/*
* $Id$
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of ser, a free SIP server.
*
* ser is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* For a license to use the ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* ---------
* 2003-02-28 scratchpad compatibility abandoned (jiri)
* 2003-01-29 removed scratchpad (jiri)
* 2003-03-19 fixed set* len calculation bug & simplified a little the code
* (should be a little faster now) (andrei)
* replaced all mallocs/frees w/ pkg_malloc/pkg_free (andrei)
* 2003-04-01 Added support for loose routing in forward (janakj)
* 2003-04-12 FORCE_RPORT_T added (andrei)
* 2003-04-22 strip_tail added (jiri)
* 2003-10-02 added SET_ADV_ADDR_T & SET_ADV_PORT_T (andrei)
* 2003-10-29 added FORCE_TCP_ALIAS_T (andrei)
* 2004-11-30 added FORCE_SEND_SOCKET_T (andrei)
* 2005-12-12 return & drop/exit differentiation (andrei)
* 2005-12-19 select framework (mma)
* 2006-04-12 updated *_send() calls to use a struct dest_info (andrei)
* 2006-07-27 dns cache and dns based send address failover support (andrei)
* 2006-12-06 on popular request last_retcode set also by module functions
* (andrei)
* 2007-06-14 run_actions & do_action need a ctx or handle now, no more
* static vars (andrei)
* 2008-11-18 support for variable parameter module functions (andrei)
* 2008-12-03 use lvalues/rvalues for assignments (andrei)
* 2008-12-17 added UDP_MTU_TRY_PROTO_T (andrei)
* 2009-05-04 switched IF_T to rval_expr (andrei)
* 2009-09-15 added SET_{FWD,RPL}_NO_CONNECT, SET_{FWD,RPL}_CLOSE (andrei)
*/
/*!
* \file
* \brief SIP-router core ::
* \ingroup core
* Module: \ref core
*/
#include "comp_defs.h"
#include "action.h"
#include "config.h"
#include "error.h"
#include "dprint.h"
#include "proxy.h"
#include "forward.h"
#include "udp_server.h"
#include "route.h"
#include "parser/msg_parser.h"
#include "parser/parse_uri.h"
#include "ut.h"
#include "lvalue.h"
#include "sr_module.h"
#include "select_buf.h"
#include "mem/mem.h"
#include "globals.h"
#include "dset.h"
#include "onsend.h"
#include "resolve.h"
#ifdef USE_TCP
#include "tcp_server.h"
#endif
#ifdef USE_SCTP
#include "sctp_server.h"
#endif
#include "switch.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#ifdef DEBUG_DMALLOC
#include <dmalloc.h>
#endif
int _last_returned_code = 0;
struct onsend_info* p_onsend=0; /* onsend route send info */
/* ret= 0! if action -> end of list(e.g DROP),
> 0 to continue processing next actions
and <0 on error */
int do_action(struct run_act_ctx* h, struct action* a, struct sip_msg* msg)
{
int ret;
int v;
struct dest_info dst;
char* tmp;
char *new_uri, *end, *crt;
void* f;
int len;
int user;
struct sip_uri uri, next_hop;
struct sip_uri *u;
unsigned short port;
str* dst_host;
int i, flags;
struct switch_cond_table* sct;
struct switch_jmp_table* sjt;
struct rval_expr* rve;
struct match_cond_table* mct;
struct rvalue* rv;
struct rvalue* rv1;
struct rval_cache c1;
str s;
/* reset the value of error to E_UNSPEC so avoid unknowledgable
functions to return with error (status<0) and not setting it
leaving there previous error; cache the previous value though
for functions which want to process it */
prev_ser_error=ser_error;
ser_error=E_UNSPEC;
ret=E_BUG;
switch ((unsigned char)a->type){
case DROP_T:
switch(a->val[0].type){
case NUMBER_ST:
ret=(int) a->val[0].u.number;
break;
case RVE_ST:
rve=(struct rval_expr*)a->val[0].u.data;
rval_expr_eval_int(h, msg, &ret, rve);
break;
case RETCODE_ST:
ret=h->last_retcode;
break;
default:
BUG("unexpected subtype %d in DROP_T\n",
a->val[0].type);
ret=0;
