Update contrib/libs/c-ares to 1.34.2

commit_hash:abd65f143c484666e1545e6bbfb9d947df95ecd6

1 files changed, 228 insertions, 0 deletions

diff --git a/contrib/libs/c-ares/src/lib/dsa/ares_htable_dict.c b/contrib/libs/c-ares/src/lib/dsa/ares_htable_dict.c
new file mode 100644
index 0000000000..93d7a20137
--- /dev/null
+++ b/contrib/libs/c-ares/src/lib/dsa/ares_htable_dict.c
@@ -0,0 +1,228 @@
+/* MIT License
+ *
+ * Copyright (c) 2024 Brad House
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include "ares_private.h"
+#include "ares_htable.h"
+#include "ares_htable_dict.h"
+
+struct ares_htable_dict {
+  ares_htable_t *hash;
+};
+
+typedef struct {
+  char               *key;
+  char               *val;
+  ares_htable_dict_t *parent;
+} ares_htable_dict_bucket_t;
+
+void ares_htable_dict_destroy(ares_htable_dict_t *htable)
+{
+  if (htable == NULL) {
+    return; /* LCOV_EXCL_LINE: DefensiveCoding */
+  }
+
+  ares_htable_destroy(htable->hash);
+  ares_free(htable);
+}
+
+static unsigned int hash_func(const void *key, unsigned int seed)
+{
+  return ares_htable_hash_FNV1a_casecmp(key, ares_strlen(key), seed);
+}
+
+static const void *bucket_key(const void *bucket)
+{
+  const ares_htable_dict_bucket_t *arg = bucket;
+  return arg->key;
+}
+
+static void bucket_free(void *bucket)
+{
+  ares_htable_dict_bucket_t *arg = bucket;
+
+  ares_free(arg->key);
+  ares_free(arg->val);
+
+  ares_free(arg);
+}
+
+static ares_bool_t key_eq(const void *key1, const void *key2)
+{
+  return ares_strcaseeq(key1, key2);
+}
+
+ares_htable_dict_t *ares_htable_dict_create(void)
+{
+  ares_htable_dict_t *htable = ares_malloc(sizeof(*htable));
+  if (htable == NULL) {
+    goto fail; /* LCOV_EXCL_LINE: OutOfMemory */
+  }
+
+  htable->hash = ares_htable_create(hash_func, bucket_key, bucket_free, key_eq);
+  if (htable->hash == NULL) {
+    goto fail; /* LCOV_EXCL_LINE: OutOfMemory */
+  }
+
+  return htable;
+
+/* LCOV_EXCL_START: OutOfMemory */
+fail:
+  if (htable) {
+    ares_htable_destroy(htable->hash);
+    ares_free(htable);
+  }
+  return NULL;
+  /* LCOV_EXCL_STOP */
+}
+
+ares_bool_t ares_htable_dict_insert(ares_htable_dict_t *htable, const char *key,
+                                    const char *val)
+{
+  ares_htable_dict_bucket_t *bucket = NULL;
+
+  if (htable == NULL || ares_strlen(key) == 0) {
+    goto fail;
+  }
+
+  bucket = ares_malloc_zero(sizeof(*bucket));
+  if (bucket == NULL) {
+    goto fail;
+  }
+
+  bucket->parent = htable;
+  bucket->key    = ares_strdup(key);
+  if (bucket->key == NULL) {
+    goto fail;
+  }
+
+  if (val != NULL) {
+    bucket->val = ares_strdup(val);
+    if (bucket->val == NULL) {
+      goto fail;
+    }
+  }
+
+  if (!ares_htable_insert(htable->hash, bucket)) {
+    goto fail;
+  }
+
+  return ARES_TRUE;
+
+fail:
+  if (bucket) {
+    ares_free(bucket->val);
+    ares_free(bucket);
+  }
+  return ARES_FALSE;
+}
+
+ares_bool_t ares_htable_dict_get(const ares_htable_dict_t *htable,
+                                 const char *key, const char **val)
+{
+  const ares_htable_dict_bucket_t *bucket = NULL;
+
+  if (val) {
+    *val = NULL;
+  }
+
+  if (htable == NULL) {
+    return ARES_FALSE;
+  }
+
+  bucket = ares_htable_get(htable->hash, key);
+  if (bucket == NULL) {
+    return ARES_FALSE;
+  }
+
+  if (val) {
+    *val = bucket->val;
+  }
+  return ARES_TRUE;
+}
+
+const char *ares_htable_dict_get_direct(const ares_htable_dict_t *htable,
+                                        const char               *key)
+{
+  const char *val = NULL;
+  ares_htable_dict_get(htable, key, &val);
+  return val;
+}
+
+ares_bool_t ares_htable_dict_remove(ares_htable_dict_t *htable, const char *key)
+{
+  if (htable == NULL) {
+    return ARES_FALSE;
+  }
+
+  return ares_htable_remove(htable->hash, key);
+}
+
+size_t ares_htable_dict_num_keys(const ares_htable_dict_t *htable)
+{
+  if (htable == NULL) {
+    return 0;
+  }
+  return ares_htable_num_keys(htable->hash);
+}
+
+char **ares_htable_dict_keys(const ares_htable_dict_t *htable, size_t *num)
+{
+  const void **buckets = NULL;
+  size_t       cnt     = 0;
+  char       **out     = NULL;
+  size_t       i;
+
+  if (htable == NULL || num == NULL) {
+    return NULL; /* LCOV_EXCL_LINE: DefensiveCoding */
+  }
+
+  *num = 0;
+
+  buckets = ares_htable_all_buckets(htable->hash, &cnt);
+  if (buckets == NULL || cnt == 0) {
+    return NULL;
+  }
+
+  out = ares_malloc_zero(sizeof(*out) * cnt);
+  if (out == NULL) {
+    goto fail; /* LCOV_EXCL_LINE: OutOfMemory */
+  }
+
+  for (i = 0; i < cnt; i++) {
+    out[i] = ares_strdup(((const ares_htable_dict_bucket_t *)buckets[i])->key);
+    if (out[i] == NULL) {
+      goto fail;
+    }
+  }
+
+  ares_free(buckets);
+  *num = cnt;
+  return out;
+
+fail:
+  *num = 0;
+  ares_free_array(out, cnt, ares_free);
+  return NULL;
+}