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-rw-r--r-- | test/sessionfuzz.c | 1023 |
1 files changed, 1023 insertions, 0 deletions
diff --git a/test/sessionfuzz.c b/test/sessionfuzz.c new file mode 100644 index 0000000..d8cc1be --- /dev/null +++ b/test/sessionfuzz.c @@ -0,0 +1,1023 @@ +/* +** 2018-03-01 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file implements a program used for fuzz-testing the session +** module. +** +** Usage: +** +** sessionfuzz setup -- Generate starter test cases +** sessionfuzz run FILE ... -- Run a test fuzz on FILE +** sesssiofuzz run SQLAR ... -- Run all test cases in the SQL Archive +** +** Compiling: +** +** (1) Have a version of SQLite that supports SQLITE_ENABLE_MEMDB +** in the local directory. +** (2) Run: +** +** gcc -Wall -O3 -o sessionfuzz sessionfuzz.c -lz +** +** Use with AFL (American Fuzzy Lop - http://lcamtuf.coredump.cx/afl/) +** +** (1) ./afl-gcc -O3 -o sessionfuzz sessionfuzz.c -lz +** (2) mkdir session-init session-run session-cases +** (3) cd session-init; ../sessionfuzz setup; cd .. +** (4) ./afl -i session-init -o session-run -- ./sessionfuzz run @@ +** ... let the previous step run for a while. Weeks, maybe. +** (5) ./afl-cmin -i session-run -o session-cases +** +** The afl-cmin command on step (5) writes a minimal set of test cases +** for coverage into the session-cases directory. Gather the cases written +** there into an SQL Archive using a command like this: +** +** sqlite3 session-cases.db -Ac session-cases +** +** Then repeat the test using: +** +** ./sessionfuzz run session-cases.db +*/ + +/* +** We will import the entire SQLite source file to make compiling easier +*/ +#ifdef SQLITE_DEBUG +#undef SQLITE_DEBUG +#endif + +#ifdef SQLITE_THREADSAFE +#undef SQLITE_THREADSAFE +#endif + +#define SQLITE_DEBUG 1 +#define SQLITE_THREADSAFE 0 +#define SQLITE_OMIT_LOAD_EXTENSION 0 +#define SQLITE_ENABLE_SESSION 1 +#define SQLITE_ENABLE_PREUPDATE_HOOK 1 +#define SQLITE_ENABLE_DESERIALIZE 1 +#include "sqlite3.c" + +/* Create a test database. This will be an in-memory database */ +static const char zInitSql[] = + "CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d);\n" + "CREATE TABLE t2(e TEXT PRIMARY KEY NOT NULL,f,g);\n" + "CREATE TABLE t3(w REAL PRIMARY KEY NOT NULL,x,y);\n" + "CREATE TABLE t4(z PRIMARY KEY) WITHOUT ROWID;\n" +; + +/* Code to populate the database */ +static const char zFillSql[] = + "INSERT INTO t1(a,b,c,d) VALUES\n" + " (1,2,3,4),\n" + " (2,3.5,'four',x'556677'),\n" + " (3,null,'xyz',15),\n" + " (4,'bubba',0x80000000,0.0);\n" + "INSERT INTO t1 SELECT a+4,c,d,b FROM t1;\n" + "INSERT INTO t1 SELECT a+8,d,b,c FROM t1;\n" + "INSERT INTO t1 SELECT a+16,d,c,b FROM t1;\n" + "INSERT INTO t1 SELECT a+32,b,d,c FROM t1;\n" + "INSERT INTO t2 SELECT printf('x%dy',a),b,c FROM t1;\n" + "INSERT INTO t3 SELECT a*1.1,b,c FROM t1;\n" + "INSERT INTO t4 SELECT a||','||quote(b) FROM t1;\n" +; + +/* A database file created by running the two scripts above */ +static const unsigned char aDbBytes[] = { + 83, 81, 76,105,116,101, 32,102,111,114,109, 97,116, 32, 51, 0, 2, 0, 1, + 1, 0, 64, 32, 32, 0, 0, 0, 13, 0, 0, 0, 22, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 5, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 13, 0, 46, 32,152, 13, 