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selftests: nci: Add the NCI testcase reading T4T Tag
authorBongsu Jeon <bongsu.jeon@samsung.com>
Tue, 17 Aug 2021 13:28:18 +0000 (06:28 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 18 Aug 2021 09:17:57 +0000 (10:17 +0100)
Add the NCI testcase reading T4T Tag that has NFC TEST in plain text.
the virtual device application acts as T4T Tag in this testcase.

Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tools/testing/selftests/nci/nci_dev.c

index a68b146..e1bf55d 100644 (file)
@@ -57,6 +57,29 @@ const __u8 nci_init_rsp_v2[] = {0x40, 0x01, 0x1c, 0x00, 0x1a, 0x7e, 0x06,
 const __u8 nci_rf_disc_map_rsp[] = {0x41, 0x00, 0x01, 0x00};
 const __u8 nci_rf_disc_rsp[] = {0x41, 0x03, 0x01, 0x00};
 const __u8 nci_rf_deact_rsp[] = {0x41, 0x06, 0x01, 0x00};
+const __u8 nci_rf_deact_ntf[] = {0x61, 0x06, 0x02, 0x00, 0x00};
+const __u8 nci_rf_activate_ntf[] = {0x61, 0x05, 0x1D, 0x01, 0x02, 0x04, 0x00,
+                                    0xFF, 0xFF, 0x0C, 0x44, 0x03, 0x07, 0x04,
+                                    0x62, 0x26, 0x11, 0x80, 0x1D, 0x80, 0x01,
+                                    0x20, 0x00, 0x00, 0x00, 0x06, 0x05, 0x75,
+                                    0x77, 0x81, 0x02, 0x80};
+const __u8 nci_t4t_select_cmd[] = {0x00, 0x00, 0x0C, 0x00, 0xA4, 0x04, 0x00,
+                                   0x07, 0xD2, 0x76, 0x00, 0x00, 0x85, 0x01, 0x01};
+const __u8 nci_t4t_select_cmd2[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+                                    0xE1, 0x03};
+const __u8 nci_t4t_select_cmd3[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+                                    0xE1, 0x04};
+const __u8 nci_t4t_read_cmd[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x0F};
+const __u8 nci_t4t_read_rsp[] = {0x00, 0x00, 0x11, 0x00, 0x0F, 0x20, 0x00, 0x3B,
+                                 0x00, 0x34, 0x04, 0x06, 0xE1, 0x04, 0x08, 0x00,
+                                 0x00, 0x00, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd2[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x02};
+const __u8 nci_t4t_read_rsp2[] = {0x00, 0x00, 0x04, 0x00, 0x0F, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd3[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x02, 0x0F};
+const __u8 nci_t4t_read_rsp3[] = {0x00, 0x00, 0x11, 0xD1, 0x01, 0x0B, 0x54, 0x02,
+                                  0x65, 0x6E, 0x4E, 0x46, 0x43, 0x20, 0x54, 0x45,
+                                  0x53, 0x54, 0x90, 0x00};
+const __u8 nci_t4t_rsp_ok[] = {0x00, 0x00, 0x02, 0x90, 0x00};
 
 struct msgtemplate {
        struct nlmsghdr n;
@@ -150,7 +173,7 @@ static int send_get_nfc_family(int sd, __u32 pid)
                                &nla_get_family_len, NLM_F_REQUEST);
 }
 
-static int get_family_id(int sd, __u32 pid)
+static int get_family_id(int sd, __u32 pid, __u32 *event_group)
 {
        struct {
                struct nlmsghdr n;
@@ -160,6 +183,7 @@ static int get_family_id(int sd, __u32 pid)
        struct nlattr *na;
        int resp_len;
        __u16 id;
+       int len;
        int rc;
 
        rc = send_get_nfc_family(sd, pid);
@@ -173,11 +197,43 @@ static int get_family_id(int sd, __u32 pid)
            !NLMSG_OK(&ans.n, resp_len))
                return 0;
 
+       len = 0;
+       resp_len = GENLMSG_PAYLOAD(&ans.n);
        na = (struct nlattr *)GENLMSG_DATA(&ans);
-       na = (struct nlattr *)((char *)na + NLA_ALIGN(na->nla_len));
-       if (na->nla_type == CTRL_ATTR_FAMILY_ID)
-               id = *(__u16 *)NLA_DATA(na);
 
+       while (len < resp_len) {
+               len += NLA_ALIGN(na->nla_len);
+               if (na->nla_type == CTRL_ATTR_FAMILY_ID) {
+                       id = *(__u16 *)NLA_DATA(na);
+               } else if (na->nla_type == CTRL_ATTR_MCAST_GROUPS) {
+                       struct nlattr *nested_na;
+                       struct nlattr *group_na;
+                       int group_attr_len;
+                       int group_attr;
+
+                       nested_na = (struct nlattr *)((char *)na + NLA_HDRLEN);
+                       group_na = (struct nlattr *)((char *)nested_na + NLA_HDRLEN);
+                       group_attr_len = 0;
+
+                       for (group_attr = CTRL_ATTR_MCAST_GRP_UNSPEC;
+                               group_attr < CTRL_ATTR_MCAST_GRP_MAX; group_attr++) {
+                               if (group_na->nla_type == CTRL_ATTR_MCAST_GRP_ID) {
+                                       *event_group = *(__u32 *)((char *)group_na +
+                                                                 NLA_HDRLEN);
+                                       break;
+                               }
+
+                               group_attr_len += NLA_ALIGN(group_na->nla_len) +
+                                                 NLA_HDRLEN;
+                               if (group_attr_len >= nested_na->nla_len)
+                                       break;
+
+                               group_na = (struct nlattr *)((char *)group_na +
+                                                            NLA_ALIGN(group_na->nla_len));
+                       }
+               }
+               na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+       }
        return id;
 }
 
