source: owl.c @ 18e28a4

barnowl_perlaimdebianrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since 18e28a4 was 18e28a4, checked in by Eric C. Price <ecprice@mit.edu>, 14 years ago
Fixes for FreeBSD.
  • Property mode set to 100644
File size: 25.2 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
66char * owl_get_datadir() {
67    char * datadir = getenv("BARNOWL_DATA_DIR");
68    if(datadir != NULL)
69        return strchr(datadir, '=') + 1;
70    return DATADIR;
71}
72
73int main(int argc, char **argv, char **env)
74{
75  WINDOW *recwin, *sepwin, *typwin, *msgwin;
76  owl_editwin *tw;
77  owl_popwin *pw;
78  int j, ret, initialsubs, debug, argcsave, followlast;
79  int newmsgs, nexttimediff;
80  struct sigaction sigact;
81  char *configfile, *tty, *perlout, *perlerr, **argvsave, buff[LINE], startupmsg[LINE];
82  char *confdir;
83  owl_filter *f;
84  owl_style *s;
85  time_t nexttime, now;
86  struct tm *today;
87  char *dir;
88  struct termios tio;
89  owl_message *m;
90#if OWL_STDERR_REDIR
91  int newstderr;
92#endif
93
94  argcsave=argc;
95  argvsave=argv;
96  configfile=NULL;
97  confdir = NULL;
98  tty=NULL;
99  debug=0;
100  initialsubs=1;
101  if (argc>0) {
102    argv++;
103    argc--;
104  }
105  while (argc>0) {
106    if (!strcmp(argv[0], "-n")) {
107      initialsubs=0;
108      argv++;
109      argc--;
110    } else if (!strcmp(argv[0], "-c")) {
111      if (argc<2) {
112        fprintf(stderr, "Too few arguments to -c\n");
113        usage();
114        exit(1);
115      }
116      configfile=argv[1];
117      argv+=2;
118      argc-=2;
119    } else if (!strcmp(argv[0], "-t")) {
120      if (argc<2) {
121        fprintf(stderr, "Too few arguments to -t\n");
122        usage();
123        exit(1);
124      }
125      tty=argv[1];
126      argv+=2;
127      argc-=2;
128    } else if (!strcmp(argv[0], "-s")){
129      if (argc<2) {
130        fprintf(stderr, "Too few arguments to -s\n");
131        usage();
132        exit(1);
133      }
134      confdir = argv[1];
135      argv+=2;
136      argc-=2;
137    } else if (!strcmp(argv[0], "-d")) {
138      debug=1;
139      argv++;
140      argc--;
141    } else if (!strcmp(argv[0], "-D")) {
142      debug=1;
143      unlink(OWL_DEBUG_FILE);
144      argv++;
145      argc--;
146    } else if (!strcmp(argv[0], "-v")) {
147      printf("This is owl version %s\n", OWL_VERSION_STRING);
148      exit(0);
149    } else {
150      fprintf(stderr, "Uknown argument\n");
151      usage();       
152      exit(1);
153    }
154  }
155
156  owl_function_debugmsg("startup: Finished parsing arguments");
157
158  /* signal handler */
159  /*sigact.sa_handler=sig_handler;*/
160  sigact.sa_sigaction=sig_handler;
161  sigemptyset(&sigact.sa_mask);
162  sigact.sa_flags=SA_SIGINFO;
163  sigaction(SIGWINCH, &sigact, NULL);
164  sigaction(SIGALRM, &sigact, NULL);
165  sigaction(SIGPIPE, &sigact, NULL);
166  sigaction(SIGTERM, &sigact, NULL);
167  sigaction(SIGHUP, &sigact, NULL);
168
169  /* save initial terminal settings */
170  tcgetattr(0, owl_global_get_startup_tio(&g));
171
172  /* turn ISTRIP off */
173  tcgetattr(0, &tio);
174  tio.c_iflag &= ~ISTRIP;
175  tcsetattr(0, TCSAFLUSH, &tio);
176
177  /* screen init */
178  if (!getenv("TERMINFO")) {
179    owl_function_debugmsg("startup: Not setting TERMINFO");
180  } else {
181    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
182  }
183  initscr();
184  start_color();
185#ifdef HAVE_USE_DEFAULT_COLORS
186  use_default_colors();
187#endif
188  raw();
189  noecho();
190
191  /* define simple color pairs */
192  if (has_colors() && COLOR_PAIRS>=8) {
193    int bg = COLOR_BLACK;
194#ifdef HAVE_USE_DEFAULT_COLORS
195    bg = -1;
196#endif
197    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   bg);
198    init_pair(OWL_COLOR_RED,     COLOR_RED,     bg);
199    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   bg);
200    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  bg);
