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correctly filter out invalid base64 characters

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This commit is contained in:
Sander Jansen 2015-05-16 15:05:05 -05:00
parent c4a02a1799
commit c963d3ba04
1 changed files with 3 additions and 3 deletions
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6
taglib/toolkit/tbytevector.cpp
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@ -960,7 +960,7 @@ ByteVector ByteVector::fromBase64(const ByteVector & input)
0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x3e,0x80,0x80,0x80,0x3f,
0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x80,0x80,0x80,0xff,0x80,0x80,
0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x80,0x80,0x80,0x80,0x80,0x80,
0x80,0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,
0x0f,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x80,0x80,0x80,0x80,0x80,
0x80,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
@ -984,12 +984,12 @@ ByteVector ByteVector::fromBase64(const ByteVector & input)
while(4<=len) {
if(base64[src[0]]==0x80) break;
if(base64[src[1]]==0x80) break;
if(base64[src[2]]==0x80) break;
if(base64[src[3]]==0x80) break;
*dst++=((base64[src[0]]<<2)&0xfc)|((base64[src[1]]>>4)&0x03);
if(src[2]!='=') {
if(base64[src[2]]==0x80) break;
*dst++=((base64[src[1]]&0x0f)<<4)|((base64[src[2]]>>2)&0x0f);
if(src[3]!='=') {
if(base64[src[3]]==0x80) break;
*dst++=((base64[src[2]]&0x03)<<6)|(base64[src[3]]&0x3f);
}
else {