source: zephyr.c @ 19cc0b7e

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Last change on this file since 19cc0b7e was a5e7ed6, checked in by Nelson Elhage <nelhage@mit.edu>, 13 years ago
Properly handle :load-subs in .owl/startup If :load-subs is called before we have Zephyr, save the list of subs we would have loaded and subscribe to them once we get a reply from the hostmaster.
  • Property mode set to 100644
File size: 30.3 KB
Line 
1#include <stdlib.h>
2#include <unistd.h>
3#include <sys/types.h>
4#include <sys/wait.h>
5#include <sys/stat.h>
6#include <string.h>
7#include "owl.h"
8
9static const char fileIdent[] = "$Id$";
10
11static GList *deferred_subs = NULL;
12typedef struct _owl_sub_list {                            /* noproto */
13  ZSubscription_t *subs;
14  int nsubs;
15} owl_sub_list;
16
17#ifdef HAVE_LIBZEPHYR
18Code_t ZResetAuthentication();
19#endif
20
21#define HM_SVC_FALLBACK         htons((unsigned short) 2104)
22
23#ifdef HAVE_LIBZEPHYR
24void owl_zephyr_initialize()
25{
26  int ret;
27  struct servent *sp;
28  struct sockaddr_in sin;
29  ZNotice_t req;
30  Code_t code;
31  owl_dispatch *dispatch;
32
33  /*
34   * Code modified from libzephyr's ZhmStat.c
35   *
36   * Modified to add the fd to our select loop, rather than hanging
37   * until we get an ack.
38   */
39
40  if ((ret = ZOpenPort(NULL)) != ZERR_NONE) {
41    owl_function_error("Error opening Zephyr port: %s", error_message(ret));
42    return;
43  }
44
45  (void) memset((char *)&sin, 0, sizeof(struct sockaddr_in));
46
47  sp = getservbyname(HM_SVCNAME, "udp");
48
49  sin.sin_port = (sp) ? sp->s_port : HM_SVC_FALLBACK;
50  sin.sin_family = AF_INET;
51
52  sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
53
54  (void) memset((char *)&req, 0, sizeof(req));
55  req.z_kind = STAT;
56  req.z_port = 0;
57  req.z_class = HM_STAT_CLASS;
58  req.z_class_inst = HM_STAT_CLIENT;
59  req.z_opcode = HM_GIMMESTATS;
60  req.z_sender = "";
61  req.z_recipient = "";
62  req.z_default_format = "";
63  req.z_message_len = 0;
64
65  if ((code = ZSetDestAddr(&sin)) != ZERR_NONE) {
66    owl_function_error("Initializing Zephyr: %s", error_message(code));
67    return;
68  }
69
70  if ((code = ZSendNotice(&req, ZNOAUTH)) != ZERR_NONE) {
71    owl_function_error("Initializing Zephyr: %s", error_message(code));
72    return;
73  }
74
75  dispatch = owl_malloc(sizeof(*dispatch));
76  dispatch->fd = ZGetFD();
77  dispatch->cfunc = owl_zephyr_finish_initialization;
78  dispatch->destroy = (void(*)(owl_dispatch*))owl_free;
79
80  owl_select_add_dispatch(dispatch);
81}
82
83void owl_zephyr_finish_initialization(owl_dispatch *d) {
84  Code_t code;
85
86  owl_select_remove_dispatch(d->fd);
87
88  ZClosePort();
89
90  if ((code = ZInitialize()) != ZERR_NONE) {
91    owl_function_error("Initializing Zephyr: %s", error_message(code));
92    return;
93  }
94
95  if ((code = ZOpenPort(NULL)) != ZERR_NONE) {
96    owl_function_error("Initializing Zephyr: %s", error_message(code));
97    return;
98  }
99
100  d = owl_malloc(sizeof(owl_dispatch));
101  d->fd = ZGetFD();
102  d->cfunc = &owl_zephyr_process_events;
103  d->destroy = NULL;
104  owl_select_add_dispatch(d);
105  owl_global_set_havezephyr(&g);
106
107  if(g.load_initial_subs) {
108    owl_zephyr_load_initial_subs();
109  }
110  while(deferred_subs != NULL) {
111    owl_sub_list *subs = deferred_subs->data;
112    owl_function_debugmsg("Loading %d deferred subs.", subs->nsubs);
113    owl_zephyr_loadsubs_helper(subs->subs, subs->nsubs);
114    deferred_subs = g_list_delete_link(deferred_subs, deferred_subs);
115    owl_free(subs);
116  }
117}
118
119void owl_zephyr_load_initial_subs() {
120  int ret, ret2;
121
122  owl_function_debugmsg("startup: loading initial zephyr subs");
123
124  /* load default subscriptions */
125  ret = owl_zephyr_loaddefaultsubs();
126
127  /* load subscriptions from subs file */
128  ret2 = owl_zephyr_loadsubs(NULL, 0);
129
130  if (ret || ret2) {
131    owl_function_error("Error loading zephyr subscriptions");
132  } else if (ret2!=-1) {
133    owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES);
134  }
135
136  /* load login subscriptions */
137  if (owl_global_is_loginsubs(&g)) {
138    owl_function_debugmsg("startup: loading login subs");
139    owl_function_loadloginsubs(NULL);
140  }
141}
142#else
143void owl_zephyr_initialize()
144{
145}
146#endif
147
148
149int owl_zephyr_shutdown()
150{
151#ifdef HAVE_LIBZEPHYR
