1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
9: *
10: * This software is licensed as described in the file COPYING, which
11: * you should have received as part of this distribution. The terms
12: * are also available at https://curl.haxx.se/docs/copyright.html.
13: *
14: * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15: * copies of the Software, and permit persons to whom the Software is
16: * furnished to do so, under the terms of the COPYING file.
17: *
18: * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19: * KIND, either express or implied.
20: *
21: ***************************************************************************/
22: #include "tool_setup.h"
23:
24: #if defined(__AMIGA__) && !defined(__amigaos4__)
25: # undef HAVE_TERMIOS_H
26: #endif
27:
28: #ifndef HAVE_GETPASS_R
29: /* this file is only for systems without getpass_r() */
30:
31: #ifdef HAVE_FCNTL_H
32: # include <fcntl.h>
33: #endif
34:
35: #ifdef HAVE_TERMIOS_H
36: # include <termios.h>
37: #elif defined(HAVE_TERMIO_H)
38: # include <termio.h>
39: #endif
40:
41: #ifdef __VMS
42: # include descrip
43: # include starlet
44: # include iodef
45: #endif
46:
47: #ifdef WIN32
48: # include <conio.h>
49: #endif
50:
51: #ifdef NETWARE
52: # ifdef __NOVELL_LIBC__
53: # include <screen.h>
54: # else
55: # include <nwconio.h>
56: # endif
57: #endif
58:
59: #ifdef HAVE_UNISTD_H
60: #include <unistd.h>
61: #endif
62: #include "tool_getpass.h"
63:
64: #include "memdebug.h" /* keep this as LAST include */
65:
66: #ifdef __VMS
67: /* VMS implementation */
68: char *getpass_r(const char *prompt, char *buffer, size_t buflen)
69: {
70: long sts;
71: short chan;
72:
73: /* MSK, 23-JAN-2004, iosbdef.h wasn't in VAX V7.2 or CC 6.4 */
74: /* distribution so I created this. May revert back later to */
75: /* struct _iosb iosb; */
76: struct _iosb
77: {
78: short int iosb$w_status; /* status */
79: short int iosb$w_bcnt; /* byte count */
80: int unused; /* unused */
81: } iosb;
82:
83: $DESCRIPTOR(ttdesc, "TT");
84:
85: buffer[0] = '\0';
86: sts = sys$assign(&ttdesc, &chan, 0, 0);
87: if(sts & 1) {
88: sts = sys$qiow(0, chan,
89: IO$_READPROMPT | IO$M_NOECHO,
90: &iosb, 0, 0, buffer, buflen, 0, 0,
91: prompt, strlen(prompt));
92:
93: if((sts & 1) && (iosb.iosb$w_status & 1))
94: buffer[iosb.iosb$w_bcnt] = '\0';
95:
96: sys$dassgn(chan);
97: }
98: return buffer; /* we always return success */
99: }
100: #define DONE
101: #endif /* __VMS */
102:
103: #ifdef __SYMBIAN32__
104: # define getch() getchar()
105: #endif
106:
107: #if defined(WIN32) || defined(__SYMBIAN32__)
108:
109: char *getpass_r(const char *prompt, char *buffer, size_t buflen)
110: {
111: size_t i;
112: fputs(prompt, stderr);
113:
114: for(i = 0; i < buflen; i++) {
115: buffer[i] = (char)getch();
116: if(buffer[i] == '\r' || buffer[i] == '\n') {
117: buffer[i] = '\0';
118: break;
119: }
120: else
121: if(buffer[i] == '\b')
122: /* remove this letter and if this is not the first key, remove the
123: previous one as well */
124: i = i - (i >= 1 ? 2 : 1);
125: }
126: #ifndef __SYMBIAN32__
127: /* since echo is disabled, print a newline */
128: fputs("\n", stderr);
129: #endif
130: /* if user didn't hit ENTER, terminate buffer */
131: if(i == buflen)
132: buffer[buflen-1] = '\0';
133:
134: return buffer; /* we always return success */
135: }
136: #define DONE
137: #endif /* WIN32 || __SYMBIAN32__ */
