source: owl.c @ 33db995

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Last change on this file since 33db995 was 52a0f14, checked in by Nelson Elhage <nelhage@mit.edu>, 13 years ago
stat the zhm asynchronously at startup. If Zephyr is not present, this means we can continue booting immediately, rather than waiting a second for the zhm to not respond. The downside is that you no longer get an error message if Zephyr is unavailable, but that can be fixed by adding a timeout timer.
  • Property mode set to 100644
File size: 22.7 KB
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1/*  Copyright (c) 2006-2009 The BarnOwl Developers. All rights reserved.
2 *  Copyright (c) 2004 James Kretchmar. All rights reserved.
3 *
4 *  This program is free software. You can redistribute it and/or
5 *  modify under the terms of the Sleepycat License. See the COPYING
6 *  file included with the distribution for more information.
7 */
8
9#include <stdio.h>
10#include <unistd.h>
11#include <stdlib.h>
12#include <string.h>
13#include <signal.h>
14#include <time.h>
15#include <sys/param.h>
16#include <sys/types.h>
17#include <sys/time.h>
18#include <termios.h>
19#include <sys/stat.h>
20#include <locale.h>
21#include "owl.h"
22
23
24#if OWL_STDERR_REDIR
25#ifdef HAVE_SYS_IOCTL_H
26#include <sys/ioctl.h>
27#endif
28#ifdef HAVE_SYS_FILIO_H
29#include <sys/filio.h>
30#endif
31int stderr_replace(void);
32#endif
33
34#define STDIN 0
35
36static const char fileIdent[] = "$Id$";
37
38owl_global g;
39
40int main(int argc, char **argv, char **env)
41{
42  WINDOW *recwin, *sepwin, *typwin, *msgwin;
43  owl_editwin *tw;
44  owl_popwin *pw;
45  int ret, debug, argcsave, followlast;
46  int newmsgs, nexttimediff;
47  struct sigaction sigact;
48  char *configfile, *tty, *perlout, *perlerr, **argvsave;
49  char *confdir;
50  owl_filter *f;
51  owl_style *s;
52  time_t nexttime, now;
53  struct tm *today;
54  char *dir;
55  struct termios tio;
56  owl_message *m;
57
58  if (!GLIB_CHECK_VERSION (2, 12, 0))
59    g_error ("GLib version 2.12.0 or above is needed.");
60
61  argcsave=argc;
62  argvsave=argv;
63  configfile=NULL;
64  confdir = NULL;
65  tty=NULL;
66  debug=0;
67  g.load_initial_subs = 1;
68
69  setlocale(LC_ALL, "");
70 
71  if (argc>0) {
72    argv++;
73    argc--;
74  }
75  while (argc>0) {
76    if (!strcmp(argv[0], "-n")) {
77      g.load_initial_subs = 0;
78      argv++;
79      argc--;
80    } else if (!strcmp(argv[0], "-c")) {
81      if (argc<2) {
82        fprintf(stderr, "Too few arguments to -c\n");
83        usage();
84        exit(1);
85      }
86      configfile=argv[1];
87      argv+=2;
88      argc-=2;
89    } else if (!strcmp(argv[0], "-t")) {
90      if (argc<2) {
91        fprintf(stderr, "Too few arguments to -t\n");
92        usage();
93        exit(1);
94      }
95      tty=argv[1];
96      argv+=2;
97      argc-=2;
98    } else if (!strcmp(argv[0], "-s")){
99      if (argc<2) {
100        fprintf(stderr, "Too few arguments to -s\n");
101        usage();
102        exit(1);
103      }
104      confdir = argv[1];
105      argv+=2;
106      argc-=2;
107    } else if (!strcmp(argv[0], "-d")) {
108      debug=1;
109      argv++;
110      argc--;
111    } else if (!strcmp(argv[0], "-D")) {
112      debug=1;
113      unlink(OWL_DEBUG_FILE);
114      argv++;
115      argc--;
116    } else if (!strcmp(argv[0], "-v")) {
117      printf("This is barnowl version %s\n", OWL_VERSION_STRING);
118      exit(0);
119    } else {
120      fprintf(stderr, "Unknown argument\n");
121      usage();       
122      exit(1);
123    }
124  }
125
126  owl_function_debugmsg("startup: Finished parsing arguments");
127
128  /* signal handler */
129  /*sigact.sa_handler=sig_handler;*/
130  sigact.sa_sigaction=sig_handler;
131  sigemptyset(&sigact.sa_mask);
132  sigact.sa_flags=SA_SIGINFO;
133  sigaction(SIGWINCH, &sigact, NULL);
134  sigaction(SIGALRM, &sigact, NULL);
135  sigaction(SIGPIPE, &sigact, NULL);
136  sigaction(SIGTERM, &sigact, NULL);
137  sigaction(SIGHUP, &sigact, NULL);
138
139  /* save initial terminal settings */
140  tcgetattr(0, owl_global_get_startup_tio(&g));
141
142  /* turn ISTRIP off */
143  tcgetattr(0, &tio);
