/
action.c
2266 lines (2084 loc) · 58.1 KB
/
action.c
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/*
* Copyright (C) 2010-2014 OpenSIPS Solutions
* Copyright (C) 2005-2006 Voice Sistem S.R.L.
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of opensips, a free SIP server.
*
* opensips 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
*
* opensips 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)
* 2005-11-29 added serialize_branches and next_branches (bogdan)
* 2006-03-02 MODULE_T action points to a cmd_export_t struct instead to
* a function address - more info is accessible (bogdan)
* 2006-05-22 forward(_udp,_tcp,_tls) and send(_tcp) merged in forward() and
* send() (bogdan)
* 2006-12-22 functions for script and branch flags added (bogdan)
*/
/*!
* \file
* \brief OpenSIPS Generic functions
*/
#include "action.h"
#include "config.h"
#include "error.h"
#include "dprint.h"
#include "proxy.h"
#include "forward.h"
#include "route.h"
#include "parser/msg_parser.h"
#include "parser/parse_uri.h"
#include "ut.h"
#include "sr_module.h"
#include "mem/mem.h"
#include "globals.h"
#include "dset.h"
#include "flags.h"
#include "errinfo.h"
#include "serialize.h"
#include "blacklists.h"
#include "cachedb/cachedb.h"
#include "msg_translator.h"
#include "mod_fix.h"
/* needed by tcpconn_add_alias() */
#include "net/tcp_conn_defs.h"
#include "script_var.h"
#include "xlog.h"
#include "evi/evi_modules.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 action_flags = 0;
int return_code = 0;
int max_while_loops = 100;
/* script tracing options */
int use_script_trace = 0;
int script_trace_log_level = L_ALERT;
char *script_trace_info = NULL;
pv_elem_t script_trace_elem;
static int rec_lev=0;
extern err_info_t _oser_err_info;
action_time longest_action[LONGEST_ACTION_SIZE];
int min_action_time=0;
action_elem_p route_params[MAX_REC_LEV];
int route_params_number[MAX_REC_LEV];
int route_rec_level = -1;
int curr_action_line;
char *curr_action_file;
static int for_each_handler(struct sip_msg *msg, struct action *a);
/* run actions from a route */
/* returns: 0, or 1 on success, <0 on error */
/* (0 if drop or break encountered, 1 if not ) */
static inline int run_actions(struct action* a, struct sip_msg* msg)
{
int ret;
rec_lev++;
if (rec_lev>ROUTE_MAX_REC_LEV){
LM_ERR("too many recursive routing table lookups (%d) giving up!\n",
rec_lev);
ret=E_UNSPEC;
goto error;
}
if (a==0){
LM_WARN("null action list (rec_level=%d)\n",
rec_lev);
ret=1;
goto error;
}
ret=run_action_list(a, msg);
/* if 'return', reset the flag */
if(action_flags&ACT_FL_RETURN)
action_flags &= ~ACT_FL_RETURN;
rec_lev--;
return ret;
error:
rec_lev--;
return ret;
}
/* run the error route with correct handling - simpler wrapper to
allow the usage from other parts of the code */
void run_error_route(struct sip_msg* msg, int force_reset)
{
int old_route;
LM_DBG("triggering\n");
swap_route_type(old_route, ERROR_ROUTE);
run_actions(error_rlist.a, msg);
/* reset error info */
init_err_info();
set_route_type(old_route);
}
/* run a list of actions */
