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-rw-r--r--stream/librtsp/rtsp.c804
1 files changed, 804 insertions, 0 deletions
diff --git a/stream/librtsp/rtsp.c b/stream/librtsp/rtsp.c
new file mode 100644
index 0000000000..16a77f77d5
--- /dev/null
+++ b/stream/librtsp/rtsp.c
@@ -0,0 +1,804 @@
+/*
+ * This file was ported to MPlayer from xine CVS rtsp.c,v 1.9 2003/04/10 02:30:48
+ */
+
+/*
+ * Copyright (C) 2000-2002 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * xine is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ *
+ * a minimalistic implementation of rtsp protocol,
+ * *not* RFC 2326 compilant yet.
+ *
+ * 2006, Benjamin Zores and Vincent Mussard
+ * fixed a lot of RFC compliance issues.
+ */
+
+#include <unistd.h>
+#include <stdio.h>
+#include <assert.h>
+#include "config.h"
+#ifndef HAVE_WINSOCK2
+#define closesocket close
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#else
+#include <winsock2.h>
+#endif
+#include <string.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <inttypes.h>
+
+#include "mp_msg.h"
+#include "rtsp.h"
+#include "rtsp_session.h"
+#include "osdep/timer.h"
+
+/*
+#define LOG
+*/
+
+#define BUF_SIZE 4096
+#define HEADER_SIZE 1024
+#define MAX_FIELDS 256
+
+struct rtsp_s {
+
+ int s;
+
+ char *host;
+ int port;
+ char *path;
+ char *param;
+ char *mrl;
+ char *user_agent;
+
+ char *server;
+ unsigned int server_state;
+ uint32_t server_caps;
+
+ unsigned int cseq;
+ char *session;
+
+ char *answers[MAX_FIELDS]; /* data of last message */
+ char *scheduled[MAX_FIELDS]; /* will be sent with next message */
+};
+
+/*
+ * constants
+ */
+
+#define RTSP_PROTOCOL_VERSION "RTSP/1.0"
+
+/* server states */
+#define RTSP_CONNECTED 1
+#define RTSP_INIT 2
+#define RTSP_READY 4
+#define RTSP_PLAYING 8
+#define RTSP_RECORDING 16
+
+/* server capabilities */
+#define RTSP_OPTIONS 0x001
+#define RTSP_DESCRIBE 0x002
+#define RTSP_ANNOUNCE 0x004
+#define RTSP_SETUP 0x008
+#define RTSP_GET_PARAMETER 0x010
+#define RTSP_SET_PARAMETER 0x020
+#define RTSP_TEARDOWN 0x040
+#define RTSP_PLAY 0x080
+#define RTSP_RECORD 0x100
+
+/*
+ * network utilities
+ */
+
+static int write_stream(int s, const char *buf, int len) {
+ int total, timeout;
+
+ total = 0; timeout = 30;
+ while (total < len){
+ int n;
+
+ n = send (s, &buf[total], len - total, 0);
+
+ if (n > 0)
+ total += n;
+ else if (n < 0) {
+#ifndef HAVE_WINSOCK2
+ if ((timeout>0) && ((errno == EAGAIN) || (errno == EINPROGRESS))) {
+#else
+ if ((timeout>0) && ((errno == EAGAIN) || (WSAGetLastError() == WSAEINPROGRESS))) {
+#endif
+ usec_sleep (1000000); timeout--;
+ } else
+ return -1;
+ }
+ }
+
+ return total;
+}
+
+static ssize_t read_stream(int fd, void *buf, size_t count) {
+
+ ssize_t ret, total;
+
+ total = 0;
+
+ while (total < count) {
+
+ ret=recv (fd, ((uint8_t*)buf)+total, count-total, 0);
+
+ if (ret<0) {
+ if(errno == EAGAIN) {
+ fd_set rset;
+ struct timeval timeout;
+
+ FD_ZERO (&rset);
+ FD_SET (fd, &rset);
+
+ timeout.tv_sec = 30;
+ timeout.tv_usec = 0;
+
+ if (select (fd+1, &rset, NULL, NULL, &timeout) <= 0) {
+ return -1;
+ }
+ continue;
+ }
+
+ mp_msg(MSGT_OPEN, MSGL_ERR, "rtsp: read error.\n");
+ return ret;
+ } else
+ total += ret;
+
+ /* end of stream */
+ if (!ret) break;
+ }
+
+ return total;
+}
+
+/*
+ * rtsp_get gets a line from stream
+ * and returns a null terminated string.
