = -1;
+ av_log(s, level, "Server error: %s\n", tmpstr);
+ }
-//TODO: Move HMAC code somewhere. Eventually.
-#define HMAC_IPAD_VAL 0x36
-#define HMAC_OPAD_VAL 0x5C
+ av_free(tracked_method);
+ return ret;
+}
-/**
- * Calculate HMAC-SHA2 digest for RTMP handshake packets.
- *
- * @param src input buffer
- * @param len input buffer length (should be 1536)
- * @param gap offset in buffer where 32 bytes should not be taken into account
- * when calculating digest (since it will be used to store that digest)
- * @param key digest key
- * @param keylen digest key length
- * @param dst buffer where calculated digest will be stored (32 bytes)
- */
-static void rtmp_calc_digest(const uint8_t *src, int len, int gap,
- const uint8_t *key, int keylen, uint8_t *dst)
+static int send_invoke_response(URLContext *s, RTMPPacket *pkt)
{
- struct AVSHA *sha;
- uint8_t hmac_buf[64+32] = {0};
- int i;
-
- sha = av_mallocz(av_sha_size);
+ RTMPContext *rt = s->priv_data;
+ double seqnum;
+ char filename[64];
+ char command[64];
+ char statusmsg[128];
+ int stringlen;
+ char *pchar;
+ const uint8_t *p = pkt->data;
+ uint8_t *pp = NULL;
+ RTMPPacket spkt = { 0 };
+ GetByteContext gbc;
+ int ret;
- if (keylen < 64) {
- memcpy(hmac_buf, key, keylen);
- } else {
- av_sha_init(sha, 256);
- av_sha_update(sha,key, keylen);
- av_sha_final(sha, hmac_buf);
+ bytestream2_init(&gbc, p, pkt->data_size);
+ if (ff_amf_read_string(&gbc, command, sizeof(command),
+ &stringlen)) {
+ av_log(s, AV_LOG_ERROR, "Error in PT_INVOKE\n");
+ return AVERROR_INVALIDDATA;
}
- for (i = 0; i < 64; i++)
- hmac_buf[i] ^= HMAC_IPAD_VAL;
- av_sha_init(sha, 256);
- av_sha_update(sha, hmac_buf, 64);
- if (gap <= 0) {
- av_sha_update(sha, src, len);
- } else { //skip 32 bytes used for storing digest
- av_sha_update(sha, src, gap);
- av_sha_update(sha, src + gap + 32, len - gap - 32);
+ ret = ff_amf_read_number(&gbc, &seqnum);
+ if (ret)
+ return ret;
+ ret = ff_amf_read_null(&gbc);
+ if (ret)
+ return ret;
+ if (!strcmp(command, "FCPublish") ||
+ !strcmp(command, "publish")) {
+ ret = ff_amf_read_string(&gbc, filename,
+ sizeof(filename), &stringlen);
+ // check with url
+ if (s->filename) {
+ pchar = strrchr(s->filename, '/');
+ if (!pchar) {
+ av_log(s, AV_LOG_WARNING,
+ "Unable to find / in url %s, bad format\n",
+ s->filename);
+ pchar = s->filename;
+ }
+ pchar++;
+ if (strcmp(pchar, filename))
+ av_log(s, AV_LOG_WARNING, "Unexpected stream %s, expecting"
+ " %s\n", filename, pchar);
+ }
+ rt->state = STATE_RECEIVING;
}
- av_sha_final(sha, hmac_buf + 64);
- for (i = 0; i < 64; i++)
- hmac_buf[i] ^= HMAC_IPAD_VAL ^ HMAC_OPAD_VAL; //reuse XORed key for opad
- av_sha_init(sha, 256);
- av_sha_update(sha, hmac_buf, 64+32);
- av_sha_final(sha, dst);
+ if (!strcmp(command, "FCPublish")) {
+ if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_INVOKE, 0,
+ RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
+ return ret;
+ }
+ pp = spkt.data;
+ ff_amf_write_string(&pp, "onFCPublish");
+ } else if (!strcmp(command, "publish")) {
+ PutByteContext pbc;
+ // Send Stream Begin 1
+ if ((ret = ff_rtmp_packet_create(&spkt, RTMP_NETWORK_CHANNEL,
+ RTMP_PT_PING, 0, 6)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
+ return ret;
+ }
+ pp = spkt.data;
+ bytestream2_init_writer(&pbc, pp, spkt.data_size);
+ bytestream2_put_be16(&pbc, 0); // 0 -> Stream Begin
+ bytestream2_put_be32(&pbc, rt->nb_streamid);
+ ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&spkt);
+ if (ret < 0)
+ return ret;
+
+ // Send onStatus(NetStream.Publish.Start)
+ if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_INVOKE, 0,
+ RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
+ return ret;
+ }
+ spkt.extra = pkt->extra;
+ pp = spkt.data;
+ ff_amf_write_string(&pp, "onStatus");
+ ff_amf_write_number(&pp, 0);
+ ff_amf_write_null(&pp);
+
+ ff_amf_write_object_start(&pp);
+ ff_amf_write_field_name(&pp, "level");
+ ff_amf_write_string(&pp, "status");
+ ff_amf_write_field_name(&pp, "code");
+ ff_amf_write_string(&pp, "NetStream.Publish.Start");
+ ff_amf_write_field_name(&pp, "description");
