Mark Rotteveel wrote 25.09.2022 11:15:
This list is moving to Google Groups, and we'd like you to move with it.
"Join" button in your invitation sends to 404 page.
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Norbert Saint Georges wrote 23.09.2022 14:00:
Thanks Dimitry, but
length(blr=29) = 12 so ISC_TIMESTAMP_TZ_EXPtr.
in which case to use ISC_TIMESTAMP_TZ_Ptr = 10?
You cannot judge by length because it used to be aligned up and may be also
include null indicator. You must rely on metadata
Norbert Saint Georges wrote 23.09.2022 7:26:
which version should be used and in which case should one or the other be used?
decodeTimeTz is used for ISC_TIME_TZ type and decodeTimeTzEx is used for
ISC_TIME_TZ_EX type (SQL_TIME_TZ and SQL_TIME_TZ_EX values in sqltype of
Hello All.
What are rules for plugin's returned value of IAttachment::execute() in the
case when input transaction is not NULL?
Should it return NULL?
Should it return the original transaction?
Should it return current plugin's original transaction (i.e.
YTransaction->next if input
Alex Peshkoff via Firebird-devel wrote 15.09.2022 18:08:
I do not want to say segfault is good thing and will not provide as a sample
trivial things like strcpy() - but almost any function in C library will
segfault when passed wrong address of some data.
strcpy() is a quite bad example
Hello All.
If someone by mistake calls IStatement::execute() providing metadata but no
data buffer, it will pass the values as is to a provider and overall result will
be segfault.
Shouldn't some sanity checks to be performed there?
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Alex Peshkoff via Firebird-devel wrote 15.09.2022 16:14:
On the other hand tomcrypt is successfully used in our sample plugin - which is
problematic with static linking. For me that appears more interesting and useful.
Not to say about code duplication.
Dead code elimination with static
Alex Peshkoff via Firebird-devel wrote 15.09.2022 12:04:
With tommath there are no such issues...
Why don't force build with static libs?
In what way it's better than own dynamic libraries?
Surely no problem with API/ABI.
No mess and vulnerability with dynamic library search path.
Alex Peshkoff via Firebird-devel wrote 15.09.2022 11:08:
Also, it's different in the sense that official package builds and
package tomcrypt, but not tommath.
We did discuss sometimes ago why for universal binary package we have to use
built-in tomcrypt.
Data structures, passed In it's API,
Alex Peshkoff via Firebird-devel wrote 07.09.2022 18:40:
Do not remember - does ClumpletReader already supports getInfo() result format?
Sorry, can't remember.
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Alex Peshkoff via Firebird-devel wrote 07.09.2022 18:26:
Not sure what you mean by 'terminal item', but it may be followed by
isc_info_end if that fits into buffer.
What about two bytes length - it's single-byte item not followed by anything.
see how it's added:
Ok, now see how it is
Hello All.
isc_info_truncated is a terminal item which is NOT followed by two bytes
length, right?
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Alex Peshkoff via Firebird-devel wrote 01.09.2022 18:16:
Suppose adding N buffers for stream data instead current one should not be too
hard to do. But what about API for that, format of data sent to user, etc. -
that should be well though before starting with this.
I was thinking about new
Dimitry Sibiryakov wrote 27.08.2022 16:45:
ISQL Version: WI-T5.0.0.550 Firebird 5.0 Initial Server version: WI-V4.0.1.2631
Firebird 4.0 FireSwarm server 0.3-Devel FireSwarm client 0.3-Devel
===> here fbclient's version is missed <===
Oops, formatting has been screwed. It should b
Hello All,
currently isc_info_firebird_version is formed from engine version, server
version and remote provider version.
I wonder if there should be also the Y-valve version in addition to all that
in the case if third-party network provider is used.
An example:
ISQL Version:
Alex Peshkoff via Firebird-devel wrote 25.08.2022 10:27:
But here are some problems:
- An error when querying service is treated by 99% of callers (starting with
fbsvcmgr) as fatal one. Other errors will not be displayed.
And it is the right way to handle them, IMHO.
