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00029 #include "asterisk.h"
00030
00031 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 116463 $")
00032
00033 #include <stdio.h>
00034 #include <stdlib.h>
00035 #include <string.h>
00036 #include <sys/time.h>
00037 #include <signal.h>
00038 #include <errno.h>
00039 #include <unistd.h>
00040 #include <netinet/in.h>
00041 #include <sys/time.h>
00042 #include <sys/socket.h>
00043 #include <arpa/inet.h>
00044 #include <fcntl.h>
00045
00046 #include "asterisk/rtp.h"
00047 #include "asterisk/frame.h"
00048 #include "asterisk/logger.h"
00049 #include "asterisk/options.h"
00050 #include "asterisk/channel.h"
00051 #include "asterisk/acl.h"
00052 #include "asterisk/channel.h"
00053 #include "asterisk/config.h"
00054 #include "asterisk/lock.h"
00055 #include "asterisk/utils.h"
00056 #include "asterisk/cli.h"
00057 #include "asterisk/unaligned.h"
00058 #include "asterisk/utils.h"
00059
00060 #define MAX_TIMESTAMP_SKEW 640
00061
00062 #define RTP_SEQ_MOD (1<<16)
00063 #define RTCP_DEFAULT_INTERVALMS 5000
00064 #define RTCP_MIN_INTERVALMS 500
00065 #define RTCP_MAX_INTERVALMS 60000
00066
00067 #define RTCP_PT_FUR 192
00068 #define RTCP_PT_SR 200
00069 #define RTCP_PT_RR 201
00070 #define RTCP_PT_SDES 202
00071 #define RTCP_PT_BYE 203
00072 #define RTCP_PT_APP 204
00073
00074 #define RTP_MTU 1200
00075
00076 #define DEFAULT_DTMF_TIMEOUT 3000
00077
00078 static int dtmftimeout = DEFAULT_DTMF_TIMEOUT;
00079
00080 static int rtpstart;
00081 static int rtpend;
00082 static int rtpdebug;
00083 static int rtcpdebug;
00084 static int rtcpstats;
00085 static int rtcpinterval = RTCP_DEFAULT_INTERVALMS;
00086 static int stundebug;
00087 static struct sockaddr_in rtpdebugaddr;
00088 static struct sockaddr_in rtcpdebugaddr;
00089 #ifdef SO_NO_CHECK
00090 static int nochecksums;
00091 #endif
00092
00093
00094
00095
00096
00097
00098
00099
00100
00101
00102
00103 struct rtpPayloadType {
00104 int isAstFormat;
00105 int code;
00106 };
00107
00108
00109
00110 struct ast_rtp {
00111 int s;
00112 struct ast_frame f;
00113 unsigned char rawdata[8192 + AST_FRIENDLY_OFFSET];
00114 unsigned int ssrc;
00115 unsigned int themssrc;
00116 unsigned int rxssrc;
00117 unsigned int lastts;
00118 unsigned int lastrxts;
00119 unsigned int lastividtimestamp;
00120 unsigned int lastovidtimestamp;
00121 unsigned int lasteventseqn;
00122 int lastrxseqno;
00123 unsigned short seedrxseqno;
00124 unsigned int seedrxts;
00125 unsigned int rxcount;
00126 unsigned int rxoctetcount;
00127 unsigned int txcount;
00128 unsigned int txoctetcount;
00129 unsigned int cycles;
00130 double rxjitter;
00131 double rxtransit;
00132 int lasttxformat;
00133 int lastrxformat;
00134
00135 int rtptimeout;
00136 int rtpholdtimeout;
00137 int rtpkeepalive;
00138
00139
00140 char resp;
00141 unsigned int lastevent;
00142 int dtmfcount;
00143 unsigned int dtmfsamples;
00144
00145 unsigned int lastdigitts;
00146 char sending_digit;
00147 char send_digit;
00148 int send_payload;
00149 int send_duration;
00150 int nat;
00151 unsigned int flags;
00152 struct sockaddr_in us;
00153 struct sockaddr_in them;
00154 struct timeval rxcore;
00155 struct timeval txcore;
00156 double drxcore;
00157 struct timeval lastrx;
00158 struct timeval dtmfmute;
00159 struct ast_smoother *smoother;
00160 int *ioid;
00161 unsigned short seqno;
00162 unsigned short rxseqno;
00163 struct sched_context *sched;
00164 struct io_context *io;
00165 void *data;
00166 ast_rtp_callback callback;
00167 ast_mutex_t bridge_lock;
00168 struct rtpPayloadType current_RTP_PT[MAX_RTP_PT];
00169 int rtp_lookup_code_cache_isAstFormat;
00170 int rtp_lookup_code_cache_code;
00171 int rtp_lookup_code_cache_result;
00172 struct ast_rtcp *rtcp;
00173 struct ast_codec_pref pref;
00174 struct ast_rtp *bridged;
00175 int set_marker_bit:1;
00176 };
00177
00178
00179 static int ast_rtcp_write(const void *data);
00180 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw);
00181 static int ast_rtcp_write_sr(const void *data);
00182 static int ast_rtcp_write_rr(const void *data);
00183 static unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp);
00184 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp);
00185 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit);
00186
00187 #define FLAG_3389_WARNING (1 << 0)
00188 #define FLAG_NAT_ACTIVE (3 << 1)
00189 #define FLAG_NAT_INACTIVE (0 << 1)
00190 #define FLAG_NAT_INACTIVE_NOWARN (1 << 1)
00191 #define FLAG_HAS_DTMF (1 << 3)
00192 #define FLAG_P2P_SENT_MARK (1 << 4)
00193 #define FLAG_P2P_NEED_DTMF (1 << 5)
00194 #define FLAG_CALLBACK_MODE (1 << 6)
00195 #define FLAG_DTMF_COMPENSATE (1 << 7)
00196 #define FLAG_HAS_STUN (1 << 8)
00197
00198
00199
00200
00201
00202
00203
00204
00205
00206
00207
00208 struct ast_rtcp {
00209 int s;
00210 struct sockaddr_in us;
00211 struct sockaddr_in them;
00212 unsigned int soc;
00213 unsigned int spc;
00214 unsigned int themrxlsr;
00215 struct timeval rxlsr;
00216 struct timeval txlsr;
00217 unsigned int expected_prior;
00218 unsigned int received_prior;
00219 int schedid;
00220 unsigned int rr_count;
00221 unsigned int sr_count;
00222 unsigned int lastsrtxcount;
00223 double accumulated_transit;
00224 double rtt;
00225 unsigned int reported_jitter;
00226 unsigned int reported_lost;
00227 char quality[AST_MAX_USER_FIELD];
00228 double maxrxjitter;
00229 double minrxjitter;
00230 double maxrtt;
00231 double minrtt;
00232 int sendfur;
00233 };
00234
00235
00236 typedef struct { unsigned int id[4]; } __attribute__((packed)) stun_trans_id;
00237
00238
00239 struct stun_header {
00240 unsigned short msgtype;
00241 unsigned short msglen;
00242 stun_trans_id id;
00243 unsigned char ies[0];
00244 } __attribute__((packed));
00245
00246 struct stun_attr {
00247 unsigned short attr;
00248 unsigned short len;
00249 unsigned char value[0];
00250 } __attribute__((packed));
00251
00252 struct stun_addr {
00253 unsigned char unused;
00254 unsigned char family;
00255 unsigned short port;
00256 unsigned int addr;
00257 } __attribute__((packed));
00258
00259 #define STUN_IGNORE (0)
00260 #define STUN_ACCEPT (1)
00261
00262 #define STUN_BINDREQ 0x0001
00263 #define STUN_BINDRESP 0x0101
00264 #define STUN_BINDERR 0x0111
00265 #define STUN_SECREQ 0x0002
00266 #define STUN_SECRESP 0x0102
00267 #define STUN_SECERR 0x0112
00268
00269 #define STUN_MAPPED_ADDRESS 0x0001
00270 #define STUN_RESPONSE_ADDRESS 0x0002
00271 #define STUN_CHANGE_REQUEST 0x0003
00272 #define STUN_SOURCE_ADDRESS 0x0004
00273 #define STUN_CHANGED_ADDRESS 0x0005
00274 #define STUN_USERNAME 0x0006
00275 #define STUN_PASSWORD 0x0007
00276 #define STUN_MESSAGE_INTEGRITY 0x0008
00277 #define STUN_ERROR_CODE 0x0009
00278 #define STUN_UNKNOWN_ATTRIBUTES 0x000a
00279 #define STUN_REFLECTED_FROM 0x000b
00280
00281 static const char *stun_msg2str(int msg)
00282 {
00283 switch(msg) {
00284 case STUN_BINDREQ:
00285 return "Binding Request";
00286 case STUN_BINDRESP:
00287 return "Binding Response";
00288 case STUN_BINDERR:
00289 return "Binding Error Response";
00290 case STUN_SECREQ:
00291 return "Shared Secret Request";
00292 case STUN_SECRESP:
00293 return "Shared Secret Response";
00294 case STUN_SECERR:
00295 return "Shared Secret Error Response";
00296 }
00297 return "Non-RFC3489 Message";
00298 }
00299
00300 static const char *stun_attr2str(int msg)
00301 {
00302 switch(msg) {
00303 case STUN_MAPPED_ADDRESS:
00304 return "Mapped Address";
00305 case STUN_RESPONSE_ADDRESS:
00306 return "Response Address";
00307 case STUN_CHANGE_REQUEST:
00308 return "Change Request";
00309 case STUN_SOURCE_ADDRESS:
00310 return "Source Address";
00311 case STUN_CHANGED_ADDRESS:
00312 return "Changed Address";
00313 case STUN_USERNAME:
00314 return "Username";
00315 case STUN_PASSWORD:
00316 return "Password";
00317 case STUN_MESSAGE_INTEGRITY:
00318 return "Message Integrity";
00319 case STUN_ERROR_CODE:
00320 return "Error Code";
00321 case STUN_UNKNOWN_ATTRIBUTES:
00322 return "Unknown Attributes";
00323 case STUN_REFLECTED_FROM:
00324 return "Reflected From";
00325 }
00326 return "Non-RFC3489 Attribute";
00327 }
00328
00329 struct stun_state {
00330 const char *username;
00331 const char *password;
00332 };
00333
00334 static int stun_process_attr(struct stun_state *state, struct stun_attr *attr)
00335 {
00336 if (stundebug)
00337 ast_verbose("Found STUN Attribute %s (%04x), length %d\n",
00338 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00339 switch(ntohs(attr->attr)) {
00340 case STUN_USERNAME:
00341 state->username = (const char *) (attr->value);
00342 break;
00343 case STUN_PASSWORD:
00344 state->password = (const char *) (attr->value);
00345 break;
00346 default:
00347 if (stundebug)
00348 ast_verbose("Ignoring STUN attribute %s (%04x), length %d\n",
00349 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00350 }
00351 return 0;
00352 }
00353
00354 static void append_attr_string(struct stun_attr **attr, int attrval, const char *s, int *len, int *left)
00355 {
00356 int size = sizeof(**attr) + strlen(s);
00357 if (*left > size) {
00358 (*attr)->attr = htons(attrval);
00359 (*attr)->len = htons(strlen(s));
00360 memcpy((*attr)->value, s, strlen(s));
00361 (*attr) = (struct stun_attr *)((*attr)->value + strlen(s));
00362 *len += size;
00363 *left -= size;
00364 }
00365 }
00366
00367 static void append_attr_address(struct stun_attr **attr, int attrval, struct sockaddr_in *sin, int *len, int *left)
00368 {
00369 int size = sizeof(**attr) + 8;
00370 struct stun_addr *addr;
00371 if (*left > size) {
00372 (*attr)->attr = htons(attrval);
00373 (*attr)->len = htons(8);
00374 addr = (struct stun_addr *)((*attr)->value);
00375 addr->unused = 0;
00376 addr->family = 0x01;
00377 addr->port = sin->sin_port;
00378 addr->addr = sin->sin_addr.s_addr;
00379 (*attr) = (struct stun_attr *)((*attr)->value + 8);
00380 *len += size;
00381 *left -= size;
00382 }
00383 }
00384
00385 static int stun_send(int s, struct sockaddr_in *dst, struct stun_header *resp)
00386 {
00387 return sendto(s, resp, ntohs(resp->msglen) + sizeof(*resp), 0,
00388 (struct sockaddr *)dst, sizeof(*dst));
00389 }
00390
00391 static void stun_req_id(struct stun_header *req)
00392 {
00393 int x;
00394 for (x=0;x<4;x++)
00395 req->id.id[x] = ast_random();
00396 }
00397
00398 size_t ast_rtp_alloc_size(void)
00399 {
00400 return sizeof(struct ast_rtp);
00401 }
00402
00403 void ast_rtp_stun_request(struct ast_rtp *rtp, struct sockaddr_in *suggestion, const char *username)
00404 {
00405 struct stun_header *req;
00406 unsigned char reqdata[1024];
00407 int reqlen, reqleft;
00408 struct stun_attr *attr;
00409
00410 req = (struct stun_header *)reqdata;
00411 stun_req_id(req);
00412 reqlen = 0;
00413 reqleft = sizeof(reqdata) - sizeof(struct stun_header);
00414 req->msgtype = 0;
00415 req->msglen = 0;
00416 attr = (struct stun_attr *)req->ies;
00417 if (username)
00418 append_attr_string(&attr, STUN_USERNAME, username, &reqlen, &reqleft);
00419 req->msglen = htons(reqlen);
00420 req->msgtype = htons(STUN_BINDREQ);
00421 stun_send(rtp->s, suggestion, req);
00422 }
00423
00424 static int stun_handle_packet(int s, struct sockaddr_in *src, unsigned char *data, size_t len)
00425 {
00426 struct stun_header *resp, *hdr = (struct stun_header *)data;
00427 struct stun_attr *attr;
00428 struct stun_state st;
00429 int ret = STUN_IGNORE;
00430 unsigned char respdata[1024];
00431 int resplen, respleft;
00432
00433 if (len < sizeof(struct stun_header)) {
00434 if (option_debug)
00435 ast_log(LOG_DEBUG, "Runt STUN packet (only %zd, wanting at least %zd)\n", len, sizeof(struct stun_header));
00436 return -1;
00437 }
00438 if (stundebug)
00439 ast_verbose("STUN Packet, msg %s (%04x), length: %d\n", stun_msg2str(ntohs(hdr->msgtype)), ntohs(hdr->msgtype), ntohs(hdr->msglen));
00440 if (ntohs(hdr->msglen) > len - sizeof(struct stun_header)) {
00441 if (option_debug)
00442 ast_log(LOG_DEBUG, "Scrambled STUN packet length (got %d, expecting %zd)\n", ntohs(hdr->msglen), len - sizeof(struct stun_header));
00443 } else
00444 len = ntohs(hdr->msglen);
00445 data += sizeof(struct stun_header);
00446 memset(&st, 0, sizeof(st));
00447 while(len) {
00448 if (len < sizeof(struct stun_attr)) {
00449 if (option_debug)
00450 ast_log(LOG_DEBUG, "Runt Attribute (got %zd, expecting %zd)\n", len, sizeof(struct stun_attr));
00451 break;
00452 }
00453 attr = (struct stun_attr *)data;
00454 if ((ntohs(attr->len) + sizeof(struct stun_attr)) > len) {
00455 if (option_debug)
00456 ast_log(LOG_DEBUG, "Inconsistent Attribute (length %d exceeds remaining msg len %d)\n", (int) (ntohs(attr->len) + sizeof(struct stun_attr)), (int) len);
00457 break;
00458 }
00459 if (stun_process_attr(&st, attr)) {
00460 if (option_debug)
00461 ast_log(LOG_DEBUG, "Failed to handle attribute %s (%04x)\n", stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr));
00462 break;
00463 }
00464
00465 attr->attr = 0;
00466 data += ntohs(attr->len) + sizeof(struct stun_attr);
00467 len -= ntohs(attr->len) + sizeof(struct stun_attr);
00468 }
00469
00470 *data = '\0';
00471 resp = (struct stun_header *)respdata;
00472 resplen = 0;
00473 respleft = sizeof(respdata) - sizeof(struct stun_header);
00474 resp->id = hdr->id;
00475 resp->msgtype = 0;
00476 resp->msglen = 0;
00477 attr = (struct stun_attr *)resp->ies;
00478 if (!len) {
00479 switch(ntohs(hdr->msgtype)) {
00480 case STUN_BINDREQ:
00481 if (stundebug)
00482 ast_verbose("STUN Bind Request, username: %s\n",
00483 st.username ? st.username : "<none>");
00484 if (st.username)
00485 append_attr_string(&attr, STUN_USERNAME, st.username, &resplen, &respleft);
00486 append_attr_address(&attr, STUN_MAPPED_ADDRESS, src, &resplen, &respleft);
00487 resp->msglen = htons(resplen);
00488 resp->msgtype = htons(STUN_BINDRESP);
00489 stun_send(s, src, resp);
00490 ret = STUN_ACCEPT;
00491 break;
00492 default:
00493 if (stundebug)
00494 ast_verbose("Dunno what to do with STUN message %04x (%s)\n", ntohs(hdr->msgtype), stun_msg2str(ntohs(hdr->msgtype)));
00495 }
00496 }
00497 return ret;
00498 }
00499
00500
00501 static AST_LIST_HEAD_STATIC(protos, ast_rtp_protocol);
00502
