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Code

common input validation to allow passing of textual hash id's

This commit is contained in:
Kay Sievers 2005-09-03 14:50:33 +02:00
parent 76a8323ac7
commit c91da262b3
1 changed files with 37 additions and 41 deletions
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78
gitweb.cgi
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@ -43,7 +43,7 @@ my $projects_list = "index/index.aux";
# input validation and dispatch
my $action = $cgi->param('a');
if (defined $action) {
if ($action =~ m/[^0-9a-zA-Z\.\-_]+/) {
if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
undef $action;
die_error(undef, "Invalid action parameter.");
}
@ -58,7 +58,7 @@ if (defined $action) {
my $order = $cgi->param('o');
if (defined $order) {
if ($order =~ m/[^a-zA-Z0-9_]/) {
if ($order =~ m/[^0-9a-zA-Z_]/) {
undef $order;
die_error(undef, "Invalid order parameter.");
}
@ -66,13 +66,9 @@ if (defined $order) {
my $project = $cgi->param('p');
if (defined $project) {
if ($project =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
undef $project;
die_error(undef, "Non-canonical project parameter.");
}
if ($project =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~]/) {
undef $project;
die_error(undef, "Invalid character in project parameter.");
$project = validate_input($project);
if (!defined($project)) {
die_error(undef, "Invalid project parameter.");
}
if (!(-d "$projectroot/$project")) {
undef $project;
@ -91,54 +87,39 @@ if (defined $project) {
my $file_name = $cgi->param('f');
if (defined $file_name) {
if ($file_name =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
undef $file_name;
die_error(undef, "Non-canonical file parameter.");
}
if ($file_name =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~\:\!]/) {
undef $file_name;
die_error(undef, "Invalid character in file parameter.");
$file_name = validate_input($file_name);
if (!defined($file_name)) {
die_error(undef, "Invalid file parameter.");
}
}
my $hash = $cgi->param('h');
if (defined $hash) {
if (!($hash =~ m/^[0-9a-fA-F]{40}$/)) {
if ($hash =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
undef $hash;
die_error(undef, "Non-canonical hash parameter.");
}
if ($hash =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~\:\!]/) {
undef $hash;
die_error(undef, "Invalid character in hash parameter.");
}
# replace branch-name with hash
my $branchlist = git_read_refs("refs/heads");
foreach my $entry (@$branchlist) {
my %branch = %$entry;
if ($branch{'name'} eq $hash) {
$hash = $branch{'id'};
last;
}
}
$hash = validate_input($hash);
if (!defined($hash)) {
die_error(undef, "Invalid hash parameter.");
}
}
my $hash_parent = $cgi->param('hp');
if (defined $hash_parent && !($hash_parent =~ m/^[0-9a-fA-F]{40}$/)) {
undef $hash_parent;
die_error(undef, "Invalid hash_parent parameter.");
if (defined $hash_parent) {
$hash_parent = validate_input($hash_parent);
if (!defined($hash_parent)) {
die_error(undef, "Invalid hash parent parameter.");
}
}
my $hash_base = $cgi->param('hb');
if (defined $hash_base && !($hash_base =~ m/^[0-9a-fA-F]{40}$/)) {
undef $hash_base;
die_error(undef, "Invalid parent hash parameter.");
if (defined $hash_base) {
$hash_base = validate_input($hash_base);
if (!defined($hash_base)) {
die_error(undef, "Invalid hash base parameter.");
}
}
my $page = $cgi->param('pg');
if (defined $page) {
if ($page =~ m/^[^0-9]+$/) {
if ($page =~ m/[^0-9]$/) {
undef $page;
die_error(undef, "Invalid page parameter.");
}
@ -153,6 +134,21 @@ if (defined $searchtext) {
$searchtext = quotemeta $searchtext;
}
sub validate_input {
my $input = shift;
if ($input =~ m/^[0-9a-fA-F]{40}$/) {
return $input;
}
if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
return undef;
}
if ($input =~ m/[^a-zA-Z0-9_\.\/\-\+\#\~]/) {
return undef;
}
return $input;
}
if (!defined $action || $action eq "summary") {
git_summary();
exit;