2 * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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34 #include "login_locl.h"
38 static sig_atomic_t intr_flag;
51 read_string(const char *prompt, char *buf, size_t len, int echo)
53 struct sigaction sigs[NSIG];
63 struct termios t_new, t_old;
65 memset(&oksigs, 0, sizeof(oksigs));
67 memset(&sa, 0, sizeof(sa));
69 sigemptyset(&sa.sa_mask);
71 for(i = 1; i < sizeof(sigs) / sizeof(sigs[0]); i++)
73 if (sigaction(i, &sa, &sigs[i]) == 0)
76 if((tty = fopen("/dev/tty", "r")) == NULL)
79 fprintf(stderr, "%s", prompt);
83 tcgetattr(fileno(tty), &t_old);
84 memcpy(&t_new, &t_old, sizeof(t_new));
85 t_new.c_lflag &= ~ECHO;
86 tcsetattr(fileno(tty), TCSANOW, &t_new);
90 while(intr_flag == 0){
101 of = (p == buf + len);
109 tcsetattr(fileno(tty), TCSANOW, &t_old);
115 for(i = 1; i < sizeof(sigs) / sizeof(sigs[0]); i++)
117 sigaction(i, &sigs[i], NULL);
134 ret = read_string("foo: ", s, sizeof(s), 0);
135 printf("%d ->%s<-\n", ret, s);