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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "config.h"
      6 #include "platform/network/ContentSecurityPolicyParsers.h"
      7 
      8 #include "wtf/ASCIICType.h"
      9 
     10 namespace blink {
     11 
     12 bool isCSPDirectiveNameCharacter(UChar c)
     13 {
     14     return isASCIIAlphanumeric(c) || c == '-';
     15 }
     16 
     17 bool isCSPDirectiveValueCharacter(UChar c)
     18 {
     19     return isASCIISpace(c) || (c >= 0x21 && c <= 0x7e); // Whitespace + VCHAR
     20 }
     21 
     22 // Only checks for general Base64 encoded chars, not '=' chars since '=' is
     23 // positional and may only appear at the end of a Base64 encoded string.
     24 bool isBase64EncodedCharacter(UChar c)
     25 {
     26     return isASCIIAlphanumeric(c) || c == '+' || c == '/';
     27 }
     28 
     29 bool isNonceCharacter(UChar c)
     30 {
     31     return isBase64EncodedCharacter(c) || c == '=';
     32 }
     33 
     34 bool isSourceCharacter(UChar c)
     35 {
     36     return !isASCIISpace(c);
     37 }
     38 
     39 bool isPathComponentCharacter(UChar c)
     40 {
     41     return c != '?' && c != '#';
     42 }
     43 
     44 bool isHostCharacter(UChar c)
     45 {
     46     return isASCIIAlphanumeric(c) || c == '-';
     47 }
     48 
     49 bool isSchemeContinuationCharacter(UChar c)
     50 {
     51     return isASCIIAlphanumeric(c) || c == '+' || c == '-' || c == '.';
     52 }
     53 
     54 bool isNotASCIISpace(UChar c)
     55 {
     56     return !isASCIISpace(c);
     57 }
     58 
     59 bool isNotColonOrSlash(UChar c)
     60 {
     61     return c != ':' && c != '/';
     62 }
     63 
     64 bool isMediaTypeCharacter(UChar c)
     65 {
     66     return !isASCIISpace(c) && c != '/';
     67 }
     68 
     69 } // namespace
     70