1957 lines
49 KiB
C++
1957 lines
49 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2012 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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#include "http2.h"
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#include "llhttp.h"
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#include "util.h"
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namespace nghttp2 {
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namespace http2 {
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StringRef get_reason_phrase(unsigned int status_code) {
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switch (status_code) {
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case 100:
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return StringRef::from_lit("Continue");
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case 101:
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return StringRef::from_lit("Switching Protocols");
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case 103:
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return StringRef::from_lit("Early Hints");
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case 200:
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return StringRef::from_lit("OK");
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case 201:
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return StringRef::from_lit("Created");
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case 202:
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return StringRef::from_lit("Accepted");
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case 203:
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return StringRef::from_lit("Non-Authoritative Information");
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case 204:
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return StringRef::from_lit("No Content");
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case 205:
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return StringRef::from_lit("Reset Content");
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case 206:
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return StringRef::from_lit("Partial Content");
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case 300:
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return StringRef::from_lit("Multiple Choices");
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case 301:
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return StringRef::from_lit("Moved Permanently");
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case 302:
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return StringRef::from_lit("Found");
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case 303:
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return StringRef::from_lit("See Other");
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case 304:
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return StringRef::from_lit("Not Modified");
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case 305:
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return StringRef::from_lit("Use Proxy");
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// case 306: return StringRef::from_lit("(Unused)");
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case 307:
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return StringRef::from_lit("Temporary Redirect");
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case 308:
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return StringRef::from_lit("Permanent Redirect");
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case 400:
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return StringRef::from_lit("Bad Request");
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case 401:
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return StringRef::from_lit("Unauthorized");
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case 402:
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return StringRef::from_lit("Payment Required");
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case 403:
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return StringRef::from_lit("Forbidden");
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case 404:
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return StringRef::from_lit("Not Found");
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case 405:
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return StringRef::from_lit("Method Not Allowed");
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case 406:
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return StringRef::from_lit("Not Acceptable");
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case 407:
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return StringRef::from_lit("Proxy Authentication Required");
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case 408:
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return StringRef::from_lit("Request Timeout");
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case 409:
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return StringRef::from_lit("Conflict");
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case 410:
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return StringRef::from_lit("Gone");
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case 411:
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return StringRef::from_lit("Length Required");
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case 412:
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return StringRef::from_lit("Precondition Failed");
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case 413:
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return StringRef::from_lit("Payload Too Large");
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case 414:
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return StringRef::from_lit("URI Too Long");
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case 415:
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return StringRef::from_lit("Unsupported Media Type");
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case 416:
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return StringRef::from_lit("Requested Range Not Satisfiable");
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case 417:
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return StringRef::from_lit("Expectation Failed");
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case 421:
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return StringRef::from_lit("Misdirected Request");
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case 425:
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// https://tools.ietf.org/html/rfc8470
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return StringRef::from_lit("Too Early");
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case 426:
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return StringRef::from_lit("Upgrade Required");
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case 428:
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return StringRef::from_lit("Precondition Required");
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case 429:
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return StringRef::from_lit("Too Many Requests");
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case 431:
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return StringRef::from_lit("Request Header Fields Too Large");
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case 451:
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return StringRef::from_lit("Unavailable For Legal Reasons");
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case 500:
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return StringRef::from_lit("Internal Server Error");
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case 501:
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return StringRef::from_lit("Not Implemented");
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case 502:
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return StringRef::from_lit("Bad Gateway");
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case 503:
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return StringRef::from_lit("Service Unavailable");
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case 504:
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return StringRef::from_lit("Gateway Timeout");
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case 505:
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return StringRef::from_lit("HTTP Version Not Supported");
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case 511:
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return StringRef::from_lit("Network Authentication Required");
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default:
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return StringRef{};
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}
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}
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StringRef stringify_status(BlockAllocator &balloc, unsigned int status_code) {
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switch (status_code) {
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case 100:
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return StringRef::from_lit("100");
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case 101:
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return StringRef::from_lit("101");
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case 103:
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return StringRef::from_lit("103");
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case 200:
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return StringRef::from_lit("200");
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case 201:
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return StringRef::from_lit("201");
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case 202:
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return StringRef::from_lit("202");
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case 203:
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return StringRef::from_lit("203");
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case 204:
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return StringRef::from_lit("204");
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case 205:
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return StringRef::from_lit("205");
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case 206:
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return StringRef::from_lit("206");
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case 300:
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return StringRef::from_lit("300");
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case 301:
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return StringRef::from_lit("301");
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case 302:
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return StringRef::from_lit("302");
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case 303:
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return StringRef::from_lit("303");
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case 304:
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return StringRef::from_lit("304");
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case 305:
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return StringRef::from_lit("305");
