1 | <?php |
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2 | /** |
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3 | * A Class for connecting to a caldav server |
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4 | * |
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5 | * @package awl |
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6 | * |
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7 | * @subpackage caldav |
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8 | * @author Andrew McMillan <andrew@mcmillan.net.nz> |
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9 | * @copyright Andrew McMillan |
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10 | * @license http://www.gnu.org/licenses/lgpl-3.0.txt GNU LGPL version 3 or later |
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11 | */ |
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12 | |
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13 | require_once('XMLDocument.php'); |
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14 | |
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15 | /** |
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16 | * A class for holding basic calendar information |
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17 | * @package awl |
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18 | */ |
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19 | class CalendarInfo { |
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20 | public $url, $displayname, $getctag; |
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21 | |
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22 | function __construct( $url, $displayname = null, $getctag = null ) { |
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23 | $this->url = $url; |
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24 | $this->displayname = $displayname; |
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25 | $this->getctag = $getctag; |
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26 | } |
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27 | |
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28 | function __toString() { |
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29 | return( '(URL: '.$this->url.' Ctag: '.$this->getctag.' Displayname: '.$this->displayname .')'. "\n" ); |
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30 | } |
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31 | } |
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32 | |
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33 | |
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34 | /** |
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35 | * A class for accessing DAViCal via CalDAV, as a client |
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36 | * |
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37 | * @package awl |
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38 | */ |
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39 | class CalDAVClient { |
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40 | /** |
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41 | * Server, username, password, calendar |
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42 | * |
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43 | * @var string |
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44 | */ |
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45 | protected $base_url, $user, $pass, $entry, $protocol, $server, $port; |
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46 | |
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47 | /** |
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48 | * The principal-URL we're using |
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49 | */ |
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50 | protected $principal_url; |
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51 | |
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52 | /** |
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53 | * The calendar-URL we're using |
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54 | */ |
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55 | protected $calendar_url; |
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56 | |
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57 | /** |
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58 | * The calendar-home-set we're using |
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59 | */ |
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60 | protected $calendar_home_set; |
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61 | |
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62 | /** |
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63 | * The calendar_urls we have discovered |
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64 | */ |
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65 | protected $calendar_urls; |
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66 | |
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67 | /** |
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68 | * The useragent which is send to the caldav server |
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69 | * |
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70 | * @var string |
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71 | */ |
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72 | public $user_agent = 'DAViCalClient'; |
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73 | |
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74 | protected $headers = array(); |
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75 | protected $body = ""; |
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76 | protected $requestMethod = "GET"; |
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77 | protected $httpRequest = ""; // for debugging http headers sent |
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78 | protected $xmlRequest = ""; // for debugging xml sent |
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79 | protected $httpResponse = ""; // http headers received |
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80 | protected $xmlResponse = ""; // xml received |
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81 | |
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82 | protected $parser; // our XML parser object |
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83 | |
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84 | /** |
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85 | * Constructor, initialises the class |
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86 | * |
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87 | * @param string $base_url The URL for the calendar server |
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88 | * @param string $user The name of the user logging in |
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89 | * @param string $pass The password for that user |
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90 | */ |
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91 | function __construct( $base_url, $user, $pass ) { |
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92 | $this->user = $user; |
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93 | $this->pass = $pass; |
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94 | $this->headers = array(); |
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95 | |
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96 | if ( preg_match( '#^(https?)://([a-z0-9.-]+)(:([0-9]+))?(/.*)$#', $base_url, $matches ) ) { |
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97 | $this->server = $matches[2]; |
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98 | $this->base_url = $matches[5]; |
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99 | if ( $matches[1] == 'https' ) { |
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100 | $this->protocol = 'ssl'; |
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101 | $this->port = 443; |
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102 | } |
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103 | else { |
