Commit 648cd33e authored by Anders Waldenborg's avatar Anders Waldenborg Committed by Jan Kiszka
Browse files

slirp: Handle whole 127.0.0.0/8 network as local addresses. 



Changes so translation of remote address to the host's ip address in
the virtual network happens for all addresses in the 127.0.0.0/8
network, not just 127.0.0.1.

This fixes so that hostfwd bound to addresses such as 127.0.0.2 works.

Signed-off-by: default avatarAnders Waldenborg <anders@0x63.nu>
Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
parent 0f66998f

slirp/main.h

+1 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ extern char *exec_shell; 
extern u_int curtime;

extern fd_set *global_readfds, *global_writefds, *global_xfds;

extern struct in_addr loopback_addr;

extern in_addr_t loopback_mask;

extern char *username;

extern char *socket_path;

extern int towrite_max;

slirp/slirp.c

+3 −0
Original line number Diff line number Diff line
@@ -29,6 +29,8 @@ 


/* host loopback address */

struct in_addr loopback_addr;

/* host loopback network mask */

in_addr_t loopback_mask;



/* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */

static const uint8_t special_ethaddr[ETH_ALEN] = {
@@ -191,6 +193,7 @@ static void slirp_init_once(void) 
#endif



    loopback_addr.s_addr = htonl(INADDR_LOOPBACK);

    loopback_mask = htonl(IN_CLASSA_NET);

}



static void slirp_state_save(QEMUFile *f, void *opaque);

slirp/tcp_subr.c

+5 −2
Original line number Diff line number Diff line
@@ -435,8 +435,11 @@ tcp_connect(struct socket *inso) 
	so->so_fport = addr.sin_port;

	so->so_faddr = addr.sin_addr;

	/* Translate connections from localhost to the real hostname */

	if (so->so_faddr.s_addr == 0 || so->so_faddr.s_addr == loopback_addr.s_addr)

        if (so->so_faddr.s_addr == 0 ||

            (so->so_faddr.s_addr & loopback_mask) ==

            (loopback_addr.s_addr & loopback_mask)) {

            so->so_faddr = slirp->vhost_addr;

        }



	/* Close the accept() socket, set right state */

	if (inso->so_state & SS_FACCEPTONCE) {