mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-09 08:10:09 +08:00
0bd61548ab
conversion of basic ASCII letters. Remove all uses of strcasecmp and strncasecmp in favor of new functions pg_strcasecmp and pg_strncasecmp; remove most but not all direct uses of toupper and tolower in favor of pg_toupper and pg_tolower. These functions use the same notions of case folding already developed for identifier case conversion. I left the straight locale-based folding in place for situations where we are just manipulating user data and not trying to match it to built-in strings --- for example, the SQL upper() function is still locale dependent. Perhaps this will prove not to be what's wanted, but at the moment we can initdb and pass regression tests in Turkish locale.
597 lines
9.5 KiB
C
597 lines
9.5 KiB
C
/*
|
|
* internal.c
|
|
* Wrapper for builtin functions
|
|
*
|
|
* 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.
|
|
*
|
|
* $PostgreSQL: pgsql/contrib/pgcrypto/internal.c,v 1.13 2004/05/07 00:24:57 tgl Exp $
|
|
*/
|
|
|
|
|
|
#include <postgres.h>
|
|
|
|
#include "px.h"
|
|
|
|
#include "md5.h"
|
|
#include "sha1.h"
|
|
#include "blf.h"
|
|
#include "rijndael.h"
|
|
|
|
#ifndef MD5_DIGEST_LENGTH
|
|
#define MD5_DIGEST_LENGTH 16
|
|
#endif
|
|
|
|
#ifndef SHA1_DIGEST_LENGTH
|
|
#ifdef SHA1_RESULTLEN
|
|
#define SHA1_DIGEST_LENGTH SHA1_RESULTLEN
|
|
#else
|
|
#define SHA1_DIGEST_LENGTH 20
|
|
#endif
|
|
#endif
|
|
|
|
#define SHA1_BLOCK_SIZE 64
|
|
#define MD5_BLOCK_SIZE 64
|
|
|
|
static void init_md5(PX_MD * h);
|
|
static void init_sha1(PX_MD * h);
|
|
|
|
static struct int_digest
|
|
{
|
|
char *name;
|
|
void (*init) (PX_MD * h);
|
|
} int_digest_list[] =
|
|
|
|
{
|
|
{
|
|
"md5", init_md5
|
|
},
|
|
{
|
|
"sha1", init_sha1
|
|
},
|
|
{
|
|
NULL, NULL
|
|
}
|
|
};
|
|
|
|
/* MD5 */
|
|
|
|
static unsigned
|
|
int_md5_len(PX_MD * h)
|
|
{
|
|
return MD5_DIGEST_LENGTH;
|
|
}
|
|
|
|
static unsigned
|
|
int_md5_block_len(PX_MD * h)
|
|
{
|
|
return MD5_BLOCK_SIZE;
|
|
}
|
|
|
|
static void
|
|
int_md5_update(PX_MD * h, const uint8 *data, unsigned dlen)
|
|
{
|
|
MD5_CTX *ctx = (MD5_CTX *) h->p.ptr;
|
|
|
|
MD5Update(ctx, data, dlen);
|
|
}
|
|
|
|
static void
|
|
int_md5_reset(PX_MD * h)
|
|
{
|
|
MD5_CTX *ctx = (MD5_CTX *) h->p.ptr;
|
|
|
|
MD5Init(ctx);
|
|
}
|
|
|
|
static void
|
|
int_md5_finish(PX_MD * h, uint8 *dst)
|
|
{
|
|
MD5_CTX *ctx = (MD5_CTX *) h->p.ptr;
|
|
|
|
MD5Final(dst, ctx);
|
|
}
|
|
|
|
static void
|
|
int_md5_free(PX_MD * h)
|
|
{
|
|
MD5_CTX *ctx = (MD5_CTX *) h->p.ptr;
|
|
|
|
px_free(ctx);
|
|
px_free(h);
|
|
}
|
|
|
|
/* SHA1 */
|
|
|
|
static unsigned
|
|
int_sha1_len(PX_MD * h)
|
|
{
|
|
return SHA1_DIGEST_LENGTH;
|
|
}
|
|
|
|
static unsigned
|
|
int_sha1_block_len(PX_MD * h)
