[thirdparty/openssl.git] / crypto / txt_db / txt_db.c

/*
 * Copyright 1995-2018 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;
    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);
}
Commit	Line	Data
aa6bb135	1	/*
c4d3c19b	2	* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
d02b48c6	3	*
0e9725bc	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
aa6bb135 RS	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
d02b48c6 RE	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
	12	#include <string.h>
b39fc560	13	#include "internal/cryptlib.h"
ec577822 BM	14	#include <openssl/buffer.h>
ec577822 BM	15	#include <openssl/txt_db.h>
d02b48c6 RE	16
d02b48c6 RE	17	#undef BUFSIZE
0f113f3e	18	#define BUFSIZE 512
d02b48c6	19
6b691a5c	20	TXT_DB TXT_DB_read(BIO in, int num)
0f113f3e MC	21	{
0f113f3e MC	22	TXT_DB *ret = NULL;
0f113f3e MC	23	int esc = 0;
	24	long ln = 0;
	25	int i, add, n;
	26	int size = BUFSIZE;
	27	int offset = 0;
	28	char p, f;
	29	OPENSSL_STRING *pp;
	30	BUF_MEM *buf = NULL;
d02b48c6	31
0f113f3e MC	32	if ((buf = BUF_MEM_new()) == NULL)
	33	goto err;
	34	if (!BUF_MEM_grow(buf, size))
	35	goto err;
d02b48c6	36
b4faea50	37	if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL)
0f113f3e MC	38	goto err;
	39	ret->num_fields = num;
	40	ret->index = NULL;
	41	ret->qual = NULL;
	42	if ((ret->data = sk_OPENSSL_PSTRING_new_null()) == NULL)
	43	goto err;
	44	if ((ret->index = OPENSSL_malloc(sizeof(ret->index) num)) == NULL)
	45	goto err;
	46	if ((ret->qual = OPENSSL_malloc(sizeof((ret->qual)) num)) == NULL)
	47	goto err;
	48	for (i = 0; i < num; i++) {
	49	ret->index[i] = NULL;
	50	ret->qual[i] = NULL;
	51	}
d02b48c6	52
0f113f3e MC	53	add = (num + 1) * sizeof(char *);
	54	buf->data[size - 1] = '\0';
	55	offset = 0;
	56	for (;;) {
	57	if (offset != 0) {
	58	size += BUFSIZE;
	59	if (!BUF_MEM_grow_clean(buf, size))
	60	goto err;
	61	}
	62	buf->data[offset] = '\0';
	63	BIO_gets(in, &(buf->data[offset]), size - offset);
	64	ln++;
	65	if (buf->data[offset] == '\0')
	66	break;
	67	if ((offset == 0) && (buf->data[0] == '#'))
	68	continue;
	69	i = strlen(&(buf->data[offset]));
	70	offset += i;
	71	if (buf->data[offset - 1] != '\n')
	72	continue;
	73	else {
	74	buf->data[offset - 1] = '\0'; /* blat the '\n' */
75ebbd9a	75	if ((p = OPENSSL_malloc(add + offset)) == NULL)
0f113f3e MC	76	goto err;
	77	offset = 0;
	78	}
	79	pp = (char **)p;
	80	p += add;
	81	n = 0;
	82	pp[n++] = p;
	83	i = 0;
	84	f = buf->data;
d02b48c6	85
0f113f3e MC	86	esc = 0;
	87	for (;;) {
	88	if (*f == '\0')
	89	break;
	90	if (*f == '\t') {
	91	if (esc)
	92	p--;
	93	else {
	94	*(p++) = '\0';
	95	f++;
	96	if (n >= num)
	97	break;
	98	pp[n++] = p;
	99	continue;
	100	}
	101	}
	102	esc = (*f == '\\');
	103	(p++) = (f++);
	104	}
	105	*(p++) = '\0';
	106	if ((n != num) \|\| (*f != '\0')) {
9ad52c56	107	OPENSSL_free(pp);
51b04a61	108	ret->error = DB_ERROR_WRONG_NUM_FIELDS;
0f113f3e MC	109	goto err;
	110	}
	111	pp[n] = p;
9ad52c56 BE	112	if (!sk_OPENSSL_PSTRING_push(ret->data, pp)) {
9ad52c56 BE	113	OPENSSL_free(pp);
