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1 | /* | |
2 | * This file is part of the libsigrokdecode project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
23 | #include "libsigrokdecode.h" | |
24 | #include <glib.h> | |
25 | ||
26 | /** | |
27 | * @file | |
28 | * | |
29 | * Listing, loading, unloading, and handling protocol decoders. | |
30 | */ | |
31 | ||
32 | /** | |
33 | * @defgroup grp_decoder Protocol decoders | |
34 | * | |
35 | * Handling protocol decoders. | |
36 | * | |
37 | * @{ | |
38 | */ | |
39 | ||
40 | /** @cond PRIVATE */ | |
41 | ||
42 | /* The list of loaded protocol decoders. */ | |
43 | static GSList *pd_list = NULL; | |
44 | ||
45 | /* srd.c */ | |
46 | extern SRD_PRIV GSList *searchpaths; | |
47 | ||
48 | /* session.c */ | |
49 | extern SRD_PRIV GSList *sessions; | |
50 | extern SRD_PRIV int max_session_id; | |
51 | ||
52 | /* module_sigrokdecode.c */ | |
53 | extern SRD_PRIV PyObject *mod_sigrokdecode; | |
54 | ||
55 | /** @endcond */ | |
56 | ||
57 | static gboolean srd_check_init(void) | |
58 | { | |
59 | if (max_session_id < 0) { | |
60 | srd_err("Library is not initialized."); | |
61 | return FALSE; | |
62 | } else | |
63 | return TRUE; | |
64 | } | |
65 | ||
66 | /** | |
67 | * Returns the list of loaded protocol decoders. | |
68 | * | |
69 | * This is a GSList of pointers to struct srd_decoder items. | |
70 | * | |
71 | * @return List of decoders, NULL if none are supported or loaded. | |
72 | * | |
73 | * @since 0.2.0 | |
74 | */ | |
75 | SRD_API const GSList *srd_decoder_list(void) | |
76 | { | |
77 | return pd_list; | |
78 | } | |
79 | ||
80 | /** | |
81 | * Get the decoder with the specified ID. | |
82 | * | |
83 | * @param id The ID string of the decoder to return. | |
84 | * | |
85 | * @return The decoder with the specified ID, or NULL if not found. | |
86 | * | |
87 | * @since 0.1.0 | |
88 | */ | |
89 | SRD_API struct srd_decoder *srd_decoder_get_by_id(const char *id) | |
90 | { | |
91 | GSList *l; | |
92 | struct srd_decoder *dec; | |
93 | ||
94 | for (l = pd_list; l; l = l->next) { | |
95 | dec = l->data; | |
96 | if (!strcmp(dec->id, id)) | |
97 | return dec; | |
98 | } | |
99 | ||
100 | return NULL; | |
101 | } | |
102 | ||
103 | static void channel_free(void *data) | |
104 | { | |
105 | struct srd_channel *ch = data; | |
106 | ||
107 | if (!ch) | |
108 | return; | |
109 | ||
110 | g_free(ch->desc); | |
111 | g_free(ch->name); | |
112 | g_free(ch->id); | |
113 | g_free(ch); | |
114 | } | |
115 | ||
116 | static void variant_free(void *data) | |
117 | { | |
118 | GVariant *var = data; | |
119 | ||
120 | if (!var) | |
121 | return; | |
122 | ||
123 | g_variant_unref(var); | |
124 | } | |
125 | ||
126 | static void annotation_row_free(void *data) | |
127 | { | |
128 | struct srd_decoder_annotation_row *row = data; | |
129 | ||
130 | if (!row) | |
131 | return; | |
132 | ||
133 | g_slist_free(row->ann_classes); | |
134 | g_free(row->desc); | |
135 | g_free(row->id); | |
136 | g_free(row); | |
137 | } | |
138 | ||
139 | static void logic_output_channel_free(void *data) | |
140 | { | |
141 | struct srd_decoder_logic_output_channel *logic_out_ch = data; | |
142 | ||
143 | if (!logic_out_ch) | |
144 | return; | |
145 | ||
146 | g_free(logic_out_ch->desc); | |
147 | g_free(logic_out_ch->id); | |
148 | g_free(logic_out_ch); | |
149 | } | |
150 | ||
151 | static void decoder_option_free(void *data) | |
152 | { | |
153 | struct srd_decoder_option *opt = data; | |
154 | ||
155 | if (!opt) | |
156 | return; | |
157 | ||
158 | g_slist_free_full(opt->values, &variant_free); | |
159 | variant_free(opt->def); | |
160 | g_free(opt->desc); | |
161 | g_free(opt->id); | |
162 | g_free(opt); | |
163 | } | |
164 | ||
165 | static void decoder_free(struct srd_decoder *dec) | |
166 | { | |
167 | PyGILState_STATE gstate; | |
168 | ||
169 | if (!dec) | |
170 | return; | |
171 | ||
172 | gstate = PyGILState_Ensure(); | |
173 | Py_XDECREF(dec->py_dec); | |
174 | Py_XDECREF(dec->py_mod); | |
175 | PyGILState_Release(gstate); | |
176 | ||
177 | g_slist_free_full(dec->options, &decoder_option_free); | |
178 | g_slist_free_full(dec->binary, (GDestroyNotify)&g_strfreev); | |
179 | g_slist_free_full(dec->annotation_rows, &annotation_row_free); | |
180 | g_slist_free_full(dec->annotations, (GDestroyNotify)&g_strfreev); | |
181 | g_slist_free_full(dec->opt_channels, &channel_free); | |
182 | g_slist_free_full(dec->channels, &channel_free); | |
183 | ||
184 | g_slist_free_full(dec->outputs, g_free); | |
185 | g_slist_free_full(dec->inputs, g_free); | |
186 | g_slist_free_full(dec->tags, g_free); | |
187 | g_free(dec->license); | |
188 | g_free(dec->desc); | |
189 | g_free(dec->longname); | |
190 | g_free(dec->name); | |
191 | g_free(dec->id); | |
192 | ||
193 | g_free(dec); | |
194 | } | |
195 | ||
196 | static int get_channels(const struct srd_decoder *d, const char *attr, | |
197 | GSList **out_pdchl, int offset) | |
198 | { | |
199 | PyObject *py_channellist, *py_entry; | |
200 | struct srd_channel *pdch; | |
201 | GSList *pdchl; | |
202 | ssize_t ch_idx; | |
203 | PyGILState_STATE gstate; | |
204 | ||
205 | gstate = PyGILState_Ensure(); | |
