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| Current File : //compat/linux/proc/self/root/usr/src/usr.sbin/ppp/physical.c |
/*
* Written by Eivind Eklund <eivind@yes.no>
* for Yes Interactive
*
* Copyright (C) 1998, Yes Interactive. All rights reserved.
*
* Redistribution and use in any form is permitted. Redistribution in
* source form should include the above copyright and this set of
* conditions, because large sections american law seems to have been
* created by a bunch of jerks on drugs that are now illegal, forcing
* me to include this copyright-stuff instead of placing this in the
* public domain. The name of of 'Yes Interactive' or 'Eivind Eklund'
* 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.
*
* $FreeBSD: release/9.1.0/usr.sbin/ppp/physical.c 202192 2010-01-13 17:54:32Z ed $
*
*/
#include <sys/param.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#ifdef NOSUID
#include <signal.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/uio.h>
#include <sysexits.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <utmpx.h>
#if defined(__OpenBSD__) || defined(__NetBSD__)
#include <sys/ioctl.h>
#include <util.h>
#else
#include <libutil.h>
#endif
#include "layer.h"
#ifndef NONAT
#include "nat_cmd.h"
#endif
#include "proto.h"
#include "acf.h"
#include "vjcomp.h"
#include "defs.h"
#include "command.h"
#include "mbuf.h"
#include "log.h"
#include "id.h"
#include "timer.h"
#include "fsm.h"
#include "lqr.h"
#include "hdlc.h"
#include "lcp.h"
#include "throughput.h"
#include "sync.h"
#include "async.h"
#include "iplist.h"
#include "slcompress.h"
#include "ncpaddr.h"
#include "ipcp.h"
#include "filter.h"
#include "descriptor.h"
#include "ccp.h"
#include "link.h"
#include "physical.h"
#include "mp.h"
#ifndef NORADIUS
#include "radius.h"
#endif
#include "ipv6cp.h"
#include "ncp.h"
#include "bundle.h"
#include "prompt.h"
#include "chat.h"
#include "auth.h"
#include "main.h"
#include "chap.h"
#include "cbcp.h"
#include "datalink.h"
#include "tcp.h"
#include "udp.h"
#include "exec.h"
#include "tty.h"
#ifndef NONETGRAPH
#include "ether.h"
#include "netgraph.h"
#endif
#ifndef NOATM
#include "atm.h"
#endif
#include "tcpmss.h"
static int physical_DescriptorWrite(struct fdescriptor *, struct bundle *,
const fd_set *);
static unsigned
physical_DeviceSize(void)
{
return sizeof(struct device);
}
struct {
struct device *(*create)(struct physical *);
struct device *(*iov2device)(int, struct physical *, struct iovec *,
int *, int, int *, int *);
unsigned (*DeviceSize)(void);
} devices[] = {
{ tty_Create, tty_iov2device, tty_DeviceSize },
#ifndef NONETGRAPH
/*
* This must come before ``udp'' so that the probe routine is
* able to identify it as a more specific type of SOCK_DGRAM.
*/
{ ether_Create, ether_iov2device, ether_DeviceSize },
#ifdef EXPERIMENTAL_NETGRAPH
{ ng_Create, ng_iov2device, ng_DeviceSize },
#endif
#endif
#ifndef NOATM
/* Ditto for ATM devices */
{ atm_Create, atm_iov2device, atm_DeviceSize },
#endif
{ tcp_Create, tcp_iov2device, tcp_DeviceSize },
{ udp_Create, udp_iov2device, udp_DeviceSize },
{ exec_Create, exec_iov2device, exec_DeviceSize }
};
#define NDEVICES (sizeof devices / sizeof devices[0])
static int
physical_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
int *n)
{
return physical_doUpdateSet(d, r, w, e, n, 0);
}
void
physical_SetDescriptor(struct physical *p)
{
p->desc.type = PHYSICAL_DESCRIPTOR;
p->desc.UpdateSet = physical_UpdateSet;
p->desc.IsSet = physical_IsSet;
p->desc.Read = physical_DescriptorRead;
p->desc.Write = physical_DescriptorWrite;
}
struct physical *
physical_Create(struct datalink *dl, int type)
{
struct physical *p;
p = (struct physical *)malloc(sizeof(struct physical));
if (!p)
return NULL;
p->link.type = PHYSICAL_LINK;
p->link.name = dl->name;
p->link.len = sizeof *p;
/* The sample period is fixed - see physical2iov() & iov2physical() */
throughput_init(&p->link.stats.total, SAMPLE_PERIOD);
p->link.stats.parent = dl->bundle->ncp.mp.active ?
