/src/openssl/crypto/txt_db/txt_db.c

Source
/*
 * Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/txt_db.h>

#undef BUFSIZE
#define BUFSIZE 512

TXT_DB *TXT_DB_read(BIO *in, int num)
{
    TXT_DB *ret = NULL;
    int esc = 0;
    int i, add, n;
    int size = BUFSIZE;
    int offset = 0;
    char *p, *f;
    OPENSSL_STRING *pp;
    BUF_MEM *buf = NULL;

    if ((buf = BUF_MEM_new()) == NULL)
        goto err;
    if (!BUF_MEM_grow(buf, size))
        goto err;

    if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
        goto err;
    ret->num_fields = num;
    ret->index = NULL;
    ret->qual = NULL;
    if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
        goto err;
    if ((ret->index = OPENSSL_malloc_array(num, sizeof(*ret->index))) == NULL)
        goto err;
    if ((ret->qual = OPENSSL_malloc_array(num, sizeof(*(ret->qual)))) == NULL)
        goto err;
    for (i = 0; i < num; i++) {
        ret->index[i] = NULL;
        ret->qual[i] = NULL;
    }

    add = (num + 1) * sizeof(char *);
    buf->data[size - 1] = '\0';
    offset = 0;
    for (;;) {
        if (offset != 0) {
            size += BUFSIZE;
            if (!BUF_MEM_grow_clean(buf, size))
                goto err;
        }
        buf->data[offset] = '\0';
        BIO_gets(in, &(buf->data[offset]), size - offset);
        if (buf->data[offset] == '\0')
            break;
        if ((offset == 0) && (buf->data[0] == '#'))
            continue;
        i = (int)strlen(&(buf->data[offset]));
        offset += i;
        if (buf->data[offset - 1] != '\n')
            continue;
        else {
            buf->data[offset - 1] = '\0'; /* blat the '\n' */
            if ((p = OPENSSL_malloc(add + offset)) == NULL)
                goto err;
            offset = 0;
        }
        pp = (char **)p;
        p += add;
        n = 0;
        pp[n++] = p;
        f = buf->data;

        esc = 0;
        for (;;) {
            if (*f == '\0')
                break;
            if (*f == '\t') {
                if (esc)
                    p--;
                else {
                    *(p++) = '\0';
                    f++;
                    if (n >= num)
                        break;
                    pp[n++] = p;
                    continue;
                }
            }
            esc = (*f == '\\');
            *(p++) = *(f++);
        }
        *(p++) = '\0';
        if ((n != num) || (*f != '\0')) {
            OPENSSL_free(pp);
            ret->error = DB_ERROR_WRONG_NUM_FIELDS;
            goto err;
        }
        pp[n] = p;
        if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
            OPENSSL_free(pp);
            goto err;
        }
    }
    BUF_MEM_free(buf);
    return ret;
 err:
    BUF_MEM_free(buf);
    if (ret != NULL) {
        sk_OPENSSL_PSTRING_free(ret->data);
        OPENSSL_free(ret->index);
        OPENSSL_free(ret->qual);
        OPENSSL_free(ret);
    }
    return NULL;
}

OPENSSL_STRING *TXT_DB_get_by_index(TXT_DB *db, int idx,
                                    OPENSSL_STRING *value)
{
    OPENSSL_STRING *ret;
    LHASH_OF(OPENSSL_STRING) *lh;

    if (idx >= db->num_fields) {
        db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
        return NULL;
    }
    lh = db->index[idx];
    if (lh == NULL) {
        db->error = DB_ERROR_NO_INDEX;
        return NULL;
    }
    ret = lh_OPENSSL_STRING_retrieve(lh, value);
    db->error = DB_ERROR_OK;
    return ret;
}

int TXT_DB_create_index(TXT_DB *db, int field, int (*qual) (OPENSSL_STRING *),
                        OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
{
    LHASH_OF(OPENSSL_STRING) *idx;
    OPENSSL_STRING *r, *k;
    int i, n;

    if (field >= db->num_fields) {
        db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
        return 0;
    }
    /* FIXME: we lose type checking at this point */
    if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
        db->error = DB_ERROR_MALLOC;
        return 0;
    }
    n = sk_OPENSSL_PSTRING_num(db->data);
    for (i = 0; i < n; i++) {
        r = sk_OPENSSL_PSTRING_value(db->data, i);
        if ((qual != NULL) && (qual(r) == 0))
            continue;
        if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
            db->error = DB_ERROR_INDEX_CLASH;
            db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
            db->arg2 = i;
            lh_OPENSSL_STRING_free(idx);
            return 0;
        }
        if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
            db->error = DB_ERROR_MALLOC;
            lh_OPENSSL_STRING_free(idx);
            return 0;
        }
    }
    lh_OPENSSL_STRING_free(db->index[field]);
    db->index[field] = idx;
    db->qual[field] = qual;
    return 1;
}

