diff options
Diffstat (limited to 'package/ead/src/tinysrp/t_getpass.c')
| -rw-r--r-- | package/ead/src/tinysrp/t_getpass.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/package/ead/src/tinysrp/t_getpass.c b/package/ead/src/tinysrp/t_getpass.c new file mode 100644 index 0000000000..6ae7fca4de --- /dev/null +++ b/package/ead/src/tinysrp/t_getpass.c @@ -0,0 +1,191 @@ +/* + * Copyright 1990 - 1995, Julianne Frances Haugh + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Julianne F. Haugh nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "t_defines.h" +#ifdef _WIN32 +#include <windows.h> +#include <io.h> +#endif /* _WIN32 */ +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif /* HAVE_UNISTD_H */ +#include <signal.h> +#include <stdio.h> + +static int sig_caught; +#ifdef HAVE_SIGACTION +static struct sigaction sigact; +#endif + +/*ARGSUSED*/ +static RETSIGTYPE +sig_catch (sig) +int sig; +{ + sig_caught = 1; +} + +_TYPE( int ) +t_getpass (buf, maxlen, prompt) + char *buf; + unsigned maxlen; + const char *prompt; +{ + char *cp; +#ifdef _WIN32 + HANDLE handle = (HANDLE) _get_osfhandle(_fileno(stdin)); + DWORD mode; + + GetConsoleMode( handle, &mode ); + SetConsoleMode( handle, mode & ~ENABLE_ECHO_INPUT ); + + if(fputs(prompt, stdout) == EOF || + fgets(buf, maxlen, stdin) == NULL) { + SetConsoleMode(handle,mode); + return -1; + } + cp = buf + strlen(buf) - 1; + if ( *cp == 0x0a ) + *cp = '\0'; + printf("\n"); + SetConsoleMode(handle,mode); +#else + FILE *fp; + int tty_opened = 0; + +#ifdef HAVE_SIGACTION + struct sigaction old_sigact; +#else + RETSIGTYPE (*old_signal)(); +#endif + TERMIO new_modes; + TERMIO old_modes; + + /* + * set a flag so the SIGINT signal can be re-sent if it + * is caught + */ + + sig_caught = 0; + + /* + * if /dev/tty can't be opened, getpass() needs to read + * from stdin instead. + */ + + if ((fp = fopen ("/dev/tty", "r")) == 0) { + fp = stdin; + setbuf (fp, (char *) 0); + } else { + tty_opened = 1; + } + + /* + * the current tty modes must be saved so they can be + * restored later on. echo will be turned off, except + * for the newline character (BSD has to punt on this) + */ + + if (GTTY (fileno (fp), &new_modes)) + return -1; + + old_modes = new_modes; + +#ifdef HAVE_SIGACTION + sigact.sa_handler = sig_catch; + (void) sigaction (SIGINT, &sigact, &old_sigact); +#else + old_signal = signal (SIGINT, sig_catch); +#endif + +#ifdef USE_SGTTY + new_modes.sg_flags &= ~ECHO; +#else + new_modes.c_iflag &= ~IGNCR; + new_modes.c_iflag |= ICRNL; + new_modes.c_oflag |= OPOST|ONLCR; + new_modes.c_lflag &= ~(ECHO|ECHOE|ECHOK); + new_modes.c_lflag |= ICANON|ECHONL; +#endif + + if (STTY (fileno (fp), &new_modes)) + goto out; + + /* + * the prompt is output, and the response read without + * echoing. the trailing newline must be removed. if + * the fgets() returns an error, a NULL pointer is + * returned. + */ + + if (fputs (prompt, stdout) == EOF) + goto out; + + (void) fflush (stdout); + + if (fgets (buf, maxlen, fp) == buf) { + if ((cp = strchr (buf, '\n'))) + *cp = '\0'; + else + buf[maxlen - 1] = '\0'; + +#ifdef USE_SGTTY + putc ('\n', stdout); +#endif + } + else buf[0] = '\0'; +out: + /* + * the old SIGINT handler is restored after the tty + * modes. then /dev/tty is closed if it was opened in + * the beginning. finally, if a signal was caught it + * is sent to this process for normal processing. + */ + + if (STTY (fileno (fp), &old_modes)) + { memset (buf, 0, maxlen); return -1; } + +#ifdef HAVE_SIGACTION + (void) sigaction (SIGINT, &old_sigact, NULL); +#else + (void) signal (SIGINT, old_signal); +#endif + + if (tty_opened) + (void) fclose (fp); + + if (sig_caught) { + kill (getpid (), SIGINT); + memset (buf, 0, maxlen); + return -1; + } +#endif + + return 0; +} |