goto error;
}
h->run_flags|=(unsigned int)a->val[1].u.number;
break;
case FORWARD_T:
#ifdef USE_TCP
case FORWARD_TCP_T:
#endif
#ifdef USE_TLS
case FORWARD_TLS_T:
#endif
#ifdef USE_SCTP
case FORWARD_SCTP_T:
#endif
case FORWARD_UDP_T:
/* init dst */
init_dest_info(&dst);
if (a->type==FORWARD_UDP_T) dst.proto=PROTO_UDP;
#ifdef USE_TCP
else if (a->type==FORWARD_TCP_T) dst.proto= PROTO_TCP;
#endif
#ifdef USE_TLS
else if (a->type==FORWARD_TLS_T) dst.proto= PROTO_TLS;
#endif
#ifdef USE_SCTP
else if (a->type==FORWARD_SCTP_T) dst.proto=PROTO_SCTP;
#endif
else dst.proto=PROTO_NONE;
if (a->val[0].type==URIHOST_ST){
/*parse uri*/
if (msg->dst_uri.len) {
ret = parse_uri(msg->dst_uri.s, msg->dst_uri.len,
&next_hop);
u = &next_hop;
} else {
ret = parse_sip_msg_uri(msg);
u = &msg->parsed_uri;
}
if (ret<0) {
LOG(L_ERR, "ERROR: do_action: forward: bad_uri "
" dropping packet\n");
goto error;
}
switch (a->val[1].type){
case URIPORT_ST:
port=u->port_no;
break;
case NUMBER_ST:
port=a->val[1].u.number;
break;
default:
LOG(L_CRIT, "BUG: do_action bad forward 2nd"
" param type (%d)\n", a->val[1].type);
ret=E_UNSPEC;
goto error_fwd_uri;
}
if (dst.proto == PROTO_NONE){ /* only if proto not set get it
from the uri */
switch(u->proto){
case PROTO_NONE:
/*dst.proto=PROTO_UDP; */
/* no proto, try to get it from the dns */
break;
case PROTO_UDP:
#ifdef USE_TCP
case PROTO_TCP:
#endif
#ifdef USE_TLS
case PROTO_TLS:
#endif
#ifdef USE_SCTP
case PROTO_SCTP:
#endif
dst.proto=u->proto;
break;
default:
LOG(L_ERR,"ERROR: do action: forward: bad uri"
" transport %d\n", u->proto);
ret=E_BAD_PROTO;
goto error_fwd_uri;
}
#ifdef USE_TLS
if (u->type==SIPS_URI_T){
if (u->proto==PROTO_UDP){
LOG(L_ERR, "ERROR: do_action: forward: secure uri"
" incompatible with transport %d\n",
u->proto);
ret=E_BAD_PROTO;
goto error_fwd_uri;
}
dst.proto=PROTO_TLS;
}
#endif
}
#ifdef HONOR_MADDR
if (u->maddr_val.s && u->maddr_val.len)
dst_host=&u->maddr_val;
else
#endif
dst_host=&u->host;
#ifdef USE_COMP
dst.comp=u->comp;
#endif
ret=forward_request(msg, dst_host, port, &dst);
if (ret>=0){
ret=1;
}
}else if ((a->val[0].type==PROXY_ST) && (a->val[1].type==NUMBER_ST)){
if (dst.proto==PROTO_NONE)
dst.proto=msg->rcv.proto;
proxy2su(&dst.to, (struct proxy_l*)a->val[0].u.data);
ret=forward_request(msg, 0, 0, &dst);
if (ret>=0){
ret=1;
proxy_mark((struct proxy_l*)a->val[0].u.data, ret);
}else if (ser_error!=E_OK){
proxy_mark((struct proxy_l*)a->val[0].u.data, ret);
}
}else{
LOG(L_CRIT, "BUG: do_action: bad forward() types %d, %d\n",
a->val[0].type, a->val[1].type);
ret=E_BUG;
goto error;
}
break;
case SEND_T:
case SEND_TCP_T:
if ((a->val[0].type!= PROXY_ST)|(a->val[1].type!=NUMBER_ST)){
LOG(L_CRIT, "BUG: do_action: bad send() types %d, %d\n",
a->val[0].type, a->val[1].type);
ret=E_BUG;
goto error;
}
/* init dst */
init_dest_info(&dst);
ret=proxy2su(&dst.to, (struct proxy_l*)a->val[0].u.data);
if (ret==0){
if (p_onsend){
tmp=p_onsend->buf;
len=p_onsend->len;
}else{
tmp=msg->buf;
len=msg->len;
}
if (a->type==SEND_T){
/*udp*/
dst.proto=PROTO_UDP; /* not really needed for udp_send */
dst.send_sock=get_send_socket(msg, &dst.to, PROTO_UDP);
if (dst.send_sock!=0){
ret=udp_send(&dst, tmp, len);
}else{
ret=-1;
}
}
#ifdef USE_TCP
else{
/*tcp*/
dst.proto=PROTO_TCP;
dst.id=0;
ret=tcp_send(&dst, 0, tmp, len);
}
#endif
}else{
ret=E_BUG;
goto error;
}
proxy_mark((struct proxy_l*)a->val[0].u.data, ret);
if (ret>=0) ret=1;
break;
case LOG_T:
if ((a->val[0].type!=NUMBER_ST)|(a->val[1].type!=STRING_ST)){
LOG(L_CRIT, "BUG: do_action: bad log() types %d, %d\n",
