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Diffstat (limited to 'include/iprt/net.h')
| -rw-r--r-- | include/iprt/net.h | 1064 |
1 files changed, 1064 insertions, 0 deletions
diff --git a/include/iprt/net.h b/include/iprt/net.h new file mode 100644 index 00000000..647c15c3 --- /dev/null +++ b/include/iprt/net.h @@ -0,0 +1,1064 @@ +/** @file + * IPRT - Network Protocols. + */ + +/* + * Copyright (C) 2008-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef IPRT_INCLUDED_net_h +#define IPRT_INCLUDED_net_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/cdefs.h> +#include <iprt/types.h> +#include <iprt/assert.h> + + +RT_C_DECLS_BEGIN + +/** @defgroup grp_rt_net RTNet - Network Protocols + * @ingroup grp_rt + * @{ + */ + +/** + * Converts an stringified Ethernet MAC address into the RTMAC representation. + * + * @todo This should be move to some generic part of the runtime. + * + * @returns VINF_SUCCESS on success, VERR_GETOPT_INVALID_ARGUMENT_FORMAT on + * failure. + * + * @param pszAddr The address string to convert. + * @param pMacAddr Where to store the result. + */ +RTDECL(int) RTNetStrToMacAddr(const char *pszAddr, PRTMAC pMacAddr); + +/** + * IPv4 address. + */ +typedef RTUINT32U RTNETADDRIPV4; +AssertCompileSize(RTNETADDRIPV4, 4); +/** Pointer to a IPv4 address. */ +typedef RTNETADDRIPV4 *PRTNETADDRIPV4; +/** Pointer to a const IPv4 address. */ +typedef RTNETADDRIPV4 const *PCRTNETADDRIPV4; + +/** + * Tests if the given string is an IPv4 address. + * + * @returns boolean. + * @param pcszAddr String which may be an IPv4 address. + */ +RTDECL(bool) RTNetIsIPv4AddrStr(const char *pcszAddr); + +/** + * Tests if the given string is a wildcard IPv4 address. + * + * @returns boolean. + * @param pcszAddr String which may be an IPv4 address. + */ +RTDECL(bool) RTNetStrIsIPv4AddrAny(const char *pcszAddr); + +/** + * Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param ppszNext Where to store the pointer to the first char + * following the address. (Optional) + * @param pAddr Where to store the result. + */ +RTDECL(int) RTNetStrToIPv4AddrEx(const char *pcszAddr, PRTNETADDRIPV4 pAddr, char **ppszNext); + +/** + * Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation. + * Leading and trailing whitespace is ignored. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param pAddr Where to store the result. + */ +RTDECL(int) RTNetStrToIPv4Addr(const char *pcszAddr, PRTNETADDRIPV4 pAddr); + +/** + * Parses dotted-decimal IPv4 CIDR notation into RTNETADDRIPV4 + * representation and prefix length. Missing prefix specification is + * treated as exact address specification (prefix length 32). Leading + * and trailing whitespace is ignored. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param pAddr Where to store the address. + * @param piPrefix Where to store the prefix length; + */ +RTDECL(int) RTNetStrToIPv4Cidr(const char *pcszAddr, PRTNETADDRIPV4 pAddr, int *piPrefix); + +/** + * Verifies that RTNETADDRIPV4 is a valid contiguous netmask and + * computes its prefix length. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pMask The netmask to verify and convert. + * @param piPrefix Where to store the prefix length. (Optional) + */ +RTDECL(int) RTNetMaskToPrefixIPv4(PCRTNETADDRIPV4 pMask, int *piPrefix); + +/** + * Computes netmask corresponding to the prefix length. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param iPrefix The prefix to convert. + * @param pMask Where to store the netmask. + */ +RTDECL(int) RTNetPrefixToMaskIPv4(int iPrefix, PRTNETADDRIPV4 pMask); + + +/** + * IPv6 address. + */ +typedef RTUINT128U RTNETADDRIPV6; +AssertCompileSize(RTNETADDRIPV6, 16); +/** Pointer to a IPv6 address. */ +typedef RTNETADDRIPV6 *PRTNETADDRIPV6; +/** Pointer to a const IPv6 address. */ +typedef RTNETADDRIPV6 const *PCRTNETADDRIPV6; + +/** + * Tests if the given string is a valid IPv6 address. + * + * @returns @c true if it is, @c false if not. + * @param pszAddress String which may be an IPv6 address. + */ +RTDECL(bool) RTNetIsIPv6AddrStr(const char *pszAddress); + +/** + * Tests if the given string is a wildcard IPv6 address. + * + * @returns @c true if it is, @c false if not. + * @param pszAddress String which may be an IPv6 address. + */ +RTDECL(bool) RTNetStrIsIPv6AddrAny(const char *pszAddress); + +/** + * Parses IPv6 address into RTNETADDRIPV6 representation. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param ppszNext Where to store the pointer to the first char + * following the address. (Optional) + * @param pAddr Where to store the result. + */ +RTDECL(int) RTNetStrToIPv6AddrEx(const char *pcszAddr, PRTNETADDRIPV6 pAddr, char **ppszNext); + +/** + * Parses IPv6 address into RTNETADDRIPV6 representation. + * Leading and trailing whitespace is ignored. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param ppszZone Where to store the pointer to the first char + * of the zone id. NULL is stored if there is + * no zone id. + * @param pAddr Where to store the result. + */ +RTDECL(int) RTNetStrToIPv6Addr(const char *pcszAddr, PRTNETADDRIPV6 pAddr, char **ppszZone); + +/** + * Verifies that RTNETADDRIPV6 is a valid contiguous netmask and + * computes its prefix length. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pMask The netmask to verify and convert. + * @param piPrefix Where to store the prefix length. (Optional) + */ +RTDECL(int) RTNetMaskToPrefixIPv6(PCRTNETADDRIPV6 pMask, int *piPrefix); + +/** + * Computes netmask corresponding to the prefix length. + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param iPrefix The prefix to convert. + * @param pMask Where to store the netmask. + */ +RTDECL(int) RTNetPrefixToMaskIPv6(int iPrefix, PRTNETADDRIPV6 pMask); + +/** + * Parses IPv6 prefix notation into RTNETADDRIPV6 representation and + * prefix length. Missing prefix specification is treated as exact + * address specification (prefix length 128). Leading and trailing + * whitespace is ignored. + * + * "CIDR" in the name is a misnomer as IPv6 doesn't have network + * classes, but is parallel to the IPv4 name (and naming things is + * hard). + * + * @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on + * failure. + * + * @param pcszAddr The value to convert. + * @param pAddr Where to store the address. + * @param piPrefix Where to store the prefix length; + */ +RTDECL(int) RTNetStrToIPv6Cidr(const char *pcszAddr, PRTNETADDRIPV6 pAddr, int *piPrefix); + + +/** + * IPX address. + */ +#pragma pack(1) +typedef struct RTNETADDRIPX +{ + /** The network ID. */ + uint32_t Network; + /** The node ID. (Defaults to the MAC address apparently.) */ + RTMAC Node; +} RTNETADDRIPX; +#pragma pack() +AssertCompileSize(RTNETADDRIPX, 4+6); +/** Pointer to an IPX address. */ +typedef RTNETADDRIPX *PRTNETADDRIPX; +/** Pointer to a const IPX address. */ +typedef RTNETADDRIPX const *PCRTNETADDRIPX; + +/** + * Network address union. + * + * @remarks The size of this structure may change in the future. + */ +typedef union RTNETADDRU +{ + /** 64-bit view. */ + uint64_t au64[2]; + /** 32-bit view. */ + uint32_t au32[4]; + /** 16-bit view. */ + uint16_t au16[8]; + /** 8-bit view. */ + uint8_t au8[16]; + /** IPv4 view. */ + RTNETADDRIPV4 IPv4; +#ifndef IPv6 /* Work around X11 and RDP defining IPv6 to 1. */ + /** IPv6 view. */ + RTNETADDRIPV6 IPv6; +#endif + /** IPX view. */ + RTNETADDRIPX Ipx; + /** MAC address view. */ + RTMAC Mac; +} RTNETADDRU; +AssertCompileSize(RTNETADDRU, 16); +/** Pointer to an address union. */ +typedef RTNETADDRU *PRTNETADDRU; +/** Pointer to a const address union. */ +typedef RTNETADDRU const *PCRTNETADDRU; + +/** + * Network address type. + * + * @remarks The value assignments may change in the future. + */ +typedef enum RTNETADDRTYPE +{ + /** The invalid 0 entry. */ + RTNETADDRTYPE_INVALID = 0, + /** IP version 4. */ + RTNETADDRTYPE_IPV4, + /** IP version 6. */ + RTNETADDRTYPE_IPV6, + /** IPX. */ + RTNETADDRTYPE_IPX, + /** MAC address. */ + RTNETADDRTYPE_MAC, + /** The end of the valid values. */ + RTNETADDRTYPE_END, + /** The usual 32-bit hack. */ + RTNETADDRTYPE_32_BIT_HACK = 0x7fffffff +} RTNETADDRTYPE; +/** Pointer to a network address type. */ +typedef RTNETADDRTYPE *PRTNETADDRTYPE; +/** Pointer to a const network address type. */ +typedef RTNETADDRTYPE const *PCRTNETADDRTYPE; + +/** + * Network address. + * + * @remarks The size and type values may change. + */ +typedef struct RTNETADDR +{ + /** The address union. */ + RTNETADDRU uAddr; + /** Indicates which view of @a u that is valid. */ + RTNETADDRTYPE enmType; + /** The port number for IPv4 and IPv6 addresses. This is set to + * RTNETADDR_NA_PORT if not applicable. */ + uint32_t uPort; +} RTNETADDR; +/** Pointer to a network address. */ +typedef RTNETADDR *PRTNETADDR; +/** Pointer to a const network address. */ +typedef RTNETADDR const *PCRTNETADDR; + +/** The not applicable value of RTNETADDR::uPort value use to inid. */ +#define RTNETADDR_PORT_NA UINT32_MAX + +/** + * Ethernet header. + */ +#pragma pack(1) +typedef struct RTNETETHERHDR +{ + RTMAC DstMac; + RTMAC SrcMac; + /** Ethernet frame type or frame size, depending on the kind of ethernet. + * This is big endian on the wire. */ + uint16_t EtherType; +} RTNETETHERHDR; +#pragma pack() +AssertCompileSize(RTNETETHERHDR, 14); +/** Pointer to an ethernet header. */ +typedef RTNETETHERHDR *PRTNETETHERHDR; +/** Pointer to a const ethernet header. */ +typedef RTNETETHERHDR const *PCRTNETETHERHDR; + +/** @name EtherType (RTNETETHERHDR::EtherType) + * @{ */ +#define RTNET_ETHERTYPE_IPV4 UINT16_C(0x0800) +#define RTNET_ETHERTYPE_ARP UINT16_C(0x0806) +#define RTNET_ETHERTYPE_IPV6 UINT16_C(0x86dd) +#define RTNET_ETHERTYPE_VLAN UINT16_C(0x8100) +#define RTNET_ETHERTYPE_IPX_1 UINT16_C(0x8037) +#define RTNET_ETHERTYPE_IPX_2 UINT16_C(0x8137) +#define RTNET_ETHERTYPE_IPX_3 UINT16_C(0x8138) +/** @} */ + + +/** + * IPv4 header. + * All is bigendian on the wire. + */ +#pragma pack(1) +typedef struct RTNETIPV4 +{ +#ifdef RT_BIG_ENDIAN + unsigned int ip_v : 4; + unsigned int ip_hl : 4; + unsigned int ip_tos : 8; + unsigned int ip_len : 16; +#else + /** 00:0 - Header length given as a 32-bit word count. */ + unsigned int ip_hl : 4; + /** 00:4 - Header version. */ + unsigned int ip_v : 4; + /** 01 - Type of service. */ + unsigned int ip_tos : 8; + /** 02 - Total length (header + data). */ + unsigned int ip_len : 16; +#endif + /** 04 - Packet idenficiation. */ + uint16_t ip_id; + /** 06 - Offset if fragmented. */ + uint16_t ip_off; + /** 08 - Time to live. */ + uint8_t ip_ttl; + /** 09 - Protocol. */ + uint8_t ip_p; + /** 0a - Header check sum. */ + uint16_t ip_sum; + /** 0c - Source address. */ + RTNETADDRIPV4 ip_src; + /** 10 - Destination address. */ + RTNETADDRIPV4 ip_dst; + /** 14 - Options (optional). */ + uint32_t ip_options[1]; +} RTNETIPV4; +#pragma pack() +AssertCompileSize(RTNETIPV4, 6 * 4); +/** Pointer to a IPv4 header. */ +typedef RTNETIPV4 *PRTNETIPV4; +/** Pointer to a const IPv4 header. */ +typedef RTNETIPV4 const *PCRTNETIPV4; + +/** The