Add the pointer-type parameter to sqlite3_bind_pointer(),
sqlite3_result_pointer(), and sqlite3_value_pointer(). The pointer type is a static string that must match (according to strcmp()) or else the pointer is passed as a NULL. This is a security measure to prevent crossing pointers between different extensions. FossilOrigin-Name: e1196567fcbc313657836262ed9f71668b1c47f26e4bc57c7880ff40079d66cc
This commit is contained in:
drh
commit
0357713225
@ -3353,7 +3353,7 @@ static int fts3ColumnMethod(
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switch( iCol-p->nColumn ){
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case 0:
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/* The special 'table-name' column */
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sqlite3_result_pointer(pCtx, pCsr);
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sqlite3_result_pointer(pCtx, pCsr, "fts3cursor");
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break;
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case 1:
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@ -3572,7 +3572,7 @@ static int fts3FunctionArg(
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Fts3Cursor **ppCsr /* OUT: Store cursor handle here */
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){
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int rc;
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*ppCsr = (Fts3Cursor*)sqlite3_value_pointer(pVal);
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*ppCsr = (Fts3Cursor*)sqlite3_value_pointer(pVal, "fts3cursor");
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if( (*ppCsr)!=0 ){
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rc = SQLITE_OK;
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}else{
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@ -19,7 +19,12 @@
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** The query above returns 5 integers contained in a C-language array
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** at the address $ptr. $ptr is a pointer to the array of integers.
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** The pointer value must be assigned to $ptr using the
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** sqlite3_bind_pointer() interface.
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** sqlite3_bind_pointer() interface with a pointer type of "carray".
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** For example:
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**
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** static int aX[] = { 53, 9, 17, 2231, 4, 99 };
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** int i = sqlite3_bind_parameter_index(pStmt, "$ptr");
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** sqlite3_bind_value(pStmt, i, aX, "carray");
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**
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** There is an optional third parameter to determine the datatype of
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** the C-language array. Allowed values of the third parameter are
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@ -27,6 +32,8 @@
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**
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** SELECT * FROM carray($ptr,10,'char*');
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**
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** The default value of the third parameter is 'int32'.
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**
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** HOW IT WORKS
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**
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** The carray "function" is really a virtual table with the
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@ -233,7 +240,7 @@ static int carrayFilter(
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){
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carray_cursor *pCur = (carray_cursor *)pVtabCursor;
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if( idxNum ){
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pCur->pPtr = sqlite3_value_pointer(argv[0]);
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pCur->pPtr = sqlite3_value_pointer(argv[0], "carray");
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pCur->iCnt = pCur->pPtr ? sqlite3_value_int64(argv[1]) : 0;
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if( idxNum<3 ){
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pCur->eType = CARRAY_INT32;
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@ -370,7 +377,7 @@ static void inttoptrFunc(
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int i32 = i64 & 0xffffffff;
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memcpy(&p, &i32, sizeof(p));
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}
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sqlite3_result_pointer(context, p);
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sqlite3_result_pointer(context, p, "carray");
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}
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#endif /* SQLITE_TEST */
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@ -21,8 +21,9 @@
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** UPDATE counterTab SET cnt=remember(cnt,$PTR)+1 WHERE id=$ID
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**
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** Prepare the above statement once. Then to use it, bind the address
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** of the output variable to $PTR (using sqlite3_bind_pointer()) and
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** bind the id of the counter to $ID and run the prepared statement.
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** of the output variable to $PTR using sqlite3_bind_pointer() with a
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** pointer type of "carray" and bind the id of the counter to $ID and
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** run the prepared statement.
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**
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** One can imagine doing similar things with floating-point values and
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** strings, but this demonstration extension will stick to using just
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@ -47,7 +48,7 @@ static void rememberFunc(
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sqlite3_int64 *ptr;
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assert( argc==2 );
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v = sqlite3_value_int64(argv[0]);
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ptr = sqlite3_value_pointer(argv[1]);
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ptr = sqlite3_value_pointer(argv[1], "carray");
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if( ptr ) *ptr = v;
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sqlite3_result_int64(pCtx, v);
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}
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27
manifest
27
manifest
@ -1,5 +1,5 @@
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C Merge\sthe\sfix\sfor\sticket\s[a4e06e75a9ab61a12]\sfrom\strunk.
