[mirror_qemu.git] / tests / tpm-util.c

/*
 * QTest TPM utilities
 *
 * Copyright (c) 2018 IBM Corporation
 * Copyright (c) 2018 Red Hat, Inc.
 *
 * Authors:
 *   Stefan Berger <stefanb@linux.vnet.ibm.com>
 *   Marc-André Lureau <marcandre.lureau@redhat.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "qemu/osdep.h"

#include "hw/acpi/tpm.h"
#include "libqtest.h"
#include "tpm-util.h"
#include "qapi/qmp/qdict.h"

#define TIS_REG(LOCTY, REG) \
    (TPM_TIS_ADDR_BASE + ((LOCTY) << 12) + REG)

void tpm_util_crb_transfer(QTestState *s,
                           const unsigned char *req, size_t req_size,
                           unsigned char *rsp, size_t rsp_size)
{
    uint64_t caddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
    uint64_t raddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);

    qtest_writeb(s, TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);

    qtest_memwrite(s, caddr, req, req_size);

    uint32_t sts, start = 1;
    uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
    qtest_writel(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
    while (true) {
        start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
        if ((start & 1) == 0) {
            break;
        }
        if (g_get_monotonic_time() >= end_time) {
            break;
        }
    };
    start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
    g_assert_cmpint(start & 1, ==, 0);
    sts = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
    g_assert_cmpint(sts & 1, ==, 0);

    qtest_memread(s, raddr, rsp, rsp_size);
}

void tpm_util_tis_transfer(QTestState *s,
                           const unsigned char *req, size_t req_size,
                           unsigned char *rsp, size_t rsp_size)
{
    uint32_t sts;
    uint16_t bcount;
    size_t i;

    /* request use of locality 0 */
    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
    qtest_writel(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);

    sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
    bcount = (sts >> 8) & 0xffff;
    g_assert_cmpint(bcount, >=, req_size);

    /* transmit command */
    for (i = 0; i < req_size; i++) {
        qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO), req[i]);
    }

    /* start processing */
    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);

    uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
    do {
        sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
        if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
            break;
        }
    } while (g_get_monotonic_time() < end_time);

    sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
    bcount = (sts >> 8) & 0xffff;

    memset(rsp, 0, rsp_size);
    for (i = 0; i < bcount; i++) {
        rsp[i] = qtest_readb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO));
    }

    /* relinquish use of locality 0 */
    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS),
                 TPM_TIS_ACCESS_ACTIVE_LOCALITY);
}

void tpm_util_startup(QTestState *s, tx_func *tx)
{
    unsigned char buffer[1024];
    unsigned char tpm_startup[] =
        "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
    unsigned char tpm_startup_resp[] =
        "\x80\x01\x00\x00\x00\x0a\x00\x00\x00\x00";

    tx(s, tpm_startup, sizeof(tpm_startup), buffer, sizeof(buffer));

    g_assert_cmpmem(buffer, sizeof(tpm_startup_resp),
                    tpm_startup_resp, sizeof(tpm_startup_resp));
}

void tpm_util_pcrextend(QTestState *s, tx_func *tx)
{
    unsigned char buffer[1024];
    unsigned char tpm_pcrextend[] =
        "\x80\x02\x00\x00\x00\x41\x00\x00\x01\x82\x00\x00\x00\x0a\x00\x00"
        "\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00"
        "\x0b\x74\x65\x73\x74\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00";

    unsigned char tpm_pcrextend_resp[] =
        "\x80\x02\x00\x00\x00\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x01\x00\x00";

    tx(s, tpm_pcrextend, sizeof(tpm_pcrextend), buffer, sizeof(buffer));

    g_assert_cmpmem(buffer, sizeof(tpm_pcrextend_resp),
                    tpm_pcrextend_resp, sizeof(tpm_pcrextend_resp));
}

void tpm_util_pcrread(QTestState *s, tx_func *tx,
                      const unsigned char *exp_resp, size_t exp_resp_size)
{
    unsigned char buffer[1024];
    unsigned char tpm_pcrread[] =
        "\x80\x01\x00\x00\x00\x14\x00\x00\x01\x7e\x00\x00\x00\x01\x00\x0b"
        "\x03\x00\x04\x00";

