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3370 lines
109 KiB
C
3370 lines
109 KiB
C
/*
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* SSLsplit - transparent SSL/TLS interception
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* Copyright (c) 2009-2016, Daniel Roethlisberger <daniel@roe.ch>
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* All rights reserved.
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* http://www.roe.ch/SSLsplit
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "pxyconn.h"
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#include "pxysslshut.h"
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#include "cachemgr.h"
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#include "ssl.h"
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#include "opts.h"
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#include "sys.h"
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#include "util.h"
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#include "base64.h"
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#include "url.h"
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#include "log.h"
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#include "attrib.h"
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#include "proc.h"
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <event2/event.h>
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#include <event2/listener.h>
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#include <event2/bufferevent.h>
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#include <event2/bufferevent_ssl.h>
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#include <event2/buffer.h>
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#include <event2/thread.h>
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#include <event2/dns.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include <assert.h>
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|
|
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/*
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* Maximum size of data to buffer per connection direction before
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* temporarily stopping to read data from the other end.
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*/
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#define OUTBUF_LIMIT (128*1024)
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/*
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* Print helper for logging code.
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*/
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#define STRORDASH(x) (((x)&&*(x))?(x):"-")
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/*
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* Context used for all server sessions.
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*/
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#ifdef USE_SSL_SESSION_ID_CONTEXT
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static unsigned long ssl_session_context = 0x31415926;
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#endif /* USE_SSL_SESSION_ID_CONTEXT */
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|
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/*
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* Proxy connection context state, describes a proxy connection
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* with source and destination socket bufferevents, SSL context and
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* other session state. One of these exists per handled proxy
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* connection.
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*/
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#define WANT_CONNECT_LOG(ctx) ((ctx)->opts->connectlog||!(ctx)->opts->detach)
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#define WANT_CONTENT_LOG(ctx) ((ctx)->opts->contentlog&&!(ctx)->passthrough)
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static void
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pxy_conn_connect_e2(pxy_conn_ctx_t *ctx);
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static pxy_conn_ctx_t *
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pxy_conn_ctx_new(proxyspec_t *spec, opts_t *opts,
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pxy_thrmgr_ctx_t *thrmgr, evutil_socket_t fd)
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{
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log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>................... pxy_conn_ctx_new: ENTER fd=%d, sizeof(pxy_conn_ctx_t)=%d\n", fd, sizeof(pxy_conn_ctx_t));
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pxy_conn_ctx_t *ctx = malloc(sizeof(pxy_conn_ctx_t));
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if (!ctx)
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return NULL;
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memset(ctx, 0, sizeof(pxy_conn_ctx_t));
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ctx->spec = spec;
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ctx->opts = opts;
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ctx->clienthello_search = spec->upgrade;
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ctx->fd = fd;
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ctx->thridx = pxy_thrmgr_attach(thrmgr, &ctx->evbase, &ctx->dnsbase);
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ctx->thrmgr = thrmgr;
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#ifdef HAVE_LOCAL_PROCINFO
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ctx->lproc.pid = -1;
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#endif /* HAVE_LOCAL_PROCINFO */
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#ifdef DEBUG_PROXY
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if (OPTS_DEBUG(opts)) {
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log_dbg_printf("%p pxy_conn_ctx_new\n",
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(void*)ctx);
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}
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#endif /* DEBUG_PROXY */
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log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>................... pxy_conn_ctx_new: EXIT fd=%d\n", fd);
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return ctx;
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}
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static pxy_conn_ctx_t *
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pxy_conn_ctx_reinit(pxy_conn_ctx_t *ctx, proxyspec_t *spec, opts_t *opts,
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pxy_thrmgr_ctx_t *thrmgr, evutil_socket_t fd)
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{
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log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>................... pxy_conn_ctx_reinit: ENTER fd=%d\n", fd);
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if (!ctx)
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return NULL;
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ctx->spec = spec;
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ctx->opts = opts;
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ctx->clienthello_search = spec->upgrade;
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ctx->fd = fd;
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ctx->thridx = pxy_thrmgr_attach(thrmgr, &ctx->evbase, &ctx->dnsbase);
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ctx->thrmgr = thrmgr;
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#ifdef HAVE_LOCAL_PROCINFO
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ctx->lproc.pid = -1;
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#endif /* HAVE_LOCAL_PROCINFO */
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#ifdef DEBUG_PROXY
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if (OPTS_DEBUG(opts)) {
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log_dbg_printf("%p pxy_conn_ctx_new\n",
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(void*)ctx);
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}
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#endif /* DEBUG_PROXY */
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log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>................... pxy_conn_ctx_reinit: EXIT fd=%d\n", fd);
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return ctx;
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}
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static void NONNULL(1)
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pxy_conn_ctx_free(pxy_conn_ctx_t *ctx)
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{
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#ifdef DEBUG_PROXY
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if (OPTS_DEBUG(ctx->opts)) {
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log_dbg_printf("%p pxy_conn_ctx_free\n",
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(void*)ctx);
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}
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#endif /* DEBUG_PROXY */
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pxy_thrmgr_detach(ctx->thrmgr, ctx->thridx);
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if (ctx->srchost_str) {
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free(ctx->srchost_str);
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}
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if (ctx->srcport_str) {
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free(ctx->srcport_str);
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}
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if (ctx->dsthost_str) {
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free(ctx->dsthost_str);
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}
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if (ctx->dstport_str) {
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free(ctx->dstport_str);
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}
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if (ctx->http_method) {
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free(ctx->http_method);
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}
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if (ctx->http_uri) {
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free(ctx->http_uri);
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}
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if (ctx->http_host) {
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free(ctx->http_host);
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}
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if (ctx->http_content_type) {
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free(ctx->http_content_type);
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}
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if (ctx->http_status_code) {
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free(ctx->http_status_code);
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}
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if (ctx->http_status_text) {
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free(ctx->http_status_text);
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}
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if (ctx->http_content_length) {
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free(ctx->http_content_length);
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}
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if (ctx->ssl_names) {
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free(ctx->ssl_names);
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}
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if (ctx->origcrtfpr) {
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free(ctx->origcrtfpr);
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}
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if (ctx->usedcrtfpr) {
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free(ctx->usedcrtfpr);
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}
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#ifdef HAVE_LOCAL_PROCINFO
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if (ctx->lproc.exec_path) {
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free(ctx->lproc.exec_path);
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}
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if (ctx->lproc.user) {
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free(ctx->lproc.user);
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}
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if (ctx->lproc.group) {
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free(ctx->lproc.group);
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}
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#endif /* HAVE_LOCAL_PROCINFO */
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if (ctx->origcrt) {
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X509_free(ctx->origcrt);
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}
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if (ctx->ev) {
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event_free(ctx->ev);
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}
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if (ctx->sni) {
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free(ctx->sni);
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}
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if (WANT_CONTENT_LOG(ctx) && ctx->logctx) {
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if (log_content_close(&ctx->logctx) == -1) {
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log_err_printf("Warning: Content log close failed\n");
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}
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}
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free(ctx);
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}
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/* forward declaration of libevent callbacks */
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static void pxy_bev_readcb(struct bufferevent *, void *);
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static void pxy_bev_readcb_e2(struct bufferevent *, void *);
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static void pxy_bev_writecb(struct bufferevent *, void *);
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static void pxy_bev_writecb_e2(struct bufferevent *, void *);
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static void pxy_bev_eventcb(struct bufferevent *, short, void *);
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static void pxy_bev_eventcb_e2(struct bufferevent *, short, void *);
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static void pxy_fd_readcb(evutil_socket_t, short, void *);
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|
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/* forward declaration of OpenSSL callbacks */
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#ifndef OPENSSL_NO_TLSEXT
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static int pxy_ossl_servername_cb(SSL *ssl, int *al, void *arg);
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#endif /* !OPENSSL_NO_TLSEXT */
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static int pxy_ossl_sessnew_cb(SSL *, SSL_SESSION *);
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static void pxy_ossl_sessremove_cb(SSL_CTX *, SSL_SESSION *);
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static SSL_SESSION * pxy_ossl_sessget_cb(SSL *, unsigned char *, int, int *);
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|
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/*
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* Dump information on a certificate to the debug log.
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*/
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static void
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pxy_debug_crt(X509 *crt)
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{
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char *sj = ssl_x509_subject(crt);
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if (sj) {
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log_dbg_printf("Subject DN: %s\n", sj);
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free(sj);
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}
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char *names = ssl_x509_names_to_str(crt);
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if (names) {
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log_dbg_printf("Common Names: %s\n", names);
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free(names);
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}
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|
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char *fpr;
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if (!(fpr = ssl_x509_fingerprint(crt, 1))) {
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log_err_printf("Warning: Error generating X509 fingerprint\n");
|
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} else {
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log_dbg_printf("Fingerprint: %s\n", fpr);
|
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free(fpr);
|
|
}
|
|
|
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#ifdef DEBUG_CERTIFICATE
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/* dump certificate */
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log_dbg_print_free(ssl_x509_to_str(crt));
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log_dbg_print_free(ssl_x509_to_pem(crt));
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|
#endif /* DEBUG_CERTIFICATE */
|
|
}
|
|
|
|
static void
|
|
pxy_log_connect_nonhttp(pxy_conn_ctx_t *ctx)
|
|
{
|
|
char *msg;
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
char *lpi = NULL;
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
int rv;
|
|
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
if (ctx->opts->lprocinfo) {
|
|
rv = asprintf(&lpi, "lproc:%i:%s:%s:%s",
|
|
ctx->lproc.pid,
|
|
STRORDASH(ctx->lproc.user),
|
|
STRORDASH(ctx->lproc.group),
|
|
STRORDASH(ctx->lproc.exec_path));
|
|
if ((rv < 0) || !lpi) {
|
|
ctx->enomem = 1;
|
|
goto out;
|
|
}
|
|
} else {
|
|
lpi = "";
|
|
}
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
|
|
if (!ctx->src.ssl) {
|
|
rv = asprintf(&msg, "%s %s %s %s %s"
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
" %s"
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
"\n",
|
|
ctx->passthrough ? "passthrough" : "tcp",
|
|
STRORDASH(ctx->srchost_str),
|
|
STRORDASH(ctx->srcport_str),
|
|
STRORDASH(ctx->dsthost_str),
|
|
STRORDASH(ctx->dstport_str)
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
, lpi
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
);
|
|
} else {
|
|
rv = asprintf(&msg, "%s %s %s %s %s "
|
|
"sni:%s names:%s "
|
|
"sproto:%s:%s dproto:%s:%s "
|
|
"origcrt:%s usedcrt:%s"
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
" %s"
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
"\n",
|
|
ctx->clienthello_found ? "upgrade" : "ssl",
|
|
STRORDASH(ctx->srchost_str),
|
|
STRORDASH(ctx->srcport_str),
|
|
STRORDASH(ctx->dsthost_str),
|
|
STRORDASH(ctx->dstport_str),
|
|
STRORDASH(ctx->sni),
|
|
STRORDASH(ctx->ssl_names),
|
|
SSL_get_version(ctx->src.ssl),
|
|
SSL_get_cipher(ctx->src.ssl),
|
|
SSL_get_version(ctx->dst.ssl),
|
|
SSL_get_cipher(ctx->dst.ssl),
|
|
STRORDASH(ctx->origcrtfpr),
|
|
STRORDASH(ctx->usedcrtfpr)
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
, lpi
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
);
|
|
}
|
|
if ((rv < 0) || !msg) {
|
|
ctx->enomem = 1;
|
|
goto out;
|
|
}
|
|
if (!ctx->opts->detach) {
|
|
log_err_printf("%s", msg);
|
|
}
|
|
if (ctx->opts->connectlog) {
|
|
if (log_connect_print_free(msg) == -1) {
|
|
free(msg);
|
|
log_err_printf("Warning: Connection logging failed\n");
|
|
}
|
|
} else {
|
|
free(msg);
|
|
}
|
|
out:
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
if (lpi && ctx->opts->lprocinfo) {
|
|
free(lpi);
|
|
}
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
return;
|
|
}
|
|
|
|
static void
|
|
pxy_log_connect_http(pxy_conn_ctx_t *ctx)
|
|
{
|
|
char *msg;
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
char *lpi = NULL;
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
int rv;
|
|
|
|
#ifdef DEBUG_PROXY
|
|
if (ctx->passthrough) {
|
|
log_err_printf("Warning: pxy_log_connect_http called while in "
|
|
"passthrough mode\n");
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
if (ctx->opts->lprocinfo) {
|
|
rv = asprintf(&lpi, "lproc:%i:%s:%s:%s",
|
|
ctx->lproc.pid,
|
|
STRORDASH(ctx->lproc.user),
|
|
STRORDASH(ctx->lproc.group),
|
|
STRORDASH(ctx->lproc.exec_path));
|
|
if ((rv < 0) || !lpi) {
|
|
ctx->enomem = 1;
|
|
goto out;
|
|
}
|
|
}
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
|
|
if (!ctx->spec->ssl) {
|
|
rv = asprintf(&msg, "http %s %s %s %s %s %s %s %s %s"
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
" %s"
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
"%s\n",
|
|
STRORDASH(ctx->srchost_str),
|
|
STRORDASH(ctx->srcport_str),
|
|
STRORDASH(ctx->dsthost_str),
|
|
STRORDASH(ctx->dstport_str),
|
|
STRORDASH(ctx->http_host),
|
|
STRORDASH(ctx->http_method),
|
|
STRORDASH(ctx->http_uri),
|
|
STRORDASH(ctx->http_status_code),
|
|
STRORDASH(ctx->http_content_length),
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
lpi,
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
ctx->ocsp_denied ? " ocsp:denied" : "");
|
|
} else {
|
|
rv = asprintf(&msg, "https %s %s %s %s %s %s %s %s %s "
|
|
"sni:%s names:%s "
|
|
"sproto:%s:%s dproto:%s:%s "
|
|
"origcrt:%s usedcrt:%s"
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
" %s"
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
"%s\n",
|
|
STRORDASH(ctx->srchost_str),
|
|
STRORDASH(ctx->srcport_str),
|
|
STRORDASH(ctx->dsthost_str),
|
|
STRORDASH(ctx->dstport_str),
|
|
STRORDASH(ctx->http_host),
|
|
STRORDASH(ctx->http_method),
|
|
STRORDASH(ctx->http_uri),
|
|
STRORDASH(ctx->http_status_code),
|
|
STRORDASH(ctx->http_content_length),
|
|
STRORDASH(ctx->sni),
|
|
STRORDASH(ctx->ssl_names),
|
|
SSL_get_version(ctx->src.ssl),
|
|
SSL_get_cipher(ctx->src.ssl),
|
|
SSL_get_version(ctx->dst.ssl),
|
|
SSL_get_cipher(ctx->dst.ssl),
|
|
STRORDASH(ctx->origcrtfpr),
|
|
STRORDASH(ctx->usedcrtfpr),
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
lpi,
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
ctx->ocsp_denied ? " ocsp:denied" : "");
|
|
}
|
|
if ((rv < 0 ) || !msg) {
|
|
ctx->enomem = 1;
|
|
goto out;
|
|
}
|
|
if (!ctx->opts->detach) {
|
|
log_err_printf("%s", msg);
|
|
}
|
|
if (ctx->opts->connectlog) {
|
|
if (log_connect_print_free(msg) == -1) {
|
|
free(msg);
|
|
log_err_printf("Warning: Connection logging failed\n");
|
|
}
|
|
} else {
|
|
free(msg);
|
|
}
|
|
out:
|
|
#ifdef HAVE_LOCAL_PROCINFO
|
|
if (lpi) {
|
|
free(lpi);
|
|
}
|
|
#endif /* HAVE_LOCAL_PROCINFO */
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Called by OpenSSL when a new src SSL session is created.