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D 2017-07-15T20:44:33.555
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C Add\sthe\spointer-type\sparameter\sto\ssqlite3_bind_pointer(),\nsqlite3_result_pointer(),\sand\ssqlite3_value_pointer().\s\sThe\spointer\stype\sis\na\sstatic\sstring\sthat\smust\smatch\s(according\sto\sstrcmp())\sor\selse\sthe\spointer\nis\spassed\sas\sa\sNULL.\s\sThis\sis\sa\ssecurity\smeasure\sto\sprevent\scrossing\spointers\nbetween\sdifferent\sextensions.
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D 2017-07-17T12:27:43.686
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F Makefile.in eda8bedf08c4c93e2137ef1218b3d3302488c68c2774918de0335a1133aab157
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F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
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F Makefile.msc 20850e3e8d4d4791e0531955852d768eb06f24138214870d543abb1a47346fba
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@ -70,7 +70,7 @@ F ext/fts3/README.content fdc666a70d5257a64fee209f97cf89e0e6e32b51
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F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
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F ext/fts3/README.tokenizers e0a8b81383ea60d0334d274fadf305ea14a8c314
|
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F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
|
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F ext/fts3/fts3.c 02fbd2215309a7a73cbf29045897344987b6e17bb0b1685d13155f8b29768a50
|
||||
F ext/fts3/fts3.c dfda8bb464d229785e0528fcf7017b4f8e95656d40d28333dfc3f3363bbe229e
|
||||
F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
|
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F ext/fts3/fts3Int.h eb2502000148e80913b965db3e59f29251266d0a
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F ext/fts3/fts3_aux.c 9edc3655fcb287f0467d0a4b886a01c6185fe9f1
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@ -256,7 +256,7 @@ F ext/lsm1/test/lsm1_simple.test 3bb38951450cd1f12a6c294949334d6fbb109a3da38c48e
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F ext/misc/README.md 8e008c8d2b02e09096b31dfba033253ac27c6c06a18aa5826e299fa7601d90b2
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F ext/misc/amatch.c 6db4607cb17c54b853a2d7c7c36046d004853f65b9b733e6f019d543d5dfae87
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F ext/misc/anycollseq.c 5ffdfde9829eeac52219136ad6aa7cd9a4edb3b15f4f2532de52f4a22525eddb
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F ext/misc/carray.c 5a330eea8f2f5382f9bd794eb37eadf234c4db190074ea6104cc66d2a724c1d3
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F ext/misc/carray.c 880684b2796ef6ad915094093297eede40db6c07f280c7f491c8eff72ea03ec7
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F ext/misc/closure.c 0d2a038df8fbae7f19de42e7c7d71f2e4dc88704
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F ext/misc/completion.c 52c3f01523e3e387eb321b4739a89d1fe47cbe6025aa1f2d8d3685e9e365df0f
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F ext/misc/compress.c 122faa92d25033d6c3f07c39231de074ab3d2e83
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@ -271,7 +271,7 @@ F ext/misc/memvfs.c e5225bc22e79dde6b28380f3a068ddf600683a33
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F ext/misc/nextchar.c 35c8b8baacb96d92abbb34a83a997b797075b342
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F ext/misc/percentile.c 92699c8cd7d517ff610e6037e56506f8904dae2e
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F ext/misc/regexp.c a68d25c659bd2d893cd1215667bbf75ecb9dc7d4
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F ext/misc/remember.c 0cbd7526e1bc956c493ed21125683f8554ef4819982400b65a8da2e4e18e9ecd
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F ext/misc/remember.c 9b9e220ca9d08466508018a9643d4a367bc03bb038d5213c21f70ab74bfc7f20
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F ext/misc/rot13.c 1ac6f95f99b575907b9b09c81a349114cf9be45a
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F ext/misc/scrub.c 1c5bfb8b0cd18b602fcb55755e84abf0023ac2fb
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F ext/misc/series.c b0f5f346aca9b7ff7caaf0da2efb4ad462441abd4dcd92a460cb573b3ea2370b
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@ -454,9 +454,9 @@ F src/rowset.c 7b7e7e479212e65b723bf40128c7b36dc5afdfac
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F src/select.c 95659b7990e390f9bd8dc30b8975c675fcd1d46e569bc4f5a14e22a8d03e3d14
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F src/shell.c e89ad1135cb47c95896a1aec4bd0113af90a057d80f20003f354fa56fc10a616
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F src/shell.c.in dae43a6a43988d955014f070341f296561ea4a43ca2685166a32495b0667ef59
