From cf59e5bb35be4ad206f55b8cbacca803ec5284fc Mon Sep 17 00:00:00 2001
From: Johannes Findeisen <you@hanez.org>
Date: Sat, 10 Aug 2024 15:29:58 +0200
Subject: [PATCH] Removed old interactive version og checkpw.

---
 checkpw_interactive.c | 97 -------------------------------------------
 1 file changed, 97 deletions(-)
 delete mode 100644 checkpw_interactive.c

diff --git a/checkpw_interactive.c b/checkpw_interactive.c
deleted file mode 100644
index 273770d..0000000
--- a/checkpw_interactive.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * checkpw is a program that checks the validity of a users password on a
- * Linux/PAM-based system.
- *
- * Usage: checkpw
- *
- * Returns 0 on success, 1 otherwise.
- *
- * License: MIT (see LICENSE)
- */
-
-#include <security/pam_appl.h>
-#include <security/pam_misc.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-// Custom data structure to hold user-entered password
-struct pam_credentials {
-    const char *password;
-};
-
-// PAM conversation function to supply the password
-int pam_conversation(int num_msg, const struct pam_message **msg,
-                     struct pam_response **resp, void *appdata_ptr) {
-    struct pam_response *response = NULL;
-    struct pam_credentials *credentials = (struct pam_credentials *)appdata_ptr;
-    int i;
-
-    response = (struct pam_response *)malloc(sizeof(struct pam_response) * num_msg);
-    if (response == NULL) {
-        return PAM_CONV_ERR;
-    }
-
-    for (i = 0; i < num_msg; i++) {
-        if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF || msg[i]->msg_style == PAM_PROMPT_ECHO_ON) {
-            response[i].resp = strdup(credentials->password);
-            response[i].resp_retcode = 0;
-        }
-    }
-
-    *resp = response;
-    return PAM_SUCCESS;
-}
-
-int authenticate(const char *username, const char *password) {
-    pam_handle_t *pamh = NULL;
-    int retval;
-    struct pam_credentials credentials = { password };
-    struct pam_conv conv = { pam_conversation, &credentials };
-
-    retval = pam_start("login", username, &conv, &pamh);
-
-    if (retval == PAM_SUCCESS) {
-        retval = pam_authenticate(pamh, 0); // Attempt to authenticate
-    }
-
-    if (retval == PAM_SUCCESS) {
-        retval = pam_acct_mgmt(pamh, 0); // Check account validity
-    }
-
-    if (pam_end(pamh, retval) != PAM_SUCCESS) {
-        pamh = NULL;
-        fprintf(stderr, "Failed to release PAM authenticator\n");
-        exit(1);
-    }
-
-    return (retval == PAM_SUCCESS ? 0 : 1); // 0 for success, 1 for failure
-}
-
-int main() {
-    char username[256];
-    char *password;
-
-    // Prompt user for a username
-    printf("Username: ");
-    if (fgets(username, sizeof(username), stdin) == NULL) {
-        fprintf(stderr, "Failed to read username\n");
-        exit(1);
-    }
-
-    // Remove the trailing newline character if it exists
-    username[strcspn(username, "\n")] = '\0';
-
-    // Prompt user for a password
-    password = getpass("Password: ");
-
-    // Authenticate the user
-    if (authenticate(username, password) == 0) {
-        printf("Authenticated successfully.\n");
-        return 0;
-    } else {
-        printf("Authentication failed.\n");
-        return 1;
-    }
-}
-