diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1b031c0c31..8c6eebc86c 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1,5 +1,5 @@
@@ -2328,6 +2328,17 @@ PostgreSQL documentation
5
+
+ md5(string)
+ text
+
+ Calculates the MD5 hash of string,
+ returning the result in hexadecimal.
+
+ md5('Th\\000omas'::bytea)
+ 8ab2d3c9689aaf18 b4958c334c82d8b1
+
+
decode(string text,
diff --git a/src/backend/utils/adt/varlena.c b/src/backend/utils/adt/varlena.c
index 0022ab5eff..14dfcb6335 100644
--- a/src/backend/utils/adt/varlena.c
+++ b/src/backend/utils/adt/varlena.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.120 2005/05/01 18:56:18 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.121 2005/05/20 01:29:55 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2308,15 +2308,12 @@ md5_text(PG_FUNCTION_ARGS)
{
text *in_text = PG_GETARG_TEXT_P(0);
size_t len;
- char *hexsum;
+ char hexsum[MD5_HASH_LEN + 1];
text *result_text;
/* Calculate the length of the buffer using varlena metadata */
len = VARSIZE(in_text) - VARHDRSZ;
- /* leave room for the terminating '\0' */
- hexsum = (char *) palloc(MD5_HASH_LEN + 1);
-
/* get the hash result */
if (md5_hash(VARDATA(in_text), len, hexsum) == false)
ereport(ERROR,
@@ -2327,3 +2324,25 @@ md5_text(PG_FUNCTION_ARGS)
result_text = PG_STR_GET_TEXT(hexsum);
PG_RETURN_TEXT_P(result_text);
}
+
+/*
+ * Create an md5 hash of a bytea field and return it as a hex string:
+ * 16-byte md5 digest is represented in 32 hex characters.
+ */
+Datum
+md5_bytea(PG_FUNCTION_ARGS)
+{
+ bytea *in = PG_GETARG_BYTEA_P(0);
+ size_t len;
+ char hexsum[MD5_HASH_LEN + 1];
+ text *result_text;
+
+ len = VARSIZE(in) - VARHDRSZ;
+ if (md5_hash(VARDATA(in), len, hexsum) == false)
+ ereport(ERROR,
+ (errcode(ERRCODE_OUT_OF_MEMORY),
+ errmsg("out of memory")));
+
+ result_text = PG_STR_GET_TEXT(hexsum);
+ PG_RETURN_TEXT_P(result_text);
+}
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index dd1c29ab02..97817e9229 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.268 2005/05/17 21:46:10 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.269 2005/05/20 01:29:55 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@@ -53,6 +53,6 @@
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 200505171
+#define CATALOG_VERSION_NO 200505201
#endif
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index a3f50ea890..ebf15f8c19 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.362 2005/05/17 21:46:10 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.363 2005/05/20 01:29:55 neilc Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@@ -3269,6 +3269,8 @@ DESCR("I/O");
/* cryptographic */
DATA(insert OID = 2311 ( md5 PGNSP PGUID 12 f f t f i 1 25 "25" _null_ _null_ _null_ md5_text - _null_ ));
DESCR("calculates md5 hash");
+DATA(insert OID = 2321 ( md5 PGNSP PGUID 12 f f t f i 1 25 "17" _null_ _null_ _null_ md5_bytea - _null_ ));
+DESCR("calculates md5 hash");
/* crosstype operations for date vs. timestamp and timestamptz */
DATA(insert OID = 2338 ( date_lt_timestamp PGNSP PGUID 12 f f t f i 2 16 "1082 1114" _null_ _null_ _null_ date_lt_timestamp - _null_ ));
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index 96e33786ee..865c673f51 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.255 2005/04/12 04:26:32 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.256 2005/05/20 01:29:55 neilc Exp $
*
*-------------------------------------------------------------------------
*/
@@ -572,6 +572,7 @@ extern Datum array_to_text(PG_FUNCTION_ARGS);
extern Datum to_hex32(PG_FUNCTION_ARGS);
extern Datum to_hex64(PG_FUNCTION_ARGS);
extern Datum md5_text(PG_FUNCTION_ARGS);
+extern Datum md5_bytea(PG_FUNCTION_ARGS);
extern Datum unknownin(PG_FUNCTION_ARGS);
extern Datum unknownout(PG_FUNCTION_ARGS);
diff --git a/src/test/regress/expected/strings.out b/src/test/regress/expected/strings.out
index 3421b87522..ab4cd6a797 100644
--- a/src/test/regress/expected/strings.out
+++ b/src/test/regress/expected/strings.out
@@ -825,3 +825,45 @@ select md5('12345678901234567890123456789012345678901234567890123456789012345678
t
(1 row)
+select md5(''::bytea) = 'd41d8cd98f00b204e9800998ecf8427e' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('a'::bytea) = '0cc175b9c0f1b6a831c399e269772661' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('abc'::bytea) = '900150983cd24fb0d6963f7d28e17f72' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('message digest'::bytea) = 'f96b697d7cb7938d525a2f31aaf161d0' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('abcdefghijklmnopqrstuvwxyz'::bytea) = 'c3fcd3d76192e4007dfb496cca67e13b' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'::bytea) = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
+select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890'::bytea) = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";
+ TRUE
+------
+ t
+(1 row)
+
diff --git a/src/test/regress/sql/strings.sql b/src/test/regress/sql/strings.sql
index d2368d6ba5..a59b39cf99 100644
--- a/src/test/regress/sql/strings.sql
+++ b/src/test/regress/sql/strings.sql
@@ -331,3 +331,17 @@ select md5('abcdefghijklmnopqrstuvwxyz') = 'c3fcd3d76192e4007dfb496cca67e13b' AS
select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789') = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890') = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";
+
+select md5(''::bytea) = 'd41d8cd98f00b204e9800998ecf8427e' AS "TRUE";
+
+select md5('a'::bytea) = '0cc175b9c0f1b6a831c399e269772661' AS "TRUE";
+
+select md5('abc'::bytea) = '900150983cd24fb0d6963f7d28e17f72' AS "TRUE";
+
+select md5('message digest'::bytea) = 'f96b697d7cb7938d525a2f31aaf161d0' AS "TRUE";
+
+select md5('abcdefghijklmnopqrstuvwxyz'::bytea) = 'c3fcd3d76192e4007dfb496cca67e13b' AS "TRUE";
+
+select md5('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'::bytea) = 'd174ab98d277d9f5a5611c2c9f419d9f' AS "TRUE";
+
+select md5('12345678901234567890123456789012345678901234567890123456789012345678901234567890'::bytea) = '57edf4a22be3c955ac49da2e2107b67a' AS "TRUE";