&dl->bundle->ncp.mp.link.stats.total : NULL;
p->link.stats.gather = 1;
memset(p->link.Queue, '\0', sizeof p->link.Queue);
memset(p->link.proto_in, '\0', sizeof p->link.proto_in);
memset(p->link.proto_out, '\0', sizeof p->link.proto_out);
link_EmptyStack(&p->link);
p->handler = NULL;
physical_SetDescriptor(p);
p->type = type;
hdlc_Init(&p->hdlc, &p->link.lcp);
async_Init(&p->async);
p->fd = -1;
p->out = NULL;
p->connect_count = 0;
p->dl = dl;
p->input.sz = 0;
*p->name.full = '\0';
p->name.base = p->name.full;
p->Utmp = 0;
p->session_owner = (pid_t)-1;
p->cfg.rts_cts = MODEM_CTSRTS;
p->cfg.speed = MODEM_SPEED;
p->cfg.parity = CS8;
memcpy(p->cfg.devlist, MODEM_LIST, sizeof MODEM_LIST);
p->cfg.ndev = NMODEMS;
p->cfg.cd.necessity = CD_DEFAULT;
p->cfg.cd.delay = 0; /* reconfigured or device specific default */
lcp_Init(&p->link.lcp, dl->bundle, &p->link, &dl->fsmp);
ccp_Init(&p->link.ccp, dl->bundle, &p->link, &dl->fsmp);
return p;
}
static const struct parity {
const char *name;
const char *name1;
int set;
} validparity[] = {
{ "even", "P_EVEN", CS7 | PARENB },
{ "odd", "P_ODD", CS7 | PARENB | PARODD },
{ "none", "P_ZERO", CS8 },
{ NULL, NULL, 0 },
};
static int
GetParityValue(const char *str)
{
const struct parity *pp;
for (pp = validparity; pp->name; pp++) {
if (strcasecmp(pp->name, str) == 0 ||
strcasecmp(pp->name1, str) == 0) {
return pp->set;
}
}
return (-1);
}
int
physical_SetParity(struct physical *p, const char *str)
{
struct termios rstio;
int val;
val = GetParityValue(str);
if (val > 0) {
p->cfg.parity = val;
if (p->fd >= 0) {
tcgetattr(p->fd, &rstio);
rstio.c_cflag &= ~(CSIZE | PARODD | PARENB);
rstio.c_cflag |= val;
tcsetattr(p->fd, TCSADRAIN, &rstio);
}
return 0;
}
log_Printf(LogWARN, "%s: %s: Invalid parity\n", p->link.name, str);
return -1;
}
unsigned
physical_GetSpeed(struct physical *p)
{
if (p->handler && p->handler->speed)
return (*p->handler->speed)(p);
return 0;
}
int
physical_SetSpeed(struct physical *p, unsigned speed)
{
if (UnsignedToSpeed(speed) != B0) {
p->cfg.speed = speed;
return 1;
}
return 0;
}
int
physical_Raw(struct physical *p)
{
if (p->handler && p->handler->raw)
return (*p->handler->raw)(p);
return 1;
}
void
physical_Offline(struct physical *p)
{
if (p->handler && p->handler->offline)
(*p->handler->offline)(p);
log_Printf(LogPHASE, "%s: Disconnected!\n", p->link.name);
}
static int
physical_Lock(struct physical *p)
{
int res;
if (*p->name.full == '/' && p->type != PHYS_DIRECT &&
(res = ID0uu_lock(p->name.base)) != UU_LOCK_OK) {
if (res == UU_LOCK_INUSE)
log_Printf(LogPHASE, "%s: %s is in use\n", p->link.name, p->name.full);
else
log_Printf(LogPHASE, "%s: %s is in use: uu_lock: %s\n",
p->link.name, p->name.full, uu_lockerr(res));
return 0;
}
return 1;
}
static void
physical_Unlock(struct physical *p)
{
if (*p->name.full == '/' && p->type != PHYS_DIRECT &&
ID0uu_unlock(p->name.base) == -1)
log_Printf(LogALERT, "%s: Can't uu_unlock %s\n", p->link.name,
p->name.base);
}
void
physical_Close(struct physical *p)
{
int newsid;
char fn[PATH_MAX];
struct utmpx ut;
if (p->fd < 0)
return;
log_Printf(LogDEBUG, "%s: Close\n", p->link.name);
