Bug Summary

File:out/../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c
Warning:line 791, column 9
Value stored to 'trace_data_structure' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name decoder_lib.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/home/maurizio/node-v18.6.0/out -resource-dir /usr/local/lib/clang/16.0.0 -D V8_DEPRECATION_WARNINGS -D V8_IMMINENT_DEPRECATION_WARNINGS -D _GLIBCXX_USE_CXX11_ABI=1 -D NODE_OPENSSL_CONF_NAME=nodejs_conf -D NODE_OPENSSL_HAS_QUIC -D __STDC_FORMAT_MACROS -D OPENSSL_NO_PINSHARED -D OPENSSL_THREADS -D OPENSSL_NO_HW -D OPENSSL_API_COMPAT=0x10100001L -D STATIC_LEGACY -D NDEBUG -D OPENSSL_USE_NODELETE -D L_ENDIAN -D OPENSSL_BUILDING_OPENSSL -D AES_ASM -D BSAES_ASM -D CMLL_ASM -D ECP_NISTZ256_ASM -D GHASH_ASM -D KECCAK1600_ASM -D MD5_ASM -D OPENSSL_BN_ASM_GF2m -D OPENSSL_BN_ASM_MONT -D OPENSSL_BN_ASM_MONT5 -D OPENSSL_CPUID_OBJ -D OPENSSL_IA32_SSE2 -D PADLOCK_ASM -D POLY1305_ASM -D SHA1_ASM -D SHA256_ASM -D SHA512_ASM -D VPAES_ASM -D WHIRLPOOL_ASM -D X25519_ASM -D OPENSSL_PIC -D MODULESDIR="/home/maurizio/node-v18.6.0/out/Release/obj.target/deps/openssl/lib/openssl-modules" -D OPENSSLDIR="/home/maurizio/node-v18.6.0/out/Release/obj.target/deps/openssl" -D OPENSSLDIR="/etc/ssl" -D ENGINESDIR="/dev/null" -D TERMIOS -I ../deps/openssl/openssl -I ../deps/openssl/openssl/include -I ../deps/openssl/openssl/crypto -I ../deps/openssl/openssl/crypto/include -I ../deps/openssl/openssl/crypto/modes -I ../deps/openssl/openssl/crypto/ec/curve448 -I ../deps/openssl/openssl/crypto/ec/curve448/arch_32 -I ../deps/openssl/openssl/providers/common/include -I ../deps/openssl/openssl/providers/implementations/include -I ../deps/openssl/config -I ../deps/openssl/config/archs/linux-x86_64/asm -I ../deps/openssl/config/archs/linux-x86_64/asm/include -I ../deps/openssl/config/archs/linux-x86_64/asm/crypto -I ../deps/openssl/config/archs/linux-x86_64/asm/crypto/include/internal -I ../deps/openssl/config/archs/linux-x86_64/asm/providers/common/include -internal-isystem /usr/local/lib/clang/16.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-redhat-linux/8/../../../../x86_64-redhat-linux/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Wno-unused-parameter -Wno-missing-field-initializers -Wno-old-style-declaration -fdebug-compilation-dir=/home/maurizio/node-v18.6.0/out -ferror-limit 19 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-08-22-142216-507842-1 -x c ../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c
1/*
2 * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
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>
14#include <openssl/evperr.h>
15#include <openssl/ecerr.h>
16#include <openssl/pkcs12err.h>
17#include <openssl/x509err.h>
18#include <openssl/trace.h>
19#include "internal/bio.h"
20#include "internal/provider.h"
21#include "crypto/decoder.h"
22#include "encoder_local.h"
23#include "e_os.h"
24
25struct 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 */
32 size_t current_decoder_inst_index;
33 /* For tracing, count recursion level */
34 size_t recursion;
35
36 /*-
37 * Flags
38 */
39 unsigned int flag_next_level_called : 1;
40 unsigned int flag_construct_called : 1;
41 unsigned int flag_input_structure_checked : 1;
42};
43
44static int decoder_process(const OSSL_PARAM params[], void *arg);
45
46int OSSL_DECODER_from_bio(OSSL_DECODER_CTX *ctx, BIO *in)
47{
48 struct decoder_process_data_st data;
49 int ok = 0;
50 BIO *new_bio = NULL((void*)0);
51 unsigned long lasterr;
52
53 if (in == NULL((void*)0)) {
54 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,54,__func__), ERR_set_error)((60),((258|((0x1 << 18L)|
(0x2 << 18L)))),((void*)0));
55 return 0;
56 }
57
58 if (OSSL_DECODER_CTX_get_num_decoders(ctx) == 0) {
59 ERR_raise_data(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,59,__func__), ERR_set_error)(ERR_LIB_OSSL_DECODER60, OSSL_DECODER_R_DECODER_NOT_FOUND102,
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
66 lasterr = ERR_peek_last_error();
67
68 if (BIO_tell(in)(int)BIO_ctrl(in,133,0,((void*)0)) < 0) {
69 new_bio = BIO_new(BIO_f_readbuffer());
70 if (new_bio == NULL((void*)0))
71 return 0;
72 in = BIO_push(new_bio, in);
73 }
74 memset(&data, 0, sizeof(data));
75 data.ctx = ctx;
76 data.bio = in;
77
78 /* Enable passphrase caching */
79 (void)ossl_pw_enable_passphrase_caching(&ctx->pwdata);
80
81 ok = decoder_process(NULL((void*)0), &data);
82
83 if (!data.flag_construct_called) {
84 const char *spaces
85 = ctx->start_input_type != NULL((void*)0) && ctx->input_structure != NULL((void*)0)
86 ? " " : "";
87 const char *input_type_label
88 = ctx->start_input_type != NULL((void*)0) ? "Input type: " : "";
89 const char *input_structure_label
90 = ctx->input_structure != NULL((void*)0) ? "Input structure: " : "";
91 const char *comma
