/* WARNING: buf must be 0 terminated (buf[len]=0) or some things might
* break (e.g.: modules/textops)
*/
int receive_msg(char* buf, unsigned int len, struct receive_info* rcv_info)
{
struct sip_msg* msg;
struct run_act_ctx ctx;
int ret;
#ifdef STATS
int skipped = 1;
struct timeval tvb, tve;
struct timezone tz;
unsigned int diff;
#endif
str inb;
inb.s = buf;
inb.len = len;
sr_event_exec(SREV_NET_DATA_IN, (void*)&inb);
len = inb.len;
msg=pkg_malloc(sizeof(struct sip_msg));
if (msg==0) {
LOG(L_ERR, "ERROR: receive_msg: no mem for sip_msg\n");
goto error00;
}
msg_no++;
/* number of vias parsed -- good for diagnostic info in replies */
via_cnt=0;
memset(msg,0, sizeof(struct sip_msg)); /* init everything to 0 */
/* fill in msg */
msg->buf=buf;
msg->len=len;
/* zero termination (termination of orig message bellow not that
useful as most of the work is done with scratch-pad; -jiri */
/* buf[len]=0; */ /* WARNING: zero term removed! */
msg->rcv=*rcv_info;
msg->id=msg_no;
msg->pid=my_pid();
msg->set_global_address=default_global_address;
msg->set_global_port=default_global_port;
if(likely(sr_msg_time==1)) msg_set_time(msg);
if (parse_msg(buf,len, msg)!=0){
if(sr_event_exec(SREV_RCV_NOSIP, (void*)msg)!=0) {
LOG(cfg_get(core, core_cfg, corelog),
"core parsing of SIP message failed (%s:%d/%d)\n",
ip_addr2a(&msg->rcv.src_ip), (int)msg->rcv.src_port,
(int)msg->rcv.proto);
sr_core_ert_run(msg, SR_CORE_ERT_RECEIVE_PARSE_ERROR);
}
goto error02;
}
DBG("After parse_msg...\n");
/* ... clear branches from previous message */
clear_branches();
if (msg->first_line.type==SIP_REQUEST){
ruri_mark_new(); /* ruri is usable for forking (not consumed yet) */
if (!IS_SIP(msg)){
if ((ret=nonsip_msg_run_hooks(msg))!=NONSIP_MSG_ACCEPT){
if (unlikely(ret==NONSIP_MSG_ERROR))
goto error03;
goto end; /* drop the message */
}
}
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in request\n");
STATS_BAD_MSG();
goto error02;
}
/* check if necessary to add receive?->moved to forward_req */
/* check for the alias stuff */
#ifdef USE_TCP
if (msg->via1->alias && cfg_get(tcp, tcp_cfg, accept_aliases) &&
(((rcv_info->proto==PROTO_TCP) && !tcp_disable)
#ifdef USE_TLS
|| ((rcv_info->proto==PROTO_TLS) && !tls_disable)
#endif
)
){
if (tcpconn_add_alias(rcv_info->proto_reserved1, msg->via1->port,
rcv_info->proto)!=0){
LOG(L_ERR, " ERROR: receive_msg: tcp alias failed\n");
/* continue */
}
}
#endif
/* skip: */
DBG("preparing to run routing scripts...\n");
#ifdef STATS
gettimeofday( & tvb, &tz );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_script_cb(msg, REQUEST_CB_TYPE)==0 )
{
STATS_REQ_FWD_DROP();
goto end; /* drop the request */
}
set_route_type(REQUEST_ROUTE);
/* exec the routing script */
if (run_top_route(main_rt.rlist[DEFAULT_RT], msg, 0)<0){
LOG(L_WARN, "WARNING: receive_msg: "
"error while trying script\n");
goto error_req;
}
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_requests++;
stats->acc_req_time += diff;
DBG("successfully ran routing scripts...(%d usec)\n", diff);
STATS_RX_REQUEST( msg->first_line.u.request.method_value );
#endif
/* execute post request-script callbacks */
exec_post_script_cb(msg, REQUEST_CB_TYPE);
}else if (msg->first_line.type==SIP_REPLY){
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in reply\n");
STATS_BAD_RPL();
goto error02;
}
#ifdef STATS
gettimeofday( & tvb, &tz );
