mirror of
https://github.com/sonertari/SSLproxy
synced 2024-11-19 21:25:28 +00:00
247 lines
7.1 KiB
C
247 lines
7.1 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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#ifndef PXYCONN_H
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#define PXYCONN_H
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#include "proxy.h"
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#include "opts.h"
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#include "attrib.h"
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#include "pxythrmgr.h"
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#include "log.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <event2/event.h>
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#include <event2/util.h>
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typedef struct pxy_conn_child_ctx pxy_conn_child_ctx_t;
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/* single socket bufferevent descriptor */
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typedef struct pxy_conn_desc {
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struct bufferevent *bev;
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SSL *ssl;
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unsigned int closed : 1;
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} pxy_conn_desc_t;
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/* parent connection state consisting of three connection descriptors,
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* connection-wide state and the specs and options */
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struct pxy_conn_ctx {
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// Common properties
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// @attention The order of these common vars should match with their order in children
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/* per-connection state */
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struct pxy_conn_desc src;
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struct pxy_conn_desc dst;
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/* status flags */
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unsigned int connected : 1; /* 0 until both ends are connected */
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unsigned int enomem : 1; /* 1 if out of memory */
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/* http */
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unsigned int seen_req_header : 1; /* 0 until request header complete */
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unsigned int seen_resp_header : 1; /* 0 until response hdr complete */
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unsigned int sent_http_conn_close : 1; /* 0 until Conn: close sent */
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unsigned int ocsp_denied : 1; /* 1 if OCSP was denied */
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/* log strings from socket */
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char *srchost_str;
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char *srcport_str;
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char *dsthost_str;
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char *dstport_str;
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/* log strings from HTTP request */
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char *http_method;
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char *http_uri;
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char *http_host;
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char *http_content_type;
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/* log strings from HTTP response */
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char *http_status_code;
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char *http_status_text;
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char *http_content_length;
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/* log strings related to SSL */
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char *ssl_names;
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char *origcrtfpr;
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char *usedcrtfpr;
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/* store fd and fd event while connected is 0 */
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evutil_socket_t fd;
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// End of common properties
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/* content log context */
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log_content_ctx_t *logctx;
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unsigned int srv_dst_connected : 1; /* 0 until server is connected */
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unsigned int dst_connected : 1; /* 0 until dst is connected */
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/* ssl */
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unsigned int sni_peek_retries : 6; /* max 64 SNI parse retries */
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unsigned int immutable_cert : 1; /* 1 if the cert cannot be changed */
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unsigned int generated_cert : 1; /* 1 if we generated a new cert */
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unsigned int passthrough : 1; /* 1 if SSL passthrough is active */
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/* autossl */
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unsigned int clienthello_search : 1; /* 1 if waiting for hello */
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unsigned int clienthello_found : 1; /* 1 if conn upgrade to SSL */
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struct pxy_conn_desc srv_dst;
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char *srv_dst_ssl_version;
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char *srv_dst_ssl_cipher;
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struct event *ev;
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/* original destination address, family and certificate */
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struct sockaddr_storage addr;
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socklen_t addrlen;
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int af;
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X509 *origcrt;
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// Thread that the conn is attached to
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pxy_thr_ctx_t *thr;
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// Unique id of the conn
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uuid_t *uuid;
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pxy_thrmgr_ctx_t *thrmgr;
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proxyspec_t *spec;
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opts_t *opts;
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struct event_base *evbase;
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struct evdns_base *dnsbase;
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evutil_socket_t dst_fd;
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evutil_socket_t srv_dst_fd;
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// Priv sep socket to obtain a socket for children
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evutil_socket_t clisock;
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// Fd of the listener event for the children
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evutil_socket_t child_fd;
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struct evconnlistener *child_evcl;
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// SSL proxy return address: The IP:port address the children are listening to
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char *child_addr_str;
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char *src_addr_str;
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char *dst_addr_str;
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int sent_addr_info;
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// Child list of the conn
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pxy_conn_child_ctx_t *children;
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// Number of children, active or closed
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unsigned int child_count;
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evutil_socket_t child_src_fd;
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evutil_socket_t child_dst_fd;
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/* server name indicated by client in SNI TLS extension */
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char *sni;
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// Conn create time
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time_t ctime;
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// Conn last access time, to determine expired conns
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// Updated on entry to callback functions, parent or child
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time_t atime;
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// Per-thread conn list
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pxy_conn_ctx_t *next;
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// Expired conns are link-listed using this pointer
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pxy_conn_ctx_t *next_expired;
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#ifdef HAVE_LOCAL_PROCINFO
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/* local process information */
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pxy_conn_lproc_desc_t lproc;
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#endif /* HAVE_LOCAL_PROCINFO */
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};
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/* child connection state consisting of two connection descriptors,
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* connection-wide state */
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struct pxy_conn_child_ctx {
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// Common properties
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// @attention The order of these common vars should match with their order in parent
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/* per-connection state */
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struct pxy_conn_desc src;
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struct pxy_conn_desc dst;
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/* status flags */
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unsigned int connected : 1; /* 0 until both ends are connected */
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unsigned int enomem : 1; /* 1 if out of memory */
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/* http */
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unsigned int seen_req_header : 1; /* 0 until request header complete */
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unsigned int seen_resp_header : 1; /* 0 until response hdr complete */
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unsigned int sent_http_conn_close : 1; /* 0 until Conn: close sent */
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unsigned int ocsp_denied : 1; /* 1 if OCSP was denied */
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/* log strings from socket */
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char *srchost_str;
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char *srcport_str;
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char *dsthost_str;
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char *dstport_str;
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/* log strings from HTTP request */
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char *http_method;
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char *http_uri;
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char *http_host;
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char *http_content_type;
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/* log strings from HTTP response */
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char *http_status_code;
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char *http_status_text;
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char *http_content_length;
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/* log strings related to SSL */
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char *ssl_names;
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char *origcrtfpr;
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char *usedcrtfpr;
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/* store fd and fd event while connected is 0 */
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evutil_socket_t fd;
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// End of common properties
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evutil_socket_t src_fd;
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evutil_socket_t dst_fd;
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pxy_conn_ctx_t *parent;
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// Child index
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unsigned int idx;
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// Children of the conn are link-listed using this pointer
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pxy_conn_child_ctx_t *next;
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};
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void pxy_conn_setup(evutil_socket_t, struct sockaddr *, int,
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pxy_thrmgr_ctx_t *, proxyspec_t *, opts_t *,
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evutil_socket_t)
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NONNULL(2,4,5,6);
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void pxy_conn_free(pxy_conn_ctx_t *ctx, int) NONNULL(1);
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#endif /* !PXYCONN_H */
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/* vim: set noet ft=c: */
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