/src/nss-nspr/nss/lib/util/secitem.c

Source (jump to first uncovered line)
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * Support routines for SECItem data structure.
 */

#include "seccomon.h"
#include "secitem.h"
#include "secerr.h"
#include "secport.h"

SECItem *
SECITEM_AllocItem(PLArenaPool *arena, SECItem *item, unsigned int len)
{
    SECItem *result = NULL;
    void *mark = NULL;

    if (arena != NULL) {
        mark = PORT_ArenaMark(arena);
    }

    if (item == NULL) {
        if (arena != NULL) {
            result = PORT_ArenaZAlloc(arena, sizeof(SECItem));
        } else {
            result = PORT_ZAlloc(sizeof(SECItem));
        }
        if (result == NULL) {
            goto loser;
        }
    } else {
        PORT_Assert(item->data == NULL);
        result = item;
    }

    result->len = len;
    if (len) {
        if (arena != NULL) {
            result->data = PORT_ArenaAlloc(arena, len);
        } else {
            result->data = PORT_Alloc(len);
        }
        if (result->data == NULL) {
            goto loser;
        }
    } else {
        result->data = NULL;
    }

    if (mark) {
        PORT_ArenaUnmark(arena, mark);
    }
    return (result);

loser:
    if (arena != NULL) {
        if (mark) {
            PORT_ArenaRelease(arena, mark);
        }
        if (item != NULL) {
            item->data = NULL;
            item->len = 0;
        }
    } else {
        if (result != NULL) {
            SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
        }
        /*
         * If item is not NULL, the above has set item->data and
         * item->len to 0.
         */
    }
    return (NULL);
}

SECStatus
SECITEM_MakeItem(PLArenaPool *arena, SECItem *dest, const unsigned char *data,
                 unsigned int len)
{
    SECItem it = { siBuffer, (unsigned char *)data, len };

    return SECITEM_CopyItem(arena, dest, &it);
}

SECStatus
SECITEM_ReallocItem(PLArenaPool *arena, SECItem *item, unsigned int oldlen,
                    unsigned int newlen)
{
    PORT_Assert(item != NULL);
    if (item == NULL) {
        /* XXX Set error.  But to what? */
        return SECFailure;
    }

    /*
     * If no old length, degenerate to just plain alloc.
     */
    if (oldlen == 0) {
        PORT_Assert(item->data == NULL || item->len == 0);
        if (newlen == 0) {
            /* Nothing to do.  Weird, but not a failure.  */
            return SECSuccess;
        }
        item->len = newlen;
        if (arena != NULL) {
            item->data = PORT_ArenaAlloc(arena, newlen);
        } else {
            item->data = PORT_Alloc(newlen);
        }
    } else {
        if (arena != NULL) {
            item->data = PORT_ArenaGrow(arena, item->data, oldlen, newlen);
        } else {
            item->data = PORT_Realloc(item->data, newlen);
        }
    }

    if (item->data == NULL) {
        return SECFailure;
    }

    return SECSuccess;
}

SECStatus
SECITEM_ReallocItemV2(PLArenaPool *arena, SECItem *item, unsigned int newlen)
{
    unsigned char *newdata = NULL;

    PORT_Assert(item);
    if (!item) {
        PORT_SetError(SEC_ERROR_INVALID_ARGS);
        return SECFailure;
    }

    if (item->len == newlen) {
        return SECSuccess;
    }

    if (!newlen) {
        if (!arena) {
            PORT_Free(item->data);
        }
        item->data = NULL;
        item->len = 0;
        return SECSuccess;
    }

    if (!item->data) {
        /* allocate fresh block of memory */
        PORT_Assert(!item->len);
        if (arena) {
            newdata = PORT_ArenaAlloc(arena, newlen);
        } else {
            newdata = PORT_Alloc(newlen);
        }
    } else {
        /* reallocate or adjust existing block of memory */
        if (arena) {
            if (item->len > newlen) {
                /* There's no need to realloc a shorter block from the arena,
                 * because it would result in using even more memory!
                 * Therefore we'll continue to use the old block and
                 * set the item to the shorter size.
                 */
                item->len = newlen;
                return SECSuccess;
            }
            newdata = PORT_ArenaGrow(arena, item->data, item->len, newlen);
        } else {
            newdata = PORT_Realloc(item->data, newlen);
        }
    }

