X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fsys-svr4.c;h=f82a2163e1d34707fe6a235f327d0d66943a1a81;hp=ce24dc4dac1c84115967333e7cb7061bc7c19434;hb=98516bb41580f3d34d750165e9a65289bc5ad248;hpb=9c1252cd8a1991671d1e546f40a16c0099d5a8c1 diff --git a/pppd/sys-svr4.c b/pppd/sys-svr4.c index ce24dc4..f82a216 100644 --- a/pppd/sys-svr4.c +++ b/pppd/sys-svr4.c @@ -26,16 +26,28 @@ */ #ifndef lint -static char rcsid[] = "$Id: sys-svr4.c,v 1.1 1995/05/19 03:08:27 paulus Exp $"; +static char rcsid[] = "$Id: sys-svr4.c,v 1.15 1997/03/04 03:43:54 paulus Exp $"; #endif +#include #include #include #include +#if defined(SNI) || defined(__USLC__) +extern void *alloca(size_t); +#else +#include +#endif +#include #include #include #include #include +#ifndef CRTSCTS +#include +#endif +#include +#include #include #include #include @@ -43,9 +55,14 @@ static char rcsid[] = "$Id: sys-svr4.c,v 1.1 1995/05/19 03:08:27 paulus Exp $"; #include #include #include +#include #include #include +#include +#include #include +#include +#include #include #include #include @@ -59,6 +76,13 @@ static int ipmuxid = -1; static int restore_term; static struct termios inittermios; +#ifndef CRTSCTS +static struct termiox inittermiox; +#endif +static struct winsize wsinfo; /* Initial window size info */ +static pid_t tty_sid; /* original session ID for terminal */ + +extern u_char inpacket_buf[]; /* borrowed from main.c */ static int link_mtu, link_mru; @@ -66,24 +90,145 @@ static int link_mtu, link_mru; static int tty_nmodules; static char tty_modules[NMODULES][FMNAMESZ+1]; +static int if_is_up; /* Interface has been marked up */ +static u_int32_t default_route_gateway; /* Gateway for default route added */ +static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ + +/* Prototypes for procedures local to this file. */ +static int translate_speed __P((int)); +static int baud_rate_of __P((int)); +static int get_ether_addr __P((u_int32_t, struct sockaddr *)); +static int get_hw_addr __P((char *, struct sockaddr *)); +static int dlpi_attach __P((int, int)); +static int dlpi_info_req __P((int)); +static int dlpi_get_reply __P((int, union DL_primitives *, int, int)); +static int strioctl __P((int, int, void *, int, int)); + + /* * sys_init - System-dependent initialization. */ void sys_init() { - openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP); - setlogmask(LOG_UPTO(LOG_INFO)); - if (debug) - setlogmask(LOG_UPTO(LOG_DEBUG)); + int ifd, x; +#ifndef sun + struct ifreq ifr; + struct { + union DL_primitives prim; + char space[64]; + } reply; +#endif ipfd = open("/dev/ip", O_RDWR, 0); if (ipfd < 0) { syslog(LOG_ERR, "Couldn't open IP device: %m"); die(1); } + + if (default_device) + tty_sid = getsid((pid_t)0); + + pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0); + if (pppfd < 0) { + syslog(LOG_ERR, "Can't open /dev/ppp: %m"); + die(1); + } + if (kdebugflag & 1) { + x = PPPDBG_LOG + PPPDBG_DRIVER; + strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0); + } + + /* Assign a new PPA and get its unit number. */ + if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) { + syslog(LOG_ERR, "Can't create new PPP interface: %m"); + die(1); + } + + /* + * Open the ppp device again and link it under the ip multiplexor. + * IP will assign a unit number which hopefully is the same as ifunit. + * I don't know any way to be certain they will be the same. :-( + */ + ifd = open("/dev/ppp", O_RDWR, 0); + if (ifd < 0) { + syslog(LOG_ERR, "Can't open /dev/ppp (2): %m"); + die(1); + } + if (kdebugflag & 1) { + x = PPPDBG_LOG + PPPDBG_DRIVER; + strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0); + } +#ifdef sun + if (ioctl(ifd, I_PUSH, "ip") < 0) { + syslog(LOG_ERR, "Can't push IP module: %m"); + close(ifd); + die(1); + } +#else + if (dlpi_attach(ifd, ifunit) < 0 || + dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) { + syslog(LOG_ERR, "Can't attach