source: perlconfig.c @ 0982901

release-1.10release-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since 0982901 was d1ae4a4, checked in by Nelson Elhage <nelhage@mit.edu>, 16 years ago
Export a time_t for messages to perl as 'unix_time' Previously, the only way for perl code to access the time was through the 'time' string, which code had to strptime() or otherwise parse in order to render the time in a different format.
  • Property mode set to 100644
File size: 13.3 KB
Line 
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <sys/types.h>
5#include <sys/stat.h>
6#include <errno.h>
7#define OWL_PERL
8#include "owl.h"
9
10static const char fileIdent[] = "$Id$";
11
12extern XS(boot_BarnOwl);
13extern XS(boot_DynaLoader);
14/* extern XS(boot_DBI); */
15
16static void owl_perl_xs_init(pTHX)
17{
18  char *file = __FILE__;
19  dXSUB_SYS;
20  {
21    newXS("BarnOwl::bootstrap", boot_BarnOwl, file);
22    newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
23  }
24}
25
26SV *owl_perlconfig_message2hashref(owl_message *m)
27{
28  HV *h, *stash;
29  SV *hr;
30  char *ptr, *blessas, *type;
31  int i, j;
32  owl_pair *pair;
33  owl_filter *wrap;
34
35  if (!m) return &PL_sv_undef;
36  wrap = owl_global_get_filter(&g, "wordwrap");
37  if(!wrap) {
38      owl_function_error("wrap filter is not defined");
39      return &PL_sv_undef;
40  }
41
42  h = newHV();
43
44#define MSG2H(h,field) (void)hv_store(h, #field, strlen(#field),        \
45                                      newSVpv(owl_message_get_##field(m),0), 0)
46
47  if (owl_message_is_type_zephyr(m)
48      && owl_message_is_direction_in(m)) {
49    /* Handle zephyr-specific fields... */
50    AV *av_zfields;
51
52    av_zfields = newAV();
53    j=owl_zephyr_get_num_fields(owl_message_get_notice(m));
54    for (i=0; i<j; i++) {
55      ptr=owl_zephyr_get_field_as_utf8(owl_message_get_notice(m), i+1);
56      av_push(av_zfields, newSVpvn(ptr, strlen(ptr)));
57      owl_free(ptr);
58    }
59    (void)hv_store(h, "fields", strlen("fields"), newRV_noinc((SV*)av_zfields), 0);
60
61    (void)hv_store(h, "auth", strlen("auth"), 
62                   newSVpv(owl_zephyr_get_authstr(owl_message_get_notice(m)),0),0);
63  }
64
65  j=owl_list_get_size(&(m->attributes));
66  for(i=0; i<j; i++) {
67    pair=owl_list_get_element(&(m->attributes), i);
68    (void)hv_store(h, owl_pair_get_key(pair), strlen(owl_pair_get_key(pair)),
69                   newSVpv(owl_pair_get_value(pair),0),0);
70  }
71 
72  MSG2H(h, type);
73  MSG2H(h, direction);
74  MSG2H(h, class);
75  MSG2H(h, instance);
76  MSG2H(h, sender);
77  MSG2H(h, realm);
78  MSG2H(h, recipient);
79  MSG2H(h, opcode);
80  MSG2H(h, hostname);
81  MSG2H(h, body);
82  MSG2H(h, login);
83  MSG2H(h, zsig);
84  MSG2H(h, zwriteline);
85  if (owl_message_get_header(m)) {
86    MSG2H(h, header); 
87  }
88  (void)hv_store(h, "time", strlen("time"), newSVpv(owl_message_get_timestr(m),0),0);
89  (void)hv_store(h, "unix_time", strlen("unix_time"), newSViv(m->time), 0);
90  (void)hv_store(h, "id", strlen("id"), newSViv(owl_message_get_id(m)),0);
91  (void)hv_store(h, "deleted", strlen("deleted"), newSViv(owl_message_is_delete(m)),0);
92  (void)hv_store(h, "private", strlen("private"), newSViv(owl_message_is_private(m)),0);
93  (void)hv_store(h, "should_wordwrap",
94                 strlen("should_wordwrap"), newSViv(
95                                                    owl_filter_message_match(wrap, m)),0);