    if (!newdata) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        return SECFailure;
    }

    item->len = newlen;
    item->data = newdata;
    return SECSuccess;
}

SECComparison
SECITEM_CompareItem(const SECItem *a, const SECItem *b)
{
    unsigned m;
    int rv;

    if (a == b)
        return SECEqual;
    if (!a || !a->len || !a->data)
        return (!b || !b->len || !b->data) ? SECEqual : SECLessThan;
    if (!b || !b->len || !b->data)
        return SECGreaterThan;

    m = ((a->len < b->len) ? a->len : b->len);

    rv = PORT_Memcmp(a->data, b->data, m);
    if (rv) {
        return rv < 0 ? SECLessThan : SECGreaterThan;
    }
    if (a->len < b->len) {
        return SECLessThan;
    }
    if (a->len == b->len) {
        return SECEqual;
    }
    return SECGreaterThan;
}

PRBool
SECITEM_ItemsAreEqual(const SECItem *a, const SECItem *b)
{
    if (a->len != b->len)
        return PR_FALSE;
    if (!a->len)
        return PR_TRUE;
    if (!a->data || !b->data) {
        /* avoid null pointer crash. */
        return (PRBool)(a->data == b->data);
    }
    return (PRBool)!PORT_Memcmp(a->data, b->data, a->len);
}

SECItem *
SECITEM_DupItem(const SECItem *from)
{
    return SECITEM_ArenaDupItem(NULL, from);
}

SECItem *
SECITEM_ArenaDupItem(PLArenaPool *arena, const SECItem *from)
{
    SECItem *to;

    if (from == NULL) {
        return NULL;
    }

    to = SECITEM_AllocItem(arena, NULL, from->len);
    if (to == NULL) {
        return NULL;
    }

    to->type = from->type;
    if (to->len) {
        PORT_Memcpy(to->data, from->data, to->len);
    }

    return to;
}

SECStatus
SECITEM_CopyItem(PLArenaPool *arena, SECItem *to, const SECItem *from)
{
    to->type = from->type;
    if (from->data && from->len) {
        if (arena) {
            to->data = (unsigned char *)PORT_ArenaAlloc(arena, from->len);
        } else {
            to->data = (unsigned char *)PORT_Alloc(from->len);
        }

        if (!to->data) {
            return SECFailure;
        }
        PORT_Memcpy(to->data, from->data, from->len);
        to->len = from->len;
    } else {
        /*
         * If from->data is NULL but from->len is nonzero, this function
         * will succeed.  Is this right?
         */
        to->data = 0;
        to->len = 0;
    }
    return SECSuccess;
}

void
SECITEM_FreeItem(SECItem *zap, PRBool freeit)
{
    if (zap) {
        PORT_Free(zap->data);
        zap->data = 0;
        zap->len = 0;
        if (freeit) {
            PORT_Free(zap);
        }
    }
}

void
SECITEM_ZfreeItem(SECItem *zap, PRBool freeit)
{
    if (zap) {
        PORT_ZFree(zap->data, zap->len);
        zap->data = 0;
        zap->len = 0;
        if (freeit) {
            PORT_ZFree(zap, sizeof(SECItem));
        }
    }
}
/* these reroutines were taken from pkix oid.c, which is supposed to
 * replace this file some day */
/*
 * This is the hash function.  We simply XOR the encoded form with
 * itself in sizeof(PLHashNumber)-byte chunks.  Improving this
 * routine is left as an excercise for the more mathematically
 * inclined student.
 */
PLHashNumber PR_CALLBACK
SECITEM_Hash(const void *key)
{
    const SECItem *item = (const SECItem *)key;
    PLHashNumber rv = 0;

