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Annotation of cvsweb/cvsweb.cgi, Revision 1.37

1.1       jfieber     1: #!/usr/bin/perl -s
                      2: #
                      3: # cvsweb - a CGI interface to the CVS tree.
                      4: #
                      5: # Written by Bill Fenner <fenner@parc.xerox.com> on his own time.
                      6: #
1.21      wosch       7: # Copyright (c) 1996-1998 Bill Fenner
                      8: # All rights reserved.
                      9: #
                     10: # Redistribution and use in source and binary forms, with or without
                     11: # modification, are permitted provided that the following conditions
                     12: # are met:
                     13: # 1. Redistributions of source code must retain the above copyright
                     14: #    notice, this list of conditions and the following disclaimer.
                     15: # 2. Redistributions in binary form must reproduce the above copyright
                     16: #    notice, this list of conditions and the following disclaimer in the
                     17: #    documentation and/or other materials provided with the distribution.
                     18: #
                     19: # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     20: # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     21: # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     22: # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     23: # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     24: # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     25: # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     26: # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     27: # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     28: # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     29: # SUCH DAMAGE.
                     30: #
1.37    ! phantom    31: # $FreeBSD: www/en/cgi/cvsweb.cgi,v 1.36 1999/09/19 10:55:19 wosch Exp $
1.21      wosch      32: #
                     33:
                     34:
1.1       jfieber    35: #HTTP_USER_AGENT: Mozilla/1.1N (X11; I; SunOS 4.1.3_U1 sun4m) via proxy gateway CERN-HTTPD/3.0 libwww/2.17
1.37    ! phantom    36: #SERVER_NAME: www.FreeBSD.org
1.1       jfieber    37: #QUERY_STRING: baz
                     38: #SCRIPT_FILENAME: /usr/local/www/cgi-bin/env.pl
                     39: #SERVER_PORT: 80
                     40: #HTTP_ACCEPT: */*, image/gif, image/x-xbitmap, image/jpeg
                     41: #SERVER_PROTOCOL: HTTP/1.0
                     42: #HTTP_COOKIE: s=beta26429821397802167
                     43: #PATH_INFO: /foo/bar
                     44: #REMOTE_ADDR: 13.1.64.94
                     45: #DOCUMENT_ROOT: /usr/local/www/data/
                     46: #PATH: /sbin:/bin:/usr/sbin:/usr/bin
                     47: #PATH_TRANSLATED: /usr/local/www/data//foo/bar
                     48: #GATEWAY_INTERFACE: CGI/1.1
                     49: #REQUEST_METHOD: GET
                     50: #SCRIPT_NAME: /cgi-bin/env.pl
                     51: #SERVER_SOFTWARE: Apache/1.0.0
                     52: #REMOTE_HOST: beta.xerox.com
1.37    ! phantom    53: #SERVER_ADMIN: webmaster@FreeBSD.org
1.1       jfieber    54: #
                     55: require 'timelocal.pl';
                     56: require 'ctime.pl';
                     57:
1.2       jfieber    58: $hsty_base = "";
                     59: require 'cgi-style.pl';
1.11      wosch      60: #&get_the_source;
1.2       jfieber    61:
1.10      wosch      62: %CVSROOT = (
                     63:            'freebsd', '/home/ncvs',
                     64:            'learn', '/c/learncvs',
                     65:            );
                     66:
1.16      wosch      67: %CVSROOTdescr = (
                     68:            'freebsd', 'FreeBSD',
                     69:            'learn', 'Learn',
                     70:            );
                     71:
1.24      wosch      72: %mirrors = (
1.37    ! phantom    73:            'Germany', 'http://www.de.FreeBSD.org/cgi/cvsweb.cgi',
        !            74:            'Spain', 'http://www.es.FreeBSD.org/cgi/cvsweb.cgi',
        !            75:            'USA, California', 'http://www.FreeBSD.org/cgi/cvsweb.cgi',
        !            76:            'Japan', 'http://www.jp.FreeBSD.org/cgi/cvsweb.cgi',
1.24      wosch      77:           );
                     78:
1.10      wosch      79: $cvstreedefault = 'freebsd';
                     80: $cvstree = $cvstreedefault;
                     81: $cvsroot = $CVSROOT{"$cvstree"} || "/home/ncvs";
                     82:
                     83:
1.1       jfieber    84: $intro = "
                     85: This is a WWW interface to the FreeBSD CVS tree.
                     86: You can browse the file hierarchy by picking directories
                     87: (which have slashes after them, e.g. <b>src/</b>).
                     88: If you pick a file, you will see the revision history
                     89: for that file.
                     90: Selecting a revision number will download that revision of
                     91: the file.  There is a link at each revision to display
                     92: diffs between that revision and the previous one, and
                     93: a form at the bottom of the page that allows you to
                     94: display diffs between arbitrary revisions.
                     95: <p>
1.7       fenner     96: If you would like to use this CGI script on your own web server and
1.37    ! phantom    97: CVS tree, see <A HREF=\"http://www.FreeBSD.org/~fenner/cvsweb/\">
1.17      wosch      98: the CVSWeb distribution site</A> or the <a
1.37    ! phantom    99: href=\"http://www.FreeBSD.org/cgi/cvsweb.cgi/www/data/cgi/cvsweb.cgi\">current</a> FreeBSD version.