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F src/sqlite.h.in 042383fde795a11009248dd465629ef4f08837684820f6c660d3c12dcdc0f706
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F src/sqlite.h.in 07edd8c96112acb8b8f5e4a6d0c404bef0796484cd1d28408f6ec7a4b3f96f97
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F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
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F src/sqlite3ext.h 654d76dd288780a460be9c88edc6a5eb2d61df03a7153c92f1d87aba41f73b96
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F src/sqlite3ext.h 967154985ed2ae62f90d9029bb5b5071793d847f1696a2ebe9e8cc0b042ae60b
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F src/sqliteInt.h 0ba730cdc8afa723a5642380712f8bb33abd6a69218571c18b94acf3562de22a
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F src/sqliteLimit.h 1513bfb7b20378aa0041e7022d04acb73525de35b80b252f1b83fedb4de6a76b
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F src/status.c a9e66593dfb28a9e746cba7153f84d49c1ddc4b1
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@ -521,11 +521,11 @@ F src/util.c fc081ec6f63448dcd80d3dfad35baecfa104823254a815b081a4d9fe76e1db23
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F src/vacuum.c 874c0f2f15ab2908748297d587d22d485ea96d55aaec91d4775dddb2e24d2ecf
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F src/vdbe.c adc8a378710ec2376101483cc8a5f499539ee9bbebfb2a784f3370704d5d44ad
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F src/vdbe.h 7bf719031782823b915aff2c1f93d1944c1c6b300770a15339b7dbc9610b802e
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F src/vdbeInt.h 36b162cce2410f07cc6ad1c4472af7d5e31bcc0b8a532082aa6f2740e124a11f
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F src/vdbeapi.c 8f830cf2e37929315a09b578a975d77070bad8185ade2006b14e72bf60227f3e
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F src/vdbeInt.h 19bd04a4211fe56c712ab35b48be77fd5a0579b851e9dea2cb8deade359b72b9
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F src/vdbeapi.c f600bf0dfcea8edb0e0a44a98035bbe3310824af18c193ba242449db250627a4
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F src/vdbeaux.c 518d1cf6728ecb591390541c58b14902e8d61735ef574426b9971624c54d2c4b
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F src/vdbeblob.c 359891617358deefc85bef7bcf787fa6b77facb9
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F src/vdbemem.c 78dfccca73eba44f4f6988f1f3d6ca93dd6431fcf9e6946945f4505fff1fb03f
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F src/vdbemem.c fe8fce1cdc258320b465934039fe4b1230d63f81d6b81b1eac775b6eec00af0d
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F src/vdbesort.c f512c68d0bf7e0105316a5594c4329358c8ee9cae3b25138df041d97516c0372
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F src/vdbetrace.c 41963d5376f0349842b5fc4aaaaacd7d9cdc0834
|
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F src/vtab.c 35b9bdc2b41de32a417141d12097bcc4e29a77ed7cdb8f836d1d2305d946b61b
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@ -1633,7 +1633,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
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F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
|
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F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
|
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F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
|
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P 47cf83a0682b7b3219cf255457f5fbe05f3c1f46be42f6bbab33b78a57a252f6 253945d480b052bfe311888022b5eb0be91c8c80cda05036e58207d57520262c
|
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R fc177602ad383f813078bc7976231f1f
|
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P b64d64c84484162d1822430036ba0483365a39ef4cf82cd6a7b9436d9e9f50c8 c13264d5ef0470fb24e09f7bc12f19be3b77eab06d41f55607b38dddb532a132
|
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R b5069fb289c149b1ae5393ff07d0ac4e
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T +closed c13264d5ef0470fb24e09f7bc12f19be3b77eab06d41f55607b38dddb532a132
|
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U drh
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Z 72e0051f8920101ae819b65d7e9be4d4
|
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Z 925d3dfda59d7030b45ae8209211f32c
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@ -1 +1 @@
|
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b64d64c84484162d1822430036ba0483365a39ef4cf82cd6a7b9436d9e9f50c8
|
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e1196567fcbc313657836262ed9f71668b1c47f26e4bc57c7880ff40079d66cc
|
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@ -3883,9 +3883,9 @@ typedef struct sqlite3_context sqlite3_context;
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** [sqlite3_blob_open | incremental BLOB I/O] routines.