- What about warnings
Dmitry Yemanov wrote 25.08.2022 12:34:
Firebird-5.0.0.2816-0-windows-x86-withDebugSymbols.exe
Firebird-5.0.0.2816-0-windows-x86-withDebugSymbols.zip
Firebird-5.0.0.2816-0-windows-x86.exe
Firebird-5.0.0.2816-0-windows-x86.zip
Firebird-5.0.0.2816-0-windows-x64-withDebugSymbols.exe
Alexander Peshkov wrote 24.08.2022 19:06:
On 8/24/22 14:31, Dimitry Sibiryakov wrote:
> Without it services seem to be pretty useless.
I think this to be suggested in devel and if nobody sees problems - feel
free to add a ticket, I will implement it.
Ok. But I don't think that a sim
Alex Peshkoff via Firebird-devel wrote 24.08.2022 17:00:
Sorry, but they are created by 'cp' command ;) One can run them directly.
Wow. That's crazy.
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Alex Peshkoff via Firebird-devel wrote 24.08.2022 16:06:
Same for linux - not stripped binaries provided.
Nope. Firebird-debuginfo-4.0.2.2816-0.amd64.tar.gz contains only extracted
debug symbols, not binaries.
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Mark Rotteveel wrote 24.08.2022 15:32:
If the term is confusing or ambiguous, it already is so in its current form.
Yes, it is. That's why I would suggest to change that.
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Dmitry Yemanov wrote 24.08.2022 14:47:
I would unify the `pdb`, `debuginfo`, etc. into simple `debug` suffix.
Agreed.
And better to keep "debuginfo" verb, IMHO to prevent confusion after
expectation to find "a debug build" in "debug" package.
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Tommi Prami wrote 23.08.2022 5:40:
I was thinking that if there is some kind of header (simple enough) in Firebird
Databases and/or backup files, maybe some one could point me into the right
direction.
No. Of course Firebird database has header page described in ods.h but it has
no
Adriano dos Santos Fernandes wrote 19.08.2022 12:05:
So it would be something like COALESCE.
I think that is the wrong approach for parameters. When deriving a type
for COALESCE, it makes sense to infer the type to the widest possible
type (VARCHAR) to allow all possible stored values to be
Mark Rotteveel wrote 18.08.2022 9:37:
I'd suggest looking at what other database systems that do have named parameters
currently do.
My guess is that they either:
1) don't allow mixing types
2) use the most specific type that is compatible with all positions, otherwise
error
3) use the
Jiří Činčura wrote 16.08.2022 12:02:
Not yet. How would you like to see it ? Monitoring table, session
context variable,
database_info item ? All above ? ;)
Session context variable seems to be a good fit. Monitoring table looks like
overkill. And database_info is inconvenient for end
Adriano dos Santos Fernandes wrote 16.08.2022 3:25:
No, I expect that client parsers may not do unnecessary things, at least
with this statement.
Can we just have named parameters support in Firebird before this feature so
client parser will be not needed at all?..
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Vlad Khorsun wrote 15.08.2022 19:42:
Also, I don't like 'sql' word, especially after 'execute statement' and
'execute
block'. Too much, as for me :) Syntax with 'with' instead of 'execute sql' looks
much better to me, but it is already used in CTE's, thus it seems as not the
best
choice :(
Adriano dos Santos Fernandes wrote 15.08.2022 12:24:
Firebird does not have any support for client named parameters.
IMessageMetadata has field for name which is currently unused. What else
client support do you have on mind?
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Pavel Cisar wrote 10.08.2022 9:36:
I though that when referencing that right to create database should be checked
in the same way as attachment to service manager (which does not use some
database reference passed by user to decide which security db to use)
I would like to repeat: service
Pavel Cisar wrote 09.08.2022 16:14:
I really don't understand WHY it's necessary to authenticate user against some
database for *create database*.
Imagine someone creating thousands of databases without authentication.
It's definitely not necessary to provide any kind of database reference
Alex Peshkoff via Firebird-devel wrote 09.08.2022 6:33:
PPS. If one has access to database.conf to create new alias he definitely has
embedded access to server, i.e. problem appears to be rather artificial.
Consider a shared database hosting where aliases are created by admin for
every
Pavel Zotov wrote 08.08.2022 14:41:
2) we run "create database" statement and specify there alias 'tmp_self',
*without* protocol prefix ('localhost:', 'inet://', 'xnet://'):
Have you forgot that it means embedded mode and user name/password are not
checked at all?
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Vlad Khorsun wrote 05.08.2022 11:17:
It could be compared with last known counters before re-connect,
if necessary.