|
|
* OpenSSL increments the refcount before calling the callback and will
|
|
* decrement it again if we return 0. Returning 1 will make OpenSSL skip
|
|
* the refcount decrementing. In other words, return 0 if we did not
|
|
* keep a pointer to the object (which we never do here).
|
|
*/
|
|
#ifdef HAVE_SSLV2
|
|
#define MAYBE_UNUSED
|
|
#else /* !HAVE_SSLV2 */
|
|
#define MAYBE_UNUSED UNUSED
|
|
#endif /* !HAVE_SSLV2 */
|
|
static int
|
|
pxy_ossl_sessnew_cb(MAYBE_UNUSED SSL *ssl, SSL_SESSION *sess)
|
|
#undef MAYBE_UNUSED
|
|
{
|
|
#ifdef DEBUG_SESSION_CACHE
|
|
log_dbg_printf("===> OpenSSL new session callback:\n");
|
|
if (sess) {
|
|
log_dbg_print_free(ssl_session_to_str(sess));
|
|
} else {
|
|
log_dbg_printf("(null)\n");
|
|
}
|
|
#endif /* DEBUG_SESSION_CACHE */
|
|
#ifdef HAVE_SSLV2
|
|
/* Session resumption seems to fail for SSLv2 with protocol
|
|
* parsing errors, so we disable caching for SSLv2. */
|
|
if (SSL_version(ssl) == SSL2_VERSION) {
|
|
log_err_printf("Warning: Session resumption denied to SSLv2"
|
|
"client.\n");
|
|
return 0;
|
|
}
|
|
#endif /* HAVE_SSLV2 */
|
|
if (sess) {
|
|
cachemgr_ssess_set(sess);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Called by OpenSSL when a src SSL session should be removed.
|
|
* OpenSSL calls SSL_SESSION_free() after calling the callback;
|
|
* we do not need to free the reference here.
|
|
*/
|
|
static void
|
|
pxy_ossl_sessremove_cb(UNUSED SSL_CTX *sslctx, SSL_SESSION *sess)
|
|
{
|
|
#ifdef DEBUG_SESSION_CACHE
|
|
log_dbg_printf("===> OpenSSL remove session callback:\n");
|
|
if (sess) {
|
|
log_dbg_print_free(ssl_session_to_str(sess));
|
|
} else {
|
|
log_dbg_printf("(null)\n");
|
|
}
|
|
#endif /* DEBUG_SESSION_CACHE */
|
|
if (sess) {
|
|
cachemgr_ssess_del(sess);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called by OpenSSL when a src SSL session is requested by the client.
|
|
*/
|
|
static SSL_SESSION *
|
|
pxy_ossl_sessget_cb(UNUSED SSL *ssl, unsigned char *id, int idlen, int *copy)
|
|
{
|
|
SSL_SESSION *sess;
|
|
|
|
#ifdef DEBUG_SESSION_CACHE
|
|
log_dbg_printf("===> OpenSSL get session callback:\n");
|
|
#endif /* DEBUG_SESSION_CACHE */
|
|
|
|
*copy = 0; /* SSL should not increment reference count of session */
|
|
sess = cachemgr_ssess_get(id, idlen);
|
|
|
|
#ifdef DEBUG_SESSION_CACHE
|
|
if (sess) {
|
|
log_dbg_print_free(ssl_session_to_str(sess));
|
|
}
|
|
#endif /* DEBUG_SESSION_CACHE */
|
|
|
|
log_dbg_printf("SSL session cache: %s\n", sess ? "HIT" : "MISS");
|
|
return sess;
|
|
}
|
|
|
|
/*
|
|
* Set SSL_CTX options that are the same for incoming and outgoing SSL_CTX.
|
|
*/
|
|
static void
|
|
pxy_sslctx_setoptions(SSL_CTX *sslctx, pxy_conn_ctx_t *ctx)
|
|
{
|
|
SSL_CTX_set_options(sslctx, SSL_OP_ALL);
|
|
#ifdef SSL_OP_TLS_ROLLBACK_BUG
|
|
SSL_CTX_set_options(sslctx, SSL_OP_TLS_ROLLBACK_BUG);
|
|
#endif /* SSL_OP_TLS_ROLLBACK_BUG */
|
|
#ifdef SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
|
|
SSL_CTX_set_options(sslctx, SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION);
|
|
#endif /* SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION */
|
|
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
|
|
SSL_CTX_set_options(sslctx, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
|
|
#endif /* SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS */
|
|
#ifdef SSL_OP_NO_TICKET
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_TICKET);
|
|
#endif /* SSL_OP_NO_TICKET */
|
|
|
|
/*
|
|
* Do not use HAVE_SSLV2 because we need to set SSL_OP_NO_SSLv2 if it
|
|
* is available and WITH_SSLV2 was not used.
|
|
*/
|
|
#ifdef SSL_OP_NO_SSLv2
|
|
#ifdef WITH_SSLV2
|
|
if (ctx->opts->no_ssl2) {
|
|
#endif /* WITH_SSLV2 */
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_SSLv2);
|
|
#ifdef WITH_SSLV2
|
|
}
|
|
#endif /* WITH_SSLV2 */
|
|
#endif /* !SSL_OP_NO_SSLv2 */
|
|
#ifdef HAVE_SSLV3
|
|
if (ctx->opts->no_ssl3) {
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_SSLv3);
|
|
}
|
|
#endif /* HAVE_SSLV3 */
|
|
#ifdef HAVE_TLSV10
|
|
if (ctx->opts->no_tls10) {
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_TLSv1);
|
|
}
|
|
#endif /* HAVE_TLSV10 */
|
|
#ifdef HAVE_TLSV11
|
|
if (ctx->opts->no_tls11) {
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_TLSv1_1);
|
|
}
|
|
#endif /* HAVE_TLSV11 */
|
|
#ifdef HAVE_TLSV12
|
|
if (ctx->opts->no_tls12) {
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_TLSv1_2);
|
|
}
|
|
#endif /* HAVE_TLSV12 */
|
|
|
|
#ifdef SSL_OP_NO_COMPRESSION
|
|
if (!ctx->opts->sslcomp) {
|
|
SSL_CTX_set_options(sslctx, SSL_OP_NO_COMPRESSION);
|
|
}
|
|
#endif /* SSL_OP_NO_COMPRESSION */
|
|
|
|
SSL_CTX_set_cipher_list(sslctx, ctx->opts->ciphers);
|
|
}
|
|
|
|
/*
|
|
* Create and set up a new SSL_CTX instance for terminating SSL.
|
|
* Set up all the necessary callbacks, the certificate, the cert chain and key.
|
|
*/
|
|
static SSL_CTX *
|
|
pxy_srcsslctx_create(pxy_conn_ctx_t *ctx, X509 *crt, STACK_OF(X509) *chain,
|
|
EVP_PKEY *key)
|
|
{
|
|
SSL_CTX *sslctx = SSL_CTX_new(ctx->opts->sslmethod());
|
|
if (!sslctx)
|
|
return NULL;
|
|
|
|
pxy_sslctx_setoptions(sslctx, ctx);
|
|
|
|
SSL_CTX_sess_set_new_cb(sslctx, pxy_ossl_sessnew_cb);
|
|
SSL_CTX_sess_set_remove_cb(sslctx, pxy_ossl_sessremove_cb);
|
|
SSL_CTX_sess_set_get_cb(sslctx, pxy_ossl_sessget_cb);
|
|
SSL_CTX_set_session_cache_mode(sslctx, SSL_SESS_CACHE_SERVER |
|
|
SSL_SESS_CACHE_NO_INTERNAL);
|
|
#ifdef USE_SSL_SESSION_ID_CONTEXT
|
|
SSL_CTX_set_session_id_context(sslctx, (void *)(&ssl_session_context),
|
|
sizeof(ssl_session_context));
|
|
#endif /* USE_SSL_SESSION_ID_CONTEXT */
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
SSL_CTX_set_tlsext_servername_callback(sslctx, pxy_ossl_servername_cb);
|
|
SSL_CTX_set_tlsext_servername_arg(sslctx, ctx);
|
|
#endif /* !OPENSSL_NO_TLSEXT */
|
|
#ifndef OPENSSL_NO_DH
|
|
if (ctx->opts->dh) {
|
|
SSL_CTX_set_tmp_dh(sslctx, ctx->opts->dh);
|
|
} else {
|
|
SSL_CTX_set_tmp_dh_callback(sslctx, ssl_tmp_dh_callback);
|
|
}
|
|
#endif /* !OPENSSL_NO_DH */
|
|
#ifndef OPENSSL_NO_ECDH
|
|
if (ctx->opts->ecdhcurve) {
|
|
EC_KEY *ecdh = ssl_ec_by_name(ctx->opts->ecdhcurve);
|
|
SSL_CTX_set_tmp_ecdh(sslctx, ecdh);
|
|
EC_KEY_free(ecdh);
|
|
} else {
|
|
EC_KEY *ecdh = ssl_ec_by_name(NULL);
|
|
SSL_CTX_set_tmp_ecdh(sslctx, ecdh);
|
|
EC_KEY_free(ecdh);
|
|
}
|
|
#endif /* !OPENSSL_NO_ECDH */
|
|
SSL_CTX_use_certificate(sslctx, crt);
|
|
SSL_CTX_use_PrivateKey(sslctx, key);
|
|
for (int i = 0; i < sk_X509_num(chain); i++) {
|
|
X509 *c = sk_X509_value(chain, i);
|
|
ssl_x509_refcount_inc(c); /* next call consumes a reference */
|
|
SSL_CTX_add_extra_chain_cert(sslctx, c);
|
|
}
|
|
|
|
#ifdef DEBUG_SESSION_CACHE
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
int mode = SSL_CTX_get_session_cache_mode(sslctx);
|
|
log_dbg_printf("SSL session cache mode: %08x\n", mode);
|
|
if (mode == SSL_SESS_CACHE_OFF)
|
|
log_dbg_printf("SSL_SESS_CACHE_OFF\n");
|
|
if (mode & SSL_SESS_CACHE_CLIENT)
|
|
log_dbg_printf("SSL_SESS_CACHE_CLIENT\n");
|
|
if (mode & SSL_SESS_CACHE_SERVER)
|
|
log_dbg_printf("SSL_SESS_CACHE_SERVER\n");
|
|
if (mode & SSL_SESS_CACHE_NO_AUTO_CLEAR)
|
|
log_dbg_printf("SSL_SESS_CACHE_NO_AUTO_CLEAR\n");
|
|
if (mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)
|
|
log_dbg_printf("SSL_SESS_CACHE_NO_INTERNAL_LOOKUP\n");
|
|
if (mode & SSL_SESS_CACHE_NO_INTERNAL_STORE)
|
|
log_dbg_printf("SSL_SESS_CACHE_NO_INTERNAL_STORE\n");
|
|
}
|
|
#endif /* DEBUG_SESSION_CACHE */
|
|
|
|
return sslctx;
|
|
}
|
|
|
|
static int
|
|
pxy_srccert_write_to_gendir(pxy_conn_ctx_t *ctx, X509 *crt, int is_orig)
|
|
{
|
|
char *fn;
|
|
int rv;
|
|
|
|
if (!ctx->origcrtfpr)
|
|
return -1;
|
|
if (is_orig) {
|
|
rv = asprintf(&fn, "%s/%s.crt", ctx->opts->certgendir,
|
|
ctx->origcrtfpr);
|
|
} else {
|
|
if (!ctx->usedcrtfpr)
|
|
return -1;
|
|
rv = asprintf(&fn, "%s/%s-%s.crt", ctx->opts->certgendir,
|
|
ctx->origcrtfpr, ctx->usedcrtfpr);
|
|
}
|
|
if (rv == -1) {
|
|
ctx->enomem = 1;
|
|
return -1;
|
|
}
|
|
rv = log_cert_submit(fn, crt);
|
|
free(fn);
|
|
return rv;
|
|
}
|
|
|
|
static void
|
|
pxy_srccert_write(pxy_conn_ctx_t *ctx)
|
|
{
|
|
if (ctx->opts->certgen_writeall || ctx->generated_cert) {
|
|
if (pxy_srccert_write_to_gendir(ctx,
|
|
SSL_get_certificate(ctx->src.ssl), 0) == -1) {
|
|
log_err_printf("Failed to write used certificate\n");
|
|
}
|
|
}
|
|
if (ctx->opts->certgen_writeall) {
|
|
if (pxy_srccert_write_to_gendir(ctx, ctx->origcrt, 1) == -1) {
|
|
log_err_printf("Failed to write orig certificate\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static cert_t *
|
|
pxy_srccert_create(pxy_conn_ctx_t *ctx)
|
|
{
|
|
cert_t *cert = NULL;
|
|
|
|
if (ctx->opts->tgcrtdir) {
|
|
if (ctx->sni) {
|
|
cert = cachemgr_tgcrt_get(ctx->sni);
|
|
if (!cert) {
|
|
char *wildcarded;
|
|
wildcarded = ssl_wildcardify(ctx->sni);
|
|
if (!wildcarded) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
cert = cachemgr_tgcrt_get(wildcarded);
|
|
free(wildcarded);
|
|
}
|
|
if (cert && OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Target cert by SNI\n");
|
|
}
|
|
} else if (ctx->origcrt) {
|
|
char **names = ssl_x509_names(ctx->origcrt);
|
|
for (char **p = names; *p; p++) {
|
|
if (!cert) {
|
|
cert = cachemgr_tgcrt_get(*p);
|
|
}
|
|
if (!cert) {
|
|
char *wildcarded;
|
|
wildcarded = ssl_wildcardify(*p);
|
|
if (!wildcarded) {
|
|
ctx->enomem = 1;
|
|
} else {
|
|
cert = cachemgr_tgcrt_get(
|
|
wildcarded);
|
|
free(wildcarded);
|
|
}
|
|
}
|
|
free(*p);
|
|
}
|
|
free(names);
|
|
if (ctx->enomem) {
|
|
return NULL;
|
|
}
|
|
if (cert && OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Target cert by origcrt\n");
|
|
}
|
|
}
|
|
|
|
if (cert) {
|
|
ctx->immutable_cert = 1;
|
|
}
|
|
}
|
|
|
|
if (!cert && ctx->origcrt && ctx->opts->key) {
|
|
cert = cert_new();
|
|
|
|
cert->crt = cachemgr_fkcrt_get(ctx->origcrt);
|
|
if (cert->crt) {
|
|
if (OPTS_DEBUG(ctx->opts))
|
|
log_dbg_printf("Certificate cache: HIT\n");
|
|
} else {
|
|
if (OPTS_DEBUG(ctx->opts))
|
|
log_dbg_printf("Certificate cache: MISS\n");
|
|
cert->crt = ssl_x509_forge(ctx->opts->cacrt,
|
|
ctx->opts->cakey,
|
|
ctx->origcrt, NULL,
|
|
ctx->opts->key);
|
|
cachemgr_fkcrt_set(ctx->origcrt, cert->crt);
|
|
}
|
|
cert_set_key(cert, ctx->opts->key);
|
|
cert_set_chain(cert, ctx->opts->chain);
|
|
ctx->generated_cert = 1;
|
|
}
|
|
|
|
if ((WANT_CONNECT_LOG(ctx) || ctx->opts->certgendir) && ctx->origcrt) {
|
|
ctx->origcrtfpr = ssl_x509_fingerprint(ctx->origcrt, 0);
|
|
if (!ctx->origcrtfpr)
|
|
ctx->enomem = 1;
|
|
}
|
|
if ((WANT_CONNECT_LOG(ctx) || ctx->opts->certgen_writeall) &&
|
|
cert && cert->crt) {
|
|
ctx->usedcrtfpr = ssl_x509_fingerprint(cert->crt, 0);
|
|
if (!ctx->usedcrtfpr)
|
|
ctx->enomem = 1;
|
|
}
|
|
|
|
return cert;
|
|
}
|
|
|
|
/*
|
|
* Create new SSL context for the incoming connection, based on the original
|
|
* destination SSL certificate.
