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/* $OpenBSD: unixsock_test.c,v 1.3 2017/03/08 19:28:47 deraadt Exp $ */
/* Written by Claudio Jeker in 2011 */
/* Public domain */
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <err.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
char path[1024];
char *dir;
int
test_bind(struct sockaddr_un *sun, socklen_t slen)
{
int s, e, r;
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s == -1)
err(1, "socket");
r = bind(s, (struct sockaddr *)sun, slen);
e = errno;
close(s);
sun->sun_path[slen - 2] = '\0';
unlink(sun->sun_path);
errno = e;
return r;
}
int
test_connect(struct sockaddr_un *sun, socklen_t slen, struct sockaddr_un *b)
{
int s, s2, e, r;
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s == -1)
err(1, "socket");
s2 = socket(AF_UNIX, SOCK_STREAM, 0);
if (s2 == -1)
err(1, "socket");
if (bind(s2, (struct sockaddr *)b, sizeof(*b)) == -1)
err(1, "bind");
if (listen(s2, 5) == -1)
err(1, "listen");
r = connect(s, (struct sockaddr *)sun, slen);
e = errno;
close(s);
close(s2);
unlink(b->sun_path);
errno = e;
return r;
}
struct test {
socklen_t len;
int r;
} t[] = {
{30, 0},
{50, 0},
{100, 0},
{102, 0},
{103, 0},
{104, -1},
{105, -1},
{110, -1},
{200, -1},
{0, 0}
};
int
main()
{
struct sockaddr_storage ss;
struct sockaddr_un *sun, sun2;
char dir_template[] = "/tmp/peer.XXXXXXXXXX";
char aaa[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
int i, fail = 0;
dir = mkdtemp(dir_template);
if (!dir)
err(1, "mkdtemp");
if (chdir(dir) == -1)
err(1, "chdir");
snprintf(path, sizeof path, "%s/%s", dir, "socket");
for (i = 0; t[i].len != 0; i++) {
socklen_t slen = t[i].len;
memset(&ss, 0xfe, sizeof(ss));
sun = (struct sockaddr_un *)&ss;
sun->sun_family = AF_UNIX;
memset(&sun2, 0, sizeof(sun2));
sun2.sun_family = AF_UNIX;
snprintf(sun->sun_path, sizeof(ss) - 2, "%s.%.*s", path,
(int)(slen - strlen(path) - 1), aaa);
snprintf(sun2.sun_path, sizeof(sun2) - 2, "%s.%.*s", "socket",
(int)(slen - strlen(path) - 1), aaa);
if (test_bind(sun, slen + 2) != t[i].r) {
warn("FAIL: bind(\"%s\") len %d", sun->sun_path,
slen + 2);
fail = 1;
}
if (test_bind(sun, slen + 3) != t[i].r) {
warn("FAIL2: bind(\"%s\") len %d", sun->sun_path,
slen + 3);
fail = 1;
}
if (sizeof(*sun) >= slen + 2 &&
test_bind(sun, sizeof(*sun)) != t[i].r) {
warn("FAIL3: bind(\"%s\") len %zd", sun->sun_path,
sizeof(*sun));
fail = 1;
}
sun->sun_path[slen] = 'a';
if (test_bind(sun, slen + 2) != t[i].r) {
warn("FAIL4: bind(\"%.*s\") len %d no-NUL",
(int)(slen + 2), sun->sun_path, slen + 2);
fail = 1;
}
sun->sun_path[slen] = '\0';
if (test_connect(sun, slen + 2, &sun2) != t[i].r) {
warn("FAIL: connect(\"%s\") len %d", sun->sun_path,
slen + 2);
fail = 1;
}
if (test_connect(sun, slen + 3, &sun2) != t[i].r) {
warn("FAIL2: connect(\"%s\") len %d", sun->sun_path,
slen + 3);
fail = 1;
}
if (sizeof(*sun) >= slen + 2 &&
test_connect(sun, sizeof(*sun), &sun2) != t[i].r) {
warn("FAIL3: connect(\"%s\") len %zd", sun->sun_path,
sizeof(*sun));
fail = 1;
}
sun->sun_path[slen] = 'a';
if (test_connect(sun, slen + 2, &sun2) != t[i].r) {
warn("FAIL4: connect(\"%.*s\") len %d no-NUL",
slen + 2, sun->sun_path, slen + 2);
fail = 1;
}
}
return fail;
}
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