Bug 1234339 part 1, Inform the updater and maintenance service of the new SHA2 certificate issuer, r=callek, a=rkent

mail/installer/windows/nsis/defines.nsi.in

@@ -23,8 +23,12 @@
 !define PreReleaseSuffix      "@PRE_RELEASE_SUFFIX@"
 !define BrandFullName         "${BrandFullNameInternal}${PreReleaseSuffix}"
 
-!define CERTIFICATE_NAME      "Mozilla Corporation"
-!define CERTIFICATE_ISSUER    "DigiCert Assured ID Code Signing CA-1"
+!define CERTIFICATE_NAME            "Mozilla Corporation"
+!define CERTIFICATE_ISSUER          "DigiCert SHA2 Assured ID Code Signing CA"
+; Changing the name or issuer requires us to have both the old and the new
+;  in the registry at the same time, temporarily.
+!define CERTIFICATE_NAME_PREVIOUS   "Mozilla Corporation"
+!define CERTIFICATE_ISSUER_PREVIOUS "DigiCert Assured ID Code Signing CA-1"
 
 # NO_INSTDIR_FROM_REG is defined for pre-releases which have a PreReleaseSuffix
 # (e.g. Alpha X, Beta X, etc.) to prevent finding a non-default installation

mail/installer/windows/nsis/maintenanceservice_installer.nsi

@@ -219,7 +219,7 @@ Section "MaintenanceService"
   ; These keys are used to bypass the installation dir is a valid installation
   ; check from the service so that tests can be run.
   ; WriteRegStr HKLM "${FallbackKey}\0" "name" "Mozilla Corporation"
-  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "DigiCert Assured ID Code Signing CA-1"
+  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "DigiCert SHA2 Assured ID Code Signing CA"
   ${If} ${RunningX64}
     SetRegView lastused
   ${EndIf}

mail/installer/windows/nsis/shared.nsh

@@ -577,6 +577,12 @@
     DeleteRegKey HKLM "$R0"
     WriteRegStr HKLM "$R0\0" "name" "${CERTIFICATE_NAME}"
     WriteRegStr HKLM "$R0\0" "issuer" "${CERTIFICATE_ISSUER}"
+    ; These values associate the allowed certificates for the previous
+    ;  installation, so that we can update from it cleanly using the
+    ;  old updater.exe (which will still have this signature).
+    WriteRegStr HKLM "$R0\1" "name" "${CERTIFICATE_NAME_PREVIOUS}"
+    WriteRegStr HKLM "$R0\1" "issuer" "${CERTIFICATE_ISSUER_PREVIOUS}"
+
     SetRegView lastused
     ClearErrors
   ${EndIf}