source: perlconfig.c @ 353719a

Last change on this file since 353719a was 353719a, checked in by David Benjamin <davidben@mit.edu>, 9 years ago
Start of perlvariables iteration N+1 New plan: the C <-> perl interface deals entirely with strings. Storage is entirely perl-side. C does not know and doesn't care about the underlying perl-side types. Note that this means an "int" variable in C land and an "int" variable in perl land have no relation.
  • Property mode set to 100644
File size: 13.1 KB
RevLine 
[908e388]1#define OWL_PERL
[f1e629d]2#include "owl.h"
[f271129]3#include <stdio.h>
[f1e629d]4
[8203afd]5extern XS(boot_BarnOwl);
[908e388]6extern XS(boot_DynaLoader);
[af1920fd]7/* extern XS(boot_DBI); */
[f1e629d]8
[5aa33fd]9void owl_perl_xs_init(pTHX) /* noproto */
[c3acb0b]10{
[e19eb97]11  const char *file = __FILE__;
[f1e629d]12  dXSUB_SYS;
13  {
[8203afd]14    newXS("BarnOwl::bootstrap", boot_BarnOwl, file);
[908e388]15    newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
[f1e629d]16  }
17}
18
[d1b1cf6]19
[6829afc]20CALLER_OWN SV *owl_new_sv(const char * str)
[d1b1cf6]21{
22  SV *ret = newSVpv(str, 0);
[68f358c]23  if (is_utf8_string((const U8 *)str, strlen(str))) {
[d1b1cf6]24    SvUTF8_on(ret);
25  } else {
[eea72a1]26    char *escape = owl_escape_highbit(str);
27    owl_function_error("Internal error! Non-UTF-8 string encountered:\n%s", escape);
[ddbbcffa]28    g_free(escape);
[d1b1cf6]29  }
30  return ret;
31}
32
[ce68f23]33CALLER_OWN AV *owl_new_av(const GPtrArray *l, SV *(*to_sv)(const void *))
[e67359b]34{
35  AV *ret;
36  int i;
37  void *element;
38
39  ret = newAV();
40
[ce68f23]41  for (i = 0; i < l->len; i++) {
42    element = l->pdata[i];
[e67359b]43    av_push(ret, to_sv(element));
44  }
45
46  return ret;
47}
48
[6829afc]49CALLER_OWN HV *owl_new_hv(const owl_dict *d, SV *(*to_sv)(const void *))
[e7f5970]50{
51  HV *ret;
[ce68f23]52  GPtrArray *keys;
[e7f5970]53  const char *key;
54  void *element;
55  int i;
56
57  ret = newHV();
58
59  /* TODO: add an iterator-like interface to owl_dict */
[ce68f23]60  keys = owl_dict_get_keys(d);
61  for (i = 0; i < keys->len; i++) {
62    key = keys->pdata[i];
[e7f5970]63    element = owl_dict_find_element(d, key);
64    (void)hv_store(ret, key, strlen(key), to_sv(element), 0);
65  }
[ce68f23]66  owl_ptr_array_free(keys, g_free);
[e7f5970]67
68  return ret;
69}
70
[6829afc]71CALLER_OWN SV *owl_perlconfig_message2hashref(const owl_message *m)
[c3acb0b]72{
[1cc95709]73  HV *h, *stash;
[f1e629d]74  SV *hr;
[e19eb97]75  const char *type;
[fa4562c]76  char *ptr, *utype, *blessas;
[d199207]77  const char *f;
78  int i;
[25fb825]79  const owl_pair *pair;
[4542047]80  const owl_filter *wrap;
[f1e629d]81
82  if (!m) return &PL_sv_undef;
[f6b319c]83  wrap = owl_global_get_filter(&g, "wordwrap");
84  if(!wrap) {
85      owl_function_error("wrap filter is not defined");
86      return &PL_sv_undef;
87  }
88
[f1e629d]89  h = newHV();
90
[3ea31b6]91#define MSG2H(h,field) (void)hv_store(h, #field, strlen(#field),        \
[d1b1cf6]92                                      owl_new_sv(owl_message_get_##field(m)), 0)
[f1e629d]93
[6401db3]94  if (owl_message_is_type_zephyr(m) && owl_message_is_direction_in(m)) {
