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action.c
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action.c
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/*
* $Id$
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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)
* 2010-06-01 special hack/support for fparam fixups so that they can handle
* variable RVEs (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_core.h"
#endif
#include "switch.h"
#include "events.h"
#include "cfg/cfg_struct.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 */
/* current action executed from config file */
static cfg_action_t *_cfg_crt_action = 0;
/*!< maximum number of recursive calls for blocks of actions */
static unsigned int max_recursive_level = 256;
void set_max_recursive_level(unsigned int lev)
{
max_recursive_level = lev;
}
/* return current action executed from config file */
cfg_action_t *get_cfg_crt_action(void)
{
return _cfg_crt_action;
}
/* return line in config for current executed action */
int get_cfg_crt_line(void)
{
if(_cfg_crt_action==0)
return 0;
return _cfg_crt_action->cline;
}
/* return name of config for current executed action */
char *get_cfg_crt_name(void)
{
if(_cfg_crt_action==0)
return 0;
return _cfg_crt_action->cfile;
}
/* handle the exit code of a module function call.
* (used internally in do_action())
* @param h - script handle (h->last_retcode and h->run_flags will be set).
* @param ret - module function (v0 or v2) retcode
* Side-effects: sets _last_returned_code
*/
#define MODF_HANDLE_RETCODE(h, ret) \
do { \
/* if (unlikely((ret)==0)) (h)->run_flags|=EXIT_R_F; */ \
(h)->run_flags |= EXIT_R_F & (((ret) != 0) -1); \
(h)->last_retcode=(ret); \
_last_returned_code = (h)->last_retcode; \
} while(0)
/* frees parameters converted using MODF_RVE_PARAM_CONVERT() from dst.
* (used internally in do_action())
* Assumes src is unchanged.
* Side-effects: clobbers i (int).
*/
#define MODF_RVE_PARAM_FREE(cmd, src, dst) \
for (i=0; i < (dst)[1].u.number; i++) { \
if ((src)[i+2].type == RVE_ST && (dst)[i+2].u.data) { \
if ((dst)[i+2].type == RVE_FREE_FIXUP_ST) {\
/* call free_fixup (which should restore the original
string) */ \
(void)call_fixup((cmd)->free_fixup, &(dst)[i+2].u.data, i+1); \
} else if ((dst)[i+2].type == FPARAM_DYN_ST) {\
/* completely frees fparam and restore original string */\
fparam_free_restore(&(dst)[i+2].u.data); \
} \
/* free allocated string */ \
pkg_free((dst)[i+2].u.data); \
(dst)[i+2].u.data = 0; \
} \
}
/* fills dst from src, converting RVE_ST params to STRING_ST.
* (used internally in do_action())
* @param src - source action_u_t array, as in the action structure
* @param dst - destination action_u_t array, will be filled from src.
* WARNING: dst must be cleaned when done, use MODULE_RVE_PARAM_FREE()
* Side-effects: clobbers i (int), s (str), rv (rvalue*), might jump to error.