    tx(s, tpm_pcrread, sizeof(tpm_pcrread), buffer, sizeof(buffer));

    g_assert_cmpmem(buffer, exp_resp_size, exp_resp, exp_resp_size);
}

static gboolean tpm_util_swtpm_has_tpm2(void)
{
    gint mystdout;
    gboolean succ;
    unsigned i;
    char buffer[10240];
    ssize_t n;
    gchar *swtpm_argv[] = {
        g_strdup("swtpm"), g_strdup("socket"), g_strdup("--help"), NULL
    };

    succ = g_spawn_async_with_pipes(NULL, swtpm_argv, NULL,
                                    G_SPAWN_SEARCH_PATH, NULL, NULL, NULL,
                                    NULL, &mystdout, NULL, NULL);
    if (!succ) {
        goto cleanup;
    }

    n = read(mystdout, buffer, sizeof(buffer) - 1);
    if (n < 0) {
        goto cleanup;
    }
    buffer[n] = 0;
    if (!strstr(buffer, "--tpm2")) {
        succ = false;
    }

 cleanup:
    for (i = 0; swtpm_argv[i]; i++) {
        g_free(swtpm_argv[i]);
    }

    return succ;
}

gboolean tpm_util_swtpm_start(const char *path, GPid *pid,
                              SocketAddress **addr, GError **error)
{
    char *swtpm_argv_tpmstate = g_strdup_printf("dir=%s", path);
    char *swtpm_argv_ctrl = g_strdup_printf("type=unixio,path=%s/sock",
                                            path);
    gchar *swtpm_argv[] = {
        g_strdup("swtpm"), g_strdup("socket"),
        g_strdup("--tpmstate"), swtpm_argv_tpmstate,
        g_strdup("--ctrl"), swtpm_argv_ctrl,
        g_strdup("--tpm2"),
        NULL
    };
    gboolean succ;
    unsigned i;

    succ = tpm_util_swtpm_has_tpm2();
    if (!succ) {
        goto cleanup;
    }

    *addr = g_new0(SocketAddress, 1);
    (*addr)->type = SOCKET_ADDRESS_TYPE_UNIX;
    (*addr)->u.q_unix.path = g_build_filename(path, "sock", NULL);

    succ = g_spawn_async(NULL, swtpm_argv, NULL, G_SPAWN_SEARCH_PATH,
                         NULL, NULL, pid, error);

cleanup:
    for (i = 0; swtpm_argv[i]; i++) {
        g_free(swtpm_argv[i]);
    }

    return succ;
}

void tpm_util_swtpm_kill(GPid pid)
{
    int n;

    if (!pid) {
        return;
    }

    g_spawn_close_pid(pid);

    n = kill(pid, 0);
    if (n < 0) {
        return;
    }

    kill(pid, SIGKILL);
}

void tpm_util_migrate(QTestState *who, const char *uri)
{
    QDict *rsp;

    rsp = qtest_qmp(who,
                    "{ 'execute': 'migrate', 'arguments': { 'uri': %s } }",
                    uri);
    g_assert(qdict_haskey(rsp, "return"));
    qobject_unref(rsp);
}

void tpm_util_wait_for_migration_complete(QTestState *who)
{
    while (true) {
        QDict *rsp_return;
        bool completed;
        const char *status;

        qtest_qmp_send(who, "{ 'execute': 'query-migrate' }");
        rsp_return = qtest_qmp_receive_success(who, NULL, NULL);
        status = qdict_get_str(rsp_return, "status");
        completed = strcmp(status, "completed") == 0;
        g_assert_cmpstr(status, !=,  "failed");
        qobject_unref(rsp_return);
        if (completed) {
            return;
        }
        usleep(1000);
    }
}

void tpm_util_migration_start_qemu(QTestState **src_qemu,
                                   QTestState **dst_qemu,
                                   SocketAddress *src_tpm_addr,
                                   SocketAddress *dst_tpm_addr,
                                   const char *miguri,
                                   const char *ifmodel)
{
    char *src_qemu_args, *dst_qemu_args;

    src_qemu_args = g_strdup_printf(
        "-chardev socket,id=chr,path=%s "
        "-tpmdev emulator,id=dev,chardev=chr "
        "-device %s,tpmdev=dev ",
        src_tpm_addr->u.q_unix.path, ifmodel);

