source: owl.c @ b0430a6

barnowl_perlaimdebianowlrelease-1.10release-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since b0430a6 was 5a95b69, checked in by James M. Kretchmar <kretch@mit.edu>, 21 years ago
New code for getting users from .anyfile Added the 'pseudologins' variable, and code to do it new attributes 'pseudo' 'logintty' and 'loginhost'
  • Property mode set to 100644
File size: 22.3 KB
Line 
1/*
2 * Copyright 2001 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that the above copyright notice and this
7 * permission notice appear in all copies and in supporting
8 * documentation.  No representation is made about the suitability of
9 * this software for any purpose.  It is provided "as is" without
10 * express or implied warranty.
11 */
12
13#include <stdio.h>
14#include <unistd.h>
15#include <stdlib.h>
16#include <string.h>
17#include <signal.h>
18#include <time.h>
19#include <sys/param.h>
20#include <sys/types.h>
21#include <sys/stat.h>
22#include "owl.h"
23
24#if OWL_STDERR_REDIR
25#ifdef HAVE_SYS_IOCTL_H
26#include <sys/ioctl.h>
27#endif
28#ifdef HAVE_SYS_FILIO_H
29#include <sys/filio.h>
30#endif
31int stderr_replace(void);
32void stderr_redirect(int rfd);
33#endif
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 j, ret, initialsubs, debug, argcsave, followlast;
45  int newmsgs, zpendcount, nexttimediff;
46  struct sigaction sigact;
47  char *configfile, *tty, *perlout, *perlerr, **argvsave, buff[LINE], startupmsg[LINE];
48  owl_filter *f;
49  owl_style *s;
50  time_t nexttime, now;
51  struct tm *today;
52  char *dir;
53#ifdef HAVE_LIBZEPHYR
54  ZNotice_t notice;
55#endif
56#if OWL_STDERR_REDIR
57  int newstderr;
58#endif
59
60  argcsave=argc;
61  argvsave=argv;
62  configfile=NULL;
63  tty=NULL;
64  debug=0;
65  initialsubs=1;
66  if (argc>0) {
67    argv++;
68    argc--;
69  }
70  while (argc>0) {
71    if (!strcmp(argv[0], "-n")) {
72      initialsubs=0;
73      argv++;
74      argc--;
75    } else if (!strcmp(argv[0], "-c")) {
76      if (argc<2) {
77        fprintf(stderr, "Too few arguments to -c\n");
78        usage();
79        exit(1);
80      }
81      configfile=argv[1];
82      argv+=2;
83      argc-=2;
84    } else if (!strcmp(argv[0], "-t")) {
85      if (argc<2) {
86        fprintf(stderr, "Too few arguments to -t\n");
87        usage();
88        exit(1);
89      }
90      tty=argv[1];
91      argv+=2;
92      argc-=2;
93    } else if (!strcmp(argv[0], "-d")) {
94      debug=1;
95      argv++;
96      argc--;
97    } else if (!strcmp(argv[0], "-D")) {
98      debug=1;
99      unlink(OWL_DEBUG_FILE);
100      argv++;
101      argc--;
102    } else if (!strcmp(argv[0], "-v")) {
103      printf("This is owl version %s\n", OWL_VERSION_STRING);
104      exit(0);
105    } else {
106      fprintf(stderr, "Uknown argument\n");
107      usage();       
108      exit(1);
109    }
110  }
111
112#ifdef HAVE_LIBZEPHYR
113  /* zephyr init */
114  ret=owl_zephyr_initialize();
115  if (ret) {
116    exit(1);
117  }
118#endif
119 
120  /* signal handler */
121  /*sigact.sa_handler=sig_handler;*/
122  sigact.sa_sigaction=sig_handler;
123  sigemptyset(&sigact.sa_mask);
124  sigact.sa_flags=SA_SIGINFO;
125  sigaction(SIGWINCH, &sigact, NULL);
126  sigaction(SIGALRM, &sigact, NULL);
127  sigaction(SIGPIPE, &sigact, NULL);
128
129  /* screen init */
130  if (!getenv("TERMINFO")) {
131    sprintf(buff, "TERMINFO=%s", TERMINFO);
132    putenv(buff);
133    owl_function_debugmsg("startup: setting TERMINFO to %s", TERMINFO);
134  } else {
135    owl_function_debugmsg("startup: leaving TERMINFO as %s from envrionment", getenv("TERMINFO"));
136  }
137  initscr();
138  start_color();
139#ifdef HAVE_USE_DEFAULT_COLORS
140  use_default_colors();
141#endif
142  raw();
143  noecho();
144
145  /* define simple color pairs */
146  if (has_colors() && COLOR_PAIRS>=8) {
147    init_pair(OWL_COLOR_BLACK,   COLOR_BLACK,   -1);
148    init_pair(OWL_COLOR_RED,     COLOR_RED,     -1);
149    init_pair(OWL_COLOR_GREEN,   COLOR_GREEN,   -1);
150    init_pair(OWL_COLOR_YELLOW,  COLOR_YELLOW,  -1);
151    init_pair(OWL_COLOR_BLUE,    COLOR_BLUE,    -1);
152    init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, -1);
153    init_pair(OWL_COLOR_CYAN,    COLOR_CYAN,    -1);
