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00029 #include "asterisk.h"
00030
00031 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
00032
00033 #include <stdio.h>
00034 #include <stdlib.h>
00035 #include <string.h>
00036 #include <sys/time.h>
00037 #include <signal.h>
00038 #include <errno.h>
00039 #include <unistd.h>
00040 #include <netinet/in.h>
00041 #include <sys/time.h>
00042 #include <sys/socket.h>
00043 #include <arpa/inet.h>
00044 #include <fcntl.h>
00045
00046 #include "asterisk/rtp.h"
00047 #include "asterisk/frame.h"
00048 #include "asterisk/logger.h"
00049 #include "asterisk/options.h"
00050 #include "asterisk/channel.h"
00051 #include "asterisk/acl.h"
00052 #include "asterisk/channel.h"
00053 #include "asterisk/config.h"
00054 #include "asterisk/lock.h"
00055 #include "asterisk/utils.h"
00056 #include "asterisk/cli.h"
00057 #include "asterisk/unaligned.h"
00058 #include "asterisk/utils.h"
00059
00060 #define MAX_TIMESTAMP_SKEW 640
00061
00062 #define RTP_SEQ_MOD (1<<16)
00063 #define RTCP_DEFAULT_INTERVALMS 5000
00064 #define RTCP_MIN_INTERVALMS 500
00065 #define RTCP_MAX_INTERVALMS 60000
00066
00067 #define RTCP_PT_FUR 192
00068 #define RTCP_PT_SR 200
00069 #define RTCP_PT_RR 201
00070 #define RTCP_PT_SDES 202
00071 #define RTCP_PT_BYE 203
00072 #define RTCP_PT_APP 204
00073
00074 #define RTP_MTU 1200
00075
00076 #define DEFAULT_DTMF_TIMEOUT 3000
00077
00078 static int dtmftimeout = DEFAULT_DTMF_TIMEOUT;
00079
00080 static int rtpstart;
00081 static int rtpend;
00082 static int rtpdebug;
00083 static int rtcpdebug;
00084 static int rtcpstats;
00085 static int rtcpinterval = RTCP_DEFAULT_INTERVALMS;
00086 static int stundebug;
00087 static struct sockaddr_in rtpdebugaddr;
00088 static struct sockaddr_in rtcpdebugaddr;
00089 #ifdef SO_NO_CHECK
00090 static int nochecksums;
00091 #endif
00092
00093
00094
00095
00096
00097
00098
00099
00100
00101
00102
00103 struct rtpPayloadType {
00104 int isAstFormat;
00105 int code;
00106 };
00107
00108
00109
00110 struct ast_rtp {
00111 int s;
00112 struct ast_frame f;
00113 unsigned char rawdata[8192 + AST_FRIENDLY_OFFSET];
00114 unsigned int ssrc;
00115 unsigned int themssrc;
00116 unsigned int rxssrc;
00117 unsigned int lastts;
00118 unsigned int lastrxts;
00119 unsigned int lastividtimestamp;
00120 unsigned int lastovidtimestamp;
00121 unsigned int lasteventseqn;
00122 int lastrxseqno;
00123 unsigned short seedrxseqno;
00124 unsigned int seedrxts;
00125 unsigned int rxcount;
00126 unsigned int rxoctetcount;
00127 unsigned int txcount;
00128 unsigned int txoctetcount;
00129 unsigned int cycles;
00130 double rxjitter;
00131 double rxtransit;
00132 int lasttxformat;
00133 int lastrxformat;
00134
00135 int rtptimeout;
00136 int rtpholdtimeout;
00137 int rtpkeepalive;
00138
00139
00140 char resp;
00141 unsigned int lastevent;
00142 int dtmfcount;
00143 unsigned int dtmfsamples;
00144
00145 unsigned int lastdigitts;
00146 char sending_digit;
00147 char send_digit;
00148 int send_payload;
00149 int send_duration;
00150 int nat;
00151 unsigned int flags;
00152 struct sockaddr_in us;
00153 struct sockaddr_in them;
00154 struct timeval rxcore;
00155 struct timeval txcore;
00156 double drxcore;
00157 struct timeval lastrx;
00158 struct timeval dtmfmute;
00159 struct ast_smoother *smoother;
00160 int *ioid;
00161 unsigned short seqno;
00162 unsigned short rxseqno;
00163 struct sched_context *sched;
00164 struct io_context *io;
00165 void *data;
00166 ast_rtp_callback callback;
00167 ast_mutex_t bridge_lock;
00168 struct rtpPayloadType current_RTP_PT[MAX_RTP_PT];
00169 int rtp_lookup_code_cache_isAstFormat;
00170 int rtp_lookup_code_cache_code;
00171 int rtp_lookup_code_cache_result;
00172 struct ast_rtcp *rtcp;
00173 struct ast_codec_pref pref;
00174 struct ast_rtp *bridged;
00175 };
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 if( !rtp ) {
01117 ast_log(LOG_ERROR, "ast_rtp_read(): called with rtp == NULL\n");
01118 ast_backtrace();
01119 return &ast_null_frame;
01120 }
01121
01122
01123 if (rtp->sending_digit)
01124 ast_rtp_senddigit_continuation(rtp);
01125
01126 len = sizeof(sin);
01127
01128
01129 res = recvfrom(rtp->s, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET,
01130 0, (struct sockaddr *)&sin, &len);
01131
01132 rtpheader = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
01133 if (res < 0) {
01134 if (errno == EBADF)
01135 CRASH;
01136 if (errno != EAGAIN) {
01137 ast_log(LOG_WARNING, "RTP Read error: %s. Hanging up.\n", strerror(errno));
01138 return NULL;
01139 }
01140 return &ast_null_frame;
01141 }
01142
01143 if (res < hdrlen) {
01144 ast_log(LOG_WARNING, "RTP Read too short\n");
01145 return &ast_null_frame;
01146 }
01147
01148
01149 seqno = ntohl(rtpheader[0]);
01150
01151
01152 version = (seqno & 0xC0000000) >> 30;
01153 if (!version) {
01154 if ((stun_handle_packet(rtp->s, &sin, rtp->rawdata + AST_FRIENDLY_OFFSET, res) == STUN_ACCEPT) &&
01155 (!rtp->them.sin_port && !rtp->them.sin_addr.s_addr)) {
01156 memcpy(&rtp->them, &sin, sizeof(rtp->them));
01157 }
01158 return &ast_null_frame;
01159 }
01160
01161 #if 0
01162
01163 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
01164 return &ast_null_frame;
01165 #endif
01166
01167
01168 if (rtp->nat) {
01169 if ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
01170 (rtp->them.sin_port != sin.sin_port)) {
01171 rtp->them = sin;
01172 if (rtp->rtcp) {
01173 memcpy(&rtp->rtcp->them, &sin, sizeof(rtp->rtcp->them));
01174 rtp->rtcp->them.sin_port = htons(ntohs(rtp->them.sin_port)+1);
01175 }
01176 rtp->rxseqno = 0;
01177 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
01178 if (option_debug || rtpdebug)
01179 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));
01180 }
01181 }
01182
01183
01184 if ((bridged = ast_rtp_get_bridged(rtp)) && !bridge_p2p_rtp_write(rtp, bridged, rtpheader, res, hdrlen))
01185 return &ast_null_frame;
01186
01187 if (version != 2)
01188 return &ast_null_frame;
01189
01190 payloadtype = (seqno & 0x7f0000) >> 16;
01191 padding = seqno & (1 << 29);
01192 mark = seqno & (1 << 23);
01193 ext = seqno & (1 << 28);
01194 cc = (seqno & 0xF000000) >> 24;
01195 seqno &= 0xffff;
01196 timestamp = ntohl(rtpheader[1]);
01197 ssrc = ntohl(rtpheader[2]);
01198
01199 if (!mark && rtp->rxssrc && rtp->rxssrc != ssrc) {
01200 if (option_debug || rtpdebug)
01201 ast_log(LOG_DEBUG, "Forcing Marker bit, because SSRC has changed\n");
01202 mark = 1;
01203 }
01204
01205 rtp->rxssrc = ssrc;
01206
01207 if (padding) {
01208
01209 res -= rtp->rawdata[AST_FRIENDLY_OFFSET + res - 1];
01210 }
01211
01212 if (cc) {
01213
01214 hdrlen += cc*4;
01215 }
01216
01217 if (ext) {
01218
01219 hdrlen += (ntohl(rtpheader[hdrlen/4]) & 0xffff) << 2;
01220 hdrlen += 4;
01221 if (option_debug) {
01222 int profile;
01223 profile = (ntohl(rtpheader[3]) & 0xffff0000) >> 16;
01224 if (profile == 0x505a)
01225 ast_log(LOG_DEBUG, "Found Zfone extension in RTP stream - zrtp - not supported.\n");
01226 else
01227 ast_log(LOG_DEBUG, "Found unknown RTP Extensions %x\n", profile);
01228 }
01229 }
01230
01231 if (res < hdrlen) {
01232 ast_log(LOG_WARNING, "RTP Read too short (%d, expecting %d)\n", res, hdrlen);
01233 return &ast_null_frame;
01234 }
01235
01236 rtp->rxcount++;
01237
01238 if (rtp->rxcount==1) {
01239
01240 rtp->seedrxseqno = seqno;
01241 }
01242
01243
01244 if (rtp->rtcp && rtp->rtcp->them.sin_addr.s_addr && rtp->rtcp->schedid < 1) {
01245
01246 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
01247 }
01248 if ( (int)rtp->lastrxseqno - (int)seqno > 100)
01249 rtp->cycles += RTP_SEQ_MOD;
01250
01251 rtp->lastrxseqno = seqno;
01252
01253 if (rtp->themssrc==0)
01254 rtp->themssrc = ntohl(rtpheader[2]);
01255
01256 if (rtp_debug_test_addr(&sin))
01257 ast_verbose("Got RTP packet from %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
01258 ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port), payloadtype, seqno, timestamp,res - hdrlen);
01259
01260 rtpPT = ast_rtp_lookup_pt(rtp, payloadtype);
01261 if (!rtpPT.isAstFormat) {
01262 struct ast_frame *f = NULL;
01263
01264
01265 if (rtpPT.code == AST_RTP_DTMF) {
01266
01267 if (rtp_debug_test_addr(&sin)) {
01268 unsigned char *data;
01269 unsigned int event;
01270 unsigned int event_end;
01271 unsigned int duration;
01272 data = rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen;
01273 event = ntohl(*((unsigned int *)(data)));
01274 event >>= 24;
01275 event_end = ntohl(*((unsigned int *)(data)));
01276 event_end <<= 8;
01277 event_end >>= 24;
01278 duration = ntohl(*((unsigned int *)(data)));
01279 duration &= 0xFFFF;
01280 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);
01281 }
01282 f = process_rfc2833(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen, seqno, timestamp);
01283 } else if (rtpPT.code == AST_RTP_CISCO_DTMF) {
01284
01285 if (rtp->lastevent <= seqno || (rtp->lastevent >= 65530 && seqno <= 6)) {
01286 f = process_cisco_dtmf(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01287 rtp->lastevent = seqno;
01288 }
01289 } else if (rtpPT.code == AST_RTP_CN) {
01290
01291 f = process_rfc3389(rtp, rtp->rawdata + AST_FRIENDLY_OFFSET + hdrlen, res - hdrlen);
01292 } else {
01293 ast_log(LOG_NOTICE, "Unknown RTP codec %d received from '%s'\n", payloadtype, ast_inet_ntoa(rtp->them.sin_addr));
01294 }
01295 return f ? f : &ast_null_frame;
01296 }
01297 rtp->lastrxformat = rtp->f.subclass = rtpPT.code;
01298 rtp->f.frametype = (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) ? AST_FRAME_VOICE : AST_FRAME_VIDEO;
01299
01300 if (!rtp->lastrxts)
01301 rtp->lastrxts = timestamp;
01302
01303 rtp->rxseqno = seqno;
01304
01305
01306 rtp->lastrxts = timestamp;
01307
01308 rtp->f.mallocd = 0;
01309 rtp->f.datalen = res - hdrlen;
01310 rtp->f.data = rtp->rawdata + hdrlen + AST_FRIENDLY_OFFSET;
01311 rtp->f.offset = hdrlen + AST_FRIENDLY_OFFSET;
01312 rtp->f.seqno = seqno;
01313 if (rtp->f.subclass < AST_FORMAT_MAX_AUDIO) {
01314 rtp->f.samples = ast_codec_get_samples(&rtp->f);
01315 if (rtp->f.subclass == AST_FORMAT_SLINEAR)
01316 ast_frame_byteswap_be(&rtp->f);
01317 calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark);
01318
01319 rtp->f.has_timing_info = 1;
01320 rtp->f.ts = timestamp / 8;
01321 rtp->f.len = rtp->f.samples / 8;
01322 } else {
01323
01324 if (!rtp->lastividtimestamp)
01325 rtp->lastividtimestamp = timestamp;
01326 rtp->f.samples = timestamp - rtp->lastividtimestamp;
01327 rtp->lastividtimestamp = timestamp;
01328 rtp->f.delivery.tv_sec = 0;
01329 rtp->f.delivery.tv_usec = 0;
01330 if (mark)
01331 rtp->f.subclass |= 0x1;
01332
01333 }
01334 rtp->f.src = "RTP";