144  tio.c_iflag &= ~ISTRIP;
145  tcsetattr(0, TCSAFLUSH, &tio);
146
147  /* screen init */
148  if (!getenv("TERMINFO")) {
149    owl_function_debugmsg("startup: Not setting TERMINFO");
150  } else {
151    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
152  }
153  initscr();
154  start_color();
155#ifdef HAVE_USE_DEFAULT_COLORS
156  use_default_colors();
157#endif
158  raw();
159  noecho();
160
161  /* define simple color pairs */
162  if (has_colors() && COLOR_PAIRS>=8) {
163    int bg = COLOR_BLACK;
164#ifdef HAVE_USE_DEFAULT_COLORS
165    bg = -1;
166#endif
167    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   bg);
168    init_pair(OWL_COLOR_RED,     COLOR_RED,     bg);
169    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   bg);
170    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  bg);
171    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    bg);
172    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, bg);
173    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    bg);
174    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   bg);
175  }
176
177  /* owl global init */
178  owl_global_init(&g);
179  if (debug) owl_global_set_debug_on(&g);
180  if (confdir) owl_global_set_confdir(&g, confdir);
181  owl_function_debugmsg("startup: first available debugging message");
182  owl_global_set_startupargs(&g, argcsave, argvsave);
183  owl_global_set_haveaim(&g);
184
185  /* prepare stdin dispatch */
186  {
187    owl_dispatch *d = owl_malloc(sizeof(owl_dispatch));
188    d->fd = STDIN;
189    d->cfunc = &owl_process_input;
190    d->destroy = NULL;
191    owl_select_add_dispatch(d);
192  }
193
194  owl_zephyr_initialize();
195
196#if OWL_STDERR_REDIR
197  /* Do this only after we've started curses up... */
198  {
199    owl_dispatch *d = owl_malloc(sizeof(owl_dispatch));
200    owl_function_debugmsg("startup: doing stderr redirection");
201    d->fd = stderr_replace();
202    d->cfunc = stderr_redirect_handler;
203    d->destroy = NULL;
204    owl_select_add_dispatch(d);
205  }
206#endif
207
208  /* create the owl directory, in case it does not exist */
209  owl_function_debugmsg("startup: creating owl directory, if not present");
210  dir=owl_global_get_confdir(&g);
211  mkdir(dir, S_IRWXU);
212
213  /* set the tty, either from the command line, or by figuring it out */
214  owl_function_debugmsg("startup: setting tty name");
215  if (tty) {
216    owl_global_set_tty(&g, tty);
217  } else {
218    owl_global_set_tty(&g, owl_util_get_default_tty());
219  }
220
221  /* Initialize perl */
222  owl_function_debugmsg("startup: processing config file");
223  owl_context_set_readconfig(owl_global_get_context(&g));
224  perlerr=owl_perlconfig_initperl(configfile, &argc, &argv, &env);
225  if (perlerr) {
226    endwin();
227    owl_function_error("Internal perl error: %s\n", perlerr);
228    fprintf(stderr, "Internal perl error: %s\n", perlerr);
229    fflush(stderr);
230    printf("Internal perl error: %s\n", perlerr);
231    fflush(stdout);
232    exit(1);
233  }
234
235  /* setup the default filters */
236  /* the personal filter will need to change again when AIM chat's are
237   *  included.  Also, there should be an %aimme% */
238  owl_function_debugmsg("startup: creating default filters");
239  f=owl_malloc(sizeof(owl_filter));
240  owl_filter_init_fromstring(f, "personal", "isprivate ^true$ and ( not type ^zephyr$"
241                             " or ( class ^message and"
242                             " ( instance ^personal$ or instance ^urgent$ ) ) )");
243  owl_list_append_element(owl_global_get_filterlist(&g), f);
244
245  f=owl_malloc(sizeof(owl_filter));
246  owl_filter_init_fromstring(f, "wordwrap", "not ( type ^admin$ or type ^zephyr$ ) ");
247  owl_list_append_element(owl_global_get_filterlist(&g), f);
248
249  f=owl_malloc(sizeof(owl_filter));
250  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
251  owl_list_append_element(owl_global_get_filterlist(&g), f);
252
253  f=owl_malloc(sizeof(owl_filter));
254  owl_filter_init_fromstring(f, "ping", "opcode ^ping$");
255  owl_list_append_element(owl_global_get_filterlist(&g), f);
256
