Currently ocserv's 404 errors show up as a blank page in most web
browsers. Add a simple HTML error page.
---
src/worker-http-handlers.c | 16 ++++++++++++++--
src/worker-vpn.c | 9 ++++-----
src/worker.h | 1 +
3 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/src/worker-http-handlers.c b/src/worker-http-handlers.c
index 8303fb262156..e698bc28f13f 100644
--- a/src/worker-http-handlers.c
+++ b/src/worker-http-handlers.c
@@ -39,6 +39,18 @@
#include <cookies.h>
#include <tlslib.h>
+static const char html_404[] = "<html><body><h1>404 Not Found</h1></body></html>\r\n";
+
+int response_404(worker_st *ws, unsigned http_ver)
+{
+ if (cstp_printf(ws, "HTTP/1.%u 404 Not found\r\n", http_ver) < 0 ||
+ cstp_printf(ws, "Content-length: %u\r\n", (unsigned)strlen(html_404)) < 0 ||
+ cstp_puts (ws, "Connection: close\r\n\r\n") < 0 ||
+ cstp_puts (ws, html_404) < 0)
+ return -1;
+ return 0;
+}
+
#ifdef ANYCONNECT_CLIENT_COMPAT
static int send_headers(worker_st *ws, unsigned http_ver, const char *content_type,
unsigned content_length)
@@ -80,14 +92,14 @@ int get_config_handler(worker_st *ws, unsigned http_ver)
if (ws->user_config->xml_config_file == NULL) {
oclog(ws, LOG_INFO, "requested config but no config file is set");
- cstp_printf(ws, "HTTP/1.%u 404 Not found\r\n", http_ver);
+ response_404(ws, http_ver);
return -1;
}
ret = stat(ws->user_config->xml_config_file, &st);
if (ret == -1) {
oclog(ws, LOG_INFO, "cannot load config file '%s'", ws->user_config->xml_config_file);
- cstp_printf(ws, "HTTP/1.%u 404 Not found\r\n", http_ver);
+ response_404(ws, http_ver);
return -1;
}
diff --git a/src/worker-vpn.c b/src/worker-vpn.c
index 3a0214d67c89..676415f47755 100644
--- a/src/worker-vpn.c
+++ b/src/worker-vpn.c
@@ -524,7 +524,7 @@ void vpn_server(struct worker_st *ws)
fn = http_get_url_handler(ws->req.url);
if (fn == NULL) {
oclog(ws, LOG_HTTP_DEBUG, "unexpected URL %s", ws->req.url);
- cstp_puts(ws, "HTTP/1.1 404 Not found\r\n\r\n");
+ response_404(ws, parser.http_minor);
goto finish;
}
ret = fn(ws, parser.http_minor);
@@ -559,7 +559,7 @@ void vpn_server(struct worker_st *ws)
if (fn == NULL) {
oclog(ws, LOG_HTTP_DEBUG, "unexpected POST URL %s",
ws->req.url);
- cstp_puts(ws, "HTTP/1.1 404 Not found\r\n\r\n");
+ response_404(ws, parser.http_minor);
goto finish;
}
@@ -578,8 +578,7 @@ void vpn_server(struct worker_st *ws)
} else {
oclog(ws, LOG_HTTP_DEBUG, "unexpected HTTP method %s",
http_method_str(parser.method));
- cstp_printf(ws, "HTTP/1.%u 404 Nah, go away\r\n\r\n",
- parser.http_minor);
+ response_404(ws, parser.http_minor);
}
finish:
@@ -1346,7 +1345,7 @@ static int connect_handler(worker_st * ws)
if (strcmp(req->url, "/CSCOSSLC/tunnel") != 0) {
oclog(ws, LOG_INFO, "bad connect request: '%s'\n", req->url);
- cstp_puts(ws, "HTTP/1.1 404 Nah, go away\r\n\r\n");
+ response_404(ws, 1);
cstp_fatal_close(ws, GNUTLS_A_ACCESS_DENIED);
exit_worker(ws);
}
diff --git a/src/worker.h b/src/worker.h
index 04751a7290b5..bd0ffc2f1fdf 100644
--- a/src/worker.h
+++ b/src/worker.h
@@ -288,6 +288,7 @@ int get_auth_handler(worker_st *server, unsigned http_ver);
int post_auth_handler(worker_st *server, unsigned http_ver);
int post_kkdcp_handler(worker_st *server, unsigned http_ver);
+int response_404(worker_st *ws, unsigned http_ver);
int get_empty_handler(worker_st *server, unsigned http_ver);
int get_config_handler(worker_st *ws, unsigned http_ver);
int get_string_handler(worker_st *ws, unsigned http_ver);
--
2.7.0
