crypto/err/err.c

   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 #include <stdio.h>
  60 #include <stdarg.h>
  61 #include <openssl/lhash.h>
  62 #include <openssl/crypto.h>
  63 #include "cryptlib.h"
  64 #include <openssl/buffer.h>
  65 #include <openssl/err.h>
  66 #include <openssl/crypto.h>
  67
  68
  69 static LHASH *error_hash=NULL;
  70 static LHASH *thread_hash=NULL;
  71
  72 static unsigned long err_hash(ERR_STRING_DATA *a);
  73 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
  74 static unsigned long pid_hash(ERR_STATE *pid);
  75 static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
  76 static unsigned long get_error_values(int inc,const char **file,int *line,
  77                                       const char **data,int *flags);
  78 static void ERR_STATE_free(ERR_STATE *s);
  79 #ifndef NO_ERR
  80 static ERR_STRING_DATA ERR_str_libraries[]=
  81         {
  82 {ERR_PACK(ERR_LIB_NONE,0,0)             ,"unknown library"},
  83 {ERR_PACK(ERR_LIB_SYS,0,0)              ,"system library"},
  84 {ERR_PACK(ERR_LIB_BN,0,0)               ,"bignum routines"},
  85 {ERR_PACK(ERR_LIB_RSA,0,0)              ,"rsa routines"},
  86 {ERR_PACK(ERR_LIB_DH,0,0)               ,"Diffie-Hellman routines"},
  87 {ERR_PACK(ERR_LIB_EVP,0,0)              ,"digital envelope routines"},
  88 {ERR_PACK(ERR_LIB_BUF,0,0)              ,"memory buffer routines"},
  89 {ERR_PACK(ERR_LIB_BIO,0,0)              ,"BIO routines"},
  90 {ERR_PACK(ERR_LIB_OBJ,0,0)              ,"object identifier routines"},
  91 {ERR_PACK(ERR_LIB_PEM,0,0)              ,"PEM routines"},
  92 {ERR_PACK(ERR_LIB_ASN1,0,0)             ,"asn1 encoding routines"},
  93 {ERR_PACK(ERR_LIB_X509,0,0)             ,"x509 certificate routines"},
  94 {ERR_PACK(ERR_LIB_CONF,0,0)             ,"configuation file routines"},
  95 {ERR_PACK(ERR_LIB_METH,0,0)             ,"X509 lookup 'method' routines"},
  96 {ERR_PACK(ERR_LIB_SSL,0,0)              ,"SSL routines"},
  97 {ERR_PACK(ERR_LIB_RSAREF,0,0)           ,"RSAref routines"},
  98 {ERR_PACK(ERR_LIB_PROXY,0,0)            ,"Proxy routines"},
  99 {ERR_PACK(ERR_LIB_BIO,0,0)              ,"BIO routines"},
 100 {ERR_PACK(ERR_LIB_PKCS7,0,0)            ,"PKCS7 routines"},
 101 {ERR_PACK(ERR_LIB_X509V3,0,0)           ,"X509 V3 routines"},
 102 {ERR_PACK(ERR_LIB_PKCS12,0,0)           ,"PKCS12 routines"},
 103 {ERR_PACK(ERR_LIB_RAND,0,0)             ,"random number generator"},
 104 {0,NULL},
 105         };
 106
 107 static ERR_STRING_DATA ERR_str_functs[]=
 108         {
 109         {ERR_PACK(0,SYS_F_FOPEN,0),             "fopen"},
 110         {ERR_PACK(0,SYS_F_CONNECT,0),           "connect"},
 111         {ERR_PACK(0,SYS_F_GETSERVBYNAME,0),     "getservbyname"},
 112         {ERR_PACK(0,SYS_F_SOCKET,0),            "socket"},
 113         {ERR_PACK(0,SYS_F_IOCTLSOCKET,0),       "ioctlsocket"},
 114         {ERR_PACK(0,SYS_F_BIND,0),              "bind"},
 115         {ERR_PACK(0,SYS_F_LISTEN,0),            "listen"},
 116         {ERR_PACK(0,SYS_F_ACCEPT,0),            "accept"},
 117 #ifdef WINDOWS
 118         {ERR_PACK(0,SYS_F_WSASTARTUP,0),        "WSAstartup"},
 119 #endif
 120         {ERR_PACK(0,SYS_F_OPENDIR,0),           "opendir"},
 121         {0,NULL},
 122         };
 123
 124 static ERR_STRING_DATA ERR_str_reasons[]=
 125         {
 126 {ERR_R_FATAL                             ,"fatal"},
 127 {ERR_R_SYS_LIB                          ,"system lib"},
 128 {ERR_R_BN_LIB                           ,"BN lib"},
 129 {ERR_R_RSA_LIB                          ,"RSA lib"},
 130 {ERR_R_DH_LIB                           ,"DH lib"},
 131 {ERR_R_EVP_LIB                          ,"EVP lib"},
 132 {ERR_R_BUF_LIB                          ,"BUF lib"},
 133 {ERR_R_BIO_LIB                          ,"BIO lib"},
 134 {ERR_R_OBJ_LIB                          ,"OBJ lib"},
 135 {ERR_R_PEM_LIB                          ,"PEM lib"},
 136 {ERR_R_X509_LIB                         ,"X509 lib"},
 137 {ERR_R_METH_LIB                         ,"METH lib"},
 138 {ERR_R_ASN1_LIB                         ,"ASN1 lib"},
 139 {ERR_R_CONF_LIB                         ,"CONF lib"},
 140 {ERR_R_SSL_LIB                          ,"SSL lib"},
