X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fui%2Fui_openssl.c;h=78b88c07f1078e114421fa25fa4019d862ded399;hp=90e39a21f75f0fcdda763fca5899ceff4c948922;hb=HEAD;hpb=18edbe6519bd5b738bf410b23f437df3005526e3 diff --git a/crypto/ui/ui_openssl.c b/crypto/ui/ui_openssl.c index 90e39a21f7..544415e5b1 100644 --- a/crypto/ui/ui_openssl.c +++ b/crypto/ui/ui_openssl.c @@ -1,72 +1,70 @@ /* - * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved. * - * Licensed under the OpenSSL license (the "License"). You may not use + * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ +#include "internal/e_os.h" #include #include +#include +#ifndef OPENSSL_NO_UI_CONSOLE /* * need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc * [maybe others?], because it masks interfaces not discussed in standard, * sigaction and fileno included. -pedantic would be more appropriate for the * intended purposes, but we can't prevent users from adding -ansi. */ -#if defined(OPENSSL_SYS_VXWORKS) -# include -#endif +# if defined(OPENSSL_SYS_VXWORKS) +# include +# endif -#if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS) -# ifndef _POSIX_C_SOURCE -# define _POSIX_C_SOURCE 2 +# if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS) +# ifndef _POSIX_C_SOURCE +# define _POSIX_C_SOURCE 2 +# endif # endif -#endif -#include -#include -#include -#include - -#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) -# ifdef OPENSSL_UNISTD -# include OPENSSL_UNISTD -# else +# include +# include +# include +# include + +# if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) # include -# endif /* * If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX * system and have sigaction and termios. */ -# if defined(_POSIX_VERSION) +# if defined(_POSIX_VERSION) && _POSIX_VERSION>=199309L -# define SIGACTION -# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) -# define TERMIOS -# endif +# define SIGACTION +# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) +# define TERMIOS +# endif +# endif # endif -#endif -/* 06-Apr-92 Luke Brennan Support for VMS */ -#include "ui_locl.h" -#include "internal/cryptlib.h" +# include "ui_local.h" +# include "internal/cryptlib.h" -#ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ -# include -# ifdef __DECC -# pragma message disable DOLLARID +# ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ +# include +# ifdef __DECC +# pragma message disable DOLLARID +# endif # endif -#endif -#ifdef WIN_CONSOLE_BUG -# include -# ifndef OPENSSL_SYS_WINCE -# include +# ifdef WIN_CONSOLE_BUG +# include +# ifndef OPENSSL_SYS_WINCE +# include +# endif # endif -#endif /* * There are 6 types of terminal interface supported, TERMIO, TERMIOS, VMS, @@ -77,84 +75,90 @@ * systems that require something different. * * Note: we do not use SGTTY unless it's defined by the configuration. We - * may eventually opt to remove it's use entirely. + * may eventually opt to remove its use entirely. */ -#if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) +# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) -# if defined(_LIBC) -# undef TERMIOS -# define TERMIO -# undef SGTTY +# if defined(_LIBC) +# undef TERMIOS +# define TERMIO +# undef SGTTY /* * We know that VMS, MSDOS, VXWORKS, use entirely other mechanisms. */ -# elif !defined(OPENSSL_SYS_VMS) \ - && !defined(OPENSSL_SYS_MSDOS) \ - && !defined(OPENSSL_SYS_VXWORKS) -# define TERMIOS -# undef TERMIO -# undef SGTTY +# elif !defined(OPENSSL_SYS_VMS) \ + && !defined(OPENSSL_SYS_MSDOS) \ + && !defined(OPENSSL_SYS_VXWORKS) +# define TERMIOS +# undef TERMIO +# undef SGTTY +# endif + # endif -#endif +# if defined(OPENSSL_SYS_VXWORKS) +# undef TERMIOS +# undef TERMIO +# undef SGTTY +# endif -#ifdef TERMIOS -# include -# define TTY_STRUCT struct termios -# define TTY_FLAGS c_lflag -# define TTY_get(tty,data) tcgetattr(tty,data) -# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) -#endif +# ifdef TERMIOS +# include +# define TTY_STRUCT struct termios +# define TTY_FLAGS c_lflag +# define TTY_get(tty,data) tcgetattr(tty,data) +# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) +# endif -#ifdef TERMIO -# include -# define TTY_STRUCT struct termio -# define TTY_FLAGS c_lflag -# define TTY_get(tty,data) ioctl(tty,TCGETA,data) -# define TTY_set(tty,data) ioctl(tty,TCSETA,data) -#endif +# ifdef TERMIO +# include +# define TTY_STRUCT struct termio +# define TTY_FLAGS c_lflag +# define TTY_get(tty,data) ioctl(tty,TCGETA,data) +# define TTY_set(tty,data) ioctl(tty,TCSETA,data) +# endif -#ifdef SGTTY -# include -# define TTY_STRUCT struct sgttyb -# define TTY_FLAGS sg_flags -# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) -# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) -#endif +# ifdef SGTTY +# include +# define TTY_STRUCT struct sgttyb +# define TTY_FLAGS sg_flags +# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) +# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) +# endif -#if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) -# include -#endif +# if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && ! (defined(OPENSSL_SYS_TANDEM) && defined(_SPT_MODEL_)) +# include +# endif -#ifdef OPENSSL_SYS_MSDOS -# include -#endif +# ifdef OPENSSL_SYS_MSDOS +# include +# endif -#ifdef OPENSSL_SYS_VMS -# include -# include -# include -# include +# ifdef OPENSSL_SYS_VMS +# include +# include +# include +# include struct IOSB { short iosb$w_value; short iosb$w_count; long iosb$l_info; }; -#endif +# endif -#ifndef NX509_SIG -# define NX509_SIG 32 -#endif +# ifndef NX509_SIG +# define NX509_SIG 32 +# endif /* Define globals. They are protected by a lock */ -#ifdef SIGACTION +# ifdef SIGACTION static struct sigaction savsig[NX509_SIG]; -#else +# else static void (*savsig[NX509_SIG]) (int); -#endif +# endif -#ifdef OPENSSL_SYS_VMS +# ifdef OPENSSL_SYS_VMS static struct IOSB iosb; static $DESCRIPTOR(terminal, "TT"); static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this @@ -162,26 +166,26 @@ static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this * structures? */ static long status; static unsigned short channel = 0; -#elif defined(_WIN32) && !defined(_WIN32_WCE) +# elif defined(_WIN32) && !defined(_WIN32_WCE) static DWORD tty_orig, tty_new; -#else -# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) +# else +# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) static TTY_STRUCT tty_orig, tty_new; +# endif # endif -#endif static FILE *tty_in, *tty_out; static int is_a_tty; /* Declare static functions */ -#if !defined(OPENSSL_SYS_WINCE) +# if !defined(OPENSSL_SYS_WINCE) static int read_till_nl(FILE *); static void recsig(int); static void pushsig(void); static void popsig(void); -#endif -#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32) +# endif +# if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32) static int noecho_fgets(char *buf, int size, FILE *tty); -#endif +# endif static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl); static int read_string(UI *ui, UI_STRING *uis); @@ -192,22 +196,6 @@ static int echo_console(UI *ui); static int noecho_console(UI *ui); static int close_console(UI *ui); -static UI_METHOD ui_openssl = { - "OpenSSL default user interface", - open_console, - write_string, - NULL, /* No flusher is needed for command lines */ - read_string, - close_console, - NULL -}; - -/* The method with all the built-in thingies */ -UI_METHOD *UI_OpenSSL(void) -{ - return &ui_openssl; -} - /* * The