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// case 306: return StringRef::from_lit("306");
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case 307:
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return StringRef::from_lit("307");
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case 308:
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return StringRef::from_lit("308");
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case 400:
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return StringRef::from_lit("400");
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case 401:
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return StringRef::from_lit("401");
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case 402:
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return StringRef::from_lit("402");
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case 403:
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return StringRef::from_lit("403");
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case 404:
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return StringRef::from_lit("404");
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case 405:
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return StringRef::from_lit("405");
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case 406:
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return StringRef::from_lit("406");
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case 407:
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return StringRef::from_lit("407");
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case 408:
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return StringRef::from_lit("408");
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case 409:
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return StringRef::from_lit("409");
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case 410:
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return StringRef::from_lit("410");
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case 411:
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return StringRef::from_lit("411");
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case 412:
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return StringRef::from_lit("412");
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case 413:
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return StringRef::from_lit("413");
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case 414:
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return StringRef::from_lit("414");
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case 415:
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return StringRef::from_lit("415");
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case 416:
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return StringRef::from_lit("416");
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case 417:
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return StringRef::from_lit("417");
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case 421:
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return StringRef::from_lit("421");
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case 426:
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return StringRef::from_lit("426");
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case 428:
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return StringRef::from_lit("428");
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case 429:
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return StringRef::from_lit("429");
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case 431:
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return StringRef::from_lit("431");
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case 451:
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return StringRef::from_lit("451");
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case 500:
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return StringRef::from_lit("500");
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case 501:
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return StringRef::from_lit("501");
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case 502:
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return StringRef::from_lit("502");
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case 503:
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return StringRef::from_lit("503");
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case 504:
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return StringRef::from_lit("504");
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case 505:
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return StringRef::from_lit("505");
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case 511:
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return StringRef::from_lit("511");
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default:
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return util::make_string_ref_uint(balloc, status_code);
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}
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}
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void capitalize(DefaultMemchunks *buf, const StringRef &s) {
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buf->append(util::upcase(s[0]));
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for (size_t i = 1; i < s.size(); ++i) {
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if (s[i - 1] == '-') {
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buf->append(util::upcase(s[i]));
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} else {
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buf->append(s[i]);
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}
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}
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}
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bool lws(const char *value) {
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for (; *value; ++value) {
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switch (*value) {
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case '\t':
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case ' ':
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continue;
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default:
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return false;
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}
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}
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return true;
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}
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void copy_url_component(std::string &dest, const http_parser_url *u, int field,
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const char *url) {
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if (u->field_set & (1 << field)) {
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dest.assign(url + u->field_data[field].off, u->field_data[field].len);
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}
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}
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Headers::value_type to_header(const uint8_t *name, size_t namelen,
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const uint8_t *value, size_t valuelen,
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bool no_index, int32_t token) {
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return Header(std::string(reinterpret_cast<const char *>(name), namelen),
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std::string(reinterpret_cast<const char *>(value), valuelen),
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no_index, token);
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}
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void add_header(Headers &nva, const uint8_t *name, size_t namelen,
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const uint8_t *value, size_t valuelen, bool no_index,
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int32_t token) {
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if (valuelen > 0) {
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size_t i, j;
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for (i = 0; i < valuelen && (value[i] == ' ' || value[i] == '\t'); ++i)
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;
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for (j = valuelen - 1; j > i && (value[j] == ' ' || value[j] == '\t'); --j)
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;
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value += i;
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valuelen -= i + (valuelen - j - 1);
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}
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nva.push_back(to_header(name, namelen, value, valuelen, no_index, token));
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}
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const Headers::value_type *get_header(const Headers &nva, const char *name) {
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const Headers::value_type *res = nullptr;
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for (auto &nv : nva) {
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if (nv.name == name) {
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res = &nv;
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}
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}
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return res;
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}
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bool non_empty_value(const HeaderRefs::value_type *nv) {
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return nv && !nv->value.empty();
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}
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namespace {
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nghttp2_nv make_nv_internal(const std::string &name, const std::string &value,
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bool no_index, uint8_t nv_flags) {
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uint8_t flags;
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flags =
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nv_flags | (no_index ? NGHTTP2_NV_FLAG_NO_INDEX : NGHTTP2_NV_FLAG_NONE);
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return {(uint8_t *)name.c_str(), (uint8_t *)value.c_str(), name.size(),
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value.size(), flags};
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}
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} // namespace
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namespace {
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nghttp2_nv make_nv_internal(const StringRef &name, const StringRef &value,
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bool no_index, uint8_t nv_flags) {
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uint8_t flags;
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flags =
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nv_flags | (no_index ? NGHTTP2_NV_FLAG_NO_INDEX : NGHTTP2_NV_FLAG_NONE);
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return {(uint8_t *)name.c_str(), (uint8_t *)value.c_str(), name.size(),
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value.size(), flags};
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}
