X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/bf3daa15e9e744d9481d9e6d1e250b77d1f7b256..14c84d021d82335255275f1eabf3a856bde4df07:/test/interactive-helper/aptwebserver.cc?ds=sidebyside diff --git a/test/interactive-helper/aptwebserver.cc b/test/interactive-helper/aptwebserver.cc index d25f50624..4dae342dd 100644 --- a/test/interactive-helper/aptwebserver.cc +++ b/test/interactive-helper/aptwebserver.cc @@ -100,8 +100,13 @@ bool sendHead(int const client, int const httpcode, std::list &head std::string response("HTTP/1.1 "); response.append(httpcodeToStr(httpcode)); headers.push_front(response); + _config->Set("APTWebserver::Last-Status-Code", httpcode); - headers.push_back("Server: APT webserver"); + std::stringstream buffer; + _config->Dump(buffer, "aptwebserver::response-header", "%t: %v%n", false); + std::vector addheaders = VectorizeString(buffer.str(), '\n'); + for (std::vector::const_iterator h = addheaders.begin(); h != addheaders.end(); ++h) + headers.push_back(*h); std::string date("Date: "); date.append(TimeRFC1123(time(NULL))); @@ -156,14 +161,28 @@ void sendError(int const client, int const httpcode, std::string const &request, std::string response(""); response.append(httpcodeToStr(httpcode)).append(""); response.append("

").append(httpcodeToStr(httpcode)).append("

"); - if (error.empty() == false) - response.append("

Error: ").append(error).append("

"); - response.append("This error is a result of the request: 
");
+   if (httpcode != 200)
+   {
+      if (error.empty() == false)
+	 response.append("
Error: ").append(error).append("
");
+      response.append("This error is a result of the request: 
");
+   }
+   else
+   {
+      if (error.empty() == false)
+	 response.append("
Success: ").append(error).append("
");
+      response.append("The successfully executed operation was requested by: 
");
+   }
    response.append(request).append("
");
    addDataHeaders(headers, response);
    sendHead(client, httpcode, headers);
    if (content == true)
       sendData(client, response);
+}
+void sendSuccess(int const client, std::string const &request,
+	       bool content, std::string const &error = "")
+{
+   sendError(client, 200, request, content, error);
 }
 									/*}}}*/
 void sendRedirect(int const client, int const httpcode, std::string const &uri,/*{{{*/
@@ -319,6 +338,33 @@ bool parseFirstLine(int const client, std::string const &request,	/*{{{*/
       sendError(client, 500, request, sendContent, "Filename contains an unencoded space");
       return false;
    }
+
+   std::string host = LookupTag(request, "Host", "");
+   if (host.empty() == true)
+   {
+      // RFC 2616 §14.23 requires Host
+      sendError(client, 400, request, sendContent, "Host header is required");
+      return false;
+   }
+   host = "http://" + host;
+
+   // Proxies require absolute uris, so this is a simple proxy-fake option
+   std::string const absolute = _config->Find("aptwebserver::request::absolute", "uri,path");
+   if (strncmp(host.c_str(), filename.c_str(), host.length()) == 0)
+   {
+      if (absolute.find("uri") == std::string::npos)
+      {
+	 sendError(client, 400, request, sendContent, "Request is absoluteURI, but configured to not accept that");
+	 return false;
+      }
+      // strip the host from the request to make it an absolute path
+      filename.erase(0, host.length());
+   }
+   else if (absolute.find("path") == std::string::npos)
+   {
+      sendError(client, 400, request, sendContent, "Request is absolutePath, but configured to not accept that");
+      return false;
+   }
    filename = DeQuoteString(filename);
 
