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ece9304c | 1 | /* |
8020d79b | 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. |
ece9304c RL |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #include <openssl/core_names.h> | |
11 | #include <openssl/bio.h> | |
12 | #include <openssl/params.h> | |
13 | #include <openssl/provider.h> | |
66066e1b DDO |
14 | #include <openssl/evperr.h> |
15 | #include <openssl/ecerr.h> | |
39a61e69 | 16 | #include <openssl/pkcs12err.h> |
66066e1b | 17 | #include <openssl/x509err.h> |
de5008a4 | 18 | #include <openssl/trace.h> |
141cc94e | 19 | #include "internal/bio.h" |
9379bf94 | 20 | #include "internal/provider.h" |
63f187cf | 21 | #include "crypto/decoder.h" |
ece9304c | 22 | #include "encoder_local.h" |
d5f9166b | 23 | #include "internal/e_os.h" |
ece9304c RL |
24 | |
25 | struct decoder_process_data_st { | |
26 | OSSL_DECODER_CTX *ctx; | |
27 | ||
28 | /* Current BIO */ | |
29 | BIO *bio; | |
30 | ||
31 | /* Index of the current decoder instance to be processed */ | |
bd7a6f16 | 32 | size_t current_decoder_inst_index; |
57acc56b RL |
33 | /* For tracing, count recursion level */ |
34 | size_t recursion; | |
f9965953 RL |
35 | |
36 | /*- | |
37 | * Flags | |
38 | */ | |
39 | unsigned int flag_next_level_called : 1; | |
40 | unsigned int flag_construct_called : 1; | |
73dd5d67 | 41 | unsigned int flag_input_structure_checked : 1; |
ece9304c RL |
42 | }; |
43 | ||
44 | static int decoder_process(const OSSL_PARAM params[], void *arg); | |
45 | ||
46 | int OSSL_DECODER_from_bio(OSSL_DECODER_CTX *ctx, BIO *in) | |
47 | { | |
48 | struct decoder_process_data_st data; | |
49 | int ok = 0; | |
7a45d51c | 50 | BIO *new_bio = NULL; |
ab7554e5 | 51 | unsigned long lasterr; |
ece9304c | 52 | |
42e97dde SL |
53 | if (in == NULL) { |
54 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
55 | return 0; | |
56 | } | |
57 | ||
40692ed7 MC |
58 | if (OSSL_DECODER_CTX_get_num_decoders(ctx) == 0) { |
59 | ERR_raise_data(ERR_LIB_OSSL_DECODER, OSSL_DECODER_R_DECODER_NOT_FOUND, | |
60 | "No decoders were found. For standard decoders you need " | |
61 | "at least one of the default or base providers " | |
62 | "available. Did you forget to load them?"); | |
63 | return 0; | |
64 | } | |
65 | ||
ab7554e5 TM |
66 | lasterr = ERR_peek_last_error(); |
67 | ||
7a45d51c SL |
68 | if (BIO_tell(in) < 0) { |
69 | new_bio = BIO_new(BIO_f_readbuffer()); | |
70 | if (new_bio == NULL) | |
71 | return 0; | |
72 | in = BIO_push(new_bio, in); | |
73 | } | |
ece9304c RL |
74 | memset(&data, 0, sizeof(data)); |
75 | data.ctx = ctx; | |
76 | data.bio = in; | |
77 | ||
a517edec RL |
78 | /* Enable passphrase caching */ |
79 | (void)ossl_pw_enable_passphrase_caching(&ctx->pwdata); | |
80 | ||
ece9304c RL |
81 | ok = decoder_process(NULL, &data); |
82 | ||
f9965953 RL |
83 | if (!data.flag_construct_called) { |
84 | const char *spaces | |
85 | = ctx->start_input_type != NULL && ctx->input_structure != NULL | |
86 | ? " " : ""; | |
87 | const char *input_type_label | |
88 | = ctx->start_input_type != NULL ? "Input type: " : ""; | |
89 | const char *input_structure_label | |
90 | = ctx->input_structure != NULL ? "Input structure: " : ""; | |
91 | const char *comma | |
92 | = ctx->start_input_type != NULL && ctx->input_structure != NULL | |
93 | ? ", " : ""; | |
94 | const char *input_type | |
95 | = ctx->start_input_type != NULL ? ctx->start_input_type : ""; | |
96 | const char *input_structure | |
97 | = ctx->input_structure != NULL ? ctx->input_structure : ""; | |
98 | ||
ab7554e5 TM |
99 | if (ERR_peek_last_error() == lasterr || ERR_peek_error() == 0) |
100 | /* Prevent spurious decoding error but add at least something */ | |
d9efb24d | 101 | ERR_raise_data(ERR_LIB_OSSL_DECODER, ERR_R_UNSUPPORTED, |
4d2d4b4b | 102 | "No supported data to decode. %s%s%s%s%s%s", |
d9efb24d DDO |
103 | spaces, input_type_label, input_type, comma, |
104 | input_structure_label, input_structure); | |
f9965953 RL |
105 | ok = 0; |
106 | } | |
107 | ||
ece9304c | 108 | /* Clear any internally cached passphrase */ |
a517edec RL |
109 | (void)ossl_pw_clear_passphrase_cache(&ctx->pwdata); |
110 | ||
7a45d51c SL |
111 | if (new_bio != NULL) { |
112 | BIO_pop(new_bio); | |
113 | BIO_free(new_bio); | |
114 | } | |
ece9304c RL |
115 | return ok; |
116 | } | |
117 | ||
118 | #ifndef OPENSSL_NO_STDIO | |
119 | static BIO *bio_from_file(FILE *fp) | |
120 | { | |
121 | BIO *b; | |
122 | ||
123 | if ((b = BIO_new(BIO_s_file())) == NULL) { | |
124 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_BIO_LIB); | |
125 | return NULL; | |
126 | } | |
127 | BIO_set_fp(b, fp, BIO_NOCLOSE); | |
128 | return b; | |
129 | } | |
130 | ||
131 | int OSSL_DECODER_from_fp(OSSL_DECODER_CTX *ctx, FILE *fp) | |
132 | { | |
133 | BIO *b = bio_from_file(fp); | |
134 | int ret = 0; | |
135 | ||
