slirp: Do not allow to remove non-hostfwd sockets
Prevent that the users accidentally shoots down dynamic sockets. This allows to remove looping for removals as there can now only be one match. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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parent
6dd5ffb661
commit
9c12a6f24d
8
net.c
8
net.c
@ -880,7 +880,7 @@ void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
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char buf[256] = "";
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const char *p = src_str;
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int is_udp = 0;
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int n;
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int err;
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if (!slirp_inited) {
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monitor_printf(mon, "user mode network stack not in use\n");
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@ -909,10 +909,10 @@ void net_slirp_hostfwd_remove(Monitor *mon, const char *src_str)
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host_port = atoi(p);
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n = slirp_remove_hostfwd(is_udp, host_addr, host_port);
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err = slirp_remove_hostfwd(is_udp, host_addr, host_port);
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monitor_printf(mon, "removed %d host forwarding rules for %s\n", n,
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src_str);
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monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
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err ? "removed" : "not found");
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return;
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fail_syntax:
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@ -757,9 +757,7 @@ void if_encap(const uint8_t *ip_data, int ip_data_len)
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}
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}
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/* Unlistens a redirection
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*
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* Return value: number of redirs removed */
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/* Drop host forwarding rule, return 0 if found. */
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int slirp_remove_hostfwd(int is_udp, struct in_addr host_addr, int host_port)
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{
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struct socket *so;
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@ -767,22 +765,20 @@ int slirp_remove_hostfwd(int is_udp, struct in_addr host_addr, int host_port)
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struct sockaddr_in addr;
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int port = htons(host_port);
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socklen_t addr_len;
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int n = 0;
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loop_again:
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for (so = head->so_next; so != head; so = so->so_next) {
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addr_len = sizeof(addr);
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if (getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 &&
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if ((so->so_state & SS_HOSTFWD) &&
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getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 &&
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addr.sin_addr.s_addr == host_addr.s_addr &&
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addr.sin_port == port) {
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close(so->s);
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sofree(so);
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n++;
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goto loop_again;
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return 0;
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}
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}
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return n;
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return -1;
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}
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int slirp_add_hostfwd(int is_udp, struct in_addr host_addr, int host_port,
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