Function getgzbuf

source/src/protocol.cpp:213–240

}

ucharbuf *getgzbuf(ucharbuf &p) // fetch a gzipped buffer; needs to be freed properly later
{
    int size = getuint(p);
    int sizegz = getuint(p);
    if(sizegz == 0) sizegz = size; // uncompressed was smaller
    if(sizegz > 0 && p.remaining() >= sizegz && sizegz <= MAXGZMSGSIZE && size >= 0 && size <= MAXGZMSGSIZE)
    {
        uchar *data = new uchar[size + 1];
        uLongf rawsize = size;
        if(data)
        {
            if(size == sizegz)
            {
                memcpy(data, &p.buf[p.len], size);
            }
            else if(uncompress(data, &rawsize, &p.buf[p.len], sizegz) != Z_OK || rawsize - size != 0)
            {
                p.forceoverread();
                delete[] data;
                return NULL;
            }
            p.len += sizegz;
            return new ucharbuf(data, size);
        }
    }
    p.forceoverread();
    return NULL;
}

void freegzbuf(ucharbuf *p)  // free a ucharbuf created by getgzbuf()
{