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. 8 * 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). 15 * 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. 22 * 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 :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 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. 52 * 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/* ==================================================================== 59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. 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 66 * notice, this list of conditions and the following disclaimer. 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 122static unsigned long get_error_values(int inc,int top, 123 const char **file,int *line, 124 const char **data,int *flags); 125 126#define err_clear_data(p,i) \ 127 do { \ 128 if (((p)->err_data[i] != NULL) && \ 129 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 130 { \ 131 OPENSSL_free((p)->err_data[i]); \ 132 (p)->err_data[i]=NULL; \ 133 } \ 134 (p)->err_data_flags[i]=0; \ 135 } while(0) 136 137#define err_clear(p,i) \ 138 do { \ 139 (p)->err_flags[i]=0; \ 140 (p)->err_buffer[i]=0; \ 141 err_clear_data(p,i); \ 142 (p)->err_file[i]=NULL; \ 143 (p)->err_line[i]= -1; \ 144 } while(0) 145 146void ERR_put_error(int lib, int func, int reason, const char *file, 147 int line) 148 { 149 ERR_STATE *es; 150 151#ifdef _OSD_POSIX 152 /* In the BS2000-OSD POSIX subsystem, the compiler generates 153 * path names in the form "*POSIX(/etc/passwd)". 154 * This dirty hack strips them to something sensible. 155 * @@@ We shouldn't modify a const string, though. 156 */ 157 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 158 char *end; 159 160 /* Skip the "*POSIX(" prefix */ 161 file += sizeof("*POSIX(")-1; 162 end = &file[strlen(file)-1]; 163 if (*end == ')') 164 *end = '\0'; 165 /* Optional: use the basename of the path only. */ 166 if ((end = strrchr(file, '/')) != NULL) 167 file = &end[1]; 168 } 169#endif 170 es=ERR_get_state(); 171 172 es->top=(es->top+1)%ERR_NUM_ERRORS; 173 if (es->top == es->bottom) 174 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 175 es->err_flags[es->top]=0; 176 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 177 es->err_file[es->top]=file; 178 es->err_line[es->top]=line; 179 err_clear_data(es,es->top); 180 } 181 182void ERR_clear_error(void) 183 { 184 int i; 185 ERR_STATE *es; 186 187 es=ERR_get_state(); 188 189 for (i=0; i<ERR_NUM_ERRORS; i++) 190 { 191 err_clear(es,i); 192 } 193 es->top=es->bottom=0; 194 } 195 196 197unsigned long ERR_get_error(void) 198 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 199 200unsigned long ERR_get_error_line(const char **file, 201 int *line) 202 { return(get_error_values(1,0,file,line,NULL,NULL)); } 203 204unsigned long ERR_get_error_line_data(const char **file, int *line, 205 const char **data, int *flags) 206 { return(get_error_values(1,0,file,line,data,flags)); } 207 208 209unsigned long ERR_peek_error(void) 210 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 211 212unsigned long ERR_peek_error_line(const char **file, int *line) 213 { return(get_error_values(0,0,file,line,NULL,NULL)); } 214 215unsigned long ERR_peek_error_line_data(const char **file, int *line, 216 const char **data, int *flags) 217 { return(get_error_values(0,0,file,line,data,flags)); } 218 219 220unsigned long ERR_peek_last_error(void) 221 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 222 223unsigned long ERR_peek_last_error_line(const char **file, int *line) 224 { return(get_error_values(0,1,file,line,NULL,NULL)); } 225 226unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 227 const char **data, int *flags) 228 { return(get_error_values(0,1,file,line,data,flags)); } 229 230 231static unsigned long get_error_values(int inc, int top, const char **file, int *line, 232 const char **data, int *flags) 233 { 234 int i=0; 235 ERR_STATE *es; 236 unsigned long ret; 237 238 es=ERR_get_state(); 239 240 if (inc && top) 241 { 242 if (file) *file = ""; 243 if (line) *line = 0; 244 if (data) *data = ""; 245 if (flags) *flags = 0; 246 247 return ERR_R_INTERNAL_ERROR; 248 } 249 250 if (es->bottom == es->top) return 0; 251 if (top) 252 i=es->top; /* last error */ 253 else 254 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 255 256 ret=es->err_buffer[i]; 257 if (inc) 258 { 259 es->bottom=i; 260 es->err_buffer[i]=0; 261 } 262 263 if ((file != NULL) && (line != NULL)) 264 { 265 if (es->err_file[i] == NULL) 266 { 267 *file="NA"; 268 if (line != NULL) *line=0; 269 } 270 else 271 { 272 *file=es->err_file[i]; 273 if (line != NULL) *line=es->err_line[i]; 274 } 275 } 276 277 if (data == NULL) 278 { 279 if (inc) 280 { 281 err_clear_data(es, i); 282 } 283 } 284 else 285 { 286 if (es->err_data[i] == NULL) 287 { 288 *data=""; 289 if (flags != NULL) *flags=0; 290 } 291 else 292 { 293 *data=es->err_data[i]; 294 if (flags != NULL) *flags=es->err_data_flags[i]; 295 } 296 } 297 return ret; 298 } 299 300void ERR_set_error_data(char *data, int flags) 301 { 302 ERR_STATE *es; 303 int i; 304 305 es=ERR_get_state(); 306 307 i=es->top; 308 if (i == 0) 309 i=ERR_NUM_ERRORS-1; 310 311 err_clear_data(es,i); 312 es->err_data[i]=data; 313 es->err_data_flags[i]=flags; 314 } 315 316void ERR_add_error_data(int num, ...) 317 { 318 va_list args; 319 int i,n,s; 320 char *str,*p,*a; 321 322 s=80; 323 str=OPENSSL_malloc(s+1); 324 if (str == NULL) return; 325 str[0]='\0'; 326 327 va_start(args, num); 328 n=0; 329 for (i=0; i<num; i++) 330 { 331 a=va_arg(args, char*); 332 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 333 if (a != NULL) 334 { 335 n+=strlen(a); 336 if (n > s) 337 { 338 s=n+20; 339 p=OPENSSL_realloc(str,s+1); 340 if (p == NULL) 341 { 342 OPENSSL_free(str); 343 goto err; 344 } 345 else 346 str=p; 347 } 348 BUF_strlcat(str,a,(size_t)s+1); 349 } 350 } 351 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 352 353err: 354 va_end(args); 355 } 356 357int ERR_set_mark(void) 358 { 359 ERR_STATE *es; 360 361 es=ERR_get_state(); 362 363 if (es->bottom == es->top) return 0; 364 es->err_flags[es->top]|=ERR_FLAG_MARK; 365 return 1; 366 } 367 368int ERR_pop_to_mark(void) 369 { 370 ERR_STATE *es; 371 372 es=ERR_get_state(); 373 374 while(es->bottom != es->top 375 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 376 { 377 err_clear(es,es->top); 378 es->top-=1; 379 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 380 } 381 382 if (es->bottom == es->top) return 0; 383 es->err_flags[es->top]&=~ERR_FLAG_MARK; 384 return 1; 385 } 386 387#ifdef OPENSSL_FIPS 388 389static ERR_STATE *fget_state(void) 390 { 391 static ERR_STATE fstate; 392 return &fstate; 393 } 394 395ERR_STATE *(*get_state_func)(void) = fget_state; 396void (*remove_state_func)(unsigned long pid); 397 398ERR_STATE *ERR_get_state(void) 399 { 400 return get_state_func(); 401 } 402 403void int_ERR_set_state_func(ERR_STATE *(*get_func)(void), 404 void (*remove_func)(unsigned long pid)) 405 { 406 get_state_func = get_func; 407 remove_state_func = remove_func; 408 } 409 410void ERR_remove_state(unsigned long pid) 411 { 412 if (remove_state_func) 413 remove_state_func(pid); 414 } 415 416#endif 417