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Annotation of cvsweb/cvsweb.cgi, Revision 1.8

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';
                     33:
1.1       jfieber    34: $cvsroot = '/home/ncvs';
                     35: $intro = "
                     36: This is a WWW interface to the FreeBSD CVS tree.
                     37: You can browse the file hierarchy by picking directories
                     38: (which have slashes after them, e.g. <b>src/</b>).
                     39: If you pick a file, you will see the revision history
                     40: for that file.
                     41: Selecting a revision number will download that revision of
                     42: the file.  There is a link at each revision to display
                     43: diffs between that revision and the previous one, and
                     44: a form at the bottom of the page that allows you to
                     45: display diffs between arbitrary revisions.
                     46: <p>
1.7       fenner     47: If you would like to use this CGI script on your own web server and
                     48: CVS tree, see <A HREF=\"http://www.freebsd.org/~fenner/cvsweb/\">
                     49: the CVSWeb distribution site</A>.
                     50: <p>
1.1       jfieber    51: Please send any suggestions, comments, etc. to
                     52: <A HREF=\"mailto:fenner@freebsd.org\">Bill Fenner &lt;fenner@freebsd.org&gt;</A>
                     53: ";
                     54: $shortinstr = "
                     55: Click on a directory to enter that directory. Click on a file to display
                     56: its revision history and to get a
                     57: chance to display diffs between revisions.
                     58: ";
                     59:
                     60: $verbose = $v;
                     61: ($where = $ENV{'PATH_INFO'}) =~ s|^/||;
                     62: $where =~ s|/$||;
                     63: $fullname = $cvsroot . '/' . $where;
                     64: ($scriptname = $ENV{'SCRIPT_NAME'}) =~ s|^/?|/|;
                     65: $scriptname =~ s|/$||;
                     66: $scriptwhere = $scriptname . '/' . $where;
                     67: $scriptwhere =~ s|/$||;
                     68:
                     69: if (!-d $cvsroot) {
                     70:        &fatal("500 Internal Error",'$CVSROOT not found!');
                     71: }
1.7       fenner     72:
                     73: if ($q = $ENV{'QUERY_STRING'}) {
                     74:     foreach (split(/&/, $q)) {
                     75:        s/%(..)/sprintf("%c", hex($1))/ge;      # unquote %-quoted
                     76:        if (/(\S+)=(.*)/) {
                     77:            $input{$1} = $2;
                     78:        } else {
                     79:            $input{$_}++;
                     80:        }
                     81:     }
                     82: }
1.1       jfieber    83: if (-d $fullname) {
                     84:        opendir(DIR, $fullname) || &fatal("404 Not Found","$where: $!");
                     85:        @dir = readdir(DIR);
                     86:        closedir(DIR);
                     87:        if ($where eq '') {
1.2       jfieber    88:            print &html_header("FreeBSD CVS Repository");
1.1       jfieber    89:            print $intro;
                     90:        } else {
1.2       jfieber    91:            print &html_header("/$where");
1.1       jfieber    92:            print $shortinstr;
                     93:        }
                     94:        print "<p>Current directory: <b>/$where</b>\n";
1.2       jfieber    95:        print "<P><HR NOSHADE>\n";
1.1       jfieber    96:        # Using <MENU> in this manner violates the HTML2.0 spec but
                     97:        # provides the results that I want in most browsers.  Another
                     98:        # case of layout spooging up HTML.
                     99:        print "<MENU>\n";
                    100:        foreach (sort @dir) {
                    101:            if ($_ eq '.') {
                    102:                next;
                    103:            }
                    104:            if ($_ eq '..') {
                    105:                next if ($where eq '');
                    106:                ($updir = $scriptwhere) =~ s|[^/]+$||;
                    107:                print "<IMG SRC=\"/icons/back.gif\"> ",
                    108:                    &link("Previous Directory",$updir), "<BR>";
1.7       fenner    109: #              print "<IMG SRC=???> ",
                    110: #                  &link("Directory-wide diffs", $scriptwhere . '/*'), "<BR>";
1.1       jfieber   111:            } elsif (-d $fullname . "/" . $_) {
                    112:                print "<IMG SRC=\"/icons/dir.gif\"> ",
                    113:                    &link($_ . "/", $scriptwhere . '/' . $_ . '/'), "<BR>";
                    114:            } elsif (s/,v$//) {
1.7       fenner    115: # TODO: add date/time?  How about sorting?
