| File: | wsutil/ws_pipe.c |
| Warning: | line 641, column 18 Potential leak of memory pointed to by 'argv' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* ws_pipe.c | |||
| 2 | * | |||
| 3 | * Routines for handling pipes. | |||
| 4 | * | |||
| 5 | * Wireshark - Network traffic analyzer | |||
| 6 | * By Gerald Combs <gerald@wireshark.org> | |||
| 7 | * Copyright 1998 Gerald Combs | |||
| 8 | * | |||
| 9 | * SPDX-License-Identifier: GPL-2.0-or-later | |||
| 10 | */ | |||
| 11 | ||||
| 12 | #include <config.h> | |||
| 13 | #define WS_LOG_DOMAIN"Capture" LOG_DOMAIN_CAPTURE"Capture" | |||
| 14 | #include "wsutil/ws_pipe.h" | |||
| 15 | ||||
| 16 | #include <stdio.h> | |||
| 17 | #include <stdlib.h> | |||
| 18 | #include <string.h> | |||
| 19 | ||||
| 20 | #ifdef _WIN32 | |||
| 21 | #include <windows.h> | |||
| 22 | #include <io.h> | |||
| 23 | #include <fcntl.h> /* for _O_BINARY */ | |||
| 24 | #include <wsutil/win32-utils.h> | |||
| 25 | #else | |||
| 26 | #include <unistd.h> | |||
| 27 | #ifdef HAVE_SYS_SELECT_H | |||
| 28 | #include <sys/select.h> | |||
| 29 | #endif | |||
| 30 | #endif | |||
| 31 | ||||
| 32 | #if !GLIB_CHECK_VERSION(2, 58, 2)(2 > (2) || (2 == (2) && 80 > (58)) || (2 == (2 ) && 80 == (58) && 0 >= (2))) | |||
| 33 | #ifdef __linux__1 | |||
| 34 | #define HAS_G_SPAWN_LINUX_THREAD_SAFETY_BUG | |||
| 35 | #include <fcntl.h> | |||
| 36 | #include <sys/syscall.h> /* for syscall and SYS_getdents64 */ | |||
| 37 | #include <wsutil/file_util.h> /* for ws_open -> open to pacify checkAPIs.pl */ | |||
| 38 | #endif | |||
| 39 | #endif | |||
| 40 | ||||
| 41 | #include "wsutil/filesystem.h" | |||
| 42 | #include "wsutil/wslog.h" | |||
| 43 | ||||
| 44 | #ifdef HAS_G_SPAWN_LINUX_THREAD_SAFETY_BUG | |||
| 45 | struct linux_dirent64 { | |||
| 46 | uint64_t d_ino; /* 64-bit inode number */ | |||
| 47 | uint64_t d_off; /* 64-bit offset to next structure */ | |||
| 48 | unsigned short d_reclen; /* Size of this dirent */ | |||
| 49 | unsigned char d_type; /* File type */ | |||
| 50 | char d_name[]; /* Filename (null-terminated) */ | |||
| 51 | }; | |||
| 52 | ||||
| 53 | /* Async-signal-safe string to integer conversion. */ | |||
| 54 | static int | |||
| 55 | filename_to_fd(const char *p) | |||
| 56 | { | |||
| 57 | char c; | |||
| 58 | int fd = 0; | |||
| 59 | const int cutoff = INT_MAX2147483647 / 10; | |||
| 60 | const int cutlim = INT_MAX2147483647 % 10; | |||
| 61 | ||||
| 62 | if (*p == '\0') | |||
| 63 | return -1; | |||
| 64 | ||||
| 65 | while ((c = *p++) != '\0') { | |||
| 66 | if (!g_ascii_isdigit(c)((g_ascii_table[(guchar) (c)] & G_ASCII_DIGIT) != 0)) | |||
| 67 | return -1; | |||
| 68 | c -= '0'; | |||
| 69 | ||||
| 70 | /* Check for overflow. */ | |||
| 71 | if (fd > cutoff || (fd == cutoff && c > cutlim)) | |||
| 72 | return -1; | |||
| 73 | ||||
| 74 | fd = fd * 10 + c; | |||
| 75 | } | |||
| 76 | ||||
| 77 | return fd; | |||
| 78 | } | |||
| 79 | ||||
| 80 | static void | |||
| 81 | close_non_standard_fds_linux(void * user_data _U___attribute__((unused))) | |||
| 82 | { | |||
| 83 | /* | |||
| 84 | * GLib 2.14.2 and newer (up to at least GLib 2.58.1) on Linux with multiple | |||
| 85 | * threads can deadlock in the child process due to use of opendir (which | |||
| 86 | * is not async-signal-safe). To avoid this, disable the broken code path | |||
| 87 | * and manually close file descriptors using async-signal-safe code only. | |||
| 88 | * Use CLOEXEC to allow reporting of execve errors to the parent via a pipe. | |||
| 89 | * https://gitlab.gnome.org/GNOME/glib/issues/1014 | |||
| 90 | * https://gitlab.gnome.org/GNOME/glib/merge_requests/490 | |||
| 91 | */ | |||
| 92 | int dir_fd = ws_open("/proc/self/fd", O_RDONLY | O_DIRECTORY); | |||
| 93 | if (dir_fd >= 0) { | |||
| 94 | char buf[4096]; | |||
| 95 | int nread, fd; | |||
| 96 | struct linux_dirent64 *de; | |||
| 97 | ||||
| 98 | while ((nread = (int) syscall(SYS_getdents64, dir_fd, buf, sizeof(buf))) > 0) { | |||
| 99 | for (int pos = 0; pos < nread; pos += de->d_reclen) { | |||
| 100 | de = (struct linux_dirent64 *)(buf + pos); | |||
| 101 | fd = filename_to_fd(de->d_name); | |||
| 102 | if (fd > STDERR_FILENO2 && fd != dir_fd) { | |||
| 103 | /* Close all other (valid) file descriptors above stderr. */ | |||
| 104 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |||
| 105 | } | |||
| 106 | } | |||
| 107 | } | |||
| 108 | ||||
| 109 | close(dir_fd); | |||
| 110 | } else { | |||
| 111 | /* Slow fallback in case /proc is not mounted */ | |||
| 112 | for (int fd = STDERR_FILENO2 + 1; fd < getdtablesize(); fd++) { | |||
| 113 | fcntl(fd, F_SETFD, FD_CLOEXEC); | |||
| 114 | } | |||
| 115 | } | |||
| 116 | } | |||
| 117 | #endif | |||
| 118 | ||||
| 119 | #ifdef _WIN32 | |||
| 120 | static ULONG pipe_serial_number; | |||
| 121 | ||||
| 122 | /* Alternative for CreatePipe() where read handle is opened with FILE_FLAG_OVERLAPPED */ | |||
| 123 | static bool_Bool | |||
| 124 | ws_pipe_create_overlapped_read(HANDLE *read_pipe_handle, HANDLE *write_pipe_handle, | |||