00503 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw)
00504 {
00505 unsigned int sec, usec, frac;
00506 sec = tv.tv_sec + 2208988800u;
00507 usec = tv.tv_usec;
00508 frac = (usec << 12) + (usec << 8) - ((usec * 3650) >> 6);
00509 *msw = sec;
00510 *lsw = frac;
00511 }
00512
00513 int ast_rtp_fd(struct ast_rtp *rtp)
00514 {
00515 return rtp->s;
00516 }
00517
00518 int ast_rtcp_fd(struct ast_rtp *rtp)
00519 {
00520 if (rtp->rtcp)
00521 return rtp->rtcp->s;
00522 return -1;
00523 }
00524
00525 unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp)
00526 {
00527 unsigned int interval;
00528
00529
00530 interval = rtcpinterval;
00531 return interval;
00532 }
00533
00534
00535 void ast_rtp_set_rtptimers_onhold(struct ast_rtp *rtp)
00536 {
00537 rtp->rtptimeout = (-1) * rtp->rtptimeout;
00538 rtp->rtpholdtimeout = (-1) * rtp->rtpholdtimeout;
00539 }
00540
00541
00542 void ast_rtp_set_rtptimeout(struct ast_rtp *rtp, int timeout)
00543 {
00544 rtp->rtptimeout = timeout;
00545 }
00546
00547
00548 void ast_rtp_set_rtpholdtimeout(struct ast_rtp *rtp, int timeout)
00549 {
00550 rtp->rtpholdtimeout = timeout;
00551 }
00552
00553
00554 void ast_rtp_set_rtpkeepalive(struct ast_rtp *rtp, int period)
00555 {
00556 rtp->rtpkeepalive = period;
00557 }
00558
00559
00560 int ast_rtp_get_rtptimeout(struct ast_rtp *rtp)
00561 {
00562 if (rtp->rtptimeout < 0)
00563 return 0;
00564 return rtp->rtptimeout;
00565 }
00566
00567
00568 int ast_rtp_get_rtpholdtimeout(struct ast_rtp *rtp)
00569 {
00570 if (rtp->rtptimeout < 0)
00571 return 0;
00572 return rtp->rtpholdtimeout;
00573 }
00574
00575
00576 int ast_rtp_get_rtpkeepalive(struct ast_rtp *rtp)
00577 {
00578 return rtp->rtpkeepalive;
00579 }
00580
00581 void ast_rtp_set_data(struct ast_rtp *rtp, void *data)
00582 {
00583 rtp->data = data;
00584 }
00585
00586 void ast_rtp_set_callback(struct ast_rtp *rtp, ast_rtp_callback callback)
00587 {
00588 rtp->callback = callback;
00589 }
00590
00591 void ast_rtp_setnat(struct ast_rtp *rtp, int nat)
00592 {
00593 rtp->nat = nat;
00594 }
00595
00596 int ast_rtp_getnat(struct ast_rtp *rtp)
00597 {
00598 return ast_test_flag(rtp, FLAG_NAT_ACTIVE);
00599 }
00600
00601 void ast_rtp_setdtmf(struct ast_rtp *rtp, int dtmf)
00602 {
00603 ast_set2_flag(rtp, dtmf ? 1 : 0, FLAG_HAS_DTMF);
00604 }
00605
00606 void ast_rtp_setdtmfcompensate(struct ast_rtp *rtp, int compensate)
00607 {
00608 ast_set2_flag(rtp, compensate ? 1 : 0, FLAG_DTMF_COMPENSATE);
00609 }
00610
00611 void ast_rtp_setstun(struct ast_rtp *rtp, int stun_enable)
00612 {
00613 ast_set2_flag(rtp, stun_enable ? 1 : 0, FLAG_HAS_STUN);
00614 }
00615
00616 static struct ast_frame *send_dtmf(struct ast_rtp *rtp, enum ast_frame_type type)
00617 {
00618 if (((ast_test_flag(rtp, FLAG_DTMF_COMPENSATE) && type == AST_FRAME_DTMF_END) ||
00619 (type == AST_FRAME_DTMF_BEGIN)) && ast_tvcmp(ast_tvnow(), rtp->dtmfmute) < 0) {
00620 if (option_debug)
00621 ast_log(LOG_DEBUG, "Ignore potential DTMF echo from '%s'\n", ast_inet_ntoa(rtp->them.sin_addr));
00622 rtp->resp = 0;
00623 rtp->dtmfsamples = 0;
00624 return &ast_null_frame;
00625 }
00626 if (option_debug)
00627 ast_log(LOG_DEBUG, "Sending dtmf: %d (%c), at %s\n", rtp->resp, rtp->resp, ast_inet_ntoa(rtp->them.sin_addr));
00628 if (rtp->resp == 'X') {
00629 rtp->f.frametype = AST_FRAME_CONTROL;
00630 rtp->f.subclass = AST_CONTROL_FLASH;
00631 } else {
00632 rtp->f.frametype = type;
00633 rtp->f.subclass = rtp->resp;
00634 }
00635 rtp->f.datalen = 0;
00636 rtp->f.samples = 0;
00637 rtp->f.mallocd = 0;
00638 rtp->f.src = "RTP";
00639 return &rtp->f;
00640
00641 }
00642
00643 static inline int rtp_debug_test_addr(struct sockaddr_in *addr)
00644 {
00645 if (rtpdebug == 0)
00646 return 0;
00647 if (rtpdebugaddr.sin_addr.s_addr) {
00648 if (((ntohs(rtpdebugaddr.sin_port) != 0)
00649 && (rtpdebugaddr.sin_port != addr->sin_port))
00650 || (rtpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00651 return 0;
00652 }
00653 return 1;
00654 }
00655
00656 static inline int rtcp_debug_test_addr(struct sockaddr_in *addr)
00657 {
00658 if (rtcpdebug == 0)
00659 return 0;
00660 if (rtcpdebugaddr.sin_addr.s_addr) {
00661 if (((ntohs(rtcpdebugaddr.sin_port) != 0)
00662 && (rtcpdebugaddr.sin_port != addr->sin_port))
00663 || (rtcpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00664 return 0;
00665 }
00666 return 1;
00667 }
00668
00669
00670 static struct ast_frame *process_cisco_dtmf(struct ast_rtp *rtp, unsigned char *data, int len)
00671 {
00672 unsigned int event;
00673 char resp = 0;
00674 struct ast_frame *f = NULL;
00675 event = ntohl(*((unsigned int *)(data)));
00676 event &= 0x001F;
00677 if (option_debug > 2 || rtpdebug)
00678 ast_log(LOG_DEBUG, "Cisco DTMF Digit: %08x (len = %d)\n", event, len);
00679 if (event < 10) {
00680 resp = '0' + event;
00681 } else if (event < 11) {
00682 resp = '*';
00683 } else if (event < 12) {
00684 resp = '#';
00685 } else if (event < 16) {
00686 resp = 'A' + (event - 12);
00687 } else if (event < 17) {
00688 resp = 'X';
00689 }
00690 if (rtp->resp && (rtp->resp != resp)) {
00691 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00692 }
00693 rtp->resp = resp;
00694 rtp->dtmfcount = dtmftimeout;
00695 return f;
00696 }
00697
00698
00699
00700
00701
00702
00703
00704
00705
00706
00707
00708
00709 static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *data, int len, unsigned int seqno, unsigned int timestamp)
00710 {
00711 unsigned int event;
00712 unsigned int event_end;
00713 unsigned int samples;
00714 char resp = 0;
00715 struct ast_frame *f = NULL;
00716
00717
00718 event = ntohl(*((unsigned int *)(data)));
00719 event >>= 24;
00720 event_end = ntohl(*((unsigned int *)(data)));
00721 event_end <<= 8;
00722 event_end >>= 24;
00723 samples = ntohl(*((unsigned int *)(data)));
00724 samples &= 0xFFFF;
00725
00726
00727 if (rtpdebug || option_debug > 2)
00728 ast_log(LOG_DEBUG, "- RTP 2833 Event: %08x (len = %d)\n", event, len);
00729
00730
00731 if (event < 10) {
00732 resp = '0' + event;
00733 } else if (event < 11) {
00734 resp = '*';
00735 } else if (event < 12) {
00736 resp = '#';
00737 } else if (event < 16) {
00738 resp = 'A' + (event - 12);
00739 } else if (event < 17) {
00740 resp = 'X';
00741 } else {
00742
00743 ast_log(LOG_DEBUG, "Ignoring RTP 2833 Event: %08x. Not a DTMF Digit.\n", event);
00744 return &ast_null_frame;
00745 }
00746
00747 if (ast_test_flag(rtp, FLAG_DTMF_COMPENSATE)) {
00748 if ((rtp->lastevent != timestamp) || (rtp->resp && rtp->resp != resp)) {
00749 rtp->resp = resp;
00750 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00751 f->len = 0;
00752 rtp->lastevent = timestamp;
00753 }
00754 } else {
00755 if ((!(rtp->resp) && (!(event_end & 0x80))) || (rtp->resp && rtp->resp != resp)) {
00756 rtp->resp = resp;
00757 f = send_dtmf(rtp, AST_FRAME_DTMF_BEGIN);
00758 } else if ((event_end & 0x80) && (rtp->lastevent != seqno) && rtp->resp) {
00759 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00760 f->len = ast_tvdiff_ms(ast_samp2tv(samples, 8000), ast_tv(0, 0));
00761 rtp->resp = 0;
00762 rtp->lastevent = seqno;
00763 }
00764 }
00765
00766 rtp->dtmfcount = dtmftimeout;
00767 rtp->dtmfsamples = samples;
00768
00769 return f;
00770 }
00771
00772
00773
00774
00775
00776
00777
00778 static struct ast_frame *process_rfc3389(struct ast_rtp *rtp, unsigned char *data, int len)
00779 {
00780 struct ast_frame *f = NULL;
00781
00782
00783
00784 if (rtpdebug)
00785 ast_log(LOG_DEBUG, "- RTP 3389 Comfort noise event: Level %d (len = %d)\n", rtp->lastrxformat, len);
00786
00787 if (!(ast_test_flag(rtp, FLAG_3389_WARNING))) {
00788 ast_log(LOG_NOTICE, "Comfort noise support incomplete in Asterisk (RFC 3389). Please turn off on client if possible. Client IP: %s\n",
00789 ast_inet_ntoa(rtp->them.sin_addr));
00790 ast_set_flag(rtp, FLAG_3389_WARNING);
00791 }
00792
00793
00794 if (!len)
00795 return NULL;
00796 if (len < 24) {
00797 rtp->f.data = rtp->rawdata + AST_FRIENDLY_OFFSET;
00798 rtp->f.datalen = len - 1;
00799 rtp->f.offset = AST_FRIENDLY_OFFSET;
00800 memcpy(rtp->f.data, data + 1, len - 1);
00801 } else {
00802 rtp->f.data = NULL;
00803 rtp->f.offset = 0;
00804 rtp->f.datalen = 0;
00805 }
00806 rtp->f.frametype = AST_FRAME_CNG;
00807 rtp->f.subclass = data[0] & 0x7f;
00808 rtp->f.datalen = len - 1;
00809 rtp->f.samples = 0;
00810 rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
00811 f = &rtp->f;
00812 return f;
00813 }
00814
00815 static int rtpread(int *id, int fd, short events, void *cbdata)
00816 {
00817 struct ast_rtp *rtp = cbdata;
00818 struct ast_frame *f;
00819 f = ast_rtp_read(rtp);
00820 if (f) {
00821 if (rtp->callback)
00822 rtp->callback(rtp, f, rtp->data);
00823 }
00824 return 1;
00825 }
00826
00827 struct ast_frame *ast_rtcp_read(struct ast_rtp *rtp)
00828 {
00829 socklen_t len;
00830 int position, i, packetwords;
00831 int res;
00832 struct sockaddr_in sin;
00833 unsigned int rtcpdata[8192 + AST_FRIENDLY_OFFSET];
00834 unsigned int *rtcpheader;
00835 int pt;
00836 struct timeval now;
00837 unsigned int length;
00838 int rc;
00839 double rttsec;
00840 uint64_t rtt = 0;
00841 unsigned int dlsr;
00842 unsigned int lsr;
00843 unsigned int msw;
00844 unsigned int lsw;
00845 unsigned int comp;
00846 struct ast_frame *f = &ast_null_frame;
00847
00848 if (!rtp || !rtp->rtcp)
00849 return &ast_null_frame;
00850
00851 len = sizeof(sin);
00852
00853 res = recvfrom(rtp->rtcp->s, rtcpdata + AST_FRIENDLY_OFFSET, sizeof(rtcpdata) - sizeof(unsigned int) * AST_FRIENDLY_OFFSET,
00854 0, (struct sockaddr *)&sin, &len);
00855 rtcpheader = (unsigned int *)(rtcpdata + AST_FRIENDLY_OFFSET);
00856
00857 if (res < 0) {
00858 ast_assert(errno != EBADF);
00859 if (errno != EAGAIN) {
00860 ast_log(LOG_WARNING, "RTCP Read error: %s. Hanging up.\n", strerror(errno));
00861 return NULL;
00862 }
00863 return &ast_null_frame;
00864 }
00865
00866 packetwords = res / 4;
00867
00868 if (rtp->nat) {
00869
00870 if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
00871 (rtp->rtcp->them.sin_port != sin.sin_port)) {
00872 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
00873 if (option_debug || rtpdebug)
00874 ast_log(LOG_DEBUG, "RTCP NAT: Got RTCP from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00875 }
00876 }
00877
00878 if (option_debug)
00879 ast_log(LOG_DEBUG, "Got RTCP report of %d bytes\n", res);
00880
00881
00882 position = 0;
00883 while (position < packetwords) {
00884 i = position;
00885 length = ntohl(rtcpheader[i]);
00886 pt = (length & 0xff0000) >> 16;
00887 rc = (length & 0x1f000000) >> 24;
00888 length &= 0xffff;
00889
00890 if ((i + length) > packetwords) {
00891 ast_log(LOG_WARNING, "RTCP Read too short\n");
00892 return &ast_null_frame;
00893 }
00894
00895 if (rtcp_debug_test_addr(&sin)) {
00896 ast_verbose("\n\nGot RTCP from %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00897 ast_verbose("PT: %d(%s)\n", pt, (pt == 200) ? "Sender Report" : (pt == 201) ? "Receiver Report" : (pt == 192) ? "H.261 FUR" : "Unknown");
00898 ast_verbose("Reception reports: %d\n", rc);
00899 ast_verbose("SSRC of sender: %u\n", rtcpheader[i + 1]);
00900 }
00901
00902 i += 2;
00903
00904 switch (pt) {
00905 case RTCP_PT_SR:
00906 gettimeofday(&rtp->rtcp->rxlsr,NULL);
00907 rtp->rtcp->spc = ntohl(rtcpheader[i+3]);
00908 rtp->rtcp->soc = ntohl(rtcpheader[i + 4]);
00909 rtp->rtcp->themrxlsr = ((ntohl(rtcpheader[i]) & 0x0000ffff) << 16) | ((ntohl(rtcpheader[i + 1]) & 0xffff0000) >> 16);
00910
00911 if (rtcp_debug_test_addr(&sin)) {
00912 ast_verbose("NTP timestamp: %lu.%010lu\n", (unsigned long) ntohl(rtcpheader[i]), (unsigned long) ntohl(rtcpheader[i + 1]) * 4096);
00913 ast_verbose("RTP timestamp: %lu\n", (unsigned long) ntohl(rtcpheader[i + 2]));
00914 ast_verbose("SPC: %lu\tSOC: %lu\n", (unsigned long) ntohl(rtcpheader[i + 3]), (unsigned long) ntohl(rtcpheader[i + 4]));
00915 }
00916 i += 5;
00917 if (rc < 1)
00918 break;
00919
00920 case RTCP_PT_RR:
00921
00922
00923 gettimeofday(&now, NULL);
00924 timeval2ntp(now, &msw, &lsw);
00925 if (ntohl(rtcpheader[i + 4]) && ntohl(rtcpheader[i + 5])) {
00926 comp = ((msw & 0xffff) << 16) | ((lsw & 0xffff0000) >> 16);
00927 lsr = ntohl(rtcpheader[i + 4]);
00928 dlsr = ntohl(rtcpheader[i + 5]);
00929 rtt = comp - lsr - dlsr;
00930
00931
00932
00933 if (rtt < 4294) {
00934 rtt = (rtt * 1000000) >> 16;
00935 } else {
00936 rtt = (rtt * 1000) >> 16;
00937 rtt *= 1000;
00938 }
00939 rtt = rtt / 1000.;
00940 rttsec = rtt / 1000.;
00941
00942 if (comp - dlsr >= lsr) {
00943 rtp->rtcp->accumulated_transit += rttsec;
00944 rtp->rtcp->rtt = rttsec;
00945 if (rtp->rtcp->maxrtt<rttsec)
00946 rtp->rtcp->maxrtt = rttsec;
00947 if (rtp->rtcp->minrtt>rttsec)
00948 rtp->rtcp->minrtt = rttsec;
00949 } else if (rtcp_debug_test_addr(&sin)) {
00950 ast_verbose("Internal RTCP NTP clock skew detected: "
00951 "lsr=%u, now=%u, dlsr=%u (%d:%03dms), "
00952 "diff=%d\n",
00953 lsr, comp, dlsr, dlsr / 65536,
00954 (dlsr % 65536) * 1000 / 65536,
00955 dlsr - (comp - lsr));
00956 }
00957 }
00958
00959 rtp->rtcp->reported_jitter = ntohl(rtcpheader[i + 3]);
00960 rtp->rtcp->reported_lost = ntohl(rtcpheader[i + 1]) & 0xffffff;
00961 if (rtcp_debug_test_addr(&sin)) {
00962 ast_verbose(" Fraction lost: %ld\n", (((long) ntohl(rtcpheader[i + 1]) & 0xff000000) >> 24));
00963 ast_verbose(" Packets lost so far: %d\n", rtp->rtcp->reported_lost);
00964 ast_verbose(" Highest sequence number: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff));
00965 ast_verbose(" Sequence number cycles: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff) >> 16);
00966 ast_verbose(" Interarrival jitter: %u\n", rtp->rtcp->reported_jitter);
00967 ast_verbose(" Last SR(our NTP): %lu.%010lu\n",(unsigned long) ntohl(rtcpheader[i + 4]) >> 16,((unsigned long) ntohl(rtcpheader[i + 4]) << 16) * 4096);
00968 ast_verbose(" DLSR: %4.4f (sec)\n",ntohl(rtcpheader[i + 5])/65536.0);
00969 if (rtt)
00970 ast_verbose(" RTT: %lu(sec)\n", (unsigned long) rtt);
00971 }
00972 break;
00973 case RTCP_PT_FUR:
00974 if (rtcp_debug_test_addr(&sin))
00975 ast_verbose("Received an RTCP Fast Update Request\n");
00976 rtp->f.frametype = AST_FRAME_CONTROL;
00977 rtp->f.subclass = AST_CONTROL_VIDUPDATE;
