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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 "route.h"
#include "parser/msg_parser.h"
#include "ut.h"
#include "sr_module.h"
#include "mem/mem.h"
#include "errinfo.h"
#include "msg_translator.h"
#include "mod_fix.h"
#include "script_var.h"
#include "xlog.h"
#include "cfg_pp.h"
#include <string.h>
#ifdef DEBUG_DMALLOC
#include <dmalloc.h>
#endif
int action_flags = 0;
int return_code = 0;
int max_while_loops = 10000;
/* 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;
extern err_info_t _oser_err_info;
action_time longest_action[LONGEST_ACTION_SIZE];
int min_action_time=0;
struct route_params_level {
void *params;
void *extra; /* extra params used */
param_getf_t get_param;
};
static struct route_params_level route_params[ROUTE_MAX_REC_LEV];
static int route_rec_level = -1;
/* the current stack of route names (first route name is at index 0) */
char *route_stack[ROUTE_MAX_REC_LEV + 1];
/* the virtual start of the stack; typically 0, but may get temporarily bumped
* with each added nesting level of script route callback execution
* (e.g. due to logic similar to dlg_on_hangup(), followed by a SIP BYE) */
int route_stack_start;
/* the total size of the stack, counting from index 0 */
int route_stack_size;
int curr_action_line;
char *curr_action_file;
static int for_each_handler(struct sip_msg *msg, struct action *a);
static int route_param_get(struct sip_msg *msg, pv_param_t *ip,
pv_value_t *res, void *params, void *extra);
/* 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, _;
str top_route;
if (route_stack_size > ROUTE_MAX_REC_LEV) {
get_top_route_type(&top_route, &_);
LM_ERR("route recursion limit reached, giving up! (nested routes: %d, "
"first: '%.*s', last: '%s')!\n", route_stack_size,
top_route.len, top_route.s, route_stack[ROUTE_MAX_REC_LEV]);
ret=E_UNSPEC;
goto error;
}
if (a==0){
LM_WARN("null action list (route stack size: %d)\n",
route_stack_size);
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;
return ret;
error:
return ret;
}
int _run_actions(struct action *a, struct sip_msg *msg)
{
return run_actions(a, msg);
}
int inside_error_route;
void run_error_route(struct sip_msg* msg, int init_route_stack)
{
int old_route;
LM_DBG("triggering\n");
inside_error_route = 1;
if (init_route_stack) {
swap_route_type(old_route, ERROR_ROUTE);
route_stack[0] = NULL;
route_stack_start = 0;
route_stack_size = 1;
run_actions(sroutes->error.a, msg);
set_route_type(old_route);
} else {
route_params_push_level("!error_route", NULL, 0, route_param_get);
run_actions(sroutes->error.a, msg);
route_params_pop_level();
}
/* reset error info */
init_err_info();
inside_error_route = 0;
}
/* 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 && sroutes->error.a!=NULL &&
(route_type&(ONREPLY_ROUTE|LOCAL_ROUTE))==0 && !inside_error_route)
run_error_route(msg, 0);
/* continue or not ? */
if (action_flags & (ACT_FL_RETURN | ACT_FL_EXIT | ACT_FL_BREAK))
break;
}
return ret;
}
int run_top_route(struct script_route sr, struct sip_msg* msg)
{
static int recursing;
int bk_action_flags, route_stack_start_bkp = -1, route_stack_size_bkp;
int ret;
context_p ctx = NULL;
bk_action_flags = action_flags;