92 = ctx->start_input_type != NULL((void*)0) && ctx->input_structure != NULL((void*)0)
93 ? ", " : "";
94 const char *input_type
95 = ctx->start_input_type != NULL((void*)0) ? ctx->start_input_type : "";
96 const char *input_structure
97 = ctx->input_structure != NULL((void*)0) ? ctx->input_structure : "";
98
99 if (ERR_peek_last_error() == lasterr || ERR_peek_error() == 0)
100 /* Prevent spurious decoding error but add at least something */
101 ERR_raise_data(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,101,__func__), ERR_set_error)(ERR_LIB_OSSL_DECODER60, ERR_R_UNSUPPORTED(268|(0x2 << 18L)),
102 "No supported data to decode. %s%s%s%s%s%s",
103 spaces, input_type_label, input_type, comma,
104 input_structure_label, input_structure);
105 ok = 0;
106 }
107
108 /* Clear any internally cached passphrase */
109 (void)ossl_pw_clear_passphrase_cache(&ctx->pwdata);
110
111 if (new_bio != NULL((void*)0)) {
112 BIO_pop(new_bio);
113 BIO_free(new_bio);
114 }
115 return ok;
116}
117
118#ifndef OPENSSL_NO_STDIO
119static BIO *bio_from_file(FILE *fp)
120{
121 BIO *b;
122
123 if ((b = BIO_new(BIO_s_file())) == NULL((void*)0)) {
124 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_BIO_LIB)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,124,__func__), ERR_set_error)((60),((32 | (0x2 << 18L)
)),((void*)0));
125 return NULL((void*)0);
126 }
127 BIO_set_fp(b, fp, BIO_NOCLOSE)BIO_ctrl(b,106,0x00,(char *)(fp));
128 return b;
129}
130
131int 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((void*)0))
137 ret = OSSL_DECODER_from_bio(ctx, b);
138
139 BIO_free(b);
140 return ret;
141}
142#endif
143
144int 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((void*)0) || *pdata == NULL((void*)0) || pdata_len == NULL((void*)0)) {
151 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,151,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
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)BIO_ctrl(membio,3,0,(char *)(pdata));
158 ret = 1;
159 }
160 BIO_free(membio);
161
162 return ret;
163}
164
165int OSSL_DECODER_CTX_set_selection(OSSL_DECODER_CTX *ctx, int selection)
166{
167 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
168 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,168,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
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
180int OSSL_DECODER_CTX_set_input_type(OSSL_DECODER_CTX *ctx,
181 const char *input_type)
182{
183 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
184 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,184,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
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
196int OSSL_DECODER_CTX_set_input_structure(OSSL_DECODER_CTX *ctx,
197 const char *input_structure)
198{
199 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
200 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,200,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
201 return 0;
202 }
203
204 /*
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.
207 */
208 ctx->input_structure = input_structure;
209 return 1;
210}
211
212OSSL_DECODER_INSTANCE *ossl_decoder_instance_new(OSSL_DECODER *decoder,
213 void *decoderctx)
214{
215 OSSL_DECODER_INSTANCE *decoder_inst = NULL((void*)0);
216 const OSSL_PROVIDER *prov;
217 OSSL_LIB_CTX *libctx;
218 const OSSL_PROPERTY_LIST *props;
219 const OSSL_PROPERTY_DEFINITION *prop;
220
221 if (!ossl_assert(decoder != NULL)((decoder != ((void*)0)) != 0)) {
222 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,222,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
223 return 0;
224 }
225
226 if ((decoder_inst = OPENSSL_zalloc(sizeof(*decoder_inst))CRYPTO_zalloc(sizeof(*decoder_inst), "../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
, 226)) == NULL((void*)0)) {
227 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,227,__func__), ERR_set_error)((60),((256|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
228 return 0;
229 }
230
231 prov = OSSL_DECODER_get0_provider(decoder);
232 libctx = ossl_provider_libctx(prov);
233 props = ossl_decoder_parsed_properties(decoder);
234 if (props == NULL((void*)0)) {
235 ERR_raise_data(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,235,__func__), ERR_set_error)(ERR_LIB_OSSL_DECODER60, ERR_R_INVALID_PROPERTY_DEFINITION(270|(0x2 << 18L)),
236 "there are no property definitions with decoder %s",
237 OSSL_DECODER_get0_name(decoder));
238 goto err;
239 }
240
241 /* The "input" property is mandatory */
242 prop = ossl_property_find_property(props, libctx, "input");
243 decoder_inst->input_type = ossl_property_get_string_value(libctx, prop);
244 if (decoder_inst->input_type == NULL((void*)0)) {
245 ERR_raise_data(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,245,__func__), ERR_set_error)(ERR_LIB_OSSL_DECODER60, ERR_R_INVALID_PROPERTY_DEFINITION(270|(0x2 << 18L)),
