From: Christian Hofstaedtler Date: Mon, 21 Oct 2013 19:23:24 +0000 (+0200) Subject: Import Aki Tuomi's yahttp X-Git-Tag: rec-3.6.0-rc1~354^2~2 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d87f6e267aee286248cba1c26b081b928b08bb6a;p=pdns Import Aki Tuomi's yahttp --- diff --git a/pdns/ext/yahttp/.gitignore b/pdns/ext/yahttp/.gitignore new file mode 100644 index 000000000..69059d61c --- /dev/null +++ b/pdns/ext/yahttp/.gitignore @@ -0,0 +1,2 @@ +yahttp/libyahttp.a +*.o diff --git a/pdns/ext/yahttp/LICENSE b/pdns/ext/yahttp/LICENSE new file mode 100644 index 000000000..56189a2a5 --- /dev/null +++ b/pdns/ext/yahttp/LICENSE @@ -0,0 +1,502 @@ +GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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+ virtual ~ParseError() throw() {}; + + virtual const char* what() const throw() + { + return reason.c_str(); + } + const std::string reason; + }; +}; + +#endif diff --git a/pdns/ext/yahttp/yahttp/reqresp.cpp b/pdns/ext/yahttp/yahttp/reqresp.cpp new file mode 100644 index 000000000..0c7a0c6c3 --- /dev/null +++ b/pdns/ext/yahttp/yahttp/reqresp.cpp @@ -0,0 +1,301 @@ +#include "reqresp.hpp" + +namespace YaHTTP { + + void Request::build(const std::string &method, const std::string &url, const std::string ¶ms) { + this->method = method; + std::transform(this->method.begin(), this->method.end(), this->method.begin(), ::toupper); + this->url.parse(url); + this->headers["host"] = this->url.host; + this->headers["connection"] = "close"; + this->headers["user-agent"] = "yahttp 0.1"; + this->headers["accept"] = "*/*"; + if (params.empty() == false) { + this->headers["content-type"] = "application/x-www-form-urlencoded; charset=utf-8"; + this->headers["content-length"] = params.size(); + this->body = params; + } else { + this->body = ""; + } + }; + + Request::Request() {}; + Request::Request(const Response &resp) { + method = resp.method; + url = resp.url; + cookies = resp.cookies; + }; + Request::Request(const Request &req) { + method = req.method; + url = req.url; + parameters = req.parameters; + headers = req.headers; + cookies = req.cookies; + body = req.body; + }; + Request::~Request() {}; + + Response::Response() {}; + Response::Response(const Request &req) { + headers["connection"] = "close"; + method = req.method; + url = req.url; + cookies = req.cookies; + status = 200; + }; + Response::Response(const Response &resp) { + method = resp.method; + url = resp.url; + parameters = resp.parameters; + headers = resp.headers; + cookies = resp.cookies; + body = resp.body; + status = resp.status; + statusText = resp.statusText; + }; + Response::~Response() {}; + + void Response::load(std::istream &is) { + AsyncResponseLoader arl(this); + while(is.good()) { + char buf[1024]; + is.read(buf, 1024); + if (is.gcount()) { // did we actually read anything + is.clear(); + if (arl.feed(std::string(buf, is.gcount())) == true) return; // completed + } + } + // FIXME: parse cookies + }; + + void Response::write(std::ostream &os) const { + os << "HTTP/1.1 " << status << " "; + if (statusText.empty()) + os << Utility::status2text(status); + else + os << statusText; + os << "\r\n"; + + // write headers + strstr_map_t::const_iterator iter = headers.begin(); + while(iter != headers.end()) { + os << Utility::camelizeHeader(iter->first) << ": " << iter->second << "\r\n"; + iter++; + } + os << "\r\n"; + os << body; + }; + + void Request::load(std::istream &is) { + AsyncRequestLoader arl(this); + while(is.good()) { + char buf[1024]; + is.read(buf, 1024); + if (is.gcount()) { // did we actually read anything + is.clear(); + if (arl.feed(std::string(buf, is.gcount())) == true) return; // completed + } + } + }; + + void