STATS_RX_RESPONSE ( msg->first_line.u.reply.statuscode / 100 );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_script_cb(msg, ONREPLY_CB_TYPE)==0 )
{
STATS_RPL_FWD_DROP();
goto end; /* drop the reply */
}
/* exec the onreply routing script */
if (onreply_rt.rlist[DEFAULT_RT]){
set_route_type(CORE_ONREPLY_ROUTE);
ret=run_top_route(onreply_rt.rlist[DEFAULT_RT], msg, &ctx);
#ifndef NO_ONREPLY_ROUTE_ERROR
if (unlikely(ret<0)){
LOG(L_WARN, "WARNING: receive_msg: "
"error while trying onreply script\n");
goto error_rpl;
}else
#endif /* NO_ONREPLY_ROUTE_ERROR */
if (unlikely(ret==0 || (ctx.run_flags&DROP_R_F))){
STATS_RPL_FWD_DROP();
goto skip_send_reply; /* drop the message, no error */
}
}
/* send the msg */
forward_reply(msg);
skip_send_reply:
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_responses++;
stats->acc_res_time+=diff;
DBG("successfully ran reply processing...(%d usec)\n", diff);
#endif
/* execute post reply-script callbacks */
exec_post_script_cb(msg, ONREPLY_CB_TYPE);
}
end:
#ifdef STATS
skipped = 0;
#endif
/* free possible loaded avps -bogdan */
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
DBG("receive_msg: cleaning up\n");
free_sip_msg(msg);
pkg_free(msg);
#ifdef STATS
if (skipped) STATS_RX_DROPS;
#endif
return 0;
#ifndef NO_ONREPLY_ROUTE_ERROR
error_rpl:
/* execute post reply-script callbacks */
exec_post_script_cb(msg, ONREPLY_CB_TYPE);
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
goto error02;
#endif /* NO_ONREPLY_ROUTE_ERROR */
error_req:
DBG("receive_msg: error:...\n");
/* execute post request-script callbacks */
exec_post_script_cb(msg, REQUEST_CB_TYPE);
error03:
/* free possible loaded avps -bogdan */
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
error02:
free_sip_msg(msg);
pkg_free(msg);
error00:
STATS_RX_DROPS;
return -1;
}
/* WARNING: buf must be 0 terminated (buf[len]=0) or some things might
* break (e.g.: modules/textops)
*/
int receive_msg(char* buf, unsigned int len, struct receive_info* rcv_info)
{
struct sip_msg* msg;
int ret;
#ifdef STATS
int skipped = 1;
struct timeval tvb, tve;
struct timezone tz;
unsigned int diff;
#endif
msg=pkg_malloc(sizeof(struct sip_msg));
if (msg==0) {
LOG(L_ERR, "ERROR: receive_msg: no mem for sip_msg\n");
goto error00;
}
msg_no++;
/* number of vias parsed -- good for diagnostic info in replies */
via_cnt=0;
memset(msg,0, sizeof(struct sip_msg)); /* init everything to 0 */
/* fill in msg */
msg->buf=buf;
msg->len=len;
/* zero termination (termination of orig message bellow not that
useful as most of the work is done with scrath-pad; -jiri */
/* buf[len]=0; */ /* WARNING: zero term removed! */
msg->rcv=*rcv_info;
msg->id=msg_no;
msg->set_global_address=default_global_address;
msg->set_global_port=default_global_port;
if (parse_msg(buf,len, msg)!=0) {
LOG(L_ERR, "ERROR: receive_msg: parse_msg failed\n");
goto error02;
}
DBG("After parse_msg...\n");
/* ... clear branches from previous message */
clear_branches();
if (msg->first_line.type==SIP_REQUEST) {
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)) {
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in request\n");
goto error;
}
/* check if neccesarry to add receive?->moved to forward_req */
DBG("preparing to run routing scripts...\n");
#ifdef STATS
gettimeofday( & tvb, &tz );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
ret=exec_pre_cb(msg);
if (ret<=0) {
if (ret<0) goto error;
else goto end; /* drop the message -- no error -- andrei */
