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card validation and final changes
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Roshan Koshy Thomas
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Aug 26, 2022
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commit ba108e7ffc522d21f221033ef9ae4a6d6930e285
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| /nbproject/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,35 +1,55 @@ | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <groupId>computer-for-you</groupId> | ||
| <artifactId>e-cart</artifactId> | ||
| <version>0.0.1-SNAPSHOT</version> | ||
| <packaging>war</packaging> | ||
|
|
||
| <dependencies> | ||
| <dependency> | ||
| <groupId>mysql</groupId> | ||
| <artifactId>mysql-connector-java</artifactId> | ||
| <version>8.0.23</version> | ||
| </dependency> | ||
| </dependencies> | ||
|
|
||
| <build> | ||
| <sourceDirectory>src</sourceDirectory> | ||
| <plugins> | ||
| <plugin> | ||
| <artifactId>maven-compiler-plugin</artifactId> | ||
| <version>3.8.1</version> | ||
| <configuration> | ||
| <release>14</release> | ||
| </configuration> | ||
| </plugin> | ||
| <plugin> | ||
| <artifactId>maven-war-plugin</artifactId> | ||
| <version>3.2.3</version> | ||
| <configuration> | ||
| <warSourceDirectory>WebContent</warSourceDirectory> | ||
| </configuration> | ||
| </plugin> | ||
| </plugins> | ||
| </build> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <groupId>computer-for-you</groupId> | ||
| <artifactId>e-cart</artifactId> | ||
| <version>0.0.1-SNAPSHOT</version> | ||
| <packaging>war</packaging> | ||
|
|
||
| <dependencies> | ||
| <dependency> | ||
| <groupId>mysql</groupId> | ||
| <artifactId>mysql-connector-java</artifactId> | ||
| <version>8.0.23</version> | ||
|
|
||
| </dependency> | ||
| <dependency> | ||
| <groupId>org.mockito</groupId> | ||
| <artifactId>mockito-all</artifactId> | ||
| <version>2.0.2-beta</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>junit</groupId> | ||
| <artifactId>junit</artifactId> | ||
| <version>4.8.2</version> | ||
| </dependency> | ||
| </dependencies> | ||
|
|
||
| <build> | ||
| <sourceDirectory>src</sourceDirectory> | ||
| <plugins> | ||
| <plugin> | ||
| <artifactId>maven-compiler-plugin</artifactId> | ||
| <version>3.8.1</version> | ||
| <configuration> | ||
| <release>14</release> | ||
| </configuration> | ||
| </plugin> | ||
| <plugin> | ||
| <artifactId>maven-war-plugin</artifactId> | ||
| <version>3.2.3</version> | ||
| <configuration> | ||
| <warSourceDirectory>WebContent</warSourceDirectory> | ||
| </configuration> | ||
| </plugin> | ||
| <plugin> | ||
| <groupId>org.apache.maven.plugins</groupId> | ||
| <artifactId>maven-surefire-plugin</artifactId> | ||
| <version>2.19.1</version> | ||
| <configuration> | ||
| <testFailureIgnore>true</testFailureIgnore> | ||
| </configuration> | ||
| </plugin> | ||
|
|
||
| </plugins> | ||
| </build> | ||
| </project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| package cfy.connection; | ||
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| public class ValidateCard { | ||
| public static final int INVALID = -1; | ||
| public static final int VISA = 0; | ||
| public static final int MASTERCARD = 1; | ||
| public static final int AMERICAN_EXPRESS = 2; | ||
| public static final int EN_ROUTE = 3; | ||
| public static final int DINERS_CLUB = 4; | ||
|
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| private static final String[] cardNames = { "Visa", "Mastercard", "American Express", "En Route", | ||
| "Diner's CLub/Carte Blanche", }; | ||
|
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| /** | ||
| * Valid a Credit Card number | ||
| */ | ||
| public boolean validCC(String number) throws Exception { | ||
| int CardID; | ||
| if ((CardID = getCardID(number)) != -1) | ||
| return validCCNumber(number); | ||
| return false; | ||
