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/* ============================================================================ |
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* Douglas Thrift's Search Engine License |
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* |
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* Copyright (C) 2002-2003, Douglas Thrift. All Rights Reserved. |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if any, must |
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* include the following acknowledgment: |
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* |
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* "This product includes software developed by Douglas Thrift |
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* (http://computers.douglasthrift.net/searchengine/)." |
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* |
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* Alternately, this acknowledgment may appear in the software itself, if |
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* and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Douglas Thrift" and "Douglas Thrift's Search Engine" must not |
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* be used to endorse or promote products derived from this software without |
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* specific prior written permission. For written permission, please visit |
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* http://www.douglasthrift.net/contact.cgi for contact information. |
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* |
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* 5. Products derived from this software may not be called "Douglas Thrift's |
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* Search Engine", nor may "Douglas Thrift's Search Engine" appear in their |
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* name, without prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ============================================================================ |
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*/ |
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// Douglas Thrift's Search Engine HTTP Handler |
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// |
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// Douglas Thrift |
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// |
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// $Id: HttpHandler.cpp,v 1.22 2003/07/20 01:46:12 douglas Exp $ |
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|
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#include "HttpHandler.h" |
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|
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// Lovely C Sockets! |
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#ifndef _WIN32 |
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// BSD Sockets |
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#include <unistd.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <netdb.h> |
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#endif |
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|
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HttpHandler::HttpHandler() |
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{ |
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buffer = new char[BUFSIZ + 1]; |
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|
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#ifdef _WIN32 |
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if (WSAStartup(MAKEWORD(2, 0), &data) != 0) |
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{ |
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error(program + ": WSAStartup"); |
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exit(1); |
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} |
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#endif // _WIN32 |
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|
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binary = false; |
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length = 0; |
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chunked = false; |
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#ifdef _OpenSSL_ |
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tls = false; |
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#endif |
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} |
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|
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HttpHandler::~HttpHandler() |
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{ |
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delete [] buffer; |
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|
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#ifdef _WIN32 |
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WSACleanup(); |
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#endif // _WIN32 |
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} |
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|
