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fixed a bug in the base64 hanlding that led to auth failures for some

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passwords with SWAT
This commit is contained in:
Andrew Tridgell -
parent 9fee8c2eb7
commit edcde70108
1 changed files with 6 additions and 2 deletions
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8
source/web/cgi.c
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@ -431,11 +431,11 @@ decode a base64 string in-place - simple and slow algorithm
static void base64_decode(char *s)
{
char *b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int bit_offset, byte_offset, idx, i;
int bit_offset, byte_offset, idx, i, n;
unsigned char *d = (unsigned char *)s;
char *p;
i=0;
n=i=0;
while (*s && (p=strchr(b64,*s))) {
idx = (int)(p - b64);
@ -444,13 +444,17 @@ static void base64_decode(char *s)
d[byte_offset] &= ~((1<<(8-bit_offset))-1);
if (bit_offset < 3) {
d[byte_offset] |= (idx << (2-bit_offset));
n = byte_offset+1;
} else {
d[byte_offset] |= (idx >> (bit_offset-2));
d[byte_offset+1] = 0;
d[byte_offset+1] |= (idx << (8-(bit_offset-2))) & 0xFF;
n = byte_offset+2;
}
s++; i++;
}
/* null terminate */
d[n] = 0;
}