1 karl 1.25 //%2006////////////////////////////////////////////////////////////////////////
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2 humberto 1.8 //
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3 karl 1.10 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
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6 karl 1.9 // IBM Corp.; EMC Corporation, The Open Group.
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7 karl 1.10 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
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9 karl 1.11 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
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11 karl 1.25 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
12 // EMC Corporation; Symantec Corporation; The Open Group.
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13 humberto 1.8 //
14 // Permission is hereby granted, free of charge, to any person obtaining a copy
15 // of this software and associated documentation files (the "Software"), to
16 // deal in the Software without restriction, including without limitation the
17 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
18 // sell copies of the Software, and to permit persons to whom the Software is
19 // furnished to do so, subject to the following conditions:
20 //
21 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
22 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
23 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
24 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
25 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
26 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30 //==============================================================================
31 //
32 //%/////////////////////////////////////////////////////////////////////////////
33
34 humberto 1.8 #include <Pegasus/Common/LanguageParser.h>
35 #include <Pegasus/Common/InternalException.h>
36 #include <Pegasus/Common/Tracer.h>
37 #include <Pegasus/Common/MessageLoader.h> //l10n
38 #include <cstring>
39
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40 kumpf 1.21 #ifdef PEGASUS_HAS_ICU
41 # include <unicode/locid.h>
42 #endif
43 #if defined(PEGASUS_OS_OS400)
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44 mike 1.27 # include "EBCDIC_OS400.h"
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45 kumpf 1.21 #endif
46
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47 humberto 1.8 PEGASUS_NAMESPACE_BEGIN
48
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49 kumpf 1.21 static char LANGUAGE_TAG_SEPARATOR_CHAR = '-';
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50 kumpf 1.26 static char LOCALE_ID_SEPARATOR_CHAR = '_';
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51 kumpf 1.21
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52 kumpf 1.23 AcceptLanguageList LanguageParser::parseAcceptLanguageHeader(
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53 kumpf 1.21 const String& acceptLanguageHeader)
54 {
55 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseAcceptLanguageHeader");
56
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57 kumpf 1.23 AcceptLanguageList acceptLanguages;
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58 kumpf 1.21
59 try
60 {
61 Array<String> languageElements;
62 LanguageParser::_parseLanguageHeader(
63 acceptLanguageHeader,
64 languageElements);
65
66 for (Uint32 i = 0; i < languageElements.size(); i++)
67 {
68 String languageTagString;
69 Real32 qualityValue;
70 LanguageParser::_parseAcceptLanguageElement(
71 languageElements[i], languageTagString, qualityValue);
72 acceptLanguages.insert(LanguageTag(languageTagString), qualityValue);
73 }
74 }
75 catch (Exception& e)
76 {
77 throw InvalidAcceptLanguageHeader(e.getMessage());
78 }
79 kumpf 1.21
80 PEG_METHOD_EXIT();
81 return acceptLanguages;
82 }
83
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84 kumpf 1.23 ContentLanguageList LanguageParser::parseContentLanguageHeader(
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85 kumpf 1.21 const String& contentLanguageHeader)
86 {
87 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseContentLanguageHeader");
88
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89 kumpf 1.23 ContentLanguageList contentLanguages;
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90 kumpf 1.21
91 try
92 {
93 Array<String> languageElements;
94 LanguageParser::_parseLanguageHeader(
95 contentLanguageHeader,
96 languageElements);
97
98 for (Uint32 i = 0; i < languageElements.size(); i++)
99 {
100 contentLanguages.append(LanguageTag(languageElements[i]));
101 }
102 }
103 catch (Exception& e)
104 {
105 throw InvalidContentLanguageHeader(e.getMessage());
106 }
107
108 PEG_METHOD_EXIT();
109 return contentLanguages;
110 }
111 kumpf 1.21
112 void LanguageParser::parseLanguageTag(
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113 kumpf 1.24 const String& languageTagString,
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114 kumpf 1.21 String& language,
115 String& country,
116 String& variant)
117 {
118 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::parseLanguageTag");
119
120 language.clear();
121 country.clear();
122 variant.clear();
123
124 if (languageTagString == "*")
125 {
126 // Parsing and validation is complete
127 PEG_METHOD_EXIT();
128 return;
129 }
130
131 Boolean isStandardFormat = true; // RFC 3066 (ISO 639, ISO 3166)
132 Array<String> subtags;
133
134 _parseLanguageSubtags(subtags, languageTagString);
135 kumpf 1.21
136 // _parseLanguageSubtags() always returns at least one subtag.