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104 | $this->protocol = 'tcp'; |
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105 | $this->port = 80; |
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106 | } |
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107 | if ( $matches[4] != '' ) { |
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108 | $this->port = intval($matches[4]); |
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109 | } |
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110 | } |
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111 | else { |
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112 | trigger_error("Invalid URL: '".$base_url."'", E_USER_ERROR); |
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113 | } |
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114 | } |
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115 | |
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116 | /** |
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117 | * Adds an If-Match or If-None-Match header |
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118 | * |
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119 | * @param bool $match to Match or Not to Match, that is the question! |
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120 | * @param string $etag The etag to match / not match against. |
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121 | */ |
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122 | function SetMatch( $match, $etag = '*' ) { |
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123 | $this->headers['match'] = sprintf( "%s-Match: %s", ($match ? "If" : "If-None"), $etag); |
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124 | } |
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125 | |
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126 | /** |
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127 | * Add a Depth: header. Valid values are 0, 1 or infinity |
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128 | * |
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129 | * @param int $depth The depth, default to infinity |
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130 | */ |
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131 | function SetDepth( $depth = '0' ) { |
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132 | $this->headers['depth'] = 'Depth: '. ($depth == '1' ? "1" : ($depth == 'infinity' ? $depth : "0") ); |
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133 | } |
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134 | |
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135 | /** |
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136 | * Add a Depth: header. Valid values are 1 or infinity |
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137 | * |
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138 | * @param int $depth The depth, default to infinity |
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139 | */ |
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140 | function SetUserAgent( $user_agent = null ) { |
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141 | if ( !isset($user_agent) ) $user_agent = $this->user_agent; |
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142 | $this->user_agent = $user_agent; |
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143 | } |
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144 | |
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145 | /** |
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146 | * Add a Content-type: header. |
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147 | * |
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148 | * @param string $type The content type |
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149 | */ |
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150 | function SetContentType( $type ) { |
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151 | $this->headers['content-type'] = "Content-type: $type"; |
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152 | } |
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153 | |
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154 | /** |
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155 | * Set the calendar_url we will be using for a while. |
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156 | * |
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157 | * @param string $url The calendar_url |
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158 | */ |
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159 | function SetCalendar( $url ) { |
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160 | $this->calendar_url = $url; |
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161 | } |
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162 | |
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163 | /** |
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164 | * Split response into httpResponse and xmlResponse |
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165 | * |
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166 | * @param string Response from server |
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167 | */ |
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168 | function ParseResponse( $response ) { |
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169 | $pos = strpos($response, '<?xml'); |
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170 | if ($pos === false) { |
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171 | $this->httpResponse = trim($response); |
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172 | } |
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173 | else { |
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174 | $this->httpResponse = trim(substr($response, 0, $pos)); |
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175 | $this->xmlResponse = trim(substr($response, $pos)); |
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176 | $this->xmlResponse = preg_replace('{>[^>]*$}s', '>',$this->xmlResponse ); |
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177 | $parser = xml_parser_create_ns('UTF-8'); |
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178 | xml_parser_set_option ( $parser, XML_OPTION_SKIP_WHITE, 1 ); |
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179 | xml_parser_set_option ( $parser, XML_OPTION_CASE_FOLDING, 0 ); |
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180 | |
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181 | if ( xml_parse_into_struct( $parser, $this->xmlResponse, $this->xmlnodes, $this->xmltags ) === 0 ) { |
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182 | printf( "XML parsing error: %s - %s\n", xml_get_error_code($parser), xml_error_string(xml_get_error_code($parser)) ); |
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183 | // debug_print_backtrace(); |
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184 | // echo "\nNodes array............................................................\n"; print_r( $this->xmlnodes ); |
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185 | // echo "\nTags array............................................................\n"; print_r( $this->xmltags ); |
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186 | printf( "\nXML Reponse:\n%s\n", $this->xmlResponse ); |
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187 | } |
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188 | |
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189 | xml_parser_free($parser); |
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190 | } |
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191 | } |
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192 | |
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193 | /** |
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194 | * Output http request headers |
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195 | * |
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196 | * @return HTTP headers |
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197 | */ |
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198 | function GetHttpRequest() { |
