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Add IBAN validation

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This commit is contained in:
Lorenz Stechauner
2023-02-27 17:45:37 +01:00
parent 5480e4f9b9
commit f291504bd0
4 changed files with 103 additions and 39 deletions
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6
WGneu/Utils.cs
View File

@ -21,5 +21,11 @@ namespace WGneu {
yield return childOfChild; yield return childOfChild;
} }
} }
public static int Modulo(string a, int b) {
if (!a.All(char.IsDigit))
throw new ArgumentException("First argument has to be a decimal string");
return a.Select(ch => ch - '0').Aggregate((sum, n) => (sum * 10 + n) % b);
}
} }
} }

107
WGneu/Validator.cs
View File

@ -32,12 +32,19 @@ namespace WGneu {
{ "423", Array.Empty<string[]>() }, { "423", Array.Empty<string[]>() },
}; };
public static void SetInputInvalid(TextBox input) {
public static ValidationResult CheckNumericInput(TextBox input) { input.BorderBrush = System.Windows.Media.Brushes.Red;
return CheckNumericInput(input, -1);
} }
private static ValidationResult CheckNumericInput(TextBox input, int maxLen) { public static void SetInputValid(TextBox input) {
input.ClearValue(TextBox.BorderBrushProperty);
}
public static ValidationResult CheckNumericInput(TextBox input, bool optional) {
return CheckNumericInput(input, optional, -1);
}
private static ValidationResult CheckNumericInput(TextBox input, bool optional, int maxLen) {
string text = ""; string text = "";
int pos = input.CaretIndex; int pos = input.CaretIndex;
for (int i = 0; i < input.Text.Length; i++) { for (int i = 0; i < input.Text.Length; i++) {
@ -50,6 +57,11 @@ namespace WGneu {
input.Text = text; input.Text = text;
input.CaretIndex = pos; input.CaretIndex = pos;
if (text.Length == 0) {
if (optional) return new(true, null);
return new(false, "Wert ist nicht optional");
}
if (maxLen >= 0 && input.Text.Length > maxLen) { if (maxLen >= 0 && input.Text.Length > maxLen) {
input.Text = input.Text.Substring(0, maxLen); input.Text = input.Text.Substring(0, maxLen);
input.CaretIndex = Math.Min(pos, maxLen); input.CaretIndex = Math.Min(pos, maxLen);
@ -58,14 +70,14 @@ namespace WGneu {
return new(true, null); return new(true, null);
} }
public static ValidationResult CheckPhoneNumber(TextBox input) { public static ValidationResult CheckPhoneNumber(TextBox input, bool optional) {
string text = ""; string text = "";
int pos = input.CaretIndex; int pos = input.CaretIndex;
for (int i = 0, v = 0; i < input.Text.Length; i++) { for (int i = 0, v = 0; i < input.Text.Length && v < 30; i++) {
char ch = input.Text[i]; char ch = input.Text[i];
if (v == 0 && input.Text.Length - i >= 2 && ch == '0' && input.Text[i + 1] == '0') { if (v == 0 && input.Text.Length - i >= 2 && ch == '0' && input.Text[i + 1] == '0') {
v++; i++; v++; i++;
text += "+"; text += '+';
} else if (ch == '(' && input.Text.Length - i >= 3 && input.Text[i + 1] == '0' && input.Text[i + 2] == ')') { } else if (ch == '(' && input.Text.Length - i >= 3 && input.Text[i + 1] == '0' && input.Text[i + 2] == ')') {
i += 2; i += 2;
} else if (v == 0 && ch == '0') { } else if (v == 0 && ch == '0') {
@ -76,16 +88,16 @@ namespace WGneu {
text += ch; text += ch;
} else if (v > 0 && char.IsDigit(ch)) { } else if (v > 0 && char.IsDigit(ch)) {
if (PHONE_NRS.Any(kv => text == "+" + kv.Key)) if (PHONE_NRS.Any(kv => text == "+" + kv.Key))
text += " "; text += ' ';
if (text.StartsWith("+43 ")) { if (text.StartsWith("+43 ")) {
var nr = text[4..]; var nr = text[4..];
var vws = PHONE_NRS["43"]; var vws = PHONE_NRS["43"];
if (v >= 4 && v - 4 < vws.Length && vws[v - 4].Any(vw => nr.StartsWith(vw))) if (v >= 4 && v - 4 < vws.Length && vws[v - 4].Any(vw => nr.StartsWith(vw)))
text += " "; text += ' ';
else if (nr == "1") else if (nr == "1")
text += " "; text += ' ';
else if (v == 7 && nr.Length == 4) else if (v == 7 && nr.Length == 4)
text += " "; text += ' ';
} }
v++; v++;
text += ch; text += ch;
@ -96,7 +108,7 @@ namespace WGneu {
input.Text = text; input.Text = text;
input.CaretIndex = pos; input.CaretIndex = pos;
if (text.Length == 0) if (optional && text.Length == 0)
