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			82 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			82 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
--- a/pppd/main.c
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+++ b/pppd/main.c
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@@ -90,6 +90,7 @@
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 #include <sys/socket.h>
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 #include <netinet/in.h>
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 #include <arpa/inet.h>
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+#include <sys/sysinfo.h>
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 #include "pppd.h"
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 #include "magic.h"
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@@ -227,6 +228,7 @@ static struct subprocess *children;
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 /* Prototypes for procedures local to this file. */
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+static void check_time(void);
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 static void setup_signals __P((void));
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 static void create_pidfile __P((int pid));
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 static void create_linkpidfile __P((int pid));
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@@ -532,6 +534,7 @@ main(argc, argv)
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 	    info("Starting link");
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 	}
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+	check_time();
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 	gettimeofday(&start_time, NULL);
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 	script_unsetenv("CONNECT_TIME");
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 	script_unsetenv("BYTES_SENT");
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@@ -1264,6 +1267,36 @@ struct	callout {
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 static struct callout *callout = NULL;	/* Callout list */
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 static struct timeval timenow;		/* Current time */
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+static long uptime_diff = 0;
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+static int uptime_diff_set = 0;
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+
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+static void check_time(void)
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+{
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+	long new_diff;
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+	struct timeval t;
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+	struct sysinfo i;
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+    struct callout *p;
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+	
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+	gettimeofday(&t, NULL);
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+	sysinfo(&i);
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+	new_diff = t.tv_sec - i.uptime;
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+	
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+	if (!uptime_diff_set) {
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+		uptime_diff = new_diff;
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+		uptime_diff_set = 1;
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+		return;
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+	}
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+
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+	if ((new_diff - 5 > uptime_diff) || (new_diff + 5 < uptime_diff)) {
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+		/* system time has changed, update counters and timeouts */
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+		info("System time change detected.");
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+		start_time.tv_sec += new_diff - uptime_diff;
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+		
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+    	for (p = callout; p != NULL; p = p->c_next)
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+			p->c_time.tv_sec += new_diff - uptime_diff;
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+	}
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+	uptime_diff = new_diff;
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+}
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 /*
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  * timeout - Schedule a timeout.
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@@ -1334,6 +1367,8 @@ calltimeout()
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 {
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     struct callout *p;
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+	check_time();
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+	
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     while (callout != NULL) {
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 	p = callout;
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@@ -1361,6 +1396,8 @@ timeleft(tvp)
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 {
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     if (callout == NULL)
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 	return NULL;
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+	
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+	check_time();
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     gettimeofday(&timenow, NULL);
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     tvp->tv_sec = callout->c_time.tv_sec - timenow.tv_sec;
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