internal: wrap calls to os standard library functions

This change helps tests stub out and simulate OS behaviour during the sealing process. This also removes dependency on XDG_RUNTIME_DIR as the internal.System implementation provided to App provides a compat directory inside the tmpdir-based share when XDG_RUNTIME_DIR is unavailable.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

1 files changed, 0 insertions, 58 deletions

diff --git a/internal/environ.go b/internal/environ.go
deleted file mode 100644
index 8f03cb34..00000000
--- a/internal/environ.go
+++ /dev/null
@@ -1,58 +0,0 @@
-package internal
-
-import (
-	"os"
-	"path"
-	"strconv"
-	"sync"
-
-	"git.ophivana.moe/security/fortify/internal/fmsg"
-)
-
-// state that remain constant for the lifetime of the process
-// fetched and cached here
-
-const (
-	xdgRuntimeDir = "XDG_RUNTIME_DIR"
-)
-
-// SystemConstants contains state from the operating system
-type SystemConstants struct {
-	// path to shared directory e.g. /tmp/fortify.%d
-	SharePath string `json:"share_path"`
-	// XDG_RUNTIME_DIR value e.g. /run/user/%d
-	RuntimePath string `json:"runtime_path"`
-	// application runtime directory e.g. /run/user/%d/fortify
-	RunDirPath string `json:"run_dir_path"`
-}
-
-var (
-	scVal  SystemConstants
-	scOnce sync.Once
-)
-
-func copySC() {
-	sc := SystemConstants{
-		SharePath: path.Join(os.TempDir(), "fortify."+strconv.Itoa(os.Geteuid())),
-	}
-
-	fmsg.VPrintf("process share directory at %q", sc.SharePath)
-
-	// runtimePath, runDirPath
-	if r, ok := os.LookupEnv(xdgRuntimeDir); !ok {
-		fmsg.Println("variable", xdgRuntimeDir, "unset")
-		os.Exit(1)
-	} else {
-		sc.RuntimePath = r
-		sc.RunDirPath = path.Join(sc.RuntimePath, "fortify")
-		fmsg.VPrintf("XDG runtime directory at %q", sc.RunDirPath)
-	}
-
-	scVal = sc
-}
-
-// GetSC returns a populated SystemConstants value
-func GetSC() SystemConstants {
-	scOnce.Do(copySC)
-	return scVal
-}