windows fix: use install root as base path for relative pathes in dbus service file

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=44030

diff --git a/dbus/dbus-spawn-win.c b/dbus/dbus-spawn-win.c
index b0cf90f..a7416cb 100644 (file)
--- a/dbus/dbus-spawn-win.c
+++ b/dbus/dbus-spawn-win.c
@@ -544,6 +544,7 @@ spawn_program (char* name, char** argv, char** envp)
   STARTUPINFOA si;
   char *arg_string, *env_string;
   BOOL result;
+  char exe_path[MAX_PATH];
 
 #ifdef DBUS_WINCE
   if (argv && argv[0])
@@ -558,14 +559,45 @@ spawn_program (char* name, char** argv, char** envp)
 
   env_string = build_env_string(envp);
 
+#ifndef DBUS_WINCE
+  // handle relative pathes
+  if (strlen(name) > 2 && name[0] != '\\' && name[0] != '/' && name[1] != ':')
+    {
+      _dbus_verbose ("babysitter: spawning %s", name);
+      char install_root[2*MAX_PATH];
+      LPSTR lpFile;
+      char *p;
+      if (!_dbus_get_install_root (install_root, sizeof(install_root)))
+        return INVALID_HANDLE_VALUE;
+
+      strcat(install_root,name);
+
+      // add exe extension, if not present
+      p = strrchr(name,'.');
+      if (!p)
+        strcat(install_root,".exe");
+
+      // convert '/' into '\\'
+      while((p = strchr(install_root,'/')) != 0)
+        *p = '\\';
+
+      // separate path from filename
+      p = strrchr(install_root,'\\');
+      // no complete path: error condition
+      if (!p)
+        return INVALID_HANDLE_VALUE;
+      *p = 0;
+      if (!SearchPathA(install_root, p+1, NULL, sizeof(exe_path), exe_path, &lpFile))
+        return INVALID_HANDLE_VALUE;
+    }
+  else
+#endif
+    strncpy(exe_path,name,MAX_PATH);
+
   memset (&si, 0, sizeof (si));
   si.cb = sizeof (si);
-#ifdef DBUS_WINCE
-  result = CreateProcessA (name, arg_string, NULL, NULL, FALSE, 0,
-#else
-  result = CreateProcessA (NULL, arg_string, NULL, NULL, FALSE, 0,
-#endif
-                          (LPVOID)env_string, NULL, &si, &pi);
+  result = CreateProcessA (exe_path, arg_string, NULL, NULL, FALSE, 0,
+               (LPVOID)env_string, NULL, &si, &pi);
   free (arg_string);
   if (env_string)
     free (env_string);