a->val[0].type, a->val[1].type);
ret=E_BUG;
goto error;
}
LOG_(DEFAULT_FACILITY, a->val[0].u.number, "<script>: ", "%s",
a->val[1].u.string);
ret=1;
break;
/* jku -- introduce a new branch */
case APPEND_BRANCH_T:
if ((a->val[0].type!=STRING_ST)) {
LOG(L_CRIT, "BUG: do_action: bad append_branch_t %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
ret=ser_append_branch( msg, a->val[0].u.string,
a->val[0].u.string ? strlen(a->val[0].u.string):0,
0, 0, a->val[1].u.number, 0);
break;
/* jku begin: is_length_greater_than */
case LEN_GT_T:
if (a->val[0].type!=NUMBER_ST) {
LOG(L_CRIT, "BUG: do_action: bad len_gt type %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
/* DBG("XXX: message length %d, max %d\n",
msg->len, a->val[0].u.number ); */
ret = msg->len >= a->val[0].u.number ? 1 : -1;
break;
/* jku end: is_length_greater_than */
/* jku - begin : flag processing */
case SETFLAG_T:
if (a->val[0].type!=NUMBER_ST) {
LOG(L_CRIT, "BUG: do_action: bad setflag() type %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
if (!flag_in_range( a->val[0].u.number )) {
ret=E_CFG;
goto error;
}
setflag( msg, a->val[0].u.number );
ret=1;
break;
case RESETFLAG_T:
if (a->val[0].type!=NUMBER_ST) {
LOG(L_CRIT, "BUG: do_action: bad resetflag() type %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
if (!flag_in_range( a->val[0].u.number )) {
ret=E_CFG;
goto error;
}
resetflag( msg, a->val[0].u.number );
ret=1;
break;
case ISFLAGSET_T:
if (a->val[0].type!=NUMBER_ST) {
LOG(L_CRIT, "BUG: do_action: bad isflagset() type %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
if (!flag_in_range( a->val[0].u.number )) {
ret=E_CFG;
goto error;
}
ret=isflagset( msg, a->val[0].u.number );
break;
/* jku - end : flag processing */
case AVPFLAG_OPER_T: {
struct search_state st;
avp_t* avp;
int flag;
ret = 0;
flag = a->val[1].u.number;
if ((a->val[0].u.attr->type & AVP_INDEX_ALL) == AVP_INDEX_ALL || (a->val[0].u.attr->type & AVP_NAME_RE)!=0) {
for (avp=search_first_avp(a->val[0].u.attr->type, a->val[0].u.attr->name, NULL, &st); avp; avp = search_next_avp(&st, NULL)) {
switch (a->val[2].u.number) { /* oper: 0..reset, 1..set, -1..no change */
case 0:
avp->flags &= ~(avp_flags_t)a->val[1].u.number;
break;
case 1:
avp->flags |= (avp_flags_t)a->val[1].u.number;
break;
default:;
}
ret = ret || ((avp->flags & (avp_flags_t)a->val[1].u.number) != 0);
}
}
else {
avp = search_avp_by_index(a->val[0].u.attr->type, a->val[0].u.attr->name, NULL, a->val[0].u.attr->index);
if (avp) {
switch (a->val[2].u.number) { /* oper: 0..reset, 1..set, -1..no change */
case 0:
avp->flags &= ~(avp_flags_t)a->val[1].u.number;
break;
case 1:
avp->flags |= (avp_flags_t)a->val[1].u.number;
break;
default:;
}
ret = (avp->flags & (avp_flags_t)a->val[1].u.number) != 0;
}
}
if (ret==0)
ret = -1;
break;
}
case ERROR_T:
if ((a->val[0].type!=STRING_ST)|(a->val[1].type!=STRING_ST)){
LOG(L_CRIT, "BUG: do_action: bad error() types %d, %d\n",
a->val[0].type, a->val[1].type);
ret=E_BUG;
goto error;
}
LOG(L_NOTICE, "WARNING: do_action: error(\"%s\", \"%s\") "
"not implemented yet\n", a->val[0].u.string, a->val[1].u.string);
ret=1;
break;
case ROUTE_T:
if (a->val[0].type!=NUMBER_ST){
LOG(L_CRIT, "BUG: do_action: bad route() type %d\n",
a->val[0].type);
ret=E_BUG;
goto error;
}
if ((a->val[0].u.number>=main_rt.idx)||(a->val[0].u.number<0)){
LOG(L_ERR, "ERROR: invalid routing table number in"
"route(%lu)\n", a->val[0].u.number);
ret=E_CFG;
goto error;
}
/*ret=((ret=run_actions(rlist[a->val[0].u.number], msg))<0)?ret:1;*/
ret=run_actions(h, main_rt.rlist[a->val[0].u.number], msg);
