sipwise
/
kamailio
mirror of https://github.com/sipwise/kamailio.git
1
0
Fork 0
Code Issues Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'ee6afa19d3'
${ noResults }
kamailio/modules/tm/t_fifo.c

1002 lines
25 KiB
Raw Blame History

/*
* $Id$
*
* transaction maintenance functions
*
* 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:
* -------
* 2004-02-23 created by splitting it from t_funcs (bogdan)
* 2004-11-15 t_write_xxx can print whatever avp/hdr
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/uio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/un.h>
#include <ctype.h>
#include <string.h>
#include "../../str.h"
#include "../../ut.h"
#include "../../dprint.h"
#include "../../mem/mem.h"
#include "../../usr_avp.h"
#include "../../parser/parser_f.h"
#include "../../parser/parse_from.h"
#include "../../parser/parse_rr.h"
#include "../../parser/parse_nameaddr.h"
#include "../../parser/parse_hname2.h"
#include "../../parser/contact/parse_contact.h"
#include "../../tsend.h"
#include "config.h"
#include "t_lookup.h"
#include "t_fwd.h"
#include "t_funcs.h"
#include "t_fifo.h"
/* AF_LOCAL is not defined on solaris */
#if !defined(AF_LOCAL)
#define AF_LOCAL AF_UNIX
#endif
#if !defined(PF_LOCAL)
#define PF_LOCAL PF_UNIX
#endif
/* solaris doesn't have SUN_LEN */
#ifndef SUN_LEN
#define SUN_LEN(sa) ( strlen((sa)->sun_path) + \
(size_t)(((struct sockaddr_un*)0)->sun_path) )
#endif
#define TWRITE_PARAMS 20
#define TWRITE_VERSION_S "0.3"
#define TWRITE_VERSION_LEN (sizeof(TWRITE_VERSION_S)-1)
#define eol_line_s(_i_) ( iov_lines_eol[2*(_i_)].iov_base )
#define eol_line_len(_i_) ( iov_lines_eol[2*(_i_)].iov_len )
#define eol_line(_i_,_s_) { eol_line_s(_i_) = (_s_).s; \
eol_line_len(_i_) = (_s_).len; }
#define IDBUF_LEN 128
#define ROUTE_BUFFER_MAX 512
#define APPEND_BUFFER_MAX 4096
#define CMD_BUFFER_MAX 128
#define copy_route(s,len,rs,rlen) \
do {\
if(rlen+len+3 >= ROUTE_BUFFER_MAX){\
LOG(L_ERR,"vm: buffer overflow while copying new route\n");\
goto error;\
}\
if(len){\
append_chr(s,','); len++;\
}\
append_chr(s,'<');len++;\
append_str(s,rs,rlen);\
len += rlen; \
append_chr(s,'>');len++;\
} while(0)
static struct iovec iov_lines_eol[2*TWRITE_PARAMS];
static struct iovec eol={"\n",1};
static int sock;
struct hdr_avp {
str title;
int type;
str sval;
int ival;
struct hdr_avp *next;
};
struct tw_append {
str name;
int add_body;
struct hdr_avp *elems;
struct tw_append *next;
};
struct tw_info {
str action;
struct tw_append *append;
};
#define ELEM_TYPE_AVP "avp"
#define ELEM_TYPE_AVP_LEN (sizeof(ELEM_TYPE_AVP)-1)
#define ELEM_TYPE_HDR "hdr"
#define ELEM_TYPE_HDR_LEN (sizeof(ELEM_TYPE_HDR)-1)
#define ELEM_TYPE_MSG "msg"
#define ELEM_TYPE_MSG_LEN (sizeof(ELEM_TYPE_MSG)-1)
#define ELEM_IS_AVP (1<<0)
#define ELEM_IS_HDR (1<<1)
#define ELEM_IS_MSG (1<<2)
