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 "lhash.h"
  61 #include "crypto.h"
  62 #include "cryptlib.h"
  63 #include "buffer.h"
  64 #include "err.h"
  65 #include "crypto.h"
  66
  67
  68 static LHASH *error_hash=NULL;
  69 static LHASH *thread_hash=NULL;
  70
  71 #ifndef NOPROTO
  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,char **file,int *line,
  77         char **data,int *flags);
  78 static void ERR_STATE_free(ERR_STATE *s);
  79 #else
  80 static unsigned long err_hash();
  81 static int err_cmp();
  82 static unsigned long pid_hash();
  83 static int pid_cmp();
  84 static unsigned long get_error_values();
  85 static void ERR_STATE_free();
  86 ERR_STATE *s;
  87 #endif
  88
  89 #ifndef NO_ERR
  90 static ERR_STRING_DATA ERR_str_libraries[]=
  91         {
  92 {ERR_PACK(ERR_LIB_NONE,0,0)             ,"unknown library"},
  93 {ERR_PACK(ERR_LIB_SYS,0,0)              ,"system library"},
  94 {ERR_PACK(ERR_LIB_BN,0,0)               ,"bignum routines"},
  95 {ERR_PACK(ERR_LIB_RSA,0,0)              ,"rsa routines"},
  96 {ERR_PACK(ERR_LIB_DH,0,0)               ,"Diffie-Hellman routines"},
  97 {ERR_PACK(ERR_LIB_EVP,0,0)              ,"digital envelope routines"},
  98 {ERR_PACK(ERR_LIB_BUF,0,0)              ,"memory buffer routines"},
  99 {ERR_PACK(ERR_LIB_BIO,0,0)              ,"BIO routines"},
 100 {ERR_PACK(ERR_LIB_OBJ,0,0)              ,"object identifier routines"},
 101 {ERR_PACK(ERR_LIB_PEM,0,0)              ,"PEM routines"},
 102 {ERR_PACK(ERR_LIB_ASN1,0,0)             ,"asn1 encoding routines"},
 103 {ERR_PACK(ERR_LIB_X509,0,0)             ,"x509 certificate routines"},
 104 {ERR_PACK(ERR_LIB_CONF,0,0)             ,"configuation file routines"},
 105 {ERR_PACK(ERR_LIB_METH,0,0)             ,"X509 lookup 'method' routines"},
 106 {ERR_PACK(ERR_LIB_SSL,0,0)              ,"SSL routines"},
 107 {ERR_PACK(ERR_LIB_RSAREF,0,0)           ,"RSAref routines"},
 108 {ERR_PACK(ERR_LIB_PROXY,0,0)            ,"Proxy routines"},
 109 {ERR_PACK(ERR_LIB_BIO,0,0)              ,"BIO routines"},
 110 {ERR_PACK(ERR_LIB_PKCS7,0,0)            ,"PKCS7 routines"},
 111 {ERR_PACK(ERR_LIB_X509V3,0,0)           ,"X509 V3 routines"},
 112 {ERR_PACK(ERR_LIB_PKCS12,0,0)           ,"PKCS12 routines"},
 113 {0,NULL},
 114         };
 115
 116 static ERR_STRING_DATA ERR_str_functs[]=
 117         {
 118         {ERR_PACK(0,SYS_F_FOPEN,0),             "fopen"},
 119         {ERR_PACK(0,SYS_F_CONNECT,0),           "connect"},
 120         {ERR_PACK(0,SYS_F_GETSERVBYNAME,0),     "getservbyname"},
 121         {ERR_PACK(0,SYS_F_SOCKET,0),            "socket"},
 122         {ERR_PACK(0,SYS_F_IOCTLSOCKET,0),       "ioctlsocket"},
 123         {ERR_PACK(0,SYS_F_BIND,0),              "bind"},
 124         {ERR_PACK(0,SYS_F_LISTEN,0),            "listen"},
 125         {ERR_PACK(0,SYS_F_ACCEPT,0),            "accept"},
 126 #ifdef WINDOWS
 127         {ERR_PACK(0,SYS_F_WSASTARTUP,0),        "WSAstartup"},
 128 #endif
 129         {0,NULL},
 130         };
 131
 132 static ERR_STRING_DATA ERR_str_reasons[]=
 133         {
 134 {ERR_R_FATAL                             ,"fatal"},
 135 {ERR_R_SYS_LIB                          ,"system lib"},
 136 {ERR_R_BN_LIB                           ,"BN lib"},
 137 {ERR_R_RSA_LIB                          ,"RSA lib"},
 138 {ERR_R_DH_LIB                           ,"DH lib"},
 139 {ERR_R_EVP_LIB                          ,"EVP lib"},
 140 {ERR_R_BUF_LIB                          ,"BUF lib"},
 141 {ERR_R_BIO_LIB                          ,"BIO lib"},
 142 {ERR_R_OBJ_LIB                          ,"OBJ lib"},
 143 {ERR_R_PEM_LIB                          ,"PEM lib"},
 144 {ERR_R_X509_LIB                         ,"X509 lib"},
 145 {ERR_R_METH_LIB                         ,"METH lib"},
 146 {ERR_R_ASN1_LIB                         ,"ASN1 lib"},
 147 {ERR_R_CONF_LIB                         ,"CONF lib"},
 148 {ERR_R_SSL_LIB                          ,"SSL lib"},
 149 {ERR_R_PROXY_LIB                        ,"PROXY lib"},
 150 {ERR_R_BIO_LIB                          ,"BIO lib"},
 151 {ERR_R_PKCS7_LIB                        ,"PKCS7 lib"},