136 | if (b != NULL) | |
137 | ret = OSSL_DECODER_from_bio(ctx, b); | |
138 | ||
139 | BIO_free(b); | |
140 | return ret; | |
141 | } | |
142 | #endif | |
143 | ||
25cf949f RL |
144 | int OSSL_DECODER_from_data(OSSL_DECODER_CTX *ctx, const unsigned char **pdata, |
145 | size_t *pdata_len) | |
146 | { | |
147 | BIO *membio; | |
148 | int ret = 0; | |
149 | ||
150 | if (pdata == NULL || *pdata == NULL || pdata_len == NULL) { | |
151 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
152 | return 0; | |
153 | } | |
154 | ||
155 | membio = BIO_new_mem_buf(*pdata, (int)*pdata_len); | |
156 | if (OSSL_DECODER_from_bio(ctx, membio)) { | |
157 | *pdata_len = (size_t)BIO_get_mem_data(membio, pdata); | |
158 | ret = 1; | |
159 | } | |
160 | BIO_free(membio); | |
161 | ||
162 | return ret; | |
163 | } | |
164 | ||
ebfdb63d RL |
165 | int OSSL_DECODER_CTX_set_selection(OSSL_DECODER_CTX *ctx, int selection) |
166 | { | |
167 | if (!ossl_assert(ctx != NULL)) { | |
168 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | /* | |
173 | * 0 is a valid selection, and means that the caller leaves | |
174 | * it to code to discover what the selection is. | |
175 | */ | |
176 | ctx->selection = selection; | |
177 | return 1; | |
178 | } | |
179 | ||
ece9304c RL |
180 | int OSSL_DECODER_CTX_set_input_type(OSSL_DECODER_CTX *ctx, |
181 | const char *input_type) | |
182 | { | |
183 | if (!ossl_assert(ctx != NULL)) { | |
184 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* | |
189 | * NULL is a valid starting input type, and means that the caller leaves | |
190 | * it to code to discover what the starting input type is. | |
191 | */ | |
192 | ctx->start_input_type = input_type; | |
193 | return 1; | |
194 | } | |
195 | ||
ebfdb63d RL |
196 | int OSSL_DECODER_CTX_set_input_structure(OSSL_DECODER_CTX *ctx, |
197 | const char *input_structure) | |
198 | { | |
199 | if (!ossl_assert(ctx != NULL)) { | |
200 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* | |
4489655c DB |
205 | * NULL is a valid starting input structure, and means that the caller |
206 | * leaves it to code to discover what the starting input structure is. | |
ebfdb63d RL |
207 | */ |
208 | ctx->input_structure = input_structure; | |
209 | return 1; | |
210 | } | |
211 | ||
63f187cf RL |
212 | OSSL_DECODER_INSTANCE *ossl_decoder_instance_new(OSSL_DECODER *decoder, |
213 | void *decoderctx) | |
ece9304c RL |
214 | { |
215 | OSSL_DECODER_INSTANCE *decoder_inst = NULL; | |
9379bf94 RL |
216 | const OSSL_PROVIDER *prov; |
217 | OSSL_LIB_CTX *libctx; | |
218 | const OSSL_PROPERTY_LIST *props; | |
219 | const OSSL_PROPERTY_DEFINITION *prop; | |
ece9304c | 220 | |
63f187cf | 221 | if (!ossl_assert(decoder != NULL)) { |
ece9304c RL |
222 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); |
223 | return 0; | |
224 | } | |
225 | ||
ece9304c RL |
226 | if ((decoder_inst = OPENSSL_zalloc(sizeof(*decoder_inst))) == NULL) { |
227 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
228 | return 0; | |
229 | } | |
230 | if (!OSSL_DECODER_up_ref(decoder)) { | |
231 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INTERNAL_ERROR); | |
232 | goto err; | |
233 | } | |
ece9304c | 234 | |
9379bf94 RL |
235 | prov = OSSL_DECODER_get0_provider(decoder); |
236 | libctx = ossl_provider_libctx(prov); | |
237 | props = ossl_decoder_parsed_properties(decoder); | |
238 | if (props == NULL) { | |
239 | ERR_raise_data(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROPERTY_DEFINITION, | |
240 | "there are no property definitions with decoder %s", | |
241 | OSSL_DECODER_get0_name(decoder)); | |
ece9304c | 242 | goto err; |
9379bf94 RL |
243 | } |
244 | ||
245 | /* The "input" property is mandatory */ | |
246 | prop = ossl_property_find_property(props, libctx, "input"); | |
247 | decoder_inst->input_type = ossl_property_get_string_value(libctx, prop); | |
248 | if (decoder_inst->input_type == NULL) { | |
249 | ERR_raise_data(ERR_LIB_OSSL_DECODER, ERR_R_INVALID_PROPERTY_DEFINITION, | |
250 | "the mandatory 'input' property is missing " | |
251 | "for decoder %s (properties: %s)", | |
252 | OSSL_DECODER_get0_name(decoder), | |
253 | OSSL_DECODER_get0_properties(decoder)); | |
254 | goto err; | |
255 | } | |
256 | ||
257 | /* The "structure" property is optional */ | |
258 | prop = ossl_property_find_property(props, libctx, "structure"); | |
259 | if (prop != NULL) { | |
260 | decoder_inst->input_structure | |
261 | = ossl_property_get_string_value(libctx, prop); | |
262 | } | |
ece9304c | 263 | |
63f187cf RL |
264 | decoder_inst->decoder = decoder; |
265 | decoder_inst->decoderctx = decoderctx; | |
266 | return decoder_inst; | |
ece9304c | 267 | err: |
63f187cf RL |
268 | ossl_decoder_instance_free(decoder_inst); |
269 | return NULL; | |
270 | } | |
271 | ||
272 | void ossl_decoder_instance_free(OSSL_DECODER_INSTANCE *decoder_inst) | |
