From ab1e3db665f853cac3284f228601f63ea502d3ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9D=8E=E9=80=9A=E6=B4=B2?= <zhangsongcui3371@sina.com>
Date: Sat, 13 Jan 2024 23:15:47 +0800
Subject: [PATCH] Shell (Linux): detect ash version

---
 src/detection/terminalshell/terminalshell.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/detection/terminalshell/terminalshell.c b/src/detection/terminalshell/terminalshell.c
index 68b963e07..118b4c70f 100644
--- a/src/detection/terminalshell/terminalshell.c
+++ b/src/detection/terminalshell/terminalshell.c
@@ -152,6 +152,22 @@ static bool getShellVersionNushell(FFstrbuf* exe, FFstrbuf* version)
     return getExeVersionRaw(exe, version); //0.73.0
 }
 
+static bool getShellVersionAsh(FFstrbuf* exe, FFstrbuf* version)
+{
+    if(ffProcessAppendStdErr(version, (char* const[]) {
+        exe->chars,
+        "--help",
+        NULL
+    }) != NULL)
+        return false;
+
+    // BusyBox v1.36.1 (2023-11-07 18:53:09 UTC) multi-call binary...
+    ffStrbufSubstrAfterFirstC(version, ' ');
+    ffStrbufSubstrBeforeFirstC(version, ' ');
+    ffStrbufTrimLeft(version, 'v');
+    return true;
+}
+
 #ifdef _WIN32
 static bool getShellVersionWinPowerShell(FFstrbuf* exe, FFstrbuf* version)
 {
@@ -210,6 +226,8 @@ bool fftsGetShellVersion(FFstrbuf* exe, const char* exeName, FFstrbuf* version)
         return getShellVersionOils(exe, version);
     if(strcasecmp(exeName, "elvish") == 0)
         return getExeVersionRaw(exe, version);
+    if(strcasecmp(exeName, "ash") == 0)
+        return getShellVersionAsh(exe, version);
     if(strcasecmp(exeName, "python") == 0 && getenv("XONSH_VERSION"))
     {
         ffStrbufSetS(version, getenv("XONSH_VERSION"));