int run_action_list(struct action* a, struct sip_msg* msg)
{
int ret=E_UNSPEC;
struct action* t;
for (t=a; t!=0; t=t->next){
ret=do_action(t, msg);
/* if action returns 0, then stop processing the script */
if(ret==0)
action_flags |= ACT_FL_EXIT;
/* check for errors */
if (_oser_err_info.eclass!=0 && error_rlist.a!=NULL &&
(route_type&(ERROR_ROUTE|ONREPLY_ROUTE|LOCAL_ROUTE))==0 )
run_error_route(msg,0);
/* continue or not ? */
if( action_flags&(ACT_FL_RETURN|ACT_FL_EXIT) )
break;
}
return ret;
}
int run_top_route(struct action* a, struct sip_msg* msg)
{
int bk_action_flags;
int bk_rec_lev;
int ret;
context_p ctx = NULL;
bk_action_flags = action_flags;
bk_rec_lev = rec_lev;
action_flags = 0;
rec_lev = 0;
init_err_info();
if (current_processing_ctx==NULL) {
if ( (ctx=context_alloc(CONTEXT_GLOBAL))==NULL) {
LM_ERR("failed to allocated new global context\n");
return -1;
}
memset( ctx, 0, context_size(CONTEXT_GLOBAL));
current_processing_ctx = ctx;
}
run_actions(a, msg);
ret = action_flags;
action_flags = bk_action_flags;
rec_lev = bk_rec_lev;
/* reset script tracing */
use_script_trace = 0;
if (ctx && current_processing_ctx) {
context_destroy(CONTEXT_GLOBAL, ctx);
context_free(ctx);
current_processing_ctx = NULL;
}
return ret;
}
/* execute assignment operation */
int do_assign(struct sip_msg* msg, struct action* a)
{
int ret;
pv_value_t val;
pv_spec_p dspec;
ret = -1;
dspec = (pv_spec_p)a->elem[0].u.data;
if(!pv_is_w(dspec))
{
LM_ERR("read only PV in left expression\n");
goto error;
}
memset(&val, 0, sizeof(pv_value_t));
if(a->elem[1].type != NULLV_ST)
{
ret = eval_expr((struct expr*)a->elem[1].u.data, msg, &val);
if(ret < 0 || !(val.flags & (PV_VAL_STR | PV_VAL_INT | PV_VAL_NULL)))
{
LM_WARN("no value in right expression at %s:%d\n",
a->file, a->line);
goto error2;
}
}
switch ((unsigned char)a->type){
case EQ_T:
case COLONEQ_T:
case PLUSEQ_T:
case MINUSEQ_T:
case DIVEQ_T:
case MULTEQ_T:
case MODULOEQ_T:
case BANDEQ_T:
case BOREQ_T:
case BXOREQ_T:
script_trace("assign",
(unsigned char)a->type == EQ_T ? "equal" :
(unsigned char)a->type == COLONEQ_T ? "colon-eq" :
(unsigned char)a->type == PLUSEQ_T ? "plus-eq" :
(unsigned char)a->type == MINUSEQ_T ? "minus-eq" :
(unsigned char)a->type == DIVEQ_T ? "div-eq" :
(unsigned char)a->type == MULTEQ_T ? "mult-eq" :
(unsigned char)a->type == MODULOEQ_T? "modulo-eq" :
(unsigned char)a->type == BANDEQ_T ? "b-and-eq" :
(unsigned char)a->type == BOREQ_T ? "b-or-eq":"b-xor-eq",
msg, a->file, a->line);
if(a->elem[1].type == NULLV_ST || (val.flags & PV_VAL_NULL))
{
if(pv_set_value(msg, dspec, (int)a->type, 0)<0)
{
LM_ERR("setting PV failed\n");
goto error;
}
} else {
if(pv_set_value(msg, dspec, (int)a->type, &val)<0)
{
LM_ERR("setting PV failed\n");
goto error;
}
}
ret = 1;
break;
default:
LM_ALERT("BUG -> unknown op type %d\n", a->type);
goto error;
}
pv_value_destroy(&val);
return ret;
error:
LM_ERR("error at %s:%d\n", a->file, a->line);
error2:
pv_value_destroy(&val);
return -1;
}
static int do_action_set_adv_address(struct sip_msg *msg, struct action *a)
{
str adv_addr;
int ret = 1; /* continue processing */
if (a->elem[0].type != STR_ST) {
