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kamailio/modules_s/cpl-c/cpl.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* -------
* 2003-03-11: New module interface (janakj)
* 2003-03-16: flags export parameter added (janakj)
* 2003-11-11: build_lump_rpl() removed, add_lump_rpl() has flags (bogdan)
* 2004-06-06 updated to the new DB api (andrei)
* 2004-06-14: all global variables merged into cpl_env and cpl_fct;
* case_sensitive and realm_prefix added for building AORs - see
* build_userhost (bogdan)
* 2004-10-09: added process_register_norpl to allow register processing
* without sending the reply(bogdan) - based on a patch sent by
* Christopher Crawford
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include "../../mem/shm_mem.h"
#include "../../mem/mem.h"
#include "../../sr_module.h"
#include "../../str.h"
#include "../../ut.h"
#include "../../dprint.h"
#include "../../data_lump_rpl.h"
#include "../../usr_avp.h"
#include "../../parser/parse_uri.h"
#include "../../parser/parse_from.h"
#include "../../parser/parse_content.h"
#include "../../parser/parse_disposition.h"
#include "../../lib/srdb2/db.h"
#include "../../cfg/cfg_struct.h"
#include "cpl_run.h"
#include "cpl_env.h"
#include "cpl_db.h"
#include "cpl_loader.h"
#include "cpl_parser.h"
#include "cpl_nonsig.h"
#include "cpl_rpc.h"
#include "loc_set.h"
#define MAX_PROXY_RECURSE 10
#define MAX_USERHOST_LEN 256
/* modules param variables */
static char *DB_URL = 0; /* database url */
static char *DB_TABLE = 0; /* */
static char *dtd_file = 0; /* name of the DTD file for CPL parser */
static char *lookup_domain = 0;
static pid_t aux_process = 0; /* pid of the private aux. process */
static char *timer_avp = 0; /* name of variable timer AVP */
struct cpl_enviroment cpl_env = {
0, /* no cpl logging */
0, /* recurse proxy level is 0 */
0, /* no script route to be run before proxy */
6, /* nat flag */
0, /* user part is not case sensitive */
{0,0}, /* no domain prefix to be ignored */
{-1,-1}, /* communication pipe to aux_process */
{0,0}, /* original TZ \0 terminated "TZ=value" format */
0, /* udomain */
0, /* no branches on lookup */
0, /* timer avp type */
/*(int_str)*/{ 0 } /* timer avp name/ID */
};
struct cpl_functions cpl_fct;
MODULE_VERSION
static int cpl_invoke_script (struct sip_msg* msg, char* str, char* str2);
static int w_process_register(struct sip_msg* msg, char* str, char* str2);
static int w_process_register_norpl(struct sip_msg* msg, char* str,char* str2);
static int cpl_process_register(struct sip_msg* msg, int no_rpl);
static int fixup_cpl_run_script(void** param, int param_no);
static int cpl_init(void);
static int cpl_child_init(int rank);
static int cpl_exit(void);
/*
* Exported functions
*/
static cmd_export_t cmds[] = {
{"cpl_run_script",cpl_invoke_script,2,fixup_cpl_run_script,REQUEST_ROUTE},
{"cpl_process_register",w_process_register,0,0,REQUEST_ROUTE},
{"cpl_process_register_norpl",w_process_register_norpl,0,0,REQUEST_ROUTE},
