1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2011 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #include "FEATURE/uwin"
23
24 #if !_UWIN || _lib_getpass
25
_STUB_getpass()26 void _STUB_getpass(){}
27
28 #else
29
30 #pragma prototyped
31
32 #define getpass ______getpass
33
34 #include <ast.h>
35 #include <termios.h>
36 #include <signal.h>
37
38 #undef getpass
39
40 #if defined(__EXPORT__)
41 #define extern __EXPORT__
42 #endif
43
44 static int interrupt;
handler(int sig)45 static void handler(int sig)
46 {
47 interrupt++;
48 }
49
getpass(const char * prompt)50 extern char* getpass(const char *prompt)
51 {
52 struct termios told,tnew;
53 Sfio_t *iop;
54 static char *cp, passwd[32];
55 void (*savesig)(int);
56 if(!(iop = sfopen((Sfio_t*)0, "/dev/tty", "r")))
57 return(0);
58 if(tcgetattr(sffileno(iop),&told) < 0)
59 return(0);
60 interrupt = 0;
61 tnew = told;
62 tnew.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL);
63 if(tcsetattr(sffileno(iop),TCSANOW,&tnew) < 0)
64 return(0);
65 savesig = signal(SIGINT, handler);
66 sfputr(sfstderr,prompt,-1);
67 if(cp = sfgetr(iop,'\n',1))
68 strncpy(passwd,cp,sizeof(passwd)-1);
69 tcsetattr(sffileno(iop),TCSANOW,&told);
70 sfputc(sfstderr,'\n');
71 sfclose(iop);
72 signal(SIGINT, savesig);
73 if(interrupt)
74 kill(getpid(),SIGINT);
75 return(cp?passwd:0);
76 }
77
78
79 #endif
80