if (p->handler && p->handler->cooked)
(*p->handler->cooked)(p);
physical_StopDeviceTimer(p);
if (p->Utmp) {
memset(&ut, 0, sizeof ut);
ut.ut_type = DEAD_PROCESS;
gettimeofday(&ut.ut_tv, NULL);
snprintf(ut.ut_id, sizeof ut.ut_id, "%xppp", (int)getpid());
ID0logout(&ut);
p->Utmp = 0;
}
newsid = tcgetpgrp(p->fd) == getpgrp();
close(p->fd);
p->fd = -1;
log_SetTtyCommandMode(p->dl);
throughput_stop(&p->link.stats.total);
throughput_log(&p->link.stats.total, LogPHASE, p->link.name);
if (p->session_owner != (pid_t)-1) {
log_Printf(LogPHASE, "%s: HUPing %ld\n", p->link.name,
(long)p->session_owner);
ID0kill(p->session_owner, SIGHUP);
p->session_owner = (pid_t)-1;
}
if (newsid)
bundle_setsid(p->dl->bundle, 0);
if (*p->name.full == '/') {
snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base);
#ifndef RELEASE_CRUNCH
if (ID0unlink(fn) == -1)
log_Printf(LogALERT, "%s: Can't remove %s: %s\n",
p->link.name, fn, strerror(errno));
#else
ID0unlink(fn);
#endif
}
physical_Unlock(p);
if (p->handler && p->handler->destroy)
(*p->handler->destroy)(p);
p->handler = NULL;
p->name.base = p->name.full;
*p->name.full = '\0';
}
void
physical_Destroy(struct physical *p)
{
physical_Close(p);
throughput_destroy(&p->link.stats.total);
free(p);
}
static int
physical_DescriptorWrite(struct fdescriptor *d, struct bundle *bundle __unused,
const fd_set *fdset __unused)
{
struct physical *p = descriptor2physical(d);
int nw, result = 0;
if (p->out == NULL)
p->out = link_Dequeue(&p->link);
if (p->out) {
nw = physical_Write(p, MBUF_CTOP(p->out), p->out->m_len);
log_Printf(LogDEBUG, "%s: DescriptorWrite: wrote %d(%lu) to %d\n",
p->link.name, nw, (unsigned long)p->out->m_len, p->fd);
if (nw > 0) {
p->out->m_len -= nw;
p->out->m_offset += nw;
if (p->out->m_len == 0)
p->out = m_free(p->out);
result = 1;
} else if (nw < 0) {
if (errno == EAGAIN)
result = 1;
else if (errno != ENOBUFS) {
log_Printf(LogPHASE, "%s: write (fd %d, len %zd): %s\n", p->link.name,
p->fd, p->out->m_len, strerror(errno));
datalink_Down(p->dl, CLOSE_NORMAL);
}
}
/* else we shouldn't really have been called ! select() is broken ! */
}
return result;
}
int
physical_ShowStatus(struct cmdargs const *arg)
{
struct physical *p = arg->cx->physical;
struct cd *cd;
const char *dev;
int n, slot;
prompt_Printf(arg->prompt, "Name: %s\n", p->link.name);
prompt_Printf(arg->prompt, " State: ");
if (p->fd < 0)
prompt_Printf(arg->prompt, "closed\n");
else {
slot = physical_Slot(p);
if (p->handler && p->handler->openinfo) {
if (slot == -1)
prompt_Printf(arg->prompt, "open (%s)\n", (*p->handler->openinfo)(p));
else
prompt_Printf(arg->prompt, "open (%s, port %d)\n",
(*p->handler->openinfo)(p), slot);
} else if (slot == -1)
prompt_Printf(arg->prompt, "open\n");
else
prompt_Printf(arg->prompt, "open (port %d)\n", slot);
}
prompt_Printf(arg->prompt, " Device: %s",
*p->name.full ? p->name.full :
p->type == PHYS_DIRECT ? "unknown" : "N/A");
if (p->session_owner != (pid_t)-1)
prompt_Printf(arg->prompt, " (session owner: %ld)", (long)p->session_owner);
prompt_Printf(arg->prompt, "\n Link Type: %s\n", mode2Nam(p->type));