}
/* exec the routing script */
if (run_actions(rlist[0], msg)<0) {
LOG(L_WARN, "WARNING: receive_msg: "
"error while trying script\n");
goto error;
}
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_requests++;
stats->acc_req_time += diff;
DBG("succesfully ran routing scripts...(%d usec)\n", diff);
STATS_RX_REQUEST( msg->first_line.u.request.method_value );
#endif
} else if (msg->first_line.type==SIP_REPLY) {
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)) {
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in reply\n");
goto error;
}
#if 0
if ((msg->via2==0) || (msg->via2->error!=PARSE_OK)) {
/* no second via => error? */
LOG(L_ERR, "ERROR: receive_msg: no 2nd via found in reply\n");
goto error;
}
/* check if via1 == us */
#endif
#ifdef STATS
gettimeofday( & tvb, &tz );
STATS_RX_RESPONSE ( msg->first_line.u.reply.statuscode / 100 );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
ret=exec_pre_cb(msg);
if (ret<=0) {
if (ret<0) goto error;
else goto end; /* drop the message -- no error -- andrei */
}
/* send the msg */
forward_reply(msg);
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_responses++;
stats->acc_res_time+=diff;
DBG("succesfully ran reply processing...(%d usec)\n", diff);
#endif
}
end:
#ifdef STATS
skipped = 0;
#endif
/* execute post-script callbacks, if any; -jiri */
exec_post_cb(msg);
/* free possible loaded avps -bogdan */
reset_avps();
DBG("receive_msg: cleaning up\n");
free_sip_msg(msg);
pkg_free(msg);
#ifdef STATS
if (skipped) STATS_RX_DROPS;
#endif
return 0;
error:
DBG("error:...\n");
/* execute post-script callbacks, if any; -jiri */
exec_post_cb(msg);
/* free possible loaded avps -bogdan */
reset_avps();
error02:
free_sip_msg(msg);
pkg_free(msg);
error00:
STATS_RX_DROPS;
return -1;
}
/*! \note WARNING: buf must be 0 terminated (buf[len]=0) or some things might
* break (e.g.: modules/textops)
*/
int receive_msg(char* buf, unsigned int len, struct receive_info* rcv_info)
{
struct sip_msg* msg;
struct timeval start;
int rc;
char *tmp;
str in_buff;
in_buff.len = len;
in_buff.s = buf;
/* the raw processing callbacks can change the buffer,
further use in_buff.s and at the end try to free in_buff.s
if changed by callbacks */
run_raw_processing_cb(PRE_RAW_PROCESSING,&in_buff);
/* update the length for further processing */
len = in_buff.len;
msg=pkg_malloc(sizeof(struct sip_msg));
if (msg==0) {
LM_ERR("no pkg mem left for sip_msg\n");
goto error;
}
msg_no++;
/* number of vias parsed -- good for diagnostic info in replies */
via_cnt=0;
memset(msg,0, sizeof(struct sip_msg)); /* init everything to 0 */
/* fill in msg */
msg->buf=in_buff.s;
msg->len=len;
msg->rcv=*rcv_info;
msg->id=msg_no;
msg->set_global_address=default_global_address;
msg->set_global_port=default_global_port;
if (parse_msg(in_buff.s,len, msg)!=0){
tmp=ip_addr2a(&(rcv_info->src_ip));
LM_ERR("Unable to parse msg received from [%s:%d]\n", tmp, rcv_info->src_port);
/* if a REQUEST msg was detected (first line was succesfully parsed) we
should trigger the error route */
if ( msg->first_line.type==SIP_REQUEST && error_rlist.a!=NULL )
run_error_route(msg, 1);
goto parse_error;
}
LM_DBG("After parse_msg...\n");
start_expire_timer(start,execmsgthreshold);
/* ... clear branches from previous message */
clear_branches();
if (msg->first_line.type==SIP_REQUEST) {
update_stat( rcv_reqs, 1);
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LM_ERR("no via found in request\n");
