Movatterモバイル変換

[0]ホーム
URL:

Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly

 Sign up
Appearance settings

Commitf3567ee

Browse files
author
Neil Conway
committed
Implement md5(bytea), update regression tests and documentation. Patch
from Abhijit Menon-Sen, minor editorialization from Neil Conway. Also,improve md5(text) to allocate a constant-sized buffer on the stackrather than via palloc.Catalog version bumped.
1 parentff0c143 commitf3567ee

File tree

7 files changed

+99
-10
lines changed

7 files changed

+99
-10
lines changed

‎doc/src/sgml/func.sgml

Lines changed: 12 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,5 @@
11
<!--
2-
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.247 2005/05/11 13:58:50 neilc Exp $
2+
$PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.248 2005/05/20 01:29:55 neilc Exp $
33
PostgreSQL documentation
44
-->
55

@@ -2328,6 +2328,17 @@ PostgreSQL documentation
23282328
<entry><literal>5</literal></entry>
23292329
</row>
23302330

2331+
<row>
2332+
<entry><literal><function>md5</function>(<parameter>string</parameter>)</literal></entry>
2333+
<entry><type>text</type></entry>
2334+
<entry>
2335+
Calculates the MD5 hash of <parameter>string</parameter>,
2336+
returning the result in hexadecimal.
2337+
</entry>
2338+
<entry><literal>md5('Th\\000omas'::bytea)</literal></entry>
2339+
<entry><literal>8ab2d3c9689aaf18 b4958c334c82d8b1</literal></entry>
2340+
</row>
2341+
23312342
<row>
23322343
<entry>
23332344
<literal><function>decode</function>(<parameter>string</parameter> <type>text</type>,

‎src/backend/utils/adt/varlena.c

Lines changed: 24 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.120 2005/05/01 18:56:18 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.121 2005/05/20 01:29:55 neilc Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -2308,15 +2308,12 @@ md5_text(PG_FUNCTION_ARGS)
23082308
{
23092309
text*in_text=PG_GETARG_TEXT_P(0);
23102310
size_tlen;
2311-
char*hexsum;
2311+
charhexsum[MD5_HASH_LEN+1];
23122312
text*result_text;
23132313

23142314
/* Calculate the length of the buffer using varlena metadata */
23152315
len=VARSIZE(in_text)-VARHDRSZ;
23162316

2317-
/* leave room for the terminating '\0' */
2318-
hexsum= (char*)palloc(MD5_HASH_LEN+1);
2319-
23202317
/* get the hash result */
23212318
if (md5_hash(VARDATA(in_text),len,hexsum)== false)
23222319
ereport(ERROR,
@@ -2327,3 +2324,25 @@ md5_text(PG_FUNCTION_ARGS)
23272324
result_text=PG_STR_GET_TEXT(hexsum);
23282325
PG_RETURN_TEXT_P(result_text);
23292326
}
2327+
2328+
/*
2329+
* Create an md5 hash of a bytea field and return it as a hex string:
2330+
* 16-byte md5 digest is represented in 32 hex characters.
2331+
*/
2332+
Datum
2333+
md5_bytea(PG_FUNCTION_ARGS)
2334+
{
2335+
bytea*in=PG_GETARG_BYTEA_P(0);
2336+
size_tlen;
2337+
charhexsum[MD5_HASH_LEN+1];
2338+
text*result_text;
2339+
2340+
len=VARSIZE(in)-VARHDRSZ;
2341+
if (md5_hash(VARDATA(in),len,hexsum)== false)
2342+
ereport(ERROR,
2343+
(errcode(ERRCODE_OUT_OF_MEMORY),
2344+
errmsg("out of memory")));
2345+
2346+
result_text=PG_STR_GET_TEXT(hexsum);
2347+
PG_RETURN_TEXT_P(result_text);
2348+
}

‎src/include/catalog/catversion.h

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -37,7 +37,7 @@
3737
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
3838
* Portions Copyright (c) 1994, Regents of the University of California
3939
*
40-
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.268 2005/05/17 21:46:10 tgl Exp $
40+
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.269 2005/05/20 01:29:55 neilc Exp $
4141
*
4242
*-------------------------------------------------------------------------
4343
*/
@@ -53,6 +53,6 @@
5353
*/
5454

5555
/*yyyymmddN */
56-
#defineCATALOG_VERSION_NO200505171
56+
#defineCATALOG_VERSION_NO200505201
5757