prompt_Printf(arg->prompt, " Connect Count: %d\n", p->connect_count);
#ifdef TIOCOUTQ
if (p->fd >= 0 && ioctl(p->fd, TIOCOUTQ, &n) >= 0)
prompt_Printf(arg->prompt, " Physical outq: %d\n", n);
#endif
prompt_Printf(arg->prompt, " Queued Packets: %lu\n",
(u_long)link_QueueLen(&p->link));
prompt_Printf(arg->prompt, " Phone Number: %s\n", arg->cx->phone.chosen);
prompt_Printf(arg->prompt, "\nDefaults:\n");
prompt_Printf(arg->prompt, " Device List: ");
dev = p->cfg.devlist;
for (n = 0; n < p->cfg.ndev; n++) {
if (n)
prompt_Printf(arg->prompt, ", ");
prompt_Printf(arg->prompt, "\"%s\"", dev);
dev += strlen(dev) + 1;
}
prompt_Printf(arg->prompt, "\n Characteristics: ");
if (physical_IsSync(arg->cx->physical))
prompt_Printf(arg->prompt, "sync");
else
prompt_Printf(arg->prompt, "%dbps", p->cfg.speed);
switch (p->cfg.parity & CSIZE) {
case CS7:
prompt_Printf(arg->prompt, ", cs7");
break;
case CS8:
prompt_Printf(arg->prompt, ", cs8");
break;
}
if (p->cfg.parity & PARENB) {
if (p->cfg.parity & PARODD)
prompt_Printf(arg->prompt, ", odd parity");
else
prompt_Printf(arg->prompt, ", even parity");
} else
prompt_Printf(arg->prompt, ", no parity");
prompt_Printf(arg->prompt, ", CTS/RTS %s\n", (p->cfg.rts_cts ? "on" : "off"));
prompt_Printf(arg->prompt, " CD check delay: ");
cd = p->handler ? &p->handler->cd : &p->cfg.cd;
if (cd->necessity == CD_NOTREQUIRED)
prompt_Printf(arg->prompt, "no cd");
else if (p->cfg.cd.necessity == CD_DEFAULT) {
prompt_Printf(arg->prompt, "device specific");
} else {
prompt_Printf(arg->prompt, "%d second%s", p->cfg.cd.delay,
p->cfg.cd.delay == 1 ? "" : "s");
if (p->cfg.cd.necessity == CD_REQUIRED)
prompt_Printf(arg->prompt, " (required!)");
}
prompt_Printf(arg->prompt, "\n\n");
throughput_disp(&p->link.stats.total, arg->prompt);
return 0;
}
void
physical_DescriptorRead(struct fdescriptor *d, struct bundle *bundle,
const fd_set *fdset __unused)
{
struct physical *p = descriptor2physical(d);
u_char *rbuff;
int n, found;
rbuff = p->input.buf + p->input.sz;
/* something to read */
n = physical_Read(p, rbuff, sizeof p->input.buf - p->input.sz);
log_Printf(LogDEBUG, "%s: DescriptorRead: read %d/%d from %d\n",
p->link.name, n, (int)(sizeof p->input.buf - p->input.sz), p->fd);
if (n <= 0) {
if (n < 0)
log_Printf(LogPHASE, "%s: read (%d): %s\n", p->link.name, p->fd,
strerror(errno));
else
log_Printf(LogPHASE, "%s: read (%d): Got zero bytes\n",
p->link.name, p->fd);
datalink_Down(p->dl, CLOSE_NORMAL);
return;
}
rbuff -= p->input.sz;
n += p->input.sz;
if (p->link.lcp.fsm.state <= ST_CLOSED) {
if (p->type != PHYS_DEDICATED) {
found = hdlc_Detect((u_char const **)&rbuff, n, physical_IsSync(p));
if (rbuff != p->input.buf)
log_WritePrompts(p->dl, "%.*s", (int)(rbuff - p->input.buf),
p->input.buf);
p->input.sz = n - (rbuff - p->input.buf);
if (found) {
/* LCP packet is detected. Turn ourselves into packet mode */
log_Printf(LogPHASE, "%s: PPP packet detected, coming up\n",
p->link.name);
log_SetTtyCommandMode(p->dl);
datalink_Up(p->dl, 0, 1);
link_PullPacket(&p->link, rbuff, p->input.sz, bundle);
p->input.sz = 0;
} else
bcopy(rbuff, p->input.buf, p->input.sz);
} else