 152 {ERR_R_PKCS12_LIB                       ,"PKCS12 lib"},
 153 {ERR_R_MALLOC_FAILURE                   ,"Malloc failure"},
 154 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED      ,"called a fuction you should not call"},
 155 {ERR_R_PASSED_NULL_PARAMETER            ,"passed a null parameter"},
 156 {ERR_R_NESTED_ASN1_ERROR                ,"nested asn1 error"},
 157 {ERR_R_BAD_ASN1_OBJECT_HEADER           ,"bad asn1 object header"},
 158 {ERR_R_BAD_GET_ASN1_OBJECT_CALL         ,"bad get asn1 object call"},
 159 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE       ,"expecting an asn1 sequence"},
 160 {ERR_R_ASN1_LENGTH_MISMATCH             ,"asn1 length mismatch"},
 161 {ERR_R_MISSING_ASN1_EOS                 ,"missing asn1 eos"},
 162
 163 {0,NULL},
 164         };
 165 #endif
 166
 167 #define err_clear_data(p,i) \
 168         if (((p)->err_data[i] != NULL) && \
 169                 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
 170                 {  \
 171                 Free((p)->err_data[i]); \
 172                 (p)->err_data[i]=NULL; \
 173                 } \
 174         (p)->err_data_flags[i]=0;
 175
 176 static void ERR_STATE_free(s)
 177 ERR_STATE *s;
 178         {
 179         int i;
 180
 181         if(s == NULL)
 182             return;
 183
 184         for (i=0; i<ERR_NUM_ERRORS; i++)
 185                 {
 186                 err_clear_data(s,i);
 187                 }
 188         Free(s);
 189         }
 190
 191 void ERR_load_ERR_strings()
 192         {
 193         static int init=1;
 194
 195         if (init)
 196                 {
 197                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 198                 if (init == 0)
 199                         {
 200                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 201                         return;
 202                         }
 203                 init=0;
 204                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 205
 206 #ifndef NO_ERR
 207                 ERR_load_strings(0,ERR_str_libraries);
 208                 ERR_load_strings(0,ERR_str_reasons);
 209                 ERR_load_strings(ERR_LIB_SYS,ERR_str_functs);
 210 #endif
 211                 }
 212         }
 213
 214 void ERR_load_strings(lib,str)
 215 int lib;
 216 ERR_STRING_DATA *str;
 217         {
 218         if (error_hash == NULL)
 219                 {
 220                 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
 221                 error_hash=lh_new(err_hash,err_cmp);
 222                 if (error_hash == NULL)
 223                         {
 224                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 225                         return;
 226                         }
 227                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 228
 229                 ERR_load_ERR_strings();
 230                 }
 231
 232         CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH);
 233         while (str->error)
 234                 {
 235                 str->error|=ERR_PACK(lib,0,0);
 236                 lh_insert(error_hash,(char *)str);
 237                 str++;
 238                 }
 239         CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH);
 240         }
 241
 242 void ERR_free_strings()
 243         {
 244         CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 245
 246         if (error_hash != NULL)
 247                 {
 248                 lh_free(error_hash);
 249                 error_hash=NULL;
 250                 }
 251
 252         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 253         }
 254
 255 /********************************************************/
 256
 257 void ERR_put_error(lib,func,reason,file,line)
 258 int lib,func,reason;
 259 char *file;
 260 int line;
 261         {
 262         ERR_STATE *es;
 263
 264         es=ERR_get_state();
 265
 266         es->top=(es->top+1)%ERR_NUM_ERRORS;
 267         if (es->top == es->bottom)
 268                 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
