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This class had slightly confusing semantics and the added weirdness
doesn't seem worth it just so we can say "." instead of "->" when
iterating over a vector of NNRPs.
This patch replaces NonnullRefPtrVector<T> with Vector<NNRP<T>>.
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As usual, this removes many unused includes and moves used includes
further down the chain.
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Either take the underlying objects with release_* methods or move() the
instances around.
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We were shadowing the 'result' variable, which made an exec error
message along with the search paths never being printed.
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SQLClient exists as a wrapper around SQL IPC to provide a bit friendlier
interface for clients to deal with. Though right now, it mostly forwards
values as-is from IPC to the clients. This makes it a bit verbose to add
values to IPC responses, as we then have to add it to the callbacks used
by all clients. It's also a bit confusing seeing a sea of "auto" as the
parameter types for these callbacks.
This patch moves these response values to named structures instead. This
will allow adding values without needing to simultaneously update all
clients. We can then separately handle the new values in interested
clients only.
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Use the new get_paths_for_helper_process method in Ladybird to query
Qt for the runtime path of the current executable as well as the build
directory paths.
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`Stream` will be qualified as `AK::Stream` until we remove the
`Core::Stream` namespace. `IODevice` now reuses the `SeekMode` that is
defined by `SeekableStream`, since defining its own would require us to
qualify it with `AK::SeekMode` everywhere.
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In order to daemonize the SQLServer process for Ladybird, we double-fork
and exit the first child process to ensure the grandchild process is in
a detached state to become SQLServer. After commit c05fcd5, this happens
after Ladybird's QApplication is created. QApplication seems to hook up
some `exit` handling that makes the call to `exit(0)` here not actually
exit the child process.
Instead, using `kill` with SIGTERM will actually terminate the child
process.
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Having an alias function that only wraps another one is silly, and
keeping the more obvious name should flush out more uses of deprecated
strings.
No behavior change.
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This makes error invocations such as Error::from_string_literal become
associated with a SQLErrorCode (typically 0, AmbiguousColumnName). The
result, when displayed to the user, is quite confusing, e.g.:
Column name 'Heap()::write_block(): Oversized block' is ambiguous
Instead, just interpret these as internal errors, so the error message
is displayed as-is.
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In doing so, this removes all uses of the Encoder's stream operator,
except for where it is currently still used in the generated IPC code.
So the stream operator currently discards any errors, which is the
existing behavior. A subsequent commit will propagate the errors.
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These instances were detected by searching for files that include
AK/Format.h, but don't match the regex:
\\b(CheckedFormatString|critical_dmesgln|dbgln|dbgln_if|dmesgln|FormatBu
ilder|__FormatIfSupported|FormatIfSupported|FormatParser|FormatString|Fo
rmattable|Formatter|__format_value|HasFormatter|max_format_arguments|out
|outln|set_debug_enabled|StandardFormatter|TypeErasedFormatParams|TypeEr
asedParameter|VariadicFormatParams|v_critical_dmesgln|vdbgln|vdmesgln|vf
ormat|vout|warn|warnln|warnln_if)\\b
(Without the linebreaks.)
This regex is pessimistic, so there might be more files that don't
actually use any formatting functions.
Observe that this revealed that Userland/Libraries/LibC/signal.cpp is
missing an include.
In theory, one might use LibCPP to detect things like this
automatically, but let's do this one step after another.
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This allows you to enter TRUE or FALSE in a SQL statement for BOOLEAN
types. Note that this differs from SQLite, which requires entering 1 or
0 for BOOLEANs; having explicit keywords feels a bit more natural.
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Currently, the generated IPC decoders will default-construct the type to
be decoded, then pass that value by reference to the concrete decoder.
This, of course, requires that the type is default-constructible. This
was an issue for decoding Variants, which had to require the first type
in the Variant list is Empty, to ensure it is default constructible.
Further, this made it possible for values to become uninitialized in
user-defined decoders.
This patch makes the decoder interface such that the concrete decoders
themselves contruct the decoded type upon return from the decoder. To do
so, the default decoders in IPC::Decoder had to be moved to the IPC
namespace scope, as these decoders are now specializations instead of
overloaded methods (C++ requires specializations to be in a namespace
scope).
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This can fail if /run/user/$pid/ doesn't exist, which can happen on wsl
without systemd.
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This currently uses strtod, which is locale-dependent. Use the locale-
independent method added in 65ee9b4134225398f0a5109eb79b0baba98c9cd6.
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Currently, integers are stored in LibSQL as 32-bit signed integers, even
if the provided type is unsigned. This resulted in a series of unchecked
unsigned-to-signed conversions, and prevented storing 64-bit values.
Further, mathematical operations were performed without similar checks,
and without checking for overflow.
This changes SQL::Value to behave like SQLite for INTEGER types. In
SQLite, the INTEGER type does not imply a size or signedness of the
underlying type. Instead, SQLite determines on-the-fly what type is
needed as values are created and updated.
