diff options
Diffstat (limited to 'socket.h')
| -rw-r--r-- | socket.h | 164 |
1 files changed, 108 insertions, 56 deletions
@@ -77,12 +77,29 @@ typedef uint16_t packet_size_type; /* convert a packet_size_type from network to host order */ #define ntohps(x) ntohs(x) +/* OpenVPN sockaddr struct */ +struct openvpn_sockaddr +{ + int dummy; // JYFIXME + struct sockaddr_in sa; +}; + +/* actual address of remote, based on source address of received packets */ +struct link_socket_actual +{ + int dummy; // JYFIXME + struct openvpn_sockaddr dest; +#if ENABLE_IP_PKTINFO + struct in_pktinfo pi; +#endif +}; + /* IP addresses which are persistant across SIGUSR1s */ struct link_socket_addr { - struct sockaddr_in local; - struct sockaddr_in remote; /* initial remote */ - struct sockaddr_in actual; /* remote may change due to --float */ + struct openvpn_sockaddr local; + struct openvpn_sockaddr remote; /* initial remote */ + struct link_socket_actual actual; /* reply to this address */ }; struct link_socket_info @@ -180,7 +197,8 @@ struct link_socket bool did_resolve_remote; -# define SF_TCP_NODELAY (1<<0) +# define SF_USE_IP_PKTINFO (1<<0) +# define SF_TCP_NODELAY (1<<1) unsigned int sockflags; /* for stream sockets */ @@ -196,7 +214,7 @@ struct link_socket #ifdef ENABLE_SOCKS /* Socks proxy */ struct socks_proxy_info *socks_proxy; - struct sockaddr_in socks_relay; /* Socks UDP relay address */ + struct link_socket_actual socks_relay; /* Socks UDP relay address */ #endif #if defined(ENABLE_HTTP_PROXY) || defined(ENABLE_SOCKS) @@ -232,13 +250,13 @@ int socket_recv_queue (struct link_socket *sock, int maxsize); int socket_send_queue (struct link_socket *sock, struct buffer *buf, - const struct sockaddr_in *to); + const struct link_socket_actual *to); int socket_finalize ( SOCKET s, struct overlapped_io *io, struct buffer *buf, - struct sockaddr_in *from); + struct link_socket_actual *from); #else @@ -286,23 +304,34 @@ void link_socket_init_phase2 (struct link_socket *sock, const struct frame *frame, volatile int *signal_received); -void link_socket_post_fork (const struct link_socket *sock, - const struct sockaddr_in *remote); - void socket_adjust_frame_parameters (struct frame *frame, int proto); void frame_adjust_path_mtu (struct frame *frame, int pmtu, int proto); void link_socket_close (struct link_socket *sock); -const char *print_sockaddr_ex (const struct sockaddr_in *addr, - bool do_port, +#define PS_SHOW_PORT_IF_DEFINED (1<<0) +#define PS_SHOW_PORT (1<<1) +#define PS_SHOW_PKTINFO (1<<2) + +const char *print_sockaddr_ex (const struct openvpn_sockaddr *addr, const char* separator, + const unsigned int flags, struct gc_arena *gc); -const char *print_sockaddr (const struct sockaddr_in *addr, + +const char *print_sockaddr (const struct openvpn_sockaddr *addr, struct gc_arena *gc); +const char *print_link_socket_actual_ex (const struct link_socket_actual *act, + const char* separator, + const unsigned int flags, + struct gc_arena *gc); + +const char *print_link_socket_actual (const struct link_socket_actual *act, + struct gc_arena *gc); + + #define IA_EMPTY_IF_UNDEF (1<<0) #define IA_NET_ORDER (1<<1) const char *print_in_addr_t (in_addr_t addr, unsigned int flags, struct gc_arena *gc); @@ -311,7 +340,7 @@ const char *print_in_addr_t (in_addr_t addr, unsigned int flags, struct gc_arena #define SA_SET_IF_NONZERO (1<<1) void setenv_sockaddr (struct env_set *es, const char *name_prefix, - const struct sockaddr_in *addr, + const struct openvpn_sockaddr *addr, const bool flags); void setenv_in_addr_t (struct env_set *es, @@ -319,19 +348,24 @@ void setenv_in_addr_t (struct env_set *es, in_addr_t addr, const bool flags); +void setenv_link_socket_actual (struct env_set *es, + const char *name_prefix, + const struct link_socket_actual *act, + const bool flags); + void bad_address_length (int actual, int expected); in_addr_t link_socket_current_remote (const struct link_socket_info *info); void