//convert GopherText to GMI and save to outpath
public static Tuple <int, string, string> GophertoGmi(string gopherPath, string outPath, string uri, GopherParseTypes parseType)
{
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
var finder = new ResourceFinder();
var parseScript = (parseType == GopherParseTypes.Map) ? "GophermapToGmi.r3" : "GophertextToGmi.r3";
//allow for rebol and converters to be in sub folder of exe (e.g. when deployed)
//otherwise we use the development ones which are version controlled
var rebolPath = finder.LocalOrDevFile(appDir, @"Rebol", @"..\..\Rebol", "r3-core.exe");
var scriptPath = finder.LocalOrDevFile(appDir, @"GmiConverters", @"..\..\GmiConverters", parseScript);
//due to bug in rebol 3 at the time of writing (mid 2020) there is a known bug in rebol 3 in
//working with command line parameters, so we need to escape quotes
//see https://stackoverflow.com/questions/6721636/passing-quoted-arguments-to-a-rebol-3-script
//also hypens are also problematic, so we base64 each parameter and unpack it in the script
var command = String.Format("\"{0}\" -cs \"{1}\" \"{2}\" \"{3}\" \"{4}\" ",
rebolPath,
scriptPath,
Base64Service.Base64Encode(gopherPath),
Base64Service.Base64Encode(outPath),
Base64Service.Base64Encode(uri)
);
var execProcess = new ExecuteProcess();
var result = execProcess.ExecuteCommand(command);
return(result);
}
//convert GMI to HTML for display and save to outpath
public static Tuple <int, string, string> GmiToHtml(string gmiPath, string outPath, string uri, SiteIdentity siteIdentity, string theme, bool showWebHeader)
{
var appDir = AppDomain.CurrentDomain.BaseDirectory;
//allow for rebol and converters to be in sub folder of exe (e.g. when deployed)
//otherwise we use the development ones which are version controlled
var rebolPath = ResourceFinder.LocalOrDevFile(appDir, @"Rebol", @"..\..\..\Rebol", "r3-core.exe");
var scriptPath = ResourceFinder.LocalOrDevFile(appDir, @"GmiConverters", @"..\..\..\GmiConverters", "GmiToHtml.r3");
var identiconUri = new Uri(siteIdentity.IdenticonImagePath());
var fabricUri = new Uri(siteIdentity.FabricImagePath());
//due to bug in rebol 3 at the time of writing (mid 2020) there is a known bug in rebol 3 in
//working with command line parameters, so we need to escape quotes
//see https://stackoverflow.com/questions/6721636/passing-quoted-arguments-to-a-rebol-3-script
//also hypens are also problematic, so we base64 each param and unpack in the script
var command = string.Format("\"{0}\" -cs \"{1}\" \"{2}\" \"{3}\" \"{4}\" \"{5}\" \"{6}\" \"{7}\" \"{8}\" \"{9}\" \"{10}\" ",
rebolPath,
scriptPath,
Base64Service.Base64Encode(gmiPath),
Base64Service.Base64Encode(outPath),
Base64Service.Base64Encode(uri),
Base64Service.Base64Encode(theme),
Base64Service.Base64Encode(identiconUri.AbsoluteUri),
Base64Service.Base64Encode(fabricUri.AbsoluteUri),
Base64Service.Base64Encode(siteIdentity.GetId()),
Base64Service.Base64Encode(siteIdentity.GetSiteId()),
Base64Service.Base64Encode(showWebHeader ? "true" : "false"));
var result = ExecuteProcess.ExecuteCommand(command);
return(result);
}
//convert text to GMI for raw text
public static Tuple <int, string, string> HtmlToGmi(string rawPath, string outPath)
{
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
var finder = new ResourceFinder();
//allow for rebol and converters to be in sub folder of exe (e.g. when deployed)
//otherwise we use the development ones which are version controlled
var converterPath = finder.LocalOrDevFile(appDir, @"HtmlToGmi", @"..\..\..\HtmlToGmi", "html2gmi.exe");
//for some unknown reason, the -m flag (numbered citations) must not be last when calling from this context
//-e (show embedded images as links)
//-n (number links)
var command = String.Format("\"{0}\" -mne -i \"{1}\" -o \"{2}\"",
converterPath,
rawPath,
outPath
);
var execProcess = new ExecuteProcess();
var result = execProcess.ExecuteCommand(command);
return(result);
}
public GeminiNavigator(MainWindow mainWindow, WebBrowser browserControl)
{
mMainWindow = mainWindow;
mWebBrowser = browserControl;
mFinder = new ResourceFinder();
}
private void BuildThemeMenu()
{
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
var finder = new ResourceFinder();
var themeFolder = finder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\GmiConverters\themes");
foreach (var file in Directory.EnumerateFiles(themeFolder, "*.htm"))
{
var newMenu = new MenuItem();
newMenu.Header = Path.GetFileNameWithoutExtension(Path.Combine(themeFolder, file));
newMenu.Click += ViewThemeItem_Click;
mnuTheme.Items.Add(newMenu);
}
}
public void NavigateAboutScheme(System.Windows.Navigation.NavigatingCancelEventArgs e, SiteIdentity siteIdentity)
{
var sessionPath = Session.Instance.SessionPath;
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
string fullQuery;
//just load the help file
//no further action
mMainWindow.ToggleContainerControlsForBrowser(true);
var sourceFileName = e.Uri.PathAndQuery.Substring(1); //trim off leading /
//this expects uri has a "geminaut" domain so gmitohtml converter can proceed for now
//I think it requires a domain for parsing...
