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41 changes: 41 additions & 0 deletions
41
launcher-csharp/Connect/Controllers/ValidateWebhookMessage.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| // <copyright file="ValidateWebhookMessage.cs" company="DocuSign"> | ||
| // Copyright (c) DocuSign. All rights reserved. | ||
| // </copyright> | ||
|
|
||
| namespace DocuSign.CodeExamples.Connect.Controllers | ||
| { | ||
| using DocuSign.CodeExamples.Common; | ||
| using DocuSign.CodeExamples.Controllers; | ||
| using DocuSign.CodeExamples.Models; | ||
| using DocuSign.Connect.Examples; | ||
| using Microsoft.AspNetCore.Mvc; | ||
|
|
||
| [Area("Connect")] | ||
| [Route("con001")] | ||
| public class ValidateWebhookMessage : EgController | ||
| { | ||
| public ValidateWebhookMessage(DsConfiguration config, LauncherTexts launcherTexts, IRequestItemsService requestItemsService) | ||
| : base(config, launcherTexts, requestItemsService) | ||
| { | ||
| this.CodeExampleText = this.GetExampleText(this.EgName, ExamplesApiType.Connect); | ||
| this.ViewBag.title = this.CodeExampleText.ExampleName; | ||
| } | ||
|
|
||
| public override string EgName => "con001"; | ||
|
|
||
| [SetViewBag] | ||
| [HttpPost] | ||
| [ValidateAntiForgeryToken] | ||
| public ActionResult ValidateMessageUsing(string hmacSecret, string jsonPayload) | ||
| { | ||
| jsonPayload = jsonPayload.Replace("\\", string.Empty); | ||
|
|
||
| string hashedOutput = HMACValidation.ComputeHash(hmacSecret, jsonPayload); | ||
|
|
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| this.ViewBag.h1 = this.CodeExampleText.ExampleName; | ||
| this.ViewBag.message = this.CodeExampleText.ResultsPageText.Replace("{0}", hashedOutput); | ||
|
|
||
| return this.View("example_done"); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // <copyright file="HMACValidation.cs" company="DocuSign"> | ||
| // Copyright (c) DocuSign. All rights reserved. | ||
| // </copyright> | ||
|
|
||
| namespace DocuSign.Connect.Examples | ||
| { | ||
| using System; | ||
| using System.Security.Cryptography; | ||
| using System.Text; | ||
|
|
||
| public static class HMACValidation | ||
| { | ||
| //ds-snippet-start:Connect1Step1 | ||
| public static string ComputeHash(string secret, string payload) | ||
| { | ||
| byte[] bytes = Encoding.UTF8.GetBytes(secret); | ||
| var hmac = new HMACSHA256(bytes); | ||
| bytes = Encoding.UTF8.GetBytes(payload); | ||
|
|
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| return Convert.ToBase64String(hmac.ComputeHash(bytes)); | ||
| } | ||
|
|
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| public static bool HashIsValid(string secret, string payload, string verify) | ||
| { | ||
| ReadOnlySpan<byte> hashBytes = Convert.FromBase64String(ComputeHash(secret, payload)); | ||
| ReadOnlySpan<byte> verifyBytes = Convert.FromBase64String(verify); | ||
|
|
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| return CryptographicOperations.FixedTimeEquals(hashBytes, verifyBytes); | ||
| } | ||
|
|
||
| //ds-snippet-end:Connect1Step1 | ||
| } | ||
| } |
53 changes: 53 additions & 0 deletions
53
launcher-csharp/Connect/Views/ValidateWebhookMessage/Con001.cshtml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| @{ | ||
| int formNumber = 0; | ||
| int hmacInputNumber = 0; | ||
| int jsonInputNumber = 1; | ||
