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Annotation of cvsweb/cvsweb.cgi, Revision 1.11

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

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