long TXT_DB_write(BIO *out, TXT_DB *db)
{
    long i, j, n, nn, l, tot = 0;
    char *p, **pp, *f;
    BUF_MEM *buf = NULL;
    long ret = -1;

    if ((buf = BUF_MEM_new()) == NULL)
        goto err;
    n = sk_OPENSSL_PSTRING_num(db->data);
    nn = db->num_fields;
    for (i = 0; i < n; i++) {
        pp = sk_OPENSSL_PSTRING_value(db->data, i);

        l = 0;
        for (j = 0; j < nn; j++) {
            if (pp[j] != NULL)
                l += (long)strlen(pp[j]);
        }
        if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
            goto err;

        p = buf->data;
        for (j = 0; j < nn; j++) {
            f = pp[j];
            if (f != NULL)
                for (;;) {
                    if (*f == '\0')
                        break;
                    if (*f == '\t')
                        *(p++) = '\\';
                    *(p++) = *(f++);
                }
            *(p++) = '\t';
        }
        p[-1] = '\n';
        j = (long)(p - buf->data);
        if (BIO_write(out, buf->data, (int)j) != j)
            goto err;
        tot += j;
    }
    ret = tot;
 err:
    BUF_MEM_free(buf);
    return ret;
}

int TXT_DB_insert(TXT_DB *db, OPENSSL_STRING *row)
{
    int i;
    OPENSSL_STRING *r;

    for (i = 0; i < db->num_fields; i++) {
        if (db->index[i] != NULL) {
            if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
                continue;
            r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
            if (r != NULL) {
                db->error = DB_ERROR_INDEX_CLASH;
                db->arg1 = i;
                db->arg_row = r;
                goto err;
            }
        }
    }

    for (i = 0; i < db->num_fields; i++) {
        if (db->index[i] != NULL) {
            if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
                continue;
            (void)lh_OPENSSL_STRING_insert(db->index[i], row);
            if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
                goto err1;
        }
    }
    if (!sk_OPENSSL_PSTRING_push(db->data, row))
        goto err1;
    return 1;

 err1:
    db->error = DB_ERROR_MALLOC;
    while (i-- > 0) {
        if (db->index[i] != NULL) {
            if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
                continue;
            (void)lh_OPENSSL_STRING_delete(db->index[i], row);
        }
    }
 err:
    return 0;
}

void TXT_DB_free(TXT_DB *db)
{
    int i, n;
    char **p, *max;

    if (db == NULL)
        return;
    if (db->index != NULL) {
        for (i = db->num_fields - 1; i >= 0; i--)
            lh_OPENSSL_STRING_free(db->index[i]);
        OPENSSL_free(db->index);
    }
    OPENSSL_free(db->qual);
    if (db->data != NULL) {
        for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
            /*
             * check if any 'fields' have been allocated from outside of the
             * initial block
             */
            p = sk_OPENSSL_PSTRING_value(db->data, i);
            max = p[db->num_fields]; /* last address */
            if (max == NULL) {  /* new row */
                for (n = 0; n < db->num_fields; n++)
                    OPENSSL_free(p[n]);
            } else {
                for (n = 0; n < db->num_fields; n++) {
                    if (((p[n] < (char *)p) || (p[n] > max)))
                        OPENSSL_free(p[n]);
                }
            }
            OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
        }
        sk_OPENSSL_PSTRING_free(db->data);
    }
    OPENSSL_free(db);
}