[f1e629d]95    /* Handle zephyr-specific fields... */
[6401db3]96    AV *av_zfields = newAV();
97    if (owl_message_get_notice(m)) {
98      for (f = owl_zephyr_first_raw_field(owl_message_get_notice(m)); f != NULL;
99           f = owl_zephyr_next_raw_field(owl_message_get_notice(m), f)) {
100        ptr = owl_zephyr_field_as_utf8(owl_message_get_notice(m), f);
101        av_push(av_zfields, owl_new_sv(ptr));
102        g_free(ptr);
103      }
104      (void)hv_store(h, "auth", strlen("auth"),
105                     owl_new_sv(owl_zephyr_get_authstr(owl_message_get_notice(m))), 0);
106    } else {
107      /* Incoming zephyrs without a ZNotice_t are pseudo-logins. To appease
108       * existing styles, put in bogus 'auth' and 'fields' keys. */
109      (void)hv_store(h, "auth", strlen("auth"), owl_new_sv("NO"), 0);
[f1e629d]110    }
[3ea31b6]111    (void)hv_store(h, "fields", strlen("fields"), newRV_noinc((SV*)av_zfields), 0);
[f1e629d]112  }
113
[f9df2f0]114  for (i = 0; i < m->attributes->len; i++) {
115    pair = m->attributes->pdata[i];
[3ea31b6]116    (void)hv_store(h, owl_pair_get_key(pair), strlen(owl_pair_get_key(pair)),
[d1b1cf6]117                   owl_new_sv(owl_pair_get_value(pair)),0);
[421c8ef7]118  }
119 
[f1e629d]120  MSG2H(h, type);
121  MSG2H(h, direction);
122  MSG2H(h, class);
123  MSG2H(h, instance);
124  MSG2H(h, sender);
125  MSG2H(h, realm);
126  MSG2H(h, recipient);
127  MSG2H(h, opcode);
128  MSG2H(h, hostname);
129  MSG2H(h, body);
130  MSG2H(h, login);
131  MSG2H(h, zsig);
132  MSG2H(h, zwriteline);
133  if (owl_message_get_header(m)) {
134    MSG2H(h, header); 
135  }
[d1b1cf6]136  (void)hv_store(h, "time", strlen("time"), owl_new_sv(owl_message_get_timestr(m)),0);
[d1ae4a4]137  (void)hv_store(h, "unix_time", strlen("unix_time"), newSViv(m->time), 0);
[3ea31b6]138  (void)hv_store(h, "id", strlen("id"), newSViv(owl_message_get_id(m)),0);
139  (void)hv_store(h, "deleted", strlen("deleted"), newSViv(owl_message_is_delete(m)),0);
140  (void)hv_store(h, "private", strlen("private"), newSViv(owl_message_is_private(m)),0);
141  (void)hv_store(h, "should_wordwrap",
142                 strlen("should_wordwrap"), newSViv(
143                                                    owl_filter_message_match(wrap, m)),0);
[f1e629d]144
[30678ae]145  type = owl_message_get_type(m);
[8fba2ee]146  if(!type || !*type) type = "generic";
[d4927a7]147  utype = g_strdup(type);
[fa4562c]148  utype[0] = toupper(type[0]);
[3472845]149  blessas = g_strdup_printf("BarnOwl::Message::%s", utype);
[f1e629d]150
[19bab8e]151  hr = newRV_noinc((SV*)h);
[1cc95709]152  stash =  gv_stashpv(blessas,0);
153  if(!stash) {
154    owl_function_error("No such class: %s for message type %s", blessas, owl_message_get_type(m));
155    stash = gv_stashpv("BarnOwl::Message", 1);
156  }
157  hr = sv_bless(hr,stash);
[ddbbcffa]158  g_free(utype);
159  g_free(blessas);
[30678ae]160  return hr;
[f1e629d]161}
162
[6829afc]163CALLER_OWN SV *owl_perlconfig_curmessage2hashref(void)
[c3acb0b]164{
[f1e629d]165  int curmsg;
[9e5c9f3]166  const owl_view *v;
[f1e629d]167  v=owl_global_get_current_view(&g);