01335 return &rtp->f;
01336 }
01337
01338
01339
01340 static struct {
01341 struct rtpPayloadType payloadType;
01342 char* type;
01343 char* subtype;
01344 } mimeTypes[] = {
01345 {{1, AST_FORMAT_G723_1}, "audio", "G723"},
01346 {{1, AST_FORMAT_GSM}, "audio", "GSM"},
01347 {{1, AST_FORMAT_ULAW}, "audio", "PCMU"},
01348 {{1, AST_FORMAT_ALAW}, "audio", "PCMA"},
01349 {{1, AST_FORMAT_G726}, "audio", "G726-32"},
01350 {{1, AST_FORMAT_ADPCM}, "audio", "DVI4"},
01351 {{1, AST_FORMAT_SLINEAR}, "audio", "L16"},
01352 {{1, AST_FORMAT_LPC10}, "audio", "LPC"},
01353 {{1, AST_FORMAT_G729A}, "audio", "G729"},
01354 {{1, AST_FORMAT_SPEEX}, "audio", "speex"},
01355 {{1, AST_FORMAT_ILBC}, "audio", "iLBC"},
01356 {{1, AST_FORMAT_G722}, "audio", "G722"},
01357 {{1, AST_FORMAT_G726_AAL2}, "audio", "AAL2-G726-32"},
01358 {{0, AST_RTP_DTMF}, "audio", "telephone-event"},
01359 {{0, AST_RTP_CISCO_DTMF}, "audio", "cisco-telephone-event"},
01360 {{0, AST_RTP_CN}, "audio", "CN"},
01361 {{1, AST_FORMAT_JPEG}, "video", "JPEG"},
01362 {{1, AST_FORMAT_PNG}, "video", "PNG"},
01363 {{1, AST_FORMAT_H261}, "video", "H261"},
01364 {{1, AST_FORMAT_H263}, "video", "H263"},
01365 {{1, AST_FORMAT_H263_PLUS}, "video", "h263-1998"},
01366 {{1, AST_FORMAT_H264}, "video", "H264"},
01367 {{1, AST_FORMAT_MP4_VIDEO}, "video", "MP4V-ES"},
01368 };
01369
01370
01371
01372
01373 static struct rtpPayloadType static_RTP_PT[MAX_RTP_PT] = {
01374 [0] = {1, AST_FORMAT_ULAW},
01375 #ifdef USE_DEPRECATED_G726
01376 [2] = {1, AST_FORMAT_G726},
01377 #endif
01378 [3] = {1, AST_FORMAT_GSM},
01379 [4] = {1, AST_FORMAT_G723_1},
01380 [5] = {1, AST_FORMAT_ADPCM},
01381 [6] = {1, AST_FORMAT_ADPCM},
01382 [7] = {1, AST_FORMAT_LPC10},
01383 [8] = {1, AST_FORMAT_ALAW},
01384 [9] = {1, AST_FORMAT_G722},
01385 [10] = {1, AST_FORMAT_SLINEAR},
01386 [11] = {1, AST_FORMAT_SLINEAR},
01387 [13] = {0, AST_RTP_CN},
01388 [16] = {1, AST_FORMAT_ADPCM},
01389 [17] = {1, AST_FORMAT_ADPCM},
01390 [18] = {1, AST_FORMAT_G729A},
01391 [19] = {0, AST_RTP_CN},
01392 [26] = {1, AST_FORMAT_JPEG},
01393 [31] = {1, AST_FORMAT_H261},
01394 [34] = {1, AST_FORMAT_H263},
01395 [97] = {1, AST_FORMAT_ILBC},
01396 [99] = {1, AST_FORMAT_H264},
01397 [101] = {0, AST_RTP_DTMF},
01398 [103] = {1, AST_FORMAT_H263_PLUS},
01399 [104] = {1, AST_FORMAT_MP4_VIDEO},
01400 [110] = {1, AST_FORMAT_SPEEX},
01401 [111] = {1, AST_FORMAT_G726},
01402 [112] = {1, AST_FORMAT_G726_AAL2},
01403 [121] = {0, AST_RTP_CISCO_DTMF},
01404 };
01405
01406 void ast_rtp_pt_clear(struct ast_rtp* rtp)
01407 {
01408 int i;
01409
01410 if (!rtp)
01411 return;
01412
01413 ast_mutex_lock(&rtp->bridge_lock);
01414
01415 for (i = 0; i < MAX_RTP_PT; ++i) {
01416 rtp->current_RTP_PT[i].isAstFormat = 0;
01417 rtp->current_RTP_PT[i].code = 0;
01418 }
01419
01420 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01421 rtp->rtp_lookup_code_cache_code = 0;
01422 rtp->rtp_lookup_code_cache_result = 0;
01423
01424 ast_mutex_unlock(&rtp->bridge_lock);
01425 }
01426
01427 void ast_rtp_pt_default(struct ast_rtp* rtp)
01428 {
01429 int i;
01430
01431 ast_mutex_lock(&rtp->bridge_lock);
01432
01433
01434 for (i = 0; i < MAX_RTP_PT; ++i) {
01435 rtp->current_RTP_PT[i].isAstFormat = static_RTP_PT[i].isAstFormat;
01436 rtp->current_RTP_PT[i].code = static_RTP_PT[i].code;
01437 }
01438
01439 rtp->rtp_lookup_code_cache_isAstFormat = 0;
01440 rtp->rtp_lookup_code_cache_code = 0;
01441 rtp->rtp_lookup_code_cache_result = 0;
01442
01443 ast_mutex_unlock(&rtp->bridge_lock);
01444 }
01445
01446 void ast_rtp_pt_copy(struct ast_rtp *dest, struct ast_rtp *src)
01447 {
01448 unsigned int i;
01449
01450 ast_mutex_lock(&dest->bridge_lock);
01451 ast_mutex_lock(&src->bridge_lock);
01452
01453 for (i=0; i < MAX_RTP_PT; ++i) {
01454 dest->current_RTP_PT[i].isAstFormat =
01455 src->current_RTP_PT[i].isAstFormat;
01456 dest->current_RTP_PT[i].code =
01457 src->current_RTP_PT[i].code;
01458 }
01459 dest->rtp_lookup_code_cache_isAstFormat = 0;
01460 dest->rtp_lookup_code_cache_code = 0;
01461 dest->rtp_lookup_code_cache_result = 0;
01462
01463 ast_mutex_unlock(&src->bridge_lock);
01464 ast_mutex_unlock(&dest->bridge_lock);
01465 }
01466
01467
01468 static struct ast_rtp_protocol *get_proto(struct ast_channel *chan)
01469 {
01470 struct ast_rtp_protocol *cur = NULL;
01471
01472 AST_LIST_LOCK(&protos);
01473 AST_LIST_TRAVERSE(&protos, cur, list) {
01474 if (cur->type == chan->tech->type)
01475 break;
01476 }
01477 AST_LIST_UNLOCK(&protos);
01478
01479 return cur;
01480 }
01481
01482 int ast_rtp_early_bridge(struct ast_channel *dest, struct ast_channel *src)
01483 {
01484 struct ast_rtp *destp = NULL, *srcp = NULL;
01485 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01486 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01487 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01488 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01489 int srccodec, destcodec, nat_active = 0;
01490
01491
01492 ast_channel_lock(dest);
01493 if (src) {
01494 while(ast_channel_trylock(src)) {
01495 ast_channel_unlock(dest);
01496 usleep(1);
01497 ast_channel_lock(dest);
01498 }
01499 }
01500
01501
01502 destpr = get_proto(dest);
01503 if (src)
01504 srcpr = get_proto(src);
01505 if (!destpr) {
01506 if (option_debug)
01507 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01508 ast_channel_unlock(dest);
01509 if (src)
01510 ast_channel_unlock(src);
01511 return 0;
01512 }
01513 if (!srcpr) {
01514 if (option_debug)
01515 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src ? src->name : "<unspecified>");
01516 ast_channel_unlock(dest);
01517 if (src)
01518 ast_channel_unlock(src);
01519 return 0;
01520 }
01521
01522
01523 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01524 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01525 if (srcpr) {
01526 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01527 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01528 }
01529
01530
01531 if (audio_dest_res != AST_RTP_TRY_NATIVE) {
01532
01533 ast_channel_unlock(dest);
01534 if (src)
01535 ast_channel_unlock(src);
01536 return 0;
01537 }
01538 if (audio_src_res == AST_RTP_TRY_NATIVE && srcpr->get_codec)
01539 srccodec = srcpr->get_codec(src);
01540 else
01541 srccodec = 0;
01542 if (audio_dest_res == AST_RTP_TRY_NATIVE && destpr->get_codec)
01543 destcodec = destpr->get_codec(dest);
01544 else
01545 destcodec = 0;
01546
01547 if (!(srccodec & destcodec)) {
01548 ast_channel_unlock(dest);
01549 if (src)
01550 ast_channel_unlock(src);
01551 return 0;
01552 }
01553
01554 if (audio_src_res == AST_RTP_TRY_NATIVE && !srcp->them.sin_addr.s_addr)
01555 srcp = NULL;
01556
01557 if (srcp && (srcp->nat || ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01558 nat_active = 1;
01559
01560 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, nat_active))
01561 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src ? src->name : "<unspecified>");
01562 ast_channel_unlock(dest);
01563 if (src)
01564 ast_channel_unlock(src);
01565 if (option_debug)
01566 ast_log(LOG_DEBUG, "Setting early bridge SDP of '%s' with that of '%s'\n", dest->name, src ? src->name : "<unspecified>");
01567 return 1;
01568 }
01569
01570 int ast_rtp_make_compatible(struct ast_channel *dest, struct ast_channel *src, int media)
01571 {
01572 struct ast_rtp *destp = NULL, *srcp = NULL;
01573 struct ast_rtp *vdestp = NULL, *vsrcp = NULL;
01574 struct ast_rtp_protocol *destpr = NULL, *srcpr = NULL;
01575 enum ast_rtp_get_result audio_dest_res = AST_RTP_GET_FAILED, video_dest_res = AST_RTP_GET_FAILED;
01576 enum ast_rtp_get_result audio_src_res = AST_RTP_GET_FAILED, video_src_res = AST_RTP_GET_FAILED;
01577 int srccodec, destcodec;
01578
01579
01580 ast_channel_lock(dest);
01581 while(ast_channel_trylock(src)) {
01582 ast_channel_unlock(dest);
01583 usleep(1);
01584 ast_channel_lock(dest);
01585 }
01586
01587
01588 if (!(destpr = get_proto(dest))) {
01589 if (option_debug)
01590 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", dest->name);
01591 ast_channel_unlock(dest);
01592 ast_channel_unlock(src);
01593 return 0;
01594 }
01595 if (!(srcpr = get_proto(src))) {
01596 if (option_debug)
01597 ast_log(LOG_DEBUG, "Channel '%s' has no RTP, not doing anything\n", src->name);
01598 ast_channel_unlock(dest);
01599 ast_channel_unlock(src);
01600 return 0;
01601 }
01602
01603
01604 audio_dest_res = destpr->get_rtp_info(dest, &destp);
01605 video_dest_res = destpr->get_vrtp_info ? destpr->get_vrtp_info(dest, &vdestp) : AST_RTP_GET_FAILED;
01606 audio_src_res = srcpr->get_rtp_info(src, &srcp);
01607 video_src_res = srcpr->get_vrtp_info ? srcpr->get_vrtp_info(src, &vsrcp) : AST_RTP_GET_FAILED;
01608
01609
01610 if (srcpr->get_codec)
01611 srccodec = srcpr->get_codec(src);
01612 else
01613 srccodec = 0;
01614 if (destpr->get_codec)
01615 destcodec = destpr->get_codec(dest);
01616 else
01617 destcodec = 0;
01618
01619
01620 if (audio_dest_res != AST_RTP_TRY_NATIVE || audio_src_res != AST_RTP_TRY_NATIVE || !(srccodec & destcodec)) {
01621
01622 ast_channel_unlock(dest);
01623 ast_channel_unlock(src);
01624 return 0;
01625 }
01626 ast_rtp_pt_copy(destp, srcp);
01627 if (vdestp && vsrcp)
01628 ast_rtp_pt_copy(vdestp, vsrcp);
01629 if (media) {
01630
01631 if (destpr->set_rtp_peer(dest, srcp, vsrcp, srccodec, ast_test_flag(srcp, FLAG_NAT_ACTIVE)))
01632 ast_log(LOG_WARNING, "Channel '%s' failed to setup early bridge to '%s'\n", dest->name, src->name);
01633 }
01634 ast_channel_unlock(dest);
01635 ast_channel_unlock(src);
01636 if (option_debug)
01637 ast_log(LOG_DEBUG, "Seeded SDP of '%s' with that of '%s'\n", dest->name, src->name);
01638 return 1;
01639 }
01640
01641
01642
01643
01644
01645 void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt)
01646 {
01647 if (pt < 0 || pt > MAX_RTP_PT || static_RTP_PT[pt].code == 0)
01648 return;
01649
01650 ast_mutex_lock(&rtp->bridge_lock);
01651 rtp->current_RTP_PT[pt] = static_RTP_PT[pt];
01652 ast_mutex_unlock(&rtp->bridge_lock);
01653 }
01654
01655
01656
01657
01658 void ast_rtp_set_rtpmap_type(struct ast_rtp *rtp, int pt,
01659 char *mimeType, char *mimeSubtype,
01660 enum ast_rtp_options options)
01661 {
01662 unsigned int i;
01663
01664 if (pt < 0 || pt > MAX_RTP_PT)
01665 return;
01666
01667 ast_mutex_lock(&rtp->bridge_lock);
01668
01669 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01670 if (strcasecmp(mimeSubtype, mimeTypes[i].subtype) == 0 &&
01671 strcasecmp(mimeType, mimeTypes[i].type) == 0) {
01672 rtp->current_RTP_PT[pt] = mimeTypes[i].payloadType;
01673 if ((mimeTypes[i].payloadType.code == AST_FORMAT_G726) &&
01674 mimeTypes[i].payloadType.isAstFormat &&
