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) 85 goto err; 86 if (!BUF_MEM_grow(buf, size)) 87 goto err; 88 89 if ((ret = OPENSSL_malloc(sizeof(TXT_DB))) == NULL) 90 goto err; 91 ret->num_fields = num; 92 ret->index = NULL; 93 ret->qual = NULL; 94 if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL) 95 goto err; 96 if ((ret->index = OPENSSL_malloc(sizeof(*ret->index) * num)) == NULL) 97 goto err; 98 if ((ret->qual = OPENSSL_malloc(sizeof(*(ret->qual)) * num)) == NULL) 99 goto err; 100 for (i = 0; i < num; i++) { 101 ret->index[i] = NULL; 102 ret->qual[i] = NULL; 103 } 104 105 add = (num + 1) * sizeof(char *); 106 buf->data[size - 1] = '\0'; 107 offset = 0; 108 for (;;) { 109 if (offset != 0) { 110 size += BUFSIZE; 111 if (!BUF_MEM_grow_clean(buf, size)) 112 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') 118 break; 119 if ((offset == 0) && (buf->data[0] == '#')) 120 continue; 121 i = strlen(&(buf->data[offset])); 122 offset += i; 123 if (buf->data[offset - 1] != '\n') 124 continue; 125 else { 126 buf->data[offset - 1] = '\0'; /* blat the '\n' */ 127 if (!(p = OPENSSL_malloc(add + offset))) 128 goto err; 129 offset = 0; 130 } 131 pp = (char **)p; 132 p += add; 133 n = 0; 134 pp[n++] = p; 135 i = 0; 136 f = buf->data; 137 138 esc = 0; 139 for (;;) { 140 if (*f == '\0') 141 break; 142 if (*f == '\t') { 143 if (esc) 144 p--; 145 else { 146 *(p++) = '\0'; 147 f++; 148 if (n >= num) 149 break; 150 pp[n++] = p; 151 continue; 152 } 153 } 154 esc = (*f == '\\'); 155 *(p++) = *(f++); 156 } 157 *(p++) = '\0'; 158 if ((n != num) || (*f != '\0')) { 159 #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary 160 * fix :-( */ 161 fprintf(stderr, 162 "wrong number of fields on line %ld (looking for field %d, got %d, '%s' left)\n", 163 ln, num, n, f); 164 #endif 165 OPENSSL_free(pp); 166 er = 2; 167 goto err; 168 } 169 pp[n] = p; 170 if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) { 171 #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) /* temporary 172 * fix :-( */ 173 fprintf(stderr, "failure in sk_push\n"); 174 #endif 175 OPENSSL_free(pp); 176 er = 2; 177 goto err; 178 } 179 } 180 er = 0; 181 err: 182 BUF_MEM_free(buf); 183 if (er) { 184 #if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16) 185 if (er == 1) 186 fprintf(stderr, "OPENSSL_malloc failure\n"); 187 #endif 188 if (ret != NULL) { 189 if (ret->data != NULL) 190 sk_OPENSSL_PSTRING_free(ret->data); 191 if (ret->index != NULL) 192 OPENSSL_free(ret->index); 193 if (ret->qual != NULL) 194 OPENSSL_free(ret->qual); 195 if (ret != NULL) 196 OPENSSL_free(ret); 197 } 198 return (NULL); 199 } else 200 return (ret); 201 } 202 203 OPENSSL_STRING *TXT_DB_get_by_index(TXT_DB *db, int idx, 204 OPENSSL_STRING *value) 205 { 206 OPENSSL_STRING *ret; 207 LHASH_OF(OPENSSL_STRING) *lh; 208 209 if (idx >= db->num_fields) { 210 db->error = DB_ERROR_INDEX_OUT_OF_RANGE; 211 return (NULL); 212 } 213 lh = db->index[idx]; 214 if (lh == NULL) { 215 db->error = DB_ERROR_NO_INDEX; 216 return (NULL); 217 } 218 ret = lh_OPENSSL_STRING_retrieve(lh, value); 219 db->error = DB_ERROR_OK; 220 return (ret); 221 } 222 223 int TXT_DB_create_index(TXT_DB *db, int field, int (*qual) (OPENSSL_STRING *), 224 LHASH_HASH_FN_TYPE hash, LHASH_COMP_FN_TYPE cmp) 225 { 226 LHASH_OF(OPENSSL_STRING) *idx; 227 OPENSSL_STRING *r, *k; 228 int i, n; 229 230 if (field >= db->num_fields) { 231 db->error = DB_ERROR_INDEX_OUT_OF_RANGE; 232 return (0); 233 } 234 /* FIXME: we lose type checking at this point */ 235 if ((idx = (LHASH_OF(OPENSSL_STRING) *)lh_new(hash, cmp)) == NULL) { 236 db->error = DB_ERROR_MALLOC; 237 return (0); 238 } 239 n = sk_OPENSSL_PSTRING_num(db->data); 240 for (i = 0; i < n; i++) { 241 r = sk_OPENSSL_PSTRING_value(db->data, i); 