to ppp%d: %m", ifunit); + close(ifd); + die(1); + } +#endif + ipmuxid = ioctl(ipfd, I_LINK, ifd); + close(ifd); + if (ipmuxid < 0) { + syslog(LOG_ERR, "Can't link PPP device to IP: %m"); + die(1); + } + +#ifndef sun + /* Set the interface name for the link. */ + (void) sprintf (ifr.ifr_name, "ppp%d", ifunit); + ifr.ifr_metric = ipmuxid; + if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) { + syslog(LOG_ERR, "Can't set interface name %s: %m", ifr.ifr_name); + die(1); + } +#endif +} + +/* + * 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) + sifdown(0); + if (default_route_gateway) + cifdefaultroute(0, default_route_gateway, 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(ipfd); + if (pppfd >= 0) + close(pppfd); +} + +/* + * sys_check_options - check the options that the user specified + */ +void +sys_check_options() +{ +} + + /* * daemon - Detach us from controlling terminal session. */ @@ -108,49 +253,26 @@ daemon(nochdir, noclose) return 0; } -/* - * note_debug_level - note a change in the debug level. - */ -void -note_debug_level() -{ - if (debug) { - syslog(LOG_INFO, "Debug turned ON, Level %d", debug); - setlogmask(LOG_UPTO(LOG_DEBUG)); - } else { - setlogmask(LOG_UPTO(LOG_WARNING)); - } -} - /* * ppp_available - check whether the system has any ppp interfaces */ int ppp_available() { - return access("/dev/ppp", R_OK) >= 0; + struct stat buf; + + return stat("/dev/ppp", &buf) >= 0; } /* * establish_ppp - Turn the serial port into a ppp interface. */ void -establish_ppp() +establish_ppp(fd) + int fd; { int i; - pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0); - if (pppfd < 0) { - syslog(LOG_ERR, "Can't open /dev/ppp: %m"); - die(1); - } - - /* Assign a new PPA and get its unit number. */ - if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) { - syslog(LOG_ERR, "Can't create new PPP interface: %m"); - die(1); - } - /* Pop any existing modules off the tty stream. */ for (i = 0;; ++i) if (ioctl(fd, I_LOOK, tty_modules[i]) < 0 @@ -163,10 +285,18 @@ establish_ppp() syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m"); die(1); } + if (kdebugflag & 4) { + i = PPPDBG_LOG + PPPDBG_AHDLC; + strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); + } if (ioctl(fd, I_PUSH, "ppp_comp") < 0) { syslog(LOG_ERR, "Couldn't push PPP compression module: %m"); /* die(1); */ } + if (kdebugflag & 2) { + i = PPPDBG_LOG + PPPDBG_COMP; + strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); + } /* Link the serial port under the PPP multiplexor. */ if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) { @@ -175,18 +305,30 @@ establish_ppp() } } +/* + * restore_loop - reattach the ppp unit to the loopback. + * This doesn't need to do anything because disestablish_ppp does it. + */ +void +restore_loop() +{ +} + /* * disestablish_ppp - Restore the serial port to normal operation. - * This shouldn't call die() because it's called from die(). + * It attempts to reconstruct the stream with the previously popped + * modules. This shouldn't call die() because it's called from die(). */ void -disestablish_ppp() +disestablish_ppp(fd) + int fd; { int i; if (fdmuxid >= 0) { if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) { - syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m"); + if (!hungup) + syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m"); } fdmuxid = -1; @@ -198,6 +340,48 @@ disestablish_ppp() syslog(LOG_ERR, "Couldn't restore tty module %s: %m", tty_modules[i]); } + if (hungup && default_device && tty_sid > 0) { + /* + * If we have received a hangup, we need to send a SIGHUP + * to the terminal's controlling process. The reason is + * that the original stream head for the terminal hasn't + * seen the M_HANGUP message (it went up through the ppp + * driver to the stream head for our fd to /dev/ppp). + */ + kill(tty_sid, SIGHUP); + } + } +} + +/* + * Check whether the link seems