7e5a773aa6
+ bring over lint fixes from the version in othersrc + document the concat, comb4p, xor and hash combiner functions
99 lines
4.1 KiB
C
99 lines
4.1 KiB
C
/*-
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* Copyright (c) 2014,2015 Alistair Crooks <agc@NetBSD.org>
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* All rights reserved.
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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 MULTIGEST_H_
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#define MULTIGEST_H_ 20150211
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#include <sys/types.h>
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#include <inttypes.h>
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typedef void (*mg_initfunc_t)(void *);
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typedef void (*mg_updatefunc_t)(void *, const void *, unsigned);
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typedef void (*mg_finalfunc_t)(uint8_t *, void *);
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#define MG_MAX_DIG 32
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/* a single digest struct */
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typedef struct multigest_dig_t {
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char *alg; /* digest name */
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size_t ctxoff; /* offset in context */
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size_t rawsize; /* length of raw output */
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mg_updatefunc_t update; /* digest update function */
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mg_finalfunc_t final; /* final update function */
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} multigest_dig_t;
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/* a multiple digest struct */
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typedef struct multigest_t {
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void *r; /* regular expression for matching */
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char *pat; /* pattern we match */
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char *repl; /* replacement text */
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unsigned repllen; /* cached length of replacement */
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char *type; /* digest type */
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size_t rawsize; /* raw size of output digest */
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size_t ctxsize; /* allocated size of contexts */
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uint8_t *ctx; /* digest contexts */
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uint32_t digc; /* # of digests */
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multigest_dig_t digs[MG_MAX_DIG]; /* digest algorithms being used */
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uint32_t combiner; /* when finalising, combination algorithm */
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size_t outsize; /* output size of digest - combiners may change this */
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} multigest_t;
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#ifndef __BEGIN_DECLS
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# if defined(__cplusplus)
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# define __BEGIN_DECLS extern "C" {
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# define __END_DECLS }
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# else
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# define __BEGIN_DECLS
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# define __END_DECLS
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# endif
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#endif
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__BEGIN_DECLS
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/* new and free */
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multigest_t *multigest_new(void);
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void multigest_free(multigest_t */*s*/);
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/* low-level interface */
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int multigest_init(multigest_t */*multigest*/, const char */*alg*/);
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int multigest_add_subst(multigest_t */*multigest*/, const char */*from*/, const char */*to*/);
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void multigest_update(multigest_t */*multigest*/, const void */*data*/, size_t /*len*/);
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void multigest_final(multigest_t */*multigest*/, uint8_t */*raw*/);
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uint32_t multigest_get_rawsize(multigest_t */*multigest*/);
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/* high-level interface */
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uint8_t *multigest_data(const char */*alg*/, const void */*data*/, size_t /*size*/, uint8_t */*raw*/, const char */*pat*/, const char */*repl*/);
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uint8_t *multigest_file(const char */*alg*/, const char */*f*/, uint8_t */*raw*/, const char */*pat*/, const char */*repl*/);
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uint32_t multigest_algs_rawsize(const char */*algs*/);
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/* output */
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void multigest_unpcstring(const char */*in*/, size_t /*isize*/, char */*out*/, size_t /*osize*/);
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int multigest_format_hex(uint8_t */*raw*/, const char */*algname*/, char */*out*/, size_t /*size*/);
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int multigest_print_hex(uint8_t */*raw*/, const char */*algname*/, const char */*outname*/, const char */*f*/, const char */*sub*/, const char */*sep*/, const char */*format*/);
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char *multigest_format_raw(const uint8_t */*in*/, size_t /*insize*/, char */*out*/, size_t /*outsize*/);
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__END_DECLS
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#endif
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