372 lines
18 KiB
HTML
372 lines
18 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><title>Module HowTo - Account pages</title>
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<link rel="stylesheet" type="text/css" href="style/layout.css"></head>
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<link rel="shortcut icon" type="image/x-icon" href="images/favicon.ico">
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<body>
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<div style="text-align: center;">
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<h1>Module HowTo - Account pages<br>
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</h1>
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<br>
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<br>
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<div style="text-align: left;"><br>
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<h2>1. Loading the LDAP attributes<br>
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</h2>
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Every time the user selects an existing account to modify LAM will load
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the complete LDAP entry of it. Your module then should select the
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attributes which are useful for it.<br>
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There are two variables in <span style="font-style: italic;">baseModule</span>
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which should be used to store the attributes. The <span style="font-weight: bold;">$attributes</span> variable stores the
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current attributes including changes the user made. The <span style="font-weight: bold;">$orig</span> variable stores the attributes
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as they were originally when the account was loaded. This allows you to
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see what changes were made.<br>
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<br>
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The <span style="font-weight: bold;">load_attributes()</span> function
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in your module gets the complete attribute list from LDAP.<br>
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<br>
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<span style="font-weight: bold; text-decoration: underline;">Example:</span><br style="font-weight: bold; text-decoration: underline;">
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<br>
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The <span style="font-style: italic;">ieee802Device</span> uses an
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object class and the <span style="font-style: italic;">'macAddress'</span>
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attribute. Therefore we will save this two values.<br>
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<br>
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<table style="width: 100%; text-align: left;" class="mod-code" border="0" cellpadding="2" cellspacing="2">
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<tbody>
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<tr>
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<td style="vertical-align: top;"> /**<br>
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* This function loads all needed attributes into the
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object.<br>
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*<br>
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* @param array $attr an array as it is retured from
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ldap_get_attributes<br>
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*/<br>
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<span style="font-weight: bold;">function</span> <span style="color: rgb(255, 0, 0);">load_attributes</span>($attr) {<br>
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$this->attributes['objectClass'] = array();<br>
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$this->attributes['macAddress'] = array();<br>
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$this->orig['objectClass'] =
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array();<br>
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$this->orig['macAddress'] =
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array();<br>
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if (isset($attr['objectClass'])) {<br>
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unset($attr['objectClass']['count']);<br>
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$this->attributes['objectClass'] = $attr['objectClass'];<br>
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$this->orig['objectClass'] = $attr['objectClass'];<br>
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}<br>
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if (isset($attr['macAddress'])) {<br>
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unset($attr['macAddress']['count']);<br>
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$this->attributes['macAddress'] = $attr['macAddress'];<br>
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$this->orig['macAddress'] = $attr['macAddress'];<br>
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}<br>
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return 0;<br>
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}<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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<br>
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<h2>2. Page display</h2>
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Now that you have defined your subpages you will need one function for
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each page to display it. The function must return <span style="font-style: italic;">meta HTML code</span> as defined in the <span style="font-style: italic;">modules specification</span>.<br>
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This function is called <span style="font-weight: bold;">display_html_<page
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name>()</span> where <span style="font-style: italic;"><page
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name></span> is the name of your subpage.<br>
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<br>
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<span style="font-weight: bold; text-decoration: underline;">Example:</span><br style="font-weight: bold; text-decoration: underline;">
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<br>
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The
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<span style="font-style: italic;">ieee802Device</span>
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module has only one subpage called <span style="font-style: italic;">'attributes'</span>.<br>
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<br>
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The first half of the code displays the existing MAC addresses and the
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second an input field for new values.<br>
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The variable <span style="font-style: italic;">$this->attributes</span>
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contains the LDAP attributes which are useful for this module.<br>
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<br>
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<table style="width: 100%; text-align: left;" class="mod-code" border="0" cellpadding="2" cellspacing="2">
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<tbody>
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<tr>
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<td style="vertical-align: top;"> /**<br>
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* This function will create the meta HTML code to
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show a page with all attributes.<br>
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*<br>
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* @param array $post HTTP-POST values<br>
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*/<br>
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<span style="font-weight: bold;">function</span> <span style="color: rgb(255, 0, 0);">display_html_attributes</span>($post) {<br>
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$return = array();<br>
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// list current MACs<br>
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for ($i = 0; $i <
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sizeof($this->attributes['macAddress']); $i++) {<br>
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$return[] =
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array(<br>
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array('kind' => 'text', 'text' =>
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_('MAC address')),<br>
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array('kind' => 'input', 'name' =>
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'macAddress' . $i, 'type' => 'text', 'size' => '17', 'maxlength'
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=> '17', 'value' => $this->attributes['macAddress'][$i]),<br>
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array('kind' => 'input', 'type' =>
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'submit', 'name' => 'delMAC' . $i, 'value' => _("Remove")),<br>
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array('kind' => 'help', 'value' =>