fullQuery = e.Uri.OriginalString;
string hash;
hash = HashService.GetMd5Hash(fullQuery);
var hashFile = Path.Combine(sessionPath, hash + ".txt");
var htmlCreateFile = Path.Combine(sessionPath, hash + ".htm");
var finder = new ResourceFinder();
var helpFolder = finder.LocalOrDevFolder(appDir, @"Docs", @"..\..\Docs");
var helpFile = Path.Combine(helpFolder, sourceFileName);
//use a specific theme so about pages look different to user theme
var templateBaseName = Path.Combine(helpFolder, "help-theme");
if (File.Exists(helpFile))
{
File.Copy(helpFile, hashFile, true);
mMainWindow.ShowUrl(fullQuery, hashFile, htmlCreateFile, templateBaseName, siteIdentity, e);
}
else
{
mMainWindow.ToastNotify("No content was found for: " + fullQuery, ToastMessageStyles.Warning);
e.Cancel = true;
}
}
public static void CopyAssets()
{
var sessionPath = Session.Instance.SessionPath;
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
var assetsTarget = Path.Combine(sessionPath, "Assets");
if (!Directory.Exists(assetsTarget))
{
Directory.CreateDirectory(assetsTarget);
}
var assetsFolder = ResourceFinder.LocalOrDevFolder(appDir, @"GmiConverters\Themes\Assets", @"..\..\..\GmiConverters\Themes\Assets");
foreach (var file in Directory.GetFiles(assetsFolder))
{
File.Copy(file, Path.Combine(assetsTarget, Path.GetFileName(file)), true);
}
}
public void NavigateGeminiScheme(string fullQuery, System.Windows.Navigation.NavigatingCancelEventArgs e, SiteIdentity siteIdentity, bool requireSecure = true)
{
var geminiUri = e.Uri.OriginalString;
var sessionPath = Session.Instance.SessionPath;
var appDir = AppDomain.CurrentDomain.BaseDirectory;
var settings = new UserSettings();
var hash = HashService.GetMd5Hash(fullQuery);
//uses .txt as extension so content loaded as text/plain not interpreted by the browser
//if user requests a view-source.
var rawFile = sessionPath + "\\" + hash + ".txt";
var gmiFile = sessionPath + "\\" + hash + ".gmi";
var htmlFile = sessionPath + "\\" + hash + ".htm";
//delete txt file as GemGet seems to sometimes overwrite not create afresh
File.Delete(rawFile);
File.Delete(gmiFile);
//delete any existing html file to encourage webbrowser to reload it
File.Delete(htmlFile);
var uri = new Uri(fullQuery);
//use a proxy for any other scheme that is not gemini
var proxy = ""; //use none
var connectInsecure = false;
X509Certificate2 certificate;
certificate = Session.Instance.CertificatesManager.GetCertificate(uri.Host); //may be null if none assigned or available
if (uri.Scheme != "gemini")
{
proxy = settings.HttpSchemeProxy;
}
try
{
GeminiResponse geminiResponse;
try
{
geminiResponse = (GeminiResponse)Gemini.Fetch(uri, certificate, proxy, connectInsecure, settings.MaxDownloadSizeMb * 1024, settings.MaxDownloadTimeSeconds);
}
catch (Exception err)
{
//warn, but continue if there are server validation errors
//in these early days of Gemini we dont forbid visiting a site with an expired cert or mismatched host name
//but we do give a warning each time
if (err.Message == "The remote certificate was rejected by the provided RemoteCertificateValidationCallback.")
