*/
#ifndef lint
-static char rcsid[] = "$Id: main.c,v 1.42 1997/07/14 03:53:25 paulus Exp $";
+static char rcsid[] = "$Id: main.c,v 1.45 1998/03/25 01:28:14 paulus Exp $";
#endif
#include <stdio.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/socket.h>
-#include <net/if.h>
#include "pppd.h"
#include "magic.h"
#endif
/* interface vars */
-char ifname[IFNAMSIZ]; /* Interface name */
+char ifname[32]; /* Interface name */
int ifunit; /* Interface unit number */
char *progname; /* Name of this program */
int open_ccp_flag;
int redirect_stderr; /* Connector's stderr should go to file */
+char **script_env; /* Env. variable values for scripts */
+int s_env_nalloc; /* # words avail at script_env */
+
u_char outpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for outgoing packet */
u_char inpacket_buf[PPP_MRU+PPP_HDRLEN]; /* buffer for incoming packet */
int argc;
char *argv[];
{
- int i, nonblock, fdflags;
+ int i, fdflags;
struct sigaction sa;
FILE *pidfile;
char *p;
sigset_t mask;
struct protent *protp;
struct stat statbuf;
+ char numbuf[16];
phase = PHASE_INITIALIZE;
p = ttyname(0);
strcpy(devnam, p);
strcpy(default_devnam, devnam);
+ script_env = NULL;
+
/* Initialize syslog facilities */
#ifdef ULTRIX
openlog("pppd", LOG_PID);
uid = getuid();
privileged = uid == 0;
+ sprintf(numbuf, "%d", uid);
+ script_setenv("UID", numbuf);
/*
* Initialize to the standard option set, then parse, in order,
*/
for (i = 0; (protp = protocols[i]) != NULL; ++i)
(*protp->init)(0);
-
+
progname = *argv;
if (!options_from_file(_PATH_SYSOPTIONS, !privileged, 0, 1)
exit(1);
}
+ script_setenv("DEVICE", devnam);
+ sprintf(numbuf, "%d", baud_rate);
+ script_setenv("SPEED", numbuf);
+
/*
* If the user has specified the default device name explicitly,
* pretend they hadn't.
syslog(LOG_INFO, "Using interface ppp%d", ifunit);
(void) sprintf(ifname, "ppp%d", ifunit);
+ script_setenv("IFNAME", ifname);
/* write pid to file */
(void) sprintf(pidfilename, "%s%s.pid", _PATH_VARRUN, ifname);
} else
tty_mode = statbuf.st_mode;
- /*
- * Set line speed, flow control, etc.
- * Previously, if we had a connection script, we would set CLOCAL
- * while the script was running. But then, if CD was negated
- * before the script finished, we would miss it.
- */
- set_up_tty(ttyfd, 0);
-
/* run connection script */
if (connector && connector[0]) {
MAINDEBUG((LOG_INFO, "Connecting with <%s>", connector));
+ /*
+ * Set line speed, flow control, etc.
+ * On most systems we set CLOCAL for now so that we can talk
+ * to the modem before carrier comes up. But this has the
+ * side effect that we might miss it if CD drops before we
+ * get to clear CLOCAL below. On systems where we can talk
+ * successfully to the modem with CLOCAL clear and CD down,
+ * we can clear CLOCAL at this point.
+ */
+ set_up_tty(ttyfd, 1);
+
/* drop dtr to hang up in case modem is off hook */
if (!default_device && modem) {
setdtr(ttyfd, FALSE);
goto fail;
}
+
syslog(LOG_INFO, "Serial connection established.");
sleep(1); /* give it time to set up its terminal */
}
+ /* set line speed, flow control, etc.; clear CLOCAL if modem option */
+ set_up_tty(ttyfd, 0);
+
/* reopen tty if necessary to wait for carrier */
if (connector == NULL && modem) {
while ((i = open(devnam, O_RDWR)) < 0) {
syslog(LOG_INFO, "Using interface ppp%d", ifunit);
(void) sprintf(ifname, "ppp%d", ifunit);
-
+ script_setenv("IFNAME", ifname);
+
/* write pid to file */
(void) sprintf(pidfilename, "%s%s.pid", _PATH_VARRUN, ifname);
if ((pidfile = fopen(pidfilename, "w")) != NULL) {
}
if (!persist)
- break;
+ die(1);
if (demand)
demand_discard();
}
if (redirect_stderr) {
close(2);
- errfd = open(_PATH_CONNERRS, O_WRONLY | O_APPEND | O_CREAT, 0644);
+ errfd = open(_PATH_CONNERRS, O_WRONLY | O_APPEND | O_CREAT, 0600);
if (errfd >= 0 && errfd != 2) {
dup2(errfd, 2);
close(errfd);
int must_exist;
{
int pid;
- char *nullenv[1];
pid = fork();
if (pid == -1) {
/* SysV recommends a second fork at this point. */
/* run the program; give it a null environment */
- nullenv[0] = NULL;
- execve(prog, args, nullenv);
+ execve(prog, args, script_env);
if (must_exist || errno != ENOENT)
syslog(LOG_WARNING, "Can't execute %s: %m", prog);
_exit(-1);
*buf = 0;
return buf - buf0;
}
+
+/*
+ * script_setenv - set an environment variable value to be used
+ * for scripts that we run (e.g. ip-up, auth-up, etc.)
+ */
+void
+script_setenv(var, value)
+ char *var, *value;
+{
+ int vl = strlen(var);
+ int i;
+ char *p, *newstring;
+
+ newstring = (char *) malloc(vl + strlen(value) + 2);
+ if (newstring == 0)
+ return;
+ strcpy(newstring, var);
+ newstring[vl] = '=';
+ strcpy(newstring+vl+1, value);
+
+ /* check if this variable is already set */
+ if (script_env != 0) {
+ for (i = 0; (p = script_env[i]) != 0; ++i) {
+ if (strncmp(p, var, vl) == 0 && p[vl] == '=') {
+ free(p);
+ script_env[i] = newstring;
+ return;
+ }
+ }
+ } else {
+ i = 0;
+ script_env = (char **) malloc(16 * sizeof(char *));
+ if (script_env == 0)
+ return;
+ s_env_nalloc = 16;
+ }
+
+ /* reallocate script_env with more space if needed */
+ if (i + 1 >= s_env_nalloc) {
+ int new_n = i + 17;
+ char **newenv = (char **) realloc((void *)script_env,
+ new_n * sizeof(char *));
+ if (newenv == 0)
+ return;
+ script_env = newenv;
+ s_env_nalloc = new_n;
+ }
+
+ script_env[i] = newstring;
+ script_env[i+1] = 0;
+}
+
+/*
+ * script_unsetenv - remove a variable from the environment
+ * for scripts.
+ */
+void
+script_unsetenv(var)
+ char *var;
+{
+ int vl = strlen(var);
+ int i;
+ char *p;
+
+ if (script_env == 0)
+ return;
+ for (i = 0; (p = script_env[i]) != 0; ++i) {
+ if (strncmp(p, var, vl) == 0 && p[vl] == '=') {
+ free(p);
+ while ((script_env[i] = script_env[i+1]) != 0)
+ ++i;
+ break;
+ }
+ }
+}
projects / ppp.git / blobdiff