273 | { | |
ece9304c RL |
274 | if (decoder_inst != NULL) { |
275 | if (decoder_inst->decoder != NULL) | |
bd7a6f16 | 276 | decoder_inst->decoder->freectx(decoder_inst->decoderctx); |
63f187cf | 277 | decoder_inst->decoderctx = NULL; |
ece9304c | 278 | OSSL_DECODER_free(decoder_inst->decoder); |
63f187cf | 279 | decoder_inst->decoder = NULL; |
ece9304c RL |
280 | OPENSSL_free(decoder_inst); |
281 | } | |
63f187cf RL |
282 | } |
283 | ||
284 | int ossl_decoder_ctx_add_decoder_inst(OSSL_DECODER_CTX *ctx, | |
ebfdb63d | 285 | OSSL_DECODER_INSTANCE *di) |
63f187cf | 286 | { |
de5008a4 RL |
287 | int ok; |
288 | ||
63f187cf RL |
289 | if (ctx->decoder_insts == NULL |
290 | && (ctx->decoder_insts = | |
291 | sk_OSSL_DECODER_INSTANCE_new_null()) == NULL) { | |
292 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
293 | return 0; | |
294 | } | |
295 | ||
de5008a4 RL |
296 | ok = (sk_OSSL_DECODER_INSTANCE_push(ctx->decoder_insts, di) > 0); |
297 | if (ok) { | |
298 | OSSL_TRACE_BEGIN(DECODER) { | |
299 | BIO_printf(trc_out, | |
ef2194c4 RL |
300 | "(ctx %p) Added decoder instance %p for decoder %p\n" |
301 | " %s with %s\n", | |
302 | (void *)ctx, (void *)di, (void *)di->decoder, | |
303 | OSSL_DECODER_get0_name(di->decoder), | |
304 | OSSL_DECODER_get0_properties(di->decoder)); | |
de5008a4 RL |
305 | } OSSL_TRACE_END(DECODER); |
306 | } | |
307 | return ok; | |
63f187cf RL |
308 | } |
309 | ||
48b62fb3 | 310 | int OSSL_DECODER_CTX_add_decoder(OSSL_DECODER_CTX *ctx, OSSL_DECODER *decoder) |
63f187cf RL |
311 | { |
312 | OSSL_DECODER_INSTANCE *decoder_inst = NULL; | |
313 | const OSSL_PROVIDER *prov = NULL; | |
314 | void *decoderctx = NULL; | |
315 | void *provctx = NULL; | |
316 | ||
317 | if (!ossl_assert(ctx != NULL) || !ossl_assert(decoder != NULL)) { | |
318 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
319 | return 0; | |
320 | } | |
321 | ||
ed576acd | 322 | prov = OSSL_DECODER_get0_provider(decoder); |
63f187cf RL |
323 | provctx = OSSL_PROVIDER_get0_provider_ctx(prov); |
324 | ||
325 | if ((decoderctx = decoder->newctx(provctx)) == NULL | |
326 | || (decoder_inst = | |
327 | ossl_decoder_instance_new(decoder, decoderctx)) == NULL) | |
328 | goto err; | |
329 | /* Avoid double free of decoderctx on further errors */ | |
330 | decoderctx = NULL; | |
331 | ||
332 | if (!ossl_decoder_ctx_add_decoder_inst(ctx, decoder_inst)) | |
333 | goto err; | |
334 | ||
335 | return 1; | |
336 | err: | |
337 | ossl_decoder_instance_free(decoder_inst); | |
338 | if (decoderctx != NULL) | |
339 | decoder->freectx(decoderctx); | |
ece9304c RL |
340 | return 0; |
341 | } | |
342 | ||
8ea5a6b5 RL |
343 | struct collect_extra_decoder_data_st { |
344 | OSSL_DECODER_CTX *ctx; | |
345 | const char *output_type; | |
346 | /* | |
347 | * 0 to check that the decoder's input type is the same as the decoder name | |
348 | * 1 to check that the decoder's input type differs from the decoder name | |
349 | */ | |
350 | enum { IS_SAME = 0, IS_DIFFERENT = 1 } type_check; | |
351 | size_t w_prev_start, w_prev_end; /* "previous" decoders */ | |
352 | size_t w_new_start, w_new_end; /* "new" decoders */ | |
353 | }; | |
354 | ||
f7720869 MC |
355 | DEFINE_STACK_OF(OSSL_DECODER) |
356 | ||
357 | static void collect_all_decoders(OSSL_DECODER *decoder, void *arg) | |
358 | { | |
359 | STACK_OF(OSSL_DECODER) *skdecoders = arg; | |
360 | ||
361 | if (OSSL_DECODER_up_ref(decoder)) | |
362 | sk_OSSL_DECODER_push(skdecoders, decoder); | |
363 | } | |
364 | ||
8ea5a6b5 RL |
365 | static void collect_extra_decoder(OSSL_DECODER *decoder, void *arg) |
366 | { | |
367 | struct collect_extra_decoder_data_st *data = arg; | |
368 | size_t j; | |
369 | const OSSL_PROVIDER *prov = OSSL_DECODER_get0_provider(decoder); | |
370 | void *provctx = OSSL_PROVIDER_get0_provider_ctx(prov); | |
371 | ||
372 | if (OSSL_DECODER_is_a(decoder, data->output_type)) { | |
373 | void *decoderctx = NULL; | |
374 | OSSL_DECODER_INSTANCE *di = NULL; | |
375 | ||
ef2194c4 RL |
376 | OSSL_TRACE_BEGIN(DECODER) { |
377 | BIO_printf(trc_out, | |
378 | "(ctx %p) [%d] Checking out decoder %p:\n" | |
379 | " %s with %s\n", | |
380 | (void *)data->ctx, data->type_check, (void *)decoder, | |
381 | OSSL_DECODER_get0_name(decoder), | |
382 | OSSL_DECODER_get0_properties(decoder)); | |
383 | } OSSL_TRACE_END(DECODER); | |
384 | ||
8ea5a6b5 RL |
385 | /* |
386 | * Check that we don't already have this decoder in our stack, | |
387 | * starting with the previous windows but also looking at what | |
388 | * we have added in the current window. | |
389 | */ | |
390 | for (j = data->w_prev_start; j < data->w_new_end; j++) { | |
391 | OSSL_DECODER_INSTANCE *check_inst = | |
392 | sk_OSSL_DECODER_INSTANCE_value(data->ctx->decoder_insts, j); | |
393 | ||
ef2194c4 | 394 | if (decoder->base.algodef == check_inst->decoder->base.algodef) { |
