From 91fc643ff975bf6b8384f9f0cc8325556280760e Mon Sep 17 00:00:00 2001
From: Jane-Kotovich <jenyakotovich@gmail.com>
Date: Tue, 26 Oct 2021 00:09:26 +1000
Subject: [PATCH] [api-minor] Implement securityHandler in the scripting API
 (bug 1731578)

---
 src/core/crypto.js                 |   1 +
 src/core/document.js               |   3 +++
 src/scripting_api/doc.js           |   3 ++-
 test/integration/scripting_spec.js |  22 ++++++++++++++++++++++
 test/pdfs/.gitignore               |   1 +
 test/pdfs/secHandler.pdf           | Bin 0 -> 7801 bytes
 test/unit/api_spec.js              |   3 +++
 7 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 test/pdfs/secHandler.pdf

diff --git a/src/core/crypto.js b/src/core/crypto.js
index 4074aa634..d76b6f483 100644
--- a/src/core/crypto.js
+++ b/src/core/crypto.js
@@ -1689,6 +1689,7 @@ const CipherTransformFactory = (function CipherTransformFactoryClosure() {
       if (!isName(filter, "Standard")) {
         throw new FormatError("unknown encryption method");
       }
+      this.filterName = filter.name;
       this.dict = dict;
       const algorithm = dict.get("V");
       if (
diff --git a/src/core/document.js b/src/core/document.js
index 61f630b66..bbe3fc836 100644
--- a/src/core/document.js
+++ b/src/core/document.js
@@ -1161,6 +1161,9 @@ class PDFDocument {
     const docInfo = {
       PDFFormatVersion: version,
       Language: this.catalog.lang,
+      EncryptFilterName: this.xref.encrypt
+        ? this.xref.encrypt.filterName
+        : null,
       IsLinearized: !!this.linearization,
       IsAcroFormPresent: this.formInfo.hasAcroForm,
       IsXFAPresent: this.formInfo.hasXfa,
diff --git a/src/scripting_api/doc.js b/src/scripting_api/doc.js
index c3ca6e226..905f9cfec 100644
--- a/src/scripting_api/doc.js
+++ b/src/scripting_api/doc.js
@@ -66,6 +66,7 @@ class Doc extends PDFObject {
     this._numPages = data.numPages || 1;
     this._pageNum = data.pageNum || 0;
     this._producer = data.Producer || "";
+    this._securityHandler = data.EncryptFilterName || null;
     this._subject = data.Subject || "";
     this._title = data.Title || "";
     this._URL = data.URL || "";
@@ -522,7 +523,7 @@ class Doc extends PDFObject {
   }
 
   get securityHandler() {
-    return null;
+    return this._securityHandler;
   }
 
   set securityHandler(_) {
diff --git a/test/integration/scripting_spec.js b/test/integration/scripting_spec.js
index 31ff21010..d3da48d67 100644
--- a/test/integration/scripting_spec.js
+++ b/test/integration/scripting_spec.js
@@ -896,4 +896,26 @@ describe("Interaction", () => {
       );
     });
   });
+
+  describe("in secHandler.pdf", () => {
+    let pages;
+
+    beforeAll(async () => {
+      pages = await loadAndWait("secHandler.pdf", "#\\32 5R");
+    });
+
+    afterAll(async () => {
+      await closePages(pages);
+    });
+    it("must print securityHandler value in a text field", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          const text = await actAndWaitForInput(page, "#\\32 5R", async () => {
+            await page.click("[data-annotation-id='26R']");
+          });
+          expect(text).withContext(`In ${browserName}`).toEqual("Standard");
+        })
+      );
+    });
+  });
 });
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index 5c84ef99c..460399ac5 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -477,3 +477,4 @@
 !issue12337.pdf
 !pr12564.pdf
 !pr12828.pdf
+!secHandler.pdf
diff --git a/test/pdfs/secHandler.pdf b/test/pdfs/secHandler.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..0c761455fa753c38478051ab3ef7e1f53b1247ce
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diff --git a/test/unit/api_spec.js b/test/unit/api_spec.js
index 2af09e5f8..bd4a7bfe5 100644
--- a/test/unit/api_spec.js
+++ b/test/unit/api_spec.js
@@ -1166,6 +1166,7 @@ describe("api", function () {
       // The following are PDF.js specific, non-standard, properties.
       expect(info.PDFFormatVersion).toEqual("1.7");
       expect(info.Language).toEqual("en");
+      expect(info.EncryptFilterName).toEqual(null);
       expect(info.IsLinearized).toEqual(false);
       expect(info.IsAcroFormPresent).toEqual(false);
       expect(info.IsXFAPresent).toEqual(false);
@@ -1201,6 +1202,7 @@ describe("api", function () {
       // The following are PDF.js specific, non-standard, properties.
       expect(info.PDFFormatVersion).toEqual("1.4");
       expect(info.Language).toEqual(null);
+      expect(info.EncryptFilterName).toEqual(null);
       expect(info.IsLinearized).toEqual(false);
       expect(info.IsAcroFormPresent).toEqual(false);
       expect(info.IsXFAPresent).toEqual(false);
@@ -1223,6 +1225,7 @@ describe("api", function () {
       // The following are PDF.js specific, non-standard, properties.
       expect(info.PDFFormatVersion).toEqual(null);
       expect(info.Language).toEqual(null);
+      expect(info.EncryptFilterName).toEqual(null);
       expect(info.IsLinearized).toEqual(false);
       expect(info.IsAcroFormPresent).toEqual(false);
       expect(info.IsXFAPresent).toEqual(false);