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revision 1.45, Mon May 8 20:37:02 2006 UTC revision 1.53, Sun Jun 18 05:13:54 2006 UTC
# Line 24  Line 24 
24      use strict;      use strict;
25      use Carp qw(longmess croak);      use Carp qw(longmess croak);
26      use CGI;      use CGI;
27        use Cwd;
28      use FIG_Config;      use FIG_Config;
29      use PageBuilder;      use PageBuilder;
30      use Digest::MD5;      use Digest::MD5;
31      use File::Basename;      use File::Basename;
32      use File::Path;      use File::Path;
33        use File::stat;
34    
35  =head1 Tracing and Debugging Helpers  =head1 Tracing and Debugging Helpers
36    
# Line 1604  Line 1606 
1606    
1607  =head3 AddToListMap  =head3 AddToListMap
1608    
1609  C<< Tracer::AddToListMap(\%hash, $key, $value); >>  C<< Tracer::AddToListMap(\%hash, $key, $value1, $value2, ... valueN); >>
1610    
1611  Add a key-value pair to a hash of lists. If no value exists for the key, a singleton list  Add a key-value pair to a hash of lists. If no value exists for the key, a singleton list
1612  is created for the key. Otherwise, the new value is pushed onto the list.  is created for the key. Otherwise, the new value is pushed onto the list.
# Line 1619  Line 1621 
1621    
1622  Key for which the value is to be added.  Key for which the value is to be added.
1623    
1624  =item value  =item value1, value2, ... valueN
1625    
1626  Value to add to the key's value list.  List of values to add to the key's value list.
1627    
1628  =back  =back
1629    
# Line 1629  Line 1631 
1631    
1632  sub AddToListMap {  sub AddToListMap {
1633      # Get the parameters.      # Get the parameters.
1634      my ($hash, $key, $value) = @_;      my ($hash, $key, @values) = @_;
1635      # Process according to whether or not the key already has a value.      # Process according to whether or not the key already has a value.
1636      if (! exists $hash->{$key}) {      if (! exists $hash->{$key}) {
1637          $hash->{$key} = [$value];          $hash->{$key} = [@values];
1638      } else {      } else {
1639          push @{$hash->{$key}}, $value;          push @{$hash->{$key}}, @values;
1640      }      }
1641  }  }
1642    
# Line 2008  Line 2010 
2010      }      }
2011  }  }
2012    
2013    =head3 SetPermissions
2014    
2015    C<< Tracer::SetPermissions($dirName, $group, $mask, %otherMasks); >>
2016    
2017    Set the permissions for a directory and all the files and folders inside it.
2018    In addition, the group ownership will be changed to the specified value.
2019    
2020    This method is more vulnerable than most to permission and compatability
2021    problems, so it does internal error recovery.
2022    
2023    =over 4
2024    
2025    =item dirName
2026    
2027    Name of the directory to process.
2028    
2029    =item group
2030    
2031    Name of the group to be assigned.
2032    
2033    =item mask
2034    
2035    Permission mask. Bits that are C<1> in this mask will be ORed into the
2036    permission bits of any file or directory that does not already have them
2037    set to 1.
2038    
2039    =item otherMasks
2040    
2041    Map of search patterns to permission masks. If a directory name matches
2042    one of the patterns, that directory and all its members and subdirectories
2043    will be assigned the new pattern. For example, the following would
2044    assign 01664 to most files, but would use 01777 for directories named C<tmp>.
2045    
2046        Tracer::SetPermissions($dirName, 'fig', 01664, '^tmp$' => 01777);
2047    
2048    The list is ordered, so the following would use 0777 for C<tmp1> and
2049    0666 for C<tmp>, C<tmp2>, or C<tmp3>.
2050    
2051        Tracer::SetPermissions($dirName, 'fig', 01664, '^tmp1' => 0777,
2052                                                       '^tmp' => 0666);
2053    
2054    Note that the pattern matches are all case-insensitive, and only directory
2055    names are matched, not file names.
2056    
2057    =back
2058    
2059    =cut
2060    
2061    sub SetPermissions {
2062        # Get the parameters.
2063        my ($dirName, $group, $mask, @otherMasks) = @_;
2064        # Set up for error recovery.
2065        eval {
2066            # Switch to the specified directory.
2067            ChDir($dirName);
2068            # Get the group ID.
2069            my $gid = getgrnam($group);
2070            # Get the mask for tracing.
2071            my $traceMask = sprintf("%04o", $mask) . "($mask)";
2072            Trace("Fixing permissions for directory $dirName using group $group($gid) and mask $traceMask.") if T(2);
2073            my $fixCount = 0;
2074            my $lookCount = 0;
2075            # @dirs will be a stack of directories to be processed.
2076            my @dirs = (getcwd());
2077            while (scalar(@dirs) > 0) {
2078                # Get the current directory.
2079                my $dir = pop @dirs;
2080                # Check for a match to one of the specified directory names. To do
2081                # that, we need to pull the individual part of the name off of the
2082                # whole path.
2083                my $simpleName = $dir;
2084                if ($dir =~ m!/(.+)$!) {
2085                    $simpleName = $1;
2086                }
2087                # Search for a match.
2088                my $match = 0;
2089                my $i;
2090                for ($i = 0; $i < $#otherMasks && ! $match; $i += 2) {
2091                    my $pattern = $otherMasks[$i];
2092                    if ($simpleName =~ /$pattern/i) {
2093                        $match = 1;
2094                    }
2095                }
2096                # Check for a match. Note we use $i-1 because the loop added 2
2097                # before terminating due to the match.
2098                if ($match && $otherMasks[$i-1] != $mask) {
2099                    # This directory matches one of the incoming patterns, and it's
2100                    # a different mask, so we process it recursively with that mask.
2101                    SetPermissions($dir, $group, $otherMasks[$i-1], @otherMasks);
2102                } else {
2103                    # Here we can process normally. Get all of the non-hidden members.
2104                    my @submems = OpenDir($dir, 1);
2105                    for my $submem (@submems) {
2106                        # Get the full name.
2107                        my $thisMem = "$dir/$submem";
2108                        Trace("Checking member $thisMem.") if T(4);
2109                        $lookCount++;
2110                        if ($lookCount % 1000 == 0) {
2111                            Trace("$lookCount members examined. Current is $thisMem. Mask is $traceMask") if T(3);
2112                        }
2113                        # Fix the group.
2114                        chown -1, $gid, $thisMem;
2115                        # Insure this member is not a symlink.
2116                        if (! -l $thisMem) {
2117                            # Get its info.
2118                            my $fileInfo = stat $thisMem;
2119                            # Only proceed if we got the info. Otherwise, it's a hard link
2120                            # and we want to skip it anyway.
2121                            if ($fileInfo) {
2122                                my $fileMode = $fileInfo->mode;
2123                                if (($fileMode & $mask) == 0) {
2124                                    # Fix this member.
2125                                    $fileMode |= $mask;
2126                                    chmod $fileMode, $thisMem;
2127                                    $fixCount++;
2128                                }
2129                                # If it's a subdirectory, stack it.
2130                                if (-d $thisMem) {
2131                                    push @dirs, $thisMem;
2132                                }
2133                            }
2134                        }
2135                    }
2136                }
2137            }
2138            Trace("$lookCount files and directories processed, $fixCount fixed.") if T(2);
2139        };
2140        # Check for an error.
2141        if ($@) {
2142            Confess("SetPermissions error: $@");
2143        }
2144    }
2145    
2146  1;  1;

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