//---------------------------------------------------------------------------
// Check to see if SelfImage is up-to-date - notify the user if it isn't
//
void CheckVersion(void) {
TDateTime *dtLastCheck = NULL;
char *filename = NULL;
char *buffer = NULL;
char *verbuff = NULL;
unsigned nVersionInfoSize;
int nBuildPos;
static AnsiString sMyVersion = "";
static int nMyBuild = 0;
AnsiString sCurrentVersion, sURL;
int nCurrentBuild = 0;
TIdHTTP *HTTP;
DWORD nDummy;
__ENTERFUNCTION__;
try {
try {
formSelfImageNewVersionNotify = NULL;
if (!SelfImageConfig->Values["Update Notify"]) {
LOG(LOG_DEBUG, "Update Notify is turned off - not checking for new version.");
goto END; // Ugly - C++ Builder silently ignores a __finally block if a return is process from a nested try.
} // if (!SelfImageConfig->Values["Update Notify"])
if (String(SelfImageConfig->Values["Last Version Check"]).IsEmpty())
SelfImageConfig->Values["Last Version Check"] = (Now()-1).DateTimeString();
dtLastCheck = new TDateTime(String(SelfImageConfig->Values["Last Version Check"]));
if (!DaysBetween(Now(), *dtLastCheck)) {
LOG1(LOG_DEBUG, "Last new version check was performed %s - not checking again.", dtLastCheck->DateTimeString().c_str());
goto END; // Ugly - C++ Builder silently ignores a __finally block if a return is process from a nested try.
} // if (!DaysBetween(Now(), *dtLastCheck))
SelfImageConfig->Values["Last Version Check"] = Now().DateTimeString();
// Get this executable's version - this is a pain, so let's just do it once for each time SelfImage is instantiated
if (!nMyBuild) {
LOG(LOG_DEBUG, "Retrieving internal version number.");
filename = (char *)malloc(MAXPATH);
GetModuleFileName(HInstance, filename, MAXPATH);
nVersionInfoSize = GetFileVersionInfoSize(filename, &nDummy);
// These following three exceptions should never make it to the user except through the logs in a debug build.
// Since they are only for logging, they are allowed to have text that doesn't come from the string table.
if (!nVersionInfoSize)
throw ESelfImageSystemError("GetFileVersionInfoSize() failed: " + GetLastErrorMessage());
buffer = (char *)malloc(nVersionInfoSize);
if (!GetFileVersionInfo(filename, NULL, nVersionInfoSize, buffer))
throw ESelfImageSystemError("GetFileVersionInfo() failed:" + GetLastErrorMessage());
if (!VerQueryValue(buffer, "\\StringFileInfo\\100904E4\\FileVersion", (void **)&verbuff, NULL))
throw ESelfImageSystemError("VerQueryValue() failed:" + GetLastErrorMessage());
sMyVersion = verbuff;
nBuildPos = sMyVersion.LastDelimiter(".");
nMyBuild = sMyVersion.SubString(nBuildPos + 1, sMyVersion.Length() - nBuildPos).ToInt();
sMyVersion = sMyVersion.SubString(1,nBuildPos-1) + " (Build " + String(nMyBuild) + ")";
LOG1(LOG_MESSAGE, "Internal version string retrieved from resources: \"%s\".", sMyVersion.c_str());
} // if (sMyVersion.IsEmpty())
// Get SelfImage's current version from the interweb - woo, this is cool
HTTP = new TIdHTTP(NULL);
sURL = SelfImageConfig->Values["Version URL"];
LOG1(LOG_DEBUG, "Attempting to retrieve version string from URL \"%s\".", sURL.c_str());
try {
sCurrentVersion = HTTP->Get(SelfImageConfig->Values["Version URL"]);
nBuildPos = sCurrentVersion.Pos("(Build ");
nCurrentBuild = sCurrentVersion.SubString(nBuildPos + 7, sCurrentVersion.Length() - nBuildPos - 7).ToInt();
}
catch (...) { sCurrentVersion = ""; }
delete HTTP;
#ifdef __LOGGINGENABLED__
if (!sCurrentVersion.IsEmpty())
LOG2(LOG_MESSAGE, "Version string \"%s\" retrieved from %s.", sCurrentVersion.c_str(), sURL.c_str())
else
LOG2(LOG_WARNING, "Unable to retrieve version string from URL \"%s\": %s", sURL.c_str(), HTTP->ResponseText.c_str());
#endif
// Compare the two...
if (nCurrentBuild && nMyBuild < nCurrentBuild && sCurrentVersion != String(SelfImageConfig->Values["Notify Squelch"])) {
LOG(LOG_DEBUG, "Notifying user of new version.");
formSelfImageNewVersionNotify = new TformSelfImageNewVersionNotify(NULL, sMyVersion, sCurrentVersion);
if (formSelfImageNewVersionNotify->ShowModal() == mrCancel)
SelfImageConfig->Values["Notify Squelch"] = sCurrentVersion;
} // if (different versions)
} // inner try
catch (Exception &e) {
LOG2(LOG_ERROR, "Exception of type \"%s\" raised during new version check with message \"%s\"", String(e.ClassName()).c_str(), e.Message.c_str());
} // catch
} // outer try
__finally {
if (dtLastCheck)
delete dtLastCheck;
if (filename)
free(filename);
if (buffer)
free(buffer);
if (formSelfImageNewVersionNotify) {
delete formSelfImageNewVersionNotify;
formSelfImageNewVersionNotify = NULL;
} // if (formSelfImageNewVersionNotify)
}
END:
__RETURNFUNCTION__;
} // void CheckVersion(void)