152  if(owl_global_is_havezephyr(&g)) {
153    unsuball();
154    ZClosePort();
155  }
156#endif
157  return(0);
158}
159
160int owl_zephyr_zpending()
161{
162#ifdef HAVE_LIBZEPHYR
163  if(owl_global_is_havezephyr(&g))
164    return(ZPending());
165  else
166    return 0;
167#else
168  return(0);
169#endif
170}
171
172char *owl_zephyr_get_realm()
173{
174#ifdef HAVE_LIBZEPHYR
175  return(ZGetRealm());
176#else
177  return("");
178#endif
179}
180
181char *owl_zephyr_get_sender()
182{
183#ifdef HAVE_LIBZEPHYR
184  return(ZGetSender());
185#else
186  return("");
187#endif
188}
189
190#ifdef HAVE_LIBZEPHYR
191int owl_zephyr_loadsubs_helper(ZSubscription_t subs[], int count)
192{
193  int ret;
194  if (owl_global_is_havezephyr(&g)) {
195    int i;
196    /* sub without defaults */
197    if (ZSubscribeToSansDefaults(subs,count,0) != ZERR_NONE) {
198      owl_function_error("Error subscribing to zephyr notifications.");
199      ret=-2;
200    }
201
202    /* free stuff */
203    for (i=0; i<count; i++) {
204      owl_free(subs[i].zsub_class);
205      owl_free(subs[i].zsub_classinst);
206      owl_free(subs[i].zsub_recipient);
207    }
208
209    owl_free(subs);
210  } else {
211    owl_sub_list *s = owl_malloc(sizeof(owl_sub_list));
212    s->subs = subs;
213    s->nsubs = count;
214    deferred_subs = g_list_append(deferred_subs, s);
215  }
216
217  return ret;
218}
219#endif
220
221/* Load zephyr subscriptions form 'filename'.  If 'filename' is NULL,
222 * the default file $HOME/.zephyr.subs will be used.
223 *
224 * Returns 0 on success.  If the file does not exist, return -1 if
225 * 'error_on_nofile' is 1, otherwise return 0.  Return -1 if the file
226 * exists but can not be read.  Return -2 if there is a failure from
227 * zephyr to load the subscriptions.
228 */
229int owl_zephyr_loadsubs(char *filename, int error_on_nofile)
230{
231#ifdef HAVE_LIBZEPHYR
232  FILE *file;
233  char *tmp, *start;
234  char buffer[1024], subsfile[1024];
235  ZSubscription_t *subs;
236  int subSize = 1024;
237  int count, ret;
238  struct stat statbuff;
239
240  subs = owl_malloc(sizeof(ZSubscription_t) * subSize);
241  if (filename==NULL) {
242    sprintf(subsfile, "%s/%s", owl_global_get_homedir(&g), ".zephyr.subs");
243  } else {
244    strcpy(subsfile, filename);
245  }
246
247  ret=stat(subsfile, &statbuff);
248  if (ret) {
249    if (error_on_nofile==1) return(-1);
250    return(0);
251  }
252
253  ZResetAuthentication();
254  count=0;
255  file=fopen(subsfile, "r");
256  if (!file) return(-1);
257  while ( fgets(buffer, 1024, file)!=NULL ) {
258    if (buffer[0]=='#' || buffer[0]=='\n' || buffer[0]=='\n') continue;
259   
260    if (buffer[0]=='-') {
261      start=buffer+1;
262    } else {
263      start=buffer;
264    }
265   
266    if (count >= subSize) {
267      subSize *= 2;
268      subs = owl_realloc(subs, sizeof(ZSubscription_t) * subSize);
269    }
270   
271    /* add it to the list of subs */
272    if ((tmp=(char *) strtok(start, ",\n\r"))==NULL) continue;
273    subs[count].zsub_class=owl_strdup(tmp);
274    if ((tmp=(char *) strtok(NULL, ",\n\r"))==NULL) continue;
275    subs[count].zsub_classinst=owl_strdup(tmp);
276    if ((tmp=(char *) strtok(NULL, " \t\n\r"))==NULL) continue;
277    subs[count].zsub_recipient=owl_strdup(tmp);
278   
279    /* if it started with '-' then add it to the global punt list, and
280     * remove it from the list of subs. */
281    if (buffer[0]=='-') {
282      owl_function_zpunt(subs[count].zsub_class, subs[count].zsub_classinst, subs[count].zsub_recipient, 0);
283      owl_free(subs[count].zsub_class);
284      owl_free(subs[count].zsub_classinst);
285      owl_free(subs[count].zsub_recipient);
286    }
287    else {
288      count++;
289    }
290  }
291  fclose(file);
292
293  owl_zephyr_loadsubs_helper(subs, count);
294  return(ret);
295#else
296  return(0);
297#endif
298}
299
300int owl_zephyr_loaddefaultsubs()
301{
302#ifdef HAVE_LIBZEPHYR
303  ZSubscription_t subs[10];
304   
305  if (ZSubscribeTo(subs,0,0) != ZERR_NONE) {
306    owl_function_error("Error subscribing to default zephyr notifications.");
307    return(-1);
308  }
309  return(0);
310#else
311  return(0);
312#endif
313}
314
315int owl_zephyr_loadloginsubs(char *filename)
316{
317#ifdef HAVE_LIBZEPHYR
318  FILE *file;
319  ZSubscription_t *subs;
320  int numSubs = 100;
321  char subsfile[1024], buffer[1024];
322  int count, ret;
323  struct stat statbuff;
324
