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https://github.com/servalproject/serval-dna.git
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c35af0617a
- make "debug.h" a private header so that the DEBUG() macro does not interfere with Xcode Debug builds, which set DEBUG=1 - move all #include "debug.h" from headers into .c files - move 'struct idebug' into a new public header "idebug.h" so that "log.h" can be public - move HTTPD port number defs from "httpd.h" to "constants.h", so that "httpd.h" can be private and "conf.h" can be public - add missing nested includes so each header compiles stand-alone without error - #include "sodium.h" instead of <sodium.h> - #include "sqlite3.h" instead of <sqlite3.h> - add header guard to "fifo.h" - fix header guard in "sync_keys.h"
49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
#ifndef __SERVAL_DNA__SYNC_H
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#define __SERVAL_DNA__SYNC_H
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#include <stdint.h> // for uint8_t
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#include "str.h" // for alloca_tohex()
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/*
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Synchronize two sets of keys, which are likely to contain many common values
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*/
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#define KEY_LEN 8
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#define PREFIX_STEP_BITS 1
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#define SYNC_MAX_RETRIES 1
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typedef struct {
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uint8_t key[KEY_LEN];
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}sync_key_t;
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#define alloca_sync_key(K) alloca_tohex((K)->key, KEY_LEN)
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struct sync_state;
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typedef void (*peer_has) (void *context, void *peer_context, const sync_key_t *key);
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typedef void (*peer_does_not_have) (void *context, void *peer_context, void *key_context, const sync_key_t *key);
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typedef void (*peer_now_has) (void *context, void *peer_context, void *key_context, const sync_key_t *key);
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struct sync_state* sync_alloc_state(void *context, peer_has has, peer_does_not_have has_not, peer_now_has now_has);
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void sync_free_state(struct sync_state *state);
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// throw away all state related to peer
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void sync_free_peer_state(struct sync_state *state, void *peer_context);
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// tell the sync process that we now have key, with callback context
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// if the key is already present, the context will be updated
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void sync_add_key(struct sync_state *state, const sync_key_t *key, void *key_context);
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int sync_key_exists(const struct sync_state *state, const sync_key_t *key);
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int sync_has_transmit_queued(const struct sync_state *state);
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// ask for a message to be inserted into buff, returns packet length
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size_t sync_build_message(struct sync_state *state, uint8_t *buff, size_t len);
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// process a message received from a peer.
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int sync_recv_message(struct sync_state *state, void *peer_context, const uint8_t *buff, size_t len);
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void sync_enum_differences(struct sync_state *state,
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void (*callback)(void *context, void *peer_context, const sync_key_t *key, uint8_t theirs));
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#endif // __SERVAL_DNA__SYNC_H
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