01675 (options & AST_RTP_OPT_G726_NONSTANDARD))
01676 rtp->current_RTP_PT[pt].code = AST_FORMAT_G726_AAL2;
01677 break;
01678 }
01679 }
01680
01681 ast_mutex_unlock(&rtp->bridge_lock);
01682
01683 return;
01684 }
01685
01686
01687
01688 void ast_rtp_get_current_formats(struct ast_rtp* rtp,
01689 int* astFormats, int* nonAstFormats)
01690 {
01691 int pt;
01692
01693 ast_mutex_lock(&rtp->bridge_lock);
01694
01695 *astFormats = *nonAstFormats = 0;
01696 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01697 if (rtp->current_RTP_PT[pt].isAstFormat) {
01698 *astFormats |= rtp->current_RTP_PT[pt].code;
01699 } else {
01700 *nonAstFormats |= rtp->current_RTP_PT[pt].code;
01701 }
01702 }
01703
01704 ast_mutex_unlock(&rtp->bridge_lock);
01705
01706 return;
01707 }
01708
01709 struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt)
01710 {
01711 struct rtpPayloadType result;
01712
01713 result.isAstFormat = result.code = 0;
01714
01715 if (pt < 0 || pt > MAX_RTP_PT)
01716 return result;
01717
01718
01719 ast_mutex_lock(&rtp->bridge_lock);
01720 result = rtp->current_RTP_PT[pt];
01721 ast_mutex_unlock(&rtp->bridge_lock);
01722
01723
01724 if (!result.code)
01725 result = static_RTP_PT[pt];
01726
01727 return result;
01728 }
01729
01730
01731 int ast_rtp_lookup_code(struct ast_rtp* rtp, const int isAstFormat, const int code)
01732 {
01733 int pt = 0;
01734
01735 ast_mutex_lock(&rtp->bridge_lock);
01736
01737 if (isAstFormat == rtp->rtp_lookup_code_cache_isAstFormat &&
01738 code == rtp->rtp_lookup_code_cache_code) {
01739
01740 pt = rtp->rtp_lookup_code_cache_result;
01741 ast_mutex_unlock(&rtp->bridge_lock);
01742 return pt;
01743 }
01744
01745
01746 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01747 if (rtp->current_RTP_PT[pt].code == code && rtp->current_RTP_PT[pt].isAstFormat == isAstFormat) {
01748 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01749 rtp->rtp_lookup_code_cache_code = code;
01750 rtp->rtp_lookup_code_cache_result = pt;
01751 ast_mutex_unlock(&rtp->bridge_lock);
01752 return pt;
01753 }
01754 }
01755
01756
01757 for (pt = 0; pt < MAX_RTP_PT; ++pt) {
01758 if (static_RTP_PT[pt].code == code && static_RTP_PT[pt].isAstFormat == isAstFormat) {
01759 rtp->rtp_lookup_code_cache_isAstFormat = isAstFormat;
01760 rtp->rtp_lookup_code_cache_code = code;
01761 rtp->rtp_lookup_code_cache_result = pt;
01762 ast_mutex_unlock(&rtp->bridge_lock);
01763 return pt;
01764 }
01765 }
01766
01767 ast_mutex_unlock(&rtp->bridge_lock);
01768
01769 return -1;
01770 }
01771
01772 const char *ast_rtp_lookup_mime_subtype(const int isAstFormat, const int code,
01773 enum ast_rtp_options options)
01774 {
01775 unsigned int i;
01776
01777 for (i = 0; i < sizeof(mimeTypes)/sizeof(mimeTypes[0]); ++i) {
01778 if ((mimeTypes[i].payloadType.code == code) && (mimeTypes[i].payloadType.isAstFormat == isAstFormat)) {
01779 if (isAstFormat &&
01780 (code == AST_FORMAT_G726_AAL2) &&
01781 (options & AST_RTP_OPT_G726_NONSTANDARD))
01782 return "G726-32";
01783 else
01784 return mimeTypes[i].subtype;
01785 }
01786 }
01787
01788 return "";
01789 }
01790
01791 char *ast_rtp_lookup_mime_multiple(char *buf, size_t size, const int capability,
01792 const int isAstFormat, enum ast_rtp_options options)
01793 {
01794 int format;
01795 unsigned len;
01796 char *end = buf;
01797 char *start = buf;
01798
01799 if (!buf || !size)
01800 return NULL;
01801
01802 snprintf(end, size, "0x%x (", capability);
01803
01804 len = strlen(end);
01805 end += len;
01806 size -= len;
01807 start = end;
01808
01809 for (format = 1; format < AST_RTP_MAX; format <<= 1) {
01810 if (capability & format) {
01811 const char *name = ast_rtp_lookup_mime_subtype(isAstFormat, format, options);
01812
01813 snprintf(end, size, "%s|", name);
01814 len = strlen(end);
01815 end += len;
01816 size -= len;
01817 }
01818 }
01819
01820 if (start == end)
01821 snprintf(start, size, "nothing)");
01822 else if (size > 1)
01823 *(end -1) = ')';
01824
01825 return buf;
01826 }
01827
01828 static int rtp_socket(void)
01829 {
01830 int s;
01831 long flags;
01832 s = socket(AF_INET, SOCK_DGRAM, 0);
01833 if (s > -1) {
01834 flags = fcntl(s, F_GETFL);
01835 fcntl(s, F_SETFL, flags | O_NONBLOCK);
01836 #ifdef SO_NO_CHECK
01837 if (nochecksums)
01838 setsockopt(s, SOL_SOCKET, SO_NO_CHECK, &nochecksums, sizeof(nochecksums));
01839 #endif
01840 }
01841 return s;
01842 }
01843
01844
01845
01846
01847
01848
01849 static struct ast_rtcp *ast_rtcp_new(void)
01850 {
01851 struct ast_rtcp *rtcp;
01852
01853 if (!(rtcp = ast_calloc(1, sizeof(*rtcp))))
01854 return NULL;
01855 rtcp->s = rtp_socket();
01856 rtcp->us.sin_family = AF_INET;
01857 rtcp->them.sin_family = AF_INET;
01858
01859 if (rtcp->s < 0) {
01860 free(rtcp);
01861 ast_log(LOG_WARNING, "Unable to allocate RTCP socket: %s\n", strerror(errno));
01862 return NULL;
01863 }
01864
01865 return rtcp;
01866 }
01867
01868
01869
01870
01871
01872 void ast_rtp_new_init(struct ast_rtp *rtp)
01873 {
01874 ast_mutex_init(&rtp->bridge_lock);
01875
01876 rtp->them.sin_family = AF_INET;
01877 rtp->us.sin_family = AF_INET;
01878 rtp->ssrc = ast_random();
01879 rtp->seqno = ast_random() & 0xffff;
01880 ast_set_flag(rtp, FLAG_HAS_DTMF);
01881
01882 return;
01883 }
01884
01885 struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr addr)
01886 {
01887 struct ast_rtp *rtp;
01888 int x;
01889 int first;
01890 int startplace;
01891
01892 if (!(rtp = ast_calloc(1, sizeof(*rtp))))
01893 return NULL;
01894
01895 ast_rtp_new_init(rtp);
01896
01897 rtp->s = rtp_socket();
01898 if (rtp->s < 0) {
01899 free(rtp);
01900 ast_log(LOG_ERROR, "Unable to allocate socket: %s\n", strerror(errno));
01901 return NULL;
01902 }
01903 if (sched && rtcpenable) {
01904 rtp->sched = sched;
01905 rtp->rtcp = ast_rtcp_new();
01906 }
01907
01908
01909 x = (ast_random() % (rtpend-rtpstart)) + rtpstart;
01910 x = x & ~1;
01911
01912 startplace = x;
01913
01914 for (;;) {
01915
01916 rtp->us.sin_port = htons(x);
01917 rtp->us.sin_addr = addr;
01918
01919 if (rtp->rtcp) {
01920 rtp->rtcp->us.sin_port = htons(x + 1);
01921 rtp->rtcp->us.sin_addr = addr;
01922 }
01923
01924 if (!(first = bind(rtp->s, (struct sockaddr *)&rtp->us, sizeof(rtp->us))) &&
01925 (!rtp->rtcp || !bind(rtp->rtcp->s, (struct sockaddr *)&rtp->rtcp->us, sizeof(rtp->rtcp->us))))
01926 break;
01927 if (!first) {
01928
01929 close(rtp->s);
01930 rtp->s = rtp_socket();
01931 }
01932 if (errno != EADDRINUSE) {
01933
01934 ast_log(LOG_ERROR, "Unexpected bind error: %s\n", strerror(errno));
01935 close(rtp->s);
01936 if (rtp->rtcp) {
01937 close(rtp->rtcp->s);
01938 free(rtp->rtcp);
01939 }
01940 free(rtp);
01941 return NULL;
01942 }
01943
01944 x += 2;
01945
01946 if (x > rtpend)
01947
01948 x = (rtpstart + 1) & ~1;
01949
01950 if (x == startplace) {
01951
01952 ast_log(LOG_ERROR, "No RTP ports remaining. Can't setup media stream for this call.\n");
01953 close(rtp->s);
01954 if (rtp->rtcp) {
01955 close(rtp->rtcp->s);
01956 free(rtp->rtcp);
01957 }
01958 free(rtp);
01959 return NULL;
01960 }
01961 }
01962 rtp->sched = sched;
01963 rtp->io = io;
01964 if (callbackmode) {
01965 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
01966 ast_set_flag(rtp, FLAG_CALLBACK_MODE);
01967 }
01968 ast_rtp_pt_default(rtp);
01969 return rtp;
01970 }
01971
01972 struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
01973 {
01974 struct in_addr ia;
01975
01976 memset(&ia, 0, sizeof(ia));
01977 return ast_rtp_new_with_bindaddr(sched, io, rtcpenable, callbackmode, ia);
01978 }
01979
01980 int ast_rtp_settos(struct ast_rtp *rtp, int tos)
01981 {
01982 int res;
01983
01984 if ((res = setsockopt(rtp->s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos))))
01985 ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
01986 return res;
01987 }
01988
01989 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
01990 {
01991 rtp->them.sin_port = them->sin_port;
01992 rtp->them.sin_addr = them->sin_addr;
01993 if (rtp->rtcp) {
01994 rtp->rtcp->them.sin_port = htons(ntohs(them->sin_port) + 1);
01995 rtp->rtcp->them.sin_addr = them->sin_addr;
01996 }
01997 rtp->rxseqno = 0;
01998 }
01999
02000 int ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them)
02001 {
02002 if ((them->sin_family != AF_INET) ||
02003 (them->sin_port != rtp->them.sin_port) ||
02004 (them->sin_addr.s_addr != rtp->them.sin_addr.s_addr)) {
02005 them->sin_family = AF_INET;
02006 them->sin_port = rtp->them.sin_port;
02007 them->sin_addr = rtp->them.sin_addr;
02008 return 1;
02009 }
02010 return 0;
02011 }
02012
02013 void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us)
02014 {
02015 *us = rtp->us;
02016 }
02017
02018 struct ast_rtp *ast_rtp_get_bridged(struct ast_rtp *rtp)
02019 {
02020 struct ast_rtp *bridged = NULL;
02021
02022 ast_mutex_lock(&rtp->bridge_lock);
02023 bridged = rtp->bridged;
02024 ast_mutex_unlock(&rtp->bridge_lock);
02025
02026 return bridged;
02027 }
02028
02029 void ast_rtp_stop(struct ast_rtp *rtp)
02030 {
02031 if (rtp->rtcp && rtp->rtcp->schedid > 0) {
02032 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02033 rtp->rtcp->schedid = -1;
02034 }
02035
02036 memset(&rtp->them.sin_addr, 0, sizeof(rtp->them.sin_addr));
02037 memset(&rtp->them.sin_port, 0, sizeof(rtp->them.sin_port));
02038 if (rtp->rtcp) {
02039 memset(&rtp->rtcp->them.sin_addr, 0, sizeof(rtp->rtcp->them.sin_addr));
02040 memset(&rtp->rtcp->them.sin_port, 0, sizeof(rtp->rtcp->them.sin_port));
02041 }
02042
02043 ast_clear_flag(rtp, FLAG_P2P_SENT_MARK);
02044 }
02045
02046 void ast_rtp_reset(struct ast_rtp *rtp)
02047 {
02048 memset(&rtp->rxcore, 0, sizeof(rtp->rxcore));
02049 memset(&rtp->txcore, 0, sizeof(rtp->txcore));
02050 memset(&rtp->dtmfmute, 0, sizeof(rtp->dtmfmute));
02051 rtp->lastts = 0;
02052 rtp->lastdigitts = 0;
02053 rtp->lastrxts = 0;
02054 rtp->lastividtimestamp = 0;
02055 rtp->lastovidtimestamp = 0;
02056 rtp->lasteventseqn = 0;
02057 rtp->lastevent = 0;
02058 rtp->lasttxformat = 0;
02059 rtp->lastrxformat = 0;
02060 rtp->dtmfcount = 0;
02061 rtp->dtmfsamples = 0;
02062 rtp->seqno = 0;
02063 rtp->rxseqno = 0;
02064 }
02065
02066 char *ast_rtp_get_quality(struct ast_rtp *rtp, struct ast_rtp_quality *qual)
02067 {
02068
02069
02070
02071
02072
02073
02074
02075
02076
02077
02078
02079
02080 if (qual) {
02081 qual->local_ssrc = rtp->ssrc;
02082 qual->local_lostpackets = rtp->rtcp->expected_prior - rtp->rtcp->received_prior;
02083 qual->local_jitter = rtp->rxjitter;
02084 qual->local_count = rtp->rxcount;
02085 qual->remote_ssrc = rtp->themssrc;
02086 qual->remote_lostpackets = rtp->rtcp->reported_lost;
