***********************************************************************/
static char const RCSID[] =
-"$Id: if.c,v 1.1 2001/12/14 02:55:20 mostrows Exp $";
+"$Id: if.c,v 1.2 2008/06/09 08:34:23 paulus Exp $";
+#define _GNU_SOURCE 1
#include "pppoe.h"
+#include "pppd/pppd.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#include <sys/ioctl.h>
#endif
-#ifdef HAVE_SYSLOG_H
-#include <syslog.h>
-#endif
-
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <net/if_arp.h>
#endif
-#ifdef USE_DLPI
-
-#include <limits.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/stream.h>
-#include <sys/stropts.h>
-#include <sys/dlpi.h>
-#include <sys/bufmod.h>
-#include <stdio.h>
-#include <signal.h>
-#include <stropts.h>
-
-/* function declarations */
-
-void dlpromisconreq( int fd, u_long level);
-void dlinforeq(int fd);
-void dlunitdatareq(int fd, u_char *addrp, int addrlen, u_long minpri, u_long maxpri, u_char *datap, int datalen);
-void dlinfoack(int fd, char *bufp);
-void dlbindreq(int fd, u_long sap, u_long max_conind, u_long service_mode, u_long conn_mgmt, u_long xidtest);
-void dlattachreq(int fd, u_long ppa);
-void dlokack(int fd, char *bufp);
-void dlbindack(int fd, char *bufp);
-int strioctl(int fd, int cmd, int timout, int len, char *dp);
-void strgetmsg(int fd, struct strbuf *ctlp, struct strbuf *datap, int *flagsp, char *caller);
-void sigalrm(int sig);
-void expecting(int prim, union DL_primitives *dlp);
-char *dlprim(u_long prim);
-
-/* #define DL_DEBUG */
-
-static int dl_abssaplen;
-static int dl_saplen;
-static int dl_addrlen;
-
-#endif
-
-#ifdef USE_BPF
-#include <net/bpf.h>
-#include <fcntl.h>
-
-unsigned char *bpfBuffer; /* Packet filter buffer */
-int bpfLength = 0; /* Packet filter buffer length */
-int bpfSize = 0; /* Number of unread bytes in buffer */
-int bpfOffset = 0; /* Current offset in bpfBuffer */
-#endif
-
/* Initialize frame types to RFC 2516 values. Some broken peers apparently
use different frame types... sigh... */
{
UINT16_t type = (UINT16_t) ntohs(packet->ethHdr.h_proto);
if (type != Eth_PPPOE_Discovery && type != Eth_PPPOE_Session) {
- syslog(LOG_ERR, "Invalid ether type 0x%x", type);
+ error("Invalid ether type 0x%x", type);
}
return type;
}
-#ifdef USE_BPF
-/**********************************************************************
-*%FUNCTION: getHWaddr
-*%ARGUMENTS:
-* ifname -- name of interface
-* hwaddr -- buffer for ehthernet address
-*%RETURNS:
-* Nothing
-*%DESCRIPTION:
-* Locates the Ethernet hardware address for an interface.
-***********************************************************************/
-void
-getHWaddr(int sock, char const *ifname, unsigned char *hwaddr)
-{
- char inbuf[8192];
- const struct sockaddr_dl *sdl;
- struct ifconf ifc;
- struct ifreq ifreq, *ifr;
- int i;
- int found = 0;
-
- ifc.ifc_len = sizeof(inbuf);
- ifc.ifc_buf = inbuf;
- if (ioctl(sock, SIOCGIFCONF, &ifc) < 0) {
- fatalSys("SIOCGIFCONF");
- }
- ifr = ifc.ifc_req;
- ifreq.ifr_name[0] = '\0';
- for (i = 0; i < ifc.ifc_len; ) {
- ifr = (struct ifreq *)((caddr_t)ifc.ifc_req + i);
- i += sizeof(ifr->ifr_name) +
- (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)
- ? ifr->ifr_addr.sa_len
- : sizeof(struct sockaddr));
- if (ifr->ifr_addr.sa_family == AF_LINK) {
- sdl = (const struct sockaddr_dl *) &ifr->ifr_addr;
- if ((sdl->sdl_type == IFT_ETHER) &&
- (sdl->sdl_alen == ETH_ALEN) &&
- !strncmp(ifname, ifr->ifr_name, sizeof(ifr->ifr_name))) {
- if (found) {
- char buffer[256];
- sprintf(buffer, "interface %.16s has more than one ethernet address", ifname);
- rp_fatal(buffer);
- } else {
- found = 1;
- memcpy(hwaddr, LLADDR(sdl), ETH_ALEN);
- }
- }
- }
- }
- if (!found) {
- char buffer[256];
- sprintf(buffer, "interface %.16s has no ethernet address", ifname);
- rp_fatal(buffer);
- }
-}
-
-/**********************************************************************
-*%FUNCTION: initFilter
-*%ARGUMENTS:
-* fd -- file descriptor of BSD device
-* type -- Ethernet frame type (0 for watch mode)
-* hwaddr -- buffer with ehthernet address
-*%RETURNS:
-* Nothing
-*%DESCRIPTION:
-* Initializes the packet filter rules.
