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rtpengine
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rtpengine/daemon/call_interfaces.c

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#include "call_interfaces.h"
#include <stdio.h>
#include <unistd.h>
#include <glib.h>
#include <stdlib.h>
#include <pcre.h>
#include <inttypes.h>
#include "call_interfaces.h"
#include "call.h"
#include "aux.h"
#include "log.h"
#include "redis.h"
#include "sdp.h"
#include "bencode.h"
#include "str.h"
#include "control_tcp.h"
#include "control_udp.h"
#include "control_ng.h"
#include "rtp.h"
#include "ice.h"
#include "recording.h"
#include "rtplib.h"
#include "ssrc.h"
#include "tcp_listener.h"
#include "streambuf.h"
#include "main.h"
#include "load.h"
#include "media_player.h"
#include "dtmf.h"
#include "codec.h"
struct fragment_key {
str call_id;
str from_tag;
};
struct sdp_fragment {
struct ng_buffer *ngbuf;
struct timeval received;
GQueue streams;
struct sdp_ng_flags flags;
};
static pcre *info_re;
static pcre_extra *info_ree;
static pcre *streams_re;
static pcre_extra *streams_ree;
int trust_address_def;
int dtls_passive_def;
static mutex_t sdp_fragments_lock;
static GHashTable *sdp_fragments;
INLINE int call_ng_flags_prefix(struct sdp_ng_flags *out, str *s_ori, const char *prefix,
void (*cb)(struct sdp_ng_flags *, str *, void *), void *ptr);
static void call_ng_flags_str_ht(struct sdp_ng_flags *out, str *s, void *htp);
static void ng_stats_ssrc(bencode_item_t *dict, struct ssrc_hash *ht);
static int call_stream_address_gstring(GString *o, struct packet_stream *ps, enum stream_address_format format) {
int len, ret;
char buf[64]; /* 64 bytes ought to be enough for anybody */
ret = call_stream_address46(buf, ps, format, &len, NULL, 1);
g_string_append_len(o, buf, len);
return ret;
}
static str *streams_print(GQueue *s, int start, int end, const char *prefix, enum stream_address_format format) {
GString *o;
int i, af, port;
GList *l;
struct call_media *media;
struct packet_stream *ps;
o = g_string_new_str();
if (prefix)
g_string_append_printf(o, "%s ", prefix);
for (i = start; i <= end; i++) {
for (l = s->head; l; l = l->next) {
media = l->data;
if (media->index == i)
goto found;
}
ilog(LOG_WARNING, "Requested media index %i not found", i);
goto out;
found:
if (!media->streams.head) {
ilog(LOG_WARNING, "Media has no streams");
goto out;
}
ps = media->streams.head->data;
if (format == SAF_TCP)
call_stream_address_gstring(o, ps, format);
port = ps->selected_sfd ? ps->selected_sfd->socket.local.port : 0;
g_string_append_printf(o, (format == 1) ? "%i " : " %i", port);
if (format == SAF_UDP) {
af = call_stream_address_gstring(o, ps, format);
g_string_append_printf(o, " %c", (af == AF_INET) ? '4' : '6');
}
}
out:
g_string_append(o, "\n");
return g_string_free_str(o);
}
static int addr_parse_udp(struct stream_params *sp, char **out) {
const char *cp;
char c;
int i;
ZERO(*sp);
SP_SET(sp, SEND);
SP_SET(sp, RECV);
sp->protocol = &transport_protocols[PROTO_RTP_AVP];
if (out[RE_UDP_UL_ADDR4] && *out[RE_UDP_UL_ADDR4]) {
if (sockaddr_parse_any(&sp->rtp_endpoint.address, out[RE_UDP_UL_ADDR4]))
goto fail;
}
else if (out[RE_UDP_UL_ADDR6] && *out[RE_UDP_UL_ADDR6]) {
if (sockaddr_parse_any(&sp->rtp_endpoint.address, out[RE_UDP_UL_ADDR6]))
goto fail;
}
else
goto fail;
sp->rtp_endpoint.port = atoi(out[RE_UDP_UL_PORT]);
if (!sp->rtp_endpoint.port && strcmp(out[RE_UDP_UL_PORT], "0"))
goto fail;
if (out[RE_UDP_UL_FLAGS] && *out[RE_UDP_UL_FLAGS]) {
i = 0;
for (cp =out[RE_UDP_UL_FLAGS]; *cp && i < 2; cp++) {
c = chrtoupper(*cp);
if (c == 'E')
str_init(&sp->direction[i++], "external");
else if (c == 'I')
str_init(&sp->direction[i++], "internal");
}
}
if (out[RE_UDP_UL_NUM] && *out[RE_UDP_UL_NUM])
sp->index = atoi(out[RE_UDP_UL_NUM]);
if (!sp->index)
sp->index = 1;
sp->consecutive_ports = 1;
sp->rtcp_endpoint = sp->rtp_endpoint;
sp->rtcp_endpoint.port++;
return 0;
fail:
return -1;
}
static void updated_created_from(struct call *c, const char *addr, const endpoint_t *sin) {
if (!c->created_from && addr) {
c->created_from = call_strdup(c, addr);
if (sin)
c->created_from_addr = sin->address;
}
}
static str *call_update_lookup_udp(char **out, enum call_opmode opmode, const char* addr,
const endpoint_t *sin)
{
struct call *c;
struct call_monologue *dialogue[2];
GQueue q = G_QUEUE_INIT;
struct stream_params sp;
str *ret, callid, viabranch, fromtag, totag = STR_NULL;
int i;
str_init(&callid, out[RE_UDP_UL_CALLID]);
str_init(&viabranch, out[RE_UDP_UL_VIABRANCH]);
str_init(&fromtag, out[RE_UDP_UL_FROMTAG]);
str_init(&totag, out[RE_UDP_UL_TOTAG]);
if (opmode == OP_ANSWER)
str_swap(&fromtag, &totag);
c = call_get_opmode(&callid, opmode);
if (!c) {
ilog(LOG_WARNING, "[" STR_FORMAT_M "] Got UDP LOOKUP for unknown call-id",
STR_FMT_M(&callid));
return str_sprintf("%s 0 0.0.0.0\n", out[RE_UDP_COOKIE]);
}
updated_created_from(c, addr, sin);
if (call_get_mono_dialogue(dialogue, c, &fromtag, &totag, NULL))
goto ml_fail;
if (opmode == OP_OFFER) {
dialogue[0]->tagtype = FROM_TAG;
} else {
dialogue[0]->tagtype = TO_TAG;
}
if (addr_parse_udp(&sp, out))
goto addr_fail;
g_queue_push_tail(&q, &sp);
i = monologue_offer_answer(dialogue, &q, NULL);
g_queue_clear(&q);
if (i)
goto unlock_fail;
ret = streams_print(&dialogue[1]->medias,
sp.index, sp.index, out[RE_UDP_COOKIE], SAF_UDP);
rwlock_unlock_w(&c->master_lock);
redis_update_onekey(c, rtpe_redis_write);
gettimeofday(&(dialogue[0]->started), NULL);
ilog(LOG_INFO, "Returning to SIP proxy: "STR_FORMAT"", STR_FMT(ret));
goto out;
ml_fail:
ilog(LOG_ERR, "Invalid dialogue association");
goto unlock_fail;
addr_fail:
ilog(LOG_ERR, "Failed to parse a media stream: %s%s/%s:%s%s",
FMT_M(out[RE_UDP_UL_ADDR4], out[RE_UDP_UL_ADDR6], out[RE_UDP_UL_PORT]));
goto unlock_fail;
unlock_fail:
rwlock_unlock_w(&c->master_lock);
ret = str_sprintf("%s E8\n", out[RE_UDP_COOKIE]);
out:
obj_put(c);
return ret;
}
str *call_update_udp(char **out, const char* addr, const endpoint_t *sin) {
return call_update_lookup_udp(out, OP_OFFER, addr, sin);
}
str *call_lookup_udp(char **out) {
return call_update_lookup_udp(out, OP_ANSWER, NULL, NULL);
}
static int info_parse_func(char **a, void **ret, void *p) {
GHashTable *ih = p;
g_hash_table_replace(ih, strdup(a[0]), strdup(a[1]));
return -1;
}
static void info_parse(const char *s, GHashTable *ih) {
pcre_multi_match(info_re, info_ree, s, 2, info_parse_func, ih, NULL);
}
static int streams_parse_func(char **a, void **ret, void *p) {
struct stream_params *sp;
int *i;
i = p;
sp = g_slice_alloc0(sizeof(*sp));
SP_SET(sp, SEND);
SP_SET(sp, RECV);
sp->protocol = &transport_protocols[PROTO_RTP_AVP];
if (endpoint_parse_port_any(&sp->rtp_endpoint, a[0], atoi(a[1])))
goto fail;
sp->index = ++(*i);
sp->consecutive_ports = 1;
sp->rtcp_endpoint = sp->rtp_endpoint;
sp->rtcp_endpoint.port++;
if (!sp->rtp_endpoint.port && strcmp(a[1], "0"))
goto fail;
*ret = sp;
return 0;
fail:
ilog(LOG_WARNING, "Failed to parse a media stream: %s%s:%s%s", FMT_M(a[0], a[1]));
g_slice_free1(sizeof(*sp), sp);
return -1;
}
static void streams_parse(const char *s, GQueue *q) {
int i;
i = 0;
pcre_multi_match(streams_re, streams_ree, s, 3, streams_parse_func, &i, q);
}
void call_unlock_release(struct call **c) {
if (!*c)
return;
rwlock_unlock_w(&(*c)->master_lock);
obj_put(*c);
}
static str *call_request_lookup_tcp(char **out, enum call_opmode opmode) {
struct call *c;
struct call_monologue *dialogue[2];
AUTO_CLEANUP(GQueue s, sdp_streams_free) = G_QUEUE_INIT;
str *ret = NULL, callid, fromtag, totag = STR_NULL;
GHashTable *infohash;
str_init(&callid, out[RE_TCP_RL_CALLID]);
infohash = g_hash_table_new_full(g_str_hash, g_str_equal, free, free);
c = call_get_opmode(&callid, opmode);
if (!c) {
ilog(LOG_WARNING, "[" STR_FORMAT_M "] Got LOOKUP for unknown call-id", STR_FMT_M(&callid));
goto out;
}
info_parse(out[RE_TCP_RL_INFO], infohash);
streams_parse(out[RE_TCP_RL_STREAMS], &s);
str_init(&fromtag, g_hash_table_lookup(infohash, "fromtag"));
if (!fromtag.s) {
ilog(LOG_WARNING, "No from-tag in message");
goto out2;
}
str_init(&totag, g_hash_table_lookup(infohash, "totag"));
if (opmode == OP_ANSWER) {
if (!totag.s) {
ilog(LOG_WARNING, "No to-tag in message");
goto out2;
}
str_swap(&fromtag, &totag);
}
if (call_get_mono_dialogue(dialogue, c, &fromtag, &totag, NULL)) {
ilog(LOG_WARNING, "Invalid dialogue association");
goto out2;
}
if (monologue_offer_answer(dialogue, &s, NULL))
goto out2;
ret = streams_print(&dialogue[1]->medias, 1, s.length, NULL, SAF_TCP);
out2:
rwlock_unlock_w(&c->master_lock);
redis_update_onekey(c, rtpe_redis_write);
ilog(LOG_INFO, "Returning to SIP proxy: "STR_FORMAT"", STR_FMT0(ret));
obj_put(c);
out:
g_hash_table_destroy(infohash);
return ret;
}
str *call_request_tcp(char **out) {
return call_request_lookup_tcp(out, OP_OFFER);
}
str *call_lookup_tcp(char **out) {
return call_request_lookup_tcp(out, OP_ANSWER);
}
str *call_delete_udp(char **out) {
str callid, branch, fromtag, totag;
__C_DBG("got delete for callid '%s' and viabranch '%s'",
out[RE_UDP_DQ_CALLID], out[RE_UDP_DQ_VIABRANCH]);
str_init(&callid, out[RE_UDP_DQ_CALLID]);
str_init(&branch, out[RE_UDP_DQ_VIABRANCH]);
str_init(&fromtag, out[RE_UDP_DQ_FROMTAG]);
str_init(&totag, out[RE_UDP_DQ_TOTAG]);
if (call_delete_branch(&callid, &branch, &fromtag, &totag, NULL, -1))
return str_sprintf("%s E8\n", out[RE_UDP_COOKIE]);
return str_sprintf("%s 0\n", out[RE_UDP_COOKIE]);
}
str *call_query_udp(char **out) {
AUTO_CLEANUP_NULL(struct call *c, call_unlock_release);
str *ret, callid, fromtag, totag;
struct call_stats stats;