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bool HttpHandler::handle(URL &url, const string referer, bool head) |
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{ |
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bool answer = false; |
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|
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if ((http = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) |
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{ |
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error(program + ": Socket"); |
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exit(1); |
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} |
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|
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sockaddr_in address; |
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hostent* host; |
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|
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address.sin_family = AF_INET; |
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|
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if ((host = gethostbyname(url.getAddress().c_str())) == NULL) |
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{ |
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error(program + ": Host: " + url.getAddress(), true); |
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return answer; |
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} |
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|
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address.sin_addr = *((in_addr*)*host->h_addr_list); |
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address.sin_port = htons(url.getPort()); |
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|
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if (connect(http, (sockaddr*)&address, sizeof(sockaddr_in)) == |
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SOCKET_ERROR) |
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{ |
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error(program + ": Connect"); |
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return answer; |
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} |
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|
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#ifdef _OpenSSL_ |
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if (url.getTls()) |
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{ |
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tls = true; |
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|
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if (!starttls()) return answer; |
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} |
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#endif |
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|
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if (head) |
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{ |
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putline("HEAD " + url.getPath() + " HTTP/1.1"); |
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} |
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else |
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{ |
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putline("GET " + url.getPath() + " HTTP/1.1"); |
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} |
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|
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putline("Accept: text/html; text/plain"); |
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#ifndef _OpenSSL_ |
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putline("User-Agent: " + agent(true) + ' ' + platform()); |
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|
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if (url.getPort() == 80) |
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#else |
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putline("User-Agent: " + agent(true) + ' ' + platform() + ' ' |
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+ openssl(true)); |
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|
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if (url.getPort() == 80 && tls || url.getPort() == 443 && tls) |
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#endif |
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{ |
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putline("Host: " + url.getAddress()); |
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} |
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else |
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{ |
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ostringstream port; |
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|
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port << url.getPort(); |
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|
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putline("Host: " + url.getAddress() + ':' + port.str()); |
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} |
