diff options
Diffstat (limited to 'LedgerSMB')
| -rwxr-xr-x | LedgerSMB/Session/DB.pm | 98 |
1 files changed, 76 insertions, 22 deletions
diff --git a/LedgerSMB/Session/DB.pm b/LedgerSMB/Session/DB.pm index 8b1d20f0..f75be4b5 100755 --- a/LedgerSMB/Session/DB.pm +++ b/LedgerSMB/Session/DB.pm @@ -31,19 +31,32 @@ package Session; sub session_check { + use Time::HiRes qw(gettimeofday); + my ($cookie, $form) = @_; - my ($sessionid, $token) = split /:/, $cookie; + my ($sessionID, $transactionID, $token) = split /:/, $cookie; # use the central database handle my $dbh = ${LedgerSMB::Sysconfig::GLOBALDBH}; - my $checkQuery = $dbh->prepare("SELECT sl_login FROM session WHERE session_id = ? AND token = ? AND last_used > now() - ?::interval"); + my $checkQuery = $dbh->prepare("SELECT u.username, s.transaction_id + FROM session as s, users as u + WHERE s.session_id = ? + AND s.token = ? + AND s.users_id = u.id + AND s.last_used > now() - ?::interval"); - my $updateAge = $dbh->prepare("UPDATE session SET last_used = now() WHERE session_id = ?;"); + my $updateAge = $dbh->prepare("UPDATE session + SET last_used = now(), + transaction_id = ? + WHERE session_id = ?;"); #must be an integer - $sessionid =~ s/[^0-9]//g; - $sessionid = int $sessionid; + $sessionID =~ s/[^0-9]//g; + $sessionID = int $sessionID; + + $transactionID =~ s/[^0-9]//g; + $transactionID = int $transactionID; #must be 32 chars long and contain hex chars $token =~ s/[^0-9a-f]//g; @@ -55,24 +68,39 @@ sub session_check { $timeout = "$myconfig{timeout} seconds"; } - $checkQuery->execute($sessionid, $token, $timeout) + $checkQuery->execute($sessionID, $token, $timeout) || $form->dberror(__FILE__.':'.__LINE__.': Looking for session: '); my $sessionValid = $checkQuery->rows; if($sessionValid){ #user has a valid session cookie, now check the user - my ($sessionLogin) = $checkQuery->fetchrow_array; + my ($sessionLogin, $sessionTransaction) = $checkQuery->fetchrow_array; my $login = $form->{login}; - $login =~ s/[^a-zA-Z0-9@.-]//g; + $login =~ s/[^a-zA-Z0-9._+@-]//g; + + if(($sessionLogin eq $login) and ($sessionTransaction eq $transactionID)){ + + #microseconds are more than random enough for transaction_id + my ($ignore, $newTransactionID) = gettimeofday(); + + $newTransactionID = int $newTransactionID; + + $updateAge->execute($newTransactionID, $sessionID) + || $form->dberror(__FILE__.':'.__LINE__.': Updating session age: '); + + $newCookieValue = $sessionID . ':'.$newTransactionID.':' . $token; - if($sessionLogin eq $login){ - $updateAge->execute($sessionid) || $form->dberror(__FILE__.':'.__LINE__.': Updating session age: '); + #now update the cookie in the browser + print qq|Set-Cookie: LedgerSMB=$newCookieValue; path=/;\n|; return 1; } else { - #something's wrong, they have the cookie, but wrong user. Hijack attempt? + #something's wrong, they have the cookie, but wrong user or the wrong transaction id. Hijack attempt? + #destroy the session + my $sessionDestroy = $dbh->prepare(""); + #delete the cookie in the browser print qq|Set-Cookie: LedgerSMB=; path=/;\n|; return 0; @@ -87,6 +115,13 @@ sub session_check { } sub session_create { + + use Time::HiRes qw(gettimeofday); + + #microseconds are more than random enough for transaction_id + my ($ignore, $newTransactionID) = gettimeofday(); + $newTransactionID = int $newTransactionID; + my ($form) = @_; if (! $ENV{HTTP_HOST}){ @@ -98,26 +133,34 @@ sub session_create { my $dbh = ${LedgerSMB::Sysconfig::GLOBALDBH}; # TODO Change this to use %myconfig - my $deleteExisting = $dbh->prepare("DELETE FROM session WHERE sl_login = ? AND age(last_used) > ?::interval"); + my $deleteExisting = $dbh->prepare("DELETE FROM session + USING users + WHERE users.username = ? + AND users.id = session.users_id + AND age(last_used) > ?::interval"); my $seedRandom = $dbh->prepare("SELECT setseed(?);"); my $fetchSequence = $dbh->prepare("SELECT nextval('session_session_id_seq'), md5(random());"); - my $createNew = $dbh->prepare("INSERT INTO session (session_id, sl_login, token) VALUES(?, ?, ?);"); + my $createNew = $dbh->prepare("INSERT INTO session (session_id, users_id, token, transaction_id) + VALUES(?, (SELECT id + FROM users + WHERE username = ?), ?, ?);"); # this is assuming that $form->{login} is safe, which might be a bad assumption # so, I'm going to remove some chars, which might make previously valid logins invalid my $login = $form->{login}; - $login =~ s/[^a-zA-Z0-9@.-]//g; + $login =~ s/[^a-zA-Z0-9._+@'-]//g; #delete any existing stale sessions with this login if they exist if (!$myconfig{timeout}){ $myconfig{timeout} = 86400; } - $deleteExisting->execute($login, "$myconfig{timeout} seconds") || $form->dberror(__FILE__.':'.__LINE__.': Delete from session: '); + $deleteExisting->execute($login, "$myconfig{timeout} seconds") + || $form->dberror(__FILE__.':'.__LINE__.': Delete from session: '); #doing the random stuff in the db so that LedgerSMB won't #require a good random generator - maybe this should be reviewed, pgsql's isn't great either @@ -125,13 +168,16 @@ sub session_create { my ($newSessionID, $newToken) = $fetchSequence->fetchrow_array; #create a new session - $createNew->execute($newSessionID, $login, $newToken) || $form->dberror(__FILE__.':'.__LINE__.': Create new session: '); + $createNew->execute($newSessionID, $login, $newToken, $newTransactionID) + || $form->dberror(__FILE__.':'.__LINE__.': Create new session: '); #reseed the random number generator my $randomSeed = 1.0 * ('0.'. (time() ^ ($$ + ($$ <<15)))); - $seedRandom->execute($randomSeed)|| $form->dberror(__FILE__.':'.__LINE__.': Reseed random generator: '); - $newCookieValue = $newSessionID . ':' . $newToken; + $seedRandom->execute($randomSeed) + || $form->dberror(__FILE__.':'.__LINE__.': Reseed random generator: '); + + $newCookieValue = $newSessionID . ':'.$newTransactionID.':' . $newToken; #now set the cookie in the browser #TODO set domain from ENV, also set path to install path @@ -144,13 +190,18 @@ sub session_destroy { my ($form) = @_; my $login = $form->{login}; - $login =~ s/[^a-zA-Z0-9@.-]//g; + $login =~ s/[^a-zA-Z0-9._+@'-]//g; # use the central database handle my $dbh = ${LedgerSMB::Sysconfig::GLOBALDBH}; - my $deleteExisting = $dbh->prepare("DELETE FROM session WHERE sl_login = ?;"); - $deleteExisting->execute($login) || $form->dberror(__FILE__.':'.__LINE__.': Delete from session: '); + my $deleteExisting = $dbh->prepare("DELETE FROM session + USING users + WHERE users.username = ? + AND users.id = session.users_id;"); + + $deleteExisting->execute($login) + || $form->dberror(__FILE__.':'.__LINE__.': Delete from session: '); #delete the cookie in the browser print qq|Set-Cookie: LedgerSMB=; path=/;\n|; @@ -163,6 +214,8 @@ sub password_check { my ($form, $username, $password) = @_; + $username =~ s/[^a-zA-Z0-9._+@-]//g; + # use the central database handle my $dbh = ${LedgerSMB::Sysconfig::GLOBALDBH}; @@ -188,7 +241,8 @@ sub password_check { WHERE users_conf.id = users.id AND users.username = ?;"); - $updatePassword->execute($password, $username) || $form->dberror(__FILE__.':'.__LINE__.': Converting password : '); + $updatePassword->execute($password, $username) + || $form->dberror(__FILE__.':'.__LINE__.': Converting password : '); return 1; |