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