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debug catpcha: only use alphabets

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Signed-off-by: hrj <harshad.rj@gmail.com>
This commit is contained in:
hrj 2021-04-13 12:36:30 +05:30
parent 332bb2113b
commit 954399042c
2 changed files with 12 additions and 4 deletions
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14
src/main/java/lc/misc/HelperFunctions.java
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@ -11,9 +11,17 @@ public class HelperFunctions {
RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON); RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
} }
public static String randomString(int n) { public static final String alphabets = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
String characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz23456789$#%@&?"; public static final String numbers = "23456789";
StringBuilder stringBuilder = new StringBuilder(); public static final String specialCharacters = "$#%@&?";
public static final String allCharacters = alphabets + numbers + specialCharacters;
public static String randomString(final int n) {
return randomString(n, allCharacters);
}
public static String randomString(final int n, final String characters) {
final StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < n; i++) { for (int i = 0; i < n; i++) {
int index = (int) (characters.length() * Math.random()); int index = (int) (characters.length() * Math.random());
stringBuilder.append(characters.charAt(index)); stringBuilder.append(characters.charAt(index));

2
src/main/scala/lc/captchas/DebugCaptcha.scala
View File

@ -58,7 +58,7 @@ class DebugCaptcha extends ChallengeProvider {
} }
def returnChallenge(): Challenge = { def returnChallenge(): Challenge = {
val secret = HelperFunctions.randomString(6) val secret = HelperFunctions.randomString(6, HelperFunctions.alphabets)
new Challenge(simpleText(secret), "image/png", secret.toLowerCase()) new Challenge(simpleText(secret), "image/png", secret.toLowerCase())
} }
} }