/*
* 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 {
std::string create_error_html(unsigned int status_code) {
std::string res;
res.reserve(512);
auto status = http2::get_status_string(status_code);
res += R"()";
res += status;
res += "
";
res += status;
res += "
";
return res;
}
std::string create_via_header_value(int major, int minor) {
std::string hdrs;
hdrs += static_cast(major + '0');
if (major < 2) {
hdrs += '.';
hdrs += static_cast(minor + '0');
}
hdrs += " nghttpx";
return hdrs;
}
std::string create_forwarded(int params, const StringRef &node_by,
const std::string &node_for,
const std::string &host,
const std::string &proto) {
std::string res;
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') {
res += "by=";
res += node_by;
res += ";";
} else {
res += "by=\"";
res += node_by;
res += "\";";
}
}
if ((params & FORWARDED_FOR) && !node_for.empty()) {
// We only quote IPv6 literal address only, which starts with '['.
if (node_for[0] == '[') {
res += "for=\"";
res += node_for;
res += "\";";
} else {
res += "for=";
res += node_for;
res += ";";
}
}
if ((params & FORWARDED_HOST) && !host.empty()) {
// Just be quoted to skip checking characters.
res += "host=\"";
res += host;
res += "\";";
}
if ((params & FORWARDED_PROTO) && !proto.empty()) {
// Scheme production rule only allow characters which are all in
// token.
res += "proto=";
res += proto;
res += ";";
}
if (res.empty()) {
return res;
}
res.erase(res.size() - 1);
return res;
}
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