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/*
* Client functions
*
* Copyright (C) 2007 Olaf Kirch <olaf.kirch@oracle.com>
*/
#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include "config.h"
#include <libisns/isns.h>
#include "security.h"
#include <libisns/util.h>
#include "internal.h"
static isns_client_t *
__isns_create_default_client(isns_socket_t *sock, isns_security_t *ctx,
const char *source_name)
{
isns_client_t *clnt;
clnt = isns_calloc(1, sizeof(*clnt));
if (!source_name)
source_name = isns_config.ic_source_name;
clnt->ic_source = isns_source_create_iscsi(source_name);
clnt->ic_socket = sock;
isns_socket_set_security_ctx(clnt->ic_socket, ctx);
return clnt;
}
isns_client_t *
isns_create_client(isns_security_t *ctx, const char *source_name)
{
isns_socket_t *sock;
const char *server_name;
server_name = isns_config.ic_server_name;
if (!server_name)
return NULL;
if (!strcasecmp(server_name, "SLP:")
&& !(server_name = isns_slp_find())) {
isns_error("Unable to locate iSNS server through SLP\n");
return NULL;
}
sock = isns_create_bound_client_socket(
isns_config.ic_bind_address,
server_name,
"isns", AF_UNSPEC, SOCK_STREAM);
if (sock == NULL) {
isns_error("Unable to create socket for host \"%s\"\n",
isns_config.ic_server_name);
return NULL;
}
return __isns_create_default_client(sock,
ctx? : isns_default_security_context(0),
source_name);
}
isns_client_t *
isns_create_default_client(isns_security_t *ctx)
{
return isns_create_client(ctx, isns_config.ic_source_name);
}
isns_client_t *
isns_create_local_client(isns_security_t *ctx, const char *source_name)
{
isns_socket_t *sock;
if (isns_config.ic_control_socket == NULL)
isns_fatal("Cannot use local mode: no local control socket\n");
sock = isns_create_client_socket(isns_config.ic_control_socket,
NULL, 0, SOCK_STREAM);
if (sock == NULL) {
isns_error("Unable to create control socket (%s)\n",
isns_config.ic_control_socket);
return NULL;
}
return __isns_create_default_client(sock, ctx, source_name);
}
int
isns_client_call(isns_client_t *clnt,
isns_simple_t **inout)
{
return isns_simple_call(clnt->ic_socket, inout);
}
void
isns_client_destroy(isns_client_t *clnt)
{
if (clnt->ic_socket)
isns_socket_free(clnt->ic_socket);
if (clnt->ic_source)
isns_source_release(clnt->ic_source);
isns_free(clnt);
}
/*
* Get the local address
*/
int
isns_client_get_local_address(const isns_client_t *clnt,
isns_portal_info_t *portal_info)
{
return isns_socket_get_portal_info(clnt->ic_socket, portal_info);
}
/*
* Create a security context
*/
#ifdef WITH_SECURITY
static isns_security_t *
__create_security_context(const char *name, const char *auth_key,
const char *server_key)
{
isns_security_t *ctx;
isns_principal_t *princ;
if (!isns_config.ic_security)
return NULL;
ctx = isns_create_dsa_context();
if (ctx == NULL)
isns_fatal("Unable to create security context\n");
/* Load my own key */
princ = isns_security_load_privkey(ctx, auth_key);
if (!princ)
isns_fatal("Unable to load private key from %s\n",
auth_key);
isns_principal_set_name(princ, name);
isns_security_set_identity(ctx, princ);
if (server_key) {
/* We're a client, and we want to load the
* server's public key in order to authenticate
* the server's responses.
*/
princ = isns_security_load_pubkey(ctx, server_key);
if (!princ)
isns_fatal("Unable to load public key from %s\n",
server_key);
/* Do *not* set a name for this principal -
* this will be the default principal used when
* verifying the server's reply, which is a good thing
* because we don't know what SPI the server will
* be using. */
isns_add_principal(ctx, princ);
/* But set a policy for the server which allows it
to send ESI and SCN messages */
isns_principal_set_policy(princ, isns_policy_server());
}
return ctx;
}
#else /* WITH_SECURITY */
static isns_security_t *
__create_security_context(__attribute__((unused))const char *name,
__attribute__((unused))const char *auth_key,
__attribute__((unused))const char *server_key)
{
if (!isns_config.ic_security)
return NULL;
isns_error("Cannot create security context: security disabled at build time\n");
return NULL;
}
#endif /* WITH_SECURITY */
/*
* Create the default security context
*/
isns_security_t *
isns_default_security_context(int server_only)
{
static isns_security_t *ctx;
if (ctx == NULL)
ctx = __create_security_context(isns_config.ic_auth_name,
isns_config.ic_auth_key_file,
server_only? NULL : isns_config.ic_server_key_file);
return ctx;
}
/*
* Create the control security context
*/
isns_security_t *
isns_control_security_context(int server_only)
{
static isns_security_t *ctx;
if (ctx == NULL)
ctx = __create_security_context(isns_config.ic_control_name,
isns_config.ic_control_key_file,
server_only? NULL : isns_config.ic_server_key_file);
return ctx;
}
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