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Diffstat (limited to 'c/src/lib/libnetworking/netinet/ip_fw.h')
| -rw-r--r-- | c/src/lib/libnetworking/netinet/ip_fw.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/c/src/lib/libnetworking/netinet/ip_fw.h b/c/src/lib/libnetworking/netinet/ip_fw.h deleted file mode 100644 index cab7f4ac93..0000000000 --- a/c/src/lib/libnetworking/netinet/ip_fw.h +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Copyright (c) 1993 Daniel Boulet - * Copyright (c) 1994 Ugen J.S.Antsilevich - * - * Redistribution and use in source forms, with and without modification, - * are permitted provided that this entire comment appears intact. - * - * Redistribution in binary form may occur without any restrictions. - * Obviously, it would be nice if you gave credit where credit is due - * but requiring it would be too onerous. - * - * This software is provided ``AS IS'' without any warranties of any kind. - * - * $Id$ - */ - -#ifndef _IP_FW_H -#define _IP_FW_H - -#include <net/if.h> - -/* - * This union structure identifies an interface, either explicitly - * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME - * and IP_FW_F_OIFNAME say how to interpret this structure. An - * interface unit number of -1 matches any unit number, while an - * IP address of 0.0.0.0 indicates matches any interface. - * - * The receive and transmit interfaces are only compared against the - * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE) - * is set. Note some packets lack a receive or transmit interface - * (in which case the missing "interface" never matches). - */ - -union ip_fw_if { - struct in_addr fu_via_ip; /* Specified by IP address */ - struct { /* Specified by interface name */ -#define FW_IFNLEN IFNAMSIZ - char name[FW_IFNLEN]; - short unit; /* -1 means match any unit */ - } fu_via_if; -}; - -/* - * Format of an IP firewall descriptor - * - * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order. - * fw_flg and fw_n*p are stored in host byte order (of course). - * Port numbers are stored in HOST byte order. - * Warning: setsockopt() will fail if sizeof(struct ip_fw) > MLEN (108) - */ - -struct ip_fw { - u_long fw_pcnt,fw_bcnt; /* Packet and byte counters */ - struct in_addr fw_src, fw_dst; /* Source and destination IP addr */ - struct in_addr fw_smsk, fw_dmsk; /* Mask for src and dest IP addr */ - u_short fw_number; /* Rule number */ - u_short fw_flg; /* Flags word */ -#define IP_FW_MAX_PORTS 10 /* A reasonable maximum */ - u_short fw_pts[IP_FW_MAX_PORTS]; /* Array of port numbers to match */ - u_char fw_ipopt,fw_ipnopt; /* IP options set/unset */ - u_char fw_tcpf,fw_tcpnf; /* TCP flags set/unset */ -#define IP_FW_ICMPTYPES_DIM (32 / (sizeof(unsigned) * 8)) - unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */ - long timestamp; /* timestamp (tv_sec) of last match */ - union ip_fw_if fw_in_if, fw_out_if; /* Incoming and outgoing interfaces */ - union { - u_short fu_divert_port; /* Divert/tee port (options IPDIVERT) */ - u_short fu_skipto_rule; /* SKIPTO command rule number */ - u_short fu_reject_code; /* REJECT response code */ - } fw_un; - u_char fw_prot; /* IP protocol */ - u_char fw_nports; /* N'of src ports and # of dst ports */ - /* in ports array (dst ports follow */ - /* src