 269         es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
 270         es->err_file[es->top]=file;
 271         es->err_line[es->top]=line;
 272         err_clear_data(es,es->top);
 273         }
 274
 275 void ERR_clear_error()
 276         {
 277         ERR_STATE *es;
 278
 279         es=ERR_get_state();
 280
 281 #if 0
 282         /* hmm... is this needed */
 283         for (i=0; i<ERR_NUM_ERRORS; i++)
 284                 {
 285                 es->err_buffer[i]=0;
 286                 es->err_file[i]=NULL;
 287                 es->err_line[i]= -1;
 288                 err_clear_data(es,i);
 289                 }
 290 #endif
 291         es->top=es->bottom=0;
 292         }
 293
 294
 295 unsigned long ERR_get_error()
 296         { return(get_error_values(1,NULL,NULL,NULL,NULL)); }
 297
 298 unsigned long ERR_get_error_line(file,line)
 299 char **file;
 300 int *line;
 301         { return(get_error_values(1,file,line,NULL,NULL)); }
 302
 303 unsigned long ERR_get_error_line_data(file,line,data,flags)
 304 char **file;
 305 int *line;
 306 char **data;
 307 int *flags;
 308         { return(get_error_values(1,file,line,data,flags)); }
 309
 310 unsigned long ERR_peek_error()
 311         { return(get_error_values(0,NULL,NULL,NULL,NULL)); }
 312
 313 unsigned long ERR_peek_error_line(file,line)
 314 char **file;
 315 int *line;
 316         { return(get_error_values(0,file,line,NULL,NULL)); }
 317
 318 unsigned long ERR_peek_error_line_data(file,line,data,flags)
 319 char **file;
 320 int *line;
 321 char **data;
 322 int *flags;
 323         { return(get_error_values(0,file,line,data,flags)); }
 324
 325 static unsigned long get_error_values(inc,file,line,data,flags)
 326 int inc;
 327 char **file;
 328 int *line;
 329 char **data;
 330 int *flags;
 331         {
 332         int i=0;
 333         ERR_STATE *es;
 334         unsigned long ret;
 335
 336         es=ERR_get_state();
 337
 338         if (es->bottom == es->top) return(0);
 339         i=(es->bottom+1)%ERR_NUM_ERRORS;
 340
 341         ret=es->err_buffer[i];
 342         if (inc)
 343                 {
 344                 es->bottom=i;
 345                 es->err_buffer[i]=0;
 346                 }
 347
 348         if ((file != NULL) && (line != NULL))
 349                 {
 350                 if (es->err_file[i] == NULL)
 351                         {
 352                         *file="NA";
 353                         if (line != NULL) *line=0;
 354                         }
 355                 else
 356                         {
 357                         *file=es->err_file[i];
 358                         if (line != NULL) *line=es->err_line[i];
 359                         }
 360                 }
 361
 362         if (data != NULL)
 363                 {
 364                 if (es->err_data[i] == NULL)
 365                         {
 366                         *data="";
 367                         if (flags != NULL) *flags=0;
 368                         }
 369                 else
 370                         {
 371                         *data=es->err_data[i];
 372                         if (flags != NULL) *flags=es->err_data_flags[i];
 373                         }
 374                 }
 375         return(ret);
 376         }
 377
 378 /* BAD for multi-threaded, uses a local buffer if ret == NULL */
 379 char *ERR_error_string(e,ret)
 380 unsigned long e;
 381 char *ret;
 382         {
 383         static char buf[256];
 384         char *ls,*fs,*rs;
 385         unsigned long l,f,r;
 386         int i;
 387
 388         l=ERR_GET_LIB(e);
 389         f=ERR_GET_FUNC(e);
 390         r=ERR_GET_REASON(e);
 391
 392         ls=ERR_lib_error_string(e);
 393         fs=ERR_func_error_string(e);
 394         rs=ERR_reason_error_string(e);
 395
 396         if (ret == NULL) ret=buf;
 397
 398         sprintf(&(ret[0]),"error:%08lX:",e);
 399         i=strlen(ret);
 400         if (ls == NULL)
 401                 sprintf(&(ret[i]),":lib(%lu) ",l);
 402         else    sprintf(&(ret[i]),"%s",ls);
 403         i=strlen(ret);
 404         if (fs == NULL)
