Commit Graph

103 Commits

Author SHA1 Message Date
Bruce Momjian
5d950e3b0c Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
Itagaki Takahiro
d3c1265443 Don't raise "identifier will be truncated" messages in dblink
except creating new connections.
2010-11-25 19:40:58 +09:00
Robert Haas
4343c0e546 Expose quote_literal_cstr() from core.
This eliminates the need for inefficient implementions of this
functionality in both contrib/dblink and contrib/tablefunc, so remove
them.  The upcoming patch implementing an in-core format() function
will also require this functionality.

In passing, add some regression tests.
2010-11-20 10:04:48 -05:00
Magnus Hagander
9f2e211386 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
Bruce Momjian
239d769e7e pgindent run for 9.0, second run 2010-07-06 19:19:02 +00:00
Tom Lane
c0989c67fa Change the interpretation of the primary_key_attnums parameter of
dblink_build_sql_insert() and related functions.  Now the column numbers
are treated as logical not physical column numbers.  This will provide saner
behavior in the presence of dropped columns; furthermore, if we ever get
around to allowing rearrangement of logical column ordering, the original
definition would become nearly untenable from a usability standpoint.
Per recent discussion of dblink's handling of dropped columns.
Not back-patched for fear of breaking existing applications.
2010-06-15 20:29:01 +00:00
Tom Lane
3b3706d2cf Fix dblink_build_sql_insert() and related functions to handle dropped
columns correctly.  In passing, get rid of some dead logic in the
underlying get_sql_insert() etc functions --- there is no caller that
will pass null value-arrays to them.

Per bug report from Robert Voinea.
2010-06-15 19:04:15 +00:00
Tom Lane
48a7245391 Consolidate and improve checking of key-column-attnum arguments for
dblink_build_sql_insert() and related functions.  In particular, be sure to
reject references to dropped and out-of-range column numbers.  The numbers
are still interpreted as physical column numbers, though, for backward
compatibility.

This patch replaces Joe's patch of 2010-02-03, which handled only some aspects
of the problem.
2010-06-15 16:22:19 +00:00
Tom Lane
6bbaa3148d Rearrange dblink's dblink_build_sql_insert() and related routines to open and
lock the target relation just once per SQL function call.  The original coding
obtained and released lock several times per call.  Aside from saving a
not-insignificant number of cycles, this eliminates possible race conditions
if someone tries to modify the relation's schema concurrently.  Also
centralize locking and permission-checking logic.

Problem noted while investigating a trouble report from Robert Voinea --- his
problem is still to be fixed, though.
2010-06-14 20:49:33 +00:00
Itagaki Takahiro
5a41c317c5 Avoid "identifier will be truncated" warning in dblink
when connection string is longer than NAMEDATALEN.
The previous fix for long connection name broke the behavior.
2010-06-09 03:39:26 +00:00
Itagaki Takahiro
a624356072 Fix connection leak in dblink when dblink_connect() or dblink_connect_u()
end with "duplicate connection name" errors.

Backported to release 7.4.
2010-06-09 00:56:02 +00:00
Itagaki Takahiro
7dff7260af Fix dblink to treat connection names longer than NAMEDATALEN-2 (62 bytes).
Now long names are adjusted with truncate_identifier() and NOTICE messages
are raised if names are actually truncated.

Backported to release 8.0.
2010-06-03 09:38:33 +00:00
Bruce Momjian
65e806cba1 pgindent run for 9.0 2010-02-26 02:01:40 +00:00
Itagaki Takahiro
912eb88c7d Remove useless codes to initialize TupleDesc from dblink_exec. 2010-02-24 05:20:49 +00:00
Robert Haas
e26c539e9f Wrap calls to SearchSysCache and related functions using macros.
The purpose of this change is to eliminate the need for every caller
of SearchSysCache, SearchSysCacheCopy, SearchSysCacheExists,
GetSysCacheOid, and SearchSysCacheList to know the maximum number
of allowable keys for a syscache entry (currently 4).  This will
make it far easier to increase the maximum number of keys in a
future release should we choose to do so, and it makes the code
shorter, too.

Design and review by Tom Lane.
2010-02-14 18:42:19 +00:00
Joe Conway
fdac8cf998 Check to ensure the number of primary key fields supplied does not
exceed the total number of non-dropped source table fields for
dblink_build_sql_*(). Addresses bug report from Rushabh Lathia.