ports; max of 10 ports in all; */ - /* count of 0 means match all ports) */ -}; - -#define IP_FW_GETNSRCP(rule) ((rule)->fw_nports & 0x0f) -#define IP_FW_SETNSRCP(rule, n) do { \ - (rule)->fw_nports &= ~0x0f; \ - (rule)->fw_nports |= (n); \ - } while (0) -#define IP_FW_GETNDSTP(rule) ((rule)->fw_nports >> 4) -#define IP_FW_SETNDSTP(rule, n) do { \ - (rule)->fw_nports &= ~0xf0; \ - (rule)->fw_nports |= (n) << 4;\ - } while (0) - -#define fw_divert_port fw_un.fu_divert_port -#define fw_skipto_rule fw_un.fu_skipto_rule -#define fw_reject_code fw_un.fu_reject_code - -struct ip_fw_chain { - LIST_ENTRY(ip_fw_chain) chain; - struct ip_fw *rule; -}; - -/* - * Values for "flags" field . - */ -#define IP_FW_F_IN 0x0001 /* Check inbound packets */ -#define IP_FW_F_OUT 0x0002 /* Check outbound packets */ -#define IP_FW_F_IIFACE 0x0004 /* Apply inbound interface test */ -#define IP_FW_F_OIFACE 0x0008 /* Apply outbound interface test */ - -#define IP_FW_F_COMMAND 0x0070 /* Mask for type of chain entry: */ -#define IP_FW_F_DENY 0x0000 /* This is a deny rule */ -#define IP_FW_F_REJECT 0x0010 /* Deny and send a response packet */ -#define IP_FW_F_ACCEPT 0x0020 /* This is an accept rule */ -#define IP_FW_F_COUNT 0x0030 /* This is a count rule */ -#define IP_FW_F_DIVERT 0x0040 /* This is a divert rule */ -#define IP_FW_F_TEE 0x0050 /* This is a tee rule */ -#define IP_FW_F_SKIPTO 0x0060 /* This is a skipto rule */ - -#define IP_FW_F_PRN 0x0080 /* Print if this rule matches */ - -#define IP_FW_F_SRNG 0x0100 /* The first two src ports are a min * - * and max range (stored in host byte * - * order). */ - -#define IP_FW_F_DRNG 0x0200 /* The first two dst ports are a min * - * and max range (stored in host byte * - * order). */ - -#define IP_FW_F_IIFNAME 0x0400 /* In interface by name/unit (not IP) */ -#define IP_FW_F_OIFNAME 0x0800 /* Out interface by name/unit (not IP) */ - -#define IP_FW_F_INVSRC 0x1000 /* Invert sense of src check */ -#define IP_FW_F_INVDST 0x2000 /* Invert sense of dst check */ - -#define IP_FW_F_FRAG 0x4000 /* Fragment */ - -#define IP_FW_F_ICMPBIT 0x8000 /* ICMP type bitmap is valid */ - -#define IP_FW_F_MASK 0xFFFF /* All possible flag bits mask */ - -/* - * For backwards compatibility with rules specifying "via iface" but - * not restricted to only "in" or "out" packets, we define this combination - * of bits to represent this configuration. - */ - -#define IF_FW_F_VIAHACK (IP_FW_F_IN|IP_FW_F_OUT|IP_FW_F_IIFACE|IP_FW_F_OIFACE) - -/* - * Definitions for REJECT response codes. - * Values less than 256 correspond to ICMP unreachable codes. - */ -#define IP_FW_REJECT_RST 0x0100 /* TCP packets: send RST */ - -/* - * Definitions for IP option names. - */ -#define IP_FW_IPOPT_LSRR 0x01 -#define IP_FW_IPOPT_SSRR 0x02 -#define IP_FW_IPOPT_RR 0x04 -#define IP_FW_IPOPT_TS 0x08 - -/* - * Definitions for TCP flags. - */ -#define IP_FW_TCPF_FIN TH_FIN -#define IP_FW_TCPF_SYN TH_SYN -#define IP_FW_TCPF_RST TH_RST -#define IP_FW_TCPF_PSH TH_PUSH -#define IP_FW_TCPF_ACK TH_ACK -#define IP_FW_TCPF_URG TH_URG -#define IP_FW_TCPF_ESTAB 0x40 - -/* - * Main firewall chains definitions and global var's definitions. - */ -#ifdef KERNEL - -/* - * Function definitions. - */ -void ip_fw_init(void); - -#endif /* KERNEL */ - -#endif /* _IP_FW_H */ |