source: owl.c @ 723f464

barnowl_perlaimdebianrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since 723f464 was 312675c, checked in by Nelson Elhage <nelhage@mit.edu>, 14 years ago
Fixing the ``personal'' filter to be more generic. Now works with jabber.
  • Property mode set to 100644
File size: 25.4 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  /* signal handler */
144  /*sigact.sa_handler=sig_handler;*/
145  sigact.sa_sigaction=sig_handler;
146  sigemptyset(&sigact.sa_mask);
147  sigact.sa_flags=SA_SIGINFO;
148  sigaction(SIGWINCH, &sigact, NULL);
149  sigaction(SIGALRM, &sigact, NULL);
150  sigaction(SIGPIPE, &sigact, NULL);
151  sigaction(SIGTERM, &sigact, NULL);
152  sigaction(SIGHUP, &sigact, NULL);
153
154  /* save initial terminal settings */
155  tcgetattr(0, owl_global_get_startup_tio(&g));
156
157  /* turn ISTRIP off */
158  tcgetattr(0, &tio);
159  tio.c_iflag &= ~ISTRIP;
160  tcsetattr(0, TCSAFLUSH, &tio);
161
162  /* screen init */
163  if (!getenv("TERMINFO")) {
164    sprintf(buff, "TERMINFO=%s", TERMINFO);
165    putenv(buff);
166    owl_function_debugmsg("startup: setting TERMINFO to %s", TERMINFO);
167  } else {
168    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
169  }
170  initscr();
171  start_color();
172#ifdef HAVE_USE_DEFAULT_COLORS
173  use_default_colors();
174#endif
175  raw();
176  noecho();
177
178  /* define simple color pairs */
179  if (has_colors() && COLOR_PAIRS>=8) {
180    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   -1);
181    init_pair(OWL_COLOR_RED,     COLOR_RED,     -1);
182    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   -1);
183    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  -1);
184    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    -1);
185    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, -1);
186    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    -1);
187    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   -1);
188  }
189
190  /* owl global init */
191  owl_global_init(&g);
192    if (debug) owl_global_set_debug_on(&g);
193  owl_function_debugmsg("startup: first available debugging message");
194  owl_global_set_startupargs(&g, argcsave, argvsave);
195  owl_global_set_haveaim(&g);
196
197#ifdef HAVE_LIBZEPHYR
198  /* zephyr init */
199  ret=owl_zephyr_initialize();
200  if (!ret)
201      owl_global_set_havezephyr(&g);
202#endif
203
204#if OWL_STDERR_REDIR
205  /* Do this only after we've started curses up... */
206  owl_function_debugmsg("startup: doing stderr redirection");
207  newstderr = stderr_replace();
208  owl_muxevents_add(owl_global_get_muxevents(&g), newstderr, OWL_MUX_READ,
209                    stderr_redirect_handler, NULL);
210#endif   
211
212  /* create the owl directory, in case it does not exist */
213  owl_function_debugmsg("startup: creating owl directory, if not present");
214  dir=owl_sprintf("%s/%s", owl_global_get_homedir(&g), OWL_CONFIG_DIR);
215  mkdir(dir, S_IRWXU);
216  owl_free(dir);
217
218  /* set the tty, either from the command line, or by figuring it out */
219  owl_function_debugmsg("startup: setting tty name");
220  if (tty) {
221    owl_global_set_tty(&g, tty);
222  } else {
223    owl_global_set_tty(&g, owl_util_get_default_tty());
224  }
225
226  /* setup the built-in styles */
227  owl_function_debugmsg("startup: creating built-in styles");
228  s=owl_malloc(sizeof(owl_style));
229  owl_style_create_internal(s, "default", &owl_stylefunc_default, "Default message formatting");
230  owl_global_add_style(&g, s);
231
232  s=owl_malloc(sizeof(owl_style));
233  owl_style_create_internal(s, "basic", &owl_stylefunc_basic, "Basic message formatting.");
234  owl_global_add_style(&g, s);
235#if 0
236  s=owl_malloc(sizeof(owl_style));
237  owl_style_create_internal(s, "vt", &owl_stylefunc_vt, "VT message formatting.");
238  owl_global_add_style(&g, s);
239#endif
240  s=owl_malloc(sizeof(owl_style));
241  owl_style_create_internal(s, "oneline", &owl_stylefunc_oneline, "Formats for one-line-per-message");
242  owl_global_add_style(&g, s);
243
244  /* setup the default filters */
245  /* the personal filter will need to change again when AIM chat's are
246   *  included.  Also, there should be an %aimme% */
247  owl_function_debugmsg("startup: creating default filters");
248  f=owl_malloc(sizeof(owl_filter));
249  owl_filter_init_fromstring(f, "personal", "isprivate ^true$");
250  owl_list_append_element(owl_global_get_filterlist(&g), f);
251
252  f=owl_malloc(sizeof(owl_filter));
253  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
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, "ping", "opcode ^ping$");
258  owl_list_append_element(owl_global_get_filterlist(&g), f);
259
260  f=owl_malloc(sizeof(owl_filter));
261  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
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, "login", "not login ^none$");
