Now understand "host!login:" style prompts additionly.
Add -t to specify login script timeout. Add -w to specify retry wait time. Describe -p option. Now understand several -s sections (for several host phone numbers). Remove -F sw (software flow control), it is impossible with slip. Change -F hw (hardware flow control) option to -h as in slattach, we don't need option with argument for only one case. Call downscript on SIGTERM. Improve debug diagnostic. Allow startslip work with several slip lines without killing each other. Unlink pid file on exit. Skip \r and \0 in login script parsing instead making them \n. Use absolute path to default script (/sbin/ifconfig). Call up/down script in background to prevent hang on them.
This commit is contained in:
Andrey A. Chernov
parent
a032b44df6
commit
27861c636f
@ -41,11 +41,17 @@
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.Nm startslip
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.Op Fl d
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.Op Fl b Ar speed
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.Op Fl s Ar string
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[
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.Fl s Ar string1
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.Op Fl s Ar string2 Op Ar ...
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]
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.Op Fl h
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.Op Fl A Ar annexname
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.Op Fl F Ar flowcontrol
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.Op Fl U Ar upscript
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.Op Fl D Ar downscript
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.Op Fl p Ar father_pause
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.Op Fl t Ar script_timeout
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.Op Fl w Ar retry_pause
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.Ar device user passwd
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.Sh DESCRIPTION
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.Nm Startslip
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@ -59,11 +65,25 @@ attempts to login as the specified
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with the given
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.Ar password .
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If successful, it puts the device into the slip line discipline.
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If carrier drops and a
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If carrier drops or a
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.Dv SIGHUP
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is sent to
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.Nm startslip ,
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it closes the device and attempts to repeat the dialup and login sequence.
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it closes the device, calls
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.Ar downscript
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and attempts to repeat the dialup and login sequence.
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If a
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.Dv SIGTERM
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is send to
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.Nm startslip ,
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it closes the device, calls
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.Ar downscript
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and exits.
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When
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.Nm startslip
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called twice on the same device, previous copy killed by a
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.Dv SIGTERM
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before any operation.
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.Pp
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Available options:
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.Bl -tag -width Ar
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@ -73,13 +93,26 @@ prints out debugging information about what it is trying to do.
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.It Fl b Ar speed
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Determines the baud rate used for
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.Ar device .
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.It Fl s Ar string
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Default value is 9600.
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.It Fl t Ar script_timeout
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Set login script timeout in seconds, default value is 90.
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.It Fl w Ar retry_pause
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Set retry pause in seconds (increased from one try to another),
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default value is 60.
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.It Fl p Ar father_pause
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Set after fork father pause in seconds, default is no pause there.
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.It Fl s Ar string1
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The optional
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.Ar string
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is written to
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.Ar device .
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Return character is added automatically.
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For a dialup modem,
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the string is used to specify a dial sequence.
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Default string is return character.
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You can specify several
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.Fl s Ar stringN
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arguments to use with each try, f.e. several host phone numbers.
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.It Fl A Ar annexname
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.Nm Startslip
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assumes it is connecting to a Xylogics Annex box and engages in an
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@ -92,25 +125,25 @@ The
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.Ar annexname
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argument is a string that is used to match against the Annex prompt
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to determine when a connection has been established.
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.It Fl F Ar flowcontrol
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Determines the type of flow control used on
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.It Fl h
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Use hardware (CTS/RTS) flow control for
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.Ar device .
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Choices for
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.Ar flowcontrol
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are
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``none'' for no flow control (the default),
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``hw'' for hardware RTS/CTS flow control and
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``sw'' for software XON/XOFF flow control.
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Default value is no flow control.
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.It Fl U Ar upscript
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Specifies a script to run when a SLIP interface becomes connected. This may
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contain ifconfig, route, and other appropriate commands. The arguments that
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are passed to the script are "slX up".
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are passed to the script are "slX up". Default value is "/sbin/ifconfig".
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.It Fl D Ar downscript
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Specifies a script to run when a SLIP connection goes away. The arguments that
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are passed to the script are "slX down".
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are passed to the script are "slX down". Default value is "/sbin/ifconfig".