|
|
{
|
|
return SHA1_BLOCK_SIZE;
|
|
}
|
|
|
|
static void
|
|
int_sha1_update(PX_MD * h, const uint8 *data, unsigned dlen)
|
|
{
|
|
SHA1_CTX *ctx = (SHA1_CTX *) h->p.ptr;
|
|
|
|
SHA1Update(ctx, data, dlen);
|
|
}
|
|
|
|
static void
|
|
int_sha1_reset(PX_MD * h)
|
|
{
|
|
SHA1_CTX *ctx = (SHA1_CTX *) h->p.ptr;
|
|
|
|
SHA1Init(ctx);
|
|
}
|
|
|
|
static void
|
|
int_sha1_finish(PX_MD * h, uint8 *dst)
|
|
{
|
|
SHA1_CTX *ctx = (SHA1_CTX *) h->p.ptr;
|
|
|
|
SHA1Final(dst, ctx);
|
|
}
|
|
|
|
static void
|
|
int_sha1_free(PX_MD * h)
|
|
{
|
|
SHA1_CTX *ctx = (SHA1_CTX *) h->p.ptr;
|
|
|
|
px_free(ctx);
|
|
px_free(h);
|
|
}
|
|
|
|
/* init functions */
|
|
|
|
static void
|
|
init_md5(PX_MD * md)
|
|
{
|
|
MD5_CTX *ctx;
|
|
|
|
ctx = px_alloc(sizeof(*ctx));
|
|
|
|
md->p.ptr = ctx;
|
|
|
|
md->result_size = int_md5_len;
|
|
md->block_size = int_md5_block_len;
|
|
md->reset = int_md5_reset;
|
|
md->update = int_md5_update;
|
|
md->finish = int_md5_finish;
|
|
md->free = int_md5_free;
|
|
|
|
md->reset(md);
|
|
}
|
|
|
|
static void
|
|
init_sha1(PX_MD * md)
|
|
{
|
|
SHA1_CTX *ctx;
|
|
|
|
ctx = px_alloc(sizeof(*ctx));
|
|
|
|
md->p.ptr = ctx;
|
|
|
|
md->result_size = int_sha1_len;
|
|
md->block_size = int_sha1_block_len;
|
|
md->reset = int_sha1_reset;
|
|
md->update = int_sha1_update;
|
|
md->finish = int_sha1_finish;
|
|
md->free = int_sha1_free;
|
|
|
|
md->reset(md);
|
|
}
|
|
|
|
/*
|
|
* ciphers generally
|
|
*/
|
|
|
|
#define INT_MAX_KEY (512/8)
|
|
#define INT_MAX_IV (128/8)
|
|
|
|
struct int_ctx
|
|
{
|
|
uint8 keybuf[INT_MAX_KEY];
|
|
uint8 iv[INT_MAX_IV];
|
|
union
|
|
{
|
|
blf_ctx bf;
|
|
rijndael_ctx rj;
|
|
} ctx;
|
|
unsigned keylen;
|
|
int is_init;
|
|
int mode;
|
|
};
|
|
|
|
static void
|
|
intctx_free(PX_Cipher * c)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (cx)
|
|
{
|
|
memset(cx, 0, sizeof *cx);
|
|
px_free(cx);
|
|
}
|
|
px_free(c);
|
|
}
|
|
|
|
/*
|
|
* AES/rijndael
|
|
*/
|
|
|
|
#define MODE_ECB 0
|
|
#define MODE_CBC 1
|
|
|
|
static unsigned
|
|
rj_block_size(PX_Cipher * c)
|
|
{
|
|
return 128 / 8;
|
|
}
|
|
|
|
static unsigned
|
|
rj_key_size(PX_Cipher * c)
|
|
{
|
|
return 256 / 8;
|
|
}
|
|
|
|
static unsigned
|
|
rj_iv_size(PX_Cipher * c)
|
|
{
|
|
return 128 / 8;
|
|
}
|
|
|
|
static int
|
|
rj_init(PX_Cipher * c, const uint8 *key, unsigned klen, const uint8 *iv)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (klen <= 128 / 8)
|
|
cx->keylen = 128 / 8;
|
|
else if (klen <= 192 / 8)
|
|
cx->keylen = 192 / 8;
|
|
else if (klen <= 256 / 8)
|
|
cx->keylen = 256 / 8;
|
|
else
|
|
return -1;
|
|
|
|
memcpy(&cx->keybuf, key, klen);
|
|
|
|
if (iv)
|
|
memcpy(cx->iv, iv, 128 / 8);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rj_real_init(struct int_ctx * cx, int dir)
