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00029 #include "asterisk.h"
00030
00031 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 78172 $")
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 20
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 };
00176
00177
00178 static int ast_rtcp_write(void *data);
00179 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw);
00180 static int ast_rtcp_write_sr(void *data);
00181 static int ast_rtcp_write_rr(void *data);
00182 static unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp);
00183 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp);
00184 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit);
00185
00186 #define FLAG_3389_WARNING (1 << 0)
00187 #define FLAG_NAT_ACTIVE (3 << 1)
00188 #define FLAG_NAT_INACTIVE (0 << 1)
00189 #define FLAG_NAT_INACTIVE_NOWARN (1 << 1)
00190 #define FLAG_HAS_DTMF (1 << 3)
00191 #define FLAG_P2P_SENT_MARK (1 << 4)
00192 #define FLAG_P2P_NEED_DTMF (1 << 5)
00193 #define FLAG_CALLBACK_MODE (1 << 6)
00194 #define FLAG_DTMF_COMPENSATE (1 << 7)
00195 #define FLAG_HAS_STUN (1 << 8)
00196
00197
00198
00199
00200
00201
00202
00203
00204
00205
00206
00207 struct ast_rtcp {
00208 int s;
00209 struct sockaddr_in us;
00210 struct sockaddr_in them;
00211 unsigned int soc;
00212 unsigned int spc;
00213 unsigned int themrxlsr;
00214 struct timeval rxlsr;
00215 struct timeval txlsr;
00216 unsigned int expected_prior;
00217 unsigned int received_prior;
00218 int schedid;
00219 unsigned int rr_count;
00220 unsigned int sr_count;
00221 unsigned int lastsrtxcount;
00222 double accumulated_transit;
00223 double rtt;
00224 unsigned int reported_jitter;
00225 unsigned int reported_lost;
00226 char quality[AST_MAX_USER_FIELD];
00227 double maxrxjitter;
00228 double minrxjitter;
00229 double maxrtt;
00230 double minrtt;
00231 int sendfur;
00232 };
00233
00234
00235 typedef struct { unsigned int id[4]; } __attribute__((packed)) stun_trans_id;
00236
00237
00238 struct stun_header {
00239 unsigned short msgtype;
00240 unsigned short msglen;
00241 stun_trans_id id;
00242 unsigned char ies[0];
00243 } __attribute__((packed));
00244
00245 struct stun_attr {
00246 unsigned short attr;
00247 unsigned short len;
00248 unsigned char value[0];
00249 } __attribute__((packed));
00250
00251 struct stun_addr {
00252 unsigned char unused;
00253 unsigned char family;
00254 unsigned short port;
00255 unsigned int addr;
00256 } __attribute__((packed));
00257
00258 #define STUN_IGNORE (0)
00259 #define STUN_ACCEPT (1)
00260
00261 #define STUN_BINDREQ 0x0001
00262 #define STUN_BINDRESP 0x0101
00263 #define STUN_BINDERR 0x0111
00264 #define STUN_SECREQ 0x0002
00265 #define STUN_SECRESP 0x0102
00266 #define STUN_SECERR 0x0112
00267
00268 #define STUN_MAPPED_ADDRESS 0x0001
00269 #define STUN_RESPONSE_ADDRESS 0x0002
00270 #define STUN_CHANGE_REQUEST 0x0003
00271 #define STUN_SOURCE_ADDRESS 0x0004
00272 #define STUN_CHANGED_ADDRESS 0x0005
00273 #define STUN_USERNAME 0x0006
00274 #define STUN_PASSWORD 0x0007
00275 #define STUN_MESSAGE_INTEGRITY 0x0008
00276 #define STUN_ERROR_CODE 0x0009
00277 #define STUN_UNKNOWN_ATTRIBUTES 0x000a
00278 #define STUN_REFLECTED_FROM 0x000b
00279
00280 static const char *stun_msg2str(int msg)
00281 {
00282 switch(msg) {
00283 case STUN_BINDREQ:
00284 return "Binding Request";
00285 case STUN_BINDRESP:
00286 return "Binding Response";
00287 case STUN_BINDERR:
00288 return "Binding Error Response";
00289 case STUN_SECREQ:
00290 return "Shared Secret Request";
00291 case STUN_SECRESP:
00292 return "Shared Secret Response";
00293 case STUN_SECERR:
00294 return "Shared Secret Error Response";
00295 }
00296 return "Non-RFC3489 Message";
00297 }
00298
00299 static const char *stun_attr2str(int msg)
00300 {
00301 switch(msg) {
00302 case STUN_MAPPED_ADDRESS:
00303 return "Mapped Address";
00304 case STUN_RESPONSE_ADDRESS:
00305 return "Response Address";
00306 case STUN_CHANGE_REQUEST:
00307 return "Change Request";
00308 case STUN_SOURCE_ADDRESS:
00309 return "Source Address";
00310 case STUN_CHANGED_ADDRESS:
00311 return "Changed Address";
00312 case STUN_USERNAME:
00313 return "Username";
00314 case STUN_PASSWORD:
00315 return "Password";
00316 case STUN_MESSAGE_INTEGRITY:
00317 return "Message Integrity";
00318 case STUN_ERROR_CODE:
00319 return "Error Code";
00320 case STUN_UNKNOWN_ATTRIBUTES:
00321 return "Unknown Attributes";
00322 case STUN_REFLECTED_FROM:
00323 return "Reflected From";
00324 }
00325 return "Non-RFC3489 Attribute";
00326 }
00327
00328 struct stun_state {
00329 const char *username;
00330 const char *password;
00331 };
00332
00333 static int stun_process_attr(struct stun_state *state, struct stun_attr *attr)
00334 {
00335 if (stundebug)
00336 ast_verbose("Found STUN Attribute %s (%04x), length %d\n",
00337 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00338 switch(ntohs(attr->attr)) {
00339 case STUN_USERNAME:
00340 state->username = (const char *) (attr->value);
00341 break;
00342 case STUN_PASSWORD:
00343 state->password = (const char *) (attr->value);
00344 break;
00345 default:
00346 if (stundebug)
00347 ast_verbose("Ignoring STUN attribute %s (%04x), length %d\n",
00348 stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr), ntohs(attr->len));
00349 }
00350 return 0;
00351 }
00352
00353 static void append_attr_string(struct stun_attr **attr, int attrval, const char *s, int *len, int *left)
00354 {
00355 int size = sizeof(**attr) + strlen(s);
00356 if (*left > size) {
00357 (*attr)->attr = htons(attrval);
00358 (*attr)->len = htons(strlen(s));
00359 memcpy((*attr)->value, s, strlen(s));
00360 (*attr) = (struct stun_attr *)((*attr)->value + strlen(s));
00361 *len += size;
00362 *left -= size;
00363 }
00364 }
00365
00366 static void append_attr_address(struct stun_attr **attr, int attrval, struct sockaddr_in *sin, int *len, int *left)
00367 {
00368 int size = sizeof(**attr) + 8;
00369 struct stun_addr *addr;
00370 if (*left > size) {
00371 (*attr)->attr = htons(attrval);
00372 (*attr)->len = htons(8);
00373 addr = (struct stun_addr *)((*attr)->value);
00374 addr->unused = 0;
00375 addr->family = 0x01;
00376 addr->port = sin->sin_port;
00377 addr->addr = sin->sin_addr.s_addr;
00378 (*attr) = (struct stun_attr *)((*attr)->value + 8);
00379 *len += size;
00380 *left -= size;
00381 }
00382 }
00383
00384 static int stun_send(int s, struct sockaddr_in *dst, struct stun_header *resp)
00385 {
00386 return sendto(s, resp, ntohs(resp->msglen) + sizeof(*resp), 0,
00387 (struct sockaddr *)dst, sizeof(*dst));
00388 }
00389
00390 static void stun_req_id(struct stun_header *req)
00391 {
00392 int x;
00393 for (x=0;x<4;x++)
00394 req->id.id[x] = ast_random();
00395 }
00396
00397 size_t ast_rtp_alloc_size(void)
00398 {
00399 return sizeof(struct ast_rtp);
00400 }
00401
00402 void ast_rtp_stun_request(struct ast_rtp *rtp, struct sockaddr_in *suggestion, const char *username)
00403 {
00404 struct stun_header *req;
00405 unsigned char reqdata[1024];
00406 int reqlen, reqleft;
00407 struct stun_attr *attr;
00408
00409 req = (struct stun_header *)reqdata;
00410 stun_req_id(req);
00411 reqlen = 0;
00412 reqleft = sizeof(reqdata) - sizeof(struct stun_header);
00413 req->msgtype = 0;
00414 req->msglen = 0;
00415 attr = (struct stun_attr *)req->ies;
00416 if (username)
00417 append_attr_string(&attr, STUN_USERNAME, username, &reqlen, &reqleft);
00418 req->msglen = htons(reqlen);
00419 req->msgtype = htons(STUN_BINDREQ);
00420 stun_send(rtp->s, suggestion, req);
00421 }
00422
00423 static int stun_handle_packet(int s, struct sockaddr_in *src, unsigned char *data, size_t len)
00424 {
00425 struct stun_header *resp, *hdr = (struct stun_header *)data;
00426 struct stun_attr *attr;
00427 struct stun_state st;
00428 int ret = STUN_IGNORE;
00429 unsigned char respdata[1024];
00430 int resplen, respleft;
00431
00432 if (len < sizeof(struct stun_header)) {
00433 if (option_debug)
00434 ast_log(LOG_DEBUG, "Runt STUN packet (only %zd, wanting at least %zd)\n", len, sizeof(struct stun_header));
00435 return -1;
00436 }
00437 if (stundebug)
00438 ast_verbose("STUN Packet, msg %s (%04x), length: %d\n", stun_msg2str(ntohs(hdr->msgtype)), ntohs(hdr->msgtype), ntohs(hdr->msglen));
00439 if (ntohs(hdr->msglen) > len - sizeof(struct stun_header)) {
00440 if (option_debug)
00441 ast_log(LOG_DEBUG, "Scrambled STUN packet length (got %d, expecting %zd)\n", ntohs(hdr->msglen), len - sizeof(struct stun_header));
00442 } else
00443 len = ntohs(hdr->msglen);
00444 data += sizeof(struct stun_header);
00445 memset(&st, 0, sizeof(st));
00446 while(len) {
00447 if (len < sizeof(struct stun_attr)) {
00448 if (option_debug)
00449 ast_log(LOG_DEBUG, "Runt Attribute (got %zd, expecting %zd)\n", len, sizeof(struct stun_attr));
00450 break;
00451 }
00452 attr = (struct stun_attr *)data;
00453 if ((ntohs(attr->len) + sizeof(struct stun_attr)) > len) {
00454 if (option_debug)
00455 ast_log(LOG_DEBUG, "Inconsistent Attribute (length %d exceeds remaining msg len %d)\n", (int) (ntohs(attr->len) + sizeof(struct stun_attr)), (int) len);
00456 break;
00457 }
00458 if (stun_process_attr(&st, attr)) {
00459 if (option_debug)
00460 ast_log(LOG_DEBUG, "Failed to handle attribute %s (%04x)\n", stun_attr2str(ntohs(attr->attr)), ntohs(attr->attr));
00461 break;
00462 }
00463
00464 attr->attr = 0;
00465 data += ntohs(attr->len) + sizeof(struct stun_attr);
00466 len -= ntohs(attr->len) + sizeof(struct stun_attr);
00467 }
00468
00469 *data = '\0';
00470 resp = (struct stun_header *)respdata;
00471 resplen = 0;
00472 respleft = sizeof(respdata) - sizeof(struct stun_header);
00473 resp->id = hdr->id;
00474 resp->msgtype = 0;
00475 resp->msglen = 0;
00476 attr = (struct stun_attr *)resp->ies;
00477 if (!len) {
00478 switch(ntohs(hdr->msgtype)) {
00479 case STUN_BINDREQ:
00480 if (stundebug)
00481 ast_verbose("STUN Bind Request, username: %s\n",
00482 st.username ? st.username : "<none>");
00483 if (st.username)
00484 append_attr_string(&attr, STUN_USERNAME, st.username, &resplen, &respleft);
00485 append_attr_address(&attr, STUN_MAPPED_ADDRESS, src, &resplen, &respleft);
00486 resp->msglen = htons(resplen);
00487 resp->msgtype = htons(STUN_BINDRESP);
00488 stun_send(s, src, resp);
00489 ret = STUN_ACCEPT;
00490 break;
00491 default:
00492 if (stundebug)
00493 ast_verbose("Dunno what to do with STUN message %04x (%s)\n", ntohs(hdr->msgtype), stun_msg2str(ntohs(hdr->msgtype)));
00494 }
00495 }
00496 return ret;
00497 }
00498
00499
00500 static AST_LIST_HEAD_STATIC(protos, ast_rtp_protocol);
00501
00502 static void timeval2ntp(struct timeval tv, unsigned int *msw, unsigned int *lsw)
00503 {
00504 unsigned int sec, usec, frac;
00505 sec = tv.tv_sec + 2208988800u;
00506 usec = tv.tv_usec;
00507 frac = (usec << 12) + (usec << 8) - ((usec * 3650) >> 6);
00508 *msw = sec;
00509 *lsw = frac;
00510 }
00511
00512 int ast_rtp_fd(struct ast_rtp *rtp)
00513 {
00514 return rtp->s;
00515 }
00516
00517 int ast_rtcp_fd(struct ast_rtp *rtp)
00518 {
00519 if (rtp->rtcp)
00520 return rtp->rtcp->s;
00521 return -1;
00522 }
00523
00524 unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp)
00525 {
00526 unsigned int interval;
00527
00528
00529 interval = rtcpinterval;
00530 return interval;
00531 }
00532
00533
00534 void ast_rtp_set_rtptimers_onhold(struct ast_rtp *rtp)
00535 {
00536 rtp->rtptimeout = (-1) * rtp->rtptimeout;
00537 rtp->rtpholdtimeout = (-1) * rtp->rtpholdtimeout;
00538 }
00539
00540
00541 void ast_rtp_set_rtptimeout(struct ast_rtp *rtp, int timeout)
00542 {
00543 rtp->rtptimeout = timeout;
00544 }
00545
00546
00547 void ast_rtp_set_rtpholdtimeout(struct ast_rtp *rtp, int timeout)
00548 {
00549 rtp->rtpholdtimeout = timeout;
00550 }
00551
00552
00553 void ast_rtp_set_rtpkeepalive(struct ast_rtp *rtp, int period)
00554 {
00555 rtp->rtpkeepalive = period;
00556 }
00557
00558
00559 int ast_rtp_get_rtptimeout(struct ast_rtp *rtp)
00560 {
00561 if (rtp->rtptimeout < 0)
00562 return 0;
00563 return rtp->rtptimeout;
00564 }
00565
00566
00567 int ast_rtp_get_rtpholdtimeout(struct ast_rtp *rtp)
00568 {
00569 if (rtp->rtptimeout < 0)
00570 return 0;
00571 return rtp->rtpholdtimeout;
00572 }
00573
00574
00575 int ast_rtp_get_rtpkeepalive(struct ast_rtp *rtp)
00576 {
00577 return rtp->rtpkeepalive;
00578 }
00579
00580 void ast_rtp_set_data(struct ast_rtp *rtp, void *data)
00581 {
00582 rtp->data = data;
00583 }
00584
00585 void ast_rtp_set_callback(struct ast_rtp *rtp, ast_rtp_callback callback)
00586 {
00587 rtp->callback = callback;
00588 }
00589
00590 void ast_rtp_setnat(struct ast_rtp *rtp, int nat)
00591 {
00592 rtp->nat = nat;
00593 }
00594
00595 int ast_rtp_getnat(struct ast_rtp *rtp)
00596 {
00597 return ast_test_flag(rtp, FLAG_NAT_ACTIVE);
00598 }
00599
00600 void ast_rtp_setdtmf(struct ast_rtp *rtp, int dtmf)
00601 {
00602 ast_set2_flag(rtp, dtmf ? 1 : 0, FLAG_HAS_DTMF);
00603 }
00604
00605 void ast_rtp_setdtmfcompensate(struct ast_rtp *rtp, int compensate)
00606 {
00607 ast_set2_flag(rtp, compensate ? 1 : 0, FLAG_DTMF_COMPENSATE);
00608 }
00609