246 "the mandatory 'input' property is missing "
247 "for decoder %s (properties: %s)",
248 OSSL_DECODER_get0_name(decoder),
249 OSSL_DECODER_get0_properties(decoder));
250 goto err;
251 }
252
253 /* The "structure" property is optional */
254 prop = ossl_property_find_property(props, libctx, "structure");
255 if (prop != NULL((void*)0)) {
256 decoder_inst->input_structure
257 = ossl_property_get_string_value(libctx, prop);
258 }
259
260 if (!OSSL_DECODER_up_ref(decoder)) {
261 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_INTERNAL_ERROR)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,261,__func__), ERR_set_error)((60),((259|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
262 goto err;
263 }
264 decoder_inst->decoder = decoder;
265 decoder_inst->decoderctx = decoderctx;
266 return decoder_inst;
267 err:
268 ossl_decoder_instance_free(decoder_inst);
269 return NULL((void*)0);
270}
271
272void ossl_decoder_instance_free(OSSL_DECODER_INSTANCE *decoder_inst)
273{
274 if (decoder_inst != NULL((void*)0)) {
275 if (decoder_inst->decoder != NULL((void*)0))
276 decoder_inst->decoder->freectx(decoder_inst->decoderctx);
277 decoder_inst->decoderctx = NULL((void*)0);
278 OSSL_DECODER_free(decoder_inst->decoder);
279 decoder_inst->decoder = NULL((void*)0);
280 OPENSSL_free(decoder_inst)CRYPTO_free(decoder_inst, "../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
, 280);
281 }
282}
283
284int ossl_decoder_ctx_add_decoder_inst(OSSL_DECODER_CTX *ctx,
285 OSSL_DECODER_INSTANCE *di)
286{
287 int ok;
288
289 if (ctx->decoder_insts == NULL((void*)0)
290 && (ctx->decoder_insts =
291 sk_OSSL_DECODER_INSTANCE_new_null()) == NULL((void*)0)) {
292 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,292,__func__), ERR_set_error)((60),((256|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
293 return 0;
294 }
295
296 ok = (sk_OSSL_DECODER_INSTANCE_push(ctx->decoder_insts, di) > 0);
297 if (ok) {
298 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
299 BIO_printf(trc_out,
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));
305 } OSSL_TRACE_END(DECODER)} while(0);
306 }
307 return ok;
308}
309
310int OSSL_DECODER_CTX_add_decoder(OSSL_DECODER_CTX *ctx, OSSL_DECODER *decoder)
311{
312 OSSL_DECODER_INSTANCE *decoder_inst = NULL((void*)0);
313 const OSSL_PROVIDER *prov = NULL((void*)0);
314 void *decoderctx = NULL((void*)0);
315 void *provctx = NULL((void*)0);
316
317 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0) || !ossl_assert(decoder != NULL)((decoder != ((void*)0)) != 0)) {
318 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,318,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
319 return 0;
320 }
321
322 prov = OSSL_DECODER_get0_provider(decoder);
323 provctx = OSSL_PROVIDER_get0_provider_ctx(prov);
324
325 if ((decoderctx = decoder->newctx(provctx)) == NULL((void*)0)
326 || (decoder_inst =
327 ossl_decoder_instance_new(decoder, decoderctx)) == NULL((void*)0))
328 goto err;
329 /* Avoid double free of decoderctx on further errors */
330 decoderctx = NULL((void*)0);
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((void*)0))
339 decoder->freectx(decoderctx);
340 return 0;
341}
342
343struct 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
355DEFINE_STACK_OF(OSSL_DECODER)struct stack_st_OSSL_DECODER; typedef int (*sk_OSSL_DECODER_compfunc
)(const OSSL_DECODER * const *a, const OSSL_DECODER *const *b
); typedef void (*sk_OSSL_DECODER_freefunc)(OSSL_DECODER *a);
typedef OSSL_DECODER * (*sk_OSSL_DECODER_copyfunc)(const OSSL_DECODER
*a); static __attribute__((unused)) inline int sk_OSSL_DECODER_num
(const struct stack_st_OSSL_DECODER *sk) { return OPENSSL_sk_num
((const OPENSSL_STACK *)sk); } static __attribute__((unused))
inline OSSL_DECODER *sk_OSSL_DECODER_value(const struct stack_st_OSSL_DECODER
*sk, int idx) { return (OSSL_DECODER *)OPENSSL_sk_value((const
OPENSSL_STACK *)sk, idx); } static __attribute__((unused)) inline
struct stack_st_OSSL_DECODER *sk_OSSL_DECODER_new(sk_OSSL_DECODER_compfunc
compare) { return (struct stack_st_OSSL_DECODER *)OPENSSL_sk_new
((OPENSSL_sk_compfunc)compare); } static __attribute__((unused
)) inline struct stack_st_OSSL_DECODER *sk_OSSL_DECODER_new_null
(void) { return (struct stack_st_OSSL_DECODER *)OPENSSL_sk_new_null
(); } static __attribute__((unused)) inline struct stack_st_OSSL_DECODER
*sk_OSSL_DECODER_new_reserve(sk_OSSL_DECODER_compfunc compare
, int n) { return (struct stack_st_OSSL_DECODER *)OPENSSL_sk_new_reserve
((OPENSSL_sk_compfunc)compare, n); } static __attribute__((unused
)) inline int sk_OSSL_DECODER_reserve(struct stack_st_OSSL_DECODER
*sk, int n) { return OPENSSL_sk_reserve((OPENSSL_STACK *)sk,
n); } static __attribute__((unused)) inline void sk_OSSL_DECODER_free
(struct stack_st_OSSL_DECODER *sk) { OPENSSL_sk_free((OPENSSL_STACK
*)sk); } static __attribute__((unused)) inline void sk_OSSL_DECODER_zero