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} // namespace
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nghttp2_nv make_nv(const std::string &name, const std::string &value,
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bool no_index) {
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return make_nv_internal(name, value, no_index, NGHTTP2_NV_FLAG_NONE);
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}
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nghttp2_nv make_nv(const StringRef &name, const StringRef &value,
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bool no_index) {
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return make_nv_internal(name, value, no_index, NGHTTP2_NV_FLAG_NONE);
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}
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nghttp2_nv make_nv_nocopy(const std::string &name, const std::string &value,
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bool no_index) {
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return make_nv_internal(name, value, no_index,
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NGHTTP2_NV_FLAG_NO_COPY_NAME |
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NGHTTP2_NV_FLAG_NO_COPY_VALUE);
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}
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nghttp2_nv make_nv_nocopy(const StringRef &name, const StringRef &value,
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bool no_index) {
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return make_nv_internal(name, value, no_index,
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NGHTTP2_NV_FLAG_NO_COPY_NAME |
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NGHTTP2_NV_FLAG_NO_COPY_VALUE);
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}
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namespace {
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void copy_headers_to_nva_internal(std::vector<nghttp2_nv> &nva,
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const HeaderRefs &headers, uint8_t nv_flags,
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uint32_t flags) {
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auto it_forwarded = std::end(headers);
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auto it_xff = std::end(headers);
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auto it_xfp = std::end(headers);
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auto it_via = std::end(headers);
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for (auto it = std::begin(headers); it != std::end(headers); ++it) {
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auto kv = &(*it);
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if (kv->name.empty() || kv->name[0] == ':') {
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continue;
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}
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switch (kv->token) {
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case HD_COOKIE:
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case HD_CONNECTION:
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case HD_HOST:
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case HD_HTTP2_SETTINGS:
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case HD_KEEP_ALIVE:
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case HD_PROXY_CONNECTION:
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case HD_SERVER:
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case HD_TE:
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case HD_TRANSFER_ENCODING:
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case HD_UPGRADE:
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continue;
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case HD_EARLY_DATA:
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if (flags & HDOP_STRIP_EARLY_DATA) {
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continue;
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}
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break;
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case HD_SEC_WEBSOCKET_ACCEPT:
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if (flags & HDOP_STRIP_SEC_WEBSOCKET_ACCEPT) {
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continue;
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}
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break;
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case HD_SEC_WEBSOCKET_KEY:
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if (flags & HDOP_STRIP_SEC_WEBSOCKET_KEY) {
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continue;
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}
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break;
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case HD_FORWARDED:
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if (flags & HDOP_STRIP_FORWARDED) {
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continue;
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}
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if (it_forwarded == std::end(headers)) {
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it_forwarded = it;
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continue;
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}
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kv = &(*it_forwarded);
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it_forwarded = it;
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break;
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case HD_X_FORWARDED_FOR:
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if (flags & HDOP_STRIP_X_FORWARDED_FOR) {
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continue;
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}
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if (it_xff == std::end(headers)) {
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it_xff = it;
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continue;
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}
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kv = &(*it_xff);
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it_xff = it;
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break;
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case HD_X_FORWARDED_PROTO:
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if (flags & HDOP_STRIP_X_FORWARDED_PROTO) {
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continue;
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}
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if (it_xfp == std::end(headers)) {
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it_xfp = it;
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continue;
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}
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kv = &(*it_xfp);
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it_xfp = it;
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break;
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case HD_VIA:
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if (flags & HDOP_STRIP_VIA) {
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continue;
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}
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if (it_via == std::end(headers)) {
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it_via = it;
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continue;
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}
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kv = &(*it_via);
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it_via = it;
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break;
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}
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nva.push_back(
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make_nv_internal(kv->name, kv->value, kv->no_index, nv_flags));
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}
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}
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} // namespace
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void copy_headers_to_nva(std::vector<nghttp2_nv> &nva,
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const HeaderRefs &headers, uint32_t flags) {
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copy_headers_to_nva_internal(nva, headers, NGHTTP2_NV_FLAG_NONE, flags);
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}
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void copy_headers_to_nva_nocopy(std::vector<nghttp2_nv> &nva,
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const HeaderRefs &headers, uint32_t flags) {
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copy_headers_to_nva_internal(
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nva, headers,
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NGHTTP2_NV_FLAG_NO_COPY_NAME | NGHTTP2_NV_FLAG_NO_COPY_VALUE, flags);
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}
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void build_http1_headers_from_headers(DefaultMemchunks *buf,
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const HeaderRefs &headers,
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uint32_t flags) {
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auto it_forwarded = std::end(headers);
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auto it_xff = std::end(headers);
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auto it_xfp = std::end(headers);
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auto it_via = std::end(headers);
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for (auto it = std::begin(headers); it != std::end(headers); ++it) {
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auto kv = &(*it);
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if (kv->name.empty() || kv->name[0] == ':') {
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continue;
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}
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switch (kv->token) {
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case HD_CONNECTION:
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case HD_COOKIE:
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case HD_HOST:
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case HD_HTTP2_SETTINGS:
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case HD_KEEP_ALIVE:
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case HD_PROXY_CONNECTION:
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case HD_SERVER:
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case HD_UPGRADE:
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continue;
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case HD_EARLY_DATA:
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if (flags & HDOP_STRIP_EARLY_DATA) {
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continue;
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}
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break;
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case HD_TRANSFER_ENCODING:
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if (flags & HDOP_STRIP_TRANSFER_ENCODING) {
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continue;
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}
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break;
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case HD_FORWARDED:
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if (flags & HDOP_STRIP_FORWARDED) {
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continue;