206 | ||
207 | if (!PyObject_HasAttrString(d->py_dec, attr)) { | |
208 | /* No channels of this type specified. */ | |
209 | PyGILState_Release(gstate); | |
210 | return SRD_OK; | |
211 | } | |
212 | ||
213 | pdchl = NULL; | |
214 | ||
215 | py_channellist = PyObject_GetAttrString(d->py_dec, attr); | |
216 | if (!py_channellist) | |
217 | goto except_out; | |
218 | ||
219 | if (!PyTuple_Check(py_channellist)) { | |
220 | srd_err("Protocol decoder %s %s attribute is not a tuple.", | |
221 | d->name, attr); | |
222 | goto err_out; | |
223 | } | |
224 | ||
225 | ch_idx = PyTuple_Size(py_channellist); | |
226 | while (ch_idx--) { | |
227 | py_entry = PyTuple_GetItem(py_channellist, ch_idx); | |
228 | if (!py_entry) | |
229 | goto except_out; | |
230 | ||
231 | if (!PyDict_Check(py_entry)) { | |
232 | srd_err("Protocol decoder %s %s attribute is not " | |
233 | "a list of dict elements.", d->name, attr); | |
234 | goto err_out; | |
235 | } | |
236 | pdch = g_malloc(sizeof(struct srd_channel)); | |
237 | /* Add to list right away so it doesn't get lost. */ | |
238 | pdchl = g_slist_prepend(pdchl, pdch); | |
239 | ||
240 | if (py_dictitem_as_str(py_entry, "id", &pdch->id) != SRD_OK) | |
241 | goto err_out; | |
242 | if (py_dictitem_as_str(py_entry, "name", &pdch->name) != SRD_OK) | |
243 | goto err_out; | |
244 | if (py_dictitem_as_str(py_entry, "desc", &pdch->desc) != SRD_OK) | |
245 | goto err_out; | |
246 | ||
247 | pdch->order = offset + ch_idx; | |
248 | } | |
249 | ||
250 | Py_DECREF(py_channellist); | |
251 | *out_pdchl = pdchl; | |
252 | ||
253 | PyGILState_Release(gstate); | |
254 | ||
255 | return SRD_OK; | |
256 | ||
257 | except_out: | |
258 | srd_exception_catch("Failed to get %s list of %s decoder", | |
259 | attr, d->name); | |
260 | ||
261 | err_out: | |
262 | g_slist_free_full(pdchl, &channel_free); | |
263 | Py_XDECREF(py_channellist); | |
264 | PyGILState_Release(gstate); | |
265 | ||
266 | return SRD_ERR_PYTHON; | |
267 | } | |
268 | ||
269 | static int get_options(struct srd_decoder *d) | |
270 | { | |
271 | PyObject *py_opts, *py_opt, *py_str, *py_values, *py_default, *py_item; | |
272 | GSList *options; | |
273 | struct srd_decoder_option *o; | |
274 | GVariant *gvar; | |
275 | ssize_t opt, val_idx; | |
276 | PyGILState_STATE gstate; | |
277 | ||
278 | gstate = PyGILState_Ensure(); | |
279 | ||
280 | if (!PyObject_HasAttrString(d->py_dec, "options")) { | |
281 | /* No options, that's fine. */ | |
282 | PyGILState_Release(gstate); | |
283 | return SRD_OK; | |
284 | } | |
285 | ||
286 | options = NULL; | |
287 | ||
288 | /* If present, options must be a tuple. */ | |
289 | py_opts = PyObject_GetAttrString(d->py_dec, "options"); | |
290 | if (!py_opts) | |
291 | goto except_out; | |
292 | ||
293 | if (!PyTuple_Check(py_opts)) { | |
294 | srd_err("Protocol decoder %s: options attribute is not " | |
295 | "a tuple.", d->id); | |
296 | goto err_out; | |
297 | } | |
298 | ||
299 | for (opt = PyTuple_Size(py_opts) - 1; opt >= 0; opt--) { | |
300 | py_opt = PyTuple_GetItem(py_opts, opt); | |
301 | if (!py_opt) | |
302 | goto except_out; | |
303 | ||
304 | if (!PyDict_Check(py_opt)) { | |
305 | srd_err("Protocol decoder %s options: each option " | |
306 | "must consist of a dictionary.", d->name); | |
307 | goto err_out; | |
308 | } | |
309 | ||
310 | o = g_malloc0(sizeof(struct srd_decoder_option)); | |
311 | /* Add to list right away so it doesn't get lost. */ | |
312 | options = g_slist_prepend(options, o); | |
313 | ||
314 | py_str = PyDict_GetItemString(py_opt, "id"); | |
315 | if (!py_str) { | |
316 | srd_err("Protocol decoder %s option %zd has no ID.", | |
317 | d->name, opt); | |
318 | goto err_out; | |
319 | } | |
320 | if (py_str_as_str(py_str, &o->id) != SRD_OK) | |
321 | goto err_out; | |
322 | ||
323 | py_str = PyDict_GetItemString(py_opt, "desc"); | |
324 | if (py_str) { | |
325 | if (py_str_as_str(py_str, &o->desc) != SRD_OK) | |
326 | goto err_out; | |
327 | } | |
328 | ||
329 | py_default = PyDict_GetItemString(py_opt, "default"); | |
330 | if (py_default) { | |
331 | gvar = py_obj_to_variant(py_default); | |
332 | if (!gvar) { | |
333 | srd_err("Protocol decoder %s option 'default' has " | |
334 | "invalid default value.", d->name); | |
335 | goto err_out; | |
336 | } | |
337 | o->def = g_variant_ref_sink(gvar); | |
338 | } | |
339 | ||
340 | py_values = PyDict_GetItemString(py_opt, "values"); | |
341 | if (py_values) { | |
342 | /* | |
343 | * A default is required if a list of values is | |
344 | * given, since it's used to verify their type. | |
345 | */ | |
346 | if (!o->def) { | |
347 | srd_err("No default for option '%s'.", o->id); | |
348 | goto err_out; | |
349 | } | |
350 | if (!PyTuple_Check(py_values)) { | |
351 | srd_err("Option '%s' values should be a tuple.", o->id); | |
352 | goto err_out; | |
353 | } | |
354 | ||
355 | val_idx = PyTuple_Size(py_values); | |
356 | while (val_idx--) { | |
357 | py_item = PyTuple_GetItem(py_values, val_idx); | |
358 | if (!py_item) | |
359 | goto except_out; | |
360 | ||
361 | if (py_default && (Py_TYPE(py_default) != Py_TYPE(py_item))) { | |
362 | srd_err("All values for option '%s' must be " | |