154    init_pair(OWL_COLOR_WHITE,   COLOR_WHITE,   -1);
155  }
156
157  /* owl global init */
158  owl_global_init(&g);
159  if (debug) owl_global_set_debug_on(&g);
160  owl_function_debugmsg("startup: first available debugging message");
161  owl_global_set_startupargs(&g, argcsave, argvsave);
162#ifdef HAVE_LIBZEPHYR
163  owl_global_set_havezephyr(&g);
164#endif
165  owl_global_set_haveaim(&g);
166
167#if OWL_STDERR_REDIR
168  /* Do this only after we've started curses up... */
169  owl_function_debugmsg("startup: doing stderr redirection");
170  newstderr = stderr_replace();
171#endif   
172
173  /* create the owl directory, in case it does not exist */
174  owl_function_debugmsg("startup: creating owl directory, if not present");
175  dir=owl_sprintf("%s/%s", owl_global_get_homedir(&g), OWL_CONFIG_DIR);
176  mkdir(dir, S_IRWXU);
177  owl_free(dir);
178
179  /* set the tty, either from the command line, or by figuring it out */
180  owl_function_debugmsg("startup: setting tty name");
181  if (tty) {
182    owl_global_set_tty(&g, tty);
183  } else {
184    owl_global_set_tty(&g, owl_util_get_default_tty());
185  }
186
187  /* setup the built-in styles */
188  owl_function_debugmsg("startup: creating built-in styles");
189  s=owl_malloc(sizeof(owl_style));
190  owl_style_create_internal(s, "default", &owl_stylefunc_default,
191                            "Default message formatting");
192  owl_global_add_style(&g, s);
193
194  s=owl_malloc(sizeof(owl_style));
195  owl_style_create_internal(s, "basic", &owl_stylefunc_basic,
196                            "Basic message formatting.");
197  owl_global_add_style(&g, s);
198#if 0
199  s=owl_malloc(sizeof(owl_style));
200  owl_style_create_internal(s, "vt", &owl_stylefunc_vt,
201                            "VT message formatting.");
202  owl_global_add_style(&g, s);
203#endif
204  s=owl_malloc(sizeof(owl_style));
205  owl_style_create_internal(s, "oneline", &owl_stylefunc_oneline,
206                            "Formats for one-line-per-message");
207  owl_global_add_style(&g, s);
208
209  /* setup the default filters */
210  /* the personal filter will need to change again when AIM chat's are
211   *  included.  Also, there should be an %aimme% */
212  owl_function_debugmsg("startup: creating default filters");
213  f=owl_malloc(sizeof(owl_filter));
214  owl_filter_init_fromstring(f, "personal", "( type ^zephyr$ "
215                             "and class ^message$ and instance ^personal$ "
216                             "and ( recipient ^%me%$ or sender ^%me%$ ) ) "
217                             "or ( type ^aim$ and login ^none$ )");
218  owl_list_append_element(owl_global_get_filterlist(&g), f);
219
220  f=owl_malloc(sizeof(owl_filter));
221  owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )");
222  owl_list_append_element(owl_global_get_filterlist(&g), f);
223
224  f=owl_malloc(sizeof(owl_filter));
225  owl_filter_init_fromstring(f, "ping", "opcode ^ping$");
226  owl_list_append_element(owl_global_get_filterlist(&g), f);
227
228  f=owl_malloc(sizeof(owl_filter));
229  owl_filter_init_fromstring(f, "auto", "opcode ^auto$");
230  owl_list_append_element(owl_global_get_filterlist(&g), f);
231
232  f=owl_malloc(sizeof(owl_filter));
233  owl_filter_init_fromstring(f, "login", "not login ^none$");
234  owl_list_append_element(owl_global_get_filterlist(&g), f);
235
236  f=owl_malloc(sizeof(owl_filter));
237  owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$");
238  owl_list_append_element(owl_global_get_filterlist(&g), f);
239
240  f=owl_malloc(sizeof(owl_filter));
241  owl_filter_init_fromstring(f, "out", "direction ^out$");
242  owl_list_append_element(owl_global_get_filterlist(&g), f);
243
244  f=owl_malloc(sizeof(owl_filter));
245  owl_filter_init_fromstring(f, "aim", "type ^aim$");
246  owl_list_append_element(owl_global_get_filterlist(&g), f);
247
248  f=owl_malloc(sizeof(owl_filter));
249  owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$");
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, "none", "false");
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, "all", "true");
258  owl_list_append_element(owl_global_get_filterlist(&g), f);
259
260  /* set the current view */
