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/* See LICENSE file for copyright and license details. */
#include "common.h"
enum command
getcommand(const char **name_out, enum libhashsum_algorithm *algorithm_out)
{
const char *name, *p;
name = strrchr(argv0, '/');
name = name ? &name[1] : argv0;
if (strstarts(name, "anysum")) {
name = &name[6];
while (isdigit(*name) || *name == '.' || *name == '_')
name++;
if (*name++ != '-')
return ANYSUM;
}
if (strcasestarts(name, "sha")) {
p = &name[3];
if (*p == '-')
p++;
if (*p++ == '3') {
if (!*p || !strcasecmp(p, "sum")) {
*algorithm_out = LIBHASHSUM_SHA3_224;
return SHA3SUM;
}
}
}
p = name;
if (*p != 'b' && *p != 'B')
goto specialised;
if (!strncasecmp(++p, "lake", 4))
p = &p[4];
if (*p && strcasecmp(p, "sum"))
goto specialised;
*name_out = "blake224";
*algorithm_out = LIBHASHSUM_BLAKE224;
return BSUM;
specialised:
if (!libhashsum_get_algorithm_string(algorithm_out, name))
eprintf("invalid command name, is not \"anysum\" and "
"does not match any known hash function");
if (strchr(name, '['))
eprintf("invalid command name, cannot contain parameters");
*name_out = name;
return SPECIALISED;
}
enum command
getsupercommand(enum command cmd, enum libhashsum_algorithm algo)
{
if (cmd != SPECIALISED)
return cmd;
switch (algo) {
case LIBHASHSUM_MD2:
case LIBHASHSUM_MD4:
case LIBHASHSUM_MD5:
case LIBHASHSUM_RIPEMD_128:
case LIBHASHSUM_RIPEMD_160:
case LIBHASHSUM_RIPEMD_256:
case LIBHASHSUM_RIPEMD_320:
case LIBHASHSUM_SHA0:
case LIBHASHSUM_SHA1:
case LIBHASHSUM_SHA_224:
case LIBHASHSUM_SHA_256:
case LIBHASHSUM_SHA_384:
case LIBHASHSUM_SHA_512:
case LIBHASHSUM_SHA_512_224:
case LIBHASHSUM_SHA_512_256:
return SPECIALISED;
case LIBHASHSUM_KECCAK:
case LIBHASHSUM_KECCAK_224:
case LIBHASHSUM_KECCAK_256:
case LIBHASHSUM_KECCAK_384:
case LIBHASHSUM_KECCAK_512:
case LIBHASHSUM_SHA3_224:
case LIBHASHSUM_SHA3_256:
case LIBHASHSUM_SHA3_384:
case LIBHASHSUM_SHA3_512:
case LIBHASHSUM_SHAKE128:
case LIBHASHSUM_SHAKE256:
case LIBHASHSUM_SHAKE512:
case LIBHASHSUM_RAWSHAKE128:
case LIBHASHSUM_RAWSHAKE256:
case LIBHASHSUM_RAWSHAKE512:
return SHA3SUM;
case LIBHASHSUM_BLAKE224:
case LIBHASHSUM_BLAKE256:
case LIBHASHSUM_BLAKE384:
case LIBHASHSUM_BLAKE512:
return BSUM;
default:
eprintf("algorithm not recognised");
}
}
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