-***********************************************************************/
-void
-initFilter(int fd, UINT16_t type, unsigned char *hwaddr)
-{
- /* Packet Filter Instructions:
- * Note that the ethernet type names come from "pppoe.h" and are
- * used here to maintain consistency with the rest of this file. */
- static struct bpf_insn bpfRun[] = { /* run PPPoE */
- BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12), /* ethernet type */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETH_PPPOE_SESSION, 5, 0),
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ETH_PPPOE_DISCOVERY, 0, 9),
- BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 0), /* first word of dest. addr */
-#define PPPOE_BCAST_CMPW 4 /* offset of word compare */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 2),
- BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 4), /* next 1/2 word of dest. */
-#define PPPOE_BCAST_CMPH 6 /* offset of 1/2 word compare */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 4, 0),
- BPF_STMT(BPF_LD+BPF_W+BPF_ABS, 0), /* first word of dest. addr */
-#define PPPOE_FILTER_CMPW 8 /* offset of word compare */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 3),
- BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 4), /* next 1/2 word of dest. */
-#define PPPOE_FILTER_CMPH 10 /* offset of 1/rd compare */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 1),
- BPF_STMT(BPF_RET+BPF_K, (u_int) -1), /* keep packet */
- BPF_STMT(BPF_RET+BPF_K, 0), /* drop packet */
- };
-
- /* Fix the potentially varying parts */
- bpfRun[1].code = (u_short) BPF_JMP+BPF_JEQ+BPF_K;
- bpfRun[1].jt = 5;
- bpfRun[1].jf = 0;
- bpfRun[1].k = Eth_PPPOE_Session;
-
- bpfRun[2].code = (u_short) BPF_JMP+BPF_JEQ+BPF_K;
- bpfRun[2].jt = 0;
- bpfRun[2].jf = 9;
- bpfRun[2].k = Eth_PPPOE_Discovery;
-
- {
- struct bpf_insn bpfInsn[sizeof(bpfRun) / sizeof(bpfRun[0])];
- struct bpf_program bpfProgram;
- memcpy(bpfInsn, bpfRun, sizeof(bpfRun));
- bpfInsn[PPPOE_BCAST_CMPW].k = ((0xff << 24) | (0xff << 16) |
- (0xff << 8) | 0xff);
- bpfInsn[PPPOE_BCAST_CMPH].k = ((0xff << 8) | 0xff);
- bpfInsn[PPPOE_FILTER_CMPW].k = ((hwaddr[0] << 24) | (hwaddr[1] << 16) |
- (hwaddr[2] << 8) | hwaddr[3]);
- bpfInsn[PPPOE_FILTER_CMPH].k = ((hwaddr[4] << 8) | hwaddr[5]);
- bpfProgram.bf_len = (sizeof(bpfInsn) / sizeof(bpfInsn[0]));
- bpfProgram.bf_insns = &bpfInsn[0];
-
- /* Apply the filter */
- if (ioctl(fd, BIOCSETF, &bpfProgram) < 0) {
- fatalSys("ioctl(BIOCSETF)");
- }
- }
-}
-
-/**********************************************************************
-*%FUNCTION: openInterface
-*%ARGUMENTS:
-* ifname -- name of interface
-* type -- Ethernet frame type (0 for any frame type)
-* hwaddr -- if non-NULL, set to the hardware address
-*%RETURNS:
-* A file descriptor for talking with the Ethernet card. Exits on error.
-* Note that the Linux version of this routine returns a socket instead.
-*%DESCRIPTION:
-* Opens a BPF on an interface for all PPPoE traffic (discovery and
-* session). If 'type' is 0, uses promiscuous mode to watch any PPPoE
-* traffic on this network.