not to be 8-bit clean. + */ +void +clean_check() +{ + int x; + char *s; + + if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0) + return; + s = NULL; + switch (~x) { + case RCV_B7_0: + s = "bit 7 set to 1"; + break; + case RCV_B7_1: + s = "bit 7 set to 0"; + break; + case RCV_EVNP: + s = "odd parity"; + break; + case 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); } } @@ -279,7 +463,7 @@ struct speed { /* * Translate from bits/second to a speed_t. */ -int +static int translate_speed(bps) int bps; { @@ -297,7 +481,7 @@ translate_speed(bps) /* * Translate from a speed_t to bits/second. */ -int +static int baud_rate_of(speed) int speed; { @@ -316,25 +500,50 @@ baud_rate_of(speed) * at the requested speed, etc. If `local' is true, set CLOCAL * regardless of whether the modem option was specified. */ +void set_up_tty(fd, local) int fd, local; { int speed; struct termios tios; +#if !defined (CRTSCTS) + struct termiox tiox; +#endif if (tcgetattr(fd, &tios) < 0) { syslog(LOG_ERR, "tcgetattr: %m"); die(1); } - if (!restore_term) +#ifndef CRTSCTS + if (ioctl (fd, TCGETX, &tiox) < 0) { + syslog (LOG_ERR, "TCGETX: %m"); + die (1); + } +#endif + + if (!restore_term) { inittermios = tios; +#ifndef CRTSCTS + inittermiox = tiox; +#endif + ioctl(fd, TIOCGWINSZ, &wsinfo); + } tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); +#ifdef CRTSCTS if (crtscts > 0) tios.c_cflag |= CRTSCTS; else if (crtscts < 0) tios.c_cflag &= ~CRTSCTS; +#else + if (crtscts > 0) { + tiox.x_hflag |= RTSXOFF|CTSXON; + } + else if (crtscts < 0) { + tiox.x_hflag &= ~(RTSXOFF|CTSXON); + } +#endif tios.c_cflag |= CS8 | CREAD | HUPCL; if (local || !modem) @@ -345,8 +554,8 @@ set_up_tty(fd, local) tios.c_cc[VMIN] = 1; tios.c_cc[VTIME] = 0; - if (crtscts == 2) { - tios.c_iflag |= IXOFF; + if (crtscts == -2) { + tios.c_iflag |= IXON | IXOFF; tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ } @@ -373,6 +582,13 @@ set_up_tty(fd, local) die(1); } +#ifndef CRTSCTS + if (ioctl (fd, TCSETXF, &tiox) < 0){ + syslog (LOG_ERR, "TCSETXF: %m"); + die (1); + } +#endif + baud_rate = inspeed = baud_rate_of(speed); restore_term = 1; } @@ -381,7 +597,8 @@ set_up_tty(fd, local) * restore_tty - restore the terminal to the saved settings. */ void -restore_tty() +restore_tty(fd) + int fd; { if (restore_term) { if (!default_device) { @@ -394,8 +611,15 @@ restore_tty() inittermios.c_lflag &= ~(ECHO | ECHONL); } if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) - if (errno != ENXIO) + if (!hungup && errno != ENXIO) syslog(LOG_WARNING, "tcsetattr: %m"); +#ifndef CRTSCTS + if (ioctl (fd, TCSETXF, &inittermiox) < 0){ + if (!hungup && errno != ENXIO) + syslog (LOG_ERR, "TCSETXF: %m"); + } +#endif + ioctl(fd, TIOCSWINSZ, &wsinfo); restore_term = 0; } } @@ -404,6 +628,7 @@ restore_tty() * setdtr - 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; { @@ -412,6 +637,16 @@ int fd, on; ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); } +/* + * open_loopback - open the device we use for getting packets + * in demand mode. Under Solaris 2, we use our existing fd + * to the ppp driver. + */ +void +open_ppp_loopback() +{ +} + /* * output - Output PPP packet. */ @@ -422,25 +657,34 @@ output(unit, p, len) int len; { struct strbuf data; + int retries; + struct pollfd pfd; if (debug) log_packet(p, len, "sent "); data.len = len; data.buf = (caddr_t) p; - if (putmsg(pppfd, NULL, &data, 0) < 0) { - if (errno != ENXIO) { - syslog(LOG_ERR, "Couldn't send packet: %m"); - die(1); + retries = 4; + while (putmsg(pppfd, NULL, &data, 0) < 0) { + if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) { + if (errno != ENXIO) + syslog(LOG_ERR, "Couldn't send packet: %m"); + break; } + pfd.fd = pppfd; + pfd.events = POLLOUT; + poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */ } } + /* * wait_input - wait until there is data available on fd, * for the length of time specified