261  owl_function_debugmsg("startup: setting the current view");
262  owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default"));
263
264  /* AIM init */
265  owl_function_debugmsg("startup: doing AIM initialization");
266  owl_aim_init();
267
268  /* process the startup file */
269  owl_function_debugmsg("startup: processing startup file");
270  owl_function_source(NULL);
271
272  /* read the config file */
273  owl_function_debugmsg("startup: processing config file");
274  owl_context_set_readconfig(owl_global_get_context(&g));
275  perlerr=owl_perlconfig_readconfig(configfile);
276  if (perlerr) {
277    endwin();
278    fprintf(stderr, "\nError parsing configfile: %s\n", perlerr);
279    exit(1);
280  }
281
282  /* if the config defines a formatting function, add 'perl' as a style */
283  if (owl_global_is_config_format(&g)) {
284    owl_function_debugmsg("Found perl formatting");
285    s=owl_malloc(sizeof(owl_style));
286    owl_style_create_perl(s, "perl", "owl::_format_msg_legacy_wrap",
287                          "User-defined perl style that calls owl::format_msg"
288                          "with legacy global variable support");
289    owl_global_add_style(&g, s);
290    owl_global_set_default_style(&g, "perl");
291  }
292
293  /* execute the startup function in the configfile */
294  owl_function_debugmsg("startup: executing perl startup, if applicable");
295  perlout = owl_perlconfig_execute("owl::startup();");
296  if (perlout) owl_free(perlout);
297 
298  /* hold on to the window names for convenience */
299  msgwin=owl_global_get_curs_msgwin(&g);
300  recwin=owl_global_get_curs_recwin(&g);
301  sepwin=owl_global_get_curs_sepwin(&g);
302  typwin=owl_global_get_curs_typwin(&g);
303  tw=owl_global_get_typwin(&g);
304
305  /* welcome message */
306  owl_function_debugmsg("startup: creating splash message");
307  strcpy(startupmsg, "-----------------------------------------------------------------------\n");
308  sprintf(buff,      "Welcome to Owl version %s.  Press 'h' for on-line help. \n", OWL_VERSION_STRING);
309  strcat(startupmsg, buff);
310  strcat(startupmsg, "                                                                       \n");
311  strcat(startupmsg, "If you would like to receive release announcements about Owl you can   \n");
312  strcat(startupmsg, "join the owl-users@mit.edu mailing list at http://web.mit.edu/ktools/  \n");
313  strcat(startupmsg, "                                                                 ^ ^   \n");
314  strcat(startupmsg, "                                                                 OvO   \n");
315  strcat(startupmsg, "Please report any bugs or suggestions to bug-owl@mit.edu        (   )  \n");
316  strcat(startupmsg, "-----------------------------------------------------------------m-m---\n");
317  owl_function_adminmsg("", startupmsg);
318  sepbar(NULL);
319
320  wrefresh(sepwin);
321
322  /* load zephyr subs */
323  if (initialsubs) {
324    owl_function_debugmsg("startup: loading initial zephyr subs");
325    /* load normal subscriptions */
326    ret=owl_zephyr_loadsubs(NULL);
327    if (ret==-1) {
328      owl_function_adminmsg("", "Error loading zephyr subscriptions, file inaccessable");
329    } else if (ret!=0) {
330      owl_function_adminmsg("", "Error loading zephyr subscriptions");
331    }
332   
333    if (ret!=-1) {
334      owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
335    }
336
337    /* load login subscriptions */
338    if (owl_global_is_loginsubs(&g)) {
339      owl_function_debugmsg("startup: loading login subs");
340      owl_function_loadloginsubs(NULL);
341    }
342  }
343
344  /* First buddy check to sync the list without notifications */
345  owl_function_debugmsg("startup: doing initial zephyr buddy check");
346  owl_function_zephyr_buddy_check(0);
347
348  /* set the startup and default style, based on userclue and presence of a
349   * formatting function */
350  owl_function_debugmsg("startup: setting startup and default style");
351  if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) {
352    /* the style was set by the user: leave it alone */
353  } else if (owl_global_is_config_format(&g)) {
354    owl_global_set_default_style(&g, "perl");
355  } else if (owl_global_is_userclue(&g, OWL_USERCLUE_CLASSES)) {
