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/*
Unix SMB/CIFS implementation.
SMB client socket context management functions
Copyright (C) Andrew Tridgell 1994-2003
Copyright (C) James Myers 2003 <myersjj@samba.org>
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
/*
destroy a socket
*/
static int sock_destructor(void *ptr)
{
struct smbcli_socket *sock = ptr;
if (sock->fd != -1) {
close(sock->fd);
sock->fd = -1;
}
return 0;
}
/*
create a smbcli_socket context
*/
struct smbcli_socket *smbcli_sock_init(TALLOC_CTX *mem_ctx)
{
struct smbcli_socket *sock;
sock = talloc_p(mem_ctx, struct smbcli_socket);
if (!sock) {
return NULL;
}
ZERO_STRUCTP(sock);
sock->fd = -1;
sock->port = 0;
/* 20 second default timeout */
sock->timeout = 20000;
sock->hostname = NULL;
talloc_set_destructor(sock, sock_destructor);
return sock;
}
/*
connect a smbcli_socket context to an IP/port pair
if port is 0 then choose 445 then 139
*/
BOOL smbcli_sock_connect(struct smbcli_socket *sock, struct in_addr *ip, int port)
{
if (getenv("LIBSMB_PROG")) {
sock->fd = sock_exec(getenv("LIBSMB_PROG"));
return sock->fd != -1;
}
if (port == 0) {
int i;
const char **ports = lp_smb_ports();
for (i=0;ports[i];i++) {
port = atoi(ports[i]);
if (port != 0 && smbcli_sock_connect(sock, ip, port)) {
return True;
}
}
return False;
}
sock->dest_ip = *ip;
sock->port = port;
sock->fd = open_socket_out(SOCK_STREAM,
&sock->dest_ip,
sock->port,
LONG_CONNECT_TIMEOUT);
if (sock->fd == -1) {
return False;
}
set_blocking(sock->fd, False);
set_socket_options(sock->fd, lp_socket_options());
return True;
}
/****************************************************************************
mark the socket as dead
****************************************************************************/
void smbcli_sock_dead(struct smbcli_socket *sock)
{
if (sock->fd != -1) {
close(sock->fd);
sock->fd = -1;
}
}
/****************************************************************************
Set socket options on a open connection.
****************************************************************************/
void smbcli_sock_set_options(struct smbcli_socket *sock, const char *options)
{
set_socket_options(sock->fd, options);
}
/****************************************************************************
Write to socket. Return amount written.
****************************************************************************/
ssize_t smbcli_sock_write(struct smbcli_socket *sock, const char *data, size_t len)
{
if (sock->fd == -1) {
errno = EIO;
return -1;
}
return write(sock->fd, data, len);
}
/****************************************************************************
Read from socket. return amount read
****************************************************************************/
ssize_t smbcli_sock_read(struct smbcli_socket *sock, char *data, size_t len)
{
if (sock->fd == -1) {
errno = EIO;
return -1;
}
return read(sock->fd, data, len);
}
/****************************************************************************
resolve a hostname and connect
****************************************************************************/
BOOL smbcli_sock_connect_byname(struct smbcli_socket *sock, const char *host, int port)
{
int name_type = 0x20;
struct in_addr ip;
char *name, *p;
BOOL ret;
if (getenv("LIBSMB_PROG")) {
sock->fd = sock_exec(getenv("LIBSMB_PROG"));
return sock->fd != -1;
}
name = talloc_strdup(sock, host);
/* allow hostnames of the form NAME#xx and do a netbios lookup */
if ((p = strchr(name, '#'))) {
name_type = strtol(p+1, NULL, 16);
*p = 0;
}
if (!resolve_name(name, name, &ip, name_type)) {
talloc_free(name);
return False;
}
ret = smbcli_sock_connect(sock, &ip, port);
if (ret) {
sock->hostname = talloc_steal(sock, name);
} else {
talloc_free(name);
}
return ret;
}
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