{
mMainWindow.ToastNotify("Note: the certificate from: " + e.Uri.Authority + " is expired or invalid.", ToastMessageStyles.Warning);
//try again insecure this time
geminiResponse = (GeminiResponse)Gemini.Fetch(uri, certificate, proxy, true, settings.MaxDownloadSizeMb * 1024, settings.MaxDownloadTimeSeconds);
}
else
{
//reraise
throw;
}
}
if (geminiResponse.codeMajor == '1')
{
//needs input, then refetch
mMainWindow.ToggleContainerControlsForBrowser(true);
NavigateGeminiWithInput(e, geminiResponse);
}
else if (geminiResponse.codeMajor == '2')
{
//success
File.WriteAllBytes(rawFile, geminiResponse.bytes.ToArray());
if (File.Exists(rawFile))
{
if (geminiResponse.meta.Contains("text/gemini"))
{
File.Copy(rawFile, gmiFile);
}
else if (geminiResponse.meta.Contains("text/html"))
{
//is an html file served over gemini - probably not common, but not unheard of
var htmltoGmiResult = ConverterService.HtmlToGmi(rawFile, gmiFile);
if (htmltoGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not convert HTML to GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
}
else if (geminiResponse.meta.Contains("text/"))
{
//convert plain text to a gemini version (wraps it in a preformatted section)
var textToGmiResult = ConverterService.TextToGmi(rawFile, gmiFile);
if (textToGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not render text as GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
}
else
{
//a download
//its an image - rename the raw file and just show it
var pathFragment = (new UriBuilder(fullQuery)).Path;
var ext = Path.GetExtension(pathFragment);
var binFile = rawFile + (ext == "" ? ".tmp" : ext);
File.Copy(rawFile, binFile, true); //rename overwriting
if (geminiResponse.meta.Contains("image/"))
{
mMainWindow.ShowImage(fullQuery, binFile, e);
}
else
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = Path.GetFileName(pathFragment);
if (saveFileDialog.ShowDialog() == true)
{
try
{
//save the file
var savePath = saveFileDialog.FileName;
File.Copy(binFile, savePath, true); //rename overwriting
mMainWindow.ToastNotify("File saved to " + savePath, ToastMessageStyles.Success);
}
catch (SystemException err)
{
mMainWindow.ToastNotify("Could not save the file due to: " + err.Message, ToastMessageStyles.Error);
}
}
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
return;
}
if (geminiResponse.uri.ToString() != fullQuery)
{
string redirectUri = fullQuery;
if (geminiResponse.uri.ToString().Contains("://"))
{
//a full url
//normalise the URi (e.g. remove default port if specified)
redirectUri = UriTester.NormaliseUri(new Uri(geminiResponse.uri.ToString())).ToString();
}
else
{
//a relative one
var baseUri = new Uri(fullQuery);
var targetUri = new Uri(baseUri, geminiResponse.uri.ToString());
redirectUri = UriTester.NormaliseUri(targetUri).ToString();
}
var finalUri = new Uri(redirectUri);
if (e.Uri.Scheme == "gemini" && finalUri.Scheme != "gemini")
{
//cross-scheme redirect, not supported
mMainWindow.ToastNotify("Cross scheme redirect from Gemini not supported: " + redirectUri, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
else
{
//others e.g. http->https redirect are fine
}
//redirected to a full gemini url
geminiUri = redirectUri;
//regenerate the hashes using the redirected target url
hash = HashService.GetMd5Hash(geminiUri);
var gmiFileNew = sessionPath + "\\" + hash + ".txt";
var htmlFileNew = sessionPath + "\\" + hash + ".htm";
//move the source file
try
{
if (File.Exists(gmiFileNew))
{
File.Delete(gmiFileNew);
}
File.Move(gmiFile, gmiFileNew);
}
catch (Exception err)
{
mMainWindow.ToastNotify(err.ToString(), ToastMessageStyles.Error);
}
//update locations of gmi and html file
gmiFile = gmiFileNew;
htmlFile = htmlFileNew;
}
else
{
geminiUri = fullQuery;
}
var userThemesFolder = ResourceFinder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\..\GmiConverters\themes");
var userThemeBase = Path.Combine(userThemesFolder, settings.Theme);
mMainWindow.ShowUrl(geminiUri, gmiFile, htmlFile, userThemeBase, siteIdentity, e);
}
}
// codemajor = 3 is redirect - should eventually end in success or raise an error
else if (geminiResponse.codeMajor == '4')
{
mMainWindow.ToastNotify("Temporary failure (status 4X)\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else if (geminiResponse.codeMajor == '5')
{
if (geminiResponse.codeMinor == '1')
{
mMainWindow.ToastNotify("Page not found\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else
{
mMainWindow.ToastNotify("Permanent failure (status 5X)\n\n" + geminiResponse.meta + "\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
}
else if (geminiResponse.codeMajor == '6')
{
mMainWindow.ToastNotify("Certificate requried. Choose one and try again.\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else
{
mMainWindow.ToastNotify("Unexpected output from server " +
"(status " + geminiResponse.codeMajor + "." + geminiResponse.codeMinor + ") " +
geminiResponse.meta + "\n\n"
+ e.Uri.ToString(), ToastMessageStyles.Warning);
}
}
catch (Exception err)
{
//generic handler for other runtime errors
mMainWindow.ToastNotify("Error getting gemini content for " + e.Uri.ToString() + "\n\n" + err.Message, ToastMessageStyles.Warning);
}
//make the window responsive again
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
e.Cancel = true;
}
public bool NavigateGeminiScheme(string fullQuery, Uri uri, SiteIdentity siteIdentity, bool requireSecure = true)
{
bool navigated = true;
var geminiUri = uri.OriginalString;
var sessionPath = Session.Instance.SessionPath;
var appDir = AppDomain.CurrentDomain.BaseDirectory;
//use local or dev binary for gemget
var gemGet = ResourceFinder.LocalOrDevFile(appDir, "Gemget", "..\\..\\..\\..\\Gemget", "gemget-windows-386.exe");
var hash = HashService.GetMd5Hash(fullQuery);
//uses .txt as extension so content loaded as text/plain not interpreted by the browser
//if user requests a view-source.