1,186, 0, 6, 0,176, 0, 1,194, 1, 84, 1,150, + 0,238, 1, 48, 0,176, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 60, 6, 6, 23, 17, 17, 1,101,116, 97, 98,108,101,116, + 52,116, 52, 7, 67, 82, 69, 65, 84, 69, 32, 84, 65, 66, 76, 69, 32,116, 52, + 40,122, 32, 80, 82, 73, 77, 65, 82, 89, 32, 75, 69, 89, 41, 32, 87, 73, 84, + 72, 79, 85, 84, 32, 82, 79, 87, 73, 68, 64, 4, 6, 23, 17, 17, 1,109,116, + 97, 98,108,101,116, 51,116, 51, 5, 67, 82, 69, 65, 84, 69, 32, 84, 65, 66, + 76, 69, 32,116, 51, 40,119, 32, 82, 69, 65, 76, 32, 80, 82, 73, 77, 65, 82, + 89, 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2, 33, + 49, 54, 44, 39, 98,117, 98, 98, 97, 39, 9, 2, 27, 49, 53, 44, 78, 85, 76, + 76, 8, 2, 25, 49, 52, 44, 51, 46, 53, 6, 2, 21, 49, 51, 44, 50, 8, 2, + 25, 49, 50, 44, 48, 46, 48, 7, 2, 23, 49, 49, 44, 49, 53, 14, 2, 37, 49, + 48, 44, 88, 39, 53, 53, 54, 54, 55, 55, 39, 5, 2, 19, 49, 44, 50, 10, 0, + 0, 0, 22, 1, 32, 0, 1,243, 1,236, 1,230, 1,215, 1,207, 1,198, 1, + 191, 1,182, 1,172, 1,159, 1,152, 1,140, 1,129, 1,118, 1,102, 1, 95, + 1, 80, 1, 72, 1, 63, 1, 53, 1, 38, 1, 32, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 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39, 5, 2, 19, 53, 44, 51, 6, 2, 21, 52, + 57, 44, 52, 12, 2, 33, 52, 56, 44, 39, 98,117, 98, 98, 97, 39, +}; + +/* Help message */ +static const char zHelp[] = + "Usage:\n" + " sessionfuzz setup -- Generate seed files c1.txt, c2.txt, etc.\n" + " sessionfuzz run FILE ... -- Run against fuzzed changeset FILE\n" + " sessionfuzz run SQLAR ... -- Run against all files in the SQL Archive\n" +; + +#include <stdio.h> +#include <string.h> +#include <assert.h> +#ifndef OMIT_ZLIB +#include "zlib.h" +#endif + +/* +** Implementation of the "sqlar_uncompress(X,SZ)" SQL function +** +** Parameter SZ is interpreted as an integer. If it is less than or +** equal to zero, then this function returns a copy of X. Or, if +** SZ is equal to the size of X when interpreted as a blob, also +** return a copy of X. Otherwise, decompress blob X using zlib +** utility function uncompress() and return the results (another +** blob). +*/ +static void sqlarUncompressFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ +#ifdef OMIT_ZLIB + sqlite3_result_value(context, argv[0]); +#else + uLong nData; + uLongf sz; + + assert( argc==2 ); + sz = sqlite3_value_int(argv[1]); + + if( sz<=0 || sz==(nData = sqlite3_value_bytes(argv[0])) ){ + sqlite3_result_value(context, argv[0]); + }else{ + const Bytef *pData= sqlite3_value_blob(argv[0]); + Bytef *pOut = sqlite3_malloc(sz); + if( Z_OK!=uncompress(pOut, &sz, pData, nData) ){ + sqlite3_result_error(context, "error in uncompress()", -1); + }else{ + sqlite3_result_blob(context, pOut, sz, SQLITE_TRANSIENT); + } + sqlite3_free(pOut); + } +#endif +} + + +/* Run a chunk of SQL. If any errors happen, print an error message +** and exit. +*/ +static void runSql(sqlite3 *db, const char *zSql){ + int rc; + char *zErr = 0; + rc = sqlite3_exec(db, zSql, 0, 0, &zErr); + if( rc || zErr ){ + fprintf(stderr, "SQL failed: rc=%d zErr=[%s]\n", rc, zErr); + fprintf(stderr, "SQL: [%s]\n", zSql); + exit(1); + } +} + +/* +** Write buffer to disk +*/ +static void writeFile(const char *zFilename, const void *pData, int nData){ + FILE *out; + int n; + out = fopen(zFilename, "wb"); + if( out==0 ){ + fprintf(stderr, "cannot open \"%s\" for writing\n", zFilename); + exit(1); + } + n = (int)fwrite(pData, 1, nData, out); + fclose(out); + if( n!