+ snprintf(statusmsg, sizeof(statusmsg),
+ "%s is now published", filename);
+ ff_amf_write_string(&pp, statusmsg);
+ ff_amf_write_field_name(&pp, "details");
+ ff_amf_write_string(&pp, filename);
+ ff_amf_write_field_name(&pp, "clientid");
+ snprintf(statusmsg, sizeof(statusmsg), "%s", LIBAVFORMAT_IDENT);
+ ff_amf_write_string(&pp, statusmsg);
+ ff_amf_write_object_end(&pp);
- av_free(sha);
+ } else {
+ if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
+ RTMP_PT_INVOKE, 0,
+ RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
+ return ret;
+ }
+ pp = spkt.data;
+ ff_amf_write_string(&pp, "_result");
+ ff_amf_write_number(&pp, seqnum);
+ ff_amf_write_null(&pp);
+ if (!strcmp(command, "createStream")) {
+ rt->nb_streamid++;
+ if (rt->nb_streamid == 0 || rt->nb_streamid == 2)
+ rt->nb_streamid++; /* Values 0 and 2 are reserved */
+ ff_amf_write_number(&pp, rt->nb_streamid);
+ /* By now we don't control which streams are removed in
+ * deleteStream. There is no stream creation control
+ * if a client creates more than 2^32 - 2 streams. */
+ }
+ }
+ spkt.data_size = pp - spkt.data;
+ ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
+ rt->prev_pkt[1]);
+ ff_rtmp_packet_destroy(&spkt);
+ return ret;
}
-/**
- * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest
- * will be stored) into that packet.
- *
- * @param buf handshake data (1536 bytes)
- * @return offset to the digest inside input data
- */
-static int rtmp_handshake_imprint_with_digest(uint8_t *buf)
+static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
{
- int i, digest_pos = 0;
+ RTMPContext *rt = s->priv_data;
+ char *tracked_method = NULL;
+ int ret = 0;
- for (i = 8; i < 12; i++)
- digest_pos += buf[i];
- digest_pos = (digest_pos % 728) + 12;
+ if ((ret = find_tracked_method(s, pkt, 10, &tracked_method)) < 0)
+ return ret;
- rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
- rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN,
- buf + digest_pos);
- return digest_pos;
-}
+ if (!tracked_method) {
+ /* Ignore this reply when the current method is not tracked. */
+ return ret;
+ }
-/**
- * Verify that the received server response has the expected digest value.
- *
- * @param buf handshake data received from the server (1536 bytes)
- * @param off position to search digest offset from
- * @return 0 if digest is valid, digest position otherwise
- */
-static int rtmp_validate_digest(uint8_t *buf, int off)
-{
- int i, digest_pos = 0;
- uint8_t digest[32];
+ if (!memcmp(tracked_method, "connect", 7)) {
+ if (!rt->is_input) {
+ if ((ret = gen_release_stream(s, rt)) < 0)
+ goto fail;
- for (i = 0; i < 4; i++)
- digest_pos += buf[i + off];
- digest_pos = (digest_pos % 728) + off + 4;
+ if ((ret = gen_fcpublish_stream(s, rt)) < 0)
+ goto fail;
+ } else {
+ if ((ret = gen_server_bw(s, rt)) < 0)
+ goto fail;
+ }
- rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
- rtmp_server_key, SERVER_KEY_OPEN_PART_LEN,
- digest);
- if (!memcmp(digest, buf + digest_pos, 32))
- return digest_pos;
- return 0;
+ if ((ret = gen_create_stream(s, rt)) < 0)
+ goto fail;
+
+ if (rt->is_input) {
+ /* Send the FCSubscribe command when the name of live
+ * stream is defined by the user or if it's a live stream. */
+ if (rt->subscribe) {
+ if ((ret = gen_fcsubscribe_stream(s, rt, rt->subscribe)) < 0)
+ goto fail;
+ } else if (rt->live == -1) {
+ if ((ret = gen_fcsubscribe_stream(s, rt, rt->playpath)) < 0)
+ goto fail;
+ }
+ }
+ } else if (!memcmp(tracked_method, "createStream", 12)) {
+ //extract a number from the result
+ if (pkt->data[10] || pkt->data[19] != 5 || pkt->data[20]) {
+ av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n");
+ } else {
+ rt->main_channel_id = av_int2double(AV_RB64(pkt->data + 21));
+ }
+
+ if (!rt->is_input) {
+ if ((ret = gen_publish(s, rt)) < 0)
+ goto fail;
+ } else {
+ if ((ret = gen_play(s, rt)) < 0)
+ goto fail;
+ if ((ret = gen_buffer_time(s, rt)) < 0)
+ goto fail;
+ }
+ }
+
+fail:
+ av_free(tracked_method);
+ return ret;
}
-/**
- * Perform handshake with the server by means of exchanging pseudorandom data
- * signed with HMAC-SHA2 digest.