137 PEGASUS_ASSERT(subtags.size() > 0);
138
139 // Validate the primary subtag.
140 // Given a languageTagString "en-US-mn" the language is "en".
141
142 language = subtags[0];
143
144 if ((language == "i") || (language == "x"))
145 {
146 // These primary tags are allowed, but are not ISO 639 compliant
147 isStandardFormat = false;
148 language.clear();
149 }
150 else if ((language.size() != 2) && (language.size() != 3))
151 {
152 // Except for "i" and "x", primary tags must be 2 or 3 characters,
153 // according to RFC 3066.
154 MessageLoaderParms parms(
155 "Common.LanguageParser.INVALID_LANGUAGE_TAG",
156 kumpf 1.21 "Invalid language tag \"$0\".", languageTagString);
157 PEG_METHOD_EXIT();
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158 marek 1.29 // throw Exception(MessageLoader::getMessage(parms));
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159 marek 1.28 // do not localize message, requires a language tag for this
160 // localization can cause recursion here
161 throw Exception(parms.toString());
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162 kumpf 1.21 }
163
164 if (subtags.size() == 1)
165 {
166 // If only the primary subtag is present, we are done!
167 PEG_METHOD_EXIT();
168 return;
169 }
170
171 // Validate the second subtag.
172 // Given a languageTagString "en-US-mn" the country is "US".
173
174 if (subtags[1].size() == 1)
175 {
176 // The second subtag may not be a single character according to
177 // RFC 3066.
178 MessageLoaderParms parms(
179 "Common.LanguageParser.INVALID_LANGUAGE_TAG",
180 "Invalid language tag \"$0\".", languageTagString);
181 PEG_METHOD_EXIT();
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182 marek 1.29 // throw Exception(MessageLoader::getMessage(parms));
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183 marek 1.28 // do not localize message, requires a language tag for this
184 // localization can cause recursion here
185 throw Exception(parms.toString());
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186 kumpf 1.21 }
187
188 if (isStandardFormat)
189 {
190 Uint32 variantIndex = 1;
191
192 if (subtags[1].size() == 2)
193 {
194 country = subtags[1];
195 variantIndex = 2;
196 }
197
198 Uint32 numSubtags = subtags.size();
199
200 if (variantIndex < numSubtags)
201 {
202 variant = subtags[variantIndex++];
203
204 while (variantIndex < numSubtags)
205 {
206 variant.append(LANGUAGE_TAG_SEPARATOR_CHAR);
207 kumpf 1.21 variant.append(subtags[variantIndex++]);
208 }
209 }
210 }
211
212 PEG_METHOD_EXIT();
213 }
214
215 void LanguageParser::validateQualityValue(Real32 quality)
216 {
217 if ((quality > 1.0) || (quality < 0.0))
218 {
219 MessageLoaderParms parms(
220 "Common.LanguageParser.INVALID_QUALITY_VALUE",
221 "AcceptLanguage contains an invalid quality value");
222 throw InvalidAcceptLanguageHeader(MessageLoader::getMessage(parms));
223 }
224 }
225
226 String LanguageParser::buildAcceptLanguageHeader(
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227 kumpf 1.23 const AcceptLanguageList& acceptLanguages)
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228 kumpf 1.21 {
229 String alString;
230 Uint32 numAcceptLanguages = acceptLanguages.size();
231
232 for (Uint32 i = 0; i < numAcceptLanguages; i++)
233 {
234 alString.append(acceptLanguages.getLanguageTag(i).toString());
235
236 Real32 q = acceptLanguages.getQualityValue(i);
237 if (q != 1.0)
238 {
239 char qValueString[6];
240 sprintf(qValueString, "%4.3f", q);
241 alString.append(";q=");
242 alString.append(qValueString);
243 }
244
245 if (i < numAcceptLanguages - 1)
246 {
247 alString.append(",");
248 }
249 kumpf 1.21 }
250
251 return alString;
252 }
253
254 String LanguageParser::buildContentLanguageHeader(
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255 kumpf 1.23 const ContentLanguageList& contentLanguages)
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256 kumpf 1.21 {
257 String clString;
258 Uint32 numContentLanguages = contentLanguages.size();
259
260 for (Uint32 i = 0; i < numContentLanguages; i++)
261 {
262 clString.append(contentLanguages.getLanguageTag(i).toString());
263
264 if (i < numContentLanguages - 1)
265 {
266 clString.append(",");
267 }
268 }
269
270 return clString;
271 }
272