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199 | return $this->httpRequest; |
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200 | } |
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201 | /** |
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202 | * Output http response headers |
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203 | * |
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204 | * @return HTTP headers |
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205 | */ |
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206 | function GetResponseHeaders() { |
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207 | return $this->httpResponseHeaders; |
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208 | } |
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209 | /** |
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210 | * Output http response body |
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211 | * |
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212 | * @return HTTP body |
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213 | */ |
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214 | function GetResponseBody() { |
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215 | return $this->httpResponseBody; |
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216 | } |
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217 | /** |
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218 | * Output xml request |
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219 | * |
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220 | * @return raw xml |
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221 | */ |
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222 | function GetXmlRequest() { |
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223 | return $this->xmlRequest; |
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224 | } |
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225 | /** |
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226 | * Output xml response |
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227 | * |
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228 | * @return raw xml |
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229 | */ |
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230 | function GetXmlResponse() { |
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231 | return $this->xmlResponse; |
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232 | } |
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233 | |
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234 | /** |
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235 | * Send a request to the server |
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236 | * |
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237 | * @param string $url The URL to make the request to |
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238 | * |
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239 | * @return string The content of the response from the server |
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240 | */ |
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241 | function DoRequest( $url = null ) { |
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242 | if(!defined("_FSOCK_TIMEOUT")){ define("_FSOCK_TIMEOUT", 10); } |
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243 | $headers = array(); |
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244 | |
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245 | if ( !isset($url) ) $url = $this->base_url; |
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246 | $this->request_url = $url; |
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247 | $url = preg_replace('{^https?://[^/]+}', '', $url); |
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248 | // URLencode if it isn't already |
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249 | if ( preg_match( '{[^%?&=+,.-_/a-z0-9]}', $url ) ) { |
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250 | $url = str_replace(rawurlencode('/'),'/',rawurlencode($url)); |
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251 | $url = str_replace(rawurlencode('?'),'?',$url); |
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252 | $url = str_replace(rawurlencode('&'),'&',$url); |
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253 | $url = str_replace(rawurlencode('='),'=',$url); |
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254 | $url = str_replace(rawurlencode('+'),'+',$url); |
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255 | $url = str_replace(rawurlencode(','),',',$url); |
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256 | } |
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257 | $headers[] = $this->requestMethod." ". $url . " HTTP/1.1"; |
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258 | $headers[] = "Authorization: Basic ".base64_encode($this->user .":". $this->pass ); |
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259 | $headers[] = "Host: ".$this->server .":".$this->port; |
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260 | |
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261 | if ( !isset($this->headers['content-type']) ) $this->headers['content-type'] = "Content-type: text/plain"; |
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262 | foreach( $this->headers as $ii => $head ) { |
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263 | $headers[] = $head; |
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264 | } |
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265 | $headers[] = "Content-Length: " . strlen($this->body); |
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266 | $headers[] = "User-Agent: " . $this->user_agent; |
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267 | $headers[] = 'Connection: close'; |
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268 | $this->httpRequest = join("\r\n",$headers); |
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269 | $this->xmlRequest = $this->body; |
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270 | |
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271 | $this->httpResponse = ''; |
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272 | $this->xmlResponse = ''; |
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273 | |
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274 | $fip = fsockopen( $this->protocol . '://' . $this->server, $this->port, $errno, $errstr, _FSOCK_TIMEOUT); //error handling? |
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275 | if ( !(get_resource_type($fip) == 'stream') ) return false; |
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276 | if ( !fwrite($fip, $this->httpRequest."\r\n\r\n".$this->body) ) { fclose($fip); return false; } |
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277 | $response = ""; |
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278 | while( !feof($fip) ) { $response .= fgets($fip,8192); } |
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279 | fclose($fip); |
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280 | |
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281 | list( $this->httpResponseHeaders, $this->httpResponseBody ) = preg_split( '{\r?\n\r?\n}s', $response, 2 ); |
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282 | if ( preg_match( '{Transfer-Encoding: chunked}i', $this->httpResponseHeaders ) ) $this->Unchunk(); |
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283 | |
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284 | $this->headers = array(); // reset the headers array for our next request |
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285 | $this->ParseResponse($this->httpResponseBody); |
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286 | return $response; |
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287 | } |
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288 | |
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289 | |
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290 | /** |
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291 | * Unchunk a chunked response |
