diff options
Diffstat (limited to 'c/src/libnetworking/pppd/rtems-ppp.c')
| -rw-r--r-- | c/src/libnetworking/pppd/rtems-ppp.c | 1522 |
1 files changed, 1522 insertions, 0 deletions
diff --git a/c/src/libnetworking/pppd/rtems-ppp.c b/c/src/libnetworking/pppd/rtems-ppp.c new file mode 100644 index 0000000000..4bc8f925b2 --- /dev/null +++ b/c/src/libnetworking/pppd/rtems-ppp.c @@ -0,0 +1,1522 @@ +/* + * sys-bsd.c - System-dependent procedures for setting up + * PPP interfaces on bsd-4.4-ish systems (including 386BSD, NetBSD, RTEMS, etc.) + * + * Copyright (c) 1989 Carnegie Mellon University. + * Copyright (c) 1995 The Australian National University. + * All rights reserved. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by Carnegie Mellon University and The Australian National University. + * The names of the Universities may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +/* static char rcsid[] = "$Id$"; */ +/* $NetBSD: sys-bsd.c,v 1.1.1.3 1997/09/26 18:53:04 christos Exp $ */ +#endif + +/* + * TODO: + */ + +#include <stdio.h> +#include <syslog.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <fcntl.h> +#include <termios.h> +#include <signal.h> +#include <sys/ioctl.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <sys/param.h> +#ifdef NetBSD1_2 +#include <util.h> +#endif +#ifdef PPP_FILTER +#include <net/bpf.h> +#endif + +#include <net/if.h> +#include <net/ppp_defs.h> +#include <net/if_ppp.h> +#include <net/route.h> +#include <net/if_dl.h> +#include <netinet/in.h> + +#if RTM_VERSION >= 3 +#include <sys/param.h> +#if defined(NetBSD) && (NetBSD >= 199703) +#include <netinet/if_inarp.h> +#else /* NetBSD 1.2D or later */ +#include <netinet/if_ether.h> +#endif +#endif + +#include "pppd.h" +#include "fsm.h" +#include "ipcp.h" + +static int initdisc = -1; /* Initial TTY discipline for ppp_fd */ +static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */ +static int ppp_fd = -1; /* fd which is set to PPP discipline */ +static int rtm_seq; + +static int restore_term; /* 1 => we've munged the terminal */ +static struct termios inittermios; /* Initial TTY termios */ +static struct winsize wsinfo; /* Initial window size info */ + +#if 0 +static char *lock_file; /* name of lock file created */ +#endif + +static int loop_slave = -1; +static int loop_master; +#if 0 +static char loop_name[20]; +#endif + +static unsigned char inbuf[512]; /* buffer for chars read from loopback */ + +static int sockfd; /* socket for doing interface ioctls */ + +static int if_is_up; /* the interface is currently up */ +static u_int32_t ifaddrs[2]; /* local and remote addresses we set */ +static u_int32_t default_route_gateway; /* gateway addr for default route */ +static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */ + +/* Prototypes for procedures local to this file. */ +static int dodefaultroute __P((u_int32_t, int)); +static int get_ether_addr __P((u_int32_t, struct sockaddr_dl *)); + + +/* + * sys_init - System-dependent initialization. + */ +void +sys_init() +{ + /* Get an internet socket for doing socket ioctl's on. */ + if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + syslog(LOG_ERR, "Couldn't create IP socket: %m"); + die(1); + } +} + +/* + * sys_cleanup - restore any system state we modified before exiting: + * mark the interface down, delete default route and/or proxy arp entry. + * This should call die() because it's called from die(). + */ +void +sys_cleanup() +{ + struct ifreq ifr; + + if (if_is_up) { + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0 + && ((ifr.ifr_flags & IFF_UP) != 0)) { + ifr.ifr_flags &= ~IFF_UP; + ioctl(sockfd, SIOCSIFFLAGS, &ifr); + } + } + if (ifaddrs[0] != 0) + cifaddr(0, ifaddrs[0], ifaddrs[1]); + if (default_route_gateway) + cifdefaultroute(0, 0, default_route_gateway); + if (proxy_arp_addr) + cifproxyarp(0, proxy_arp_addr); +} + +/* + * sys_close - Clean up in a child process before execing. + */ +void +sys_close() +{ + close(sockfd); + if (loop_slave >= 0) { + close(loop_slave); + close(loop_master); + } +} + +/* + * sys_check_options - check the options that the user specified + */ +void +sys_check_options() +{ +} + +/* + * ppp_available - check whether the system has any ppp interfaces + * (in fact we check whether we can do an ioctl on ppp0). + */ +int +ppp_available() +{ + int s, ok; + struct ifreq ifr; + extern char *no_ppp_msg; + + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) + return 1; /* can't tell */ + + strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); + ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; + close(s); + + no_ppp_msg = "\ +This system lacks kernel support for PPP. To include PPP support\n\ +in the kernel, please follow the steps detailed in the README.bsd\n\ +file in the ppp-2.2 distribution.