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108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/*
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* Secure eXtended Message Passing framework
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* Secure eXtended Transport layer implementation: (libsxt)
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* - very similar to SSH2/TLS
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* - using already proven and tested crypto algos
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* - better than TLS for message passing
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*
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* General sxt API and structures
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*
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* (c) Alexander Vdolainen 2016 <avdolainen@zoho.com>
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*
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* libsxmp is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* libsxmp is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.";
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*
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*/
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#ifndef __SXT_SXT_H__
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#define __SXT_SXT_H__
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#define SXT_AUTH_PASSWORD (1 << 1)
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#define SXT_AUTH_PEERKEY (1 << 2)
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#define SXT_AUTH_PEERHASH (1 << 3)
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#define SXTPROTO_VERSION 1
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#define SXTBEER_TYPE "lager"
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typedef struct __sxtlink_type {
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uint64_t unuuid;
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uint8_t unique[16];
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uint8_t state;
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/* sets keys */
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sxtkey_t *pubkey;
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sxtkey_t *privkey;
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/* peer stuff */
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ndbuf_t *loginpass_pair;
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sxtkey_t *peer_pubkey;
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/* socket */
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sxtsocket_t *socket;
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void *priv;
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} sxtlink_t;
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typedef struct __sxtset_type {
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/* flags for authentification */
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uint8_t auth_types;
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/* timeouts in secs */
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uint32_t session_tm; /* timeout for session i.e. secs to forget about session while socket io error */
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uint32_t session_lt; /* session life time i.e. when session will be closed, 0 if infinite */
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sxtkey_t *pubkey;
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sxtkey_t *privkey;
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/* authentification ops */
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struct {
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int (*auth_loginpass_pair)(sxtlink_t *, void *);
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int (*auth_key_peer)(sxtlink_t *, void *);
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} auth_ops;
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/* options */
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uint64_t hash;
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const char *strctx;
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void *priv;
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} sxtset_t;
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typedef struct __sxtsession_type {
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uint8_t unique[16];
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uint8_t state;
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sxtlink_t *link;
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sxtset_t *linkset;
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int sxt_version;
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uint64_t peer_swhash;
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sxtsafebuffer_t *peerbeer;
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/* stats */
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uint64_t rcv_pck;
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uint64_t snd_pck;
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} sxtsession_t;
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int sxt_init(void);
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int sxt_finish(void);
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int sxt_reseed(void);
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/* plain text beer exchange :) */
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int sxt_scanbeer(sxtsession_t *, const char *, size_t);
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int sxt_genbeer(sxtsession_t *, sxtsafebuffer_t *);
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#endif /* __SXT_SXT_H__ */
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