1 | <?php defined('BASEPATH') OR exit('No direct script access allowed'); |
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2 | |
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3 | /** |
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4 | * CodeIgniter Curl Class |
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5 | * |
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6 | * Work with remote servers via cURL much easier than using the native PHP bindings. |
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7 | * |
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8 | * @package CodeIgniter |
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9 | * @subpackage Libraries |
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10 | * @category Libraries |
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11 | * @author Philip Sturgeon |
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12 | * @license http://philsturgeon.co.uk/code/dbad-license |
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13 | * @link http://philsturgeon.co.uk/code/codeigniter-curl |
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14 | */ |
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15 | class Curl { |
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16 | |
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17 | protected $_ci; // CodeIgniter instance |
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18 | protected $response = ''; // Contains the cURL response for debug |
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19 | protected $session; // Contains the cURL handler for a session |
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20 | protected $url; // URL of the session |
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21 | protected $options = array(); // Populates curl_setopt_array |
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22 | protected $headers = array(); // Populates extra HTTP headers |
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23 | public $error_code; // Error code returned as an int |
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24 | public $error_string; // Error message returned as a string |
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25 | public $info; // Returned after request (elapsed time, etc) |
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26 | |
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27 | function __construct($url = '') |
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28 | { |
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29 | $this->_ci = & get_instance(); |
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30 | log_message('debug', 'cURL Class Initialized'); |
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31 | |
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32 | if ( ! $this->is_enabled()) |
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33 | { |
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34 | log_message('error', 'cURL Class - PHP was not built with cURL enabled. Rebuild PHP with --with-curl to use cURL.'); |
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35 | } |
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36 | |
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37 | $url AND $this->create($url); |
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38 | } |
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39 | |
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40 | public function __call($method, $arguments) |
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41 | { |
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42 | if (in_array($method, array('simple_get', 'simple_post', 'simple_put', 'simple_delete', 'simple_patch'))) |
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43 | { |
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44 | // Take off the "simple_" and past get/post/put/delete/patch to _simple_call |
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45 | $verb = str_replace('simple_', '', $method); |
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46 | array_unshift($arguments, $verb); |
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47 | return call_user_func_array(array($this, '_simple_call'), $arguments); |
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48 | } |
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49 | } |
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50 | |
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51 | /* ================================================================================= |
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52 | * SIMPLE METHODS |
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53 | * Using these methods you can make a quick and easy cURL call with one line. |
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54 | * ================================================================================= */ |
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55 | |
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56 | public function _simple_call($method, $url, $params = array(), $options = array()) |
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57 | { |
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58 | // Get acts differently, as it doesnt accept parameters in the same way |
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59 | if ($method === 'get') |
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60 | { |
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61 | // If a URL is provided, create new session |
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62 | $this->create($url.($params ? '?'.http_build_query($params, NULL, '&') : '')); |
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63 | } |
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64 | |
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65 | else |
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66 | { |
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67 | // If a URL is provided, create new session |
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68 | $this->create($url); |
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69 | |
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70 | $this->{$method}($params); |
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71 | } |
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72 | |
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73 | // Add in the specific options provided |
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74 | $this->options($options); |
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75 | |
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76 | return $this->execute(); |
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77 | } |
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78 | |
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79 | public function simple_ftp_get($url, $file_path, $username = '', $password = '') |
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80 | { |
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81 | // If there is no ftp:// or any protocol entered, add ftp:// |
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82 | if ( ! preg_match('!^(ftp|sftp)://! i', $url)) |
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83 | { |
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84 | $url = 'ftp://' . $url; |
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85 | } |
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86 | |
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87 | // Use an FTP login |
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88 | if ($username != '') |
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89 | { |
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90 | $auth_string = $username; |
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91 | |
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92 | if ($password != '') |
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93 | { |
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94 | $auth_string .= ':' . $password; |
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95 | } |
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96 | |
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97 | // Add the user auth string after the protocol |
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98 | $url = str_replace('://', '://' . $auth_string . '@', $url); |
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99 | } |
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100 | |
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101 | // Add the filepath |
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102 | $url .= $file_path; |
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103 | |
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104 | $this->option(CURLOPT_BINARYTRANSFER, TRUE); |
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105 | $this->option(CURLOPT_VERBOSE, TRUE); |
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106 | |
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107 | return $this->execute(); |
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108 | } |
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109 | |
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110 | /* ================================================================================= |
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111 | * ADVANCED METHODS |
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112 | * Use these methods to build up more complex queries |
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113 | * ================================================================================= */ |
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114 | |
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115 | public function post($params = array(), $options = array()) |
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116 | { |
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117 | // If its an array (instead of a query string) then format it correctly |
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118 | if (is_array($params)) |
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119 | { |
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120 | $params = http_build_query($params, NULL, '&'); |
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121 | } |
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122 | |
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123 | // Add in the specific options provided |
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124 | $this->options($options); |
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125 | |
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126 | $this->http_method('post'); |
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127 | |
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128 | $this->option(CURLOPT_POST, TRUE); |
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129 | $this->option(CURLOPT_POSTFIELDS, $params); |
