--- loncom/lond 2004/07/29 22:31:18 1.219
+++ loncom/lond 2004/08/18 11:31:50 1.232
@@ -2,7 +2,7 @@
# The LearningOnline Network
# lond "LON Daemon" Server (port "LOND" 5663)
#
-# $Id: lond,v 1.219 2004/07/29 22:31:18 foxr Exp $
+# $Id: lond,v 1.232 2004/08/18 11:31:50 foxr Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -50,13 +50,14 @@ use File::Copy;
use LONCAPA::ConfigFileEdit;
use LONCAPA::lonlocal;
use LONCAPA::lonssl;
+use Fcntl qw(:flock);
-my $DEBUG = 0; # Non zero to enable debug log entries.
+my $DEBUG = 1; # Non zero to enable debug log entries.
my $status='';
my $lastlog='';
-my $VERSION='$Revision: 1.219 $'; #' stupid emacs
+my $VERSION='$Revision: 1.232 $'; #' stupid emacs
my $remoteVERSION;
my $currenthostid="default";
my $currentdomainid;
@@ -121,8 +122,10 @@ my @passwderrors = ("ok",
"lcpasswd Cannot set new passwd.",
"lcpasswd Username has invalid characters",
"lcpasswd Invalid characters in password",
- "11", "12",
- "lcpasswd Password mismatch");
+ "lcpasswd User already exists",
+ "lcpasswd Something went wrong with user addition.",
+ "lcpasswd Password mismatch",
+ "lcpasswd Error filename is invalid");
# The array below are lcuseradd error strings.:
@@ -159,8 +162,6 @@ sub ResetStatistics {
$Failures = 0;
}
-
-
#------------------------------------------------------------------------
#
# LocalConnection
@@ -191,8 +192,7 @@ sub LocalConnection {
."$clientdns ne $thisserver ");
close $Socket;
return undef;
- }
- else {
+ } else {
chomp($initcmd); # Get rid of \n in filename.
my ($init, $type, $name) = split(/:/, $initcmd);
Debug(" Init command: $init $type $name ");
@@ -323,8 +323,7 @@ sub InsecureConnection {
$answer =~s/\W//g;
if($challenge eq $answer) {
return 1;
- }
- else {
+ } else {
logthis("WARNING client did not respond to challenge");
&status("No challenge reqply");
return 0;
@@ -371,7 +370,6 @@ sub isClient {
# - This allows dynamic changes to the manager table
# without the need to signal to the lond.
#
-
sub ReadManagerTable {
# Clean out the old table first..
@@ -653,8 +651,7 @@ sub PushFile {
&logthis(' Pushfile: unable to install '
.$tablefile." $! ");
return "error:$!";
- }
- else {
+ } else {
&logthis(' Installed new '.$tablefile
."");
@@ -1223,15 +1220,15 @@ sub user_authorization_type {
my $userinput = "$cmd:$tail";
# Pull the domain and username out of the command tail.
- # and call GetAuthType to determine the authentication type.
+ # and call get_auth_type to determine the authentication type.
my ($udom,$uname)=split(/:/,$tail);
- my $result = &GetAuthType($udom, $uname);
+ my $result = &get_auth_type($udom, $uname);
if($result eq "nouser") {
&Failure( $replyfd, "unknown_user\n", $userinput);
} else {
#
- # We only want to pass the second field from GetAuthType
+ # We only want to pass the second field from get_auth_type
# for ^krb.. otherwise we'll be handing out the encrypted
# password for internals e.g.
#
@@ -1239,7 +1236,7 @@ sub user_authorization_type {
if($type =~ /^krb/) {
$type = $result;
}
- &Reply( $replyfd, "$type\n", $userinput);
+ &Reply( $replyfd, "$type:\n", $userinput);
}
return 1;
@@ -1361,8 +1358,1346 @@ sub edit_table_handler {
register_handler("edit", \&edit_table_handler, 1, 0, 1);
+#
+# Authenticate a user against the LonCAPA authentication
+# database. Note that there are several authentication
+# possibilities:
+# - unix - The user can be authenticated against the unix
+# password file.
+# - internal - The user can be authenticated against a purely
+# internal per user password file.
+# - kerberos - The user can be authenticated against either a kerb4 or kerb5
+# ticket granting authority.
+# - user - The person tailoring LonCAPA can supply a user authentication
+# mechanism that is per system.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+#
+sub authenticate_handler {
+ my ($cmd, $tail, $client) = @_;
+
+
+ # Regenerate the full input line
+
+ my $userinput = $cmd.":".$tail;
+
+ # udom - User's domain.
+ # uname - Username.
+ # upass - User's password.
+
+ my ($udom,$uname,$upass)=split(/:/,$tail);
+ &Debug(" Authenticate domain = $udom, user = $uname, password = $upass");
+ chomp($upass);
+ $upass=&unescape($upass);
+
+ my $pwdcorrect = &validate_user($udom, $uname, $upass);
+ if($pwdcorrect) {
+ &Reply( $client, "authorized\n", $userinput);
+ #
+ # Bad credentials: Failed to authorize
+ #
+ } else {
+ &Failure( $client, "non_authorized\n", $userinput);
+ }
+
+ return 1;
+}
+
+register_handler("auth", \&authenticate_handler, 1, 1, 0);
+
+#
+# Change a user's password. Note that this function is complicated by
+# the fact that a user may be authenticated in more than one way:
+# At present, we are not able to change the password for all types of
+# authentication methods. Only for:
+# unix - unix password or shadow passoword style authentication.
+# local - Locally written authentication mechanism.
+# For now, kerb4 and kerb5 password changes are not supported and result
+# in an error.
+# FUTURE WORK:
+# Support kerberos passwd changes?
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+sub change_password_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = $cmd.":".$tail; # Reconstruct client's string.
+
+ #
+ # udom - user's domain.
+ # uname - Username.
+ # upass - Current password.
+ # npass - New password.
+
+ my ($udom,$uname,$upass,$npass)=split(/:/,$tail);
+
+ $upass=&unescape($upass);
+ $npass=&unescape($npass);
+ &Debug("Trying to change password for $uname");
+
+ # First require that the user can be authenticated with their
+ # old password:
+
+ my $validated = &validate_user($udom, $uname, $upass);
+ if($validated) {
+ my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd.
+
+ my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
+ if ($howpwd eq 'internal') {
+ &Debug("internal auth");
+ my $salt=time;
+ $salt=substr($salt,6,2);
+ my $ncpass=crypt($npass,$salt);
+ if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
+ &logthis("Result of password change for "
+ ."$uname: pwchange_success");
+ &Reply($client, "ok\n", $userinput);
+ } else {
+ &logthis("Unable to open $uname passwd "
+ ."to change password");
+ &Failure( $client, "non_authorized\n",$userinput);
+ }
+ } elsif ($howpwd eq 'unix') {
+ # Unix means we have to access /etc/password
+ &Debug("auth is unix");
+ my $execdir=$perlvar{'lonDaemons'};
+ &Debug("Opening lcpasswd pipeline");
+ my $pf = IO::File->new("|$execdir/lcpasswd > "
+ ."$perlvar{'lonDaemons'}"
+ ."/logs/lcpasswd.log");
+ print $pf "$uname\n$npass\n$npass\n";
+ close $pf;
+ my $err = $?;
+ my $result = ($err>0 ? 'pwchange_failure' : 'ok');
+ &logthis("Result of password change for $uname: ".
+ &lcpasswdstrerror($?));
+ &Reply($client, "$result\n", $userinput);
+ } else {
+ # this just means that the current password mode is not
+ # one we know how to change (e.g the kerberos auth modes or
+ # locally written auth handler).
+ #
+ &Failure( $client, "auth_mode_error\n", $userinput);
+ }
+
+ } else {
+ &Failure( $client, "non_authorized\n", $userinput);
+ }
+
+ return 1;
+}
+register_handler("passwd", \&change_password_handler, 1, 1, 0);
+
+
+#
+# Create a new user. User in this case means a lon-capa user.
+# The user must either already exist in some authentication realm
+# like kerberos or the /etc/passwd. If not, a user completely local to
+# this loncapa system is created.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+sub add_user_handler {
+
+ my ($cmd, $tail, $client) = @_;
+
+
+ my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
+ my $userinput = $cmd.":".$tail; # Reconstruct the full request line.
+
+ &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname);
+
+
+ if($udom eq $currentdomainid) { # Reject new users for other domains...
+
+ my $oldumask=umask(0077);
+ chomp($npass);
+ $npass=&unescape($npass);
+ my $passfilename = &password_path($udom, $uname);
+ &Debug("Password file created will be:".$passfilename);
+ if (-e $passfilename) {
+ &Failure( $client, "already_exists\n", $userinput);
+ } else {
+ my @fpparts=split(/\//,$passfilename);
+ my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
+ my $fperror='';
+ for (my $i=3;$i<= ($#fpparts-1);$i++) {
+ $fpnow.='/'.$fpparts[$i];
+ unless (-e $fpnow) {
+ &logthis("mkdir $fpnow");
+ unless (mkdir($fpnow,0777)) {
+ $fperror="error: ".($!+0)." mkdir failed while attempting "
+ ."makeuser";
+ }
+ }
+ }
+ unless ($fperror) {
+ my $result=&make_passwd_file($uname, $umode,$npass, $passfilename);
+ &Reply($client, $result, $userinput); #BUGBUG - could be fail
+ } else {
+ &Failure($client, "$fperror\n", $userinput);
+ }
+ }
+ umask($oldumask);
+ } else {
+ &Failure($client, "not_right_domain\n",
+ $userinput); # Even if we are multihomed.