00978 rtp->f.datalen = 0;
00979 rtp->f.samples = 0;
00980 rtp->f.mallocd = 0;
00981 rtp->f.src = "RTP";
00982 f = &rtp->f;
00983 break;
00984 case RTCP_PT_SDES:
00985 if (rtcp_debug_test_addr(&sin))
00986 ast_verbose("Received an SDES from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00987 break;
00988 case RTCP_PT_BYE:
00989 if (rtcp_debug_test_addr(&sin))
00990 ast_verbose("Received a BYE from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00991 break;
00992 default:
00993 if (option_debug)
00994 ast_log(LOG_DEBUG, "Unknown RTCP packet (pt=%d) received from %s:%d\n", pt, ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00995 break;
00996 }
00997 position += (length + 1);
00998 }
00999
01000 return f;
01001 }
01002
01003 static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int timestamp, int mark)
01004 {
01005 struct timeval now;
01006 double transit;
01007 double current_time;
01008 double d;
01009 double dtv;
01010 double prog;
01011
01012 if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) {
01013 gettimeofday(&rtp->rxcore, NULL);
01014 rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000;
01015
01016 rtp->seedrxts = timestamp;
01017 rtp->rxcore.tv_sec -= timestamp / 8000;
01018 rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
01019
01020 rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100;
01021 if (rtp->rxcore.tv_usec < 0) {
01022
01023 rtp->rxcore.tv_usec += 1000000;
01024 rtp->rxcore.tv_sec -= 1;
01025 }
01026 }
01027
01028 gettimeofday(&now,NULL);
01029
01030 tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000;
01031 tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125;
01032 if (tv->tv_usec >= 1000000) {
01033 tv->tv_usec -= 1000000;
01034 tv->tv_sec += 1;
01035 }
01036 prog = (double)((timestamp-rtp->seedrxts)/8000.);
01037 dtv = (double)rtp->drxcore + (double)(prog);
01038 current_time = (double)now.tv_sec + (double)now.tv_usec/1000000;
01039 transit = current_time - dtv;
01040 d = transit - rtp->rxtransit;
01041 rtp->rxtransit = transit;
01042 if (d<0)
01043 d=-d;
01044 rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
01045 if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
01046 rtp->rtcp->maxrxjitter = rtp->rxjitter;
01047 if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
01048 rtp->rtcp->minrxjitter = rtp->rxjitter;
01049 }
01050
01051
01052 static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, unsigned int *rtpheader, int len, int hdrlen)
01053 {
01054 int res = 0, payload = 0, bridged_payload = 0, mark;
01055 struct rtpPayloadType rtpPT;
01056 int reconstruct = ntohl(rtpheader[0]);
01057
01058
01059 payload = (reconstruct & 0x7f0000) >> 16;
01060 mark = (((reconstruct & 0x800000) >> 23) != 0);
01061
01062
01063 rtpPT = ast_rtp_lookup_pt(rtp, payload);
01064
01065
01066 if (!bridged->current_RTP_PT[payload].code)
01067 return -1;
01068
01069
01070 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) && !rtpPT.isAstFormat && rtpPT.code == AST_RTP_DTMF)
01071 return -1;
01072
01073
01074 bridged_payload = ast_rtp_lookup_code(bridged, rtpPT.isAstFormat, rtpPT.code);
01075
01076
01077 if (!ast_test_flag(rtp, FLAG_P2P_SENT_MARK)) {
01078 mark = 1;
01079 ast_set_flag(rtp, FLAG_P2P_SENT_MARK);
01080 }
01081
01082
01083 reconstruct &= 0xFF80FFFF;
01084 reconstruct |= (bridged_payload << 16);
01085 reconstruct |= (mark << 23);
01086 rtpheader[0] = htonl(reconstruct);
01087
01088
01089 res = sendto(bridged->s, (void *)rtpheader, len, 0, (struct sockaddr *)&bridged->them, sizeof(bridged->them));
01090 if (res < 0) {
01091 if (!bridged->nat || (bridged->nat && (ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
01092 ast_log(LOG_DEBUG, "RTP Transmission error of packet to %s:%d: %s\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port), strerror(errno));
01093 } else if (((ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(bridged, FLAG_NAT_INACTIVE_NOWARN)) {
01094 if (option_debug || rtpdebug)
01095 ast_log(LOG_DEBUG, "RTP NAT: Can't write RTP to private address %s:%d, waiting for other end to send audio...\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port));
01096 ast_set_flag(bridged, FLAG_NAT_INACTIVE_NOWARN);
01097 }
01098 return 0;
01099 } else if (rtp_debug_test_addr(&bridged->them))
01100 ast_verbose("Sent RTP P2P packet to %s:%u (type %-2.2d, len %-6.6u)\n", ast_inet_ntoa(bridged->them.sin_addr), ntohs(bridged->them.sin_port), bridged_payload, len - hdrlen);
01101
01102 return 0;
01103 }
01104
01105 struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
01106 {
01107 int res;
01108 struct sockaddr_in sin;
01109 socklen_t len;
01110 unsigned int seqno;
01111 int version;
01112 int payloadtype;
01113 int hdrlen = 12;
01114 int padding;
01115 int mark;
01116 int ext;
01117 int cc;
01118 unsigned int ssrc;
01119 unsigned int timestamp;
01120 unsigned int *rtpheader;
01121 struct rtpPayloadType rtpPT;
01122 struct ast_rtp *bridged = NULL;
01123 AST_LIST_HEAD_NOLOCK(, ast_frame) frames;
01124
01125
01126 if (rtp->sending_digit)
01127 ast_rtp_senddigit_continuation(rtp);
01128
01129 len = sizeof(sin);
01130
01131
01132 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01133 0, (struct sockaddr *)&sin, &len);
01134
01135 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01136 if (res < 0) {
01137 ast_assert(errno != EBADF);
01138 if (errno != EAGAIN) {
01139 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01140 return NULL;
01141 }
01142 return &ast_null_frame;
01143 }
01144
01145 if (res < hdrlen) {
01146 ast_log(LOG_WARNING, "RTP Read too short\n");
01147 return &ast_null_frame;
01148 }
01149
01150
01151 seqno = ntohl(rtpheader[0]);
01152
01153
01154 version = (seqno & 0xC0000000) >> 30;
01155 if (!version) {
01156 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01157 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01158 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01159 }
01160 return &ast_null_frame;
01161 }
01162
01163 #if 0
01164
01165 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01166 return &ast_null_frame;
01167 #endif
01168
01169
01170 if (rtp->nat) {
01171 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01172 (rtp->them.sin_port != sin.sin_port)) {
01173 rtp->them = sin;
01174 if (rtp->rtcp) {
01175 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01176 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01177 }
01178 rtp->rxseqno = 0;
01179 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01180 if (option_debug || rtpdebug)
01181 ast_log(LOG_DEBUG, "RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
01182 }
01183 }
01184
01185
01186 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01187 return &ast_null_frame;
01188
01189 if (version != 2)
01190 return &ast_null_frame;
01191
01192 payloadtype = (seqno & 0x7f0000) >> 16;
01193 padding = seqno & (1 << 29);
01194 mark = seqno & (1 << 23);
01195 ext = seqno & (1 << 28);
01196 cc = (seqno & 0xF000000) >> 24;
01197 seqno &= 0xffff;
01198 timestamp = ntohl(rtpheader[1]);
01199 ssrc = ntohl(rtpheader[2]);
01200
01201 AST_LIST_HEAD_INIT_NOLOCK(&frames);
01202
01203 if (rtp->rxssrc && rtp->rxssrc != ssrc) {
01204 struct ast_frame *f, srcupdate;
01205 srcupdate.frametype = AST_FRAME_CONTROL;
01206 srcupdate.subclass = AST_CONTROL_SRCCHANGE;
01207 if (!mark) {
01208 if (option_debug || rtpdebug)
01209 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01210 mark = 1;
01211 }
01212
01213 f = ast_frisolate(&srcupdate);
01214 AST_LIST_INSERT_TAIL(&frames, f, frame_list);
01215 }
01216
01217 rtp->rxssrc = ssrc;
01218
01219 if (padding) {
01220
01221 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01222 }
01223
01224 if (cc) {
01225
01226 hdrlen += cc*4;
01227 }
01228
01229 if (ext) {
01230
01231 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01232 hdrlen += 4;
01233 }
01234
01235 if (res < hdrlen) {
01236 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01237 return AST_LIST_FIRST(&frames) ? AST_LIST_FIRST(&frames) : &ast_null_frame;
01238 }
01239
01240 rtp->rxcount++;
01241
01242 if (rtp->rxcount==1) {
01243
01244 rtp->seedrxseqno = seqno;
01245 }
01246
01247
01248 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01249
01250 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01251 }
01252 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01253 rtp->cycles += RTP_SEQ_MOD;
01254
01255 rtp->lastrxseqno = seqno;
01256
01257 if (rtp->themssrc==0)
01258 rtp->themssrc = ntohl(rtpheader[2]);
01259
01260 if (rtp_debug_test_addr(&sin))
01261 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01262 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01263
01264 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01265 if (!rtpPT.isAstFormat) {
01266 struct ast_frame *f = NULL;
01267
01268
01269 if (rtpPT.code == AST_RTP_DTMF) {
01270
01271 if (rtp_debug_test_addr(&sin)) {
01272 unsigned char *data;
01273 unsigned int event;
01274 unsigned int event_end;
01275 unsigned int duration;
01276 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01277 event = ntohl(*((unsigned int *)(data)));
01278 event >>= 24;
01279 event_end = ntohl(*((unsigned int *)(data)));
01280 event_end <<= 8;
01281 event_end >>= 24;
01282 duration = ntohl(*((unsigned int *)(data)));
01283 duration &= 0xFFFF;
01284 ast_verbose("Got RTP RFC2833 from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u, mark %d, event %08x, end %d, duration %-5.5d) \n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp, res - hdrlen, (mark?1:0), event, ((event_end & 0x80)?1:0), duration);
01285 }
01286 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01287 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01288
01289 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01290 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01291 rtp->lastevent = seqno;
01292 }
01293 } else if (rtpPT.code == AST_RTP_CN) {
01294
01295 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01296 } else {
01297 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01298 }
01299 if (f) {
01300 AST_LIST_INSERT_TAIL(&frames, f, frame_list);
01301 return AST_LIST_FIRST(&frames);
01302 }
01303 return &ast_null_frame;
01304 }
01305 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01306 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01307
01308 if (!rtp->lastrxts)
01309 rtp->lastrxts = timestamp;
01310
01311 rtp->rxseqno = seqno;
01312
01313
01314 rtp->lastrxts = timestamp;
01315
01316 rtp->f.mallocd = 0;
01317 rtp->f.datalen = res - hdrlen;
01318 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01319 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01320 rtp->f.seqno = seqno;
01321 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01322 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01323 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01324 ast_frame_byteswap_be(&rtp->f);
01325 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01326
01327 ast_set_flag(&rtp->f, AST_FRFLAG_HAS_TIMING_INFO);
01328 rtp->f.ts = timestamp / 8;
01329 rtp->f.len = rtp->f.samples / (ast_format_rate(rtp->f.subclass) / 1000);
01330 } else {
01331
01332 if (!rtp->lastividtimestamp)
01333 rtp->lastividtimestamp = timestamp;
01334 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01335 rtp->lastividtimestamp = timestamp;
01336 rtp->f.delivery.tv_sec = 0;
01337 rtp->f.delivery.tv_usec = 0;
01338 if (mark)
01339 rtp->f.subclass |= 0x1;
01340
01341 }
01342 rtp->f.src = "RTP";
01343 return &rtp->f;
01344 }
01345
01346
01347
01348 static struct {
01349 struct rtpPayloadType payloadType;
01350 char* type;
01351 char* subtype;
01352 } mimeTypes[] = {
01353 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01354 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01355 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01356 {{1, AST_FORMAT_ULAW}, "audio", "G711U"},
01357 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01358 {{1, AST_FORMAT_ALAW}, "audio", "G711A"},
01359 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01360 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01361 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01362 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01363 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01364 {{1, AST_FORMAT_G729A}, "audio", "G729A"},
01365 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01366 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01367 {{1, AST_FORMAT_G722}, "audio", "G722"},
01368 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01369 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01370 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01371 {{0, AST_RTP_CN}, "audio", "CN"},
01372 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01373 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01374 {{1, AST_FORMAT_H261}, "video", "H261"},
01375 {{1, AST_FORMAT_H263}, "video", "H263"},
01376 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01377 {{1, AST_FORMAT_H264}, "video", "H264"},
01378 };
01379
01380
01381
01382
01383 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01384 [0] = {1, AST_FORMAT_ULAW},
01385 #ifdef USE_DEPRECATED_G726
01386 [2] = {1, AST_FORMAT_G726},
01387 #endif
01388 [3] = {1, AST_FORMAT_GSM},
01389 [4] = {1, AST_FORMAT_G723_1},
01390 [5] = {1, AST_FORMAT_ADPCM},
01391 [6] = {1, AST_FORMAT_ADPCM},
01392 [7] = {1, AST_FORMAT_LPC10},
01393 [8] = {1, AST_FORMAT_ALAW},
01394 [9] = {1, AST_FORMAT_G722},
01395 [10] = {1, AST_FORMAT_SLINEAR},
01396 [11] = {1, AST_FORMAT_SLINEAR},
01397 [13] = {0, AST_RTP_CN},
01398 [16] = {1, AST_FORMAT_ADPCM},
01399 [17] = {1, AST_FORMAT_ADPCM},
01400 [18] = {1, AST_FORMAT_G729A},
01401 [19] = {0, AST_RTP_CN},
01402 [26] = {1, AST_FORMAT_JPEG},
01403 [31] = {1, AST_FORMAT_H261},
01404 [34] = {1, AST_FORMAT_H263},
01405 [103] = {1, AST_FORMAT_H263_PLUS},
01406 [97] = {1, AST_FORMAT_ILBC},
01407 [99] = {1, AST_FORMAT_H264},
01408 [101] = {0, AST_RTP_DTMF},
01409 [110] = {1, AST_FORMAT_SPEEX},
01410 [111] = {1, AST_FORMAT_G726},
01411 [112] = {1, AST_FORMAT_G726_AAL2},
01412 [121] = {0, AST_RTP_CISCO_DTMF},
01413 };
