source: perlconfig.c @ c0a90c2

barnowl_perlaimdebianrelease-1.4release-1.5release-1.6release-1.7release-1.8release-1.9
Last change on this file since c0a90c2 was c0a90c2, checked in by Nelson Elhage <nelhage@mit.edu>, 14 years ago
alexmv+yoz's memory leak patches
  • Property mode set to 100644
File size: 7.9 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#include "owl.h"
8#include <perl.h>
9#include "XSUB.h"
10
11static const char fileIdent[] = "$Id$";
12
13extern char *owl_perlwrap_codebuff;
14
15extern XS(boot_owl);
16
17static void owl_perl_xs_init(pTHX)
18{
19  char *file = __FILE__;
20  dXSUB_SYS;
21  {
22    newXS("owl::bootstrap", boot_owl, file);
23  }
24}
25
26SV *owl_perlconfig_message2hashref(owl_message *m)  /*noproto*/
27{
28  HV *h;
29  SV *hr;
30  char *ptr, *blessas;
31  int i, j;
32
33  if (!m) return &PL_sv_undef;
34  h = newHV();
35
36#define MSG2H(h,field) hv_store(h, #field, strlen(#field), \
37                              newSVpv(owl_message_get_##field(m),0), 0)
38
39  if (owl_message_is_type_zephyr(m)
40      && owl_message_is_direction_in(m)) {
41    /* Handle zephyr-specific fields... */
42    AV *av_zfields;
43
44    av_zfields = newAV();
45    j=owl_zephyr_get_num_fields(owl_message_get_notice(m));
46    for (i=0; i<j; i++) {
47      ptr=owl_zephyr_get_field(owl_message_get_notice(m), i+1);
48      av_push(av_zfields, newSVpvn(ptr, strlen(ptr)));
49      owl_free(ptr);
50    }
51    hv_store(h, "fields", strlen("fields"), newRV_noinc((SV*)av_zfields), 0);
52
53    hv_store(h, "auth", strlen("auth"), 
54             newSVpv(owl_zephyr_get_authstr(owl_message_get_notice(m)),0),0);
55  }
56
57  MSG2H(h, type);
58  MSG2H(h, direction);
59  MSG2H(h, class);
60  MSG2H(h, instance);
61  MSG2H(h, sender);
62  MSG2H(h, realm);
63  MSG2H(h, recipient);
64  MSG2H(h, opcode);
65  MSG2H(h, hostname);
66  MSG2H(h, body);
67  MSG2H(h, login);
68  MSG2H(h, zsig);
69  MSG2H(h, zwriteline);
70  if (owl_message_get_header(m)) {
71    MSG2H(h, header); 
72  }
73  hv_store(h, "time", strlen("time"), newSVpv(owl_message_get_timestr(m),0),0);
74  hv_store(h, "id", strlen("id"), newSViv(owl_message_get_id(m)),0);
75  hv_store(h, "deleted", strlen("deleted"), newSViv(owl_message_is_delete(m)),0);
76
77  if (owl_message_is_type_zephyr(m))       blessas = "owl::Message::Zephyr";
78  else if (owl_message_is_type_aim(m))     blessas = "owl::Message::AIM";
79  else if (owl_message_is_type_admin(m))   blessas = "owl::Message::Admin";
80  else if (owl_message_is_type_generic(m)) blessas = "owl::Message::Generic";
81  else                                     blessas = "owl::Message";
82
83  hr = sv_2mortal(newRV_noinc((SV*)h));
84  return sv_bless(hr, gv_stashpv(blessas,0));
85}
86
87
88SV *owl_perlconfig_curmessage2hashref(void) /*noproto*/
89{
90  int curmsg;
91  owl_view *v;
92  v=owl_global_get_current_view(&g);
93  if (owl_view_get_size(v) < 1) {
94    return &PL_sv_undef;
95  }
96  curmsg=owl_global_get_curmsg(&g);
97  return owl_perlconfig_message2hashref(owl_view_get_element(v, curmsg));
98}
99
100
101/* Calls in a scalar context, passing it a hash reference.
102   If return value is non-null, caller must free. */
103char *owl_perlconfig_call_with_message(char *subname, owl_message *m)
104{
105  dSP ;
106  int count, len;
107  SV *msgref, *srv;
108  char *out, *preout;
109 
110  ENTER ;
111  SAVETMPS;
112 
113  PUSHMARK(SP) ;
114  msgref = owl_perlconfig_message2hashref(m);
115  XPUSHs(msgref);
116  PUTBACK ;
117 
118  count = call_pv(subname, G_SCALAR|G_EVAL|G_KEEPERR);
119 
120  SPAGAIN ;
121
122  if (SvTRUE(ERRSV)) {
123    STRLEN n_a;
124    owl_function_error("Perl Error: '%s'", SvPV(ERRSV, n_a));
125    /* and clear the error */
126    sv_setsv (ERRSV, &PL_sv_undef);
127  }
128
129  if (count != 1) {
130    fprintf(stderr, "bad perl!  no biscuit!  returned wrong count!\n");
131    abort();
132  }
133
134  srv = POPs;
135
136  if (srv) {
137    preout=SvPV(srv, len);
138    out = owl_malloc(strlen(preout)+1);
139    strncpy(out, preout, len);
140    out[len] = '\0';
141  } else {
142    out = NULL;
143  }
144 
145  PUTBACK ;
146  FREETMPS ;
147  LEAVE ;
148
149  return out;
150}
151
152char *owl_perlconfig_readconfig(char *file)
153{
154  int ret, fd;
155  PerlInterpreter *p;
156  char filename[1024];
157  char *embedding[5];
158  char *err;
159  struct stat statbuff;
160
161  if (file==NULL) {
162    sprintf(filename, "%s/%s", getenv("HOME"), ".owlconf");
163  } else {
164    strcpy(filename, file);
165  }
166  embedding[0]="";
167  embedding[1]=filename;
168  embedding[2]=0;
169
170  /* create and initialize interpreter */
171  p=perl_alloc();
172  owl_global_set_perlinterp(&g, (void*)p);
173  perl_construct(p);
174
175  owl_global_set_no_have_config(&g);
176
177  /* Before we let perl have at it, we'll do our own checks on the the
178   *  file to see if it's present, readnable etc.