| 125 | SECURITY_ATTRIBUTES *sa, DWORD suggested_buffer_size) | |||
| 126 | { | |||
| 127 | HANDLE read_pipe, write_pipe; | |||
| 128 | unsigned char *name = ws_strdup_printf("\\\\.\\Pipe\\WiresharkWsPipe.%08lx.%08lx",wmem_strdup_printf(((void*)0), "\\\\.\\Pipe\\WiresharkWsPipe.%08lx.%08lx" , GetCurrentProcessId(), InterlockedIncrement(&pipe_serial_number )) | |||
| 129 | GetCurrentProcessId(),wmem_strdup_printf(((void*)0), "\\\\.\\Pipe\\WiresharkWsPipe.%08lx.%08lx" , GetCurrentProcessId(), InterlockedIncrement(&pipe_serial_number )) | |||
| 130 | InterlockedIncrement(&pipe_serial_number))wmem_strdup_printf(((void*)0), "\\\\.\\Pipe\\WiresharkWsPipe.%08lx.%08lx" , GetCurrentProcessId(), InterlockedIncrement(&pipe_serial_number )); | |||
| 131 | gunichar2 *wname = g_utf8_to_utf16(name, -1, NULL((void*)0), NULL((void*)0), NULL((void*)0)); | |||
| 132 | ||||
| 133 | g_free(name); | |||
| 134 | ||||
| 135 | read_pipe = CreateNamedPipe(wname, PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED, | |||
| 136 | PIPE_TYPE_BYTE | PIPE_WAIT, 1, | |||
| 137 | suggested_buffer_size, suggested_buffer_size, | |||
| 138 | 0, sa); | |||
| 139 | if (INVALID_HANDLE_VALUE == read_pipe) | |||
| 140 | { | |||
| 141 | g_free(wname); | |||
| 142 | return false0; | |||
| 143 | } | |||
| 144 | ||||
| 145 | write_pipe = CreateFile(wname, GENERIC_WRITE, 0, sa, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL((void*)0)); | |||
| 146 | if (INVALID_HANDLE_VALUE == write_pipe) | |||
| 147 | { | |||
| 148 | DWORD error = GetLastError(); | |||
| 149 | CloseHandle(read_pipe); | |||
| 150 | SetLastError(error); | |||
| 151 | g_free(wname); | |||
| 152 | return false0; | |||
| 153 | } | |||
| 154 | ||||
| 155 | *read_pipe_handle = read_pipe; | |||
| 156 | *write_pipe_handle = write_pipe; | |||
| 157 | g_free(wname); | |||
| 158 | return true1; | |||
| 159 | } | |||
| 160 | #endif | |||
| 161 | ||||
| 162 | /** | |||
| 163 | * Helper to convert a command and argument list to an NULL-terminated 'argv' | |||
| 164 | * array, suitable for g_spawn_sync and friends. Free with g_strfreev. | |||
| 165 | */ | |||
| 166 | static char ** | |||
| 167 | convert_to_argv(const char *command, int args_count, char *const *args) | |||
| 168 | { | |||
| 169 | char **argv = g_new(char *, args_count + 2)((char * *) g_malloc_n ((args_count + 2), sizeof (char *))); | |||
| 170 | // The caller does not seem to modify this, but g_spawn_sync uses 'char **' | |||
| 171 | // as opposed to 'const char **', so just to be sure clone it. | |||
| 172 | argv[0] = g_strdup(command)g_strdup_inline (command); | |||
| 173 | for (int i = 0; i < args_count; i++) { | |||
| 174 | // Empty arguments may indicate a bug in Wireshark. Extcap for example | |||
| 175 | // omits arguments when their string value is empty. On Windows, empty | |||
| 176 | // arguments would silently be ignored because protect_arg returns an | |||
| 177 | // empty string, therefore we print a warning here. | |||
| 178 | if (!*args[i]) { | |||
| 179 | ws_warning("Empty argument %d in arguments list", i)do { if (1) { ws_log_full("Capture", LOG_LEVEL_WARNING, "wsutil/ws_pipe.c" , 179, __func__, "Empty argument %d in arguments list", i); } } while (0); | |||
| 180 | } | |||
| 181 | argv[1 + i] = g_strdup(args[i])g_strdup_inline (args[i]); | |||
| 182 | } | |||
| 183 | argv[args_count + 1] = NULL((void*)0); | |||
| 184 | return argv; | |||
| 185 | } | |||
| 186 | ||||
| 187 | /** | |||
| 188 | * Convert a non-empty NULL-terminated array of command and arguments to a | |||
| 189 | * string for displaying purposes. On Windows, the returned string is properly | |||
| 190 | * escaped and can be executed directly. | |||
| 191 | */ | |||
| 192 | static char * | |||
| 193 | convert_to_command_line(char **argv) | |||
| 194 | { | |||
| 195 | GString *command_line = g_string_sized_new(200); | |||
| 196 | #ifdef _WIN32 | |||
| 197 | // The first argument must always be quoted even if it does not contain | |||
| 198 | // special characters or else CreateProcess might consider arguments as part | |||
| 199 | // of the executable. | |||
| 200 | char *quoted_arg = protect_arg(argv[0]); | |||
| 201 | if (quoted_arg[0] != '"') { | |||
| 202 | g_string_append_c(command_line, '"')g_string_append_c_inline (command_line, '"'); | |||
| 203 | g_string_append(command_line, quoted_arg)(__builtin_constant_p (quoted_arg) ? __extension__ ({ const char * const __val = (quoted_arg); g_string_append_len_inline (command_line , __val, (__val != ((void*)0)) ? (gssize) strlen (((__val) + ! (__val))) : (gssize) -1); }) : g_string_append_len_inline (command_line , quoted_arg, (gssize) -1)); | |||
| 204 | g_string_append_c(command_line, '"')g_string_append_c_inline (command_line, '"'); | |||
| 205 | } else { | |||
| 206 | g_string_append(command_line, quoted_arg)(__builtin_constant_p (quoted_arg) ? __extension__ ({ const char * const __val = (quoted_arg); g_string_append_len_inline (command_line , __val, (__val != ((void*)0)) ? (gssize) strlen (((__val) + ! (__val))) : (gssize) -1); }) : g_string_append_len_inline (command_line , quoted_arg, (gssize) -1)); | |||