00610 void ast_rtp_setstun(struct ast_rtp *rtp, int stun_enable)
00611 {
00612 ast_set2_flag(rtp, stun_enable ? 1 : 0, FLAG_HAS_STUN);
00613 }
00614
00615 static struct ast_frame *send_dtmf(struct ast_rtp *rtp, enum ast_frame_type type)
00616 {
00617 if (((ast_test_flag(rtp, FLAG_DTMF_COMPENSATE) && type == AST_FRAME_DTMF_END) ||
00618 (type == AST_FRAME_DTMF_BEGIN)) && ast_tvcmp(ast_tvnow(), rtp->dtmfmute) < 0) {
00619 if (option_debug)
00620 ast_log(LOG_DEBUG, "Ignore potential DTMF echo from '%s'\n", ast_inet_ntoa(rtp->them.sin_addr));
00621 rtp->resp = 0;
00622 rtp->dtmfsamples = 0;
00623 return &ast_null_frame;
00624 }
00625 if (option_debug)
00626 ast_log(LOG_DEBUG, "Sending dtmf: %d (%c), at %s\n", rtp->resp, rtp->resp, ast_inet_ntoa(rtp->them.sin_addr));
00627 if (rtp->resp == 'X') {
00628 rtp->f.frametype = AST_FRAME_CONTROL;
00629 rtp->f.subclass = AST_CONTROL_FLASH;
00630 } else {
00631 rtp->f.frametype = type;
00632 rtp->f.subclass = rtp->resp;
00633 }
00634 rtp->f.datalen = 0;
00635 rtp->f.samples = 0;
00636 rtp->f.mallocd = 0;
00637 rtp->f.src = "RTP";
00638 return &rtp->f;
00639
00640 }
00641
00642 static inline int rtp_debug_test_addr(struct sockaddr_in *addr)
00643 {
00644 if (rtpdebug == 0)
00645 return 0;
00646 if (rtpdebugaddr.sin_addr.s_addr) {
00647 if (((ntohs(rtpdebugaddr.sin_port) != 0)
00648 && (rtpdebugaddr.sin_port != addr->sin_port))
00649 || (rtpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00650 return 0;
00651 }
00652 return 1;
00653 }
00654
00655 static inline int rtcp_debug_test_addr(struct sockaddr_in *addr)
00656 {
00657 if (rtcpdebug == 0)
00658 return 0;
00659 if (rtcpdebugaddr.sin_addr.s_addr) {
00660 if (((ntohs(rtcpdebugaddr.sin_port) != 0)
00661 && (rtcpdebugaddr.sin_port != addr->sin_port))
00662 || (rtcpdebugaddr.sin_addr.s_addr != addr->sin_addr.s_addr))
00663 return 0;
00664 }
00665 return 1;
00666 }
00667
00668
00669 static struct ast_frame *process_cisco_dtmf(struct ast_rtp *rtp, unsigned char *data, int len)
00670 {
00671 unsigned int event;
00672 char resp = 0;
00673 struct ast_frame *f = NULL;
00674 event = ntohl(*((unsigned int *)(data)));
00675 event &= 0x001F;
00676 if (option_debug > 2 || rtpdebug)
00677 ast_log(LOG_DEBUG, "Cisco DTMF Digit: %08x (len = %d)\n", event, len);
00678 if (event < 10) {
00679 resp = '0' + event;
00680 } else if (event < 11) {
00681 resp = '*';
00682 } else if (event < 12) {
00683 resp = '#';
00684 } else if (event < 16) {
00685 resp = 'A' + (event - 12);
00686 } else if (event < 17) {
00687 resp = 'X';
00688 }
00689 if (rtp->resp && (rtp->resp != resp)) {
00690 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00691 }
00692 rtp->resp = resp;
00693 rtp->dtmfcount = dtmftimeout;
00694 return f;
00695 }
00696
00697
00698
00699
00700
00701
00702
00703
00704
00705
00706
00707
00708 static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *data, int len, unsigned int seqno, unsigned int timestamp)
00709 {
00710 unsigned int event;
00711 unsigned int event_end;
00712 unsigned int samples;
00713 char resp = 0;
00714 struct ast_frame *f = NULL;
00715
00716
00717 event = ntohl(*((unsigned int *)(data)));
00718 event >>= 24;
00719 event_end = ntohl(*((unsigned int *)(data)));
00720 event_end <<= 8;
00721 event_end >>= 24;
00722 samples = ntohl(*((unsigned int *)(data)));
00723 samples &= 0xFFFF;
00724
00725
00726 if (rtpdebug || option_debug > 2)
00727 ast_log(LOG_DEBUG, "- RTP 2833 Event: %08x (len = %d)\n", event, len);
00728
00729
00730 if (event < 10) {
00731 resp = '0' + event;
00732 } else if (event < 11) {
00733 resp = '*';
00734 } else if (event < 12) {
00735 resp = '#';
00736 } else if (event < 16) {
00737 resp = 'A' + (event - 12);
00738 } else if (event < 17) {
00739 resp = 'X';
00740 }
00741
00742 if (ast_test_flag(rtp, FLAG_DTMF_COMPENSATE)) {
00743 if ((rtp->lastevent != timestamp) || (rtp->resp && rtp->resp != resp)) {
00744 rtp->resp = resp;
00745 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00746 f->len = 0;
00747 rtp->lastevent = timestamp;
00748 }
00749 } else {
00750 if ((!(rtp->resp) && (!(event_end & 0x80))) || (rtp->resp && rtp->resp != resp)) {
00751 rtp->resp = resp;
00752 f = send_dtmf(rtp, AST_FRAME_DTMF_BEGIN);
00753 } else if ((event_end & 0x80) && (rtp->lastevent != seqno) && rtp->resp) {
00754 f = send_dtmf(rtp, AST_FRAME_DTMF_END);
00755 f->len = ast_tvdiff_ms(ast_samp2tv(samples, 8000), ast_tv(0, 0));
00756 rtp->resp = 0;
00757 rtp->lastevent = seqno;
00758 }
00759 }
00760
00761 rtp->dtmfcount = dtmftimeout;
00762 rtp->dtmfsamples = samples;
00763
00764 return f;
00765 }
00766
00767
00768
00769
00770
00771
00772
00773 static struct ast_frame *process_rfc3389(struct ast_rtp *rtp, unsigned char *data, int len)
00774 {
00775 struct ast_frame *f = NULL;
00776
00777
00778
00779 if (rtpdebug)
00780 ast_log(LOG_DEBUG, "- RTP 3389 Comfort noise event: Level %d (len = %d)\n", rtp->lastrxformat, len);
00781
00782 if (!(ast_test_flag(rtp, FLAG_3389_WARNING))) {
00783 ast_log(LOG_NOTICE, "Comfort noise support incomplete in Asterisk (RFC 3389). Please turn off on client if possible. Client IP: %s\n",
00784 ast_inet_ntoa(rtp->them.sin_addr));
00785 ast_set_flag(rtp, FLAG_3389_WARNING);
00786 }
00787
00788
00789 if (!len)
00790 return NULL;
00791 if (len < 24) {
00792 rtp->f.data = rtp->rawdata + AST_FRIENDLY_OFFSET;
00793 rtp->f.datalen = len - 1;
00794 rtp->f.offset = AST_FRIENDLY_OFFSET;
00795 memcpy(rtp->f.data, data + 1, len - 1);
00796 } else {
00797 rtp->f.data = NULL;
00798 rtp->f.offset = 0;
00799 rtp->f.datalen = 0;
00800 }
00801 rtp->f.frametype = AST_FRAME_CNG;
00802 rtp->f.subclass = data[0] & 0x7f;
00803 rtp->f.datalen = len - 1;
00804 rtp->f.samples = 0;
00805 rtp->f.delivery.tv_usec = rtp->f.delivery.tv_sec = 0;
00806 f = &rtp->f;
00807 return f;
00808 }
00809
00810 static int rtpread(int *id, int fd, short events, void *cbdata)
00811 {
00812 struct ast_rtp *rtp = cbdata;
00813 struct ast_frame *f;
00814 f = ast_rtp_read(rtp);
00815 if (f) {
00816 if (rtp->callback)
00817 rtp->callback(rtp, f, rtp->data);
00818 }
00819 return 1;
00820 }
00821
00822 struct ast_frame *ast_rtcp_read(struct ast_rtp *rtp)
00823 {
00824 socklen_t len;
00825 int position, i, packetwords;
00826 int res;
00827 struct sockaddr_in sin;
00828 unsigned int rtcpdata[8192 + AST_FRIENDLY_OFFSET];
00829 unsigned int *rtcpheader;
00830 int pt;
00831 struct timeval now;
00832 unsigned int length;
00833 int rc;
00834 double rttsec;
00835 uint64_t rtt = 0;
00836 unsigned int dlsr;
00837 unsigned int lsr;
00838 unsigned int msw;
00839 unsigned int lsw;
00840 unsigned int comp;
00841 struct ast_frame *f = &ast_null_frame;
00842
00843 if (!rtp || !rtp->rtcp)
00844 return &ast_null_frame;
00845
00846 len = sizeof(sin);
00847
00848 res = recvfrom(rtp->rtcp->s, rtcpdata + AST_FRIENDLY_OFFSET, sizeof(rtcpdata) - sizeof(unsigned int) * AST_FRIENDLY_OFFSET,
00849 0, (struct sockaddr *)&sin, &len);
00850 rtcpheader = (unsigned int *)(rtcpdata + AST_FRIENDLY_OFFSET);
00851
00852 if (res < 0) {
00853 if (errno == EBADF)
00854 CRASH;
00855 if (errno != EAGAIN) {
00856 ast_log(LOG_WARNING, "RTCP Read error: %s. Hanging up.\n", strerror(errno));
00857 return NULL;
00858 }
00859 return &ast_null_frame;
00860 }
00861
00862 packetwords = res / 4;
00863
00864 if (rtp->nat) {
00865
00866 if ((rtp->rtcp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
00867 (rtp->rtcp->them.sin_port != sin.sin_port)) {
00868 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
00869 if (option_debug || rtpdebug)
00870 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));
00871 }
00872 }
00873
00874 if (option_debug)
00875 ast_log(LOG_DEBUG, "Got RTCP report of %d bytes\n", res);
00876
00877
00878 position = 0;
00879 while (position < packetwords) {
00880 i = position;
00881 length = ntohl(rtcpheader[i]);
00882 pt = (length & 0xff0000) >> 16;
00883 rc = (length & 0x1f000000) >> 24;
00884 length &= 0xffff;
00885
00886 if ((i + length) > packetwords) {
00887 ast_log(LOG_WARNING, "RTCP Read too short\n");
00888 return &ast_null_frame;
00889 }
00890
00891 if (rtcp_debug_test_addr(&sin)) {
00892 ast_verbose("\n\nGot RTCP from %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
00893 ast_verbose("PT: %d(%s)\n", pt, (pt == 200) ? "Sender Report" : (pt == 201) ? "Receiver Report" : (pt == 192) ? "H.261 FUR" : "Unknown");
00894 ast_verbose("Reception reports: %d\n", rc);
00895 ast_verbose("SSRC of sender: %u\n", rtcpheader[i + 1]);
00896 }
00897
00898 i += 2;
00899
00900 switch (pt) {
00901 case RTCP_PT_SR:
00902 gettimeofday(&rtp->rtcp->rxlsr,NULL);
00903 rtp->rtcp->spc = ntohl(rtcpheader[i+3]);
00904 rtp->rtcp->soc = ntohl(rtcpheader[i + 4]);
00905 rtp->rtcp->themrxlsr = ((ntohl(rtcpheader[i]) & 0x0000ffff) << 16) | ((ntohl(rtcpheader[i + 1]) & 0xffff0000) >> 16);
00906
00907 if (rtcp_debug_test_addr(&sin)) {
00908 ast_verbose("NTP timestamp: %lu.%010lu\n", (unsigned long) ntohl(rtcpheader[i]), (unsigned long) ntohl(rtcpheader[i + 1]) * 4096);
00909 ast_verbose("RTP timestamp: %lu\n", (unsigned long) ntohl(rtcpheader[i + 2]));
00910 ast_verbose("SPC: %lu\tSOC: %lu\n", (unsigned long) ntohl(rtcpheader[i + 3]), (unsigned long) ntohl(rtcpheader[i + 4]));
00911 }
00912 i += 5;
00913 if (rc < 1)
00914 break;
00915
00916 case RTCP_PT_RR:
00917
00918
00919 gettimeofday(&now, NULL);
00920 timeval2ntp(now, &msw, &lsw);
00921 if (ntohl(rtcpheader[i + 4]) && ntohl(rtcpheader[i + 5])) {
00922 comp = ((msw & 0xffff) << 16) | ((lsw & 0xffff0000) >> 16);
00923 lsr = ntohl(rtcpheader[i + 4]);
00924 dlsr = ntohl(rtcpheader[i + 5]);
00925 rtt = comp - lsr - dlsr;
00926
00927
00928
00929 if (rtt < 4294) {
00930 rtt = (rtt * 1000000) >> 16;
00931 } else {
00932 rtt = (rtt * 1000) >> 16;
00933 rtt *= 1000;
00934 }
00935 rtt = rtt / 1000.;
00936 rttsec = rtt / 1000.;
00937
00938 if (comp - dlsr >= lsr) {
00939 rtp->rtcp->accumulated_transit += rttsec;
00940 rtp->rtcp->rtt = rttsec;
00941 if (rtp->rtcp->maxrtt<rttsec)
00942 rtp->rtcp->maxrtt = rttsec;
00943 if (rtp->rtcp->minrtt>rttsec)
00944 rtp->rtcp->minrtt = rttsec;
00945 } else if (rtcp_debug_test_addr(&sin)) {
00946 ast_verbose("Internal RTCP NTP clock skew detected: "
00947 "lsr=%u, now=%u, dlsr=%u (%d:%03dms), "
00948 "diff=%d\n",
00949 lsr, comp, dlsr, dlsr / 65536,
00950 (dlsr % 65536) * 1000 / 65536,
00951 dlsr - (comp - lsr));
00952 }
00953 }
00954
00955 rtp->rtcp->reported_jitter = ntohl(rtcpheader[i + 3]);
00956 rtp->rtcp->reported_lost = ntohl(rtcpheader[i + 1]) & 0xffffff;
00957 if (rtcp_debug_test_addr(&sin)) {
00958 ast_verbose(" Fraction lost: %ld\n", (((long) ntohl(rtcpheader[i + 1]) & 0xff000000) >> 24));
00959 ast_verbose(" Packets lost so far: %d\n", rtp->rtcp->reported_lost);
00960 ast_verbose(" Highest sequence number: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff));
00961 ast_verbose(" Sequence number cycles: %ld\n", (long) (ntohl(rtcpheader[i + 2]) & 0xffff) >> 16);
00962 ast_verbose(" Interarrival jitter: %u\n", rtp->rtcp->reported_jitter);
00963 ast_verbose(" Last SR(our NTP): %lu.%010lu\n",(unsigned long) ntohl(rtcpheader[i + 4]) >> 16,((unsigned long) ntohl(rtcpheader[i + 4]) << 16) * 4096);
00964 ast_verbose(" DLSR: %4.4f (sec)\n",ntohl(rtcpheader[i + 5])/65536.0);
00965 if (rtt)
00966 ast_verbose(" RTT: %lu(sec)\n", (unsigned long) rtt);
00967 }
00968 break;
00969 case RTCP_PT_FUR:
00970 if (rtcp_debug_test_addr(&sin))
00971 ast_verbose("Received an RTCP Fast Update Request\n");
00972 rtp->f.frametype = AST_FRAME_CONTROL;
00973 rtp->f.subclass = AST_CONTROL_VIDUPDATE;
00974 rtp->f.datalen = 0;
00975 rtp->f.samples = 0;
00976 rtp->f.mallocd = 0;
00977 rtp->f.src = "RTP";
00978 f = &rtp->f;
00979 break;
00980 case RTCP_PT_SDES:
00981 if (rtcp_debug_test_addr(&sin))
00982 ast_verbose("Received an SDES from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00983 break;
00984 case RTCP_PT_BYE:
00985 if (rtcp_debug_test_addr(&sin))
00986 ast_verbose("Received a BYE from %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
00987 break;
00988 default:
00989 if (option_debug)
00990 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));
00991 break;
00992 }
00993 position += (length + 1);
00994 }
00995
00996 return f;
00997 }
00998
00999 static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int timestamp, int mark)
01000 {
01001 struct timeval now;
01002 double transit;
01003 double current_time;
01004 double d;
01005 double dtv;
01006 double prog;
01007
01008 if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) {
01009 gettimeofday(&rtp->rxcore, NULL);
01010 rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000;
01011
01012 rtp->seedrxts = timestamp;
01013 rtp->rxcore.tv_sec -= timestamp / 8000;
01014 rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
01015
01016 rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100;
01017 if (rtp->rxcore.tv_usec < 0) {
01018
01019 rtp->rxcore.tv_usec += 1000000;
01020 rtp->rxcore.tv_sec -= 1;
01021 }
01022 }
01023
01024 gettimeofday(&now,NULL);
01025
01026 tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000;