325  subs = owl_malloc(numSubs * sizeof(ZSubscription_t));
326
327  if (filename==NULL) {
328    sprintf(subsfile, "%s/%s", owl_global_get_homedir(&g), ".anyone");
329  } else {
330    strcpy(subsfile, filename);
331  }
332 
333  ret=stat(subsfile, &statbuff);
334  if (ret) return(0);
335
336  ret=0;
337
338  ZResetAuthentication();
339  count=0;
340  file=fopen(subsfile, "r");
341  if (file) {
342    while ( fgets(buffer, 1024, file)!=NULL ) {
343      if (buffer[0]=='#' || buffer[0]=='\n' || buffer[0]=='\n') continue;
344     
345      if (count == numSubs) {
346        numSubs *= 2;
347        subs = owl_realloc(subs, numSubs * sizeof(ZSubscription_t));
348      }
349
350      buffer[strlen(buffer)-1]='\0';
351      subs[count].zsub_class=owl_strdup("login");
352      subs[count].zsub_recipient=owl_strdup("*");
353      if (strchr(buffer, '@')) {
354        subs[count].zsub_classinst=owl_strdup(buffer);
355      } else {
356        subs[count].zsub_classinst=owl_sprintf("%s@%s", buffer, ZGetRealm());
357      }
358
359      count++;
360    }
361    fclose(file);
362  } else {
363    count=0;
364    ret=-1;
365  }
366
367  ret = owl_zephyr_loadsubs_helper(subs, count);
368  return(ret);
369#else
370  return(0);
371#endif
372}
373
374void unsuball()
375{
376#if HAVE_LIBZEPHYR
377  int ret;
378
379  ZResetAuthentication();
380  ret=ZCancelSubscriptions(0);
381  if (ret != ZERR_NONE) {
382    com_err("owl",ret,"while unsubscribing");
383  }
384#endif
385}
386
387int owl_zephyr_sub(char *class, char *inst, char *recip)
388{
389#ifdef HAVE_LIBZEPHYR
390  ZSubscription_t subs[5];
391
392  subs[0].zsub_class=class;
393  subs[0].zsub_classinst=inst;
394  subs[0].zsub_recipient=recip;
395
396  ZResetAuthentication();
397  if (ZSubscribeTo(subs,1,0) != ZERR_NONE) {
398    owl_function_error("Error subbing to <%s,%s,%s>", class, inst, recip);
399    return(-2);
400  }
401  return(0);
402#else
403  return(0);
404#endif
405}
406
407
408int owl_zephyr_unsub(char *class, char *inst, char *recip)
409{
410#ifdef HAVE_LIBZEPHYR
411  ZSubscription_t subs[5];
412
413  subs[0].zsub_class=class;
414  subs[0].zsub_classinst=inst;
415  subs[0].zsub_recipient=recip;
416
417  ZResetAuthentication();
418  if (ZUnsubscribeTo(subs,1,0) != ZERR_NONE) {
419    owl_function_error("Error unsubbing from <%s,%s,%s>", class, inst, recip);
420    return(-2);
421  }
422  return(0);
423#else
424  return(0);
425#endif
426}
427
428/* return a pointer to the data in the Jth field, (NULL terminated by
429 * definition).  Caller must free the return.
430 */
431#ifdef HAVE_LIBZEPHYR
432char *owl_zephyr_get_field(ZNotice_t *n, int j)
433{
434  int i, count, save;
435  char *out;
436
437  /* If there's no message here, just run along now */
438  if (n->z_message_len == 0)
439    return(owl_strdup(""));
440
441  count=save=0;
442  for (i=0; i<n->z_message_len; i++) {
443    if (n->z_message[i]=='\0') {
444      count++;
445      if (count==j) {
446        /* just found the end of the field we're looking for */
447        return(owl_strdup(n->z_message+save));
448      } else {
449        save=i+1;
450      }
451    }
452  }
453  /* catch the last field, which might not be null terminated */
454  if (count==j-1) {
455    out=owl_malloc(n->z_message_len-save+5);
456    memcpy(out, n->z_message+save, n->z_message_len-save);
457    out[n->z_message_len-save]='\0';
458    return(out);
459  }
460
461  return(owl_strdup(""));
462}
463
464char *owl_zephyr_get_field_as_utf8(ZNotice_t *n, int j)
465{
466  int i, count, save;
467
468  /* If there's no message here, just run along now */
469  if (n->z_message_len == 0)
470    return(owl_strdup(""));
471
472  count=save=0;
473  for (i = 0; i < n->z_message_len; i++) {
474    if (n->z_message[i]=='\0') {
475      count++;
476      if (count == j) {
477        /* just found the end of the field we're looking for */
478        return(owl_validate_or_convert(n->z_message + save));
479      } else {
480        save = i + 1;
481      }
482    }
483  }
484  /* catch the last field, which might not be null terminated */
485  if (count == j - 1) {
486    char *tmp, *out;
487    tmp = owl_malloc(n->z_message_len-save+5);
488    memcpy(tmp, n->z_message+save, n->z_message_len-save);
489    tmp[n->z_message_len-save]='\0';
490    out = owl_validate_or_convert(tmp);
491    owl_free(tmp);
492    return out;
493  }
494
495  return(owl_strdup(""));
496}
497#else
498char *owl_zephyr_get_field(void *n, int j)
