1 /*****************************************************************************\
3 * Name : check_version *
4 * Author : Chris Koeritz *
6 *******************************************************************************
7 * Copyright (c) 1996-$now By Author. This program is free software; you can *
8 * redistribute it and/or modify it under the terms of the GNU General Public *
9 * License as published by the Free Software Foundation; either version 2 of *
10 * the License or (at your option) any later version. This is online at: *
11 * http://www.fsf.org/copyleft/gpl.html *
12 * Please send any updates to: fred@gruntose.com *
13 \*****************************************************************************/
15 #include "version_checker.h"
17 #include <application/windoze_helper.h>
18 #include <basis/astring.h>
19 #include <basis/environment.h>
20 #include <basis/functions.h>
21 #include <basis/guards.h>
22 #include <basis/utf_conversion.h>
23 #include <configuration/application_configuration.h>
24 #include <loggers/critical_events.h>
28 using namespace basis;
29 using namespace configuration;
30 using namespace loggers;
31 using namespace structures;
33 #ifndef BOOT_STRAPPING
34 // pull in the version specified for this build.
35 ///hmmm: on hold! #include <__build_version.h>
37 // plug in a fake version for our bootstrapping process.
38 #define __build_FILE_VERSION "108.420.1024.10008"
47 // ensures that we handle the data properly regardless of unicode settings.
49 #define render_ptr(ptr) from_unicode_temp( (UTF16 *) ptr)
51 #define render_ptr(ptr) ( (char *) ptr)
59 version_checker::version_checker(const astring &library_file_name,
60 const version &expected_version, const astring &version_complaint)
61 : _library_file_name(new astring(library_file_name)),
62 _expected_version(new version(expected_version)),
63 _version_complaint(new astring(version_complaint))
66 version_checker::~version_checker()
68 WHACK(_library_file_name);
69 WHACK(_expected_version);
70 WHACK(_version_complaint);
73 astring version_checker::text_form() const
75 return astring(class_name()) + ": library_file_name=" + *_library_file_name
76 + ", expected_version=" + _expected_version->text_form()
77 + ", complaint_message=" + *_version_complaint;
80 bool version_checker::good_version() const
82 astring version_disabler = environment::get("TMP");
83 version_disabler += "/no_version_check.txt";
84 FILE *always_okay = fopen(version_disabler.s(), "r");
90 version version_found = retrieve_version(*_library_file_name);
91 if (version_found.compatible(*_expected_version)) return true; // success.
92 complain_wrong_version(*_library_file_name, *_expected_version,
97 bool version_checker::loaded(const astring &library_file_name)
100 return bool(get_handle(library_file_name) != 0);
103 return true || library_file_name.t();
107 void *version_checker::get_handle(const astring &library_file_name)
110 return GetModuleHandle(to_unicode_temp(library_file_name));
112 //hmmm: there really isn't this concept on OSes that i'm aware of.
113 return 0 && library_file_name.t();
117 astring version_checker::module_name(const void *module_handle)
120 //hmmm: implement module name for linux if that makes sense.
121 if (module_handle) {}
122 return application_configuration::application_name();
123 #elif defined(__WIN32__)
124 flexichar low_buff[MAX_ABS_PATH + 1];
125 GetModuleFileName((HMODULE)module_handle, low_buff, MAX_ABS_PATH - 1);
126 astring buff = from_unicode_temp(low_buff);
130 #pragma message("module_name unknown for this operating system.")
131 return application_name();
135 astring version_checker::get_name(const void *to_find)
136 { return module_name(to_find); }
138 bool version_checker::retrieve_version_info(const astring &filename,
141 to_fill.reset(); // clear the buffer.
143 // determine the required size of the version info buffer.
146 un_long module_handle; // filled with the dll or exe handle.
147 required_size = GetFileVersionInfoSize(to_unicode_temp(filename), &module_handle);
149 required_size = 0 && filename.t();
151 if (!required_size) return false;
152 to_fill.reset(required_size); // resize the buffer.
154 // read the version info into our buffer.
155 bool success = false;
157 success = GetFileVersionInfo(to_unicode_temp(filename), module_handle,
158 required_size, to_fill.access());
165 bool version_checker::get_language(byte_array &version_chunk,
166 basis::un_short &high, basis::un_short &low)
171 // determine the language that the version's written in.
172 basis::un_int data_size;
173 void *pointer_to_language_structure;
174 // query the information from the version blob.
175 if (!VerQueryValue(version_chunk.access(),
176 to_unicode_temp("\\VarFileInfo\\Translation"),
177 &pointer_to_language_structure, &data_size))
179 // get the low & high shorts of the structure.
180 high = LOWORD(*(unsigned int *)pointer_to_language_structure);
181 low = HIWORD(*(unsigned int *)pointer_to_language_structure);
183 high = 0 && version_chunk.length();
190 version version_checker::retrieve_version(const astring &filename)
194 // totally bogus stand-in; this just returns the version we were built with
195 // rather than the version that's actually tagged on the file.