minimum IPv4 header length (in bytes). + * Up to and including RTNETIPV4::ip_dst. */ +#define RTNETIPV4_MIN_LEN (20) + + +/** @name IPv4 Protocol Numbers + * @{ */ +/** IPv4: ICMP */ +#define RTNETIPV4_PROT_ICMP (1) +/** IPv4: TCP */ +#define RTNETIPV4_PROT_TCP (6) +/** IPv4: UDP */ +#define RTNETIPV4_PROT_UDP (17) +/** @} */ + +/** @name Common IPv4 Port Assignments + * @{ + */ +/** Boostrap Protocol / DHCP) Server. */ +#define RTNETIPV4_PORT_BOOTPS (67) +/** Boostrap Protocol / DHCP) Client. */ +#define RTNETIPV4_PORT_BOOTPC (68) +/** @} */ + +/** @name IPv4 Flags + * @{ */ +/** IPv4: Don't fragment */ +#define RTNETIPV4_FLAGS_DF (0x4000) +/** IPv4: More fragments */ +#define RTNETIPV4_FLAGS_MF (0x2000) +/** @} */ + +RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr); +RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax, bool fChecksum); +RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr); +RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt); +RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const *pvData, size_t cbData, uint32_t u32Sum, bool *pfOdd); +RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum); + + +/** + * IPv6 header. + * All is bigendian on the wire. + */ +#pragma pack(1) +typedef struct RTNETIPV6 +{ + /** Version (4 bits), Traffic Class (8 bits) and Flow Lable (20 bits). + * @todo this is probably mislabeled - ip6_flow vs. ip6_vfc, fix later. */ + uint32_t ip6_vfc; + /** 04 - Payload length, including extension headers. */ + uint16_t ip6_plen; + /** 06 - Next header type (RTNETIPV4_PROT_XXX). */ + uint8_t ip6_nxt; + /** 07 - Hop limit. */ + uint8_t ip6_hlim; + /** xx - Source address. */ + RTNETADDRIPV6 ip6_src; + /** xx - Destination address. */ + RTNETADDRIPV6 ip6_dst; +} RTNETIPV6; +#pragma pack() +AssertCompileSize(RTNETIPV6, 8 + 16 + 16); +/** Pointer to a IPv6 header. */ +typedef RTNETIPV6 *PRTNETIPV6; +/** Pointer to a const IPv6 header. */ +typedef RTNETIPV6 const *PCRTNETIPV6; + +/** The minimum IPv6 header length (in bytes). + * Up to and including RTNETIPV6::ip6_dst. */ +#define RTNETIPV6_MIN_LEN (40) +#define RTNETIPV6_ICMPV6_ND_WITH_LLA_OPT_MIN_LEN (32) + +RTDECL(uint32_t) RTNetIPv6PseudoChecksum(PCRTNETIPV6 pIpHdr); +RTDECL(uint32_t) RTNetIPv6PseudoChecksumEx(PCRTNETIPV6 pIpHdr, uint8_t bProtocol, uint16_t cbPkt); +RTDECL(uint32_t) RTNetIPv6PseudoChecksumBits(PCRTNETADDRIPV6 pSrcAddr, PCRTNETADDRIPV6 pDstAddr, + uint8_t bProtocol, uint16_t cbPkt); + + +/** + * UDP header. + */ +#pragma pack(1) +typedef struct RTNETUDP +{ + /** The source port. */ + uint16_t uh_sport; + /** The destination port. */ + uint16_t uh_dport; + /** The length of the UDP header and associated data. */ + uint16_t uh_ulen; + /** The checksum of the pseudo header, the UDP header and the data. */ + uint16_t uh_sum; +} RTNETUDP; +#pragma pack() +AssertCompileSize(RTNETUDP, 8); +/** Pointer to an UDP header. */ +typedef RTNETUDP *PRTNETUDP; +/** Pointer to a const UDP header. */ +typedef RTNETUDP const *PCRTNETUDP; + +/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */ +#define RTNETUDP_MIN_LEN (8) + +RTDECL(uint16_t) RTNetUDPChecksum(uint32_t u32Sum, PCRTNETUDP pUdpHdr); +RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum); +RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData); +RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax); +RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax, bool fChecksum); + + +/** + * IPv4 BOOTP / DHCP packet. + */ +#pragma pack(1) +typedef struct RTNETBOOTP +{ + /** 00 - The packet opcode (RTNETBOOTP_OP_*). */ + uint8_t bp_op; + /** 01 - Hardware address type. Same as RTNETARPHDR::ar_htype. */ + uint8_t