112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
#include "parse_uri.h"
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#include <string.h>
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// From: https://github.com/nghttp2/nghttp2/blob/master/examples/client.c
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/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2013 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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int parse_uri(struct URI* res, const char* uri)
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{
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/* We only interested in https */
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size_t len, i, offset;
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int ipv6addr = 0;
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memset(res, 0, sizeof(struct URI));
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len = strlen(uri);
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if (len < 9 || memcmp("https://", uri, 8) != 0) {
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return -1;
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}
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offset = 8;
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res->host = res->hostport = &uri[offset];
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res->hostlen = 0;
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if (uri[offset] == '[') {
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/* IPv6 literal address */
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++offset;
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++res->host;
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ipv6addr = 1;
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for (i = offset; i < len; ++i) {
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if (uri[i] == ']') {
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res->hostlen = i - offset;
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offset = i + 1;
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break;
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}
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}
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} else {
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const char delims[] = ":/?#";
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for (i = offset; i < len; ++i) {
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if (strchr(delims, uri[i]) != NULL) {
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break;
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}
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}
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res->hostlen = i - offset;
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offset = i;
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}
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if (res->hostlen == 0) {
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return -1;
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}
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/* Assuming https */
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res->port = 443;
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if (offset < len) {
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if (uri[offset] == ':') {
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/* port */
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const char delims[] = "/?#";
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int port = 0;
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++offset;
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for (i = offset; i < len; ++i) {
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if (strchr(delims, uri[i]) != NULL) {
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break;
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}
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if ('0' <= uri[i] && uri[i] <= '9') {
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port *= 10;
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port += uri[i] - '0';
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if (port > 65535) {
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return -1;
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}
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} else {
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return -1;
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}
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}
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if (port == 0) {
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return -1;
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}
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offset = i;
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res->port = (uint16_t)port;
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}
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}
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res->hostportlen = (size_t)(uri + offset + ipv6addr - res->host);
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for (i = offset; i < len; ++i) {
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if (uri[i] == '#') {
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break;
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}
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}
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if (i - offset == 0) {
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res->path = "/";
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res->pathlen = 1;
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} else {
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res->path = &uri[offset];
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res->pathlen = i - offset;
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}
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return 0;
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}
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