{0, 0, 0, 0, 0}
};
/*
* Exported parameters
*/
static param_export_t params[] = {
{"cpl_db", PARAM_STRING, &DB_URL },
{"cpl_table", PARAM_STRING, &DB_TABLE },
{"cpl_dtd_file", PARAM_STRING, &dtd_file },
{"proxy_recurse", PARAM_INT, &cpl_env.proxy_recurse },
{"proxy_route", PARAM_INT, &cpl_env.proxy_route },
{"nat_flag", PARAM_INT, &cpl_env.nat_flag },
{"log_dir", PARAM_STRING, &cpl_env.log_dir },
{"case_sensitive", PARAM_INT, &cpl_env.case_sensitive },
{"realm_prefix", PARAM_STR, &cpl_env.realm_prefix },
{"lookup_domain", PARAM_STRING, &lookup_domain },
{"lookup_append_branches", PARAM_INT, &cpl_env.lu_append_branches},
{"timer_avp", PARAM_STRING, &timer_avp },
{0, 0, 0}
};
struct module_exports exports = {
"cpl-c",
cmds, /* Exported functions */
cpl_rpc_methods, /* RPC methods */
params, /* Exported parameters */
cpl_init, /* Module initialization function */
(response_function) 0,
(destroy_function) cpl_exit,
0,
(child_init_function) cpl_child_init /* per-child init function */
};
static int fixup_cpl_run_script(void** param, int param_no)
{
long flag;
if (param_no==1) {
if (!strcasecmp( "incoming", *param))
flag = CPL_RUN_INCOMING;
else if (!strcasecmp( "outgoing", *param))
flag = CPL_RUN_OUTGOING;
else {
LOG(L_ERR,"ERROR:fixup_cpl_run_script: script directive \"%s\""
" unknown!\n",(char*)*param);
return E_UNSPEC;
}
pkg_free(*param);
*param=(void*)flag;
return 0;
} else if (param_no==2) {
if ( !strcasecmp("is_stateless", *param) ) {
flag = 0;
} else if ( !strcasecmp("is_stateful", *param) ) {
flag = CPL_IS_STATEFUL;
} else if ( !strcasecmp("force_stateful", *param) ) {
flag = CPL_FORCE_STATEFUL;
} else {
LOG(L_ERR,"ERROR:fixup_cpl_run_script: flag \"%s\" (second param)"
" unknown!\n",(char*)*param);
return E_UNSPEC;
}
pkg_free(*param);
*param=(void*)flag;
}
return 0;
}
static int cpl_init(void)
{
bind_usrloc_t bind_usrloc;
load_tm_f load_tm;
struct stat stat_t;
char *ptr;
int val;
str foo;
LOG(L_INFO,"CPL - initializing\n");
/* check the module params */
if (DB_URL==0) {
LOG(L_CRIT,"ERROR:cpl_init: mandatory parameter \"cpl_db\" "
"found empty\n");
goto error;
}
if (DB_TABLE==0) {
LOG(L_CRIT,"ERROR:cpl_init: mandatory parameter \"cpl_table\" "
"found empty\n");
goto error;
}
if (cpl_env.proxy_recurse>MAX_PROXY_RECURSE) {
LOG(L_CRIT,"ERROR:cpl_init: value of proxy_recurse param (%d) exceeds "
"the maximum safety value (%d)\n",
cpl_env.proxy_recurse,MAX_PROXY_RECURSE);
goto error;
}
/* fix the timer_avp name */
if (timer_avp) {
foo.s = timer_avp;
foo.len = strlen(foo.s);
if (parse_avp_spec(&foo,&cpl_env.timer_avp_type,&cpl_env.timer_avp,0)<0){
LOG(L_CRIT,"ERROR:cpl_init: invalid timer AVP specs \"%s\"\n",
timer_avp);
goto error;
}
if (cpl_env.timer_avp_type&AVP_NAME_STR && cpl_env.timer_avp.s.s==foo.s) {
cpl_env.timer_avp.s = foo;
}
}
if (dtd_file==0) {
LOG(L_CRIT,"ERROR:cpl_init: mandatory parameter \"cpl_dtd_file\" "
"found empty\n");
goto error;
} else {
/* check if the dtd file exists */
