mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-27 08:39:28 +08:00
7e735035f2
The basic rule we follow here is to always first include 'postgres.h' or 'postgres_fe.h' whichever is applicable, then system header includes and then Postgres header includes. In this, we also follow that all the Postgres header includes are in order based on their ASCII value. We generally follow these rules, but the code has deviated in many places. This commit makes it consistent just for contrib modules. The later commits will enforce similar rules in other parts of code. Author: Vignesh C Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/CALDaNm2Sznv8RR6Ex-iJO6xAdsxgWhCoETkaYX=+9DW3q0QCfA@mail.gmail.com
476 lines
11 KiB
C
476 lines
11 KiB
C
/*
|
|
* pgcrypto.c
|
|
* Various cryptographic stuff for PostgreSQL.
|
|
*
|
|
* Copyright (c) 2001 Marko Kreen
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* contrib/pgcrypto/pgcrypto.c
|
|
*/
|
|
|
|
#include "postgres.h"
|
|
|
|
#include <ctype.h>
|
|
|
|
#include "parser/scansup.h"
|
|
#include "pgcrypto.h"
|
|
#include "px-crypt.h"
|
|
#include "px.h"
|
|
#include "utils/builtins.h"
|
|
#include "utils/uuid.h"
|
|
|
|
PG_MODULE_MAGIC;
|
|
|
|
/* private stuff */
|
|
|
|
typedef int (*PFN) (const char *name, void **res);
|
|
static void *find_provider(text *name, PFN pf, const char *desc, int silent);
|
|
|
|
/* SQL function: hash(bytea, text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_digest);
|
|
|
|
Datum
|
|
pg_digest(PG_FUNCTION_ARGS)
|
|
{
|
|
bytea *arg;
|
|
text *name;
|
|
unsigned len,
|
|
hlen;
|
|
PX_MD *md;
|
|
bytea *res;
|
|
|
|
name = PG_GETARG_TEXT_PP(1);
|
|
|
|
/* will give error if fails */
|
|
md = find_provider(name, (PFN) px_find_digest, "Digest", 0);
|
|
|
|
hlen = px_md_result_size(md);
|
|
|
|
res = (text *) palloc(hlen + VARHDRSZ);
|
|
SET_VARSIZE(res, hlen + VARHDRSZ);
|
|
|
|
arg = PG_GETARG_BYTEA_PP(0);
|
|
len = VARSIZE_ANY_EXHDR(arg);
|
|
|
|
px_md_update(md, (uint8 *) VARDATA_ANY(arg), len);
|
|
px_md_finish(md, (uint8 *) VARDATA(res));
|
|
px_md_free(md);
|
|
|
|
PG_FREE_IF_COPY(arg, 0);
|
|
PG_FREE_IF_COPY(name, 1);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: hmac(data:bytea, key:bytea, type:text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_hmac);
|
|
|
|
Datum
|
|
pg_hmac(PG_FUNCTION_ARGS)
|
|
{
|
|
bytea *arg;
|
|
bytea *key;
|
|
text *name;
|
|
unsigned len,
|
|
hlen,
|
|
klen;
|
|
PX_HMAC *h;
|
|
bytea *res;
|
|
|
|
name = PG_GETARG_TEXT_PP(2);
|
|
|
|
/* will give error if fails */
|
|
h = find_provider(name, (PFN) px_find_hmac, "HMAC", 0);
|
|
|
|
hlen = px_hmac_result_size(h);
|
|
|
|
res = (text *) palloc(hlen + VARHDRSZ);
|
|
SET_VARSIZE(res, hlen + VARHDRSZ);
|
|
|
|
arg = PG_GETARG_BYTEA_PP(0);
|
|
key = PG_GETARG_BYTEA_PP(1);
|
|
