annotate src/mail/ngx_mail_imap_module.h @ 6982:ac9b1df5b246

SSL: disabled renegotiation detection in client mode. CVE-2009-3555 is no longer relevant and mitigated by the renegotiation info extension (secure renegotiation). On the other hand, unexpected renegotiation still introduces potential security risks, and hence we do not allow renegotiation on the server side, as we never request renegotiation. On the client side the situation is different though. There are backends which explicitly request renegotiation, and disabled renegotiation introduces interoperability problems. This change allows renegotiation on the client side, and fixes interoperability problems as observed with such backends (ticket #872). Additionally, with TLSv1.3 the SSL_CB_HANDSHAKE_START flag is currently set by OpenSSL when receiving a NewSessionTicket message, and was detected by nginx as a renegotiation attempt. This looks like a bug in OpenSSL, though this change also allows better interoperability till the problem is fixed.
author Sergey Kandaurov <pluknet@nginx.com>
date Tue, 18 Apr 2017 16:08:44 +0300
parents d620f497c50f
children
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2 /*
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3 * Copyright (C) Igor Sysoev
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Maxim Konovalov <maxim@nginx.com>
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_MAIL_IMAP_MODULE_H_INCLUDED_
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9 #define _NGX_MAIL_IMAP_MODULE_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_mail.h>
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17 typedef struct {
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18 size_t client_buffer_size;
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20 ngx_str_t capability;
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21 ngx_str_t starttls_capability;
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22 ngx_str_t starttls_only_capability;
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24 ngx_uint_t auth_methods;
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26 ngx_array_t capabilities;
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27 } ngx_mail_imap_srv_conf_t;
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30 void ngx_mail_imap_init_session(ngx_mail_session_t *s, ngx_connection_t *c);
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31 void ngx_mail_imap_init_protocol(ngx_event_t *rev);
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32 void ngx_mail_imap_auth_state(ngx_event_t *rev);
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33 ngx_int_t ngx_mail_imap_parse_command(ngx_mail_session_t *s);
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36 extern ngx_module_t ngx_mail_imap_module;
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39 #endif /* _NGX_MAIL_IMAP_MODULE_H_INCLUDED_ */