96
97  type = owl_message_get_type(m);
98  if(!type || !*type) type = "generic";
99  type = owl_strdup(type);
100  type[0] = toupper(type[0]);
101  blessas = owl_sprintf("BarnOwl::Message::%s", type);
102
103  hr = newRV_noinc((SV*)h);
104  stash =  gv_stashpv(blessas,0);
105  if(!stash) {
106    owl_function_error("No such class: %s for message type %s", blessas, owl_message_get_type(m));
107    stash = gv_stashpv("BarnOwl::Message", 1);
108  }
109  hr = sv_bless(hr,stash);
110  owl_free(type);
111  owl_free(blessas);
112  return hr;
113}
114
115SV *owl_perlconfig_curmessage2hashref(void) /*noproto*/
116{
117  int curmsg;
118  owl_view *v;
119  v=owl_global_get_current_view(&g);
120  if (owl_view_get_size(v) < 1) {
121    return &PL_sv_undef;
122  }
123  curmsg=owl_global_get_curmsg(&g);
124  return owl_perlconfig_message2hashref(owl_view_get_element(v, curmsg));
125}
126
127/* XXX TODO: Messages should round-trip properly between
128   message2hashref and hashref2message. Currently we lose
129   zephyr-specific properties stored in the ZNotice_t
130
131   This has been somewhat addressed, but is still not lossless.
132 */
133owl_message * owl_perlconfig_hashref2message(SV *msg)
134{
135  owl_message * m;
136  HE * ent;
137  I32 count, len;
138  char *key,*val;
139  HV * hash;
140  struct tm tm;
141
142  hash = (HV*)SvRV(msg);
143
144  m = owl_malloc(sizeof(owl_message));
145  owl_message_init(m);
146
147  count = hv_iterinit(hash);
148  while((ent = hv_iternext(hash))) {
149    key = hv_iterkey(ent, &len);
150    val = SvPV_nolen(hv_iterval(hash, ent));
151    if(!strcmp(key, "type")) {
152      owl_message_set_type(m, val);
153    } else if(!strcmp(key, "direction")) {
154      owl_message_set_direction(m, owl_message_parse_direction(val));
155    } else if(!strcmp(key, "private")) {
156      SV * v = hv_iterval(hash, ent);
157      if(SvTRUE(v)) {
158        owl_message_set_isprivate(m);
159      }
160    } else if (!strcmp(key, "hostname")) {
161      owl_message_set_hostname(m, val);
162    } else if (!strcmp(key, "zwriteline")) {
163      owl_message_set_zwriteline(m, val);
164    } else if (!strcmp(key, "time")) {
165      m->timestr = owl_strdup(val);
166      strptime(val, "%a %b %d %T %Y", &tm);
167      m->time = mktime(&tm);
168    } else {
169      owl_message_set_attribute(m, key, val);
170    }
171  }
172  if(owl_message_is_type_admin(m)) {
173    if(!owl_message_get_attribute_value(m, "adminheader"))
174      owl_message_set_attribute(m, "adminheader", "");
175  }
176#ifdef HAVE_LIBZEPHYR
177  if (owl_message_is_type_zephyr(m)) {
178    ZNotice_t *n = &(m->notice);
179    n->z_kind = ACKED;
180    n->z_port = 0;
181    n->z_auth = ZAUTH_NO;
182    n->z_checked_auth = 0;
183    n->z_class = owl_message_get_class(m);
184    n->z_class_inst = owl_message_get_instance(m);
185    n->z_opcode = owl_message_get_opcode(m);
186    n->z_sender = owl_message_get_sender(m);
187    n->z_recipient = owl_message_get_recipient(m);
188    n->z_default_format = "[zephyr created from perl]";
189    n->z_multinotice = "[zephyr created from perl]";
190    n->z_num_other_fields = 0;
191    n->z_message = owl_sprintf("%s%c%s", owl_message_get_zsig(m), '\0', owl_message_get_body(m));
192    n->z_message_len = strlen(owl_message_get_zsig(m)) + strlen(owl_message_get_body(m)) + 1;
193  }
194#endif
195  return m;
196}
197
198/* Calls in a scalar context, passing it a hash reference.
