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/*
Unix SMB/Netbios implementation.
Version 2
SMB agent/socket plugin
Copyright (C) Andrew Tridgell 1999
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"
#include "smb.h"
extern int DEBUGLEVEL;
/****************************************************************************
terminate socket connection
****************************************************************************/
static void sock_redir_free(struct vagent_ops *va, struct sock_redir *sock)
{
if (sock->c != -1)
{
close(sock->c);
sock->c = -1;
}
if (sock->n != NULL)
{
va->free_sock(sock->n);
sock->n = NULL;
}
free(sock);
}
/****************************************************************************
free a sockent array
****************************************************************************/
static void free_sock_array(struct vagent_ops*va)
{
void(*fn)(void*) = (void(*)(void*))&va->free_sock;
free_void_array(va->num_socks, (void**)va->socks, *fn);
}
/****************************************************************************
add a sockent state to the array
****************************************************************************/
static struct sock_redir* add_sock_to_array(uint32 *len,
struct sock_redir ***array,
struct sock_redir *sock)
{
int i;
for (i = 0; i < (*len); i++)
{
if ((*array)[i] == NULL)
{
(*array)[i] = sock;
return sock;
}
}
return (struct sock_redir*)add_item_to_array(len,
(void***)array, (void*)sock);
}
/****************************************************************************
initiate sockent array
****************************************************************************/
void init_sock_redir(struct vagent_ops*va)
{
va->socks = NULL;
va->num_socks = 0;
}
/****************************************************************************
terminate sockent array
****************************************************************************/
void free_sock_redir(struct vagent_ops*va)
{
free_sock_array(va);
init_sock_redir(va);
}
/****************************************************************************
create a new sockent state from user credentials
****************************************************************************/
static struct sock_redir *sock_redir_get(struct vagent_ops *va, int fd)
{
struct sock_redir *sock = (struct sock_redir*)malloc(sizeof(*sock));
if (sock == NULL)
{
return NULL;
}
ZERO_STRUCTP(sock);
sock->c = fd;
sock->n = NULL;
DEBUG(10,("sock_redir_get:\tfd:\t%d\n", fd));
return sock;
}
/****************************************************************************
init sock state
****************************************************************************/
static void sock_add(struct vagent_ops *va, int fd)
{
struct sock_redir *sock;
sock = sock_redir_get(va, fd);
if (sock != NULL)
{
add_sock_to_array(&va->num_socks, &va->socks, sock);
}
}
/****************************************************************************
delete a sockent state
****************************************************************************/
static BOOL sock_del(struct vagent_ops *va, int fd)
{
int i;
for (i = 0; i < va->num_socks; i++)
{
if (va->socks[i] == NULL) continue;
if (va->socks[i]->c == fd)
{
sock_redir_free(va, va->socks[i]);
va->socks[i] = NULL;
return True;
}
}
return False;
}
void start_agent(struct vagent_ops *va)
{
int s, c;
s = va->get_agent_sock(va->id);
while (1)
{
int i;
fd_set fds;
int num;
struct sockaddr_un addr;
int in_addrlen = sizeof(addr);
int maxfd = s;
FD_ZERO(&fds);
FD_SET(s, &fds);
for (i = 0; i < va->num_socks; i++)
{
if (va->socks[i] != NULL)
{
int fd = va->socks[i]->c;
FD_SET(fd, &fds);
maxfd = MAX(maxfd, fd);
if (va->socks[i]->n != NULL)
{
fd = va->socks[i]->s;
FD_SET(fd, &fds);
maxfd = MAX(fd, maxfd);
}
}
}
dbgflush();
num = sys_select(maxfd+1,&fds,NULL, NULL);
if (num <= 0)
{
continue;
}
if (FD_ISSET(s, &fds))
{
FD_CLR(s, &fds);
c = accept(s, (struct sockaddr*)&addr, &in_addrlen);
if (c != -1)
{
sock_add(va, c);
}
}
for (i = 0; i < va->num_socks; i++)
{
if (va->socks[i] == NULL)
{
continue;
}
if (FD_ISSET(va->socks[i]->c, &fds))
{
FD_CLR(va->socks[i]->c, &fds);
if (!va->process_cli_sock(va->socks,
va->num_socks,
va->socks[i]))
{
sock_redir_free(va, va->socks[i]);
va->socks[i] = NULL;
}
}
if (va->socks[i] == NULL)
{
continue;
}
if (va->socks[i]->n == NULL)
{
continue;
}
if (FD_ISSET(va->socks[i]->s, &fds))
{
FD_CLR(va->socks[i]->s, &fds);
if (!va->process_srv_sock(va->socks,
va->num_socks,
va->socks[i]->s))
{
sock_redir_free(va, va->socks[i]);
va->socks[i] = NULL;
}
}
}
}
}
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