1*c9945492SAndroid Build Coastguard Worker #define _GNU_SOURCE
2*c9945492SAndroid Build Coastguard Worker #include <stdio.h>
3*c9945492SAndroid Build Coastguard Worker #include <termios.h>
4*c9945492SAndroid Build Coastguard Worker #include <unistd.h>
5*c9945492SAndroid Build Coastguard Worker #include <fcntl.h>
6*c9945492SAndroid Build Coastguard Worker #include <string.h>
7*c9945492SAndroid Build Coastguard Worker
getpass(const char * prompt)8*c9945492SAndroid Build Coastguard Worker char *getpass(const char *prompt)
9*c9945492SAndroid Build Coastguard Worker {
10*c9945492SAndroid Build Coastguard Worker int fd;
11*c9945492SAndroid Build Coastguard Worker struct termios s, t;
12*c9945492SAndroid Build Coastguard Worker ssize_t l;
13*c9945492SAndroid Build Coastguard Worker static char password[128];
14*c9945492SAndroid Build Coastguard Worker
15*c9945492SAndroid Build Coastguard Worker if ((fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) return 0;
16*c9945492SAndroid Build Coastguard Worker
17*c9945492SAndroid Build Coastguard Worker tcgetattr(fd, &t);
18*c9945492SAndroid Build Coastguard Worker s = t;
19*c9945492SAndroid Build Coastguard Worker t.c_lflag &= ~(ECHO|ISIG);
20*c9945492SAndroid Build Coastguard Worker t.c_lflag |= ICANON;
21*c9945492SAndroid Build Coastguard Worker t.c_iflag &= ~(INLCR|IGNCR);
22*c9945492SAndroid Build Coastguard Worker t.c_iflag |= ICRNL;
23*c9945492SAndroid Build Coastguard Worker tcsetattr(fd, TCSAFLUSH, &t);
24*c9945492SAndroid Build Coastguard Worker tcdrain(fd);
25*c9945492SAndroid Build Coastguard Worker
26*c9945492SAndroid Build Coastguard Worker dprintf(fd, "%s", prompt);
27*c9945492SAndroid Build Coastguard Worker
28*c9945492SAndroid Build Coastguard Worker l = read(fd, password, sizeof password);
29*c9945492SAndroid Build Coastguard Worker if (l >= 0) {
30*c9945492SAndroid Build Coastguard Worker if (l > 0 && password[l-1] == '\n' || l==sizeof password) l--;
31*c9945492SAndroid Build Coastguard Worker password[l] = 0;
32*c9945492SAndroid Build Coastguard Worker }
33*c9945492SAndroid Build Coastguard Worker
34*c9945492SAndroid Build Coastguard Worker tcsetattr(fd, TCSAFLUSH, &s);
35*c9945492SAndroid Build Coastguard Worker
36*c9945492SAndroid Build Coastguard Worker dprintf(fd, "\n");
37*c9945492SAndroid Build Coastguard Worker close(fd);
38*c9945492SAndroid Build Coastguard Worker
39*c9945492SAndroid Build Coastguard Worker return l<0 ? 0 : password;
40*c9945492SAndroid Build Coastguard Worker }
41