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Extend wasm build to support a custom sqlite3.c to support building against sqlite3-see.c. The JS code now binds the SEE-specific functions if it detects an SEE build.

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FossilOrigin-Name: dd8612c8adbaf9d06bf0d7319b9afc9bd8ca3d0fcfa1cb591a7a2fcb86480048
This commit is contained in:
stephan
2023-03-08 10:05:42 +00:00
parent 217e860053
commit 248c1abdf4
6 changed files with 85 additions and 25 deletions
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5
ext/wasm/api/EXPORTED_FUNCTIONS.sqlite3-see Normal file
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@ -0,0 +1,5 @@
_sqlite3_key
_sqlite3_key_v2
_sqlite3_rekey
_sqlite3_rekey_v2
_sqlite3_activate_see

9
ext/wasm/api/sqlite3-api-glue.js
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@ -327,6 +327,15 @@ globalThis.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
wasm.bindingSignatures.push(["sqlite3_normalized_sql", "string", "sqlite3_stmt*"]);
}
if(wasm.exports.sqlite3_activate_see instanceof Function){
wasm.bindingSignatures.push(
["sqlite3_key", "int", "sqlite3*", "string", "int"],
["sqlite3_key_v2","int","sqlite3*","string","*","int"],
["sqlite3_rekey", "int", "sqlite3*", "string", "int"],
["sqlite3_rekey_v2", "int", "sqlite3*", "string", "*", "int"],
["sqlite3_activate_see", undefined, "string"]
);
}
/**
Functions which require BigInt (int64) support are separated from
the others because we need to conditionally bind them or apply

29
ext/wasm/api/sqlite3-wasm.c
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@ -168,11 +168,6 @@
#endif
#include <assert.h>
#include "sqlite3.c" /* yes, .c instead of .h. */
#if defined(__EMSCRIPTEN__)
# include <emscripten/console.h>
#endif
/*
** SQLITE_WASM_EXPORT is functionally identical to EMSCRIPTEN_KEEPALIVE
@ -201,6 +196,30 @@
// See also:
//__attribute__((export_name("theExportedName"), used, visibility("default")))
/*
** Which sqlite3.c we're using needs to be configurable to enable
** building against a custom copy, e.g. the SEE variant. Note that we
** #include the .c file, rather than the header, so that the WASM
** extensions have access to private API internals.
**
** The caveat here is that custom variants need to account for
** exporting any necessary symbols (e.g. sqlite3_activate_see()). We
** cannot export them from here using SQLITE_WASM_EXPORT because that
** attribute (apparently) has to be part of the function definition.
*/
#ifndef SQLITE_C
# define SQLITE_C sqlite3.c /* yes, .c instead of .h. */
#endif
#define INC__STRINGIFY_(f) #f
#define INC__STRINGIFY(f) INC__STRINGIFY_(f)
#include INC__STRINGIFY(SQLITE_C)
#undef INC__STRINGIFY_
#undef INC__STRINGIFY
#undef SQLITE_C
#if defined(__EMSCRIPTEN__)
# include <emscripten/console.h>
#endif
#if 0
/*