1 <META CONTENT="text/ssperl, CGI='$SERVER_ROOT $CGI_BINARY_FILE $REMOTE_ADDR'"><SCRIPT TYPE=text/ssperl>
2 # NOTE: no empty lines outside the script tags
4 # 030300 Added directory access blocking for removing CVS directories from downloads
6 # This program contains two tricks:
7 # 1 .gz compressed and tar.gz compressed archive files are constructed on-line
8 # when they don't exist.
9 # 2 URL: "http:/localhost:8080/<file1>*<file2>*...<fileN>.multipart" requests are treated
10 # as a single multi file 'multipart/mixed' MIME type request. That is, a single multipart
11 # document with all requested files is constructed on-line (when it doesn't exist).
12 # If only the first file contains a URL path, the others will be prefixed with it, e.g.,
13 # '/Audio/Daudio/AMDaudio/BLAMD001.WAV*BLAMD001.WAV.MULTIPART' is identical to
14 # '/Audio/Daudio/AMDaudio/BLAMD001.WAV*/Audio/Daudio/AMDaudio/BLAMD001.WAV.MULTIPART'
15 # NOTE: the view of multipart/mixed documents depends on the BROWSER used.
18 ###############################################################################
20 # Author and Copyright (c):
21 # Rob van Son, © 1999,2000
22 # Institute of Phonetic Sciences & IFOTT/ACLC
23 # University of Amsterdam
24 # Email: R.J.J.H.vanSon@uva.nl
25 # WWW : http://www.fon.hum.uva.nl/rob/
27 # License for use and disclaimers
29 # CGIscriptor merges plain ASCII HTML files transparantly
30 # with CGI variables, in-line PERL code, shell commands,
31 # and executable scripts in other scripting languages.
33 # This program is free software; you can redistribute it and/or
34 # modify it under the terms of the GNU General Public License
35 # as published by the Free Software Foundation; either version 2
36 # of the License, or (at your option) any later version.
38 # This program is distributed in the hope that it will be useful,
39 # but WITHOUT ANY WARRANTY; without even the implied warranty of
40 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 # GNU General Public License for more details.
43 # You should have received a copy of the GNU General Public License
44 # along with this program; if not, write to the Free Software
45 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
48 #######################################################>>>>>>>>>>Start Remove
50 # DIRECTORY ACCESS CONTROL: "foo|bar|thing" used as: =~ m@/($BlockAccess)/@
51 my $BlockAccess = "CVS"; # Block access to the CVS information
53 # Define mime types extension => mimetype (can be found in .mime.types file)
55 'HTML' => "text/html", # These are PROCESSED by CGIscriptor, not just written to STDOUT
56 'TXT' => "text/plain",
57 'PL' => "text/plain", # This is incorrect, of course
58 #'CGI' => "text/osshell", # Executing shell scripts should not be done
59 'JPG' => "image/jpeg",
60 'JPEG' => "image/jpeg",
62 'TIFF' => "image/tiff",
63 'TIF' => "image/tiff",
64 'AU' => "audio/basic",
65 'AIF' => "audio/aiff",
66 'AIFC' => "audio/aiff",
67 'AIFF' => "audio/aiff",
69 'MPGA' => "audio/mpeg",
70 'MP2' => "audio/mpeg",
71 'MPEG' => "video/mpeg",
72 'MPG' => "video/mpeg",
73 'MPE' => "video/mpeg",
74 'MULTIPART' => "multipart/mixed;boundary=NxtCntntTpZdFjgHk".time, # use a '*' separated list
75 'QT' => "video/quicktime",
76 'MOV' => "video/quicktime",
77 'GZ' => "application/gzip" # Constructs .gz and .tar.gz files on-line/run-time
80 $CGI_BINARY_FILE =~ /\.([\w]+)$/; # Get extension
81 my $extension = uc($1);
82 unless(exists($mimeType{$extension})) # actually illegal mime
86 my $mime = $mimeType{$extension};
91 # Print the content type
92 $String = "Content-type: $mime\n\n";
93 $number_of_bytes = length($String);
94 # Actually print the document header
95 # (but NOT for OSSHELL scripts, which supply their own headers)
96 syswrite(STDOUT, $String, $number_of_bytes) unless $mime eq "text/osshell";
98 # THIS LINE PREVENTS ACCESS TO SPECIFIC PARTS OF THE DIRECTORY TREE
99 exit if $CGI_BINARY_FILE =~ m@/($BlockAccess)/@; # Prevent access to specific subtrees
101 # First, construct tar.gz and .gz files on-line
102 if($mime eq "application/gzip" && ! -e "$SERVER_ROOT$CGI_BINARY_FILE")
104 # This is a gimmick to construct gnu-zipped tar-files from every requested directory at
105 # run-time This could be a security weakness and a CPU hog, so be carefull
106 if($CGI_BINARY_FILE =~ m@\.tar\.gz$@is)
108 $SERVER_ROOT =~ m@/[^/]+$@; # Get last directory name
109 my $HomeDirectory = $&; # The name of the current SERVER_ROOT dir
110 my $PrePath = $`; # The path tho the parent of the server root
111 # THIS LINE PREVENTs SECURITY BREAKS: INSIST ON FULL PATHS STARTING AT SERVER-ROOT
112 exit unless $CGI_BINARY_FILE =~ m@^$HomeDirectory@; # Prevent tricks
114 $CGI_BINARY_FILE =~ m@\.tar\.gz$@is; # Remove extensions (e.g., .tar.gz)
115 my $TarPath = $PrePath.$`; # The path to the directory to be TARRED
116 die "Illegal tar request from $REMOTE_ADDR: $TarPath\n" unless -d $TarPath; # Only directories allowed
118 # Use a pipe to prevent memory overloads (I hope).
