crypto/conf/conf.c

   1 /* crypto/conf/conf.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 <errno.h>
  61 #include "cryptlib.h"
  62 #include <openssl/stack.h>
  63 #include <openssl/lhash.h>
  64 #include <openssl/conf.h>
  65 #include <openssl/buffer.h>
  66 #include <openssl/err.h>
  67
  68 #include "conf_lcl.h"
  69
  70 #ifndef NOPROTO
  71 static void value_free_hash(CONF_VALUE *a, LHASH *conf);
  72 static void value_free_stack(CONF_VALUE *a,LHASH *conf);
  73 static unsigned long hash(CONF_VALUE *v);
  74 static int cmp(CONF_VALUE *a,CONF_VALUE *b);
  75 static char *eat_ws(char *p);
  76 static char *eat_alpha_numeric(char *p);
  77 static void clear_comments(char *p);
  78 static int str_copy(LHASH *conf,char *section,char **to, char *from);
  79 static char *scan_quote(char *p);
  80 static CONF_VALUE *new_section(LHASH *conf,char *section);
  81 static CONF_VALUE *get_section(LHASH *conf,char *section);
  82 #else
  83 static void value_free_hash();
  84 static void value_free_stack();
  85 static unsigned long hash();
  86 static int cmp();
  87 static char *eat_ws();
  88 static char *eat_alpha_numeric();
  89 static void clear_comments();
  90 static int str_copy();
  91 static char *scan_quote();
  92 static CONF_VALUE *new_section();
  93 static CONF_VALUE *get_section();
  94 #endif
  95
  96 #define scan_esc(p)     ((((p)[1] == '\0')?(p++):(p+=2)),p)
  97
  98 const char *CONF_version="CONF" OPENSSL_VERSION_PTEXT;
  99
 100 LHASH *CONF_load(LHASH *h, char *file, long *line)
 101         {
 102         LHASH *ret=NULL;
 103         FILE *in=NULL;
 104 #define BUFSIZE 512
 105         char btmp[16];
 106         int bufnum=0,i,ii;
 107         BUF_MEM *buff=NULL;
 108         char *s,*p,*end;
 109         int again,n;
 110         long eline=0;
 111         CONF_VALUE *v=NULL,*vv,*tv;
 112         CONF_VALUE *sv=NULL;
 113         char *section=NULL,*buf;
 114         STACK *section_sk=NULL,*ts;
 115         char *start,*psection,*pname;
 116
 117         if ((buff=BUF_MEM_new()) == NULL)
 118                 {
 119                 CONFerr(CONF_F_CONF_LOAD,ERR_R_BUF_LIB);
 120                 goto err;
 121                 }
 122
 123         in=fopen(file,"rb");
 124         if (in == NULL)
 125                 {
 126                 SYSerr(SYS_F_FOPEN,get_last_sys_error());
 127                 ERR_set_error_data(BUF_strdup(file),
 128                         ERR_TXT_MALLOCED|ERR_TXT_STRING);
 129                 CONFerr(CONF_F_CONF_LOAD,ERR_R_SYS_LIB);
 130                 goto err;
 131                 }
 132
 133         section=(char *)Malloc(10);
 134         if (section == NULL)
 135                 {
 136                 CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
 137                 goto err;
 138                 }
 139         strcpy(section,"default");
 140
 141         if (h == NULL)
 142                 {
 143                 if ((ret=lh_new(hash,cmp)) == NULL)
 144                         {
 145                         CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
 146                         goto err;
 147                         }
 148                 }
 149         else
 150                 ret=h;
 151
 152         sv=new_section(ret,section);
 153         if (sv == NULL)
 154                 {
 155                 CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
 156                 goto err;
 157                 }
 158         section_sk=(STACK *)sv->value;
 159
 160         bufnum=0;
 161         for (;;)
 162                 {
 163                 again=0;
 164                 if (!BUF_MEM_grow(buff,bufnum+BUFSIZE))
 165                         {
 166                         CONFerr(CONF_F_CONF_LOAD,ERR_R_BUF_LIB);
 167                         goto err;
 168                         }
 169                 p= &(buff->data[bufnum]);
 170                 *p='\0';
 171                 fgets(p,BUFSIZE-1,in);
 172                 p[BUFSIZE-1]='\0';
 173                 ii=i=strlen(p);
 174                 if (i == 0) break;
 175                 while (i > 0)
 176                         {
 177                         if ((p[i-1] != '\r') && (p[i-1] != '\n'))
 178                                 break;
 179                         else
 180                                 i--;
 181                         }
 182                 /* we removed some trailing stuff so there is a new
 183                  * line on the end. */
 184                 if (i == ii)
 185                         again=1; /* long line */
 186                 else
 187                         {
 188                         p[i]='\0';
 189                         eline++; /* another input line */
 190                         }
 191
 192                 /* we now have a line with trailing \r\n removed */
 193
 194                 /* i is the number of bytes */
 195                 bufnum+=i;
 196
 197                 v=NULL;
 198                 /* check for line continuation */