242 if ((qual != NULL) && (qual(r) == 0)) 243 continue; 244 if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) { 245 db->error = DB_ERROR_INDEX_CLASH; 246 db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k); 247 db->arg2 = i; 248 lh_OPENSSL_STRING_free(idx); 249 return (0); 250 } 251 if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) { 252 db->error = DB_ERROR_MALLOC; 253 lh_OPENSSL_STRING_free(idx); 254 return (0); 255 } 256 } 257 if (db->index[field] != NULL) 258 lh_OPENSSL_STRING_free(db->index[field]); 259 db->index[field] = idx; 260 db->qual[field] = qual; 261 return (1); 262 } 263 264 long TXT_DB_write(BIO *out, TXT_DB *db) 265 { 266 long i, j, n, nn, l, tot = 0; 267 char *p, **pp, *f; 268 BUF_MEM *buf = NULL; 269 long ret = -1; 270 271 if ((buf = BUF_MEM_new()) == NULL) 272 goto err; 273 n = sk_OPENSSL_PSTRING_num(db->data); 274 nn = db->num_fields; 275 for (i = 0; i < n; i++) { 276 pp = sk_OPENSSL_PSTRING_value(db->data, i); 277 278 l = 0; 279 for (j = 0; j < nn; j++) { 280 if (pp[j] != NULL) 281 l += strlen(pp[j]); 282 } 283 if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn))) 284 goto err; 285 286 p = buf->data; 287 for (j = 0; j < nn; j++) { 288 f = pp[j]; 289 if (f != NULL) 290 for (;;) { 291 if (*f == '\0') 292 break; 293 if (*f == '\t') 294 *(p++) = '\\'; 295 *(p++) = *(f++); 296 } 297 *(p++) = '\t'; 298 } 299 p[-1] = '\n'; 300 j = p - buf->data; 301 if (BIO_write(out, buf->data, (int)j) != j) 302 goto err; 303 tot += j; 304 } 305 ret = tot; 306 err: 307 if (buf != NULL) 308 BUF_MEM_free(buf); 309 return (ret); 310 } 311 312 int TXT_DB_insert(TXT_DB *db, OPENSSL_STRING *row) 313 { 314 int i; 315 OPENSSL_STRING *r; 316 317 for (i = 0; i < db->num_fields; i++) { 318 if (db->index[i] != NULL) { 319 if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0)) 320 continue; 321 r = lh_OPENSSL_STRING_retrieve(db->index[i], row); 322 if (r != NULL) { 323 db->error = DB_ERROR_INDEX_CLASH; 324 db->arg1 = i; 325 db->arg_row = r; 326 goto err; 327 } 328 } 329 } 330 331 for (i = 0; i < db->num_fields; i++) { 332 if (db->index[i] != NULL) { 333 if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0)) 334 continue; 335 (void)lh_OPENSSL_STRING_insert(db->index[i], row); 336 if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL) 337 goto err1; 338 } 339 } 340 if (!sk_OPENSSL_PSTRING_push(db->data, row)) 341 goto err1; 342 return (1); 343 344 err1: 345 db->error = DB_ERROR_MALLOC; 346 while (i-- > 0) { 347 if (db->index[i] != NULL) { 348 if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0)) 349 continue; 350 (void)lh_OPENSSL_STRING_delete(db->index[i], row); 351 } 352 } 353 err: 354 return (0); 355 } 356 357 void TXT_DB_free(TXT_DB *db) 358 { 359 int i, n; 360 char **p, *max; 361 362 if (db == NULL) 363 return; 364 365 if (db->index != NULL) { 366 for (i = db->num_fields - 1; i >= 0; i--) 367 if (db->index[i] != NULL) 368 lh_OPENSSL_STRING_free(db->index[i]); 369 OPENSSL_free(db->index); 370 } 371 if (db->qual != NULL) 372 OPENSSL_free(db->qual); 373 if (db->data != NULL) { 374 for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) { 375 /* 376 * check if any 'fields' have been allocated from outside of the 377 * initial block 378 */ 379 p = sk_OPENSSL_PSTRING_value(db->data, i); 380 max = p[db->num_fields]; /* last address */ 381 if (max == NULL) { /* new row */ 382 for (n = 0; n < db->num_fields; n++) 383 if (p[n] != NULL) 384 OPENSSL_free(p[n]); 385 } else { 386 for (n = 0; n < db->num_fields; n++) { 387 if (((p[n] < (char *)p) || (p[n] > max)) 388 && (p[n] != NULL)) 389 OPENSSL_free(p[n]); 390 } 391 } 392 OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i)); 393 } 394 sk_OPENSSL_PSTRING_free(db->data); 395 } 396 OPENSSL_free(db); 397 } 398