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Fix for rearranging encoding id ISO-8859-5 to ISO-8859-8.

Browse Source 
Also make the code more robust by searching for target encoding
in the internal charset map.

Problem reported by Sagi Bashari on 2005/12/21.
See "[BUGS] BUG #2120: Crash when doing UTF8<->ISO_8859_8 encoding conversion"
on pgsql-bugs list for more details.
This commit is contained in:
Tatsuo Ishii 2005-12-23 02:11:02 +00:00
parent ea9b028dc7
commit dcc7da8d5e
1 changed files with 27 additions and 18 deletions
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45
src/backend/utils/mb/conversion_procs/utf8_and_iso8859/utf8_and_iso8859.c
View File

@ -6,7 +6,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/mb/conversion_procs/utf8_and_iso8859/utf8_and_iso8859.c,v 1.16 2005/11/22 18:17:26 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/mb/conversion_procs/utf8_and_iso8859/utf8_and_iso8859.c,v 1.17 2005/12/23 02:11:02 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -68,15 +68,6 @@ typedef struct
} pg_conv_map;
static pg_conv_map maps[] = {
{PG_SQL_ASCII}, /* SQL/ASCII */
{PG_EUC_JP}, /* EUC for Japanese */
{PG_EUC_CN}, /* EUC for Chinese */
{PG_EUC_KR}, /* EUC for Korean */
{PG_EUC_TW}, /* EUC for Taiwan */
{PG_JOHAB}, /* EUC for Korean JOHAB */
{PG_UTF8}, /* Unicode UTF8 */
{PG_MULE_INTERNAL}, /* Mule internal code */
{PG_LATIN1}, /* ISO-8859-1 Latin 1 */
{PG_LATIN2, LUmapISO8859_2, ULmapISO8859_2,
sizeof(LUmapISO8859_2) / sizeof(pg_local_to_utf),
sizeof(ULmapISO8859_2) / sizeof(pg_utf_to_local)}, /* ISO-8859-2 Latin 2 */
@ -104,12 +95,6 @@ static pg_conv_map maps[] = {
{PG_LATIN10, LUmapISO8859_16, ULmapISO8859_16,
sizeof(LUmapISO8859_16) / sizeof(pg_local_to_utf),
sizeof(ULmapISO8859_16) / sizeof(pg_utf_to_local)}, /* ISO-8859-16 Latin 10 */
{PG_WIN1256}, /* windows-1256 */
{PG_WIN1258}, /* Windows-1258 */
{PG_WIN874}, /* windows-874 */
{PG_KOI8R}, /* KOI8-R */
{PG_WIN1251}, /* windows-1251 */
{PG_WIN866}, /* (MS-DOS CP866) */
{PG_ISO_8859_5, LUmapISO8859_5, ULmapISO8859_5,
sizeof(LUmapISO8859_5) / sizeof(pg_local_to_utf),
sizeof(ULmapISO8859_5) / sizeof(pg_utf_to_local)}, /* ISO-8859-5 */
@ -131,11 +116,23 @@ iso8859_to_utf8(PG_FUNCTION_ARGS)
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
int i;
Assert(PG_GETARG_INT32(1) == PG_UTF8);
Assert(len >= 0);
LocalToUtf(src, dest, maps[encoding].map1, maps[encoding].size1, encoding, len);
for (i=0;i<sizeof(maps)/sizeof(pg_conv_map);i++)
{
if (encoding == maps[i].encoding)
{
LocalToUtf(src, dest, maps[i].map1, maps[i].size1, encoding, len);
PG_RETURN_VOID();
}
}
ereport(ERROR,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("unexpected encoding id %d for ISO-8859 charsets", encoding)));
PG_RETURN_VOID();
}
@ -147,11 +144,23 @@ utf8_to_iso8859(PG_FUNCTION_ARGS)
unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
int len = PG_GETARG_INT32(4);
int i;
Assert(PG_GETARG_INT32(0) == PG_UTF8);
Assert(len >= 0);
UtfToLocal(src, dest, maps[encoding].map2, maps[encoding].size2, len);
for (i=0;i<sizeof(maps)/sizeof(pg_conv_map);i++)
{
if (encoding == maps[i].encoding)
{
UtfToLocal(src, dest, maps[i].map2, maps[i].size2, len);
PG_RETURN_VOID();
}
}
ereport(ERROR,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("unexpected encoding id %d for ISO-8859 charsets", encoding)));
PG_RETURN_VOID();
}