Request::write(std::ostream &os) const { + os << method << " " << url.path << " HTTP/1.1" << "\r\n"; + strstr_map_t::const_iterator iter = headers.begin(); + while(iter != headers.end()) { + os << Utility::camelizeHeader(iter->first) << ": " << iter->second << "\r\n"; + iter++; + } + os << "\r\n"; + if (body.size()>0) { + os << body; + } + }; + + std::ostream& operator<<(std::ostream& os, const Response &resp) { + resp.write(os); + return os; + }; + + std::istream& operator>>(std::istream& is, Response &resp) { + resp.load(is); + return is; + }; + + std::ostream& operator<<(std::ostream& os, const Request &req) { + req.write(os); + return os; + }; + + std::istream& operator>>(std::istream& is, Request &req) { + req.load(is); + return is; + }; + + bool AsyncRequestLoader::feed(const std::string &somedata) { + size_t pos; + + buffer.append(somedata); + while(state < 2) { + // need to find newline in buffer + if ((pos = buffer.find("\r\n")) == std::string::npos) return false; + std::string line(buffer.begin(), buffer.begin()+pos); // exclude CRLF + buffer.erase(buffer.begin(), buffer.begin()+pos+2); // remove line from buffer including CRLF + if (state == 0) { // startup line + std::string ver; + std::string tmpurl; + std::istringstream iss(line); + iss >> request->method >> tmpurl >> ver; + if (ver.find("HTTP/1.") != 0) + throw ParseError("Not a HTTP 1.x request"); + // uppercase the request method + std::transform(request->method.begin(), request->method.end(), request->method.begin(), ::toupper); + request->url.parse(tmpurl); + request->parameters = Utility::parseUrlParameters(request->url.parameters); + state = 1; + } else if (state == 1) { + std::string key,value; + size_t pos; + if (line.empty()) { + chunked = (request->headers.find("transfer-encoding") != request->headers.end() && request->headers["transfer-encoding"] == "chunked"); + // host header is optional + if (request->headers.find("host") != request->headers.end()) + request->url.host = request->headers["host"]; + + state = 2; + break; + } + // split headers + if ((pos = line.find_first_of(": ")) == std::string::npos) + throw ParseError("Malformed line"); + key = line.substr(0, pos); + value = line.substr(pos+2); + std::transform(key.begin(), key.end(), key.begin(), ::tolower); + request->headers[key] = value; + } + } + + if (request->method != "POST") + return true; + + // do we have content-length? + if (!chunked) { + if (request->headers.find("content-length") != request->headers.end()) { + std::istringstream maxbodyS(request->headers["content-length"]); + maxbodyS >> maxbody; + } + if (maxbody < 1) return true; // guess there isn't anything left. + if (maxbody > YAHTTP_MAX_REQUEST_SIZE) + throw ParseError("Request size exceeded"); + } + + if (buffer.size() == 0) return false; + + while(buffer.size() > 0 && bodybuf.str().size() < static_cast(maxbody)) { + char buf[1024] = {0}; + + if (chunked) { + if (chunk_size == 0) { + // read chunk length + if ((pos = buffer.find('\n')) == std::string::npos) return false; + if (pos > 1023) + throw ParseError("Impossible chunk_size"); + buffer.copy(buf, pos); + buf[pos]=0; // just in case... + buffer.erase(buffer.begin(), buffer.begin()+pos+1); // remove line from buffer + sscanf(buf, "%x", &chunk_size); + if (!chunk_size) break; // last chunk + } else { + if (buffer.size() < static_cast(chunk_size+1)) return false; // expect newline + if (buffer.at(chunk_size) != '\n') return false; // there should be newline. + buffer.copy(buf, chunk_size); + buffer.erase(buffer.begin(), buffer.begin()+chunk_size+1); + bodybuf << buf; + chunk_size = 0; + if (buffer.size() == 0) return false; // just in case + } + } else { + bodybuf << buffer; + buffer = ""; + } + } + + if (chunk_size!