Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/txt_db/txt_db.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 <stdlib.h> |
| 61 | #include <string.h> |
| 62 | #include "cryptlib.h" |
| 63 | #include <openssl/buffer.h> |
| 64 | #include <openssl/txt_db.h> |
| 65 | |
| 66 | #undef BUFSIZE |
| 67 | #define BUFSIZE 512 |
| 68 | |
| 69 | const char TXT_DB_version[]="TXT_DB" OPENSSL_VERSION_PTEXT; |
| 70 | |
| 71 | TXT_DB *TXT_DB_read(BIO *in, int num) |
| 72 | { |
| 73 | TXT_DB *ret=NULL; |
| 74 | int er=1; |
| 75 | int esc=0; |
| 76 | long ln=0; |
| 77 | int i,add,n; |
| 78 | int size=BUFSIZE; |
| 79 | int offset=0; |
| 80 | char *p,*f; |
| 81 | OPENSSL_STRING *pp; |
| 82 | BUF_MEM *buf=NULL; |
| 83 | |
| 84 | if ((buf=BUF_MEM_new()) == NULL) goto err; |
| 85 | if (!BUF_MEM_grow(buf,size)) goto err; |
| 86 | |
| 87 | if ((ret=OPENSSL_malloc(sizeof(TXT_DB))) == NULL) |
| 88 | goto err; |
| 89 | ret->num_fields=num; |
| 90 | ret->index=NULL; |
| 91 | ret->qual=NULL; |
| 92 | if ((ret->data=sk_OPENSSL_PSTRING_new_null()) == NULL) |
| 93 | goto err; |
| 94 | if ((ret->index=OPENSSL_malloc(sizeof(*ret->index)*num)) == NULL) |
| 95 | goto err; |
| 96 | if ((ret->qual=OPENSSL_malloc(sizeof(*(ret->qual))*num)) == NULL) |
| 97 | goto err; |
| 98 | for (i=0; i<num; i++) |
| 99 | { |
| 100 | ret->index[i]=NULL; |
| 101 | ret->qual[i]=NULL; |
| 102 | } |
| 103 | |
| 104 | add=(num+1)*sizeof(char *); |
| 105 | buf->data[size-1]='\0'; |
| 106 | offset=0; |
| 107 | for (;;) |
| 108 | { |
| 109 | if (offset != 0) |
| 110 | { |
| 111 | size+=BUFSIZE; |
| 112 | if (!BUF_MEM_grow_clean(buf,size)) goto err; |
| 113 | } |
| 114 | buf->data[offset]='\0'; |
| 115 | BIO_gets(in,&(buf->data[offset]),size-offset); |
| 116 | ln++; |
| 117 | if (buf->data[offset] == '\0') break; |
| 118 | if ((offset == 0) && (buf->data[0] == '#')) continue; |
| 119 | i=strlen(&(buf->data[offset])); |
| 120 | offset+=i; |
| 121 | if (buf->data[offset-1] != '\n') |
| 122 | continue; |
| 123 | else |
| 124 | { |
| 125 | buf->data[offset-1]='\0'; /* blat the '\n' */ |
| 126 | if (!(p=OPENSSL_malloc(add+offset))) goto err; |
| 127 | offset=0; |
| 128 | } |
| 129 | pp=(char **)p; |
| 130 | p+=add; |
| 131 | n=0; |
| 132 | pp[n++]=p; |
| 133 | i=0; |
| 134 | f=buf->data; |
| 135 | |
| 136 | esc=0; |
| 137 | for (;;) |
| 138 | { |
| 139 | if (*f == '\0') break; |
| 140 | if (*f == '\t') |
| 141 | { |
| 142 | if (esc) |
| 143 | p--; |
| 144 | else |
| 145 | { |
| 146 | *(p++)='\0'; |
| 147 | f++; |
| 148 | if (n >= num) break; |
| 149 | pp[n++]=p; |
| 150 | continue; |
| 151 | } |
| 152 | } |
| 153 | esc=(*f == '\\'); |
| 154 | *(p++)= *(f++); |
| 155 | } |
| 156 | *(p++)='\0'; |
| 157 | if ((n != num) || (*f != '\0')) |
| 158 | { |
| 159 | #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary fix :-( */ |
| 160 | fprintf(stderr,"wrong number of fields on line %ld (looking for field %d, got %d, '%s' left)\n",ln,num,n,f); |
| 161 | #endif |
| 162 | er=2; |
| 163 | goto err; |
| 164 | } |
| 165 | pp[n]=p; |
| 166 | if (!sk_OPENSSL_PSTRING_push(ret->data,pp)) |
| 167 | { |
| 168 | #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary fix :-( */ |