1.1       jfieber   116:                print "<IMG SRC=\"/icons/text.gif\"> ",
                    117:                    &link($_, $scriptwhere . '/' . $_), "<BR>";
                    118:            }
                    119:        }
                    120:        print "</MENU>\n";
1.2       jfieber   121:        print &html_footer;
1.1       jfieber   122:        print "</BODY></HTML>\n";
                    123: } elsif (-f $fullname . ',v') {
1.7       fenner    124:        if ($input{'rev'} =~ /^[\d\.]+$/) {
                    125:                &checkout($fullname, $input{'rev'});
                    126:                exit;
                    127:        }
                    128:        if ($input{'r1'} && $input{'r2'}) {
                    129:                &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    130:                        $input{'r2'}, $input{'tr2'}, $input{'f'});
1.1       jfieber   131:                exit;
                    132:        }
                    133:        open(RCS, "rlog '$fullname'|") || &fatal("500 Internal Error",
                    134:                                                "Failed to spawn rlog");
                    135:        while (<RCS>) {
                    136:            print if ($verbose);
1.8     ! fenner    137:            if (/^branch:\s+([\d\.]+)/) {
        !           138:                $curbranch = $1;
        !           139:            }
1.1       jfieber   140:            if ($symnames) {
                    141:                if (/^\s+([^:]+):\s+([\d\.]+)/) {
                    142:                    $symrev{$1} = $2;
                    143:                    if ($revsym{$2}) {
                    144:                        $revsym{$2} .= ", ";
                    145:                    }
                    146:                    $revsym{$2} .= $1;
                    147:                } else {
                    148:                    $symnames = 0;
                    149:                }
                    150:            } elsif (/^symbolic names/) {
                    151:                $symnames = 1;
                    152:            } elsif (/^-----/) {
                    153:                last;
                    154:            }
                    155:        }
1.7       fenner    156:
                    157:        if ($onlyonbranch = $input{'only_on_branch'}) {
                    158:            ($onlyonbranch = $symrev{$onlyonbranch}) =~ s/\.0\././;
                    159:            ($onlybranchpoint = $onlyonbranch) =~ s/\.\d+$//;
                    160:        }
                    161:
1.1       jfieber   162: # each log entry is of the form:
                    163: # ----------------------------
                    164: # revision 3.7.1.1
                    165: # date: 1995/11/29 22:15:52;  author: fenner;  state: Exp;  lines: +5 -3
                    166: # log info
                    167: # ----------------------------
                    168:        logentry:
                    169:        while (!/^=========/) {
                    170:            $_ = <RCS>;
                    171:            print "R:", $_ if ($verbose);
                    172:            if (/^revision ([\d\.]+)/) {
                    173:                $rev = $1;
                    174:            } elsif (/^========/ || /^----------------------------$/) {
                    175:                next logentry;
                    176:            } else {
                    177:                &fatal("500 Internal Error","Error parsing RCS output: $_");
                    178:            }
                    179:            $_ = <RCS>;
                    180:            print "D:", $_ if ($verbose);
                    181:            if (m|^date:\s+(\d+)/(\d+)/(\d+)\s+(\d+):(\d+):(\d+);\s+author:\s+(\S+);|) {
                    182:                $yr = $1;
                    183:                # damn 2-digit year routines
                    184:                if ($yr > 100) {
                    185:                    $yr -= 1900;
                    186:                }
                    187:                $date{$rev} = &timelocal($6,$5,$4,$3,$2 - 1,$yr);
                    188:                $author{$rev} = $7;
                    189:            } else {
                    190:                &fatal("500 Internal Error", "Error parsing RCS output: $_");
                    191:            }
                    192:            line:
                    193:            while (<RCS>) {
                    194:                print "L:", $_ if ($verbose);
                    195:                next line if (/^branches:\s/);
                    196:                last line if (/^----------------------------$/ || /^=========/);
                    197:                $log{$rev} .= $_;
                    198:            }
                    199:            print "E:", $_ if ($verbose);
                    200:        }
                    201:        close(RCS);
                    202:        print "Done reading RCS file\n" if ($verbose);
                    203: #
                    204: # Sort the revisions into commit-date order.