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.El
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.Sh FILES
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.Bl -tag -width /var/run/startslip-<device>.pid -compact
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.It Pa /var/run/startslip-<device>.pid
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pid stored here
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.Sh SEE ALSO
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.Xr sliplogin 8
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.Xr sliplogin 8 ,
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.Xr slattach 8
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.Sh HISTORY
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The
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.Nm startslip
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@ -55,7 +55,7 @@ static char sccsid[] = "@(#)startslip.c 8.1 (Berkeley) 6/5/93";
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <syslog.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <net/if_slvar.h>
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@ -71,15 +71,20 @@ static char sccsid[] = "@(#)startslip.c 8.1 (Berkeley) 6/5/93";
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#define DEFAULT_BAUD B9600
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int speed = DEFAULT_BAUD;
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#define FC_NONE 0 /* flow control: none */
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#define FC_SW 1 /* flow control: software (XON/XOFF) */
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#define FC_HW 2 /* flow control: hardware (RTS/CTS) */
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#define FC_HW 1 /* flow control: hardware (RTS/CTS) */
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int flowcontrol = FC_NONE;
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char *annex;
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int hup;
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int terminate;
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int logged_in = 0;
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int wait_time = 60; /* then back off */
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int script_timeout = 90; /* connect script default timeout */
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#define MAXTRIES 6 /* w/60 sec and doubling, takes an hour */
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#define PIDFILE "/var/run/startslip.pid"
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#define PIDFILE "/var/run/startslip-%s.pid"
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#define MAXDIALS 20
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char *dials[MAXDIALS];
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int diali, dialc;
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#ifdef DEBUG
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int debug = 1;
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@ -102,23 +107,24 @@ main(argc, argv)
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char *cp, **ap;
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int ch, disc;
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int fd = -1;
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void sighup();
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void sighup(), sigterm();
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FILE *wfd = NULL, *pfd;
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char *dialerstring = 0, buf[BUFSIZ];
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char pidfile[32];
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int unitnum;
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char unitname[32];
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char *devicename, *username, *password;
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char *upscript = NULL, *downscript = NULL;
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int first = 1, tries = 0;
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int pausefirst = 0;
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int pid;
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pid_t pid;
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#ifdef POSIX
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struct termios t;
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#else
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struct sgttyb sgtty;
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#endif
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while ((ch = getopt(argc, argv, "db:s:p:A:F:U:D:")) != EOF)
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while ((ch = getopt(argc, argv, "dhb:s:t:p:w:A:U:D:")) != EOF)
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switch (ch) {
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case 'd':
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debug = 1;
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@ -132,7 +138,18 @@ main(argc, argv)
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pausefirst = atoi(optarg);
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break;
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case 's':
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dialerstring = strdup(optarg);
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if (diali >= MAXDIALS) {
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(void)fprintf(stderr,
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"max dial strings number (%d) exceeded\n", MAXDIALS);
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exit(1);
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}
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dials[diali++] = strdup(optarg);
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break;
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case 't':
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script_timeout = atoi(optarg);
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break;
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case 'w':
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wait_time = atoi(optarg);
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break;
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case 'A':
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annex = strdup(optarg);
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@ -143,19 +160,9 @@ main(argc, argv)
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case 'D':
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downscript = strdup(optarg);
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break;
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case 'F':
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case 'h':
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#ifdef POSIX
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if (strcmp(optarg, "none") == 0)
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flowcontrol = FC_NONE;
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else if (strcmp(optarg, "sw") == 0)
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flowcontrol = FC_SW;
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else if (strcmp(optarg, "hw") == 0)
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flowcontrol = FC_HW;
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else {
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(void)fprintf(stderr,
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"flow control: none, sw, hw\n");
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exit(1);
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}
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flowcontrol = FC_HW;
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break;
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#else
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(void)fprintf(stderr, "flow control not supported\n");
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@ -187,7 +194,7 @@ main(argc, argv)
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for (cp = *ap; *cp != 0; cp++)
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*cp = '\0';
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openlog("startslip", LOG_PID, LOG_DAEMON);
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openlog("startslip", LOG_PID|LOG_PERROR, LOG_DAEMON);
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#if BSD <= 43
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if (debug == 0 && (fd = open("/dev/tty", 0)) >= 0) {
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@ -200,26 +207,44 @@ main(argc, argv)
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if (debug)
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setbuf(stdout, NULL);
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if (pfd = fopen(PIDFILE, "r")) {
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if ((cp = strrchr(devicename, '/')) == NULL)
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cp = devicename;
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else
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cp++;
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sprintf(pidfile, PIDFILE, cp);
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if ((pfd = fopen(pidfile, "r")) != NULL) {
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pid = 0;
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fscanf(pfd, "%d", &pid);
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fscanf(pfd, "%d\n", &pid);
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if (pid > 0)
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kill(pid, SIGUSR1);
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kill(pid, SIGTERM);
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fclose(pfd);
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}
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pfd = NULL; /* not remove pidfile yet */
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sleep(5); /* allow down script to be completed */
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} else
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restart:
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if (logged_in) {
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sprintf(buf, "%s %s down", downscript ? downscript : "ifconfig" , unitname);
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sprintf(buf, "%s %s down &", downscript ? downscript : "/sbin/ifconfig" , unitname);
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(void) system(buf);
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}
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if (terminate) {
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if (pfd)
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unlink(pidfile);
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exit(0);
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}
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logged_in = 0;
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if (++tries > MAXTRIES) {
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syslog(LOG_ERR, "exiting after %d tries\n", tries);
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syslog(LOG_ERR, "exiting login after %d tries\n", tries);
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/* ???