01027 tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125;
01028 if (tv->tv_usec >= 1000000) {
01029 tv->tv_usec -= 1000000;
01030 tv->tv_sec += 1;
01031 }
01032 prog = (double)((timestamp-rtp->seedrxts)/8000.);
01033 dtv = (double)rtp->drxcore + (double)(prog);
01034 current_time = (double)now.tv_sec + (double)now.tv_usec/1000000;
01035 transit = current_time - dtv;
01036 d = transit - rtp->rxtransit;
01037 rtp->rxtransit = transit;
01038 if (d<0)
01039 d=-d;
01040 rtp->rxjitter += (1./16.) * (d - rtp->rxjitter);
01041 if (rtp->rtcp && rtp->rxjitter > rtp->rtcp->maxrxjitter)
01042 rtp->rtcp->maxrxjitter = rtp->rxjitter;
01043 if (rtp->rtcp && rtp->rxjitter < rtp->rtcp->minrxjitter)
01044 rtp->rtcp->minrxjitter = rtp->rxjitter;
01045 }
01046
01047
01048 static int bridge_p2p_rtp_write(struct ast_rtp *rtp, struct ast_rtp *bridged, unsigned int *rtpheader, int len, int hdrlen)
01049 {
01050 int res = 0, payload = 0, bridged_payload = 0, mark;
01051 struct rtpPayloadType rtpPT;
01052 int reconstruct = ntohl(rtpheader[0]);
01053
01054
01055 payload = (reconstruct & 0x7f0000) >> 16;
01056 mark = (((reconstruct & 0x800000) >> 23) != 0);
01057
01058
01059 rtpPT = ast_rtp_lookup_pt(rtp, payload);
01060
01061
01062 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) && !rtpPT.isAstFormat && rtpPT.code == AST_RTP_DTMF)
01063 return -1;
01064
01065
01066 bridged_payload = ast_rtp_lookup_code(bridged, rtpPT.isAstFormat, rtpPT.code);
01067
01068
01069 if (!ast_test_flag(rtp, FLAG_P2P_SENT_MARK)) {
01070 mark = 1;
01071 ast_set_flag(rtp, FLAG_P2P_SENT_MARK);
01072 }
01073
01074
01075 reconstruct &= 0xFF80FFFF;
01076 reconstruct |= (bridged_payload << 16);
01077 reconstruct |= (mark << 23);
01078 rtpheader[0] = htonl(reconstruct);
01079
01080
01081 res = sendto(bridged->s, (void *)rtpheader, len, 0, (struct sockaddr *)&bridged->them, sizeof(bridged->them));
01082 if (res < 0) {
01083 if (!bridged->nat || (bridged->nat && (ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
01084 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));
01085 } else if (((ast_test_flag(bridged, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(bridged, FLAG_NAT_INACTIVE_NOWARN)) {
01086 if (option_debug || rtpdebug)
01087 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));
01088 ast_set_flag(bridged, FLAG_NAT_INACTIVE_NOWARN);
01089 }
01090 return 0;
01091 } else if (rtp_debug_test_addr(&bridged->them))
01092 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);
01093
01094 return 0;
01095 }
01096
01097 struct ast_frame *ast_rtp_read(struct ast_rtp *rtp)
01098 {
01099 int res;
01100 struct sockaddr_in sin;
01101 socklen_t len;
01102 unsigned int seqno;
01103 int version;
01104 int payloadtype;
01105 int hdrlen = 12;
01106 int padding;
01107 int mark;
01108 int ext;
01109 int cc;
01110 unsigned int ssrc;
01111 unsigned int timestamp;
01112 unsigned int *rtpheader;
01113 struct rtpPayloadType rtpPT;
01114 struct ast_rtp *bridged = NULL;
01115
01116
01117 if (rtp->sending_digit)
01118 ast_rtp_senddigit_continuation(rtp);
01119
01120 len = sizeof(sin);
01121
01122
01123 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01124 0, (struct sockaddr *)&sin, &len);
01125
01126 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01127 if (res < 0) {
01128 if (errno == EBADF)
01129 CRASH;
01130 if (errno != EAGAIN) {
01131 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01132 return NULL;
01133 }
01134 return &ast_null_frame;
01135 }
01136
01137 if (res < hdrlen) {
01138 ast_log(LOG_WARNING, "RTP Read too short\n");
01139 return &ast_null_frame;
01140 }
01141
01142
01143 seqno = ntohl(rtpheader[0]);
01144
01145
01146 version = (seqno & 0xC0000000) >> 30;
01147 if (!version) {
01148 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01149 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01150 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01151 }
01152 return &ast_null_frame;
01153 }
01154
01155 #if 0
01156
01157 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01158 return &ast_null_frame;
01159 #endif
01160
01161
01162 if (rtp->nat) {
01163 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01164 (rtp->them.sin_port != sin.sin_port)) {
01165 rtp->them = sin;
01166 if (rtp->rtcp) {
01167 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01168 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01169 }
01170 rtp->rxseqno = 0;
01171 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01172 if (option_debug || rtpdebug)
01173 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));
01174 }
01175 }
01176
01177
01178 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01179 return &ast_null_frame;
01180
01181 if (version != 2)
01182 return &ast_null_frame;
01183
01184 payloadtype = (seqno & 0x7f0000) >> 16;
01185 padding = seqno & (1 << 29);
01186 mark = seqno & (1 << 23);
01187 ext = seqno & (1 << 28);
01188 cc = (seqno & 0xF000000) >> 24;
01189 seqno &= 0xffff;
01190 timestamp = ntohl(rtpheader[1]);
01191 ssrc = ntohl(rtpheader[2]);
01192
01193 if (!mark && rtp->rxssrc && rtp->rxssrc != ssrc) {
01194 if (option_debug || rtpdebug)
01195 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01196 mark = 1;
01197 }
01198
01199 rtp->rxssrc = ssrc;
01200
01201 if (padding) {
01202
01203 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01204 }
01205
01206 if (cc) {
01207
01208 hdrlen += cc*4;
01209 }
01210
01211 if (ext) {
01212
01213 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01214 hdrlen += 4;
01215 }
01216
01217 if (res < hdrlen) {
01218 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01219 return &ast_null_frame;
01220 }
01221
01222 rtp->rxcount++;
01223
01224 if (rtp->rxcount==1) {
01225
01226 rtp->seedrxseqno = seqno;
01227 }
01228
01229
01230 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01231
01232 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01233 }
01234 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01235 rtp->cycles += RTP_SEQ_MOD;
01236
01237 rtp->lastrxseqno = seqno;
01238
01239 if (rtp->themssrc==0)
01240 rtp->themssrc = ntohl(rtpheader[2]);
01241
01242 if (rtp_debug_test_addr(&sin))
01243 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01244 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01245
01246 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01247 if (!rtpPT.isAstFormat) {
01248 struct ast_frame *f = NULL;
01249
01250
01251 if (rtpPT.code == AST_RTP_DTMF) {
01252
01253 if (rtp_debug_test_addr(&sin)) {
01254 unsigned char *data;
01255 unsigned int event;
01256 unsigned int event_end;
01257 unsigned int duration;
01258 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01259 event = ntohl(*((unsigned int *)(data)));
01260 event >>= 24;
01261 event_end = ntohl(*((unsigned int *)(data)));
01262 event_end <<= 8;
01263 event_end >>= 24;
01264 duration = ntohl(*((unsigned int *)(data)));
01265 duration &= 0xFFFF;
01266 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);
01267 }
01268 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01269 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01270
01271 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01272 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01273 rtp->lastevent = seqno;
01274 }
01275 } else if (rtpPT.code == AST_RTP_CN) {
01276
01277 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01278 } else {
01279 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01280 }
01281 return f ? f : &ast_null_frame;
01282 }
01283 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01284 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01285
01286 if (!rtp->lastrxts)
01287 rtp->lastrxts = timestamp;
01288
01289 rtp->rxseqno = seqno;
01290
01291
01292 rtp->lastrxts = timestamp;
01293
01294 rtp->f.mallocd = 0;
01295 rtp->f.datalen = res - hdrlen;
01296 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01297 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01298 rtp->f.seqno = seqno;
01299 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01300 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01301 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01302 ast_frame_byteswap_be(&rtp->f);
01303 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01304
01305 rtp->f.has_timing_info = 1;
01306 rtp->f.ts = timestamp / 8;
01307 rtp->f.len = rtp->f.samples / 8;
01308 } else {
01309
01310 if (!rtp->lastividtimestamp)
01311 rtp->lastividtimestamp = timestamp;
01312 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01313 rtp->lastividtimestamp = timestamp;
01314 rtp->f.delivery.tv_sec = 0;
01315 rtp->f.delivery.tv_usec = 0;
01316 if (mark)
01317 rtp->f.subclass |= 0x1;
01318
01319 }
01320 rtp->f.src = "RTP";
01321 return &rtp->f;
01322 }
01323
01324
01325
01326 static struct {
01327 struct rtpPayloadType payloadType;
01328 char* type;
01329 char* subtype;
01330 } mimeTypes[] = {
01331 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01332 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01333 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01334 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01335 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01336 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01337 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01338 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01339 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01340 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01341 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01342 {{1, AST_FORMAT_G722}, "audio", "G722"},
01343 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01344 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01345 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01346 {{0, AST_RTP_CN}, "audio", "CN"},
01347 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01348 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01349 {{1, AST_FORMAT_H261}, "video", "H261"},
01350 {{1, AST_FORMAT_H263}, "video", "H263"},
01351 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01352 {{1, AST_FORMAT_H264}, "video", "H264"},
01353 };
01354
01355
01356
01357
01358 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01359 [0] = {1, AST_FORMAT_ULAW},
01360 #ifdef USE_DEPRECATED_G726
01361 [2] = {1, AST_FORMAT_G726},
01362 #endif
01363 [3] = {1, AST_FORMAT_GSM},
01364 [4] = {1, AST_FORMAT_G723_1},
01365 [5] = {1, AST_FORMAT_ADPCM},
01366 [6] = {1, AST_FORMAT_ADPCM},
01367 [7] = {1, AST_FORMAT_LPC10},
01368 [8] = {1, AST_FORMAT_ALAW},
01369 [9] = {1, AST_FORMAT_G722},
01370 [10] = {1, AST_FORMAT_SLINEAR},
01371 [11] = {1, AST_FORMAT_SLINEAR},
01372 [13] = {0, AST_RTP_CN},
01373 [16] = {1, AST_FORMAT_ADPCM},
01374 [17] = {1, AST_FORMAT_ADPCM},
01375 [18] = {1, AST_FORMAT_G729A},
01376 [19] = {0, AST_RTP_CN},
01377 [26] = {1, AST_FORMAT_JPEG},
01378 [31] = {1, AST_FORMAT_H261},
01379 [34] = {1, AST_FORMAT_H263},
01380 [103] = {1, AST_FORMAT_H263_PLUS},
01381 [97] = {1, AST_FORMAT_ILBC},
01382 [99] = {1, AST_FORMAT_H264},
01383 [101] = {0, AST_RTP_DTMF},
01384 [110] = {1, AST_FORMAT_SPEEX},
01385 [111] = {1, AST_FORMAT_G726},
01386 [112] = {1, AST_FORMAT_G726_AAL2},
01387 [121] = {0, AST_RTP_CISCO_DTMF},
01388 };
01389
01390 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01391 {
01392 int i;
01393
01394 if (!rtp)
01395 return;
01396
01397 ast_mutex_lock(&rtp->bridge_lock);
01398
01399 for (i = 0; i < MAX_RTP_PT; ++i) {
01400 rtp->current_RTP_PT[i].isAstFormat = 0;
01401 rtp->current_RTP_PT[i].code = 0;
01402 }
01403
01404 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01405 rtp->rtp_lookup_code_cache_code = 0;
01406 rtp->rtp_lookup_code_cache_result = 0;
01407
01408 ast_mutex_unlock(&rtp->bridge_lock);
01409 }
01410
01411 void ast_rtp_pt_default(struct ast_rtp* rtp)
01412 {
01413 int i;
01414
01415 ast_mutex_lock(&rtp->bridge_lock);
01416
01417
01418 for (i = 0; i < MAX_RTP_PT; ++i) {
01419 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01420 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01421 }
01422
01423 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01424 rtp->rtp_lookup_code_cache_code = 0;
01425 rtp->rtp_lookup_code_cache_result = 0;
01426
01427 ast_mutex_unlock(&rtp->bridge_lock);
01428 }
01429
01430 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01431 {
01432 unsigned int i;
01433
01434 ast_mutex_lock(&dest->bridge_lock);
01435 ast_mutex_lock(&src->bridge_lock);
01436
01437 for (i=0; i < MAX_RTP_PT; ++i) {
01438 dest->current_RTP_PT[i].isAstFormat =
01439 src->current_RTP_PT[i].isAstFormat;
01440 dest->current_RTP_PT[i].code =
01441 src->current_RTP_PT[i].code;
01442 }
01443 dest->rtp_lookup_code_cache_isAstFormat = 0;
01444 dest->rtp_lookup_code_cache_code = 0;
01445 dest->rtp_lookup_code_cache_result = 0;
01446
01447 ast_mutex_unlock(&src->bridge_lock);
01448 ast_mutex_unlock(&dest->bridge_lock);
01449 }
01450
01451
01452 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01453 {
01454 struct ast_rtp_protocol *cur = NULL;
01455
01456 AST_LIST_LOCK(&protos);
