public static int StartDaemon(ClientInfo clientInfo)
{
IOStream stream = clientInfo.IoStream;
Options options = clientInfo.Options;
options.amDaemon = true;
stream.IOPrintf("@RSYNCD: " + options.protocolVersion + "\n");
string line = stream.ReadLine();
try
{
options.remoteProtocol = Int32.Parse(line.Substring(9, 2));
}
catch
{
options.remoteProtocol = 0;
}
bool isValidstring = line.StartsWith("@RSYNCD: ") && line.EndsWith("\n") && options.remoteProtocol > 0;
if (!isValidstring)
{
stream.IOPrintf("@ERROR: protocol startup error\n");
return(-1);
}
if (options.protocolVersion > options.remoteProtocol)
{
options.protocolVersion = options.remoteProtocol;
}
line = stream.ReadLine();
if (line.CompareTo("#list\n") == 0)
{
ClientServer.SendListing(stream);
return(-1);
}
if (line[0] == '#')
{
stream.IOPrintf("@ERROR: Unknown command '" + line.Replace("\n", String.Empty) + "'\n");
return(-1);
}
int i = config.GetNumberModule(line.Replace("\n", String.Empty));
if (i < 0)
{
stream.IOPrintf("@ERROR: Unknown module " + line);
MainClass.Exit("@ERROR: Unknown module " + line, clientInfo);
}
options.doStats = true;
options.ModuleId = i;
ClientServer.RsyncModule(clientInfo, i);
clientInfo.IoStream.Close();
return(1);
}
public static int RsyncModule(ClientInfo cInfo, int moduleNumber)
{
string path = Daemon.config.GetModule(moduleNumber).Path;
string name = Daemon.config.GetModuleName(moduleNumber);
IOStream f = cInfo.IoStream;
Options options = cInfo.Options;
string[] args = new string[Options.MAX_ARGS];
int argc = 0, maxargs = Options.MAX_ARGS;
string line = "";
if (path[0] == '/')
{
path = path.Remove(0, 1);
}
path = path.Replace("\n", "");
Access ac = new Access();
if (!ac.AllowAccess(options.remoteAddr, options.remoteHost, Daemon.config.GetHostsAllow(moduleNumber), Daemon.config.GetHostsDeny(moduleNumber)))
{
Log.Write("rsync denied on module " + name + " from " + options.remoteHost + " (" + options.remoteAddr + ")");
f.IOPrintf("@ERROR: access denied to " + name + " from " + options.remoteHost + " (" + options.remoteAddr + ")\n");
return(-1);
}
if (!Authentication.AuthServer(cInfo, moduleNumber, options.remoteAddr, "@RSYNCD: AUTHREQD "))
{
Log.Write("auth failed on module " + name + " from " + options.remoteHost + " (" + options.remoteAddr + ")\n");
f.IOPrintf("@ERROR: auth failed on module " + name + "\n");
return(-1);
}
// TODO: path length
if (FileSystem.Directory.Exists(path))
{
f.IOPrintf("@RSYNCD: OK\n");
}
else
{
try
{
// TODO: path length
FileSystem.Directory.CreateDirectory(path);
f.IOPrintf("@RSYNCD: OK\n");
}
catch (Exception) {
f.IOPrintf("@ERROR: Path not found\n");
MainClass.Exit("@ERROR: Path not found: " + path, cInfo);
}
}
options.amServer = true; //to fix error in SetupProtocol
options.dir = path;
while (true)
{
line = f.ReadLine();
line = line.Substring(0, line.Length - 1);
if (line.CompareTo("") == 0)
{
break;
}
if (argc == maxargs)
{
maxargs += Options.MAX_ARGS;
MapFile.ReallocArrayString(ref args, maxargs);
}
args[argc++] = line;
}
args[argc++] = path;
options.verbose = 0;
int argsNotUsed = CommandLineParser.ParseArguments(args, options);
if (argsNotUsed == -1)
{
MainClass.Exit("Error parsing options", cInfo);
}
string[] args2 = new string[argsNotUsed];
for (int i = 0; i < argsNotUsed; i++)
{
args2[i] = args[args.Length - argsNotUsed + i];
}
MainClass.SetupProtocol(cInfo);
f.IOStartMultiplexOut();
Daemon.StartServer(cInfo, args2);
return(-1);
}
public static bool AuthServer(ClientInfo cInfo, int moduleNumber, string addr, string leader)
{
string users = Daemon.config.GetAuthUsers(moduleNumber).Trim();
string challenge;
string b64_challenge;
IOStream f = cInfo.IoStream;
string line;
string user = "";
string secret = "";
string pass = "";
string pass2 = "";
string[] listUsers;
string tok = "";
/* if no auth list then allow anyone in! */
if (users == null || users.CompareTo("") == 0)
{
return(true);
}
challenge = gen_challenge(addr, cInfo.Options);