len = VARSIZE_ANY_EXHDR(arg);
|
|
klen = VARSIZE_ANY_EXHDR(key);
|
|
|
|
px_hmac_init(h, (uint8 *) VARDATA_ANY(key), klen);
|
|
px_hmac_update(h, (uint8 *) VARDATA_ANY(arg), len);
|
|
px_hmac_finish(h, (uint8 *) VARDATA(res));
|
|
px_hmac_free(h);
|
|
|
|
PG_FREE_IF_COPY(arg, 0);
|
|
PG_FREE_IF_COPY(key, 1);
|
|
PG_FREE_IF_COPY(name, 2);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
|
|
/* SQL function: pg_gen_salt(text) returns text */
|
|
PG_FUNCTION_INFO_V1(pg_gen_salt);
|
|
|
|
Datum
|
|
pg_gen_salt(PG_FUNCTION_ARGS)
|
|
{
|
|
text *arg0 = PG_GETARG_TEXT_PP(0);
|
|
int len;
|
|
char buf[PX_MAX_SALT_LEN + 1];
|
|
|
|
text_to_cstring_buffer(arg0, buf, sizeof(buf));
|
|
len = px_gen_salt(buf, buf, 0);
|
|
if (len < 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("gen_salt: %s", px_strerror(len))));
|
|
|
|
PG_FREE_IF_COPY(arg0, 0);
|
|
|
|
PG_RETURN_TEXT_P(cstring_to_text_with_len(buf, len));
|
|
}
|
|
|
|
/* SQL function: pg_gen_salt(text, int4) returns text */
|
|
PG_FUNCTION_INFO_V1(pg_gen_salt_rounds);
|
|
|
|
Datum
|
|
pg_gen_salt_rounds(PG_FUNCTION_ARGS)
|
|
{
|
|
text *arg0 = PG_GETARG_TEXT_PP(0);
|
|
int rounds = PG_GETARG_INT32(1);
|
|
int len;
|
|
char buf[PX_MAX_SALT_LEN + 1];
|
|
|
|
text_to_cstring_buffer(arg0, buf, sizeof(buf));
|
|
len = px_gen_salt(buf, buf, rounds);
|
|
if (len < 0)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("gen_salt: %s", px_strerror(len))));
|
|
|
|
PG_FREE_IF_COPY(arg0, 0);
|
|
|
|
PG_RETURN_TEXT_P(cstring_to_text_with_len(buf, len));
|
|
}
|
|
|
|
/* SQL function: pg_crypt(psw:text, salt:text) returns text */
|
|
PG_FUNCTION_INFO_V1(pg_crypt);
|
|
|
|
Datum
|
|
pg_crypt(PG_FUNCTION_ARGS)
|
|
{
|
|
text *arg0 = PG_GETARG_TEXT_PP(0);
|
|
text *arg1 = PG_GETARG_TEXT_PP(1);
|
|
char *buf0,
|
|
*buf1,
|
|
*cres,
|
|
*resbuf;
|
|
text *res;
|
|
|
|
buf0 = text_to_cstring(arg0);
|
|
buf1 = text_to_cstring(arg1);
|
|
|
|
resbuf = palloc0(PX_MAX_CRYPT);
|
|
|
|
cres = px_crypt(buf0, buf1, resbuf, PX_MAX_CRYPT);
|
|
|
|
pfree(buf0);
|
|
pfree(buf1);
|
|
|
|
if (cres == NULL)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("crypt(3) returned NULL")));
|
|
|
|
res = cstring_to_text(cres);
|
|
|
|
pfree(resbuf);
|
|
|
|
PG_FREE_IF_COPY(arg0, 0);
|
|
PG_FREE_IF_COPY(arg1, 1);
|
|
|
|
PG_RETURN_TEXT_P(res);
|
|
}
|
|
|
|
/* SQL function: pg_encrypt(bytea, bytea, text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_encrypt);
|
|
|
|
Datum
|
|
pg_encrypt(PG_FUNCTION_ARGS)
|
|
{
|
|
int err;
|
|
bytea *data,
|
|
*key,
|
|
*res;
|
|
text *type;
|
|
PX_Combo *c;
|
|
unsigned dlen,
|
|
klen,
|
|
rlen;
|
|
|
|
type = PG_GETARG_TEXT_PP(2);
|
|
c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);
|
|
|
|
data = PG_GETARG_BYTEA_PP(0);
|
|
key = PG_GETARG_BYTEA_PP(1);
|
|
dlen = VARSIZE_ANY_EXHDR(data);
