0.2
This commit is contained in:
Peter Molnar
parent
ec40791f5b
commit
21e20d02f0
2 changed files with 79 additions and 84 deletions
10
readme.txt
10
readme.txt
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@ -3,8 +3,8 @@ Contributors: cadeyrn
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Donate link: https://paypal.me/petermolnar/3
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Tags: linkrot, archive, hyperlink, url
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Requires at least: 3.0
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Tested up to: 4.4
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Stable tag: 0.1
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Tested up to: 4.4.1
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Stable tag: 0.2
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License: GPLv3
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License URI: http://www.gnu.org/licenses/gpl-3.0.html
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Required minimum PHP version: 5.3
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@ -36,6 +36,12 @@ Version numbering logic:
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* every .B version indicates new features.
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* every ..C indicates bugfixes for A.B version.
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= 0.2 =
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*2016-01-07*
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* better logic
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* replaced db, adding response headers, cookies and additional stuff
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= 0.1 =
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*2015-12-11*
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@ -3,7 +3,7 @@
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Plugin Name: wp-url2snapshot
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Plugin URI: https://github.com/petermolnar/wp-url2snapshot
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Description: reversible automatic short slug based on post pubdate epoch for WordPress
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Version: 0.1
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Version: 0.2
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Author: Peter Molnar <hello@petermolnar.eu>
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Author URI: http://petermolnar.eu/
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License: GPLv3
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@ -33,6 +33,8 @@ class WP_URL2SNAPSHOT {
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const timeout = 5;
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const redirection = 5;
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private $looping = 0;
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public function __construct() {
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add_action( 'init', array( &$this, 'init'));
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@ -119,39 +121,31 @@ class WP_URL2SNAPSHOT {
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$urls = static::extract_urls($content);
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foreach ($urls as $url) {
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$url = esc_url_raw($url);
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if (empty($url)) {
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return false;
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}
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if (empty($url))
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continue;
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$domain = parse_url(get_bloginfo('url'), PHP_URL_HOST);
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if (preg_match("/^https?:\/\/{$domain}.*$/", $url)) {
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return false;
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}
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elseif (preg_match('/^https?:\/\/127\.0\.0\.1.*$/', $url )) {
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return false;
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}
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if (preg_match("/^https?:\/\/{$domain}.*$/", $url))
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continue;
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if (preg_match('/^https?:\/\/127\.0\.0\.1.*$/', $url ))
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continue;
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static::debug(" found url {$url}" );
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if (!$this->hash_exists($url)) {
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static::debug(" not yet snapshotted, doing it now" );
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$status = true;
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$r = $this->get_url($url);
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// status is passed by reference !!!
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$content = $this->get_url($url, $status);
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if (($content !== false && $status === true) || $status == 'e_nottext' ) {
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// all clear or not text
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// not text is stored, otherwise it won't be skipped and will be retried
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$s = $this->snapshot( $url, $content );
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if (!empty($r) && is_array($r) && isset($r['headers']) && isset($r['body'])) {
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$this->snapshot( $url, $r );
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}
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elseif ( $status == 'try_archive' ) {
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// dead content, try archive.org
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$acontent = $this->try_archive($url);
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if (!empty($acontent)) {
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$s = $this->snapshot( $url, $acontent );
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}
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else {
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static::debug(" getting url failed :(" );
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continue;
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}
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}
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else {
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@ -169,20 +163,19 @@ class WP_URL2SNAPSHOT {
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*/
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private function try_archive ( &$url ) {
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static::debug(' trying to get archive.org version instead');
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$astatus = true;
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$wstatus = true;
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static::debug(' trying to get archive.org version');
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$aurl = 'https://archive.org/wayback/available?url=' . $url;
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$archive = $this->get_url($aurl, $astatus);
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$archive = $this->get_url($aurl);
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if (($archive == false || $astatus != true) ) {
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static::debug(" archive.org version failed");
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return false;
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}
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if (($archive === false) )
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return false;
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if (!is_array($archive) || !isset($archive['headers']) || !isset($archive['body']))
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return false;
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try {
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$json = json_decode($archive);
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$json = json_decode($archive['body']);
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}
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catch (Exception $e) {
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static::debug(" something went wrong: " . $e->getMessage());
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@ -217,13 +210,7 @@ class WP_URL2SNAPSHOT {
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$wurl = str_replace( $json->archived_snapshots->closest->timestamp, $json->archived_snapshots->closest->timestamp . 'id_', $wurl );
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static::debug(" trying {$wurl}");
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$wget = $this->get_url($wurl, $wstatus);
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if (($wget !== false && $wstatus === true) ) {
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static::debug(" success! Found archive.org version at {$wurl}");
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return $wget;
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}
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return false;
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return $this->get_url($wurl);
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}
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/**
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@ -255,7 +242,8 @@ class WP_URL2SNAPSHOT {
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/**
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*
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*/
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private static function get_url ( &$url, &$status ) {
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private function get_url ( &$url ) {
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if (empty($url))
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return false;
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@ -270,82 +258,79 @@ class WP_URL2SNAPSHOT {
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if ( is_wp_error( $response ) ) {
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static::debug(" retrieving URL ${url} failed: " . $response->get_error_message());
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if ( $response->get_error_message() == 'name lookup timed out' ) {
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$status = 'try_archive';
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}
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else {
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$status = 'e_error';
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}
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return false;
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}
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if (!isset($response['headers']) || empty($response['headers']) || !isset($response['response']) || empty($response['response']) || !isset($response['response']['code']) || empty($response['response']['code'])) {
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static::debug(" WHAT? No or empty headers? Get out of here.");
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$status = 'e_noresponseheaders';
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return false;
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}
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if (!isset($response['headers']['content-type']) || empty($response['headers']['content-type'])) {
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static::debug(" Empty content type, I don't want this link");
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$status = 'e_nomime';
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return false;
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}
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if ($response['response']['code'] != 200) {
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static::debug(" Response was {$response['response']['code']}.");
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if ( $response['response']['code'] == 404 ) {
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$status = 'try_archive';
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// 400s: client error. Yeah, sure.