update_stat( err_reqs, 1);
goto parse_error;
}
/* check if necessary to add receive?->moved to forward_req */
/* check for the alias stuff */
#ifdef USE_TCP
if (msg->via1->alias && tcp_accept_aliases &&
(((rcv_info->proto==PROTO_TCP) && !tcp_disable)
#ifdef USE_TLS
|| ((rcv_info->proto==PROTO_TLS) && !tls_disable)
#endif
)
){
if (tcpconn_add_alias(rcv_info->proto_reserved1, msg->via1->port,
rcv_info->proto)!=0){
LM_ERR("tcp alias failed\n");
/* continue */
}
}
#endif
LM_DBG("preparing to run routing scripts...\n");
/* set request route type --bogdan*/
set_route_type( REQUEST_ROUTE );
/* execute pre-script callbacks, if any;
* if some of the callbacks said not to continue with
* script processing, don't do so;
* if we are here basic sanity checks are already done
* (like presence of at least one via), so you can count
* on via1 being parsed in a pre-script callback --andrei
*/
rc = exec_pre_req_cb(msg);
if (rc == SCB_DROP_MSG) {
update_stat( drp_reqs, 1);
goto end; /* drop the message */
}
/* exec the routing script */
if (rc & SCB_RUN_TOP_ROUTE)
run_top_route(rlist[DEFAULT_RT].a, msg);
/* execute post request-script callbacks */
if (rc & SCB_RUN_POST_CBS)
exec_post_req_cb(msg);
} else if (msg->first_line.type==SIP_REPLY) {
update_stat( rcv_rpls, 1);
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LM_ERR("no via found in reply\n");
update_stat( err_rpls, 1);
goto parse_error;
}
/* set reply route type --bogdan*/
set_route_type( ONREPLY_ROUTE );
/* execute pre-script callbacks, if any ;
* if some of the callbacks said not to continue with
* script processing, don't do so ;
* if we are here, basic sanity checks are already done
* (like presence of at least one via), so you can count
* on via1 being parsed in a pre-script callback --andrei
*/
rc = exec_pre_rpl_cb(msg);
if (rc == SCB_DROP_MSG) {
update_stat( drp_rpls, 1);
goto end; /* drop the reply */
}
/* exec the onreply routing script */
if (rc & SCB_RUN_TOP_ROUTE && onreply_rlist[DEFAULT_RT].a &&
(run_top_route(onreply_rlist[DEFAULT_RT].a,msg) & ACT_FL_DROP)
&& msg->REPLY_STATUS < 200) {
LM_DBG("dropping provisional reply %d\n", msg->REPLY_STATUS);
update_stat( drp_rpls, 1);
goto end; /* drop the message */
} else {
/* send the msg */
forward_reply(msg);
/* TODO - TX reply stat */
}
/* execute post reply-script callbacks */
if (rc & SCB_RUN_POST_CBS)
exec_post_rpl_cb(msg);
}
end:
stop_expire_timer( start, execmsgthreshold, "msg processing",
msg->buf, msg->len, 0);
reset_longest_action_list(execmsgthreshold);
/* free possible loaded avps -bogdan */
reset_avps();
LM_DBG("cleaning up\n");
free_sip_msg(msg);
pkg_free(msg);
if (in_buff.s != buf)
pkg_free(in_buff.s);
return 0;
parse_error:
exec_parse_err_cb(msg);
free_sip_msg(msg);
pkg_free(msg);
error:
if (in_buff.s != buf)
pkg_free(in_buff.s);
return -1;
}
/**
* @brief forward SIP reply statelessy with different code and reason text
*/
static int w_sl_forward_reply(sip_msg_t* msg, str* code, str* reason)
{
char oldscode[3];
int oldncode;
int ret;
struct lump *ldel = NULL;
struct lump *ladd = NULL;
char *rbuf;
if(msg->first_line.type!=SIP_REPLY) {
LM_ERR("invalid SIP message type\n");
return -1;
}
if(code!=NULL) {
if(code->len!=3) {
LM_ERR("invalid reply code value %.*s\n", code->len, code->s);
return -1;
}
if(msg->first_line.u.reply.status.s[0]!=code->s[0]) {
LM_ERR("reply code class cannot be changed\n");
