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Use gmtime_r() and localtime_r() instead of gmtime() and localtime(),
for thread-safety.
There are a few affected calls in libpq and ecpg's libpgtypes, which
are probably effectively bugs, because those libraries already claim
to be thread-safe.
There is one affected call in the backend. Most of the backend
otherwise uses the custom functions pg_gmtime() and pg_localtime(),
which are implemented differently.
While we're here, change the call in the backend to gmtime*() instead
of localtime*(), since for that use time zone behavior is irrelevant,
and this side-steps any questions about when time zones are
initialized by localtime_r() vs localtime().
Portability: gmtime_r() and localtime_r() are in POSIX but are not
available on Windows. Windows has functions gmtime_s() and
localtime_s() that can fulfill the same purpose, so we add some small
wrappers around them. (Note that these *_s() functions are also
different from the *_s() functions in the bounds-checking extension of
C11. We are not using those here.)
On MinGW, you can get the POSIX-style *_r() functions by defining
_POSIX_C_SOURCE appropriately before including <time.h>. This leads
to a conflict at least in plpython because apparently _POSIX_C_SOURCE
gets defined in some header there, and then our replacement
definitions conflict with the system definitions. To avoid that sort
of thing, we now always define _POSIX_C_SOURCE on MinGW and use the
POSIX-style functions here.
Reviewed-by: Stepan Neretin <sncfmgg@gmail.com>
Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Reviewed-by: Thomas Munro <thomas.munro@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/eba1dc75-298e-4c46-8869-48ba8aad7d70@eisentraut.org
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Not all messages that libpq received from the server would be sent
through our message tracing logic. This commit tries to fix that by
introducing a new function pqParseDone which make it harder to forget
about doing so.
The messages that we now newly send through our tracing logic are:
- CopyData (received by COPY TO STDOUT)
- Authentication requests
- NegotiateProtocolVersion
- Some ErrorResponse messages during connection startup
- ReadyForQuery when received after a FunctionCall message
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS+YWXBhOGo+Y1YecLgknF3g@mail.gmail.com
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Since these are single bytes instead of v2 or v3 messages they need
custom tracing logic. These "messages" don't even have official names
in the protocol specification, so I (Jelte) called them SSLResponse and
GSSENCResponse here.
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS+YWXBhOGo+Y1YecLgknF3g@mail.gmail.com
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If tracing was enabled during connection startup, these messages would
previously be listed in the trace output as something like this:
F 54 Unknown message: 70
mismatched message length: consumed 4, expected 54
With this commit their type and contents are now correctly listed:
F 36 StartupMessage 3 0 "user" "foo" "database" "alvherre"
F 54 SASLInitialResponse "SCRAM-SHA-256" 32 'n,,n=,r=nq5zEPR/VREHEpOAZzH8Rujm'
F 108 SASLResponse 'c=biws,r=nq5zEPR/VREHEpOAZzH8RujmVtWZDQ8glcrvy9OMNw7ZqFUn,p=BBwAKe0WjSvigB6RsmmArAC+hwucLeuwJrR5C/HQD5M='
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS+YWXBhOGo+Y1YecLgknF3g@mail.gmail.com
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libpq tracing via PQtrace would uselessly print the wrong thing for
these types of messages. With this commit, their type and contents
would be correctly listed. (This can be verified with PQconnectStart(),
but we don't use that in libpq_pipeline, so I (Álvaro) haven't bothered
to add any tests.)
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS+YWXBhOGo+Y1YecLgknF3g@mail.gmail.com
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In future commits we're going to trace authentication related messages.
Some of these messages contain challenge bytes as part of a
challenge-response flow. Since these bytes are different for every
connection, we want to normalize them when the PQTRACE_REGRESS_MODE
trace flag is set. This commit modifies pqTraceOutputNchar to take a
suppress argument, which makes it possible to do so.
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Discussion: https://postgr.es/m/CAGECzQSoPHtZ4xe0raJ6FYSEiPPS+YWXBhOGo+Y1YecLgknF3g@mail.gmail.com
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libpq's pqTraceOutputMessage() used to look like this:
case 'Z': /* Ready For Query */
pqTraceOutputZ(conn->Pfdebug, message, &logCursor);
break;
Commit f4b54e1ed98 introduced macros for protocol characters, so now
it looks like this:
case PqMsg_ReadyForQuery:
pqTraceOutputZ(conn->Pfdebug, message, &logCursor);
break;
But this introduced a disconnect between the symbol in the switch case
and the function name to be called, so this made the manageability of
this file a bit worse.
This patch changes the function names to match, so now it looks like
this:
case PqMsg_ReadyForQuery:
pqTraceOutput_ReadyForQuery(conn->Pfdebug, message, &logCursor);
break;
(This also improves the readability of the file in general, since some
function names like "pqTraceOutputt" were a little hard to read
accurately.)
Some protocol characters have different meanings to and from the
server. The old code structure had a common function for both, for
example, pqTraceOutputD(). The new structure splits this up into
separate ones to match the protocol message name, like
pqTraceOutput_Describe() and pqTraceOutput_DataRow().