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if ($response['response']['code'] < 500 && $response['response']['code'] >= 400 ) {
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return $this->try_archive($url);
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}
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// try next time
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elseif ($response['response']['code'] >= 500 ) {
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return false;
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}
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// redirects, follow redirect, but keep counting to avoid infinity
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elseif ($response['response']['code'] < 400 && $response['response']['code'] >= 300 && isset($response['headers']['location']) && !empty($response['headers']['location'])) {
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if ($this->looping < 6) {
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$this->looping = $this->looping + 1;
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return $this->get_url($response['headers']['location']);
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}
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else {
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$status = 'e_not200';
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}
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return $response['response']['code'];
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}
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$mime_ok = false;
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$mimes = array ('text/', 'application/json', 'application/javascript');
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foreach ( $mimes as $mime ) {
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if (stristr( $response['headers']['content-type'], $mime)) {
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$mime_ok = true;
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$this->looping = 0;
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return false;
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}
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}
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elseif ($response['response']['code'] == 200) {
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$mime_ok = false;
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$mimes = array ('text/', 'application/json', 'application/javascript');
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foreach ( $mimes as $mime ) {
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if (stristr( $response['headers']['content-type'], $mime)) {
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$mime_ok = true;
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}
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}
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if (!$mime_ok) {
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static::debug(" {$response['headers']['content-type']} is probably not text");
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$status = 'e_nottext';
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if (!$mime_ok) {
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static::debug(" {$response['headers']['content-type']} is not text, we don't want it.");
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return true;
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}
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}
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else {
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static::debug(" Response was {$response['headers']['code']}. This is not yet handled.");
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return false;
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}
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$contents = wp_remote_retrieve_body( $response );
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if (is_wp_error($contents)) {
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static::debug(" retrieving contents of URL ${url} failed: " . $response->get_error_message());
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$status = 'e_content';
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return false;
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}
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return $contents;
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$this->looping = 0;
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return $response;
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}
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/**
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*
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*/
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private function snapshot ( &$url, &$content ) {
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private function snapshot ( &$url, &$r ) {
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global $wpdb;
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$dbname = "{$wpdb->prefix}urlsnapshots";
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$r = false;
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$req = false;
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$q = $wpdb->prepare( "INSERT INTO `{$dbname}` (`url_hash`,`url_date`,`url_url`,`url_content`) VALUES (UNHEX(SHA1('{$url}')), NOW(), '%s', '%s' );", $url, $content );
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$q = $wpdb->prepare( "INSERT INTO `{$dbname}` (`url_hash`,`url_date`,`url_url`, `url_response`,`url_headers`, `url_cookies`,`url_body`) VALUES (UNHEX(SHA1('{$url}')), NOW(), '%s', '%s', '%s', '%s', '%s' );", $url, json_encode($r['response']), json_encode($r['headers']), json_encode($r['cookies']), $r['body'] );
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try {
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$r = $wpdb->query( $q );
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$req = $wpdb->query( $q );
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}
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catch (Exception $e) {
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static::debug('Something went wrong: ' . $e->getMessage());
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}
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return $r;
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return $req;
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}
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/**
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@ -372,7 +357,11 @@ class WP_URL2SNAPSHOT {
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`url_hash` binary(20),
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`url_date` datetime NOT NULL DEFAULT NOW(),
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`url_url` text COLLATE {$wpdb->collate},
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`url_content` longtext COLLATE {$wpdb->collate},
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`url_response` text COLLATE {$wpdb->collate},
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`url_headers` text COLLATE {$wpdb->collate},
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`url_cookies` text COLLATE {$wpdb->collate},
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`url_body` longtext COLLATE {$wpdb->collate},
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PRIMARY KEY (`url_hash`)
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) {$charset_collate};";
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