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|
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if (referer != "") |
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{ |
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putline("Referer: " + referer); |
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} |
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|
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putline("Connection: close"); |
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putline(); |
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|
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code response; |
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string line; |
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|
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do |
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{ |
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line = getline(); |
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|
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if (line.find("HTTP/") != 0) |
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{ |
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return answer; |
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} |
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|
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unsigned dot = line.find('.'); |
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unsigned space = line.find(' '); |
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|
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unsigned major = strtoul(line.substr(5, dot - 5).c_str(), 0, 10); |
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unsigned minor = strtoul(line.substr(dot + 1, space - dot - 1).c_str(), |
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0, 10); |
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|
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if (major > 1) |
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{ |
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cerr << program << ": Potentially Incompatible Server: HTTP/" << |
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major << "." << minor << "\n"; |
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|
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return answer; |
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} |
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|
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response = code(strtoul(line.substr(space + 1).c_str(), 0, 10)); |
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|
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if (response < ok) do line = getline(); while (line != ""); |
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} |
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while (response < ok); |
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|
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do |
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{ |
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line = getline(); |
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|
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if (line != "") |
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{ |
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unsigned colon = line.find(':'); |
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|
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string field = line.substr(0, colon); |
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string value = line.substr(colon + 1); |
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|
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while (isspace(value[0])) value.erase(0, 1); |
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|
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if (field == "Content-Type") |
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{ |
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type = value; |
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} |
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else if (field == "Content-Length") |
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{ |
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length = strtoul(value.c_str(), 0, 10); |
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} |
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else if (field == "Location") |
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{ |
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location = value; |
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} |
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else if (field == "Transfer-Encoding") |
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{ |
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chunked = value == "chunked"; |
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} |
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} |
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} |
