Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,46 @@
+/* su -- become super-user */
+
+char	password[100];
+char	pwbuf[100];
+int	ttybuf[3];
+main()
+{
+	register char *p, *q;
+	extern fin;
+
+	if(getpw(0, pwbuf))
+		goto badpw;
+	(&fin)[1] = 0;
+	p = pwbuf;
+	while(*p != ':')
+		if(*p++ == '\0')
+			goto badpw;
+	if(*++p == ':')
+		goto ok;
+	gtty(0, ttybuf);
+	ttybuf[2] =& ~010;
+	stty(0, ttybuf);
+	printf("password: ");
+	q = password;
+	while((*q = getchar()) != '\n')
+		if(*q++ == '\0')
+			return;
+	*q = '\0';
+	ttybuf[2] =| 010;
+	stty(0, ttybuf);
+	printf("\n");
+	q = crypt(password);
+	while(*q++ == *p++);
+	if(*--q == '\0' && *--p == ':')
+		goto ok;
+	goto error;
+
+badpw:
+	printf("bad password file\n");
+ok:
+	setuid(0);
+	execl("/bin/sh", "-", 0);
+	printf("cannot execute shell\n");
+error:
+	printf("sorry\n");
+}