source: owl.c @ e6a4dd5

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Last change on this file since e6a4dd5 was 5657d53, checked in by Alejandro R. Sedeño <asedeno@mit.edu>, 13 years ago
Process zephyr prior to owl_select(). [more] Some libzephyr functions, such as ZLocateUser(), ZSetLocation() and ZUnsetLocation() call Z_WaitForNotice(), which has an internal select loop on the zephyr FD. It may leave pending zephyrs unprocessed, and the FD won't have anything to be read. This can leave a zephyr in the queue until the next zephyr comes in. Before calling into owl_select() loop, call owl_zephyr_process_events() and deal with any pending zephyrs. ZPending is quick, and we usually shouldn't have anything to process here anyhow. reported by: kretch
  • Property mode set to 100644
File size: 22.8 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 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  owl_function_debugmsg("startup: set style for the view: %s", owl_global_get_default_style(&g));
344  s = owl_global_get_style_by_name(&g, owl_global_get_default_style(&g));
345  if(s)
346      owl_view_set_style(owl_global_get_current_view(&g), s);
347  else
348      owl_function_error("No such style: %s", owl_global_get_default_style(&g));
349
350  owl_function_debugmsg("startup: setting context interactive");
351  owl_context_set_interactive(owl_global_get_context(&g));
352
353  nexttimediff=10;
354  nexttime=time(NULL);
355
356
357  owl_select_add_timer(180, 180, owl_zephyr_buddycheck_timer, NULL, NULL);
358
359  /* If we ever deprecate the mainloop hook, remove this. */
360  owl_select_add_timer(0, 1, owl_perlconfig_mainloop, NULL, NULL);
361
362
363  owl_function_debugmsg("startup: entering main loop");
364  /* main loop */
365  while (1) {
366
367    /* if a resize has been scheduled, deal with it */
368    owl_global_resize(&g, 0, 0);
369
370    /* these are here in case a resize changes the windows */
371    msgwin=owl_global_get_curs_msgwin(&g);
372    recwin=owl_global_get_curs_recwin(&g);
373    sepwin=owl_global_get_curs_sepwin(&g);
374    typwin=owl_global_get_curs_typwin(&g);
375
376    followlast=owl_global_should_followlast(&g);
377
378    /* little hack */
379    now=time(NULL);
380    today=localtime(&now);
381    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
382      if (time(NULL)>nexttime) {
383        if (nexttimediff==1) {
384          nexttimediff=10;
385        } else {
386          nexttimediff=1;
387        }
388        nexttime+=nexttimediff;
389        owl_hack_animate();
390      }
391    }
392
393    /* Grab incoming messages. */
394    newmsgs=0;
395    while(owl_global_messagequeue_pending(&g)) {
396
397      m = owl_global_messagequeue_popmsg(&g);
398
399      if(owl_process_message(m))
400        newmsgs = 1;
401    }
402
403    /* follow the last message if we're supposed to */
404    if (newmsgs && followlast) {
405      owl_function_lastmsg_noredisplay();
406    }
407
408    /* do the newmsgproc thing */
409    if (newmsgs) {
410      owl_function_do_newmsgproc();
411    }
412   
413    /* redisplay if necessary */
414    /* this should be optimized to not run if the new messages won't be displayed */
415    if (newmsgs) {
416      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
417      sepbar(NULL);
418      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
419        owl_popwin_refresh(owl_global_get_popwin(&g));
420        /* TODO: this is a broken kludge */
421        if (owl_global_get_viewwin(&g)) {
422          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
423        }
424      }
425      owl_global_set_needrefresh(&g);
426    }
427
428    /* if a popwin just came up, refresh it */
429    pw=owl_global_get_popwin(&g);
430    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
431      owl_popwin_refresh(pw);
432      owl_popwin_no_needs_first_refresh(pw);
433      owl_global_set_needrefresh(&g);
434      /* TODO: this is a broken kludge */
435      if (owl_global_get_viewwin(&g)) {
436        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
437      }
438    }
439
440    /* update the terminal if we need to */
441    if (owl_global_is_needrefresh(&g)) {
442      /* leave the cursor in the appropriate window */
443      if (owl_global_is_typwin_active(&g)) {
444        owl_function_set_cursor(typwin);
445      } else {
446        owl_function_set_cursor(sepwin);
447      }
448      doupdate();
449      owl_global_set_noneedrefresh(&g);
450    }
451
452    /* Some calls into libzephyr call Z_WaitForNotice(), which has its
453     * own select loop and may leave zephyrs on the queue. Check for
454     * them now, and process any we find. */
455    owl_zephyr_process_events(NULL);
456
457    /* select on FDs we know about. */
458    owl_select();
459
460    /* Log any error signals */
461    {
462      siginfo_t si;
463      int signum;
464      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
465        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %ld  errno: %d)",
466                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
467                           si.si_code, si.si_band, si.si_errno);
468      }
469    }
470
471  }
472}
473
474/*
475 * Process a new message passed to us on the message queue from some
476 * protocol. This includes adding it to the message list, updating the
477 * view and scrolling if appropriate, logging it, and so on.