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if (first)
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*/
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{
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if (pfd)
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unlink(pidfile);
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exit(1);
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}
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}
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if (diali > 0)
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dialerstring = dials[dialc++ % diali];
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/*
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* We may get a HUP below, when the parent (session leader/
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@ -237,11 +262,11 @@ main(argc, argv)
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pausefirst = 0;
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#ifdef POSIX
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if (setsid() == -1)
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perror("setsid");
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syslog(LOG_ERR, "setsid: %m");
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#endif
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pid = getpid();
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printd("restart: pid %d: ", pid);
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if (pfd = fopen(PIDFILE, "w")) {
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if (pfd = fopen(pidfile, "w")) {
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fprintf(pfd, "%d\n", pid);
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fclose(pfd);
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}
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@ -257,11 +282,12 @@ main(argc, argv)
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}
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printd("open");
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if ((fd = open(devicename, O_RDWR)) < 0) {
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perror(devicename);
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syslog(LOG_ERR, "open %s: %m\n", devicename);
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if (first)
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if (first) {
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if (pfd)
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unlink(pidfile);
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exit(1);
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else {
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} else {
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syslog(LOG_INFO, "sleeping %d seconds (%d tries).\n", wait_time * tries, tries);
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sleep(wait_time * tries);
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goto restart;
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@ -270,25 +296,26 @@ main(argc, argv)
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printd(" %d", fd);
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#ifdef TIOCSCTTY
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if (ioctl(fd, TIOCSCTTY, 0) < 0)
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perror("ioctl (TIOCSCTTY)");
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syslog(LOG_ERR, "ioctl (TIOCSCTTY): %m");
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#endif
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signal(SIGHUP, sighup);
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signal(SIGTERM, sigterm);
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if (debug) {
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if (ioctl(fd, TIOCGETD, &disc) < 0)
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perror("ioctl(TIOCSETD)");
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printf(" (disc was %d)", disc);
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syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
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printd(" (disc was %d)", disc);
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}
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disc = TTYDISC;
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if (ioctl(fd, TIOCSETD, &disc) < 0) {
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perror("ioctl(TIOCSETD)");
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syslog(LOG_ERR, "%s: ioctl (TIOCSETD 0): %m\n",
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devicename);
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}
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printd(", ioctl");
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#ifdef POSIX
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if (tcgetattr(fd, &t) < 0) {
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perror("tcgetattr");
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syslog(LOG_ERR, "%s: tcgetattr: %m\n", devicename);
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if (pfd)
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unlink(pidfile);
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exit(2);
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}
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cfmakeraw(&t);
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@ -296,21 +323,18 @@ main(argc, argv)