Bad idea. If database was reloaded counters are reset.
Another way could be to call callback with NULL events and 0 length but I'm not
sure
existing apps is ready to handle
Hello All.
Is there a reason why Remote module doesn't check for current
fb_cancel_disable state before sending fb_cancel_abort packet to server?
I see in JRD sources that ATT_cancel_raise flag is cleaned on
fb_cancel_enable arrival so the deferred cancellation is not the reason.
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Adriano dos Santos Fernandes wrote 15.06.2022 21:56:
Are there any reason for that?
MSYS (and I suspect WSL as well) bash is using unnamed pipes to redirect
input and output of applications into its window. Without considering pipes as
console they are blind.
I know no way to
Adriano dos Santos Fernandes wrote 09.06.2022 14:36:
Self-descriptive record format which makes RDB$FORMATS obsolete and
solve problems with garbage collection etc was suggested by me (for
replication block buffer in the first place but storage can use it as
well).
Putting metadata bytes in
Adriano dos Santos Fernandes wrote 09.06.2022 14:16:
What do you think and are there any active work in this regard?
Using of record encoding instead of record compressing was suggested years
ago by Ann and Jim.
Self-descriptive record format which makes RDB$FORMATS obsolete and solve
Alex Peshkoff via Firebird-devel wrote 02.06.2022 13:01:
It is "ALTER TABLE" which must be executed on replica. Otherwise you'll have
problem with ALTER TABLE ADD FIELD.
Is it impossible to analyze clauses of statement?
Theoretically - yes. On practice it would require full Firebird SQL
Alex Peshkoff via Firebird-devel wrote 02.06.2022 9:31:
ALTER TABLE SET TABLESPACE is tablespaces-related DDL operator - i.e. it should
not be executed on replica. Why conflict?
It is "ALTER TABLE" which must be executed on replica. Otherwise you'll have
problem with ALTER TABLE ADD
Hello All.
How is subj supposed to work? I see that it forces engine to start a
transaction and that's all.
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Hello All.
Shouldn't code for handling isc_dpb_journal, isc_dpb_old_file, etc cleaned
out or someone have plans for their reuse?
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Adriano dos Santos Fernandes wrote 11.05.2022 15:35:
I think we should improve that automatically refreshing roles via AST or
creating some command like ALTER SESSION REFRESH ROLES.
IMHO it is an unnecessary complication with negative effect on performance.
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Roman Simakov wrote 10.05.2022 10:21:
It makes sense. Could you create a ticket?
But what's the point to grant object rights to the role and then grant the
role to public instead of granting the rights to public directly?
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Mark Rotteveel wrote 04.05.2022 9:29:
Use isc_dpb_expected_db with your database name to inform Firebird which
setting from databases.conf should be used during service attach (including
security database).
I assume you mean isc_spb_expected_db, right?
Oh, yes. A tiny mistype.
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Scott Morgan via Firebird-devel wrote 03.05.2022 18:29:
What can you do to get the server's info if you only have per-DB user accounts?
Use isc_dpb_expected_db with your database name to inform Firebird which
setting from databases.conf should be used during service attach (including
Jiří Činčura wrote 25.04.2022 18:23:
What to look for with this error in the server log?
Update to a fresh snapshot I believe.
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Vasiliy Yashkov wrote 11.04.2022 16:52:
What is the right way to throw an exception?
Plugins (as any other DLL) is not supposed to throw exceptions ever.
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Hello.
I've found that for versions 3 and 4 in trace_dsql_prepare()
statement->getText() returning SQL statement text converted into UTF-8 and
getTextUTF8() - returning it converted twice.
It is reproducible even with standard trace plugin (audit log as seen in ANSI
mode):
Statement
Hello.
How long lives the pointer returned by ITraceConnection::getCharSet()?
Can I store it or must copy content into local storage in the instance of
ITracePlugin that is created for this connection?
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Alex Peshkoff via Firebird-devel wrote 31.03.2022 16:08:
The crash happen when a stream of definite data is tried to be compressed.
IMHO, it is hard (if possible at all) to purposefully construct such stream
*from* server to crash or exploit it.
How long should it be? Can it be put into
Alex Peshkoff via Firebird-devel wrote 31.03.2022 15:21:
Note that the crash happen on compression so it doesn't affect Firebird
security.