    // this is not a secure server, but at least prevent the obvious …
@@ -338,10 +384,54 @@ bool parseFirstLine(int const client, std::string const &request,	/*{{{*/
    return true;
 }
 									/*}}}*/
+bool handleOnTheFlyReconfiguration(int const client, std::string const &request, std::vector const &parts)/*{{{*/
+{
+   size_t const pcount = parts.size();
+   if (pcount == 4 && parts[1] == "set")
+   {
+      _config->Set(parts[2], parts[3]);
+      sendSuccess(client, request, true, "Option '" + parts[2] + "' was set to '" + parts[3] + "'!");
+      return true;
+   }
+   else if (pcount == 4 && parts[1] == "find")
+   {
+      std::list headers;
+      std::string response = _config->Find(parts[2], parts[3]);
+      addDataHeaders(headers, response);
+      sendHead(client, 200, headers);
+      sendData(client, response);
+      return true;
+   }
+   else if (pcount == 3 && parts[1] == "find")
+   {
+      std::list headers;
+      if (_config->Exists(parts[2]) == true)
+      {
+	 std::string response = _config->Find(parts[2]);
+	 addDataHeaders(headers, response);
+	 sendHead(client, 200, headers);
+	 sendData(client, response);
+	 return true;
+      }
+      sendError(client, 404, request, "Requested Configuration option doesn't exist.");
+      return false;
+   }
+   else if (pcount == 3 && parts[1] == "clear")
+   {
+      _config->Clear(parts[2]);
+      sendSuccess(client, request, true, "Option '" + parts[2] + "' was cleared.");
+      return true;
+   }
+
+   sendError(client, 400, request, true, "Unknown on-the-fly configuration request");
+   return false;
+}
+									/*}}}*/
 int main(int const argc, const char * argv[])
 {
    CommandLine::Args Args[] = {
       {0, "port", "aptwebserver::port", CommandLine::HasArg},
+      {0, "request-absolute", "aptwebserver::request::absolute", CommandLine::HasArg},
       {'c',"config-file",0,CommandLine::ConfigFile},
       {'o',"option",0,CommandLine::ArbItem},
       {0,0,0,0}
@@ -387,11 +477,49 @@ int main(int const argc, const char * argv[])
       return 2;
    }
 
+   FileFd pidfile;
+   if (_config->FindB("aptwebserver::fork", false) == true)
+   {
+      std::string const pidfilename = _config->Find("aptwebserver::pidfile", "aptwebserver.pid");
+      int const pidfilefd = GetLock(pidfilename);
+      if (pidfilefd < 0 || pidfile.OpenDescriptor(pidfilefd, FileFd::WriteOnly) == false)
+      {
+	 _error->Errno("aptwebserver", "Couldn't acquire lock on pidfile '%s'", pidfilename.c_str());
+	 _error->DumpErrors(std::cerr);
+	 return 3;
+      }
+
+      pid_t child = fork();
+      if (child < 0)
+      {
+	 _error->Errno("aptwebserver", "Forking failed");
+	 _error->DumpErrors(std::cerr);
+	 return 4;
+      }
+      else if (child != 0)
+      {
+	 // successfully forked: ready to serve!
+	 std::string pidcontent;
+	 strprintf(pidcontent, "%d", child);
+	 pidfile.Write(pidcontent.c_str(), pidcontent.size());
+	 if (_error->PendingError() == true)
+	 {
+	    _error->DumpErrors(std::cerr);
+	    return 5;
+	 }
+	 std::cout << "Successfully forked as " << child << std::endl;
+	 return 0;
+      }
+   }
+
    std::clog << "Serving ANY file on port: " << port << std::endl;
 
    listen(sock, 1);
    /*}}}*/
 
+   _config->CndSet("aptwebserver::response-header::Server", "APT webserver");
+   _config->CndSet("aptwebserver::response-header::Accept-Ranges", "bytes");
+
    std::vector messages;
    int client;
    while ((client = accept(sock, NULL, NULL)) != -1)
@@ -412,14 +540,59 @@ int main(int const argc, const char * argv[])
 	    if (parseFirstLine(client, *m, filename, sendContent, closeConnection) == false)
 	       continue;
 
-	    std::string host = LookupTag(*m, "Host", "");
-	    if (host.empty() == true)
+	    // special webserver command request
+	    if (filename.length() > 1 && filename[0] == '_')
 	    {
-	       // RFC 2616 §14.23 requires Host
-	       sendError(client, 400, *m, sendContent, "Host header is required");
-	       continue;
+	       std::vector parts = VectorizeString(filename, '/');
+	       if (parts[0] == "_config")
+	       {
+		  handleOnTheFlyReconfiguration(client, *m, parts);
+		  continue;
+	       }
+	    }
+
+	    // string replacements in the requested filename
+	    ::Configuration::Item const *Replaces = _config->Tree("aptwebserver::redirect::replace");
+	    if (Replaces != NULL)
+	    {
+	       std::string redirect = "/" + filename;
+	       for (::Configuration::Item *I = Replaces->Child; I != NULL; I = I->Next)
+		  redirect = SubstVar(redirect, I->Tag, I->Value);
+	       redirect.erase(0,1);
+	       if (redirect != filename)
+	       {
+		  sendRedirect(client, 301, redirect, *m, sendContent);
+		  continue;
+	       }
 	    }
 
