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/*
Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program 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 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <time.h>
#include "iscsi.h"
#include "iscsi-private.h"
#include "dlinklist.h"
struct iscsi_context *iscsi_create_context(const char *initiator_name)
{
struct iscsi_context *iscsi;
iscsi = malloc(sizeof(struct iscsi_context));
if (iscsi == NULL) {
printf("Failed to allocate iscsi context\n");
return NULL;
}
bzero(iscsi, sizeof(struct iscsi_context));
iscsi->initiator_name = strdup(initiator_name);
if (iscsi->initiator_name == NULL) {
printf("Failed to allocate initiator name context\n");
free(iscsi);
return NULL;
}
iscsi->fd = -1;
/* use a "random" isid */
srandom(getpid() ^ time(NULL));
iscsi_set_random_isid(iscsi);
return iscsi;
}
int iscsi_set_random_isid(struct iscsi_context *iscsi)
{
iscsi->isid[0] = 0x80;
iscsi->isid[1] = random()&0xff;
iscsi->isid[2] = random()&0xff;
iscsi->isid[3] = random()&0xff;
iscsi->isid[4] = 0;
iscsi->isid[5] = 0;
return 0;
}
int iscsi_set_alias(struct iscsi_context *iscsi, const char *alias)
{
if (iscsi == NULL) {
printf("Context is NULL when adding alias\n");
return -1;
}
if (iscsi->is_loggedin != 0) {
printf("Already logged in when adding alias\n");
return -2;
}
if (iscsi->alias != NULL) {
free(discard_const(iscsi->alias));
iscsi->alias = NULL;
}
iscsi->alias = strdup(alias);
if (iscsi->alias == NULL) {
printf("Failed to allocate alias name\n");
return -3;
}
return 0;
}
int iscsi_set_targetname(struct iscsi_context *iscsi, const char *target_name)
{
if (iscsi == NULL) {
printf("Context is NULL when adding targetname\n");
return -1;
}
if (iscsi->is_loggedin != 0) {
printf("Already logged in when adding targetname\n");
return -2;
}
if (iscsi->target_name != NULL) {
free(discard_const(iscsi->target_name));
iscsi->target_name= NULL;
}
iscsi->target_name = strdup(target_name);
if (iscsi->target_name == NULL) {
printf("Failed to allocate target name\n");
return -3;
}
return 0;
}
int iscsi_destroy_context(struct iscsi_context *iscsi)
{
struct iscsi_pdu *pdu;
if (iscsi == NULL) {
return 0;
}
if (iscsi->initiator_name != NULL) {
free(discard_const(iscsi->initiator_name));
iscsi->initiator_name = NULL;
}
if (iscsi->alias != NULL) {
free(discard_const(iscsi->alias));
iscsi->alias = NULL;
}
if (iscsi->is_loggedin != 0) {
printf("deswtroying context while logged in\n");
}
if (iscsi->fd != -1) {
iscsi_disconnect(iscsi);
}
if (iscsi->inbuf != NULL) {
free(iscsi->inbuf);
iscsi->inbuf = NULL;
iscsi->insize = 0;
iscsi->inpos = 0;
}
while ((pdu = iscsi->outqueue)) {
DLIST_REMOVE(iscsi->outqueue, pdu);
pdu->callback(iscsi, ISCSI_STATUS_CANCELLED, NULL, pdu->private_data);
iscsi_free_pdu(iscsi, pdu);
}
while ((pdu = iscsi->waitpdu)) {
DLIST_REMOVE(iscsi->waitpdu, pdu);
pdu->callback(iscsi, ISCSI_STATUS_CANCELLED, NULL, pdu->private_data);
iscsi_free_pdu(iscsi, pdu);
}
free(iscsi);
return 0;
}
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