| 207 | } | |||
| 208 | g_free(quoted_arg); | |||
| 209 | ||||
| 210 | for (int i = 1; argv[i]; i++) { | |||
| 211 | quoted_arg = protect_arg(argv[i]); | |||
| 212 | g_string_append_c(command_line, ' ')g_string_append_c_inline (command_line, ' '); | |||
| 213 | g_string_append(command_line, quoted_arg)(__builtin_constant_p (quoted_arg) ? __extension__ ({ const char * const __val = (quoted_arg); g_string_append_len_inline (command_line , __val, (__val != ((void*)0)) ? (gssize) strlen (((__val) + ! (__val))) : (gssize) -1); }) : g_string_append_len_inline (command_line , quoted_arg, (gssize) -1)); | |||
| 214 | g_free(quoted_arg); | |||
| 215 | } | |||
| 216 | #else | |||
| 217 | for (int i = 0; argv[i]; i++) { | |||
| 218 | char *quoted_arg = g_shell_quote(argv[i]); | |||
| 219 | if (i != 0) { | |||
| 220 | g_string_append_c(command_line, ' ')g_string_append_c_inline (command_line, ' '); | |||
| 221 | } | |||
| 222 | g_string_append(command_line, quoted_arg)(__builtin_constant_p (quoted_arg) ? __extension__ ({ const char * const __val = (quoted_arg); g_string_append_len_inline (command_line , __val, (__val != ((void*)0)) ? (gssize) strlen (((__val) + ! (__val))) : (gssize) -1); }) : g_string_append_len_inline (command_line , quoted_arg, (gssize) -1)); | |||
| 223 | g_free(quoted_arg); | |||
| 224 | } | |||
| 225 | #endif | |||
| 226 | return g_string_free(command_line, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((command_line ), ((0))) : g_string_free_and_steal (command_line)) : (g_string_free ) ((command_line), ((0)))); | |||
| 227 | } | |||
| 228 | ||||
| 229 | bool_Bool ws_pipe_spawn_sync(const char *working_directory, const char *command, int argc, char **args, char **command_output) | |||
| 230 | { | |||
| 231 | bool_Bool status = false0; | |||
| 232 | bool_Bool result = false0; | |||
| 233 | char *local_output = NULL((void*)0); | |||
| 234 | #ifdef _WIN32 | |||
| 235 | ||||
| 236 | #define BUFFER_SIZE 16384 | |||
| 237 | ||||
| 238 | STARTUPINFO info; | |||
| 239 | PROCESS_INFORMATION processInfo; | |||
| 240 | ||||
| 241 | SECURITY_ATTRIBUTES sa; | |||
| 242 | HANDLE child_stdout_rd = NULL((void*)0); | |||
| 243 | HANDLE child_stdout_wr = NULL((void*)0); | |||
| 244 | HANDLE child_stderr_rd = NULL((void*)0); | |||
| 245 | HANDLE child_stderr_wr = NULL((void*)0); | |||
| 246 | HANDLE inherit_handles[2]; | |||
| 247 | ||||
| 248 | OVERLAPPED stdout_overlapped; | |||
| 249 | OVERLAPPED stderr_overlapped; | |||
| 250 | #else | |||
| 251 | int exit_status = 0; | |||
| 252 | #endif | |||
| 253 | ||||
| 254 | char **argv = convert_to_argv(command, argc, args); | |||
| 255 | char *command_line = convert_to_command_line(argv); | |||
| 256 | ||||
| 257 | ws_debug("command line: %s", command_line)do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 257, __func__, "command line: %s", command_line); } } while (0); | |||
| 258 | ||||
| 259 | uint64_t start_time = g_get_monotonic_time(); | |||
| 260 | ||||
| 261 | #ifdef _WIN32 | |||
| 262 | /* Setup overlapped structures. Create Manual Reset events, initially not signalled */ | |||
| 263 | memset(&stdout_overlapped, 0, sizeof(OVERLAPPED)); | |||
| 264 | memset(&stderr_overlapped, 0, sizeof(OVERLAPPED)); | |||
| 265 | stdout_overlapped.hEvent = CreateEvent(NULL((void*)0), true1, false0, NULL((void*)0)); | |||
| 266 | if (!stdout_overlapped.hEvent) | |||
| 267 | { | |||
| 268 | g_free(command_line); | |||
| 269 | g_strfreev(argv); | |||
| 270 | ws_debug("Could not create stdout overlapped event")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 270, __func__, "Could not create stdout overlapped event"); } } while (0); | |||
| 271 | return false0; | |||
| 272 | } | |||
| 273 | stderr_overlapped.hEvent = CreateEvent(NULL((void*)0), true1, false0, NULL((void*)0)); | |||
| 274 | if (!stderr_overlapped.hEvent) | |||
| 275 | { | |||
| 276 | CloseHandle(stdout_overlapped.hEvent); | |||
| 277 | g_free(command_line); | |||
| 278 | g_strfreev(argv); | |||
| 279 | ws_debug("Could not create stderr overlapped event")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 279, __func__, "Could not create stderr overlapped event"); } } while (0); | |||
| 280 | return false0; | |||
| 281 | } | |||
| 282 | ||||
| 283 | memset(&sa, 0, sizeof(SECURITY_ATTRIBUTES)); | |||
| 284 | sa.nLength = sizeof(SECURITY_ATTRIBUTES); | |||
| 285 | sa.bInheritHandle = false0; | |||
| 286 | sa.lpSecurityDescriptor = NULL((void*)0); | |||
| 287 | ||||
| 288 | if (!ws_pipe_create_overlapped_read(&child_stdout_rd, &child_stdout_wr, &sa, 0)) | |||
| 289 | { | |||
| 290 | CloseHandle(stdout_overlapped.hEvent); | |||
| 291 | CloseHandle(stderr_overlapped.hEvent); | |||
| 292 | g_free(command_line); | |||
| 293 | g_strfreev(argv); | |||
| 294 | ws_debug("Could not create stdout handle")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 294, __func__, "Could not create stdout handle"); } } while (0); | |||
| 295 | return false0; | |||
| 296 | } | |||
| 297 | ||||