|
|
* Returns NULL if no suitable certificate could be found.
|
|
*/
|
|
static SSL *
|
|
pxy_srcssl_create(pxy_conn_ctx_t *ctx, SSL *origssl)
|
|
{
|
|
cert_t *cert;
|
|
|
|
cachemgr_dsess_set((struct sockaddr*)&ctx->addr,
|
|
ctx->addrlen, ctx->sni,
|
|
SSL_get0_session(origssl));
|
|
|
|
ctx->origcrt = SSL_get_peer_certificate(origssl);
|
|
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
if (ctx->origcrt) {
|
|
log_dbg_printf("===> Original server certificate:\n");
|
|
pxy_debug_crt(ctx->origcrt);
|
|
} else {
|
|
log_dbg_printf("===> Original server has no cert!\n");
|
|
}
|
|
}
|
|
|
|
cert = pxy_srccert_create(ctx);
|
|
if (!cert)
|
|
return NULL;
|
|
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("===> Forged server certificate:\n");
|
|
pxy_debug_crt(cert->crt);
|
|
}
|
|
|
|
if (WANT_CONNECT_LOG(ctx)) {
|
|
ctx->ssl_names = ssl_x509_names_to_str(ctx->origcrt ?
|
|
ctx->origcrt :
|
|
cert->crt);
|
|
if (!ctx->ssl_names)
|
|
ctx->enomem = 1;
|
|
}
|
|
|
|
SSL_CTX *sslctx = pxy_srcsslctx_create(ctx, cert->crt, cert->chain,
|
|
cert->key);
|
|
cert_free(cert);
|
|
if (!sslctx) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
SSL *ssl = SSL_new(sslctx);
|
|
SSL_CTX_free(sslctx); /* SSL_new() increments refcount */
|
|
if (!ssl) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
#ifdef SSL_MODE_RELEASE_BUFFERS
|
|
/* lower memory footprint for idle connections */
|
|
SSL_set_mode(ssl, SSL_get_mode(ssl) | SSL_MODE_RELEASE_BUFFERS);
|
|
#endif /* SSL_MODE_RELEASE_BUFFERS */
|
|
return ssl;
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
/*
|
|
* OpenSSL servername callback, called when OpenSSL receives a servername
|
|
* TLS extension in the clientHello. Must switch to a new SSL_CTX with
|
|
* a different certificate if we want to replace the server cert here.
|
|
* We generate a new certificate if the current one does not match the
|
|
* supplied servername. This should only happen if the original destination
|
|
* server supplies a certificate which does not match the server name we
|
|
* indicate to it.
|
|
*/
|
|
static int
|
|
pxy_ossl_servername_cb(SSL *ssl, UNUSED int *al, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
const char *sn;
|
|
X509 *sslcrt;
|
|
|
|
if (!(sn = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name)))
|
|
return SSL_TLSEXT_ERR_NOACK;
|
|
|
|
if (!ctx->sni) {
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Warning: SNI parser yielded no "
|
|
"hostname, copying OpenSSL one: "
|
|
"[NULL] != [%s]\n", sn);
|
|
}
|
|
ctx->sni = strdup(sn);
|
|
if (!ctx->sni) {
|
|
ctx->enomem = 1;
|
|
return SSL_TLSEXT_ERR_NOACK;
|
|
}
|
|
}
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
if (!!strcmp(sn, ctx->sni)) {
|
|
/*
|
|
* This may happen if the client resumes a session, but
|
|
* uses a different SNI hostname when resuming than it
|
|
* used when the session was created. OpenSSL
|
|
* correctly ignores the SNI in the ClientHello in this
|
|
* case, but since we have already sent the SNI onwards
|
|
* to the original destination, there is no way back.
|
|
* We log an error and hope this never happens.
|
|
*/
|
|
log_dbg_printf("Warning: SNI parser yielded different "
|
|
"hostname than OpenSSL callback for "
|
|
"the same ClientHello message: "
|
|
"[%s] != [%s]\n", ctx->sni, sn);
|
|
}
|
|
}
|
|
|
|
/* generate a new certificate with sn as additional altSubjectName
|
|
* and replace it both in the current SSL ctx and in the cert cache */
|
|
if (!ctx->immutable_cert &&
|
|
!ssl_x509_names_match((sslcrt = SSL_get_certificate(ssl)), sn)) {
|
|
X509 *newcrt;
|
|
SSL_CTX *newsslctx;
|
|
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Certificate cache: UPDATE "
|
|
"(SNI mismatch)\n");
|
|
}
|
|
newcrt = ssl_x509_forge(ctx->opts->cacrt, ctx->opts->cakey,
|
|
sslcrt, sn, ctx->opts->key);
|
|
if (!newcrt) {
|
|
ctx->enomem = 1;
|
|
return SSL_TLSEXT_ERR_NOACK;
|
|
}
|
|
cachemgr_fkcrt_set(ctx->origcrt, newcrt);
|
|
ctx->generated_cert = 1;
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("===> Updated forged server "
|
|
"certificate:\n");
|
|
pxy_debug_crt(newcrt);
|
|
}
|
|
if (WANT_CONNECT_LOG(ctx)) {
|
|
if (ctx->ssl_names) {
|
|
free(ctx->ssl_names);
|
|
}
|
|
ctx->ssl_names = ssl_x509_names_to_str(newcrt);
|
|
if (!ctx->ssl_names) {
|
|
ctx->enomem = 1;
|
|
}
|
|
}
|
|
if (WANT_CONNECT_LOG(ctx) || ctx->opts->certgendir) {
|
|
if (ctx->usedcrtfpr) {
|
|
free(ctx->usedcrtfpr);
|
|
}
|
|
ctx->usedcrtfpr = ssl_x509_fingerprint(newcrt, 0);
|
|
if (!ctx->usedcrtfpr) {
|
|
ctx->enomem = 1;
|
|
}
|
|
}
|
|
|
|
newsslctx = pxy_srcsslctx_create(ctx, newcrt, ctx->opts->chain,
|
|
ctx->opts->key);
|
|
if (!newsslctx) {
|
|
X509_free(newcrt);
|
|
ctx->enomem = 1;
|
|
return SSL_TLSEXT_ERR_NOACK;
|
|
}
|
|
SSL_set_SSL_CTX(ssl, newsslctx); /* decr's old incr new refc */
|
|
SSL_CTX_free(newsslctx);
|
|
X509_free(newcrt);
|
|
} else if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Certificate cache: KEEP (SNI match or "
|
|
"target mode)\n");
|
|
}
|
|
|
|
return SSL_TLSEXT_ERR_OK;
|
|
}
|
|
#endif /* !OPENSSL_NO_TLSEXT */
|
|
|
|
/*
|
|
* Create new SSL context for outgoing connections to the original destination.
|
|
* If hostname sni is provided, use it for Server Name Indication.
|
|
*/
|
|
static SSL *
|
|
pxy_dstssl_create(pxy_conn_ctx_t *ctx)
|
|
{
|
|
SSL_CTX *sslctx;
|
|
SSL *ssl;
|
|
SSL_SESSION *sess;
|
|
|
|
sslctx = SSL_CTX_new(ctx->opts->sslmethod());
|
|
if (!sslctx) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
|
|
pxy_sslctx_setoptions(sslctx, ctx);
|
|
|
|
SSL_CTX_set_verify(sslctx, SSL_VERIFY_NONE, NULL);
|
|
|
|
ssl = SSL_new(sslctx);
|
|
SSL_CTX_free(sslctx); /* SSL_new() increments refcount */
|
|
if (!ssl) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
if (ctx->sni) {
|
|
SSL_set_tlsext_host_name(ssl, ctx->sni);
|
|
}
|
|
#endif /* !OPENSSL_NO_TLSEXT */
|
|
|
|
#ifdef SSL_MODE_RELEASE_BUFFERS
|
|
/* lower memory footprint for idle connections */
|
|
SSL_set_mode(ssl, SSL_get_mode(ssl) | SSL_MODE_RELEASE_BUFFERS);
|
|
#endif /* SSL_MODE_RELEASE_BUFFERS */
|
|
|
|
/* session resuming based on remote endpoint address and port */
|
|
sess = cachemgr_dsess_get((struct sockaddr *)&ctx->addr,
|
|
ctx->addrlen, ctx->sni); /* new sess inst */
|
|
if (sess) {
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Attempt reuse dst SSL session\n");
|
|
}
|
|
SSL_set_session(ssl, sess); /* increments sess refcount */
|
|
SSL_SESSION_free(sess);
|
|
}
|
|
|
|
return ssl;
|
|
}
|
|
|
|
/*
|
|
* Free bufferenvent and close underlying socket properly.
|
|
* For OpenSSL bufferevents, this will shutdown the SSL connection.
|
|
*/
|
|
static void
|
|
bufferevent_free_and_close_fd(struct bufferevent *bev, pxy_conn_ctx_t *ctx)
|
|
{
|
|
evutil_socket_t fd = bufferevent_getfd(bev);
|
|
SSL *ssl = NULL;
|
|
|
|
if (ctx->spec->ssl && !ctx->passthrough) {
|
|
ssl = bufferevent_openssl_get_ssl(bev); /* does not inc refc */
|
|
}
|
|
|
|
#ifdef DEBUG_PROXY
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf(" %p free_and_close_fd\n",
|
|
(void*)bev);
|
|
}
|
|
#endif /* DEBUG_PROXY */
|
|
|
|
bufferevent_free(bev); /* does not free SSL unless the option
|
|
BEV_OPT_CLOSE_ON_FREE was set */
|
|
if (ssl) {
|
|
pxy_ssl_shutdown(ctx->opts, ctx->evbase, ssl, fd);
|
|
} else {
|
|
// evutil_closesocket(fd);
|
|
if (evutil_closesocket(fd) == -1) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">############################# bufferevent_free_and_close_fd: evutil_closesocket FAILED, fd=%d\n", fd);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# bufferevent_free_and_close_fd: evutil_closesocket SUCCESS, fd=%d\n", fd);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set up a bufferevent structure for either a dst or src connection,
|
|
* optionally with or without SSL. Sets all callbacks, enables read
|
|
* and write events, but does not call bufferevent_socket_connect().
|
|
*
|
|
* For dst connections, pass -1 as fd. Pass a pointer to an initialized
|
|
* SSL struct as ssl if the connection should use SSL.
|
|
*
|
|
* Returns pointer to initialized bufferevent structure, as returned
|
|
* by bufferevent_socket_new() or bufferevent_openssl_socket_new().
|
|
*/
|
|
static struct bufferevent *
|
|
pxy_bufferevent_setup(pxy_conn_ctx_t *ctx, evutil_socket_t fd, SSL *ssl)
|
|
{
|
|
struct bufferevent *bev;
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_bufferevent_setup(): ENTER fd=%d\n", (int)fd);
|
|
|
|
if (ssl) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_bufferevent_setup(): bufferevent_openssl_socket_new <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
bev = bufferevent_openssl_socket_new(ctx->evbase, fd, ssl,
|
|
((fd == -1) ? BUFFEREVENT_SSL_CONNECTING : BUFFEREVENT_SSL_ACCEPTING),
|
|
BEV_OPT_DEFER_CALLBACKS);
|
|
} else {
|
|
bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS);
|
|
// bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS|BEV_OPT_THREADSAFE);
|
|
}
|
|
if (!bev) {
|
|
log_err_printf("Error creating bufferevent socket\n");
|
|
return NULL;
|
|
}
|
|
#if LIBEVENT_VERSION_NUMBER >= 0x02010000
|
|
if (ssl) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_bufferevent_setup(): bufferevent_openssl_set_allow_dirty_shutdown <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
/* Prevent unclean (dirty) shutdowns to cause error
|
|
* events on the SSL socket bufferevent. */
|
|
bufferevent_openssl_set_allow_dirty_shutdown(bev, 1);
|
|
}
|
|
#endif /* LIBEVENT_VERSION_NUMBER >= 0x02010000 */
|
|
bufferevent_setcb(bev, pxy_bev_readcb, pxy_bev_writecb,
|
|
pxy_bev_eventcb, ctx);
|
|
// bufferevent_enable(bev, EV_READ|EV_WRITE);
|
|
#ifdef DEBUG_PROXY
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf(" %p pxy_bufferevent_setup\n",
|
|
(void*)bev);
|
|
}
|
|
#endif /* DEBUG_PROXY */
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>> pxy_bufferevent_setup(): EXIT fd=%d, bev fd=%d\n", (int)fd, bufferevent_getfd(bev));
|
|
return bev;
|
|
}
|
|
|
|
static struct bufferevent *
|
|
pxy_bufferevent_setup_e2(pxy_conn_ctx_t *ctx, evutil_socket_t fd, SSL *ssl)
|
|
{
|
|
struct bufferevent *bev;
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_bufferevent_setup_e2(): ENTER %d\n", (int)fd);
|
|
|
|
// bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS);
|
|
//// bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS|BEV_OPT_THREADSAFE);
|
|
|
|
if (ssl) {
|
|
bev = bufferevent_openssl_socket_new(ctx->evbase, fd, ssl,
|
|
((fd == -1) ? BUFFEREVENT_SSL_CONNECTING : BUFFEREVENT_SSL_ACCEPTING), BEV_OPT_DEFER_CALLBACKS);
|
|
} else {
|
|
bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS);
|
|
// bev = bufferevent_socket_new(ctx->evbase, fd, BEV_OPT_DEFER_CALLBACKS|BEV_OPT_THREADSAFE);
|
|
}
|
|
if (!bev) {
|
|
log_err_printf("Error creating bufferevent socket\n");
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef DEBUG_PROXY
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf(" %p pxy_bufferevent_setup_e2\n",
|
|
(void*)bev);
|
|
}
|
|
#endif /* DEBUG_PROXY */
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>> pxy_bufferevent_setup_e2(): EXIT %d\n", (int)fd);
|
|
return bev;
|
|
}
|
|
|
|
/*
|
|
* Filter a single line of HTTP request headers.
|
|
* Also fills in some context fields for logging.
|
|
*
|
|
* Returns NULL if the current line should be deleted from the request.
|
|
* Returns a newly allocated string if the current line should be replaced.
|
|
* Returns `line' if the line should be kept.
|
|
*/
|
|
static char *
|
|
pxy_http_reqhdr_filter_line(const char *line, pxy_conn_ctx_t *ctx)
|
|
{
|
|
/* parse information for connect log */
|
|
if (!ctx->http_method) {
|
|
/* first line */
|
|
char *space1, *space2;
|
|
|
|
space1 = strchr(line, ' ');
|
|
space2 = space1 ? strchr(space1 + 1, ' ') : NULL;
|
|
if (!space1) {
|
|
/* not HTTP */
|
|
ctx->seen_req_header = 1;
|
|
} else {
|
|
ctx->http_method = malloc(space1 - line + 1);
|
|
if (ctx->http_method) {
|
|
memcpy(ctx->http_method, line, space1 - line);
|
|
ctx->http_method[space1 - line] = '\0';
|
|
} else {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
space1++;
|
|
if (!space2) {
|
|
/* HTTP/0.9 */
|
|
ctx->seen_req_header = 1;
|
|
space2 = space1 + strlen(space1);
|
|
}
|
|
ctx->http_uri = malloc(space2 - space1 + 1);
|
|
if (ctx->http_uri) {
|
|
memcpy(ctx->http_uri, space1, space2 - space1);
|
|
ctx->http_uri[space2 - space1] = '\0';
|
|
} else {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
}
|
|
} else {
|
|
/* not first line */
|
|
char *newhdr;
|
|
|
|
if (!ctx->http_host && !strncasecmp(line, "Host:", 5)) {
|
|
ctx->http_host = strdup(util_skipws(line + 5));
|
|
if (!ctx->http_host) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
} else if (!strncasecmp(line, "Content-Type:", 13)) {
|
|
ctx->http_content_type = strdup(util_skipws(line + 13));
|
|
if (!ctx->http_content_type) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
} else if (!strncasecmp(line, "Connection:", 11)) {
|
|
ctx->sent_http_conn_close = 1;
|
|
if (!(newhdr = strdup("Connection: close"))) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
return newhdr;
|
|
} else if (!strncasecmp(line, "Accept-Encoding:", 16) ||
|
|
!strncasecmp(line, "Keep-Alive:", 11)) {
|
|
return NULL;
|
|
} else if (line[0] == '\0') {
|
|
ctx->seen_req_header = 1;
|
|
if (!ctx->sent_http_conn_close) {
|
|
newhdr = strdup("Connection: close\r\n");
|
|
if (!newhdr) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
return newhdr;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (char*)line;
|
|
}
|
|
|
|
/*
|
|
* Filter a single line of HTTP response headers.