- *
- * @return 0 if handshake succeeds, negative value otherwise
- */
-static int rtmp_handshake(URLContext *s, RTMPContext *rt)
+static int handle_invoke_status(URLContext *s, RTMPPacket *pkt)
{
- AVLFG rnd;
- uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = {
- 3, // unencrypted data
- 0, 0, 0, 0, // client uptime
- RTMP_CLIENT_VER1,
- RTMP_CLIENT_VER2,
- RTMP_CLIENT_VER3,
- RTMP_CLIENT_VER4,
- };
- uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE];
- uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1];
- int i;
- int server_pos, client_pos;
- uint8_t digest[32];
-
- av_log(s, AV_LOG_DEBUG, "Handshaking...\n");
+ RTMPContext *rt = s->priv_data;
+ const uint8_t *data_end = pkt->data + pkt->data_size;
+ const uint8_t *ptr = pkt->data + 11;
+ uint8_t tmpstr[256];
+ int i, t;
- av_lfg_init(&rnd, 0xDEADC0DE);
- // generate handshake packet - 1536 bytes of pseudorandom data
- for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++)
- tosend[i] = av_lfg_get(&rnd) >> 24;
- client_pos = rtmp_handshake_imprint_with_digest(tosend + 1);
+ for (i = 0; i < 2; i++) {
+ t = ff_amf_tag_size(ptr, data_end);
+ if (t < 0)
+ return 1;
+ ptr += t;
+ }
- ffurl_write(rt->stream, tosend, RTMP_HANDSHAKE_PACKET_SIZE + 1);
- i = ffurl_read_complete(rt->stream, serverdata, RTMP_HANDSHAKE_PACKET_SIZE + 1);
- if (i != RTMP_HANDSHAKE_PACKET_SIZE + 1) {
- av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
+ t = ff_amf_get_field_value(ptr, data_end, "level", tmpstr, sizeof(tmpstr));
+ if (!t && !strcmp(tmpstr, "error")) {
+ if (!ff_amf_get_field_value(ptr, data_end,
+ "description", tmpstr, sizeof(tmpstr)))
+ av_log(s, AV_LOG_ERROR, "Server error: %s\n", tmpstr);
return -1;
}
- i = ffurl_read_complete(rt->stream, clientdata, RTMP_HANDSHAKE_PACKET_SIZE);
- if (i != RTMP_HANDSHAKE_PACKET_SIZE) {
- av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
- return -1;
+
+ t = ff_amf_get_field_value(ptr, data_end, "code", tmpstr, sizeof(tmpstr));
+ if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING;
+ if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
+ if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
+ if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
+
+ return 0;
+}
+
+static int handle_invoke(URLContext *s, RTMPPacket *pkt)
+{
+ RTMPContext *rt = s->priv_data;
+ int ret = 0;
+
+ //TODO: check for the messages sent for wrong state?
+ if (!memcmp(pkt->data, "\002\000\006_error", 9)) {
+ if ((ret = handle_invoke_error(s, pkt)) < 0)
+ return ret;
+ } else if (!memcmp(pkt->data, "\002\000\007_result", 10)) {
+ if ((ret = handle_invoke_result(s, pkt)) < 0)
+ return ret;
+ } else if (!memcmp(pkt->data, "\002\000\010onStatus", 11)) {
+ if ((ret = handle_invoke_status(s, pkt)) < 0)
+ return ret;
+ } else if (!memcmp(pkt->data, "\002\000\010onBWDone", 11)) {
+ if ((ret = gen_check_bw(s, rt)) < 0)
+ return ret;
+ } else if (!memcmp(pkt->data, "\002\000\015releaseStream", 16) ||
+ !memcmp(pkt->data, "\002\000\011FCPublish", 12) ||
+ !memcmp(pkt->data, "\002\000\007publish", 10) ||
+ !memcmp(pkt->data, "\002\000\010_checkbw", 11) ||
+ !memcmp(pkt->data, "\002\000\014createStream", 15)) {
+ if (ret = send_invoke_response(s, pkt) < 0)
+ return ret;
}
- av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n",
- serverdata[5], serverdata[6], serverdata[7], serverdata[8]);
+ return ret;
+}
- if (rt->is_input && serverdata[5] >= 3) {
- server_pos = rtmp_validate_digest(serverdata + 1, 772);
- if (!server_pos) {
- server_pos = rtmp_validate_digest(serverdata + 1, 8);
- if (!server_pos) {
- av_log(s, AV_LOG_ERROR, "Server response validating failed\n");
- return -1;
- }
+static int handle_notify(URLContext *s, RTMPPacket *pkt) {
+ RTMPContext *rt = s->priv_data;
+ const uint8_t *p = NULL;
+ uint8_t *cp = NULL;
+ uint8_t commandbuffer[64];
+ char statusmsg[128];
+ int stringlen;
+ GetByteContext gbc;
+ PutByteContext pbc;