 141 {ERR_R_PROXY_LIB                        ,"PROXY lib"},
 142 {ERR_R_BIO_LIB                          ,"BIO lib"},
 143 {ERR_R_PKCS7_LIB                        ,"PKCS7 lib"},
 144 {ERR_R_PKCS12_LIB                       ,"PKCS12 lib"},
 145 {ERR_R_MALLOC_FAILURE                   ,"Malloc failure"},
 146 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED      ,"called a function you should not call"},
 147 {ERR_R_PASSED_NULL_PARAMETER            ,"passed a null parameter"},
 148 {ERR_R_NESTED_ASN1_ERROR                ,"nested asn1 error"},
 149 {ERR_R_BAD_ASN1_OBJECT_HEADER           ,"bad asn1 object header"},
 150 {ERR_R_BAD_GET_ASN1_OBJECT_CALL         ,"bad get asn1 object call"},
 151 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE       ,"expecting an asn1 sequence"},
 152 {ERR_R_ASN1_LENGTH_MISMATCH             ,"asn1 length mismatch"},
 153 {ERR_R_MISSING_ASN1_EOS                 ,"missing asn1 eos"},
 154
 155 {0,NULL},
 156         };
 157 #endif
 158
 159 #define err_clear_data(p,i) \
 160         if (((p)->err_data[i] != NULL) && \
 161                 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
 162                 {  \
 163                 Free((p)->err_data[i]); \
 164                 (p)->err_data[i]=NULL; \
 165                 } \
 166         (p)->err_data_flags[i]=0;
 167
 168 static void ERR_STATE_free(ERR_STATE *s)
 169         {
 170         int i;
 171
 172         if(s == NULL)
 173             return;
 174
 175         for (i=0; i<ERR_NUM_ERRORS; i++)
 176                 {
 177                 err_clear_data(s,i);
 178                 }
 179         Free(s);
 180         }
 181
 182 void ERR_load_ERR_strings(void)
 183         {
 184         static int init=1;
 185
 186         if (init)
 187                 {
 188                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 189                 if (init == 0)
 190                         {
 191                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 192                         return;
 193                         }
 194                 init=0;
 195                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 196
 197 #ifndef NO_ERR
 198                 ERR_load_strings(0,ERR_str_libraries);
 199                 ERR_load_strings(0,ERR_str_reasons);
 200                 ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
 201 #endif
 202                 }
 203         }
 204
 205 void ERR_load_strings(int lib, ERR_STRING_DATA *str)
 206         {
 207         if (error_hash == NULL)
 208                 {
 209                 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
 210                 error_hash=lh_new(err_hash,err_cmp);
 211                 if (error_hash == NULL)
 212                         {
 213                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 214                         return;
 215                         }
 216                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 217
 218                 ERR_load_ERR_strings();
 219                 }
 220
 221         CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
 222         while (str->error)
 223                 {
 224                 str->error|=ERR_PACK(lib,0,0);
 225                 lh_insert(error_hash,(char *)str);
 226                 str++;
 227                 }
 228         CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 229         }
 230
 231 void ERR_free_strings(void)
 232         {
 233         CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 234
 235         if (error_hash != NULL)
 236                 {
 237                 lh_free(error_hash);
 238                 error_hash=NULL;
 239                 }
 240
 241         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 242         }
 243
 244 /********************************************************/
 245
 246 void ERR_put_error(int lib, int func, int reason, const char *file,
 247              int line)
 248         {
 249         ERR_STATE *es;
 250
 251 #ifdef _OSD_POSIX
 252         /* In the BS2000-OSD POSIX subsystem, the compiler generates
 253          * path names in the form "*POSIX(/etc/passwd)".