var rawFile = sessionPath + "\\" + hash + ".txt";
var gmiFile = sessionPath + "\\" + hash + ".gmi";
var htmlFile = sessionPath + "\\" + hash + ".htm";
//delete txt file as GemGet seems to sometimes overwrite not create afresh
File.Delete(rawFile);
File.Delete(gmiFile);
//delete any existing html file to encourage webbrowser to reload it
File.Delete(htmlFile);
var settings = new Settings();
string command = "";
var secureFlag = requireSecure ? "" : " -i ";
if (uri.Scheme == "gemini")
{
//pass options to gemget for download
command = string.Format(
"\"{0}\" {1} --header --no-progress-bar -m \"{2}\"Mb -t {3} -o \"{4}\" \"{5}\"",
gemGet,
secureFlag,
settings.MaxDownloadSizeMb,
settings.MaxDownloadTimeSeconds,
rawFile,
fullQuery);
}
else
{
//pass options to gemget for download using the assigned http proxy, such as
//duckling-proxy https://github.com/LukeEmmet/duckling-proxy
//this should obviously be a trusted server since it is in the middle of the
//request
command = string.Format(
"\"{0}\" {1} --header --no-progress-bar -m \"{2}\"Mb -t {3} -o \"{4}\" -p \"{5}\" \"{6}\"",
gemGet,
secureFlag,
settings.MaxDownloadSizeMb,
settings.MaxDownloadTimeSeconds,
rawFile,
settings.HttpSchemeProxy,
fullQuery);
}
var result = ExecuteProcess.ExecuteCommand(command, true, true);
var geminiResponse = new Response.GeminiResponse(fullQuery);
geminiResponse.ParseGemGet(result.Item2); //parse stdout
geminiResponse.ParseGemGet(result.Item3); //parse stderr
//ToastNotify(geminiResponse.Status + " " + geminiResponse.Meta);
//in these early days of Gemini we dont forbid visiting a site with an expired cert or mismatched host name
//but we do give a warning each time
if (result.Item1 == 1 && requireSecure)
{
var tryInsecure = false;
var securityError = "";
if (geminiResponse.Errors[0].Contains("server cert is expired"))
{
tryInsecure = true;
securityError = "Server certificate is expired";
}
else if (geminiResponse.Errors[0].Contains("hostname does not verify"))
{
tryInsecure = true;
securityError = "Host name does not verify";
}
if (tryInsecure)
{
//give a warning and try again with insecure
mMainWindow.ToastNotify("Note: " + securityError + " for: " + uri.Authority, ToastMessageStyles.Warning);
NavigateGeminiScheme(fullQuery, uri, siteIdentity, false);
return(true);
}
}
if (geminiResponse.AbandonedTimeout || geminiResponse.AbandonedSize)
{
var abandonMessage = string.Format(
"Download was abandoned as it exceeded the max size ({0}) or time ({1} s). See GemiNaut settings for details.\n\n{2}",
settings.MaxDownloadSizeMb,
settings.MaxDownloadTimeSeconds,
fullQuery);
mMainWindow.ToastNotify(abandonMessage, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
return(false);
}
if (File.Exists(rawFile))
{
if (geminiResponse.Meta.Contains("text/gemini"))
{
File.Copy(rawFile, gmiFile);
}
else if (geminiResponse.Meta.Contains("text/html"))
{
//is an html file served over gemini - probably not common, but not unheard of
var htmltoGmiResult = ConverterService.HtmlToGmi(rawFile, gmiFile);
if (htmltoGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not convert HTML to GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
return(false);
}
}
else if (geminiResponse.Meta.Contains("text/"))
{
//convert plain text to a gemini version (wraps it in a preformatted section)
var textToGmiResult = ConverterService.TextToGmi(rawFile, gmiFile);
if (textToGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not render text as GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
return(false);
}
}
else
{
//a download
//its an image - rename the raw file and just show it
var pathFragment = (new UriBuilder(fullQuery)).Path;
var ext = Path.GetExtension(pathFragment);
var binFile = rawFile + (ext == "" ? ".tmp" : ext);
File.Copy(rawFile, binFile, true); //rename overwriting
if (geminiResponse.Meta.Contains("image/"))
{
mMainWindow.ShowImage(fullQuery, binFile);