01457 AST_LIST_TRAVERSE(&protos, cur, list) {
01458 if (cur->type == chan->tech->type)
01459 break;
01460 }
01461 AST_LIST_UNLOCK(&protos);
01462
01463 return cur;
01464 }
01465
01466 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01467 {
01468 struct ast_rtp *destp = NULL, *srcp = NULL;
01469 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01470 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01471 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01472 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01473 int srccodec, destcodec, nat_active = 0;
01474
01475
01476 ast_channel_lock(dest);
01477 if (src) {
01478 while(ast_channel_trylock(src)) {
01479 ast_channel_unlock(dest);
01480 usleep(1);
01481 ast_channel_lock(dest);
01482 }
01483 }
01484
01485
01486 destpr = get_proto(dest);
01487 if (src)
01488 srcpr = get_proto(src);
01489 if (!destpr) {
01490 if (option_debug)
01491 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01492 ast_channel_unlock(dest);
01493 if (src)
01494 ast_channel_unlock(src);
01495 return 0;
01496 }
01497 if (!srcpr) {
01498 if (option_debug)
01499 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01500 ast_channel_unlock(dest);
01501 if (src)
01502 ast_channel_unlock(src);
01503 return 0;
01504 }
01505
01506
01507 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01508 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01509 if (srcpr) {
01510 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01511 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01512 }
01513
01514
01515 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01516
01517 ast_channel_unlock(dest);
01518 if (src)
01519 ast_channel_unlock(src);
01520 return 0;
01521 }
01522 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01523 srccodec = srcpr->get_codec(src);
01524 else
01525 srccodec = 0;
01526 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01527 destcodec = destpr->get_codec(dest);
01528 else
01529 destcodec = 0;
01530
01531 if (!(srccodec & destcodec)) {
01532 ast_channel_unlock(dest);
01533 if (src)
01534 ast_channel_unlock(src);
01535 return 0;
01536 }
01537
01538 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01539 srcp = NULL;
01540
01541 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01542 nat_active = 1;
01543
01544 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01545 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01546 ast_channel_unlock(dest);
01547 if (src)
01548 ast_channel_unlock(src);
01549 if (option_debug)
01550 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01551 return 1;
01552 }
01553
01554 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01555 {
01556 struct ast_rtp *destp = NULL, *srcp = NULL;
01557 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01558 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01559 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01560 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01561 int srccodec, destcodec;
01562
01563
01564 ast_channel_lock(dest);
01565 while(ast_channel_trylock(src)) {
01566 ast_channel_unlock(dest);
01567 usleep(1);
01568 ast_channel_lock(dest);
01569 }
01570
01571
01572 if (!(destpr = get_proto(dest))) {
01573 if (option_debug)
01574 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01575 ast_channel_unlock(dest);
01576 ast_channel_unlock(src);
01577 return 0;
01578 }
01579 if (!(srcpr = get_proto(src))) {
01580 if (option_debug)
01581 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01582 ast_channel_unlock(dest);
01583 ast_channel_unlock(src);
01584 return 0;
01585 }
01586
01587
01588 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01589 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01590 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01591 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01592
01593
01594 if (srcpr->get_codec)
01595 srccodec = srcpr->get_codec(src);
01596 else
01597 srccodec = 0;
01598 if (destpr->get_codec)
01599 destcodec = destpr->get_codec(dest);
01600 else
01601 destcodec = 0;
01602
01603
01604 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01605
01606 ast_channel_unlock(dest);
01607 ast_channel_unlock(src);
01608 return 0;
01609 }
01610 ast_rtp_pt_copy(destp, srcp);
01611 if (vdestp && vsrcp)
01612 ast_rtp_pt_copy(vdestp, vsrcp);
01613 if (media) {
01614
01615 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01616 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01617 }
01618 ast_channel_unlock(dest);
01619 ast_channel_unlock(src);
01620 if (option_debug)
01621 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01622 return 1;
01623 }
01624
01625
01626
01627
01628
01629 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01630 {
01631 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01632 return;
01633
01634 ast_mutex_lock(&rtp->bridge_lock);
01635 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01636 ast_mutex_unlock(&rtp->bridge_lock);
01637 }
01638
01639
01640
01641
01642 void ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01643 char *mimeType, char *mimeSubtype,
01644 enum ast_rtp_options options)
01645 {
01646 unsigned int i;
01647
01648 if (pt < 0 || pt > MAX_RTP_PT)
01649 return;
01650
01651 ast_mutex_lock(&rtp->bridge_lock);
01652
01653 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01654 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01655 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01656 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01657 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01658 mimeTypes[i].payloadType.isAstFormat &&
01659 (options & AST_RTP_OPT_G726_NONSTANDARD))
01660 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01661 break;
01662 }
01663 }
01664
01665 ast_mutex_unlock(&rtp->bridge_lock);
01666
01667 return;
01668 }
01669
01670
01671
01672 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01673 int* astFormats, int* nonAstFormats)
01674 {
01675 int pt;
01676
01677 ast_mutex_lock(&rtp->bridge_lock);
01678
01679 *astFormats = *nonAstFormats = 0;
01680 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01681 if (rtp->current_RTP_PT[pt].isAstFormat) {
01682 *astFormats |= rtp->current_RTP_PT[pt].code;
01683 } else {
01684 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01685 }
01686 }
01687
01688 ast_mutex_unlock(&rtp->bridge_lock);
01689
01690 return;
01691 }
01692
01693 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01694 {
01695 struct rtpPayloadType result;
01696
01697 result.isAstFormat = result.code = 0;
01698
01699 if (pt < 0 || pt > MAX_RTP_PT)
01700 return result;
01701
01702
01703 ast_mutex_lock(&rtp->bridge_lock);
01704 result = rtp->current_RTP_PT[pt];
01705 ast_mutex_unlock(&rtp->bridge_lock);
01706
01707
01708 if (!result.code)
01709 result = static_RTP_PT[pt];
01710
01711 return result;
01712 }
01713
01714
01715 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01716 {
01717 int pt = 0;
01718
01719 ast_mutex_lock(&rtp->bridge_lock);
01720
01721 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01722 code == rtp->rtp_lookup_code_cache_code) {
01723
01724 pt = rtp->rtp_lookup_code_cache_result;
01725 ast_mutex_unlock(&rtp->bridge_lock);
01726 return pt;
01727 }
01728
01729
01730 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01731 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01732 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01733 rtp->rtp_lookup_code_cache_code = code;
01734 rtp->rtp_lookup_code_cache_result = pt;
01735 ast_mutex_unlock(&rtp->bridge_lock);
01736 return pt;
01737 }
01738 }
01739
01740
01741 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01742 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01743 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01744 rtp->rtp_lookup_code_cache_code = code;
01745 rtp->rtp_lookup_code_cache_result = pt;
01746 ast_mutex_unlock(&rtp->bridge_lock);
01747 return pt;
01748 }
01749 }
01750
01751 ast_mutex_unlock(&rtp->bridge_lock);
01752
01753 return -1;
01754 }
01755
01756 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01757 enum ast_rtp_options options)
01758 {
01759 unsigned int i;
01760
01761 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01762 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01763 if (isAstFormat &&
01764 (code == AST_FORMAT_G726_AAL2) &&
01765 (options & AST_RTP_OPT_G726_NONSTANDARD))
01766 return "G726-32";
01767 else
01768 return mimeTypes[i].subtype;
01769 }
01770 }
01771
01772 return "";
01773 }
01774
01775 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01776 const int isAstFormat, enum ast_rtp_options options)
01777 {
01778 int format;
01779 unsigned len;
01780 char *end = buf;
01781 char *start = buf;
01782
01783 if (!buf || !size)
01784 return NULL;
01785
01786 snprintf(end, size, "0x%x (", capability);
01787
01788 len = strlen(end);
01789 end += len;
01790 size -= len;
01791 start = end;
01792
01793 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01794 if (capability & format) {
01795 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01796
01797 snprintf(end, size, "%s|", name);
01798 len = strlen(end);
01799 end += len;
01800 size -= len;
01801 }
01802 }
01803
01804 if (start == end)
01805 snprintf(start, size, "nothing)");
01806 else if (size > 1)
01807 *(end -1) = ')';
01808
01809 return buf;
01810 }
01811
01812 static int rtp_socket(void)
01813 {
01814 int s;
01815 long flags;
01816 s = socket(AF_INET, SOCK_DGRAM, 0);
01817 if (s > -1) {
01818 flags = fcntl(s, F_GETFL);
01819 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01820 #ifdef SO_NO_CHECK
01821 if (nochecksums)
01822 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01823 #endif
01824 }
01825 return s;
01826 }
01827
01828
01829
01830
01831
01832
01833 static struct ast_rtcp *ast_rtcp_new(void)
01834 {
01835 struct ast_rtcp *rtcp;
01836
01837 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01838 return NULL;
01839 rtcp->s = rtp_socket();
01840 rtcp->us.sin_family = AF_INET;
01841 rtcp->them.sin_family = AF_INET;
01842
01843 if (rtcp->s < 0) {
01844 free(rtcp);
01845 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01846 return NULL;
01847 }
01848
01849 return rtcp;
01850 }
01851
01852
01853
01854
01855
01856 void ast_rtp_new_init(struct ast_rtp *rtp)
01857 {
01858 ast_mutex_init(&rtp->bridge_lock);
01859
01860 rtp->them.sin_family = AF_INET;
01861 rtp->us.sin_family = AF_INET;
01862 rtp->ssrc = ast_random();
01863 rtp->seqno = ast_random() & 0xffff;
01864 ast_set_flag(rtp, FLAG_HAS_DTMF);
01865
01866 return;
01867 }
01868
01869 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01870 {
01871 struct ast_rtp *rtp;
01872 int x;
01873 int first;
01874 int startplace;
01875
01876 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01877 return NULL;
01878
01879 ast_rtp_new_init(rtp);
01880
01881 rtp->s = rtp_socket();
01882 if (rtp->s < 0) {
01883 free(rtp);
01884 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01885 return NULL;
01886 }
01887 if (sched && rtcpenable) {
01888 rtp->sched = sched;
01889 rtp->rtcp = ast_rtcp_new();
01890 }
01891
01892
01893 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01894 x = x & ~1;
01895
01896 startplace = x;
01897
01898 for (;;) {
01899
01900 rtp->us.sin_port = htons(x);
01901 rtp->us.sin_addr = addr;
01902
01903 if (rtp->rtcp) {
01904 rtp->rtcp->us.sin_port = htons(x + 1);
01905 rtp->rtcp->us.sin_addr = addr;
01906 }
01907
01908 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01909 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01910 break;
01911 if (!first) {
01912
01913 close(rtp->s);
01914 rtp->s = rtp_socket();
01915 }
01916 if (errno != EADDRINUSE) {
01917
01918 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01919 close(rtp->s);
01920 if (rtp->rtcp) {
01921 close(rtp->rtcp->s);
01922 free(rtp->rtcp);
01923 }
01924 free(rtp);
01925 return NULL;
01926 }
01927
01928 x += 2;
01929
01930 if (x > rtpend)
01931
01932 x = (rtpstart + 1) & ~1;
01933
01934 if (x == startplace) {
01935
01936 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01937 close(rtp->s);
01938 if (rtp->rtcp) {
01939 close(rtp->rtcp->s);
01940 free(rtp->rtcp);
01941 }
01942 free(rtp);
01943 return NULL;
01944 }
01945 }
01946 rtp->sched = sched;
01947 rtp->io = io;
01948 if (callbackmode) {
01949 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01950 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01951 }
01952 ast_rtp_pt_default(rtp);
01953 return rtp;
01954 }
01955
01956 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01957 {
01958 struct in_addr ia;
01959
01960 memset(&ia, 0, sizeof(ia));
01961 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
01962 }
01963
01964 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
01965 {
01966 int res;
01967
01968 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
01969 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
01970 return res;
01971 }
01972
01973 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
01974 {
01975 rtp->them.sin_port = them->sin_port;