action_flags = 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));
set_global_context(ctx);
}
/* the recursion support allows run_top_route() to be freely called from
* other modules (e.g. dialog) in order to provide contextless script
* callbacks using routes, without losing the original route stack */
if (recursing) {
route_stack_start_bkp = route_stack_start;
route_stack_size_bkp = route_stack_size;
route_stack_start = route_stack_size;
route_stack_size += 1;
} else {
route_stack_start = 0;
route_stack_size = 1;
recursing = 1;
}
if (route_type & (ERROR_ROUTE|LOCAL_ROUTE|STARTUP_ROUTE) ||
(route_type &
(REQUEST_ROUTE|ONREPLY_ROUTE) && !strcmp(sr.name, "0")))
route_stack[route_stack_start] = NULL;
else
route_stack[route_stack_start] = sr.name;
run_actions(sr.a, msg);
ret = action_flags;
if (route_stack_start_bkp != -1) {
route_stack_size = route_stack_size_bkp;
route_stack_start = route_stack_start_bkp;
} else {
recursing = 0;
}
action_flags = bk_action_flags;
/* reset script tracing */
use_script_trace = 0;
if (ctx && current_processing_ctx) {
context_destroy(CONTEXT_GLOBAL, ctx);
context_free(ctx);
set_global_context(NULL);
}
return ret;
}
/* execute assignment operation */
int do_assign(struct sip_msg* msg, struct action* a)
{
str st;
int ret;
pv_value_t lval, val;
pv_spec_p dspec;
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 (a->type) {
case EQ_T:
case COLONEQ_T:
break;
case PLUSEQ_T:
case MINUSEQ_T:
case DIVEQ_T:
case MULTEQ_T:
case MODULOEQ_T:
case BANDEQ_T:
case BOREQ_T:
case BXOREQ_T:
if (pv_get_spec_value(msg, dspec, &lval) != 0) {
LM_ERR("failed to get left-hand side value\n");
goto error;
}
if (lval.flags & PV_VAL_NULL || val.flags & PV_VAL_NULL) {
LM_ERR("NULL value(s) in complex assignment expressions "
"(+=, -=, etc.)\n");
goto error;
}
/* both include STR versions and neither is primarily an INT */
if ((lval.flags & PV_VAL_STR) && (val.flags & PV_VAL_STR) &&
!(lval.flags & PV_TYPE_INT) && !(val.flags & PV_TYPE_INT)) {
val.ri = 0;
if (a->type != PLUSEQ_T)
goto bad_operands;
if (!(val.flags & PV_VAL_PKG)) {
st = val.rs;
val.rs.s = pkg_malloc(val.rs.len + lval.rs.len + 1);
if (!val.rs.s) {
val.rs.s = st.s;
LM_ERR("oom 1\n");
goto error;
}
memcpy(val.rs.s, lval.rs.s, lval.rs.len);
memcpy(val.rs.s + lval.rs.len, st.s, st.len);
val.rs.len += lval.rs.len;
val.rs.s[val.rs.len] = '\0';
val.flags |= PV_VAL_PKG;
if (val.flags & PV_VAL_SHM) {
val.flags &= ~PV_VAL_SHM;
shm_free(st.s);
}
} else {
st.len = val.rs.len;
if (pkg_str_extend(&val.rs, val.rs.len + lval.rs.len + 1) != 0) {
LM_ERR("oom 2\n");
goto error;
}
val.rs.len--;
memmove(val.rs.s + lval.rs.len, val.rs.s, st.len);
memcpy(val.rs.s, lval.rs.s, lval.rs.len);
val.rs.s[val.rs.len] = '\0';
}
} else if ((lval.flags & PV_VAL_INT) && (val.flags & PV_VAL_INT)) {
if (val.flags & PV_VAL_STR)
val.flags &= ~PV_VAL_STR;
switch (a->type) {
case PLUSEQ_T:
val.ri = lval.ri + val.ri;
break;
case MINUSEQ_T:
val.ri = lval.ri - val.ri;
break;
case DIVEQ_T:
val.ri = lval.ri / val.ri;
break;
case MULTEQ_T:
val.ri = lval.ri * val.ri;
break;
case MODULOEQ_T:
val.ri = lval.ri % val.ri;
break;
case BANDEQ_T:
val.ri = lval.ri & val.ri;
break;
case BOREQ_T:
val.ri = lval.ri | val.ri;
break;
case BXOREQ_T:
val.ri = lval.ri ^ val.ri;
break;
}
} else {
goto bad_operands;