8ea5a6b5 | 395 | /* We found it, so don't do anything more */ |
ef2194c4 RL |
396 | OSSL_TRACE_BEGIN(DECODER) { |
397 | BIO_printf(trc_out, | |
398 | " REJECTED: already exists in the chain\n"); | |
399 | } OSSL_TRACE_END(DECODER); | |
8ea5a6b5 | 400 | return; |
ef2194c4 | 401 | } |
8ea5a6b5 RL |
402 | } |
403 | ||
404 | if ((decoderctx = decoder->newctx(provctx)) == NULL) | |
405 | return; | |
406 | ||
407 | if ((di = ossl_decoder_instance_new(decoder, decoderctx)) == NULL) { | |
408 | decoder->freectx(decoderctx); | |
409 | return; | |
410 | } | |
411 | ||
412 | switch (data->type_check) { | |
413 | case IS_SAME: | |
414 | /* If it differs, this is not a decoder to add for now. */ | |
415 | if (!OSSL_DECODER_is_a(decoder, | |
416 | OSSL_DECODER_INSTANCE_get_input_type(di))) { | |
417 | ossl_decoder_instance_free(di); | |
ef2194c4 RL |
418 | OSSL_TRACE_BEGIN(DECODER) { |
419 | BIO_printf(trc_out, | |
420 | " REJECTED: input type doesn't match output type\n"); | |
421 | } OSSL_TRACE_END(DECODER); | |
8ea5a6b5 RL |
422 | return; |
423 | } | |
424 | break; | |
425 | case IS_DIFFERENT: | |
426 | /* If it's the same, this is not a decoder to add for now. */ | |
427 | if (OSSL_DECODER_is_a(decoder, | |
428 | OSSL_DECODER_INSTANCE_get_input_type(di))) { | |
429 | ossl_decoder_instance_free(di); | |
ef2194c4 RL |
430 | OSSL_TRACE_BEGIN(DECODER) { |
431 | BIO_printf(trc_out, | |
432 | " REJECTED: input type matches output type\n"); | |
433 | } OSSL_TRACE_END(DECODER); | |
8ea5a6b5 RL |
434 | return; |
435 | } | |
436 | break; | |
437 | } | |
438 | ||
439 | /* | |
440 | * Apart from keeping w_new_end up to date, We don't care about | |
441 | * errors here. If it doesn't collect, then it doesn't... | |
442 | */ | |
443 | if (!ossl_decoder_ctx_add_decoder_inst(data->ctx, di)) { | |
444 | ossl_decoder_instance_free(di); | |
445 | return; | |
446 | } | |
447 | ||
448 | data->w_new_end++; | |
449 | } | |
450 | } | |
451 | ||
ece9304c | 452 | int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx, |
b4250010 | 453 | OSSL_LIB_CTX *libctx, const char *propq) |
ece9304c RL |
454 | { |
455 | /* | |
456 | * This function goes through existing decoder methods in | |
457 | * |ctx->decoder_insts|, and tries to fetch new decoders that produce | |
458 | * what the existing ones want as input, and push those newly fetched | |
459 | * decoders on top of the same stack. | |
460 | * Then it does the same again, but looping over the newly fetched | |
ebfdb63d | 461 | * decoders, until there are no more decoders to be fetched, or |
ece9304c RL |
462 | * when we have done this 10 times. |
463 | * | |
464 | * we do this with sliding windows on the stack by keeping track of indexes | |
465 | * and of the end. | |
466 | * | |
467 | * +----------------+ | |
468 | * | DER to RSA | <--- w_prev_start | |
469 | * +----------------+ | |
470 | * | DER to DSA | | |
471 | * +----------------+ | |
472 | * | DER to DH | | |
473 | * +----------------+ | |
474 | * | PEM to DER | <--- w_prev_end, w_new_start | |
475 | * +----------------+ | |
476 | * <--- w_new_end | |
477 | */ | |
8ea5a6b5 | 478 | struct collect_extra_decoder_data_st data; |
ece9304c | 479 | size_t depth = 0; /* Counts the number of iterations */ |
8ea5a6b5 | 480 | size_t count; /* Calculates how many were added in each iteration */ |
f7720869 MC |
481 | size_t numdecoders; |
482 | STACK_OF(OSSL_DECODER) *skdecoders; | |
ece9304c RL |
483 | |
484 | if (!ossl_assert(ctx != NULL)) { | |
485 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* | |
490 | * If there is no stack of OSSL_DECODER_INSTANCE, we have nothing | |
491 | * more to add. That's fine. | |
492 | */ | |
493 | if (ctx->decoder_insts == NULL) | |
494 | return 1; | |
495 | ||
ef2194c4 RL |
496 | OSSL_TRACE_BEGIN(DECODER) { |
497 | BIO_printf(trc_out, "(ctx %p) Looking for extra decoders\n", | |
498 | (void *)ctx); | |
499 | } OSSL_TRACE_END(DECODER); | |
500 | ||
f7720869 MC |
501 | |
502 | skdecoders = sk_OSSL_DECODER_new_null(); | |
503 | if (skdecoders == NULL) { | |
504 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
505 | return 0; | |
506 | } | |
507 | OSSL_DECODER_do_all_provided(libctx, collect_all_decoders, skdecoders); | |
508 | numdecoders = sk_OSSL_DECODER_num(skdecoders); | |
509 | ||
8ea5a6b5 RL |
510 | memset(&data, 0, sizeof(data)); |
511 | data.ctx = ctx; | |
512 | data.w_prev_start = 0; | |
513 | data.w_prev_end = sk_OSSL_DECODER_INSTANCE_num(ctx->decoder_insts); | |
ece9304c | 514 | do { |
f7720869 | 515 | size_t i, j; |
ece9304c | 516 | |
8ea5a6b5 | 517 | data.w_new_start = data.w_new_end = data.w_prev_end; |
ece9304c | 518 | |
8ea5a6b5 RL |
519 | /* |
520 | * Two iterations: | |
521 | * 0. All decoders that have the same name as their input type. | |
522 | * This allows for decoders that unwrap some data in a specific | |
