I thought I\u2019d share another injection attack defense that I use on my sites. You can buy my stuff from Gumroad and I have a page where I list all of the Mac titles and a page where I list all of the Windows titles. I use one php script for both and there are only two choices for the page variable, ‘Mac’ or ‘Win’. It should\u2019t happen but I allow for no values as well.<\/p>\n
\n\/\/ I get the data for the page from a database, and you need one if you use \n\/\/ mysql_real_escape_string() so it goes first.\nrequire_once('db_my.inc');\n\nif ( isset($_GET['page']) ) { \n $platform = mysql_real_escape_string($_GET['page']); \n \n \/\/ Platform can only be Mac or Win, so make injection attacks go away\n if ( strlen($platform) > 3 ) {\n $url = $_SERVER['REQUEST_URI'];\n $ref = $_SERVER['HTTP_REFERER'];\n error_log("long string in CDs.php: URL is $url and referrer is $ref");\n header("HTTP\/1.0 404 Not Found");\n die();\n }\n\n\/\/ If there is no $platform, they probably want to buy a title that works on \n\/\/ the platform they are visiting the site with\n} else { \n $user_agent = $_SERVER['HTTP_USER_AGENT']; \n $platform = 'Win'; \/\/ Default to windows\n if (preg_match('\/macintosh|mac os x\/i', $user_agent)) {\n $platform = 'Mac';\n }\n}\n<\/code><\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"I thought I\u2019d share another injection attack defense that I use on my sites. You can buy my stuff from Gumroad and I have a page where I list all of the Mac titles and a page where I list all of the Windows titles. I use one php script for both and there are … Continue reading Injection attacks revisited.<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1845","post","type-post","status-publish","format-standard","hentry","category-coding"],"_links":{"self":[{"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=\/wp\/v2\/posts\/1845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1845"}],"version-history":[{"count":0,"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=\/wp\/v2\/posts\/1845\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wellgolly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}