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** ^A negative value for the zeroblob results in a zero-length BLOB.
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**
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** ^The sqlite3_bind_pointer(S,I,P) routine causes the I-th parameter in
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** ^The sqlite3_bind_pointer(S,I,P,T) routine causes the I-th parameter in
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** [prepared statement] S to have an SQL value of NULL, but to also be
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** associated with the pointer P.
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** associated with the pointer P of type T.
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** ^The sqlite3_bind_pointer() routine can be used to pass
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** host-language pointers into [application-defined SQL functions].
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** ^A parameter that is initialized using [sqlite3_bind_pointer()] appears
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@ -3925,7 +3925,7 @@ int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
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int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
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void(*)(void*), unsigned char encoding);
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int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
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int sqlite3_bind_pointer(sqlite3_stmt*, int, void*);
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int sqlite3_bind_pointer(sqlite3_stmt*, int, void*, const char*);
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int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
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int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);
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@ -4758,9 +4758,10 @@ SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),
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** extract UTF-16 strings as big-endian and little-endian respectively.
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**
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** ^If [sqlite3_value] object V was initialized
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** using [sqlite3_bind_pointer(S,I,P)] or [sqlite3_result_pointer(C,P)], then
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** sqlite3_value_pointer(V) will return the pointer P. Otherwise,
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** sqlite3_value_pointer(V) returns a NULL.
|
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** using [sqlite3_bind_pointer(S,I,P,X)] or [sqlite3_result_pointer(C,P,X)]
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** and if X and Y are strings that compare equal according to strcmp(X,Y),
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** then sqlite3_value_pointer(V,Y) will return the pointer P. ^Otherwise,
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** sqlite3_value_pointer(V,Y) returns a NULL.
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**
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** ^(The sqlite3_value_type(V) interface returns the
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** [SQLITE_INTEGER | datatype code] for the initial datatype of the
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@ -4794,7 +4795,7 @@ const void *sqlite3_value_blob(sqlite3_value*);
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double sqlite3_value_double(sqlite3_value*);
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int sqlite3_value_int(sqlite3_value*);
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sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
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void *sqlite3_value_pointer(sqlite3_value*);
|
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void *sqlite3_value_pointer(sqlite3_value*, const char*);
|
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const unsigned char *sqlite3_value_text(sqlite3_value*);
|
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const void *sqlite3_value_text16(sqlite3_value*);
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const void *sqlite3_value_text16le(sqlite3_value*);
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@ -5095,10 +5096,10 @@ typedef void (*sqlite3_destructor_type)(void*);
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** [unprotected sqlite3_value] object is required, so either
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** kind of [sqlite3_value] object can be used with this interface.
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**
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** ^The sqlite3_result_pointer(C,P) interface sets the result to an
|
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** ^The sqlite3_result_pointer(C,P,T) interface sets the result to an
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** SQL NULL value, just like [sqlite3_result_null(C)], except that it
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** also associates the host-language pointer P with that NULL value such
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** that the pointer can be retrieved within an
|
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** also associates the host-language pointer P or type T with that
|
||||
** NULL value such that the pointer can be retrieved within an
|
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** [application-defined SQL function] using [sqlite3_value_pointer()].
|
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** This mechanism can be used to pass non-SQL values between
|
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** application-defined functions.