0f113f3e	114	goto err;
9ad52c56	115	}
0f113f3e	116	}
25aaa98a RS	117	BUF_MEM_free(buf);
25aaa98a RS	118	return ret;
0f113f3e MC	119	err:
0f113f3e MC	120	BUF_MEM_free(buf);
25aaa98a RS	121	if (ret != NULL) {
	122	sk_OPENSSL_PSTRING_free(ret->data);
	123	OPENSSL_free(ret->index);
	124	OPENSSL_free(ret->qual);
	125	OPENSSL_free(ret);
	126	}
26a7d938	127	return NULL;
0f113f3e	128	}
d02b48c6	129
0f113f3e MC	130	OPENSSL_STRING TXT_DB_get_by_index(TXT_DB db, int idx,
	131	OPENSSL_STRING *value)
	132	{
	133	OPENSSL_STRING *ret;
	134	LHASH_OF(OPENSSL_STRING) *lh;
d02b48c6	135
0f113f3e MC	136	if (idx >= db->num_fields) {
0f113f3e MC	137	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
26a7d938	138	return NULL;
0f113f3e MC	139	}
	140	lh = db->index[idx];
	141	if (lh == NULL) {
	142	db->error = DB_ERROR_NO_INDEX;
26a7d938	143	return NULL;
0f113f3e MC	144	}
	145	ret = lh_OPENSSL_STRING_retrieve(lh, value);
	146	db->error = DB_ERROR_OK;
26a7d938	147	return ret;
0f113f3e	148	}
d02b48c6	149
0f113f3e	150	int TXT_DB_create_index(TXT_DB db, int field, int (qual) (OPENSSL_STRING *),
739a1eb1	151	OPENSSL_LH_HASHFUNC hash, OPENSSL_LH_COMPFUNC cmp)
0f113f3e MC	152	{
0f113f3e MC	153	LHASH_OF(OPENSSL_STRING) *idx;
9ad52c56	154	OPENSSL_STRING r, k;
0f113f3e	155	int i, n;
d02b48c6	156
0f113f3e MC	157	if (field >= db->num_fields) {
0f113f3e MC	158	db->error = DB_ERROR_INDEX_OUT_OF_RANGE;
26a7d938	159	return 0;
0f113f3e MC	160	}
0f113f3e MC	161	/* FIXME: we lose type checking at this point */
739a1eb1	162	if ((idx = (LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(hash, cmp)) == NULL) {
0f113f3e	163	db->error = DB_ERROR_MALLOC;
26a7d938	164	return 0;
0f113f3e MC	165	}
	166	n = sk_OPENSSL_PSTRING_num(db->data);
	167	for (i = 0; i < n; i++) {
	168	r = sk_OPENSSL_PSTRING_value(db->data, i);
	169	if ((qual != NULL) && (qual(r) == 0))
	170	continue;
9ad52c56	171	if ((k = lh_OPENSSL_STRING_insert(idx, r)) != NULL) {
0f113f3e	172	db->error = DB_ERROR_INDEX_CLASH;
9ad52c56	173	db->arg1 = sk_OPENSSL_PSTRING_find(db->data, k);
0f113f3e MC	174	db->arg2 = i;
0f113f3e MC	175	lh_OPENSSL_STRING_free(idx);
26a7d938	176	return 0;
0f113f3e	177	}
9ad52c56 BE	178	if (lh_OPENSSL_STRING_retrieve(idx, r) == NULL) {
	179	db->error = DB_ERROR_MALLOC;
	180	lh_OPENSSL_STRING_free(idx);
26a7d938	181	return 0;
9ad52c56	182	}
0f113f3e	183	}
25aaa98a	184	lh_OPENSSL_STRING_free(db->index[field]);
0f113f3e MC	185	db->index[field] = idx;
0f113f3e MC	186	db->qual[field] = qual;
208fb891	187	return 1;
0f113f3e	188	}
d02b48c6	189
6b691a5c	190	long TXT_DB_write(BIO out, TXT_DB db)
0f113f3e MC	191	{
	192	long i, j, n, nn, l, tot = 0;
	193	char p, pp, f;
	194	BUF_MEM *buf = NULL;
	195	long ret = -1;
d02b48c6	196
0f113f3e MC	197	if ((buf = BUF_MEM_new()) == NULL)
	198	goto err;
	199	n = sk_OPENSSL_PSTRING_num(db->data);
	200	nn = db->num_fields;
	201	for (i = 0; i < n; i++) {
	202	pp = sk_OPENSSL_PSTRING_value(db->data, i);
d02b48c6	203
0f113f3e MC	204	l = 0;
	205	for (j = 0; j < nn; j++) {
	206	if (pp[j] != NULL)
	207	l += strlen(pp[j]);