|
|
*
|
|
* Returns NULL if the current line should be deleted from the response.
|
|
* Returns a newly allocated string if the current line should be replaced.
|
|
* Returns `line' if the line should be kept.
|
|
*/
|
|
static char *
|
|
pxy_http_resphdr_filter_line(const char *line, pxy_conn_ctx_t *ctx)
|
|
{
|
|
/* parse information for connect log */
|
|
if (!ctx->http_status_code) {
|
|
/* first line */
|
|
char *space1, *space2;
|
|
|
|
space1 = strchr(line, ' ');
|
|
space2 = space1 ? strchr(space1 + 1, ' ') : NULL;
|
|
if (!space1 || !!strncmp(line, "HTTP", 4)) {
|
|
/* not HTTP or HTTP/0.9 */
|
|
ctx->seen_resp_header = 1;
|
|
} else {
|
|
size_t len_code, len_text;
|
|
|
|
if (space2) {
|
|
len_code = space2 - space1 - 1;
|
|
len_text = strlen(space2 + 1);
|
|
} else {
|
|
len_code = strlen(space1 + 1);
|
|
len_text = 0;
|
|
}
|
|
ctx->http_status_code = malloc(len_code + 1);
|
|
ctx->http_status_text = malloc(len_text + 1);
|
|
if (!ctx->http_status_code || !ctx->http_status_text) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
memcpy(ctx->http_status_code, space1 + 1, len_code);
|
|
ctx->http_status_code[len_code] = '\0';
|
|
if (space2) {
|
|
memcpy(ctx->http_status_text,
|
|
space2 + 1, len_text);
|
|
}
|
|
ctx->http_status_text[len_text] = '\0';
|
|
}
|
|
} else {
|
|
/* not first line */
|
|
if (!ctx->http_content_length &&
|
|
!strncasecmp(line, "Content-Length:", 15)) {
|
|
ctx->http_content_length =
|
|
strdup(util_skipws(line + 15));
|
|
if (!ctx->http_content_length) {
|
|
ctx->enomem = 1;
|
|
return NULL;
|
|
}
|
|
} else if (
|
|
/* HPKP: Public Key Pinning Extension for HTTP
|
|
* (draft-ietf-websec-key-pinning)
|
|
* remove to prevent public key pinning */
|
|
!strncasecmp(line, "Public-Key-Pins:", 16) ||
|
|
!strncasecmp(line, "Public-Key-Pins-Report-Only:", 28) ||
|
|
/* HSTS: HTTP Strict Transport Security (RFC 6797)
|
|
* remove to allow users to accept bad certs */
|
|
!strncasecmp(line, "Strict-Transport-Security:", 26) ||
|
|
/* Alternate Protocol
|
|
* remove to prevent switching to QUIC, SPDY et al */
|
|
!strncasecmp(line, "Alternate-Protocol:", 19)) {
|
|
return NULL;
|
|
} else if (line[0] == '\0') {
|
|
ctx->seen_resp_header = 1;
|
|
}
|
|
}
|
|
|
|
return (char*)line;
|
|
}
|
|
|
|
/*
|
|
* Return 1 if uri is an OCSP GET URI, 0 if not.
|
|
*/
|
|
static int
|
|
pxy_ocsp_is_valid_uri(const char *uri, pxy_conn_ctx_t *ctx)
|
|
{
|
|
char *buf_url;
|
|
size_t sz_url;
|
|
char *buf_b64;
|
|
size_t sz_b64;
|
|
unsigned char *buf_asn1;
|
|
size_t sz_asn1;
|
|
int ret;
|
|
|
|
buf_url = strrchr(uri, '/');
|
|
if (!buf_url)
|
|
return 0;
|
|
buf_url++;
|
|
|
|
/*
|
|
* Do some quick checks to avoid unnecessary buffer allocations and
|
|
* decoding URL, Base64 and ASN.1:
|
|
* - OCSP requests begin with a SEQUENCE (0x30), so the first Base64
|
|
* byte is 'M' or, unlikely but legal, the URL encoding thereof.
|
|
* - There should be no query string in OCSP GET requests.
|
|
* - Encoded OCSP request ASN.1 blobs are longer than 32 bytes.
|
|
*/
|
|
if (buf_url[0] != 'M' && buf_url[0] != '%')
|
|
return 0;
|
|
if (strchr(uri, '?'))
|
|
return 0;
|
|
sz_url = strlen(buf_url);
|
|
if (sz_url < 32)
|
|
return 0;
|
|
buf_b64 = url_dec(buf_url, sz_url, &sz_b64);
|
|
if (!buf_b64) {
|
|
ctx->enomem = 1;
|
|
return 0;
|
|
}
|
|
buf_asn1 = base64_dec(buf_b64, sz_b64, &sz_asn1);
|
|
if (!buf_asn1) {
|
|
ctx->enomem = 1;
|
|
free(buf_b64);
|
|
return 0;
|
|
}
|
|
ret = ssl_is_ocspreq(buf_asn1, sz_asn1);
|
|
free(buf_asn1);
|
|
free(buf_b64);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Called after a request header was completely read.
|
|
* If the request is an OCSP request, deny the request by sending an
|
|
* OCSP response of type tryLater and close the connection to the server.
|
|
*
|
|
* Reference:
|
|
* RFC 2560: X.509 Internet PKI Online Certificate Status Protocol (OCSP)
|
|
*/
|
|
static void
|
|
pxy_ocsp_deny(pxy_conn_ctx_t *ctx)
|
|
{
|
|
struct evbuffer *inbuf, *outbuf;
|
|
static const char ocspresp[] =
|
|
"HTTP/1.0 200 OK\r\n"
|
|
"Content-Type: application/ocsp-response\r\n"
|
|
"Content-Length: 5\r\n"
|
|
"Connection: close\r\n"
|
|
"\r\n"
|
|
"\x30\x03" /* OCSPResponse: SEQUENCE */
|
|
"\x0a\x01" /* OCSPResponseStatus: ENUMERATED */
|
|
"\x03"; /* tryLater (3) */
|
|
|
|
if (!ctx->http_method)
|
|
return;
|
|
if (!strncasecmp(ctx->http_method, "GET", 3) &&
|
|
pxy_ocsp_is_valid_uri(ctx->http_uri, ctx))
|
|
goto deny;
|
|
if (!strncasecmp(ctx->http_method, "POST", 4) &&
|
|
ctx->http_content_type &&
|
|
!strncasecmp(ctx->http_content_type,
|
|
"application/ocsp-request", 24))
|
|
goto deny;
|
|
return;
|
|
|
|
deny:
|
|
inbuf = bufferevent_get_input(ctx->src.bev);
|
|
outbuf = bufferevent_get_output(ctx->src.bev);
|
|
|
|
if (evbuffer_get_length(inbuf) > 0) {
|
|
if (WANT_CONTENT_LOG(ctx)) {
|
|
logbuf_t *lb;
|
|
lb = logbuf_new_alloc(evbuffer_get_length(inbuf),
|
|
NULL, NULL);
|
|
if (lb &&
|
|
(evbuffer_copyout(inbuf, lb->buf, lb->sz) != -1)) {
|
|
if (log_content_submit(ctx->logctx, lb,
|
|
1/*req*/) == -1) {
|
|
logbuf_free(lb);
|
|
log_err_printf("Warning: Content log "
|
|
"submission failed\n");
|
|
}
|
|
}
|
|
}
|
|
evbuffer_drain(inbuf, evbuffer_get_length(inbuf));
|
|
}
|
|
bufferevent_free_and_close_fd(ctx->dst.bev, ctx);
|
|
ctx->dst.bev = NULL;
|
|
ctx->dst.closed = 1;
|
|
evbuffer_add_printf(outbuf, ocspresp);
|
|
ctx->ocsp_denied = 1;
|
|
if (WANT_CONTENT_LOG(ctx)) {
|
|
logbuf_t *lb;
|
|
lb = logbuf_new_copy(ocspresp, sizeof(ocspresp) - 1,
|
|
NULL, NULL);
|
|
if (lb) {
|
|
if (log_content_submit(ctx->logctx, lb,
|
|
0/*resp*/) == -1) {
|
|
logbuf_free(lb);
|
|
log_err_printf("Warning: Content log "
|
|
"submission failed\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Peek into pending data to see if it is an SSL/TLS ClientHello, and if so,
|
|
* upgrade the connection from plain TCP to SSL/TLS.
|
|
*
|
|
* Return 1 if ClientHello was found and connection was upgraded to SSL/TLS,
|
|
* 0 otherwise.
|
|
*
|
|
* WARNING: This is experimental code and will need to be improved.
|
|
*
|
|
* TODO - enable search and skip bytes before ClientHello in case it does not
|
|
* start at offset 0 (i.e. chello > vec_out[0].iov_base)
|
|
* TODO - peek into more than just the current segment
|
|
* TODO - add retry mechanism for short truncated ClientHello, possibly generic
|
|
*/
|
|
int
|
|
pxy_conn_autossl_peek_and_upgrade(pxy_conn_ctx_t *ctx)
|
|
{
|
|
struct evbuffer *inbuf;
|
|
struct evbuffer_iovec vec_out[1];
|
|
const unsigned char *chello;
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Checking for a client hello\n");
|
|
}
|
|
/* peek the buffer */
|
|
inbuf = bufferevent_get_input(ctx->src.bev);
|
|
if (evbuffer_peek(inbuf, 1024, 0, vec_out, 1)) {
|
|
if (ssl_tls_clienthello_parse(vec_out[0].iov_base,
|
|
vec_out[0].iov_len,
|
|
0, &chello, &ctx->sni) == 0) {
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Peek found ClientHello\n");
|
|
}
|
|
ctx->dst.ssl = pxy_dstssl_create(ctx);
|
|
if (!ctx->dst.ssl) {
|
|
log_err_printf("Error creating SSL for "
|
|
"upgrade\n");
|
|
return 0;
|
|
}
|
|
ctx->dst.bev = bufferevent_openssl_filter_new(
|
|
ctx->evbase, ctx->dst.bev, ctx->dst.ssl,
|
|
BUFFEREVENT_SSL_CONNECTING, 0);
|
|
bufferevent_setcb(ctx->dst.bev, pxy_bev_readcb,
|
|
pxy_bev_writecb, pxy_bev_eventcb,
|
|
ctx);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>----------------------- pxy_conn_autossl_peek_and_upgrade(): bufferevent_enable\n");
|
|
bufferevent_enable(ctx->dst.bev, EV_READ|EV_WRITE);
|
|
if(!ctx->dst.bev) {
|
|
return 0;
|
|
}
|
|
if( OPTS_DEBUG(ctx->opts)) {
|
|
log_err_printf("Replaced dst bufferevent, new "
|
|
"one is %p\n", ctx->dst.bev);
|
|
}
|
|
ctx->clienthello_search = 0;
|
|
ctx->clienthello_found = 1;
|
|
return 1;
|
|
} else {
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Peek found no ClientHello\n");
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pxy_conn_terminate_free(pxy_conn_ctx_t *ctx)
|
|
{
|
|
log_err_printf("Terminating connection%s!\n",
|
|
ctx->enomem ? " (out of memory)" : "");
|
|
if (ctx->dst.bev && !ctx->dst.closed) {
|
|
bufferevent_free_and_close_fd(ctx->dst.bev, ctx);
|
|
ctx->dst.bev = NULL;
|
|
}
|
|
if (ctx->src.bev && !ctx->src.closed) {
|
|
bufferevent_free_and_close_fd(ctx->src.bev, ctx);
|
|
ctx->src.bev = NULL;
|
|
}
|
|
pxy_conn_ctx_free(ctx);
|
|
}
|
|
|
|
int
|
|
pxy_conn_is_ready_to_free(pxy_conn_ctx_t *ctx)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: ENTER fd=%d\n", ctx->fd);
|
|
|
|
pxy_conn_desc_t *src = &ctx->src;
|
|
int src_closed = ctx->src_eof;
|
|
|
|
pxy_conn_desc_t *e2src = &ctx->e2src;
|
|
int e2src_closed = ctx->e2src_eof;
|
|
|
|
int src_inbuf_empty = 1;
|
|
int src_outbuf_empty = 1;
|
|
int e2src_inbuf_empty = 1;
|
|
int e2src_outbuf_empty = 1;
|
|
|
|
if ((!src->bev || !e2src->bev) && !src_closed && !e2src_closed) {
|
|
goto not_ready;
|
|
}
|
|
|
|
if (!src->bev) {
|
|
goto ready;
|
|
}
|
|
|
|
struct evbuffer *src_inbuf = bufferevent_get_input(src->bev);
|
|
src_inbuf_empty = evbuffer_get_length(src_inbuf) == 0;
|
|
|
|
struct evbuffer *src_outbuf = bufferevent_get_output(src->bev);
|
|
src_outbuf_empty = evbuffer_get_length(src_outbuf) == 0;
|
|
|
|
struct evbuffer *e2src_inbuf = bufferevent_get_input(e2src->bev);
|
|
e2src_inbuf_empty = evbuffer_get_length(e2src_inbuf) == 0;
|
|
|
|
struct evbuffer *e2src_outbuf = bufferevent_get_output(e2src->bev);
|
|
e2src_outbuf_empty = evbuffer_get_length(e2src_outbuf) == 0;
|
|
|
|
if (!src_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_closed NOT CLOSED fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!src_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_inbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!src_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_outbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!e2src_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_closed NOT CLOSED fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!e2src_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_inbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!e2src_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_outbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (src_closed && !src_inbuf_empty && !e2src_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_closed && !src_inbuf_empty && !e2src_closed fd=%d\n", ctx->fd);
|
|
goto not_ready;
|
|
}
|
|
|
|
if (e2src_closed && !e2src_inbuf_empty && !src_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_closed && !e2src_inbuf_empty && !src_closed fd=%d\n", ctx->fd);
|
|
goto not_ready;
|
|
}
|
|
|
|
if (src_closed && e2src_closed && !ctx->initialized) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_closed && e2src_closed && !ctx->initialized fd=%d\n", ctx->fd);
|
|
goto ready;
|
|
}
|
|
|
|
if (e2src_closed && !ctx->initialized) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_closed && !ctx->initialized fd=%d\n", ctx->fd);
|
|
goto ready;
|
|
}
|
|
|
|
if (src_closed && !ctx->initialized) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: (src_closed || e2src_closed) && !ctx->initialized fd=%d\n", ctx->fd);
|
|
goto not_ready;
|
|
}
|
|
|
|
if ((src_closed && e2src_closed) || (src_closed && e2src_outbuf_empty) || (e2src_closed && src_outbuf_empty) ||
|
|
((src_closed || e2src_closed) && ctx->initialized && !ctx->mctx->child_ctx)) {
|
|
// ((src_closed || e2src_closed) && ctx->initialized && !ctx->child_ctx)) {
|
|
ctx->src_eof = 1;
|
|
ctx->e2src_eof = 1;
|
|
goto ready;
|
|
}
|
|
|
|
not_ready:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: EXIT NOT READY, fd=%d\n", ctx->fd);
|
|
return 0;
|
|
|
|
ready:
|
|
if (!src_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_inbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(src_inbuf, evbuffer_get_length(src_inbuf));
|
|
}
|
|
|
|
if (!src_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_outbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(src_outbuf, evbuffer_get_length(src_outbuf));
|
|
|
|
// size_t packet_size = evbuffer_get_length(src_outbuf);
|
|
// char *packet = malloc(packet_size);
|
|
//
|
|
// int bytes_read = evbuffer_remove(src_outbuf, packet, packet_size);
|
|
// if (bytes_read < 0) {
|
|
// log_err_printf("ERROR: evbuffer_remove cannot drain the buffer\n");
|
|
// }
|
|
//
|
|
// log_dbg_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: DRAIN src_outbuf packet (size = %d):\n%.*s\n",
|
|
// (int) packet_size, (int) packet_size, packet);
|
|
//
|
|
// if (evbuffer_get_length(src_outbuf) > 0) {
|
|
// if (evbuffer_drain(src_outbuf, evbuffer_get_length(src_outbuf)) == -1) {
|
|
// log_dbg_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: src_outbuf CANNOT DRAIN fd=%d\n", ctx->fd);
|
|
// }
|
|
// }
|
|
}
|
|
|
|
if (!e2src_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_inbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(e2src_inbuf, evbuffer_get_length(e2src_inbuf));
|
|
}
|
|
|
|