523 | * encoding, and pass the result on with the same encoding. | |
524 | * 1. All decoders that a different name than their input type. | |
525 | */ | |
526 | for (data.type_check = IS_SAME; | |
527 | data.type_check <= IS_DIFFERENT; | |
528 | data.type_check++) { | |
529 | for (i = data.w_prev_start; i < data.w_prev_end; i++) { | |
530 | OSSL_DECODER_INSTANCE *decoder_inst = | |
531 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); | |
ece9304c | 532 | |
8ea5a6b5 RL |
533 | data.output_type |
534 | = OSSL_DECODER_INSTANCE_get_input_type(decoder_inst); | |
535 | ||
536 | ||
f7720869 MC |
537 | for (j = 0; j < numdecoders; j++) |
538 | collect_extra_decoder(sk_OSSL_DECODER_value(skdecoders, j), | |
539 | &data); | |
8ea5a6b5 | 540 | } |
ece9304c RL |
541 | } |
542 | /* How many were added in this iteration */ | |
8ea5a6b5 | 543 | count = data.w_new_end - data.w_new_start; |
ece9304c RL |
544 | |
545 | /* Slide the "previous decoder" windows */ | |
8ea5a6b5 RL |
546 | data.w_prev_start = data.w_new_start; |
547 | data.w_prev_end = data.w_new_end; | |
ece9304c RL |
548 | |
549 | depth++; | |
550 | } while (count != 0 && depth <= 10); | |
551 | ||
f7720869 | 552 | sk_OSSL_DECODER_pop_free(skdecoders, OSSL_DECODER_free); |
ece9304c RL |
553 | return 1; |
554 | } | |
555 | ||
48b62fb3 | 556 | int OSSL_DECODER_CTX_get_num_decoders(OSSL_DECODER_CTX *ctx) |
ece9304c RL |
557 | { |
558 | if (ctx == NULL || ctx->decoder_insts == NULL) | |
559 | return 0; | |
560 | return sk_OSSL_DECODER_INSTANCE_num(ctx->decoder_insts); | |
561 | } | |
562 | ||
563 | int OSSL_DECODER_CTX_set_construct(OSSL_DECODER_CTX *ctx, | |
564 | OSSL_DECODER_CONSTRUCT *construct) | |
565 | { | |
566 | if (!ossl_assert(ctx != NULL)) { | |
567 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
568 | return 0; | |
569 | } | |
570 | ctx->construct = construct; | |
571 | return 1; | |
572 | } | |
573 | ||
574 | int OSSL_DECODER_CTX_set_construct_data(OSSL_DECODER_CTX *ctx, | |
575 | void *construct_data) | |
576 | { | |
577 | if (!ossl_assert(ctx != NULL)) { | |
578 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
579 | return 0; | |
580 | } | |
581 | ctx->construct_data = construct_data; | |
582 | return 1; | |
583 | } | |
584 | ||
585 | int OSSL_DECODER_CTX_set_cleanup(OSSL_DECODER_CTX *ctx, | |
586 | OSSL_DECODER_CLEANUP *cleanup) | |
587 | { | |
588 | if (!ossl_assert(ctx != NULL)) { | |
589 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
590 | return 0; | |
591 | } | |
592 | ctx->cleanup = cleanup; | |
593 | return 1; | |
594 | } | |
595 | ||
596 | OSSL_DECODER_CONSTRUCT * | |
597 | OSSL_DECODER_CTX_get_construct(OSSL_DECODER_CTX *ctx) | |
598 | { | |
599 | if (ctx == NULL) | |
600 | return NULL; | |
601 | return ctx->construct; | |
602 | } | |
603 | ||
604 | void *OSSL_DECODER_CTX_get_construct_data(OSSL_DECODER_CTX *ctx) | |
605 | { | |
606 | if (ctx == NULL) | |
607 | return NULL; | |
608 | return ctx->construct_data; | |
609 | } | |
610 | ||
611 | OSSL_DECODER_CLEANUP * | |
612 | OSSL_DECODER_CTX_get_cleanup(OSSL_DECODER_CTX *ctx) | |
613 | { | |
614 | if (ctx == NULL) | |
615 | return NULL; | |
616 | return ctx->cleanup; | |
617 | } | |
618 | ||
619 | int OSSL_DECODER_export(OSSL_DECODER_INSTANCE *decoder_inst, | |
620 | void *reference, size_t reference_sz, | |
621 | OSSL_CALLBACK *export_cb, void *export_cbarg) | |
622 | { | |
48b62fb3 RL |
623 | OSSL_DECODER *decoder = NULL; |
624 | void *decoderctx = NULL; | |
625 | ||
ece9304c RL |
626 | if (!(ossl_assert(decoder_inst != NULL) |
627 | && ossl_assert(reference != NULL) | |
628 | && ossl_assert(export_cb != NULL) | |
629 | && ossl_assert(export_cbarg != NULL))) { | |
630 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER); | |
631 | return 0; | |
632 | } | |
633 | ||
48b62fb3 RL |
634 | decoder = OSSL_DECODER_INSTANCE_get_decoder(decoder_inst); |
635 | decoderctx = OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst); | |
636 | return decoder->export_object(decoderctx, reference, reference_sz, | |
637 | export_cb, export_cbarg); | |
ece9304c RL |
638 | } |
639 | ||
48b62fb3 RL |
640 | OSSL_DECODER * |
641 | OSSL_DECODER_INSTANCE_get_decoder(OSSL_DECODER_INSTANCE *decoder_inst) | |
ece9304c RL |
642 | { |
643 | if (decoder_inst == NULL) | |
644 | return NULL; | |
645 | return decoder_inst->decoder; | |
646 | } | |
647 | ||
48b62fb3 RL |
648 | void * |
649 | OSSL_DECODER_INSTANCE_get_decoder_ctx(OSSL_DECODER_INSTANCE *decoder_inst) | |
ece9304c RL |
650 | { |
651 | if (decoder_inst == NULL) | |
652 | return NULL; | |
bd7a6f16 | 653 | return decoder_inst->decoderctx; |
ece9304c RL |
654 | } |
655 | ||
48b62fb3 RL |
656 | const char * |
657 | OSSL_DECODER_INSTANCE_get_input_type(OSSL_DECODER_INSTANCE *decoder_inst) | |
658 | { | |
659 | if (decoder_inst == NULL) | |
660 | return NULL; | |