LM_BUG("set_advertised_address type %d", a->elem[0].type);
ret = E_BUG;
goto out;
}
if (pv_printf_s(msg, (pv_elem_t *)a->elem[0].u.data, &adv_addr) != 0
|| adv_addr.len <= 0) {
LM_WARN("cannot get string for value (%s:%d)\n",a->file,a->line);
ret = E_BUG;
goto out;
}
LM_DBG("setting adv address = [%.*s]\n", adv_addr.len, adv_addr.s);
/* duplicate the advertised address into private memory */
if (adv_addr.len > msg->set_global_address.len) {
msg->set_global_address.s = pkg_realloc(msg->set_global_address.s,
adv_addr.len);
if (!msg->set_global_address.s) {
LM_ERR("out of pkg mem\n");
ret = E_OUT_OF_MEM;
goto out;
}
}
memcpy(msg->set_global_address.s, adv_addr.s, adv_addr.len);
msg->set_global_address.len = adv_addr.len;
out:
return ret;
}
static int do_action_set_adv_port(struct sip_msg *msg, struct action *a)
{
str adv_port;
int ret = 1;
if (a->elem[0].type != STR_ST) {
LM_BUG("set_advertised_port type %d", a->elem[0].type);
ret = E_BUG;
goto out;
}
if (pv_printf_s(msg, (pv_elem_t *)a->elem[0].u.data, &adv_port) != 0
|| adv_port.len <= 0) {
LM_WARN("cannot get string for value (%s:%d)\n", a->file,a->line);
ret = E_BUG;
goto out;
}
LM_DBG("setting adv port '%.*s'\n", adv_port.len, adv_port.s);
/* duplicate the advertised port into private memory */
if (adv_port.len > msg->set_global_port.len) {
msg->set_global_port.s = pkg_realloc(msg->set_global_port.s,
adv_port.len);
if (!msg->set_global_port.s) {
LM_ERR("out of pkg mem\n");
ret = E_OUT_OF_MEM;
goto out;
}
}
memcpy(msg->set_global_port.s, adv_port.s, adv_port.len);
msg->set_global_port.len = adv_port.len;
out:
return ret;
}
#define should_skip_updating(action_type) \
(action_type == IF_T || action_type == ROUTE_T || \
action_type == WHILE_T || action_type == FOR_EACH_T)
#define update_longest_action(a) do { \
if (execmsgthreshold && !should_skip_updating((unsigned char)(a)->type)) { \
end_time = get_time_diff(&start); \
if (end_time > min_action_time) { \
for (i=0;i<LONGEST_ACTION_SIZE;i++) { \
if (longest_action[i].a_time < end_time) { \
memmove(longest_action+i+1,longest_action+i, \
(LONGEST_ACTION_SIZE-i-1)*sizeof(action_time)); \
longest_action[i].a_time=end_time; \
longest_action[i].a = a; \
min_action_time = longest_action[LONGEST_ACTION_SIZE-1].a_time; \
break; \
} \
} \
} \
} \
} while(0)
/* ret= 0! if action -> end of list(e.g DROP),
> 0 to continue processing next actions
and <0 on error */
int do_action(struct action* a, struct sip_msg* msg)
{
int ret;
int v;
int sec,usec;
union sockaddr_union* to;
struct proxy_l* p;
char* tmp;
char *new_uri, *end, *crt;
int len,i;
int user = 0;
int expires = 0;
str vals[5];
str result;
struct sip_uri uri, next_hop;
struct sip_uri *u;
unsigned short port;
int cmatch;
struct action *aitem;
struct action *adefault;
pv_spec_t *spec;
pv_elem_p model;
pv_value_t val;
pv_elem_t *pve;
str name_s;
struct timeval start;
int end_time;
int aux_counter;
cmd_export_t *cmd = NULL;
acmd_export_t *acmd;
void* cmdp[MAX_CMD_PARAMS];
/* 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;
start_expire_timer(start,execmsgthreshold);
