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