+	    ::Configuration::Item const *Overwrite = _config->Tree("aptwebserver::overwrite");
+	    if (Overwrite != NULL)
+	    {
+	       for (::Configuration::Item *I = Overwrite->Child; I != NULL; I = I->Next)
+	       {
+		  regex_t *pattern = new regex_t;
+		  int const res = regcomp(pattern, I->Tag.c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB);
+		  if (res != 0)
+		  {
+		     char error[300];
+		     regerror(res, pattern, error, sizeof(error));
+		     sendError(client, 500, *m, sendContent, error);
+		     continue;
+		  }
+		  if (regexec(pattern, filename.c_str(), 0, 0, 0) == 0)
+		  {
+		      filename = _config->Find("aptwebserver::overwrite::" + I->Tag + "::filename", filename);
+		      if (filename[0] == '/')
+			 filename.erase(0,1);
+		      regfree(pattern);
+		      break;
+		  }
+		  regfree(pattern);
+	       }
+	    }
+
+	    // deal with the request
 	    if (RealFileExists(filename) == true)
 	    {
 	       FileFd data(filename, FileFd::ReadOnly);
@@ -435,6 +608,60 @@ int main(int const argc, const char * argv[])
 		  }
 	       }
 
+	       if (_config->FindB("aptwebserver::support::range", true) == true)
+		  condition = LookupTag(*m, "Range", "");
+	       else
+		  condition.clear();
+	       if (condition.empty() == false && strncmp(condition.c_str(), "bytes=", 6) == 0)
+	       {
+		  time_t cache;
+		  std::string ifrange;
+		  if (_config->FindB("aptwebserver::support::if-range", true) == true)
+		     ifrange = LookupTag(*m, "If-Range", "");
+		  bool validrange = (ifrange.empty() == true ||
+			(RFC1123StrToTime(ifrange.c_str(), cache) == true &&
+			 cache <= data.ModificationTime()));
+
+		  // FIXME: support multiple byte-ranges (APT clients do not do this)
+		  if (condition.find(',') == std::string::npos)
+		  {
+		     size_t start = 6;
+		     unsigned long long filestart = strtoull(condition.c_str() + start, NULL, 10);
+		     // FIXME: no support for last-byte-pos being not the end of the file (APT clients do not do this)
+		     size_t dash = condition.find('-') + 1;
+		     unsigned long long fileend = strtoull(condition.c_str() + dash, NULL, 10);
+		     unsigned long long filesize = data.FileSize();
+		     if ((fileend == 0 || (fileend == filesize && fileend >= filestart)) &&
+			   validrange == true)
+		     {
+			if (filesize > filestart)
+			{
+			   data.Skip(filestart);
+			   std::ostringstream contentlength;
+			   contentlength << "Content-Length: " << (filesize - filestart);
+			   headers.push_back(contentlength.str());
+			   std::ostringstream contentrange;
+			   contentrange << "Content-Range: bytes " << filestart << "-"
+			      << filesize - 1 << "/" << filesize;
+			   headers.push_back(contentrange.str());
+			   sendHead(client, 206, headers);
+			   if (sendContent == true)
+			      sendFile(client, data);
+			   continue;
+			}
+			else
+			{
+			   headers.push_back("Content-Length: 0");
+			   std::ostringstream contentrange;
+			   contentrange << "Content-Range: bytes */" << filesize;
+			   headers.push_back(contentrange.str());
+			   sendHead(client, 416, headers);
+			   continue;
+			}
+		     }
+		  }
+	       }
+
 	       addFileHeaders(headers, data);
 	       sendHead(client, 200, headers);
 	       if (sendContent == true)
@@ -460,5 +687,7 @@ int main(int const argc, const char * argv[])
 		<< " on socket " << sock << std::endl;
       close(client);
    }
+   pidfile.Close();
+
    return 0;
 }