#define ELEM_VAL_BODY "body"
#define ELEM_VAL_BODY_LEN (sizeof(ELEM_VAL_BODY)-1)
static struct tw_append *tw_appends;
static void print_tw_append( struct tw_append *append)
{
struct hdr_avp *ha;
if (!append)
return;
DBG("DEBUG:tm:print_tw_append: tw_append name=<%.*s>\n",
append->name.len,append->name.s);
for( ha=append->elems ; ha ; ha=ha->next ) {
DBG("\ttitle=<%.*s>\n",ha->title.len,ha->title.s);
DBG("\t\tttype=<%d>\n",ha->type);
DBG("\t\tsval=<%.*s>\n",ha->sval.len,ha->sval.s);
DBG("\t\tival=<%d>\n",ha->ival);
}
}
/* tw_append syntax:
* tw_append = name:element[;element]
* element = [title=]value
* value = avp[avp_spec] | hdr[hdr_name] | msg[body] */
int parse_tw_append( modparam_t type, void* val)
{
struct hdr_field hdr;
struct hdr_avp *last;
struct hdr_avp *ha;
struct tw_append *app;
int_str avp_name;
char *s;
char bar;
str foo;
int n;
int index;
if (val==0 || ((char*)val)[0]==0)
return 0;
s = (char*)val;
/* start parsing - first the name */
while( *s && isspace((int)*s) ) s++;
if ( !*s || *s==':')
goto parse_error;
foo.s = s;
while ( *s && *s!=':' && !isspace((int)*s) ) s++;
if ( !*s || foo.s==s )
goto parse_error;
foo.len = s - foo.s;
/* parse separator */
while( *s && isspace((int)*s) ) s++;
if ( !*s || *s!=':')
goto parse_error;
s++;
while( *s && isspace((int)*s) ) s++;
if ( !*s )
goto parse_error;
/* check for name duplication */
for(app=tw_appends;app;app=app->next)
if (app->name.len==foo.len && !strncasecmp(app->name.s,foo.s,foo.len)){
LOG(L_ERR,"ERROR:tm:parse_tw_append: duplicated tw_append name "
"<%.*s>\n",foo.len,foo.s);
goto error;
}
/* new tw_append structure */
app = (struct tw_append*)pkg_malloc( sizeof(struct tw_append) );
if (app==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg memory\n");
goto error;
}
app->name.s = (char*)pkg_malloc( foo.len+1 );
if (app->name.s==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg memory\n");
goto error;
}
memcpy( app->name.s, foo.s, foo.len);
app->name.len = foo.len;
app->name.s[app->name.len] = 0;
last = app->elems = 0;
app->next = tw_appends;
tw_appends = app;
/* parse the elements */
while (*s) {
/* parse element title or element type */
foo.s = s;
while( *s && *s!='[' && *s!='=' && *s!=';' && !isspace((int)*s) ) s++;
if ( !*s || foo.s==s)
goto parse_error;
foo.len = s - foo.s;
/* new hdr_avp structure */
ha = (struct hdr_avp*)pkg_malloc( sizeof(struct hdr_avp) );
if (ha==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg memory\n");
goto error;
}
memset( ha, 0, sizeof(struct hdr_avp));
if (*s!='[') {
/* foo must by title or some error -> parse separator */
while( *s && isspace((int)*s) ) s++;
if ( !*s || *s!='=')
goto parse_error;
s++;
while( *s && isspace((int)*s) ) s++;
if ( !*s )
goto parse_error;
/* set the title */
ha->title.s = (char*)pkg_malloc( foo.len+1 );