if (stat( dtd_file, &stat_t)==-1) {
LOG(L_ERR,"ERROR:cpl_init: checking file \"%s\" status failed;"
" stat returned %s\n",dtd_file,strerror(errno));
goto error;
}
if ( !S_ISREG( stat_t.st_mode ) ) {
LOG(L_ERR,"ERROR:cpl_init: dir \"%s\" is not a regular file!\n",
dtd_file);
goto error;
}
if (access( dtd_file, R_OK )==-1) {
LOG(L_ERR,"ERROR:cpl_init: checking file \"%s\" for permissions "
"failed; access returned %s\n",dtd_file,strerror(errno));
goto error;
}
}
if (cpl_env.log_dir==0) {
LOG(L_INFO,"INFO:cpl_init: log_dir param found void -> logging "
" disabled!\n");
} else {
if ( strlen(cpl_env.log_dir)>MAX_LOG_DIR_SIZE ) {
LOG(L_ERR,"ERROR:cpl_init: dir \"%s\" has a too long name :-(!\n",
cpl_env.log_dir);
goto error;
}
/* check if the dir exists */
if (stat( cpl_env.log_dir, &stat_t)==-1) {
LOG(L_ERR,"ERROR:cpl_init: checking dir \"%s\" status failed;"
" stat returned %s\n",cpl_env.log_dir,strerror(errno));
goto error;
}
if ( !S_ISDIR( stat_t.st_mode ) ) {
LOG(L_ERR,"ERROR:cpl_init: dir \"%s\" is not a directory!\n",
cpl_env.log_dir);
goto error;
}
if (access( cpl_env.log_dir, R_OK|W_OK )==-1) {
LOG(L_ERR,"ERROR:cpl_init: checking dir \"%s\" for permissions "
"failed; access returned %s\n",
cpl_env.log_dir, strerror(errno));
goto error;
}
}
/* import the TM auto-loading function */
if ( !(load_tm=(load_tm_f)find_export("load_tm", NO_SCRIPT, 0))) {
LOG(L_ERR, "ERROR:cpl_c:cpl_init: cannot import load_tm\n");
goto error;
}
/* let the auto-loading function load all TM stuff */
if (load_tm( &(cpl_fct.tmb) )==-1)
goto error;
/* bind the SL API */
if (sl_load_api(&cpl_fct.slb)!=0) {
LM_ERR("cannot bind to SL API\n");
return -1;
}
/* bind to usrloc module if requested */
if (lookup_domain) {
/* import all usrloc functions */
bind_usrloc = (bind_usrloc_t)find_export("ul_bind_usrloc", 1, 0);
if (!bind_usrloc) {
LOG(L_ERR, "ERROR:cpl_c:cpl_init: Can't bind usrloc\n");
goto error;
}
if (bind_usrloc( &(cpl_fct.ulb) ) < 0) {
LOG(L_ERR, "ERROR:cpl_c:cpl_init: importing usrloc failed\n");
goto error;
}
/* convert lookup_domain from char* to udomain_t* pointer */
if (cpl_fct.ulb.register_udomain( lookup_domain, &cpl_env.lu_domain)
< 0) {
LOG(L_ERR, "ERROR:cpl_c:cpl_init: Error while registering domain "
"<%s>\n",lookup_domain);
goto error;
}
} else {
LOG(L_NOTICE,"NOTICE:cpl_init: no lookup_domain given -> disable "
" lookup node\n");
}
/* build a pipe for sending commands to aux process */
if ( pipe( cpl_env.cmd_pipe )==-1 ) {
LOG(L_CRIT,"ERROR:cpl_init: cannot create command pipe: %s!\n",
strerror(errno) );
goto error;
}
/* set the writing non blocking */
if ( (val=fcntl(cpl_env.cmd_pipe[1], F_GETFL, 0))<0 ) {
LOG(L_ERR,"ERROR:cpl_init: getting flags from pipe[1] failed: fcntl "
"said %s!\n",strerror(errno));
goto error;
}
if ( fcntl(cpl_env.cmd_pipe[1], F_SETFL, val|O_NONBLOCK) ) {
LOG(L_ERR,"ERROR:cpl_init: setting flags to pipe[1] failed: fcntl "
"said %s!\n",strerror(errno));
goto error;
}
/* init the CPL parser */