661 | return decoder_inst->input_type; | |
662 | } | |
663 | ||
ebfdb63d RL |
664 | const char * |
665 | OSSL_DECODER_INSTANCE_get_input_structure(OSSL_DECODER_INSTANCE *decoder_inst, | |
666 | int *was_set) | |
667 | { | |
668 | if (decoder_inst == NULL) | |
669 | return NULL; | |
670 | *was_set = decoder_inst->flag_input_structure_was_set; | |
671 | return decoder_inst->input_structure; | |
672 | } | |
673 | ||
ece9304c RL |
674 | static int decoder_process(const OSSL_PARAM params[], void *arg) |
675 | { | |
676 | struct decoder_process_data_st *data = arg; | |
677 | OSSL_DECODER_CTX *ctx = data->ctx; | |
678 | OSSL_DECODER_INSTANCE *decoder_inst = NULL; | |
679 | OSSL_DECODER *decoder = NULL; | |
141cc94e | 680 | OSSL_CORE_BIO *cbio = NULL; |
ece9304c RL |
681 | BIO *bio = data->bio; |
682 | long loc; | |
683 | size_t i; | |
f9965953 | 684 | int ok = 0; |
ece9304c RL |
685 | /* For recursions */ |
686 | struct decoder_process_data_st new_data; | |
acf497b5 RL |
687 | const char *data_type = NULL; |
688 | const char *data_structure = NULL; | |
ece9304c | 689 | |
f9965953 RL |
690 | /* |
691 | * This is an indicator up the call stack that something was indeed | |
692 | * decoded, leading to a recursive call of this function. | |
693 | */ | |
694 | data->flag_next_level_called = 1; | |
695 | ||
ece9304c RL |
696 | memset(&new_data, 0, sizeof(new_data)); |
697 | new_data.ctx = data->ctx; | |
57acc56b RL |
698 | new_data.recursion = data->recursion + 1; |
699 | ||
700 | #define LEVEL_STR ">>>>>>>>>>>>>>>>" | |
701 | #define LEVEL (new_data.recursion < sizeof(LEVEL_STR) \ | |
702 | ? &LEVEL_STR[sizeof(LEVEL_STR) - new_data.recursion - 1] \ | |
703 | : LEVEL_STR "...") | |
ece9304c RL |
704 | |
705 | if (params == NULL) { | |
706 | /* First iteration, where we prepare for what is to come */ | |
707 | ||
57acc56b RL |
708 | OSSL_TRACE_BEGIN(DECODER) { |
709 | BIO_printf(trc_out, | |
710 | "(ctx %p) starting to walk the decoder chain\n", | |
711 | (void *)new_data.ctx); | |
712 | } OSSL_TRACE_END(DECODER); | |
713 | ||
bd7a6f16 | 714 | data->current_decoder_inst_index = |
48b62fb3 | 715 | OSSL_DECODER_CTX_get_num_decoders(ctx); |
ece9304c RL |
716 | |
717 | bio = data->bio; | |
718 | } else { | |
719 | const OSSL_PARAM *p; | |
57acc56b | 720 | const char *trace_data_structure; |
ece9304c RL |
721 | |
722 | decoder_inst = | |
723 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, | |
bd7a6f16 | 724 | data->current_decoder_inst_index); |
48b62fb3 | 725 | decoder = OSSL_DECODER_INSTANCE_get_decoder(decoder_inst); |
ece9304c | 726 | |
f9965953 RL |
727 | data->flag_construct_called = 0; |
728 | if (ctx->construct != NULL) { | |
ef2194c4 RL |
729 | int rv; |
730 | ||
731 | OSSL_TRACE_BEGIN(DECODER) { | |
732 | BIO_printf(trc_out, | |
733 | "(ctx %p) %s Running constructor\n", | |
734 | (void *)new_data.ctx, LEVEL); | |
735 | } OSSL_TRACE_END(DECODER); | |
736 | ||
737 | rv = ctx->construct(decoder_inst, params, ctx->construct_data); | |
738 | ||
739 | OSSL_TRACE_BEGIN(DECODER) { | |
740 | BIO_printf(trc_out, | |
741 | "(ctx %p) %s Running constructor => %d\n", | |
742 | (void *)new_data.ctx, LEVEL, rv); | |
743 | } OSSL_TRACE_END(DECODER); | |
f9965953 RL |
744 | |
745 | data->flag_construct_called = 1; | |
746 | ok = (rv > 0); | |
747 | if (ok) | |
748 | goto end; | |
ece9304c RL |
749 | } |
750 | ||
751 | /* The constructor didn't return success */ | |
752 | ||
753 | /* | |
754 | * so we try to use the object we got and feed it to any next | |
755 | * decoder that will take it. Object references are not | |
756 | * allowed for this. | |
757 | * If this data isn't present, decoding has failed. | |
758 | */ | |
759 | ||
14c8a3d1 | 760 | p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA); |
ece9304c RL |
761 | if (p == NULL || p->data_type != OSSL_PARAM_OCTET_STRING) |
762 | goto end; | |
763 | new_data.bio = BIO_new_mem_buf(p->data, (int)p->data_size); | |
764 | if (new_data.bio == NULL) | |
765 | goto end; | |
766 | bio = new_data.bio; | |
ecadfdad | 767 | |
acf497b5 | 768 | /* Get the data type if there is one */ |
ecadfdad | 769 | p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_TYPE); |
acf497b5 | 770 | if (p != NULL && !OSSL_PARAM_get_utf8_string_ptr(p, &data_type)) |
ecadfdad | 771 | goto end; |
acf497b5 RL |
772 | |
773 | /* Get the data structure if there is one */ | |
774 | p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_STRUCTURE); | |
775 | if (p != NULL && !OSSL_PARAM_get_utf8_string_ptr(p, &data_structure)) | |
776 | goto end; | |
777 | ||
778 | /* | |
779 | * If the data structure is "type-specific" and the data type is | |
780 | * given, we drop the data structure. The reasoning is that the | |
781 | * data type is already enough to find the applicable next decoder, | |
782 | * so an additional "type-specific" data structure is extraneous. | |