by *timo (indefinite * if timo is NULL). */ +void wait_input(timo) struct timeval *timo; { @@ -456,6 +700,36 @@ wait_input(timo) } } +/* + * 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; +{ + wait_input(timo); +} + +/* + * wait_time - wait for a given length of time or until a + * signal is received. + */ +void +wait_time(timo) + struct timeval *timo; +{ + int n; + + n = select(0, NULL, NULL, NULL, timo); + if (n < 0 && errno != EINTR) { + syslog(LOG_ERR, "select: %m"); + die(1); + } +} + + /* * read_packet - get a PPP packet from the serial device. */ @@ -465,29 +739,52 @@ read_packet(buf) { struct strbuf ctrl, data; int flags, len; - unsigned char ctrlbuf[sizeof(union DL_primitives)]; + unsigned char ctrlbuf[sizeof(union DL_primitives) + 64]; + + for (;;) { + data.maxlen = PPP_MRU + PPP_HDRLEN; + data.buf = (caddr_t) buf; + ctrl.maxlen = sizeof(ctrlbuf); + ctrl.buf = (caddr_t) ctrlbuf; + flags = 0; + len = getmsg(pppfd, &ctrl, &data, &flags); + if (len < 0) { + if (errno = EAGAIN || errno == EINTR) + return -1; + syslog(LOG_ERR, "Error reading packet: %m"); + die(1); + } - data.maxlen = PPP_MRU + PPP_HDRLEN; - data.buf = (caddr_t) buf; - ctrl.maxlen = sizeof(ctrlbuf); - ctrl.buf = (caddr_t) ctrlbuf; - flags = 0; - len = getmsg(pppfd, &ctrl, &data, &flags); - if (len < 0) { - if (errno = EAGAIN || errno == EINTR) - return -1; - syslog(LOG_ERR, "Error reading packet: %m"); - die(1); - } + if (ctrl.len <= 0) + return data.len; - if (ctrl.len > 0) { /* * Got a M_PROTO or M_PCPROTO message. Interpret it - * as a DLPI primitive. + * as a DLPI primitive?? */ + if (debug) + syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d", + ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len); + } +} + +/* + * get_loop_output - get outgoing packets from the ppp device, + * 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 len; + int rv = 0; - return data.len; + while ((len = read_packet(inpacket_buf)) > 0) { + if (loop_frame(inpacket_buf, len)) + rv = 1; + } + return rv; } /* @@ -502,18 +799,23 @@ ppp_send_config(unit, mtu, asyncmap, pcomp, accomp) { int cf[2]; + link_mtu = mtu; if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) { + if (hungup && errno == ENXIO) + return; syslog(LOG_ERR, "Couldn't set MTU: %m"); } - if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - syslog(LOG_ERR, "Couldn't set transmit ACCM: %m"); - } - cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0); - cf[1] = COMP_PROT | COMP_AC; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - syslog(LOG_ERR, "Couldn't set prot/AC compression: %m"); + if (fdmuxid >= 0) { + /* can't set these if we don't have a stream attached below /dev/ppp */ + if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { + syslog(LOG_ERR, "Couldn't set transmit ACCM: %m"); + } + cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0); + cf[1] = COMP_PROT | COMP_AC; + if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { + syslog(LOG_ERR, "Couldn't set prot/AC compression: %m"); + } } - link_mtu = mtu; } /* @@ -524,8 +826,10 @@ ppp_set_xaccm(unit, accm) int unit; ext_accm accm; { - if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) { - syslog(LOG_WARNING, "Couldn't set extended ACCM: %m"); + if (fdmuxid >= 0 + && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) { + if (!hungup || errno != ENXIO) + syslog(LOG_WARNING, "Couldn't set extended ACCM: %m"); } } @@ -541,30 +845,38 @@ ppp_recv_config(unit, mru, asyncmap, pcomp, accomp) { int cf[2]; + link_mru = mru; if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) { + if (hungup && errno == ENXIO) + return; syslog(LOG_ERR, "Couldn't set MRU: %m"); } - if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { - syslog(LOG_ERR, "Couldn't set receive ACCM: %m"); - } - cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0); - cf[1] = DECOMP_PROT | DECOMP_AC; - if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m"); + if (fdmuxid >= 0) { + /* can't set these if we don't have a stream attached below /dev/ppp */ + if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { + syslog(LOG_ERR, "Couldn't set receive ACCM: %m"); + } + cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0); + cf[1] = DECOMP_PROT | DECOMP_AC; + if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { + syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m"); + } } - link_mru = mru; } /* * ccp_test - ask kernel whether a given compression method * is acceptable for use. */ +int ccp_test(unit, opt_ptr, opt_len, for_transmit) int unit, opt_len, for_transmit; u_char *opt_ptr; { - return strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP), - opt_ptr, opt_len, 0) >= 0; + if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP), + opt_ptr, opt_len, 0) >= 0) + return 1; + return (errno == ENOSR)? 0: -1; } /* @@ -579,9 +891,49 @@ ccp_flags_set(unit, isopen, isup) cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0); cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR; if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - syslog(LOG_ERR, "Couldn't set kernel CCP state: %m"); + if (!hungup || errno != ENXIO) + syslog(LOG_ERR, "Couldn't set kernel CCP state: %m"); + } +} + +/* + * get_idle_time - return how long the link has been idle. + */ +int +get_idle_time(u, ip) + int u; + struct ppp_idle *ip; +{ + return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0; +} + +#if 0 +/* + * 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 (strioctl(pppfd, PPPIO_PASSFILT, pass, + sizeof(struct bpf_program), 0) < 0) { + syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m"); + ret = 0; + } } + if (active->bf_len > 0) { + if (strioctl(pppfd, PPPIO_ACTIVEFILT, active, + sizeof(struct bpf_program), 0) < 0) { + syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m"); + ret = 0; + } + } + return ret; } +#endif /* * ccp_fatal_error - returns 1 if decompression was disabled as a @@ -596,7 +948,8 @@ ccp_fatal_error(unit) cf[0] = cf[1] = 0; if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { - syslog(LOG_ERR, "Couldn't get compression flags: %m"); + if (errno != ENXIO && errno != EINVAL) + syslog(LOG_ERR, "Couldn't get compression flags: %m"); return 0; } return cf[0] & CCP_FATALERROR; @@ -640,10 +993,6 @@ sifup(u) { struct ifreq ifr; - if (ipmuxid < 0) { - syslog(LOG_DEBUG, "sifup: not plumbed!"); - return 0; - } strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { syslog(LOG_ERR, "Couldn't mark interface up (get): %m"); @@ -654,6 +1003,7 @@ sifup(u) syslog(LOG_ERR, "Couldn't mark interface up (set): %m"); return 0; } + if_is_up = 1; return 1; } @@ -678,9 +1028,32 @@ sifdown(u) syslog(LOG_ERR, "Couldn't mark interface down (set): %m"); return 0; } + if_is_up = 0; 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; +{ + int npi[2]; + + npi[0] = proto; + npi[1] = (int) mode; + if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) { + syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode); + return 0; + } + return 1; +} + +#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr) + /* * sifaddr - Config the interface IP addresses and netmask. */ @@ -689,43 +1062,25 @@ sifaddr(u, o, h, m) int u; u_int32_t o, h, m; { - int fd; struct ifreq ifr; - fd = open("/dev/ppp", O_RDWR, 0); - if (fd < 0) { - syslog(LOG_ERR, "Can't open /dev/ppp (2): %m"); - die(1); - } - if (ioctl(fd, I_PUSH, "ip") < 0) { - syslog(LOG_ERR, "Can't push IP module: %m"); - close(fd); - return 0; - } - ipmuxid = ioctl(ipfd, I_LINK, fd); - close(fd); - if (ipmuxid < 0) { - syslog(LOG_ERR, "Can't link PPP device to IP: %m"); - return 0; - } - memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ifr.ifr_addr.sa_family = AF_INET; - ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o; + INET_ADDR(ifr.ifr_addr) = m; + if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) { + syslog(LOG_ERR, "Couldn't