From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Mon, 27 May 2019 14:53:16 +0000 (+0300)
Subject: lib-http: http_client_request_remove_header() - Don't crash if no headers are added
X-Git-Tag: 2.2.36.4~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fdfaa20d9c2fab59b8e0f97dc023dcdefdda7011;p=thirdparty%2Fdovecot%2Fcore.git

lib-http: http_client_request_remove_header() - Don't crash if no headers are added

Fixes a crash if http_client_request_add_header() hasn't been called
before http_client_request_remove_header()
---

diff --git a/src/lib-http/http-client-request.c b/src/lib-http/http-client-request.c
index 6847b327b0..7f98bec58f 100644
--- a/src/lib-http/http-client-request.c
+++ b/src/lib-http/http-client-request.c
@@ -343,6 +343,9 @@ http_client_request_lookup_header_pos(struct http_client_request *req,
 	size_t size, line_len;
 	size_t key_len = strlen(key);
 
+	if (req->headers == NULL)
+		return FALSE;
+
 	data = str_data(req->headers);
 	size = str_len(req->headers);
 	while ((p = memchr(data, '\n', size)) != NULL) {