 405                 sprintf(&(ret[i]),":func(%lu) ",f);
 406         else    sprintf(&(ret[i]),":%s",fs);
 407         i=strlen(ret);
 408         if (rs == NULL)
 409                 sprintf(&(ret[i]),":reason(%lu)",r);
 410         else    sprintf(&(ret[i]),":%s",rs);
 411
 412         return(ret);
 413         }
 414
 415 LHASH *ERR_get_string_table()
 416         {
 417         return(error_hash);
 418         }
 419
 420 LHASH *ERR_get_err_state_table()
 421         {
 422         return(thread_hash);
 423         }
 424
 425 char *ERR_lib_error_string(e)
 426 unsigned long e;
 427         {
 428         ERR_STRING_DATA d,*p=NULL;
 429         unsigned long l;
 430
 431         l=ERR_GET_LIB(e);
 432
 433         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 434
 435         if (error_hash != NULL)
 436                 {
 437                 d.error=ERR_PACK(l,0,0);
 438                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 439                 }
 440
 441         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 442
 443         return((p == NULL)?NULL:p->string);
 444         }
 445
 446 char *ERR_func_error_string(e)
 447 unsigned long e;
 448         {
 449         ERR_STRING_DATA d,*p=NULL;
 450         unsigned long l,f;
 451
 452         l=ERR_GET_LIB(e);
 453         f=ERR_GET_FUNC(e);
 454
 455         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 456
 457         if (error_hash != NULL)
 458                 {
 459                 d.error=ERR_PACK(l,f,0);
 460                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 461                 }
 462
 463         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 464
 465         return((p == NULL)?NULL:p->string);
 466         }
 467
 468 char *ERR_reason_error_string(e)
 469 unsigned long e;
 470         {
 471         ERR_STRING_DATA d,*p=NULL;
 472         unsigned long l,r;
 473
 474         l=ERR_GET_LIB(e);
 475         r=ERR_GET_REASON(e);
 476
 477         CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH);
 478
 479         if (error_hash != NULL)
 480                 {
 481                 d.error=ERR_PACK(l,0,r);
 482                 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,(char *)&d);
 483                 if (p == NULL)
 484                         {
 485                         d.error=ERR_PACK(0,0,r);
 486                         p=(ERR_STRING_DATA *)lh_retrieve(error_hash,
 487                                 (char *)&d);
 488                         }
 489                 }
 490
 491         CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH);
 492
 493         return((p == NULL)?NULL:p->string);
 494         }
 495
 496 static unsigned long err_hash(a)
 497 ERR_STRING_DATA *a;
 498         {
 499         unsigned long ret,l;
 500
 501         l=a->error;
 502         ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
 503         return(ret^ret%19*13);
 504         }
 505
 506 static int err_cmp(a,b)
 507 ERR_STRING_DATA *a,*b;
 508         {
 509         return((int)(a->error-b->error));
 510         }
 511
 512 static unsigned long pid_hash(a)
 513 ERR_STATE *a;
 514         {
 515         return(a->pid*13);
 516         }
 517
 518 static int pid_cmp(a,b)
 519 ERR_STATE *a,*b;
 520         {
 521         return((int)((long)a->pid - (long)b->pid));
 522         }
 523
 524 void ERR_remove_state(pid)
 525 unsigned long pid;
 526         {
 527         ERR_STATE *p,tmp;
 528
 529         if (thread_hash == NULL)
 530                 return;
 531         if (pid == 0)
 532                 pid=(unsigned long)CRYPTO_thread_id();
 533         tmp.pid=pid;
 534         CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 535         p=(ERR_STATE *)lh_delete(thread_hash,(char *)&tmp);
 536         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 537
 538         if (p != NULL) ERR_STATE_free(p);
 539         }
 540
 541 ERR_STATE *ERR_get_state()
 542         {
 543         static ERR_STATE fallback;
 544         ERR_STATE *ret=NULL,tmp,*tmpp;
 545         int i;
 546         unsigned long pid;
 547
