From 648cd33e73cbbbf19e278101e6a9e071cb154c05 Mon Sep 17 00:00:00 2001 From: Anders Waldenborg Date: Fri, 13 Jul 2012 22:54:17 +0200 Subject: [PATCH] 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: Anders Waldenborg Signed-off-by: Jan Kiszka --- slirp/main.h | 1 + slirp/slirp.c | 3 +++ slirp/tcp_subr.c | 7 +++++-- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/slirp/main.h b/slirp/main.h index 028df4b361..bf601e223d 100644 --- a/slirp/main.h +++ b/slirp/main.h @@ -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; diff --git a/slirp/slirp.c b/slirp/slirp.c index 90473eb74a..9787104b3b 100644 --- a/slirp/slirp.c +++ b/slirp/slirp.c @@ -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); diff --git a/slirp/tcp_subr.c b/slirp/tcp_subr.c index 0a545c41e7..025b374367 100644 --- a/slirp/tcp_subr.c +++ b/slirp/tcp_subr.c @@ -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) - so->so_faddr = slirp->vhost_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) {