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bugfix: off-by-one error (#5648)

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This commit is contained in:
kokke
2021-10-01 14:48:35 +02:00
committed by GitHub
parent 93f10609f4
commit 36ff442698
1 changed files with 1 additions and 1 deletions
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cores/esp32/libb64/cdecode.c
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@ -12,7 +12,7 @@ static int base64_decode_value_signed(int8_t value_in){
static const int8_t decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-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};
static const int8_t decoding_size = sizeof(decoding);
value_in -= 43;
if (value_in < 0 || value_in > decoding_size) return -1;
if (value_in < 0 || value_in >= decoding_size) return -1;
return decoding[(int)value_in];
}