1.7       fenner    100: <p>
1.1       jfieber   101: Please send any suggestions, comments, etc. to
1.37    ! phantom   102: <A HREF=\"mailto:fenner\@FreeBSD.org\">Bill Fenner &lt;fenner\@FreeBSD.org&gt;</A>
1.1       jfieber   103: ";
                    104: $shortinstr = "
                    105: Click on a directory to enter that directory. Click on a file to display
                    106: its revision history and to get a
                    107: chance to display diffs between revisions.
                    108: ";
                    109:
                    110: $verbose = $v;
                    111: ($where = $ENV{'PATH_INFO'}) =~ s|^/||;
                    112: $where =~ s|/$||;
                    113: ($scriptname = $ENV{'SCRIPT_NAME'}) =~ s|^/?|/|;
                    114: $scriptname =~ s|/$||;
                    115: $scriptwhere = $scriptname . '/' . $where;
                    116: $scriptwhere =~ s|/$||;
                    117:
1.9       fenner    118: if ($query = $ENV{'QUERY_STRING'}) {
                    119:     foreach (split(/&/, $query)) {
1.7       fenner    120:        s/%(..)/sprintf("%c", hex($1))/ge;      # unquote %-quoted
                    121:        if (/(\S+)=(.*)/) {
                    122:            $input{$1} = $2;
                    123:        } else {
                    124:            $input{$_}++;
                    125:        }
                    126:     }
1.9       fenner    127:     $query = "?" . $query;
1.7       fenner    128: }
1.10      wosch     129:
                    130:
1.11      wosch     131: $config = '/usr/local/etc/cvsweb';
                    132: do "$config" if -f $config;
1.10      wosch     133:
                    134: if ($input{'cvsroot'}) {
                    135:     if ($CVSROOT{$input{'cvsroot'}}) {
                    136:        $cvstree = $input{'cvsroot'};
                    137:        $cvsroot = $CVSROOT{"$cvstree"};
                    138:     }
                    139: }
1.11      wosch     140: do "$config-$cvstree" if -f "$config-$cvstree";
1.10      wosch     141:
                    142: $fullname = $cvsroot . '/' . $where;
1.12      fenner    143:
1.10      wosch     144: if (!-d $cvsroot) {
1.12      fenner    145:        &fatal("500 Internal Error",'$CVSROOT not found!<P>The server on which the CVS tree lives is probably down.  Please try again in a few minutes.');
1.10      wosch     146: }
                    147:
                    148:
1.16      wosch     149: {
                    150:     local(@foo, $i);
                    151:     local($scriptname) = $ENV{'SCRIPT_NAME'};
1.23      wosch     152:     foreach (sort keys %CVSROOT) {
1.16      wosch     153:        if (-d $CVSROOT{$_}) {
                    154:            push(@foo, $_);
                    155:        }
                    156:     }
                    157:     if ($#foo > 1) {
1.27      hoek      158:        $intro .= "<p>\nThis script supports the following CVS trees:\n";
1.16      wosch     159:        for($i = 0; $i <= $#foo; $i++) {
                    160:            $intro .= qq{<a href="$scriptname?cvsroot=$foo[$i]">} .
                    161:                ($CVSROOTdescr{$foo[$i]} ?
                    162:                 $CVSROOTdescr{$foo[$i]} : $foo[$i]) . qq{</a>} .
                    163:                     ($i == $#foo  ? ".\n" : ",\n");
1.24      wosch     164:        }
                    165:     }
                    166: }
                    167:
                    168:
                    169: {
                    170:     local(@mirrors) = sort keys %mirrors;;
                    171:     if ($#mirrors >= 0) {
                    172:        $intro .= "<p>\nThis script is mirrored in:\n";
                    173:        local($m);
                    174:        for($m = 0; $m <= $#mirrors; $m++) {
                    175:            $intro .= qq(<a href="$mirrors{$mirrors[$m]}">$mirrors[$m]</a>);
                    176:            $intro .= ',' if $m != $#mirrors;
                    177:            $intro .= "\n";
1.16      wosch     178:        }
                    179:     }
                    180: }
                    181:
                    182:
1.1       jfieber   183: if (-d $fullname) {
                    184:        opendir(DIR, $fullname) || &fatal("404 Not Found","$where: $!");
                    185:        @dir = readdir(DIR);
                    186:        closedir(DIR);
                    187:        if ($where eq '') {
1.2       jfieber   188:            print &html_header("FreeBSD CVS Repository");
1.1       jfieber   189:            print $intro;
                    190:        } else {
1.2       jfieber   191:            print &html_header("/$where");
1.1       jfieber   192:            print $shortinstr;
                    193:        }
1.16      wosch     194:        print "<p>";
1.22      wosch     195:        print "Current CVS tree: <b>",
                    196:                ($CVSROOTdescr{"$cvstree"} ? $CVSROOTdescr{"$cvstree"} :
                    197:                        $cvstree), "</b><br>\n";
1.16      wosch     198:        print "Current directory: <b>/$where</b>\n";
1.2       jfieber   199:        print "<P><HR NOSHADE>\n";
1.1       jfieber   200:        # Using <MENU> in this manner violates the HTML2.0 spec but
                    201:        # provides the results that I want in most browsers.  Another
                    202:        # case of layout spooging up HTML.
