Add a way to make it so that you don't need to input a password.

In /etc/sus, if you suffix the group ID with a "n", then it will not
ask for any password for users in that group.

Signed-off-by: Slendi <slendi@socopon.com>

1 files changed, 25 insertions, 5 deletions

diff --git a/sus.c b/sus.c
index 2c958d2..e87c42c 100644
--- a/sus.c
+++ b/sus.c
@@ -13,18 +13,37 @@
 
 #define MAX_IDS 100
 long long ids[MAX_IDS] = { 0 };
+char nopass[MAX_IDS] = { 0 };
 size_t ids_len = 0;
 
 read_ids()
 {
 	FILE *f = fopen("/etc/sus", "r");
 	if (!f) return 0;
-	while (!feof(f) && ids_len < 99)
+	while (!feof(f) && ids_len < 99) {
+		char ch;
 		fscanf(f, "%lld", &ids[ids_len++]);
+		if (!feof(f)) {
+			if ((ch = fgetc(f)) == 'n')
+				nopass[ids_len] = 1;
+			else
+				ungetc(ch, f);
+		}
+	}
 	if (ids_len == 0) return 0;
 	return 1;
 }
 
+uid_nopass(uid)
+{
+	int i;
+	for (i = 0; i < ids_len; i++) {
+		if (ids[i] == uid && nopass[i])
+			return 1;
+	}
+	return 0;
+}
+
 check_password(pass_buf)
 char *pass_buf;
 {
@@ -178,10 +197,11 @@ uid_t uid;
 		return -1;
 	}
 
-	if (ask_password() != 1) {
-		fputs("Too many attempts.\n", stderr);
-		return -1;
-	}
+	if (!uid_nopass(uid))
+		if (ask_password() != 1) {
+			fputs("Too many attempts.\n", stderr);
+			return -1;
+		}
 
 	sigaction(SIGALRM, &sa, NULL);
 	sigaction(SIGHUP,  &sa, NULL);