    PRUint8 *data = (PRUint8 *)item->data;
    PRUint32 i;
    PRUint8 *rvc = (PRUint8 *)&rv;

    for (i = 0; i < item->len; i++) {
        rvc[i % sizeof(rv)] ^= *data;
        data++;
    }

    return rv;
}

/*
 * This is the key-compare function.  It simply does a lexical
 * comparison on the item data.  This does not result in
 * quite the same ordering as the "sequence of numbers" order,
 * but heck it's only used internally by the hash table anyway.
 */
PRIntn PR_CALLBACK
SECITEM_HashCompare(const void *k1, const void *k2)
{
    const SECItem *i1 = (const SECItem *)k1;
    const SECItem *i2 = (const SECItem *)k2;

    return SECITEM_ItemsAreEqual(i1, i2);
}

SECItemArray *
SECITEM_AllocArray(PLArenaPool *arena, SECItemArray *array, unsigned int len)
{
    SECItemArray *result = NULL;
    void *mark = NULL;

    if (array != NULL && array->items != NULL) {
        PORT_Assert(0);
        PORT_SetError(SEC_ERROR_INVALID_ARGS);
        return NULL;
    }

    if (arena != NULL) {
        mark = PORT_ArenaMark(arena);
    }

    if (array == NULL) {
        if (arena != NULL) {
            result = PORT_ArenaZAlloc(arena, sizeof(SECItemArray));
        } else {
            result = PORT_ZAlloc(sizeof(SECItemArray));
        }
        if (result == NULL) {
            goto loser;
        }
    } else {
        result = array;
    }

    result->len = len;
    if (len) {
        if (arena != NULL) {
            result->items = PORT_ArenaZNewArray(arena, SECItem, len);
        } else {
            result->items = PORT_ZNewArray(SECItem, len);
        }
        if (result->items == NULL) {
            goto loser;
        }
    } else {
        result->items = NULL;
    }

    if (mark) {
        PORT_ArenaUnmark(arena, mark);
    }
    return result;

loser:
    if (arena != NULL) {
        if (mark) {
            PORT_ArenaRelease(arena, mark);
        }
    } else {
        if (result != NULL && array == NULL) {
            PORT_Free(result);
        }
    }
    if (array != NULL) {
        array->items = NULL;
        array->len = 0;
    }
    return NULL;
}

static void
secitem_FreeArray(SECItemArray *array, PRBool zero_items, PRBool freeit)
{
    unsigned int i;

    if (!array || !array->len || !array->items)
        return;

    for (i = 0; i < array->len; ++i) {
        SECItem *item = &array->items[i];

        if (item->data) {
            if (zero_items) {
                SECITEM_ZfreeItem(item, PR_FALSE);
            } else {
                SECITEM_FreeItem(item, PR_FALSE);
            }
        }
    }
    PORT_Free(array->items);
    array->items = NULL;
    array->len = 0;

    if (freeit)
        PORT_Free(array);
}

void
SECITEM_FreeArray(SECItemArray *array, PRBool freeit)
{
    secitem_FreeArray(array, PR_FALSE, freeit);
}

void
SECITEM_ZfreeArray(SECItemArray *array, PRBool freeit)
{
    secitem_FreeArray(array, PR_TRUE, freeit);
}

SECItemArray *
SECITEM_DupArray(PLArenaPool *arena, const SECItemArray *from)
{
    SECItemArray *result;
    unsigned int i;

    /* Require a "from" array.
     * Reject an inconsistent "from" array with NULL data and nonzero length.
     * However, allow a "from" array of zero length.
     */
    if (!from || (!from->items && from->len))
        return NULL;

    result = SECITEM_AllocArray(arena, NULL, from->len);
    if (!result)
        return NULL;

    for (i = 0; i < from->len; ++i) {
        SECStatus rv = SECITEM_CopyItem(arena,
                                        &result->items[i], &from->items[i]);
        if (rv != SECSuccess) {
            SECITEM_ZfreeArray(result, PR_TRUE);
            return NULL;
        }
    }

