source: owl.c @ ea215ac

barnowl_perlaimdebianrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since ea215ac was d03091c, checked in by Sam Hartman <hartmans@mit.edu>, 15 years ago
Reorder configuration handling so that perlwrap.m is pulled in before .owlconf. Initialize perl *always* even without owlconf. Disable -c command line argument
  • Property mode set to 100644
File size: 25.6 KB
Line 
1/*  Copyright (c) 2004 James Kretchmar. All rights reserved.
2 *
3 *  Redistribution and use in source and binary forms, with or without
4 *  modification, are permitted provided that the following conditions are
5 *  met:
6 * 
7 *    * Redistributions of source code must retain the above copyright
8 *      notice, this list of conditions and the following disclaimer.
9 * 
10 *    * Redistributions in binary form must reproduce the above copyright
11 *      notice, this list of conditions and the following disclaimer in
12 *      the documentation and/or other materials provided with the
13 *      distribution.
14 * 
15 *    * Redistributions in any form must be accompanied by information on
16 *      how to obtain complete source code for the Owl software and any
17 *      accompanying software that uses the Owl software. The source code
18 *      must either be included in the distribution or be available for no
19 *      more than the cost of distribution plus a nominal fee, and must be
20 *      freely redistributable under reasonable conditions. For an
21 *      executable file, complete source code means the source code for
22 *      all modules it contains. It does not include source code for
23 *      modules or files that typically accompany the major components of
24 *      the operating system on which the executable file runs.
25 * 
26 *
27 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
29 *  WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
30 *  NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
31 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
34 *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
35 *  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
36 *  OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
37 *  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#include <stdio.h>
41#include <unistd.h>
42#include <stdlib.h>
43#include <string.h>
44#include <signal.h>
45#include <time.h>
46#include <sys/param.h>
47#include <sys/types.h>
48#include <termios.h>
49#include <sys/stat.h>
50#include "owl.h"
51
52#if OWL_STDERR_REDIR
53#ifdef HAVE_SYS_IOCTL_H
54#include <sys/ioctl.h>
55#endif
56#ifdef HAVE_SYS_FILIO_H
57#include <sys/filio.h>
58#endif
59int stderr_replace(void);
60#endif
61
62static const char fileIdent[] = "$Id$";
63
64owl_global g;
65
66int main(int argc, char **argv, char **env)
67{
68  WINDOW *recwin, *sepwin, *typwin, *msgwin;
69  owl_editwin *tw;
70  owl_popwin *pw;
71  int j, ret, initialsubs, debug, argcsave, followlast;
72  int newmsgs, zpendcount, nexttimediff;
73  struct sigaction sigact;
74  char *configfile, *tty, *perlout, *perlerr, **argvsave, buff[LINE], startupmsg[LINE];
75  owl_filter *f;
76  owl_style *s;
77  time_t nexttime, now;
78  struct tm *today;
79  char *dir;
80  struct termios tio;
81#ifdef HAVE_LIBZEPHYR
82  ZNotice_t notice;
83#endif
84#if OWL_STDERR_REDIR
85  int newstderr;
86#endif
87
88  argcsave=argc;
89  argvsave=argv;
90  configfile=NULL;
91  tty=NULL;
92  debug=0;
93  initialsubs=1;
94  if (argc>0) {
95    argv++;
96    argc--;
97  }
98  while (argc>0) {
99    if (!strcmp(argv[0], "-n")) {
100      initialsubs=0;
101      argv++;
102      argc--;
103    } else if (!strcmp(argv[0], "-c")) {
104      if (argc<2) {
105        fprintf(stderr, "Too few arguments to -c\n");
106        usage();
107        exit(1);
108      }
109      configfile=argv[1];
110      abort(); /*We dirty hackers have broken -c for now--hartmans*/
111      argv+=2;
112      argc-=2;
113    } else if (!strcmp(argv[0], "-t")) {