| } | ||
|
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| /** | ||
| * Get the Card type returns the credit card type INVALID = -1; VISA = 0; | ||
| * MASTERCARD = 1; AMERICAN_EXPRESS = 2; EN_ROUTE = 3; DINERS_CLUB = 4; | ||
| */ | ||
| public int getCardID(String number) { | ||
| int valid = INVALID; | ||
|
|
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| String digit1 = number.substring(0, 1); | ||
| String digit2 = number.substring(0, 2); | ||
| String digit3 = number.substring(0, 3); | ||
| String digit4 = number.substring(0, 4); | ||
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| if (isNumber(number)) { | ||
| /* | ||
| * ---- VISA prefix=4 ---- length=13 or 16 (can be 15 too!?! maybe) | ||
| */ | ||
| if (digit1.equals("4")) { | ||
| if (number.length() == 13 || number.length() == 16) | ||
| valid = VISA; | ||
| } | ||
| /* | ||
| * ---------- MASTERCARD prefix= 51 ... 55 ---------- length= 16 | ||
| */ | ||
| else if (digit2.compareTo("51") >= 0 && digit2.compareTo("55") <= 0) { | ||
| if (number.length() == 16) | ||
| valid = MASTERCARD; | ||
| } | ||
|
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|
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|
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| /* | ||
| * ---- AMEX prefix=34 or 37 ---- length=15 | ||
| */ | ||
| else if (digit2.equals("34") || digit2.equals("37")) { | ||
| if (number.length() == 15) | ||
| valid = AMERICAN_EXPRESS; | ||
| } | ||
| /* | ||
| * ----- ENROU prefix=2014 or 2149 ----- length=15 | ||
| */ | ||
| else if (digit4.equals("2014") || digit4.equals("2149")) { | ||
| if (number.length() == 15) | ||
| valid = EN_ROUTE; | ||
| } | ||
| /* | ||
| * ----- DCLUB prefix=300 ... 305 or 36 or 38 ----- length=14 | ||
| */ | ||
| else if (digit2.equals("36") || digit2.equals("38") | ||
| || (digit3.compareTo("300") >= 0 && digit3.compareTo("305") <= 0)) { | ||
| if (number.length() == 14) | ||
| valid = DINERS_CLUB; | ||
| } | ||
| } | ||
| return valid; | ||
|
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| /* | ||
| * ---- DISCOVER card prefix = 60 -------- lenght = 16 left as an exercise ... | ||
| */ | ||
|
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| } | ||
|
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| public boolean isNumber(String n) { | ||
| try { | ||
| double d = Double.valueOf(n).doubleValue(); | ||
| return true; | ||
| } catch (NumberFormatException e) { | ||
| e.printStackTrace(); | ||
| return false; | ||
| } | ||
| } | ||
|
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| public String getCardName(int id) { | ||
| return (id > -1 && id < cardNames.length ? cardNames[id] : ""); | ||
| } | ||
|
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| public boolean validCCNumber(String n) { | ||
| try { | ||
| /* | ||
| ** known as the LUHN Formula (mod10) | ||
| */ | ||
| int j = n.length(); | ||
|
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| String[] s1 = new String[j]; | ||
| for (int i = 0; i < n.length(); i++) | ||
| s1[i] = "" + n.charAt(i); | ||
|
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| int checksum = 0; | ||
|
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| for (int i = s1.length - 1; i >= 0; i -= 2) { | ||
| int k = 0; | ||
|
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| if (i > 0) { | ||
| k = Integer.valueOf(s1[i - 1]).intValue() * 2; | ||
| if (k > 9) { | ||
| String s = "" + k; | ||
| k = Integer.valueOf(s.substring(0, 1)).intValue() + Integer.valueOf(s.substring(1)).intValue(); | ||
| } | ||
| checksum += Integer.valueOf(s1[i]).intValue() + k; | ||
| } else | ||
| checksum += Integer.valueOf(s1[0]).intValue(); | ||
| } | ||
| return ((checksum % 10) == 0); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| return false; | ||
| } | ||
| } | ||
| } |
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