	208	}
	209	if (!BUF_MEM_grow_clean(buf, (int)(l * 2 + nn)))
	210	goto err;
d02b48c6	211
0f113f3e MC	212	p = buf->data;
	213	for (j = 0; j < nn; j++) {
	214	f = pp[j];
	215	if (f != NULL)
	216	for (;;) {
	217	if (*f == '\0')
	218	break;
	219	if (*f == '\t')
	220	*(p++) = '\\';
	221	(p++) = (f++);
	222	}
	223	*(p++) = '\t';
	224	}
	225	p[-1] = '\n';
	226	j = p - buf->data;
	227	if (BIO_write(out, buf->data, (int)j) != j)
	228	goto err;
	229	tot += j;
	230	}
	231	ret = tot;
	232	err:
25aaa98a	233	BUF_MEM_free(buf);
26a7d938	234	return ret;
0f113f3e	235	}
d02b48c6	236
c869da88	237	int TXT_DB_insert(TXT_DB db, OPENSSL_STRING row)
0f113f3e MC	238	{
	239	int i;
	240	OPENSSL_STRING *r;
d02b48c6	241
0f113f3e MC	242	for (i = 0; i < db->num_fields; i++) {
	243	if (db->index[i] != NULL) {
	244	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	245	continue;
	246	r = lh_OPENSSL_STRING_retrieve(db->index[i], row);
	247	if (r != NULL) {
	248	db->error = DB_ERROR_INDEX_CLASH;
	249	db->arg1 = i;
	250	db->arg_row = r;
	251	goto err;
	252	}
	253	}
	254	}
d02b48c6	255
0f113f3e MC	256	for (i = 0; i < db->num_fields; i++) {
	257	if (db->index[i] != NULL) {
	258	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	259	continue;
	260	(void)lh_OPENSSL_STRING_insert(db->index[i], row);
9ad52c56 BE	261	if (lh_OPENSSL_STRING_retrieve(db->index[i], row) == NULL)
9ad52c56 BE	262	goto err1;
0f113f3e MC	263	}
0f113f3e MC	264	}
9ad52c56 BE	265	if (!sk_OPENSSL_PSTRING_push(db->data, row))
9ad52c56 BE	266	goto err1;
208fb891	267	return 1;
9ad52c56 BE	268
	269	err1:
	270	db->error = DB_ERROR_MALLOC;
	271	while (i-- > 0) {
	272	if (db->index[i] != NULL) {
	273	if ((db->qual[i] != NULL) && (db->qual[i] (row) == 0))
	274	continue;
	275	(void)lh_OPENSSL_STRING_delete(db->index[i], row);
	276	}
	277	}
0f113f3e	278	err:
26a7d938	279	return 0;
0f113f3e	280	}
d02b48c6	281
6b691a5c	282	void TXT_DB_free(TXT_DB *db)
0f113f3e MC	283	{
	284	int i, n;
	285	char *p, max;
d02b48c6	286
e6e9170d RS	287	if (db == NULL)
e6e9170d RS	288	return;
0f113f3e MC	289	if (db->index != NULL) {
0f113f3e MC	290	for (i = db->num_fields - 1; i >= 0; i--)
25aaa98a	291	lh_OPENSSL_STRING_free(db->index[i]);
0f113f3e MC	292	OPENSSL_free(db->index);
0f113f3e MC	293	}
b548a1f1	294	OPENSSL_free(db->qual);
0f113f3e MC	295	if (db->data != NULL) {
	296	for (i = sk_OPENSSL_PSTRING_num(db->data) - 1; i >= 0; i--) {
	297	/*
	298	* check if any 'fields' have been allocated from outside of the
	299	* initial block
	300	*/
	301	p = sk_OPENSSL_PSTRING_value(db->data, i);
	302	max = p[db->num_fields]; /* last address */
	303	if (max == NULL) { /* new row */
	304	for (n = 0; n < db->num_fields; n++)
b548a1f1	305	OPENSSL_free(p[n]);
0f113f3e MC	306	} else {
0f113f3e MC	307	for (n = 0; n < db->num_fields; n++) {
b548a1f1	308	if (((p[n] < (char *)p) \|\| (p[n] > max)))
0f113f3e MC	309	OPENSSL_free(p[n]);
	310	}
	311	}
	312	OPENSSL_free(sk_OPENSSL_PSTRING_value(db->data, i));
	313	}
	314	sk_OPENSSL_PSTRING_free(db->data);
	315	}
	316	OPENSSL_free(db);
	317	}