* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
-#define RCSID "$Id: options.c,v 1.74 2000/04/15 01:27:13 masputra Exp $"
+#define RCSID "$Id: options.c,v 1.76 2000/08/01 01:38:30 paulus Exp $"
#include <ctype.h>
#include <stdio.h>
int kdebugflag = 0; /* Tell kernel to print debug messages */
int default_device = 1; /* Using /dev/tty or equivalent */
char devnam[MAXPATHLEN]; /* Device name */
-int crtscts = 0; /* Use hardware flow control */
-bool modem = 1; /* Use modem control lines */
-int inspeed = 0; /* Input/Output speed requested */
u_int32_t netmask = 0; /* IP netmask to set on interface */
-bool lockflag = 0; /* Create lock file to lock the serial dev */
bool nodetach = 0; /* Don't detach from controlling tty */
bool updetach = 0; /* Detach once link is up */
-char *initializer = NULL; /* Script to initialize physical link */
-char *connect_script = NULL; /* Script to establish physical link */
-char *disconnect_script = NULL; /* Script to disestablish physical link */
-char *welcomer = NULL; /* Script to run after phys link estab. */
-char *ptycommand = NULL; /* Command to run on other side of pty */
int maxconnect = 0; /* Maximum connect time */
char user[MAXNAMELEN]; /* Username for PAP */
char passwd[MAXSECRETLEN]; /* Password for PAP */
int idle_time_limit = 0; /* Disconnect if idle for this many seconds */
int holdoff = 30; /* # seconds to pause before reconnecting */
bool holdoff_specified; /* true if a holdoff value has been given */
-bool notty = 0; /* Stdin/out is not a tty */
-char *pty_socket = NULL; /* Socket to connect to pty */
-char *record_file = NULL; /* File to record chars sent/received */
-int using_pty = 0;
-bool sync_serial = 0; /* Device is synchronous serial device */
int log_to_fd = 1; /* send log messages to this fd too */
int maxfail = 10; /* max # of unsuccessful connection attempts */
char linkname[MAXPATHLEN]; /* logical name for link */
bool tune_kernel; /* may alter kernel settings */
int connect_delay = 1000; /* wait this many ms after connect script */
-int max_data_rate; /* max bytes/sec through charshunt */
int req_unit = -1; /* requested interface unit */
bool multilink = 0; /* Enable multilink operation */
char *bundle_name = NULL; /* bundle name for multilink */
extern option_t auth_options[];
extern struct stat devstat;
-extern int prepass; /* Doing pre-pass to find device name */
struct option_info initializer_info;
struct option_info connect_script_info;
char *option_source; /* string saying where the option came from */
bool log_to_file; /* log_to_fd is a file opened by us */
bool log_to_specific_fd; /* log_to_fd was specified by user option */
+bool no_override; /* don't override previously-set options */
/*
* Prototypes
static int noopt __P((char **));
static int setdomain __P((char **));
static int setnetmask __P((char **));
-static int setxonxoff __P((char **));
static int readfile __P((char **));
static int callfile __P((char **));
static int showversion __P((char **));
"Set time in seconds before retrying connection" },
{ "idle", o_int, &idle_time_limit,
"Set time in seconds before disconnecting idle link" },
- { "lock", o_bool, &lockflag,
- "Lock serial device with UUCP-style lock file", 1 },
{ "-all", o_special_noarg, (void *)noopt,
"Don't request/allow any LCP or IPCP options (useless)" },
- { "init", o_string, &initializer,
- "A program to initialize the device",
- OPT_A2INFO | OPT_PRIVFIX, &initializer_info },
- { "connect", o_string, &connect_script,
- "A program to set up a connection",
- OPT_A2INFO | OPT_PRIVFIX, &connect_script_info },