 548         pid=(unsigned long)CRYPTO_thread_id();
 549
 550         CRYPTO_r_lock(CRYPTO_LOCK_ERR);
 551         if (thread_hash == NULL)
 552                 {
 553                 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
 554                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 555                 if (thread_hash == NULL)
 556                         {
 557                         MemCheck_off();
 558                         thread_hash=lh_new(pid_hash,pid_cmp);
 559                         MemCheck_on();
 560                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 561                         if (thread_hash == NULL) return(&fallback);
 562                         }
 563                 else
 564                         CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 565                 }
 566         else
 567                 {
 568                 tmp.pid=pid;
 569                 ret=(ERR_STATE *)lh_retrieve(thread_hash,(char *)&tmp);
 570                 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
 571                 }
 572
 573         /* ret == the error state, if NULL, make a new one */
 574         if (ret == NULL)
 575                 {
 576                 ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE));
 577                 if (ret == NULL) return(&fallback);
 578                 ret->pid=pid;
 579                 ret->top=0;
 580                 ret->bottom=0;
 581                 for (i=0; i<ERR_NUM_ERRORS; i++)
 582                         {
 583                         ret->err_data[i]=NULL;
 584                         ret->err_data_flags[i]=0;
 585                         }
 586                 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
 587                 tmpp=(ERR_STATE *)lh_insert(thread_hash,(char *)ret);
 588                 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
 589                 if (tmpp != NULL) /* old entry - should not happen */
 590                         {
 591                         ERR_STATE_free(tmpp);
 592                         }
 593                 }
 594         return(ret);
 595         }
 596
 597 int ERR_get_next_error_library()
 598         {
 599         static int value=ERR_LIB_USER;
 600
 601         return(value++);
 602         }
 603
 604 void ERR_set_error_data(data,flags)
 605 char *data;
 606 int flags;
 607         {
 608         ERR_STATE *es;
 609         int i;
 610
 611         es=ERR_get_state();
 612
 613         i=es->top;
 614         if (i == 0)
 615                 i=ERR_NUM_ERRORS-1;
 616
 617         es->err_data[i]=data;
 618         es->err_data_flags[es->top]=flags;
 619         }
 620
 621 void ERR_add_error_data( VAR_PLIST(int , num))
 622 VAR_ALIST
 623         {
 624         VAR_BDEFN(args, int, num);
 625         int i,n,s;
 626         char *str,*p,*a;
 627
 628         s=64;
 629         str=Malloc(s+1);
 630         if (str == NULL) return;
 631         str[0]='\0';
 632
 633         VAR_INIT(args,int,num);
 634         n=0;
 635         for (i=0; i<num; i++)
 636                 {
 637                 VAR_ARG(args,char *,a);
 638                 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
 639                 if (a != NULL)
 640                         {
 641                         n+=strlen(a);
 642                         if (n > s)
 643                                 {
 644                                 s=n+20;
 645                                 p=Realloc(str,s+1);
 646                                 if (p == NULL)
 647                                         {
 648                                         Free(str);
 649                                         return;
 650                                         }
 651                                 else
 652                                         str=p;
 653                                 }
 654                         strcat(str,a);
 655                         }
 656                 }
 657         ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
 658
 659         VAR_END( args );
 660         }
 661