Merge pull request #19413 from Faless/lws_3.0

Update libwebsockets to version 3.0

1 files changed, 182 insertions, 0 deletions

diff --git a/thirdparty/libwebsockets/roles/http/server/access-log.c b/thirdparty/libwebsockets/roles/http/server/access-log.c
new file mode 100644
index 0000000000..0e75309d7a
--- /dev/null
+++ b/thirdparty/libwebsockets/roles/http/server/access-log.c
@@ -0,0 +1,182 @@
+/*
+ * libwebsockets - server access log handling
+ *
+ * Copyright (C) 2010-2017 Andy Green <andy@warmcat.com>
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation:
+ *  version 2.1 of the License.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ *  MA  02110-1301  USA
+ */
+
+#include "core/private.h"
+
+/*
+ * Produce Apache-compatible log string for wsi, like this:
+ *
+ * 2.31.234.19 - - [27/Mar/2016:03:22:44 +0800]
+ * "GET /aep-screen.png HTTP/1.1"
+ * 200 152987 "https://libwebsockets.org/index.html"
+ * "Mozilla/5.0 (Macint... Chrome/49.0.2623.87 Safari/537.36"
+ *
+ */
+
+extern const char * const method_names[];
+
+static const char * const hver[] = {
+	"HTTP/1.0", "HTTP/1.1", "HTTP/2"
+};
+
+void
+lws_prepare_access_log_info(struct lws *wsi, char *uri_ptr, int meth)
+{
+#ifdef LWS_WITH_IPV6
+	char ads[INET6_ADDRSTRLEN];
+#else
+	char ads[INET_ADDRSTRLEN];
+#endif
+	char da[64];
+	const char *pa, *me;
+	struct tm *tmp;
+	time_t t = time(NULL);
+	int l = 256, m;
+
+	if (!wsi->vhost)
+		return;
+
+	/* only worry about preparing it if we store it */
+	if (wsi->vhost->log_fd == (int)LWS_INVALID_FILE)
+		return;
+
+	if (wsi->access_log_pending)
+		lws_access_log(wsi);
+
+	wsi->http.access_log.header_log = lws_malloc(l, "access log");
+	if (wsi->http.access_log.header_log) {
+
+		tmp = localtime(&t);
+		if (tmp)
+			strftime(da, sizeof(da), "%d/%b/%Y:%H:%M:%S %z", tmp);
+		else
+			strcpy(da, "01/Jan/1970:00:00:00 +0000");
+
+		pa = lws_get_peer_simple(wsi, ads, sizeof(ads));
+		if (!pa)
+			pa = "(unknown)";
+
+		if (wsi->http2_substream)
+			me = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_COLON_METHOD);
+		else
+			me = method_names[meth];
+		if (!me)
+			me = "(null)";
+
+		lws_snprintf(wsi->http.access_log.header_log, l,
+			 "%s - - [%s] \"%s %s %s\"",
+			 pa, da, me, uri_ptr,
+			 hver[wsi->http.request_version]);
+
+		l = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_USER_AGENT);
+		if (l) {
+			wsi->http.access_log.user_agent = lws_malloc(l + 2, "access log");
+			if (!wsi->http.access_log.user_agent) {
+				lwsl_err("OOM getting user agent\n");
+				lws_free_set_NULL(wsi->http.access_log.header_log);
+				return;
+			}
+
+			lws_hdr_copy(wsi, wsi->http.access_log.user_agent,
+					l + 1, WSI_TOKEN_HTTP_USER_AGENT);
+
+			for (m = 0; m < l; m++)
+				if (wsi->http.access_log.user_agent[m] == '\"')
+					wsi->http.access_log.user_agent[m] = '\'';
+		}
+		l = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_REFERER);
+		if (l) {
+			wsi->http.access_log.referrer = lws_malloc(l + 2, "referrer");
+			if (!wsi->http.access_log.referrer) {
+				lwsl_err("OOM getting user agent\n");
+				lws_free_set_NULL(wsi->http.access_log.user_agent);
+				lws_free_set_NULL(wsi->http.access_log.header_log);
+				return;
+			}
+			lws_hdr_copy(wsi, wsi->http.access_log.referrer,
+					l + 1, WSI_TOKEN_HTTP_REFERER);
+
+			for (m = 0; m < l; m++)
+				if (wsi->http.access_log.referrer[m] == '\"')
+					wsi->http.access_log.referrer[m] = '\'';
+		}
+		wsi->access_log_pending = 1;
+	}
+}
+
+
+int
+lws_access_log(struct lws *wsi)
+{
+	char *p = wsi->http.access_log.user_agent, ass[512],
+	     *p1 = wsi->http.access_log.referrer;
+	int l;
+
+	if (!wsi->vhost)
+		return 0;
+
+	if (wsi->vhost->log_fd == (int)LWS_INVALID_FILE)
+		return 0;
+
+	if (!wsi->access_log_pending)
+		return 0;
+
+	if (!wsi->http.access_log.header_log)
+		return 0;
+
+	if (!p)
+		p = "";
+
+	if (!p1)
+		p1 = "";
+
+	/*
+	 * We do this in two parts to restrict an oversize referrer such that
+	 * we will always have space left to append an empty useragent, while
+	 * maintaining the structure of the log text
+	 */
+	l = lws_snprintf(ass, sizeof(ass) - 7, "%s %d %lu \"%s",
+		     wsi->http.access_log.header_log,
+		     wsi->http.access_log.response, wsi->http.access_log.sent, p1);
+	if (strlen(p) > sizeof(ass) - 6 - l)
+		p[sizeof(ass) - 6 - l] = '\0';
+	l += lws_snprintf(ass + l, sizeof(ass) - 1 - l, "\" \"%s\"\n", p);
+
+	if (write(wsi->vhost->log_fd, ass, l) != l)
+		lwsl_err("Failed to write log\n");
+
+	if (wsi->http.access_log.header_log) {
+		lws_free(wsi->http.access_log.header_log);
+		wsi->http.access_log.header_log = NULL;
+	}
+	if (wsi->http.access_log.user_agent) {
+		lws_free(wsi->http.access_log.user_agent);
+		wsi->http.access_log.user_agent = NULL;
+	}
+	if (wsi->http.access_log.referrer) {
+		lws_free(wsi->http.access_log.referrer);
+		wsi->http.access_log.referrer = NULL;
+	}
+	wsi->access_log_pending = 0;
+
+	return 0;
+}
+