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00029 #include "asterisk.h"
00030
00031 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 136062 $")
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 if (option_debug)
00856 ast_log(LOG_DEBUG, "socket RTCP read: rtp %i rtcp %i\n", rtp->s, rtp->rtcp->s);
00857
00858 rtcpheader = (unsigned int *)(rtcpdata + AST_FRIENDLY_OFFSET);
00859
00860 if (res < 0) {
00861 ast_assert(errno != EBADF);
00862 if (errno != EAGAIN) {
00863 ast_log(LOG_WARNING, "RTCP Read error: %s. Hanging up.\n", strerror(errno));
00864 ast_log(LOG_WARNING, "socket RTCP read: rtp %i rtcp %i\n", rtp->s, rtp->rtcp->s);
00865 return NULL;
00866 }
00867 return &ast_null_frame;
00868 }
00869
00870 packetwords = res / 4;
00871
00872 if (rtp->nat) {
00873
00874 if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
00875 (rtp->rtcp->them.sin_port != sin.sin_port)) {
00876 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
00877 if (option_debug || rtpdebug)
00878 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));
00879 }
00880 }
00881
00882 if (option_debug)
00883 ast_log(LOG_DEBUG, "Got RTCP report of %d bytes\n", res);
00884
00885
00886 position = 0;
00887 while (position < packetwords) {
00888 i = position;
00889 length = ntohl(rtcpheader[i]);
00890 pt = (length & 0xff0000) >> 16;
00891 rc = (length & 0x1f000000) >> 24;
00892 length &= 0xffff;
00893
00894 if ((i + length) > packetwords) {
00895 ast_log(LOG_WARNING, "RTCP Read too short\n");
00896 return &ast_null_frame;
00897 }
00898
00899 if (rtcp_debug_test_addr(&sin)) {
00900 ast_verbose("\n\nGot RTCP from %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00901 ast_verbose("PT: %d(%s)\n", pt, (pt == 200) ? "Sender Report" : (pt == 201) ? "Receiver Report" : (pt == 192) ? "H.261 FUR" : "Unknown");
00902 ast_verbose("Reception reports: %d\n", rc);
00903 ast_verbose("SSRC of sender: %u\n", rtcpheader[i + 1]);
00904 }
00905
00906 i += 2;
00907
00908 switch (pt) {
00909 case RTCP_PT_SR:
00910 gettimeofday(&rtp->rtcp->rxlsr,NULL);
00911 rtp->rtcp->spc = ntohl(rtcpheader[i+3]);
00912 rtp->rtcp->soc = ntohl(rtcpheader[i + 4]);
00913 rtp->rtcp->themrxlsr = ((ntohl(rtcpheader[i]) & 0x0000ffff) << 16) | ((ntohl(rtcpheader[i + 1]) & 0xffff0000) >> 16);
00914
00915 if (rtcp_debug_test_addr(&sin)) {
00916 ast_verbose("NTP timestamp: %lu.%010lu\n", (unsigned long) ntohl(rtcpheader[i]), (unsigned long) ntohl(rtcpheader[i + 1]) * 4096);
00917 ast_verbose("RTP timestamp: %lu\n", (unsigned long) ntohl(rtcpheader[i + 2]));
00918 ast_verbose("SPC: %lu\tSOC: %lu\n", (unsigned long) ntohl(rtcpheader[i + 3]), (unsigned long) ntohl(rtcpheader[i + 4]));
00919 }
00920 i += 5;
00921 if (rc < 1)
00922 break;
00923
00924 case RTCP_PT_RR:
00925
00926
00927 gettimeofday(&now, NULL);
00928 timeval2ntp(now, &msw, &lsw);
00929 if (ntohl(rtcpheader[i + 4]) && ntohl(rtcpheader[i + 5])) {
00930 comp = ((msw & 0xffff) << 16) | ((lsw & 0xffff0000) >> 16);
00931 lsr = ntohl(rtcpheader[i + 4]);
00932 dlsr = ntohl(rtcpheader[i + 5]);
00933 rtt = comp - lsr - dlsr;
00934
00935
00936
00937 if (rtt < 4294) {
00938 rtt = (rtt * 1000000) >> 16;
00939 } else {
00940 rtt = (rtt * 1000) >> 16;
00941 rtt *= 1000;
00942 }
00943 rtt = rtt / 1000.;
00944 rttsec = rtt / 1000.;
00945
00946 if (comp - dlsr >= lsr) {
00947 rtp->rtcp->accumulated_transit += rttsec;
00948 rtp->rtcp->rtt = rttsec;
00949 if (rtp->rtcp->maxrtt<rttsec)
00950 rtp->rtcp->maxrtt = rttsec;
00951 if (rtp->rtcp->minrtt>rttsec)
00952 rtp->rtcp->minrtt = rttsec;
00953 } else if (rtcp_debug_test_addr(&sin)) {
00954 ast_verbose("Internal RTCP NTP clock skew detected: "
00955 "lsr=%u, now=%u, dlsr=%u (%d:%03dms), "
00956 "diff=%d\n",
00957 lsr, comp, dlsr, dlsr / 65536,
00958 (dlsr % 65536) * 1000 / 65536,
00959 dlsr - (comp - lsr));
00960 }
00961 }
00962
00963 rtp->rtcp->reported_jitter = ntohl(rtcpheader[i + 3]);
00964 rtp->rtcp->reported_lost = ntohl(rtcpheader[i + 1]) & 0xffffff;
00965 if (rtcp_debug_test_addr(&sin)) {
00966 ast_verbose(" Fraction lost: %ld\n", (((long) ntohl(rtcpheader[i + 1]) & 0xff000000) >> 24));
00967 ast_verbose(" Packets lost so far: %d\n", rtp->rtcp->reported_lost);
00968 ast_verbose(" Highest sequence number: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff));
00969 ast_verbose(" Sequence number cycles: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff) >> 16);
00970 ast_verbose(" Interarrival jitter: %u\n", rtp->rtcp->reported_jitter);
00971 ast_verbose(" Last SR(our NTP): %lu.%010lu\n",(unsigned long) ntohl(rtcpheader[i + 4]) >> 16,((unsigned long) ntohl(rtcpheader[i + 4]) << 16) * 4096);
00972 ast_verbose(" DLSR: %4.4f (sec)\n",ntohl(rtcpheader[i + 5])/65536.0);
00973 if (rtt)
00974 ast_verbose(" RTT: %lu(sec)\n", (unsigned long) rtt);
00975 }
00976 break;
00977 case RTCP_PT_FUR:
00978 if (rtcp_debug_test_addr(&sin))
00979 ast_verbose("Received an RTCP Fast Update Request\n");
00980 rtp->f.frametype = AST_FRAME_CONTROL;
00981 rtp->f.subclass = AST_CONTROL_VIDUPDATE;
00982 rtp->f.datalen = 0;
00983 rtp->f.samples = 0;
00984 rtp->f.mallocd = 0;
00985 rtp->f.src = "RTP";
00986 f = &rtp->f;
00987 break;
00988 case RTCP_PT_SDES:
00989 if (rtcp_debug_test_addr(&sin))
00990 ast_verbose("Received an SDES from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00991 break;
00992 case RTCP_PT_BYE:
00993 if (rtcp_debug_test_addr(&sin))
00994 ast_verbose("Received a BYE from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00995 break;
00996 default:
00997 if (option_debug)
00998 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));
00999 break;
01000 }
01001 position += (length + 1);
01002 }
01003
01004 return f;
01005 }
01006
01007 static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int timestamp, int mark)
01008 {
01009 struct timeval now;
01010 double transit;
01011 double current_time;
01012 double d;
01013 double dtv;
01014 double prog;
01015
01016 if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) {
01017 gettimeofday(&rtp->rxcore, NULL);
01018 rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000;
01019
01020 rtp->seedrxts = timestamp;
01021 rtp->rxcore.tv_sec -= timestamp / 8000;
01022 rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
01023
01024 rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100;
01025 if (rtp->rxcore.tv_usec < 0) {
01026
01027 rtp->rxcore.tv_usec += 1000000;
01028 rtp->rxcore.tv_sec -= 1;
01029 }
01030 }
01031
01032 gettimeofday(&now,NULL);
01033
01034 tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000;
01035 tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125;
01036 if (tv->tv_usec >= 1000000) {
01037 tv->tv_usec -= 1000000;
01038 tv->tv_sec += 1;
01039 }
01040 prog = (double)((timestamp-rtp->seedrxts)/8000.);
01041 dtv = (double)rtp->drxcore + (double)(prog);
01042 current_time = (double)now.tv_sec + (double)now.tv_usec/1000000;
01043 transit = current_time - dtv;
01044 d = transit - rtp->rxtransit;
01045 rtp->rxtransit = transit;
01046 if (d<0)
01047 d=-d;
01048 rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
01049 if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
01050 rtp->rtcp->maxrxjitter = rtp->rxjitter;
01051 if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
01052 rtp->rtcp->minrxjitter = rtp->rxjitter;
01053 }
01054
01055
01056 static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, unsigned int *rtpheader, int len, int hdrlen)
01057 {
01058 int res = 0, payload = 0, bridged_payload = 0, mark;
01059 struct rtpPayloadType rtpPT;
01060 int reconstruct = ntohl(rtpheader[0]);
01061
01062
01063 payload = (reconstruct & 0x7f0000) >> 16;
01064 mark = (((reconstruct & 0x800000) >> 23) != 0);
01065
01066
01067 rtpPT = ast_rtp_lookup_pt(rtp, payload);
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 (!bridged->current_RTP_PT[bridged_payload].code)
01078 return -1;
01079
01080
01081
01082 if (!ast_test_flag(rtp, FLAG_P2P_SENT_MARK)) {
01083 mark = 1;
01084 ast_set_flag(rtp, FLAG_P2P_SENT_MARK);
01085 }
01086
01087
01088 reconstruct &= 0xFF80FFFF;
01089 reconstruct |= (bridged_payload << 16);
01090 reconstruct |= (mark << 23);
01091 rtpheader[0] = htonl(reconstruct);
01092
01093
01094 res = sendto(bridged->s, (void *)rtpheader, len, 0, (struct sockaddr *)&bridged->them, sizeof(bridged->them));
01095 if (res < 0) {
01096 if (!bridged->nat || (bridged->nat && (ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
01097 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));
01098 } else if (((ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(bridged, FLAG_NAT_INACTIVE_NOWARN)) {
01099 if (option_debug || rtpdebug)
01100 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));
01101 ast_set_flag(bridged, FLAG_NAT_INACTIVE_NOWARN);
01102 }
01103 return 0;
01104 } else if (rtp_debug_test_addr(&bridged->them))
01105 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);
01106
01107 return 0;
01108 }
01109
01110 struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
01111 {
01112 int res;
01113 struct sockaddr_in sin;
01114 socklen_t len;
01115 unsigned int seqno;
01116 int version;
01117 int payloadtype;
01118 int hdrlen = 12;
01119 int padding;
01120 int mark;
01121 int ext;
01122 int cc;
01123 unsigned int ssrc;
01124 unsigned int timestamp;
01125 unsigned int *rtpheader;
01126 struct rtpPayloadType rtpPT;
01127 struct ast_rtp *bridged = NULL;
01128
01129
01130 if (rtp->sending_digit)
01131 ast_rtp_senddigit_continuation(rtp);
01132
01133 len = sizeof(sin);
01134
01135
01136 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01137 0, (struct sockaddr *)&sin, &len);
01138 if (option_debug > 3)
01139 ast_log(LOG_DEBUG, "socket RTP read: rtp %i rtcp %i\n", rtp->s, rtp->rtcp->s);
01140
01141 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01142 if (res < 0) {
01143 ast_assert(errno != EBADF);
01144 if (errno != EAGAIN) {
01145 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01146 ast_log(LOG_WARNING, "socket RTP read: rtp %i rtcp %i\n", rtp->s, rtp->rtcp->s);
01147 return NULL;
01148 }
01149 return &ast_null_frame;
01150 }
01151
01152 if (res < hdrlen) {
01153 ast_log(LOG_WARNING, "RTP Read too short\n");
01154 return &ast_null_frame;
01155 }
01156
01157
01158 seqno = ntohl(rtpheader[0]);
01159
01160
01161 version = (seqno & 0xC0000000) >> 30;
01162 if (!version) {
01163 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01164 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01165 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01166 }
01167 return &ast_null_frame;
01168 }
01169
01170 #if 0
01171
01172 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01173 return &ast_null_frame;
01174 #endif
01175
01176
01177 if (rtp->nat) {
01178 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01179 (rtp->them.sin_port != sin.sin_port)) {
01180 rtp->them = sin;
01181 if (rtp->rtcp) {
