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Fix a strdup() of uninitialized buffer in addressmap_get_virtual_address

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Partial revert of 22f723e4a3.

Bugfix on 0.2.3.0-alpha
This commit is contained in:
Nick Mathewson 2011-01-06 13:40:27 -05:00
parent d4b265d692
commit 3bc235d979
1 changed files with 4 additions and 1 deletions
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5
src/or/connection_edge.c
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@ -1200,6 +1200,7 @@ addressmap_get_virtual_address(int type)
} else if (type == RESOLVED_TYPE_IPV4) {
// This is an imperfect estimate of how many addresses are available, but
// that's ok.
struct in_addr in;
uint32_t available = 1u << (32-virtual_addr_netmask_bits);
while (available) {
/* Don't hand out any .0 or .255 address. */
@ -1211,7 +1212,9 @@ addressmap_get_virtual_address(int type)
return NULL;
}
}
if (!strmap_get(addressmap, fmt_addr32(next_virtual_addr))) {
in.s_addr = htonl(next_virtual_addr);
tor_inet_ntoa(&in, buf, sizeof(buf));
if (!strmap_get(addressmap, buf)) {
++next_virtual_addr;
break;
}