To do so, the SQL::Value variant can now hold an i64 or u64 integer. If
a specific type is requested, invalid conversions are now explictly an
error (e.g. converting a stored -1 to a u64 will fail). When binary
mathematical operations are performed, we now try to coerce the RHS
value to a type that works with the LHS value, failing the operation if
that isn't possible. Any overflow or invalid operation (e.g. bitshifting
a 64-bit value by more than 64 bytes) is an error.
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Removing the bitmask-esque values from the enumeration necessitates a
Heap version bump.
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In the long run, this is obviously a bad way to handle version changes
to the SQL database files. We will want to migrate old databases to new
formats. Until we figure out a good way to do that, wipe old databases
so that we don't crash trying to read incompatible data.
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Note that this still keeps the old behaviour of putting things in std by
default on serenity so the tools can be happy, but if USING_AK_GLOBALLY
is unset, AK behaves like a good citizen and doesn't try to put things
in the ::std namespace.
std::nothrow_t and its friends get to stay because I'm being told that
compilers assume things about them and I can't yeet them into a
different namespace...for now.
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This generally seems like a better name, especially if we somehow also
need a better name for "read the entire buffer, but not the entire file"
somewhere down the line.
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This is just used to key the socket fd for system server takeover. On
macOS, this file path has a space in it, which trips up the parsing as
it splits on spaces. That parsing should be fixed (probably shouldn't
rely on spaces as a delimter), but for now, we can change the key to
avoid spaces.
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Similar to: 9a4ee9aa1a6d947c720b5a550d1d5e81e715ba98.
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On Serenity, SQLServer is started by SystemServer. But on Lagom, it is
manually started by e.g. Ladybird when the application is started, and
killed when the application exits. This means every Ladybird process
starts its own SQLServer, which defeats the purpose of SQLServer acting
as the single process interacting with the database files.
This patch will allow SQLClient to start up a single SQLServer instance,
first checking if one already exists. If it does exist, SQLClient will
simply connect to SQLServer's socket. If it does not exist, SQLClient
will launch SQLServer much like SystemServer would (with a local socket
file, etc.).
The child SQLServer process is double-forked; the grandchild process
becomes the SQLServer process, which the middle child process simply
exits to "detach" the grandchild process from the SQLClient process.
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Makes it clearer what is being stored, especially in future clients that
will store a bunch of statement IDs.
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Similar to WebContent, this is needed to construct the SQLClient
manually in Ladybird.
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Exclude SQLServer from Lagom, and instead generate its IPC sources with
LibSQL.
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The sql REPL had the created/updated rows swapped by mistake. Also make
sure SQLServer fills in the correct value depending on the executed
command, and that the DELETE command indicates the rows it deleted.
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We've been sending the values converted to a string, but now that the
Value type is transferrable over IPC, send the values themselves. Any
client that wants the value as a string may do so easily, whereas this
will allow less trivial clients to avoid string parsing.
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Currently, when clients connect to SQL server, we inform them of any
errors opening the database via an asynchronous IPC. But we already know
about these errors before returning from the connect() IPC, so this
roundabout propagation is a bit unnecessary. Now if we fail to open the
database, we will simply not send back a valid connection ID.
Disconnect has a similar story. Rather than disconnecting and invoking
an asynchronous IPC to inform the client of the disconnect, make the
disconnect() IPC synchronous (because all it does is remove the database
from the map of open databases). Further, the only user of this command
is the SQL REPL when it wants to connect to a different database, so it
makes sense to block it. This did require moving a bit of logic around
in the REPL to accommodate this change.
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In order to execute a prepared statement multiple times, and track each
execution's results, clients will need to be provided an execution ID.
This will create a monotonically increasing ID each time a prepared
statement is executed for this purpose.
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When storing IDs and sending values over IPC, this changes SQLServer to:
1. Stop using -1 as a nominal "bad" ID. Store the IDs as unsigned, and
use Optional in the one place that the IPC needs to indicate an ID
was not allocated.
2. Let LibIPC encode/decode enumerations (SQLErrorCode) on our behalf.
3. Use size_t for array sizes.
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This will allow clients to send placeholder values for prepared
statements over IPC.
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This partially implements SQLite's bind-parameter expression to support
indicating placeholder values in a SQL statement. For example:
INSERT INTO table VALUES (42, ?);
In the above statement, the '?' identifier is a placeholder. This will
allow clients to compile statements a single time while running those
statements any number of times with different placeholder values.
Further, this will help mitigate SQL injection attacks.
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This implements enough to update rows filtered by a WHERE clause.
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This will make it easier to support both string types at the same time
while we convert code, and tracking down remaining uses.
One big exception is Value::to_string() in LibJS, where the name is
dictated by the ToString AO.
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We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
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This implements enough to delete rows filtered by a WHERE clause.
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