                    205:        @revorder = sort {$date{$b} <=> $date{$a}} keys %date;
                    206:        print "Done sorting revisions\n" if ($verbose);
                    207: #
                    208: # HEAD is an artificial tag which is simply the highest tag number on the main
1.8     ! fenner    209: # branch, unless there is a branch tag in the RCS file in which case it's the
        !           210: # highest revision on that branch.  Find it by looking through @revorder; it
        !           211: # is the first commit listed on the appropriate branch.
        !           212:        $headrev = $curbranch || "1";
1.1       jfieber   213:        revision:
                    214:        for ($i = 0; $i <= $#revorder; $i++) {
1.8     ! fenner    215:            if ($revorder[$i] =~ /^(\S*)\.\d+$/ && $headrev eq $1) {
1.1       jfieber   216:                if ($revsym{$revorder[$i]}) {
                    217:                    $revsym{$revorder[$i]} .= ", ";
                    218:                }
                    219:                $revsym{$revorder[$i]} .= "HEAD";
                    220:                $symrev{"HEAD"} = $revorder[$i];
                    221:                last revision;
                    222:            }
                    223:        }
                    224:        print "Done finding HEAD\n" if ($verbose);
                    225: #
                    226: # Now that we know all of the revision numbers, we can associate
                    227: # absolute revision numbers with all of the symbolic names, and
                    228: # pass them to the form so that the same association doesn't have
                    229: # to be built then.
                    230: #
                    231: # should make this a case-insensitive sort
                    232:        foreach (sort keys %symrev) {
                    233:            $rev = $symrev{$_};
                    234:            if ($rev =~ /^(\d+(\.\d+)+)\.0\.(\d+)$/) {
1.7       fenner    235:                push(@branchnames, $_);
1.1       jfieber   236:                #
                    237:                # A revision number of A.B.0.D really translates into
                    238:                # "the highest current revision on branch A.B.D".
                    239:                #
                    240:                # If there is no branch A.B.D, then it translates into
                    241:                # the head A.B .
                    242:                #
                    243:                $head = $1;
                    244:                $branch = $3;
                    245:                $regex = $head . "." . $branch;
                    246:                $regex =~ s/\./\./g;
                    247:                #             <
                    248:                #           \____/
                    249:                $rev = $head;
                    250:
                    251:                revision:
                    252:                foreach $r (@revorder) {
                    253:                    if ($r =~ /^${regex}/) {
                    254:                        $rev = $head . "." . $branch;
                    255:                        last revision;
                    256:                    }
                    257:                }
                    258:                $revsym{$rev} .= ", " if ($revsym{$rev});
                    259:                $revsym{$rev} .= $_;
1.8     ! fenner    260:                if ($rev ne $head) {
        !           261:                    $branchpoint{$head} .= ", " if ($branchpoint{$head});
        !           262:                    $branchpoint{$head} .= $_;
        !           263:                }
1.1       jfieber   264:            }
                    265:            $sel .= "<OPTION VALUE=\"${rev}:${_}\">$_\n";
                    266:        }
                    267:        print "Done associating revisions with branches\n" if ($verbose);
1.2       jfieber   268:         print &html_header("CVS log for $where");
1.1       jfieber   269:        ($upwhere = $where) =~ s|[^/]+$||;
                    270:        print "Up to ", &link($upwhere,$scriptname . "/" . $upwhere);
                    271:        print "<BR>\n";
                    272:        print "<A HREF=\"#diff\">Request diff between arbitrary revisions</A>\n";
1.2       jfieber   273:        print "<HR NOSHADE>\n";
1.8     ! fenner    274:        if ($curbranch) {
        !           275:            print "Default branch is ";
        !           276:            print ($revsym{$curbranch} || $curbranch);
        !           277:        } else {
        !           278:            print "No default branch";
        !           279:        }
        !           280:        print "<BR><HR NOSHADE>\n";
1.1       jfieber   281: # The other possible U.I. I can see is to have each revision be hot
                    282: # and have the first one you click do ?r1=foo
                    283: # and since there's no r2 it keeps going & the next one you click
                    284: # adds ?r2=foo and performs the query.
                    285: # I suppose there's no reason we can't try both and see which one
                    286: # people prefer...