-***********************************************************************/
-int
-openInterface(char const *ifname, UINT16_t type, unsigned char *hwaddr)
-{
- static int fd = -1;
- char bpfName[32];
- u_int optval;
- struct bpf_version bpf_ver;
- struct ifreq ifr;
- int sock;
- int i;
-
- /* BSD only opens one socket for both Discovery and Session packets */
- if (fd >= 0) {
- return fd;
- }
-
- /* Find a free BPF device */
- for (i = 0; i < 256; i++) {
- sprintf(bpfName, "/dev/bpf%d", i);
- if (((fd = open(bpfName, O_RDWR, 0)) >= 0) ||
- (errno != EBUSY)) {
- break;
- }
- }
- if (fd < 0) {
- switch (errno) {
- case EACCES: /* permission denied */
- {
- char buffer[256];
- sprintf(buffer, "Cannot open %.32s -- pppoe must be run as root.", bpfName);
- rp_fatal(buffer);
- }
- break;
- case EBUSY:
- case ENOENT: /* no such file */
- if (i == 0) {
- rp_fatal("No /dev/bpf* devices (check your kernel configuration for BPF support)");
- } else {
- rp_fatal("All /dev/bpf* devices are in use");
- }
- break;
- }
- fatalSys(bpfName);
- }
-
- if ((sock = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) {
- fatalSys("socket");
- }
-
- /* Check that the interface is up */
- strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(sock, SIOCGIFFLAGS, &ifr) < 0) {
- fatalSys("ioctl(SIOCGIFFLAGS)");
- }
- if ((ifr.ifr_flags & IFF_UP) == 0) {
- char buffer[256];
- sprintf(buffer, "Interface %.16s is not up\n", ifname);
- rp_fatal(buffer);
- }
-
- /* Fill in hardware address and initialize the packet filter rules */
- if (hwaddr == NULL) {
- rp_fatal("openInterface: no hwaddr arg.");
- }
- getHWaddr(sock, ifname, hwaddr);
- initFilter(fd, type, hwaddr);
-
- /* Sanity check on MTU -- apparently does not work on OpenBSD */
-#if !defined(__OpenBSD__)
- strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(sock, SIOCGIFMTU, &ifr) < 0) {
- fatalSys("ioctl(SIOCGIFMTU)");
- }
- if (ifr.ifr_mtu < ETH_DATA_LEN) {
- char buffer[256];
- sprintf(buffer, "Interface %.16s has MTU of %d -- should be %d. You may have serious connection problems.",
- ifname, ifr.ifr_mtu, ETH_DATA_LEN);
- printErr(buffer);
- }
-#endif
-
- /* done with the socket */
- if (close(sock) < 0) {
- fatalSys("close");
- }
-
- /* Check the BPF version number */
- if (ioctl(fd, BIOCVERSION, &bpf_ver) < 0) {
- fatalSys("ioctl(BIOCVERSION)");
- }
- if ((bpf_ver.bv_major != BPF_MAJOR_VERSION) ||
- (bpf_ver.bv_minor < BPF_MINOR_VERSION)) {
- char buffer[256];
- sprintf(buffer, "Unsupported BPF version: %d.%d (kernel: %d.%d)",
- BPF_MAJOR_VERSION, BPF_MINOR_VERSION,
- bpf_ver.bv_major, bpf_ver.bv_minor);
- rp_fatal(buffer);
- }
-
- /* allocate a receive packet buffer */
- if (ioctl(fd, BIOCGBLEN, &bpfLength) < 0) {
- fatalSys("ioctl(BIOCGBLEN)");
- }
- if (!(bpfBuffer = (unsigned char *) malloc(bpfLength))) {
- rp_fatal("malloc");
- }
-
- /* reads should return as soon as there is a packet available */
- optval = 1;
- if (ioctl(fd, BIOCIMMEDIATE, &optval) < 0) {
- fatalSys("ioctl(BIOCIMMEDIATE)");
- }
-
- /* Bind the interface to the filter */
- strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
- if (ioctl(fd, BIOCSETIF, &ifr) < 0) {
- char buffer[256];
- sprintf(buffer, "ioctl(BIOCSETIF) can't select interface %.16s",
- ifname);
- rp_fatal(buffer);
- }
-
- syslog(LOG_INFO, "Interface=%.16s HWaddr=%02X:%02X:%02X:%02X:%02X:%02X Device=%.32s Buffer size=%d",
- ifname,
- hwaddr[0], hwaddr[1], hwaddr[2],
- hwaddr[3], hwaddr[4], hwaddr[5],
- bpfName, bpfLength);
- return fd;
-}
-
-#endif /* USE_BPF */
-
-#ifdef USE_LINUX_PACKET
/**********************************************************************
*%FUNCTION: openInterface
*%ARGUMENTS:
if ((fd = socket(domain, stype, htons(type))) < 0) {