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case FC_HW:
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t.c_cflag |= (CRTS_IFLOW|CCTS_OFLOW);
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break;
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case FC_SW:
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t.c_iflag |= (IXON|IXOFF);
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break;
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case FC_NONE:
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t.c_cflag &= ~(CRTS_IFLOW|CCTS_OFLOW);
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t.c_iflag &= ~(IXON|IXOFF);
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break;
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}
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cfsetspeed(&t, speed);
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if (tcsetattr(fd, TCSAFLUSH, &t) < 0) {
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perror("tcsetattr");
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syslog(LOG_ERR, "%s: tcsetattr: %m\n", devicename);
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if (first)
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if (first) {
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if (pfd)
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unlink(pidfile);
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exit(2);
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else {
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} else {
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syslog(LOG_INFO, "sleeping %d seconds (%d tries).\n", wait_time * tries, tries);
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sleep(wait_time * tries);
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goto restart;
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@ -318,21 +342,23 @@ main(argc, argv)
|
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}
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#else
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if (ioctl(fd, TIOCGETP, &sgtty) < 0) {
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perror("ioctl (TIOCGETP)");
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syslog(LOG_ERR, "%s: ioctl (TIOCGETP): %m\n",
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devicename);
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if (pfd)
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unlink(pidfile);
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exit(2);
|
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}
|
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sgtty.sg_flags = RAW | ANYP;
|
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sgtty.sg_erase = sgtty.sg_kill = 0377;
|
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sgtty.sg_ispeed = sgtty.sg_ospeed = speed;
|
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if (ioctl(fd, TIOCSETP, &sgtty) < 0) {
|
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perror("ioctl (TIOCSETP)");
|
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syslog(LOG_ERR, "%s: ioctl (TIOCSETP): %m\n",
|
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devicename);
|
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if (first)
|
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if (first) {
|
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if (pfd)
|
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unlink(pidfile);
|
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exit(2);
|
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else {
|
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} else {
|
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syslog(LOG_INFO, "sleeping %d seconds (%d tries).\n", wait_time * tries, tries);
|
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sleep(wait_time * tries);
|
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goto restart;
|
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@ -340,20 +366,24 @@ main(argc, argv)
|
||||
}
|
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#endif
|
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sleep(2); /* wait for flakey line to settle */
|
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if (hup)
|
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if (hup || terminate)
|
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goto restart;
|
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|
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wfd = fdopen(fd, "w+");
|
||||
if (wfd == NULL) {
|
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syslog(LOG_ERR, "can't fdopen slip line\n");
|
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if (pfd)
|
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unlink(pidfile);
|
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exit(10);
|
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}
|
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setbuf(wfd, (char *)0);
|
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if (dialerstring) {
|
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printd(", send dialstring");
|
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printd(", send dialstring: %s\\r", dialerstring);
|
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fprintf(wfd, "%s\r", dialerstring);
|
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} else
|
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} else {
|
||||