 199                 if (bufnum >= 1)
 200                         {
 201                         /* If we have bytes and the last char '\\' and
 202                          * second last char is not '\\' */
 203                         p= &(buff->data[bufnum-1]);
 204                         if (    IS_ESC(p[0]) &&
 205                                 ((bufnum <= 1) || !IS_ESC(p[-1])))
 206                                 {
 207                                 bufnum--;
 208                                 again=1;
 209                                 }
 210                         }
 211                 if (again) continue;
 212                 bufnum=0;
 213                 buf=buff->data;
 214
 215                 clear_comments(buf);
 216                 n=strlen(buf);
 217                 s=eat_ws(buf);
 218                 if (IS_EOF(*s)) continue; /* blank line */
 219                 if (*s == '[')
 220                         {
 221                         char *ss;
 222
 223                         s++;
 224                         start=eat_ws(s);
 225                         ss=start;
 226 again:
 227                         end=eat_alpha_numeric(ss);
 228                         p=eat_ws(end);
 229                         if (*p != ']')
 230                                 {
 231                                 if (*p != '\0')
 232                                         {
 233                                         ss=p;
 234                                         goto again;
 235                                         }
 236                                 CONFerr(CONF_F_CONF_LOAD,CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
 237                                 goto err;
 238                                 }
 239                         *end='\0';
 240                         if (!str_copy(ret,NULL,&section,start)) goto err;
 241                         if ((sv=get_section(ret,section)) == NULL)
 242                                 sv=new_section(ret,section);
 243                         if (sv == NULL)
 244                                 {
 245                                 CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
 246                                 goto err;
 247                                 }
 248                         section_sk=(STACK *)sv->value;
 249                         continue;
 250                         }
 251                 else
 252                         {
 253                         pname=s;
 254                         psection=NULL;
 255                         end=eat_alpha_numeric(s);
 256                         if ((end[0] == ':') && (end[1] == ':'))
 257                                 {
 258                                 *end='\0';
 259                                 end+=2;
 260                                 psection=pname;
 261                                 pname=end;
 262                                 end=eat_alpha_numeric(end);
 263                                 }
 264                         p=eat_ws(end);
 265                         if (*p != '=')
 266                                 {
 267                                 CONFerr(CONF_F_CONF_LOAD,CONF_R_MISSING_EQUAL_SIGN);
 268                                 goto err;
 269                                 }
 270                         *end='\0';
 271                         p++;
 272                         start=eat_ws(p);
 273                         while (!IS_EOF(*p))
 274                                 p++;
 275                         p--;
 276                         while ((p != start) && (IS_WS(*p)))
 277                                 p--;
 278                         p++;
 279                         *p='\0';
 280
 281                         if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
 282                                 {
 283                                 CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
 284                                 goto err;
 285                                 }
 286                         if (psection == NULL) psection=section;
 287                         v->name=(char *)Malloc(strlen(pname)+1);
 288                         v->value=NULL;
 289                         if (v->name == NULL)
 290                                 {
 291                                 CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
 292                                 goto err;
 293                                 }
 294                         strcpy(v->name,pname);
 295                         if (!str_copy(ret,psection,&(v->value),start)) goto err;
 296
 297                         if (strcmp(psection,section) != 0)
 298                                 {
 299                                 if ((tv=get_section(ret,psection))
 300                                         == NULL)
 301                                         tv=new_section(ret,psection);
 302                                 if (tv == NULL)
