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#include "parse_uri.h"
#include <string.h>
// From: https://github.com/nghttp2/nghttp2/blob/master/examples/client.c
/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2013 Tatsuhiro Tsujikawa
*
* 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.
*/
int parse_uri(struct URI* res, const char* uri)
{
/* We only interested in https */
size_t len, i, offset;
int ipv6addr = 0;
memset(res, 0, sizeof(struct URI));
len = strlen(uri);
if (len < 9 || memcmp("https://", uri, 8) != 0) {
return -1;
}
offset = 8;
res->host = res->hostport = &uri[offset];
res->hostlen = 0;
if (uri[offset] == '[') {
/* IPv6 literal address */
++offset;
++res->host;
ipv6addr = 1;
for (i = offset; i < len; ++i) {
if (uri[i] == ']') {
res->hostlen = i - offset;
offset = i + 1;
break;
}
}
} else {
const char delims[] = ":/?#";
for (i = offset; i < len; ++i) {
if (strchr(delims, uri[i]) != NULL) {
break;
}
}
res->hostlen = i - offset;
offset = i;
}
if (res->hostlen == 0) {
return -1;
}
/* Assuming https */
res->port = 443;
if (offset < len) {
if (uri[offset] == ':') {
/* port */
const char delims[] = "/?#";
int port = 0;
++offset;
for (i = offset; i < len; ++i) {
if (strchr(delims, uri[i]) != NULL) {
break;
}
if ('0' <= uri[i] && uri[i] <= '9') {
port *= 10;
port += uri[i] - '0';
if (port > 65535) {
return -1;
}
} else {
return -1;
}
}
if (port == 0) {
return -1;
}
offset = i;
res->port = (uint16_t)port;
}
}
res->hostportlen = (size_t)(uri + offset + ipv6addr - res->host);
for (i = offset; i < len; ++i) {
if (uri[i] == '#') {
break;
}
}
if (i - offset == 0) {
res->path = "/";
res->pathlen = 1;
} else {
res->path = &uri[offset];
res->pathlen = i - offset;
}
return 0;
}
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