1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <getopt.h>
19 #include <stdio.h>
20 #include <sys/socket.h>
21 #include <sys/types.h>
22 #include <unistd.h>
23
24 #include <cutils/properties.h>
25 #include <cutils/sockets.h>
26
27 static constexpr char VERSION[] = "1.0";
28
show_usage()29 static void show_usage() {
30 fprintf(stderr,
31 "usage: bugreportz [-h | -v]\n"
32 " -h: to display this help message\n"
33 " -v: to display the version\n"
34 " or no arguments to generate a zipped bugreport\n");
35 }
36
show_version()37 static void show_version() {
38 fprintf(stderr, "%s\n", VERSION);
39 }
40
main(int argc,char * argv[])41 int main(int argc, char *argv[]) {
42
43 if (argc > 1) {
44 /* parse arguments */
45 int c;
46 while ((c = getopt(argc, argv, "vh")) != -1) {
47 switch (c) {
48 case 'h':
49 show_usage();
50 return EXIT_SUCCESS;
51 case 'v':
52 show_version();
53 return EXIT_SUCCESS;
54 default:
55 show_usage();
56 return EXIT_FAILURE;
57 }
58 }
59 // passed an argument not starting with -
60 if (optind > 1 || argv[optind] != nullptr) {
61 show_usage();
62 return EXIT_FAILURE;
63 }
64 }
65
66 // TODO: code below was copy-and-pasted from bugreport.cpp (except by the timeout value);
67 // should be reused instead.
68
69 // Start the dumpstatez service.
70 property_set("ctl.start", "dumpstatez");
71
72 // Socket will not be available until service starts.
73 int s;
74 for (int i = 0; i < 20; i++) {
75 s = socket_local_client("dumpstate", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
76 if (s >= 0)
77 break;
78 // Try again in 1 second.
79 sleep(1);
80 }
81
82 if (s == -1) {
83 printf("FAIL:Failed to connect to dumpstatez service: %s\n", strerror(errno));
84 return EXIT_SUCCESS;
85 }
86
87 // Set a timeout so that if nothing is read in 10 minutes, we'll stop
88 // reading and quit. No timeout in dumpstate is longer than 60 seconds,
89 // so this gives lots of leeway in case of unforeseen time outs.
90 struct timeval tv;
91 tv.tv_sec = 10 * 60;
92 tv.tv_usec = 0;
93 if (setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
94 fprintf(stderr, "WARNING: Cannot set socket timeout: %s\n", strerror(errno));
95 }
96
97 while (1) {
98 char buffer[65536];
99 ssize_t bytes_read = TEMP_FAILURE_RETRY(
100 read(s, buffer, sizeof(buffer)));
101 if (bytes_read == 0) {
102 break;
103 } else if (bytes_read == -1) {
104 // EAGAIN really means time out, so change the errno.
105 if (errno == EAGAIN) {
106 errno = ETIMEDOUT;
107 }
108 printf("FAIL:Bugreport read terminated abnormally (%s)\n", strerror(errno));
109 break;
110 }
111
112 ssize_t bytes_to_send = bytes_read;
113 ssize_t bytes_written;
114 do {
115 bytes_written = TEMP_FAILURE_RETRY(
116 write(STDOUT_FILENO, buffer + bytes_read - bytes_to_send,
117 bytes_to_send));
118 if (bytes_written == -1) {
119 fprintf(stderr,
120 "Failed to write data to stdout: read %zd, trying to send %zd (%s)\n",
121 bytes_read, bytes_to_send, strerror(errno));
122 break;
123 }
124 bytes_to_send -= bytes_written;
125 } while (bytes_written != 0 && bytes_to_send > 0);
126 }
127
128 if (close(s) == -1) {
129 fprintf(stderr, "WARNING: error closing socket: %s\n", strerror(errno));
130 }
131 return EXIT_SUCCESS;
132 }
133