                    203:        print "<MENU>\n";
1.9       fenner    204:        lookingforattic:
                    205:        for ($i = 0; $i <= $#dir; $i++) {
                    206:                if ($dir[$i] eq "Attic") {
                    207:                        last lookingforattic;
                    208:                }
                    209:        }
1.12      fenner    210:        $haveattic = 1 if ($i <= $#dir);
1.9       fenner    211:        if (!$input{"showattic"} && ($i <= $#dir) &&
                    212:                                opendir(DIR, $fullname . "/Attic")) {
                    213:                splice(@dir, $i, 1,
                    214:                        grep((s|^|Attic/|,!m|/\.|), readdir(DIR)));
                    215:                closedir(DIR);
                    216:        }
                    217:        # Sort without the Attic/ pathname.
                    218:        foreach (sort {($c=$a)=~s|.*/||;($d=$b)=~s|.*/||;($c cmp $d)} @dir) {
1.1       jfieber   219:            if ($_ eq '.') {
                    220:                next;
                    221:            }
1.19      wosch     222:            # ignore CVS lock and stale NFS files
                    223:            next if /^#cvs\.|^,|^\.nfs/;
1.18      wosch     224:
1.9       fenner    225:            if (s|^Attic/||) {
                    226:                $attic = " (in the Attic)";
                    227:            } else {
                    228:                $attic = "";
                    229:            }
1.1       jfieber   230:            if ($_ eq '..') {
                    231:                next if ($where eq '');
                    232:                ($updir = $scriptwhere) =~ s|[^/]+$||;
                    233:                print "<IMG SRC=\"/icons/back.gif\"> ",
1.9       fenner    234:                    &link("Previous Directory",$updir . $query), "<BR>";
1.7       fenner    235: #              print "<IMG SRC=???> ",
                    236: #                  &link("Directory-wide diffs", $scriptwhere . '/*'), "<BR>";
1.1       jfieber   237:            } elsif (-d $fullname . "/" . $_) {
                    238:                print "<IMG SRC=\"/icons/dir.gif\"> ",
1.12      fenner    239:                    &link($_ . "/", $scriptwhere . '/' . $_ . '/' . $query),
                    240:                            $attic, "<BR>";
1.1       jfieber   241:            } elsif (s/,v$//) {
1.7       fenner    242: # TODO: add date/time?  How about sorting?
1.1       jfieber   243:                print "<IMG SRC=\"/icons/text.gif\"> ",
1.9       fenner    244:                    &link($_, $scriptwhere . '/' .
                    245:                            ($attic ? "Attic/" : "") . $_ . $query),
1.12      fenner    246:                            $attic, "<BR>";
1.1       jfieber   247:            }
                    248:        }
                    249:        print "</MENU>\n";
1.9       fenner    250:        if ($input{"only_on_branch"}) {
                    251:            print "<HR><FORM METHOD=\"GET\" ACTION=\"${scriptwhere}\">\n";
                    252:            print "Currently showing only branch $input{'only_on_branch'}.\n";
                    253:            $input{"only_on_branch"}="";
                    254:            foreach $k (keys %input) {
                    255:                print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
                    256:            }
                    257:            print "<INPUT TYPE=SUBMIT VALUE=\"Show all branches\">\n";
                    258:            print "</FORM>\n";
                    259:        }
                    260:        $formwhere = $scriptwhere;
                    261:        $formwhere =~ s|Attic/?$|| if ($input{"showattic"});
1.12      fenner    262:        if ($haveattic) {
                    263:                print "<HR><FORM METHOD=\"GET\" ACTION=\"${formwhere}\">\n";
                    264:                $input{"showattic"}=!$input{"showattic"};
                    265:                foreach $k (keys %input) {
                    266:                    print "<INPUT TYPE=hidden NAME=$k VALUE=$input{$k}>\n" if $input{$k};
                    267:                }
                    268:                print "<INPUT TYPE=SUBMIT VALUE=\"";
                    269:                print ($input{"showattic"} ? "Show" : "Hide");
                    270:                print " attic directories\">\n";
                    271:                print "</FORM>\n";
                    272:        }
1.2       jfieber   273:        print &html_footer;
1.1       jfieber   274:        print "</BODY></HTML>\n";
                    275: } elsif (-f $fullname . ',v') {
1.7       fenner    276:        if ($input{'rev'} =~ /^[\d\.]+$/) {
                    277:                &checkout($fullname, $input{'rev'});
                    278:                exit;
                    279:        }
                    280:        if ($input{'r1'} && $input{'r2'}) {
                    281:                &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    282:                        $input{'r2'}, $input{'tr2'}, $input{'f'});
1.1       jfieber   283:                exit;
                    284:        }
1.12      fenner    285: print("going to dolog($fullname)\n") if ($verbose);
                    286:        &dolog($fullname);
                    287: } elsif ($fullname =~ s/\.diff$// && -f $fullname . ",v" &&
                    288:                                $input{'r1'} && $input{'r2'}) {
                    289:        # Allow diffs using the ".diff" extension
                    290:        # so that browsers that default to the URL
                    291:        # for a save filename don't save diff's as
                    292:        # e.g. foo.c
                    293:        &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    294:                $input{'r2'}, $input{'tr2'}, $input{'f'});
                    295:        exit;
                    296: } elsif (($newname = $fullname) =~ s|/([^/]+)$|/Attic/$1| &&
                    297:                                 -f $newname . ",v") {
                    298:        # The file has been removed and is in the Attic.