|
|
{
|
|
aes_set_key(&cx->ctx.rj, cx->keybuf, cx->keylen * 8, dir);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rj_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen, uint8 *res)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (!cx->is_init)
|
|
{
|
|
if (rj_real_init(cx, 1))
|
|
return -1;
|
|
}
|
|
|
|
if (dlen == 0)
|
|
return 0;
|
|
|
|
if (dlen & 15)
|
|
return -1;
|
|
|
|
memcpy(res, data, dlen);
|
|
|
|
if (cx->mode == MODE_CBC)
|
|
{
|
|
aes_cbc_encrypt(&cx->ctx.rj, cx->iv, res, dlen);
|
|
memcpy(cx->iv, res + dlen - 16, 16);
|
|
}
|
|
else
|
|
aes_ecb_encrypt(&cx->ctx.rj, res, dlen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rj_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen, uint8 *res)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (!cx->is_init)
|
|
if (rj_real_init(cx, 0))
|
|
return -1;
|
|
|
|
if (dlen == 0)
|
|
return 0;
|
|
|
|
if (dlen & 15)
|
|
return -1;
|
|
|
|
memcpy(res, data, dlen);
|
|
|
|
if (cx->mode == MODE_CBC)
|
|
{
|
|
aes_cbc_decrypt(&cx->ctx.rj, cx->iv, res, dlen);
|
|
memcpy(cx->iv, data + dlen - 16, 16);
|
|
}
|
|
else
|
|
aes_ecb_decrypt(&cx->ctx.rj, res, dlen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* initializers
|
|
*/
|
|
|
|
static PX_Cipher *
|
|
rj_load(int mode)
|
|
{
|
|
PX_Cipher *c;
|
|
struct int_ctx *cx;
|
|
|
|
c = px_alloc(sizeof *c);
|
|
memset(c, 0, sizeof *c);
|
|
|
|
c->block_size = rj_block_size;
|
|
c->key_size = rj_key_size;
|
|
c->iv_size = rj_iv_size;
|
|
c->init = rj_init;
|
|
c->encrypt = rj_encrypt;
|
|
c->decrypt = rj_decrypt;
|
|
c->free = intctx_free;
|
|
|
|
cx = px_alloc(sizeof *cx);
|
|
memset(cx, 0, sizeof *cx);
|
|
cx->mode = mode;
|
|
|
|
c->ptr = cx;
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* blowfish
|
|
*/
|
|
|
|
static unsigned
|
|
bf_block_size(PX_Cipher * c)
|
|
{
|
|
return 8;
|
|
}
|
|
|
|
static unsigned
|
|
bf_key_size(PX_Cipher * c)
|
|
{
|
|
return BLF_MAXKEYLEN;
|
|
}
|
|
|
|
static unsigned
|
|
bf_iv_size(PX_Cipher * c)
|
|
{
|
|
return 8;
|
|
}
|
|
|
|
static int
|
|
bf_init(PX_Cipher * c, const uint8 *key, unsigned klen, const uint8 *iv)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
blf_key(&cx->ctx.bf, key, klen);
|
|
if (iv)
|
|
memcpy(cx->iv, iv, 8);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bf_encrypt(PX_Cipher * c, const uint8 *data, unsigned dlen, uint8 *res)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (dlen == 0)
|
|
return 0;
|
|
|
|
if (dlen & 7)
|
|
return -1;
|
|
|
|
memcpy(res, data, dlen);
|
|
switch (cx->mode)
|
|
{
|
|
case MODE_ECB:
|
|
blf_ecb_encrypt(&cx->ctx.bf, res, dlen);
|
|
break;
|
|
case MODE_CBC:
|
|
blf_cbc_encrypt(&cx->ctx.bf, cx->iv, res, dlen);
|
|