+ uint32_t ts;
+ int old_flv_size;
+ const uint8_t *datatowrite;
+ unsigned datatowritelength;
+
+ p = pkt->data;
+ bytestream2_init(&gbc, p, pkt->data_size);
+ if (ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer),
+ &stringlen))
+ return AVERROR_INVALIDDATA;
+ if (!strcmp(commandbuffer, "@setDataFrame")) {
+ datatowrite = gbc.buffer;
+ datatowritelength = bytestream2_get_bytes_left(&gbc);
+ if (ff_amf_read_string(&gbc, statusmsg,
+ sizeof(statusmsg), &stringlen))
+ return AVERROR_INVALIDDATA;
+ if (strcmp(statusmsg, "onMetaData")) {
+ av_log(s, AV_LOG_INFO, "Expecting onMetadata but got %s\n",
+ statusmsg);
+ return 0;
}
- rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
- rtmp_server_key, sizeof(rtmp_server_key),
- digest);
- rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE-32, 0,
- digest, 32,
- digest);
- if (memcmp(digest, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
- av_log(s, AV_LOG_ERROR, "Signature mismatch\n");
- return -1;
- }
+ /* Provide ECMAArray to flv */
+ ts = pkt->timestamp;
- for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
- tosend[i] = av_lfg_get(&rnd) >> 24;
- rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
- rtmp_player_key, sizeof(rtmp_player_key),
- digest);
- rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
- digest, 32,
- tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
+ // generate packet header and put data into buffer for FLV demuxer
+ if (rt->flv_off < rt->flv_size) {
+ old_flv_size = rt->flv_size;
+ rt->flv_size += datatowritelength + 15;
+ } else {
+ old_flv_size = 0;
+ rt->flv_size = datatowritelength + 15;
+ rt->flv_off = 0;
+ }
- // write reply back to the server
- ffurl_write(rt->stream, tosend, RTMP_HANDSHAKE_PACKET_SIZE);
- } else {
- ffurl_write(rt->stream, serverdata+1, RTMP_HANDSHAKE_PACKET_SIZE);
+ cp = av_realloc(rt->flv_data, rt->flv_size);
+ if (!cp)
+ return AVERROR(ENOMEM);
+ rt->flv_data = cp;
+ bytestream2_init_writer(&pbc, cp, rt->flv_size);
+ bytestream2_skip_p(&pbc, old_flv_size);
+ bytestream2_put_byte(&pbc, pkt->type);
+ bytestream2_put_be24(&pbc, datatowritelength);
+ bytestream2_put_be24(&pbc, ts);
+ bytestream2_put_byte(&pbc, ts >> 24);
+ bytestream2_put_be24(&pbc, 0);
+ bytestream2_put_buffer(&pbc, datatowrite, datatowritelength);
+ bytestream2_put_be32(&pbc, 0);
}
-
return 0;
}
*/
static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt)
{
- int i, t;
- const uint8_t *data_end = pkt->data + pkt->data_size;
+ int ret;
#ifdef DEBUG
ff_rtmp_packet_dump(s, pkt);
#endif
switch (pkt->type) {
+ case RTMP_PT_BYTES_READ:
+ av_dlog(s, "received bytes read report\n");
+ break;
case RTMP_PT_CHUNK_SIZE:
- if (pkt->data_size != 4) {
- av_log(s, AV_LOG_ERROR,
- "Chunk size change packet is not 4 bytes long (%d)\n", pkt->data_size);
- return -1;
- }
- if (!rt->is_input)
- ff_rtmp_packet_write(rt->stream, pkt, rt->chunk_size, rt->prev_pkt[1]);
- rt->chunk_size = AV_RB32(pkt->data);
- if (rt->chunk_size <= 0) {
- av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n", rt->chunk_size);
- return -1;
- }
- av_log(s, AV_LOG_DEBUG, "New chunk size = %d\n", rt->chunk_size);
+ if ((ret = handle_chunk_size(s, pkt)) < 0)
+ return ret;
break;
case RTMP_PT_PING:
- t = AV_RB16(pkt->data);
- if (t == 6)
- gen_pong(s, rt, pkt);
+ if ((ret = handle_ping(s, pkt)) < 0)
+ return ret;
break;
case RTMP_PT_CLIENT_BW:
- if (pkt->data_size < 4) {
- av_log(s, AV_LOG_ERROR,
- "Client bandwidth report packet is less than 4 bytes long (%d)\n",
- pkt->data_size);
- return -1;
- }
- av_log(s, AV_LOG_DEBUG, "Client bandwidth = %d\n", AV_RB32(pkt->data));
- rt->client_report_size = AV_RB32(pkt->data) >> 1;
+ if ((ret = handle_client_bw(s, pkt)) < 0)
+ return ret;
+ break;
+ case RTMP_PT_SERVER_BW:
+ if ((ret = handle_server_bw(s, pkt)) < 0)
+ return ret;
break;
case RTMP_PT_INVOKE:
- //TODO: check for the messages sent for wrong state?