bp_htype; + /** 02 - Hardware address length. */ + uint8_t bp_hlen; + /** 03 - Gateway hops. */ + uint8_t bp_hops; + /** 04 - Transaction ID. */ + uint32_t bp_xid; + /** 08 - Seconds since boot started. */ + uint16_t bp_secs; + /** 0a - Unused (BOOTP) / Flags (DHCP) (RTNET_DHCP_FLAGS_*). */ + uint16_t bp_flags; + /** 0c - Client IPv4 address. */ + RTNETADDRIPV4 bp_ciaddr; + /** 10 - Your IPv4 address. */ + RTNETADDRIPV4 bp_yiaddr; + /** 14 - Server IPv4 address. */ + RTNETADDRIPV4 bp_siaddr; + /** 18 - Gateway IPv4 address. */ + RTNETADDRIPV4 bp_giaddr; + /** 1c - Client hardware address. */ + union + { + uint8_t au8[16]; + RTMAC Mac; + } bp_chaddr; + /** 2c - Server name. */ + uint8_t bp_sname[64]; + /** 6c - File name / more DHCP options. */ + uint8_t bp_file[128]; + /** ec - Vendor specific area (BOOTP) / Options (DHCP). + * @remark This is really 312 bytes in the DHCP version. */ + union + { + uint8_t au8[128]; + struct DHCP + { + /** ec - The DHCP cookie (RTNET_DHCP_COOKIE). */ + uint32_t dhcp_cookie; + /** f0 - The DHCP options. */ + uint8_t dhcp_opts[124]; + } Dhcp; + } bp_vend; + +} RTNETBOOTP; +#pragma pack() +AssertCompileSize(RTNETBOOTP, 0xec + 128); +/** Pointer to a BOOTP / DHCP packet. */ +typedef RTNETBOOTP *PRTNETBOOTP; +/** Pointer to a const BOOTP / DHCP packet. */ +typedef RTNETBOOTP const *PCRTNETBOOTP; + +/** Minimum BOOTP packet length. For quick validation, no standard thing really. */ +#define RTNETBOOTP_MIN_LEN 0xec +/** Minimum DHCP packet length. For quick validation, no standard thing really. */ +#define RTNETBOOTP_DHCP_MIN_LEN 0xf1 + +/** The normal size of the a DHCP packet (i.e. a RTNETBOOTP). + * Same as RTNET_DHCP_OPT_SIZE, just expressed differently. */ +#define RTNET_DHCP_NORMAL_SIZE (0xec + 4 + RTNET_DHCP_OPT_SIZE) +/** The normal size of RTNETBOOTP::bp_vend::Dhcp::dhcp_opts. */ +#define RTNET_DHCP_OPT_SIZE (312 - 4) + +/** @name BOOTP packet opcode values + * @{ */ +#define RTNETBOOTP_OP_REQUEST 1 +#define RTNETBOOTP_OP_REPLY 2 +/** @} */ + +/** @name DHCP flags (RTNETBOOTP::bp_flags) + * @{ */ +#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */ +/** @} */ + +/** The DHCP cookie (network endian). */ +#define RTNET_DHCP_COOKIE UINT32_C(0x63825363) + +/** + * An IPv4 DHCP option header. + */ +typedef struct RTNETDHCPOPT +{ + /** 00 - The DHCP option. */ + uint8_t dhcp_opt; + /** 01 - The data length (excluding this header). */ + uint8_t dhcp_len; + /* 02 - The option data follows here, optional and of variable length. */ +} RTNETDHCPOPT; +AssertCompileSize(RTNETDHCPOPT, 2); +/** Pointer to a DHCP option header. */ +typedef RTNETDHCPOPT *PRTNETDHCPOPT; +/** Pointer to a const DHCP option header. */ +typedef RTNETDHCPOPT const *PCRTNETDHCPOPT; + +/** @name DHCP options + * @{ */ +/** 1 byte padding, this has no dhcp_len field. */ +#define RTNET_DHCP_OPT_PAD 0 + +/** The subnet mask. */ +#define RTNET_DHCP_OPT_SUBNET_MASK 1 +/** The time offset. */ +#define RTNET_DHCP_OPT_TIME_OFFSET 2 +/** The routers for the subnet. */ +#define RTNET_DHCP_OPT_ROUTERS 3 +/** Domain Name Server. */ +#define RTNET_DHCP_OPT_DNS 6 +/** Host name. */ +#define RTNET_DHCP_OPT_HOST_NAME 12 +/** Domain name. */ +#define RTNET_DHCP_OPT_DOMAIN_NAME 15 + +/** The requested address. */ +#define RTNET_DHCP_OPT_REQ_ADDR 50 +/** The lease time in seconds. */ +#define RTNET_DHCP_OPT_LEASE_TIME 51 +/** Option overload. + * Indicates that the bp_file and/or bp_sname holds contains DHCP options. */ +#define RTNET_DHCP_OPT_OPTION_OVERLOAD 52 +/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_*. */ +#define RTNET_DHCP_OPT_MSG_TYPE 53 +/** Server ID. */ +#define RTNET_DHCP_OPT_SERVER_ID 54 +/** Parameter