if (init_CPL_parser( dtd_file )!=1 ) {
LOG(L_ERR,"ERROR:cpl_init: init_CPL_parser failed!\n");
goto error;
}
/* make a copy of the original TZ env. variable */
ptr = getenv("TZ");
cpl_env.orig_tz.len = 3/*"TZ="*/ + (ptr?(strlen(ptr)+1):0);
if ( (cpl_env.orig_tz.s=shm_malloc( cpl_env.orig_tz.len ))==0 ) {
LOG(L_ERR,"ERROR:cpl_init: no more shm mem. for saving TZ!\n");
goto error;
}
memcpy(cpl_env.orig_tz.s,"TZ=",3);
if (ptr)
strcpy(cpl_env.orig_tz.s+3,ptr);
/* convert realm_prefix from string null terminated to str */
if (cpl_env.realm_prefix.s) {
/* convert the realm_prefix to lower cases */
strlower( &cpl_env.realm_prefix );
}
/* Register a child process that will keep updating
* its local configuration */
cfg_register_child(1);
return 0;
error:
return -1;
}
static int cpl_child_init(int rank)
{
pid_t pid;
/* don't do anything for main process and TCP manager process */
if (rank==PROC_INIT || rank==PROC_MAIN || rank==PROC_TCP_MAIN)
return 0;
/* only child 1 will fork the aux process */
if (rank==1) {
pid = fork();
if (pid==-1) {
LOG(L_CRIT,"ERROR:cpl_child_init(%d): cannot fork: %s!\n",
rank, strerror(errno));
goto error;
} else if (pid==0) {
/* I'm the child */
/* initialize the config framework */
if (cfg_child_init()) goto error;
cpl_aux_process( cpl_env.cmd_pipe[0], cpl_env.log_dir);
} else {
LOG(L_INFO,"INFO:cpl_child_init(%d): I just gave birth to a child!"
" I'm a PARENT!!\n",rank);
/* I'm the parent -> remember the pid */
aux_process = pid;
}
}
return cpl_db_init(DB_URL, DB_TABLE);
error:
return -1;
}
static int cpl_exit(void)
{
/* free the TZ orig */
if (cpl_env.orig_tz.s)
shm_free(cpl_env.orig_tz.s);
/* if still running, stop the aux process */
if (!aux_process) {
LOG(L_INFO,"INFO:cpl_c:cpl_exit: aux process hasn't been created -> "
"nothing to kill :-(\n");
} else {
/* kill the auxiliary process */
if (kill( aux_process, SIGKILL)!=0) {
if (errno==ESRCH) {
LOG(L_INFO,"INFO:cpl_c:cpl_exit: seems that my child is "
"already dead! :-((\n");
} else {
LOG(L_ERR,"ERROR:cpl_c:cpl_exit: killing the aux. process "
"failed! kill said: %s\n",strerror(errno));
return -1;
}
} else {
LOG(L_INFO,"INFO:cl_c:cpl_exit: I have blood on my hands!! I just"
" killed my own child!");
}
}
return 0;
}
#define BUILD_UH_SHM (1<<0)
#define BUILD_UH_ADDSIP (1<<1)
static inline int build_userhost(struct sip_uri *uri, str *uh, int flg)
{
static char buf[MAX_USERHOST_LEN];
unsigned char do_strip;
char *p;
int i;
/* do we need to strip realm prefix? */
do_strip = 0;
if (cpl_env.realm_prefix.len && cpl_env.realm_prefix.len<uri->host.len) {
for( i=cpl_env.realm_prefix.len-1 ; i>=0 ; i-- )
if ( cpl_env.realm_prefix.s[i]!=((uri->host.s[i])|(0x20)) )
break;
if (i==-1)
do_strip = 1;
}
/* calculate the len (without terminating \0) */
uh->len = 4*((flg&BUILD_UH_ADDSIP)!=0) + uri->user.len + 1 +
uri->host.len - do_strip*cpl_env.realm_prefix.len;
if (flg&BUILD_UH_SHM) {
uh->s = (char*)shm_malloc( uh->len + 1 );
if (!uh->s) {
