kim_error kim_identity_change_password_common (kim_identity in_identity,
kim_boolean in_old_password_expired,
kim_ui_context *in_ui_context,
kim_string *out_new_password)
{
kim_error err = KIM_NO_ERROR;
kim_boolean done = 0;
if (!err && !in_identity ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !in_ui_context) { err = check_error (KIM_NULL_PARAMETER_ERR); }
while (!err && !done) {
char *old_password = NULL;
char *new_password = NULL;
char *verify_password = NULL;
kim_error rejected_err = KIM_NO_ERROR;
kim_string rejected_message = NULL;
kim_string rejected_description = NULL;
kim_boolean was_prompted = 0; /* ignore because we always prompt */
err = kim_ui_change_password (in_ui_context,
in_identity,
in_old_password_expired,
&old_password,
&new_password,
&verify_password);
if (!err) {
kim_comparison comparison;
err = kim_string_compare (new_password,
verify_password,
&comparison);
if (!err && !kim_comparison_is_equal_to (comparison)) {
err = check_error (KIM_PASSWORD_MISMATCH_ERR);
}
}
if (!err) {
kim_credential credential = NULL;
if (in_ui_context->type == kim_ui_type_cli && in_ui_context->tcontext) {
/* command line has already gotten the credentials for us */
credential = (kim_credential) in_ui_context->tcontext;
} else {
err = kim_credential_create_for_change_password (&credential,
in_identity,
old_password,
in_ui_context,
&was_prompted);
}
if (!err) {
err = kim_identity_change_password_with_credential (in_identity,
credential,
new_password,
in_ui_context,
&rejected_err,
&rejected_message,
&rejected_description);
}
kim_credential_free (&credential);
if (in_ui_context->type == kim_ui_type_cli) {
in_ui_context->tcontext = NULL; /* just freed our creds */
}
}
if (!err && rejected_err) {
/* Password rejected, report it to the user */
err = kim_ui_handle_error (in_ui_context, in_identity,
rejected_err,
rejected_message,
rejected_description);
} else if (err && err != KIM_USER_CANCELED_ERR &&
err != KIM_DUPLICATE_UI_REQUEST_ERR) {
/* New creds failed, report error to user.
* Overwrite error so we loop and let the user try again.
* The user always gets prompted so we always loop. */
err = kim_ui_handle_kim_error (in_ui_context, in_identity,
kim_ui_error_type_change_password,
err);
} else {
/* password change succeeded or the user gave up */
done = 1;
if (!err && out_new_password) {
err = kim_string_copy (out_new_password, new_password);
}
if (!err) {
kim_error terr = KIM_NO_ERROR;
kim_string saved_password = NULL;
terr = kim_os_identity_get_saved_password (in_identity,
&saved_password);
if (!terr) {
/* We changed the password and the user had their
* old password saved. Update it. */
terr = kim_os_identity_set_saved_password (in_identity,
new_password);
}
kim_string_free (&saved_password);
}
if (err == KIM_DUPLICATE_UI_REQUEST_ERR) { err = KIM_NO_ERROR; }
}
kim_string_free (&rejected_message);
kim_string_free (&rejected_description);
kim_ui_free_string (in_ui_context, &old_password);
kim_ui_free_string (in_ui_context, &new_password);
kim_ui_free_string (in_ui_context, &verify_password);
}
return check_error (err);
}
krb5_error_code kim_ui_prompter (krb5_context in_krb5_context,
void *in_context,
const char *in_name,
const char *in_banner,
int in_num_prompts,
krb5_prompt in_prompts[])
{
kim_error err = KIM_NO_ERROR;
krb5_prompt_type *types = NULL;
kim_ui_context *context = (kim_ui_context *) in_context;
int i;
if (!err && !in_krb5_context) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !in_context ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !in_prompts ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
types = krb5_get_prompt_types (in_krb5_context);
if (!types) { err = check_error (KIM_NULL_PARAMETER_ERR); }
}
for (i = 0; !err && i < in_num_prompts; i++) {
char *reply = NULL;
kim_prompt_type type = kim_ui_ptype2ktype (types[i]);
kim_boolean got_saved_password = 0;
if (type == kim_prompt_type_password) {
/* Check for saved password on OSes that support it */
kim_error terr = KIM_NO_ERROR;
terr = kim_os_identity_get_saved_password (context->identity,
(kim_string *) &reply);
if (!terr && reply) { got_saved_password = 1; }
}
if (!got_saved_password) {
kim_boolean save_reply = FALSE;
kim_boolean allow_save_password = kim_os_identity_allow_save_password ();
context->prompt_count++;
err = kim_ui_init_lazy (in_context);
if (!err) {
if (context->type == kim_ui_type_gui_plugin) {
err = kim_ui_plugin_auth_prompt (context,
context->identity,
type,
allow_save_password,
in_prompts[i].hidden,
in_name,
in_banner,
in_prompts[i].prompt,
&reply,
&save_reply);
#ifdef KIM_BUILTIN_UI
} else if (context->type == kim_ui_type_gui_builtin) {
err = kim_os_ui_gui_auth_prompt (context,
context->identity,
type,
allow_save_password,
in_prompts[i].hidden,
in_name,
in_banner,
in_prompts[i].prompt,
&reply,
&save_reply);
} else if (context->type == kim_ui_type_cli) {
err = kim_ui_cli_auth_prompt (context,
context->identity,
type,
allow_save_password,
in_prompts[i].hidden,
in_name,
in_banner,
in_prompts[i].prompt,
&reply,
&save_reply);
#endif /* KIM_BUILTIN_UI */
} else {
err = check_error (KIM_NO_UI_ERR);
}
}
if (!err && type == kim_prompt_type_password) {
kim_string_free (&context->password_to_save);
if (allow_save_password && save_reply) {
err = kim_string_copy (&context->password_to_save, reply);
}
}
}
if (!err) {
uint32_t reply_len = strlen (reply);
if ((reply_len + 1) > in_prompts[i].reply->length) {
kim_debug_printf ("%s(): reply %d is too long (is %d, should be %d)\n",
__FUNCTION__, i,
reply_len, in_prompts[i].reply->length);
reply_len = in_prompts[i].reply->length;
}
memmove (in_prompts[i].reply->data, reply, reply_len + 1);
in_prompts[i].reply->length = reply_len;
}
/* Clean up reply buffer. Saved passwords are allocated by KIM. */
if (reply) {
if (got_saved_password) {
memset (reply, '\0', strlen (reply));
kim_string_free ((kim_string *) &reply);
} else {
kim_ui_free_string (context, &reply);
}
}
}
return check_error (err);
}
