From 1d1c69ca51d7bcc5ddba79031dc67df9bec465b2 Mon Sep 17 00:00:00 2001
From: n1474335 <n1474335@gmail.com>
Date: Fri, 23 Nov 2018 14:58:30 +0000
Subject: [PATCH] Updated magic pattern matches for QP and B64 encodings to
 handle whitespace better

---
 src/core/operations/FromBase64.mjs          | 48 ++++++++++-----------
 src/core/operations/FromQuotedPrintable.mjs |  2 +-
 2 files changed, 25 insertions(+), 25 deletions(-)

diff --git a/src/core/operations/FromBase64.mjs b/src/core/operations/FromBase64.mjs
index 117faa2b..be049802 100644
--- a/src/core/operations/FromBase64.mjs
+++ b/src/core/operations/FromBase64.mjs
@@ -38,44 +38,44 @@ class FromBase64 extends Operation {
         ];
         this.patterns = [
             {
-                match: "^(?:[A-Z\\d+/]{4})+(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?$",
+                match: "^\\s*(?:[A-Z\\d+/]{4})+(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?\\s*$",
                 flags: "i",
-                args: ["A-Za-z0-9+/=", false]
+                args: ["A-Za-z0-9+/=", true]
             },
             {
-                match: "^[A-Z\\d\\-_]{20,}$",
+                match: "^\\s*[A-Z\\d\\-_]{20,}\\s*$",
                 flags: "i",
-                args: ["A-Za-z0-9-_", false]
+                args: ["A-Za-z0-9-_", true]
             },
             {
-                match: "^(?:[A-Z\\d+\\-]{4}){5,}(?:[A-Z\\d+\\-]{2}==|[A-Z\\d+\\-]{3}=)?$",
+                match: "^\\s*(?:[A-Z\\d+\\-]{4}){5,}(?:[A-Z\\d+\\-]{2}==|[A-Z\\d+\\-]{3}=)?\\s*$",
                 flags: "i",
-                args: ["A-Za-z0-9+\\-=", false]
+                args: ["A-Za-z0-9+\\-=", true]
             },
             {
-                match: "^(?:[A-Z\\d./]{4}){5,}(?:[A-Z\\d./]{2}==|[A-Z\\d./]{3}=)?$",
+                match: "^\\s*(?:[A-Z\\d./]{4}){5,}(?:[A-Z\\d./]{2}==|[A-Z\\d./]{3}=)?\\s*$",
                 flags: "i",
-                args: ["./0-9A-Za-z=", false]
+                args: ["./0-9A-Za-z=", true]
             },
             {
-                match: "^[A-Z\\d_.]{20,}$",
+                match: "^\\s*[A-Z\\d_.]{20,}\\s*$",
                 flags: "i",
-                args: ["A-Za-z0-9_.", false]
+                args: ["A-Za-z0-9_.", true]
             },
             {
-                match: "^(?:[A-Z\\d._]{4}){5,}(?:[A-Z\\d._]{2}--|[A-Z\\d._]{3}-)?$",
+                match: "^\\s*(?:[A-Z\\d._]{4}){5,}(?:[A-Z\\d._]{2}--|[A-Z\\d._]{3}-)?\\s*$",
                 flags: "i",
-                args: ["A-Za-z0-9._-", false]
+                args: ["A-Za-z0-9._-", true]
             },
             {
-                match: "^(?:[A-Z\\d+/]{4}){5,}(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?$",
+                match: "^\\s*(?:[A-Z\\d+/]{4}){5,}(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?\\s*$",
                 flags: "i",
-                args: ["0-9a-zA-Z+/=", false]
+                args: ["0-9a-zA-Z+/=", true]
             },
             {
-                match: "^(?:[A-Z\\d+/]{4}){5,}(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?$",
+                match: "^\\s*(?:[A-Z\\d+/]{4}){5,}(?:[A-Z\\d+/]{2}==|[A-Z\\d+/]{3}=)?\\s*$",
                 flags: "i",
-                args: ["0-9A-Za-z+/=", false]
+                args: ["0-9A-Za-z+/=", true]
             },
             {
                 match: "^[ !\"#$%&'()*+,\\-./\\d:;<=>?@A-Z[\\\\\\]^_]{20,}$",
@@ -83,24 +83,24 @@ class FromBase64 extends Operation {
                 args: [" -_", false]
             },
             {
-                match: "^[A-Z\\d+\\-]{20,}$",
+                match: "^\\s*[A-Z\\d+\\-]{20,}\\s*$",
                 flags: "i",
-                args: ["+\\-0-9A-Za-z", false]
+                args: ["+\\-0-9A-Za-z", true]
             },
             {
-                match: "^[!\"#$%&'()*+,\\-0-689@A-NP-VX-Z[`a-fh-mp-r]{20,}$",
+                match: "^\\s*[!\"#$%&'()*+,\\-0-689@A-NP-VX-Z[`a-fh-mp-r]{20,}\\s*$",
                 flags: "",
-                args: ["!-,-0-689@A-NP-VX-Z[`a-fh-mp-r", false]
+                args: ["!-,-0-689@A-NP-VX-Z[`a-fh-mp-r", true]
             },
             {
-                match: "^(?:[N-ZA-M\\d+/]{4}){5,}(?:[N-ZA-M\\d+/]{2}==|[N-ZA-M\\d+/]{3}=)?$",
+                match: "^\\s*(?:[N-ZA-M\\d+/]{4}){5,}(?:[N-ZA-M\\d+/]{2}==|[N-ZA-M\\d+/]{3}=)?\\s*$",
                 flags: "i",
-                args: ["N-ZA-Mn-za-m0-9+/=", false]
+                args: ["N-ZA-Mn-za-m0-9+/=", true]
             },
             {
-                match: "^[A-Z\\d./]{20,}$",
+                match: "^\\s*[A-Z\\d./]{20,}\\s*$",
                 flags: "i",
-                args: ["./0-9A-Za-z", false]
+                args: ["./0-9A-Za-z", true]
             },
         ];
     }
diff --git a/src/core/operations/FromQuotedPrintable.mjs b/src/core/operations/FromQuotedPrintable.mjs
index ee079ec6..61466e4e 100644
--- a/src/core/operations/FromQuotedPrintable.mjs
+++ b/src/core/operations/FromQuotedPrintable.mjs
@@ -30,7 +30,7 @@ class FromQuotedPrintable extends Operation {
         this.args = [];
         this.patterns = [
             {
-                match: "^[\\x21-\\x3d\\x3f-\\x7e \\t]*(?:=[\\da-f]{2}|=\\r?\\n)(?:[\\x21-\\x3d\\x3f-\\x7e \\t]|=[\\da-f]{2}|=\\r?\\n)*$",
+                match: "^[\\x21-\\x3d\\x3f-\\x7e \\t]{0,76}(?:=[\\da-f]{2}|=\\r?\\n)(?:[\\x21-\\x3d\\x3f-\\x7e \\t]|=[\\da-f]{2}|=\\r?\\n)*$",
                 flags: "i",
                 args: []
             },