LOG(L_ERR,"ERROR:cpl-c:build_userhost: no more shm memory.\n");
return -1;
}
} else {
uh->s = buf;
if ( uh->len > MAX_USERHOST_LEN ) {
LOG(L_ERR,"ERROR:cpl-c:build_userhost: user+host longer than %d\n",
MAX_USERHOST_LEN);
return -1;
}
}
/* build user@host */
p = uh->s;
if (flg&BUILD_UH_ADDSIP) {
memcpy( uh->s, "sip:", 4);
p += 4;
}
/* user part */
if (cpl_env.case_sensitive) {
memcpy( p, uri->user.s, uri->user.len);
p += uri->user.len;
} else {
for(i=0;i<uri->user.len;i++)
*(p++) = (0x20)|(uri->user.s[i]);
}
*(p++) = '@';
/* host part in lower cases */
for( i=do_strip*cpl_env.realm_prefix.len ; i< uri->host.len ; i++ )
*(p++) = (0x20)|(uri->host.s[i]);
*(p++) = 0;
/* sanity check */
if (p-uh->s!=uh->len+1) {
LOG(L_CRIT,"BUG:cpl-c:build_userhost: buffer overflow l=%d,w=%ld\n",
uh->len,(long)(p-uh->s));
return -1;
}
return 0;
}
static inline int get_dest_user(struct sip_msg *msg, str *uh, int flg)
{
struct sip_uri uri;
/* get the user_name from new_uri/RURI/To */
DBG("DEBUG:cpl-c:get_dest_user: trying to get user from new_uri\n");
if ( !msg->new_uri.s || parse_uri( msg->new_uri.s,msg->new_uri.len,&uri)==-1
|| !uri.user.len )
{
DBG("DEBUG:cpl-c:get_dest_user: trying to get user from R_uri\n");
if ( parse_uri( msg->first_line.u.request.uri.s,
msg->first_line.u.request.uri.len ,&uri)==-1 || !uri.user.len )
{
DBG("DEBUG:cpl-c:get_dest_user: trying to get user from To\n");
if ( (!msg->to&&( (parse_headers(msg,HDR_TO_F,0)==-1) ||
!msg->to)) ||
parse_uri( get_to(msg)->uri.s, get_to(msg)->uri.len, &uri)==-1
|| !uri.user.len)
{
LOG(L_ERR,"ERROR:cpl-c:get_dest_user: unable to extract user"
" name from RURI or To header!\n");
return -1;
}
}
}
return build_userhost( &uri, uh, flg);
}
static inline int get_orig_user(struct sip_msg *msg, str *uh, int flg)
{
struct to_body *from;
struct sip_uri uri;
/* if it's outgoing -> get the user_name from From */
/* parsing from header */
DBG("DEBUG:cpl-c:get_orig_user: trying to get user from From\n");
if ( parse_from_header( msg )==-1 ) {
LOG(L_ERR,"ERROR:cpl-c:get_orig_user: unable to extract URI "
"from FROM header\n");
return -1;
}
from = (struct to_body*)msg->from->parsed;
/* parse the extracted uri from From */
if (parse_uri( from->uri.s, from->uri.len, &uri)||!uri.user.len) {
LOG(L_ERR,"ERROR:cpl-c:get_orig_user: unable to extract user name "
"from URI (From header)\n");
return -1;
}
return build_userhost( &uri, uh, flg);
}
/* Params:
* str1 - as unsigned int - can be CPL_RUN_INCOMING or CPL_RUN_OUTGOING
* str2 - as unsigned int - flags regarding state(less)|(ful)
*/
static int cpl_invoke_script(struct sip_msg* msg, char* str1, char* str2)
{
struct cpl_interpreter *cpl_intr;
str user;
str loc;
str script;
/* get the user_name */
if ( ((unsigned long)str1)&CPL_RUN_INCOMING ) {
/* if it's incoming -> get the destination user name */
if (get_dest_user( msg, &user, BUILD_UH_SHM)==-1)
goto error0;
} else {
/* if it's outgoing -> get the origin user name */