    *src_qemu = qtest_init(src_qemu_args);

    dst_qemu_args = g_strdup_printf(
        "-chardev socket,id=chr,path=%s "
        "-tpmdev emulator,id=dev,chardev=chr "
        "-device %s,tpmdev=dev "
        "-incoming %s",
        dst_tpm_addr->u.q_unix.path,
        ifmodel, miguri);

    *dst_qemu = qtest_init(dst_qemu_args);

    free(src_qemu_args);
    free(dst_qemu_args);
}
Commit	Line	Data
b21373d0 SB	1	/*
	2	* QTest TPM utilities
	3	*
	4	* Copyright (c) 2018 IBM Corporation
	5	* Copyright (c) 2018 Red Hat, Inc.
	6	*
	7	* Authors:
	8	* Stefan Berger <stefanb@linux.vnet.ibm.com>
	9	* Marc-André Lureau <marcandre.lureau@redhat.com>
	10	*
	11	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	12	* See the COPYING file in the top-level directory.
	13	*/
	14
	15	#include "qemu/osdep.h"
	16
	17	#include "hw/acpi/tpm.h"
	18	#include "libqtest.h"
	19	#include "tpm-util.h"
b1e4b7c6 SB	20	#include "qapi/qmp/qdict.h"
b1e4b7c6 SB	21
70663851 SB	22	#define TIS_REG(LOCTY, REG) \
	23	(TPM_TIS_ADDR_BASE + ((LOCTY) << 12) + REG)
	24
b21373d0 SB	25	void tpm_util_crb_transfer(QTestState *s,
	26	const unsigned char *req, size_t req_size,
	27	unsigned char *rsp, size_t rsp_size)
	28	{
	29	uint64_t caddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
	30	uint64_t raddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);
	31
	32	qtest_writeb(s, TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);
	33
	34	qtest_memwrite(s, caddr, req, req_size);
	35
	36	uint32_t sts, start = 1;
	37	uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
	38	qtest_writel(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
	39	while (true) {
	40	start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
	41	if ((start & 1) == 0) {
	42	break;
	43	}
	44	if (g_get_monotonic_time() >= end_time) {
	45	break;
	46	}
	47	};
	48	start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
	49	g_assert_cmpint(start & 1, ==, 0);
	50	sts = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
	51	g_assert_cmpint(sts & 1, ==, 0);
	52
	53	qtest_memread(s, raddr, rsp, rsp_size);
	54	}
	55
70663851 SB	56	void tpm_util_tis_transfer(QTestState *s,
	57	const unsigned char *req, size_t req_size,
	58	unsigned char *rsp, size_t rsp_size)
	59	{
	60	uint32_t sts;
	61	uint16_t bcount;
	62	size_t i;
	63
	64	/* request use of locality 0 */
	65	qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
	66	qtest_writel(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);
	67
	68	sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
	69	bcount = (sts >> 8) & 0xffff;
	70	g_assert_cmpint(bcount, >=, req_size);
	71
	72	/* transmit command */
	73	for (i = 0; i < req_size; i++) {
	74	qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO), req[i]);
	75	}
	76
	77	/* start processing */
	78	qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);
	79
	80	uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
	81	do {
	82	sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
	83	if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
