feat(new tool): pdf signature checker (#745)

7 files changed, 226 insertions, 3 deletions

diff --git a/src/tools/iban-validator-and-parser/iban-validator-and-parser.vue b/src/tools/iban-validator-and-parser/iban-validator-and-parser.vue
index 647be98..6844dc5 100644
--- a/src/tools/iban-validator-and-parser/iban-validator-and-parser.vue
+++ b/src/tools/iban-validator-and-parser/iban-validator-and-parser.vue
@@ -60,9 +60,11 @@ const ibanExamples = [
   <div>
     <c-input-text v-model:value="rawIban" placeholder="Enter an IBAN to check for validity..." test-id="iban-input" />
 
-    <c-key-value-list :items="ibanInfo" my-5 data-test-id="iban-info" />
+    <c-card v-if="ibanInfo.length > 0" mt-5>
+      <c-key-value-list :items="ibanInfo" data-test-id="iban-info" />
+    </c-card>
 
-    <c-card title="Valid IBAN examples">
+    <c-card title="Valid IBAN examples" mt-5>
       <div v-for="iban in ibanExamples" :key="iban">
         <c-text-copyable :value="iban" font-mono :displayed-value="friendlyFormatIBAN(iban)" />
       </div>
diff --git a/src/tools/index.ts b/src/tools/index.ts
index fa63d3d..52bdf8e 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -1,6 +1,7 @@
 import { tool as base64FileConverter } from './base64-file-converter';
 import { tool as base64StringConverter } from './base64-string-converter';
 import { tool as basicAuthGenerator } from './basic-auth-generator';
+import { tool as pdfSignatureChecker } from './pdf-signature-checker';
 import { tool as numeronymGenerator } from './numeronym-generator';
 import { tool as macAddressGenerator } from './mac-address-generator';
 import { tool as textToBinary } from './text-to-binary';
@@ -78,7 +79,7 @@ import { tool as xmlFormatter } from './xml-formatter';
 export const toolsByCategory: ToolCategory[] = [
   {
     name: 'Crypto',
-    components: [tokenGenerator, hashText, bcrypt, uuidGenerator, ulidGenerator, cypher, bip39, hmacGenerator, rsaKeyPairGenerator, passwordStrengthAnalyser],
+    components: [tokenGenerator, hashText, bcrypt, uuidGenerator, ulidGenerator, cypher, bip39, hmacGenerator, rsaKeyPairGenerator, passwordStrengthAnalyser, pdfSignatureChecker],
   },
   {
     name: 'Converter',
diff --git a/src/tools/pdf-signature-checker/components/pdf-signature-details.vue b/src/tools/pdf-signature-checker/components/pdf-signature-details.vue
new file mode 100644
index 0000000..c39f616
--- /dev/null
+++ b/src/tools/pdf-signature-checker/components/pdf-signature-details.vue
@@ -0,0 +1,99 @@
+<script setup lang="ts">
+import type { SignatureInfo } from '../pdf-signature-checker.types';
+
+const props = defineProps<{ signature: SignatureInfo }>();
+const { signature } = toRefs(props);
+
+const tableHeaders = {
+  validityPeriod: 'Validity period',
+  issuedBy: 'Issued by',
+  issuedTo: 'Issued to',
+  pemCertificate: 'PEM certificate',
+};
+
+const certs = computed(() => signature.value.meta.certs.map((certificate, index) => ({
+  ...certificate,
+  validityPeriod: {
+    notBefore: new Date(certificate.validityPeriod.notBefore).toLocaleString(),
+    notAfter: new Date(certificate.validityPeriod.notAfter).toLocaleString(),
+  },
+  certificateName: `Certificate ${index + 1}`,
+})),
+);
+</script>
+
+<template>
+  <div flex flex-col gap-2>
+    <c-table :data="certs" :headers="tableHeaders">
+      <template #validityPeriod="{ value }">
+        <c-key-value-list
+          :items="[{
+            label: 'Not before',
+            value: value.notBefore,
+          }, {
+            label: 'Not after',
+            value: value.notAfter,
+          }]"
+        />
+      </template>
+
+      <template #issuedBy="{ value }">
+        <c-key-value-list
+          :items="[{
+            label: 'Common name',
+            value: value.commonName,
+          }, {
+            label: 'Organization name',
+            value: value.organizationName,
+          }, {
+            label: 'Country name',
+            value: value.countryName,
+          }, {
+            label: 'Locality name',
+            value: value.localityName,
+          }, {
+            label: 'Organizational unit name',
+            value: value.organizationalUnitName,
+          }, {
+            label: 'State or province name',
+            value: value.stateOrProvinceName,
+          }]"
+        />
+      </template>
+
+      <template #issuedTo="{ value }">
+        <c-key-value-list
+          :items="[{
+            label: 'Common name',
+            value: value.commonName,
+          }, {
+            label: 'Organization name',
+            value: value.organizationName,
+          }, {
+            label: 'Country name',
+            value: value.countryName,
+          }, {
+            label: 'Locality name',
+            value: value.localityName,
+          }, {
+            label: 'Organizational unit name',
+            value: value.organizationalUnitName,
+          }, {
+            label: 'State or province name',
+            value: value.stateOrProvinceName,
+          }]"
