int dlg_manage(sip_msg_t *msg)
{
str tag;
int backup_mode;
dlg_cell_t *dlg = NULL;
tm_cell_t *t = NULL;
if( (msg->to==NULL && parse_headers(msg, HDR_TO_F,0)<0) || msg->to==NULL )
{
LM_ERR("bad TO header\n");
return -1;
}
tag = get_to(msg)->tag_value;
if(tag.s!=0 && tag.len!=0)
{
backup_mode = seq_match_mode;
seq_match_mode = SEQ_MATCH_NO_ID;
dlg_onroute(msg, NULL, NULL);
seq_match_mode = backup_mode;
} else {
t = d_tmb.t_gett();
if(t==T_UNDEFINED)
t = NULL;
if(dlg_new_dialog(msg, t, initial_cbs_inscript)!=0)
return -1;
dlg = dlg_get_ctx_dialog();
if(dlg==NULL)
return -1;
if(t!=NULL)
dlg_set_tm_callbacks(t, msg, dlg, spiral_detected);
dlg_release(dlg);
}
return 1;
}
static int w_match_dialog(struct sip_msg *msg)
{
int backup,i,rr_param_len;
void *match_param = NULL;
struct sip_uri *r_uri;
/* dialog already found ? */
if (get_current_dialog()!=NULL)
return 1;
/* small trick to force SIP-wise matching */
backup = seq_match_mode;
seq_match_mode = SEQ_MATCH_FALLBACK;
/* See if we can force DID matching, for the case of topo
* hiding, where we have the DID as param of the contact */
if (parse_sip_msg_uri(msg)<0) {
LM_ERR("Failed to parse request URI\n");
goto sipwise;
}
if (parse_headers(msg, HDR_ROUTE_F, 0) == -1) {
LM_ERR("failed to parse route headers\n");
goto sipwise;
}
r_uri = &msg->parsed_uri;
rr_param_len = strlen(rr_param);
if (check_self(&r_uri->host,r_uri->port_no ? r_uri->port_no : SIP_PORT, 0) == 1 &&
msg->route == NULL) {
/* Seems we are in the topo hiding case :
* we are in the R-URI and there are no other route headers */
for (i=0;i<r_uri->u_params_no;i++)
if (r_uri->u_name[i].len == rr_param_len &&
memcmp(rr_param,r_uri->u_name[i].s,rr_param_len)==0) {
LM_DBG("We found DID param in R-URI with value of %.*s \n",
r_uri->u_val[i].len,r_uri->u_val[i].s);
/* pass the param value to the matching funcs */
match_param = (void *)(&r_uri->u_val[i]);
}
}
sipwise:
dlg_onroute( msg, NULL, match_param);
seq_match_mode = backup;
return (current_dlg_pointer==NULL)?-1:1;
}
static int w_match_dialog(struct sip_msg *msg)
{
int backup;
/* dialog already found ? */
if (get_current_dialog()!=NULL)
return 1;
/* small trick to force SIP-wise matching */
backup = seq_match_mode;
seq_match_mode = SEQ_MATCH_FALLBACK;
dlg_onroute( msg, NULL, NULL);
seq_match_mode = backup;
return (current_dlg_pointer==NULL)?-1:1;
}
