Add new _dbus_get_environment call

It's a wrapper around the environ external variable.
It will be important in the future when we allow
bus clients to modify the environment of future
activated clients. Presently, we just always use the
bus daemon environment wholesale.

2 files changed, 43 insertions, 0 deletions

diff --git a/dbus/dbus-sysdeps.c b/dbus/dbus-sysdeps.c
index 1a736e42..d740f875 100644
--- a/dbus/dbus-sysdeps.c
+++ b/dbus/dbus-sysdeps.c
@@ -200,6 +200,48 @@ _dbus_clearenv (void)
   return rc;
 }
 
+/**
+ * Gets a #NULL-terminated list of key=value pairs from the
+ * environment. Use dbus_free_string_array to free it.
+ *
+ * @returns the environment or #NULL on OOM
+ */
+char **
+_dbus_get_environment (void)
+{
+  int i, length;
+  extern char **environ;
+  char **environment;
+
+  _dbus_assert (environ != NULL);
+
+  for (length = 0; environ[length] != NULL; length++);
+
+  /* Add one for NULL */
+  length++;
+
+  environment = dbus_new0 (char *, length);
+
+  if (environment == NULL)
+    return NULL;
+
+  for (i = 0; environ[i] != NULL; i++)
+    {
+      environment[i] = _dbus_strdup (environ[i]);
+
+      if (environment[i] == NULL)
+        break;
+    }
+
+  if (environ[i] != NULL)
+    {
+      dbus_free_string_array (environment);
+      environment = NULL;
+    }
+
+  return environment;
+}
+
 /*
  * init a pipe instance.
  *
diff --git a/dbus/dbus-sysdeps.h b/dbus/dbus-sysdeps.h
index 5ff13884..80236f05 100644
--- a/dbus/dbus-sysdeps.h
+++ b/dbus/dbus-sysdeps.h
@@ -101,6 +101,7 @@ const char* _dbus_getenv (const char *varname);
 dbus_bool_t _dbus_setenv (const char *varname,
 			  const char *value);
 dbus_bool_t _dbus_clearenv (void);
+char **     _dbus_get_environment (void);
 
 /** A process ID */
 typedef unsigned long dbus_pid_t;