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292 | */ |
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293 | function Unchunk() { |
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294 | $content = ''; |
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295 | $chunks = $this->httpResponseBody; |
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296 | // printf( "\n================================\n%s\n================================\n", $chunks ); |
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297 | do { |
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298 | $bytes = 0; |
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299 | if ( preg_match('{^((\r\n)?\s*([ 0-9a-fA-F]+)(;[^\n]*)?\r?\n)}', $chunks, $matches ) ) { |
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300 | $octets = $matches[3]; |
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301 | $bytes = hexdec($octets); |
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302 | $pos = strlen($matches[1]); |
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303 | // printf( "Chunk size 0x%s (%d)\n", $octets, $bytes ); |
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304 | if ( $bytes > 0 ) { |
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305 | // printf( "---------------------------------\n%s\n---------------------------------\n", substr($chunks,$pos,$bytes) ); |
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306 | $content .= substr($chunks,$pos,$bytes); |
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307 | $chunks = substr($chunks,$pos + $bytes + 2); |
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308 | // printf( "+++++++++++++++++++++++++++++++++\n%s\n+++++++++++++++++++++++++++++++++\n", $chunks ); |
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309 | } |
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310 | } |
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311 | else { |
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312 | $content .= $chunks; |
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313 | } |
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314 | } |
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315 | while( $bytes > 0 ); |
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316 | $this->httpResponseBody = $content; |
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317 | // printf( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n%s\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n", $content ); |
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318 | } |
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319 | |
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320 | |
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321 | /** |
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322 | * Send an OPTIONS request to the server |
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323 | * |
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324 | * @param string $url The URL to make the request to |
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325 | * |
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326 | * @return array The allowed options |
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327 | */ |
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328 | function DoOptionsRequest( $url = null ) { |
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329 | $this->requestMethod = "OPTIONS"; |
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330 | $this->body = ""; |
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331 | $headers = $this->DoRequest($url); |
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332 | $options_header = preg_replace( '/^.*Allow: ([a-z, ]+)\r?\n.*/is', '$1', $headers ); |
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333 | $options = array_flip( preg_split( '/[, ]+/', $options_header )); |
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334 | return $options; |
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335 | } |
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336 | |
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337 | |
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338 | |
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339 | /** |
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340 | * Send an XML request to the server (e.g. PROPFIND, REPORT, MKCALENDAR) |
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341 | * |
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342 | * @param string $method The method (PROPFIND, REPORT, etc) to use with the request |
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343 | * @param string $xml The XML to send along with the request |
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344 | * @param string $url The URL to make the request to |
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345 | * |
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346 | * @return array An array of the allowed methods |
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347 | */ |
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348 | function DoXMLRequest( $request_method, $xml, $url = null ) { |
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349 | $this->body = $xml; |
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350 | $this->requestMethod = $request_method; |
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351 | $this->SetContentType("text/xml"); |
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352 | return $this->DoRequest($url); |
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353 | } |
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354 | |
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355 | |
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356 | |
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357 | /** |
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358 | * Get a single item from the server. |
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359 | * |
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360 | * @param string $url The URL to GET |
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361 | */ |
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362 | function DoGETRequest( $url ) { |
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363 | $this->body = ""; |
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364 | $this->requestMethod = "GET"; |
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365 | return $this->DoRequest( $url ); |
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366 | } |
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367 | |
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368 | |
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369 | /** |
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370 | * Get the HEAD of a single item from the server. |
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371 | * |
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372 | * @param string $url The URL to HEAD |
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373 | */ |
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374 | function DoHEADRequest( $url ) { |
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375 | $this->body = ""; |
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376 | $this->requestMethod = "HEAD"; |
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377 | return $this->DoRequest( $url ); |
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378 | } |
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379 | |
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380 | |
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381 | /** |
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382 | * PUT a text/icalendar resource, returning the etag |
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383 | * |
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384 | * @param string $url The URL to make the request to |
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385 | * @param string $icalendar The iCalendar resource to send to the server |
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386 | * @param string $etag The etag of an existing resource to be overwritten, or '*' for a new resource. |
