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diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 7e477af9567cff322d18fc9a1fbfe507732418dc..3c879b88fee39abc8a40cc1ff8e9e6f2652a1e5c 100755 (executable)
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
'double' => 32
);
+# Used to set the maximum load that we will still respond to gitweb queries.
+# If server load exceed this value then return "503 server busy" error.
+# If gitweb cannot determined server load, it is taken to be 0.
+# Leave it undefined (or set to 'undef') to turn off load checking.
+our $maxload = 300;
+
# You define site-wide feature defaults here; override them with
# $GITWEB_CONFIG as necessary.
our %feature = (
do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
}
+# Get loadavg of system, to compare against $maxload.
+# Currently it requires '/proc/loadavg' present to get loadavg;
+# if it is not present it returns 0, which means no load checking.
+sub get_loadavg {
+ if( -e '/proc/loadavg' ){
+ open my $fd, '<', '/proc/loadavg'
+ or return 0;
+ my @load = split(/\s+/, scalar <$fd>);
+ close $fd;
+
+ # The first three columns measure CPU and IO utilization of the last one,
+ # five, and 10 minute periods. The fourth column shows the number of
+ # currently running processes and the total number of processes in the m/n
+ # format. The last column displays the last process ID used.
+ return $load[0] || 0;
+ }
+ # additional checks for load average should go here for things that don't export
+ # /proc/loadavg
+
+ return 0;
+}
+
# version of the core git binary
our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
$number_of_git_cmds++;
$projects_list ||= $projectroot;
+if (defined $maxload && get_loadavg() > $maxload) {
+ die_error(503, "The load average on the server is too high");
+}
+
# ======================================================================
# input validation and dispatch
# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
sub to_utf8 {
my $str = shift;
+ return undef unless defined $str;
if (utf8::valid($str)) {
utf8::decode($str);
return $str;
# correct, but quoted slashes look too horrible in bookmarks
sub esc_param {
my $str = shift;
+ return undef unless defined $str;
$str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
$str =~ s/ /\+/g;
return $str;
# quote unsafe chars in whole URL, so some charactrs cannot be quoted
sub esc_url {
my $str = shift;
+ return undef unless defined $str;
$str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
$str =~ s/\+/%2B/g;
$str =~ s/ /\+/g;
my $str = shift;
my %opts = @_;
+ return undef unless defined $str;
+
$str = to_utf8($str);
$str = $cgi->escapeHTML($str);
if ($opts{'-nbsp'}) {
my $str = shift;
my %opts = @_;
+ return undef unless defined $str;
+
$str = to_utf8($str);
$str = $cgi->escapeHTML($str);
if ($opts{'-nbsp'}) {
$str =~ m/^(.*?)($begre)$/;
my ($lead, $body) = ($1, $2);
if (length($lead) > 4) {
- $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
$lead = " ...";
}
return "$lead$body";
$str =~ m/^(.*?)($begre)$/;
my ($mid, $right) = ($1, $2);
if (length($mid) > 5) {
- $left =~ s/&[^;]*$//;
- $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
$mid = " ... ";
}
return "$left$mid$right";
my $body = $1;
my $tail = $2;
if (length($tail) > 4) {
- $body =~ s/&[^;]*$//;
$tail = "... ";
}
return "$body$tail";
print "</head>\n" .
"<body>\n";
- if (-f $site_header) {
+ if (defined $site_header && -f $site_header) {
insert_file($site_header);
}
print "</div>\n"; # class="page_footer"
}
- if (-f $site_footer) {
+ if (defined $site_footer && -f $site_footer) {
insert_file($site_footer);
}
print qq!<script type="text/javascript" src="$javascript"></script>\n!;
- if ($action eq 'blame_incremental') {
+ if (defined $action &&
+ $action eq 'blame_incremental') {
print qq!<script type="text/javascript">\n!.
qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
qq! "!. href() .qq!");\n!.
"</html>";
}
-# die_error(<http_status_code>, <error_message>)
+# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
# Example: die_error(404, 'Hash not found')
# By convention, use the following status codes (as defined in RFC 2616):
# 400: Invalid or missing CGI parameters, or
# 500: The server isn't configured properly, or
# an internal error occurred (e.g. failed assertions caused by bugs), or
# an unknown error occurred (e.g. the git binary died unexpectedly).
+# 503: The server is currently unavailable (because it is overloaded,
+# or down for maintenance). Generally, this is a temporary state.
sub die_error {
my $status = shift || 500;
- my $error = shift || "Internal server error";
-
- my %http_responses = (400 => '400 Bad Request',
- 403 => '403 Forbidden',
- 404 => '404 Not Found',
- 500 => '500 Internal Server Error');
+ my $error = esc_html(shift) || "Internal Server Error";
+ my $extra = shift;
+
+ my %http_responses = (
+ 400 => '400 Bad Request',
+ 403 => '403 Forbidden',
+ 404 => '404 Not Found',
+ 500 => '500 Internal Server Error',
+ 503 => '503 Service Unavailable',
+ );
git_header_html($http_responses{$status});
print <<EOF;
<div class="page_body">
<br /><br />
$status - $error
<br />
-</div>
EOF
+ if (defined $extra) {
+ print "<hr />\n" .
+ "$extra\n";
+ }
+ print "</div>\n";
+
git_footer_html();
exit;
}
}
sub print_local_time {
+ print format_local_time(@_);
+}
+
+sub format_local_time {
+ my $localtime = '';
my %date = @_;
if ($date{'hour_local'} < 6) {
- printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
+ $localtime .= sprintf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
$date{'hour_local'}, $date{'minute_local'}, $date{'tz_local'});
} else {
- printf(" (%02d:%02d %s)",
+ $localtime .= sprintf(" (%02d:%02d %s)",
$date{'hour_local'}, $date{'minute_local'}, $date{'tz_local'});
}
+
+ return $localtime;
}
# Outputs the author name and date in long form
# print 'sort by' <th> element, generating 'sort by $name' replay link
# if that order is not selected
sub print_sort_th {
+ print format_sort_th(@_);
+}
+
+sub format_sort_th {
my ($name, $order, $header) = @_;
+ my $sort_th = "";
$header ||= ucfirst($name);
if ($order eq $name) {
- print "<th>$header</th>\n";
+ $sort_th .= "<th>$header</th>\n";
} else {
- print "<th>" .
- $cgi->a({-href => href(-replay=>1, order=>$name),
- -class => "header"}, $header) .
- "</th>\n";
+ $sort_th .= "<th>" .
+ $cgi->a({-href => href(-replay=>1, order=>$name),
+ -class => "header"}, $header) .
+ "</th>\n";
}
+
+ return $sort_th;
}
sub git_project_list_body {
}
git_header_html();
- if (-f $home_text) {
+ if (defined $home_text && -f $home_text) {
print "<div class=\"index_include\">\n";
insert_file($home_text);
print "</div>\n";