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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;
FILE *control_socket;
gint control_fd;
};
ControlClient *
control_client_new(const gchar *name)
{
ControlClient *self = g_new0(ControlClient, 1);
self->path = g_strdup(name);
return self;
}
gboolean
control_client_connect(ControlClient *self)
{
GSockAddr *saddr = NULL;
if (self->control_socket != NULL)
{
return TRUE;
}
saddr = g_sockaddr_unix_new(self->path);
self->control_fd = socket(PF_UNIX, SOCK_STREAM, 0);
if (self->control_fd == -1)
{
fprintf(stderr, "Error opening control socket, socket='%s', error='%s'\n", self->path, strerror(errno));
goto error;
}
if (g_connect(self->control_fd, saddr) != G_IO_STATUS_NORMAL)
{
fprintf(stderr, "Error connecting control socket, socket='%s', error='%s'\n", self->path, strerror(errno));
close(self->control_fd);
goto error;
}
self->control_socket = fdopen(self->control_fd, "r+");
error:
g_sockaddr_unref(saddr);
return !!self->control_socket;
}
gint
control_client_send_command(ControlClient *self, const gchar *cmd)
{
return fwrite(cmd, strlen(cmd), 1, self->control_socket);
}
#define BUFF_LEN 8192
gint
control_client_read_reply(ControlClient *self, CommandResponseHandlerFunc response_handler, gpointer user_data)
{
gint retval = 0;
gchar buf[BUFF_LEN], *line;
GString *chunk = g_string_sized_new(256);
while (1)
{
line = fgets(buf, sizeof(buf), self->control_socket);
if (!line)
{
fprintf(stderr, "Error reading or EOF occured on socket, error='%s'\n", strerror(errno));
return 1;
}
if (strcmp(line, ".\n") == 0)
break;
g_string_assign(chunk, line);
if (retval == 0)
retval = response_handler(chunk, user_data);
}
g_string_free(chunk, TRUE);
return retval;
}
void
control_client_free(ControlClient *self)
{
if (self->control_socket)
{
fflush(self->control_socket);
shutdown(self->control_fd, SHUT_RDWR);
fclose(self->control_socket);
}
g_free(self->path);
g_free(self);
}
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