01414
01415 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01416 {
01417 int i;
01418
01419 if (!rtp)
01420 return;
01421
01422 ast_mutex_lock(&rtp->bridge_lock);
01423
01424 for (i = 0; i < MAX_RTP_PT; ++i) {
01425 rtp->current_RTP_PT[i].isAstFormat = 0;
01426 rtp->current_RTP_PT[i].code = 0;
01427 }
01428
01429 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01430 rtp->rtp_lookup_code_cache_code = 0;
01431 rtp->rtp_lookup_code_cache_result = 0;
01432
01433 ast_mutex_unlock(&rtp->bridge_lock);
01434 }
01435
01436 void ast_rtp_pt_default(struct ast_rtp* rtp)
01437 {
01438 int i;
01439
01440 ast_mutex_lock(&rtp->bridge_lock);
01441
01442
01443 for (i = 0; i < MAX_RTP_PT; ++i) {
01444 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01445 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01446 }
01447
01448 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01449 rtp->rtp_lookup_code_cache_code = 0;
01450 rtp->rtp_lookup_code_cache_result = 0;
01451
01452 ast_mutex_unlock(&rtp->bridge_lock);
01453 }
01454
01455 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01456 {
01457 unsigned int i;
01458
01459 ast_mutex_lock(&dest->bridge_lock);
01460 ast_mutex_lock(&src->bridge_lock);
01461
01462 for (i=0; i < MAX_RTP_PT; ++i) {
01463 dest->current_RTP_PT[i].isAstFormat =
01464 src->current_RTP_PT[i].isAstFormat;
01465 dest->current_RTP_PT[i].code =
01466 src->current_RTP_PT[i].code;
01467 }
01468 dest->rtp_lookup_code_cache_isAstFormat = 0;
01469 dest->rtp_lookup_code_cache_code = 0;
01470 dest->rtp_lookup_code_cache_result = 0;
01471
01472 ast_mutex_unlock(&src->bridge_lock);
01473 ast_mutex_unlock(&dest->bridge_lock);
01474 }
01475
01476
01477 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01478 {
01479 struct ast_rtp_protocol *cur = NULL;
01480
01481 AST_LIST_LOCK(&protos);
01482 AST_LIST_TRAVERSE(&protos, cur, list) {
01483 if (cur->type == chan->tech->type)
01484 break;
01485 }
01486 AST_LIST_UNLOCK(&protos);
01487
01488 return cur;
01489 }
01490
01491 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01492 {
01493 struct ast_rtp *destp = NULL, *srcp = NULL;
01494 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01495 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01496 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01497 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01498 int srccodec, destcodec, nat_active = 0;
01499
01500
01501 ast_channel_lock(dest);
01502 if (src) {
01503 while(ast_channel_trylock(src)) {
01504 ast_channel_unlock(dest);
01505 usleep(1);
01506 ast_channel_lock(dest);
01507 }
01508 }
01509
01510
01511 destpr = get_proto(dest);
01512 if (src)
01513 srcpr = get_proto(src);
01514 if (!destpr) {
01515 if (option_debug)
01516 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01517 ast_channel_unlock(dest);
01518 if (src)
01519 ast_channel_unlock(src);
01520 return 0;
01521 }
01522 if (!srcpr) {
01523 if (option_debug)
01524 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01525 ast_channel_unlock(dest);
01526 if (src)
01527 ast_channel_unlock(src);
01528 return 0;
01529 }
01530
01531
01532 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01533 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01534 if (srcpr) {
01535 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01536 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01537 }
01538
01539
01540 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01541
01542 ast_channel_unlock(dest);
01543 if (src)
01544 ast_channel_unlock(src);
01545 return 0;
01546 }
01547 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01548 srccodec = srcpr->get_codec(src);
01549 else
01550 srccodec = 0;
01551 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01552 destcodec = destpr->get_codec(dest);
01553 else
01554 destcodec = 0;
01555
01556 if (!(srccodec & destcodec)) {
01557 ast_channel_unlock(dest);
01558 if (src)
01559 ast_channel_unlock(src);
01560 return 0;
01561 }
01562
01563 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01564 srcp = NULL;
01565
01566 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01567 nat_active = 1;
01568
01569 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01570 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01571 ast_channel_unlock(dest);
01572 if (src)
01573 ast_channel_unlock(src);
01574 if (option_debug)
01575 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01576 return 1;
01577 }
01578
01579 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01580 {
01581 struct ast_rtp *destp = NULL, *srcp = NULL;
01582 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01583 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01584 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01585 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01586 int srccodec, destcodec;
01587
01588
01589 ast_channel_lock(dest);
01590 while(ast_channel_trylock(src)) {
01591 ast_channel_unlock(dest);
01592 usleep(1);
01593 ast_channel_lock(dest);
01594 }
01595
01596
01597 if (!(destpr = get_proto(dest))) {
01598 if (option_debug)
01599 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01600 ast_channel_unlock(dest);
01601 ast_channel_unlock(src);
01602 return 0;
01603 }
01604 if (!(srcpr = get_proto(src))) {
01605 if (option_debug)
01606 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01607 ast_channel_unlock(dest);
01608 ast_channel_unlock(src);
01609 return 0;
01610 }
01611
01612
01613 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01614 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01615 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01616 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01617
01618
01619 if (srcpr->get_codec)
01620 srccodec = srcpr->get_codec(src);
01621 else
01622 srccodec = 0;
01623 if (destpr->get_codec)
01624 destcodec = destpr->get_codec(dest);
01625 else
01626 destcodec = 0;
01627
01628
01629 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01630
01631 ast_channel_unlock(dest);
01632 ast_channel_unlock(src);
01633 return 0;
01634 }
01635 ast_rtp_pt_copy(destp, srcp);
01636 if (vdestp && vsrcp)
01637 ast_rtp_pt_copy(vdestp, vsrcp);
01638 if (media) {
01639
01640 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01641 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01642 }
01643 ast_channel_unlock(dest);
01644 ast_channel_unlock(src);
01645 if (option_debug)
01646 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01647 return 1;
01648 }
01649
01650
01651
01652
01653
01654 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01655 {
01656 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01657 return;
01658
01659 ast_mutex_lock(&rtp->bridge_lock);
01660 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01661 ast_mutex_unlock(&rtp->bridge_lock);
01662 }
01663
01664
01665
01666 void ast_rtp_unset_m_type(struct ast_rtp* rtp, int pt)
01667 {
01668 if (pt < 0 || pt > MAX_RTP_PT)
01669 return;
01670
01671 ast_mutex_lock(&rtp->bridge_lock);
01672 rtp->current_RTP_PT[pt].isAstFormat = 0;
01673 rtp->current_RTP_PT[pt].code = 0;
01674 ast_mutex_unlock(&rtp->bridge_lock);
01675 }
01676
01677
01678
01679
01680
01681 int ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01682 char *mimeType, char *mimeSubtype,
01683 enum ast_rtp_options options)
01684 {
01685 unsigned int i;
01686 int found = 0;
01687
01688 if (pt < 0 || pt > MAX_RTP_PT)
01689 return -1;
01690
01691 ast_mutex_lock(&rtp->bridge_lock);
01692
01693 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01694 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01695 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01696 found = 1;
01697 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01698 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01699 mimeTypes[i].payloadType.isAstFormat &&
01700 (options & AST_RTP_OPT_G726_NONSTANDARD))
01701 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01702 break;
01703 }
01704 }
01705
01706 ast_mutex_unlock(&rtp->bridge_lock);
01707
01708 return (found ? 0 : -1);
01709 }
01710
01711
01712
01713 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01714 int* astFormats, int* nonAstFormats)
01715 {
01716 int pt;
01717
01718 ast_mutex_lock(&rtp->bridge_lock);
01719
01720 *astFormats = *nonAstFormats = 0;
01721 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01722 if (rtp->current_RTP_PT[pt].isAstFormat) {
01723 *astFormats |= rtp->current_RTP_PT[pt].code;
01724 } else {
01725 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01726 }
01727 }
01728
01729 ast_mutex_unlock(&rtp->bridge_lock);
01730
01731 return;
01732 }
01733
01734 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01735 {
01736 struct rtpPayloadType result;
01737
01738 result.isAstFormat = result.code = 0;
01739
01740 if (pt < 0 || pt > MAX_RTP_PT)
01741 return result;
01742
01743
01744 ast_mutex_lock(&rtp->bridge_lock);
01745 result = rtp->current_RTP_PT[pt];
01746 ast_mutex_unlock(&rtp->bridge_lock);
01747
01748
01749 if (!result.code)
01750 result = static_RTP_PT[pt];
01751
01752 return result;
01753 }
01754
01755
01756 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01757 {
01758 int pt = 0;
01759
01760 ast_mutex_lock(&rtp->bridge_lock);
01761
01762 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01763 code == rtp->rtp_lookup_code_cache_code) {
01764
01765 pt = rtp->rtp_lookup_code_cache_result;
01766 ast_mutex_unlock(&rtp->bridge_lock);
01767 return pt;
01768 }
01769
01770
01771 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01772 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01773 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01774 rtp->rtp_lookup_code_cache_code = code;
01775 rtp->rtp_lookup_code_cache_result = pt;
01776 ast_mutex_unlock(&rtp->bridge_lock);
01777 return pt;
01778 }
01779 }
01780
01781
01782 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01783 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01784 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01785 rtp->rtp_lookup_code_cache_code = code;
01786 rtp->rtp_lookup_code_cache_result = pt;
01787 ast_mutex_unlock(&rtp->bridge_lock);
01788 return pt;
01789 }
01790 }
01791
01792 ast_mutex_unlock(&rtp->bridge_lock);
01793
01794 return -1;
01795 }
01796
01797 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01798 enum ast_rtp_options options)
01799 {
01800 unsigned int i;
01801
01802 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01803 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01804 if (isAstFormat &&
01805 (code == AST_FORMAT_G726_AAL2) &&
01806 (options & AST_RTP_OPT_G726_NONSTANDARD))
01807 return "G726-32";
01808 else
01809 return mimeTypes[i].subtype;
01810 }
01811 }
01812
01813 return "";
01814 }
01815
01816 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01817 const int isAstFormat, enum ast_rtp_options options)
01818 {
01819 int format;
01820 unsigned len;
01821 char *end = buf;
01822 char *start = buf;
01823
01824 if (!buf || !size)
01825 return NULL;
01826
01827 snprintf(end, size, "0x%x (", capability);
01828
01829 len = strlen(end);
01830 end += len;
01831 size -= len;
01832 start = end;
01833
01834 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01835 if (capability & format) {
01836 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01837
01838 snprintf(end, size, "%s|", name);
01839 len = strlen(end);
01840 end += len;
01841 size -= len;
01842 }
01843 }
01844
01845 if (start == end)
01846 snprintf(start, size, "nothing)");
01847 else if (size > 1)
01848 *(end -1) = ')';
01849
01850 return buf;
01851 }
01852
01853 static int rtp_socket(void)
01854 {
01855 int s;
01856 long flags;
01857 s = socket(AF_INET, SOCK_DGRAM, 0);
01858 if (s > -1) {
01859 flags = fcntl(s, F_GETFL);
01860 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01861 #ifdef SO_NO_CHECK
01862 if (nochecksums)
01863 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01864 #endif
01865 }
01866 return s;
01867 }
01868
01869
01870
01871
01872
01873
01874 static struct ast_rtcp *ast_rtcp_new(void)
01875 {
01876 struct ast_rtcp *rtcp;
01877
01878 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01879 return NULL;
01880 rtcp->s = rtp_socket();
01881 rtcp->us.sin_family = AF_INET;
01882 rtcp->them.sin_family = AF_INET;
01883 rtcp->schedid = -1;
01884
01885 if (rtcp->s < 0) {
01886 free(rtcp);
01887 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01888 return NULL;
01889 }
01890
01891 return rtcp;
01892 }
01893
01894
01895
01896
01897
01898 void ast_rtp_new_init(struct ast_rtp *rtp)
01899 {
01900 ast_mutex_init(&rtp->bridge_lock);
01901
01902 rtp->them.sin_family = AF_INET;
01903 rtp->us.sin_family = AF_INET;
01904 rtp->ssrc = ast_random();
01905 rtp->seqno = ast_random() & 0xffff;
01906 ast_set_flag(rtp, FLAG_HAS_DTMF);
01907
01908 return;
01909 }
01910
01911 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01912 {
01913 struct ast_rtp *rtp;
01914 int x;
01915 int first;
01916 int startplace;
01917
01918 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01919 return NULL;
01920
01921 ast_rtp_new_init(rtp);
01922
01923 rtp->s = rtp_socket();
01924 if (rtp->s < 0) {
01925 free(rtp);
01926 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01927 return NULL;
01928 }
01929 if (sched && rtcpenable) {
01930 rtp->sched = sched;
01931 rtp->rtcp = ast_rtcp_new();
01932 }
01933
01934
01935 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01936 x = x & ~1;
01937
01938 startplace = x;
01939
01940 for (;;) {
01941
01942 rtp->us.sin_port = htons(x);
01943 rtp->us.sin_addr = addr;
01944
01945 if (rtp->rtcp) {
01946 rtp->rtcp->us.sin_port = htons(x + 1);
01947 rtp->rtcp->us.sin_addr = addr;
01948 }
01949
01950 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01951 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01952 break;
01953 if (!first) {
01954
01955 close(rtp->s);
01956 rtp->s = rtp_socket();
01957 }
01958 if (errno != EADDRINUSE) {
01959
01960 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01961 close(rtp->s);
01962 if (rtp->rtcp) {
01963 close(rtp->rtcp->s);
01964 free(rtp->rtcp);
01965 }
01966 free(rtp);
01967 return NULL;
