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Desktop/build/installer.nsh
2026-02-11 12:40:27 -06:00

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NSIS

# Copyright 2023 Signal Messenger, LLC
# SPDX-License-Identifier: AGPL-3.0-only
!include WinVer.nsh
!include SignalStrings.nsh
ManifestDPIAware true
# See https://github.com/electron-userland/electron-builder/blob/9c67fd31ce982d11c82aae71263ba1f0055a77cc/packages/app-builder-lib/src/targets/nsis/nsisScriptGenerator.ts#L33
# See https://nsis.sourceforge.io/LogicLib#FileExists
!macro _isWindowsStore _a _b _t _f
${StdUtils.TestParameter} $R9 "windows-store"
StrCmp "$R9" "true" `${_t}` `${_f}`
!macroend
!define isWindowsStore `"" isWindowsStore ""`
!macro preInit
Var /Global OLD_SIGNAL_VERSION
# Check minimum OS version
${IfNot} ${AtLeastWin10}
MessageBox MB_OK|MB_ICONEXCLAMATION "$(signalMinWinVersionErr)"
DetailPrint `Windows version check failed`
Abort
${EndIf}
# If previously installed
ReadRegStr $OLD_SIGNAL_VERSION SHELL_CONTEXT "${UNINSTALL_REGISTRY_KEY}" \
"DisplayVersion"
StrCmp $OLD_SIGNAL_VERSION "" end_semver_check
# Check that we are not overwriting newer version of the app.
${StdUtils.ScanStr3} $R0 $R1 $R2 "%d.%d.%d" $OLD_SIGNAL_VERSION 0 0 0
${StdUtils.ScanStr3} $R3 $R4 $R5 "%d.%d.%d" ${VERSION} 0 0 0
# Compare major number
IntCmp $R0 $R3 same_major end_semver_check downgrade
# Compare minor number
same_major:
IntCmp $R1 $R4 same_minor end_semver_check downgrade
# Compare patch number
same_minor:
IntCmp $R2 $R5 end_semver_check end_semver_check downgrade
# Detected downgrade - show message box
downgrade:
MessageBox MB_OKCANCEL|MB_ICONEXCLAMATION \
"$(signalMinAppVersionErr)" /SD IDCANCEL IDOK end_semver_check
DetailPrint `SemVer check failed`
Abort
end_semver_check:
!macroend
!macro customInstall
${If} ${Silent}
${AndIf} ${isUpdated}
# Copied from app-builder-lib templates/nsis/common.nsh:
# "otherwise app window will be in background"
HideWindow
# Signal modification: '--start-in-tray' added
${StdUtils.ExecShellAsUser} $0 "$launchLink" "open" \
"--updated --start-in-tray"
${ElseIf} ${Silent}
${AndIf} ${isWindowsStore}
HideWindow
${StdUtils.ExecShellAsUser} $0 "$launchLink" "open" ""
${EndIf}
!macroend