266  owl_list_append_element(owl_global_get_filterlist(&g), f);
267
268  f=owl_malloc(sizeof(owl_filter));
269  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
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, "out", "direction ^out$");
274  owl_list_append_element(owl_global_get_filterlist(&g), f);
275
276  f=owl_malloc(sizeof(owl_filter));
277  owl_filter_init_fromstring(f, "aim", "type ^aim$");
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, "zephyr", "type ^zephyr$");
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, "none", "false");
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, "all", "true");
290  owl_list_append_element(owl_global_get_filterlist(&g), f);
291
292  /* set the current view */
293  owl_function_debugmsg("startup: setting the current view");
294  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
295
296  /* AIM init */
297  owl_function_debugmsg("startup: doing AIM initialization");
298  owl_aim_init();
299
300  /* process the startup file */
301  owl_function_debugmsg("startup: processing startup file");
302  owl_function_source(NULL);
303
304  /* read the config file */
305  owl_function_debugmsg("startup: processing config file");
306  owl_context_set_readconfig(owl_global_get_context(&g));
307  perlerr=owl_perlconfig_readconfig();
308  if (perlerr) {
309    endwin();
310    owl_function_error("Error parsing configfile: %s\n", perlerr);
311    fprintf(stderr, "\nError parsing configfile: %s\n", perlerr);
312    fflush(stderr);
313    printf("\nError parsing configfile: %s\n", perlerr);
314    fflush(stdout);
315    exit(1);
316  }
317
318  /* if the config defines a formatting function, add 'perl' as a style */
319  if (owl_global_is_config_format(&g)) {
320    owl_function_debugmsg("Found perl formatting");
321    s=owl_malloc(sizeof(owl_style));
322    owl_style_create_perl(s, "perl", "owl::_format_msg_legacy_wrap",
323                          "User-defined perl style that calls owl::format_msg"
324                          "with legacy global variable support");
325    owl_global_add_style(&g, s);
326    owl_global_set_default_style(&g, "perl");
327  }
328
329  /* execute the startup function in the configfile */
330  owl_function_debugmsg("startup: executing perl startup, if applicable");
331  perlout = owl_perlconfig_execute("owl::startup();");
332  if (perlout) owl_free(perlout);
333 
334  /* hold on to the window names for convenience */
335  msgwin=owl_global_get_curs_msgwin(&g);
336  recwin=owl_global_get_curs_recwin(&g);
337  sepwin=owl_global_get_curs_sepwin(&g);
338  typwin=owl_global_get_curs_typwin(&g);
339  tw=owl_global_get_typwin(&g);
340
341  /* welcome message */
342  owl_function_debugmsg("startup: creating splash message");
343  strcpy(startupmsg, "-----------------------------------------------------------------------\n");
344  sprintf(buff,      "Welcome to Owl version %s.  Press 'h' for on-line help. \n", OWL_VERSION_STRING);
345  strcat(startupmsg, buff);
346  strcat(startupmsg, "                                                                       \n");
347  strcat(startupmsg, "This is an UNOFFICIAL DEVELOPMENT BUILD of owl. If you are using this  \n");
348  strcat(startupmsg, "build regularly, please add yourself to dirty-owl-hackers@mit.edu      \n");
349  strcat(startupmsg, "                                                                 ^ ^   \n");
350  strcat(startupmsg, "Any bugs should be reported to dirty-owl-hackers@mit.edu         OvO   \n");
351  strcat(startupmsg, "Do not seek help with this build from bug-owl or ktools.        (   )  \n");
352  strcat(startupmsg, "-----------------------------------------------------------------m-m---\n");
353  owl_function_adminmsg("", startupmsg);
354  sepbar(NULL);
355
356  wrefresh(sepwin);
357
358  /* load zephyr subs */
359  if (initialsubs) {
360    int ret2;
361    owl_function_debugmsg("startup: loading initial zephyr subs");
362
363    /* load default subscriptions */
364    ret=owl_zephyr_loaddefaultsubs();
365   
366    /* load subscriptions from subs file */
367    ret2=owl_zephyr_loadsubs(NULL, 0);
368
369    if (ret || ret2) {
370      owl_function_adminmsg("", "Error loading zephyr subscriptions");
371    } else if (ret2!=-1) {
372      owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
373    }
374
375    /* load login subscriptions */
376    if (owl_global_is_loginsubs(&g)) {
377      owl_function_debugmsg("startup: loading login subs");
378      owl_function_loadloginsubs(NULL);
379    }
380  }
381
382  /* First buddy check to sync the list without notifications */
383  owl_function_debugmsg("startup: doing initial zephyr buddy check");
384  /* owl_function_zephyr_buddy_check(0); */
385
386  /* set the startup and default style, based on userclue and presence of a
387   * formatting function */
388  owl_function_debugmsg("startup: setting startup and default style");
