I have two editions of a website. The mobile and desktop version. All desktop sections of the website have normal urls and mobile sections have subdomain urls suffixed with the word mobile.


Main desktop site could be: http://core.website.com/
Mobile version of the same site could be: http://core-mobile.website.com/

Main promotional site could be: http://promo.website.com/
Mobile version of the same site could be: http://promo-mobile.website.com/

I want to try to achieve the redirections with mod_rewrite. Currently, I want to include the following lines in htaccess to detect mobile devices:

RewriteCond %{HTTP_USER_AGENT} (android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge\ |maemo|midp|mmp|mobile.+firefox|netfront|opera\ m(ob|in)i|palm(\ os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows\ ce|xda|xiino [NC,OR]
RewriteCond %{HTTP_USER_AGENT} ^(1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a\ wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r\ |s\ )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1\ u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp(\ i|ip)|hs\-c|ht(c(\-|\ |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac(\ |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt(\ |\/)|klon|kpt\ |kwc\-|kyo(c|k)|le(no|xi)|lg(\ g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-|\ |o|v)|zz)|mt(50|p1|v\ )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v\ )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-|\ )|webc|whit|wi(g\ |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-) [NC]

But the real core of the problem lies here:

RewriteCond %{HTTP_COOKIE} !DMOB=1
RewriteCond %{SERVER_NAME} ^(.+)^[(-mobile)]$ [NC]
RewriteRule ^(.*)$ http://%1-mobile/$1 [R=301,NC,L,CO=DMOB:1:.website.com:144000:/]

What I'm trying to accomplish here is the following:

When user visits a website without the -mobile sub-domain suffix, using a mobile device (as detected by the first two long RewriteRule lines) the system checks to see if the cookie named DMOB has a value of 1. If it does then nothing special happens and the requested site loads.

If however, DMOB is not set to 1 and a mobile device IS used, then the mobile sub-domain suffix must be added to the subdomain and then DMOB will be set to 1 starting with the next request and the url will be redirected over to the same thing plus the word -mobile appended to the subdomain name.

I tested it with curl using 1 and 0 for DMOB cookie values and I even tested it without the long mod_rewrite lines.

I think it has something to do with this line:

RewriteCond %{SERVER_NAME} ^(.+)^[(-mobile)]$ [NC]

But at the same time, I think that ^ means negate (or should I use a ! ?)

  • ^ matches the beginning of the line. ! = not. Your rewrite has two ^ which would never fly. ! is traditionally used at the beginning of the regex. So you say to yourself condition is server name not value --or-- !^enter value$ Also do not forget the [OR] where it applies- otherwise it is an AND. – closetnoc Feb 25 '15 at 1:57
  • The first long mod_rewrite rules are or-ed because that detects whether the device is mobile or not. the rest are and-ed – Mike Feb 25 '15 at 3:11
  • This might be a good regex jumping-off point: en.wikipedia.org/wiki/Regular_expression as well as this: regular-expressions.info – closetnoc Feb 25 '15 at 3:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.