| 298 | if (!ws_pipe_create_overlapped_read(&child_stderr_rd, &child_stderr_wr, &sa, 0)) | |||
| 299 | { | |||
| 300 | CloseHandle(stdout_overlapped.hEvent); | |||
| 301 | CloseHandle(stderr_overlapped.hEvent); | |||
| 302 | CloseHandle(child_stdout_rd); | |||
| 303 | CloseHandle(child_stdout_wr); | |||
| 304 | g_free(command_line); | |||
| 305 | g_strfreev(argv); | |||
| 306 | ws_debug("Could not create stderr handle")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 306, __func__, "Could not create stderr handle"); } } while (0); | |||
| 307 | return false0; | |||
| 308 | } | |||
| 309 | ||||
| 310 | inherit_handles[0] = child_stderr_wr; | |||
| 311 | inherit_handles[1] = child_stdout_wr; | |||
| 312 | ||||
| 313 | memset(&processInfo, 0, sizeof(PROCESS_INFORMATION)); | |||
| 314 | memset(&info, 0, sizeof(STARTUPINFO)); | |||
| 315 | ||||
| 316 | info.cb = sizeof(STARTUPINFO); | |||
| 317 | info.hStdError = child_stderr_wr; | |||
| 318 | info.hStdOutput = child_stdout_wr; | |||
| 319 | info.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; | |||
| 320 | info.wShowWindow = SW_HIDE; | |||
| 321 | ||||
| 322 | if (win32_create_process(NULL((void*)0), command_line, NULL((void*)0), NULL((void*)0), G_N_ELEMENTS(inherit_handles)(sizeof (inherit_handles) / sizeof ((inherit_handles)[0])), inherit_handles, | |||
| 323 | CREATE_NEW_CONSOLE, NULL((void*)0), working_directory, &info, &processInfo)) | |||
| 324 | { | |||
| 325 | char* stdout_buffer = (char*)g_malloc(BUFFER_SIZE); | |||
| 326 | char* stderr_buffer = (char*)g_malloc(BUFFER_SIZE); | |||
| 327 | DWORD dw; | |||
| 328 | DWORD bytes_read; | |||
| 329 | GString *output_string = g_string_new(NULL((void*)0)); | |||
| 330 | bool_Bool process_finished = false0; | |||
| 331 | bool_Bool pending_stdout = true1; | |||
| 332 | bool_Bool pending_stderr = true1; | |||
| 333 | ||||
| 334 | /* Start asynchronous reads from child process stdout and stderr */ | |||
| 335 | if (!ReadFile(child_stdout_rd, stdout_buffer, BUFFER_SIZE, NULL((void*)0), &stdout_overlapped)) | |||
| 336 | { | |||
| 337 | if (GetLastError() != ERROR_IO_PENDING) | |||
| 338 | { | |||
| 339 | ws_debug("ReadFile on child stdout pipe failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 339, __func__, "ReadFile on child stdout pipe failed. Error %ld" , GetLastError()); } } while (0); | |||
| 340 | pending_stdout = false0; | |||
| 341 | } | |||
| 342 | } | |||
| 343 | ||||
| 344 | if (!ReadFile(child_stderr_rd, stderr_buffer, BUFFER_SIZE, NULL((void*)0), &stderr_overlapped)) | |||
| 345 | { | |||
| 346 | if (GetLastError() != ERROR_IO_PENDING) | |||
| 347 | { | |||
| 348 | ws_debug("ReadFile on child stderr pipe failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 348, __func__, "ReadFile on child stderr pipe failed. Error %ld" , GetLastError()); } } while (0); | |||
| 349 | pending_stderr = false0; | |||
| 350 | } | |||
| 351 | } | |||
| 352 | ||||
| 353 | for (;;) | |||
| 354 | { | |||
| 355 | HANDLE handles[3]; | |||
| 356 | DWORD n_handles = 0; | |||
| 357 | if (!process_finished) | |||
| 358 | { | |||
| 359 | handles[n_handles++] = processInfo.hProcess; | |||
| 360 | } | |||
| 361 | if (pending_stdout) | |||
| 362 | { | |||
| 363 | handles[n_handles++] = stdout_overlapped.hEvent; | |||
| 364 | } | |||
| 365 | if (pending_stderr) | |||
| 366 | { | |||
| 367 | handles[n_handles++] = stderr_overlapped.hEvent; | |||
| 368 | } | |||
| 369 | ||||
| 370 | if (!n_handles) | |||
| 371 | { | |||
| 372 | /* No more things to wait */ | |||
| 373 | break; | |||
| 374 | } | |||
| 375 | ||||
| 376 | dw = WaitForMultipleObjects(n_handles, handles, false0, INFINITE); | |||
| 377 | if (dw < (WAIT_OBJECT_0 + n_handles)) | |||
| 378 | { | |||
| 379 | int i = dw - WAIT_OBJECT_0; | |||
| 380 | if (handles[i] == processInfo.hProcess) | |||
| 381 | { | |||
| 382 | /* Process finished but there might still be unread data in the pipe. | |||
| 383 | * Close the write pipes, so ReadFile does not wait indefinitely. | |||
| 384 | */ | |||
| 385 | CloseHandle(child_stdout_wr); | |||
| 386 | CloseHandle(child_stderr_wr); | |||
| 387 | process_finished = true1; | |||
| 388 | } | |||
| 389 | else if (handles[i] == stdout_overlapped.hEvent) | |||
| 390 | { | |||
| 391 | bytes_read = 0; | |||
| 392 | if (!GetOverlappedResult(child_stdout_rd, &stdout_overlapped, &bytes_read, true1)) | |||
| 393 | { | |||
| 394 | if (GetLastError() == ERROR_BROKEN_PIPE) | |||
| 395 | { | |||
| 396 | pending_stdout = false0; | |||
| 397 | continue; | |||
| 398 | } | |||
| 399 | ws_debug("GetOverlappedResult on stdout failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 399, __func__, "GetOverlappedResult on stdout failed. Error %ld" , GetLastError()); } } while (0); | |||
| 400 | } | |||
| 401 | if (process_finished && (bytes_read == 0)) | |||
| 402 | { | |||
| 403 | /* We have drained the pipe and there isn't any process that holds active write handle to the pipe. */ | |||
| 404 | pending_stdout = false0; | |||
| 405 | continue; | |||
| 406 | } | |||
