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

Source (jump to first uncovered line)
/*
 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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;
    long ln = 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);
        ln++;
        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: 2018-08-29 13:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the OpenSSL license (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	long ln = 0;
25	0	int i, add, n;
26	0	int size = BUFSIZE;
27	0	int offset = 0;
28	0	char p, f;
29	0	OPENSSL_STRING *pp;
30	0	BUF_MEM *buf = NULL;
31	0
32	0	if ((buf = BUF_MEM_new()) == NULL)
33	0	goto err;
34	0	if (!BUF_MEM_grow(buf, size))
35	0	goto err;
36	0
37	0	if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
38	0	goto err;
39	0	ret->num_fields = num;
40	0	ret->index = NULL;
41	0	ret->qual = NULL;
42	0	if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
43	0	goto err;
44	0	if ((ret->index = OPENSSL_malloc(sizeof(ret->index) num)) == NULL)
45	0	goto err;
46	0	if ((ret->qual = OPENSSL_malloc(sizeof((ret->qual)) num)) == NULL)
47	0	goto err;
48	0	for (i = 0; i < num; i++) {
49	0	ret->index[i] = NULL;
50	0	ret->qual[i] = NULL;
51	0	}
52	0
53	0	add = (num + 1) * sizeof(char *);
54	0	buf->data[size - 1] = '\0';
55	0	offset = 0;
56	0	for (;;) {
57	0	if (offset != 0) {
58	0	size += BUFSIZE;
59	0	if (!BUF_MEM_grow_clean(buf, size))
60	0	goto err;
61	0	}
62	0	buf->data[offset] = '\0';
63	0	BIO_gets(in, &(buf->data[offset]), size - offset);
64	0	ln++;
65	0	if (buf->data[offset] == '\0')
66	0	break;
67	0	if ((offset == 0) && (buf->data[0] == '#'))
68	0	continue;
69	0	i = strlen(&(buf->data[offset]));
70	0	offset += i;
71	0	if (buf->data[offset - 1] != '\n')
72	0	continue;
73	0	else {
74	0	buf->data[offset - 1] = '\0'; /* blat the '\n' */
75	0	if ((p = OPENSSL_malloc(add + offset)) == NULL)
76	0	goto err;
77	0	offset = 0;
78	0	}
79	0	pp = (char **)p;
80	0	p += add;
81	0	n = 0;
82	0	pp[n++] = p;
83	0	i = 0;
84	0	f = buf->data;
85	0
86	0	esc = 0;
87	0	for (;;) {
88	0	if (*f == '\0')
89	0	break;
90	0	if (*f == '\t') {
91	0	if (esc)
92	0	p--;
93	0	else {
94	0	*(p++) = '\0';
95	0	f++;
96	0	if (n >= num)
97	0	break;
98	0	pp[n++] = p;
99	0	continue;
100	0	}
101	0	}
102	0	esc = (*f == '\\');
103	0	(p++) = (f++);
104	0	}
105	0	*(p++) = '\0';
106	0	if ((n != num) \|\| (*f != '\0')) {
107	0	OPENSSL_free(pp);
108	0	ret->error = DB_ERROR_WRONG_NUM_FIELDS;
109	0	goto err;
110	0	}
111	0	pp[n] = p;
112	0	if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
113	0	OPENSSL_free(pp);
114	0	goto err;
115	0	}
116	0	}
117	0	BUF_MEM_free(buf);
118	0	return ret;
119	0	err:
120	0	BUF_MEM_free(buf);
121	0	if (ret != NULL) {
122	0	sk_OPENSSL_PSTRING_free(ret->data);
123	0	OPENSSL_free(ret->index);
124	0	OPENSSL_free(ret->qual);
125	0	OPENSSL_free(ret);
126	0	}
127	0	return NULL;
128	0	}
129
130		OPENSSL_STRING TXT_DB_get_by_index(TXT_DB db, int idx,
131		OPENSSL_STRING *value)
132	0	{
133	0	OPENSSL_STRING *ret;
134	0	LHASH_OF(OPENSSL_STRING) *lh;
135	0
136	0	if (idx >= db->num_fields) {
137	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
138	0	return NULL;
139	0	}
140	0	lh = db->index[idx];
141	0	if (lh == NULL) {
142	0	db->error = DB_ERROR_NO_INDEX;
143	0	return NULL;
144	0	}
145	0	ret = lh_OPENSSL_STRING_retrieve(lh, value);
146	0	db->error = DB_ERROR_OK;
147	0	return ret;
148	0	}
149
150		int TXT_DB_create_index(TXT_DB db, int field, int (qual) (OPENSSL_STRING *),
151		OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
152	0	{
153	0	LHASH_OF(OPENSSL_STRING) *idx;
154	0	OPENSSL_STRING r, k;
155	0	int i, n;
156	0
157	0	if (field >= db->num_fields) {
158	0	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
159	0	return 0;
160	0	}
161	0	/* FIXME: we lose type checking at this point */
162	0	if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
163	0	db->error = DB_ERROR_MALLOC;
164	0	return 0;