Coverage Report

Created: 2025-10-28 06:56

Line	Count	Source
1		/*
2		* Copyright 1995-2025 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		#include <stdio.h>
11		#include <stdlib.h>
12		#include <string.h>
13		#include "internal/cryptlib.h"
14		#include <openssl/buffer.h>
15		#include <openssl/txt_db.h>
16
17		#undef BUFSIZE
18	0	#define BUFSIZE 512
19
20		TXT_DB TXT_DB_read(BIO in, int num)
21	0	{
22	0	TXT_DB *ret = NULL;
23	0	int esc = 0;
24	0	int i, add, n;
25	0	int size = BUFSIZE;
26	0	int offset = 0;
27	0	char p, f;
28	0	OPENSSL_STRING *pp;
29	0	BUF_MEM *buf = NULL;
30
31	0	if ((buf = BUF_MEM_new()) == NULL)
32	0	goto err;
33	0	if (!BUF_MEM_grow(buf, size))
34	0	goto err;
35
36	0	if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
37	0	goto err;
38	0	ret->num_fields = num;
39	0	ret->index = NULL;
40	0	ret->qual = NULL;
41	0	if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
42	0	goto err;
43	0	if ((ret->index = OPENSSL_malloc_array(num, sizeof(*ret->index))) == NULL)
44	0	goto err;
45	0	if ((ret->qual = OPENSSL_malloc_array(num, sizeof(*(ret->qual)))) == NULL)
46	0	goto err;
47	0	for (i = 0; i < num; i++) {
48	0	ret->index[i] = NULL;
49	0	ret->qual[i] = NULL;
50	0	}
51
52	0	add = (num + 1) * sizeof(char *);
53	0	buf->data[size - 1] = '\0';
54	0	offset = 0;
55	0	for (;;) {
56	0	if (offset != 0) {
57	0	size += BUFSIZE;
58	0	if (!BUF_MEM_grow_clean(buf, size))
59	0	goto err;
60	0	}
61	0	buf->data[offset] = '\0';
62	0	BIO_gets(in, &(buf->data[offset]), size - offset);
63	0	if (buf->data[offset] == '\0')
64	0	break;
65	0	if ((offset == 0) && (buf->data[0] == '#'))
66	0	continue;
67	0	i = (int)strlen(&(buf->data[offset]));
68	0	offset += i;
69	0	if (buf->data[offset - 1] != '\n')
70	0	continue;
71	0	else {
72	0	buf->data[offset - 1] = '\0'; /* blat the '\n' */
73	0	if ((p = OPENSSL_malloc(add + offset)) == NULL)
74	0	goto err;
75	0	offset = 0;
76	0	}
77	0	pp = (char **)p;
78	0	p += add;
79	0	n = 0;
80	0	pp[n++] = p;
81	0	f = buf->data;
82
83	0	esc = 0;
84	0	for (;;) {
85	0	if (*f == '\0')
86	0	break;
87	0	if (*f == '\t') {
88	0	if (esc)
89	0	p--;
90	0	else {
91	0	*(p++) = '\0';
92	0	f++;
93	0	if (n >= num)
94	0	break;
95	0	pp[n++] = p;
96	0	continue;
97	0	}
98	0	}
99	0	esc = (*f == '\\');
100	0	(p++) = (f++);
101	0	}
102	0	*(p++) = '\0';
103	0	if ((n != num) \|\| (*f != '\0')) {
104	0	OPENSSL_free(pp);
105	0	ret->error = DB_ERROR_WRONG_NUM_FIELDS;
106	0	goto err;
107	0	}
108	0	pp[n] = p;
109	0	if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
110	0	OPENSSL_free(pp);
111	0	goto err;
112	0	}
113	0	}
114	0	BUF_MEM_free(buf);
115	0	return ret;
116	0	err:
117	0	BUF_MEM_free(buf);
118	0	if (ret != NULL) {
119	0	sk_OPENSSL_PSTRING_free(ret->data);
120	0	OPENSSL_free(ret->index);
121	0	OPENSSL_free(ret->qual);
122	0	OPENSSL_free(ret);
123	0	}
124	0	return NULL;
125	0	}
126
127		OPENSSL_STRING TXT_DB_get_by_index(TXT_DB db, int idx,
128		OPENSSL_STRING *value)
129	0	{
130	0	OPENSSL_STRING *ret;
131	0	LHASH_OF(OPENSSL_STRING) *lh;
132
133	0	if (idx >= db->num_fields) {
134	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
135	0	return NULL;
136	0	}
137	0	lh = db->index[idx];
138	0	if (lh == NULL) {
139	0	db->error = DB_ERROR_NO_INDEX;
140	0	return NULL;
141	0	}
142	0	ret = lh_OPENSSL_STRING_retrieve(lh, value);
143	0	db->error = DB_ERROR_OK;
144	0	return ret;
145	0	}
146
147		int TXT_DB_create_index(TXT_DB db, int field, int (qual) (OPENSSL_STRING *),
148		OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
149	0	{
150	0	LHASH_OF(OPENSSL_STRING) *idx;
151	0	OPENSSL_STRING r, k;
152	0	int i, n;
153
154	0	if (field >= db->num_fields) {
155	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
156	0	return 0;
157	0	}
158		/* FIXME: we lose type checking at this point */
159	0	if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
160	0	db->error = DB_ERROR_MALLOC;
161	0	return 0;
162	0	}
163	0	n = sk_OPENSSL_PSTRING_num(db->data);