if (!e2src_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: e2src_outbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(e2src_outbuf, evbuffer_get_length(e2src_outbuf));
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free: EXIT READY, fd=%d\n", ctx->fd);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
pxy_conn_is_ready_to_free_e2(pxy_conn_ctx_t *ctx)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: ENTER fd=%d\n", ctx->fd);
|
|
|
|
// pxy_conn_ctx_t *parent_ctx = ctx->parent_ctx;
|
|
pxy_conn_ctx_t *parent_ctx;
|
|
if (ctx->mctx) {
|
|
parent_ctx = ctx->mctx->parent_ctx;
|
|
}
|
|
|
|
int e2_closed = ctx->e2dst_eof;
|
|
|
|
pxy_conn_desc_t *e2dst = &ctx->e2dst;
|
|
struct evbuffer *e2_inbuf = bufferevent_get_input(e2dst->bev);
|
|
int e2_inbuf_empty = evbuffer_get_length(e2_inbuf) == 0;
|
|
|
|
struct evbuffer *e2_outbuf = bufferevent_get_output(e2dst->bev);
|
|
int e2_outbuf_empty = evbuffer_get_length(e2_outbuf) == 0;
|
|
|
|
int dst_closed = ctx->dst_eof;
|
|
|
|
pxy_conn_desc_t *dst = &ctx->dst;
|
|
struct evbuffer *dst_inbuf = bufferevent_get_input(dst->bev);
|
|
int dst_inbuf_empty = evbuffer_get_length(dst_inbuf) == 0;
|
|
|
|
struct evbuffer *dst_outbuf = bufferevent_get_output(dst->bev);
|
|
int dst_outbuf_empty = evbuffer_get_length(dst_outbuf) == 0;
|
|
|
|
if (!e2_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_closed NOT CLOSED fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!e2_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_inbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!e2_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_outbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!dst_closed) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_closed NOT CLOSED fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!dst_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_inbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if (!dst_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_outbuf NOT EMPTY fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
if ((e2_closed && !e2_inbuf_empty && !dst_closed)) {
|
|
goto not_ready;
|
|
}
|
|
|
|
if ((dst_closed && !dst_inbuf_empty && !e2_closed)) {
|
|
goto not_ready;
|
|
}
|
|
|
|
int src_closed = 1;
|
|
int e2src_closed = 1;
|
|
|
|
if (parent_ctx) {
|
|
src_closed = parent_ctx->src_eof;
|
|
e2src_closed = parent_ctx->e2src_eof;
|
|
}
|
|
|
|
if ((e2_closed && dst_closed) || (e2_closed && dst_inbuf_empty && dst_outbuf_empty) || (dst_closed && e2_inbuf_empty && e2_outbuf_empty) ||
|
|
((src_closed || e2src_closed) && e2_inbuf_empty && e2_outbuf_empty && dst_inbuf_empty && dst_outbuf_empty) ||
|
|
!parent_ctx) {
|
|
ctx->dst_eof = 1;
|
|
ctx->e2dst_eof = 1;
|
|
goto ready;
|
|
}
|
|
|
|
not_ready:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: EXIT NOT READY, fd=%d\n", ctx->fd);
|
|
return 0;
|
|
|
|
ready:
|
|
if (!e2_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_inbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(e2_inbuf, evbuffer_get_length(e2_inbuf));
|
|
}
|
|
|
|
if (!e2_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: e2_outbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(e2_outbuf, evbuffer_get_length(e2_outbuf));
|
|
}
|
|
|
|
if (!dst_inbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_inbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(dst_inbuf, evbuffer_get_length(dst_inbuf));
|
|
}
|
|
|
|
if (!dst_outbuf_empty) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: dst_outbuf DRAIN fd=%d\n", ctx->fd);
|
|
evbuffer_drain(dst_outbuf, evbuffer_get_length(dst_outbuf));
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>>>>>>>>>>>>>>>>>>>>>>>>>> pxy_conn_is_ready_to_free_e2: EXIT READY, fd=%d\n", ctx->fd);
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
pxy_conn_free(pxy_conn_ctx_t *);
|
|
|
|
void remove_node(pxy_conn_ctx_t *node, pxy_conn_ctx_t **head) {
|
|
if (node->fd == (*head)->fd) {
|
|
*head = (*head)->child_ctx;
|
|
return;
|
|
}
|
|
|
|
pxy_conn_ctx_t *current = (*head)->child_ctx;
|
|
pxy_conn_ctx_t *previous = *head;
|
|
while (current != NULL && previous != NULL) {
|
|
if (node->fd == current->fd) {
|
|
previous->child_ctx = current->child_ctx;
|
|
return;
|
|
}
|
|
previous = current;
|
|
current = current->child_ctx;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int
|
|
pxy_conn_free_e2(pxy_conn_ctx_t *ctx)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: ENTER\n");
|
|
evutil_socket_t fd = ctx->fd;
|
|
|
|
// pxy_conn_ctx_t *parent_ctx = ctx->parent_ctx;
|
|
pxy_conn_ctx_t *parent_ctx;
|
|
if (ctx->mctx) {
|
|
parent_ctx = ctx->mctx->parent_ctx;
|
|
}
|
|
|
|
int pfd = -1;
|
|
if (parent_ctx) {
|
|
pfd = parent_ctx->fd;
|
|
}
|
|
|
|
if (pxy_conn_is_ready_to_free_e2(ctx)) {
|
|
pxy_conn_desc_t *dst = &ctx->dst;
|
|
if (dst->bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: evutil_closesocket dst->bev, fd=%d\n", bufferevent_getfd(dst->bev));
|
|
bufferevent_free_and_close_fd(dst->bev, ctx);
|
|
dst->bev = NULL;
|
|
}
|
|
|
|
pxy_conn_desc_t *e2dst = &ctx->e2dst;
|
|
if (e2dst->bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: evutil_closesocket e2dst->bev, fd=%d\n", bufferevent_getfd(e2dst->bev));
|
|
bufferevent_free_and_close_fd(e2dst->bev, ctx);
|
|
e2dst->bev = NULL;
|
|
}
|
|
|
|
int rv = 1;
|
|
// if (parent_ctx) {
|
|
if (ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: remove_node\n");
|
|
remove_node(ctx, &ctx->mctx->child_ctx);
|
|
// remove_node(ctx, &parent_ctx->child_ctx);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: CHECKING\n");
|
|
// pxy_conn_ctx_t *current_child_ctx = parent_ctx->child_ctx;
|
|
pxy_conn_ctx_t *current_child_ctx = ctx->mctx->child_ctx;
|
|
while (current_child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: NOT NULL CHILD, fd=%d\n", current_child_ctx->fd);
|
|
current_child_ctx = current_child_ctx->child_ctx;
|
|
}
|
|
|
|
if (!ctx->mctx->parent_ctx && !ctx->mctx->child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: FREEING evcl2, fd=%d, fd2=%d\n", fd, ctx->mctx->fd2);
|
|
evutil_closesocket(ctx->mctx->fd2);
|
|
evconnlistener_free(ctx->mctx->evcl2);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: RELEASING META CTX, fd=%d, parent fd=%d\n", fd, pfd);
|
|
ctx->mctx->released = 1;
|
|
rv = 2;
|
|
}
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free_e2: FREEING CTX, fd=%d, parent fd=%d\n", fd, pfd);
|
|
|
|
pxy_conn_ctx_free(ctx);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: FREED CTX, fd=%d, parent fd=%d\n", fd, pfd);
|
|
return rv;
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free_e2: CANNOT FREE CTX, fd=%d, parent fd=%d\n", fd, pfd);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int
|
|
pxy_conn_free(pxy_conn_ctx_t *ctx)
|
|
{
|
|
int fd = ctx->fd;
|
|
|
|
if (!ctx->mctx) {
|
|
goto leavefree;
|
|
}
|
|
|
|
int cfd = -1;
|
|
// if (ctx->child_ctx) {
|
|
if (ctx->mctx->child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: ctx->child_ctx NOT NULL\n");
|
|
cfd = ctx->mctx->child_ctx->fd;
|
|
}
|
|
|
|
if (pxy_conn_is_ready_to_free(ctx)) {
|
|
|
|
if (ctx->initialized) {
|
|
// pxy_conn_ctx_t *current = ctx->child_ctx;
|
|
pxy_conn_ctx_t *current = ctx->mctx->child_ctx;
|
|
while (current) {
|
|
pxy_conn_ctx_t *next = current->child_ctx;
|
|
if (pxy_conn_free_e2(current)) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: FREE child SUCCESS, fd=%d, child fd=%d\n", fd, cfd);
|
|
}
|
|
current = next;
|
|
}
|
|
}
|
|
|
|
leavefree:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: TRY FREE ctx->src\n");
|
|
pxy_conn_desc_t *src = &ctx->src;
|
|
if (src->bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: evutil_closesocket src->bev, fd=%d\n", bufferevent_getfd(src->bev));
|
|
bufferevent_free_and_close_fd(src->bev, ctx);
|
|
src->bev = NULL;
|
|
}
|
|
|
|
pxy_conn_desc_t *dst = &ctx->dst;
|
|
if (dst->bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: evutil_closesocket dst->bev, fd=%d\n", bufferevent_getfd(dst->bev));
|
|
bufferevent_free_and_close_fd(dst->bev, ctx);
|
|
dst->bev = NULL;
|
|
}
|
|
|
|
pxy_conn_desc_t *e2src = &ctx->e2src;
|
|
if (e2src->bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: evutil_closesocket e2src->bev, fd=%d\n", bufferevent_getfd(e2src->bev));
|
|
bufferevent_free_and_close_fd(e2src->bev, ctx);
|
|
e2src->bev = NULL;
|
|
}
|
|
|
|
int rv = 1;
|
|
if (ctx->mctx) {
|
|
ctx->mctx->parent_ctx = NULL;
|
|
if (!ctx->mctx->child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: FREEING evcl2, fd=%d, fd2=%d\n", fd, ctx->mctx->fd2);
|
|
evutil_closesocket(ctx->mctx->fd2);
|
|
evconnlistener_free(ctx->mctx->evcl2);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: RELEASING META CTX, fd=%d, child fd=%d\n", fd, cfd);
|
|
ctx->mctx->released = 1;
|
|
rv = 2;
|
|
}
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">############################# pxy_conn_free: FREEING ctx, fd=%d, child fd=%d\n", fd, cfd);
|
|
pxy_conn_ctx_free(ctx);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: FREED CTX, fd=%d, child fd=%d\n", fd, cfd);
|
|
return rv;
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">############################# pxy_conn_free: CANNOT FREE CTX, fd=%d, child fd=%d\n", fd, cfd);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Callback for read events on the up- and downstream connection bufferevents.
|
|
* Called when there is data ready in the input evbuffer.
|
|
*/
|
|
static void
|
|
pxy_bev_readcb(struct bufferevent *bev, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
pthread_mutex_t *cmutex = &ctx->mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
if (!ctx || !ctx->src.bev || !ctx->e2src.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: NULL ctx || bev <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: %s, fd=%d\n", event_name, ctx->fd);
|
|
|
|
if (bev == ctx->src.bev) {
|
|
if (ctx->clienthello_search) {
|
|
if (pxy_conn_autossl_peek_and_upgrade(ctx)) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: pxy_conn_autossl_peek_and_upgrade RETURNS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (ctx->e2src.bev) {
|
|
struct evbuffer *inbuf = bufferevent_get_input(bev);
|
|
|
|
struct sockaddr_in e2listener_addr;
|
|
socklen_t e2listener_len;
|
|
|
|
e2listener_len = sizeof(e2listener_addr);
|
|
|
|
// if (ctx->child_ctx) {
|
|
if (ctx->mctx->child_ctx) {
|
|
// @todo Check why this won't work
|
|
//getsockname(ctx->child_ctx->fd, &e2listener_addr, &e2listener_len);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: %s, CALLING getsockname, fd=%d ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, fd_e2=%d\n", event_name, ctx->fd, ctx->mctx->fd2);
|
|
// getsockname(ctx->mctx->fd2, &e2listener_addr, &e2listener_len);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: %s, FIRST CALL getsockname, fd=%d ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, fd_e2=%d\n", event_name, ctx->fd, ctx->mctx->fd2);
|
|
// @todo Check if the fd is same for all children
|
|
// getsockname(ctx->mctx->fd2, &e2listener_addr, &e2listener_len);
|
|
}
|
|
|
|
if (getsockname(ctx->mctx->fd2, &e2listener_addr, &e2listener_len) < 0) {
|
|
perror("getsockname");
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: %s, getsockname ERROR= %s, fd=%d ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, fd_e2=%d\n", event_name, strerror(errno), ctx->fd, ctx->mctx->fd2);
|
|
// @todo If getsockname() fails, terminate the connection instead?
|
|
// Leaving the packet in the buffer will eventually time out and drop the connection
|
|
goto leave;
|
|
}
|
|
|
|
char *addr = inet_ntoa(e2listener_addr.sin_addr);
|
|
int addr_len = strlen(addr) + 5 + 3 + 1;
|
|
|
|
char *pxy_dst = malloc(addr_len);
|
|
snprintf(pxy_dst, addr_len, "[%s]:%d", addr, (int) ntohs(e2listener_addr.sin_port));
|
|
|
|
char *custom_key = "\r\nSSLproxy-Addr: ";
|
|
size_t custom_field_len = strlen(custom_key) + strlen(pxy_dst) + 1;
|
|
|
|
char *custom_field = malloc(custom_field_len);
|
|
snprintf(custom_field, custom_field_len, "%s%s", custom_key, pxy_dst);
|
|
free(pxy_dst);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: custom_field= %s\n", custom_field);
|
|
|
|
size_t packet_size = evbuffer_get_length(inbuf);
|
|
char *packet = malloc(packet_size + custom_field_len);
|
|
if (!packet) {
|
|
ctx->enomem = 1;
|
|
goto leave;
|
|
}
|
|
|
|
int bytes_read = evbuffer_remove(inbuf, packet, packet_size);
|
|
if (bytes_read < 0) {
|
|
log_err_printf("ERROR: evbuffer_remove cannot drain the buffer\n");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: src ORIG packet (size = %d), fd=%d:\n%.*s\n",
|
|
(int) packet_size, ctx->fd, (int) packet_size, packet);
|
|
|
|
packet[packet_size] = '\0';
|
|
packet_size+= custom_field_len;
|
|
|
|
// XXX: We insert our special header line to each packet we get, right after the first \r\n, hence the target may get multiple copies
|
|
// TODO: To our header line to the first packet, should we look for GET/POST or Host header lines to insert our header field?