138:
139: #ifdef NETWARE
140: /* NetWare implementation */
141: #ifdef __NOVELL_LIBC__
142: char *getpass_r(const char *prompt, char *buffer, size_t buflen)
143: {
144: return getpassword(prompt, buffer, buflen);
145: }
146: #else
147: char *getpass_r(const char *prompt, char *buffer, size_t buflen)
148: {
149: size_t i = 0;
150:
151: printf("%s", prompt);
152: do {
153: buffer[i++] = getch();
154: if(buffer[i-1] == '\b') {
155: /* remove this letter and if this is not the first key,
156: remove the previous one as well */
157: if(i > 1) {
158: printf("\b \b");
159: i = i - 2;
160: }
161: else {
162: RingTheBell();
163: i = i - 1;
164: }
165: }
166: else if(buffer[i-1] != 13)
167: putchar('*');
168:
169: } while((buffer[i-1] != 13) && (i < buflen));
170: buffer[i-1] = '\0';
171: printf("\r\n");
172: return buffer;
173: }
174: #endif /* __NOVELL_LIBC__ */
175: #define DONE
176: #endif /* NETWARE */
177:
178: #ifndef DONE /* not previously provided */
179:
180: #ifdef HAVE_TERMIOS_H
181: # define struct_term struct termios
182: #elif defined(HAVE_TERMIO_H)
183: # define struct_term struct termio
184: #else
185: # undef struct_term
186: #endif
187:
188: static bool ttyecho(bool enable, int fd)
189: {
190: #ifdef struct_term
191: static struct_term withecho;
192: static struct_term noecho;
193: #endif
194: if(!enable) {
195: /* disable echo by extracting the current 'withecho' mode and remove the
196: ECHO bit and set back the struct */
197: #ifdef HAVE_TERMIOS_H
198: tcgetattr(fd, &withecho);
199: noecho = withecho;
200: noecho.c_lflag &= ~ECHO;
201: tcsetattr(fd, TCSANOW, &noecho);
202: #elif defined(HAVE_TERMIO_H)
203: ioctl(fd, TCGETA, &withecho);
204: noecho = withecho;
205: noecho.c_lflag &= ~ECHO;
206: ioctl(fd, TCSETA, &noecho);
207: #else
208: /* neither HAVE_TERMIO_H nor HAVE_TERMIOS_H, we can't disable echo! */
209: (void)fd;
210: return FALSE; /* not disabled */
211: #endif
212: return TRUE; /* disabled */
213: }
214: /* re-enable echo, assumes we disabled it before (and set the structs we
215: now use to reset the terminal status) */
216: #ifdef HAVE_TERMIOS_H
217: tcsetattr(fd, TCSAFLUSH, &withecho);
218: #elif defined(HAVE_TERMIO_H)
219: ioctl(fd, TCSETA, &withecho);
220: #else
221: return FALSE; /* not enabled */
222: #endif
223: return TRUE; /* enabled */
224: }
225:
226: char *getpass_r(const char *prompt, /* prompt to display */
227: char *password, /* buffer to store password in */
228: size_t buflen) /* size of buffer to store password in */
229: {
230: ssize_t nread;
231: bool disabled;
232: int fd = open("/dev/tty", O_RDONLY);
233: if(-1 == fd)
234: fd = STDIN_FILENO; /* use stdin if the tty couldn't be used */
235:
236: disabled = ttyecho(FALSE, fd); /* disable terminal echo */
237:
238: fputs(prompt, stderr);
239: nread = read(fd, password, buflen);
240: if(nread > 0)
241: password[--nread] = '\0'; /* zero terminate where enter is stored */
242: else
243: password[0] = '\0'; /* got nothing */
244:
245: if(disabled) {
246: /* if echo actually was disabled, add a newline */
247: fputs("\n", stderr);
248: (void)ttyecho(TRUE, fd); /* enable echo */
249: }
250:
251: if(STDIN_FILENO != fd)
252: close(fd);
253:
254: return password; /* return pointer to buffer */
255: }
256:
257: #endif /* DONE */
258: #endif /* HAVE_GETPASS_R */
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