363 | "of the same type as the default.", | |
364 | o->id); | |
365 | goto err_out; | |
366 | } | |
367 | gvar = py_obj_to_variant(py_item); | |
368 | if (!gvar) { | |
369 | srd_err("Protocol decoder %s option 'values' " | |
370 | "contains invalid value.", d->name); | |
371 | goto err_out; | |
372 | } | |
373 | o->values = g_slist_prepend(o->values, | |
374 | g_variant_ref_sink(gvar)); | |
375 | } | |
376 | } | |
377 | } | |
378 | d->options = options; | |
379 | Py_DECREF(py_opts); | |
380 | PyGILState_Release(gstate); | |
381 | ||
382 | return SRD_OK; | |
383 | ||
384 | except_out: | |
385 | srd_exception_catch("Failed to get %s decoder options", d->name); | |
386 | ||
387 | err_out: | |
388 | g_slist_free_full(options, &decoder_option_free); | |
389 | Py_XDECREF(py_opts); | |
390 | PyGILState_Release(gstate); | |
391 | ||
392 | return SRD_ERR_PYTHON; | |
393 | } | |
394 | ||
395 | /* Convert annotation class attribute to GSList of char **. */ | |
396 | static int get_annotations(struct srd_decoder *dec, size_t *ret_count) | |
397 | { | |
398 | PyObject *py_annlist, *py_ann; | |
399 | GSList *annotations; | |
400 | char **annpair; | |
401 | ssize_t ann_idx; | |
402 | PyGILState_STATE gstate; | |
403 | ||
404 | if (ret_count) | |
405 | *ret_count = 0; | |
406 | ||
407 | gstate = PyGILState_Ensure(); | |
408 | ||
409 | if (!PyObject_HasAttrString(dec->py_dec, "annotations")) { | |
410 | PyGILState_Release(gstate); | |
411 | return SRD_OK; | |
412 | } | |
413 | ||
414 | annotations = NULL; | |
415 | ||
416 | py_annlist = PyObject_GetAttrString(dec->py_dec, "annotations"); | |
417 | if (!py_annlist) | |
418 | goto except_out; | |
419 | ||
420 | if (!PyTuple_Check(py_annlist)) { | |
421 | srd_err("Protocol decoder %s annotations should be a tuple.", | |
422 | dec->name); | |
423 | goto err_out; | |
424 | } | |
425 | ||
426 | ann_idx = PyTuple_Size(py_annlist); | |
427 | if (ret_count) | |
428 | *ret_count = ann_idx; | |
429 | while (ann_idx--) { | |
430 | py_ann = PyTuple_GetItem(py_annlist, ann_idx); | |
431 | if (!py_ann) | |
432 | goto except_out; | |
433 | ||
434 | if (!PyTuple_Check(py_ann) || PyTuple_Size(py_ann) != 2) { | |
435 | srd_err("Protocol decoder %s annotation %zd should be a tuple with two elements.", | |
436 | dec->name, ann_idx + 1); | |
437 | goto err_out; | |
438 | } | |
439 | if (py_strseq_to_char(py_ann, &annpair) != SRD_OK) | |
440 | goto err_out; | |
441 | ||
442 | annotations = g_slist_prepend(annotations, annpair); | |
443 | } | |
444 | dec->annotations = annotations; | |
445 | Py_DECREF(py_annlist); | |
446 | PyGILState_Release(gstate); | |
447 | ||
448 | return SRD_OK; | |
449 | ||
450 | except_out: | |
451 | srd_exception_catch("Failed to get %s decoder annotations", dec->name); | |
452 | ||
453 | err_out: | |
454 | g_slist_free_full(annotations, (GDestroyNotify)&g_strfreev); | |
455 | Py_XDECREF(py_annlist); | |
456 | PyGILState_Release(gstate); | |
457 | ||
458 | return SRD_ERR_PYTHON; | |
459 | } | |
460 | ||
461 | /* Convert annotation_rows to GSList of 'struct srd_decoder_annotation_row'. */ | |
462 | static int get_annotation_rows(struct srd_decoder *dec, size_t cls_count) | |
463 | { | |
464 | const char *py_member_name = "annotation_rows"; | |
465 | ||
466 | PyObject *py_ann_rows, *py_ann_row, *py_ann_classes, *py_item; | |
467 | GSList *annotation_rows; | |
468 | struct srd_decoder_annotation_row *ann_row; | |
469 | ssize_t row_idx, item_idx; | |
470 | size_t class_idx; | |
471 | PyGILState_STATE gstate; | |
472 | ||
473 | gstate = PyGILState_Ensure(); | |
474 | ||
475 | if (!PyObject_HasAttrString(dec->py_dec, py_member_name)) { | |
476 | PyGILState_Release(gstate); | |
477 | return SRD_OK; | |
478 | } | |
479 | ||
480 | annotation_rows = NULL; | |
481 | ||
482 | py_ann_rows = PyObject_GetAttrString(dec->py_dec, py_member_name); | |
483 | if (!py_ann_rows) | |
484 | goto except_out; | |
485 | ||
486 | if (!PyTuple_Check(py_ann_rows)) { | |
487 | srd_err("Protocol decoder %s %s must be a tuple.", | |
488 | dec->name, py_member_name); | |
489 | goto err_out; | |
490 | } | |
491 | ||
492 | row_idx = PyTuple_Size(py_ann_rows); | |
493 | while (row_idx--) { | |
494 | py_ann_row = PyTuple_GetItem(py_ann_rows, row_idx); | |
495 | if (!py_ann_row) | |
496 | goto except_out; | |
497 | ||
498 | if (!PyTuple_Check(py_ann_row) || PyTuple_Size(py_ann_row) != 3) { | |
499 | srd_err("Protocol decoder %s %s must contain only tuples of 3 elements.", | |
500 | dec->name, py_member_name); | |
501 | goto err_out; | |
502 | } | |
503 | ann_row = g_malloc0(sizeof(struct srd_decoder_annotation_row)); | |
504 | /* Add to list right away so it doesn't get lost. */ | |
505 | annotation_rows = g_slist_prepend(annotation_rows, ann_row); | |
506 | ||
507 | py_item = PyTuple_GetItem(py_ann_row, 0); | |
508 | if (!py_item) | |
509 | goto except_out; | |
510 | if (py_str_as_str(py_item, &ann_row->id) != SRD_OK) | |
511 | goto err_out; | |
512 | ||
513 | py_item = PyTuple_GetItem(py_ann_row, 1); | |
514 | if (!py_item) | |
515 | goto except_out; | |
516 | if (py_str_as_str(py_item, &ann_row->desc) != SRD_OK) | |
517 | goto err_out; | |