257  f=owl_malloc(sizeof(owl_filter));
258  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
259  owl_list_append_element(owl_global_get_filterlist(&g), f);
260
261  f=owl_malloc(sizeof(owl_filter));
262  owl_filter_init_fromstring(f, "login", "not login ^none$");
263  owl_list_append_element(owl_global_get_filterlist(&g), f);
264
265  f=owl_malloc(sizeof(owl_filter));
266  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
267  owl_list_append_element(owl_global_get_filterlist(&g), f);
268
269  f=owl_malloc(sizeof(owl_filter));
270  owl_filter_init_fromstring(f, "out", "direction ^out$");
271  owl_list_append_element(owl_global_get_filterlist(&g), f);
272
273  f=owl_malloc(sizeof(owl_filter));
274  owl_filter_init_fromstring(f, "aim", "type ^aim$");
275  owl_list_append_element(owl_global_get_filterlist(&g), f);
276
277  f=owl_malloc(sizeof(owl_filter));
278  owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$");
279  owl_list_append_element(owl_global_get_filterlist(&g), f);
280
281  f=owl_malloc(sizeof(owl_filter));
282  owl_filter_init_fromstring(f, "none", "false");
283  owl_list_append_element(owl_global_get_filterlist(&g), f);
284
285  f=owl_malloc(sizeof(owl_filter));
286  owl_filter_init_fromstring(f, "all", "true");
287  owl_list_append_element(owl_global_get_filterlist(&g), f);
288
289  /* set the current view */
290  owl_function_debugmsg("startup: setting the current view");
291  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
292
293  /* AIM init */
294  owl_function_debugmsg("startup: doing AIM initialization");
295  owl_aim_init();
296
297  /* execute the startup function in the configfile */
298  owl_function_debugmsg("startup: executing perl startup, if applicable");
299  perlout = owl_perlconfig_execute("BarnOwl::Hooks::_startup();");
300  if (perlout) owl_free(perlout);
301
302  /* hold on to the window names for convenience */
303  msgwin=owl_global_get_curs_msgwin(&g);
304  recwin=owl_global_get_curs_recwin(&g);
305  sepwin=owl_global_get_curs_sepwin(&g);
306  typwin=owl_global_get_curs_typwin(&g);
307  tw=owl_global_get_typwin(&g);
308
309  /* welcome message */
310  owl_function_debugmsg("startup: creating splash message");
311  owl_function_adminmsg("",
312    "-----------------------------------------------------------------------\n"
313    "Welcome to barnowl version " OWL_VERSION_STRING ".  Press 'h' for on-line help.\n"
314    "To see a quick introduction, type ':show quickstart'.                  \n"
315    "                                                                       \n"
316    "BarnOwl is free software. Type ':show license' for more                \n"
317    "information.                                                     ^ ^   \n"
318    "                                                                 OvO   \n"
319    "Please report any bugs or suggestions to bug-barnowl@mit.edu    (   )  \n"
320    "-----------------------------------------------------------------m-m---\n"
321  );
322  sepbar(NULL);
323
324  /* process the startup file */
325  owl_function_debugmsg("startup: processing startup file");
326  owl_function_source(NULL);
327
328  wrefresh(sepwin);
329
330  /* First buddy check to sync the list without notifications */
331  owl_function_debugmsg("startup: doing initial zephyr buddy check");
332  /* owl_function_zephyr_buddy_check(0); */
333
334  /* set the startup and default style, based on userclue and presence of a
335   * formatting function */
336  owl_function_debugmsg("startup: setting startup and default style");
337  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
338    /* the style was set by the user: leave it alone */
339  } else {
340    owl_global_set_default_style(&g, "default");
341  }
342
343  /* zlog in if we need to */
344  if (owl_global_is_startuplogin(&g)) {
345    owl_function_debugmsg("startup: doing zlog in");
346    owl_zephyr_zlog_in();
347  }
348
349  owl_function_debugmsg("startup: set style for the view: %s", owl_global_get_default_style(&g));
350  s = owl_global_get_style_by_name(&g, owl_global_get_default_style(&g));
351  if(s)
352      owl_view_set_style(owl_global_get_current_view(&g), s);
353  else