+
+ }
+ return 1;
+
+}
+®ister_handler("makeuser", \&add_user_handler, 1, 1, 0);
+
+#
+# Change the authentication method of a user. Note that this may
+# also implicitly change the user's password if, for example, the user is
+# joining an existing authentication realm. Known authentication realms at
+# this time are:
+# internal - Purely internal password file (only loncapa knows this user)
+# local - Institutionally written authentication module.
+# unix - Unix user (/etc/passwd with or without /etc/shadow).
+# kerb4 - kerberos version 4
+# kerb5 - kerberos version 5
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+#
+sub change_authentication_handler {
+
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail"; # Reconstruct user input.
+
+ my ($udom,$uname,$umode,$npass)=split(/:/,$tail);
+ &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode);
+ if ($udom ne $currentdomainid) {
+ &Failure( $client, "not_right_domain\n", $client);
+ } else {
+
+ chomp($npass);
+
+ $npass=&unescape($npass);
+ my $passfilename = &password_path($udom, $uname);
+ if ($passfilename) { # Not allowed to create a new user!!
+ my $result=&make_passwd_file($uname, $umode,$npass,$passfilename);
+ &Reply($client, $result, $userinput);
+ } else {
+ &Failure($client, "non_authorized", $userinput); # Fail the user now.
+ }
+ }
+ return 1;
+}
+®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0);
+
+#
+# Determines if this is the home server for a user. The home server
+# for a user will have his/her lon-capa passwd file. Therefore all we need
+# to do is determine if this file exists.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+#
+sub is_home_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname)=split(/:/,$tail);
+ chomp($uname);
+ my $passfile = &password_filename($udom, $uname);
+ if($passfile) {
+ &Reply( $client, "found\n", $userinput);
+ } else {
+ &Failure($client, "not_found\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("home", \&is_home_handler, 0,1,0);
+
+#
+# Process an update request for a resource?? I think what's going on here is
+# that a resource has been modified that we hold a subscription to.
+# If the resource is not local, then we must update, or at least invalidate our
+# cached copy of the resource.
+# FUTURE WORK:
+# I need to look at this logic carefully. My druthers would be to follow
+# typical caching logic, and simple invalidate the cache, drop any subscription
+# an let the next fetch start the ball rolling again... however that may
+# actually be more difficult than it looks given the complex web of
+# proxy servers.
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+# Implicit inputs:
+# The authentication systems describe above have their own forms of implicit
+# input into the authentication process that are described above.
+#
+sub update_resource_handler {
+
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my $fname= $tail; # This allows interactive testing
+
+
+ my $ownership=ishome($fname);
+ if ($ownership eq 'not_owner') {
+ if (-e $fname) {
+ my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
+ $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname);
+ my $now=time;
+ my $since=$now-$atime;
+ if ($since>$perlvar{'lonExpire'}) {
+ my $reply=&reply("unsub:$fname","$clientname");
+ unlink("$fname");
+ } else {
+ my $transname="$fname.in.transfer";
+ my $remoteurl=&reply("sub:$fname","$clientname");
+ my $response;
+ alarm(120);
+ {
+ my $ua=new LWP::UserAgent;
+ my $request=new HTTP::Request('GET',"$remoteurl");
+ $response=$ua->request($request,$transname);
+ }
+ alarm(0);
+ if ($response->is_error()) {
+ unlink($transname);
+ my $message=$response->status_line;
+ &logthis("LWP GET: $message for $fname ($remoteurl)");
+ } else {
+ if ($remoteurl!~/\.meta$/) {
+ alarm(120);
+ {
+ my $ua=new LWP::UserAgent;
+ my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
+ my $mresponse=$ua->request($mrequest,$fname.'.meta');
+ if ($mresponse->is_error()) {
+ unlink($fname.'.meta');
+ }
+ }
+ alarm(0);
+ }
+ rename($transname,$fname);
+ }
+ }
+ &Reply( $client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "not_found\n", $userinput);
+ }
+ } else {
+ &Failure($client, "rejected\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("update", \&update_resource_handler, 0 ,1, 0);
+
+#
+# Fetch a user file from a remote server to the user's home directory
+# userfiles subdir.
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub fetch_user_file_handler {
+
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+ my $fname = $tail;
+ my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
+ my $udir=&propath($udom,$uname).'/userfiles';
+ unless (-e $udir) {
+ mkdir($udir,0770);
+ }
+ Debug("fetch user file for $fname");
+ if (-e $udir) {
+ $ufile=~s/^[\.\~]+//;
+
+ # IF necessary, create the path right down to the file.
+ # Note that any regular files in the way of this path are
+ # wiped out to deal with some earlier folly of mine.
+
+ my $path = $udir;
+ if ($ufile =~m|(.+)/([^/]+)$|) {
+ my @parts=split('/',$1);
+ foreach my $part (@parts) {
+ $path .= '/'.$part;
+ if( -f $path) {
+ unlink($path);
+ }
+ if ((-e $path)!=1) {
+ mkdir($path,0770);
+ }
+ }
+ }
+
+
+ my $destname=$udir.'/'.$ufile;
+ my $transname=$udir.'/'.$ufile.'.in.transit';
+ my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
+ my $response;
+ Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
+ alarm(120);
+ {
+ my $ua=new LWP::UserAgent;
+ my $request=new HTTP::Request('GET',"$remoteurl");
+ $response=$ua->request($request,$transname);
+ }
+ alarm(0);
+ if ($response->is_error()) {
+ unlink($transname);
+ my $message=$response->status_line;
+ &logthis("LWP GET: $message for $fname ($remoteurl)");
+ &Failure($client, "failed\n", $userinput);
+ } else {
+ Debug("Renaming $transname to $destname");
+ if (!rename($transname,$destname)) {
+ &logthis("Unable to move $transname to $destname");
+ unlink($transname);
+ &Failure($client, "failed\n", $userinput);
+ } else {
+ &Reply($client, "ok\n", $userinput);
+ }
+ }
+ } else {
+ &Failure($client, "not_home\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0);
+
+#
+# Remove a file from a user's home directory userfiles subdirectory.
+# Parameters:
+# cmd - the Lond request keyword that got us here.
+# tail - the part of the command past the keyword.
+# client- File descriptor connected with the client.
+#
+# Returns:
+# 1 - Continue processing.
+
+sub remove_user_file_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent.
+
+ my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
+ if ($ufile =~m|/\.\./|) {
+ # any files paths with /../ in them refuse
+ # to deal with
+ &Failure($client, "refused\n", "$cmd:$tail");
+ } else {
+ my $udir = &propath($udom,$uname);
+ if (-e $udir) {
+ my $file=$udir.'/userfiles/'.$ufile;
+ if (-e $file) {
+ unlink($file);
+ if (-e $file) {
+ &Failure($client, "failed\n", "$cmd:$tail");
+ } else {
+ &Reply($client, "ok\n", "$cmd:$tail");
+ }
+ } else {
+ &Failure($client, "not_found\n", "$cmd:$tail");
+ }
+ } else {
+ &Failure($client, "not_home\n", "$cmd:$tail");
+ }
+ }
+ return 1;
+}
+®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0);
+
+
+#
+# Authenticate access to a user file by checking the user's
+# session token(?)
+#
+# Parameters:
+# cmd - The request keyword that dispatched to tus.
+# tail - The tail of the request (colon separated parameters).
+# client - Filehandle open on the client.
+# Return:
+# 1.
+
+sub token_auth_user_file_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my ($fname, $session) = split(/:/, $tail);
+
+ chomp($session);
+ my $reply='non_auth';
+ if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
+ $session.'.id')) {
+ while (my $line=) {
+ if ($line=~ m|userfile\.\Q$fname\E\=|) { $reply='ok'; }
+ }
+ close(ENVIN);
+ &Reply($client, $reply);
+ } else {
+ &Failure($client, "invalid_token\n", "$cmd:$tail");
+ }
+ return 1;
+
+}
+
+®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0);
+
+
+#
+# Unsubscribe from a resource.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub unsubscribe_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput= "$cmd:$tail";
+
+ my ($fname) = split(/:/,$tail); # Split in case there's extrs.
+
+ &Debug("Unsubscribing $fname");
+ if (-e $fname) {
+ &Debug("Exists");
+ &Reply($client, &unsub($fname,$clientip), $userinput);
+ } else {
+ &Failure($client, "not_found\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0);
+# Subscribe to a resource
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub subscribe_handler {
+ my ($cmd, $tail, $client)= @_;
+
+ my $userinput = "$cmd:$tail";
+
+ &Reply( $client, &subscribe($userinput,$clientip), $userinput);
+
+ return 1;
+}
+®ister_handler("sub", \&subscribe_handler, 0, 1, 0);
+
+#
+# Determine the version of a resource (?) Or is it return
+# the top version of the resource? Not yet clear from the
+# code in currentversion.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub current_version_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput= "$cmd:$tail";
+
+ my $fname = $tail;
+ &Reply( $client, ¤tversion($fname)."\n", $userinput);
+ return 1;
+
+}
+®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0);
+
+# Make an entry in a user's activity log.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub activity_log_handler {
+ my ($cmd, $tail, $client) = @_;
+
+
+ my $userinput= "$cmd:$tail";
+
+ my ($udom,$uname,$what)=split(/:/,$tail);
+ chomp($what);
+ my $proname=&propath($udom,$uname);
+ my $now=time;
+ my $hfh;
+ if ($hfh=IO::File->new(">>$proname/activity.log")) {
+ print $hfh "$now:$clientname:$what\n";
+ &Reply( $client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." IO::File->new Failed "
+ ."while attempting log\n",
+ $userinput);
+ }
+
+ return 1;
+}
+register_handler("log", \&activity_log_handler, 0, 1, 0);
+
+#
+# Put a namespace entry in a user profile hash.
