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[friendica.git] / mod / dfrn_request.php
index 7675ee766ad23319f37e5e6cdcc7865319d3e895..1458ba8e467dadfb5eb235d5590570fed93cb254 100644 (file)
@@ -3,11 +3,6 @@
 if(! function_exists('dfrn_request_init')) {
 function dfrn_request_init(&$a) {
 
-       if($_SESSION['authenticated']) {
-               // choose which page to show (could be remote auth)
-
-       }
-
        if($a->argc > 1)
                $which = $a->argv[1];
 
@@ -30,127 +25,145 @@ function dfrn_request_post(&$a) {
        } 
 
 
-       // callback to local site after remote request and local confirm
+       // We've introduced ourself to another cell, then have been returned to our own cell
+       // to confirm the request, and then we've clicked submit (perhaps after logging in). 
+       // That brings us here:
 
-       if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1) 
-               && local_user() && ($_SESSION['uid'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
+       if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
 
-               // We are the requestor, and we've been sent back to our own site
-               // to confirm the request. We've done so and clicked submit,
-               // which brings us here.
+               // Ensure this is a valid request
+               if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
 
 
-               $dfrn_url = notags(trim($_POST['dfrn_url']));
-               $aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
-               $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
+                       $dfrn_url = notags(trim($_POST['dfrn_url']));
+                       $aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
+                       $confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
 
-               $contact_record = null;
+                       $contact_record = null;
        
-               if(x($dfrn_url)) {
-
-                       $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `dfrn-url` = '%s' LIMIT 1",
-                               intval($_SESSION['uid']),
-                               dbesc($dfrn_url)
-                       );
+                       if(x($dfrn_url)) {
        
-                       if(count($r)) {
-                               if(strlen($r[0]['dfrn-id'])) {
-                                       notice("This introduction has already been accepted." . EOL );
-                                       return;
+                               $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
+                                       intval(get_uid()),
+                                       dbesc($dfrn_url)
+                               );
+       
+                               if(count($r)) {
+                                       if(strlen($r[0]['dfrn-id'])) {
+                                               notice( t("This introduction has already been accepted.") . EOL );
+                                               return;
+                                       }
+                                       else
+                                               $contact_record = $r[0];
                                }
-                               else
-                                       $contact_record = $r[0];
-                       }
        
-                       if(is_array($contact_record)) {
-                               $r = q("UPDATE `contact` SET `ret-aes` = %d WHERE `id` = %d LIMIT 1",
-                                       intval($aes_allow),
-                                       intval($contact_record['id'])
-                               );
-                       }
-                       else {
-
-                               require_once('Scrape.php');
-
-
-                               $parms = scrape_dfrn($dfrn_url);
-
-                               if(! count($parms)) {
-                                       notice( 'URL is not valid or does not contain profile information.' . EOL );
-                                       return;
+                               if(is_array($contact_record)) {
+                                       $r = q("UPDATE `contact` SET `ret-aes` = %d WHERE `id` = %d LIMIT 1",
+                                               intval($aes_allow),
+                                               intval($contact_record['id'])
+                                       );
                                }
                                else {
-                                       if(! x($parms,'fn'))
-                                               notice( 'Warning: DFRN profile has no identifiable owner name.' . EOL );
-                                       if(! x($parms,'photo'))
-                                               notice( 'Warning: DFRN profile has no profile photo.' . EOL );
-                                       $invalid = validate_dfrn($parms);               
-                                       if($invalid) {
-                                               notice( $invalid . ' required DFRN parameter' 
-                                                       . (($invalid == 1) ? " was " : "s were " )
-                                                       . "not found at the given URL" . EOL );
+       
+                                       require_once('Scrape.php');
+       
+       
+                                       $parms = scrape_dfrn($dfrn_url);
+       
+                                       if(! count($parms)) {
+                                               notice( t('Profile location is not valid or does not contain profile information.') . EOL );
                                                return;
                                        }
-                               }
+                                       else {
+                                               if(! x($parms,'fn'))
+                                                       notice( t('Warning: profile location has no identifiable owner name.') . EOL );
+                                               if(! x($parms,'photo'))
+                                                       notice( t('Warning: profile location has no profile photo.') . EOL );
+                                               $invalid = validate_dfrn($parms);               
+                                               if($invalid) {
+                                                       notice( $invalid . t(' required parameter') 
+                                                               . (($invalid == 1) ? t(" was ") : t("s were ") )
+                                                               . t("not found at the given location.") . EOL ) ;
+                                                       return;
+                                               }
+                                       }
 