return -1;
}
if(code->s[1]<'0' || code->s[1]>'9'
|| code->s[2]<'0' || code->s[2]>'9') {
LM_ERR("invalid reply code value %.*s!\n", code->len, code->s);
return -1;
}
}
if(reason!=NULL && reason->len<=0) {
LM_ERR("invalid reply reason value\n");
return -1;
}
/* backup old values */
oldscode[0] = msg->first_line.u.reply.status.s[0];
oldscode[1] = msg->first_line.u.reply.status.s[1];
oldscode[2] = msg->first_line.u.reply.status.s[2];
oldncode = msg->first_line.u.reply.statuscode;
if(code!=NULL) {
/* update status code directly in msg buffer */
msg->first_line.u.reply.statuscode = (code->s[0]-'0')*100
+ (code->s[1]-'0')*10 + code->s[2]-'0';
msg->first_line.u.reply.status.s[0] = code->s[0];
msg->first_line.u.reply.status.s[1] = code->s[1];
msg->first_line.u.reply.status.s[2] = code->s[2];
}
if(reason!=NULL) {
ldel = del_lump(msg,
msg->first_line.u.reply.reason.s - msg->buf,
msg->first_line.u.reply.reason.len,
0);
if (ldel==NULL) {
LM_ERR("failed to add del lump\n");
ret = -1;
goto restore;
}
rbuf = (char *)pkg_malloc(reason->len);
if (rbuf==NULL) {
LM_ERR("not enough memory\n");
ret = -1;
goto restore;
}
memcpy(rbuf, reason->s, reason->len);
ladd = insert_new_lump_after(ldel, rbuf, reason->len, 0);
if (ladd==0) {
LOG(L_ERR, "failed to add reason lump: %.*s\n",
reason->len, reason->s);
pkg_free(rbuf);
ret = -1;
goto restore;
}
}
ret = forward_reply(msg);
restore:
if(reason!=NULL) {
if(ldel!=NULL) {
remove_lump(msg, ldel);
}
if(ladd!=NULL) {
remove_lump(msg, ladd);
}
}
if(code!=NULL) {
msg->first_line.u.reply.statuscode = oldncode;
msg->first_line.u.reply.status.s[0] = oldscode[0];
msg->first_line.u.reply.status.s[1] = oldscode[1];
msg->first_line.u.reply.status.s[2] = oldscode[2];
}
return (ret==0)?1:ret;
}
/** Receive message
* WARNING: buf must be 0 terminated (buf[len]=0) or some things might
* break (e.g.: modules/textops)
*/
int receive_msg(char* buf, unsigned int len, struct receive_info* rcv_info)
{
struct sip_msg* msg;
struct run_act_ctx ctx;
struct run_act_ctx *bctx;
int ret;
#ifdef STATS
int skipped = 1;
int stats_on = 1;
#else
int stats_on = 0;
#endif
struct timeval tvb, tve;
struct timezone tz;
unsigned int diff = 0;
str inb;
sr_net_info_t netinfo;
sr_kemi_eng_t *keng = NULL;
if(sr_event_enabled(SREV_NET_DATA_RECV)) {
if(sip_check_fline(buf, len)==0) {
memset(&netinfo, 0, sizeof(sr_net_info_t));
netinfo.data.s = buf;
netinfo.data.len = len;
netinfo.rcv = rcv_info;
sr_event_exec(SREV_NET_DATA_RECV, (void*)&netinfo);
}
}
inb.s = buf;
inb.len = len;
sr_event_exec(SREV_NET_DATA_IN, (void*)&inb);
len = inb.len;
msg=pkg_malloc(sizeof(struct sip_msg));
if (msg==0) {
LM_ERR("no mem for sip_msg\n");
goto error00;
}
msg_no++;
/* number of vias parsed -- good for diagnostic info in replies */
via_cnt=0;
memset(msg,0, sizeof(struct sip_msg)); /* init everything to 0 */
/* fill in msg */
msg->buf=buf;
msg->len=len;
/* zero termination (termination of orig message bellow not that
* useful as most of the work is done with scratch-pad; -jiri */
/* buf[len]=0; */ /* WARNING: zero term removed! */
msg->rcv=*rcv_info;
msg->id=msg_no;
msg->pid=my_pid();
msg->set_global_address=default_global_address;
msg->set_global_port=default_global_port;
if(likely(sr_msg_time==1)) msg_set_time(msg);
if (parse_msg(buf,len, msg)!=0){
if((ret=sr_event_exec(SREV_RCV_NOSIP, (void*)msg))<NONSIP_MSG_DROP) {
LOG(cfg_get(core, core_cfg, corelog),