783 | * | |
784 | * Furthermore, if the OSSL_DECODER caller asked for a type specific | |
785 | * structure under another name, such as "DH", we get a mismatch | |
786 | * if the data structure we just received is "type-specific". | |
787 | * There's only so much you can do without infusing this code with | |
788 | * too special knowledge. | |
789 | */ | |
57acc56b | 790 | trace_data_structure = data_structure; |
a8275fbc | 791 | if (data_type != NULL && data_structure != NULL |
acf497b5 RL |
792 | && strcasecmp(data_structure, "type-specific") == 0) |
793 | data_structure = NULL; | |
57acc56b RL |
794 | |
795 | OSSL_TRACE_BEGIN(DECODER) { | |
796 | BIO_printf(trc_out, | |
797 | "(ctx %p) %s incoming from previous decoder (%p):\n" | |
798 | " data type: %s, data structure: %s%s\n", | |
799 | (void *)new_data.ctx, LEVEL, (void *)decoder, | |
800 | data_type, trace_data_structure, | |
801 | (trace_data_structure == data_structure | |
802 | ? "" : " (dropped)")); | |
803 | } OSSL_TRACE_END(DECODER); | |
ece9304c RL |
804 | } |
805 | ||
806 | /* | |
807 | * If we have no more decoders to look through at this point, | |
808 | * we failed | |
809 | */ | |
bd7a6f16 | 810 | if (data->current_decoder_inst_index == 0) |
ece9304c RL |
811 | goto end; |
812 | ||
813 | if ((loc = BIO_tell(bio)) < 0) { | |
814 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_BIO_LIB); | |
815 | goto end; | |
816 | } | |
817 | ||
141cc94e P |
818 | if ((cbio = ossl_core_bio_new_from_bio(bio)) == NULL) { |
819 | ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE); | |
820 | goto end; | |
821 | } | |
822 | ||
bd7a6f16 RL |
823 | for (i = data->current_decoder_inst_index; i-- > 0;) { |
824 | OSSL_DECODER_INSTANCE *new_decoder_inst = | |
ece9304c | 825 | sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); |
bd7a6f16 | 826 | OSSL_DECODER *new_decoder = |
48b62fb3 RL |
827 | OSSL_DECODER_INSTANCE_get_decoder(new_decoder_inst); |
828 | void *new_decoderctx = | |
829 | OSSL_DECODER_INSTANCE_get_decoder_ctx(new_decoder_inst); | |
830 | const char *new_input_type = | |
831 | OSSL_DECODER_INSTANCE_get_input_type(new_decoder_inst); | |
acf497b5 RL |
832 | int n_i_s_was_set = 0; /* We don't care here */ |
833 | const char *new_input_structure = | |
834 | OSSL_DECODER_INSTANCE_get_input_structure(new_decoder_inst, | |
835 | &n_i_s_was_set); | |
ece9304c | 836 | |
57acc56b RL |
837 | OSSL_TRACE_BEGIN(DECODER) { |
838 | BIO_printf(trc_out, | |
ef2194c4 RL |
839 | "(ctx %p) %s [%u] Considering decoder instance %p (decoder %p):\n" |
840 | " %s with %s\n", | |
57acc56b | 841 | (void *)new_data.ctx, LEVEL, (unsigned int)i, |
ef2194c4 RL |
842 | (void *)new_decoder_inst, (void *)new_decoder, |
843 | OSSL_DECODER_get0_name(new_decoder), | |
844 | OSSL_DECODER_get0_properties(new_decoder)); | |
57acc56b RL |
845 | } OSSL_TRACE_END(DECODER); |
846 | ||
ece9304c RL |
847 | /* |
848 | * If |decoder| is NULL, it means we've just started, and the caller | |
849 | * may have specified what it expects the initial input to be. If | |
850 | * that's the case, we do this extra check. | |
851 | */ | |
852 | if (decoder == NULL && ctx->start_input_type != NULL | |
57acc56b RL |
853 | && strcasecmp(ctx->start_input_type, new_input_type) != 0) { |
854 | OSSL_TRACE_BEGIN(DECODER) { | |
855 | BIO_printf(trc_out, | |
856 | "(ctx %p) %s [%u] the start input type '%s' doesn't match the input type of the considered decoder, skipping...\n", | |
857 | (void *)new_data.ctx, LEVEL, (unsigned int)i, | |
858 | ctx->start_input_type); | |
859 | } OSSL_TRACE_END(DECODER); | |
ece9304c | 860 | continue; |
57acc56b | 861 | } |
ece9304c RL |
862 | |
863 | /* | |
864 | * If we have a previous decoder, we check that the input type | |
865 | * of the next to be used matches the type of this previous one. | |
acf497b5 RL |
866 | * |new_input_type| holds the value of the "input-type" parameter |
867 | * for the decoder we're currently considering. | |
ece9304c | 868 | */ |
57acc56b RL |
869 | if (decoder != NULL && !OSSL_DECODER_is_a(decoder, new_input_type)) { |
870 | OSSL_TRACE_BEGIN(DECODER) { | |
871 | BIO_printf(trc_out, | |
872 | "(ctx %p) %s [%u] the input type doesn't match the name of the previous decoder (%p), skipping...\n", | |
873 | (void *)new_data.ctx, LEVEL, (unsigned int)i, | |
874 | (void *)decoder); | |
875 | } OSSL_TRACE_END(DECODER); | |
ece9304c | 876 | continue; |
57acc56b | 877 | } |
ece9304c | 878 | |
ecadfdad | 879 | /* |
acf497b5 | 880 | * If the previous decoder gave us a data type, we check to see |
ecadfdad RL |
881 | * if that matches the decoder we're currently considering. |
882 | */ | |
57acc56b RL |
883 | if (data_type != NULL && !OSSL_DECODER_is_a(new_decoder, data_type)) { |
884 | OSSL_TRACE_BEGIN(DECODER) { | |
885 | BIO_printf(trc_out, | |