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while (line != ""); |
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|
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switch (response) |
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{ |
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case ok: |
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if (debug) cerr << "response = " << response << "\n"; |
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answer = true; |
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break; |
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case choices: |
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case moved: |
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case found: |
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if (debug) cerr << "response = " << response << "\n" |
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<< "location = " << location << "\n"; |
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location = getLink(location, url); |
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break; |
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case notfound: |
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case internal: |
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if (debug) cerr << "response = " << response << "\n"; |
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break; |
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default: |
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if (debug) cerr << "response = " << response << "\n"; |
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if (response <= 299) |
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{ |
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answer = true; |
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} |
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else if (response <= 399) |
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{ |
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location = getLink(location, url); |
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} |
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break; |
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} |
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|
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if (!head && answer) populate(); |
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|
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return answer; |
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} |
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|
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void HttpHandler::clear() |
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{ |
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if (tls) |
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{ |
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SSL_shutdown(ssl); |
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SSL_free(ssl); |
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SSL_CTX_free(ctx); |
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} |
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|
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closesocket(http); |
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|
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type = ""; |
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length = 0; |
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location = ""; |
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page.clear(); |
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page.str(""); |
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chunked = false; |
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#ifdef _OpenSSL_ |
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tls = false; |
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#endif |
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} |
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|
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void HttpHandler::populate() |
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{ |
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if (!chunked) |
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{ |
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unsigned left = length; |
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|
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while (left > 0) |
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{ |
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memset(buffer, 0, BUFSIZ + 1); |
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|
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unsigned bytes = left > BUFSIZ ? BUFSIZ : left; |
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long received; |
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|
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while (true) |
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{ |
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#ifndef _OpenSSL_ |