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}
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if (it_forwarded == std::end(headers)) {
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it_forwarded = it;
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continue;
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}
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kv = &(*it_forwarded);
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it_forwarded = it;
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break;
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case HD_X_FORWARDED_FOR:
|
|
if (flags & HDOP_STRIP_X_FORWARDED_FOR) {
|
|
continue;
|
|
}
|
|
|
|
if (it_xff == std::end(headers)) {
|
|
it_xff = it;
|
|
continue;
|
|
}
|
|
|
|
kv = &(*it_xff);
|
|
it_xff = it;
|
|
break;
|
|
case HD_X_FORWARDED_PROTO:
|
|
if (flags & HDOP_STRIP_X_FORWARDED_PROTO) {
|
|
continue;
|
|
}
|
|
|
|
if (it_xfp == std::end(headers)) {
|
|
it_xfp = it;
|
|
continue;
|
|
}
|
|
|
|
kv = &(*it_xfp);
|
|
it_xfp = it;
|
|
break;
|
|
case HD_VIA:
|
|
if (flags & HDOP_STRIP_VIA) {
|
|
continue;
|
|
}
|
|
|
|
if (it_via == std::end(headers)) {
|
|
it_via = it;
|
|
continue;
|
|
}
|
|
|
|
kv = &(*it_via);
|
|
it_via = it;
|
|
break;
|
|
}
|
|
capitalize(buf, kv->name);
|
|
buf->append(": ");
|
|
buf->append(kv->value);
|
|
buf->append("\r\n");
|
|
}
|
|
}
|
|
|
|
int32_t determine_window_update_transmission(nghttp2_session *session,
|
|
int32_t stream_id) {
|
|
int32_t recv_length, window_size;
|
|
if (stream_id == 0) {
|
|
recv_length = nghttp2_session_get_effective_recv_data_length(session);
|
|
window_size = nghttp2_session_get_effective_local_window_size(session);
|
|
} else {
|
|
recv_length = nghttp2_session_get_stream_effective_recv_data_length(
|
|
session, stream_id);
|
|
window_size = nghttp2_session_get_stream_effective_local_window_size(
|
|
session, stream_id);
|
|
}
|
|
if (recv_length != -1 && window_size != -1) {
|
|
if (recv_length >= window_size / 2) {
|
|
return recv_length;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
void dump_nv(FILE *out, const char **nv) {
|
|
for (size_t i = 0; nv[i]; i += 2) {
|
|
fprintf(out, "%s: %s\n", nv[i], nv[i + 1]);
|
|
}
|
|
fputc('\n', out);
|
|
fflush(out);
|
|
}
|
|
|
|
void dump_nv(FILE *out, const nghttp2_nv *nva, size_t nvlen) {
|
|
auto end = nva + nvlen;
|
|
for (; nva != end; ++nva) {
|
|
fprintf(out, "%s: %s\n", nva->name, nva->value);
|
|
}
|
|
fputc('\n', out);
|
|
fflush(out);
|
|
}
|
|
|
|
void dump_nv(FILE *out, const Headers &nva) {
|
|
for (auto &nv : nva) {
|
|
fprintf(out, "%s: %s\n", nv.name.c_str(), nv.value.c_str());
|
|
}
|
|
fputc('\n', out);
|
|
fflush(out);
|
|
}
|
|
|
|
void dump_nv(FILE *out, const HeaderRefs &nva) {
|
|
for (auto &nv : nva) {
|
|
fprintf(out, "%s: %s\n", nv.name.c_str(), nv.value.c_str());
|
|
}
|
|
fputc('\n', out);
|
|
fflush(out);
|
|
}
|
|
|
|
void erase_header(HeaderRef *hd) {
|
|
hd->name = StringRef{};
|
|
hd->token = -1;
|
|
}
|
|
|
|
StringRef rewrite_location_uri(BlockAllocator &balloc, const StringRef &uri,
|
|
const http_parser_url &u,
|
|
const StringRef &match_host,
|
|
const StringRef &request_authority,
|
|
const StringRef &upstream_scheme) {
|
|
// We just rewrite scheme and authority.
|
|
if ((u.field_set & (1 << UF_HOST)) == 0) {
|
|
return StringRef{};
|
|
}
|
|
auto field = &u.field_data[UF_HOST];
|
|
if (!util::starts_with(std::begin(match_host), std::end(match_host),
|
|
&uri[field->off], &uri[field->off] + field->len) ||
|
|
(match_host.size() != field->len && match_host[field->len] != ':')) {
|
|
return StringRef{};
|
|
}
|
|
|
|
auto len = 0;
|
|
if (!request_authority.empty()) {
|
|
len += upstream_scheme.size() + str_size("://") + request_authority.size();
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_PATH)) {
|
|
field = &u.field_data[UF_PATH];
|
|
len += field->len;
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_QUERY)) {
|
|
field = &u.field_data[UF_QUERY];
|
|
len += 1 + field->len;
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_FRAGMENT)) {
|
|
field = &u.field_data[UF_FRAGMENT];
|
|
len += 1 + field->len;
|
|
}
|
|
|
|
auto iov = make_byte_ref(balloc, len + 1);
|
|
auto p = iov.base;
|
|
|
|
if (!request_authority.empty()) {
|
|
p = std::copy(std::begin(upstream_scheme), std::end(upstream_scheme), p);
|
|
p = util::copy_lit(p, "://");
|
|
p = std::copy(std::begin(request_authority), std::end(request_authority),
|
|
p);
|
|
}
|
|
if (u.field_set & (1 << UF_PATH)) {
|
|
field = &u.field_data[UF_PATH];
|
|
p = std::copy_n(&uri[field->off], field->len, p);
|
|
}
|
|
if (u.field_set & (1 << UF_QUERY)) {
|
|
field = &u.field_data[UF_QUERY];
|
|
*p++ = '?';
|
|
p = std::copy_n(&uri[field->off], field->len, p);
|
|
}
|
|
if (u.field_set & (1 << UF_FRAGMENT)) {
|
|
field = &u.field_data[UF_FRAGMENT];
|
|
*p++ = '#';
|
|
p = std::copy_n(&uri[field->off], field->len, p);
|
|
}
|
|
|
|
*p = '\0';
|
|
|
|
return StringRef{iov.base, p};
|
|
}
|
|
|
|
int parse_http_status_code(const StringRef &src) {
|
|
if (src.size() != 3) {
|
|
return -1;
|
|
}
|
|
|
|
int status = 0;
|
|
for (auto c : src) {
|
|
if (!isdigit(c)) {
|
|
return -1;
|
|
}
|
|
status *= 10;
|
|
status += c - '0';
|
|
}
|
|
|
|
if (status < 100) {
|
|
return -1;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
int lookup_token(const StringRef &name) {
|
|
return lookup_token(name.byte(), name.size());
|
|
}
|
|
|
|
// This function was generated by genheaderfunc.py. Inspired by h2o
|
|
// header lookup. https://github.com/h2o/h2o
|
|
int lookup_token(const uint8_t *name, size_t namelen) {
|
|
switch (namelen) {
|
|
case 2:
|
|
switch (name[1]) {
|
|
case 'e':
|
|
if (util::streq_l("t", name, 1)) {
|
|
return HD_TE;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 3:
|
|
switch (name[2]) {
|
|
case 'a':
|
|
if (util::streq_l("vi", name, 2)) {
|
|
return HD_VIA;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 4:
|
|
switch (name[3]) {
|
|
case 'e':
|
|
if (util::streq_l("dat", name, 3)) {
|
|
return HD_DATE;
|
|
}
|
|
break;
|
|
case 'k':
|
|
if (util::streq_l("lin", name, 3)) {
|
|
return HD_LINK;
|
|
}
|
|
break;
|
|
case 't':
|
|
if (util::streq_l("hos", name, 3)) {
|
|
return HD_HOST;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 5:
|
|
switch (name[4]) {
|
|
case 'h':
|
|
if (util::streq_l(":pat", name, 4)) {
|
|
return HD__PATH;
|
|
}
|
|
break;
|
|
case 't':
|
|
if (util::streq_l(":hos", name, 4)) {
|
|
return HD__HOST;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 6:
|
|
switch (name[5]) {
|
|
case 'e':
|
|
if (util::streq_l("cooki", name, 5)) {
|
|
return HD_COOKIE;
|
|
}
|
|
break;
|
|
case 'r':
|
|
if (util::streq_l("serve", name, 5)) {
|
|
return HD_SERVER;
|
|
}
|
|
break;
|
|
case 't':
|
|
if (util::streq_l("expec", name, 5)) {
|
|
return HD_EXPECT;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 7:
|
|
switch (name[6]) {
|
|
case 'c':
|
|
if (util::streq_l("alt-sv", name, 6)) {
|
|
return HD_ALT_SVC;
|
|
}
|
|
break;
|
|
case 'd':
|
|
if (util::streq_l(":metho", name, 6)) {
|
|
return HD__METHOD;
|
|
}
|
|
break;
|
|
case 'e':
|
|
if (util::streq_l(":schem", name, 6)) {
|
|
return HD__SCHEME;
|
|
}
|
|
if (util::streq_l("upgrad", name, 6)) {
|
|
return HD_UPGRADE;
|
|
}
|
|
break;
|
|
case 'r':
|
|
if (util::streq_l("traile", name, 6)) {
|
|
return HD_TRAILER;
|
|
}
|
|
break;
|
|
case 's':
|
|
if (util::streq_l(":statu", name, 6)) {
|
|
return HD__STATUS;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 8:
|
|
switch (name[7]) {
|
|
case 'n':
|
|
if (util::streq_l("locatio", name, 7)) {
|
|
return HD_LOCATION;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 9:
|
|
switch (name[8]) {
|
|
case 'd':
|
|
if (util::streq_l("forwarde", name, 8)) {
|
|
return HD_FORWARDED;
|
|
}
|
|
break;
|
|
case 'l':
|
|
if (util::streq_l(":protoco", name, 8)) {
|
|
return HD__PROTOCOL;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 10:
|
|
switch (name[9]) {
|
|
case 'a':
|
|
if (util::streq_l("early-dat", name, 9)) {
|
|
return HD_EARLY_DATA;
|
|
}
|
|
break;
|
|
case 'e':
|
|
if (util::streq_l("keep-aliv", name, 9)) {
|
|
return HD_KEEP_ALIVE;
|
|
}
|
|
break;
|
|
case 'n':
|
|
if (util::streq_l("connectio", name, 9)) {
|
|
return HD_CONNECTION;
|
|
}
|
|
break;
|
|
case 't':
|
|
if (util::streq_l("user-agen", name, 9)) {
|
|
return HD_USER_AGENT;
|
|
}
|
|
break;
|
|
case 'y':
|
|
if (util::streq_l(":authorit", name, 9)) {
|
|
return HD__AUTHORITY;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 12:
|
|
switch (name[11]) {
|
|
case 'e':
|
|
if (util::streq_l("content-typ", name, 11)) {
|
|
return HD_CONTENT_TYPE;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 13:
|
|
switch (name[12]) {
|
|
case 'l':
|
|
if (util::streq_l("cache-contro", name, 12)) {
|
|
return HD_CACHE_CONTROL;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 14:
|
|
switch (name[13]) {
|
|
case 'h':
|
|
if (util::streq_l("content-lengt", name, 13)) {
|
|
return HD_CONTENT_LENGTH;
|
|
}
|
|
break;
|
|
case 's':
|
|
if (util::streq_l("http2-setting", name, 13)) {
|
|
return HD_HTTP2_SETTINGS;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 15:
|
|
switch (name[14]) {
|
|
case 'e':
|
|
if (util::streq_l("accept-languag", name, 14)) {
|
|
return HD_ACCEPT_LANGUAGE;
|
|
}
|
|
break;
|
|
case 'g':
|
|
if (util::streq_l("accept-encodin", name, 14)) {
|
|
return HD_ACCEPT_ENCODING;
|
|
}
|
|
break;
|
|
case 'r':
|
|
if (util::streq_l("x-forwarded-fo", name, 14)) {
|
|
return HD_X_FORWARDED_FOR;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 16:
|
|
switch (name[15]) {
|
|
case 'n':
|
|
if (util::streq_l("proxy-connectio", name, 15)) {
|
|
return HD_PROXY_CONNECTION;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 17:
|
|
switch (name[16]) {
|
|
case 'e':
|
|
if (util::streq_l("if-modified-sinc", name, 16)) {
|
|
return HD_IF_MODIFIED_SINCE;
|
|
}
|
|
break;
|
|
case 'g':
|
|
if (util::streq_l("transfer-encodin", name, 16)) {
|
|
return HD_TRANSFER_ENCODING;
|
|
}
|
|
break;
|
|
case 'o':
|
|
if (util::streq_l("x-forwarded-prot", name, 16)) {
|
|
return HD_X_FORWARDED_PROTO;
|
|
}
|
|
break;
|
|
case 'y':
|
|
if (util::streq_l("sec-websocket-ke", name, 16)) {
|
|
return HD_SEC_WEBSOCKET_KEY;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 20:
|
|
switch (name[19]) {
|
|
case 't':
|
|
if (util::streq_l("sec-websocket-accep", name, 19)) {
|
|
return HD_SEC_WEBSOCKET_ACCEPT;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
void init_hdidx(HeaderIndex &hdidx) {
|
|
std::fill(std::begin(hdidx), std::end(hdidx), -1);
|
|
}
|
|
|
|
void index_header(HeaderIndex &hdidx, int32_t token, size_t idx) {
|
|
if (token == -1) {
|
|
return;
|
|
}
|
|
assert(token < HD_MAXIDX);
|
|
hdidx[token] = idx;
|
|
}
|
|
|
|
const Headers::value_type *get_header(const HeaderIndex &hdidx, int32_t token,
|
|
const Headers &nva) {
|
|
auto i = hdidx[token];
|
|
if (i == -1) {
|
|
return nullptr;
|
|
}
|
|
return &nva[i];
|
|
}
|
|
|
|
Headers::value_type *get_header(const HeaderIndex &hdidx, int32_t token,
|
|
Headers &nva) {
|
|
auto i = hdidx[token];
|
|
if (i == -1) {
|
|
return nullptr;
|
|
}
|
|
return &nva[i];
|
|
}
|
|
|
|
namespace {
|
|
template <typename InputIt> InputIt skip_lws(InputIt first, InputIt last) {
|
|
for (; first != last; ++first) {
|
|
switch (*first) {
|
|
case ' ':
|
|
case '\t':
|
|
continue;
|
|
default:
|
|
return first;
|
|
}
|
|
}
|
|
return first;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
template <typename InputIt>
|
|
InputIt skip_to_next_field(InputIt first, InputIt last) {
|
|
for (; first != last; ++first) {
|
|
switch (*first) {
|
|
case ' ':
|
|
case '\t':
|
|
case ',':
|
|
continue;
|
|
default:
|
|
return first;
|
|
}
|
|
}
|
|
return first;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
// Skip to the right dquote ('"'), handling backslash escapes.
|
|
// Returns |last| if input is not terminated with '"'.
