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1 | /* crypto/err/err.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
d3819813 | 8 | * |
3e575651 SL |
9 | * This library is free for commercial and non-commercial use as long as |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
d3819813 | 15 | * |
3e575651 SL |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
d3819813 | 22 | * |
3e575651 SL |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
d3819813 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
3e575651 SL |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
d3819813 | 40 | * |
3e575651 SL |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
d3819813 | 52 | * |
3e575651 SL |
53 | * The licence and distribution terms for any publically available version or |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | /* ==================================================================== | |
d3819813 | 59 | * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. |
3e575651 SL |
60 | * |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
d3819813 | 66 | * notice, this list of conditions and the following disclaimer. |
3e575651 SL |
67 | * |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
111 | ||
112 | #include <stdio.h> | |
113 | #include <stdarg.h> | |
114 | #include <string.h> | |
115 | #include "cryptlib.h" | |
116 | #include <openssl/lhash.h> | |
117 | #include <openssl/crypto.h> | |
118 | #include <openssl/buffer.h> | |
119 | #include <openssl/bio.h> | |
120 | #include <openssl/err.h> | |
121 | ||
d3819813 MTL |
122 | DECLARE_LHASH_OF(ERR_STRING_DATA); |
123 | DECLARE_LHASH_OF(ERR_STATE); | |
124 | ||
125 | static void err_load_strings(int lib, ERR_STRING_DATA *str); | |
126 | ||
127 | static void ERR_STATE_free(ERR_STATE *s); | |
128 | #ifndef OPENSSL_NO_ERR | |
129 | static ERR_STRING_DATA ERR_str_libraries[] = { | |
130 | {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"}, | |
131 | {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"}, | |
132 | {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"}, | |
133 | {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"}, | |
134 | {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"}, | |
135 | {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"}, | |
136 | {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"}, | |
137 | {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"}, | |
138 | {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"}, | |
139 | {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"}, | |
140 | {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"}, | |
141 | {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"}, | |
142 | {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"}, | |
143 | {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"}, | |
144 | {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"}, | |
145 | {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"}, | |
146 | {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"}, | |
147 | {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"}, | |
148 | {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"}, | |
149 | {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"}, | |
150 | {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"}, | |
151 | {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"}, | |
152 | {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"}, | |
153 | {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"}, | |
154 | {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"}, | |
155 | {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"}, | |
156 | {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"}, | |
157 | {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"}, | |
158 | {0, NULL}, | |
159 | }; | |
160 | ||
161 | static ERR_STRING_DATA ERR_str_functs[] = { | |
162 | {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"}, | |
163 | {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"}, | |
164 | {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"}, | |
165 | {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"}, | |
166 | {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"}, | |
167 | {ERR_PACK(0, SYS_F_BIND, 0), "bind"}, | |
168 | {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"}, | |
169 | {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"}, | |
170 | # ifdef OPENSSL_SYS_WINDOWS | |
171 | {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"}, | |
172 | # endif | |
