1 files changed, 34 insertions, 0 deletions
diff --git a/login-utils/islocal.c b/login-utils/islocal.c
new file mode 100644
index 000000000..a4cfb16ab
--- /dev/null
+++ b/login-utils/islocal.c
@@ -0,0 +1,34 @@
+/* islocal.c - returns true if user is registered in the local
+   /etc/passwd file. Written by Alvaro Martinez Echevarria, 
+   alvaro@enano.etsit.upm.es, to allow peaceful coexistence with yp. Nov 94.
+   Hacked a bit by poe@daimi.aau.dk
+   See also ftp://ftp.daimi.aau.dk/pub/linux/poe/admutil*
+*/
+
+#include <stdio.h>
+#include <string.h>
+
+#define MAX_LENGTH	1024
+
+int
+is_local(char *user)
+{
+	FILE *fd;
+	char line[MAX_LENGTH];
+	int local = 0;
+
+        if(!(fd = fopen("/etc/passwd", "r"))) {
+                puts("Can't read /etc/passwd, exiting.");
+                exit(1);
+        }
+
+        while(fgets(line, MAX_LENGTH, fd) > 0) {
+                if(!strncmp(line, user, strlen(user))) {
+			local = 1;
+			break;
+                }
+	}
+	fclose(fd);
+	return local;
+}
+