|
|
klen = VARSIZE_ANY_EXHDR(key);
|
|
|
|
rlen = px_combo_encrypt_len(c, dlen);
|
|
res = palloc(VARHDRSZ + rlen);
|
|
|
|
err = px_combo_init(c, (uint8 *) VARDATA_ANY(key), klen, NULL, 0);
|
|
if (!err)
|
|
err = px_combo_encrypt(c, (uint8 *) VARDATA_ANY(data), dlen,
|
|
(uint8 *) VARDATA(res), &rlen);
|
|
px_combo_free(c);
|
|
|
|
PG_FREE_IF_COPY(data, 0);
|
|
PG_FREE_IF_COPY(key, 1);
|
|
PG_FREE_IF_COPY(type, 2);
|
|
|
|
if (err)
|
|
{
|
|
pfree(res);
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("encrypt error: %s", px_strerror(err))));
|
|
}
|
|
|
|
SET_VARSIZE(res, VARHDRSZ + rlen);
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: pg_decrypt(bytea, bytea, text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_decrypt);
|
|
|
|
Datum
|
|
pg_decrypt(PG_FUNCTION_ARGS)
|
|
{
|
|
int err;
|
|
bytea *data,
|
|
*key,
|
|
*res;
|
|
text *type;
|
|
PX_Combo *c;
|
|
unsigned dlen,
|
|
klen,
|
|
rlen;
|
|
|
|
type = PG_GETARG_TEXT_PP(2);
|
|
c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);
|
|
|
|
data = PG_GETARG_BYTEA_PP(0);
|
|
key = PG_GETARG_BYTEA_PP(1);
|
|
dlen = VARSIZE_ANY_EXHDR(data);
|
|
klen = VARSIZE_ANY_EXHDR(key);
|
|
|
|
rlen = px_combo_decrypt_len(c, dlen);
|
|
res = palloc(VARHDRSZ + rlen);
|
|
|
|
err = px_combo_init(c, (uint8 *) VARDATA_ANY(key), klen, NULL, 0);
|
|
if (!err)
|
|
err = px_combo_decrypt(c, (uint8 *) VARDATA_ANY(data), dlen,
|
|
(uint8 *) VARDATA(res), &rlen);
|
|
|
|
px_combo_free(c);
|
|
|
|
if (err)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("decrypt error: %s", px_strerror(err))));
|
|
|
|
SET_VARSIZE(res, VARHDRSZ + rlen);
|
|
|
|
PG_FREE_IF_COPY(data, 0);
|
|
PG_FREE_IF_COPY(key, 1);
|
|
PG_FREE_IF_COPY(type, 2);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: pg_encrypt_iv(bytea, bytea, bytea, text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_encrypt_iv);
|
|
|
|
Datum
|
|
pg_encrypt_iv(PG_FUNCTION_ARGS)
|
|
{
|
|
int err;
|
|
bytea *data,
|
|
*key,
|
|
*iv,
|
|
*res;
|
|
text *type;
|
|
PX_Combo *c;
|
|
unsigned dlen,
|
|
klen,
|
|
ivlen,
|
|
rlen;
|
|
|
|
type = PG_GETARG_TEXT_PP(3);
|
|
c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);
|
|
|
|
data = PG_GETARG_BYTEA_PP(0);
|
|
key = PG_GETARG_BYTEA_PP(1);
|
|
iv = PG_GETARG_BYTEA_PP(2);
|
|
dlen = VARSIZE_ANY_EXHDR(data);
|
|
klen = VARSIZE_ANY_EXHDR(key);
|
|
ivlen = VARSIZE_ANY_EXHDR(iv);
|
|
|
|
rlen = px_combo_encrypt_len(c, dlen);
|
|
res = palloc(VARHDRSZ + rlen);
|
|
|
|
err = px_combo_init(c, (uint8 *) VARDATA_ANY(key), klen,
|
|
(uint8 *) VARDATA_ANY(iv), ivlen);
|
|
if (!err)
|
|
err = px_combo_encrypt(c, (uint8 *) VARDATA_ANY(data), dlen,
|
|
(uint8 *) VARDATA(res), &rlen);
|
|
|
|
px_combo_free(c);
|
|
|
|
if (err)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("encrypt_iv error: %s", px_strerror(err))));