+# My druthers would be for this to be an encrypted interaction too.
+# anything that might be an inadvertent covert channel about either
+# user authentication or user personal information....
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub put_user_profile_entry {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
+ if ($namespace ne 'roles') {
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_WRCREAT(),"P",$what);
+ if($hashref) {
+ my @pairs=split(/\&/,$what);
+ foreach my $pair (@pairs) {
+ my ($key,$value)=split(/=/,$pair);
+ $hashref->{$key}=$value;
+ }
+ if (untie(%$hashref)) {
+ &Reply( $client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
+ "while attempting put\n",
+ $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!)." tie(GDBM) Failed ".
+ "while attempting put\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "refused\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("put", \&put_user_profile_entry, 0, 1, 0);
+
+#
+# Increment a profile entry in the user history file.
+# The history contains keyword value pairs. In this case,
+# The value itself is a pair of numbers. The first, the current value
+# the second an increment that this function applies to the current
+# value.
+#
+# Parameters:
+# $cmd - The command that got us here.
+# $tail - Tail of the command (remaining parameters).
+# $client - File descriptor connected to client.
+# Returns
+# 0 - Requested to exit, caller should shut down.
+# 1 - Continue processing.
+#
+sub increment_user_value_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace,$what) =split(/:/,$tail);
+ if ($namespace ne 'roles') {
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname,
+ $namespace, &GDBM_WRCREAT(),
+ "P",$what);
+ if ($hashref) {
+ my @pairs=split(/\&/,$what);
+ foreach my $pair (@pairs) {
+ my ($key,$value)=split(/=/,$pair);
+ # We could check that we have a number...
+ if (! defined($value) || $value eq '') {
+ $value = 1;
+ }
+ $hashref->{$key}+=$value;
+ }
+ if (untie(%$hashref)) {
+ &Reply( $client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
+ "while attempting inc\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting inc\n", $userinput);
+ }
+ } else {
+ &Failure($client, "refused\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0);
+
+
+#
+# Put a new role for a user. Roles are LonCAPA's packaging of permissions.
+# Each 'role' a user has implies a set of permissions. Adding a new role
+# for a person grants the permissions packaged with that role
+# to that user when the role is selected.
+#
+# Parameters:
+# $cmd - The command string (rolesput).
+# $tail - The remainder of the request line. For rolesput this
+# consists of a colon separated list that contains:
+# The domain and user that is granting the role (logged).
+# The domain and user that is getting the role.
+# The roles being granted as a set of & separated pairs.
+# each pair a key value pair.
+# $client - File descriptor connected to the client.
+# Returns:
+# 0 - If the daemon should exit
+# 1 - To continue processing.
+#
+#
+sub roles_put_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail);
+
+
+ my $namespace='roles';
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_WRCREAT(), "P",
+ "$exedom:$exeuser:$what");
+ #
+ # Log the attempt to set a role. The {}'s here ensure that the file
+ # handle is open for the minimal amount of time. Since the flush
+ # is done on close this improves the chances the log will be an un-
+ # corrupted ordered thing.
+ if ($hashref) {
+ my @pairs=split(/\&/,$what);
+ foreach my $pair (@pairs) {
+ my ($key,$value)=split(/=/,$pair);
+ &manage_permissions($key, $udom, $uname,
+ &get_auth_type( $udom, $uname));
+ $hashref->{$key}=$value;
+ }
+ if (untie($hashref)) {
+ &Reply($client, "ok\n", $userinput);
+ } else {
+ &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting rolesput\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting rolesput\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only.
+
+#
+# Deletes (removes) a role for a user. This is equivalent to removing
+# a permissions package associated with the role from the user's profile.
+#
+# Parameters:
+# $cmd - The command (rolesdel)
+# $tail - The remainder of the request line. This consists
+# of:
+# The domain and user requesting the change (logged)
+# The domain and user being changed.
+# The roles being revoked. These are shipped to us
+# as a bunch of & separated role name keywords.
+# $client - The file handle open on the client.
+# Returns:
+# 1 - Continue processing
+# 0 - Exit.
+#
+sub roles_delete_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail);
+ &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom.
+ "what = ".$what);
+ my $namespace='roles';
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_WRCREAT(), "D",
+ "$exedom:$exeuser:$what");
+
+ if ($hashref) {
+ my @rolekeys=split(/\&/,$what);
+
+ foreach my $key (@rolekeys) {
+ delete $hashref->{$key};
+ }
+ if (untie(%$hashref)) {
+ &Reply($client, "ok\n", $userinput);
+ } else {
+ &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting rolesdel\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting rolesdel\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only
+
+# Unencrypted get from a user's profile database. See
+# GetProfileEntryEncrypted for a version that does end-to-end encryption.
+# This function retrieves a keyed item from a specific named database in the
+# user's directory.
+#
+# Parameters:
+# $cmd - Command request keyword (get).
+# $tail - Tail of the command. This is a colon separated list
+# consisting of the domain and username that uniquely
+# identifies the profile,
+# The 'namespace' which selects the gdbm file to
+# do the lookup in,
+# & separated list of keys to lookup. Note that
+# the values are returned as an & separated list too.
+# $client - File descriptor open on the client.
+# Returns:
+# 1 - Continue processing.
+# 0 - Exit.
+#
+sub get_profile_entry {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput= "$cmd:$tail";
+
+ my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_READER());
+ if ($hashref) {
+ my @queries=split(/\&/,$what);
+ my $qresult='';
+
+ for (my $i=0;$i<=$#queries;$i++) {
+ $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string.
+ }
+ $qresult=~s/\&$//; # Remove trailing & from last lookup.
+ if (untie(%$hashref)) {
+ &Reply($client, "$qresult\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting get\n", $userinput);
+ }
+ } else {
+ if ($!+0 == 2) { # +0 coerces errno -> number 2 is ENOENT
+ &Failure($client, "error:No such file or ".
+ "GDBM reported bad block error\n", $userinput);
+ } else { # Some other undifferentiated err.
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting get\n", $userinput);
+ }
+ }
+ return 1;
+}
+®ister_handler("get", \&get_profile_entry, 0,1,0);
+
+#
+# Process the encrypted get request. Note that the request is sent
+# in clear, but the reply is encrypted. This is a small covert channel:
+# information about the sensitive keys is given to the snooper. Just not
+# information about the values of the sensitive key. Hmm if I wanted to
+# know these I'd snoop for the egets. Get the profile item names from them
+# and then issue a get for them since there's no enforcement of the
+# requirement of an encrypted get for particular profile items. If I
+# were re-doing this, I'd force the request to be encrypted as well as the
+# reply. I'd also just enforce encrypted transactions for all gets since
+# that would prevent any covert channel snooping.
+#
+# Parameters:
+# $cmd - Command keyword of request (eget).
+# $tail - Tail of the command. See GetProfileEntry
# for more information about this.
+# $client - File open on the client.
+# Returns:
+# 1 - Continue processing
+# 0 - server should exit.
+sub get_profile_entry_encrypted {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($cmd,$udom,$uname,$namespace,$what) = split(/:/,$userinput);
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_READER());
+ if ($hashref) {
+ my @queries=split(/\&/,$what);
+ my $qresult='';
+ for (my $i=0;$i<=$#queries;$i++) {
+ $qresult.="$hashref->{$queries[$i]}&";
+ }
+ if (untie(%$hashref)) {
+ $qresult=~s/\&$//;
+ if ($cipher) {
+ my $cmdlength=length($qresult);
+ $qresult.=" ";
+ my $encqresult='';
+ for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
+ $encqresult.= unpack("H16",
+ $cipher->encrypt(substr($qresult,
+ $encidx,
+ 8)));
+ }
+ &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput);
+ } else {
+ &Failure( $client, "error:no_key\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting eget\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting eget\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("eget", \&GetProfileEntryEncrypted, 0, 1, 0);
+#
+# Deletes a key in a user profile database.
+#
+# Parameters:
+# $cmd - Command keyword (del).
+# $tail - Command tail. IN this case a colon
+# separated list containing:
+# The domain and user that identifies uniquely
+# the identity of the user.
+# The profile namespace (name of the profile
+# database file).
+# & separated list of keywords to delete.
+# $client - File open on client socket.
+# Returns:
+# 1 - Continue processing
+# 0 - Exit server.
+#
+#
+
+sub delete_profile_entry {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "cmd:$tail";
+
+ my ($udom,$uname,$namespace,$what) = split(/:/,$tail);
+ chomp($what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_WRCREAT(),
+ "D",$what);
+ if ($hashref) {
+ my @keys=split(/\&/,$what);
+ foreach my $key (@keys) {
+ delete($hashref->{$key});
+ }
+ if (untie(%$hashref)) {
+ &Reply($client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting del\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting del\n", $userinput);
+ }
+ return 1;
+}
+®ister_handler("del", \&delete_profile_entry, 0, 1, 0);
+#
+# List the set of keys that are defined in a profile database file.