(struct stack_st_OSSL_DECODER *sk) { OPENSSL_sk_zero((OPENSSL_STACK
*)sk); } static __attribute__((unused)) inline OSSL_DECODER *
sk_OSSL_DECODER_delete(struct stack_st_OSSL_DECODER *sk, int i
) { return (OSSL_DECODER *)OPENSSL_sk_delete((OPENSSL_STACK *
)sk, i); } static __attribute__((unused)) inline OSSL_DECODER
*sk_OSSL_DECODER_delete_ptr(struct stack_st_OSSL_DECODER *sk
, OSSL_DECODER *ptr) { return (OSSL_DECODER *)OPENSSL_sk_delete_ptr
((OPENSSL_STACK *)sk, (const void *)ptr); } static __attribute__
((unused)) inline int sk_OSSL_DECODER_push(struct stack_st_OSSL_DECODER
*sk, OSSL_DECODER *ptr) { return OPENSSL_sk_push((OPENSSL_STACK
*)sk, (const void *)ptr); } static __attribute__((unused)) inline
int sk_OSSL_DECODER_unshift(struct stack_st_OSSL_DECODER *sk
, OSSL_DECODER *ptr) { return OPENSSL_sk_unshift((OPENSSL_STACK
*)sk, (const void *)ptr); } static __attribute__((unused)) inline
OSSL_DECODER *sk_OSSL_DECODER_pop(struct stack_st_OSSL_DECODER
*sk) { return (OSSL_DECODER *)OPENSSL_sk_pop((OPENSSL_STACK *
)sk); } static __attribute__((unused)) inline OSSL_DECODER *sk_OSSL_DECODER_shift
(struct stack_st_OSSL_DECODER *sk) { return (OSSL_DECODER *)OPENSSL_sk_shift
((OPENSSL_STACK *)sk); } static __attribute__((unused)) inline
void sk_OSSL_DECODER_pop_free(struct stack_st_OSSL_DECODER *
sk, sk_OSSL_DECODER_freefunc freefunc) { OPENSSL_sk_pop_free(
(OPENSSL_STACK *)sk, (OPENSSL_sk_freefunc)freefunc); } static
__attribute__((unused)) inline int sk_OSSL_DECODER_insert(struct
stack_st_OSSL_DECODER *sk, OSSL_DECODER *ptr, int idx) { return
OPENSSL_sk_insert((OPENSSL_STACK *)sk, (const void *)ptr, idx
); } static __attribute__((unused)) inline OSSL_DECODER *sk_OSSL_DECODER_set
(struct stack_st_OSSL_DECODER *sk, int idx, OSSL_DECODER *ptr
) { return (OSSL_DECODER *)OPENSSL_sk_set((OPENSSL_STACK *)sk
, idx, (const void *)ptr); } static __attribute__((unused)) inline
int sk_OSSL_DECODER_find(struct stack_st_OSSL_DECODER *sk, OSSL_DECODER
*ptr) { return OPENSSL_sk_find((OPENSSL_STACK *)sk, (const void
*)ptr); } static __attribute__((unused)) inline int sk_OSSL_DECODER_find_ex
(struct stack_st_OSSL_DECODER *sk, OSSL_DECODER *ptr) { return
OPENSSL_sk_find_ex((OPENSSL_STACK *)sk, (const void *)ptr); }
static __attribute__((unused)) inline int sk_OSSL_DECODER_find_all
(struct stack_st_OSSL_DECODER *sk, OSSL_DECODER *ptr, int *pnum
) { return OPENSSL_sk_find_all((OPENSSL_STACK *)sk, (const void
*)ptr, pnum); } static __attribute__((unused)) inline void sk_OSSL_DECODER_sort
(struct stack_st_OSSL_DECODER *sk) { OPENSSL_sk_sort((OPENSSL_STACK
*)sk); } static __attribute__((unused)) inline int sk_OSSL_DECODER_is_sorted
(const struct stack_st_OSSL_DECODER *sk) { return OPENSSL_sk_is_sorted
((const OPENSSL_STACK *)sk); } static __attribute__((unused))
inline struct stack_st_OSSL_DECODER * sk_OSSL_DECODER_dup(const
struct stack_st_OSSL_DECODER *sk) { return (struct stack_st_OSSL_DECODER
*)OPENSSL_sk_dup((const OPENSSL_STACK *)sk); } static __attribute__
((unused)) inline struct stack_st_OSSL_DECODER *sk_OSSL_DECODER_deep_copy
(const struct stack_st_OSSL_DECODER *sk, sk_OSSL_DECODER_copyfunc
copyfunc, sk_OSSL_DECODER_freefunc freefunc) { return (struct
stack_st_OSSL_DECODER *)OPENSSL_sk_deep_copy((const OPENSSL_STACK
*)sk, (OPENSSL_sk_copyfunc)copyfunc, (OPENSSL_sk_freefunc)freefunc
); } static __attribute__((unused)) inline sk_OSSL_DECODER_compfunc
sk_OSSL_DECODER_set_cmp_func(struct stack_st_OSSL_DECODER *sk
, sk_OSSL_DECODER_compfunc compare) { return (sk_OSSL_DECODER_compfunc
)OPENSSL_sk_set_cmp_func((OPENSSL_STACK *)sk, (OPENSSL_sk_compfunc
)compare); }
356
357static void collect_all_decoders(OSSL_DECODER *decoder, void *arg)
358{
359 STACK_OF(OSSL_DECODER)struct stack_st_OSSL_DECODER *skdecoders = arg;
360
361 if (OSSL_DECODER_up_ref(decoder)
362 && !sk_OSSL_DECODER_push(skdecoders, decoder))
363 OSSL_DECODER_free(decoder);
364}
365
366static void collect_extra_decoder(OSSL_DECODER *decoder, void *arg)
367{
368 struct collect_extra_decoder_data_st *data = arg;
369 size_t j;
370 const OSSL_PROVIDER *prov = OSSL_DECODER_get0_provider(decoder);
371 void *provctx = OSSL_PROVIDER_get0_provider_ctx(prov);
372
373 if (OSSL_DECODER_is_a(decoder, data->output_type)) {
374 void *decoderctx = NULL((void*)0);
375 OSSL_DECODER_INSTANCE *di = NULL((void*)0);
376
377 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
378 BIO_printf(trc_out,
379 "(ctx %p) [%d] Checking out decoder %p:\n"
380 " %s with %s\n",
381 (void *)data->ctx, data->type_check, (void *)decoder,
382 OSSL_DECODER_get0_name(decoder),
383 OSSL_DECODER_get0_properties(decoder));
384 } OSSL_TRACE_END(DECODER)} while(0);
385
386 /*
387 * Check that we don't already have this decoder in our stack,
388 * starting with the previous windows but also looking at what
389 * we have added in the current window.