01976 rtp->them.sin_addr = them->sin_addr;
01977 if (rtp->rtcp) {
01978 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
01979 rtp->rtcp->them.sin_addr = them->sin_addr;
01980 }
01981 rtp->rxseqno = 0;
01982 }
01983
01984 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
01985 {
01986 if ((them->sin_family != AF_INET) ||
01987 (them->sin_port != rtp->them.sin_port) ||
01988 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
01989 them->sin_family = AF_INET;
01990 them->sin_port = rtp->them.sin_port;
01991 them->sin_addr = rtp->them.sin_addr;
01992 return 1;
01993 }
01994 return 0;
01995 }
01996
01997 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
01998 {
01999 *us = rtp->us;
02000 }
02001
02002 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02003 {
02004 struct ast_rtp *bridged = NULL;
02005
02006 ast_mutex_lock(&rtp->bridge_lock);
02007 bridged = rtp->bridged;
02008 ast_mutex_unlock(&rtp->bridge_lock);
02009
02010 return bridged;
02011 }
02012
02013 void ast_rtp_stop(struct ast_rtp *rtp)
02014 {
02015 if (rtp->rtcp && rtp->rtcp->schedid > 0) {
02016 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02017 rtp->rtcp->schedid = -1;
02018 }
02019
02020 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02021 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02022 if (rtp->rtcp) {
02023 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02024 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02025 }
02026
02027 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02028 }
02029
02030 void ast_rtp_reset(struct ast_rtp *rtp)
02031 {
02032 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02033 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02034 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02035 rtp->lastts = 0;
02036 rtp->lastdigitts = 0;
02037 rtp->lastrxts = 0;
02038 rtp->lastividtimestamp = 0;
02039 rtp->lastovidtimestamp = 0;
02040 rtp->lasteventseqn = 0;
02041 rtp->lastevent = 0;
02042 rtp->lasttxformat = 0;
02043 rtp->lastrxformat = 0;
02044 rtp->dtmfcount = 0;
02045 rtp->dtmfsamples = 0;
02046 rtp->seqno = 0;
02047 rtp->rxseqno = 0;
02048 }
02049
02050 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02051 {
02052
02053
02054
02055
02056
02057
02058
02059
02060
02061
02062
02063
02064 if (qual) {
02065 qual->local_ssrc = rtp->ssrc;
02066 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02067 qual->local_jitter = rtp->rxjitter;
02068 qual->local_count = rtp->rxcount;
02069 qual->remote_ssrc = rtp->themssrc;
02070 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02071 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02072 qual->remote_count = rtp->txcount;
02073 qual->rtt = rtp->rtcp->rtt;
02074 }
02075 snprintf(rtp->rtcp->quality, sizeof(rtp->rtcp->quality), "ssrc=%u;themssrc=%u;lp=%u;rxjitter=%f;rxcount=%u;txjitter=%f;txcount=%u;rlp=%u;rtt=%f", rtp->ssrc, rtp->themssrc, rtp->rtcp->expected_prior - rtp->rtcp->received_prior, rtp->rxjitter, rtp->rxcount, (double)rtp->rtcp->reported_jitter/65536., rtp->txcount, rtp->rtcp->reported_lost, rtp->rtcp->rtt);
02076
02077 return rtp->rtcp->quality;
02078 }
02079
02080 void ast_rtp_destroy(struct ast_rtp *rtp)
02081 {
02082 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02083
02084 ast_verbose(" RTP-stats\n");
02085 ast_verbose("* Our Receiver:\n");
02086 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02087 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02088 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02089 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02090 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02091 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02092 ast_verbose("* Our Sender:\n");
02093 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02094 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02095 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02096 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter);
02097 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02098 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02099 }
02100
02101 if (rtp->smoother)
02102 ast_smoother_free(rtp->smoother);
02103 if (rtp->ioid)
02104 ast_io_remove(rtp->io, rtp->ioid);
02105 if (rtp->s > -1)
02106 close(rtp->s);
02107 if (rtp->rtcp) {
02108 if (rtp->rtcp->schedid > 0)
02109 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02110 close(rtp->rtcp->s);
02111 free(rtp->rtcp);
02112 rtp->rtcp=NULL;
02113 }
02114
02115 ast_mutex_destroy(&rtp->bridge_lock);
02116
02117 free(rtp);
02118 }
02119
02120 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02121 {
02122 struct timeval t;
02123 long ms;
02124 if (ast_tvzero(rtp->txcore)) {
02125 rtp->txcore = ast_tvnow();
02126
02127 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02128 }
02129
02130 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02131 ms = ast_tvdiff_ms(t, rtp->txcore);
02132 if (ms < 0)
02133 ms = 0;
02134
02135 rtp->txcore = t;
02136 return (unsigned int) ms;
02137 }
02138
02139
02140 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02141 {
02142 unsigned int *rtpheader;
02143 int hdrlen = 12, res = 0, i = 0, payload = 0;
02144 char data[256];
02145
02146 if ((digit <= '9') && (digit >= '0'))
02147 digit -= '0';
02148 else if (digit == '*')
02149 digit = 10;
02150 else if (digit == '#')
02151 digit = 11;
02152 else if ((digit >= 'A') && (digit <= 'D'))
02153 digit = digit - 'A' + 12;
02154 else if ((digit >= 'a') && (digit <= 'd'))
02155 digit = digit - 'a' + 12;
02156 else {
02157 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02158 return 0;
02159 }
02160
02161
02162 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02163 return 0;
02164
02165 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02166
02167 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02168 rtp->send_duration = 160;
02169
02170
02171 rtpheader = (unsigned int *)data;
02172 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02173 rtpheader[1] = htonl(rtp->lastdigitts);
02174 rtpheader[2] = htonl(rtp->ssrc);
02175
02176 for (i = 0; i < 2; i++) {
02177 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02178 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02179 if (res < 0)
02180 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02181 ast_inet_ntoa(rtp->them.sin_addr),
02182 ntohs(rtp->them.sin_port), strerror(errno));
02183 if (rtp_debug_test_addr(&rtp->them))
02184 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02185 ast_inet_ntoa(rtp->them.sin_addr),
02186 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02187
02188 rtp->seqno++;
02189
02190 rtp->send_duration += 160;
02191
02192 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02193 }
02194
02195
02196 rtp->sending_digit = 1;
02197 rtp->send_digit = digit;
02198 rtp->send_payload = payload;
02199
02200 return 0;
02201 }
02202
02203
02204 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02205 {
02206 unsigned int *rtpheader;
02207 int hdrlen = 12, res = 0;
02208 char data[256];
02209
02210 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02211 return 0;
02212
02213
02214 rtpheader = (unsigned int *)data;
02215 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02216 rtpheader[1] = htonl(rtp->lastdigitts);
02217 rtpheader[2] = htonl(rtp->ssrc);
02218 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02219 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02220
02221
02222 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02223 if (res < 0)
02224 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02225 ast_inet_ntoa(rtp->them.sin_addr),
02226 ntohs(rtp->them.sin_port), strerror(errno));
02227 if (rtp_debug_test_addr(&rtp->them))
02228 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02229 ast_inet_ntoa(rtp->them.sin_addr),
02230 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02231
02232
02233 rtp->seqno++;
02234
02235 rtp->send_duration += 160;
02236
02237 return 0;
02238 }
02239
02240
02241 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02242 {
02243 unsigned int *rtpheader;
02244 int hdrlen = 12, res = 0, i = 0;
02245 char data[256];
02246
02247
02248 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02249 return 0;
02250
02251 if ((digit <= '9') && (digit >= '0'))
02252 digit -= '0';
02253 else if (digit == '*')
02254 digit = 10;
02255 else if (digit == '#')
02256 digit = 11;
02257 else if ((digit >= 'A') && (digit <= 'D'))
02258 digit = digit - 'A' + 12;
02259 else if ((digit >= 'a') && (digit <= 'd'))
02260 digit = digit - 'a' + 12;
02261 else {
02262 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02263 return 0;
02264 }
02265
02266 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02267
02268 rtpheader = (unsigned int *)data;
02269 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02270 rtpheader[1] = htonl(rtp->lastdigitts);
02271 rtpheader[2] = htonl(rtp->ssrc);
02272 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02273
02274 rtpheader[3] |= htonl((1 << 23));
02275 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02276
02277 for (i = 0; i < 3; i++) {
02278 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02279 if (res < 0)
02280 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02281 ast_inet_ntoa(rtp->them.sin_addr),
02282 ntohs(rtp->them.sin_port), strerror(errno));
02283 if (rtp_debug_test_addr(&rtp->them))
02284 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02285 ast_inet_ntoa(rtp->them.sin_addr),
02286 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02287 }
02288 rtp->sending_digit = 0;
02289 rtp->send_digit = 0;
02290
02291 rtp->lastdigitts += 960;
02292 rtp->seqno++;
02293
02294 return res;
02295 }
02296
02297
02298 int ast_rtcp_send_h261fur(void *data)
02299 {
02300 struct ast_rtp *rtp = data;
02301 int res;
02302
02303 rtp->rtcp->sendfur = 1;
02304 res = ast_rtcp_write(data);
02305
02306 return res;
02307 }
02308
02309
02310 static int ast_rtcp_write_sr(void *data)
02311 {
02312 struct ast_rtp *rtp = data;
02313 int res;
02314 int len = 0;
02315 struct timeval now;
02316 unsigned int now_lsw;
02317 unsigned int now_msw;
02318 unsigned int *rtcpheader;
02319 unsigned int lost;
02320 unsigned int extended;
02321 unsigned int expected;
02322 unsigned int expected_interval;
02323 unsigned int received_interval;
02324 int lost_interval;
02325 int fraction;
02326 struct timeval dlsr;
02327 char bdata[512];
02328
02329
02330 if (!rtp || !rtp->rtcp)
02331 return 0;
02332
02333 if (!rtp->rtcp->them.sin_addr.s_addr) {
02334 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02335 if (rtp->rtcp->schedid > 0)
02336 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02337 rtp->rtcp->schedid = -1;
02338 return 0;
02339 }
02340
02341 gettimeofday(&now, NULL);
02342 timeval2ntp(now, &now_msw, &now_lsw);
02343 rtcpheader = (unsigned int *)bdata;
02344 rtcpheader[1] = htonl(rtp->ssrc);
02345 rtcpheader[2] = htonl(now_msw);
02346 rtcpheader[3] = htonl(now_lsw);
02347 rtcpheader[4] = htonl(rtp->lastts);
02348 rtcpheader[5] = htonl(rtp->txcount);
02349 rtcpheader[6] = htonl(rtp->txoctetcount);
02350 len += 28;
02351
02352 extended = rtp->cycles + rtp->lastrxseqno;
02353 expected = extended - rtp->seedrxseqno + 1;
02354 if (rtp->rxcount > expected)
02355 expected += rtp->rxcount - expected;
02356 lost = expected - rtp->rxcount;
02357 expected_interval = expected - rtp->rtcp->expected_prior;
02358 rtp->rtcp->expected_prior = expected;
02359 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02360 rtp->rtcp->received_prior = rtp->rxcount;
02361 lost_interval = expected_interval - received_interval;
02362 if (expected_interval == 0 || lost_interval <= 0)
02363 fraction = 0;
02364 else
02365 fraction = (lost_interval << 8) / expected_interval;
02366 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02367 rtcpheader[7] = htonl(rtp->themssrc);
02368 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02369 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02370 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02371 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02372 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02373 len += 24;
02374
02375 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02376
02377 if (rtp->rtcp->sendfur) {
02378 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02379 rtcpheader[14] = htonl(rtp->ssrc);
02380 len += 8;
02381 rtp->rtcp->sendfur = 0;
02382 }
02383
02384
02385
02386 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02387 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02388 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02389 len += 12;
02390
02391 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02392 if (res < 0) {
02393 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));
02394 if (rtp->rtcp->schedid > 0)
02395 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02396 rtp->rtcp->schedid = -1;
02397 return 0;
02398 }
02399
02400
02401 gettimeofday(&rtp->rtcp->txlsr, NULL);
02402 rtp->rtcp->sr_count++;
02403
