void klee_make_symbolic(void *array, size_t nbytes, const char *name) {
static int rand_init = -1;
if (rand_init == -1) {
if (getenv("KLEE_RANDOM")) {
struct timeval tv;
gettimeofday(&tv, 0);
rand_init = 1;
srand(tv.tv_sec ^ tv.tv_usec);
} else {
rand_init = 0;
}
}
if (rand_init) {
if (!strcmp(name,"syscall_a0")) {
unsigned long long *v = array;
assert(nbytes == 8);
*v = rand() % 69;
} else {
char *c = array;
size_t i;
for (i=0; i<nbytes; i++)
c[i] = rand_byte();
}
return;
}
if (!testData) {
char tmp[256];
char *name = getenv("KTEST_FILE");
if (!name) {
fprintf(stdout, "KLEE-RUNTIME: KTEST_FILE not set, please enter .ktest path: ");
fflush(stdout);
name = tmp;
if (!fgets(tmp, sizeof tmp, stdin) || !strlen(tmp)) {
fprintf(stderr, "KLEE-RUNTIME: cannot replay, no KTEST_FILE or user input\n");
exit(1);
}
tmp[strlen(tmp)-1] = '\0'; /* kill newline */
}
testData = kTest_fromFile(name);
if (!testData) {
fprintf(stderr, "KLEE-RUNTIME: unable to open .ktest file\n");
exit(1);
}
}
if (testPosition >= testData->numObjects) {
fprintf(stderr, "ERROR: out of inputs, using zero\n");
memset(array, 0, nbytes);
} else {
KTestObject *o = &testData->objects[testPosition++];
memcpy(array, o->bytes, nbytes<o->numBytes ? nbytes : o->numBytes);
if (nbytes != o->numBytes) {
fprintf(stderr, "ERROR: object sizes differ\n");
if (o->numBytes < nbytes)
memset((char*) array + o->numBytes, 0, nbytes - o->numBytes);
}
}
}
int main(int argc, char** argv) {
int prg_argc;
char ** prg_argv;
progname = argv[0];
if (argc < 3)
usage();
/* Special case hack for only creating files and not actually executing the
* program.
*/
if (strcmp(argv[1], "--create-files-only") == 0) {
if (argc != 3)
usage();
char* input_fname = argv[2];
input = kTest_fromFile(input_fname);
if (!input) {
fprintf(stderr, "%s: error: input file %s not valid.\n", progname,
input_fname);
exit(1);
}
prg_argc = input->numArgs;
prg_argv = input->args;
prg_argv[0] = argv[1];
klee_init_env(&prg_argc, &prg_argv);
replay_create_files(&__exe_fs);
return 0;
}
/* Normal execution path ... */
char* executable = argv[1];
/* Verify the executable exists. */
FILE *f = fopen(executable, "r");
if (!f) {
fprintf(stderr, "Error: executable %s not found.\n", executable);
exit(1);
}
fclose(f);
int idx = 0;
for (idx = 2; idx != argc; ++idx) {
char* input_fname = argv[idx];
unsigned i;
input = kTest_fromFile(input_fname);
if (!input) {
fprintf(stderr, "%s: error: input file %s not valid.\n", progname,
input_fname);
exit(1);
}
obj_index = 0;
prg_argc = input->numArgs;
prg_argv = input->args;
prg_argv[0] = argv[1];
klee_init_env(&prg_argc, &prg_argv);
if (idx > 2)
fprintf(stderr, "\n");
fprintf(stderr, "%s: TEST CASE: %s\n", progname, input_fname);
fprintf(stderr, "%s: ARGS: ", progname);
for (i=0; i != (unsigned) prg_argc; ++i) {
char *s = prg_argv[i];
if (s[0]=='A' && s[1] && !s[2]) s[1] = '\0';
fprintf(stderr, "\"%s\" ", prg_argv[i]);
}
fprintf(stderr, "\n");
/* Run the test case machinery in a subprocess, eventually this parent
process should be a script or something which shells out to the actual
execution tool. */
int pid = fork();
if (pid < 0) {
perror("fork");
_exit(66);
} else if (pid == 0) {
/* Create the input files, pipes, etc., and run the process. */
replay_create_files(&__exe_fs);
run_monitored(executable, prg_argc, prg_argv);
_exit(0);
} else {
/* Wait for the test case. */
int res, status;
do {
res = waitpid(pid, &status, 0);
} while (res < 0 && errno == EINTR);
if (res < 0) {
perror("waitpid");
_exit(66);
}
}
}
return 0;
}
int main(int argc, char** argv) {
int prg_argc;
char ** prg_argv;
progname = argv[0];
if (argc < 3)
usage();
int c, opt_index;
while ((c = getopt_long(argc, argv, "f:r:", long_options, &opt_index)) != -1) {
switch (c) {
case 'f': {
/* Special case hack for only creating files and not actually executing
* the program.
*/
if (argc != 3)
usage();
char* input_fname = optarg;
input = kTest_fromFile(input_fname);
if (!input) {
fprintf(stderr, "%s: error: input file %s not valid.\n", progname,
input_fname);
exit(1);
}
prg_argc = input->numArgs;
prg_argv = input->args;
prg_argv[0] = argv[1];
klee_init_env(&prg_argc, &prg_argv);
replay_create_files(&__exe_fs);
return 0;
}
case 'r':
rootdir = optarg;
break;
}
}
/* Normal execution path ... */
char* executable = argv[optind];
/* make sure this process has the CAP_SYS_CHROOT capability. */
if (rootdir)
ensure_capsyschroot(progname);
/* rootdir should be a prefix of executable's path. */
if (rootdir && strstr(executable, rootdir) != executable) {
fprintf(stderr, "Error: chroot: root dir should be a parent dir of executable.\n");
exit(1);
}
/* Verify the executable exists. */
FILE *f = fopen(executable, "r");
if (!f) {
fprintf(stderr, "Error: executable %s not found.\n", executable);
exit(1);
}
fclose(f);
int idx = 0;
for (idx = optind + 1; idx != argc; ++idx) {
char* input_fname = argv[idx];
unsigned i;
input = kTest_fromFile(input_fname);
if (!input) {
fprintf(stderr, "%s: error: input file %s not valid.\n", progname,
input_fname);
exit(1);
}
obj_index = 0;
prg_argc = input->numArgs;
prg_argv = input->args;
prg_argv[0] = argv[optind];
klee_init_env(&prg_argc, &prg_argv);
if (idx > 2)
fprintf(stderr, "\n");
fprintf(stderr, "%s: TEST CASE: %s\n", progname, input_fname);
fprintf(stderr, "%s: ARGS: ", progname);
for (i=0; i != (unsigned) prg_argc; ++i) {
char *s = prg_argv[i];
if (s[0]=='A' && s[1] && !s[2]) s[1] = '\0';
fprintf(stderr, "\"%s\" ", prg_argv[i]);
}
fprintf(stderr, "\n");
/* Run the test case machinery in a subprocess, eventually this parent
process should be a script or something which shells out to the actual
execution tool. */
int pid = fork();
if (pid < 0) {
perror("fork");
_exit(66);
} else if (pid == 0) {
/* Create the input files, pipes, etc., and run the process. */
replay_create_files(&__exe_fs);
run_monitored(executable, prg_argc, prg_argv);
_exit(0);
} else {
/* Wait for the test case. */
int res, status;
do {
res = waitpid(pid, &status, 0);
} while (res < 0 && errno == EINTR);
if (res < 0) {
perror("waitpid");
_exit(66);
}
}
}
return 0;
}