02087 qual->remote_jitter = rtp->rtcp->reported_jitter / 65536.0;
02088 qual->remote_count = rtp->txcount;
02089 qual->rtt = rtp->rtcp->rtt;
02090 }
02091 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);
02092
02093 return rtp->rtcp->quality;
02094 }
02095
02096 void ast_rtp_destroy(struct ast_rtp *rtp)
02097 {
02098 if (rtcp_debug_test_addr(&rtp->them) || rtcpstats) {
02099
02100 ast_verbose(" RTP-stats\n");
02101 ast_verbose("* Our Receiver:\n");
02102 ast_verbose(" SSRC: %u\n", rtp->themssrc);
02103 ast_verbose(" Received packets: %u\n", rtp->rxcount);
02104 ast_verbose(" Lost packets: %u\n", rtp->rtcp->expected_prior - rtp->rtcp->received_prior);
02105 ast_verbose(" Jitter: %.4f\n", rtp->rxjitter);
02106 ast_verbose(" Transit: %.4f\n", rtp->rxtransit);
02107 ast_verbose(" RR-count: %u\n", rtp->rtcp->rr_count);
02108 ast_verbose("* Our Sender:\n");
02109 ast_verbose(" SSRC: %u\n", rtp->ssrc);
02110 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02111 ast_verbose(" Lost packets: %u\n", rtp->rtcp->reported_lost);
02112 ast_verbose(" Jitter: %u\n", rtp->rtcp->reported_jitter);
02113 ast_verbose(" SR-count: %u\n", rtp->rtcp->sr_count);
02114 ast_verbose(" RTT: %f\n", rtp->rtcp->rtt);
02115 }
02116
02117 if (rtp->smoother)
02118 ast_smoother_free(rtp->smoother);
02119 if (rtp->ioid)
02120 ast_io_remove(rtp->io, rtp->ioid);
02121 if (rtp->s > -1)
02122 close(rtp->s);
02123 if (rtp->rtcp) {
02124 if (rtp->rtcp->schedid > 0)
02125 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02126 close(rtp->rtcp->s);
02127 free(rtp->rtcp);
02128 rtp->rtcp=NULL;
02129 }
02130
02131 ast_mutex_destroy(&rtp->bridge_lock);
02132
02133 free(rtp);
02134 }
02135
02136 static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
02137 {
02138 struct timeval t;
02139 long ms;
02140 if (ast_tvzero(rtp->txcore)) {
02141 rtp->txcore = ast_tvnow();
02142
02143 rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
02144 }
02145
02146 t = (delivery && !ast_tvzero(*delivery)) ? *delivery : ast_tvnow();
02147 ms = ast_tvdiff_ms(t, rtp->txcore);
02148 if (ms < 0)
02149 ms = 0;
02150
02151 rtp->txcore = t;
02152 return (unsigned int) ms;
02153 }
02154
02155
02156 int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
02157 {
02158 unsigned int *rtpheader;
02159 int hdrlen = 12, res = 0, i = 0, payload = 0;
02160 char data[256];
02161
02162 if ((digit <= '9') && (digit >= '0'))
02163 digit -= '0';
02164 else if (digit == '*')
02165 digit = 10;
02166 else if (digit == '#')
02167 digit = 11;
02168 else if ((digit >= 'A') && (digit <= 'D'))
02169 digit = digit - 'A' + 12;
02170 else if ((digit >= 'a') && (digit <= 'd'))
02171 digit = digit - 'a' + 12;
02172 else {
02173 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02174 return 0;
02175 }
02176
02177
02178 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02179 return 0;
02180
02181 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_DTMF);
02182
02183 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02184 rtp->send_duration = 160;
02185
02186
02187 rtpheader = (unsigned int *)data;
02188 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno));
02189 rtpheader[1] = htonl(rtp->lastdigitts);
02190 rtpheader[2] = htonl(rtp->ssrc);
02191
02192 for (i = 0; i < 2; i++) {
02193 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02194 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02195 if (res < 0)
02196 ast_log(LOG_ERROR, "RTP Transmission error to %s:%u: %s\n",
02197 ast_inet_ntoa(rtp->them.sin_addr),
02198 ntohs(rtp->them.sin_port), strerror(errno));
02199 if (rtp_debug_test_addr(&rtp->them))
02200 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02201 ast_inet_ntoa(rtp->them.sin_addr),
02202 ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02203
02204 rtp->seqno++;
02205
02206 rtp->send_duration += 160;
02207
02208 rtpheader[0] = htonl((2 << 30) | (payload << 16) | (rtp->seqno));
02209 }
02210
02211
02212 rtp->sending_digit = 1;
02213 rtp->send_digit = digit;
02214 rtp->send_payload = payload;
02215
02216 return 0;
02217 }
02218
02219
02220 static int ast_rtp_senddigit_continuation(struct ast_rtp *rtp)
02221 {
02222 unsigned int *rtpheader;
02223 int hdrlen = 12, res = 0;
02224 char data[256];
02225
02226 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02227 return 0;
02228
02229
02230 rtpheader = (unsigned int *)data;
02231 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02232 rtpheader[1] = htonl(rtp->lastdigitts);
02233 rtpheader[2] = htonl(rtp->ssrc);
02234 rtpheader[3] = htonl((rtp->send_digit << 24) | (0xa << 16) | (rtp->send_duration));
02235 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02236
02237
02238 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02239 if (res < 0)
02240 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02241 ast_inet_ntoa(rtp->them.sin_addr),
02242 ntohs(rtp->them.sin_port), strerror(errno));
02243 if (rtp_debug_test_addr(&rtp->them))
02244 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02245 ast_inet_ntoa(rtp->them.sin_addr),
02246 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02247
02248
02249 rtp->seqno++;
02250
02251 rtp->send_duration += 160;
02252
02253 return 0;
02254 }
02255
02256
02257 int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
02258 {
02259 unsigned int *rtpheader;
02260 int hdrlen = 12, res = 0, i = 0;
02261 char data[256];
02262
02263
02264 if (!rtp->them.sin_addr.s_addr || !rtp->them.sin_port)
02265 return 0;
02266
02267 if ((digit <= '9') && (digit >= '0'))
02268 digit -= '0';
02269 else if (digit == '*')
02270 digit = 10;
02271 else if (digit == '#')
02272 digit = 11;
02273 else if ((digit >= 'A') && (digit <= 'D'))
02274 digit = digit - 'A' + 12;
02275 else if ((digit >= 'a') && (digit <= 'd'))
02276 digit = digit - 'a' + 12;
02277 else {
02278 ast_log(LOG_WARNING, "Don't know how to represent '%c'\n", digit);
02279 return 0;
02280 }
02281
02282 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02283
02284 rtpheader = (unsigned int *)data;
02285 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (rtp->send_payload << 16) | (rtp->seqno));
02286 rtpheader[1] = htonl(rtp->lastdigitts);
02287 rtpheader[2] = htonl(rtp->ssrc);
02288 rtpheader[3] = htonl((digit << 24) | (0xa << 16) | (rtp->send_duration));
02289
02290 rtpheader[3] |= htonl((1 << 23));
02291 rtpheader[0] = htonl((2 << 30) | (rtp->send_payload << 16) | (rtp->seqno));
02292
02293 for (i = 0; i < 3; i++) {
02294 res = sendto(rtp->s, (void *) rtpheader, hdrlen + 4, 0, (struct sockaddr *) &rtp->them, sizeof(rtp->them));
02295 if (res < 0)
02296 ast_log(LOG_ERROR, "RTP Transmission error to %s:%d: %s\n",
02297 ast_inet_ntoa(rtp->them.sin_addr),
02298 ntohs(rtp->them.sin_port), strerror(errno));
02299 if (rtp_debug_test_addr(&rtp->them))
02300 ast_verbose("Sent RTP DTMF packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02301 ast_inet_ntoa(rtp->them.sin_addr),
02302 ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
02303 }
02304 rtp->sending_digit = 0;
02305 rtp->send_digit = 0;
02306
02307 rtp->lastdigitts += 960;
02308 rtp->seqno++;
02309
02310 return res;
02311 }
02312
02313
02314 int ast_rtcp_send_h261fur(void *data)
02315 {
02316 struct ast_rtp *rtp = data;
02317 int res;
02318
02319 rtp->rtcp->sendfur = 1;
02320 res = ast_rtcp_write(data);
02321
02322 return res;
02323 }
02324
02325
02326 static int ast_rtcp_write_sr(void *data)
02327 {
02328 struct ast_rtp *rtp = data;
02329 int res;
02330 int len = 0;
02331 struct timeval now;
02332 unsigned int now_lsw;
02333 unsigned int now_msw;
02334 unsigned int *rtcpheader;
02335 unsigned int lost;
02336 unsigned int extended;
02337 unsigned int expected;
02338 unsigned int expected_interval;
02339 unsigned int received_interval;
02340 int lost_interval;
02341 int fraction;
02342 struct timeval dlsr;
02343 char bdata[512];
02344
02345
02346 if (!rtp || !rtp->rtcp)
02347 return 0;
02348
02349 if (!rtp->rtcp->them.sin_addr.s_addr) {
02350 ast_verbose("RTCP SR transmission error, rtcp halted\n");
02351 if (rtp->rtcp->schedid > 0)
02352 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02353 rtp->rtcp->schedid = -1;
02354 return 0;
02355 }
02356
02357 gettimeofday(&now, NULL);
02358 timeval2ntp(now, &now_msw, &now_lsw);
02359 rtcpheader = (unsigned int *)bdata;
02360 rtcpheader[1] = htonl(rtp->ssrc);
02361 rtcpheader[2] = htonl(now_msw);
02362 rtcpheader[3] = htonl(now_lsw);
02363 rtcpheader[4] = htonl(rtp->lastts);
02364 rtcpheader[5] = htonl(rtp->txcount);
02365 rtcpheader[6] = htonl(rtp->txoctetcount);
02366 len += 28;
02367
02368 extended = rtp->cycles + rtp->lastrxseqno;
02369 expected = extended - rtp->seedrxseqno + 1;
02370 if (rtp->rxcount > expected)
02371 expected += rtp->rxcount - expected;
02372 lost = expected - rtp->rxcount;
02373 expected_interval = expected - rtp->rtcp->expected_prior;
02374 rtp->rtcp->expected_prior = expected;
02375 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02376 rtp->rtcp->received_prior = rtp->rxcount;
02377 lost_interval = expected_interval - received_interval;
02378 if (expected_interval == 0 || lost_interval <= 0)
02379 fraction = 0;
02380 else
02381 fraction = (lost_interval << 8) / expected_interval;
02382 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02383 rtcpheader[7] = htonl(rtp->themssrc);
02384 rtcpheader[8] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02385 rtcpheader[9] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02386 rtcpheader[10] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02387 rtcpheader[11] = htonl(rtp->rtcp->themrxlsr);
02388 rtcpheader[12] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02389 len += 24;
02390
02391 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SR << 16) | ((len/4)-1));
02392
02393 if (rtp->rtcp->sendfur) {
02394 rtcpheader[13] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02395 rtcpheader[14] = htonl(rtp->ssrc);
02396 len += 8;
02397 rtp->rtcp->sendfur = 0;
02398 }
02399
02400
02401
02402 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02403 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02404 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02405 len += 12;
02406
02407 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02408 if (res < 0) {
02409 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));
02410 if (rtp->rtcp->schedid > 0)
02411 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02412 rtp->rtcp->schedid = -1;
02413 return 0;
02414 }
02415
02416
02417 gettimeofday(&rtp->rtcp->txlsr, NULL);
02418 rtp->rtcp->sr_count++;
02419
02420 rtp->rtcp->lastsrtxcount = rtp->txcount;
02421
