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#include "astal-auth.h"
#include <getopt.h>
#include <stdio.h>
#include <termios.h>
GMainLoop *loop;
static void cleanup_and_quit(AstalAuthPam *pam, int status) {
g_object_unref(pam);
g_main_loop_quit(loop);
exit(status);
}
static char *read_secret(const char *msg, gboolean echo) {
struct termios oldt, newt;
char *password = NULL;
size_t size = 0;
ssize_t len;
if (tcgetattr(STDIN_FILENO, &oldt) != 0) {
return NULL;
}
newt = oldt;
if (echo) {
newt.c_lflag |= ECHO;
} else {
newt.c_lflag &= ~(ECHO);
}
if (tcsetattr(STDIN_FILENO, TCSANOW, &newt) != 0) {
return NULL;
}
g_print("%s", msg);
if ((len = getline(&password, &size, stdin)) == -1) {
g_free(password);
return NULL;
}
if (password[len - 1] == '\n') {
password[len - 1] = '\0';
}
printf("\n");
if (tcsetattr(STDIN_FILENO, TCSANOW, &oldt) != 0) {
return NULL;
}
return password;
}
static void authenticate(AstalAuthPam *pam) {
static int attempts = 0;
if (attempts >= 3) {
g_print("%d failed attempts.\n", attempts);
cleanup_and_quit(pam, EXIT_FAILURE);
}
if (!astal_auth_pam_start_authenticate(pam)) {
g_print("could not start authentication process\n");
cleanup_and_quit(pam, EXIT_FAILURE);
}
attempts++;
}
static void on_visible(AstalAuthPam *pam, const gchar *data) {
char *secret = read_secret(data, TRUE);
if (secret == NULL) cleanup_and_quit(pam, EXIT_FAILURE);
astal_auth_pam_supply_secret(pam, secret);
g_free(secret);
}
static void on_hidden(AstalAuthPam *pam, const gchar *data, gchar *secret) {
if (!secret) secret = read_secret(data, FALSE);
if (secret == NULL) cleanup_and_quit(pam, EXIT_FAILURE);
astal_auth_pam_supply_secret(pam, secret);
g_free(secret);
}
static void on_info(AstalAuthPam *pam, const gchar *data) {
g_print("info: %s\n", data);
astal_auth_pam_supply_secret(pam, NULL);
}
static void on_error(AstalAuthPam *pam, const gchar *data) {
g_print("error: %s\n", data);
astal_auth_pam_supply_secret(pam, NULL);
}
static void on_success(AstalAuthPam *pam) {
g_print("Authentication successful\n");
cleanup_and_quit(pam, EXIT_SUCCESS);
}
static void on_fail(AstalAuthPam *pam, const gchar *data, gboolean retry) {
g_print("%s\n", data);
if (retry)
authenticate(pam);
else
cleanup_and_quit(pam, EXIT_FAILURE);
}
int main(int argc, char **argv) {
char *password = NULL;
char *username = NULL;
char *service = NULL;
int opt;
const char *optstring = "p:u:s:";
static struct option long_options[] = {{"password", required_argument, NULL, 'p'},
{"username", required_argument, NULL, 'u'},
{"service", required_argument, NULL, 's'},
{NULL, 0, NULL, 0}};
while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
switch (opt) {
case 'p':
password = optarg;
break;
case 'u':
username = optarg;
break;
case 's':
service = optarg;
break;
default:
g_print("Usage: %s [-p password] [-u username] [-s service]\n", argv[0]);
exit(EXIT_FAILURE);
}
}
loop = g_main_loop_new(NULL, FALSE);
AstalAuthPam *pam = g_object_new(ASTAL_AUTH_TYPE_PAM, NULL);
if (username) astal_auth_pam_set_username(pam, username);
if (service) astal_auth_pam_set_service(pam, service);
if (password) {
g_signal_connect(pam, "fail", G_CALLBACK(on_fail), (void *)FALSE);
} else {
g_signal_connect(pam, "auth-prompt-visible", G_CALLBACK(on_visible), NULL);
g_signal_connect(pam, "auth-info", G_CALLBACK(on_info), NULL);
g_signal_connect(pam, "auth-error", G_CALLBACK(on_error), NULL);
g_signal_connect(pam, "fail", G_CALLBACK(on_fail), (void *)TRUE);
}
g_signal_connect(pam, "auth-prompt-hidden", G_CALLBACK(on_hidden), g_strdup(password));
g_signal_connect(pam, "success", G_CALLBACK(on_success), NULL);
authenticate(pam);
g_main_loop_run(loop);
}
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