                    287:
                    288:        for ($i = 0; $i <= $#revorder; $i++) {
                    289:            $_ = $revorder[$i];
1.7       fenner    290:            ($br = $_) =~ s/\.\d+$//;
                    291:            next if ($onlyonbranch && $br ne $onlyonbranch &&
                    292:                                            $_ ne $onlybranchpoint);
1.4       fenner    293:            print "<a NAME=\"rev$_\"></a>";
                    294:            foreach $sym (split(", ", $revsym{$_})) {
                    295:                print "<a NAME=\"$sym\"></a>";
                    296:            }
                    297:            if ($revsym{$br} && !$nameprinted{$br}) {
                    298:                foreach $sym (split(", ", $revsym{$br})) {
                    299:                    print "<a NAME=\"$sym\"></a>";
                    300:                }
                    301:                $nameprinted{$br}++;
                    302:            }
                    303:            print "\n";
1.1       jfieber   304:            print "<A HREF=\"$scriptwhere?rev=$_\"><b>$_</b></A>";
                    305:            if (/^1\.1\.1\.\d+$/) {
                    306:                print " <i>(vendor branch)</i>";
                    307:            }
                    308:            print " <i>" . &ctime($date{$_}) . "</i> by ";
                    309:            print "<i>" . $author{$_} . "</i>\n";
                    310:            if ($revsym{$_}) {
                    311:                print "<BR>CVS Tags: <b>$revsym{$_}</b>";
                    312:            }
1.4       fenner    313:            if ($revsym{$br})  {
1.1       jfieber   314:                if ($revsym{$_}) {
                    315:                    print "; ";
                    316:                } else {
                    317:                    print "<BR>";
                    318:                }
1.8     ! fenner    319:                print "Branch: <b>$revsym{$br}</b>\n";
        !           320:            }
        !           321:            if ($branchpoint{$_}) {
        !           322:                if ($revsym{$br} || $revsym{$_}) {
        !           323:                    print "; ";
        !           324:                } else {
        !           325:                    print "<BR>";
        !           326:                }
        !           327:                print "Branch point for: <b>$branchpoint{$_}</b>\n";
1.1       jfieber   328:            }
                    329:            # Find the previous revision on this branch.
                    330:            @prevrev = split(/\./, $_);
                    331:            if (--$prevrev[$#prevrev] == 0) {
                    332:                # If it was X.Y.Z.1, just make it X.Y
                    333:                if ($#prevrev > 1) {
                    334:                    pop(@prevrev);
                    335:                    pop(@prevrev);
                    336:                } else {
                    337:                    # It was rev 1.1 (XXX does CVS use revisions
                    338:                    # greater than 1.x?)
                    339:                    if ($prevrev[0] != 1) {
                    340:                        print "<i>* I can't figure out the previous revision! *</i>\n";
                    341:                    }
                    342:                }
                    343:            }
                    344:            if ($prevrev[$#prevrev] != 0) {
                    345:                $prev = join(".", @prevrev);
1.7       fenner    346:                print "<BR><A HREF=\"${scriptwhere}.diff?r1=$prev";
1.1       jfieber   347:                print "&r2=$_\">Diffs to $prev</A>\n";
                    348:                #
                    349:                # Plus, if it's on a branch, and it's not a vendor branch,
                    350:                # offer to diff with the immediately-preceding commit if it
                    351:                # is not the previous revision as calculated above
                    352:                # and if it is on the HEAD (or at least on a higher branch)
                    353:                # (e.g. change gets committed and then brought
                    354:                # over to -stable)
                    355:                if (!/^1\.1\.1\.\d+$/ && ($i != $#revorder) &&
                    356:                                        ($prev ne $revorder[$i+1])) {