01968 }
01969
01970 x += 2;
01971
01972 if (x > rtpend)
01973
01974 x = (rtpstart + 1) & ~1;
01975
01976 if (x == startplace) {
01977
01978 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01979 close(rtp->s);
01980 if (rtp->rtcp) {
01981 close(rtp->rtcp->s);
01982 free(rtp->rtcp);
01983 }
01984 free(rtp);
01985 return NULL;
01986 }
01987 }
01988 rtp->sched = sched;
01989 rtp->io = io;
01990 if (callbackmode) {
01991 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01992 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01993 }
01994 ast_rtp_pt_default(rtp);
01995 return rtp;
01996 }
01997
01998 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01999 {
02000 struct in_addr ia;
02001
02002 memset(&ia, 0, sizeof(ia));
02003 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
02004 }
02005
02006 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
02007 {
02008 int res;
02009
02010 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
02011 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
02012 return res;
02013 }
02014
02015 void ast_rtp_update_source(struct ast_rtp *rtp)
02016 {
02017 rtp->set_marker_bit = 1;
02018 return;
02019 }
02020
02021 void ast_rtp_change_source(struct ast_rtp *rtp)
02022 {
02023 unsigned int ssrc = ast_random();
02024
02025 rtp->set_marker_bit = 1;
02026 ast_log(LOG_DEBUG, "Changing ssrc from %u to %u due to a source change\n", rtp->ssrc, ssrc);
02027
02028 rtp->ssrc = ssrc;
02029 }
02030
02031 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02032 {
02033 rtp->them.sin_port = them->sin_port;
02034 rtp->them.sin_addr = them->sin_addr;
02035 if (rtp->rtcp) {
02036 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
02037 rtp->rtcp->them.sin_addr = them->sin_addr;
02038 }
02039 rtp->rxseqno = 0;
02040 }
02041
02042 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02043 {
02044 if ((them->sin_family != AF_INET) ||
02045 (them->sin_port != rtp->them.sin_port) ||
02046 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
02047 them->sin_family = AF_INET;
02048 them->sin_port = rtp->them.sin_port;
02049 them->sin_addr = rtp->them.sin_addr;
02050 return 1;
02051 }
02052 return 0;
02053 }
02054
02055 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
02056 {
02057 *us = rtp->us;
02058 }
02059
02060 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02061 {
02062 struct ast_rtp *bridged = NULL;
02063
02064 ast_mutex_lock(&rtp->bridge_lock);
02065 bridged = rtp->bridged;
02066 ast_mutex_unlock(&rtp->bridge_lock);
02067
02068 return bridged;
02069 }
02070
02071 void ast_rtp_stop(struct ast_rtp *rtp)
02072 {
02073 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02074
02075 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02076 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02077 if (rtp->rtcp) {
02078 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02079 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02080 }
02081
02082 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02083 }
02084
02085 void ast_rtp_reset(struct ast_rtp *rtp)
02086 {
02087 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02088 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02089 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02090 rtp->lastts = 0;
02091 rtp->lastdigitts = 0;
02092 rtp->lastrxts = 0;
02093 rtp->lastividtimestamp = 0;
02094 rtp->lastovidtimestamp = 0;
02095 rtp->lasteventseqn = 0;
02096 rtp->lastevent = 0;
02097 rtp->lasttxformat = 0;
02098 rtp->lastrxformat = 0;
02099 rtp->dtmfcount = 0;
02100 rtp->dtmfsamples = 0;
02101 rtp->seqno = 0;
02102 rtp->rxseqno = 0;
02103 }
02104
02105 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02106 {
02107
02108
02109
02110
02111
02112
02113
02114
02115
02116
02117
02118
02119 if (qual && rtp) {
02120 qual->local_ssrc = rtp->ssrc;
02121 qual->local_jitter = rtp->rxjitter;
02122 qual->local_count = rtp->rxcount;
02123 qual->remote_ssrc = rtp->themssrc;
02124 qual->remote_count = rtp->txcount;
02125 if (rtp->rtcp) {
02126 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02127 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02128 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02129 qual->rtt = rtp->rtcp->rtt;
02130 }
02131 }
02132 if (rtp->rtcp) {
02133 snprintf(rtp->rtcp->quality, sizeof(rtp->rtcp->quality),
02134 "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f",
02135 rtp->ssrc,
02136 rtp->themssrc,
02137 rtp->rtcp->expected_prior - rtp->rtcp->received_prior,
02138 rtp->rxjitter,
02139 rtp->rxcount,
02140 (double)rtp->rtcp->reported_jitter / 65536.0,
02141 rtp->txcount,
02142 rtp->rtcp->reported_lost,
02143 rtp->rtcp->rtt);
02144 return rtp->rtcp->quality;
02145 } else
02146 return "<Unknown> - RTP/RTCP has already been destroyed";
02147 }
02148
02149 void ast_rtp_destroy(struct ast_rtp *rtp)
02150 {
02151 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02152
02153 ast_verbose(" RTP-stats\n");
02154 ast_verbose("* Our Receiver:\n");
02155 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02156 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02157 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02158 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02159 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02160 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02161 ast_verbose("* Our Sender:\n");
02162 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02163 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02164 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02165 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter / (unsigned int)65536.0);
02166 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02167 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02168 }
02169
02170 if (rtp->smoother)
02171 ast_smoother_free(rtp->smoother);
02172 if (rtp->ioid)
02173 ast_io_remove(rtp->io, rtp->ioid);
02174 if (rtp->s > -1)
02175 close(rtp->s);
02176 if (rtp->rtcp) {
02177 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02178 close(rtp->rtcp->s);
02179 free(rtp->rtcp);
02180 rtp->rtcp=NULL;
02181 }
02182
02183 ast_mutex_destroy(&rtp->bridge_lock);
02184
02185 free(rtp);
02186 }
02187
02188 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02189 {
02190 struct timeval t;
02191 long ms;
02192 if (ast_tvzero(rtp->txcore)) {
02193 rtp->txcore = ast_tvnow();
02194
02195 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02196 }
02197
02198 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02199 ms = ast_tvdiff_ms(t, rtp->txcore);
02200 if (ms < 0)
02201 ms = 0;
02202
02203 rtp->txcore = t;
02204 return (unsigned int) ms;
02205 }
02206
02207
02208 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02209 {
02210 unsigned int *rtpheader;
02211 int hdrlen = 12, res = 0, i = 0, payload = 0;
02212 char data[256];
02213
02214 if ((digit <= '9') && (digit >= '0'))
02215 digit -= '0';
02216 else if (digit == '*')
02217 digit = 10;
02218 else if (digit == '#')
02219 digit = 11;
02220 else if ((digit >= 'A') && (digit <= 'D'))
02221 digit = digit - 'A' + 12;
02222 else if ((digit >= 'a') && (digit <= 'd'))
02223 digit = digit - 'a' + 12;
02224 else {
02225 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02226 return 0;
02227 }
02228
02229
02230 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02231 return 0;
02232
02233 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02234
02235 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02236 rtp->send_duration = 160;
02237
02238
02239 rtpheader = (unsigned int *)data;
02240 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02241 rtpheader[1] = htonl(rtp->lastdigitts);
02242 rtpheader[2] = htonl(rtp->ssrc);
02243
02244 for (i = 0; i < 2; i++) {
02245 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02246 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02247 if (res < 0)
02248 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02249 ast_inet_ntoa(rtp->them.sin_addr),
02250 ntohs(rtp->them.sin_port), strerror(errno));
02251 if (rtp_debug_test_addr(&rtp->them))
02252 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02253 ast_inet_ntoa(rtp->them.sin_addr),
02254 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02255
02256 rtp->seqno++;
02257
02258 rtp->send_duration += 160;
02259
02260 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02261 }
02262
02263
02264 rtp->sending_digit = 1;
02265 rtp->send_digit = digit;
02266 rtp->send_payload = payload;
02267
02268 return 0;
02269 }
02270
02271
02272 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02273 {
02274 unsigned int *rtpheader;
02275 int hdrlen = 12, res = 0;
02276 char data[256];
02277
02278 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02279 return 0;
02280
02281
02282 rtpheader = (unsigned int *)data;
02283 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02284 rtpheader[1] = htonl(rtp->lastdigitts);
02285 rtpheader[2] = htonl(rtp->ssrc);
02286 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02287 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02288
02289
02290 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02291 if (res < 0)
02292 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02293 ast_inet_ntoa(rtp->them.sin_addr),
02294 ntohs(rtp->them.sin_port), strerror(errno));
02295 if (rtp_debug_test_addr(&rtp->them))
02296 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02297 ast_inet_ntoa(rtp->them.sin_addr),
02298 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02299
02300
02301 rtp->seqno++;
02302
02303 rtp->send_duration += 160;
02304
02305 return 0;
02306 }
02307
02308
02309 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02310 {
02311 unsigned int *rtpheader;
02312 int hdrlen = 12, res = 0, i = 0;
02313 char data[256];
02314
02315
02316 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02317 return 0;
02318
02319 if ((digit <= '9') && (digit >= '0'))
02320 digit -= '0';
02321 else if (digit == '*')
02322 digit = 10;
02323 else if (digit == '#')
02324 digit = 11;
02325 else if ((digit >= 'A') && (digit <= 'D'))
02326 digit = digit - 'A' + 12;
02327 else if ((digit >= 'a') && (digit <= 'd'))
02328 digit = digit - 'a' + 12;
02329 else {
02330 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02331 return 0;
02332 }
02333
02334 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02335
02336 rtpheader = (unsigned int *)data;
02337 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02338 rtpheader[1] = htonl(rtp->lastdigitts);
02339 rtpheader[2] = htonl(rtp->ssrc);
02340 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02341
02342 rtpheader[3] |= htonl((1 << 23));
02343 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02344
02345 for (i = 0; i < 3; i++) {
02346 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02347 if (res < 0)
02348 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02349 ast_inet_ntoa(rtp->them.sin_addr),
02350 ntohs(rtp->them.sin_port), strerror(errno));
02351 if (rtp_debug_test_addr(&rtp->them))
02352 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02353 ast_inet_ntoa(rtp->them.sin_addr),
02354 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02355 }
02356 rtp->sending_digit = 0;
02357 rtp->send_digit = 0;
02358
02359 rtp->lastdigitts += 960;
02360 rtp->seqno++;
02361
02362 return res;
02363 }
02364
02365
02366 int ast_rtcp_send_h261fur(void *data)
02367 {
02368 struct ast_rtp *rtp = data;
02369 int res;
02370
02371 rtp->rtcp->sendfur = 1;
02372 res = ast_rtcp_write(data);
02373
02374 return res;
02375 }
02376
02377
02378 static int ast_rtcp_write_sr(const void *data)
02379 {
02380 struct ast_rtp *rtp = (struct ast_rtp *)data;
02381 int res;
02382 int len = 0;
02383 struct timeval now;
02384 unsigned int now_lsw;
02385 unsigned int now_msw;
02386 unsigned int *rtcpheader;
02387 unsigned int lost;
02388 unsigned int extended;
02389 unsigned int expected;
02390 unsigned int expected_interval;
02391 unsigned int received_interval;
02392 int lost_interval;
02393 int fraction;
02394 struct timeval dlsr;
02395 char bdata[512];
02396
02397
02398 if (!rtp || !rtp->rtcp)
02399 return 0;
02400
02401 if (!rtp->rtcp->them.sin_addr.s_addr) {
02402 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02403 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02404 return 0;
02405 }
02406
02407 gettimeofday(&now, NULL);
02408 timeval2ntp(now, &now_msw, &now_lsw);
02409 rtcpheader = (unsigned int *)bdata;
02410 rtcpheader[1] = htonl(rtp->ssrc);
02411 rtcpheader[2] = htonl(now_msw);
02412 rtcpheader[3] = htonl(now_lsw);
02413 rtcpheader[4] = htonl(rtp->lastts);
02414 rtcpheader[5] = htonl(rtp->txcount);
02415 rtcpheader[6] = htonl(rtp->txoctetcount);
02416 len += 28;
02417
02418 extended = rtp->cycles + rtp->lastrxseqno;
02419 expected = extended - rtp->seedrxseqno + 1;
02420 if (rtp->rxcount > expected)
02421 expected += rtp->rxcount - expected;
02422 lost = expected - rtp->rxcount;
02423 expected_interval = expected - rtp->rtcp->expected_prior;
02424 rtp->rtcp->expected_prior = expected;
02425 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02426 rtp->rtcp->received_prior = rtp->rxcount;
02427 lost_interval = expected_interval - received_interval;
02428 if (expected_interval == 0 || lost_interval <= 0)
02429 fraction = 0;
02430 else
02431 fraction = (lost_interval << 8) / expected_interval;
02432 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02433 rtcpheader[7] = htonl(rtp->themssrc);
02434 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02435 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02436 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02437 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02438 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02439 len += 24;
02440
02441 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02442
02443 if (rtp->rtcp->sendfur) {
02444 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02445 rtcpheader[14] = htonl(rtp->ssrc);
02446 len += 8;
02447 rtp->rtcp->sendfur = 0;
02448 }
02449
02450
02451
