2 # Handles xml-rpc requests from arbitrary clients. Each is a call to a
3 # function in a Webmin module.
4 # XXX special function for file transfer?
5 # XXX command-line mode
7 if (!$ENV{'GATEWAY_INTERFACE'}) {
10 $ENV{'WEBMIN_CONFIG'} ||= "/etc/webmin";
11 $ENV{'WEBMIN_VAR'} ||= "/var/webmin";
12 if ($0 =~ /^(.*\/)[^\/]+$/) {
16 $0 = "$pwd/xmlrpc.pl";
18 $< == 0 || die "xmlrpc.pl must be run as root";
23 $force_lang = $default_lang;
24 $trust_unknown_referers = 1;
26 $main::error_must_die = 1;
28 # Can this user make remote calls?
30 %access = &get_module_acl();
31 if ($access{'rpc'} == 0 || $access{'rpc'} == 2 &&
32 $base_remote_user ne 'admin' && $base_remote_user ne 'root' &&
33 $base_remote_user ne 'sysadm') {
34 &error_exit(1, "Invalid user for RPC");
38 # Load the XML parser module
39 eval "use XML::Parser";
41 &error_exit(2, "XML::Parser Perl module is not installed");
54 my $clen = $ENV{'CONTENT_LENGTH'};
55 while(length($rawxml) < $clen) {
57 my $got = read(STDIN, $buf, $clen - length($rawxml));
59 &error_exit(3, "Failed to read $clen bytes");
66 my $parser = new XML::Parser('Style' => 'Tree');
68 eval { $xml = $parser->parse($rawxml); };
70 &error_exit(4, "Invalid XML : $@");
73 # Look for the method calls, and invoke each one
74 my $xmlrv = "<?xml version=\"1.0\" encoding=\"$default_charset\"?>\n";
75 foreach my $mc (&find_xmls("methodCall", $xml)) {
76 # Find the method name and module
77 my ($mn) = &find_xmls("methodName", $mc);
79 my ($mod, $func) = $mn->[1]->[2] =~ /::/ ?
80 split(/::/, $mn->[1]->[2]) :
81 $mn->[1]->[2] =~ /\./ ?
82 split(/\./, $mn->[1]->[2]) :
83 (undef, $mn->[1]->[2]);
86 my ($params) = &find_xmls("params", $mc);
87 my @params = &find_xmls("param", $params);
89 foreach my $p (@params) {
90 my ($value) = &find_xmls("value", $p, 1);
91 my $perlv = &parse_xml_value($value);
95 # Require the module, if needed
97 if (!$done_require_module{$mod}) {
98 if (!&foreign_check($mod)) {
100 "Webmin module $mod does not exist");
102 eval { &foreign_require($mod, $lib); };
104 $xmlrv .= &make_error_xml(6,
105 "Failed to load module $mod : $@");
113 if ($func eq "eval") {
114 # Execute some Perl code
115 @rv = eval "$args[0]";
117 $xmlrv .= &make_error_xml(8, "Eval failed : $@");
121 # A real function call
122 eval { @rv = &foreign_call($mod, $func, @args); };
124 $xmlrv .= &make_error_xml(7,
125 "Function call $func failed : $@");
131 $xmlrv .= "<methodResponse>\n";
132 $xmlrv .= "<params>\n";
133 $xmlrv .= "<param><value>\n";
135 $xmlrv .= &encode_xml_value($rv[0]);
138 $xmlrv .= &encode_xml_value(\@rv);
140 $xmlrv .= "</value></param>\n";
141 $xmlrv .= "</params>\n";
142 $xmlrv .= "</methodResponse>\n";
145 # Flush all modified files, as some APIs require a call to this function
148 # Return results to caller
149 if (!$command_line) {
150 print "Content-type: text/xml\n";
151 print "Content-length: ",length($xmlrv),"\n";
156 # parse_xml_value(&value)
157 # Given a <value> object, returns a Perl scalar, hash ref or array ref for
162 my ($scalar) = &find_xmls([ "int", "i4", "boolean", "string", "double" ],
164 my ($date) = &find_xmls([ "dateTime.iso8601" ], $value, 1);
