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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (C) 2009-2016, International Business Machines
+* Corporation and others. All Rights Reserved.
+**********************************************************************
+*
+* File gencfu.c
+*/
+
+//--------------------------------------------------------------------
+//
+// Tool for generating Unicode Confusable data files (.cfu files).
+// .cfu files contain the compiled of the confusable data
+// derived from the Unicode Consortium data described in
+// Unicode UAX 39.
+//
+// Usage: gencfu [options] -r confusables-file.txt -o output-file.cfu
+//
+// options: -v verbose
+// -? or -h help
+//
+// The input rule filew is are plain text files containing confusable character
+// definitions in the input format defined by Unicode UAX39 for the files
+// confusables.txt. This source (.txt) format
+// is also accepted direaccepted by ICU spoof detedtors. The
+// files must be encoded in utf-8 format, with or without a BOM.
+//
+// The script used to compile confusablesWholeScript.txt into the CFU file
+// until the Unicode consortium deprecated it.
+//
+//--------------------------------------------------------------------
+
+#include "unicode/utypes.h"
+#include "unicode/unistr.h"
+#include "unicode/uclean.h"
+#include "unicode/udata.h"
+#include "unicode/putil.h"
+
+#include "uoptions.h"
+#include "unewdata.h"
+#include "ucmndata.h"
+#include "uspoof_impl.h"
+#include "cmemory.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+U_NAMESPACE_USE
+
+static char *progName;
+static UOption options[]={
+ UOPTION_HELP_H, /* 0 */
+ UOPTION_HELP_QUESTION_MARK, /* 1 */
+ UOPTION_VERBOSE, /* 2 */
+ { "rules", NULL, NULL, NULL, 'r', UOPT_REQUIRES_ARG, 0 }, /* 3 */
+ { "wsrules", NULL, NULL, NULL, 'w', UOPT_REQUIRES_ARG, 0}, /* 4 */ // deprecated
+ { "out", NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 }, /* 5 */
+ UOPTION_ICUDATADIR, /* 6 */
+ UOPTION_DESTDIR, /* 7 */
+ UOPTION_COPYRIGHT, /* 8 */
+ UOPTION_QUIET, /* 9 */
+};
+
+void usageAndDie(int retCode) {
+ printf("Usage: %s [-v] [-options] -r confusablesRules.txt -o output-file\n", progName);
+ printf("\tRead in Unicode confusable character definitions and write out the binary data\n"
+ "options:\n"
+ "\t-h or -? or --help this usage text\n"
+ "\t-V or --version show a version message\n"
+ "\t-c or --copyright include a copyright notice\n"
+ "\t-v or --verbose turn on verbose output\n"
+ "\t-q or --quiet do not display warnings and progress\n"
+ "\t-i or --icudatadir directory for locating any needed intermediate data files,\n"
+ "\t followed by path, defaults to %s\n"
+ "\t-d or --destdir destination directory, followed by the path\n",
+ u_getDataDirectory());
+ exit (retCode);
+}
+
+
+#if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
+
+/* dummy UDataInfo cf. udata.h */
+static UDataInfo dummyDataInfo = {
+ sizeof(UDataInfo),
+ 0,
+
+ U_IS_BIG_ENDIAN,
+ U_CHARSET_FAMILY,
+ U_SIZEOF_UCHAR,
+ 0,
+
+ { 0, 0, 0, 0 }, /* dummy dataFormat */
+ { 0, 0, 0, 0 }, /* dummy formatVersion */
+ { 0, 0, 0, 0 } /* dummy dataVersion */
+};
+
+#else
+
+//
+// Set up the ICU data header, defined in ucmndata.h
+//
+DataHeader dh ={
+ {sizeof(DataHeader), // Struct MappedData
+ 0xda,
+ 0x27},
+
+ { // struct UDataInfo
+ sizeof(UDataInfo), // size
+ 0, // reserved
+ U_IS_BIG_ENDIAN,
+ U_CHARSET_FAMILY,
+ U_SIZEOF_UCHAR,
+ 0, // reserved
+
+ { 0x43, 0x66, 0x75, 0x20 }, // dataFormat="Cfu "
+ { 0xff, 0, 0, 0 }, // formatVersion. Filled in later with values
+ // from the builder. The values declared
+ // here should never appear in any real data.
+ { 5, 1, 0, 0 } // dataVersion (Unicode version)
+ }};
+
+#endif
+
+// Forward declaration for function for reading source files.
+static const char *readFile(const char *fileName, int32_t *len);
+
+//----------------------------------------------------------------------------
+//
+// main for gencfu
+//
+//----------------------------------------------------------------------------
+int main(int argc, char **argv) {
+ UErrorCode status = U_ZERO_ERROR;
+ const char *confFileName;
+ const char *outFileName;
+ const char *outDir = NULL;
+ const char *copyright = NULL;
+
+ //
+ // Pick up and check the command line arguments,
+ // using the standard ICU tool utils option handling.
+ //
+ U_MAIN_INIT_ARGS(argc, argv);
+ progName = argv[0];
+ argc=u_parseArgs(argc, argv, UPRV_LENGTHOF(options), options);
+ if(argc<0) {
+ // Unrecognized option
+ fprintf(stderr, "error in command line argument \"%s\"\n", argv[-argc]);
+ usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
+ }
+
+ if(options[0].doesOccur || options[1].doesOccur) {
+ // -? or -h for help.