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273 kumpf 1.26 #ifdef PEGASUS_HAS_ICU
274 String& LanguageParser::convertLocaleIdToLanguageTag(String& localeId)
275 {
276 Uint32 index = 0;
277 while ((index = localeId.find(index, LOCALE_ID_SEPARATOR_CHAR)) !=
278 PEG_NOT_FOUND)
279 {
280 localeId[index] = LANGUAGE_TAG_SEPARATOR_CHAR;
281 }
282 return localeId;
283 }
284 #endif
285
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286 kumpf 1.23 AcceptLanguageList LanguageParser::getDefaultAcceptLanguages()
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287 kumpf 1.21 {
288 #if defined(PEGASUS_HAS_MESSAGES) && defined(PEGASUS_HAS_ICU)
289 Locale default_loc = Locale::getDefault();
290
291 # ifdef PEGASUS_OS_OS400
292 char* tmp = (char*)default_loc.getName();
293 char tmp_[100];
294 EtoA(strcpy(tmp_,tmp));
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295 kumpf 1.26 String localeId = tmp_;
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296 kumpf 1.21 # else
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297 kumpf 1.26 String localeId = default_loc.getName();
298 # endif
299
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300 kumpf 1.21 try
301 {
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302 kumpf 1.26 return LanguageParser::parseAcceptLanguageHeader(
303 convertLocaleIdToLanguageTag(localeId));
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304 kumpf 1.21 }
305 catch (const InvalidAcceptLanguageHeader& e)
306 {
307 Logger::put_l(Logger::ERROR_LOG, System::CIMSERVER, Logger::SEVERE,
308 "src.Server.cimserver.FAILED_TO_GET_PROCESS_LOCALE",
309 "Could not convert the system locale to a valid accept-language "
310 "format");
311 Logger::put(Logger::ERROR_LOG, System::CIMSERVER, Logger::SEVERE,
312 e.getMessage());
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313 kumpf 1.23 AcceptLanguageList al;
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314 kumpf 1.22 al.insert(LanguageTag("*"), 1);
315 return al;
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316 kumpf 1.21 }
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317 kumpf 1.22 #else
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318 kumpf 1.23 return AcceptLanguageList();
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319 kumpf 1.21 #endif
320 }
321
322 void LanguageParser::_parseLanguageHeader(
323 const String& languageHeaderValue,
324 Array<String>& languageElements)
325 {
326 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseLanguageHeader");
327
328 languageElements.clear();
329 String element;
330
331 for (Uint32 i=0, len=languageHeaderValue.size(); i<len; i++)
332 {
333 Char16 nextChar = languageHeaderValue[i];
334
335 if (isascii(nextChar) && isspace(nextChar))
336 {
337 // Ignore whitespace
338 }
339 else if (nextChar == '(')
340 kumpf 1.21 {
341 // Ignore comments
342 while (i < len)
343 {
344 // Search for the closing parenthesis
345 if (languageHeaderValue[i] == ')')
346 {
347 break;
348 }
349
350 // Skip over escape characters
351 if (languageHeaderValue[i] == '\\')
352 {
353 i++;
354 }
355
356 i++;
357 }
358
359 // Check for a missing closing parenthesis
360 if (i >= len)
361 kumpf 1.21 {
362 MessageLoaderParms parms(
363 "Common.LanguageParser.DOES_NOT_CONTAIN_TERMINATING",
364 "Closing \")\" character is missing.");
365 throw Exception(MessageLoader::getMessage(parms));
366 }
367 }
368 else if (nextChar == ',')
369 {
370 // Check for the end of the element
371 languageElements.append(element);
372 element.clear();
373 }
374 else
375 {
376 // Unescape an escape character
377 if ((nextChar == '\\') && (i < len-1))
378 {
379 nextChar = languageHeaderValue[++i];
380 }
381
382 kumpf 1.21 // Include this character in the value
383 element.append(nextChar);
384 }
385 }
386
387 // Include the last element in the languageElements array
388 languageElements.append(element);
389
390 PEG_METHOD_EXIT();
391 }
392
393 void LanguageParser::_parseAcceptLanguageElement(
394 const String& acceptLanguageElement,
395 String& languageTag,
396 Real32& quality)
397 {
398 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseAcceptLanguageElement");
399
400 // look for ';' in acceptLanguageElement, that means we have a
401 // quality value to capture. If not present, we only have a language tag.