02404 rtp->rtcp->lastsrtxcount = rtp->txcount;
02405
02406 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02407 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02408 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02409 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02410 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02411 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02412 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02413 ast_verbose(" Report block:\n");
02414 ast_verbose(" Fraction lost: %u\n", fraction);
02415 ast_verbose(" Cumulative loss: %u\n", lost);
02416 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02417 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02418 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02419 }
02420 return res;
02421 }
02422
02423
02424 static int ast_rtcp_write_rr(void *data)
02425 {
02426 struct ast_rtp *rtp = data;
02427 int res;
02428 int len = 32;
02429 unsigned int lost;
02430 unsigned int extended;
02431 unsigned int expected;
02432 unsigned int expected_interval;
02433 unsigned int received_interval;
02434 int lost_interval;
02435 struct timeval now;
02436 unsigned int *rtcpheader;
02437 char bdata[1024];
02438 struct timeval dlsr;
02439 int fraction;
02440
02441 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02442 return 0;
02443
02444 if (!rtp->rtcp->them.sin_addr.s_addr) {
02445 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02446 if (rtp->rtcp->schedid > 0)
02447 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02448 rtp->rtcp->schedid = -1;
02449 return 0;
02450 }
02451
02452 extended = rtp->cycles + rtp->lastrxseqno;
02453 expected = extended - rtp->seedrxseqno + 1;
02454 lost = expected - rtp->rxcount;
02455 expected_interval = expected - rtp->rtcp->expected_prior;
02456 rtp->rtcp->expected_prior = expected;
02457 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02458 rtp->rtcp->received_prior = rtp->rxcount;
02459 lost_interval = expected_interval - received_interval;
02460 if (expected_interval == 0 || lost_interval <= 0)
02461 fraction = 0;
02462 else
02463 fraction = (lost_interval << 8) / expected_interval;
02464 gettimeofday(&now, NULL);
02465 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02466 rtcpheader = (unsigned int *)bdata;
02467 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02468 rtcpheader[1] = htonl(rtp->ssrc);
02469 rtcpheader[2] = htonl(rtp->themssrc);
02470 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02471 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02472 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02473 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02474 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02475
02476 if (rtp->rtcp->sendfur) {
02477 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02478 rtcpheader[9] = htonl(rtp->ssrc);
02479 len += 8;
02480 rtp->rtcp->sendfur = 0;
02481 }
02482
02483
02484
02485 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02486 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02487 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02488 len += 12;
02489
02490 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02491
02492 if (res < 0) {
02493 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02494
02495 if (rtp->rtcp->schedid > 0)
02496 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02497 rtp->rtcp->schedid = -1;
02498 return 0;
02499 }
02500
02501 rtp->rtcp->rr_count++;
02502
02503 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02504 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02505 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02506 " IA jitter: %.4f\n"
02507 " Their last SR: %u\n"
02508 " DLSR: %4.4f (sec)\n\n",
02509 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02510 ntohs(rtp->rtcp->them.sin_port),
02511 rtp->ssrc, rtp->themssrc, fraction, lost,
02512 rtp->rxjitter,
02513 rtp->rtcp->themrxlsr,
02514 (double)(ntohl(rtcpheader[7])/65536.0));
02515 }
02516
02517 return res;
02518 }
02519
02520
02521
02522
02523 static int ast_rtcp_write(void *data)
02524 {
02525 struct ast_rtp *rtp = data;
02526 int res;
02527
02528 if (!rtp || !rtp->rtcp)
02529 return 0;
02530
02531 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02532 res = ast_rtcp_write_sr(data);
02533 else
02534 res = ast_rtcp_write_rr(data);
02535
02536 return res;
02537 }
02538
02539
02540 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02541 {
02542 unsigned int *rtpheader;
02543 int hdrlen = 12;
02544 int res;
02545 int payload;
02546 char data[256];
02547 level = 127 - (level & 0x7f);
02548 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02549
02550
02551 if (!rtp->them.sin_addr.s_addr)
02552 return 0;
02553
02554 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02555
02556
02557 rtpheader = (unsigned int *)data;
02558 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02559 rtpheader[1] = htonl(rtp->lastts);
02560 rtpheader[2] = htonl(rtp->ssrc);
02561 data[12] = level;
02562 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02563 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02564 if (res <0)
02565 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));
02566 if (rtp_debug_test_addr(&rtp->them))
02567 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02568 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02569
02570 }
02571 return 0;
02572 }
02573
02574 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02575 {
02576 unsigned char *rtpheader;
02577 int hdrlen = 12;
02578 int res;
02579 unsigned int ms;
02580 int pred;
02581 int mark = 0;
02582
02583 ms = calc_txstamp(rtp, &f->delivery);
02584
02585 if (f->subclass < AST_FORMAT_MAX_AUDIO) {
02586 pred = rtp->lastts + f->samples;
02587
02588
02589 rtp->lastts = rtp->lastts + ms * 8;
02590 if (ast_tvzero(f->delivery)) {
02591
02592
02593 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02594 rtp->lastts = pred;
02595 else {
02596 if (option_debug > 2)
02597 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02598 mark = 1;
02599 }
02600 }
02601 } else {
02602 mark = f->subclass & 0x1;
02603 pred = rtp->lastovidtimestamp + f->samples;
02604
02605 rtp->lastts = rtp->lastts + ms * 90;
02606
02607 if (ast_tvzero(f->delivery)) {
02608 if (abs(rtp->lastts - pred) < 7200) {
02609 rtp->lastts = pred;
02610 rtp->lastovidtimestamp += f->samples;
02611 } else {
02612 if (option_debug > 2)
02613 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);
02614 rtp->lastovidtimestamp = rtp->lastts;
02615 }
02616 }
02617 }
02618
02619
02620
02621 if (rtp->lastts > rtp->lastdigitts)
02622 rtp->lastdigitts = rtp->lastts;
02623
02624 if (f->has_timing_info)
02625 rtp->lastts = f->ts * 8;
02626
02627
02628 rtpheader = (unsigned char *)(f->data - hdrlen);
02629
02630 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02631 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02632 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02633
02634 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02635 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02636 if (res <0) {
02637 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02638 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));
02639 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02640
02641 if (option_debug || rtpdebug)
02642 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));
02643 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02644 }
02645 } else {
02646 rtp->txcount++;
02647 rtp->txoctetcount +=(res - hdrlen);
02648
02649 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02650 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02651 }
02652
02653 if (rtp_debug_test_addr(&rtp->them))
02654 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02655 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02656 }
02657
02658 rtp->seqno++;
02659
02660 return 0;
02661 }
02662
02663 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02664 {
02665 int x;
02666 for (x = 0; x < 32; x++) {
02667 rtp->pref.order[x] = prefs->order[x];
02668 rtp->pref.framing[x] = prefs->framing[x];
02669 }
02670 if (rtp->smoother)
02671 ast_smoother_free(rtp->smoother);
02672 rtp->smoother = NULL;
02673 return 0;
02674 }
02675
02676 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02677 {
02678 return &rtp->pref;
02679 }
02680
02681 int ast_rtp_codec_getformat(int pt)
02682 {
02683 if (pt < 0 || pt > MAX_RTP_PT)
02684 return 0;
02685
02686 if (static_RTP_PT[pt].isAstFormat)
02687 return static_RTP_PT[pt].code;
02688 else
02689 return 0;
02690 }
02691
02692 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02693 {
02694 struct ast_frame *f;
02695 int codec;
02696 int hdrlen = 12;
02697 int subclass;
02698
02699
02700
02701 if (!rtp->them.sin_addr.s_addr)
02702 return 0;
02703
02704
02705 if (!_f->datalen)
02706 return 0;
02707
02708
02709 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02710 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02711 return -1;
02712 }
02713
02714 subclass = _f->subclass;
02715 if (_f->frametype == AST_FRAME_VIDEO)
02716 subclass &= ~0x1;
02717
02718 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02719 if (codec < 0) {
02720 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02721 return -1;
02722 }
02723
02724 if (rtp->lasttxformat != subclass) {
02725
02726 if (option_debug)
02727 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02728 rtp->lasttxformat = subclass;
02729 if (rtp->smoother)
02730 ast_smoother_free(rtp->smoother);
02731 rtp->smoother = NULL;
02732 }
02733
02734 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX) {
02735 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02736 if (fmt.inc_ms) {
02737 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02738 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));
02739 return -1;
02740 }
02741 if (fmt.flags)
02742 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02743 if (option_debug)
02744 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));
02745 }
02746 }
02747 if (rtp->smoother) {
02748 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02749 ast_smoother_feed_be(rtp->smoother, _f);
02750 } else {
02751 ast_smoother_feed(rtp->smoother, _f);
02752 }
02753
02754 while((f = ast_smoother_read(rtp->smoother)) && (f->data))
02755 ast_rtp_raw_write(rtp, f, codec);
02756 } else {
02757
02758 if (_f->offset < hdrlen) {
02759 f = ast_frdup(_f);
02760 } else {
02761 f = _f;
02762 }
02763 if (f->data)
02764 ast_rtp_raw_write(rtp, f, codec);
02765 if (f != _f)
02766 ast_frfree(f);
02767 }
02768
02769 return 0;
02770 }
02771
02772
02773 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02774 {
02775 AST_LIST_LOCK(&protos);
02776 AST_LIST_REMOVE(&protos, proto, list);
02777 AST_LIST_UNLOCK(&protos);
02778 }
02779
02780
02781 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02782 {
02783 struct ast_rtp_protocol *cur;
02784
02785 AST_LIST_LOCK(&protos);
02786 AST_LIST_TRAVERSE(&protos, cur, list) {
02787 if (!strcmp(cur->type, proto->type)) {
02788 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02789 AST_LIST_UNLOCK(&protos);
02790 return -1;
02791 }
02792 }
02793 AST_LIST_INSERT_HEAD(&protos, proto, list);
02794 AST_LIST_UNLOCK(&protos);
02795
02796 return 0;
02797 }
02798
02799
02800 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)
02801 {
02802 struct ast_frame *fr = NULL;
02803 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02804 int oldcodec0 = codec0, oldcodec1 = codec1;
02805 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02806 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02807
02808
02809
02810
02811 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02812 ast_rtp_get_peer(p1, &ac1);
02813 if (vp1)
02814 ast_rtp_get_peer(vp1, &vac1);
02815 } else
02816 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02817
02818
02819 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02820 ast_rtp_get_peer(p0, &ac0);
02821 if (vp0)
02822 ast_rtp_get_peer(vp0, &vac0);
02823 } else
02824 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02825
02826
02827 ast_channel_unlock(c0);
02828 ast_channel_unlock(c1);
02829
02830
02831 cs[0] = c0;
02832 cs[1] = c1;
02833 cs[2] = NULL;
02834 for (;;) {
02835
02836 if ((c0->tech_pvt != pvt0) ||
02837 (c1->tech_pvt != pvt1) ||
02838 (c0->masq || c0->masqr || c1->masq || c1->masqr)) {
02839 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02840 if (c0->tech_pvt == pvt0)
02841 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02842 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02843 if (c1->tech_pvt == pvt1)
02844 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02845 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02846 return AST_BRIDGE_RETRY;
02847 }
02848
02849
02850 ast_rtp_get_peer(p1, &t1);
02851 if (vp1)
02852 ast_rtp_get_peer(vp1, &vt1);
02853 if (pr1->get_codec)
02854 codec1 = pr1->get_codec(c1);
02855 ast_rtp_get_peer(p0, &t0);
02856 if (vp0)
02857 ast_rtp_get_peer(vp0, &vt0);
