/* cover all inflate() header and trailer cases and code after inflate() */
local void cover_wrap(void)
{
int ret;
z_stream strm, copy;
unsigned char dict[257];
ret = inflate(Z_NULL, 0); assert(ret == Z_STREAM_ERROR);
ret = inflateEnd(Z_NULL); assert(ret == Z_STREAM_ERROR);
ret = inflateCopy(Z_NULL, Z_NULL); assert(ret == Z_STREAM_ERROR);
fputs("inflate bad parameters\n", stderr);
inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR);
inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR);
inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR);
inf("8 99", "set window size from header", 0, 0, 0, Z_OK);
inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR);
inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END);
inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1,
Z_DATA_ERROR);
inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length",
0, 47, 0, Z_STREAM_END);
inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR);
inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT);
inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK);
mem_setup(&strm);
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit2(&strm, -8);
strm.avail_in = 2;
strm.next_in = (void *)"\x63";
strm.avail_out = 1;
strm.next_out = (void *)&ret;
mem_limit(&strm, 1);
ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR);
ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_MEM_ERROR);
mem_limit(&strm, 0);
memset(dict, 0, 257);
ret = inflateSetDictionary(&strm, dict, 257);
assert(ret == Z_OK);
mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256);
ret = inflatePrime(&strm, 16, 0); assert(ret == Z_OK);
strm.avail_in = 2;
strm.next_in = (void *)"\x80";
ret = inflateSync(&strm); assert(ret == Z_DATA_ERROR);
ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_STREAM_ERROR);
strm.avail_in = 4;
strm.next_in = (void *)"\0\0\xff\xff";
ret = inflateSync(&strm); assert(ret == Z_OK);
(void)inflateSyncPoint(&strm);
ret = inflateCopy(©, &strm); assert(ret == Z_MEM_ERROR);
mem_limit(&strm, 0);
ret = inflateUndermine(&strm, 1); assert(ret == Z_DATA_ERROR);
(void)inflateMark(&strm);
ret = inflateEnd(&strm); assert(ret == Z_OK);
mem_done(&strm, "miscellaneous, force memory errors");
}
/* generic inflate() run, where hex is the hexadecimal input data, what is the
text to include in an error message, step is how much input data to feed
inflate() on each call, or zero to feed it all, win is the window bits
parameter to inflateInit2(), len is the size of the output buffer, and err
is the error code expected from the first inflate() call (the second
inflate() call is expected to return Z_STREAM_END). If win is 47, then
header information is collected with inflateGetHeader(). If a zlib stream
is looking for a dictionary, then an empty dictionary is provided.
inflate() is run until all of the input data is consumed. */
local void inf(char *hex, char *what, unsigned step, int win, unsigned len,
int err)
{
int ret;
unsigned have;
unsigned char *in, *out;
z_stream strm, copy;
gz_header head;
mem_setup(&strm);
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit2(&strm, win);
if (ret != Z_OK) {
mem_done(&strm, what);
return;
}
out = malloc(len); assert(out != NULL);
if (win == 47) {
head.extra = out;
head.extra_max = len;
head.name = out;
head.name_max = len;
head.comment = out;
head.comm_max = len;
ret = inflateGetHeader(&strm, &head); assert(ret == Z_OK);
}
in = h2b(hex, &have); assert(in != NULL);
if (step == 0 || step > have)
step = have;
strm.avail_in = step;
have -= step;
strm.next_in = in;
do {
strm.avail_out = len;
strm.next_out = out;
ret = inflate(&strm, Z_NO_FLUSH); assert(err == 9 || ret == err);
if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT)
break;
if (ret == Z_NEED_DICT) {
ret = inflateSetDictionary(&strm, in, 1);
assert(ret == Z_DATA_ERROR);
mem_limit(&strm, 1);
ret = inflateSetDictionary(&strm, out, 0);
assert(ret == Z_MEM_ERROR);
mem_limit(&strm, 0);
((struct inflate_state *)strm.state)->mode = DICT;
ret = inflateSetDictionary(&strm, out, 0);
assert(ret == Z_OK);
ret = inflate(&strm, Z_NO_FLUSH); assert(ret == Z_BUF_ERROR);
}
ret = inflateCopy(©, &strm); assert(ret == Z_OK);
ret = inflateEnd(©); assert(ret == Z_OK);
err = 9; /* don't care next time around */
have += strm.avail_in;
strm.avail_in = step > have ? have : step;
have -= strm.avail_in;
} while (strm.avail_in);
free(in);
free(out);
ret = inflateReset2(&strm, -8); assert(ret == Z_OK);
ret = inflateEnd(&strm); assert(ret == Z_OK);
mem_done(&strm, what);
}
int
Xmemory(void)
{
if (cmd.argc >= 2) {
int i;
/* parse the memory specs */
for (i = 1; i < cmd.argc; i++) {
char *p;
long long addr, size;
p = cmd.argv[i];
size = strtoll(p + 1, &p, 0);
/* Size the size */
switch(*p) {
case 'G':
size *= 1024;
case 'M':
size *= 1024;
case 'K':
size *= 1024;
p++;
}
/* Handle (possibly non-existant) address part */
switch(*p) {
case '@':
addr = strtoll(p + 1, NULL, 0);
break;
/* Adjust address if we don't need it */
default:
if (cmd.argv[i][0] == '=')
addr = -1;
else
addr = 0;
}
if (addr == 0 || size == 0) {
printf ("bad language\n");
return 0;
} else {
switch (cmd.argv[i][0]) {
case '-':
mem_delete(addr, addr + size);
break;
case '+':
mem_add(addr, addr + size);
break;
case '=':
mem_limit(size);
break;
default :
printf ("bad OP\n");
return 0;
}
}
}
}
dump_biosmem(NULL);
return 0;
}