memcpy(cx->iv, res + dlen - 8, 8);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
bf_decrypt(PX_Cipher * c, const uint8 *data, unsigned dlen, uint8 *res)
|
|
{
|
|
struct int_ctx *cx = (struct int_ctx *) c->ptr;
|
|
|
|
if (dlen == 0)
|
|
return 0;
|
|
|
|
if (dlen & 7)
|
|
return -1;
|
|
|
|
memcpy(res, data, dlen);
|
|
switch (cx->mode)
|
|
{
|
|
case MODE_ECB:
|
|
blf_ecb_decrypt(&cx->ctx.bf, res, dlen);
|
|
break;
|
|
case MODE_CBC:
|
|
blf_cbc_decrypt(&cx->ctx.bf, cx->iv, res, dlen);
|
|
memcpy(cx->iv, data + dlen - 8, 8);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static PX_Cipher *
|
|
bf_load(int mode)
|
|
{
|
|
PX_Cipher *c;
|
|
struct int_ctx *cx;
|
|
|
|
c = px_alloc(sizeof *c);
|
|
memset(c, 0, sizeof *c);
|
|
|
|
c->block_size = bf_block_size;
|
|
c->key_size = bf_key_size;
|
|
c->iv_size = bf_iv_size;
|
|
c->init = bf_init;
|
|
c->encrypt = bf_encrypt;
|
|
c->decrypt = bf_decrypt;
|
|
c->free = intctx_free;
|
|
|
|
cx = px_alloc(sizeof *cx);
|
|
memset(cx, 0, sizeof *cx);
|
|
cx->mode = mode;
|
|
c->ptr = cx;
|
|
return c;
|
|
}
|
|
|
|
/* ciphers */
|
|
|
|
static PX_Cipher *
|
|
rj_128_ecb()
|
|
{
|
|
return rj_load(MODE_ECB);
|
|
}
|
|
|
|
static PX_Cipher *
|
|
rj_128_cbc()
|
|
{
|
|
return rj_load(MODE_CBC);
|
|
}
|
|
|
|
static PX_Cipher *
|
|
bf_ecb_load()
|
|
{
|
|
return bf_load(MODE_ECB);
|
|
}
|
|
|
|
static PX_Cipher *
|
|
bf_cbc_load()
|
|
{
|
|
return bf_load(MODE_CBC);
|
|
}
|
|
|
|
static struct
|
|
{
|
|
char *name;
|
|
PX_Cipher *(*load) (void);
|
|
} int_ciphers[] =
|
|
|
|
{
|
|
{
|
|
"bf-cbc", bf_cbc_load
|
|
},
|
|
{
|
|
"bf-ecb", bf_ecb_load
|
|
},
|
|
{
|
|
"aes-128-cbc", rj_128_cbc
|
|
},
|
|
{
|
|
"aes-128-ecb", rj_128_ecb
|
|
},
|
|
{
|
|
NULL, NULL
|
|
}
|
|
};
|
|
|
|
static PX_Alias int_aliases[] = {
|
|
{"bf", "bf-cbc"},
|
|
{"blowfish", "bf-cbc"},
|
|
{"aes", "aes-128-cbc"},
|
|
{"aes-ecb", "aes-128-ecb"},
|
|
{"aes-cbc", "aes-128-cbc"},
|
|
{"aes-128", "aes-128-cbc"},
|
|
{"rijndael", "aes-128-cbc"},
|
|
{"rijndael-128", "aes-128-cbc"},
|
|
{NULL, NULL}
|
|
};
|
|
|
|
/* PUBLIC FUNCTIONS */
|
|
|
|
int
|
|
px_find_digest(const char *name, PX_MD ** res)
|
|
{
|
|
struct int_digest *p;
|
|
PX_MD *h;
|
|
|
|
for (p = int_digest_list; p->name; p++)
|
|
if (pg_strcasecmp(p->name, name) == 0)
|
|
{
|
|
h = px_alloc(sizeof(*h));
|
|
p->init(h);
|
|
|
|
*res = h;
|
|
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
px_find_cipher(const char *name, PX_Cipher ** res)
|
|
{
|
|
int i;
|
|
PX_Cipher *c = NULL;
|
|
|
|
name = px_resolve_alias(int_aliases, name);
|
|
|
|
for (i = 0; int_ciphers[i].name; i++)
|
|
if (!strcmp(int_ciphers[i].name, name))
|
|
{
|
|
c = int_ciphers[i].load();
|
|
break;
|
|
}
|
|
|
|
if (c == NULL)
|
|
return -1;
|
|
|
|
*res = c;
|
|
return 0;
|
|
}
|