499{
500  return(owl_strdup(""));
501}
502char *owl_zephyr_get_field_as_utf8(void *n, int j)
503{
504  return owl_zephyr_get_field(n, j);
505}
506#endif
507
508
509#ifdef HAVE_LIBZEPHYR
510int owl_zephyr_get_num_fields(ZNotice_t *n)
511{
512  int i, fields;
513
514  if(n->z_message_len == 0)
515    return 0;
516
517  fields=1;
518  for (i=0; i<n->z_message_len; i++) {
519    if (n->z_message[i]=='\0') fields++;
520  }
521 
522  return(fields);
523}
524#else
525int owl_zephyr_get_num_fields(void *n)
526{
527  return(0);
528}
529#endif
530
531#ifdef HAVE_LIBZEPHYR
532/* return a pointer to the message, place the message length in k
533 * caller must free the return
534 */
535char *owl_zephyr_get_message(ZNotice_t *n, owl_message *m)
536{
537  /* don't let ping messages have a body */
538  if (!strcasecmp(n->z_opcode, "ping")) {
539    return(owl_strdup(""));
540  }
541
542  /* deal with MIT NOC messages */
543  if (!strcasecmp(n->z_default_format, "@center(@bold(NOC Message))\n\n@bold(Sender:) $1 <$sender>\n@bold(Time:  ) $time\n\n@italic($opcode service on $instance $3.) $4\n")) {
544    char *msg, *field3, *field4;
545
546    field3 = owl_zephyr_get_field(n, 3);
547    field4 = owl_zephyr_get_field(n, 4);
548
549    msg = owl_sprintf("%s service on %s %s\n%s", n->z_opcode, n->z_class_inst, field3, field4);
550    owl_free(field3);
551    owl_free(field4);
552    if (msg) {
553      return msg;
554    }
555  }
556  /* deal with MIT Discuss messages */
557  else if (!strcasecmp(n->z_default_format, "New transaction [$1] entered in $2\nFrom: $3 ($5)\nSubject: $4") ||
558           !strcasecmp(n->z_default_format, "New transaction [$1] entered in $2\nFrom: $3\nSubject: $4")) {
559    char *msg, *field1, *field2, *field3, *field4, *field5;
560   
561    field1 = owl_zephyr_get_field(n, 1);
562    field2 = owl_zephyr_get_field(n, 2);
563    field3 = owl_zephyr_get_field(n, 3);
564    field4 = owl_zephyr_get_field(n, 4);
565    field5 = owl_zephyr_get_field(n, 5);
566   
567    msg = owl_sprintf("New transaction [%s] entered in %s\nFrom: %s (%s)\nSubject: %s", field1, field2, field3, field5, field4);
568    owl_free(field1);
569    owl_free(field2);
570    owl_free(field3);
571    owl_free(field4);
572    owl_free(field5);
573    if (msg) {
574      return msg;
575    }
576  }
577  /* deal with MIT Moira messages */
578  else if (!strcasecmp(n->z_default_format, "MOIRA $instance on $fromhost:\n $message\n")) {
579    char *msg, *field1;
580   
581    field1 = owl_zephyr_get_field(n, 1);
582   
583    msg = owl_sprintf("MOIRA %s on %s: %s", n->z_class_inst, owl_message_get_hostname(m), field1);
584    owl_free(field1);
585    if (msg) {
586      return msg;
587    }
588  }
589
590  if (owl_zephyr_get_num_fields(n) == 1) {
591    return(owl_zephyr_get_field(n, 1));
592  }
593  else {
594    return(owl_zephyr_get_field(n, 2));
595  }
596}
597#endif
598
599#ifdef HAVE_LIBZEPHYR
600char *owl_zephyr_get_zsig(ZNotice_t *n, int *k)
601{
602  /* return a pointer to the zsig if there is one */
603
604  /* message length 0? No zsig */
605  if (n->z_message_len==0) {
606    *k=0;
607    return("");
608  }
609
610  /* If there's only one field, no zsig */
611  if (owl_zephyr_get_num_fields(n) == 1) {
612    *k=0;
613    return("");
614  }
615
616  /* Everything else is field 1 */
617  *k=strlen(n->z_message);
618  return(n->z_message);
619}
620#else
621char *owl_zephyr_get_zsig(void *n, int *k)
622{
623  return("");
624}
625#endif
626
627int send_zephyr(char *opcode, char *zsig, char *class, char *instance, char *recipient, char *message)
628{
629#ifdef HAVE_LIBZEPHYR
630  int ret;
631  ZNotice_t notice;
632   
633  memset(&notice, 0, sizeof(notice));
634
635  ZResetAuthentication();
636
637  if (!zsig) zsig="";
638 
639  notice.z_kind=ACKED;
640  notice.z_port=0;
641  notice.z_class=class;
642  notice.z_class_inst=instance;
643  notice.z_sender=NULL;
644  if (!strcmp(recipient, "*") || !strcmp(recipient, "@")) {
645    notice.z_recipient="";
646    if (*owl_global_get_zsender(&g))
647        notice.z_sender=owl_global_get_zsender(&g);
648  } else {
649    notice.z_recipient=recipient;
650  }
651  notice.z_default_format="Class $class, Instance $instance:\nTo: @bold($recipient) at $time $date\nFrom: @bold{$1 <$sender>}\n\n$2";
652  if (opcode) notice.z_opcode=opcode;
653
654  notice.z_message_len=strlen(zsig)+1+strlen(message);
655  notice.z_message=owl_malloc(notice.z_message_len+10);
