source: owl.c @ 924f7cd

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Last change on this file since 924f7cd was 924f7cd, checked in by Nelson Elhage <nelhage@mit.edu>, 12 years ago
Pull data from stderr in larger chunks at a time.
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1/*  Copyright (c) 2006-2008 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#if OWL_STDERR_REDIR
24#ifdef HAVE_SYS_IOCTL_H
25#include <sys/ioctl.h>
26#endif
27#ifdef HAVE_SYS_FILIO_H
28#include <sys/filio.h>
29#endif
30int stderr_replace(void);
31#endif
32
33#define STDIN 0
34
35static const char fileIdent[] = "$Id$";
36
37owl_global g;
38
39int main(int argc, char **argv, char **env)
40{
41  WINDOW *recwin, *sepwin, *typwin, *msgwin;
42  owl_editwin *tw;
43  owl_popwin *pw;
44  int ret, initialsubs, debug, argcsave, followlast;
45  int newmsgs, nexttimediff;
46  struct sigaction sigact;
47  char *configfile, *tty, *perlout, *perlerr, **argvsave, buff[LINE], startupmsg[LINE];
48  char *confdir;
49  owl_filter *f;
50  owl_style *s;
51  time_t nexttime, now;
52  struct tm *today;
53  char *dir;
54  struct termios tio;
55  owl_message *m;
56
57  if (!GLIB_CHECK_VERSION (2, 12, 0))
58    g_error ("GLib version 2.12.0 or above is needed.");
59
60  argcsave=argc;
61  argvsave=argv;
62  configfile=NULL;
63  confdir = NULL;
64  tty=NULL;
65  debug=0;
66  initialsubs=1;
67
68  setlocale(LC_ALL, "");
69 
70  if (argc>0) {
71    argv++;
72    argc--;
73  }
74  while (argc>0) {
75    if (!strcmp(argv[0], "-n")) {
76      initialsubs=0;
77      argv++;
78      argc--;
79    } else if (!strcmp(argv[0], "-c")) {
80      if (argc<2) {
81        fprintf(stderr, "Too few arguments to -c\n");
82        usage();
83        exit(1);
84      }
85      configfile=argv[1];
86      argv+=2;
87      argc-=2;
88    } else if (!strcmp(argv[0], "-t")) {
89      if (argc<2) {
90        fprintf(stderr, "Too few arguments to -t\n");
91        usage();
92        exit(1);
93      }
94      tty=argv[1];
95      argv+=2;
96      argc-=2;
97    } else if (!strcmp(argv[0], "-s")){
98      if (argc<2) {
99        fprintf(stderr, "Too few arguments to -s\n");
100        usage();
101        exit(1);
102      }
103      confdir = argv[1];
104      argv+=2;
105      argc-=2;
106    } else if (!strcmp(argv[0], "-d")) {
107      debug=1;
108      argv++;
109      argc--;
110    } else if (!strcmp(argv[0], "-D")) {
111      debug=1;
112      unlink(OWL_DEBUG_FILE);
113      argv++;
114      argc--;
115    } else if (!strcmp(argv[0], "-v")) {
116      printf("This is barnowl version %s\n", OWL_VERSION_STRING);
117      exit(0);
118    } else {
119      fprintf(stderr, "Unknown argument\n");
120      usage();       
121      exit(1);
122    }
123  }
124
125  owl_function_debugmsg("startup: Finished parsing arguments");
126
127  /* signal handler */
128  /*sigact.sa_handler=sig_handler;*/
129  sigact.sa_sigaction=sig_handler;
130  sigemptyset(&sigact.sa_mask);
131  sigact.sa_flags=SA_SIGINFO;
132  sigaction(SIGWINCH, &sigact, NULL);
133  sigaction(SIGALRM, &sigact, NULL);
134  sigaction(SIGPIPE, &sigact, NULL);
135  sigaction(SIGTERM, &sigact, NULL);
136  sigaction(SIGHUP, &sigact, NULL);
137
138  /* save initial terminal settings */
139  tcgetattr(0, owl_global_get_startup_tio(&g));
140
141  /* turn ISTRIP off */
142  tcgetattr(0, &tio);
143  tio.c_iflag &= ~ISTRIP;
144  tcsetattr(0, TCSAFLUSH, &tio);
145
146  /* screen init */
147  if (!getenv("TERMINFO")) {
148    owl_function_debugmsg("startup: Not setting TERMINFO");
149  } else {
150    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
151  }
152  initscr();
153  start_color();
154#ifdef HAVE_USE_DEFAULT_COLORS
155  use_default_colors();
156#endif
157  raw();
158  noecho();
159
160  /* define simple color pairs */
161  if (has_colors() && COLOR_PAIRS>=8) {
162    int bg = COLOR_BLACK;
163#ifdef HAVE_USE_DEFAULT_COLORS
164    bg = -1;
165#endif
166    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   bg);
167    init_pair(OWL_COLOR_RED,     COLOR_RED,     bg);
168    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   bg);
169    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  bg);
170    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    bg);
