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Curl_base64_decode() fixed by Matthew B

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This commit is contained in:
Daniel Stenberg 2002-12-19 16:02:51 +00:00
parent 39dc14c002
commit 1698015e3c
1 changed files with 6 additions and 2 deletions
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8
lib/base64.c
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@ -61,6 +61,8 @@ static void decodeQuantum(unsigned char *dest, char *src)
x = (x << 6) + 62;
else if(src[i] == '/')
x = (x << 6) + 63;
else if(src[i] == '=')
x = (x << 6);
}
dest[2] = (unsigned char)(x & 255); x >>= 8;
@ -78,6 +80,7 @@ static void base64Decode(unsigned char *dest, char *src, int *rawLength)
int length = 0;
int equalsTerm = 0;
int i;
int numQuantums;
unsigned char lastQuantum[3];
while((src[length] != '=') && src[length])
@ -85,10 +88,11 @@ static void base64Decode(unsigned char *dest, char *src, int *rawLength)
while(src[length+equalsTerm] == '=')
equalsTerm++;
numQuantums = (length + equalsTerm) / 4;
if(rawLength)
*rawLength = (length * 3 / 4) - equalsTerm;
*rawLength = (numQuantums * 3) - equalsTerm;
for(i = 0; i < length/4 - 1; i++) {
for(i = 0; i < numQuantums - 1; i++) {
decodeQuantum(dest, src);
dest += 3; src += 4;
}