Maison php教程 php手册 一个获取google chrome扩展crx文件信息的PHP操作类

一个获取google chrome扩展crx文件信息的PHP操作类

Sep 15, 2016 am 11:14 AM

此类中实现了从crx文件获取扩展的Appid、获取manifest.json文件内容、将crx文件转换为一般zip文件 

代码如下:

<span style="color: #000000;">php
</span><span style="color: #0000ff;">class</span> CrxParserException <span style="color: #0000ff;">extends</span> <span style="color: #0000ff;">Exception</span><span style="color: #000000;"> {

}

</span><span style="color: #008000;">/*</span><span style="color: #008000;">*
 * Chrome crx 解析器,用于获取扩展、皮肤ID
 *
 </span><span style="color: #008000;">*/</span>
<span style="color: #0000ff;">class</span><span style="color: #000000;"> CrxParser {
    </span><span style="color: #0000ff;">const</span> MAX_PUBLIC_KEY_SIZE = 65535<span style="color: #000000;">;
    </span><span style="color: #0000ff;">const</span> MAX_SIGNATURE_SIZE  = 65535<span style="color: #000000;">;
    </span><span style="color: #0000ff;">const</span> HEADER_MAGIC_PREFIX = 'Cr24'<span style="color: #000000;">;
    </span><span style="color: #0000ff;">const</span> CURRENT_VERSION     = 2<span style="color: #000000;">;

    </span><span style="color: #0000ff;">private</span> <span style="color: #800080;">$fp</span> = <span style="color: #0000ff;">null</span>; <span style="color: #008000;">//</span><span style="color: #008000;">文件指针</span>
    <span style="color: #0000ff;">private</span> <span style="color: #800080;">$filename</span> = ''; <span style="color: #008000;">//</span><span style="color: #008000;">文件路径</span>
    <span style="color: #0000ff;">private</span> <span style="color: #800080;">$_header</span> = <span style="color: #0000ff;">array</span>(); <span style="color: #008000;">//</span><span style="color: #008000;">crx 文件的头信息</span>

    <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> __construct(<span style="color: #800080;">$filename</span><span style="color: #000000;">){
        </span><span style="color: #800080;">$this</span>-&gt;parse(<span style="color: #800080;">$filename</span><span style="color: #000000;">);
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 获取此应用的ID
     * @return string
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> getAppid() {
        </span><span style="color: #800080;">$hash</span> = hash('sha256',<span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">_key);
        </span><span style="color: #800080;">$hash</span> = <span style="color: #008080;">substr</span>(<span style="color: #800080;">$hash</span>,0,32<span style="color: #000000;">);

        </span><span style="color: #800080;">$length</span> = <span style="color: #008080;">strlen</span>(<span style="color: #800080;">$hash</span><span style="color: #000000;">);
        </span><span style="color: #800080;">$ascii_0</span> = <span style="color: #008080;">ord</span>('0'<span style="color: #000000;">);
        </span><span style="color: #800080;">$ascii_9</span> = <span style="color: #008080;">ord</span>('9'<span style="color: #000000;">);
        </span><span style="color: #800080;">$ascii_a</span> = <span style="color: #008080;">ord</span>('a'<span style="color: #000000;">);
        </span><span style="color: #800080;">$data</span> = ''<span style="color: #000000;">;
        </span><span style="color: #0000ff;">for</span>(<span style="color: #800080;">$i</span>=0;<span style="color: #800080;">$i</span>$length;<span style="color: #800080;">$i</span>++<span style="color: #000000;">) {
            </span><span style="color: #800080;">$c</span> = <span style="color: #008080;">ord</span>(<span style="color: #800080;">$hash</span>[<span style="color: #800080;">$i</span><span style="color: #000000;">]);