114      if (argc<2) {
115        fprintf(stderr, "Too few arguments to -t\n");
116        usage();
117        exit(1);
118      }
119      tty=argv[1];
120      argv+=2;
121      argc-=2;
122    } else if (!strcmp(argv[0], "-d")) {
123      debug=1;
124      argv++;
125      argc--;
126    } else if (!strcmp(argv[0], "-D")) {
127      debug=1;
128      unlink(OWL_DEBUG_FILE);
129      argv++;
130      argc--;
131    } else if (!strcmp(argv[0], "-v")) {
132      printf("This is owl version %s\n", OWL_VERSION_STRING);
133      exit(0);
134    } else {
135      fprintf(stderr, "Uknown argument\n");
136      usage();       
137      exit(1);
138    }
139  }
140
141  owl_function_debugmsg("startup: Finished parsing arguments");
142
143#ifdef HAVE_LIBZEPHYR
144  /* zephyr init */
145  ret=owl_zephyr_initialize();
146  if (ret) {
147    exit(1);
148  }
149#endif
150 
151  /* signal handler */
152  /*sigact.sa_handler=sig_handler;*/
153  sigact.sa_sigaction=sig_handler;
154  sigemptyset(&sigact.sa_mask);
155  sigact.sa_flags=SA_SIGINFO;
156  sigaction(SIGWINCH, &sigact, NULL);
157  sigaction(SIGALRM, &sigact, NULL);
158  sigaction(SIGPIPE, &sigact, NULL);
159  sigaction(SIGTERM, &sigact, NULL);
160  sigaction(SIGHUP, &sigact, NULL);
161
162  /* save initial terminal settings */
163  tcgetattr(0, owl_global_get_startup_tio(&g));
164
165  /* turn ISTRIP off */
166  tcgetattr(0, &tio);
167  tio.c_iflag &= ~ISTRIP;
168  tcsetattr(0, TCSAFLUSH, &tio);
169
170  /* screen init */
171  if (!getenv("TERMINFO")) {
172    sprintf(buff, "TERMINFO=%s", TERMINFO);
173    putenv(buff);
174    owl_function_debugmsg("startup: setting TERMINFO to %s", TERMINFO);
175  } else {
176    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
177  }
178  initscr();
179  start_color();
180#ifdef HAVE_USE_DEFAULT_COLORS
181  use_default_colors();
182#endif
183  raw();
184  noecho();
185
186  /* define simple color pairs */
187  if (has_colors() && COLOR_PAIRS>=8) {
188    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   -1);
189    init_pair(OWL_COLOR_RED,     COLOR_RED,     -1);
190    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   -1);
191    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  -1);
192    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    -1);
193    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, -1);
194    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    -1);
195    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   -1);
196  }
197
198  /* owl global init */
199  owl_global_init(&g);
200  if (debug) owl_global_set_debug_on(&g);
201  owl_function_debugmsg("startup: first available debugging message");
202  owl_global_set_startupargs(&g, argcsave, argvsave);
203#ifdef HAVE_LIBZEPHYR
204  owl_global_set_havezephyr(&g);
205#endif
206  owl_global_set_haveaim(&g);
207
208#if OWL_STDERR_REDIR
209  /* Do this only after we've started curses up... */
210  owl_function_debugmsg("startup: doing stderr redirection");
211  newstderr = stderr_replace();
212  owl_muxevents_add(owl_global_get_muxevents(&g), newstderr, OWL_MUX_READ,
213                    stderr_redirect_handler, NULL);
214#endif   
215
216  /* create the owl directory, in case it does not exist */
217  owl_function_debugmsg("startup: creating owl directory, if not present");
218  dir=owl_sprintf("%s/%s", owl_global_get_homedir(&g), OWL_CONFIG_DIR);
219  mkdir(dir, S_IRWXU);
220  owl_free(dir);
221
222  /* set the tty, either from the command line, or by figuring it out */
223  owl_function_debugmsg("startup: setting tty name");
224  if (tty) {
225    owl_global_set_tty(&g, tty);
226  } else {
227    owl_global_set_tty(&g, owl_util_get_default_tty());
228  }
229
230  /* setup the built-in styles */
231  owl_function_debugmsg("startup: creating built-in styles");
232  s=owl_malloc(sizeof(owl_style));
233  owl_style_create_internal(s, "default", &owl_stylefunc_default, "Default message formatting");
234  owl_global_add_style(&g, s);
