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base64: Make base64 encoding tables public

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This makes them reusable.  Change the character type to uint8_t.
This commit is contained in:
Sebastian Huber
2023-12-11 10:47:45 +01:00
parent 317df86ba3
commit c90e2b2fb2
2 changed files with 27 additions and 7 deletions
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24
cpukit/base64/base64-encode.c
View File

@@ -37,7 +37,7 @@ _Base64_Put(int c, void *arg, IO_Put_char put_char)
static int static int
_Base64_Do_encode(IO_Put_char put_char, void *arg, const void *src, _Base64_Do_encode(IO_Put_char put_char, void *arg, const void *src,
size_t srclen, const char *wordbreak, int wordlen, const char *encoding) size_t srclen, const char *wordbreak, int wordlen, const uint8_t *encoding)
{ {
unsigned int loops = 0; unsigned int loops = 0;
const unsigned char *in = src; const unsigned char *in = src;
@@ -88,24 +88,34 @@ _Base64_Do_encode(IO_Put_char put_char, void *arg, const void *src,
return out; return out;
} }
static const char base64[] = const uint8_t _Base64_Encoding[64] = {
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '+', '/'
};
int int
_Base64_Encode(IO_Put_char put_char, void *arg, const void *src, size_t srclen, _Base64_Encode(IO_Put_char put_char, void *arg, const void *src, size_t srclen,
const char *wordbreak, int wordlen) const char *wordbreak, int wordlen)
{ {
return _Base64_Do_encode(put_char, arg, src, srclen, wordbreak, return _Base64_Do_encode(put_char, arg, src, srclen, wordbreak,
wordlen, base64); wordlen, _Base64_Encoding);
} }
static const char base64url[] = const uint8_t _Base64url_Encoding[64] = {
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_="; 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '-', '_'
};
int int
_Base64url_Encode(IO_Put_char put_char, void *arg, const void *src, _Base64url_Encode(IO_Put_char put_char, void *arg, const void *src,
size_t srclen, const char *wordbreak, int wordlen) size_t srclen, const char *wordbreak, int wordlen)
{ {
return _Base64_Do_encode(put_char, arg, src, srclen, wordbreak, return _Base64_Do_encode(put_char, arg, src, srclen, wordbreak,
wordlen, base64url); wordlen, _Base64url_Encoding);
} }

10
cpukit/include/rtems/base64.h
View File

@@ -54,6 +54,16 @@ extern "C" {
* @{ * @{
*/ */
/**
* @brief Maps a 6-bit integer to the corresponding base64 encoding.
*/
extern const uint8_t _Base64_Encoding[ 64 ];
/**
* @brief Maps a 6-bit integer to the corresponding base64url encoding.
*/
extern const uint8_t _Base64url_Encoding[ 64 ];
/** /**
* @brief Outputs the source buffer in base64 encoding. * @brief Outputs the source buffer in base64 encoding.
* *