+++ /dev/null
-/*
-Copyright (c) 2005-2009, John Hurst
-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. The name of the author may not be used to endorse or promote products
- derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
-*/
- /*! \file kmrandgen.cpp
- \version $Id: kmrandgen.cpp,v 1.8 2009/03/04 17:52:45 jhurst Exp $
- \brief psuedo-random number generation utility
- */
-
-#include "AS_DCP.h"
-#include <KM_fileio.h>
-#include <KM_prng.h>
-#include <ctype.h>
-
-using namespace Kumu;
-
-const ui32_t RandBlockSize = 16;
-const char* PROGRAM_NAME = "kmrandgen";
-
-// Increment the iterator, test for an additional non-option command line argument.
-// Causes the caller to return if there are no remaining arguments or if the next
-// argument begins with '-'.
-#define TEST_EXTRA_ARG(i,c) if ( ++i >= argc || argv[(i)][0] == '-' ) \
- { \
- fprintf(stderr, "Argument not found for option -%c.\n", (c)); \
- return; \
- }
-
-//
-void
-banner(FILE* stream = stdout)
-{
- fprintf(stream, "\n\
-%s (asdcplib %s)\n\n\
-Copyright (c) 2003-2009 John Hurst\n\n\
-%s is part of the asdcp DCP tools package.\n\
-asdcplib may be copied only under the terms of the license found at\n\
-the top of every file in the asdcplib distribution kit.\n\n\
-Specify the -h (help) option for further information about %s\n\n",
- PROGRAM_NAME, Kumu::Version(), PROGRAM_NAME, PROGRAM_NAME);
-}
-
-//
-void
-usage(FILE* stream = stdout)
-{
- fprintf(stream, "\
-USAGE: %s [-b|-B|-c|-x] [-n] [-s <size>] [-v]\n\
-\n\
- %s [-h|-help] [-V]\n\
-\n\
- -b - Output a stream of binary data\n\
- -B - Output a Base64 string\n\
- -c - Output a C-language struct containing the values\n\
- -h | -help - Show help\n\
- -n - Suppress newlines\n\
- -s <size> - Number of random bytes to generate (default 32)\n\
- -v - Verbose. Prints informative messages to stderr\n\
- -V - Show version information\n\
- -x - Output hexadecimal (default)\n\
-\n\
- NOTES: o There is no option grouping, all options must be distinct arguments.\n\
- o All option arguments must be separated from the option by whitespace.\n\
-\n", PROGRAM_NAME, PROGRAM_NAME);
-}
-
-enum OutputFormat_t {
- OF_HEX,
- OF_BINARY,
- OF_BASE64,
- OF_CSTRUCT
-};
-
-//
-class CommandOptions
-{
- CommandOptions();
-
-public:
- bool error_flag; // true if the given options are in error or not complete
- bool no_newline_flag; //
- bool verbose_flag; // true if the verbose option was selected
- bool version_flag; // true if the version display option was selected
- bool help_flag; // true if the help display option was selected
- OutputFormat_t format; //
- ui32_t request_size;
-
- //
- CommandOptions(int argc, const char** argv) :
- error_flag(true), no_newline_flag(false), verbose_flag(false),
- version_flag(false), help_flag(false), format(OF_HEX), request_size(RandBlockSize*2)
- {
- for ( int i = 1; i < argc; i++ )
- {
-
- if ( (strcmp( argv[i], "-help") == 0) )
- {
- help_flag = true;
- continue;
- }
-
- if ( argv[i][0] == '-' && isalpha(argv[i][1]) && argv[i][2] == 0 )
- {
- switch ( argv[i][1] )
- {
- case 'b': format = OF_BINARY; break;
- case 'B': format = OF_BASE64; break;
- case 'c': format = OF_CSTRUCT; break;
- case 'n': no_newline_flag = true; break;
- case 'h': help_flag = true; break;
-
- case 's':
- TEST_EXTRA_ARG(i, 's');