}
else
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = Path.GetFileName(pathFragment);
if (saveFileDialog.ShowDialog() == true)
{
try
{
//save the file
var savePath = saveFileDialog.FileName;
File.Copy(binFile, savePath, true); //rename overwriting
mMainWindow.ToastNotify("File saved to " + savePath, ToastMessageStyles.Success);
}
catch (SystemException err)
{
mMainWindow.ToastNotify("Could not save the file due to: " + err.Message, ToastMessageStyles.Error);
}
}
mMainWindow.ToggleContainerControlsForBrowser(true);
return(false);
}
return(true);
}
if (geminiResponse.Redirected)
{
string redirectUri = fullQuery;
if (geminiResponse.FinalUrl.Contains("://"))
{
//a full url
//normalise the URi (e.g. remove default port if specified)
redirectUri = UriTester.NormaliseUri(new Uri(geminiResponse.FinalUrl)).ToString();
}
else
{
//a relative one
var baseUri = new Uri(fullQuery);
var targetUri = new Uri(baseUri, geminiResponse.FinalUrl);
redirectUri = UriTester.NormaliseUri(targetUri).ToString();
}
var finalUri = new Uri(redirectUri);
if (uri.Scheme == "gemini" && finalUri.Scheme != "gemini")
{
//cross-scheme redirect, not supported
mMainWindow.ToastNotify("Cross scheme redirect from Gemini not supported: " + redirectUri, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
return(false);
}
else
{
//others e.g. http->https redirect are fine
}
//redirected to a full gemini url
geminiUri = redirectUri;
//regenerate the hashes using the redirected target url
hash = HashService.GetMd5Hash(geminiUri);
var gmiFileNew = sessionPath + "\\" + hash + ".txt";
var htmlFileNew = sessionPath + "\\" + hash + ".htm";
//move the source file
try
{
if (File.Exists(gmiFileNew))
{
File.Delete(gmiFileNew);
}
File.Move(gmiFile, gmiFileNew);
}
catch (Exception err)
{
mMainWindow.ToastNotify(err.ToString(), ToastMessageStyles.Error);
}
//update locations of gmi and html file
gmiFile = gmiFileNew;
htmlFile = htmlFileNew;
}
else
{
geminiUri = fullQuery;
}
var userThemesFolder = ResourceFinder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\GmiConverters\themes");
var userThemeBase = Path.Combine(userThemesFolder, settings.Theme);
mMainWindow.ShowUrl(geminiUri, gmiFile, htmlFile, userThemeBase, siteIdentity);
}
else if (geminiResponse.Status == 10 || geminiResponse.Status == 11)
{
//needs input
mMainWindow.ToggleContainerControlsForBrowser(true);
navigated = NavigateGeminiWithInput(uri, geminiResponse.Meta);
}
else if (geminiResponse.Status == 50 || geminiResponse.Status == 51)
{
mMainWindow.ToastNotify("Page not found (status 51)\n\n" + uri.ToString(), ToastMessageStyles.Warning);
}
else
{
//some othe error - show to the user for info
mMainWindow.ToastNotify(string.Format(
"Cannot retrieve the content (exit code {0}): \n\n{1} \n\n{2}",
result.Item1,
string.Join("\n\n", geminiResponse.Info),
string.Join("\n\n", geminiResponse.Errors)
),
ToastMessageStyles.Error);
}
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
return(navigated);
}
public void NavigateGopherScheme(string fullQuery, System.Windows.Navigation.NavigatingCancelEventArgs e, SiteIdentity siteIdentity)
{
var sessionPath = Session.Instance.SessionPath;
var appDir = System.AppDomain.CurrentDomain.BaseDirectory;
//check if it is a query selector without a parameter
if (!e.Uri.OriginalString.Contains("%09") && e.Uri.PathAndQuery.StartsWith("/7/"))
{
NavigateGopherWithInput(e);
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
e.Cancel = true;
return;
}
var proc = new ExecuteProcess();
var finder = new ResourceFinder();
//use local or dev binary for gemget
var gopherClient = finder.LocalOrDevFile(appDir, "GopherGet", "..\\..\\..\\GopherGet", "gopher-get.exe");
string hash;
hash = HashService.GetMd5Hash(fullQuery);
//uses .txt as extension so content loaded as text/plain not interpreted by the browser
//if user requests a view-source.