if (ha->title.s==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg memory\n");
goto error;
}
memcpy( ha->title.s, foo.s, foo.len);
ha->title.len = foo.len;
ha->title.s[ha->title.len] = 0;
/* parse the type now */
foo.s = s;
while( *s && *s!='[' && *s!=']' && *s!=';' && !isspace((int)*s) )
s++;
if ( *s!='[' || foo.s==s)
goto parse_error;
foo.len = s - foo.s;
}
/* foo containes the elemet type */
if ( foo.len==ELEM_TYPE_AVP_LEN &&
!strncasecmp( foo.s, ELEM_TYPE_AVP, foo.len) ) {
ha->type = ELEM_IS_AVP;
} else if ( foo.len==ELEM_TYPE_HDR_LEN &&
!strncasecmp( foo.s, ELEM_TYPE_HDR, foo.len) ) {
ha->type = ELEM_IS_HDR;
} else if ( foo.len==ELEM_TYPE_MSG_LEN &&
!strncasecmp( foo.s, ELEM_TYPE_MSG, foo.len) ) {
ha->type = ELEM_IS_MSG;
} else {
LOG(L_ERR,"ERROR:tm:parse_tw_append: unknown type <%.*s>\n",
foo.len, foo.s);
goto error;
}
/* parse the element name */
s++;
foo.s = s;
while( *s && *s!=']' && *s!=';' && !isspace((int)*s) ) s++;
if ( *s!=']' || foo.s==s )
goto parse_error;
foo.len = s - foo.s;
s++;
/* process and optimize the element name */
if (ha->type==ELEM_IS_AVP) {
/* element is AVP */
if ( parse_avp_spec( &foo, &n, &avp_name, &index)!=0 ) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: bad alias spec "
"<%.*s>\n",foo.len, foo.s);
goto error;
}
if (n&AVP_NAME_STR) {
/* string name */
ha->sval.s = (char*)pkg_malloc(avp_name.s.len+1);
if (ha->sval.s==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg mem\n");
goto error;
}
memcpy( ha->sval.s, avp_name.s.s, avp_name.s.len);
ha->sval.len = avp_name.s.len;
ha->sval.s[ha->sval.len] = 0;
if (ha->title.s==0)
ha->title = ha->sval;
} else {
/* ID name - if title is missing, convert the ID to
* string and us it a title */
ha->ival = avp_name.n;
if (ha->title.s==0) {
foo.s=int2str((unsigned long)ha->ival, &foo.len);
ha->title.s = (char*)pkg_malloc( n+1 );
if (ha->title.s==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg "
"memory\n");
goto error;
}
memcpy( ha->title.s, foo.s, foo.len);
ha->title.len = foo.len;
ha->title.s[ha->title.len] = 0;
}
}
} else if (ha->type==ELEM_IS_HDR) {
/* element is HDR - try to get it's coded type if defined */
bar = foo.s[foo.len];
foo.s[foo.len] = ':';
/* parse header name */
if (parse_hname2( foo.s, foo.s+foo.len+1, &hdr)==0) {
LOG(L_ERR,"BUG:tm_parse_tw_append: parse header failed\n");
goto error;
}
foo.s[foo.len] = bar;
ha->ival = hdr.type;
if (hdr.type==HDR_OTHER_T || ha->title.s==0) {
/* duplicate hdr name */
ha->sval.s = (char*)pkg_malloc(foo.len+1);
if (ha->sval.s==0) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: no more pkg mem\n");
goto error;
}
memcpy( ha->sval.s, foo.s, foo.len);
ha->sval.len = foo.len;
ha->sval.s[ha->sval.len] = 0;
if (ha->title.s==0)
ha->title = ha->sval;
}
} else {
/* element is MSG */