179   */
180
181  /* Not present, start without it */
182  ret=stat(filename, &statbuff);
183  if (ret) {
184    return(NULL);
185  }
186
187  /* present, but stat thinks it's unreadable */
188  if (! (statbuff.st_mode & S_IREAD)) {
189    return(owl_sprintf("%s present but not readable", filename));
190  }
191
192  /* can we open it? */
193  fd=open(filename, O_RDONLY);
194  if (fd==-1) {
195    return(owl_sprintf("could not open %s for reading", filename));
196  }
197  close(fd);
198
199  ret=perl_parse(p, owl_perl_xs_init, 2, embedding, NULL);
200  if (ret || SvTRUE(ERRSV)) {
201    STRLEN n_a;
202    err=owl_strdup(SvPV(ERRSV, n_a));
203    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
204    return(err);
205  }
206
207  ret=perl_run(p);
208  if (ret || SvTRUE(ERRSV)) {
209    STRLEN n_a;
210    err=owl_strdup(SvPV(ERRSV, n_a));
211    sv_setsv(ERRSV, &PL_sv_undef);     /* and clear the error */
212    return(err);
213  }
214
215  owl_global_set_have_config(&g);
216
217  /* create legacy variables */
218  perl_get_sv("owl::id", TRUE);
219  perl_get_sv("owl::class", TRUE);
220  perl_get_sv("owl::instance", TRUE);
221  perl_get_sv("owl::recipient", TRUE);
222  perl_get_sv("owl::sender", TRUE);
223  perl_get_sv("owl::realm", TRUE);
224  perl_get_sv("owl::opcode", TRUE);
225  perl_get_sv("owl::zsig", TRUE);
226  perl_get_sv("owl::msg", TRUE);
227  perl_get_sv("owl::time", TRUE);
228  perl_get_sv("owl::host", TRUE);
229  perl_get_av("owl::fields", TRUE);
230 
231  perl_eval_pv(owl_perlwrap_codebuff, FALSE);
232
233  if (SvTRUE(ERRSV)) {
234    STRLEN n_a;
235    err=owl_strdup(SvPV(ERRSV, n_a));
236    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
237    return(err);
238  }
239
240  /* check if we have the formatting function */
241  if (owl_perlconfig_is_function("owl::format_msg")) {
242    owl_global_set_config_format(&g, 1);
243  }
244
245  return(NULL);
246}
247
248/* returns whether or not a function exists */
249int owl_perlconfig_is_function(char *fn) {
250  if (perl_get_cv(fn, FALSE)) return(1);
251  else return(0);
252}
253
254/* returns 0 on success */
255int owl_perlconfig_get_hashkeys(char *hashname, owl_list *l)
256{
257  HV *hv;
258  HE *he;
259  char *key;
260  I32 i;
261
262  if (owl_list_create(l)) return(-1);
263  hv = get_hv(hashname, FALSE);
264  if (!hv) return(-1);
265  i = hv_iterinit(hv);
266  while ((he = hv_iternext(hv))) {
267    key = hv_iterkey(he, &i);
268    if (key) {
269      owl_list_append_element(l, owl_strdup(key));
270    }
271  }
272  return(0);
273}
274
275/* caller is responsible for freeing returned string */
276char *owl_perlconfig_execute(char *line)
277{
278  STRLEN len;
279  SV *response;
280  char *out, *preout;
281
282  if (!owl_global_have_config(&g)) return NULL;
283
284  /* execute the subroutine */
285  response = perl_eval_pv(line, FALSE);
286
287  if (SvTRUE(ERRSV)) {
288    STRLEN n_a;
289    owl_function_error("Perl Error: '%s'", SvPV(ERRSV, n_a));
290    sv_setsv (ERRSV, &PL_sv_undef);     /* and clear the error */
291  }
292
293  preout=SvPV(response, len);
294  /* leave enough space in case we have to add a newline */
295  out = owl_malloc(strlen(preout)+2);
296  strncpy(out, preout, len);
297  out[len] = '\0';
298  if (!strlen(out) || out[strlen(out)-1]!='\n') {
299    strcat(out, "\n");
300  }
301
302  return(out);
303}
304
305char *owl_perlconfig_getmsg(owl_message *m, int mode, char *subname)
306{ 
307  /* if mode==1 we are doing message formatting.  The returned
308   * formatted message needs to be freed by the caller.
309   *
310   * if mode==0 we are just doing the message-has-been-received
311   * thing.
312   */
313  if (!owl_global_have_config(&g)) return(NULL);
314 
315  /* run the procedure corresponding to the mode */
316  if (mode==1) {
317    char *ret = NULL;
318    ret = owl_perlconfig_call_with_message(subname?subname
319                                           :"owl::_format_msg_legacy_wrap", m);
320    if (!ret) {
321      ret = owl_sprintf("@b([Perl Message Formatting Failed!])\n");
322    } 
323    return ret;
324  } else {
325    char *ptr = NULL;
326    if (owl_perlconfig_is_function("owl::receive_msg")) {
327      ptr = owl_perlconfig_call_with_message(subname?subname
328                                       :"owl::_receive_msg_legacy_wrap", m);
329    }
330    if (ptr) owl_free(ptr);
331    return(NULL);
332  }
333}
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