173 | {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"}, | |
174 | {ERR_PACK(0, SYS_F_FREAD, 0), "fread"}, | |
175 | {0, NULL}, | |
176 | }; | |
177 | ||
178 | static ERR_STRING_DATA ERR_str_reasons[] = { | |
179 | {ERR_R_SYS_LIB, "system lib"}, | |
180 | {ERR_R_BN_LIB, "BN lib"}, | |
181 | {ERR_R_RSA_LIB, "RSA lib"}, | |
182 | {ERR_R_DH_LIB, "DH lib"}, | |
183 | {ERR_R_EVP_LIB, "EVP lib"}, | |
184 | {ERR_R_BUF_LIB, "BUF lib"}, | |
185 | {ERR_R_OBJ_LIB, "OBJ lib"}, | |
186 | {ERR_R_PEM_LIB, "PEM lib"}, | |
187 | {ERR_R_DSA_LIB, "DSA lib"}, | |
188 | {ERR_R_X509_LIB, "X509 lib"}, | |
189 | {ERR_R_ASN1_LIB, "ASN1 lib"}, | |
190 | {ERR_R_CONF_LIB, "CONF lib"}, | |
191 | {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, | |
192 | {ERR_R_EC_LIB, "EC lib"}, | |
193 | {ERR_R_SSL_LIB, "SSL lib"}, | |
194 | {ERR_R_BIO_LIB, "BIO lib"}, | |
195 | {ERR_R_PKCS7_LIB, "PKCS7 lib"}, | |
196 | {ERR_R_X509V3_LIB, "X509V3 lib"}, | |
197 | {ERR_R_PKCS12_LIB, "PKCS12 lib"}, | |
198 | {ERR_R_RAND_LIB, "RAND lib"}, | |
199 | {ERR_R_DSO_LIB, "DSO lib"}, | |
200 | {ERR_R_ENGINE_LIB, "ENGINE lib"}, | |
201 | {ERR_R_OCSP_LIB, "OCSP lib"}, | |
202 | {ERR_R_TS_LIB, "TS lib"}, | |
203 | ||
204 | {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, | |
205 | {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, | |
206 | {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, | |
207 | {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, | |
208 | {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, | |
209 | {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, | |
210 | ||
211 | {ERR_R_FATAL, "fatal"}, | |
212 | {ERR_R_MALLOC_FAILURE, "malloc failure"}, | |
213 | {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, | |
214 | "called a function you should not call"}, | |
215 | {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, | |
216 | {ERR_R_INTERNAL_ERROR, "internal error"}, | |
217 | {ERR_R_DISABLED, "called a function that was disabled at compile-time"}, | |
218 | ||
219 | {0, NULL}, | |
220 | }; | |
221 | #endif | |
222 | ||
223 | /* Define the predeclared (but externally opaque) "ERR_FNS" type */ | |
224 | struct st_ERR_FNS { | |
225 | /* Works on the "error_hash" string table */ | |
226 | LHASH_OF(ERR_STRING_DATA) *(*cb_err_get) (int create); | |
227 | void (*cb_err_del) (void); | |
228 | ERR_STRING_DATA *(*cb_err_get_item) (const ERR_STRING_DATA *); | |
229 | ERR_STRING_DATA *(*cb_err_set_item) (ERR_STRING_DATA *); | |
230 | ERR_STRING_DATA *(*cb_err_del_item) (ERR_STRING_DATA *); | |
231 | /* Works on the "thread_hash" error-state table */ | |
232 | LHASH_OF(ERR_STATE) *(*cb_thread_get) (int create); | |
233 | void (*cb_thread_release) (LHASH_OF(ERR_STATE) **hash); | |
234 | ERR_STATE *(*cb_thread_get_item) (const ERR_STATE *); | |
235 | ERR_STATE *(*cb_thread_set_item) (ERR_STATE *); | |
236 | void (*cb_thread_del_item) (const ERR_STATE *); | |
237 | /* Returns the next available error "library" numbers */ | |
238 | int (*cb_get_next_lib) (void); | |
239 | }; | |
240 | ||
241 | /* Predeclarations of the "err_defaults" functions */ | |
242 | static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); | |
243 | static void int_err_del(void); | |
244 | static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); | |
245 | static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); | |
246 | static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); | |
247 | static LHASH_OF(ERR_STATE) *int_thread_get(int create); | |
248 | static void int_thread_release(LHASH_OF(ERR_STATE) **hash); | |
249 | static ERR_STATE *int_thread_get_item(const ERR_STATE *); | |
250 | static ERR_STATE *int_thread_set_item(ERR_STATE *); | |
251 | static void int_thread_del_item(const ERR_STATE *); | |
252 | static int int_err_get_next_lib(void); | |
253 | /* The static ERR_FNS table using these defaults functions */ | |
254 | static const ERR_FNS err_defaults = { | |
255 | int_err_get, | |
256 | int_err_del, | |
257 | int_err_get_item, | |
258 | int_err_set_item, | |
259 | int_err_del_item, | |
260 | int_thread_get, | |
261 | int_thread_release, | |
262 | int_thread_get_item, | |
263 | int_thread_set_item, | |
264 | int_thread_del_item, | |
265 | int_err_get_next_lib | |
266 | }; | |
267 | ||
268 | /* The replacable table of ERR_FNS functions we use at run-time */ | |
269 | static const ERR_FNS *err_fns = NULL; | |
270 | ||
271 | /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ | |
272 | #define ERRFN(a) err_fns->cb_##a | |
273 | ||
274 | /* | |
