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authorCarl Hetherington <cth@carlh.net>2016-01-14 23:54:53 +0000
committerCarl Hetherington <cth@carlh.net>2016-01-14 23:54:53 +0000
commita2374eb06a0f6d391d1d5ae04f50ce5e8076173a (patch)
treea3b83b31e739e7b5312a3a99e9a1c1446ff29bbb /asdcplib/src/asdcp-util.cpp
parent38ff2954f40131a12aa8a037b9fc6c4abd3894b9 (diff)
Use out-of-tree asdcplib-cth
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diff --git a/asdcplib/src/asdcp-util.cpp b/asdcplib/src/asdcp-util.cpp
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-/*
-Copyright (c) 2003-2012, 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 asdcp-util.cpp
- \version $Id: asdcp-util.cpp,v 1.1 2012/02/03 19:49:57 jhurst Exp $
- \brief Utility functions for working with AS-DCP files
-
- This program provides utility features commonly useful in DCP workflows.
-
- For more information about asdcplib, please refer to the header file AS_DCP.h
-*/
-
-#include <KM_fileio.h>
-#include <KM_prng.h>
-#include <AS_DCP.h>
-#include <openssl/sha.h>
-
-using namespace Kumu;
-
-
-//------------------------------------------------------------------------------------------
-//
-// command line option parser class
-
-static const char* PROGRAM_NAME = "asdcp-util"; // program name for messages
-
-// 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) 2003-2012 John Hurst\n\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, ASDCP::Version(), PROGRAM_NAME);
-}
-
-//
-void
-usage(FILE* stream = stdout)
-{
- fprintf(stream, "\
-USAGE: %s [-h|-help] [-V]\n\
-\n\
- %s -d <input-file>\n\
-\n\
- %s -g | -u\n\
-\n\
- %s -u\n\n",
- PROGRAM_NAME, PROGRAM_NAME, PROGRAM_NAME, PROGRAM_NAME);
-
- fprintf(stream, "\
-Major modes:\n\
- -d - Calculate message digest of input file\n\
- -g - Generate a random 16 byte value to stdout\n\
- -h | -help - Show help\n\
- -u - Generate a random UUID value to stdout\n\
- -V - Show version information\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");
-}
-
-//
-enum MajorMode_t
-{
- MMT_NONE,
- MMT_GEN_ID,
- MMT_GEN_KEY,
- MMT_DIGEST,
-};
-
-//
-class CommandOptions
-{
- CommandOptions();
-
-public:
- MajorMode_t mode;
- bool error_flag; // true if the given options are in error or not complete
- bool version_flag; // true if the version display option was selected
- bool help_flag; // true if the help display option was selected
- PathList_t filenames; // list of filenames to be processed
-
- //
- CommandOptions(int argc, const char** argv) :
- mode(MMT_NONE), error_flag(true), version_flag(false), help_flag(false)
- {
- 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]) || isdigit(argv[i][1]) )
- && argv[i][2] == 0 )
- {
- switch ( argv[i][1] )
- {
- case 'd': mode = MMT_DIGEST; break;
- case 'g': mode = MMT_GEN_KEY; break;
- case 'h': help_flag = true; break;
- case 'u': mode = MMT_GEN_ID; break;
- case 'V': version_flag = true; break;
-
- default:
- fprintf(stderr, "Unrecognized option: %s\n", argv[i]);
- return;
- }
- }
- else
- {
- if ( argv[i][0] != '-' )
- {
- filenames.push_back(argv[i]);
- }
- else
- {
- fprintf(stderr, "Unrecognized argument: %s\n", argv[i]);
- return;
- }
- }
- }
-
- if ( help_flag || version_flag )
- return;
-
- if ( ( mode == MMT_DIGEST ) && filenames.empty() )
- {
- fputs("Option requires at least one filename argument.\n", stderr);
- return;
- }
-
- if ( mode == MMT_NONE && ! help_flag && ! version_flag )
- {
- fputs("No operation selected (use one of -[dgu] or -h for help).\n", stderr);
- return;
- }
-
- error_flag = false;
- }
-};
-
-//
-Result_t
-digest_file(const std::string& filename)
-{
- FileReader Reader;
- SHA_CTX Ctx;
- SHA1_Init(&Ctx);
- ByteString Buf(8192);
-
- Result_t result = Reader.OpenRead(filename.c_str());
-
- while ( ASDCP_SUCCESS(result) )
- {
- ui32_t read_count = 0;
- result = Reader.Read(Buf.Data(), Buf.Capacity(), &read_count);
-
- if ( result == RESULT_ENDOFFILE )
- {
- result = RESULT_OK;
- break;
- }
-
- if ( ASDCP_SUCCESS(result) )
- SHA1_Update(&Ctx, Buf.Data(), read_count);
- }
-
- if ( ASDCP_SUCCESS(result) )
- {
- const ui32_t sha_len = 20;
- byte_t bin_buf[sha_len];
- char sha_buf[64];
- SHA1_Final(bin_buf, &Ctx);
-
- fprintf(stdout, "%s %s\n",
- base64encode(bin_buf, sha_len, sha_buf, 64),
- filename.c_str());
- }
-
- return result;
-}
-
-//
-int
-main(int argc, const char** argv)
-{
- Result_t result = RESULT_OK;
- char str_buf[64];
- 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;
- }
-
- if ( Options.mode == MMT_GEN_KEY )
- {
- Kumu::FortunaRNG RNG;
- byte_t bin_buf[ASDCP::KeyLen];
-
- RNG.FillRandom(bin_buf, ASDCP::KeyLen);
- printf("%s\n", Kumu::bin2hex(bin_buf, ASDCP::KeyLen, str_buf, 64));
- }
- else if ( Options.mode == MMT_GEN_ID )
- {
- UUID TmpID;
- Kumu::GenRandomValue(TmpID);
- printf("%s\n", TmpID.EncodeHex(str_buf, 64));
- }
- else if ( Options.mode == MMT_DIGEST )
- {
- PathList_t::iterator i;
-
- for ( i = Options.filenames.begin();
- i != Options.filenames.end() && ASDCP_SUCCESS(result); ++i )
- result = digest_file(*i);
- }
- else
- {
- fprintf(stderr, "Unhandled mode: %d.\n", Options.mode);
- return 6;
- }
-
- if ( ASDCP_FAILURE(result) )
- {
- fputs("Program stopped on error.\n", stderr);
-
- if ( result != RESULT_FAIL )
- {
- fputs(result, stderr);
- fputc('\n', stderr);
- }
-
- return 1;
- }
-
- return 0;
-}
-
-
-//
-// end asdcp-util.cpp
-//