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387 | * |
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388 | * @return string The content of the response from the server |
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389 | */ |
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390 | function DoPUTRequest( $url, $icalendar, $etag = null ) { |
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391 | $this->body = $icalendar; |
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392 | |
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393 | $this->requestMethod = "PUT"; |
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394 | if ( $etag != null ) { |
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395 | $this->SetMatch( ($etag != '*'), $etag ); |
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396 | } |
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397 | $this->SetContentType('text/calendar; encoding="utf-8"'); |
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398 | $this->DoRequest($url); |
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399 | |
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400 | $etag = null; |
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401 | if ( preg_match( '{^ETag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1]; |
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402 | if ( !isset($etag) || $etag == '' ) { |
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403 | printf( "No etag in:\n%s\n", $this->httpResponseHeaders ); |
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404 | $save_request = $this->httpRequest; |
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405 | $save_response_headers = $this->httpResponseHeaders; |
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406 | $this->DoHEADRequest( $url ); |
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407 | if ( preg_match( '{^Etag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1]; |
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408 | if ( !isset($etag) || $etag == '' ) { |
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409 | printf( "Still No etag in:\n%s\n", $this->httpResponseHeaders ); |
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410 | } |
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411 | $this->httpRequest = $save_request; |
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412 | $this->httpResponseHeaders = $save_response_headers; |
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413 | } |
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414 | return $etag; |
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415 | } |
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416 | |
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417 | |
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418 | /** |
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419 | * DELETE a text/icalendar resource |
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420 | * |
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421 | * @param string $url The URL to make the request to |
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422 | * @param string $etag The etag of an existing resource to be deleted, or '*' for any resource at that URL. |
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423 | * |
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424 | * @return int The HTTP Result Code for the DELETE |
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425 | */ |
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426 | function DoDELETERequest( $url, $etag = null ) { |
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427 | $this->body = ""; |
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428 | |
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429 | $this->requestMethod = "DELETE"; |
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430 | if ( $etag != null ) { |
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431 | $this->SetMatch( true, $etag ); |
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432 | } |
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433 | $this->DoRequest($url); |
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434 | return $this->resultcode; |
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435 | } |
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436 | |
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437 | |
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438 | /** |
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439 | * Get a single item from the server. |
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440 | * |
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441 | * @param string $url The URL to PROPFIND on |
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442 | */ |
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443 | function DoPROPFINDRequest( $url, $props, $depth = 0 ) { |
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444 | $this->SetDepth($depth); |
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445 | $xml = new XMLDocument( array( 'DAV:' => '', 'urn:ietf:params:xml:ns:caldav' => 'C' ) ); |
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446 | $prop = new XMLElement('prop'); |
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447 | foreach( $props AS $v ) { |
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448 | $xml->NSElement($prop,$v); |
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449 | } |
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450 | |
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451 | $this->body = $xml->Render('propfind',$prop ); |
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452 | |
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453 | $this->requestMethod = "PROPFIND"; |
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454 | $this->SetContentType("text/xml"); |
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455 | $this->DoRequest($url); |
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456 | return $this->GetXmlResponse(); |
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457 | } |
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458 | |
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459 | |
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460 | /** |
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461 | * Get/Set the Principal URL |
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462 | * |
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463 | * @param $url string The Principal URL to set |
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464 | */ |
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465 | function PrincipalURL( $url = null ) { |
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466 | if ( isset($url) ) { |
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467 | $this->principal_url = $url; |
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468 | } |
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469 | return $this->principal_url; |
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470 | } |
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471 | |
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472 | |
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473 | /** |
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474 | * Get/Set the calendar-home-set URL |
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475 | * |
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476 | * @param $url array of string The calendar-home-set URLs to set |
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477 | */ |
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478 | function CalendarHomeSet( $urls = null ) { |
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479 | if ( isset($urls) ) { |
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480 | if ( ! is_array($urls) ) $urls = array($urls); |
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481 | $this->calendar_home_set = $urls; |
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482 | } |
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483 | return $this->calendar_home_set; |