199   If return value is non-null, caller must free. */
200char *owl_perlconfig_call_with_message(char *subname, owl_message *m)
201{
202  dSP ;
203  int count;
204  SV *msgref, *srv;
205  char *out;
206 
207  ENTER ;
208  SAVETMPS;
209 
210  PUSHMARK(SP) ;
211  msgref = owl_perlconfig_message2hashref(m);
212  XPUSHs(sv_2mortal(msgref));
213  PUTBACK ;
214 
215  count = call_pv(subname, G_SCALAR|G_EVAL|G_KEEPERR);
216 
217  SPAGAIN ;
218
219  if (SvTRUE(ERRSV)) {
220    owl_function_error("Perl Error: '%s'", SvPV_nolen(ERRSV));
221    /* and clear the error */
222    sv_setsv (ERRSV, &PL_sv_undef);
223  }
224
225  if (count != 1) {
226    fprintf(stderr, "bad perl!  no biscuit!  returned wrong count!\n");
227    abort();
228  }
229
230  srv = POPs;
231
232  if (srv) {
233    out = owl_strdup(SvPV_nolen(srv));
234  } else {
235    out = NULL;
236  }
237 
238  PUTBACK ;
239  FREETMPS ;
240  LEAVE ;
241
242  return out;
243}
244
245
246/* Calls a method on a perl object representing a message.
247   If the return value is non-null, the caller must free it.
248 */
249char * owl_perlconfig_message_call_method(owl_message *m, char *method, int argc, char ** argv)
250{
251  dSP;
252  unsigned int count, i;
253  SV *msgref, *srv;
254  char *out;
255
256  msgref = owl_perlconfig_message2hashref(m);
257
258  ENTER;
259  SAVETMPS;
260
261  PUSHMARK(SP);
262  XPUSHs(sv_2mortal(msgref));
263  for(i=0;i<argc;i++) {
264    XPUSHs(sv_2mortal(newSVpv(argv[i], 0)));
265  }
266  PUTBACK;
267
268  count = call_method(method, G_SCALAR|G_KEEPERR|G_EVAL);
269
270  SPAGAIN;
271
272  if(count != 1) {
273    fprintf(stderr, "perl returned wrong count %d\n", count);
274    abort();
275  }
276
277  if (SvTRUE(ERRSV)) {
278    owl_function_error("Error: '%s'", SvPV_nolen(ERRSV));
279    /* and clear the error */
280    sv_setsv (ERRSV, &PL_sv_undef);
281  }
282
283  srv = POPs;
284
285  if (srv) {
286    out = owl_strdup(SvPV_nolen(srv));
287  } else {
288    out = NULL;
289  }
290
291  PUTBACK;
292  FREETMPS;
293  LEAVE;
294
295  return out;
296}
297
298
299char *owl_perlconfig_initperl(char * file, int *Pargc, char ***Pargv, char *** Penv)
300{
301  int ret;
302  PerlInterpreter *p;
303  char *err;
304  char *args[4] = {"", "-e", "0;", NULL};
305  AV *inc;
306  char *path;
307
308  /* create and initialize interpreter */
309  PERL_SYS_INIT3(Pargc, Pargv, Penv);
310  p=perl_alloc();
311  owl_global_set_perlinterp(&g, (void*)p);
312  perl_construct(p);
313
314  owl_global_set_no_have_config(&g);
315
316  ret=perl_parse(p, owl_perl_xs_init, 2, args, NULL);
317  if (ret || SvTRUE(ERRSV)) {
318    err=owl_strdup(SvPV_nolen(ERRSV));
319    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
320    return(err);
321  }
322
323  ret=perl_run(p);
324  if (ret || SvTRUE(ERRSV)) {
325    err=owl_strdup(SvPV_nolen(ERRSV));
326    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
327    return(err);
328  }
329
330  owl_global_set_have_config(&g);