return new(true, null); return new(true, null);
if (text.Length < 10) if (text.Length < 10)
return new(false, "Telefonnummer zu kurz"); return new(false, "Telefonnummer zu kurz");
@ -104,11 +116,11 @@ namespace WGneu {
return new(true, null); return new(true, null);
} }
public static ValidationResult CheckEmailAddress(TextBox input) { public static ValidationResult CheckEmailAddress(TextBox input, bool optional) {
string text = ""; string text = "";
int pos = input.CaretIndex; int pos = input.CaretIndex;
bool domain = false; bool domain = false;
for (int i = 0; i < input.Text.Length; i++) { for (int i = 0; i < input.Text.Length && text.Length < 256; i++) {
char ch = input.Text[i]; char ch = input.Text[i];
if (domain) { if (domain) {
if ((char.IsAscii(ch) && char.IsLetterOrDigit(ch)) || ".-_öäüßÖÄÜẞ".Any(c => c == ch)) { if ((char.IsAscii(ch) && char.IsLetterOrDigit(ch)) || ".-_öäüßÖÄÜẞ".Any(c => c == ch)) {
@ -116,7 +128,8 @@ namespace WGneu {
text += char.ToLower(ch); text += char.ToLower(ch);
} }
} else { } else {
if (ch == '@') domain = true; if (ch == '@')
domain = true;
if (!char.IsControl(ch) && !char.IsWhiteSpace(ch)) if (!char.IsControl(ch) && !char.IsWhiteSpace(ch))
text += ch; text += ch;
} }
@ -127,10 +140,13 @@ namespace WGneu {
input.Text = text; input.Text = text;
input.CaretIndex = pos; input.CaretIndex = pos;
if (text.Length == 0) if (text.Length == 0) {
return new(true, null); if (optional) return new(true, null);
else if (text[0] == '@' || !domain) return new(false, "E-Mail-Adresse ist nicht optional");
} else if (text[0] == '@' || !domain) {
return new(false, "E-Mail-Adresse ungültig"); return new(false, "E-Mail-Adresse ungültig");
}
var last = text.Split(".").Last(); var last = text.Split(".").Last();
if (last.Length < 2 || !last.All(ch => char.IsAscii(ch) && char.IsLower(ch))) if (last.Length < 2 || !last.All(ch => char.IsAscii(ch) && char.IsLower(ch)))
return new(false, "E-Mail-Adresse ungültig"); return new(false, "E-Mail-Adresse ungültig");
@ -138,8 +154,49 @@ namespace WGneu {
return new(true, null); return new(true, null);
} }
public static ValidationResult CheckLfbisNr(TextBox input) { public static ValidationResult CheckIban(TextBox input, bool optional) {
var res = CheckNumericInput(input, 7); string text = "";
int pos = input.CaretIndex;
int v = 0;
for (int i = 0; i < input.Text.Length && v < 34; i++) {
char ch = input.Text[i];
if (char.IsLetterOrDigit(ch) && char.IsAscii(ch)) {
if (((v < 2 && char.IsLetter(ch)) || (v >= 2 && v < 4 && char.IsDigit(ch)) || v >= 4) &&
((!text.StartsWith("AT") && !text.StartsWith("DE")) || char.IsDigit(ch)))
{
if (v != 0 && v % 4 == 0)
text += ' ';
v++;
text += char.ToUpper(ch);
}
}
if (i == input.CaretIndex - 1)
pos = text.Length;
if (text.StartsWith("AT") && v >= 20)
break;
else if (text.StartsWith("DE") && v >= 22)
break;
}
input.Text = text;
input.CaretIndex = pos;
if (optional && text.Length == 0) {
return new(true, null);
} else if (v < 5 || (text.StartsWith("AT") && v != 20) || (text.StartsWith("DE") && v != 22)) {
return new(false, "IBAN hat falsche Länge");
}
var validation = (text[4..] + text[..4]).Replace(" ", "")
.Select(ch => char.IsDigit(ch) ? ch.ToString() : (ch - 'A' + 10).ToString())
.Aggregate((a, b) => a + b);
if (Utils.Modulo(validation, 97) != 1)
return new(false, "Prüfsumme der IBAN ist falsch");
return new(true, null);
}
public static ValidationResult CheckLfbisNr(TextBox input, bool optional) {
var res = CheckNumericInput(input, optional, 7);
if (!res.IsValid) if (!res.IsValid)
return res; return res;
if (input.Text.Length == 0) if (input.Text.Length == 0)
@ -152,16 +209,8 @@ namespace WGneu {
return new(true, "Not implemented yet"); return new(true, "Not implemented yet");
} }
public static ValidationResult CheckUstIdInput(TextBox input) { public static ValidationResult CheckUstIdInput(TextBox input, bool optional) {
return new(false, "Not implemented yet"); return new(false, "Not implemented yet");
} }
public static void SetInputInvalid(TextBox input) {
input.BorderBrush = System.Windows.Media.Brushes.Red;
}
public static void SetInputValid(TextBox input) {
input.ClearValue(TextBox.BorderBrushProperty);
}
} }
} }

