Mercurial > trustbridge > nss-cmake-static
annotate nspr/lib/libc/src/base64.c @ 0:1e5118fa0cb1
This is NSS with a Cmake Buildsyste
To compile a static NSS library for Windows we've used the
Chromium-NSS fork and added a Cmake buildsystem to compile
it statically for Windows. See README.chromium for chromium
changes and README.trustbridge for our modifications.
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Mon, 28 Jul 2014 10:47:06 +0200 |
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rev | line source |
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0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 /* This Source Code Form is subject to the terms of the Mozilla Public |
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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5 |
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6 #include "plbase64.h" |
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7 #include "prlog.h" /* For PR_NOT_REACHED */ |
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8 #include "prmem.h" /* for malloc / PR_MALLOC */ |
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9 |
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10 #include <string.h> /* for strlen */ |
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11 |
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12 static unsigned char *base = (unsigned char *)"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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13 |
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14 static void |
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15 encode3to4 |
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16 ( |
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17 const unsigned char *src, |
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18 unsigned char *dest |
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19 ) |
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20 { |
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21 PRUint32 b32 = (PRUint32)0; |
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22 PRIntn i, j = 18; |
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23 |
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24 for( i = 0; i < 3; i++ ) |
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25 { |
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26 b32 <<= 8; |
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27 b32 |= (PRUint32)src[i]; |
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28 } |
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29 |
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30 for( i = 0; i < 4; i++ ) |
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31 { |
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32 dest[i] = base[ (PRUint32)((b32>>j) & 0x3F) ]; |
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33 j -= 6; |
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34 } |
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35 |
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36 return; |
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37 } |
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38 |
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39 static void |
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40 encode2to4 |
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41 ( |
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42 const unsigned char *src, |
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43 unsigned char *dest |
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44 ) |
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45 { |
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46 dest[0] = base[ (PRUint32)((src[0]>>2) & 0x3F) ]; |
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47 dest[1] = base[ (PRUint32)(((src[0] & 0x03) << 4) | ((src[1] >> 4) & 0x0F)) ]; |
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48 dest[2] = base[ (PRUint32)((src[1] & 0x0F) << 2) ]; |
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49 dest[3] = (unsigned char)'='; |
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50 return; |
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51 } |
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52 |
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53 static void |
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54 encode1to4 |
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55 ( |
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56 const unsigned char *src, |
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57 unsigned char *dest |
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58 ) |
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59 { |
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60 dest[0] = base[ (PRUint32)((src[0]>>2) & 0x3F) ]; |
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61 dest[1] = base[ (PRUint32)((src[0] & 0x03) << 4) ]; |
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62 dest[2] = (unsigned char)'='; |
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63 dest[3] = (unsigned char)'='; |
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64 return; |
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65 } |
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66 |
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67 static void |
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68 encode |
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69 ( |
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70 const unsigned char *src, |
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71 PRUint32 srclen, |
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72 unsigned char *dest |
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73 ) |
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74 { |
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75 while( srclen >= 3 ) |
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76 { |
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77 encode3to4(src, dest); |
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78 src += 3; |
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79 dest += 4; |
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80 srclen -= 3; |
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81 } |
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82 |
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83 switch( srclen ) |
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84 { |
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85 case 2: |
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86 encode2to4(src, dest); |
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87 break; |
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88 case 1: |
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89 encode1to4(src, dest); |
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90 break; |
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91 case 0: |
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92 break; |
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93 default: |
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94 PR_NOT_REACHED("coding error"); |
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95 } |
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96 |
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97 return; |
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98 } |
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99 |
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100 /* |
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101 * PL_Base64Encode |
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102 * |
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103 * If the destination argument is NULL, a return buffer is |
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104 * allocated, and the data therein will be null-terminated. |
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105 * If the destination argument is not NULL, it is assumed to |
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106 * be of sufficient size, and the contents will not be null- |
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107 * terminated by this routine. |
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108 * |
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109 * Returns null if the allocation fails. |
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110 */ |
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111 |
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112 PR_IMPLEMENT(char *) |
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113 PL_Base64Encode |
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114 ( |
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115 const char *src, |
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116 PRUint32 srclen, |
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117 char *dest |
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118 ) |
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119 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
120 if( 0 == srclen ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
121 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
122 size_t len = strlen(src); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
123 srclen = len; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
124 /* Detect truncation. */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
125 if( srclen != len ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
126 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
127 return (char *)0; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
128 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
129 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
130 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
131 if( (char *)0 == dest ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
132 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
133 PRUint32 destlen; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
134 /* Ensure all PRUint32 values stay within range. */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
135 if( srclen > (PR_UINT32_MAX/4) * 3 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
136 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
137 return (char *)0; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
138 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
139 destlen = ((srclen + 2)/3) * 4; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
140 dest = (char *)PR_MALLOC(destlen + 1); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
141 if( (char *)0 == dest ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
142 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
143 return (char *)0; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
144 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