*/
#define MODF_RVE_PARAM_CONVERT(h, msg, cmd, src, dst) \
do { \
(dst)[1]=(src)[1]; \
for (i=0; i < (src)[1].u.number; i++) { \
if ((src)[2+i].type == RVE_ST) { \
rv=rval_expr_eval((h), (msg), (src)[i+2].u.data); \
if (unlikely(rv == 0 || \
rval_get_str((h), (msg), &s, rv, 0) < 0)) { \
rval_destroy(rv); \
ERR("failed to convert RVE to string\n"); \
(dst)[1].u.number = i; \
MODF_RVE_PARAM_FREE(cmd, src, dst); \
goto error; \
} \
(dst)[i+2].type = STRING_RVE_ST; \
(dst)[i+2].u.string = s.s; \
(dst)[i+2].u.str.len = s.len; \
rval_destroy(rv); \
if ((cmd)->fixup) {\
if ((cmd)->free_fixup) {\
if (likely( call_fixup((cmd)->fixup, \
&(dst)[i+2].u.data, i+1) >= 0) ) { \
/* success => mark it for calling free fixup */ \
if (likely((dst)[i+2].u.data != s.s)) \
(dst)[i+2].type = RVE_FREE_FIXUP_ST; \
} else { \
/* error calling fixup => mark conv. parameter \
and return error */ \
(dst)[1].u.number = i; \
ERR("runtime fixup failed for %s param %d\n", \
(cmd)->name, i+1); \
MODF_RVE_PARAM_FREE(cmd, src, dst); \
goto error; \
} \
} else if ((cmd)->fixup_flags & FIXUP_F_FPARAM_RVE) { \
if (likely( call_fixup((cmd)->fixup, \
&(dst)[i+2].u.data, i+1) >= 0)) { \
if ((dst)[i+2].u.data != s.s) \
(dst)[i+2].type = FPARAM_DYN_ST; \
} else { \
/* error calling fixup => mark conv. parameter \
and return error */ \
(dst)[1].u.number = i; \
ERR("runtime fixup failed for %s param %d\n", \
(cmd)->name, i+1); \
MODF_RVE_PARAM_FREE(cmd, src, dst); \
goto error; \
}\
} \
} \
} else \
(dst)[i+2]=(src)[i+2]; \
} \
} while(0)
/* call a module function with normal STRING_ST params.
* (used internally in do_action())
* @param f_type - cmd_function type
* @param h
* @param msg
* @param src - source action_u_t array (e.g. action->val)
* @param params... - variable list of parameters, passed to the module
* function
* Side-effects: sets ret, clobbers i (int), s (str), rv (rvalue*), cmd,
* might jump to error.
*
*/
#ifdef __SUNPRO_C
#define MODF_CALL(f_type, h, msg, src, ...) \
do { \
cmd=(src)[0].u.data; \
ret=((f_type)cmd->function)((msg), __VAR_ARGS__); \
MODF_HANDLE_RETCODE(h, ret); \
} while (0)
#else /* ! __SUNPRO_C (gcc, icc a.s.o) */
#define MODF_CALL(f_type, h, msg, src, params...) \
do { \
cmd=(src)[0].u.data; \
ret=((f_type)cmd->function)((msg), ## params ); \
MODF_HANDLE_RETCODE(h, ret); \
} while (0)
#endif /* __SUNPRO_C */
/* call a module function with possible RVE params.
* (used internally in do_action())
* @param f_type - cmd_function type
* @param h
* @param msg
* @param src - source action_u_t array (e.g. action->val)
* @param dst - temporary action_u_t array used for conversions. It can be
* used for the function parameters. It's contents it's not
* valid after the call.
* @param params... - variable list of parameters, passed to the module
* function
* Side-effects: sets ret, clobbers i (int), s (str), rv (rvalue*), f, dst,
* might jump to error.
*
*/
#ifdef __SUNPRO_C
#define MODF_RVE_CALL(f_type, h, msg, src, dst, ...) \
do { \
cmd=(src)[0].u.data; \
MODF_RVE_PARAM_CONVERT(h, msg, cmd, src, dst); \
ret=((f_type)cmd->function)((msg), __VAR_ARGS__); \
MODF_HANDLE_RETCODE(h, ret); \
/* free strings allocated by us or fixups */ \
MODF_RVE_PARAM_FREE(cmd, src, dst); \
} while (0)
#else /* ! __SUNPRO_C (gcc, icc a.s.o) */
#define MODF_RVE_CALL(f_type, h, msg, src, dst, params...) \
do { \
cmd=(src)[0].u.data; \
MODF_RVE_PARAM_CONVERT(h, msg, cmd, src, dst); \
ret=((f_type)cmd->function)((msg), ## params ); \
MODF_HANDLE_RETCODE(h, ret); \
/* free strings allocated by us or fixups */ \
MODF_RVE_PARAM_FREE(cmd, src, dst); \
} while (0)
#endif /* __SUNPRO_C */
/* 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;
sr31_cmd_export_t* cmd;
int len;
int user;
struct sip_uri uri, next_hop;
struct sip_uri *u;
unsigned short port;
str* dst_host;
int i, flags;
avp_t* avp;
struct search_state st;
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;
void *srevp[2];
/* temporary storage space for a struct action.val[] working copy
(needed to transform RVE intro STRING before calling module
functions). [0] is not used (corresp. to the module export pointer),
[1] contains the number of params, and [2..] the param values.