656  strcpy(notice.z_message, zsig);
657  memcpy(notice.z_message+strlen(zsig)+1, message, strlen(message));
658
659  /* ret=ZSendNotice(&notice, ZAUTH); */
660  ret=ZSrvSendNotice(&notice, ZAUTH, send_zephyr_helper);
661 
662  /* free then check the return */
663  owl_free(notice.z_message);
664  ZFreeNotice(&notice);
665  if (ret!=ZERR_NONE) {
666    owl_function_error("Error sending zephyr");
667    return(ret);
668  }
669  return(0);
670#else
671  return(0);
672#endif
673}
674
675#ifdef HAVE_LIBZEPHYR
676Code_t send_zephyr_helper(ZNotice_t *notice, char *buf, int len, int wait)
677{
678  return(ZSendPacket(buf, len, 0));
679}
680#endif
681
682void send_ping(char *to)
683{
684#ifdef HAVE_LIBZEPHYR
685  send_zephyr("PING", "", "MESSAGE", "PERSONAL", to, "");
686#endif
687}
688
689#ifdef HAVE_LIBZEPHYR
690void owl_zephyr_handle_ack(ZNotice_t *retnotice)
691{
692  char *tmp;
693 
694  /* if it's an HMACK ignore it */
695  if (retnotice->z_kind == HMACK) return;
696
697  if (retnotice->z_kind == SERVNAK) {
698    owl_function_error("Authorization failure sending zephyr");
699  } else if ((retnotice->z_kind != SERVACK) || !retnotice->z_message_len) {
700    owl_function_error("Detected server failure while receiving acknowledgement");
701  } else if (!strcmp(retnotice->z_message, ZSRVACK_SENT)) {
702    if (!strcasecmp(retnotice->z_opcode, "ping")) {
703      return;
704    } else if (!strcasecmp(retnotice->z_class, "message") &&
705               !strcasecmp(retnotice->z_class_inst, "personal")) {
706      tmp=short_zuser(retnotice->z_recipient);
707      owl_function_makemsg("Message sent to %s.", tmp);
708      free(tmp);
709    } else {
710      owl_function_makemsg("Message sent to -c %s -i %s\n", retnotice->z_class, retnotice->z_class_inst);
711    }
712  } else if (!strcmp(retnotice->z_message, ZSRVACK_NOTSENT)) {
713    #define BUFFLEN 1024
714    if (retnotice->z_recipient == NULL
715        || *retnotice->z_recipient == 0
716        || *retnotice->z_recipient == '@') {
717      char buff[BUFFLEN];
718      owl_function_error("No one subscribed to class %s", retnotice->z_class);
719      snprintf(buff, BUFFLEN, "Could not send message to class %s: no one subscribed.\n", retnotice->z_class);
720      owl_function_adminmsg("", buff);
721    } else {
722      char buff[BUFFLEN];
723      tmp = short_zuser(retnotice->z_recipient);
724      owl_function_error("%s: Not logged in or subscribing.", tmp);
725      if(strcmp(retnotice->z_class, "message")) {
726        snprintf(buff, BUFFLEN,
727                 "Could not send message to %s: "
728                 "not logged in or subscribing to class %s, instance %s.\n", 
729                 tmp,
730                 retnotice->z_class,
731                 retnotice->z_class_inst);
732      } else {
733        snprintf(buff, BUFFLEN,
734                 "Could not send message to %s: "
735                 "not logged in or subscribing to messages.\n",
736                 tmp);
737      }
738      owl_function_adminmsg("", buff);
739      owl_log_outgoing_zephyr_error(tmp, buff);
740      owl_free(tmp);
741    }
742  } else {
743    owl_function_error("Internal error on ack (%s)", retnotice->z_message);
744  }
745}
746#else
747void owl_zephyr_handle_ack(void *retnotice)
748{
749}
750#endif
751
752#ifdef HAVE_LIBZEPHYR
753int owl_zephyr_notice_is_ack(ZNotice_t *n)
754{
755  if (n->z_kind == SERVNAK || n->z_kind == SERVACK || n->z_kind == HMACK) {
756    if (!strcasecmp(n->z_class, LOGIN_CLASS)) return(0);
757    return(1);
758  }
759  return(0);
760}
761#else
762int owl_zephyr_notice_is_ack(void *n)
763{
764  return(0);
765}
766#endif
767 
768void owl_zephyr_zaway(owl_message *m)
769{
770#ifdef HAVE_LIBZEPHYR
771  char *tmpbuff, *myuser, *to;
772  owl_message *mout;
773 
774  /* bail if it doesn't look like a message we should reply to.  Some
775   * of this defined by the way zaway(1) works
776   */
777  if (strcasecmp(owl_message_get_class(m), "message")) return;
778  if (strcasecmp(owl_message_get_recipient(m), ZGetSender())) return;
779  if (!strcasecmp(owl_message_get_sender(m), "")) return;
780  if (!strcasecmp(owl_message_get_opcode(m), "ping")) return;
781  if (!strcasecmp(owl_message_get_opcode(m), "auto")) return;
782  if (!strcasecmp(owl_message_get_zsig(m), "Automated reply:")) return;
783  if (!strcasecmp(owl_message_get_sender(m), ZGetSender())) return;
784  if (owl_message_get_attribute_value(m, "isauto")) return;