+# A successful reply from this will contain an & separated list of
+# the keys.
+# Parameters:
+# $cmd - Command request (keys).
+# $tail - Remainder of the request, a colon separated
+# list containing domain/user that identifies the
+# user being queried, and the database namespace
+# (database filename essentially).
+# $client - File open on the client.
+# Returns:
+# 1 - Continue processing.
+# 0 - Exit the server.
+#
+sub get_profile_keys {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace)=split(/:/,$tail);
+ my $qresult='';
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_READER());
+ if ($hashref) {
+ foreach my $key (keys %$hashref) {
+ $qresult.="$key&";
+ }
+ if (untie(%$hashref)) {
+ $qresult=~s/\&$//;
+ &Reply($client, "$qresult\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting keys\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting keys\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("keys", \&get_profile_keys, 0, 1, 0);
+
+#
+# Dump the contents of a user profile database.
+# Note that this constitutes a very large covert channel too since
+# the dump will return sensitive information that is not encrypted.
+# The naive security assumption is that the session negotiation ensures
+# our client is trusted and I don't believe that's assured at present.
+# Sure want badly to go to ssl or tls. Of course if my peer isn't really
+# a LonCAPA node they could have negotiated an encryption key too so >sigh<.
+#
+# Parameters:
+# $cmd - The command request keyword (currentdump).
+# $tail - Remainder of the request, consisting of a colon
+# separated list that has the domain/username and
+# the namespace to dump (database file).
+# $client - file open on the remote client.
+# Returns:
+# 1 - Continue processing.
+# 0 - Exit the server.
+#
+sub dump_profile_database {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace) = split(/:/,$tail);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_READER());
+ if ($hashref) {
+ # Structure of %data:
+ # $data{$symb}->{$parameter}=$value;
+ # $data{$symb}->{'v.'.$parameter}=$version;
+ # since $parameter will be unescaped, we do not
+ # have to worry about silly parameter names...
+
+ my $qresult='';
+ my %data = (); # A hash of anonymous hashes..
+ while (my ($key,$value) = each(%$hashref)) {
+ my ($v,$symb,$param) = split(/:/,$key);
+ next if ($v eq 'version' || $symb eq 'keys');
+ next if (exists($data{$symb}) &&
+ exists($data{$symb}->{$param}) &&
+ $data{$symb}->{'v.'.$param} > $v);
+ $data{$symb}->{$param}=$value;
+ $data{$symb}->{'v.'.$param}=$v;
+ }
+ if (untie(%$hashref)) {
+ while (my ($symb,$param_hash) = each(%data)) {
+ while(my ($param,$value) = each (%$param_hash)){
+ next if ($param =~ /^v\./); # Ignore versions...
+ #
+ # Just dump the symb=value pairs separated by &
+ #
+ $qresult.=$symb.':'.$param.'='.$value.'&';
+ }
+ }
+ chop($qresult);
+ &Reply($client , "$qresult\n", $userinput);
+ } else {
+ &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting currentdump\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting currentdump\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0);
+
+#
+# Dump a profile database with an optional regular expression
+# to match against the keys. In this dump, no effort is made
+# to separate symb from version information. Presumably the
+# databases that are dumped by this command are of a different
+# structure. Need to look at this and improve the documentation of
+# both this and the currentdump handler.
+# Parameters:
+# $cmd - The command keyword.
+# $tail - All of the characters after the $cmd:
+# These are expected to be a colon
+# separated list containing:
+# domain/user - identifying the user.
+# namespace - identifying the database.
+# regexp - optional regular expression
+# that is matched against
+# database keywords to do
+# selective dumps.
+# $client - Channel open on the client.
+# Returns:
+# 1 - Continue processing.
+# Side effects:
+# response is written to $client.
+#
+sub dump_with_regexp {
+ my ($cmd, $tail, $client) = @_;
+
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace,$regexp)=split(/:/,$tail);
+ if (defined($regexp)) {
+ $regexp=&unescape($regexp);
+ } else {
+ $regexp='.';
+ }
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_READER());
+ if ($hashref) {
+ my $qresult='';
+ while (my ($key,$value) = each(%$hashref)) {
+ if ($regexp eq '.') {
+ $qresult.=$key.'='.$value.'&';
+ } else {
+ my $unescapeKey = &unescape($key);
+ if (eval('$unescapeKey=~/$regexp/')) {
+ $qresult.="$key=$value&";
+ }
+ }
+ }
+ if (untie(%$hashref)) {
+ chop($qresult);
+ &Reply($client, "$qresult\n", $userinput);
+ } else {
+ &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting dump\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting dump\n", $userinput);
+ }
+
+ return 1;
+}
+
+®ister_handler("dump", \&dump_with_regexp, 0, 1, 0);
+
+# Store a set of key=value pairs associated with a versioned name.
+#
+# Parameters:
+# $cmd - Request command keyword.
+# $tail - Tail of the request. This is a colon
+# separated list containing:
+# domain/user - User and authentication domain.
+# namespace - Name of the database being modified
+# rid - Resource keyword to modify.
+# what - new value associated with rid.
+#
+# $client - Socket open on the client.
+#
+#
+# Returns:
+# 1 (keep on processing).
+# Side-Effects:
+# Writes to the client
+sub store_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail";
+
+ my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail);
+ if ($namespace ne 'roles') {
+
+ chomp($what);
+ my @pairs=split(/\&/,$what);
+ my $hashref = &tie_user_hash($udom, $uname, $namespace,
+ &GDBM_WRCREAT(), "P",
+ "$rid:$what");
+ if ($hashref) {
+ my $now = time;
+ my @previouskeys=split(/&/,$hashref->{"keys:$rid"});
+ my $key;
+ $hashref->{"version:$rid"}++;
+ my $version=$hashref->{"version:$rid"};
+ my $allkeys='';
+ foreach my $pair (@pairs) {
+ my ($key,$value)=split(/=/,$pair);
+ $allkeys.=$key.':';
+ $hashref->{"$version:$rid:$key"}=$value;
+ }
+ $hashref->{"$version:$rid:timestamp"}=$now;
+ $allkeys.='timestamp';
+ $hashref->{"$version:keys:$rid"}=$allkeys;
+ if (untie($hashref)) {
+ &Reply($client, "ok\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting store\n", $userinput);
+ }
+ } else {
+ &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting store\n", $userinput);
+ }
+ } else {
+ &Failure($client, "refused\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("store", \&store_handler, 0, 1, 0);
+#
+# Dump out all versions of a resource that has key=value pairs associated
+# with it for each version. These resources are built up via the store
+# command.
+#
+# Parameters:
+# $cmd - Command keyword.
+# $tail - Remainder of the request which consists of:
+# domain/user - User and auth. domain.
+# namespace - name of resource database.
+# rid - Resource id.
+# $client - socket open on the client.
+#
+# Returns:
+# 1 indicating the caller should not yet exit.
+# Side-effects:
+# Writes a reply to the client.
+# The reply is a string of the following shape:
+# version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2...
+# Where the 1 above represents version 1.
+# this continues for all pairs of keys in all versions.
+#
+#
+#
+#
+sub restore_handler {
+ my ($cmd, $tail, $client) = @_;
+
+ my $userinput = "$cmd:$tail"; # Only used for logging purposes.
+
+ my ($cmd,$udom,$uname,$namespace,$rid) = split(/:/,$userinput);
+ $namespace=~s/\//\_/g;
+ $namespace=~s/\W//g;
+ chomp($rid);
+ my $proname=&propath($udom,$uname);
+ my $qresult='';
+ my %hash;
+ if (tie(%hash,'GDBM_File',"$proname/$namespace.db",
+ &GDBM_READER(),0640)) {
+ my $version=$hash{"version:$rid"};
+ $qresult.="version=$version&";
+ my $scope;
+ for ($scope=1;$scope<=$version;$scope++) {
+ my $vkeys=$hash{"$scope:keys:$rid"};
+ my @keys=split(/:/,$vkeys);
+ my $key;
+ $qresult.="$scope:keys=$vkeys&";
+ foreach $key (@keys) {
+ $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
+ }
+ }
+ if (untie(%hash)) {
+ $qresult=~s/\&$//;
+ &Reply( $client, "$qresult\n", $userinput);
+ } else {
+ &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+ "while attempting restore\n", $userinput);
+ }
+ } else {
+ &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ".
+ "while attempting restore\n", $userinput);
+ }
+
+ return 1;
+}
+®ister_handler("restore", \&restore_handler, 0,1,0);
+#
+#
#---------------------------------------------------------------
#
# Getting, decoding and dispatching requests:
@@ -1373,7 +2708,7 @@ register_handler("edit", \&edit_table_ha
# Gets a Request message from the client. The transaction
# is defined as a 'line' of text. We remove the new line
# from the text line.
-#
+#
sub get_request {
my $input = <$client>;
chomp($input);
@@ -1477,995 +2812,9 @@ sub process_request {
#------------------- Commands not yet in spearate handlers. --------------
-# ------------------------------------------------------------------------ auth
- if ($userinput =~ /^auth/) { # Encoded and client only.
