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slirp: factor out guestfwd addition checks 

This will allow reusing the function in a following patch.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
This commit is contained in:
Marc-André Lureau 2018-11-22 02:06:23 +04:00 committed by Samuel Thibault
parent a857d91d8c
commit 4246e8cac7
2 changed files with 21 additions and 9 deletions
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7
slirp/misc.c
View File

@ -37,13 +37,6 @@ int add_exec(struct gfwd_list **ex_ptr, void *chardev, const char *cmdline,
{
struct gfwd_list *tmp_ptr;
/* First, check if the port is "bound" */
for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
if (port == tmp_ptr->ex_fport &&
addr.s_addr == tmp_ptr->ex_addr.s_addr)
return -1;
}
tmp_ptr = *ex_ptr;
*ex_ptr = g_new0(struct gfwd_list, 1);
(*ex_ptr)->ex_fport = port;

23
slirp/slirp.c
View File

@ -1046,9 +1046,11 @@ int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr,
return 0;
}
int slirp_add_exec(Slirp *slirp, void *chardev, const char *cmdline,
struct in_addr *guest_addr, int guest_port)
static bool
check_guestfwd(Slirp *slirp, struct in_addr *guest_addr, int guest_port)
{
struct gfwd_list *tmp_ptr;
if (!guest_addr->s_addr) {
guest_addr->s_addr = slirp->vnetwork_addr.s_addr |
(htonl(0x0204) & ~slirp->vnetwork_mask.s_addr);
@ -1057,6 +1059,23 @@ int slirp_add_exec(Slirp *slirp, void *chardev, const char *cmdline,
slirp->vnetwork_addr.s_addr ||
guest_addr->s_addr == slirp->vhost_addr.s_addr ||
guest_addr->s_addr == slirp->vnameserver_addr.s_addr) {
return false;
}
/* check if the port is "bound" */
for (tmp_ptr = slirp->guestfwd_list; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
if (guest_port == tmp_ptr->ex_fport &&
guest_addr->s_addr == tmp_ptr->ex_addr.s_addr)
return false;
}
return true;
}
int slirp_add_exec(Slirp *slirp, void *chardev, const char *cmdline,
struct in_addr *guest_addr, int guest_port)
{
if (!check_guestfwd(slirp, guest_addr, guest_port)) {
return -1;
}