518 | ||
519 | py_ann_classes = PyTuple_GetItem(py_ann_row, 2); | |
520 | if (!py_ann_classes) | |
521 | goto except_out; | |
522 | ||
523 | if (!PyTuple_Check(py_ann_classes)) { | |
524 | srd_err("Protocol decoder %s %s tuples must have a tuple of numbers as 3rd element.", | |
525 | dec->name, py_member_name); | |
526 | goto err_out; | |
527 | } | |
528 | ||
529 | item_idx = PyTuple_Size(py_ann_classes); | |
530 | while (item_idx--) { | |
531 | py_item = PyTuple_GetItem(py_ann_classes, item_idx); | |
532 | if (!py_item) | |
533 | goto except_out; | |
534 | ||
535 | if (!PyLong_Check(py_item)) { | |
536 | srd_err("Protocol decoder %s annotation row class tuple must only contain numbers.", | |
537 | dec->name); | |
538 | goto err_out; | |
539 | } | |
540 | class_idx = PyLong_AsSize_t(py_item); | |
541 | if (PyErr_Occurred()) | |
542 | goto except_out; | |
543 | if (class_idx >= cls_count) { | |
544 | srd_err("Protocol decoder %s annotation row %zd references invalid class %zu.", | |
545 | dec->name, row_idx, class_idx); | |
546 | goto err_out; | |
547 | } | |
548 | ||
549 | ann_row->ann_classes = g_slist_prepend(ann_row->ann_classes, | |
550 | GSIZE_TO_POINTER(class_idx)); | |
551 | } | |
552 | } | |
553 | dec->annotation_rows = annotation_rows; | |
554 | Py_DECREF(py_ann_rows); | |
555 | PyGILState_Release(gstate); | |
556 | ||
557 | return SRD_OK; | |
558 | ||
559 | except_out: | |
560 | srd_exception_catch("Failed to get %s decoder annotation rows", | |
561 | dec->name); | |
562 | ||
563 | err_out: | |
564 | g_slist_free_full(annotation_rows, &annotation_row_free); | |
565 | Py_XDECREF(py_ann_rows); | |
566 | PyGILState_Release(gstate); | |
567 | ||
568 | return SRD_ERR_PYTHON; | |
569 | } | |
570 | ||
571 | /* Convert binary classes to GSList of char **. */ | |
572 | static int get_binary_classes(struct srd_decoder *dec) | |
573 | { | |
574 | PyObject *py_bin_classes, *py_bin_class; | |
575 | GSList *bin_classes; | |
576 | char **bin; | |
577 | ssize_t bin_idx; | |
578 | PyGILState_STATE gstate; | |
579 | ||
580 | gstate = PyGILState_Ensure(); | |
581 | ||
582 | if (!PyObject_HasAttrString(dec->py_dec, "binary")) { | |
583 | PyGILState_Release(gstate); | |
584 | return SRD_OK; | |
585 | } | |
586 | ||
587 | bin_classes = NULL; | |
588 | ||
589 | py_bin_classes = PyObject_GetAttrString(dec->py_dec, "binary"); | |
590 | if (!py_bin_classes) | |
591 | goto except_out; | |
592 | ||
593 | if (!PyTuple_Check(py_bin_classes)) { | |
594 | srd_err("Protocol decoder %s binary classes should " | |
595 | "be a tuple.", dec->name); | |
596 | goto err_out; | |
597 | } | |
598 | ||
599 | bin_idx = PyTuple_Size(py_bin_classes); | |
600 | while (bin_idx--) { | |
601 | py_bin_class = PyTuple_GetItem(py_bin_classes, bin_idx); | |
602 | if (!py_bin_class) | |
603 | goto except_out; | |
604 | ||
605 | if (!PyTuple_Check(py_bin_class) | |
606 | || PyTuple_Size(py_bin_class) != 2) { | |
607 | srd_err("Protocol decoder %s binary classes should " | |
608 | "consist only of tuples of 2 elements.", | |
609 | dec->name); | |
610 | goto err_out; | |
611 | } | |
612 | if (py_strseq_to_char(py_bin_class, &bin) != SRD_OK) | |
613 | goto err_out; | |
614 | ||
615 | bin_classes = g_slist_prepend(bin_classes, bin); | |
616 | } | |
617 | dec->binary = bin_classes; | |
618 | Py_DECREF(py_bin_classes); | |
619 | PyGILState_Release(gstate); | |
620 | ||
621 | return SRD_OK; | |
622 | ||
623 | except_out: | |
624 | srd_exception_catch("Failed to get %s decoder binary classes", | |
625 | dec->name); | |
626 | ||
627 | err_out: | |
628 | g_slist_free_full(bin_classes, (GDestroyNotify)&g_strfreev); | |
629 | Py_XDECREF(py_bin_classes); | |
630 | PyGILState_Release(gstate); | |
631 | ||
632 | return SRD_ERR_PYTHON; | |
633 | } | |
634 | ||
635 | /* Convert logic_output_channels to GSList of 'struct srd_decoder_logic_output_channel'. */ | |
636 | static int get_logic_output_channels(struct srd_decoder *dec) | |
637 | { | |
638 | PyObject *py_logic_out_chs, *py_logic_out_ch, *py_item; | |
639 | GSList *logic_out_chs; | |
640 | struct srd_decoder_logic_output_channel *logic_out_ch; | |
641 | ssize_t i; | |
642 | PyGILState_STATE gstate; | |
643 | ||
644 | gstate = PyGILState_Ensure(); | |
645 | ||
646 | if (!PyObject_HasAttrString(dec->py_dec, "logic_output_channels")) { | |
647 | PyGILState_Release(gstate); | |
648 | return SRD_OK; | |
649 | } | |
650 | ||
651 | logic_out_chs = NULL; | |
652 | ||
653 | py_logic_out_chs = PyObject_GetAttrString(dec->py_dec, "logic_output_channels"); | |
654 | if (!py_logic_out_chs) | |
655 | goto except_out; | |
656 | ||
657 | if (!PyTuple_Check(py_logic_out_chs)) { | |
658 | srd_err("Protocol decoder %s logic_output_channels " | |
659 | "must be a tuple.", dec->name); | |
660 | goto err_out; | |
661 | } | |
662 | ||
663 | for (i = PyTuple_Size(py_logic_out_chs) - 1; i >= 0; i--) { | |
664 | py_logic_out_ch = PyTuple_GetItem(py_logic_out_chs, i); | |
665 | if (!py_logic_out_ch) | |
666 | goto except_out; | |
667 | ||
668 | if (!PyTuple_Check(py_logic_out_ch) || PyTuple_Size(py_logic_out_ch) != 2) { | |
669 | srd_err("Protocol decoder %s logic_output_channels " | |
