/* crypto/ui/ui_openssl.c -*- mode:C; c-file-style: "eay" -*- */ /* * Written by Richard Levitte (richard@levitte.org) and others for the * OpenSSL project 2001. */ /* ==================================================================== * Copyright (c) 2001 The OpenSSL Project. 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. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * openssl-core@openssl.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.openssl.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED 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 THE OpenSSL PROJECT OR * ITS 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. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ /*- * The lowest level part of this file was previously in crypto/des/read_pwd.c, * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 THE AUTHOR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include /* * 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. */ #define _POSIX_C_SOURCE 1 #include #include #include #include #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) # ifdef OPENSSL_UNISTD # include OPENSSL_UNISTD # else # 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) # define SIGACTION # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY) # define TERMIOS # endif # endif #endif #ifdef WIN16TTY # undef OPENSSL_SYS_WIN16 # undef WIN16 # undef _WINDOWS # include #endif /* 06-Apr-92 Luke Brennan Support for VMS */ #include "ui_locl.h" #include "cryptlib.h" #ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ # include # ifdef __DECC # pragma message disable DOLLARID # endif #endif #ifdef WIN_CONSOLE_BUG # include # ifndef OPENSSL_SYS_WINCE # include # endif #endif /* * There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS, * MSDOS and SGTTY */ #if defined(__sgi) && !defined(TERMIOS) # define TERMIOS # undef TERMIO # undef SGTTY #endif #if defined(linux) && !defined(TERMIO) # undef TERMIOS # define TERMIO # undef SGTTY #endif #ifdef _LIBC # undef TERMIOS # define TERMIO # undef SGTTY #endif #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE) # undef TERMIOS # undef TERMIO # define SGTTY #endif #if defined(OPENSSL_SYS_VXWORKS) # undef TERMIOS # undef TERMIO # undef SGTTY #endif #if defined(OPENSSL_SYS_NETWARE) # undef TERMIOS # undef TERMIO # undef SGTTY #endif #ifdef TERMIOS # include # define TTY_STRUCT struct termios # define TTY_FLAGS c_lflag # define TTY_get(tty,data) tcgetattr(tty,data) # define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) #endif #ifdef TERMIO # include # define TTY_STRUCT struct termio # define TTY_FLAGS c_lflag # define TTY_get(tty,data) ioctl(tty,TCGETA,data) # define TTY_set(tty,data) ioctl(tty,TCSETA,data) #endif #ifdef SGTTY # include # define TTY_STRUCT struct sgttyb # define TTY_FLAGS sg_flags # define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) # define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) #endif #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS) # include #endif #ifdef OPENSSL_SYS_MSDOS # include #endif #ifdef OPENSSL_SYS_VMS # include # include # include # include struct IOSB { short iosb$w_value; short iosb$w_count; long iosb$l_info; }; #endif #ifdef OPENSSL_SYS_SUNOS typedef int sig_atomic_t; #endif #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE) /* * This one needs work. As a matter of fact the code is unoperational * and this is only a trick to get it compiled. * */ # define TTY_STRUCT int #endif #ifndef NX509_SIG # define NX509_SIG 32 #endif /* Define globals. They are protected by a lock */ #ifdef SIGACTION static struct sigaction savsig[NX509_SIG]; #else static void (*savsig[NX509_SIG]) (int); #endif #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 * will always suffice for the actual * structures? */ static long status; static unsigned short channel = 0; #else # if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) static TTY_STRUCT tty_orig, tty_new; # endif #endif static FILE *tty_in, *tty_out; static int is_a_tty; /* Declare static functions */ #if !defined(OPENSSL_SYS_WIN16) && !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(OPENSSL_SYS_WIN16) static int noecho_fgets(char *buf, int size, FILE *tty); #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); static int write_string(UI *ui, UI_STRING *uis); static int open_console(UI *ui); 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. */ static int write_string(UI *ui, UI_STRING *uis) { switch (UI_get_string_type(uis)) { case UIT_ERROR: case UIT_INFO: fputs(UI_get0_output_string(uis), tty_out); fflush(tty_out); break; default: break; } return 1; } static int read_string(UI *ui, UI_STRING *uis) { int ok = 0; switch (UI_get_string_type(uis)) { case UIT_BOOLEAN: fputs(UI_get0_output_string(uis), tty_out); fputs(UI_get0_action_string(uis), tty_out); fflush(tty_out); return read_string_inner(ui, uis, UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0); case UIT_PROMPT: fputs(UI_get0_output_string(uis), tty_out); fflush(tty_out); return read_string_inner(ui, uis, UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1); case