201    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    bg);
202    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, bg);
203    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    bg);
204    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   bg);
205  }
206
207  /* owl global init */
208  owl_global_init(&g);
209  if (debug) owl_global_set_debug_on(&g);
210  if (confdir) owl_global_set_confdir(&g, confdir);
211  owl_function_debugmsg("startup: first available debugging message");
212  owl_global_set_startupargs(&g, argcsave, argvsave);
213  owl_global_set_haveaim(&g);
214
215#ifdef HAVE_LIBZEPHYR
216  /* zephyr init */
217  ret=owl_zephyr_initialize();
218  if (!ret)
219      owl_global_set_havezephyr(&g);
220#endif
221
222#if OWL_STDERR_REDIR
223  /* Do this only after we've started curses up... */
224  owl_function_debugmsg("startup: doing stderr redirection");
225  newstderr = stderr_replace();
226  owl_muxevents_add(owl_global_get_muxevents(&g), newstderr, OWL_MUX_READ,
227                    stderr_redirect_handler, NULL);
228#endif   
229
230  /* create the owl directory, in case it does not exist */
231  owl_function_debugmsg("startup: creating owl directory, if not present");
232  dir=owl_global_get_confdir(&g);
233  mkdir(dir, S_IRWXU);
234
235  /* set the tty, either from the command line, or by figuring it out */
236  owl_function_debugmsg("startup: setting tty name");
237  if (tty) {
238    owl_global_set_tty(&g, tty);
239  } else {
240    owl_global_set_tty(&g, owl_util_get_default_tty());
241  }
242
243  /* Initialize perl */
244  owl_function_debugmsg("startup: processing config file");
245  owl_context_set_readconfig(owl_global_get_context(&g));
246  perlerr=owl_perlconfig_initperl(configfile);
247  if (perlerr) {
248    endwin();
249    owl_function_error("Internal perl error: %s\n", perlerr);
250    fprintf(stderr, "Internal perl error: %s\n", perlerr);
251    fflush(stderr);
252    printf("Internal perl error: %s\n", perlerr);
253    fflush(stdout);
254    exit(1);
255  }
256
257  /* setup the built-in styles */
258  owl_function_debugmsg("startup: creating built-in styles");
259
260  s=owl_malloc(sizeof(owl_style));
261  owl_style_create_internal(s, "basic", &owl_stylefunc_basic, "Basic message formatting.");
262  owl_global_add_style(&g, s);
263#if 0
264  s=owl_malloc(sizeof(owl_style));
265  owl_style_create_internal(s, "vt", &owl_stylefunc_vt, "VT message formatting.");
266  owl_global_add_style(&g, s);
267#endif
268  s=owl_malloc(sizeof(owl_style));
269  owl_style_create_internal(s, "oneline", &owl_stylefunc_oneline, "Formats for one-line-per-message");
270  owl_global_add_style(&g, s);
271
272  /* setup the default filters */
273  /* the personal filter will need to change again when AIM chat's are
274   *  included.  Also, there should be an %aimme% */
275  owl_function_debugmsg("startup: creating default filters");
276  f=owl_malloc(sizeof(owl_filter));
277  owl_filter_init_fromstring(f, "personal", "isprivate ^true$ and ( not type ^zephyr$"
278                             " or ( class ^message and"
279                             " ( instance ^personal$ or instance ^urgent$ ) ) )");
280  owl_list_append_element(owl_global_get_filterlist(&g), f);
281
282  f=owl_malloc(sizeof(owl_filter));
283  owl_filter_init_fromstring(f, "wordwrap", "not ( type ^admin$ or type ^zephyr$ ) ");
284  owl_list_append_element(owl_global_get_filterlist(&g), f);
285
286  f=owl_malloc(sizeof(owl_filter));
287  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
288  owl_list_append_element(owl_global_get_filterlist(&g), f);
289
290  f=owl_malloc(sizeof(owl_filter));
291  owl_filter_init_fromstring(f, "ping", "opcode ^ping$");
292  owl_list_append_element(owl_global_get_filterlist(&g), f);
293
294  f=owl_malloc(sizeof(owl_filter));
295  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
296  owl_list_append_element(owl_global_get_filterlist(&g), f);
