static
int append_short_backtrace(struct strbuf *result, problem_data_t *problem_data, size_t max_text_size, bool print_item_name)
{
const problem_item *item = problem_data_get_item_or_NULL(problem_data,
FILENAME_BACKTRACE);
if (!item)
return 0; /* "I did not print anything" */
if (!(item->flags & CD_FLAG_TXT))
return 0; /* "I did not print anything" */
char *truncated = NULL;
if (strlen(item->content) >= max_text_size)
{
struct sr_location location;
sr_location_init(&location);
/* sr_gdb_stacktrace_parse modifies the input parameter */
char *content = item->content;
struct sr_gdb_stacktrace *backtrace = sr_gdb_stacktrace_parse((const char **)&content, &location);
if (!backtrace)
{
log(_("Can't parse backtrace"));
return 0;
}
/* Get optimized thread stack trace for 10 top most frames */
struct sr_gdb_thread *thread = sr_gdb_stacktrace_get_optimized_thread(backtrace, 10);
sr_gdb_stacktrace_free(backtrace);
if (!thread)
{
log(_("Can't find crash thread"));
return 0;
}
/* Cannot be NULL, it dies on memory error */
struct sr_strbuf *bt = sr_strbuf_new();
sr_gdb_thread_append_to_str(thread, bt, true);
sr_gdb_thread_free(thread);
truncated = sr_strbuf_free_nobuf(bt);
}
append_text(result,
/*item_name:*/ truncated ? "truncated_backtrace" : FILENAME_BACKTRACE,
/*content:*/ truncated ? truncated : item->content,
print_item_name
);
free(truncated);
return 1;
}
struct sr_core_stacktrace *
sr_core_stacktrace_from_gdb(const char *gdb_output, const char *core_file,
const char *exe_file, char **error_msg)
{
/* I'm not going to rewrite it now since the function is not being used. */
assert(error_msg);
/* Initialize error_msg to 'no error'. */
*error_msg = NULL;
struct core_handle *ch = open_coredump(core_file, exe_file, error_msg);
if (*error_msg)
return NULL;
struct sr_gdb_stacktrace *gdb_stacktrace;
struct sr_location location;
sr_location_init(&location);
gdb_stacktrace = sr_gdb_stacktrace_parse(&gdb_output, &location);
if (!gdb_stacktrace)
{
*error_msg = sr_location_to_string(&location);
core_handle_free(ch);
return NULL;
}
struct sr_core_stacktrace *core_stacktrace = sr_core_stacktrace_new();
for (struct sr_gdb_thread *gdb_thread = gdb_stacktrace->threads;
gdb_thread;
gdb_thread = gdb_thread->next)
{
struct sr_core_thread *core_thread = sr_core_thread_new();
for (struct sr_gdb_frame *gdb_frame = gdb_thread->frames;
gdb_frame;
gdb_frame = gdb_frame->next)
{
if (gdb_frame->signal_handler_called)
continue;
struct sr_core_frame *core_frame = resolve_frame(ch->dwfl,
gdb_frame->address, false);
core_thread->frames = sr_core_frame_append(core_thread->frames,
core_frame);
}
if (sr_gdb_stacktrace_find_crash_thread(gdb_stacktrace) == gdb_thread)
{
core_stacktrace->crash_thread = core_thread;
}
core_stacktrace->threads = sr_core_thread_append(
core_stacktrace->threads, core_thread);
}
core_stacktrace->signal = get_signal_number(ch->eh, core_file);
core_stacktrace->executable = realpath(exe_file, NULL);
core_handle_free(ch);
sr_gdb_stacktrace_free(gdb_stacktrace);
return core_stacktrace;
}
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;
}
struct sr_core_stacktrace *
sr_core_stacktrace_create(const char *gdb_stacktrace_text,
const char *unstrip_text,
const char *executable_path)
{
// Parse the GDB stacktrace.
struct sr_location location;
sr_location_init(&location);
struct sr_gdb_stacktrace *gdb_stacktrace =
sr_gdb_stacktrace_parse(&gdb_stacktrace_text, &location);
if (!gdb_stacktrace)
{
warn("Unable to parse stacktrace: %d:%d: %s\n",
location.line, location.column, location.message);
return NULL;
}
// Parse the unstrip output.
struct sr_unstrip_entry *unstrip = sr_unstrip_parse(unstrip_text);
if (!unstrip)
{
warn("Unable to parse unstrip output.");
sr_gdb_stacktrace_free(gdb_stacktrace);
return NULL;
}
// Create the core stacktrace
struct sr_core_stacktrace *core_stacktrace =
sr_core_stacktrace_new();
struct sr_gdb_thread *gdb_thread = gdb_stacktrace->threads;
while (gdb_thread)
{
struct sr_core_thread *core_thread = sr_core_thread_new();
struct sr_gdb_frame *gdb_frame = gdb_thread->frames;
while (gdb_frame)
{
gdb_frame = gdb_frame->next;
struct sr_core_frame *core_frame = sr_core_frame_new();
core_frame->address = gdb_frame->address;
struct sr_unstrip_entry *unstrip_entry =
sr_unstrip_find_address(unstrip, gdb_frame->address);
if (unstrip_entry)
{
core_frame->build_id = sr_strdup(unstrip_entry->build_id);
core_frame->build_id_offset = core_frame->address - unstrip_entry->start;
core_frame->file_name = sr_strdup(unstrip_entry->file_name);
}
if (gdb_frame->function_name &&
0 != strcmp(gdb_frame->function_name, "??"))
{
core_frame->function_name =
sr_strdup(gdb_frame->function_name);
}
core_thread->frames = sr_core_frame_append(core_thread->frames, core_frame);
}
core_stacktrace->threads =
sr_core_thread_append(core_stacktrace->threads,
core_thread);
gdb_thread = gdb_thread->next;
}
sr_unstrip_free(unstrip);
sr_gdb_stacktrace_free(gdb_stacktrace);
return core_stacktrace;
}
