trusty: Add trusty unittest control utility

It is designed to connect to user specified port and
implements unittest logging protocol supported by
typical unittest ap running on Trusty side.

Test: manual
Change-Id: I6e37ccee9b9e4dde563ef0e4f531b42091cc2bd8

trusty/utils/trusty-ut-ctrl/Android.bp

@@ -0,0 +1,30 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_test {
+    name: "trusty-ut-ctrl",
+    vendor: true,
+
+    srcs: ["ut-ctrl.c"],
+    shared_libs: [
+        "libc",
+        "liblog",
+        "libtrusty",
+    ],
+    gtest: false,
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+}

trusty/utils/trusty-ut-ctrl/ut-ctrl.c

@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+#include <trusty/tipc.h>
+
+#define TIPC_DEFAULT_DEVNAME "/dev/trusty-ipc-dev0"
+
+static const char* dev_name = NULL;
+static const char* ut_app = NULL;
+
+static const char* _sopts = "hD:";
+static const struct option _lopts[] = {
+        {"help", no_argument, 0, 'h'},
+        {"dev", required_argument, 0, 'D'},
+        {0, 0, 0, 0},
+};
+
+static const char* usage =
+        "Usage: %s [options] unittest-app\n"
+        "\n"
+        "options:\n"
+        "  -h, --help            prints this message and exit\n"
+        "  -D, --dev name        Trusty device name\n"
+        "\n";
+
+static const char* usage_long = "\n";
+
+static bool opt_silent = false;
+
+static void print_usage_and_exit(const char* prog, int code, bool verbose) {
+    fprintf(stderr, usage, prog);
+    if (verbose) {
+        fprintf(stderr, "%s", usage_long);
+    }
+    exit(code);
+}
+
+static void parse_options(int argc, char** argv) {
+    int c;
+    int oidx = 0;
+
+    while (1) {
+        c = getopt_long(argc, argv, _sopts, _lopts, &oidx);
+        if (c == -1) {
+            break; /* done */
+        }
+
+        switch (c) {
+            case 'D':
+                dev_name = strdup(optarg);
+                break;
+
+            case 's':
+                opt_silent = true;
+                break;
+
+            case 'h':
+                print_usage_and_exit(argv[0], EXIT_SUCCESS, true);
+                break;
+
+            default:
+                print_usage_and_exit(argv[0], EXIT_FAILURE, false);
+        }
+    }
+
+    if (optind < argc) {
+        ut_app = strdup(argv[optind]);
+    }
+}
+
+enum test_message_header {
+    TEST_PASSED = 0,
+    TEST_FAILED = 1,
+    TEST_MESSAGE = 2,
+};
+
+static int run_trusty_unitest(const char* utapp) {
+    int fd;
+    int rc;
+    char rx_buf[1024];
+
+    /* connect to unitest app */
+    fd = tipc_connect(dev_name, utapp);
+    if (fd < 0) {
+        fprintf(stderr, "failed to connect to '%s' app: %s\n", utapp, strerror(-fd));
+        return fd;
+    }
+
+    /* wait for test to complete */
+    for (;;) {
+        rc = read(fd, rx_buf, sizeof(rx_buf));
+        if (rc <= 0 || rc >= (int)sizeof(rx_buf)) {
+            fprintf(stderr, "%s: Read failed: %d\n", __func__, rc);
+            tipc_close(fd);
+            return -1;
+        }
+
+        if (rx_buf[0] == TEST_PASSED) {
+            break;
+        } else if (rx_buf[0] == TEST_FAILED) {
+            break;
+        } else if (rx_buf[0] == TEST_MESSAGE) {
+            write(STDOUT_FILENO, rx_buf + 1, rc - 1);
+        } else {
+            fprintf(stderr, "%s: Bad message header: %d\n", __func__, rx_buf[0]);
+            break;
+        }
+    }
+
+    /* close connection to unitest app */
+    tipc_close(fd);
+
+    return rx_buf[0] == TEST_PASSED ? 0 : -1;
+}
+
+int main(int argc, char** argv) {
+    int rc = 0;
+
+    if (argc <= 1) {
+        print_usage_and_exit(argv[0], EXIT_FAILURE, false);
+    }
+
+    parse_options(argc, argv);
+
+    if (!dev_name) {
+        dev_name = TIPC_DEFAULT_DEVNAME;
+    }
+
+    if (!ut_app) {
+        fprintf(stderr, "Unittest app must be specified\n");
+        print_usage_and_exit(argv[0], EXIT_FAILURE, false);
+    }
+
+    rc = run_trusty_unitest(ut_app);
+
+    return rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}