| 407 | g_string_append_len(output_string, stdout_buffer, bytes_read)g_string_append_len_inline (output_string, stdout_buffer, bytes_read ); | |||
| 408 | if (!ReadFile(child_stdout_rd, stdout_buffer, BUFFER_SIZE, NULL((void*)0), &stdout_overlapped)) | |||
| 409 | { | |||
| 410 | if (GetLastError() != ERROR_IO_PENDING) | |||
| 411 | { | |||
| 412 | ws_debug("ReadFile on child stdout pipe failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 412, __func__, "ReadFile on child stdout pipe failed. Error %ld" , GetLastError()); } } while (0); | |||
| 413 | pending_stdout = false0; | |||
| 414 | } | |||
| 415 | } | |||
| 416 | } | |||
| 417 | else if (handles[i] == stderr_overlapped.hEvent) | |||
| 418 | { | |||
| 419 | /* Discard the stderr data just like non-windows version of this function does. */ | |||
| 420 | bytes_read = 0; | |||
| 421 | if (!GetOverlappedResult(child_stderr_rd, &stderr_overlapped, &bytes_read, true1)) | |||
| 422 | { | |||
| 423 | if (GetLastError() == ERROR_BROKEN_PIPE) | |||
| 424 | { | |||
| 425 | pending_stderr = false0; | |||
| 426 | continue; | |||
| 427 | } | |||
| 428 | ws_debug("GetOverlappedResult on stderr failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 428, __func__, "GetOverlappedResult on stderr failed. Error %ld" , GetLastError()); } } while (0); | |||
| 429 | } | |||
| 430 | if (process_finished && (bytes_read == 0)) | |||
| 431 | { | |||
| 432 | pending_stderr = false0; | |||
| 433 | continue; | |||
| 434 | } | |||
| 435 | if (!ReadFile(child_stderr_rd, stderr_buffer, BUFFER_SIZE, NULL((void*)0), &stderr_overlapped)) | |||
| 436 | { | |||
| 437 | if (GetLastError() != ERROR_IO_PENDING) | |||
| 438 | { | |||
| 439 | ws_debug("ReadFile on child stderr pipe failed. Error %ld", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 439, __func__, "ReadFile on child stderr pipe failed. Error %ld" , GetLastError()); } } while (0); | |||
| 440 | pending_stderr = false0; | |||
| 441 | } | |||
| 442 | } | |||
| 443 | } | |||
| 444 | } | |||
| 445 | else | |||
| 446 | { | |||
| 447 | ws_debug("WaitForMultipleObjects returned 0x%08lX. Error %ld", dw, GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 447, __func__, "WaitForMultipleObjects returned 0x%08lX. Error %ld" , dw, GetLastError()); } } while (0); | |||
| 448 | } | |||
| 449 | } | |||
| 450 | ||||
| 451 | g_free(stdout_buffer); | |||
| 452 | g_free(stderr_buffer); | |||
| 453 | ||||
| 454 | status = GetExitCodeProcess(processInfo.hProcess, &dw); | |||
| 455 | if (status && dw != 0) | |||
| 456 | { | |||
| 457 | status = false0; | |||
| 458 | } | |||
| 459 | ||||
| 460 | local_output = g_string_free(output_string, FALSE)(__builtin_constant_p ((0)) ? (((0)) ? (g_string_free) ((output_string ), ((0))) : g_string_free_and_steal (output_string)) : (g_string_free ) ((output_string), ((0)))); | |||
| 461 | ||||
| 462 | CloseHandle(child_stdout_rd); | |||
| 463 | CloseHandle(child_stderr_rd); | |||
| 464 | ||||
| 465 | CloseHandle(processInfo.hProcess); | |||
| 466 | CloseHandle(processInfo.hThread); | |||
| 467 | } | |||
| 468 | else | |||
| 469 | { | |||
| 470 | status = false0; | |||
| 471 | ||||
| 472 | CloseHandle(child_stdout_rd); | |||
| 473 | CloseHandle(child_stdout_wr); | |||
| 474 | CloseHandle(child_stderr_rd); | |||
| 475 | CloseHandle(child_stderr_wr); | |||
| 476 | } | |||
| 477 | ||||
| 478 | CloseHandle(stdout_overlapped.hEvent); | |||
| 479 | CloseHandle(stderr_overlapped.hEvent); | |||
| 480 | #else | |||
| 481 | ||||
| 482 | GSpawnFlags flags = (GSpawnFlags)0; | |||
| 483 | GSpawnChildSetupFunc child_setup = NULL((void*)0); | |||
| 484 | #ifdef HAS_G_SPAWN_LINUX_THREAD_SAFETY_BUG | |||
| 485 | flags = (GSpawnFlags)(flags | G_SPAWN_LEAVE_DESCRIPTORS_OPEN); | |||
| 486 | child_setup = close_non_standard_fds_linux; | |||
| 487 | #endif | |||
| 488 | status = g_spawn_sync(working_directory, argv, NULL((void*)0), | |||
| 489 | flags, child_setup, NULL((void*)0), &local_output, NULL((void*)0), &exit_status, NULL((void*)0)); | |||
| 490 | ||||
| 491 | if (status && exit_status != 0) | |||
| 492 | status = false0; | |||
| 493 | #endif | |||
| 494 | ||||
| 495 | ws_debug("%s finished in %.3fms", argv[0], (g_get_monotonic_time() - start_time) / 1000.0)do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 495, __func__, "%s finished in %.3fms", argv[0], (g_get_monotonic_time () - start_time) / 1000.0); } } while (0); | |||
| 496 | ||||
| 497 | if (status) | |||
| 498 | { | |||
| 499 | if (local_output != NULL((void*)0)) { | |||
| 500 | ws_noisy("spawn output: %s", local_output)do { if (1) { ws_log_full("Capture", LOG_LEVEL_NOISY, "wsutil/ws_pipe.c" , 500, __func__, "spawn output: %s", local_output); } } while (0); | |||
| 501 | if (command_output != NULL((void*)0)) | |||
| 502 | *command_output = g_strdup(local_output)g_strdup_inline (local_output); | |||
| 503 | } | |||
| 504 | result = true1; | |||
| 505 | } | |||
| 506 | ||||
| 507 | g_free(local_output); | |||
| 508 | g_free(command_line); | |||
| 509 | g_strfreev(argv); | |||
| 510 | ||||
| 511 | return result; | |||
| 512 | } | |||
| 513 | ||||