    return result;
}

Coverage Report

Created: 2024-11-21 07:03

Line	Count	Source (jump to first uncovered line)
1		/* This Source Code Form is subject to the terms of the Mozilla Public
2		* License, v. 2.0. If a copy of the MPL was not distributed with this
3		* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5		/*
6		* Support routines for SECItem data structure.
7		*/
8
9		#include "seccomon.h"
10		#include "secitem.h"
11		#include "secerr.h"
12		#include "secport.h"
13
14		SECItem *
15		SECITEM_AllocItem(PLArenaPool arena, SECItem item, unsigned int len)
16	1.61k	{
17	1.61k	SECItem *result = NULL;
18	1.61k	void *mark = NULL;
19
20	1.61k	if (arena != NULL) {
21	1.25k	mark = PORT_ArenaMark(arena);
22	1.25k	}
23
24	1.61k	if (item == NULL) {
25	276	if (arena != NULL) {
26	0	result = PORT_ArenaZAlloc(arena, sizeof(SECItem));
27	276	} else {
28	276	result = PORT_ZAlloc(sizeof(SECItem));
29	276	}
30	276	if (result == NULL) {
31	0	goto loser;
32	0	}
33	1.33k	} else {
34	1.33k	PORT_Assert(item->data == NULL);
35	1.33k	result = item;
36	1.33k	}
37
38	1.61k	result->len = len;
39	1.61k	if (len) {
40	1.60k	if (arena != NULL) {
41	1.25k	result->data = PORT_ArenaAlloc(arena, len);
42	1.25k	} else {
43	348	result->data = PORT_Alloc(len);
44	348	}
45	1.60k	if (result->data == NULL) {
46	0	goto loser;
47	0	}
48	1.60k	} else {
49	8	result->data = NULL;
50	8	}
51
52	1.61k	if (mark) {
53	1.25k	PORT_ArenaUnmark(arena, mark);
54	1.25k	}
55	1.61k	return (result);
56
57	0	loser:
58	0	if (arena != NULL) {
59	0	if (mark) {
60	0	PORT_ArenaRelease(arena, mark);
61	0	}
62	0	if (item != NULL) {
63	0	item->data = NULL;
64	0	item->len = 0;
65	0	}
66	0	} else {
67	0	if (result != NULL) {
68	0	SECITEM_FreeItem(result, (item == NULL) ? PR_TRUE : PR_FALSE);
69	0	}
70		/*
71		* If item is not NULL, the above has set item->data and
72		* item->len to 0.
73		*/
74	0	}
75	0	return (NULL);
76	1.61k	}
77
78		SECStatus
79		SECITEM_MakeItem(PLArenaPool arena, SECItem dest, const unsigned char *data,
80		unsigned int len)
81	0	{
82	0	SECItem it = { siBuffer, (unsigned char *)data, len };
83
84	0	return SECITEM_CopyItem(arena, dest, &it);
85	0	}
86
87		SECStatus
88		SECITEM_ReallocItem(PLArenaPool arena, SECItem item, unsigned int oldlen,
89		unsigned int newlen)
90	0	{
91	0	PORT_Assert(item != NULL);
92	0	if (item == NULL) {
93		/* XXX Set error. But to what? */
94	0	return SECFailure;
95	0	}
96
97		/*
98		* If no old length, degenerate to just plain alloc.
99		*/
100	0	if (oldlen == 0) {
101	0	PORT_Assert(item->data == NULL \|\| item->len == 0);
102	0	if (newlen == 0) {
103		/* Nothing to do. Weird, but not a failure. */
104	0	return SECSuccess;
105	0	}
106	0	item->len = newlen;
107	0	if (arena != NULL) {
108	0	item->data = PORT_ArenaAlloc(arena, newlen);
109	0	} else {
110	0	item->data = PORT_Alloc(newlen);
111	0	}
112	0	} else {
113	0	if (arena != NULL) {
114	0	item->data = PORT_ArenaGrow(arena, item->data, oldlen, newlen);
115	0	} else {