following function makes sure that info and error strings are printed * before any prompt. @@ -268,11 +256,11 @@ static int read_string(UI *ui, UI_STRING *uis) return 1; } -#if !defined(OPENSSL_SYS_WINCE) +# if !defined(OPENSSL_SYS_WINCE) /* Internal functions to read a string without echoing */ static int read_till_nl(FILE *in) { -# define SIZE 4 +# define SIZE 4 char buf[SIZE + 1]; do { @@ -283,7 +271,7 @@ static int read_till_nl(FILE *in) } static volatile sig_atomic_t intr_signal; -#endif +# endif static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) { @@ -291,7 +279,7 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) int ok; char result[BUFSIZ]; int maxsize = BUFSIZ - 1; -#if !defined(OPENSSL_SYS_WINCE) +# if !defined(OPENSSL_SYS_WINCE) char *p = NULL; int echo_eol = !echo; @@ -307,10 +295,10 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) ps = 2; result[0] = '\0'; -# if defined(_WIN32) +# if defined(_WIN32) if (is_a_tty) { DWORD numread; -# if defined(CP_UTF8) +# if defined(CP_UTF8) if (GetEnvironmentVariableW(L"OPENSSL_WIN32_UTF8", NULL, 0) != 0) { WCHAR wresult[BUFSIZ]; @@ -330,7 +318,7 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) OPENSSL_cleanse(wresult, sizeof(wresult)); } } else -# endif +# endif if (ReadConsoleA(GetStdHandle(STD_INPUT_HANDLE), result, maxsize, &numread, NULL)) { if (numread >= 2 && @@ -342,12 +330,12 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) p = result; } } else -# elif defined(OPENSSL_SYS_MSDOS) +# elif defined(OPENSSL_SYS_MSDOS) if (!echo) { noecho_fgets(result, maxsize, tty_in); p = result; /* FIXME: noecho_fgets doesn't return errors */ } else -# endif +# endif p = fgets(result, maxsize, tty_in); if (p == NULL) goto error; @@ -373,9 +361,9 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) if (ps >= 1) popsig(); -#else +# else ok = 1; -#endif +# endif OPENSSL_cleanse(result, BUFSIZ); return ok; @@ -384,13 +372,14 @@ static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) /* Internal functions to open, handle and close a channel to the console. */ static int open_console(UI *ui) { - CRYPTO_THREAD_write_lock(ui->lock); + if (!CRYPTO_THREAD_write_lock(ui->lock)) + return 0; is_a_tty = 1; -#if defined(OPENSSL_SYS_VXWORKS) +# if defined(OPENSSL_SYS_VXWORKS) tty_in = stdin; tty_out = stderr; -#elif defined(_WIN32) && !defined(_WIN32_WCE) +# elif defined(_WIN32) && !defined(_WIN32_WCE) if ((tty_out = fopen("conout$", "w")) == NULL) tty_out = stderr; @@ -401,59 +390,87 @@ static int open_console(UI *ui) if ((tty_in = fopen("conin$", "r")) == NULL) tty_in = stdin; } -#else -# ifdef OPENSSL_SYS_MSDOS -# define DEV_TTY "con" # else -# define DEV_TTY "/dev/tty" -# endif +# ifdef OPENSSL_SYS_MSDOS +# define DEV_TTY "con" +# else +# define DEV_TTY "/dev/tty" +# endif if ((tty_in = fopen(DEV_TTY, "r")) == NULL) tty_in = stdin; if ((tty_out = fopen(DEV_TTY, "w")) == NULL) tty_out = stderr; -#endif +# endif -#if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) +# if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) if (TTY_get(fileno(tty_in), &tty_orig) == -1) { -# ifdef ENOTTY +# ifdef ENOTTY if (errno == ENOTTY) is_a_tty = 0; else -# endif -# ifdef EINVAL +# endif +# ifdef EINVAL /* - * Ariel Glenn ariel@columbia.edu reports that solaris can return - * EINVAL instead. This should be ok + * Ariel Glenn reports that solaris can return EINVAL instead. + * This should be ok */ if (errno == EINVAL) is_a_tty = 0; else -# endif -# ifdef ENODEV +# endif +# ifdef ENXIO + /* + * Solaris can return ENXIO. + * This should be ok + */ + if (errno == ENXIO) + is_a_tty = 0; + else +# endif +# ifdef EIO + /* + * Linux can return EIO. + * This should be ok + */ + if (errno == EIO) + is_a_tty = 0; + else +# endif +# ifdef EPERM + /* + * Linux can return EPERM (Operation not permitted), + * e.g. if a daemon executes openssl via fork()+execve() + * This should be ok + */ + if (errno == EPERM) + is_a_tty = 0; + else +# endif +# ifdef ENODEV /* * MacOS X returns ENODEV (Operation not supported by device), * which seems appropriate. */ if (errno == ENODEV) - is_a_tty = 0; + is_a_tty = 0; else -# endif +# endif { - char tmp_num[10]; - BIO_snprintf(tmp_num, sizeof(tmp_num) - 1, "%d", errno); - UIerr(UI_F_OPEN_CONSOLE, UI_R_UNKNOWN_TTYGET_ERRNO_VALUE); - ERR_add_error_data(2, "errno=", tmp_num); - + ERR_raise_data(ERR_LIB_UI, UI_R_UNKNOWN_TTYGET_ERRNO_VALUE, + "errno=%d", errno); return 0; } } -#endif -#ifdef OPENSSL_SYS_VMS +# endif +# ifdef OPENSSL_SYS_VMS status = sys$assign(&terminal, &channel, 0, 0); /* if there isn't a TT device, something is very wrong */ - if (status != SS$_NORMAL) + if (status != SS$_NORMAL) { + ERR_raise_data(ERR_LIB_UI, UI_R_SYSASSIGN_ERROR, + "status=%%X%08X", status); return 0; + } status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, 0, 0); @@ -461,175 +478,183 @@ static int open_console(UI *ui) /* If IO$_SENSEMODE doesn't work, this is not a terminal device */ if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) is_a_tty = 0; -#endif +# endif return 1; } static int noecho_console(UI *ui) { -#ifdef TTY_FLAGS +# ifdef TTY_FLAGS memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); tty_new.TTY_FLAGS &= ~ECHO; -#endif +# endif -#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) +# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) return 0; -#endif -#ifdef OPENSSL_SYS_VMS +# endif +# ifdef OPENSSL_SYS_VMS if (is_a_tty) { tty_new[0] = tty_orig[0]; tty_new[1] = tty_orig[1] | TT$M_NOECHO; tty_new[2] = tty_orig[2]; status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0, 0); - if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) + if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) { + ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR, + "status=%%X%08X, iosb.iosb$w_value=%%X%08X", + status, iosb.iosb$w_value); return 0; + } } -#endif -#if defined(_WIN32) && !defined(_WIN32_WCE) +# endif +# if defined(_WIN32) && !defined(_WIN32_WCE) if (is_a_tty) { tty_new = tty_orig; tty_new &= ~ENABLE_ECHO_INPUT; SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new); } -#endif +# endif return 1; } static int echo_console(UI *ui) { -#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) +# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); - tty_new.TTY_FLAGS |= ECHO; -#endif - -#if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1)) return 0; -#endif -#ifdef OPENSSL_SYS_VMS +# endif +# ifdef OPENSSL_SYS_VMS if (is_a_tty) { tty_new[0] = tty_orig[0]; - tty_new[1] = tty_orig[1] & ~TT$M_NOECHO; + tty_new[1] = tty_orig[1]; tty_new[2] = tty_orig[2]; status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12, 0, 0, 0, 0); - if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) + if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) { + ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR, + "status=%%X%08X, iosb.iosb$w_value=%%X%08X", + status, iosb.iosb$w_value); return 0; + } } -#endif -#if defined(_WIN32) && !defined(_WIN32_WCE) +# endif +# if defined(_WIN32) && !defined(_WIN32_WCE) if (is_a_tty) { tty_new = tty_orig; - tty_new |= ENABLE_ECHO_INPUT; SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new); } -#endif +# endif return 1; } static int close_console(UI *ui) { + int ret = 1; + if (tty_in != stdin) fclose(tty_in); if (tty_out != stderr) fclose(tty_out); -#ifdef OPENSSL_SYS_VMS +# ifdef OPENSSL_SYS_VMS status = sys$dassgn(channel); - if (status != SS$_NORMAL) - return 