request list. */ +#define RTNET_DHCP_OPT_PARAM_REQ_LIST 55 +/** The maximum DHCP message size a client is willing to accept. */ +#define RTNET_DHCP_OPT_MAX_DHCP_MSG_SIZE 57 +/** Client ID. */ +#define RTNET_DHCP_OPT_CLIENT_ID 61 +/** TFTP server name. */ +#define RTNET_DHCP_OPT_TFTP_SERVER_NAME 66 +/** Bootfile name. */ +#define RTNET_DHCP_OPT_BOOTFILE_NAME 67 + +/** Marks the end of the DHCP options, this has no dhcp_len field. */ +#define RTNET_DHCP_OPT_END 255 +/** @} */ + +/** @name DHCP Option overload flags (option 52) + * @{ */ +#define RTNET_DHCP_OPTION_OVERLOAD_FILE 1 +#define RTNET_DHCP_OPTION_OVERLOAD_SNAME 2 +#define RTNET_DHCP_OPTION_OVERLOAD_MASK 3 +/** @} */ + +/** @name DHCP Message Types (option 53) + * @{ */ +#define RTNET_DHCP_MT_DISCOVER 1 +#define RTNET_DHCP_MT_OFFER 2 +#define RTNET_DHCP_MT_REQUEST 3 +#define RTNET_DHCP_MT_DECLINE 4 +#define RTNET_DHCP_MT_ACK 5 +#define RTNET_DHCP_MT_NAC 6 +#define RTNET_DHCP_MT_RELEASE 7 +#define RTNET_DHCP_MT_INFORM 8 +/** @} */ + +/** @name DHCP Flags + * @{ */ +#define RTNET_DHCP_FLAG_BROADCAST 0x8000 +/** @} */ + +RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType); + + +/** + * IPv4 DHCP packet. + * @deprecated Use RTNETBOOTP. + */ +#pragma pack(1) +typedef struct RTNETDHCP +{ + /** 00 - The packet opcode. */ + uint8_t Op; + /** Hardware address type. */ + uint8_t HType; + /** Hardware address length. */ + uint8_t HLen; + uint8_t Hops; + uint32_t XID; + uint16_t Secs; + uint16_t Flags; + /** Client IPv4 address. */ + RTNETADDRIPV4 CIAddr; + /** Your IPv4 address. */ + RTNETADDRIPV4 YIAddr; + /** Server IPv4 address. */ + RTNETADDRIPV4 SIAddr; + /** Gateway IPv4 address. */ + RTNETADDRIPV4 GIAddr; + /** Client hardware address. */ + uint8_t CHAddr[16]; + /** Server name. */ + uint8_t SName[64]; + uint8_t File[128]; + uint8_t abMagic[4]; + uint8_t DhcpOpt; + uint8_t DhcpLen; /* 1 */ + uint8_t DhcpReq; + uint8_t abOptions[57]; +} RTNETDHCP; +#pragma pack() +/** @todo AssertCompileSize(RTNETDHCP, ); */ +/** Pointer to a DHCP packet. */ +typedef RTNETDHCP *PRTNETDHCP; +/** Pointer to a const DHCP packet. */ +typedef RTNETDHCP const *PCRTNETDHCP; + + +/** + * TCP packet. + */ +#pragma pack(1) +typedef struct RTNETTCP +{ + /** 00 - The source port. */ + uint16_t th_sport; + /** 02 - The destination port. */ + uint16_t th_dport; + /** 04 - The sequence number. */ + uint32_t th_seq; + /** 08 - The acknowledgement number. */ + uint32_t th_ack; +#ifdef RT_BIG_ENDIAN + unsigned int th_win : 16; + unsigned int th_flags : 8; + unsigned int th_off : 4; + unsigned int th_x2 : 4; +#else + /** 0c:0 - Reserved. */ + unsigned int th_x2 : 4; + /** 0c:4 - The data offset given as a dword count from the start of this header. */ + unsigned int th_off : 4; + /** 0d - flags. */ + unsigned int th_flags : 8; + /** 0e - The window. */ + unsigned int th_win : 16; +#endif + /** 10 - The checksum of the pseudo header, the TCP header and the data. */ + uint16_t th_sum; + /** 12 - The urgent pointer. */ + uint16_t th_urp; + /* (options follows here and then the data (aka text).) */ +} RTNETTCP; +#pragma pack() +AssertCompileSize(RTNETTCP, 20); +/** Pointer to a TCP packet. */ +typedef RTNETTCP *PRTNETTCP; +/** Pointer to a const TCP packet. */ +typedef RTNETTCP const *PCRTNETTCP; + +/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */ +#define RTNETTCP_MIN_LEN (20) + +/** @name TCP flags (RTNETTCP::th_flags) + * @{ */ +#define RTNETTCP_F_FIN 0x01 +#define RTNETTCP_F_SYN 0x02 +#define RTNETTCP_F_RST 0x04 +#define RTNETTCP_F_PSH 0x08 +#define RTNETTCP_F_ACK 0x10 +#define RTNETTCP_F_URG 0x20 +#define RTNETTCP_F_ECE 0x40 +#define RTNETTCP_F_CWR 0x80 +/** @} */ + +RTDECL(uint16_t) RTNetTCPChecksum(uint32_t u32Sum, PCRTNETTCP pTcpHdr, void const *pvData, size_t cbData); +RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum); +RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData); +RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax); +RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData, + size_t cbPktMax, bool fChecksum); + + +/** + * IPv4 ICMP packet header. + */ +#pragma pack(1) +typedef struct RTNETICMPV4HDR +{ + /** 00 - The ICMP message type. */ + uint8_t icmp_type; + /** 01 - Type specific code that further qualifies the message. */ + uint8_t icmp_code; + /** 02 - Checksum of the ICMP message. */ + uint16_t icmp_cksum; +} RTNETICMPV4HDR; +#pragma pack() +AssertCompileSize(RTNETICMPV4HDR, 4); +/** Pointer to an ICMP packet header. */ +typedef RTNETICMPV4HDR *PRTNETICMPV4HDR; +/** Pointer to a const ICMP packet header. */ +typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR; + +/** @name ICMP (v4) message types. + * @{ */ +#define RTNETICMPV4_TYPE_ECHO_REPLY 0 +#define RTNETICMPV4_TYPE_ECHO_REQUEST 8 +#define RTNETICMPV4_TYPE_TRACEROUTE 30 +/** @} */ + +/** + * IPv4 ICMP ECHO Reply & Request packet. + */ +#pragma pack(1) +typedef struct RTNETICMPV4ECHO +{ + /** 00 - The ICMP header. */ + RTNETICMPV4HDR Hdr; + /** 04 - The identifier to help the requestor match up the reply. + * Can be 0. Typically fixed value. */ + uint16_t icmp_id; + /** 06 - The sequence number to help the requestor match up the reply. + * Can be 0. Typically incrementing between requests. */ + uint16_t icmp_seq; + /** 08 - Variable length data that is to be returned unmodified in the reply. */ + uint8_t icmp_data[1]; +} RTNETICMPV4ECHO; +#pragma pack() +AssertCompileSize(RTNETICMPV4ECHO, 9); +/** Pointer to an ICMP ECHO packet. */ +typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO; +/** Pointer to a const ICMP ECHO packet. */ +typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO; + +/** + * IPv4 ICMP TRACEROUTE packet. + * This is an reply to an IP packet with the traceroute option set. + */ +#pragma pack(1) +typedef struct RTNETICMPV4TRACEROUTE +{ + /** 00 - The ICMP header. */ + RTNETICMPV4HDR Hdr; + /** 04 - Identifier copied from the traceroute option's ID number. */ + uint16_t icmp_id; + /** 06 - Unused. (Possibly an icmp_seq?) */ + uint16_t icmp_void; + /** 08 - Outbound hop count. From the IP packet causing this message. */ + uint16_t icmp_ohc; + /** 0a - Return hop count. From the IP packet causing this message. */ + uint16_t icmp_rhc; + /** 0c - Output link speed, 0 if not known. */ + uint32_t icmp_speed; + /** 10 - Output link MTU, 0 if not known. */ + uint32_t icmp_mtu; +} RTNETICMPV4TRACEROUTE; +#pragma pack() +AssertCompileSize(RTNETICMPV4TRACEROUTE, 20); +/** Pointer to an ICMP TRACEROUTE packet. */ +typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE; +/** Pointer to a const ICMP TRACEROUTE packet. */ +typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE; + +/** @todo add more ICMPv4 as needed. */ + +/** + * IPv4 ICMP union packet. + */ +typedef union RTNETICMPV4 +{ + RTNETICMPV4HDR Hdr; + RTNETICMPV4ECHO Echo; + RTNETICMPV4TRACEROUTE Traceroute; +} RTNETICMPV4; +/** Pointer to an ICMP union packet. */ +typedef RTNETICMPV4 *PRTNETICMPV4; +/** Pointer to a const ICMP union packet. */ +typedef RTNETICMPV4 const *PCRTNETICMPV4; + + +/** + * IPv6 ICMP packet header. + */ +#pragma pack(1) +typedef struct RTNETICMPV6HDR +{ + /** 00 - The ICMPv6 message type. */ + uint8_t icmp6_type; + /** 01 - Type specific code that further qualifies the message. */ + uint8_t icmp6_code; + /** 02 - Checksum of the ICMPv6 message. */ + uint16_t