diff options
Diffstat (limited to 'usr.sbin/ppp/modem.c')
-rw-r--r-- | usr.sbin/ppp/modem.c | 92 |
1 files changed, 71 insertions, 21 deletions
diff --git a/usr.sbin/ppp/modem.c b/usr.sbin/ppp/modem.c index 9cd0098..c74da3b 100644 --- a/usr.sbin/ppp/modem.c +++ b/usr.sbin/ppp/modem.c @@ -17,7 +17,7 @@ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * - * $Id: modem.c,v 1.53 1997/09/18 00:15:25 brian Exp $ + * $Id: modem.c,v 1.54 1997/09/21 20:26:47 brian Exp $ * * TODO: */ @@ -31,6 +31,7 @@ #include <netdb.h> #include <errno.h> #include <time.h> +#include <paths.h> #ifdef __OpenBSD__ #include <util.h> #else @@ -42,6 +43,7 @@ #include "modem.h" #include "loadalias.h" #include "vars.h" +#include "command.h" #ifndef O_NONBLOCK #ifdef O_NDELAY @@ -428,6 +430,53 @@ OpenConnection(char *host, char *port) return (sock); } +extern int tunno; +static char fn[MAXPATHLEN]; + +int +LockModem() +{ + int res; + FILE *lockfile; + + if (*VarDevice != '/') + return 0; + + if ((res = uu_lock(VarBaseDevice)) != UU_LOCK_OK) { + if (res == UU_LOCK_INUSE) + LogPrintf(LogPHASE, "Modem %s is in use\n", VarDevice); + else + LogPrintf(LogPHASE, "Modem %s is in use: uu_lock: %s\n", + VarDevice, uu_lockerr(res)); + return (-1); + } + + snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, VarBaseDevice); + (void) unlink(fn); + + if ((lockfile = fopen(fn, "w")) != NULL) { + fprintf(lockfile, "tun%d\n", tunno); + fclose(lockfile); + } else + LogPrintf(LogALERT, "Warning: Can't create %s: %s\n", fn, strerror(errno)); + + return 0; +} + +void +UnlockModem() +{ + if (*VarDevice != '/') + return; + + snprintf(fn, sizeof fn, "%s%s.if", _PATH_VARRUN, VarBaseDevice); + if (unlink(fn) == -1) + LogPrintf(LogALERT, "Warning: Can't remove %s: %s\n", fn, strerror(errno)); + + if (uu_unlock(VarBaseDevice) == -1) + LogPrintf(LogALERT, "Warning: Can't uu_unlock %s\n", fn); +} + static struct termios modemios; int @@ -436,30 +485,33 @@ OpenModem(int mode) struct termios rstio; int oldflag; char *host, *cp, *port; - int res; if (modem >= 0) LogPrintf(LogDEBUG, "OpenModem: Modem is already open!\n"); /* We're going back into "term" mode */ else if (mode & MODE_DIRECT) { - LogPrintf(LogDEBUG, "OpenModem(direct): Modem is %sa tty\n", - isatty(0) ? "" : "not "); + if (isatty(0)) { + LogPrintf(LogDEBUG, "OpenModem(direct): Modem is a tty\n"); + cp = ttyname(0); + SetVariable(0, 1, &cp, VAR_DEVICE); + if (LockModem() == -1) { + close(0); + return -1; + } + } else { + LogPrintf(LogDEBUG, "OpenModem(direct): Modem is not a tty\n"); + SetVariable(0, 0, 0, VAR_DEVICE); + } return modem = 0; } else { if (strncmp(VarDevice, "/dev/", 5) == 0) { - if ((res = uu_lock(VarBaseDevice)) != UU_LOCK_OK) { - if (res == UU_LOCK_INUSE) - LogPrintf(LogPHASE, "Modem %s is in use\n", VarDevice); - else - LogPrintf(LogPHASE, "Modem %s is in use: uu_lock: %s\n", - VarDevice, uu_lockerr(res)); - return (-1); - } + if (LockModem() == -1) + return (-1); modem = open(VarDevice, O_RDWR | O_NONBLOCK); if (modem < 0) { LogPrintf(LogERROR, "OpenModem failed: %s: %s\n", VarDevice, strerror(errno)); - (void) uu_unlock(VarBaseDevice); + UnlockModem(); return (-1); } LogPrintf(LogDEBUG, "OpenModem: Modem is %s\n", VarDevice); @@ -535,8 +587,8 @@ OpenModem(int mode) if (ioctl(modem, TIOCMGET, &mbits)) { LogPrintf(LogERROR, "OpenModem: Cannot get modem status: %s\n", strerror(errno)); - close(modem); - return (modem = -1); + CloseModem(); + return (-1); } LogPrintf(LogDEBUG, "OpenModem: modem control = %o\n", mbits); @@ -544,8 +596,8 @@ OpenModem(int mode) if (oldflag < 0) { LogPrintf(LogERROR, "OpenModem: Cannot get modem flags: %s\n", strerror(errno)); - close(modem); - return (modem = -1); + CloseModem(); + return (-1); } (void) fcntl(modem, F_SETFL, oldflag & ~O_NONBLOCK); } @@ -653,10 +705,8 @@ HangupModem(int flag) DoChat(ScriptBuffer); tcflush(modem, TCIOFLUSH); UnrawModem(modem); - close(modem); + CloseModem(); } - modem = -1; /* Mark as modem has closed */ - (void) uu_unlock(VarBaseDevice); } else if (modem >= 0) { char ScriptBuffer[200]; @@ -678,9 +728,9 @@ CloseModem() { if (modem >= 0) { close(modem); + UnlockModem(); modem = -1; } - (void) uu_unlock(VarBaseDevice); } /* |