01182 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01183 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01184 }
01185 rtp->rxseqno = 0;
01186 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01187 if (option_debug || rtpdebug)
01188 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));
01189 }
01190 }
01191
01192
01193 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01194 return &ast_null_frame;
01195
01196 if (version != 2)
01197 return &ast_null_frame;
01198
01199 payloadtype = (seqno & 0x7f0000) >> 16;
01200 padding = seqno & (1 << 29);
01201 mark = seqno & (1 << 23);
01202 ext = seqno & (1 << 28);
01203 cc = (seqno & 0xF000000) >> 24;
01204 seqno &= 0xffff;
01205 timestamp = ntohl(rtpheader[1]);
01206 ssrc = ntohl(rtpheader[2]);
01207
01208 if (!mark && rtp->rxssrc && rtp->rxssrc != ssrc) {
01209 if (option_debug || rtpdebug)
01210 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01211 mark = 1;
01212 }
01213
01214 rtp->rxssrc = ssrc;
01215
01216 if (padding) {
01217
01218 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01219 }
01220
01221 if (cc) {
01222
01223 hdrlen += cc*4;
01224 }
01225
01226 if (ext) {
01227
01228 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01229 hdrlen += 4;
01230 }
01231
01232 if (res < hdrlen) {
01233 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01234 return &ast_null_frame;
01235 }
01236
01237 rtp->rxcount++;
01238
01239 if (rtp->rxcount==1) {
01240
01241 rtp->seedrxseqno = seqno;
01242 }
01243
01244
01245 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01246
01247 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01248 }
01249 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01250 rtp->cycles += RTP_SEQ_MOD;
01251
01252 rtp->lastrxseqno = seqno;
01253
01254 if (rtp->themssrc==0)
01255 rtp->themssrc = ntohl(rtpheader[2]);
01256
01257 if (rtp_debug_test_addr(&sin))
01258 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01259 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01260
01261 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01262 if (!rtpPT.isAstFormat) {
01263 struct ast_frame *f = NULL;
01264
01265
01266 if (rtpPT.code == AST_RTP_DTMF) {
01267
01268 if (rtp_debug_test_addr(&sin)) {
01269 unsigned char *data;
01270 unsigned int event;
01271 unsigned int event_end;
01272 unsigned int duration;
01273 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01274 event = ntohl(*((unsigned int *)(data)));
01275 event >>= 24;
01276 event_end = ntohl(*((unsigned int *)(data)));
01277 event_end <<= 8;
01278 event_end >>= 24;
01279 duration = ntohl(*((unsigned int *)(data)));
01280 duration &= 0xFFFF;
01281 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);
01282 }
01283 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01284 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01285
01286 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01287 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01288 rtp->lastevent = seqno;
01289 }
01290 } else if (rtpPT.code == AST_RTP_CN) {
01291
01292 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01293 } else {
01294 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01295 }
01296 return f ? f : &ast_null_frame;
01297 }
01298 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01299 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01300
01301 if (!rtp->lastrxts)
01302 rtp->lastrxts = timestamp;
01303
01304 rtp->rxseqno = seqno;
01305
01306
01307 rtp->lastrxts = timestamp;
01308
01309 rtp->f.mallocd = 0;
01310 rtp->f.datalen = res - hdrlen;
01311 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01312 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01313 rtp->f.seqno = seqno;
01314 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01315 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01316 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01317 ast_frame_byteswap_be(&rtp->f);
01318 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01319
01320 ast_set_flag(&rtp->f, AST_FRFLAG_HAS_TIMING_INFO);
01321 rtp->f.ts = timestamp / 8;
01322 rtp->f.len = rtp->f.samples / (ast_format_rate(rtp->f.subclass) / 1000);
01323 } else {
01324
01325 if (!rtp->lastividtimestamp)
01326 rtp->lastividtimestamp = timestamp;
01327 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01328 rtp->lastividtimestamp = timestamp;
01329 rtp->f.delivery.tv_sec = 0;
01330 rtp->f.delivery.tv_usec = 0;
01331 if (mark)
01332 rtp->f.subclass |= 0x1;
01333
01334 }
01335 rtp->f.src = "RTP";
01336 return &rtp->f;
01337 }
01338
01339
01340
01341 static struct {
01342 struct rtpPayloadType payloadType;
01343 char* type;
01344 char* subtype;
01345 } mimeTypes[] = {
01346 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01347 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01348 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01349 {{1, AST_FORMAT_ULAW}, "audio", "G711U"},
01350 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01351 {{1, AST_FORMAT_ALAW}, "audio", "G711A"},
01352 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01353 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01354 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01355 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01356 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01357 {{1, AST_FORMAT_G729A}, "audio", "G729A"},
01358 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01359 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01360 {{1, AST_FORMAT_G722}, "audio", "G722"},
01361 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01362 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01363 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01364 {{0, AST_RTP_CN}, "audio", "CN"},
01365 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01366 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01367 {{1, AST_FORMAT_H261}, "video", "H261"},
01368 {{1, AST_FORMAT_H263}, "video", "H263"},
01369 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01370 {{1, AST_FORMAT_H264}, "video", "H264"},
01371 };
01372
01373
01374
01375
01376 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01377 [0] = {1, AST_FORMAT_ULAW},
01378 #ifdef USE_DEPRECATED_G726
01379 [2] = {1, AST_FORMAT_G726},
01380 #endif
01381 [3] = {1, AST_FORMAT_GSM},
01382 [4] = {1, AST_FORMAT_G723_1},
01383 [5] = {1, AST_FORMAT_ADPCM},
01384 [6] = {1, AST_FORMAT_ADPCM},
01385 [7] = {1, AST_FORMAT_LPC10},
01386 [8] = {1, AST_FORMAT_ALAW},
01387 [9] = {1, AST_FORMAT_G722},
01388 [10] = {1, AST_FORMAT_SLINEAR},
01389 [11] = {1, AST_FORMAT_SLINEAR},
01390 [13] = {0, AST_RTP_CN},
01391 [16] = {1, AST_FORMAT_ADPCM},
01392 [17] = {1, AST_FORMAT_ADPCM},
01393 [18] = {1, AST_FORMAT_G729A},
01394 [19] = {0, AST_RTP_CN},
01395 [26] = {1, AST_FORMAT_JPEG},
01396 [31] = {1, AST_FORMAT_H261},
01397 [34] = {1, AST_FORMAT_H263},
01398 [103] = {1, AST_FORMAT_H263_PLUS},
01399 [97] = {1, AST_FORMAT_ILBC},
01400 [99] = {1, AST_FORMAT_H264},
01401 [101] = {0, AST_RTP_DTMF},
01402 [110] = {1, AST_FORMAT_SPEEX},
01403 [111] = {1, AST_FORMAT_G726},
01404 [112] = {1, AST_FORMAT_G726_AAL2},
01405 [121] = {0, AST_RTP_CISCO_DTMF},
01406 };
01407
01408 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01409 {
01410 int i;
01411
01412 if (!rtp)
01413 return;
01414
01415 ast_mutex_lock(&rtp->bridge_lock);
01416
01417 for (i = 0; i < MAX_RTP_PT; ++i) {
01418 rtp->current_RTP_PT[i].isAstFormat = 0;
01419 rtp->current_RTP_PT[i].code = 0;
01420 }
01421
01422 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01423 rtp->rtp_lookup_code_cache_code = 0;
01424 rtp->rtp_lookup_code_cache_result = 0;
01425
01426 ast_mutex_unlock(&rtp->bridge_lock);
01427 }
01428
01429 void ast_rtp_pt_default(struct ast_rtp* rtp)
01430 {
01431 int i;
01432
01433 ast_mutex_lock(&rtp->bridge_lock);
01434
01435
01436 for (i = 0; i < MAX_RTP_PT; ++i) {
01437 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01438 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01439 }
01440
01441 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01442 rtp->rtp_lookup_code_cache_code = 0;
01443 rtp->rtp_lookup_code_cache_result = 0;
01444
01445 ast_mutex_unlock(&rtp->bridge_lock);
01446 }
01447
01448 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01449 {
01450 unsigned int i;
01451
01452 ast_mutex_lock(&dest->bridge_lock);
01453 ast_mutex_lock(&src->bridge_lock);
01454
01455 for (i=0; i < MAX_RTP_PT; ++i) {
01456 dest->current_RTP_PT[i].isAstFormat =
01457 src->current_RTP_PT[i].isAstFormat;
01458 dest->current_RTP_PT[i].code =
01459 src->current_RTP_PT[i].code;
01460 }
01461 dest->rtp_lookup_code_cache_isAstFormat = 0;
01462 dest->rtp_lookup_code_cache_code = 0;
01463 dest->rtp_lookup_code_cache_result = 0;
01464
01465 ast_mutex_unlock(&src->bridge_lock);
01466 ast_mutex_unlock(&dest->bridge_lock);
01467 }
01468
01469
01470 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01471 {
01472 struct ast_rtp_protocol *cur = NULL;
01473
01474 AST_LIST_LOCK(&protos);
01475 AST_LIST_TRAVERSE(&protos, cur, list) {
01476 if (cur->type == chan->tech->type)
01477 break;
01478 }
01479 AST_LIST_UNLOCK(&protos);
01480
01481 return cur;
01482 }
01483
01484 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01485 {
01486 struct ast_rtp *destp = NULL, *srcp = NULL;
01487 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01488 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01489 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01490 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01491 int srccodec, destcodec, nat_active = 0;
01492
01493
01494 ast_channel_lock(dest);
01495 if (src) {
01496 while(ast_channel_trylock(src)) {
01497 ast_channel_unlock(dest);
01498 usleep(1);
01499 ast_channel_lock(dest);
01500 }
01501 }
01502
01503
01504 destpr = get_proto(dest);
01505 if (src)
01506 srcpr = get_proto(src);
01507 if (!destpr) {
01508 if (option_debug)
01509 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01510 ast_channel_unlock(dest);
01511 if (src)
01512 ast_channel_unlock(src);
01513 return 0;
01514 }
01515 if (!srcpr) {
01516 if (option_debug)
01517 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01518 ast_channel_unlock(dest);
01519 if (src)
01520 ast_channel_unlock(src);
01521 return 0;
01522 }
01523
01524
01525 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01526 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01527 if (srcpr) {
01528 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01529 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01530 }
01531
01532
01533 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01534
01535 ast_channel_unlock(dest);
01536 if (src)
01537 ast_channel_unlock(src);
01538 return 0;
01539 }
01540 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01541 srccodec = srcpr->get_codec(src);
01542 else
01543 srccodec = 0;