145 dest[ destlen ] = (char)0; /* null terminate */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
146 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
147 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
148 encode((const unsigned char *)src, srclen, (unsigned char *)dest); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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149 return dest; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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150 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
151 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
152 static PRInt32 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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153 codetovalue |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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154 ( |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
155 unsigned char c |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
156 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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157 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
158 if( (c >= (unsigned char)'A') && (c <= (unsigned char)'Z') ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
159 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
160 return (PRInt32)(c - (unsigned char)'A'); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
diff
changeset
|
161 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
162 else if( (c >= (unsigned char)'a') && (c <= (unsigned char)'z') ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
163 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
164 return ((PRInt32)(c - (unsigned char)'a') +26); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
diff
changeset
|
165 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
166 else if( (c >= (unsigned char)'0') && (c <= (unsigned char)'9') ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
167 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
168 return ((PRInt32)(c - (unsigned char)'0') +52); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
169 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
170 else if( (unsigned char)'+' == c ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
171 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
172 return (PRInt32)62; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
173 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
174 else if( (unsigned char)'/' == c ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
175 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
176 return (PRInt32)63; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
177 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
178 else |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
179 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
180 return -1; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
181 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
182 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
183 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
184 static PRStatus |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
185 decode4to3 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
186 ( |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
187 const unsigned char *src, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
188 unsigned char *dest |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
189 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
190 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
191 PRUint32 b32 = (PRUint32)0; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
192 PRInt32 bits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
193 PRIntn i; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
194 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
195 for( i = 0; i < 4; i++ ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
196 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
197 bits = codetovalue(src[i]); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
198 if( bits < 0 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
199 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
200 return PR_FAILURE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
201 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
202 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
203 b32 <<= 6; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
204 b32 |= bits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
205 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
206 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
207 dest[0] = (unsigned char)((b32 >> 16) & 0xFF); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
208 dest[1] = (unsigned char)((b32 >> 8) & 0xFF); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
209 dest[2] = (unsigned char)((b32 ) & 0xFF); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
210 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
211 return PR_SUCCESS; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
212 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
213 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
214 static PRStatus |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
215 decode3to2 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
216 ( |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
217 const unsigned char *src, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
218 unsigned char *dest |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
219 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
220 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
221 PRUint32 b32 = (PRUint32)0; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
222 PRInt32 bits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
223 PRUint32 ubits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
224 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
225 bits = codetovalue(src[0]); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
226 if( bits < 0 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
227 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
228 return PR_FAILURE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
229 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
230 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
231 b32 = (PRUint32)bits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
232 b32 <<= 6; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
233 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
234 bits = codetovalue(src[1]); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
235 if( bits < 0 ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
236 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
237 return PR_FAILURE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
238 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
239 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
240 b32 |= (PRUint32)bits; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
241 b32 <<= 4; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
242 |
1e5118fa0cb1
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243 bits = codetovalue(src[2]); |
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244 if( bits < 0 ) |
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245 { |
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246 return PR_FAILURE; |
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247 } |
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248 |
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249 ubits = (PRUint32)bits; |
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250 b32 |= (ubits >> 2); |
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251 |
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252 dest[0] = (unsigned char)((b32 >> 8) & 0xFF); |
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253 dest[1] = (unsigned char)((b32 ) & 0xFF); |
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254 |
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255 return PR_SUCCESS; |
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256 } |
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257 |
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258 static PRStatus |
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259 decode2to1 |
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260 ( |
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261 const unsigned char *src, |
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262 unsigned char *dest |
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263 ) |
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264 { |
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265 PRUint32 b32; |
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266 PRUint32 ubits; |
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267 PRInt32 bits; |
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268 |
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269 bits = codetovalue(src[0]); |
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270 if( bits < 0 ) |
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271 { |
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272 return PR_FAILURE; |
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273 } |
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274 |
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275 ubits = (PRUint32)bits; |
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276 b32 = (ubits << 2); |
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277 |
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278 bits = codetovalue(src[1]); |
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279 if( bits < 0 ) |
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280 { |
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281 return PR_FAILURE; |
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282 } |
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283 |
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284 ubits = (PRUint32)bits; |
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285 b32 |= (ubits >> 4); |
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286 |
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287 dest[0] = (unsigned char)b32; |
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288 |
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289 return PR_SUCCESS; |
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290 } |
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291 |
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292 static PRStatus |
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293 decode |
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294 ( |
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295 const unsigned char *src, |
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296 PRUint32 srclen, |
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297 unsigned char *dest |