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
h->run_flags&=~(RETURN_R_F|BREAK_R_F); /* absorb return & break */
break;
case EXEC_T:
if (a->val[0].type!=STRING_ST){
LOG(L_CRIT, "BUG: do_action: bad exec() type %d\n",
a->val[0].type);
ret=E_BUG;
goto error;
}
LOG(L_NOTICE, "WARNING: exec(\"%s\") not fully implemented,"
" using dumb version...\n", a->val[0].u.string);
ret=system(a->val[0].u.string);
if (ret!=0){
LOG(L_NOTICE, "WARNING: exec() returned %d\n", ret);
}
ret=1;
break;
case REVERT_URI_T:
if (msg->new_uri.s) {
pkg_free(msg->new_uri.s);
msg->new_uri.len=0;
msg->new_uri.s=0;
msg->parsed_uri_ok=0; /* invalidate current parsed uri*/
};
ret=1;
break;
case SET_HOST_T:
case SET_HOSTPORT_T:
case SET_HOSTPORTTRANS_T:
case SET_HOSTALL_T:
case SET_USER_T:
case SET_USERPASS_T:
case SET_PORT_T:
case SET_URI_T:
case PREFIX_T:
case STRIP_T:
case STRIP_TAIL_T:
case SET_USERPHONE_T:
user=0;
if (a->type==STRIP_T || a->type==STRIP_TAIL_T) {
if (a->val[0].type!=NUMBER_ST) {
LOG(L_CRIT, "BUG: do_action: bad set*() type %d\n",
a->val[0].type);
ret=E_BUG;
goto error;
}
} else if (a->type!=SET_USERPHONE_T) {
if (a->val[0].type!=STRING_ST) {
LOG(L_CRIT, "BUG: do_action: bad set*() type %d\n",
a->val[0].type);
ret=E_BUG;
goto error;
}
}
if (a->type==SET_URI_T){
if (msg->new_uri.s) {
pkg_free(msg->new_uri.s);
msg->new_uri.len=0;
}
msg->parsed_uri_ok=0;
len=strlen(a->val[0].u.string);
msg->new_uri.s=pkg_malloc(len+1);
if (msg->new_uri.s==0){
LOG(L_ERR, "ERROR: do_action: memory allocation"
" failure\n");
ret=E_OUT_OF_MEM;
goto error;
}
memcpy(msg->new_uri.s, a->val[0].u.string, len);
msg->new_uri.s[len]=0;
msg->new_uri.len=len;
ret=1;
break;
}
if (msg->parsed_uri_ok==0) {
if (msg->new_uri.s) {
tmp=msg->new_uri.s;
len=msg->new_uri.len;
}else{
tmp=msg->first_line.u.request.uri.s;
len=msg->first_line.u.request.uri.len;
}
if (parse_uri(tmp, len, &uri)<0){
LOG(L_ERR, "ERROR: do_action: bad uri <%s>, dropping"
" packet\n", tmp);
ret=E_UNSPEC;
goto error;
}
} else {
uri=msg->parsed_uri;
}
/* skip SET_USERPHONE_T action if the URI is already
* a tel: or tels: URI, or contains the user=phone param */
if ((a->type==SET_USERPHONE_T)
&& ((uri.type==TEL_URI_T) || (uri.type==TELS_URI_T)
|| ((uri.user_param_val.len==5) && (memcmp(uri.user_param_val.s, "phone", 5)==0)))
) {
ret=1;
break;
}
/* SET_PORT_T does not work with tel: URIs */
if ((a->type==SET_PORT_T)
&& ((uri.type==TEL_URI_T) || (uri.type==TELS_URI_T))
&& ((uri.flags & URI_SIP_USER_PHONE)==0)
) {
LOG(L_ERR, "ERROR: do_action: port number of a tel: URI cannot be set\n");
ret=E_UNSPEC;
goto error;
}
new_uri=pkg_malloc(MAX_URI_SIZE);
if (new_uri==0){
LOG(L_ERR, "ERROR: do_action: memory allocation "
" failure\n");
ret=E_OUT_OF_MEM;
goto error;
}
end=new_uri+MAX_URI_SIZE;
crt=new_uri;
/* begin copying */
/* Preserve the URI scheme unless the host part needs
* to be rewritten, and the shceme is tel: or tels: */
switch (uri.type) {
case SIP_URI_T:
len=s_sip.len;
tmp=s_sip.s;
break;
case SIPS_URI_T:
len=s_sips.len;
tmp=s_sips.s;
break;
case TEL_URI_T:
if ((uri.flags & URI_SIP_USER_PHONE)
|| (a->type==SET_HOST_T)
|| (a->type==SET_HOSTPORT_T)
|| (a->type==SET_HOSTPORTTRANS_T)
) {
len=s_sip.len;
tmp=s_sip.s;
break;
}
len=s_tel.len;
tmp=s_tel.s;
break;
case TELS_URI_T:
if ((uri.flags & URI_SIP_USER_PHONE)
|| (a->type==SET_HOST_T)
|| (a->type==SET_HOSTPORT_T)
|| (a->type==SET_HOSTPORTTRANS_T)
) {
len=s_sips.len;
tmp=s_sips.s;
break;
}
len=s_tels.len;
tmp=s_tels.s;
break;
default:
LOG(L_ERR, "ERROR: Unsupported URI scheme (%d), "
"reverted to sip:\n",