=nData ){ + fprintf(stderr, "only wrote %d of %d bytes to \"%s\"\n",n,nData,zFilename); + exit(1); + } +} + +/* +** Generate a changeset from session pSess and write it to zFile +*/ +static void makeChangeset(const char *zFile, sqlite3_session *pSess){ + void *pChg; + int nChg; + int rc; + rc = sqlite3session_changeset(pSess, &nChg, &pChg); + if( rc ){ + fprintf(stderr, "sqlite3session_changeset() returned %d\n", rc); + exit(1); + } + writeFile(zFile, pChg, nChg); + sqlite3_free(pChg); +} + +/* +** Read a file from disk. Space to hold the answer is obtained from +** sqlite3_malloc64(). +*/ +static void readFile(const char *zName, void **ppData, int *pnData){ + FILE *in = fopen(zName, "rb"); + long nIn; + size_t nRead; + char *pBuf; + *ppData = 0; + *pnData = 0; + if( in==0 ){ + fprintf(stderr, "Cannot open \"%s\" for reading\n", zName); + exit(1); + } + fseek(in, 0, SEEK_END); + nIn = ftell(in); + rewind(in); + pBuf = sqlite3_malloc64( nIn+1 ); + if( pBuf==0 ){ + fprintf(stderr, "Failed to malloc %lld bytes\n", (sqlite3_int64)(nIn+1)); + exit(1); + } + nRead = fread(pBuf, 1, nIn, in); + fclose(in); + if( nRead!=(size_t)nIn ){ + fprintf(stderr, "Read only %d of %d bytes from %s\n", (int)nRead, (int)nIn, + zName); + exit(1); + } + pBuf[nIn] = 0; + *pnData = nIn; + *ppData = pBuf; +} + +/* +** The conflict callback +*/ +static int conflictCall( + void *NotUsed, + int eConflict, + sqlite3_changeset_iter *p +){ + (void)NotUsed; + (void)p; + return SQLITE_CHANGESET_OMIT; +} + +/* +** Reset the database file +*/ +static void db_reset(sqlite3 *db){ + unsigned char *pData; + int nData; + int rc; + + nData = sizeof(aDbBytes); + pData = sqlite3_malloc64( nData ); + if( pData==0 ){ + fprintf(stderr, "could not allocate %d bytes\n", nData); + exit(1); + } + memcpy(pData, aDbBytes, nData); + rc = sqlite3_deserialize(db, 0, pData, nData, nData, + SQLITE_DESERIALIZE_FREEONCLOSE | SQLITE_DESERIALIZE_RESIZEABLE); + if( rc ){ + fprintf(stderr, "sqlite3_deserialize() failed with %d: %s\n", + rc, sqlite3_errmsg(db)); + exit(1); + } +} + +/* +** Given a full file pathname, return a pointer to the tail. +** Example: +** +** input: /home/drh/sqlite/abc.db +** output: abc.db +*/ +static const char *fileTail(const char *z){ + const char *zOut = z; + while( z[0] ){ + if( z[0]=='/' && z[1]!=0 ) zOut = &z[1]; + z++; + } + return zOut; +} + +int main(int argc, char **argv){ + const char *zCmd; + sqlite3 *db; + int rc; + sqlite3_session *pSess; + sqlite3_stmt *pStmt; + void *pChgset; + int nChgset; + int bVerbose = 0; + + if( argc<2 ){ + fprintf(stderr, "%s", zHelp); + exit(1); + } + rc = sqlite3_open_v2(":memory:",&db, + SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, "memdb"); + if( rc ){ + fprintf(stderr, "Failed to open :memory: database: %s\n", + sqlite3_errmsg(db)); + exit(1); + } + db_reset(db); + zCmd = argv[1]; + if( strcmp(zCmd, "setup")==0 ){ + if( argc!=2 ){ + fprintf(stdout, "Wrong number of arguments.