}
break;
default:
LM_ALERT("BUG -> unknown op type %d\n", a->type);
goto error;
}
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;
}
}
pv_value_destroy(&val);
return 1;
bad_operands:
LM_ERR("unsupported operand type(s) for %s: %s and %s\n",
assignop_str(a->type),
lval.flags & PV_VAL_STR ? "string" : "int",
val.flags & PV_VAL_STR ? "string" : "int");
pv_value_destroy(&val);
return -1;
error:
LM_ERR("error at %s:%d\n", a->file, a->line);
error2:
pv_value_destroy(&val);
return -1;
}
static pv_value_t *route_params_expand(struct sip_msg *msg,
void *params, int params_no)
{
str tmp;
int index;
pv_value_t *route_vals, *res;
action_elem_p actions = (action_elem_p)params;
route_vals = pkg_malloc(params_no * sizeof(*route_vals));
if (!route_vals) {
LM_ERR("oom\n");
return NULL;
}
for (index = 0; index < params_no; index++) {
res = &route_vals[index];
switch (actions[index].type)
{
case STRING_ST:
res->rs.s = actions[index].u.string;
res->rs.len = strlen(res->rs.s);
res->flags = PV_VAL_STR;
break;
case NUMBER_ST:
res->ri = actions[index].u.number;
res->flags = PV_VAL_STR|PV_VAL_INT|PV_TYPE_INT;
break;
case SCRIPTVAR_ST:
if(pv_get_spec_value(msg, (pv_spec_p)actions[index].u.data, res)==0)
{
if (res->flags & PV_VAL_STR) {
/* but we need to duplicate the string */
if (pkg_str_dup(&tmp, &res->rs) == 0) {
res->rs.s = tmp.s;
res->flags |= PV_VAL_PKG;
break;
} else {
LM_ERR("cannot duplicate param value\n");
}
} else {
break;
}
} else {
LM_ERR("cannot get spec value\n");
}
/* fallback */
default:
LM_ALERT("BUG: invalid parameter type %d\n",
actions[index].type);
/* fallback */
case NULLV_ST:
res->rs.s = NULL;
res->rs.len = res->ri = 0;
res->flags = PV_VAL_NULL;
break;
}
}
return route_vals;
}
static void route_params_release(pv_value_t *params, int params_no)
{
int p;
for (p = 0; p < params_no; p++) {
if (params[p].flags & PV_VAL_PKG)
pkg_free(params[p].rs.s);
}
pkg_free(params);
}
/* function used to get parameter from a route scope */
static int route_param_get(struct sip_msg *msg, pv_param_t *ip,
pv_value_t *res, void *_params, void *_extra)
{
int index;
pv_value_t tv;
pv_value_t *params = (pv_value_t *)_params;
int params_no = (int)(unsigned long)_extra;
if (params_no <= 0) {
LM_DBG("route without parameters\n");
return pv_get_null(msg, ip, res);
}
if(ip->pvn.type==PV_NAME_INTSTR)
{
if (ip->pvn.u.isname.type != 0)
{
LM_ERR("route $param variable accepts only integer indexes\n");
return -1;
}
index = ip->pvn.u.isname.name.n;
} else
{
/* pvar -> it might be another $param variable! */
route_rec_level--;
if(pv_get_spec_value(msg, (pv_spec_p)(ip->pvn.u.dname), &tv)!=0)
{
LM_ERR("cannot get spec value\n");
route_rec_level++;
return -1;
}
route_rec_level++;
if(tv.flags&PV_VAL_NULL || tv.flags&PV_VAL_EMPTY)
{
LM_ERR("null or empty name\n");
return -1;
}
if (!(tv.flags&PV_VAL_INT) || str2int(&tv.rs,(unsigned int*)&index) < 0)
{
LM_ERR("invalid index <%.*s>\n", tv.rs.len, tv.rs.s);
return -1;
}
}
if (!params)
{
LM_DBG("no parameter specified for this route\n");
return pv_get_null(msg, ip, res);
}
if (index < 1 || index > params_no)
{
LM_DBG("no such parameter index %d\n", index);
return pv_get_null(msg, ip, res);
}
/* the parameters start at 0, whereas the index starts from 1 */
index--;