02452 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02453 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02454 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02455 len += 12;
02456
02457 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02458 if (res < 0) {
02459 ast_log(LOG_ERROR, "RTCP SR transmission error to %s:%d, rtcp halted %s\n",ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port), strerror(errno));
02460 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02461 return 0;
02462 }
02463
02464
02465 gettimeofday(&rtp->rtcp->txlsr, NULL);
02466 rtp->rtcp->sr_count++;
02467
02468 rtp->rtcp->lastsrtxcount = rtp->txcount;
02469
02470 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02471 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02472 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02473 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02474 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02475 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02476 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02477 ast_verbose(" Report block:\n");
02478 ast_verbose(" Fraction lost: %u\n", fraction);
02479 ast_verbose(" Cumulative loss: %u\n", lost);
02480 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02481 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02482 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02483 }
02484 return res;
02485 }
02486
02487
02488 static int ast_rtcp_write_rr(const void *data)
02489 {
02490 struct ast_rtp *rtp = (struct ast_rtp *)data;
02491 int res;
02492 int len = 32;
02493 unsigned int lost;
02494 unsigned int extended;
02495 unsigned int expected;
02496 unsigned int expected_interval;
02497 unsigned int received_interval;
02498 int lost_interval;
02499 struct timeval now;
02500 unsigned int *rtcpheader;
02501 char bdata[1024];
02502 struct timeval dlsr;
02503 int fraction;
02504
02505 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02506 return 0;
02507
02508 if (!rtp->rtcp->them.sin_addr.s_addr) {
02509 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02510 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02511 return 0;
02512 }
02513
02514 extended = rtp->cycles + rtp->lastrxseqno;
02515 expected = extended - rtp->seedrxseqno + 1;
02516 lost = expected - rtp->rxcount;
02517 expected_interval = expected - rtp->rtcp->expected_prior;
02518 rtp->rtcp->expected_prior = expected;
02519 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02520 rtp->rtcp->received_prior = rtp->rxcount;
02521 lost_interval = expected_interval - received_interval;
02522 if (expected_interval == 0 || lost_interval <= 0)
02523 fraction = 0;
02524 else
02525 fraction = (lost_interval << 8) / expected_interval;
02526 gettimeofday(&now, NULL);
02527 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02528 rtcpheader = (unsigned int *)bdata;
02529 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02530 rtcpheader[1] = htonl(rtp->ssrc);
02531 rtcpheader[2] = htonl(rtp->themssrc);
02532 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02533 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02534 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02535 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02536 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02537
02538 if (rtp->rtcp->sendfur) {
02539 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02540 rtcpheader[9] = htonl(rtp->ssrc);
02541 len += 8;
02542 rtp->rtcp->sendfur = 0;
02543 }
02544
02545
02546
02547 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02548 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02549 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02550 len += 12;
02551
02552 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02553
02554 if (res < 0) {
02555 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02556
02557 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02558 return 0;
02559 }
02560
02561 rtp->rtcp->rr_count++;
02562
02563 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02564 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02565 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02566 " IA jitter: %.4f\n"
02567 " Their last SR: %u\n"
02568 " DLSR: %4.4f (sec)\n\n",
02569 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02570 ntohs(rtp->rtcp->them.sin_port),
02571 rtp->ssrc, rtp->themssrc, fraction, lost,
02572 rtp->rxjitter,
02573 rtp->rtcp->themrxlsr,
02574 (double)(ntohl(rtcpheader[7])/65536.0));
02575 }
02576
02577 return res;
02578 }
02579
02580
02581
02582
02583 static int ast_rtcp_write(const void *data)
02584 {
02585 struct ast_rtp *rtp = (struct ast_rtp *)data;
02586 int res;
02587
02588 if (!rtp || !rtp->rtcp)
02589 return 0;
02590
02591 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02592 res = ast_rtcp_write_sr(data);
02593 else
02594 res = ast_rtcp_write_rr(data);
02595
02596 return res;
02597 }
02598
02599
02600 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02601 {
02602 unsigned int *rtpheader;
02603 int hdrlen = 12;
02604 int res;
02605 int payload;
02606 char data[256];
02607 level = 127 - (level & 0x7f);
02608 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02609
02610
02611 if (!rtp->them.sin_addr.s_addr)
02612 return 0;
02613
02614 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02615
02616
02617 rtpheader = (unsigned int *)data;
02618 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02619 rtpheader[1] = htonl(rtp->lastts);
02620 rtpheader[2] = htonl(rtp->ssrc);
02621 data[12] = level;
02622 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02623 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02624 if (res <0)
02625 ast_log(LOG_ERROR, "RTP Comfort Noise Transmission error to %s:%d: %s\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), strerror(errno));
02626 if (rtp_debug_test_addr(&rtp->them))
02627 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02628 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02629
02630 }
02631 return 0;
02632 }
02633
02634 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02635 {
02636 unsigned char *rtpheader;
02637 int hdrlen = 12;
02638 int res;
02639 unsigned int ms;
02640 int pred;
02641 int mark = 0;
02642
02643 ms = calc_txstamp(rtp, &f->delivery);
02644
02645 if (f->frametype == AST_FRAME_VOICE) {
02646 pred = rtp->lastts + f->samples;
02647
02648
02649 rtp->lastts = rtp->lastts + ms * 8;
02650 if (ast_tvzero(f->delivery)) {
02651
02652
02653 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02654 rtp->lastts = pred;
02655 else {
02656 if (option_debug > 2)
02657 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02658 mark = 1;
02659 }
02660 }
02661 } else if (f->frametype == AST_FRAME_VIDEO) {
02662 mark = f->subclass & 0x1;
02663 pred = rtp->lastovidtimestamp + f->samples;
02664
02665 rtp->lastts = rtp->lastts + ms * 90;
02666
02667 if (ast_tvzero(f->delivery)) {
02668 if (abs(rtp->lastts - pred) < 7200) {
02669 rtp->lastts = pred;
02670 rtp->lastovidtimestamp += f->samples;
02671 } else {
02672 if (option_debug > 2)
02673 ast_log(LOG_DEBUG, "Difference is %d, ms is %d (%d), pred/ts/samples %d/%d/%d\n", abs(rtp->lastts - pred), ms, ms * 90, rtp->lastts, pred, f->samples);
02674 rtp->lastovidtimestamp = rtp->lastts;
02675 }
02676 }
02677 }
02678
02679
02680 if (rtp->set_marker_bit) {
02681 mark = 1;
02682 rtp->set_marker_bit = 0;
02683 }
02684
02685
02686
02687
02688 if (rtp->lastts > rtp->lastdigitts)
02689 rtp->lastdigitts = rtp->lastts;
02690
02691 if (ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO))
02692 rtp->lastts = f->ts * 8;
02693
02694
02695 rtpheader = (unsigned char *)(f->data - hdrlen);
02696
02697 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02698 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02699 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02700
02701 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02702 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02703 if (res <0) {
02704 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02705 ast_log(LOG_DEBUG, "RTP Transmission error of packet %d to %s:%d: %s\n", rtp->seqno, ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), strerror(errno));
02706 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02707
02708 if (option_debug || rtpdebug)
02709 ast_log(LOG_DEBUG, "RTP NAT: Can't write RTP to private address %s:%d, waiting for other end to send audio...\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
02710 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02711 }
02712 } else {
02713 rtp->txcount++;
02714 rtp->txoctetcount +=(res - hdrlen);
02715
02716 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02717 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02718 }
02719
02720 if (rtp_debug_test_addr(&rtp->them))
02721 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02722 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02723 }
02724
02725 rtp->seqno++;
02726
02727 return 0;
02728 }
02729
02730 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02731 {
02732 int x;
02733 for (x = 0; x < 32; x++) {
02734 rtp->pref.order[x] = prefs->order[x];
02735 rtp->pref.framing[x] = prefs->framing[x];
02736 }
02737 if (rtp->smoother)
02738 ast_smoother_free(rtp->smoother);
02739 rtp->smoother = NULL;
02740 return 0;
02741 }
02742
02743 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02744 {
02745 return &rtp->pref;
02746 }
02747
02748 int ast_rtp_codec_getformat(int pt)
02749 {
02750 if (pt < 0 || pt > MAX_RTP_PT)
02751 return 0;
02752
02753 if (static_RTP_PT[pt].isAstFormat)
02754 return static_RTP_PT[pt].code;
02755 else
02756 return 0;
02757 }
02758
02759 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02760 {
02761 struct ast_frame *f;
02762 int codec;
02763 int hdrlen = 12;
02764 int subclass;
02765
02766
02767
02768 if (!rtp->them.sin_addr.s_addr)
02769 return 0;
02770
02771
02772 if (!_f->datalen)
02773 return 0;
02774
02775
02776 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02777 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02778 return -1;
02779 }
02780
02781 subclass = _f->subclass;
02782 if (_f->frametype == AST_FRAME_VIDEO)
02783 subclass &= ~0x1;
02784
02785 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02786 if (codec < 0) {
02787 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02788 return -1;
02789 }
02790
02791 if (rtp->lasttxformat != subclass) {
02792
02793 if (option_debug)
02794 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02795 rtp->lasttxformat = subclass;
02796 if (rtp->smoother)
02797 ast_smoother_free(rtp->smoother);
02798 rtp->smoother = NULL;
02799 }
02800
02801 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX && subclass != AST_FORMAT_G723_1) {
02802 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02803 if (fmt.inc_ms) {
02804 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02805 ast_log(LOG_WARNING, "Unable to create smoother: format: %d ms: %d len: %d\n", subclass, fmt.cur_ms, ((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms));
02806 return -1;
02807 }
02808 if (fmt.flags)
02809 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02810 if (option_debug)
02811 ast_log(LOG_DEBUG, "Created smoother: format: %d ms: %d len: %d\n", subclass, fmt.cur_ms, ((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms));
02812 }
02813 }
02814 if (rtp->smoother) {
02815 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02816 ast_smoother_feed_be(rtp->smoother, _f);
02817 } else {
02818 ast_smoother_feed(rtp->smoother, _f);
02819 }
02820
02821 while ((f = ast_smoother_read(rtp->smoother)) && (f->data)) {
02822 if (f->subclass == AST_FORMAT_G722) {
02823
02824 f->samples /= 2;
02825 }
02826
02827 ast_rtp_raw_write(rtp, f, codec);
02828 }
02829 } else {
02830
02831 if (_f->offset < hdrlen) {
02832 f = ast_frdup(_f);
02833 } else {
02834 f = _f;
02835 }
02836 if (f->data) {
02837 if (f->subclass == AST_FORMAT_G722) {
02838
02839 f->samples /= 2;
02840 }
02841 ast_rtp_raw_write(rtp, f, codec);
02842 }
02843 if (f != _f)
02844 ast_frfree(f);
02845 }
02846
02847 return 0;
02848 }
02849
02850
02851 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02852 {
02853 AST_LIST_LOCK(&protos);
02854 AST_LIST_REMOVE(&protos, proto, list);
02855 AST_LIST_UNLOCK(&protos);
02856 }
02857
02858
02859 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02860 {
02861 struct ast_rtp_protocol *cur;
02862
02863 AST_LIST_LOCK(&protos);
02864 AST_LIST_TRAVERSE(&protos, cur, list) {
02865 if (!strcmp(cur->type, proto->type)) {
02866 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02867 AST_LIST_UNLOCK(&protos);
02868 return -1;
02869 }
02870 }
02871 AST_LIST_INSERT_HEAD(&protos, proto, list);
02872 AST_LIST_UNLOCK(&protos);
02873
02874 return 0;
02875 }
02876
02877
02878 static enum ast_bridge_result bridge_native_loop(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp *p0, struct ast_rtp *p1, struct ast_rtp *vp0, struct ast_rtp *vp1, struct ast_rtp_protocol *pr0, struct ast_rtp_protocol *pr1, int codec0, int codec1, int timeoutms, int flags, struct ast_frame **fo, struct ast_channel **rc, void *pvt0, void *pvt1)
02879 {
02880 struct ast_frame *fr = NULL;
02881 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02882 int oldcodec0 = codec0, oldcodec1 = codec1;
02883 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02884 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02885
02886
02887
02888
02889 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02890 ast_rtp_get_peer(p1, &ac1);
02891 if (vp1)
02892 ast_rtp_get_peer(vp1, &vac1);
02893 } else
02894 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02895
02896
02897 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02898 ast_rtp_get_peer(p0, &ac0);
02899 if (vp0)
02900 ast_rtp_get_peer(vp0, &vac0);
02901 } else
02902 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02903
02904
02905 ast_channel_unlock(c0);
02906 ast_channel_unlock(c1);
02907
02908
02909 cs[0] = c0;
02910 cs[1] = c1;
02911 cs[2] = NULL;
02912 for (;;) {
02913
02914 if ((c0->tech_pvt != pvt0) ||
02915 (c1->tech_pvt != pvt1) ||
02916 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