 254          * This dirty hack strips them to something sensible.
 255          * @@@ We shouldn't modify a const string, though.
 256          */
 257         if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
 258                 char *end;
 259
 260                 /* Skip the "*POSIX(" prefix */
 261                 file += sizeof("*POSIX(")-1;
 262                 end = &file[strlen(file)-1];
 263                 if (*end == ')')
 264                         *end = '\0';
 265                 /* Optional: use the basename of the path only. */
 266                 if ((end = strrchr(file, '/')) != NULL)
 267                         file = &end[1];
 268         }
 269 #endif
 270         es=ERR_get_state();
 271
 272         es->top=(es->top+1)%ERR_NUM_ERRORS;
 273         if (es->top == es->bottom)
 274                 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
 275         es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
 276         es->err_file[es->top]=file;
 277         es->err_line[es->top]=line;
 278         err_clear_data(es,es->top);
 279         }
 280
 281 void ERR_clear_error(void)
 282         {
 283         ERR_STATE *es;
 284
 285         es=ERR_get_state();
 286
 287 #if 0
 288         /* hmm... is this needed */
 289         for (i=0; i<ERR_NUM_ERRORS; i++)
 290                 {
 291                 es->err_buffer[i]=0;
 292                 es->err_file[i]=NULL;
 293                 es->err_line[i]= -1;
 294                 err_clear_data(es,i);
 295                 }
 296 #endif
 297         es->top=es->bottom=0;
 298         }
 299
 300
 301 unsigned long ERR_get_error(void)
 302         { return(get_error_values(1,NULL,NULL,NULL,NULL)); }
 303
 304 unsigned long ERR_get_error_line(const char **file,
 305              int *line)
 306         { return(get_error_values(1,file,line,NULL,NULL)); }
 307
 308 unsigned long ERR_get_error_line_data(const char **file, int *line,
 309              const char **data, int *flags)
 310         { return(get_error_values(1,file,line,
 311              data,flags)); }
 312
 313 unsigned long ERR_peek_error(void)
 314         { return(get_error_values(0,NULL,NULL,NULL,NULL)); }
 315
 316 unsigned long ERR_peek_error_line(const char **file,
 317              int *line)
 318         { return(get_error_values(0,file,line,NULL,NULL)); }
 319
 320 unsigned long ERR_peek_error_line_data(const char **file, int *line,
 321              const char **data, int *flags)
 322         { return(get_error_values(0,file,line,
 323              data,flags)); }
 324
 325 static unsigned long get_error_values(int inc, const char **file, int *line,
 326              const char **data, int *flags)
 327         {
 328         int i=0;
 329         ERR_STATE *es;
 330         unsigned long ret;
 331
 332         es=ERR_get_state();
 333
 334         if (es->bottom == es->top) return(0);
 335         i=(es->bottom+1)%ERR_NUM_ERRORS;
 336
 337         ret=es->err_buffer[i];
 338         if (inc)
 339                 {
 340                 es->bottom=i;
 341                 es->err_buffer[i]=0;
 342                 }
 343
 344         if ((file != NULL) && (line != NULL))
 345                 {
 346                 if (es->err_file[i] == NULL)
 347                         {
 348                         *file="NA";
 349                         if (line != NULL) *line=0;
 350                         }
 351                 else
 352                         {
 353                         *file=es->err_file[i];
 354                         if (line != NULL) *line=es->err_line[i];
 355                         }
 356                 }
 357
 358         if (data != NULL)
 359                 {
 360                 if (es->err_data[i] == NULL)
 361                         {
 362                         *data="";
 363                         if (flags != NULL) *flags=0;
 364                         }
 365                 else
 366                         {
 367                         *data=es->err_data[i];
 368                         if (flags != NULL) *flags=es->err_data_flags[i];
 369                         }
 370                 }
 371         return(ret);
 372         }
 373
 374 /* BAD for multi-threaded, uses a local buffer if ret == NULL */
 375 char *ERR_error_string(unsigned long e, char *ret)
 376         {
 377         static char buf[256];