uri.type);
len=s_sip.len;
tmp=s_sip.s;
}
if(crt+len+1 /* colon */ >end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
*crt=':'; crt++;
/* user */
/* prefix (-jiri) */
if (a->type==PREFIX_T) {
tmp=a->val[0].u.string;
len=strlen(tmp); if(crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
/* whatever we had before, with prefix we have username
now */
user=1;
}
if ((a->type==SET_USER_T)||(a->type==SET_USERPASS_T)) {
tmp=a->val[0].u.string;
len=strlen(tmp);
} else if (a->type==STRIP_T) {
if (a->val[0].u.number>uri.user.len) {
LOG(L_WARN, "Error: too long strip asked; "
" deleting username: %lu of <%.*s>\n",
a->val[0].u.number, uri.user.len, uri.user.s );
len=0;
} else if (a->val[0].u.number==uri.user.len) {
len=0;
} else {
tmp=uri.user.s + a->val[0].u.number;
len=uri.user.len - a->val[0].u.number;
}
} else if (a->type==STRIP_TAIL_T) {
if (a->val[0].u.number>uri.user.len) {
LOG(L_WARN, "WARNING: too long strip_tail asked; "
" deleting username: %lu of <%.*s>\n",
a->val[0].u.number, uri.user.len, uri.user.s );
len=0;
} else if (a->val[0].u.number==uri.user.len) {
len=0;
} else {
tmp=uri.user.s;
len=uri.user.len - a->val[0].u.number;
}
} else {
tmp=uri.user.s;
len=uri.user.len;
}
if (len){
if(crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
user=1; /* we have an user field so mark it */
}
if (a->type==SET_USERPASS_T) tmp=0;
else tmp=uri.passwd.s;
/* passwd */
if (tmp){
len=uri.passwd.len; if(crt+len+1>end) goto error_uri;
*crt=':'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
/* tel: URI parameters */
if ((uri.type==TEL_URI_T)
|| (uri.type==TELS_URI_T)
) {
tmp=uri.params.s;
if (tmp){
len=uri.params.len; if(crt+len+1>end) goto error_uri;
*crt=';'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
}
/* host */
if ((a->type==SET_HOST_T)
|| (a->type==SET_HOSTPORT_T)
|| (a->type==SET_HOSTALL_T)
|| (a->type==SET_HOSTPORTTRANS_T)
) {
tmp=a->val[0].u.string;
if (tmp) len = strlen(tmp);
else len=0;
} else if ((uri.type==SIP_URI_T)
|| (uri.type==SIPS_URI_T)
|| (uri.flags & URI_SIP_USER_PHONE)
) {
tmp=uri.host.s;
len=uri.host.len;
} else {
tmp=0;
}
if (tmp){
if (user) { /* add @ */
if(crt+1>end) goto error_uri;
*crt='@'; crt++;
}
if(crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
}
if(a->type==SET_HOSTALL_T)
goto done_seturi;
/* port */
if ((a->type==SET_HOSTPORT_T)
|| (a->type==SET_HOSTPORTTRANS_T))
tmp=0;
else if (a->type==SET_PORT_T) {
tmp=a->val[0].u.string;
if (tmp) len = strlen(tmp);
else len = 0;
} else {
tmp=uri.port.s;
len = uri.port.len;
}
if (tmp){
if(crt+len+1>end) goto error_uri;
*crt=':'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
/* params */
if ((a->type==SET_HOSTPORTTRANS_T)
&& uri.sip_params.s
&& uri.transport.s
) {
/* bypass the transport parameter */
if (uri.sip_params.s < uri.transport.s) {
/* there are parameters before transport */
len = uri.transport.s - uri.sip_params.s - 1;
/* ignore the ';' at the end */
if (crt+len+1>end) goto error_uri;
*crt=';'; crt++;
memcpy(crt,uri.sip_params.s,len);crt+=len;
}
len = (uri.sip_params.s + uri.sip_params.len) -
(uri.transport.s + uri.transport.len);
if (len > 0) {
/* there are parameters after transport */
if (crt+len>end) goto error_uri;
tmp = uri.transport.s + uri.transport.len;
memcpy(crt,tmp,len);crt+=len;
}
} else {
tmp=uri.sip_params.s;
if (tmp){
len=uri.sip_params.len; if(crt+len+1>end) goto error_uri;
*crt=';'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
}
/* Add the user=phone param if a tel: or tels:
* URI was converted to sip: or sips:.
* (host part of a tel/tels URI was set.)