- if (($wasenc==1) && isClient) {
- my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput);
- chomp($upass);
- $upass=unescape($upass);
- my $proname=propath($udom,$uname);
- my $passfilename="$proname/passwd";
- if (-e $passfilename) {
- my $pf = IO::File->new($passfilename);
- my $realpasswd=<$pf>;
- chomp($realpasswd);
- my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
- my $pwdcorrect=0;
- if ($howpwd eq 'internal') {
- &Debug("Internal auth");
- $pwdcorrect=
- (crypt($upass,$contentpwd) eq $contentpwd);
- } elsif ($howpwd eq 'unix') {
- &Debug("Unix auth");
- if((getpwnam($uname))[1] eq "") { #no such user!
- $pwdcorrect = 0;
- } else {
- $contentpwd=(getpwnam($uname))[1];
- my $pwauth_path="/usr/local/sbin/pwauth";
- unless ($contentpwd eq 'x') {
- $pwdcorrect=
- (crypt($upass,$contentpwd) eq
- $contentpwd);
- }
-
- elsif (-e $pwauth_path) {
- open PWAUTH, "|$pwauth_path" or
- die "Cannot invoke authentication";
- print PWAUTH "$uname\n$upass\n";
- close PWAUTH;
- $pwdcorrect=!$?;
- }
- }
- } elsif ($howpwd eq 'krb4') {
- my $null=pack("C",0);
- unless ($upass=~/$null/) {
- my $krb4_error = &Authen::Krb4::get_pw_in_tkt
- ($uname,"",$contentpwd,'krbtgt',
- $contentpwd,1,$upass);
- if (!$krb4_error) {
- $pwdcorrect = 1;
- } else {
- $pwdcorrect=0;
- # log error if it is not a bad password
- if ($krb4_error != 62) {
- &logthis('krb4:'.$uname.','.
- &Authen::Krb4::get_err_txt($Authen::Krb4::error));
- }
- }
- }
- } elsif ($howpwd eq 'krb5') {
- my $null=pack("C",0);
- unless ($upass=~/$null/) {
- my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd);
- my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd;
- my $krbserver=&Authen::Krb5::parse_name($krbservice);
- my $credentials=&Authen::Krb5::cc_default();
- $credentials->initialize($krbclient);
- my $krbreturn =
- &Authen::Krb5::get_in_tkt_with_password(
- $krbclient,$krbserver,$upass,$credentials);
-# unless ($krbreturn) {
-# &logthis("Krb5 Error: ".
-# &Authen::Krb5::error());
-# }
- $pwdcorrect = ($krbreturn == 1);
- } else { $pwdcorrect=0; }
- } elsif ($howpwd eq 'localauth') {
- $pwdcorrect=&localauth::localauth($uname,$upass,
- $contentpwd);
- }
- if ($pwdcorrect) {
- print $client "authorized\n";
- } else {
- print $client "non_authorized\n";
- }
- } else {
- print $client "unknown_user\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ---------------------------------------------------------------------- passwd
- } elsif ($userinput =~ /^passwd/) { # encoded and client
- if (($wasenc==1) && isClient) {
- my
- ($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput);
- chomp($npass);
- $upass=&unescape($upass);
- $npass=&unescape($npass);
- &Debug("Trying to change password for $uname");
- my $proname=propath($udom,$uname);
- my $passfilename="$proname/passwd";
- if (-e $passfilename) {
- my $realpasswd;
- { my $pf = IO::File->new($passfilename);
- $realpasswd=<$pf>; }
- chomp($realpasswd);
- my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
- if ($howpwd eq 'internal') {
- &Debug("internal auth");
- if (crypt($upass,$contentpwd) eq $contentpwd) {
- my $salt=time;
- $salt=substr($salt,6,2);
- my $ncpass=crypt($npass,$salt);
- {
- my $pf;
- if ($pf = IO::File->new(">$passfilename")) {
- print $pf "internal:$ncpass\n";
- &logthis("Result of password change for $uname: pwchange_success");
- print $client "ok\n";
- } else {
- &logthis("Unable to open $uname passwd to change password");
- print $client "non_authorized\n";
- }
- }
-
- } else {
- print $client "non_authorized\n";
- }
- } elsif ($howpwd eq 'unix') {
- # Unix means we have to access /etc/password
- # one way or another.
- # First: Make sure the current password is
- # correct
- &Debug("auth is unix");
- $contentpwd=(getpwnam($uname))[1];
- my $pwdcorrect = "0";
- my $pwauth_path="/usr/local/sbin/pwauth";
- unless ($contentpwd eq 'x') {
- $pwdcorrect=
- (crypt($upass,$contentpwd) eq $contentpwd);
- } elsif (-e $pwauth_path) {
- open PWAUTH, "|$pwauth_path" or
- die "Cannot invoke authentication";
- print PWAUTH "$uname\n$upass\n";
- close PWAUTH;
- &Debug("exited pwauth with $? ($uname,$upass) ");
- $pwdcorrect=($? == 0);
- }
- if ($pwdcorrect) {
- my $execdir=$perlvar{'lonDaemons'};
- &Debug("Opening lcpasswd pipeline");
- my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log");
- print $pf "$uname\n$npass\n$npass\n";
- close $pf;
- my $err = $?;
- my $result = ($err>0 ? 'pwchange_failure'
- : 'ok');
- &logthis("Result of password change for $uname: ".
- &lcpasswdstrerror($?));
- print $client "$result\n";
- } else {
- print $client "non_authorized\n";
- }
- } else {
- print $client "auth_mode_error\n";
- }
- } else {
- print $client "unknown_user\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# -------------------------------------------------------------------- makeuser
- } elsif ($userinput =~ /^makeuser/) { # encoded and client.
- &Debug("Make user received");
- my $oldumask=umask(0077);
- if (($wasenc==1) && isClient) {
- my
- ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
- &Debug("cmd =".$cmd." $udom =".$udom.
- " uname=".$uname);
- chomp($npass);
- $npass=&unescape($npass);
- my $proname=propath($udom,$uname);
- my $passfilename="$proname/passwd";
- &Debug("Password file created will be:".
- $passfilename);
- if (-e $passfilename) {
- print $client "already_exists\n";
- } elsif ($udom ne $currentdomainid) {
- print $client "not_right_domain\n";
- } else {
- my @fpparts=split(/\//,$proname);
- my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2];
- my $fperror='';
- for (my $i=3;$i<=$#fpparts;$i++) {
- $fpnow.='/'.$fpparts[$i];
- unless (-e $fpnow) {
- unless (mkdir($fpnow,0777)) {
- $fperror="error: ".($!+0)
- ." mkdir failed while attempting "
- ."makeuser";
- }
- }
- }
- unless ($fperror) {
- my $result=&make_passwd_file($uname, $umode,$npass,
- $passfilename);
- print $client $result;
- } else {
- print $client "$fperror\n";
- }
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
- umask($oldumask);
-# -------------------------------------------------------------- changeuserauth
- } elsif ($userinput =~ /^changeuserauth/) { # encoded & client
- &Debug("Changing authorization");
- if (($wasenc==1) && isClient) {
- my
- ($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput);
- chomp($npass);
- &Debug("cmd = ".$cmd." domain= ".$udom.
- "uname =".$uname." umode= ".$umode);
- $npass=&unescape($npass);
- my $proname=&propath($udom,$uname);
- my $passfilename="$proname/passwd";
- if ($udom ne $currentdomainid) {
- print $client "not_right_domain\n";
- } else {
- my $result=&make_passwd_file($uname, $umode,$npass,
- $passfilename);
- print $client $result;
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------ home
- } elsif ($userinput =~ /^home/) { # client clear or encoded
- if(isClient) {
- my ($cmd,$udom,$uname)=split(/:/,$userinput);
- chomp($uname);
- my $proname=propath($udom,$uname);
- if (-e $proname) {
- print $client "found\n";
- } else {
- print $client "not_found\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ---------------------------------------------------------------------- update
- } elsif ($userinput =~ /^update/) { # client clear or encoded.
- if(isClient) {
- my ($cmd,$fname)=split(/:/,$userinput);
- my $ownership=ishome($fname);
- if ($ownership eq 'not_owner') {
- if (-e $fname) {
- my ($dev,$ino,$mode,$nlink,
- $uid,$gid,$rdev,$size,
- $atime,$mtime,$ctime,
- $blksize,$blocks)=stat($fname);
- my $now=time;
- my $since=$now-$atime;
- if ($since>$perlvar{'lonExpire'}) {
- my $reply=
- &reply("unsub:$fname","$clientname");
- unlink("$fname");
- } else {
- my $transname="$fname.in.transfer";
- my $remoteurl=
- &reply("sub:$fname","$clientname");
- my $response;
- {
- my $ua=new LWP::UserAgent;
- my $request=new HTTP::Request('GET',"$remoteurl");
- $response=$ua->request($request,$transname);
- }
- if ($response->is_error()) {
- unlink($transname);
- my $message=$response->status_line;
- &logthis(
- "LWP GET: $message for $fname ($remoteurl)");
- } else {
- if ($remoteurl!~/\.meta$/) {
- my $ua=new LWP::UserAgent;
- my $mrequest=
- new HTTP::Request('GET',$remoteurl.'.meta');
- my $mresponse=
- $ua->request($mrequest,$fname.'.meta');
- if ($mresponse->is_error()) {
- unlink($fname.'.meta');
- }
- }
- rename($transname,$fname);
- }
- }
- print $client "ok\n";
- } else {
- print $client "not_found\n";
- }
- } else {
- print $client "rejected\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# -------------------------------------- fetch a user file from a remote server
- } elsif ($userinput =~ /^fetchuserfile/) { # Client clear or enc.