if ( !(foo.len==ELEM_VAL_BODY_LEN &&
!strncasecmp(ELEM_VAL_BODY,foo.s,foo.len)) ) {
LOG(L_ERR,"ERROR:tm:parse_tw_append: unsupported value <%.*s>"
" for msg type\n",foo.len,foo.s);
goto error;
}
app->add_body = 1;
pkg_free( ha );
ha = 0;
}
/* parse the element separator, if present */
while( *s && isspace((int)*s) ) s++;
if ( *s && *s!=';')
goto parse_error;
if (*s==';') {
s++;
while( *s && isspace((int)*s) ) s++;
if (!*s)
goto parse_error;
}
/* link the element to tw_append structure */
if (ha) {
if (last==0) {
last = app->elems = ha;
} else {
last->next = ha;
last = ha;
}
}
} /* end while */
print_tw_append( app );
/* free the old string */
pkg_free(val);
return 0;
parse_error:
LOG(L_ERR,"ERROR:tm:parse_tw_append: parse error in <%s> around "
"position %ld\n", (char*)val, (long)(s-(char*)val));
error:
return -1;
}
static struct tw_append *search_tw_append(char *name, int len)
{
struct tw_append * app;
for( app=tw_appends ; app ; app=app->next )
if (app->name.len==len && !strncasecmp(app->name.s,name,len) )
return app;
return 0;
}
int fixup_t_write( void** param, int param_no)
{
struct tw_info *twi;
char *s;
if (param_no==2) {
twi = (struct tw_info*)pkg_malloc( sizeof(struct tw_info) );
if (twi==0) {
LOG(L_ERR,"ERROR:tm:fixup_t_write: no more pkg memory\n");
return E_OUT_OF_MEM;
}
memset( twi, 0 , sizeof(struct tw_info));
s = (char*)*param;
twi->action.s = s;
if ( (s=strchr(s,'/'))!=0) {
twi->action.len = s - twi->action.s;
if (twi->action.len==0) {
LOG(L_ERR,"ERROR:tm:fixup_t_write: empty action name\n");
return E_CFG;
}
s++;
if (*s==0) {
LOG(L_ERR,"ERROR:tm:fixup_t_write: empty append name\n");
return E_CFG;
}
twi->append = search_tw_append( s, strlen(s));
if (twi->append==0) {
LOG(L_ERR,"ERROR:tm:fixup_t_write: unknown append name "
"<%s>\n",s);
return E_CFG;
}
} else {
twi->action.len = strlen(twi->action.s);
}
*param=(void*)twi;
}
return 0;
}
int init_twrite_sock(void)
{
int flags;
sock = socket(PF_LOCAL, SOCK_DGRAM, 0);
if (sock == -1) {
LOG(L_ERR, "init_twrite_sock: Unable to create socket: %s\n", strerror(errno));
return -1;
}
/* Turn non-blocking mode on */
flags = fcntl(sock, F_GETFL);
if (flags == -1){
LOG(L_ERR, "init_twrite_sock: fcntl failed: %s\n",
strerror(errno));
close(sock);
return -1;
}
if (fcntl(sock, F_SETFL, flags | O_NONBLOCK) == -1) {
LOG(L_ERR, "init_twrite_sock: fcntl: set non-blocking failed:"
" %s\n", strerror(errno));
close(sock);
return -1;
}
return 0;
}
int init_twrite_lines()
{
int i;
/* init the line table */
for(i=0;i<TWRITE_PARAMS;i++) {
iov_lines_eol[2*i].iov_base = 0;
iov_lines_eol[2*i].iov_len = 0;
iov_lines_eol[2*i+1] = eol;
}
/* first line is the version - fill it now */
eol_line_s(0) = TWRITE_VERSION_S;
eol_line_len(0) = TWRITE_VERSION_LEN;
return 0;
}
static int inline write_to_fifo(char *fifo, int cnt )
{
int fd_fifo;