 
 
-                               $dfrn_request = $parms['dfrn-request'];
+                                       $dfrn_request = $parms['dfrn-request'];
 
-                               dbesc_array($parms);
+                                       dbesc_array($parms);
 
 
-                               $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `photo`, `site-pubkey`,
-                                       `request`, `confirm`, `notify`, `poll`, `aes_allow`) 
-                                       VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', %d)",
-                                       intval($_SESSION['uid']),
-                                       datetime_convert(),
-                                       dbesc($dfrn_url),
-                                       $parms['fn'],
-                                       $parms['photo'],
-                                       $parms['key'],
-                                       $parms['dfrn-request'],
-                                       $parms['dfrn-confirm'],
-                                       $parms['dfrn-notify'],
-                                       $parms['dfrn-poll'],
-                                       intval($aes_allow)
-                               );
-                       }
+                                       $r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `photo`, `site-pubkey`,
+                                               `request`, `confirm`, `notify`, `poll`, `aes_allow`) 
+                                               VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', %d)",
+                                               intval(get_uid()),
+                                               datetime_convert(),
+                                               dbesc($dfrn_url),
+                                               $parms['fn'],
+                                               $parms['photo'],
+                                               $parms['key'],
+                                               $parms['dfrn-request'],
+                                               $parms['dfrn-confirm'],
+                                               $parms['dfrn-notify'],
+                                               $parms['dfrn-poll'],
+                                               intval($aes_allow)
+                                       );
+                               }
 
-                       if($r) {
-                               notice( "Introduction complete." . EOL);
-                       }
+                               if($r) {
+                                       notice( t("Introduction complete.") . EOL);
+                               }
 
-                       // Allow the blocked remote notification to complete
+                               // Allow the blocked remote notification to complete
 
-                       if(is_array($contact_record))
-                               $dfrn_request = $contact_record['request'];
+                               if(is_array($contact_record))
+                                       $dfrn_request = $contact_record['request'];
 
-                       if(strlen($dfrn_request) && strlen($confirm_key))
-                               $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
-                               // ignore reply
-                       goaway($dfrn_url);
-                       // NOTREACHED
+                               if(strlen($dfrn_request) && strlen($confirm_key))
+                                       $s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
+                                       // ignore reply
+                               goaway($dfrn_url);
+                               return; // NOTREACHED
+
+                       }
 
                }
-               // invalid DFRN-url
-               notice( "Unrecoverable protocol error." . EOL );
+
+               // invalid/bogus request
+
+               notice( t('Unrecoverable protocol error.') . EOL );
                goaway($a->get_baseurl());
+               return; // NOTREACHED
        }
 
+       // Otherwise:
+
+       // We are the requestee. A person from a remote cell has made an introduction 
+       // on our profile web page and clicked submit. We will use their DFRN-URL to 
+       // figure out how to contact their cell.  
 
-       // we are operating as a remote site and an introduction was requested of us.
        // Scrape the originating DFRN-URL for everything we need. Create a contact record
        // and an introduction to show our user next time he/she logs in.
-       // Finally redirect back to the originator so that their site can record the request.
-       // If our user confirms the request, a record of it will need to exist on the 
-       // originator's site in order for the confirmation process to complete.. 
+       // Finally redirect back to the requestor so that their site can record the request.
+       // If our user (the requestee) later confirms this request, a record of it will need 
+       // to exist on the requestor's cell in order for the confirmation process to complete.. 
 
-       if($a->profile['nickname'])
-               $tailname = $a->profile['nickname'];
-       else
-               $tailname = $a->profile['uid'];
+       // It's possible that neither the requestor or the requestee are logged in at the moment,
+       // and the requestor does not yet have any credentials to the requestee profile.
 
