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/*
* Copyright (c) 2002-2013 Balabit
* Copyright (c) 1998-2013 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "control-client.h"
#include "gsocket.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
struct _ControlClient
{
gchar *path;
gint control_socket;
};
ControlClient *
control_client_new(const gchar *name)
{
ControlClient *self = g_new(ControlClient,1);
self->path = g_strdup(name);
self->control_socket = -1;
return self;
}
gboolean
control_client_connect(ControlClient *self)
{
GSockAddr *saddr = NULL;
if (self->control_socket != -1)
{
return TRUE;
}
saddr = g_sockaddr_unix_new(self->path);
self->control_socket = socket(PF_UNIX, SOCK_STREAM, 0);
if (self->control_socket == -1)
{
fprintf(stderr, "Error opening control socket, socket='%s', error='%s'\n", self->path, strerror(errno));
goto error;
}
if (g_connect(self->control_socket, saddr) != G_IO_STATUS_NORMAL)
{
fprintf(stderr, "Error connecting control socket, socket='%s', error='%s'\n", self->path, strerror(errno));
close(self->control_socket);
self->control_socket = -1;
goto error;
}
error:
g_sockaddr_unref(saddr);
return (self->control_socket != -1);
}
gint
control_client_send_command(ControlClient *self, const gchar *cmd)
{
return write(self->control_socket, cmd, strlen(cmd));
}
#define BUFF_LEN 8192
GString *
control_client_read_reply(ControlClient *self)
{
gssize len = 0;
gchar buff[BUFF_LEN];
GString *reply = g_string_sized_new(256);
while (1)
{
if ((len = read(self->control_socket, buff, BUFF_LEN - 1)) < 0)
{
fprintf(stderr, "Error reading control socket, error='%s'\n", strerror(errno));
g_string_free(reply, TRUE);
return NULL;
}
if (len == 0)
{
fprintf(stderr, "EOF occured while reading control socket\n");
g_string_free(reply, TRUE);
return NULL;
}
g_string_append_len(reply, buff, len);
if (reply->str[reply->len - 1] == '\n' &&
reply->str[reply->len - 2] == '.' &&
reply->str[reply->len - 3] == '\n')
{
g_string_truncate(reply, reply->len - 3);
break;
}
}
return reply;
}
void
control_client_free(ControlClient *self)
{
if (self->control_socket != -1)
{
shutdown(self->control_socket, SHUT_RDWR);
close(self->control_socket);
}
g_free(self->path);
g_free(self);
}
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