var gopherFile = sessionPath + "\\" + hash + ".txt";
var gmiFile = sessionPath + "\\" + hash + ".gmi";
var htmlFile = sessionPath + "\\" + hash + ".htm";
//delete txt file as GemGet seems to sometimes overwrite not create afresh
File.Delete(gopherFile);
//delete any existing html file to encourage webbrowser to reload it
File.Delete(gmiFile);
//save to the file
var command = string.Format("\"{0}\" \"{1}\" \"{2}\"", gopherClient, fullQuery, gopherFile);
var result = proc.ExecuteCommand(command, true, true);
var exitCode = result.Item1;
var stdOut = result.Item2;
if (exitCode != 0)
{
mMainWindow.ToastNotify(result.Item3, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true); //reenable browser
e.Cancel = true;
return;
}
if (File.Exists(gopherFile))
{
string parseFile;
if (stdOut.Contains("DIR") || stdOut.Contains("QRY"))
{
//convert gophermap to text/gemini
//ToastNotify("Converting gophermap to " + gmiFile);
result = ConverterService.GophertoGmi(gopherFile, gmiFile, fullQuery, GopherParseTypes.Map);
parseFile = gmiFile;
}
else if (stdOut.Contains("TXT"))
{
result = ConverterService.GophertoGmi(gopherFile, gmiFile, fullQuery, GopherParseTypes.Text);
parseFile = gmiFile;
}
else
{
//a download
//copy to a file having its source extension
var pathFragment = (new UriBuilder(fullQuery)).Path;
var ext = Path.GetExtension(pathFragment);
var binFile = gopherFile + (ext ?? "");
File.Copy(gopherFile, binFile, true); //rename overwriting
if (stdOut.Contains("IMG") || stdOut.Contains("GIF"))
{
//show the image
mMainWindow.ShowImage(fullQuery, binFile, e);
}
else
{
//show a save as dialog
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = Path.GetFileName(pathFragment);
if (saveFileDialog.ShowDialog() == true)
{
try
{
//save the file
var savePath = saveFileDialog.FileName;
File.Copy(binFile, savePath, true); //rename overwriting
mMainWindow.ToastNotify("File saved to " + savePath, ToastMessageStyles.Success);
}
catch (SystemException err)
{
mMainWindow.ToastNotify("Could not save the file due to: " + err.Message, ToastMessageStyles.Error);
}
}
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
return;
}
if (!File.Exists(gmiFile))
{
mMainWindow.ToastNotify("Did not create expected GMI file for " + fullQuery + " in " + gmiFile, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
else
{
var settings = new Settings();
var userThemesFolder = finder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\GmiConverters\themes");
var userThemeBase = Path.Combine(userThemesFolder, settings.Theme);
mMainWindow.ShowUrl(fullQuery, parseFile, htmlFile, userThemeBase, siteIdentity, e);
}
}
}
public void NavigateHttpScheme(string fullQuery, NavigatingCancelEventArgs e, SiteIdentity siteIdentity, string linkId)
{
var httpUri = e.Uri.OriginalString;
var sessionPath = Session.Instance.SessionPath;
var appDir = AppDomain.CurrentDomain.BaseDirectory;
var hash = HashService.GetMd5Hash(fullQuery);
var settings = new UserSettings();
//uses .txt as extension so content loaded as text/plain not interpreted by the browser
//if user requests a view-source.