/* open FIFO file stream */
if((fd_fifo = open(fifo,O_WRONLY | O_NONBLOCK)) == -1){
switch(errno){
case ENXIO:
LOG(L_ERR,"ERROR:tm:write_to_fifo: nobody listening on "
" [%s] fifo for reading!\n",fifo);
default:
LOG(L_ERR,"ERROR:tm:write_to_fifo: failed to open [%s] "
"fifo : %s\n", fifo, strerror(errno));
}
goto error;
}
/* write now (unbuffered straight-down write) */
repeat:
if (writev(fd_fifo, iov_lines_eol, 2*cnt)<0) {
if (errno!=EINTR) {
LOG(L_ERR, "ERROR:tm:write_to_fifo: writev failed: %s\n",
strerror(errno));
close(fd_fifo);
goto error;
} else {
goto repeat;
}
}
close(fd_fifo);
DBG("DEBUG:tm:write_to_fifo: write completed\n");
return 1; /* OK */
error:
return -1;
}
static inline char* add2buf(char *buf, char *end, char *title, int title_len,
char *value , int value_len)
{
if (buf+title_len+value_len+2+1>=end)
return 0;
memcpy( buf, title, title_len);
buf += title_len;
*(buf++) = ':';
*(buf++) = ' ';
memcpy( buf, value, value_len);
buf += value_len;
*(buf++) = '\n';
return buf;
}
static inline char* append2buf( char *buf, int len, struct sip_msg *req,
struct hdr_avp *ha)
{
struct hdr_field *hdr;
struct usr_avp *avp;
int_str avp_val;
int_str avp_name;
char *end;
str foo;
int msg_parsed;
end = buf+len;
msg_parsed = 0;
while(ha) {
if (ha->type==ELEM_IS_AVP) {
/* search for the AVP */
if (ha->sval.s) {
avp_name.s=ha->sval;
avp = search_first_avp( AVP_NAME_STR, avp_name, &avp_val, 0);
DBG("AVP <%.*s>: %p\n",avp_name.s.len, avp_name.s.s, avp);
} else {
avp_name.n=ha->ival;
avp = search_first_avp( 0, avp_name, &avp_val, 0);
DBG("AVP <%i>: %p\n",avp_name.n,avp);
}
if (avp) {
if (avp->flags&AVP_VAL_STR) {
buf=add2buf( buf, end, ha->title.s, ha->title.len,
avp_val.s.s , avp_val.s.len);
if (!buf)
goto overflow_err;
} else {
foo.s=int2str( (unsigned long)avp_val.n, &foo.len);
buf=add2buf( buf, end, ha->title.s, ha->title.len,
foo.s , foo.len);
if (!buf)
goto overflow_err;
}
}
} else if (ha->type==ELEM_IS_HDR) {
/* parse the HDRs */
if (!msg_parsed) {
if (parse_headers( req, HDR_EOH_F, 0)!=0) {
LOG(L_ERR,"ERROR:tm:append2buf: parsing hdrs failed\n");
goto error;
}
msg_parsed = 1;
}
/* search the HDR */
if (ha->ival==HDR_OTHER_T) {
for(hdr=req->headers;hdr;hdr=hdr->next)
if (ha->sval.len==hdr->name.len &&
strncasecmp( ha->sval.s, hdr->name.s, hdr->name.len)==0)
break;
} else {
for(hdr=req->headers;hdr;hdr=hdr->next)
if (ha->ival==hdr->type)
break;
}
if (hdr) {
trim_len( foo.len, foo.s, hdr->body);
buf=add2buf( buf, end, ha->title.s, ha->title.len,
foo.s , foo.len);
if (!buf)
goto overflow_err;
}
} else {
LOG(L_ERR,"BUG:tm:append2buf: unknown element type %d\n",
ha->type);
goto error;
}
ha = ha->next;
}
return buf;
overflow_err:
LOG(L_ERR,"ERROR:tm:append2buf: overflow -> append exceeded %d len\n",len);
error:
return 0;
}