/* In -dedicated mode, we just discard input until LCP is started */
p->input.sz = 0;
} else if (n > 0)
link_PullPacket(&p->link, rbuff, n, bundle);
}
struct physical *
iov2physical(struct datalink *dl, struct iovec *iov, int *niov, int maxiov,
int fd, int *auxfd, int *nauxfd)
{
struct physical *p;
int len, type;
unsigned h;
p = (struct physical *)iov[(*niov)++].iov_base;
p->link.name = dl->name;
memset(p->link.Queue, '\0', sizeof p->link.Queue);
p->desc.UpdateSet = physical_UpdateSet;
p->desc.IsSet = physical_IsSet;
p->desc.Read = physical_DescriptorRead;
p->desc.Write = physical_DescriptorWrite;
p->type = PHYS_DIRECT;
p->dl = dl;
len = strlen(_PATH_DEV);
p->out = NULL;
p->connect_count = 1;
physical_SetDevice(p, p->name.full);
p->link.lcp.fsm.bundle = dl->bundle;
p->link.lcp.fsm.link = &p->link;
memset(&p->link.lcp.fsm.FsmTimer, '\0', sizeof p->link.lcp.fsm.FsmTimer);
memset(&p->link.lcp.fsm.OpenTimer, '\0', sizeof p->link.lcp.fsm.OpenTimer);
memset(&p->link.lcp.fsm.StoppedTimer, '\0',
sizeof p->link.lcp.fsm.StoppedTimer);
p->link.lcp.fsm.parent = &dl->fsmp;
lcp_SetupCallbacks(&p->link.lcp);
p->link.ccp.fsm.bundle = dl->bundle;
p->link.ccp.fsm.link = &p->link;
/* Our in.state & out.state are NULL (no link-level ccp yet) */
memset(&p->link.ccp.fsm.FsmTimer, '\0', sizeof p->link.ccp.fsm.FsmTimer);
memset(&p->link.ccp.fsm.OpenTimer, '\0', sizeof p->link.ccp.fsm.OpenTimer);
memset(&p->link.ccp.fsm.StoppedTimer, '\0',
sizeof p->link.ccp.fsm.StoppedTimer);
p->link.ccp.fsm.parent = &dl->fsmp;
ccp_SetupCallbacks(&p->link.ccp);
p->hdlc.lqm.owner = &p->link.lcp;
p->hdlc.ReportTimer.state = TIMER_STOPPED;
p->hdlc.lqm.timer.state = TIMER_STOPPED;
p->fd = fd;
p->link.stats.total.in.SampleOctets = (long long *)iov[(*niov)++].iov_base;
p->link.stats.total.out.SampleOctets = (long long *)iov[(*niov)++].iov_base;
p->link.stats.parent = dl->bundle->ncp.mp.active ?
&dl->bundle->ncp.mp.link.stats.total : NULL;
p->link.stats.gather = 1;
type = (long)p->handler;
p->handler = NULL;
for (h = 0; h < NDEVICES && p->handler == NULL; h++)
p->handler = (*devices[h].iov2device)(type, p, iov, niov, maxiov,
auxfd, nauxfd);
if (p->handler == NULL) {
log_Printf(LogPHASE, "%s: Unknown link type\n", p->link.name);
free(iov[(*niov)++].iov_base);
physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE);
} else
log_Printf(LogPHASE, "%s: Device %s, link type is %s\n",
p->link.name, p->name.full, p->handler->name);
if (p->hdlc.lqm.method && p->hdlc.lqm.timer.load)
lqr_reStart(&p->link.lcp);
hdlc_StartTimer(&p->hdlc);
throughput_restart(&p->link.stats.total, "physical throughput",
Enabled(dl->bundle, OPT_THROUGHPUT));
return p;
}
unsigned
physical_MaxDeviceSize()
{
unsigned biggest, sz, n;
biggest = sizeof(struct device);
for (n = 0; n < NDEVICES; n++)
if (devices[n].DeviceSize) {
sz = (*devices[n].DeviceSize)();
if (biggest < sz)
biggest = sz;
}
return biggest;
}
int
physical2iov(struct physical *p, struct iovec *iov, int *niov, int maxiov,
int *auxfd, int *nauxfd)
{
struct device *h;
int sz;
h = NULL;
if (p) {
hdlc_StopTimer(&p->hdlc);
lqr_StopTimer(p);
timer_Stop(&p->link.lcp.fsm.FsmTimer);