|
|
// But there is no guarantie that they will exist, due to fragmentation
|
|
|
|
// ATTENTION: We cannot append the ssl proxy address at the end of the packet or in between the header and the content,
|
|
// because (1) the packet may be just the first fragment split somewhere not appropriate for appending a header,
|
|
// and (2) there may not be any content
|
|
|
|
char *pos2 = strstr(packet, "\r\n");
|
|
if (pos2) {
|
|
char *header_tail = strdup(pos2);
|
|
int header_head_len = pos2 - packet;
|
|
char *header_head = malloc(header_head_len + 1);
|
|
strncpy(header_head, packet, header_head_len);
|
|
header_head[header_head_len] = '\0';
|
|
|
|
snprintf(packet, packet_size, "%s%s%s", header_head, custom_field, header_tail);
|
|
|
|
free(header_head);
|
|
free(header_tail);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: No CRNL in packet\n");
|
|
packet_size-= custom_field_len;
|
|
packet_size++;
|
|
}
|
|
|
|
free(custom_field);
|
|
|
|
struct evbuffer *e2outbuf = bufferevent_get_output(ctx->e2src.bev);
|
|
|
|
// Decrement packet_size to avoid copying the null termination
|
|
int add_result = evbuffer_add(e2outbuf, packet, packet_size - 1);
|
|
if (add_result < 0) {
|
|
log_err_printf("ERROR: evbuffer_add failed\n");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: src packet (size = %d), fd=%d:\n%.*s\n",
|
|
(int) packet_size, ctx->fd, (int) packet_size, packet);
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: src packet (size = %d)\n", (int) packet_size);
|
|
|
|
free(packet);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: src ctx->e2src.bev NULL\n");
|
|
}
|
|
}
|
|
else if (bev == ctx->e2src.bev) {
|
|
if (ctx->src.bev) {
|
|
struct evbuffer *inbuf = bufferevent_get_input(bev);
|
|
|
|
size_t packet_size = evbuffer_get_length(inbuf);
|
|
char *packet = malloc(packet_size);
|
|
if (!packet) {
|
|
ctx->enomem = 1;
|
|
goto leave;
|
|
}
|
|
|
|
int bytes_read = evbuffer_remove(inbuf, packet, packet_size);
|
|
if (bytes_read < 0) {
|
|
log_err_printf("ERROR: evbuffer_remove cannot drain the buffer\n");
|
|
}
|
|
|
|
struct evbuffer *outbuf = bufferevent_get_output(ctx->src.bev);
|
|
|
|
int add_result = evbuffer_add(outbuf, packet, packet_size);
|
|
if (add_result < 0) {
|
|
log_err_printf("ERROR: evbuffer_add failed\n");
|
|
}
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: e2src packet (size = %d):\n%.*s\n",
|
|
// (int) packet_size, (int) packet_size, packet);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: e2src packet (size = %d)\n", (int) packet_size);
|
|
|
|
free(packet);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: e2src ctx->src.bev NULL\n");
|
|
}
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb: EXIT\n");
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
|
|
static void
|
|
pxy_bev_readcb_e2(struct bufferevent *bev, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>....................... pxy_bev_readcb_e2: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>....................... pxy_bev_readcb_e2: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
pthread_mutex_t *cmutex = &ctx->mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
if (!ctx || !ctx->e2dst.bev || !ctx->dst.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>....................... pxy_bev_readcb_e2: NULL ctx || bev <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
// pxy_conn_ctx_t *parent_ctx = ctx->parent_ctx;
|
|
pxy_conn_ctx_t *parent_ctx = ctx->mctx->parent_ctx;
|
|
evutil_socket_t pfd = -1;
|
|
if (parent_ctx) {
|
|
pfd = parent_ctx->fd;
|
|
}
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: %s, fd=%d\n", event_name, ctx->fd);
|
|
|
|
struct sockaddr_in peeraddr;
|
|
socklen_t peeraddrlen;
|
|
|
|
peeraddrlen = sizeof(peeraddr);
|
|
getpeername(ctx->fd, &peeraddr, &peeraddrlen);
|
|
|
|
if (bev == ctx->e2dst.bev) {
|
|
if (ctx->dst.bev) {
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>.................................................................................... pxy_bev_readcb_e2: PEER [%s]:%d <<<<< fd=%d, parent fd=%d\n", inet_ntoa(peeraddr.sin_addr), (int) ntohs(peeraddr.sin_port), ctx->fd, pfd);
|
|
|
|
struct evbuffer *e2outbuf = bufferevent_get_input(ctx->e2dst.bev);
|
|
|
|
char *custom_key = "SSLproxy-Addr: ";
|
|
struct evbuffer_ptr ebp = evbuffer_search(e2outbuf, custom_key, strlen(custom_key), NULL);
|
|
if (ebp.pos != -1) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: evbuffer_search FOUND SSLproxy-Addr at %d\n", ebp.pos);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>....................... pxy_bev_readcb_e2: evbuffer_search FAILED\n");
|
|
}
|
|
|
|
size_t packet_size = evbuffer_get_length(e2outbuf);
|
|
// ATTENTION: +1 is for null termination
|
|
char *packet = malloc(packet_size + 1);
|
|
if (!packet) {
|
|
ctx->enomem = 1;
|
|
goto leave;
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: packet_size\n");
|
|
|
|
if (packet_size > 0) {
|
|
int bytes_read = evbuffer_remove(e2outbuf, packet, packet_size);
|
|
if (bytes_read < 0) {
|
|
log_err_printf("ERROR: evbuffer_remove cannot drain the buffer\n");
|
|
}
|
|
|
|
packet[packet_size] = '\0';
|
|
|
|
char *pos = strstr(packet, "SSLproxy-Addr: ");
|
|
if (pos) {
|
|
int header_head_len = pos - packet;
|
|
char *header_head = malloc(header_head_len + 1);
|
|
strncpy(header_head, packet, header_head_len);
|
|
header_head[header_head_len] = '\0';
|
|
|
|
char *pos2 = strstr(pos, "\r\n");
|
|
if (pos2) {
|
|
char *header_tail = strdup(pos2 + 2);
|
|
int header_tail_len = strlen(header_tail);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: REMOVED SSLproxy-Addr, packet_size old=%d, new=%d <<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n",
|
|
packet_size, header_head_len + header_tail_len);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: header_head (size = %d):\n%s\n",
|
|
header_head_len, header_head);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: header_tail (size = %d):\n%s\n",
|
|
header_tail_len, header_tail);
|
|
|
|
// ATTENTION: Do not add 1 to packet_size for null termination, do that in snprintf(),
|
|
// otherwise we get an extra byte in the outbuf
|
|
packet_size = header_head_len + header_tail_len;
|
|
snprintf(packet, packet_size + 1, "%s%s", header_head, header_tail);
|
|
|
|
free(header_tail);
|
|
}
|
|
|
|
free(header_head);
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: bufferevent_get_output\n");
|
|
|
|
struct evbuffer *outbuf = bufferevent_get_output(ctx->dst.bev);
|
|
int add_result = evbuffer_add(outbuf, packet, packet_size);
|
|
if (add_result < 0) {
|
|
log_err_printf("ERROR: evbuffer_add failed\n");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: e2dst packet (size = %d), fd=%d, parent fd=%d:\n%.*s\n",
|
|
(int) packet_size, ctx->fd, pfd, (int) packet_size, packet);
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: e2dst packet (size = %d)\n", (int) packet_size);
|
|
}
|
|
free(packet);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>....................... pxy_bev_readcb_e2: e2dst ctx->dst.bev NULL\n");
|
|
}
|
|
}
|
|
else if (bev == ctx->dst.bev) {
|
|
if (ctx->e2dst.bev) {
|
|
struct evbuffer *inbuf = bufferevent_get_input(bev);
|
|
|
|
size_t packet_size = evbuffer_get_length(inbuf);
|
|
char *packet = malloc(packet_size);
|
|
if (!packet) {
|
|
ctx->enomem = 1;
|
|
goto leave;
|
|
// return;
|
|
}
|
|
|
|
int bytes_read = evbuffer_remove(inbuf, packet, packet_size);
|
|
|
|
if (bytes_read < 0) {
|
|
log_err_printf("ERROR: evbuffer_remove cannot drain the buffer\n");
|
|
}
|
|
|
|
struct evbuffer *e2outbuf = bufferevent_get_output(ctx->e2dst.bev);
|
|
|
|
int add_result = evbuffer_add(e2outbuf, packet, packet_size);
|
|
if (add_result < 0) {
|
|
log_err_printf("ERROR: evbuffer_add failed\n");
|
|
}
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb_e2: dst packet (size = %d):\n%.*s\n",
|
|
// (int) packet_size, (int) packet_size, packet);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb_e2: dst packet (size = %d)\n", (int) packet_size);
|
|
|
|
free(packet);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>,,,,,,,,,,,,,,,,,,,,,,, pxy_bev_readcb_e2: dst ctx->e2dst.bev NULL\n");
|
|
}
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>....................... pxy_bev_readcb_e2: EXIT\n");
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
|
|
static int
|
|
pxy_connected_enable(struct bufferevent *bev, pxy_conn_ctx_t *ctx, char *event_name)
|
|
{
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_connected_enable: ctx NULL\n");
|
|
return 0;
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_connected_enable: CONNECTED %s fd=%d\n", event_name, ctx->fd);
|
|
|
|
if (bev == ctx->dst.bev && !ctx->dst_connected) {
|
|
ctx->dst_connected = 1;
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_connected_enable: pxy_bufferevent_setup for e2src fd=%d\n", ctx->fd);
|
|
ctx->e2src.ssl= NULL;
|
|
ctx->e2src.bev = pxy_bufferevent_setup(ctx, -1, ctx->e2src.ssl);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_connected_enable: bufferevent_socket_connect for e2src fd=%d\n", ctx->fd);
|
|
if (bufferevent_socket_connect(ctx->e2src.bev,
|
|
(struct sockaddr *)&ctx->spec->e2src_addr,
|
|
ctx->spec->e2src_addrlen) == -1) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_connected_enable: FAILED bufferevent_socket_connect: e2src\n");
|
|
}
|
|
bufferevent_enable(ctx->e2src.bev, EV_READ|EV_WRITE);
|
|
}
|
|
|
|
if (bev == ctx->e2src.bev && !ctx->e2src_connected) {
|
|
ctx->e2src_connected = 1;
|
|
}
|
|
|
|
if (ctx->dst_connected && ctx->e2src_connected && !ctx->connected) {
|
|
ctx->connected = 1;
|
|
|
|
pxy_conn_desc_t *dst_ctx = &ctx->dst;
|
|
if ((ctx->spec->ssl || ctx->clienthello_found) && !ctx->passthrough) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_srcssl_create <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
ctx->src.ssl = pxy_srcssl_create(ctx, dst_ctx->ssl);
|
|
if (!ctx->src.ssl) {
|
|
bufferevent_free_and_close_fd(bev, ctx);
|
|
ctx->dst.bev = NULL;
|
|
ctx->dst.ssl = NULL;
|
|
if (ctx->opts->passthrough && !ctx->enomem) {
|
|
ctx->passthrough = 1;
|
|
ctx->connected = 0;
|
|
log_dbg_printf("No cert found; "
|
|
"falling back "
|
|
"to passthrough\n");
|
|
pxy_fd_readcb(ctx->fd, 0, ctx);
|
|
return;
|
|
}
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
}
|
|
if (ctx->clienthello_found) {
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf(">>>>>=================================== pxy_connected_enable: Completing autossl upgrade\n");
|
|
}
|
|
ctx->src.bev = bufferevent_openssl_filter_new(
|
|
ctx->evbase, ctx->src.bev, ctx->src.ssl,
|
|
BUFFEREVENT_SSL_ACCEPTING,
|
|
BEV_OPT_DEFER_CALLBACKS);
|
|
bufferevent_setcb(ctx->src.bev, pxy_bev_readcb,
|
|
pxy_bev_writecb, pxy_bev_eventcb,
|
|
ctx);
|
|
// bufferevent_enable(ctx->src.bev, EV_READ|EV_WRITE);
|
|
} else {
|
|
// ctx->src.bev = pxy_bufferevent_setup(ctx, ctx->fd,
|
|
// ctx->src.ssl);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_connected_enable: SETUP src.bev fd=%d\n", ctx->fd);
|
|
ctx->src.bev = pxy_bufferevent_setup(ctx, ctx->fd, ctx->src.ssl);
|
|
if (!ctx->src.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_connected_enable: src.bev NULL FREEING\n");
|
|
|
|
bufferevent_free_and_close_fd(bev, ctx);
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
bufferevent_enable(ctx->src.bev, EV_READ|EV_WRITE);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Callback for write events on the up- and downstream connection bufferevents.
|
|
* Called when either all data from the output evbuffer has been written,
|
|
* or if the outbuf is only half full again after having been full.
|
|
*/
|
|
static void
|
|
pxy_bev_writecb(struct bufferevent *bev, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
proxy_conn_meta_ctx_t *mctx = ctx->mctx;
|
|
pthread_mutex_t *cmutex = &mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
int rv = 0;
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: event_name == UNKWN <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< NOT INIT\n");
|
|
goto leave;
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: %s, %d\n", event_name, ctx->fd);
|
|
|
|
// XXX: For Squid's Zero Sized Reply
|
|
if ((bev == ctx->dst.bev) && !ctx->dst_connected) {
|
|
// @attention Do not call pxy_bev_eventcb() instead, that would cause deadlock
|
|
//pxy_bev_eventcb(bev, BEV_EVENT_CONNECTED, ctx);
|
|
pxy_connected_enable(bev, ctx, event_name);
|
|
}
|
|
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: NULL ctx || bev <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
|
|
if (ctx->src_eof || ctx->e2src_eof) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb(): TRY CLOSING\n");
|
|
rv = pxy_conn_free(ctx);
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: EXIT\n");
|
|
if (rv == 2) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>+++++++++++++++++++++++++++++++++++ pxy_bev_writecb: EXIT FREE META CTX\n");
|
|
pthread_mutex_destroy(cmutex);
|
|
free(mctx);
|
|
} else {
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pxy_bev_writecb_e2(struct bufferevent *bev, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
|
|
// assert(ctx != NULL);
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>??????????????????????????? pxy_bev_writecb_e2: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>??????????????????????????? pxy_bev_writecb_e2: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
proxy_conn_meta_ctx_t *mctx = ctx->mctx;
|
|
pthread_mutex_t *cmutex = &mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
// pxy_conn_ctx_t *parent_ctx = ctx->parent_ctx;
|
|
pxy_conn_ctx_t *parent_ctx = ctx->mctx->parent_ctx;
|
|
|
|
int rv = 0;
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>??????????????????????????? pxy_bev_writecb_e2: NULL ctx <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>??????????????????????????? pxy_bev_writecb_e2: %s, %d\n", event_name, ctx->fd);
|
|
|
|
evutil_socket_t fd = ctx->fd;
|
|
|
|
int src_eof = 1;
|
|
int e2src_eof = 1;
|
|
if (parent_ctx) {
|
|
src_eof = parent_ctx->src_eof;
|
|
e2src_eof = parent_ctx->e2src_eof;
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>??????????????????????????? pxy_bev_writecb_e2: %s, %d-%d-%d-%d, fd=%d\n", event_name,
|
|
src_eof, e2src_eof, ctx->e2dst_eof, ctx->dst_eof, fd);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>??????????????????????????? pxy_bev_writecb_e2: ctx->parent_ctx NULL %s, %d\n", event_name, fd);
|
|
}
|
|
|
|
if (src_eof || e2src_eof || ctx->e2dst_eof || ctx->dst_eof) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>??????????????????????????? pxy_bev_writecb_e2: 1+ EOF ASSUME e2dst EOF: %d\n", fd);
|
|
rv = pxy_conn_free_e2(ctx);
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>??????????????????????????? pxy_bev_writecb_e2: EXIT\n");
|
|
if (rv == 2) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>??????????????????????????? pxy_bev_writecb_e2: EXIT FREE META CTX\n");
|
|
pthread_mutex_destroy(cmutex);
|
|
free(mctx);
|
|
} else {
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Callback for meta events on the up- and downstream connection bufferevents.
