Revision 85eb4f303f4fc9eb8edfd9be0f6f67d435af9972 authored by ha1215 on 23 April 2024, 01:54:36 UTC, committed by Tomas Mraz on 09 September 2024, 07:23:38 UTC
The possessive form of "Windows" has been updated from "Windows's" to "Windows'". The function call "a poll(2) call" has been specified as "a poll(2) system call" for clarity. The phrase "and supposed" has been corrected to "and was supposed" to improve sentence structure. The phrase "However Microsoft has" now includes a comma, revised to "However, Microsoft has" to enhance readability. The statement "Supporting these is a pain" has been adjusted to "Supporting these can be a pain" to better convey potential variability in user experience. CLA: trivial Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Paul Yang <kaishen.yy@antfin.com> Reviewed-by: Neil Horman <nhorman@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/24242)
1 parent a5cd06f
apps_ui.c
/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <string.h>
#include <openssl/err.h>
#include <openssl/ui.h>
#include "apps_ui.h"
static UI_METHOD *ui_method = NULL;
static const UI_METHOD *ui_base_method = NULL;
static int ui_open(UI *ui)
{
int (*opener)(UI *ui) = UI_method_get_opener(ui_base_method);
if (opener != NULL)
return opener(ui);
return 1;
}
static int ui_read(UI *ui, UI_STRING *uis)
{
int (*reader)(UI *ui, UI_STRING *uis) = NULL;
if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
&& UI_get0_user_data(ui)) {
switch (UI_get_string_type(uis)) {
case UIT_PROMPT:
case UIT_VERIFY:
{
const char *password =
((PW_CB_DATA *)UI_get0_user_data(ui))->password;
if (password != NULL) {
UI_set_result(ui, uis, password);
return 1;
}
}
break;
case UIT_NONE:
case UIT_BOOLEAN:
case UIT_INFO:
case UIT_ERROR:
break;
}
}
reader = UI_method_get_reader(ui_base_method);
if (reader != NULL)
return reader(ui, uis);
/* Default to the empty password if we've got nothing better */
UI_set_result(ui, uis, "");
return 1;
}
static int ui_write(UI *ui, UI_STRING *uis)
{
int (*writer)(UI *ui, UI_STRING *uis) = NULL;
if (UI_get_input_flags(uis) & UI_INPUT_FLAG_DEFAULT_PWD
&& UI_get0_user_data(ui)) {
switch (UI_get_string_type(uis)) {
case UIT_PROMPT:
case UIT_VERIFY:
{
const char *password =
((PW_CB_DATA *)UI_get0_user_data(ui))->password;
if (password != NULL)
return 1;
}
break;
case UIT_NONE:
case UIT_BOOLEAN:
case UIT_INFO:
case UIT_ERROR:
break;
}
}
writer = UI_method_get_writer(ui_base_method);
if (writer != NULL)
return writer(ui, uis);
return 1;
}
static int ui_close(UI *ui)
{
int (*closer)(UI *ui) = UI_method_get_closer(ui_base_method);
if (closer != NULL)
return closer(ui);
return 1;
}
/* object_name defaults to prompt_info from ui user data if present */
static char *ui_prompt_construct(UI *ui, const char *phrase_desc,
const char *object_name)
{
PW_CB_DATA *cb_data = (PW_CB_DATA *)UI_get0_user_data(ui);
if (phrase_desc == NULL)
phrase_desc = "pass phrase";
if (object_name == NULL && cb_data != NULL)
object_name = cb_data->prompt_info;
return UI_construct_prompt(NULL, phrase_desc, object_name);
}
int set_base_ui_method(const UI_METHOD *ui_meth)
{
if (ui_meth == NULL)
ui_meth = UI_null();
ui_base_method = ui_meth;
return 1;
}
int setup_ui_method(void)
{
ui_base_method = UI_null();
#ifndef OPENSSL_NO_UI_CONSOLE
ui_base_method = UI_OpenSSL();
#endif
ui_method = UI_create_method("OpenSSL application user interface");
return ui_method != NULL
&& 0 == UI_method_set_opener(ui_method, ui_open)
&& 0 == UI_method_set_reader(ui_method, ui_read)
&& 0 == UI_method_set_writer(ui_method, ui_write)
&& 0 == UI_method_set_closer(ui_method, ui_close)
&& 0 == UI_method_set_prompt_constructor(ui_method,
ui_prompt_construct);
}
void destroy_ui_method(void)
{
if (ui_method != NULL) {
UI_destroy_method(ui_method);
ui_method = NULL;
}
}
const UI_METHOD *get_ui_method(void)
{
return ui_method;
}
static void *ui_malloc(int sz, const char *what)
{
void *vp = OPENSSL_malloc(sz);
if (vp == NULL) {
BIO_printf(bio_err, "Could not allocate %d bytes for %s\n", sz, what);
ERR_print_errors(bio_err);
exit(1);
}
return vp;
}
int password_callback(char *buf, int bufsiz, int verify, PW_CB_DATA *cb_data)
{
int res = 0;
UI *ui;
int ok = 0;
char *buff = NULL;
int ui_flags = 0;
const char *prompt_info = NULL;
char *prompt;
if ((ui = UI_new_method(ui_method)) == NULL)
return 0;
if (cb_data != NULL && cb_data->prompt_info != NULL)
prompt_info = cb_data->prompt_info;
prompt = UI_construct_prompt(ui, "pass phrase", prompt_info);
if (prompt == NULL) {
BIO_printf(bio_err, "Out of memory\n");
UI_free(ui);
return 0;
}
ui_flags |= UI_INPUT_FLAG_DEFAULT_PWD;
UI_ctrl(ui, UI_CTRL_PRINT_ERRORS, 1, 0, 0);
/* We know that there is no previous user data to return to us */
(void)UI_add_user_data(ui, cb_data);
ok = UI_add_input_string(ui, prompt, ui_flags, buf,
PW_MIN_LENGTH, bufsiz - 1);
if (ok >= 0 && verify) {
buff = ui_malloc(bufsiz, "password buffer");
ok = UI_add_verify_string(ui, prompt, ui_flags, buff,
PW_MIN_LENGTH, bufsiz - 1, buf);
}
if (ok >= 0)
do {
ok = UI_process(ui);
} while (ok < 0 && UI_ctrl(ui, UI_CTRL_IS_REDOABLE, 0, 0, 0));
OPENSSL_clear_free(buff, (unsigned int)bufsiz);
if (ok >= 0)
res = strlen(buf);
if (ok == -1) {
BIO_printf(bio_err, "User interface error\n");
ERR_print_errors(bio_err);
OPENSSL_cleanse(buf, (unsigned int)bufsiz);
res = 0;
}
if (ok == -2) {
BIO_printf(bio_err, "aborted!\n");
OPENSSL_cleanse(buf, (unsigned int)bufsiz);
res = 0;
}
UI_free(ui);
OPENSSL_free(prompt);
return res;
}

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