var rawFile = sessionPath + "\\" + hash + ".txt";
var gmiFile = sessionPath + "\\" + hash + ".gmi";
var htmlFile = sessionPath + "\\" + hash + ".htm";
var reRender = false; //if just re-rendering the same content in a different mode, dont re-fetch
var httpResponse = new Response.HttpResponse(fullQuery);
Tuple <int, string, string> result;
if (IsModeSwitch(linkId) && File.Exists(rawFile))
{
//use the existing content
reRender = true;
result = new Tuple <int, string, string>(0, "", "");
//set default mode to this mode
settings.WebRenderMode = linkId;
settings.Save();
}
else
{
File.Delete(rawFile);
//delete txt file as GemGet seems to sometimes overwrite not create afresh
File.Delete(gmiFile);
//use local or dev binary for gemget
var httpGet = ResourceFinder.LocalOrDevFile(appDir, "HttpGet", "..\\..\\..\\..\\HttpGet", "http-get.exe");
//pass options to gemget for download
var command = string.Format(
"\"{0}\" --header -o \"{1}\" \"{2}\"",
httpGet,
rawFile,
fullQuery);
result = ExecuteProcess.ExecuteCommand(command, true, true);
if (result.Item1 != 0)
{
mMainWindow.ToastNotify("Could not access web resource: " + fullQuery + "\n" + result.Item3, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
httpResponse.ParseGemGet(result.Item2); //parse stdout
httpResponse.ParseGemGet(result.Item3); //parse stderr
if (httpResponse.StatusCode == 404)
{
{
mMainWindow.ToastNotify("Resource not found:\n" + fullQuery, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
//ToastNotify(httpResponse.Status + " " + httpResponse.Meta);
}
else if (httpResponse.StatusCode != 200)
{
//some other error
mMainWindow.ToastNotify("Could not get resource: "
+ httpResponse.Status + "\n"
+ fullQuery, ToastMessageStyles.Warning);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
}
//delete any existing html file to encourage webbrowser to reload it
File.Delete(htmlFile);
if (File.Exists(rawFile))
{
if (httpResponse.ContentType.Contains("text/html") || reRender)
{
//use local or dev binary for goose
var gooseConvert = ResourceFinder.LocalOrDevFile(appDir, "Goose", "..\\..\\..\\..\\Goose", "goose-cli.exe");
var gooseOut = sessionPath + "\\" + hash + ".goose";
var gooseCommand = "";
var htmlPath = "";
if (settings.WebRenderMode == "web-switch-plain")
{
//pass options to goose to get plain text
gooseCommand = string.Format(
"\"{0}\" -t -i \"{1}\" -o \"{2}\"",
gooseConvert,
rawFile,
gooseOut);
result = ExecuteProcess.ExecuteCommand(gooseCommand, true, true);
//just use plain text
File.Copy(gooseOut, gmiFile, true);
}
else
{
if (settings.WebRenderMode == "web-switch-simplified")
{
//pass options to goose to get main content as html
gooseCommand = string.Format(
"\"{0}\" -i \"{1}\" -o \"{2}\"",
gooseConvert,
rawFile,
gooseOut);
//get main html of the page
result = ExecuteProcess.ExecuteCommand(gooseCommand, true, true);
htmlPath = gooseOut;
}
else
{
//no filtering to extract main content
htmlPath = rawFile;
}
//convert to gmi
var htmlToGmiResult = ConverterService.HtmlToGmi(htmlPath, gmiFile);
if (htmlToGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not render HTML as GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
}
}
else if (httpResponse.ContentType.Contains("text/"))
{
//convert plain text to a http version (wraps it in a preformatted section)
var textToGmiResult = ConverterService.TextToGmi(rawFile, gmiFile);
if (textToGmiResult.Item1 != 0)
{
mMainWindow.ToastNotify("Could not render text as GMI: " + fullQuery, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
return;
}
}
else
{
//a download
//its an image - rename the raw file and just show it
var pathFragment = (new UriBuilder(fullQuery)).Path;
var ext = Path.GetExtension(pathFragment);
var binFile = rawFile + (ext == "" ? ".tmp" : ext);
File.Copy(rawFile, binFile, true); //rename overwriting
if (httpResponse.ContentType.Contains("image/"))
{
mMainWindow.ShowImage(fullQuery, binFile, e);
}
else
{
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = Path.GetFileName(pathFragment);
if (saveFileDialog.ShowDialog() == true)
{
try
{
//save the file
var savePath = saveFileDialog.FileName;
File.Copy(binFile, savePath, true); //rename overwriting
mMainWindow.ToastNotify("File saved to " + savePath, ToastMessageStyles.Success);
}
catch (SystemException err)
{
mMainWindow.ToastNotify("Could not save the file due to: " + err.Message, ToastMessageStyles.Error);
}
}
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
return;
}
if (httpResponse.Redirected)
{
string redirectUri = fullQuery;
redirectUri = httpResponse.FinalUrl;
//redirected to a full http url
httpUri = redirectUri;
//regenerate the hashes using the redirected target url
hash = HashService.GetMd5Hash(httpUri);