356    owl_global_set_default_style(&g, "default");
357  } else {
358    owl_global_set_default_style(&g, "basic");
359  }
360
361  /* zlog in if we need to */
362  if (owl_global_is_startuplogin(&g)) {
363    owl_function_debugmsg("startup: doing zlog in");
364    owl_zephyr_zlog_in();
365  }
366
367  owl_function_debugmsg("startup: set style for the view");
368  owl_view_set_style(owl_global_get_current_view(&g), 
369                     owl_global_get_style_by_name(&g, owl_global_get_default_style(&g)));   
370
371  owl_function_debugmsg("startup: setting context interactive");
372  owl_context_set_interactive(owl_global_get_context(&g));
373
374  nexttimediff=10;
375  nexttime=time(NULL);
376
377  owl_function_debugmsg("startup: entering main loop");
378  /* main loop */
379  while (1) {
380
381    /* if a resize has been scheduled, deal with it */
382    owl_global_resize(&g, 0, 0);
383
384    /* these are here in case a resize changes the windows */
385    msgwin=owl_global_get_curs_msgwin(&g);
386    recwin=owl_global_get_curs_recwin(&g);
387    sepwin=owl_global_get_curs_sepwin(&g);
388    typwin=owl_global_get_curs_typwin(&g);
389
390    followlast=owl_global_should_followlast(&g);
391   
392    /* Do AIM stuff */
393    if (owl_global_is_doaimevents(&g)) {
394      owl_aim_process_events();
395
396      if (owl_global_is_aimloggedin(&g)) {
397        if (owl_timer_is_expired(owl_global_get_aim_buddyinfo_timer(&g))) {
398          /* owl_buddylist_request_idletimes(owl_global_get_buddylist(&g)); */
399          owl_timer_reset(owl_global_get_aim_buddyinfo_timer(&g));
400        }
401      }
402    }
403
404    /* little hack */
405    now=time(NULL);
406    today=localtime(&now);
407    if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) {
408      if (time(NULL)>nexttime) {
409        if (nexttimediff==1) {
410          nexttimediff=10;
411        } else {
412          nexttimediff=1;
413        }
414        nexttime+=nexttimediff;
415        owl_hack_animate();
416      }
417    }
418
419    /* Grab incoming messages. */
420    newmsgs=0;
421    zpendcount=0;
422    while(owl_zephyr_zpending() || owl_global_messagequeue_pending(&g)) {
423#ifdef HAVE_LIBZEPHYR
424      struct sockaddr_in from;
425#endif
426      owl_message *m=NULL;
427      owl_filter *f;
428
429      /* grab the new message, stick it in 'm' */
430      if (owl_zephyr_zpending()) {
431#ifdef HAVE_LIBZEPHYR
432        /* grab a zephyr notice, but if we've done 20 without stopping,
433           take a break to process keystrokes etc. */
434        if (zpendcount>20) break;
435        ZReceiveNotice(&notice, &from);
436        zpendcount++;
437       
438        /* is this an ack from a zephyr we sent? */
439        if (owl_zephyr_notice_is_ack(&notice)) {
440          owl_zephyr_handle_ack(&notice);
441          continue;
442        }
443       
444        /* if it's a ping and we're not viewing pings then skip it */
445        if (!owl_global_is_rxping(&g) && !strcasecmp(notice.z_opcode, "ping")) {
446          continue;
447        }
448
449        /* create the new message */
450        m=owl_malloc(sizeof(owl_message));
451        owl_message_create_from_znotice(m, &notice);
452#endif
453      } else if (owl_global_messagequeue_pending(&g)) {
454        m=owl_global_messageuque_popmsg(&g);
455      }
456     
457      /* if this message it on the puntlist, nuke it and continue */
458      if (owl_global_message_is_puntable(&g, m)) {
459        owl_message_free(m);
460        continue;
461      }
462
463      /* otherwise add it to the global list */
464      owl_messagelist_append_element(owl_global_get_msglist(&g), m);
465      newmsgs=1;
466
467      /* let the config know the new message has been received */
468      owl_perlconfig_getmsg(m, 0, NULL);
469
470      /* add it to any necessary views; right now there's only the current view */
471      owl_view_consider_message(owl_global_get_current_view(&g), m);
472
473      /* do we need to autoreply? */
474      if (owl_global_is_zaway(&g)) {
475        if (owl_message_is_type_zephyr(m)) {
476          owl_zephyr_zaway(m);
477        } else if (owl_message_is_type_aim(m)) {
478          /* can't do this, there's no mechanism not to start a loop */