 378         const char *ls,*fs,*rs;
 379         unsigned long l,f,r;
 380         int i;
 381
 382         l=ERR_GET_LIB(e);
 383         f=ERR_GET_FUNC(e);
 384         r=ERR_GET_REASON(e);
 385
 386         ls=ERR_lib_error_string(e);
 387         fs=ERR_func_error_string(e);
 388         rs=ERR_reason_error_string(e);
 389
 390         if (ret == NULL) ret=buf;
 391
 392         sprintf(&(ret[0]),"error:%08lX:",e);
 393         i=strlen(ret);
 394         if (ls == NULL)
 395                 sprintf(&(ret[i]),":lib(%lu) ",l);
 396         else    sprintf(&(ret[i]),"%s",ls);
 397         i=strlen(ret);
 398         if (fs == NULL)
 399                 sprintf(&(ret[i]),":func(%lu) ",f);
 400         else    sprintf(&(ret[i]),":%s",fs);
 401         i=strlen(ret);
 402         if (rs == NULL)
 403                 sprintf(&(ret[i]),":reason(%lu)",r);
 404         else    sprintf(&(ret[i]),":%s",rs);
 405
 406         return(ret);
 407         }
 408
 409 LHASH *ERR_get_string_table(void)
 410         {
 411         return(error_hash);
 412         }
 413
 414 LHASH *ERR_get_err_state_table(void)
 415         {
 416         return(thread_hash);
 417         }
 418
 419 const char *ERR_lib_error_string(unsigned long e)
 420         {
 421         ERR_STRING_DATA d,*p=NULL;
 422         unsigned long l;
 423
 424         l=ERR_GET_LIB(e);
 425
 426         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 427
 428         if (error_hash != NULL)
 429                 {
 430                 d.error=ERR_PACK(l,0,0);
 431                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 432                 }
 433
 434         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 435
 436         return((p == NULL)?NULL:p->string);
 437         }
 438
 439 const char *ERR_func_error_string(unsigned long e)
 440         {
 441         ERR_STRING_DATA d,*p=NULL;
 442         unsigned long l,f;
 443
 444         l=ERR_GET_LIB(e);
 445         f=ERR_GET_FUNC(e);
 446
 447         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 448
 449         if (error_hash != NULL)
 450                 {
 451                 d.error=ERR_PACK(l,f,0);
 452                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 453                 }
 454
 455         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 456
 457         return((p == NULL)?NULL:p->string);
 458         }
 459
 460 const char *ERR_reason_error_string(unsigned long e)
 461         {
 462         ERR_STRING_DATA d,*p=NULL;
 463         unsigned long l,r;
 464
 465         l=ERR_GET_LIB(e);
 466         r=ERR_GET_REASON(e);
 467
 468         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 469
 470         if (error_hash != NULL)
 471                 {
 472                 d.error=ERR_PACK(l,0,r);
 473                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 474                 if (p == NULL)
 475                         {
 476                         d.error=ERR_PACK(0,0,r);
 477                         p=(ERR_STRING_DATA *)lh_retrieve(error_hash,
 478                                 (char *)&d);
 479                         }
 480                 }
 481
 482         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 483
 484         return((p == NULL)?NULL:p->string);
 485         }
 486
 487 static unsigned long err_hash(ERR_STRING_DATA *a)
 488         {
 489         unsigned long ret,l;
 490
 491         l=a->error;
 492         ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
 493         return(ret^ret%19*13);
 494         }
 495
 496 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b)
 497         {
 498         return((int)(a->error-b->error));
 499         }
 500
 501 static unsigned long pid_hash(ERR_STATE *a)
 502         {
 503         return(a->pid*13);
 504         }
 505
 506 static int pid_cmp(ERR_STATE *a, ERR_STATE *b)
 507         {
 508         return((int)((long)a->pid - (long)b->pid));
 509         }
 510
 511 void ERR_remove_state(unsigned long pid)
 512         {
 513         ERR_STATE *p,tmp;
 514
 515         if (thread_hash == NULL)
 516                 return;
 517         if (pid == 0)
 518                 pid=(unsigned long)CRYPTO_thread_id();
 519         tmp.pid=pid;
 520         CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 521         p=(ERR_STATE *)lh_delete(thread_hash,(char *)&tmp);
