/src/openssl30/crypto/txt_db/txt_db.c

Source (jump to first uncovered line)
/*
 * Copyright 1995-2022 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(sizeof(*ret->index) * num)) == NULL)
        goto err;
    if ((ret->qual = OPENSSL_malloc(sizeof(*(ret->qual)) * num)) == 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 = 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;
        i = 0;
        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 += 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 = 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: 2023-09-25 06:45

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 1995-2022 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(sizeof(ret->index) num)) == NULL)
44	0	goto err;
45	0	if ((ret->qual = OPENSSL_malloc(sizeof((ret->qual)) num)) == 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 = 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	i = 0;
82	0	f = buf->data;
83
84	0	esc = 0;
85	0	for (;;) {
86	0	if (*f == '\0')
87	0	break;
88	0	if (*f == '\t') {
89	0	if (esc)
90	0	p--;
91	0	else {
92	0	*(p++) = '\0';
93	0	f++;
94	0	if (n >= num)
95	0	break;
96	0	pp[n++] = p;
97	0	continue;
98	0	}
99	0	}
100	0	esc = (*f == '\\');
101	0	(p++) = (f++);
102	0	}
103	0	*(p++) = '\0';
104	0	if ((n != num) \|\| (*f != '\0')) {
105	0	OPENSSL_free(pp);
106	0	ret->error = DB_ERROR_WRONG_NUM_FIELDS;
107	0	goto err;
108	0	}
109	0	pp[n] = p;
110	0	if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
111	0	OPENSSL_free(pp);
112	0	goto err;
113	0	}
114	0	}
115	0	BUF_MEM_free(buf);
116	0	return ret;
117	0	err:
118	0	BUF_MEM_free(buf);
119	0	if (ret != NULL) {
120	0	sk_OPENSSL_PSTRING_free(ret->data);
121	0	OPENSSL_free(ret->index);
122	0	OPENSSL_free(ret->qual);
123	0	OPENSSL_free(ret);
124	0	}
125	0	return NULL;
126	0	}
127
128		OPENSSL_STRING TXT_DB_get_by_index(TXT_DB db, int idx,
129		OPENSSL_STRING *value)
130	0	{
131	0	OPENSSL_STRING *ret;
132	0	LHASH_OF(OPENSSL_STRING) *lh;
133
134	0	if (idx >= db->num_fields) {
135	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
136	0	return NULL;
137	0	}
138	0	lh = db->index[idx];
139	0	if (lh == NULL) {
140	0	db->error = DB_ERROR_NO_INDEX;
141	0	return NULL;
142	0	}
143	0	ret = lh_OPENSSL_STRING_retrieve(lh, value);
144	0	db->error = DB_ERROR_OK;
145	0	return ret;
146	0	}
147
148		int TXT_DB_create_index(TXT_DB db, int field, int (qual) (OPENSSL_STRING *),
149		OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
150	0	{
151	0	LHASH_OF(OPENSSL_STRING) *idx;
152	0	OPENSSL_STRING r, k;
153	0	int i, n;
154
155	0	if (field >= db->num_fields) {
156	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
157	0	return 0;
158	0	}
159		/* FIXME: we lose type checking at this point */
160	0	if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
161	0	db->error = DB_ERROR_MALLOC;
162	0	return 0;
163	0	}
164	0	n = sk_OPENSSL_PSTRING_num(db->data);
165	0	for (i = 0; i < n; i++) {
166	0	r = sk_OPENSSL_PSTRING_value(db->data, i);
167	0	if ((qual != NULL) && (qual(r) == 0))
168	0	continue;
169	0	if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
170	0	db->error = DB_ERROR_INDEX_CLASH;
171	0	db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
172	0	db->arg2 = i;
173	0	lh_OPENSSL_STRING_free(idx);
174	0	return 0;
175	0	}
176	0	if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
177	0	db->error = DB_ERROR_MALLOC;