171    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, bg);
172    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    bg);
173    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   bg);
174  }
175
176  /* owl global init */
177  owl_global_init(&g);
178  if (debug) owl_global_set_debug_on(&g);
179  if (confdir) owl_global_set_confdir(&g, confdir);
180  owl_function_debugmsg("startup: first available debugging message");
181  owl_global_set_startupargs(&g, argcsave, argvsave);
182  owl_global_set_haveaim(&g);
183
184  /* prepare stdin dispatch */
185  {
186    owl_dispatch *d = owl_malloc(sizeof(owl_dispatch));
187    d->fd = STDIN;
188    d->cfunc = &owl_process_input;
189    d->destroy = NULL;
190    owl_select_add_dispatch(d);
191  }
192 
193#ifdef HAVE_LIBZEPHYR
194  /* zephyr init */
195  ret=owl_zephyr_initialize();
196  if (!ret) {
197    owl_dispatch *d = owl_malloc(sizeof(owl_dispatch));
198    d->fd = ZGetFD();
199    d->cfunc = &owl_zephyr_process_events;
200    d->destroy = NULL;
201    owl_select_add_dispatch(d);
202    owl_global_set_havezephyr(&g);
203  }
204
205#endif
206
207#if OWL_STDERR_REDIR
208  /* Do this only after we've started curses up... */
209  {
210    owl_dispatch *d = owl_malloc(sizeof(owl_dispatch));
211    owl_function_debugmsg("startup: doing stderr redirection");
212    d->fd = stderr_replace();
213    d->cfunc = stderr_redirect_handler;
214    d->destroy = NULL;
215    owl_select_add_dispatch(d);
216  }
217#endif
218
219  /* create the owl directory, in case it does not exist */
220  owl_function_debugmsg("startup: creating owl directory, if not present");
221  dir=owl_global_get_confdir(&g);
222  mkdir(dir, S_IRWXU);
223
224  /* set the tty, either from the command line, or by figuring it out */
225  owl_function_debugmsg("startup: setting tty name");
226  if (tty) {
227    owl_global_set_tty(&g, tty);
228  } else {
229    owl_global_set_tty(&g, owl_util_get_default_tty());
230  }
231
232  /* Initialize perl */
233  owl_function_debugmsg("startup: processing config file");
234  owl_context_set_readconfig(owl_global_get_context(&g));
235  perlerr=owl_perlconfig_initperl(configfile);
236  if (perlerr) {
237    endwin();
238    owl_function_error("Internal perl error: %s\n", perlerr);
239    fprintf(stderr, "Internal perl error: %s\n", perlerr);
240    fflush(stderr);
241    printf("Internal perl error: %s\n", perlerr);
242    fflush(stdout);
243    exit(1);
244  }
245
246  /* setup the default filters */
247  /* the personal filter will need to change again when AIM chat's are
248   *  included.  Also, there should be an %aimme% */
249  owl_function_debugmsg("startup: creating default filters");
250  f=owl_malloc(sizeof(owl_filter));
251  owl_filter_init_fromstring(f, "personal", "isprivate ^true$ and ( not type ^zephyr$"
252                             " or ( class ^message and"
253                             " ( instance ^personal$ or instance ^urgent$ ) ) )");
254  owl_list_append_element(owl_global_get_filterlist(&g), f);
255
256  f=owl_malloc(sizeof(owl_filter));
257  owl_filter_init_fromstring(f, "wordwrap", "not ( type ^admin$ or type ^zephyr$ ) ");
258  owl_list_append_element(owl_global_get_filterlist(&g), f);
259
260  f=owl_malloc(sizeof(owl_filter));
261  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
262  owl_list_append_element(owl_global_get_filterlist(&g), f);
263
264  f=owl_malloc(sizeof(owl_filter));
265  owl_filter_init_fromstring(f, "ping", "opcode ^ping$");
266  owl_list_append_element(owl_global_get_filterlist(&g), f);
267
268  f=owl_malloc(sizeof(owl_filter));
269  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
270  owl_list_append_element(owl_global_get_filterlist(&g), f);
271
272  f=owl_malloc(sizeof(owl_filter));
273  owl_filter_init_fromstring(f, "login", "not login ^none$");
274  owl_list_append_element(owl_global_get_filterlist(&g), f);
275
276  f=owl_malloc(sizeof(owl_filter));
277  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
278  owl_list_append_element(owl_global_get_filterlist(&g), f);
279
280  f=owl_malloc(sizeof(owl_filter));
281  owl_filter_init_fromstring(f, "out", "direction ^out$");
282  owl_list_append_element(owl_global_get_filterlist(&g), f);
283