                    299:        # Send a redirect pointing to the file in the Attic.
                    300:        ($newplace = $scriptwhere) =~ s|/([^/]+)$|/Attic/$1|;
                    301:        &redirect($newplace);
                    302:        exit;
                    303: } elsif (0 && (@files = &safeglob($fullname . ",v"))) {
                    304:        print "Content-type: text/plain\n\n";
                    305:        print "You matched the following files:\n";
                    306:        print join("\n", @files);
                    307:        # Find the tags from each file
                    308:        # Display a form offering diffs between said tags
                    309: } else {
                    310:        # Assume it's a module name with a potential path following it.
1.13      fenner    311:        $xtra = $& if (($module = $where) =~ s|/.*||);
1.12      fenner    312:        # Is there an indexed version of modules?
                    313:        if (open(MODULES, "$cvsroot/CVSROOT/modules")) {
                    314:                while (<MODULES>) {
                    315:                        if (/^(\S+)\s+(\S+)/o && $module eq $1
                    316:                                && -d "${cvsroot}/$2" && $module ne $2) {
                    317:                                &redirect($scriptname . '/' . $2 . $xtra);
                    318:                        }
                    319:                }
                    320:        }
                    321:        &fatal("404 Not Found","$where: no such file or directory");
                    322: }
                    323:
                    324: sub htmlify {
                    325:        local($string, $pr) = @_;
                    326:
                    327:        $string =~ s/&/&amp;/g;
                    328:        $string =~ s/</&lt;/g;
                    329:        $string =~ s/>/&gt;/g;
                    330:
                    331:        if ($pr) {
1.37    ! phantom   332:                $string =~ s!\b((pr[:#]?\s*#?)|((bin|conf|docs|gnu|i386|kern|misc|ports)\/))(\d+)\b!<A HREF=http://www.FreeBSD.org/cgi/query-pr.cgi?pr=\5>$&</A>!ig;
1.12      fenner    333:        }
                    334:
                    335:        $string;
                    336: }
                    337:
                    338: sub link {
                    339:        local($name, $where) = @_;
                    340:
                    341:        "<A HREF=\"$where\">$name</A>\n";
                    342: }
                    343:
                    344: sub revcmp {
                    345:        local($rev1, $rev2) = @_;
                    346:        local(@r1) = split(/\./, $rev1);
                    347:        local(@r2) = split(/\./, $rev2);
                    348:        local($a,$b);
                    349:
                    350:        while (($a = shift(@r1)) && ($b = shift(@r2))) {
                    351:            if ($a != $b) {
                    352:                return $a <=> $b;
                    353:            }
                    354:        }
                    355:        if (@r1) { return 1; }
                    356:        if (@r2) { return -1; }
                    357:        return 0;
                    358: }
                    359:
                    360: sub fatal {
                    361:        local($errcode, $errmsg) = @_;
                    362:        print "Status: $errcode\n";
                    363:        print &html_header("Error");
                    364: #      print "Content-type: text/html\n";
                    365: #      print "\n";
                    366: #      print "<HTML><HEAD><TITLE>Error</TITLE></HEAD>\n";
                    367: #      print "<BODY>Error: $errmsg</BODY></HTML>\n";
                    368:        print "Error: $errmsg\n";
                    369:        print &html_footer;
                    370:        exit(1);
                    371: }
                    372:
                    373: sub redirect {
                    374:        local($url) = @_;
                    375:        print "Status: 301 Moved\n";
                    376:        print "Location: $url\n";
                    377:        print &html_header("Moved");
                    378: #      print "Content-type: text/html\n";
                    379: #      print "\n";
                    380: #      print "<HTML><HEAD><TITLE>Moved</TITLE></HEAD>\n";
                    381: #      print "<BODY>This document is located <A HREF=$url>here</A>.</BODY></HTML>\n";
                    382:        print "This document is located <A HREF=$url>here</A>.\n";
                    383:        print &html_footer;
                    384:        exit(1);
                    385: }
                    386:
                    387: sub safeglob {
                    388:        local($filename) = @_;
                    389:        local($dirname);
                    390:        local(@results);
                    391:
                    392:        ($dirname = $filename) =~ s|/[^/]+$||;
                    393:        $filename =~ s|.*/||;
                    394:
                    395:        if (opendir(DIR, $dirname)) {
                    396:                $glob = $filename;
                    397:        #       transform filename from glob to regex.  Deal with:
                    398:        #       [, {, ?, * as glob chars
                    399:        #       make sure to escape all other regex chars
                    400:                $glob =~ s/([\.\(\)\|\+])/\\$1/g;
                    401:                $glob =~ s/\*/.*/g;
                    402:                $glob =~ s/\?/./g;
                    403:                $glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg;
                    404:                foreach (readdir(DIR)) {
                    405:                        if (/^${glob}$/) {
                    406:                                push(@results, $dirname . "/" .$_);
                    407:                        }
                    408:                }
                    409:        }
                    410:
                    411:        @results;
                    412: }
                    413:
                    414: sub checkout {
                    415:        local($fullname, $rev) = @_;
                    416:
                    417:        open(RCS, "co -p$rev '$fullname' 2>&1 |") ||
                    418:            &fail("500 Internal Error", "Couldn't co: $!");