| 514 | void ws_pipe_init(ws_pipe_t *ws_pipe) | |||
| 515 | { | |||
| 516 | if (!ws_pipe) return; | |||
| 517 | memset(ws_pipe, 0, sizeof(ws_pipe_t)); | |||
| 518 | ws_pipe->pid = WS_INVALID_PID-1; | |||
| 519 | } | |||
| 520 | ||||
| 521 | GPid ws_pipe_spawn_async(ws_pipe_t *ws_pipe, GPtrArray *args) | |||
| 522 | { | |||
| 523 | GPid pid = WS_INVALID_PID-1; | |||
| 524 | int stdin_fd, stdout_fd, stderr_fd; | |||
| 525 | #ifdef _WIN32 | |||
| 526 | STARTUPINFO info; | |||
| 527 | PROCESS_INFORMATION processInfo; | |||
| 528 | ||||
| 529 | SECURITY_ATTRIBUTES sa; | |||
| 530 | HANDLE child_stdin_rd = NULL((void*)0); | |||
| 531 | HANDLE child_stdin_wr = NULL((void*)0); | |||
| 532 | HANDLE child_stdout_rd = NULL((void*)0); | |||
| 533 | HANDLE child_stdout_wr = NULL((void*)0); | |||
| 534 | HANDLE child_stderr_rd = NULL((void*)0); | |||
| 535 | HANDLE child_stderr_wr = NULL((void*)0); | |||
| 536 | HANDLE inherit_handles[3]; | |||
| 537 | #endif | |||
| 538 | ||||
| 539 | // XXX harmonize handling of command arguments for the sync/async functions | |||
| 540 | // and make them const? This array ends with a trailing NULL by the way. | |||
| 541 | char **args_array = (char **)args->pdata; | |||
| 542 | char **argv = convert_to_argv(args_array[0], args->len - 2, args_array + 1); | |||
| ||||
| 543 | char *command_line = convert_to_command_line(argv); | |||
| 544 | ||||
| 545 | ws_debug("command line: %s", command_line)do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 545, __func__, "command line: %s", command_line); } } while (0); | |||
| 546 | ||||
| 547 | #ifdef _WIN32 | |||
| 548 | sa.nLength = sizeof(SECURITY_ATTRIBUTES); | |||
| 549 | sa.bInheritHandle = false0; | |||
| 550 | sa.lpSecurityDescriptor = NULL((void*)0); | |||
| 551 | ||||
| 552 | if (!CreatePipe(&child_stdin_rd, &child_stdin_wr, &sa, 0)) | |||
| 553 | { | |||
| 554 | g_free(command_line); | |||
| 555 | g_strfreev(argv); | |||
| 556 | ws_debug("Could not create stdin handle")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 556, __func__, "Could not create stdin handle"); } } while ( 0); | |||
| 557 | return WS_INVALID_PID-1; | |||
| 558 | } | |||
| 559 | ||||
| 560 | if (!CreatePipe(&child_stdout_rd, &child_stdout_wr, &sa, 0)) | |||
| 561 | { | |||
| 562 | CloseHandle(child_stdin_rd); | |||
| 563 | CloseHandle(child_stdin_wr); | |||
| 564 | g_free(command_line); | |||
| 565 | g_strfreev(argv); | |||
| 566 | ws_debug("Could not create stdout handle")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 566, __func__, "Could not create stdout handle"); } } while (0); | |||
| 567 | return WS_INVALID_PID-1; | |||
| 568 | } | |||
| 569 | ||||
| 570 | if (!CreatePipe(&child_stderr_rd, &child_stderr_wr, &sa, 0)) | |||
| 571 | { | |||
| 572 | CloseHandle(child_stdin_rd); | |||
| 573 | CloseHandle(child_stdin_wr); | |||
| 574 | CloseHandle(child_stdout_rd); | |||
| 575 | CloseHandle(child_stdout_wr); | |||
| 576 | g_free(command_line); | |||
| 577 | g_strfreev(argv); | |||
| 578 | ws_debug("Could not create stderr handle")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 578, __func__, "Could not create stderr handle"); } } while (0); | |||
| 579 | return WS_INVALID_PID-1; | |||
| 580 | } | |||
| 581 | ||||
| 582 | inherit_handles[0] = child_stdin_rd; | |||
| 583 | inherit_handles[1] = child_stderr_wr; | |||
| 584 | inherit_handles[2] = child_stdout_wr; | |||
| 585 | ||||
| 586 | memset(&processInfo, 0, sizeof(PROCESS_INFORMATION)); | |||
| 587 | memset(&info, 0, sizeof(STARTUPINFO)); | |||
| 588 | ||||
| 589 | info.cb = sizeof(STARTUPINFO); | |||
| 590 | info.hStdInput = child_stdin_rd; | |||
| 591 | info.hStdError = child_stderr_wr; | |||
| 592 | info.hStdOutput = child_stdout_wr; | |||
| 593 | info.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; | |||
| 594 | info.wShowWindow = SW_HIDE; | |||
| 595 | ||||
| 596 | if (win32_create_process(NULL((void*)0), command_line, NULL((void*)0), NULL((void*)0), G_N_ELEMENTS(inherit_handles)(sizeof (inherit_handles) / sizeof ((inherit_handles)[0])), inherit_handles, | |||
| 597 | CREATE_NEW_CONSOLE, NULL((void*)0), NULL((void*)0), &info, &processInfo)) | |||
| 598 | { | |||
| 599 | stdin_fd = _open_osfhandle((intptr_t)(child_stdin_wr), _O_BINARY); | |||
| 600 | stdout_fd = _open_osfhandle((intptr_t)(child_stdout_rd), _O_BINARY); | |||
| 601 | stderr_fd = _open_osfhandle((intptr_t)(child_stderr_rd), _O_BINARY); | |||
| 602 | pid = processInfo.hProcess; | |||
| 603 | CloseHandle(processInfo.hThread); | |||
| 604 | } | |||
| 605 | else | |||
| 606 | { | |||
| 607 | CloseHandle(child_stdin_wr); | |||
| 608 | CloseHandle(child_stdout_rd); | |||
| 609 | CloseHandle(child_stderr_rd); | |||
| 610 | } | |||
| 611 | ||||
| 612 | /* We no longer need other (child) end of pipes. The child process holds | |||
| 613 | * its own handles that will be closed on process exit. However, we have | |||
| 614 | * to close *our* handles as otherwise read() on stdout_fd and stderr_fd | |||
| 615 | * will block indefinitely after the process exits. | |||
| 616 | */ | |||