curr_action_line = a->line;
curr_action_file = a->file;
ret=E_BUG;
switch ((unsigned char)a->type){
case ASSERT_T:
if (enable_asserts) {
/* if null expr => ignore if? */
if ((a->elem[0].type==EXPR_ST)&&a->elem[0].u.data){
v=eval_expr((struct expr*)a->elem[0].u.data, msg, 0);
ret=1; /*default is continue */
if (v<=0) {
ret=0;
LM_CRIT("ASSERTION FAILED - %s\n", a->elem[1].u.string);
if (abort_on_assert) {
abort();
} else {
set_err_info(OSER_EC_ASSERT, OSER_EL_CRITIC, "assertion failed");
set_err_reply(500, "server error");
run_error_route(msg,0);
}
}
}
}
break;
case DROP_T:
script_trace("core", "drop", msg, a->file, a->line) ;
action_flags |= ACT_FL_DROP|ACT_FL_EXIT;
break;
case EXIT_T:
script_trace("core", "exit", msg, a->file, a->line) ;
ret=0;
action_flags |= ACT_FL_EXIT;
break;
case RETURN_T:
script_trace("core", "return", msg, a->file, a->line) ;
if (a->elem[0].type == SCRIPTVAR_ST)
{
spec = (pv_spec_t*)a->elem[0].u.data;
if(pv_get_spec_value(msg, spec, &val)!=0
|| (val.flags&PV_VAL_NULL))
{
ret=-1;
} else {
if(!(val.flags&PV_VAL_INT))
ret = 1;
else
ret = val.ri;
}
pv_value_destroy(&val);
} else {
ret=a->elem[0].u.number;
}
action_flags |= ACT_FL_RETURN;
break;
case FORWARD_T:
script_trace("core", "forward", msg, a->file, a->line) ;
if (a->elem[0].type==NOSUBTYPE){
/* parse uri and build a proxy */
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) {
LM_ERR("forward: bad_uri dropping packet\n");
break;
}
/* create a temporary proxy*/
p=mk_proxy(u->maddr_val.len?&u->maddr_val:&u->host,
u->port_no, u->proto, (u->type==SIPS_URI_T)?1:0 );
if (p==0){
LM_ERR("bad host name in uri, dropping packet\n");
ret=E_BAD_ADDRESS;
goto error_fwd_uri;
}
ret=forward_request(msg, p);
free_proxy(p); /* frees only p content, not p itself */
pkg_free(p);
if (ret==0) ret=1;
}else if (a->elem[0].type==PROXY_ST) {
if (0==(p=clone_proxy((struct proxy_l*)a->elem[0].u.data))) {
LM_ERR("failed to clone proxy, dropping packet\n");
ret=E_OUT_OF_MEM;
goto error_fwd_uri;
}
ret=forward_request(msg, p);
free_proxy(p); /* frees only p content, not p itself */
pkg_free(p);
if (ret==0) ret=1;
}else{
LM_ALERT("BUG in forward() types %d, %d\n",
a->elem[0].type, a->elem[1].type);
ret=E_BUG;
}
break;
case SEND_T:
script_trace("core", "send", msg, a->file, a->line) ;
if (a->elem[0].type!= PROXY_ST){
LM_ALERT("BUG in send() type %d\n", a->elem[0].type);
ret=E_BUG;
break;
}
if (a->elem[1].u.data) {
if (a->elem[1].type != SCRIPTVAR_ELEM_ST){
LM_ALERT("BUG in send() header type %d\n",a->elem[1].type);
ret=E_BUG;
break;
} else {
pve = (pv_elem_t *)a->elem[1].u.data;
}
} else {
pve = NULL;
}
to=(union sockaddr_union*)
pkg_malloc(sizeof(union sockaddr_union));
if (to==0){
LM_ERR("memory allocation failure\n");
ret=E_OUT_OF_MEM;
break;
}
if (0==(p=clone_proxy((struct proxy_l*)a->elem[0].u.data))) {
LM_ERR("failed to clone proxy, dropping packet\n");
ret=E_OUT_OF_MEM;
break;
}
ret=hostent2su(to, &p->host, p->addr_idx,
(p->port)?p->port:SIP_PORT );
if (ret==0){
if (pve) {
if ( pv_printf_s(msg, pve, &name_s)!=0 ||
name_s.len == 0 || name_s.s == NULL) {
LM_WARN("cannot get string for value (%s:%d)\n",