timer_Stop(&p->link.ccp.fsm.FsmTimer);
timer_Stop(&p->link.lcp.fsm.OpenTimer);
timer_Stop(&p->link.ccp.fsm.OpenTimer);
timer_Stop(&p->link.lcp.fsm.StoppedTimer);
timer_Stop(&p->link.ccp.fsm.StoppedTimer);
if (p->handler) {
h = p->handler;
p->handler = (struct device *)(long)p->handler->type;
}
if (Enabled(p->dl->bundle, OPT_KEEPSESSION) ||
tcgetpgrp(p->fd) == getpgrp())
p->session_owner = getpid(); /* So I'll eventually get HUP'd */
else
p->session_owner = (pid_t)-1;
timer_Stop(&p->link.stats.total.Timer);
}
if (*niov + 2 >= maxiov) {
log_Printf(LogERROR, "physical2iov: No room for physical + throughput"
" + device !\n");
if (p)
free(p);
return -1;
}
iov[*niov].iov_base = (void *)p;
iov[*niov].iov_len = sizeof *p;
(*niov)++;
iov[*niov].iov_base = p ? (void *)p->link.stats.total.in.SampleOctets : NULL;
iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long);
(*niov)++;
iov[*niov].iov_base = p ? (void *)p->link.stats.total.out.SampleOctets : NULL;
iov[*niov].iov_len = SAMPLE_PERIOD * sizeof(long long);
(*niov)++;
sz = physical_MaxDeviceSize();
if (p) {
if (h && h->device2iov)
(*h->device2iov)(h, iov, niov, maxiov, auxfd, nauxfd);
else {
if ((iov[*niov].iov_base = malloc(sz)) == NULL) {
log_Printf(LogALERT, "physical2iov: Out of memory (%d bytes)\n", sz);
AbortProgram(EX_OSERR);
}
if (h)
memcpy(iov[*niov].iov_base, h, sizeof *h);
iov[*niov].iov_len = sz;
(*niov)++;
}
} else {
iov[*niov].iov_base = NULL;
iov[*niov].iov_len = sz;
(*niov)++;
}
return p ? p->fd : 0;
}
const char *
physical_LockedDevice(struct physical *p)
{
if (p->fd >= 0 && *p->name.full == '/' && p->type != PHYS_DIRECT)
return p->name.base;
return NULL;
}
void
physical_ChangedPid(struct physical *p, pid_t newpid)
{
if (physical_LockedDevice(p)) {
int res;
if ((res = ID0uu_lock_txfr(p->name.base, newpid)) != UU_LOCK_OK)
log_Printf(LogPHASE, "uu_lock_txfr: %s\n", uu_lockerr(res));
}
}
int
physical_IsSync(struct physical *p)
{
return p->cfg.speed == 0;
}
u_short
physical_DeviceMTU(struct physical *p)
{
return p->handler ? p->handler->mtu : 0;
}
const char *physical_GetDevice(struct physical *p)
{
return p->name.full;
}
void
physical_SetDeviceList(struct physical *p, int argc, const char *const *argv)
{
unsigned pos;
int f;
p->cfg.devlist[sizeof p->cfg.devlist - 1] = '\0';
for (f = 0, pos = 0; f < argc && pos < sizeof p->cfg.devlist - 1; f++) {
if (pos)
p->cfg.devlist[pos++] = '\0';
strncpy(p->cfg.devlist + pos, argv[f], sizeof p->cfg.devlist - pos - 1);
pos += strlen(p->cfg.devlist + pos);
}
p->cfg.ndev = f;
}
void
physical_SetSync(struct physical *p)
{
p->cfg.speed = 0;
}
int
physical_SetRtsCts(struct physical *p, int enable)
{
p->cfg.rts_cts = enable ? 1 : 0;
return 1;
}
ssize_t
physical_Read(struct physical *p, void *buf, size_t nbytes)
{
ssize_t ret;
if (p->handler && p->handler->read)
ret = (*p->handler->read)(p, buf, nbytes);
else
ret = read(p->fd, buf, nbytes);
log_DumpBuff(LogPHYSICAL, "read", buf, ret);
return ret;
}
ssize_t
physical_Write(struct physical *p, const void *buf, size_t nbytes)
{
log_DumpBuff(LogPHYSICAL, "write", buf, nbytes);
if (p->handler && p->handler->write)