116	0	item->data = PORT_Realloc(item->data, newlen);
117	0	}
118	0	}
119
120	0	if (item->data == NULL) {
121	0	return SECFailure;
122	0	}
123
124	0	return SECSuccess;
125	0	}
126
127		SECStatus
128		SECITEM_ReallocItemV2(PLArenaPool arena, SECItem item, unsigned int newlen)
129	0	{
130	0	unsigned char *newdata = NULL;
131
132	0	PORT_Assert(item);
133	0	if (!item) {
134	0	PORT_SetError(SEC_ERROR_INVALID_ARGS);
135	0	return SECFailure;
136	0	}
137
138	0	if (item->len == newlen) {
139	0	return SECSuccess;
140	0	}
141
142	0	if (!newlen) {
143	0	if (!arena) {
144	0	PORT_Free(item->data);
145	0	}
146	0	item->data = NULL;
147	0	item->len = 0;
148	0	return SECSuccess;
149	0	}
150
151	0	if (!item->data) {
152		/* allocate fresh block of memory */
153	0	PORT_Assert(!item->len);
154	0	if (arena) {
155	0	newdata = PORT_ArenaAlloc(arena, newlen);
156	0	} else {
157	0	newdata = PORT_Alloc(newlen);
158	0	}
159	0	} else {
160		/* reallocate or adjust existing block of memory */
161	0	if (arena) {
162	0	if (item->len > newlen) {
163		/* There's no need to realloc a shorter block from the arena,
164		* because it would result in using even more memory!
165		* Therefore we'll continue to use the old block and
166		* set the item to the shorter size.
167		*/
168	0	item->len = newlen;
169	0	return SECSuccess;
170	0	}
171	0	newdata = PORT_ArenaGrow(arena, item->data, item->len, newlen);
172	0	} else {
173	0	newdata = PORT_Realloc(item->data, newlen);
174	0	}
175	0	}
176
177	0	if (!newdata) {
178	0	PORT_SetError(SEC_ERROR_NO_MEMORY);
179	0	return SECFailure;
180	0	}
181
182	0	item->len = newlen;
183	0	item->data = newdata;
184	0	return SECSuccess;
185	0	}
186
187		SECComparison
188		SECITEM_CompareItem(const SECItem a, const SECItem b)
189	4	{
190	4	unsigned m;
191	4	int rv;
192
193	4	if (a == b)
194	0	return SECEqual;
195	4	if (!a \|\| !a->len \|\| !a->data)
196	0	return (!b \|\| !b->len \|\| !b->data) ? SECEqual : SECLessThan;
197	4	if (!b \|\| !b->len \|\| !b->data)
198	0	return SECGreaterThan;
199
200	4	m = ((a->len < b->len) ? a->len : b->len);
201
202	4	rv = PORT_Memcmp(a->data, b->data, m);
203	4	if (rv) {
204	0	return rv < 0 ? SECLessThan : SECGreaterThan;
205	0	}
206	4	if (a->len < b->len) {
207	0	return SECLessThan;
208	0	}
209	4	if (a->len == b->len) {
210	4	return SECEqual;
211	4	}
212	0	return SECGreaterThan;
213	4	}
214
215		PRBool
216		SECITEM_ItemsAreEqual(const SECItem a, const SECItem b)
217	1.11k	{
218	1.11k	if (a->len != b->len)
219	4	return PR_FALSE;
220	1.11k	if (!a->len)
221	81	return PR_TRUE;
222	1.03k	if (!a->data \|\| !b->data) {
223		/* avoid null pointer crash. */
224	0	return (PRBool)(a->data == b->data);
225	0	}
226	1.03k	return (PRBool)!PORT_Memcmp(a->data, b->data, a->len);
227	1.03k	}
228
229		SECItem *
230		SECITEM_DupItem(const SECItem *from)
231	169	{
232	169	return SECITEM_ArenaDupItem(NULL, from);
233	169	}
234
235		SECItem *
236		SECITEM_ArenaDupItem(PLArenaPool arena, const SECItem from)
237	169	{
238	169	SECItem *to;
239