|
|
template <typename InputIt>
|
|
InputIt skip_to_right_dquote(InputIt first, InputIt last) {
|
|
for (; first != last;) {
|
|
switch (*first) {
|
|
case '"':
|
|
return first;
|
|
case '\\':
|
|
++first;
|
|
if (first == last) {
|
|
return first;
|
|
}
|
|
break;
|
|
}
|
|
++first;
|
|
}
|
|
return first;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
// Returns true if link-param does not match pattern |pat| of length
|
|
// |patlen| or it has empty value (""). |pat| should be parmname
|
|
// followed by "=".
|
|
bool check_link_param_empty(const char *first, const char *last,
|
|
const char *pat, size_t patlen) {
|
|
if (first + patlen <= last) {
|
|
if (std::equal(pat, pat + patlen, first, util::CaseCmp())) {
|
|
// we only accept URI if pat is followd by "" (e.g.,
|
|
// loadpolicy="") here.
|
|
if (first + patlen + 2 <= last) {
|
|
if (*(first + patlen) != '"' || *(first + patlen + 1) != '"') {
|
|
return false;
|
|
}
|
|
} else {
|
|
// here we got invalid production (anchor=") or anchor=?
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
// Returns true if link-param consists of only parmname, and it
|
|
// matches string [pat, pat + patlen).
|
|
bool check_link_param_without_value(const char *first, const char *last,
|
|
const char *pat, size_t patlen) {
|
|
if (first + patlen > last) {
|
|
return false;
|
|
}
|
|
|
|
if (first + patlen == last) {
|
|
return std::equal(pat, pat + patlen, first, util::CaseCmp());
|
|
}
|
|
|
|
switch (*(first + patlen)) {
|
|
case ';':
|
|
case ',':
|
|
return std::equal(pat, pat + patlen, first, util::CaseCmp());
|
|
}
|
|
|
|
return false;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
std::pair<LinkHeader, const char *>
|
|
parse_next_link_header_once(const char *first, const char *last) {
|
|
first = skip_to_next_field(first, last);
|
|
if (first == last || *first != '<') {
|
|
return {{StringRef{}}, last};
|
|
}
|
|
auto url_first = ++first;
|
|
first = std::find(first, last, '>');
|
|
if (first == last) {
|
|
return {{StringRef{}}, first};
|
|
}
|
|
auto url_last = first++;
|
|
if (first == last) {
|
|
return {{StringRef{}}, first};
|
|
}
|
|
// we expect ';' or ',' here
|
|
switch (*first) {
|
|
case ',':
|
|
return {{StringRef{}}, ++first};
|
|
case ';':
|
|
++first;
|
|
break;
|
|
default:
|
|
return {{StringRef{}}, last};
|
|
}
|
|
|
|
auto ok = false;
|
|
auto ign = false;
|
|
for (;;) {
|
|
first = skip_lws(first, last);
|
|
if (first == last) {
|
|
return {{StringRef{}}, first};
|
|
}
|
|
// we expect link-param
|
|
|
|
if (!ign) {
|
|
if (!ok) {
|
|
// rel can take several relations using quoted form.
|
|
static constexpr char PLP[] = "rel=\"";
|
|
static constexpr size_t PLPLEN = str_size(PLP);
|
|
|
|
static constexpr char PLT[] = "preload";
|
|
static constexpr size_t PLTLEN = str_size(PLT);
|
|
if (first + PLPLEN < last && *(first + PLPLEN - 1) == '"' &&
|
|
std::equal(PLP, PLP + PLPLEN, first, util::CaseCmp())) {
|
|
// we have to search preload in whitespace separated list:
|
|
// rel="preload something http://example.org/foo"
|
|
first += PLPLEN;
|
|
auto start = first;
|
|
for (; first != last;) {
|
|
if (*first != ' ' && *first != '"') {
|
|
++first;
|
|
continue;
|
|
}
|
|
|
|
if (start == first) {
|
|
return {{StringRef{}}, last};
|
|
}
|
|
|
|
if (!ok && start + PLTLEN == first &&
|
|
std::equal(PLT, PLT + PLTLEN, start, util::CaseCmp())) {
|
|
ok = true;
|
|
}
|
|
|
|
if (*first == '"') {
|
|
break;
|
|
}
|
|
first = skip_lws(first, last);
|
|
start = first;
|
|
}
|
|
if (first == last) {
|
|
return {{StringRef{}}, last};
|
|
}
|
|
assert(*first == '"');
|
|
++first;
|
|
if (first == last || *first == ',') {
|
|
goto almost_done;
|
|
}
|
|
if (*first == ';') {
|
|
++first;
|
|
// parse next link-param
|
|
continue;
|
|
}
|
|
return {{StringRef{}}, last};
|
|
}
|
|
}
|
|
// we are only interested in rel=preload parameter. Others are
|
|
// simply skipped.
|
|
static constexpr char PL[] = "rel=preload";
|
|
static constexpr size_t PLLEN = str_size(PL);
|
|
if (first + PLLEN == last) {
|
|
if (std::equal(PL, PL + PLLEN, first, util::CaseCmp())) {
|
|
// ok = true;
|
|
// this is the end of sequence
|
|
return {{{url_first, url_last}}, last};
|
|
}
|
|
} else if (first + PLLEN + 1 <= last) {
|
|
switch (*(first + PLLEN)) {
|
|
case ',':
|
|
if (!std::equal(PL, PL + PLLEN, first, util::CaseCmp())) {
|
|
break;
|
|
}
|
|
// ok = true;
|
|
// skip including ','
|
|
first += PLLEN + 1;
|
|
return {{{url_first, url_last}}, first};
|
|
case ';':
|
|
if (!std::equal(PL, PL + PLLEN, first, util::CaseCmp())) {
|
|
break;
|
|
}
|
|
ok = true;
|
|
// skip including ';'
|
|
first += PLLEN + 1;
|
|
// continue parse next link-param
|
|
continue;
|
|
}
|
|
}
|
|
// we have to reject URI if we have nonempty anchor parameter.
|
|
static constexpr char ANCHOR[] = "anchor=";
|
|
static constexpr size_t ANCHORLEN = str_size(ANCHOR);
|
|
if (!ign && !check_link_param_empty(first, last, ANCHOR, ANCHORLEN)) {
|
|
ign = true;
|
|
}
|
|
|
|
// reject URI if we have non-empty loadpolicy. This could be
|
|
// tightened up to just pick up "next" or "insert".
|
|
static constexpr char LOADPOLICY[] = "loadpolicy=";
|
|
static constexpr size_t LOADPOLICYLEN = str_size(LOADPOLICY);
|
|
if (!ign &&
|
|
!check_link_param_empty(first, last, LOADPOLICY, LOADPOLICYLEN)) {
|
|
ign = true;
|
|
}
|
|
|
|
// reject URI if we have nopush attribute.
