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/*
Copyright (C) 2011,2014 ABRT team
Copyright (C) 2011,2014 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.
Authors:
Anton Arapov <anton@redhat.com>
Arjan van de Ven <arjan@linux.intel.com>
*/
#include <syslog.h>
#include "libabrt.h"
#include "oops-utils.h"
#define MAX_SCAN_BLOCK (4*1024*1024)
#define READ_AHEAD (10*1024)
#define ABRT_DUMP_OOPS_ANALYZER "abrt-oops"
static void scan_syslog_file(GList **oops_list, int fd)
{
struct stat st;
struct stat *statbuf = &st;
/* Try to not allocate an absurd amount of memory */
int sz = MAX_SCAN_BLOCK - READ_AHEAD;
/* If it's a real file, estimate size after cur pos */
off_t cur_pos = lseek(fd, 0, SEEK_CUR);
if (cur_pos >= 0 && fstat(fd, statbuf) == 0 && S_ISREG(statbuf->st_mode))
{
off_t size_to_read = statbuf->st_size - cur_pos;
if (size_to_read >= 0 && sz > size_to_read)
sz = size_to_read;
}
/*
* In theory we have a race here, since someone can spew
* to /var/log/messages before we read it in...
* We try to deal with it by reading READ_AHEAD extra.
*/
sz += READ_AHEAD;
char *buffer = xzalloc(sz);
for (;;)
{
int r = full_read(fd, buffer, sz-1);
if (r <= 0)
break;
log_debug("Read %u bytes", r);
koops_extract_oopses(oops_list, buffer, r);
//TODO: rewind to last newline?
}
free(buffer);
}
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 = _(
"& [-vusoxm] [-d DIR]/[-D] [FILE]\n"
"\n"
"Extract oops from FILE (or standard input)"
);
enum {
OPT_v = 1 << 0,
OPT_s = 1 << 1,
OPT_o = 1 << 2,
OPT_d = 1 << 3,
OPT_D = 1 << 4,
OPT_u = 1 << 5,
OPT_x = 1 << 6,
OPT_t = 1 << 7,
OPT_m = 1 << 8,
};
char *problem_dir = NULL;
char *dump_location = NULL;
/* Keep enum above and order of options below in sync! */
struct options program_options[] = {
OPT__VERBOSE(&g_verbose),
OPT_BOOL( 's', NULL, NULL, _("Log to syslog")),
OPT_BOOL( 'o', NULL, NULL, _("Print found oopses on standard output")),
/* oopses don't contain any sensitive info, and even
* the old koops app was showing the oopses to all users
*/
OPT_STRING('d', NULL, &dump_location, "DIR", _("Create new problem directory in DIR for every oops found")),
OPT_BOOL( 'D', NULL, NULL, _("Same as -d DumpLocation, DumpLocation is specified in abrt.conf")),
OPT_STRING('u', NULL, &problem_dir, "PROBLEM", _("Save the extracted information in PROBLEM")),
OPT_BOOL( 'x', NULL, NULL, _("Make the problem directory world readable")),
OPT_BOOL( 't', NULL, NULL, _("Throttle problem directory creation to 1 per second")),
OPT_BOOL( 'm', NULL, NULL, _("Print search string(s) to stdout and exit")),
OPT_END()
};
unsigned opts = parse_opts(argc, argv, program_options, program_usage_string);
export_abrt_envvars(0);
msg_prefix = g_progname;
if ((opts & OPT_s) || getenv("ABRT_SYSLOG"))
{
logmode = LOGMODE_JOURNAL;
}
if (opts & OPT_m)
{
char *oops_string_filter_regex = abrt_oops_string_filter_regex();
if (oops_string_filter_regex)
{
regex_t filter_re;
if (regcomp(&filter_re, oops_string_filter_regex, REG_NOSUB) != 0)
perror_msg_and_die(_("Failed to compile regex"));
const regex_t *filter[] = { &filter_re, NULL };
koops_print_suspicious_strings_filtered(filter);
regfree(&filter_re);
free(oops_string_filter_regex);
}
else
koops_print_suspicious_strings();
return 1;
}
if (opts & OPT_D)
{
if (opts & OPT_d)
show_usage_and_die(program_usage_string, program_options);
load_abrt_conf();
dump_location = g_settings_dump_location;
g_settings_dump_location = NULL;
free_abrt_conf_data();
}
int oops_utils_flags = 0;
if ((opts & OPT_x))
oops_utils_flags |= ABRT_OOPS_WORLD_READABLE;
if ((opts & OPT_t))
oops_utils_flags |= ABRT_OOPS_THROTTLE_CREATION;
if ((opts & OPT_o))
oops_utils_flags |= ABRT_OOPS_PRINT_STDOUT;
argv += optind;
if (argv[0])
xmove_fd(xopen(argv[0], O_RDONLY), STDIN_FILENO);
GList *oops_list = NULL;
scan_syslog_file(&oops_list, STDIN_FILENO);
unsigned errors = 0;
if (opts & OPT_u)
{
log("Updating problem directory");
switch (g_list_length(oops_list))
{
case 0:
{
error_msg(_("Can't update the problem: no oops found"));
errors = 1;
break;
}
default:
{
log_notice(_("More oopses found: process only the first one"));
}
/* falls trought */
case 1:
{
struct dump_dir *dd = dd_opendir(problem_dir, /*open for writing*/0);
if (dd)
{
abrt_oops_save_data_in_dump_dir(dd, (char *)oops_list->data, /*no proc modules*/NULL);
dd_close(dd);
}
}
}
}
else
errors = abrt_oops_process_list(oops_list, dump_location,
ABRT_DUMP_OOPS_ANALYZER, oops_utils_flags);
list_free_with_free(oops_list);
//oops_list = NULL;
return errors;
}