284  f=owl_malloc(sizeof(owl_filter));
285  owl_filter_init_fromstring(f, "aim", "type ^aim$");
286  owl_list_append_element(owl_global_get_filterlist(&g), f);
287
288  f=owl_malloc(sizeof(owl_filter));
289  owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$");
290  owl_list_append_element(owl_global_get_filterlist(&g), f);
291
292  f=owl_malloc(sizeof(owl_filter));
293  owl_filter_init_fromstring(f, "none", "false");
294  owl_list_append_element(owl_global_get_filterlist(&g), f);
295
296  f=owl_malloc(sizeof(owl_filter));
297  owl_filter_init_fromstring(f, "all", "true");
298  owl_list_append_element(owl_global_get_filterlist(&g), f);
299
300  /* set the current view */
301  owl_function_debugmsg("startup: setting the current view");
302  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
303
304  /* AIM init */
305  owl_function_debugmsg("startup: doing AIM initialization");
306  owl_aim_init();
307
308  /* execute the startup function in the configfile */
309  owl_function_debugmsg("startup: executing perl startup, if applicable");
310  perlout = owl_perlconfig_execute("BarnOwl::Hooks::_startup();");
311  if (perlout) owl_free(perlout);
312
313  /* hold on to the window names for convenience */
314  msgwin=owl_global_get_curs_msgwin(&g);
315  recwin=owl_global_get_curs_recwin(&g);
316  sepwin=owl_global_get_curs_sepwin(&g);
317  typwin=owl_global_get_curs_typwin(&g);
318  tw=owl_global_get_typwin(&g);
319
320  /* welcome message */
321  owl_function_debugmsg("startup: creating splash message");
322  strcpy(startupmsg, "-----------------------------------------------------------------------\n");
323  sprintf(buff,      "Welcome to barnowl version %s.  Press 'h' for on-line help.            \n", OWL_VERSION_STRING);
324  strcat(startupmsg, buff);
325  strcat(startupmsg, "To see a quick introduction, type ':show quickstart'.                  \n");
326  strcat(startupmsg, "                                                                       \n");
327  strcat(startupmsg, "BarnOwl is free software. Type ':show license' for more                \n");
328  strcat(startupmsg, "information.                                                     ^ ^   \n");
329  strcat(startupmsg, "                                                                 OvO   \n");
330  strcat(startupmsg, "Please report any bugs or suggestions to bug-barnowl@mit.edu    (   )  \n");
331  strcat(startupmsg, "-----------------------------------------------------------------m-m---\n");
332  owl_function_adminmsg("", startupmsg);
333  sepbar(NULL);
334
335  /* process the startup file */
336  owl_function_debugmsg("startup: processing startup file");
337  owl_function_source(NULL);
338
339  wrefresh(sepwin);
340
341  /* load zephyr subs */
342  if (initialsubs) {
343    int ret2;
344    owl_function_debugmsg("startup: loading initial zephyr subs");
345
346    /* load default subscriptions */
347    ret=owl_zephyr_loaddefaultsubs();
348   
349    /* load subscriptions from subs file */
350    ret2=owl_zephyr_loadsubs(NULL, 0);
351
352    if (ret || ret2) {
353      owl_function_adminmsg("", "Error loading zephyr subscriptions");
354    } else if (ret2!=-1) {
355      owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
356    }
357
358    /* load login subscriptions */
359    if (owl_global_is_loginsubs(&g)) {
360      owl_function_debugmsg("startup: loading login subs");
361      owl_function_loadloginsubs(NULL);
362    }
363  }
364
365  /* First buddy check to sync the list without notifications */
366  owl_function_debugmsg("startup: doing initial zephyr buddy check");
367  /* owl_function_zephyr_buddy_check(0); */
368
369  /* set the startup and default style, based on userclue and presence of a
370   * formatting function */
371  owl_function_debugmsg("startup: setting startup and default style");
372  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
373    /* the style was set by the user: leave it alone */
374  } else {
375    owl_global_set_default_style(&g, "default");
376  }
377
378  /* zlog in if we need to */
379  if (owl_global_is_startuplogin(&g)) {
380    owl_function_debugmsg("startup: doing zlog in");
381    owl_zephyr_zlog_in();
382  }
383