                    419: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  standard output
                    420: # or
                    421: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  stdout
                    422: # revision 1.1.1.2
                    423: # /*
                    424:        $_ = <RCS>;
                    425:        if (/^(\S+),v\s+-->\s+st(andar)?d ?out(put)?\s*$/o && $1 eq $fullname) {
                    426:            # As expected
                    427:        } else {
                    428:            &fatal("500 Internal Error",
                    429:                "Unexpected output from co: $_");
                    430:        }
                    431:        $_ = <RCS>;
1.29      fenner    432:        if ($rev eq ".") {
                    433:            # latest rev requested, don't check
                    434:        } elsif (/^revision\s+$rev\s*$/) {
1.12      fenner    435:            # As expected
                    436:        } else {
                    437:            &fatal("500 Internal Error",
                    438:                "Unexpected output from co: $_");
                    439:        }
                    440:        $| = 1;
                    441:        print "Content-type: text/plain\n\n";
                    442:        print <RCS>;
                    443:        close(RCS);
                    444: }
                    445:
                    446: sub dodiff {
                    447:        local($fullname, $r1, $tr1, $r2, $tr2, $f) = @_;
                    448:
                    449:        if ($r1 =~ /([^:]+)(:(.+))?/) {
                    450:            $rev1 = $1;
                    451:            $sym1 = $3;
                    452:        }
                    453:        if ($rev1 eq 'text') {
                    454:            $rev1 = $tr1;
                    455:        }
                    456:        if ($r2 =~ /([^:]+)(:(.+))?/) {
                    457:            $rev2 = $1;
                    458:            $sym2 = $3;
                    459:        }
                    460:        if ($rev2 eq 'text') {
                    461:            $rev2 = $tr2;
                    462:        }
                    463:        if (!($rev1 =~ /^[\d\.]+$/) || !($rev2 =~ /^[\d\.]+$/)) {
                    464:            &fatal("404 Not Found",
                    465:                    "Malformed query \"$ENV{'QUERY_STRING'}\"");
                    466:        }
                    467: #
                    468: # rev1 and rev2 are now both numeric revisions.
                    469: # Thus we do a DWIM here and swap them if rev1 is after rev2.
                    470: # XXX should we warn about the fact that we do this?
                    471:        if (&revcmp($rev1,$rev2) > 0) {
                    472:            ($tmp1, $tmp2) = ($rev1, $sym1);
                    473:            ($rev1, $sym1) = ($rev2, $sym2);
                    474:            ($rev2, $sym2) = ($tmp1, $tmp2);
                    475:        }
                    476: #
                    477: #      XXX Putting '-p' here is a personal preference
                    478:        if ($f eq 'c') {
                    479:            $difftype = '-p -c';
                    480:            $diffname = "Context diff";
                    481:        } elsif ($f eq 's') {
                    482:            $difftype = '--side-by-side --width=164';
                    483:            $diffname = "Side by Side";
                    484:        } else {
                    485:            $difftype = '-p -u';
                    486:            $diffname = "Unidiff";
                    487:        }
                    488: # XXX should this just be text/plain
                    489: # or should it have an HTML header and then a <pre>
                    490:        print "Content-type: text/plain\n\n";
                    491:        open(RCSDIFF, "rcsdiff $difftype -r$rev1 -r$rev2 '$fullname' 2>&1 |") ||
                    492:            &fail("500 Internal Error", "Couldn't rcsdiff: $!");
                    493: #
                    494: #===================================================================
                    495: #RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
                    496: #retrieving revision 1.16
                    497: #retrieving revision 1.17
                    498: #diff -c -r1.16 -r1.17
                    499: #*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    500: #--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
                    501: #
                    502: # Ideas:
                    503: # - nuke the stderr output if it's what we expect it to be
                    504: # - Add "no differences found" if the diff command supplied no output.
                    505: #
                    506: #*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    507: #--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
                    508: # (bogus example, but...)
                    509: #
                    510:        if ($difftype eq '-u') {
                    511:            $f1 = '---';
                    512:            $f2 = '\+\+\+';
                    513:        } else {
                    514:            $f1 = '\*\*\*';
                    515:            $f2 = '---';
                    516:        }
                    517:        while (<RCSDIFF>) {
                    518:            if (m|^$f1 $cvsroot|o) {
                    519:                s|$cvsroot/||o;
                    520:                if ($sym1) {
                    521:                    chop;
                    522:                    $_ .= " " . $sym1 . "\n";
                    523:                }
                    524:            } elsif (m|^$f2 $cvsroot|o) {
                    525:                s|$cvsroot/||o;
                    526:                if ($sym2) {
                    527:                    chop;
                    528:                    $_ .= " " . $sym2 . "\n";
                    529:                }
                    530:            }
                    531:            print $_;
                    532:        }
                    533:        close(RCSDIFF);
                    534: }
                    535:
                    536: sub dolog {
                    537:        local($fullname) = @_;
                    538:        local($curbranch,$symnames);    #...
