1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 /* apr_password_get.c: abstraction to provide for obtaining a password from the
18 * command line in whatever way the OS supports. In the best case, it's a
19 * wrapper for the system library's getpass() routine; otherwise, we
20 * use one we define ourselves.
22 #include "apr_private.h"
23 #include "apr_strings.h"
25 #include "apr_errno.h"
26 #if APR_HAVE_SYS_TYPES_H
27 #include <sys/types.h>
37 #pragma warning(disable: 4032)
39 #pragma warning(default: 4032)
47 #if APR_HAVE_STRINGS_H
51 #if defined(HAVE_TERMIOS_H) && !defined(HAVE_GETPASS)
55 #if !APR_CHARSET_EBCDIC
58 #else /* APR_CHARSET_EBCDIC */
61 #endif /* APR_CHARSET_EBCDIC */
63 #define MAX_STRING_LEN 256
65 #define ERR_OVERFLOW 5
69 /* MPE, Win32, NetWare and BeOS all lack a native getpass() */
71 #if !defined(HAVE_TERMIOS_H) && !defined(WIN32) && !defined(NETWARE)
73 * MPE lacks getpass() and a way to suppress stdin echo. So for now, just
74 * issue the prompt and read the results with echo. (Ugh).
77 static char *getpass(const char *prompt)
79 static char password[MAX_STRING_LEN];
81 fputs(prompt, stderr);
82 fgets((char *) &password, sizeof(password), stdin);
84 return (char *) &password;
87 #elif defined (HAVE_TERMIOS_H)
90 static char *getpass(const char *prompt)
93 static char password[MAX_STRING_LEN];
95 fputs(prompt, stderr);
98 if (tcgetattr(STDIN_FILENO, &attr) != 0)
100 attr.c_lflag &= ~(ECHO);
102 if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &attr) != 0)
104 while ((password[n] = getchar()) != '\n') {
105 if (n < sizeof(password) - 1 && password[n] >= ' ' && password[n] <= '~') {
108 fprintf(stderr,"\n");
109 fputs(prompt, stderr);
117 if (n > (MAX_STRING_LEN - 1)) {
118 password[MAX_STRING_LEN - 1] = '\0';
121 attr.c_lflag |= ECHO;
122 tcsetattr(STDIN_FILENO, TCSANOW, &attr);
123 return (char*) &password;
129 * Windows lacks getpass(). So we'll re-implement it here.
132 static char *getpass(const char *prompt)
134 /* WCE lacks console. So the getpass is unsuported
135 * The only way is to use the GUI so the getpass should be implemented
136 * on per-application basis.
141 static char password[128];
145 fputs(prompt, stderr);
147 while ((ch = _getch()) != '\r') {
148 if (ch == EOF) /* EOF */ {
149 fputs("[EOF]\n", stderr);
152 else if (ch == 0 || ch == 0xE0) {
153 /* FN Keys (0 or E0) are a sentinal for a FN code */
154 ch = (ch << 4) | _getch();
155 /* Catch {DELETE}, {<--}, Num{DEL} and Num{<--} */
156 if ((ch == 0xE53 || ch == 0xE4B || ch == 0x053 || ch == 0x04b) && n) {
157 password[--n] = '\0';
158 fputs("\b \b", stderr);
164 else if ((ch == '\b' || ch == 127) && n) /* BS/DEL */ {
165 password[--n] = '\0';
166 fputs("\b \b", stderr);
168 else if (ch == 3) /* CTRL+C */ {
169 /* _getch() bypasses Ctrl+C but not Ctrl+Break detection! */
170 fputs("^C\n", stderr);
173 else if (ch == 26) /* CTRL+Z */ {
174 fputs("^Z\n", stderr);
177 else if (ch == 27) /* ESC */ {
179 fputs(prompt, stderr);
182 else if ((n < sizeof(password) - 1) && !apr_iscntrl(ch)) {
197 #endif /* no getchar or _getch */
199 #endif /* no getpass */
202 * Use the OS getpass() routine (or our own) to obtain a password from
207 * 5: Partial success; entered text truncated to the size of the
210 * Restrictions: Truncation also occurs according to the host system's
211 * getpass() semantics, or at position 255 if our own version is used,
212 * but the caller is *not* made aware of it unless their own buffer is
213 * smaller than our own.
216 APR_DECLARE(apr_status_t) apr_password_get(const char *prompt, char *pwbuf, apr_size_t *bufsiz)
218 #ifdef HAVE_GETPASSPHRASE
219 char *pw_got = getpassphrase(prompt);
221 char *pw_got = getpass(prompt);
225 apr_cpystrn(pwbuf, pw_got, *bufsiz);
226 memset(pw_got, 0, strlen(pw_got));
227 if (strlen(pw_got) >= *bufsiz) {
228 return APR_ENAMETOOLONG;