|
|
static constexpr char NOPUSH[] = "nopush";
|
|
static constexpr size_t NOPUSHLEN = str_size(NOPUSH);
|
|
if (!ign &&
|
|
check_link_param_without_value(first, last, NOPUSH, NOPUSHLEN)) {
|
|
ign = true;
|
|
}
|
|
}
|
|
|
|
auto param_first = first;
|
|
for (; first != last;) {
|
|
if (util::in_attr_char(*first)) {
|
|
++first;
|
|
continue;
|
|
}
|
|
// '*' is only allowed at the end of parameter name and must be
|
|
// followed by '='
|
|
if (last - first >= 2 && first != param_first) {
|
|
if (*first == '*' && *(first + 1) == '=') {
|
|
++first;
|
|
break;
|
|
}
|
|
}
|
|
if (*first == '=' || *first == ';' || *first == ',') {
|
|
break;
|
|
}
|
|
return {{StringRef{}}, last};
|
|
}
|
|
if (param_first == first) {
|
|
// empty parmname
|
|
return {{StringRef{}}, last};
|
|
}
|
|
// link-param without value is acceptable (see link-extension) if
|
|
// it is not followed by '='
|
|
if (first == last || *first == ',') {
|
|
goto almost_done;
|
|
}
|
|
if (*first == ';') {
|
|
++first;
|
|
// parse next link-param
|
|
continue;
|
|
}
|
|
// now parsing link-param value
|
|
assert(*first == '=');
|
|
++first;
|
|
if (first == last) {
|
|
// empty value is not acceptable
|
|
return {{StringRef{}}, first};
|
|
}
|
|
if (*first == '"') {
|
|
// quoted-string
|
|
first = skip_to_right_dquote(first + 1, last);
|
|
if (first == last) {
|
|
return {{StringRef{}}, first};
|
|
}
|
|
++first;
|
|
if (first == last || *first == ',') {
|
|
goto almost_done;
|
|
}
|
|
if (*first == ';') {
|
|
++first;
|
|
// parse next link-param
|
|
continue;
|
|
}
|
|
return {{StringRef{}}, last};
|
|
}
|
|
// not quoted-string, skip to next ',' or ';'
|
|
if (*first == ',' || *first == ';') {
|
|
// empty value
|
|
return {{StringRef{}}, last};
|
|
}
|
|
for (; first != last; ++first) {
|
|
if (*first == ',' || *first == ';') {
|
|
break;
|
|
}
|
|
}
|
|
if (first == last || *first == ',') {
|
|
goto almost_done;
|
|
}
|
|
assert(*first == ';');
|
|
++first;
|
|
// parse next link-param
|
|
}
|
|
|
|
almost_done:
|
|
assert(first == last || *first == ',');
|
|
|
|
if (first != last) {
|
|
++first;
|
|
}
|
|
if (ok && !ign) {
|
|
return {{{url_first, url_last}}, first};
|
|
}
|
|
return {{StringRef{}}, first};
|
|
}
|
|
} // namespace
|
|
|
|
std::vector<LinkHeader> parse_link_header(const StringRef &src) {
|
|
std::vector<LinkHeader> res;
|
|
for (auto first = std::begin(src); first != std::end(src);) {
|
|
auto rv = parse_next_link_header_once(first, std::end(src));
|
|
first = rv.second;
|
|
auto &link = rv.first;
|
|
if (!link.uri.empty()) {
|
|
res.push_back(link);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
std::string path_join(const StringRef &base_path, const StringRef &base_query,
|
|
const StringRef &rel_path, const StringRef &rel_query) {
|
|
BlockAllocator balloc(1024, 1024);
|
|
|
|
return path_join(balloc, base_path, base_query, rel_path, rel_query).str();
|
|
}
|
|
|
|
bool expect_response_body(int status_code) {
|
|
return status_code == 101 ||
|
|
(status_code / 100 != 1 && status_code != 304 && status_code != 204);
|
|
}
|
|
|
|
bool expect_response_body(const std::string &method, int status_code) {
|
|
return method != "HEAD" && expect_response_body(status_code);
|
|
}
|
|
|
|
bool expect_response_body(int method_token, int status_code) {
|
|
return method_token != HTTP_HEAD && expect_response_body(status_code);
|
|
}
|
|
|
|
int lookup_method_token(const StringRef &name) {
|
|
return lookup_method_token(name.byte(), name.size());
|
|
}
|
|
|
|
// This function was generated by genmethodfunc.py.
|
|
int lookup_method_token(const uint8_t *name, size_t namelen) {
|
|
switch (namelen) {
|
|
case 3:
|
|
switch (name[2]) {
|
|
case 'L':
|
|
if (util::streq_l("AC", name, 2)) {
|
|
return HTTP_ACL;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (util::streq_l("GE", name, 2)) {
|
|
return HTTP_GET;
|
|
}
|
|
if (util::streq_l("PU", name, 2)) {
|
|
return HTTP_PUT;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 4:
|
|
switch (name[3]) {
|
|
case 'D':
|
|
if (util::streq_l("BIN", name, 3)) {
|
|
return HTTP_BIND;
|
|
}
|
|
if (util::streq_l("HEA", name, 3)) {
|
|
return HTTP_HEAD;
|
|
}
|
|
break;
|
|
case 'E':
|
|
if (util::streq_l("MOV", name, 3)) {
|
|
return HTTP_MOVE;
|
|
}
|
|
break;
|
|
case 'K':
|
|
if (util::streq_l("LIN", name, 3)) {
|
|
return HTTP_LINK;
|
|
}
|
|
if (util::streq_l("LOC", name, 3)) {
|
|
return HTTP_LOCK;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (util::streq_l("POS", name, 3)) {
|
|
return HTTP_POST;
|
|
}
|
|
break;
|
|
case 'Y':
|
|
if (util::streq_l("COP", name, 3)) {
|
|
return HTTP_COPY;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 5:
|
|
switch (name[4]) {
|
|
case 'E':
|
|
if (util::streq_l("MERG", name, 4)) {
|
|
return HTTP_MERGE;
|
|
}
|
|
if (util::streq_l("PURG", name, 4)) {
|
|
return HTTP_PURGE;
|
|
}
|
|
if (util::streq_l("TRAC", name, 4)) {
|
|
return HTTP_TRACE;
|
|
}
|
|
break;
|
|
case 'H':
|
|
if (util::streq_l("PATC", name, 4)) {
|
|
return HTTP_PATCH;
|
|
}
|
|
break;
|
|
case 'L':
|
|
if (util::streq_l("MKCO", name, 4)) {
|
|
return HTTP_MKCOL;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 6:
|
|
switch (name[5]) {
|
|
case 'D':
|
|
if (util::streq_l("REBIN", name, 5)) {
|
|
return HTTP_REBIND;
|
|
}
|
|
if (util::streq_l("UNBIN", name, 5)) {
|
|
return HTTP_UNBIND;
|
|
}
|
|
break;
|
|
case 'E':
|
|
if (util::streq_l("DELET", name, 5)) {
|
|
return HTTP_DELETE;
|
|
}
|
|
if (util::streq_l("SOURC", name, 5)) {
|
|
return HTTP_SOURCE;
|
|
}
|
|
break;
|
|
case 'H':
|
|
if (util::streq_l("SEARC", name, 5)) {
|
|
return HTTP_SEARCH;
|
|
}
|
|
break;
|
|
case 'K':
|
|
if (util::streq_l("UNLIN", name, 5)) {
|
|
return HTTP_UNLINK;
|
|
}
|
|
if (util::streq_l("UNLOC", name, 5)) {
|
|
return HTTP_UNLOCK;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (util::streq_l("REPOR", name, 5)) {
|
|
return HTTP_REPORT;
|
|
}
|
|
break;
|
|
case 'Y':
|
|
if (util::streq_l("NOTIF", name, 5)) {
|
|
return HTTP_NOTIFY;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 7:
|
|
switch (name[6]) {
|
|
case 'H':
|
|
if (util::streq_l("MSEARC", name, 6)) {
|
|
return HTTP_MSEARCH;
|
|
}
|
|
break;
|
|
case 'S':
|
|
if (util::streq_l("OPTION", name, 6)) {
|
|
return HTTP_OPTIONS;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (util::streq_l("CONNEC", name, 6)) {
|
|
return HTTP_CONNECT;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 8:
|
|
switch (name[7]) {
|
|
case 'D':
|
|
if (util::streq_l("PROPFIN", name, 7)) {
|
|
return HTTP_PROPFIND;
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (util::streq_l("CHECKOU", name, 7)) {
|
|
return HTTP_CHECKOUT;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 9:
|
|
switch (name[8]) {
|
|
case 'E':
|
|
if (util::streq_l("SUBSCRIB", name, 8)) {
|
|
return HTTP_SUBSCRIBE;
|
|
}
|
|
break;
|
|
case 'H':
|
|
if (util::streq_l("PROPPATC", name, 8)) {
|
|
return HTTP_PROPPATCH;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 10:
|
|
switch (name[9]) {
|
|
case 'R':
|
|
if (util::streq_l("MKCALENDA", name, 9)) {
|
|
return HTTP_MKCALENDAR;
|
|
}
|
|
break;
|
|
case 'Y':
|
|
if (util::streq_l("MKACTIVIT", name, 9)) {
|
|
return HTTP_MKACTIVITY;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 11:
|
|
switch (name[10]) {
|
|
case 'E':
|
|
if (util::streq_l("UNSUBSCRIB", name, 10)) {
|
|
return HTTP_UNSUBSCRIBE;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
StringRef to_method_string(int method_token) {
|
|
// we happened to use same value for method with llhttp.
