9c4b9a0311
Produce an error when requesting a new password if both attempts do not match. Closes #2011. Thanks to Willem Eradus.
145 lines
2.8 KiB
C
145 lines
2.8 KiB
C
/*
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Copyright (c) 2012-2020 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License 2.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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https://www.eclipse.org/legal/epl-2.0/
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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SPDX-License-Identifier: EPL-2.0 OR EDL-1.0
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include "config.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef WIN32
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# include <windows.h>
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# include <process.h>
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# define snprintf sprintf_s
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# include <io.h>
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# include <windows.h>
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#else
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# include <unistd.h>
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# include <termios.h>
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# include <sys/stat.h>
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#endif
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#define MAX_BUFFER_LEN 65536
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#define SALT_LEN 12
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void get_password__reset_term(void)
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{
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#ifndef WIN32
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struct termios ts;
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tcgetattr(0, &ts);
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ts.c_lflag |= ECHO | ICANON;
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tcsetattr(0, TCSANOW, &ts);
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#endif
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}
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static int gets_quiet(char *s, int len)
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{
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#ifdef WIN32
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HANDLE h;
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DWORD con_orig, con_quiet = 0;
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DWORD read_len = 0;
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memset(s, 0, len);
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h = GetStdHandle(STD_INPUT_HANDLE);
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GetConsoleMode(h, &con_orig);
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con_quiet = con_orig;
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con_quiet &= ~ENABLE_ECHO_INPUT;
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con_quiet |= ENABLE_LINE_INPUT;
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SetConsoleMode(h, con_quiet);
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if(!ReadConsole(h, s, len, &read_len, NULL)){
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SetConsoleMode(h, con_orig);
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return 1;
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}
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while(s[strlen(s)-1] == 10 || s[strlen(s)-1] == 13){
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s[strlen(s)-1] = 0;
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}
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if(strlen(s) == 0){
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return 1;
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}
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SetConsoleMode(h, con_orig);
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return 0;
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#else
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struct termios ts_quiet, ts_orig;
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char *rs;
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memset(s, 0, (size_t)len);
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tcgetattr(0, &ts_orig);
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ts_quiet = ts_orig;
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ts_quiet.c_lflag &= (unsigned int)(~(ECHO | ICANON));
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tcsetattr(0, TCSANOW, &ts_quiet);
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rs = fgets(s, len, stdin);
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tcsetattr(0, TCSANOW, &ts_orig);
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if(!rs){
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return 1;
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}else{
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while(s[strlen(s)-1] == 10 || s[strlen(s)-1] == 13){
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s[strlen(s)-1] = 0;
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}
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if(strlen(s) == 0){
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return 1;
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}
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}
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return 0;
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#endif
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}
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int get_password(const char *prompt, const char *verify_prompt, bool quiet, char *password, size_t len)
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{
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char pw1[MAX_BUFFER_LEN], pw2[MAX_BUFFER_LEN];
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size_t minLen;
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minLen = len < MAX_BUFFER_LEN ? len : MAX_BUFFER_LEN;
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printf("%s", prompt);
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fflush(stdout);
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if(gets_quiet(pw1, (int)minLen)){
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if(!quiet){
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fprintf(stderr, "Error: Empty password.\n");
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}
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return 1;
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}
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printf("\n");
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if(verify_prompt){
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printf("%s", verify_prompt);
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fflush(stdout);
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if(gets_quiet(pw2, (int)minLen)){
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if(!quiet){
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fprintf(stderr, "Error: Empty password.\n");
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}
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return 1;
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}
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printf("\n");
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if(strcmp(pw1, pw2)){
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if(!quiet){
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fprintf(stderr, "Error: Passwords do not match.\n");
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}
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return 2;
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}
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}
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strncpy(password, pw1, minLen);
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return 0;
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}
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