1 /* vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: */
2 /*
3 * Copyright 2017 Red Hat, Inc.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 #pragma once
19
20 #include <string.h>
21 #include <ctype.h>
22
23 #ifdef _WIN32
24 static const char *
jwe_getpass(const char * prompt)25 jwe_getpass(const char *prompt)
26 {
27 static char pwd[4096];
28
29 fprintf(stdout, "%s", prompt);
30
31 memset(pwd, 0, sizeof(pwd));
32 for (size_t i = 0; i < sizeof(pwd) - 1; i++) {
33 int c = fgetc(stdin);
34 if (c == EOF || !isprint(c) || isspace(c))
35 break;
36
37 pwd[i] = c;
38 }
39
40 return pwd;
41 }
42 #else
43 #include <termios.h>
44 static const char *
jwe_getpass(const char * prompt)45 jwe_getpass(const char *prompt)
46 {
47 static char pwd[4096];
48 struct termios of, nf;
49 FILE *tty = NULL;
50
51 tty = fopen("/dev/tty", "r+");
52 if (!tty)
53 return NULL;
54
55 tcgetattr(fileno(tty), &of);
56 nf = of;
57 nf.c_lflag &= ~ECHO;
58 nf.c_lflag |= ECHONL;
59
60 if (tcsetattr(fileno(tty), TCSANOW, &nf) != 0) {
61 fclose(tty);
62 return NULL;
63 }
64
65 fprintf(tty, "%s", prompt);
66
67 memset(pwd, 0, sizeof(pwd));
68 for (size_t i = 0; i < sizeof(pwd) - 1; i++) {
69 int c = fgetc(tty);
70 if (c == EOF || !isprint(c) || isspace(c))
71 break;
72
73 pwd[i] = c;
74 }
75
76 tcsetattr(fileno(tty), TCSANOW, &of);
77 fclose(tty);
78 return pwd;
79 }
80 #endif
81