1
WGneu/Windows/MemberListWindow.xaml
View File

@ -155,6 +155,7 @@
<Label Content="IBAN:" HorizontalAlignment="Left" Margin="10,12,0,0" VerticalAlignment="Top" Padding="2"/> <Label Content="IBAN:" HorizontalAlignment="Left" Margin="10,12,0,0" VerticalAlignment="Top" Padding="2"/>
<TextBox x:Name="IbanInput" IsReadOnly="True" <TextBox x:Name="IbanInput" IsReadOnly="True"
TextChanged="IbanInput_TextChanged" LostFocus="IbanInput_LostFocus"
Margin="0,10,10,0" VerticalAlignment="Top" FontSize="14" Padding="2" Grid.Column="1" Height="25"/> Margin="0,10,10,0" VerticalAlignment="Top" FontSize="14" Padding="2" Grid.Column="1" Height="25"/>
<Label Content="BIC:" HorizontalAlignment="Left" Margin="10,42,0,0" VerticalAlignment="Top" Padding="2"/> <Label Content="BIC:" HorizontalAlignment="Left" Margin="10,42,0,0" VerticalAlignment="Top" Padding="2"/>

28
WGneu/Windows/MemberListWindow.xaml.cs
View File

@ -385,8 +385,8 @@ namespace WGneu.Windows {
return true; // TODO return true; // TODO
} }
private void InputTextChanged(TextBox input, Func<TextBox, ValidationResult> checker) { private void InputTextChanged(TextBox input, bool optional, Func<TextBox, bool, ValidationResult> checker) {
var res = checker(input); var res = checker(input, optional);
Valid[input] = res.IsValid; Valid[input] = res.IsValid;
if (res.IsValid) if (res.IsValid)
Validator.SetInputValid(input); Validator.SetInputValid(input);
@ -395,8 +395,8 @@ namespace WGneu.Windows {
UpdateButtons(); UpdateButtons();
} }
private void InputLostFocus(TextBox input, Func<TextBox, ValidationResult> checker, string? msg) { private void InputLostFocus(TextBox input, bool optional, Func<TextBox, bool, ValidationResult> checker, string? msg) {
var res = checker(input); var res = checker(input, optional);
if (!res.IsValid) if (!res.IsValid)
MessageBox.Show(res.ErrorContent.ToString(), msg ?? res.ErrorContent.ToString(), MessageBoxButton.OK, MessageBoxImage.Warning); MessageBox.Show(res.ErrorContent.ToString(), msg ?? res.ErrorContent.ToString(), MessageBoxButton.OK, MessageBoxImage.Warning);
} }
@ -406,27 +406,35 @@ namespace WGneu.Windows {
} }
private void PhoneNrInput_TextChanged(object sender, RoutedEventArgs e) { private void PhoneNrInput_TextChanged(object sender, RoutedEventArgs e) {
InputTextChanged((TextBox)sender, Validator.CheckPhoneNumber); InputTextChanged((TextBox)sender, true, Validator.CheckPhoneNumber);
} }
private void PhoneNrInput_LostFocus(object sender, RoutedEventArgs e) { private void PhoneNrInput_LostFocus(object sender, RoutedEventArgs e) {
InputLostFocus((TextBox)sender, Validator.CheckPhoneNumber, null); InputLostFocus((TextBox)sender, true, Validator.CheckPhoneNumber, null);
} }
private void EmailInput_TextChanged(object sender, RoutedEventArgs e) { private void EmailInput_TextChanged(object sender, RoutedEventArgs e) {
InputTextChanged((TextBox)sender, Validator.CheckEmailAddress); InputTextChanged((TextBox)sender, true, Validator.CheckEmailAddress);
} }
private void EmailInput_LostFocus(object sender, RoutedEventArgs e) { private void EmailInput_LostFocus(object sender, RoutedEventArgs e) {
InputLostFocus((TextBox)sender, Validator.CheckEmailAddress, null); InputLostFocus((TextBox)sender, true, Validator.CheckEmailAddress, null);
}
private void IbanInput_TextChanged(object sender, RoutedEventArgs e) {
InputTextChanged((TextBox)sender, true, Validator.CheckIban);
}
private void IbanInput_LostFocus(object sender, RoutedEventArgs e) {
InputLostFocus((TextBox)sender, true, Validator.CheckIban, null);
} }
private void LfbisNrInput_TextChanged(object sender, RoutedEventArgs e) { private void LfbisNrInput_TextChanged(object sender, RoutedEventArgs e) {
InputTextChanged((TextBox)sender, Validator.CheckLfbisNr); InputTextChanged((TextBox)sender, true, Validator.CheckLfbisNr);
} }
private void LfbisNrInput_LostFocus(object sender, RoutedEventArgs e) { private void LfbisNrInput_LostFocus(object sender, RoutedEventArgs e) {
InputLostFocus((TextBox)sender, Validator.CheckLfbisNr, "Betriebsnummer ungültig"); InputLostFocus((TextBox)sender, true, Validator.CheckLfbisNr, "Betriebsnummer ungültig");
} }
} }
} }