01544 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01545 destcodec = destpr->get_codec(dest);
01546 else
01547 destcodec = 0;
01548
01549 if (!(srccodec & destcodec)) {
01550 ast_channel_unlock(dest);
01551 if (src)
01552 ast_channel_unlock(src);
01553 return 0;
01554 }
01555
01556 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01557 srcp = NULL;
01558
01559 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01560 nat_active = 1;
01561
01562 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01563 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01564 ast_channel_unlock(dest);
01565 if (src)
01566 ast_channel_unlock(src);
01567 if (option_debug)
01568 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01569 return 1;
01570 }
01571
01572 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01573 {
01574 struct ast_rtp *destp = NULL, *srcp = NULL;
01575 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01576 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01577 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01578 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01579 int srccodec, destcodec;
01580
01581
01582 ast_channel_lock(dest);
01583 while(ast_channel_trylock(src)) {
01584 ast_channel_unlock(dest);
01585 usleep(1);
01586 ast_channel_lock(dest);
01587 }
01588
01589
01590 if (!(destpr = get_proto(dest))) {
01591 if (option_debug)
01592 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01593 ast_channel_unlock(dest);
01594 ast_channel_unlock(src);
01595 return 0;
01596 }
01597 if (!(srcpr = get_proto(src))) {
01598 if (option_debug)
01599 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01600 ast_channel_unlock(dest);
01601 ast_channel_unlock(src);
01602 return 0;
01603 }
01604
01605
01606 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01607 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01608 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01609 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01610
01611
01612 if (srcpr->get_codec)
01613 srccodec = srcpr->get_codec(src);
01614 else
01615 srccodec = 0;
01616 if (destpr->get_codec)
01617 destcodec = destpr->get_codec(dest);
01618 else
01619 destcodec = 0;
01620
01621
01622 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01623
01624 ast_channel_unlock(dest);
01625 ast_channel_unlock(src);
01626 return 0;
01627 }
01628 ast_rtp_pt_copy(destp, srcp);
01629 if (vdestp && vsrcp)
01630 ast_rtp_pt_copy(vdestp, vsrcp);
01631 if (media) {
01632
01633 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01634 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01635 }
01636 ast_channel_unlock(dest);
01637 ast_channel_unlock(src);
01638 if (option_debug)
01639 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01640 return 1;
01641 }
01642
01643
01644
01645
01646
01647 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01648 {
01649 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01650 return;
01651
01652 ast_mutex_lock(&rtp->bridge_lock);
01653 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01654 ast_mutex_unlock(&rtp->bridge_lock);
01655 }
01656
01657
01658
01659 void ast_rtp_unset_m_type(struct ast_rtp* rtp, int pt)
01660 {
01661 if (pt < 0 || pt > MAX_RTP_PT)
01662 return;
01663
01664 ast_mutex_lock(&rtp->bridge_lock);
01665 rtp->current_RTP_PT[pt].isAstFormat = 0;
01666 rtp->current_RTP_PT[pt].code = 0;
01667 ast_mutex_unlock(&rtp->bridge_lock);
01668 }
01669
01670
01671
01672
01673
01674 int ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01675 char *mimeType, char *mimeSubtype,
01676 enum ast_rtp_options options)
01677 {
01678 unsigned int i;
01679 int found = 0;
01680
01681 if (pt < 0 || pt > MAX_RTP_PT)
01682 return -1;
01683
01684 ast_mutex_lock(&rtp->bridge_lock);
01685
01686 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01687 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01688 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01689 found = 1;
01690 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01691 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01692 mimeTypes[i].payloadType.isAstFormat &&
01693 (options & AST_RTP_OPT_G726_NONSTANDARD))
01694 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01695 break;
01696 }
01697 }
01698
01699 ast_mutex_unlock(&rtp->bridge_lock);
01700
01701 return (found ? 0 : -1);
01702 }
01703
01704
01705
01706 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01707 int* astFormats, int* nonAstFormats)
01708 {
01709 int pt;
01710
01711 ast_mutex_lock(&rtp->bridge_lock);
01712
01713 *astFormats = *nonAstFormats = 0;
01714 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01715 if (rtp->current_RTP_PT[pt].isAstFormat) {
01716 *astFormats |= rtp->current_RTP_PT[pt].code;
01717 } else {
01718 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01719 }
01720 }
01721
01722 ast_mutex_unlock(&rtp->bridge_lock);
01723
01724 return;
01725 }
01726
01727 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01728 {
01729 struct rtpPayloadType result;
01730
01731 result.isAstFormat = result.code = 0;
01732
01733 if (pt < 0 || pt > MAX_RTP_PT)
01734 return result;
01735
01736
01737 ast_mutex_lock(&rtp->bridge_lock);
01738 result = rtp->current_RTP_PT[pt];
01739 ast_mutex_unlock(&rtp->bridge_lock);
01740
01741
01742 if (!result.code)
01743 result = static_RTP_PT[pt];
01744
01745 return result;
01746 }
01747
01748
01749 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01750 {
01751 int pt = 0;
01752
01753 ast_mutex_lock(&rtp->bridge_lock);
01754
01755 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01756 code == rtp->rtp_lookup_code_cache_code) {
01757
01758 pt = rtp->rtp_lookup_code_cache_result;
01759 ast_mutex_unlock(&rtp->bridge_lock);
01760 return pt;
01761 }
01762
01763
01764 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01765 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01766 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01767 rtp->rtp_lookup_code_cache_code = code;
01768 rtp->rtp_lookup_code_cache_result = pt;
01769 ast_mutex_unlock(&rtp->bridge_lock);
01770 return pt;
01771 }
01772 }
01773
01774
01775 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01776 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01777 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01778 rtp->rtp_lookup_code_cache_code = code;
01779 rtp->rtp_lookup_code_cache_result = pt;
01780 ast_mutex_unlock(&rtp->bridge_lock);
01781 return pt;
01782 }
01783 }
01784
01785 ast_mutex_unlock(&rtp->bridge_lock);
01786
01787 return -1;
01788 }
01789
01790 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01791 enum ast_rtp_options options)
01792 {
01793 unsigned int i;
01794
01795 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01796 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01797 if (isAstFormat &&
01798 (code == AST_FORMAT_G726_AAL2) &&
01799 (options & AST_RTP_OPT_G726_NONSTANDARD))
01800 return "G726-32";
01801 else
01802 return mimeTypes[i].subtype;
01803 }
01804 }
01805
01806 return "";
01807 }
01808
01809 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01810 const int isAstFormat, enum ast_rtp_options options)
01811 {
01812 int format;
01813 unsigned len;
01814 char *end = buf;
01815 char *start = buf;
01816
01817 if (!buf || !size)
01818 return NULL;
01819
01820 snprintf(end, size, "0x%x (", capability);
01821
01822 len = strlen(end);
01823 end += len;
01824 size -= len;
01825 start = end;
01826
01827 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01828 if (capability & format) {
01829 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01830
01831 snprintf(end, size, "%s|", name);
01832 len = strlen(end);
01833 end += len;
01834 size -= len;
01835 }
01836 }
01837
01838 if (start == end)
01839 snprintf(start, size, "nothing)");
01840 else if (size > 1)
01841 *(end -1) = ')';
01842
01843 return buf;
01844 }
01845
01846 static int rtp_socket(void)
01847 {
01848 int s;
01849 long flags;
01850 s = socket(AF_INET, SOCK_DGRAM, 0);
01851 if (s > -1) {
01852 flags = fcntl(s, F_GETFL);
01853 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01854 #ifdef SO_NO_CHECK
01855 if (nochecksums)
01856 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01857 #endif
01858 }
01859 return s;
01860 }
01861
01862
01863
01864
01865
01866
01867 static struct ast_rtcp *ast_rtcp_new(void)
01868 {
01869 struct ast_rtcp *rtcp;
01870
01871 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01872 return NULL;
01873 rtcp->s = rtp_socket();
01874
01875 rtcp->us.sin_family = AF_INET;
01876 rtcp->them.sin_family = AF_INET;
01877 rtcp->schedid = -1;
01878
01879 if (rtcp->s < 0) {
01880 free(rtcp);
01881 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01882 return NULL;
01883 }
01884
01885 return rtcp;
01886 }
01887
01888
01889
01890
01891
01892 void ast_rtp_new_init(struct ast_rtp *rtp)
01893 {
01894 ast_mutex_init(&rtp->bridge_lock);
01895
01896 rtp->them.sin_family = AF_INET;
01897 rtp->us.sin_family = AF_INET;
01898 rtp->ssrc = ast_random();
01899 rtp->seqno = ast_random() & 0xffff;
01900 ast_set_flag(rtp, FLAG_HAS_DTMF);
01901
01902 return;
01903 }
01904
01905 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01906 {
01907 struct ast_rtp *rtp;
01908 int x;
01909 int first;
01910 int startplace;
01911
01912 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01913 return NULL;
01914
01915 ast_rtp_new_init(rtp);
01916
01917 rtp->s = rtp_socket();
01918 ast_log(LOG_NOTICE, "socket RTP fd: %i\n", rtp->s);
01919 if (rtp->s < 0) {
01920 free(rtp);
01921 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01922 return NULL;
01923 }
01924 if (sched && rtcpenable) {
01925 rtp->sched = sched;
01926 rtp->rtcp = ast_rtcp_new();
01927 ast_log(LOG_NOTICE, "socket RTCP fd: %i\n", rtp->rtcp->s);
01928 }
01929
01930
01931 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01932 x = x & ~1;
01933
01934 startplace = x;
01935
01936 for (;;) {
01937
01938 rtp->us.sin_port = htons(x);
01939 rtp->us.sin_addr = addr;
01940
01941 if (rtp->rtcp) {
01942 rtp->rtcp->us.sin_port = htons(x + 1);
01943 rtp->rtcp->us.sin_addr = addr;
01944 }
01945
01946 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01947 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01948 break;
01949 if (!first) {
01950
01951 close(rtp->s);
01952 rtp->s = rtp_socket();
01953 ast_log(LOG_NOTICE, "socket RTP2 fd: %i\n", rtp->s);
01954 }
01955 if (errno != EADDRINUSE) {
01956
01957 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01958 close(rtp->s);
01959 if (rtp->rtcp) {
01960 close(rtp->rtcp->s);
01961 free(rtp->rtcp);
01962 }
01963 free(rtp);
01964 return NULL;
01965 }
01966
01967 x += 2;
01968
01969 if (x > rtpend)
01970
01971 x = (rtpstart + 1) & ~1;
01972
01973 if (x == startplace) {
01974
01975 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01976 close(rtp->s);
01977 if (rtp->rtcp) {
01978 close(rtp->rtcp->s);