static int assemble_msg(struct sip_msg* msg, struct tw_info *twi)
{
static char id_buf[IDBUF_LEN];
static char route_buffer[ROUTE_BUFFER_MAX];
static char append_buf[APPEND_BUFFER_MAX];
static char cmd_buf[CMD_BUFFER_MAX];
static str empty_param = STR_STATIC_INIT(".");
unsigned int hash_index, label;
contact_body_t* cb=0;
contact_t* c=0;
name_addr_t na;
rr_t* record_route;
struct hdr_field* p_hdr;
param_hooks_t hooks;
int l;
char* s, fproxy_lr;
int first_rr;
str route, next_hop, append, tmp_s, body, str_uri;
if(msg->first_line.type != SIP_REQUEST){
LOG(L_ERR,"assemble_msg: called for something else then"
"a SIP request\n");
goto error;
}
/* parse all -- we will need every header field for a UAS */
if ( parse_headers(msg, HDR_EOH_F, 0)==-1) {
LOG(L_ERR,"assemble_msg: parse_headers failed\n");
goto error;
}
/* find index and hash; (the transaction can be safely used due
* to refcounting till script completes) */
if( t_get_trans_ident(msg,&hash_index,&label) == -1 ) {
LOG(L_ERR,"assemble_msg: t_get_trans_ident failed\n");
goto error;
}
/* parse from header */
if (msg->from==0 || (msg->from->parsed==0 && parse_from_header(msg)==-1)) {
LOG(L_ERR,"assemble_msg: while parsing <From:> header\n");
goto error;
}
/* parse the RURI (doesn't make any malloc) */
msg->parsed_uri_ok = 0; /* force parsing */
if (parse_sip_msg_uri(msg)<0) {
LOG(L_ERR,"assemble_msg: uri has not been parsed\n");
goto error;
}
/* parse contact header */
str_uri.s = 0;
str_uri.len = 0;
if(msg->contact) {
if (msg->contact->parsed==0 && parse_contact(msg->contact)==-1) {
LOG(L_ERR,"assemble_msg: error while parsing "
"<Contact:> header\n");
goto error;
}
cb = (contact_body_t*)msg->contact->parsed;
if(cb && (c=cb->contacts)) {
str_uri = c->uri;
if (find_not_quoted(&str_uri,'<')) {
parse_nameaddr(&str_uri,&na);
str_uri = na.uri;
}
}
}
/* str_uri is taken from caller's contact or from header
* for backwards compatibility with pre-3261 (from is already parsed)*/
if(!str_uri.len || !str_uri.s)
str_uri = get_from(msg)->uri;
/* parse Record-Route headers */
route.s = s = route_buffer; route.len = 0;
fproxy_lr = 0;
next_hop = empty_param;
p_hdr = msg->record_route;
if(p_hdr) {
if (p_hdr->parsed==0 && parse_rr(p_hdr)!=0 ) {
LOG(L_ERR,"assemble_msg: while parsing "
"'Record-Route:' header\n");
goto error;
}
record_route = (rr_t*)p_hdr->parsed;
} else {
record_route = 0;
}
first_rr = 1;
if( record_route ) {
if ( (tmp_s.s=find_not_quoted(&record_route->nameaddr.uri,';'))!=0 &&
tmp_s.s+1!=record_route->nameaddr.uri.s+
record_route->nameaddr.uri.len) {
/* Parse all parameters */
tmp_s.len = record_route->nameaddr.uri.len - (tmp_s.s-
record_route->nameaddr.uri.s);
if (parse_params( &tmp_s, CLASS_URI, &hooks,
&record_route->params) < 0) {
LOG(L_ERR,"assemble_msg: error while parsing "
"record route uri params\n");
goto error;
