From ff524a2812b80fdee8601e3e17d1dcb4526a8524 Mon Sep 17 00:00:00 2001
From: Dario Curreri <48800335+dariocurr@users.noreply.github.com>
Date: Thu, 2 May 2024 13:45:13 +0200
Subject: [PATCH] Remove `CARGO_HOME` from passed env var (#262)

---
 dist/index.js | 44 ++++++++++++++++++++++++-------------
 src/index.ts  | 60 +++++++++++++++++++++++++++++++++++----------------
 2 files changed, 71 insertions(+), 33 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index f532e49..7b9ac11 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -11476,6 +11476,24 @@ const TARGET_ALIASES = {
         aarch64: 'aarch64-pc-windows-msvc'
     }
 };
+const ALLOWED_ENV_PREFIXES = [
+    'CARGO_',
+    'RUST',
+    'MATURIN_',
+    'PYO3_',
+    'TARGET_',
+    'CMAKE_',
+    'CC',
+    'CFLAGS',
+    'CXX',
+    'CXXFLAGS',
+    'CPPFLAGS',
+    'LDFLAGS',
+    'ACTIONS_',
+    'SCCACHE_',
+    'JEMALLOC_'
+];
+const FORBIDDEN_ENVS = ['CARGO_HOME'];
 function hasZigSupport(target) {
     if (target.startsWith('s390x')) {
         return false;
@@ -11832,21 +11850,7 @@ async function dockerBuild(container, maturinRelease, args) {
     core.endGroup();
     const dockerEnvs = [];
     for (const env of Object.keys(process.env)) {
-        if (env.startsWith('CARGO_') ||
-            env.startsWith('RUST') ||
-            env.startsWith('MATURIN_') ||
-            env.startsWith('PYO3_') ||
-            env.startsWith('TARGET_') ||
-            env.startsWith('CMAKE_') ||
-            env.startsWith('CC') ||
-            env.startsWith('CFLAGS') ||
-            env.startsWith('CXX') ||
-            env.startsWith('CXXFLAGS') ||
-            env.startsWith('CPPFLAGS') ||
-            env.startsWith('LDFLAGS') ||
-            env.startsWith('ACTIONS_') ||
-            env.startsWith('SCCACHE_') ||
-            env.startsWith('JEMALLOC_')) {
+        if (isDockerEnv(env)) {
             dockerEnvs.push('-e');
             dockerEnvs.push(env);
         }
@@ -11908,6 +11912,16 @@ async function dockerBuild(container, maturinRelease, args) {
     }
     return exitCode;
 }
+function isDockerEnv(env) {
+    if (!FORBIDDEN_ENVS.includes(env)) {
+        for (const prefix of ALLOWED_ENV_PREFIXES) {
+            if (env.startsWith(prefix)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
 async function installRustTarget(target, toolchain) {
     if (!target || target.length === 0) {
         return;
diff --git a/src/index.ts b/src/index.ts
index c4dfd50..47ebc7c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -149,6 +149,32 @@ const TARGET_ALIASES: Record<string, Record<string, string>> = {
   }
 }
 
+/**
+ * Allowed prefixes for env variables to pass to docker
+ */
+const ALLOWED_ENV_PREFIXES: string[] = [
+  'CARGO_',
+  'RUST',
+  'MATURIN_',
+  'PYO3_',
+  'TARGET_',
+  'CMAKE_',
+  'CC',
+  'CFLAGS',
+  'CXX',
+  'CXXFLAGS',
+  'CPPFLAGS',
+  'LDFLAGS',
+  'ACTIONS_',
+  'SCCACHE_',
+  'JEMALLOC_'
+]
+
+/**
+ * Forbidden env variables that should not be passed to docker
+ */
+const FORBIDDEN_ENVS: string[] = ['CARGO_HOME']
+
 /**
  * Does the target has Zig cross compilation support
  */
@@ -617,24 +643,7 @@ async function dockerBuild(
 
   const dockerEnvs = []
   for (const env of Object.keys(process.env)) {
-    if (
-      env.startsWith('CARGO_') ||
-      env.startsWith('RUST') ||
-      env.startsWith('MATURIN_') ||
-      env.startsWith('PYO3_') ||
-      env.startsWith('TARGET_') ||
-      env.startsWith('CMAKE_') ||
-      env.startsWith('CC') ||
-      env.startsWith('CFLAGS') ||
-      env.startsWith('CXX') ||
-      env.startsWith('CXXFLAGS') ||
-      env.startsWith('CPPFLAGS') ||
-      env.startsWith('LDFLAGS') ||
-      env.startsWith('ACTIONS_') ||
-      env.startsWith('SCCACHE_') ||
-      // for example JEMALLOC_SYS_WITH_LG_PAGE=16
-      env.startsWith('JEMALLOC_')
-    ) {
+    if (isDockerEnv(env)) {
       dockerEnvs.push('-e')
       dockerEnvs.push(env)
     }
@@ -706,6 +715,21 @@ async function dockerBuild(
   return exitCode
 }
 
+/**
+ * Check if an environment variable should be passed to docker
+ * @param env The name of the environment variable
+ */
+function isDockerEnv(env: string): boolean {
+  if (!FORBIDDEN_ENVS.includes(env)) {
+    for (const prefix of ALLOWED_ENV_PREFIXES) {
+      if (env.startsWith(prefix)) {
+        return true
+      }
+    }
+  }
+  return false
+}
+
 /**
  * Install Rust target using rustup
  * @param target Rust target name