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Diffstat (limited to 'mdk-stage1/rp-pppoe/src/pppoe.h')
| -rw-r--r-- | mdk-stage1/rp-pppoe/src/pppoe.h | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/mdk-stage1/rp-pppoe/src/pppoe.h b/mdk-stage1/rp-pppoe/src/pppoe.h deleted file mode 100644 index da300c17d..000000000 --- a/mdk-stage1/rp-pppoe/src/pppoe.h +++ /dev/null @@ -1,331 +0,0 @@ -/*********************************************************************** -* -* pppoe.h -* -* Declaration of various PPPoE constants -* -* Copyright (C) 2000 Roaring Penguin Software Inc. -* -* This program may be distributed according to the terms of the GNU -* General Public License, version 2 or (at your option) any later version. -* -* $Id$ -* -***********************************************************************/ - -#ifdef __sun__ -#define __EXTENSIONS__ -#endif - -#include "config.h" - -#if defined(HAVE_NETPACKET_PACKET_H) || defined(HAVE_LINUX_IF_PACKET_H) -#define _POSIX_SOURCE 1 /* For sigaction defines */ -#endif - -#include <stdio.h> /* For FILE */ -#include <sys/types.h> /* For pid_t */ - -/* How do we access raw Ethernet devices? */ -#undef USE_LINUX_PACKET -#undef USE_BPF - -#if defined(HAVE_NETPACKET_PACKET_H) || defined(HAVE_LINUX_IF_PACKET_H) -#define USE_LINUX_PACKET 1 -#elif defined(HAVE_NET_BPF_H) -#define USE_BPF 1 -#elif defined(HAVE_SYS_DLPI_H) -#define USE_DLPI -#endif - -/* Sanity check */ -#if !defined(USE_BPF) && !defined(USE_LINUX_PACKET) && !defined(USE_DLPI) -#error Unknown method for accessing raw Ethernet frames -#endif - -#ifdef HAVE_SYS_CDEFS_H -#include <sys/cdefs.h> -#endif - -#ifdef HAVE_SYS_SOCKET_H -#include <sys/socket.h> -#endif - -/* Ugly header files on some Linux boxes... */ -#if defined(HAVE_LINUX_IF_H) -#include <linux/if.h> -#elif defined(HAVE_NET_IF_H) -#include <net/if.h> -#endif - -#ifdef HAVE_NET_IF_TYPES_H -#include <net/if_types.h> -#endif - -#ifdef HAVE_NET_IF_DL_H -#include <net/if_dl.h> -#endif - -/* I'm not sure why this is needed... I do not have OpenBSD */ -#if defined(__OpenBSD__) -#include <net/ppp_defs.h> -#include <net/if_ppp.h> -#endif - -#ifdef USE_BPF -extern int bpfSize; -struct PPPoEPacketStruct; -void sessionDiscoveryPacket(struct PPPoEPacketStruct *packet); -#define BPF_BUFFER_IS_EMPTY (bpfSize <= 0) -#define BPF_BUFFER_HAS_DATA (bpfSize > 0) -#define ethhdr ether_header -#define h_dest ether_dhost -#define h_source ether_shost -#define h_proto ether_type -#define ETH_DATA_LEN ETHERMTU -#define ETH_ALEN ETHER_ADDR_LEN -#else -#undef USE_BPF -#define BPF_BUFFER_IS_EMPTY 1 -#define BPF_BUFFER_HAS_DATA 0 -#endif - -#ifdef USE_DLPI -#include <sys/ethernet.h> -#define ethhdr ether_header -#define ETH_DATA_LEN ETHERMTU -#define ETH_ALEN ETHERADDRL -#define h_dest ether_dhost.ether_addr_octet -#define h_source ether_shost.ether_addr_octet -#define h_proto ether_type - -/* cloned from dltest.h */ -#define MAXDLBUF 8192 -#define MAXDLADDR 1024 -#define MAXWAIT 15 -#define OFFADDR(s, n) (u_char*)((char*)(s) + (int)(n)) -#define CASERET(s) case s: return ("s") - -#endif - -/* Define various integer types -- assumes a char is 8 bits */ -#if SIZEOF_UNSIGNED_SHORT == 2 -typedef unsigned short UINT16_t; -#elif SIZEOF_UNSIGNED_INT == 2 -typedef unsigned int UINT16_t; -#else -#error Could not find a 16-bit integer type -#endif - -#if SIZEOF_UNSIGNED_SHORT == 4 -typedef unsigned short UINT32_t; -#elif SIZEOF_UNSIGNED_INT == 4 -typedef