886 | "(ctx %p) %s [%u] the previous decoder's data type doesn't match the name of the considered decoder, skipping...\n", | |
887 | (void *)new_data.ctx, LEVEL, (unsigned int)i); | |
888 | } OSSL_TRACE_END(DECODER); | |
acf497b5 | 889 | continue; |
57acc56b | 890 | } |
acf497b5 RL |
891 | |
892 | /* | |
893 | * If the previous decoder gave us a data structure name, we check | |
894 | * to see that it matches the input data structure of the decoder | |
895 | * we're currently considering. | |
896 | */ | |
897 | if (data_structure != NULL | |
898 | && (new_input_structure == NULL | |
57acc56b RL |
899 | || strcasecmp(data_structure, new_input_structure) != 0)) { |
900 | OSSL_TRACE_BEGIN(DECODER) { | |
901 | BIO_printf(trc_out, | |
902 | "(ctx %p) %s [%u] the previous decoder's data structure doesn't match the input structure of the considered decoder, skipping...\n", | |
903 | (void *)new_data.ctx, LEVEL, (unsigned int)i); | |
904 | } OSSL_TRACE_END(DECODER); | |
ecadfdad | 905 | continue; |
57acc56b | 906 | } |
ecadfdad | 907 | |
73dd5d67 RL |
908 | /* |
909 | * If the decoder we're currently considering specifies a structure, | |
910 | * and this check hasn't already been done earlier in this chain of | |
911 | * decoder_process() calls, check that it matches the user provided | |
912 | * input structure, if one is given. | |
913 | */ | |
914 | if (!data->flag_input_structure_checked | |
915 | && ctx->input_structure != NULL | |
916 | && new_input_structure != NULL) { | |
917 | data->flag_input_structure_checked = 1; | |
918 | if (strcasecmp(new_input_structure, ctx->input_structure) != 0) { | |
919 | OSSL_TRACE_BEGIN(DECODER) { | |
920 | BIO_printf(trc_out, | |
921 | "(ctx %p) %s [%u] the previous decoder's data structure doesn't match the input structure given by the user, skipping...\n", | |
922 | (void *)new_data.ctx, LEVEL, (unsigned int)i); | |
923 | } OSSL_TRACE_END(DECODER); | |
924 | continue; | |
925 | } | |
926 | } | |
927 | ||
ece9304c RL |
928 | /* |
929 | * Checking the return value of BIO_reset() or BIO_seek() is unsafe. | |
930 | * Furthermore, BIO_reset() is unsafe to use if the source BIO happens | |
931 | * to be a BIO_s_mem(), because the earlier BIO_tell() gives us zero | |
932 | * no matter where we are in the underlying buffer we're reading from. | |
933 | * | |
934 | * So, we simply do a BIO_seek(), and use BIO_tell() that we're back | |
935 | * at the same position. This is a best effort attempt, but BIO_seek() | |
936 | * and BIO_tell() should come as a pair... | |
937 | */ | |
938 | (void)BIO_seek(bio, loc); | |
939 | if (BIO_tell(bio) != loc) | |
940 | goto end; | |
941 | ||
942 | /* Recurse */ | |
57acc56b RL |
943 | OSSL_TRACE_BEGIN(DECODER) { |
944 | BIO_printf(trc_out, | |
945 | "(ctx %p) %s [%u] Running decoder instance %p\n", | |
946 | (void *)new_data.ctx, LEVEL, (unsigned int)i, | |
947 | (void *)new_decoder_inst); | |
948 | } OSSL_TRACE_END(DECODER); | |
949 | ||
f9965953 RL |
950 | /* |
951 | * We only care about errors reported from decoder implementations | |
952 | * if it returns false (i.e. there was a fatal error). | |
953 | */ | |
954 | ERR_set_mark(); | |
955 | ||
bd7a6f16 | 956 | new_data.current_decoder_inst_index = i; |
73dd5d67 RL |
957 | new_data.flag_input_structure_checked |
958 | = data->flag_input_structure_checked; | |
141cc94e | 959 | ok = new_decoder->decode(new_decoderctx, cbio, |
ebfdb63d | 960 | new_data.ctx->selection, |
bd7a6f16 RL |
961 | decoder_process, &new_data, |
962 | ossl_pw_passphrase_callback_dec, | |
963 | &new_data.ctx->pwdata); | |
de5008a4 RL |
964 | |
965 | OSSL_TRACE_BEGIN(DECODER) { | |
966 | BIO_printf(trc_out, | |
f9965953 RL |
967 | "(ctx %p) %s [%u] Running decoder instance %p => %d" |
968 | " (recursed further: %s, construct called: %s)\n", | |
57acc56b | 969 | (void *)new_data.ctx, LEVEL, (unsigned int)i, |
f9965953 RL |
970 | (void *)new_decoder_inst, ok, |
971 | new_data.flag_next_level_called ? "yes" : "no", | |
972 | new_data.flag_construct_called ? "yes" : "no"); | |
de5008a4 RL |
973 | } OSSL_TRACE_END(DECODER); |
974 | ||
f9965953 RL |
975 | data->flag_construct_called = new_data.flag_construct_called; |
976 | ||
977 | /* Break on error or if we tried to construct an object already */ | |
978 | if (!ok || data->flag_construct_called) { | |
979 | ERR_clear_last_mark(); | |
ece9304c | 980 | break; |
f9965953 RL |
981 | } |
982 | ERR_pop_to_mark(); | |
acf497b5 RL |
983 | |
984 | /* | |
f9965953 RL |
985 | * Break if the decoder implementation that we called recursed, since |
986 | * that indicates that it successfully decoded something. | |
acf497b5 | 987 | */ |
f9965953 RL |
988 | if (new_data.flag_next_level_called) |
989 | break; | |
ece9304c RL |
990 | } |
991 | ||
992 | end: | |
141cc94e | 993 | ossl_core_bio_free(cbio); |
ece9304c RL |
994 | BIO_free(new_data.bio); |
995 | return ok; | |
996 | } |