__C_DBG("got query for callid '%s'", out[RE_UDP_DQ_CALLID]);
str_init(&callid, out[RE_UDP_DQ_CALLID]);
str_init(&fromtag, out[RE_UDP_DQ_FROMTAG]);
str_init(&totag, out[RE_UDP_DQ_TOTAG]);
c = call_get_opmode(&callid, OP_OTHER);
if (!c) {
ilog(LOG_INFO, "[" STR_FORMAT_M "] Call-ID to query not found", STR_FMT_M(&callid));
goto err;
}
ng_call_stats(c, &fromtag, &totag, NULL, &stats);
rwlock_unlock_w(&c->master_lock);
rwlock_lock_r(&rtpe_config.config_lock);
ret = str_sprintf("%s %lld "UINT64F" "UINT64F" "UINT64F" "UINT64F"\n", out[RE_UDP_COOKIE],
(long long int) rtpe_config.silent_timeout - (rtpe_now.tv_sec - stats.last_packet),
atomic64_get_na(&stats.totals[0].packets), atomic64_get_na(&stats.totals[1].packets),
atomic64_get_na(&stats.totals[2].packets), atomic64_get_na(&stats.totals[3].packets));
rwlock_unlock_r(&rtpe_config.config_lock);
goto out;
err:
ret = str_sprintf("%s E8\n", out[RE_UDP_COOKIE]);
out:
return ret;
}
void call_delete_tcp(char **out) {
str callid;
str_init(&callid, out[RE_TCP_D_CALLID]);
call_delete_branch(&callid, NULL, NULL, NULL, NULL, -1);
}
static void call_status_iterator(struct call *c, struct streambuf_stream *s) {
// GList *l;
// struct callstream *cs;
// struct peer *p;
// struct streamrelay *r1, *r2;
// struct streamrelay *rx1, *rx2;
// char addr1[64], addr2[64], addr3[64];
// mutex_lock(&c->master_lock);
streambuf_printf(s->outbuf, "session "STR_FORMAT" - - - - %lli\n",
STR_FMT(&c->callid),
timeval_diff(&rtpe_now, &c->created) / 1000000);
/* XXX restore function */
// mutex_unlock(&c->master_lock);
}
void calls_status_tcp(struct streambuf_stream *s) {
rwlock_lock_r(&rtpe_callhash_lock);
streambuf_printf(s->outbuf, "proxy %u "UINT64F"/%i/%i\n",
g_hash_table_size(rtpe_callhash),
atomic64_get(&rtpe_stats.intv.bytes_user) + atomic64_get(&rtpe_stats.intv.bytes_kernel), 0, 0);
rwlock_unlock_r(&rtpe_callhash_lock);
ITERATE_CALL_LIST_START(CALL_ITERATOR_MAIN, c);
call_status_iterator(c, s);
ITERATE_CALL_LIST_NEXT_END(c);
}
static void call_release_ref(void *p) {
struct call *c = p;
obj_put(c);
}
INLINE void call_bencode_hold_ref(struct call *c, bencode_item_t *bi) {
/* We cannot guarantee that the "call" structures are still around at the time
* when the bencode reply is finally read and sent out. Since we use scatter/gather
* to avoid duplication of strings and stuff, we reserve a reference to the call
* structs and have it released when the bencode buffer is destroyed. This is
* necessary every time the bencode response may reference strings contained
* within the call structs. */
bencode_buffer_destroy_add(bi->buffer, call_release_ref, obj_get(c));
}
INLINE void str_hyphenate(str *s_ori) {
str s;
s = *s_ori;
while (s.len) {
if (!str_chr_str(&s, &s, ' '))
break;
*s.s = '-';
str_shift(&s, 1);
}
}
INLINE char *bencode_get_alt(bencode_item_t *i, const char *one, const char *two, str *out) {
char *o;
if ((o = bencode_dictionary_get_str(i, one, out)))
return o;
return bencode_dictionary_get_str(i, two, out);
}
INLINE void ng_sdes_option(struct sdp_ng_flags *out, str *s, void *dummy) {
str_hyphenate(s);
if (call_ng_flags_prefix(out, s, "no-", call_ng_flags_str_ht, &out->sdes_no))
return;
switch (__csh_lookup(s)) {
case CSH_LOOKUP("no"):
case CSH_LOOKUP("off"):
case CSH_LOOKUP("disabled"):
case CSH_LOOKUP("disable"):
out->sdes_off = 1;
break;
case CSH_LOOKUP("unencrypted_srtp"):
case CSH_LOOKUP("UNENCRYPTED_SRTP"):
out->sdes_unencrypted_srtp = 1;
break;
case CSH_LOOKUP("unencrypted_srtcp"):
case CSH_LOOKUP("UNENCRYPTED_SRTCP"):
out->sdes_unencrypted_srtcp = 1;
break;
case CSH_LOOKUP("unauthenticated_srtp"):
case CSH_LOOKUP("UNAUTHENTICATED_SRTP"):
out->sdes_unauthenticated_srtp = 1;
break;
case CSH_LOOKUP("encrypted_srtp"):
case CSH_LOOKUP("ENCRYPTED_SRTP"):
out->sdes_encrypted_srtp = 1;
break;
case CSH_LOOKUP("encrypted_srtcp"):
case CSH_LOOKUP("ENCRYPTED_SRTCP"):
out->sdes_encrypted_srtcp = 1;
break;
case CSH_LOOKUP("authenticated_srtp"):
case CSH_LOOKUP("AUTHENTICATED_SRTP"):
out->sdes_authenticated_srtp = 1;
break;
case CSH_LOOKUP("lifetime"):
out->sdes_lifetime = 1;
break;
case CSH_LOOKUP("pad"):
out->sdes_pad = 1;
break;
case CSH_LOOKUP("static"):
out->sdes_static = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'SDES' flag encountered: '"STR_FORMAT"'",
STR_FMT(s));
}
}
INLINE void ng_osrtp_option(struct sdp_ng_flags *out, str *s, void *dummy) {
switch (__csh_lookup(s)) {
case CSH_LOOKUP("accept"):
out->osrtp_accept = 1;
break;
case CSH_LOOKUP("offer"):
out->osrtp_offer = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'OSRTP' flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
INLINE void ng_el_option(struct sdp_ng_flags *out, str *s, void *dummy) {
switch (__csh_lookup(s)) {
case CSH_LOOKUP("off"):
out->el_option = EL_OFF;
break;
case CSH_LOOKUP("immediate"):
out->el_option = EL_IMMEDIATE;
break;
case CSH_LOOKUP("delayed"):
out->el_option = EL_DELAYED;
break;
case CSH_LOOKUP("heuristic"):
out->el_option = EL_HEURISTIC;
break;
default:
ilog(LOG_WARN, "Unknown 'endpoint-learning' flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
#ifdef WITH_TRANSCODING
INLINE void ng_t38_option(struct sdp_ng_flags *out, str *s, void *dummy) {
str_hyphenate(s);
switch (__csh_lookup(s)) {
case CSH_LOOKUP("decode"):
out->t38_decode = 1;
break;
case CSH_LOOKUP("force"):
out->t38_force = 1;
break;
case CSH_LOOKUP("stop"):
out->t38_stop = 1;
break;
case CSH_LOOKUP("no-ecm"):
case CSH_LOOKUP("no-ECM"):
out->t38_no_ecm = 1;
break;
case CSH_LOOKUP("no-V17"):
case CSH_LOOKUP("no-V.17"):
case CSH_LOOKUP("no-v17"):
case CSH_LOOKUP("no-v.17"):
out->t38_no_v17 = 1;
break;
case CSH_LOOKUP("no-V.27ter"):
case CSH_LOOKUP("no-V27ter"):
case CSH_LOOKUP("no-v.27ter"):
case CSH_LOOKUP("no-v27ter"):
out->t38_no_v27ter = 1;
break;
case CSH_LOOKUP("no-V29"):
case CSH_LOOKUP("no-V.29"):
case CSH_LOOKUP("no-v29"):
case CSH_LOOKUP("no-v.29"):
out->t38_no_v29 = 1;
break;
case CSH_LOOKUP("no-V34"):
case CSH_LOOKUP("no-V.34"):
case CSH_LOOKUP("no-v34"):
case CSH_LOOKUP("no-v.34"):
out->t38_no_v34 = 1;
break;
case CSH_LOOKUP("no-IAF"):
case CSH_LOOKUP("no-iaf"):
out->t38_no_iaf = 1;
break;
case CSH_LOOKUP("FEC"):
case CSH_LOOKUP("fec"):
out->t38_fec = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'T.38' flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
#endif
static void call_ng_flags_list(struct sdp_ng_flags *out, bencode_item_t *list,
void (*callback)(struct sdp_ng_flags *, str *, void *), void *parm)
{
if (list->type != BENCODE_LIST)
return;
for (bencode_item_t *it = list->child; it; it = it->sibling) {
str s;
if (!bencode_get_str(it, &s))
continue;
callback(out, &s, parm);
}
}
static void call_ng_flags_rtcp_mux(struct sdp_ng_flags *out, str *s, void *dummy) {
switch (__csh_lookup(s)) {
case CSH_LOOKUP("offer"):
out->rtcp_mux_offer = 1;
break;
case CSH_LOOKUP("require"):
out->rtcp_mux_require = 1;
break;
case CSH_LOOKUP("demux"):
out->rtcp_mux_demux = 1;
break;
case CSH_LOOKUP("accept"):
out->rtcp_mux_accept = 1;
break;
case CSH_LOOKUP("reject"):
out->rtcp_mux_reject = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'rtcp-mux' flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
static void call_ng_flags_replace(struct sdp_ng_flags *out, str *s, void *dummy) {
str_hyphenate(s);
switch (__csh_lookup(s)) {
case CSH_LOOKUP("origin"):
out->replace_origin = 1;
break;
case CSH_LOOKUP("session-connection"):
out->replace_sess_conn = 1;
break;
case CSH_LOOKUP("session-name"):
out->replace_sess_name = 1;
break;
case CSH_LOOKUP("sdp-version"):
case CSH_LOOKUP("SDP-version"):
out->replace_sdp_version = 1;
break;
case CSH_LOOKUP("username"):
out->replace_username = 1;
break;
case CSH_LOOKUP("zero-address"):
out->replace_zero_address = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'replace' flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
static void call_ng_flags_supports(struct sdp_ng_flags *out, str *s, void *dummy) {
if (!str_cmp(s, "load limit"))
out->supports_load_limit = 1;
}
static str *str_dup_escape(const str *s) {
str *ret = str_dup(s);
int i;
while ((i = str_str(ret, "--")) >= 0) {
ret->s[i] = '=';
memmove(&ret->s[i + 1], &ret->s[i + 2], ret->len - i - 2);
ret->len--;
}
return ret;
}
static void call_ng_flags_esc_str_list(struct sdp_ng_flags *out, str *s, void *qp) {
str *s_copy = str_dup_escape(s);
g_queue_push_tail((GQueue *) qp, s_copy);
}
static void call_ng_flags_str_ht(struct sdp_ng_flags *out, str *s, void *htp) {
str *s_copy = str_dup_escape(s);
GHashTable **ht = htp;
if (!*ht)
*ht = g_hash_table_new_full(str_case_hash, str_case_equal, free, NULL);
g_hash_table_replace(*ht, s_copy, s_copy);
}
#ifdef WITH_TRANSCODING
static void call_ng_flags_str_ht_split(struct sdp_ng_flags *out, str *s, void *htp) {
GHashTable **ht = htp;
if (!*ht)
*ht = g_hash_table_new_full(str_case_hash, str_case_equal, free, free);
str splitter = *s;
while (1) {
g_hash_table_replace(*ht, str_dup_escape(&splitter), str_dup_escape(s));
char *c = memrchr(splitter.s, '/', splitter.len);
if (!c)
break;
splitter.len = c - splitter.s;
}
}
#endif
// helper to alias values from other dictionaries into the "flags" dictionary
INLINE int call_ng_flags_prefix(struct sdp_ng_flags *out, str *s_ori, const char *prefix,
void (*cb)(struct sdp_ng_flags *, str *, void *), void *ptr)
{
size_t len = strlen(prefix);
str s = *s_ori;
if (len > 0)
if (str_shift_cmp(&s, prefix))
return 0;
cb(out, &s, ptr);
return 1;
}
static void call_ng_flags_flags(struct sdp_ng_flags *out, str *s, void *dummy) {
str_hyphenate(s);
switch (__csh_lookup(s)) {
case CSH_LOOKUP("trust-address"):
