Mercurial > dovecot > core-2.2

annotate src/lib/askpass.c @ 22955:812e5c961328

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author Timo Sirainen <timo.sirainen@dovecot.fi>
date Thu, 03 May 2018 18:33:00 +0300
parents cb108f786fb4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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cb108f786fb4 Updated copyright notices to include the year 2018.
Stephan Bosch <stephan.bosch@dovecot.fi>
parents: 21390
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1 /* Copyright (c) 2006-2018 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "buffer.h"
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5 #include "str.h"
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6 #include "askpass.h"
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7
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8 #include <stdio.h>
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9 #include <termios.h>
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10 #include <fcntl.h>
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11 #include <unistd.h>
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12
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13 static void askpass_str(const char *prompt, buffer_t *pass)
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14 {
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15 struct termios old_tio, tio;
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16 bool tty, restore_tio = FALSE;
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17 char ch;
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18 int fd;
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19
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20 tty = isatty(STDIN_FILENO);
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21 if (tty) {
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22 fputs(prompt, stderr);
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23 fflush(stderr);
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24
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25 fd = open("/dev/tty", O_RDONLY);
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26 if (fd < 0)
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27 i_fatal("open(/dev/tty) failed: %m");
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28
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29 /* turn off echo */
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30 if (tcgetattr(fd, &old_tio) == 0) {
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31 restore_tio = TRUE;
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32 tio = old_tio;
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33 tio.c_lflag &= ~(ECHO | ECHONL);
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34 (void)tcsetattr(fd, TCSAFLUSH, &tio);
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35 }
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36 } else {
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37 /* read it from stdin without showing a prompt */
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38 fd = STDIN_FILENO;
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39 }
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40
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41 /* read the password */
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42 while (read(fd, &ch, 1) > 0) {
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43 if (ch == '\n' || ch == '\r')
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44 break;
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45 buffer_append_c(pass, ch);
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46 }
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47
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48 if (tty) {
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49 if (restore_tio)
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50 (void)tcsetattr(fd, TCSAFLUSH, &old_tio);
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51
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52 fputs("\n", stderr); fflush(stderr);
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53 i_close_fd(&fd);
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54 }
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55 }
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56
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57 void askpass(const char *prompt, char *buf, size_t buf_size)
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58 {
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59 buffer_t str;
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60
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61 buffer_create_from_data(&str, buf, buf_size);
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62 askpass_str(prompt, &str);
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63 buffer_append_c(&str, '\0');
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64 }
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65
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66 const char *t_askpass(const char *prompt)
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67 {
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68 string_t *str = t_str_new(32);
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69
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70 askpass_str(prompt, str);
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71 return str_c(str);
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72 }