@@ -347,6 +403,7 @@ FIXTURE_SETUP(NCI)
 {
        struct msgtemplate msg;
        pthread_t thread_t;
+       __u32 event_group;
        int status;
        int rc;
 
@@ -358,12 +415,16 @@ FIXTURE_SETUP(NCI)
        ASSERT_NE(self->sd, -1);
 
        self->pid = getpid();
-       self->fid = get_family_id(self->sd, self->pid);
+       self->fid = get_family_id(self->sd, self->pid, &event_group);
        ASSERT_NE(self->fid, -1);
 
        self->virtual_nci_fd = open("/dev/virtual_nci", O_RDWR);
        ASSERT_GT(self->virtual_nci_fd, -1);
 
+       rc = setsockopt(self->sd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &event_group,
+                       sizeof(event_group));
+       ASSERT_NE(rc, -1);
+
        rc = ioctl(self->virtual_nci_fd, IOCTL_GET_NCIDEV_IDX, &self->dev_idex);
        ASSERT_EQ(rc, 0);
 
@@ -574,6 +635,227 @@ TEST_F(NCI, start_poll)
        EXPECT_EQ(status, 0);
 }
 
+int get_taginfo(int dev_idx, int sd, int fid, int pid)
+{
+       struct {
+               struct nlmsghdr n;
+               struct genlmsghdr g;
+               char buf[512];
+       } ans;
+
+       struct nlattr *na;
+       __u32 protocol;
+       int targetidx;
+       __u8 sel_res;
+       int resp_len;
+       int len;
+
+       __u16 tagid_type;
+       void *tagid_type_data;
+       int tagid_len;
+
+       tagid_type = NFC_ATTR_DEVICE_INDEX;
+       tagid_type_data = &dev_idx;
+       tagid_len = 4;
+
+       send_cmd_mt_nla(sd, fid, pid, NFC_CMD_GET_TARGET, 1, &tagid_type,
+                       &tagid_type_data, &tagid_len, NLM_F_REQUEST | NLM_F_DUMP);
+       resp_len = recv(sd, &ans, sizeof(ans), 0);
+       if (ans.n.nlmsg_type == NLMSG_ERROR || resp_len < 0 ||
+           !NLMSG_OK(&ans.n, resp_len))
+               return -1;
+
+       resp_len = GENLMSG_PAYLOAD(&ans.n);
+       na = (struct nlattr *)GENLMSG_DATA(&ans);
+
+       len = 0;
+       targetidx = -1;
+       protocol = -1;
+       sel_res = -1;
+
+       while (len < resp_len) {
+               len += NLA_ALIGN(na->nla_len);
+
+               if (na->nla_type == NFC_ATTR_TARGET_INDEX)
+                       targetidx = *(int *)((char *)na + NLA_HDRLEN);
+               else if (na->nla_type == NFC_ATTR_TARGET_SEL_RES)
+                       sel_res = *(__u8 *)((char *)na + NLA_HDRLEN);
+               else if (na->nla_type == NFC_ATTR_PROTOCOLS)
+                       protocol = *(__u32 *)((char *)na + NLA_HDRLEN);
+
+               na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+       }
+
+       if (targetidx == -1 || sel_res != 0x20 || protocol != NFC_PROTO_ISO14443_MASK)
+               return -1;
+
+       return targetidx;
+}
+
+int connect_socket(int dev_idx, int target_idx)
+{
+       struct sockaddr_nfc addr;
+       int sock;
+       int err = 0;
+
+       sock = socket(AF_NFC, SOCK_SEQPACKET, NFC_SOCKPROTO_RAW);
+       if (sock == -1)
+               return -1;
+
+       addr.sa_family = AF_NFC;
+       addr.dev_idx = dev_idx;
+       addr.target_idx = target_idx;
+       addr.nfc_protocol = NFC_PROTO_ISO14443;
+
+       err = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
+       if (err) {
+               close(sock);
+               return -1;
+       }
+
+       return sock;
+}
+
+int connect_tag(int dev_idx, int virtual_fd, int sd, int fid, int pid)
+{
+       struct genlmsghdr *genlhdr;
+       struct nlattr *na;
+       char evt_data[255];
+       int target_idx;
+       int resp_len;
+       int evt_dev;
+
+       write(virtual_fd, nci_rf_activate_ntf, sizeof(nci_rf_activate_ntf));
+       resp_len = recv(sd, evt_data, sizeof(evt_data), 0);
+       if (resp_len < 0)
+               return -1;
+
+       genlhdr = (struct genlmsghdr *)((struct nlmsghdr *)evt_data + 1);
+       na = (struct nlattr *)(genlhdr + 1);
+       evt_dev = *(int *)((char *)na + NLA_HDRLEN);
+       if (dev_idx != evt_dev)
+               return -1;
+
+       target_idx = get_taginfo(dev_idx, sd, fid, pid);
+       if (target_idx == -1)
+               return -1;