out->trust_address = 1;
break;
case CSH_LOOKUP("SIP-source-address"):
case CSH_LOOKUP("sip-source-address"):
out->trust_address = 0;
break;
case CSH_LOOKUP("asymmetric"):
out->asymmetric = 1;
break;
case CSH_LOOKUP("no-redis-update"):
out->no_redis_update = 1;
break;
case CSH_LOOKUP("unidirectional"):
out->unidirectional = 1;
break;
case CSH_LOOKUP("strict-source"):
out->strict_source = 1;
break;
case CSH_LOOKUP("media-handover"):
out->media_handover = 1;
break;
case CSH_LOOKUP("reset"):
out->reset = 1;
break;
case CSH_LOOKUP("all"):
out->all = 1;
break;
case CSH_LOOKUP("SIPREC"):
case CSH_LOOKUP("siprec"):
out->siprec = 1;
break;
case CSH_LOOKUP("fragment"):
out->fragment = 1;
break;
case CSH_LOOKUP("port-latching"):
out->port_latching = 1;
break;
case CSH_LOOKUP("no-port-latching"):
out->no_port_latching = 1;
break;
case CSH_LOOKUP("generate-mid"):
out->generate_mid = 1;
break;
case CSH_LOOKUP("strip-extmap"):
out->strip_extmap = 1;
break;
case CSH_LOOKUP("record-call"):
out->record_call = 1;
break;
case CSH_LOOKUP("debug"):
out->debug = 1;
break;
case CSH_LOOKUP("debugging"):
out->debug = 1;
break;
case CSH_LOOKUP("no-rtcp-attribute"):
case CSH_LOOKUP("no-RTCP-attribute"):
out->no_rtcp_attr = 1;
break;
case CSH_LOOKUP("full-rtcp-attribute"):
case CSH_LOOKUP("full-RTCP-attribute"):
out->full_rtcp_attr = 1;
break;
case CSH_LOOKUP("generate-RTCP"):
case CSH_LOOKUP("generate-rtcp"):
out->generate_rtcp = 1;
break;
case CSH_LOOKUP("trickle-ICE"):
case CSH_LOOKUP("trickle-ice"):
out->trickle_ice = 1;
break;
case CSH_LOOKUP("loop-protect"):
out->loop_protect = 1;
break;
case CSH_LOOKUP("original-sendrecv"):
out->original_sendrecv = 1;
break;
case CSH_LOOKUP("always-transcode"):;
static const str str_all = STR_CONST_INIT("all");
call_ng_flags_esc_str_list(out, (str *) &str_all, &out->codec_accept);
break;
case CSH_LOOKUP("asymmetric-codecs"):
ilog(LOG_INFO, "Ignoring obsolete flag `asymmetric-codecs`");
break;
case CSH_LOOKUP("symmetric-codecs"):
ilog(LOG_INFO, "Ignoring obsolete flag `symmetric-codecs`");
break;
case CSH_LOOKUP("reorder-codecs"):
ilog(LOG_INFO, "Ignoring obsolete flag `reorder-codecs`");
break;
case CSH_LOOKUP("reuse-codecs"):
out->reuse_codec = 1;
break;
case CSH_LOOKUP("no-codec-renegotiation"):
out->reuse_codec = 1;
break;
case CSH_LOOKUP("single-codec"):
out->single_codec = 1;
break;
case CSH_LOOKUP("allow-transcoding"):
out->allow_transcoding = 1;
break;
case CSH_LOOKUP("inject-DTMF"):
case CSH_LOOKUP("inject-dtmf"):
out->inject_dtmf = 1;
break;
case CSH_LOOKUP("detect-DTMF"):
case CSH_LOOKUP("detect-dtmf"):
out->detect_dtmf = 1;
break;
case CSH_LOOKUP("pad-crypto"):
out->sdes_pad = 1;
break;
case CSH_LOOKUP("passthrough"):
out->passthrough_on = 1;
break;
case CSH_LOOKUP("no-passthrough"):
out->passthrough_off = 1;
break;
case CSH_LOOKUP("no-jitter-buffer"):
out->disable_jb = 1;
break;
case CSH_LOOKUP("pierce-NAT"):
case CSH_LOOKUP("pierce-nat"):
out->pierce_nat = 1;
break;
case CSH_LOOKUP("NAT-wait"):
case CSH_LOOKUP("nat-wait"):
out->nat_wait = 1;
break;
default:
// handle values aliases from other dictionaries
if (call_ng_flags_prefix(out, s, "from-tags-", call_ng_flags_esc_str_list,
&out->from_tags))
return;
if (call_ng_flags_prefix(out, s, "SDES-no-", call_ng_flags_str_ht, &out->sdes_no))
return;
if (call_ng_flags_prefix(out, s, "SDES-", ng_sdes_option, NULL))
return;
if (call_ng_flags_prefix(out, s, "OSRTP-", ng_osrtp_option, NULL))
return;
if (call_ng_flags_prefix(out, s, "codec-strip-", call_ng_flags_esc_str_list,
&out->codec_strip))
return;
if (call_ng_flags_prefix(out, s, "codec-offer-", call_ng_flags_esc_str_list,
&out->codec_offer))
return;
if (call_ng_flags_prefix(out, s, "codec-except-", call_ng_flags_str_ht,
&out->codec_except))
return;
if (call_ng_flags_prefix(out, s, "endpoint-learning-", ng_el_option, NULL))
return;
#ifdef WITH_TRANSCODING
if (out->opmode == OP_OFFER || out->opmode == OP_REQUEST || out->opmode == OP_PUBLISH) {
if (call_ng_flags_prefix(out, s, "transcode-", call_ng_flags_esc_str_list,
&out->codec_transcode))
return;
if (call_ng_flags_prefix(out, s, "codec-transcode-", call_ng_flags_esc_str_list,
&out->codec_transcode))
return;
if (call_ng_flags_prefix(out, s, "codec-mask-", call_ng_flags_esc_str_list,
&out->codec_mask))
return;
if (call_ng_flags_prefix(out, s, "T38-", ng_t38_option, NULL))
return;
if (call_ng_flags_prefix(out, s, "T.38-", ng_t38_option, NULL))
return;
}
if (call_ng_flags_prefix(out, s, "codec-set-", call_ng_flags_str_ht_split,
&out->codec_set))
return;
if (call_ng_flags_prefix(out, s, "codec-accept-", call_ng_flags_esc_str_list,
&out->codec_accept))
return;
if (call_ng_flags_prefix(out, s, "codec-consume-", call_ng_flags_esc_str_list,
&out->codec_consume))
return;
#endif
ilog(LOG_WARN, "Unknown flag encountered: '" STR_FORMAT "'",
STR_FMT(s));
}
}
void call_ng_flags_init(struct sdp_ng_flags *out, enum call_opmode opmode) {
ZERO(*out);
out->opmode = opmode;
out->trust_address = trust_address_def;
out->dtls_passive = dtls_passive_def;
out->dtls_reverse_passive = dtls_passive_def;
out->el_option = rtpe_config.endpoint_learning;
out->tos = 256;
out->delay_buffer = -1;
}
static void call_ng_dict_iter(struct sdp_ng_flags *out, bencode_item_t *input,
void (*callback)(struct sdp_ng_flags *, str *key, bencode_item_t *value))
{
if (input->type != BENCODE_DICTIONARY)
return;
bencode_item_t *value = NULL;
for (bencode_item_t *key = input->child; key; key = value->sibling) {
value = key->sibling;
if (!value)
break;
str k;
if (!bencode_get_str(key, &k))
continue;
callback(out, &k, value);
}
}
static void call_ng_codec_flags(struct sdp_ng_flags *out, str *key, bencode_item_t *value) {
switch (__csh_lookup(key)) {
case CSH_LOOKUP("strip"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->codec_strip);
break;
case CSH_LOOKUP("offer"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->codec_offer);
break;
case CSH_LOOKUP("except"):
call_ng_flags_list(out, value, call_ng_flags_str_ht, &out->codec_except);
break;
}
#ifdef WITH_TRANSCODING
if (out->opmode == OP_OFFER || out->opmode == OP_REQUEST || out->opmode == OP_PUBLISH) {
switch (__csh_lookup(key)) {
case CSH_LOOKUP("transcode"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list,
&out->codec_transcode);
break;
case CSH_LOOKUP("mask"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->codec_mask);
break;
case CSH_LOOKUP("set"):
call_ng_flags_list(out, value, call_ng_flags_str_ht_split, &out->codec_set);
break;
case CSH_LOOKUP("accept"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->codec_accept);
break;
case CSH_LOOKUP("consume"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->codec_consume);
break;
}
}
#endif
}
static void call_ng_main_flags(struct sdp_ng_flags *out, str *key, bencode_item_t *value) {
str s = STR_NULL;
bencode_item_t *it;
bencode_get_str(value, &s);
switch (__csh_lookup(key)) {
case CSH_LOOKUP("call-id"):
case CSH_LOOKUP("call-ID"):
case CSH_LOOKUP("call id"):
case CSH_LOOKUP("call ID"):
out->call_id = s;
break;
case CSH_LOOKUP("from-tag"):
out->from_tag = s;
break;
case CSH_LOOKUP("to-tag"):
out->to_tag = s;
break;
case CSH_LOOKUP("via-branch"):
out->via_branch = s;
break;
case CSH_LOOKUP("from-label"):
case CSH_LOOKUP("label"):
out->label = s;
break;
case CSH_LOOKUP("to-label"):
case CSH_LOOKUP("set-label"):
out->set_label = s;
break;
case CSH_LOOKUP("address"):
out->address = s;
break;
case CSH_LOOKUP("SDP"):
case CSH_LOOKUP("sdp"):
out->sdp = s;
break;
case CSH_LOOKUP("interface"):
out->interface = s;
break;
case CSH_LOOKUP("flags"):
call_ng_flags_list(out, value, call_ng_flags_flags, NULL);
break;
case CSH_LOOKUP("replace"):
call_ng_flags_list(out, value, call_ng_flags_replace, NULL);
break;
case CSH_LOOKUP("supports"):
call_ng_flags_list(out, value, call_ng_flags_supports, NULL);
break;
case CSH_LOOKUP("from-tags"):
call_ng_flags_list(out, value, call_ng_flags_esc_str_list, &out->from_tags);
break;
case CSH_LOOKUP("rtcp-mux"):
case CSH_LOOKUP("RTCP-mux"):
call_ng_flags_list(out, value, call_ng_flags_rtcp_mux, NULL);
break;
case CSH_LOOKUP("SDES"):
case CSH_LOOKUP("sdes"):
call_ng_flags_list(out, value, ng_sdes_option, NULL);
break;
case CSH_LOOKUP("OSRTP"):
case CSH_LOOKUP("osrtp"):
call_ng_flags_list(out, value, ng_osrtp_option, NULL);
break;
case CSH_LOOKUP("endpoint-learning"):
case CSH_LOOKUP("endpoint learning"):
call_ng_flags_list(out, value, ng_el_option, NULL);
break;
case CSH_LOOKUP("direction"):
if (value->type != BENCODE_LIST)
break;
int diridx = 0;
for (bencode_item_t *it = value->child; it && diridx < 2; it = it->sibling)
bencode_get_str(it, &out->direction[diridx++]);
break;
case CSH_LOOKUP("received from"):
case CSH_LOOKUP("received-from"):
if (value->type != BENCODE_LIST)
break;
if (value && (it = value->child)) {
bencode_get_str(it, &out->received_from_family);
bencode_get_str(it->sibling, &out->received_from_address);
}
break;
case CSH_LOOKUP("drop-traffic"):
case CSH_LOOKUP("drop traffic"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("start"):
out->drop_traffic_start = 1;
break;
case CSH_LOOKUP("stop"):
out->drop_traffic_stop = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'drop-traffic' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("ICE"):
case CSH_LOOKUP("ice"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("remove"):
out->ice_option = ICE_REMOVE;
break;
case CSH_LOOKUP("force"):
out->ice_option = ICE_FORCE;
break;
case CSH_LOOKUP("default"):
out->ice_option = ICE_DEFAULT;
break;
case CSH_LOOKUP("optional"):
out->ice_option = ICE_OPTIONAL;
break;