+ */
+
+static char *rtsp_get(rtsp_t *s) {
+
+ int n=1;
+ char *buffer = malloc(BUF_SIZE);
+ char *string = NULL;
+
+ read_stream(s->s, buffer, 1);
+ while (n<BUF_SIZE) {
+ read_stream(s->s, &(buffer[n]), 1);
+ if ((buffer[n-1]==0x0d)&&(buffer[n]==0x0a)) break;
+ n++;
+ }
+
+ if (n>=BUF_SIZE) {
+ mp_msg(MSGT_OPEN, MSGL_FATAL, "librtsp: buffer overflow in rtsp_get\n");
+ exit(1);
+ }
+ string=malloc(n);
+ memcpy(string,buffer,n-1);
+ string[n-1]=0;
+
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: << '%s'\n", string);
+#endif
+
+
+ free(buffer);
+ return string;
+}
+
+/*
+ * rtsp_put puts a line on stream
+ */
+
+static void rtsp_put(rtsp_t *s, const char *string) {
+
+ int len=strlen(string);
+ char *buf=malloc(len+2);
+
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: >> '%s'", string);
+#endif
+
+ memcpy(buf,string,len);
+ buf[len]=0x0d;
+ buf[len+1]=0x0a;
+
+ write_stream(s->s, buf, len+2);
+
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_INFO, " done.\n");
+#endif
+
+ free(buf);
+}
+
+/*
+ * extract server status code
+ */
+
+static int rtsp_get_code(const char *string) {
+
+ char buf[4];
+ int code=0;
+
+ if (!strncmp(string, RTSP_PROTOCOL_VERSION, strlen(RTSP_PROTOCOL_VERSION)))
+ {
+ memcpy(buf, string+strlen(RTSP_PROTOCOL_VERSION)+1, 3);
+ buf[3]=0;
+ code=atoi(buf);
+ } else if (!strncmp(string, RTSP_METHOD_SET_PARAMETER,8))
+ {
+ return RTSP_STATUS_SET_PARAMETER;
+ }
+
+ if(code != RTSP_STATUS_OK) mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: server responds: '%s'\n",string);
+
+ return code;
+}
+
+/*
+ * send a request
+ */
+
+static void rtsp_send_request(rtsp_t *s, const char *type, const char *what) {
+
+ char **payload=s->scheduled;
+ char *buf;
+
+ buf = malloc(strlen(type)+strlen(what)+strlen(RTSP_PROTOCOL_VERSION)+3);
+
+ sprintf(buf,"%s %s %s",type, what, RTSP_PROTOCOL_VERSION);
+ rtsp_put(s,buf);
+ free(buf);
+ if (payload)
+ while (*payload) {
+ rtsp_put(s,*payload);
+ payload++;
+ }
+ rtsp_put(s,"");
+ rtsp_unschedule_all(s);
+}
+
+/*
+ * schedule standard fields
+ */
+
+static void rtsp_schedule_standard(rtsp_t *s) {
+
+ char tmp[17];
+
+ snprintf(tmp, 17, "CSeq: %u", s->cseq);
+ rtsp_schedule_field(s, tmp);
+
+ if (s->session) {
+ char *buf;
+ buf = malloc(strlen(s->session)+15);
+ sprintf(buf, "Session: %s", s->session);
+ rtsp_schedule_field(s, buf);
+ free(buf);
+ }
+}
+/*
+ * get the answers, if server responses with something != 200, return NULL
+ */
+
+static int rtsp_get_answers(rtsp_t *s) {
+
+ char *answer=NULL;
+ unsigned int answer_seq;
+ char **answer_ptr=s->answers;
+ int code;
+ int ans_count = 0;
+
+ answer=rtsp_get(s);
+ if (!answer)
+ return 0;
+ code=rtsp_get_code(answer);
+ free(answer);
+
+ rtsp_free_answers(s);
+
+ do { /* while we get answer lines */
+
+ answer=rtsp_get(s);
+ if (!answer)
+ return 0;
+
+ if (!strncasecmp(answer,"CSeq:",5)) {
+ sscanf(answer,"%*s %u",&answer_seq);
+ if (s->cseq != answer_seq) {
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_WARN, "librtsp: warning: CSeq mismatch. got %u, assumed %u", answer_seq, s->cseq);
+#endif
+ s->cseq=answer_seq;
+ }
+ }
+ if (!strncasecmp(answer,"Server:",7)) {
+ char *buf = malloc(strlen(answer));
+ sscanf(answer,"%*s %s",buf);
+ if (s->server) free(s->server);
+ s->server=strdup(buf);
+ free(buf);
+ }
+ if (!strncasecmp(answer,"Session:",8)) {
+ char *buf = calloc(1, strlen(answer));