- if(isClient) {
- my ($cmd,$fname)=split(/:/,$userinput);
- my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
- my $udir=propath($udom,$uname).'/userfiles';
- unless (-e $udir) { mkdir($udir,0770); }
- if (-e $udir) {
- $ufile=~s/^[\.\~]+//;
- my $path = $udir;
- if ($ufile =~m|(.+)/([^/]+)$|) {
- my @parts=split('/',$1);
- foreach my $part (@parts) {
- $path .= '/'.$part;
- if ((-e $path)!=1) {
- mkdir($path,0770);
- }
- }
- }
- my $destname=$udir.'/'.$ufile;
- my $transname=$udir.'/'.$ufile.'.in.transit';
- my $remoteurl='http://'.$clientip.'/userfiles/'.$fname;
- my $response;
- {
- my $ua=new LWP::UserAgent;
- my $request=new HTTP::Request('GET',"$remoteurl");
- $response=$ua->request($request,$transname);
- }
- if ($response->is_error()) {
- unlink($transname);
- my $message=$response->status_line;
- &logthis("LWP GET: $message for $fname ($remoteurl)");
- print $client "failed\n";
- } else {
- if (!rename($transname,$destname)) {
- &logthis("Unable to move $transname to $destname");
- unlink($transname);
- print $client "failed\n";
- } else {
- print $client "ok\n";
- }
- }
- } else {
- print $client "not_home\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
- }
-# --------------------------------------------------------- remove a user file
- } elsif ($userinput =~ /^removeuserfile/) { # Client clear or enc.
- if(isClient) {
- my ($cmd,$fname)=split(/:/,$userinput);
- my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|);
- &logthis("$udom - $uname - $ufile");
- if ($ufile =~m|/\.\./|) {
- # any files paths with /../ in them refuse
- # to deal with
- print $client "refused\n";
- } else {
- my $udir=propath($udom,$uname);
- if (-e $udir) {
- my $file=$udir.'/userfiles/'.$ufile;
- if (-e $file) {
- unlink($file);
- if (-e $file) {
- print $client "failed\n";
- } else {
- print $client "ok\n";
- }
- } else {
- print $client "not_found\n";
- }
- } else {
- print $client "not_home\n";
- }
- }
- } else {
- Reply($client, "refused\n", $userinput);
- }
-# ------------------------------------------ authenticate access to a user file
- } elsif ($userinput =~ /^tokenauthuserfile/) { # Client only
- if(isClient) {
- my ($cmd,$fname,$session)=split(/:/,$userinput);
- chomp($session);
- my $reply='non_auth';
- if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'.
- $session.'.id')) {
- while (my $line=) {
- if ($line=~ m|userfile\.\Q$fname\E\=|) { $reply='ok'; }
- }
- close(ENVIN);
- print $client $reply."\n";
- } else {
- print $client "invalid_token\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ----------------------------------------------------------------- unsubscribe
- } elsif ($userinput =~ /^unsub/) {
- if(isClient) {
- my ($cmd,$fname)=split(/:/,$userinput);
- if (-e $fname) {
- print $client &unsub($fname,$clientip);
- } else {
- print $client "not_found\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------- subscribe
- } elsif ($userinput =~ /^sub/) {
- if(isClient) {
- print $client &subscribe($userinput,$clientip);
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------- current version
- } elsif ($userinput =~ /^currentversion/) {
- if(isClient) {
- my ($cmd,$fname)=split(/:/,$userinput);
- print $client ¤tversion($fname)."\n";
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------- log
- } elsif ($userinput =~ /^log/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$what)=split(/:/,$userinput);
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/activity.log")) {
- print $hfh "$now:$clientname:$what\n";
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." IO::File->new Failed "
- ."while attempting log\n";
- }
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------- put
- } elsif ($userinput =~ /^put/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$what)
- =split(/:/,$userinput,5);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- if ($namespace ne 'roles') {
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @pairs=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',
- "$proname/$namespace.db",
- &GDBM_WRCREAT(),0640)) {
- unless ($namespace=~/^nohist\_/) {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "P:$now:$what\n"; }
- }
-
- foreach my $pair (@pairs) {
- my ($key,$value)=split(/=/,$pair);
- $hash{$key}=$value;
- }
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) failed ".
- "while attempting put\n";
- }
- } else {
- print $client "error: ".($!)
- ." tie(GDBM) Failed ".
- "while attempting put\n";
- }
- } else {
- print $client "refused\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------- inc
- } elsif ($userinput =~ /^inc:/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$what)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- if ($namespace ne 'roles') {
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @pairs=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',
- "$proname/$namespace.db",
- &GDBM_WRCREAT(),0640)) {
- unless ($namespace=~/^nohist\_/) {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "P:$now:$what\n"; }
- }
- foreach my $pair (@pairs) {
- my ($key,$value)=split(/=/,$pair);
- # We could check that we have a number...
- if (! defined($value) || $value eq '') {
- $value = 1;
- }
- $hash{$key}+=$value;
- }
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) failed ".
- "while attempting inc\n";
- }
- } else {
- print $client "error: ".($!)
- ." tie(GDBM) Failed ".
- "while attempting inc\n";
- }
- } else {
- print $client "refused\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# -------------------------------------------------------------------- rolesput
- } elsif ($userinput =~ /^rolesput/) {
- if(isClient) {
- &Debug("rolesput");
- if ($wasenc==1) {
- my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
- =split(/:/,$userinput);
- &Debug("cmd = ".$cmd." exedom= ".$exedom.
- "user = ".$exeuser." udom=".$udom.
- "what = ".$what);
- my $namespace='roles';
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @pairs=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
- {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {
- print $hfh "P:$now:$exedom:$exeuser:$what\n";
- }
- }
-
- foreach my $pair (@pairs) {
- my ($key,$value)=split(/=/,$pair);
- &ManagePermissions($key, $udom, $uname,
- &GetAuthType( $udom,
- $uname));
- $hash{$key}=$value;
- }
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting rolesput\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting rolesput\n";
- }
- } else {
- print $client "refused\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# -------------------------------------------------------------------- rolesdel
- } elsif ($userinput =~ /^rolesdel/) {
- if(isClient) {
- &Debug("rolesdel");
- if ($wasenc==1) {
- my ($cmd,$exedom,$exeuser,$udom,$uname,$what)
- =split(/:/,$userinput);
- &Debug("cmd = ".$cmd." exedom= ".$exedom.
- "user = ".$exeuser." udom=".$udom.
- "what = ".$what);
- my $namespace='roles';
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @rolekeys=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
- {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {
- print $hfh "D:$now:$exedom:$exeuser:$what\n";
- }
- }
- foreach my $key (@rolekeys) {
- delete $hash{$key};
- }
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting rolesdel\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting rolesdel\n";
- }
- } else {
- print $client "refused\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------- get
- } elsif ($userinput =~ /^get/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$what)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- chomp($what);
- my @queries=split(/\&/,$what);
- my $proname=propath($udom,$uname);
- my $qresult='';
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
- for (my $i=0;$i<=$#queries;$i++) {
- $qresult.="$hash{$queries[$i]}&";
- }
- if (untie(%hash)) {
- $qresult=~s/\&$//;
- print $client "$qresult\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting get\n";
- }
- } else {
- if ($!+0 == 2) {
- print $client "error:No such file or ".
- "GDBM reported bad block error\n";
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting get\n";
- }
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------ eget
- } elsif ($userinput =~ /^eget/) {
- if (isClient) {
- my ($cmd,$udom,$uname,$namespace,$what)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- chomp($what);
- my @queries=split(/\&/,$what);
- my $proname=propath($udom,$uname);
- my $qresult='';
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
- for (my $i=0;$i<=$#queries;$i++) {
- $qresult.="$hash{$queries[$i]}&";
- }
- if (untie(%hash)) {
- $qresult=~s/\&$//;
- if ($cipher) {
- my $cmdlength=length($qresult);
- $qresult.=" ";
- my $encqresult='';
- for
- (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) {
- $encqresult.=
- unpack("H16",
- $cipher->encrypt(substr($qresult,$encidx,8)));
- }
- print $client "enc:$cmdlength:$encqresult\n";
- } else {
- print $client "error:no_key\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting eget\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting eget\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------- del
- } elsif ($userinput =~ /^del/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$what)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @keys=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
- unless ($namespace=~/^nohist\_/) {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "D:$now:$what\n"; }
- }
- foreach my $key (@keys) {
- delete($hash{$key});
- }
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting del\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting del\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ------------------------------------------------------------------------ keys
- } elsif ($userinput =~ /^keys/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- my $proname=propath($udom,$uname);
- my $qresult='';
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
- foreach my $key (keys %hash) {
- $qresult.="$key&";
- }
- if (untie(%hash)) {
- $qresult=~s/\&$//;
- print $client "$qresult\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting keys\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting keys\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ----------------------------------------------------------------- dumpcurrent
- } elsif ($userinput =~ /^currentdump/) {
- if (isClient) {
- my ($cmd,$udom,$uname,$namespace)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- my $qresult='';
- my $proname=propath($udom,$uname);
- my %hash;
- if (tie(%hash,'GDBM_File',
- "$proname/$namespace.db",
- &GDBM_READER(),0640)) {
- # Structure of %data:
- # $data{$symb}->{$parameter}=$value;
- # $data{$symb}->{'v.'.$parameter}=$version;
- # since $parameter will be unescaped, we do not
- # have to worry about silly parameter names...
