desktop_launcher_helpers.nsh

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# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

!ifndef DESKTOP_LAUNCHER_HELPERS_NSH

!define DESKTOP_LAUNCHER_HELPERS_NSH

; Looks at installation_telemetry.json to determine whether the installation

; was installed by the stub installer or not.

; Expects the JSON file on the stack as a parameter; will return the

; installation type from the JSON file, generally either "stub" or "full".

; On failure, pushes "unknown".

Function GetInstallationType

  Exch $1 ; directory

  Push $0 ; temporary variable

  nsJSON::Set /file /unicode "$1"

  nsJSON::Get /type `installer_type` /end

  Pop $0

  ${If} $0 == ""

    ; It's only ever written as UTF-16, but decode it as ANSI for redundancy.

    nsJSON::Set /file "$1"

    nsJSON::Get /type `installer_type` /end

    Pop $0 ; type

  ${EndIf}

  ClearErrors

  StrCpy $1 "unknown"

  ${If} $0 == "string"

    nsJSON::Get `installer_type` /end

    ${IfNot} ${Errors}

      ; get the actual installer type from the file

      Pop $1

    ${EndIf}

  ${EndIf}

  Exch

  Pop $0

  Exch $1

  ClearErrors

FunctionEnd

!endif

Function GetInstallationTelemetryFromMsi

  Pop $0

  ClearErrors

  nsJSON::Set /file /unicode "$0"

  ${If} ${Errors}

    SetErrors

    Push 0

    Return

  ${EndIf}

  nsJSON::Get /type `from_msi` /end

  ${If} ${Errors}

    SetErrors

    Push 0

    Return

  ${EndIf}

  Pop $1

  ${If} $1 != "value"

    SetErrors

    Push 0

    Return

  ${EndIf}

  nsJSON::Get `from_msi` /end

  ${If} ${Errors}

    SetErrors

    Push 0

    Return

  ${EndIf}

  Pop $1

  ${If} $1 == "true"

    Push 1

  ${ElseIf} $1 == "false"

    Push 0

  ${Else}

    SetErrors

    Push 0

  ${EndIf}

FunctionEnd

Function IsUpdateChannelEsr

  Exch $0

  ${If} $0 == "esr"

    StrCpy $0 1

  ${Else}

    StrCpy $0 0

  ${EndIf}

  Exch $0

FunctionEnd

Function ShouldInstallDesktopLauncher

  Push $0

  ${GetParameters} $0

  ClearErrors

  ${GetOptions} "$0" "/DesktopLauncher" "$0"

  ${IfNot} ${Errors}

    StrCpy $0 1

  ${Else}

    StrCpy $0 0

  ${EndIf}

  Exch $0

FunctionEnd