165	0	}
166	0	n = sk_OPENSSL_PSTRING_num(db->data);
167	0	for (i = 0; i < n; i++) {
168	0	r = sk_OPENSSL_PSTRING_value(db->data, i);
169	0	if ((qual != NULL) && (qual(r) == 0))
170	0	continue;
171	0	if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
172	0	db->error = DB_ERROR_INDEX_CLASH;
173	0	db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
174	0	db->arg2 = i;
175	0	lh_OPENSSL_STRING_free(idx);
176	0	return 0;
177	0	}
178	0	if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
179	0	db->error = DB_ERROR_MALLOC;
180	0	lh_OPENSSL_STRING_free(idx);
181	0	return 0;
182	0	}
183	0	}
184	0	lh_OPENSSL_STRING_free(db->index[field]);
185	0	db->index[field] = idx;
186	0	db->qual[field] = qual;
187	0	return 1;
188	0	}
189
190		long TXT_DB_write(BIO out, TXT_DB db)
191	0	{
192	0	long i, j, n, nn, l, tot = 0;
193	0	char p, pp, f;
194	0	BUF_MEM *buf = NULL;
195	0	long ret = -1;
196	0
197	0	if ((buf = BUF_MEM_new()) == NULL)
198	0	goto err;
199	0	n = sk_OPENSSL_PSTRING_num(db->data);
200	0	nn = db->num_fields;
201	0	for (i = 0; i < n; i++) {
202	0	pp = sk_OPENSSL_PSTRING_value(db->data, i);
203	0
204	0	l = 0;
205	0	for (j = 0; j < nn; j++) {
206	0	if (pp[j] != NULL)
207	0	l += strlen(pp[j]);
208	0	}
209	0	if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
210	0	goto err;
211	0
212	0	p = buf->data;
213	0	for (j = 0; j < nn; j++) {
214	0	f = pp[j];
215	0	if (f != NULL)
216	0	for (;;) {
217	0	if (*f == '\0')
218	0	break;
219	0	if (*f == '\t')
220	0	*(p++) = '\\';
221	0	(p++) = (f++);
222	0	}
223	0	*(p++) = '\t';
224	0	}
225	0	p[-1] = '\n';
226	0	j = p - buf->data;
227	0	if (BIO_write(out, buf->data, (int)j) != j)
228	0	goto err;
229	0	tot += j;
230	0	}
231	0	ret = tot;
232	0	err:
233	0	BUF_MEM_free(buf);
234	0	return ret;
235	0	}
236
237		int TXT_DB_insert(TXT_DB db, OPENSSL_STRING row)
238	0	{
239	0	int i;
240	0	OPENSSL_STRING *r;
241	0
242	0	for (i = 0; i < db->num_fields; i++) {
243	0	if (db->index[i] != NULL) {
244	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
245	0	continue;
246	0	r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
247	0	if (r != NULL) {
248	0	db->error = DB_ERROR_INDEX_CLASH;
249	0	db->arg1 = i;
250	0	db->arg_row = r;
251	0	goto err;
252	0	}
253	0	}
254	0	}
255	0
256	0	for (i = 0; i < db->num_fields; i++) {
257	0	if (db->index[i] != NULL) {
258	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
259	0	continue;
260	0	(void)lh_OPENSSL_STRING_insert(db->index[i], row);
261	0	if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
262	0	goto err1;
263	0	}
264	0	}
265	0	if (!sk_OPENSSL_PSTRING_push(db->data, row))
266	0	goto err1;
267	0	return 1;
268	0
269	0	err1:
270	0	db->error = DB_ERROR_MALLOC;
271	0	while (i-- > 0) {
272	0	if (db->index[i] != NULL) {
273	0	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
274	0	continue;
275	0	(void)lh_OPENSSL_STRING_delete(db->index[i], row);
276	0	}
277	0	}
278	0	err:
279	0	return 0;
280	0	}
281
282		void TXT_DB_free(TXT_DB *db)
283	0	{
284	0	int i, n;
285	0	char *p, max;
286	0
287	0	if (db == NULL)
288	0	return;
289	0	if (db->index != NULL) {
290	0	for (i = db->num_fields - 1; i >= 0; i--)
291	0	lh_OPENSSL_STRING_free(db->index[i]);
292	0	OPENSSL_free(db->index);
293	0	}
294	0	OPENSSL_free(db->qual);
295	0	if (db->data != NULL) {
296	0	for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
297	0	/*
298	0	* check if any 'fields' have been allocated from outside of the
299	0	* initial block
300	0	*/
301	0	p = sk_OPENSSL_PSTRING_value(db->data, i);
302	0	max = p[db->num_fields]; /* last address */
303	0	if (max == NULL) { /* new row */
304	0	for (n = 0; n < db->num_fields; n++)
305	0	OPENSSL_free(p[n]);
306	0	} else {
307	0	for (n = 0; n < db->num_fields; n++) {
308	0	if (((p[n] < (char *)p) \|\| (p[n] > max)))
309	0	OPENSSL_free(p[n]);
310	0	}
311	0	}
312	0	OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
313	0	}
314	0	sk_OPENSSL_PSTRING_free(db->data);
315	0	}
316	0	OPENSSL_free(db);
317	0	}