178	0	lh_OPENSSL_STRING_free(idx);
179	0	return 0;
180	0	}
181	0	}
182	0	lh_OPENSSL_STRING_free(db->index[field]);
183	0	db->index[field] = idx;
184	0	db->qual[field] = qual;
185	0	return 1;
186	0	}
187
188		long TXT_DB_write(BIO out, TXT_DB db)
189	0	{
190	0	long i, j, n, nn, l, tot = 0;
191	0	char p, pp, f;
192	0	BUF_MEM *buf = NULL;
193	0	long ret = -1;
194
195	0	if ((buf = BUF_MEM_new()) == NULL)
196	0	goto err;
197	0	n = sk_OPENSSL_PSTRING_num(db->data);
198	0	nn = db->num_fields;
199	0	for (i = 0; i < n; i++) {
200	0	pp = sk_OPENSSL_PSTRING_value(db->data, i);
201
202	0	l = 0;
203	0	for (j = 0; j < nn; j++) {
204	0	if (pp[j] != NULL)
205	0	l += strlen(pp[j]);
206	0	}
207	0	if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
208	0	goto err;
209
210	0	p = buf->data;
211	0	for (j = 0; j < nn; j++) {
212	0	f = pp[j];
213	0	if (f != NULL)
214	0	for (;;) {
215	0	if (*f == '\0')
216	0	break;
217	0	if (*f == '\t')
218	0	*(p++) = '\\';
219	0	(p++) = (f++);
220	0	}
221	0	*(p++) = '\t';
222	0	}
223	0	p[-1] = '\n';
224	0	j = p - buf->data;
225	0	if (BIO_write(out, buf->data, (int)j) != j)
226	0	goto err;
227	0	tot += j;
228	0	}
229	0	ret = tot;
230	0	err:
231	0	BUF_MEM_free(buf);
232	0	return ret;
233	0	}
234
235		int TXT_DB_insert(TXT_DB db, OPENSSL_STRING row)
236	0	{
237	0	int i;
238	0	OPENSSL_STRING *r;
239
240	0	for (i = 0; i < db->num_fields; i++) {
241	0	if (db->index[i] != NULL) {
242	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
243	0	continue;
244	0	r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
245	0	if (r != NULL) {
246	0	db->error = DB_ERROR_INDEX_CLASH;
247	0	db->arg1 = i;
248	0	db->arg_row = r;
249	0	goto err;
250	0	}
251	0	}
252	0	}
253
254	0	for (i = 0; i < db->num_fields; i++) {
255	0	if (db->index[i] != NULL) {
256	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
257	0	continue;
258	0	(void)lh_OPENSSL_STRING_insert(db->index[i], row);
259	0	if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
260	0	goto err1;
261	0	}
262	0	}
263	0	if (!sk_OPENSSL_PSTRING_push(db->data, row))
264	0	goto err1;
265	0	return 1;
266
267	0	err1:
268	0	db->error = DB_ERROR_MALLOC;
269	0	while (i-- > 0) {
270	0	if (db->index[i] != NULL) {
271	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
272	0	continue;
273	0	(void)lh_OPENSSL_STRING_delete(db->index[i], row);
274	0	}
275	0	}
276	0	err:
277	0	return 0;
278	0	}
279
280		void TXT_DB_free(TXT_DB *db)
281	0	{
282	0	int i, n;
283	0	char *p, max;
284
285	0	if (db == NULL)
286	0	return;
287	0	if (db->index != NULL) {
288	0	for (i = db->num_fields - 1; i >= 0; i--)
289	0	lh_OPENSSL_STRING_free(db->index[i]);
290	0	OPENSSL_free(db->index);
291	0	}
292	0	OPENSSL_free(db->qual);
293	0	if (db->data != NULL) {
294	0	for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
295		/*
296		* check if any 'fields' have been allocated from outside of the
297		* initial block
298		*/
299	0	p = sk_OPENSSL_PSTRING_value(db->data, i);
300	0	max = p[db->num_fields]; /* last address */
301	0	if (max == NULL) { /* new row */
302	0	for (n = 0; n < db->num_fields; n++)
303	0	OPENSSL_free(p[n]);
304	0	} else {
305	0	for (n = 0; n < db->num_fields; n++) {
306	0	if (((p[n] < (char *)p) \|\| (p[n] > max)))
307	0	OPENSSL_free(p[n]);
308	0	}
309	0	}
310	0	OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
311	0	}
312	0	sk_OPENSSL_PSTRING_free(db->data);
313	0	}
314	0	OPENSSL_free(db);
315	0	}