зеркало из https://github.com/mozilla/gecko-dev.git
Landing Myk's patch for bug #71767
This commit is contained in:
tara%tequilarista.org
Родитель
6474b670b4
Коммит
eda44f5b9f
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@ -227,52 +227,70 @@ sub CheckFormFieldDefined (\%$) {
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}
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sub ValidateBugID {
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# Validates and verifies a bug ID, making sure the number is a
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# positive integer, that it represents an existing bug in the
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# database, and that the user is authorized to access that bug.
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# Validates and verifies a bug ID, making sure the number is a
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# positive integer, that it represents an existing bug in the
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# database, and that the user is authorized to access that bug.
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my ($id) = @_;
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my ($id) = @_;
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# Make sure the bug number is a positive integer.
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$id =~ /^([1-9][0-9]*)$/
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|| DisplayError("The bug number is invalid.")
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&& exit;
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# Make sure the bug number is a positive integer.
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$id =~ /^([1-9][0-9]*)$/
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|| DisplayError("The bug number is invalid.")
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&& exit;
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# Make sure the usergroupset variable is set. This variable stores
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# the set of groups the user is a member of. This variable should
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# be set by either confirm_login or quietly_check_login, but we set
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# it here just in case one of those functions has not been run yet.
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$::usergroupset ||= 0;
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# Get the values of the usergroupset and userid global variables
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# and write them to local variables for use within this function,
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# setting those local variables to the default value of zero if
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# the global variables are undefined.
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# Query the database for the bug, retrieving a boolean value that
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# represents whether or not the user is authorized to access the bug.
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# "usergroupset" stores the set of groups the user is a member of,
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# while "userid" stores the user's unique ID. These variables are
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# set globally by either confirm_login() or quietly_check_login(),
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# one of which should be run before calling this function; otherwise
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# this function will treat the user as if they were not logged in
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# and throw an error if they try to access a bug that requires
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# permissions/authorization to access.
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my $usergroupset = $::usergroupset || 0;
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my $userid = $::userid || 0;
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# Users are authorized to access bugs if they are a member of all
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# groups to which the bug is restricted. User group membership and
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# bug restrictions are stored as bits within bitsets, so authorization
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# can be determined by comparing the intersection of the user's
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# bitset with the bug's bitset. If the result matches the bug's bitset
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# the user is a member of all groups to which the bug is restricted
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# and is authorized to access the bug.
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# Bit arithmetic is performed by MySQL instead of Perl because bitset
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# fields in the database are 64 bits wide (BIGINT), and Perl installations
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# may or may not support integers larger than 32 bits. Using bitsets
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# and doing bitset arithmetic is probably not cross-database compatible,
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# however, so these mechanisms are likely to change in the future.
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SendSQL("SELECT ((groupset & $::usergroupset) = groupset)
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FROM bugs WHERE bug_id = $id");
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# Make sure the bug exists in the database.
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MoreSQLData()
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|| DisplayError("Bug #$id does not exist.")
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&& exit;
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# Query the database for the bug, retrieving a boolean value that
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# represents whether or not the user is authorized to access the bug.
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# Make sure the user is authorized to access the bug.
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my ($isauthorized) = FetchSQLData();
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$isauthorized
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|| DisplayError("You are not authorized to access bug #$id.")
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&& exit;
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# Users are authorized to access bugs if they are a member of all
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# groups to which the bug is restricted. User group membership and
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# bug restrictions are stored as bits within bitsets, so authorization
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# can be determined by comparing the intersection of the user's
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# bitset with the bug's bitset. If the result matches the bug's bitset
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# the user is a member of all groups to which the bug is restricted
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# and is authorized to access the bug.
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# Bit arithmetic is performed by MySQL instead of Perl because bitset
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# fields in the database are 64 bits wide (BIGINT), and Perl installations
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# may or may not support integers larger than 32 bits. Using bitsets
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# and doing bitset arithmetic is probably not cross-database compatible,
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# however, so these mechanisms are likely to change in the future.
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SendSQL("SELECT ((groupset & $usergroupset) = groupset)
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FROM bugs WHERE bug_id = $id");
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# Make sure the bug exists in the database.
