[PATCH V4 3/5] CryptoPkg: Update process_files.pl to automatically add PCD config option

["yi1 li" <yi1.li@intel.com>]

Recommend from Gerd:
(2) Keep the EC config option, but update process_files.pl to
  automatically add the PcdEcEnabled config option handling
  to the files it generates.

When remove 'no-ec' from openssl configure list, will automatically remove
'OPENSSL_NO_EC', 'OPENSSL_NO_ECDH', 'OPENSSL_NO_ECDSA', 'OPENSSL_NO_TLS1_3',
form header, and add '/ec/.', '/sm2/.' files to INF files.

Signed-off-by: Yi Li <yi1.li@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Xiaoyu Lu <xiaoyu1.lu@intel.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
---
 CryptoPkg/Library/OpensslLib/process_files.pl | 77 ++++++++++++++++++-
 1 file changed, 74 insertions(+), 3 deletions(-)

diff --git a/CryptoPkg/Library/OpensslLib/process_files.pl b/CryptoPkg/Library/OpensslLib/process_files.pl
index 2ebfbbbca0de..545f2182842b 100755
--- a/CryptoPkg/Library/OpensslLib/process_files.pl
+++ b/CryptoPkg/Library/OpensslLib/process_files.pl
@@ -81,6 +81,19 @@ my $uefi_config;
 my $extension;
 my $arch;
 my @inf;
+#
+# Use PCD to conditionally enable certain openssl features.
+# $conditional_feature contains pcd_name:fetures_names pairs
+# of conditional features.
+# @conditional_feature_dir contains relative_path:pcd_name pairs
+# of conditional features in openssl, MUST correspond to the content
+# in $conditional_feature.
+#
+# Configure list [openssl_configuration : new_define_list : new_file_list : pcd]
+# 1. no-ec : {NO_EC, NO_ECDH, NO_ECDSA, NO_TLS1_3, NO_SM2} : {/ec/, /sm2/} : PcdOpensslEcEnabled
+#
+my %conditional_feature = ("PcdOpensslEcEnabled"=>["EC", "ECDH", "ECDSA", "TLS1_3", "SM2"]);
+my %conditional_feature_dir = ("/ec/"=>"PcdOpensslEcEnabled", "/sm2/"=>"PcdOpensslEcEnabled");
 
 BEGIN {
     $inf_file = "OpensslLib.inf";
@@ -282,7 +295,13 @@ foreach my $product ((@{$unified_info{libraries}},
                 push @sslfilelist, '  $(OPENSSL_PATH)/' . $s . "\r\n";
                 next;
             }
-            push @cryptofilelist, '  $(OPENSSL_PATH)/' . $s . "\r\n";
+            push @cryptofilelist, '  $(OPENSSL_PATH)/' . $s;
+            foreach (keys(%conditional_feature_dir)) {
+                if ($s =~ $_) {
+                    push @cryptofilelist, '      |*|*|*|gEfiCryptoPkgTokenSpaceGuid.' . $conditional_feature_dir{$_};
+                }
+            }
+            push @cryptofilelist, "\r\n";
         }
     }
 }
@@ -311,7 +330,13 @@ foreach (@headers){
     push @sslfilelist, '  $(OPENSSL_PATH)/' . $_ . "\r\n";
     next;
   }
-  push @cryptofilelist, '  $(OPENSSL_PATH)/' . $_ . "\r\n";
+  push @cryptofilelist, '  $(OPENSSL_PATH)/' . $_;
+  foreach my $conditional_key (keys(%conditional_feature_dir)) {
+    if ($_ =~ $conditional_key) {
+        push @cryptofilelist, '      |*|*|*|gEfiCryptoPkgTokenSpaceGuid.' . $conditional_feature_dir{$conditional_key};
+    }
+  }
+  push @cryptofilelist, "\r\n";
 }
 
 
@@ -416,7 +441,7 @@ print "\n--> Duplicating opensslconf.h into Include/openssl ... ";
 system(
     "perl -pe 's/\\n/\\r\\n/' " .
     "< " . $OPENSSL_PATH . "/include/openssl/opensslconf.h " .
-    "> " . $OPENSSL_PATH . "/../../Include/openssl/opensslconf.h"
+    "> " . $OPENSSL_PATH . "/../../Include/openssl/opensslconf_generated.h"
     ) == 0 ||
     die "Cannot copy opensslconf.h!";
 print "Done!";
@@ -428,6 +453,52 @@ system(
     "> " . $OPENSSL_PATH . "/../../Include/crypto/dso_conf.h"
     ) == 0 ||
     die "Cannot copy dso_conf.h!";
+print "Done!";
+
+#
+# Add conditional feature to opensslconf.h
+#
+my $conf_file = "../Include/openssl/opensslconf.h";
+my @conf_raw = ();
+my @conditional_define = ();
+print "\n--> Updating conditional feature in $conf_file ... ";
+
+foreach my $pcd_name (keys(%conditional_feature)) {
+    push @conditional_define, "#if !FixedPcdGetBool ($pcd_name)\r\n";
+    foreach (@{$conditional_feature{$pcd_name}}) {
+        push @conditional_define, "# ifndef OPENSSL_NO_$_\r\n";
+        push @conditional_define, "#  define OPENSSL_NO_$_\r\n";
+        push @conditional_define, "# endif\r\n";
+    }
+    push @conditional_define, "#endif\r\n";
+}
+
+open( FD, "<" . $conf_file ) ||
+    die $conf_file;
+foreach (<FD>) {
+    # Insert conditional define to the begin of opensslconf.h
+    if ($_ =~ "Autogenerated conditional openssl feature list starts here") {
+        push @conf_raw, $_, @conditional_define;
+        $subbing = 1;
+        next;
+    }
+    if ($_ =~ "Autogenerated conditional openssl feature list ends here") {
+        push @conf_raw, $_;
+        $subbing = 0;
+        next;
+    }
+    push @conf_raw, $_
+        unless ($subbing);
+}
+close(FD) ||
+    die $conf_file;
+
+open( FD, ">" . $conf_file ) ||
+    die $conf_file;
+print( FD @conf_raw ) ||
+    die $conf_file;
+close(FD) ||
+    die $conf_file;
 print "Done!\n";
 
 print "\nProcessing Files Done!\n";
-- 
2.31.1.windows.1