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Check for OOM sqlite_value_x() returns in base64, base85 extensions.

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FossilOrigin-Name: e6f9c0b1f963033a8e17d13935c5c6b12d263fe10c585035a3d1f1154c6ba5d6
This commit is contained in:
larrybr
2023-04-25 02:44:53 +00:00
parent 7eff609d8a
commit 21461407f6
4 changed files with 41 additions and 14 deletions
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18
ext/misc/base85.c
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@ -297,9 +297,16 @@ static void base85(sqlite3_context *context, int na, sqlite3_value *av[]){
sqlite3_result_error(context, "blob expanded to base85 too big", -1);
return;
}
bBuf = (u8*)sqlite3_value_blob(av[0]);
if( !bBuf ){
if( SQLITE_NOMEM==sqlite3_errcode(sqlite3_context_db_handle(context)) ){
goto memFail;
}
sqlite3_result_text(context,"",-1,SQLITE_STATIC);
break;
}
cBuf = sqlite3_malloc(nc);
if( !cBuf ) goto memFail;
bBuf = (u8*)sqlite3_value_blob(av[0]);
nc = (int)(toBase85(bBuf, nb, cBuf, "\n") - cBuf);
sqlite3_result_text(context, cBuf, nc, sqlite3_free);
break;
@ -312,9 +319,16 @@ static void base85(sqlite3_context *context, int na, sqlite3_value *av[]){
}else if( nb<1 ){
nb = 1;
}
cBuf = (char *)sqlite3_value_text(av[0]);
if( !cBuf ){
if( SQLITE_NOMEM==sqlite3_errcode(sqlite3_context_db_handle(context)) ){
goto memFail;
}
sqlite3_result_zeroblob(context, 0);
break;
}
bBuf = sqlite3_malloc(nb);
if( !bBuf ) goto memFail;
cBuf = (char *)sqlite3_value_text(av[0]);
nb = (int)(fromBase85(cBuf, nc, bBuf) - bBuf);
sqlite3_result_blob(context, bBuf, nb, sqlite3_free);
break;