\n"; + return ok; +} + +/* + * establish_ppp - Turn the serial port into a ppp interface. + */ +void +establish_ppp(fd) + int fd; +{ + int pppdisc = PPPDISC; + int x; + + if (demand) { + /* + * Demand mode - prime the old ppp device to relinquish the unit. + */ + if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) { + syslog(LOG_ERR, "ioctl(transfer ppp unit): %m"); + die(1); + } + } + + /* + * Save the old line discipline of fd, and set it to PPP. + */ + if (ioctl(fd, TIOCGETD, &initdisc) < 0) { + syslog(LOG_ERR, "ioctl(TIOCGETD): %m"); + die(1); + } + if (ioctl(fd, TIOCSETD, &pppdisc) < 0) { + syslog(LOG_ERR, "ioctl(TIOCSETD): %m"); + die(1); + } + + if (!demand) { + /* + * Find out which interface we were given. + */ + if (ioctl(fd, PPPIOCGUNIT, &interfunit) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m"); + die(1); + } + } else { + /* + * Check that we got the same unit again. + */ + + if (ioctl(fd, PPPIOCGUNIT, &x) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m"); + die(1); + } + if (x != interfunit) { + syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d", + interfunit, x); + die(1); + } + x = TTYDISC; + ioctl(loop_slave, TIOCSETD, &x); + } + + ppp_fd = fd; + + /* + * Enable debug in the driver if requested. + */ + if (kdebugflag) { + if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m"); + } else { + x |= (kdebugflag & 0xFF) * SC_DEBUG; + if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) + syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m") +; + } + } + + /* + * Set device for non-blocking reads. + */ +#define fcntl(a) + + +/* if ((initfdflags = fcntl(fd, F_GETFL)) == -1 + || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) { +*/ +/* syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m"); +*/ /*}*/ +} + +/* + * restore_loop - reattach the ppp unit to the loopback. + */ +void +restore_loop() +{ + int x; + + /* + * Transfer the ppp interface back to the loopback. + */ + if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) { + syslog(LOG_ERR, "ioctl(transfer ppp unit): %m"); + die(1); + } + x = PPPDISC; + if (ioctl(loop_slave, TIOCSETD, &x) < 0) { + syslog(LOG_ERR, "ioctl(TIOCSETD): %m"); + die(1); + } + + /* + * Check that we got the same unit again. + */ + if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m"); + die(1); + } + if (x != interfunit) { + syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d", + interfunit, x); + die(1); + } + ppp_fd = loop_slave; +} + + +/* + * disestablish_ppp - Restore the serial port to normal operation. + * This shouldn't call die() because it's called from die(). + */ +void +disestablish_ppp(fd) + int fd; +{ + /* Reset non-blocking mode on fd. */ +/* if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)*/ +/* syslog(LOG_WARNING, "Couldn't restore device fd flags: %m"); +*/ initfdflags = -1; + + /* Restore old line discipline. */ + if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0) +/* syslog(LOG_ERR, "ioctl(TIOCSETD): %m"); +*/ initdisc = -1; + + if (fd == ppp_fd) + ppp_fd = -1; +} + +/* + * Check whether the link seems not to be 8-bit clean. + */ +void +clean_check() +{ + int x; + char *s; + + if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) { + s = NULL; + switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) { + case SC_RCV_B7_0: + s = "bit 7 set to 1"; + break; + case SC_RCV_B7_1: + s = "bit 7 set to 0"; + break; + case SC_RCV_EVNP: + s = "odd parity"; + break; + case SC_RCV_ODDP: + s = "even parity"; + break; + } +/* if (s != NULL) { + syslog(LOG_WARNING, "Serial link is not 8-bit clean:"); + syslog(LOG_WARNING, "All received characters had %s", s); + } +*/ } +} + +/* + * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, + * at the requested speed, etc. If `local' is true, set CLOCAL + * regardless of whether the modem option was specified. + * + * For *BSD, we assume that speed_t values numerically equal bits/second. + */ +void +set_up_tty(fd, local) + int fd, local; +{ + struct termios tios; + + if (tcgetattr(fd, &tios) < 0) { + syslog(LOG_ERR, "tcgetattr: %m"); + die(1); + } + + if (!restore_term) { + inittermios = tios; + ioctl(fd, TIOCGWINSZ, &wsinfo); + } + + tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); + if (crtscts > 0 && !local) + tios.c_cflag |= CRTSCTS; + else if (crtscts < 0) + tios.c_cflag &= ~CRTSCTS; + + tios.c_cflag |= CS8 | CREAD | HUPCL; + if (local || !modem) + tios.c_cflag |= CLOCAL; + tios.c_iflag = IGNBRK | IGNPAR; + tios.c_oflag = 0; + tios.c_lflag = 0; + tios.c_cc[VMIN] = 1; + tios.c_cc[VTIME] = 0; + + if (crtscts == -2) { + tios.c_iflag |= IXON | IXOFF; + tios.c_cc[VSTOP] = 0x13; + tios.c_cc[VSTART] = 0x11; + } + + if (inspeed) { + cfsetospeed(&tios, inspeed); + cfsetispeed(&tios, inspeed); + } else { + inspeed = cfgetospeed(&tios); + /* + * We can't proceed if the serial port speed is 0, + * since that implies that the serial port is disabled. + */ + if (inspeed == 0) { + syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate", + devnam); + die(1); + } + } +/* baud_rate = 9600;*/ +/* na razie wpisujemy na twardo*/ + + if (tcsetattr(fd, TCSANOW, &tios) < 0) { + syslog(LOG_ERR, "tcsetattr: %m"); + die(1); + } + + restore_term = 1; +} + +/* + * restore_tty - restore the terminal to the saved settings. + */ +void +restore_tty(fd) + int fd; +{ +/* if (restore_term) { + if (!default_device) { +*/ /* + * Turn off echoing, because otherwise we can get into + * a loop with the tty and the modem echoing to each other. + * We presume we are the sole user of this tty device, so + * when we close it, it will revert to its defaults anyway. + */ +/* inittermios.c_lflag &= ~(ECHO | ECHONL); + } + if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) + if (errno != ENXIO) + syslog(LOG_WARNING, "tcsetattr: %m"); + ioctl(fd, TIOCSWINSZ, &wsinfo); + restore_term = 0; + } +*/} + +/* + * - control the DTR line on the serial port. + * This is called from die(), so it shouldn't call die(). + */ +void +setdtr(fd, on) +int fd, on; +{ + int modembits = TIOCM_DTR; + + ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); +} + + +/* + * open_ppp_loopback - open the device we use for getting + * packets in demand mode, and connect it to a ppp interface. + * Here we use a pty. + */ +void +open_ppp_loopback() +{ + +} + + +/* + * output - Output PPP packet. + */ +void +output(unit, p, len) + int unit; + u_char *p; + int len; +{ + if (debug); + syslog(LOG_DEBUG, "sent %d bytes ", len ); + + if (write(ttyfd, p, len) < 0) { +/* if (errno != EIO) + syslog(LOG_ERR, "write: %m"); +*/ } +} + +extern int rtems_bsdnet_microseconds_per_tick; +#include <rtems/rtems_bsdnet_internal.h> +#include <rtems/rtems/event.h> +/* + * wait_input - wait until there is data available on ttyfd, + * for the length of time specified by *timo (indefinite + * if timo is NULL). + */ + +/* + * wait_loop_output - wait until there is data available on the + * loopback, for the length of time specified by *timo (indefinite + * if timo is NULL). + */ +void +wait_loop_output(timo) + struct timeval *timo; +{ +/* + fd_set ready; + int n; +*/ + +/* FD_ZERO(&ready); + FD_SET(loop_master, &ready); + n = select(loop_master + 1, &ready, NULL, &ready, timo); + if (n < 0 && errno != EINTR) { +*/ +/* syslog(LOG_ERR, "select: %m");*/ +/* die(1); + } +*/ +} + + +/* + * wait_time - wait for a given length of time or until a + * signal is received. + */ +void +wait_time(timo) + struct timeval *timo; +{ + rtems_status_code status; + rtems_interval ticks; + + ticks = + (timo->tv_sec*1000000+timo->tv_usec)/rtems_bsdnet_microseconds_per_tick; + status = rtems_task_wake_after( ticks ); +} + + +/* + * read_packet - get a PPP packet from the serial device. + */ +int +read_packet(buf) + u_char *buf; +{ + int len; + + if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) { + if (errno == EWOULDBLOCK || errno == EINTR || errno == ETIMEDOUT) + return -1; + syslog(LOG_ERR, "read: %m"); + } + return len; +} + + +/* + * get_loop_output - read characters from the loopback, form them + * into frames, and detect when we want to bring the real link up. + * Return value is 1 if we need to bring up the link, 0 otherwise. + */ +int +get_loop_output() +{ + int rv = 0; + int n; + + while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) { + if (loop_chars(inbuf, n)) + rv = 1; + } + + if (n == 0) { + syslog(LOG_ERR, "eof on loopback"); + die(1); + } else if (errno != EWOULDBLOCK){ + syslog(LOG_ERR, "read from loopback: %m"); + die(1); + } + + return rv; +} + + +/* + * ppp_send_config - configure the transmit characteristics of + * the ppp interface. + */ +void +ppp_send_config(unit, mtu, asyncmap, pcomp, accomp) + int unit, mtu; + u_int32_t asyncmap; + int pcomp, accomp; +{ + u_int x; + struct ifreq ifr; + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + ifr.ifr_mtu = mtu; + if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m"); + quit(); + } + + if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m"); + quit(); + } + + if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m"); + quit(); + } + x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT; + x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC; + if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m"); + quit(); + } +} + + +/* + * ppp_set_xaccm - set the extended transmit ACCM for the interface. + */ +void +ppp_set_xaccm(unit, accm) + int unit; + ext_accm accm; +{ + if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) + /*syslog(LOG_WARNING, "ioctl(set extended ACCM): %m")*/; +} + + +/* + * ppp_recv_config - configure the receive-side characteristics of + * the ppp interface. + */ +void +ppp_recv_config(unit, mru, asyncmap, pcomp, accomp) + int unit, mru; + u_int32_t asyncmap; + int pcomp, accomp; +{ +/* + int x; +*/ + +/* if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m"); + quit(); + } +*/ +/* if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m"); + quit(); + } +*/ +/* if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m"); + quit(); + } +*/ +/* x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC; + if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m"); + quit(); + } +*/ +} + +/* + * ccp_test - ask kernel whether a given compression method + * is acceptable for use. Returns 1 if the method and parameters + * are OK, 0 if the method is known but the parameters are not OK + * (e.g. code size should be reduced), or -1 if the method is unknown. + */ +int +ccp_test(unit, opt_ptr, opt_len, for_transmit) + int unit, opt_len, for_transmit; + u_char *opt_ptr; +{ + struct ppp_option_data data; + + data.ptr = opt_ptr; + data.length = opt_len; + data.transmit = for_transmit; + if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0) + return 1; + return (errno == ENOBUFS)? 0: -1; +} + +/* + * ccp_flags_set - inform kernel about the current state of CCP. + */ +void +ccp_flags_set(unit, isopen, isup) + int unit, isopen, isup; +{ + int x; + + if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { +/* syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m"); +*/ return; + } + x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN; + x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP; + if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) +/* syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m")*/; +} + +/* + * ccp_fatal_error - returns 1 if decompression was disabled as a + * result of an error detected after decompression of a packet, + * 0 otherwise. This is necessary because of patent nonsense. + */ +int +ccp_fatal_error(unit) + int unit; +{ + int x; + + if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { +/* syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");*/ + return 0; + } + return x & SC_DC_FERROR; +} + +/* + * get_idle_time - return how long the link has been idle. + */ +int +get_idle_time(u, ip) + int u; + struct ppp_idle *ip; +{ + return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0; +} + + +#ifdef PPP_FILTER +/* + * set_filters - transfer the pass and active filters to the kernel. + */ +int +set_filters(pass, active) + struct bpf_program *pass, *active; +{ + int ret = 1; + + if (pass->bf_len > 0) { + if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) { + syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m"); + ret = 0; + } + } + if (active->bf_len > 0) { + if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) { + syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m"); + ret = 0; + } + } + return ret; +} +#endif + +/* + * sifvjcomp - config tcp header compression + */ +int +sifvjcomp(u, vjcomp, cidcomp, maxcid) + int u, vjcomp, cidcomp, maxcid; +{ + u_int x; + + if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m"); + return 