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'mac'));<br>
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}<br>
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// input box for new MAC<br>
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$return[] = array(<br>
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array('kind' => 'text', 'text' => _('New MAC address')),<br>
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array('kind' => 'input', 'name' => 'macAddress', 'type' =>
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'text', 'size' => '17', 'maxlength' => '17', 'value' => ''),<br>
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array('kind' => 'input', 'type' => 'submit', 'name' =>
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'addMAC', 'value' => _("Add")),<br>
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array('kind' => 'help', 'value' => 'mac'),<br>
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array('kind' => 'input', 'type' => 'hidden', 'value' =>
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sizeof($this->attributes['macAddress']), 'name' => 'mac_number'));<br>
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return $return;<br>
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}<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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<br>
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<h2>3. Processing input data<br>
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</h2>
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Every time the user clicks on a submit button while your page is
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displayed LAM will call a function in your module.<br>
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This function is called <span style="font-weight: bold;">process_<page
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name>()</span> where <span style="font-style: italic;"><page
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name></span> is the name of your subpage.<br>
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<br>
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If all input data is ok then return an empty array. If you return one or more error messages then the user will be
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redirected to your page.<br>
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<br>
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<span style="font-weight: bold; text-decoration: underline;">Example:</span><br style="font-weight: bold; text-decoration: underline;">
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<br>
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The
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<span style="font-style: italic;">ieee802Device</span>
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module has only one subpage called <span style="font-style: italic;">'attributes'</span>
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and therefore only <span style="font-style: italic;">process_attributes()</span>.<br>
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<br>
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The function checks the input fields and fills the LDAP attributes. If
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all is ok it will enable the user to move to another module page.<br>
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<br>
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<table style="width: 100%; text-align: left;" class="mod-code" border="0" cellpadding="2" cellspacing="2">
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<tbody>
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<tr>
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<td style="vertical-align: top;"> /**<br>
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* Write variables into object and do some regex
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checks<br>
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*<br>
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* @param array $post HTTP-POST values<br>
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*/<br>
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<span style="font-weight: bold;">function</span> <span style="color: rgb(255, 0, 0);">process_attributes</span>($post) {<br>
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$errors = array();<br>
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$this->attributes['macAddress'] = array();<br>
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// check old MACs<br>
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if (isset($post['mac_number'])) {<br>
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for ($i = 0;
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$i < $post['mac_number']; $i++) {<br>
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if (isset($post['delMAC' . $i])) continue;<br>
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if (isset($post['macAddress' . $i]) &&
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($post['macAddress' . $i] != "")) {<br>
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// check if address has correct
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format<br>
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if (!get_preg($post['macAddress'
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. $i], 'macAddress')) {<br>
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$message =
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$this->messages['mac'][0];<br>
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$message[] =
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$post['macAddress' . $i];<br>
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$errors[] = $message;<br>
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}<br>
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$this->attributes['macAddress'][] = $post['macAddress' . $i];<br>
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}<br>
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}<br>
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}<br>
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// check new MAC<br>
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if (isset($post['macAddress'])
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&& ($post['macAddress'] != "")) {<br>
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// check if
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address has correct format<br>
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if
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(get_preg($post['macAddress'], 'macAddress')) {<br>
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$this->attributes['macAddress'][] =
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$post['macAddress'];<br>
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}<br>
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else {<br>
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$message =
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$this->messages['mac'][0];<br>
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$message[] = $post['macAddress'];<br>
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$errors[] = $message;<br>
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}<br>
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}<br>
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$this->attributes['macAddress'] =
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array_unique($this->attributes['macAddress']);<br>
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return $errors;<br>
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}<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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<br>
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<h2>4. Defining that your module is ready for user input and LDAP
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add/modify</h2>
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In most cases you will not need to implement these functions. The <span style="font-style: italic;">baseModule</span> will return <span style="font-style: italic;">true</span> for both functions.<br>
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<br>
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<span style="text-decoration: underline;"><br>
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There are two functions which control the module status:</span><br style="text-decoration: underline;">
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<br>
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The <span style="font-weight: bold;">module_ready()</span> function
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has to
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return <span style="font-style: italic;">true</span> if the user may
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move to your module page. If it is <span style="font-style: italic;">false</span>
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the user will be shown an error message that your module is not yet
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ready. You can use this if your module depends on input data from other
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modules (e.g. you need the user name from posixAccount first).<br>
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<br>
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The second function is
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<span style="font-weight: bold;">module_complete()</span>. The user
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cannot do the LDAP operation if one or more modules return <span style="font-style: italic;">false</span>. This defines if all needed