+       // Who is the requestee? We've already loaded their profile which means their nickname should be
+       // in $a->argv[1] and we should have their complete info in $a->profile.
+
+       if(! (is_array($a->profile) && count($a->profile))) {
+               notice( t('Profile unavailable.') . EOL);
+               return;
+       }
+
+       $nickname = $a->profile['nickname'];
+       $notify_flags = $a->profile['notify-flags'];
        $uid = $a->profile['uid'];
 
        $contact_record = null;
@@ -162,10 +175,18 @@ function dfrn_request_post(&$a) {
 
                $url = trim($_POST['dfrn_url']);
                if(! strlen($url)) {
-                       notice( "Invalid URL" . EOL );
+                       notice( t("Invalid locator") . EOL );
                        return;
                }
 
+               // Canonicalise email-style profile locator
+
+               $url = webfinger($url);
+
+               if(! strlen($url)) {
+                       notice( t("Unable to resolve your name at the provided location.") . EOL);                      
+                       return;
+               }
 
                $ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1", 
                        intval($uid),
@@ -174,7 +195,7 @@ function dfrn_request_post(&$a) {
 
                if(count($ret)) {
                        if(strlen($ret[0]['issued-id'])) {
-                               notice( 'You have already introduced yourself here.' . EOL );
+                               notice( t('You have already introduced yourself here.') . EOL );
                                return;
                        }
                        else {
@@ -187,31 +208,43 @@ function dfrn_request_post(&$a) {
                if(is_array($contact_record)) {
                        // There is a contact record but no issued-id, so this
                        // is a reciprocal introduction from a known contact
-                       $r = q("UPDATE `contact` SET `issued-id` = '%s', `ret-blocked` = 1 WHERE `id` = %d LIMIT 1",
+                       $r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d LIMIT 1",
                                dbesc($issued_id),
                                intval($contact_record['id'])
                        );
                }
                else {
-       
+                       if(! validate_url($url)) {
+                               notice( t('Invalid profile URL.') . EOL);
+                               goaway($a->get_baseurl() . '/' . $a->cmd);
+                               return; // NOTREACHED
+                       }
+
+                       if(! allowed_url($url)) {
+                               notice( t('Disallowed profile URL.') . EOL);
+                               goaway($a->get_baseurl() . '/' . $a->cmd);
+                               return; // NOTREACHED
+                       }
+                       
+
                        require_once('Scrape.php');
 
                        $parms = scrape_dfrn($url);
 
                        if(! count($parms)) {
-                               notice( 'URL is not valid or does not contain profile information.' . EOL );
-                               killme();
+                               notice( t('Profile location is not valid or does not contain profile information.') . EOL );
+                               goaway($a->get_baseurl() . '/' . $a->cmd);
                        }
                        else {
                                if(! x($parms,'fn'))
-                                       notice( 'Warning: DFRN profile has no identifiable owner name.' . EOL );
+                                       notice( t('Warning: profile location has no identifiable owner name.') . EOL );
                                if(! x($parms,'photo'))
-                                       notice( 'Warning: DFRN profile has no profile photo.' . EOL );
+                                       notice( t('Warning: profile location has no profile photo.') . EOL );
                                $invalid = validate_dfrn($parms);               
                                if($invalid) {
-                                       notice( $invalid . ' required DFRN parameter' 
-                                               . (($invalid == 1) ? " was " : "s were " )
-                                               . "not found at the given URL" . EOL) ;
+                                       notice( $invalid . t(' required parameter') 
+                                               . (($invalid == 1) ? t(" was ") : t("s were ") )
+                                               . t("not found at the given location.") . EOL ) ;
 
                                        return;
                                }
@@ -242,7 +275,7 @@ function dfrn_request_post(&$a) {
                        // find the contact record we just created
                        if($r) {        
                                $r = q("SELECT `id` FROM `contact` 
-                                       WHERE `uid` = '%s' AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
+                                       WHERE `uid` = %d AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
                                        intval($uid),
                                        $parms['url'],
                                        $parms['issued-id']
@@ -253,7 +286,7 @@ function dfrn_request_post(&$a) {
        
                }
                if($r === false) {
-                       notice( 'Failed to update contact record.' . EOL );
+                       notice( t('Failed to update contact record.') . EOL );
                        return;
                }
 
@@ -265,29 +298,33 @@ function dfrn_request_post(&$a) {
                                intval($uid),
                                intval($contact_record['id']),
                                ((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
-                               dbesc(trim($_POST['dfrn-request-message'])),
+                               dbesc(notags(trim($_POST['dfrn-request-message']))),
                                dbesc($hash),
                                dbesc(datetime_convert())
                        );
                }
        
-               // TODO: send an email notification if our user wants one
+
+               // This notice will only be seen by the requestor if  the requestor and requestee are on the same server.
 
                if(! $failed) 
-                       notice( "Your introduction has been sent." . EOL );
+                       notice( t('Your introduction has been sent.') . EOL );
 
                // "Homecoming" - send the requestor back to their site to record the introduction.
 
