mirror of https://github.com/diegocr/libnix.git
130 lines
3.8 KiB
C
130 lines
3.8 KiB
C
/**
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* readpassphrase() implementation for AmigaOS
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* Copyright (c) 2006, Diego Casorran <diegocr at users dot sf dot net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* - Neither the name of the author(s) nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: readpassphrase.c,v 0.1 2006/07/26 20:17:34 diegocr Exp $
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*/
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#include <proto/dos.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#define RPP_ECHO_OFF 0x00 /* Turn off echo (default). */
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#define RPP_ECHO_ON 0x01 /* Leave echo on. */
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#define RPP_REQUIRE_TTY 0x02 /* Fail if there is no tty. */
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#define RPP_FORCELOWER 0x04 /* Force input to lower case. */
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#define RPP_FORCEUPPER 0x08 /* Force input to upper case. */
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#define RPP_SEVENBIT 0x10 /* Strip the high bit from input. */
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#define RPP_STDIN 0x20 /* Read from stdin, not /dev/tty */
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/*****************************************************************************/
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char * readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
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{
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BPTR input, output;
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char ch, *p, *end;
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LONG nr, save_errno;
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if (bufsiz == 0) {
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errno = EINVAL;
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return(NULL);
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}
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__fflush(stderr);
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__fflush(stdout);
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if ((flags & RPP_STDIN) ||
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!(input = output = Open("CONSOLE:", MODE_OLDFILE))) {
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if((flags & RPP_REQUIRE_TTY) && !IsInteractive(Input())) {
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errno = ENOTTY;
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return(NULL);
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}
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input = Input();
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output = Output();
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}
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if(!(flags & RPP_STDIN) && (prompt != NULL))
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{
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Write(output, (STRPTR)prompt, strlen(prompt));
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Flush(output);
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}
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// disable echo
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if(!(flags & RPP_ECHO_ON))
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{
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// plus disable cursor (not really needed but funny ;)
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ULONG crs = 0x9B302070;
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Write(input, (STRPTR) &crs, sizeof(ULONG));
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SetMode( input, 1 );
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}
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end = buf + bufsiz - 1;
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for (p = buf; (nr = Read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r';) {
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if (p < end) {
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if ((flags & RPP_SEVENBIT))
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ch &= 0x7f;
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if (isalpha(ch)) {
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if ((flags & RPP_FORCELOWER))
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ch = tolower(ch);
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if ((flags & RPP_FORCEUPPER))
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ch = toupper(ch);
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}
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*p++ = ch;
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}
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}
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*p = '\0';
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save_errno = IoErr();
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if(!(flags & RPP_ECHO_ON))
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{
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// re-enable cursor
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ULONG crs = 0x9B207000;
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Write(input, (STRPTR) &crs, sizeof(ULONG)-1);
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// re-enable echo (unset RAW)
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SetMode( input, 0 );
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FPutC( output, '\n');
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Flush( output );
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}
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if(input != Input())
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Close(input);
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SetIoErr( save_errno );
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return(nr == -1 ? NULL : buf);
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}
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