297
298  f=owl_malloc(sizeof(owl_filter));
299  owl_filter_init_fromstring(f, "login", "not login ^none$");
300  owl_list_append_element(owl_global_get_filterlist(&g), f);
301
302  f=owl_malloc(sizeof(owl_filter));
303  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
304  owl_list_append_element(owl_global_get_filterlist(&g), f);
305
306  f=owl_malloc(sizeof(owl_filter));
307  owl_filter_init_fromstring(f, "out", "direction ^out$");
308  owl_list_append_element(owl_global_get_filterlist(&g), f);
309
310  f=owl_malloc(sizeof(owl_filter));
311  owl_filter_init_fromstring(f, "aim", "type ^aim$");
312  owl_list_append_element(owl_global_get_filterlist(&g), f);
313
314  f=owl_malloc(sizeof(owl_filter));
315  owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$");
316  owl_list_append_element(owl_global_get_filterlist(&g), f);
317
318  f=owl_malloc(sizeof(owl_filter));
319  owl_filter_init_fromstring(f, "none", "false");
320  owl_list_append_element(owl_global_get_filterlist(&g), f);
321
322  f=owl_malloc(sizeof(owl_filter));
323  owl_filter_init_fromstring(f, "all", "true");
324  owl_list_append_element(owl_global_get_filterlist(&g), f);
325
326  /* set the current view */
327  owl_function_debugmsg("startup: setting the current view");
328  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
329
330  /* AIM init */
331  owl_function_debugmsg("startup: doing AIM initialization");
332  owl_aim_init();
333
334  /* execute the startup function in the configfile */
335  owl_function_debugmsg("startup: executing perl startup, if applicable");
336  perlout = owl_perlconfig_execute("BarnOwl::Hooks::_startup();");
337  if (perlout) owl_free(perlout);
338
339  /* hold on to the window names for convenience */
340  msgwin=owl_global_get_curs_msgwin(&g);
341  recwin=owl_global_get_curs_recwin(&g);
342  sepwin=owl_global_get_curs_sepwin(&g);
343  typwin=owl_global_get_curs_typwin(&g);
344  tw=owl_global_get_typwin(&g);
345
346  /* welcome message */
347  owl_function_debugmsg("startup: creating splash message");
348  strcpy(startupmsg, "-----------------------------------------------------------------------\n");
349  sprintf(buff,      "Welcome to barnowl version %s.  Press 'h' for on-line help.            \n", OWL_VERSION_STRING);
350  strcat(startupmsg, buff);
351  strcat(startupmsg, "                                                                       \n");
352  strcat(startupmsg, "This is a development build of barnowl. If you are using this          \n");
353  strcat(startupmsg, "build regularly, please add yourself to barnowl-users@mit.edu          \n");
354  strcat(startupmsg, "                                                                 ^ ^   \n");
355  strcat(startupmsg, "                                                                 OvO   \n");
356  strcat(startupmsg, "Please report any bugs to dirty-owl-hackers@mit.edu             (   )  \n");
357  strcat(startupmsg, "-----------------------------------------------------------------m-m---\n");
358  owl_function_adminmsg("", startupmsg);
359  sepbar(NULL);
360
361  /* process the startup file */
362  owl_function_debugmsg("startup: processing startup file");
363  owl_function_source(NULL);
364
365  wrefresh(sepwin);
366
367  /* load zephyr subs */
368  if (initialsubs) {
369    int ret2;
370    owl_function_debugmsg("startup: loading initial zephyr subs");
371
372    /* load default subscriptions */
373    ret=owl_zephyr_loaddefaultsubs();
374   
375    /* load subscriptions from subs file */
376    ret2=owl_zephyr_loadsubs(NULL, 0);
377
378    if (ret || ret2) {
379      owl_function_adminmsg("", "Error loading zephyr subscriptions");
380    } else if (ret2!=-1) {
381      owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
382    }
383
384    /* load login subscriptions */
385    if (owl_global_is_loginsubs(&g)) {
386      owl_function_debugmsg("startup: loading login subs");
387      owl_function_loadloginsubs(NULL);
