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audit(4): add tests for bind(2), bindat(2), and listen(2)

Browse Source 
Submitted by:	aniketp
MFC after:	2 weeks
Sponsored by:	Google, Inc. (GSoC 2018)
Differential Revision:	https://reviews.freebsd.org/D15843
This commit is contained in:
Alan Somers 2018-06-16 15:25:08 +00:00
parent 71f0c895c1
commit babaf5cb1c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=335255
1 changed files with 205 additions and 7 deletions
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212
tests/sys/audit/network.c
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@ -27,19 +27,25 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <atf-c.h>
#include <fcntl.h>
#include <stdarg.h>
#include <unistd.h>
#include "utils.h"
#define SERVER_PATH "server"
static int sockfd;
static socklen_t len;
static struct pollfd fds[1];
static char extregex[80];
static const char *auclass = "nt";
static const char *failregex = "return,failure : Address family "
"not supported by protocol family";
static const char *nosupregex = "return,failure : Address family "
"not supported by protocol family";
static const char *invalregex = "return,failur.*Socket operation on non-socket";
/*
* Variadic function to close socket descriptors
@ -56,6 +62,17 @@ close_sockets(int count, ...)
va_end(socklist);
}
/*
* Assign local filesystem address to a Unix domain socket
*/
static void
assign_address(struct sockaddr_un *server)
{
memset(server, 0, sizeof(*server));
server->sun_family = AF_UNIX;
strcpy(server->sun_path, SERVER_PATH);
}
ATF_TC_WITH_CLEANUP(socket_success);
ATF_TC_HEAD(socket_success, tc)
@ -89,7 +106,7 @@ ATF_TC_HEAD(socket_failure, tc)
ATF_TC_BODY(socket_failure, tc)
{
snprintf(extregex, sizeof(extregex), "socket.*%s", failregex);
snprintf(extregex, sizeof(extregex), "socket.*%s", nosupregex);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: Unsupported value of 'domain' argument: 0 */
ATF_REQUIRE_EQ(-1, socket(0, SOCK_STREAM, 0));
@ -136,7 +153,7 @@ ATF_TC_HEAD(socketpair_failure, tc)
ATF_TC_BODY(socketpair_failure, tc)
{
snprintf(extregex, sizeof(extregex), "socketpair.*%s", failregex);
snprintf(extregex, sizeof(extregex), "socketpair.*%s", nosupregex);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: Unsupported value of 'domain' argument: 0 */
ATF_REQUIRE_EQ(-1, socketpair(0, SOCK_STREAM, 0, NULL));
@ -187,12 +204,12 @@ ATF_TC_HEAD(setsockopt_failure, tc)
ATF_TC_BODY(setsockopt_failure, tc)
{
int tr = 1;
const char *regex = "setsockopt.*fail.*Socket operation on non-socket";
snprintf(extregex, sizeof(extregex), "setsockopt.*%s", invalregex);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: No socket descriptor with the value of 0 exists */
/* Failure reason: Invalid socket descriptor */
ATF_REQUIRE_EQ(-1, setsockopt(0, SOL_SOCKET,
SO_REUSEADDR, &tr, sizeof(int)));
check_audit(fds, regex, pipefd);
check_audit(fds, extregex, pipefd);
}
ATF_TC_CLEANUP(setsockopt_failure, tc)
@ -201,6 +218,180 @@ ATF_TC_CLEANUP(setsockopt_failure, tc)
}
ATF_TC_WITH_CLEANUP(bind_success);
ATF_TC_HEAD(bind_success, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
"bind(2) call");
}
ATF_TC_BODY(bind_success, tc)
{
struct sockaddr_un server;
assign_address(&server);
len = sizeof(struct sockaddr_un);
/* Preliminary socket setup */
ATF_REQUIRE((sockfd = socket(PF_UNIX, SOCK_STREAM, 0)) != -1);
/* Check the presence of AF_UNIX address path in audit record */
snprintf(extregex, sizeof(extregex),
"bind.*unix.*%s.*return,success", SERVER_PATH);
FILE *pipefd = setup(fds, auclass);
ATF_REQUIRE_EQ(0, bind(sockfd, (struct sockaddr *)&server, len));
check_audit(fds, extregex, pipefd);