01979 free(rtp->rtcp);
01980 }
01981 free(rtp);
01982 return NULL;
01983 }
01984 }
01985 rtp->sched = sched;
01986 rtp->io = io;
01987 if (callbackmode) {
01988 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01989 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01990 }
01991 ast_rtp_pt_default(rtp);
01992 return rtp;
01993 }
01994
01995 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01996 {
01997 struct in_addr ia;
01998
01999 memset(&ia, 0, sizeof(ia));
02000 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
02001 }
02002
02003 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
02004 {
02005 int res;
02006
02007 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
02008 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
02009 return res;
02010 }
02011
02012 void ast_rtp_new_source(struct ast_rtp *rtp)
02013 {
02014 if (rtp) {
02015 rtp->set_marker_bit = 1;
02016 }
02017 return;
02018 }
02019
02020 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02021 {
02022 rtp->them.sin_port = them->sin_port;
02023 rtp->them.sin_addr = them->sin_addr;
02024 if (rtp->rtcp) {
02025 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
02026 rtp->rtcp->them.sin_addr = them->sin_addr;
02027 }
02028 rtp->rxseqno = 0;
02029 }
02030
02031 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02032 {
02033 if ((them->sin_family != AF_INET) ||
02034 (them->sin_port != rtp->them.sin_port) ||
02035 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
02036 them->sin_family = AF_INET;
02037 them->sin_port = rtp->them.sin_port;
02038 them->sin_addr = rtp->them.sin_addr;
02039 return 1;
02040 }
02041 return 0;
02042 }
02043
02044 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
02045 {
02046 *us = rtp->us;
02047 }
02048
02049 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02050 {
02051 struct ast_rtp *bridged = NULL;
02052
02053 ast_mutex_lock(&rtp->bridge_lock);
02054 bridged = rtp->bridged;
02055 ast_mutex_unlock(&rtp->bridge_lock);
02056
02057 return bridged;
02058 }
02059
02060 void ast_rtp_stop(struct ast_rtp *rtp)
02061 {
02062 if (rtp->rtcp) {
02063 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02064 }
02065
02066 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02067 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02068 if (rtp->rtcp) {
02069 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02070 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02071 }
02072
02073 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02074 }
02075
02076 void ast_rtp_reset(struct ast_rtp *rtp)
02077 {
02078 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02079 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02080 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02081 rtp->lastts = 0;
02082 rtp->lastdigitts = 0;
02083 rtp->lastrxts = 0;
02084 rtp->lastividtimestamp = 0;
02085 rtp->lastovidtimestamp = 0;
02086 rtp->lasteventseqn = 0;
02087 rtp->lastevent = 0;
02088 rtp->lasttxformat = 0;
02089 rtp->lastrxformat = 0;
02090 rtp->dtmfcount = 0;
02091 rtp->dtmfsamples = 0;
02092 rtp->seqno = 0;
02093 rtp->rxseqno = 0;
02094 }
02095
02096 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02097 {
02098
02099
02100
02101
02102
02103
02104
02105
02106
02107
02108
02109
02110 if (qual && rtp) {
02111 qual->local_ssrc = rtp->ssrc;
02112 qual->local_jitter = rtp->rxjitter;
02113 qual->local_count = rtp->rxcount;
02114 qual->remote_ssrc = rtp->themssrc;
02115 qual->remote_count = rtp->txcount;
02116 if (rtp->rtcp) {
02117 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02118 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02119 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02120 qual->rtt = rtp->rtcp->rtt;
02121 }
02122 }
02123 if (rtp->rtcp) {
02124 snprintf(rtp->rtcp->quality, sizeof(rtp->rtcp->quality),
02125 "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f",
02126 rtp->ssrc,
02127 rtp->themssrc,
02128 rtp->rtcp->expected_prior - rtp->rtcp->received_prior,
02129 rtp->rxjitter,
02130 rtp->rxcount,
02131 (double)rtp->rtcp->reported_jitter / 65536.0,
02132 rtp->txcount,
02133 rtp->rtcp->reported_lost,
02134 rtp->rtcp->rtt);
02135 return rtp->rtcp->quality;
02136 } else
02137 return "<Unknown> - RTP/RTCP has already been destroyed";
02138 }
02139
02140 void ast_rtp_destroy(struct ast_rtp *rtp)
02141 {
02142 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02143
02144 ast_verbose(" RTP-stats\n");
02145 ast_verbose("* Our Receiver:\n");
02146 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02147 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02148 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02149 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02150 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02151 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02152 ast_verbose("* Our Sender:\n");
02153 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02154 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02155 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02156 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter / (unsigned int)65536.0);
02157 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02158 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02159 }
02160
02161 if (rtp->smoother)
02162 ast_smoother_free(rtp->smoother);
02163 if (rtp->ioid)
02164 ast_io_remove(rtp->io, rtp->ioid);
02165 if (rtp->s > -1)
02166 close(rtp->s);
02167 if (rtp->rtcp) {
02168 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02169 close(rtp->rtcp->s);
02170 free(rtp->rtcp);
02171 rtp->rtcp=NULL;
02172 }
02173
02174 ast_mutex_destroy(&rtp->bridge_lock);
02175
02176 free(rtp);
02177 }
02178
02179 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02180 {
02181 struct timeval t;
02182 long ms;
02183 if (ast_tvzero(rtp->txcore)) {
02184 rtp->txcore = ast_tvnow();
02185
02186 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02187 }
02188
02189 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02190 ms = ast_tvdiff_ms(t, rtp->txcore);
02191 if (ms < 0)
02192 ms = 0;
02193
02194 rtp->txcore = t;
02195 return (unsigned int) ms;
02196 }
02197
02198
02199 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02200 {
02201 unsigned int *rtpheader;
02202 int hdrlen = 12, res = 0, i = 0, payload = 0;
02203 char data[256];
02204
02205 if ((digit <= '9') && (digit >= '0'))
02206 digit -= '0';
02207 else if (digit == '*')
02208 digit = 10;
02209 else if (digit == '#')
02210 digit = 11;
02211 else if ((digit >= 'A') && (digit <= 'D'))
02212 digit = digit - 'A' + 12;
02213 else if ((digit >= 'a') && (digit <= 'd'))
02214 digit = digit - 'a' + 12;
02215 else {
02216 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02217 return 0;
02218 }
02219
02220
02221 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02222 return 0;
02223
02224 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02225
02226 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02227 rtp->send_duration = 160;
02228
02229
02230 rtpheader = (unsigned int *)data;
02231 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02232 rtpheader[1] = htonl(rtp->lastdigitts);
02233 rtpheader[2] = htonl(rtp->ssrc);
02234
02235 for (i = 0; i < 2; i++) {
02236 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02237 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02238 if (res < 0)
02239 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02240 ast_inet_ntoa(rtp->them.sin_addr),
02241 ntohs(rtp->them.sin_port), strerror(errno));
02242 if (rtp_debug_test_addr(&rtp->them))
02243 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02244 ast_inet_ntoa(rtp->them.sin_addr),
02245 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02246
02247 rtp->seqno++;
02248
02249 rtp->send_duration += 160;
02250
02251 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02252 }
02253
02254
02255 rtp->sending_digit = 1;
02256 rtp->send_digit = digit;
02257 rtp->send_payload = payload;
02258
02259 return 0;
02260 }
02261
02262
02263 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02264 {
02265 unsigned int *rtpheader;
02266 int hdrlen = 12, res = 0;
02267 char data[256];
02268
02269 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02270 return 0;
02271
02272
02273 rtpheader = (unsigned int *)data;
02274 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02275 rtpheader[1] = htonl(rtp->lastdigitts);
02276 rtpheader[2] = htonl(rtp->ssrc);
02277 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02278 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02279
02280
02281 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02282 if (res < 0)
02283 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02284 ast_inet_ntoa(rtp->them.sin_addr),
02285 ntohs(rtp->them.sin_port), strerror(errno));
02286 if (rtp_debug_test_addr(&rtp->them))
02287 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02288 ast_inet_ntoa(rtp->them.sin_addr),
02289 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02290
02291
02292 rtp->seqno++;
02293
02294 rtp->send_duration += 160;
02295
02296 return 0;
02297 }
02298
02299
02300 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02301 {
02302 unsigned int *rtpheader;
02303 int hdrlen = 12, res = 0, i = 0;
02304 char data[256];
02305
02306
02307 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02308 return 0;
02309
02310 if ((digit <= '9') && (digit >= '0'))
02311 digit -= '0';
02312 else if (digit == '*')
02313 digit = 10;
02314 else if (digit == '#')
02315 digit = 11;
02316 else if ((digit >= 'A') && (digit <= 'D'))
02317 digit = digit - 'A' + 12;
02318 else if ((digit >= 'a') && (digit <= 'd'))
02319 digit = digit - 'a' + 12;
02320 else {
02321 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02322 return 0;
02323 }
02324
02325 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02326
02327 rtpheader = (unsigned int *)data;
02328 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02329 rtpheader[1] = htonl(rtp->lastdigitts);
02330 rtpheader[2] = htonl(rtp->ssrc);
02331 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02332
02333 rtpheader[3] |= htonl((1 << 23));
02334 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02335
02336 for (i = 0; i < 3; i++) {
02337 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02338 if (res < 0)
02339 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02340 ast_inet_ntoa(rtp->them.sin_addr),
02341 ntohs(rtp->them.sin_port), strerror(errno));
02342 if (rtp_debug_test_addr(&rtp->them))
02343 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02344 ast_inet_ntoa(rtp->them.sin_addr),
02345 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02346 }
02347 rtp->sending_digit = 0;
02348 rtp->send_digit = 0;
02349
02350 rtp->lastdigitts += 960;
02351 rtp->seqno++;
02352
02353 return res;
02354 }
02355
02356
02357 int ast_rtcp_send_h261fur(void *data)