+ sscanf(answer,"%*s %s",buf);
+ if (s->session) {
+ if (strcmp(buf, s->session)) {
+ mp_msg(MSGT_OPEN, MSGL_WARN, "rtsp: warning: setting NEW session: %s\n", buf);
+ free(s->session);
+ s->session=strdup(buf);
+ }
+ } else
+ {
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_INFO, "rtsp: setting session id to: %s\n", buf);
+#endif
+ s->session=strdup(buf);
+ }
+ free(buf);
+ }
+ *answer_ptr=answer;
+ answer_ptr++;
+ } while ((strlen(answer)!=0) && (++ans_count < MAX_FIELDS));
+
+ s->cseq++;
+
+ *answer_ptr=NULL;
+ rtsp_schedule_standard(s);
+
+ return code;
+}
+
+/*
+ * send an ok message
+ */
+
+int rtsp_send_ok(rtsp_t *s) {
+ char cseq[16];
+
+ rtsp_put(s, "RTSP/1.0 200 OK");
+ sprintf(cseq,"CSeq: %u", s->cseq);
+ rtsp_put(s, cseq);
+ rtsp_put(s, "");
+ return 0;
+}
+
+/*
+ * implementation of must-have rtsp requests; functions return
+ * server status code.
+ */
+
+int rtsp_request_options(rtsp_t *s, const char *what) {
+
+ char *buf;
+
+ if (what) {
+ buf=strdup(what);
+ } else
+ {
+ buf=malloc(strlen(s->host)+16);
+ sprintf(buf,"rtsp://%s:%i", s->host, s->port);
+ }
+ rtsp_send_request(s,RTSP_METHOD_OPTIONS,buf);
+ free(buf);
+
+ return rtsp_get_answers(s);
+}
+
+int rtsp_request_describe(rtsp_t *s, const char *what) {
+
+ char *buf;
+
+ if (what) {
+ buf=strdup(what);
+ } else
+ {
+ buf=malloc(strlen(s->host)+strlen(s->path)+16);
+ sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
+ }
+ rtsp_send_request(s,RTSP_METHOD_DESCRIBE,buf);
+ free(buf);
+
+ return rtsp_get_answers(s);
+}
+
+int rtsp_request_setup(rtsp_t *s, const char *what, char *control) {
+
+ char *buf = NULL;
+
+ if (what)
+ buf = strdup (what);
+ else
+ {
+ int len = strlen (s->host) + strlen (s->path) + 16;
+ if (control)
+ len += strlen (control) + 1;
+
+ buf = malloc (len);
+ sprintf (buf, "rtsp://%s:%i/%s%s%s", s->host, s->port, s->path,
+ control ? "/" : "", control ? control : "");
+ }
+
+ rtsp_send_request (s, RTSP_METHOD_SETUP, buf);
+ free (buf);
+ return rtsp_get_answers (s);
+}
+
+int rtsp_request_setparameter(rtsp_t *s, const char *what) {
+
+ char *buf;
+
+ if (what) {
+ buf=strdup(what);
+ } else
+ {
+ buf=malloc(strlen(s->host)+strlen(s->path)+16);
+ sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
+ }
+ rtsp_send_request(s,RTSP_METHOD_SET_PARAMETER,buf);
+ free(buf);
+
+ return rtsp_get_answers(s);
+}
+
+int rtsp_request_play(rtsp_t *s, const char *what) {
+
+ char *buf;
+ int ret;
+
+ if (what) {
+ buf=strdup(what);
+ } else
+ {
+ buf=malloc(strlen(s->host)+strlen(s->path)+16);
+ sprintf(buf,"rtsp://%s:%i/%s", s->host, s->port, s->path);
+ }
+ rtsp_send_request(s,RTSP_METHOD_PLAY,buf);
+ free(buf);
+
+ ret = rtsp_get_answers (s);
+ if (ret == RTSP_STATUS_OK)
+ s->server_state = RTSP_PLAYING;
+
+ return ret;
+}
+
+int rtsp_request_teardown(rtsp_t *s, const char *what) {
+
+ char *buf;
+
+ if (what)
+ buf = strdup (what);
+ else
+ {
+ buf =
+ malloc (strlen (s->host) + strlen (s->path) + 16);
+ sprintf (buf, "rtsp://%s:%i/%s", s->host, s->port, s->path);
+ }
+ rtsp_send_request (s, RTSP_METHOD_TEARDOWN, buf);
+ free (buf);
+
+ /* after teardown we're done with RTSP streaming, no need to get answer as
+ reading more will only result to garbage and buffer overflow */
+ return RTSP_STATUS_OK;
+}
+
+/*
+ * read opaque data from stream
+ */
+
+int rtsp_read_data(rtsp_t *s, char *buffer, unsigned int size) {
+
+ int i,seq;
+
+ if (size>=4) {
