core: hook: Try to use current shell, fallback on failure

Signed-off-by: Chloe M <chloe@faracom.org>

1 files changed, 17 insertions, 2 deletions

diff --git a/core/hook.c b/core/hook.c
index b915901..b2f3a2e 100644
--- a/core/hook.c
+++ b/core/hook.c
@@ -4,7 +4,9 @@
  */
 
 #include <sys/wait.h>
+#include <stdlib.h>
 #include <unistd.h>
+#include <stdio.h>
 #include "bop/hook.h"
 
 /* Shell we use by default */
@@ -18,17 +20,30 @@
 static void
 exec_shell_for(const char *script_path)
 {
+    char *shell_path;
+
     if (script_path == NULL) {
         return;
     }
 
-    execl(DEFAULT_SHELL_PATH, DEFAULT_SHELL_PATH, script_path, NULL);
+    /*
+     * We will attempt to use the current shell but if we cannot determine it,
+     * we will then fallback to the default shell path.
+     */
+    shell_path = getenv("SHELL");
+    if (shell_path == NULL) {
+        shell_path = DEFAULT_SHELL_PATH;
+        printf("warning: could not determine shell\n");
+        printf("warning: falling back to '%s'\n", shell_path);
+    }
+
+    execl(shell_path, shell_path, script_path, NULL);
 }
 
 /*
  * Run a shell hook with POSIX sh
  *
- * XXX: Maybe support '#!/bin/xxx'? 
+ * XXX: Maybe support '#!/bin/xxx'?
  */
 int
 bop_shell_hook(const char *hook_path)