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/*
* Ouroboros - Copyright (C) 2016 - 2017
*
* Normal IPC Process - Authenticated CDAP Flow Allocator
*
* Sander Vrijders <sander.vrijders@ugent.be>
* Dimitri Staessens <dimitri.staessens@ugent.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define OUROBOROS_PREFIX "cdap-flow"
#include <ouroboros/config.h>
#include <ouroboros/dev.h>
#include <ouroboros/logs.h>
#include "cdap_flow.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
static void cdap_flow_destroy(struct cdap_flow * flow)
{
assert(flow);
if (flow->ci != NULL)
cdap_destroy(flow->ci);
free(flow);
}
struct cdap_flow * cdap_flow_arr(int fd,
int resp,
const struct conn_info * info)
{
struct cdap_flow * flow;
if (flow_alloc_resp(fd, resp) < 0) {
log_err("Could not respond to new flow.");
return NULL;
}
if (resp)
return NULL;
flow = malloc(sizeof(*flow));
if (flow == NULL) {
log_err("Failed to malloc.");
return NULL;
}
memset(&flow->info, 0, sizeof(flow->info));
flow->fd = fd;
flow->ci = NULL;
if (cacep_rcv(fd, &flow->info)) {
log_err("Error establishing application connection.");
cdap_flow_destroy(flow);
return NULL;
}
if (cacep_snd(fd, info)) {
log_err("Failed to respond to application connection request.");
cdap_flow_destroy(flow);
return NULL;
}
if (strcmp(flow->info.ae_name, info->ae_name)) {
log_err("Received connection for wrong AE.");
cdap_flow_destroy(flow);
return NULL;
}
if (strcmp(flow->info.protocol, info->protocol) ||
flow->info.pref_version != info->pref_version ||
flow->info.pref_syntax != info->pref_syntax) {
log_err("Unknown protocol.");
cdap_flow_destroy(flow);
return NULL;
}
flow->ci = cdap_create(fd);
if (flow->ci == NULL) {
log_err("Failed to create CDAP instance.");
cdap_flow_destroy(flow);
return NULL;
}
return flow;
}
struct cdap_flow * cdap_flow_alloc(const char * dst_name,
qosspec_t * qs,
const struct conn_info * info)
{
struct cdap_flow * flow;
int fd;
log_dbg("Allocating flow to %s.", dst_name);
if (dst_name == NULL) {
log_err("Not enough info to establish flow.");
return NULL;
}
fd = flow_alloc(dst_name, qs);
if (fd < 0) {
log_err("Failed to allocate flow to %s.", dst_name);
return NULL;
}
if (flow_alloc_res(fd)) {
log_err("Flow allocation to %s failed.", dst_name);
return NULL;
}
flow = malloc(sizeof(*flow));
if (flow == NULL) {
log_err("Failed to malloc.");
flow_dealloc(fd);
return NULL;
}
memset(&flow->info, 0, sizeof(flow->info));
flow->fd = fd;
flow->ci = NULL;
if (cacep_snd(fd, info)) {
log_err("Failed to send connection request.");
cdap_flow_dealloc(flow);
return NULL;
}
if (cacep_rcv(fd, &flow->info)) {
log_err("Failed to connect to application.");
cdap_flow_dealloc(flow);
return NULL;
}
if (strcmp(flow->info.ae_name, info->ae_name)) {
log_err("Received connection for wrong AE.");
cdap_flow_destroy(flow);
return NULL;
}
if (strcmp(flow->info.protocol, info->protocol) ||
flow->info.pref_version != info->pref_version ||
flow->info.pref_syntax != info->pref_syntax) {
log_err("Unknown protocol.");
cdap_flow_destroy(flow);
return NULL;
}
flow->ci = cdap_create(fd);
if (flow->ci == NULL) {
log_err("Failed to create CDAP instance.");
cdap_flow_dealloc(flow);
return NULL;
}
return flow;
}
void cdap_flow_dealloc(struct cdap_flow * flow)
{
int fd = flow->fd;
cdap_flow_destroy(flow);
flow_dealloc(fd);
}
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