384  owl_function_debugmsg("startup: set style for the view: %s", owl_global_get_default_style(&g));
385  s = owl_global_get_style_by_name(&g, owl_global_get_default_style(&g));
386  if(s)
387      owl_view_set_style(owl_global_get_current_view(&g), s);
388  else
389      owl_function_error("No such style: %s", owl_global_get_default_style(&g));
390
391  owl_function_debugmsg("startup: setting context interactive");
392  owl_context_set_interactive(owl_global_get_context(&g));
393
394  nexttimediff=10;
395  nexttime=time(NULL);
396
397
398  owl_select_add_timer(180, 180, owl_zephyr_buddycheck_timer, NULL, NULL);
399
400  /* If we ever deprecate the mainloop hook, remove this. */
401  owl_select_add_timer(0, 1, owl_perlconfig_mainloop, NULL, NULL);
402
403
404  owl_function_debugmsg("startup: entering main loop");
405  /* main loop */
406  while (1) {
407
408    /* if a resize has been scheduled, deal with it */
409    owl_global_resize(&g, 0, 0);
410
411    /* these are here in case a resize changes the windows */
412    msgwin=owl_global_get_curs_msgwin(&g);
413    recwin=owl_global_get_curs_recwin(&g);
414    sepwin=owl_global_get_curs_sepwin(&g);
415    typwin=owl_global_get_curs_typwin(&g);
416
417    followlast=owl_global_should_followlast(&g);
418
419    /* little hack */
420    now=time(NULL);
421    today=localtime(&now);
422    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
423      if (time(NULL)>nexttime) {
424        if (nexttimediff==1) {
425          nexttimediff=10;
426        } else {
427          nexttimediff=1;
428        }
429        nexttime+=nexttimediff;
430        owl_hack_animate();
431      }
432    }
433
434    /* Grab incoming messages. */
435    newmsgs=0;
436    while(owl_global_messagequeue_pending(&g)) {
437
438      m = owl_global_messagequeue_popmsg(&g);
439
440      if(owl_process_message(m))
441        newmsgs = 1;
442    }
443
444    /* follow the last message if we're supposed to */
445    if (newmsgs && followlast) {
446      owl_function_lastmsg_noredisplay();
447    }
448
449    /* do the newmsgproc thing */
450    if (newmsgs) {
451      owl_function_do_newmsgproc();
452    }
453   
454    /* redisplay if necessary */
455    /* this should be optimized to not run if the new messages won't be displayed */
456    if (newmsgs) {
457      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
458      sepbar(NULL);
459      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
460        owl_popwin_refresh(owl_global_get_popwin(&g));
461        /* TODO: this is a broken kludge */
462        if (owl_global_get_viewwin(&g)) {
463          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
464        }
465      }
466      owl_global_set_needrefresh(&g);
467    }
468
469    /* if a popwin just came up, refresh it */
470    pw=owl_global_get_popwin(&g);
471    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
472      owl_popwin_refresh(pw);
473      owl_popwin_no_needs_first_refresh(pw);
474      owl_global_set_needrefresh(&g);
475      /* TODO: this is a broken kludge */
476      if (owl_global_get_viewwin(&g)) {
477        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
478      }
479    }
480
481    /* update the terminal if we need to */
482    if (owl_global_is_needrefresh(&g)) {
483      /* leave the cursor in the appropriate window */
484      if (owl_global_is_typwin_active(&g)) {
485        owl_function_set_cursor(typwin);
486      } else {
487        owl_function_set_cursor(sepwin);
488      }
489      doupdate();
490      owl_global_set_noneedrefresh(&g);
491    }
492
493    /* select on FDs we know about. */
494    owl_select();
495
496    /* Log any error signals */
497    {
498      siginfo_t si;
499      int signum;
500      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
501        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %ld  errno: %d)",
502                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
503                           si.si_code, si.si_band, si.si_errno);
504      }
505    }
506
507  }
508}
509
510/*
511 * Process a new message passed to us on the message queue from some
512 * protocol. This includes adding it to the message list, updating the
513 * view and scrolling if appropriate, logging it, and so on.