479          /* owl_aim_send_im(owl_message_get_sender(m), owl_global_get_zaway_msg(&g)); */
480        }
481      }
482
483      /* ring the bell if it's a personal */
484      if (owl_global_is_personalbell(&g) &&
485          !owl_message_is_loginout(m) &&
486          !owl_message_is_mail(m) &&
487          owl_message_is_private(m)) {
488        owl_function_beep();
489      }
490
491      /* if it matches the alert filter, do the alert action */
492      f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g));
493      if (f && owl_filter_message_match(f, m)) {
494        owl_function_command(owl_global_get_alert_action(&g));
495      }
496
497      /* if it's a zephyr login or logout, update the zbuddylist */
498      if (owl_message_is_type_zephyr(m) && owl_message_is_loginout(m)) {
499        if (owl_message_is_login(m)) {
500          owl_zbuddylist_adduser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
501        } else if (owl_message_is_logout(m)) {
502          owl_zbuddylist_deluser(owl_global_get_zephyr_buddylist(&g), owl_message_get_sender(m));
503        } else {
504          owl_function_error("Internal error: received login notice that is neither login nor logout");
505        }
506      }
507
508      /* check for burning ears message */
509      /* this is an unsupported feature */
510      if (owl_global_is_burningears(&g) && owl_message_is_burningears(m)) {
511        char *buff;
512        buff = owl_sprintf("@i(Burning ears message on class %s)", owl_message_get_class(m));
513        owl_function_adminmsg(buff, "");
514        owl_free(buff);
515        owl_function_beep();
516      }
517
518      /* log the message if we need to */
519      if (owl_global_is_logging(&g) || owl_global_is_classlogging(&g)) {
520        owl_log_incoming(m);
521      }
522    }
523
524    /* is it time to check zbuddies? */
525    if (owl_global_is_pseudologins(&g)) {
526      if (owl_timer_is_expired(owl_global_get_zephyr_buddycheck_timer(&g))) {
527        owl_function_debugmsg("Doing zephyr buddy check");
528        owl_function_zephyr_buddy_check(1);
529        owl_timer_reset(owl_global_get_zephyr_buddycheck_timer(&g));
530      }
531    }
532
533    /* follow the last message if we're supposed to */
534    if (newmsgs && followlast) {
535      owl_function_lastmsg_noredisplay();
536    }
537
538    /* do the newmsgproc thing */
539    if (newmsgs) {
540      owl_function_do_newmsgproc();
541    }
542   
543    /* redisplay if necessary */
544    /* this should be optimized to not run if the new messages won't be displayed */
545    if (newmsgs) {
546      owl_mainwin_redisplay(owl_global_get_mainwin(&g));
547      sepbar(NULL);
548      if (owl_popwin_is_active(owl_global_get_popwin(&g))) {
549        owl_popwin_refresh(owl_global_get_popwin(&g));
550        /* TODO: this is a broken kludge */
551        if (owl_global_get_viewwin(&g)) {
552          owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
553        }
554      }
555      owl_global_set_needrefresh(&g);
556    }
557
558    /* if a popwin just came up, refresh it */
559    pw=owl_global_get_popwin(&g);
560    if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) {
561      owl_popwin_refresh(pw);
562      owl_popwin_no_needs_first_refresh(pw);
563      owl_global_set_needrefresh(&g);
564      /* TODO: this is a broken kludge */
565      if (owl_global_get_viewwin(&g)) {
566        owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0);
567      }
568    }
569
570    /* update the terminal if we need to */
571    if (owl_global_is_needrefresh(&g)) {
572      /* leave the cursor in the appropriate window */
573      if (owl_global_is_typwin_active(&g)) {
574        owl_function_set_cursor(typwin);
575      } else {
576        owl_function_set_cursor(sepwin);
577      }
578      doupdate();
579      owl_global_set_noneedrefresh(&g);
580    }
581
582    /* Handle all keypresses.  If no key has been pressed, sleep for a
583     * little bit, but otherwise do not.  This lets input be grabbed
584     * as quickly as possbile */
585    j=wgetch(typwin);
586    if (j==ERR) {
587      usleep(10);
588    } else {
589      /* find and activate the current keymap.
