6 typedef struct Block Block;
20 if(b->pos >= b->limit)
26 blwrite(void *vb, void *buf, int n)
32 if(n > b->limit - b->pos)
33 n = b->limit - b->pos;
34 memmove(b->pos, buf, n);
40 inflatezlibblock(uchar *dst, int dsize, uchar *src, int ssize)
46 return FlateInputFail;
48 if(((src[0] << 8) | src[1]) % 31)
49 return FlateCorrupted;
50 if((src[0] & ZlibMeth) != ZlibDeflate
51 || (src[0] & ZlibCInfo) > ZlibWin32k)
52 return FlateCorrupted;
55 bs.limit = src + ssize - 6;
58 bd.limit = dst + dsize;
60 ok = inflate(&bd, blwrite, &bs, blgetc);
64 if(adler32(1, dst, bd.pos - dst) != ((bs.pos[0] << 24) | (bs.pos[1] << 16) | (bs.pos[2] << 8) | bs.pos[3]))
65 return FlateCorrupted;