}
fproxy_lr = (hooks.uri.lr != 0);
DBG("assemble_msg: record_route->nameaddr.uri: %.*s\n",
record_route->nameaddr.uri.len,record_route->nameaddr.uri.s);
if(fproxy_lr){
first_rr = 0;
DBG("assemble_msg: first proxy has loose routing.\n");
copy_route(s,route.len,record_route->nameaddr.uri.s,
record_route->nameaddr.uri.len);
}
}
for(;p_hdr;p_hdr = p_hdr->next) {
/* filter out non-RR hdr and empty hdrs */
if( (p_hdr->type!=HDR_RECORDROUTE_T) || p_hdr->body.len==0)
continue;
if(p_hdr->parsed==0 && parse_rr(p_hdr)!=0 ){
LOG(L_ERR,"assemble_msg: "
"while parsing <Record-route:> header\n");
goto error;
}
for(record_route=p_hdr->parsed; record_route;
record_route=record_route->next){
DBG("assemble_msg: record_route->nameaddr.uri: "
"<%.*s>\n", record_route->nameaddr.uri.len,
record_route->nameaddr.uri.s);
if (!first_rr) {
copy_route(s,route.len,record_route->nameaddr.uri.s,
record_route->nameaddr.uri.len);
}
first_rr=0;
}
}
if(!fproxy_lr){
copy_route(s,route.len,str_uri.s,str_uri.len);
str_uri = ((rr_t*)msg->record_route->parsed)->nameaddr.uri;
} else {
next_hop = ((rr_t*)msg->record_route->parsed)->nameaddr.uri;
}
}
DBG("assemble_msg: calculated route: %.*s\n",
route.len,route.len ? route.s : "");
DBG("assemble_msg: next r-uri: %.*s\n",
str_uri.len,str_uri.len ? str_uri.s : "");
if ( REQ_LINE(msg).method_value==METHOD_INVITE ||
REQ_LINE(msg).method_value==METHOD_INFO ||
(twi->append && twi->append->add_body) ) {
/* get body */
if( (body.s = get_body(msg)) == 0 ){
LOG(L_ERR, "assemble_msg: get_body failed\n");
goto error;
}
body.len = msg->len - (body.s - msg->buf);
} else {
body = empty_param;
}
/* additional headers */
append.s = s = append_buf;
if (sizeof(flag_t)*2+12+1 >= APPEND_BUFFER_MAX) {
LOG(L_ERR,"assemble_msg: buffer overflow "
"while copying optional header\n");
goto error;
}
append_str(s,"P-MsgFlags: ",12);
l = APPEND_BUFFER_MAX - (12+1); /* include trailing `\n'*/
if (int2reverse_hex(&s, &l, (int)msg->msg_flags) == -1) {
LOG(L_ERR,"assemble_msg: buffer overflow "
"while copying optional header\n");
goto error;
}
append_chr(s,'\n');
if ( twi->append && ((s=append2buf( s, APPEND_BUFFER_MAX-(s-append.s), msg,
twi->append->elems))==0) )
goto error;
/* body separator */
append_chr(s,'.');
append.len = s-append.s;
eol_line_s(1) = s = cmd_buf;
if(twi->action.len+12 >= CMD_BUFFER_MAX){
LOG(L_ERR,"assemble_msg: buffer overflow while "
"copying command name\n");
goto error;
}
append_str(s,"sip_request.",12);
append_str(s,twi->action.s, twi->action.len);
eol_line_len(1) = s - (char*)eol_line_s(1);
eol_line(2,REQ_LINE(msg).method); /* method type */
eol_line(3,msg->parsed_uri.user); /* user from r-uri */
eol_line(4,msg->parsed_uri.host); /* domain */
eol_line(5,msg->rcv.bind_address->address_str); /* dst ip */
eol_line(6,msg->rcv.dst_port==SIP_PORT ?