a->file,a->line);
ret=E_UNSPEC;
break;
}
/* build new msg */
tmp = pkg_malloc(msg->len + name_s.len);
if (!tmp) {
LM_ERR("memory allocation failure\n");
ret = E_OUT_OF_MEM;
break;
}
LM_DBG("searching for first line %d\n",
msg->first_line.len);
/* search first line of previous msg */
/* copy headers */
len = msg->first_line.len;
memcpy(tmp, msg->buf, len);
memcpy(tmp + len, name_s.s, name_s.len);
memcpy(tmp + len + name_s.len,
msg->buf + len, msg->len - len);
ret = msg_send(0/*send_sock*/, p->proto, to, 0/*id*/,
tmp, msg->len + name_s.len, msg);
pkg_free(tmp);
} else {
ret = msg_send(0/*send_sock*/, p->proto, to, 0/*id*/,
msg->buf, msg->len, msg);
}
if (ret!=0 && p->host.h_addr_list[p->addr_idx+1])
p->addr_idx++;
}
free_proxy(p); /* frees only p content, not p itself */
pkg_free(p);
pkg_free(to);
if (ret==0)
ret=1;
break;
case LOG_T:
script_trace("core", "log", msg, a->file, a->line) ;
if ((a->elem[0].type!=NUMBER_ST)|(a->elem[1].type!=STRING_ST)){
LM_ALERT("BUG in log() types %d, %d\n",
a->elem[0].type, a->elem[1].type);
ret=E_BUG;
break;
}
LM_GEN1(a->elem[0].u.number, "%s", a->elem[1].u.string);
ret=1;
break;
case APPEND_BRANCH_T:
script_trace("core", "append_branch", msg, a->file, a->line) ;
if ((a->elem[0].type!=STR_ST)) {
LM_ALERT("BUG in append_branch %d\n",
a->elem[0].type );
ret=E_BUG;
break;
}
if (a->elem[0].u.s.s==NULL) {
ret = append_branch(msg, 0, &msg->dst_uri, &msg->path_vec,
get_ruri_q(msg), getb0flags(msg), msg->force_send_socket);
/* reset all branch info */
msg->force_send_socket = 0;
setb0flags(msg,0);
set_ruri_q(msg,Q_UNSPECIFIED);
if(msg->dst_uri.s!=0)
pkg_free(msg->dst_uri.s);
msg->dst_uri.s = 0;
msg->dst_uri.len = 0;
if(msg->path_vec.s!=0)
pkg_free(msg->path_vec.s);
msg->path_vec.s = 0;
msg->path_vec.len = 0;
} else {
ret = append_branch(msg, &a->elem[0].u.s, &msg->dst_uri,
&msg->path_vec, a->elem[1].u.number, getb0flags(msg),
msg->force_send_socket);
}
break;
case REMOVE_BRANCH_T:
script_trace("core", "remove_branch", msg, a->file, a->line) ;
if (a->elem[0].type == SCRIPTVAR_ST) {
spec = (pv_spec_t*)a->elem[0].u.data;
if( pv_get_spec_value(msg, spec, &val)!=0
|| (val.flags&PV_VAL_NULL) || !(val.flags&PV_VAL_INT) ) {
ret=-1;
break;
}
i = val.ri;
} else {
i=a->elem[0].u.number;
}
ret = (remove_branch((unsigned int)i)==0)?1:-1;
break;
case LEN_GT_T:
script_trace("core", "len_gt", msg, a->file, a->line) ;
if (a->elem[0].type!=NUMBER_ST) {
LM_ALERT("BUG in len_gt type %d\n",
a->elem[0].type );
ret=E_BUG;
break;
}
ret = (msg->len >= (unsigned int)a->elem[0].u.number) ? 1 : -1;
break;
case SETFLAG_T:
script_trace("core", "setflag", msg, a->file, a->line) ;
ret = setflag( msg, a->elem[0].u.number );
break;
case RESETFLAG_T:
script_trace("core", "resetflag", msg, a->file, a->line) ;
ret = resetflag( msg, a->elem[0].u.number );
break;
case ISFLAGSET_T:
script_trace("core", "isflagset", msg, a->file, a->line) ;
ret = isflagset( msg, a->elem[0].u.number );
break;
case SETBFLAG_T:
script_trace("core", "setbflag", msg, a->file, a->line) ;
ret = setbflag( msg, a->elem[0].u.number, a->elem[1].u.number );
break;