390 */
391 for (j = data->w_prev_start; j < data->w_new_end; j++) {
392 OSSL_DECODER_INSTANCE *check_inst =
393 sk_OSSL_DECODER_INSTANCE_value(data->ctx->decoder_insts, j);
394
395 if (decoder->base.algodef == check_inst->decoder->base.algodef) {
396 /* We found it, so don't do anything more */
397 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
398 BIO_printf(trc_out,
399 " REJECTED: already exists in the chain\n");
400 } OSSL_TRACE_END(DECODER)} while(0);
401 return;
402 }
403 }
404
405 if ((decoderctx = decoder->newctx(provctx)) == NULL((void*)0))
406 return;
407
408 if ((di = ossl_decoder_instance_new(decoder, decoderctx)) == NULL((void*)0)) {
409 decoder->freectx(decoderctx);
410 return;
411 }
412
413 switch (data->type_check) {
414 case IS_SAME:
415 /* If it differs, this is not a decoder to add for now. */
416 if (!OSSL_DECODER_is_a(decoder,
417 OSSL_DECODER_INSTANCE_get_input_type(di))) {
418 ossl_decoder_instance_free(di);
419 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
420 BIO_printf(trc_out,
421 " REJECTED: input type doesn't match output type\n");
422 } OSSL_TRACE_END(DECODER)} while(0);
423 return;
424 }
425 break;
426 case IS_DIFFERENT:
427 /* If it's the same, this is not a decoder to add for now. */
428 if (OSSL_DECODER_is_a(decoder,
429 OSSL_DECODER_INSTANCE_get_input_type(di))) {
430 ossl_decoder_instance_free(di);
431 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
432 BIO_printf(trc_out,
433 " REJECTED: input type matches output type\n");
434 } OSSL_TRACE_END(DECODER)} while(0);
435 return;
436 }
437 break;
438 }
439
440 /*
441 * Apart from keeping w_new_end up to date, We don't care about
442 * errors here. If it doesn't collect, then it doesn't...
443 */
444 if (!ossl_decoder_ctx_add_decoder_inst(data->ctx, di)) {
445 ossl_decoder_instance_free(di);
446 return;
447 }
448
449 data->w_new_end++;
450 }
451}
452
453int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx,
454 OSSL_LIB_CTX *libctx, const char *propq)
455{
456 /*
457 * This function goes through existing decoder methods in
458 * |ctx->decoder_insts|, and tries to fetch new decoders that produce
459 * what the existing ones want as input, and push those newly fetched
460 * decoders on top of the same stack.
461 * Then it does the same again, but looping over the newly fetched
462 * decoders, until there are no more decoders to be fetched, or
463 * when we have done this 10 times.
464 *
465 * we do this with sliding windows on the stack by keeping track of indexes
466 * and of the end.
467 *
468 * +----------------+
469 * | DER to RSA | <--- w_prev_start
470 * +----------------+
471 * | DER to DSA |
472 * +----------------+
473 * | DER to DH |
474 * +----------------+
475 * | PEM to DER | <--- w_prev_end, w_new_start
476 * +----------------+
477 * <--- w_new_end
478 */
479 struct collect_extra_decoder_data_st data;
480 size_t depth = 0; /* Counts the number of iterations */
481 size_t count; /* Calculates how many were added in each iteration */
482 size_t numdecoders;
483 STACK_OF(OSSL_DECODER)struct stack_st_OSSL_DECODER *skdecoders;
484
485 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
486 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,486,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
487 return 0;
488 }
489
490 /*
491 * If there is no stack of OSSL_DECODER_INSTANCE, we have nothing
492 * more to add. That's fine.
493 */
494 if (ctx->decoder_insts == NULL((void*)0))
495 return 1;
496
497 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
498 BIO_printf(trc_out, "(ctx %p) Looking for extra decoders\n",
499 (void *)ctx);
500 } OSSL_TRACE_END(DECODER)} while(0);
501
502
503 skdecoders = sk_OSSL_DECODER_new_null();
504 if (skdecoders == NULL((void*)0)) {
505 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,505,__func__), ERR_set_error)((60),((256|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
506 return 0;
507 }
508 OSSL_DECODER_do_all_provided(libctx, collect_all_decoders, skdecoders);
509 numdecoders = sk_OSSL_DECODER_num(skdecoders);
510
511 memset(&data, 0, sizeof(data));
512 data.ctx = ctx;
513 data.w_prev_start = 0;
514 data.w_prev_end = sk_OSSL_DECODER_INSTANCE_num(ctx->decoder_insts);
515 do {
516 size_t i, j;
517
518 data.w_new_start = data.w_new_end = data.w_prev_end;
519
520 /*
521 * Two iterations:
522 * 0. All decoders that have the same name as their input type.
523 * This allows for decoders that unwrap some data in a specific
524 * encoding, and pass the result on with the same encoding.
525 * 1. All decoders that a different name than their input type.
