1 files changed, 282 insertions, 0 deletions
diff --git a/crypto/heimdal/base/dict.c b/crypto/heimdal/base/dict.c
new file mode 100644
index 000000000000..1f9d71a0f506
--- /dev/null
+++ b/crypto/heimdal/base/dict.c
@@ -0,0 +1,282 @@
+/*
+ * Copyright (c) 2002, 1997 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "baselocl.h"
+
+struct hashentry {
+    struct hashentry **prev;
+    struct hashentry *next;
+    heim_object_t key;
+    heim_object_t value;
+};
+
+struct heim_dict_data {
+    size_t size;
+    struct hashentry **tab;
+};
+
+static void
+dict_dealloc(void *ptr)
+{
+    heim_dict_t dict = ptr;
+    struct hashentry **h, *g, *i;
+
+    for (h = dict->tab; h < &dict->tab[dict->size]; ++h) {
+	for (g = h[0]; g; g = i) {
+	    i = g->next;
+	    heim_release(g->key);
+	    heim_release(g->value);
+	    free(g);
+	}
+    }
+    free(dict->tab);
+}
+
+struct heim_type_data dict_object = {
+    HEIM_TID_DICT,
+    "dict-object",
+    NULL,
+    dict_dealloc,
+    NULL,
+    NULL,
+    NULL
+};
+
+static size_t
+isprime(size_t p)
+{
+    size_t q, i;
+
+    for(i = 2 ; i < p; i++) {
+	q = p / i;
+
+	if (i * q == p)
+	    return 0;
+	if (i * i > p)
+	    return 1;
+    }
+    return 1;
+}
+
+static size_t
+findprime(size_t p)
+{
+    if (p % 2 == 0)
+	p++;
+
+    while (isprime(p) == 0)
+	p += 2;
+
+    return p;
+}
+
+/**
+ * Allocate an array
+ *
+ * @return A new allocated array, free with heim_release()
+ */
+
+heim_dict_t
+heim_dict_create(size_t size)
+{
+    heim_dict_t dict;
+
+    dict = _heim_alloc_object(&dict_object, sizeof(*dict));
+
+    dict->size = findprime(size);
+    if (dict->size == 0) {
+	heim_release(dict);
+	return NULL;
+    }
+
+    dict->tab = calloc(dict->size, sizeof(dict->tab[0]));
+    if (dict->tab == NULL) {
+	dict->size = 0;
+	heim_release(dict);
+	return NULL;
+    }
+
+    return dict;
+}
+
+/**
+ * Get type id of an dict
+ *
+ * @return the type id
+ */
+
+heim_tid_t
+heim_dict_get_type_id(void)
+{
+    return HEIM_TID_DICT;
+}
+
+/* Intern search function */
+
+static struct hashentry *
+_search(heim_dict_t dict, heim_object_t ptr)
+{
+    unsigned long v = heim_get_hash(ptr);
+    struct hashentry *p;
+
+    for (p = dict->tab[v % dict->size]; p != NULL; p = p->next)
+	if (heim_cmp(ptr, p->key) == 0)
+	    return p;
+
+    return NULL;
+}
+
+/**
+ * Search for element in hash table
+ *
+ * @value dict the dict to search in
+ * @value key the key to search for
+ *
+ * @return a retained copy of the value for key or NULL if not found
+ */
+
+heim_object_t
+heim_dict_copy_value(heim_dict_t dict, heim_object_t key)
+{
+    struct hashentry *p;
+    p = _search(dict, key);
+    if (p == NULL)
+	return NULL;
+
+    return heim_retain(p->value);
+}
+
+/**
+ * Add key and value to dict
+ *
+ * @value dict the dict to add too
+ * @value key the key to add
+ * @value value the value to add
+ *
+ * @return 0 if added, errno if not
+ */
+
+int
+heim_dict_add_value(heim_dict_t dict, heim_object_t key, heim_object_t value)
+{
+    struct hashentry **tabptr, *h;
+
+    h = _search(dict, key);
+    if (h) {
+	heim_release(h->value);
+	h->value = heim_retain(value);
+    } else {
+	unsigned long v;
+
+	h = malloc(sizeof(*h));
+	if (h == NULL)
+	    return ENOMEM;
+
+	h->key = heim_retain(key);
+	h->value = heim_retain(value);
+
+	v = heim_get_hash(key);
+
+	tabptr = &dict->tab[v % dict->size];
+	h->next = *tabptr;
+	*tabptr = h;
+	h->prev = tabptr;
+	if (h->next)
+	    h->next->prev = &h->next;
+    }
+
+    return 0;
+}
+
+/**
+ * Delete element with key key
+ *
+ * @value dict the dict to delete from
+ * @value key the key to delete
+ */
+
+void
+heim_dict_delete_key(heim_dict_t dict, heim_object_t key)
+{
+    struct hashentry *h = _search(dict, key);
+
+    if (h == NULL)
+	return;
+
+    heim_release(h->key);
+    heim_release(h->value);
+
+    if ((*(h->prev) = h->next) != NULL)
+	h->next->prev = h->prev;
+
+    free(h);
+}
+
+/**
+ * Do something for each element
+ *
+ * @value dict the dict to interate over
+ * @value func the function to search for
+ * @value arg argument to func
+ */
+
+void
+heim_dict_iterate_f(heim_dict_t dict, heim_dict_iterator_f_t func, void *arg)
+{
+    struct hashentry **h, *g;
+
+    for (h = dict->tab; h < &dict->tab[dict->size]; ++h)
+	for (g = *h; g; g = g->next)
+	    func(g->key, g->value, arg);
+}
+
+#ifdef __BLOCKS__
+/**
+ * Do something for each element
+ *
+ * @value dict the dict to interate over
+ * @value func the function to search for
+ */
+
+void
+heim_dict_iterate(heim_dict_t dict, void (^func)(heim_object_t, heim_object_t))
+{
+    struct hashentry **h, *g;
+
+    for (h = dict->tab; h < &dict->tab[dict->size]; ++h)
+	for (g = *h; g; g = g->next)
+	    func(g->key, g->value);
+}
+#endif