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if ((received = recv(http, buffer, bytes, 0)) == SOCKET_ERROR) |
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{ |
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error(program + ": Recv"); |
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exit(1); |
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} |
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#else |
| 317 |
if ((received = !tls ? recv(http, buffer, bytes, 0) : |
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SSL_read(ssl, buffer, bytes)) <= 0) |
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{ |
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!tls ? error(program + ": Recv") : error(program + |
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": SSL Read", int(received)); |
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} |
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#endif |
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else if (received != bytes) |
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{ |
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left -= received; |
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page << buffer; |
| 328 |
|
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memset(buffer, 0, BUFSIZ + 1); |
| 330 |
|
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bytes -= received; |
| 332 |
} |
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else |
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{ |
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break; |
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} |
| 337 |
} |
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|
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page << buffer; |
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left -= bytes; |
| 341 |
} |
| 342 |
} |
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else |
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{ |
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unsigned chunk; |
| 346 |
|
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do |
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{ |
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chunk = strtoul(getline().c_str(), 0, 16); |
| 350 |
|
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unsigned left = chunk; |
| 352 |
|
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while (left > 0) |
| 354 |
{ |
| 355 |
memset(buffer, 0, BUFSIZ + 1); |
| 356 |
|
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unsigned bytes = left > BUFSIZ ? BUFSIZ : left; |
| 358 |
long received; |
| 359 |
|
| 360 |
while (true) |
| 361 |
{ |
| 362 |
#ifndef _OpenSSL_ |
| 363 |
if ((received = recv(http, buffer, bytes, 0)) == |
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SOCKET_ERROR) |
| 365 |
{ |
| 366 |
error(program + ": Recv"); |
| 367 |
exit(1); |
| 368 |
} |
| 369 |
#else |
| 370 |
if ((received = !tls ? recv(http, buffer, bytes, 0) : |
| 371 |
SSL_read(ssl, buffer, bytes)) <= 0) |
| 372 |
{ |
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!tls ? error(program + ": Recv") : error(program + |
| 374 |
": SSL Read", int(received)); |
| 375 |
exit(1); |
| 376 |
} |
| 377 |
#endif |
| 378 |
else if (received != bytes) |
| 379 |
{ |
| 380 |
left -= received; |
| 381 |
page << buffer; |
| 382 |
|
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memset(buffer, 0, BUFSIZ + 1); |
| 384 |
|
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bytes -= received; |
| 386 |
} |
| 387 |
else |
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{ |
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break; |
| 390 |
} |
| 391 |
} |
| 392 |
|
| 393 |
page << buffer; |
| 394 |
left -= bytes; |
| 395 |
} |
| 396 |
|
| 397 |
getline(); |
| 398 |
length += chunk; |
| 399 |
} |
| 400 |
while (chunk > 0); |
| 401 |
} |
| 402 |
|
| 403 |
if (!binary) |
| 404 |
{ |
| 405 |
string page = this->page.str(); |
| 406 |
|
| 407 |
for (unsigned index = 0; index < page.length(); index++) |
| 408 |
{ |
| 409 |
if (page[index] == '\r' && (index + 1 < page.length()) ? page[index + |
| 410 |
1] == '\n' : false) |
| 411 |
{ |
| 412 |
page.erase(index, 1); |
| 413 |
} |
| 414 |
else if (page[index] == '\r') |
| 415 |
{ |
| 416 |
page[index] = '\n'; |
| 417 |
} |
| 418 |
} |
| 419 |
|
| 420 |
this->page.str(page); |
| 421 |
} |
| 422 |
} |
| 423 |
|
| 424 |
void HttpHandler::putline(const string line) |
| 425 |
{ |
| 426 |
sprintf(buffer, "%s\r\n", line.c_str()); |
| 427 |
|
| 428 |
#ifndef _OpenSSL_ |
| 429 |
if (send(http, buffer, strlen(buffer), 0) == SOCKET_ERROR) |
| 430 |
{ |
| 431 |
error(program + ": Send"); |
| 432 |
exit(1); |
| 433 |
} |
| 434 |
#else |
| 435 |
if (!tls) |
| 436 |
{ |
| 437 |
if (send(http, buffer, strlen(buffer), 0) == SOCKET_ERROR) |
| 438 |
{ |
| 439 |
error(program + ": Send"); |
| 440 |
exit(1); |
| 441 |
} |
| 442 |
} |
| 443 |
else |
| 444 |
{ |
| 445 |
int number; |
| 446 |
|
| 447 |
if ((number = SSL_write(ssl, buffer, strlen(buffer))) <= 0) |
| 448 |
{ |
| 449 |
error(program + ": SSL Write", number); |
| 450 |
exit(1); |
| 451 |
} |
