| 1 | <?php |
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| 2 | require_once("./always.php"); |
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| 3 | dbg_error_log( "freebusy", " User agent: %s", ((isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : "Unfortunately Mulberry and Chandler don't send a 'User-agent' header with their requests :-(")) ); |
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| 4 | dbg_log_array( "headers", '_SERVER', $_SERVER, true ); |
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| 5 | if ( isset($c->public_freebusy_url) && $c->public_freebusy_url ) { |
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| 6 | require_once("PublicSession.php"); |
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| 7 | $session = new PublicSession(); |
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| 8 | } |
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| 9 | else { |
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| 10 | require_once("HTTPAuthSession.php"); |
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| 11 | $session = new HTTPAuthSession(); |
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| 12 | } |
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| 13 | |
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| 14 | |
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| 15 | /** |
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| 16 | * Submission parameters recommended by calconnect, plus some generous alternatives |
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| 17 | */ |
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| 18 | param_to_global('fb_start', '#^[a-z0-9/:.,+-]+$#i', 'start', 'from'); |
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| 19 | param_to_global('fb_end', '#^[a-z0-9/:.,+-]+$#i', 'end', 'until', 'finish', 'to'); |
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| 20 | param_to_global('fb_period', '#^[+-]?P?(\d+[WD]?)(T(\d+H)?(\d+M)?(\d+S)?)?+$#', 'period'); |
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| 21 | param_to_global('fb_format', '#^\S+/\S+$#', 'format'); |
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| 22 | param_to_global('fb_user', '#^.*$#', 'user', 'userid', 'user_no', 'email'); |
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| 23 | param_to_global('fb_token', '#^[a-z0-9+/-]+$#i', 'token'); |
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| 24 | |
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| 25 | if ( isset($fb_period) ) $fb_period = strtoupper($fb_period); |
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| 26 | |
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| 27 | if ( !isset($fb_start) || $fb_start == '' ) $fb_start = date('Y-m-d\TH:i:s', time() - 86400 ); // no recommended default. -1 day |
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| 28 | if ( (!isset($fb_period) && !isset($fb_end)) || ($fb_period == '' && $fb_end == '') ) |
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| 29 | $fb_period = 'P44D'; // 44 days - 2 days more than recommended default |
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| 30 | |
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| 31 | |
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| 32 | /** |
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| 33 | * If fb_user (user, userid, user_no or email parameter) then we adjust |
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| 34 | * the path of the request to suit. |
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| 35 | */ |
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| 36 | if ( isset($fb_user) ) $_SERVER['PATH_INFO'] = '/'.$fb_user.'/'; |
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| 37 | |
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| 38 | /** |
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| 39 | * We also allow URLs like .../freebusy.php/user@example.com to work, so long as |
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| 40 | * the e-mail matches a single user whose calendar we have rights to. |
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| 41 | * @NOTE: It is OK for there to *be* duplicate e-mail addresses, just so long as we |
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| 42 | * only have read permission (or more) for only one of them. |
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| 43 | */ |
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| 44 | require_once("CalDAVRequest.php"); |
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| 45 | $request = new CalDAVRequest(array("allow_by_email" => 1)); |
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| 46 | $path_match = '^'.$request->path; |
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| 47 | if ( preg_match( '{^/(\S+@[a-z0-9][a-z0-9-]*[.][a-z0-9.-]+)/?$}i', $request->path, $matches ) ) { |
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| 48 | $u = getUserByEMail($matches[1]); |
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| 49 | $path_match = '^/'.$u->username.'/'; |
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| 50 | } |
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| 51 | |
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| 52 | if ( isset($fb_format) && $fb_format != 'text/calendar' ) { |
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| 53 | $request->DoResponse( 406, 'This server only supports the text/calendar format for freebusy URLs' ); |
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| 54 | } |
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| 55 | |
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| 56 | if ( ! $request->HavePrivilegeTo('read-free-busy') ) $request->DoResponse( 404 ); |
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| 57 | |
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| 58 | require_once("freebusy-functions.php"); |
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| 59 | |
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| 60 | switch ( $_SERVER['REQUEST_METHOD'] ) { |
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| 61 | case 'GET': |
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| 62 | $range_start = new RepeatRuleDateTime($fb_start); |
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| 63 | if ( !isset($fb_end) ) { |
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| 64 | $range_end = clone($range_start); |
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| 65 | $range_end->modify($fb_period); |
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| 66 | } |
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| 67 | else { |
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| 68 | $range_end = new RepeatRuleDateTime($fb_end); |
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| 69 | } |
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| 70 | $freebusy = get_freebusy( $path_match, $range_start, $range_end ); |
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| 71 | |
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| 72 | $result = new iCalComponent(); |
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| 73 | $result->VCalendar(); |
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| 74 | $result->AddComponent($freebusy); |
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| 75 | |
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| 76 | $request->DoResponse( 200, $result->Render(), 'text/calendar' ); |
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| 77 | break; |
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| 78 | |
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| 79 | default: |
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| 80 | dbg_error_log( "freebusy", "Unhandled request method >>%s<<", $_SERVER['REQUEST_METHOD'] ); |
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| 81 | dbg_log_array( "freebusy", 'HEADERS', $raw_headers ); |
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| 82 | dbg_log_array( "freebusy", '_SERVER', $_SERVER, true ); |
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| 83 | dbg_error_log( "freebusy", "RAW: %s", str_replace("\n", "",str_replace("\r", "", $raw_post)) ); |
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| 84 | } |
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| 85 | |
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