+        />
+      </template>
+
+      <template #pemCertificate="{ value }">
+        <c-modal-value :value="value" label="View PEM cert">
+          <template #value>
+            <div break-all text-xs>
+              {{ value }}
+            </div>
+          </template>
+        </c-modal-value>
+      </template>
+    </c-table>
+  </div>
+</template>
diff --git a/src/tools/pdf-signature-checker/index.ts b/src/tools/pdf-signature-checker/index.ts
new file mode 100644
index 0000000..5456397
--- /dev/null
+++ b/src/tools/pdf-signature-checker/index.ts
@@ -0,0 +1,12 @@
+import { defineTool } from '../tool';
+import FileCertIcon from '~icons/mdi/file-certificate-outline';
+
+export const tool = defineTool({
+  name: 'PDF signature checker',
+  path: '/pdf-signature-checker',
+  description: 'Verify the signatures of a PDF file. A signed PDF file contains one or more signatures that may be used to determine whether the contents of the file have been altered since the file was signed.',
+  keywords: ['pdf', 'signature', 'checker', 'verify', 'validate', 'sign'],
+  component: () => import('./pdf-signature-checker.vue'),
+  icon: FileCertIcon,
+  createdAt: new Date('2023-12-09'),
+});
diff --git a/src/tools/pdf-signature-checker/pdf-signature-checker.e2e.spec.ts b/src/tools/pdf-signature-checker/pdf-signature-checker.e2e.spec.ts
new file mode 100644
index 0000000..8e9a287
--- /dev/null
+++ b/src/tools/pdf-signature-checker/pdf-signature-checker.e2e.spec.ts
@@ -0,0 +1,11 @@
+import { expect, test } from '@playwright/test';
+
+test.describe('Tool - Pdf signature checker', () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto('/pdf-signature-checker');
+  });
+
+  test('Has correct title', async ({ page }) => {
+    await expect(page).toHaveTitle('PDF signature checker - IT Tools');
+  });
+});
diff --git a/src/tools/pdf-signature-checker/pdf-signature-checker.types.ts b/src/tools/pdf-signature-checker/pdf-signature-checker.types.ts
new file mode 100644
index 0000000..6932509
--- /dev/null
+++ b/src/tools/pdf-signature-checker/pdf-signature-checker.types.ts
@@ -0,0 +1,39 @@
+export interface SignatureInfo {
+  verified: boolean
+  authenticity: boolean
+  integrity: boolean
+  expired: boolean
+  meta: {
+    certs: {
+      clientCertificate?: boolean
+      issuedBy: {
+        commonName: string
+        organizationalUnitName?: string
+        organizationName: string
+        countryName?: string
+        localityName?: string
+        stateOrProvinceName?: string
+      }
+      issuedTo: {
+        commonName: string
+        serialNumber?: string
+        organizationalUnitName?: string
+        organizationName: string
+        countryName?: string
+        localityName?: string
+        stateOrProvinceName?: string
+      }
+      validityPeriod: {
+        notBefore: string
+        notAfter: string
+      }
+      pemCertificate: string
+    }[]
+    signatureMeta: {
+      reason: string
+      contactInfo: string | null
+      location: string
+      name: string | null
+    }
+  }
+}
diff --git a/src/tools/pdf-signature-checker/pdf-signature-checker.vue b/src/tools/pdf-signature-checker/pdf-signature-checker.vue
new file mode 100644
index 0000000..0220616
--- /dev/null
+++ b/src/tools/pdf-signature-checker/pdf-signature-checker.vue
@@ -0,0 +1,59 @@
+<script setup lang="ts">
+import verifyPDF from 'pdf-signature-reader';
+import type { SignatureInfo } from './pdf-signature-checker.types';
+import { formatBytes } from '@/utils/convert';
+
+const signatures = ref<SignatureInfo[]>([]);
+const status = ref<'idle' | 'parsed' | 'error' | 'loading'>('idle');
+const file = ref<File | null>(null);
+
+async function onVerifyClicked(uploadedFile: File) {
+  file.value = uploadedFile;
+  const fileBuffer = await uploadedFile.arrayBuffer();
+
+  status.value = 'loading';
+  try {
+    const { signatures: parsedSignatures } = verifyPDF(fileBuffer);
+    signatures.value = parsedSignatures;
+    status.value = 'parsed';
+  }
+  catch (e) {
+    signatures.value = [];
+    status.value = 'error';
+  }
+}
+</script>
+
+<template>
+  <div style="flex: 0 0 100%">
+    <div mx-auto max-w-600px>
+      <c-file-upload title="Drag and drop a PDF file here, or click to select a file" accept=".pdf" @file-upload="onVerifyClicked" />
+
+      <c-card v-if="file" mt-4 flex gap-2>
+        <div font-bold>
+          {{ file.name }}
+        </div>
+
+        <div>
+          {{ formatBytes(file.size) }}
+        </div>
+      </c-card>
+
+      <div v-if="status === 'error'">
+        <c-alert mt-4>
+          No signatures found in the provided file.
+        </c-alert>
+      </div>
+    </div>
+  </div>
+
+  <div v-if="status === 'parsed' && signatures.length" style="flex: 0 0 100%" mt-5 flex flex-col gap-4>
+    <div v-for="(signature, index) of signatures" :key="index">
+      <div mb-2 font-bold>
+        Signature {{ index + 1 }} certificates :
+      </div>
+
+      <pdf-signature-details :signature="signature" />
+    </div>
+  </div>
+</template>