* Or in case of sip: URI and SET_USERPHONE_T action */
if (((((uri.type==TEL_URI_T) || (uri.type==TELS_URI_T))
&& ((uri.flags & URI_SIP_USER_PHONE)==0))
&& ((a->type==SET_HOST_T)
|| (a->type==SET_HOSTPORT_T)
|| (a->type==SET_HOSTPORTTRANS_T)))
|| (a->type==SET_USERPHONE_T)
) {
tmp=";user=phone";
len=strlen(tmp);
if(crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
}
/* headers */
tmp=uri.headers.s;
if (tmp){
len=uri.headers.len; if(crt+len+1>end) goto error_uri;
*crt='?'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
done_seturi:
*crt=0; /* null terminate the thing */
/* copy it to the msg */
if (msg->new_uri.s) pkg_free(msg->new_uri.s);
msg->new_uri.s=new_uri;
msg->new_uri.len=crt-new_uri;
msg->parsed_uri_ok=0;
ret=1;
break;
case IF_T:
rve=(struct rval_expr*)a->val[0].u.data;
if (unlikely(rval_expr_eval_int(h, msg, &v, rve) != 0)){
ERR("if expression evaluation failed (%d,%d-%d,%d)\n",
rve->fpos.s_line, rve->fpos.s_col,
rve->fpos.e_line, rve->fpos.e_col);
v=0; /* false */
}
if (unlikely(h->run_flags & EXIT_R_F)){
ret=0;
break;
}
h->run_flags &= ~(RETURN_R_F|BREAK_R_F); /* catch return &
break in expr*/
ret=1; /*default is continue */
if (v>0) {
if ((a->val[1].type==ACTIONS_ST)&&a->val[1].u.data){
ret=run_actions(h,
(struct action*)a->val[1].u.data, msg);
}
}else if ((a->val[2].type==ACTIONS_ST)&&a->val[2].u.data){
ret=run_actions(h,
(struct action*)a->val[2].u.data, msg);
}
break;
case MODULE_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function)f)(msg,
(char*)a->val[2].u.data,
(char*)a->val[3].u.data
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
/* instead of using the parameter number, we use different names
* for calls to functions with 3, 4, 5, 6 or variable number of
* parameters due to performance reasons */
case MODULE3_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function3)f)(msg,
(char*)a->val[2].u.data,
(char*)a->val[3].u.data,
(char*)a->val[4].u.data
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
case MODULE4_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function4)f)(msg,
(char*)a->val[2].u.data,
(char*)a->val[3].u.data,
(char*)a->val[4].u.data,
(char*)a->val[5].u.data
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
case MODULE5_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function5)f)(msg,
(char*)a->val[2].u.data,
(char*)a->val[3].u.data,
(char*)a->val[4].u.data,
(char*)a->val[5].u.data,
(char*)a->val[6].u.data
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
case MODULE6_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function6)f)(msg,
(char*)a->val[2].u.data,
(char*)a->val[3].u.data,
(char*)a->val[4].u.data,
(char*)a->val[5].u.data,
(char*)a->val[6].u.data,
(char*)a->val[7].u.data
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
case MODULEX_T:
if ( a->val[0].type==MODEXP_ST && a->val[0].u.data &&
(f=((union cmd_export_u*)a->val[0].u.data)->c.function)){
ret=((cmd_function_var)f)(msg,
a->val[1].u.number,
&a->val[2]
);
if (ret==0) h->run_flags|=EXIT_R_F;
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
} else {
LOG(L_CRIT,"BUG: do_action: bad module call\n");
goto error;
}
break;
case EVAL_T:
/* only eval the expression to account for possible
side-effect */
rval_expr_eval_int(h, msg, &v,
(struct rval_expr*)a->val[0].u.data);
if (h->run_flags & EXIT_R_F){
ret=0;
break;
}
h->run_flags &= ~RETURN_R_F|BREAK_R_F; /* catch return & break in
expr */
ret=1; /* default is continue */
break;
case SWITCH_COND_T:
sct=(struct switch_cond_table*)a->val[1].u.data;
if (unlikely( rval_expr_eval_int(h, msg, &v,
(struct rval_expr*)a->val[0].u.data) <0)){
/* handle error in expression => use default */
ret=-1;
goto sw_cond_def;
}
if (h->run_flags & EXIT_R_F){
ret=0;
break;
}
h->run_flags &= ~(RETURN_R_F|BREAK_R_F); /* catch return & break
in expr */
ret=1; /* default is continue */
for(i=0; i<sct->n; i++)
if (sct->cond[i]==v){