"core parsing of SIP message failed (%s:%d/%d)\n",
ip_addr2a(&msg->rcv.src_ip), (int)msg->rcv.src_port,
(int)msg->rcv.proto);
sr_core_ert_run(msg, SR_CORE_ERT_RECEIVE_PARSE_ERROR);
}
else if(ret == NONSIP_MSG_DROP) goto error02;
}
parse_headers(msg, HDR_FROM_F|HDR_TO_F|HDR_CALLID_F|HDR_CSEQ_F, 0);
LM_DBG("--- received sip message - %s - call-id: [%.*s] - cseq: [%.*s]\n",
(msg->first_line.type==SIP_REQUEST)?"request":"reply",
(msg->callid && msg->callid->body.s)?msg->callid->body.len:0,
(msg->callid && msg->callid->body.s)?msg->callid->body.s:"",
(msg->cseq && msg->cseq->body.s)?msg->cseq->body.len:0,
(msg->cseq && msg->cseq->body.s)?msg->cseq->body.s:"");
/* set log prefix */
log_prefix_set(msg);
/* ... clear branches from previous message */
clear_branches();
if (msg->first_line.type==SIP_REQUEST){
ruri_mark_new(); /* ruri is usable for forking (not consumed yet) */
if (!IS_SIP(msg)){
if ((ret=nonsip_msg_run_hooks(msg))!=NONSIP_MSG_ACCEPT){
if (unlikely(ret==NONSIP_MSG_ERROR))
goto error03;
goto end; /* drop the message */
}
}
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LM_ERR("no via found in request\n");
STATS_BAD_MSG();
goto error02;
}
/* check if necessary to add receive?->moved to forward_req */
/* check for the alias stuff */
#ifdef USE_TCP
if (msg->via1->alias && cfg_get(tcp, tcp_cfg, accept_aliases) &&
(((rcv_info->proto==PROTO_TCP) && !tcp_disable)
#ifdef USE_TLS
|| ((rcv_info->proto==PROTO_TLS) && !tls_disable)
#endif
)
){
if (tcpconn_add_alias(rcv_info->proto_reserved1, msg->via1->port,
rcv_info->proto)!=0){
LM_ERR("tcp alias failed\n");
/* continue */
}
}
#endif
/* skip: */
LM_DBG("preparing to run routing scripts...\n");
if(is_printable(cfg_get(core, core_cfg, latency_cfg_log))
|| stats_on==1) {
gettimeofday( & tvb, &tz );
}
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
* script processing, don't do so
* if we are here basic sanity checks are already done
* (like presence of at least one via), so you can count
* on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_script_cb(msg, REQUEST_CB_TYPE)==0 )
{
STATS_REQ_FWD_DROP();
goto end; /* drop the request */
}
set_route_type(REQUEST_ROUTE);
/* exec the routing script */
if(unlikely(main_rt.rlist[DEFAULT_RT]==NULL)) {
keng = sr_kemi_eng_get();
if(keng==NULL) {
LM_ERR("no config routing engine registered\n");
goto error_req;
}
if(keng->froute(msg, REQUEST_ROUTE, NULL, NULL)<0) {
LM_NOTICE("negative return code from engine function\n");
}
} else {
if (run_top_route(main_rt.rlist[DEFAULT_RT], msg, 0)<0){
LM_WARN("error while trying script\n");
goto error_req;
}
}
if(is_printable(cfg_get(core, core_cfg, latency_cfg_log))
|| stats_on==1) {
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
LOG(cfg_get(core, core_cfg, latency_cfg_log),
"request-route executed in: %d usec\n", diff);
#ifdef STATS
stats->processed_requests++;
stats->acc_req_time += diff;
STATS_RX_REQUEST( msg->first_line.u.request.method_value );
#endif
}
/* execute post request-script callbacks */
exec_post_script_cb(msg, REQUEST_CB_TYPE);
}else if (msg->first_line.type==SIP_REPLY){
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LM_ERR("no via found in reply\n");
STATS_BAD_RPL();
goto error02;
}
if(is_printable(cfg_get(core, core_cfg, latency_cfg_log))
|| stats_on==1) {
gettimeofday( & tvb, &tz );
}
#ifdef STATS
STATS_RX_RESPONSE ( msg->first_line.u.reply.statuscode / 100 );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