| 617 | CloseHandle(child_stdin_rd); | |||
| 618 | CloseHandle(child_stdout_wr); | |||
| 619 | CloseHandle(child_stderr_wr); | |||
| 620 | #else | |||
| 621 | ||||
| 622 | GError *error = NULL((void*)0); | |||
| 623 | GSpawnFlags flags = G_SPAWN_DO_NOT_REAP_CHILD; | |||
| 624 | GSpawnChildSetupFunc child_setup = NULL((void*)0); | |||
| 625 | #ifdef HAS_G_SPAWN_LINUX_THREAD_SAFETY_BUG | |||
| 626 | flags = (GSpawnFlags)(flags | G_SPAWN_LEAVE_DESCRIPTORS_OPEN); | |||
| 627 | child_setup = close_non_standard_fds_linux; | |||
| 628 | #endif | |||
| 629 | bool_Bool spawned = g_spawn_async_with_pipes(NULL((void*)0), argv, NULL((void*)0), | |||
| 630 | flags, child_setup, NULL((void*)0), | |||
| 631 | &pid, &stdin_fd, &stdout_fd, &stderr_fd, &error); | |||
| 632 | if (!spawned) { | |||
| 633 | ws_debug("Error creating async pipe: %s", error->message)do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 633, __func__, "Error creating async pipe: %s", error->message ); } } while (0); | |||
| 634 | g_free(error->message); | |||
| 635 | } | |||
| 636 | #endif | |||
| 637 | ||||
| 638 | g_free(command_line); | |||
| 639 | g_strfreev(argv); | |||
| 640 | ||||
| 641 | ws_pipe->pid = pid; | |||
| ||||
| 642 | ||||
| 643 | if (pid != WS_INVALID_PID-1) { | |||
| 644 | #ifdef _WIN32 | |||
| 645 | ws_pipe->stdin_io = g_io_channel_win32_new_fd(stdin_fd); | |||
| 646 | ws_pipe->stdout_io = g_io_channel_win32_new_fd(stdout_fd); | |||
| 647 | ws_pipe->stderr_io = g_io_channel_win32_new_fd(stderr_fd); | |||
| 648 | #else | |||
| 649 | ws_pipe->stdin_io = g_io_channel_unix_new(stdin_fd); | |||
| 650 | ws_pipe->stdout_io = g_io_channel_unix_new(stdout_fd); | |||
| 651 | ws_pipe->stderr_io = g_io_channel_unix_new(stderr_fd); | |||
| 652 | #endif | |||
| 653 | g_io_channel_set_encoding(ws_pipe->stdin_io, NULL((void*)0), NULL((void*)0)); | |||
| 654 | g_io_channel_set_encoding(ws_pipe->stdout_io, NULL((void*)0), NULL((void*)0)); | |||
| 655 | g_io_channel_set_encoding(ws_pipe->stderr_io, NULL((void*)0), NULL((void*)0)); | |||
| 656 | g_io_channel_set_buffered(ws_pipe->stdin_io, false0); | |||
| 657 | g_io_channel_set_buffered(ws_pipe->stdout_io, false0); | |||
| 658 | g_io_channel_set_buffered(ws_pipe->stderr_io, false0); | |||
| 659 | g_io_channel_set_close_on_unref(ws_pipe->stdin_io, true1); | |||
| 660 | g_io_channel_set_close_on_unref(ws_pipe->stdout_io, true1); | |||
| 661 | g_io_channel_set_close_on_unref(ws_pipe->stderr_io, true1); | |||
| 662 | } | |||
| 663 | ||||
| 664 | return pid; | |||
| 665 | } | |||
| 666 | ||||
| 667 | #ifdef _WIN32 | |||
| 668 | ||||
| 669 | typedef struct | |||
| 670 | { | |||
| 671 | HANDLE pipeHandle; | |||
| 672 | OVERLAPPED ol; | |||
| 673 | BOOL pendingIO; | |||
| 674 | } PIPEINTS; | |||
| 675 | ||||
| 676 | bool_Bool | |||
| 677 | ws_pipe_wait_for_pipe(HANDLE * pipe_handles, int num_pipe_handles, HANDLE pid) | |||
| 678 | { | |||
| 679 | PIPEINTS pipeinsts[3]; | |||
| 680 | HANDLE handles[4]; | |||
| 681 | bool_Bool result = true1; | |||
| 682 | ||||
| 683 | SecureZeroMemory(pipeinsts, sizeof(pipeinsts)); | |||
| 684 | ||||
| 685 | if (num_pipe_handles == 0 || num_pipe_handles > 3) | |||
| 686 | { | |||
| 687 | ws_debug("Invalid number of pipes given as argument.")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 687, __func__, "Invalid number of pipes given as argument." ); } } while (0); | |||
| 688 | return false0; | |||
| 689 | } | |||
| 690 | ||||
| 691 | for (int i = 0; i < num_pipe_handles; ++i) | |||
| 692 | { | |||
| 693 | pipeinsts[i].ol.hEvent = CreateEvent(NULL((void*)0), true1, false0, NULL((void*)0)); | |||
| 694 | if (!pipeinsts[i].ol.hEvent) | |||
| 695 | { | |||
| 696 | ws_debug("Could not create overlapped event")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 696, __func__, "Could not create overlapped event"); } } while (0); | |||
| 697 | for (int j = 0; j < i; j++) | |||
| 698 | { | |||
| 699 | CloseHandle(pipeinsts[j].ol.hEvent); | |||
| 700 | } | |||
| 701 | return false0; | |||
| 702 | } | |||
| 703 | } | |||
| 704 | ||||
| 705 | for (int i = 0; i < num_pipe_handles; ++i) | |||
| 706 | { | |||
| 707 | pipeinsts[i].pipeHandle = pipe_handles[i]; | |||
| 708 | pipeinsts[i].ol.Pointer = 0; | |||
| 709 | pipeinsts[i].pendingIO = false0; | |||
| 710 | if (!ConnectNamedPipe(pipeinsts[i].pipeHandle, &pipeinsts[i].ol)) | |||
| 711 | { | |||
| 712 | DWORD error = GetLastError(); | |||
| 713 | switch (error) | |||
| 714 | { | |||
| 715 | case ERROR_IO_PENDING: | |||
| 716 | pipeinsts[i].pendingIO = true1; | |||
| 717 | break; | |||
| 718 | ||||
| 719 | case ERROR_PIPE_CONNECTED: | |||
| 720 | SetEvent(pipeinsts[i].ol.hEvent); | |||
| 721 | break; | |||
| 722 | ||||
| 723 | default: | |||
| 724 | ws_debug("ConnectNamedPipe failed with %ld\n.", error)do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 724, __func__, "ConnectNamedPipe failed with %ld\n.", error ); } } while (0); | |||
| 725 | result = false0; | |||
| 726 | } | |||
| 727 | } | |||
| 728 | } | |||
| 729 | ||||
| 730 | while (result) | |||