Reviewed-by: Yugo NAGATA <nagata@sraoss.co.jp>
Discussion: https://www.postgresql.org/message-id/flat/575e4f9d-acfe-45e3-b7f1-7e32c579090e%40eisentraut.org
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Reported-by: Michael Paquier
Discussion: https://postgr.es/m/ZZKTDPxBBMt3C0J9@paquier.xyz
Backpatch-through: 12
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This commit introduces descriptively-named macros for the
identifiers used in wire protocol messages. These new macros are
placed in a new header file so that they can be easily used by
third-party code.
Author: Dave Cramer
Reviewed-by: Alvaro Herrera, Tatsuo Ishii, Peter Smith, Robert Haas, Tom Lane, Peter Eisentraut, Michael Paquier
Discussion: https://postgr.es/m/CADK3HHKbBmK-PKf1bPNFoMC%2BoBt%2BpD9PH8h5nvmBQskEHm-Ehw%40mail.gmail.com
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Author: Alexander Lakhin
Discussion: https://postgr.es/m/699beab4-a6ca-92c9-f152-f559caf6dc25@gmail.com
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Backpatch-through: 11
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Backpatch-through: 10
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We have a dozen PQset*() functions. PQresultSetInstanceData() and this
were the libpq setter functions having a different word order. Adopt
the majority word order.
Reviewed by Alvaro Herrera and Robert Haas, though this choice of name
was not unanimous.
Discussion: https://postgr.es/m/20210605060555.GA216695@rfd.leadboat.com
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This avoids a warning under MinGW versions having gettimeofday(), per
buildfarm member walleye.
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Also "make reformat-dat-files".
The only change worthy of note is that pgindent messed up the formatting
of launcher.c's struct LogicalRepWorkerId, which led me to notice that
that struct wasn't used at all anymore, so I just took it out.
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Was present in original commit
198b3716dba68544b55cb97bd120738a86d5df2d but apparently never used.
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A (relatively minor) annoyance of ErrorResponse/NoticeResponse messages
as printed by PQtrace() is that their length might vary when we move
error messages from one source file to another, one function to another,
or even when their location line numbers change number of digits.
To avoid having to adjust expected files for some tests, make the
regress mode of PQtrace() suppress the length word of NoticeResponse and
ErrorResponse messages.
Discussion: https://postgr.es/m/20210402023010.GA13563@alvherre.pgsql
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
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It seems that in MSVC timeval's tv_sec field is of type long.
localtime() takes a time_t pointer. Since long is 32-bit even on 64-bit
builds in MSVC, passing a long pointer instead of the correct time_t
pointer generated a compiler warning. Fix that.
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/CAApHDvoRG25X_=ZCGSPb4KN_j2iu=G2uXsRSg8NBZeuhkOSETg@mail.gmail.com
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It's misplaced there -- it's not libpq's output stream to tweak in that
way. In particular, POSIX says that it has to be called before any
other operation on the file, so if a stream previously used by the
calling application, bad things may happen.
Put setvbuf() in libpq_pipeline for good measure.
Also, reduce fopen(..., "w+") to just fopen(..., "w") in
libpq_pipeline.c. It's not clear that this fixes anything, but we don't
use w+ anywhere.
Per complaints from Tom Lane.
Discussion: https://postgr.es/m/3337422.1617229905@sss.pgh.pa.us
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We must cast the arguments of <ctype.h> functions to unsigned
char to avoid problems where char is signed.
Speaking of which, considering that this *is* a <ctype.h> function,
it's rather remarkable that we aren't seeing more complaints about
not having included that header.
Per buildfarm.
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Remove confusion between time_t and pg_time_t; neither
gettimeofday() nor localtime() deal in the latter.
libpq indeed has no business using <pgtime.h> at all.
Use snprintf not sprintf, to ensure we can't overrun the
supplied buffer. (Unlikely, but let's be safe.)
Per buildfarm.
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Transform the PQtrace output format from its ancient (and mostly
useless) byte-level output format to a logical-message-level output,
making it much more usable. This implementation allows the printing
code to be written (as it indeed was) by looking at the protocol
documentation, which gives more confidence that the three (docs, trace
code and actual code) actually match.
Author: 岩田 彩 (Aya Iwata) <iwata.aya@fujitsu.com>
Reviewed-by: 綱川 貴之 (Takayuki Tsunakawa) <tsunakawa.takay@fujitsu.com>
Reviewed-by: Kirk Jamison <k.jamison@fujitsu.com>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: 黒田 隼人 (Hayato Kuroda) <kuroda.hayato@fujitsu.com>
Reviewed-by: "Nagaura, Ryohei" <nagaura.ryohei@jp.fujitsu.com>
Reviewed-by: Ryo Matsumura <matsumura.ryo@fujitsu.com>
Reviewed-by: Greg Nancarrow <gregn4422@gmail.com>
Reviewed-by: Jim Doty <jdoty@pivotal.io>
Reviewed-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/71E660EB361DF14299875B198D4CE5423DE3FBA4@g01jpexmbkw25
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