02358 {
02359 struct ast_rtp *rtp = data;
02360 int res;
02361
02362 rtp->rtcp->sendfur = 1;
02363 res = ast_rtcp_write(data);
02364
02365 return res;
02366 }
02367
02368
02369 static int ast_rtcp_write_sr(const void *data)
02370 {
02371 struct ast_rtp *rtp = (struct ast_rtp *)data;
02372 int res;
02373 int len = 0;
02374 struct timeval now;
02375 unsigned int now_lsw;
02376 unsigned int now_msw;
02377 unsigned int *rtcpheader;
02378 unsigned int lost;
02379 unsigned int extended;
02380 unsigned int expected;
02381 unsigned int expected_interval;
02382 unsigned int received_interval;
02383 int lost_interval;
02384 int fraction;
02385 struct timeval dlsr;
02386 char bdata[512];
02387
02388
02389 if (!rtp || !rtp->rtcp)
02390 return 0;
02391
02392 if (!rtp->rtcp->them.sin_addr.s_addr) {
02393 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02394 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02395 return 0;
02396 }
02397
02398 gettimeofday(&now, NULL);
02399 timeval2ntp(now, &now_msw, &now_lsw);
02400 rtcpheader = (unsigned int *)bdata;
02401 rtcpheader[1] = htonl(rtp->ssrc);
02402 rtcpheader[2] = htonl(now_msw);
02403 rtcpheader[3] = htonl(now_lsw);
02404 rtcpheader[4] = htonl(rtp->lastts);
02405 rtcpheader[5] = htonl(rtp->txcount);
02406 rtcpheader[6] = htonl(rtp->txoctetcount);
02407 len += 28;
02408
02409 extended = rtp->cycles + rtp->lastrxseqno;
02410 expected = extended - rtp->seedrxseqno + 1;
02411 if (rtp->rxcount > expected)
02412 expected += rtp->rxcount - expected;
02413 lost = expected - rtp->rxcount;
02414 expected_interval = expected - rtp->rtcp->expected_prior;
02415 rtp->rtcp->expected_prior = expected;
02416 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02417 rtp->rtcp->received_prior = rtp->rxcount;
02418 lost_interval = expected_interval - received_interval;
02419 if (expected_interval == 0 || lost_interval <= 0)
02420 fraction = 0;
02421 else
02422 fraction = (lost_interval << 8) / expected_interval;
02423 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02424 rtcpheader[7] = htonl(rtp->themssrc);
02425 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02426 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02427 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02428 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02429 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02430 len += 24;
02431
02432 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02433
02434 if (rtp->rtcp->sendfur) {
02435 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02436 rtcpheader[14] = htonl(rtp->ssrc);
02437 len += 8;
02438 rtp->rtcp->sendfur = 0;
02439 }
02440
02441
02442
02443 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02444 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02445 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02446 len += 12;
02447
02448 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02449 if (res < 0) {
02450 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));
02451 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02452 return 0;
02453 }
02454
02455
02456 gettimeofday(&rtp->rtcp->txlsr, NULL);
02457 rtp->rtcp->sr_count++;
02458
02459 rtp->rtcp->lastsrtxcount = rtp->txcount;
02460
02461 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02462 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02463 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02464 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02465 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02466 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02467 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02468 ast_verbose(" Report block:\n");
02469 ast_verbose(" Fraction lost: %u\n", fraction);
02470 ast_verbose(" Cumulative loss: %u\n", lost);
02471 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02472 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02473 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02474 }
02475 return res;
02476 }
02477
02478
02479 static int ast_rtcp_write_rr(const void *data)
02480 {
02481 struct ast_rtp *rtp = (struct ast_rtp *)data;
02482 int res;
02483 int len = 32;
02484 unsigned int lost;
02485 unsigned int extended;
02486 unsigned int expected;
02487 unsigned int expected_interval;
02488 unsigned int received_interval;
02489 int lost_interval;
02490 struct timeval now;
02491 unsigned int *rtcpheader;
02492 char bdata[1024];
02493 struct timeval dlsr;
02494 int fraction;
02495
02496 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02497 return 0;
02498
02499 if (!rtp->rtcp->them.sin_addr.s_addr) {
02500 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02501 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02502 return 0;
02503 }
02504
02505 extended = rtp->cycles + rtp->lastrxseqno;
02506 expected = extended - rtp->seedrxseqno + 1;
02507 lost = expected - rtp->rxcount;
02508 expected_interval = expected - rtp->rtcp->expected_prior;
02509 rtp->rtcp->expected_prior = expected;
02510 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02511 rtp->rtcp->received_prior = rtp->rxcount;
02512 lost_interval = expected_interval - received_interval;
02513 if (expected_interval == 0 || lost_interval <= 0)
02514 fraction = 0;
02515 else
02516 fraction = (lost_interval << 8) / expected_interval;
02517 gettimeofday(&now, NULL);
02518 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02519 rtcpheader = (unsigned int *)bdata;
02520 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02521 rtcpheader[1] = htonl(rtp->ssrc);
02522 rtcpheader[2] = htonl(rtp->themssrc);
02523 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02524 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02525 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02526 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02527 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02528
02529 if (rtp->rtcp->sendfur) {
02530 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02531 rtcpheader[9] = htonl(rtp->ssrc);
02532 len += 8;
02533 rtp->rtcp->sendfur = 0;
02534 }
02535
02536
02537
02538 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02539 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02540 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02541 len += 12;
02542
02543 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02544
02545 if (res < 0) {
02546 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02547
02548 AST_SCHED_DEL(rtp->sched, rtp->rtcp->schedid);
02549 return 0;
02550 }
02551
02552 rtp->rtcp->rr_count++;
02553
02554 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02555 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02556 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02557 " IA jitter: %.4f\n"
02558 " Their last SR: %u\n"
02559 " DLSR: %4.4f (sec)\n\n",
02560 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02561 ntohs(rtp->rtcp->them.sin_port),
02562 rtp->ssrc, rtp->themssrc, fraction, lost,
02563 rtp->rxjitter,
02564 rtp->rtcp->themrxlsr,
02565 (double)(ntohl(rtcpheader[7])/65536.0));
02566 }
02567
02568 return res;
02569 }
02570
02571
02572
02573
02574 static int ast_rtcp_write(const void *data)
02575 {
02576 struct ast_rtp *rtp = (struct ast_rtp *)data;
02577 int res;
02578
02579 if (!rtp || !rtp->rtcp)
02580 return 0;
02581
02582 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02583 res = ast_rtcp_write_sr(data);
02584 else
02585 res = ast_rtcp_write_rr(data);
02586
02587 return res;
02588 }
02589
02590
02591 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02592 {
02593 unsigned int *rtpheader;
02594 int hdrlen = 12;
02595 int res;
02596 int payload;
02597 char data[256];
02598 level = 127 - (level & 0x7f);
02599 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02600
02601
02602 if (!rtp->them.sin_addr.s_addr)
02603 return 0;
02604
02605 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02606
02607
02608 rtpheader = (unsigned int *)data;
02609 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02610 rtpheader[1] = htonl(rtp->lastts);
02611 rtpheader[2] = htonl(rtp->ssrc);
02612 data[12] = level;
02613 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02614 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02615 if (res <0)
02616 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));
02617 if (rtp_debug_test_addr(&rtp->them))
02618 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02619 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02620
02621 }
02622 return 0;
02623 }
02624
02625 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02626 {
02627 unsigned char *rtpheader;
02628 int hdrlen = 12;
02629 int res;
02630 unsigned int ms;
02631 int pred;
02632 int mark = 0;
02633
02634 ms = calc_txstamp(rtp, &f->delivery);
02635
02636 if (f->frametype == AST_FRAME_VOICE) {
02637 pred = rtp->lastts + f->samples;
02638
02639
02640 rtp->lastts = rtp->lastts + ms * 8;
02641 if (ast_tvzero(f->delivery)) {
02642
02643
02644 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02645 rtp->lastts = pred;
02646 else {
02647 if (option_debug > 2)
02648 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02649 mark = 1;
02650 }
02651 }
02652 } else if (f->frametype == AST_FRAME_VIDEO) {
02653 mark = f->subclass & 0x1;
02654 pred = rtp->lastovidtimestamp + f->samples;
02655
02656 rtp->lastts = rtp->lastts + ms * 90;
02657
02658 if (ast_tvzero(f->delivery)) {
02659 if (abs(rtp->lastts - pred) < 7200) {
02660 rtp->lastts = pred;
02661 rtp->lastovidtimestamp += f->samples;
02662 } else {
02663 if (option_debug > 2)
02664 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);
02665 rtp->lastovidtimestamp = rtp->lastts;
02666 }
02667 }
02668 }
02669
02670
02671 if (rtp->set_marker_bit) {
02672 mark = 1;
02673 rtp->set_marker_bit = 0;
02674 }
02675
02676
02677
02678
02679 if (rtp->lastts > rtp->lastdigitts)
02680 rtp->lastdigitts = rtp->lastts;
02681
02682 if (ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO))
02683 rtp->lastts = f->ts * 8;
02684
02685
02686 rtpheader = (unsigned char *)(f->data - hdrlen);
02687
02688 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02689 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02690 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02691
02692 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02693 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02694 if (res <0) {
02695 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02696 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));
02697 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02698
02699 if (option_debug || rtpdebug)
02700 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));
02701 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02702 }
02703 } else {
02704 rtp->txcount++;
02705 rtp->txoctetcount +=(res - hdrlen);
02706