331
332  /* create legacy variables */
333  get_sv("BarnOwl::id", TRUE);
334  get_sv("BarnOwl::class", TRUE);
335  get_sv("BarnOwl::instance", TRUE);
336  get_sv("BarnOwl::recipient", TRUE);
337  get_sv("BarnOwl::sender", TRUE);
338  get_sv("BarnOwl::realm", TRUE);
339  get_sv("BarnOwl::opcode", TRUE);
340  get_sv("BarnOwl::zsig", TRUE);
341  get_sv("BarnOwl::msg", TRUE);
342  get_sv("BarnOwl::time", TRUE);
343  get_sv("BarnOwl::host", TRUE);
344  get_av("BarnOwl::fields", TRUE);
345
346  if(file) {
347    SV * cfg = get_sv("BarnOwl::configfile", TRUE);
348    sv_setpv(cfg, file);
349  }
350
351  /* Add the system lib path to @INC */
352  inc = get_av("INC", 0);
353  path = owl_sprintf("%s/lib", owl_get_datadir());
354  av_unshift(inc, 1);
355  av_store(inc, 0, newSVpv(path, 0));
356  owl_free(path);
357
358  eval_pv("use BarnOwl;", FALSE);
359
360  if (SvTRUE(ERRSV)) {
361    err=owl_strdup(SvPV_nolen(ERRSV));
362    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
363    return(err);
364  }
365
366  /* check if we have the formatting function */
367  if (owl_perlconfig_is_function("BarnOwl::format_msg")) {
368    owl_global_set_config_format(&g, 1);
369  }
370
371  return(NULL);
372}
373
374/* returns whether or not a function exists */
375int owl_perlconfig_is_function(char *fn) {
376  if (get_cv(fn, FALSE)) return(1);
377  else return(0);
378}
379
380/* caller is responsible for freeing returned string */
381char *owl_perlconfig_execute(char *line)
382{
383  STRLEN len;
384  SV *response;
385  char *out, *preout;
386
387  if (!owl_global_have_config(&g)) return NULL;
388
389  ENTER;
390  SAVETMPS;
391  /* execute the subroutine */
392  response = eval_pv(line, FALSE);
393
394  if (SvTRUE(ERRSV)) {
395    owl_function_error("Perl Error: '%s'", SvPV_nolen(ERRSV));
396    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
397  }
398
399  preout=SvPV(response, len);
400  if (len == 0 || preout[len - 1] != '\n')
401    out = owl_sprintf("%s\n", preout);
402  else
403    out = owl_strdup(preout);
404  FREETMPS;
405  LEAVE;
406
407  return(out);
408}
409
410void owl_perlconfig_getmsg(owl_message *m, char *subname)
411{
412  char *ptr = NULL;
413  if (owl_perlconfig_is_function("BarnOwl::Hooks::_receive_msg")) {
414    ptr = owl_perlconfig_call_with_message(subname?subname
415                                           :"BarnOwl::_receive_msg_legacy_wrap", m);
416  }
417  if (ptr) owl_free(ptr);
418}
419
420/* Called on all new messages; receivemsg is only called on incoming ones */
421void owl_perlconfig_newmsg(owl_message *m, char *subname)
422{
423  char *ptr = NULL;
424  if (owl_perlconfig_is_function("BarnOwl::Hooks::_new_msg")) {
425    ptr = owl_perlconfig_call_with_message(subname?subname
426                                           :"BarnOwl::Hooks::_new_msg", m);
427  }
428  if (ptr) owl_free(ptr);
429}
430
431char *owl_perlconfig_perlcmd(owl_cmd *cmd, int argc, char **argv)
432{
433  int i, count;
