/**
* Creates a new s_dialog structure.
* Does not add the structure to the list
* @param call_id - call_id of the dialog
* @param aor - aor of the user
* @param dir - the direction
* @returns the new s_dialog* or NULL s_dialog
*/
s_dialog* new_s_dialog(str call_id,str aor, enum s_dialog_direction dir)
{
s_dialog *d;
if (!s_dialog_count_increment()) return 0;
d = shm_malloc(sizeof(s_dialog));
if (!d) {
LOG(L_ERR,"ERR:"M_NAME":new_s_dialog(): Unable to alloc %d bytes\n",
sizeof(s_dialog));
goto error;
}
memset(d,0,sizeof(s_dialog));
d->hash = get_s_dialog_hash(call_id);
STR_SHM_DUP(d->call_id,call_id,"shm");
STR_SHM_DUP(d->aor,aor,"shm");
d->direction = dir;
d->is_releasing = 0;
return d;
error:
out_of_memory:
if (d){
shm_free(d);
}
s_dialog_count_decrement();
return 0;
}
/**
* Decode a dialog userdata from a binary data structure
* @param x - binary data to decode from
* @returns the s_dialog* where the data has been decoded
*/
s_dialog* bin_decode_s_dialog(bin_data *x)
{
s_dialog *d=0;
int len;
str s;
char ch;
len = sizeof(s_dialog);
d = (s_dialog*) shm_malloc(len);
if (!d) {
LOG(L_ERR,"ERR:"M_NAME":bin_decode_s_dialog: Error allocating %d bytes.\n",len);
goto error;
}
memset(d,0,len);
if (!bin_decode_str(x,&s)||!str_shm_dup(&(d->call_id),&s)) goto error;
if (!bin_decode_char(x, &ch)) goto error;
d->direction = ch;
if (!bin_decode_str(x,&s)||!str_shm_dup(&(d->aor),&s)) goto error;
if (!bin_decode_char(x, &ch)) goto error;
d->method = ch;
if (!bin_decode_str(x,&s)||!str_shm_dup(&(d->method_str),&s)) goto error;
if (!bin_decode_int(x, &d->first_cseq)) goto error;
if (!bin_decode_int(x, &d->last_cseq)) goto error;
if (!bin_decode_char(x, &ch)) goto error;
d->state = ch;
if (!bin_decode_time_t(x, &d->expires)) goto error;
if (!bin_decode_time_t(x, &d->lr_session_expires)) goto error;
if (!bin_decode_str(x,&s)||!str_shm_dup(&(d->refresher),&s)) goto error;
if (!bin_decode_uchar(x,&d->uac_supp_timer)) goto error;
if (!bin_decode_uchar(x, &d->is_releasing)) goto error;
if (!bin_decode_dlg_t(x,&(d->dialog_c))) goto error;
if (!bin_decode_dlg_t(x,&(d->dialog_s))) goto error;
d->hash = get_s_dialog_hash(d->call_id);
return d;
error:
LOG(L_ERR,"ERR:"M_NAME":bin_decode_s_dialog: Error while decoding (at %d (%04x)).\n",x->max,x->max);
if (d) {
if (d->call_id.s) shm_free(d->call_id.s);
if (d->aor.s) shm_free(d->aor.s);
if (d->method_str.s) shm_free(d->method_str.s);
if (d->refresher.s) shm_free(d->refresher.s);
shm_free(d);
}
return 0;
}
/**
* Finds and returns a dialog from the hash table.
* \note the table should be locked already for the call_id in the parameter
* @param call_id - call_id of the dialog
* @param dir - the direction
* @returns the s_dialog* or NULL if not found
*/
s_dialog* get_s_dialog_dir_nolock(str call_id,enum s_dialog_direction dir)
{
s_dialog *d=0;
unsigned int hash = get_s_dialog_hash(call_id);
d = s_dialogs[hash].head;
while(d){
if (d->direction == dir &&
d->call_id.len == call_id.len &&
strncasecmp(d->call_id.s,call_id.s,call_id.len)==0) {
return d;
}
d = d->next;
}
return 0;
}
/**
* Finds and returns a dialog from the hash table.
* \note Locks the hash slot if ok! Call d_unlock(s_dialog->hash) when you are finished)
* @param call_id - call_id of the dialog
* @param aor - aor of the user
* @returns the s_dialog* or NULL if not found
*/
s_dialog* get_s_dialog(str call_id,str aor)
{
s_dialog *d=0;
unsigned int hash = get_s_dialog_hash(call_id);
d_lock(hash);
d = s_dialogs[hash].head;
while(d){
if (d->aor.len == aor.len &&
d->call_id.len == call_id.len &&
strncasecmp(d->aor.s,aor.s,aor.len)==0 &&
strncasecmp(d->call_id.s,call_id.s,call_id.len)==0) {
return d;
}
d = d->next;
}
d_unlock(hash);
return 0;
}