354      owl_function_error("No such style: %s", owl_global_get_default_style(&g));
355
356  owl_function_debugmsg("startup: setting context interactive");
357  owl_context_set_interactive(owl_global_get_context(&g));
358
359  nexttimediff=10;
360  nexttime=time(NULL);
361
362
363  owl_select_add_timer(180, 180, owl_zephyr_buddycheck_timer, NULL, NULL);
364
365  /* If we ever deprecate the mainloop hook, remove this. */
366  owl_select_add_timer(0, 1, owl_perlconfig_mainloop, NULL, NULL);
367
368
369  owl_function_debugmsg("startup: entering main loop");
370  /* main loop */
371  while (1) {
372
373    /* if a resize has been scheduled, deal with it */
374    owl_global_resize(&g, 0, 0);
375
376    /* these are here in case a resize changes the windows */
377    msgwin=owl_global_get_curs_msgwin(&g);
378    recwin=owl_global_get_curs_recwin(&g);
379    sepwin=owl_global_get_curs_sepwin(&g);
380    typwin=owl_global_get_curs_typwin(&g);
381
382    followlast=owl_global_should_followlast(&g);
383
384    /* little hack */
385    now=time(NULL);
386    today=localtime(&now);
387    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
388      if (time(NULL)>nexttime) {
389        if (nexttimediff==1) {
390          nexttimediff=10;
391        } else {
392          nexttimediff=1;
393        }
394        nexttime+=nexttimediff;
395        owl_hack_animate();
396      }
397    }
398
399    /* Grab incoming messages. */
400    newmsgs=0;
401    while(owl_global_messagequeue_pending(&g)) {
402
403      m = owl_global_messagequeue_popmsg(&g);
404
405      if(owl_process_message(m))
406        newmsgs = 1;
407    }
408
409    /* follow the last message if we're supposed to */
410    if (newmsgs && followlast) {
411      owl_function_lastmsg_noredisplay();
412    }
413
414    /* do the newmsgproc thing */
415    if (newmsgs) {
416      owl_function_do_newmsgproc();
417    }
418   
419    /* redisplay if necessary */
420    /* this should be optimized to not run if the new messages won't be displayed */
421    if (newmsgs) {
422      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
423      sepbar(NULL);
424      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
425        owl_popwin_refresh(owl_global_get_popwin(&g));
426        /* TODO: this is a broken kludge */
427        if (owl_global_get_viewwin(&g)) {
428          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
429        }
430      }
431      owl_global_set_needrefresh(&g);
432    }
433
434    /* if a popwin just came up, refresh it */
435    pw=owl_global_get_popwin(&g);
436    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
437      owl_popwin_refresh(pw);
438      owl_popwin_no_needs_first_refresh(pw);
439      owl_global_set_needrefresh(&g);
440      /* TODO: this is a broken kludge */
441      if (owl_global_get_viewwin(&g)) {
442        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
443      }
444    }
445
446    /* update the terminal if we need to */
447    if (owl_global_is_needrefresh(&g)) {
448      /* leave the cursor in the appropriate window */
449      if (owl_global_is_typwin_active(&g)) {
450        owl_function_set_cursor(typwin);
451      } else {
452        owl_function_set_cursor(sepwin);
453      }
454      doupdate();
455      owl_global_set_noneedrefresh(&g);
456    }
457
458    /* select on FDs we know about. */
459    owl_select();
460
461    /* Log any error signals */
462    {
463      siginfo_t si;
464      int signum;
465      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
466        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %ld  errno: %d)",
467                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
468                           si.si_code, si.si_band, si.si_errno);
469      }
470    }
471
472  }
473}
474
475/*
476 * Process a new message passed to us on the message queue from some
477 * protocol. This includes adding it to the message list, updating the
478 * view and scrolling if appropriate, logging it, and so on.
479 *
480 * Either a pointer is kept to the message internally, or it is freed
481 * if unneeded. The caller no longer ``owns'' the message's memory.