empty_param : msg->rcv.bind_address->port_no_str); /* port */
/* r_uri ('Contact:' for next requests) */
eol_line(7,msg->first_line.u.request.uri);
/* r_uri for subsequent requests */
eol_line(8,str_uri.len?str_uri:empty_param);
eol_line(9,get_from(msg)->body); /* from */
eol_line(10,msg->to->body); /* to */
eol_line(11,msg->callid->body); /* callid */
eol_line(12,get_from(msg)->tag_value); /* from tag */
eol_line(13,get_to(msg)->tag_value); /* to tag */
eol_line(14,get_cseq(msg)->number); /* cseq number */
eol_line_s(15)=id_buf; /* hash:label */
s = int2str(hash_index, &l);
if (l+1>=IDBUF_LEN) {
LOG(L_ERR, "assemble_msg: too big hash\n");
goto error;
}
memcpy(id_buf, s, l);
id_buf[l]=':';
eol_line_len(15)=l+1;
s = int2str(label, &l);
if (l+1+eol_line_len(15)>=IDBUF_LEN) {
LOG(L_ERR, "assemble_msg: too big label\n");
goto error;
}
memcpy(id_buf+eol_line_len(15), s, l);
eol_line_len(15) += l;
eol_line(16, route.len ? route : empty_param );
eol_line(17, next_hop );
eol_line(18, append );
eol_line(19, body );
/* success */
return 1;
error:
/* 0 would lead to immediate script exit -- -1 returns
* with 'false' to script processing */
return -1;
}
static int write_to_unixsock(char* sockname, int cnt)
{
int len, e;
struct sockaddr_un dest;
if (!sockname) {
LOG(L_ERR, "write_to_unixsock: Invalid parameter\n");
return E_UNSPEC;
}
len = strlen(sockname);
if (len == 0) {
DBG("write_to_unixsock: Error - empty socket name\n");
return -1;
} else if (len > 107) {
LOG(L_ERR, "write_to_unixsock: Socket name too long\n");
return -1;
}
memset(&dest, 0, sizeof(dest));
dest.sun_family = PF_LOCAL;
memcpy(dest.sun_path, sockname, len);
#ifdef HAVE_SOCKADDR_SA_LEN
dest.sun_len = len;
#endif
e = connect(sock, (struct sockaddr*)&dest, SUN_LEN(&dest));
#ifdef HAVE_CONNECT_ECONNRESET_BUG
/*
* Workaround for a nasty bug in BSD kernels dated back
* to the Berkeley days, so that can be found in many modern
* BSD-derived kernels. Workaround should be pretty harmless since
* in normal conditions connect(2) can never return ECONNRESET.
*/
if ((e == -1) && (errno == ECONNRESET))
e = 0;
#endif
if (e == -1) {
LOG(L_ERR, "write_to_unixsock: Error in connect: %s\n", strerror(errno));
return -1;
}
if (tsend_dgram_ev(sock, iov_lines_eol, 2 * cnt,
cfg_get(tm, tm_cfg, tm_unix_tx_timeout)) < 0) {
LOG(L_ERR, "write_to_unixsock: writev failed: %s\n", strerror(errno));
return -1;
}
return 0;
}
int t_write_req(struct sip_msg* msg, char* vm_fifo, char* info)
{
if (assemble_msg(msg, (struct tw_info*)info) < 0) {
LOG(L_ERR, "ERROR:tm:t_write_req: Error int assemble_msg\n");
return -1;
}
if (write_to_fifo(vm_fifo, TWRITE_PARAMS) == -1) {
LOG(L_ERR, "ERROR:tm:t_write_req: write_to_fifo failed\n");
return -1;
}
/* make sure that if voicemail does not initiate a reply
* timely, a SIP timeout will be sent out */
if (add_blind_uac() == -1) {
LOG(L_ERR, "ERROR:tm:t_write_req: add_blind failed\n");
return -1;
}
return 1;
}
int t_write_unix(struct sip_msg* msg, char* socket, char* info)
{
if (assemble_msg(msg, (struct tw_info*)info) < 0) {
LOG(L_ERR, "ERROR:tm:t_write_unix: Error in assemble_msg\n");
return -1;
}
if (write_to_unixsock(socket, TWRITE_PARAMS) == -1) {
LOG(L_ERR, "ERROR:tm:t_write_unix: write_to_unixsock failed\n");
return -1;
}
/* make sure that if voicemail does not initiate a reply
* timely, a SIP timeout will be sent out */
if (add_blind_uac() == -1) {
LOG(L_ERR, "ERROR:tm:t_write_unix: add_blind failed\n");
return -1;
}
return 1;
}
Reference in new issue View Git Blame Copy Permalink