=0) return false; // need more data + + bodybuf.flush(); + request->body = bodybuf.str(); + bodybuf.str(""); + return true; + }; + + bool AsyncResponseLoader::feed(const std::string &somedata) { + size_t pos; + buffer.append(somedata); + while(state < 2) { + // need to find CRLF in buffer + if ((pos = buffer.find("\r\n")) == std::string::npos) return false; + std::string line(buffer.begin(), buffer.begin()+pos); // exclude CRLF + buffer.erase(buffer.begin(), buffer.begin()+pos+2); // remove line from buffer including CRLF + if (state == 0) { // startup line + std::string ver; + std::istringstream iss(line); + iss >> ver >> response->status >> response->statusText; + if (ver.find("HTTP/1.") != 0) + throw ParseError("Not a HTTP 1.x response"); + state = 1; + } else if (state == 1) { + std::string key,value; + size_t pos; + if (line.empty()) { + chunked = (response->headers.find("transfer-encoding") != response->headers.end() && response->headers["transfer-encoding"] == "chunked"); + state = 2; + break; + } + // split headers + if ((pos = line.find_first_of(": ")) == std::string::npos) + throw ParseError("Malformed header line"); + key = line.substr(0, pos); + value = line.substr(pos+2); + std::transform(key.begin(), key.end(), key.begin(), ::tolower); + response->headers[key] = value; + } + } + + if (buffer.size() == 0) return false; + + while(buffer.size() > 0) { + char buf[1024] = {0}; + + if (chunked) { + if (chunk_size == 0) { + // read chunk length + if ((pos = buffer.find('\n')) == std::string::npos) return false; + if (pos > 1023) + throw ParseError("Impossible chunk_size"); + buffer.copy(buf, pos); + buf[pos]=0; // just in case... + buffer.erase(buffer.begin(), buffer.begin()+pos+1); // remove line from buffer + sscanf(buf, "%x", &chunk_size); + if (!chunk_size) break; // last chunk + } else { + if (buffer.size() < static_cast(chunk_size+1)) return false; // expect newline + if (buffer.at(chunk_size) != '\n') return false; // there should be newline. + buffer.copy(buf, chunk_size); + buffer.erase(buffer.begin(), buffer.begin()+chunk_size+1); + bodybuf << buf; + chunk_size = 0; + if (buffer.size() == 0) return false; // just in case + } + } else { + bodybuf << buffer; + buffer = ""; + } + } + + if (chunk_size!=0) return false; // need more data + + bodybuf.flush(); + response->body = bodybuf.str(); + bodybuf.str(""); + return true; + }; +}; diff --git a/pdns/ext/yahttp/yahttp/reqresp.hpp b/pdns/ext/yahttp/yahttp/reqresp.hpp new file mode 100644 index 000000000..0279510d2 --- /dev/null +++ b/pdns/ext/yahttp/yahttp/reqresp.hpp @@ -0,0 +1,108 @@ +#include +#include +#include +#include + +#include "url.hpp" +#include "utility.hpp" +#include "exception.hpp" + +#ifndef YAHTTP_MAX_REQUEST_SIZE +#define YAHTTP_MAX_REQUEST_SIZE 2097152 +#endif + +namespace YaHTTP { + typedef std::map strstr_map_t; + + class Response; + class Request; + class AsyncResponseLoader; + class AsyncRequestLoader; + + class Request { + public: + Request(); + Request(const Response &resp); + Request(const Request &req); + ~Request(); + + void build(const std::string &method, const std::string &url, const std::string ¶ms); + + void load(std::istream &is); + void write(std::ostream &os) const; + + strstr_map_t headers; + strstr_map_t parameters; + strstr_map_t cookies; + + URL url; + std::string method; + std::string body; + + friend std::istream& operator>>(std::istream& os, const Request &req); + friend std::ostream& operator<<(std::ostream& os, const Request &req); + friend class AsyncRequestLoader; + }; + + class Response { + public: + Response(); + Response(const Request &req); + Response(const Response &resp); + ~Response(); + void load(std::istream &is); + void write(std::ostream &os) const; + + strstr_map_t headers; + strstr_map_t parameters; + strstr_map_t cookies; + + URL url; + int status; + std::string statusText; + std::string method; + std::string body; + + friend std::istream& operator>>(std::istream& is, Response &resp); + friend std::ostream& operator<<(std::ostream& os, const Response &resp); + friend class AsyncResponseLoader; + }; + + class AsyncResponseLoader { + public: + AsyncResponseLoader(Response *response) { + state = 0; + chunked = false; + chunk_size = 0; + this->response = response; + }; + bool feed(const std::string &somedata); + private: + Response *response; + int state; + std::string buffer; + bool chunked; + int chunk_size; + std::ostringstream bodybuf; + }; + + class AsyncRequestLoader { + public: + AsyncRequestLoader(Request *request) { + state = 0; + chunked = false; + chunk_size = 0; + maxbody = 0; + this->request = request; + }; + bool feed(const std::string &somedata); + private: + Request *request; + int state; + std::string buffer; + bool chunked; + int chunk_size; + std::ostringstream bodybuf; + long maxbody; + }; +}; diff --git a/pdns/ext/yahttp/yahttp/url.hpp b/pdns/ext/yahttp/yahttp/url.hpp new file mode 100644 index 000000000..732e8e617 --- /dev/null +++ b/pdns/ext/yahttp/yahttp/url.hpp @@ -0,0 +1,183 @@ +#ifndef _YAHTTP_URL_HPP +#define _YAHTTP_URL_HPP 1 +#include +#include + +#include "utility.hpp" + +#ifndef YAHTTP_MAX_URL_LENGTH +#define YAHTTP_MAX_URL_LENGTH 2048 +#endif + +namespace YaHTTP { + class URL { + private: + bool parseSchema(const std::string& url, size_t &pos) { + size_t pos1; + if (pos >= url.size()) return false; // no data + if ( (pos1 = url.find_first_of(":",pos)) == std::string::npos ) return false; // schema is mandatory + protocol = url.substr(pos, pos1-pos); + if (protocol == "http") port = 80; + if (protocol == "https") port = 443; + pos = pos1+1; // after : + if (url.compare(pos, 2, "//") == 0) { + pathless = false; // if this is true we put rest into parameters + pos += 2; + } + return true; + } + + bool parseHost(const std::string& url, size_t &pos) { + size_t pos1; + if (pos >= url.size()) return true; // no data + if ( (pos1 = url.find_first_of("/", pos)) == std::string::npos ) { + host = url.substr(pos); + path = "/"; + pos = url.size(); + } else { + host = url.substr(pos, pos1-pos); + pos = pos1; + } + return true; + } + + bool parseUserPass(const std::string& url, size_t &pos) { + size_t pos1,pos2; + if (pos >= url.size()) return true; // no data + + if ( (pos1 = url.find_first_of("@",pos)) == std::string::npos ) return true; // no userinfo + pos2 = url.find_first_of(":",pos); + + if (pos2 != std::string::npos) { // comes with password + username = url.substr(pos, pos2 - pos); + password = url.substr(pos2+1, pos1 - pos2 - 1); + password = Utility::decodeURL(password); + } else { + username = url.substr(pos+1, pos1 - pos); + } + pos = pos1+1; + username = Utility::decodeURL(username); + return true; + }; + + bool parsePath(const std::string& url, size_t &pos) { + size_t pos1; + if (pos >= url.size()) return true; // no data + if (url[pos] != '/') return false; // not an url + if ( (pos1 = url.find_first_of("?", pos)) == std::string::npos ) { + path = url; + pos = url.size(); + } else { + path = url.substr(pos, pos1-pos); + pos = pos1; + } + path = Utility::decodeURL(path); + return true; + } + + bool parseParameters(const std::string& url, size_t &pos) { + size_t pos1; + if (pos >= url.size()) return true; // no data + if (url[pos] == '#') return true; // anchor starts here + if (url[pos] != '?') return false; // not a