Add sanity detection for header name

diff --git a/src/libmime/mime_expressions.c b/src/libmime/mime_expressions.c
index 57275e00468990a852479dc6d9892420d61a1848..4bfc6c0f176263d7cdd3bf9249d152732e005fce 100644 (file)
--- a/src/libmime/mime_expressions.c
+++ b/src/libmime/mime_expressions.c
@@ -634,9 +634,20 @@ set:
                        /* Register new item in the cache */
                        if (mime_atom->d.re->type == RSPAMD_RE_HEADER ||
                                        mime_atom->d.re->type == RSPAMD_RE_RAWHEADER) {
-                               rspamd_re_cache_add (cfg->re_cache, mime_atom->d.re->regexp,
-                                               mime_atom->d.re->type, mime_atom->d.re->header,
-                                               strlen (mime_atom->d.re->header) + 1);
+                               if (mime_atom->d.re->header != NULL) {
+                                       rspamd_re_cache_add (cfg->re_cache, mime_atom->d.re->regexp,
+                                                       mime_atom->d.re->type, mime_atom->d.re->header,
+                                                       strlen (mime_atom->d.re->header) + 1);
+                               }
+                               else {
+                                       /* We have header regexp, but no header name is detected */
+                                       g_set_error (err,
+                                                       rspamd_mime_expr_quark (),
+                                                       200,
+                                                       "no header name in /H regexp: '%s'",
+                                                       mime_atom->str);
+                                       goto err;
+                               }
                        }
                        else {
                                rspamd_re_cache_add (cfg->re_cache, mime_atom->d.re->regexp,