|
|
* Called when EOF has been reached, a connection has been made, and on errors.
|
|
*/
|
|
static void
|
|
pxy_bev_eventcb(struct bufferevent *bev, short events, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
proxy_conn_meta_ctx_t *mctx = ctx->mctx;
|
|
pthread_mutex_t *cmutex = &mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
int rv = 0;
|
|
|
|
evutil_socket_t fd = -1;
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: NULL ctx <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
fd = ctx->fd;
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb ENTER fd=%d\n", ctx->fd);
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: event_name == UNKWN <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< NOT INIT\n");
|
|
goto leave;
|
|
}
|
|
|
|
if (events & BEV_EVENT_CONNECTED) {
|
|
if (!pxy_connected_enable(bev, ctx, event_name)) {
|
|
goto leave;
|
|
}
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: WILL call pxy_srccert_write <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
pxy_conn_desc_t *src_ctx = &ctx->src;
|
|
|
|
/* write SSL certificates to gendir */
|
|
if (src_ctx->ssl && (bev == ctx->src.bev) && ctx->opts->certgendir) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: pxy_srccert_write <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< SSL\n");
|
|
pxy_srccert_write(ctx);
|
|
}
|
|
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
if (src_ctx->ssl) {
|
|
/* for SSL, we get two connect events */
|
|
log_dbg_printf("SSL connected %s [%s]:%s"
|
|
" %s %s\n",
|
|
bev == ctx->dst.bev ?
|
|
"to" : "from",
|
|
bev == ctx->dst.bev ?
|
|
ctx->dsthost_str :
|
|
ctx->srchost_str,
|
|
bev == ctx->dst.bev ?
|
|
ctx->dstport_str :
|
|
ctx->srcport_str,
|
|
SSL_get_version(src_ctx->ssl),
|
|
SSL_get_cipher(src_ctx->ssl));
|
|
} else {
|
|
/* for TCP, we get only a dst connect event,
|
|
* since src was already connected from the
|
|
* beginning; mirror SSL debug output anyway
|
|
* in order not to confuse anyone who might be
|
|
* looking closely at the output */
|
|
log_dbg_printf("TCP connected to [%s]:%s\n",
|
|
ctx->dsthost_str,
|
|
ctx->dstport_str);
|
|
log_dbg_printf("TCP connected from [%s]:%s\n",
|
|
ctx->srchost_str,
|
|
ctx->srcport_str);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if (events & BEV_EVENT_ERROR) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>=================================== pxy_bev_eventcb: ERROR %s fd=%d\n", event_name, ctx->fd);
|
|
|
|
unsigned long sslerr;
|
|
int have_sslerr = 0;
|
|
|
|
/* Can happen for socket errs, ssl errs;
|
|
* may happen for unclean ssl socket shutdowns. */
|
|
sslerr = bufferevent_get_openssl_error(bev);
|
|
if (sslerr)
|
|
have_sslerr = 1;
|
|
if (!errno && !sslerr) {
|
|
#if LIBEVENT_VERSION_NUMBER >= 0x02010000
|
|
/* We have disabled notification for unclean shutdowns
|
|
* so this should not happen; log a warning. */
|
|
log_err_printf("Warning: Spurious error from "
|
|
"bufferevent (errno=0,sslerr=0)\n");
|
|
#else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
|
|
/* Older versions of libevent will report these. */
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Unclean SSL shutdown.\n");
|
|
}
|
|
#endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
|
|
} else if (ERR_GET_REASON(sslerr) ==
|
|
SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE) {
|
|
/* these can happen due to client cert auth,
|
|
* only log error if debugging is activated */
|
|
log_dbg_printf("Error from bufferevent: "
|
|
"%i:%s %lu:%i:%s:%i:%s:%i:%s\n",
|
|
errno,
|
|
errno ? strerror(errno) : "-",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
sslerr ?
|
|
ERR_reason_error_string(sslerr) : "-",
|
|
ERR_GET_LIB(sslerr),
|
|
sslerr ?
|
|
ERR_lib_error_string(sslerr) : "-",
|
|
ERR_GET_FUNC(sslerr),
|
|
sslerr ?
|
|
ERR_func_error_string(sslerr) : "-");
|
|
while ((sslerr = bufferevent_get_openssl_error(bev))) {
|
|
log_dbg_printf("Additional SSL error: "
|
|
"%lu:%i:%s:%i:%s:%i:%s\n",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
ERR_reason_error_string(sslerr),
|
|
ERR_GET_LIB(sslerr),
|
|
ERR_lib_error_string(sslerr),
|
|
ERR_GET_FUNC(sslerr),
|
|
ERR_func_error_string(sslerr));
|
|
}
|
|
} else {
|
|
/* real errors */
|
|
log_err_printf("Error from bufferevent: "
|
|
"%i:%s %lu:%i:%s:%i:%s:%i:%s\n",
|
|
errno,
|
|
errno ? strerror(errno) : "-",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
sslerr ?
|
|
ERR_reason_error_string(sslerr) : "-",
|
|
ERR_GET_LIB(sslerr),
|
|
sslerr ?
|
|
ERR_lib_error_string(sslerr) : "-",
|
|
ERR_GET_FUNC(sslerr),
|
|
sslerr ?
|
|
ERR_func_error_string(sslerr) : "-");
|
|
while ((sslerr = bufferevent_get_openssl_error(bev))) {
|
|
log_err_printf("Additional SSL error: "
|
|
"%lu:%i:%s:%i:%s:%i:%s\n",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
ERR_reason_error_string(sslerr),
|
|
ERR_GET_LIB(sslerr),
|
|
ERR_lib_error_string(sslerr),
|
|
ERR_GET_FUNC(sslerr),
|
|
ERR_func_error_string(sslerr));
|
|
}
|
|
}
|
|
|
|
pxy_conn_desc_t *src_ctx = &ctx->src;
|
|
/* we only get a single disconnect event here for both connections */
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("%s disconnected to [%s]:%s\n",
|
|
src_ctx->ssl ? "SSL" : "TCP",
|
|
ctx->dsthost_str, ctx->dstport_str);
|
|
log_dbg_printf("%s disconnected from [%s]:%s\n",
|
|
src_ctx->ssl ? "SSL" : "TCP",
|
|
ctx->srchost_str, ctx->srcport_str);
|
|
}
|
|
|
|
// this->closed = 1;
|
|
// bufferevent_free_and_close_fd(bev, ctx);
|
|
// this->bev = NULL;
|
|
// if (other->closed) {
|
|
// pxy_conn_ctx_free(ctx);
|
|
// }
|
|
}
|
|
|
|
if (events & BEV_EVENT_EOF) {
|
|
if (bev == ctx->dst.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: dst EOF: %d\n", ctx->fd);
|
|
ctx->dst_eof = 1;
|
|
} else if (bev == ctx->e2src.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: e2src EOF: %d\n", ctx->fd);
|
|
ctx->e2src_eof = 1;
|
|
} else if (bev == ctx->src.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: src EOF: %d\n", ctx->fd);
|
|
ctx->src_eof = 1;
|
|
}
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb: EOF %s, %d-%d-%d-%d, fd=%d\n", event_name,
|
|
ctx->src_eof, ctx->e2src_eof, ctx->e2dst_eof, ctx->dst_eof, ctx->fd);
|
|
}
|
|
|
|
if (ctx->src_eof || ctx->e2src_eof) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>=================================== pxy_bev_eventcb(): 1+ EOF TRY FREEING fd=%d\n", ctx->fd);
|
|
rv = pxy_conn_free(ctx);
|
|
goto leave;
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>=================================== pxy_bev_eventcb EXIT fd=%d\n", fd);
|
|
|
|
if (rv == 2) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINER, ">>>>>=================================== pxy_bev_eventcb: EXIT FREE META CTX\n");
|
|
pthread_mutex_destroy(cmutex);
|
|
free(mctx);
|
|
} else {
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pxy_bev_eventcb_e2(struct bufferevent *bev, short events, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: ctx NULL\n");
|
|
return;
|
|
}
|
|
if (!ctx->mctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: ctx->mctx NULL\n");
|
|
return;
|
|
}
|
|
|
|
// pthread_mutex_t *cmutex = &ctx->thrmgr->mutex2;
|
|
proxy_conn_meta_ctx_t *mctx = ctx->mctx;
|
|
pthread_mutex_t *cmutex = &mctx->mutex;
|
|
pthread_mutex_lock(cmutex);
|
|
|
|
int rv = 0;
|
|
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: NULL ctx <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
// pxy_conn_ctx_t *parent_ctx = ctx->parent_ctx;
|
|
pxy_conn_ctx_t *parent_ctx = ctx->mctx->parent_ctx;
|
|
|
|
char event_name[6] = "\0\0\0\0\0\0";
|
|
if (bev == ctx->src.bev) {
|
|
strcpy(event_name, "src");
|
|
} else if (bev == ctx->dst.bev) {
|
|
strcpy(event_name, "dst");
|
|
} else if (bev == ctx->e2src.bev) {
|
|
strcpy(event_name, "e2src");
|
|
} else if (bev == ctx->e2dst.bev) {
|
|
strcpy(event_name, "e2dst");
|
|
} else if (bev == NULL) {
|
|
strcpy(event_name, "NULL");
|
|
} else {
|
|
strcpy(event_name, "UNKWN");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: ENTER %s fd=%d\n", event_name, ctx->fd);
|
|
|
|
if (events & BEV_EVENT_CONNECTED) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: CONNECTED %s fd=%d\n", event_name, ctx->fd);
|
|
}
|
|
|
|
int fd = ctx->fd;
|
|
|
|
if (events & BEV_EVENT_EOF) {
|
|
int e2dst_eof = ctx->e2dst_eof;
|
|
int dst_eof = ctx->dst_eof;
|
|
|
|
if (bev == ctx->e2dst.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: e2dst EOF: %d\n", fd);
|
|
|
|
ctx->e2dst_eof = 1;
|
|
|
|
rv = pxy_conn_free_e2(ctx);
|
|
}
|
|
else if (bev == ctx->dst.bev) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: dst EOF: %d\n", fd);
|
|
|
|
ctx->dst_eof = 1;
|
|
|
|
rv = pxy_conn_free_e2(ctx);
|
|
}
|
|
if (parent_ctx) {
|
|
int src_eof = parent_ctx->src_eof;
|
|
int e2src_eof = parent_ctx->e2src_eof;
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: EOF %s, %d-%d-%d-%d, fd=%d\n", event_name,
|
|
src_eof, e2src_eof, e2dst_eof, dst_eof, fd);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: EOF %s, NO PARENT, %d-%d, fd=%d\n", event_name,
|
|
e2dst_eof, dst_eof, fd);
|
|
}
|
|
}
|
|
|
|
if (events & BEV_EVENT_ERROR) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: ERROR\n");
|
|
unsigned long sslerr;
|
|
int have_sslerr = 0;
|
|
|
|
/* Can happen for socket errs, ssl errs;
|
|
* may happen for unclean ssl socket shutdowns. */
|
|
sslerr = bufferevent_get_openssl_error(bev);
|
|
if (sslerr)
|
|
have_sslerr = 1;
|
|
if (!errno && !sslerr) {
|
|
#if LIBEVENT_VERSION_NUMBER >= 0x02010000
|
|
/* We have disabled notification for unclean shutdowns
|
|
* so this should not happen; log a warning. */
|
|
log_err_printf("Warning: Spurious error from "
|
|
"bufferevent (errno=0,sslerr=0)\n");
|
|
#else /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
|
|
/* Older versions of libevent will report these. */
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("Unclean SSL shutdown.\n");
|
|
}
|
|
#endif /* LIBEVENT_VERSION_NUMBER < 0x02010000 */
|
|
} else if (ERR_GET_REASON(sslerr) ==
|
|
SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE) {
|
|
/* these can happen due to client cert auth,
|
|
* only log error if debugging is activated */
|
|
log_dbg_printf("Error from bufferevent: "
|
|
"%i:%s %lu:%i:%s:%i:%s:%i:%s\n",
|
|
errno,
|
|
errno ? strerror(errno) : "-",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
sslerr ?
|
|
ERR_reason_error_string(sslerr) : "-",
|
|
ERR_GET_LIB(sslerr),
|
|
sslerr ?
|
|
ERR_lib_error_string(sslerr) : "-",
|
|
ERR_GET_FUNC(sslerr),
|
|
sslerr ?
|
|
ERR_func_error_string(sslerr) : "-");
|
|
while ((sslerr = bufferevent_get_openssl_error(bev))) {
|
|
log_dbg_printf("Additional SSL error: "
|
|
"%lu:%i:%s:%i:%s:%i:%s\n",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
ERR_reason_error_string(sslerr),
|
|
ERR_GET_LIB(sslerr),
|
|
ERR_lib_error_string(sslerr),
|
|
ERR_GET_FUNC(sslerr),
|
|
ERR_func_error_string(sslerr));
|
|
}
|
|
} else {
|
|
/* real errors */
|
|
log_err_printf("Error from bufferevent: "
|
|
"%i:%s %lu:%i:%s:%i:%s:%i:%s\n",
|
|
errno,
|
|
errno ? strerror(errno) : "-",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
sslerr ?
|
|
ERR_reason_error_string(sslerr) : "-",
|
|
ERR_GET_LIB(sslerr),
|
|
sslerr ?
|
|
ERR_lib_error_string(sslerr) : "-",
|
|
ERR_GET_FUNC(sslerr),
|
|
sslerr ?
|
|
ERR_func_error_string(sslerr) : "-");
|
|
while ((sslerr = bufferevent_get_openssl_error(bev))) {
|
|
log_err_printf("Additional SSL error: "
|
|
"%lu:%i:%s:%i:%s:%i:%s\n",
|
|
sslerr,
|
|
ERR_GET_REASON(sslerr),
|
|
ERR_reason_error_string(sslerr),
|
|
ERR_GET_LIB(sslerr),
|
|
ERR_lib_error_string(sslerr),
|
|
ERR_GET_FUNC(sslerr),
|
|
ERR_func_error_string(sslerr));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>>--------------------- pxy_bev_eventcb_e2: EXIT\n");
|
|
|
|
if (rv == 2) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>>--------------------- pxy_bev_eventcb_e2: EXIT FREE META CTX\n");
|
|
pthread_mutex_destroy(cmutex);
|
|
free(mctx);
|
|
} else {
|
|
pthread_mutex_unlock(cmutex);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Complete the connection. This gets called after finding out where to
|
|
* connect to.