- if (!memcmp(pkt->data, "\002\000\006_error", 9)) {
- uint8_t tmpstr[256];
-
- if (!ff_amf_get_field_value(pkt->data + 9, data_end,
- "description", tmpstr, sizeof(tmpstr)))
- av_log(s, AV_LOG_ERROR, "Server error: %s\n",tmpstr);
- return -1;
- } else if (!memcmp(pkt->data, "\002\000\007_result", 10)) {
- switch (rt->state) {
- case STATE_HANDSHAKED:
- if (!rt->is_input) {
- gen_release_stream(s, rt);
- gen_fcpublish_stream(s, rt);
- rt->state = STATE_RELEASING;
- } else {
- rt->state = STATE_CONNECTING;
- }
- gen_create_stream(s, rt);
- break;
- case STATE_FCPUBLISH:
- rt->state = STATE_CONNECTING;
- break;
- case STATE_RELEASING:
- rt->state = STATE_FCPUBLISH;
- /* hack for Wowza Media Server, it does not send result for
- * releaseStream and FCPublish calls */
- if (!pkt->data[10]) {
- int pkt_id = (int) av_int2dbl(AV_RB64(pkt->data + 11));
- if (pkt_id == 4)
- rt->state = STATE_CONNECTING;
- }
- if (rt->state != STATE_CONNECTING)
- break;
- case STATE_CONNECTING:
- //extract a number from the result
- if (pkt->data[10] || pkt->data[19] != 5 || pkt->data[20]) {
- av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n");
- } else {
- rt->main_channel_id = (int) av_int2dbl(AV_RB64(pkt->data + 21));
- }
- if (rt->is_input) {
- gen_play(s, rt);
- } else {
- gen_publish(s, rt);
- }
- rt->state = STATE_READY;
- break;
- }
- } else if (!memcmp(pkt->data, "\002\000\010onStatus", 11)) {
- const uint8_t* ptr = pkt->data + 11;
- uint8_t tmpstr[256];
-
- for (i = 0; i < 2; i++) {
- t = ff_amf_tag_size(ptr, data_end);
- if (t < 0)
- return 1;
- ptr += t;
- }
- t = ff_amf_get_field_value(ptr, data_end,
- "level", tmpstr, sizeof(tmpstr));
- if (!t && !strcmp(tmpstr, "error")) {
- if (!ff_amf_get_field_value(ptr, data_end,
- "description", tmpstr, sizeof(tmpstr)))
- av_log(s, AV_LOG_ERROR, "Server error: %s\n",tmpstr);
- return -1;
- }
- t = ff_amf_get_field_value(ptr, data_end,
- "code", tmpstr, sizeof(tmpstr));
- if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING;
- if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
- if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
- if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
- }
+ if ((ret = handle_invoke(s, pkt)) < 0)
+ return ret;
+ break;
+ case RTMP_PT_VIDEO:
+ case RTMP_PT_AUDIO:
+ case RTMP_PT_METADATA:
+ case RTMP_PT_NOTIFY:
+ /* Audio, Video and Metadata packets are parsed in get_packet() */
+ break;
+ default:
+ av_log(s, AV_LOG_VERBOSE, "Unknown packet type received 0x%02X\n", pkt->type);
break;
}
return 0;
return AVERROR_EOF;
for (;;) {
- RTMPPacket rpkt;
+ RTMPPacket rpkt = { 0 };
if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt,
- rt->chunk_size, rt->prev_pkt[0])) <= 0) {
+ rt->in_chunk_size, rt->prev_pkt[0])) <= 0) {
if (ret == 0) {
return AVERROR(EAGAIN);
} else {
rt->bytes_read += ret;
if (rt->bytes_read > rt->last_bytes_read + rt->client_report_size) {
av_log(s, AV_LOG_DEBUG, "Sending bytes read report\n");
- gen_bytes_read(s, rt, rpkt.timestamp + 1);
+ if ((ret = gen_bytes_read(s, rt, rpkt.timestamp + 1)) < 0)
+ return ret;
rt->last_bytes_read = rt->bytes_read;
}
ret = rtmp_parse_result(s, rt, &rpkt);
if (ret < 0) {//serious error in current packet
ff_rtmp_packet_destroy(&rpkt);
- return -1;
+ return ret;
}
if (rt->state == STATE_STOPPED) {
ff_rtmp_packet_destroy(&rpkt);
return AVERROR_EOF;
}
- if (for_header && (rt->state == STATE_PLAYING || rt->state == STATE_PUBLISHING)) {
+ if (for_header && (rt->state == STATE_PLAYING ||
+ rt->state == STATE_PUBLISHING ||
+ rt->state == STATE_RECEIVING)) {
ff_rtmp_packet_destroy(&rpkt);
return 0;
}
bytestream_put_be32(&p, 0);
ff_rtmp_packet_destroy(&rpkt);
return 0;
+ } else if (rpkt.type == RTMP_PT_NOTIFY) {
+ ret = handle_notify(s, &rpkt);
+ ff_rtmp_packet_destroy(&rpkt);
+ if (ret) {
+ av_log(s, AV_LOG_ERROR, "Handle notify error\n");
+ return ret;
+ }
+ return 0;
} else if (rpkt.type == RTMP_PT_METADATA) {
// we got raw FLV data, make it available for FLV demuxer
rt->flv_off = 0;
}
ff_rtmp_packet_destroy(&rpkt);
}
- return 0;
}
static int rtmp_close(URLContext *h)
{
RTMPContext *rt = h->priv_data;