Did not catch why - we use zlib compression on the wire (since fb3) and in gbak
(since fb4). Both cases are not default but anyway not good.
The
Alex Peshkoff via Firebird-devel wrote 31.03.2022 15:05:
On 3/31/22 11:11, Mark Rotteveel wrote:
A security vulnerability was found in zlib:
https://nakedsecurity.sophos.com/2022/03/29/zlib-data-compressor-fixes-17-year-old-security-bug-patch-errr-now/
Will we include an updated version in
Vlad Khorsun wrote 15.03.2022 18:39:
No need to pollute persistent schema with temporary objects and pay runtime
cost for storing\erasing such definitions.
That's a good occasion for creating a virtual metadata dictionary that
provides records for persistent objects as well as
Adriano dos Santos Fernandes wrote 15.03.2022 15:37:
On 15/03/2022 11:23, Alex Peshkoff via Firebird-devel wrote:
Very interesting - but other name for them should be used. It's too easy
to loose difference between LT & LTT that are absolutely different things.
Maybe just "DECLARE TABLE"
Jiří Činčura wrote 28.02.2022 11:16:
Can somebody explain me how isc_dpb_lc_ctype and isc_dpb_set_db_charset and
isc_dpb_utf8_filename relate to each other.
isc_dbp_lc_ctype establish charsert for all data returned from server (unless
explicitly overridden in message metadata).
Jiří Činčura wrote 28.02.2022 11:10:
If I get pointer to a string in isc_arg_string in status vector the encoding is
UTF8 if isc_dpb_utf8_filename was specified and ANSI/system charset when
isc_dpb_utf8_filename was not specified?
It's encoding should match dpb_lc_ctype setting.
Dmitry Yemanov wrote 15.02.2022 18:14:
Your schema upgrade may change keys from INT to BIGINT (when tables grow more
than expected) or, more usually -- NUMERIC(N, 3) is changed to NUMERIC(N, 5) for
quantities, or NUMERIC(12, N) is changed to NUMERIC(18, N), etc. And it should
be applied to
Dmitry Yemanov wrote 15.02.2022 12:28:
Does anyone think we should investigate this possibility more closely? Any other
comments?
Is "stored keys independent of the declared scale" a really useful and used
feature?
If we prohibit that, the index key can be a plain integer without
Dmitry Yemanov wrote 10.02.2022 18:07:
But as I said and Vlad also said, we can remove roles from key and
verify (with verification cache) after get statement from cache. This
would be better.
Yes, this gets my vote too.
On the other hand ACL verification used to be a known bottleneck in
Alex Peshkoff via Firebird-devel wrote 10.02.2022 17:35:
If we see solid effect from new cache - certainloy, it will be worth to make it
better prepare search key. I.e. let's start from something simple and see does
it make sense.
That's why I suggested to ask kdv for stats: to prevent a
Dmitry Yemanov wrote 10.02.2022 17:28:
Only if such translation is made right. Remember charset introducers.
They're a problem, but it may only cause a cache miss, not a false match, right?
Yes, they can only cause miss but I'm not sure about literals as whole. Are
they stored in
Dmitry Yemanov wrote 10.02.2022 17:13:
Cannot the UTF8-translated SQL text (which is currently inside
Statement::sqlText) be the key, to avoid dependency on the charset? I don't
think that semantically different statements may have the same UTF8
representation. However, it would make sense to
Dmitry Yemanov wrote 10.02.2022 16:43:
I'm not sure I get why security credentials should affect the cache at all. From
the runtime POV, all BLR/SQL operations (current_user/current_role/rdb$*_roles)
are redirected to Attachment, AFAIK we don't store anything role-specific inside
the statement
Vlad Khorsun wrote 10.02.2022 16:30:
More, I already implemented simple cache of prepared statements near 5 years
ago and I know when it is useful :) It was not ported into Firebird because of
limited usage and its simplicity. But customer which uses it, was very happy.
Isn't it inside of
Adriano dos Santos Fernandes wrote 10.02.2022 14:08:
Some times yes, some times no (it's identical statement reprepared or
executed).
In this case you could ask IBSurgeon for their statistics about query
prepare/execute ratio beforehand to estimate possible gain from the cache. IIRC
during
Adriano dos Santos Fernandes wrote 10.02.2022 13:56:
But it's not surprise that many applications are not well coded and
sometimes does not do this. Competitor DBMSs has cache and works well in
this case too.