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484 | } |
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485 | |
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486 | |
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487 | /** |
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488 | * Get/Set the calendar-home-set URL |
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489 | * |
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490 | * @param $urls array of string The calendar URLs to set |
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491 | */ |
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492 | function CalendarUrls( $urls = null ) { |
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493 | if ( isset($urls) ) { |
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494 | if ( ! is_array($urls) ) $urls = array($urls); |
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495 | $this->calendar_urls = $urls; |
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496 | } |
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497 | return $this->calendar_urls; |
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498 | } |
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499 | |
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500 | |
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501 | /** |
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502 | * Return the first occurrence of an href inside the named tag. |
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503 | * |
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504 | * @param string $tagname The tag name to find the href inside of |
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505 | */ |
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506 | function HrefValueInside( $tagname ) { |
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507 | foreach( $this->xmltags[$tagname] AS $k => $v ) { |
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508 | $j = $v + 1; |
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509 | if ( $this->xmlnodes[$j]['tag'] == 'DAV::href' ) { |
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510 | return rawurldecode($this->xmlnodes[$j]['value']); |
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511 | } |
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512 | } |
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513 | return null; |
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514 | } |
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515 | |
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516 | |
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517 | /** |
---|
518 | * Return the href containing this property. Except only if it's inside a status != 200 |
---|
519 | * |
---|
520 | * @param string $tagname The tag name of the property to find the href for |
---|
521 | * @param integer $which Which instance of the tag should we use |
---|
522 | */ |
---|
523 | function HrefForProp( $tagname, $i = 0 ) { |
---|
524 | if ( isset($this->xmltags[$tagname]) && isset($this->xmltags[$tagname][$i]) ) { |
---|
525 | $j = $this->xmltags[$tagname][$i]; |
---|
526 | while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::href' ) { |
---|
527 | // printf( "Node[$j]: %s\n", $this->xmlnodes[$j]['tag']); |
---|
528 | if ( $this->xmlnodes[$j]['tag'] == 'DAV::status' && $this->xmlnodes[$j]['value'] != 'HTTP/1.1 200 OK' ) return null; |
---|
529 | } |
---|
530 | // printf( "Node[$j]: %s\n", $this->xmlnodes[$j]['tag']); |
---|
531 | if ( $j > 0 && isset($this->xmlnodes[$j]['value']) ) { |
---|
532 | // printf( "Value[$j]: %s\n", $this->xmlnodes[$j]['value']); |
---|
533 | return rawurldecode($this->xmlnodes[$j]['value']); |
---|
534 | } |
---|
535 | } |
---|
536 | else { |
---|
537 | printf( "xmltags[$tagname] or xmltags[$tagname][$i] is not set\n"); |
---|
538 | } |
---|
539 | return null; |
---|
540 | } |
---|
541 | |
---|
542 | |
---|
543 | /** |
---|
544 | * Return the href which has a resourcetype of the specified type |
---|
545 | * |
---|
546 | * @param string $tagname The tag name of the resourcetype to find the href for |
---|
547 | * @param integer $which Which instance of the tag should we use |
---|
548 | */ |
---|
549 | function HrefForResourcetype( $tagname, $i = 0 ) { |
---|
550 | if ( isset($this->xmltags[$tagname]) && isset($this->xmltags[$tagname][$i]) ) { |
---|
551 | $j = $this->xmltags[$tagname][$i]; |
---|
552 | while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::resourcetype' ); |
---|
553 | if ( $j > 0 ) { |
---|
554 | while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::href' ); |
---|
555 | if ( $j > 0 && isset($this->xmlnodes[$j]['value']) ) { |
---|
556 | return rawurldecode($this->xmlnodes[$j]['value']); |
---|
557 | } |
---|
558 | } |
---|
559 | } |
---|
560 | return null; |
---|
561 | } |
---|
562 | |
---|
563 | |
---|
564 | /** |
---|
565 | * Return the <prop> ... </prop> of a propstat where the status is OK |
---|
566 | * |
---|
567 | * @param string $nodenum The node number in the xmlnodes which is the href |
---|
568 | */ |
---|
569 | function GetOKProps( $nodenum ) { |
---|
570 | $props = null; |
---|
571 | $level = $this->xmlnodes[$nodenum]['level']; |
---|
572 | $status = ''; |
---|
573 | while ( $this->xmlnodes[++$nodenum]['level'] >= $level ) { |
---|
574 | if ( $this->xmlnodes[$nodenum]['tag'] == 'DAV::propstat' ) { |
---|
575 | if ( $this->xmlnodes[$nodenum]['type'] == 'open' ) { |
---|
576 | $props = array(); |
---|
577 | $status = ''; |
---|
578 | } |
---|
579 | else { |
---|
580 | if ( $status == 'HTTP/1.1 200 OK' ) break; |
---|
581 | } |
---|
582 | } |
---|
583 | elseif ( !isset($this->xmlnodes[$nodenum]) || !is_array($this->xmlnodes[$nodenum]) ) { |
---|
584 | break; |
---|
585 | } |
---|
586 | elseif ( $this->xmlnodes[$nodenum]['tag'] == 'DAV::status' ) { |
---|
587 | $status = $this->xmlnodes[$nodenum]['value']; |
---|
588 | } |
---|
589 | else { |
---|
590 | $props[] = $this->xmlnodes[$nodenum]; |
---|
591 | } |
---|
592 | } |
---|
593 | return $props; |
---|
594 | } |
---|
595 | |
---|
596 | |
---|
597 | /** |
---|
598 | * Attack the given URL in an attempt to find a principal URL |
---|
599 | * |
---|
600 | * @param string $url The URL to find the principal-URL from |
---|
601 | */ |
---|
602 | function FindPrincipal( $url ) { |
---|
603 | $xml = $this->DoPROPFINDRequest( $url, array('resourcetype', 'current-user-principal', 'owner', 'principal-URL', |
---|
604 | 'urn:ietf:params:xml:ns:caldav:calendar-home-set'), 1); |
---|
605 | |
---|
606 | $principal_url = $this->HrefForProp('DAV::principal'); |
---|
607 | |
---|
608 | if ( !isset($principal_url) ) { |
---|
609 | foreach( array('DAV::current-user-principal', 'DAV::principal-URL', 'DAV::owner') AS $href ) { |
---|
610 | if ( !isset($principal_url) ) { |
---|
611 | $principal_url = $this->HrefValueInside($href); |
---|
612 | } |
---|
613 | } |
---|
614 | } |
---|
615 | |
---|
616 | return $this->PrincipalURL($principal_url); |
---|
617 | } |
---|
618 | |
---|
619 | |
---|
620 | /** |
---|
621 | * Attack the given URL in an attempt to find a principal URL |
---|
622 | * |
---|
623 | * @param string $url The URL to find the calendar-home-set from |
---|
624 | */ |
---|
625 | function FindCalendarHome( $recursed=false ) { |
---|
626 | if ( !isset($this->principal_url) ) { |
---|
627 | $this->FindPrincipal(); |
---|
628 | } |
---|
629 | if ( $recursed ) { |
---|
630 | $this->DoPROPFINDRequest( $this->principal_url, array('urn:ietf:params:xml:ns:caldav:calendar-home-set'), 0); |
---|
631 | } |
---|
632 | |
---|
633 | $calendar_home = array(); |
---|
634 | foreach( $this->xmltags['urn:ietf:params:xml:ns:caldav:calendar-home-set'] AS $k => $v ) { |
---|
635 | if ( $this->xmlnodes[$v]['type'] != 'open' ) continue; |
---|
636 | while( $this->xmlnodes[++$v]['type'] != 'close' && $this->xmlnodes[$v]['tag'] != 'urn:ietf:params:xml:ns:caldav:calendar-home-set' ) { |
---|
637 | // printf( "Tag: '%s' = '%s'\n", $this->xmlnodes[$v]['tag'], $this->xmlnodes[$v]['value']); |
---|
638 | if ( $this->xmlnodes[$v]['tag'] == 'DAV::href' && isset($this->xmlnodes[$v]['value']) ) |
---|
639 | $calendar_home[] = rawurldecode($this->xmlnodes[$v]['value']); |
---|
640 | } |
---|
641 | } |
---|
642 | |
---|
