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
TXT_DB_read(BIO * in,int num)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
TXT_DB_get_by_index(TXT_DB * db,int idx,OPENSSL_STRING * value)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
TXT_DB_create_index(TXT_DB * db,int field,int (* qual)(OPENSSL_STRING *),LHASH_HASH_FN_TYPE hash,LHASH_COMP_FN_TYPE cmp)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
TXT_DB_write(BIO * out,TXT_DB * db)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
TXT_DB_insert(TXT_DB * db,OPENSSL_STRING * row)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
TXT_DB_free(TXT_DB * db)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