            </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$c</span> &gt;= <span style="color: #800080;">$ascii_0</span> &amp;&amp; <span style="color: #800080;">$c</span> $ascii_9<span style="color: #000000;">) {
                </span><span style="color: #800080;">$d</span> = <span style="color: #008080;">chr</span>(<span style="color: #800080;">$ascii_a</span> + <span style="color: #800080;">$c</span> - <span style="color: #800080;">$ascii_0</span><span style="color: #000000;">);
            } </span><span style="color: #0000ff;">else</span> <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$c</span> &gt;= <span style="color: #800080;">$ascii_a</span> &amp;&amp; <span style="color: #800080;">$c</span> $ascii_a + 6<span style="color: #000000;">) {
                </span><span style="color: #800080;">$d</span> = <span style="color: #008080;">chr</span>(<span style="color: #800080;">$ascii_a</span> + <span style="color: #800080;">$c</span> - <span style="color: #800080;">$ascii_a</span> + 10<span style="color: #000000;">);
            } </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> {
                </span><span style="color: #800080;">$d</span> = 'a'<span style="color: #000000;">;
            }
            </span><span style="color: #800080;">$data</span> .= <span style="color: #800080;">$d</span><span style="color: #000000;">;
        }
        </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$data</span><span style="color: #000000;">;
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 从crx文件中获取manifest.json文件的配置信息
     * @param unknown $zip_file
     * @return mixed[]
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">function</span> getConfig(<span style="color: #800080;">$key</span>=<span style="color: #0000ff;">null</span><span style="color: #000000;">){
        </span><span style="color: #800080;">$zip_file</span>=<span style="color: #008080;">tempnam</span>(<span style="color: #008080;">dirname</span>(<span style="color: #800080;">$this</span>-&gt;filename),'zip'<span style="color: #000000;">);
        </span><span style="color: #800080;">$manifest_arr</span>=<span style="color: #0000ff;">array</span><span style="color: #000000;">();
        </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$this</span>-&gt;convertToZip(<span style="color: #800080;">$zip_file</span><span style="color: #000000;">)){
            </span><span style="color: #800080;">$zip</span>=zip_open(<span style="color: #800080;">$zip_file</span><span style="color: #000000;">);
            </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">is_resource</span>(<span style="color: #800080;">$zip</span><span style="color: #000000;">)){
                </span><span style="color: #0000ff;">while</span>(<span style="color: #800080;">$zip_entry</span>=zip_read(<span style="color: #800080;">$zip</span><span style="color: #000000;">)){
                    </span><span style="color: #800080;">$entry_name</span>=zip_entry_name(<span style="color: #800080;">$zip_entry</span><span style="color: #000000;">);
                    </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">preg_match</span>('/manifest\.json$/', <span style="color: #800080;">$entry_name</span><span style="color: #000000;">)){
                        </span><span style="color: #800080;">$content</span>=zip_entry_read(<span style="color: #800080;">$zip_entry</span>, zip_entry_filesize(<span style="color: #800080;">$zip_entry</span><span style="color: #000000;">));
                        </span><span style="color: #800080;">$content_j</span>=json_decode(<span style="color: #800080;">$content</span>, <span style="color: #0000ff;">true</span><span style="color: #000000;">);
                        </span><span style="color: #0000ff;">if</span>(!<span style="color: #0000ff;">empty</span>(<span style="color: #800080;">$content_j</span><span style="color: #000000;">)){
                            </span><span style="color: #800080;">$manifest_arr</span>=<span style="color: #800080;">$content_j</span><span style="color: #000000;">;
                        }
                    }
                }
            }
            zip_close(</span><span style="color: #800080;">$zip</span><span style="color: #000000;">);
            </span><span style="color: #008080;">unlink</span>(<span style="color: #800080;">$zip_file</span><span style="color: #000000;">);
        }
        </span><span style="color: #0000ff;">return</span> <span style="color: #008080;">is_null</span>(<span style="color: #800080;">$key</span>) ? <span style="color: #800080;">$manifest_arr</span> : <span style="color: #800080;">$manifest_arr</span>[<span style="color: #800080;">$key</span><span style="color: #000000;">];
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 将文件转换为zip文件
     * @param unknown $target_path
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> convertToZip(<span style="color: #800080;">$target_path</span>=<span style="color: #0000ff;">null</span><span style="color: #000000;">){
        </span><span style="color: #800080;">$offset</span>=16+<span style="color: #800080;">$this</span>-&gt;_header['key_size']+<span style="color: #800080;">$this</span>-&gt;_header['sig_size'<span style="color: #000000;">];
        </span><span style="color: #800080;">$data</span>=<span style="color: #800080;">$this</span>-&gt;getContent(<span style="color: #800080;">$this</span>-&gt;filename,<span style="color: #800080;">$offset</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">return</span> !<span style="color: #008080;">is_null</span>(<span style="color: #800080;">$target_path</span>) ? <span style="color: #008080;">file_put_contents</span>(<span style="color: #800080;">$target_path</span>, <span style="color: #800080;">$data</span>) : <span style="color: #800080;">$data</span><span style="color: #000000;">;
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 开始解析该 crx 文件
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span> parse(<span style="color: #800080;">$filename</span><span style="color: #000000;">) {
        </span><span style="color: #0000ff;">if</span>(<span style="color: #008080;">strpos</span>(<span style="color: #800080;">$filename</span>, '://')!==<span style="color: #0000ff;">false</span> &amp;&amp; !<span style="color: #008080;">file_exists</span>(<span style="color: #800080;">$filename</span><span style="color: #000000;">)) {
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("parser init: crx file does not exisit"<span style="color: #000000;">);
        }
        </span><span style="color: #800080;">$this</span>-&gt;filename=<span style="color: #800080;">$filename</span><span style="color: #000000;">;
        </span><span style="color: #800080;">$this</span>-&gt;fp = <span style="color: #008080;">fopen</span>(<span style="color: #800080;">$filename</span>, 'r'<span style="color: #000000;">);
        </span><span style="color: #800080;">$this</span>-&gt;parse_header(); <span style="color: #008000;">//</span><span style="color: #008000;"> 解析头部信息</span>
        <span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">parse_key();
        </span><span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">parse_sig();
        </span><span style="color: #008080;">fclose</span>(<span style="color: #800080;">$this</span>-&gt;<span style="color: #000000;">fp);
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 解析头部信息,并设置 $_header 数组
     * @throws CrxParserException 解析错误抛出异常
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> parse_header() {
        </span><span style="color: #800080;">$data</span> = <span style="color: #008080;">fread</span>(<span style="color: #800080;">$this</span>-&gt;fp, 16); <span style="color: #008000;">//</span><span style="color: #008000;"> HEADER 头信息有16个字节</span>
        <span style="color: #0000ff;">if</span>(<span style="color: #800080;">$data</span><span style="color: #000000;">) {
            </span><span style="color: #800080;">$data</span> = @<span style="color: #008080;">unpack</span>('C4prefix/Vversion/Vkey_size/Vsig_size',<span style="color: #800080;">$data</span><span style="color: #000000;">);
        }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("header parse: error reading header"<span style="color: #000000;">);
        }
        </span><span style="color: #008000;">//</span><span style="color: #008000;"> 前四个字节拼合 prefix</span>
        <span style="color: #800080;">$data</span>['prefix'] = <span style="color: #008080;">chr</span>( <span style="color: #800080;">$data</span>['prefix1'] ).<span style="color: #008080;">chr</span>( <span style="color: #800080;">$data</span>['prefix2'] ).<span style="color: #008080;">chr</span>( <span style="color: #800080;">$data</span>['prefix3'] ).<span style="color: #008080;">chr</span>( <span style="color: #800080;">$data</span>['prefix4'<span style="color: #000000;">] );
        </span><span style="color: #0000ff;">unset</span>(<span style="color: #800080;">$data</span>['prefix1'],<span style="color: #800080;">$data</span>['prefix2'],<span style="color: #800080;">$data</span>['prefix3'],<span style="color: #800080;">$data</span>['prefix4'<span style="color: #000000;">]);