02917 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
02918 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02919 if (c0->tech_pvt == pvt0)
02920 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02921 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02922 if (c1->tech_pvt == pvt1)
02923 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02924 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02925 return AST_BRIDGE_RETRY;
02926 }
02927
02928
02929 ast_rtp_get_peer(p1, &t1);
02930 if (vp1)
02931 ast_rtp_get_peer(vp1, &vt1);
02932 if (pr1->get_codec)
02933 codec1 = pr1->get_codec(c1);
02934 ast_rtp_get_peer(p0, &t0);
02935 if (vp0)
02936 ast_rtp_get_peer(vp0, &vt0);
02937 if (pr0->get_codec)
02938 codec0 = pr0->get_codec(c0);
02939 if ((inaddrcmp(&t1, &ac1)) ||
02940 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02941 (codec1 != oldcodec1)) {
02942 if (option_debug > 1) {
02943 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02944 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02945 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02946 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02947 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02948 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02949 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02950 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02951 }
02952 if (pr0->set_rtp_peer(c0, t1.sin_addr.s_addr ? p1 : NULL, vt1.sin_addr.s_addr ? vp1 : NULL, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))
02953 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02954 memcpy(&ac1, &t1, sizeof(ac1));
02955 memcpy(&vac1, &vt1, sizeof(vac1));
02956 oldcodec1 = codec1;
02957 }
02958 if ((inaddrcmp(&t0, &ac0)) ||
02959 (vp0 && inaddrcmp(&vt0, &vac0))) {
02960 if (option_debug > 1) {
02961 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02962 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02963 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02964 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02965 }
02966 if (pr1->set_rtp_peer(c1, t0.sin_addr.s_addr ? p0 : NULL, vt0.sin_addr.s_addr ? vp0 : NULL, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))
02967 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02968 memcpy(&ac0, &t0, sizeof(ac0));
02969 memcpy(&vac0, &vt0, sizeof(vac0));
02970 oldcodec0 = codec0;
02971 }
02972
02973
02974 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02975 if (!timeoutms) {
02976 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02977 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02978 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02979 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02980 return AST_BRIDGE_RETRY;
02981 }
02982 if (option_debug)
02983 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02984 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02985 break;
02986 continue;
02987 }
02988 fr = ast_read(who);
02989 other = (who == c0) ? c1 : c0;
02990 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
02991 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02992 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02993
02994 *fo = fr;
02995 *rc = who;
02996 if (option_debug)
02997 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02998 if (c0->tech_pvt == pvt0)
02999 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
03000 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
03001 if (c1->tech_pvt == pvt1)
03002 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
03003 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
03004 return AST_BRIDGE_COMPLETE;
03005 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03006 if ((fr->subclass == AST_CONTROL_HOLD) ||
03007 (fr->subclass == AST_CONTROL_UNHOLD) ||
03008 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03009 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03010 if (fr->subclass == AST_CONTROL_HOLD) {
03011
03012 if (who == c0)
03013 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
03014 else
03015 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
03016 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03017
03018 if (who == c0)
03019 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
03020 else
03021 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
03022 }
03023
03024 ast_rtp_get_peer(p0, &t0);
03025 memcpy(&ac0, &t0, sizeof(ac0));
03026 ast_rtp_get_peer(p1, &t1);
03027 memcpy(&ac1, &t1, sizeof(ac1));
03028
03029 if (pr0->get_codec && c0->tech_pvt)
03030 oldcodec0 = codec0 = pr0->get_codec(c0);
03031 if (pr1->get_codec && c1->tech_pvt)
03032 oldcodec1 = codec1 = pr1->get_codec(c1);
03033 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03034 ast_frfree(fr);
03035 } else {
03036 *fo = fr;
03037 *rc = who;
03038 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03039 return AST_BRIDGE_COMPLETE;
03040 }
03041 } else {
03042 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03043 (fr->frametype == AST_FRAME_DTMF_END) ||
03044 (fr->frametype == AST_FRAME_VOICE) ||
03045 (fr->frametype == AST_FRAME_VIDEO) ||
03046 (fr->frametype == AST_FRAME_IMAGE) ||
03047 (fr->frametype == AST_FRAME_HTML) ||
03048 (fr->frametype == AST_FRAME_MODEM) ||
03049 (fr->frametype == AST_FRAME_TEXT)) {
03050 ast_write(other, fr);
03051 }
03052 ast_frfree(fr);
03053 }
03054
03055 cs[2] = cs[0];
03056 cs[0] = cs[1];
03057 cs[1] = cs[2];
03058 }
03059
03060 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
03061 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
03062 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
03063 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
03064
03065 return AST_BRIDGE_FAILED;
03066 }
03067
03068
03069 #ifdef P2P_INTENSE
03070 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
03071 {
03072 int res = 0, hdrlen = 12;
03073 struct sockaddr_in sin;
03074 socklen_t len;
03075 unsigned int *header;
03076 struct ast_rtp *rtp = cbdata, *bridged = NULL;
03077
03078 if (!rtp)
03079 return 1;
03080
03081 len = sizeof(sin);
03082 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
03083 return 1;
03084
03085 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
03086
03087
03088 if ((rtp->nat) &&
03089 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03090 (rtp->them.sin_port != sin.sin_port))) {
03091 rtp->them = sin;
03092 rtp->rxseqno = 0;
03093 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03094 if (option_debug || rtpdebug)
03095 ast_log(LOG_DEBUG, "P2P RTP NAT: Got audio from other end. Now sending to address %s:%d\n", ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port));
03096 }
03097
03098
03099 if ((bridged = ast_rtp_get_bridged(rtp)))
03100 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03101
03102 return 1;
03103 }
03104
03105
03106 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03107 {
03108
03109 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03110 return 0;
03111
03112
03113 if (rtp->ioid) {
03114 ast_io_remove(rtp->io, rtp->ioid);
03115 rtp->ioid = NULL;
03116 }
03117
03118
03119 fds[0] = chan->fds[0];
03120 chan->fds[0] = -1;
03121
03122
03123 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03124
03125 return 1;
03126 }
03127 #else
03128 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03129 {
03130 return 0;
03131 }
03132 #endif
03133
03134
03135 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03136 {
03137 ast_channel_lock(chan);
03138
03139
03140 ast_io_remove(rtp->io, iod[0]);
03141
03142
03143 chan->fds[0] = fds[0];
03144 ast_channel_unlock(chan);
03145
03146
03147 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03148 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03149
03150 return 0;
03151 }
03152
03153
03154 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03155 {
03156 ast_mutex_lock(&rtp0->bridge_lock);
03157 rtp0->bridged = rtp1;
03158 ast_mutex_unlock(&rtp0->bridge_lock);
03159
03160 return;
03161 }
03162
03163
03164 static enum ast_bridge_result bridge_p2p_loop(struct ast_channel *c0, struct ast_channel *c1, struct ast_rtp *p0, struct ast_rtp *p1, int timeoutms, int flags, struct ast_frame **fo, struct ast_channel **rc, void *pvt0, void *pvt1)
03165 {
03166 struct ast_frame *fr = NULL;
03167 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03168 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03169 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03170 int p0_callback = 0, p1_callback = 0;
03171 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03172
03173
03174 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03175 p2p_set_bridge(p0, p1);
03176 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03177 p2p_set_bridge(p1, p0);
03178
03179
03180 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03181 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03182
03183
03184 ast_channel_unlock(c0);
03185 ast_channel_unlock(c1);
03186
03187
03188 cs[0] = c0;
03189 cs[1] = c1;
03190 cs[2] = NULL;
03191 for (;;) {
03192
03193 if ((c0->rawreadformat != c1->rawwriteformat) || (c1->rawreadformat != c0->rawwriteformat)) {
03194 ast_log(LOG_DEBUG, "Oooh, formats changed, backing out\n");
03195 res = AST_BRIDGE_FAILED_NOWARN;
03196 break;
03197 }
03198
03199 if ((c0->tech_pvt != pvt0) ||
03200 (c1->tech_pvt != pvt1) ||
03201 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
03202 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
03203 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03204 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03205 ast_frfree(fr);
03206 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03207 ast_frfree(fr);
03208 res = AST_BRIDGE_RETRY;
03209 break;
03210 }
03211
03212 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03213 if (!timeoutms) {
03214 res = AST_BRIDGE_RETRY;
03215 break;
03216 }
03217 if (option_debug)
03218 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03219 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03220 break;
03221 continue;
03222 }
03223
03224 fr = ast_read(who);
03225 other = (who == c0) ? c1 : c0;
03226
03227 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
03228 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03229 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03230
03231 *fo = fr;
03232 *rc = who;
03233 if (option_debug)
03234 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03235 res = AST_BRIDGE_COMPLETE;
03236 break;
03237 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03238 if ((fr->subclass == AST_CONTROL_HOLD) ||
03239 (fr->subclass == AST_CONTROL_UNHOLD) ||
03240 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03241 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03242
03243 if (fr->subclass == AST_CONTROL_HOLD) {
03244 if (p0_callback)
03245 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03246 if (p1_callback)
03247 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03248 p2p_set_bridge(p0, NULL);
03249 p2p_set_bridge(p1, NULL);
03250 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03251
03252 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03253 p2p_set_bridge(p0, p1);
03254 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03255 p2p_set_bridge(p1, p0);
03256 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03257 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03258 }
03259 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03260 ast_frfree(fr);
03261 } else {
03262 *fo = fr;
03263 *rc = who;
03264 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03265 res = AST_BRIDGE_COMPLETE;
03266 break;
03267 }
03268 } else {
03269 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03270 (fr->frametype == AST_FRAME_DTMF_END) ||
03271 (fr->frametype == AST_FRAME_VOICE) ||
03272 (fr->frametype == AST_FRAME_VIDEO) ||
03273 (fr->frametype == AST_FRAME_IMAGE) ||
03274 (fr->frametype == AST_FRAME_HTML) ||
03275 (fr->frametype == AST_FRAME_MODEM) ||
03276 (fr->frametype == AST_FRAME_TEXT)) {
03277 ast_write(other, fr);
03278 }
03279
03280 ast_frfree(fr);
03281 }
03282
03283 cs[2] = cs[0];
03284 cs[0] = cs[1];
03285 cs[1] = cs[2];
03286 }
03287
03288
03289 if (p0_callback)
03290 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03291 if (p1_callback)
03292 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03293
03294
03295 p2p_set_bridge(p0, NULL);
03296 p2p_set_bridge(p1, NULL);
03297
03298 return res;
03299 }
03300
03301
03302
03303
03304 enum ast_bridge_result ast_rtp_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc, int timeoutms)
03305 {
03306 struct ast_rtp *p0 = NULL, *p1 = NULL;
03307 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03308 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03309 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03310 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03311 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03312 int codec0 = 0, codec1 = 0;
03313 void *pvt0 = NULL, *pvt1 = NULL;
03314
03315
03316 ast_channel_lock(c0);
03317 while(ast_channel_trylock(c1)) {
03318 ast_channel_unlock(c0);
03319 usleep(1);
03320 ast_channel_lock(c0);
03321 }
03322
03323
03324 if (ast_check_hangup(c0) || ast_check_hangup(c1)) {
03325 ast_log(LOG_WARNING, "Got hangup while attempting to bridge '%s' and '%s'\n", c0->name, c1->name);
03326 ast_channel_unlock(c0);
03327 ast_channel_unlock(c1);
03328 return AST_BRIDGE_FAILED;
03329 }
03330
03331
03332 if (!(pr0 = get_proto(c0))) {
03333 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03334 ast_channel_unlock(c0);
03335 ast_channel_unlock(c1);
03336 return AST_BRIDGE_FAILED;
03337 }
03338 if (!(pr1 = get_proto(c1))) {
03339 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03340 ast_channel_unlock(c0);
03341 ast_channel_unlock(c1);
03342 return AST_BRIDGE_FAILED;
03343 }
03344
03345
03346 pvt0 = c0->tech_pvt;
03347 pvt1 = c1->tech_pvt;
03348
03349
03350 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03351 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03352 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03353 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03354