parameter + if ( (pos1 = url.find_first_of("#", pos)) == std::string::npos ) { + parameters = url.substr(pos+1);; + pos = url.size(); + } else { + parameters = url.substr(pos+1, pos1-pos-1); + pos = pos1; + } + return true; + } + + bool parseAnchor(const std::string& url, size_t &pos) { + if (pos >= url.size()) return true; // no data + if (url[pos] != '#') return false; // not anchor + anchor = url.substr(pos+1); + return true; + } + + public: + std::string to_string() const { + std::string tmp; + std::ostringstream oss; + + if (protocol.empty() == false) { + oss << protocol << ":"; + if (host.empty() == false) { + oss << "//"; + } + } + + if (username.empty() == false) { + if (password.empty() == false) + oss << Utility::encodeURL(username) << ":" << Utility::encodeURL(password) << "@"; + else + oss << Utility::encodeURL(username) << "@"; + } + if (host.empty() == false) + oss << host; + if (!(protocol == "http" && port == 80) && + !(protocol == "https" && port == 443) && + port > 0) + oss << ":" << port; + + oss << Utility::encodeURL(path, true); + if (parameters.empty() == false) { + if (!pathless) + oss << "?"; + oss << parameters; + } + if (anchor.empty() == false) + oss << "#" << anchor; + return oss.str(); + } + + std::string protocol; + std::string host; + int port; + std::string username; + std::string password; + std::string path; + std::string parameters; + std::string anchor; + bool pathless; + + URL() { protocol = ""; host = ""; port = 0; username = ""; password = ""; path = ""; parameters = ""; anchor =""; pathless = true; }; + URL(const std::string& url) { + parse(url); + }; + + URL(const char *url) { + parse(std::string(url)); + }; + + bool parse(const std::string& url) { + // setup + protocol = ""; host = ""; port = 0; + username = ""; password = ""; path = ""; + parameters = ""; anchor =""; pathless = true; + + if (url.size() > YAHTTP_MAX_URL_LENGTH) return false; + size_t pos = 0; + if (*(url.begin()) != '/') { // full url? + if (parseSchema(url, pos) == false) return false; + if (pathless) { + parameters = url.substr(pos); + return true; + } + if (parseUserPass(url, pos) == false) return false; + if (parseHost(url, pos) == false) return false; + } + if (parsePath(url, pos) == false) return false; + if (parseParameters(url, pos) == false) return false; + return parseAnchor(url, pos); + }; + + friend std::ostream & operator<<(std::ostream& os, const URL& url) { + os< +#include +#include + +namespace YaHTTP { + class Utility { + public: + static std::string decodeURL(const std::string& component) { + std::string result = component; + size_t pos1,pos2; + pos2 = 0; + while((pos1 = result.find_first_of("%", pos2))!=std::string::npos) { + std::string code; + char a,b,c; + if (pos1 + 2 > result.length()) return result; // end of result + code = result.substr(pos1+1, 2); + a = std::tolower(code[0]); b = std::tolower(code[1]); + + if ((( '0' > a || a > '9') && ('a' > a || a > 'f')) || + (( '0' > b || b > '9') && ('a' > b || b > 'f'))) { + pos2 = pos1+3; + continue; + } + + if ('0' <= a && a <= '9') a = a - '0'; + if ('a' <= a && a <= 'f') a = a - 'a' + 0x0a; + if ('0' <= b && b <= '9') b = b - '0'; + if ('a' <= b && b <= 'f') b = b - 'a' + 0x0a; + + c = (a<<4)+b; + result = result.replace(pos1,3,1,c); + pos2=pos1; + } + return result; + }; + + static std::string encodeURL(const std::string& component, bool encodeSlash = true) { + std::string result = component; + char repl[3]; + size_t pos; + for(std::string::iterator iter = result.begin(); iter != result.end(); iter++) { + if (*iter != '+' && !