0; -#endif + if (status != SS$_NORMAL) { + ERR_raise_data(ERR_LIB_UI, UI_R_SYSDASSGN_ERROR, + "status=%%X%08X", status); + ret = 0; + } +# endif CRYPTO_THREAD_unlock(ui->lock); - return 1; + return ret; } -#if !defined(OPENSSL_SYS_WINCE) +# if !defined(OPENSSL_SYS_WINCE) /* Internal functions to handle signals and act on them */ static void pushsig(void) { -# ifndef OPENSSL_SYS_WIN32 +# ifndef OPENSSL_SYS_WIN32 int i; -# endif -# ifdef SIGACTION +# endif +# ifdef SIGACTION struct sigaction sa; memset(&sa, 0, sizeof(sa)); sa.sa_handler = recsig; -# endif +# endif -# ifdef OPENSSL_SYS_WIN32 +# ifdef OPENSSL_SYS_WIN32 savsig[SIGABRT] = signal(SIGABRT, recsig); savsig[SIGFPE] = signal(SIGFPE, recsig); savsig[SIGILL] = signal(SIGILL, recsig); savsig[SIGINT] = signal(SIGINT, recsig); savsig[SIGSEGV] = signal(SIGSEGV, recsig); savsig[SIGTERM] = signal(SIGTERM, recsig); -# else +# else for (i = 1; i < NX509_SIG; i++) { -# ifdef SIGUSR1 +# ifdef SIGUSR1 if (i == SIGUSR1) continue; -# endif -# ifdef SIGUSR2 +# endif +# ifdef SIGUSR2 if (i == SIGUSR2) continue; -# endif -# ifdef SIGKILL +# endif +# ifdef SIGKILL if (i == SIGKILL) /* We can't make any action on that. */ continue; -# endif -# ifdef SIGACTION +# endif +# ifdef SIGACTION sigaction(i, &sa, &savsig[i]); -# else +# else savsig[i] = signal(i, recsig); -# endif +# endif } -# endif +# endif -# ifdef SIGWINCH +# ifdef SIGWINCH signal(SIGWINCH, SIG_DFL); -# endif +# endif } static void popsig(void) { -# ifdef OPENSSL_SYS_WIN32 +# ifdef OPENSSL_SYS_WIN32 signal(SIGABRT, savsig[SIGABRT]); signal(SIGFPE, savsig[SIGFPE]); signal(SIGILL, savsig[SIGILL]); signal(SIGINT, savsig[SIGINT]); signal(SIGSEGV, savsig[SIGSEGV]); signal(SIGTERM, savsig[SIGTERM]); -# else +# else int i; for (i = 1; i < NX509_SIG; i++) { -# ifdef SIGUSR1 +# ifdef SIGUSR1 if (i == SIGUSR1) continue; -# endif -# ifdef SIGUSR2 +# endif +# ifdef SIGUSR2 if (i == SIGUSR2) continue; -# endif -# ifdef SIGACTION +# endif +# ifdef SIGACTION sigaction(i, &savsig[i], NULL); -# else +# else signal(i, savsig[i]); -# endif +# endif } -# endif +# endif } static void recsig(int i) { intr_signal = i; } -#endif +# endif /* Internal functions specific for Windows */ -#if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32) +# if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32) static int noecho_fgets(char *buf, int size, FILE *tty) { int i; @@ -642,11 +667,11 @@ static int noecho_fgets(char *buf, int size, FILE *tty) break; } size--; -# if defined(_WIN32) +# if defined(_WIN32) i = _getch(); -# else +# else i = getch(); -# endif +# endif if (i == '\r') i = '\n'; *(p++) = i; @@ -655,7 +680,7 @@ static int noecho_fgets(char *buf, int size, FILE *tty) break; } } -# ifdef WIN_CONSOLE_BUG +# ifdef WIN_CONSOLE_BUG /* * Win95 has several evil console bugs: one of these is that the last * character read using getch() is passed to the next read: this is @@ -667,7 +692,41 @@ static int noecho_fgets(char *buf, int size, FILE *tty) inh = GetStdHandle(STD_INPUT_HANDLE); FlushConsoleInputBuffer(inh); } +# endif + return strlen(buf); +} # endif - return (strlen(buf)); + +static UI_METHOD ui_openssl = { + "OpenSSL default user interface", + open_console, + write_string, + NULL, /* No flusher is needed for command lines */ + read_string, + close_console, + NULL +}; + +/* The method with all the built-in console thingies */ +UI_METHOD *UI_OpenSSL(void) +{ + return &ui_openssl; } + +static const UI_METHOD *default_UI_meth = &ui_openssl; + +#else + +static const UI_METHOD *default_UI_meth = NULL; + #endif + +void UI_set_default_method(const UI_METHOD *meth) +{ + default_UI_meth = meth; +} + +const UI_METHOD *UI_get_default_method(void) +{ + return default_UI_meth; +}