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