164	0	for (i = 0; i < n; i++) {
165	0	r = sk_OPENSSL_PSTRING_value(db->data, i);
166	0	if ((qual != NULL) && (qual(r) == 0))
167	0	continue;
168	0	if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
169	0	db->error = DB_ERROR_INDEX_CLASH;
170	0	db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
171	0	db->arg2 = i;
172	0	lh_OPENSSL_STRING_free(idx);
173	0	return 0;
174	0	}
175	0	if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
176	0	db->error = DB_ERROR_MALLOC;
177	0	lh_OPENSSL_STRING_free(idx);
178	0	return 0;
179	0	}
180	0	}
181	0	lh_OPENSSL_STRING_free(db->index[field]);
182	0	db->index[field] = idx;
183	0	db->qual[field] = qual;
184	0	return 1;
185	0	}
186
187		long TXT_DB_write(BIO out, TXT_DB db)
188	0	{
189	0	long i, j, n, nn, l, tot = 0;
190	0	char p, pp, f;
191	0	BUF_MEM *buf = NULL;
192	0	long ret = -1;
193
194	0	if ((buf = BUF_MEM_new()) == NULL)
195	0	goto err;
196	0	n = sk_OPENSSL_PSTRING_num(db->data);
197	0	nn = db->num_fields;
198	0	for (i = 0; i < n; i++) {
199	0	pp = sk_OPENSSL_PSTRING_value(db->data, i);
200
201	0	l = 0;
202	0	for (j = 0; j < nn; j++) {
203	0	if (pp[j] != NULL)
204	0	l += (long)strlen(pp[j]);
205	0	}
206	0	if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
207	0	goto err;
208
209	0	p = buf->data;
210	0	for (j = 0; j < nn; j++) {
211	0	f = pp[j];
212	0	if (f != NULL)
213	0	for (;;) {
214	0	if (*f == '\0')
215	0	break;
216	0	if (*f == '\t')
217	0	*(p++) = '\\';
218	0	(p++) = (f++);
219	0	}
220	0	*(p++) = '\t';
221	0	}
222	0	p[-1] = '\n';
223	0	j = (long)(p - buf->data);
224	0	if (BIO_write(out, buf->data, (int)j) != j)
225	0	goto err;
226	0	tot += j;
227	0	}
228	0	ret = tot;
229	0	err:
230	0	BUF_MEM_free(buf);
231	0	return ret;
232	0	}
233
234		int TXT_DB_insert(TXT_DB db, OPENSSL_STRING row)
235	0	{
236	0	int i;
237	0	OPENSSL_STRING *r;
238
239	0	for (i = 0; i < db->num_fields; i++) {
240	0	if (db->index[i] != NULL) {
241	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
242	0	continue;
243	0	r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
244	0	if (r != NULL) {
245	0	db->error = DB_ERROR_INDEX_CLASH;
246	0	db->arg1 = i;
247	0	db->arg_row = r;
248	0	goto err;
249	0	}
250	0	}
251	0	}
252
253	0	for (i = 0; i < db->num_fields; i++) {
254	0	if (db->index[i] != NULL) {
255	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
256	0	continue;
257	0	(void)lh_OPENSSL_STRING_insert(db->index[i], row);
258	0	if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
259	0	goto err1;
260	0	}
261	0	}
262	0	if (!sk_OPENSSL_PSTRING_push(db->data, row))
263	0	goto err1;
264	0	return 1;
265
266	0	err1:
267	0	db->error = DB_ERROR_MALLOC;
268	0	while (i-- > 0) {
269	0	if (db->index[i] != NULL) {
270	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
271	0	continue;
272	0	(void)lh_OPENSSL_STRING_delete(db->index[i], row);
273	0	}
274	0	}
275	0	err:
276	0	return 0;
277	0	}
278
279		void TXT_DB_free(TXT_DB *db)
280	0	{
281	0	int i, n;
282	0	char *p, max;
283
284	0	if (db == NULL)
285	0	return;
286	0	if (db->index != NULL) {
287	0	for (i = db->num_fields - 1; i >= 0; i--)
288	0	lh_OPENSSL_STRING_free(db->index[i]);
289	0	OPENSSL_free(db->index);
290	0	}
291	0	OPENSSL_free(db->qual);
292	0	if (db->data != NULL) {
293	0	for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
294		/*
295		* check if any 'fields' have been allocated from outside of the
296		* initial block
297		*/
298	0	p = sk_OPENSSL_PSTRING_value(db->data, i);
299	0	max = p[db->num_fields]; /* last address */
300	0	if (max == NULL) { /* new row */
301	0	for (n = 0; n < db->num_fields; n++)
302	0	OPENSSL_free(p[n]);
303	0	} else {
304	0	for (n = 0; n < db->num_fields; n++) {
305	0	if (((p[n] < (char *)p) \|\| (p[n] > max)))
306	0	OPENSSL_free(p[n]);
307	0	}
308	0	}
309	0	OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
310	0	}
311	0	sk_OPENSSL_PSTRING_free(db->data);
312	0	}
313	0	OPENSSL_free(db);
314	0	}