- my %data = ();
- while (my ($key,$value) = each(%hash)) {
- my ($v,$symb,$param) = split(/:/,$key);
- next if ($v eq 'version' || $symb eq 'keys');
- next if (exists($data{$symb}) &&
- exists($data{$symb}->{$param}) &&
- $data{$symb}->{'v.'.$param} > $v);
- $data{$symb}->{$param}=$value;
- $data{$symb}->{'v.'.$param}=$v;
- }
- if (untie(%hash)) {
- while (my ($symb,$param_hash) = each(%data)) {
- while(my ($param,$value) = each (%$param_hash)){
- next if ($param =~ /^v\./);
- $qresult.=$symb.':'.$param.'='.$value.'&';
- }
- }
- chop($qresult);
- print $client "$qresult\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting currentdump\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting currentdump\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
- }
-# ------------------------------------------------------------------------ dump
- } elsif ($userinput =~ /^dump/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$regexp)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- if (defined($regexp)) {
- $regexp=&unescape($regexp);
- } else {
- $regexp='.';
- }
- my $qresult='';
- my $proname=propath($udom,$uname);
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
- while (my ($key,$value) = each(%hash)) {
- if ($regexp eq '.') {
- $qresult.=$key.'='.$value.'&';
- } else {
- my $unescapeKey = &unescape($key);
- if (eval('$unescapeKey=~/$regexp/')) {
- $qresult.="$key=$value&";
- }
- }
- }
- if (untie(%hash)) {
- chop($qresult);
- print $client "$qresult\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting dump\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting dump\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# ----------------------------------------------------------------------- store
- } elsif ($userinput =~ /^store/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$rid,$what)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- if ($namespace ne 'roles') {
- chomp($what);
- my $proname=propath($udom,$uname);
- my $now=time;
- my @pairs=split(/\&/,$what);
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) {
- unless ($namespace=~/^nohist\_/) {
- my $hfh;
- if ($hfh=IO::File->new(">>$proname/$namespace.hist")) {
- print $hfh "P:$now:$rid:$what\n";
- }
- }
- my @previouskeys=split(/&/,$hash{"keys:$rid"});
- my $key;
- $hash{"version:$rid"}++;
- my $version=$hash{"version:$rid"};
- my $allkeys='';
- foreach my $pair (@pairs) {
- my ($key,$value)=split(/=/,$pair);
- $allkeys.=$key.':';
- $hash{"$version:$rid:$key"}=$value;
- }
- $hash{"$version:$rid:timestamp"}=$now;
- $allkeys.='timestamp';
- $hash{"$version:keys:$rid"}=$allkeys;
- if (untie(%hash)) {
- print $client "ok\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting store\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting store\n";
- }
- } else {
- print $client "refused\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
-# --------------------------------------------------------------------- restore
- } elsif ($userinput =~ /^restore/) {
- if(isClient) {
- my ($cmd,$udom,$uname,$namespace,$rid)
- =split(/:/,$userinput);
- $namespace=~s/\//\_/g;
- $namespace=~s/\W//g;
- chomp($rid);
- my $proname=propath($udom,$uname);
- my $qresult='';
- my %hash;
- if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) {
- my $version=$hash{"version:$rid"};
- $qresult.="version=$version&";
- my $scope;
- for ($scope=1;$scope<=$version;$scope++) {
- my $vkeys=$hash{"$scope:keys:$rid"};
- my @keys=split(/:/,$vkeys);
- my $key;
- $qresult.="$scope:keys=$vkeys&";
- foreach $key (@keys) {
- $qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&";
- }
- }
- if (untie(%hash)) {
- $qresult=~s/\&$//;
- print $client "$qresult\n";
- } else {
- print $client "error: ".($!+0)
- ." untie(GDBM) Failed ".
- "while attempting restore\n";
- }
- } else {
- print $client "error: ".($!+0)
- ." tie(GDBM) Failed ".
- "while attempting restore\n";
- }
- } else {
- Reply($client, "refused\n", $userinput);
-
- }
+
# -------------------------------------------------------------------- chatsend
- } elsif ($userinput =~ /^chatsend/) {
+ if ($userinput =~ /^chatsend/) {
if(isClient) {
my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput);
&chatadd($cdom,$cnum,$newpost);
@@ -2516,8 +2865,7 @@ sub process_request {
print $store2 "done\n";
close $store2;
print $client "ok\n";
- }
- else {
+ } else {
print $client "error: ".($!+0)
." IO::File->new Failed ".
"while attempting queryreply\n";
@@ -2832,21 +3180,21 @@ sub process_request {
return 0;
# ---------------------------------- set current host/domain
- } elsif ($userinput =~ /^sethost:/) {
+ } elsif ($userinput =~ /^sethost/) {
if (isClient) {
print $client &sethost($userinput)."\n";
} else {
print $client "refused\n";
}
#---------------------------------- request file (?) version.
- } elsif ($userinput =~/^version:/) {
+ } elsif ($userinput =~/^version/) {
if (isClient) {
print $client &version($userinput)."\n";
} else {
print $client "refused\n";
}
#------------------------------- is auto-enrollment enabled?
- } elsif ($userinput =~/^autorun:/) {
+ } elsif ($userinput =~/^autorun/) {
if (isClient) {
my ($cmd,$cdom) = split(/:/,$userinput);
my $outcome = &localenroll::run($cdom);
@@ -2855,7 +3203,7 @@ sub process_request {
print $client "0\n";
}
#------------------------------- get official sections (for auto-enrollment).
- } elsif ($userinput =~/^autogetsections:/) {
+ } elsif ($userinput =~/^autogetsections/) {
if (isClient) {
my ($cmd,$coursecode,$cdom)=split(/:/,$userinput);
my @secs = &localenroll::get_sections($coursecode,$cdom);
@@ -2865,7 +3213,7 @@ sub process_request {
print $client "refused\n";
}
#----------------------- validate owner of new course section (for auto-enrollment).
- } elsif ($userinput =~/^autonewcourse:/) {
+ } elsif ($userinput =~/^autonewcourse/) {
if (isClient) {
my ($cmd,$inst_course_id,$owner,$cdom)=split(/:/,$userinput);
my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom);
@@ -2874,7 +3222,7 @@ sub process_request {
print $client "refused\n";
}
#-------------- validate course section in schedule of classes (for auto-enrollment).
- } elsif ($userinput =~/^autovalidatecourse:/) {
+ } elsif ($userinput =~/^autovalidatecourse/) {
if (isClient) {
my ($cmd,$inst_course_id,$cdom)=split(/:/,$userinput);
my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom);
@@ -2883,7 +3231,7 @@ sub process_request {
print $client "refused\n";
}
#--------------------------- create password for new user (for auto-enrollment).
- } elsif ($userinput =~/^autocreatepassword:/) {
+ } elsif ($userinput =~/^autocreatepassword/) {
if (isClient) {
my ($cmd,$authparam,$cdom)=split(/:/,$userinput);
my ($create_passwd,$authchk);
@@ -2893,7 +3241,7 @@ sub process_request {
print $client "refused\n";
}
#--------------------------- read and remove temporary files (for auto-enrollment).
- } elsif ($userinput =~/^autoretrieve:/) {
+ } elsif ($userinput =~/^autoretrieve/) {
if (isClient) {
my ($cmd,$filename) = split(/:/,$userinput);
my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
@@ -2919,7 +3267,7 @@ sub process_request {
print $client "refused\n";
}
#--------------------- read and retrieve institutional code format (for support form).
- } elsif ($userinput =~/^autoinstcodeformat:/) {
+ } elsif ($userinput =~/^autoinstcodeformat/) {
if (isClient) {
my $reply;
my($cmd,$cdom,$course) = split(/:/,$userinput);
@@ -3031,7 +3379,6 @@ sub register_handler {
$Dispatcher{$request_name} = \@entry;
-
}
@@ -3078,7 +3425,6 @@ sub catchexception {
$server->close();
die($error);
}
-
sub timeout {
&status("Handling Timeout");
&logthis("CRITICAL: TIME OUT ".$$."");
@@ -3086,6 +3432,7 @@ sub timeout {
}
# -------------------------------- Set signal handlers to record abnormal exits
+
$SIG{'QUIT'}=\&catchexception;
$SIG{__DIE__}=\&catchexception;
@@ -3286,10 +3633,11 @@ sub checkchildren {
&logthis('Going to check on the children');
my $docdir=$perlvar{'lonDocRoot'};
foreach (sort keys %children) {
- sleep 1;
+ #sleep 1;
unless (kill 'USR1' => $_) {
&logthis ('Child '.$_.' is dead');
&logstatus($$.' is dead');
+ delete($children{$_});
}
}
sleep 5;
@@ -3308,6 +3656,7 @@ sub checkchildren {
#my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`;
#$execdir=$perlvar{'lonDaemons'};
#$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`;
+ delete($children{$_});
alarm(0);
}
}
@@ -3315,6 +3664,7 @@ sub checkchildren {
$SIG{ALRM} = 'DEFAULT';
$SIG{__DIE__} = \&catchexception;
&status("Finished checking children");
+ &logthis('Finished Checking children');
}
# --------------------------------------------------------------------- Logging
@@ -3385,17 +3735,19 @@ sub logstatus {
&status("Doing logging");
my $docdir=$perlvar{'lonDocRoot'};
{
- my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
- print $fh $$."\t".$clientname."\t".$currenthostid."\t"
- .$status."\t".$lastlog."\t $keymode\n";
- $fh->close();
- }
- &status("Finished londstatus.txt");
- {
my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
print $fh $status."\n".$lastlog."\n".time."\n$keymode";
$fh->close();
}
+ &status("Finished $$.txt");
+ {
+ open(LOG,">>$docdir/lon-status/londstatus.txt");
+ flock(LOG,LOCK_EX);
+ print LOG $$."\t".$clientname."\t".$currenthostid."\t"
+ .$status."\t".$lastlog."\t $keymode\n";
+ flock(DB,LOCK_UN);
+ close(LOG);
+ }
&status("Finished logging");
}
@@ -3710,8 +4062,7 @@ sub make_new_child {
$inittype = ""; # This forces insecure attempt.
