/*- * Copyright (c) 2018 Aniket Pandey * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * SUCH DAMAGE. */ /* * Note: open(2) and openat(2) have 12 events each for various values of 'flag' * Please see: contrib/openbsm/etc/audit_event#L261 * * 270:AUE_OPENAT_R:openat(2) - read:fr * 271:AUE_OPENAT_RC:openat(2) - read,creat:fc,fr,fa,fm * 272:AUE_OPENAT_RT:openat(2) - read,trunc:fd,fr,fa,fm * 273:AUE_OPENAT_RTC:openat(2) - read,creat,trunc:fc,fd,fr,fa,fm * 274:AUE_OPENAT_W:openat(2) - write:fw * 275:AUE_OPENAT_WC:openat(2) - write,creat:fc,fw,fa,fm * 276:AUE_OPENAT_WT:openat(2) - write,trunc:fd,fw,fa,fm * 277:AUE_OPENAT_WTC:openat(2) - write,creat,trunc:fc,fd,fw,fa,fm * 278:AUE_OPENAT_RW:openat(2) - read,write:fr,fw * 279:AUE_OPENAT_RWC:openat(2) - read,write,create:fc,fw,fr,fa,fm * 280:AUE_OPENAT_RWT:openat(2) - read,write,trunc:fd,fw,fr,fa,fm * 281:AUE_OPENAT_RWTC:openat(2) - read,write,creat,trunc:fc,fd,fw,fr,fa,fm */ #include <sys/syscall.h> #include <atf-c.h> #include <fcntl.h> #include "utils.h" static struct pollfd fds[1]; static mode_t o_mode = 0777; static int filedesc; static char extregex[80]; static const char *path = "fileforaudit"; static const char *errpath = "adirhasnoname/fileforaudit"; /* * Define test-cases for success and failure modes of both open(2) and openat(2) */ #define OPEN_AT_TC_DEFINE(mode, regex, flag, class) \ ATF_TC_WITH_CLEANUP(open_ ## mode ## _success); \ ATF_TC_HEAD(open_ ## mode ## _success, tc) \ { \ atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " \ "open(2) call with flags = %s", #flag); \ } \ ATF_TC_BODY(open_ ## mode ## _success, tc) \ { \ snprintf(extregex, sizeof(extregex), \ "open.*%s.*fileforaudit.*return,success", regex); \ /* File needs to exist for successful open(2) invocation */ \ ATF_REQUIRE((filedesc = open(path, O_CREAT, o_mode)) != -1); \ FILE *pipefd = setup(fds, class); \ ATF_REQUIRE(syscall(SYS_open, path, flag) != -1); \ check_audit(fds, extregex, pipefd); \ close(filedesc); \ } \ ATF_TC_CLEANUP(open_ ## mode ## _success, tc) \ { \ cleanup(); \ } \ ATF_TC_WITH_CLEANUP(open_ ## mode ## _failure); \ ATF_TC_HEAD(open_ ## mode ## _failure, tc) \ { \ atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " \ "open(2) call with flags = %s", #flag); \ } \ ATF_TC_BODY(open_ ## mode ## _failure, tc) \ { \ snprintf(extregex, sizeof(extregex), \ "open.*%s.*fileforaudit.*return,failure", regex); \ FILE *pipefd = setup(fds, class); \ ATF_REQUIRE_EQ(-1, syscall(SYS_open, errpath, flag)); \ check_audit(fds, extregex, pipefd); \ } \ ATF_TC_CLEANUP(open_ ## mode ## _failure, tc) \ { \ cleanup(); \ } \ ATF_TC_WITH_CLEANUP(openat_ ## mode ## _success); \ ATF_TC_HEAD(openat_ ## mode ## _success, tc) \ { \ atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " \ "openat(2) call with flags = %s", #flag); \ } \ ATF_TC_BODY(openat_ ## mode ## _success, tc) \ { \ int filedesc2; \ snprintf(extregex, sizeof(extregex), \ "openat.