340 lines
11 KiB
C++
340 lines
11 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 2009-2015, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*
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* File gencfu.c
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*/
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//--------------------------------------------------------------------
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//
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// Tool for generating Unicode Confusable data files (.cfu files).
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// .cfu files contain the compiled of the confusable data
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// derived from the Unicode Consortium data described in
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// Unicode UAX 39.
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//
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// Usage: gencfu [options] -r confusables-file.txt -w whole-script-confusables.txt -o output-file.cfu
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//
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// options: -v verbose
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// -? or -h help
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//
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// The input rule filew is are plain text files containing confusable character
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// definitions in the input format defined by Unicode UAX39 for the files
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// confusables.txt and confusablesWholeScript.txt. This source (.txt) format
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// is also accepted direaccepted by ICU spoof detedtors. The
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// files must be encoded in utf-8 format, with or without a BOM.
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//
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//--------------------------------------------------------------------
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#include "unicode/utypes.h"
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#include "unicode/unistr.h"
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#include "unicode/uclean.h"
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#include "unicode/udata.h"
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#include "unicode/putil.h"
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#include "uoptions.h"
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#include "unewdata.h"
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#include "ucmndata.h"
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#include "uspoof_impl.h"
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#include "cmemory.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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U_NAMESPACE_USE
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static char *progName;
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static UOption options[]={
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UOPTION_HELP_H, /* 0 */
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UOPTION_HELP_QUESTION_MARK, /* 1 */
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UOPTION_VERBOSE, /* 2 */
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{ "rules", NULL, NULL, NULL, 'r', UOPT_REQUIRES_ARG, 0 }, /* 3 */
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{ "wsrules", NULL, NULL, NULL, 'w', UOPT_REQUIRES_ARG, 0}, /* 4 */
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{ "out", NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 }, /* 5 */
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UOPTION_ICUDATADIR, /* 6 */
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UOPTION_DESTDIR, /* 7 */
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UOPTION_COPYRIGHT, /* 8 */
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UOPTION_QUIET, /* 9 */
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};
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void usageAndDie(int retCode) {
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printf("Usage: %s [-v] [-options] -r confusablesRules.txt -w wholeScriptConfusables.txt -o output-file\n", progName);
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printf("\tRead in Unicode confusable character definitions and write out the binary data\n"
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"options:\n"
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"\t-h or -? or --help this usage text\n"
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"\t-V or --version show a version message\n"
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"\t-c or --copyright include a copyright notice\n"
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"\t-v or --verbose turn on verbose output\n"
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"\t-q or --quiet do not display warnings and progress\n"
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"\t-i or --icudatadir directory for locating any needed intermediate data files,\n"
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"\t followed by path, defaults to %s\n"
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"\t-d or --destdir destination directory, followed by the path\n",
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u_getDataDirectory());
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exit (retCode);
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}
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#if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
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/* dummy UDataInfo cf. udata.h */
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static UDataInfo dummyDataInfo = {
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sizeof(UDataInfo),
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0,
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U_IS_BIG_ENDIAN,
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U_CHARSET_FAMILY,
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U_SIZEOF_UCHAR,
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0,
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{ 0, 0, 0, 0 }, /* dummy dataFormat */
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{ 0, 0, 0, 0 }, /* dummy formatVersion */
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{ 0, 0, 0, 0 } /* dummy dataVersion */
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};
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#else
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//
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// Set up the ICU data header, defined in ucmndata.h
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//
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DataHeader dh ={
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{sizeof(DataHeader), // Struct MappedData
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0xda,
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0x27},
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{ // struct UDataInfo
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sizeof(UDataInfo), // size
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0, // reserved
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U_IS_BIG_ENDIAN,
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U_CHARSET_FAMILY,
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U_SIZEOF_UCHAR,
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0, // reserved
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{ 0x43, 0x66, 0x75, 0x20 }, // dataFormat="Cfu "
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{ 0xff, 0, 0, 0 }, // formatVersion. Filled in later with values
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// from the builder. The values declared
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// here should never appear in any real data.
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{ 5, 1, 0, 0 } // dataVersion (Unicode version)
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}};
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#endif
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// Forward declaration for function for reading source files.
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static const char *readFile(const char *fileName, int32_t *len);
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//----------------------------------------------------------------------------
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//
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// main for gencfu
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//
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//----------------------------------------------------------------------------
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int main(int argc, char **argv) {
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UErrorCode status = U_ZERO_ERROR;
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const char *confFileName;
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const char *confWSFileName;
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const char *outFileName;
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const char *outDir = NULL;
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const char *copyright = NULL;
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//
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// Pick up and check the command line arguments,
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// using the standard ICU tool utils option handling.
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//
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U_MAIN_INIT_ARGS(argc, argv);
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progName = argv[0];
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argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);
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if(argc<0) {
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// Unrecognized option
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fprintf(stderr, "error in command line argument \"%s\"\n", argv[-argc]);
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usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
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}
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if(options[0].doesOccur || options[1].doesOccur) {
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// -? or -h for help.
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usageAndDie(0);
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}
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if (!(options[3].doesOccur && options[4].doesOccur && options[5].doesOccur)) {
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fprintf(stderr, "confusables file, whole script confusables file and output file must all be specified.\n");
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usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
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}
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confFileName = options[3].value;
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confWSFileName = options[4].value;
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outFileName = options[5].value;
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if (options[6].doesOccur) {
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u_setDataDirectory(options[6].value);
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}
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status = U_ZERO_ERROR;
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/* Combine the directory with the file name */
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if(options[7].doesOccur) {
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outDir = options[7].value;
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}
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if (options[8].doesOccur) {
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copyright = U_COPYRIGHT_STRING;
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}
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UBool quiet = FALSE;
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if (options[9].doesOccur) {
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quiet = TRUE;
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}
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#if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
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// spoof detection data file parsing is dependent on regular expressions.