&logthis(" Certificates not "
."installed -- trying insecure auth");
- }
- else { # SSL certificates are in place so
+ } else { # SSL certificates are in place so
} # Leave the inittype alone.
}
@@ -3834,7 +4185,7 @@ sub make_new_child {
# user - Name of the user for which the role is being put.
# authtype - The authentication type associated with the user.
#
-sub ManagePermissions
+sub manage_permissions
{
my ($request, $domain, $user, $authtype) = @_;
@@ -3847,17 +4198,89 @@ sub ManagePermissions
system("$execdir/lchtmldir $userhome $user $authtype");
}
}
+
+
+#
+# Return the full path of a user password file, whether it exists or not.
+# Parameters:
+# domain - Domain in which the password file lives.
+# user - name of the user.
+# Returns:
+# Full passwd path:
+#
+sub password_path {
+ my ($domain, $user) = @_;
+
+
+ my $path = &propath($domain, $user);
+ $path .= "/passwd";
+
+ return $path;
+}
+
+# Password Filename
+# Returns the path to a passwd file given domain and user... only if
+# it exists.
+# Parameters:
+# domain - Domain in which to search.
+# user - username.
+# Returns:
+# - If the password file exists returns its path.
+# - If the password file does not exist, returns undefined.
+#
+sub password_filename {
+ my ($domain, $user) = @_;
+
+ Debug ("PasswordFilename called: dom = $domain user = $user");
+
+ my $path = &password_path($domain, $user);
+ Debug("PasswordFilename got path: $path");
+ if(-e $path) {
+ return $path;
+ } else {
+ return undef;
+ }
+}
+
+#
+# Rewrite the contents of the user's passwd file.
+# Parameters:
+# domain - domain of the user.
+# name - User's name.
+# contents - New contents of the file.
+# Returns:
+# 0 - Failed.
+# 1 - Success.
+#
+sub rewrite_password_file {
+ my ($domain, $user, $contents) = @_;
+
+ my $file = &password_filename($domain, $user);
+ if (defined $file) {
+ my $pf = IO::File->new(">$file");
+ if($pf) {
+ print $pf "$contents\n";
+ return 1;
+ } else {
+ return 0;
+ }
+ } else {
+ return 0;
+ }
+
+}
+
#
-# GetAuthType - Determines the authorization type of a user in a domain.
+# get_auth_type - Determines the authorization type of a user in a domain.
# Returns the authorization type or nouser if there is no such user.
#
-sub GetAuthType
+sub get_auth_type
{
my ($domain, $user) = @_;
- Debug("GetAuthType( $domain, $user ) \n");
+ Debug("get_auth_type( $domain, $user ) \n");
my $proname = &propath($domain, $user);
my $passwdfile = "$proname/passwd";
if( -e $passwdfile ) {
@@ -3873,13 +4296,132 @@ sub GetAuthType
}
return "$authtype:$availinfo";
- }
- else {
+ } else {
Debug("Returning nouser");
return "nouser";
}
}
+#
+# Validate a user given their domain, name and password. This utility
+# function is used by both AuthenticateHandler and ChangePasswordHandler
+# to validate the login credentials of a user.
+# Parameters:
+# $domain - The domain being logged into (this is required due to
+# the capability for multihomed systems.
+# $user - The name of the user being validated.
+# $password - The user's propoposed password.
+#
+# Returns:
+# 1 - The domain,user,pasword triplet corresponds to a valid
+# user.
+# 0 - The domain,user,password triplet is not a valid user.
+#
+sub validate_user {
+ my ($domain, $user, $password) = @_;
+
+
+ # Why negative ~pi you may well ask? Well this function is about
+ # authentication, and therefore very important to get right.
+ # I've initialized the flag that determines whether or not I've
+ # validated correctly to a value it's not supposed to get.
+ # At the end of this function. I'll ensure that it's not still that
+ # value so we don't just wind up returning some accidental value
+ # as a result of executing an unforseen code path that
+ # did not set $validated.
+
+ my $validated = -3.14159;
+
+ # How we authenticate is determined by the type of authentication
+ # the user has been assigned. If the authentication type is
+ # "nouser", the user does not exist so we will return 0.
+
+ my $contents = &get_auth_type($domain, $user);
+ my ($howpwd, $contentpwd) = split(/:/, $contents);
+
+ my $null = pack("C",0); # Used by kerberos auth types.
+
+ if ($howpwd ne 'nouser') {
+
+ if($howpwd eq "internal") { # Encrypted is in local password file.
+ $validated = (crypt($password, $contentpwd) eq $contentpwd);
+ }
+ elsif ($howpwd eq "unix") { # User is a normal unix user.
+ $contentpwd = (getpwnam($user))[1];
+ if($contentpwd) {
+ if($contentpwd eq 'x') { # Shadow password file...
+ my $pwauth_path = "/usr/local/sbin/pwauth";
+ open PWAUTH, "|$pwauth_path" or
+ die "Cannot invoke authentication";
+ print PWAUTH "$user\n$password\n";
+ close PWAUTH;
+ $validated = ! $?;
+
+ } else { # Passwords in /etc/passwd.
+ $validated = (crypt($password,
+ $contentpwd) eq $contentpwd);
+ }
+ } else {
+ $validated = 0;
+ }
+ }
+ elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain.
+ if(! ($password =~ /$null/) ) {
+ my $k4error = &Authen::Krb4::get_pw_in_tkt($user,
+ "",
+ $contentpwd,,
+ 'krbtgt',
+ $contentpwd,
+ 1,
+ $password);
+ if(!$k4error) {
+ $validated = 1;
+ } else {
+ $validated = 0;
+ &logthis('krb4: '.$user.', '.$contentpwd.', '.
+ &Authen::Krb4::get_err_txt($Authen::Krb4::error));
+ }
+ } else {
+ $validated = 0; # Password has a match with null.
+ }
+ } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain.
+ if(!($password =~ /$null/)) { # Null password not allowed.
+ my $krbclient = &Authen::Krb5::parse_name($user.'@'
+ .$contentpwd);
+ my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd;
+ my $krbserver = &Authen::Krb5::parse_name($krbservice);
+ my $credentials= &Authen::Krb5::cc_default();
+ $credentials->initialize($krbclient);
+ my $krbreturn = &Authen::KRb5::get_in_tkt_with_password($krbclient,
+ $krbserver,
+ $password,
+ $credentials);
+ $validated = ($krbreturn == 1);
+ } else {
+ $validated = 0;
+ }
+ } elsif ($howpwd eq "localauth") {
+ # Authenticate via installation specific authentcation method:
+ $validated = &localauth::localauth($user,
+ $password,
+ $contentpwd);
+ } else { # Unrecognized auth is also bad.
+ $validated = 0;
+ }
+ } else {
+ $validated = 0;
+ }
+ #
+ # $validated has the correct stat of the authentication:
+ #
+
+ unless ($validated != -3.14159) {
+ die "ValidateUser - failed to set the value of validated";
+ }
+ return $validated;
+}
+
+
sub addline {
my ($fname,$hostid,$ip,$newline)=@_;
my $contents;
@@ -4125,7 +4667,9 @@ sub make_passwd_file {
return "no_priv_account_error\n";
}
- my $execpath="$perlvar{'lonDaemons'}/"."lcuseradd";
+ my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd";
+
+ my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status";
{
&Debug("Executing external: ".$execpath);
&Debug("user = ".$uname.", Password =". $npass);
@@ -4133,17 +4677,27 @@ sub make_passwd_file {
print $se "$uname\n";
print $se "$npass\n";
print $se "$npass\n";
+ print $se "$lc_error_file\n"; # Status -> unique file.
}
- my $useraddok = $?;
+ my $error = IO::File->new("< $lc_error_file");
+ my $useraddok = <$error>;
+ $error->close;
+ unlink($lc_error_file);
+
+ chomp $useraddok;
+
if($useraddok > 0) {
- &logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok));
+ my $error_text = &lcuseraddstrerror($useraddok);
+ &logthis("Failed lcuseradd: $error_text");
+ $result = "lcuseradd_failed:$error_text\n";
+ } else {
+ my $pf = IO::File->new(">$passfilename");
+ print $pf "unix:\n";
}
- my $pf = IO::File->new(">$passfilename");
- print $pf "unix:\n";
}
} elsif ($umode eq 'none') {
{
- my $pf = IO::File->new(">$passfilename");
+ my $pf = IO::File->new("> $passfilename");
print $pf "none:\n";
}
} else {
@@ -4472,7 +5026,7 @@ Place in B
stores hash in namespace
-=item rolesput
+=item rolesputy
put a role into a user's environment