irc.c

/*
 * Copyright (c) 2004, Adam Dunkels.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 *
 * This file is part of the Contiki operating system.
 * 
 * Author: Adam Dunkels <adam@sics.se>
 *
 */

#include <string.h>
#include <stddef.h>

#include "contiki-conf.h"
#include "contiki.h"
#include "contiki-net.h"
#include "ircc.h"

#include "ctk/ctk.h"
#include "ctk/ctk-textentry-cmdline.h"

#include "lib/petsciiconv.h"

#ifdef IRC_CONF_WIDTH
#define LOG_WIDTH IRC_CONF_WIDTH
#else
#define LOG_WIDTH 37
#endif

#ifdef IRC_CONF_HEIGHT
#define LOG_HEIGHT IRC_CONF_HEIGHT
#else
#define LOG_HEIGHT 17
#endif

PROCESS(irc_process, "IRC client");

AUTOSTART_PROCESSES(&irc_process);

static struct ctk_menu menu;
unsigned char menuitem_setup, menuitem_quit;

static struct ctk_window window;
static char log[LOG_WIDTH * LOG_HEIGHT];
static char line[LOG_WIDTH*2];
static struct ctk_label loglabel =
  {CTK_LABEL(0, 0, LOG_WIDTH, LOG_HEIGHT, log)};
static struct ctk_textentry lineedit =
  {CTK_TEXTENTRY_INPUT(0, LOG_HEIGHT, LOG_WIDTH - 2, 1, line, sizeof(line) - 1,
                       ctk_textentry_cmdline_input)};

static struct ctk_window setupwindow;
#define SETUPWINDOW_WIDTH 18
#define SETUPWINDOW_HEIGHT 9
#define MAX_SERVERLEN 32
#define MAX_NICKLEN 16
static uip_ipaddr_t serveraddr;
static char server[MAX_SERVERLEN + 1];
static char nick[MAX_NICKLEN + 1];
static struct ctk_label serverlabel =
  {CTK_LABEL(1, 1, 11, 1, "IRC server: ")};
static struct ctk_textentry serverentry =
  {CTK_TEXTENTRY(0, 2, 16, 1, server, MAX_SERVERLEN)};

static struct ctk_label nicklabel =
  {CTK_LABEL(1, 4, 13, 1, "IRC nickname: ")};
static struct ctk_textentry nickentry =
  {CTK_TEXTENTRY(0, 5, 16, 1, nick, MAX_NICKLEN)};

static struct ctk_button connectbutton =
  {CTK_BUTTON(0, 7, 7, "Connect")};

/*static char nick[] = "asdf";
  static char server[] = "efnet.demon.co.uk";*/

static struct ircc_state s;

/*---------------------------------------------------------------------------*/
static void
quit(void)
{
  ctk_window_close(&window);
  ctk_window_close(&setupwindow);
  ctk_menu_remove(&menu);
  process_exit(&irc_process);
  LOADER_UNLOAD();
}
/*---------------------------------------------------------------------------*/
void
ircc_text_output(struct ircc_state *s, char *text1, char *text2)
{
  char *ptr;
  int len;
  
  if(text1 == NULL) {
    text1 = "";
  }
  
  if(text2 == NULL) {
    text2 = "";
  }
  
  /* Scroll previous entries upwards */
  memcpy(log, &log[LOG_WIDTH], LOG_WIDTH * (LOG_HEIGHT - 1));

  ptr = &log[LOG_WIDTH * (LOG_HEIGHT - 1)];
  len = (int)strlen(text1);

  memset(ptr, 0, LOG_WIDTH);
  strncpy(ptr, text1, LOG_WIDTH);
  if(len < LOG_WIDTH) {
    ptr += len;
    *ptr = ':';
    ++len;
    if(LOG_WIDTH - len > 0) {
      strncpy(ptr + 1, text2, LOG_WIDTH - len);
    }
  } else {
    len = 0;
  }

  if((int)strlen(text2) > LOG_WIDTH - len) {
    memcpy(log, &log[LOG_WIDTH], LOG_WIDTH * (LOG_HEIGHT - 1));
    strncpy(&log[LOG_WIDTH * (LOG_HEIGHT - 1)],
            text2 + LOG_WIDTH - len, LOG_WIDTH);
  }
  CTK_WIDGET_REDRAW(&loglabel);
  