670 | "must contain only tuples of 2 elements.", | |
671 | dec->name); | |
672 | goto err_out; | |
673 | } | |
674 | logic_out_ch = g_malloc0(sizeof(*logic_out_ch)); | |
675 | /* Add to list right away so it doesn't get lost. */ | |
676 | logic_out_chs = g_slist_prepend(logic_out_chs, logic_out_ch); | |
677 | ||
678 | py_item = PyTuple_GetItem(py_logic_out_ch, 0); | |
679 | if (!py_item) | |
680 | goto except_out; | |
681 | if (py_str_as_str(py_item, &logic_out_ch->id) != SRD_OK) | |
682 | goto err_out; | |
683 | ||
684 | py_item = PyTuple_GetItem(py_logic_out_ch, 1); | |
685 | if (!py_item) | |
686 | goto except_out; | |
687 | if (py_str_as_str(py_item, &logic_out_ch->desc) != SRD_OK) | |
688 | goto err_out; | |
689 | } | |
690 | dec->logic_output_channels = logic_out_chs; | |
691 | Py_DECREF(py_logic_out_chs); | |
692 | PyGILState_Release(gstate); | |
693 | ||
694 | return SRD_OK; | |
695 | ||
696 | except_out: | |
697 | srd_exception_catch("Failed to get %s decoder logic output channels", | |
698 | dec->name); | |
699 | ||
700 | err_out: | |
701 | g_slist_free_full(logic_out_chs, &logic_output_channel_free); | |
702 | Py_XDECREF(py_logic_out_chs); | |
703 | PyGILState_Release(gstate); | |
704 | ||
705 | return SRD_ERR_PYTHON; | |
706 | } | |
707 | ||
708 | /* Check whether the Decoder class defines the named method. */ | |
709 | static int check_method(PyObject *py_dec, const char *mod_name, | |
710 | const char *method_name) | |
711 | { | |
712 | PyObject *py_method; | |
713 | int is_callable; | |
714 | PyGILState_STATE gstate; | |
715 | ||
716 | gstate = PyGILState_Ensure(); | |
717 | ||
718 | py_method = PyObject_GetAttrString(py_dec, method_name); | |
719 | if (!py_method) { | |
720 | srd_exception_catch("Protocol decoder %s Decoder class " | |
721 | "has no %s() method", mod_name, method_name); | |
722 | PyGILState_Release(gstate); | |
723 | return SRD_ERR_PYTHON; | |
724 | } | |
725 | ||
726 | is_callable = PyCallable_Check(py_method); | |
727 | Py_DECREF(py_method); | |
728 | ||
729 | PyGILState_Release(gstate); | |
730 | ||
731 | if (!is_callable) { | |
732 | srd_err("Protocol decoder %s Decoder class attribute '%s' " | |
733 | "is not a method.", mod_name, method_name); | |
734 | return SRD_ERR_PYTHON; | |
735 | } | |
736 | ||
737 | return SRD_OK; | |
738 | } | |
739 | ||
740 | /** | |
741 | * Get the API version of the specified decoder. | |
742 | * | |
743 | * @param d The decoder to use. Must not be NULL. | |
744 | * | |
745 | * @return The API version of the decoder, or 0 upon errors. | |
746 | * | |
747 | * @private | |
748 | */ | |
749 | SRD_PRIV long srd_decoder_apiver(const struct srd_decoder *d) | |
750 | { | |
751 | PyObject *py_apiver; | |
752 | long apiver; | |
753 | PyGILState_STATE gstate; | |
754 | ||
755 | if (!d) | |
756 | return 0; | |
757 | ||
758 | gstate = PyGILState_Ensure(); | |
759 | ||
760 | py_apiver = PyObject_GetAttrString(d->py_dec, "api_version"); | |
761 | apiver = (py_apiver && PyLong_Check(py_apiver)) | |
762 | ? PyLong_AsLong(py_apiver) : 0; | |
763 | Py_XDECREF(py_apiver); | |
764 | ||
765 | PyGILState_Release(gstate); | |
766 | ||
767 | return apiver; | |
768 | } | |
769 | ||
770 | static gboolean contains_duplicates(GSList *list) | |
771 | { | |
772 | for (GSList *l1 = list; l1; l1 = l1->next) { | |
773 | for (GSList *l2 = l1->next; l2; l2 = l2->next) | |
774 | if (!strcmp(l1->data, l2->data)) | |
775 | return TRUE; | |
776 | } | |
777 | ||
778 | return FALSE; | |
779 | } | |
780 | ||
781 | static gboolean contains_duplicate_ids(GSList *list1, GSList *list2) | |
782 | { | |
783 | for (GSList *l1 = list1; l1; l1 = l1->next) { | |
784 | unsigned int cnt = 0; | |
785 | const char **s1 = l1->data; | |
786 | for (GSList *l2 = list2; l2; l2 = l2->next) { | |
787 | const char **s2 = l2->data; | |
788 | if (!strcmp(s1[0], s2[0])) | |
789 | cnt++; | |
790 | if ((list1 == list2) && cnt > 1) | |
791 | return TRUE; | |
792 | if ((list1 != list2) && cnt > 0) | |
793 | return TRUE; | |
794 | } | |
795 | } | |
796 | ||
797 | return FALSE; | |
798 | } | |
799 | ||
800 | static gboolean contains_duplicate_row_ids(GSList *list1, GSList *list2) | |
801 | { | |
802 | for (GSList *l1 = list1; l1; l1 = l1->next) { | |
803 | unsigned int cnt = 0; | |
804 | const struct srd_decoder_annotation_row *r1 = l1->data; | |
805 | for (GSList *l2 = list2; l2; l2 = l2->next) { | |
806 | const struct srd_decoder_annotation_row *r2 = l2->data; | |
807 | if (!strcmp(r1->id, r2->id)) | |
808 | cnt++; | |
809 | if (cnt > 1) | |
810 | return TRUE; | |
811 | } | |
812 | } | |
813 | ||
814 | return FALSE; | |
815 | } | |
816 | ||
817 | /** | |
818 | * Load a protocol decoder module into the embedded Python interpreter. | |
819 | * | |
820 | * @param module_name The module name to be loaded. | |
821 | * | |
822 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
823 | * | |
824 | * @since 0.1.0 | |
825 | */ | |
826 | SRD_API int srd_decoder_load(const char *module_name) | |
827 | { | |
828 | PyObject *py_basedec; | |
829 | struct srd_decoder *d; | |
830 | long apiver; | |
831 | int is_subclass; | |
832 | const char *fail_txt; | |
833 | PyGILState_STATE gstate; | |