168  if (owl_view_get_size(v) < 1) {
169    return &PL_sv_undef;
170  }
171  curmsg=owl_global_get_curmsg(&g);
172  return owl_perlconfig_message2hashref(owl_view_get_element(v, curmsg));
173}
174
[30678ae]175/* XXX TODO: Messages should round-trip properly between
176   message2hashref and hashref2message. Currently we lose
177   zephyr-specific properties stored in the ZNotice_t
178 */
[6829afc]179CALLER_OWN owl_message *owl_perlconfig_hashref2message(SV *msg)
[30678ae]180{
181  owl_message * m;
182  HE * ent;
[c107129]183  I32 len;
[e19eb97]184  const char *key,*val;
[30678ae]185  HV * hash;
[ad15610]186  struct tm tm;
[30678ae]187
188  hash = (HV*)SvRV(msg);
189
[96828e4]190  m = g_new(owl_message, 1);
[30678ae]191  owl_message_init(m);
192
[c107129]193  hv_iterinit(hash);
[30678ae]194  while((ent = hv_iternext(hash))) {
195    key = hv_iterkey(ent, &len);
196    val = SvPV_nolen(hv_iterval(hash, ent));
197    if(!strcmp(key, "type")) {
198      owl_message_set_type(m, val);
199    } else if(!strcmp(key, "direction")) {
200      owl_message_set_direction(m, owl_message_parse_direction(val));
201    } else if(!strcmp(key, "private")) {
202      SV * v = hv_iterval(hash, ent);
203      if(SvTRUE(v)) {
204        owl_message_set_isprivate(m);
205      }
206    } else if (!strcmp(key, "hostname")) {
207      owl_message_set_hostname(m, val);
208    } else if (!strcmp(key, "zwriteline")) {
209      owl_message_set_zwriteline(m, val);
210    } else if (!strcmp(key, "time")) {
[937a00e9]211      g_free(m->timestr);
[d4927a7]212      m->timestr = g_strdup(val);
[30678ae]213      strptime(val, "%a %b %d %T %Y", &tm);
214      m->time = mktime(&tm);
215    } else {
216      owl_message_set_attribute(m, key, val);
217    }
218  }
219  if(owl_message_is_type_admin(m)) {
220    if(!owl_message_get_attribute_value(m, "adminheader"))
221      owl_message_set_attribute(m, "adminheader", "");
222  }
223  return m;
224}
[f1e629d]225
226/* Calls in a scalar context, passing it a hash reference.
227   If return value is non-null, caller must free. */
[6829afc]228CALLER_OWN char *owl_perlconfig_call_with_message(const char *subname, const owl_message *m)
[c3acb0b]229{
[f1e629d]230  dSP ;
[c4ba74d]231  int count;
[f1e629d]232  SV *msgref, *srv;
[909771e]233  char *out;
[f1e629d]234 
235  ENTER ;
236  SAVETMPS;
237 
238  PUSHMARK(SP) ;
239  msgref = owl_perlconfig_message2hashref(m);
[19bab8e]240  XPUSHs(sv_2mortal(msgref));
[f1e629d]241  PUTBACK ;
242 
[e3068de]243  count = call_pv(subname, G_SCALAR|G_EVAL);
[f1e629d]244 
245  SPAGAIN ;
246
247  if (SvTRUE(ERRSV)) {
[ce6721f]248    owl_function_error("Perl Error: '%s'", SvPV_nolen(ERRSV));
[27c3a93]249    /* and clear the error */
250    sv_setsv (ERRSV, &PL_sv_undef);
[f1e629d]251  }
252
253  if (count != 1) {
254    fprintf(stderr, "bad perl!  no biscuit!  returned wrong count!\n");
255    abort();
256  }
257
258  srv = POPs;
259
260  if (srv) {
[d4927a7]261    out = g_strdup(SvPV_nolen(srv));
[f1e629d]262  } else {
263    out = NULL;
264  }
265 
266  PUTBACK ;
267  FREETMPS ;
268  LEAVE ;
269
270  return out;
271}
272
[25729b2]273
274/* Calls a method on a perl object representing a message.