Backpatch all the way to the 7.3 branch.
2010-02-03 23:01:11 +00:00
Joe Conway
56cbb611ec Rewrite dblink_record_internal() and dblink_fetch() to use a tuplestore
(SFRM_Materialize mode) to return tuples. Since we don't return from the
dblink function in tuplestore mode, release the PGresult with a PG_CATCH
block on error. Also rearrange to share the same code to materialize the
tuplestore. Patch by Takahiro Itagaki.
2010-01-24 22:19:38 +00:00
Bruce Momjian
0239800893 Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
Heikki Linnakangas
84d723b6ce Previous fix for temporary file management broke returning a set from
PL/pgSQL function within an exception handler. Make sure we use the right
resource owner when we create the tuplestore to hold returned tuples.

Simplify tuplestore API so that the caller doesn't need to be in the right
memory context when calling tuplestore_put* functions. tuplestore.c
automatically switches to the memory context used when the tuplestore was
created. Tuplesort was already modified like this earlier. This patch also
removes the now useless MemoryContextSwitch calls from callers.

Report by Aleksei on pgsql-bugs on Dec 22 2009. Backpatch to 8.1, like
the previous patch that broke this.
2009-12-29 17:40:59 +00:00
Joe Conway
d6119d8091 plug dblink resource leak
dblink generates orphaned connections when called with a connection string,
fail_on_error = true, and an ERROR occurs. Discovery and patch by
Tatsuhito Kasahara. Introduced in 8.4.
2009-09-12 23:20:52 +00:00
Joe Conway
f4095b4c4b Implement dblink_get_notify().
Adds the ability to retrieve async notifications using dblink,
via the addition of the function dblink_get_notify(). Original patch
by Marcus Kempe, suggestions by Tom Lane and Alvaro Herrera, patch
review and adjustments by Joe Conway.
2009-08-05 16:11:07 +00:00
Bruce Momjian
d747140279 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list
provided by Andrew.
2009-06-11 14:49:15 +00:00
Tom Lane
f3e122fcdf Restore dblink_current_query() to being a C-language function, so as to not
create an ABI break between 8.3 and 8.4.  It is still just a wrapper around
the built-in current_query() function, but at a different implementation
level.  Per my proposal.

Note: this change doesn't break 8.4beta installations, since their
SQL-language definition of the function still works fine.
2009-06-09 17:41:02 +00:00
Joe Conway
e5de601267 Default client encoding to server encoding for dblink connections. Addresses
issue raised by Ruzsinszky Attila and confirmed by others.

 ----------------------------------------------------------------------
2009-06-09 16:35:36 +00:00
Joe Conway
4334695b30 Add support for using SQL/MED compliant FOREIGN DATA WRAPPER, SERVER,
and USER MAPPING as method to supply dblink connect parameters. Per
mailing list and PGCon discussions.
2009-06-06 21:27:56 +00:00
Joe Conway
db02073305 Fix dblink_get_result() as reported by Oleksiy Shchukin. Refactor a bit
while we're at it per request by Tom Lane. Specifically, don't try to
perform dblink_send_query() via dblink_record_internal() -- it was
inappropriate and ugly.
2009-06-02 03:21:56 +00:00
Bruce Momjian
511db38ace Update copyright for 2009. 2009-01-01 17:24:05 +00:00
Tom Lane
76cc2fe6a1 Fix dblink and tablefunc to not return with the wrong CurrentMemoryContext.
Per buildfarm results.
2008-11-30 23:23:52 +00:00
Tom Lane
cae7ad906a Fix dblink_connect() so that it verifies that a password is supplied in the
conninfo string *before* trying to connect to the remote server, not after.
As pointed out by Marko Kreen, in certain not-very-plausible situations
this could result in sending a password from the postgres user's .pgpass file,
or other places that non-superusers shouldn't have access to, to an
untrustworthy remote server.  The cleanest fix seems to be to expose libpq's
conninfo-string-parsing code so that dblink can check for a password option
without duplicating the parsing logic.

Joe Conway, with a little cleanup by Tom Lane
2008-09-22 13:55:14 +00:00
Joe Conway
c0241b9573 When an ERROR happens on a dblink remote connection, take
pains to pass the ERROR message components locally, including
using the passed SQLSTATE. Also wrap the passed info in an
appropriate CONTEXT message. Addresses complaint by Henry
Combrinck. Joe Conway, with much good advice from Tom Lane.
2008-07-03 03:56:57 +00:00
Bruce Momjian
4f22db501e Remove unneed #include now that current_query() has moved to the backend. 2008-04-04 17:02:56 +00:00
Bruce Momjian
f96928fde9 Implement current_query(), that shows the currently executing query.
At the same time remove dblink/dblink_current_query() as it is no longer
necessary
*BACKWARD COMPATIBILITY ISSUE* for dblink

Tomas Doran
2008-04-04 16:57:21 +00:00
Alvaro Herrera
73b0300b2a Move the HTSU_Result enum definition into snapshot.h, to avoid including
tqual.h into heapam.h.  This makes all inclusion of tqual.h explicit.