case CSH_LOOKUP("force_relay"):
case CSH_LOOKUP("force-relay"):
case CSH_LOOKUP("force relay"):
out->ice_option = ICE_FORCE_RELAY;
break;
default:
ilog(LOG_WARN, "Unknown 'ICE' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("ICE-lite"):
case CSH_LOOKUP("ice-lite"):
case CSH_LOOKUP("ICE lite"):
case CSH_LOOKUP("ice lite"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("off"):
case CSH_LOOKUP("none"):
case CSH_LOOKUP("no"):
out->ice_lite_option = ICE_LITE_OFF;
break;
case CSH_LOOKUP("forward"):
case CSH_LOOKUP("offer"):
case CSH_LOOKUP("fwd"):
case CSH_LOOKUP("fw"):
out->ice_lite_option = ICE_LITE_FWD;
break;
case CSH_LOOKUP("backward"):
case CSH_LOOKUP("backwards"):
case CSH_LOOKUP("reverse"):
case CSH_LOOKUP("answer"):
case CSH_LOOKUP("back"):
case CSH_LOOKUP("bkw"):
case CSH_LOOKUP("bk"):
out->ice_lite_option = ICE_LITE_BKW;
break;
case CSH_LOOKUP("both"):
out->ice_lite_option = ICE_LITE_BOTH;
break;
default:
ilog(LOG_WARN, "Unknown 'ICE-lite' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("DTLS"):
case CSH_LOOKUP("dtls"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("passive"):
out->dtls_passive = 1;
break;
case CSH_LOOKUP("active"):
out->dtls_passive = 0;
break;
case CSH_LOOKUP("no"):
case CSH_LOOKUP("off"):
case CSH_LOOKUP("disabled"):
case CSH_LOOKUP("disable"):
out->dtls_off = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'DTLS' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("DTLS-reverse"):
case CSH_LOOKUP("dtls-reverse"):
case CSH_LOOKUP("DTLS reverse"):
case CSH_LOOKUP("dtls reverse"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("passive"):
out->dtls_reverse_passive = 1;
break;
case CSH_LOOKUP("active"):
out->dtls_reverse_passive = 0;
break;
default:
ilog(LOG_WARN, "Unknown 'DTLS-reverse' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("passthrough"):
case CSH_LOOKUP("passthru"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("on"):
case CSH_LOOKUP("yes"):
case CSH_LOOKUP("enable"):
case CSH_LOOKUP("enabled"):
out->passthrough_on = 1;
break;
case CSH_LOOKUP("no"):
case CSH_LOOKUP("off"):
case CSH_LOOKUP("disable"):
case CSH_LOOKUP("disabled"):
out->passthrough_off = 1;
break;
default:
ilog(LOG_WARN, "Unknown 'passthrough' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("transport protocol"):
case CSH_LOOKUP("transport-protocol"):
if (!str_cmp(&s, "accept"))
out->protocol_accept = 1;
else
out->transport_protocol = transport_protocol(&s);
break;
case CSH_LOOKUP("media address"):
case CSH_LOOKUP("media-address"):
out->media_address = s;
break;
case CSH_LOOKUP("record call"):
case CSH_LOOKUP("record-call"):
out->record_call_str = s;
break;
case CSH_LOOKUP("address family"):
case CSH_LOOKUP("address-family"):
if (bencode_get_str(value, &out->address_family_str))
out->address_family = get_socket_family_rfc(&out->address_family_str);
break;
case CSH_LOOKUP("metadata"):
out->metadata = s;
break;
case CSH_LOOKUP("DTLS fingerprint"):
case CSH_LOOKUP("DTLS-fingerprint"):
case CSH_LOOKUP("dtls fingerprint"):
case CSH_LOOKUP("dtls-fingerprint"):
out->dtls_fingerprint = s;
break;
case CSH_LOOKUP("TOS"):
case CSH_LOOKUP("tos"):
out->tos = bencode_get_integer_str(value, out->tos);
break;
case CSH_LOOKUP("ptime"):
if (out->opmode == OP_OFFER)
out->ptime = bencode_get_integer_str(value, 0);
break;
case CSH_LOOKUP("ptime-reverse"):
case CSH_LOOKUP("ptime reverse"):
case CSH_LOOKUP("reverse ptime"):
case CSH_LOOKUP("reverse-ptime"):
if (out->opmode == OP_OFFER)
out->rev_ptime = bencode_get_integer_str(value, 0);
break;
case CSH_LOOKUP("xmlrpc-callback"):
case CSH_LOOKUP("XMLRPC-callback"):
if (sockaddr_parse_any_str(&out->xmlrpc_callback, &s))
ilog(LOG_WARN, "Failed to parse 'xmlrpc-callback' address '" STR_FORMAT "'",
STR_FMT(&s));
break;
case CSH_LOOKUP("codec"):
call_ng_dict_iter(out, value, call_ng_codec_flags);
break;
case CSH_LOOKUP("generate RTCP"):
case CSH_LOOKUP("generate-RTCP"):
case CSH_LOOKUP("generate rtcp"):
case CSH_LOOKUP("generate-rtcp"):
if (!str_cmp(&s, "on"))
out->generate_rtcp = 1;
else if (!str_cmp(&s, "off"))
out->generate_rtcp_off = 1;
break;
case CSH_LOOKUP("media echo"):
case CSH_LOOKUP("media-echo"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("blackhole"):
case CSH_LOOKUP("sinkhole"):
out->media_echo = MEO_BLACKHOLE;
break;
case CSH_LOOKUP("forward"):
case CSH_LOOKUP("fwd"):
case CSH_LOOKUP("fw"):
out->media_echo = MEO_FWD;
break;
case CSH_LOOKUP("backward"):
case CSH_LOOKUP("backwards"):
case CSH_LOOKUP("reverse"):
case CSH_LOOKUP("back"):
case CSH_LOOKUP("bkw"):
case CSH_LOOKUP("bk"):
out->media_echo = MEO_BKW;
break;
case CSH_LOOKUP("both"):
out->media_echo = MEO_BOTH;
break;
}
break;
#ifdef WITH_TRANSCODING
case CSH_LOOKUP("T38"):
case CSH_LOOKUP("T.38"):
case CSH_LOOKUP("t38"):
case CSH_LOOKUP("t.38"):
call_ng_flags_list(out, value, ng_t38_option, NULL);
break;
case CSH_LOOKUP("DTMF-security"):
case CSH_LOOKUP("dtmf-security"):
case CSH_LOOKUP("DTMF security"):
case CSH_LOOKUP("dtmf security"):
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("drop"):
out->block_dtmf_mode = BLOCK_DTMF_DROP;
break;
case CSH_LOOKUP("silence"):
out->block_dtmf_mode = BLOCK_DTMF_SILENCE;
break;
default:
ilog(LOG_WARN, "Unknown 'DTMF-security' flag encountered: '" STR_FORMAT "'",
STR_FMT(&s));
}
break;
case CSH_LOOKUP("delay-buffer"):
case CSH_LOOKUP("delay buffer"):
out->delay_buffer = bencode_get_integer_str(value, out->delay_buffer);
break;
#endif
}
}
static void call_ng_process_flags(struct sdp_ng_flags *out, bencode_item_t *input, enum call_opmode opmode) {
call_ng_flags_init(out, opmode);
call_ng_dict_iter(out, input, call_ng_main_flags);
}
void call_ng_free_flags(struct sdp_ng_flags *flags) {
if (flags->codec_except)
g_hash_table_destroy(flags->codec_except);
if (flags->codec_set)
g_hash_table_destroy(flags->codec_set);
if (flags->sdes_no)
g_hash_table_destroy(flags->sdes_no);
g_queue_clear_full(&flags->from_tags, free);
g_queue_clear_full(&flags->codec_offer, free);
g_queue_clear_full(&flags->codec_transcode, free);
g_queue_clear_full(&flags->codec_strip, free);
g_queue_clear_full(&flags->codec_accept, free);
g_queue_clear_full(&flags->codec_consume, free);
g_queue_clear_full(&flags->codec_mask, free);
}
static enum load_limit_reasons call_offer_session_limit(void) {
enum load_limit_reasons ret = LOAD_LIMIT_NONE;
rwlock_lock_r(&rtpe_config.config_lock);
if (rtpe_config.max_sessions>=0) {
rwlock_lock_r(&rtpe_callhash_lock);
if (g_hash_table_size(rtpe_callhash) -
atomic64_get(&rtpe_stats_gauge.foreign_sessions) >= rtpe_config.max_sessions)
{
/* foreign calls can't get rejected
* total_rejected_sess applies only to "own" sessions */
RTPE_STATS_INC(rejected_sess);
ilog(LOG_ERROR, "Parallel session limit reached (%i)",rtpe_config.max_sessions);
ret = LOAD_LIMIT_MAX_SESSIONS;
}
rwlock_unlock_r(&rtpe_callhash_lock);
}
if (ret == LOAD_LIMIT_NONE && rtpe_config.load_limit) {
int loadavg = g_atomic_int_get(&load_average);
if (loadavg >= rtpe_config.load_limit) {
ilog(LOG_WARN, "Load limit exceeded (%.2f > %.2f)",
(double) loadavg / 100.0, (double) rtpe_config.load_limit / 100.0);
ret = LOAD_LIMIT_LOAD;
}
}
if (ret == LOAD_LIMIT_NONE && rtpe_config.cpu_limit) {
int cpu = g_atomic_int_get(&cpu_usage);
if (cpu >= rtpe_config.cpu_limit) {
ilog(LOG_WARN, "CPU usage limit exceeded (%.1f%% > %.1f%%)",
(double) cpu / 100.0, (double) rtpe_config.cpu_limit / 100.0);
ret = LOAD_LIMIT_CPU;
}
}
if (ret == LOAD_LIMIT_NONE && rtpe_config.bw_limit) {
uint64_t bw = atomic64_get(&rtpe_stats.intv.bytes_user) +
atomic64_get(&rtpe_stats.intv.bytes_kernel);
if (bw >= rtpe_config.bw_limit) {
ilog(LOG_WARN, "Bandwidth limit exceeded (%" PRIu64 " > %" PRIu64 ")",
bw, rtpe_config.bw_limit);
ret = LOAD_LIMIT_BW;
}
}
rwlock_unlock_r(&rtpe_config.config_lock);
return ret;
}
static void fragment_free(struct sdp_fragment *frag) {
sdp_streams_free(&frag->streams);
call_ng_free_flags(&frag->flags);
obj_put(frag->ngbuf);
g_slice_free1(sizeof(*frag), frag);
}
static void fragment_key_free(void *p) {
struct fragment_key *k = p;
g_free(k->call_id.s);
g_free(k->from_tag.s);
g_slice_free1(sizeof(*k), k);
}
static void queue_sdp_fragment(struct ng_buffer *ngbuf, GQueue *streams, struct sdp_ng_flags *flags) {
ilog(LOG_DEBUG, "Queuing up SDP fragment for " STR_FORMAT_M "/" STR_FORMAT_M,
STR_FMT_M(&flags->call_id), STR_FMT_M(&flags->from_tag));
struct fragment_key *k = g_slice_alloc0(sizeof(*k));
str_init_dup_str(&k->call_id, &flags->call_id);
str_init_dup_str(&k->from_tag, &flags->from_tag);
struct sdp_fragment *frag = g_slice_alloc0(sizeof(*frag));
frag->received = rtpe_now;
frag->ngbuf = obj_get(ngbuf);
frag->streams = *streams;
frag->flags = *flags;
g_queue_init(streams);
ZERO(*flags);
mutex_lock(&sdp_fragments_lock);
GQueue *frags = g_hash_table_lookup_queue_new(sdp_fragments, k, fragment_key_free);
g_queue_push_tail(frags, frag);
mutex_unlock(&sdp_fragments_lock);
}
#define MAX_FRAG_AGE 3000000
static void dequeue_sdp_fragments(struct call_monologue *dialogue[2]) {
struct fragment_key k;
ZERO(k);
k.call_id = dialogue[0]->call->callid;
k.from_tag = dialogue[0]->tag;
mutex_lock(&sdp_fragments_lock);
GQueue *frags = g_hash_table_lookup(sdp_fragments, &k);
if (!frags) {
mutex_unlock(&sdp_fragments_lock);
return;
}
g_hash_table_remove(sdp_fragments, &k);
// we own the queue now
mutex_unlock(&sdp_fragments_lock);
struct sdp_fragment *frag;
while ((frag = g_queue_pop_head(frags))) {
if (timeval_diff(&rtpe_now, &frag->received) > MAX_FRAG_AGE)
goto next;
ilog(LOG_DEBUG, "Dequeuing SDP fragment for " STR_FORMAT_M "/" STR_FORMAT_M,