|
|
|
|
SET_VARSIZE(res, VARHDRSZ + rlen);
|
|
|
|
PG_FREE_IF_COPY(data, 0);
|
|
PG_FREE_IF_COPY(key, 1);
|
|
PG_FREE_IF_COPY(iv, 2);
|
|
PG_FREE_IF_COPY(type, 3);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: pg_decrypt_iv(bytea, bytea, bytea, text) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_decrypt_iv);
|
|
|
|
Datum
|
|
pg_decrypt_iv(PG_FUNCTION_ARGS)
|
|
{
|
|
int err;
|
|
bytea *data,
|
|
*key,
|
|
*iv,
|
|
*res;
|
|
text *type;
|
|
PX_Combo *c;
|
|
unsigned dlen,
|
|
klen,
|
|
rlen,
|
|
ivlen;
|
|
|
|
type = PG_GETARG_TEXT_PP(3);
|
|
c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);
|
|
|
|
data = PG_GETARG_BYTEA_PP(0);
|
|
key = PG_GETARG_BYTEA_PP(1);
|
|
iv = PG_GETARG_BYTEA_PP(2);
|
|
dlen = VARSIZE_ANY_EXHDR(data);
|
|
klen = VARSIZE_ANY_EXHDR(key);
|
|
ivlen = VARSIZE_ANY_EXHDR(iv);
|
|
|
|
rlen = px_combo_decrypt_len(c, dlen);
|
|
res = palloc(VARHDRSZ + rlen);
|
|
|
|
err = px_combo_init(c, (uint8 *) VARDATA_ANY(key), klen,
|
|
(uint8 *) VARDATA_ANY(iv), ivlen);
|
|
if (!err)
|
|
err = px_combo_decrypt(c, (uint8 *) VARDATA_ANY(data), dlen,
|
|
(uint8 *) VARDATA(res), &rlen);
|
|
|
|
px_combo_free(c);
|
|
|
|
if (err)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("decrypt_iv error: %s", px_strerror(err))));
|
|
|
|
SET_VARSIZE(res, VARHDRSZ + rlen);
|
|
|
|
PG_FREE_IF_COPY(data, 0);
|
|
PG_FREE_IF_COPY(key, 1);
|
|
PG_FREE_IF_COPY(iv, 2);
|
|
PG_FREE_IF_COPY(type, 3);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: pg_random_bytes(int4) returns bytea */
|
|
PG_FUNCTION_INFO_V1(pg_random_bytes);
|
|
|
|
Datum
|
|
pg_random_bytes(PG_FUNCTION_ARGS)
|
|
{
|
|
int len = PG_GETARG_INT32(0);
|
|
bytea *res;
|
|
|
|
if (len < 1 || len > 1024)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
|
|
errmsg("Length not in range")));
|
|
|
|
res = palloc(VARHDRSZ + len);
|
|
SET_VARSIZE(res, VARHDRSZ + len);
|
|
|
|
/* generate result */
|
|
if (!pg_strong_random(VARDATA(res), len))
|
|
px_THROW_ERROR(PXE_NO_RANDOM);
|
|
|
|
PG_RETURN_BYTEA_P(res);
|
|
}
|
|
|
|
/* SQL function: gen_random_uuid() returns uuid */
|
|
PG_FUNCTION_INFO_V1(pg_random_uuid);
|
|
|
|
Datum
|
|
pg_random_uuid(PG_FUNCTION_ARGS)
|
|
{
|
|
/* redirect to built-in function */
|
|
return gen_random_uuid(fcinfo);
|
|
}
|
|
|
|
static void *
|
|
find_provider(text *name,
|
|
PFN provider_lookup,
|
|
const char *desc, int silent)
|
|
{
|
|
void *res;
|
|
char *buf;
|
|
int err;
|
|
|
|
buf = downcase_truncate_identifier(VARDATA_ANY(name),
|
|
VARSIZE_ANY_EXHDR(name),
|
|
false);
|
|
|
|
err = provider_lookup(buf, &res);
|
|
|
|
if (err && !silent)
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
|
|
errmsg("Cannot use \"%s\": %s", buf, px_strerror(err))));
|
|
|
|
pfree(buf);
|
|
|
|
return err ? NULL : res;
|
|
}
|