503 lines
14 KiB
Perl
Executable file
503 lines
14 KiB
Perl
Executable file
#!/usr/bin/perl -s
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#
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# cvsweb - a CGI interface to the CVS tree.
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#
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# Written by Bill Fenner <fenner@parc.xerox.com> on his own time.
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# Insert BSD copyright here.
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#
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#HTTP_USER_AGENT: Mozilla/1.1N (X11; I; SunOS 4.1.3_U1 sun4m) via proxy gateway CERN-HTTPD/3.0 libwww/2.17
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#SERVER_NAME: www.freebsd.org
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#QUERY_STRING: baz
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#SCRIPT_FILENAME: /usr/local/www/cgi-bin/env.pl
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#SERVER_PORT: 80
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#HTTP_ACCEPT: */*, image/gif, image/x-xbitmap, image/jpeg
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#SERVER_PROTOCOL: HTTP/1.0
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#HTTP_COOKIE: s=beta26429821397802167
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#PATH_INFO: /foo/bar
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#REMOTE_ADDR: 13.1.64.94
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#DOCUMENT_ROOT: /usr/local/www/data/
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#PATH: /sbin:/bin:/usr/sbin:/usr/bin
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#PATH_TRANSLATED: /usr/local/www/data//foo/bar
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#GATEWAY_INTERFACE: CGI/1.1
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#REQUEST_METHOD: GET
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#SCRIPT_NAME: /cgi-bin/env.pl
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#SERVER_SOFTWARE: Apache/1.0.0
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#REMOTE_HOST: beta.xerox.com
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#SERVER_ADMIN: webmaster@freebsd.org
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#
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require 'timelocal.pl';
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require 'ctime.pl';
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$hsty_base = "";
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require 'cgi-style.pl';
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$cvsroot = '/home/ncvs';
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$intro = "
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This is a WWW interface to the FreeBSD CVS tree.
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You can browse the file hierarchy by picking directories
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(which have slashes after them, e.g. <b>src/</b>).
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If you pick a file, you will see the revision history
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for that file.
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Selecting a revision number will download that revision of
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the file. There is a link at each revision to display
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diffs between that revision and the previous one, and
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a form at the bottom of the page that allows you to
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display diffs between arbitrary revisions.
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<p>
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Please send any suggestions, comments, etc. to
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<A HREF=\"mailto:fenner@freebsd.org\">Bill Fenner <fenner@freebsd.org></A>
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";
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$shortinstr = "
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Click on a directory to enter that directory. Click on a file to display
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its revision history and to get a
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chance to display diffs between revisions.
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";
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$verbose = $v;
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($where = $ENV{'PATH_INFO'}) =~ s|^/||;
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$where =~ s|/$||;
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$fullname = $cvsroot . '/' . $where;
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($scriptname = $ENV{'SCRIPT_NAME'}) =~ s|^/?|/|;
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$scriptname =~ s|/$||;
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$scriptwhere = $scriptname . '/' . $where;
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$scriptwhere =~ s|/$||;
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if (!-d $cvsroot) {
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&fatal("500 Internal Error",'$CVSROOT not found!');
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}
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if (-d $fullname) {
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# Something that would be nice to support, although I have no real
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# good idea of how, would be to get full directory diff's, using
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# symbolic names (revision numbers would be meaningless).
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# The problem is finding a list of symbolic names that is common
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# to all the files in the directory.
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#
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opendir(DIR, $fullname) || &fatal("404 Not Found","$where: $!");
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@dir = readdir(DIR);
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closedir(DIR);
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if ($where eq '') {
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print &html_header("FreeBSD CVS Repository");
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print $intro;
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} else {
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print &html_header("/$where");
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print $shortinstr;
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}
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print "<p>Current directory: <b>/$where</b>\n";
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print "<P><HR NOSHADE>\n";
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# Using <MENU> in this manner violates the HTML2.0 spec but
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# provides the results that I want in most browsers. Another
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# case of layout spooging up HTML.