- request_size = abs(atoi(argv[i]));
- break;
-
- case 'v': verbose_flag = true; break;
- case 'V': version_flag = true; break;
- case 'x': format = OF_HEX; break;
-
- default:
- fprintf(stderr, "Unrecognized option: %s\n", argv[i]);
- return;
- }
- }
- else
- {
- fprintf(stderr, "Unrecognized option: %s\n", argv[i]);
- return;
- }
- }
-
- if ( help_flag || version_flag )
- return;
-
- if ( request_size == 0 )
- {
- fprintf(stderr, "Please use a non-zero request size\n");
- return;
- }
-
- error_flag = false;
- }
-};
-
-
-//
-int
-main(int argc, const char** argv)
-{
- CommandOptions Options(argc, argv);
-
- if ( Options.version_flag )
- banner();
-
- if ( Options.help_flag )
- usage();
-
- if ( Options.version_flag || Options.help_flag )
- return 0;
-
- if ( Options.error_flag )
- {
- fprintf(stderr, "There was a problem. Type %s -h for help.\n", PROGRAM_NAME);
- return 3;
- }
-
- FortunaRNG RandGen;
- ByteString Buf(Kumu::Kilobyte);
-
- if ( Options.verbose_flag )
- fprintf(stderr, "Generating %d random byte%s.\n", Options.request_size, (Options.request_size == 1 ? "" : "s"));
-
- if ( Options.format == OF_BINARY )
- {
- if ( KM_FAILURE(Buf.Capacity(Options.request_size)) )
- {
- fprintf(stderr, "randbuf: %s\n", RESULT_ALLOC.Label());
- return 1;
- }
-
- RandGen.FillRandom(Buf.Data(), Options.request_size);
- fwrite((byte_t*)Buf.Data(), 1, Options.request_size, stdout);
- }
- else if ( Options.format == OF_CSTRUCT )
- {
- ui32_t line_count = 0;
- byte_t* p = Buf.Data();
- printf("byte_t rand_buf[%u] = {\n", Options.request_size);
-
- if ( Options.request_size > 128 )
- fputs(" // 0x00000000\n", stdout);
-
- while ( Options.request_size > 0 )
- {
- if ( line_count > 0 && (line_count % (RandBlockSize*8)) == 0 )
- fprintf(stdout, " // 0x%08x\n", line_count);
-
- RandGen.FillRandom(p, RandBlockSize);
- fputc(' ', stdout);
-
- for ( ui32_t i = 0; i < RandBlockSize && Options.request_size > 0; i++, Options.request_size-- )
- printf(" 0x%02x,", p[i]);
-
- fputc('\n', stdout);
- line_count += RandBlockSize;
- }
-
- fputs("};", stdout);
-
- if ( ! Options.no_newline_flag )
- fputc('\n', stdout);
- }
- else if ( Options.format == OF_BASE64 )
- {
- if ( KM_FAILURE(Buf.Capacity(Options.request_size)) )
- {
- fprintf(stderr, "randbuf: %s\n", RESULT_ALLOC.Label());
- return 1;
- }
-
- ByteString Strbuf;
- ui32_t e_len = base64_encode_length(Options.request_size) + 1;
-
- if ( KM_FAILURE(Strbuf.Capacity(e_len)) )
- {
- fprintf(stderr, "strbuf: %s\n", RESULT_ALLOC.Label());
- return 1;
- }
-
- RandGen.FillRandom(Buf.Data(), Options.request_size);
-
- if ( base64encode(Buf.RoData(), Options.request_size, (char*)Strbuf.Data(), Strbuf.Capacity()) == 0 )
- {
- fprintf(stderr, "encode error\n");
- return 2;
- }
-
- fputs((const char*)Strbuf.RoData(), stdout);
-
- if ( ! Options.no_newline_flag )
- fputs("\n", stdout);
- }
- else // OF_HEX
- {
- byte_t* p = Buf.Data();
- char hex_buf[64];
-
- while ( Options.request_size > 0 )
- {
- ui32_t x_len = xmin(Options.request_size, RandBlockSize);
- RandGen.FillRandom(p, RandBlockSize);
- bin2hex(p, x_len, hex_buf, 64);
- fputs(hex_buf, stdout);
-
- if ( ! Options.no_newline_flag )
- fputc('\n', stdout);
-
- Options.request_size -= x_len;
- }
-
- }
-
- return 0;
-}
-
-
-//
-// end kmrandgen.cpp
-//
projects / libdcp.git / blobdiff