| } | ||
|
|
||
| <h4>@Html.Raw(ViewBag.CodeExampleText.ExampleName)</h4> | ||
| <p> | ||
| @Html.Raw(ViewBag.CodeExampleText.ExampleDescription) | ||
| </p> | ||
|
|
||
| <partial name="../../../Views/Shared/LinkToMethodView" model="ViewBag.CodeExampleText" /> | ||
| <p> | ||
| @Html.Raw( | ||
| @String.Format( | ||
| ViewBag.SupportingTexts.ViewSourceFile, | ||
| "<a target='_blank' href=" + @ViewBag.source + ">HMACValidation.cs</a>" | ||
| ) | ||
| ) | ||
| </p> | ||
|
|
||
| <p> | ||
| <b>Prerequisites:</b> See <a href="https://developers.docusign.com/platform/webhooks/connect/validate/">How to validate an HMAC signature</a>. | ||
| </p> | ||
|
|
||
| <form class="eg" action="" method="post" data-busy="form"> | ||
| <div class="form-group" style="display: flex;"> | ||
| <label for="hmacSecret" style="width: 50%;"> | ||
| @Html.Raw(ViewBag.CodeExampleText.Forms[formNumber].Inputs[hmacInputNumber].InputName) | ||
| </label> | ||
|
|
||
| <input type="text" | ||
| class="form-control" | ||
| id="hmacSecret" | ||
| name="hmacSecret" | ||
| required/> | ||
| </div> | ||
| <div class="form-group"> | ||
| <label for="jsonPayload"> | ||
| @Html.Raw(ViewBag.CodeExampleText.Forms[formNumber].Inputs[jsonInputNumber].InputName) | ||
| </label> | ||
|
|
||
| <textarea | ||
| rows="6" | ||
| class="form-control" | ||
| id="jsonPayload" | ||
| name="jsonPayload" | ||
| required ></textarea> | ||
| </div> | ||
| <input type="hidden" name="_csrf" value="@ViewBag.csrfToken"> | ||
| <button type="submit" class="btn btn-primary">@Html.Raw(ViewBag.SupportingTexts.SubmitButton)</button> | ||
| </form> | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,28 +1,32 @@ | ||
| @model DocuSign.CodeExamples.ESignature.Models.CodeExampleText | ||
| @using Microsoft.EntityFrameworkCore.Migrations | ||
| @model DocuSign.CodeExamples.ESignature.Models.CodeExampleText | ||
| <p> | ||
| @if(Model.LinksToApiMethod.Count == 1) | ||
| @if (Model.LinksToApiMethod.Count != 0) | ||
| { | ||
| <span>@Html.Raw(ViewBag.SupportingTexts.ApiMethodUsed)</span> | ||
| } | ||
| else | ||
| { | ||
| <span>@Html.Raw(ViewBag.SupportingTexts.ApiMethodUsedPlural)</span> | ||
| } | ||
|
|
||
| @for(int i = 0; i < Model.LinksToApiMethod.Count; ++i) | ||
| { | ||
| <a target='_blank' href="@Model.LinksToApiMethod[i].Path">@Html.Raw(Model.LinksToApiMethod[i].PathName)</a> | ||
| @if(i + 1 == Model.LinksToApiMethod.Count) | ||
| @if (Model.LinksToApiMethod.Count == 1) | ||
| { | ||
| <span></span> | ||
| <span>@Html.Raw(ViewBag.SupportingTexts.ApiMethodUsed)</span> | ||
| } | ||
| else if(i + 1 == Model.LinksToApiMethod.Count - 1) | ||
| else | ||
| { | ||
| <span> and </span> | ||
| <span>@Html.Raw(ViewBag.SupportingTexts.ApiMethodUsedPlural)</span> | ||
| } | ||
| else | ||
|
|
||
| @for (int i = 0; i < Model.LinksToApiMethod.Count; ++i) | ||
| { | ||
| <span>, </span> | ||
| <a target='_blank' href="@Model.LinksToApiMethod[i].Path">@Html.Raw(Model.LinksToApiMethod[i].PathName)</a> | ||
| @if (i + 1 == Model.LinksToApiMethod.Count) | ||
| { | ||
| <span></span> | ||
| } | ||
| else if (i + 1 == Model.LinksToApiMethod.Count - 1) | ||
| { | ||
| <span> and </span> | ||
| } | ||
| else | ||
| { | ||
| <span>, </span> | ||
| } | ||
| } | ||
| } | ||
| </p> |
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