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print "<MENU>\n";
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foreach (sort @dir) {
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if ($_ eq '.') {
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next;
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}
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if ($_ eq '..') {
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next if ($where eq '');
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($updir = $scriptwhere) =~ s|[^/]+$||;
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print "<IMG SRC=\"/icons/back.gif\"> ",
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&link("Previous Directory",$updir), "<BR>";
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} elsif (-d $fullname . "/" . $_) {
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print "<IMG SRC=\"/icons/dir.gif\"> ",
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&link($_ . "/", $scriptwhere . '/' . $_ . '/'), "<BR>";
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} elsif (s/,v$//) {
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print "<IMG SRC=\"/icons/text.gif\"> ",
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&link($_, $scriptwhere . '/' . $_), "<BR>";
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}
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}
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print "</MENU>\n";
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print &html_footer;
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print "</BODY></HTML>\n";
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} elsif (-f $fullname . ',v') {
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if ($_ = $ENV{'QUERY_STRING'}) {
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s/%(..)/sprintf("%c", hex($1))/ge; # unquote %-quoted
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if (/rev=([\d\.]+)/) {
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$rev = $1;
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open(RCS, "co -p$rev '$fullname' 2>&1 |") ||
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&fail("500 Internal Error", "Couldn't co: $!");
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# /home/ncvs/src/sys/netinet/igmp.c,v --> standard output
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# revision 1.1.1.2
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# /*
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$_ = <RCS>;
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if (/^$fullname,v\s+-->\s+standard output\s*$/o) {
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# As expected
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} else {
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&fatal("500 Internal Error",
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"Unexpected output from co: $_");
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}
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$_ = <RCS>;
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if (/^revision\s+$rev\s*$/) {
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# As expected
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} else {
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&fatal("500 Internal Error",
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"Unexpected output from co: $_");
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}
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$| = 1;
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print "Content-type: text/plain\n";
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print "Content-encoding: x-gzip\n\n";
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open(GZIP, "|gzip -1 -c"); # need lightweight compression
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print GZIP <RCS>;
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close(GZIP);
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close(RCS);
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exit;
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}
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if (/r1=([^&:]+)(:([^&]+))?/) {
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$rev1 = $1;
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$sym1 = $3;
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}
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if ($rev1 eq 'text') {
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if (/tr1=([^&]+)/) {
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$rev1 = $1;
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}
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}
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if (/r2=([^&:]+)(:([^&]+))?/) {
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$rev2 = $1;
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$sym2 = $3;
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}
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if ($rev2 eq 'text') {
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if (/tr2=([^&]+)/) {
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$rev2 = $1;
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}
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}
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if (!($rev1 =~ /^[\d\.]+$/) || !($rev2 =~ /^[\d\.]+$/)) {
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&fatal("404 Not Found",
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"Malformed query \"$ENV{'QUERY_STRING'}\"");
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}
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#
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# rev1 and rev2 are now both numeric revisions.
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# Thus we do a DWIM here and swap them if rev1 is after rev2.
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# XXX should we warn about the fact that we do this?
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if (&revcmp($rev1,$rev2) > 0) {
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($tmp1, $tmp2) = ($rev1, $sym1);
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($rev1, $sym1) = ($rev2, $sym2);
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($rev2, $sym2) = ($tmp1, $tmp2);
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}
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#
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$difftype = "-u";
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$diffname = "Unidiff";
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if (/f=([^&]+)/) {
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if ($1 eq 'c') {
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$difftype = '-c';
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$diffname = "Context diff";
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}
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}
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# XXX should this just be text/plain
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# or should it have an HTML header and then a <pre>
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print "Content-type: text/plain\n\n";
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open(RCSDIFF, "rcsdiff $difftype -r$rev1 -r$rev2 '$fullname' 2>&1 |") ||
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&fail("500 Internal Error", "Couldn't rcsdiff: $!");
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#
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#===================================================================
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#RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
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#retrieving revision 1.16
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#retrieving revision 1.17
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#diff -c -r1.16 -r1.17
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#*** /home/ncvs/src/sys/netinet/tcp_output.c 1995/11/03 22:08:08 1.16
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#--- /home/ncvs/src/sys/netinet/tcp_output.c 1995/12/05 17:46:35 1.17
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#
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# Ideas:
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# - nuke the stderr output if it's what we expect it to be
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# - Add "no differences found" if the diff command supplied no output.
