From aeceee1df3362de4c22e834da230ba408baaae5c Mon Sep 17 00:00:00 2001
From: calixteman <cdenizet@mozilla.com>
Date: Wed, 29 Oct 2025 15:41:34 +0100
Subject: [PATCH] Revert "Add some telemetry in order to know what are the
 certificates used in pdfs (bug 1973573)"

---
 src/core/document.js | 62 --------------------------------------------
 web/app.js           |  7 -----
 2 files changed, 69 deletions(-)

diff --git a/src/core/document.js b/src/core/document.js
index a3892751f..7bc738bb5 100644
--- a/src/core/document.js
+++ b/src/core/document.js
@@ -1167,49 +1167,6 @@ class PDFDocument {
     });
   }
 
-  #collectSignatureCertificates(
-    fields,
-    collectedSignatureCertificates,
-    visited = new RefSet()
-  ) {
-    if (!Array.isArray(fields)) {
-      return;
-    }
-    for (let field of fields) {
-      if (field instanceof Ref) {
-        if (visited.has(field)) {
-          continue;
-        }
-        visited.put(field);
-      }
-      field = this.xref.fetchIfRef(field);
-      if (!(field instanceof Dict)) {
-        continue;
-      }
-      if (field.has("Kids")) {
-        this.#collectSignatureCertificates(
-          field.get("Kids"),
-          collectedSignatureCertificates,
-          visited
-        );
-        continue;
-      }
-      const isSignature = isName(field.get("FT"), "Sig");
-      if (!isSignature) {
-        continue;
-      }
-      const value = field.get("V");
-      if (!(value instanceof Dict)) {
-        continue;
-      }
-      const subFilter = value.get("SubFilter");
-      if (!(subFilter instanceof Name)) {
-        continue;
-      }
-      collectedSignatureCertificates.add(subFilter.name);
-    }
-  }
-
   get _xfaStreams() {
     const { acroForm } = this.catalog;
     if (!acroForm) {
@@ -1525,20 +1482,6 @@ class PDFDocument {
       // specification).
       const sigFlags = acroForm.get("SigFlags");
       const hasSignatures = !!(sigFlags & 0x1);
-      if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
-        if (hasSignatures) {
-          const collectedSignatureCertificates = new Set();
-          this.#collectSignatureCertificates(
-            fields,
-            collectedSignatureCertificates
-          );
-          if (collectedSignatureCertificates.size > 0) {
-            formInfo.collectedSignatureCertificates = Array.from(
-              collectedSignatureCertificates
-            );
-          }
-        }
-      }
       const hasOnlyDocumentSignatures =
         hasSignatures && this.#hasOnlyDocumentSignatures(fields);
       formInfo.hasAcroForm = hasFields && !hasOnlyDocumentSignatures;
@@ -1566,11 +1509,6 @@ class PDFDocument {
       IsSignaturesPresent: formInfo.hasSignatures,
     };
 
-    if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
-      docInfo.collectedSignatureCertificates =
-        formInfo.collectedSignatureCertificates ?? null;
-    }
-
     let infoDict;
     try {
       infoDict = xref.trailer.get("Info");
diff --git a/web/app.js b/web/app.js
index 2dc66b6be..1f932d51a 100644
--- a/web/app.js
+++ b/web/app.js
@@ -1718,13 +1718,6 @@ const PDFViewerApplication = {
     if (pdfDocument !== this.pdfDocument) {
       return; // The document was closed while the metadata resolved.
     }
-    if (info.collectedSignatureCertificates) {
-      this.externalServices.reportTelemetry({
-        type: "signatureCertificates",
-        data: info.collectedSignatureCertificates,
-      });
-    }
-
     this.documentInfo = info;
     this.metadata = metadata;
     this._contentDispositionFilename ??= contentDispositionFilename;