235
236  s=owl_malloc(sizeof(owl_style));
237  owl_style_create_internal(s, "basic", &owl_stylefunc_basic, "Basic message formatting.");
238  owl_global_add_style(&g, s);
239#if 0
240  s=owl_malloc(sizeof(owl_style));
241  owl_style_create_internal(s, "vt", &owl_stylefunc_vt, "VT message formatting.");
242  owl_global_add_style(&g, s);
243#endif
244  s=owl_malloc(sizeof(owl_style));
245  owl_style_create_internal(s, "oneline", &owl_stylefunc_oneline, "Formats for one-line-per-message");
246  owl_global_add_style(&g, s);
247
248  /* setup the default filters */
249  /* the personal filter will need to change again when AIM chat's are
250   *  included.  Also, there should be an %aimme% */
251  owl_function_debugmsg("startup: creating default filters");
252  f=owl_malloc(sizeof(owl_filter));
253  owl_filter_init_fromstring(f, "personal", "( type ^zephyr$ "
254                             "and class ^message$ and instance ^personal$ "
255                             "and ( recipient ^%me%$ or sender ^%me%$ ) ) "
256                             "or ( type ^aim$ and login ^none$ )");
257  owl_list_append_element(owl_global_get_filterlist(&g), f);
258
259  f=owl_malloc(sizeof(owl_filter));
260  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
261  owl_list_append_element(owl_global_get_filterlist(&g), f);
262
263  f=owl_malloc(sizeof(owl_filter));
264  owl_filter_init_fromstring(f, "ping", "opcode ^ping$");
265  owl_list_append_element(owl_global_get_filterlist(&g), f);
266
267  f=owl_malloc(sizeof(owl_filter));
268  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
269  owl_list_append_element(owl_global_get_filterlist(&g), f);
270
271  f=owl_malloc(sizeof(owl_filter));
272  owl_filter_init_fromstring(f, "login", "not login ^none$");
273  owl_list_append_element(owl_global_get_filterlist(&g), f);
274
275  f=owl_malloc(sizeof(owl_filter));
276  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
277  owl_list_append_element(owl_global_get_filterlist(&g), f);
278
279  f=owl_malloc(sizeof(owl_filter));
280  owl_filter_init_fromstring(f, "out", "direction ^out$");
281  owl_list_append_element(owl_global_get_filterlist(&g), f);
282
283  f=owl_malloc(sizeof(owl_filter));
284  owl_filter_init_fromstring(f, "aim", "type ^aim$");
285  owl_list_append_element(owl_global_get_filterlist(&g), f);
286
287  f=owl_malloc(sizeof(owl_filter));
288  owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$");
289  owl_list_append_element(owl_global_get_filterlist(&g), f);
290
291  f=owl_malloc(sizeof(owl_filter));
292  owl_filter_init_fromstring(f, "none", "false");
293  owl_list_append_element(owl_global_get_filterlist(&g), f);
294
295  f=owl_malloc(sizeof(owl_filter));
296  owl_filter_init_fromstring(f, "all", "true");
297  owl_list_append_element(owl_global_get_filterlist(&g), f);
298
299  /* set the current view */
300  owl_function_debugmsg("startup: setting the current view");
301  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
302
303  /* AIM init */
304  owl_function_debugmsg("startup: doing AIM initialization");
305  owl_aim_init();
306
307  /* process the startup file */
308  owl_function_debugmsg("startup: processing startup file");
309  owl_function_source(NULL);
310
311  /* read the config file */
312  owl_function_debugmsg("startup: processing config file");
313  owl_context_set_readconfig(owl_global_get_context(&g));
314  perlerr=owl_perlconfig_readconfig();
315  if (perlerr) {
316    endwin();
317    owl_function_error("Error parsing configfile: %s\n", perlerr);
318    fprintf(stderr, "\nError parsing configfile: %s\n", perlerr);
319    fflush(stderr);
320    printf("\nError parsing configfile: %s\n", perlerr);
321    fflush(stdout);
322    exit(1);
323  }
324
325  /* if the config defines a formatting function, add 'perl' as a style */
326  if (owl_global_is_config_format(&g)) {
327    owl_function_debugmsg("Found perl formatting");
328    s=owl_malloc(sizeof(owl_style));