275 | * The internal state used by "err_defaults" - as such, the setting, reading, | |
276 | * creating, and deleting of this data should only be permitted via the | |
277 | * "err_defaults" functions. This way, a linked module can completely defer | |
278 | * all ERR state operation (together with requisite locking) to the | |
279 | * implementations and state in the loading application. | |
280 | */ | |
281 | static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; | |
282 | static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; | |
283 | static int int_thread_hash_references = 0; | |
284 | static int int_err_library_number = ERR_LIB_USER; | |
285 | ||
286 | /* | |
287 | * Internal function that checks whether "err_fns" is set and if not, sets it | |
288 | * to the defaults. | |
289 | */ | |
290 | static void err_fns_check(void) | |
291 | { | |
292 | if (err_fns) | |
293 | return; | |
294 | ||
295 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
296 | if (!err_fns) | |
297 | err_fns = &err_defaults; | |
298 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
299 | } | |
300 | ||
301 | /* API functions to get or set the underlying ERR functions. */ | |
302 | ||
303 | const ERR_FNS *ERR_get_implementation(void) | |
304 | { | |
305 | err_fns_check(); | |
306 | return err_fns; | |
307 | } | |
308 | ||
309 | int ERR_set_implementation(const ERR_FNS *fns) | |
310 | { | |
311 | int ret = 0; | |
312 | ||
313 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
314 | /* | |
315 | * It's too late if 'err_fns' is non-NULL. BTW: not much point setting an | |
316 | * error is there?! | |
317 | */ | |
318 | if (!err_fns) { | |
319 | err_fns = fns; | |
320 | ret = 1; | |
321 | } | |
322 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
323 | return ret; | |
324 | } | |
325 | ||
326 | /* | |
327 | * These are the callbacks provided to "lh_new()" when creating the LHASH | |
328 | * tables internal to the "err_defaults" implementation. | |
329 | */ | |
330 | ||
331 | static unsigned long get_error_values(int inc, int top, const char **file, | |
332 | int *line, const char **data, | |
333 | int *flags); | |
334 | ||
335 | /* The internal functions used in the "err_defaults" implementation */ | |
336 | ||
337 | static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) | |
338 | { | |
339 | unsigned long ret, l; | |
340 | ||
341 | l = a->error; | |
342 | ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l); | |
343 | return (ret ^ ret % 19 * 13); | |
344 | } | |
345 | ||
346 | static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) | |
347 | ||
348 | static int err_string_data_cmp(const ERR_STRING_DATA *a, | |
349 | const ERR_STRING_DATA *b) | |
350 | { | |
351 | return (int)(a->error - b->error); | |
352 | } | |
353 | ||
354 | static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) | |
355 | ||
356 | static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) | |
357 | { | |
358 | LHASH_OF(ERR_STRING_DATA) *ret = NULL; | |
359 | ||
360 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
361 | if (!int_error_hash && create) { | |
362 | CRYPTO_push_info("int_err_get (err.c)"); | |
363 | int_error_hash = lh_ERR_STRING_DATA_new(); | |
364 | CRYPTO_pop_info(); | |
365 | } | |
366 | if (int_error_hash) | |
367 | ret = int_error_hash; | |
368 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
369 | ||
370 | return ret; | |
371 | } | |
372 | ||
373 | static void int_err_del(void) | |
374 | { | |
375 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
376 | if (int_error_hash) { | |
377 | lh_ERR_STRING_DATA_free(int_error_hash); | |
378 | int_error_hash = NULL; | |
379 | } | |
380 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
381 | } | |
382 | ||
383 | static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) | |
384 | { | |
385 | ERR_STRING_DATA *p; | |
386 | LHASH_OF(ERR_STRING_DATA) *hash; | |
387 | ||
388 | err_fns_check(); | |
389 | hash = ERRFN(err_get) (0); | |
390 | if (!hash) | |
391 | return NULL; | |
392 | ||
393 | CRYPTO_r_lock(CRYPTO_LOCK_ERR); | |
394 | p = lh_ERR_STRING_DATA_retrieve(hash, d); | |
395 | CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
396 | ||
397 | return p; | |
398 | } | |
399 | ||
400 | static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) | |
401 | { | |
402 | ERR_STRING_DATA *p; | |
403 | LHASH_OF(ERR_STRING_DATA) *hash; | |
404 | ||
405 | err_fns_check(); | |
406 | hash = ERRFN(err_get) (1); | |
407 | if (!hash) | |
408 | return NULL; | |
409 | ||
410 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