*%s.*fileforaudit.*return,success", regex); \ /* File needs to exist for successful openat(2) invocation */ \ ATF_REQUIRE((filedesc = open(path, O_CREAT, o_mode)) != -1); \ FILE *pipefd = setup(fds, class); \ ATF_REQUIRE((filedesc2 = openat(AT_FDCWD, path, flag)) != -1); \ check_audit(fds, extregex, pipefd); \ close(filedesc2); \ close(filedesc); \ } \ ATF_TC_CLEANUP(openat_ ## mode ## _success, tc) \ { \ cleanup(); \ } \ ATF_TC_WITH_CLEANUP(openat_ ## mode ## _failure); \ ATF_TC_HEAD(openat_ ## mode ## _failure, tc) \ { \ atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " \ "openat(2) call with flags = %s", #flag); \ } \ ATF_TC_BODY(openat_ ## mode ## _failure, tc) \ { \ snprintf(extregex, sizeof(extregex), \ "openat.*%s.*fileforaudit.*return,failure", regex); \ FILE *pipefd = setup(fds, class); \ ATF_REQUIRE_EQ(-1, openat(AT_FDCWD, errpath, flag)); \ check_audit(fds, extregex, pipefd); \ } \ ATF_TC_CLEANUP(openat_ ## mode ## _failure, tc) \ { \ cleanup(); \ } /* * Add both success and failure modes of open(2) and openat(2) */ #define OPEN_AT_TC_ADD(tp, mode) \ do { \ ATF_TP_ADD_TC(tp, open_ ## mode ## _success); \ ATF_TP_ADD_TC(tp, open_ ## mode ## _failure); \ ATF_TP_ADD_TC(tp, openat_ ## mode ## _success); \ ATF_TP_ADD_TC(tp, openat_ ## mode ## _failure); \ } while (0) /* * Each of the 12 OPEN_AT_TC_DEFINE statement is a group of 4 test-cases * corresponding to separate audit events for open(2) and openat(2) */ OPEN_AT_TC_DEFINE(read, "read", O_RDONLY, "fr") OPEN_AT_TC_DEFINE(read_creat, "read,creat", O_RDONLY | O_CREAT, "fr") OPEN_AT_TC_DEFINE(read_trunc, "read,trunc", O_RDONLY | O_TRUNC, "fr") OPEN_AT_TC_DEFINE(read_creat_trunc, "read,creat,trunc", O_RDONLY | O_CREAT | O_TRUNC, "fr") OPEN_AT_TC_DEFINE(write, "write", O_WRONLY, "fw") OPEN_AT_TC_DEFINE(write_creat, "write,creat", O_WRONLY | O_CREAT, "fw") OPEN_AT_TC_DEFINE(write_trunc, "write,trunc", O_WRONLY | O_TRUNC, "fw") OPEN_AT_TC_DEFINE(write_creat_trunc, "write,creat,trunc", O_WRONLY | O_CREAT | O_TRUNC, "fw") OPEN_AT_TC_DEFINE(read_write, "read,write", O_RDWR, "fr") OPEN_AT_TC_DEFINE(read_write_creat, "read,write,creat", O_RDWR | O_CREAT, "fw") OPEN_AT_TC_DEFINE(read_write_trunc, "read,write,trunc", O_RDWR | O_TRUNC, "fr") OPEN_AT_TC_DEFINE(read_write_creat_trunc, "read,write,creat,trunc", O_RDWR | O_CREAT | O_TRUNC, "fw") ATF_TP_ADD_TCS(tp) { OPEN_AT_TC_ADD(tp, read); OPEN_AT_TC_ADD(tp, read_creat); OPEN_AT_TC_ADD(tp, read_trunc); OPEN_AT_TC_ADD(tp, read_creat_trunc); OPEN_AT_TC_ADD(tp, write); OPEN_AT_TC_ADD(tp, write_creat); OPEN_AT_TC_ADD(tp, write_trunc); OPEN_AT_TC_ADD(tp, write_creat_trunc); OPEN_AT_TC_ADD(tp, read_write); OPEN_AT_TC_ADD(tp, read_write_creat); OPEN_AT_TC_ADD(tp, read_write_trunc); OPEN_AT_TC_ADD(tp, read_write_creat_trunc); return (atf_no_error()); }