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 "bugreportz.h"
18
19 #include <android-base/file.h>
20 #include <android-base/strings.h>
21 #include <errno.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26
27 #include <string>
28
29 static constexpr char BEGIN_PREFIX[] = "BEGIN:";
30 static constexpr char PROGRESS_PREFIX[] = "PROGRESS:";
31
write_line(const std::string & line,bool show_progress)32 static void write_line(const std::string& line, bool show_progress) {
33 if (line.empty()) return;
34
35 // When not invoked with the -p option, it must skip BEGIN and PROGRESS lines otherwise it
36 // will break adb (which is expecting either OK or FAIL).
37 if (!show_progress && (android::base::StartsWith(line, PROGRESS_PREFIX) ||
38 android::base::StartsWith(line, BEGIN_PREFIX)))
39 return;
40
41 android::base::WriteStringToFd(line, STDOUT_FILENO);
42 }
43
bugreportz(int s,bool show_progress)44 int bugreportz(int s, bool show_progress) {
45 std::string line;
46 while (1) {
47 char buffer[65536];
48 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)));
49 if (bytes_read == 0) {
50 break;
51 } else if (bytes_read == -1) {
52 // EAGAIN really means time out, so change the errno.
53 if (errno == EAGAIN) {
54 errno = ETIMEDOUT;
55 }
56 printf("FAIL:Bugreport read terminated abnormally (%s)\n", strerror(errno));
57 return EXIT_FAILURE;
58 }
59
60 // Writes line by line.
61 for (int i = 0; i < bytes_read; i++) {
62 char c = buffer[i];
63 line.append(1, c);
64 if (c == '\n') {
65 write_line(line, show_progress);
66 line.clear();
67 }
68 }
69 }
70 // Process final line, in case it didn't finish with newline
71 write_line(line, show_progress);
72 return EXIT_SUCCESS;
73 }
74
bugreportz_stream(int s)75 int bugreportz_stream(int s) {
76 while (1) {
77 char buffer[65536];
78 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)));
79 if (bytes_read == 0) {
80 break;
81 } else if (bytes_read == -1) {
82 // EAGAIN really means time out, so change the errno.
83 if (errno == EAGAIN) {
84 errno = ETIMEDOUT;
85 }
86 printf("FAIL:Bugreport read terminated abnormally (%s)\n", strerror(errno));
87 return EXIT_FAILURE;
88 }
89
90 if (!android::base::WriteFully(android::base::borrowed_fd(STDOUT_FILENO), buffer,
91 bytes_read)) {
92 printf("Failed to write data to stdout: trying to send %zd bytes (%s)\n", bytes_read,
93 strerror(errno));
94 return EXIT_FAILURE;
95 }
96 }
97 return EXIT_SUCCESS;
98 }
99