388    }
389  }
390
391  /* First buddy check to sync the list without notifications */
392  owl_function_debugmsg("startup: doing initial zephyr buddy check");
393  /* owl_function_zephyr_buddy_check(0); */
394
395  /* set the startup and default style, based on userclue and presence of a
396   * formatting function */
397  owl_function_debugmsg("startup: setting startup and default style");
398  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
399    /* the style was set by the user: leave it alone */
400  } else if (owl_global_is_config_format(&g)) {
401    owl_global_set_default_style(&g, "perl");
402  } else if (owl_global_is_userclue(&g, OWL_USERCLUE_CLASSES)) {
403    owl_global_set_default_style(&g, "default");
404  } else {
405    owl_global_set_default_style(&g, "basic");
406  }
407
408  /* zlog in if we need to */
409  if (owl_global_is_startuplogin(&g)) {
410    owl_function_debugmsg("startup: doing zlog in");
411    owl_zephyr_zlog_in();
412  }
413
414  owl_function_debugmsg("startup: set style for the view: %s", owl_global_get_default_style(&g));
415  s = owl_global_get_style_by_name(&g, owl_global_get_default_style(&g));
416  if(s)
417      owl_view_set_style(owl_global_get_current_view(&g), s);
418  else
419      owl_function_error("No such style: %s", owl_global_get_default_style(&g));
420
421  owl_function_debugmsg("startup: setting context interactive");
422  owl_context_set_interactive(owl_global_get_context(&g));
423
424  nexttimediff=10;
425  nexttime=time(NULL);
426
427  owl_function_debugmsg("startup: entering main loop");
428  /* main loop */
429  while (1) {
430
431    /* if a resize has been scheduled, deal with it */
432    owl_global_resize(&g, 0, 0);
433
434    /* these are here in case a resize changes the windows */
435    msgwin=owl_global_get_curs_msgwin(&g);
436    recwin=owl_global_get_curs_recwin(&g);
437    sepwin=owl_global_get_curs_sepwin(&g);
438    typwin=owl_global_get_curs_typwin(&g);
439
440    followlast=owl_global_should_followlast(&g);
441   
442    /* Do AIM stuff */
443    if (owl_global_is_doaimevents(&g)) {
444      owl_aim_process_events();
445
446      if (owl_global_is_aimloggedin(&g)) {
447        if (owl_timer_is_expired(owl_global_get_aim_buddyinfo_timer(&g))) {
448          /* owl_buddylist_request_idletimes(owl_global_get_buddylist(&g)); */
449          owl_timer_reset(owl_global_get_aim_buddyinfo_timer(&g));
450        }
451      }
452    }
453
454    owl_perlconfig_mainloop();
455
456    /* little hack */
457    now=time(NULL);
458    today=localtime(&now);
459    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
460      if (time(NULL)>nexttime) {
461        if (nexttimediff==1) {
462          nexttimediff=10;
463        } else {
464          nexttimediff=1;
465        }
466        nexttime+=nexttimediff;
467        owl_hack_animate();
468      }
469    }
470
471    owl_zephyr_process_events();
472   
473    /* Grab incoming messages. */
474    newmsgs=0;
475    while(owl_global_messagequeue_pending(&g)) {
476
477      m = owl_global_messagequeue_popmsg(&g);
478
479      if(owl_process_message(m))
480        newmsgs = 1;
481    }
482
483    /* is it time to check zbuddies? */
484    if (owl_global_is_pseudologins(&g)) {
485      if (owl_timer_is_expired(owl_global_get_zephyr_buddycheck_timer(&g))) {
486        owl_function_debugmsg("Doing zephyr buddy check");
487        owl_function_zephyr_buddy_check(1);
488        owl_timer_reset(owl_global_get_zephyr_buddycheck_timer(&g));
489      }
490    }
491
492    /* dispatch any muxevents */
493    owl_muxevents_dispatch(owl_global_get_muxevents(&g), 0);
494
495    /* follow the last message if we're supposed to */
496    if (newmsgs && followlast) {
497      owl_function_lastmsg_noredisplay();
498    }
499
500    /* do the newmsgproc thing */
501    if (newmsgs) {
502      owl_function_do_newmsgproc();
503    }
504   
505    /* redisplay if necessary */
