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/*
* $Header$
*
* Copyright 2008 Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#ifndef LEAN_CLIENT
#include "kim_private.h"
// ---------------------------------------------------------------------------
static kim_error kim_ui_cli_read_string (kim_string *out_string,
kim_boolean in_hide_reply,
const char *in_format, ...)
{
kim_error err = KIM_NO_ERROR;
krb5_context k5context = NULL;
krb5_prompt prompts[1];
char prompt_string [BUFSIZ];
krb5_data reply_data;
char reply_string [BUFSIZ];
if (!err && !out_string) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !in_format ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
err = krb5_init_context (&k5context);
}
if (!err) {
unsigned int count;
va_list args;
va_start (args, in_format);
count = vsnprintf (prompt_string, sizeof (prompt_string),
in_format, args);
va_end (args);
if (count > sizeof (prompt_string)) {
kim_debug_printf ("%s(): WARNING! Prompt should be %d characters\n",
__FUNCTION__, count);
prompt_string [sizeof (prompt_string) - 1] = '\0';
}
}
if (!err) {
/* Build the prompt structures */
prompts[0].prompt = prompt_string;
prompts[0].hidden = in_hide_reply;
prompts[0].reply = &reply_data;
prompts[0].reply->data = reply_string;
prompts[0].reply->length = sizeof (reply_string);
err = krb5_prompter_posix (k5context, NULL, NULL, NULL, 1, prompts);
if (err == KRB5_LIBOS_PWDINTR) { err = check_error (KIM_USER_CANCELED_ERR); }
}
if (!err) {
err = kim_string_create_from_buffer (out_string,
prompts[0].reply->data,
prompts[0].reply->length);
}
if (k5context) { krb5_free_context (k5context); }
return check_error (err);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_init (kim_ui_context *io_context)
{
if (io_context) {
io_context->tcontext = NULL;
}
return KIM_NO_ERROR;
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_enter_identity (kim_ui_context *in_context,
kim_identity *out_identity)
{
kim_error err = KIM_NO_ERROR;
kim_string enter_identity_string = NULL;
kim_string identity_string = NULL;
if (!err && !out_identity) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
err = kim_os_string_create_localized (&enter_identity_string,
"Please enter your Kerberos identity");
}
if (!err) {
err = kim_ui_cli_read_string (&identity_string,
0, enter_identity_string);
}
if (!err) {
err = kim_identity_create_from_string (out_identity, identity_string);
}
kim_string_free (&identity_string);
kim_string_free (&enter_identity_string);
return check_error (err);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_select_identity (kim_ui_context *in_context,
kim_selection_hints in_hints,
kim_identity *out_identity)
{
kim_error err = KIM_NO_ERROR;
if (!err && !in_hints ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !out_identity) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
err = kim_ui_cli_enter_identity (in_context, out_identity);
}
return check_error (err);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_auth_prompt (kim_ui_context *in_context,
kim_identity in_identity,
kim_prompt_type in_type,
kim_boolean in_allow_save_reply,
kim_boolean in_hide_reply,
kim_string in_title,
kim_string in_message,
kim_string in_description,
char **out_reply,
kim_boolean *out_save_reply)
{
kim_error err = KIM_NO_ERROR;
if (!err && !in_identity) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !out_reply ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
/* in_title, in_message or in_description may be NULL */
if (!err) {
if (in_type == kim_prompt_type_password) {
kim_string enter_password_format = NULL;
kim_string identity_string = NULL;
err = kim_os_string_create_localized (&enter_password_format,
"Please enter the password for %s");
if (!err) {
err = kim_identity_get_display_string (in_identity,
&identity_string);
}
if (!err) {
err = kim_ui_cli_read_string ((kim_string *) out_reply,
1, enter_password_format,
identity_string);
}
kim_string_free (&identity_string);
kim_string_free (&enter_password_format);
} else {
krb5_context k5context = NULL;
krb5_prompt prompts[1];
krb5_data reply_data;
char reply_string [BUFSIZ];
prompts[0].prompt = (char *) in_description;
prompts[0].hidden = in_hide_reply;
prompts[0].reply = &reply_data;
prompts[0].reply->data = reply_string;
prompts[0].reply->length = sizeof (reply_string);
err = krb5_init_context (&k5context);
if (!err) {
err = krb5_prompter_posix (k5context, in_context, in_title,
in_message, 1, prompts);
if (err == KRB5_LIBOS_PWDINTR) { err = check_error (KIM_USER_CANCELED_ERR); }
}
if (!err) {
err = kim_string_create_from_buffer ((kim_string *) out_reply,
prompts[0].reply->data,
prompts[0].reply->length);
if (!err) {
/* always allow password saving */
*out_save_reply = (in_allow_save_reply &&
in_type == kim_prompt_type_password);
}
}
if (k5context) { krb5_free_context (k5context); }
}
}
return check_error (err);
}
/* ------------------------------------------------------------------------ */
static kim_error kim_ui_cli_ask_change_password (kim_string in_identity_string)
{
kim_error err = KIM_NO_ERROR;
kim_string ask_change_password = NULL;
kim_string answer_options = NULL;