02858 if (pr0->get_codec)
02859 codec0 = pr0->get_codec(c0);
02860 if ((inaddrcmp(&t1, &ac1)) ||
02861 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02862 (codec1 != oldcodec1)) {
02863 if (option_debug > 1) {
02864 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02865 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02866 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02867 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02868 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02869 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02870 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02871 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02872 }
02873 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)))
02874 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02875 memcpy(&ac1, &t1, sizeof(ac1));
02876 memcpy(&vac1, &vt1, sizeof(vac1));
02877 oldcodec1 = codec1;
02878 }
02879 if ((inaddrcmp(&t0, &ac0)) ||
02880 (vp0 && inaddrcmp(&vt0, &vac0))) {
02881 if (option_debug > 1) {
02882 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02883 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02884 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02885 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02886 }
02887 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)))
02888 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02889 memcpy(&ac0, &t0, sizeof(ac0));
02890 memcpy(&vac0, &vt0, sizeof(vac0));
02891 oldcodec0 = codec0;
02892 }
02893
02894
02895 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02896 if (!timeoutms) {
02897 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02898 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02899 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02900 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02901 return AST_BRIDGE_RETRY;
02902 }
02903 if (option_debug)
02904 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02905 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02906 break;
02907 continue;
02908 }
02909 fr = ast_read(who);
02910 other = (who == c0) ? c1 : c0;
02911 if (!fr || ((fr->frametype == AST_FRAME_DTMF) &&
02912 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02913 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02914
02915 *fo = fr;
02916 *rc = who;
02917 if (option_debug)
02918 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02919 if (c0->tech_pvt == pvt0)
02920 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02921 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02922 if (c1->tech_pvt == pvt1)
02923 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02924 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02925 return AST_BRIDGE_COMPLETE;
02926 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
02927 if ((fr->subclass == AST_CONTROL_HOLD) ||
02928 (fr->subclass == AST_CONTROL_UNHOLD) ||
02929 (fr->subclass == AST_CONTROL_VIDUPDATE)) {
02930 if (fr->subclass == AST_CONTROL_HOLD) {
02931
02932 if (who == c0)
02933 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
02934 else
02935 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
02936 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
02937
02938 if (who == c0)
02939 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
02940 else
02941 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
02942 }
02943 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
02944 ast_frfree(fr);
02945 } else {
02946 *fo = fr;
02947 *rc = who;
02948 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
02949 return AST_BRIDGE_COMPLETE;
02950 }
02951 } else {
02952 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
02953 (fr->frametype == AST_FRAME_DTMF) ||
02954 (fr->frametype == AST_FRAME_VOICE) ||
02955 (fr->frametype == AST_FRAME_VIDEO) ||
02956 (fr->frametype == AST_FRAME_IMAGE) ||
02957 (fr->frametype == AST_FRAME_HTML) ||
02958 (fr->frametype == AST_FRAME_MODEM) ||
02959 (fr->frametype == AST_FRAME_TEXT)) {
02960 ast_write(other, fr);
02961 }
02962 ast_frfree(fr);
02963 }
02964
02965 cs[2] = cs[0];
02966 cs[0] = cs[1];
02967 cs[1] = cs[2];
02968 }
02969
02970 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02971 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02972 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02973 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02974
02975 return AST_BRIDGE_FAILED;
02976 }
02977
02978
02979 #ifdef P2P_INTENSE
02980 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
02981 {
02982 int res = 0, hdrlen = 12;
02983 struct sockaddr_in sin;
02984 socklen_t len;
02985 unsigned int *header;
02986 struct ast_rtp *rtp = cbdata, *bridged = NULL;
02987
02988 if (!rtp)
02989 return 1;
02990
02991 len = sizeof(sin);
02992 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
02993 return 1;
02994
02995 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
02996
02997
02998 if ((rtp->nat) &&
02999 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03000 (rtp->them.sin_port != sin.sin_port))) {
03001 rtp->them = sin;
03002 rtp->rxseqno = 0;
03003 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03004 if (option_debug || rtpdebug)
03005 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));
03006 }
03007
03008
03009 if ((bridged = ast_rtp_get_bridged(rtp)))
03010 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03011
03012 return 1;
03013 }
03014
03015
03016 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03017 {
03018
03019 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03020 return 0;
03021
03022
03023 if (rtp->ioid) {
03024 ast_io_remove(rtp->io, rtp->ioid);
03025 rtp->ioid = NULL;
03026 }
03027
03028
03029 fds[0] = chan->fds[0];
03030 chan->fds[0] = -1;
03031
03032
03033 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03034
03035 return 1;
03036 }
03037 #else
03038 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03039 {
03040 return 0;
03041 }
03042 #endif
03043
03044
03045 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03046 {
03047 ast_channel_lock(chan);
03048
03049
03050 ast_io_remove(rtp->io, iod[0]);
03051
03052
03053 chan->fds[0] = fds[0];
03054 ast_channel_unlock(chan);
03055
03056
03057 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03058 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03059
03060 return 0;
03061 }
03062
03063
03064 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03065 {
03066 ast_mutex_lock(&rtp0->bridge_lock);
03067 rtp0->bridged = rtp1;
03068 ast_mutex_unlock(&rtp0->bridge_lock);
03069
03070 return;
03071 }
03072
03073
03074 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)
03075 {
03076 struct ast_frame *fr = NULL;
03077 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03078 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03079 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03080 int p0_callback = 0, p1_callback = 0;
03081 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03082
03083
03084 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03085 p2p_set_bridge(p0, p1);
03086 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03087 p2p_set_bridge(p1, p0);
03088
03089
03090 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03091 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03092
03093
03094 ast_channel_unlock(c0);
03095 ast_channel_unlock(c1);
03096
03097
03098 cs[0] = c0;
03099 cs[1] = c1;
03100 cs[2] = NULL;
03101 for (;;) {
03102
03103 if ((c0->tech_pvt != pvt0) ||
03104 (c1->tech_pvt != pvt1) ||
03105 (c0->masq || c0->masqr || c1->masq || c1->masqr)) {
03106 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03107 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03108 ast_frfree(fr);
03109 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03110 ast_frfree(fr);
03111 res = AST_BRIDGE_RETRY;
03112 break;
03113 }
03114
03115 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03116 if (!timeoutms) {
03117 res = AST_BRIDGE_RETRY;
03118 break;
03119 }
03120 if (option_debug)
03121 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03122 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03123 break;
03124 continue;
03125 }
03126
03127 fr = ast_read(who);
03128 other = (who == c0) ? c1 : c0;
03129
03130 if (!fr || ((fr->frametype == AST_FRAME_DTMF) &&
03131 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03132 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03133
03134 *fo = fr;
03135 *rc = who;
03136 if (option_debug)
03137 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03138 res = AST_BRIDGE_COMPLETE;
03139 break;
03140 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03141 if ((fr->subclass == AST_CONTROL_HOLD) ||
03142 (fr->subclass == AST_CONTROL_UNHOLD) ||
03143 (fr->subclass == AST_CONTROL_VIDUPDATE)) {
03144
03145 if (fr->subclass == AST_CONTROL_HOLD) {
03146 if (p0_callback)
03147 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03148 if (p1_callback)
03149 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03150 p2p_set_bridge(p0, NULL);
03151 p2p_set_bridge(p1, NULL);
03152 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03153
03154 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03155 p2p_set_bridge(p0, p1);
03156 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03157 p2p_set_bridge(p1, p0);
03158 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03159 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03160 }
03161 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03162 ast_frfree(fr);
03163 } else {
03164 *fo = fr;
03165 *rc = who;
03166 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03167 res = AST_BRIDGE_COMPLETE;
03168 break;
03169 }
03170 } else {
03171 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03172 (fr->frametype == AST_FRAME_DTMF) ||
03173 (fr->frametype == AST_FRAME_VOICE) ||
03174 (fr->frametype == AST_FRAME_VIDEO) ||
03175 (fr->frametype == AST_FRAME_IMAGE) ||
03176 (fr->frametype == AST_FRAME_HTML) ||
03177 (fr->frametype == AST_FRAME_MODEM) ||
03178 (fr->frametype == AST_FRAME_TEXT)) {
03179 ast_write(other, fr);
03180 }
03181
03182 ast_frfree(fr);
03183 }
03184
03185 cs[2] = cs[0];
03186 cs[0] = cs[1];
03187 cs[1] = cs[2];
03188 }
03189
03190
03191 if (p0_callback)
03192 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03193 if (p1_callback)
03194 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03195
03196
03197 p2p_set_bridge(p0, NULL);
03198 p2p_set_bridge(p1, NULL);
03199
03200 return res;
03201 }
03202
03203
03204
03205
03206 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)
03207 {
03208 struct ast_rtp *p0 = NULL, *p1 = NULL;
03209 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03210 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03211 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03212 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03213 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03214 int codec0 = 0, codec1 = 0;
03215 void *pvt0 = NULL, *pvt1 = NULL;
03216
03217
03218 ast_channel_lock(c0);
03219 while(ast_channel_trylock(c1)) {
03220 ast_channel_unlock(c0);
03221 usleep(1);
03222 ast_channel_lock(c0);
03223 }
03224
03225
03226 if (!(pr0 = get_proto(c0))) {
03227 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03228 ast_channel_unlock(c0);
03229 ast_channel_unlock(c1);
03230 return AST_BRIDGE_FAILED;
03231 }
03232 if (!(pr1 = get_proto(c1))) {
03233 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03234 ast_channel_unlock(c0);
03235 ast_channel_unlock(c1);
03236 return AST_BRIDGE_FAILED;
03237 }
03238
03239
03240 pvt0 = c0->tech_pvt;
03241 pvt1 = c1->tech_pvt;
03242
03243
03244 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03245 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03246 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03247 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03248
03249
03250 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03251 audio_p0_res = AST_RTP_GET_FAILED;
03252 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03253 audio_p1_res = AST_RTP_GET_FAILED;
03254
03255
03256 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03257
03258 ast_channel_unlock(c0);
03259 ast_channel_unlock(c1);
03260 return AST_BRIDGE_FAILED_NOWARN;
03261 }
03262
03263
03264 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03265 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03266 audio_p0_res = AST_RTP_TRY_PARTIAL;
03267 }
03268
03269 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03270 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03271 audio_p1_res = AST_RTP_TRY_PARTIAL;
03272 }
03273
03274
03275
03276
03277
03278
03279
03280
03281
03282
03283
03284
03285
03286
03287 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03288 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03289 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03290 ast_channel_unlock(c0);
03291 ast_channel_unlock(c1);
03292 return AST_BRIDGE_FAILED_NOWARN;
03293 }
03294 audio_p0_res = AST_RTP_TRY_PARTIAL;