b64_challenge = base64_encode(challenge);
f.IOPrintf(leader + b64_challenge + "\n");
line = f.ReadLine();
if (line.IndexOf(' ') > 0)
{
user = line.Substring(0, line.IndexOf(' '));
pass = line.Substring(line.IndexOf(' ')).Trim('\n').Trim();
}
else
{
return(false);
}
listUsers = users.Split(',');
for (int i = 0; i < listUsers.Length; i++)
{
tok = listUsers[i];
if (user.CompareTo(tok) == 0)
{
break;
}
tok = null;
}
if (tok == null || tok.CompareTo("") == 0)
{
return(false);
}
if ((secret = GetSecret(moduleNumber, user)) == null)
{
return(false);
}
pass2 = generate_hash(secret, b64_challenge, cInfo.Options);
if (pass.CompareTo(pass2) == 0)
{
return(true);
}
return(false);
}
public static int StartInbandExchange(string user, string path, ClientInfo cInfo, int argc)
{
Options options = cInfo.Options;
IOStream f = cInfo.IoStream;
string[] sargs = new string[Options.MAX_ARGS];
int sargc = options.ServerOptions(sargs);
sargs[sargc++] = ".";
//if(path != null && path.Length>0)
//sargs[sargc++] = path;
if (argc == 0 && !options.amSender)
{
options.listOnly = true;
}
if (path[0] == '/')
{
Log.WriteLine("ERROR: The remote path must start with a module name");
return(-1);
}
f.IOPrintf("@RSYNCD: " + options.protocolVersion + "\n");
string line = f.ReadLine();
try
{
options.remoteProtocol = Int32.Parse(line.Substring(9, 2));
}
catch
{
options.remoteProtocol = 0;
}
bool isValidstring = line.StartsWith("@RSYNCD: ") && line.EndsWith("\n") && options.remoteProtocol > 0;
if (!isValidstring)
{
f.IOPrintf("@ERROR: protocol startup error\n");
return(-1);
}
if (options.protocolVersion > options.remoteProtocol)
{
options.protocolVersion = options.remoteProtocol;
}
f.IOPrintf(path + "\n");
while (true)
{
line = f.ReadLine();
if (line.CompareTo("@RSYNCD: OK\n") == 0)
{
break;
}
if (line.Length > 18 && line.Substring(0, 18).CompareTo("@RSYNCD: AUTHREQD ") == 0)
{
string pass = String.Empty;
if (user.IndexOf(':') != -1)
{
pass = user.Substring(user.IndexOf(':') + 1);
user = user.Substring(0, user.IndexOf(':'));
}
f.IOPrintf(user + " " + Authentication.AuthorizeClient(user, pass, line.Substring(18).Replace("\n", String.Empty), options) + "\n");
continue;
}
if (line.CompareTo("@RSYNCD: EXIT\n") == 0)
{
MainClass.Exit("@RSYNCD: EXIT", null);
}
if (line.StartsWith("@ERROR: "))
{
MainClass.Exit("Server: " + line.Replace("\n", String.Empty), null);
}
}
for (int i = 0; i < sargc; i++)
{
f.IOPrintf(sargs[i] + "\n");
}
f.IOPrintf("\n");
return(0);
}
/// <summary>
/// Server-side authorization check
/// </summary>
/// <param name="clientInfo"></param>
/// <param name="moduleNumber"></param>
/// <param name="addr"></param>
/// <param name="leader"></param>
/// <returns></returns>
public static bool AuthorizeServer(ClientInfo clientInfo, int moduleNumber, string addr, string leader)
{
string users = Daemon.config.GetAuthUsers(moduleNumber).Trim();
//string challenge;
string b64Challenge;
IOStream ioStream = clientInfo.IoStream;
string line;
string user = String.Empty;
string secret = String.Empty;
string pass = String.Empty;
string pass2 = String.Empty;
string[] listUsers;
string token = String.Empty;
/* if no auth list then allow anyone in! */
if (string.IsNullOrEmpty(users))
{
return(true);
}
b64Challenge = Base64Encode(GenerateChallenge(addr, clientInfo.Options));
ioStream.IOPrintf(leader + b64Challenge + "\n");
line = ioStream.ReadLine();
if (line.IndexOf(' ') > 0)
{
user = line.Substring(0, line.IndexOf(' '));
pass = line.Substring(line.IndexOf(' ')).Trim('\n').Trim();
}
else
{
return(false);
}
listUsers = users.Split(',');
for (int i = 0; i < listUsers.Length; i++)
{
token = listUsers[i];
if (user.Equals(token))
{
break;
}
token = null;
}
if (string.IsNullOrEmpty(token))
{
return(false);
}
if ((secret = GetSecret(moduleNumber, user)) == null)
{
return(false);
}
pass2 = GenerateHash(secret, b64Challenge, clientInfo.Options);
if (pass.Equals(pass2))
{
return(true);
}
return(false);
}