168 lines
5.4 KiB
C++
168 lines
5.4 KiB
C++
/*
|
|
* nghttp2 - HTTP/2 C Library
|
|
*
|
|
* Copyright (c) 2012 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.
|
|
*/
|
|
#include "shrpx_http.h"
|
|
|
|
#include "shrpx_config.h"
|
|
#include "shrpx_log.h"
|
|
#include "http2.h"
|
|
#include "util.h"
|
|
|
|
using namespace nghttp2;
|
|
|
|
namespace shrpx {
|
|
|
|
namespace http {
|
|
|
|
StringRef create_error_html(BlockAllocator &balloc, unsigned int http_status) {
|
|
auto &httpconf = get_config()->http;
|
|
|
|
const auto &error_pages = httpconf.error_pages;
|
|
for (const auto &page : error_pages) {
|
|
if (page.http_status == 0 || page.http_status == http_status) {
|
|
return StringRef{std::begin(page.content), std::end(page.content)};
|
|
}
|
|
}
|
|
|
|
auto status_string = http2::get_status_string(balloc, http_status);
|
|
const auto &server_name = httpconf.server_name;
|
|
|
|
return concat_string_ref(
|
|
balloc, StringRef::from_lit(R"(<!DOCTYPE html><html lang="en"><title>)"),
|
|
status_string, StringRef::from_lit("</title><body><h1>"), status_string,
|
|
StringRef::from_lit("</h1><footer>"), StringRef{server_name},
|
|
StringRef::from_lit("</footer></body></html>"));
|
|
}
|
|
|
|
StringRef create_forwarded(BlockAllocator &balloc, int params,
|
|
const StringRef &node_by, const StringRef &node_for,
|
|
const StringRef &host, const StringRef &proto) {
|
|
size_t len = 0;
|
|
if ((params & FORWARDED_BY) && !node_by.empty()) {
|
|
len += str_size("by=\"") + node_by.size() + str_size("\";");
|
|
}
|
|
if ((params & FORWARDED_FOR) && !node_for.empty()) {
|
|
len += str_size("for=\"") + node_for.size() + str_size("\";");
|
|
}
|
|
if ((params & FORWARDED_HOST) && !host.empty()) {
|
|
len += str_size("host=\"") + host.size() + str_size("\";");
|
|
}
|
|
if ((params & FORWARDED_PROTO) && !proto.empty()) {
|
|
len += str_size("proto=") + proto.size() + str_size(";");
|
|
}
|
|
|
|
auto iov = make_byte_ref(balloc, len + 1);
|
|
auto p = iov.base;
|
|
|
|
if ((params & FORWARDED_BY) && !node_by.empty()) {
|
|
// This must be quoted-string unless it is obfuscated version
|
|
// (which starts with "_") or some special value (e.g.,
|
|
// "localhost" for UNIX domain socket), since ':' is not allowed
|
|
// in token. ':' is used to separate host and port.
|
|
if (node_by[0] == '_' || node_by[0] == 'l') {
|
|
p = util::copy_lit(p, "by=");
|
|
p = std::copy(std::begin(node_by), std::end(node_by), p);
|
|
p = util::copy_lit(p, ";");
|
|
} else {
|
|
p = util::copy_lit(p, "by=\"");
|
|
p = std::copy(std::begin(node_by), std::end(node_by), p);
|
|
p = util::copy_lit(p, "\";");
|
|
}
|
|
}
|
|
if ((params & FORWARDED_FOR) && !node_for.empty()) {
|
|
// We only quote IPv6 literal address only, which starts with '['.
|
|
if (node_for[0] == '[') {
|
|
p = util::copy_lit(p, "for=\"");
|
|
p = std::copy(std::begin(node_for), std::end(node_for), p);
|
|
p = util::copy_lit(p, "\";");
|
|
} else {
|
|
p = util::copy_lit(p, "for=");
|
|
p = std::copy(std::begin(node_for), std::end(node_for), p);
|
|
p = util::copy_lit(p, ";");
|
|
}
|
|
}
|
|
if ((params & FORWARDED_HOST) && !host.empty()) {
|
|
// Just be quoted to skip checking characters.
|
|
p = util::copy_lit(p, "host=\"");
|
|
p = std::copy(std::begin(host), std::end(host), p);
|
|
p = util::copy_lit(p, "\";");
|
|
}
|
|
if ((params & FORWARDED_PROTO) && !proto.empty()) {
|
|
// Scheme production rule only allow characters which are all in
|
|
// token.
|
|
p = util::copy_lit(p, "proto=");
|
|
p = std::copy(std::begin(proto), std::end(proto), p);
|
|
*p++ = ';';
|
|
}
|
|
|
|
if (iov.base == p) {
|
|
return StringRef{};
|
|
}
|
|
|
|
--p;
|
|
*p = '\0';
|
|
|
|
return StringRef{iov.base, p};
|
|
}
|
|
|
|
std::string colorizeHeaders(const char *hdrs) {
|
|
std::string nhdrs;
|
|
const char *p = strchr(hdrs, '\n');
|
|
if (!p) {
|
|
// Not valid HTTP header
|
|
return hdrs;
|
|
}
|
|
nhdrs.append(hdrs, p + 1);
|
|
++p;
|
|
while (1) {
|
|
const char *np = strchr(p, ':');
|
|
if (!np) {
|
|
nhdrs.append(p);
|
|
break;
|
|
}
|
|
nhdrs += TTY_HTTP_HD;
|
|
nhdrs.append(p, np);
|
|
nhdrs += TTY_RST;
|
|
p = np;
|
|
np = strchr(p, '\n');
|
|
if (!np) {
|
|
nhdrs.append(p);
|
|
break;
|
|
}
|
|
nhdrs.append(p, np + 1);
|
|
p = np + 1;
|
|
}
|
|
return nhdrs;
|
|
}
|
|
|
|
ssize_t select_padding_callback(nghttp2_session *session,
|
|
const nghttp2_frame *frame, size_t max_payload,
|
|
void *user_data) {
|
|
return std::min(max_payload, frame->hd.length + get_config()->padding);
|
|
}
|
|
|
|
} // namespace http
|
|
|
|
} // namespace shrpx
|