cmds/bugreportz/main.cpp

/*
 * Copyright (C) 2016 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 <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>

#include <cutils/properties.h>
#include <cutils/sockets.h>

#include "bugreportz.h"

static constexpr char VERSION[] = "1.2";

static void show_usage() {
    fprintf(stderr,
            "usage: bugreportz [-hpsv]\n"
            "  -h: to display this help message\n"
            "  -p: display progress\n"
            "  -s: stream content to standard output\n"
            "  -v: to display the version\n"
            "  or no arguments to generate a zipped bugreport\n");
}

static void show_version() {
    fprintf(stderr, "%s\n", VERSION);
}

int main(int argc, char* argv[]) {
    bool show_progress = false;
    bool stream_data = false;
    if (argc > 1) {
        /* parse arguments */
        int c;
        while ((c = getopt(argc, argv, "hpsv")) != -1) {
            switch (c) {
                case 'h':
                    show_usage();
                    return EXIT_SUCCESS;
                case 'p':
                    show_progress = true;
                    break;
                case 's':
                    stream_data = true;
                    break;
                case 'v':
                    show_version();
                    return EXIT_SUCCESS;
                default:
                    show_usage();
                    return EXIT_FAILURE;
            }
        }
    }

    // We don't support any non-option arguments.
    if (optind != argc) {
        show_usage();
        return EXIT_FAILURE;
    }

    // Wait a little while for dumpstatez to stop if it is running
    bool dumpstate_running = false;
    for (int i = 0; i < 20; i++) {
        char buf[PROPERTY_VALUE_MAX];
        property_get("init.svc.dumpstatez", buf, "");
        dumpstate_running = strcmp(buf, "running") == 0;

        if (!dumpstate_running) break;

        sleep(1);
    }

    if (dumpstate_running) {
        fprintf(stderr, "FAIL:dumpstatez service is already running\n");
        return EXIT_FAILURE;
    }

    // TODO: code below was copy-and-pasted from bugreport.cpp (except by the
    // timeout value);
    // should be reused instead.

    // Start the dumpstatez service.
    if (stream_data) {
        property_set("ctl.start", "dumpstate");
    } else {
        property_set("ctl.start", "dumpstatez");
    }

    // Socket will not be available until service starts.
    int s = -1;
    for (int i = 0; i < 20; i++) {
        s = socket_local_client("dumpstate", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
        if (s >= 0) break;
        // Try again in 1 second.
        sleep(1);
    }

    if (s == -1) {
        printf("FAIL:Failed to connect to dumpstatez service: %s\n", strerror(errno));
        return EXIT_FAILURE;
    }

    // Set a timeout so that if nothing is read in 10 minutes, we'll stop
    // reading and quit. No timeout in dumpstate is longer than 60 seconds,
    // so this gives lots of leeway in case of unforeseen time outs.
    struct timeval tv;
    tv.tv_sec = 10 * 60;
    tv.tv_usec = 0;
    if (setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
        fprintf(stderr,
                "WARNING: Cannot set socket timeout, bugreportz might hang indefinitely: %s\n",
                strerror(errno));
    }

    int ret;
    if (stream_data) {
        ret = bugreportz_stream(s);
    } else {
        ret = bugreportz(s, show_progress);
    }

    if (close(s) == -1) {
        fprintf(stderr, "WARNING: error closing socket: %s\n", strerror(errno));
        ret = EXIT_FAILURE;
    }
    return ret;
}