411 | p = lh_ERR_STRING_DATA_insert(hash, d); | |
412 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
413 | ||
414 | return p; | |
415 | } | |
416 | ||
417 | static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) | |
418 | { | |
419 | ERR_STRING_DATA *p; | |
420 | LHASH_OF(ERR_STRING_DATA) *hash; | |
421 | ||
422 | err_fns_check(); | |
423 | hash = ERRFN(err_get) (0); | |
424 | if (!hash) | |
425 | return NULL; | |
426 | ||
427 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
428 | p = lh_ERR_STRING_DATA_delete(hash, d); | |
429 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
430 | ||
431 | return p; | |
432 | } | |
433 | ||
434 | static unsigned long err_state_hash(const ERR_STATE *a) | |
435 | { | |
436 | return CRYPTO_THREADID_hash(&a->tid) * 13; | |
437 | } | |
438 | ||
439 | static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) | |
440 | ||
441 | static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) | |
442 | { | |
443 | return CRYPTO_THREADID_cmp(&a->tid, &b->tid); | |
444 | } | |
445 | ||
446 | static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) | |
447 | ||
448 | static LHASH_OF(ERR_STATE) *int_thread_get(int create) | |
449 | { | |
450 | LHASH_OF(ERR_STATE) *ret = NULL; | |
451 | ||
452 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
453 | if (!int_thread_hash && create) { | |
454 | CRYPTO_push_info("int_thread_get (err.c)"); | |
455 | int_thread_hash = lh_ERR_STATE_new(); | |
456 | CRYPTO_pop_info(); | |
457 | } | |
458 | if (int_thread_hash) { | |
459 | int_thread_hash_references++; | |
460 | ret = int_thread_hash; | |
461 | } | |
462 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
463 | return ret; | |
464 | } | |
465 | ||
466 | static void int_thread_release(LHASH_OF(ERR_STATE) **hash) | |
467 | { | |
468 | int i; | |
469 | ||
470 | if (hash == NULL || *hash == NULL) | |
471 | return; | |
472 | ||
473 | i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); | |
474 | ||
475 | #ifdef REF_PRINT | |
476 | fprintf(stderr, "%4d:%s\n", int_thread_hash_references, "ERR"); | |
477 | #endif | |
478 | if (i > 0) | |
479 | return; | |
480 | #ifdef REF_CHECK | |
481 | if (i < 0) { | |
482 | fprintf(stderr, "int_thread_release, bad reference count\n"); | |
483 | abort(); /* ok */ | |
484 | } | |
485 | #endif | |
486 | *hash = NULL; | |
487 | } | |
488 | ||
489 | static ERR_STATE *int_thread_get_item(const ERR_STATE *d) | |
490 | { | |
491 | ERR_STATE *p; | |
492 | LHASH_OF(ERR_STATE) *hash; | |
493 | ||
494 | err_fns_check(); | |
495 | hash = ERRFN(thread_get) (0); | |
496 | if (!hash) | |
497 | return NULL; | |
498 | ||
499 | CRYPTO_r_lock(CRYPTO_LOCK_ERR); | |
500 | p = lh_ERR_STATE_retrieve(hash, d); | |
501 | CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
502 | ||
503 | ERRFN(thread_release) (&hash); | |
504 | return p; | |
505 | } | |
506 | ||
507 | static ERR_STATE *int_thread_set_item(ERR_STATE *d) | |
508 | { | |
509 | ERR_STATE *p; | |
510 | LHASH_OF(ERR_STATE) *hash; | |
511 | ||
512 | err_fns_check(); | |
513 | hash = ERRFN(thread_get) (1); | |
514 | if (!hash) | |
515 | return NULL; | |
516 | ||
517 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
518 | p = lh_ERR_STATE_insert(hash, d); | |
519 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
520 | ||
521 | ERRFN(thread_release) (&hash); | |
522 | return p; | |
523 | } | |
524 | ||
525 | static void int_thread_del_item(const ERR_STATE *d) | |
526 | { | |
527 | ERR_STATE *p; | |
528 | LHASH_OF(ERR_STATE) *hash; | |
529 | ||
530 | err_fns_check(); | |
531 | hash = ERRFN(thread_get) (0); | |
532 | if (!hash) | |
533 | return; | |
534 | ||
535 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
536 | p = lh_ERR_STATE_delete(hash, d); | |
537 | /* make sure we don't leak memory */ | |
538 | if (int_thread_hash_references == 1 | |
539 | && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { | |
540 | lh_ERR_STATE_free(int_thread_hash); | |
541 | int_thread_hash = NULL; | |
542 | } | |
543 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
544 | ||
545 | ERRFN(thread_release) (&hash); | |
546 | if (p) | |
547 | ERR_STATE_free(p); | |
548 | } | |
549 | ||
550 | static int int_err_get_next_lib(void) | |
551 | { | |
552 | int ret; | |
553 | ||
554 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
555 | ret = int_err_library_number++; | |
556 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
557 | ||
558 | return ret; | |
559 | } | |
560 | ||
561 | #ifndef OPENSSL_NO_ERR | |
562 | # define NUM_SYS_STR_REASONS 127 | |
563 | # define LEN_SYS_STR_REASON 32 | |