if (likely(sct->jump[i])){
ret=run_actions(h, sct->jump[i], msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
goto skip;
}
sw_cond_def:
if (sct->def){
ret=run_actions(h, sct->def, msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
break;
case SWITCH_JT_T:
sjt=(struct switch_jmp_table*)a->val[1].u.data;
if (unlikely( rval_expr_eval_int(h, msg, &v,
(struct rval_expr*)a->val[0].u.data) <0)){
/* handle error in expression => use default */
ret=-1;
goto sw_jt_def;
}
if (h->run_flags & EXIT_R_F){
ret=0;
break;
}
h->run_flags &= ~(RETURN_R_F|BREAK_R_F); /* catch return & break
in expr */
ret=1; /* default is continue */
if (likely(v >= sjt->first && v <= sjt->last)){
if (likely(sjt->tbl[v - sjt->first])){
ret=run_actions(h, sjt->tbl[v - sjt->first], msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
break;
}else{
for(i=0; i<sjt->rest.n; i++)
if (sjt->rest.cond[i]==v){
if (likely(sjt->rest.jump[i])){
ret=run_actions(h, sjt->rest.jump[i], msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but
let returns pass */
}
goto skip;
}
}
/* not found => try default */
sw_jt_def:
if (sjt->rest.def){
ret=run_actions(h, sjt->rest.def, msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
break;
case BLOCK_T:
if (likely(a->val[0].u.data)){
ret=run_actions(h, (struct action*)a->val[0].u.data, msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
break;
case MATCH_COND_T:
mct=(struct match_cond_table*)a->val[1].u.data;
rval_cache_init(&c1);
rv=0;
rv1=0;
ret=rval_expr_eval_rvint(h, msg, &rv, &v,
(struct rval_expr*)a->val[0].u.data, &c1);
if (unlikely( ret<0)){
/* handle error in expression => use default */
ret=-1;
goto match_cond_def;
}
if (h->run_flags & EXIT_R_F){
ret=0;
break;
}
h->run_flags &= ~(RETURN_R_F|BREAK_R_F); /* catch return & break
in expr */
if (likely(rv)){
rv1=rval_convert(h, msg, RV_STR, rv, &c1);
if (unlikely(rv1==0)){
ret=-1;
goto match_cond_def;
}
s=rv1->v.s;
}else{
/* int result in v */
rval_cache_clean(&c1);
s.s=sint2str(v, &s.len);
}
ret=1; /* default is continue */
for(i=0; i<mct->n; i++)
if (( mct->match[i].type==MATCH_STR &&
mct->match[i].l.s.len==s.len &&
memcmp(mct->match[i].l.s.s, s.s, s.len) == 0 ) ||
( mct->match[i].type==MATCH_RE &&
regexec(mct->match[i].l.regex, s.s, 0, 0, 0) == 0)
){
if (likely(mct->jump[i])){
ret=run_actions(h, mct->jump[i], msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
goto match_cleanup;
}
match_cond_def:
if (mct->def){
ret=run_actions(h, mct->def, msg);
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
match_cleanup:
if (rv1){
rval_destroy(rv1);
rval_destroy(rv);
rval_cache_clean(&c1);
}else if (rv){
rval_destroy(rv);
rval_cache_clean(&c1);
}
break;
case WHILE_T:
i=0;
flags=0;
rve=(struct rval_expr*)a->val[0].u.data;
ret=1;
while(!(flags & BREAK_R_F) &&
(rval_expr_eval_int(h, msg, &v, rve) == 0) && v){
i++;
if (unlikely(i > cfg_get(core, core_cfg, max_while_loops))){
LOG(L_ERR, "ERROR: runaway while (%d, %d): more then"
" %d loops\n",
rve->fpos.s_line, rve->fpos.s_col,
cfg_get(core, core_cfg, max_while_loops));
ret=-1;
goto error;
}
if (likely(a->val[1].u.data)){
ret=run_actions(h, (struct action*)a->val[1].u.data, msg);
flags|=h->run_flags;
h->run_flags &= ~BREAK_R_F; /* catch breaks, but let
returns passthrough */
}
}
break;
case FORCE_RPORT_T:
msg->msg_flags|=FL_FORCE_RPORT;
ret=1; /* continue processing */
break;
case ADD_LOCAL_RPORT_T:
msg->msg_flags|=FL_ADD_LOCAL_RPORT;
ret=1; /* continue processing */
break;
case UDP_MTU_TRY_PROTO_T:
msg->msg_flags|= (unsigned int)a->val[0].u.number & FL_MTU_FB_MASK;
ret=1; /* continue processing */
break;
case SET_ADV_ADDR_T:
if (a->val[0].type!=STR_ST){
LOG(L_CRIT, "BUG: do_action: bad set_advertised_address() "
"type %d\n", a->val[0].type);
ret=E_BUG;
goto error;
}
msg->set_global_address=*((str*)a->val[0].u.data);
ret=1; /* continue processing */
break;
case SET_ADV_PORT_T:
if (a->val[0].type!=STR_ST){