                    539:
                    540:        print("Going to rlog '$fullname'\n") if ($verbose);
1.1       jfieber   541:        open(RCS, "rlog '$fullname'|") || &fatal("500 Internal Error",
                    542:                                                "Failed to spawn rlog");
                    543:        while (<RCS>) {
                    544:            print if ($verbose);
1.8       fenner    545:            if (/^branch:\s+([\d\.]+)/) {
                    546:                $curbranch = $1;
                    547:            }
1.1       jfieber   548:            if ($symnames) {
                    549:                if (/^\s+([^:]+):\s+([\d\.]+)/) {
                    550:                    $symrev{$1} = $2;
                    551:                    if ($revsym{$2}) {
                    552:                        $revsym{$2} .= ", ";
                    553:                    }
                    554:                    $revsym{$2} .= $1;
                    555:                } else {
                    556:                    $symnames = 0;
                    557:                }
                    558:            } elsif (/^symbolic names/) {
                    559:                $symnames = 1;
                    560:            } elsif (/^-----/) {
                    561:                last;
                    562:            }
                    563:        }
1.7       fenner    564:
                    565:        if ($onlyonbranch = $input{'only_on_branch'}) {
                    566:            ($onlyonbranch = $symrev{$onlyonbranch}) =~ s/\.0\././;
                    567:            ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
                    568:        }
                    569:
1.1       jfieber   570: # each log entry is of the form:
                    571: # ----------------------------
                    572: # revision 3.7.1.1
                    573: # date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
                    574: # log info
                    575: # ----------------------------
                    576:        logentry:
                    577:        while (!/^=========/) {
                    578:            $_ = <RCS>;
1.12      fenner    579:            last logentry if (!defined($_));    # EOF
1.1       jfieber   580:            print "R:", $_ if ($verbose);
                    581:            if (/^revision ([\d\.]+)/) {
                    582:                $rev = $1;
                    583:            } elsif (/^========/ || /^----------------------------$/) {
                    584:                next logentry;
                    585:            } else {
1.12      fenner    586:                # The rlog output is syntactically ambiguous.  We must
                    587:                # have guessed wrong about where the end of the last log
                    588:                # message was.
                    589:                # Since this is likely to happen when people put rlog output
                    590:                # in their commit messages, don't even bother keeping
                    591:                # these lines since we don't know what revision they go with
                    592:                # any more.
                    593:                next logentry;
                    594: #              &fatal("500 Internal Error","Error parsing RCS output: $_");
1.1       jfieber   595:            }
                    596:            $_ = <RCS>;
                    597:            print "D:", $_ if ($verbose);
1.9       fenner    598:            if (m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);\s+state:\s+(\S+);|) {
1.1       jfieber   599:                $yr = $1;
                    600:                # damn 2-digit year routines
                    601:                if ($yr > 100) {
                    602:                    $yr -= 1900;
                    603:                }
                    604:                $date{$rev} = &timelocal($6,$5,$4,$3,$2 - 1,$yr);
                    605:                $author{$rev} = $7;
1.9       fenner    606:                $state{$rev} = $8;
1.1       jfieber   607:            } else {
                    608:                &fatal("500 Internal Error", "Error parsing RCS output: $_");
                    609:            }
                    610:            line:
                    611:            while (<RCS>) {
                    612:                print "L:", $_ if ($verbose);
                    613:                next line if (/^branches:\s/);
                    614:                last line if (/^----------------------------$/ || /^=========/);
                    615:                $log{$rev} .= $_;
                    616:            }
                    617:            print "E:", $_ if ($verbose);
                    618:        }
                    619:        close(RCS);
                    620:        print "Done reading RCS file\n" if ($verbose);
                    621: #
                    622: # Sort the revisions into commit-date order.
                    623:        @revorder = sort {$date{$b} <=> $date{$a}} keys %date;
                    624:        print "Done sorting revisions\n" if ($verbose);
                    625: #
                    626: # HEAD is an artificial tag which is simply the highest tag number on the main
1.8       fenner    627: # branch, unless there is a branch tag in the RCS file in which case it's the
                    628: # highest revision on that branch.  Find it by looking through @revorder; it
                    629: # is the first commit listed on the appropriate branch.
                    630:        $headrev = $curbranch || "1";
1.1       jfieber   631:        revision:
                    632:        for ($i = 0; $i <= $#revorder; $i++) {
1.8       fenner    633:            if ($revorder[$i] =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
1.1       jfieber   634:                if ($revsym{$revorder[$i]}) {
                    635:                    $revsym{$revorder[$i]} .= ", ";
                    636:                }
                    637:                $revsym{$revorder[$i]} .= "HEAD";
                    638:                $symrev{"HEAD"} = $revorder[$i];
                    639:                last revision;
                    640:            }
                    641:        }
                    642:        print "Done finding HEAD\n" if ($verbose);
                    643: #
                    644: # Now that we know all of the revision numbers, we can associate
                    645: # absolute revision numbers with all of the symbolic names, and
                    646: # pass them to the form so that the same association doesn't have
                    647: # to be built then.
                    648: #
                    649: # should make this a case-insensitive sort
                    650:        foreach (sort keys %symrev) {
                    651:            $rev = $symrev{$_};
                    652:            if ($rev =~ /^(\d+(\.\d+)+)\.0\.(\d+)$/) {
1.7       fenner    653:                push(@branchnames, $_);
1.1       jfieber   654:                #
                    655:                # A revision number of A.B.0.D really translates into
                    656:                # "the highest current revision on branch A.B.D".