03355
03356 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03357 audio_p0_res = AST_RTP_GET_FAILED;
03358 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03359 audio_p1_res = AST_RTP_GET_FAILED;
03360
03361
03362 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03363
03364 ast_channel_unlock(c0);
03365 ast_channel_unlock(c1);
03366 return AST_BRIDGE_FAILED_NOWARN;
03367 }
03368
03369
03370 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03371 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03372 audio_p0_res = AST_RTP_TRY_PARTIAL;
03373 }
03374
03375 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03376 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03377 audio_p1_res = AST_RTP_TRY_PARTIAL;
03378 }
03379
03380
03381
03382
03383
03384
03385
03386
03387
03388
03389
03390
03391
03392
03393 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03394 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03395 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03396 ast_channel_unlock(c0);
03397 ast_channel_unlock(c1);
03398 return AST_BRIDGE_FAILED_NOWARN;
03399 }
03400 audio_p0_res = AST_RTP_TRY_PARTIAL;
03401 audio_p1_res = AST_RTP_TRY_PARTIAL;
03402 }
03403
03404
03405 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF)) ||
03406 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF))) {
03407 ast_channel_unlock(c0);
03408 ast_channel_unlock(c1);
03409 return AST_BRIDGE_FAILED_NOWARN;
03410 }
03411
03412
03413 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03414 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03415 if (codec0 && codec1 && !(codec0 & codec1)) {
03416
03417 if (option_debug)
03418 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03419 ast_channel_unlock(c0);
03420 ast_channel_unlock(c1);
03421 return AST_BRIDGE_FAILED_NOWARN;
03422 }
03423
03424
03425 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03426 struct ast_format_list fmt0, fmt1;
03427
03428
03429 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03430 if (option_debug)
03431 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03432 ast_channel_unlock(c0);
03433 ast_channel_unlock(c1);
03434 return AST_BRIDGE_FAILED_NOWARN;
03435 }
03436
03437 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03438 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03439 if (fmt0.cur_ms != fmt1.cur_ms) {
03440 if (option_debug)
03441 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03442 ast_channel_unlock(c0);
03443 ast_channel_unlock(c1);
03444 return AST_BRIDGE_FAILED_NOWARN;
03445 }
03446
03447 if (option_verbose > 2)
03448 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03449 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03450 } else {
03451 if (option_verbose > 2)
03452 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03453 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03454 }
03455
03456 return res;
03457 }
03458
03459 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03460 {
03461 struct hostent *hp;
03462 struct ast_hostent ahp;
03463 int port = 0;
03464 char *p, *arg;
03465
03466 if (argc != 4)
03467 return RESULT_SHOWUSAGE;
03468 arg = argv[3];
03469 p = strstr(arg, ":");
03470 if (p) {
03471 *p = '\0';
03472 p++;
03473 port = atoi(p);
03474 }
03475 hp = ast_gethostbyname(arg, &ahp);
03476 if (hp == NULL)
03477 return RESULT_SHOWUSAGE;
03478 rtpdebugaddr.sin_family = AF_INET;
03479 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03480 rtpdebugaddr.sin_port = htons(port);
03481 if (port == 0)
03482 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03483 else
03484 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03485 rtpdebug = 1;
03486 return RESULT_SUCCESS;
03487 }
03488
03489 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03490 {
03491 struct hostent *hp;
03492 struct ast_hostent ahp;
03493 int port = 0;
03494 char *p, *arg;
03495 if (argc != 5)
03496 return RESULT_SHOWUSAGE;
03497
03498 arg = argv[4];
03499 p = strstr(arg, ":");
03500 if (p) {
03501 *p = '\0';
03502 p++;
03503 port = atoi(p);
03504 }
03505 hp = ast_gethostbyname(arg, &ahp);
03506 if (hp == NULL)
03507 return RESULT_SHOWUSAGE;
03508 rtcpdebugaddr.sin_family = AF_INET;
03509 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03510 rtcpdebugaddr.sin_port = htons(port);
03511 if (port == 0)
03512 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03513 else
03514 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03515 rtcpdebug = 1;
03516 return RESULT_SUCCESS;
03517 }
03518
03519 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03520 {
03521 struct hostent *hp;
03522 struct ast_hostent ahp;
03523 int port = 0;
03524 char *p, *arg;
03525 if (argc != 4)
03526 return RESULT_SHOWUSAGE;
03527
03528 arg = argv[3];
03529 p = strstr(arg, ":");
03530 if (p) {
03531 *p = '\0';
03532 p++;
03533 port = atoi(p);
03534 }
03535 hp = ast_gethostbyname(arg, &ahp);
03536 if (hp == NULL)
03537 return RESULT_SHOWUSAGE;
03538 rtcpdebugaddr.sin_family = AF_INET;
03539 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03540 rtcpdebugaddr.sin_port = htons(port);
03541 if (port == 0)
03542 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03543 else
03544 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03545 rtcpdebug = 1;
03546 return RESULT_SUCCESS;
03547 }
03548
03549 static int rtp_do_debug(int fd, int argc, char *argv[])
03550 {
03551 if (argc != 2) {
03552 if (argc != 4)
03553 return RESULT_SHOWUSAGE;
03554 return rtp_do_debug_ip(fd, argc, argv);
03555 }
03556 rtpdebug = 1;
03557 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03558 ast_cli(fd, "RTP Debugging Enabled\n");
03559 return RESULT_SUCCESS;
03560 }
03561
03562 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03563 if (argc != 3) {
03564 if (argc != 5)
03565 return RESULT_SHOWUSAGE;
03566 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03567 }
03568 rtcpdebug = 1;
03569 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03570 ast_cli(fd, "RTCP Debugging Enabled\n");
03571 return RESULT_SUCCESS;
03572 }
03573
03574 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03575 if (argc != 2) {
03576 if (argc != 4)
03577 return RESULT_SHOWUSAGE;
03578 return rtcp_do_debug_ip(fd, argc, argv);
03579 }
03580 rtcpdebug = 1;
03581 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03582 ast_cli(fd, "RTCP Debugging Enabled\n");
03583 return RESULT_SUCCESS;
03584 }
03585
03586 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03587 if (argc != 3) {
03588 return RESULT_SHOWUSAGE;
03589 }
03590 rtcpstats = 1;
03591 ast_cli(fd, "RTCP Stats Enabled\n");
03592 return RESULT_SUCCESS;
03593 }
03594
03595 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03596 if (argc != 2) {
03597 return RESULT_SHOWUSAGE;
03598 }
03599 rtcpstats = 1;
03600 ast_cli(fd, "RTCP Stats Enabled\n");
03601 return RESULT_SUCCESS;
03602 }
03603
03604 static int rtp_no_debug(int fd, int argc, char *argv[])
03605 {
03606 if (argc != 3)
03607 return RESULT_SHOWUSAGE;
03608 rtpdebug = 0;
03609 ast_cli(fd,"RTP Debugging Disabled\n");
03610 return RESULT_SUCCESS;
03611 }
03612
03613 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03614 {
03615 if (argc != 4)
03616 return RESULT_SHOWUSAGE;
03617 rtcpdebug = 0;
03618 ast_cli(fd,"RTCP Debugging Disabled\n");
03619 return RESULT_SUCCESS;
03620 }
03621
03622 static int rtcp_no_debug(int fd, int argc, char *argv[])
03623 {
03624 if (argc != 3)
03625 return RESULT_SHOWUSAGE;
03626 rtcpdebug = 0;
03627 ast_cli(fd,"RTCP Debugging Disabled\n");
03628 return RESULT_SUCCESS;
03629 }
03630
03631 static int rtcp_no_stats_deprecated(int fd, int argc, char *argv[])
03632 {
03633 if (argc != 4)
03634 return RESULT_SHOWUSAGE;
03635 rtcpstats = 0;
03636 ast_cli(fd,"RTCP Stats Disabled\n");
03637 return RESULT_SUCCESS;
03638 }
03639
03640 static int rtcp_no_stats(int fd, int argc, char *argv[])
03641 {
03642 if (argc != 3)
03643 return RESULT_SHOWUSAGE;
03644 rtcpstats = 0;
03645 ast_cli(fd,"RTCP Stats Disabled\n");
03646 return RESULT_SUCCESS;
03647 }
03648
03649 static int stun_do_debug(int fd, int argc, char *argv[])
03650 {
03651 if (argc != 2) {
03652 return RESULT_SHOWUSAGE;
03653 }
03654 stundebug = 1;
03655 ast_cli(fd, "STUN Debugging Enabled\n");
03656 return RESULT_SUCCESS;
03657 }
03658
03659 static int stun_no_debug(int fd, int argc, char *argv[])
03660 {
03661 if (argc != 3)
03662 return RESULT_SHOWUSAGE;
03663 stundebug = 0;
03664 ast_cli(fd, "STUN Debugging Disabled\n");
03665 return RESULT_SUCCESS;
03666 }
03667
03668 static char debug_usage[] =
03669 "Usage: rtp debug [ip host[:port]]\n"
03670 " Enable dumping of all RTP packets to and from host.\n";
03671
03672 static char no_debug_usage[] =
03673 "Usage: rtp debug off\n"
03674 " Disable all RTP debugging\n";
03675
03676 static char stun_debug_usage[] =
03677 "Usage: stun debug\n"
03678 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03679
03680 static char stun_no_debug_usage[] =
03681 "Usage: stun debug off\n"
03682 " Disable STUN debugging\n";
03683
03684 static char rtcp_debug_usage[] =
03685 "Usage: rtcp debug [ip host[:port]]\n"
03686 " Enable dumping of all RTCP packets to and from host.\n";
03687
03688 static char rtcp_no_debug_usage[] =
03689 "Usage: rtcp debug off\n"
03690 " Disable all RTCP debugging\n";
03691
03692 static char rtcp_stats_usage[] =
03693 "Usage: rtcp stats\n"
03694 " Enable dumping of RTCP stats.\n";
03695
03696 static char rtcp_no_stats_usage[] =
03697 "Usage: rtcp stats off\n"
03698 " Disable all RTCP stats\n";
03699
03700 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03701 { "rtp", "no", "debug", NULL },
03702 rtp_no_debug, NULL,
03703 NULL };
03704
03705 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03706 { "rtp", "rtcp", "debug", "ip", NULL },
03707 rtcp_do_debug_deprecated, NULL,
03708 NULL };
03709
03710 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03711 { "rtp", "rtcp", "debug", NULL },
03712 rtcp_do_debug_deprecated, NULL,
03713 NULL };
03714
03715 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03716 { "rtp", "rtcp", "no", "debug", NULL },
03717 rtcp_no_debug_deprecated, NULL,
03718 NULL };
03719
03720 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03721 { "rtp", "rtcp", "stats", NULL },
03722 rtcp_do_stats_deprecated, NULL,
03723 NULL };
03724
03725 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03726 { "rtp", "rtcp", "no", "stats", NULL },
03727 rtcp_no_stats_deprecated, NULL,
03728 NULL };
03729
03730 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03731 { "stun", "no", "debug", NULL },
03732 stun_no_debug, NULL,
03733 NULL };
03734
03735 static struct ast_cli_entry cli_rtp[] = {
03736 { { "rtp", "debug", "ip", NULL },
03737 rtp_do_debug, "Enable RTP debugging on IP",
03738 debug_usage },
03739
03740 { { "rtp", "debug", NULL },
03741 rtp_do_debug, "Enable RTP debugging",
03742 debug_usage },
03743
03744 { { "rtp", "debug", "off", NULL },
03745 rtp_no_debug, "Disable RTP debugging",
03746 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03747
03748 { { "rtcp", "debug", "ip", NULL },
03749 rtcp_do_debug, "Enable RTCP debugging on IP",
03750 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03751
03752 { { "rtcp", "debug", NULL },
03753 rtcp_do_debug, "Enable RTCP debugging",
03754 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03755
03756 { { "rtcp", "debug", "off", NULL },
03757 rtcp_no_debug, "Disable RTCP debugging",
03758 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03759
03760 { { "rtcp", "stats", NULL },
03761 rtcp_do_stats, "Enable RTCP stats",
03762 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03763
03764 { { "rtcp", "stats", "off", NULL },
03765 rtcp_no_stats, "Disable RTCP stats",
03766 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03767
03768 { { "stun", "debug", NULL },
03769 stun_do_debug, "Enable STUN debugging",
03770 stun_debug_usage },
03771
03772 { { "stun", "debug", "off", NULL },
03773 stun_no_debug, "Disable STUN debugging",
03774 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03775 };
03776
03777 int ast_rtp_reload(void)
03778 {
03779 struct ast_config *cfg;
03780 const char *s;
03781
03782 rtpstart = 5000;
03783 rtpend = 31000;
03784 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03785 cfg = ast_config_load("rtp.conf");
03786 if (cfg) {
03787 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03788 rtpstart = atoi(s);
03789 if (rtpstart < 1024)
03790 rtpstart = 1024;
03791 if (rtpstart > 65535)
03792 rtpstart = 65535;
03793 }
03794 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03795 rtpend = atoi(s);
03796 if (rtpend < 1024)
03797 rtpend = 1024;
03798 if (rtpend > 65535)
03799 rtpend = 65535;
03800 }
03801 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03802 rtcpinterval = atoi(s);
03803 if (rtcpinterval == 0)
03804 rtcpinterval = 0;
03805 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03806 rtcpinterval = RTCP_MIN_INTERVALMS;
03807 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03808 rtcpinterval = RTCP_MAX_INTERVALMS;
03809 }
03810 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03811 #ifdef SO_NO_CHECK
03812 if (ast_false(s))
03813 nochecksums = 1;
03814 else
03815 nochecksums = 0;
03816 #else
03817 if (ast_false(s))
03818 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03819 #endif
03820 }
03821 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03822 dtmftimeout = atoi(s);
03823 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03824 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03825 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03826 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03827 };
03828 }
03829 ast_config_destroy(cfg);
03830 }
03831 if (rtpstart >= rtpend) {
03832 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03833 rtpstart = 5000;
03834 rtpend = 31000;
03835 }
03836 if (option_verbose > 1)
03837 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03838 return 0;
03839 }
03840
03841
03842 void ast_rtp_init(void)
03843 {
03844 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03845 ast_rtp_reload();
03846 }
03847