389  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
390    /* the style was set by the user: leave it alone */
391  } else if (owl_global_is_config_format(&g)) {
392    owl_global_set_default_style(&g, "perl");
393  } else if (owl_global_is_userclue(&g, OWL_USERCLUE_CLASSES)) {
394    owl_global_set_default_style(&g, "default");
395  } else {
396    owl_global_set_default_style(&g, "basic");
397  }
398
399  /* zlog in if we need to */
400  if (owl_global_is_startuplogin(&g)) {
401    owl_function_debugmsg("startup: doing zlog in");
402    owl_zephyr_zlog_in();
403  }
404
405  owl_function_debugmsg("startup: set style for the view");
406  owl_view_set_style(owl_global_get_current_view(&g), 
407                     owl_global_get_style_by_name(&g, owl_global_get_default_style(&g)));   
408
409  owl_function_debugmsg("startup: setting context interactive");
410  owl_context_set_interactive(owl_global_get_context(&g));
411
412  nexttimediff=10;
413  nexttime=time(NULL);
414
415  owl_function_debugmsg("startup: entering main loop");
416  /* main loop */
417  while (1) {
418
419    /* if a resize has been scheduled, deal with it */
420    owl_global_resize(&g, 0, 0);
421
422    /* these are here in case a resize changes the windows */
423    msgwin=owl_global_get_curs_msgwin(&g);
424    recwin=owl_global_get_curs_recwin(&g);
425    sepwin=owl_global_get_curs_sepwin(&g);
426    typwin=owl_global_get_curs_typwin(&g);
427
428    followlast=owl_global_should_followlast(&g);
429   
430    /* Do AIM stuff */
431    if (owl_global_is_doaimevents(&g)) {
432      owl_aim_process_events();
433
434      if (owl_global_is_aimloggedin(&g)) {
435        if (owl_timer_is_expired(owl_global_get_aim_buddyinfo_timer(&g))) {
436          /* owl_buddylist_request_idletimes(owl_global_get_buddylist(&g)); */
437          owl_timer_reset(owl_global_get_aim_buddyinfo_timer(&g));
438        }
439      }
440    }
441
442    /* Hook perl into the loop */
443    if (owl_perlconfig_is_function("owl::mainloop_hook")) {
444         owl_perlconfig_mainloop();
445    }
446
447    /* little hack */
448    now=time(NULL);
449    today=localtime(&now);
450    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
451      if (time(NULL)>nexttime) {
452        if (nexttimediff==1) {
453          nexttimediff=10;
454        } else {
455          nexttimediff=1;
456        }
457        nexttime+=nexttimediff;
458        owl_hack_animate();
459      }
460    }
461
462    /* Grab incoming messages. */
463    newmsgs=0;
464    zpendcount=0;
465    while(owl_zephyr_zpending() || owl_global_messagequeue_pending(&g)) {
466#ifdef HAVE_LIBZEPHYR
467      struct sockaddr_in from;
468#endif
469      owl_message *m=NULL;
470      owl_filter *f;
471
472      /* grab the new message, stick it in 'm' */
473      if (owl_zephyr_zpending()) {
474#ifdef HAVE_LIBZEPHYR
475        /* grab a zephyr notice, but if we've done 20 without stopping,
476           take a break to process keystrokes etc. */
477        if (zpendcount>20) break;
478        ZReceiveNotice(&notice, &from);
479        zpendcount++;
480       
481        /* is this an ack from a zephyr we sent? */
482        if (owl_zephyr_notice_is_ack(&notice)) {
483          owl_zephyr_handle_ack(&notice);
484          continue;
485        }
486       
487        /* if it's a ping and we're not viewing pings then skip it */
488        if (!owl_global_is_rxping(&g) && !strcasecmp(notice.z_opcode, "ping")) {
489          continue;
490        }
491
492        /* create the new message */
493        m=owl_malloc(sizeof(owl_message));
494        owl_message_create_from_znotice(m, &notice);
495#endif
496      } else if (owl_global_messagequeue_pending(&g)) {
497        /* pick up the non-zephyr message in the message queue */
498        m=owl_global_messageuque_popmsg(&g);
499      } else {
500        /* Not supposed to happen, but we seem to get here on resizes */
501        owl_function_debugmsg("Bottomed out looking for zephyr");
502      }
503
504      /* If we didn't pick up a message for some reason, don't go on */
505      if (m==NULL) {
506        owl_function_debugmsg("m is null in main loop");
507        continue;
508      }
509     
510      /* if this message it on the puntlist, nuke it and continue */
511      if (owl_global_message_is_puntable(&g, m)) {
512        owl_message_free(m);
513        continue;
514      }
515
516      /*  login or logout that should be ignored? */
517      if (owl_global_is_ignorelogins(&g) && owl_message_is_loginout(m)) {
518        owl_message_free(m);
519        continue;
520      }
521
522      /* otherwise add it to the global list */
523      owl_messagelist_append_element(owl_global_get_msglist(&g), m);
524      newmsgs=1;
525
526      /* let the config know the new message has been received */
527      owl_perlconfig_getmsg(m, 0, NULL);
528