785
786  if (owl_global_is_smartstrip(&g)) {
787    to=owl_zephyr_smartstripped_user(owl_message_get_sender(m));
788  } else {
789    to=owl_strdup(owl_message_get_sender(m));
790  }
791
792  send_zephyr("",
793              "Automated reply:",
794              owl_message_get_class(m),
795              owl_message_get_instance(m),
796              to,
797              owl_global_get_zaway_msg(&g));
798
799  myuser=short_zuser(to);
800  if (!strcasecmp(owl_message_get_instance(m), "personal")) {
801    tmpbuff = owl_sprintf("zwrite %s", myuser);
802  } else {
803    tmpbuff = owl_sprintf("zwrite -i %s %s", owl_message_get_instance(m), myuser);
804  }
805  owl_free(myuser);
806  owl_free(to);
807
808  /* display the message as an admin message in the receive window */
809  mout=owl_function_make_outgoing_zephyr(owl_global_get_zaway_msg(&g), tmpbuff, "Automated reply:");
810  owl_global_messagequeue_addmsg(&g, mout);
811  owl_free(tmpbuff);
812#endif
813}
814
815#ifdef HAVE_LIBZEPHYR
816void owl_zephyr_hackaway_cr(ZNotice_t *n)
817{
818  /* replace \r's with ' '.  Gross-ish */
819  int i;
820
821  for (i=0; i<n->z_message_len; i++) {
822    if (n->z_message[i]=='\r') {
823      n->z_message[i]=' ';
824    }
825  }
826}
827#endif
828
829void owl_zephyr_zlocate(char *user, char *out, int auth)
830{
831#ifdef HAVE_LIBZEPHYR
832  int ret, numlocs;
833  int one = 1;
834  ZLocations_t locations;
835  char *myuser;
836 
837  strcpy(out, "");
838  ZResetAuthentication();
839  ret=ZLocateUser(user,&numlocs,auth?ZAUTH:ZNOAUTH);
840  if (ret != ZERR_NONE) {
841    sprintf(out, "Error locating user %s\n", user);
842    return;
843  }
844
845  if (numlocs==0) {
846    myuser=short_zuser(user);
847    sprintf(out, "%s: Hidden or not logged in\n", myuser);
848    owl_free(myuser);
849    return;
850  }
851   
852  for (;numlocs;numlocs--) {
853    ZGetLocations(&locations,&one);
854    myuser=short_zuser(user);
855    sprintf(out + strlen(out), "%s: %s\t%s\t%s\n", myuser,
856            locations.host ? locations.host : "?",
857            locations.tty ? locations.tty : "?",
858            locations.time ? locations.time : "?");
859    owl_free(myuser);
860  }
861#endif
862}
863
864void owl_zephyr_addsub(char *filename, char *class, char *inst, char *recip)
865{
866#ifdef HAVE_LIBZEPHYR
867  char *line, subsfile[LINE], buff[LINE];
868  FILE *file;
869
870  line=owl_zephyr_makesubline(class, inst, recip);
871
872  if (filename==NULL) {
873    sprintf(subsfile, "%s/%s", owl_global_get_homedir(&g), ".zephyr.subs");
874  } else {
875    strcpy(subsfile, filename);
876  }
877
878  /* if the file already exists, check to see if the sub is already there */
879  file=fopen(subsfile, "r");
880  if (file) {
881    while (fgets(buff, LINE, file)!=NULL) {
882      if (!strcasecmp(buff, line)) {
883        owl_function_error("Subscription already present in %s", subsfile);
884        owl_free(line);
885        fclose(file);
886        return;
887      }
888    }
889    fclose(file);
890  }
891
892  /* if we get here then we didn't find it */
893  file=fopen(subsfile, "a");
894  if (!file) {
895    owl_function_error("Error opening file %s for writing", subsfile);
896    owl_free(line);
897    return;
898  }
899  fputs(line, file);
900  fclose(file);
901  owl_function_makemsg("Subscription added");
902 
903  owl_free(line);
904#endif
905}
906
907void owl_zephyr_delsub(char *filename, char *class, char *inst, char *recip)
908{
909#ifdef HAVE_LIBZEPHYR
910  char *line, *subsfile;
911 
912  line=owl_zephyr_makesubline(class, inst, recip);
913  line[strlen(line)-1]='\0';
914
915  if (!filename) {
916    subsfile=owl_sprintf("%s/.zephyr.subs", owl_global_get_homedir(&g));
917  } else {
918    subsfile=owl_strdup(filename);
919  }
920 
921  owl_util_file_deleteline(subsfile, line, 1);
922  owl_free(subsfile);
923  owl_free(line);
924  owl_function_makemsg("Subscription removed");
925#endif
926}
927
928/* caller must free the return */
929char *owl_zephyr_makesubline(char *class, char *inst, char *recip)
930{
931  char *out;
932
933  out=owl_malloc(strlen(class)+strlen(inst)+strlen(recip)+30);
934  sprintf(out, "%s,%s,%s\n", class, inst, !strcmp(recip, "") ? "*" : recip);
935  return(out);
936}
937
938
939void owl_zephyr_zlog_in(void)
940{
941#ifdef HAVE_LIBZEPHYR
942  char *exposure, *eset;
943  int ret;
944
945  ZResetAuthentication();
946   
947  eset=EXPOSE_REALMVIS;
948  exposure=ZGetVariable("exposure");