| 731 | { | |||
| 732 | DWORD dw; | |||
| 733 | int num_handles = 0; | |||
| 734 | for (int i = 0; i < num_pipe_handles; ++i) | |||
| 735 | { | |||
| 736 | if (pipeinsts[i].pendingIO) | |||
| 737 | { | |||
| 738 | handles[num_handles] = pipeinsts[i].ol.hEvent; | |||
| 739 | num_handles++; | |||
| 740 | } | |||
| 741 | } | |||
| 742 | if (num_handles == 0) | |||
| 743 | { | |||
| 744 | /* All pipes have been successfully connected */ | |||
| 745 | break; | |||
| 746 | } | |||
| 747 | /* Wait for process in case it exits before the pipes have connected */ | |||
| 748 | handles[num_handles] = pid; | |||
| 749 | num_handles++; | |||
| 750 | ||||
| 751 | dw = WaitForMultipleObjects(num_handles, handles, false0, 30000); | |||
| 752 | int handle_idx = dw - WAIT_OBJECT_0; | |||
| 753 | if (dw == WAIT_TIMEOUT) | |||
| 754 | { | |||
| 755 | ws_debug("extcap didn't connect to pipe within 30 seconds.")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 755, __func__, "extcap didn't connect to pipe within 30 seconds." ); } } while (0); | |||
| 756 | result = false0; | |||
| 757 | break; | |||
| 758 | } | |||
| 759 | // If index points to our handles array | |||
| 760 | else if (handle_idx >= 0 && handle_idx < num_handles) | |||
| 761 | { | |||
| 762 | if (handles[handle_idx] == pid) | |||
| 763 | { | |||
| 764 | ws_debug("extcap terminated without connecting to pipe.")do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 764, __func__, "extcap terminated without connecting to pipe." ); } } while (0); | |||
| 765 | result = false0; | |||
| 766 | } | |||
| 767 | for (int i = 0; i < num_pipe_handles; ++i) | |||
| 768 | { | |||
| 769 | if (handles[handle_idx] == pipeinsts[i].ol.hEvent) | |||
| 770 | { | |||
| 771 | DWORD cbRet; | |||
| 772 | BOOL success = GetOverlappedResult( | |||
| 773 | pipeinsts[i].pipeHandle, // handle to pipe | |||
| 774 | &pipeinsts[i].ol, // OVERLAPPED structure | |||
| 775 | &cbRet, // bytes transferred | |||
| 776 | true1); // wait | |||
| 777 | if (!success) | |||
| 778 | { | |||
| 779 | ws_debug("Error %ld \n.", GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 779, __func__, "Error %ld \n.", GetLastError()); } } while ( 0); | |||
| 780 | result = false0; | |||
| 781 | } | |||
| 782 | pipeinsts[i].pendingIO = false0; | |||
| 783 | } | |||
| 784 | } | |||
| 785 | } | |||
| 786 | else | |||
| 787 | { | |||
| 788 | ws_debug("WaitForMultipleObjects returned 0x%08lX. Error %ld", dw, GetLastError())do { if (1) { ws_log_full("Capture", LOG_LEVEL_DEBUG, "wsutil/ws_pipe.c" , 788, __func__, "WaitForMultipleObjects returned 0x%08lX. Error %ld" , dw, GetLastError()); } } while (0); | |||
| 789 | result = false0; | |||
| 790 | } | |||
| 791 | } | |||
| 792 | ||||
| 793 | for (int i = 0; i < num_pipe_handles; ++i) | |||
| 794 | { | |||
| 795 | if (pipeinsts[i].pendingIO) | |||
| 796 | { | |||
| 797 | CancelIoEx(pipeinsts[i].pipeHandle, &pipeinsts[i].ol); | |||
| 798 | WaitForSingleObject(pipeinsts[i].ol.hEvent, INFINITE); | |||
| 799 | } | |||
| 800 | CloseHandle(pipeinsts[i].ol.hEvent); | |||
| 801 | } | |||
| 802 | ||||
| 803 | return result; | |||
| 804 | } | |||
| 805 | #endif | |||
| 806 | ||||
| 807 | bool_Bool | |||
| 808 | ws_pipe_data_available(int pipe_fd) | |||
| 809 | { | |||
| 810 | #ifdef _WIN32 /* PeekNamedPipe */ | |||
| 811 | HANDLE hPipe = (HANDLE) _get_osfhandle(pipe_fd); | |||
| 812 | DWORD bytes_avail; | |||
| 813 | ||||
| 814 | if (hPipe == INVALID_HANDLE_VALUE) | |||
| 815 | { | |||
| 816 | return false0; | |||
| 817 | } | |||
| 818 | ||||
| 819 | if (! PeekNamedPipe(hPipe, NULL((void*)0), 0, NULL((void*)0), &bytes_avail, NULL((void*)0))) | |||
| 820 | { | |||
| 821 | return false0; | |||
| 822 | } | |||
| 823 | ||||
| 824 | if (bytes_avail > 0) | |||
| 825 | { | |||
| 826 | return true1; | |||
| 827 | } | |||
| 828 | return false0; | |||
| 829 | #else /* select */ | |||
| 830 | fd_set rfds; | |||
| 831 | struct timeval timeout; | |||
| 832 | ||||
| 833 | FD_ZERO(&rfds)do { unsigned int __i; fd_set *__arr = (&rfds); for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) ((__arr )->__fds_bits)[__i] = 0; } while (0); | |||
| 834 | FD_SET(pipe_fd, &rfds)((void) (((&rfds)->__fds_bits)[((pipe_fd) / (8 * (int) sizeof (__fd_mask)))] |= ((__fd_mask) (1UL << ((pipe_fd ) % (8 * (int) sizeof (__fd_mask))))))); | |||
| 835 | timeout.tv_sec = 0; | |||
| 836 | timeout.tv_usec = 0; | |||
| 837 | ||||
| 838 | if (select(pipe_fd + 1, &rfds, NULL((void*)0), NULL((void*)0), &timeout) > 0) | |||
| 839 | { | |||
| 840 | return true1; | |||
| 841 | } | |||
| 842 | ||||
| 843 | return false0; | |||
| 844 | #endif | |||
| 845 | } | |||
| 846 | ||||
| 847 | /* | |||
| 848 | * Editor modelines - https://www.wireshark.org/tools/modelines.html | |||
| 849 | * | |||
| 850 | * Local variables: | |||
| 851 | * c-basic-offset: 4 | |||
| 852 | * tab-width: 8 | |||
| 853 | * indent-tabs-mode: nil | |||
| 854 | * End: | |||
| 855 | * | |||
| 856 | * vi: set shiftwidth=4 tabstop=8 expandtab: | |||
| 857 | * :indentSize=4:tabSize=8:noTabs=true: | |||
| 858 | */ |