643 | if ( !$recursed && count($calendar_home) < 1 ) { |
---|
644 | $calendar_home = $this->FindCalendarHome(true); |
---|
645 | } |
---|
646 | |
---|
647 | return $this->CalendarHomeSet($calendar_home); |
---|
648 | } |
---|
649 | |
---|
650 | |
---|
651 | /** |
---|
652 | * Find the calendars, from the calendar_home_set |
---|
653 | */ |
---|
654 | function FindCalendars( $recursed=false ) { |
---|
655 | if ( !isset($this->calendar_home_set[0]) ) { |
---|
656 | $this->FindCalendarHome(); |
---|
657 | } |
---|
658 | $this->DoPROPFINDRequest( $this->calendar_home_set[0], array('resourcetype','displayname','http://calendarserver.org/ns/:getctag'), 1); |
---|
659 | |
---|
660 | $calendars = array(); |
---|
661 | if ( isset($this->xmltags['urn:ietf:params:xml:ns:caldav:calendar']) ) { |
---|
662 | $calendar_urls = array(); |
---|
663 | foreach( $this->xmltags['urn:ietf:params:xml:ns:caldav:calendar'] AS $k => $v ) { |
---|
664 | $calendar_urls[$this->HrefForProp('urn:ietf:params:xml:ns:caldav:calendar', $k)] = 1; |
---|
665 | } |
---|
666 | |
---|
667 | foreach( $this->xmltags['DAV::href'] AS $i => $hnode ) { |
---|
668 | $href = rawurldecode($this->xmlnodes[$hnode]['value']); |
---|
669 | |
---|
670 | if ( !isset($calendar_urls[$href]) ) continue; |
---|
671 | |
---|
672 | // printf("Seems '%s' is a calendar.\n", $href ); |
---|
673 | |
---|
674 | $calendar = new CalendarInfo($href); |
---|
675 | $ok_props = $this->GetOKProps($hnode); |
---|
676 | foreach( $ok_props AS $v ) { |
---|
677 | // printf("Looking at: %s[%s]\n", $href, $v['tag'] ); |
---|
678 | switch( $v['tag'] ) { |
---|
679 | case 'http://calendarserver.org/ns/:getctag': |
---|
680 | $calendar->getctag = $v['value']; |
---|
681 | break; |
---|
682 | case 'DAV::displayname': |
---|
683 | $calendar->displayname = $v['value']; |
---|
684 | break; |
---|
685 | } |
---|
686 | } |
---|
687 | $calendars[] = $calendar; |
---|
688 | } |
---|
689 | } |
---|
690 | |
---|
691 | return $this->CalendarUrls($calendars); |
---|
692 | } |
---|
693 | |
---|
694 | |
---|
695 | /** |
---|
696 | * Find the calendars, from the calendar_home_set |
---|
697 | */ |
---|
698 | function GetCalendarDetails( $url = null ) { |
---|
699 | if ( isset($url) ) $this->SetCalendar($url); |
---|
700 | |
---|
701 | $calendar_properties = array( 'resourcetype', 'displayname', 'http://calendarserver.org/ns/:getctag', 'urn:ietf:params:xml:ns:caldav:calendar-timezone', 'supported-report-set' ); |
---|
702 | $this->DoPROPFINDRequest( $this->calendar_url, $calendar_properties, 0); |
---|
703 | |
---|
704 | $hnode = $this->xmltags['DAV::href'][0]; |
---|
705 | $href = rawurldecode($this->xmlnodes[$hnode]['value']); |
---|
706 | |
---|
707 | $calendar = new CalendarInfo($href); |
---|
708 | $ok_props = $this->GetOKProps($hnode); |
---|
709 | foreach( $ok_props AS $k => $v ) { |
---|
710 | $name = preg_replace( '{^.*:}', '', $v['tag'] ); |
---|
711 | if ( isset($v['value'] ) ) { |
---|
712 | $calendar->{$name} = $v['value']; |
---|
713 | } |
---|
714 | /* else { |
---|
715 | printf( "Calendar property '%s' has no text content\n", $v['tag'] ); |
---|
716 | }*/ |
---|
717 | } |
---|
718 | |
---|
719 | return $calendar; |
---|
720 | } |
---|
721 | |
---|
722 | |
---|
723 | /** |
---|
724 | * Get all etags for a calendar |
---|
725 | */ |
---|
726 | function GetCollectionETags( $url = null ) { |
---|
727 | if ( isset($url) ) $this->SetCalendar($url); |
---|
728 | |
---|
729 | $this->DoPROPFINDRequest( $this->calendar_url, array('getetag'), 1); |
---|
730 | |
---|
731 | $etags = array(); |
---|
732 | if ( isset($this->xmltags['DAV::getetag']) ) { |
---|
733 | foreach( $this->xmltags['DAV::getetag'] AS $k => $v ) { |
---|
734 | $href = $this->HrefForProp('DAV::getetag', $k); |
---|
735 | if ( isset($href) && isset($this->xmlnodes[$v]['value']) ) $etags[$href] = $this->xmlnodes[$v]['value']; |
---|
736 | } |
---|
737 | } |
---|
738 | |
---|
739 | return $etags; |
---|
740 | } |
---|
741 | |
---|
742 | |
---|
743 | /** |
---|
744 | * Get a bunch of events for a calendar with a calendar-multiget report |
---|
745 | */ |
---|
746 | function CalendarMultiget( $event_hrefs, $url = null ) { |
---|
747 | |
---|
748 | if ( isset($url) ) $this->SetCalendar($url); |
---|
749 | |
---|
750 | $hrefs = ''; |
---|
751 | foreach( $event_hrefs AS $k => $href ) { |
---|
752 | $href = str_replace( rawurlencode('/'),'/',rawurlencode($href)); |
---|
753 | $hrefs .= '<href>'.$href.'</href>'; |
---|
754 | } |
---|
755 | $this->body = <<<EOXML |
---|
756 | <?xml version="1.0" encoding="utf-8" ?> |
---|
757 | <C:calendar-multiget xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav"> |
---|
758 | <prop><getetag/><C:calendar-data/></prop> |
---|
759 | $hrefs |
---|
760 | </C:calendar-multiget> |
---|
761 | EOXML; |
---|
762 | |
---|
763 | $this->requestMethod = "REPORT"; |
---|
764 | $this->SetContentType("text/xml"); |
---|
765 | $this->DoRequest( $this->calendar_url ); |
---|
766 | |
---|
767 | $events = array(); |
---|
768 | if ( isset($this->xmltags['urn:ietf:params:xml:ns:caldav:calendar-data']) ) { |
---|
769 | foreach( $this->xmltags['urn:ietf:params:xml:ns:caldav:calendar-data'] AS $k => $v ) { |
---|
770 | $href = $this->HrefForProp('urn:ietf:params:xml:ns:caldav:calendar-data', $k); |
---|
771 | // echo "Calendar-data:\n"; print_r($this->xmlnodes[$v]); |
---|
772 | $events[$href] = $this->xmlnodes[$v]['value']; |
---|
773 | } |
---|
774 | } |
---|
775 | else { |
---|
776 | foreach( $event_hrefs AS $k => $href ) { |
---|
777 | $this->DoGETRequest($href); |
---|
778 | $events[$href] = $this->httpResponseBody; |
---|
779 | } |
---|
780 | } |
---|
781 | |
---|
782 | return $events; |
---|
783 | } |
---|
784 | |
---|
785 | |
---|
786 | /** |
---|
787 | * Given XML for a calendar query, return an array of the events (/todos) in the |
---|
788 | * response. Each event in the array will have a 'href', 'etag' and '$response_type' |
---|
789 | * part, where the 'href' is relative to the calendar and the '$response_type' contains the |
---|
790 | * definition of the calendar data in iCalendar format. |
---|
791 | * |
---|
792 | * @param string $filter XML fragment which is the <filter> element of a calendar-query |
---|
793 | * @param string $url The URL of the calendar, or null to use the 'current' calendar_url |
---|
794 | * |
---|
795 | * @return array An array of the relative URLs, etags, and events from the server. Each element of the array will |
---|
796 | * be an array with 'href', 'etag' and 'data' elements, corresponding to the URL, the server-supplied |
---|
797 | * etag (which only varies when the data changes) and the calendar data in iCalendar format. |
---|
798 | */ |
---|
799 | function DoCalendarQuery( $filter, $url = null ) { |
---|
800 | |
---|
801 | if ( isset($url) ) $this->SetCalendar($url); |
---|
802 | |
---|
803 | $this->body = <<<EOXML |
---|
804 | <?xml version="1.0" encoding="utf-8" ?> |
---|
805 | <C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav"> |
---|
806 | <D:prop> |
---|
807 | <C:calendar-data/> |
---|
808 | <D:getetag/> |
---|
809 | </D:prop>$filter |
---|
810 | </C:calendar-query> |
---|
811 | EOXML; |
---|
812 | |
---|
813 | $this->requestMethod = "REPORT"; |
---|
814 | $this->SetContentType("text/xml"); |
---|
815 | $this->DoRequest( $this->calendar_url ); |
---|
816 | |
---|
817 | $report = array(); |
---|
818 | foreach( $this->xmltags as $k => $v ) { |
---|
819 | switch( $v['tag'] ) { |
---|
820 | case 'DAV::response': |
---|
821 | if ( $v['type'] == 'open' ) { |
---|
822 | $response = array(); |
---|
823 | } |
---|
824 | elseif ( $v['type'] == 'close' ) { |
---|
825 | $report[] = $response; |
---|
826 | } |
---|
827 | break; |
---|
828 | case 'DAV::href': |
---|
829 | $response['href'] = basename( rawurldecode($v['value']) ); |
---|
830 | break; |
---|
831 | case 'DAV::getetag': |
---|
832 | $response['etag'] = preg_replace('/^"?([^"]+)"?/', '$1', $v['value']); |
---|
833 | break; |
---|
834 | case 'urn:ietf:params:xml:ns:caldav:calendar-data': |
---|
835 | $response['data'] = $v['value']; |
---|
836 | break; |
---|
837 | } |
---|
838 | } |
---|
839 | return $report; |
---|
840 | } |
---|
841 | |
---|
842 | |
---|
843 | /** |
---|
844 | * Get the events in a range from $start to $finish. The dates should be in the |
---|
845 | * format yyyymmddThhmmssZ and should be in GMT. The events are returned as an |
