int koops_hash_str_ext(char result[SHA1_RESULT_LEN*2 + 1], const char *oops_buf, int frame_count, int duphash_flags)
{
char *hash_str = NULL, *error = NULL;
int bad = 0;
struct sr_stacktrace *stacktrace = sr_stacktrace_parse(SR_REPORT_KERNELOOPS,
oops_buf, &error);
if (!stacktrace)
{
log_debug("Failed to parse koops: %s", error);
free(error);
bad = 1;
goto end;
}
struct sr_thread *thread = sr_stacktrace_find_crash_thread(stacktrace);
if (!thread)
{
log_debug("Failed to find crash thread");
bad = 1;
goto end;
}
if (g_verbose >= 3)
{
hash_str = sr_thread_get_duphash(thread, frame_count, NULL,
duphash_flags|SR_DUPHASH_NOHASH);
if (hash_str)
log("Generating duphash: '%s'", hash_str);
else
log("Nothing useful for duphash");
free(hash_str);
}
hash_str = sr_thread_get_duphash(thread, frame_count, NULL, duphash_flags);
if (hash_str)
{
strncpy(result, hash_str, SHA1_RESULT_LEN*2);
result[SHA1_RESULT_LEN*2] = '\0';
free(hash_str);
}
else
bad = 1;
end:
sr_stacktrace_free(stacktrace);
return bad;
}
PyObject *
sr_py_base_thread_get_duphash(PyObject *self, PyObject *args, PyObject *kwds)
{
const char *prefix = NULL;
int frames = 0, flags = 0;
static const char *kwlist[] = { "frames", "flags", "prefix", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|iis", (char **)kwlist,
&frames, &flags, &prefix))
return NULL;
struct sr_py_base_thread *this =
(struct sr_py_base_thread *)self;
if (frames_prepare_linked_list(this) < 0)
return NULL;
char *hash = sr_thread_get_duphash((struct sr_thread *)this->thread,
frames, (char *)prefix, flags);
if (!hash)
{
PyErr_SetString(PyExc_RuntimeError, "cannot obtain duphash");
return NULL;
}
PyObject *result = PyString_FromString(hash);
free(hash);
return result;
}
int main(int argc, char **argv)
{
/* I18n */
setlocale(LC_ALL, "");
#if ENABLE_NLS
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
#endif
abrt_init(argv);
/* Can't keep these strings/structs static: _() doesn't support that */
const char *program_usage_string = _(
"& [options] -d DIR\n"
"\n"
"Analyzes C/C++ backtrace, generates duplication hash, backtrace rating,\n"
"and identifies crash function in problem directory DIR"
);
enum {
OPT_v = 1 << 0,
OPT_d = 1 << 1
};
/* Keep enum above and order of options below in sync! */
struct options program_options[] = {
OPT__VERBOSE(&g_verbose),
OPT_STRING('d', NULL, &dump_dir_name, "DIR", _("Problem directory")),
OPT_END()
};
/*unsigned opts =*/ parse_opts(argc, argv, program_options, program_usage_string);
export_abrt_envvars(0);
struct dump_dir *dd = dd_opendir(dump_dir_name, /*flags:*/ 0);
if (!dd)
return 1;
char *component = dd_load_text(dd, FILENAME_COMPONENT);
/* Read backtrace */
char *backtrace_str = dd_load_text_ext(dd, FILENAME_BACKTRACE,
DD_LOAD_TEXT_RETURN_NULL_ON_FAILURE);
if (!backtrace_str)
{
dd_close(dd);
return 1;
}
/* Compute backtrace hash */
struct sr_location location;
sr_location_init(&location);
const char *backtrace_str_ptr = backtrace_str;
struct sr_gdb_stacktrace *backtrace = sr_gdb_stacktrace_parse(&backtrace_str_ptr, &location);
free(backtrace_str);
/* Store backtrace hash */
if (!backtrace)
{
/*
* The parser failed. Compute the duphash from the executable
* instead of a backtrace.
* and component only. This is not supposed to happen often.
*/
log(_("Backtrace parsing failed for %s"), dump_dir_name);
log("%d:%d: %s", location.line, location.column, location.message);
struct strbuf *emptybt = strbuf_new();
char *executable = dd_load_text(dd, FILENAME_EXECUTABLE);
strbuf_prepend_str(emptybt, executable);
free(executable);
strbuf_prepend_str(emptybt, component);
log_debug("Generating duphash: %s", emptybt->buf);
char hash_str[SHA1_RESULT_LEN*2 + 1];
str_to_sha1str(hash_str, emptybt->buf);
dd_save_text(dd, FILENAME_DUPHASH, hash_str);
/*
* Other parts of ABRT assume that if no rating is available,
* it is ok to allow reporting of the bug. To be sure no bad
* backtrace is reported, rate the backtrace with the lowest
* rating.
*/
dd_save_text(dd, FILENAME_RATING, "0");
strbuf_free(emptybt);
free(component);
dd_close(dd);
/* Report success even if the parser failed, as the backtrace
* has been created and rated. The failure is caused by a flaw
* in the parser, not in the backtrace.
*/
return 0;
}
/* Compute duplication hash. */
struct sr_thread *crash_thread =
(struct sr_thread *)sr_gdb_stacktrace_find_crash_thread(backtrace);
if (crash_thread)
{
char *hash_str;
if (g_verbose >= 3)
{
hash_str = sr_thread_get_duphash(crash_thread, 3, component,
SR_DUPHASH_NOHASH);
log("Generating duphash: %s", hash_str);
free(hash_str);
}
hash_str = sr_thread_get_duphash(crash_thread, 3, component,
SR_DUPHASH_NORMAL);
dd_save_text(dd, FILENAME_DUPHASH, hash_str);
free(hash_str);
}
else
log(_("Crash thread not found"));
/* Compute the backtrace rating. */
float quality = sr_gdb_stacktrace_quality_complex(backtrace);
const char *rating;
if (quality < 0.6f)
rating = "0";
else if (quality < 0.7f)
rating = "1";
else if (quality < 0.8f)
rating = "2";
else if (quality < 0.9f)
rating = "3";
else
rating = "4";
dd_save_text(dd, FILENAME_RATING, rating);
/* Get the function name from the crash frame. */
struct sr_gdb_frame *crash_frame = sr_gdb_stacktrace_get_crash_frame(backtrace);
if (crash_frame)
{
if (crash_frame->function_name &&
0 != strcmp(crash_frame->function_name, "??"))
{
dd_save_text(dd, FILENAME_CRASH_FUNCTION, crash_frame->function_name);
}
sr_gdb_frame_free(crash_frame);
}
sr_gdb_stacktrace_free(backtrace);
dd_close(dd);
free(component);
return 0;
}