+ i=read_stream(s->s, buffer, 4);
+ if (i<4) return i;
+ if (((buffer[0]=='S')&&(buffer[1]=='E')&&(buffer[2]=='T')&&(buffer[3]=='_')) ||
+ ((buffer[0]=='O')&&(buffer[1]=='P')&&(buffer[2]=='T')&&(buffer[3]=='I'))) // OPTIONS
+ {
+ char *rest=rtsp_get(s);
+ if (!rest)
+ return -1;
+
+ seq=-1;
+ do {
+ free(rest);
+ rest=rtsp_get(s);
+ if (!rest)
+ return -1;
+ if (!strncasecmp(rest,"CSeq:",5))
+ sscanf(rest,"%*s %u",&seq);
+ } while (strlen(rest)!=0);
+ free(rest);
+ if (seq<0) {
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_WARN, "rtsp: warning: CSeq not recognized!\n");
+#endif
+ seq=1;
+ }
+ /* let's make the server happy */
+ rtsp_put(s, "RTSP/1.0 451 Parameter Not Understood");
+ rest=malloc(17);
+ sprintf(rest,"CSeq: %u", seq);
+ rtsp_put(s, rest);
+ free(rest);
+ rtsp_put(s, "");
+ i=read_stream(s->s, buffer, size);
+ } else
+ {
+ i=read_stream(s->s, buffer+4, size-4);
+ i+=4;
+ }
+ } else
+ i=read_stream(s->s, buffer, size);
+#ifdef LOG
+ mp_msg(MSGT_OPEN, MSGL_INFO, "librtsp: << %d of %d bytes\n", i, size);
+#endif
+
+ return i;
+}
+
+/*
+ * connect to a rtsp server
+ */
+
+//rtsp_t *rtsp_connect(const char *mrl, const char *user_agent) {
+rtsp_t *rtsp_connect(int fd, char* mrl, char *path, char *host, int port, char *user_agent) {
+
+ rtsp_t *s=malloc(sizeof(rtsp_t));
+ int i;
+
+ for (i=0; i<MAX_FIELDS; i++) {
+ s->answers[i]=NULL;
+ s->scheduled[i]=NULL;
+ }
+
+ s->server=NULL;
+ s->server_state=0;
+ s->server_caps=0;
+
+ s->cseq=0;
+ s->session=NULL;
+
+ if (user_agent)
+ s->user_agent=strdup(user_agent);
+ else
+ s->user_agent=strdup("User-Agent: RealMedia Player Version 6.0.9.1235 (linux-2.0-libc6-i386-gcc2.95)");
+
+ s->mrl = strdup(mrl);
+ s->host = strdup(host);
+ s->port = port;
+ s->path = strdup(path);
+ while (*path == '/')
+ path++;
+ if ((s->param = strchr(s->path, '?')) != NULL)
+ s->param++;
+ //mp_msg(MSGT_OPEN, MSGL_INFO, "path=%s\n", s->path);
+ //mp_msg(MSGT_OPEN, MSGL_INFO, "param=%s\n", s->param ? s->param : "NULL");
+ s->s = fd;
+
+ if (s->s < 0) {
+ mp_msg(MSGT_OPEN, MSGL_ERR, "rtsp: failed to connect to '%s'\n", s->host);
+ rtsp_close(s);
+ return NULL;
+ }
+
+ s->server_state=RTSP_CONNECTED;
+
+ /* now let's send an options request. */
+ rtsp_schedule_field(s, "CSeq: 1");
+ rtsp_schedule_field(s, s->user_agent);
+ rtsp_schedule_field(s, "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7");
+ rtsp_schedule_field(s, "PlayerStarttime: [28/03/2003:22:50:23 00:00]");
+ rtsp_schedule_field(s, "CompanyID: KnKV4M4I/B2FjJ1TToLycw==");
+ rtsp_schedule_field(s, "GUID: 00000000-0000-0000-0000-000000000000");
+ rtsp_schedule_field(s, "RegionData: 0");
+ rtsp_schedule_field(s, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
+ /*rtsp_schedule_field(s, "Pragma: initiate-session");*/
+ rtsp_request_options(s, NULL);
+
+ return s;
+}
+
+
+/*
+ * closes an rtsp connection
+ */
+
+void rtsp_close(rtsp_t *s) {
+
+ if (s->server_state)
+ {
+ if (s->server_state == RTSP_PLAYING)
+ rtsp_request_teardown (s, NULL);
+ closesocket (s->s);
+ }
+
+ if (s->path) free(s->path);
+ if (s->host) free(s->host);
+ if (s->mrl) free(s->mrl);
+ if (s->session) free(s->session);
+ if (s->user_agent) free(s->user_agent);
+ rtsp_free_answers(s);
+ rtsp_unschedule_all(s);
+ free(s);
+}
+
+/*
+ * search in answers for tags. returns a pointer to the content
+ * after the first matched tag. returns NULL if no match found.