- { "disconnect", o_string, &disconnect_script,
- "Program to disconnect serial device",
- OPT_A2INFO | OPT_PRIVFIX, &disconnect_script_info },
- { "welcome", o_string, &welcomer,
- "Script to welcome client",
- OPT_A2INFO | OPT_PRIVFIX, &welcomer_info },
- { "pty", o_string, &ptycommand,
- "Script to run on pseudo-tty master side",
- OPT_A2INFO | OPT_PRIVFIX | OPT_DEVNAM, &ptycommand_info },
- { "notty", o_bool, ¬ty,
- "Input/output is not a tty", OPT_DEVNAM | 1 },
- { "socket", o_string, &pty_socket,
- "Send and receive over socket, arg is host:port", OPT_DEVNAM },
- { "record", o_string, &record_file,
- "Record characters sent/received to file" },
{ "maxconnect", o_int, &maxconnect,
"Set connection time limit", OPT_LLIMIT|OPT_NOINCR|OPT_ZEROINF },
- { "crtscts", o_int, &crtscts,
- "Set hardware (RTS/CTS) flow control", OPT_NOARG|OPT_VAL(1) },
- { "nocrtscts", o_int, &crtscts,
- "Disable hardware flow control", OPT_NOARG|OPT_VAL(-1) },
- { "-crtscts", o_int, &crtscts,
- "Disable hardware flow control", OPT_NOARG|OPT_VAL(-1) },
- { "cdtrcts", o_int, &crtscts,
- "Set alternate hardware (DTR/CTS) flow control", OPT_NOARG|OPT_VAL(2) },
- { "nocdtrcts", o_int, &crtscts,
- "Disable hardware flow control", OPT_NOARG|OPT_VAL(-1) },
- { "xonxoff", o_special_noarg, (void *)setxonxoff,
- "Set software (XON/XOFF) flow control" },
{ "domain", o_special, (void *)setdomain,
"Add given domain name to hostname" },
{ "mtu", o_int, &lcp_allowoptions[0].mru,
"Set our MTU", OPT_LIMITS, NULL, MAXMRU, MINMRU },
{ "netmask", o_special, (void *)setnetmask,
"set netmask" },
- { "modem", o_bool, &modem,
- "Use modem control lines", 1 },
- { "local", o_bool, &modem,
- "Don't use modem control lines" },
{ "file", o_special, (void *)readfile,
"Take options from a file", OPT_PREPASS },
{ "call", o_special, (void *)callfile,
"Show brief listing of options" },
{ "-h", o_special_noarg, (void *)showhelp,
"Show brief listing of options" },
- { "sync", o_bool, &sync_serial,
- "Use synchronous HDLC serial encoding", 1 },
{ "logfd", o_int, &log_to_fd,
"Send log messages to this file descriptor",
0, &log_to_specific_fd },
"Don't alter kernel settings", 0 },
{ "connect-delay", o_int, &connect_delay,
"Maximum time (in ms) to wait after connect script finishes" },
- { "datarate", o_int, &max_data_rate,
- "Maximum data rate in bytes/sec (with pty, notty or record option)" },
{ "unit", o_int, &req_unit,
"PPP interface unit number to use if possible", OPT_LLIMIT, 0, 0 },
#ifdef HAVE_MULTILINK
/*
* parse_args - parse a string of arguments from the command line.
- * If prepass is true, we are scanning for the device name and only
- * processing a few options, so error messages are suppressed.
*/
int
parse_args(argc, argv)
*/
if ((ret = setdevname(arg)) == 0
&& (ret = setspeed(arg)) == 0
- && (ret = setipaddr(arg)) == 0
- && !prepass) {
+ && (ret = setipaddr(arg)) == 0) {
option_error("unrecognized option '%s'", arg);
usage();
return 0;
if (check_prot)
seteuid(0);
if (f == NULL) {
- if (!must_exist && err == ENOENT)
- return 1;
errno = err;
+ if (!must_exist) {
+ if (err != ENOENT && err != ENOTDIR)
+ warn("Warning: can't open options file %s: %m", filename);
+ return 1;
+ }
option_error("Can't open options file %s: %m", filename);
return 0;
}
argv[i] = args[i];
}
current_option = cmd;
- if ((opt->flags & OPT_DEVEQUIV) && devnam_fixed) {
+ if ((opt->flags & OPT_DEVEQUIV) && no_override) {
option_error("the %s option may not be used in the %s file",
cmd, filename);
goto err;
/*
* options_for_tty - See if an options file exists for the serial
* device, and if so, interpret options from it.