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input data for your module was entered.<br>
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Use this function if you want to check that all required attributes are
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set.<br>
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<br>
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<span style="font-weight: bold; text-decoration: underline;">Example:</span><br style="font-weight: bold; text-decoration: underline;">
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<br>
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The <span style="font-style: italic;">sambaSamAccount</span>
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module needs the user's <span style="font-style: italic;">uidNumber</span>
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and <span style="font-style: italic;">gidNumber</span> before it can
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accept input and the account needs a <span style="font-style: italic;">sambaSID</span>
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before it can be saved.<br>
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<br>
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<table style="width: 100%; text-align: left;" class="mod-code" border="0" cellpadding="2" cellspacing="2">
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<tbody>
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<tr>
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<td style="vertical-align: top;"> /**<br>
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* This function is used to check if this module page
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can be displayed.<br>
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* It returns false if a module depends on data from
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other modules which was not yet entered.<br>
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*<br>
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* @return boolean true, if page can be displayed<br>
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*/<br>
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<span style="font-weight: bold;">function</span> <span style="color: rgb(255, 0, 0);">module_ready</span>() {<br>
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if
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($_SESSION[$this->base]->module['posixAccount']->attributes['gidNumber'][0]=='')
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return false;<br>
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if
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($_SESSION[$this->base]->module['posixAccount']->attributes['uidNumber'][0]=='')
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return false;<br>
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if
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($this->attributes['uid'][0]=='') return false;<br>
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return true;<br>
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}<br>
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<br>
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/**<br>
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* This functions is used to check if all settings
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for this module have been made.<br>
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*<br>
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* @return boolean true, if settings are complete<br>
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*/<br>
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<span style="font-weight: bold;">function</span> <span style="color: rgb(255, 0, 0);">module_complete</span>() {<br>
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if (!$this->module_ready())
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return false;<br>
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if
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($this->attributes['sambaSID'][0] == '') return false;<br>
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return true;<br>
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}<br>
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<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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<br>
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<h2>5. Saving the LDAP attributes<br>
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</h2>
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In most cases you will not have to implement this option if you use <span style="font-weight: bold;">$this->attributes</span> and <span style="font-weight: bold;">$this->orig</span> to manage the LDAP
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attributes. The <span style="font-style: italic;">baseModule</span>
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will generate the save comands for you.<br>
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<br>
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When all modules report that they are ready for LDAP add/modify and the
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user clicks on the add/modify button your module will be asked what
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changes have to be made.<br>
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This is done in the function <span style="font-weight: bold;">save_attributes()</span>.<br>
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<br>
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<span style="font-weight: bold; text-decoration: underline;">Example:</span><br style="font-weight: bold; text-decoration: underline;">
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<br>
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The <span style="font-style: italic;">kolabUser</span> module uses
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this function to make sure that its object class is saved. Other
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modules (e.g. quota) use it build the lamdaemon commands.<br>
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<br>
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<table style="width: 100%; text-align: left;" class="mod-code" border="0" cellpadding="2" cellspacing="2">
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<tbody>
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<tr>
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<td style="vertical-align: top;"> /**<br>
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* Returns a list of modifications which have to be
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made to the LDAP account.<br>
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*<br>
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* @return array list of modifications<br>
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* <br>This function returns an array with 3
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entries:<br>
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* <br>array( DN1 ('add' => array($attr),
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'remove' => array($attr), 'modify' => array($attr)), DN2 .... )<br>
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* <br>DN is the DN to change. It may be
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possible to change several DNs (e.g. create a new user and add him to
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some groups via attribute memberUid)<br>
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* <br>"add" are attributes which have to be
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added to LDAP entry<br>
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* <br>"remove" are attributes which have to be
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removed from LDAP entry<br>
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* <br>"modify" are attributes which have to
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been modified in LDAP entry<br>
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*/<br>
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function save_attributes() {<br>
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// add object class if needed<br>
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if
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(!isset($this->attributes['objectClass']) ||
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!in_array('kolabInetOrgPerson', $this->attributes['objectClass'])) {<br>
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$this->attributes['objectClass'][] = 'kolabInetOrgPerson';<br>
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}<br>
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return parent::save_attributes();<br>
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}<br>
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</td>
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</tr>
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</tbody>
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</table>
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<br>
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<br>
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<span style="font-weight: bold;"></span>
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<h2><span style="font-weight: bold;"></span></h2>
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</div>
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</div>
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</body></html> |