        </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$data</span>['prefix'] != self::<span style="color: #000000;">HEADER_MAGIC_PREFIX) {
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("header parse: illegal prefix"<span style="color: #000000;">);
        }
        </span><span style="color: #0000ff;">if</span>( <span style="color: #800080;">$data</span>['version'] != self::<span style="color: #000000;">CURRENT_VERSION ) {
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("header parse: illegal version"<span style="color: #000000;">);
        }
        </span><span style="color: #0000ff;">if</span><span style="color: #000000;">(
                </span><span style="color: #0000ff;">empty</span>(<span style="color: #800080;">$data</span>['key_size']) || <span style="color: #800080;">$data</span>['key_size'] &gt; self::MAX_PUBLIC_KEY_SIZE ||
                <span style="color: #0000ff;">empty</span>(<span style="color: #800080;">$data</span>['sig_size']) || <span style="color: #800080;">$data</span>['sig_size'] &gt; self::<span style="color: #000000;">MAX_SIGNATURE_SIZE
                ){
                    </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("header parse: illegal public key size or signature size"<span style="color: #000000;">);
        }
        </span><span style="color: #800080;">$this</span>-&gt;_header = <span style="color: #800080;">$data</span><span style="color: #000000;">;
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 解析key
     * @throws CrxParserException
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> parse_key() {
        </span><span style="color: #800080;">$key</span> = <span style="color: #008080;">fread</span>(<span style="color: #800080;">$this</span>-&gt;fp,<span style="color: #800080;">$this</span>-&gt;_header['key_size'<span style="color: #000000;">]);
        </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$key</span><span style="color: #000000;">) {
            </span><span style="color: #800080;">$this</span>-&gt;_key = <span style="color: #800080;">$key</span><span style="color: #000000;">;
        }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("key parse: error reading key"<span style="color: #000000;">);
        }
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 解析sig
     * @throws CrxParserException
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> parse_sig() {
        </span><span style="color: #800080;">$sig</span> = <span style="color: #008080;">fread</span>(<span style="color: #800080;">$this</span>-&gt;fp,<span style="color: #800080;">$this</span>-&gt;_header['sig_size'<span style="color: #000000;">]);
        </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$sig</span><span style="color: #000000;">) {
            </span><span style="color: #800080;">$this</span>-&gt;_sig = <span style="color: #800080;">$sig</span><span style="color: #000000;">;
        }</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
            </span><span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> CrxParserException("sig parse: error reading sig"<span style="color: #000000;">);
        }
    }