165 my ($base64) = &find_xmls("base64", $value, 1);
166 my ($struct) = &find_xmls("struct", $value, 1);
167 my ($array) = &find_xmls("array", $value, 1);
169 return $scalar->[1]->[2];
172 # Need to decode date
177 return &decode_base64($base64->[1]->[2]);
180 # Parse member names and values
182 foreach my $member (&find_xmls("member", $struct, 1)) {
183 my ($name) = &find_xmls("name", $member, 1);
184 my ($value) = &find_xmls("value", $member, 1);
185 my $perlv = &parse_xml_value($value);
186 $rv{$name->[1]->[2]} = $perlv;
193 my ($data) = &find_xmls("data", $array, 1);
194 foreach my $value (&find_xmls("value", $data, 1)) {
195 my $perlv = &parse_xml_value($value);
201 # Fallback - just a string directly in the value
202 return $value->[1]->[2];
206 # encode_xml_value(string|int|&hash|&array)
207 # Given a Perl object, returns XML lines representing it for return to a caller
211 if (ref($perlv) eq "ARRAY") {
212 # Convert to array XML format
213 my $xmlrv = "<array>\n<data>\n";
214 foreach my $v (@$perlv) {
215 $xmlrv .= "<value>\n";
216 $xmlrv .= &encode_xml_value($v);
217 $xmlrv .= "</value>\n";
219 $xmlrv .= "</data>\n</array>\n";
222 elsif (ref($perlv) eq "HASH") {
223 # Convert to struct XML format
224 my $xmlrv = "<struct>\n";
225 foreach my $k (keys %$perlv) {
226 $xmlrv .= "<member>\n";
227 $xmlrv .= "<name>".&html_escape($k)."</name>\n";
228 $xmlrv .= "<value>\n";
229 $xmlrv .= &encode_xml_value($perlv->{$k});
230 $xmlrv .= "</value>\n";
231 $xmlrv .= "</member>\n";
233 $xmlrv .= "</struct>\n";
236 elsif ($perlv =~ /^\-?\d+$/) {
238 return "<int>$perlv</int>\n";
240 elsif ($perlv =~ /^\-?\d*\.\d+$/) {
242 return "<double>$perlv</double>\n";
244 elsif ($perlv =~ /^[\40-\377]*$/) {
246 return "<string>".&html_escape($perlv)."</string>\n";
249 # Contains non-printable characters, so return as base64
250 return "<base64>".&encode_base64($perlv)."</base64>\n";
254 # find_xmls(name|&names, &config, [depth])
255 # Returns the XMLs object with some name, by recursively searching the XML
258 local ($name, $conf, $depth) = @_;
259 local @m = ref($name) ? @$name : ( $name );
260 if (&indexoflc($conf->[0], @m) >= 0) {
265 # Need to recursively scan all sub-elements, except for the first
266 # which is just the tags of this element
267 if (defined($depth) && !$depth) {
268 # Gone too far .. stop
272 local $list = $conf->[1];
274 for($i=1; $i<@$list; $i+=2) {
275 local @srv = &find_xmls($name,
276 [ $list->[$i], $list->[$i+1] ],
277 defined($depth) ? $depth-1 : undef);
285 # error_exit(code, message)
286 # Output an XML error message
289 my ($code, $msg) = @_;
293 # Construct error XML
294 my $xmlerr = "<?xml version=\"1.0\"?>\n";
295 $xmlerr .= &make_error_xml($code, $msg);
298 if (!$command_line) {
299 print "Content-type: text/xml\n";
300 print "Content-length: ",length($xmlerr),"\n";
304 exit($command_line ? $code : 0);
309 my ($code, $msg) = @_;
310 $xmlerr .= "<methodResponse>\n";
311 $xmlerr .= "<fault>\n";
312 $xmlerr .= "<value>\n";
313 $xmlerr .= &encode_xml_value( { 'faultCode' => $code,
314 'faultString' => $msg });
315 $xmlerr .= "</value>\n";
316 $xmlerr .= "</fault>\n";
317 $xmlerr .= "</methodResponse>\n";