506    /* this should be optimized to not run if the new messages won't be displayed */
507    if (newmsgs) {
508      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
509      sepbar(NULL);
510      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
511        owl_popwin_refresh(owl_global_get_popwin(&g));
512        /* TODO: this is a broken kludge */
513        if (owl_global_get_viewwin(&g)) {
514          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
515        }
516      }
517      owl_global_set_needrefresh(&g);
518    }
519
520    /* if a popwin just came up, refresh it */
521    pw=owl_global_get_popwin(&g);
522    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
523      owl_popwin_refresh(pw);
524      owl_popwin_no_needs_first_refresh(pw);
525      owl_global_set_needrefresh(&g);
526      /* TODO: this is a broken kludge */
527      if (owl_global_get_viewwin(&g)) {
528        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
529      }
530    }
531
532    /* update the terminal if we need to */
533    if (owl_global_is_needrefresh(&g)) {
534      /* leave the cursor in the appropriate window */
535      if (owl_global_is_typwin_active(&g)) {
536        owl_function_set_cursor(typwin);
537      } else {
538        owl_function_set_cursor(sepwin);
539      }
540      doupdate();
541      owl_global_set_noneedrefresh(&g);
542    }
543
544    /* Handle all keypresses.  If no key has been pressed, sleep for a
545     * little bit, but otherwise do not.  This lets input be grabbed
546     * as quickly as possbile */
547    j=wgetch(typwin);
548    if (j==ERR) {
549      usleep(10);
550    } else {
551      owl_global_update_lastinputtime(&g);
552      /* find and activate the current keymap.
553       * TODO: this should really get fixed by activating
554       * keymaps as we switch between windows...
555       */
556      if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
557        owl_context_set_popless(owl_global_get_context(&g), 
558                                owl_global_get_viewwin(&g));
559        owl_function_activate_keymap("popless");
560      } else if (owl_global_is_typwin_active(&g) 
561                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
562        /*
563          owl_context_set_editline(owl_global_get_context(&g), tw);
564          owl_function_activate_keymap("editline");
565        */
566      } else if (owl_global_is_typwin_active(&g) 
567                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
568        owl_context_set_editmulti(owl_global_get_context(&g), tw);
569        owl_function_activate_keymap("editmulti");
570      } else {
571        owl_context_set_recv(owl_global_get_context(&g));
572        owl_function_activate_keymap("recv");
573      }
574      /* now actually handle the keypress */
575      ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
576      if (ret!=0 && ret!=1) {
577        owl_function_makemsg("Unable to handle keypress");
578      }
579    }
580
581    /* Log any error signals */
582    {
583      siginfo_t si;
584      int signum;
585      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
586        owl_function_error("Got unexpected signal: %d %s  (code: %d band: %d  errno: %d)", 
587                           signum, signum==SIGPIPE?"SIGPIPE":"SIG????",
588                           si.si_code, si.si_band, si.si_errno);
589      }
590    }
591
592  }
593}
594
595/*
596 * Process a new message passed to us on the message queue from some
597 * protocol. This includes adding it to the message list, updating the
598 * view and scrolling if appropriate, logging it, and so on.
599 *
600 * Either a pointer is kept to the message internally, or it is freed
601 * if unneeded. The caller no longer ``owns'' the message's memory.
602 *
603 * Returns 1 if the message was added to the message list, and 0 if it
604 * was ignored due to user settings or otherwise.