197 //hmmm: fix this! get the version header back.
198 // return version(__build_FILE_VERSION);
203 byte_array version_info_found(0, NIL);
204 if (!retrieve_version_info(filename, version_info_found))
205 return version(0, 0, 0, 0);
207 basis::un_short high, low; // holds the language of the version data.
208 if (!get_language(version_info_found, high, low))
209 return version(0, 0, 0, 0);
211 // retrieve the file version from version info using the appropriate
213 astring root_key(astring::SPRINTF, "\\StringFileInfo\\%04x%04x", high, low);
214 astring file_version_key(root_key + astring("\\FileVersion"));
216 astring version_string;
218 abyte *file_version_pointer;
219 basis::un_int data_size;
220 if (!VerQueryValue(version_info_found.access(),
221 to_unicode_temp(file_version_key),
222 (LPVOID *)&file_version_pointer, &data_size))
223 return version(0, 0, 0, 0);
224 version_string = render_ptr(file_version_pointer);
225 // clean any spaces out of the string; people sometimes format these
227 for (int i = 0; i < version_string.length(); i++) {
228 if (version_string[i] == ' ') {
229 version_string.zap(i, i);
230 i--; // skip back a beat.
234 return version(0, 0, 0, 0);
237 return version::from_text(version_string);
240 bool version_checker::get_record(const astring &filename,
241 version_record &to_fill)
243 to_fill = version_record();
244 byte_array version_info_found(0, NIL);
245 if (!retrieve_version_info(filename, version_info_found))
248 basis::un_short high, low; // holds the language of the version data.
249 if (!get_language(version_info_found, high, low))
252 // set the root key for all accesses of the version chunk.
253 astring root_key(astring::SPRINTF, "\\StringFileInfo\\%04x%04x", high, low);
255 // reports whether all lookups succeeded or not.
256 bool total_success = true;
258 // the various version pieces are retrieved...
261 basis::un_int data_size;
265 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
266 + astring("\\FileVersion")), &data_pointer, &data_size))
267 total_success = false;
269 to_fill.file_version = version::from_text(render_ptr(data_pointer));
272 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
273 + astring("\\CompanyName")), &data_pointer, &data_size))
274 total_success = false;
276 to_fill.company_name = render_ptr(data_pointer);
279 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
280 + astring("\\FileDescription")), &data_pointer, &data_size))
281 total_success = false;
283 to_fill.description = render_ptr(data_pointer);
286 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
287 + astring("\\InternalName")), &data_pointer, &data_size))
288 total_success = false;
290 to_fill.internal_name = render_ptr(data_pointer);
293 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
294 + astring("\\LegalCopyright")), &data_pointer, &data_size))
295 total_success = false;
297 to_fill.copyright = render_ptr(data_pointer);
300 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
301 + astring("\\LegalTrademarks")), &data_pointer, &data_size))
302 total_success = false;
304 to_fill.trademarks = render_ptr(data_pointer);
306 // original file name.
307 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
308 + astring("\\OriginalFilename")), &data_pointer, &data_size))
309 total_success = false;
311 to_fill.original_name = render_ptr(data_pointer);
314 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
315 + astring("\\ProductName")), &data_pointer, &data_size))
316 total_success = false;
318 to_fill.product_name = render_ptr(data_pointer);
321 if (!VerQueryValue(version_info_found.access(), to_unicode_temp(root_key
322 + astring("\\ProductVersion")), &data_pointer, &data_size))
323 total_success = false;
325 to_fill.product_version = version::from_text(render_ptr(data_pointer));
327 // hmmm: chunks missing in version check.
330 return total_success;
333 void version_checker::complain_wrong_version(const astring &library_file_name,
334 const version &expected_version, const version &version_found) const
336 astring to_show("There has been a Version Mismatch: The module \"");
337 // use embedded module handle to retrieve name of dll or exe.
338 astring module_name = get_name(version::__global_module_handle());
339 if (!module_name) module_name = "Unknown";
340 to_show += module_name;
341 to_show += astring("\" cannot load. This is because the file \"");
342 to_show += library_file_name;
343 to_show += astring("\" was expected to have a version of [");
345 to_show += expected_version.flex_text_form(version::DOTS);
347 to_show += astring("] but it instead had a version of [");
348 to_show += version_found.flex_text_form(version::DOTS);
350 to_show += astring("]. ");
351 to_show += *_version_complaint;
353 continuable_error("version checking", "failure", to_show.s());
354 #elif defined(__WIN32__)
355 MessageBox(0, to_unicode_temp(to_show),
356 to_unicode_temp("version_checking::failure"), MB_OK);
360 void version_checker::complain_cannot_load(const astring &lib_file) const
362 astring to_show("There has been a failure in Version Checking: The file \"");
364 to_show += astring("\" could not be loaded or found. ");
365 to_show += *_version_complaint;
366 continuable_error("version checking", "loading dll", to_show.s());