 303                                         {
 304                                         CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
 305                                         goto err;
 306                                         }
 307                                 ts=(STACK *)tv->value;
 308                                 }
 309                         else
 310                                 {
 311                                 tv=sv;
 312                                 ts=section_sk;
 313                                 }
 314                         v->section=tv->section;
 315                         if (!sk_push(ts,(char *)v))
 316                                 {
 317                                 CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
 318                                 goto err;
 319                                 }
 320                         vv=(CONF_VALUE *)lh_insert(ret,(char *)v);
 321                         if (vv != NULL)
 322                                 {
 323                                 sk_delete_ptr(ts,(char *)vv);
 324                                 Free(vv->name);
 325                                 Free(vv->value);
 326                                 Free(vv);
 327                                 }
 328                         v=NULL;
 329                         }
 330                 }
 331         if (buff != NULL) BUF_MEM_free(buff);
 332         if (section != NULL) Free(section);
 333         if (in != NULL) fclose(in);
 334         return(ret);
 335 err:
 336         if (buff != NULL) BUF_MEM_free(buff);
 337         if (section != NULL) Free(section);
 338         if (line != NULL) *line=eline;
 339         sprintf(btmp,"%ld",eline);
 340         ERR_add_error_data(2,"line ",btmp);
 341         if (in != NULL) fclose(in);
 342         if ((h != ret) && (ret != NULL)) CONF_free(ret);
 343         if (v != NULL)
 344                 {
 345                 if (v->name != NULL) Free(v->name);
 346                 if (v->value != NULL) Free(v->value);
 347                 if (v != NULL) Free(v);
 348                 }
 349         return(NULL);
 350         }
 351
 352 char *CONF_get_string(LHASH *conf, char *section, char *name)
 353         {
 354         CONF_VALUE *v,vv;
 355         char *p;
 356
 357         if (name == NULL) return(NULL);
 358         if (conf != NULL)
 359                 {
 360                 if (section != NULL)
 361                         {
 362                         vv.name=name;
 363                         vv.section=section;
 364                         v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
 365                         if (v != NULL) return(v->value);
 366                         if (strcmp(section,"ENV") == 0)
 367                                 {
 368                                 p=Getenv(name);
 369                                 if (p != NULL) return(p);
 370                                 }
 371                         }
 372                 vv.section=BUF_strdup("default");
 373                 vv.name=name;
 374                 v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
 375                 if (v != NULL)
 376                         return(v->value);
 377                 else
 378                         return(NULL);
 379                 }
 380         else
 381                 return(Getenv(name));
 382         }
 383
 384 static CONF_VALUE *get_section(LHASH *conf, char *section)
 385         {
 386         CONF_VALUE *v,vv;
 387
 388         if ((conf == NULL) || (section == NULL)) return(NULL);
 389         vv.name=NULL;
 390         vv.section=section;
 391         v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
 392         return(v);
 393         }
 394
 395 STACK *CONF_get_section(LHASH *conf, char *section)
 396         {
 397         CONF_VALUE *v;
 398
 399         v=get_section(conf,section);
 400         if (v != NULL)
 401                 return((STACK *)v->value);
 402         else
 403                 return(NULL);
 404         }
 405
 406 long CONF_get_number(LHASH *conf, char *section, char *name)
 407         {
 408         char *str;
 409         long ret=0;
 410
 411         str=CONF_get_string(conf,section,name);
 412         if (str == NULL) return(0);
 413         for (;;)
 414                 {
 415                 if (IS_NUMER(*str))
 416                         ret=ret*10+(*str -'0');
 417                 else
 418                         return(ret);
 419                 str++;
 420                 }
 421         }
 422
 423 void CONF_free(LHASH *conf)
 424         {
 425         if (conf == NULL) return;
 426
 427         conf->down_load=0;      /* evil thing to make sure the 'Free()'
 428                                  * works as expected */
 429         lh_doall_arg(conf,(void (*)())value_free_hash,(char *)conf);
 430
 431         /* We now have only 'section' entries in the hash table.
