Improve install.py script to attempt to detect when /tmp/ is noexec (#172)

* Improve install.py script to attempt to detect when /tmp/ is noexec

* Add test to install from python script at HEAD

* Remove incorrect duplicated line

* Delete the tmp hishtory-client download since it may be dropped in CWD rather than /tmp/

backend/web/landing/www/install.py

@@ -31,8 +31,20 @@ else:
 with urllib.request.urlopen(download_url) as response:
     hishtory_binary = response.read()
 
-tmpdir = os.environ.get('TMPDIR', '') or '/tmp/'
-tmpFilePath = tmpdir+'hishtory-client'
+def get_executable_tmpdir():
+    specified_dir = os.environ.get('TMPDIR', '') 
+    if specified_dir:
+        return specified_dir
+    try:
+        if hasattr(os, 'ST_NOEXEC'):
+            if os.statvfs("/tmp").f_flag & os.ST_NOEXEC:
+                # /tmp/ is mounted as NOEXEC, so fall back to the current working directory
+                return os.getcwd()
+    except:
+        pass
+    return "/tmp/"
+
+tmpFilePath = os.path.join(get_executable_tmpdir(), 'hishtory-client')
 if os.path.exists(tmpFilePath):
     os.remove(tmpFilePath)
 with open(tmpFilePath, 'wb') as f:
@@ -44,4 +56,5 @@ if os.environ.get('HISHTORY_OFFLINE'):
 exitCode = os.system(cmd)
 if exitCode != 0:
     raise Exception("failed to install downloaded hishtory client via `" + tmpFilePath +" install` (is that directory mounted noexec? Consider setting an alternate directory via the TMPDIR environment variable)!")
+os.remove(tmpFilePath)
 print('Succesfully installed hishtory! Open a new terminal, try running a command, and then running `hishtory query`.')

client/client_test.go

@@ -1107,6 +1107,42 @@ func testInstallViaPythonScriptChild(t *testing.T, tester shellTester) {
 	}
 }
 
+func TestInstallViaPythonScriptFromHead(t *testing.T) {
+	defer testutils.BackupAndRestore(t)()
+	tester := zshTester{}
+
+	// Set up
+	defer testutils.BackupAndRestoreEnv("HISHTORY_TEST")()
+
+	// Install via the python script
+	out := tester.RunInteractiveShell(t, `cat backend/web/landing/www/install.py | python3 -`)
+	require.Contains(t, out, "Succesfully installed hishtory")
+	r := regexp.MustCompile(`Setting secret hishtory key to (.*)`)
+	matches := r.FindStringSubmatch(out)
+	if len(matches) != 2 {
+		t.Fatalf("Failed to extract userSecret from output=%#v: matches=%#v", out, matches)
+	}
+	userSecret := matches[1]
+
+	// Test the status subcommand
+	downloadData, err := cmd.GetDownloadData(makeTestOnlyContextWithFakeConfig())
+	require.NoError(t, err)
+	out = tester.RunInteractiveShell(t, `hishtory status`)
+	expectedOut := fmt.Sprintf("hiSHtory: %s\nEnabled: true\nSecret Key: %s\nCommit Hash: ", downloadData.Version, userSecret)
+	require.Contains(t, out, expectedOut)
+
+	// And test that it recorded that command
+	time.Sleep(time.Second)
+	out = tester.RunInteractiveShell(t, `hishtory export -pipefail`)
+	if out != "hishtory status\n" {
+		t.Fatalf("unexpected output from hishtory export=%#v", out)
+	}
+
+	// And check that it installed in online mode
+	out = tester.RunInteractiveShell(t, `hishtory status -v`)
+	require.Contains(t, out, "\nSync Mode: Enabled\n")
+}
+
 func testExportWithQuery(t *testing.T, tester shellTester) {
 	// Setup
 	defer testutils.BackupAndRestore(t)()