| 452 |
} |
| 453 |
#endif |
| 454 |
} |
| 455 |
|
| 456 |
string HttpHandler::getline() |
| 457 |
{ |
| 458 |
string line; |
| 459 |
char byte; |
| 460 |
|
| 461 |
do |
| 462 |
{ |
| 463 |
#ifndef _OpenSSL_ |
| 464 |
if (recv(http, &byte, 1, 0) == SOCKET_ERROR) |
| 465 |
{ |
| 466 |
error(program + ": Recv"); |
| 467 |
} |
| 468 |
#else |
| 469 |
if (!tls) |
| 470 |
{ |
| 471 |
if (recv(http, &byte, 1, 0) == SOCKET_ERROR) |
| 472 |
{ |
| 473 |
error(program + ": Recv"); |
| 474 |
} |
| 475 |
} |
| 476 |
else |
| 477 |
{ |
| 478 |
int number; |
| 479 |
|
| 480 |
if ((number = SSL_read(ssl, &byte, 1)) <= 0) |
| 481 |
{ |
| 482 |
error(program + ": SSL Read", number); |
| 483 |
} |
| 484 |
} |
| 485 |
#endif |
| 486 |
|
| 487 |
if (byte != '\r' && byte != '\n') |
| 488 |
{ |
| 489 |
line += byte; |
| 490 |
} |
| 491 |
} |
| 492 |
while (byte != '\n'); |
| 493 |
|
| 494 |
return line; |
| 495 |
} |
| 496 |
|
| 497 |
void HttpHandler::error(const string& prefix, bool host) |
| 498 |
{ |
| 499 |
#ifdef _WIN32 |
| 500 |
string error; |
| 501 |
|
| 502 |
switch (WSAGetLastError()) |
| 503 |
{ |
| 504 |
case WSAEACCES: |
| 505 |
error = "Permission denied"; |
| 506 |
break; |
| 507 |
case WSAEADDRINUSE: |
| 508 |
error = "Address already in use"; |
| 509 |
break; |
| 510 |
case WSAEADDRNOTAVAIL: |
| 511 |
error = "Cannot assign requested address"; |
| 512 |
break; |
| 513 |
case WSAEAFNOSUPPORT: |
| 514 |
error = "Address family not supported by protocol family"; |
| 515 |
break; |
| 516 |
case WSAEALREADY: |
| 517 |
error = "Operation already in progress"; |
| 518 |
break; |
| 519 |
case WSAECONNABORTED: |
| 520 |
error = "Software caused connection abort"; |
| 521 |
break; |
| 522 |
case WSAECONNREFUSED: |
| 523 |
error = "Connection refused"; |
| 524 |
break; |
| 525 |
case WSAECONNRESET: |
| 526 |
error = "Connection reset by peer"; |
| 527 |
break; |
| 528 |
case WSAEDESTADDRREQ: |
| 529 |
error = "Destination address required"; |
| 530 |
break; |
| 531 |
case WSAEFAULT: |
| 532 |
error = "Bad address"; |
| 533 |
break; |
| 534 |
case WSAEHOSTDOWN: |
| 535 |
error = "Host is down"; |
| 536 |
break; |
| 537 |
case WSAEHOSTUNREACH: |
| 538 |
error = "No route to host"; |
| 539 |
break; |
| 540 |
case WSAEINPROGRESS: |
| 541 |
error = "Operation now in progress"; |
| 542 |
break; |
| 543 |
case WSAEINTR: |
| 544 |
error = "Interrupted function call"; |
| 545 |
break; |
| 546 |
case WSAEINVAL: |
| 547 |
error = "Invalid argument"; |
| 548 |
break; |
| 549 |
case WSAEISCONN: |
| 550 |
error = "Socket is already connected"; |
| 551 |
break; |
| 552 |
case WSAEMFILE: |
| 553 |
error = "Too many open files"; |
| 554 |
break; |
| 555 |
case WSAEMSGSIZE: |
| 556 |
error = "Message too long"; |
| 557 |
break; |
| 558 |
case WSAENETDOWN: |
| 559 |
error = "Network is down"; |
| 560 |
break; |
| 561 |
case WSAENETRESET: |
| 562 |
error = "Network dropped connection on reset"; |
| 563 |
break; |
| 564 |
case WSAENETUNREACH: |
| 565 |
error = "Network is unreachable"; |
| 566 |
break; |
| 567 |
case WSAENOBUFS: |
| 568 |
error = "No buffer space available"; |
| 569 |
break; |
| 570 |
case WSAENOPROTOOPT: |
| 571 |
error = "Bad protocol option"; |
| 572 |
break; |
| 573 |
case WSAENOTCONN: |
| 574 |
error = "Socket is not connected"; |
| 575 |
break; |
| 576 |
case WSAENOTSOCK: |
| 577 |
error = "Socket operation on non-socket"; |
| 578 |
break; |
| 579 |
case WSAEOPNOTSUPP: |
| 580 |
error = "Operation not supported"; |
| 581 |
break; |
| 582 |
case WSAEPFNOSUPPORT: |
| 583 |
error = "Protocol family not supported"; |
| 584 |
break; |
| 585 |
case WSAEPROCLIM: |
| 586 |
error = "Too many processes"; |
| 587 |
break; |
| 588 |
case WSAEPROTONOSUPPORT: |
| 589 |
error = "Protocol not supported"; |
| 590 |
break; |
| 591 |
case WSAEPROTOTYPE: |
| 592 |
error = "Protocol wrong type for socket"; |
| 593 |
break; |
| 594 |
case WSAESHUTDOWN: |
| 595 |
error = "Cannot send after socket shutdown"; |
| 596 |
break; |
| 597 |
case WSAESOCKTNOSUPPORT: |
| 598 |
error = "Socket type not supported"; |
| 599 |
break; |
| 600 |
case WSAETIMEDOUT: |
| 601 |
error = "Connection timed out"; |
| 602 |
break; |
| 603 |
case WSATYPE_NOT_FOUND: |
| 604 |
error = "Class type not found"; |
| 605 |
break; |
| 606 |
case WSAEWOULDBLOCK: |
| 607 |
error = "Resource temporarily unavailable"; |
| 608 |
break; |
| 609 |
case WSAHOST_NOT_FOUND: |
| 610 |
error = "Host not found"; |
| 611 |
break; |
| 612 |
case WSA_INVALID_HANDLE: |
| 613 |
error = "Specified event object handle is invalid"; |
| 614 |
break; |
| 615 |
case WSA_INVALID_PARAMETER: |
| 616 |
error = "One or more parameters are invalid"; |
| 617 |
break; |
| 618 |
// case WSAINVALIDPROCTABLE: |
| 619 |
// error = "Invalid procedure table from service provider"; |
| 620 |
// break; |
| 621 |
// case WSAINVALIDPROVIDER: |
| 622 |
// error = "Invalid service provider version number"; |
| 623 |
// break; |
| 624 |
case WSA_IO_INCOMPLETE: |
| 625 |
error = "Overlapped I/O event object not in signaled state"; |
| 626 |
break; |
| 627 |
case WSA_IO_PENDING: |
| 628 |
error = "Overlapped operations will complete later"; |
| 629 |
break; |
| 630 |
case WSA_NOT_ENOUGH_MEMORY: |
| 631 |