 522         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 523
 524         if (p != NULL) ERR_STATE_free(p);
 525         }
 526
 527 ERR_STATE *ERR_get_state(void)
 528         {
 529         static ERR_STATE fallback;
 530         ERR_STATE *ret=NULL,tmp,*tmpp;
 531         int i;
 532         unsigned long pid;
 533
 534         pid=(unsigned long)CRYPTO_thread_id();
 535
 536         CRYPTO_r_lock(CRYPTO_LOCK_ERR);
 537         if (thread_hash == NULL)
 538                 {
 539                 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
 540                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 541                 if (thread_hash == NULL)
 542                         {
 543                         MemCheck_off();
 544                         thread_hash=lh_new(pid_hash,pid_cmp);
 545                         MemCheck_on();
 546                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 547                         if (thread_hash == NULL) return(&fallback);
 548                         }
 549                 else
 550                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 551                 }
 552         else
 553                 {
 554                 tmp.pid=pid;
 555                 ret=(ERR_STATE *)lh_retrieve(thread_hash,(char *)&tmp);
 556                 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
 557                 }
 558
 559         /* ret == the error state, if NULL, make a new one */
 560         if (ret == NULL)
 561                 {
 562                 ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE));
 563                 if (ret == NULL) return(&fallback);
 564                 ret->pid=pid;
 565                 ret->top=0;
 566                 ret->bottom=0;
 567                 for (i=0; i<ERR_NUM_ERRORS; i++)
 568                         {
 569                         ret->err_data[i]=NULL;
 570                         ret->err_data_flags[i]=0;
 571                         }
 572                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 573                 tmpp=(ERR_STATE *)lh_insert(thread_hash,(char *)ret);
 574                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 575                 if (tmpp != NULL) /* old entry - should not happen */
 576                         {
 577                         ERR_STATE_free(tmpp);
 578                         }
 579                 }
 580         return(ret);
 581         }
 582
 583 int ERR_get_next_error_library(void)
 584         {
 585         static int value=ERR_LIB_USER;
 586
 587         return(value++);
 588         }
 589
 590 void ERR_set_error_data(char *data, int flags)
 591         {
 592         ERR_STATE *es;
 593         int i;
 594
 595         es=ERR_get_state();
 596
 597         i=es->top;
 598         if (i == 0)
 599                 i=ERR_NUM_ERRORS-1;
 600
 601         es->err_data[i]=data;
 602         es->err_data_flags[es->top]=flags;
 603         }
 604
 605 void ERR_add_error_data(int num, ...)
 606         {
 607         va_list args;
 608         int i,n,s;
 609         char *str,*p,*a;
 610
 611         s=64;
 612         str=Malloc(s+1);
 613         if (str == NULL) return;
 614         str[0]='\0';
 615
 616         va_start(args, num);
 617         n=0;
 618         for (i=0; i<num; i++)
 619                 {
 620                 a=va_arg(args, char*);
 621                 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
 622                 if (a != NULL)
 623                         {
 624                         n+=strlen(a);
 625                         if (n > s)
 626                                 {
 627                                 s=n+20;
 628                                 p=Realloc(str,s+1);
 629                                 if (p == NULL)
 630                                         {
 631                                         Free(str);
 632                                         return;
 633                                         }
 634                                 else
 635                                         str=p;
 636                                 }
 637                         strcat(str,a);
 638                         }
 639                 }
 640         ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
 641
 642         va_end(args);
 643         }
 644