---|
846 | * array of event arrays. Each event array will have a 'href', 'etag' and 'event' |
---|
847 | * part, where the 'href' is relative to the calendar and the event contains the |
---|
848 | * definition of the event in iCalendar format. |
---|
849 | * |
---|
850 | * @param timestamp $start The start time for the period |
---|
851 | * @param timestamp $finish The finish time for the period |
---|
852 | * @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default ''. |
---|
853 | * |
---|
854 | * @return array An array of the relative URLs, etags, and events, returned from DoCalendarQuery() @see DoCalendarQuery() |
---|
855 | */ |
---|
856 | function GetEvents( $start = null, $finish = null, $relative_url = '' ) { |
---|
857 | $filter = ""; |
---|
858 | if ( isset($start) && isset($finish) ) |
---|
859 | $range = "<C:time-range start=\"$start\" end=\"$finish\"/>"; |
---|
860 | else |
---|
861 | $range = ''; |
---|
862 | |
---|
863 | $filter = <<<EOFILTER |
---|
864 | <C:filter> |
---|
865 | <C:comp-filter name="VCALENDAR"> |
---|
866 | <C:comp-filter name="VEVENT"> |
---|
867 | $range |
---|
868 | </C:comp-filter> |
---|
869 | </C:comp-filter> |
---|
870 | </C:filter> |
---|
871 | EOFILTER; |
---|
872 | |
---|
873 | return $this->DoCalendarQuery($filter, $relative_url); |
---|
874 | } |
---|
875 | |
---|
876 | |
---|
877 | /** |
---|
878 | * Get the todo's in a range from $start to $finish. The dates should be in the |
---|
879 | * format yyyymmddThhmmssZ and should be in GMT. The events are returned as an |
---|
880 | * array of event arrays. Each event array will have a 'href', 'etag' and 'event' |
---|
881 | * part, where the 'href' is relative to the calendar and the event contains the |
---|
882 | * definition of the event in iCalendar format. |
---|
883 | * |
---|
884 | * @param timestamp $start The start time for the period |
---|
885 | * @param timestamp $finish The finish time for the period |
---|
886 | * @param boolean $completed Whether to include completed tasks |
---|
887 | * @param boolean $cancelled Whether to include cancelled tasks |
---|
888 | * @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default ''. |
---|
889 | * |
---|
890 | * @return array An array of the relative URLs, etags, and events, returned from DoCalendarQuery() @see DoCalendarQuery() |
---|
891 | */ |
---|
892 | function GetTodos( $start, $finish, $completed = false, $cancelled = false, $relative_url = "" ) { |
---|
893 | |
---|
894 | if ( $start && $finish ) { |
---|
895 | $time_range = <<<EOTIME |
---|
896 | <C:time-range start="$start" end="$finish"/> |
---|
897 | EOTIME; |
---|
898 | } |
---|
899 | |
---|
900 | // Warning! May contain traces of double negatives... |
---|
901 | $neg_cancelled = ( $cancelled === true ? "no" : "yes" ); |
---|
902 | $neg_completed = ( $cancelled === true ? "no" : "yes" ); |
---|
903 | |
---|
904 | $filter = <<<EOFILTER |
---|
905 | <C:filter> |
---|
906 | <C:comp-filter name="VCALENDAR"> |
---|
907 | <C:comp-filter name="VTODO"> |
---|
908 | <C:prop-filter name="STATUS"> |
---|
909 | <C:text-match negate-condition="$neg_completed">COMPLETED</C:text-match> |
---|
910 | </C:prop-filter> |
---|
911 | <C:prop-filter name="STATUS"> |
---|
912 | <C:text-match negate-condition="$neg_cancelled">CANCELLED</C:text-match> |
---|
913 | </C:prop-filter>$time_range |
---|
914 | </C:comp-filter> |
---|
915 | </C:comp-filter> |
---|
916 | </C:filter> |
---|
917 | EOFILTER; |
---|
918 | |
---|
919 | return $this->DoCalendarQuery($filter, $relative_url); |
---|
920 | } |
---|
921 | |
---|
922 | |
---|
923 | /** |
---|
924 | * Get the calendar entry by UID |
---|
925 | * |
---|
926 | * @param uid |
---|
927 | * @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default ''. |
---|
928 | * |
---|
929 | * @return array An array of the relative URL, etag, and calendar data returned from DoCalendarQuery() @see DoCalendarQuery() |
---|
930 | */ |
---|
931 | function GetEntryByUid( $uid, $relative_url = '' ) { |
---|
932 | $filter = ""; |
---|
933 | if ( $uid ) { |
---|
934 | $filter = <<<EOFILTER |
---|
935 | <C:filter> |
---|
936 | <C:comp-filter name="VCALENDAR"> |
---|
937 | <C:comp-filter name="VEVENT"> |
---|
938 | <C:prop-filter name="UID"> |
---|
939 | <C:text-match icollation="i;octet">$uid</C:text-match> |
---|
940 | </C:prop-filter> |
---|
941 | </C:comp-filter> |
---|
942 | </C:comp-filter> |
---|
943 | </C:filter> |
---|
944 | EOFILTER; |
---|
945 | } |
---|
946 | |
---|
947 | return $this->DoCalendarQuery($filter, $relative_url); |
---|
948 | } |
---|
949 | |
---|
950 | |
---|
951 | /** |
---|
952 | * Get the calendar entry by HREF |
---|
953 | * |
---|
954 | * @param string $href The href from a call to GetEvents or GetTodos etc. |
---|
955 | * |
---|
956 | * @return string The iCalendar of the calendar entry |
---|
957 | */ |
---|
958 | function GetEntryByHref( $href ) { |
---|
959 | $href = str_replace( rawurlencode('/'),'/',rawurlencode($href)); |
---|
960 | return $this->DoGETRequest( $href ); |
---|
961 | } |
---|
962 | |
---|
963 | } |
---|
964 | |
---|
965 | /** |
---|
966 | * Usage example |
---|
967 | * |
---|
968 | * $cal = new CalDAVClient( "http://calendar.example.com/caldav.php/username/calendar/", "username", "password", "calendar" ); |
---|
969 | * $options = $cal->DoOptionsRequest(); |
---|
970 | * if ( isset($options["PROPFIND"]) ) { |
---|
971 | * // Fetch some information about the events in that calendar |
---|
972 | * $cal->SetDepth(1); |
---|
973 | * $folder_xml = $cal->DoXMLRequest("PROPFIND", '<?xml version="1.0" encoding="utf-8" ?><propfind xmlns="DAV:"><prop><getcontentlength/><getcontenttype/><resourcetype/><getetag/></prop></propfind>' ); |
---|
974 | * } |
---|
975 | * // Fetch all events for February |
---|
976 | * $events = $cal->GetEvents("20070101T000000Z","20070201T000000Z"); |
---|
977 | * foreach ( $events AS $k => $event ) { |
---|
978 | * do_something_with_event_data( $event['data'] ); |
---|
979 | * } |
---|
980 | * $acc = array(); |
---|
981 | * $acc["google"] = array( |
---|
982 | * "user"=>"kunsttherapie@gmail.com", |
---|
983 | * "pass"=>"xxxxx", |
---|
984 | * "server"=>"ssl://www.google.com", |
---|
985 | * "port"=>"443", |
---|
986 | * "uri"=>"https://www.google.com/calendar/dav/kunsttherapie@gmail.com/events/", |
---|
987 | * ); |
---|
988 | * |
---|
989 | * $acc["davical"] = array( |
---|
990 | * "user"=>"some_user", |
---|
991 | * "pass"=>"big secret", |
---|
992 | * "server"=>"calendar.foo.bar", |
---|
993 | * "port"=>"80", |
---|
994 | * "uri"=>"http://calendar.foo.bar/caldav.php/some_user/home/", |
---|
995 | * ); |
---|
996 | * //******************************* |
---|
997 | * |
---|
998 | * $account = $acc["davical"]; |
---|
999 | * |
---|
1000 | * //******************************* |
---|
1001 | * $cal = new CalDAVClient( $account["uri"], $account["user"], $account["pass"], "", $account["server"], $account["port"] ); |
---|
1002 | * $options = $cal->DoOptionsRequest(); |
---|
1003 | * print_r($options); |
---|
1004 | * |
---|
1005 | * //******************************* |
---|
1006 | * //******************************* |
---|
1007 | * |
---|
1008 | * $xmlC = <<<PROPP |
---|
1009 | * <?xml version="1.0" encoding="utf-8" ?> |
---|
1010 | * <D:propfind xmlns:D="DAV:" xmlns:C="http://calendarserver.org/ns/"> |
---|
1011 | * <D:prop> |
---|
1012 | * <D:displayname /> |
---|
1013 | * <C:getctag /> |
---|
1014 | * <D:resourcetype /> |
---|
1015 | * |
---|
1016 | * </D:prop> |
---|
1017 | * </D:propfind> |
---|
1018 | * PROPP; |
---|
1019 | * //if ( isset($options["PROPFIND"]) ) { |
---|
1020 | * // Fetch some information about the events in that calendar |
---|
1021 | * // $cal->SetDepth(1); |
---|
1022 | * // $folder_xml = $cal->DoXMLRequest("PROPFIND", $xmlC); |
---|
1023 | * // print_r( $folder_xml); |
---|
1024 | * //} |
---|
1025 | * |
---|
1026 | * // Fetch all events for February |
---|
1027 | * $events = $cal->GetEvents("20090201T000000Z","20090301T000000Z"); |
---|
1028 | * foreach ( $events as $k => $event ) { |
---|
1029 | * print_r($event['data']); |
---|
1030 | * print "\n---------------------------------------------\n"; |
---|
1031 | * } |
---|
1032 | * |
---|
1033 | * //******************************* |
---|
1034 | * //******************************* |
---|
1035 | */ |
---|