949  if (exposure==NULL) {
950    eset=EXPOSE_REALMVIS;
951  } else if (!strcasecmp(exposure,EXPOSE_NONE)) {
952    eset = EXPOSE_NONE;
953  } else if (!strcasecmp(exposure,EXPOSE_OPSTAFF)) {
954    eset = EXPOSE_OPSTAFF;
955  } else if (!strcasecmp(exposure,EXPOSE_REALMVIS)) {
956    eset = EXPOSE_REALMVIS;
957  } else if (!strcasecmp(exposure,EXPOSE_REALMANN)) {
958    eset = EXPOSE_REALMANN;
959  } else if (!strcasecmp(exposure,EXPOSE_NETVIS)) {
960    eset = EXPOSE_NETVIS;
961  } else if (!strcasecmp(exposure,EXPOSE_NETANN)) {
962    eset = EXPOSE_NETANN;
963  }
964   
965  ret=ZSetLocation(eset);
966  if (ret != ZERR_NONE) {
967    /*
968      char buff[LINE];
969      sprintf(buff, "Error setting location: %s", error_message(ret));
970      owl_function_makemsg(buff);
971    */
972  }
973#endif
974}
975
976void owl_zephyr_zlog_out(void)
977{
978#ifdef HAVE_LIBZEPHYR
979  int ret;
980
981  ZResetAuthentication();
982  ret=ZUnsetLocation();
983  if (ret != ZERR_NONE) {
984    /*
985      char buff[LINE];
986      sprintf(buff, "Error unsetting location: %s", error_message(ret));
987      owl_function_makemsg(buff);
988    */
989  }
990#endif
991}
992
993void owl_zephyr_addbuddy(char *name)
994{
995  char *filename;
996  FILE *file;
997 
998  filename=owl_sprintf("%s/.anyone", owl_global_get_homedir(&g));
999  file=fopen(filename, "a");
1000  owl_free(filename);
1001  if (!file) {
1002    owl_function_error("Error opening zephyr buddy file for append");
1003    return;
1004  }
1005  fprintf(file, "%s\n", name);
1006  fclose(file);
1007}
1008
1009void owl_zephyr_delbuddy(char *name)
1010{
1011  char *filename;
1012
1013  filename=owl_sprintf("%s/.anyone", owl_global_get_homedir(&g));
1014  owl_util_file_deleteline(filename, name, 0);
1015  owl_free(filename);
1016}
1017
1018/* return auth string */
1019#ifdef HAVE_LIBZEPHYR
1020char *owl_zephyr_get_authstr(ZNotice_t *n)
1021{
1022
1023  if (!n) return("UNKNOWN");
1024
1025  if (n->z_auth == ZAUTH_FAILED) {
1026    return ("FAILED");
1027  } else if (n->z_auth == ZAUTH_NO) {
1028    return ("NO");
1029  } else if (n->z_auth == ZAUTH_YES) {
1030    return ("YES");
1031  } else {
1032    return ("UNKNOWN");
1033  }           
1034}
1035#else
1036char *owl_zephyr_get_authstr(void *n)
1037{
1038  return("");
1039}
1040#endif
1041
1042/* Returns a buffer of subscriptions or an error message.  Caller must
1043 * free the return.
1044 */
1045char *owl_zephyr_getsubs()
1046{
1047#ifdef HAVE_LIBZEPHYR
1048  int ret, num, i, one;
1049  int buffsize;
1050  ZSubscription_t sub;
1051  char *out;
1052  one=1;
1053
1054  ret=ZRetrieveSubscriptions(0, &num);
1055  if (ret==ZERR_TOOMANYSUBS) {
1056    return(owl_strdup("Zephyr: too many subscriptions\n"));
1057  } else if (ret || (num <= 0)) {
1058    return(owl_strdup("Zephyr: error retriving subscriptions\n"));
1059  }
1060
1061  buffsize = (num + 1) * 50;
1062  out=owl_malloc(buffsize);
1063  strcpy(out, "");
1064  for (i=0; i<num; i++) {
1065    if ((ret = ZGetSubscriptions(&sub, &one)) != ZERR_NONE) {
1066      owl_free(out);
1067      ZFlushSubscriptions();
1068      out=owl_strdup("Error while getting subscriptions\n");
1069      return(out);
1070    } else {
1071      int tmpbufflen;
1072      char *tmpbuff;
1073      tmpbuff = owl_sprintf("<%s,%s,%s>\n%s", sub.zsub_class, sub.zsub_classinst, sub.zsub_recipient, out);
1074      tmpbufflen = strlen(tmpbuff) + 1;
1075      if (tmpbufflen > buffsize) {
1076        char *out2;
1077        buffsize = tmpbufflen * 2;
1078        out2 = owl_realloc(out, buffsize);
1079        if (out2 == NULL) {
1080          owl_free(out);
1081          owl_free(tmpbuff);
1082          ZFlushSubscriptions();
1083          out=owl_strdup("Realloc error while getting subscriptions\n");
1084          return(out);   
1085        }
1086        out = out2;
1087      }
1088      strcpy(out, tmpbuff);
1089      owl_free(tmpbuff);
1090    }
1091  }
1092
1093  ZFlushSubscriptions();
1094  return(out);
1095#else
1096  return(owl_strdup("Zephyr not available"));
1097#endif
1098}
1099
1100char *owl_zephyr_get_variable(char *var)
1101{
1102#ifdef HAVE_LIBZEPHYR
1103  return(ZGetVariable(var));
1104#else
1105  return("");
1106#endif
1107}
1108
1109void owl_zephyr_set_locationinfo(char *host, char *val)
1110{
1111#ifdef HAVE_LIBZEPHYR
1112  ZInitLocationInfo(host, val);
1113#endif
1114}
1115 
1116/* Strip a local realm fron the zephyr user name.