482 *
483 * Returns 1 if the message was added to the message list, and 0 if it
484 * was ignored due to user settings or otherwise.
485 */
486int owl_process_message(owl_message *m) {
487  owl_filter *f;
488  /* if this message it on the puntlist, nuke it and continue */
489  if (owl_global_message_is_puntable(&g, m)) {
490    owl_message_free(m);
491    return 0;
492  }
493
494  /*  login or logout that should be ignored? */
495  if (owl_global_is_ignorelogins(&g)
496      && owl_message_is_loginout(m)) {
497    owl_message_free(m);
498    return 0;
499  }
500
501  if (!owl_global_is_displayoutgoing(&g)
502      && owl_message_is_direction_out(m)) {
503    owl_message_free(m);
504    return 0;
505  }
506
507  /* add it to the global list */
508  owl_messagelist_append_element(owl_global_get_msglist(&g), m);
509  /* add it to any necessary views; right now there's only the current view */
510  owl_view_consider_message(owl_global_get_current_view(&g), m);
511
512  if(owl_message_is_direction_in(m)) {
513    /* let perl know about it*/
514    owl_perlconfig_getmsg(m, NULL);
515
516    /* do we need to autoreply? */
517    if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
518      if (owl_message_is_type_zephyr(m)) {
519        owl_zephyr_zaway(m);
520      } else if (owl_message_is_type_aim(m)) {
521        if (owl_message_is_private(m)) {
522          owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
523        }
524      }
525    }
526
527    /* ring the bell if it's a personal */
528    if (!strcmp(owl_global_get_personalbell(&g), "on")) {
529      if (!owl_message_is_loginout(m) &&
530          !owl_message_is_mail(m) &&
531          owl_message_is_personal(m)) {
532        owl_function_beep();
533      }
534    } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
535      /* do nothing */
536    } else {
537      f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
538      if (f && owl_filter_message_match(f, m)) {
539        owl_function_beep();
540      }
541    }
542
543    /* if it matches the alert filter, do the alert action */
544    f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
545    if (f && owl_filter_message_match(f, m)) {
546      owl_function_command(owl_global_get_alert_action(&g));
547    }
548
549    /* if it's a zephyr login or logout, update the zbuddylist */
550    if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
551      if (owl_message_is_login(m)) {
552        owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
553      } else if (owl_message_is_logout(m)) {
554        owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
555      } else {
556        owl_function_error("Internal error: received login notice that is neither login nor logout");
557      }
558    }
559  }
560
561  /* let perl know about it */
562  owl_perlconfig_newmsg(m, NULL);
563  /* log the message if we need to */
564  owl_log_message(m);
565
566  return 1;
567}
568
569void owl_process_input(owl_dispatch *d)
570{
571  int ret;
572  owl_input j;
573  owl_popwin *pw;
574  owl_editwin *tw;
575  WINDOW *typwin;
576
577  typwin = owl_global_get_curs_typwin(&g);
578  while (1) {
579    j.ch = wgetch(typwin);
580    if (j.ch == ERR) return;
581   
582    owl_global_set_lastinputtime(&g, time(NULL));
583    pw=owl_global_get_popwin(&g);
584    tw=owl_global_get_typwin(&g);
585
586    j.uch = '\0';
587    if (j.ch >= KEY_MIN && j.ch <= KEY_MAX) {
588      /* This is a curses control character. */
589    }
590    else if (j.ch > 0x7f && j.ch < 0xfe) {
591      /* Pull in a full utf-8 character. */
592      int bytes, i;
593      char utf8buf[7];
594      memset(utf8buf, '\0', 7);
595     
596      utf8buf[0] = j.ch;
597     
598      if ((j.ch & 0xc0) && (~j.ch & 0x20)) bytes = 2;
599      else if ((j.ch & 0xe0) && (~j.ch & 0x10)) bytes = 3;
600      else if ((j.ch & 0xf0) && (~j.ch & 0x08)) bytes = 4;
601      else if ((j.ch & 0xf8) && (~j.ch & 0x04)) bytes = 5;
602      else if ((j.ch & 0xfc) && (~j.ch & 0x02)) bytes = 6;
603      else bytes = 1;
604     
605      for (i = 1; i < bytes; i++) {
606        int tmp =  wgetch(typwin);
607        /* If what we got was not a byte, or not a continuation byte */
608        if (tmp > 0xff || !(tmp & 0x80 && ~tmp & 0x40)) {
609          /* ill-formed UTF-8 code unit subsequence, put back the
610             char we just got. */
611          ungetch(tmp);
612          j.ch = ERR;
613          break;
614        }
615        utf8buf[i] = tmp;
616      }
617     
618      if (j.ch != ERR) {
619        if (g_utf8_validate(utf8buf, -1, NULL)) {
620          j.uch = g_utf8_get_char(utf8buf);
621        }
622        else {
623          j.ch = ERR;
624        }
625      }
626    }
627    else if (j.ch <= 0x7f) {
628      j.uch = j.ch;
629    }
630   
631    owl_global_set_lastinputtime(&g, time(NULL));
632    /* find and activate the current keymap.