LOG(L_CRIT, "BUG: do_action: bad set_advertised_port() "
"type %d\n", a->val[0].type);
ret=E_BUG;
goto error;
}
msg->set_global_port=*((str*)a->val[0].u.data);
ret=1; /* continue processing */
break;
#ifdef USE_TCP
case FORCE_TCP_ALIAS_T:
if ( msg->rcv.proto==PROTO_TCP
#ifdef USE_TLS
|| msg->rcv.proto==PROTO_TLS
#endif
){
if (a->val[0].type==NOSUBTYPE) port=msg->via1->port;
else if (a->val[0].type==NUMBER_ST) port=(int)a->val[0].u.number;
else{
LOG(L_CRIT, "BUG: do_action: bad force_tcp_alias"
" port type %d\n", a->val[0].type);
ret=E_BUG;
goto error;
}
if (tcpconn_add_alias(msg->rcv.proto_reserved1, port,
msg->rcv.proto)!=0){
LOG(L_ERR, " ERROR: receive_msg: tcp alias failed\n");
ret=E_UNSPEC;
goto error;
}
}
#endif
ret=1; /* continue processing */
break;
case FORCE_SEND_SOCKET_T:
if (a->val[0].type!=SOCKETINFO_ST){
LOG(L_CRIT, "BUG: do_action: bad force_send_socket argument"
" type: %d\n", a->val[0].type);
ret=E_BUG;
goto error;
}
msg->force_send_socket=(struct socket_info*)a->val[0].u.data;
ret=1; /* continue processing */
break;
case ADD_T:
case ASSIGN_T:
v=lval_assign(h, msg, (struct lvalue*)a->val[0].u.data,
(struct rval_expr*)a->val[1].u.data);
if (likely(v>=0))
ret = 1;
else if (unlikely (v == EXPR_DROP)) /* hack to quit on DROP*/
ret=0;
else
ret=v;
break;
case SET_FWD_NO_CONNECT_T:
msg->fwd_send_flags|= SND_F_FORCE_CON_REUSE;
ret=1; /* continue processing */
break;
case SET_RPL_NO_CONNECT_T:
msg->rpl_send_flags|= SND_F_FORCE_CON_REUSE;
ret=1; /* continue processing */
break;
case SET_FWD_CLOSE_T:
msg->fwd_send_flags|= SND_F_CON_CLOSE;
ret=1; /* continue processing */
break;
case SET_RPL_CLOSE_T:
msg->rpl_send_flags|= SND_F_CON_CLOSE;
ret=1; /* continue processing */
break;
/*
default:
LOG(L_CRIT, "BUG: do_action: unknown type %d\n", a->type);
*/
}
skip:
return ret;
error_uri:
LOG(L_ERR, "ERROR: do_action: set*: uri too long\n");
if (new_uri) pkg_free(new_uri);
LM_ERR("run action error at: %s:%d\n", (a->cfile)?a->cfile:"", a->cline);
return E_UNSPEC;
error_fwd_uri:
/*free_uri(&uri); -- not needed anymore, using msg->parsed_uri*/
error:
LM_ERR("run action error at: %s:%d\n", (a->cfile)?a->cfile:"", a->cline);
return ret;
}
/* returns: 0, or 1 on success, <0 on error */
/* (0 if drop or break encountered, 1 if not ) */
int run_actions(struct run_act_ctx* h, struct action* a, struct sip_msg* msg)
{
struct action* t;
int ret;
struct sr_module *mod;
ret=E_UNSPEC;
h->rec_lev++;
if (h->rec_lev>ROUTE_MAX_REC_LEV){
LOG(L_ERR, "WARNING: too many recursive routing table lookups (%d)"
" giving up!\n", h->rec_lev);
ret=E_UNSPEC;
goto error;
}
if (h->rec_lev==1){
h->run_flags=0;
h->last_retcode=0;
_last_returned_code = h->last_retcode;
#ifdef USE_LONGJMP
if (setjmp(h->jmp_env)){
h->rec_lev=0;
ret=h->last_retcode;
goto end;
}
#endif
}
if (a==0){
DBG("DEBUG: run_actions: null action list (rec_level=%d)\n",
h->rec_lev);
ret=1;
}
for (t=a; t!=0; t=t->next){
ret=do_action(h, t, msg);
/* break, return or drop/exit stop execution of the current
block */
if (h->run_flags & (BREAK_R_F|RETURN_R_F|EXIT_R_F)){
if (h->run_flags & EXIT_R_F){
#ifdef USE_LONGJMP
h->last_retcode=ret;
_last_returned_code = h->last_retcode;
longjmp(h->jmp_env, ret);
#endif
}
break;
}
/* ignore error returns */
}
h->rec_lev--;
end:
/* process module onbreak handlers if present */
if (h->rec_lev==0 && ret==0)
for (mod=modules;mod;mod=mod->next)
if ((mod->mod_interface_ver==0) && mod->exports &&
mod->exports->v0.onbreak_f) {
mod->exports->v0.onbreak_f( msg );
DBG("DEBUG: %s onbreak handler called\n",
mod->exports->c.name);
}
return ret;
error:
h->rec_lev--;
return ret;
}
int run_top_route(struct action* a, sip_msg_t* msg, struct run_act_ctx *c)
{
struct run_act_ctx ctx;
struct run_act_ctx *p;
int ret;
flag_t sfbk;
p = (c)?c:&ctx;
sfbk = getsflags();
setsflagsval(0);
reset_static_buffer();
init_run_actions_ctx(p);
ret = run_actions(p, a, msg);
setsflagsval(sfbk);
return ret;
}