564 | ||
565 | static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; | |
566 | /* | |
567 | * SYS_str_reasons is filled with copies of strerror() results at | |
568 | * initialization. 'errno' values up to 127 should cover all usual errors, | |
569 | * others will be displayed numerically by ERR_error_string. It is crucial | |
570 | * that we have something for each reason code that occurs in | |
571 | * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(), | |
572 | * which always gets an errno value and never one of those 'standard' reason | |
573 | * codes. | |
574 | */ | |
575 | ||
576 | static void build_SYS_str_reasons(void) | |
577 | { | |
578 | /* OPENSSL_malloc cannot be used here, use static storage instead */ | |
579 | static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; | |
580 | int i; | |
581 | static int init = 1; | |
582 | ||
583 | CRYPTO_r_lock(CRYPTO_LOCK_ERR); | |
584 | if (!init) { | |
585 | CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
586 | return; | |
587 | } | |
588 | ||
589 | CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
590 | CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
591 | if (!init) { | |
592 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
593 | return; | |
594 | } | |
595 | ||
596 | for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { | |
597 | ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; | |
598 | ||
599 | str->error = (unsigned long)i; | |
600 | if (str->string == NULL) { | |
601 | char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); | |
602 | char *src = strerror(i); | |
603 | if (src != NULL) { | |
604 | strncpy(*dest, src, sizeof *dest); | |
605 | (*dest)[sizeof *dest - 1] = '\0'; | |
606 | str->string = *dest; | |
607 | } | |
608 | } | |
609 | if (str->string == NULL) | |
610 | str->string = "unknown"; | |
611 | } | |
612 | ||
613 | /* | |
614 | * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as | |
615 | * required by ERR_load_strings. | |
616 | */ | |
617 | ||
618 | init = 0; | |
619 | ||
620 | CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
621 | } | |
622 | #endif | |
3e575651 SL |
623 | |
624 | #define err_clear_data(p,i) \ | |
d3819813 MTL |
625 | do { \ |
626 | if (((p)->err_data[i] != NULL) && \ | |
627 | (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ | |
628 | { \ | |
629 | OPENSSL_free((p)->err_data[i]); \ | |
630 | (p)->err_data[i]=NULL; \ | |
631 | } \ | |
632 | (p)->err_data_flags[i]=0; \ | |
633 | } while(0) | |
3e575651 SL |
634 | |
635 | #define err_clear(p,i) \ | |
d3819813 MTL |
636 | do { \ |
637 | (p)->err_flags[i]=0; \ | |
638 | (p)->err_buffer[i]=0; \ | |
639 | err_clear_data(p,i); \ | |
640 | (p)->err_file[i]=NULL; \ | |
641 | (p)->err_line[i]= -1; \ | |
642 | } while(0) | |
643 | ||
644 | static void ERR_STATE_free(ERR_STATE *s) | |
645 | { | |
646 | int i; | |
647 | ||
648 | if (s == NULL) | |
649 | return; | |
650 | ||
651 | for (i = 0; i < ERR_NUM_ERRORS; i++) { | |
652 | err_clear_data(s, i); | |
653 | } | |
654 | OPENSSL_free(s); | |
655 | } | |
656 | ||
657 | void ERR_load_ERR_strings(void) | |
658 | { | |
659 | err_fns_check(); | |
660 | #ifndef OPENSSL_NO_ERR | |
661 | err_load_strings(0, ERR_str_libraries); | |
662 | err_load_strings(0, ERR_str_reasons); | |
663 | err_load_strings(ERR_LIB_SYS, ERR_str_functs); | |
664 | build_SYS_str_reasons(); | |
665 | err_load_strings(ERR_LIB_SYS, SYS_str_reasons); | |
666 | #endif | |
667 | } | |
668 | ||
669 | static void err_load_strings(int lib, ERR_STRING_DATA *str) | |
670 | { | |
671 | while (str->error) { | |
672 | if (lib) | |
673 | str->error |= ERR_PACK(lib, 0, 0); | |
674 | ERRFN(err_set_item) (str); | |
675 | str++; | |
676 | } | |
677 | } | |
678 | ||
679 | void ERR_load_strings(int lib, ERR_STRING_DATA *str) | |
680 | { | |
681 | ERR_load_ERR_strings(); | |
682 | err_load_strings(lib, str); | |
683 | } | |
684 | ||
685 | void ERR_unload_strings(int lib, ERR_STRING_DATA *str) | |
686 | { | |
687 | while (str->error) { | |
688 | if (lib) | |
689 | str->error |= ERR_PACK(lib, 0, 0); | |
690 | ERRFN(err_del_item) (str); | |
691 | str++; | |
692 | } | |
693 | } | |
694 | ||
695 | void ERR_free_strings(void) | |
696 | { | |
697 | err_fns_check(); | |
698 | ERRFN(err_del) (); | |
699 | } | |
700 | ||
701 | /********************************************************/ | |
702 | ||
703 | void ERR_put_error(int lib, int func, int reason, const char *file, int line) | |
704 | { | |
705 | ERR_STATE *es; | |
3e575651 SL |
706 | |
707 | #ifdef _OSD_POSIX | |