02707 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02708 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02709 }
02710
02711 if (rtp_debug_test_addr(&rtp->them))
02712 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02713 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02714 }
02715
02716 rtp->seqno++;
02717
02718 return 0;
02719 }
02720
02721 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02722 {
02723 int x;
02724 for (x = 0; x < 32; x++) {
02725 rtp->pref.order[x] = prefs->order[x];
02726 rtp->pref.framing[x] = prefs->framing[x];
02727 }
02728 if (rtp->smoother)
02729 ast_smoother_free(rtp->smoother);
02730 rtp->smoother = NULL;
02731 return 0;
02732 }
02733
02734 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02735 {
02736 return &rtp->pref;
02737 }
02738
02739 int ast_rtp_codec_getformat(int pt)
02740 {
02741 if (pt < 0 || pt > MAX_RTP_PT)
02742 return 0;
02743
02744 if (static_RTP_PT[pt].isAstFormat)
02745 return static_RTP_PT[pt].code;
02746 else
02747 return 0;
02748 }
02749
02750 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02751 {
02752 struct ast_frame *f;
02753 int codec;
02754 int hdrlen = 12;
02755 int subclass;
02756
02757
02758
02759 if (!rtp->them.sin_addr.s_addr)
02760 return 0;
02761
02762
02763 if (!_f->datalen)
02764 return 0;
02765
02766
02767 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02768 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02769 return -1;
02770 }
02771
02772 subclass = _f->subclass;
02773 if (_f->frametype == AST_FRAME_VIDEO)
02774 subclass &= ~0x1;
02775
02776 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02777 if (codec < 0) {
02778 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02779 return -1;
02780 }
02781
02782 if (rtp->lasttxformat != subclass) {
02783
02784 if (option_debug)
02785 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02786 rtp->lasttxformat = subclass;
02787 if (rtp->smoother)
02788 ast_smoother_free(rtp->smoother);
02789 rtp->smoother = NULL;
02790 }
02791
02792 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX && subclass != AST_FORMAT_G723_1) {
02793 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02794 if (fmt.inc_ms) {
02795 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02796 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));
02797 return -1;
02798 }
02799 if (fmt.flags)
02800 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02801 if (option_debug)
02802 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));
02803 }
02804 }
02805 if (rtp->smoother) {
02806 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02807 ast_smoother_feed_be(rtp->smoother, _f);
02808 } else {
02809 ast_smoother_feed(rtp->smoother, _f);
02810 }
02811
02812 while ((f = ast_smoother_read(rtp->smoother)) && (f->data)) {
02813 if (f->subclass == AST_FORMAT_G722) {
02814
02815 f->samples /= 2;
02816 }
02817
02818 ast_rtp_raw_write(rtp, f, codec);
02819 }
02820 } else {
02821
02822 if (_f->offset < hdrlen) {
02823 f = ast_frdup(_f);
02824 } else {
02825 f = _f;
02826 }
02827 if (f->data) {
02828 if (f->subclass == AST_FORMAT_G722) {
02829
02830 f->samples /= 2;
02831 }
02832 ast_rtp_raw_write(rtp, f, codec);
02833 }
02834 if (f != _f)
02835 ast_frfree(f);
02836 }
02837
02838 return 0;
02839 }
02840
02841
02842 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02843 {
02844 AST_LIST_LOCK(&protos);
02845 AST_LIST_REMOVE(&protos, proto, list);
02846 AST_LIST_UNLOCK(&protos);
02847 }
02848
02849
02850 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02851 {
02852 struct ast_rtp_protocol *cur;
02853
02854 AST_LIST_LOCK(&protos);
02855 AST_LIST_TRAVERSE(&protos, cur, list) {
02856 if (!strcmp(cur->type, proto->type)) {
02857 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02858 AST_LIST_UNLOCK(&protos);
02859 return -1;
02860 }
02861 }
02862 AST_LIST_INSERT_HEAD(&protos, proto, list);
02863 AST_LIST_UNLOCK(&protos);
02864
02865 return 0;
02866 }
02867
02868
02869 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)
02870 {
02871 struct ast_frame *fr = NULL;
02872 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02873 int oldcodec0 = codec0, oldcodec1 = codec1;
02874 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02875 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02876
02877
02878
02879
02880 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02881 ast_rtp_get_peer(p1, &ac1);
02882 if (vp1)
02883 ast_rtp_get_peer(vp1, &vac1);
02884 } else
02885 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02886
02887
02888 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02889 ast_rtp_get_peer(p0, &ac0);
02890 if (vp0)
02891 ast_rtp_get_peer(vp0, &vac0);
02892 } else
02893 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02894
02895
02896 ast_channel_unlock(c0);
02897 ast_channel_unlock(c1);
02898
02899
02900 cs[0] = c0;
02901 cs[1] = c1;
02902 cs[2] = NULL;
02903 for (;;) {
02904
02905 if ((c0->tech_pvt != pvt0) ||
02906 (c1->tech_pvt != pvt1) ||
02907 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
02908 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
02909 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02910 if (c0->tech_pvt == pvt0)
02911 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02912 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02913 if (c1->tech_pvt == pvt1)
02914 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02915 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02916 return AST_BRIDGE_RETRY;
02917 }
02918
02919
02920 ast_rtp_get_peer(p1, &t1);
02921 if (vp1)
02922 ast_rtp_get_peer(vp1, &vt1);
02923 if (pr1->get_codec)
02924 codec1 = pr1->get_codec(c1);
02925 ast_rtp_get_peer(p0, &t0);
02926 if (vp0)
02927 ast_rtp_get_peer(vp0, &vt0);
02928 if (pr0->get_codec)
02929 codec0 = pr0->get_codec(c0);
02930 if ((inaddrcmp(&t1, &ac1)) ||
02931 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02932 (codec1 != oldcodec1)) {
02933 if (option_debug > 1) {
02934 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02935 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02936 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02937 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02938 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02939 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02940 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02941 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02942 }
02943 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)))
02944 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02945 memcpy(&ac1, &t1, sizeof(ac1));
02946 memcpy(&vac1, &vt1, sizeof(vac1));
02947 oldcodec1 = codec1;
02948 }
02949 if ((inaddrcmp(&t0, &ac0)) ||
02950 (vp0 && inaddrcmp(&vt0, &vac0))) {
02951 if (option_debug > 1) {
02952 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02953 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02954 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02955 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02956 }
02957 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)))
02958 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02959 memcpy(&ac0, &t0, sizeof(ac0));
02960 memcpy(&vac0, &vt0, sizeof(vac0));
02961 oldcodec0 = codec0;
02962 }
02963
02964
02965 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02966 if (!timeoutms) {
02967 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02968 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02969 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02970 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02971 return AST_BRIDGE_RETRY;
02972 }
02973 if (option_debug)
02974 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02975 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02976 break;
02977 continue;
02978 }
02979 fr = ast_read(who);
02980 other = (who == c0) ? c1 : c0;
02981 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
02982 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02983 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02984
02985 *fo = fr;
02986 *rc = who;
02987 if (option_debug)
02988 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02989 if (c0->tech_pvt == pvt0)
02990 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02991 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02992 if (c1->tech_pvt == pvt1)
02993 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02994 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02995 return AST_BRIDGE_COMPLETE;
02996 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
02997 if ((fr->subclass == AST_CONTROL_HOLD) ||
02998 (fr->subclass == AST_CONTROL_UNHOLD) ||
02999 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03000 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03001 if (fr->subclass == AST_CONTROL_HOLD) {
03002
03003 if (who == c0)
03004 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
03005 else
03006 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
03007 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03008
03009 if (who == c0)
03010 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
03011 else
03012 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
03013 }
03014
03015 ast_rtp_get_peer(p0, &t0);
03016 memcpy(&ac0, &t0, sizeof(ac0));
03017 ast_rtp_get_peer(p1, &t1);
03018 memcpy(&ac1, &t1, sizeof(ac1));
03019
03020 if (pr0->get_codec && c0->tech_pvt)
03021 oldcodec0 = codec0 = pr0->get_codec(c0);
03022 if (pr1->get_codec && c1->tech_pvt)
03023 oldcodec1 = codec1 = pr1->get_codec(c1);
03024 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03025 ast_frfree(fr);
03026 } else {
03027 *fo = fr;
03028 *rc = who;
03029 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03030 return AST_BRIDGE_COMPLETE;
03031 }
03032 } else {
03033 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03034 (fr->frametype == AST_FRAME_DTMF_END) ||
03035 (fr->frametype == AST_FRAME_VOICE) ||
03036 (fr->frametype == AST_FRAME_VIDEO) ||
03037 (fr->frametype == AST_FRAME_IMAGE) ||
03038 (fr->frametype == AST_FRAME_HTML) ||
03039 (fr->frametype == AST_FRAME_MODEM) ||
03040 (fr->frametype == AST_FRAME_TEXT)) {
03041 ast_write(other, fr);
03042 }
03043 ast_frfree(fr);
03044 }
03045
03046 cs[2] = cs[0];
03047 cs[0] = cs[1];
03048 cs[1] = cs[2];
03049 }
03050
03051 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
03052 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
03053 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
03054 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
03055
03056 return AST_BRIDGE_FAILED;
03057 }
03058
03059
03060 #ifdef P2P_INTENSE
03061 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
03062 {
03063 int res = 0, hdrlen = 12;
03064 struct sockaddr_in sin;
03065 socklen_t len;
03066 unsigned int *header;
03067 struct ast_rtp *rtp = cbdata, *bridged = NULL;
03068
03069 if (!rtp)