1117 * The caller must free the return
1118 */
1119char *short_zuser(char *in)
1120{
1121  char *out, *ptr;
1122
1123  out=owl_strdup(in);
1124  ptr=strchr(out, '@');
1125  if (ptr) {
1126    if (!strcasecmp(ptr+1, owl_zephyr_get_realm())) {
1127      *ptr='\0';
1128    }
1129  }
1130  return(out);
1131}
1132
1133/* Append a local realm to the zephyr user name if necessary.
1134 * The caller must free the return.
1135 */
1136char *long_zuser(char *in)
1137{
1138  if (strchr(in, '@')) {
1139    return(owl_strdup(in));
1140  }
1141  return(owl_sprintf("%s@%s", in, owl_zephyr_get_realm()));
1142}
1143
1144/* strip out the instance from a zsender's principal.  Preserves the
1145 * realm if present.  daemon.webzephyr is a special case.  The
1146 * caller must free the return
1147 */
1148char *owl_zephyr_smartstripped_user(char *in)
1149{
1150  char *ptr, *realm, *out;
1151
1152  out=owl_strdup(in);
1153
1154  /* bail immeaditly if we don't have to do any work */
1155  ptr=strchr(in, '.');
1156  if (!strchr(in, '/') && !ptr) {
1157    /* no '/' and no '.' */
1158    return(out);
1159  }
1160  if (ptr && strchr(in, '@') && (ptr > strchr(in, '@'))) {
1161    /* There's a '.' but it's in the realm */
1162    return(out);
1163  }
1164  if (!strncasecmp(in, OWL_WEBZEPHYR_PRINCIPAL, strlen(OWL_WEBZEPHYR_PRINCIPAL))) {
1165    return(out);
1166  }
1167
1168  /* remove the realm from ptr, but hold on to it */
1169  realm=strchr(out, '@');
1170  if (realm) realm[0]='\0';
1171
1172  /* strip */
1173  ptr=strchr(out, '.');
1174  if (!ptr) ptr=strchr(out, '/');
1175  ptr[0]='\0';
1176
1177  /* reattach the realm if we had one */
1178  if (realm) {
1179    strcat(out, "@");
1180    strcat(out, realm+1);
1181  }
1182
1183  return(out);
1184}
1185
1186/* read the list of users in 'filename' as a .anyone file, and put the
1187 * names of the zephyr users in the list 'in'.  If 'filename' is NULL,
1188 * use the default .anyone file in the users home directory.  Returns
1189 * -1 on failure, 0 on success.
1190 */
1191int owl_zephyr_get_anyone_list(owl_list *in, char *filename)
1192{
1193#ifdef HAVE_LIBZEPHYR
1194  char *ourfile, *tmp, buff[LINE];
1195  FILE *f;
1196
1197  if (filename==NULL) {
1198    tmp=owl_global_get_homedir(&g);
1199    ourfile=owl_sprintf("%s/.anyone", owl_global_get_homedir(&g));
1200  } else {
1201    ourfile=owl_strdup(filename);
1202  }
1203 
1204  f=fopen(ourfile, "r");
1205  if (!f) {
1206    owl_function_error("Error opening file %s: %s", ourfile, strerror(errno) ? strerror(errno) : "");
1207    owl_free(ourfile);
1208    return(-1);
1209  }
1210
1211  while (fgets(buff, LINE, f)!=NULL) {
1212    /* ignore comments, blank lines etc. */
1213    if (buff[0]=='#') continue;
1214    if (buff[0]=='\n') continue;
1215    if (buff[0]=='\0') continue;
1216   
1217    /* strip the \n */
1218    buff[strlen(buff)-1]='\0';
1219   
1220    /* ingore from # on */
1221    tmp=strchr(buff, '#');
1222    if (tmp) tmp[0]='\0';
1223   
1224    /* ingore from SPC */
1225    tmp=strchr(buff, ' ');
1226    if (tmp) tmp[0]='\0';
1227   
1228    /* stick on the local realm. */
1229    if (!strchr(buff, '@')) {
1230      strcat(buff, "@");
1231      strcat(buff, ZGetRealm());
1232    }
1233    owl_list_append_element(in, owl_strdup(buff));
1234  }
1235  fclose(f);
1236  owl_free(ourfile);
1237  return(0);
1238#else
1239  return(-1);
1240#endif
1241}
1242
1243#ifdef HAVE_LIBZEPHYR
1244void owl_zephyr_process_events(owl_dispatch *d) {
1245  int zpendcount=0;
1246  ZNotice_t notice;
1247  struct sockaddr_in from;
1248  owl_message *m=NULL;
1249
1250  while(owl_zephyr_zpending() && zpendcount < 20) {
1251    if (owl_zephyr_zpending()) {
1252      ZReceiveNotice(&notice, &from);
1253      zpendcount++;
1254
1255      /* is this an ack from a zephyr we sent? */
1256      if (owl_zephyr_notice_is_ack(&notice)) {
1257        owl_zephyr_handle_ack(&notice);
1258        continue;
1259      }
1260
1261      /* if it's a ping and we're not viewing pings then skip it */
1262      if (!owl_global_is_rxping(&g) && !strcasecmp(notice.z_opcode, "ping")) {
1263        continue;
1264      }
1265
1266      /* create the new message */
1267      m=owl_malloc(sizeof(owl_message));
1268      owl_message_create_from_znotice(m, &notice);
1269
1270      owl_global_messagequeue_addmsg(&g, m);
1271    }
1272  }
1273}
1274
1275#else
1276void owl_zephyr_process_events(owl_dispatch *d) {
1277 
1278}
1279#endif
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