0; + } + x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP; + x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID; + if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m"); + return 0; + } + if (vjcomp && ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) { + syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m"); + return 0; + } + return 1; +} + +/* + * sifup - Config the interface up and enable IP packets to pass. + */ +int +sifup(u) + int u; +{ + struct ifreq ifr; + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m"); + return 0; + } + ifr.ifr_flags |= IFF_UP; + if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { + syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m"); + return 0; + } + if_is_up = 1; + return 1; +} + +/* + * sifnpmode - Set the mode for handling packets for a given NP. + */ +int +sifnpmode(u, proto, mode) + int u; + int proto; + enum NPmode mode; +{ + struct npioctl npi; + + npi.protocol = proto; + npi.mode = mode; + if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) { +/* syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);*/ + return 0; + } + return 1; +} + +/* + * sifdown - Config the interface down and disable IP. + */ +int +sifdown(u) + int u; +{ + struct ifreq ifr; + int rv; + struct npioctl npi; + + rv = 1; + npi.protocol = PPP_IP; + npi.mode = NPMODE_ERROR; + ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi); + /* ignore errors, because ppp_fd might have been closed by now. */ + + strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); + if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { +/* syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");*/ + rv = 0; + } else { + ifr.ifr_flags &= ~IFF_UP; + if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { +/* syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");*/ + rv = 0; + } else + if_is_up = 0; + } + return rv; +} + +/* + * SET_SA_FAMILY - set the sa_family field of a struct sockaddr, + * if it exists. + */ +#define SET_SA_FAMILY(addr, family) \ + BZERO((char *) &(addr), sizeof(addr)); \ + addr.sa_family = (family); \ + addr.sa_len = sizeof(addr); + +/* + * sifaddr - Config the interface IP addresses and netmask. + */ +int +sifaddr(u, o, h, m) + int u; + u_int32_t o, h, m; +{ + struct ifaliasreq ifra; + struct ifreq ifr; +/* struct sockaddr_in address; + struct sockaddr_in netmask; + struct sockaddr_in broadcast; + + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + memset (&address, '\0', sizeof address); + address.sin_len = sizeof address; + address.sin_family = AF_INET; + address.sin_addr.s_addr = o; + memcpy (&ifr.ifr_addr, &address, sizeof address); + if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifr) < 0) { + if (errno != EADDRNOTAVAIL) + syslog(LOG_WARNING, "Couldn't remove interface address: %m"); + } + + if (ioctl (sockfd, SIOCSIFADDR, &ifr) < 0) + syslog(LOG_ERR, "Can't set address: "); + + + memset (&netmask, '\0', sizeof netmask); + netmask.sin_len = sizeof netmask; + netmask.sin_family = AF_INET; + netmask.sin_addr.s_addr = m ; + memcpy (&ifr.ifr_addr, &netmask, sizeof netmask); + + if (ioctl (sockfd, SIOCSIFNETMASK, &ifr) < 0) + syslog(LOG_ERR,"Can't set netmask: "); + memset (&broadcast, '\0', sizeof broadcast); + broadcast.sin_len = sizeof broadcast; + broadcast.sin_family = AF_INET; + broadcast.sin_addr.s_addr = h; + memcpy (&ifr.ifr_broadaddr, &broadcast, sizeof broadcast); + if (ioctl (sockfd, SIOCSIFBRDADDR, &ifr) < 0) + syslog(LOG_ERR,"Can't set broadcast address: "); + +*/ + strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name)); + SET_SA_FAMILY(ifra.ifra_addr, AF_INET); + ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o; + SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET); + ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h; + if (m != 0) { + SET_SA_FAMILY(ifra.ifra_mask, AF_INET); + ((struct sockaddr_in *) &ifra.ifra_mask)->sin_addr.s_addr = m; + } else + BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask)); + BZERO(&ifr, sizeof(ifr)); + strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + + if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifr) < 0) { +/* if (errno != EADDRNOTAVAIL) + syslog(LOG_WARNING, "Couldn't remove interface address: %m"); +*/ + } + + + + if (ioctl(sockfd, SIOCAIFADDR, (caddr_t) &ifra) < 0) { + if (errno != EEXIST) { + syslog(LOG_ERR, "Couldn't set interface address: %m"); + return 0; + } +/* syslog(LOG_WARNING, + "Couldn't set interface address: Address %s already exists", + ip_ntoa(o)); +*/ } + ifaddrs[0] = o; + ifaddrs[1] = h; + return 1; +} + +/* + * cifaddr - Clear the interface IP addresses, and delete routes + * through the interface if possible. + */ +int +cifaddr(u, o, h) + int u; + u_int32_t o, h; +{ + struct ifaliasreq ifra; + + ifaddrs[0] = 0; + strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name)); + SET_SA_FAMILY(ifra.ifra_addr, AF_INET); + ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o; + SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET); + ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h; + BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask)); + if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifra) < 0) { +/* if (errno != EADDRNOTAVAIL) + syslog(LOG_WARNING, "Couldn't delete interface address: %m"); +*/ return 0; + } + return 1; +} + +/* + * sifdefaultroute - assign a default route through the address given. + */ +int +sifdefaultroute(u, l, g) + int u; + u_int32_t l, g; +{ + return dodefaultroute(g, 's'); +} + +/* + * cifdefaultroute - delete a default route through the address given. + */ +int +cifdefaultroute(u, l, g) + int u; + u_int32_t l, g; +{ + return dodefaultroute(g, 'c'); +} + +/* + * dodefaultroute - talk to a routing socket to add/delete a default route. + */ +static int +dodefaultroute(g, cmd) + u_int32_t g; + int cmd; +{ +/* int routes;*/ + + struct sockaddr_in address; + struct sockaddr_in netmask; + struct sockaddr_in broadcast; + struct sockaddr_in gateway; + +/* struct { + struct rt_msghdr hdr; + struct sockaddr_in dst; + struct sockaddr_in gway; + struct sockaddr_in mask; + } rtmsg; +*/ +/* if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { + syslog(LOG_ERR, "Couldn't %s default route: socket: %m", + cmd=='s'? "add": "delete"); + return 0; + } +*/ + memset((void *) &address, 0, sizeof(address)); + address.sin_len = sizeof address; + address.sin_family = AF_INET; + address.sin_addr.s_addr = INADDR_ANY; + + memset((void *) &netmask, 0, sizeof(netmask)); + netmask.sin_len = sizeof netmask; + netmask.sin_addr.s_addr = INADDR_ANY; + netmask.sin_family = AF_INET; + + + if (cmd=='s') + { + memset((void *) &gateway, 0, sizeof(gateway)); + gateway.sin_len = sizeof gateway; + gateway.sin_family = AF_INET; + gateway.sin_addr.s_addr = htons(g) ; + + + if (rtems_bsdnet_rtrequest (RTM_ADD, + (struct sockaddr *)&address, + (struct sockaddr *)&gateway, + (struct sockaddr *)&netmask, + (RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL) < 0) + /*syslog(LOG_WARNING,"Can't set default route: ")*/ + ; + } + else + { + memset((void *) &gateway, 0, sizeof(gateway)); + gateway.sin_len = sizeof gateway; + gateway.sin_family = AF_INET; + gateway.sin_addr.s_addr = INADDR_ANY; + + if (rtems_bsdnet_rtrequest (RTM_DELETE, + (struct sockaddr *)&address, + (struct sockaddr *)&gateway, + (struct sockaddr *)&netmask, + (RTF_UP | RTF_STATIC), NULL) < 0) + /*syslog(LOG_WARNING,"Can't set default route: ")*/ + ; + } + +/* + rtmsg.hdr.rtm_type = cmd == 's'? RTM_ADD: RTM_DELETE; + rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY; + rtmsg.hdr.rtm_version = RTM_VERSION; + rtmsg.hdr.rtm_seq = ++rtm_seq; + rtmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK; + rtmsg.dst.sin_len = sizeof(rtmsg.dst); + rtmsg.dst.sin_family = AF_INET; + rtmsg.gway.sin_len = sizeof(rtmsg.gway); + rtmsg.gway.sin_family = AF_INET; + rtmsg.gway.sin_addr.s_addr = g; + rtmsg.mask.sin_len = sizeof(rtmsg.dst); + rtmsg.mask.sin_family = AF_INET; + + rtmsg.hdr.rtm_msglen = sizeof(rtmsg); + + + if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) { + syslog(LOG_ERR, "Couldn't %s default route: %m", + cmd=='s'? "add": "delete"); + close(routes); + return 0; + } + + close(routes);*/ + default_route_gateway = (cmd == 's')? g: 0; + return 1; +} + +#if RTM_VERSION >= 3 + +/* + * sifproxyarp - Make a proxy ARP entry for the peer. + */ +static struct { + struct rt_msghdr hdr; + struct sockaddr_inarp dst; + struct sockaddr_dl hwa; + char extra[128]; +} arpmsg; + +static int arpmsg_valid; + +int +sifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + int routes; + return 0; + + + /* + * Get the hardware address of an interface on the same subnet + * as our local address. + */ + memset(&arpmsg, 0, sizeof(arpmsg)); + if (!get_ether_addr(hisaddr, &arpmsg.hwa)) { +/* syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP"); +*/ return 