Update of /cvsroot/binaryphp/binaryphp/functions/base
In directory sc8-pr-cvs1:/tmp/cvs-serv23429/functions/base
Added Files:
base64.h base64_decode.cpp base64_encode.cpp
Log Message:
by Derek Ford
if there are any troubles with these, email me at shadowed at asleep dot net.
--- NEW FILE: base64.h ---
extern unsigned char *php_base64_encode(const unsigned char *, int);
extern unsigned char *php_base64_decode(const unsigned char *, int);
static const char base64_table[] =
{ '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', '+', '/', '\0'
};
static const char base64_pad = '=';
static const short base64_reverse_table[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
unsigned char *php_base64_encode(const unsigned char *str, int length)
{
const unsigned char *current = str;
int i = 0;
unsigned char *result = new unsigned char[((length + 3 - length % 3) * 4 / 3 + 1) * sizeof(char)];
while (length > 2) { /* keep going until we have less than 24 bits */
result[i++] = base64_table[current[0] >> 2];
result[i++] = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)];
result[i++] = base64_table[((current[1] & 0x0f) << 2) + (current[2] >> 6)];
result[i++] = base64_table[current[2] & 0x3f];
current += 3;
length -= 3; /* we just handle 3 octets of data */
}
/* now deal with the tail end of things */
if (length != 0) {
result[i++] = base64_table[current[0] >> 2];
if (length > 1) {
result[i++] = base64_table[((current[0] & 0x03) << 4) + (current[1] >> 4)];
result[i++] = base64_table[(current[1] & 0x0f) << 2];
result[i++] = base64_pad;
}
else {
result[i++] = base64_table[(current[0] & 0x03) << 4];
result[i++] = base64_pad;
result[i++] = base64_pad;
}
}
result[i] = '\0';
return result;
}
unsigned char *php_base64_decode(const unsigned char *str, int length)
{
const unsigned char *current = str;
int ch, i = 0, j = 0, k;
/* this sucks for threaded environments */
unsigned char *result;
result = new unsigned char[(length + 1)];
if (result == NULL) {
return NULL;
}
/* run through the whole string, converting as we go */
while ((ch = *current++) != '\0' && length-- > 0) {
if (ch == base64_pad) break;
/* When Base64 gets POSTed, all pluses are interpreted as spaces.
This line changes them back. It's not exactly the Base64 spec,
but it is completely compatible with it (the spec says that
spaces are invalid). This will also save many people considerable
headache. - Turadg Aleahmad <tu...@wi...>
*/
if (ch == ' ') ch = '+';
ch = base64_reverse_table[ch];
if (ch < 0) continue;
switch(i % 4) {
case 0:
result[j] = ch << 2;
break;
case 1:
result[j++] |= ch >> 4;
result[j] = (ch & 0x0f) << 4;
break;
case 2:
result[j++] |= ch >>2;
result[j] = (ch & 0x03) << 6;
break;
case 3:
result[j++] |= ch;
break;
}
i++;
}
k = j;
/* mop things up if we ended on a boundary */
if (ch == base64_pad) {
switch(i % 4) {
case 0:
case 1:
delete result;
return NULL;
case 2:
k++;
case 3:
result[k++] = 0;
}
}
result[j] = '\0';
return result;
}
--- NEW FILE: base64_decode.cpp ---
php_var base64_decode(php_var str)
{
unsigned char *result;
php_var str_len;
str_len = strlen(str);
result = php_base64_decode(str, str_len);
if( result != NULL )
{
return result;
} else {
return false;
}
}
--- NEW FILE: base64_encode.cpp ---
php_var base64_encode(php_var str)
{
unsigned char *result;
php_var str_len;
str_len = strlen(str);
result = php_base64_encode(str, str_len);
if( result != NULL )
{
return result;
} else {
return false;
}
}
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