834 | size_t ann_cls_count; | |
835 | ||
836 | if (!srd_check_init()) | |
837 | return SRD_ERR; | |
838 | ||
839 | if (!module_name) | |
840 | return SRD_ERR_ARG; | |
841 | ||
842 | gstate = PyGILState_Ensure(); | |
843 | ||
844 | if (PyDict_GetItemString(PyImport_GetModuleDict(), module_name)) { | |
845 | /* Module was already imported. */ | |
846 | PyGILState_Release(gstate); | |
847 | return SRD_OK; | |
848 | } | |
849 | ||
850 | d = g_malloc0(sizeof(struct srd_decoder)); | |
851 | fail_txt = NULL; | |
852 | ||
853 | d->py_mod = py_import_by_name(module_name); | |
854 | if (!d->py_mod) { | |
855 | fail_txt = "import by name failed"; | |
856 | goto except_out; | |
857 | } | |
858 | ||
859 | if (!mod_sigrokdecode) { | |
860 | srd_err("sigrokdecode module not loaded."); | |
861 | fail_txt = "sigrokdecode(3) not loaded"; | |
862 | goto err_out; | |
863 | } | |
864 | ||
865 | /* Get the 'Decoder' class as Python object. */ | |
866 | d->py_dec = PyObject_GetAttrString(d->py_mod, "Decoder"); | |
867 | if (!d->py_dec) { | |
868 | fail_txt = "no 'Decoder' attribute in imported module"; | |
869 | goto except_out; | |
870 | } | |
871 | ||
872 | py_basedec = PyObject_GetAttrString(mod_sigrokdecode, "Decoder"); | |
873 | if (!py_basedec) { | |
874 | fail_txt = "no 'Decoder' attribute in sigrokdecode(3)"; | |
875 | goto except_out; | |
876 | } | |
877 | ||
878 | is_subclass = PyObject_IsSubclass(d->py_dec, py_basedec); | |
879 | Py_DECREF(py_basedec); | |
880 | ||
881 | if (!is_subclass) { | |
882 | srd_err("Decoder class in protocol decoder module %s is not " | |
883 | "a subclass of sigrokdecode.Decoder.", module_name); | |
884 | fail_txt = "not a subclass of sigrokdecode.Decoder"; | |
885 | goto err_out; | |
886 | } | |
887 | ||
888 | /* | |
889 | * Check that this decoder has the correct PD API version. | |
890 | * PDs of different API versions are incompatible and cannot work. | |
891 | */ | |
892 | apiver = srd_decoder_apiver(d); | |
893 | if (apiver != 3) { | |
894 | srd_exception_catch("Only PD API version 3 is supported, " | |
895 | "decoder %s has version %ld", module_name, apiver); | |
896 | fail_txt = "API version mismatch"; | |
897 | goto err_out; | |
898 | } | |
899 | ||
900 | /* Check Decoder class for required methods. */ | |
901 | ||
902 | if (check_method(d->py_dec, module_name, "reset") != SRD_OK) { | |
903 | fail_txt = "no 'reset()' method"; | |
904 | goto err_out; | |
905 | } | |
906 | ||
907 | if (check_method(d->py_dec, module_name, "start") != SRD_OK) { | |
908 | fail_txt = "no 'start()' method"; | |
909 | goto err_out; | |
910 | } | |
911 | ||
912 | if (check_method(d->py_dec, module_name, "decode") != SRD_OK) { | |
913 | fail_txt = "no 'decode()' method"; | |
914 | goto err_out; | |
915 | } | |
916 | ||
917 | /* Store required fields in newly allocated strings. */ | |
918 | if (py_attr_as_str(d->py_dec, "id", &(d->id)) != SRD_OK) { | |
919 | fail_txt = "no 'id' attribute"; | |
920 | goto err_out; | |
921 | } | |
922 | ||
923 | if (py_attr_as_str(d->py_dec, "name", &(d->name)) != SRD_OK) { | |
924 | fail_txt = "no 'name' attribute"; | |
925 | goto err_out; | |
926 | } | |
927 | ||
928 | if (py_attr_as_str(d->py_dec, "longname", &(d->longname)) != SRD_OK) { | |
929 | fail_txt = "no 'longname' attribute"; | |
930 | goto err_out; | |
931 | } | |
932 | ||
933 | if (py_attr_as_str(d->py_dec, "desc", &(d->desc)) != SRD_OK) { | |
934 | fail_txt = "no 'desc' attribute"; | |
935 | goto err_out; | |
936 | } | |
937 | ||
938 | if (py_attr_as_str(d->py_dec, "license", &(d->license)) != SRD_OK) { | |
939 | fail_txt = "no 'license' attribute"; | |
940 | goto err_out; | |
941 | } | |
942 | ||
943 | if (py_attr_as_strlist(d->py_dec, "inputs", &(d->inputs)) != SRD_OK) { | |
944 | fail_txt = "missing or malformed 'inputs' attribute"; | |
945 | goto err_out; | |
946 | } | |
947 | ||
948 | if (py_attr_as_strlist(d->py_dec, "outputs", &(d->outputs)) != SRD_OK) { | |
949 | fail_txt = "missing or malformed 'outputs' attribute"; | |
950 | goto err_out; | |
951 | } | |
952 | ||
953 | if (py_attr_as_strlist(d->py_dec, "tags", &(d->tags)) != SRD_OK) { | |
954 | fail_txt = "missing or malformed 'tags' attribute"; | |
955 | goto err_out; | |
956 | } | |
957 | ||
958 | /* All options and their default values. */ | |
959 | if (get_options(d) != SRD_OK) { | |
960 | fail_txt = "cannot get options"; | |
961 | goto err_out; | |
962 | } | |
963 | ||
964 | /* Check and import required channels. */ | |
965 | if (get_channels(d, "channels", &d->channels, 0) != SRD_OK) { | |
966 | fail_txt = "cannot get channels"; | |
967 | goto err_out; | |
968 | } | |
969 | ||
970 | /* Check and import optional channels. */ | |
971 | if (get_channels(d, "optional_channels", &d->opt_channels, | |
972 | g_slist_length(d->channels)) != SRD_OK) { | |
973 | fail_txt = "cannot get optional channels"; | |
974 | goto err_out; | |
975 | } | |
976 | ||
977 | if (get_annotations(d, &ann_cls_count) != SRD_OK) { | |
978 | fail_txt = "cannot get annotations"; | |
979 | goto err_out; | |
980 | } | |
981 | ||
982 | if (get_annotation_rows(d, ann_cls_count) != SRD_OK) { | |
983 | fail_txt = "cannot get annotation rows"; | |