error = "Insufficient memory available"; |
| 632 |
break; |
| 633 |
case WSANOTINITIALISED: |
| 634 |
error = "Successful WSAStartup not yet performed"; |
| 635 |
break; |
| 636 |
case WSANO_DATA: |
| 637 |
error = "Valid name, no data record of requested type"; |
| 638 |
break; |
| 639 |
case WSANO_RECOVERY: |
| 640 |
error = "This is a non-recoverable error"; |
| 641 |
break; |
| 642 |
// case WSAPROVIDERFAILEDINIT: |
| 643 |
// error = "Unable to initialize a service provider"; |
| 644 |
// break; |
| 645 |
case WSASYSCALLFAILURE: |
| 646 |
error = "System call failure"; |
| 647 |
break; |
| 648 |
case WSASYSNOTREADY: |
| 649 |
error = "Network subsystem is unavailable"; |
| 650 |
break; |
| 651 |
case WSATRY_AGAIN: |
| 652 |
error = "Non-authoritative host not found"; |
| 653 |
break; |
| 654 |
case WSAVERNOTSUPPORTED: |
| 655 |
error = "WINSOCK.DLL version out of range"; |
| 656 |
break; |
| 657 |
case WSAEDISCON: |
| 658 |
error = "Graceful shutdown in progress"; |
| 659 |
break; |
| 660 |
case WSA_OPERATION_ABORTED: |
| 661 |
error = "Overlapped operation aborted"; |
| 662 |
break; |
| 663 |
default: |
| 664 |
error = "Unknown error"; |
| 665 |
break; |
| 666 |
} |
| 667 |
|
| 668 |
cerr << prefix << ": " << error << "\n"; |
| 669 |
#else |
| 670 |
if (host) |
| 671 |
{ |
| 672 |
string error; |
| 673 |
|
| 674 |
switch (h_errno) |
| 675 |
{ |
| 676 |
case HOST_NOT_FOUND: |
| 677 |
error = "Unknown host"; |
| 678 |
break; |
| 679 |
case TRY_AGAIN: |
| 680 |
error = "Host name lookup failure"; |
| 681 |
break; |
| 682 |
case NO_RECOVERY: |
| 683 |
error = "Unknown server error"; |
| 684 |
break; |
| 685 |
case NO_DATA: |
| 686 |
error = "No address associated with name"; |
| 687 |
break; |
| 688 |
default: |
| 689 |
error = "Unknown error"; |
| 690 |
break; |
| 691 |
} |
| 692 |
|
| 693 |
cerr << prefix << ": " << error << "\n"; |
| 694 |
} |
| 695 |
else |
| 696 |
{ |
| 697 |
perror(prefix.c_str()); |
| 698 |
} |
| 699 |
#endif // _WIN32 |
| 700 |
} |
| 701 |
|
| 702 |
#ifdef _OpenSSL_ |
| 703 |
void HttpHandler::error(const string& prefix, int number) |
| 704 |
{ |
| 705 |
string error; |
| 706 |
|
| 707 |
switch (SSL_get_error(ssl, number)) |
| 708 |
{ |
| 709 |
case SSL_ERROR_NONE: |
| 710 |
error = "The TLS/SSL I/O operation completed"; |
| 711 |
break; |
| 712 |
case SSL_ERROR_ZERO_RETURN: |
| 713 |
error = "The TLS/SSL connection has been closed"; |
| 714 |
break; |
| 715 |
case SSL_ERROR_WANT_READ: |
| 716 |
case SSL_ERROR_WANT_WRITE: |
| 717 |
case SSL_ERROR_WANT_CONNECT: |
| 718 |
// case SSL_ERROR_WANT_ACCEPT: |
| 719 |
case SSL_ERROR_WANT_X509_LOOKUP: |
| 720 |
error = "The operation did not complete"; |
| 721 |
break; |
| 722 |
case SSL_ERROR_SYSCALL: |
| 723 |
if (int err = ERR_get_error() != 0) |
| 724 |
{ |
| 725 |
error = ERR_reason_error_string(err); |
| 726 |
} |
| 727 |
else |
| 728 |
{ |
| 729 |
switch (number) |
| 730 |
{ |
| 731 |
case 0: |
| 732 |
error = "An EOF was observed that violates the protocol"; |
| 733 |
break; |
| 734 |
case -1: |
| 735 |
this->error(prefix); |
| 736 |
return; |
| 737 |
default: |
| 738 |
error = "Unknown error"; |
| 739 |
break; |
| 740 |
} |
| 741 |
} |
| 742 |
break; |
| 743 |
case SSL_ERROR_SSL: |
| 744 |
error = ERR_reason_error_string(ERR_get_error()); |
| 745 |
break; |
| 746 |
default: |
| 747 |
error = "Unknown error"; |
| 748 |
break; |
| 749 |
} |
| 750 |
|
| 751 |
cerr << prefix << ": " << error << "\n"; |
| 752 |
} |
| 753 |
|
| 754 |
bool HttpHandler::starttls() |
| 755 |
{ |
| 756 |
SSL_load_error_strings(); |
| 757 |
SSL_library_init(); |
| 758 |
|
| 759 |
#ifndef _urandomdev_ |
| 760 |
int pid = getpid(); |
| 761 |
int now = time(NULL); |
| 762 |
|
| 763 |
unsigned seed = now > pid ? now - pid : pid - now; |
| 764 |
|
| 765 |
char* junk = new char[seed % 30 + 2]; |
| 766 |
junk[0] = pid; |
| 767 |
junk[seed % 30 + 1] = now; |
| 768 |
|
| 769 |
srand(seed); |
| 770 |
|
| 771 |
for (int index = 1; index < seed % 30 + 1; index++) |
| 772 |
{ |
| 773 |
junk[index] = rand(); |
| 774 |
} |
| 775 |
|
| 776 |
if (debug) |
| 777 |
{ |
| 778 |
cerr << "junk = {\n"; |
| 779 |
|
| 780 |
for (int index = 1; index < seed % 30 + 2; index++) |
| 781 |
{ |
| 782 |
cerr << " [" << index << "] = " << int(junk[index]) << "\n"; |
| 783 |
} |
| 784 |
|
| 785 |
cerr << "}\n"; |
| 786 |
} |
| 787 |
|
| 788 |
RAND_seed(junk, seed % 30 + 2); |
| 789 |
|
| 790 |
delete junk; |
| 791 |
#endif |
| 792 |
|
| 793 |
ctx = SSL_CTX_new(TLSv1_client_method()); |
| 794 |
|
| 795 |
if (ctx == NULL) |
| 796 |
{ |
| 797 |
cerr << program << ": SSL CTX New: " |
| 798 |
<< ERR_reason_error_string(ERR_get_error()) << "\n"; |
| 799 |
return false; |
| 800 |
} |
| 801 |
|
| 802 |
ssl = SSL_new(ctx); |
| 803 |
|
| 804 |
if (SSL_set_fd(ssl, http) == 0) |
| 805 |
{ |
| 806 |
cerr << program << ": SSL Set FD: " |
| 807 |
<< ERR_reason_error_string(ERR_get_error()) << "\n"; |
| 808 |
return false; |
| 809 |
} |
| 810 |
|
| 811 |
int number; |
| 812 |
|
| 813 |
if ((number = SSL_connect(ssl)) <= 0) |
| 814 |
{ |
| 815 |
error(program + ": SSL Connect", number); |
| 816 |
return false; |
| 817 |
} |
| 818 |
|
| 819 |
return true; |
| 820 |
} |
| 821 |
#endif |
