X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;ds=sidebyside;f=pppd%2Fplugins%2Frp-pppoe%2Fpppoe.h;fp=pppd%2Fplugins%2Frp-pppoe%2Fpppoe.h;h=0000000000000000000000000000000000000000;hb=b2c36e6c0e1655aea9b1b0a03a8160f42a26c884;hp=e2dc2ff9c00260d8437274941db0eb3ee20c7d97;hpb=f1e3aa2dc7e7772d8491c6ff61e4e6d28af33d4b;p=ppp.git diff --git a/pppd/plugins/rp-pppoe/pppoe.h b/pppd/plugins/rp-pppoe/pppoe.h deleted file mode 100644 index e2dc2ff..0000000 --- a/pppd/plugins/rp-pppoe/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: pppoe.h,v 1.4 2008/06/15 04:35:50 paulus Exp $ -* -***********************************************************************/ - -#include "config.h" - -#include /* For FILE */ -#include /* For pid_t */ -#include -#include - -#include "pppd/pppd.h" /* For error */ - -/* 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_SYS_DLPI_H) -#define USE_DLPI -#elif defined(HAVE_NET_BPF_H) -#define USE_BPF 1 -#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_SOCKET_H -#include -#endif - -/* This has to be included before Linux 4.8's linux/in.h - * gets dragged in. */ -#include - -/* Ugly header files on some Linux boxes... */ -#if defined(HAVE_LINUX_IF_H) -#include -#elif defined(HAVE_NET_IF_H) -#include -#endif - -#ifdef HAVE_NET_IF_TYPES_H -#include -#endif - -#define BPF_BUFFER_IS_EMPTY 1 -#define BPF_BUFFER_HAS_DATA 0 - -/* 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 32-bit integer type -#endif - -#ifdef HAVE_LINUX_IF_ETHER_H -#include -#else - -#ifdef HAVE_NETINET_IF_ETHER_H -#include - -#ifdef HAVE_SYS_SOCKET_H -#include -#endif -#ifndef HAVE_SYS_DLPI_H -#include -#endif -#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 - -/* Extensions from draft-carrel-info-pppoe-ext-00 */ -/* I do NOT like PADM or PADN, but they are here for completeness */ -#define CODE_PADM 0xD3 -#define CODE_PADN 0xD4 - -#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_PPP_MAX_PAYLOAD 0x0120 -#define TAG_SERVICE_NAME_ERROR 0x0201 -#define TAG_AC_SYSTEM_ERROR 0x0202 -#define TAG_GENERIC_ERROR 0x0203 - -/* Extensions from draft-carrel-info-pppoe-ext-00 */ -/* I do NOT like these tags one little bit */ -#define TAG_HURL 0x111 -#define TAG_MOTM 0x112 -#define TAG_IP_ROUTE_ADD 0x121 - -/* 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 - -/* There are other fixed-size buffers preventing - this from being increased to 16110. The buffer - sizes would need to be properly de-coupled from - the default MRU. For now, getting up to 1500 is - enough. */ -#define ETH_JUMBO_LEN 1508 - -/* A PPPoE Packet, including Ethernet headers */ -typedef struct PPPoEPacketStruct { - struct ethhdr ethHdr; /* Ethernet header */ - unsigned int vertype:8; /* PPPoE Version and Type (must both be 1) */ - unsigned int code:8; /* PPPoE code */ - unsigned int session:16; /* PPPoE session */ - unsigned int length:16; /* Payload length */ - unsigned char payload[ETH_JUMBO_LEN]; /* A bit of room to spare */ -} PPPoEPacket; - -#define PPPOE_VER(vt) ((vt) >> 4) -#define PPPOE_TYPE(vt) ((vt) & 0xf) -#define PPPOE_VER_TYPE(v, t) (((v) << 4) | (t)) - -/* 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_JUMBO_LEN - PPPOE_OVERHEAD) -#define PPP_OVERHEAD 2 /* protocol */ -#define MAX_PPPOE_MTU (MAX_PPPOE_PAYLOAD - PPP_OVERHEAD) -#define TOTAL_OVERHEAD (PPPOE_OVERHEAD + PPP_OVERHEAD) -#define ETH_PPPOE_MTU (ETH_DATA_LEN - TOTAL_OVERHEAD) - -/* PPPoE Tag */ - -typedef struct PPPoETagStruct { - unsigned int type:16; /* tag type */ - unsigned int length:16; /* Length of payload */ - unsigned char payload[ETH_JUMBO_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); - -#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 */ - unsigned char req_peer_mac[ETH_ALEN]; /* required peer MAC address */ - unsigned char req_peer; /* require mac addr to match req_peer_mac */ - 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 */ - PPPoETag hostUniq; /* Use Host-Uniq tag */ - int printACNames; /* Just print AC names */ - 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 */ - int error; /* Error packet received */ - int debug; /* Set to log packets sent and received */ - int discoveryTimeout; /* Timeout for discovery packets */ - int discoveryAttempts; /* Number of discovery attempts */ - int seenMaxPayload; - int mtu; /* Stored MTU */ - int mru; /* Stored MRU */ -} PPPoEConnection; - -/* Structure used to determine acceptable PADO or PADS packet */ -struct PacketCriteria { - PPPoEConnection *conn; - int acNameOK; - int serviceNameOK; - int seenACName; - int seenServiceName; -}; - -/* 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); - -void pppoe_printpkt(PPPoEPacket *packet, - void (*printer)(void *, char *, ...), void *arg); -void pppoe_log_packet(const char *prefix, PPPoEPacket *packet); - -static inline int parseHostUniq(const char *uniq, PPPoETag *tag) -{ - unsigned i, len = strlen(uniq); - -#define hex(x) \ - (((x) <= '9') ? ((x) - '0') : \ - (((x) <= 'F') ? ((x) - 'A' + 10) : \ - ((x) - 'a' + 10))) - - if (!len || len % 2 || len / 2 > sizeof(tag->payload)) - return 0; - - for (i = 0; i < len; i += 2) { - if (!isxdigit(uniq[i]) || !isxdigit(uniq[i+1])) - return 0; - - tag->payload[i / 2] = (char)(hex(uniq[i]) << 4 | hex(uniq[i+1])); - } - -#undef hex - - tag->type = htons(TAG_HOST_UNIQ); - tag->length = htons(len / 2); - return 1; -} - -#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) { \ - error("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)