diff options
| -rw-r--r-- | include/text.php | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/include/text.php b/include/text.php index e0910f83e..bd2df45aa 100644 --- a/include/text.php +++ b/include/text.php @@ -2156,12 +2156,12 @@ function base64url_encode($s, $strip_padding = true) { return $s; } -function base64url_decode($s) { +function base64url_decode($s, $strict = false) { if(is_array($s)) { logger('base64url_decode: illegal input: ' . print_r(debug_backtrace(), true)); return $s; } - return base64_decode(strtr($s,'-_','+/')); + return base64_decode(strtr($s,'-_','+/'), $strict); } @@ -2175,12 +2175,12 @@ function base64special_encode($s, $strip_padding = true) { return $s; } -function base64special_decode($s) { +function base64special_decode($s, $strict = false) { if(is_array($s)) { logger('base64url_decode: illegal input: ' . print_r(debug_backtrace(), true)); return $s; } - return base64_decode(strtr($s,',.','+/')); + return base64_decode(strtr($s,',.','+/'), $strict); } /** @@ -3589,6 +3589,21 @@ function gen_link_id($mid) { return $mid; } +/** + * @brief check if the provided string starts with 'b64.' and try to decode it if so. + * If it could be decoded return the decoded string or false if decoding failed. + * If the string does not start with 'b64.', return the string as is. + * + * @param string $mid + * @return string|boolean false + */ +function unpack_link_id($mid) { + if (is_string($mid) && strpos($mid, 'b64.') === 0) { + $mid = @base64url_decode(substr($mid, 4), true); + return $mid; + } + return $mid; +} // callback for array_walk |