+ usageAndDie(0);
+ }
+
+ if (!(options[3].doesOccur && options[5].doesOccur)) {
+ fprintf(stderr, "confusables file and output file must all be specified.\n");
+ usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
+ }
+ confFileName = options[3].value;
+ outFileName = options[5].value;
+
+ if (options[6].doesOccur) {
+ u_setDataDirectory(options[6].value);
+ }
+
+ status = U_ZERO_ERROR;
+
+ /* Combine the directory with the file name */
+ if(options[7].doesOccur) {
+ outDir = options[7].value;
+ }
+ if (options[8].doesOccur) {
+ copyright = U_COPYRIGHT_STRING;
+ }
+
+ UBool quiet = FALSE;
+ if (options[9].doesOccur) {
+ quiet = TRUE;
+ }
+
+#if UCONFIG_NO_REGULAR_EXPRESSIONS || UCONFIG_NO_NORMALIZATION || UCONFIG_NO_FILE_IO
+ // spoof detection data file parsing is dependent on regular expressions.
+ // TODO: have the tool return an error status. Requires fixing the ICU data build
+ // so that it doesn't abort entirely on that error.
+
+ UNewDataMemory *pData;
+ char msg[1024];
+
+ /* write message with just the name */
+ 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);
+ fprintf(stderr, "%s\n", msg);
+
+ /* write the dummy data file */
+ pData = udata_create(outDir, NULL, outFileName, &dummyDataInfo, NULL, &status);
+ udata_writeBlock(pData, msg, strlen(msg));
+ udata_finish(pData, &status);
+ return (int)status;
+
+#else
+ /* Initialize ICU */
+ u_init(&status);
+ if (U_FAILURE(status)) {
+ fprintf(stderr, "%s: can not initialize ICU. status = %s\n",
+ argv[0], u_errorName(status));
+ exit(1);
+ }
+ status = U_ZERO_ERROR;
+
+ // Read in the confusables source file
+
+ int32_t confusablesLen = 0;
+ const char *confusables = readFile(confFileName, &confusablesLen);
+ if (confusables == NULL) {
+ printf("gencfu: error reading file \"%s\"\n", confFileName);
+ exit(-1);
+ }
+
+ //
+ // Create the Spoof Detector from the source confusables files.
+ // This will compile the data.
+ //
+ UParseError parseError;
+ parseError.line = 0;
+ parseError.offset = 0;
+ int32_t errType;
+ USpoofChecker *sc = uspoof_openFromSource(confusables, confusablesLen,
+ NULL, 0,
+ &errType, &parseError, &status);
+ if (U_FAILURE(status)) {
+ fprintf(stderr, "gencfu: uspoof_openFromSource error \"%s\" at file %s, line %d, column %d\n",
+ u_errorName(status), confFileName, (int)parseError.line, (int)parseError.offset);
+ exit(status);
+ };
+
+
+ //
+ // Get the compiled rule data from the USpoofChecker.
+ //
+ uint32_t outDataSize;
+ uint8_t *outData;
+ outDataSize = uspoof_serialize(sc, NULL, 0, &status);
+ if (status != U_BUFFER_OVERFLOW_ERROR) {
+ fprintf(stderr, "gencfu: uspoof_serialize() returned %s\n", u_errorName(status));
+ exit(status);
+ }
+ status = U_ZERO_ERROR;
+ outData = new uint8_t[outDataSize];
+ uspoof_serialize(sc, outData, outDataSize, &status);
+
+ // Copy the data format version numbers from the spoof data header into the UDataMemory header.
+
+ uprv_memcpy(dh.info.formatVersion,
+ reinterpret_cast<SpoofDataHeader *>(outData)->fFormatVersion,
+ sizeof(dh.info.formatVersion));
+
+ //
+ // Create the output file
+ //
+ size_t bytesWritten;
+ UNewDataMemory *pData;
+ pData = udata_create(outDir, NULL, outFileName, &(dh.info), copyright, &status);
+ if(U_FAILURE(status)) {
+ fprintf(stderr, "gencfu: Could not open output file \"%s\", \"%s\"\n",
+ outFileName, u_errorName(status));
+ exit(status);
+ }
+
+
+ // Write the data itself.
+ udata_writeBlock(pData, outData, outDataSize);
+ // finish up
+ bytesWritten = udata_finish(pData, &status);
+ if(U_FAILURE(status)) {
+ fprintf(stderr, "gencfu: Error %d writing the output file\n", status);
+ exit(status);
+ }
+
+ if (bytesWritten != outDataSize) {
+ fprintf(stderr, "gencfu: Error writing to output file \"%s\"\n", outFileName);
+ exit(-1);
+ }
+
+ uspoof_close(sc);
+ delete [] outData;
+ delete [] confusables;
+ u_cleanup();
+ if (!quiet) {
+ printf("gencfu: tool completed successfully.\n");
+ }
+ return 0;
+#endif // UCONFIG_NO_REGULAR_EXPRESSIONS
+}
+
+
+ //
+ // Read in a confusables source file
+ //
+ static const char *readFile(const char *fileName, int32_t *len) {
+ char *result;
+ long fileSize;
+ FILE *file;
+
+ file = fopen(fileName, "rb");
+ if( file == 0 ) {
+ return NULL;
+ }
+ fseek(file, 0, SEEK_END);
+ fileSize = ftell(file);
+ fseek(file, 0, SEEK_SET);
+ result = new char[fileSize+10];
+ if (result==NULL) {
+ fclose(file);
+ return NULL;
+ }
+
+ long t = fread(result, 1, fileSize, file);
+ if (t != fileSize) {
+ delete [] result;
+ fclose(file);
+ return NULL;
+ }
+ result[fileSize]=0;
+ *len = static_cast<int32_t>(fileSize);
+ fclose(file);
+ return result;
+ }
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