119 # Note: the tar start at the PARENT directory of the directory to be
120 # tarred. The tar excludes symbolic links and .log files.
122 "cd $PrePath;find $TarPath ! -type l ! -type d -print"
123 ."|grep -v '.log'|egrep -v '/$BlockAccess/'"
124 ."|sed 's\@$PrePath\@.\@g'|tar -cf - -T -|gzip|") # Linux tar
126 "cd $PrePath;find $TarPath ! -type l ! -type d -print"
127 ."|grep -v '.log'|egrep -v '/$BlockAccess/'"
128 ."|sed 's\@$PrePath\@.\@g'|tar -cf - -|gzip|") # SGI Irix tar
130 # If you want to tar WHOLE directories unconditionally, uncomment the
131 # following (and remove the above)
132 # open(BINARY, "cd $PrePath;tar -cf - .$HomeDirectory|gzip|");
134 # read and write block of 1024 bytes
135 while($number_of_bytes = sysread(BINARY, $String, 1024))
137 syswrite(STDOUT, $String, $number_of_bytes); # Actually print the file content
141 # This will construct a gnu-zipped file from every file requested: GET foo.bar.gz will
142 # result in foo.bar being zipped before delivery.
145 $CGI_BINARY_FILE =~ m@\.gz$@is; # Remove extensions (e.g., .tar.gz)
146 my $GzipPath = $SERVER_ROOT.$`; # The path to the file to be zipped
148 # Limit gzip activity to supported file-types
149 $GzipPath =~ /\.([\w]+)$/; # Get extension
150 my $GzipExtension = uc($1);
151 my $GzipMime = $mimeType{$GzipExtension}; # mime of file to be zipped
152 die "Illegal tar request from $REMOTE_ADDR: $GzipPath\n" unless $GzipMime && ($GzipMime ne $mime);
154 # Use a pipe to prevent memory overloads (I hope)
155 open(BINARY, "gzip -c $GzipPath|");
156 # read and write block of 1024 bytes
157 while($number_of_bytes = sysread(BINARY, $String, 1024))
159 syswrite(STDOUT, $String, $number_of_bytes); # Actually print the file content
164 # Second, trick to handle 'multipart/mixed', ie, combined pages, on-line.
165 # This allows the playback of a sound file coupled to the display of an
167 elsif($mime =~ m@^multipart/mixed@isg && ! -e "$SERVER_ROOT$CGI_BINARY_FILE")
169 $CGI_BINARY_FILE =~ m@[^/]+$@;
171 my $BinaryFileList = $&;
172 if($URLpath =~ /\*/) # If each file has separate path, do not use common URLpath
174 $BinaryFileList = $CGI_BINARY_FILE;
178 $BinaryFileList =~ s/\.$extension$//isg; # Remove Multipart extension
179 my @FileList = split('\*', $BinaryFileList);
181 $mime =~ /\;boundary\=/;
182 my $MultipartSeparator = $';
183 foreach $InputFile (@FileList)
186 # Write separation string
187 my $String = "\n--$MultipartSeparator\n";
188 my $number_of_bytes = length($String);
189 syswrite(STDOUT, $String, $number_of_bytes); # Actually print the separation string
191 # Recursively process file parts
192 $CGI_BINARY_FILE = $URLpath.$InputFile;
193 $ENV{'CGI_BINARY_FILE'} = $URLpath.$InputFile;
194 main::ProcessFile("~/BinaryMapFile.xmr");
196 # Write closing separation string
197 my $String = "\n--$MultipartSeparator\n";
198 my $number_of_bytes = length($String);
199 syswrite(STDOUT, $String, $number_of_bytes); # Actually print the separation string
202 # Third, process HTML files as CGIscriptor HTML files (when they are part of MULTIPART/MIXED files)
203 elsif($mime eq 'text/html')
205 main::ProcessFile("~/$CGI_BINARY_FILE");
207 # If you realy cannot live without shell scripts (note the ./)
208 # Note that the script must supply the content type!
209 elsif($mime eq 'text/osshell')
211 # Check filename for safety
212 die "./".$CGI_BINARY_FILE." from $REMOTE_ADDR\n"
213 unless CGIscriptor::CGIsafeFileName($CGI_BINARY_FILE);
214 # This doesn't "feel" safe, but it works
215 print STDOUT `./$CGI_BINARY_FILE`;
217 else # All other files are just printed
219 open(BINARY, "<$SERVER_ROOT$CGI_BINARY_FILE") || die "$SERVER_ROOT$CGI_BINARY_FILE: $!";
221 # read and write block of 1024 bytes
222 while($number_of_bytes = sysread(BINARY, $String, 1024))
224 syswrite(STDOUT, $String, $number_of_bytes); # Actually print the file content