590       * TODO: this should really get fixed by activating
591       * keymaps as we switch between windows...
592       */
593      if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) {
594        owl_context_set_popless(owl_global_get_context(&g), 
595                                owl_global_get_viewwin(&g));
596        owl_function_activate_keymap("popless");
597      } else if (owl_global_is_typwin_active(&g) 
598                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) {
599        /*
600          owl_context_set_editline(owl_global_get_context(&g), tw);
601          owl_function_activate_keymap("editline");
602        */
603      } else if (owl_global_is_typwin_active(&g) 
604                 && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) {
605        owl_context_set_editmulti(owl_global_get_context(&g), tw);
606        owl_function_activate_keymap("editmulti");
607      } else {
608        owl_context_set_recv(owl_global_get_context(&g));
609        owl_function_activate_keymap("recv");
610      }
611      /* now actually handle the keypress */
612      ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j);
613      if (ret!=0 && ret!=1) {
614        owl_function_makemsg("Unable to handle keypress");
615      }
616    }
617
618#if OWL_STDERR_REDIR
619    stderr_redirect(newstderr);
620#endif   
621
622    /* Log any error signals */
623    {
624      siginfo_t si;
625      int signum;
626      if ((signum = owl_global_get_errsignal_and_clear(&g, &si)) > 0) {
627        owl_function_error("Got unexpected signal: %d %s  (code: %d  fd: %d  band: %d  errno: %d)", 
628                           signum, signum==SIGPIPE?"SIGPIPE":"",
629                           si.si_code, si.si_fd, si.si_band, si.si_errno);
630      }
631    }
632
633  }
634}
635
636void sig_handler(int sig, siginfo_t *si, void *data)
637{
638  if (sig==SIGWINCH) {
639    /* we can't inturrupt a malloc here, so it just sets a flag
640     * schedulding a resize for later
641     */
642    owl_function_resize();
643  } else if (sig==SIGPIPE) {
644    /* Set a flag and some info that we got the sigpipe
645     * so we can record that we got it and why... */
646    owl_global_set_errsignal(&g, sig, si);
647  }
648
649}
650
651void usage()
652{
653  fprintf(stderr, "Owl version %s\n", OWL_VERSION_STRING);
654  fprintf(stderr, "Usage: owl [-n] [-d] [-D] [-v] [-h] [-c <configfile>] [-t <ttyname>]\n");
655  fprintf(stderr, "  -n      don't load zephyr subscriptions\n");
656  fprintf(stderr, "  -d      enable debugging\n");
657  fprintf(stderr, "  -D      enable debugging and delete previous debug file\n");
658  fprintf(stderr, "  -v      print the Owl version number and exit\n");
659  fprintf(stderr, "  -h      print this help message\n");
660  fprintf(stderr, "  -c      specify an alternate config file\n");
661  fprintf(stderr, "  -t      set the tty name\n");
662}
663
664#if OWL_STDERR_REDIR
665
666/* Replaces stderr with a pipe so that we can read from it.
667 * Returns the fd of the pipe from which stderr can be read. */
668int stderr_replace(void)
669{
670  int pipefds[2];
671  if (0 != pipe(pipefds)) {
672    perror("pipe");
673    owl_function_debugmsg("stderr_replace: pipe FAILED\n");
674    return -1;
675  }
676    owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]);
677  if (-1 == dup2(pipefds[1], 2 /*stderr*/)) {
678    owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno));
679    perror("dup2");
680    return -1;
681  }
682  return pipefds[0];
683}
684
685/* Sends stderr (read from rfd) messages to a file */
686void stderr_redirect(int rfd)
687{
688  int navail, bread;
689  char *buf;
690  /*owl_function_debugmsg("stderr_redirect: called with rfd=%d\n", rfd);*/
691  if (rfd<0) return;
692  if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) {
693    return;
694  }
695  /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/
696  if (navail<=0) return;
697  if (navail>256) { navail = 256; }
698  buf = owl_malloc(navail+1);
699  bread = read(rfd, buf, navail);
700  if (buf[navail-1] != '\0') {
701    buf[navail] = '\0';
702  }
703  owl_function_error("Err: %s", buf);
704  owl_free(buf);
705}
706
707#endif /* OWL_STDERR_REDIR */
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