	84	break;
	85	}
	86	} while (g_get_monotonic_time() < end_time);
	87
	88	sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
	89	bcount = (sts >> 8) & 0xffff;
	90
	91	memset(rsp, 0, rsp_size);
	92	for (i = 0; i < bcount; i++) {
	93	rsp[i] = qtest_readb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO));
	94	}
	95
	96	/* relinquish use of locality 0 */
	97	qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS),
	98	TPM_TIS_ACCESS_ACTIVE_LOCALITY);
	99	}
	100
b21373d0 SB	101	void tpm_util_startup(QTestState s, tx_func tx)
	102	{
	103	unsigned char buffer[1024];
	104	unsigned char tpm_startup[] =
	105	"\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
	106	unsigned char tpm_startup_resp[] =
	107	"\x80\x01\x00\x00\x00\x0a\x00\x00\x00\x00";
	108
	109	tx(s, tpm_startup, sizeof(tpm_startup), buffer, sizeof(buffer));
	110
	111	g_assert_cmpmem(buffer, sizeof(tpm_startup_resp),
	112	tpm_startup_resp, sizeof(tpm_startup_resp));
	113	}
	114
	115	void tpm_util_pcrextend(QTestState s, tx_func tx)
	116	{
	117	unsigned char buffer[1024];
	118	unsigned char tpm_pcrextend[] =
	119	"\x80\x02\x00\x00\x00\x41\x00\x00\x01\x82\x00\x00\x00\x0a\x00\x00"
	120	"\x00\x09\x40\x00\x00\x09\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00"
	121	"\x0b\x74\x65\x73\x74\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
	122	"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
	123	"\x00";
	124
	125	unsigned char tpm_pcrextend_resp[] =
	126	"\x80\x02\x00\x00\x00\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
	127	"\x01\x00\x00";
	128
	129	tx(s, tpm_pcrextend, sizeof(tpm_pcrextend), buffer, sizeof(buffer));
	130
	131	g_assert_cmpmem(buffer, sizeof(tpm_pcrextend_resp),
	132	tpm_pcrextend_resp, sizeof(tpm_pcrextend_resp));
	133	}
	134
	135	void tpm_util_pcrread(QTestState s, tx_func tx,
	136	const unsigned char *exp_resp, size_t exp_resp_size)
	137	{
	138	unsigned char buffer[1024];
	139	unsigned char tpm_pcrread[] =
	140	"\x80\x01\x00\x00\x00\x14\x00\x00\x01\x7e\x00\x00\x00\x01\x00\x0b"
	141	"\x03\x00\x04\x00";
	142
	143	tx(s, tpm_pcrread, sizeof(tpm_pcrread), buffer, sizeof(buffer));
	144
	145	g_assert_cmpmem(buffer, exp_resp_size, exp_resp, exp_resp_size);
	146	}
	147
	148	static gboolean tpm_util_swtpm_has_tpm2(void)
	149	{
	150	gint mystdout;
	151	gboolean succ;
	152	unsigned i;
	153	char buffer[10240];
	154	ssize_t n;
	155	gchar *swtpm_argv[] = {
	156	g_strdup("swtpm"), g_strdup("socket"), g_strdup("--help"), NULL
	157	};
	158
	159	succ = g_spawn_async_with_pipes(NULL, swtpm_argv, NULL,
	160	G_SPAWN_SEARCH_PATH, NULL, NULL, NULL,
	161	NULL, &mystdout, NULL, NULL);
	162	if (!succ) {
	163	goto cleanup;
	164	}
165
166	n = read(mystdout, buffer, sizeof(buffer) - 1);
167	if (n < 0) {
168	goto cleanup;
169	}
170	buffer[n] = 0;
171	if (!strstr(buffer, "--tpm2")) {
172	succ = false;
173	}
174
175	cleanup:
176	for (i = 0; swtpm_argv[i]; i++) {
177	g_free(swtpm_argv[i]);
178	}
179
180	return succ;
181	}
182
183	gboolean tpm_util_swtpm_start(const char path, GPid pid,