* script processing, don't do so
* if we are here basic sanity checks are already done
* (like presence of at least one via), so you can count
* on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_script_cb(msg, ONREPLY_CB_TYPE)==0 )
{
STATS_RPL_FWD_DROP();
goto end; /* drop the reply */
}
/* exec the onreply routing script */
keng = sr_kemi_eng_get();
if (onreply_rt.rlist[DEFAULT_RT]!=NULL || keng!=NULL){
set_route_type(CORE_ONREPLY_ROUTE);
ret = 1;
if(unlikely(keng!=NULL)) {
bctx = sr_kemi_act_ctx_get();
init_run_actions_ctx(&ctx);
sr_kemi_act_ctx_set(&ctx);
ret = keng->froute(msg, CORE_ONREPLY_ROUTE, NULL, NULL);
sr_kemi_act_ctx_set(bctx);
} else {
ret=run_top_route(onreply_rt.rlist[DEFAULT_RT], msg, &ctx);
}
#ifndef NO_ONREPLY_ROUTE_ERROR
if (unlikely(ret<0)){
LM_WARN("error while trying onreply script\n");
goto error_rpl;
}else
#endif /* NO_ONREPLY_ROUTE_ERROR */
if (unlikely(ret==0 || (ctx.run_flags&DROP_R_F))){
STATS_RPL_FWD_DROP();
goto skip_send_reply; /* drop the message, no error */
}
}
/* send the msg */
forward_reply(msg);
skip_send_reply:
if(is_printable(cfg_get(core, core_cfg, latency_cfg_log))
|| stats_on==1) {
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
LOG(cfg_get(core, core_cfg, latency_cfg_log),
"reply-route executed in: %d usec\n", diff);
#ifdef STATS
stats->processed_responses++;
stats->acc_res_time+=diff;
#endif
}
/* execute post reply-script callbacks */
exec_post_script_cb(msg, ONREPLY_CB_TYPE);
}
end:
#ifdef STATS
skipped = 0;
#endif
/* free possible loaded avps -bogdan */
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
LM_DBG("cleaning up\n");
free_sip_msg(msg);
pkg_free(msg);
#ifdef STATS
if (skipped) STATS_RX_DROPS;
#endif
/* reset log prefix */
log_prefix_set(NULL);
return 0;
#ifndef NO_ONREPLY_ROUTE_ERROR
error_rpl:
/* execute post reply-script callbacks */
exec_post_script_cb(msg, ONREPLY_CB_TYPE);
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
goto error02;
#endif /* NO_ONREPLY_ROUTE_ERROR */
error_req:
LM_DBG("error:...\n");
/* execute post request-script callbacks */
exec_post_script_cb(msg, REQUEST_CB_TYPE);
error03:
/* free possible loaded avps -bogdan */
reset_avps();
#ifdef WITH_XAVP
xavp_reset_list();
#endif
error02:
free_sip_msg(msg);
pkg_free(msg);
error00:
STATS_RX_DROPS;
/* reset log prefix */
log_prefix_set(NULL);
return -1;
}
/* WARNING: buf must be 0 terminated (buf[len]=0) or some things might
* break (e.g.: modules/textops)
*/
int receive_msg(char* buf, unsigned int len, struct receive_info* rcv_info)
{
struct sip_msg* msg;
int ret;
#ifdef STATS
int skipped = 1;
struct timeval tvb, tve;
struct timezone tz;
unsigned int diff;
#endif
msg=pkg_malloc(sizeof(struct sip_msg));
if (msg==0) {
LOG(L_ERR, "ERROR: receive_msg: no mem for sip_msg\n");
goto error00;
}
msg_no++;
/* number of vias parsed -- good for diagnostic info in replies */
via_cnt=0;
memset(msg,0, sizeof(struct sip_msg)); /* init everything to 0 */
/* fill in msg */
msg->buf=buf;
msg->len=len;
/* zero termination (termination of orig message bellow not that
useful as most of the work is done with scratch-pad; -jiri */
/* buf[len]=0; */ /* WARNING: zero term removed! */
msg->rcv=*rcv_info;
msg->id=msg_no;
msg->set_global_address=default_global_address;
msg->set_global_port=default_global_port;
if (parse_msg(buf,len, msg)!=0){
LOG(L_ERR, "ERROR: receive_msg: parse_msg failed\n");