Such applications used to build the queries ad-hock with data as literals.
The
Alex Peshkoff via Firebird-devel wrote 10.02.2022 10:59:
If\when shared metadata will be implemented - will it be possible to
use cached compiled statement created in one attachment to use by another
attachment ?
If we need to take roles into an account - only for attachment with same USER.
Alex Peshkoff via Firebird-devel wrote 04.02.2022 14:37:
What to do with values of tags that are unknown (other version or
provider-specific)? I see no way to tell on destination side if they arrived
as is or were transliterated.
Take a look at checkTag() functions in IntlParametersBlock.cpp.
Alex Peshkoff via Firebird-devel wrote 04.02.2022 12:59:
I suppose you suggest to fallback to existing way when there is no
isc_dpb_lc_ctype in DPB?
I suggest nothing but wonder what to do if there is no isc_dpb_utf8 tag in
DPB but isc_dpb_lc_ctype is.
Is it right to still consider
Alex Peshkoff via Firebird-devel wrote 04.02.2022 9:53:
Remember me please why isc_lc_ctype isn't used to determine encoding of
database name and DPB values?
Due to limitations of WideCharToMultiByte API. (with posix iconv this cabe easily done)
Do you mean that client would have to
Hello All.
Remember me please why isc_lc_ctype isn't used to determine encoding of
database name and DPB values?
BTW, service name during service attach isn't converted into UTF-8 at all.
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Adriano dos Santos Fernandes wrote 24.01.2022 11:52:
If you do shutdown before disconnect, I'm not sure the software is
written correctly.
In this case if you do release I think it's going to work.
How many examples and real life application check status after detach and do
release on
Adriano dos Santos Fernandes wrote 24.01.2022 11:37:
If Firebird had an Engine class with state inside that instance, things
would certainly be easy.
But we rely on many global/static state.
It's not very simple to just reload engine after shutdown when the
library was not unloaded.
Adriano dos Santos Fernandes wrote 22.01.2022 13:37:
After calling IDispatch::shutdown() an attempt to call
IAttachment::detach()
in embedded mode returns error "Database shutdown". But... why?
Isn't IDispatch::shutdown already causes all databases to be disconnected?
In
Hello All.
After calling IDispatch::shutdown() an attempt to call IAttachment::detach()
in embedded mode returns error "Database shutdown". But... why?
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Dimitry Sibiryakov wrote 21.01.2022 21:19:
initialization in the entry point and finalization in doCleanup for all
plugin-related things and initialization in constructor and finalization in
destructor for every library-related things should be the right behavior for
every plugin including
Adriano dos Santos Fernandes wrote 21.01.2022 20:08:
1) Disable unload timer in PluginManager in MacOS.
2) Makes it possible for engine plugin to relive when it was shut down
and its entry point is called again. I have tested this solution and it
seems to work, but some details must be more
Alex Peshkoff via Firebird-devel wrote 20.01.2022 10:43:
Are you sure?
fbs3 /usr/home/firebird/HEAD/gen/Debug/firebird/bin # ./isql -user РусLat
-password abc localhost:employee
Database: localhost:employee, User: РусLat
Try, for example, "test-user". The only special symbols allowed in
Alex Peshkoff via Firebird-devel wrote 18.01.2022 18:03:
fb_utils::dpbItemUpper(userName);
That's quite strange routine. It will uppercase the string even if it
contains ASCII letters disallowed for not-delimited SQL identifier (which user
name is).
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Hello All.
At which point user name is uppercased during attachDatabase() call?
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Mark Rotteveel wrote 14.01.2022 17:21:
Also when you use a DPB v2, it is wide, so accepts far larger values than you'll
ever logically need for a user name.
The only problem that fbclient doesn't use it during conversion from
user-provided DPB into sent-to-server DPB and in server user name
Mark Rotteveel wrote 14.01.2022 17:06:
Also shouldn't it to be returned if user name received in DPB (after
conversion into UTF-8) doesn't fit as well?
I'm not sure what you mean with that.
Currently if someone put into DPB non-ASCII user name and during conversion
into UTF-8 it
Hello All.
Shouldn't subj text to be corrected?
