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Annotation of cvsweb/cvsweb.cgi, Revision 1.18

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

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