/* Give a more helpful message for the common error case */
if (errno == EPERM) {
- rp_fatal("Cannot create raw socket -- pppoe must be run as root.");
+ fatal("Cannot create raw socket -- pppoe must be run as root.");
}
- fatalSys("socket");
+ error("Can't open socket for pppoe: %m");
+ return -1;
}
if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &optval, sizeof(optval)) < 0) {
- fatalSys("setsockopt");
+ error("Can't set socket options for pppoe: %m");
+ close(fd);
+ return -1;
}
/* Fill in hardware address */
if (hwaddr) {
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
- fatalSys("ioctl(SIOCGIFHWADDR)");
+ error("Can't get hardware address for %s: %m", ifname);
+ close(fd);
+ return -1;
}
memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
#ifdef ARPHRD_ETHER
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
- char buffer[256];
- sprintf(buffer, "Interface %.16s is not Ethernet", ifname);
- rp_fatal(buffer);
+ warn("Interface %.16s is not Ethernet", ifname);
}
#endif
if (NOT_UNICAST(hwaddr)) {
- char buffer[256];
- sprintf(buffer,
- "Interface %.16s has broadcast/multicast MAC address??",
- ifname);
- rp_fatal(buffer);
+ fatal("Can't use interface %.16s: it has broadcast/multicast MAC address",
+ ifname);
}
}
/* Sanity check on MTU */
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(fd, SIOCGIFMTU, &ifr) < 0) {
- fatalSys("ioctl(SIOCGIFMTU)");
- }
- if (ifr.ifr_mtu < ETH_DATA_LEN) {
- char buffer[256];
- sprintf(buffer, "Interface %.16s has MTU of %d -- should be %d. You may have serious connection problems.",
- ifname, ifr.ifr_mtu, ETH_DATA_LEN);
- printErr(buffer);
+ error("Can't get MTU for %s: %m", ifname);
+ } else if (ifr.ifr_mtu < ETH_DATA_LEN) {
+ error("Interface %.16s has MTU of %d -- should be at least %d.",
+ ifname, ifr.ifr_mtu, ETH_DATA_LEN);
+ error("This may cause serious connection problems.");
}
#ifdef HAVE_STRUCT_SOCKADDR_LL
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
- fatalSys("ioctl(SIOCFIGINDEX): Could not get interface index");
+ error("Could not get interface index for %s: %m", ifname);
+ close(fd);
+ return -1;
}
sa.sll_ifindex = ifr.ifr_ifindex;
/* We're only interested in packets on specified interface */
if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
- fatalSys("bind");
+ error("Failed to bind to interface %s: %m", ifname);
+ close(fd);
+ return -1;
}
return fd;
}
-#endif /* USE_LINUX */
/***********************************************************************
*%FUNCTION: sendPacket
int
sendPacket(PPPoEConnection *conn, int sock, PPPoEPacket *pkt, int size)
{
-#if defined(USE_BPF)
- if (write(sock, pkt, size) < 0) {
- sysErr("write (sendPacket)");
- return -1;
- }
-#elif defined(HAVE_STRUCT_SOCKADDR_LL)
- if (send(sock, pkt, size, 0) < 0) {
- sysErr("send (sendPacket)");
- return -1;
- }
-#else
-#ifdef USE_DLPI
-
-#define ABS(x) ((x) < 0 ? -(x) : (x))
-
- u_char addr[MAXDLADDR];
- u_char phys[MAXDLADDR];
- u_char sap[MAXDLADDR];
- u_char xmitbuf[MAXDLBUF];
- int data_size;
-
- short tmp_sap;
-
- tmp_sap = htons(pkt->ethHdr.h_proto);
- data_size = size - sizeof(struct ethhdr);
-
- memcpy((char *)phys, (char *)pkt->ethHdr.h_dest, ETHERADDRL);
- memcpy((char *)sap, (char *)&tmp_sap, sizeof(ushort_t));
- memcpy((char *)xmitbuf, (char *)pkt + sizeof(struct ethhdr), data_size);
-
- if (dl_saplen > 0) { /* order is sap+phys */
- (void) memcpy((char*)addr, (char*)&sap, dl_abssaplen);
- (void) memcpy((char*)addr+dl_abssaplen, (char*)phys, ETHERADDRL);
- } else { /* order is phys+sap */
- (void) memcpy((char*)addr, (char*)phys, ETHERADDRL);
- (void) memcpy((char*)addr+ETHERADDRL, (char*)&sap, dl_abssaplen);
- }