529      /* add it to any necessary views; right now there's only the current view */
530      owl_view_consider_message(owl_global_get_current_view(&g), m);
531
532      /* do we need to autoreply? */
533      if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
534        if (owl_message_is_type_zephyr(m)) {
535          owl_zephyr_zaway(m);
536        } else if (owl_message_is_type_aim(m)) {
537          if (owl_message_is_private(m)) {
538            owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
539          }
540        }
541      }
542
543      /* ring the bell if it's a personal */
544      if (!strcmp(owl_global_get_personalbell(&g), "on")) {
545          if (!owl_message_is_loginout(m) &&
546              !owl_message_is_mail(m) &&
547              owl_message_is_private(m)) {
548            owl_function_beep();
549          }
550      } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
551        /* do nothing */
552      } else {
553        f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
554        if (f && owl_filter_message_match(f, m)) {
555          owl_function_beep();
556        }
557      }
558
559
560      /* if it matches the alert filter, do the alert action */
561      f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
562      if (f && owl_filter_message_match(f, m)) {
563        owl_function_command(owl_global_get_alert_action(&g));
564      }
565
566      /* if it's a zephyr login or logout, update the zbuddylist */
567      if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
568        if (owl_message_is_login(m)) {
569          owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
570        } else if (owl_message_is_logout(m)) {
571          owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
572        } else {
573          owl_function_error("Internal error: received login notice that is neither login nor logout");
574        }
575      }
576
577      /* check for burning ears message */
578      /* this is an unsupported feature */
579      if (owl_global_is_burningears(&g) && owl_message_is_burningears(m)) {
580        char *buff;
581        buff = owl_sprintf("@i(Burning ears message on class %s)", owl_message_get_class(m));
582        owl_function_adminmsg(buff, "");
583        owl_free(buff);
584        owl_function_beep();
585      }
586
587      /* log the message if we need to */
588      owl_log_message(m);
589    }
590
591    /* is it time to check zbuddies? */
592    if (owl_global_is_pseudologins(&g)) {
593      if (owl_timer_is_expired(owl_global_get_zephyr_buddycheck_timer(&g))) {
594        owl_function_debugmsg("Doing zephyr buddy check");
595        owl_function_zephyr_buddy_check(1);
596        owl_timer_reset(owl_global_get_zephyr_buddycheck_timer(&g));
597      }
598    }
599
600    /* dispatch any muxevents */
601    owl_muxevents_dispatch(owl_global_get_muxevents(&g), 0);
602
603    /* follow the last message if we're supposed to */
604    if (newmsgs && followlast) {
605      owl_function_lastmsg_noredisplay();
606    }
607
608    /* do the newmsgproc thing */
609    if (newmsgs) {
610      owl_function_do_newmsgproc();
611    }
612   
613    /* redisplay if necessary */
614    /* this should be optimized to not run if the new messages won't be displayed */
615    if (newmsgs) {
616      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
617      sepbar(NULL);
618      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
619        owl_popwin_refresh(owl_global_get_popwin(&g));
620        /* TODO: this is a broken kludge */
621        if (owl_global_get_viewwin(&g)) {
622          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
623        }
624      }
625      owl_global_set_needrefresh(&g);
626    }
627
628    /* if a popwin just came up, refresh it */
629    pw=owl_global_get_popwin(&g);
630    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
631      owl_popwin_refresh(pw);
632      owl_popwin_no_needs_first_refresh(pw);
633      owl_global_set_needrefresh(&g);
634      /* TODO: this is a broken kludge */
635      if (owl_global_get_viewwin(&g)) {
636        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
637      }
638    }
639
640    /* update the terminal if we need to */
641    if (owl_global_is_needrefresh(&g)) {
642      /* leave the cursor in the appropriate window */
643      if (owl_global_is_typwin_active(&g)) {
644        owl_function_set_cursor(typwin);
645      } else {
646        owl_function_set_cursor(sepwin);
647      }
648      doupdate();
649      owl_global_set_noneedrefresh(&g);
650    }
651
652    /* Handle all keypresses.  If no key has been pressed, sleep for a
653     * little bit, but otherwise do not.  This lets input be grabbed
654     * as quickly as possbile */
655    j=wgetch(typwin);
656    if (j==ERR) {
657      usleep(10);
658    } else {
659      /* find and activate the current keymap.
