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authorEvan Prodromou <evan@controlezvous.ca>2008-06-22 12:32:41 -0400
committerEvan Prodromou <evan@controlezvous.ca>2008-06-22 12:32:41 -0400
commit8a170ed8fd014cb7640b04c535a359b3275681fd (patch)
tree9dcfbd67db4df4d5930d92b8d13d60002a2ba37d /lib/util.php
parent1906237ddc5c74e385dd6c722457dfc819937114 (diff)
special function for generating confirmation codes
darcs-hash:20080622163241-34904-199b3654328d78c0b9fe2fa85a3ecc1ab0b1262a.gz
Diffstat (limited to 'lib/util.php')
-rw-r--r--lib/util.php15
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/util.php b/lib/util.php
index 49349a72f..18043e867 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -927,3 +927,18 @@ function common_notice_uri(&$notice) {
return common_local_url('shownotice',
array('notice' => $notice->id));
}
+
+# 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
+
+define('CODECHARS', '23456789ABCDEFGHJKLMNPQRSTUVWXYZ');
+
+function common_confirmation_code($bits) {
+ $chars = ceil($bits/5);
+ $code = '';
+ for ($i = 0; $i < $chars; $i++) {
+ # XXX: convert to string and back
+ $num = hexdec(common_good_rand(1));
+ $code .= CODECHARS[$num%32];
+ }
+ return $code;
+}