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<?php
/*
* meta.inc
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2008 Shrew Soft Inc
* Copyright (c) 2008-2016 Rubicon Communications, LLC (Netgate)
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* The meta data format used in pfSense is denoted using markers
* followed by the appropriate value or value pair. All markers
* are prefixed with a ##| sequence. The + suffix is used to
* denote the beginning of a tag block followed by the tag name.
* A - suffix is used to denote the end of a tag block. Values
* are denoted using the * suffix and can optionally be expressed
* as a key value pair. An example of a metadata tag block ...
*
* ###|+INFO
* ###|*BLAH
* ###|*TEXT=SOME TEXT
* ###|-INFO
*
* After calling read_file_metadata, the result array would
* contain the following information ...
*
* metadata['<filename>']['INFO']['BLAH'][0] == true
* metadata['<filename>']['INFO']['TEXT'][0] == "SOME TEXT"
*
* NOTE: All statements must be at the beginning of a line and
* contiguous for a tag. The example shown above would not be
* processed due to the extra ' * ' comment chars.
*
*/
/*
* locate php files for a given path
*/
function list_phpfiles($path, & $found) {
if (!is_array($found)) {
$found = array();
}
$dir = opendir($path);
if (!$dir) {
printf(gettext("list_phpfiles: unable to examine path %s") . "\n", $path);
return;
}
while ($fname = readdir($dir)) {
if ($fname == "." || $fname == ".." || $fname[0] == '.') {
continue;
}
if (fnmatch('*.php', $fname)) {
$found[] = $fname;
}
}
}
/*
* read embedded metadata from a file
*/
function read_file_metadata($fpath, & $metadata, $taglist = false) {
if (!is_array($metadata)) {
$metadata = array();
}
if ($taglist) {
$taglist = explode(",", $taglist);
}
$fname = $fpath;
$slash = strrpos($fname, "/");
if ($slash) {
$fname = substr($fname, $slash + 1);
}
$fdata = @file_get_contents($fpath);
if (!$fdata) {
printf(gettext("unable to read %s") . "\n", $fpath);
continue;
}
$offset = 0;
$tags = array();
while (true) {
$tagbeg_off = stripos($fdata, "##|+", $offset);
if ($tagbeg_off === false) {
break;
}
$tagbeg_trm = stripos($fdata, "\n", $tagbeg_off);
if ($tagbeg_trm === false) {
break;
}
$tagend_off = stripos($fdata, "##|-", $tagbeg_trm);
if ($tagend_off === false) {
break;
}
$tagend_trm = stripos($fdata, "\n", $tagend_off);
if ($tagend_trm === false) {
break;
}
$tagbeg_len = $tagbeg_trm - $tagbeg_off;
$tagend_len = $tagend_trm - $tagend_off;
$tagbeg = substr($fdata, $tagbeg_off + 4, $tagbeg_len - 4);
$tagend = substr($fdata, $tagend_off + 4, $tagend_len - 4);
if ($tagbeg != $tagend) {
printf(gettext("error: tag mismatch ( %1\$s != %2\$s ) in '%3\$s'%4\$s"), $tagbeg, $tagend, $fpath, "\n");
break;
}
$mdata_off = $tagbeg_trm + 1;
$mdata_trm = $tagend_off - 1;
$mdata_len = $mdata_trm - $mdata_off;
$mdata = substr($fdata, $mdata_off, $mdata_len);
if (!strlen($mdata)) {
printf(gettext("warning: tag %1\$s has no data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
break;
}
$offset = $tagend_trm + 1;
if (is_array($taglist)) {
if (!in_array($tagbeg, $taglist)) {
continue;
}
}
$vals = array();
$lines = explode("\n", $mdata);
foreach ($lines as $line) {
if (!strlen($line)) {
continue;
}
$valtag = stripos($line, "##|*");
if ($valtag === false || $valtag) {
printf(gettext("warning: tag %1\$s has malformed data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
continue;
}
$value = substr($line, 4, strlen($line) - 1);
$vlist = explode("=", $value);
unset($vname);
unset($vdata);
switch (count($vlist)) {
case 1:
$vname = $vlist[0];
$vdata = true;
break;
case 2:
$vname = $vlist[0];
$vdata = $vlist[1];
break;
}
if (!isset($vname) || !isset($vdata)) {
printf(gettext("warning: tag %1\$s has invalid data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
continue;
}
$vals[$vname][] = $vdata;
}
if (count($vals)) {
$tags[$tagbeg] = $vals;
}
}
if (count($tags)) {
$metadata[$fname] = $tags;
}
}
?>
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