return (*p->handler->write)(p, buf, nbytes);
return write(p->fd, buf, nbytes);
}
int
physical_doUpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e,
int *n, int force)
{
struct physical *p = descriptor2physical(d);
int sets;
sets = 0;
if (p->fd >= 0) {
if (r) {
FD_SET(p->fd, r);
log_Printf(LogTIMER, "%s: fdset(r) %d\n", p->link.name, p->fd);
sets++;
}
if (e) {
FD_SET(p->fd, e);
log_Printf(LogTIMER, "%s: fdset(e) %d\n", p->link.name, p->fd);
sets++;
}
if (w && (force || link_QueueLen(&p->link) || p->out)) {
FD_SET(p->fd, w);
log_Printf(LogTIMER, "%s: fdset(w) %d\n", p->link.name, p->fd);
sets++;
}
if (sets && *n < p->fd + 1)
*n = p->fd + 1;
}
return sets;
}
int
physical_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e)
{
if (p->handler && p->handler->removefromset)
return (*p->handler->removefromset)(p, r, w, e);
else {
int sets;
sets = 0;
if (p->fd >= 0) {
if (r && FD_ISSET(p->fd, r)) {
FD_CLR(p->fd, r);
log_Printf(LogTIMER, "%s: fdunset(r) %d\n", p->link.name, p->fd);
sets++;
}
if (e && FD_ISSET(p->fd, e)) {
FD_CLR(p->fd, e);
log_Printf(LogTIMER, "%s: fdunset(e) %d\n", p->link.name, p->fd);
sets++;
}
if (w && FD_ISSET(p->fd, w)) {
FD_CLR(p->fd, w);
log_Printf(LogTIMER, "%s: fdunset(w) %d\n", p->link.name, p->fd);
sets++;
}
}
return sets;
}
}
int
physical_IsSet(struct fdescriptor *d, const fd_set *fdset)
{
struct physical *p = descriptor2physical(d);
return p->fd >= 0 && FD_ISSET(p->fd, fdset);
}
void
physical_Login(struct physical *p, const char *name)
{
if (p->type == PHYS_DIRECT && *p->name.base && !p->Utmp) {
struct utmpx ut;
const char *connstr;
char *colon;
memset(&ut, 0, sizeof ut);
ut.ut_type = USER_PROCESS;
gettimeofday(&ut.ut_tv, NULL);
snprintf(ut.ut_id, sizeof ut.ut_id, "%xppp", (int)getpid());
strncpy(ut.ut_user, name, sizeof ut.ut_user);
if (p->handler && (p->handler->type == TCP_DEVICE ||
p->handler->type == UDP_DEVICE)) {
strncpy(ut.ut_host, p->name.base, sizeof ut.ut_host);
colon = memchr(ut.ut_host, ':', sizeof ut.ut_host);
if (colon)
*colon = '\0';
} else
strncpy(ut.ut_line, p->name.base, sizeof ut.ut_line);
if ((connstr = getenv("CONNECT")))
/* mgetty sets this to the connection speed */
strncpy(ut.ut_host, connstr, sizeof ut.ut_host);
ID0login(&ut);
p->Utmp = 1;
}
}
int
physical_SetMode(struct physical *p, int mode)
{
if ((p->type & (PHYS_DIRECT|PHYS_DEDICATED) ||
mode & (PHYS_DIRECT|PHYS_DEDICATED)) &&
(!(p->type & PHYS_DIRECT) || !(mode & PHYS_BACKGROUND))) {
/* Note: The -direct -> -background is for callback ! */
log_Printf(LogWARN, "%s: Cannot change mode %s to %s\n", p->link.name,
mode2Nam(p->type), mode2Nam(mode));
return 0;
}
p->type = mode;
return 1;
}
void
physical_DeleteQueue(struct physical *p)
{
if (p->out) {
m_freem(p->out);
p->out = NULL;
}
link_DeleteQueue(&p->link);
}
void
physical_SetDevice(struct physical *p, const char *name)
{
int len = strlen(_PATH_DEV);
if (name != p->name.full) {
strncpy(p->name.full, name, sizeof p->name.full - 1);
p->name.full[sizeof p->name.full - 1] = '\0';
}
p->name.base = *p->name.full == '!' ? p->name.full + 1 :
strncmp(p->name.full, _PATH_DEV, len) ?