240	169	if (from == NULL) {
241	0	return NULL;
242	0	}
243
244	169	to = SECITEM_AllocItem(arena, NULL, from->len);
245	169	if (to == NULL) {
246	0	return NULL;
247	0	}
248
249	169	to->type = from->type;
250	169	if (to->len) {
251	161	PORT_Memcpy(to->data, from->data, to->len);
252	161	}
253
254	169	return to;
255	169	}
256
257		SECStatus
258		SECITEM_CopyItem(PLArenaPool arena, SECItem to, const SECItem *from)
259	4.01k	{
260	4.01k	to->type = from->type;
261	4.01k	if (from->data && from->len) {
262	3.60k	if (arena) {
263	3.27k	to->data = (unsigned char *)PORT_ArenaAlloc(arena, from->len);
264	3.27k	} else {
265	331	to->data = (unsigned char *)PORT_Alloc(from->len);
266	331	}
267
268	3.60k	if (!to->data) {
269	0	return SECFailure;
270	0	}
271	3.60k	PORT_Memcpy(to->data, from->data, from->len);
272	3.60k	to->len = from->len;
273	3.60k	} else {
274		/*
275		* If from->data is NULL but from->len is nonzero, this function
276		* will succeed. Is this right?
277		*/
278	408	to->data = 0;
279	408	to->len = 0;
280	408	}
281	4.01k	return SECSuccess;
282	4.01k	}
283
284		void
285		SECITEM_FreeItem(SECItem *zap, PRBool freeit)
286	270	{
287	270	if (zap) {
288	270	PORT_Free(zap->data);
289	270	zap->data = 0;
290	270	zap->len = 0;
291	270	if (freeit) {
292	208	PORT_Free(zap);
293	208	}
294	270	}
295	270	}
296
297		void
298		SECITEM_ZfreeItem(SECItem *zap, PRBool freeit)
299	310	{
300	310	if (zap) {
301	310	PORT_ZFree(zap->data, zap->len);
302	310	zap->data = 0;
303	310	zap->len = 0;
304	310	if (freeit) {
305	168	PORT_ZFree(zap, sizeof(SECItem));
306	168	}
307	310	}
308	310	}
309		/* these reroutines were taken from pkix oid.c, which is supposed to
310		* replace this file some day */
311		/*
312		* This is the hash function. We simply XOR the encoded form with
313		* itself in sizeof(PLHashNumber)-byte chunks. Improving this
314		* routine is left as an excercise for the more mathematically
315		* inclined student.
316		*/
317		PLHashNumber PR_CALLBACK
318		SECITEM_Hash(const void *key)
319	1.76k	{
320	1.76k	const SECItem item = (const SECItem )key;
321	1.76k	PLHashNumber rv = 0;
322
323	1.76k	PRUint8 data = (PRUint8 )item->data;
324	1.76k	PRUint32 i;
325	1.76k	PRUint8 rvc = (PRUint8 )&rv;
326
327	14.4k	for (i = 0; i < item->len; i++) {
328	12.7k	rvc[i % sizeof(rv)] ^= *data;
329	12.7k	data++;
330	12.7k	}
331
332	1.76k	return rv;
333	1.76k	}
334
335		/*
336		* This is the key-compare function. It simply does a lexical
337		* comparison on the item data. This does not result in
338		* quite the same ordering as the "sequence of numbers" order,
339		* but heck it's only used internally by the hash table anyway.
340		*/
341		PRIntn PR_CALLBACK
342		SECITEM_HashCompare(const void k1, const void k2)
343	1.06k	{
344	1.06k	const SECItem i1 = (const SECItem )k1;
345	1.06k	const SECItem i2 = (const SECItem )k2;
346
347	1.06k	return SECITEM_ItemsAreEqual(i1, i2);
348	1.06k	}
349
350		SECItemArray *
351		SECITEM_AllocArray(PLArenaPool arena, SECItemArray array, unsigned int len)