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// TODO: have the tool return an error status. Requires fixing the ICU data build
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// so that it doesn't abort entirely on that error.
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UNewDataMemory *pData;
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char msg[1024];
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/* write message with just the name */
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sprintf(msg, "gencfu writes dummy %s because of UCONFIG_NO_REGULAR_EXPRESSIONS and/or UCONFIG_NO_NORMALIZATION and/or UCONFIG_NO_FILE_IO, see uconfig.h", outFileName);
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fprintf(stderr, "%s\n", msg);
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/* write the dummy data file */
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pData = udata_create(outDir, NULL, outFileName, &dummyDataInfo, NULL, &status);
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udata_writeBlock(pData, msg, strlen(msg));
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udata_finish(pData, &status);
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return (int)status;
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#else
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/* Initialize ICU */
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u_init(&status);
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if (U_FAILURE(status)) {
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fprintf(stderr, "%s: can not initialize ICU. status = %s\n",
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argv[0], u_errorName(status));
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exit(1);
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}
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status = U_ZERO_ERROR;
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// Read in the confusables source file
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int32_t confusablesLen = 0;
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const char *confusables = readFile(confFileName, &confusablesLen);
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if (confusables == NULL) {
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printf("gencfu: error reading file \"%s\"\n", confFileName);
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exit(-1);
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}
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int32_t wsConfusablesLen = 0;
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const char *wsConfsables = readFile(confWSFileName, &wsConfusablesLen);
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if (wsConfsables == NULL) {
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printf("gencfu: error reading file \"%s\"\n", confFileName);
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exit(-1);
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}
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//
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// Create the Spoof Detector from the source confusables files.
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// This will compile the data.
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//
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UParseError parseError;
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parseError.line = 0;
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parseError.offset = 0;
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int32_t errType;
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USpoofChecker *sc = uspoof_openFromSource(confusables, confusablesLen,
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wsConfsables, wsConfusablesLen,
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&errType, &parseError, &status);
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if (U_FAILURE(status)) {
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const char *errFile =
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(errType == USPOOF_WHOLE_SCRIPT_CONFUSABLE)? confWSFileName : confFileName;
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fprintf(stderr, "gencfu: uspoof_openFromSource error \"%s\" at file %s, line %d, column %d\n",
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u_errorName(status), errFile, (int)parseError.line, (int)parseError.offset);
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exit(status);
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};
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//
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// Get the compiled rule data from the USpoofChecker.
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//
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uint32_t outDataSize;
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uint8_t *outData;
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outDataSize = uspoof_serialize(sc, NULL, 0, &status);
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if (status != U_BUFFER_OVERFLOW_ERROR) {
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fprintf(stderr, "gencfu: uspoof_serialize() returned %s\n", u_errorName(status));
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exit(status);
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}
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status = U_ZERO_ERROR;
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outData = new uint8_t[outDataSize];
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uspoof_serialize(sc, outData, outDataSize, &status);
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// Copy the data format version numbers from the spoof data header into the UDataMemory header.
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uprv_memcpy(dh.info.formatVersion,
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reinterpret_cast<SpoofDataHeader *>(outData)->fFormatVersion,
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sizeof(dh.info.formatVersion));
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//
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// Create the output file
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//
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size_t bytesWritten;
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UNewDataMemory *pData;
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pData = udata_create(outDir, NULL, outFileName, &(dh.info), copyright, &status);
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if(U_FAILURE(status)) {
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fprintf(stderr, "gencfu: Could not open output file \"%s\", \"%s\"\n",
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outFileName, u_errorName(status));
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exit(status);
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}
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// Write the data itself.
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udata_writeBlock(pData, outData, outDataSize);
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// finish up
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bytesWritten = udata_finish(pData, &status);
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if(U_FAILURE(status)) {
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fprintf(stderr, "gencfu: Error %d writing the output file\n", status);
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exit(status);
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}
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if (bytesWritten != outDataSize) {
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fprintf(stderr, "gencfu: Error writing to output file \"%s\"\n", outFileName);
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exit(-1);
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}
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uspoof_close(sc);
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delete [] outData;
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delete [] confusables;
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delete [] wsConfsables;
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u_cleanup();
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if (!quiet) {
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printf("gencfu: tool completed successfully.\n");
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}
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return 0;
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#endif // UCONFIG_NO_REGULAR_EXPRESSIONS
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}
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//
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// Read in a confusables source file
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//
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static const char *readFile(const char *fileName, int32_t *len) {
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char *result;
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long fileSize;
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FILE *file;
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file = fopen(fileName, "rb");
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if( file == 0 ) {
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return NULL;
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}
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fseek(file, 0, SEEK_END);
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fileSize = ftell(file);
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fseek(file, 0, SEEK_SET);
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result = new char[fileSize+10];
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if (result==NULL) {
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fclose(file);
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return NULL;
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}
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long t = fread(result, 1, fileSize, file);
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if (t != fileSize) {
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delete [] result;
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fclose(file);
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return NULL;
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}
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result[fileSize]=0;
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*len = static_cast<int32_t>(fileSize);
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fclose(file);
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return result;
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}
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