02422 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02423 ast_verbose("* Sent RTCP SR to %s:%d\n", ast_inet_ntoa(rtp->rtcp->them.sin_addr), ntohs(rtp->rtcp->them.sin_port));
02424 ast_verbose(" Our SSRC: %u\n", rtp->ssrc);
02425 ast_verbose(" Sent(NTP): %u.%010u\n", (unsigned int)now.tv_sec, (unsigned int)now.tv_usec*4096);
02426 ast_verbose(" Sent(RTP): %u\n", rtp->lastts);
02427 ast_verbose(" Sent packets: %u\n", rtp->txcount);
02428 ast_verbose(" Sent octets: %u\n", rtp->txoctetcount);
02429 ast_verbose(" Report block:\n");
02430 ast_verbose(" Fraction lost: %u\n", fraction);
02431 ast_verbose(" Cumulative loss: %u\n", lost);
02432 ast_verbose(" IA jitter: %.4f\n", rtp->rxjitter);
02433 ast_verbose(" Their last SR: %u\n", rtp->rtcp->themrxlsr);
02434 ast_verbose(" DLSR: %4.4f (sec)\n\n", (double)(ntohl(rtcpheader[12])/65536.0));
02435 }
02436 return res;
02437 }
02438
02439
02440 static int ast_rtcp_write_rr(void *data)
02441 {
02442 struct ast_rtp *rtp = data;
02443 int res;
02444 int len = 32;
02445 unsigned int lost;
02446 unsigned int extended;
02447 unsigned int expected;
02448 unsigned int expected_interval;
02449 unsigned int received_interval;
02450 int lost_interval;
02451 struct timeval now;
02452 unsigned int *rtcpheader;
02453 char bdata[1024];
02454 struct timeval dlsr;
02455 int fraction;
02456
02457 if (!rtp || !rtp->rtcp || (&rtp->rtcp->them.sin_addr == 0))
02458 return 0;
02459
02460 if (!rtp->rtcp->them.sin_addr.s_addr) {
02461 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted\n");
02462 if (rtp->rtcp->schedid > 0)
02463 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02464 rtp->rtcp->schedid = -1;
02465 return 0;
02466 }
02467
02468 extended = rtp->cycles + rtp->lastrxseqno;
02469 expected = extended - rtp->seedrxseqno + 1;
02470 lost = expected - rtp->rxcount;
02471 expected_interval = expected - rtp->rtcp->expected_prior;
02472 rtp->rtcp->expected_prior = expected;
02473 received_interval = rtp->rxcount - rtp->rtcp->received_prior;
02474 rtp->rtcp->received_prior = rtp->rxcount;
02475 lost_interval = expected_interval - received_interval;
02476 if (expected_interval == 0 || lost_interval <= 0)
02477 fraction = 0;
02478 else
02479 fraction = (lost_interval << 8) / expected_interval;
02480 gettimeofday(&now, NULL);
02481 timersub(&now, &rtp->rtcp->rxlsr, &dlsr);
02482 rtcpheader = (unsigned int *)bdata;
02483 rtcpheader[0] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_RR << 16) | ((len/4)-1));
02484 rtcpheader[1] = htonl(rtp->ssrc);
02485 rtcpheader[2] = htonl(rtp->themssrc);
02486 rtcpheader[3] = htonl(((fraction & 0xff) << 24) | (lost & 0xffffff));
02487 rtcpheader[4] = htonl((rtp->cycles) | ((rtp->lastrxseqno & 0xffff)));
02488 rtcpheader[5] = htonl((unsigned int)(rtp->rxjitter * 65536.));
02489 rtcpheader[6] = htonl(rtp->rtcp->themrxlsr);
02490 rtcpheader[7] = htonl((((dlsr.tv_sec * 1000) + (dlsr.tv_usec / 1000)) * 65536) / 1000);
02491
02492 if (rtp->rtcp->sendfur) {
02493 rtcpheader[8] = htonl((2 << 30) | (0 << 24) | (RTCP_PT_FUR << 16) | 1);
02494 rtcpheader[9] = htonl(rtp->ssrc);
02495 len += 8;
02496 rtp->rtcp->sendfur = 0;
02497 }
02498
02499
02500
02501 rtcpheader[len/4] = htonl((2 << 30) | (1 << 24) | (RTCP_PT_SDES << 16) | 2);
02502 rtcpheader[(len/4)+1] = htonl(rtp->ssrc);
02503 rtcpheader[(len/4)+2] = htonl(0x01 << 24);
02504 len += 12;
02505
02506 res = sendto(rtp->rtcp->s, (unsigned int *)rtcpheader, len, 0, (struct sockaddr *)&rtp->rtcp->them, sizeof(rtp->rtcp->them));
02507
02508 if (res < 0) {
02509 ast_log(LOG_ERROR, "RTCP RR transmission error, rtcp halted: %s\n",strerror(errno));
02510
02511 if (rtp->rtcp->schedid > 0)
02512 ast_sched_del(rtp->sched, rtp->rtcp->schedid);
02513 rtp->rtcp->schedid = -1;
02514 return 0;
02515 }
02516
02517 rtp->rtcp->rr_count++;
02518
02519 if (rtcp_debug_test_addr(&rtp->rtcp->them)) {
02520 ast_verbose("\n* Sending RTCP RR to %s:%d\n"
02521 " Our SSRC: %u\nTheir SSRC: %u\niFraction lost: %d\nCumulative loss: %u\n"
02522 " IA jitter: %.4f\n"
02523 " Their last SR: %u\n"
02524 " DLSR: %4.4f (sec)\n\n",
02525 ast_inet_ntoa(rtp->rtcp->them.sin_addr),
02526 ntohs(rtp->rtcp->them.sin_port),
02527 rtp->ssrc, rtp->themssrc, fraction, lost,
02528 rtp->rxjitter,
02529 rtp->rtcp->themrxlsr,
02530 (double)(ntohl(rtcpheader[7])/65536.0));
02531 }
02532
02533 return res;
02534 }
02535
02536
02537
02538
02539 static int ast_rtcp_write(void *data)
02540 {
02541 struct ast_rtp *rtp = data;
02542 int res;
02543
02544 if (!rtp || !rtp->rtcp)
02545 return 0;
02546
02547 if (rtp->txcount > rtp->rtcp->lastsrtxcount)
02548 res = ast_rtcp_write_sr(data);
02549 else
02550 res = ast_rtcp_write_rr(data);
02551
02552 return res;
02553 }
02554
02555
02556 int ast_rtp_sendcng(struct ast_rtp *rtp, int level)
02557 {
02558 unsigned int *rtpheader;
02559 int hdrlen = 12;
02560 int res;
02561 int payload;
02562 char data[256];
02563 level = 127 - (level & 0x7f);
02564 payload = ast_rtp_lookup_code(rtp, 0, AST_RTP_CN);
02565
02566
02567 if (!rtp->them.sin_addr.s_addr)
02568 return 0;
02569
02570 rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
02571
02572
02573 rtpheader = (unsigned int *)data;
02574 rtpheader[0] = htonl((2 << 30) | (1 << 23) | (payload << 16) | (rtp->seqno++));
02575 rtpheader[1] = htonl(rtp->lastts);
02576 rtpheader[2] = htonl(rtp->ssrc);
02577 data[12] = level;
02578 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02579 res = sendto(rtp->s, (void *)rtpheader, hdrlen + 1, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02580 if (res <0)
02581 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));
02582 if (rtp_debug_test_addr(&rtp->them))
02583 ast_verbose("Sent Comfort Noise RTP packet to %s:%u (type %d, seq %u, ts %u, len %d)\n"
02584 , ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), payload, rtp->seqno, rtp->lastts,res - hdrlen);
02585
02586 }
02587 return 0;
02588 }
02589
02590 static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec)
02591 {
02592 unsigned char *rtpheader;
02593 int hdrlen = 12;
02594 int res;
02595 unsigned int ms;
02596 int pred;
02597 int mark = 0;
02598
02599 ms = calc_txstamp(rtp, &f->delivery);
02600
02601 if (f->subclass < AST_FORMAT_MAX_AUDIO) {
02602 pred = rtp->lastts + f->samples;
02603
02604
02605 rtp->lastts = rtp->lastts + ms * 8;
02606 if (ast_tvzero(f->delivery)) {
02607
02608
02609 if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
02610 rtp->lastts = pred;
02611 else {
02612 if (option_debug > 2)
02613 ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);
02614 mark = 1;
02615 }
02616 }
02617 } else {
02618 mark = f->subclass & 0x1;
02619 pred = rtp->lastovidtimestamp + f->samples;
02620
02621 rtp->lastts = rtp->lastts + ms * 90;
02622
02623 if (ast_tvzero(f->delivery)) {
02624 if (abs(rtp->lastts - pred) < 7200) {
02625 rtp->lastts = pred;
02626 rtp->lastovidtimestamp += f->samples;
02627 } else {
02628 if (option_debug > 2)
02629 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);
02630 rtp->lastovidtimestamp = rtp->lastts;
02631 }
02632 }
02633 }
02634
02635
02636
02637 if (rtp->lastts > rtp->lastdigitts)
02638 rtp->lastdigitts = rtp->lastts;
02639
02640 if (f->has_timing_info)
02641 rtp->lastts = f->ts * 8;
02642
02643
02644 rtpheader = (unsigned char *)(f->data - hdrlen);
02645
02646 put_unaligned_uint32(rtpheader, htonl((2 << 30) | (codec << 16) | (rtp->seqno) | (mark << 23)));
02647 put_unaligned_uint32(rtpheader + 4, htonl(rtp->lastts));
02648 put_unaligned_uint32(rtpheader + 8, htonl(rtp->ssrc));
02649
02650 if (rtp->them.sin_port && rtp->them.sin_addr.s_addr) {
02651 res = sendto(rtp->s, (void *)rtpheader, f->datalen + hdrlen, 0, (struct sockaddr *)&rtp->them, sizeof(rtp->them));
02652 if (res <0) {
02653 if (!rtp->nat || (rtp->nat && (ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_ACTIVE))) {
02654 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));
02655 } else if (((ast_test_flag(rtp, FLAG_NAT_ACTIVE) == FLAG_NAT_INACTIVE) || rtpdebug) && !ast_test_flag(rtp, FLAG_NAT_INACTIVE_NOWARN)) {
02656
02657 if (option_debug || rtpdebug)
02658 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));
02659 ast_set_flag(rtp, FLAG_NAT_INACTIVE_NOWARN);
02660 }
02661 } else {
02662 rtp->txcount++;
02663 rtp->txoctetcount +=(res - hdrlen);
02664
02665 if (rtp->rtcp && rtp->rtcp->schedid < 1)
02666 rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, rtp);
02667 }
02668
02669 if (rtp_debug_test_addr(&rtp->them))
02670 ast_verbose("Sent RTP packet to %s:%u (type %-2.2d, seq %-6.6u, ts %-6.6u, len %-6.6u)\n",
02671 ast_inet_ntoa(rtp->them.sin_addr), ntohs(rtp->them.sin_port), codec, rtp->seqno, rtp->lastts,res - hdrlen);
02672 }
02673
02674 rtp->seqno++;
02675
02676 return 0;
02677 }
02678
02679 int ast_rtp_codec_setpref(struct ast_rtp *rtp, struct ast_codec_pref *prefs)
02680 {
02681 int x;
02682 for (x = 0; x < 32; x++) {
02683 rtp->pref.order[x] = prefs->order[x];
02684 rtp->pref.framing[x] = prefs->framing[x];
02685 }
02686 if (rtp->smoother)
02687 ast_smoother_free(rtp->smoother);
02688 rtp->smoother = NULL;
02689 return 0;
02690 }
02691
02692 struct ast_codec_pref *ast_rtp_codec_getpref(struct ast_rtp *rtp)
02693 {
02694 return &rtp->pref;
02695 }
02696
02697 int ast_rtp_codec_getformat(int pt)
02698 {
02699 if (pt < 0 || pt > MAX_RTP_PT)
02700 return 0;
02701
02702 if (static_RTP_PT[pt].isAstFormat)
02703 return static_RTP_PT[pt].code;
02704 else
02705 return 0;
02706 }
02707
02708 int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f)
02709 {
02710 struct ast_frame *f;
02711 int codec;
02712 int hdrlen = 12;
02713 int subclass;
02714
02715
02716
02717 if (!rtp->them.sin_addr.s_addr)
02718 return 0;
02719
02720
02721 if (!_f->datalen)
02722 return 0;
02723
02724
02725 if ((_f->frametype != AST_FRAME_VOICE) && (_f->frametype != AST_FRAME_VIDEO)) {
02726 ast_log(LOG_WARNING, "RTP can only send voice and video\n");
02727 return -1;
02728 }
02729
02730 subclass = _f->subclass;
02731 if (_f->frametype == AST_FRAME_VIDEO)
02732 subclass &= ~0x1;
02733
02734 codec = ast_rtp_lookup_code(rtp, 1, subclass);
02735 if (codec < 0) {
02736 ast_log(LOG_WARNING, "Don't know how to send format %s packets with RTP\n", ast_getformatname(_f->subclass));
02737 return -1;
02738 }
02739
02740 if (rtp->lasttxformat != subclass) {
02741
02742 if (option_debug)
02743 ast_log(LOG_DEBUG, "Ooh, format changed from %s to %s\n", ast_getformatname(rtp->lasttxformat), ast_getformatname(subclass));
02744 rtp->lasttxformat = subclass;
02745 if (rtp->smoother)
02746 ast_smoother_free(rtp->smoother);
02747 rtp->smoother = NULL;
02748 }
02749