We need [1], because some fixup function use it
(see fixup_get_param_count()). */
static action_u_t mod_f_params[MAX_ACTIONS];
/* 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;
/* hook for every executed action (in use by cfg debugger) */
if(unlikely(sr_event_enabled(SREV_CFG_RUN_ACTION)))
{
srevp[0] = (void*)a;
srevp[1] = (void*)msg;
sr_event_exec(SREV_CFG_RUN_ACTION, (void*)srevp);
}
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:
case PROTO_WS:
#endif
#ifdef USE_TLS
case PROTO_TLS:
case PROTO_WSS:
#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;
} else if (u->proto!=PROTO_WSS)
dst.proto=PROTO_TLS;
else
dst.proto=PROTO_WSS;
}
#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 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 (unlikely(a->val[0].type!=STR_ST)) {
LOG(L_CRIT, "BUG: do_action: bad append_branch_t %d\n",
a->val[0].type );
ret=E_BUG;
goto error;
}
getbflagsval(0, (flag_t*)&flags);
ret=append_branch(msg, &a->val[0].u.str, &msg->dst_uri,
&msg->path_vec, a->val[1].u.number,
(flag_t)flags, msg->force_send_socket,
0, 0, 0, 0);
/* if the uri is the ruri and q was also not changed, mark
ruri as consumed, to avoid having an identical branch */
if ((a->val[0].u.str.s == 0 || a->val[0].u.str.len == 0) &&
a->val[1].u.number == Q_UNSPECIFIED)
ruri_mark_consumed();
break;
/* remove last branch */
case REMOVE_BRANCH_T:
if (a->val[0].type!=NUMBER_ST) {
ret=drop_sip_branch(0) ? -1 : 1;
} else {
ret=drop_sip_branch(a->val[0].u.number) ? -1 : 1;
}
break;
/* remove all branches */
case CLEAR_BRANCHES_T:
clear_branches();
ret=1;
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:
ret = 0;
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 (likely(a->val[0].type == NUMBER_ST))
i = a->val[0].u.number;
else if (a->val[0].type == RVE_ST) {
rv = rval_expr_eval(h, msg, a->val[0].u.data);
rval_cache_init(&c1);
if (unlikely(rv == 0 ||
rval_get_tmp_str(h, msg, &s, rv, 0, &c1) < 0)) {
rval_destroy(rv);
rval_cache_clean(&c1);
ERR("failed to convert RVE to string\n");
ret = E_UNSPEC;
goto error;
}
i = route_lookup(&main_rt, s.s);
if (unlikely(i < 0)) {
ERR("route \"%s\" not found at %s:%d\n",
s.s, (a->cfile)?a->cfile:"line", a->cline);
rval_destroy(rv);
rval_cache_clean(&c1);
s.s = 0;
ret = E_SCRIPT;
goto error;
}
rval_destroy(rv);
rval_cache_clean(&c1);
s.s = 0;
} else {
LOG(L_CRIT, "BUG: do_action: bad route() type %d\n",
a->val[0].type);
ret=E_BUG;
goto error;
}
if (unlikely((i>=main_rt.idx)||(i<0))){
LOG(L_ERR, "ERROR: invalid routing table number in"
"route(%lu) at %s:%d\n", a->val[0].u.number,
(a->cfile)?a->cfile:"line", a->cline);
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[i], 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*/
ruri_mark_new(); /* available for forking */
};
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;
ruri_mark_new(); /* available for forking */
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)