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@ -5126,7 +5127,7 @@ void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
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void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
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void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
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void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
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void sqlite3_result_pointer(sqlite3_context*, void*);
|
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void sqlite3_result_pointer(sqlite3_context*, void*, const char*);
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void sqlite3_result_zeroblob(sqlite3_context*, int n);
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int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);
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@ -289,9 +289,9 @@ struct sqlite3_api_routines {
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sqlite3_stmt**,const char**);
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int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
|
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sqlite3_stmt**,const void**);
|
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int (*bind_pointer)(sqlite3_stmt*,int,void*);
|
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void (*result_pointer)(sqlite3_context*,void*);
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void *(*value_pointer)(sqlite3_value*);
|
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int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*);
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void (*result_pointer)(sqlite3_context*,void*,const char*);
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void *(*value_pointer)(sqlite3_value*,const char*);
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};
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/*
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@ -476,7 +476,7 @@ void sqlite3VdbeMemSetInt64(Mem*, i64);
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#else
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void sqlite3VdbeMemSetDouble(Mem*, double);
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#endif
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void sqlite3VdbeMemSetPointer(Mem*, void*);
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void sqlite3VdbeMemSetPointer(Mem*, void*, const char*);
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void sqlite3VdbeMemInit(Mem*,sqlite3*,u16);
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void sqlite3VdbeMemSetNull(Mem*);
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void sqlite3VdbeMemSetZeroBlob(Mem*,int);
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@ -199,9 +199,13 @@ unsigned int sqlite3_value_subtype(sqlite3_value *pVal){
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Mem *pMem = (Mem*)pVal;
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return ((pMem->flags & MEM_Subtype) ? pMem->eSubtype : 0);
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}
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void *sqlite3_value_pointer(sqlite3_value *pVal){
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void *sqlite3_value_pointer(sqlite3_value *pVal, const char *zPType){
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Mem *p = (Mem*)pVal;
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if( (p->flags & MEM_TypeMask)==(MEM_Null|MEM_Subtype) && p->eSubtype=='p' ){
|
||||
if( p->flags==(MEM_Null|MEM_Subtype|MEM_Term|MEM_Static)
|
||||
&& p->eSubtype=='p'
|
||||
&& zPType!=0
|
||||
&& strcmp(p->z, zPType)==0
|
||||
){
|
||||
return p->u.pPtr;
|
||||
}else{
|
||||
return 0;
|
||||
@ -385,11 +389,11 @@ void sqlite3_result_null(sqlite3_context *pCtx){
|
||||
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) );
|
||||
sqlite3VdbeMemSetNull(pCtx->pOut);
|
||||
}
|
||||
void sqlite3_result_pointer(sqlite3_context *pCtx, void *pPtr){
|
||||
void sqlite3_result_pointer(sqlite3_context *pCtx, void *pPtr, const char *zPT){
|
||||
Mem *pOut = pCtx->pOut;
|
||||
assert( sqlite3_mutex_held(pOut->db->mutex) );
|
||||
sqlite3VdbeMemSetNull(pOut);
|
||||
sqlite3VdbeMemSetPointer(pOut, pPtr);
|
||||
sqlite3VdbeMemSetPointer(pOut, pPtr, zPT);
|
||||
}
|
||||
void sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){
|
||||
Mem *pOut = pCtx->pOut;
|
||||
@ -1394,12 +1398,12 @@ int sqlite3_bind_null(sqlite3_stmt *pStmt, int i){
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
int sqlite3_bind_pointer(sqlite3_stmt *pStmt, int i, void *pPtr){
|
||||
int sqlite3_bind_pointer(sqlite3_stmt *pStmt, int i, void *pPtr,const char *zT){
|
||||
int rc;
|
||||
Vdbe *p = (Vdbe*)pStmt;
|
||||
rc = vdbeUnbind(p, i);
|
||||
if( rc==SQLITE_OK ){
|
||||
sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr);
|
||||
sqlite3VdbeMemSetPointer(&p->aVar[i-1], pPtr, zT);
|
||||
sqlite3_mutex_leave(p->db->mutex);
|
||||
}
|
||||
return rc;
|
||||
|
||||
@ -709,11 +709,14 @@ void sqlite3VdbeMemSetInt64(Mem *pMem, i64 val){
|
||||
** Set the value stored in *pMem should already be a NULL.
|
||||
** Also store a pointer to go with it.
|
||||
*/
|
||||
void sqlite3VdbeMemSetPointer(Mem *pMem, void *pPtr){
|
||||
void sqlite3VdbeMemSetPointer(Mem *pMem, void *pPtr, const char *zPType){
|
||||
assert( pMem->flags==MEM_Null );
|
||||
pMem->flags = MEM_Null|MEM_Subtype;
|
||||
pMem->u.pPtr = pPtr;
|
||||
pMem->eSubtype = 'p';
|
||||
if( zPType ){
|
||||
pMem->flags = MEM_Null|MEM_Subtype|MEM_Term|MEM_Static;
|
||||
pMem->u.pPtr = pPtr;
|
||||
pMem->eSubtype = 'p';
|
||||
pMem->z = (char*)zPType;
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef SQLITE_OMIT_FLOATING_POINT
|
||||
|
||||
Loading…
Reference in New Issue
Block a user