diff options
Diffstat (limited to 'contrib/pgcrypto/pgcrypto.c')
| -rw-r--r-- | contrib/pgcrypto/pgcrypto.c | 79 |
1 files changed, 41 insertions, 38 deletions
diff --git a/contrib/pgcrypto/pgcrypto.c b/contrib/pgcrypto/pgcrypto.c index 1feb3e4806a..31e5a845bd6 100644 --- a/contrib/pgcrypto/pgcrypto.c +++ b/contrib/pgcrypto/pgcrypto.c @@ -1,7 +1,7 @@ /* * pgcrypto.c * Cryptographic digests for PostgreSQL. - * + * * Copyright (c) 2000 Marko Kreen * All rights reserved. * @@ -9,15 +9,15 @@ * 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. + * 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. + * 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 + * 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) @@ -26,7 +26,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: pgcrypto.c,v 1.6 2001/02/10 02:31:26 tgl Exp $ + * $Id: pgcrypto.c,v 1.7 2001/03/22 03:59:10 momjian Exp $ */ #include "postgres.h" @@ -44,12 +44,12 @@ /* exported functions */ -Datum digest(PG_FUNCTION_ARGS); -Datum digest_exists(PG_FUNCTION_ARGS); +Datum digest(PG_FUNCTION_ARGS); +Datum digest_exists(PG_FUNCTION_ARGS); /* private stuff */ static pg_digest * -find_digest(pg_digest *hbuf, text *name, int silent); + find_digest(pg_digest * hbuf, text *name, int silent); /* SQL function: hash(text, text) returns text */ @@ -58,31 +58,33 @@ PG_FUNCTION_INFO_V1(digest); Datum digest(PG_FUNCTION_ARGS) { - text *arg; - text *name; - uint len, hlen; - pg_digest *h, _hbuf; - text *res; - + text *arg; + text *name; + uint len, + hlen; + pg_digest *h, + _hbuf; + text *res; + if (PG_ARGISNULL(0) || PG_ARGISNULL(1)) PG_RETURN_NULL(); - - name = PG_GETARG_TEXT_P(1); - h = find_digest(&_hbuf, name, 0); /* will give error if fails */ + + name = PG_GETARG_TEXT_P(1); + h = find_digest(&_hbuf, name, 0); /* will give error if fails */ hlen = h->length(h); - - res = (text *)palloc(hlen + VARHDRSZ); + + res = (text *) palloc(hlen + VARHDRSZ); VARATT_SIZEP(res) = hlen + VARHDRSZ; - + arg = PG_GETARG_TEXT_P(0); len = VARSIZE(arg) - VARHDRSZ; - + h->digest(h, VARDATA(arg), len, VARDATA(res)); - + PG_FREE_IF_COPY(arg, 0); PG_FREE_IF_COPY(name, 1); - + PG_RETURN_TEXT_P(res); } @@ -92,16 +94,17 @@ PG_FUNCTION_INFO_V1(digest_exists); Datum digest_exists(PG_FUNCTION_ARGS) { - text *name; - pg_digest _hbuf, *res; + text *name; + pg_digest _hbuf, + *res; if (PG_ARGISNULL(0)) PG_RETURN_NULL(); - + name = PG_GETARG_TEXT_P(0); - + res = find_digest(&_hbuf, name, 1); - + PG_FREE_IF_COPY(name, 0); if (res != NULL) @@ -110,26 +113,26 @@ digest_exists(PG_FUNCTION_ARGS) } static pg_digest * -find_digest(pg_digest *hbuf, text *name, int silent) +find_digest(pg_digest * hbuf, text *name, int silent) { - pg_digest *p; - char buf[NAMEDATALEN]; - uint len; - + pg_digest *p; + char buf[NAMEDATALEN]; + uint len; + len = VARSIZE(name) - VARHDRSZ; - if (len >= NAMEDATALEN) { + if (len >= NAMEDATALEN) + { if (silent) return NULL; elog(ERROR, "Hash type does not exist (name too long)"); } - + memcpy(buf, VARDATA(name), len); buf[len] = 0; - + p = pg_find_digest(hbuf, buf); if (p == NULL && !silent) elog(ERROR, "Hash type does not exist: '%s'", buf); return p; } - |