1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 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; 45 static void handler(int sig) 46 { 47 interrupt++; 48 } 49 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