+       return connect_socket(dev_idx, target_idx);
+}
+
+int read_write_nci_cmd(int nfc_sock, int virtual_fd, const __u8 *cmd, __u32 cmd_len,
+                      const __u8 *rsp, __u32 rsp_len)
+{
+       char buf[256];
+       unsigned int len;
+
+       send(nfc_sock, &cmd[3], cmd_len - 3, 0);
+       len = read(virtual_fd, buf, cmd_len);
+       if (len < 0 || memcmp(buf, cmd, cmd_len))
+               return -1;
+
+       write(virtual_fd, rsp, rsp_len);
+       len = recv(nfc_sock, buf, rsp_len - 2, 0);
+       if (len < 0 || memcmp(&buf[1], &rsp[3], rsp_len - 3))
+               return -1;
+
+       return 0;
+}
+
+int read_tag(int nfc_sock, int virtual_fd)
+{
+       if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd,
+                              sizeof(nci_t4t_select_cmd), nci_t4t_rsp_ok,
+                              sizeof(nci_t4t_rsp_ok)))
+               return -1;
+
+       if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd2,
+                              sizeof(nci_t4t_select_cmd2), nci_t4t_rsp_ok,
+                              sizeof(nci_t4t_rsp_ok)))
+               return -1;
+
+       if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd,
+                              sizeof(nci_t4t_read_cmd), nci_t4t_read_rsp,
+                              sizeof(nci_t4t_read_rsp)))
+               return -1;
+
+       if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd3,
+                              sizeof(nci_t4t_select_cmd3), nci_t4t_rsp_ok,
+                              sizeof(nci_t4t_rsp_ok)))
+               return -1;
+
+       if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd2,
+                              sizeof(nci_t4t_read_cmd2), nci_t4t_read_rsp2,
+                              sizeof(nci_t4t_read_rsp2)))
+               return -1;
+
+       return read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd3,
+                                 sizeof(nci_t4t_read_cmd3), nci_t4t_read_rsp3,
+                                 sizeof(nci_t4t_read_rsp3));
+}
+
+static void *virtual_deactivate_proc(void *data)
+{
+       int virtual_fd;
+       char buf[256];
+       int deactcmd_len;
+       int len;
+
+       virtual_fd = *(int *)data;
+       deactcmd_len = sizeof(nci_rf_deact_cmd);
+       len = read(virtual_fd, buf, deactcmd_len);
+       if (len != deactcmd_len || memcmp(buf, nci_rf_deact_cmd, deactcmd_len))
+               return (void *)-1;
+
+       write(virtual_fd, nci_rf_deact_rsp, sizeof(nci_rf_deact_rsp));
+       write(virtual_fd, nci_rf_deact_ntf, sizeof(nci_rf_deact_ntf));
+
+       return (void *)0;
+}
+
+int disconnect_tag(int nfc_sock, int virtual_fd)
+{
+       pthread_t thread_t;
+       char buf[256];
+       int status;
+       int len;
+
+       send(nfc_sock, &nci_t4t_select_cmd3[3], sizeof(nci_t4t_select_cmd3) - 3, 0);
+       len = read(virtual_fd, buf, sizeof(nci_t4t_select_cmd3));
+       if (len < 0 || memcmp(buf, nci_t4t_select_cmd3, sizeof(nci_t4t_select_cmd3)))
+               return -1;
+
+       len = recv(nfc_sock, buf, sizeof(nci_t4t_rsp_ok), 0);
+       if (len != -1)
+               return -1;
+
+       status = pthread_create(&thread_t, NULL, virtual_deactivate_proc,
+                               (void *)&virtual_fd);
+
+       close(nfc_sock);
+       pthread_join(thread_t, (void **)&status);
+       return status;
+}
+
+TEST_F(NCI, t4t_tag_read)
+{
+       int nfc_sock;
+       int status;
+
+       status = start_polling(self->dev_idex, self->proto, self->virtual_nci_fd,
+                              self->sd, self->fid, self->pid);
+       EXPECT_EQ(status, 0);
+
+       nfc_sock = connect_tag(self->dev_idex, self->virtual_nci_fd, self->sd,
+                              self->fid, self->pid);
+       ASSERT_GT(nfc_sock, -1);
+
+       status = read_tag(nfc_sock, self->virtual_nci_fd);
+       ASSERT_EQ(status, 0);
+
+       status = disconnect_tag(nfc_sock, self->virtual_nci_fd);
+       EXPECT_EQ(status, 0);
+}
+
 TEST_F(NCI, deinit)
 {
        struct msgtemplate msg;