I also sorted alphabetically the includes on some source files.
2008-03-26 21:10:39 +00:00
Tom Lane
220db7ccd8 Simplify and standardize conversions between TEXT datums and ordinary C
strings.  This patch introduces four support functions cstring_to_text,
cstring_to_text_with_len, text_to_cstring, and text_to_cstring_buffer, and
two macros CStringGetTextDatum and TextDatumGetCString.  A number of
existing macros that provided variants on these themes were removed.

Most of the places that need to make such conversions now require just one
function or macro call, in place of the multiple notational layers that used
to be needed.  There are no longer any direct calls of textout or textin,
and we got most of the places that were using handmade conversions via
memcpy (there may be a few still lurking, though).

This commit doesn't make any serious effort to eliminate transient memory
leaks caused by detoasting toasted text objects before they reach
text_to_cstring.  We changed PG_GETARG_TEXT_P to PG_GETARG_TEXT_PP in a few
places where it was easy, but much more could be done.

Brendan Jurd and Tom Lane
2008-03-25 22:42:46 +00:00
Tom Lane
66661858ae Use an indexscan not a heapscan to search pg_index in get_pkey_attnames.
Noted while looking for heapscans that might need to start from block
zero.
2008-01-14 02:49:47 +00:00
Tom Lane
919c9f6cce The original patch to disallow non-passworded connections to non-superusers
failed to cover all the ways in which a connection can be initiated in dblink.
Plug the remaining holes.  Also, disallow transient connections in functions
for which that feature makes no sense (because they are only sensible as
part of a sequence of operations on the same connection).  Joe Conway

Security: CVE-2007-6601
2008-01-03 21:27:59 +00:00
Bruce Momjian
9098ab9e32 Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
Bruce Momjian
fdf5a5efb7 pgindent run for 8.3. 2007-11-15 21:14:46 +00:00
Tom Lane
a41e46b261 Require SELECT privilege on a table to do dblink_get_pkey(). This is
not all that exciting when the system catalogs are readable by all,
but some people try to lock them down, and would not like this sort of
end run ...
2007-08-27 01:24:50 +00:00
Joe Conway
d92583f88e Restrict non-superusers to password authenticated connections
to prevent possible escalation of privilege. Provide new SECURITY
DEFINER functions with old behavior, but initially REVOKE ALL
from public for these functions. Per list discussion and design
proposed by Tom Lane. A different approach will be used for
back-branches, committed separately.
2007-07-08 17:12:38 +00:00
Tom Lane
3e23b68dac Support varlena fields with single-byte headers and unaligned storage.
This commit breaks any code that assumes that the mere act of forming a tuple
(without writing it to disk) does not "toast" any fields.  While all available
regression tests pass, I'm not totally sure that we've fixed every nook and
cranny, especially in contrib.

Greg Stark with some help from Tom Lane
2007-04-06 04:21:44 +00:00
Peter Eisentraut
16059d39a0 Replace some strncpy() by strlcpy(). 2007-02-07 00:52:35 +00:00
Bruce Momjian
29dccf5fe0 Update CVS HEAD for 2007 copyright. Back branches are typically not
back-stamped for this.
2007-01-05 22:20:05 +00:00
Tom Lane
2315df21f8 Fix a couple of places that were assuming debug_query_string couldn't
be NULL ... seems an unsafe assumption.
2006-10-19 19:53:03 +00:00
Bruce Momjian
f99a569a2e pgindent run for 8.2. 2006-10-04 00:30:14 +00:00
Joe Conway
52a3ed9fac Added async query capability. Original patch by
Kai Londenberg, modified by Joe Conway
2006-09-02 21:11:15 +00:00
Bruce Momjian
fa601357fb Sort reference of include files, "A" - "F". 2006-07-11 16:35:33 +00:00
Joe Conway
1d895f426f - During dblink_open, if transaction state was IDLE, force cursor count to
initially be 0. This is needed as a previous ABORT might have wiped out
  an automatically opened transaction without maintaining the cursor count.
- Fix regression test expected file for the correct ERROR message, which
  we now get given the above bug fix.
2006-06-21 16:43:11 +00:00
Tom Lane
a0ffab351e Magic blocks don't do us any good unless we use 'em ... so install one
in every shared library.
2006-05-30 22:12:16 +00:00
Bruce Momjian
f3d99d160d Add CVS tag lines to files that were lacking them. 2006-03-11 04:38:42 +00:00