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#
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#*** src/sys/netinet/tcp_output.c 1995/11/03 22:08:08 1.16
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#--- src/sys/netinet/tcp_output.c 1995/12/05 17:46:35 1.17 RELENG_2_1_0
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# (bogus example, but...)
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#
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if ($difftype eq '-u') {
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$f1 = '---';
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$f2 = '\+\+\+';
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} else {
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$f1 = '\*\*\*';
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$f2 = '---';
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}
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while (<RCSDIFF>) {
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if (m|^$f1 $cvsroot|o) {
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s|$cvsroot/||o;
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if ($sym1) {
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chop;
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$_ .= " " . $sym1 . "\n";
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}
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} elsif (m|^$f2 $cvsroot|o) {
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s|$cvsroot/||o;
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if ($sym2) {
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chop;
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$_ .= " " . $sym2 . "\n";
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}
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}
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print $_;
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}
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close(RCSDIFF);
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exit;
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}
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open(RCS, "rlog '$fullname'|") || &fatal("500 Internal Error",
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"Failed to spawn rlog");
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while (<RCS>) {
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print if ($verbose);
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if ($symnames) {
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if (/^\s+([^:]+):\s+([\d\.]+)/) {
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$symrev{$1} = $2;
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if ($revsym{$2}) {
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$revsym{$2} .= ", ";
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}
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$revsym{$2} .= $1;
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} else {
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$symnames = 0;
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}
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} elsif (/^symbolic names/) {
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$symnames = 1;
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} elsif (/^-----/) {
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last;
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}
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}
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# each log entry is of the form:
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# ----------------------------
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# revision 3.7.1.1
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# date: 1995/11/29 22:15:52; author: fenner; state: Exp; lines: +5 -3
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# log info
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# ----------------------------
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logentry:
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while (!/^=========/) {
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$_ = <RCS>;
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print "R:", $_ if ($verbose);
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if (/^revision ([\d\.]+)/) {
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$rev = $1;
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} elsif (/^========/ || /^----------------------------$/) {
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next logentry;
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} else {
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&fatal("500 Internal Error","Error parsing RCS output: $_");
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}
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$_ = <RCS>;
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print "D:", $_ if ($verbose);
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if (m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);|) {
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$yr = $1;
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# damn 2-digit year routines
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if ($yr > 100) {
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$yr -= 1900;
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}
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$date{$rev} = &timelocal($6,$5,$4,$3,$2 - 1,$yr);
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$author{$rev} = $7;
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} else {
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&fatal("500 Internal Error", "Error parsing RCS output: $_");
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}
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line:
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while (<RCS>) {
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print "L:", $_ if ($verbose);
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next line if (/^branches:\s/);
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last line if (/^----------------------------$/ || /^=========/);
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$log{$rev} .= $_;
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}
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print "E:", $_ if ($verbose);
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}
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close(RCS);
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print "Done reading RCS file\n" if ($verbose);
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#
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# Sort the revisions into commit-date order.
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@revorder = sort {$date{$b} <=> $date{$a}} keys %date;
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print "Done sorting revisions\n" if ($verbose);
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#
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# HEAD is an artificial tag which is simply the highest tag number on the main
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# branch (I think!). Find it by looking through @revorder; it should at least
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# be near the beginning (In fact, it *should* be the first commit listed on
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# the main branch.)