case RESETBFLAG_T:
script_trace("core", "resetbflag", msg, a->file, a->line) ;
ret = resetbflag( msg, a->elem[0].u.number, a->elem[1].u.number );
break;
case ISBFLAGSET_T:
script_trace("core", "isbflagset", msg, a->file, a->line) ;
ret = isbflagset( msg, a->elem[0].u.number, a->elem[1].u.number );
break;
case ERROR_T:
script_trace("core", "error", msg, a->file, a->line) ;
if ((a->elem[0].type!=STRING_ST)|(a->elem[1].type!=STRING_ST)){
LM_ALERT("BUG in error() types %d, %d\n",
a->elem[0].type, a->elem[1].type);
ret=E_BUG;
break;
}
LM_ERR("error(\"%s\", \"%s\") not implemented yet\n",
a->elem[0].u.string, a->elem[1].u.string);
ret=1;
break;
case ROUTE_T:
script_trace("route", rlist[a->elem[0].u.number].name, msg, a->file, a->line) ;
if (a->elem[0].type!=NUMBER_ST){
LM_ALERT("BUG in route() type %d\n",
a->elem[0].type);
ret=E_BUG;
break;
}
if ((a->elem[0].u.number>RT_NO)||(a->elem[0].u.number<0)){
LM_ALERT("BUG - invalid routing table number in"
"route(%lu)\n", a->elem[0].u.number);
ret=E_CFG;
break;
}
/* check if the route has parameters */
if (a->elem[1].type != 0) {
if (a->elem[1].type != NUMBER_ST || a->elem[2].type != SCRIPTVAR_ELEM_ST) {
LM_ALERT("BUG in route() type %d/%d\n",
a->elem[1].type, a->elem[2].type);
ret=E_BUG;
break;
}
route_rec_level++;
route_params[route_rec_level] = (action_elem_t *)a->elem[2].u.data;
route_params_number[route_rec_level] = a->elem[1].u.number;
return_code=run_actions(rlist[a->elem[0].u.number].a, msg);
route_rec_level--;
} else {
route_rec_level++;
route_params[route_rec_level] = NULL;
route_params_number[route_rec_level] = 0;
return_code=run_actions(rlist[a->elem[0].u.number].a, msg);
route_rec_level--;
}
ret=return_code;
break;
case REVERT_URI_T:
script_trace("core", "revert_uri", msg, a->file, a->line) ;
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_USER_T:
case SET_USERPASS_T:
case SET_PORT_T:
case SET_URI_T:
case PREFIX_T:
case STRIP_T:
case STRIP_TAIL_T:
script_trace("core",
(unsigned char)a->type == SET_HOST_T ? "set_host" :
(unsigned char)a->type == SET_HOSTPORT_T ? "set_hostport" :
(unsigned char)a->type == SET_USER_T ? "set_user" :
(unsigned char)a->type == SET_USERPASS_T ? "set_userpass" :
(unsigned char)a->type == SET_PORT_T ? "set_port" :
(unsigned char)a->type == SET_URI_T ? "set_uri" :
(unsigned char)a->type == PREFIX_T ? "prefix" :
(unsigned char)a->type == STRIP_T ? "strip" : "strip_tail",
msg, a->file, a->line);
user=0;
if (a->type==STRIP_T || a->type==STRIP_TAIL_T) {
if (a->elem[0].type!=NUMBER_ST) {
LM_ALERT("BUG in set*() type %d\n",
a->elem[0].type);
break;
}
} else if (a->elem[0].type!=STR_ST){
LM_ALERT("BUG in set*() type %d\n",
a->elem[0].type);
ret=E_BUG;
break;
}
if (a->type==SET_URI_T) {
if (set_ruri( msg, &a->elem[0].u.s) ) {
LM_ERR("failed to set new RURI\n");
ret=E_OUT_OF_MEM;
break;
}
ret=1;
break;
}
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){
LM_ERR("bad uri <%.*s>, dropping packet\n", len, tmp);
ret=E_UNSPEC;
break;
}
new_uri=pkg_malloc(MAX_URI_SIZE);
if (new_uri==0){
LM_ERR("memory allocation failure\n");
ret=E_OUT_OF_MEM;
break;
}