984 | goto err_out; | |
985 | } | |
986 | ||
987 | if (get_binary_classes(d) != SRD_OK) { | |
988 | fail_txt = "cannot get binary classes"; | |
989 | goto err_out; | |
990 | } | |
991 | ||
992 | if (contains_duplicates(d->inputs)) { | |
993 | fail_txt = "duplicate input IDs"; | |
994 | goto err_out; | |
995 | } | |
996 | ||
997 | if (contains_duplicates(d->outputs)) { | |
998 | fail_txt = "duplicate output IDs"; | |
999 | goto err_out; | |
1000 | } | |
1001 | ||
1002 | if (contains_duplicates(d->tags)) { | |
1003 | fail_txt = "duplicate tags"; | |
1004 | goto err_out; | |
1005 | } | |
1006 | ||
1007 | if (contains_duplicate_ids(d->channels, d->channels)) { | |
1008 | fail_txt = "duplicate channel IDs"; | |
1009 | goto err_out; | |
1010 | } | |
1011 | ||
1012 | if (contains_duplicate_ids(d->opt_channels, d->opt_channels)) { | |
1013 | fail_txt = "duplicate optional channel IDs"; | |
1014 | goto err_out; | |
1015 | } | |
1016 | ||
1017 | if (contains_duplicate_ids(d->channels, d->opt_channels)) { | |
1018 | fail_txt = "channel and optional channel IDs contain duplicates"; | |
1019 | goto err_out; | |
1020 | } | |
1021 | ||
1022 | if (contains_duplicate_ids(d->options, d->options)) { | |
1023 | fail_txt = "duplicate option IDs"; | |
1024 | goto err_out; | |
1025 | } | |
1026 | ||
1027 | if (contains_duplicate_ids(d->annotations, d->annotations)) { | |
1028 | fail_txt = "duplicate annotation class IDs"; | |
1029 | goto err_out; | |
1030 | } | |
1031 | ||
1032 | if (contains_duplicate_row_ids(d->annotation_rows, d->annotation_rows)) { | |
1033 | fail_txt = "duplicate annotation row IDs"; | |
1034 | goto err_out; | |
1035 | } | |
1036 | ||
1037 | if (contains_duplicate_ids(d->annotations, d->annotation_rows)) { | |
1038 | fail_txt = "annotation class/row IDs contain duplicates"; | |
1039 | goto err_out; | |
1040 | } | |
1041 | ||
1042 | if (contains_duplicate_ids(d->binary, d->binary)) { | |
1043 | fail_txt = "duplicate binary class IDs"; | |
1044 | goto err_out; | |
1045 | } | |
1046 | ||
1047 | if (get_logic_output_channels(d) != SRD_OK) { | |
1048 | fail_txt = "cannot get logic output channels"; | |
1049 | goto err_out; | |
1050 | } | |
1051 | ||
1052 | PyGILState_Release(gstate); | |
1053 | ||
1054 | /* Append it to the list of loaded decoders. */ | |
1055 | pd_list = g_slist_append(pd_list, d); | |
1056 | ||
1057 | return SRD_OK; | |
1058 | ||
1059 | except_out: | |
1060 | /* Don't show a message for the "common" directory, it's not a PD. */ | |
1061 | if (strcmp(module_name, "common")) { | |
1062 | srd_exception_catch("Failed to load decoder %s: %s", | |
1063 | module_name, fail_txt); | |
1064 | } | |
1065 | fail_txt = NULL; | |
1066 | ||
1067 | err_out: | |
1068 | if (fail_txt) | |
1069 | srd_err("Failed to load decoder %s: %s", module_name, fail_txt); | |
1070 | decoder_free(d); | |
1071 | PyGILState_Release(gstate); | |
1072 | ||
1073 | return SRD_ERR_PYTHON; | |
1074 | } | |
1075 | ||
1076 | /** | |
1077 | * Return a protocol decoder's docstring. | |
1078 | * | |
1079 | * @param dec The loaded protocol decoder. Must not be NULL. | |
1080 | * | |
1081 | * @return A newly allocated buffer containing the protocol decoder's | |
1082 | * documentation. The caller is responsible for free'ing the buffer. | |
1083 | * | |
1084 | * @since 0.1.0 | |
1085 | */ | |
1086 | SRD_API char *srd_decoder_doc_get(const struct srd_decoder *dec) | |
1087 | { | |
1088 | PyObject *py_str; | |
1089 | char *doc; | |
1090 | PyGILState_STATE gstate; | |
1091 | ||
1092 | if (!srd_check_init()) | |
1093 | return NULL; | |
1094 | ||
1095 | if (!dec || !dec->py_mod) | |
1096 | return NULL; | |
1097 | ||
1098 | gstate = PyGILState_Ensure(); | |
1099 | ||
1100 | if (!PyObject_HasAttrString(dec->py_mod, "__doc__")) | |
1101 | goto err; | |
1102 | ||
1103 | if (!(py_str = PyObject_GetAttrString(dec->py_mod, "__doc__"))) { | |
1104 | srd_exception_catch("Failed to get docstring"); | |
1105 | goto err; | |
1106 | } | |
1107 | ||
1108 | doc = NULL; | |
1109 | if (py_str != Py_None) | |
1110 | py_str_as_str(py_str, &doc); | |
1111 | Py_DECREF(py_str); | |
1112 | ||
1113 | PyGILState_Release(gstate); | |
1114 | ||
1115 | return doc; | |
1116 | ||
1117 | err: | |
1118 | PyGILState_Release(gstate); | |
1119 | ||
1120 | return NULL; | |
1121 | } | |
1122 | ||
1123 | /** | |
1124 | * Unload the specified protocol decoder. | |
1125 | * | |
1126 | * @param dec The struct srd_decoder to be unloaded. | |
1127 | * | |
1128 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
1129 | * | |
1130 | * @since 0.1.0 | |
1131 | */ | |
1132 | SRD_API int srd_decoder_unload(struct srd_decoder *dec) | |
1133 | { | |
1134 | struct srd_session *sess; | |
1135 | GSList *l; | |
1136 | ||
1137 | if (!srd_check_init()) | |
1138 | return SRD_ERR; | |
1139 | ||
1140 | if (!dec) | |
1141 | return SRD_ERR_ARG; | |
1142 | ||
1143 | /* | |
1144 | * Since any instances of this decoder need to be released as well, | |
1145 | * but they could be anywhere in the stack, just free the entire | |
1146 | * stack. A frontend reloading a decoder thus has to restart all | |
1147 | * instances, and rebuild the stack. | |
