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1 | /* |
2 | ** Copyright 2005-2006 Double Precision, Inc. See COPYING for |
3 | ** distribution information. |
4 | */ |
5 | |
6 | #if HAVE_CONFIG_H |
7 | #include "courier_auth_config.h" |
8 | #endif |
9 | #include <string.h> |
10 | #if HAVE_UNISTD_H |
11 | #include <unistd.h> |
12 | #endif |
13 | #include <stdlib.h> |
14 | #include <stdio.h> |
15 | #if HAVE_TERMIOS_H |
16 | #include <termios.h> |
17 | #endif |
18 | #include <signal.h> |
19 | #include "auth.h" |
20 | |
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21 | static const char rcsid[]="$Id: authpasswd.c,v 1.3 2009/06/27 15:51:48 mrsam Exp $"; |
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22 | /* |
23 | ** Where possible, we turn off echo when entering the password. |
24 | ** We set up a signal handler to catch signals and restore the echo |
25 | ** prior to exiting. |
26 | */ |
27 | |
28 | #if HAVE_TERMIOS_H |
29 | static struct termios tios; |
30 | static int have_tios; |
31 | |
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32 | static void sighandler(int signum) |
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33 | { |
34 | if (write(1, "\n", 1) < 0) |
35 | ; /* Ignore gcc warning */ |
36 | tcsetattr(0, TCSANOW, &tios); |
37 | _exit(0); |
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38 | } |
39 | #endif |
40 | |
41 | static void read_pw(char *buf) |
42 | { |
43 | int n, c; |
44 | |
45 | n=0; |
46 | while ((c=getchar()) != EOF && c != '\n') |
47 | if (n < BUFSIZ-1) |
48 | buf[n++]=c; |
49 | if (c == EOF && n == 0) exit(1); |
50 | buf[n]=0; |
51 | } |
52 | |
53 | int main(int argc, char **argv) |
54 | { |
55 | char buf[BUFSIZ]; |
56 | char *p; |
57 | char hint[100]; |
58 | |
59 | |
60 | strcpy(hint, "$1$"); |
61 | |
62 | if (argc > 1) |
63 | { |
64 | sprintf(hint, "{%1.15s}", argv[1]); |
65 | } |
66 | |
67 | /* Read the password */ |
68 | #if HAVE_TERMIOS_H |
69 | |
70 | have_tios=0; |
71 | if (tcgetattr(0, &tios) == 0) |
72 | { |
73 | struct termios tios2; |
74 | char buf2[BUFSIZ]; |
75 | |
76 | have_tios=1; |
77 | signal(SIGINT, sighandler); |
78 | signal(SIGHUP, sighandler); |
79 | tios2=tios; |
80 | tios2.c_lflag &= ~ECHO; |
81 | tcsetattr(0, TCSANOW, &tios2); |
82 | |
83 | for (;;) |
84 | { |
85 | if (write(2, "Password: ", 10) < 0) |
86 | ; /* Ignore gcc warning */ |
87 | read_pw(buf); |
88 | if (write(2, "\nReenter password: ", 19) < 0) |
89 | ; /* Ignore gcc warning */ |
90 | read_pw(buf2); |
91 | if (strcmp(buf, buf2) == 0) break; |
92 | if (write(2, "\nPasswords don't match.\n\n", 25) < 0) |
93 | ; /* Ignore gcc warning */ |
94 | |
95 | } |
96 | |
97 | } |
98 | else |
99 | #endif |
100 | read_pw(buf); |
101 | |
102 | #if HAVE_TERMIOS_H |
103 | if (have_tios) |
104 | { |
105 | if (write(2, "\n", 1) < 0) |
106 | ; /* Ignore gcc warning */ |
107 | tcsetattr(0, TCSANOW, &tios); |
108 | signal(SIGINT, SIG_DFL); |
109 | signal(SIGHUP, SIG_DFL); |
110 | } |
111 | #endif |
112 | |
113 | p=authcryptpasswd(buf, hint); |
114 | |
115 | if (p) |
116 | printf("%s\n", p); |
117 | return (0); |
118 | } |