STR_FMT_M(&k.call_id), STR_FMT_M(&k.from_tag));
monologue_offer_answer(dialogue, &frag->streams, &frag->flags);
next:
fragment_free(frag);
}
g_queue_free(frags);
}
static gboolean fragment_check_cleanup(void *k, void *v, void *p) {
int all = GPOINTER_TO_INT(p);
struct fragment_key *key = k;
GQueue *frags = v;
if (!key || !frags)
return TRUE;
while (frags->length) {
struct sdp_fragment *frag = frags->head->data;
if (!all && timeval_diff(&rtpe_now, &frag->received) <= MAX_FRAG_AGE)
break;
g_queue_pop_head(frags);
fragment_free(frag);
}
if (!frags->length) {
g_queue_free(frags);
return TRUE;
}
return FALSE;
}
static void fragments_cleanup(int all) {
mutex_lock(&sdp_fragments_lock);
g_hash_table_foreach_remove(sdp_fragments, fragment_check_cleanup, GINT_TO_POINTER(all));
mutex_unlock(&sdp_fragments_lock);
}
void save_last_sdp(struct call_monologue *ml, str *sdp, GQueue *parsed, GQueue *streams) {
str_free_dup(&ml->last_in_sdp);
ml->last_in_sdp = *sdp;
*sdp = STR_NULL;
sdp_free(&ml->last_in_sdp_parsed);
ml->last_in_sdp_parsed = *parsed;
g_queue_init(parsed);
sdp_streams_free(&ml->last_in_sdp_streams);
ml->last_in_sdp_streams = *streams;
g_queue_init(streams);
}
static const char *call_offer_answer_ng(struct ng_buffer *ngbuf, bencode_item_t *input,
bencode_item_t *output, enum call_opmode opmode, const char* addr,
const endpoint_t *sin)
{
const char *errstr;
AUTO_CLEANUP(str sdp, str_free_dup) = STR_NULL;
AUTO_CLEANUP(GQueue parsed, sdp_free) = G_QUEUE_INIT;
AUTO_CLEANUP(GQueue streams, sdp_streams_free) = G_QUEUE_INIT;
struct call *call;
struct call_monologue *dialogue[2];
int ret;
AUTO_CLEANUP(struct sdp_ng_flags flags, call_ng_free_flags);
struct sdp_chopper *chopper;
call_ng_process_flags(&flags, input, opmode);
if (!flags.sdp.s)
return "No SDP body in message";
if (!flags.call_id.s)
return "No call-id in message";
if (!flags.from_tag.s)
return "No from-tag in message";
if (opmode == OP_ANSWER) {
if (!flags.to_tag.s)
return "No to-tag in message";
str_swap(&flags.to_tag, &flags.from_tag);
}
str_init_dup_str(&sdp, &flags.sdp);
errstr = "Failed to parse SDP";
if (sdp_parse(&sdp, &parsed, &flags))
goto out;
if (flags.loop_protect && sdp_is_duplicate(&parsed)) {
ilog(LOG_INFO, "Ignoring message as SDP has already been processed by us");
bencode_dictionary_add_str(output, "sdp", &flags.sdp);
errstr = NULL;
goto out;
}
errstr = "Incomplete SDP specification";
if (sdp_streams(&parsed, &streams, &flags))
goto out;
/* OP_ANSWER; OP_OFFER && !IS_FOREIGN_CALL */
call = call_get(&flags.call_id);
// SDP fragments for trickle ICE must always operate on an existing call
if (!call && opmode == OP_OFFER && flags.fragment) {
queue_sdp_fragment(ngbuf, &streams, &flags);
errstr = NULL;
goto out;
}
if (opmode == OP_OFFER && !call) {
enum load_limit_reasons limit = call_offer_session_limit();
if (limit != LOAD_LIMIT_NONE) {
if (!flags.supports_load_limit)
errstr = "Parallel session limit reached"; // legacy protocol
else
errstr = magic_load_limit_strings[limit];
goto out;
}
call = call_get_or_create(&flags.call_id, false, false);
}
errstr = "Unknown call-id";
if (!call)
goto out;
if (flags.debug)
call->debug = 1;
if (rtpe_config.active_switchover && IS_FOREIGN_CALL(call))
call_make_own_foreign(call, false);
updated_created_from(call, addr, sin);
if (flags.xmlrpc_callback.family)
call->xmlrpc_callback = flags.xmlrpc_callback;
/* At least the random ICE strings are contained within the call struct, so we
* need to hold a ref until we're done sending the reply */
call_bencode_hold_ref(call, output);
errstr = "Invalid dialogue association";
if (call_get_mono_dialogue(dialogue, call, &flags.from_tag, &flags.to_tag,
flags.via_branch.s ? &flags.via_branch : NULL)) {
rwlock_unlock_w(&call->master_lock);
obj_put(call);
goto out;
}
if (opmode == OP_OFFER) {
dialogue[0]->tagtype = FROM_TAG;
} else {
dialogue[0]->tagtype = TO_TAG;
}
chopper = sdp_chopper_new(&sdp);
bencode_buffer_destroy_add(output->buffer, (free_func_t) sdp_chopper_destroy, chopper);
detect_setup_recording(call, &flags.record_call_str, &flags.metadata);
if (flags.record_call) {
call->recording_on = 1;
recording_start(call, NULL, &flags.metadata, NULL);
}
if (flags.drop_traffic_start) {
call->drop_traffic = 1;
}
if (flags.drop_traffic_stop) {
call->drop_traffic = 0;
}
int do_dequeue = 1;
ret = monologue_offer_answer(dialogue, &streams, &flags);
if (!ret) {
// SDP fragments for trickle ICE are consumed with no replacement returned
if (!flags.fragment)
ret = sdp_replace(chopper, &parsed, dialogue[1], &flags);
}
else if (ret == ERROR_NO_ICE_AGENT && flags.fragment) {
queue_sdp_fragment(ngbuf, &streams, &flags);
ret = 0;
do_dequeue = 0;
}
if (!ret)
save_last_sdp(dialogue[0], &sdp, &parsed, &streams);
struct recording *recording = call->recording;
if (recording != NULL) {
meta_write_sdp_before(recording, &sdp, dialogue[0], opmode);
meta_write_sdp_after(recording, chopper->output,
dialogue[0], opmode);
recording_response(recording, output);
}
if (do_dequeue)
dequeue_sdp_fragments(dialogue);
rwlock_unlock_w(&call->master_lock);
if (!flags.no_redis_update) {
redis_update_onekey(call, rtpe_redis_write);
} else {
ilog(LOG_DEBUG, "Not updating Redis due to present no-redis-update flag");
}
obj_put(call);
gettimeofday(&(dialogue[0]->started), NULL);
errstr = "Error rewriting SDP";
if (ret == ERROR_NO_FREE_PORTS || ret == ERROR_NO_FREE_LOGS) {
ilog(LOG_ERR, "Destroying call");
errstr = "Ran out of ports";
call_destroy(call);
}
if (ret)
goto out;
if (chopper->output->len)
bencode_dictionary_add_string_len(output, "sdp", chopper->output->str, chopper->output->len);
errstr = NULL;
out:
return errstr;
}
const char *call_offer_ng(struct ng_buffer *ngbuf, bencode_item_t *input, bencode_item_t *output,
const char* addr,
const endpoint_t *sin)
{
return call_offer_answer_ng(ngbuf, input, output, OP_OFFER, addr, sin);
}
const char *call_answer_ng(struct ng_buffer *ngbuf, bencode_item_t *input, bencode_item_t *output) {
return call_offer_answer_ng(ngbuf, input, output, OP_ANSWER, NULL, NULL);
}
const char *call_delete_ng(bencode_item_t *input, bencode_item_t *output) {
str fromtag, totag, viabranch, callid;
bencode_item_t *flags, *it;
int fatal = 0, delete_delay;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
bencode_dictionary_get_str(input, "from-tag", &fromtag);
bencode_dictionary_get_str(input, "to-tag", &totag);
bencode_dictionary_get_str(input, "via-branch", &viabranch);
flags = bencode_dictionary_get_expect(input, "flags", BENCODE_LIST);
if (flags) {
for (it = flags->child; it; it = it->sibling) {
if (!bencode_strcmp(it, "fatal"))
fatal = 1;
}
}
delete_delay = bencode_dictionary_get_int_str(input, "delete-delay", -1);
if (delete_delay == -1) {
delete_delay = bencode_dictionary_get_int_str(input, "delete delay", -1);
if (delete_delay == -1) {
/* legacy support */
str s;
bencode_dictionary_get_str(input, "delete-delay", &s);
if (s.s)
delete_delay = str_to_i(&s, -1);
}
}
if (call_delete_branch(&callid, &viabranch, &fromtag, &totag, output, delete_delay)) {
if (fatal)
return "Call-ID not found or tags didn't match";
bencode_dictionary_add_string(output, "warning", "Call-ID not found or tags didn't match");
}
return NULL;
}
static void ng_stats(bencode_item_t *d, const struct stream_stats *s, struct stream_stats *totals) {
bencode_dictionary_add_integer(d, "packets", atomic64_get(&s->packets));
bencode_dictionary_add_integer(d, "bytes", atomic64_get(&s->bytes));
bencode_dictionary_add_integer(d, "errors", atomic64_get(&s->errors));
if (!totals)
return;
atomic64_add_na(&totals->packets, atomic64_get(&s->packets));
atomic64_add_na(&totals->bytes, atomic64_get(&s->bytes));
atomic64_add_na(&totals->errors, atomic64_get(&s->errors));
}
static void ng_stats_endpoint(bencode_item_t *dict, const endpoint_t *ep) {
if (!ep->address.family)
return;
bencode_dictionary_add_string(dict, "family", ep->address.family->name);
bencode_dictionary_add_string_dup(dict, "address", sockaddr_print_buf(&ep->address));
bencode_dictionary_add_integer(dict, "port", ep->port);
}
#define BF_PS(k, f) if (PS_ISSET(ps, f)) bencode_list_add_string(flags, k)
static void ng_stats_stream(bencode_item_t *list, const struct packet_stream *ps,
struct call_stats *totals)
{
bencode_item_t *dict = NULL, *flags;
struct stream_stats *s;
if (!list)
goto stats;
dict = bencode_list_add_dictionary(list);
if (ps->selected_sfd) {
bencode_dictionary_add_integer(dict, "local port", ps->selected_sfd->socket.local.port);
bencode_dictionary_add_string_dup(dict, "local address",
sockaddr_print_buf(&ps->selected_sfd->socket.local.address));
bencode_dictionary_add_string(dict, "family", ps->selected_sfd->socket.local.address.family->name);
}
ng_stats_endpoint(bencode_dictionary_add_dictionary(dict, "endpoint"), &ps->endpoint);
ng_stats_endpoint(bencode_dictionary_add_dictionary(dict, "advertised endpoint"),
&ps->advertised_endpoint);
if (ps->crypto.params.crypto_suite)
bencode_dictionary_add_string(dict, "crypto suite",
ps->crypto.params.crypto_suite->name);
bencode_dictionary_add_integer(dict, "last packet", atomic64_get(&ps->last_packet));
flags = bencode_dictionary_add_list(dict, "flags");
BF_PS("RTP", RTP);
BF_PS("RTCP", RTCP);
BF_PS("fallback RTCP", FALLBACK_RTCP);
BF_PS("filled", FILLED);
BF_PS("confirmed", CONFIRMED);
BF_PS("kernelized", KERNELIZED);
BF_PS("no kernel support", NO_KERNEL_SUPPORT);
BF_PS("DTLS fingerprint verified", FINGERPRINT_VERIFIED);
BF_PS("strict source address", STRICT_SOURCE);
BF_PS("media handover", MEDIA_HANDOVER);
BF_PS("ICE", ICE);
// XXX convert to list output?