329    owl_style_create_perl(s, "perl", "owl::_format_msg_legacy_wrap",
330                          "User-defined perl style that calls owl::format_msg"
331                          "with legacy global variable support");
332    owl_global_add_style(&g, s);
333    owl_global_set_default_style(&g, "perl");
334  }
335
336  /* execute the startup function in the configfile */
337  owl_function_debugmsg("startup: executing perl startup, if applicable");
338  perlout = owl_perlconfig_execute("owl::startup();");
339  if (perlout) owl_free(perlout);
340 
341  /* hold on to the window names for convenience */
342  msgwin=owl_global_get_curs_msgwin(&g);
343  recwin=owl_global_get_curs_recwin(&g);
344  sepwin=owl_global_get_curs_sepwin(&g);
345  typwin=owl_global_get_curs_typwin(&g);
346  tw=owl_global_get_typwin(&g);
347
348  /* welcome message */
349  owl_function_debugmsg("startup: creating splash message");
350  strcpy(startupmsg, "-----------------------------------------------------------------------\n");
351  sprintf(buff,      "Welcome to Owl version %s.  Press 'h' for on-line help. \n", OWL_VERSION_STRING);
352  strcat(startupmsg, buff);
353  strcat(startupmsg, "                                                                       \n");
354  strcat(startupmsg, "This is an UNOFFICIAL DEVELOPMENT BUILD of owl. If you are using this  \n");
355  strcat(startupmsg, "build regularly, please add yourself to dirty-owl-hackers@mit.edu      \n");
356  strcat(startupmsg, "                                                                 ^ ^   \n");
357  strcat(startupmsg, "Any bugs should be reported to dirty-owl-hackers@mit.edu         OvO   \n");
358  strcat(startupmsg, "Do not seek help with this build from bug-owl or ktools.        (   )  \n");
359  strcat(startupmsg, "-----------------------------------------------------------------m-m---\n");
360  owl_function_adminmsg("", startupmsg);
361  sepbar(NULL);
362
363  wrefresh(sepwin);
364
365  /* load zephyr subs */
366  if (initialsubs) {
367    int ret2;
368    owl_function_debugmsg("startup: loading initial zephyr subs");
369
370    /* load default subscriptions */
371    ret=owl_zephyr_loaddefaultsubs();
372   
373    /* load subscriptions from subs file */
374    ret2=owl_zephyr_loadsubs(NULL, 0);
375
376    if (ret || ret2) {
377      owl_function_adminmsg("", "Error loading zephyr subscriptions");
378    } else if (ret2!=-1) {
379      owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
380    }
381
382    /* load login subscriptions */
383    if (owl_global_is_loginsubs(&g)) {
384      owl_function_debugmsg("startup: loading login subs");
385      owl_function_loadloginsubs(NULL);
386    }
387  }
388
389  /* First buddy check to sync the list without notifications */
390  owl_function_debugmsg("startup: doing initial zephyr buddy check");
391  /* owl_function_zephyr_buddy_check(0); */
392
393  /* set the startup and default style, based on userclue and presence of a
394   * formatting function */
395  owl_function_debugmsg("startup: setting startup and default style");
396  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
397    /* the style was set by the user: leave it alone */
398  } else if (owl_global_is_config_format(&g)) {
399    owl_global_set_default_style(&g, "perl");
400  } else if (owl_global_is_userclue(&g, OWL_USERCLUE_CLASSES)) {
401    owl_global_set_default_style(&g, "default");
402  } else {
403    owl_global_set_default_style(&g, "basic");
404  }
405
406  /* zlog in if we need to */
407  if (owl_global_is_startuplogin(&g)) {
408    owl_function_debugmsg("startup: doing zlog in");
409    owl_zephyr_zlog_in();
410  }
411
412  owl_function_debugmsg("startup: set style for the view");
413  owl_view_set_style(owl_global_get_current_view(&g), 
414                     owl_global_get_style_by_name(&g, owl_global_get_default_style(&g)));   
415
416  owl_function_debugmsg("startup: setting context interactive");