02750 if (!rtp->smoother && subclass != AST_FORMAT_SPEEX) {
02751 struct ast_format_list fmt = ast_codec_pref_getsize(&rtp->pref, subclass);
02752 if (fmt.inc_ms) {
02753 if (!(rtp->smoother = ast_smoother_new((fmt.cur_ms * fmt.fr_len) / fmt.inc_ms))) {
02754 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));
02755 return -1;
02756 }
02757 if (fmt.flags)
02758 ast_smoother_set_flags(rtp->smoother, fmt.flags);
02759 if (option_debug)
02760 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));
02761 }
02762 }
02763 if (rtp->smoother) {
02764 if (ast_smoother_test_flag(rtp->smoother, AST_SMOOTHER_FLAG_BE)) {
02765 ast_smoother_feed_be(rtp->smoother, _f);
02766 } else {
02767 ast_smoother_feed(rtp->smoother, _f);
02768 }
02769
02770 while((f = ast_smoother_read(rtp->smoother)) && (f->data))
02771 ast_rtp_raw_write(rtp, f, codec);
02772 } else {
02773
02774 if (_f->offset < hdrlen) {
02775 f = ast_frdup(_f);
02776 } else {
02777 f = _f;
02778 }
02779 if (f->data)
02780 ast_rtp_raw_write(rtp, f, codec);
02781 if (f != _f)
02782 ast_frfree(f);
02783 }
02784
02785 return 0;
02786 }
02787
02788
02789 void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto)
02790 {
02791 AST_LIST_LOCK(&protos);
02792 AST_LIST_REMOVE(&protos, proto, list);
02793 AST_LIST_UNLOCK(&protos);
02794 }
02795
02796
02797 int ast_rtp_proto_register(struct ast_rtp_protocol *proto)
02798 {
02799 struct ast_rtp_protocol *cur;
02800
02801 AST_LIST_LOCK(&protos);
02802 AST_LIST_TRAVERSE(&protos, cur, list) {
02803 if (!strcmp(cur->type, proto->type)) {
02804 ast_log(LOG_WARNING, "Tried to register same protocol '%s' twice\n", cur->type);
02805 AST_LIST_UNLOCK(&protos);
02806 return -1;
02807 }
02808 }
02809 AST_LIST_INSERT_HEAD(&protos, proto, list);
02810 AST_LIST_UNLOCK(&protos);
02811
02812 return 0;
02813 }
02814
02815
02816 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)
02817 {
02818 struct ast_frame *fr = NULL;
02819 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
02820 int oldcodec0 = codec0, oldcodec1 = codec1;
02821 struct sockaddr_in ac1 = {0,}, vac1 = {0,}, ac0 = {0,}, vac0 = {0,};
02822 struct sockaddr_in t1 = {0,}, vt1 = {0,}, t0 = {0,}, vt0 = {0,};
02823
02824
02825
02826
02827 if (!(pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE)))) {
02828 ast_rtp_get_peer(p1, &ac1);
02829 if (vp1)
02830 ast_rtp_get_peer(vp1, &vac1);
02831 } else
02832 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c0->name, c1->name);
02833
02834
02835 if (!(pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE)))) {
02836 ast_rtp_get_peer(p0, &ac0);
02837 if (vp0)
02838 ast_rtp_get_peer(vp0, &vac0);
02839 } else
02840 ast_log(LOG_WARNING, "Channel '%s' failed to talk to '%s'\n", c1->name, c0->name);
02841
02842
02843 ast_channel_unlock(c0);
02844 ast_channel_unlock(c1);
02845
02846
02847 cs[0] = c0;
02848 cs[1] = c1;
02849 cs[2] = NULL;
02850 for (;;) {
02851
02852 if ((c0->tech_pvt != pvt0) ||
02853 (c1->tech_pvt != pvt1) ||
02854 (c0->masq || c0->masqr || c1->masq || c1->masqr)) {
02855 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
02856 if (c0->tech_pvt == pvt0)
02857 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02858 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02859 if (c1->tech_pvt == pvt1)
02860 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02861 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02862 return AST_BRIDGE_RETRY;
02863 }
02864
02865
02866 ast_rtp_get_peer(p1, &t1);
02867 if (vp1)
02868 ast_rtp_get_peer(vp1, &vt1);
02869 if (pr1->get_codec)
02870 codec1 = pr1->get_codec(c1);
02871 ast_rtp_get_peer(p0, &t0);
02872 if (vp0)
02873 ast_rtp_get_peer(vp0, &vt0);
02874 if (pr0->get_codec)
02875 codec0 = pr0->get_codec(c0);
02876 if ((inaddrcmp(&t1, &ac1)) ||
02877 (vp1 && inaddrcmp(&vt1, &vac1)) ||
02878 (codec1 != oldcodec1)) {
02879 if (option_debug > 1) {
02880 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02881 c1->name, ast_inet_ntoa(t1.sin_addr), ntohs(t1.sin_port), codec1);
02882 ast_log(LOG_DEBUG, "Oooh, '%s' changed end vaddress to %s:%d (format %d)\n",
02883 c1->name, ast_inet_ntoa(vt1.sin_addr), ntohs(vt1.sin_port), codec1);
02884 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02885 c1->name, ast_inet_ntoa(ac1.sin_addr), ntohs(ac1.sin_port), oldcodec1);
02886 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02887 c1->name, ast_inet_ntoa(vac1.sin_addr), ntohs(vac1.sin_port), oldcodec1);
02888 }
02889 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)))
02890 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c0->name, c1->name);
02891 memcpy(&ac1, &t1, sizeof(ac1));
02892 memcpy(&vac1, &vt1, sizeof(vac1));
02893 oldcodec1 = codec1;
02894 }
02895 if ((inaddrcmp(&t0, &ac0)) ||
02896 (vp0 && inaddrcmp(&vt0, &vac0))) {
02897 if (option_debug > 1) {
02898 ast_log(LOG_DEBUG, "Oooh, '%s' changed end address to %s:%d (format %d)\n",
02899 c0->name, ast_inet_ntoa(t0.sin_addr), ntohs(t0.sin_port), codec0);
02900 ast_log(LOG_DEBUG, "Oooh, '%s' was %s:%d/(format %d)\n",
02901 c0->name, ast_inet_ntoa(ac0.sin_addr), ntohs(ac0.sin_port), oldcodec0);
02902 }
02903 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)))
02904 ast_log(LOG_WARNING, "Channel '%s' failed to update to '%s'\n", c1->name, c0->name);
02905 memcpy(&ac0, &t0, sizeof(ac0));
02906 memcpy(&vac0, &vt0, sizeof(vac0));
02907 oldcodec0 = codec0;
02908 }
02909
02910
02911 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
02912 if (!timeoutms) {
02913 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02914 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02915 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02916 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02917 return AST_BRIDGE_RETRY;
02918 }
02919 if (option_debug)
02920 ast_log(LOG_DEBUG, "Ooh, empty read...\n");
02921 if (ast_check_hangup(c0) || ast_check_hangup(c1))
02922 break;
02923 continue;
02924 }
02925 fr = ast_read(who);
02926 other = (who == c0) ? c1 : c0;
02927 if (!fr || ((fr->frametype == AST_FRAME_DTMF) &&
02928 (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
02929 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
02930
02931 *fo = fr;
02932 *rc = who;
02933 if (option_debug)
02934 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
02935 if (c0->tech_pvt == pvt0)
02936 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02937 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02938 if (c1->tech_pvt == pvt1)
02939 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02940 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02941 return AST_BRIDGE_COMPLETE;
02942 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
02943 if ((fr->subclass == AST_CONTROL_HOLD) ||
02944 (fr->subclass == AST_CONTROL_UNHOLD) ||
02945 (fr->subclass == AST_CONTROL_VIDUPDATE)) {
02946 if (fr->subclass == AST_CONTROL_HOLD) {
02947
02948 if (who == c0)
02949 pr1->set_rtp_peer(c1, NULL, NULL, 0, 0);
02950 else
02951 pr0->set_rtp_peer(c0, NULL, NULL, 0, 0);
02952 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
02953
02954 if (who == c0)
02955 pr1->set_rtp_peer(c1, p0, vp0, codec0, ast_test_flag(p0, FLAG_NAT_ACTIVE));
02956 else
02957 pr0->set_rtp_peer(c0, p1, vp1, codec1, ast_test_flag(p1, FLAG_NAT_ACTIVE));
02958 }
02959 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
02960 ast_frfree(fr);
02961 } else {
02962 *fo = fr;
02963 *rc = who;
02964 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
02965 return AST_BRIDGE_COMPLETE;
02966 }
02967 } else {
02968 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
02969 (fr->frametype == AST_FRAME_DTMF) ||
02970 (fr->frametype == AST_FRAME_VOICE) ||
02971 (fr->frametype == AST_FRAME_VIDEO) ||
02972 (fr->frametype == AST_FRAME_IMAGE) ||
02973 (fr->frametype == AST_FRAME_HTML) ||
02974 (fr->frametype == AST_FRAME_MODEM) ||
02975 (fr->frametype == AST_FRAME_TEXT)) {
02976 ast_write(other, fr);
02977 }
02978 ast_frfree(fr);
02979 }
02980
02981 cs[2] = cs[0];
02982 cs[0] = cs[1];
02983 cs[1] = cs[2];
02984 }
02985
02986 if (pr0->set_rtp_peer(c0, NULL, NULL, 0, 0))
02987 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c0->name);
02988 if (pr1->set_rtp_peer(c1, NULL, NULL, 0, 0))
02989 ast_log(LOG_WARNING, "Channel '%s' failed to break RTP bridge\n", c1->name);
02990
02991 return AST_BRIDGE_FAILED;
02992 }
02993
02994
02995 #ifdef P2P_INTENSE
02996 static int p2p_rtp_callback(int *id, int fd, short events, void *cbdata)
02997 {
02998 int res = 0, hdrlen = 12;
02999 struct sockaddr_in sin;
03000 socklen_t len;
03001 unsigned int *header;
03002 struct ast_rtp *rtp = cbdata, *bridged = NULL;
03003
03004 if (!rtp)
03005 return 1;
03006
03007 len = sizeof(sin);
03008 if ((res = recvfrom(fd, rtp->rawdata + AST_FRIENDLY_OFFSET, sizeof(rtp->rawdata) - AST_FRIENDLY_OFFSET, 0, (struct sockaddr *)&sin, &len)) < 0)
03009 return 1;
03010
03011 header = (unsigned int *)(rtp->rawdata + AST_FRIENDLY_OFFSET);
03012
03013
03014 if ((rtp->nat) &&
03015 ((rtp->them.sin_addr.s_addr != sin.sin_addr.s_addr) ||
03016 (rtp->them.sin_port != sin.sin_port))) {
03017 rtp->them = sin;
03018 rtp->rxseqno = 0;
03019 ast_set_flag(rtp, FLAG_NAT_ACTIVE);
03020 if (option_debug || rtpdebug)
03021 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));
03022 }
03023
03024
03025 if ((bridged = ast_rtp_get_bridged(rtp)))
03026 bridge_p2p_rtp_write(rtp, bridged, header, res, hdrlen);
03027
03028 return 1;
03029 }
03030
03031
03032 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03033 {
03034
03035 if (ast_test_flag(rtp, FLAG_P2P_NEED_DTMF) || ast_test_flag(rtp, FLAG_HAS_STUN) || !rtp->io)
03036 return 0;
03037
03038
03039 if (rtp->ioid) {
03040 ast_io_remove(rtp->io, rtp->ioid);
03041 rtp->ioid = NULL;
03042 }
03043
03044
03045 fds[0] = chan->fds[0];
03046 chan->fds[0] = -1;
03047
03048
03049 iod[0] = ast_io_add(rtp->io, fds[0], p2p_rtp_callback, AST_IO_IN, rtp);
03050
03051 return 1;
03052 }
03053 #else
03054 static int p2p_callback_enable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03055 {
03056 return 0;
03057 }
03058 #endif
03059
03060
03061 static int p2p_callback_disable(struct ast_channel *chan, struct ast_rtp *rtp, int *fds, int **iod)
03062 {
03063 ast_channel_lock(chan);
03064
03065
03066 ast_io_remove(rtp->io, iod[0]);
03067
03068
03069 chan->fds[0] = fds[0];
03070 ast_channel_unlock(chan);
03071
03072
03073 if (ast_test_flag(rtp, FLAG_CALLBACK_MODE))
03074 rtp->ioid = ast_io_add(rtp->io, rtp->s, rtpread, AST_IO_IN, rtp);
03075
03076 return 0;
03077 }
03078
03079
03080 static void p2p_set_bridge(struct ast_rtp *rtp0, struct ast_rtp *rtp1)
03081 {