+ int ret = 0;
if (!rt->is_input) {
rt->flv_data = NULL;
if (rt->out_pkt.data_size)
ff_rtmp_packet_destroy(&rt->out_pkt);
if (rt->state > STATE_FCPUBLISH)
- gen_fcunpublish_stream(h, rt);
+ ret = gen_fcunpublish_stream(h, rt);
}
if (rt->state > STATE_HANDSHAKED)
- gen_delete_stream(h, rt);
+ ret = gen_delete_stream(h, rt);
+ free_tracked_methods(rt);
av_freep(&rt->flv_data);
ffurl_close(rt->stream);
- av_free(rt);
- return 0;
+ return ret;
}
/**
*/
static int rtmp_open(URLContext *s, const char *uri, int flags)
{
- RTMPContext *rt;
+ RTMPContext *rt = s->priv_data;
char proto[8], hostname[256], path[1024], *fname;
+ char *old_app;
uint8_t buf[2048];
int port;
+ AVDictionary *opts = NULL;
int ret;
- rt = av_mallocz(sizeof(RTMPContext));
- if (!rt)
- return AVERROR(ENOMEM);
- s->priv_data = rt;
- rt->is_input = !(flags & AVIO_WRONLY);
+ if (rt->listen_timeout > 0)
+ rt->listen = 1;
+
+ rt->is_input = !(flags & AVIO_FLAG_WRITE);
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
path, sizeof(path), s->filename);
- if (port < 0)
- port = RTMP_DEFAULT_PORT;
- ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
+ if (rt->listen && strcmp(proto, "rtmp")) {
+ av_log(s, AV_LOG_ERROR, "rtmp_listen not available for %s\n",
+ proto);
+ return AVERROR(EINVAL);
+ }
+ if (!strcmp(proto, "rtmpt") || !strcmp(proto, "rtmpts")) {
+ if (!strcmp(proto, "rtmpts"))
+ av_dict_set(&opts, "ffrtmphttp_tls", "1", 1);
+
+ /* open the http tunneling connection */
+ ff_url_join(buf, sizeof(buf), "ffrtmphttp", NULL, hostname, port, NULL);
+ } else if (!strcmp(proto, "rtmps")) {
+ /* open the tls connection */
+ if (port < 0)
+ port = RTMPS_DEFAULT_PORT;
+ ff_url_join(buf, sizeof(buf), "tls", NULL, hostname, port, NULL);
+ } else if (!strcmp(proto, "rtmpe") || (!strcmp(proto, "rtmpte"))) {
+ if (!strcmp(proto, "rtmpte"))
+ av_dict_set(&opts, "ffrtmpcrypt_tunneling", "1", 1);
+
+ /* open the encrypted connection */
+ ff_url_join(buf, sizeof(buf), "ffrtmpcrypt", NULL, hostname, port, NULL);
+ rt->encrypted = 1;
+ } else {
+ /* open the tcp connection */
+ if (port < 0)
+ port = RTMP_DEFAULT_PORT;
+ if (rt->listen)
+ ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port,
+ "?listen&listen_timeout=%d",
+ rt->listen_timeout * 1000);
+ else
+ ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL);
+ }
- if (ffurl_open(&rt->stream, buf, AVIO_RDWR) < 0) {
- av_log(s, AV_LOG_ERROR, "Cannot open connection %s\n", buf);
+ if ((ret = ffurl_open(&rt->stream, buf, AVIO_FLAG_READ_WRITE,
+ &s->interrupt_callback, &opts)) < 0) {
+ av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf);
goto fail;
}
+ if (rt->swfverify) {
+ if ((ret = rtmp_calc_swfhash(s)) < 0)
+ goto fail;
+ }
+
rt->state = STATE_START;
- if (rtmp_handshake(s, rt))
- return -1;
+ if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0)
+ goto fail;
+ if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0)
+ goto fail;
- rt->chunk_size = 128;
+ rt->out_chunk_size = 128;
+ rt->in_chunk_size = 128; // Probably overwritten later
rt->state = STATE_HANDSHAKED;
+
+ // Keep the application name when it has been defined by the user.
+ old_app = rt->app;
+
+ rt->app = av_malloc(APP_MAX_LENGTH);
+ if (!rt->app) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
//extract "app" part from path
if (!strncmp(path, "/ondemand/", 10)) {
fname = path + 10;
memcpy(rt->app, "ondemand", 9);
} else {
- char *p = strchr(path + 1, '/');
+ char *next = *path ? path + 1 : path;
+ char *p = strchr(next, '/');
if (!p) {
- fname = path + 1;
+ fname = next;
rt->app[0] = '\0';
} else {
+ // make sure we do not mismatch a playpath for an application instance
char *c = strchr(p + 1, ':');
fname = strchr(p + 1, '/');
- if (!fname || c < fname) {
+ if (!fname || (c && c < fname)) {
fname = p + 1;
av_strlcpy(rt->app, path + 1, p - path);
} else {
}
}
}
- if (!strchr(fname, ':') &&
- (!strcmp(fname + strlen(fname) - 4, ".f4v") ||
- !strcmp(fname + strlen(fname) - 4, ".mp4"))) {
- memcpy(rt->playpath, "mp4:", 5);
- } else {
- rt->playpath[0] = 0;
+
+ if (old_app) {
+ // The name of application has been defined by the user, override it.