417  owl_context_set_interactive(owl_global_get_context(&g));
418
419  nexttimediff=10;
420  nexttime=time(NULL);
421
422  owl_function_debugmsg("startup: entering main loop");
423  /* main loop */
424  while (1) {
425
426    /* if a resize has been scheduled, deal with it */
427    owl_global_resize(&g, 0, 0);
428
429    /* these are here in case a resize changes the windows */
430    msgwin=owl_global_get_curs_msgwin(&g);
431    recwin=owl_global_get_curs_recwin(&g);
432    sepwin=owl_global_get_curs_sepwin(&g);
433    typwin=owl_global_get_curs_typwin(&g);
434
435    followlast=owl_global_should_followlast(&g);
436   
437    /* Do AIM stuff */
438    if (owl_global_is_doaimevents(&g)) {
439      owl_aim_process_events();
440
441      if (owl_global_is_aimloggedin(&g)) {
442        if (owl_timer_is_expired(owl_global_get_aim_buddyinfo_timer(&g))) {
443          /* owl_buddylist_request_idletimes(owl_global_get_buddylist(&g)); */
444          owl_timer_reset(owl_global_get_aim_buddyinfo_timer(&g));
445        }
446      }
447    }
448
449    /* Hook perl into the loop */
450
451    if (owl_perlconfig_is_function("owl::mainloop_hook")) {
452         owl_perlconfig_mainloop();
453    }
454
455    /* little hack */
456    now=time(NULL);
457    today=localtime(&now);
458    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
459      if (time(NULL)>nexttime) {
460        if (nexttimediff==1) {
461          nexttimediff=10;
462        } else {
463          nexttimediff=1;
464        }
465        nexttime+=nexttimediff;
466        owl_hack_animate();
467      }
468    }
469
470    /* Grab incoming messages. */
471    newmsgs=0;
472    zpendcount=0;
473    while(owl_zephyr_zpending() || owl_global_messagequeue_pending(&g)) {
474#ifdef HAVE_LIBZEPHYR
475      struct sockaddr_in from;
476#endif
477      owl_message *m=NULL;
478      owl_filter *f;
479
480      /* grab the new message, stick it in 'm' */
481      if (owl_zephyr_zpending()) {
482#ifdef HAVE_LIBZEPHYR
483        /* grab a zephyr notice, but if we've done 20 without stopping,
484           take a break to process keystrokes etc. */
485        if (zpendcount>20) break;
486        ZReceiveNotice(&notice, &from);
487        zpendcount++;
488       
489        /* is this an ack from a zephyr we sent? */
490        if (owl_zephyr_notice_is_ack(&notice)) {
491          owl_zephyr_handle_ack(&notice);
492          continue;
493        }
494       
495        /* if it's a ping and we're not viewing pings then skip it */
496        if (!owl_global_is_rxping(&g) && !strcasecmp(notice.z_opcode, "ping")) {
497          continue;
498        }
499
500        /* create the new message */
501        m=owl_malloc(sizeof(owl_message));
502        owl_message_create_from_znotice(m, &notice);
503#endif
504      } else if (owl_global_messagequeue_pending(&g)) {
505        /* pick up the non-zephyr message in the message queue */
506        m=owl_global_messageuque_popmsg(&g);
507      } else {
508        /* Not supposed to happen, but we seem to get here on resizes */
509        owl_function_debugmsg("Bottomed out looking for zephyr");
510      }
511
512      /* If we didn't pick up a message for some reason, don't go on */
513      if (m==NULL) {
514        owl_function_debugmsg("m is null in main loop");
515        continue;
516      }
517     
518      /* if this message it on the puntlist, nuke it and continue */
519      if (owl_global_message_is_puntable(&g, m)) {
520        owl_message_free(m);
521        continue;
522      }
523
524      /*  login or logout that should be ignored? */
525      if (owl_global_is_ignorelogins(&g) && owl_message_is_loginout(m)) {
526        owl_message_free(m);
527        continue;
528      }
529
530      /* otherwise add it to the global list */
531      owl_messagelist_append_element(owl_global_get_msglist(&g), m);
532      newmsgs=1;
533
534      /* let the config know the new message has been received */
535      owl_perlconfig_getmsg(m, 0, NULL);