goto error02;
}
DBG("After parse_msg...\n");
/* ... clear branches from previous message */
clear_branches();
reset_static_buffer();
if (msg->first_line.type==SIP_REQUEST){
if (!IS_SIP(msg)){
if (nonsip_msg_run_hooks(msg)!=NONSIP_MSG_ACCEPT);
goto end; /* drop the message */
}
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in request\n");
goto error02;
}
/* check if necessary to add receive?->moved to forward_req */
/* check for the alias stuff */
#ifdef USE_TCP
if (msg->via1->alias && tcp_accept_aliases &&
(((rcv_info->proto==PROTO_TCP) && !tcp_disable)
#ifdef USE_TLS
|| ((rcv_info->proto==PROTO_TLS) && !tls_disable)
#endif
)
){
if (tcpconn_add_alias(rcv_info->proto_reserved1, msg->via1->port,
rcv_info->proto)!=0){
LOG(L_ERR, " ERROR: receive_msg: tcp alias failed\n");
/* continue */
}
}
#endif
/* skip: */
DBG("preparing to run routing scripts...\n");
#ifdef STATS
gettimeofday( & tvb, &tz );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_req_cb(msg)==0 )
goto end; /* drop the request */
/* exec the routing script */
if (run_actions(main_rt.rlist[DEFAULT_RT], msg)<0){
LOG(L_WARN, "WARNING: receive_msg: "
"error while trying script\n");
goto error_req;
}
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_requests++;
stats->acc_req_time += diff;
DBG("successfully ran routing scripts...(%d usec)\n", diff);
STATS_RX_REQUEST( msg->first_line.u.request.method_value );
#endif
/* execute post request-script callbacks */
exec_post_req_cb(msg);
}else if (msg->first_line.type==SIP_REPLY){
/* sanity checks */
if ((msg->via1==0) || (msg->via1->error!=PARSE_OK)){
/* no via, send back error ? */
LOG(L_ERR, "ERROR: receive_msg: no via found in reply\n");
goto error02;
}
#ifdef STATS
gettimeofday( & tvb, &tz );
STATS_RX_RESPONSE ( msg->first_line.u.reply.statuscode / 100 );
#endif
/* execute pre-script callbacks, if any; -jiri */
/* if some of the callbacks said not to continue with
script processing, don't do so
if we are here basic sanity checks are already done
(like presence of at least one via), so you can count
on via1 being parsed in a pre-script callback --andrei
*/
if (exec_pre_rpl_cb(msg)==0 )
goto end; /* drop the request */
/* exec the onreply routing script */
if (onreply_rt.rlist[DEFAULT_RT]){
ret=run_actions(onreply_rt.rlist[DEFAULT_RT], msg);
if (ret<0){
LOG(L_WARN, "WARNING: receive_msg: "
"error while trying onreply script\n");
goto error_rpl;
}else if (ret==0) goto skip_send_reply; /* drop the message,
no error */
}
/* send the msg */
forward_reply(msg);
skip_send_reply:
#ifdef STATS
gettimeofday( & tve, &tz );
diff = (tve.tv_sec-tvb.tv_sec)*1000000+(tve.tv_usec-tvb.tv_usec);
stats->processed_responses++;
stats->acc_res_time+=diff;
DBG("successfully ran reply processing...(%d usec)\n", diff);
#endif
/* execute post reply-script callbacks */
exec_post_rpl_cb(msg);
}
end:
#ifdef STATS
skipped = 0;
#endif
/* free possible loaded avps -bogdan */
reset_avps();
DBG("receive_msg: cleaning up\n");
free_sip_msg(msg);
pkg_free(msg);
#ifdef STATS
if (skipped) STATS_RX_DROPS;
#endif
return 0;
error_rpl:
/* execute post reply-script callbacks */
exec_post_rpl_cb(msg);
reset_avps();
goto error02;
error_req:
DBG("receive_msg: error:...\n");
/* execute post request-script callbacks */
exec_post_req_cb(msg);
/* free possible loaded avps -bogdan */
reset_avps();
error02:
free_sip_msg(msg);
pkg_free(msg);
error00:
STATS_RX_DROPS;
return -1;
}
