Merge

- Added Transport classes to handle URIs like ssh://user@host:port/

src/Transport.cpp

@@ -0,0 +1,154 @@
+////////////////////////////////////////////////////////////////////////////////
+// taskwarrior - a command line task list manager.
+//
+// Copyright 2006 - 2010, Paul Beckingham, Johannes Schlatow.
+// All rights reserved.
+//
+// This program is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation; either version 2 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+// details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program; if not, write to the
+//
+//     Free Software Foundation, Inc.,
+//     51 Franklin Street, Fifth Floor,
+//     Boston, MA
+//     02110-1301
+//     USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <iostream>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include "Transport.h"
+#include "TransportSSH.h"
+
+////////////////////////////////////////////////////////////////////////////////
+Transport::Transport (const std::string& host, const std::string& path, const std::string& user="", const std::string& port="")
+{
+  executable = "";
+	this->host = host;
+	this->path = path;
+	this->user = user;
+	this->port = port;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Transport::Transport (const std::string& uri)
+{
+  executable = "";
+	
+	parseUri(uri);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Transport::~Transport ()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void Transport::parseUri(std::string uri)
+{
+  std::string::size_type pos;	
+	std::string uripart;
+	
+	user = "";
+	port = "";
+	
+	// skip ^.*://
+  if ((pos = uri.find ("://")) != std::string::npos)
+	{
+		uri = uri.substr (pos+3);
+	}
+	
+	// get host part
+	if ((pos = uri.find ("/")) != std::string::npos)
+	{
+		host = uri.substr (0, pos);
+		path = uri.substr (pos+1);
+	}
+	else
+	{
+		throw std::string ("Could not parse \""+uri+"\"");
+	}
+	
+	// parse host
+	if ((pos = host.find ("@")) != std::string::npos)
+	{
+		user = host.substr (0, pos);
+		host = host.substr (pos+1);
+	}
+	
+	if ((pos = host.find (":")) != std::string::npos)
+	{
+		port = host.substr (pos+1);
+		host = host.substr (0,pos);
+	}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+Transport* Transport::getTransport(const std::string& uri)
+{
+	if (uri.find("ssh://") == 0) {
+			return new TransportSSH(uri);
+	}
+	
+	return NULL;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+int Transport::execute()
+{
+	if (executable == "") 
+		return -1;
+		
+	pid_t child_pid = fork();
+	
+	if (child_pid == 0)
+	{
+		// this is done by the child process		
+		char shell[] = "sh";
+		char opt[]   = "-c";
+	
+		std::string cmdline = executable;
+		
+		std::vector <std::string>::iterator it;
+		for (it = arguments.begin(); it != arguments.end(); ++it)
+		{
+			std::string tmp = *it;
+			cmdline += " " + tmp;			
+		}
+		
+		char** argv = new char*[4];
+		argv[0] = shell;                  // sh
+		argv[1] = opt;                    // -c
+		argv[2] = (char*)cmdline.c_str();	// e.g. scp undo.data user@host:.task/
+		argv[3] = NULL;                   // required by execv
+
+		int ret = execvp("sh", argv);	
+		delete[] argv;
+		
+		exit(ret);
+	}
+	else
+	{
+		// this is done by the parent process
+		int child_status;
+		
+		pid_t pid = waitpid(child_pid, &child_status, 0);
+		
+		if (pid == -1)
+			return -1;
+		else
+			return child_status;
+	}
+}