660       * TODO: this should really get fixed by activating
661       * keymaps as we switch between windows...
662       */
663      if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
664        owl_context_set_popless(owl_global_get_context(&g), 
665                                owl_global_get_viewwin(&g));
666        owl_function_activate_keymap("popless");
667      } else if (owl_global_is_typwin_active(&g) 
668                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
669        /*
670          owl_context_set_editline(owl_global_get_context(&g), tw);
671          owl_function_activate_keymap("editline");
672        */
673      } else if (owl_global_is_typwin_active(&g) 
674                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
675        owl_context_set_editmulti(owl_global_get_context(&g), tw);
676        owl_function_activate_keymap("editmulti");
677      } else {
678        owl_context_set_recv(owl_global_get_context(&g));
679        owl_function_activate_keymap("recv");
680      }
681      /* now actually handle the keypress */
682      ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
683      if (ret!=0 && ret!=1) {
684        owl_function_makemsg("Unable to handle keypress");
685      }
686    }
687
688    /* Log any error signals */
689    {
690      siginfo_t si;
691      int signum;
692      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
693        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %d  errno: %d)", 
694                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
695                           si.si_code, si.si_band, si.si_errno);
696      }
697    }
698
699  }
700}
701
702void sig_handler(int sig, siginfo_t *si, void *data)
703{
704  if (sig==SIGWINCH) {
705    /* we can't inturrupt a malloc here, so it just sets a flag
706     * schedulding a resize for later
707     */
708    owl_function_resize();
709  } else if (sig==SIGPIPE || sig==SIGCHLD) {
710    /* Set a flag and some info that we got the sigpipe
711     * so we can record that we got it and why... */
712    owl_global_set_errsignal(&g, sig, si);
713  } else if (sig==SIGTERM || sig==SIGHUP) {
714    owl_function_quit();
715  }
716
717}
718
719void usage()
720{
721  fprintf(stderr, "Owl version %s\n", OWL_VERSION_STRING);
722  fprintf(stderr, "Usage: owl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-t <ttyname>]\n");
723  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
724  fprintf(stderr, "  -d      enable debugging\n");
725  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
726  fprintf(stderr, "  -v      print the Owl version number and exit\n");
727  fprintf(stderr, "  -h      print this help message\n");
728  fprintf(stderr, "  -c      specify an alternate config file\n");
729  fprintf(stderr, "  -t      set the tty name\n");
730}
731
732#if OWL_STDERR_REDIR
733
734/* Replaces stderr with a pipe so that we can read from it.
735 * Returns the fd of the pipe from which stderr can be read. */
736int stderr_replace(void)
737{
738  int pipefds[2];
739  if (0 != pipe(pipefds)) {
740    perror("pipe");
741    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
742    return -1;
743  }
744    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
745  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
746    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
747    perror("dup2");
748    return -1;
749  }
750  return pipefds[0];
751}
752
753/* Sends stderr (read from rfd) messages to the error console */
754void stderr_redirect_handler(int handle, int rfd, int eventmask, void *data) 
755{
756  int navail, bread;
757  char *buf;
758  /*owl_function_debugmsg("stderr_redirect: called with rfd=%d\n", rfd);*/
759  if (rfd<0) return;
760  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
761    return;
762  }
763  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
764  if (navail<=0) return;
765  if (navail>256) { navail = 256; }
766  buf = owl_malloc(navail+1);
767  bread = read(rfd, buf, navail);
768  if (buf[navail-1] != '\0') {
769    buf[navail] = '\0';
770  }
771  owl_function_error("Err: %s", buf);
772  owl_free(buf);
773}
774
775#endif /* OWL_STDERR_REDIR */
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