 432          * Due to problems with */
 433
 434         lh_doall_arg(conf,(void (*)())value_free_stack,(char *)conf);
 435         lh_free(conf);
 436         }
 437
 438 static void value_free_hash(CONF_VALUE *a, LHASH *conf)
 439         {
 440         if (a->name != NULL)
 441                 {
 442                 a=(CONF_VALUE *)lh_delete(conf,(char *)a);
 443                 }
 444         }
 445
 446 static void value_free_stack(CONF_VALUE *a, LHASH *conf)
 447         {
 448         CONF_VALUE *vv;
 449         STACK *sk;
 450         int i;
 451
 452         if (a->name != NULL) return;
 453
 454         sk=(STACK *)a->value;
 455         for (i=sk_num(sk)-1; i>=0; i--)
 456                 {
 457                 vv=(CONF_VALUE *)sk_value(sk,i);
 458                 Free(vv->value);
 459                 Free(vv->name);
 460                 Free(vv);
 461                 }
 462         if (sk != NULL) sk_free(sk);
 463         Free(a->section);
 464         Free(a);
 465         }
 466
 467 static void clear_comments(char *p)
 468         {
 469         char *to;
 470
 471         to=p;
 472         for (;;)
 473                 {
 474                 if (IS_COMMENT(*p))
 475                         {
 476                         *p='\0';
 477                         return;
 478                         }
 479                 if (IS_QUOTE(*p))
 480                         {
 481                         p=scan_quote(p);
 482                         continue;
 483                         }
 484                 if (IS_ESC(*p))
 485                         {
 486                         p=scan_esc(p);
 487                         continue;
 488                         }
 489                 if (IS_EOF(*p))
 490                         return;
 491                 else
 492                         p++;
 493                 }
 494         }
 495
 496 static int str_copy(LHASH *conf, char *section, char **pto, char *from)
 497         {
 498         int q,r,rr=0,to=0,len=0;
 499         char *s,*e,*rp,*p,*rrp,*np,*cp,v;
 500         BUF_MEM *buf;
 501
 502         if ((buf=BUF_MEM_new()) == NULL) return(0);
 503
 504         len=strlen(from)+1;
 505         if (!BUF_MEM_grow(buf,len)) goto err;
 506
 507         for (;;)
 508                 {
 509                 if (IS_QUOTE(*from))
 510                         {
 511                         q= *from;
 512                         from++;
 513                         while ((*from != '\0') && (*from != q))
 514                                 {
 515                                 if (*from == '\\')
 516                                         {
 517                                         from++;
 518                                         if (*from == '\0') break;
 519                                         }
 520                                 buf->data[to++]= *(from++);
 521                                 }
 522                         }
 523                 else if (*from == '\\')
 524                         {
 525                         from++;
 526                         v= *(from++);
 527                         if (v == '\0') break;
 528                         else if (v == 'r') v='\r';
 529                         else if (v == 'n') v='\n';
 530                         else if (v == 'b') v='\b';
 531                         else if (v == 't') v='\t';
 532                         buf->data[to++]= v;
 533                         }
 534                 else if (*from == '\0')
 535                         break;
 536                 else if (*from == '$')
 537                         {
 538                         /* try to expand it */
 539                         rrp=NULL;
 540                         s= &(from[1]);
 541                         if (*s == '{')
 542                                 q='}';
 543                         else if (*s == '(')
 544                                 q=')';
 545                         else q=0;
 546
 547                         if (q) s++;
 548                         cp=section;
 549                         e=np=s;
 550                         while (IS_ALPHA_NUMERIC(*e))
 551                                 e++;
 552                         if ((e[0] == ':') && (e[1] == ':'))
 553                                 {
 554                                 cp=np;
 555                                 rrp=e;
 556                                 rr= *e;
 557                                 *rrp='\0';
 558                                 e+=2;
 559                                 np=e;
 560                                 while (IS_ALPHA_NUMERIC(*e))
 561                                         e++;
 562                                 }
 563                         r= *e;
 564                         *e='\0';
 565                         rp=e;
 566                         if (q)
 567                                 {
 568                                 if (r != q)
 569                                         {
 570                                         CONFerr(CONF_F_STR_COPY,CONF_R_NO_CLOSE_BRACE);
 571                                         goto err;
 572                                         }
 573                                 e++;
 574                                 }
 575                         /* So at this point we have
 576                          * ns which is the start of the name string which is
 577                          *   '\0' terminated.
