Bug 1974973 - [devtools] Stop escaping for other platforms when selecting Copy as curl (POSIX) r=devtools-reviewers,ochameau a=RyanVM

- This patch should revert the fixes from Bug 1960198, Bug 1949994 and Bug 1962301.
- The goal of this patch is Copy as curl (POSIX) should only work on Linux.

Differential Revision: https://phabricator.services.mozilla.com/D255784

devtools/client/netmonitor/test/browser_net_curl-utils.js

@@ -269,7 +269,14 @@ function testEscapeStringPosix() {
   const escapeChar = "'!ls:q:gs|ls|;ping 8.8.8.8;|";
   is(
     CurlUtils.escapeStringPosix(escapeChar),
-    "$'\\'\\041ls:q:gs^|ls^|;ping 8.8.8.8;^|'",
+    "$'\\'\\041ls:q:gs|ls|;ping 8.8.8.8;|'",
+    "'!' should be escaped."
+  );
+
+  const escapeBangOnlyChar = "!";
+  is(
+    CurlUtils.escapeStringPosix(escapeBangOnlyChar),
+    "$'\\041'",
     "'!' should be escaped."
   );
 
@@ -295,21 +302,6 @@ function testEscapeStringPosix() {
     "$'\\xc3\\xa6 \\xc3\\xb8 \\xc3\\xbc \\xc3\\x9f \\xc3\\xb6 \\xc3\\xa9'",
     "Character codes outside of the decimal range 32 - 126 should be escaped."
   );
-
-  // Assert that ampersands are correctly escaped in case its tried to run on Windows
-  const evilCommand = `query=evil\n\ncmd & calc.exe\n\n`;
-  is(
-    CurlUtils.escapeStringPosix(evilCommand),
-    "$'query=evil\\n\\ncmd ^& calc.exe\\n\\n'",
-    "The evil command is escaped properly"
-  );
-
-  const str = "EvilHeader: &calc.exe&";
-  is(
-    CurlUtils.escapeStringPosix(str),
-    "'EvilHeader: ^&calc.exe^&'",
-    "The evil command is escaped properly"
-  );
 }
 
 function testEscapeStringWin() {

devtools/client/shared/curl.js

@@ -421,10 +421,9 @@ const CurlUtils = {
       return "\\u" + ("0000" + code).substr(code.length, 4);
     }
 
-    // Escape & and |, which are special characters on Windows.
-    const winSpecialCharsRegEx = /([&\|])/g;
-
-    if (/[^\x20-\x7E]|\'/.test(str)) {
+    // Escape characters which are not within the charater range
+    // SPACE to "~"(char codes 32 - 126), the `!` (code 33) and '(code 39);
+    if (/[^\x20-\x7E]|!|\'/.test(str)) {
       // Use ANSI-C quoting syntax.
       return (
         "$'" +
@@ -434,14 +433,13 @@ const CurlUtils = {
           .replace(/\n/g, "\\n")
           .replace(/\r/g, "\\r")
           .replace(/!/g, "\\041")
-          .replace(winSpecialCharsRegEx, "^$1")
           .replace(/[^\x20-\x7E]/g, escapeCharacter) +
         "'"
       );
     }
 
     // Use single quote syntax.
-    return "'" + str.replace(winSpecialCharsRegEx, "^$1") + "'";
+    return "'" + str + "'";
   },
 
   /**