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130 | } |
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131 | |
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132 | public function put($params = array(), $options = array()) |
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133 | { |
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134 | // If its an array (instead of a query string) then format it correctly |
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135 | if (is_array($params)) |
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136 | { |
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137 | $params = http_build_query($params, NULL, '&'); |
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138 | } |
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139 | |
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140 | // Add in the specific options provided |
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141 | $this->options($options); |
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142 | |
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143 | $this->http_method('put'); |
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144 | $this->option(CURLOPT_POSTFIELDS, $params); |
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145 | |
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146 | // Override method, I think this overrides $_POST with PUT data but... we'll see eh? |
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147 | $this->option(CURLOPT_HTTPHEADER, array('X-HTTP-Method-Override: PUT')); |
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148 | } |
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149 | |
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150 | public function patch($params = array(), $options = array()) |
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151 | { |
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152 | // If its an array (instead of a query string) then format it correctly |
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153 | if (is_array($params)) |
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154 | { |
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155 | $params = http_build_query($params, NULL, '&'); |
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156 | } |
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157 | |
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158 | // Add in the specific options provided |
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159 | $this->options($options); |
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160 | |
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161 | $this->http_method('patch'); |
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162 | $this->option(CURLOPT_POSTFIELDS, $params); |
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163 | |
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164 | // Override method, I think this overrides $_POST with PATCH data but... we'll see eh? |
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165 | $this->option(CURLOPT_HTTPHEADER, array('X-HTTP-Method-Override: PATCH')); |
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166 | } |
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167 | |
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168 | public function delete($params, $options = array()) |
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169 | { |
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170 | // If its an array (instead of a query string) then format it correctly |
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171 | if (is_array($params)) |
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172 | { |
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173 | $params = http_build_query($params, NULL, '&'); |
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174 | } |
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175 | |
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176 | // Add in the specific options provided |
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177 | $this->options($options); |
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178 | |
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179 | $this->http_method('delete'); |
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180 | |
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181 | $this->option(CURLOPT_POSTFIELDS, $params); |
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182 | } |
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183 | |
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184 | public function set_cookies($params = array()) |
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185 | { |
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186 | if (is_array($params)) |
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187 | { |
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188 | $params = http_build_query($params, NULL, '&'); |
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189 | } |
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190 | |
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191 | $this->option(CURLOPT_COOKIE, $params); |
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192 | return $this; |
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193 | } |
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194 | |
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195 | public function http_header($header, $content = NULL) |
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196 | { |
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197 | $this->headers[] = $content ? $header . ': ' . $content : $header; |
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198 | return $this; |
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199 | } |
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200 | |
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201 | public function http_method($method) |
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202 | { |
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203 | $this->options[CURLOPT_CUSTOMREQUEST] = strtoupper($method); |
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204 | return $this; |
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205 | } |
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206 | |
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207 | public function http_login($username = '', $password = '', $type = 'any') |
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208 | { |
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209 | $this->option(CURLOPT_HTTPAUTH, constant('CURLAUTH_' . strtoupper($type))); |
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210 | $this->option(CURLOPT_USERPWD, $username . ':' . $password); |
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211 | return $this; |
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212 | } |
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213 | |
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214 | public function proxy($url = '', $port = 80) |
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215 | { |
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216 | $this->option(CURLOPT_HTTPPROXYTUNNEL, TRUE); |
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217 | $this->option(CURLOPT_PROXY, $url . ':' . $port); |
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218 | return $this; |
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219 | } |
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220 | |
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221 | public function proxy_login($username = '', $password = '') |
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222 | { |
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223 | $this->option(CURLOPT_PROXYUSERPWD, $username . ':' . $password); |
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224 | return $this; |
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225 | } |
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226 | |
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227 | public function ssl($verify_peer = TRUE, $verify_host = 2, $path_to_cert = NULL) |
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228 | { |
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229 | if ($verify_peer) |
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230 | { |
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231 | $this->option(CURLOPT_SSL_VERIFYPEER, TRUE); |
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232 | $this->option(CURLOPT_SSL_VERIFYHOST, $verify_host); |
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233 | if (isset($path_to_cert)) { |
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234 | $path_to_cert = realpath($path_to_cert); |
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235 | $this->option(CURLOPT_CAINFO, $path_to_cert); |
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236 | } |
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237 | } |
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238 | else |
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239 | { |
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240 | $this->option(CURLOPT_SSL_VERIFYPEER, FALSE); |
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241 | $this->option(CURLOPT_SSL_VERIFYHOST, $verify_host); |
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242 | } |
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243 | return $this; |
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244 | } |
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245 | |
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246 | public function options($options = array()) |
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247 | { |
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248 | // Merge options in with the rest - done as array_merge() does not overwrite numeric keys |
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249 | foreach ($options as $option_code => $option_value) |
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250 | { |
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251 | $this->option($option_code, $option_value); |
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252 | } |
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253 | |
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254 | // Set all options provided |
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255 | curl_setopt_array($this->session, $this->options); |
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256 | |
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257 | return $this; |
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258 | } |
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259 | |
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260 | public function option($code, $value, $prefix = 'opt') |
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261 | { |