| 169 | fprintf(stderr,"failure in sk_push\n"); |
| 170 | #endif |
| 171 | er=2; |
| 172 | goto err; |
| 173 | } |
| 174 | } |
| 175 | er=0; |
| 176 | err: |
| 177 | BUF_MEM_free(buf); |
| 178 | if (er) |
| 179 | { |
| 180 | #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) |
| 181 | if (er == 1) fprintf(stderr,"OPENSSL_malloc failure\n"); |
| 182 | #endif |
| 183 | if (ret != NULL) |
| 184 | { |
| 185 | if (ret->data != NULL) sk_OPENSSL_PSTRING_free(ret->data); |
| 186 | if (ret->index != NULL) OPENSSL_free(ret->index); |
| 187 | if (ret->qual != NULL) OPENSSL_free(ret->qual); |
| 188 | if (ret != NULL) OPENSSL_free(ret); |
| 189 | } |
| 190 | return(NULL); |
| 191 | } |
| 192 | else |
| 193 | return(ret); |
| 194 | } |
| 195 | |
| 196 | OPENSSL_STRING *TXT_DB_get_by_index(TXT_DB *db, int idx, OPENSSL_STRING *value) |
| 197 | { |
| 198 | OPENSSL_STRING *ret; |
| 199 | LHASH_OF(OPENSSL_STRING) *lh; |
| 200 | |
| 201 | if (idx >= db->num_fields) |
| 202 | { |
| 203 | db->error=DB_ERROR_INDEX_OUT_OF_RANGE; |
| 204 | return(NULL); |
| 205 | } |
| 206 | lh=db->index[idx]; |
| 207 | if (lh == NULL) |
| 208 | { |
| 209 | db->error=DB_ERROR_NO_INDEX; |
| 210 | return(NULL); |
| 211 | } |
| 212 | ret=lh_OPENSSL_STRING_retrieve(lh,value); |
| 213 | db->error=DB_ERROR_OK; |
| 214 | return(ret); |
| 215 | } |
| 216 | |
| 217 | int TXT_DB_create_index(TXT_DB *db, int field, int (*qual)(OPENSSL_STRING *), |
| 218 | LHASH_HASH_FN_TYPE hash, LHASH_COMP_FN_TYPE cmp) |
| 219 | { |
| 220 | LHASH_OF(OPENSSL_STRING) *idx; |
| 221 | OPENSSL_STRING *r; |
| 222 | int i,n; |
| 223 | |
| 224 | if (field >= db->num_fields) |
| 225 | { |
| 226 | db->error=DB_ERROR_INDEX_OUT_OF_RANGE; |
| 227 | return(0); |
| 228 | } |
| 229 | /* FIXME: we lose type checking at this point */ |
| 230 | if ((idx=(LHASH_OF(OPENSSL_STRING) *)lh_new(hash,cmp)) == NULL) |
| 231 | { |
| 232 | db->error=DB_ERROR_MALLOC; |
| 233 | return(0); |
| 234 | } |
| 235 | n=sk_OPENSSL_PSTRING_num(db->data); |
| 236 | for (i=0; i<n; i++) |
| 237 | { |
| 238 | r=sk_OPENSSL_PSTRING_value(db->data,i); |
| 239 | if ((qual != NULL) && (qual(r) == 0)) continue; |
| 240 | if ((r=lh_OPENSSL_STRING_insert(idx,r)) != NULL) |
| 241 | { |
| 242 | db->error=DB_ERROR_INDEX_CLASH; |
| 243 | db->arg1=sk_OPENSSL_PSTRING_find(db->data,r); |
| 244 | db->arg2=i; |
| 245 | lh_OPENSSL_STRING_free(idx); |
| 246 | return(0); |
| 247 | } |
| 248 | } |
| 249 | if (db->index[field] != NULL) lh_OPENSSL_STRING_free(db->index[field]); |
| 250 | db->index[field]=idx; |
| 251 | db->qual[field]=qual; |
| 252 | return(1); |
| 253 | } |
| 254 | |
| 255 | long TXT_DB_write(BIO *out, TXT_DB *db) |
| 256 | { |
| 257 | long i,j,n,nn,l,tot=0; |
| 258 | char *p,**pp,*f; |
| 259 | BUF_MEM *buf=NULL; |
| 260 | long ret= -1; |
| 261 | |
| 262 | if ((buf=BUF_MEM_new()) == NULL) |
| 263 | goto err; |
| 264 | n=sk_OPENSSL_PSTRING_num(db->data); |
| 265 | nn=db->num_fields; |
| 266 | for (i=0; i<n; i++) |
| 267 | { |
| 268 | pp=sk_OPENSSL_PSTRING_value(db->data,i); |
| 269 | |
| 270 | l=0; |
| 271 | for (j=0; j<nn; j++) |
| 272 | { |
| 273 | if (pp[j] != NULL) |