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298 ) |
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299 { |
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300 PRStatus rv; |
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301 |
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302 while( srclen >= 4 ) |
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303 { |
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304 rv = decode4to3(src, dest); |
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305 if( PR_SUCCESS != rv ) |
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306 { |
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307 return PR_FAILURE; |
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308 } |
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309 |
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310 src += 4; |
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311 dest += 3; |
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312 srclen -= 4; |
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313 } |
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314 |
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315 switch( srclen ) |
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316 { |
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317 case 3: |
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318 rv = decode3to2(src, dest); |
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319 break; |
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320 case 2: |
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321 rv = decode2to1(src, dest); |
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322 break; |
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323 case 1: |
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324 rv = PR_FAILURE; |
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325 break; |
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326 case 0: |
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327 rv = PR_SUCCESS; |
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328 break; |
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329 default: |
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330 PR_NOT_REACHED("coding error"); |
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331 } |
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332 |
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333 return rv; |
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334 } |
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335 |
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This is NSS with a Cmake Buildsyste
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336 /* |
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337 * PL_Base64Decode |
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338 * |
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339 * If the destination argument is NULL, a return buffer is |
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340 * allocated and the data therein will be null-terminated. |
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341 * If the destination argument is not null, it is assumed |
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342 * to be of sufficient size, and the data will not be null- |
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343 * terminated by this routine. |
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344 * |
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345 * Returns null if the allocation fails, or if the source string is |
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346 * not well-formed. |
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347 */ |
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348 |
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349 PR_IMPLEMENT(char *) |
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350 PL_Base64Decode |
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351 ( |
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|
352 const char *src, |
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353 PRUint32 srclen, |
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This is NSS with a Cmake Buildsyste
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354 char *dest |
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This is NSS with a Cmake Buildsyste
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|
355 ) |
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This is NSS with a Cmake Buildsyste
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parents:
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356 { |
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357 PRStatus status; |
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358 PRBool allocated = PR_FALSE; |
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359 |
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This is NSS with a Cmake Buildsyste
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|
360 if( (char *)0 == src ) |
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This is NSS with a Cmake Buildsyste
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361 { |
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This is NSS with a Cmake Buildsyste
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362 return (char *)0; |
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This is NSS with a Cmake Buildsyste
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parents:
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363 } |
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This is NSS with a Cmake Buildsyste
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|
364 |
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This is NSS with a Cmake Buildsyste
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365 if( 0 == srclen ) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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366 { |
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This is NSS with a Cmake Buildsyste
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367 size_t len = strlen(src); |
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368 srclen = len; |
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369 /* Detect truncation. */ |
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370 if( srclen != len ) |
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371 { |
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372 return (char *)0; |
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373 } |
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374 } |
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375 |
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376 if( srclen && (0 == (srclen & 3)) ) |
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377 { |
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378 if( (char)'=' == src[ srclen-1 ] ) |
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379 { |
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380 if( (char)'=' == src[ srclen-2 ] ) |
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381 { |
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382 srclen -= 2; |
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383 } |
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384 else |
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This is NSS with a Cmake Buildsyste
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385 { |
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386 srclen -= 1; |
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387 } |
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388 } |
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This is NSS with a Cmake Buildsyste
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389 } |
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390 |
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391 if( (char *)0 == dest ) |
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392 { |
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393 /* The following computes ((srclen * 3) / 4) without overflow. */ |
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394 PRUint32 destlen = (srclen / 4) * 3 + ((srclen % 4) * 3) / 4; |
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395 dest = (char *)PR_MALLOC(destlen + 1); |
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396 if( (char *)0 == dest ) |
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397 { |
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398 return (char *)0; |
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399 } |
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400 dest[ destlen ] = (char)0; /* null terminate */ |
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401 allocated = PR_TRUE; |
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This is NSS with a Cmake Buildsyste
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402 } |
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403 |
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404 status = decode((const unsigned char *)src, srclen, (unsigned char *)dest); |
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This is NSS with a Cmake Buildsyste
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405 if( PR_SUCCESS != status ) |
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This is NSS with a Cmake Buildsyste
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406 { |
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407 if( PR_TRUE == allocated ) |
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This is NSS with a Cmake Buildsyste
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408 { |
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This is NSS with a Cmake Buildsyste
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409 PR_DELETE(dest); |
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This is NSS with a Cmake Buildsyste
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410 } |
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This is NSS with a Cmake Buildsyste
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411 |
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This is NSS with a Cmake Buildsyste
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412 return (char *)0; |
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This is NSS with a Cmake Buildsyste
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413 } |
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This is NSS with a Cmake Buildsyste
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414 |
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This is NSS with a Cmake Buildsyste
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415 return dest; |
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This is NSS with a Cmake Buildsyste
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416 } |