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/*
Copyright (C) 2009 Jiri Moskovcak (jmoskovc@redhat.com)
Copyright (C) 2009 RedHat inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "abrtlib.h"
#include "Daemon.h"
#include "ABRTException.h"
#include "DebugDump.h"
#include "CrashWatcher.h"
void CCrashWatcher::Status(const char *pMessage, const char* peer)
{
VERB1 log("Update('%s'): %s", peer, pMessage);
if (g_pCommLayer != NULL)
g_pCommLayer->Update(pMessage, peer);
}
void CCrashWatcher::Warning(const char *pMessage, const char* peer)
{
VERB1 log("Warning('%s'): %s", peer, pMessage);
if (g_pCommLayer != NULL)
g_pCommLayer->Warning(pMessage, peer);
}
CCrashWatcher::CCrashWatcher()
{
}
CCrashWatcher::~CCrashWatcher()
{
}
vector_map_crash_data_t GetCrashInfos(long caller_uid)
{
vector_map_crash_data_t retval;
log("Getting crash infos...");
try
{
vector_string_t crash_ids;
GetUUIDsOfCrash(caller_uid, crash_ids);
unsigned int ii;
for (ii = 0; ii < crash_ids.size(); ii++)
{
const char *crash_id = crash_ids[ii].c_str();
map_crash_data_t info;
mw_result_t res = FillCrashInfo(crash_id, info);
switch (res)
{
case MW_OK:
retval.push_back(info);
break;
case MW_ERROR:
error_msg("Dump directory for crash_id %s doesn't exist or misses crucial files, deleting", crash_id);
/* Deletes both DB record and dump dir */
DeleteDebugDump(crash_id, /*caller_uid:*/ 0);
break;
default:
break;
}
}
}
catch (CABRTException& e)
{
error_msg("%s", e.what());
}
return retval;
}
/*
* Called in two cases:
* (1) by StartJob dbus call -> CreateReportThread(), in the thread
* (2) by CreateReport dbus call
* In the second case, it finishes quickly, because previous
* StartJob dbus call already did all the processing, and we just retrieve
* the result from dump directory, which is fast.
*/
void CreateReport(const char* crash_id, long caller_uid, int force, map_crash_data_t& crashReport)
{
/* FIXME: starting from here, any shared data must be protected with a mutex.
* For example, CreateCrashReport does:
* g_pPluginManager->GetDatabase(g_settings_sDatabase.c_str());
* which is unsafe wrt concurrent updates to g_pPluginManager state.
*/
mw_result_t res = CreateCrashReport(crash_id, caller_uid, force, crashReport);
switch (res)
{
case MW_OK:
VERB2 log_map_crash_data(crashReport, "crashReport");
break;
case MW_IN_DB_ERROR:
error_msg("Can't find crash with id %s in database", crash_id);
break;
case MW_PLUGIN_ERROR:
error_msg("Particular analyzer plugin isn't loaded or there is an error within plugin(s)");
break;
default:
error_msg("Corrupted crash with id %s, deleting", crash_id);
DeleteDebugDump(crash_id, /*caller_uid:*/ 0);
break;
}
}
typedef struct thread_data_t {
pthread_t thread_id;
long caller_uid;
int force;
char* crash_id;
char* peer;
} thread_data_t;
static void* create_report(void* arg)
{
thread_data_t *thread_data = (thread_data_t *) arg;
/* Client name is per-thread, need to set it */
set_client_name(thread_data->peer);
try
{
log("Creating report...");
map_crash_data_t crashReport;
CreateReport(thread_data->crash_id, thread_data->caller_uid, thread_data->force, crashReport);
g_pCommLayer->JobDone(thread_data->peer);
}
catch (CABRTException& e)
{
error_msg("%s", e.what());
}
catch (...) {}
set_client_name(NULL);
/* free strduped strings */
free(thread_data->crash_id);
free(thread_data->peer);
free(thread_data);
/* Bogus value. pthreads require us to return void* */
return NULL;
}
int CreateReportThread(const char* crash_id, long caller_uid, int force, const char* pSender)
{
thread_data_t *thread_data = (thread_data_t *)xzalloc(sizeof(thread_data_t));
thread_data->crash_id = xstrdup(crash_id);
thread_data->caller_uid = caller_uid;
thread_data->force = force;
thread_data->peer = xstrdup(pSender);
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
int r = pthread_create(&thread_data->thread_id, &attr, create_report, thread_data);
pthread_attr_destroy(&attr);
if (r != 0)
{
free(thread_data->crash_id);
free(thread_data->peer);
free(thread_data);
/* The only reason this may happen is system-wide resource starvation,
* or ulimit is exceeded (someone floods us with CreateReport() dbus calls?)
*/
error_msg("Can't create thread");
return r;
}
VERB3 log("Thread %llx created", (unsigned long long)thread_data->thread_id);
return r;
}
/* Remove dump dir and its DB record */
int DeleteDebugDump(const char *crash_id, long caller_uid)
{
try
{
CDatabase* database = g_pPluginManager->GetDatabase(g_settings_sDatabase.c_str());
database->Connect();
database_row_t row = database->GetRow(crash_id);
if (row.m_sUUID == "")
{
database->DisConnect();
return ENOENT;
}
if (caller_uid != 0 /* not called by root */
&& row.m_sInformAll != "1"
&& to_string(caller_uid) != row.m_sUID
) {
database->DisConnect();
return EPERM;
}
database->DeleteRow(crash_id);
database->DisConnect();
const char *dump_dir = row.m_sDebugDumpDir.c_str();
if (dump_dir[0] != '\0')
{
delete_debug_dump_dir(dump_dir);
return 0; /* success */
}
}
catch (CABRTException& e)
{
error_msg("%s", e.what());
}
return EIO; /* generic failure code */
}
void DeleteDebugDump_by_dir(const char *dump_dir)
{
try
{
CDatabase* database = g_pPluginManager->GetDatabase(g_settings_sDatabase.c_str());
database->Connect();
database->DeleteRows_by_dir(dump_dir);
database->DisConnect();
delete_debug_dump_dir(dump_dir);
}
catch (CABRTException& e)
{
error_msg("%s", e.what());
}
}
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