-
-#ifdef DL_DEBUG
- printf("%02x:%02x:%02x:%02x:%02x:%02x %02x:%02x\n",
- addr[0],addr[1],addr[2],addr[3],addr[4],addr[5],
- addr[6],addr[7]);
-#endif
-
- dlunitdatareq(sock, addr, dl_addrlen, 0, 0, xmitbuf, data_size);
-
-
+ int err;
+ if (debug)
+ pppoe_log_packet("Send ", pkt);
+#if defined(HAVE_STRUCT_SOCKADDR_LL)
+ err = send(sock, pkt, size, 0);
#else
struct sockaddr sa;
- if (!conn) {
- rp_fatal("relay and server not supported on Linux 2.0 kernels");
- }
strcpy(sa.sa_data, conn->ifName);
- if (sendto(sock, pkt, size, 0, &sa, sizeof(sa)) < 0) {
- sysErr("sendto (sendPacket)");
+ err = sendto(sock, pkt, size, 0, &sa, sizeof(sa));
+#endif
+ if (err < 0) {
+ error("error sending pppoe packet: %m");
return -1;
}
-#endif
-#endif
return 0;
}
-#ifdef USE_BPF
-/***********************************************************************
-*%FUNCTION: clearPacketHeader
-*%ARGUMENTS:
-* pkt -- packet that needs its head clearing
-*%RETURNS:
-* nothing
-*%DESCRIPTION:
-* Clears a PPPoE packet header after a truncated packet has been
-* received. Insures that the packet will fail any integrity tests
-* and will be discarded by upper level routines. Also resets the
-* bpfSize and bpfOffset variables to force a new read on the next
-* call to receivePacket().
-***********************************************************************/
-void
-clearPacketHeader(PPPoEPacket *pkt)
-{
- bpfSize = bpfOffset = 0;
- memset(pkt, 0, HDR_SIZE);
-}
-#endif
-
/***********************************************************************
*%FUNCTION: receivePacket
*%ARGUMENTS:
int
receivePacket(int sock, PPPoEPacket *pkt, int *size)
{
-#ifdef USE_BPF
- struct bpf_hdr hdr;
- int seglen, copylen;
-
- if (bpfSize <= 0) {
- bpfOffset = 0;
- if ((bpfSize = read(sock, bpfBuffer, bpfLength)) < 0) {
- sysErr("read (receivePacket)");
- return -1;
- }
- }
- if (bpfSize < sizeof(hdr)) {
- syslog(LOG_ERR, "Truncated bpf packet header: len=%d", bpfSize);
- clearPacketHeader(pkt); /* resets bpfSize and bpfOffset */
- return 0;
- }
- memcpy(&hdr, bpfBuffer + bpfOffset, sizeof(hdr));
- if (hdr.bh_caplen != hdr.bh_datalen) {
- syslog(LOG_ERR, "Truncated bpf packet: caplen=%d, datalen=%d",
- hdr.bh_caplen, hdr.bh_datalen);
- clearPacketHeader(pkt); /* resets bpfSize and bpfOffset */
- return 0;
- }
- seglen = hdr.bh_hdrlen + hdr.bh_caplen;
- if (seglen > bpfSize) {
- syslog(LOG_ERR, "Truncated bpf packet: seglen=%d, bpfSize=%d",
- seglen, bpfSize);
- clearPacketHeader(pkt); /* resets bpfSize and bpfOffset */
- return 0;
- }
- seglen = BPF_WORDALIGN(seglen);
- *size = copylen = ((hdr.bh_caplen < sizeof(PPPoEPacket)) ?
- hdr.bh_caplen : sizeof(PPPoEPacket));
- memcpy(pkt, bpfBuffer + bpfOffset + hdr.bh_hdrlen, copylen);
- if (seglen >= bpfSize) {
- bpfSize = bpfOffset = 0;
- } else {
- bpfSize -= seglen;
- bpfOffset += seglen;
- }
-#else
-#ifdef USE_DLPI
- struct strbuf data;
- int flags = 0;
- int retval;
-
- data.buf = (char *) pkt;
- data.maxlen = MAXDLBUF;
- data.len = 0;
-
- if ((retval = getmsg(sock, NULL, &data, &flags)) < 0) {
- sysErr("read (receivePacket)");
- return -1;
- }
-
- *size = data.len;
-
-#else
if ((*size = recv(sock, pkt, sizeof(PPPoEPacket), 0)) < 0) {
- sysErr("recv (receivePacket)");
+ error("error receiving pppoe packet: %m");
return -1;
}
-#endif
-#endif
+ if (debug)
+ pppoe_log_packet("Recv ", pkt);
return 0;
}
-
-#ifdef USE_DLPI
-/**********************************************************************
-*%FUNCTION: openInterface
-*%ARGUMENTS:
-* ifname -- name of interface
-* type -- Ethernet frame type
-* hwaddr -- if non-NULL, set to the hardware address
-*%RETURNS:
-* A raw socket for talking to the Ethernet card. Exits on error.
