調試Crypt_GPG的過程

在瀏覽器端的錯誤輸出訊息：

<code>( ! ) Fatal error: Uncaught <span>&lt;<span>table</span><span>style</span>=<span>"border: 1px"</span><span>cellspacing</span>=<span>"0"</span>&gt;</span><span>&lt;<span>tr</span>&gt;</span><span>&lt;<span>td</span><span>colspan</span>=<span>"3"</span><span>style</span>=<span>"background: #ff9999"</span>&gt;</span><span>&lt;<span>b</span>&gt;</span>Crypt_GPG_FileException<span>&lt;/<span>b</span>&gt;</span>: The 'homedir' &amp;quot;/Library/WebServer/.gnupg&amp;quot; is not readable or does not exist and cannot be created. This can happen if 'homedir' is not specified in the Crypt_GPG options, Crypt_GPG is run as the web user, and the web user has no home directory. in <span>&lt;<span>b</span>&gt;</span>/usr/local/webdata/andy/fanli/citic/Crypt/GPGAbstract.php<span>&lt;/<span>b</span>&gt;</span> on line <span>&lt;<span>b</span>&gt;</span>278<span>&lt;/<span>b</span>&gt;</span><span>&lt;/<span>td</span>&gt;</span><span>&lt;/<span>tr</span>&gt;</span><span>&lt;<span>tr</span>&gt;</span><span>&lt;<span>td</span><span>colspan</span>=<span>"3"</span><span>style</span>=<span>"background-color: #aaaaaa; text-align: center; font-weight: bold;"</span>&gt;</span>Exception trace<span>&lt;/<span>td</span>&gt;</span><span>&lt;/<span>tr</span>&gt;</span><span>&lt;<span>tr</span>&gt;</span><span>&lt;<span>td</span><span>style</span>=<span>"text-align: center; background: #cccccc; width:20px; font-weight: bold;"</span>&gt;</span>#<span>&lt;/<span>td</span>&gt;</span><span>&lt;<span>td</span><span>style</span>=<span>"text-align: center; background: #cccccc; font-weight: bold;"</span>&gt;</span>Function<span>&lt;/<span>td</span>&gt;</span><span>&lt;<span>td</span><span>style</span>=<span>"text-align: center; background: #cccccc; font-weight: bold;"</span>&gt;</span>Location<span>&lt;/<span>td</span>&gt;</span><span>&lt;/<span>tr</span>&gt;</span><span>&lt;<span>tr</span>&gt;</span><span>&lt;<span>td</span><span>style</span>=<span>"text-align: center;"</span>&gt;</span>0<span>&lt;/<span>td</span>&gt;</span><span>&lt;<span>td</span>&gt;</span>Crypt_GPG_Engine-&gt;__construct(Array)<span>&lt;/<span>td</span>&gt;</span><span>&lt;<span>td</span>&gt;</span>/usr/local/webdata/andy/fanli/citic/Crypt/GPGAbstract.php in /usr/local/webdata/andy/fanli/citic/Crypt/GPG/Engine.php on line 541</code>

命令列輸出的錯誤訊息：

<code>PHP Fatal error:  Uncaught PEAR_Exception: gpg<span>-agent</span> binary <span>not</span> found<span>.</span><span>If</span> you are sure the gpg<span>-agent</span> is installed, please specify the location of the gpg<span>-agent</span> binary using the <span>'agent'</span> driver option<span>.</span><span>in</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPGAbstract<span>.</span>php <span>on</span> line <span>278</span><span>#0</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPGAbstract<span>.</span>php(<span>278</span>): Crypt_GPG_Engine<span>-&gt;</span>__construct(<span>Array</span>)
<span>#1</span> /usr/<span>local</span>/webdata/andy/fanli/citic/gpg2<span>.</span>php(<span>9</span>): Crypt_GPGAbstract<span>-&gt;</span>__construct()
<span>#2</span> {main}
  thrown <span>in</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPG/Engine<span>.</span>php <span>on</span> line <span>601</span>Fatal error: Uncaught PEAR_Exception: gpg<span>-agent</span> binary <span>not</span> found<span>.</span><span>If</span> you are sure the gpg<span>-agent</span> is installed, please specify the location of the gpg<span>-agent</span> binary using the <span>'agent'</span> driver option<span>.</span><span>in</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPGAbstract<span>.</span>php <span>on</span> line <span>278</span><span>#0</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPGAbstract<span>.</span>php(<span>278</span>): Crypt_GPG_Engine<span>-&gt;</span>__construct(<span>Array</span>)
<span>#1</span> /usr/<span>local</span>/webdata/andy/fanli/citic/gpg2<span>.</span>php(<span>9</span>): Crypt_GPGAbstract<span>-&gt;</span>__construct()
<span>#2</span> {main}
  thrown <span>in</span> /usr/<span>local</span>/webdata/andy/fanli/citic/Crypt/GPG/Engine<span>.</span>php <span>on</span> line <span>601</span></code>

第一個browser中報的錯我分析是權限問題，第二個在shell中運作才是其真正的問題所在，根據提示，使用brew安裝gpg-agent。

之後我寫程式碼如下：

<code><span>require_once</span><span>'./Crypt/GPG.php'</span>;

<span>$gpg</span> = <span>new</span> Crypt_GPG();
<span>$key</span> = getKey();
<span>$gpg</span>-&gt;addDecryptKey(<span>'zhangsanfeng'</span>,<span>'123456'</span>);
<span>$encrypted</span> = file_get_contents(<span>'wait_for_decrpyt.txt.gpg'</span>);
<span>$data</span> = <span>$gpg</span>-&gt;decrypt(<span>$encrypted</span>);
<span>echo</span><span>'&lt;pre&gt;'</span>;var_dump(<span>$data</span>);<span>exit</span>;</code>

終於解密成功！ ！ ！

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以上就介紹了調試Crypt_GPG的過程，包括了方面的內容，希望對PHP教程有興趣的朋友有所幫助。