526 */
527 for (data.type_check = IS_SAME;
528 data.type_check <= IS_DIFFERENT;
529 data.type_check++) {
530 for (i = data.w_prev_start; i < data.w_prev_end; i++) {
531 OSSL_DECODER_INSTANCE *decoder_inst =
532 sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i);
533
534 data.output_type
535 = OSSL_DECODER_INSTANCE_get_input_type(decoder_inst);
536
537
538 for (j = 0; j < numdecoders; j++)
539 collect_extra_decoder(sk_OSSL_DECODER_value(skdecoders, j),
540 &data);
541 }
542 }
543 /* How many were added in this iteration */
544 count = data.w_new_end - data.w_new_start;
545
546 /* Slide the "previous decoder" windows */
547 data.w_prev_start = data.w_new_start;
548 data.w_prev_end = data.w_new_end;
549
550 depth++;
551 } while (count != 0 && depth <= 10);
552
553 sk_OSSL_DECODER_pop_free(skdecoders, OSSL_DECODER_free);
554 return 1;
555}
556
557int OSSL_DECODER_CTX_get_num_decoders(OSSL_DECODER_CTX *ctx)
558{
559 if (ctx == NULL((void*)0) || ctx->decoder_insts == NULL((void*)0))
560 return 0;
561 return sk_OSSL_DECODER_INSTANCE_num(ctx->decoder_insts);
562}
563
564int OSSL_DECODER_CTX_set_construct(OSSL_DECODER_CTX *ctx,
565 OSSL_DECODER_CONSTRUCT *construct)
566{
567 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
568 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,568,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
569 return 0;
570 }
571 ctx->construct = construct;
572 return 1;
573}
574
575int OSSL_DECODER_CTX_set_construct_data(OSSL_DECODER_CTX *ctx,
576 void *construct_data)
577{
578 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
579 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,579,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
580 return 0;
581 }
582 ctx->construct_data = construct_data;
583 return 1;
584}
585
586int OSSL_DECODER_CTX_set_cleanup(OSSL_DECODER_CTX *ctx,
587 OSSL_DECODER_CLEANUP *cleanup)
588{
589 if (!ossl_assert(ctx != NULL)((ctx != ((void*)0)) != 0)) {
590 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,590,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
591 return 0;
592 }
593 ctx->cleanup = cleanup;
594 return 1;
595}
596
597OSSL_DECODER_CONSTRUCT *
598OSSL_DECODER_CTX_get_construct(OSSL_DECODER_CTX *ctx)
599{
600 if (ctx == NULL((void*)0))
601 return NULL((void*)0);
602 return ctx->construct;
603}
604
605void *OSSL_DECODER_CTX_get_construct_data(OSSL_DECODER_CTX *ctx)
606{
607 if (ctx == NULL((void*)0))
608 return NULL((void*)0);
609 return ctx->construct_data;
610}
611
612OSSL_DECODER_CLEANUP *
613OSSL_DECODER_CTX_get_cleanup(OSSL_DECODER_CTX *ctx)
614{
615 if (ctx == NULL((void*)0))
616 return NULL((void*)0);
617 return ctx->cleanup;
618}
619
620int OSSL_DECODER_export(OSSL_DECODER_INSTANCE *decoder_inst,
621 void *reference, size_t reference_sz,
622 OSSL_CALLBACK *export_cb, void *export_cbarg)
623{
624 OSSL_DECODER *decoder = NULL((void*)0);
625 void *decoderctx = NULL((void*)0);
626
627 if (!(ossl_assert(decoder_inst != NULL)((decoder_inst != ((void*)0)) != 0)
628 && ossl_assert(reference != NULL)((reference != ((void*)0)) != 0)
629 && ossl_assert(export_cb != NULL)((export_cb != ((void*)0)) != 0)
630 && ossl_assert(export_cbarg != NULL)((export_cbarg != ((void*)0)) != 0))) {
631 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_PASSED_NULL_PARAMETER)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,631,__func__), ERR_set_error)((60),((258|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
632 return 0;
633 }
634
635 decoder = OSSL_DECODER_INSTANCE_get_decoder(decoder_inst);
636 decoderctx = OSSL_DECODER_INSTANCE_get_decoder_ctx(decoder_inst);
637 return decoder->export_object(decoderctx, reference, reference_sz,
638 export_cb, export_cbarg);
639}
640
641OSSL_DECODER *
642OSSL_DECODER_INSTANCE_get_decoder(OSSL_DECODER_INSTANCE *decoder_inst)
643{
644 if (decoder_inst == NULL((void*)0))
645 return NULL((void*)0);
646 return decoder_inst->decoder;
647}
648
649void *
650OSSL_DECODER_INSTANCE_get_decoder_ctx(OSSL_DECODER_INSTANCE *decoder_inst)
651{
652 if (decoder_inst == NULL((void*)0))
653 return NULL((void*)0);
654 return decoder_inst->decoderctx;
655}
656
657const char *
658OSSL_DECODER_INSTANCE_get_input_type(OSSL_DECODER_INSTANCE *decoder_inst)
659{
660 if (decoder_inst == NULL((void*)0))
661 return NULL((void*)0);
662 return decoder_inst->input_type;
663}
664
665const char *
666OSSL_DECODER_INSTANCE_get_input_structure(OSSL_DECODER_INSTANCE *decoder_inst,
667 int *was_set)
668{
669 if (decoder_inst == NULL((void*)0))
670 return NULL((void*)0);
671 *was_set = decoder_inst->flag_input_structure_was_set;
672 return decoder_inst->input_structure;
673}
674
675static int decoder_process(const OSSL_PARAM params[], void *arg)
676{
677 struct decoder_process_data_st *data = arg;
678 OSSL_DECODER_CTX *ctx = data->ctx;
679 OSSL_DECODER_INSTANCE *decoder_inst = NULL((void*)0);
680 OSSL_DECODER *decoder = NULL((void*)0);
681 OSSL_CORE_BIO *cbio = NULL((void*)0);
682 BIO *bio = data->bio;
683 long loc;
684 size_t i;
685 int ok = 0;
686 /* For recursions */
687 struct decoder_process_data_st new_data;
688 const char *data_type = NULL((void*)0);
689 const char *data_structure = NULL((void*)0);
690
691 /*
692 * This is an indicator up the call stack that something was indeed
693 * decoded, leading to a recursive call of this function.
694 */
695 data->flag_next_level_called = 1;
696
697 memset(&new_data, 0, sizeof(new_data));
698 new_data.ctx = data->ctx;
699 new_data.recursion = data->recursion + 1;
700
701#define LEVEL_STR">>>>>>>>>>>>>>>>" ">>>>>>>>>>>>>>>>"
702#define LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"...") (new_data.recursion < sizeof(LEVEL_STR">>>>>>>>>>>>>>>>") \
703 ? &LEVEL_STR">>>>>>>>>>>>>>>>"[sizeof(LEVEL_STR">>>>>>>>>>>>>>>>") - new_data.recursion - 1] \
704 : LEVEL_STR">>>>>>>>>>>>>>>>" "...")