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MoreSQLData()
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|| DisplayError("Bug #$id does not exist.")
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&& exit;
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# Make sure the user is authorized to access the bug.
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my ($isauthorized) = FetchSQLData();
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$isauthorized
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|| (
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$userid ?
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DisplayError("You are not authorized to access bug #$id.") :
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DisplayError(
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qq|You are not authorized to access bug #$id.
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To see this bug, you must first
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<a href="show_bug.cgi?id=$id&GoAheadAndLogIn=1">log in</a>
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to an account with the appropriate permissions.|
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)
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)
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&& exit;
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}
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# check and see if a given string actually represents a positive
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@ -58,19 +58,33 @@ my $requiremilestone = 0;
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# named "id_x" where "x" is the bug number.
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my @idlist;
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if (defined $::FORM{'id'}) {
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push @idlist, $::FORM{'id'};
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push @idlist, $::FORM{'id'};
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} else {
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foreach my $i (keys %::FORM) {
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if ($i =~ /^id_([1-9][0-9]*)/) {
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push @idlist, $1;
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foreach my $i (keys %::FORM) {
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if ($i =~ /^id_([1-9][0-9]*)/) {
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push @idlist, $1;
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}
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}
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}
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}
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# For each bug being modified, make sure its ID is a valid bug number
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# representing an existing bug that the user is authorized to access.
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foreach my $id (@idlist) {
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ValidateBugID($id);
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ValidateBugID($id);
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}
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# If the user has a bug list and is processing one bug, then after
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# we process the bug we are going to show them the next bug on their
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# list. Thus we have to make sure this bug ID is also valid,
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# since a malicious cracker might alter their cookies for the purpose
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# gaining access to bugs they are not authorized to access.
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if ( $::COOKIE{"BUGLIST"} ne "" && defined $::FORM{'id'} ) {
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my @buglist = split( /:/ , $::COOKIE{"BUGLIST"} );
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my $idx = lsearch( \@buglist , $::FORM{"id"} );
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if ($idx < $#buglist) {
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my $nextbugid = $buglist[$idx + 1];
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ValidateBugID($nextbugid);
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}
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}
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######################################################################
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@ -29,12 +29,28 @@ ConnectToDatabase();
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if ($::FORM{'GoAheadAndLogIn'}) {
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confirm_login();
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} else {
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quietly_check_login();
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}
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######################################################################
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# Begin Data/Security Validation
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######################################################################
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# Make sure the bug ID is a positive integer representing an existing
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# bug that the user is authorized to access.
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if (defined ($::FORM{'id'})) {
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ValidateBugID($::FORM{'id'});
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}
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######################################################################
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# End Data/Security Validation
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######################################################################
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print "Content-type: text/html\n";
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print "\n";
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if (!defined $::FORM{'id'} || $::FORM{'id'} !~ /^\s*\d+\s*$/) {
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if (!defined $::FORM{'id'}) {
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PutHeader("Search by bug number");
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print "<FORM METHOD=GET ACTION=\"show_bug.cgi\">\n";
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print "You may find a single bug by entering its bug id here: \n";
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@ -47,14 +63,13 @@ if (!defined $::FORM{'id'} || $::FORM{'id'} !~ /^\s*\d+\s*$/) {
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GetVersionTable();
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SendSQL("select short_desc, groupset from bugs where bug_id = $::FORM{'id'}");
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my ($summary, $groupset) = FetchSQLData();
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if( $summary && $groupset == 0) {
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$summary = html_quote($summary);
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PutHeader("Bug $::FORM{'id'} - $summary", "Bugzilla Bug $::FORM{'id'}", $summary );
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}else {
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PutHeader("Bugzilla bug $::FORM{'id'}", "Bugzilla Bug", $::FORM{'id'});
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}
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# Get the bug's summary (short description) and display it as
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# the page title.
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SendSQL("SELECT short_desc FROM bugs WHERE bug_id = $::FORM{'id'}");
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my ($summary) = FetchSQLData();
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$summary = html_quote($summary);
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PutHeader("Bug $::FORM{'id'} - $summary", "Bugzilla Bug $::FORM{'id'}", $summary );
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navigation_header();
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print "<HR>\n";
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