    </span><span style="color: #008000;">/*</span><span style="color: #008000;">*
     * 从文件中获取指定位置及大小的内容
     * @param unknown $filename
     * @param number $offset
     * @param unknown $length
     * @return string
     </span><span style="color: #008000;">*/</span>
    <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">function</span> getContent(<span style="color: #800080;">$filename</span>,<span style="color: #800080;">$offset</span>=0,<span style="color: #800080;">$length</span>=-1<span style="color: #000000;">){
        </span><span style="color: #800080;">$stream</span> = <span style="color: #008080;">fopen</span>(<span style="color: #800080;">$filename</span>, 'rb'<span style="color: #000000;">);
        </span><span style="color: #800080;">$content</span> = <span style="color: #008080;">stream_get_contents</span>(<span style="color: #800080;">$stream</span>, <span style="color: #800080;">$length</span>, <span style="color: #800080;">$offset</span><span style="color: #000000;">);
        </span><span style="color: #008080;">fclose</span>(<span style="color: #800080;">$stream</span><span style="color: #000000;">);
        </span><span style="color: #0000ff;">return</span> <span style="color: #800080;">$content</span><span style="color: #000000;">;
    }

}</span>
Copier après la connexion

 

使用方法:

<span style="color: #000000;">php
</span><span style="color: #800080;">$crxParser</span>=<span style="color: #0000ff;">new</span> CrxParser('abc.crx'<span style="color: #000000;">);
</span><span style="color: #0000ff;">echo</span> <span style="color: #800080;">$crxParser</span>-&gt;<span style="color: #000000;">getAppid();
</span><span style="color: #008080;">var_dump</span>(<span style="color: #800080;">$crxParser</span>-&gt;<span style="color: #000000;">getConfig());
</span><span style="color: #008000;">//</span><span style="color: #008000;">$crxParser-&gt;convertToZip('abc.zip');</span>
Copier après la connexion

 

Déclaration de ce site Web
Le contenu de cet article est volontairement contribué par les internautes et les droits d'auteur appartiennent à l'auteur original. Ce site n'assume aucune responsabilité légale correspondante. Si vous trouvez un contenu suspecté de plagiat ou de contrefaçon, veuillez contacter admin@php.cn

Article chaud

R.E.P.O. Crystals d'énergie expliqués et ce qu'ils font (cristal jaune)
1 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Repo: Comment relancer ses coéquipiers
3 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: Comment obtenir des graines géantes
3 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Combien de temps faut-il pour battre Split Fiction?
3 Il y a quelques semaines By DDD

Article chaud

R.E.P.O. Crystals d'énergie expliqués et ce qu'ils font (cristal jaune)
1 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Repo: Comment relancer ses coéquipiers
3 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: Comment obtenir des graines géantes
3 Il y a quelques semaines By 尊渡假赌尊渡假赌尊渡假赌
Combien de temps faut-il pour battre Split Fiction?
3 Il y a quelques semaines By DDD

Tags d'article chaud

Bloc-notes++7.3.1

Bloc-notes++7.3.1

Éditeur de code facile à utiliser et gratuit

SublimeText3 version chinoise

SublimeText3 version chinoise

Version chinoise, très simple à utiliser

Envoyer Studio 13.0.1

Envoyer Studio 13.0.1

Puissant environnement de développement intégré PHP

Dreamweaver CS6

Dreamweaver CS6

Outils de développement Web visuel

SublimeText3 version Mac

SublimeText3 version Mac

Logiciel d'édition de code au niveau de Dieu (SublimeText3)