633     * TODO: this should really get fixed by activating
634     * keymaps as we switch between windows...
635     */
636    if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
637      owl_context_set_popless(owl_global_get_context(&g), 
638                              owl_global_get_viewwin(&g));
639      owl_function_activate_keymap("popless");
640    } else if (owl_global_is_typwin_active(&g) 
641               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
642      /*
643        owl_context_set_editline(owl_global_get_context(&g), tw);
644        owl_function_activate_keymap("editline");
645      */
646    } else if (owl_global_is_typwin_active(&g) 
647               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
648      owl_context_set_editmulti(owl_global_get_context(&g), tw);
649      owl_function_activate_keymap("editmulti");
650    } else {
651      owl_context_set_recv(owl_global_get_context(&g));
652      owl_function_activate_keymap("recv");
653    }
654    /* now actually handle the keypress */
655    ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
656    if (ret!=0 && ret!=1) {
657      owl_function_makemsg("Unable to handle keypress");
658    }
659  }
660}
661
662void sig_handler(int sig, siginfo_t *si, void *data)
663{
664  if (sig==SIGWINCH) {
665    /* we can't inturrupt a malloc here, so it just sets a flag
666     * schedulding a resize for later
667     */
668    owl_function_resize();
669  } else if (sig==SIGPIPE || sig==SIGCHLD) {
670    /* Set a flag and some info that we got the sigpipe
671     * so we can record that we got it and why... */
672    owl_global_set_errsignal(&g, sig, si);
673  } else if (sig==SIGTERM || sig==SIGHUP) {
674    owl_function_quit();
675  }
676}
677
678void usage()
679{
680  fprintf(stderr, "Barnowl version %s\n", OWL_VERSION_STRING);
681  fprintf(stderr, "Usage: barnowl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-s <confdir>] [-t <ttyname>]\n");
682  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
683  fprintf(stderr, "  -d      enable debugging\n");
684  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
685  fprintf(stderr, "  -v      print the Barnowl version number and exit\n");
686  fprintf(stderr, "  -h      print this help message\n");
687  fprintf(stderr, "  -c      specify an alternate config file\n");
688  fprintf(stderr, "  -s      specify an alternate config dir (default ~/.owl)\n");
689  fprintf(stderr, "  -t      set the tty name\n");
690}
691
692#if OWL_STDERR_REDIR
693
694/* Replaces stderr with a pipe so that we can read from it.
695 * Returns the fd of the pipe from which stderr can be read. */
696int stderr_replace(void)
697{
698  int pipefds[2];
699  if (0 != pipe(pipefds)) {
700    perror("pipe");
701    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
702    return -1;
703  }
704    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
705  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
706    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
707    perror("dup2");
708    return -1;
709  }
710  return pipefds[0];
711}
712
713/* Sends stderr (read from rfd) messages to the error console */
714void stderr_redirect_handler(owl_dispatch *d)
715{
716  int navail, bread;
717  char buf[4096];
718  int rfd = d->fd;
719  if (rfd<0) return;
720  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
721    return;
722  }
723  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
724  if (navail <= 0) return;
725  if (navail > sizeof(buf)-1) {
726    navail = sizeof(buf)-1;
727  }
728  bread = read(rfd, buf, navail);
729  if (buf[navail-1] != '\0') {
730    buf[navail] = '\0';
731  }
732  owl_function_error("[stderr]\n%s", buf);
733}
734
735#endif /* OWL_STDERR_REDIR */
736
737void owl_zephyr_buddycheck_timer(owl_timer *t, void *data)
738{
739  if (owl_global_is_pseudologins(&g)) {
740    owl_function_debugmsg("Doing zephyr buddy check");
741    owl_function_zephyr_buddy_check(1);
742  }
743}
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