d3819813 MTL |
708 | /* |
709 | * In the BS2000-OSD POSIX subsystem, the compiler generates path names | |
710 | * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to | |
711 | * something sensible. @@@ We shouldn't modify a const string, though. | |
712 | */ | |
713 | if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) { | |
714 | char *end; | |
715 | ||
716 | /* Skip the "*POSIX(" prefix */ | |
717 | file += sizeof("*POSIX(") - 1; | |
718 | end = &file[strlen(file) - 1]; | |
719 | if (*end == ')') | |
720 | *end = '\0'; | |
721 | /* Optional: use the basename of the path only. */ | |
722 | if ((end = strrchr(file, '/')) != NULL) | |
723 | file = &end[1]; | |
724 | } | |
3e575651 | 725 | #endif |
d3819813 | 726 | es = ERR_get_state(); |
3e575651 | 727 | |
d3819813 MTL |
728 | es->top = (es->top + 1) % ERR_NUM_ERRORS; |
729 | if (es->top == es->bottom) | |
730 | es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; | |
731 | es->err_flags[es->top] = 0; | |
732 | es->err_buffer[es->top] = ERR_PACK(lib, func, reason); | |
733 | es->err_file[es->top] = file; | |
734 | es->err_line[es->top] = line; | |
735 | err_clear_data(es, es->top); | |
736 | } | |
3e575651 | 737 | |
d3819813 MTL |
738 | void ERR_clear_error(void) |
739 | { | |
740 | int i; | |
741 | ERR_STATE *es; | |
3e575651 | 742 | |
d3819813 | 743 | es = ERR_get_state(); |
3e575651 | 744 | |
d3819813 MTL |
745 | for (i = 0; i < ERR_NUM_ERRORS; i++) { |
746 | err_clear(es, i); | |
747 | } | |
748 | es->top = es->bottom = 0; | |
749 | } | |
3e575651 SL |
750 | |
751 | unsigned long ERR_get_error(void) | |
d3819813 MTL |
752 | { |
753 | return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); | |
754 | } | |
3e575651 | 755 | |
d3819813 MTL |
756 | unsigned long ERR_get_error_line(const char **file, int *line) |
757 | { | |
758 | return (get_error_values(1, 0, file, line, NULL, NULL)); | |
759 | } | |
3e575651 SL |
760 | |
761 | unsigned long ERR_get_error_line_data(const char **file, int *line, | |
d3819813 MTL |
762 | const char **data, int *flags) |
763 | { | |
764 | return (get_error_values(1, 0, file, line, data, flags)); | |
765 | } | |
3e575651 SL |
766 | |
767 | unsigned long ERR_peek_error(void) | |
d3819813 MTL |
768 | { |
769 | return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); | |
770 | } | |
3e575651 SL |
771 | |
772 | unsigned long ERR_peek_error_line(const char **file, int *line) | |
d3819813 MTL |
773 | { |
774 | return (get_error_values(0, 0, file, line, NULL, NULL)); | |
775 | } | |
3e575651 SL |
776 | |
777 | unsigned long ERR_peek_error_line_data(const char **file, int *line, | |
d3819813 MTL |
778 | const char **data, int *flags) |
779 | { | |
780 | return (get_error_values(0, 0, file, line, data, flags)); | |
781 | } | |
3e575651 SL |
782 | |
783 | unsigned long ERR_peek_last_error(void) | |
d3819813 MTL |
784 | { |
785 | return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); | |
786 | } | |
3e575651 SL |
787 | |
788 | unsigned long ERR_peek_last_error_line(const char **file, int *line) | |
d3819813 MTL |
789 | { |
790 | return (get_error_values(0, 1, file, line, NULL, NULL)); | |
791 | } | |
3e575651 SL |
792 | |
793 | unsigned long ERR_peek_last_error_line_data(const char **file, int *line, | |
d3819813 MTL |
794 | const char **data, int *flags) |
795 | { | |
796 | return (get_error_values(0, 1, file, line, data, flags)); | |
797 | } | |
798 | ||
799 | static unsigned long get_error_values(int inc, int top, const char **file, | |
800 | int *line, const char **data, | |
801 | int *flags) | |
802 | { | |
803 | int i = 0; | |
804 | ERR_STATE *es; | |
805 | unsigned long ret; | |
806 | ||
807 | es = ERR_get_state(); | |
808 | ||
809 | if (inc && top) { | |
810 | if (file) | |
811 | *file = ""; | |
812 | if (line) | |
813 | *line = 0; | |
814 | if (data) | |
815 | *data = ""; | |
816 | if (flags) | |
817 | *flags = 0; | |
818 | ||
819 | return ERR_R_INTERNAL_ERROR; | |
820 | } | |
821 | ||
822 | if (es->bottom == es->top) | |
823 | return 0; | |
824 | if (top) | |
825 | i = es->top; /* last error */ | |
826 | else | |
827 | i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ | |
828 | ||
829 | ret = es->err_buffer[i]; | |
830 | if (inc) { | |
831 | es->bottom = i; | |
832 | es->err_buffer[i] = 0; | |
833 | } | |
834 | ||
835 | if ((file != NULL) && (line != NULL)) { | |
836 | if (es->err_file[i] == NULL) { | |
837 | *file = "NA"; | |
838 | if (line != NULL) | |
839 | *line = 0; | |
840 | } else { | |
841 | *file = es->err_file[i]; | |
842 | if (line != NULL) | |