0; + } + + if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { +/* syslog(LOG_ERR, "Couldn't add proxy arp entry: socket: %m"); +*/ return 0; + } + + arpmsg.hdr.rtm_type = RTM_ADD; + arpmsg.hdr.rtm_flags = RTF_ANNOUNCE | RTF_HOST | RTF_STATIC; + arpmsg.hdr.rtm_version = RTM_VERSION; + arpmsg.hdr.rtm_seq = ++rtm_seq; + arpmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY; + arpmsg.hdr.rtm_inits = RTV_EXPIRE; + arpmsg.dst.sin_len = sizeof(struct sockaddr_inarp); + arpmsg.dst.sin_family = AF_INET; + arpmsg.dst.sin_addr.s_addr = hisaddr; + arpmsg.dst.sin_other = SIN_PROXY; + + arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg + + arpmsg.hwa.sdl_len; + if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) { +/* syslog(LOG_ERR, "Couldn't add proxy arp entry: %m"); +*/ close(routes); + return 0; + } + + close(routes); + arpmsg_valid = 1; + proxy_arp_addr = hisaddr; + return 1; +} + +/* + * cifproxyarp - Delete the proxy ARP entry for the peer. + */ +int +cifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + int routes; + + if (!arpmsg_valid) + return 0; + arpmsg_valid = 0; + + arpmsg.hdr.rtm_type = RTM_DELETE; + arpmsg.hdr.rtm_seq = ++rtm_seq; + + if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { + syslog(LOG_ERR, "Couldn't delete proxy arp entry: socket: %m"); + return 0; + } + + if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) { + syslog(LOG_ERR, "Couldn't delete proxy arp entry: %m"); + close(routes); + return 0; + } + + close(routes); + proxy_arp_addr = 0; + return 1; +} + +#else /* RTM_VERSION */ + +/* + * sifproxyarp - Make a proxy ARP entry for the peer. + */ +int +sifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + struct arpreq arpreq; + struct { + struct sockaddr_dl sdl; + char space[128]; + } dls; + + BZERO(&arpreq, sizeof(arpreq)); + + /* + * Get the hardware address of an interface on the same subnet + * as our local address. + */ + if (!get_ether_addr(hisaddr, &dls.sdl)) { + syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP"); + return 0; + } + + arpreq.arp_ha.sa_len = sizeof(struct sockaddr); + arpreq.arp_ha.sa_family = AF_UNSPEC; + BCOPY(LLADDR(&dls.sdl), arpreq.arp_ha.sa_data, dls.sdl.sdl_alen); + SET_SA_FAMILY(arpreq.arp_pa, AF_INET); + ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; + arpreq.arp_flags = ATF_PERM | ATF_PUBL; + if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) { + syslog(LOG_ERR, "Couldn't add proxy arp entry: %m"); + return 0; + } + + proxy_arp_addr = hisaddr; + return 1; +} + +/* + * cifproxyarp - Delete the proxy ARP entry for the peer. + */ +int +cifproxyarp(unit, hisaddr) + int unit; + u_int32_t hisaddr; +{ + struct arpreq arpreq; + + BZERO(&arpreq, sizeof(arpreq)); + SET_SA_FAMILY(arpreq.arp_pa, AF_INET); + ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; + if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) { + syslog(LOG_WARNING, "Couldn't delete proxy arp entry: %m"); + return 0; + } + proxy_arp_addr = 0; + return 1; +} +#endif /* RTM_VERSION */ + + +/* + * get_ether_addr - get the hardware address of an interface on the + * the same subnet as ipaddr. + */ +#define MAX_IFS 32 + +static int +get_ether_addr(ipaddr, hwaddr) + u_int32_t ipaddr; + struct sockaddr_dl *hwaddr; +{ + struct ifreq *ifr, *ifend, *ifp; + u_int32_t ina, mask; + struct sockaddr_dl *dla; + struct ifreq ifreq; + struct ifconf ifc; + struct ifreq ifs[MAX_IFS]; + + ifc.ifc_len = sizeof(ifs); + ifc.ifc_req = ifs; + if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { + syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m"); + return 0; + } + + /* + * Scan through looking for an interface with an Internet + * address on the same subnet as `ipaddr'. + */ + ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); + for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *) + ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) { + if (ifr->ifr_addr.sa_family == AF_INET) { + ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; + strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); + /* + * Check that the interface is up, and not point-to-point + * or loopback. + */ + if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) + continue; + if ((ifreq.ifr_flags & + (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) + != (IFF_UP|IFF_BROADCAST)) + continue; + /* + * Get its netmask and check that it's on the right subnet. + */ + if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) + continue; + mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr; + if ((ipaddr & mask) != (ina & mask)) + continue; + + break; + } + } + + if (ifr >= ifend) + return 0; + syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name); + + /* + * Now scan through again looking for a link-level address + * for this interface. + */ + ifp = ifr; + for (ifr = ifc.ifc_req; ifr < ifend; ) { + if (strcmp(ifp->ifr_name, ifr->ifr_name) == 0 + && ifr->ifr_addr.sa_family == AF_LINK) { + /* + * Found the link-level address - copy it out + */ + dla = (struct sockaddr_dl *) &ifr->ifr_addr; + BCOPY(dla, hwaddr, dla->sdl_len); + return 1; + } + ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len); + } + + return 0; +} + +/* + * Return user specified netmask, modified by any mask we might determine + * for address `addr' (in network byte order). + * Here we scan through the system's list of interfaces, looking for + * any non-point-to-point interfaces which might appear to be on the same + * network as `addr'. If we find any, we OR in their netmask to the + * user-specified netmask. + */ +u_int32_t +GetMask(addr) + u_int32_t addr; +{ + u_int32_t mask, nmask, ina; + struct ifreq *ifr, *ifend, ifreq; + struct ifconf ifc; + struct ifreq ifs[MAX_IFS]; + + addr = ntohl(addr); + if (IN_CLASSA(addr)) /* determine network mask for address class */ + nmask = IN_CLASSA_NET; + else if (IN_CLASSB(addr)) + nmask = IN_CLASSB_NET; + else + nmask = IN_CLASSC_NET; + /* class D nets are disallowed by bad_ip_adrs */ + mask = netmask | htonl(nmask); + + /* + * Scan through the system's network interfaces. + */ + ifc.ifc_len = sizeof(ifs); + ifc.ifc_req = ifs; + if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { + syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m"); + return mask; + } + ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); + for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *) + ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) { + /* + * Check the interface's internet address. + */ + if (ifr->ifr_addr.sa_family != AF_INET) + continue; + ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; + if ((ntohl(ina) & nmask) != (addr & nmask)) + continue; + /* + * Check that the interface is up, and not point-to-point or loopback. + */ + strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); + if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) + continue; + if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) + != IFF_UP) + continue; + /* + * Get its netmask and OR it into our mask. + */ + if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) + continue; + mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr; + } + + return mask; +} + +/* + * Use the hostid as part of the random number seed. + */ +int +get_host_seed() +{ + return 33; +/* return gethostid();*/ +} + +/* + * lock - create a lock file for the named lock device + */ +#define LOCK_PREFIX "/var/spool/lock/LCK.." + +int +lock(dev) + char *dev; +{ +/* char hdb_lock_buffer[12]; + int fd, pid, n; + char *p; + + if ((p = strrchr(dev, '/')) != NULL) + dev = p + 1; + lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1); + if (lock_file == NULL) + novm("lock file name"); + strcat(strcpy(lock_file, LOCK_PREFIX), dev); + + while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { + if (errno == EEXIST + && (fd = open(lock_file, O_RDONLY, 0)) >= 0) { + + n = read(fd, hdb_lock_buffer, 11); + if (n <= 0) { + syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file); + close(fd); + } else { + hdb_lock_buffer[n] = 0; + pid = atoi(hdb_lock_buffer); + if (kill(pid, 0) == -1 && errno == ESRCH) { + + if (unlink(lock_file) == 0) { + close(fd); + syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)", + dev, pid); + continue; + } else + syslog(LOG_WARNING, "Couldn't remove stale lock on %s", + dev); + } else + syslog(LOG_NOTICE, "Device %s is locked by pid %d", + dev, pid); + } + close(fd); + } else + syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file); + free(lock_file); + lock_file = NULL; + return -1; + } + + sprintf(hdb_lock_buffer, "%10d\n", getpid()); + write(fd, hdb_lock_buffer, 11); + + close(fd); +*/ return 0; +} + +/* + * unlock - remove our lockfile + */ +void +unlock() +{ +/* if (lock_file) { + unlink(lock_file); + free(lock_file); + lock_file = NULL; + } +*/} |