514 *
515 * Either a pointer is kept to the message internally, or it is freed
516 * if unneeded. The caller no longer ``owns'' the message's memory.
517 *
518 * Returns 1 if the message was added to the message list, and 0 if it
519 * was ignored due to user settings or otherwise.
520 */
521int owl_process_message(owl_message *m) {
522  owl_filter *f;
523  /* if this message it on the puntlist, nuke it and continue */
524  if (owl_global_message_is_puntable(&g, m)) {
525    owl_message_free(m);
526    return 0;
527  }
528
529  /*  login or logout that should be ignored? */
530  if (owl_global_is_ignorelogins(&g)
531      && owl_message_is_loginout(m)) {
532    owl_message_free(m);
533    return 0;
534  }
535
536  if (!owl_global_is_displayoutgoing(&g)
537      && owl_message_is_direction_out(m)) {
538    owl_message_free(m);
539    return 0;
540  }
541
542  /* add it to the global list */
543  owl_messagelist_append_element(owl_global_get_msglist(&g), m);
544  /* add it to any necessary views; right now there's only the current view */
545  owl_view_consider_message(owl_global_get_current_view(&g), m);
546
547  if(owl_message_is_direction_in(m)) {
548    /* let perl know about it*/
549    owl_perlconfig_getmsg(m, NULL);
550
551    /* do we need to autoreply? */
552    if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
553      if (owl_message_is_type_zephyr(m)) {
554        owl_zephyr_zaway(m);
555      } else if (owl_message_is_type_aim(m)) {
556        if (owl_message_is_private(m)) {
557          owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
558        }
559      }
560    }
561
562    /* ring the bell if it's a personal */
563    if (!strcmp(owl_global_get_personalbell(&g), "on")) {
564      if (!owl_message_is_loginout(m) &&
565          !owl_message_is_mail(m) &&
566          owl_message_is_personal(m)) {
567        owl_function_beep();
568      }
569    } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
570      /* do nothing */
571    } else {
572      f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
573      if (f && owl_filter_message_match(f, m)) {
574        owl_function_beep();
575      }
576    }
577
578    /* if it matches the alert filter, do the alert action */
579    f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
580    if (f && owl_filter_message_match(f, m)) {
581      owl_function_command(owl_global_get_alert_action(&g));
582    }
583
584    /* if it's a zephyr login or logout, update the zbuddylist */
585    if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
586      if (owl_message_is_login(m)) {
587        owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
588      } else if (owl_message_is_logout(m)) {
589        owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
590      } else {
591        owl_function_error("Internal error: received login notice that is neither login nor logout");
592      }
593    }
594  }
595
596  /* let perl know about it */
597  owl_perlconfig_newmsg(m, NULL);
598  /* log the message if we need to */
599  owl_log_message(m);
600
601  return 1;
602}
603
604void owl_process_input(owl_dispatch *d)
605{
606  int ret;
607  owl_input j;
608  owl_popwin *pw;
609  owl_editwin *tw;
610  WINDOW *typwin;
611
612  typwin = owl_global_get_curs_typwin(&g);
613  while (1) {
614    j.ch = wgetch(typwin);
615    if (j.ch == ERR) return;
616   
617    owl_global_set_lastinputtime(&g, time(NULL));
618    pw=owl_global_get_popwin(&g);
619    tw=owl_global_get_typwin(&g);
620
621    j.uch = '\0';
622    if (j.ch >= KEY_MIN && j.ch <= KEY_MAX) {
623      /* This is a curses control character. */
624    }
625    else if (j.ch > 0x7f && j.ch < 0xfe) {
626      /* Pull in a full utf-8 character. */
627      int bytes, i;
628      char utf8buf[7];
629      memset(utf8buf, '\0', 7);
630     
631      utf8buf[0] = j.ch;
632     
633      if ((j.ch & 0xc0) && (~j.ch & 0x20)) bytes = 2;
634      else if ((j.ch & 0xe0) && (~j.ch & 0x10)) bytes = 3;
635      else if ((j.ch & 0xf0) && (~j.ch & 0x08)) bytes = 4;
636      else if ((j.ch & 0xf8) && (~j.ch & 0x04)) bytes = 5;
637      else if ((j.ch & 0xfc) && (~j.ch & 0x02)) bytes = 6;
638      else bytes = 1;
639     
640      for (i = 1; i < bytes; i++) {
641        int tmp =  wgetch(typwin);
642        /* If what we got was not a byte, or not a continuation byte */
643        if (tmp > 0xff || !(tmp & 0x80 && ~tmp & 0x40)) {
644          /* ill-formed UTF-8 code unit subsequence, put back the
645             char we just got. */
646          ungetch(tmp);
647          j.ch = ERR;
648          break;
649        }
650        utf8buf[i] = tmp;
651      }
652     
653      if (j.ch != ERR) {
654        if (g_utf8_validate(utf8buf, -1, NULL)) {
655          j.uch = g_utf8_get_char(utf8buf);
656        }
657        else {
658          j.ch = ERR;
659        }
660      }
661    }
662    else if (j.ch <= 0x7f) {
663      j.uch = j.ch;
664    }
665   
666    owl_global_set_lastinputtime(&g, time(NULL));
667    /* find and activate the current keymap.