(encodeSlash == false || *iter == '/') && !std::isalnum(*iter)) { + // replace with different thing + pos = std::distance(result.begin(), iter); + std::snprintf(repl,3,"%02x", *iter); + result = result.replace(pos, 1, "%", 1).insert(pos+1, repl, 2); + iter = result.begin() + pos + 2; + } + } + return result; + }; + + static std::string status2text(int status) { + switch(status) { + case 200: + return "OK"; + case 201: + return "Created"; + case 202: + return "Accepted"; + case 203: + return "Non-Authoritative Information"; + case 204: + return "No Content"; + case 205: + return "Reset Content"; + case 206: + return "Partial Content"; + case 300: + return "Multiple Choices"; + case 301: + return "Moved Permanently"; + case 302: + return "Found"; + case 303: + return "See Other"; + case 304: + return "Not Modified"; + case 305: + return "Use Proxy"; + case 307: + return "Temporary Redirect"; + case 400: + return "Bad Request"; + case 401: + return "Unauthorized"; + case 402: + return "Payment Required"; + case 403: + return "Forbidden"; + case 404: + return "Not Found"; + case 405: + return "Method Not Allowed"; + case 406: + return "Not Acceptable"; + case 407: + return "Proxy Authentication Required"; + case 408: + return "Request Time-out"; + case 409: + return "Conflict"; + case 410: + return "Gone"; + case 411: + return "Length Required"; + case 412: + return "Precondition Failed"; + case 413: + return "Request Entity Too Large"; + case 414: + return "Request-URI Too Large"; + case 415: + return "Unsupported Media Type"; + case 416: + return "Requested range not satisfiable"; + case 417: + return "Expectation Failed"; + case 500: + return "Internal Server Error"; + case 501: + return "Not Implemented"; + case 502: + return "Bad Gateway"; + case 503: + return "Service Unavailable"; + case 504: + return "Gateway Time-out"; + case 505: + return "HTTP Version not supported"; + default: + return "Unknown Status"; + } + }; + + static std::map parseUrlParameters(std::string parameters) { + std::string::size_type pos = 0; + std::map parameter_map; + while (pos != std::string::npos) { + // find next parameter start + std::string::size_type nextpos = parameters.find("&", pos); + std::string::size_type delim = parameters.find("=", pos); + if (delim > nextpos) { + delim = nextpos; + } + std::string key; + std::string value; + if (delim == std::string::npos) { + key = parameters.substr(pos); + } else { + key = parameters.substr(pos, delim-pos); + if (nextpos == std::string::npos) { + value = parameters.substr(delim+1); + } else { + value = parameters.substr(delim+1, nextpos-delim); + } + } + if (key.empty()) { + // no parameters at all + break; + } + key = decodeURL(key); + value = decodeURL(value); + parameter_map[key] = value; + + pos = nextpos; + } + return parameter_map; + }; + + static void trim_right(std::string &str) { + const std::locale &loc = std::locale::classic(); + std::string::reverse_iterator iter = str.rbegin(); + while(iter != str.rend() && std::isspace(*iter, loc)) iter++; + str.erase(iter.base(), str.end()); + }; + + static std::string camelizeHeader(const std::string &str) { + std::string::const_iterator iter = str.begin(); + std::string result; + const std::locale &loc = std::locale::classic(); + + bool doNext = true; + + while(iter != str.end()) { + if (doNext) + result.insert(result.end(), std::toupper(*iter, loc)); + else + result.insert(result.end(), std::tolower(*iter, loc)); + doNext = (*(iter++) == '-'); + } + + return result; + }; + }; +}; +#endif diff --git a/pdns/ext/yahttp/yahttp/yahttp.hpp b/pdns/ext/yahttp/yahttp/yahttp.hpp new file mode 100644 index 000000000..8ab0458a6 --- /dev/null +++ b/pdns/ext/yahttp/yahttp/yahttp.hpp @@ -0,0 +1,3 @@ +#include "utility.hpp" +#include "url.hpp" +#include "reqresp.hpp"