                    657:                #
                    658:                # If there is no branch A.B.D, then it translates into
                    659:                # the head A.B .
                    660:                #
                    661:                $head = $1;
                    662:                $branch = $3;
                    663:                $regex = $head . "." . $branch;
                    664:                $regex =~ s/\./\./g;
                    665:                #             <
                    666:                #           \____/
                    667:                $rev = $head;
                    668:
                    669:                revision:
                    670:                foreach $r (@revorder) {
                    671:                    if ($r =~ /^${regex}/) {
                    672:                        $rev = $head . "." . $branch;
                    673:                        last revision;
                    674:                    }
                    675:                }
                    676:                $revsym{$rev} .= ", " if ($revsym{$rev});
                    677:                $revsym{$rev} .= $_;
1.8       fenner    678:                if ($rev ne $head) {
                    679:                    $branchpoint{$head} .= ", " if ($branchpoint{$head});
                    680:                    $branchpoint{$head} .= $_;
                    681:                }
1.1       jfieber   682:            }
                    683:            $sel .= "<OPTION VALUE=\"${rev}:${_}\">$_\n";
                    684:        }
                    685:        print "Done associating revisions with branches\n" if ($verbose);
1.2       jfieber   686:         print &html_header("CVS log for $where");
1.9       fenner    687:        ($upwhere = $where) =~ s|(Attic/)?[^/]+$||;
                    688:        print "Up to ", &link($upwhere,$scriptname . "/" . $upwhere . $query);
1.1       jfieber   689:        print "<BR>\n";
                    690:        print "<A HREF=\"#diff\">Request diff between arbitrary revisions</A>\n";
1.2       jfieber   691:        print "<HR NOSHADE>\n";
1.8       fenner    692:        if ($curbranch) {
                    693:            print "Default branch is ";
                    694:            print ($revsym{$curbranch} || $curbranch);
                    695:        } else {
                    696:            print "No default branch";
                    697:        }
                    698:        print "<BR><HR NOSHADE>\n";
1.1       jfieber   699: # The other possible U.I. I can see is to have each revision be hot
                    700: # and have the first one you click do ?r1=foo
                    701: # and since there's no r2 it keeps going & the next one you click
                    702: # adds ?r2=foo and performs the query.
                    703: # I suppose there's no reason we can't try both and see which one
                    704: # people prefer...
                    705:
                    706:        for ($i = 0; $i <= $#revorder; $i++) {
                    707:            $_ = $revorder[$i];
1.7       fenner    708:            ($br = $_) =~ s/\.\d+$//;
                    709:            next if ($onlyonbranch && $br ne $onlyonbranch &&
                    710:                                            $_ ne $onlybranchpoint);
1.4       fenner    711:            print "<a NAME=\"rev$_\"></a>";
                    712:            foreach $sym (split(", ", $revsym{$_})) {
                    713:                print "<a NAME=\"$sym\"></a>";
                    714:            }
                    715:            if ($revsym{$br} && !$nameprinted{$br}) {
                    716:                foreach $sym (split(", ", $revsym{$br})) {
                    717:                    print "<a NAME=\"$sym\"></a>";
                    718:                }
                    719:                $nameprinted{$br}++;
                    720:            }
                    721:            print "\n";
1.10      wosch     722:            print "<A HREF=\"$scriptwhere?rev=$_" .
1.12      fenner    723:                &cvsroot . "\"><b>$_</b></A>";
1.1       jfieber   724:            if (/^1\.1\.1\.\d+$/) {
                    725:                print " <i>(vendor branch)</i>";
                    726:            }
1.14      wosch     727:            print " <i>" . &ctime($date{$_}) . " UTC</i> by ";
1.35      wosch     728:            print "<i>" . $author{$_} . "</i>\n";
1.1       jfieber   729:            if ($revsym{$_}) {
                    730:                print "<BR>CVS Tags: <b>$revsym{$_}</b>";
                    731:            }
1.4       fenner    732:            if ($revsym{$br})  {
1.1       jfieber   733:                if ($revsym{$_}) {
                    734:                    print "; ";
                    735:                } else {
                    736:                    print "<BR>";
                    737:                }
1.8       fenner    738:                print "Branch: <b>$revsym{$br}</b>\n";
                    739:            }
                    740:            if ($branchpoint{$_}) {
                    741:                if ($revsym{$br} || $revsym{$_}) {
                    742:                    print "; ";
                    743:                } else {
                    744:                    print "<BR>";
                    745:                }
                    746:                print "Branch point for: <b>$branchpoint{$_}</b>\n";
1.1       jfieber   747:            }
                    748:            # Find the previous revision on this branch.
                    749:            @prevrev = split(/\./, $_);
                    750:            if (--$prevrev[$#prevrev] == 0) {
                    751:                # If it was X.Y.Z.1, just make it X.Y
                    752:                if ($#prevrev > 1) {
                    753:                    pop(@prevrev);
                    754:                    pop(@prevrev);
                    755:                } else {
                    756:                    # It was rev 1.1 (XXX does CVS use revisions
                    757:                    # greater than 1.x?)