 578                          * cs which is the start of the section string which is
 579                          *   '\0' terminated.
 580                          * e is the 'next point after'.
 581                          * r and s are the chars replaced by the '\0'
 582                          * rp and sp is where 'r' and 's' came from.
 583                          */
 584                         p=CONF_get_string(conf,cp,np);
 585                         if (rrp != NULL) *rrp=rr;
 586                         *rp=r;
 587                         if (p == NULL)
 588                                 {
 589                                 CONFerr(CONF_F_STR_COPY,CONF_R_VARIABLE_HAS_NO_VALUE);
 590                                 goto err;
 591                                 }
 592                         BUF_MEM_grow(buf,(strlen(p)+len-(e-from)));
 593                         while (*p)
 594                                 buf->data[to++]= *(p++);
 595                         from=e;
 596                         }
 597                 else
 598                         buf->data[to++]= *(from++);
 599                 }
 600         buf->data[to]='\0';
 601         if (*pto != NULL) Free(*pto);
 602         *pto=buf->data;
 603         Free(buf);
 604         return(1);
 605 err:
 606         if (buf != NULL) BUF_MEM_free(buf);
 607         return(0);
 608         }
 609
 610 static char *eat_ws(char *p)
 611         {
 612         while (IS_WS(*p) && (!IS_EOF(*p)))
 613                 p++;
 614         return(p);
 615         }
 616
 617 static char *eat_alpha_numeric(char *p)
 618         {
 619         for (;;)
 620                 {
 621                 if (IS_ESC(*p))
 622                         {
 623                         p=scan_esc(p);
 624                         continue;
 625                         }
 626                 if (!IS_ALPHA_NUMERIC_PUNCT(*p))
 627                         return(p);
 628                 p++;
 629                 }
 630         }
 631
 632 static unsigned long hash(CONF_VALUE *v)
 633         {
 634         return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
 635         }
 636
 637 static int cmp(CONF_VALUE *a, CONF_VALUE *b)
 638         {
 639         int i;
 640
 641         if (a->section != b->section)
 642                 {
 643                 i=strcmp(a->section,b->section);
 644                 if (i) return(i);
 645                 }
 646
 647         if ((a->name != NULL) && (b->name != NULL))
 648                 {
 649                 i=strcmp(a->name,b->name);
 650                 return(i);
 651                 }
 652         else if (a->name == b->name)
 653                 return(0);
 654         else
 655                 return((a->name == NULL)?-1:1);
 656         }
 657
 658 static char *scan_quote(char *p)
 659         {
 660         int q= *p;
 661
 662         p++;
 663         while (!(IS_EOF(*p)) && (*p != q))
 664                 {
 665                 if (IS_ESC(*p))
 666                         {
 667                         p++;
 668                         if (IS_EOF(*p)) return(p);
 669                         }
 670                 p++;
 671                 }
 672         if (*p == q) p++;
 673         return(p);
 674         }
 675
 676 static CONF_VALUE *new_section(LHASH *conf, char *section)
 677         {
 678         STACK *sk=NULL;
 679         int ok=0,i;
 680         CONF_VALUE *v=NULL,*vv;
 681
 682         if ((sk=sk_new_null()) == NULL)
 683                 goto err;
 684         if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
 685                 goto err;
 686         i=strlen(section)+1;
 687         if ((v->section=(char *)Malloc(i)) == NULL)
 688                 goto err;
 689
 690         memcpy(v->section,section,i);
 691         v->name=NULL;
 692         v->value=(char *)sk;
 693
 694         vv=(CONF_VALUE *)lh_insert(conf,(char *)v);
 695         if (vv != NULL)
 696                 {
 697 #if !defined(NO_STDIO) && !defined(WIN16)
 698                 fprintf(stderr,"internal fault\n");
 699 #endif
 700                 abort();
 701                 }
 702         ok=1;
 703 err:
 704         if (!ok)
 705                 {
 706                 if (sk != NULL) sk_free(sk);
 707                 if (v != NULL) Free(v);
 708                 v=NULL;
 709                 }
 710         return(v);
 711         }