402
403 kumpf 1.21 Uint32 semicolonIndex = acceptLanguageElement.find(";");
404 if (semicolonIndex != PEG_NOT_FOUND)
405 {
406 // Separate the language tag and quality value
407
408 String qualityString =
409 acceptLanguageElement.subString(semicolonIndex+1);
410 languageTag = acceptLanguageElement.subString(0, semicolonIndex);
411
412 // Parse the quality value
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413 humberto 1.8
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414 kumpf 1.21 char dummyChar;
415 int scanfConversions = sscanf(
416 qualityString.getCString(),
417 "q=%f%c", &quality, &dummyChar);
418
419 if ((scanfConversions != 1) ||
420 (qualityString.size() > 7))
421 {
422 MessageLoaderParms parms(
423 "Common.LanguageParser.INVALID_QUALITY_VALUE",
424 "AcceptLanguage contains an invalid quality value");
425 PEG_METHOD_EXIT();
426 throw Exception(MessageLoader::getMessage(parms));
427 }
428 }
429 else
430 {
431 languageTag = acceptLanguageElement;
432 quality = 1.0;
433 }
434
435 kumpf 1.21 PEG_METHOD_EXIT();
436 }
437
438 void LanguageParser::_parseLanguageSubtags(
439 Array<String>& subtags,
440 const String& languageTagString)
441 {
442 PEG_METHOD_ENTER(TRC_L10N, "LanguageParser::_parseLanguageSubtags");
443
444 // Parse the language tag into subtags
445
446 Uint32 subtagIndex = 0;
447 Uint32 separatorIndex;
448 while ((separatorIndex = languageTagString.find(
449 subtagIndex, LANGUAGE_TAG_SEPARATOR_CHAR)) != PEG_NOT_FOUND)
450 {
451 subtags.append(languageTagString.subString(
452 subtagIndex, separatorIndex - subtagIndex));
453 subtagIndex = separatorIndex + 1;
454 }
455 subtags.append(languageTagString.subString(subtagIndex));
456 kumpf 1.21
457 // Validate the syntax of each of the subtags
458
459 for (Uint32 i = 0, n = subtags.size(); i < n; i++)
460 {
461 if (((i == 0) && !_isValidPrimarySubtagSyntax(subtags[i])) ||
462 ((i > 0) && !_isValidSubtagSyntax(subtags[i])))
463 {
464 MessageLoaderParms parms(
465 "Common.LanguageParser.MALFORMED_LANGUAGE_TAG",
466 "Malformed language tag \"$0\".", languageTagString);
467 PEG_METHOD_EXIT();
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468 marek 1.29 // throw Exception(MessageLoader::getMessage(parms));
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469 marek 1.28 // do not localize message, requires a language tag for this
470 // localization can cause recursion here
471 throw Exception(parms.toString());
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472 kumpf 1.21 }
473 }
474
475 PEG_METHOD_EXIT();
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476 humberto 1.8 }
477
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478 kumpf 1.21 Boolean LanguageParser::_isValidPrimarySubtagSyntax(const String& subtag)
479 {
480 if ((subtag.size() == 0) || (subtag.size() > 8))
481 {
482 return false;
483 }
484
485 for (Uint32 i = 0, n = subtag.size(); i < n; i++)
486 {
487 if (!(isascii(subtag[i]) && isalpha(subtag[i])))
488 {
489 return false;
490 }
491 }
492
493 return true;
494 }
495
496 Boolean LanguageParser::_isValidSubtagSyntax(const String& subtag)
497 {
498 if ((subtag.size() == 0) || (subtag.size() > 8))
499 kumpf 1.21 {
500 return false;
501 }
502
503 for (Uint32 i = 0, n = subtag.size(); i < n; i++)
504 {
505 if (!(isascii(subtag[i]) && isalnum(subtag[i])))
506 {
507 return false;
508 }
509 }
510
511 return true;
512 }
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513 humberto 1.8
514 PEGASUS_NAMESPACE_END
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LanguageParser.cpp
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