/*
* Authentication callback for libsmbclient
*/
static void get_auth_data_with_context_fn(SMBCCTX *smb_ctx,
const char *srv,
const char *shr,
char *wg, int wglen,
char *un, int unlen,
char *pw, int pwlen)
{
static int try_krb5 = 1;
char *h;
(void) smb_ctx;
(void) shr;
(void) wg;
(void) wglen;
DEBUG_SMB(("csync_smb - user=%s, workgroup=%s, server=%s, share=%s\n",
un, wg, srv, shr));
/* Don't authenticate for workgroup listing */
if (srv == NULL || srv[0] == '\0') {
DEBUG_SMB(("csync_smb - emtpy server name"));
return;
}
/* Try kerberos authentication if available */
if (try_krb5 && getenv("KRB5CCNAME")) {
try_krb5 = 0;
return;
}
/* check for an existing user */
h = smbc_getUser(smb_ctx);
if (h != NULL) {
/* The username is known from the url. */
DEBUG_SMB(("csync_smb - have username from url: %s\n", h));
if (snprintf(un, unlen, "%s", h) < 0) {
/* Even if that fials, go on. */
}
} else {
if (_authcb != NULL) {
DEBUG_SMB(("csync_smb - execute authentication callback\n"));
(*_authcb) ("Username:"******"Password:"******"csync_smb - user=%s, workgroup=%s, server=%s, share=%s\n",
un, wg, srv, shr));
try_krb5 = 1;
return;
}
csync_vio_method_t *vio_module_init(const char *method_name, const char *args,
csync_auth_callback cb, void *userdata) {
smb_context = smbc_new_context();
DEBUG_SMB(("csync_smb - method_name: %s\n", method_name));
DEBUG_SMB(("csync_smb - args: %s\n", args));
(void) method_name;
(void) args;
(void) cb;
if (smb_context == NULL) {
fprintf(stderr, "csync_smb - failed to create new smbc context\n");
return NULL;
}
if (cb != NULL) {
_authcb = cb;
}
/* set debug level and authentication function callback */
smbc_setDebug(smb_context, 0);
smbc_setOptionUserData(smb_context, userdata);
smbc_setFunctionAuthDataWithContext(smb_context, get_auth_data_with_context_fn);
/* Kerberos support */
smbc_setOptionUseKerberos(smb_context, 1);
smbc_setOptionFallbackAfterKerberos(smb_context, 1);
DEBUG_SMB(("csync_smb - use kerberos = %d\n",
smbc_getOptionUseKerberos(smb_context)));
DEBUG_SMB(("csync_smb - use fallback after kerberos = %d\n",
smbc_getOptionFallbackAfterKerberos(smb_context)));
if (smbc_init_context(smb_context) == NULL) {
fprintf(stderr, "csync_smb - failed to initialize the smbc context");
smbc_free_context(smb_context, 0);
smb_context = NULL;
return NULL;
}
DEBUG_SMB(("csync_smb - KRB5CCNAME = %s\n", getenv("KRB5CCNAME") != NULL ?
getenv("KRB5CCNAME") : "not set"));
smbc_set_context(smb_context);
return &_method;
}
/*
* Authentication callback for libsmbclient
*/
static void get_auth_data_with_context_fn(SMBCCTX *c,
const char *srv,
const char *shr,
char *wg, int wglen,
char *un, int unlen,
char *pw, int pwlen) {
static int try_krb5 = 1;
(void) c;
(void) shr;
(void) wg;
(void) wglen;
DEBUG_SMB(("csync_smb - user=%s, workgroup=%s, server=%s, share=%s\n",
un, wg, srv, shr));
/* Don't authenticate for workgroup listing */
if (srv == NULL || srv[0] == '\0') {
DEBUG_SMB(("csync_smb - emtpy server name"));
return;
}
/* Try kerberos authentication if available */
if (try_krb5 && getenv("KRB5CCNAME")) {
try_krb5 = 0;
return;
}
/* Call the passwort prompt */
if (_authcb != NULL) {
DEBUG_SMB(("csync_smb - execute authentication callback\n"));
(*_authcb) ("Username:"******"Password:"******"csync_smb - user=%s, workgroup=%s, server=%s, share=%s\n",
un, wg, srv, shr));
try_krb5 = 1;
return;
}