434  char * ret = NULL;
435  SV *rv;
436  dSP;
437
438  ENTER;
439  SAVETMPS;
440
441  PUSHMARK(SP);
442  for(i=0;i<argc;i++) {
443    SV *tmp = newSVpv(argv[i], 0);
444    SvUTF8_on(tmp);
445    XPUSHs(sv_2mortal(tmp));
446  }
447  PUTBACK;
448
449  count = call_sv(cmd->cmd_perl, G_SCALAR|G_EVAL);
450
451  SPAGAIN;
452
453  if(SvTRUE(ERRSV)) {
454    owl_function_error("%s", SvPV_nolen(ERRSV));
455    (void)POPs;
456  } else {
457    if(count != 1)
458      croak("Perl command %s returned more than one value!", cmd->name);
459    rv = POPs;
460    if(SvTRUE(rv)) {
461      ret = owl_strdup(SvPV_nolen(rv));
462    }
463  }
464
465  FREETMPS;
466  LEAVE;
467
468  return ret;
469}
470
471void owl_perlconfig_cmd_free(owl_cmd *cmd)
472{
473  SvREFCNT_dec(cmd->cmd_perl);
474}
475
476void owl_perlconfig_dispatch_free(owl_dispatch *d)
477{
478  SvREFCNT_dec((SV*)d->data);
479  owl_free(d);
480}
481
482void owl_perlconfig_edit_callback(owl_editwin *e)
483{
484  SV *cb = (SV*)(e->cbdata);
485  SV *text;
486  dSP;
487
488  if(cb == NULL) {
489    owl_function_error("Perl callback is NULL!");
490  }
491  text = newSVpv(owl_editwin_get_text(e), 0);
492  SvUTF8_on(text);
493
494  ENTER;
495  SAVETMPS;
496
497  PUSHMARK(SP);
498  XPUSHs(sv_2mortal(text));
499  PUTBACK;
500 
501  call_sv(cb, G_DISCARD|G_KEEPERR|G_EVAL);
502
503  if(SvTRUE(ERRSV)) {
504    owl_function_error("%s", SvPV_nolen(ERRSV));
505  }
506
507  FREETMPS;
508  LEAVE;
509
510  SvREFCNT_dec(cb);
511  e->cbdata = NULL;
512}
513
514void owl_perlconfig_mainloop()
515{
516  dSP;
517  if (!owl_perlconfig_is_function("BarnOwl::Hooks::_mainloop_hook"))
518    return;
519  PUSHMARK(SP) ;
520  call_pv("BarnOwl::Hooks::_mainloop_hook", G_DISCARD|G_EVAL);
521  if(SvTRUE(ERRSV)) {
522    owl_function_error("%s", SvPV_nolen(ERRSV));
523  }
524  return;
525}
526
527void owl_perlconfig_dispatch(owl_dispatch *d)
528{
529  SV *cb = d->data;
530  dSP;
531  if(cb == NULL) {
532    owl_function_error("Perl callback is NULL!");
533    return;
534  }
535
536  ENTER;
537  SAVETMPS;
538
539  PUSHMARK(SP);
540  PUTBACK;
541 
542  call_sv(cb, G_DISCARD|G_KEEPERR|G_EVAL);
543
544  if(SvTRUE(ERRSV)) {
545    owl_function_error("%s", SvPV_nolen(ERRSV));
546  }
547
548  FREETMPS;
549  LEAVE;
550}
551
552void owl_perlconfig_perl_timer(owl_timer *t, void *data)
553{
554  SV *obj = data;
555
556  if(!SvROK(obj)) {
557    return;
558  }
559
560  dSP;
561  ENTER;
562  SAVETMPS;
563
564  PUSHMARK(SP);
565  XPUSHs(obj);
566  PUTBACK;
567
568  call_method("do_callback", G_DISCARD|G_KEEPERR|G_EVAL);
569
570  SPAGAIN;
571
572  if (SvTRUE(ERRSV)) {
573    owl_function_error("Error in calback: '%s'", SvPV_nolen(ERRSV));
574    sv_setsv (ERRSV, &PL_sv_undef);
575  }
576
577  PUTBACK;
578  FREETMPS;
579  LEAVE;
580}
581
582void owl_perlconfig_perl_timer_destroy(owl_timer *t)
583{
584  if(SvOK((SV*)t->data)) {
585    SvREFCNT_dec((SV*)t->data);
586  }
587}
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