-*%DESCRIPTION:
-* Opens a raw Ethernet socket
-***********************************************************************/
-int
-openInterface(char const *ifname, UINT16_t type, unsigned char *hwaddr)
-{
- int fd;
- long buf[MAXDLBUF];
-
- union DL_primitives *dlp;
-
- char base_dev[PATH_MAX];
- int ppa;
-
- if(strlen(ifname) > PATH_MAX) {
- rp_fatal("socket: string to long");
- }
-
- ppa = atoi(&ifname[strlen(ifname)-1]);
- strncpy(base_dev, ifname, PATH_MAX);
- base_dev[strlen(base_dev)-1] = '\0';
-
-/* rearranged order of DLPI code - delphys 20010803 */
- dlp = (union DL_primitives*) buf;
-
- if (( fd = open(base_dev, O_RDWR)) < 0) {
- /* Give a more helpful message for the common error case */
- if (errno == EPERM) {
- rp_fatal("Cannot create raw socket -- pppoe must be run as root.");
- }
- fatalSys("socket");
- }
-
-/* rearranged order of DLPI code - delphys 20010803 */
- dlattachreq(fd, ppa);
- dlokack(fd, (char *)buf);
-
- dlbindreq(fd, type, 0, DL_CLDLS, 0, 0);
- dlbindack(fd, (char *)buf);
-
- dlinforeq(fd);
- dlinfoack(fd, (char *)buf);
-
- dl_abssaplen = ABS(dlp->info_ack.dl_sap_length);
- dl_saplen = dlp->info_ack.dl_sap_length;
- if (ETHERADDRL != (dlp->info_ack.dl_addr_length - dl_abssaplen))
- fatalSys("invalid destination physical address length");
- dl_addrlen = dl_abssaplen + ETHERADDRL;
-
-/* ethernet address retrieved as part of DL_INFO_ACK - delphys 20010803 */
- memcpy(hwaddr, (u_char*)((char*)(dlp) + (int)(dlp->info_ack.dl_addr_offset)), ETHERADDRL);
-
- if ( strioctl(fd, DLIOCRAW, -1, 0, NULL) < 0 ) {
- fatalSys("DLIOCRAW");
- }
-
- if (ioctl(fd, I_FLUSH, FLUSHR) < 0) fatalSys("I_FLUSH");
-
- return fd;
-}
-
-/* cloned from dlcommon.c */
-
-void dlpromisconreq(int fd, u_long level)
-{
- dl_promiscon_req_t promiscon_req;
- struct strbuf ctl;
- int flags;
-
- promiscon_req.dl_primitive = DL_PROMISCON_REQ;
- promiscon_req.dl_level = level;
-
- ctl.maxlen = 0;
- ctl.len = sizeof (promiscon_req);
- ctl.buf = (char *) &promiscon_req;
-
- flags = 0;
-
- if (putmsg(fd, &ctl, (struct strbuf*) NULL, flags) < 0)
- fatalSys("dlpromiscon: putmsg");
-
-}
-
-void dlinforeq(int fd)
-{
- dl_info_req_t info_req;
- struct strbuf ctl;
- int flags;
-
- info_req.dl_primitive = DL_INFO_REQ;
-
- ctl.maxlen = 0;
- ctl.len = sizeof (info_req);
- ctl.buf = (char *) &info_req;
-
- flags = RS_HIPRI;
-
- if (putmsg(fd, &ctl, (struct strbuf*) NULL, flags) < 0)
- fatalSys("dlinforeq: putmsg");
-}
-
-void dlunitdatareq(int fd, u_char *addrp, int addrlen, u_long minpri, u_long maxpri, u_char *datap, int datalen)
-{
- long buf[MAXDLBUF];
- union DL_primitives *dlp;
- struct strbuf data, ctl;
-
- dlp = (union DL_primitives*) buf;
-
- dlp->unitdata_req.dl_primitive = DL_UNITDATA_REQ;
- dlp->unitdata_req.dl_dest_addr_length = addrlen;
- dlp->unitdata_req.dl_dest_addr_offset = sizeof (dl_unitdata_req_t);
- dlp->unitdata_req.dl_priority.dl_min = minpri;
- dlp->unitdata_req.dl_priority.dl_max = maxpri;
-
- (void) memcpy(OFFADDR(dlp, sizeof (dl_unitdata_req_t)), addrp, addrlen);
-
- ctl.maxlen = 0;
- ctl.len = sizeof (dl_unitdata_req_t) + addrlen;
- ctl.buf = (char *) buf;
-
- data.maxlen = 0;
- data.len = datalen;
- data.buf = (char *) datap;
-
- if (putmsg(fd, &ctl, &data, 0) < 0)
- fatalSys("dlunitdatareq: putmsg");
-}
-
-void dlinfoack(int fd, char *bufp)
-{