03082 ast_mutex_lock(&rtp0->bridge_lock);
03083 rtp0->bridged = rtp1;
03084 ast_mutex_unlock(&rtp0->bridge_lock);
03085
03086 return;
03087 }
03088
03089
03090 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)
03091 {
03092 struct ast_frame *fr = NULL;
03093 struct ast_channel *who = NULL, *other = NULL, *cs[3] = {NULL, };
03094 int p0_fds[2] = {-1, -1}, p1_fds[2] = {-1, -1};
03095 int *p0_iod[2] = {NULL, NULL}, *p1_iod[2] = {NULL, NULL};
03096 int p0_callback = 0, p1_callback = 0;
03097 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03098
03099
03100 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03101 p2p_set_bridge(p0, p1);
03102 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03103 p2p_set_bridge(p1, p0);
03104
03105
03106 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03107 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03108
03109
03110 ast_channel_unlock(c0);
03111 ast_channel_unlock(c1);
03112
03113
03114 cs[0] = c0;
03115 cs[1] = c1;
03116 cs[2] = NULL;
03117 for (;;) {
03118
03119 if ((c0->tech_pvt != pvt0) ||
03120 (c1->tech_pvt != pvt1) ||
03121 (c0->masq || c0->masqr || c1->masq || c1->masqr)) {
03122 ast_log(LOG_DEBUG, "Oooh, something is weird, backing out\n");
03123 if ((c0->masq || c0->masqr) && (fr = ast_read(c0)))
03124 ast_frfree(fr);
03125 if ((c1->masq || c1->masqr) && (fr = ast_read(c1)))
03126 ast_frfree(fr);
03127 res = AST_BRIDGE_RETRY;
03128 break;
03129 }
03130
03131 if (!(who = ast_waitfor_n(cs, 2, &timeoutms))) {
03132 if (!timeoutms) {
03133 res = AST_BRIDGE_RETRY;
03134 break;
03135 }
03136 if (option_debug)
03137 ast_log(LOG_NOTICE, "Ooh, empty read...\n");
03138 if (ast_check_hangup(c0) || ast_check_hangup(c1))
03139 break;
03140 continue;
03141 }
03142
03143 fr = ast_read(who);
03144 other = (who == c0) ? c1 : c0;
03145
03146 if (!fr || ((fr->frametype == AST_FRAME_DTMF) &&
03147 ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) |
03148 ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)))) {
03149
03150 *fo = fr;
03151 *rc = who;
03152 if (option_debug)
03153 ast_log(LOG_DEBUG, "Oooh, got a %s\n", fr ? "digit" : "hangup");
03154 res = AST_BRIDGE_COMPLETE;
03155 break;
03156 } else if ((fr->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
03157 if ((fr->subclass == AST_CONTROL_HOLD) ||
03158 (fr->subclass == AST_CONTROL_UNHOLD) ||
03159 (fr->subclass == AST_CONTROL_VIDUPDATE)) {
03160
03161 if (fr->subclass == AST_CONTROL_HOLD) {
03162 if (p0_callback)
03163 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03164 if (p1_callback)
03165 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03166 p2p_set_bridge(p0, NULL);
03167 p2p_set_bridge(p1, NULL);
03168 } else if (fr->subclass == AST_CONTROL_UNHOLD) {
03169
03170 ast_clear_flag(p0, FLAG_P2P_SENT_MARK);
03171 p2p_set_bridge(p0, p1);
03172 ast_clear_flag(p1, FLAG_P2P_SENT_MARK);
03173 p2p_set_bridge(p1, p0);
03174 p0_callback = p2p_callback_enable(c0, p0, &p0_fds[0], &p0_iod[0]);
03175 p1_callback = p2p_callback_enable(c1, p1, &p1_fds[0], &p1_iod[0]);
03176 }
03177 ast_indicate_data(other, fr->subclass, fr->data, fr->datalen);
03178 ast_frfree(fr);
03179 } else {
03180 *fo = fr;
03181 *rc = who;
03182 ast_log(LOG_DEBUG, "Got a FRAME_CONTROL (%d) frame on channel %s\n", fr->subclass, who->name);
03183 res = AST_BRIDGE_COMPLETE;
03184 break;
03185 }
03186 } else {
03187 if ((fr->frametype == AST_FRAME_DTMF_BEGIN) ||
03188 (fr->frametype == AST_FRAME_DTMF) ||
03189 (fr->frametype == AST_FRAME_VOICE) ||
03190 (fr->frametype == AST_FRAME_VIDEO) ||
03191 (fr->frametype == AST_FRAME_IMAGE) ||
03192 (fr->frametype == AST_FRAME_HTML) ||
03193 (fr->frametype == AST_FRAME_MODEM) ||
03194 (fr->frametype == AST_FRAME_TEXT)) {
03195 ast_write(other, fr);
03196 }
03197
03198 ast_frfree(fr);
03199 }
03200
03201 cs[2] = cs[0];
03202 cs[0] = cs[1];
03203 cs[1] = cs[2];
03204 }
03205
03206
03207 if (p0_callback)
03208 p0_callback = p2p_callback_disable(c0, p0, &p0_fds[0], &p0_iod[0]);
03209 if (p1_callback)
03210 p1_callback = p2p_callback_disable(c1, p1, &p1_fds[0], &p1_iod[0]);
03211
03212
03213 p2p_set_bridge(p0, NULL);
03214 p2p_set_bridge(p1, NULL);
03215
03216 return res;
03217 }
03218
03219
03220
03221
03222 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)
03223 {
03224 struct ast_rtp *p0 = NULL, *p1 = NULL;
03225 struct ast_rtp *vp0 = NULL, *vp1 = NULL;
03226 struct ast_rtp_protocol *pr0 = NULL, *pr1 = NULL;
03227 enum ast_rtp_get_result audio_p0_res = AST_RTP_GET_FAILED, video_p0_res = AST_RTP_GET_FAILED;
03228 enum ast_rtp_get_result audio_p1_res = AST_RTP_GET_FAILED, video_p1_res = AST_RTP_GET_FAILED;
03229 enum ast_bridge_result res = AST_BRIDGE_FAILED;
03230 int codec0 = 0, codec1 = 0;
03231 void *pvt0 = NULL, *pvt1 = NULL;
03232
03233
03234 ast_channel_lock(c0);
03235 while(ast_channel_trylock(c1)) {
03236 ast_channel_unlock(c0);
03237 usleep(1);
03238 ast_channel_lock(c0);
03239 }
03240
03241
03242 if (!(pr0 = get_proto(c0))) {
03243 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c0->name);
03244 ast_channel_unlock(c0);
03245 ast_channel_unlock(c1);
03246 return AST_BRIDGE_FAILED;
03247 }
03248 if (!(pr1 = get_proto(c1))) {
03249 ast_log(LOG_WARNING, "Can't find native functions for channel '%s'\n", c1->name);
03250 ast_channel_unlock(c0);
03251 ast_channel_unlock(c1);
03252 return AST_BRIDGE_FAILED;
03253 }
03254
03255
03256 pvt0 = c0->tech_pvt;
03257 pvt1 = c1->tech_pvt;
03258
03259
03260 audio_p0_res = pr0->get_rtp_info(c0, &p0);
03261 video_p0_res = pr0->get_vrtp_info ? pr0->get_vrtp_info(c0, &vp0) : AST_RTP_GET_FAILED;
03262 audio_p1_res = pr1->get_rtp_info(c1, &p1);
03263 video_p1_res = pr1->get_vrtp_info ? pr1->get_vrtp_info(c1, &vp1) : AST_RTP_GET_FAILED;
03264
03265
03266 if (video_p0_res != AST_RTP_GET_FAILED && (audio_p0_res != AST_RTP_TRY_NATIVE || video_p0_res != AST_RTP_TRY_NATIVE))
03267 audio_p0_res = AST_RTP_GET_FAILED;
03268 if (video_p1_res != AST_RTP_GET_FAILED && (audio_p1_res != AST_RTP_TRY_NATIVE || video_p1_res != AST_RTP_TRY_NATIVE))
03269 audio_p1_res = AST_RTP_GET_FAILED;
03270
03271
03272 if (audio_p0_res == AST_RTP_GET_FAILED || audio_p1_res == AST_RTP_GET_FAILED) {
03273
03274 ast_channel_unlock(c0);
03275 ast_channel_unlock(c1);
03276 return AST_BRIDGE_FAILED_NOWARN;
03277 }
03278
03279
03280 if (ast_test_flag(p0, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
03281 ast_set_flag(p0, FLAG_P2P_NEED_DTMF);
03282 audio_p0_res = AST_RTP_TRY_PARTIAL;
03283 }
03284
03285 if (ast_test_flag(p1, FLAG_HAS_DTMF) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
03286 ast_set_flag(p1, FLAG_P2P_NEED_DTMF);
03287 audio_p1_res = AST_RTP_TRY_PARTIAL;
03288 }
03289
03290
03291
03292
03293
03294
03295
03296
03297
03298
03299
03300
03301
03302
03303 if ( (ast_test_flag(p0, FLAG_HAS_DTMF) != ast_test_flag(p1, FLAG_HAS_DTMF)) ||
03304 (!c0->tech->send_digit_begin != !c1->tech->send_digit_begin)) {
03305 if (!ast_test_flag(p0, FLAG_P2P_NEED_DTMF) || !ast_test_flag(p1, FLAG_P2P_NEED_DTMF)) {
03306 ast_channel_unlock(c0);
03307 ast_channel_unlock(c1);
03308 return AST_BRIDGE_FAILED_NOWARN;
03309 }
03310 audio_p0_res = AST_RTP_TRY_PARTIAL;
03311 audio_p1_res = AST_RTP_TRY_PARTIAL;
03312 }
03313
03314
03315 if ((audio_p0_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p0, FLAG_P2P_NEED_DTMF) && ast_test_flag(p0, FLAG_DTMF_COMPENSATE)) ||
03316 (audio_p1_res == AST_RTP_TRY_PARTIAL && ast_test_flag(p1, FLAG_P2P_NEED_DTMF) && ast_test_flag(p1, FLAG_DTMF_COMPENSATE))) {
03317 ast_channel_unlock(c0);
03318 ast_channel_unlock(c1);
03319 return AST_BRIDGE_FAILED_NOWARN;
03320 }
03321
03322
03323 codec0 = pr0->get_codec ? pr0->get_codec(c0) : 0;
03324 codec1 = pr1->get_codec ? pr1->get_codec(c1) : 0;
03325 if (codec0 && codec1 && !(codec0 & codec1)) {
03326
03327 if (option_debug)
03328 ast_log(LOG_DEBUG, "Channel codec0 = %d is not codec1 = %d, cannot native bridge in RTP.\n", codec0, codec1);
03329 ast_channel_unlock(c0);
03330 ast_channel_unlock(c1);
03331 return AST_BRIDGE_FAILED_NOWARN;
03332 }
03333
03334
03335 if (audio_p0_res == AST_RTP_TRY_PARTIAL || audio_p1_res == AST_RTP_TRY_PARTIAL) {
03336 struct ast_format_list fmt0, fmt1;
03337
03338
03339 if (c0->rawreadformat != c1->rawwriteformat || c1->rawreadformat != c0->rawwriteformat) {
03340 if (option_debug)
03341 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - raw formats are incompatible\n");
03342 ast_channel_unlock(c0);
03343 ast_channel_unlock(c1);
03344 return AST_BRIDGE_FAILED_NOWARN;
03345 }
03346
03347 fmt0 = ast_codec_pref_getsize(&p0->pref, c0->rawreadformat);
03348 fmt1 = ast_codec_pref_getsize(&p1->pref, c1->rawreadformat);
03349 if (fmt0.cur_ms != fmt1.cur_ms) {
03350 if (option_debug)
03351 ast_log(LOG_DEBUG, "Cannot packet2packet bridge - packetization settings prevent it\n");
03352 ast_channel_unlock(c0);
03353 ast_channel_unlock(c1);
03354 return AST_BRIDGE_FAILED_NOWARN;
03355 }
03356
03357 if (option_verbose > 2)
03358 ast_verbose(VERBOSE_PREFIX_3 "Packet2Packet bridging %s and %s\n", c0->name, c1->name);
03359 res = bridge_p2p_loop(c0, c1, p0, p1, timeoutms, flags, fo, rc, pvt0, pvt1);
03360 } else {
03361 if (option_verbose > 2)
03362 ast_verbose(VERBOSE_PREFIX_3 "Native bridging %s and %s\n", c0->name, c1->name);
03363 res = bridge_native_loop(c0, c1, p0, p1, vp0, vp1, pr0, pr1, codec0, codec1, timeoutms, flags, fo, rc, pvt0, pvt1);
03364 }
03365
03366 return res;
03367 }
03368
03369 static int rtp_do_debug_ip(int fd, int argc, char *argv[])
03370 {
03371 struct hostent *hp;
03372 struct ast_hostent ahp;
03373 int port = 0;
03374 char *p, *arg;
03375
03376 if (argc != 4)
03377 return RESULT_SHOWUSAGE;
03378 arg = argv[3];
03379 p = strstr(arg, ":");
03380 if (p) {
03381 *p = '\0';
03382 p++;
03383 port = atoi(p);
03384 }
03385 hp = ast_gethostbyname(arg, &ahp);
03386 if (hp == NULL)
03387 return RESULT_SHOWUSAGE;
03388 rtpdebugaddr.sin_family = AF_INET;
03389 memcpy(&rtpdebugaddr.sin_addr, hp->h_addr, sizeof(rtpdebugaddr.sin_addr));
03390 rtpdebugaddr.sin_port = htons(port);
03391 if (port == 0)
03392 ast_cli(fd, "RTP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtpdebugaddr.sin_addr));
03393 else
03394 ast_cli(fd, "RTP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtpdebugaddr.sin_addr), port);
03395 rtpdebug = 1;
03396 return RESULT_SUCCESS;
03397 }
03398
03399 static int rtcp_do_debug_ip_deprecated(int fd, int argc, char *argv[])
03400 {
03401 struct hostent *hp;
03402 struct ast_hostent ahp;
03403 int port = 0;
03404 char *p, *arg;
03405 if (argc != 5)
03406 return RESULT_SHOWUSAGE;
03407
03408 arg = argv[4];
03409 p = strstr(arg, ":");
03410 if (p) {