\n%s", zHelp); + exit(1); + } + runSql(db, zFillSql); + rc = sqlite3session_create(db, "main", &pSess); + if( rc ){ + fprintf(stderr, "sqlite3session_create() returns %d\n", rc); + exit(1); + } + rc = sqlite3session_attach(pSess, 0); + if( rc ){ + fprintf(stderr, "sqlite3session_attach(db,0) returns %d\n", rc); + exit(1); + } + runSql(db, "INSERT INTO t4(z) VALUES('');"); + makeChangeset("c1.txt", pSess); + runSql(db, + "UPDATE t1 SET b=c, c=b WHERE a IN (5,7);\n" + "DELETE FROM t2 WHERE rowid IN (8,2);\n" + "INSERT OR IGNORE INTO t4 SELECT b FROM t1 WHERE b IS TRUE LIMIT 2;"); + makeChangeset("c2.txt", pSess); + runSql(db, "UPDATE t3 SET x=y, y=NULL WHERE rowid IN (1,3);"); + makeChangeset("c3.txt", pSess); + sqlite3session_delete(pSess); + }else + if( strcmp(zCmd, "run")==0 ){ + int i; + if( argc<3 ){ + fprintf(stdout, "Wrong number of arguments.\n%s", zHelp); + exit(1); + } + for(i=2; i<argc; i++){ + if( strcmp(argv[i],"-v")==0 ){ + bVerbose = 1; + continue; + } + readFile(argv[i], &pChgset, &nChgset); + if( nChgset >= 512 + && memcmp(pChgset, "SQLite format 3", 16)==0 + ){ + sqlite3 *db2; + sqlite3_stmt *pStmt2; + int nCase = 0; + /* This file is an SQL Archive containing many changesets */ + if( !bVerbose ){ printf("%s: ", fileTail(argv[i])); fflush(stdout); } + sqlite3_open_v2(":memory:", &db2, + SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE, "memdb"); + sqlite3_deserialize(db2, 0, pChgset, nChgset, nChgset, + SQLITE_DESERIALIZE_READONLY | SQLITE_DESERIALIZE_FREEONCLOSE); + sqlite3_create_function(db2, "sqlar_uncompress", 2, SQLITE_UTF8, 0, + sqlarUncompressFunc, 0, 0); + rc = sqlite3_prepare_v2(db2, "SELECT name, sqlar_uncompress(data,sz)" + " FROM sqlar", -1, &pStmt2, 0); + if( rc ){ + fprintf(stderr, "SQL error: %s\n", sqlite3_errmsg(db2)); + exit(1); + } + while( SQLITE_ROW==sqlite3_step(pStmt2) ){ + if( bVerbose ){ + printf("%s/%s:", fileTail(argv[i]), sqlite3_column_text(pStmt2,0)); + fflush(stdout); + } + runSql(db, "BEGIN"); + pChgset = (unsigned char*)sqlite3_column_blob(pStmt2, 1); + nChgset = sqlite3_column_bytes(pStmt2, 1); + rc = sqlite3changeset_apply(db, nChgset, pChgset, 0, conflictCall, 0); + if( bVerbose ){ + printf(" Ok. rc=%d\n", rc); + fflush(stdout); + } + runSql(db, "ROLLBACK"); + nCase++; + } + sqlite3_finalize(pStmt2); + sqlite3_close(db2); + if( bVerbose ) printf("%s: ", fileTail(argv[i])); + printf(" %d cases, 0 crashes\n", nCase); + fflush(stdout); + }else{ + /* The named file is just an ordinary changeset */ + printf("%s:", fileTail(argv[i])); + fflush(stdout); + runSql(db, "BEGIN"); + rc = sqlite3changeset_apply(db, nChgset, pChgset, 0, conflictCall, 0); + printf(" %d\n", rc); + fflush(stdout); + runSql(db, "ROLLBACK"); + sqlite3_free(pChgset); + } + } + }else + { + fprintf(stderr, "%s", zHelp); + exit(1); + } + rc = sqlite3_prepare_v2(db, "PRAGMA integrity_check;", -1, &pStmt, 0); + if( rc ){ + fprintf(stderr, "SQL error: %s\n", sqlite3_errmsg(db)); + exit(1); + } + if( sqlite3_step(pStmt)!=SQLITE_ROW + || strcmp((const char*)sqlite3_column_text(pStmt,0),"ok")!=0 + ){ + fprintf(stderr, "Integrity check failed!\n"); + do{ + fprintf(stderr, "%s\n", sqlite3_column_text(pStmt,0)); + }while( sqlite3_step(pStmt)==SQLITE_ROW ); + } + sqlite3_finalize(pStmt); + sqlite3_close(db); + if( sqlite3_memory_used()>0 ){ + fprintf(stderr, "memory leak of %lld bytes\n", + sqlite3_memory_used()); + exit(1); + } + return 0; +} |