if (get_orig_user( msg, &user, BUILD_UH_SHM)==-1)
goto error0;
}
/* get the script for this user */
if (get_user_script(&user, &script, 1)==-1)
goto error1;
/* has the user a non-empty script? if not, return normally, allowing ser to
* continue its script */
if ( !script.s || !script.len ) {
shm_free(user.s);
return 1;
}
/* build a new script interpreter */
if ( (cpl_intr=new_cpl_interpreter(msg,&script))==0 )
goto error2;
/* set the flags */
cpl_intr->flags =(unsigned int)((unsigned long)str1)|((unsigned long)str2);
/* attache the user */
cpl_intr->user = user;
/* for OUTGOING we need also the destination user for init. with him
* the location set */
if ( ((unsigned long)str1)&CPL_RUN_OUTGOING ) {
if (get_dest_user( msg, &loc,BUILD_UH_ADDSIP)==-1)
goto error3;
if (add_location( &(cpl_intr->loc_set), &loc,10,CPL_LOC_DUPL)==-1)
goto error3;
}
/* since the script interpretation can take some time, it will be better to
* send a 100 back to prevent the UAC to retransmit
if ( cpl_tmb.t_reply( msg, (int)100, "Running cpl script" )!=1 ) {
LOG(L_ERR,"ERROR:cpl_invoke_script: unable to send 100 reply!\n");
goto error3;
}
* this should be done from script - it's much sooner ;-) */
/* run the script */
switch (cpl_run_script( cpl_intr )) {
case SCRIPT_DEFAULT:
free_cpl_interpreter( cpl_intr );
return 1; /* execution of ser's script will continue */
case SCRIPT_END:
free_cpl_interpreter( cpl_intr );
case SCRIPT_TO_BE_CONTINUED:
return 0; /* break the SER script */
case SCRIPT_RUN_ERROR:
case SCRIPT_FORMAT_ERROR:
goto error3;
}
return 1;
error3:
free_cpl_interpreter( cpl_intr );
return -1;
error2:
shm_free(script.s);
error1:
shm_free(user.s);
error0:
return -1;
}
#define CPL_SCRIPT "script"
#define CPL_SCRIPT_LEN (sizeof(CPL_SCRIPT)-1)
#define ACTION_PARAM "action"
#define ACTION_PARAM_LEN (sizeof(ACTION_PARAM)-1)
#define STORE_ACTION "store"
#define STORE_ACTION_LEN (sizeof(STORE_ACTION)-1)
#define REMOVE_ACTION "remove"
#define REMOVE_ACTION_LEN (sizeof(REMOVE_ACTION)-1)
#define REMOVE_SCRIPT 0xcaca
#define STORE_SCRIPT 0xbebe
#define CONTENT_TYPE_HDR ("Content-Type: application/cpl-xml"CRLF)
#define CONTENT_TYPE_HDR_LEN (sizeof(CONTENT_TYPE_HDR)-1)
struct cpl_error {
int err_code;
char *err_msg;
};
static struct cpl_error bad_req = {400,"Bad request"};
static struct cpl_error intern_err = {500,"Internal server error"};
static struct cpl_error bad_cpl = {400,"Bad CPL script"};
static struct cpl_error *cpl_err = &bad_req;
static inline int do_script_action(struct sip_msg *msg, int action)
{
str body = STR_NULL;
str user = STR_NULL;
str bin = STR_NULL;
str log = STR_NULL;
/* content-length (if present) */
if ( !msg->content_length &&
((parse_headers(msg, HDR_CONTENTLENGTH_F, 0)==-1)
|| !msg->content_length) )
{
LOG(L_ERR,"ERROR:cpl-c:do_script_action: no Content-Length "
"hdr found!\n");
goto error;
}
body.len = get_content_length( msg );
/* get the user name */
if (get_dest_user( msg, &user, 0)==-1)
goto error;
/* we have the script and the user */