03411 *p = '\0';
03412 p++;
03413 port = atoi(p);
03414 }
03415 hp = ast_gethostbyname(arg, &ahp);
03416 if (hp == NULL)
03417 return RESULT_SHOWUSAGE;
03418 rtcpdebugaddr.sin_family = AF_INET;
03419 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03420 rtcpdebugaddr.sin_port = htons(port);
03421 if (port == 0)
03422 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03423 else
03424 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03425 rtcpdebug = 1;
03426 return RESULT_SUCCESS;
03427 }
03428
03429 static int rtcp_do_debug_ip(int fd, int argc, char *argv[])
03430 {
03431 struct hostent *hp;
03432 struct ast_hostent ahp;
03433 int port = 0;
03434 char *p, *arg;
03435 if (argc != 4)
03436 return RESULT_SHOWUSAGE;
03437
03438 arg = argv[3];
03439 p = strstr(arg, ":");
03440 if (p) {
03441 *p = '\0';
03442 p++;
03443 port = atoi(p);
03444 }
03445 hp = ast_gethostbyname(arg, &ahp);
03446 if (hp == NULL)
03447 return RESULT_SHOWUSAGE;
03448 rtcpdebugaddr.sin_family = AF_INET;
03449 memcpy(&rtcpdebugaddr.sin_addr, hp->h_addr, sizeof(rtcpdebugaddr.sin_addr));
03450 rtcpdebugaddr.sin_port = htons(port);
03451 if (port == 0)
03452 ast_cli(fd, "RTCP Debugging Enabled for IP: %s\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr));
03453 else
03454 ast_cli(fd, "RTCP Debugging Enabled for IP: %s:%d\n", ast_inet_ntoa(rtcpdebugaddr.sin_addr), port);
03455 rtcpdebug = 1;
03456 return RESULT_SUCCESS;
03457 }
03458
03459 static int rtp_do_debug(int fd, int argc, char *argv[])
03460 {
03461 if (argc != 2) {
03462 if (argc != 4)
03463 return RESULT_SHOWUSAGE;
03464 return rtp_do_debug_ip(fd, argc, argv);
03465 }
03466 rtpdebug = 1;
03467 memset(&rtpdebugaddr,0,sizeof(rtpdebugaddr));
03468 ast_cli(fd, "RTP Debugging Enabled\n");
03469 return RESULT_SUCCESS;
03470 }
03471
03472 static int rtcp_do_debug_deprecated(int fd, int argc, char *argv[]) {
03473 if (argc != 3) {
03474 if (argc != 5)
03475 return RESULT_SHOWUSAGE;
03476 return rtcp_do_debug_ip_deprecated(fd, argc, argv);
03477 }
03478 rtcpdebug = 1;
03479 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03480 ast_cli(fd, "RTCP Debugging Enabled\n");
03481 return RESULT_SUCCESS;
03482 }
03483
03484 static int rtcp_do_debug(int fd, int argc, char *argv[]) {
03485 if (argc != 2) {
03486 if (argc != 4)
03487 return RESULT_SHOWUSAGE;
03488 return rtcp_do_debug_ip(fd, argc, argv);
03489 }
03490 rtcpdebug = 1;
03491 memset(&rtcpdebugaddr,0,sizeof(rtcpdebugaddr));
03492 ast_cli(fd, "RTCP Debugging Enabled\n");
03493 return RESULT_SUCCESS;
03494 }
03495
03496 static int rtcp_do_stats_deprecated(int fd, int argc, char *argv[]) {
03497 if (argc != 3) {
03498 return RESULT_SHOWUSAGE;
03499 }
03500 rtcpstats = 1;
03501 ast_cli(fd, "RTCP Stats Enabled\n");
03502 return RESULT_SUCCESS;
03503 }
03504
03505 static int rtcp_do_stats(int fd, int argc, char *argv[]) {
03506 if (argc != 2) {
03507 return RESULT_SHOWUSAGE;
03508 }
03509 rtcpstats = 1;
03510 ast_cli(fd, "RTCP Stats Enabled\n");
03511 return RESULT_SUCCESS;
03512 }
03513
03514 static int rtp_no_debug(int fd, int argc, char *argv[])
03515 {
03516 if (argc != 3)
03517 return RESULT_SHOWUSAGE;
03518 rtpdebug = 0;
03519 ast_cli(fd,"RTP Debugging Disabled\n");
03520 return RESULT_SUCCESS;
03521 }
03522
03523 static int rtcp_no_debug_deprecated(int fd, int argc, char *argv[])
03524 {
03525 if (argc != 4)
03526 return RESULT_SHOWUSAGE;
03527 rtcpdebug = 0;
03528 ast_cli(fd,"RTCP Debugging Disabled\n");
03529 return RESULT_SUCCESS;
03530 }
03531
03532 static int rtcp_no_debug(int fd, int argc, char *argv[])
03533 {
03534 if (argc != 3)
03535 return RESULT_SHOWUSAGE;
03536 rtcpdebug = 0;
03537 ast_cli(fd,"RTCP Debugging Disabled\n");
03538 return RESULT_SUCCESS;
03539 }
03540
03541 static int rtcp_no_stats_deprecated(int fd, int argc, char *argv[])
03542 {
03543 if (argc != 4)
03544 return RESULT_SHOWUSAGE;
03545 rtcpstats = 0;
03546 ast_cli(fd,"RTCP Stats Disabled\n");
03547 return RESULT_SUCCESS;
03548 }
03549
03550 static int rtcp_no_stats(int fd, int argc, char *argv[])
03551 {
03552 if (argc != 3)
03553 return RESULT_SHOWUSAGE;
03554 rtcpstats = 0;
03555 ast_cli(fd,"RTCP Stats Disabled\n");
03556 return RESULT_SUCCESS;
03557 }
03558
03559 static int stun_do_debug(int fd, int argc, char *argv[])
03560 {
03561 if (argc != 2) {
03562 return RESULT_SHOWUSAGE;
03563 }
03564 stundebug = 1;
03565 ast_cli(fd, "STUN Debugging Enabled\n");
03566 return RESULT_SUCCESS;
03567 }
03568
03569 static int stun_no_debug(int fd, int argc, char *argv[])
03570 {
03571 if (argc != 3)
03572 return RESULT_SHOWUSAGE;
03573 stundebug = 0;
03574 ast_cli(fd, "STUN Debugging Disabled\n");
03575 return RESULT_SUCCESS;
03576 }
03577
03578 static char debug_usage[] =
03579 "Usage: rtp debug [ip host[:port]]\n"
03580 " Enable dumping of all RTP packets to and from host.\n";
03581
03582 static char no_debug_usage[] =
03583 "Usage: rtp debug off\n"
03584 " Disable all RTP debugging\n";
03585
03586 static char stun_debug_usage[] =
03587 "Usage: stun debug\n"
03588 " Enable STUN (Simple Traversal of UDP through NATs) debugging\n";
03589
03590 static char stun_no_debug_usage[] =
03591 "Usage: stun debug off\n"
03592 " Disable STUN debugging\n";
03593
03594 static char rtcp_debug_usage[] =
03595 "Usage: rtcp debug [ip host[:port]]\n"
03596 " Enable dumping of all RTCP packets to and from host.\n";
03597
03598 static char rtcp_no_debug_usage[] =
03599 "Usage: rtcp debug off\n"
03600 " Disable all RTCP debugging\n";
03601
03602 static char rtcp_stats_usage[] =
03603 "Usage: rtcp stats\n"
03604 " Enable dumping of RTCP stats.\n";
03605
03606 static char rtcp_no_stats_usage[] =
03607 "Usage: rtcp stats off\n"
03608 " Disable all RTCP stats\n";
03609
03610 static struct ast_cli_entry cli_rtp_no_debug_deprecated = {
03611 { "rtp", "no", "debug", NULL },
03612 rtp_no_debug, NULL,
03613 NULL };
03614
03615 static struct ast_cli_entry cli_rtp_rtcp_debug_ip_deprecated = {
03616 { "rtp", "rtcp", "debug", "ip", NULL },
03617 rtcp_do_debug_deprecated, NULL,
03618 NULL };
03619
03620 static struct ast_cli_entry cli_rtp_rtcp_debug_deprecated = {
03621 { "rtp", "rtcp", "debug", NULL },
03622 rtcp_do_debug_deprecated, NULL,
03623 NULL };
03624
03625 static struct ast_cli_entry cli_rtp_rtcp_no_debug_deprecated = {
03626 { "rtp", "rtcp", "no", "debug", NULL },
03627 rtcp_no_debug_deprecated, NULL,
03628 NULL };
03629
03630 static struct ast_cli_entry cli_rtp_rtcp_stats_deprecated = {
03631 { "rtp", "rtcp", "stats", NULL },
03632 rtcp_do_stats_deprecated, NULL,
03633 NULL };
03634
03635 static struct ast_cli_entry cli_rtp_rtcp_no_stats_deprecated = {
03636 { "rtp", "rtcp", "no", "stats", NULL },
03637 rtcp_no_stats_deprecated, NULL,
03638 NULL };
03639
03640 static struct ast_cli_entry cli_stun_no_debug_deprecated = {
03641 { "stun", "no", "debug", NULL },
03642 stun_no_debug, NULL,
03643 NULL };
03644
03645 static struct ast_cli_entry cli_rtp[] = {
03646 { { "rtp", "debug", "ip", NULL },
03647 rtp_do_debug, "Enable RTP debugging on IP",
03648 debug_usage },
03649
03650 { { "rtp", "debug", NULL },
03651 rtp_do_debug, "Enable RTP debugging",
03652 debug_usage },
03653
03654 { { "rtp", "debug", "off", NULL },
03655 rtp_no_debug, "Disable RTP debugging",
03656 no_debug_usage, NULL, &cli_rtp_no_debug_deprecated },
03657
03658 { { "rtcp", "debug", "ip", NULL },
03659 rtcp_do_debug, "Enable RTCP debugging on IP",
03660 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_ip_deprecated },
03661
03662 { { "rtcp", "debug", NULL },
03663 rtcp_do_debug, "Enable RTCP debugging",
03664 rtcp_debug_usage, NULL, &cli_rtp_rtcp_debug_deprecated },
03665
03666 { { "rtcp", "debug", "off", NULL },
03667 rtcp_no_debug, "Disable RTCP debugging",
03668 rtcp_no_debug_usage, NULL, &cli_rtp_rtcp_no_debug_deprecated },
03669
03670 { { "rtcp", "stats", NULL },
03671 rtcp_do_stats, "Enable RTCP stats",
03672 rtcp_stats_usage, NULL, &cli_rtp_rtcp_stats_deprecated },
03673
03674 { { "rtcp", "stats", "off", NULL },
03675 rtcp_no_stats, "Disable RTCP stats",
03676 rtcp_no_stats_usage, NULL, &cli_rtp_rtcp_no_stats_deprecated },
03677
03678 { { "stun", "debug", NULL },
03679 stun_do_debug, "Enable STUN debugging",
03680 stun_debug_usage },
03681
03682 { { "stun", "debug", "off", NULL },
03683 stun_no_debug, "Disable STUN debugging",
03684 stun_no_debug_usage, NULL, &cli_stun_no_debug_deprecated },
03685 };
03686
03687 int ast_rtp_reload(void)
03688 {
03689 struct ast_config *cfg;
03690 const char *s;
03691
03692 rtpstart = 5000;
03693 rtpend = 31000;
03694 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03695 cfg = ast_config_load("rtp.conf");
03696 if (cfg) {
03697 if ((s = ast_variable_retrieve(cfg, "general", "rtpstart"))) {
03698 rtpstart = atoi(s);
03699 if (rtpstart < 1024)
03700 rtpstart = 1024;
03701 if (rtpstart > 65535)
03702 rtpstart = 65535;
03703 }
03704 if ((s = ast_variable_retrieve(cfg, "general", "rtpend"))) {
03705 rtpend = atoi(s);
03706 if (rtpend < 1024)
03707 rtpend = 1024;
03708 if (rtpend > 65535)
03709 rtpend = 65535;
03710 }
03711 if ((s = ast_variable_retrieve(cfg, "general", "rtcpinterval"))) {
03712 rtcpinterval = atoi(s);
03713 if (rtcpinterval == 0)
03714 rtcpinterval = 0;
03715 if (rtcpinterval < RTCP_MIN_INTERVALMS)
03716 rtcpinterval = RTCP_MIN_INTERVALMS;
03717 if (rtcpinterval > RTCP_MAX_INTERVALMS)
03718 rtcpinterval = RTCP_MAX_INTERVALMS;
03719 }
03720 if ((s = ast_variable_retrieve(cfg, "general", "rtpchecksums"))) {
03721 #ifdef SO_NO_CHECK
03722 if (ast_false(s))
03723 nochecksums = 1;
03724 else
03725 nochecksums = 0;
03726 #else
03727 if (ast_false(s))
03728 ast_log(LOG_WARNING, "Disabling RTP checksums is not supported on this operating system!\n");
03729 #endif
03730 }
03731 if ((s = ast_variable_retrieve(cfg, "general", "dtmftimeout"))) {
03732 dtmftimeout = atoi(s);
03733 if ((dtmftimeout < 0) || (dtmftimeout > 20000)) {
03734 ast_log(LOG_WARNING, "DTMF timeout of '%d' outside range, using default of '%d' instead\n",
03735 dtmftimeout, DEFAULT_DTMF_TIMEOUT);
03736 dtmftimeout = DEFAULT_DTMF_TIMEOUT;
03737 };
03738 }
03739 ast_config_destroy(cfg);
03740 }
03741 if (rtpstart >= rtpend) {
03742 ast_log(LOG_WARNING, "Unreasonable values for RTP start/end port in rtp.conf\n");
03743 rtpstart = 5000;
03744 rtpend = 31000;
03745 }
03746 if (option_verbose > 1)
03747 ast_verbose(VERBOSE_PREFIX_2 "RTP Allocating from port range %d -> %d\n", rtpstart, rtpend);
03748 return 0;
03749 }
03750
03751
03752 void ast_rtp_init(void)
03753 {
03754 ast_cli_register_multiple(cli_rtp, sizeof(cli_rtp) / sizeof(struct ast_cli_entry));
03755 ast_rtp_reload();
03756 }
03757