if (ps->ssrc_in[0])
bencode_dictionary_add_integer(dict, "SSRC", ps->ssrc_in[0]->parent->h.ssrc);
stats:
if (totals->last_packet < atomic64_get(&ps->last_packet))
totals->last_packet = atomic64_get(&ps->last_packet);
/* XXX distinguish between input and output */
s = &totals->totals[0];
if (!PS_ISSET(ps, RTP))
s = &totals->totals[1];
ng_stats(bencode_dictionary_add_dictionary(dict, "stats"), &ps->stats, s);
}
#define BF_M(k, f) if (MEDIA_ISSET(m, f)) bencode_list_add_string(flags, k)
static void ng_stats_media(bencode_item_t *list, const struct call_media *m,
struct call_stats *totals)
{
bencode_item_t *dict, *streams = NULL, *flags;
GList *l;
struct packet_stream *ps;
const struct rtp_payload_type *rtp_pt = NULL;
if (!list)
goto stats;
rtp_pt = __rtp_stats_codec((struct call_media *)m);
dict = bencode_list_add_dictionary(list);
bencode_dictionary_add_integer(dict, "index", m->index);
bencode_dictionary_add_str(dict, "type", &m->type);
if (m->protocol)
bencode_dictionary_add_string(dict, "protocol", m->protocol->name);
if (rtp_pt)
bencode_dictionary_add_str_dup(dict, "codec", &rtp_pt->encoding_with_params);
streams = bencode_dictionary_add_list(dict, "streams");
flags = bencode_dictionary_add_list(dict, "flags");
BF_M("initialized", INITIALIZED);
BF_M("asymmetric", ASYMMETRIC);
BF_M("send", SEND);
BF_M("recv", RECV);
BF_M("rtcp-mux", RTCP_MUX);
BF_M("DTLS-SRTP", DTLS);
BF_M("DTLS role active", SETUP_ACTIVE);
BF_M("DTLS role passive", SETUP_PASSIVE);
BF_M("SDES", SDES);
BF_M("passthrough", PASSTHRU);
BF_M("ICE", ICE);
BF_M("trickle ICE", TRICKLE_ICE);
BF_M("ICE controlling", ICE_CONTROLLING);
BF_M("ICE-lite peer", ICE_LITE_PEER);
BF_M("unidirectional", UNIDIRECTIONAL);
BF_M("loop check", LOOP_CHECK);
BF_M("transcoding", TRANSCODE);
BF_M("generator/sink", GENERATOR);
stats:
for (l = m->streams.head; l; l = l->next) {
ps = l->data;
ng_stats_stream(streams, ps, totals);
}
}
static void ng_stats_monologue(bencode_item_t *dict, const struct call_monologue *ml,
struct call_stats *totals, bencode_item_t *ssrc)
{
bencode_item_t *sub, *medias = NULL;
GList *l;
struct call_media *m;
if (!ml)
return;
if (!dict)
goto stats;
if (ml->tag.len)
sub = bencode_dictionary_add_dictionary(dict, ml->tag.s);
else {
char *buf = bencode_buffer_alloc(dict->buffer, 32);
snprintf(buf, 32, "<untagged %u>", ml->unique_id);
sub = bencode_dictionary_add_dictionary(dict, buf);
}
bencode_dictionary_add_str(sub, "tag", &ml->tag);
if (ml->viabranch.s)
bencode_dictionary_add_str(sub, "via-branch", &ml->viabranch);
if (ml->label.s)
bencode_dictionary_add_str(sub, "label", &ml->label);
bencode_dictionary_add_integer(sub, "created", ml->created);
bencode_item_t *subs = bencode_dictionary_add_list(sub, "subscriptions");
for (GList *l = ml->subscriptions.head; l; l = l->next) {
struct call_subscription *cs = l->data;
bencode_item_t *sub1 = bencode_list_add_dictionary(subs);
bencode_dictionary_add_str(sub1, "tag", &cs->monologue->tag);
bencode_dictionary_add_string(sub1, "type", cs->offer_answer ? "offer/answer" : "pub/sub");
}
subs = bencode_dictionary_add_list(sub, "subscribers");
for (GList *l = ml->subscribers.head; l; l = l->next) {
struct call_subscription *cs = l->data;
bencode_item_t *sub1 = bencode_list_add_dictionary(subs);
bencode_dictionary_add_str(sub1, "tag", &cs->monologue->tag);
bencode_dictionary_add_string(sub1, "type", cs->offer_answer ? "offer/answer" : "pub/sub");
}
ng_stats_ssrc(ssrc, ml->ssrc_hash);
medias = bencode_dictionary_add_list(sub, "medias");
stats:
for (l = ml->medias.head; l; l = l->next) {
m = l->data;
ng_stats_media(medias, m, totals);
}
}
static void ng_stats_ssrc_mos_entry_common(bencode_item_t *subent, struct ssrc_stats_block *sb,
unsigned int div)
{
bencode_dictionary_add_integer(subent, "MOS", sb->mos / div);
bencode_dictionary_add_integer(subent, "round-trip time", sb->rtt / div);
bencode_dictionary_add_integer(subent, "round-trip time leg", sb->rtt_leg / div);
bencode_dictionary_add_integer(subent, "jitter", sb->jitter / div);
bencode_dictionary_add_integer(subent, "packet loss", sb->packetloss / div);
}
static void ng_stats_ssrc_mos_entry(bencode_item_t *subent, struct ssrc_stats_block *sb) {
ng_stats_ssrc_mos_entry_common(subent, sb, 1);
bencode_dictionary_add_integer(subent, "reported at", sb->reported.tv_sec);
}
static void ng_stats_ssrc_mos_entry_dict(bencode_item_t *ent, const char *label, struct ssrc_stats_block *sb) {
bencode_item_t *subent = bencode_dictionary_add_dictionary(ent, label);
ng_stats_ssrc_mos_entry(subent, sb);
}
static void ng_stats_ssrc_mos_entry_dict_avg(bencode_item_t *ent, const char *label, struct ssrc_stats_block *sb,
unsigned int div)
{
bencode_item_t *subent = bencode_dictionary_add_dictionary(ent, label);
ng_stats_ssrc_mos_entry_common(subent, sb, div);
bencode_dictionary_add_integer(subent, "samples", div);
}
static void ng_stats_ssrc(bencode_item_t *dict, struct ssrc_hash *ht) {
GList *ll = g_hash_table_get_values(ht->ht);
for (GList *l = ll; l; l = l->next) {
struct ssrc_entry_call *se = l->data;
char *tmp = bencode_buffer_alloc(dict->buffer, 12);
snprintf(tmp, 12, "%" PRIu32, se->h.ssrc);
if (bencode_dictionary_get(dict, tmp))
continue;
if (!se->stats_blocks.length || !se->lowest_mos || !se->highest_mos)
continue;
bencode_item_t *ent = bencode_dictionary_add_dictionary(dict, tmp);
bencode_dictionary_add_integer(ent, "cumulative loss", se->packets_lost);
int mos_samples = se->stats_blocks.length - se->no_mos_count;
if (mos_samples < 1) mos_samples = 1;
ng_stats_ssrc_mos_entry_dict_avg(ent, "average MOS", &se->average_mos, mos_samples);
ng_stats_ssrc_mos_entry_dict(ent, "lowest MOS", se->lowest_mos);
ng_stats_ssrc_mos_entry_dict(ent, "highest MOS", se->highest_mos);
bencode_item_t *progdict = bencode_dictionary_add_dictionary(ent, "MOS progression");
// aim for about 10 entries to the list
GList *listent = se->stats_blocks.head;
struct ssrc_stats_block *sb = listent->data;
int interval
= ((struct ssrc_stats_block *) se->stats_blocks.tail->data)->reported.tv_sec
- sb->reported.tv_sec;
interval /= 10;
bencode_dictionary_add_integer(progdict, "interval", interval);
time_t next_step = sb->reported.tv_sec;
bencode_item_t *entlist = bencode_dictionary_add_list(progdict, "entries");
for (; listent; listent = listent->next) {
sb = listent->data;
if (sb->reported.tv_sec < next_step)
continue;
next_step += interval;
bencode_item_t *ent = bencode_list_add_dictionary(entlist);
ng_stats_ssrc_mos_entry(ent, sb);
}
}
g_list_free(ll);
}
/* call must be locked */
void ng_call_stats(struct call *call, const str *fromtag, const str *totag, bencode_item_t *output,
struct call_stats *totals)
{
bencode_item_t *tags = NULL, *dict;
const str *match_tag;
GList *l;
struct call_monologue *ml;
struct call_stats t_b;
bencode_item_t *ssrc = NULL;
if (!totals)
totals = &t_b;
ZERO(*totals);
if (!output)
goto stats;
call_bencode_hold_ref(call, output);
bencode_dictionary_add_integer(output, "created", call->created.tv_sec);
bencode_dictionary_add_integer(output, "created_us", call->created.tv_usec);
bencode_dictionary_add_integer(output, "last signal", call->last_signal);
ssrc = bencode_dictionary_add_dictionary(output, "SSRC");
tags = bencode_dictionary_add_dictionary(output, "tags");
stats:
match_tag = (totag && totag->s && totag->len) ? totag : fromtag;
if (!match_tag || !match_tag->len) {
for (l = call->monologues.head; l; l = l->next) {
ml = l->data;
ng_stats_monologue(tags, ml, totals, ssrc);
}
}
else {
ml = call_get_monologue(call, match_tag);
if (ml) {
ng_stats_monologue(tags, ml, totals, ssrc);
for (GList *l = ml->subscriptions.head; l; l = l->next) {
struct call_subscription *cs = l->data;
ng_stats_monologue(tags, cs->monologue, totals, ssrc);
}
}
}
if (!output)
return;
dict = bencode_dictionary_add_dictionary(output, "totals");
ng_stats(bencode_dictionary_add_dictionary(dict, "RTP"), &totals->totals[0], NULL);
ng_stats(bencode_dictionary_add_dictionary(dict, "RTCP"), &totals->totals[1], NULL);
}
static void ng_list_calls(bencode_item_t *output, long long int limit) {
GHashTableIter iter;
gpointer key, value;
rwlock_lock_r(&rtpe_callhash_lock);
g_hash_table_iter_init (&iter, rtpe_callhash);
while (limit-- && g_hash_table_iter_next (&iter, &key, &value)) {
bencode_list_add_str_dup(output, key);
}
rwlock_unlock_r(&rtpe_callhash_lock);
}
const char *call_query_ng(bencode_item_t *input, bencode_item_t *output) {
str callid, fromtag, totag;
struct call *call;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
call = call_get_opmode(&callid, OP_OTHER);
if (!call)
return "Unknown call-id";
bencode_dictionary_get_str(input, "from-tag", &fromtag);
bencode_dictionary_get_str(input, "to-tag", &totag);
ng_call_stats(call, &fromtag, &totag, output, NULL);
rwlock_unlock_w(&call->master_lock);
obj_put(call);
return NULL;
}
const char *call_list_ng(bencode_item_t *input, bencode_item_t *output) {
bencode_item_t *calls = NULL;
long long int limit;
limit = bencode_dictionary_get_int_str(input, "limit", 32);
if (limit < 0) {
return "invalid limit, must be >= 0";
}
calls = bencode_dictionary_add_list(output, "calls");
ng_list_calls(calls, limit);
return NULL;
}
const char *call_start_recording_ng(bencode_item_t *input, bencode_item_t *output) {
str callid;
struct call *call;
str metadata;
str output_dest;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
bencode_dictionary_get_str(input, "metadata", &metadata);
bencode_dictionary_get_str(input, "output-destination", &output_dest);
call = call_get_opmode(&callid, OP_OTHER);
if (!call)
return "Unknown call-id";
call->recording_on = 1;
recording_start(call, NULL, &metadata, &output_dest);
rwlock_unlock_w(&call->master_lock);
obj_put(call);
return NULL;
}
const char *call_stop_recording_ng(bencode_item_t *input, bencode_item_t *output) {
str callid;
struct call *call;
str metadata;
if (!bencode_dictionary_get_str(input, "call-id", &callid))
return "No call-id in message";
bencode_dictionary_get_str(input, "metadata", &metadata);
call = call_get_opmode(&callid, OP_OTHER);
if (!call)
return "Unknown call-id";
call->recording_on = 0;
recording_stop(call, &metadata);
rwlock_unlock_w(&call->master_lock);
obj_put(call);
return NULL;
}
static const char *media_block_match1(struct call *call, struct call_monologue **monologue,
struct sdp_ng_flags *flags)
{
if (flags->label.s) {
*monologue = g_hash_table_lookup(call->labels, &flags->label);
if (!*monologue)
return "No monologue matching the given label";
}
else if (flags->address.s) {
sockaddr_t addr;
if (sockaddr_parse_any_str(&addr, &flags->address))
return "Failed to parse network address";
// walk our structures to find a matching stream
for (GList *l = call->monologues.head; l; l = l->next) {
*monologue = l->data;
for (GList *k = (*monologue)->medias.head; k; k = k->next) {
struct call_media *media = k->data;
if (!media->streams.head)
continue;
struct packet_stream *ps = media->streams.head->data;
if (!sockaddr_eq(&addr, &ps->advertised_endpoint.address))
continue;
ilog(LOG_DEBUG, "Matched address %s%s%s to tag '" STR_FORMAT_M "'",
FMT_M(sockaddr_print_buf(&addr)), STR_FMT_M(&(*monologue)->tag));
goto found;
}
}
return "Failed to match address to any tag";
found:
;
}
else if (flags->from_tag.s) {
*monologue = call_get_monologue(call, &flags->from_tag);
if (!*monologue)
return "From-tag given, but no such tag exists";
}
if (*monologue)
__monologue_unkernelize(*monologue);
return NULL;
}
static const char *media_block_match(struct call **call, struct call_monologue **monologue,
struct sdp_ng_flags *flags, bencode_item_t *input, enum call_opmode opmode)
{
struct sdp_ng_flags flags_store;
if (!flags)
flags = &flags_store;
*call = NULL;
*monologue = NULL;
call_ng_process_flags(flags, input, opmode);
if (!flags->call_id.s)
return "No call-id in message";
*call = call_get_opmode(&flags->call_id, opmode);
if (!*call)
return "Unknown call-ID";
// directional?