set IP netmask: %m"); + } + ifr.ifr_addr.sa_family = AF_INET; + INET_ADDR(ifr.ifr_addr) = o; if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) { syslog(LOG_ERR, "Couldn't set local IP address: %m"); } ifr.ifr_dstaddr.sa_family = AF_INET; - ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h; + INET_ADDR(ifr.ifr_dstaddr) = h; if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) { syslog(LOG_ERR, "Couldn't set remote IP address: %m"); } - ifr.ifr_addr.sa_family = AF_INET; - ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m; - if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) { - syslog(LOG_ERR, "Couldn't set IP netmask: %m"); - } ifr.ifr_metric = link_mtu; if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) { syslog(LOG_ERR, "Couldn't set IP MTU: %m"); @@ -743,13 +1098,17 @@ cifaddr(u, o, h) int u; u_int32_t o, h; { +#if defined(__USLC__) /* was: #if 0 */ + cifroute(unit, ouraddr, hisaddr); if (ipmuxid >= 0) { + syslog(LOG_NOTICE, "Removing ppp interface unit"); if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) { syslog(LOG_ERR, "Can't remove ppp interface unit: %m"); return 0; } ipmuxid = -1; } +#endif return 1; } @@ -757,10 +1116,28 @@ cifaddr(u, o, h) * sifdefaultroute - assign a default route through the address given. */ int -sifdefaultroute(u, g) +sifdefaultroute(u, l, g) int u; - u_int32_t g; + u_int32_t l, g; { + struct rtentry rt; + +#if defined(__USLC__) + g = l; /* use the local address as gateway */ +#endif + memset(&rt, 0, sizeof(rt)); + rt.rt_dst.sa_family = AF_INET; + INET_ADDR(rt.rt_dst) = 0; + rt.rt_gateway.sa_family = AF_INET; + INET_ADDR(rt.rt_gateway) = g; + rt.rt_flags = RTF_GATEWAY; + + if (ioctl(ipfd, SIOCADDRT, &rt) < 0) { + syslog(LOG_ERR, "Can't add default route: %m"); + return 0; + } + + default_route_gateway = g; return 1; } @@ -768,10 +1145,28 @@ sifdefaultroute(u, g) * cifdefaultroute - delete a default route through the address given. */ int -cifdefaultroute(u, g) +cifdefaultroute(u, l, g) int u; - u_int32_t g; + u_int32_t l, g; { + struct rtentry rt; + +#if defined(__USLC__) + g = l; /* use the local address as gateway */ +#endif + memset(&rt, 0, sizeof(rt)); + rt.rt_dst.sa_family = AF_INET; + INET_ADDR(rt.rt_dst) = 0; + rt.rt_gateway.sa_family = AF_INET; + INET_ADDR(rt.rt_gateway) = g; + rt.rt_flags = RTF_GATEWAY; + + if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { + syslog(LOG_ERR, "Can't delete default route: %m"); + return 0; + } + + default_route_gateway = 0; return 1; } @@ -783,6 +1178,21 @@ sifproxyarp(unit, hisaddr) int unit; u_int32_t hisaddr; { + struct arpreq arpreq; + + memset(&arpreq, 0, sizeof(arpreq)); + if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) + return 0; + + arpreq.arp_pa.sa_family = AF_INET; + INET_ADDR(arpreq.arp_pa) = hisaddr; + arpreq.arp_flags = ATF_PERM | ATF_PUBL; + if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) { + syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m"); + return 0; + } + + proxy_arp_addr = hisaddr; return 1; } @@ -794,6 +1204,17 @@ cifproxyarp(unit, hisaddr) int unit; u_int32_t hisaddr; { + struct arpreq arpreq; + + memset(&arpreq, 0, sizeof(arpreq)); + arpreq.arp_pa.sa_family = AF_INET; + INET_ADDR(arpreq.arp_pa) = hisaddr; + if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) { + syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m"); + return 0; + } + + proxy_arp_addr = 0; return 1; } @@ -803,11 +1224,205 @@ cifproxyarp(unit, hisaddr) */ #define MAX_IFS 32 -int +static int get_ether_addr(ipaddr, hwaddr) u_int32_t ipaddr; - struct sockaddr_dl *hwaddr; + struct sockaddr *hwaddr; { + struct ifreq *ifr, *ifend, ifreq; + int nif; + struct ifconf ifc; + u_int32_t ina, mask; + + /* + * Scan through the system's network interfaces. + */ +#ifdef SIOCGIFNUM + if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) +#endif + nif = MAX_IFS; + ifc.ifc_len = nif * sizeof(struct ifreq); + ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len); + if (ifc.ifc_req == 0) + return 0; + if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { + syslog(LOG_WARNING, "Couldn't get system interface list: %m"); + return 0; + } + ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); + for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { + if (ifr->ifr_addr.sa_family != AF_INET) + 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(ipfd, 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(ipfd, SIOCGIFNETMASK, &ifreq) < 0) + continue; + ina = INET_ADDR(ifr->ifr_addr); + mask = INET_ADDR(ifreq.ifr_addr); + if ((ipaddr & mask) == (ina & mask)) + break; + } + + if (ifr >= ifend) { + syslog(LOG_WARNING, "No suitable interface found for proxy ARP"); + return 0; + } + + syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name); + if (!get_hw_addr(ifr->ifr_name, hwaddr)) { + syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name); + return 0; + } + + return 1; +} + +/* + * get_hw_addr - obtain the hardware address for a named interface. + */ +static int +get_hw_addr(name, hwaddr) + char *name; + struct sockaddr *hwaddr; +{ + char *p, *q; + int unit, iffd, adrlen; + unsigned char *adrp; + char ifdev[24]; + struct { + union DL_primitives prim; + char space[64]; + } reply; + + /* + * We have to open the device and ask it for its hardware address. + * First split apart the device name and unit. + */ + strcpy(ifdev, "/dev/"); + q = ifdev + 5; /* strlen("/dev/") */ + while (*name != 0 && !isdigit(*name)) + *q++ = *name++; + *q = 0; + unit = atoi(name); + + /* + * Open the device and do a DLPI attach and phys_addr_req. + */ + iffd = open(ifdev, O_RDWR); + if (iffd < 0) { + syslog(LOG_ERR, "Can't open %s: %m", ifdev); + return 0; + } + if (dlpi_attach(iffd, unit) < 0 + || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0 + || dlpi_info_req(iffd) < 0 + || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) { + close(iffd); + return 0; + } + + adrlen = reply.prim.info_ack.dl_addr_length; + adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset; +#if DL_CURRENT_VERSION >= 2 + if (reply.prim.info_ack.dl_sap_length < 0) + adrlen += reply.prim.info_ack.dl_sap_length; + else + adrp += reply.prim.info_ack.dl_sap_length; +#endif + hwaddr->sa_family = AF_UNSPEC; + memcpy(hwaddr->sa_data, adrp, adrlen); + + return 1; +} + +static int +dlpi_attach(fd, ppa) + int fd, ppa; +{ + dl_attach_req_t req; + struct strbuf buf; + + req.dl_primitive = DL_ATTACH_REQ; + req.dl_ppa = ppa; + buf.len = sizeof(req); + buf.buf = (void *) &req; + return putmsg(fd, &buf, NULL, RS_HIPRI); +} + +static int +dlpi_info_req(fd) + int fd; +{ + dl_info_req_t req; + struct strbuf buf; + + req.dl_primitive = DL_INFO_REQ; + buf.len = sizeof(req); + buf.buf = (void *) &req; + return putmsg(fd, &buf, NULL, RS_HIPRI); +} + +static int +dlpi_get_reply(fd, reply, expected_prim, maxlen) + union DL_primitives *reply; + int fd, expected_prim, maxlen; +{ + struct strbuf buf; + int flags, n; + struct pollfd pfd; + + /* + * Use poll to wait for a message with a timeout. + */ + pfd.fd = fd; + pfd.events = POLLIN | POLLPRI; + do { + n = poll(&pfd, 1, 1000); + } while (n == -1 && errno == EINTR); + if (n <= 0) + return -1; + + /* + * Get the reply. + */ + buf.maxlen = maxlen; + buf.buf = (void *) reply; + flags = 0; + if (getmsg(fd, &buf, NULL, &flags) < 0) + return -1; + + if (buf.len < sizeof(ulong)) { + if (debug) + syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len); + return -1; + } + + if (reply->dl_primitive == expected_prim) + return 0; + + if (debug) { + if (reply->dl_primitive == DL_ERROR_ACK) { + syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n", + reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno, + reply->error_ack.dl_error_primitive); + } else { + syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n", + reply->dl_primitive); + } + } + + return -1; } /* @@ -840,10 +1455,12 @@ GetMask(addr) /* * Scan through the system's network interfaces. */ +#ifdef SIOCGIFNUM if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) +#endif nif = MAX_IFS; ifc.ifc_len = nif * sizeof(struct ifreq); - ifc.ifc_req = alloca(ifc.ifc_len); + ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len); if (ifc.ifc_req == 0) return mask; if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { @@ -857,7 +1474,7 @@ GetMask(addr) */ if (ifr->ifr_addr.sa_family != AF_INET) continue; - ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; + ina = INET_ADDR(ifr->ifr_addr); if ((ntohl(ina) & nmask) != (addr & nmask)) continue; /* @@ -874,7 +1491,7 @@ GetMask(addr) */ if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0) continue; - mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr; + mask |= INET_ADDR(ifreq.ifr_addr); } return mask; @@ -883,10 +1500,24 @@ GetMask(addr) /* * logwtmp - write an accounting record to the /var/adm/wtmp file. */ -int +void logwtmp(line, name, host) - char *line, *name, *host; + const char *line, *name, *host; { + static struct utmpx utmpx; + + if (name[0] != 0) { + /* logging in */ + strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user)); + strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id)); + strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line)); + utmpx.ut_pid = getpid(); + utmpx.ut_type = USER_PROCESS; + } else { + utmpx.ut_type = DEAD_PROCESS; + } + gettimeofday(&utmpx.ut_tv, NULL); + updwtmpx("/var/adm/wtmpx", &utmpx); } /* @@ -901,13 +1532,13 @@ gethostid() syslog(LOG_ERR, "sysinfo: %m"); return 0; } - return strtol(buf, NULL, 16); + return (int) strtoul(buf, NULL, 16); } -int +static int strioctl(fd, cmd, ptr, ilen, olen) int fd, cmd, ilen, olen; - char *ptr; + void *ptr; { struct strioctl str; @@ -923,15 +1554,105 @@ strioctl(fd, cmd, ptr, ilen, olen) return 0; } +/* + * lock - create a lock file for the named lock device + */ + +#define LOCK_PREFIX "/var/spool/locks/LK." +static char lock_file[40]; /* name of lock file created */ + int lock(dev) char *dev; { + int n, fd, pid; + struct stat sbuf; + char ascii_pid[12]; + + if (stat(dev, &sbuf) < 0) { + syslog(LOG_ERR, "Can't get device number for %s: %m", dev); + return -1; + } + if ((sbuf.st_mode & S_IFMT) != S_IFCHR) { + syslog(LOG_ERR, "Can't lock %s: not a character device", dev); + return -1; + } + sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev), + major(sbuf.st_rdev), minor(sbuf.st_rdev)); + + while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) { + if (errno == EEXIST + && (fd = open(lock_file, O_RDONLY, 0)) >= 0) { + /* Read the lock file to find out who has the device locked */ + n = read(fd, ascii_pid, 11); + if (n <= 0) { + syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file); + close(fd); + } else { + ascii_pid[n] = 0; + pid = atoi(ascii_pid); + if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) { + /* pid no longer exists - remove the lock file */ + 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); + lock_file[0] = 0; + return -1; + } + + sprintf(ascii_pid, "%10d\n", getpid()); + write(fd, ascii_pid, 11); + + close(fd); return 1; } -int +/* + * unlock - remove our lockfile + */ +void unlock() { + if (lock_file[0]) { + unlink(lock_file); + lock_file[0] = 0; + } +} + + +/* + * cifroute - delete a route through the addresses given. + */ +int +cifroute(u, our, his) + int u; + u_int32_t our, his; +{ + struct rtentry rt; + + memset(&rt, 0, sizeof(rt)); + rt.rt_dst.sa_family = AF_INET; + INET_ADDR(rt.rt_dst) = his; + rt.rt_gateway.sa_family = AF_INET; + INET_ADDR(rt.rt_gateway) = our; + rt.rt_flags = RTF_HOST; + + if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { + syslog(LOG_ERR, "Can't delete route: %m"); + return 0; + } + return 1; }