275   If the return value is non-null, the caller must free it.
276 */
[6829afc]277CALLER_OWN char *owl_perlconfig_message_call_method(const owl_message *m, const char *method, int argc, const char **argv)
[25729b2]278{
279  dSP;
[909771e]280  unsigned int count, i;
[25729b2]281  SV *msgref, *srv;
[909771e]282  char *out;
[25729b2]283
284  msgref = owl_perlconfig_message2hashref(m);
285
286  ENTER;
287  SAVETMPS;
288
289  PUSHMARK(SP);
[19bab8e]290  XPUSHs(sv_2mortal(msgref));
[25729b2]291  for(i=0;i<argc;i++) {
[d1b1cf6]292    XPUSHs(sv_2mortal(owl_new_sv(argv[i])));
[25729b2]293  }
294  PUTBACK;
295
[e3068de]296  count = call_method(method, G_SCALAR|G_EVAL);
[25729b2]297
298  SPAGAIN;
299
300  if(count != 1) {
[f278ff3]301    fprintf(stderr, "perl returned wrong count %u\n", count);
[25729b2]302    abort();
303  }
304
305  if (SvTRUE(ERRSV)) {
[ce6721f]306    owl_function_error("Error: '%s'", SvPV_nolen(ERRSV));
[25729b2]307    /* and clear the error */
308    sv_setsv (ERRSV, &PL_sv_undef);
309  }
310
311  srv = POPs;
312
313  if (srv) {
[d4927a7]314    out = g_strdup(SvPV_nolen(srv));
[25729b2]315  } else {
316    out = NULL;
317  }
318
319  PUTBACK;
320  FREETMPS;
321  LEAVE;
322
323  return out;
324}
325
[d427f08]326/* caller must free result, if not NULL */
[6829afc]327CALLER_OWN char *owl_perlconfig_initperl(const char *file, int *Pargc, char ***Pargv, char ***Penv)
[c3acb0b]328{
[d03091c]329  int ret;
[f1e629d]330  PerlInterpreter *p;
[4e0f545]331  char *err;
[e19eb97]332  const char *args[4] = {"", "-e", "0;", NULL};
[fd8dfe7]333  AV *inc;
334  char *path;
[f1e629d]335
336  /* create and initialize interpreter */
[e8c6d8f]337  PERL_SYS_INIT3(Pargc, Pargv, Penv);
[f1e629d]338  p=perl_alloc();
[4d86e06]339  owl_global_set_perlinterp(&g, p);
[f1e629d]340  perl_construct(p);
341
[5aa33fd]342  PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
343
[f1e629d]344  owl_global_set_no_have_config(&g);
345
[fa4562c]346  ret=perl_parse(p, owl_perl_xs_init, 2, (char **)args, NULL);
[f1e629d]347  if (ret || SvTRUE(ERRSV)) {
[d4927a7]348    err=g_strdup(SvPV_nolen(ERRSV));
[4e0f545]349    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
350    return(err);
[f1e629d]351  }
352
353  ret=perl_run(p);
354  if (ret || SvTRUE(ERRSV)) {
[d4927a7]355    err=g_strdup(SvPV_nolen(ERRSV));
[4e0f545]356    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
357    return(err);
[f1e629d]358  }
359
360  owl_global_set_have_config(&g);
361
362  /* create legacy variables */
[c415aca]363  get_sv("BarnOwl::id", TRUE);
364  get_sv("BarnOwl::class", TRUE);
365  get_sv("BarnOwl::instance", TRUE);
366  get_sv("BarnOwl::recipient", TRUE);
367  get_sv("BarnOwl::sender", TRUE);
368  get_sv("BarnOwl::realm", TRUE);
