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sasl-checkpass.c
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sasl-checkpass.c
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#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "sasl.h"
#include "include/saslplug.h"
#ifdef SASL2
static int main_requested_sasl_version = 2;
#else
static int main_requested_sasl_version = 1;
#endif
static int main_verbose = 0;
static int
my_getopt(void *context, const char *plugin_name,
const char *option, const char **result, unsigned *len)
{
if (result) {
*result = NULL;
if (strcmp(option, "pwcheck_method") == 0) {
*result = "saslauthd";
}
if (strcmp(option, "saslauthd_version") == 0) {
switch (main_requested_sasl_version) {
case 1:
*result = "1";
break;
case 2:
*result = "2";
break;
default:
#ifdef SASL2
*result = "2";
#else
*result = "1";
#endif
break;
}
}
if (main_verbose) {
fprintf(stderr, "Getopt plugin=%s%s%s/option=%s%s%s -> ",
plugin_name ? "\"" : "",
plugin_name ? plugin_name : "(null)",
plugin_name ? "\"" : "",
option ? "\"" : "",
option ? option : "(null)",
option ? "\"" : "");
fprintf(stderr, "'%s'.\n", *result ? *result : "");
}
}
if (len) {
*len = 0;
}
return 0;
}
int
main(int argc, char **argv)
{
const char *user, *realm, *passwd, *service, *mechs, **globals, *err;
int c, ret;
sasl_callback_t callbacks[] = {
{SASL_CB_GETOPT, (sasl_callback_ft)my_getopt, NULL},
{SASL_CB_LIST_END},
};
sasl_conn_t *connection;
char hostname[512];
char fulluser[512]; /* XXX: may overflow */
user = realm = passwd = service = "";
strcpy(hostname, "localhost");
gethostname(hostname, sizeof(hostname));
while ((c = getopt(argc, argv, "u:r:p:s:h:12v")) != -1) {
switch (c) {
case 'u':
user = optarg;
break;
case 'r':
realm = optarg;
break;
case 'p':
passwd = optarg;
break;
case 's':
service = optarg;
break;
case 'h':
strncpy(hostname, optarg, sizeof(hostname) - 1);
hostname[sizeof(hostname) - 1] = '\0';
break;
case '1':
main_requested_sasl_version = 1;
break;
case '2':
main_requested_sasl_version = 2;
break;
case 'v':
main_verbose++;
break;
default:
printf("Usage: %s [-v] [-1] [-2] "
"[-h hostname] "
"[-u user] "
"[-r realm] "
"[-p password] "
"[-s service] "
"\n", argv[0]);
return 2;
break;
}
}
if ((strlen(user) == 0) || (strlen(passwd) == 0)) {
printf("Usage: %s [-v] [-1] [-2] "
"[-h hostname] "
"[-u user] "
"[-r realm] "
"[-p password] "
"[-s service] "
"\n", argv[0]);
return 2;
}
if (realm && (strlen(realm) > 0)) {
sprintf(fulluser, "%s@%s", user, realm);
} else {
sprintf(fulluser, "%s", user);
}
ret = sasl_server_init(callbacks,
strlen(service) ? service : "sasl-checkpass");
if (ret != SASL_OK) {
fprintf(stderr, "Error in sasl_server_init(): %s\n",
sasl_errstring(ret, NULL, NULL));
}
connection = NULL;
ret = sasl_server_new(strlen(service) ? service : "sasl-checkpass",
hostname,
NULL,
#ifdef SASL2
NULL,
NULL,
#endif
callbacks,
0,
&connection);
if (ret != SASL_OK) {
fprintf(stderr, "Error in sasl_server_new(): %s\n",
sasl_errstring(ret, NULL, NULL));
}
err = NULL;
ret = sasl_checkpass(connection,
fulluser, strlen(fulluser),
passwd, strlen(passwd)
#ifndef SASL2
, &err
#endif
);
switch (ret) {
case SASL_OK:
printf("OK\n");
break;
default:
printf("NO: %d", ret);
switch (ret) {
case SASL_FAIL:
err = "generic failure";
break;
case SASL_BADAUTH:
err = "authentication failure";
break;
default:
err = NULL;
break;
}
if (err) {
printf(" (%s)", err);
}
printf("\n");
break;
}
return ret;
}