mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-24 01:07:20 +02:00
Needed to accommodate different layout on some platforms (Debian for one). Heikki Linnakangas
212 lines
4.0 KiB
C
212 lines
4.0 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* UUID generation functions using the OSSP UUID library
|
|
*
|
|
* Copyright (c) 2007 PostgreSQL Global Development Group
|
|
*
|
|
* $PostgreSQL: pgsql/contrib/uuid-ossp/uuid-ossp.c,v 1.3 2007/10/23 21:38:16 tgl Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
#include "fmgr.h"
|
|
#include "utils/builtins.h"
|
|
#include "utils/uuid.h"
|
|
|
|
/*
|
|
* There's some confusion over the location of the uuid.h header file.
|
|
* On Debian, it's installed as ossp/uuid.h, while on Fedora, or if you
|
|
* install ossp-uuid from a tarball, it's installed as uuid.h. Don't know
|
|
* what other systems do.
|
|
*/
|
|
#ifdef HAVE_OSSP_UUID_H
|
|
#include <ossp/uuid.h>
|
|
#else
|
|
#ifdef HAVE_UUID_H
|
|
#include <uuid.h>
|
|
#else
|
|
#error OSSP uuid.h not found
|
|
#endif
|
|
#endif
|
|
|
|
/* better both be 16 */
|
|
#if (UUID_LEN != UUID_LEN_BIN)
|
|
#error UUID length mismatch
|
|
#endif
|
|
|
|
|
|
PG_MODULE_MAGIC;
|
|
|
|
|
|
Datum uuid_nil(PG_FUNCTION_ARGS);
|
|
Datum uuid_ns_dns(PG_FUNCTION_ARGS);
|
|
Datum uuid_ns_url(PG_FUNCTION_ARGS);
|
|
Datum uuid_ns_oid(PG_FUNCTION_ARGS);
|
|
Datum uuid_ns_x500(PG_FUNCTION_ARGS);
|
|
|
|
Datum uuid_generate_v1(PG_FUNCTION_ARGS);
|
|
Datum uuid_generate_v1mc(PG_FUNCTION_ARGS);
|
|
Datum uuid_generate_v3(PG_FUNCTION_ARGS);
|
|
Datum uuid_generate_v4(PG_FUNCTION_ARGS);
|
|
Datum uuid_generate_v5(PG_FUNCTION_ARGS);
|
|
|
|
|
|
PG_FUNCTION_INFO_V1(uuid_nil);
|
|
PG_FUNCTION_INFO_V1(uuid_ns_dns);
|
|
PG_FUNCTION_INFO_V1(uuid_ns_url);
|
|
PG_FUNCTION_INFO_V1(uuid_ns_oid);
|
|
PG_FUNCTION_INFO_V1(uuid_ns_x500);
|
|
|
|
PG_FUNCTION_INFO_V1(uuid_generate_v1);
|
|
PG_FUNCTION_INFO_V1(uuid_generate_v1mc);
|
|
PG_FUNCTION_INFO_V1(uuid_generate_v3);
|
|
PG_FUNCTION_INFO_V1(uuid_generate_v4);
|
|
PG_FUNCTION_INFO_V1(uuid_generate_v5);
|
|
|
|
|
|
static char *
|
|
uuid_to_string(const uuid_t *uuid)
|
|
{
|
|
char *buf = palloc(UUID_LEN_STR + 1);
|
|
void *ptr = buf;
|
|
size_t len = UUID_LEN_STR + 1;
|
|
|
|
uuid_export(uuid, UUID_FMT_STR, &ptr, &len);
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
static void
|
|
string_to_uuid(const char *str, uuid_t *uuid)
|
|
{
|
|
uuid_import(uuid, UUID_FMT_STR, str, UUID_LEN_STR + 1);
|
|
}
|
|
|
|
|
|
static Datum
|
|
special_uuid_value(const char *name)
|
|
{
|
|
uuid_t *uuid;
|
|
char *str;
|
|
|
|
uuid_create(&uuid);
|
|
uuid_load(uuid, name);
|
|
str = uuid_to_string(uuid);
|
|
uuid_destroy(uuid);
|
|
|
|
return DirectFunctionCall1(uuid_in, CStringGetDatum(str));
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_nil(PG_FUNCTION_ARGS)
|
|
{
|
|
return special_uuid_value("nil");
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_ns_dns(PG_FUNCTION_ARGS)
|
|
{
|
|
return special_uuid_value("ns:DNS");
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_ns_url(PG_FUNCTION_ARGS)
|
|
{
|
|
return special_uuid_value("ns:URL");
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_ns_oid(PG_FUNCTION_ARGS)
|
|
{
|
|
return special_uuid_value("ns:OID");
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_ns_x500(PG_FUNCTION_ARGS)
|
|
{
|
|
return special_uuid_value("ns:X500");
|
|
}
|
|
|
|
|
|
static Datum
|
|
uuid_generate_internal(int mode, const uuid_t *ns, const char *name)
|
|
{
|
|
uuid_t *uuid;
|
|
char *str;
|
|
|
|
uuid_create(&uuid);
|
|
uuid_make(uuid, mode, ns, name);
|
|
str = uuid_to_string(uuid);
|
|
uuid_destroy(uuid);
|
|
|
|
return DirectFunctionCall1(uuid_in, CStringGetDatum(str));
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_generate_v1(PG_FUNCTION_ARGS)
|
|
{
|
|
return uuid_generate_internal(UUID_MAKE_V1, NULL, NULL);
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_generate_v1mc(PG_FUNCTION_ARGS)
|
|
{
|
|
return uuid_generate_internal(UUID_MAKE_V1 | UUID_MAKE_MC, NULL, NULL);
|
|
}
|
|
|
|
|
|
static Datum
|
|
uuid_generate_v35_internal(int mode, pg_uuid_t *ns, text *name)
|
|
{
|
|
uuid_t *ns_uuid;
|
|
Datum result;
|
|
|
|
uuid_create(&ns_uuid);
|
|
string_to_uuid(DatumGetCString(DirectFunctionCall1(uuid_out, UUIDPGetDatum(ns))),
|
|
ns_uuid);
|
|
|
|
result = uuid_generate_internal(mode,
|
|
ns_uuid,
|
|
DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(name))));
|
|
|
|
uuid_destroy(ns_uuid);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_generate_v3(PG_FUNCTION_ARGS)
|
|
{
|
|
pg_uuid_t *ns = PG_GETARG_UUID_P(0);
|
|
text *name = PG_GETARG_TEXT_P(1);
|
|
|
|
return uuid_generate_v35_internal(UUID_MAKE_V3, ns, name);
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_generate_v4(PG_FUNCTION_ARGS)
|
|
{
|
|
return uuid_generate_internal(UUID_MAKE_V4, NULL, NULL);
|
|
}
|
|
|
|
|
|
Datum
|
|
uuid_generate_v5(PG_FUNCTION_ARGS)
|
|
{
|
|
pg_uuid_t *ns = PG_GETARG_UUID_P(0);
|
|
text *name = PG_GETARG_TEXT_P(1);
|
|
|
|
return uuid_generate_v35_internal(UUID_MAKE_V5, ns, name);
|
|
}
|