switch (action) {
case STORE_SCRIPT :
/* check the len -> it must not be 0 */
if (body.len==0) {
LOG(L_ERR,"ERROR:cpl-c:do_script_action: 0 content-len found "
"for store\n");
goto error_1;
}
/* get the message's body */
body.s = get_body( msg );
if (body.s==0) {
LOG(L_ERR,"ERROR:cpl-c:do_script_action: cannot extract "
"body from msg!\n");
goto error_1;
}
/* now compile the script and place it into database */
/* get the binary coding for the XML file */
if ( encodeCPL( &body, &bin, &log)!=1) {
cpl_err = &bad_cpl;
goto error_1;
}
/* write both the XML and binary formats into database */
if (write_to_db(user.s, &body, &bin)!=1) {
cpl_err = &intern_err;
goto error_1;
}
break;
case REMOVE_SCRIPT:
/* check the len -> it must be 0 */
if (body.len!=0) {
LOG(L_ERR,"ERROR:cpl-c:do_script_action: non-0 content-len "
"found for remove\n");
goto error_1;
}
/* remove the script for the user */
if (rmv_from_db(user.s)!=1) {
cpl_err = &intern_err;
goto error_1;
}
break;
}
if (log.s) pkg_free( log.s );
return 0;
error_1:
if (log.s) pkg_free( log.s );
error:
return -1;
}
static inline int do_script_download(struct sip_msg *msg)
{
str user = STR_NULL;
str script = STR_NULL;
/* get the destination user name */
if (get_dest_user( msg, &user, 0)==-1)
goto error;
/* get the user's xml script from the database */
if (get_user_script(&user, &script, 0)==-1)
goto error;
/* add a lump with content-type hdr */
if (add_lump_rpl( msg, CONTENT_TYPE_HDR, CONTENT_TYPE_HDR_LEN,
LUMP_RPL_HDR)==0) {
LOG(L_ERR,"ERROR:cpl-c:do_script_download: cannot build hdr lump\n");
cpl_err = &intern_err;
goto error;
}
if (script.s!=0) {
/*DBG("script len=%d\n--------\n%.*s\n--------\n",
script.len, script.len, script.s);*/
/* user has a script -> add a body lump */
if ( add_lump_rpl( msg, script.s, script.len, LUMP_RPL_BODY)==0) {
LOG(L_ERR,"ERROR:cpl-c:do_script_download: cannot build "
"body lump\n");
cpl_err = &intern_err;
goto error;
}
/* build_lump_rpl duplicates the added text, so free the original */
shm_free( script.s );
}
return 0;
error:
if (script.s)
shm_free(script.s);
return -1;
}
static int w_process_register(struct sip_msg* msg, char* str, char* str2)
{
return cpl_process_register( msg, 0);
}
static int w_process_register_norpl(struct sip_msg* msg, char* str,char* str2)
{
return cpl_process_register( msg, 1);
}
static int cpl_process_register(struct sip_msg* msg, int no_rpl)
{
struct disposition *disp;
struct disposition_param *param;
int ret;
int mime;
int *mimes;
/* make sure that is a REGISTER ??? */
/* here should be the CONTACT- hack */
/* is there a CONTENT-TYPE hdr ? */
mime = parse_content_type_hdr( msg );
if (mime==-1)
goto error;
/* check the mime type */
DBG("DEBUG:cpl_process_register: Content-Type mime found %u, %u\n",
mime>>16,mime&0x00ff);
if ( mime && mime==(TYPE_APPLICATION<<16)+SUBTYPE_CPLXML ) {
/* can be an upload or remove -> check for the content-purpose and
* content-action headers */