var gmiFileNew = sessionPath + "\\" + hash + ".txt";
var htmlFileNew = sessionPath + "\\" + hash + ".htm";
//move the source file
try
{
if (File.Exists(gmiFileNew))
{
File.Delete(gmiFileNew);
}
File.Move(gmiFile, gmiFileNew);
}
catch (Exception err)
{
mMainWindow.ToastNotify(err.ToString(), ToastMessageStyles.Error);
}
//update locations of gmi and html file
gmiFile = gmiFileNew;
htmlFile = htmlFileNew;
}
else
{
httpUri = fullQuery;
}
var userThemesFolder = ResourceFinder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\..\GmiConverters\themes");
var userThemeBase = Path.Combine(userThemesFolder, settings.Theme);
mMainWindow.ShowUrl(httpUri, gmiFile, htmlFile, userThemeBase, siteIdentity, e);
}
else if (httpResponse.StatusCode == 404)
{
mMainWindow.ToastNotify("Page not found (status 51)\n\n" + e.Uri.ToString(), ToastMessageStyles.Warning);
}
else
{
//some othe error - show to the user for info
mMainWindow.ToastNotify(string.Format(
"Cannot retrieve the content (exit code {0}): \n\n{1} \n\n{2}",
result.Item1,
string.Join("\n\n", httpResponse.Info),
string.Join("\n\n", httpResponse.Errors)
),
ToastMessageStyles.Error);
}
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
e.Cancel = true;
}
public void NavigateGopherScheme(string fullQuery, System.Windows.Navigation.NavigatingCancelEventArgs e, SiteIdentity siteIdentity)
{
var sessionPath = Session.Instance.SessionPath;
var appDir = AppDomain.CurrentDomain.BaseDirectory;
//check if it is a query selector without a parameter
if (!e.Uri.OriginalString.Contains("%09") && e.Uri.PathAndQuery.StartsWith("/7/"))
{
NavigateGopherWithInput(e);
mMainWindow.ToggleContainerControlsForBrowser(true);
//no further navigation right now
e.Cancel = true;
return;
}
var settings = new UserSettings();
var hash = HashService.GetMd5Hash(fullQuery);
//uses .txt as extension so content loaded as text/plain not interpreted by the browser
//if user requests a view-source.
var gopherFile = sessionPath + "\\" + hash + ".txt";
var gmiFile = sessionPath + "\\" + hash + ".gmi";
var htmlFile = sessionPath + "\\" + hash + ".htm";
//delete txt file as GemGet seems to sometimes overwrite not create afresh
File.Delete(gopherFile);
//delete any existing html file to encourage webbrowser to reload it
File.Delete(gmiFile);
//get the content from Gopher using SmolNetSharp
IResponse response;
try
{
response = Gopher.Fetch(new Uri(fullQuery), settings.MaxDownloadSizeMb * 1024, settings.MaxDownloadTimeSeconds);
File.WriteAllBytes(gopherFile, response.bytes.ToArray());
}
catch (Exception err)
{
mMainWindow.ToastNotify(err.Message, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true); //reenable browser
e.Cancel = true;
return;
}
var mime = response.mime;
Tuple <int, string, string> result;
if (File.Exists(gopherFile))
{
string parseFile;
if (mime == "application/gopher-menu")
{
//convert gophermap to text/gemini
//ToastNotify("Converting gophermap to " + gmiFile);
result = ConverterService.GophertoGmi(gopherFile, gmiFile, fullQuery, GopherParseTypes.Map);
parseFile = gmiFile;
}
else if (mime == "text/plain")
{
result = ConverterService.GophertoGmi(gopherFile, gmiFile, fullQuery, GopherParseTypes.Text);
parseFile = gmiFile;
}
else
{
//a download
//copy to a file having its source extension
var pathFragment = (new UriBuilder(fullQuery)).Path;
var ext = Path.GetExtension(pathFragment);
var binFile = gopherFile + (ext ?? "");
File.Copy(gopherFile, binFile, true); //rename overwriting
if (mime == "image/png" || mime == "image/gif" || mime == "image/jpeg")
{
//show the image
mMainWindow.ShowImage(fullQuery, binFile, e);
}
else
{
//show a save as dialog
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = Path.GetFileName(pathFragment);
if (saveFileDialog.ShowDialog() == true)
{
try
{
//save the file
var savePath = saveFileDialog.FileName;
File.Copy(binFile, savePath, true); //rename overwriting
mMainWindow.ToastNotify("File saved to " + savePath, ToastMessageStyles.Success);
}
catch (SystemException err)
{
mMainWindow.ToastNotify("Could not save the file due to: " + err.Message, ToastMessageStyles.Error);
}
}
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
return;
}
if (!File.Exists(gmiFile) || result.Item1 != 0)
{
mMainWindow.ToastNotify("Did not create expected GMI file for " + fullQuery + " in " + gmiFile, ToastMessageStyles.Error);
mMainWindow.ToggleContainerControlsForBrowser(true);
e.Cancel = true;
}
else
{
var userThemesFolder = ResourceFinder.LocalOrDevFolder(appDir, @"GmiConverters\themes", @"..\..\..\GmiConverters\themes");
var userThemeBase = Path.Combine(userThemesFolder, settings.Theme);
mMainWindow.ShowUrl(fullQuery, parseFile, htmlFile, userThemeBase, siteIdentity, e);
}
}
}