-               $dfrn_url = bin2hex($a->get_baseurl() . "/profile/$tailname");
+               $dfrn_url = bin2hex($a->get_baseurl() . '/profile/' . $nickname);
                $aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
 
                goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url" . '&confirm_key=' . $hash . (($aes_allow) ? "&aes_allow=1" : ""));
-               // NOTREACHED
+               return; // NOTREACHED
 
        }
        return;
 }}
 
+
+
+
 if(! function_exists('dfrn_request_content')) {
 function dfrn_request_content(&$a) {
 
@@ -304,48 +341,85 @@ function dfrn_request_content(&$a) {
        if(x($_GET,'dfrn_url')) {
 
                if(! local_user()) {
-                       notice( "Please login to confirm introduction." . EOL );
+                       notice( t("Please login to confirm introduction.") . EOL );
                        return login();
                }
 
                // Edge case, but can easily happen in the wild. This person is authenticated, 
                // but not as the person who needs to deal with this request.
 
-               if (($_SESSION['uid'] != $a->argv[1]) && ($a->user['nickname'] != $a->argv[1])) {
-                       notice( "Incorrect identity currently logged in. Please login to <strong>this</strong> profile." . EOL);
+               if ($a->user['nickname'] != $a->argv[1]) {
+                       notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
                        return login();
                }
 
-               $dfrn_url = notags(trim(pack("H*" , $_GET['dfrn_url'])));
+               $dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
                $aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
                $confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
-               $o .= file_get_contents("view/dfrn_req_confirm.tpl");
+               $o .= load_view_file("view/dfrn_req_confirm.tpl");
                $o  = replace_macros($o,array(
                        '$dfrn_url' => $dfrn_url,
                        '$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
                        '$confirm_key' => $confirm_key,
                        '$username' => $a->user['username'], 
                        '$uid' => $_SESSION['uid'],
+                       '$nickname' => $a->user['nickname'],
                        'dfrn_rawurl' => $_GET['dfrn_url']
                        ));
                return $o;
 
        }
-       else {
-               // we are the requestee and it is now safe to send our user their introduction
-               if((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
+       elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) { 
+
+               // we are the requestee and it is now safe to send our user their introduction,
+               // We could just unblock it, but first we have to jump through a few hoops to 
+               // send an email, or even to find out if we need to send an email. 
+
+               $intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
+                       dbesc($_GET['confirm_key'])
+               );
+
+               if(count($intro)) {
+
+                       $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
+                               WHERE `contact`.`id` = %d LIMIT 1",
+                               intval($intro[0]['contact-id'])
+                       );
+                       if(count($r)) {
+
+                               if($r[0]['notify-flags'] & NOTIFY_INTRO) {
+                                       $email_tpl = load_view_file('view/request_notify_eml.tpl');
+                                       $email = replace_macros($email_tpl, array(
+                                               '$requestor' => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
+                                               '$url' => stripslashes($r[0]['url']),
+                                               '$myname' => $r[0]['username'],
+                                               '$siteurl' => $a->get_baseurl(),
+                                               '$sitename' => $a->config['sitename']
+                                       ));
+                                       $res = mail($r[0]['email'], 
+                                               t("Introduction received at ") . $a->config['sitename'],
+                                               $email,
+                                               'From: ' . t('Administrator') . '@' . $_SERVER[SERVER_NAME] );
+                                       // This is a redundant notification - no point throwing errors if it fails.
+                               }
+                       }
+
                        $r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s' LIMIT 1",
                                dbesc($_GET['confirm_key'])
                        );
-                       killme();
-               }
 
+               }
+               killme();
+               return; // NOTREACHED
+       }
+       else {
 
-       // Outside request. Display our user's introduction form. 
-
+               // Normal web request. Display our user's introduction form. 
 
-       $o = file_get_contents("view/dfrn_request.tpl");
-       $o = replace_macros($o,array('$uid' => $a->profile['uid']));
-       return $o;
+               $o = load_view_file("view/dfrn_request.tpl");
+               $o = replace_macros($o,array('$nickname' => $a->argv[1]));
+               return $o;
        }
+
+       return; // Somebody is fishing.
 }}
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