                    357:                    @tmp1 = split(/\./, $revorder[$i+1]);
                    358:                    @tmp2 = split(/\./, $_);
                    359:                    if ($#tmp1 < $#tmp2) {
1.7       fenner    360:                        print "; <A HREF=\"${scriptwhere}.diff?r1=$revorder[$i+1]";
1.1       jfieber   361:                        print "&r2=$_\">Diffs to $revorder[$i+1]</A>\n";
                    362:                    }
                    363:                }
                    364:            }
                    365:            print "<PRE>\n";
1.7       fenner    366:            print &htmlify($log{$_}, 1);
1.2       jfieber   367:            print "</PRE><HR NOSHADE>\n";
1.1       jfieber   368:        }
                    369:        print "<A NAME=diff>\n";
                    370:        print "This form allows you to request diff's between any two\n";
                    371:        print "revisions of a file.  You may select a symbolic revision\n";
                    372:        print "name using the selection box or you may type in a numeric\n";
                    373:        print "name using the type-in text box.\n";
                    374:        print "</A><P>\n";
1.7       fenner    375:        print "<FORM METHOD=\"GET\" ACTION=\"${scriptwhere}.diff\">\n";
1.1       jfieber   376:        print "Diffs between \n";
                    377:        print "<SELECT NAME=\"r1\">\n";
                    378:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    379:        print $sel;
                    380:        print "</SELECT>\n";
                    381:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr1\" VALUE=\"$revorder[$#revorder]\">\n";
                    382:        print " and \n";
                    383:        print "<SELECT NAME=\"r2\">\n";
                    384:        print "<OPTION VALUE=\"text\" SELECTED>Use Text Field\n";
                    385:        print $sel;
                    386:        print "</SELECT>\n";
                    387:        print "<INPUT TYPE=\"TEXT\" NAME=\"tr2\" VALUE=\"$revorder[0]\">\n";
                    388:        print "<BR><INPUT TYPE=RADIO NAME=\"f\" VALUE=u CHECKED>Unidiff<br>\n";
                    389:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=c>Context diff<br>\n";
1.7       fenner    390:        print "<INPUT TYPE=RADIO NAME=\"f\" VALUE=s>Side-by-Side<br>\n";
1.1       jfieber   391:        print "<INPUT TYPE=SUBMIT VALUE=\"Get Diffs\">\n";
                    392:        print "</FORM>\n";
1.7       fenner    393:        print "<HR noshade>\n";
                    394:        print "<A name=branch>\n";
                    395:        print "You may select to see revision information from only\n";
                    396:        print "a single branch.\n";
                    397:        print "</A><P>\n";
                    398:        print "<FORM METHOD=\"GET\" ACTION=\"$scriptwhere\">\n";
                    399:        print "Branch: \n";
                    400:        print "<SELECT NAME=\"only_on_branch\">\n";
                    401:        foreach (sort @branchnames) {
                    402:                print "<OPTION>${_}\n";
                    403:        }
                    404:        print "</SELECT>\n";
                    405:        print "<INPUT TYPE=SUBMIT VALUE=\"View Branch\">\n";
                    406:        print "</FORM>\n";
1.2       jfieber   407:         print &html_footer;
1.1       jfieber   408:        print "</BODY></HTML>\n";
1.7       fenner    409: } elsif ($fullname =~ s/\.diff$// && -f $fullname . ",v" &&
                    410:                                $input{'r1'} && $input{'r2'}) {
                    411:        &dodiff($fullname, $input{'r1'}, $input{'tr1'},
                    412:                $input{'r2'}, $input{'tr2'}, $input{'f'});
                    413:        exit;
                    414: } elsif (0 && (@files = &safeglob($fullname . ",v"))) {
                    415:        print "Content-type: text/plain\n\n";
                    416:        print "You matched the following files:\n";
                    417:        print join("\n", @files);
                    418:        # Find the tags from each file
                    419:        # Display a form offering diffs between said tags
1.1       jfieber   420: } else {
1.5       fenner    421:        # Assume it's a module name with a potential path following it.
1.7       fenner    422:        ($module = $where) =~ s|/.*||;
1.5       fenner    423:        $xtra = $&;
1.4       fenner    424:        # Is there an indexed version of modules?