+ av_free(rt->app);
+ rt->app = old_app;
+ }
+
+ if (!rt->playpath) {
+ int len = strlen(fname);
+
+ rt->playpath = av_malloc(PLAYPATH_MAX_LENGTH);
+ if (!rt->playpath) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ if (!strchr(fname, ':') && len >= 4 &&
+ (!strcmp(fname + len - 4, ".f4v") ||
+ !strcmp(fname + len - 4, ".mp4"))) {
+ memcpy(rt->playpath, "mp4:", 5);
+ } else if (len >= 4 && !strcmp(fname + len - 4, ".flv")) {
+ fname[len - 4] = '\0';
+ } else {
+ rt->playpath[0] = 0;
+ }
+ strncat(rt->playpath, fname, PLAYPATH_MAX_LENGTH - 5);
+ }
+
+ if (!rt->tcurl) {
+ rt->tcurl = av_malloc(TCURL_MAX_LENGTH);
+ if (!rt->tcurl) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ ff_url_join(rt->tcurl, TCURL_MAX_LENGTH, proto, NULL, hostname,
+ port, "/%s", rt->app);
+ }
+
+ if (!rt->flashver) {
+ rt->flashver = av_malloc(FLASHVER_MAX_LENGTH);
+ if (!rt->flashver) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ if (rt->is_input) {
+ snprintf(rt->flashver, FLASHVER_MAX_LENGTH, "%s %d,%d,%d,%d",
+ RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1, RTMP_CLIENT_VER2,
+ RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
+ } else {
+ snprintf(rt->flashver, FLASHVER_MAX_LENGTH,
+ "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT);
+ }
}
- strncat(rt->playpath, fname, sizeof(rt->playpath) - 5);
rt->client_report_size = 1048576;
rt->bytes_read = 0;
rt->last_bytes_read = 0;
+ rt->server_bw = 2500000;
av_log(s, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n",
proto, path, rt->app, rt->playpath);
- gen_connect(s, rt, proto, hostname, port);
+ if (!rt->listen) {
+ if ((ret = gen_connect(s, rt)) < 0)
+ goto fail;
+ } else {
+ if (read_connect(s, s->priv_data) < 0)
+ goto fail;
+ rt->is_input = 1;
+ }
do {
ret = get_packet(s, 1);
rt->flv_size = 0;
rt->flv_data = NULL;
rt->flv_off = 0;
+ rt->skip_bytes = 13;
}
s->max_packet_size = rt->stream->max_packet_size;
return 0;
fail:
+ av_dict_free(&opts);
rtmp_close(s);
- return AVERROR(EIO);
+ return ret;
}
static int rtmp_read(URLContext *s, uint8_t *buf, int size)
int pktsize, pkttype;
uint32_t ts;
const uint8_t *buf_temp = buf;
-
- if (size < 11) {
- av_log(s, AV_LOG_DEBUG, "FLV packet too small %d\n", size);
- return 0;
- }
+ uint8_t c;
+ int ret;
do {
- if (!rt->flv_off) {
- //skip flv header
- if (buf_temp[0] == 'F' && buf_temp[1] == 'L' && buf_temp[2] == 'V') {
- buf_temp += 9 + 4;
- size_temp -= 9 + 4;
- }
+ if (rt->skip_bytes) {
+ int skip = FFMIN(rt->skip_bytes, size_temp);
+ buf_temp += skip;
+ size_temp -= skip;
+ rt->skip_bytes -= skip;
+ continue;
+ }
+
+ if (rt->flv_header_bytes < 11) {
+ const uint8_t *header = rt->flv_header;
+ int copy = FFMIN(11 - rt->flv_header_bytes, size_temp);
+ bytestream_get_buffer(&buf_temp, rt->flv_header + rt->flv_header_bytes, copy);
+ rt->flv_header_bytes += copy;
+ size_temp -= copy;
+ if (rt->flv_header_bytes < 11)
+ break;
- pkttype = bytestream_get_byte(&buf_temp);
- pktsize = bytestream_get_be24(&buf_temp);
- ts = bytestream_get_be24(&buf_temp);
- ts |= bytestream_get_byte(&buf_temp) << 24;
- bytestream_get_be24(&buf_temp);
- size_temp -= 11;
+ pkttype = bytestream_get_byte(&header);
+ pktsize = bytestream_get_be24(&header);
+ ts = bytestream_get_be24(&header);
+ ts |= bytestream_get_byte(&header) << 24;
+ bytestream_get_be24(&header);
rt->flv_size = pktsize;
//force 12bytes header
}
//this can be a big packet, it's better to send it right here
- ff_rtmp_packet_create(&rt->out_pkt, RTMP_SOURCE_CHANNEL, pkttype, ts, pktsize);
+ if ((ret = ff_rtmp_packet_create(&rt->out_pkt, RTMP_SOURCE_CHANNEL,
+ pkttype, ts, pktsize)) < 0)
+ return ret;
+
rt->out_pkt.extra = rt->main_channel_id;
rt->flv_data = rt->out_pkt.data;
if (rt->flv_size - rt->flv_off > size_temp) {
bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, size_temp);
rt->flv_off += size_temp;
+ size_temp = 0;
} else {
bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, rt->flv_size - rt->flv_off);
+ size_temp -= rt->flv_size - rt->flv_off;
rt->flv_off += rt->flv_size - rt->flv_off;
}
if (rt->flv_off == rt->flv_size) {
- bytestream_get_be32(&buf_temp);
+ rt->skip_bytes = 4;