DBG("DEBUG:cpl_process_register: carrying CPL -> look at "
"Content-Disposition\n");
if (parse_content_disposition( msg )!=0) {
LOG(L_ERR,"ERROR:cpl_process_register: Content-Disposition missing "
"or corrupted\n");
goto error;
}
disp = get_content_disposition(msg);
print_disposition( disp ); /* just for DEBUG */
/* check if the type of disposition is SCRIPT */
if (disp->type.len!=CPL_SCRIPT_LEN ||
strncasecmp(disp->type.s,CPL_SCRIPT,CPL_SCRIPT_LEN) ) {
LOG(L_ERR,"ERROR:cpl_process_register: bogus message - Content-Type"
"says CPL_SCRIPT, but Content-Disposition something else\n");
goto error;
}
/* disposition type is OK -> look for action parameter */
for(param=disp->params;param;param=param->next) {
if (param->name.len==ACTION_PARAM_LEN &&
!strncasecmp(param->name.s,ACTION_PARAM,ACTION_PARAM_LEN))
break;
}
if (param==0) {
LOG(L_ERR,"ERROR:cpl_process_register: bogus message - "
"Content-Disposition has no action param\n");
goto error;
}
/* action param found -> check its value: store or remove */
if (param->body.len==STORE_ACTION_LEN &&
!strncasecmp( param->body.s, STORE_ACTION, STORE_ACTION_LEN)) {
/* it's a store action -> get the script from body message and store
* it into database (CPL and BINARY format) */
if (do_script_action( msg, STORE_SCRIPT)==-1)
goto error;
} else
if (param->body.len==REMOVE_ACTION_LEN &&
!strncasecmp( param->body.s, REMOVE_ACTION, REMOVE_ACTION_LEN)) {
/* it's a remove action -> remove the script from database */
if (do_script_action( msg, REMOVE_SCRIPT)==-1)
goto error;
} else {
LOG(L_ERR,"ERROR:cpl_process_register: unknown action <%.*s>\n",
param->body.len,param->body.s);
goto error;
}
/* do I have to send to reply? */
if (no_rpl)
goto resume_script;
/* send a 200 OK reply back */
cpl_fct.slb.zreply( msg, 200, "OK");
/* I send the reply and I don't want to return to script execution, so
* I return 0 to do break */
goto stop_script;
}
/* is there an ACCEPT hdr ? */
if ( (ret=parse_accept_hdr(msg))==-1)
goto error;
if (ret==0 || (mimes=get_accept(msg))==0 )
/* accept header not present or no mimes found */
goto resume_script;
/* looks if the REGISTER accepts cpl-xml or * */
while (*mimes) {
DBG("DEBUG: accept mime found %u, %u\n",
(*mimes)>>16,(*mimes)&0x00ff);
if (*mimes==(TYPE_ALL<<16)+SUBTYPE_ALL ||
*mimes==(TYPE_APPLICATION<<16)+SUBTYPE_CPLXML )
break;
mimes++;
}
if (*mimes==0)
/* no accept mime that matched cpl */
goto resume_script;
/* get the user name from msg, retrieve the script from db
* and appended to reply */
if (do_script_download( msg )==-1)
goto error;
/* do I have to send to reply? */
if (no_rpl)
goto resume_script;
/* send a 200 OK reply back */
cpl_fct.slb.zreply( msg, 200, "OK");
stop_script:
return 0;
resume_script:
return 1;
error:
/* send a error reply back */
cpl_fct.slb.zreply( msg, cpl_err->err_code, cpl_err->err_msg);
/* I don't want to return to script execution, so I return 0 to do break */
return 0;
}
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