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Ray
2025-09-05 23:10:13 +02:00
parent b2684a9c38
commit 446f015ac5
1 changed files with 7 additions and 6 deletions
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13
src/rcore.c
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@@ -2671,24 +2671,25 @@ unsigned char *DecodeDataBase64(const char *text, int *outputSize)
for (int i = 0; i < dataSize;) for (int i = 0; i < dataSize;)
{ {
// Every 4 sixtets must generate 3 octets // Every 4 sixtets must generate 3 octets
if (i + 2 >= dataSize) if ((i + 2) >= dataSize)
{ {
TRACELOG(LOG_WARNING, "BASE64 decoding error: Input data size is not valid"); TRACELOG(LOG_WARNING, "BASE64: Decoding error: Input data size is not valid");
break; break;
} }
unsigned int sixtetA = base64DecodeTable[(unsigned char)text[i]]; unsigned int sixtetA = base64DecodeTable[(unsigned char)text[i]];
unsigned int sixtetB = base64DecodeTable[(unsigned char)text[i + 1]]; unsigned int sixtetB = base64DecodeTable[(unsigned char)text[i + 1]];
unsigned int sixtetC = (i + 2 < dataSize && (unsigned char)text[i + 2] != '=')? base64DecodeTable[(unsigned char)text[i + 2]] : 0; unsigned int sixtetC = (((i + 2) < dataSize) && (unsigned char)text[i + 2] != '=')? base64DecodeTable[(unsigned char)text[i + 2]] : 0;
unsigned int sixtetD = (i + 3 < dataSize && (unsigned char)text[i + 3] != '=')? base64DecodeTable[(unsigned char)text[i + 3]] : 0; unsigned int sixtetD = (((i + 3) < dataSize) && (unsigned char)text[i + 3] != '=')? base64DecodeTable[(unsigned char)text[i + 3]] : 0;
unsigned int octetPack = (sixtetA << 18) | (sixtetB << 12) | (sixtetC << 6) | sixtetD; unsigned int octetPack = (sixtetA << 18) | (sixtetB << 12) | (sixtetC << 6) | sixtetD;
if (outputCount + 3 > maxOutputSize) if ((outputCount + 3) > maxOutputSize)
{ {
TRACELOG(LOG_WARNING, "BASE64 decoding: Output data size is too small"); TRACELOG(LOG_WARNING, "BASE64: Decoding error: Output data size is too small");
break; break;
} }
decodedData[outputCount + 0] = (octetPack >> 16) & 0xff; decodedData[outputCount + 0] = (octetPack >> 16) & 0xff;
decodedData[outputCount + 1] = (octetPack >> 8) & 0xff; decodedData[outputCount + 1] = (octetPack >> 8) & 0xff;
decodedData[outputCount + 2] = octetPack & 0xff; decodedData[outputCount + 2] = octetPack & 0xff;