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262 | if (is_string($code) && !is_numeric($code)) |
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263 | { |
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264 | $code = constant('CURL' . strtoupper($prefix) . '_' . strtoupper($code)); |
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265 | } |
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266 | |
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267 | $this->options[$code] = $value; |
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268 | return $this; |
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269 | } |
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270 | |
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271 | // Start a session from a URL |
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272 | public function create($url) |
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273 | { |
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274 | // If no a protocol in URL, assume its a CI link |
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275 | if ( ! preg_match('!^\w+://! i', $url)) |
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276 | { |
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277 | $this->_ci->load->helper('url'); |
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278 | $url = site_url($url); |
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279 | } |
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280 | |
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281 | $this->url = $url; |
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282 | $this->session = curl_init($this->url); |
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283 | |
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284 | return $this; |
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285 | } |
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286 | |
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287 | // End a session and return the results |
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288 | public function execute() |
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289 | { |
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290 | // Set two default options, and merge any extra ones in |
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291 | if ( ! isset($this->options[CURLOPT_TIMEOUT])) |
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292 | { |
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293 | $this->options[CURLOPT_TIMEOUT] = 30; |
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294 | } |
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295 | if ( ! isset($this->options[CURLOPT_RETURNTRANSFER])) |
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296 | { |
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297 | $this->options[CURLOPT_RETURNTRANSFER] = TRUE; |
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298 | } |
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299 | if ( ! isset($this->options[CURLOPT_FAILONERROR])) |
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300 | { |
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301 | $this->options[CURLOPT_FAILONERROR] = TRUE; |
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302 | } |
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303 | |
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304 | // Only set follow location if not running securely |
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305 | if ( ! ini_get('safe_mode') && ! ini_get('open_basedir')) |
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306 | { |
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307 | // Ok, follow location is not set already so lets set it to true |
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308 | if ( ! isset($this->options[CURLOPT_FOLLOWLOCATION])) |
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309 | { |
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310 | $this->options[CURLOPT_FOLLOWLOCATION] = TRUE; |
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311 | } |
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312 | } |
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313 | |
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314 | if ( ! empty($this->headers)) |
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315 | { |
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316 | $this->option(CURLOPT_HTTPHEADER, $this->headers); |
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317 | } |
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318 | |
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319 | $this->options(); |
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320 | |
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321 | // Execute the request & and hide all output |
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322 | $this->response = curl_exec($this->session); |
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323 | $this->info = curl_getinfo($this->session); |
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324 | |
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325 | // Request failed |
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326 | if ($this->response === FALSE) |
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327 | { |
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328 | $errno = curl_errno($this->session); |
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329 | $error = curl_error($this->session); |
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330 | |
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331 | curl_close($this->session); |
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332 | $this->set_defaults(); |
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333 | |
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334 | $this->error_code = $errno; |
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335 | $this->error_string = $error; |
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336 | |
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337 | return FALSE; |
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338 | } |
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339 | |
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340 | // Request successful |
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341 | else |
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342 | { |
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343 | curl_close($this->session); |
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344 | $this->last_response = $this->response; |
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345 | $this->set_defaults(); |
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346 | return $this->last_response; |
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347 | } |
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348 | } |
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349 | |
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350 | public function is_enabled() |
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351 | { |
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352 | return function_exists('curl_init'); |
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353 | } |
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354 | |
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355 | public function debug() |
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356 | { |
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357 | echo "=============================================<br/>\n"; |
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358 | echo "<h2>CURL Test</h2>\n"; |
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359 | echo "=============================================<br/>\n"; |
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360 | echo "<h3>Response</h3>\n"; |
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361 | echo "<code>" . nl2br(htmlentities($this->last_response)) . "</code><br/>\n\n"; |
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362 | |
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363 | if ($this->error_string) |
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364 | { |
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365 | echo "=============================================<br/>\n"; |
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366 | echo "<h3>Errors</h3>"; |
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367 | echo "<strong>Code:</strong> " . $this->error_code . "<br/>\n"; |
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368 | echo "<strong>Message:</strong> " . $this->error_string . "<br/>\n"; |
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369 | } |
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370 | |
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371 | echo "=============================================<br/>\n"; |
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372 | echo "<h3>Info</h3>"; |
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373 | echo "<pre>"; |
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374 | print_r($this->info); |
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375 | echo "</pre>"; |
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376 | } |
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377 | |
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378 | public function debug_request() |
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379 | { |
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380 | return array( |
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381 | 'url' => $this->url |
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382 | ); |
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383 | } |
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384 | |
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385 | public function set_defaults() |
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386 | { |
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387 | $this->response = ''; |
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388 | $this->headers = array(); |
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389 | $this->options = array(); |
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390 | $this->error_code = NULL; |
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391 | $this->error_string = ''; |
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392 | $this->session = NULL; |
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393 | } |
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394 | |
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395 | } |
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396 | |
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397 | /* End of file Curl.php */ |
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398 | /* Location: ./application/libraries/Curl.php */ |
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