5858
#endif

‎src/include/catalog/pg_proc.h

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.362 2005/05/17 21:46:10 tgl Exp $
10+
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.363 2005/05/20 01:29:55 neilc Exp $
1111
*
1212
* NOTES
1313
* The script catalog/genbki.sh reads this file and generates .bki
@@ -3269,6 +3269,8 @@ DESCR("I/O");
32693269
/* cryptographic */
32703270
DATA(insertOID=2311 (md5PGNSPPGUID12fftfi125"25"_null__null__null_md5_text-_null_ ));
32713271
DESCR("calculates md5 hash");
3272+
DATA(insertOID=2321 (md5PGNSPPGUID12fftfi125"17"_null__null__null_md5_bytea-_null_ ));
3273+
DESCR("calculates md5 hash");
32723274

32733275
/* crosstype operations for date vs. timestamp and timestamptz */
32743276
DATA(insertOID=2338 (date_lt_timestampPGNSPPGUID12fftfi216"1082 1114"_null__null__null_date_lt_timestamp-_null_ ));

‎src/include/utils/builtins.h

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.255 2005/04/12 04:26:32 tgl Exp $
10+
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.256 2005/05/20 01:29:55 neilc Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -572,6 +572,7 @@ extern Datum array_to_text(PG_FUNCTION_ARGS);
572572
externDatumto_hex32(PG_FUNCTION_ARGS);
573573
externDatumto_hex64(PG_FUNCTION_ARGS);
574574
externDatummd5_text(PG_FUNCTION_ARGS);
575+
externDatummd5_bytea(PG_FUNCTION_ARGS);
575576

576577
externDatumunknownin(PG_FUNCTION_ARGS);
577578
externDatumunknownout(PG_FUNCTION_ARGS);

‎src/test/regress/expected/strings.out

Lines changed: 42 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -825,3 +825,45 @@ select md5('12345678901234567890123456789012345678901234567890123456789012345678
825825
t
826826
(1 row)
827827

828+
select md5(''::bytea) = 'd41d8cd98f00b204e9800998ecf8427e' AS "TRUE";
829+
TRUE
830+
------
831+
t
832+
(1 row)
833+
834+
select md5('a'::bytea) = '0cc175b9c0f1b6a831c399e269772661' AS "TRUE";
835+
TRUE
836+
------
837+
t
838+
(1 row)
839+
840+
select md5('abc'::bytea) = '900150983cd24fb0d6963f7d28e17f72' AS "TRUE";
841+
TRUE
842+
------
843+
t
844+
(1 row)
845+
846+
select md5('message digest'::bytea) = 'f96b697d7cb7938d525a2f31aaf161d0' AS "TRUE";
847+
TRUE
848+
------
849+
t
850+
(1 row)
851+
852+
select md5('abcdefghijklmnopqrstuvwxyz'::bytea) = 'c3fcd3d76192e4007dfb496cca67e13b' AS "TRUE";
853+
TRUE
854+
------
855+
t
856+
(1 row)
857+
858+
select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'::bytea) = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
859+
TRUE
860+
------
861+
t
862+
(1 row)
863+
864+
select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890'::bytea) = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";
865+
TRUE
866+
------
867+
t
868+
(1 row)
869+

‎src/test/regress/sql/strings.sql

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -331,3 +331,17 @@ select md5('abcdefghijklmnopqrstuvwxyz') = 'c3fcd3d76192e4007dfb496cca67e13b' AS
331331
select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789')='d174ab98d277d9f5a5611c2c9f419d9f'AS"TRUE";
332332

333333
select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890')='57edf4a22be3c955ac49da2e2107b67a'AS"TRUE";
334+
335+
select md5(''::bytea)='d41d8cd98f00b204e9800998ecf8427e'AS"TRUE";
336+
337+
select md5('a'::bytea)='0cc175b9c0f1b6a831c399e269772661'AS"TRUE";
338+
339+
select md5('abc'::bytea)='900150983cd24fb0d6963f7d28e17f72'AS"TRUE";
340+
341+
select md5('message digest'::bytea)='f96b697d7cb7938d525a2f31aaf161d0'AS"TRUE";
342+
343+
select md5('abcdefghijklmnopqrstuvwxyz'::bytea)='c3fcd3d76192e4007dfb496cca67e13b'AS"TRUE";
344+
345+
select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'::bytea)='d174ab98d277d9f5a5611c2c9f419d9f'AS"TRUE";
346+
347+
select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890'::bytea)='57edf4a22be3c955ac49da2e2107b67a'AS"TRUE";

0 commit comments

Comments
 (0)
[8]ページ先頭
©2009-2025 Movatter.jp