icmp6_cksum; +} RTNETICMPV6HDR; +#pragma pack() +AssertCompileSize(RTNETICMPV6HDR, 4); +/** Pointer to an ICMPv6 packet header. */ +typedef RTNETICMPV6HDR *PRTNETICMPV6HDR; +/** Pointer to a const ICMP packet header. */ +typedef RTNETICMPV6HDR const *PCRTNETICMPV6HDR; + +#define RTNETIPV6_PROT_ICMPV6 (58) + +/** @name Internet Control Message Protocol version 6 (ICMPv6) message types. + * @{ */ +#define RTNETIPV6_ICMP_TYPE_RS 133 +#define RTNETIPV6_ICMP_TYPE_RA 134 +#define RTNETIPV6_ICMP_TYPE_NS 135 +#define RTNETIPV6_ICMP_TYPE_NA 136 +#define RTNETIPV6_ICMP_TYPE_RDR 137 +/** @} */ + +/** @name Neighbor Discovery option types + * @{ */ +#define RTNETIPV6_ICMP_ND_SLLA_OPT (1) +#define RTNETIPV6_ICMP_ND_TLLA_OPT (2) +/** @} */ + +/** ICMPv6 ND Source/Target Link Layer Address option */ +#pragma pack(1) +typedef struct RTNETNDP_LLA_OPT +{ + uint8_t type; + uint8_t len; + RTMAC lla; +} RTNETNDP_LLA_OPT; +#pragma pack() + +AssertCompileSize(RTNETNDP_LLA_OPT, 1+1+6); + +typedef RTNETNDP_LLA_OPT *PRTNETNDP_LLA_OPT; +typedef RTNETNDP_LLA_OPT const *PCRTNETNDP_LLA_OPT; + +/** ICMPv6 ND Neighbor Sollicitation */ +#pragma pack(1) +typedef struct RTNETNDP +{ + /** 00 - The ICMPv6 header. */ + RTNETICMPV6HDR Hdr; + /** 04 - reserved */ + uint32_t reserved; + /** 08 - target address */ + RTNETADDRIPV6 target_address; +} RTNETNDP; +#pragma pack() +AssertCompileSize(RTNETNDP, 4+4+16); +/** Pointer to a NDP ND packet. */ +typedef RTNETNDP *PRTNETNDP; +/** Pointer to a const NDP NS packet. */ +typedef RTNETNDP const *PCRTNETNDP; + + +/** + * Ethernet ARP header. + */ +#pragma pack(1) +typedef struct RTNETARPHDR +{ + /** The hardware type. */ + uint16_t ar_htype; + /** The protocol type (ethertype). */ + uint16_t ar_ptype; + /** The hardware address length. */ + uint8_t ar_hlen; + /** The protocol address length. */ + uint8_t ar_plen; + /** The operation. */ + uint16_t ar_oper; +} RTNETARPHDR; +#pragma pack() +AssertCompileSize(RTNETARPHDR, 8); +/** Pointer to an ethernet ARP header. */ +typedef RTNETARPHDR *PRTNETARPHDR; +/** Pointer to a const ethernet ARP header. */ +typedef RTNETARPHDR const *PCRTNETARPHDR; + +/** ARP hardware type - ethernet. */ +#define RTNET_ARP_ETHER UINT16_C(1) + +/** @name ARP operations + * @{ */ +#define RTNET_ARPOP_REQUEST UINT16_C(1) /**< Request hardware address given a protocol address (ARP). */ +#define RTNET_ARPOP_REPLY UINT16_C(2) +#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /**< Request protocol address given a hardware address (RARP). */ +#define RTNET_ARPOP_REVREPLY UINT16_C(4) +#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /**< Inverse ARP. */ +#define RTNET_ARPOP_INVREPLY UINT16_C(9) +/** Check if an ARP operation is a request or not. */ +#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1) +/** Check if an ARP operation is a reply or not. */ +#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op)) +/** @} */ + + +/** + * Ethernet IPv4 + 6-byte MAC ARP request packet. + */ +#pragma pack(1) +typedef struct RTNETARPIPV4 +{ + /** ARP header. */ + RTNETARPHDR Hdr; + /** The sender hardware address. */ + RTMAC ar_sha; + /** The sender protocol address. */ + RTNETADDRIPV4 ar_spa; + /** The target hardware address. */ + RTMAC ar_tha; + /** The target protocol address. */ + RTNETADDRIPV4 ar_tpa; +} RTNETARPIPV4; +#pragma pack() +AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4); +/** Pointer to an ethernet IPv4+MAC ARP request packet. */ +typedef RTNETARPIPV4 *PRTNETARPIPV4; +/** Pointer to a const ethernet IPv4+MAC ARP request packet. */ +typedef RTNETARPIPV4 const *PCRTNETARPIPV4; + + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_net_h */ + |