184	SocketAddress addr, GError error)
185	{
186	char *swtpm_argv_tpmstate = g_strdup_printf("dir=%s", path);
187	char *swtpm_argv_ctrl = g_strdup_printf("type=unixio,path=%s/sock",
188	path);
189	gchar *swtpm_argv[] = {
190	g_strdup("swtpm"), g_strdup("socket"),
191	g_strdup("--tpmstate"), swtpm_argv_tpmstate,
192	g_strdup("--ctrl"), swtpm_argv_ctrl,
193	g_strdup("--tpm2"),
194	NULL
195	};
196	gboolean succ;
197	unsigned i;
198
199	succ = tpm_util_swtpm_has_tpm2();
200	if (!succ) {
201	goto cleanup;
202	}
203
204	*addr = g_new0(SocketAddress, 1);
205	(*addr)->type = SOCKET_ADDRESS_TYPE_UNIX;
206	(*addr)->u.q_unix.path = g_build_filename(path, "sock", NULL);
207
208	succ = g_spawn_async(NULL, swtpm_argv, NULL, G_SPAWN_SEARCH_PATH,
209	NULL, NULL, pid, error);
210
211	cleanup:
212	for (i = 0; swtpm_argv[i]; i++) {
213	g_free(swtpm_argv[i]);
214	}
215
216	return succ;
217	}
218
219	void tpm_util_swtpm_kill(GPid pid)
220	{
221	int n;
222
223	if (!pid) {
224	return;
225	}
226
227	g_spawn_close_pid(pid);
228
229	n = kill(pid, 0);
230	if (n < 0) {
231	return;
232	}
233
234	kill(pid, SIGKILL);
235	}
b1e4b7c6 SB	236
	237	void tpm_util_migrate(QTestState who, const char uri)
	238	{
	239	QDict *rsp;
b1e4b7c6	240
015715f5 MA	241	rsp = qtest_qmp(who,
	242	"{ 'execute': 'migrate', 'arguments': { 'uri': %s } }",
	243	uri);
b1e4b7c6 SB	244	g_assert(qdict_haskey(rsp, "return"));
	245	qobject_unref(rsp);
	246	}
	247
b1e4b7c6 SB	248	void tpm_util_wait_for_migration_complete(QTestState *who)
	249	{
	250	while (true) {
3cd46d42	251	QDict *rsp_return;
b1e4b7c6 SB	252	bool completed;
	253	const char *status;
	254
3cd46d42 MA	255	qtest_qmp_send(who, "{ 'execute': 'query-migrate' }");
3cd46d42 MA	256	rsp_return = qtest_qmp_receive_success(who, NULL, NULL);
b1e4b7c6 SB	257	status = qdict_get_str(rsp_return, "status");
	258	completed = strcmp(status, "completed") == 0;
	259	g_assert_cmpstr(status, !=, "failed");
3cd46d42	260	qobject_unref(rsp_return);
b1e4b7c6 SB	261	if (completed) {
	262	return;
	263	}
	264	usleep(1000);
	265	}
	266	}
	267
	268	void tpm_util_migration_start_qemu(QTestState **src_qemu,
	269	QTestState **dst_qemu,
	270	SocketAddress *src_tpm_addr,
	271	SocketAddress *dst_tpm_addr,
ea71a336 SB	272	const char *miguri,
ea71a336 SB	273	const char *ifmodel)
b1e4b7c6 SB	274	{
	275	char src_qemu_args, dst_qemu_args;
	276
	277	src_qemu_args = g_strdup_printf(
	278	"-chardev socket,id=chr,path=%s "
	279	"-tpmdev emulator,id=dev,chardev=chr "
ea71a336 SB	280	"-device %s,tpmdev=dev ",
ea71a336 SB	281	src_tpm_addr->u.q_unix.path, ifmodel);
b1e4b7c6 SB	282
	283	*src_qemu = qtest_init(src_qemu_args);
	284
	285	dst_qemu_args = g_strdup_printf(
	286	"-chardev socket,id=chr,path=%s "
	287	"-tpmdev emulator,id=dev,chardev=chr "
ea71a336	288	"-device %s,tpmdev=dev "
b1e4b7c6 SB	289	"-incoming %s",
b1e4b7c6 SB	290	dst_tpm_addr->u.q_unix.path,
ea71a336	291	ifmodel, miguri);
b1e4b7c6 SB	292
	293	*dst_qemu = qtest_init(dst_qemu_args);
	294
	295	free(src_qemu_args);
	296	free(dst_qemu_args);
	297	}