843 | *line = es->err_line[i]; | |
844 | } | |
845 | } | |
846 | ||
847 | if (data == NULL) { | |
848 | if (inc) { | |
849 | err_clear_data(es, i); | |
850 | } | |
851 | } else { | |
852 | if (es->err_data[i] == NULL) { | |
853 | *data = ""; | |
854 | if (flags != NULL) | |
855 | *flags = 0; | |
856 | } else { | |
857 | *data = es->err_data[i]; | |
858 | if (flags != NULL) | |
859 | *flags = es->err_data_flags[i]; | |
860 | } | |
861 | } | |
862 | return ret; | |
863 | } | |
864 | ||
865 | void ERR_error_string_n(unsigned long e, char *buf, size_t len) | |
866 | { | |
867 | char lsbuf[64], fsbuf[64], rsbuf[64]; | |
868 | const char *ls, *fs, *rs; | |
869 | unsigned long l, f, r; | |
870 | ||
871 | l = ERR_GET_LIB(e); | |
872 | f = ERR_GET_FUNC(e); | |
873 | r = ERR_GET_REASON(e); | |
874 | ||
875 | ls = ERR_lib_error_string(e); | |
876 | fs = ERR_func_error_string(e); | |
877 | rs = ERR_reason_error_string(e); | |
878 | ||
879 | if (ls == NULL) | |
880 | BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); | |
881 | if (fs == NULL) | |
882 | BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); | |
883 | if (rs == NULL) | |
884 | BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); | |
885 | ||
886 | BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf, | |
887 | fs ? fs : fsbuf, rs ? rs : rsbuf); | |
888 | if (strlen(buf) == len - 1) { | |
889 | /* | |
890 | * output may be truncated; make sure we always have 5 | |
891 | * colon-separated fields, i.e. 4 colons ... | |
892 | */ | |
893 | #define NUM_COLONS 4 | |
894 | if (len > NUM_COLONS) { /* ... if possible */ | |
895 | int i; | |
896 | char *s = buf; | |
897 | ||
898 | for (i = 0; i < NUM_COLONS; i++) { | |
899 | char *colon = strchr(s, ':'); | |
900 | if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) { | |
901 | /* | |
902 | * set colon no. i at last possible position (buf[len-1] | |
903 | * is the terminating 0) | |
904 | */ | |
905 | colon = &buf[len - 1] - NUM_COLONS + i; | |
906 | *colon = ':'; | |
907 | } | |
908 | s = colon + 1; | |
909 | } | |
910 | } | |
911 | } | |
912 | } | |
913 | ||
914 | /* BAD for multi-threading: uses a local buffer if ret == NULL */ | |
915 | /* | |
916 | * ERR_error_string_n should be used instead for ret != NULL as | |
917 | * ERR_error_string cannot know how large the buffer is | |
918 | */ | |
919 | char *ERR_error_string(unsigned long e, char *ret) | |
920 | { | |
921 | static char buf[256]; | |
922 | ||
923 | if (ret == NULL) | |
924 | ret = buf; | |
925 | ERR_error_string_n(e, ret, 256); | |
926 | ||
927 | return ret; | |
928 | } | |
929 | ||
930 | LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) | |
931 | { | |
932 | err_fns_check(); | |
933 | return ERRFN(err_get) (0); | |
934 | } | |
935 | ||
936 | LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) | |
937 | { | |
938 | err_fns_check(); | |
939 | return ERRFN(thread_get) (0); | |
940 | } | |
941 | ||
942 | void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) | |
943 | { | |
944 | err_fns_check(); | |
945 | ERRFN(thread_release) (hash); | |
946 | } | |
947 | ||
948 | const char *ERR_lib_error_string(unsigned long e) | |
949 | { | |
950 | ERR_STRING_DATA d, *p; | |
951 | unsigned long l; | |
952 | ||
953 | err_fns_check(); | |
954 | l = ERR_GET_LIB(e); | |
955 | d.error = ERR_PACK(l, 0, 0); | |
956 | p = ERRFN(err_get_item) (&d); | |
957 | return ((p == NULL) ? NULL : p->string); | |
958 | } | |
959 | ||
960 | const char *ERR_func_error_string(unsigned long e) | |
961 | { | |
962 | ERR_STRING_DATA d, *p; | |
963 | unsigned long l, f; | |
964 | ||
965 | err_fns_check(); | |
966 | l = ERR_GET_LIB(e); | |
967 | f = ERR_GET_FUNC(e); | |
968 | d.error = ERR_PACK(l, f, 0); | |
969 | p = ERRFN(err_get_item) (&d); | |
970 | return ((p == NULL) ? NULL : p->string); | |
971 | } | |
972 | ||
973 | const char *ERR_reason_error_string(unsigned long e) | |
974 | { | |
975 | ERR_STRING_DATA d, *p = NULL; | |
976 | unsigned long l, r; | |
977 | ||
978 | err_fns_check(); | |
979 | l = ERR_GET_LIB(e); | |
980 | r = ERR_GET_REASON(e); | |
981 | d.error = ERR_PACK(l, 0, r); | |
982 | p = ERRFN(err_get_item) (&d); | |
983 | if (!p) { | |
984 | d.error = ERR_PACK(0, 0, r); | |
985 | p = ERRFN(err_get_item) (&d); | |
986 | } | |
987 | return ((p == NULL) ? NULL : p->string); | |
988 | } | |
989 | ||
990 | void ERR_remove_thread_state(const CRYPTO_THREADID *id) | |
991 | { | |
992 | ERR_STATE tmp; | |
993 | ||
994 | if (id) | |
995 | CRYPTO_THREADID_cpy(&tmp.tid, id); | |
996 | else | |