link_socket_connection_initiated (const struct buffer *buf, struct link_socket_info *info, - const struct sockaddr_in *addr, + const struct link_socket_actual *addr, const char *common_name, struct env_set *es); void link_socket_bad_incoming_addr (struct buffer *buf, const struct link_socket_info *info, - const struct sockaddr_in *from_addr); + const struct link_socket_actual *from_addr); void link_socket_bad_outgoing_addr (void); @@ -355,7 +389,7 @@ int openvpn_inet_aton (const char *dotted_quad, struct in_addr *addr); socket_descriptor_t create_socket_tcp (void); socket_descriptor_t socket_do_accept (socket_descriptor_t sd, - struct sockaddr_in *remote, + struct link_socket_actual *act, const bool nowait); /* @@ -447,33 +481,39 @@ link_socket_connection_oriented (const struct link_socket *sock) } static inline bool -addr_defined (const struct sockaddr_in *addr) +addr_defined (const struct openvpn_sockaddr *addr) { - return addr->sin_addr.s_addr != 0; + return addr->sa.sin_addr.s_addr != 0; } static inline bool -addr_match (const struct sockaddr_in *a1, const struct sockaddr_in *a2) +link_socket_actual_defined (const struct link_socket_actual *act) { - return a1->sin_addr.s_addr == a2->sin_addr.s_addr; + return act && addr_defined (&act->dest); +} + +static inline bool +addr_match (const struct openvpn_sockaddr *a1, const struct openvpn_sockaddr *a2) +{ + return a1->sa.sin_addr.s_addr == a2->sa.sin_addr.s_addr; } static inline in_addr_t -addr_host (const struct sockaddr_in *s) +addr_host (const struct openvpn_sockaddr *s) { - return ntohl (s->sin_addr.s_addr); + return ntohl (s->sa.sin_addr.s_addr); } static inline bool -addr_port_match (const struct sockaddr_in *a1, const struct sockaddr_in *a2) +addr_port_match (const struct openvpn_sockaddr *a1, const struct openvpn_sockaddr *a2) { - return a1->sin_addr.s_addr == a2->sin_addr.s_addr - && a1->sin_port == a2->sin_port; + return a1->sa.sin_addr.s_addr == a2->sa.sin_addr.s_addr + && a1->sa.sin_port == a2->sa.sin_port; } static inline bool -addr_match_proto (const struct sockaddr_in *a1, - const struct sockaddr_in *a2, +addr_match_proto (const struct openvpn_sockaddr *a1, + const struct openvpn_sockaddr *a2, const int proto) { return link_socket_proto_connection_oriented (proto) @@ -482,6 +522,12 @@ addr_match_proto (const struct sockaddr_in *a1, } static inline bool +link_socket_actual_match (const struct link_socket_actual *a1, const struct link_socket_actual *a2) +{ + return addr_port_match (&a1->dest, &a2->dest); +} + +static inline bool socket_connection_reset (const struct link_socket *sock, int status) { if (link_socket_connection_oriented (sock)) @@ -504,17 +550,17 @@ socket_connection_reset (const struct link_socket *sock, int status) static inline bool link_socket_verify_incoming_addr (struct buffer *buf, const struct link_socket_info *info, - const struct sockaddr_in *from_addr) + const struct link_socket_actual *from_addr) { if (buf->len > 0) { - if (from_addr->sin_family != AF_INET) + if (from_addr->dest.sa.sin_family != AF_INET) return false; - if (!addr_defined (from_addr)) + if (!link_socket_actual_defined (from_addr)) return false; if (info->remote_float || !addr_defined (&info->lsa->remote)) return true; - if (addr_match_proto (from_addr, &info->lsa->remote, info->proto)) + if (addr_match_proto (&from_addr->dest, &info->lsa->remote, info->proto)) return true; } return false; @@ -523,21 +569,18 @@ link_socket_verify_incoming_addr (struct buffer *buf, static inline void link_socket_get_outgoing_addr (struct buffer *buf, const struct link_socket_info *info, - struct sockaddr_in *addr) + struct link_socket_actual **act) { if (buf->len > 0) { struct link_socket_addr *lsa = info->lsa; - if (addr_defined (&lsa->actual)) - { - addr->sin_family = lsa->actual.sin_family; - addr->sin_addr.s_addr = lsa->actual.sin_addr.s_addr; - addr->sin_port = lsa->actual.sin_port; - } + if (link_socket_actual_defined (&lsa->actual)) + *act = &lsa->actual; else { link_socket_bad_outgoing_addr (); buf->len = 0; + *act = NULL; } } } @@ -545,7 +588,7 @@ link_socket_get_outgoing_addr (struct buffer *buf, static inline void link_socket_set_outgoing_addr (const struct buffer *buf, struct link_socket_info *info, - const struct sockaddr_in *addr, + const struct link_socket_actual *act, const char *common_name, struct env_set *es) { @@ -555,14 +598,14 @@ link_socket_set_outgoing_addr (const struct buffer *buf, if ( /* new or changed address? */ (!info->connection_established - || !addr_match_proto (addr, &lsa->actual, info->proto)) + || !addr_match_proto (&act->dest, &lsa->actual.dest, info->proto)) /* address undef or address == remote or --float */ && (info->remote_float || !addr_defined (&lsa->remote) - || addr_match_proto (addr, &lsa->remote, info->proto)) + || addr_match_proto (&act->dest, &lsa->remote, info->proto)) ) { - link_socket_connection_initiated (buf, info, addr, common_name, es); + link_socket_connection_initiated (buf, info, act, common_name, es); } } } @@ -599,7 +642,7 @@ int link_socket_read_tcp (struct link_socket *sock, static inline int link_socket_read_udp_win32 (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *from) + struct link_socket_actual *from) { return socket_finalize (sock->sd, &sock->reads, buf, from); } @@ -609,7 +652,7 @@ link_socket_read_udp_win32 (struct link_socket *sock, int link_socket_read_udp_posix (struct link_socket *sock, struct buffer *buf, int maxsize, - struct sockaddr_in *from); + struct link_socket_actual *from); #endif @@ -618,7 +661,7 @@ static inline int link_socket_read (struct link_socket *sock, struct buffer *buf, int maxsize, - struct sockaddr_in *from) + struct link_socket_actual *from) { if (sock->info.proto == PROTO_UDPv4) { @@ -634,7 +677,7 @@ link_socket_read (struct link_socket *sock, else if (sock->info.proto == PROTO_TCPv4_SERVER || sock->info.proto == PROTO_TCPv4_CLIENT) { /* from address was returned by accept */ - *from = sock->info.lsa->actual; + from->dest.sa = sock->info.lsa->actual.dest.sa; return link_socket_read_tcp (sock, buf); } else @@ -650,14 +693,14 @@ link_socket_read (struct link_socket *sock, int link_socket_write_tcp (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to); + struct link_socket_actual *to); #ifdef WIN32 static inline int link_socket_write_win32 (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to) + struct link_socket_actual *to) { int err = 0; int status = 0; @@ -682,17 +725,26 @@ link_socket_write_win32 (struct link_socket *sock, static inline int link_socket_write_udp_posix (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to) + struct link_socket_actual *to) { - return sendto (sock->sd, BPTR (buf), BLEN (buf), 0, - (struct sockaddr *) to, - (socklen_t) sizeof (*to)); +#if ENABLE_IP_PKTINFO + int link_socket_write_udp_posix_sendmsg (struct link_socket *sock, + struct buffer *buf, + struct link_socket_actual *to); + + if (sock->sockflags & SF_USE_IP_PKTINFO) + return link_socket_write_udp_posix_sendmsg (sock, buf, to); + else +#endif + return sendto (sock->sd, BPTR (buf), BLEN (buf), 0, + (struct sockaddr *) &to->dest.sa, + (socklen_t) sizeof (to->dest.sa)); } static inline int link_socket_write_tcp_posix (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to) + struct link_socket_actual *to) { return send (sock->sd, BPTR (buf), BLEN (buf), MSG_NOSIGNAL); } @@ -702,7 +754,7 @@ link_socket_write_tcp_posix (struct link_socket *sock, static inline int link_socket_write_udp (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to) + struct link_socket_actual *to) { #ifdef WIN32 return link_socket_write_win32 (sock, buf, to); @@ -715,7 +767,7 @@ link_socket_write_udp (struct link_socket *sock, static inline int link_socket_write (struct link_socket *sock, struct buffer *buf, - struct sockaddr_in *to) + struct link_socket_actual *to) { if (sock->info.proto == PROTO_UDPv4) { |