close(sockfd);
}
ATF_TC_CLEANUP(bind_success, tc)
{
cleanup();
}
ATF_TC_WITH_CLEANUP(bind_failure);
ATF_TC_HEAD(bind_failure, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
"bind(2) call");
}
ATF_TC_BODY(bind_failure, tc)
{
/* Preliminary socket setup */
struct sockaddr_un server;
assign_address(&server);
len = sizeof(struct sockaddr_un);
/* Check the presence of AF_UNIX path in audit record */
snprintf(extregex, sizeof(extregex),
"bind.*%s.*return,failure", SERVER_PATH);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: Invalid socket descriptor */
ATF_REQUIRE_EQ(-1, bind(0, (struct sockaddr *)&server, len));
check_audit(fds, extregex, pipefd);
}
ATF_TC_CLEANUP(bind_failure, tc)
{
cleanup();
}
ATF_TC_WITH_CLEANUP(bindat_success);
ATF_TC_HEAD(bindat_success, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
"bindat(2) call");
}
ATF_TC_BODY(bindat_success, tc)
{
struct sockaddr_un server;
assign_address(&server);
len = sizeof(struct sockaddr_un);
/* Preliminary socket setup */
ATF_REQUIRE((sockfd = socket(PF_UNIX, SOCK_STREAM, 0)) != -1);
/* Check the presence of socket descriptor in audit record */
snprintf(extregex, sizeof(extregex),
"bindat.*0x%x.*return,success", sockfd);
FILE *pipefd = setup(fds, auclass);
ATF_REQUIRE_EQ(0, bindat(AT_FDCWD, sockfd,
(struct sockaddr *)&server, len));
check_audit(fds, extregex, pipefd);
close(sockfd);
}
ATF_TC_CLEANUP(bindat_success, tc)
{
cleanup();
}
ATF_TC_WITH_CLEANUP(bindat_failure);
ATF_TC_HEAD(bindat_failure, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
"bindat(2) call");
}
ATF_TC_BODY(bindat_failure, tc)
{
/* Preliminary socket setup */
struct sockaddr_un server;
assign_address(&server);
len = sizeof(struct sockaddr_un);
snprintf(extregex, sizeof(extregex), "bindat.*%s", invalregex);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: Invalid socket descriptor */
ATF_REQUIRE_EQ(-1, bindat(AT_FDCWD, 0,
(struct sockaddr *)&server, len));
check_audit(fds, extregex, pipefd);
}
ATF_TC_CLEANUP(bindat_failure, tc)
{
cleanup();
}
ATF_TC_WITH_CLEANUP(listen_success);
ATF_TC_HEAD(listen_success, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
"listen(2) call");
}
ATF_TC_BODY(listen_success, tc)
{
struct sockaddr_un server;
assign_address(&server);
len = sizeof(struct sockaddr_un);
/* Preliminary socket setup */
ATF_REQUIRE((sockfd = socket(PF_UNIX, SOCK_STREAM, 0)) != -1);
ATF_REQUIRE_EQ(0, bind(sockfd, (struct sockaddr *)&server, len));
/* Check the presence of socket descriptor in the audit record */
snprintf(extregex, sizeof(extregex),
"listen.*0x%x.*return,success", sockfd);
FILE *pipefd = setup(fds, auclass);
ATF_REQUIRE_EQ(0, listen(sockfd, 1));
check_audit(fds, extregex, pipefd);
close(sockfd);
}
ATF_TC_CLEANUP(listen_success, tc)
{
cleanup();
}
ATF_TC_WITH_CLEANUP(listen_failure);
ATF_TC_HEAD(listen_failure, tc)
{
atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
"listen(2) call");
}
ATF_TC_BODY(listen_failure, tc)
{
snprintf(extregex, sizeof(extregex), "listen.*%s", invalregex);
FILE *pipefd = setup(fds, auclass);
/* Failure reason: Invalid socket descriptor */
ATF_REQUIRE_EQ(-1, listen(0, 1));
check_audit(fds, extregex, pipefd);
}
ATF_TC_CLEANUP(listen_failure, tc)
{
cleanup();
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, socket_success);
@ -210,5 +401,12 @@ ATF_TP_ADD_TCS(tp)
ATF_TP_ADD_TC(tp, setsockopt_success);
ATF_TP_ADD_TC(tp, setsockopt_failure);
ATF_TP_ADD_TC(tp, bind_success);
ATF_TP_ADD_TC(tp, bind_failure);
ATF_TP_ADD_TC(tp, bindat_success);
ATF_TP_ADD_TC(tp, bindat_failure);
ATF_TP_ADD_TC(tp, listen_success);
ATF_TP_ADD_TC(tp, listen_failure);
return (atf_no_error());
}