+ */
+
+char *rtsp_search_answers(rtsp_t *s, const char *tag) {
+
+ char **answer;
+ char *ptr;
+
+ if (!s->answers) return NULL;
+ answer=s->answers;
+
+ while (*answer) {
+ if (!strncasecmp(*answer,tag,strlen(tag))) {
+ ptr=strchr(*answer,':');
+ if (!ptr) return NULL;
+ ptr++;
+ while(*ptr==' ') ptr++;
+ return ptr;
+ }
+ answer++;
+ }
+
+ return NULL;
+}
+
+/*
+ * session id management
+ */
+
+void rtsp_set_session(rtsp_t *s, const char *id) {
+
+ if (s->session) free(s->session);
+
+ s->session=strdup(id);
+
+}
+
+char *rtsp_get_session(rtsp_t *s) {
+
+ return s->session;
+
+}
+
+char *rtsp_get_mrl(rtsp_t *s) {
+
+ return s->mrl;
+
+}
+
+char *rtsp_get_param(rtsp_t *s, const char *p) {
+ int len;
+ char *param;
+ if (!s->param)
+ return NULL;
+ if (!p)
+ return strdup(s->param);
+ len = strlen(p);
+ param = s->param;
+ while (param && *param) {
+ char *nparam = strchr(param, '&');
+ if (strncmp(param, p, len) == 0 && param[len] == '=') {
+ param += len + 1;
+ len = nparam ? nparam - param : strlen(param);
+ nparam = malloc(len + 1);
+ memcpy(nparam, param, len);
+ nparam[len] = 0;
+ return nparam;
+ }
+ param = nparam ? nparam + 1 : NULL;
+ }
+ return NULL;
+}
+
+/*
+ * schedules a field for transmission
+ */
+
+void rtsp_schedule_field(rtsp_t *s, const char *string) {
+
+ int i=0;
+
+ if (!string) return;
+
+ while(s->scheduled[i]) {
+ i++;
+ }
+ s->scheduled[i]=strdup(string);
+}
+
+/*
+ * removes the first scheduled field which prefix matches string.
+ */
+
+void rtsp_unschedule_field(rtsp_t *s, const char *string) {
+
+ char **ptr=s->scheduled;
+
+ if (!string) return;
+
+ while(*ptr) {
+ if (!strncmp(*ptr, string, strlen(string)))
+ break;
+ else
+ ptr++;
+ }
+ if (*ptr) free(*ptr);
+ ptr++;
+ do {
+ *(ptr-1)=*ptr;
+ } while(*ptr);
+}
+
+/*
+ * unschedule all fields
+ */
+
+void rtsp_unschedule_all(rtsp_t *s) {
+
+ char **ptr;
+
+ if (!s->scheduled) return;
+ ptr=s->scheduled;
+
+ while (*ptr) {
+ free(*ptr);
+ *ptr=NULL;
+ ptr++;
+ }
+}
+/*
+ * free answers
+ */
+
+void rtsp_free_answers(rtsp_t *s) {
+
+ char **answer;
+
+ if (!s->answers) return;
+ answer=s->answers;
+
+ while (*answer) {
+ free(*answer);
+ *answer=NULL;
+ answer++;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 16:49:56 +0000