end=new_uri+MAX_URI_SIZE;
crt=new_uri;
/* begin copying */
len = (uri.user.len?uri.user.s:uri.host.s) - tmp;
if (crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
if (a->type==PREFIX_T) {
if (crt+a->elem[0].u.s.len>end) goto error_uri;
memcpy( crt, a->elem[0].u.s.s, a->elem[0].u.s.len);
crt+=a->elem[0].u.s.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->elem[0].u.s.s;
len=a->elem[0].u.s.len;
} else if (a->type==STRIP_T) {
if (a->elem[0].u.number>uri.user.len) {
LM_WARN("too long strip asked; "
" deleting username: %lu of <%.*s>\n",
a->elem[0].u.number, uri.user.len, uri.user.s);
len=0;
} else if (a->elem[0].u.number==uri.user.len) {
len=0;
} else {
tmp=uri.user.s + a->elem[0].u.number;
len=uri.user.len - a->elem[0].u.number;
}
} else if (a->type==STRIP_TAIL_T) {
if (a->elem[0].u.number>uri.user.len) {
LM_WARN("too long strip_tail asked;"
" deleting username: %lu of <%.*s>\n",
a->elem[0].u.number, uri.user.len, uri.user.s);
len=0;
} else if (a->elem[0].u.number==uri.user.len) {
len=0;
} else {
tmp=uri.user.s;
len=uri.user.len - a->elem[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;
}
/* host */
if (user || tmp){ /* add @ */
if(crt+1>end) goto error_uri;
*crt='@'; crt++;
}
if ((a->type==SET_HOST_T) ||(a->type==SET_HOSTPORT_T)) {
tmp=a->elem[0].u.s.s;
len=a->elem[0].u.s.len;
} else {
tmp=uri.host.s;
len = uri.host.len;
}
if (tmp){
if(crt+len>end) goto error_uri;
memcpy(crt,tmp,len);crt+=len;
}
/* port */
if (a->type==SET_HOSTPORT_T) tmp=0;
else if (a->type==SET_PORT_T) {
tmp=a->elem[0].u.s.s;
len=a->elem[0].u.s.len;
} else {
tmp=uri.port.s;
len = uri.port.len;
}
if (tmp && len>0){
if(crt+len+1>end) goto error_uri;
*crt=':'; crt++;
memcpy(crt,tmp,len);crt+=len;
}
/* params */
tmp=uri.params.s;
if (tmp){
/* include in param string the starting ';' */
len=uri.params.len+1;
tmp--;
if(crt+len+1>end) goto error_uri;
/* if a maddr param is present, strip it out */
if (uri.maddr.len &&
(a->type==SET_HOSTPORT_T || a->type==SET_HOST_T)) {
memcpy(crt,tmp,uri.maddr.s-tmp-1);
crt+=uri.maddr.s-tmp-1;
memcpy(crt,uri.maddr_val.s+uri.maddr_val.len,
tmp+len-uri.maddr_val.s-uri.maddr_val.len);
crt+=tmp+len-uri.maddr_val.s-uri.maddr_val.len;
} else {
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;
}
*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 SET_DSTURI_T:
script_trace("core", "set_dsturi", msg, a->file, a->line) ;
if (a->elem[0].type!=STR_ST){
LM_ALERT("BUG in setdsturi() type %d\n",
a->elem[0].type);
ret=E_BUG;
break;
}
if(set_dst_uri(msg, &a->elem[0].u.s)!=0)
ret = -1;
else
ret = 1;
break;
case SET_DSTHOST_T:
case SET_DSTPORT_T:
script_trace("core", (unsigned char) a->type == SET_DSTHOST_T ?
"set_dsturi" : "set_dstport", msg, a->file, a->line);
if (a->elem[0].type!=STR_ST){
LM_ALERT("BUG in domain setting type %d\n",
a->elem[0].type);
ret=E_BUG;
break;
}
tmp = msg->dst_uri.s;
len = msg->dst_uri.len;
if (tmp == NULL || len == 0) {
LM_ERR("failure - null uri\n");
ret = E_UNSPEC;
break;
}
if (a->type == SET_DSTHOST_T &&
(a->elem[0].u.s.s == NULL || a->elem[0].u.s.len == 0)) {
LM_ERR("cannot set a null uri domain\n");
break;