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revision:
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for ($i = 0; $i <= $#revorder; $i++) {
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if ($revorder[$i] =~ /^\d+\.\d+$/) {
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if ($revsym{$revorder[$i]}) {
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$revsym{$revorder[$i]} .= ", ";
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}
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$revsym{$revorder[$i]} .= "HEAD";
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$symrev{"HEAD"} = $revorder[$i];
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last revision;
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}
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}
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print "Done finding HEAD\n" if ($verbose);
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#
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# Now that we know all of the revision numbers, we can associate
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# absolute revision numbers with all of the symbolic names, and
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# pass them to the form so that the same association doesn't have
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# to be built then.
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#
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# should make this a case-insensitive sort
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foreach (sort keys %symrev) {
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$rev = $symrev{$_};
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if ($rev =~ /^(\d+(\.\d+)+)\.0\.(\d+)$/) {
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#
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# A revision number of A.B.0.D really translates into
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# "the highest current revision on branch A.B.D".
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#
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# If there is no branch A.B.D, then it translates into
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# the head A.B .
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#
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# This is pure speculation.
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#
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$head = $1;
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$branch = $3;
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$regex = $head . "." . $branch;
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$regex =~ s/\./\./g;
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# <
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# \____/
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$rev = $head;
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revision:
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foreach $r (@revorder) {
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if ($r =~ /^${regex}/) {
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$rev = $head . "." . $branch;
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last revision;
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}
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}
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$revsym{$rev} .= ", " if ($revsym{$rev});
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$revsym{$rev} .= $_;
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}
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$sel .= "<OPTION VALUE=\"${rev}:${_}\">$_\n";
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}
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print "Done associating revisions with branches\n" if ($verbose);
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print &html_header("CVS log for $where");
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($upwhere = $where) =~ s|[^/]+$||;
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print "Up to ", &link($upwhere,$scriptname . "/" . $upwhere);
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print "<BR>\n";
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print "<A HREF=\"#diff\">Request diff between arbitrary revisions</A>\n";
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print "<HR NOSHADE>\n";
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# The other possible U.I. I can see is to have each revision be hot
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# and have the first one you click do ?r1=foo
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# and since there's no r2 it keeps going & the next one you click
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# adds ?r2=foo and performs the query.
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# I suppose there's no reason we can't try both and see which one
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# people prefer...
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for ($i = 0; $i <= $#revorder; $i++) {
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$_ = $revorder[$i];
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# print "RCS revision <b>$_</b>\n";
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print "<A HREF=\"$scriptwhere?rev=$_\"><b>$_</b></A>";
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if (/^1\.1\.1\.\d+$/) {
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print " <i>(vendor branch)</i>";
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}
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# print "<BR>\n";
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# print "Checked in on <i>" . &ctime($date{$_}) . "</i> by ";
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# print "<i>" . $author{$_} . "</i><BR>\n";
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print " <i>" . &ctime($date{$_}) . "</i> by ";
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print "<i>" . $author{$_} . "</i>\n";
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if ($revsym{$_}) {
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# print "CVS Tags: <b>$revsym{$_}</b><BR>\n";
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print "<BR>CVS Tags: <b>$revsym{$_}</b>";
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}
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if (($br = $_) =~ s/\.\d+$// && $revsym{$br}) {
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# print "Branch: <b>$revsym{$br}</b><BR>\n";
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if ($revsym{$_}) {
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print "; ";
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} else {
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print "<BR>";
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}
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print "Branch: <b>$revsym{$br}</b>";
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}
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# Find the previous revision on this branch.
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# I think this can be done algorithmically.
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@prevrev = split(/\./, $_);
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if (--$prevrev[$#prevrev] == 0) {
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# If it was X.Y.Z.1, just make it X.Y
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if ($#prevrev > 1) {
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pop(@prevrev);
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pop(@prevrev);
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} else {
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# It was rev 1.1 (XXX does CVS use revisions
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# greater than 1.x?)
