1 files changed, 155 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/lib/core/headers.c b/web/server/h2o/libh2o/lib/core/headers.c
new file mode 100644
index 00000000..d3118362
--- /dev/null
+++ b/web/server/h2o/libh2o/lib/core/headers.c
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2014 DeNA Co., Ltd.
+ *
+ * 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 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.
+ */
+#include <stddef.h>
+#include <stdio.h>
+#include "h2o.h"
+
+static void add_header(h2o_mem_pool_t *pool, h2o_headers_t *headers, h2o_iovec_t *name, const char *orig_name, const char *value,
+                       size_t value_len)
+{
+    h2o_header_t *slot;
+
+    h2o_vector_reserve(pool, headers, headers->size + 1);
+    slot = headers->entries + headers->size++;
+
+    slot->name = name;
+    slot->value.base = (char *)value;
+    slot->value.len = value_len;
+    slot->orig_name = orig_name ? h2o_strdup(pool, orig_name, name->len).base : NULL;
+}
+
+ssize_t h2o_find_header(const h2o_headers_t *headers, const h2o_token_t *token, ssize_t cursor)
+{
+    for (++cursor; cursor < headers->size; ++cursor) {
+        if (headers->entries[cursor].name == &token->buf) {
+            return cursor;
+        }
+    }
+    return -1;
+}
+
+ssize_t h2o_find_header_by_str(const h2o_headers_t *headers, const char *name, size_t name_len, ssize_t cursor)
+{
+    for (++cursor; cursor < headers->size; ++cursor) {
+        h2o_header_t *t = headers->entries + cursor;
+        if (h2o_memis(t->name->base, t->name->len, name, name_len)) {
+            return cursor;
+        }
+    }
+    return -1;
+}
+
+void h2o_add_header(h2o_mem_pool_t *pool, h2o_headers_t *headers, const h2o_token_t *token, const char *orig_name,
+                    const char *value, size_t value_len)
+{
+    add_header(pool, headers, (h2o_iovec_t *)&token->buf, orig_name, value, value_len);
+}
+
+void h2o_add_header_by_str(h2o_mem_pool_t *pool, h2o_headers_t *headers, const char *name, size_t name_len, int maybe_token,
+                           const char *orig_name, const char *value, size_t value_len)
+{
+    h2o_iovec_t *name_buf;
+
+    if (maybe_token) {
+        const h2o_token_t *token = h2o_lookup_token(name, name_len);
+        if (token != NULL) {
+            add_header(pool, headers, (h2o_iovec_t *)token, orig_name, value, value_len);
+            return;
+        }
+    }
+    name_buf = h2o_mem_alloc_pool(pool, sizeof(h2o_iovec_t));
+    name_buf->base = (char *)name;
+    name_buf->len = name_len;
+    add_header(pool, headers, name_buf, orig_name, value, value_len);
+}
+
+void h2o_set_header(h2o_mem_pool_t *pool, h2o_headers_t *headers, const h2o_token_t *token, const char *value, size_t value_len,
+                    int overwrite_if_exists)
+{
+    ssize_t cursor = h2o_find_header(headers, token, -1);
+    if (cursor != -1) {
+        if (overwrite_if_exists) {
+            h2o_iovec_t *slot = &headers->entries[cursor].value;
+            slot->base = (char *)value;
+            slot->len = value_len;
+        }
+    } else {
+        h2o_add_header(pool, headers, token, NULL, value, value_len);
+    }
+}
+
+void h2o_set_header_by_str(h2o_mem_pool_t *pool, h2o_headers_t *headers, const char *name, size_t name_len, int maybe_token,
+                           const char *value, size_t value_len, int overwrite_if_exists)
+{
+    ssize_t cursor;
+
+    if (maybe_token) {
+        const h2o_token_t *token = h2o_lookup_token(name, name_len);
+        if (token != NULL) {
+            h2o_set_header(pool, headers, token, value, value_len, overwrite_if_exists);
+            return;
+        }
+    }
+
+    cursor = h2o_find_header_by_str(headers, name, name_len, -1);
+    if (cursor != -1) {
+        if (overwrite_if_exists) {
+            h2o_iovec_t *slot = &headers->entries[cursor].value;
+            slot->base = (char *)value;
+            slot->len = value_len;
+        }
+    } else {
+        h2o_iovec_t *name_buf = h2o_mem_alloc_pool(pool, sizeof(h2o_iovec_t));
+        name_buf->base = (char *)name;
+        name_buf->len = name_len;
+        add_header(pool, headers, name_buf, NULL, value, value_len);
+    }
+}
+
+void h2o_set_header_token(h2o_mem_pool_t *pool, h2o_headers_t *headers, const h2o_token_t *token, const char *value,
+                          size_t value_len)
+{
+    h2o_header_t *dest = NULL;
+    size_t i;
+    for (i = 0; i != headers->size; ++i) {
+        if (headers->entries[i].name == &token->buf) {
+            if (h2o_contains_token(headers->entries[i].value.base, headers->entries[i].value.len, value, value_len, ','))
+                return;
+            dest = headers->entries + i;
+        }
+    }
+    if (dest != NULL) {
+        dest->value = h2o_concat(pool, dest->value, h2o_iovec_init(H2O_STRLIT(", ")), h2o_iovec_init(value, value_len));
+    } else {
+        h2o_add_header(pool, headers, token, NULL, value, value_len);
+    }
+}
+
+ssize_t h2o_delete_header(h2o_headers_t *headers, ssize_t cursor)
+{
+    assert(cursor != -1);
+
+    --headers->size;
+    memmove(headers->entries + cursor, headers->entries + cursor + 1, sizeof(h2o_header_t) * (headers->size - cursor));
+
+    return cursor;
+}