kim_string yes = NULL;
kim_string no = NULL;
kim_string unknown_response = NULL;
kim_boolean done = 0;
kim_comparison no_comparison, yes_comparison;
if (!err) {
err = kim_os_string_create_localized (&ask_change_password,
"Your password has expired, would you like to change it? (yes/no)");
}
if (!err) {
err = kim_os_string_create_localized (&yes, "yes");
}
if (!err) {
err = kim_os_string_create_localized (&no, "no");
}
if (!err) {
err = kim_os_string_create_localized (&unknown_response,
"%s is not a response I understand. Please try again.");
}
while (!err && !done) {
kim_string answer = NULL;
err = kim_ui_cli_read_string (&answer, 0, ask_change_password);
if (!err) {
err = kim_os_string_compare (answer, no,
1 /* case insensitive */,
&no_comparison);
}
if (!err && kim_comparison_is_equal_to (no_comparison)) {
err = check_error (KIM_USER_CANCELED_ERR);
}
if (!err) {
err = kim_os_string_compare (answer, yes,
1 /* case insensitive */,
&yes_comparison);
}
if (!err) {
if (kim_comparison_is_equal_to (yes_comparison)) {
done = 1;
} else {
fprintf (stdout, unknown_response, answer);
fprintf (stdout, "\n");
}
}
kim_string_free (&answer);
}
kim_string_free (&ask_change_password);
kim_string_free (&answer_options);
kim_string_free (&yes);
kim_string_free (&no);
kim_string_free (&unknown_response);
return check_error (err);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_change_password (kim_ui_context *in_context,
kim_identity in_identity,
kim_boolean in_old_password_expired,
char **out_old_password,
char **out_new_password,
char **out_verify_password)
{
kim_error err = KIM_NO_ERROR;
kim_string enter_old_password_format = NULL;
kim_string enter_new_password_format = NULL;
kim_string enter_verify_password_format = NULL;
kim_string identity_string = NULL;
kim_string old_password = NULL;
kim_string new_password = NULL;
kim_string verify_password = NULL;
kim_boolean done = 0;
if (!err && !in_identity ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !out_old_password ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !out_new_password ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !out_verify_password) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
err = kim_identity_get_display_string (in_identity, &identity_string);
}
if (!err && in_old_password_expired) {
err = kim_ui_cli_ask_change_password (identity_string);
}
if (!err) {
err = kim_os_string_create_localized (&enter_old_password_format,
"Please enter the old password for %s");
}
if (!err) {
err = kim_os_string_create_localized (&enter_new_password_format,
"Please enter the new password for %s");
}
if (!err) {
err = kim_os_string_create_localized (&enter_verify_password_format,
"Verifying, please re-enter the new password for %s again");
}
while (!err && !done) {
kim_boolean was_prompted = 0; /* ignore because we always prompt */
kim_string_free (&old_password);
err = kim_ui_cli_read_string (&old_password,
1, enter_old_password_format,
identity_string);
if (!err) {
err = kim_credential_create_for_change_password ((kim_credential *) &in_context->tcontext,
in_identity,
old_password,
in_context,
&was_prompted);
}
if (err && err != KIM_USER_CANCELED_ERR) {
/* new creds failed, report error to user */
err = kim_ui_handle_kim_error (in_context, in_identity,
kim_ui_error_type_authentication,
err);
} else {
done = 1;
}
}
if (!err) {
err = kim_ui_cli_read_string (&new_password,
1, enter_new_password_format,
identity_string);
}
if (!err) {
err = kim_ui_cli_read_string (&verify_password,
1, enter_verify_password_format,
identity_string);
}
if (!err) {
*out_old_password = (char *) old_password;
old_password = NULL;
*out_new_password = (char *) new_password;
new_password = NULL;
*out_verify_password = (char *) verify_password;
verify_password = NULL;
}
kim_string_free (&old_password);
kim_string_free (&new_password);
kim_string_free (&verify_password);
kim_string_free (&identity_string);
kim_string_free (&enter_old_password_format);
kim_string_free (&enter_new_password_format);
kim_string_free (&enter_verify_password_format);
return check_error (err);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_handle_error (kim_ui_context *in_context,
kim_identity in_identity,
kim_error in_error,
kim_string in_error_message,
kim_string in_error_description)
{
kim_error err = KIM_NO_ERROR;
if (!err && !in_error_message ) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err && !in_error_description) { err = check_error (KIM_NULL_PARAMETER_ERR); }
if (!err) {
fprintf (stdout, "%s\n%s\n\n", in_error_message, in_error_description);
}
return check_error (err);
}
/* ------------------------------------------------------------------------ */
void kim_ui_cli_free_string (kim_ui_context *in_context,
char **io_string)
{
kim_string_free ((kim_string *) io_string);
}
/* ------------------------------------------------------------------------ */
kim_error kim_ui_cli_fini (kim_ui_context *io_context)
{
if (io_context) {
kim_credential_free ((kim_credential *) &io_context->tcontext);
}
return KIM_NO_ERROR;
}
#endif /* LEAN_CLIENT */
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