p->name.full : p->name.full + len;
}
static void
physical_Found(struct physical *p)
{
FILE *lockfile;
char fn[PATH_MAX];
if (*p->name.full == '/') {
snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, p->name.base);
lockfile = ID0fopen(fn, "w");
if (lockfile != NULL) {
fprintf(lockfile, "%s%d\n", TUN_NAME, p->dl->bundle->unit);
fclose(lockfile);
}
#ifndef RELEASE_CRUNCH
else
log_Printf(LogALERT, "%s: Can't create %s: %s\n",
p->link.name, fn, strerror(errno));
#endif
}
throughput_start(&p->link.stats.total, "physical throughput",
Enabled(p->dl->bundle, OPT_THROUGHPUT));
p->connect_count++;
p->input.sz = 0;
log_Printf(LogPHASE, "%s: Connected!\n", p->link.name);
}
int
physical_Open(struct physical *p)
{
char *dev;
int devno, wasfd, err;
unsigned h;
if (p->fd >= 0)
log_Printf(LogDEBUG, "%s: Open: Modem is already open!\n", p->link.name);
/* We're going back into "term" mode */
else if (p->type == PHYS_DIRECT) {
physical_SetDevice(p, "");
p->fd = STDIN_FILENO;
for (h = 0; h < NDEVICES && p->handler == NULL && p->fd >= 0; h++)
p->handler = (*devices[h].create)(p);
close(STDOUT_FILENO);
if (p->fd >= 0) {
if (p->handler == NULL) {
physical_SetupStack(p, "unknown", PHYSICAL_NOFORCE);
log_Printf(LogDEBUG, "%s: stdin is unidentified\n", p->link.name);
}
physical_Found(p);
}
} else {
dev = p->cfg.devlist;
devno = 0;
while (devno < p->cfg.ndev && p->fd < 0) {
physical_SetDevice(p, dev);
if (physical_Lock(p)) {
err = 0;
if (*p->name.full == '/') {
p->fd = ID0open(p->name.full, O_RDWR | O_NONBLOCK);
if (p->fd < 0)
err = errno;
}
wasfd = p->fd;
for (h = 0; h < NDEVICES && p->handler == NULL; h++)
if ((p->handler = (*devices[h].create)(p)) == NULL && wasfd != p->fd)
break;
if (p->fd < 0) {
if (h == NDEVICES) {
if (err)
log_Printf(LogWARN, "%s: %s: %s\n", p->link.name, p->name.full,
strerror(errno));
else
log_Printf(LogWARN, "%s: Device (%s) must begin with a '/',"
" a '!' or contain at least one ':'\n", p->link.name,
p->name.full);
}
physical_Unlock(p);
} else
physical_Found(p);
}
dev += strlen(dev) + 1;
devno++;
}
}
return p->fd;
}
void
physical_SetupStack(struct physical *p, const char *who, int how)
{
link_EmptyStack(&p->link);
if (how == PHYSICAL_FORCE_SYNC || how == PHYSICAL_FORCE_SYNCNOACF ||
(how == PHYSICAL_NOFORCE && physical_IsSync(p)))
link_Stack(&p->link, &synclayer);
else {
link_Stack(&p->link, &asynclayer);
link_Stack(&p->link, &hdlclayer);
}
if (how != PHYSICAL_FORCE_SYNCNOACF)
link_Stack(&p->link, &acflayer);
link_Stack(&p->link, &protolayer);
link_Stack(&p->link, &lqrlayer);
link_Stack(&p->link, &ccplayer);
link_Stack(&p->link, &vjlayer);
link_Stack(&p->link, &tcpmsslayer);
#ifndef NONAT
link_Stack(&p->link, &natlayer);
#endif
if (how == PHYSICAL_FORCE_ASYNC && physical_IsSync(p)) {
log_Printf(LogWARN, "Sync device setting ignored for ``%s'' device\n", who);
p->cfg.speed = MODEM_SPEED;
} else if (how == PHYSICAL_FORCE_SYNC && !physical_IsSync(p)) {
log_Printf(LogWARN, "Async device setting ignored for ``%s'' device\n",
who);
physical_SetSync(p);
}
}
void
physical_StopDeviceTimer(struct physical *p)
{
if (p->handler && p->handler->stoptimer)
(*p->handler->stoptimer)(p);
}
int
physical_AwaitCarrier(struct physical *p)
{
if (p->handler && p->handler->awaitcarrier)
return (*p->handler->awaitcarrier)(p);
return CARRIER_OK;
}
void
physical_SetAsyncParams(struct physical *p, u_int32_t mymap, u_int32_t hismap)
{
if (p->handler && p->handler->setasyncparams)
return (*p->handler->setasyncparams)(p, mymap, hismap);
async_SetLinkParams(&p->async, mymap, hismap);
}
int
physical_Slot(struct physical *p)
{
if (p->handler && p->handler->slot)
return (*p->handler->slot)(p);
return -1;
}
int
physical_SetPPPoEnonstandard(struct physical *p, int enable)
{
p->cfg.nonstandard_pppoe = enable ? 1 : 0;
p->cfg.pppoe_configured = 1;
return 1;
}