From f5d336cfedb7b5c5f5f10790635a0ce2d61c50cc Mon Sep 17 00:00:00 2001
From: "CanbiZ (MickLesk)" <47820557+MickLesk@users.noreply.github.com>
Date: Wed, 16 Sep 2026 11:59:19 +0200
Subject: [PATCH] tor-snowflake: read the Go version from the module root
 (#17276)

* tor-snowflake: read the Go version from the module root

Snowflake is a single Go module with go.mod at the repository root, not
under proxy/. The install read /opt/tor-snowflake/proxy/go.mod, which
has never existed, so grep failed and the version came out empty. Go
was then fetched from

  https://go.dev/dl/go.linux-amd64.tar.gz

with no version in the name, and the install aborted at that download.

Read the directive with a single awk instead of grep piped into awk.
The pipeline tripped catch_errors, which sets -Ee with pipefail and an
ERR trap, the moment the file was missing; that is the "exit code 2
while executing command awk" line that preceded the download failure.

Fall back to latest when the file cannot be read, so a future upstream
move of go.mod costs a Go version that is newer than the one pinned
rather than a failed build. setup_go already resolves latest, and also
resolves a bare major.minor to its newest patch, so a go directive
without a patch level stays fine.

Verified against v2.14.1: go.mod sits at the root and declares go
1.24.0, and the awk yields 1.24.0 from it and latest from a missing
file without tripping the ERR trap.

* Refactor GO_VERSION extraction in tor-snowflake.sh

Updated the method of extracting GO_VERSION from go.mod and set a default value if not found.
---
 ct/tor-snowflake.sh              | 3 ++-
 install/tor-snowflake-install.sh | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/ct/tor-snowflake.sh b/ct/tor-snowflake.sh
index 3bf693a15..ddbb0620b 100644
--- a/ct/tor-snowflake.sh
+++ b/ct/tor-snowflake.sh
@@ -44,7 +44,8 @@ function update_script() {
     msg_ok "Stopped Service"
 
     CLEAN_INSTALL=1 GITLAB_URL="https://gitlab.torproject.org" fetch_and_deploy_gl_release "tor-snowflake" "tpo/anti-censorship/pluggable-transports/snowflake" "tarball"
-    GO_VERSION="$(grep -m1 '^go ' /opt/tor-snowflake/proxy/go.mod | awk '{print $2}')" setup_go
+    GO_VERSION="$(awk '/^go /{print $2; exit}' /opt/tor-snowflake/go.mod 2>/dev/null || true)"
+    GO_VERSION="${GO_VERSION:-latest}" setup_go
 
     msg_info "Building Snowflake"
     cd /opt/tor-snowflake/proxy
diff --git a/install/tor-snowflake-install.sh b/install/tor-snowflake-install.sh
index d3a75a7df..4ec3d1ceb 100644
--- a/install/tor-snowflake-install.sh
+++ b/install/tor-snowflake-install.sh
@@ -16,7 +16,8 @@ update_os
 
 msg_info "Building Snowflake"
 GITLAB_URL="https://gitlab.torproject.org" fetch_and_deploy_gl_release "tor-snowflake" "tpo/anti-censorship/pluggable-transports/snowflake" "tarball"
-GO_VERSION="$(grep -m1 '^go ' /opt/tor-snowflake/proxy/go.mod | awk '{print $2}')" setup_go
+GO_VERSION="$(awk '/^go /{print $2; exit}' /opt/tor-snowflake/go.mod 2>/dev/null || true)"
+GO_VERSION="${GO_VERSION:-latest}" setup_go
 cd /opt/tor-snowflake/proxy
 $STD go build -o snowflake-proxy .
 msg_ok "Built Snowflake Proxy"