unsigned int UINT32_t; -#elif SIZEOF_UNSIGNED_LONG == 4 -typedef unsigned long UINT32_t; -#else -#error Could not find a 16-bit integer type -#endif - -#ifdef HAVE_LINUX_IF_ETHER_H -#include <linux/if_ether.h> -#endif - -#include <netinet/in.h> - -#ifdef HAVE_NETINET_IF_ETHER_H -#include <sys/types.h> - -#ifdef HAVE_SYS_SOCKET_H -#include <sys/socket.h> -#endif -#ifndef HAVE_SYS_DLPI_H -#include <netinet/if_ether.h> -#endif -#endif - - - -/* Ethernet frame types according to RFC 2516 */ -#define ETH_PPPOE_DISCOVERY 0x8863 -#define ETH_PPPOE_SESSION 0x8864 - -/* But some brain-dead peers disobey the RFC, so frame types are variables */ -extern UINT16_t Eth_PPPOE_Discovery; -extern UINT16_t Eth_PPPOE_Session; - -/* PPPoE codes */ -#define CODE_PADI 0x09 -#define CODE_PADO 0x07 -#define CODE_PADR 0x19 -#define CODE_PADS 0x65 -#define CODE_PADT 0xA7 -#define CODE_SESS 0x00 - -/* PPPoE Tags */ -#define TAG_END_OF_LIST 0x0000 -#define TAG_SERVICE_NAME 0x0101 -#define TAG_AC_NAME 0x0102 -#define TAG_HOST_UNIQ 0x0103 -#define TAG_AC_COOKIE 0x0104 -#define TAG_VENDOR_SPECIFIC 0x0105 -#define TAG_RELAY_SESSION_ID 0x0110 -#define TAG_SERVICE_NAME_ERROR 0x0201 -#define TAG_AC_SYSTEM_ERROR 0x0202 -#define TAG_GENERIC_ERROR 0x0203 - -/* Discovery phase states */ -#define STATE_SENT_PADI 0 -#define STATE_RECEIVED_PADO 1 -#define STATE_SENT_PADR 2 -#define STATE_SESSION 3 -#define STATE_TERMINATED 4 - -/* How many PADI/PADS attempts? */ -#define MAX_PADI_ATTEMPTS 3 - -/* Initial timeout for PADO/PADS */ -#define PADI_TIMEOUT 5 - -/* States for scanning PPP frames */ -#define STATE_WAITFOR_FRAME_ADDR 0 -#define STATE_DROP_PROTO 1 -#define STATE_BUILDING_PACKET 2 - -/* Special PPP frame characters */ -#define FRAME_ESC 0x7D -#define FRAME_FLAG 0x7E -#define FRAME_ADDR 0xFF -#define FRAME_CTRL 0x03 -#define FRAME_ENC 0x20 - -#define IPV4ALEN 4 -#define SMALLBUF 256 - -/* A PPPoE Packet, including Ethernet headers */ -typedef struct PPPoEPacketStruct { - struct ethhdr ethHdr; /* Ethernet header */ -#ifdef PACK_BITFIELDS_REVERSED - unsigned int type:4; /* PPPoE Type (must be 1) */ - unsigned int ver:4; /* PPPoE Version (must be 1) */ -#else - unsigned int ver:4; /* PPPoE Version (must be 1) */ - unsigned int type:4; /* PPPoE Type (must be 1) */ -#endif - unsigned int code:8; /* PPPoE code */ - unsigned int session:16; /* PPPoE session */ - unsigned int length:16; /* Payload length */ - unsigned char payload[ETH_DATA_LEN]; /* A bit of room to spare */ -} PPPoEPacket; - -/* Header size of a PPPoE packet */ -#define PPPOE_OVERHEAD 6 /* type, code, session, length */ -#define HDR_SIZE (sizeof(struct ethhdr) + PPPOE_OVERHEAD) -#define MAX_PPPOE_PAYLOAD (ETH_DATA_LEN - PPPOE_OVERHEAD) -#define MAX_PPPOE_MTU (MAX_PPPOE_PAYLOAD - 2) - -/* PPPoE Tag */ - -typedef struct PPPoETagStruct { - unsigned int type:16; /* tag type */ - unsigned int length:16; /* Length of payload */ - unsigned char payload[ETH_DATA_LEN]; /* A LOT of room to spare */ -} PPPoETag; -/* Header size of a PPPoE tag */ -#define TAG_HDR_SIZE 4 - -/* Chunk to read from stdin */ -#define READ_CHUNK 4096 - -/* Function passed to parsePacket */ -typedef void ParseFunc(UINT16_t type, - UINT16_t len, - unsigned char *data, - void *extra); - -/* Structures used by PPPoE server */ -struct ClientSession { - pid_t pid; /* PID of child handling session */ - unsigned char ip[IPV4ALEN]; /* IP address of peer */ - UINT16_t sess; /* Session number */ - unsigned char eth[ETH_ALEN]; /* Peer's Ethernet address */ - int recvdPADT; /* Peer sent a PADT */ -}; - -#define PPPINITFCS16 0xffff /* Initial FCS value */ - -/* Keep track of the state of a connection -- collect everything in - one spot */ - -typedef struct PPPoEConnectionStruct { - int discoveryState; /* Where we are in discovery */ - int discoverySocket; /* Raw socket for discovery frames */ - int sessionSocket; /* Raw socket for session frames */ - unsigned char myEth[ETH_ALEN]; /* My MAC address */ - unsigned char peerEth[ETH_ALEN]; /* Peer's MAC address */ - UINT16_t session; /* Session ID */ - char *ifName; /* Interface name */ - char *serviceName; /* Desired service name, if any */ - char *acName; /* Desired AC name, if any */ - int synchronous; /* Use synchronous PPP */ - int useHostUniq; /* Use Host-Uniq tag */ - int printACNames; /* Just print AC names */ - int skipDiscovery; /* Skip discovery */ - int noDiscoverySocket; /* Don't even open discovery socket */ - int killSession; /* Kill session and exit */ - FILE *debugFile; /* Debug file for dumping packets */ - int numPADOs; /* Number of PADO packets received */ - PPPoETag cookie; /* We have to send this if we get it */ - PPPoETag relayId; /* Ditto */ -} PPPoEConnection; - -/* Structure used to determine acceptable PADO or PADS packet */ -struct PacketCriteria { - PPPoEConnection *conn; - int acNameOK; - int serviceNameOK; -}; - -/* Function Prototypes */ -UINT16_t etherType(PPPoEPacket *packet); -int openInterface(char const *ifname, UINT16_t type, unsigned char *hwaddr); -int sendPacket(PPPoEConnection *conn, int sock, PPPoEPacket *pkt, int size); -int receivePacket(int sock, PPPoEPacket *pkt, int *size); -void fatalSys(char const *str); -void rp_fatal(char const *str); -void printErr(char const *str); -void sysErr(char const *str); -void dumpPacket(FILE *fp, PPPoEPacket *packet, char const *dir); -void dumpHex(FILE *fp, unsigned char const *buf, int len); -int parsePacket(PPPoEPacket *packet, ParseFunc *func, void *extra); -void parseLogErrs(UINT16_t typ, UINT16_t len, unsigned char *data, void *xtra); -void syncReadFromPPP(PPPoEConnection *conn, PPPoEPacket *packet); -void asyncReadFromPPP(PPPoEConnection *conn, PPPoEPacket *packet); -void asyncReadFromEth(PPPoEConnection *conn, int sock, int clampMss); -void syncReadFromEth(PPPoEConnection *conn, int sock, int clampMss); -char *strDup(char const *str); -void sendPADT(PPPoEConnection *conn, char const *msg); -void sendSessionPacket(PPPoEConnection *conn, - PPPoEPacket *packet, int len); -void initPPP(void); -void clampMSS(PPPoEPacket *packet, char const *dir, int clampMss); -UINT16_t computeTCPChecksum(unsigned char *ipHdr, unsigned char *tcpHdr); -UINT16_t pppFCS16(UINT16_t fcs, unsigned char *cp, int len); -void discovery(PPPoEConnection *conn); -unsigned char *findTag(PPPoEPacket *packet, UINT16_t tagType, - PPPoETag *tag); - -#define SET_STRING(var, val) do { if (var) free(var); var = strDup(val); } while(0); - -#define CHECK_ROOM(cursor, start, len) \ -do {\ - if (((cursor)-(start))+(len) > MAX_PPPOE_PAYLOAD) { \ - syslog(LOG_ERR, "Would create too-long packet"); \ - return; \ - } \ -} while(0) - -/* True if Ethernet address is broadcast or multicast */ -#define NOT_UNICAST(e) ((e[0] & 0x01) != 0) -#define BROADCAST(e) ((e[0] & e[1] & e[2] & e[3] & e[4] & e[5]) == 0xFF) -#define NOT_BROADCAST(e) ((e[0] & e[1] & e[2] & e[3] & e[4] & e[5]) != 0xFF) |