if (flags->all) // explicitly non-directional, so skip the rest
return NULL;
const char *err = media_block_match1(*call, monologue, flags);
if (err)
return err;
// for generic ops, handle set-label here if given
if (opmode == OP_OTHER && flags->set_label.len && *monologue) {
call_str_cpy(*call, &(*monologue)->label, &flags->set_label);
g_hash_table_replace((*call)->labels, &(*monologue)->label, *monologue);
}
return NULL;
}
static void add_ml_to_sub_list(GQueue *q, struct call_monologue *ml) {
struct call_subscription *cs = g_slice_alloc0(sizeof(*cs));
cs->monologue = ml;
g_queue_push_tail(q, cs);
}
static const char *media_block_match_mult(struct call **call, GQueue *mls,
struct sdp_ng_flags *flags, bencode_item_t *input, enum call_opmode opmode)
{
call_ng_process_flags(flags, input, opmode);
if (!flags->call_id.s)
return "No call-id in message";
*call = call_get_opmode(&flags->call_id, opmode);
if (!*call)
return "Unknown call-ID";
if (flags->all) {
// get and add all offer/answer mls
for (GList *l = (*call)->monologues.head; l; l = l->next) {
struct call_monologue *ml = l->data;
if (ml->tagtype != FROM_TAG && ml->tagtype != TO_TAG)
continue;
add_ml_to_sub_list(mls, ml);
}
return NULL;
}
// is a single ml given?
struct call_monologue *ml = NULL;
const char *err = media_block_match1(*call, &ml, flags);
if (err)
return err;
if (ml) {
add_ml_to_sub_list(mls, ml);
return NULL;
}
// handle from-tag list
for (GList *l = flags->from_tags.head; l; l = l->next) {
str *s = l->data;
struct call_monologue *ml = call_get_monologue(*call, s);
if (!ml)
ilog(LOG_WARN, "Given from-tag " STR_FORMAT_M " not found", STR_FMT_M(s));
else
add_ml_to_sub_list(mls, ml);
}
if (!mls->length)
return "No monologues matched";
return NULL;
}
// XXX these are all identical - unify and use a flags int and/or callback
const char *call_start_forwarding_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Start forwarding for single party (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->rec_forwarding = 1;
}
else {
ilog(LOG_INFO, "Start forwarding (entire call)");
call->rec_forwarding = 1;
}
recording_start(call, NULL, &flags.metadata, NULL);
return NULL;
}
const char *call_stop_forwarding_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Stop forwarding for single party (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->rec_forwarding = 0;
}
else {
ilog(LOG_INFO, "Stop forwarding (entire call)");
call->rec_forwarding = 0;
if (flags.all) {
for (GList *l = call->monologues.head; l; l = l->next) {
monologue = l->data;
monologue->rec_forwarding = 0;
}
}
}
recording_stop(call, NULL);
return NULL;
}
const char *call_block_dtmf_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
enum block_dtmf_mode mode = BLOCK_DTMF_DROP;
if (flags.block_dtmf_mode)
mode = flags.block_dtmf_mode;
if (monologue) {
ilog(LOG_INFO, "Blocking directional DTMF (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->block_dtmf = mode;
}
else {
ilog(LOG_INFO, "Blocking DTMF (entire call)");
call->block_dtmf = mode;
}
if (is_pcm_dtmf_block_mode(mode) || flags.delay_buffer >= 0) {
if (monologue) {
if (flags.delay_buffer >= 0) {
for (GList *l = monologue->medias.head; l; l = l->next) {
struct call_media *media = l->data;
media->buffer_delay = flags.delay_buffer;
}
}
monologue->detect_dtmf = flags.detect_dtmf;
codec_update_all_handlers(monologue);
}
else
for (GList *l = call->monologues.head; l; l = l->next) {
struct call_monologue *ml = l->data;
ml->detect_dtmf = flags.detect_dtmf;
if (flags.delay_buffer >= 0) {
for (GList *k = ml->medias.head; k; k = k->next) {
struct call_media *media = k->data;
media->buffer_delay = flags.delay_buffer;
}
}
codec_update_all_handlers(ml);
}
}
return NULL;
}
const char *call_unblock_dtmf_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Unblocking directional DTMF (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
enum block_dtmf_mode prev_mode = monologue->block_dtmf;
monologue->block_dtmf = BLOCK_DTMF_OFF;
if (is_pcm_dtmf_block_mode(prev_mode) || flags.delay_buffer >= 0) {
if (flags.delay_buffer >= 0) {
for (GList *l = monologue->medias.head; l; l = l->next) {
struct call_media *media = l->data;
media->buffer_delay = flags.delay_buffer;
}
}
monologue->detect_dtmf = flags.detect_dtmf;
codec_update_all_handlers(monologue);
}
}
else {
ilog(LOG_INFO, "Unblocking DTMF (entire call)");
enum block_dtmf_mode prev_mode = call->block_dtmf;
call->block_dtmf = BLOCK_DTMF_OFF;
if (flags.all || is_pcm_dtmf_block_mode(prev_mode) || flags.delay_buffer >= 0) {
for (GList *l = call->monologues.head; l; l = l->next) {
monologue = l->data;
enum block_dtmf_mode prev_ml_mode = BLOCK_DTMF_OFF;
if (flags.all) {
prev_ml_mode = monologue->block_dtmf;
monologue->block_dtmf = BLOCK_DTMF_OFF;
}
if (flags.delay_buffer >= 0) {
for (GList *k = monologue->medias.head; k; k = k->next) {
struct call_media *media = k->data;
media->buffer_delay = flags.delay_buffer;
}
}
monologue->detect_dtmf = flags.detect_dtmf;
if (is_pcm_dtmf_block_mode(prev_ml_mode) || is_pcm_dtmf_block_mode(prev_mode)
|| flags.delay_buffer >= 0)
codec_update_all_handlers(monologue);
}
}
}
return NULL;
}
const char *call_block_media_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Blocking directional media (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->block_media = 1;
__monologue_unkernelize(monologue);
}
else {
ilog(LOG_INFO, "Blocking media (entire call)");
call->block_media = 1;
__call_unkernelize(call);
}
return NULL;
}
const char *call_unblock_media_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Unblocking directional media (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->block_media = 0;
__monologue_unkernelize(monologue);
}
else {
ilog(LOG_INFO, "Unblocking media (entire call)");
call->block_media = 0;
if (flags.all) {
for (GList *l = call->monologues.head; l; l = l->next) {
monologue = l->data;
monologue->block_media = 0;
}
}
__call_unkernelize(call);
}
return NULL;
}
const char *call_silence_media_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Silencing directional media (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->silence_media = 1;
__monologue_unkernelize(monologue);
}
else {
ilog(LOG_INFO, "Blocking media (entire call)");
call->silence_media = 1;
__call_unkernelize(call);
}
return NULL;
}
const char *call_unsilence_media_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
struct call_monologue *monologue;
const char *errstr = NULL;
struct sdp_ng_flags flags;
errstr = media_block_match(&call, &monologue, &flags, input, OP_OTHER);
if (errstr)
return errstr;
if (monologue) {
ilog(LOG_INFO, "Unsilencing directional media (tag '" STR_FORMAT_M "')",
STR_FMT_M(&monologue->tag));
monologue->silence_media = 0;
__monologue_unkernelize(monologue);
}
else {
ilog(LOG_INFO, "Unsilencing media (entire call)");
call->silence_media = 0;
if (flags.all) {
for (GList *l = call->monologues.head; l; l = l->next) {
monologue = l->data;
monologue->silence_media = 0;
}
}
__call_unkernelize(call);
}
return NULL;
}
#ifdef WITH_TRANSCODING
static const char *play_media_select_party(struct call **call, GQueue *monologues,
bencode_item_t *input)
{
struct call_monologue *monologue;
struct sdp_ng_flags flags;
g_queue_init(monologues);
const char *err = media_block_match(call, &monologue, &flags, input, OP_OTHER);
if (err)
return err;
if (flags.all)
g_queue_append(monologues, &(*call)->monologues);
else if (!monologue)
return "No participant party specified";
else
g_queue_push_tail(monologues, monologue);
return NULL;
}
#endif
const char *call_play_media_ng(bencode_item_t *input, bencode_item_t *output) {
#ifdef WITH_TRANSCODING
str str;
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
AUTO_CLEANUP(GQueue monologues, g_queue_clear);
const char *err = NULL;
long long db_id;
long long repeat_times = 1;
err = play_media_select_party(&call, &monologues, input);
if (err)
return err;
for (GList *l = monologues.head; l; l = l->next) {
struct call_monologue *monologue = l->data;
if (!monologue->player)
monologue->player = media_player_new(monologue);
repeat_times = bencode_dictionary_get_int_str(input, "repeat-times", 1);
if (bencode_dictionary_get_str(input, "file", &str)) {
if (media_player_play_file(monologue->player, &str,repeat_times))
return "Failed to start media playback from file";
}
else if (bencode_dictionary_get_str(input, "blob", &str)) {
if (media_player_play_blob(monologue->player, &str,repeat_times))
return "Failed to start media playback from blob";
}
else if ((db_id = bencode_dictionary_get_int_str(input, "db-id", 0)) > 0) {
if (media_player_play_db(monologue->player, db_id,repeat_times))
return "Failed to start media playback from database";
}
else
return "No media file specified";
if (l == monologues.head && monologue->player->duration)
bencode_dictionary_add_integer(output, "duration", monologue->player->duration);
}
return NULL;
#else
return "unsupported";
#endif
}
const char *call_stop_media_ng(bencode_item_t *input, bencode_item_t *output) {
#ifdef WITH_TRANSCODING
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
AUTO_CLEANUP(GQueue monologues, g_queue_clear);
const char *err = NULL;
err = play_media_select_party(&call, &monologues, input);
if (err)
return err;
for (GList *l = monologues.head; l; l = l->next) {
struct call_monologue *monologue = l->data;
if (!monologue->player)
return "Not currently playing media";
media_player_stop(monologue->player);
}
return NULL;
#else
return "unsupported";
#endif
}
const char *call_play_dtmf_ng(bencode_item_t *input, bencode_item_t *output) {
#ifdef WITH_TRANSCODING
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
AUTO_CLEANUP(GQueue monologues, g_queue_clear);
str str;
const char *err = NULL;
err = play_media_select_party(&call, &monologues, input);
if (err)
return err;
// validate input parameters
long long duration = bencode_dictionary_get_int_str(input, "duration", 250);
if (duration < 100) {
duration = 100;
ilog(LOG_WARN, "Invalid duration (%lli ms) specified, using 100 ms instead", duration);
}
else if (duration > 5000) {
duration = 5000;
ilog(LOG_WARN, "Invalid duration (%lli ms) specified, using 5000 ms instead", duration);
}
long long pause = bencode_dictionary_get_int_str(input, "pause", 100);
if (pause < 100) {
pause = 100;
ilog(LOG_WARN, "Invalid pause (%lli ms) specified, using 100 ms instead", pause);
}
else if (pause > 5000) {
pause = 5000;
ilog(LOG_WARN, "Invalid pause (%lli ms) specified, using 5000 ms instead", pause);
}
long long code = bencode_dictionary_get_int_str(input, "code", -1);
if (code == -1) {
// try a string code
if (!bencode_dictionary_get_str(input, "code", &str))
return "No valid 'code' specified";
if (str.len != 1)
return "Given 'code' is not a single digit";
code = dtmf_code_from_char(str.s[0]);
if (code == -1)
return "Invalid 'code' character";
}
else if (code < 0)
return "Out of range 'code' specified";
else if (code > 15)
return "Out of range 'code' specified";
long long volume = bencode_dictionary_get_int_str(input, "volume", 8);
if (volume > 0)
volume *= -1;
for (GList *l = monologues.head; l; l = l->next) {
struct call_monologue *monologue = l->data;
// find a usable output media
struct call_media *media;
for (GList *l = monologue->medias.head; l; l = l->next) {
media = l->data;
if (media->type_id != MT_AUDIO)
continue;
// if (!media->dtmf_injector)
// continue;
goto found;
}
return "Monologue has no media capable of DTMF injection";
// XXX fall back to generating a secondary stream
found:
for (GList *k = monologue->subscribers.head; k; k = k->next) {
struct call_subscription *cs = k->data;
struct call_monologue *dialogue = cs->monologue;
struct call_media *sink = NULL;
for (GList *m = dialogue->medias.head; m; m = m->next) {
sink = m->data;
if (sink->type_id != MT_AUDIO)
continue;
goto found_sink;
}
return "Sink monologue has no media capable of DTMF playback";
found_sink:
err = dtmf_inject(media, code, volume, duration, pause, sink);
if (err)
return err;
}
}
return NULL;
#else
return "unsupported";
#endif
}
const char *call_publish_ng(bencode_item_t *input, bencode_item_t *output, const char *addr,
const endpoint_t *sin)
{
AUTO_CLEANUP(struct sdp_ng_flags flags, call_ng_free_flags);
AUTO_CLEANUP(GQueue parsed, sdp_free) = G_QUEUE_INIT;
AUTO_CLEANUP(GQueue streams, sdp_streams_free) = G_QUEUE_INIT;
AUTO_CLEANUP(str sdp_in, str_free_dup) = STR_NULL;
AUTO_CLEANUP(str sdp_out, str_free_dup) = STR_NULL;
call_ng_process_flags(&flags, input, OP_PUBLISH);
if (!flags.sdp.s)
return "No SDP body in message";
if (!flags.call_id.s)
return "No call-id in message";
if (!flags.from_tag.s)
return "No from-tag in message";
str_init_dup_str(&sdp_in, &flags.sdp);
if (sdp_parse(&sdp_in, &parsed, &flags))
return "Failed to parse SDP";
if (sdp_streams(&parsed, &streams, &flags))
return "Incomplete SDP specification";
struct call *call = call_get_or_create(&flags.call_id, false, false);
updated_created_from(call, addr, sin);
struct call_monologue *ml = call_get_or_create_monologue(call, &flags.from_tag);
int ret = monologue_publish(ml, &streams, &flags);
if (ret)
ilog(LOG_ERR, "Publish error"); // XXX close call? handle errors?