- union DL_primitives *dlp;
- struct strbuf ctl;
- int flags;
-
- ctl.maxlen = MAXDLBUF;
- ctl.len = 0;
- ctl.buf = bufp;
-
- strgetmsg(fd, &ctl, (struct strbuf*)NULL, &flags, "dlinfoack");
-
- dlp = (union DL_primitives *) ctl.buf;
-
- expecting(DL_INFO_ACK, dlp);
-
- if (ctl.len < sizeof (dl_info_ack_t)) {
- char buffer[256];
- sprintf(buffer, "dlinfoack: response ctl.len too short: %d", ctl.len);
- rp_fatal(buffer);
- }
-
- if (flags != RS_HIPRI)
- rp_fatal("dlinfoack: DL_INFO_ACK was not M_PCPROTO");
-
- if (ctl.len < sizeof (dl_info_ack_t)) {
- char buffer[256];
- sprintf(buffer, "dlinfoack: short response ctl.len: %d", ctl.len);
- rp_fatal(buffer);
- }
-}
-
-void dlbindreq(int fd, u_long sap, u_long max_conind, u_long service_mode, u_long conn_mgmt, u_long xidtest)
-{
- dl_bind_req_t bind_req;
- struct strbuf ctl;
- int flags;
-
- bind_req.dl_primitive = DL_BIND_REQ;
- bind_req.dl_sap = sap;
- bind_req.dl_max_conind = max_conind;
- bind_req.dl_service_mode = service_mode;
- bind_req.dl_conn_mgmt = conn_mgmt;
- bind_req.dl_xidtest_flg = xidtest;
-
- ctl.maxlen = 0;
- ctl.len = sizeof (bind_req);
- ctl.buf = (char *) &bind_req;
-
- flags = 0;
-
- if (putmsg(fd, &ctl, (struct strbuf*) NULL, flags) < 0)
- fatalSys("dlbindreq: putmsg");
-}
-
-void dlattachreq(int fd, u_long ppa)
-{
- dl_attach_req_t attach_req;
- struct strbuf ctl;
- int flags;
-
- attach_req.dl_primitive = DL_ATTACH_REQ;
- attach_req.dl_ppa = ppa;
-
- ctl.maxlen = 0;
- ctl.len = sizeof (attach_req);
- ctl.buf = (char *) &attach_req;
-
- flags = 0;
-
- if (putmsg(fd, &ctl, (struct strbuf*) NULL, flags) < 0)
- fatalSys("dlattachreq: putmsg");
-}
-
-void dlokack(int fd, char *bufp)
-{
- union DL_primitives *dlp;
- struct strbuf ctl;
- int flags;
-
- ctl.maxlen = MAXDLBUF;
- ctl.len = 0;
- ctl.buf = bufp;
-
- strgetmsg(fd, &ctl, (struct strbuf*)NULL, &flags, "dlokack");
-
- dlp = (union DL_primitives *) ctl.buf;
-
- expecting(DL_OK_ACK, dlp);
-
- if (ctl.len < sizeof (dl_ok_ack_t)) {
- char buffer[256];
- sprintf(buffer, "dlokack: response ctl.len too short: %d", ctl.len);
- rp_fatal(buffer);
- }
-
- if (flags != RS_HIPRI)
- rp_fatal("dlokack: DL_OK_ACK was not M_PCPROTO");
-
- if (ctl.len < sizeof (dl_ok_ack_t)) {
- char buffer[256];
- sprintf(buffer, "dlokack: short response ctl.len: %d", ctl.len);
- rp_fatal(buffer);
- }
-}
-
-void dlbindack(int fd, char *bufp)
-{
- union DL_primitives *dlp;
- struct strbuf ctl;
- int flags;
-
- ctl.maxlen = MAXDLBUF;
- ctl.len = 0;
- ctl.buf = bufp;
-
- strgetmsg(fd, &ctl, (struct strbuf*)NULL, &flags, "dlbindack");
-
- dlp = (union DL_primitives *) ctl.buf;
-
- expecting(DL_BIND_ACK, dlp);
-
- if (flags != RS_HIPRI)
- rp_fatal("dlbindack: DL_OK_ACK was not M_PCPROTO");
-
- if (ctl.len < sizeof (dl_bind_ack_t)) {
- char buffer[256];
- sprintf(buffer, "dlbindack: short response ctl.len: %d", ctl.len);
- rp_fatal(buffer);
- }
-}
-
-int strioctl(int fd, int cmd, int timout, int len, char *dp)
-{
- struct strioctl sioc;
- int rc;
-
- sioc.ic_cmd = cmd;
- sioc.ic_timout = timout;
- sioc.ic_len = len;
- sioc.ic_dp = dp;
- rc = ioctl(fd, I_STR, &sioc);
-
- if (rc < 0)
- return (rc);
- else
- return (sioc.ic_len);
-}
-
-void strgetmsg(int fd, struct strbuf *ctlp, struct strbuf *datap, int *flagsp, char *caller)
-{
- int rc;
- static char errmsg[80];
-
- /*
- * Start timer.
