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construct/servlink/control.c
nenolod 212380e3f4 [svn] - the new plan:
+ branches/release-2.1 -> 2.2 base
  + 3.0 -> branches/cxxconversion
  + backport some immediate 3.0 functionality for 2.2
  + other stuff
2007-01-24 22:40:21 -08:00

129 lines
3.6 KiB
C

/************************************************************************
* IRC - Internet Relay Chat, servlink/servlink.c
*
* 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 1, 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.
*
* $Id: control.c 1285 2006-05-05 15:03:53Z nenolod $
*/
#include "setup.h"
#include <sys/types.h>
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif
#include "servlink.h"
#include "io.h"
#include "control.h"
static cmd_handler cmd_set_zip_out_level;
static cmd_handler cmd_start_zip_out;
static cmd_handler cmd_start_zip_in;
static cmd_handler cmd_init;
struct command_def command_table[] = {
{CMD_SET_ZIP_OUT_LEVEL, cmd_set_zip_out_level, COMMAND_FLAG_DATA},
{CMD_START_ZIP_OUT, cmd_start_zip_out, 0},
{CMD_START_ZIP_IN, cmd_start_zip_in, 0},
{CMD_INJECT_RECVQ, process_recvq, COMMAND_FLAG_DATA},
{CMD_INJECT_SENDQ, process_sendq, COMMAND_FLAG_DATA},
{CMD_INIT, cmd_init, 0},
{CMD_ZIPSTATS, send_zipstats, 0},
{0, 0, 0}
};
void
cmd_set_zip_out_level(struct ctrl_command *cmd)
{
#ifdef HAVE_LIBZ
out_state.zip_state.level = *cmd->data;
if((out_state.zip_state.level < -1) || (out_state.zip_state.level > 9))
send_error("invalid compression level %d", out_state.zip_state.level);
#else
send_error("can't set compression level - no libz support!");
#endif
}
void
cmd_start_zip_out(struct ctrl_command *cmd)
{
#ifdef HAVE_LIBZ
int ret;
if(out_state.zip)
send_error("can't start compression - already started!");
out_state.zip_state.z_stream.total_in = 0;
out_state.zip_state.z_stream.total_out = 0;
out_state.zip_state.z_stream.zalloc = (alloc_func) 0;
out_state.zip_state.z_stream.zfree = (free_func) 0;
out_state.zip_state.z_stream.data_type = Z_ASCII;
if(out_state.zip_state.level <= 0)
out_state.zip_state.level = Z_DEFAULT_COMPRESSION;
if((ret = deflateInit(&out_state.zip_state.z_stream, out_state.zip_state.level)) != Z_OK)
send_error("deflateInit failed: %s", zError(ret));
out_state.zip = 1;
#else
send_error("can't start compression - no libz support!");
#endif
}
void
cmd_start_zip_in(struct ctrl_command *cmd)
{
#ifdef HAVE_LIBZ
int ret;
if(in_state.zip)
send_error("can't start decompression - already started!");
in_state.zip_state.z_stream.total_in = 0;
in_state.zip_state.z_stream.total_out = 0;
in_state.zip_state.z_stream.zalloc = (alloc_func) 0;
in_state.zip_state.z_stream.zfree = (free_func) 0;
in_state.zip_state.z_stream.data_type = Z_ASCII;
if((ret = inflateInit(&in_state.zip_state.z_stream)) != Z_OK)
send_error("inflateInit failed: %s", zError(ret));
in_state.zip = 1;
#else
send_error("can't start decompression - no libz support!");
#endif
}
void
cmd_init(struct ctrl_command *cmd)
{
if(in_state.active || out_state.active)
send_error("CMD_INIT sent twice!");
in_state.active = 1;
out_state.active = 1;
CONTROL.read_cb = read_ctrl;
CONTROL.write_cb = NULL;
LOCAL.read_cb = read_data;
LOCAL.write_cb = NULL;
REMOTE.read_cb = read_net;
REMOTE.write_cb = NULL;
}