| 274 | l+=strlen(pp[j]); |
| 275 | } |
| 276 | if (!BUF_MEM_grow_clean(buf,(int)(l*2+nn))) goto err; |
| 277 | |
| 278 | p=buf->data; |
| 279 | for (j=0; j<nn; j++) |
| 280 | { |
| 281 | f=pp[j]; |
| 282 | if (f != NULL) |
| 283 | for (;;) |
| 284 | { |
| 285 | if (*f == '\0') break; |
| 286 | if (*f == '\t') *(p++)='\\'; |
| 287 | *(p++)= *(f++); |
| 288 | } |
| 289 | *(p++)='\t'; |
| 290 | } |
| 291 | p[-1]='\n'; |
| 292 | j=p-buf->data; |
| 293 | if (BIO_write(out,buf->data,(int)j) != j) |
| 294 | goto err; |
| 295 | tot+=j; |
| 296 | } |
| 297 | ret=tot; |
| 298 | err: |
| 299 | if (buf != NULL) BUF_MEM_free(buf); |
| 300 | return(ret); |
| 301 | } |
| 302 | |
| 303 | int TXT_DB_insert(TXT_DB *db, OPENSSL_STRING *row) |
| 304 | { |
| 305 | int i; |
| 306 | OPENSSL_STRING *r; |
| 307 | |
| 308 | for (i=0; i<db->num_fields; i++) |
| 309 | { |
| 310 | if (db->index[i] != NULL) |
| 311 | { |
| 312 | if ((db->qual[i] != NULL) && |
| 313 | (db->qual[i](row) == 0)) continue; |
| 314 | r=lh_OPENSSL_STRING_retrieve(db->index[i],row); |
| 315 | if (r != NULL) |
| 316 | { |
| 317 | db->error=DB_ERROR_INDEX_CLASH; |
| 318 | db->arg1=i; |
| 319 | db->arg_row=r; |
| 320 | goto err; |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | /* We have passed the index checks, now just append and insert */ |
| 325 | if (!sk_OPENSSL_PSTRING_push(db->data,row)) |
| 326 | { |
| 327 | db->error=DB_ERROR_MALLOC; |
| 328 | goto err; |
| 329 | } |
| 330 | |
| 331 | for (i=0; i<db->num_fields; i++) |
| 332 | { |
| 333 | if (db->index[i] != NULL) |
| 334 | { |
| 335 | if ((db->qual[i] != NULL) && |
| 336 | (db->qual[i](row) == 0)) continue; |
| 337 | (void)lh_OPENSSL_STRING_insert(db->index[i],row); |
| 338 | } |
| 339 | } |
| 340 | return(1); |
| 341 | err: |
| 342 | return(0); |
| 343 | } |
| 344 | |
| 345 | void TXT_DB_free(TXT_DB *db) |
| 346 | { |
| 347 | int i,n; |
| 348 | char **p,*max; |
| 349 | |
| 350 | if(db == NULL) |
| 351 | return; |
| 352 | |
| 353 | if (db->index != NULL) |
| 354 | { |
| 355 | for (i=db->num_fields-1; i>=0; i--) |
| 356 | if (db->index[i] != NULL) lh_OPENSSL_STRING_free(db->index[i]); |
| 357 | OPENSSL_free(db->index); |
| 358 | } |
| 359 | if (db->qual != NULL) |
| 360 | OPENSSL_free(db->qual); |
| 361 | if (db->data != NULL) |
| 362 | { |
| 363 | for (i=sk_OPENSSL_PSTRING_num(db->data)-1; i>=0; i--) |
| 364 | { |
| 365 | /* check if any 'fields' have been allocated |
| 366 | * from outside of the initial block */ |
| 367 | p=sk_OPENSSL_PSTRING_value(db->data,i); |
| 368 | max=p[db->num_fields]; /* last address */ |
| 369 | if (max == NULL) /* new row */ |
| 370 | { |
| 371 | for (n=0; n<db->num_fields; n++) |
| 372 | if (p[n] != NULL) OPENSSL_free(p[n]); |
| 373 | } |
| 374 | else |
| 375 | { |
| 376 | for (n=0; n<db->num_fields; n++) |
| 377 | { |
| 378 | if (((p[n] < (char *)p) || (p[n] > max)) |
| 379 | && (p[n] != NULL)) |
| 380 | OPENSSL_free(p[n]); |
| 381 | } |
| 382 | } |
| 383 | OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data,i)); |
| 384 | } |
| 385 | sk_OPENSSL_PSTRING_free(db->data); |
| 386 | } |
| 387 | OPENSSL_free(db); |
| 388 | } |