- */
- (void) signal(SIGALRM, sigalrm);
- if (alarm(MAXWAIT) < 0) {
- (void) sprintf(errmsg, "%s: alarm", caller);
- fatalSys(errmsg);
- }
-
- /*
- * Set flags argument and issue getmsg().
- */
- *flagsp = 0;
- if ((rc = getmsg(fd, ctlp, datap, flagsp)) < 0) {
- (void) sprintf(errmsg, "%s: getmsg", caller);
- fatalSys(errmsg);
- }
-
- /*
- * Stop timer.
- */
- if (alarm(0) < 0) {
- (void) sprintf(errmsg, "%s: alarm", caller);
- fatalSys(errmsg);
- }
-
- /*
- * Check for MOREDATA and/or MORECTL.
- */
- if ((rc & (MORECTL | MOREDATA)) == (MORECTL | MOREDATA)) {
- char buffer[256];
- sprintf(buffer, "%s: MORECTL|MOREDATA", caller);
- rp_fatal(buffer);
- }
-
- if (rc & MORECTL) {
- char buffer[256];
- sprintf(buffer, "%s: MORECTL", caller);
- rp_fatal(buffer);
- }
-
- if (rc & MOREDATA) {
- char buffer[256];
- sprintf(buffer, "%s: MOREDATA", caller);
- rp_fatal(buffer);
- }
-
- /*
- * Check for at least sizeof (long) control data portion.
- */
- if (ctlp->len < sizeof (long)) {
- char buffer[256];
- sprintf(buffer, "getmsg: control portion length < sizeof (long): %d", ctlp->len);
- rp_fatal(buffer);
- }
-}
-
-void sigalrm(int sig)
-{
- (void) rp_fatal("sigalrm: TIMEOUT");
-}
-
-void expecting(int prim, union DL_primitives *dlp)
-{
- if (dlp->dl_primitive != (u_long)prim) {
- char buffer[256];
- sprintf(buffer, "expected %s got %s", dlprim(prim), dlprim(dlp->dl_primitive));
- rp_fatal(buffer);
- exit(1);
- }
-}
-
-char *dlprim(u_long prim)
-{
- static char primbuf[80];
-
- switch ((int)prim) {
- CASERET(DL_INFO_REQ);
- CASERET(DL_INFO_ACK);
- CASERET(DL_ATTACH_REQ);
- CASERET(DL_DETACH_REQ);
- CASERET(DL_BIND_REQ);
- CASERET(DL_BIND_ACK);
- CASERET(DL_UNBIND_REQ);
- CASERET(DL_OK_ACK);
- CASERET(DL_ERROR_ACK);
- CASERET(DL_SUBS_BIND_REQ);
- CASERET(DL_SUBS_BIND_ACK);
- CASERET(DL_UNITDATA_REQ);
- CASERET(DL_UNITDATA_IND);
- CASERET(DL_UDERROR_IND);
- CASERET(DL_UDQOS_REQ);
- CASERET(DL_CONNECT_REQ);
- CASERET(DL_CONNECT_IND);
- CASERET(DL_CONNECT_RES);
- CASERET(DL_CONNECT_CON);
- CASERET(DL_TOKEN_REQ);
- CASERET(DL_TOKEN_ACK);
- CASERET(DL_DISCONNECT_REQ);
- CASERET(DL_DISCONNECT_IND);
- CASERET(DL_RESET_REQ);
- CASERET(DL_RESET_IND);
- CASERET(DL_RESET_RES);
- CASERET(DL_RESET_CON);
- default:
- (void) sprintf(primbuf, "unknown primitive 0x%lx", prim);
- return (primbuf);
- }
-}
-
-#endif /* USE_DLPI */
projects / ppp.git / blobdiff