diff options
Diffstat (limited to 'crypto/openssh/openbsd-compat/readpassphrase.c')
| -rw-r--r-- | crypto/openssh/openbsd-compat/readpassphrase.c | 78 |
1 files changed, 46 insertions, 32 deletions
diff --git a/crypto/openssh/openbsd-compat/readpassphrase.c b/crypto/openssh/openbsd-compat/readpassphrase.c index 11bd8f646e1d..62b6d0d84380 100644 --- a/crypto/openssh/openbsd-compat/readpassphrase.c +++ b/crypto/openssh/openbsd-compat/readpassphrase.c @@ -1,7 +1,7 @@ -/* $OpenBSD: readpassphrase.c,v 1.18 2005/08/08 08:05:34 espie Exp $ */ +/* $OpenBSD: readpassphrase.c,v 1.22 2010/01/13 10:20:54 dtucker Exp $ */ /* - * Copyright (c) 2000-2002 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 @@ -46,7 +46,7 @@ # define _POSIX_VDISABLE VDISABLE #endif -static volatile sig_atomic_t signo; +static volatile sig_atomic_t signo[_NSIG]; static void handler(int); @@ -54,7 +54,7 @@ char * readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags) { ssize_t nr; - int input, output, save_errno; + int input, output, save_errno, i, need_restart; char ch, *p, *end; struct termios term, oterm; struct sigaction sa, savealrm, saveint, savehup, savequit, saveterm; @@ -67,7 +67,11 @@ readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags) } restart: - signo = 0; + for (i = 0; i < _NSIG; i++) + signo[i] = 0; + nr = -1; + save_errno = 0; + need_restart = 0; /* * Read and write to /dev/tty if available. If not, read from * stdin and write to stderr unless a tty is required. @@ -117,26 +121,30 @@ restart: oterm.c_lflag |= ECHO; } - if (!(flags & RPP_STDIN)) - (void)write(output, prompt, strlen(prompt)); - end = buf + bufsiz - 1; - for (p = buf; (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 = tolower(ch); - if ((flags & RPP_FORCEUPPER)) - ch = toupper(ch); + /* 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) { @@ -152,6 +160,7 @@ restart: (void)sigaction(SIGTERM, &saveterm, NULL); (void)sigaction(SIGTSTP, &savetstp, NULL); (void)sigaction(SIGTTIN, &savettin, NULL); + (void)sigaction(SIGTTOU, &savettou, NULL); if (input != STDIN_FILENO) (void)close(input); @@ -159,20 +168,25 @@ restart: * If we were interrupted by a signal, resend it to ourselves * now that we have restored the signal handlers. */ - if (signo) { - kill(getpid(), signo); - switch (signo) { - case SIGTSTP: - case SIGTTIN: - case SIGTTOU: - goto restart; + for (i = 0; i < _NSIG; i++) { + if (signo[i]) { + kill(getpid(), i); + switch (i) { + case SIGTSTP: + case SIGTTIN: + case SIGTTOU: + need_restart = 1; + } } } + if (need_restart) + goto restart; - errno = save_errno; + if (save_errno) + errno = save_errno; return(nr == -1 ? NULL : buf); } - + #if 0 char * getpass(const char *prompt) @@ -186,6 +200,6 @@ getpass(const char *prompt) static void handler(int s) { - signo = s; + signo[s] = 1; } #endif /* HAVE_READPASSPHRASE */ |