1148 | */ | |
1149 | for (l = sessions; l; l = l->next) { | |
1150 | sess = l->data; | |
1151 | srd_inst_free_all(sess); | |
1152 | } | |
1153 | ||
1154 | /* Remove the PD from the list of loaded decoders. */ | |
1155 | pd_list = g_slist_remove(pd_list, dec); | |
1156 | ||
1157 | decoder_free(dec); | |
1158 | ||
1159 | return SRD_OK; | |
1160 | } | |
1161 | ||
1162 | static void srd_decoder_load_all_zip_path(char *zip_path) | |
1163 | { | |
1164 | PyObject *zipimport_mod, *zipimporter_class, *zipimporter; | |
1165 | PyObject *prefix_obj, *files, *key, *value, *set, *modname; | |
1166 | Py_ssize_t pos = 0; | |
1167 | char *prefix; | |
1168 | size_t prefix_len; | |
1169 | PyGILState_STATE gstate; | |
1170 | ||
1171 | set = files = prefix_obj = zipimporter = zipimporter_class = NULL; | |
1172 | ||
1173 | gstate = PyGILState_Ensure(); | |
1174 | ||
1175 | zipimport_mod = py_import_by_name("zipimport"); | |
1176 | if (zipimport_mod == NULL) | |
1177 | goto err_out; | |
1178 | ||
1179 | zipimporter_class = PyObject_GetAttrString(zipimport_mod, "zipimporter"); | |
1180 | if (zipimporter_class == NULL) | |
1181 | goto err_out; | |
1182 | ||
1183 | zipimporter = PyObject_CallFunction(zipimporter_class, "s", zip_path); | |
1184 | if (zipimporter == NULL) | |
1185 | goto err_out; | |
1186 | ||
1187 | prefix_obj = PyObject_GetAttrString(zipimporter, "prefix"); | |
1188 | if (prefix_obj == NULL) | |
1189 | goto err_out; | |
1190 | ||
1191 | files = PyObject_GetAttrString(zipimporter, "_files"); | |
1192 | if (files == NULL || !PyDict_Check(files)) | |
1193 | goto err_out; | |
1194 | ||
1195 | set = PySet_New(NULL); | |
1196 | if (set == NULL) | |
1197 | goto err_out; | |
1198 | ||
1199 | if (py_str_as_str(prefix_obj, &prefix) != SRD_OK) | |
1200 | goto err_out; | |
1201 | ||
1202 | prefix_len = strlen(prefix); | |
1203 | ||
1204 | while (PyDict_Next(files, &pos, &key, &value)) { | |
1205 | char *path, *slash; | |
1206 | if (py_str_as_str(key, &path) == SRD_OK) { | |
1207 | if (strlen(path) > prefix_len | |
1208 | && memcmp(path, prefix, prefix_len) == 0 | |
1209 | && (slash = strchr(path + prefix_len, '/'))) { | |
1210 | ||
1211 | modname = PyUnicode_FromStringAndSize(path + prefix_len, | |
1212 | slash - (path + prefix_len)); | |
1213 | if (modname == NULL) { | |
1214 | PyErr_Clear(); | |
1215 | } else { | |
1216 | PySet_Add(set, modname); | |
1217 | Py_DECREF(modname); | |
1218 | } | |
1219 | } | |
1220 | g_free(path); | |
1221 | } | |
1222 | } | |
1223 | g_free(prefix); | |
1224 | ||
1225 | while ((modname = PySet_Pop(set))) { | |
1226 | char *modname_str; | |
1227 | if (py_str_as_str(modname, &modname_str) == SRD_OK) { | |
1228 | /* The directory name is the module name (e.g. "i2c"). */ | |
1229 | srd_decoder_load(modname_str); | |
1230 | g_free(modname_str); | |
1231 | } | |
1232 | Py_DECREF(modname); | |
1233 | } | |
1234 | ||
1235 | err_out: | |
1236 | Py_XDECREF(set); | |
1237 | Py_XDECREF(files); | |
1238 | Py_XDECREF(prefix_obj); | |
1239 | Py_XDECREF(zipimporter); | |
1240 | Py_XDECREF(zipimporter_class); | |
1241 | Py_XDECREF(zipimport_mod); | |
1242 | PyErr_Clear(); | |
1243 | PyGILState_Release(gstate); | |
1244 | } | |
1245 | ||
1246 | static void srd_decoder_load_all_path(char *path) | |
1247 | { | |
1248 | GDir *dir; | |
1249 | const gchar *direntry; | |
1250 | ||
1251 | if (!(dir = g_dir_open(path, 0, NULL))) { | |
1252 | /* Not really fatal. Try zipimport method too. */ | |
1253 | srd_decoder_load_all_zip_path(path); | |
1254 | return; | |
1255 | } | |
1256 | ||
1257 | /* | |
1258 | * This ignores errors returned by srd_decoder_load(). That | |
1259 | * function will have logged the cause, but in any case we | |
1260 | * want to continue anyway. | |
1261 | */ | |
1262 | while ((direntry = g_dir_read_name(dir)) != NULL) { | |
1263 | /* The directory name is the module name (e.g. "i2c"). */ | |
1264 | srd_decoder_load(direntry); | |
1265 | } | |
1266 | g_dir_close(dir); | |
1267 | } | |
1268 | ||
1269 | /** | |
1270 | * Load all installed protocol decoders. | |
1271 | * | |
1272 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
1273 | * | |
1274 | * @since 0.1.0 | |
1275 | */ | |
1276 | SRD_API int srd_decoder_load_all(void) | |
1277 | { | |
1278 | GSList *l; | |
1279 | ||
1280 | if (!srd_check_init()) | |
1281 | return SRD_ERR; | |
1282 | ||
1283 | for (l = searchpaths; l; l = l->next) | |
1284 | srd_decoder_load_all_path(l->data); | |
1285 | ||
1286 | return SRD_OK; | |
1287 | } | |
1288 | ||
1289 | static void srd_decoder_unload_cb(void *arg, void *ignored) | |
1290 | { | |
1291 | (void)ignored; | |
1292 | ||
1293 | srd_decoder_unload((struct srd_decoder *)arg); | |
1294 | } | |
1295 | ||
1296 | /** | |
1297 | * Unload all loaded protocol decoders. | |
1298 | * | |
1299 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
1300 | * | |
1301 | * @since 0.1.0 | |
1302 | */ | |
1303 | SRD_API int srd_decoder_unload_all(void) | |
1304 | { | |
1305 | g_slist_foreach(pd_list, srd_decoder_unload_cb, NULL); | |
1306 | g_slist_free(pd_list); | |
1307 | pd_list = NULL; | |
1308 | ||
1309 | return SRD_OK; | |
1310 | } | |
1311 | ||
1312 | /** @} */ |