+ * We only allow the per-tty options file to override anything from
+ * the command line if it is something that the user can't override
+ * once it has been set by root.
*/
int
options_for_tty()
for (p = path + strlen(_PATH_TTYOPT); *p != 0; ++p)
if (*p == '/')
*p = '.';
+ no_override = 1;
ret = options_from_file(path, 0, 0, 1);
+ no_override = 0;
free(path);
return ret;
}
char *sv;
int (*parser) __P((char **));
- if ((opt->flags & OPT_PREPASS) == 0 && prepass)
- return 1;
+ if (no_override && (opt->flags & OPT_SEENIT)) {
+ struct option_info *ip = (struct option_info *) opt->addr2;
+ if (!(privileged && (opt->flags & OPT_PRIVFIX)))
+ return 1;
+ if (!ip || ip->priv)
+ return 1;
+ warn("%s option from per-tty file overrides command line", opt->name);
+ }
if ((opt->flags & OPT_INITONLY) && phase != PHASE_INITIALIZE) {
option_error("it's too late to use the %s option", opt->name);
return 0;
return 0;
}
}
+ opt->flags |= OPT_SEENIT;
switch (opt->type) {
case o_bool:
va_start(args);
fmt = va_arg(args, char *);
#endif
- if (prepass) {
- va_end(args);
- return;
- }
vslprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (phase == PHASE_INITIALIZE)
}
#ifdef PPP_FILTER
-/*
- * setpdebug - Set libpcap debugging level.
- */
-static int
-setpdebug(argv)
- char **argv;
-{
- return int_option(*argv, &dflag);
-}
-
/*
* setpassfilter - Set the pass filter for packets
*/
char *ptr;
int spd;
- if (prepass)
+ if (no_override && inspeed != 0)
return 1;
spd = strtol(arg, &ptr, 0);
if (ptr == arg || *ptr != 0 || spd == 0)
return 0;
- inspeed = spd;
+ if (!no_override || inspeed == 0)
+ inspeed = spd;
return 1;
}
if (phase != PHASE_INITIALIZE) {
option_error("device name cannot be changed after initialization");
return -1;
- } else if (devnam_fixed) {
+ }
+ if (no_override) {
option_error("per-tty options file may not specify device name");
return -1;
}
char *colon;
u_int32_t local, remote;
ipcp_options *wo = &ipcp_wantoptions[0];
-
+ static int seen_local = 0, seen_remote = 0;
+
/*
* IP address pair separated by ":".
*/
if ((colon = strchr(arg, ':')) == NULL)
return 0;
- if (prepass)
- return 1;
/*
* If colon first character, then no local addr.
*/
- if (colon != arg) {
+ if (colon != arg && !(no_override && seen_local)) {
*colon = '\0';
if ((local = inet_addr(arg)) == (u_int32_t) -1) {
if ((hp = gethostbyname(arg)) == NULL) {
if (local != 0)
wo->ouraddr = local;
*colon = ':';
+ seen_local = 1;
}
/*
* If colon last character, then no remote addr.
*/
- if (*++colon != '\0') {
+ if (*++colon != '\0' && !(no_override && seen_remote)) {
if ((remote = inet_addr(colon)) == (u_int32_t) -1) {
if ((hp = gethostbyname(colon)) == NULL) {
option_error("unknown host: %s", colon);
}
if (remote != 0)
wo->hisaddr = remote;
+ seen_remote = 1;
}
return 1;
return p - p0;
}
-static int
-setxonxoff(argv)
- char **argv;
-{
- lcp_wantoptions[0].asyncmap |= 0x000A0000; /* escape ^S and ^Q */
- lcp_wantoptions[0].neg_asyncmap = 1;
-
- crtscts = -2;
- return (1);
-}
-
static int
setlogfile(argv)
char **argv;
projects / ppp.git / blobdiff