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if ($prevrev[0] != 1) {
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print "<i>* I can't figure out the previous revision! *</i>\n";
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}
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}
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}
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if ($prevrev[$#prevrev] != 0) {
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$prev = join(".", @prevrev);
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print "<BR><A HREF=\"$scriptwhere?r1=$prev";
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print "&r2=$_\">Diffs to $prev</A>\n";
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#
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# Plus, if it's on a branch, and it's not a vendor branch,
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# offer to diff with the immediately-preceding commit if it
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# is not the previous revision as calculated above
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# and if it is on the HEAD (or at least on a higher branch)
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# (e.g. change gets committed and then brought
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# over to -stable)
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if (!/^1\.1\.1\.\d+$/ && ($i != $#revorder) &&
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($prev ne $revorder[$i+1])) {
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@tmp1 = split(/\./, $revorder[$i+1]);
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@tmp2 = split(/\./, $_);
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if ($#tmp1 < $#tmp2) {
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print "; <A HREF=\"$scriptwhere?r1=$revorder[$i+1]";
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print "&r2=$_\">Diffs to $revorder[$i+1]</A>\n";
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}
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}
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}
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# print "Log message:<BR>\n";
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print "<PRE>\n";
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print &htmlify($log{$_});
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print "</PRE><HR NOSHADE>\n";
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}
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print "<A NAME=diff>\n";
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print "This form allows you to request diff's between any two\n";
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print "revisions of a file. You may select a symbolic revision\n";
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print "name using the selection box or you may type in a numeric\n";
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print "name using the type-in text box.\n";
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print "</A><P>\n";
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print "<FORM METHOD=\"GET\" ACTION=\"$scriptwhere\">\n";
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print "Diffs between \n";
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print "<SELECT NAME=\"r1\">\n";
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print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
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print $sel;
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print "</SELECT>\n";
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print "<INPUT TYPE=\"TEXT\" NAME=\"tr1\" VALUE=\"$revorder[$#revorder]\">\n";
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print " and \n";
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print "<SELECT NAME=\"r2\">\n";
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print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
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print $sel;
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print "</SELECT>\n";
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print "<INPUT TYPE=\"TEXT\" NAME=\"tr2\" VALUE=\"$revorder[0]\">\n";
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print "<BR><INPUT TYPE=RADIO NAME=\"f\" VALUE=u CHECKED>Unidiff<br>\n";
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print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=c>Context diff<br>\n";
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print "<INPUT TYPE=SUBMIT VALUE=\"Get Diffs\">\n";
|
|
print "</FORM>\n";
|
|
print &html_footer;
|
|
print "</BODY></HTML>\n";
|
|
} else {
|
|
&fatal("404 Not Found","$where: no such file or directory");
|
|
}
|
|
|
|
sub htmlify {
|
|
local($string) = @_;
|
|
|
|
$string =~ s/&/&/g;
|
|
$string =~ s/</</g;
|
|
$string =~ s/>/>/g;
|
|
|
|
$string;
|
|
}
|
|
|
|
sub link {
|
|
local($name, $where) = @_;
|
|
|
|
"<A HREF=\"$where\">$name</A>\n";
|
|
}
|
|
|
|
sub revcmp {
|
|
local($rev1, $rev2) = @_;
|
|
local(@r1) = split(/\./, $rev1);
|
|
local(@r2) = split(/\./, $rev2);
|
|
local($a,$b);
|
|
|
|
while (($a = pop(@r1)) && ($b = pop(@r2))) {
|
|
if ($a != $b) {
|
|
return $a <=> $b;
|
|
}
|
|
}
|
|
if (@r1) { return 1; }
|
|
if (@r2) { return -1; }
|
|
return 0;
|
|
}
|
|
|
|
sub fatal {
|
|
local($errcode, $errmsg) = @_;
|
|
print "Status: $errcode\n";
|
|
print "Content-type: text/html\n";
|
|
print "\n";
|
|
print "<HTML><HEAD><TITLE>Error</TITLE></HEAD>\n";
|
|
print "<BODY>Error: $errmsg</BODY></HTML>\n";
|
|
exit(1);
|
|
}
|