705
706 if (params == NULL((void*)0)) {
707 /* First iteration, where we prepare for what is to come */
708
709 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
710 BIO_printf(trc_out,
711 "(ctx %p) starting to walk the decoder chain\n",
712 (void *)new_data.ctx);
713 } OSSL_TRACE_END(DECODER)} while(0);
714
715 data->current_decoder_inst_index =
716 OSSL_DECODER_CTX_get_num_decoders(ctx);
717
718 bio = data->bio;
719 } else {
720 const OSSL_PARAM *p;
721 const char *trace_data_structure;
722
723 decoder_inst =
724 sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts,
725 data->current_decoder_inst_index);
726 decoder = OSSL_DECODER_INSTANCE_get_decoder(decoder_inst);
727
728 data->flag_construct_called = 0;
729 if (ctx->construct != NULL((void*)0)) {
730 int rv;
731
732 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
733 BIO_printf(trc_out,
734 "(ctx %p) %s Running constructor\n",
735 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."));
736 } OSSL_TRACE_END(DECODER)} while(0);
737
738 rv = ctx->construct(decoder_inst, params, ctx->construct_data);
739
740 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
741 BIO_printf(trc_out,
742 "(ctx %p) %s Running constructor => %d\n",
743 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), rv);
744 } OSSL_TRACE_END(DECODER)} while(0);
745
746 data->flag_construct_called = 1;
747 ok = (rv > 0);
748 if (ok)
749 goto end;
750 }
751
752 /* The constructor didn't return success */
753
754 /*
755 * so we try to use the object we got and feed it to any next
756 * decoder that will take it. Object references are not
757 * allowed for this.
758 * If this data isn't present, decoding has failed.
759 */
760
761 p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA"data");
762 if (p == NULL((void*)0) || p->data_type != OSSL_PARAM_OCTET_STRING5)
763 goto end;
764 new_data.bio = BIO_new_mem_buf(p->data, (int)p->data_size);
765 if (new_data.bio == NULL((void*)0))
766 goto end;
767 bio = new_data.bio;
768
769 /* Get the data type if there is one */
770 p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_TYPE"data-type");
771 if (p != NULL((void*)0) && !OSSL_PARAM_get_utf8_string_ptr(p, &data_type))
772 goto end;
773
774 /* Get the data structure if there is one */
775 p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_STRUCTURE"data-structure");
776 if (p != NULL((void*)0) && !OSSL_PARAM_get_utf8_string_ptr(p, &data_structure))
777 goto end;
778
779 /*
780 * If the data structure is "type-specific" and the data type is
781 * given, we drop the data structure. The reasoning is that the
782 * data type is already enough to find the applicable next decoder,
783 * so an additional "type-specific" data structure is extraneous.
784 *
785 * Furthermore, if the OSSL_DECODER caller asked for a type specific
786 * structure under another name, such as "DH", we get a mismatch
787 * if the data structure we just received is "type-specific".
788 * There's only so much you can do without infusing this code with
789 * too special knowledge.
790 */
791 trace_data_structure = data_structure;
Value stored to 'trace_data_structure' is never read
792 if (data_type != NULL((void*)0) && data_structure != NULL((void*)0)
793 && OPENSSL_strcasecmp(data_structure, "type-specific") == 0)
794 data_structure = NULL((void*)0);
795
796 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
797 BIO_printf(trc_out,
798 "(ctx %p) %s incoming from previous decoder (%p):\n"
799 " data type: %s, data structure: %s%s\n",
800 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (void *)decoder,
801 data_type, trace_data_structure,
802 (trace_data_structure == data_structure
803 ? "" : " (dropped)"));
804 } OSSL_TRACE_END(DECODER)} while(0);
805 }
806
807 /*
808 * If we have no more decoders to look through at this point,
809 * we failed
810 */
811 if (data->current_decoder_inst_index == 0)
812 goto end;
813
814 if ((loc = BIO_tell(bio)(int)BIO_ctrl(bio,133,0,((void*)0))) < 0) {
815 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_BIO_LIB)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,815,__func__), ERR_set_error)((60),((32 | (0x2 << 18L)
)),((void*)0));
816 goto end;
817 }
818
819 if ((cbio = ossl_core_bio_new_from_bio(bio)) == NULL((void*)0)) {
820 ERR_raise(ERR_LIB_OSSL_DECODER, ERR_R_MALLOC_FAILURE)(ERR_new(), ERR_set_debug("../deps/openssl/openssl/crypto/encode_decode/decoder_lib.c"
,820,__func__), ERR_set_error)((60),((256|((0x1 << 18L)
|(0x2 << 18L)))),((void*)0));
821 goto end;
822 }
823
824 for (i = data->current_decoder_inst_index; i-- > 0;) {
825 OSSL_DECODER_INSTANCE *new_decoder_inst =
826 sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i);
827 OSSL_DECODER *new_decoder =
828 OSSL_DECODER_INSTANCE_get_decoder(new_decoder_inst);
829 void *new_decoderctx =
830 OSSL_DECODER_INSTANCE_get_decoder_ctx(new_decoder_inst);
831 const char *new_input_type =
832 OSSL_DECODER_INSTANCE_get_input_type(new_decoder_inst);
833 int n_i_s_was_set = 0; /* We don't care here */
834 const char *new_input_structure =
835 OSSL_DECODER_INSTANCE_get_input_structure(new_decoder_inst,
836 &n_i_s_was_set);
837
838 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
839 BIO_printf(trc_out,
840 "(ctx %p) %s [%u] Considering decoder instance %p (decoder %p):\n"
841 " %s with %s\n",
842 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i,
843 (void *)new_decoder_inst, (void *)new_decoder,
844 OSSL_DECODER_get0_name(new_decoder),
845 OSSL_DECODER_get0_properties(new_decoder));
846 } OSSL_TRACE_END(DECODER)} while(0);
847
848 /*
849 * If |decoder| is NULL, it means we've just started, and the caller
850 * may have specified what it expects the initial input to be. If
851 * that's the case, we do this extra check.