605 */
606int owl_process_message(owl_message *m) {
607  owl_filter *f;
608  /* if this message it on the puntlist, nuke it and continue */
609  if (owl_global_message_is_puntable(&g, m)) {
610    owl_message_free(m);
611    return 0;
612  }
613
614  /*  login or logout that should be ignored? */
615  if (owl_global_is_ignorelogins(&g)
616      && owl_message_is_loginout(m)) {
617    owl_message_free(m);
618    return 0;
619  }
620
621  if (!owl_global_is_displayoutgoing(&g)
622      && owl_message_is_direction_out(m)) {
623    owl_message_free(m);
624    return 0;
625  }
626
627  /* add it to the global list */
628  owl_messagelist_append_element(owl_global_get_msglist(&g), m);
629  /* add it to any necessary views; right now there's only the current view */
630  owl_view_consider_message(owl_global_get_current_view(&g), m);
631
632  if(owl_message_is_direction_in(m)) {
633    /* let perl know about it*/
634    owl_perlconfig_getmsg(m, 0, NULL);
635
636    /* do we need to autoreply? */
637    if (owl_global_is_zaway(&g) && !owl_message_get_attribute_value(m, "isauto")) {
638      if (owl_message_is_type_zephyr(m)) {
639        owl_zephyr_zaway(m);
640      } else if (owl_message_is_type_aim(m)) {
641        if (owl_message_is_private(m)) {
642          owl_function_send_aimawymsg(owl_message_get_sender(m), owl_global_get_zaway_msg(&g));
643        }
644      }
645    }
646
647    /* ring the bell if it's a personal */
648    if (!strcmp(owl_global_get_personalbell(&g), "on")) {
649      if (!owl_message_is_loginout(m) &&
650          !owl_message_is_mail(m) &&
651          owl_message_is_personal(m)) {
652        owl_function_beep();
653      }
654    } else if (!strcmp(owl_global_get_personalbell(&g), "off")) {
655      /* do nothing */
656    } else {
657      f=owl_global_get_filter(&g, owl_global_get_personalbell(&g));
658      if (f && owl_filter_message_match(f, m)) {
659        owl_function_beep();
660      }
661    }
662
663    /* if it matches the alert filter, do the alert action */
664    f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
665    if (f && owl_filter_message_match(f, m)) {
666      owl_function_command(owl_global_get_alert_action(&g));
667    }
668
669    /* if it's a zephyr login or logout, update the zbuddylist */
670    if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
671      if (owl_message_is_login(m)) {
672        owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
673      } else if (owl_message_is_logout(m)) {
674        owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
675      } else {
676        owl_function_error("Internal error: received login notice that is neither login nor logout");
677      }
678    }
679
680    /* check for burning ears message */
681    /* this is an unsupported feature */
682    if (owl_global_is_burningears(&g) && owl_message_is_burningears(m)) {
683      char *buff;
684      buff = owl_sprintf("@i(Burning ears message on class %s)", owl_message_get_class(m));
685      owl_function_adminmsg(buff, "");
686      owl_free(buff);
687      owl_function_beep();
688    }
689  }
690
691  /* log the message if we need to */
692  owl_log_message(m);
693
694  return 1;
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}
713
714void usage()
715{
716  fprintf(stderr, "Owl version %s\n", OWL_VERSION_STRING);
717  fprintf(stderr, "Usage: owl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-s <confdir>] [-t <ttyname>]\n");
718  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
719  fprintf(stderr, "  -d      enable debugging\n");
720  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
721  fprintf(stderr, "  -v      print the Owl version number and exit\n");
722  fprintf(stderr, "  -h      print this help message\n");
723  fprintf(stderr, "  -c      specify an alternate config file\n");
724  fprintf(stderr, "  -s      specify an alternate config dir (default ~/.owl)\n");
725  fprintf(stderr, "  -t      set the tty name\n");
726}
727
728#if OWL_STDERR_REDIR
729
730/* Replaces stderr with a pipe so that we can read from it.
731 * Returns the fd of the pipe from which stderr can be read. */
732int stderr_replace(void)
733{
734  int pipefds[2];
735  if (0 != pipe(pipefds)) {
736    perror("pipe");
737    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
738    return -1;
739  }
740    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
741  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
742    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
743    perror("dup2");
744    return -1;
745  }
746  return pipefds[0];
747}
748
749/* Sends stderr (read from rfd) messages to the error console */
750void stderr_redirect_handler(int handle, int rfd, int eventmask, void *data) 
751{
752  int navail, bread;
753  char *buf;
754  /*owl_function_debugmsg("stderr_redirect: called with rfd=%d\n", rfd);*/
755  if (rfd<0) return;
756  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
757    return;
758  }
759  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
760  if (navail<=0) return;
761  if (navail>256) { navail = 256; }
762  buf = owl_malloc(navail+1);
763  bread = read(rfd, buf, navail);
764  if (buf[navail-1] != '\0') {
765    buf[navail] = '\0';
766  }
767  owl_function_error("Err: %s", buf);
768  owl_free(buf);
769}
770
771#endif /* OWL_STDERR_REDIR */
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