352	0	{
353	0	SECItemArray *result = NULL;
354	0	void *mark = NULL;
355
356	0	if (array != NULL && array->items != NULL) {
357	0	PORT_Assert(0);
358	0	PORT_SetError(SEC_ERROR_INVALID_ARGS);
359	0	return NULL;
360	0	}
361
362	0	if (arena != NULL) {
363	0	mark = PORT_ArenaMark(arena);
364	0	}
365
366	0	if (array == NULL) {
367	0	if (arena != NULL) {
368	0	result = PORT_ArenaZAlloc(arena, sizeof(SECItemArray));
369	0	} else {
370	0	result = PORT_ZAlloc(sizeof(SECItemArray));
371	0	}
372	0	if (result == NULL) {
373	0	goto loser;
374	0	}
375	0	} else {
376	0	result = array;
377	0	}
378
379	0	result->len = len;
380	0	if (len) {
381	0	if (arena != NULL) {
382	0	result->items = PORT_ArenaZNewArray(arena, SECItem, len);
383	0	} else {
384	0	result->items = PORT_ZNewArray(SECItem, len);
385	0	}
386	0	if (result->items == NULL) {
387	0	goto loser;
388	0	}
389	0	} else {
390	0	result->items = NULL;
391	0	}
392
393	0	if (mark) {
394	0	PORT_ArenaUnmark(arena, mark);
395	0	}
396	0	return result;
397
398	0	loser:
399	0	if (arena != NULL) {
400	0	if (mark) {
401	0	PORT_ArenaRelease(arena, mark);
402	0	}
403	0	} else {
404	0	if (result != NULL && array == NULL) {
405	0	PORT_Free(result);
406	0	}
407	0	}
408	0	if (array != NULL) {
409	0	array->items = NULL;
410	0	array->len = 0;
411	0	}
412	0	return NULL;
413	0	}
414
415		static void
416		secitem_FreeArray(SECItemArray *array, PRBool zero_items, PRBool freeit)
417	0	{
418	0	unsigned int i;
419
420	0	if (!array \|\| !array->len \|\| !array->items)
421	0	return;
422
423	0	for (i = 0; i < array->len; ++i) {
424	0	SECItem *item = &array->items[i];
425
426	0	if (item->data) {
427	0	if (zero_items) {
428	0	SECITEM_ZfreeItem(item, PR_FALSE);
429	0	} else {
430	0	SECITEM_FreeItem(item, PR_FALSE);
431	0	}
432	0	}
433	0	}
434	0	PORT_Free(array->items);
435	0	array->items = NULL;
436	0	array->len = 0;
437
438	0	if (freeit)
439	0	PORT_Free(array);
440	0	}
441
442		void
443		SECITEM_FreeArray(SECItemArray *array, PRBool freeit)
444	0	{
445	0	secitem_FreeArray(array, PR_FALSE, freeit);
446	0	}
447
448		void
449		SECITEM_ZfreeArray(SECItemArray *array, PRBool freeit)
450	0	{
451	0	secitem_FreeArray(array, PR_TRUE, freeit);
452	0	}
453
454		SECItemArray *
455		SECITEM_DupArray(PLArenaPool arena, const SECItemArray from)
456	0	{
457	0	SECItemArray *result;
458	0	unsigned int i;
459
460		/* Require a "from" array.
461		* Reject an inconsistent "from" array with NULL data and nonzero length.
462		* However, allow a "from" array of zero length.
463		*/
464	0	if (!from \|\| (!from->items && from->len))
465	0	return NULL;
466
467	0	result = SECITEM_AllocArray(arena, NULL, from->len);
468	0	if (!result)
469	0	return NULL;
470
471	0	for (i = 0; i < from->len; ++i) {
472	0	SECStatus rv = SECITEM_CopyItem(arena,
473	0	&result->items[i], &from->items[i]);
474	0	if (rv != SECSuccess) {
475	0	SECITEM_ZfreeArray(result, PR_TRUE);
476	0	return NULL;
477	0	}
478	0	}
479
480	0	return result;
481	0	}