- ff_rtmp_packet_write(rt->stream, &rt->out_pkt, rt->chunk_size, rt->prev_pkt[1]);
- ff_rtmp_packet_destroy(&rt->out_pkt);
+ if ((ret = rtmp_send_packet(rt, &rt->out_pkt, 0)) < 0)
+ return ret;
rt->flv_size = 0;
rt->flv_off = 0;
+ rt->flv_header_bytes = 0;
+ rt->flv_nb_packets++;
}
- } while (buf_temp - buf < size_temp);
+ } while (buf_temp - buf < size);
+
+ if (rt->flv_nb_packets < rt->flush_interval)
+ return size;
+ rt->flv_nb_packets = 0;
+
+ /* set stream into nonblocking mode */
+ rt->stream->flags |= AVIO_FLAG_NONBLOCK;
+
+ /* try to read one byte from the stream */
+ ret = ffurl_read(rt->stream, &c, 1);
+
+ /* switch the stream back into blocking mode */
+ rt->stream->flags &= ~AVIO_FLAG_NONBLOCK;
+
+ if (ret == AVERROR(EAGAIN)) {
+ /* no incoming data to handle */
+ return size;
+ } else if (ret < 0) {
+ return ret;
+ } else if (ret == 1) {
+ RTMPPacket rpkt = { 0 };
+
+ if ((ret = ff_rtmp_packet_read_internal(rt->stream, &rpkt,
+ rt->in_chunk_size,
+ rt->prev_pkt[0], c)) <= 0)
+ return ret;
+
+ if ((ret = rtmp_parse_result(s, rt, &rpkt)) < 0)
+ return ret;
+
+ ff_rtmp_packet_destroy(&rpkt);
+ }
+
return size;
}
-URLProtocol ff_rtmp_protocol = {
- .name = "rtmp",
- .url_open = rtmp_open,
- .url_read = rtmp_read,
- .url_write = rtmp_write,
- .url_close = rtmp_close,
+#define OFFSET(x) offsetof(RTMPContext, x)
+#define DEC AV_OPT_FLAG_DECODING_PARAM
+#define ENC AV_OPT_FLAG_ENCODING_PARAM
+
+static const AVOption rtmp_options[] = {
+ {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_buffer", "Set buffer time in milliseconds. The default is 3000.", OFFSET(client_buffer_time), AV_OPT_TYPE_INT, {.i64 = 3000}, 0, INT_MAX, DEC|ENC},
+ {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_flashver", "Version of the Flash plugin used to run the SWF player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_flush_interval", "Number of packets flushed in the same request (RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, ENC},
+ {"rtmp_live", "Specify that the media is a live stream.", OFFSET(live), AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, "rtmp_live"},
+ {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"},
+ {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, "rtmp_live"},
+ {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, "rtmp_live"},
+ {"rtmp_pageurl", "URL of the web page in which the media was embedded. By default no value will be sent.", OFFSET(pageurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
+ {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
+ {"rtmp_swfhash", "SHA256 hash of the decompressed SWF file (32 bytes).", OFFSET(swfhash), AV_OPT_TYPE_BINARY, .flags = DEC},
+ {"rtmp_swfsize", "Size of the decompressed SWF file, required for SWFVerification.", OFFSET(swfsize), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC},
+ {"rtmp_swfurl", "URL of the SWF player. By default no value will be sent", OFFSET(swfurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically.", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
+ {"rtmp_tcurl", "URL of the target stream. Defaults to proto://host[:port]/app.", OFFSET(tcurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
+ {"rtmp_listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_listen" },
+ {"timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1", OFFSET(listen_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC, "rtmp_listen" },
+ { NULL },
};
+
+#define RTMP_PROTOCOL(flavor) \
+static const AVClass flavor##_class = { \
+ .class_name = #flavor, \
+ .item_name = av_default_item_name, \
+ .option = rtmp_options, \
+ .version = LIBAVUTIL_VERSION_INT, \
+}; \
+ \
+URLProtocol ff_##flavor##_protocol = { \
+ .name = #flavor, \
+ .url_open = rtmp_open, \
+ .url_read = rtmp_read, \
+ .url_write = rtmp_write, \
+ .url_close = rtmp_close, \
+ .priv_data_size = sizeof(RTMPContext), \
+ .flags = URL_PROTOCOL_FLAG_NETWORK, \
+ .priv_data_class= &flavor##_class, \
+};
+
+
+RTMP_PROTOCOL(rtmp)
+RTMP_PROTOCOL(rtmpe)
+RTMP_PROTOCOL(rtmps)
+RTMP_PROTOCOL(rtmpt)
+RTMP_PROTOCOL(rtmpte)
+RTMP_PROTOCOL(rtmpts)
projects / ffmpeg / blobdiff