668     * TODO: this should really get fixed by activating
669     * keymaps as we switch between windows...
670     */
671    if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
672      owl_context_set_popless(owl_global_get_context(&g), 
673                              owl_global_get_viewwin(&g));
674      owl_function_activate_keymap("popless");
675    } else if (owl_global_is_typwin_active(&g) 
676               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
677      /*
678        owl_context_set_editline(owl_global_get_context(&g), tw);
679        owl_function_activate_keymap("editline");
680      */
681    } else if (owl_global_is_typwin_active(&g) 
682               && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
683      owl_context_set_editmulti(owl_global_get_context(&g), tw);
684      owl_function_activate_keymap("editmulti");
685    } else {
686      owl_context_set_recv(owl_global_get_context(&g));
687      owl_function_activate_keymap("recv");
688    }
689    /* now actually handle the keypress */
690    ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
691    if (ret!=0 && ret!=1) {
692      owl_function_makemsg("Unable to handle keypress");
693    }
694  }
695}
696
697void sig_handler(int sig, siginfo_t *si, void *data)
698{
699  if (sig==SIGWINCH) {
700    /* we can't inturrupt a malloc here, so it just sets a flag
701     * schedulding a resize for later
702     */
703    owl_function_resize();
704  } else if (sig==SIGPIPE || sig==SIGCHLD) {
705    /* Set a flag and some info that we got the sigpipe
706     * so we can record that we got it and why... */
707    owl_global_set_errsignal(&g, sig, si);
708  } else if (sig==SIGTERM || sig==SIGHUP) {
709    owl_function_quit();
710  }
711}
712
713void usage()
714{
715  fprintf(stderr, "Barnowl version %s\n", OWL_VERSION_STRING);
716  fprintf(stderr, "Usage: barnowl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-s <confdir>] [-t <ttyname>]\n");
717  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
718  fprintf(stderr, "  -d      enable debugging\n");
719  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
720  fprintf(stderr, "  -v      print the Barnowl version number and exit\n");
721  fprintf(stderr, "  -h      print this help message\n");
722  fprintf(stderr, "  -c      specify an alternate config file\n");
723  fprintf(stderr, "  -s      specify an alternate config dir (default ~/.owl)\n");
724  fprintf(stderr, "  -t      set the tty name\n");
725}
726
727#if OWL_STDERR_REDIR
728
729/* Replaces stderr with a pipe so that we can read from it.
730 * Returns the fd of the pipe from which stderr can be read. */
731int stderr_replace(void)
732{
733  int pipefds[2];
734  if (0 != pipe(pipefds)) {
735    perror("pipe");
736    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
737    return -1;
738  }
739    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
740  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
741    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
742    perror("dup2");
743    return -1;
744  }
745  return pipefds[0];
746}
747
748/* Sends stderr (read from rfd) messages to the error console */
749void stderr_redirect_handler(owl_dispatch *d)
750{
751  int navail, bread;
752  char buf[4096];
753  int rfd = d->fd;
754  if (rfd<0) return;
755  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
756    return;
757  }
758  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
759  if (navail <= 0) return;
760  if (navail > sizeof(buf)-1) {
761    navail = sizeof(buf)-1;
762  }
763  bread = read(rfd, buf, navail);
764  if (buf[navail-1] != '\0') {
765    buf[navail] = '\0';
766  }
767  owl_function_error("[stderr]\n%s", buf);
768}
769
770#endif /* OWL_STDERR_REDIR */
771
772void owl_zephyr_buddycheck_timer(owl_timer *t, void *data)
773{
774  if (owl_global_is_pseudologins(&g)) {
775    owl_function_debugmsg("Doing zephyr buddy check");
776    owl_function_zephyr_buddy_check(1);
777  }
778}
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