|
|
return StringRef{
|
|
llhttp_method_name(static_cast<llhttp_method>(method_token))};
|
|
}
|
|
|
|
StringRef get_pure_path_component(const StringRef &uri) {
|
|
int rv;
|
|
|
|
http_parser_url u{};
|
|
rv = http_parser_parse_url(uri.c_str(), uri.size(), 0, &u);
|
|
if (rv != 0) {
|
|
return StringRef{};
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_PATH)) {
|
|
auto &f = u.field_data[UF_PATH];
|
|
return StringRef{uri.c_str() + f.off, f.len};
|
|
}
|
|
|
|
return StringRef::from_lit("/");
|
|
}
|
|
|
|
int construct_push_component(BlockAllocator &balloc, StringRef &scheme,
|
|
StringRef &authority, StringRef &path,
|
|
const StringRef &base, const StringRef &uri) {
|
|
int rv;
|
|
StringRef rel, relq;
|
|
|
|
if (uri.size() == 0) {
|
|
return -1;
|
|
}
|
|
|
|
http_parser_url u{};
|
|
|
|
rv = http_parser_parse_url(uri.c_str(), uri.size(), 0, &u);
|
|
|
|
if (rv != 0) {
|
|
if (uri[0] == '/') {
|
|
return -1;
|
|
}
|
|
|
|
// treat link_url as relative URI.
|
|
auto end = std::find(std::begin(uri), std::end(uri), '#');
|
|
auto q = std::find(std::begin(uri), end, '?');
|
|
|
|
rel = StringRef{std::begin(uri), q};
|
|
if (q != end) {
|
|
relq = StringRef{q + 1, std::end(uri)};
|
|
}
|
|
} else {
|
|
if (u.field_set & (1 << UF_SCHEMA)) {
|
|
scheme = util::get_uri_field(uri.c_str(), u, UF_SCHEMA);
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_HOST)) {
|
|
auto auth = util::get_uri_field(uri.c_str(), u, UF_HOST);
|
|
auto len = auth.size();
|
|
auto port_exists = u.field_set & (1 << UF_PORT);
|
|
if (port_exists) {
|
|
len += 1 + str_size("65535");
|
|
}
|
|
auto iov = make_byte_ref(balloc, len + 1);
|
|
auto p = iov.base;
|
|
p = std::copy(std::begin(auth), std::end(auth), p);
|
|
if (port_exists) {
|
|
*p++ = ':';
|
|
p = util::utos(p, u.port);
|
|
}
|
|
*p = '\0';
|
|
|
|
authority = StringRef{iov.base, p};
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_PATH)) {
|
|
auto &f = u.field_data[UF_PATH];
|
|
rel = StringRef{uri.c_str() + f.off, f.len};
|
|
} else {
|
|
rel = StringRef::from_lit("/");
|
|
}
|
|
|
|
if (u.field_set & (1 << UF_QUERY)) {
|
|
auto &f = u.field_data[UF_QUERY];
|
|
relq = StringRef{uri.c_str() + f.off, f.len};
|
|
}
|
|
}
|
|
|
|
path = http2::path_join(balloc, base, StringRef{}, rel, relq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
namespace {
|
|
template <typename InputIt> InputIt eat_file(InputIt first, InputIt last) {
|
|
if (first == last) {
|
|
*first++ = '/';
|
|
return first;
|
|
}
|
|
|
|
if (*(last - 1) == '/') {
|
|
return last;
|
|
}
|
|
|
|
auto p = last;
|
|
for (; p != first && *(p - 1) != '/'; --p)
|
|
;
|
|
if (p == first) {
|
|
// this should not happened in normal case, where we expect path
|
|
// starts with '/'
|
|
*first++ = '/';
|
|
return first;
|
|
}
|
|
|
|
return p;
|
|
}
|
|
} // namespace
|
|
|
|
namespace {
|
|
template <typename InputIt> InputIt eat_dir(InputIt first, InputIt last) {
|
|
auto p = eat_file(first, last);
|
|
|
|
--p;
|
|
|
|
assert(*p == '/');
|
|
|
|
return eat_file(first, p);
|
|
}
|
|
} // namespace
|
|
|
|
StringRef path_join(BlockAllocator &balloc, const StringRef &base_path,
|
|
const StringRef &base_query, const StringRef &rel_path,
|
|
const StringRef &rel_query) {
|
|
auto res = make_byte_ref(
|
|
balloc, std::max(static_cast<size_t>(1), base_path.size()) +
|
|
rel_path.size() + 1 +
|
|
std::max(base_query.size(), rel_query.size()) + 1);
|
|
auto p = res.base;
|
|
|
|
if (rel_path.empty()) {
|
|
if (base_path.empty()) {
|
|
*p++ = '/';
|
|
} else {
|
|
p = std::copy(std::begin(base_path), std::end(base_path), p);
|
|
}
|
|
if (rel_query.empty()) {
|
|
if (!base_query.empty()) {
|
|
*p++ = '?';
|
|
p = std::copy(std::begin(base_query), std::end(base_query), p);
|
|
}
|
|
*p = '\0';
|
|
return StringRef{res.base, p};
|
|
}
|
|
*p++ = '?';
|
|
p = std::copy(std::begin(rel_query), std::end(rel_query), p);
|
|
*p = '\0';
|
|
return StringRef{res.base, p};
|
|
}
|
|
|
|
auto first = std::begin(rel_path);
|
|
auto last = std::end(rel_path);
|
|
|
|
if (rel_path[0] == '/') {
|
|
*p++ = '/';
|
|
++first;
|
|
for (; first != last && *first == '/'; ++first)
|
|
;
|
|
} else if (base_path.empty()) {
|
|
*p++ = '/';
|
|
} else {
|
|
p = std::copy(std::begin(base_path), std::end(base_path), p);
|
|
}
|
|
|
|
for (; first != last;) {
|
|
if (*first == '.') {
|
|
if (first + 1 == last) {
|
|
break;
|
|
}
|
|
if (*(first + 1) == '/') {
|
|
first += 2;
|
|
continue;
|
|
}
|
|
if (*(first + 1) == '.') {
|
|
if (first + 2 == last) {
|
|
p = eat_dir(res.base, p);
|
|
break;
|
|
}
|
|
if (*(first + 2) == '/') {
|
|
p = eat_dir(res.base, p);
|
|
first += 3;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (*(p - 1) != '/') {
|
|
p = eat_file(res.base, p);
|
|
}
|
|
auto slash = std::find(first, last, '/');
|
|
if (slash == last) {
|
|
p = std::copy(first, last, p);
|
|
break;
|
|
}
|
|
p = std::copy(first, slash + 1, p);
|
|
first = slash + 1;
|
|
for (; first != last && *first == '/'; ++first)
|
|
;
|
|
}
|
|
if (!rel_query.empty()) {
|
|
*p++ = '?';
|
|
p = std::copy(std::begin(rel_query), std::end(rel_query), p);
|
|
}
|
|
*p = '\0';
|
|
return StringRef{res.base, p};
|
|
}
|
|
|
|
StringRef normalize_path(BlockAllocator &balloc, const StringRef &path,
|
|
const StringRef &query) {
|
|
// First, decode %XX for unreserved characters, then do
|
|
// http2::path_join
|
|
|
|
// We won't find %XX if length is less than 3.