369  get_sv("BarnOwl::opcode", TRUE);
370  get_sv("BarnOwl::zsig", TRUE);
371  get_sv("BarnOwl::msg", TRUE);
372  get_sv("BarnOwl::time", TRUE);
373  get_sv("BarnOwl::host", TRUE);
374  get_av("BarnOwl::fields", TRUE);
[00f9a7d]375
376  if(file) {
[8203afd]377    SV * cfg = get_sv("BarnOwl::configfile", TRUE);
[00f9a7d]378    sv_setpv(cfg, file);
379  }
380
[f2d71cfa]381  sv_setpv(get_sv("BarnOwl::VERSION", TRUE), OWL_VERSION_STRING);
382
[fd8dfe7]383  /* Add the system lib path to @INC */
384  inc = get_av("INC", 0);
[dde1b4d]385  path = g_build_filename(owl_get_datadir(), "lib", NULL);
[fd8dfe7]386  av_unshift(inc, 1);
[d1b1cf6]387  av_store(inc, 0, owl_new_sv(path));
[ddbbcffa]388  g_free(path);
[fd8dfe7]389
390  eval_pv("use BarnOwl;", FALSE);
[f1e629d]391
392  if (SvTRUE(ERRSV)) {
[d4927a7]393    err=g_strdup(SvPV_nolen(ERRSV));
[27c3a93]394    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
[4e0f545]395    return(err);
[f1e629d]396  }
397
398  /* check if we have the formatting function */
[8203afd]399  if (owl_perlconfig_is_function("BarnOwl::format_msg")) {
[f1e629d]400    owl_global_set_config_format(&g, 1);
401  }
402
403  return(NULL);
404}
405
406/* returns whether or not a function exists */
[e19eb97]407int owl_perlconfig_is_function(const char *fn) {
[c415aca]408  if (get_cv(fn, FALSE)) return(1);
[f1e629d]409  else return(0);
410}
411
412/* caller is responsible for freeing returned string */
[6829afc]413CALLER_OWN char *owl_perlconfig_execute(const char *line)
[c3acb0b]414{
[f1e629d]415  STRLEN len;
416  SV *response;
[65b2173]417  char *out;
[f1e629d]418
419  if (!owl_global_have_config(&g)) return NULL;
420
[e0096b7]421  ENTER;
422  SAVETMPS;
[f1e629d]423  /* execute the subroutine */
[c415aca]424  response = eval_pv(line, FALSE);
[f1e629d]425
426  if (SvTRUE(ERRSV)) {
[ce6721f]427    owl_function_error("Perl Error: '%s'", SvPV_nolen(ERRSV));
[27c3a93]428    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
[f1e629d]429  }
430
[d4927a7]431  out = g_strdup(SvPV(response, len));
[e0096b7]432  FREETMPS;
433  LEAVE;
[f1e629d]434
435  return(out);
436}
437
[c08c70a]438void owl_perlconfig_getmsg(const owl_message *m, const char *subname)
[b67ab6b]439{
440  char *ptr = NULL;
441  if (owl_perlconfig_is_function("BarnOwl::Hooks::_receive_msg")) {
442    ptr = owl_perlconfig_call_with_message(subname?subname
443                                           :"BarnOwl::_receive_msg_legacy_wrap", m);
[f1e629d]444  }
[3b8a563]445  g_free(ptr);
[0f9eca7]446}
447
448/* Called on all new messages; receivemsg is only called on incoming ones */
[c08c70a]449void owl_perlconfig_newmsg(const owl_message *m, const char *subname)
[0f9eca7]450{
451  char *ptr = NULL;