03070 return 1;
03071
03072 len = sizeof(sin);
03073 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
03074 return 1;
03075
03076 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
03077
03078
03079 if ((rtp->nat) &&
03080 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03081 (rtp->them.sin_port != sin.sin_port))) {
03082 rtp->them = sin;
03083 rtp->rxseqno = 0;
03084 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03085 if (option_debug || rtpdebug)
03086 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));
03087 }
03088
03089
03090 if ((bridged = ast_rtp_get_bridged(rtp)))
03091 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03092
03093 return 1;
03094 }
03095
03096
03097 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03098 {
03099
03100 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03101 return 0;
03102
03103
03104 if (rtp->ioid) {
03105 ast_io_remove(rtp->io, rtp->ioid);
03106 rtp->ioid = NULL;
03107 }
03108
03109
03110 fds[0] = chan->fds[0];
03111 chan->fds[0] = -1;
03112
03113
03114 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03115
03116 return 1;
03117 }
03118 #else
03119 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03120 {
03121 return 0;
03122 }
03123 #endif
03124
03125
03126 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03127 {
03128 ast_channel_lock(chan);
03129
03130
03131 ast_io_remove(rtp->io, iod[0]);
03132
03133
03134 chan->fds[0] = fds[0];
03135 ast_channel_unlock(chan);
03136
03137
03138 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03139 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03140
03141 return 0;
03142 }
03143
03144
03145 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03146 {
03147 ast_mutex_lock(&rtp0->bridge_lock);
03148 rtp0->bridged = rtp1;
03149 ast_mutex_unlock(&rtp0->bridge_lock);
03150
03151 return;
03152 }
03153
03154
03155 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)
03156 {
03157 struct ast_frame *fr = NULL;
03158 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03159 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03160 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03161 int p0_callback = 0, p1_callback = 0;
03162 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03163
03164
03165 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03166 p2p_set_bridge(p0, p1);
03167 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03168 p2p_set_bridge(p1, p0);
03169
03170
03171 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03172 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03173
03174
03175 ast_channel_unlock(c0);
03176 ast_channel_unlock(c1);
03177
03178
03179 cs[0] = c0;
03180 cs[1] = c1;
03181 cs[2] = NULL;
03182 for (;;) {
03183
03184 if ((c0->rawreadformat != c1->rawwriteformat) || (c1->rawreadformat != c0->rawwriteformat)) {
03185 ast_log(LOG_DEBUG, "Oooh, formats changed, backing out\n");
03186 res = AST_BRIDGE_FAILED_NOWARN;
03187 break;
03188 }
03189
03190 if ((c0->tech_pvt != pvt0) ||
03191 (c1->tech_pvt != pvt1) ||
03192 (c0->masq || c0->masqr || c1->masq || c1->masqr) ||
03193 (c0->monitor || c0->audiohooks || c1->monitor || c1->audiohooks)) {
03194 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03195 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03196 ast_frfree(fr);
03197 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03198 ast_frfree(fr);
03199 res = AST_BRIDGE_RETRY;
03200 break;
03201 }
03202
03203 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03204 if (!timeoutms) {
03205 res = AST_BRIDGE_RETRY;
03206 break;
03207 }
03208 if (option_debug)
03209 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03210 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03211 break;
03212 continue;
03213 }
03214
03215 fr = ast_read(who);
03216 other = (who == c0) ? c1 : c0;
03217
03218 if (!fr || ((fr->frametype == AST_FRAME_DTMF_BEGIN || fr->frametype == AST_FRAME_DTMF_END) &&
03219 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03220 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03221
03222 *fo = fr;
03223 *rc = who;
03224 if (option_debug)
03225 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03226 res = AST_BRIDGE_COMPLETE;
03227 break;
03228 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03229 if ((fr->subclass == AST_CONTROL_HOLD) ||
03230 (fr->subclass == AST_CONTROL_UNHOLD) ||
03231 (fr->subclass == AST_CONTROL_VIDUPDATE) ||
03232 (fr->subclass == AST_CONTROL_SRCUPDATE)) {
03233
03234 if (fr->subclass == AST_CONTROL_HOLD) {
03235 if (p0_callback)
03236 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03237 if (p1_callback)
03238 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03239 p2p_set_bridge(p0, NULL);
03240 p2p_set_bridge(p1, NULL);
03241 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03242
03243 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03244 p2p_set_bridge(p0, p1);
03245 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03246 p2p_set_bridge(p1, p0);
03247 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03248 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03249 }
03250 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03251 ast_frfree(fr);
03252 } else {
03253 *fo = fr;
03254 *rc = who;
03255 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03256 res = AST_BRIDGE_COMPLETE;
03257 break;
03258 }
03259 } else {
03260 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03261 (fr->frametype == AST_FRAME_DTMF_END) ||
03262 (fr->frametype == AST_FRAME_VOICE) ||
03263 (fr->frametype == AST_FRAME_VIDEO) ||
03264 (fr->frametype == AST_FRAME_IMAGE) ||
03265 (fr->frametype == AST_FRAME_HTML) ||
03266 (fr->frametype == AST_FRAME_MODEM) ||
03267 (fr->frametype == AST_FRAME_TEXT)) {
03268 ast_write(other, fr);
03269 }
03270
03271 ast_frfree(fr);
03272 }
03273
03274 cs[2] = cs[0];
03275 cs[0] = cs[1];
03276 cs[1] = cs[2];
03277 }
03278
03279
03280 if (p0_callback)
03281 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03282 if (p1_callback)
03283 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03284
03285
03286 p2p_set_bridge(p0, NULL);
03287 p2p_set_bridge(p1, NULL);
03288
03289 return res;
03290 }
03291
03292
03293
03294
03295 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)
03296 {
03297 struct ast_rtp *p0 = NULL, *p1 = NULL;
03298 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03299 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03300 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03301 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03302 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03303 int codec0 = 0, codec1 = 0;
03304 void *pvt0 = NULL, *pvt1 = NULL;
03305
03306
03307 ast_channel_lock(c0);
03308 while(ast_channel_trylock(c1)) {
03309 ast_channel_unlock(c0);
03310 usleep(1);
03311 ast_channel_lock(c0);
03312 }
03313
03314
03315 if (ast_check_hangup(c0) || ast_check_hangup(c1)) {
03316 ast_log(LOG_WARNING, "Got hangup while attempting to bridge '%s' and '%s'\n", c0->name, c1->name);
03317 ast_channel_unlock(c0);
03318 ast_channel_unlock(c1);
03319 return AST_BRIDGE_FAILED;
03320 }
03321
03322
03323 if (!(pr0 = get_proto(c0))) {
03324 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03325 ast_channel_unlock(c0);
03326 ast_channel_unlock(c1);
03327 return AST_BRIDGE_FAILED;
03328 }
03329 if (!(pr1 = get_proto(c1))) {
03330 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03331 ast_channel_unlock(c0);
03332 ast_channel_unlock(c1);
03333 return AST_BRIDGE_FAILED;
03334 }
03335
03336
03337 pvt0 = c0->tech_pvt;
03338 pvt1 = c1->tech_pvt;
03339
03340
03341 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03342 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03343 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03344 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03345
03346
03347 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03348 audio_p0_res = AST_RTP_GET_FAILED;
03349 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03350 audio_p1_res = AST_RTP_GET_FAILED;
03351
03352
03353 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03354
03355 ast_channel_unlock(c0);
03356 ast_channel_unlock(c1);
03357 return AST_BRIDGE_FAILED_NOWARN;
03358 }
03359
03360
03361 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03362 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03363 audio_p0_res = AST_RTP_TRY_PARTIAL;
03364 }
03365
03366 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03367 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03368 audio_p1_res = AST_RTP_TRY_PARTIAL;
03369 }
03370
03371
03372
03373
03374
03375
03376
03377
03378
03379
03380
03381
03382
03383
03384 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03385 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03386 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03387 ast_channel_unlock(c0);
03388 ast_channel_unlock(c1);
03389 return AST_BRIDGE_FAILED_NOWARN;
03390 }
03391 audio_p0_res = AST_RTP_TRY_PARTIAL;
03392 audio_p1_res = AST_RTP_TRY_PARTIAL;
03393 }
03394
03395
03396 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF)) ||
03397 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF))) {
03398 ast_channel_unlock(c0);
03399 ast_channel_unlock(c1);
03400 return AST_BRIDGE_FAILED_NOWARN;
03401 }
03402
03403
03404 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03405 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03406 if (codec0 && codec1 && !(codec0 & codec1)) {
03407
03408 if (option_debug)
03409 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03410 ast_channel_unlock(c0);
03411 ast_channel_unlock(c1);
03412 return AST_BRIDGE_FAILED_NOWARN;
03413 }
03414
03415
03416 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03417 struct ast_format_list fmt0, fmt1;
03418
03419
03420 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03421 if (option_debug)
03422 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03423 ast_channel_unlock(c0);
03424 ast_channel_unlock(c1);
03425 return AST_BRIDGE_FAILED_NOWARN;
03426 }
03427
03428 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03429 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03430 if (fmt0.cur_ms != fmt1.cur_ms) {
03431 if (option_debug)
03432 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03433 ast_channel_unlock(c0);
03434 ast_channel_unlock(c1);
03435 return AST_BRIDGE_FAILED_NOWARN;
03436 }
03437
03438 if (option_verbose > 2)
03439 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03440 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03441 } else {
03442 if (option_verbose > 2)
03443 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03444 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03445 }
03446
03447 return res;
03448 }
03449
03450 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03451 {
03452 struct hostent *hp;
