/*
**********************************************************************
* Copyright (C) 2009-2011, 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 -w whole-script-confusables.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 and confusablesWholeScript.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.
//
//--------------------------------------------------------------------
#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 */
{ "out", NULL, NULL, NULL, 'o', UOPT_REQUIRES_ARG, 0 }, /* 5 */
UOPTION_ICUDATADIR, /* 6 */
UOPTION_DESTDIR, /* 7 */
UOPTION_COPYRIGHT, /* 8 */
};
void usageAndDie(int retCode) {
printf("Usage: %s [-v] [-options] -r confusablesRules.txt -w wholeScriptConfusables.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-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 *confWSFileName;
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, sizeof(options)/sizeof(options[0]), 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[4].doesOccur && options[5].doesOccur)) {
fprintf(stderr, "confusables file, whole script confusables file and output file must all be specified.\n");
usageAndDie(U_ILLEGAL_ARGUMENT_ERROR);
}
confFileName = options[3].value;
confWSFileName = options[4].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;
}
#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);
}
int32_t wsConfusablesLen = 0;
const char *wsConfsables = readFile(confWSFileName, &wsConfusablesLen);
if (wsConfsables == 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,
wsConfsables, wsConfusablesLen,
&errType, &parseError, &status);
if (U_FAILURE(status)) {
const char *errFile =
(errType == USPOOF_WHOLE_SCRIPT_CONFUSABLE)? confWSFileName : confFileName;
fprintf(stderr, "gencfu: uspoof_openFromSource error \"%s\" at file %s, line %d, column %d\n",
u_errorName(status), errFile, (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;
delete wsConfsables;
u_cleanup();
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;
}