452  if (owl_perlconfig_is_function("BarnOwl::Hooks::_new_msg")) {
453    ptr = owl_perlconfig_call_with_message(subname?subname
454                                           :"BarnOwl::Hooks::_new_msg", m);
455  }
[3b8a563]456  g_free(ptr);
[f1e629d]457}
[6922edd]458
[e19eb97]459void owl_perlconfig_new_command(const char *name)
[eb6cedc]460{
461  dSP;
462
463  ENTER;
464  SAVETMPS;
465
466  PUSHMARK(SP);
[d1b1cf6]467  XPUSHs(sv_2mortal(owl_new_sv(name)));
[eb6cedc]468  PUTBACK;
469
[a9237aa]470  call_pv("BarnOwl::Hooks::_new_command", G_VOID|G_EVAL);
[eb6cedc]471
472  SPAGAIN;
473
474  if(SvTRUE(ERRSV)) {
475    owl_function_error("%s", SvPV_nolen(ERRSV));
476  }
477
478  FREETMPS;
479  LEAVE;
480}
481
[d427f08]482/* caller must free the result */
[6829afc]483CALLER_OWN char *owl_perlconfig_perlcmd(const owl_cmd *cmd, int argc, const char *const *argv)
[6922edd]484{
485  int i, count;
486  char * ret = NULL;
[ad15610]487  SV *rv;
[6922edd]488  dSP;
489
490  ENTER;
491  SAVETMPS;
492
493  PUSHMARK(SP);
494  for(i=0;i<argc;i++) {
[d1b1cf6]495    XPUSHs(sv_2mortal(owl_new_sv(argv[i])));
[6922edd]496  }
497  PUTBACK;
498
499  count = call_sv(cmd->cmd_perl, G_SCALAR|G_EVAL);
500
501  SPAGAIN;
502
503  if(SvTRUE(ERRSV)) {
[ce6721f]504    owl_function_error("%s", SvPV_nolen(ERRSV));
[c4ba74d]505    (void)POPs;
[6922edd]506  } else {
507    if(count != 1)
508      croak("Perl command %s returned more than one value!", cmd->name);
[ad15610]509    rv = POPs;
[6922edd]510    if(SvTRUE(rv)) {
[d4927a7]511      ret = g_strdup(SvPV_nolen(rv));
[6922edd]512    }
513  }
514
515  FREETMPS;
516  LEAVE;
517
518  return ret;
519}
520
[8f2d9bf]521void owl_perlconfig_cmd_cleanup(owl_cmd *cmd)
[6922edd]522{
[ff13a6f]523  SvREFCNT_dec(cmd->cmd_perl);
[6922edd]524}
[db8b00b]525
[7803326]526void owl_perlconfig_edit_callback(owl_editwin *e, bool success)
[db8b00b]527{
[4d86e06]528  SV *cb = owl_editwin_get_cbdata(e);
[367fbf3]529  SV *text;
[ad15610]530  dSP;
531
[db8b00b]532  if(cb == NULL) {
533    owl_function_error("Perl callback is NULL!");
[1373d35]534    return;
[db8b00b]535  }
[d1b1cf6]536  text = owl_new_sv(owl_editwin_get_text(e));
[db8b00b]537
538  ENTER;
539  SAVETMPS;
540
541  PUSHMARK(SP);
[367fbf3]542  XPUSHs(sv_2mortal(text));
[7803326]543  XPUSHs(sv_2mortal(newSViv(success)));
[db8b00b]544  PUTBACK;
545 
[e3068de]546  call_sv(cb, G_DISCARD|G_EVAL);
[9364a36]547
548  if(SvTRUE(ERRSV)) {
[ce6721f]549    owl_function_error("%s", SvPV_nolen(ERRSV));
[9364a36]550  }
[db8b00b]551
552  FREETMPS;
553  LEAVE;
[1b1cd2c]554}
[db8b00b]555
[1b1cd2c]556void owl_perlconfig_dec_refcnt(void *data)
557{
558  SV *v = data;
559  SvREFCNT_dec(v);
[db8b00b]560}
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