478 *
479 * Either a pointer is kept to the message internally, or it is freed
480 * if unneeded. The caller no longer ``owns'' the message's memory.
481 *
482 * Returns 1 if the message was added to the message list, and 0 if it
483 * was ignored due to user settings or otherwise.
484 */
485int owl_process_message(owl_message *m) {
486  owl_filter *f;
487  /* if this message it on the puntlist, nuke it and continue */
488  if (owl_global_message_is_puntable(&g, m)) {
489    owl_message_free(m);
490    return 0;
491  }
492
493  /*  login or logout that should be ignored? */
494  if (owl_global_is_ignorelogins(&g)
495      && owl_message_is_loginout(m)) {
496    owl_message_free(m);
497    return 0;
498  }
499
500  if (!owl_global_is_displayoutgoing(&g)
501      && owl_message_is_direction_out(m)) {
502    owl_message_free(m);
503    return 0;
504  }
505
506  /* add it to the global list */
507  owl_messagelist_append_element(owl_global_get_msglist(&g), m);
508  /* add it to any necessary views; right now there's only the current view */
509  owl_view_consider_message(owl_global_get_current_view(&g), m);
510
511  if(owl_message_is_direction_in(m)) {
512    /* let perl know about it*/
513    owl_perlconfig_getmsg(m, NULL);
514
515    /* do we need to autoreply? */
516    if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
517      if (owl_message_is_type_zephyr(m)) {
518        owl_zephyr_zaway(m);
519      } else if (owl_message_is_type_aim(m)) {
520        if (owl_message_is_private(m)) {
521          owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
522        }
523      }
524    }
525
526    /* ring the bell if it's a personal */
527    if (!strcmp(owl_global_get_personalbell(&g), "on")) {
528      if (!owl_message_is_loginout(m) &&
529          !owl_message_is_mail(m) &&
530          owl_message_is_personal(m)) {
531        owl_function_beep();
532      }
533    } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
534      /* do nothing */
535    } else {
536      f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
537      if (f && owl_filter_message_match(f, m)) {
538        owl_function_beep();
539      }
540    }
541
542    /* if it matches the alert filter, do the alert action */
543    f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
544    if (f && owl_filter_message_match(f, m)) {
545      owl_function_command(owl_global_get_alert_action(&g));
546    }
547
548    /* if it's a zephyr login or logout, update the zbuddylist */
549    if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
550      if (owl_message_is_login(m)) {
551        owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
552      } else if (owl_message_is_logout(m)) {
553        owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
554      } else {
555        owl_function_error("Internal error: received login notice that is neither login nor logout");
556      }
557    }
558  }
559
560  /* let perl know about it */
561  owl_perlconfig_newmsg(m, NULL);
562  /* log the message if we need to */
563  owl_log_message(m);
564
565  return 1;
566}
567
568void owl_process_input(owl_dispatch *d)
569{
570  int ret;
571  owl_input j;
572  owl_popwin *pw;
573  owl_editwin *tw;
574  WINDOW *typwin;
575
576  typwin = owl_global_get_curs_typwin(&g);
577  while (1) {
578    j.ch = wgetch(typwin);
579    if (j.ch == ERR) return;
580   
581    owl_global_set_lastinputtime(&g, time(NULL));
582    pw=owl_global_get_popwin(&g);
583    tw=owl_global_get_typwin(&g);
584
585    j.uch = '\0';
586    if (j.ch >= KEY_MIN && j.ch <= KEY_MAX) {
587      /* This is a curses control character. */
588    }
589    else if (j.ch > 0x7f && j.ch < 0xfe) {
590      /* Pull in a full utf-8 character. */
591      int bytes, i;
592      char utf8buf[7];
593      memset(utf8buf, '\0', 7);
594     
595      utf8buf[0] = j.ch;
596     
597      if ((j.ch & 0xc0) && (~j.ch & 0x20)) bytes = 2;
598      else if ((j.ch & 0xe0) && (~j.ch & 0x10)) bytes = 3;
599      else if ((j.ch & 0xf0) && (~j.ch & 0x08)) bytes = 4;
600      else if ((j.ch & 0xf8) && (~j.ch & 0x04)) bytes = 5;
601      else if ((j.ch & 0xfc) && (~j.ch & 0x02)) bytes = 6;
602      else bytes = 1;
603     
604      for (i = 1; i < bytes; i++) {
605        int tmp =  wgetch(typwin);
606        /* If what we got was not a byte, or not a continuation byte */
607        if (tmp > 0xff || !(tmp & 0x80 && ~tmp & 0x40)) {
608          /* ill-formed UTF-8 code unit subsequence, put back the
609             char we just got. */
610          ungetch(tmp);
611          j.ch = ERR;
612          break;
613        }
614        utf8buf[i] = tmp;
615      }
616     
617      if (j.ch != ERR) {
618        if (g_utf8_validate(utf8buf, -1, NULL)) {
619          j.uch = g_utf8_get_char(utf8buf);
620        }
621        else {
622          j.ch = ERR;
623        }
624      }
625    }
626    else if (j.ch <= 0x7f) {
627      j.uch = j.ch;
628    }
629   
630    owl_global_set_lastinputtime(&g, time(NULL));
631    /* find and activate the current keymap.
