On 07/22/2014 10:20 AM, shaohef@linux.vnet.ibm.com wrote:
From: ShaoHe Feng <shaohef@linux.vnet.ibm.com>
Most webs use safe url base64 encode/decode to escape the special characters. For special characters, there are functions called encodeURIComponent()/decodeURIComponent() which are designed to do this. (See: http://www.w3schools.com/jsref/jsref_encodeURIComponent.asp , http://www.w3schools.com/jsref/jsref_decodeuricomponent.asp)
For binary data (e.g. images), especially transferred between back-end and front-end through AJAX, Base64 is the choice.
base64 encode/decode is similar to base64 safe url encode/decode.
The difference is the alphabet. The base64 safe url alphabet uses '-' instead of '+' and '_' instead of '/'.
after this patch: In backend, we can encode an url:
base64.urlsafe_b64encode("/vnc_auto.html?port=64667&path=?token=opensuse12&encrypt=1") 'L3ZuY19hdXRvLmh0bWw_cG9ydD02NDY2NyZwYXRoPT90b2tlbj1vcGVuc3VzZTEyJmVuY3J5cHQ9MQ==' and in UI, we can decode it: kimchi.urlSafeB64Decode("L3ZuY19hdXRvLmh0bWw_cG9ydD02NDY2NyZwYXRoPT90b2tlbj1vcGVuc3VzZTEyJmVuY3J5cHQ9MQ==") "/vnc_auto.html?port=64667&path=?token=opensuse12&encrypt=1"
or
In UI, we can encode an url: kimchi.urlSafeB64Encode("/vnc_auto.html?port=64667&path=?token=opensuse12&encrypt=1") "L3ZuY19hdXRvLmh0bWw_cG9ydD02NDY2NyZwYXRoPT90b2tlbj1vcGVuc3VzZTEyJmVuY3J5cHQ9MQ==" and in backend, we can decode it:
base64.urlsafe_b64decode("L3ZuY19hdXRvLmh0bWw_cG9ydD02NDY2NyZwYXRoPT90b2tlbj1vcGVuc3VzZTEyJmVuY3J5cHQ9MQ==") '/vnc_auto.html?port=64667&path=?token=opensuse12&encrypt=1'
Safe url base64 is a variant of base64. More info: http://en.wikipedia.org/wiki/Base64#Implementations_and_history
Signed-off-by: ShaoHe Feng <shaohef@linux.vnet.ibm.com> --- ui/js/src/kimchi.utils.js | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/ui/js/src/kimchi.utils.js b/ui/js/src/kimchi.utils.js index c7103f8..480b9b5 100644 --- a/ui/js/src/kimchi.utils.js +++ b/ui/js/src/kimchi.utils.js @@ -183,3 +183,11 @@ kimchi.escapeStr = function(str) {
return str; }; + +kimchi.urlSafeB64Decode = function(str) { + return atob(str.replace(/-/g, '+').replace(/_/g, '/')); +} + +kimchi.urlSafeB64Encode = function(str) { + return btoa(str).replace(/\+/g, '-').replace(/\//g, '_'); +}