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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.
197 lines
4.3 KiB
C
197 lines
4.3 KiB
C
/*
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* px-crypt.c
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* Wrapper for various crypt algorithms.
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*
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* Copyright (c) 2001 Marko Kreen
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $PostgreSQL: pgsql/contrib/pgcrypto/px-crypt.c,v 1.8 2004/05/07 00:24:57 tgl Exp $
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*/
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#include <postgres.h>
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#include "px.h"
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#include "px-crypt.h"
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#ifndef PX_SYSTEM_CRYPT
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static char *
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run_crypt_des(const char *psw, const char *salt,
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char *buf, unsigned len)
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{
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char *res;
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res = px_crypt_des(psw, salt);
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if (strlen(res) > len - 1)
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return NULL;
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strcpy(buf, res);
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return buf;
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}
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static char *
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run_crypt_md5(const char *psw, const char *salt,
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char *buf, unsigned len)
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{
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char *res;
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res = px_crypt_md5(psw, salt, buf, len);
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return res;
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}
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static char *
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run_crypt_bf(const char *psw, const char *salt,
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char *buf, unsigned len)
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{
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char *res;
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res = _crypt_blowfish_rn(psw, salt, buf, len);
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return res;
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}
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static struct
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{
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char *id;
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unsigned id_len;
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char *(*crypt) (const char *psw, const char *salt,
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char *buf, unsigned len);
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} px_crypt_list[] =
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{
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{
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"$2a$", 4, run_crypt_bf
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},
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{
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"$2$", 3, NULL
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}, /* N/A */
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{
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"$1$", 3, run_crypt_md5
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},
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{
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"_", 1, run_crypt_des
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},
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{
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"", 0, run_crypt_des
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},
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{
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NULL, 0, NULL
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}
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};
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char *
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px_crypt(const char *psw, const char *salt, char *buf, unsigned len)
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{
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int i;
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for (i = 0; px_crypt_list[i].id; i++)
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{
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if (!px_crypt_list[i].id_len)
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break;
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if (!strncmp(salt, px_crypt_list[i].id, px_crypt_list[i].id_len))
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break;
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}
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if (px_crypt_list[i].crypt == NULL)
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return NULL;
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return px_crypt_list[i].crypt(psw, salt, buf, len);
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}
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#else /* PX_SYSTEM_CRYPT */
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extern char *crypt(const char *psw, const char *salt);
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char *
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px_crypt(const char *psw, const char *salt,
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char *buf, unsigned len)
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{
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char *res;
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res = crypt(psw, salt);
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if (!res || strlen(res) >= len)
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return NULL;
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strcpy(buf, res);
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return buf;
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}
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#endif
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/*
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* salt generators
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*/
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struct generator
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{
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char *name;
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char *(*gen) (unsigned long count, const char *input, int size,
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char *output, int output_size);
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int input_len;
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int def_rounds;
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int min_rounds;
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int max_rounds;
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};
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static struct generator gen_list[] = {
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{"des", _crypt_gensalt_traditional_rn, 2, 0, 0, 0},
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{"md5", _crypt_gensalt_md5_rn, 6, 0, 0, 0},
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{"xdes", _crypt_gensalt_extended_rn, 3, PX_XDES_ROUNDS, 1, 0xFFFFFF},
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{"bf", _crypt_gensalt_blowfish_rn, 16, PX_BF_ROUNDS, 4, 31},
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{NULL, NULL, 0, 0, 0}
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};
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unsigned
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px_gen_salt(const char *salt_type, char *buf, int rounds)
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{
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int i,
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res;
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struct generator *g;
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char *p;
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char rbuf[16];
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for (i = 0; gen_list[i].name; i++)
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{
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g = &gen_list[i];
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if (pg_strcasecmp(g->name, salt_type) != 0)
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continue;
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if (g->def_rounds)
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{
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if (rounds == 0)
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rounds = g->def_rounds;
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if (rounds < g->min_rounds || rounds > g->max_rounds)
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return 0;
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}
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res = px_get_random_bytes(rbuf, g->input_len);
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if (res != g->input_len)
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return 0;
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p = g->gen(rounds, rbuf, g->input_len, buf, PX_MAX_SALT_LEN);
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memset(rbuf, 0, sizeof(rbuf));
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return p != NULL ? strlen(p) : 0;
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}
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return 0;
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}
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