|
|
*/
|
|
static void
|
|
pxy_conn_connect(pxy_conn_ctx_t *ctx)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: ENTER fd=%d\n", ctx->fd);
|
|
if (!ctx->addrlen) {
|
|
log_err_printf("No target address; aborting connection\n");
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
|
|
/* create server-side socket and eventbuffer */
|
|
if (ctx->spec->ssl && !ctx->passthrough) {
|
|
ctx->dst.ssl = pxy_dstssl_create(ctx);
|
|
if (!ctx->dst.ssl) {
|
|
log_err_printf("Error creating SSL\n");
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: pxy_bufferevent_setup for dst fd=%d\n", ctx->fd);
|
|
ctx->dst.bev = pxy_bufferevent_setup(ctx, -1, ctx->dst.ssl);
|
|
if (!ctx->dst.bev) {
|
|
if (ctx->dst.ssl) {
|
|
SSL_free(ctx->dst.ssl);
|
|
ctx->dst.ssl = NULL;
|
|
}
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< bufferevent_enable(ctx->dst.bev)\n");
|
|
bufferevent_enable(ctx->dst.bev, EV_READ|EV_WRITE);
|
|
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
char *host, *port;
|
|
if (sys_sockaddr_str((struct sockaddr *)&ctx->addr,
|
|
ctx->addrlen, &host, &port) != 0) {
|
|
log_dbg_printf("Connecting to [?]:?\n");
|
|
} else {
|
|
log_dbg_printf("Connecting to [%s]:%s\n", host, port);
|
|
free(host);
|
|
free(port);
|
|
}
|
|
}
|
|
|
|
/* initiate connection */
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: bufferevent_socket_connect for dst fd=%d\n", ctx->fd);
|
|
bufferevent_socket_connect(ctx->dst.bev,
|
|
(struct sockaddr *)&ctx->addr,
|
|
ctx->addrlen);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: EXIT fd=%d\n", ctx->fd);
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
/*
|
|
* The SNI hostname has been resolved. Fill the first resolved address into
|
|
* the context and continue connecting.
|
|
*/
|
|
static void
|
|
pxy_sni_resolve_cb(int errcode, struct evutil_addrinfo *ai, void *arg)
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
|
|
if (errcode) {
|
|
log_err_printf("Cannot resolve SNI hostname '%s': %s\n",
|
|
ctx->sni, evutil_gai_strerror(errcode));
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
|
|
memcpy(&ctx->addr, ai->ai_addr, ai->ai_addrlen);
|
|
ctx->addrlen = ai->ai_addrlen;
|
|
evutil_freeaddrinfo(ai);
|
|
pxy_conn_connect(ctx);
|
|
}
|
|
#endif /* !OPENSSL_NO_TLSEXT */
|
|
|
|
/*
|
|
* The src fd is readable. This is used to sneak-preview the SNI on SSL
|
|
* connections. If ctx->ev is NULL, it was called manually for a non-SSL
|
|
* connection. If ctx->passthrough is set, it was called a second time
|
|
* after the first ssl callout failed because of client cert auth.
|
|
*/
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
#define MAYBE_UNUSED
|
|
#else /* OPENSSL_NO_TLSEXT */
|
|
#define MAYBE_UNUSED UNUSED
|
|
#endif /* OPENSSL_NO_TLSEXT */
|
|
static void
|
|
pxy_fd_readcb(MAYBE_UNUSED evutil_socket_t fd, UNUSED short what, void *arg)
|
|
#undef MAYBE_UNUSED
|
|
{
|
|
pxy_conn_ctx_t *ctx = arg;
|
|
|
|
#ifndef OPENSSL_NO_TLSEXT
|
|
/* for SSL, peek ClientHello and parse SNI from it */
|
|
if (ctx->spec->ssl && !ctx->passthrough /*&& ctx->ev*/) {
|
|
unsigned char buf[1024];
|
|
ssize_t n;
|
|
const unsigned char *chello;
|
|
int rv;
|
|
|
|
n = recv(fd, buf, sizeof(buf), MSG_PEEK);
|
|
if (n == -1) {
|
|
log_err_printf("Error peeking on fd, aborting "
|
|
"connection\n");
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
if (n == 0) {
|
|
/* socket got closed while we were waiting */
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
|
|
rv = ssl_tls_clienthello_parse(buf, n, 0, &chello, &ctx->sni);
|
|
if ((rv == 1) && !chello) {
|
|
log_err_printf("Peeking did not yield a (truncated) "
|
|
"ClientHello message, "
|
|
"aborting connection\n");
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
if (OPTS_DEBUG(ctx->opts)) {
|
|
log_dbg_printf("SNI peek: [%s] [%s]\n",
|
|
ctx->sni ? ctx->sni : "n/a",
|
|
((rv == 1) && chello) ?
|
|
"incomplete" : "complete");
|
|
}
|
|
if ((rv == 1) && chello && (ctx->sni_peek_retries++ < 50)) {
|
|
/* ssl_tls_clienthello_parse indicates that we
|
|
* should retry later when we have more data, and we
|
|
* haven't reached the maximum retry count yet.
|
|
* Reschedule this event as timeout-only event in
|
|
* order to prevent busy looping over the read event.
|
|
* Because we only peeked at the pending bytes and
|
|
* never actually read them, fd is still ready for
|
|
* reading now. We use 25 * 0.2 s = 5 s timeout. */
|
|
struct timeval retry_delay = {0, 100};
|
|
|
|
event_free(ctx->ev);
|
|
ctx->ev = event_new(ctx->evbase, fd, 0,
|
|
pxy_fd_readcb, ctx);
|
|
if (!ctx->ev) {
|
|
log_err_printf("Error creating retry "
|
|
"event, aborting "
|
|
"connection\n");
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
event_add(ctx->ev, &retry_delay);
|
|
return;
|
|
}
|
|
event_free(ctx->ev);
|
|
ctx->ev = NULL;
|
|
}
|
|
|
|
if (ctx->sni && !ctx->addrlen && ctx->spec->sni_port) {
|
|
char sniport[6];
|
|
struct evutil_addrinfo hints;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = ctx->af;
|
|
hints.ai_flags = EVUTIL_AI_ADDRCONFIG;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
|
|
snprintf(sniport, sizeof(sniport), "%i", ctx->spec->sni_port);
|
|
evdns_getaddrinfo(ctx->dnsbase, ctx->sni, sniport, &hints,
|
|
pxy_sni_resolve_cb, ctx);
|
|
return;
|
|
}
|
|
#endif /* !OPENSSL_NO_TLSEXT */
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_fd_readcb() pxy_conn_connect\n");
|
|
pxy_conn_connect(ctx);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> EXIT pxy_fd_readcb()\n");
|
|
}
|
|
|
|
/*
|
|
* Callback for accept events on the socket listener bufferevent.
|
|
* Called when a new incoming connection has been accepted.
|
|
* Initiates the connection to the server. The incoming connection
|
|
* from the client is not being activated until we have a successful
|
|
* connection to the server, because we need the server's certificate
|
|
* in order to set up the SSL session to the client.
|
|
* For consistency, plain TCP works the same way, even if we could
|
|
* start reading from the client while waiting on the connection to
|
|
* the server to connect.
|
|
*/
|
|
pxy_conn_ctx_t *
|
|
pxy_conn_setup(evutil_socket_t fd,
|
|
struct sockaddr *peeraddr, int peeraddrlen,
|
|
proxy_conn_meta_ctx_t *mctx, int fd2)
|
|
// pxy_thrmgr_ctx_t *thrmgr,
|
|
// proxyspec_t *spec, opts_t *opts, int fd2)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup(): fd=%d\n", fd);
|
|
|
|
pxy_thrmgr_ctx_t *thrmgr = mctx->lctx->thrmgr;
|
|
proxyspec_t *spec = mctx->lctx->spec;
|
|
opts_t *opts = mctx->lctx->opts;
|
|
|
|
/* create per connection pair state and attach to thread */
|
|
pxy_conn_ctx_t *ctx = pxy_conn_ctx_new(spec, opts, thrmgr, fd);
|
|
if (!ctx) {
|
|
log_err_printf("Error allocating memory\n");
|
|
evutil_closesocket(fd);
|
|
return NULL;
|
|
}
|
|
|
|
ctx->mctx = mctx;
|
|
// Not to close the connection during initialization
|
|
ctx->initialized = 0;
|
|
|
|
ctx->af = peeraddr->sa_family;
|
|
|
|
/* determine original destination of connection */
|
|
if (spec->natlookup) {
|
|
/* NAT engine lookup */
|
|
ctx->addrlen = sizeof(struct sockaddr_storage);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup() natlookup\n");
|
|
if (spec->natlookup((struct sockaddr *)&ctx->addr, &ctx->addrlen,
|
|
fd, peeraddr, peeraddrlen) == -1) {
|
|
char *cbuf = NULL;
|
|
char *chbuf, *cpbuf;
|
|
|
|
sys_sockipport_str(peeraddr, peeraddrlen, &chbuf, &cpbuf);
|
|
if (asprintf(&cbuf, "\naddr= [%s]:%s", chbuf, cpbuf) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
log_err_printf("Connection not found in NAT "
|
|
"state table, aborting connection: %s\n", cbuf);
|
|
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return NULL;
|
|
}
|
|
} else if (spec->connect_addrlen > 0) {
|
|
/* static forwarding */
|
|
ctx->addrlen = spec->connect_addrlen;
|
|
memcpy(&ctx->addr, &spec->connect_addr, ctx->addrlen);
|
|
} else {
|
|
/* SNI mode */
|
|
if (!ctx->spec->ssl) {
|
|
/* if this happens, the proxyspec parser is broken */
|
|
log_err_printf("SNI mode used for non-SSL connection; "
|
|
"aborting connection\n");
|
|
evutil_closesocket(fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup() pxy_fd_readcb\n");
|
|
// pxy_fd_readcb(fd, 0, ctx);
|
|
/* for SSL, defer dst connection setup to initial_readcb */
|
|
if (ctx->spec->ssl) {
|
|
ctx->ev = event_new(ctx->evbase, fd, EV_READ, pxy_fd_readcb, ctx);
|
|
// if (!ctx->ev)
|
|
// goto memout;
|
|
event_add(ctx->ev, NULL);
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup() pxy_fd_readcb\n");
|
|
pxy_fd_readcb(fd, 0, ctx);
|
|
}
|
|
|
|
if (!ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>> pxy_conn_setup: NULL CTX\n");
|
|
}
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> EXIT pxy_conn_setup()\n");
|
|
return ctx;
|
|
}
|
|
|
|
void
|
|
pxy_conn_setup_e2(evutil_socket_t fd,
|
|
// struct sockaddr *peeraddr, int peeraddrlen,
|
|
proxy_conn_meta_ctx_t *mctx)
|
|
// pxy_thrmgr_ctx_t *thrmgr,
|
|
// proxyspec_t *spec, opts_t *opts, proxy_conn_meta_ctx_t *mctx)
|
|
{
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: ENTER fd=%d\n", fd);
|
|
|
|
pxy_thrmgr_ctx_t *thrmgr = mctx->lctx->thrmgr;
|
|
proxyspec_t *spec = mctx->lctx->spec;
|
|
opts_t *opts = mctx->lctx->opts;
|
|
|
|
pxy_conn_ctx_t *parent_ctx = mctx->parent_ctx;
|
|
int pfd = -1;
|
|
if (!parent_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>> pxy_conn_setup_e2: NULL parent_ctx <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< GONE\n");
|
|
goto leave;
|
|
}
|
|
|
|
pfd = parent_ctx->fd;
|
|
|
|
pxy_conn_ctx_t *ctx = pxy_conn_ctx_new(spec, opts, thrmgr, fd);
|
|
if (!ctx) {
|
|
log_err_printf("Error allocating memory\n");
|
|
evutil_closesocket(fd);
|
|
goto leave;
|
|
}
|
|
|
|
ctx->mctx = mctx;
|
|
ctx->child_ctx = NULL;
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: pxy_bufferevent_setup_e2 for dst.bev, fd=%d\n", fd);
|
|
// ctx->dst.bev = pxy_bufferevent_setup_e2(ctx, -1, parent_ctx->dst.ssl);
|
|
|
|
if (ctx->spec->ssl && !ctx->passthrough) {
|
|
ctx->dst.ssl = pxy_dstssl_create(ctx);
|
|
if (!ctx->dst.ssl) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>> pxy_conn_setup_e2: ctx->dst.ssl NULL, fd=%d\n", fd);
|
|
log_err_printf("Error creating SSL\n");
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_connect: pxy_bufferevent_setup for dst fd=%d\n", ctx->fd);
|
|
// ctx->dst.bev = pxy_bufferevent_setup(ctx, -1, ctx->dst.ssl);
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: pxy_bufferevent_setup_e2 for dst.bev, fd=%d\n", fd);
|
|
ctx->dst.bev = pxy_bufferevent_setup_e2(ctx, -1, ctx->dst.ssl);
|
|
if (!ctx->dst.bev) {
|
|
if (ctx->dst.ssl) {
|
|
SSL_free(ctx->dst.ssl);
|
|
ctx->dst.ssl = NULL;
|
|
}
|
|
evutil_closesocket(ctx->fd);
|
|
pxy_conn_ctx_free(ctx);
|
|
return;
|
|
}
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< bufferevent_enable(ctx->dst.bev)\n");
|
|
bufferevent_enable(ctx->dst.bev, EV_READ|EV_WRITE);
|
|
|
|
/* initiate connection */
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: bufferevent_socket_connect dst.bev\n");
|
|
bufferevent_socket_connect(ctx->dst.bev, (struct sockaddr *)&parent_ctx->addr, parent_ctx->addrlen);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: pxy_bufferevent_setup_e2 for e2dst.bev, fd=%d\n", fd);
|
|
ctx->e2dst.bev = pxy_bufferevent_setup_e2(ctx, fd, ctx->e2dst.ssl);
|
|
|
|
if (!parent_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>> pxy_conn_setup_e2: parent_ctx NULL >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fd=%d\n", fd);
|
|
} else if (!mctx->child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: parent_ctx->child_ctx NULL >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fd=%d\n", fd);
|
|
}
|
|
|
|
// Handle first child, if the last child is deleted, the child_ctx becomes null again
|
|
if (!parent_ctx->initialized) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: parent_ctx->e2dst FIRST CHILD >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> INITIALIZED\n");
|
|
parent_ctx->initialized = 1;
|
|
} else {
|
|
if (mctx->child_ctx) {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINE, ">>>>> pxy_conn_setup_e2: parent_ctx->e2dst NEW CHILD >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> prev CHILD EXISTS\n");
|
|
} else {
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: parent_ctx->e2dst NEW CHILD >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fd=%d, NO PREV CHILD\n", fd);
|
|
}
|
|
|
|
ctx->child_ctx = mctx->child_ctx;
|
|
}
|
|
|
|
mctx->child_ctx = ctx;
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: set callbacks for dst.bev\n");
|
|
bufferevent_setcb(ctx->dst.bev, pxy_bev_readcb_e2, pxy_bev_writecb_e2, pxy_bev_eventcb_e2, ctx);
|
|
// bufferevent_enable(ctx->dst.bev, EV_READ|EV_WRITE);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: set callbacks for e2dst.bev\n");
|
|
bufferevent_setcb(ctx->e2dst.bev, pxy_bev_readcb_e2, pxy_bev_writecb_e2, pxy_bev_eventcb_e2, ctx);
|
|
|
|
// @todo Do we need a watermark?
|
|
//bufferevent_setwatermark(ctx->e2dst.bev, EV_READ, 200, OUTBUF_LIMIT);
|
|
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2: enable callbacks\n");
|
|
bufferevent_enable(ctx->dst.bev, EV_READ|EV_WRITE);
|
|
bufferevent_enable(ctx->e2dst.bev, EV_READ|EV_WRITE);
|
|
|
|
leave:
|
|
log_dbg_level_printf(LOG_DBG_MODE_FINEST, ">>>>> pxy_conn_setup_e2(): EXIT fd=%d, parent fd=%d\n", fd, pfd);
|
|
}
|
|
/* vim: set noet ft=c: */
|