                    425:        if (open(MODULES, "$cvsroot/CVSROOT/modules")) {
                    426:                while (<MODULES>) {
1.8     ! fenner    427:                        if (/^(\S+)\s+(\S+)/o && $module eq $1
        !           428:                                && -d "${cvsroot}/$2" && $module ne $2) {
        !           429:                                &redirect($scriptname . '/' . $2 . $xtra);
1.4       fenner    430:                        }
                    431:                }
                    432:        }
1.7       fenner    433:        &fatal("404 Not Found","$where: no such file or directory");
1.1       jfieber   434: }
                    435:
                    436: sub htmlify {
1.7       fenner    437:        local($string, $pr) = @_;
1.1       jfieber   438:
1.2       jfieber   439:        $string =~ s/&/&amp;/g;
1.1       jfieber   440:        $string =~ s/</&lt;/g;
                    441:        $string =~ s/>/&gt;/g;
                    442:
1.7       fenner    443:        if ($pr) {
                    444:                $string =~ s|\bpr(\W+[a-z]+/\W*)(\d+)|<A HREF=/cgi/query-pr.cgi?pr=$2>$&</A>|ig;
                    445:        }
                    446:
1.1       jfieber   447:        $string;
                    448: }
                    449:
                    450: sub link {
                    451:        local($name, $where) = @_;
                    452:
                    453:        "<A HREF=\"$where\">$name</A>\n";
                    454: }
                    455:
                    456: sub revcmp {
                    457:        local($rev1, $rev2) = @_;
                    458:        local(@r1) = split(/\./, $rev1);
                    459:        local(@r2) = split(/\./, $rev2);
                    460:        local($a,$b);
                    461:
1.5       fenner    462:        while (($a = shift(@r1)) && ($b = shift(@r2))) {
1.1       jfieber   463:            if ($a != $b) {
                    464:                return $a <=> $b;
                    465:            }
                    466:        }
                    467:        if (@r1) { return 1; }
                    468:        if (@r2) { return -1; }
                    469:        return 0;
                    470: }
                    471:
                    472: sub fatal {
                    473:        local($errcode, $errmsg) = @_;
                    474:        print "Status: $errcode\n";
1.7       fenner    475:        print &html_header("Error");
                    476: #      print "Content-type: text/html\n";
                    477: #      print "\n";
                    478: #      print "<HTML><HEAD><TITLE>Error</TITLE></HEAD>\n";
                    479: #      print "<BODY>Error: $errmsg</BODY></HTML>\n";
                    480:        print "Error: $errmsg\n";
                    481:        print &html_footer;
1.4       fenner    482:        exit(1);
                    483: }
                    484:
                    485: sub redirect {
                    486:        local($url) = @_;
                    487:        print "Status: 301 Moved\n";
                    488:        print "Location: $url\n";
1.7       fenner    489:        print &html_header("Moved");
                    490: #      print "Content-type: text/html\n";
                    491: #      print "\n";
                    492: #      print "<HTML><HEAD><TITLE>Moved</TITLE></HEAD>\n";
                    493: #      print "<BODY>This document is located <A HREF=$url>here</A>.</BODY></HTML>\n";
                    494:        print "This document is located <A HREF=$url>here</A>.\n";
                    495:        print &html_footer;
1.1       jfieber   496:        exit(1);
1.7       fenner    497: }
                    498:
                    499: sub safeglob {
                    500:        local($filename) = @_;
                    501:        local($dirname);
                    502:        local(@results);
                    503:
                    504:        ($dirname = $filename) =~ s|/[^/]+$||;
                    505:        $filename =~ s|.*/||;
                    506:
                    507:        if (opendir(DIR, $dirname)) {
                    508:                $glob = $filename;
                    509:        #       transform filename from glob to regex.  Deal with:
                    510:        #       [, {, ?, * as glob chars
                    511:        #       make sure to escape all other regex chars
1.8     ! fenner    512:                $glob =~ s/([\.\(\)\|\+])/\\$1/g;
1.7       fenner    513:                $glob =~ s/\*/.*/g;
                    514:                $glob =~ s/\?/./g;
1.8     ! fenner    515:                $glob =~ s/{([^}]+)}/($t = $1) =~ s-,-|-g; "($t)"/eg;
1.7       fenner    516:                foreach (readdir(DIR)) {
                    517:                        if (/^${glob}$/) {
                    518:                                push(@results, $dirname . "/" .$_);
                    519:                        }
                    520:                }
                    521:        }
                    522:
                    523:        @results;
                    524: }
1.8     ! fenner    525:
1.7       fenner    526: sub checkout {
                    527:        local($fullname, $rev) = @_;
                    528:
                    529:        open(RCS, "co -p$rev '$fullname' 2>&1 |") ||
                    530:            &fail("500 Internal Error", "Couldn't co: $!");
                    531: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  standard output
1.8     ! fenner    532: # or
        !           533: # /home/ncvs/src/sys/netinet/igmp.c,v  -->  stdout
1.7       fenner    534: # revision 1.1.1.2
                    535: # /*
                    536:        $_ = <RCS>;
1.8     ! fenner    537:        if (/^(\S+),v\s+-->\s+st(andar)?d ?out(put)?\s*$/o && $1 eq $fullname) {
1.7       fenner    538:            # As expected
                    539:        } else {
                    540:            &fatal("500 Internal Error",
                    541:                "Unexpected output from co: $_");
                    542:        }
                    543:        $_ = <RCS>;
                    544:        if (/^revision\s+$rev\s*$/) {
                    545:            # As expected
                    546:        } else {
                    547:            &fatal("500 Internal Error",
                    548:                "Unexpected output from co: $_");
                    549:        }
                    550:        $| = 1;
                    551:        print "Content-type: text/plain\n\n";
                    552:        print <RCS>;
                    553:        close(RCS);
                    554: }
                    555:
                    556: sub dodiff {
                    557:        local($fullname, $r1, $tr1, $r2, $tr2, $f) = @_;
                    558:
                    559:        if ($r1 =~ /([^:]+)(:(.+))?/) {
                    560:            $rev1 = $1;
                    561:            $sym1 = $3;
                    562:        }
                    563:        if ($rev1 eq 'text') {
                    564:            $rev1 = $tr1;
                    565:        }
                    566:        if ($r2 =~ /([^:]+)(:(.+))?/) {
                    567:            $rev2 = $1;
                    568:            $sym2 = $3;
                    569:        }
                    570:        if ($rev2 eq 'text') {
                    571:            $rev2 = $tr2;
                    572:        }
                    573:        if (!($rev1 =~ /^[\d\.]+$/) || !($rev2 =~ /^[\d\.]+$/)) {
                    574:            &fatal("404 Not Found",
                    575:                    "Malformed query \"$ENV{'QUERY_STRING'}\"");
                    576:        }
                    577: #
                    578: # rev1 and rev2 are now both numeric revisions.
