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Annotation of cvsweb/cvsweb.cgi, Revision 1.7

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

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