632     * TODO: this should really get fixed by activating
633     * keymaps as we switch between windows...
634     */
635    if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
636      owl_context_set_popless(owl_global_get_context(&g), 
637                              owl_global_get_viewwin(&g));
638      owl_function_activate_keymap("popless");
639    } else if (owl_global_is_typwin_active(&g) 
640               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
641      /*
642        owl_context_set_editline(owl_global_get_context(&g), tw);
643        owl_function_activate_keymap("editline");
644      */
645    } else if (owl_global_is_typwin_active(&g) 
646               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
647      owl_context_set_editmulti(owl_global_get_context(&g), tw);
648      owl_function_activate_keymap("editmulti");
649    } else {
650      owl_context_set_recv(owl_global_get_context(&g));
651      owl_function_activate_keymap("recv");
652    }
653    /* now actually handle the keypress */
654    ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
655    if (ret!=0 && ret!=1) {
656      owl_function_makemsg("Unable to handle keypress");
657    }
658  }
659}
660
661void sig_handler(int sig, siginfo_t *si, void *data)
662{
663  if (sig==SIGWINCH) {
664    /* we can't inturrupt a malloc here, so it just sets a flag
665     * schedulding a resize for later
666     */
667    owl_function_resize();
668  } else if (sig==SIGPIPE || sig==SIGCHLD) {
669    /* Set a flag and some info that we got the sigpipe
670     * so we can record that we got it and why... */
671    owl_global_set_errsignal(&g, sig, si);
672  } else if (sig==SIGTERM || sig==SIGHUP) {
673    owl_function_quit();
674  }
675}
676
677void usage()
678{
679  fprintf(stderr, "Barnowl version %s\n", OWL_VERSION_STRING);
680  fprintf(stderr, "Usage: barnowl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-s <confdir>] [-t <ttyname>]\n");
681  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
682  fprintf(stderr, "  -d      enable debugging\n");
683  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
684  fprintf(stderr, "  -v      print the Barnowl version number and exit\n");
685  fprintf(stderr, "  -h      print this help message\n");
686  fprintf(stderr, "  -c      specify an alternate config file\n");
687  fprintf(stderr, "  -s      specify an alternate config dir (default ~/.owl)\n");
688  fprintf(stderr, "  -t      set the tty name\n");
689}
690
691#if OWL_STDERR_REDIR
692
693/* Replaces stderr with a pipe so that we can read from it.
694 * Returns the fd of the pipe from which stderr can be read. */
695int stderr_replace(void)
696{
697  int pipefds[2];
698  if (0 != pipe(pipefds)) {
699    perror("pipe");
700    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
701    return -1;
702  }
703    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
704  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
705    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
706    perror("dup2");
707    return -1;
708  }
709  return pipefds[0];
710}
711
712/* Sends stderr (read from rfd) messages to the error console */
713void stderr_redirect_handler(owl_dispatch *d)
714{
715  int navail, bread;
716  char buf[4096];
717  int rfd = d->fd;
718  char *err;
719
720  if (rfd<0) return;
721  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
722    return;
723  }
724  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
725  if (navail <= 0) return;
726  if (navail > sizeof(buf)-1) {
727    navail = sizeof(buf)-1;
728  }
729  bread = read(rfd, buf, navail);
730  if (buf[navail-1] != '\0') {
731    buf[navail] = '\0';
732  }
733
734  err = owl_sprintf("[stderr]\n%s", buf);
735
736  owl_function_log_err(err);
737}
738
739#endif /* OWL_STDERR_REDIR */
740
741void owl_zephyr_buddycheck_timer(owl_timer *t, void *data)
742{
743  if (owl_global_is_pseudologins(&g)) {
744    owl_function_debugmsg("Doing zephyr buddy check");
745    owl_function_zephyr_buddy_check(1);
746  }
747}
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