03453 struct ast_hostent ahp;
03454 int port = 0;
03455 char *p, *arg;
03456
03457 if (argc != 4)
03458 return RESULT_SHOWUSAGE;
03459 arg = argv[3];
03460 p = strstr(arg, ":");
03461 if (p) {
03462 *p = '\0';
03463 p++;
03464 port = atoi(p);
03465 }
03466 hp = ast_gethostbyname(arg, &ahp);
03467 if (hp == NULL)
03468 return RESULT_SHOWUSAGE;
03469 rtpdebugaddr.sin_family = AF_INET;
03470 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03471 rtpdebugaddr.sin_port = htons(port);
03472 if (port == 0)
03473 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03474 else
03475 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03476 rtpdebug = 1;
03477 return RESULT_SUCCESS;
03478 }
03479
03480 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03481 {
03482 struct hostent *hp;
03483 struct ast_hostent ahp;
03484 int port = 0;
03485 char *p, *arg;
03486 if (argc != 5)
03487 return RESULT_SHOWUSAGE;
03488
03489 arg = argv[4];
03490 p = strstr(arg, ":");
03491 if (p) {
03492 *p = '\0';
03493 p++;
03494 port = atoi(p);
03495 }
03496 hp = ast_gethostbyname(arg, &ahp);
03497 if (hp == NULL)
03498 return RESULT_SHOWUSAGE;
03499 rtcpdebugaddr.sin_family = AF_INET;
03500 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03501 rtcpdebugaddr.sin_port = htons(port);
03502 if (port == 0)
03503 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03504 else
03505 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03506 rtcpdebug = 1;
03507 return RESULT_SUCCESS;
03508 }
03509
03510 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03511 {
03512 struct hostent *hp;
03513 struct ast_hostent ahp;
03514 int port = 0;
03515 char *p, *arg;
03516 if (argc != 4)
03517 return RESULT_SHOWUSAGE;
03518
03519 arg = argv[3];
03520 p = strstr(arg, ":");
03521 if (p) {
03522 *p = '\0';
03523 p++;
03524 port = atoi(p);
03525 }
03526 hp = ast_gethostbyname(arg, &ahp);
03527 if (hp == NULL)
03528 return RESULT_SHOWUSAGE;
03529 rtcpdebugaddr.sin_family = AF_INET;
03530 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03531 rtcpdebugaddr.sin_port = htons(port);
03532 if (port == 0)
03533 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03534 else
03535 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03536 rtcpdebug = 1;
03537 return RESULT_SUCCESS;
03538 }
03539
03540 static int rtp_do_debug(int fd, int argc, char *argv[])
03541 {
03542 if (argc != 2) {
03543 if (argc != 4)
03544 return RESULT_SHOWUSAGE;
03545 return rtp_do_debug_ip(fd, argc, argv);
03546 }
03547 rtpdebug = 1;
03548 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03549 ast_cli(fd, "RTP Debugging Enabled\n");
03550 return RESULT_SUCCESS;
03551 }
03552
03553 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03554 if (argc != 3) {
03555 if (argc != 5)
03556 return RESULT_SHOWUSAGE;
03557 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03558 }
03559 rtcpdebug = 1;
03560 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03561 ast_cli(fd, "RTCP Debugging Enabled\n");
03562 return RESULT_SUCCESS;
03563 }
03564
03565 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03566 if (argc != 2) {
03567 if (argc != 4)
03568 return RESULT_SHOWUSAGE;
03569 return rtcp_do_debug_ip(fd, argc, argv);
03570 }
03571 rtcpdebug = 1;
03572 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03573 ast_cli(fd, "RTCP Debugging Enabled\n");
03574 return RESULT_SUCCESS;
03575 }
03576
03577 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03578 if (argc != 3) {
03579 return RESULT_SHOWUSAGE;
03580 }
03581 rtcpstats = 1;
03582 ast_cli(fd, "RTCP Stats Enabled\n");
03583 return RESULT_SUCCESS;
03584 }
03585
03586 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03587 if (argc != 2) {
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 rtp_no_debug(int fd, int argc, char *argv[])
03596 {
03597 if (argc != 3)
03598 return RESULT_SHOWUSAGE;
03599 rtpdebug = 0;
03600 ast_cli(fd,"RTP Debugging Disabled\n");
03601 return RESULT_SUCCESS;
03602 }
03603
03604 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03605 {
03606 if (argc != 4)
03607 return RESULT_SHOWUSAGE;
03608 rtcpdebug = 0;
03609 ast_cli(fd,"RTCP Debugging Disabled\n");
03610 return RESULT_SUCCESS;
03611 }
03612
03613 static int rtcp_no_debug(int fd, int argc, char *argv[])
03614 {
03615 if (argc != 3)
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_stats_deprecated(int fd, int argc, char *argv[])
03623 {
03624 if (argc != 4)
03625 return RESULT_SHOWUSAGE;
03626 rtcpstats = 0;
03627 ast_cli(fd,"RTCP Stats Disabled\n");
03628 return RESULT_SUCCESS;
03629 }
03630
03631 static int rtcp_no_stats(int fd, int argc, char *argv[])
03632 {
03633 if (argc != 3)
03634 return RESULT_SHOWUSAGE;
03635 rtcpstats = 0;
03636 ast_cli(fd,"RTCP Stats Disabled\n");
03637 return RESULT_SUCCESS;
03638 }
03639
03640 static int stun_do_debug(int fd, int argc, char *argv[])
03641 {
03642 if (argc != 2) {
03643 return RESULT_SHOWUSAGE;
03644 }
03645 stundebug = 1;
03646 ast_cli(fd, "STUN Debugging Enabled\n");
03647 return RESULT_SUCCESS;
03648 }
03649
03650 static int stun_no_debug(int fd, int argc, char *argv[])
03651 {
03652 if (argc != 3)
03653 return RESULT_SHOWUSAGE;
03654 stundebug = 0;
03655 ast_cli(fd, "STUN Debugging Disabled\n");
03656 return RESULT_SUCCESS;
03657 }
03658
03659 static char debug_usage[] =
03660 "Usage: rtp debug [ip host[:port]]\n"
03661 " Enable dumping of all RTP packets to and from host.\n";
03662
03663 static char no_debug_usage[] =
03664 "Usage: rtp debug off\n"
03665 " Disable all RTP debugging\n";
03666
03667 static char stun_debug_usage[] =
03668 "Usage: stun debug\n"
03669 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03670
03671 static char stun_no_debug_usage[] =
03672 "Usage: stun debug off\n"
03673 " Disable STUN debugging\n";
03674
03675 static char rtcp_debug_usage[] =
03676 "Usage: rtcp debug [ip host[:port]]\n"
03677 " Enable dumping of all RTCP packets to and from host.\n";
03678
03679 static char rtcp_no_debug_usage[] =
03680 "Usage: rtcp debug off\n"
03681 " Disable all RTCP debugging\n";
03682
03683 static char rtcp_stats_usage[] =
03684 "Usage: rtcp stats\n"
03685 " Enable dumping of RTCP stats.\n";
03686
03687 static char rtcp_no_stats_usage[] =
03688 "Usage: rtcp stats off\n"
03689 " Disable all RTCP stats\n";
03690
03691 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03692 { "rtp", "no", "debug", NULL },
03693 rtp_no_debug, NULL,
03694 NULL };
03695
03696 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03697 { "rtp", "rtcp", "debug", "ip", NULL },
03698 rtcp_do_debug_deprecated, NULL,
03699 NULL };
03700
03701 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03702 { "rtp", "rtcp", "debug", NULL },
03703 rtcp_do_debug_deprecated, NULL,
03704 NULL };
03705
03706 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03707 { "rtp", "rtcp", "no", "debug", NULL },
03708 rtcp_no_debug_deprecated, NULL,
03709 NULL };
03710
03711 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03712 { "rtp", "rtcp", "stats", NULL },
03713 rtcp_do_stats_deprecated, NULL,
03714 NULL };
03715
03716 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03717 { "rtp", "rtcp", "no", "stats", NULL },
03718 rtcp_no_stats_deprecated, NULL,
03719 NULL };
03720
03721 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03722 { "stun", "no", "debug", NULL },
03723 stun_no_debug, NULL,
03724 NULL };
03725
03726 static struct ast_cli_entry cli_rtp[] = {
03727 { { "rtp", "debug", "ip", NULL },
03728 rtp_do_debug, "Enable RTP debugging on IP",
03729 debug_usage },
03730
03731 { { "rtp", "debug", NULL },
03732 rtp_do_debug, "Enable RTP debugging",
03733 debug_usage },
03734
03735 { { "rtp", "debug", "off", NULL },
03736 rtp_no_debug, "Disable RTP debugging",
03737 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03738
03739 { { "rtcp", "debug", "ip", NULL },
03740 rtcp_do_debug, "Enable RTCP debugging on IP",
03741 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03742
03743 { { "rtcp", "debug", NULL },
03744 rtcp_do_debug, "Enable RTCP debugging",
03745 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03746
03747 { { "rtcp", "debug", "off", NULL },
03748 rtcp_no_debug, "Disable RTCP debugging",
03749 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03750
03751 { { "rtcp", "stats", NULL },
03752 rtcp_do_stats, "Enable RTCP stats",
03753 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03754
03755 { { "rtcp", "stats", "off", NULL },
03756 rtcp_no_stats, "Disable RTCP stats",
03757 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03758
03759 { { "stun", "debug", NULL },
03760 stun_do_debug, "Enable STUN debugging",
03761 stun_debug_usage },
03762
03763 { { "stun", "debug", "off", NULL },
03764 stun_no_debug, "Disable STUN debugging",
03765 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03766 };
03767
03768 int ast_rtp_reload(void)
03769 {
03770 struct ast_config *cfg;
03771 const char *s;
03772
03773 rtpstart = 5000;
03774 rtpend = 31000;
03775 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03776 cfg = ast_config_load("rtp.conf");
03777 if (cfg) {
03778 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03779 rtpstart = atoi(s);
03780 if (rtpstart < 1024)
03781 rtpstart = 1024;
03782 if (rtpstart > 65535)
03783 rtpstart = 65535;
03784 }
03785 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03786 rtpend = atoi(s);
03787 if (rtpend < 1024)
03788 rtpend = 1024;
03789 if (rtpend > 65535)
03790 rtpend = 65535;
03791 }
03792 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03793 rtcpinterval = atoi(s);
03794 if (rtcpinterval == 0)
03795 rtcpinterval = 0;
03796 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03797 rtcpinterval = RTCP_MIN_INTERVALMS;
03798 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03799 rtcpinterval = RTCP_MAX_INTERVALMS;
03800 }
03801 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03802 #ifdef SO_NO_CHECK
03803 if (ast_false(s))
03804 nochecksums = 1;
03805 else
03806 nochecksums = 0;
03807 #else
03808 if (ast_false(s))
03809 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03810 #endif
03811 }
03812 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03813 dtmftimeout = atoi(s);
03814 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03815 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03816 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03817 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03818 };
03819 }
03820 ast_config_destroy(cfg);
03821 }
03822 if (rtpstart >= rtpend) {
03823 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03824 rtpstart = 5000;
03825 rtpend = 31000;
03826 }
03827 if (option_verbose > 1)
03828 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03829 return 0;
03830 }
03831
03832
03833 void ast_rtp_init(void)
03834 {
03835 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03836 ast_rtp_reload();
03837 }
03838