536
537      /* add it to any necessary views; right now there's only the current view */
538      owl_view_consider_message(owl_global_get_current_view(&g), m);
539
540      /* do we need to autoreply? */
541      if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
542        if (owl_message_is_type_zephyr(m)) {
543          owl_zephyr_zaway(m);
544        } else if (owl_message_is_type_aim(m)) {
545          if (owl_message_is_private(m)) {
546            owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
547          }
548        }
549      }
550
551      /* ring the bell if it's a personal */
552      if (!strcmp(owl_global_get_personalbell(&g), "on")) {
553          if (!owl_message_is_loginout(m) &&
554              !owl_message_is_mail(m) &&
555              owl_message_is_private(m)) {
556            owl_function_beep();
557          }
558      } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
559        /* do nothing */
560      } else {
561        f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
562        if (f && owl_filter_message_match(f, m)) {
563          owl_function_beep();
564        }
565      }
566
567
568      /* if it matches the alert filter, do the alert action */
569      f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
570      if (f && owl_filter_message_match(f, m)) {
571        owl_function_command(owl_global_get_alert_action(&g));
572      }
573
574      /* if it's a zephyr login or logout, update the zbuddylist */
575      if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
576        if (owl_message_is_login(m)) {
577          owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
578        } else if (owl_message_is_logout(m)) {
579          owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
580        } else {
581          owl_function_error("Internal error: received login notice that is neither login nor logout");
582        }
583      }
584
585      /* check for burning ears message */
586      /* this is an unsupported feature */
587      if (owl_global_is_burningears(&g) && owl_message_is_burningears(m)) {
588        char *buff;
589        buff = owl_sprintf("@i(Burning ears message on class %s)", owl_message_get_class(m));
590        owl_function_adminmsg(buff, "");
591        owl_free(buff);
592        owl_function_beep();
593      }
594
595      /* log the message if we need to */
596      owl_log_message(m);
597    }
598
599    /* is it time to check zbuddies? */
600    if (owl_global_is_pseudologins(&g)) {
601      if (owl_timer_is_expired(owl_global_get_zephyr_buddycheck_timer(&g))) {
602        owl_function_debugmsg("Doing zephyr buddy check");
603        owl_function_zephyr_buddy_check(1);
604        owl_timer_reset(owl_global_get_zephyr_buddycheck_timer(&g));
605      }
606    }
607
608    /* dispatch any muxevents */
609    owl_muxevents_dispatch(owl_global_get_muxevents(&g), 0);
610
611    /* follow the last message if we're supposed to */
612    if (newmsgs && followlast) {
613      owl_function_lastmsg_noredisplay();
614    }
615
616    /* do the newmsgproc thing */
617    if (newmsgs) {
618      owl_function_do_newmsgproc();
619    }
620   
621    /* redisplay if necessary */
622    /* this should be optimized to not run if the new messages won't be displayed */
623    if (newmsgs) {
624      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
625      sepbar(NULL);
626      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
627        owl_popwin_refresh(owl_global_get_popwin(&g));
628        /* TODO: this is a broken kludge */
629        if (owl_global_get_viewwin(&g)) {
630          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
631        }
632      }
633      owl_global_set_needrefresh(&g);
634    }
635
636    /* if a popwin just came up, refresh it */
637    pw=owl_global_get_popwin(&g);
638    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
639      owl_popwin_refresh(pw);