                    579: # Thus we do a DWIM here and swap them if rev1 is after rev2.
                    580: # XXX should we warn about the fact that we do this?
                    581:        if (&revcmp($rev1,$rev2) > 0) {
                    582:            ($tmp1, $tmp2) = ($rev1, $sym1);
                    583:            ($rev1, $sym1) = ($rev2, $sym2);
                    584:            ($rev2, $sym2) = ($tmp1, $tmp2);
                    585:        }
                    586: #
                    587: #      XXX Putting '-p' here is a personal preference
                    588:        if ($f eq 'c') {
                    589:            $difftype = '-p -c';
                    590:            $diffname = "Context diff";
                    591:        } elsif ($f eq 's') {
                    592:            $difftype = '--side-by-side --width=164';
                    593:            $diffname = "Side by Side";
                    594:        } else {
                    595:            $difftype = '-p -u';
                    596:            $diffname = "Unidiff";
                    597:        }
                    598: # XXX should this just be text/plain
                    599: # or should it have an HTML header and then a <pre>
                    600:        print "Content-type: text/plain\n\n";
                    601:        open(RCSDIFF, "rcsdiff $difftype -r$rev1 -r$rev2 '$fullname' 2>&1 |") ||
                    602:            &fail("500 Internal Error", "Couldn't rcsdiff: $!");
                    603: #
                    604: #===================================================================
                    605: #RCS file: /home/ncvs/src/sys/netinet/tcp_output.c,v
                    606: #retrieving revision 1.16
                    607: #retrieving revision 1.17
                    608: #diff -c -r1.16 -r1.17
                    609: #*** /home/ncvs/src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    610: #--- /home/ncvs/src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17
                    611: #
                    612: # Ideas:
                    613: # - nuke the stderr output if it's what we expect it to be
                    614: # - Add "no differences found" if the diff command supplied no output.
                    615: #
                    616: #*** src/sys/netinet/tcp_output.c     1995/11/03 22:08:08     1.16
                    617: #--- src/sys/netinet/tcp_output.c     1995/12/05 17:46:35     1.17 RELENG_2_1_0
                    618: # (bogus example, but...)
                    619: #
                    620:        if ($difftype eq '-u') {
                    621:            $f1 = '---';
                    622:            $f2 = '\+\+\+';
                    623:        } else {
                    624:            $f1 = '\*\*\*';
                    625:            $f2 = '---';
                    626:        }
                    627:        while (<RCSDIFF>) {
                    628:            if (m|^$f1 $cvsroot|o) {
                    629:                s|$cvsroot/||o;
                    630:                if ($sym1) {
                    631:                    chop;
                    632:                    $_ .= " " . $sym1 . "\n";
                    633:                }
                    634:            } elsif (m|^$f2 $cvsroot|o) {
                    635:                s|$cvsroot/||o;
                    636:                if ($sym2) {
                    637:                    chop;
                    638:                    $_ .= " " . $sym2 . "\n";
                    639:                }
                    640:            }
                    641:            print $_;
                    642:        }
                    643:        close(RCSDIFF);
1.1       jfieber   644: }

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