diff options
| -rw-r--r-- | readpassphrase.c | 104 |
1 files changed, 57 insertions, 47 deletions
diff --git a/readpassphrase.c b/readpassphrase.c index 552e390..4b0e7eb 100644 --- a/readpassphrase.c +++ b/readpassphrase.c @@ -1,8 +1,7 @@ -/* $OpenBSD: readpassphrase.c,v 1.24 2013/11/24 23:51:29 deraadt Exp $ */ +/* $OpenBSD: readpassphrase.c,v 1.22 2010/01/13 10:20:54 dtucker Exp $ */ /* - * Copyright (c) 2000-2002, 2007, 2010 - * Todd C. Miller <Todd.Miller@courtesan.com> + * Copyright (c) 2000-2002, 2007 Todd C. Miller <Todd.Miller@courtesan.com> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -21,18 +20,28 @@ * Materiel Command, USAF, under agreement number F39502-99-1-0512. */ +#include <termios.h> +#include <signal.h> #include <ctype.h> -#include <errno.h> #include <fcntl.h> -#include <paths.h> -#include <pwd.h> -#include <signal.h> +#include <errno.h> #include <string.h> -#include <termios.h> #include <unistd.h> +#include <paths.h> #include "readpassphrase.h" +#ifdef TCSASOFT +# define _T_FLUSH (TCSAFLUSH|TCSASOFT) +#else +# define _T_FLUSH (TCSAFLUSH) +#endif + +/* SunOS 4.x which lacks _POSIX_VDISABLE, but has VDISABLE */ +#if !defined(_POSIX_VDISABLE) && defined(VDISABLE) +# define _POSIX_VDISABLE VDISABLE +#endif + static volatile sig_atomic_t signo[_NSIG]; static void handler(int); @@ -74,25 +83,6 @@ restart: } /* - * Turn off echo if possible. - * If we are using a tty but are not the foreground pgrp this will - * generate SIGTTOU, so do it *before* installing the signal handlers. - */ - if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) { - memcpy(&term, &oterm, sizeof(term)); - if (!(flags & RPP_ECHO_ON)) - term.c_lflag &= ~(ECHO | ECHONL); - if (term.c_cc[VSTATUS] != _POSIX_VDISABLE) - term.c_cc[VSTATUS] = _POSIX_VDISABLE; - (void)tcsetattr(input, TCSAFLUSH|TCSASOFT, &term); - } else { - memset(&term, 0, sizeof(term)); - term.c_lflag |= ECHO; - memset(&oterm, 0, sizeof(oterm)); - oterm.c_lflag |= ECHO; - } - - /* * Catch signals that would otherwise cause the user to end * up with echo turned off in the shell. Don't worry about * things like SIGXCPU and SIGVTALRM for now. @@ -110,32 +100,52 @@ restart: (void)sigaction(SIGTTIN, &sa, &savettin); (void)sigaction(SIGTTOU, &sa, &savettou); - if (!(flags & RPP_STDIN)) - (void)write(output, prompt, strlen(prompt)); - end = buf + bufsiz - 1; - p = buf; - while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') { - if (p < end) { - if ((flags & RPP_SEVENBIT)) - ch &= 0x7f; - if (isalpha((unsigned char)ch)) { - if ((flags & RPP_FORCELOWER)) - ch = (char)tolower((unsigned char)ch); - if ((flags & RPP_FORCEUPPER)) - ch = (char)toupper((unsigned char)ch); + /* Turn off echo if possible. */ + if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) { + memcpy(&term, &oterm, sizeof(term)); + if (!(flags & RPP_ECHO_ON)) + term.c_lflag &= ~(ECHO | ECHONL); +#ifdef VSTATUS + if (term.c_cc[VSTATUS] != _POSIX_VDISABLE) + term.c_cc[VSTATUS] = _POSIX_VDISABLE; +#endif + (void)tcsetattr(input, _T_FLUSH, &term); + } else { + memset(&term, 0, sizeof(term)); + term.c_lflag |= ECHO; + memset(&oterm, 0, sizeof(oterm)); + oterm.c_lflag |= ECHO; + } + + /* No I/O if we are already backgrounded. */ + if (signo[SIGTTOU] != 1 && signo[SIGTTIN] != 1) { + if (!(flags & RPP_STDIN)) + (void)write(output, prompt, strlen(prompt)); + end = buf + bufsiz - 1; + p = buf; + while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') { + if (p < end) { + if ((flags & RPP_SEVENBIT)) + ch &= 0x7f; + if (isalpha(ch)) { + if ((flags & RPP_FORCELOWER)) + ch = (char)tolower(ch); + if ((flags & RPP_FORCEUPPER)) + ch = (char)toupper(ch); + } + *p++ = ch; } - *p++ = ch; } + *p = '\0'; + save_errno = errno; + if (!(term.c_lflag & ECHO)) + (void)write(output, "\n", 1); } - *p = '\0'; - save_errno = errno; - if (!(term.c_lflag & ECHO)) - (void)write(output, "\n", 1); /* Restore old terminal settings and signals. */ if (memcmp(&term, &oterm, sizeof(term)) != 0) { - while (tcsetattr(input, TCSAFLUSH|TCSASOFT, &oterm) == -1 && - errno == EINTR && !signo[SIGTTOU]) + while (tcsetattr(input, _T_FLUSH, &oterm) == -1 && + errno == EINTR) continue; } (void)sigaction(SIGALRM, &savealrm, NULL); |