2 * For license terms, see the file COPYING in this directory.
5 /***********************************************************************
8 programmer: Carl Harris, ceharris@mal.com
9 description: getpass() replacement which allows for long passwords.
10 This version hacked by Wilfred Teiken, allowing the
11 password to be piped to fetchmail.
13 ***********************************************************************/
20 #if defined(HAVE_UNISTD_H)
23 #include "fetchmail.h"
25 #define INPUT_BUF_SIZE PASSWORDLEN
27 #if defined(HAVE_TERMIOS_H) && defined(HAVE_TCSETATTR)
30 #if defined(HAVE_TERMIO_H)
31 # include <sys/ioctl.h>
34 #if defined(HAVE_SGTTY_H)
42 #if defined(HAVE_TCSETATTR)
43 static struct termios termb;
44 static tcflag_t flags;
46 #if defined(HAVE_TERMIO_H)
47 static struct termio termb;
48 static unsigned short flags;
50 #if defined(HAVE_STTY)
51 static struct sgttyb ttyb;
57 void static save_tty_state();
58 void static disable_tty_echo();
59 void static restore_tty_state();
60 static RETSIGTYPE sigint_handler();
62 char *getpassword(prompt)
65 #if !(defined(HAVE_TCSETATTR) || defined(HAVE_TERMIO_H) || defined(HAVE_STTY))
66 #if defined(HAVE_GETPASS)
68 return getpass(prompt);
70 fputs("ERROR: no support for getpassword() routine\n",stderr);
77 static char pbuf[INPUT_BUF_SIZE];
79 RETSIGTYPE sigint_handler();
81 int istty = isatty(0);
83 /* get the file descriptor for the actual input device if it's a tty */
86 if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
89 setbuf(fi, (char *)NULL);
94 /* store descriptor for the tty */
99 /* preserve tty state before turning off echo */
102 /* now that we have the current tty state, we can catch SIGINT and
104 sig = signal(SIGINT, sigint_handler);
106 /* turn off echo on the tty */
109 /* display the prompt and get the input string */
110 fprintf(stderr, "%s", prompt);
113 for (p = pbuf; (c = getc(fi))!='\n' && c!=EOF;)
115 if (p < &pbuf[INPUT_BUF_SIZE - 1])
120 /* write a newline so cursor won't appear to hang */
122 fprintf(stderr, "\n");
126 /* restore previous state of the tty */
129 /* restore previous state of SIGINT */
136 #endif /* !(defined(HAVE_TCSETATTR) || ... */
139 static void save_tty_state ()
141 #if defined(HAVE_TCSETATTR)
142 tcgetattr(ttyfd, &termb);
143 flags = termb.c_lflag;
145 #if defined(HAVE_TERMIO_H)
146 ioctl(ttyfd, TCGETA, (char *) &termb);
147 flags = termb.c_lflag;
148 #else /* we HAVE_STTY */
150 flags = ttyb.sg_flags;
155 static void disable_tty_echo()
157 /* turn off echo on the tty */
158 #if defined(HAVE_TCSETATTR)
159 termb.c_lflag &= ~ECHO;
160 tcsetattr(ttyfd, TCSAFLUSH, &termb);
162 #if defined(HAVE_TERMIO_H)
163 termb.c_lflag &= ~ECHO;
164 ioctl(ttyfd, TCSETA, (char *) &termb);
165 #else /* we HAVE_STTY */
166 ttyb.sg_flags &= ~ECHO;
172 static void restore_tty_state()
174 /* restore previous tty echo state */
175 #if defined(HAVE_TCSETATTR)
176 termb.c_lflag = flags;
177 tcsetattr(ttyfd, TCSAFLUSH, &termb);
179 #if defined(HAVE_TERMIO_H)
180 termb.c_lflag = flags;
181 ioctl(ttyfd, TCSETA, (char *) &termb);
182 #else /* we HAVE_STTY */
183 ttyb.sg_flags = flags;
189 static RETSIGTYPE sigint_handler()
192 error(1, 0, "\nCaught signal... bailing out.");
195 /* getpass.c ends here */