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(DataFlex) Sign ITIDA JSON and Send to ETA (Egypt Tax Authority) PortalSee more Egypt ITIDA ExamplesDemonstrates how to ITIDA canonicalize JSON, create signature, and send to the ETA Portal.
Use ChilkatAx-win32.pkg Procedure Test Handle hoCrypt Variant vCert Handle hoCert Boolean iSuccess Handle hoCmsOptions Handle hoJsonSigningAttrs String sJsonInvoice String sSigBase64 Handle hoJson Handle hoSbToSend String sClientId String sClientSecretKey Handle hoHttp Variant vReq Handle hoReq Variant vResp Handle hoResp Token Handle hoJsonToken String sAccessToken String sTemp1 Integer iTemp1 Boolean bTemp1 // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt If (Not(IsComObjectCreated(hoCrypt))) Begin Send CreateComObject of hoCrypt End Set ComVerboseLogging Of hoCrypt To True Get Create (RefClass(cComChilkatCert)) To hoCert If (Not(IsComObjectCreated(hoCert))) Begin Send CreateComObject of hoCert End Set ComVerboseLogging Of hoCert To True // Set the smart card PIN, which will be needed for signing. Set ComSmartCardPin Of hoCert To "12345678" // There are many ways to load the certificate. // This example was created for a customer using an ePass2003 USB token. // Assuming the USB token is the only source of a hardware-based private key.. Get ComLoadFromSmartcard Of hoCert "" To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoCert To sTemp1 Showln sTemp1 Procedure_Return End // Tell the crypt class to use this cert. Get pvComObject of hoCert to vCert Get ComSetSigningCert Of hoCrypt vCert To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoCrypt To sTemp1 Showln sTemp1 Procedure_Return End Get Create (RefClass(cComChilkatJsonObject)) To hoCmsOptions If (Not(IsComObjectCreated(hoCmsOptions))) Begin Send CreateComObject of hoCmsOptions End // Setting "DigestData" causes OID 1.2.840.113549.1.7.5 (digestData) to be used. Get ComUpdateBool Of hoCmsOptions "DigestData" True To iSuccess Get ComUpdateBool Of hoCmsOptions "OmitAlgorithmIdNull" True To iSuccess // Indicate that we are passing normal JSON and we want Chilkat do automatically // do the ITIDA JSON canonicalization: Get ComUpdateBool Of hoCmsOptions "CanonicalizeITIDA" True To iSuccess Get ComEmit Of hoCmsOptions To sTemp1 Set ComCmsOptions Of hoCrypt To sTemp1 // The CadesEnabled property applies to all methods that create CMS/PKCS7 signatures. // To create a CAdES-BES signature, set this property equal to true. Set ComCadesEnabled Of hoCrypt To True Set ComHashAlgorithm Of hoCrypt To "sha256" Get Create (RefClass(cComChilkatJsonObject)) To hoJsonSigningAttrs If (Not(IsComObjectCreated(hoJsonSigningAttrs))) Begin Send CreateComObject of hoJsonSigningAttrs End Get ComUpdateInt Of hoJsonSigningAttrs "contentType" 1 To iSuccess Get ComUpdateInt Of hoJsonSigningAttrs "signingTime" 1 To iSuccess Get ComUpdateInt Of hoJsonSigningAttrs "messageDigest" 1 To iSuccess Get ComUpdateInt Of hoJsonSigningAttrs "signingCertificateV2" 1 To iSuccess Get ComEmit Of hoJsonSigningAttrs To sTemp1 Set ComSigningAttributes Of hoCrypt To sTemp1 // By default, all the certs in the chain of authentication are included in the signature. // If desired, we can choose to only include the signing certificate: Set ComIncludeCertChain Of hoCrypt To False // Pass a JSON document such as the following. Chilkat will do the ITIDA canonicalization. // (It is the canonicalized JSON that gets signed.) // Note: The JSON should NOT begin with "{ "documents" : [ ..." // { // "issuer":{ // "address":{ // "branchID":"0", // "country":"EG", // "regionCity":"Cairo", // "postalCode":"", // "buildingNumber":"0", // "street":"123rd Street", // "governate":"GOVERNATE" // }, // "type":"B", // "id":"209999899", // "name":"Xyz SAE" // }, // "receiver":{ // "address":{ // "country":"EG", // "regionCity":"CAIRO", // "postalCode":"11435", // "buildingNumber":"0", // "street":"Autostrad Road Abc", // "governate":"GOVERNATE" // }, // "type":"B", // "id":"999999999", // "name":"XYZ EGYPT FOR TRADE" // }, // "documentType":"I", // "documentTypeVersion":"1.0", // "dateTimeIssued":"2020-11-15T11:04:53Z", // "taxpayerActivityCode":"1073", // "internalID":"ZZZZ999", // "purchaseOrderReference":"2009199918", // "salesOrderReference":"", // "payment":{ // "bankName":"", // "bankAddress":"", // "bankAccountNo":"", // "bankAccountIBAN":"", // "swiftCode":"", // "terms":"" // }, // "delivery":{ // "approach":"", // "packaging":"", // "dateValidity":"", // "exportPort":"", // "countryOfOrigin":"EG", // "grossWeight":0, // "netWeight":0, // "terms":"" // }, // "invoiceLines":[ // { // "description":"CDM Widget 48GX99X12BA", // "itemType":"GS1", // "itemCode":"7622213335056", // "unitType":"CS", // "quantity":1.00, // "unitValue":{ // "currencySold":"EGP", // "amountEGP":588.67, // "amountSold":0, // "currencyExchangeRate":0 // }, // "salesTotal":588.67, // "total":603.97, // "valueDifference":0, // "totalTaxableFees":0, // "netTotal":529.8, // "itemsDiscount":0, // "discount":{ // "rate":10.00, // "amount":58.87 // }, // "taxableItems":[ // { // "taxType":"T1", // "amount":74.17, // "subType":"No sub", // "rate":14.00 // } // ], // "internalCode":"9099994" // } // ], // "totalSales":588.67, // "totalSalesAmount":588.67, // "totalDiscountAmount":58.87, // "netAmount":529.80, // "taxTotals":[ // { // "taxType":"T1", // "amount":74.17 // } // ], // "extraDiscountAmount":0, // "totalItemsDiscountAmount":0, // "totalAmount":603.97, // } // Create the CAdES-BES signature. Set ComEncodingMode Of hoCrypt To "base64" // Make sure we sign the utf-8 byte representation of the JSON string Set ComCharset Of hoCrypt To "utf-8" Move "{ ... }" To sJsonInvoice Get ComSignStringENC Of hoCrypt sJsonInvoice To sSigBase64 Get ComLastMethodSuccess Of hoCrypt To bTemp1 If (bTemp1 = False) Begin Get ComLastErrorText Of hoCrypt To sTemp1 Showln sTemp1 Procedure_Return End Showln "Base64 signature:" Showln sSigBase64 // Insert the base64 signature into the JSON to be sent Get Create (RefClass(cComChilkatJsonObject)) To hoJson If (Not(IsComObjectCreated(hoJson))) Begin Send CreateComObject of hoJson End Get ComLoad Of hoJson sJsonInvoice To iSuccess Get ComUpdateString Of hoJson "signatures[0].signatureType" "I" To iSuccess Get ComUpdateString Of hoJson "signatures[0].value" sSigBase64 To iSuccess Set ComEmitCompact Of hoJson To True // Wrap the JSON in {"documents":[ ... ]} Get Create (RefClass(cComChilkatStringBuilder)) To hoSbToSend If (Not(IsComObjectCreated(hoSbToSend))) Begin Send CreateComObject of hoSbToSend End Get ComAppend Of hoSbToSend '{"documents":[' To iSuccess Get ComEmit Of hoJson To sTemp1 Get ComAppend Of hoSbToSend sTemp1 To iSuccess Get ComAppend Of hoSbToSend "]}" To iSuccess // ------------------------------------------------------------------------ // Get an access token using our client ID and client secret key Move "abc999ff-1234" To sClientId Move "123fff22-1234-abcd" To sClientSecretKey Get Create (RefClass(cComChilkatHttp)) To hoHttp If (Not(IsComObjectCreated(hoHttp))) Begin Send CreateComObject of hoHttp End // Causes the Authorization: Basic header to be added.. Set ComLogin Of hoHttp To sClientId Set ComPassword Of hoHttp To sClientSecretKey Set ComBasicAuth Of hoHttp To True Get Create (RefClass(cComChilkatHttpRequest)) To hoReq If (Not(IsComObjectCreated(hoReq))) Begin Send CreateComObject of hoReq End Set ComHttpVerb Of hoReq To "POST" Set ComPath Of hoReq To "/connect/token" Set ComContentType Of hoReq To "application/x-www-form-urlencoded" Send ComAddParam To hoReq "grant_type" "client_credentials" Send ComAddHeader To hoReq "Connection" "close" Set ComAccept Of hoHttp To "application/json" Get pvComObject of hoReq to vReq Get ComPostUrlEncoded Of hoHttp "https://id.preprod.eta.gov.eg/connect/token" vReq To vResp If (IsComObject(vResp)) Begin Get Create (RefClass(cComChilkatHttpResponse)) To hoResp Set pvComObject Of hoResp To vResp End Get ComLastMethodSuccess Of hoHttp To bTemp1 If (bTemp1 = False) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get ComCloseAllConnections Of hoHttp To iSuccess Get ComStatusCode Of hoResp To iTemp1 Showln "Response status code: " iTemp1 Showln "Response body:" Get ComBodyStr Of hoResp To sTemp1 Showln sTemp1 Get ComStatusCode Of hoResp To iTemp1 If (iTemp1 <> 200) Begin Showln "Failed." Send Destroy of hoResp Procedure_Return End Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken If (Not(IsComObjectCreated(hoJsonToken))) Begin Send CreateComObject of hoJsonToken End Get ComBodyStr Of hoResp To sTemp1 Get ComLoad Of hoJsonToken sTemp1 To iSuccess Get ComStringOf Of hoJsonToken "access_token" To sAccessToken Showln "access_token = " sAccessToken Send Destroy of hoResp // ------------------------------------------------------------------------ // Submit the signed JSON to the ETA (Egypt Tax Authority) Portal // No longer sending basic authentication... Set ComLogin Of hoHttp To "" Set ComPassword Of hoHttp To "" Set ComBasicAuth Of hoHttp To False // Setting the AuthToken property causes the "Authorization: Bearer <token>" header to be added to each request. Set ComAuthToken Of hoHttp To sAccessToken Get ComGetAsString Of hoSbToSend To sTemp1 Get ComPostJson2 Of hoHttp "https://api.preprod.invoicing.eta.gov.eg/api/v1/documentsubmissions" "application/json; charset=utf-8" sTemp1 To vResp If (IsComObject(vResp)) Begin Get Create (RefClass(cComChilkatHttpResponse)) To hoResp Set pvComObject Of hoResp To vResp End Get ComLastMethodSuccess Of hoHttp To bTemp1 If (bTemp1 = False) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get ComStatusCode Of hoResp To iTemp1 Showln "Response status code: " iTemp1 Showln "Response body:" Get ComBodyStr Of hoResp To sTemp1 Showln sTemp1 End_Procedure |
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