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