*res = params[index];
res->flags &= ~PV_VAL_PKG; /* not interested in this flag */
if (res->flags & PV_VAL_INT)
res->rs.s = int2str(res->ri, &res->rs.len);
return 0;
}
#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 i;
int len;
int cmatch;
struct action *aitem;
struct action *adefault;
pv_spec_t *spec;
pv_value_t val;
struct timeval start;
int end_time;
cmd_export_t *cmd = NULL;
acmd_export_t *acmd;
void* cmdp[MAX_CMD_PARAMS];
pv_value_t tmp_vals[MAX_CMD_PARAMS];
pv_value_t *route_p;
str sval;
/* 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 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 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 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:
init_str(&sval, "unknown");
switch (a->elem[0].type) {
case NUMBER_ST:
i = a->elem[0].u.number;
break;
case SCRIPTVAR_ST:
if (pv_get_spec_value(msg, a->elem[0].u.item, &val) < 0) {
LM_ERR("cannot print route name!\n");
i = -1;
break;
}
if (val.flags & PV_VAL_INT)
sval.s = int2str(val.ri, &sval.len);
else
sval = val.rs;
i = get_script_route_ID_by_name_str(&sval, sroutes->request, RT_NO);
break;
case SCRIPTVAR_ELEM_ST:
if (pv_printf_s(msg, a->elem[0].u.data, &sval) < 0) {
LM_ERR("cannot print route name!\n");
i = -1;
break;
}
i = get_script_route_ID_by_name_str(&sval, sroutes->request, RT_NO);
break;
default:
i = -1;
break;
}
if (i == -1) {
LM_ALERT("unknown route(%.*s) (type %d)\n", sval.len, sval.s,
a->elem[0].type);
ret=E_BUG;
break;
}
if ((i>=RT_NO)||(i<0)){
LM_BUG("invalid routing table number in route(%u)\n", i);
ret=E_CFG;
break;
}
script_trace("route", sroutes->request[i].name,
msg, a->file, a->line) ;
/* check if the route has parameters */
if (a->elem[1].type != 0) {
if (a->elem[1].type != NUMBER_ST || a->elem[2].type != SCRIPTVAR_ST) {
LM_ALERT("BUG in route() type %d/%d\n",
a->elem[1].type, a->elem[2].type);
ret=E_BUG;
break;
}
len = a->elem[1].u.number;
route_p = route_params_expand(msg, a->elem[2].u.data, len);
if (!route_p) {
LM_ERR("could not expand route params!\n");
ret=E_OUT_OF_MEM;
}
route_params_push_level(sroutes->request[i].name,
route_p, (void *)(unsigned long)len, route_param_get);
return_code=run_actions(sroutes->request[i].a, msg);
route_params_release(route_p, len);
route_params_pop_level();
} else {
route_params_push_level(sroutes->request[i].name, NULL, 0, route_param_get);
return_code=run_actions(sroutes->request[i].a, msg);
route_params_pop_level();
}
ret=return_code;
break;
case IF_T:
script_trace("core", "if", msg, a->file, a->line) ;
/* 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);
/* set return code to expr value */
if (v<0 || (action_flags&ACT_FL_RETURN)
|| (action_flags&ACT_FL_EXIT) ){
if (v==EXPR_DROP || (action_flags&ACT_FL_RETURN)
|| (action_flags&ACT_FL_EXIT) ){ /* hack to quit on DROP*/
ret=0;
return_code = 0;
break;
}else{
LM_WARN("error in expression at %s:%d\n",
a->file, a->line);
}
}
ret=1; /*default is continue */
if (v>0) {
if ((a->elem[1].type==ACTIONS_ST)&&a->elem[1].u.data){
ret=run_action_list(
(struct action*)a->elem[1].u.data,msg );
return_code = ret;
} else return_code = v;
}else{
if ((a->elem[2].type==ACTIONS_ST)&&a->elem[2].u.data){
ret=run_action_list(
(struct action*)a->elem[2].u.data,msg);
return_code = ret;