printd(", send \\r");
|
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putc('\r', wfd);
|
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}
|
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printd("\n");
|
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|
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/*
|
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@ -361,9 +391,11 @@ main(argc, argv)
|
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*/
|
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printd("look for login: ");
|
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for (;;) {
|
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if (getline(buf, BUFSIZ, fd, 90) == 0 || hup) {
|
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syslog(LOG_INFO, "sleeping %d seconds (%d tries).\n", wait_time * tries, tries);
|
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sleep(wait_time * tries);
|
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if (getline(buf, BUFSIZ, fd, script_timeout) == 0 || hup || terminate) {
|
||||
if (!terminate) {
|
||||
syslog(LOG_INFO, "sleeping %d seconds (%d tries).\n", wait_time * tries, tries);
|
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sleep(wait_time * tries);
|
||||
}
|
||||
goto restart;
|
||||
}
|
||||
if (annex) {
|
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@ -383,12 +415,12 @@ main(argc, argv)
|
||||
break;
|
||||
}
|
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} else {
|
||||
if (bcmp(&buf[1], "ogin:", 5) == 0) {
|
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if (strstr(&buf[1], "ogin:") != NULL) {
|
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fprintf(wfd, "%s\r", username);
|
||||
printd("Sent login: %s\n", username);
|
||||
continue;
|
||||
}
|
||||
if (bcmp(&buf[1], "assword:", 8) == 0) {
|
||||
if (strstr(&buf[1], "assword:") != NULL) {
|
||||
fprintf(wfd, "%s\r", password);
|
||||
printd("Sent password: %s\n", password);
|
||||
break;
|
||||
@ -402,14 +434,16 @@ main(argc, argv)
|
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printd("setd");
|
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disc = SLIPDISC;
|
||||
if (ioctl(fd, TIOCSETD, &disc) < 0) {
|
||||
perror("ioctl(TIOCSETD)");
|
||||
syslog(LOG_ERR, "%s: ioctl (TIOCSETD SLIP): %m\n",
|
||||
devicename);
|
||||
if (pfd)
|
||||
unlink(pidfile);
|
||||
exit(1);
|
||||
}
|
||||
if (ioctl(fd, SLIOCGUNIT, (caddr_t)&unitnum) < 0) {
|
||||
perror("ioctl(SLIOCGUNIT)");
|
||||
syslog(LOG_ERR, "ioctl(SLIOCGUNIT): %m");
|
||||
if (pfd)
|
||||
unlink(pidfile);
|
||||
exit(1);
|
||||
}
|
||||
sprintf(unitname, "sl%d", unitnum);
|
||||
@ -422,7 +456,7 @@ main(argc, argv)
|
||||
(void) dup2(0, 2);
|
||||
}
|
||||
|
||||
sprintf(buf, "%s %s up", upscript ? upscript : "ifconfig" , unitname);
|
||||
sprintf(buf, "%s %s up &", upscript ? upscript : "/sbin/ifconfig" , unitname);
|
||||
(void) system(buf);
|
||||
|
||||
printd(", ready\n");
|
||||
@ -431,7 +465,7 @@ main(argc, argv)
|
||||
first = 0;
|
||||
tries = 0;
|
||||
logged_in = 1;
|
||||
while (hup == 0) {
|
||||
while (hup == 0 && terminate == 0) {
|
||||
sigpause(0L);
|
||||
printd("sigpause return\n");
|
||||
}
|
||||
@ -448,6 +482,16 @@ sighup()
|
||||
hup = 1;
|
||||
}
|
||||
|
||||
void
|
||||
sigterm()
|
||||
{
|
||||
|
||||
printd("terminate\n");
|
||||
if (terminate == 0 && logged_in)
|
||||
syslog(LOG_INFO, "terminate signal\n");
|
||||
terminate = 1;
|
||||
}
|
||||
|
||||
getline(buf, size, fd, timeout)
|
||||
char *buf;
|
||||
int size, fd, timeout;
|
||||
@ -459,7 +503,7 @@ getline(buf, size, fd, timeout)
|
||||
|
||||
size--;
|
||||
for (i = 0; i < size; i++) {
|
||||
if (hup)
|
||||
if (hup || terminate)
|
||||
return (0);
|
||||
FD_ZERO(&readfds);
|
||||
FD_SET(fd, &readfds);
|
||||
@ -467,7 +511,7 @@ getline(buf, size, fd, timeout)
|
||||
tv.tv_usec = 0;
|
||||
if ((ret = select(fd + 1, &readfds, NULL, NULL, &tv)) < 0) {
|
||||
if (errno != EINTR)
|
||||
perror("getline: select");
|
||||
syslog(LOG_ERR, "getline: select: %m");
|
||||
} else {
|
||||
if (! ret) {
|
||||
printd("getline: timed out\n");
|
||||
@ -475,21 +519,23 @@ getline(buf, size, fd, timeout)
|
||||
}
|
||||
if ((ret = read(fd, &buf[i], 1)) == 1) {
|
||||
buf[i] &= 0177;
|
||||
if (buf[i] == '\r' || buf[i] == '\0')
|
||||
buf[i] = '\n';
|
||||
if (buf[i] == '\r' || buf[i] == '\0') {
|
||||
i--;
|
||||
continue;
|
||||
}
|
||||
if (buf[i] != '\n' && buf[i] != ':')
|
||||
continue;
|
||||
buf[i + 1] = '\0';
|
||||
printd("Got %d: \"%s\"\n", i + 1, buf);
|
||||
printd("Got %d: %s", i + 1, buf);
|
||||
return (i+1);
|
||||
}
|
||||
if (ret <= 0) {
|
||||
if (ret < 0) {
|
||||
perror("getline: read");
|
||||
syslog(LOG_ERR, "getline: read: %m");
|
||||
} else
|
||||
fprintf(stderr, "read returned 0\n");
|
||||
syslog(LOG_ERR, "read returned 0");
|
||||
buf[i] = '\0';
|
||||
printd("returning 0 after %d: \"%s\"\n", i, buf);
|
||||
printd("returning %d after %d: %s\n", ret, i, buf);
|
||||
return (0);
|
||||
}
|
||||
}
|
||||
@ -499,7 +545,9 @@ getline(buf, size, fd, timeout)
|
||||
|
||||
usage()
|
||||
{
|
||||
(void)fprintf(stderr,
|
||||
"usage: startslip [-d] [-b speed] [-s string] [-A annexname] [-F flowcontrol] [-U upscript] [-D downscript] dev user passwd\n");
|
||||
(void)fprintf(stderr, "\
|
||||
usage: startslip [-d] [-b speed] [-s string1 [-s string2 [...]]] [-A annexname]\n\
|
||||
[-h] [-U upscript] [-D downscript] [-t script_timeout]\n\
|
||||
[-w retry_pause] [-p father_pause] device user passwd\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user