03295 audio_p1_res = AST_RTP_TRY_PARTIAL;
03296 }
03297
03298
03299 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF) && ast_test_flag(p0, FLAG_DTMF_COMPENSATE)) ||
03300 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF) && ast_test_flag(p1, FLAG_DTMF_COMPENSATE))) {
03301 ast_channel_unlock(c0);
03302 ast_channel_unlock(c1);
03303 return AST_BRIDGE_FAILED_NOWARN;
03304 }
03305
03306
03307 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03308 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03309 if (codec0 && codec1 && !(codec0 & codec1)) {
03310
03311 if (option_debug)
03312 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03313 ast_channel_unlock(c0);
03314 ast_channel_unlock(c1);
03315 return AST_BRIDGE_FAILED_NOWARN;
03316 }
03317
03318
03319 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03320 struct ast_format_list fmt0, fmt1;
03321
03322
03323 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03324 if (option_debug)
03325 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03326 ast_channel_unlock(c0);
03327 ast_channel_unlock(c1);
03328 return AST_BRIDGE_FAILED_NOWARN;
03329 }
03330
03331 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03332 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03333 if (fmt0.cur_ms != fmt1.cur_ms) {
03334 if (option_debug)
03335 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03336 ast_channel_unlock(c0);
03337 ast_channel_unlock(c1);
03338 return AST_BRIDGE_FAILED_NOWARN;
03339 }
03340
03341 if (option_verbose > 2)
03342 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03343 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03344 } else {
03345 if (option_verbose > 2)
03346 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03347 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03348 }
03349
03350 return res;
03351 }
03352
03353 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03354 {
03355 struct hostent *hp;
03356 struct ast_hostent ahp;
03357 int port = 0;
03358 char *p, *arg;
03359
03360 if (argc != 4)
03361 return RESULT_SHOWUSAGE;
03362 arg = argv[3];
03363 p = strstr(arg, ":");
03364 if (p) {
03365 *p = '\0';
03366 p++;
03367 port = atoi(p);
03368 }
03369 hp = ast_gethostbyname(arg, &ahp);
03370 if (hp == NULL)
03371 return RESULT_SHOWUSAGE;
03372 rtpdebugaddr.sin_family = AF_INET;
03373 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03374 rtpdebugaddr.sin_port = htons(port);
03375 if (port == 0)
03376 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03377 else
03378 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03379 rtpdebug = 1;
03380 return RESULT_SUCCESS;
03381 }
03382
03383 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03384 {
03385 struct hostent *hp;
03386 struct ast_hostent ahp;
03387 int port = 0;
03388 char *p, *arg;
03389 if (argc != 5)
03390 return RESULT_SHOWUSAGE;
03391
03392 arg = argv[4];
03393 p = strstr(arg, ":");
03394 if (p) {
03395 *p = '\0';
03396 p++;
03397 port = atoi(p);
03398 }
03399 hp = ast_gethostbyname(arg, &ahp);
03400 if (hp == NULL)
03401 return RESULT_SHOWUSAGE;
03402 rtcpdebugaddr.sin_family = AF_INET;
03403 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03404 rtcpdebugaddr.sin_port = htons(port);
03405 if (port == 0)
03406 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03407 else
03408 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03409 rtcpdebug = 1;
03410 return RESULT_SUCCESS;
03411 }
03412
03413 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03414 {
03415 struct hostent *hp;
03416 struct ast_hostent ahp;
03417 int port = 0;
03418 char *p, *arg;
03419 if (argc != 4)
03420 return RESULT_SHOWUSAGE;
03421
03422 arg = argv[3];
03423 p = strstr(arg, ":");
03424 if (p) {
03425 *p = '\0';
03426 p++;
03427 port = atoi(p);
03428 }
03429 hp = ast_gethostbyname(arg, &ahp);
03430 if (hp == NULL)
03431 return RESULT_SHOWUSAGE;
03432 rtcpdebugaddr.sin_family = AF_INET;
03433 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03434 rtcpdebugaddr.sin_port = htons(port);
03435 if (port == 0)
03436 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03437 else
03438 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03439 rtcpdebug = 1;
03440 return RESULT_SUCCESS;
03441 }
03442
03443 static int rtp_do_debug(int fd, int argc, char *argv[])
03444 {
03445 if (argc != 2) {
03446 if (argc != 4)
03447 return RESULT_SHOWUSAGE;
03448 return rtp_do_debug_ip(fd, argc, argv);
03449 }
03450 rtpdebug = 1;
03451 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03452 ast_cli(fd, "RTP Debugging Enabled\n");
03453 return RESULT_SUCCESS;
03454 }
03455
03456 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03457 if (argc != 3) {
03458 if (argc != 5)
03459 return RESULT_SHOWUSAGE;
03460 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03461 }
03462 rtcpdebug = 1;
03463 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03464 ast_cli(fd, "RTCP Debugging Enabled\n");
03465 return RESULT_SUCCESS;
03466 }
03467
03468 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03469 if (argc != 2) {
03470 if (argc != 4)
03471 return RESULT_SHOWUSAGE;
03472 return rtcp_do_debug_ip(fd, argc, argv);
03473 }
03474 rtcpdebug = 1;
03475 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03476 ast_cli(fd, "RTCP Debugging Enabled\n");
03477 return RESULT_SUCCESS;
03478 }
03479
03480 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03481 if (argc != 3) {
03482 return RESULT_SHOWUSAGE;
03483 }
03484 rtcpstats = 1;
03485 ast_cli(fd, "RTCP Stats Enabled\n");
03486 return RESULT_SUCCESS;
03487 }
03488
03489 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03490 if (argc != 2) {
03491 return RESULT_SHOWUSAGE;
03492 }
03493 rtcpstats = 1;
03494 ast_cli(fd, "RTCP Stats Enabled\n");
03495 return RESULT_SUCCESS;
03496 }
03497
03498 static int rtp_no_debug(int fd, int argc, char *argv[])
03499 {
03500 if (argc != 3)
03501 return RESULT_SHOWUSAGE;
03502 rtpdebug = 0;
03503 ast_cli(fd,"RTP Debugging Disabled\n");
03504 return RESULT_SUCCESS;
03505 }
03506
03507 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03508 {
03509 if (argc != 4)
03510 return RESULT_SHOWUSAGE;
03511 rtcpdebug = 0;
03512 ast_cli(fd,"RTCP Debugging Disabled\n");
03513 return RESULT_SUCCESS;
03514 }
03515
03516 static int rtcp_no_debug(int fd, int argc, char *argv[])
03517 {
03518 if (argc != 3)
03519 return RESULT_SHOWUSAGE;
03520 rtcpdebug = 0;
03521 ast_cli(fd,"RTCP Debugging Disabled\n");
03522 return RESULT_SUCCESS;
03523 }
03524
03525 static int rtcp_no_stats_deprecated(int fd, int argc, char *argv[])
03526 {
03527 if (argc != 4)
03528 return RESULT_SHOWUSAGE;
03529 rtcpstats = 0;
03530 ast_cli(fd,"RTCP Stats Disabled\n");
03531 return RESULT_SUCCESS;
03532 }
03533
03534 static int rtcp_no_stats(int fd, int argc, char *argv[])
03535 {
03536 if (argc != 3)
03537 return RESULT_SHOWUSAGE;
03538 rtcpstats = 0;
03539 ast_cli(fd,"RTCP Stats Disabled\n");
03540 return RESULT_SUCCESS;
03541 }
03542
03543 static int stun_do_debug(int fd, int argc, char *argv[])
03544 {
03545 if (argc != 2) {
03546 return RESULT_SHOWUSAGE;
03547 }
03548 stundebug = 1;
03549 ast_cli(fd, "STUN Debugging Enabled\n");
03550 return RESULT_SUCCESS;
03551 }
03552
03553 static int stun_no_debug(int fd, int argc, char *argv[])
03554 {
03555 if (argc != 3)
03556 return RESULT_SHOWUSAGE;
03557 stundebug = 0;
03558 ast_cli(fd, "STUN Debugging Disabled\n");
03559 return RESULT_SUCCESS;
03560 }
03561
03562 static char debug_usage[] =
03563 "Usage: rtp debug [ip host[:port]]\n"
03564 " Enable dumping of all RTP packets to and from host.\n";
03565
03566 static char no_debug_usage[] =
03567 "Usage: rtp debug off\n"
03568 " Disable all RTP debugging\n";
03569
03570 static char stun_debug_usage[] =
03571 "Usage: stun debug\n"
03572 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03573
03574 static char stun_no_debug_usage[] =
03575 "Usage: stun debug off\n"
03576 " Disable STUN debugging\n";
03577
03578 static char rtcp_debug_usage[] =
03579 "Usage: rtcp debug [ip host[:port]]\n"
03580 " Enable dumping of all RTCP packets to and from host.\n";
03581
03582 static char rtcp_no_debug_usage[] =
03583 "Usage: rtcp debug off\n"
03584 " Disable all RTCP debugging\n";
03585
03586 static char rtcp_stats_usage[] =
03587 "Usage: rtcp stats\n"
03588 " Enable dumping of RTCP stats.\n";
03589
03590 static char rtcp_no_stats_usage[] =
03591 "Usage: rtcp stats off\n"
03592 " Disable all RTCP stats\n";
03593
03594 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03595 { "rtp", "no", "debug", NULL },
03596 rtp_no_debug, NULL,
03597 NULL };
03598
03599 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03600 { "rtp", "rtcp", "debug", "ip", NULL },
03601 rtcp_do_debug_deprecated, NULL,
03602 NULL };
03603
03604 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03605 { "rtp", "rtcp", "debug", NULL },
03606 rtcp_do_debug_deprecated, NULL,
03607 NULL };
03608
03609 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03610 { "rtp", "rtcp", "no", "debug", NULL },
03611 rtcp_no_debug_deprecated, NULL,
03612 NULL };
03613
03614 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03615 { "rtp", "rtcp", "stats", NULL },
03616 rtcp_do_stats_deprecated, NULL,
03617 NULL };
03618
03619 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03620 { "rtp", "rtcp", "no", "stats", NULL },
03621 rtcp_no_stats_deprecated, NULL,
03622 NULL };
03623
03624 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03625 { "stun", "no", "debug", NULL },
03626 stun_no_debug, NULL,
03627 NULL };
03628
03629 static struct ast_cli_entry cli_rtp[] = {
03630 { { "rtp", "debug", "ip", NULL },
03631 rtp_do_debug, "Enable RTP debugging on IP",
03632 debug_usage },
03633
03634 { { "rtp", "debug", NULL },
03635 rtp_do_debug, "Enable RTP debugging",
03636 debug_usage },
03637
03638 { { "rtp", "debug", "off", NULL },
03639 rtp_no_debug, "Disable RTP debugging",
03640 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03641
03642 { { "rtcp", "debug", "ip", NULL },
03643 rtcp_do_debug, "Enable RTCP debugging on IP",
03644 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03645
03646 { { "rtcp", "debug", NULL },
03647 rtcp_do_debug, "Enable RTCP debugging",
03648 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03649
03650 { { "rtcp", "debug", "off", NULL },
03651 rtcp_no_debug, "Disable RTCP debugging",
03652 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03653
03654 { { "rtcp", "stats", NULL },
03655 rtcp_do_stats, "Enable RTCP stats",
03656 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03657
03658 { { "rtcp", "stats", "off", NULL },
03659 rtcp_no_stats, "Disable RTCP stats",
03660 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03661
03662 { { "stun", "debug", NULL },
03663 stun_do_debug, "Enable STUN debugging",
03664 stun_debug_usage },
03665
03666 { { "stun", "debug", "off", NULL },
03667 stun_no_debug, "Disable STUN debugging",
03668 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03669 };
03670
03671 int ast_rtp_reload(void)
03672 {
03673 struct ast_config *cfg;
03674 const char *s;
03675
03676 rtpstart = 5000;
03677 rtpend = 31000;
03678 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03679 cfg = ast_config_load("rtp.conf");
03680 if (cfg) {
03681 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03682 rtpstart = atoi(s);
03683 if (rtpstart < 1024)
03684 rtpstart = 1024;
03685 if (rtpstart > 65535)
03686 rtpstart = 65535;
03687 }
03688 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03689 rtpend = atoi(s);
03690 if (rtpend < 1024)
03691 rtpend = 1024;
03692 if (rtpend > 65535)
03693 rtpend = 65535;
03694 }
03695 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03696 rtcpinterval = atoi(s);
03697 if (rtcpinterval == 0)
03698 rtcpinterval = 0;
03699 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03700 rtcpinterval = RTCP_MIN_INTERVALMS;
03701 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03702 rtcpinterval = RTCP_MAX_INTERVALMS;
03703 }
03704 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03705 #ifdef SO_NO_CHECK
03706 if (ast_false(s))
03707 nochecksums = 1;
03708 else
03709 nochecksums = 0;
03710 #else
03711 if (ast_false(s))
03712 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03713 #endif
03714 }
03715 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03716 dtmftimeout = atoi(s);
03717 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03718 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03719 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03720 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03721 };
03722 }
03723 ast_config_destroy(cfg);
03724 }
03725 if (rtpstart >= rtpend) {
03726 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03727 rtpstart = 5000;
03728 rtpend = 31000;
03729 }
03730 if (option_verbose > 1)
03731 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03732 return 0;
03733 }
03734
03735
03736 void ast_rtp_init(void)
03737 {
03738 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03739 ast_rtp_reload();
03740 }
03741