UIT_VERIFY: fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis)); fflush(tty_out); if ((ok = read_string_inner(ui, uis, UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1)) <= 0) return ok; if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) { fprintf(tty_out, "Verify failure\n"); fflush(tty_out); return 0; } break; default: break; } return 1; } #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) /* Internal functions to read a string without echoing */ static int read_till_nl(FILE *in) { # define SIZE 4 char buf[SIZE + 1]; do { if (!fgets(buf, SIZE, in)) return 0; } while (strchr(buf, '\n') == NULL); return 1; } static volatile sig_atomic_t intr_signal; #endif static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl) { static int ps; int ok; char result[BUFSIZ]; int maxsize = BUFSIZ - 1; #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) char *p; intr_signal = 0; ok = 0; ps = 0; pushsig(); ps = 1; if (!echo && !noecho_console(ui)) goto error; ps = 2; result[0] = '\0'; # ifdef OPENSSL_SYS_MSDOS if (!echo) { noecho_fgets(result, maxsize, tty_in); p = result; /* FIXME: noecho_fgets doesn't return errors */ } else p = fgets(result, maxsize, tty_in); # else p = fgets(result, maxsize, tty_in); # endif if (!p) goto error; if (feof(tty_in)) goto error; if (ferror(tty_in)) goto error; if ((p = (char *)strchr(result, '\n')) != NULL) { if (strip_nl) *p = '\0'; } else if (!read_till_nl(tty_in)) goto error; if (UI_set_result(ui, uis, result) >= 0) ok = 1; error: if (intr_signal == SIGINT) ok = -1; if (!echo) fprintf(tty_out, "\n"); if (ps >= 2 && !echo && !echo_console(ui)) ok = 0; if (ps >= 1) popsig(); #else ok = 1; #endif OPENSSL_cleanse(result, BUFSIZ); return ok; } /* Internal functions to open, handle and close a channel to the console. */ static int open_console(UI *ui) { CRYPTO_w_lock(CRYPTO_LOCK_UI); is_a_tty = 1; #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) tty_in = stdin; tty_out = stderr; #else # 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 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) if (TTY_get(fileno(tty_in), &tty_orig) == -1) { # ifdef ENOTTY if (errno == ENOTTY) is_a_tty = 0; else # endif # ifdef EINVAL /* * Ariel Glenn ariel@columbia.edu reports that solaris can return * EINVAL instead. This should be ok */ if (errno == EINVAL) is_a_tty = 0; else # endif return 0; } #endif #ifdef OPENSSL_SYS_VMS status = sys$assign(&terminal, &channel, 0, 0); if (status != SS$_NORMAL) return 0; status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, 0, 0); if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) return 0; #endif return 1; } static int noecho_console(UI *ui) { #ifdef TTY_FLAGS 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 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)) return 0; #endif return 1; } static int echo_console(UI *ui) { #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 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)) return 0; #endif return 1; } static int close_console(UI *ui) { if (tty_in != stdin) fclose(tty_in); if (tty_out != stderr) fclose(tty_out); #ifdef OPENSSL_SYS_VMS status = sys$dassgn(channel); #endif CRYPTO_w_unlock(CRYPTO_LOCK_UI); return 1; } #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) /* Internal functions to handle signals and act on them */ static void pushsig(void) { # ifndef OPENSSL_SYS_WIN32 int i; # endif # ifdef SIGACTION struct sigaction sa; memset(&sa, 0, sizeof sa); sa.sa_handler = recsig; # endif # 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 for (i = 1; i < NX509_SIG; i++) { # ifdef SIGUSR1 if (i == SIGUSR1) continue; # endif # ifdef SIGUSR2 if (i == SIGUSR2) continue; # endif # ifdef SIGKILL if (i == SIGKILL) /* We can't make any action on that. */ continue; # endif # ifdef SIGACTION sigaction(i, &sa, &savsig[i]); # else savsig[i] = signal(i, recsig); # endif } # endif # ifdef SIGWINCH signal(SIGWINCH, SIG_DFL); # endif } static void popsig(void) { # 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 int i; for (i = 1; i < NX509_SIG; i++) { # ifdef SIGUSR1 if (i == SIGUSR1) continue; # endif # ifdef SIGUSR2 if (i == SIGUSR2) continue; # endif # ifdef SIGACTION sigaction(i, &savsig[i], NULL); # else signal(i, savsig[i]); # endif } # endif } static void recsig(int i) { intr_signal = i; } #endif /* Internal functions specific for Windows */ #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE) static int noecho_fgets(char *buf, int size, FILE *tty) { int i; char *p; p = buf; for (;;) { if (size == 0) { *p = '\0'; break; } size--; # ifdef WIN16TTY i = _inchar(); # elif defined(_WIN32) i = _getch(); # else i = getch(); # endif if (i == '\r') i = '\n'; *(p++) = i; if (i == '\n') { *p = '\0'; break; } } # 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 * usually a CR so this can be trouble. No STDIO fix seems to work but * flushing the console appears to do the trick. */ { HANDLE inh; inh = GetStdHandle(STD_INPUT_HANDLE); FlushConsoleInputBuffer(inh); } # endif return (strlen(buf)); } #endif