                    758:                    if ($prevrev[0] != 1) {
                    759:                        print "<i>* I can't figure out the previous revision! *</i>\n";
                    760:                    }
                    761:                }
                    762:            }
                    763:            if ($prevrev[$#prevrev] != 0) {
                    764:                $prev = join(".", @prevrev);
1.7       fenner    765:                print "<BR><A HREF=\"${scriptwhere}.diff?r1=$prev";
1.12      fenner    766:                print "&r2=$_" . &cvsroot . "\">Diffs to $prev</A>\n";
1.1       jfieber   767:                #
                    768:                # Plus, if it's on a branch, and it's not a vendor branch,
                    769:                # offer to diff with the immediately-preceding commit if it
                    770:                # is not the previous revision as calculated above
                    771:                # and if it is on the HEAD (or at least on a higher branch)
                    772:                # (e.g. change gets committed and then brought
                    773:                # over to -stable)
                    774:                if (!/^1\.1\.1\.\d+$/ && ($i != $#revorder) &&
                    775:                                        ($prev ne $revorder[$i+1])) {
                    776:                    @tmp1 = split(/\./, $revorder[$i+1]);
                    777:                    @tmp2 = split(/\./, $_);
                    778:                    if ($#tmp1 < $#tmp2) {
1.7       fenner    779:                        print "; <A HREF=\"${scriptwhere}.diff?r1=$revorder[$i+1]";
1.10      wosch     780:                        print "&r2=$_" . &cvsroot .
1.12      fenner    781:                             "\">Diffs to $revorder[$i+1]</A>\n";
1.1       jfieber   782:                    }
                    783:                }
                    784:            }
1.9       fenner    785:            if ($state{$_} eq "dead") {
                    786:                print "<BR><B><I>FILE REMOVED</I></B>\n";
                    787:            }
1.1       jfieber   788:            print "<PRE>\n";
1.7       fenner    789:            print &htmlify($log{$_}, 1);
1.2       jfieber   790:            print "</PRE><HR NOSHADE>\n";
1.1       jfieber   791:        }
                    792:        print "<A NAME=diff>\n";
                    793:        print "This form allows you to request diff's between any two\n";
                    794:        print "revisions of a file.  You may select a symbolic revision\n";
                    795:        print "name using the selection box or you may type in a numeric\n";
                    796:        print "name using the type-in text box.\n";
                    797:        print "</A><P>\n";
1.7       fenner    798:        print "<FORM METHOD=\"GET\" ACTION=\"${scriptwhere}.diff\">\n";
1.12      fenner    799:         print "<INPUT TYPE=HIDDEN NAME=\"cvsroot\" VALUE=\"$cvstree\">\n"
1.10      wosch     800:              if &cvsroot;
1.1       jfieber   801:        print "Diffs between \n";
                    802:        print "<SELECT NAME=\"r1\">\n";
                    803:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    804:        print $sel;
                    805:        print "</SELECT>\n";
                    806:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr1\" VALUE=\"$revorder[$#revorder]\">\n";
                    807:        print " and \n";
                    808:        print "<SELECT NAME=\"r2\">\n";
                    809:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    810:        print $sel;
                    811:        print "</SELECT>\n";
                    812:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr2\" VALUE=\"$revorder[0]\">\n";
                    813:        print "<BR><INPUT TYPE=RADIO NAME=\"f\" VALUE=u CHECKED>Unidiff<br>\n";
                    814:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=c>Context diff<br>\n";
1.7       fenner    815:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=s>Side-by-Side<br>\n";
1.1       jfieber   816:        print "<INPUT TYPE=SUBMIT VALUE=\"Get Diffs\">\n";
                    817:        print "</FORM>\n";
1.7       fenner    818:        print "<HR noshade>\n";
                    819:        print "<A name=branch>\n";
                    820:        print "You may select to see revision information from only\n";
                    821:        print "a single branch.\n";
                    822:        print "</A><P>\n";
                    823:        print "<FORM METHOD=\"GET\" ACTION=\"$scriptwhere\">\n";
1.10      wosch     824:         print qq{<input type=hidden name=cvsroot value=$cvstree>\n}
                    825:              if &cvsroot;
1.7       fenner    826:        print "Branch: \n";
                    827:        print "<SELECT NAME=\"only_on_branch\">\n";
1.9       fenner    828:        print "<OPTION VALUE=\"\"";
                    829:        print " SELECTED" if ($input{"only_on_branch"} eq "");
                    830:        print ">Show all branches\n";
1.7       fenner    831:        foreach (sort @branchnames) {
1.9       fenner    832:                print "<OPTION";
                    833:                print " SELECTED" if ($input{"only_on_branch"} eq $_);
                    834:                print ">${_}\n";
1.7       fenner    835:        }
                    836:        print "</SELECT>\n";
                    837:        print "<INPUT TYPE=SUBMIT VALUE=\"View Branch\">\n";
                    838:        print "</FORM>\n";
1.2       jfieber   839:         print &html_footer;
1.1       jfieber   840:        print "</BODY></HTML>\n";
1.10      wosch     841: }
                    842:
                    843: sub cvsroot {
                    844:     return '' if $cvstree eq $cvstreedefault;
                    845:     return "&cvsroot=" . $cvstree;
1.1       jfieber   846: }

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