640      owl_popwin_no_needs_first_refresh(pw);
641      owl_global_set_needrefresh(&g);
642      /* TODO: this is a broken kludge */
643      if (owl_global_get_viewwin(&g)) {
644        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
645      }
646    }
647
648    /* update the terminal if we need to */
649    if (owl_global_is_needrefresh(&g)) {
650      /* leave the cursor in the appropriate window */
651      if (owl_global_is_typwin_active(&g)) {
652        owl_function_set_cursor(typwin);
653      } else {
654        owl_function_set_cursor(sepwin);
655      }
656      doupdate();
657      owl_global_set_noneedrefresh(&g);
658    }
659
660    /* Handle all keypresses.  If no key has been pressed, sleep for a
661     * little bit, but otherwise do not.  This lets input be grabbed
662     * as quickly as possbile */
663    j=wgetch(typwin);
664    if (j==ERR) {
665      usleep(10);
666    } else {
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    /* Log any error signals */
697    {
698      siginfo_t si;
699      int signum;
700      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
701        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %d  errno: %d)", 
702                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
703                           si.si_code, si.si_band, si.si_errno);
704      }
705    }
706
707  }
708}
709
710void sig_handler(int sig, siginfo_t *si, void *data)
711{
712  if (sig==SIGWINCH) {
713    /* we can't inturrupt a malloc here, so it just sets a flag
714     * schedulding a resize for later
715     */
716    owl_function_resize();
717  } else if (sig==SIGPIPE || sig==SIGCHLD) {
718    /* Set a flag and some info that we got the sigpipe
719     * so we can record that we got it and why... */
720    owl_global_set_errsignal(&g, sig, si);
721  } else if (sig==SIGTERM || sig==SIGHUP) {
722    owl_function_quit();
723  }
724
725}
726
727void usage()
728{
729  fprintf(stderr, "Owl version %s\n", OWL_VERSION_STRING);
730  fprintf(stderr, "Usage: owl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-t <ttyname>]\n");
731  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
732  fprintf(stderr, "  -d      enable debugging\n");
733  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
734  fprintf(stderr, "  -v      print the Owl version number and exit\n");
735  fprintf(stderr, "  -h      print this help message\n");
736  fprintf(stderr, "  -c      specify an alternate config file\n");
737  fprintf(stderr, "  -t      set the tty name\n");
738}
739
740#if OWL_STDERR_REDIR
741
742/* Replaces stderr with a pipe so that we can read from it.
743 * Returns the fd of the pipe from which stderr can be read. */
744int stderr_replace(void)
745{
746  int pipefds[2];
747  if (0 != pipe(pipefds)) {
748    perror("pipe");
749    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
750    return -1;
751  }
752    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
753  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
754    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
755    perror("dup2");
756    return -1;
757  }
758  return pipefds[0];
759}
760
761/* Sends stderr (read from rfd) messages to the error console */
762void stderr_redirect_handler(int handle, int rfd, int eventmask, void *data) 
763{
764  int navail, bread;
765  char *buf;
766  /*owl_function_debugmsg("stderr_redirect: called with rfd=%d\n", rfd);*/
767  if (rfd<0) return;
768  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
769    return;
770  }
771  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
772  if (navail<=0) return;
773  if (navail>256) { navail = 256; }
774  buf = owl_malloc(navail+1);
775  bread = read(rfd, buf, navail);
776  if (buf[navail-1] != '\0') {
777    buf[navail] = '\0';
778  }
779  owl_function_error("Err: %s", buf);
780  owl_free(buf);
781}
782
783#endif /* OWL_STDERR_REDIR */
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