Also shouldn't it to be returned if user name received in DPB (after
conversion into UTF-8) doesn't fit as well?
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Mark Rotteveel wrote 06.01.2022 13:06:
BTW: I think in most cases you should be able to infer from the socket error if
the problem occurred on sending or on reading data (at least, when using
blocking socket reads/writes, not sure about non-blocking).
It is not true:
Jiří Činčura wrote 05.01.2022 19:44:
You're probably thinking about something in client library?
Yes. You probably have the same problem in your provider, no?
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Hello All.
It is documented that successful return from function send() for TCP doesn't
mean successful delivery of data to the target host, mere put them into socket
buffer.
If op_commit is sent but network error appear during waiting for response
there can be two cases:
1)
Hello All.
It is documented that successful return from function send() for TCP doesn't
mean successful delivery of data to the target host, mere put them into socket
buffer.
If op_commit is sent but network error appear during waiting for response
there can be two cases:
1)
Paul Reeves wrote 22.12.2021 14:12:
Is there any reason why set_build_target only tests for VS150COMNTOOLS ?
I'd like to add tests for VS160COMNTOOLS and VS170COMNTOOLS, unless there are
any objections.
Better question if this check is right because existence of some
redistributables has
Jiří Činčura wrote 21.12.2021 16:12:
That's what I see in WireShark.
It looks like leading three zero bytes disappeared in the dump somehow. Were
they in a previous packet?
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Alex Peshkoff via Firebird-devel wrote 21.12.2021 12:06:
this I can't explain right now, looks like 3 last 00 got lost somehow
Perhaps you mistakenly used routine for storing INF values which throw away
leading zeros reducing value to minimal necessary number of bytes.
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Norbert Saint Georges wrote 20.12.2021 12:40:
a varbinary has a subtype of 1 and not 0 (binary) normal?
Yes. According to README.data_types.txt subtype 1 is what distinguishes
VARBINARY from VARCHAR.
Though at API level subtype is returned as 0 because of limitations of engine
internals.
Dmitry Yemanov wrote 20.12.2021 11:51:
What would you expect from the "row count" requested for a non-scrollable
cursor?
Even non-scrollable cursors can know total number of records if plan SORT is
used or they are fetched to the end but I think that isc_infona is the right
answer in all
Dimitry Sibiryakov wrote 19.12.2021 21:19:
Bennie Coetzer wrote 19.12.2021 20:08:
is there any explanation of what the error code means?
In iberror.h: isc_login_error = 335545106L
Corresponding text: "Error occurred during login, please check server
firebir
Adriano dos Santos Fernandes wrote 13.12.2021 12:17:
Database administrator does not always have access to full server.
And database developers create code (or declare external routines) in
database.
In well organized environment they don't. Developers just prepare script that
is applied
Alex Peshkoff via Firebird-devel wrote 13.12.2021 12:05:
Don't forget about subj: this UDR is needed only to let QA suite to check
exact parameters of Firebird config. It does need "any known setting".
As soon as we put it into our std distro (even as an exanple) it's loosing that
Vlad Khorsun wrote 13.12.2021 11:53:
13.12.2021 12:45, Dimitry Sibiryakov пишет:
Vlad Khorsun wrote 13.12.2021 10:32:
Our IFirebirdConf implementation
is not generic enough to provide way to get value of any known setting as
string.
IMHO it is ok for such UDR to return only subset
Vlad Khorsun wrote 13.12.2021 10:32:
Our IFirebirdConf implementation
is not generic enough to provide way to get value of any known setting as
string.
IMHO it is ok for such UDR to return only subset of known parameters
converting them into strings by hand.
--
WBR, SD.
Alex Peshkoff via Firebird-devel wrote 13.12.2021 11:14:
I suppose DS meant something like this:
# ./isql -user guest employee
Database: employee, User: GUEST
SQL> select sum_args(1,2,3) from rdb$database;
Statement failed, SQLSTATE = 28000
no permission for EXECUTE access to FUNCTION SUM_ARGS
Alex Peshkoff via Firebird-devel wrote 12.12.2021 18:52:
If it does not return sensitive information, I see no problem in add it to
examples UDR project.
With a check for SYSDBA I see no security risk with this UDR
Isn't GRANT EXECUTE to RDB$ADMIN enough? Or UDRs are not subject of SQL
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