997 | CRYPTO_THREADID_current(&tmp.tid); | |
998 | err_fns_check(); | |
999 | /* | |
1000 | * thread_del_item automatically destroys the LHASH if the number of | |
1001 | * items reaches zero. | |
1002 | */ | |
1003 | ERRFN(thread_del_item) (&tmp); | |
1004 | } | |
1005 | ||
1006 | #ifndef OPENSSL_NO_DEPRECATED | |
1007 | void ERR_remove_state(unsigned long pid) | |
1008 | { | |
1009 | ERR_remove_thread_state(NULL); | |
1010 | } | |
1011 | #endif | |
1012 | ||
1013 | ERR_STATE *ERR_get_state(void) | |
1014 | { | |
1015 | static ERR_STATE fallback; | |
1016 | ERR_STATE *ret, tmp, *tmpp = NULL; | |
1017 | int i; | |
1018 | CRYPTO_THREADID tid; | |
1019 | ||
1020 | err_fns_check(); | |
1021 | CRYPTO_THREADID_current(&tid); | |
1022 | CRYPTO_THREADID_cpy(&tmp.tid, &tid); | |
1023 | ret = ERRFN(thread_get_item) (&tmp); | |
1024 | ||
1025 | /* ret == the error state, if NULL, make a new one */ | |
1026 | if (ret == NULL) { | |
1027 | ret = (ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); | |
1028 | if (ret == NULL) | |
1029 | return (&fallback); | |
1030 | CRYPTO_THREADID_cpy(&ret->tid, &tid); | |
1031 | ret->top = 0; | |
1032 | ret->bottom = 0; | |
1033 | for (i = 0; i < ERR_NUM_ERRORS; i++) { | |
1034 | ret->err_data[i] = NULL; | |
1035 | ret->err_data_flags[i] = 0; | |
1036 | } | |
1037 | tmpp = ERRFN(thread_set_item) (ret); | |
1038 | /* To check if insertion failed, do a get. */ | |
1039 | if (ERRFN(thread_get_item) (ret) != ret) { | |
1040 | ERR_STATE_free(ret); /* could not insert it */ | |
1041 | return (&fallback); | |
1042 | } | |
1043 | /* | |
1044 | * If a race occured in this function and we came second, tmpp is the | |
1045 | * first one that we just replaced. | |
1046 | */ | |
1047 | if (tmpp) | |
1048 | ERR_STATE_free(tmpp); | |
1049 | } | |
1050 | return ret; | |
1051 | } | |
1052 | ||
1053 | int ERR_get_next_error_library(void) | |
1054 | { | |
1055 | err_fns_check(); | |
1056 | return ERRFN(get_next_lib) (); | |
1057 | } | |
3e575651 SL |
1058 | |
1059 | void ERR_set_error_data(char *data, int flags) | |
d3819813 MTL |
1060 | { |
1061 | ERR_STATE *es; | |
1062 | int i; | |
3e575651 | 1063 | |
d3819813 | 1064 | es = ERR_get_state(); |
3e575651 | 1065 | |
d3819813 MTL |
1066 | i = es->top; |
1067 | if (i == 0) | |
1068 | i = ERR_NUM_ERRORS - 1; | |
3e575651 | 1069 | |
d3819813 MTL |
1070 | err_clear_data(es, i); |
1071 | es->err_data[i] = data; | |
1072 | es->err_data_flags[i] = flags; | |
1073 | } | |
3e575651 | 1074 | |
3e575651 | 1075 | void ERR_add_error_data(int num, ...) |
d3819813 MTL |
1076 | { |
1077 | va_list args; | |
1078 | va_start(args, num); | |
1079 | ERR_add_error_vdata(num, args); | |
1080 | va_end(args); | |
1081 | } | |
1082 | ||
1083 | void ERR_add_error_vdata(int num, va_list args) | |
1084 | { | |
1085 | int i, n, s; | |
1086 | char *str, *p, *a; | |
1087 | ||
1088 | s = 80; | |
1089 | str = OPENSSL_malloc(s + 1); | |
1090 | if (str == NULL) | |
1091 | return; | |
1092 | str[0] = '\0'; | |
1093 | ||
1094 | n = 0; | |
1095 | for (i = 0; i < num; i++) { | |
1096 | a = va_arg(args, char *); | |
1097 | /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ | |
1098 | if (a != NULL) { | |
1099 | n += strlen(a); | |
1100 | if (n > s) { | |
1101 | s = n + 20; | |
1102 | p = OPENSSL_realloc(str, s + 1); | |
1103 | if (p == NULL) { | |
1104 | OPENSSL_free(str); | |
1105 | return; | |
1106 | } else | |
1107 | str = p; | |
1108 | } | |
1109 | BUF_strlcat(str, a, (size_t)s + 1); | |
1110 | } | |
1111 | } | |
1112 | ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING); | |
1113 | } | |
3e575651 SL |
1114 | |
1115 | int ERR_set_mark(void) | |
d3819813 MTL |
1116 | { |
1117 | ERR_STATE *es; | |
3e575651 | 1118 | |
d3819813 | 1119 | es = ERR_get_state(); |
3e575651 | 1120 | |
d3819813 MTL |
1121 | if (es->bottom == es->top) |
1122 | return 0; | |
1123 | es->err_flags[es->top] |= ERR_FLAG_MARK; | |
1124 | return 1; | |
1125 | } | |
3e575651 SL |
1126 | |
1127 | int ERR_pop_to_mark(void) | |
d3819813 MTL |
1128 | { |
1129 | ERR_STATE *es; | |
3e575651 | 1130 | |
d3819813 | 1131 | es = ERR_get_state(); |
3e575651 | 1132 | |
d3819813 MTL |
1133 | while (es->bottom != es->top |
1134 | && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { | |
1135 | err_clear(es, es->top); | |
1136 | es->top -= 1; | |
1137 | if (es->top == -1) | |
1138 | es->top = ERR_NUM_ERRORS - 1; | |
1139 | } | |
3e575651 | 1140 | |
d3819813 MTL |
1141 | if (es->bottom == es->top) |
1142 | return 0; | |
1143 | es->err_flags[es->top] &= ~ERR_FLAG_MARK; | |
1144 | return 1; | |
1145 | } |