f8e6f4aaed
If log_do_header() was called with overly long parameters, it'd generate improper output. Essentially, it'd be truncated at random point, in particular missing a newline at the end, so it'd run with the next field, usually MESSAGE=. log_do_header is called with parameters from compiled code (file name, lien nubmer, etc), so in practice this was unlikely to ever be a problem, but it is possible. In particular, if systemd was compiled from sources in some deeply nested directory (which happens for example in mock and other build roots), the filename could be very long. As a safety measure, let's truncate all parameters to 256 bytes. So we have 5 fields which are 256 bytes (plus the field name prefix), and a few other fields with fixed width. This must always fit in the 2048 byte buffer. I don't think there's much gain in calculating the required length precisely, since it's a lot of fields and a few bytes allocated on the stack don't matter.
90 lines
3 KiB
C
90 lines
3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stddef.h>
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#include <unistd.h>
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#include "format-util.h"
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#include "log.h"
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#include "process-util.h"
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#include "util.h"
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assert_cc(LOG_REALM_REMOVE_LEVEL(LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, LOG_FTP | LOG_DEBUG))
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== LOG_REALM_SYSTEMD);
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assert_cc(LOG_REALM_REMOVE_LEVEL(LOG_REALM_PLUS_LEVEL(LOG_REALM_UDEV, LOG_LOCAL7 | LOG_DEBUG))
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== LOG_REALM_UDEV);
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assert_cc((LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, LOG_LOCAL3 | LOG_DEBUG) & LOG_FACMASK)
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== LOG_LOCAL3);
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assert_cc((LOG_REALM_PLUS_LEVEL(LOG_REALM_UDEV, LOG_USER | LOG_INFO) & LOG_PRIMASK)
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== LOG_INFO);
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#define X10(x) x x x x x x x x x x
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#define X100(x) X10(X10(x))
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#define X1000(x) X100(X10(x))
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static void test_log_console(void) {
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log_struct(LOG_INFO,
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"MESSAGE=Waldo PID="PID_FMT, getpid_cached(),
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"SERVICE=piepapo",
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NULL);
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}
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static void test_log_journal(void) {
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log_struct(LOG_INFO,
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"MESSAGE=Foobar PID="PID_FMT, getpid_cached(),
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"SERVICE=foobar",
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NULL);
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log_struct(LOG_INFO,
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"MESSAGE=Foobar PID="PID_FMT, getpid_cached(),
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"FORMAT_STR_TEST=1=%i A=%c 2=%hi 3=%li 4=%lli 1=%p foo=%s 2.5=%g 3.5=%g 4.5=%Lg",
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(int) 1, 'A', (short) 2, (long int) 3, (long long int) 4, (void*) 1, "foo", (float) 2.5f, (double) 3.5, (long double) 4.5,
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"SUFFIX=GOT IT",
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NULL);
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}
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static void test_long_lines(void) {
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log_object_internal(LOG_NOTICE,
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EUCLEAN,
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X1000("abcd_") ".txt",
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1000000,
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X1000("fff") "unc",
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"OBJECT=",
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X1000("obj_") "ect",
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"EXTRA=",
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X1000("ext_") "tra",
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"asdfasdf %s asdfasdfa", "foobar");
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}
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int main(int argc, char* argv[]) {
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int target;
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for (target = 0; target < _LOG_TARGET_MAX; target++) {
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log_set_target(target);
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log_open();
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test_log_console();
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test_log_journal();
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test_long_lines();
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}
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return 0;
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}
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