} else return_code = v;
}
}
break;
case WHILE_T:
script_trace("core", "while", msg, a->file, a->line) ;
/* if null expr => ignore if? */
if ((a->elem[0].type==EXPR_ST)&&a->elem[0].u.data){
len = 0;
while(1)
{
if(len++ >= max_while_loops)
{
LM_ERR("max while loops reached (%d), increase the "
"'max_while_loops' global!\n", max_while_loops);
break;
}
v=eval_expr((struct expr*)a->elem[0].u.data, msg, 0);
/* set return code to expr value */
if (v<0 || (action_flags&ACT_FL_RETURN)
|| (action_flags&ACT_FL_EXIT) ){
if (v==EXPR_DROP || (action_flags&ACT_FL_RETURN)
|| (action_flags&ACT_FL_EXIT) ){
ret=0;
return_code = 0;
break;
}else{
LM_WARN("error in expression at %s:%d\n",
a->file, a->line);
}
}
ret=1; /*default is continue */
if (v>0) {
if ((a->elem[1].type==ACTIONS_ST)
&&a->elem[1].u.data){
ret=run_action_list(
(struct action*)a->elem[1].u.data,msg );
/* check if return was done */
if (action_flags &
(ACT_FL_RETURN|ACT_FL_EXIT|ACT_FL_BREAK)) {
action_flags &= ~ACT_FL_BREAK;
break;
}
return_code = ret;
} else {
/* we should not get here */
return_code = v;
break;
}
} else {
/* condition was false */
return_code = v;
break;
}
}
}
break;
case BREAK_T:
script_trace("core", "break", msg, a->file, a->line) ;
action_flags |= ACT_FL_BREAK;
break;
case FOR_EACH_T:
script_trace("core", "for-each", msg, a->file, a->line) ;
ret = for_each_handler(msg, a);
break;
case XDBG_T:
script_trace("core", "xdbg", msg, a->file, a->line) ;
if (a->elem[0].type == SCRIPTVAR_ELEM_ST)
{
ret = xdbg(msg, a->elem[0].u.data);
if (ret < 0)
{
LM_ERR("error while printing xdbg message\n");
break;
}
}
else
{
LM_ALERT("BUG in xdbg() type %d\n", a->elem[0].type);
ret=E_BUG;
}
break;
case XLOG_T:
script_trace("core", "xlog", msg, a->file, a->line) ;
if (a->elem[1].u.data != NULL)
{
if (a->elem[1].type != SCRIPTVAR_ELEM_ST)
{
LM_ALERT("BUG in xlog() type %d\n", a->elem[1].type);
ret=E_BUG;
break;
}
if (a->elem[0].type != STR_ST)
{
LM_ALERT("BUG in xlog() type %d\n", a->elem[0].type);
ret=E_BUG;
break;
}
ret = xlog_2(msg,a->elem[0].u.data, a->elem[1].u.data);
if (ret < 0)
{
LM_ERR("error while printing xlog message\n");
break;
}
}
else
{
if (a->elem[0].type != SCRIPTVAR_ELEM_ST)
{
LM_ALERT("BUG in xlog() type %d\n", a->elem[0].type);
ret=E_BUG;
break;
}
ret = xlog_1(msg,a->elem[0].u.data);
if (ret < 0)
{
LM_ERR("error while printing xlog message\n");
break;
}
}
break;
case SWITCH_T:
script_trace("core", "switch", msg, a->file, a->line) ;
#ifdef EXTRA_DEBUG
if (a->elem[0].type!=SCRIPTVAR_ST || a->elem[1].type!=ACTIONS_ST) {
LM_ALERT("BUG in switch() type %d\n",
a->elem[0].type);
ret=E_BUG;
break;
}
#endif
spec = (pv_spec_t*)a->elem[0].u.data;
if(pv_get_spec_value(msg, spec, &val)!=0)
{
LM_ALERT("BUG - no value in switch()\n");
ret=E_BUG;
break;
}
return_code=1;
adefault = NULL;
aitem = (struct action*)a->elem[1].u.data;
cmatch=0;
while(aitem)
{
if((unsigned char)aitem->type==DEFAULT_T)
adefault=aitem;
if(cmatch==0)
{
if(aitem->elem[0].type==STR_ST)
{
if(val.flags&PV_VAL_STR
&& val.rs.len==aitem->elem[0].u.s.len
&& strncasecmp(val.rs.s, aitem->elem[0].u.s.s,
val.rs.len)==0)
cmatch = 1;
} else { /* number */
if(val.flags&PV_VAL_INT &&
val.ri==aitem->elem[0].u.number)
cmatch = 1;
}
}
if(cmatch==1)
{
if(aitem->elem[1].u.data)