Blame SOURCES/shadow-4.2.1-null-tm.patch

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Index: shadow-4.5/src/faillog.c
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===================================================================
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--- shadow-4.5.orig/src/faillog.c
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+++ shadow-4.5/src/faillog.c
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@@ -163,10 +163,14 @@ static void print_one (/*@null@*/const s
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 	}
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 	tm = localtime (&fl.fail_time);
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+	if (tm == NULL) {
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+		cp = "(unknown)";
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+	} else {
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 #ifdef HAVE_STRFTIME
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-	strftime (ptime, sizeof (ptime), "%D %H:%M:%S %z", tm);
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-	cp = ptime;
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+		strftime (ptime, sizeof (ptime), "%D %H:%M:%S %z", tm);
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+		cp = ptime;
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 #endif
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+	}
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 	printf ("%-9s   %5d    %5d   ",
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 	        pw->pw_name, fl.fail_cnt, fl.fail_max);
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 	/* FIXME: cp is not defined ifndef HAVE_STRFTIME */
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Index: shadow-4.5/src/chage.c
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===================================================================
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--- shadow-4.5.orig/src/chage.c
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+++ shadow-4.5/src/chage.c
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@@ -168,6 +168,10 @@ static void date_to_str (char *buf, size
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 	struct tm *tp;
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 	tp = gmtime (&date);
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+	if (tp == NULL) {
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+		(void) snprintf (buf, maxsize, "(unknown)");
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+		return;
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+	}
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 #ifdef HAVE_STRFTIME
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 	(void) strftime (buf, maxsize, "%Y-%m-%d", tp);
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 #else
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Index: shadow-4.5/src/lastlog.c
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===================================================================
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--- shadow-4.5.orig/src/lastlog.c
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+++ shadow-4.5/src/lastlog.c
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@@ -158,13 +158,17 @@ static void print_one (/*@null@*/const s
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 	ll_time = ll.ll_time;
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 	tm = localtime (&ll_time);
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+	if (tm == NULL) {
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+		cp = "(unknown)";
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+	} else {
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 #ifdef HAVE_STRFTIME
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-	strftime (ptime, sizeof (ptime), "%a %b %e %H:%M:%S %z %Y", tm);
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-	cp = ptime;
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+		strftime (ptime, sizeof (ptime), "%a %b %e %H:%M:%S %z %Y", tm);
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+		cp = ptime;
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 #else
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-	cp = asctime (tm);
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-	cp[24] = '\0';
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+		cp = asctime (tm);
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+		cp[24] = '\0';
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 #endif
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+	}
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 	if (ll.ll_time == (time_t) 0) {
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 		cp = _("**Never logged in**\0");
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Index: shadow-4.5/src/passwd.c
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===================================================================
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--- shadow-4.5.orig/src/passwd.c
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+++ shadow-4.5/src/passwd.c
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@@ -455,6 +455,9 @@ static /*@observer@*/const char *date_to
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 	struct tm *tm;
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 	tm = gmtime (&t);
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+	if (tm == NULL) {
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+		return "(unknown)";
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+	}
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 #ifdef HAVE_STRFTIME
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 	(void) strftime (buf, sizeof buf, "%m/%d/%Y", tm);
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 #else				/* !HAVE_STRFTIME */
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Index: shadow-4.5/src/usermod.c
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===================================================================
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--- shadow-4.5.orig/src/usermod.c
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+++ shadow-4.5/src/usermod.c
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@@ -210,6 +210,10 @@ static void date_to_str (/*@unique@*//*@
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 	} else {
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 		time_t t = (time_t) date;
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 		tp = gmtime (&t);
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+		if (tp == NULL) {
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+			strncpy (buf, "unknown", maxsize);
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+			return;
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+		}
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 #ifdef HAVE_STRFTIME
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 		strftime (buf, maxsize, "%Y-%m-%d", tp);
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 #else