}
/*---------------------------------------------------------------------------*/
static void
parse_line(void)
{
  int i;
  for(i = 0; i < (int)strlen(line); ++i) {
    line[i] &= 0x7f;
  }
  
  
  if(line[0] == '/') {
    if(strncmp(&line[1], "join", 4) == 0) {
      ircc_join(&s, &line[6]);
      ircc_text_output(&s, "Join", &line[6]);
    } else if(strncmp(&line[1], "list", 4) == 0) {
      ircc_list(&s);
      ircc_text_output(&s, "Channel list", "");
    } else if(strncmp(&line[1], "part", 4) == 0) {
      ircc_part(&s);
      ircc_text_output(&s, "Leaving channel", "");
    } else if(strncmp(&line[1], "quit", 4) == 0) {
      ircc_quit(&s);
    } else if(strncmp(&line[1], "me", 2) == 0) {
      petsciiconv_toascii(&line[4], strlen(&line[4]));
      ircc_actionmsg(&s, &line[4]);
      ircc_text_output(&s, "*", &line[4]);
    } else {
      ircc_text_output(&s, &line[1], "Not implemented");
      ircc_sent(&s);
    }
  } else {
    petsciiconv_toascii(line, sizeof(line) - 1);
    ircc_msg(&s, &line[0]);
    ircc_text_output(&s, nick, line);
  }
}
/*---------------------------------------------------------------------------*/
void
ircc_sent(struct ircc_state *s)
{
  /*  ctk_textedit_init(&lineedit);*/
  CTK_TEXTENTRY_CLEAR(&lineedit);
  CTK_WIDGET_REDRAW(&lineedit);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(irc_process, ev, data)
{
  ctk_arch_key_t c;
  uip_ipaddr_t *ipaddr;
  
  PROCESS_BEGIN();
  
  /*    ctk_textedit_init(&lineedit);*/
  CTK_TEXTENTRY_CLEAR(&lineedit);
  memset(log, 0, sizeof(log));
  ctk_window_new(&window, LOG_WIDTH, LOG_HEIGHT + 1, "IRC");
  CTK_WIDGET_ADD(&window, &loglabel);
  /*    ctk_textedit_add(&window, &lineedit);    */
  CTK_WIDGET_ADD(&window, &lineedit);
  CTK_WIDGET_FOCUS(&window, &lineedit);
  
  ctk_window_new(&setupwindow, SETUPWINDOW_WIDTH, SETUPWINDOW_HEIGHT,
                 "IRC setup");
  
  CTK_WIDGET_ADD(&setupwindow, &serverlabel);
  CTK_WIDGET_ADD(&setupwindow, &serverentry);
  CTK_WIDGET_ADD(&setupwindow, &nicklabel);
  CTK_WIDGET_ADD(&setupwindow, &nickentry);
  CTK_WIDGET_ADD(&setupwindow, &connectbutton);
  
  CTK_WIDGET_FOCUS(&setupwindow, &serverentry);
  
  ctk_window_open(&setupwindow);

  ctk_menu_new(&menu, "IRC");
  menuitem_setup = ctk_menuitem_add(&menu, "Setup");
  menuitem_quit = ctk_menuitem_add(&menu, "Quit");
  ctk_menu_add(&menu);
  
  while(1) {
    PROCESS_WAIT_EVENT();
    
    if(ev == PROCESS_EVENT_EXIT) {
      quit();
    } else if(ev == tcpip_event) {
      ircc_appcall(data);
    } else if(ev == ctk_signal_widget_activate) {
      if(data == (process_data_t)&lineedit) {
        parse_line();
      } else if(data == (process_data_t)&connectbutton) {
        ctk_window_close(&setupwindow);
        ctk_window_open(&window);
        ipaddr = &serveraddr;
#if UIP_UDP
        if(uiplib_ipaddrconv(server, &serveraddr) == 0) {
          if(resolv_lookup(server, &ipaddr) != RESOLV_STATUS_CACHED) {
            resolv_query(server);
          } else {
            uip_ipaddr_copy(&serveraddr, ipaddr);
          }
        }
#else /* UIP_UDP */
        uiplib_ipaddrconv(server, &serveraddr);
#endif /* UIP_UDP */
        if(ipaddr != NULL) {
          
          ircc_connect(&s, server, &serveraddr, nick);
        }
      }
#if UIP_UDP
    } else if(ev == resolv_event_found) {
      
          if(resolv_lookup(server, &ipaddr) != RESOLV_STATUS_CACHED) {
        ircc_text_output(&s, server, "hostname not found");
      } else {
        uip_ipaddr_copy(&serveraddr, ipaddr);
        ircc_connect(&s, server, &serveraddr, nick);
      }
#endif /* UIP_UDP */
    } else if(ev == ctk_signal_keypress) {
      c = (ctk_arch_key_t)(size_t)data;
      if(c == CH_ENTER) {
        parse_line();
      } else {
        /*      ctk_textedit_eventhandler(&lineedit, ev, data);*/
        CTK_WIDGET_FOCUS(&window, &lineedit);
      }
    } else if(ev == ctk_signal_menu_activate) {
      if((struct ctk_menu *)data == &menu) {
        if(menu.active == menuitem_setup) {
          ctk_window_open(&setupwindow);
        } else if(menu.active == menuitem_quit) {
          quit();
        }
      }
    }
  }
  PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
ircc_closed(struct ircc_state *s)
{
  ircc_text_output(s, server, "connection closed");
}
/*---------------------------------------------------------------------------*/
void
ircc_connected(struct ircc_state *s)
{
  ircc_text_output(s, server, "connected");
}
/*---------------------------------------------------------------------------*/