|
|
if (path.size() < 3 ||
|
|
std::find(std::begin(path), std::end(path), '%') == std::end(path)) {
|
|
return path_join(balloc, StringRef{}, StringRef{}, path, query);
|
|
}
|
|
|
|
// includes last terminal NULL.
|
|
auto result = make_byte_ref(balloc, path.size() + 1);
|
|
auto p = result.base;
|
|
|
|
auto it = std::begin(path);
|
|
for (; it + 2 < std::end(path);) {
|
|
if (*it == '%') {
|
|
if (util::is_hex_digit(*(it + 1)) && util::is_hex_digit(*(it + 2))) {
|
|
auto c =
|
|
(util::hex_to_uint(*(it + 1)) << 4) + util::hex_to_uint(*(it + 2));
|
|
if (util::in_rfc3986_unreserved_chars(c)) {
|
|
*p++ = c;
|
|
|
|
it += 3;
|
|
|
|
continue;
|
|
}
|
|
*p++ = '%';
|
|
*p++ = util::upcase(*(it + 1));
|
|
*p++ = util::upcase(*(it + 2));
|
|
|
|
it += 3;
|
|
|
|
continue;
|
|
}
|
|
}
|
|
*p++ = *it++;
|
|
}
|
|
|
|
p = std::copy(it, std::end(path), p);
|
|
*p = '\0';
|
|
|
|
return path_join(balloc, StringRef{}, StringRef{}, StringRef{result.base, p},
|
|
query);
|
|
}
|
|
|
|
StringRef normalize_path_colon(BlockAllocator &balloc, const StringRef &path,
|
|
const StringRef &query) {
|
|
// First, decode %XX for unreserved characters and ':', then do
|
|
// http2::path_join
|
|
|
|
// We won't find %XX if length is less than 3.
|
|
if (path.size() < 3 ||
|
|
std::find(std::begin(path), std::end(path), '%') == std::end(path)) {
|
|
return path_join(balloc, StringRef{}, StringRef{}, path, query);
|
|
}
|
|
|
|
// includes last terminal NULL.
|
|
auto result = make_byte_ref(balloc, path.size() + 1);
|
|
auto p = result.base;
|
|
|
|
auto it = std::begin(path);
|
|
for (; it + 2 < std::end(path);) {
|
|
if (*it == '%') {
|
|
if (util::is_hex_digit(*(it + 1)) && util::is_hex_digit(*(it + 2))) {
|
|
auto c =
|
|
(util::hex_to_uint(*(it + 1)) << 4) + util::hex_to_uint(*(it + 2));
|
|
if (util::in_rfc3986_unreserved_chars(c) || c == ':') {
|
|
*p++ = c;
|
|
|
|
it += 3;
|
|
|
|
continue;
|
|
}
|
|
*p++ = '%';
|
|
*p++ = util::upcase(*(it + 1));
|
|
*p++ = util::upcase(*(it + 2));
|
|
|
|
it += 3;
|
|
|
|
continue;
|
|
}
|
|
}
|
|
*p++ = *it++;
|
|
}
|
|
|
|
p = std::copy(it, std::end(path), p);
|
|
*p = '\0';
|
|
|
|
return path_join(balloc, StringRef{}, StringRef{}, StringRef{result.base, p},
|
|
query);
|
|
}
|
|
|
|
std::string normalize_path(const StringRef &path, const StringRef &query) {
|
|
BlockAllocator balloc(1024, 1024);
|
|
|
|
return normalize_path(balloc, path, query).str();
|
|
}
|
|
|
|
StringRef rewrite_clean_path(BlockAllocator &balloc, const StringRef &src) {
|
|
if (src.empty() || src[0] != '/') {
|
|
return src;
|
|
}
|
|
// probably, not necessary most of the case, but just in case.
|
|
auto fragment = std::find(std::begin(src), std::end(src), '#');
|
|
auto raw_query = std::find(std::begin(src), fragment, '?');
|
|
auto query = raw_query;
|
|
if (query != fragment) {
|
|
++query;
|
|
}
|
|
return normalize_path(balloc, StringRef{std::begin(src), raw_query},
|
|
StringRef{query, fragment});
|
|
}
|
|
|
|
StringRef copy_lower(BlockAllocator &balloc, const StringRef &src) {
|
|
auto iov = make_byte_ref(balloc, src.size() + 1);
|
|
auto p = iov.base;
|
|
p = std::copy(std::begin(src), std::end(src), p);
|
|
*p = '\0';
|
|
util::inp_strlower(iov.base, p);
|
|
return StringRef{iov.base, p};
|
|
}
|
|
|
|
bool contains_trailers(const StringRef &s) {
|
|
constexpr auto trailers = StringRef::from_lit("trailers");
|
|
|
|
for (auto p = std::begin(s), end = std::end(s);; ++p) {
|
|
p = std::find_if(p, end, [](char c) { return c != ' ' && c != '\t'; });
|
|
if (p == end || static_cast<size_t>(end - p) < trailers.size()) {
|
|
return false;
|
|
}
|
|
if (util::strieq(trailers, StringRef{p, p + trailers.size()})) {
|
|
// Make sure that there is no character other than white spaces
|
|
// before next "," or end of string.
|
|
p = std::find_if(p + trailers.size(), end,
|
|
[](char c) { return c != ' ' && c != '\t'; });
|
|
if (p == end || *p == ',') {
|
|
return true;
|
|
}
|
|
}
|
|
// Skip to next ",".
|
|
p = std::find_if(p, end, [](char c) { return c == ','; });
|
|
if (p == end) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
StringRef make_websocket_accept_token(uint8_t *dest, const StringRef &key) {
|
|
static constexpr uint8_t magic[] = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
|
|
std::array<uint8_t, base64::encode_length(16) + str_size(magic)> s;
|
|
auto p = std::copy(std::begin(key), std::end(key), std::begin(s));
|
|
std::copy_n(magic, str_size(magic), p);
|
|
|
|
std::array<uint8_t, 20> h;
|
|
if (util::sha1(h.data(), StringRef{std::begin(s), std::end(s)}) != 0) {
|
|
return StringRef{};
|
|
}
|
|
|
|
auto end = base64::encode(std::begin(h), std::end(h), dest);
|
|
return StringRef{dest, end};
|
|
}
|
|
|
|
bool legacy_http1(int major, int minor) {
|
|
return major <= 0 || (major == 1 && minor == 0);
|
|
}
|
|
|
|
} // namespace http2
|
|
|
|
} // namespace nghttp2
|