ret = sdp_create(&sdp_out, ml, &flags);
if (!ret) {
save_last_sdp(ml, &sdp_in, &parsed, &streams);
bencode_buffer_destroy_add(output->buffer, g_free, sdp_out.s);
bencode_dictionary_add_str(output, "sdp", &sdp_out);
sdp_out = STR_NULL; // ownership passed to output
}
rwlock_unlock_w(&call->master_lock);
obj_put(call);
if (!ret)
return NULL;
return "Failed to create SDP";
}
const char *call_subscribe_request_ng(bencode_item_t *input, bencode_item_t *output) {
const char *err = NULL;
AUTO_CLEANUP(struct sdp_ng_flags flags, call_ng_free_flags);
char rand_buf[65];
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
AUTO_CLEANUP(GQueue srcs, call_subscriptions_clear) = G_QUEUE_INIT;
AUTO_CLEANUP(str sdp_out, str_free_dup) = STR_NULL;
// get source monologue
err = media_block_match_mult(&call, &srcs, &flags, input, OP_REQUEST);
if (err)
return err;
if (flags.sdp.len)
ilog(LOG_INFO, "Subscribe-request with SDP received - ignoring SDP");
if (!srcs.length)
return "No call participant specified";
// special case with just one source: we can use the original SDP
struct call_monologue *sdp_ml = NULL;
if (srcs.length == 1) {
struct call_subscription *cs = srcs.head->data;
sdp_ml = cs->monologue;
if (!sdp_ml->last_in_sdp.len || !sdp_ml->last_in_sdp_parsed.length)
sdp_ml = NULL;
}
// the `label=` option was possibly used above to select the from-tag --
// switch it out with `to-label=` or `set-label=` for monologue_subscribe_request
// below which sets the label based on `label` for a newly created monologue
flags.label = flags.set_label;
// get destination monologue
if (!flags.to_tag.len) {
// generate one
flags.to_tag = STR_CONST_INIT(rand_buf);
rand_hex_str(flags.to_tag.s, flags.to_tag.len / 2);
}
struct call_monologue *dest_ml = call_get_or_create_monologue(call, &flags.to_tag);
// rewrite SDP, or create new?
struct sdp_chopper *chopper = NULL;
if (sdp_ml) {
chopper = sdp_chopper_new(&sdp_ml->last_in_sdp);
bencode_buffer_destroy_add(output->buffer, (free_func_t) sdp_chopper_destroy, chopper);
}
int ret = monologue_subscribe_request(&srcs, dest_ml, &flags);
if (ret)
return "Failed to request subscription";
if (chopper && sdp_ml) {
ret = sdp_replace(chopper, &sdp_ml->last_in_sdp_parsed, dest_ml, &flags);
if (ret)
return "Failed to rewrite SDP";
}
else {
// create new SDP
ret = sdp_create(&sdp_out, dest_ml, &flags);
}
// place return output SDP
if (chopper) {
if (chopper->output->len)
bencode_dictionary_add_string_len(output, "sdp", chopper->output->str,
chopper->output->len);
}
else if (sdp_out.len) {
bencode_buffer_destroy_add(output->buffer, g_free, sdp_out.s);
bencode_dictionary_add_str(output, "sdp", &sdp_out);
sdp_out = STR_NULL; // ownership passed to output
}
// add single response ml tag if there's just one, but always add a list
if (srcs.length == 1) {
struct call_subscription *cs = srcs.head->data;
struct call_monologue *source_ml = cs->monologue;
bencode_dictionary_add_str_dup(output, "from-tag", &source_ml->tag);
}
bencode_item_t *tag_medias = NULL, *media_labels = NULL;
if (flags.siprec) {
tag_medias = bencode_dictionary_add_list(output, "tag-medias");
media_labels = bencode_dictionary_add_dictionary(output, "media-labels");
}
bencode_item_t *from_list = bencode_dictionary_add_list(output, "from-tags");
for (GList *l = srcs.head; l; l = l->next) {
struct call_subscription *cs = l->data;
struct call_monologue *source_ml = cs->monologue;
bencode_list_add_str_dup(from_list, &source_ml->tag);
if (tag_medias) {
bencode_item_t *tag_label = bencode_list_add_dictionary(tag_medias);
bencode_dictionary_add_str(tag_label, "tag", &source_ml->tag);
if (source_ml->label.len)
bencode_dictionary_add_str(tag_label, "label", &source_ml->label);
bencode_item_t *medias = bencode_dictionary_add_list(tag_label, "medias");
for (GList *k = source_ml->medias.head; k; k = k->next) {
struct call_media *media = k->data;
bencode_item_t *med_ent = bencode_list_add_dictionary(medias);
bencode_dictionary_add_integer(med_ent, "index", media->index);
bencode_dictionary_add_str(med_ent, "type", &media->type);
bencode_dictionary_add_str(med_ent, "label", &media->label);
if (media_labels) {
bencode_item_t *label =
bencode_dictionary_add_dictionary(media_labels, media->label.s);
bencode_dictionary_add_str(label, "tag", &source_ml->tag);
bencode_dictionary_add_integer(label, "index", media->index);
bencode_dictionary_add_str(label, "type", &media->type);
if (source_ml->label.len)
bencode_dictionary_add_str(label, "label", &source_ml->label);
}
}
}
}
bencode_dictionary_add_str_dup(output, "to-tag", &dest_ml->tag);
return NULL;
}
const char *call_subscribe_answer_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP(struct sdp_ng_flags flags, call_ng_free_flags);
AUTO_CLEANUP(GQueue parsed, sdp_free) = G_QUEUE_INIT;
AUTO_CLEANUP(GQueue streams, sdp_streams_free) = G_QUEUE_INIT;
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
call_ng_process_flags(&flags, input, OP_REQ_ANSWER);
if (!flags.call_id.s)
return "No call-id in message";
call = call_get_opmode(&flags.call_id, OP_REQ_ANSWER);
if (!call)
return "Unknown call-ID";
if (!flags.to_tag.s)
return "No to-tag in message";
if (!flags.sdp.len)
return "No SDP body in message";
// get destination monologue
struct call_monologue *dest_ml = call_get_monologue(call, &flags.to_tag);
if (!dest_ml)
return "To-tag not found";
if (sdp_parse(&flags.sdp, &parsed, &flags))
return "Failed to parse SDP";
if (sdp_streams(&parsed, &streams, &flags))
return "Incomplete SDP specification";
int ret = monologue_subscribe_answer(dest_ml, &flags, &streams);
if (ret)
return "Failed to process subscription answer";
return NULL;
}
const char *call_unsubscribe_ng(bencode_item_t *input, bencode_item_t *output) {
AUTO_CLEANUP(struct sdp_ng_flags flags, call_ng_free_flags);
AUTO_CLEANUP_NULL(struct call *call, call_unlock_release);
call_ng_process_flags(&flags, input, OP_REQ_ANSWER);
if (!flags.call_id.s)
return "No call-id in message";
call = call_get_opmode(&flags.call_id, OP_REQ_ANSWER);
if (!call)
return "Unknown call-ID";
if (!flags.to_tag.s)
return "No to-tag in message";
// get destination monologue
struct call_monologue *dest_ml = call_get_or_create_monologue(call, &flags.to_tag);
if (!dest_ml)
return "To-tag not found";
int ret = monologue_unsubscribe(dest_ml, &flags);
if (ret)
return "Failed to unsubscribe";
return NULL;
}
void call_interfaces_free() {
if (info_re) {
pcre_free(info_re);
info_re = NULL;
}
if (streams_re) {
pcre_free(streams_re);
streams_re= NULL;
}
if (info_ree) {
pcre_free_study(info_ree);
info_ree = NULL;
}
if (streams_ree) {
pcre_free_study(streams_ree);
streams_ree = NULL;
}
fragments_cleanup(1);
g_hash_table_destroy(sdp_fragments);
sdp_fragments = NULL;
mutex_destroy(&sdp_fragments_lock);
}
void call_interfaces_timer() {
fragments_cleanup(0);
}
static unsigned int frag_key_hash(const void *A) {
const struct fragment_key *a = A;
return str_hash(&a->call_id) ^ str_hash(&a->from_tag);
}
static int frag_key_eq(const void *A, const void *B) {
const struct fragment_key *a = A;
const struct fragment_key *b = B;
return str_equal(&a->call_id, &b->call_id)
&& str_equal(&a->from_tag, &b->from_tag);
}
int call_interfaces_init() {
const char *errptr;
int erroff;
info_re = pcre_compile("^([^:,]+)(?::(.*?))?(?:$|,)", PCRE_DOLLAR_ENDONLY | PCRE_DOTALL, &errptr, &erroff, NULL);
if (!info_re)
return -1;
info_ree = pcre_study(info_re, 0, &errptr);
streams_re = pcre_compile("^([\\d.]+):(\\d+)(?::(.*?))?(?:$|,)", PCRE_DOLLAR_ENDONLY | PCRE_DOTALL, &errptr, &erroff, NULL);
if (!streams_re)
return -1;
streams_ree = pcre_study(streams_re, 0, &errptr);
sdp_fragments = g_hash_table_new_full(frag_key_hash, frag_key_eq, fragment_key_free, NULL);
mutex_init(&sdp_fragments_lock);
return 0;
}
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