852 */
853 if (decoder == NULL((void*)0) && ctx->start_input_type != NULL((void*)0)
854 && OPENSSL_strcasecmp(ctx->start_input_type, new_input_type) != 0) {
855 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
856 BIO_printf(trc_out,
857 "(ctx %p) %s [%u] the start input type '%s' doesn't match the input type of the considered decoder, skipping...\n",
858 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i,
859 ctx->start_input_type);
860 } OSSL_TRACE_END(DECODER)} while(0);
861 continue;
862 }
863
864 /*
865 * If we have a previous decoder, we check that the input type
866 * of the next to be used matches the type of this previous one.
867 * |new_input_type| holds the value of the "input-type" parameter
868 * for the decoder we're currently considering.
869 */
870 if (decoder != NULL((void*)0) && !OSSL_DECODER_is_a(decoder, new_input_type)) {
871 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
872 BIO_printf(trc_out,
873 "(ctx %p) %s [%u] the input type doesn't match the name of the previous decoder (%p), skipping...\n",
874 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i,
875 (void *)decoder);
876 } OSSL_TRACE_END(DECODER)} while(0);
877 continue;
878 }
879
880 /*
881 * If the previous decoder gave us a data type, we check to see
882 * if that matches the decoder we're currently considering.
883 */
884 if (data_type != NULL((void*)0) && !OSSL_DECODER_is_a(new_decoder, data_type)) {
885 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
886 BIO_printf(trc_out,
887 "(ctx %p) %s [%u] the previous decoder's data type doesn't match the name of the considered decoder, skipping...\n",
888 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i);
889 } OSSL_TRACE_END(DECODER)} while(0);
890 continue;
891 }
892
893 /*
894 * If the previous decoder gave us a data structure name, we check
895 * to see that it matches the input data structure of the decoder
896 * we're currently considering.
897 */
898 if (data_structure != NULL((void*)0)
899 && (new_input_structure == NULL((void*)0)
900 || OPENSSL_strcasecmp(data_structure,
901 new_input_structure) != 0)) {
902 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
903 BIO_printf(trc_out,
904 "(ctx %p) %s [%u] the previous decoder's data structure doesn't match the input structure of the considered decoder, skipping...\n",
905 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i);
906 } OSSL_TRACE_END(DECODER)} while(0);
907 continue;
908 }
909
910 /*
911 * If the decoder we're currently considering specifies a structure,
912 * and this check hasn't already been done earlier in this chain of
913 * decoder_process() calls, check that it matches the user provided
914 * input structure, if one is given.
915 */
916 if (!data->flag_input_structure_checked
917 && ctx->input_structure != NULL((void*)0)
918 && new_input_structure != NULL((void*)0)) {
919 data->flag_input_structure_checked = 1;
920 if (OPENSSL_strcasecmp(new_input_structure,
921 ctx->input_structure) != 0) {
922 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
923 BIO_printf(trc_out,
924 "(ctx %p) %s [%u] the previous decoder's data structure doesn't match the input structure given by the user, skipping...\n",
925 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i);
926 } OSSL_TRACE_END(DECODER)} while(0);
927 continue;
928 }
929 }
930
931 /*
932 * Checking the return value of BIO_reset() or BIO_seek() is unsafe.
933 * Furthermore, BIO_reset() is unsafe to use if the source BIO happens
934 * to be a BIO_s_mem(), because the earlier BIO_tell() gives us zero
935 * no matter where we are in the underlying buffer we're reading from.
936 *
937 * So, we simply do a BIO_seek(), and use BIO_tell() that we're back
938 * at the same position. This is a best effort attempt, but BIO_seek()
939 * and BIO_tell() should come as a pair...
940 */
941 (void)BIO_seek(bio, loc)(int)BIO_ctrl(bio,128,loc,((void*)0));
942 if (BIO_tell(bio)(int)BIO_ctrl(bio,133,0,((void*)0)) != loc)
943 goto end;
944
945 /* Recurse */
946 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
947 BIO_printf(trc_out,
948 "(ctx %p) %s [%u] Running decoder instance %p\n",
949 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i,
950 (void *)new_decoder_inst);
951 } OSSL_TRACE_END(DECODER)} while(0);
952
953 /*
954 * We only care about errors reported from decoder implementations
955 * if it returns false (i.e. there was a fatal error).
956 */
957 ERR_set_mark();
958
959 new_data.current_decoder_inst_index = i;
960 new_data.flag_input_structure_checked
961 = data->flag_input_structure_checked;
962 ok = new_decoder->decode(new_decoderctx, cbio,
963 new_data.ctx->selection,
964 decoder_process, &new_data,
965 ossl_pw_passphrase_callback_dec,
966 &new_data.ctx->pwdata);
967
968 OSSL_TRACE_BEGIN(DECODER)do { BIO *trc_out = ((void*)0); if (0) {
969 BIO_printf(trc_out,
970 "(ctx %p) %s [%u] Running decoder instance %p => %d"
971 " (recursed further: %s, construct called: %s)\n",
972 (void *)new_data.ctx, LEVEL(new_data.recursion < sizeof(">>>>>>>>>>>>>>>>"
) ? &">>>>>>>>>>>>>>>>"
[sizeof(">>>>>>>>>>>>>>>>"
) - new_data.recursion - 1] : ">>>>>>>>>>>>>>>>"
"..."), (unsigned int)i,
973 (void *)new_decoder_inst, ok,
974 new_data.flag_next_level_called ? "yes" : "no",
975 new_data.flag_construct_called ? "yes" : "no");
976 } OSSL_TRACE_END(DECODER)} while(0);
977
978 data->flag_construct_called = new_data.flag_construct_called;
979
980 /* Break on error or if we tried to construct an object already */
981 if (!ok || data->flag_construct_called) {
982 ERR_clear_last_mark();
983 break;
984 }
985 ERR_pop_to_mark();
986
987 /*
988 * Break if the decoder implementation that we called recursed, since
989 * that indicates that it successfully decoded something.
990 */
991 if (new_data.flag_next_level_called)
992 break;
993 }
994
995 end:
996 ossl_core_bio_free(cbio);
997 BIO_free(new_data.bio);
998 return ok;
999}