Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
Markus Armbruster | 0b8fa32 | 2019-05-23 16:35:07 +0200 | [diff] [blame] | 24 | |
Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 25 | #include "qemu/osdep.h" |
| 26 | #include "qapi/error.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 27 | #include "qemu/main-loop.h" |
Markus Armbruster | 0b8fa32 | 2019-05-23 16:35:07 +0200 | [diff] [blame] | 28 | #include "qemu/module.h" |
Marc-André Lureau | 8228e35 | 2017-01-26 17:19:46 +0400 | [diff] [blame] | 29 | #include "chardev/char-win.h" |
| 30 | #include "chardev/char-win-stdio.h" |
Eduardo Habkost | db1015e | 2020-09-03 16:43:22 -0400 | [diff] [blame] | 31 | #include "qom/object.h" |
Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 32 | |
Eduardo Habkost | db1015e | 2020-09-03 16:43:22 -0400 | [diff] [blame] | 33 | struct WinStdioChardev { |
Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 34 | Chardev parent; |
| 35 | HANDLE hStdIn; |
| 36 | HANDLE hInputReadyEvent; |
| 37 | HANDLE hInputDoneEvent; |
| 38 | HANDLE hInputThread; |
| 39 | uint8_t win_stdio_buf; |
Eduardo Habkost | db1015e | 2020-09-03 16:43:22 -0400 | [diff] [blame] | 40 | }; |
| 41 | typedef struct WinStdioChardev WinStdioChardev; |
Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 42 | |
Eduardo Habkost | 8110fa1 | 2020-08-31 17:07:33 -0400 | [diff] [blame] | 43 | DECLARE_INSTANCE_CHECKER(WinStdioChardev, WIN_STDIO_CHARDEV, |
| 44 | TYPE_CHARDEV_WIN_STDIO) |
Marc-André Lureau | 0e58f17 | 2016-12-12 17:49:52 +0300 | [diff] [blame] | 45 | |
| 46 | static void win_stdio_wait_func(void *opaque) |
| 47 | { |
| 48 | Chardev *chr = CHARDEV(opaque); |
| 49 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque); |
| 50 | INPUT_RECORD buf[4]; |
| 51 | int ret; |
| 52 | DWORD dwSize; |
| 53 | int i; |
| 54 | |
| 55 | ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); |
| 56 | |
| 57 | if (!ret) { |
| 58 | /* Avoid error storm */ |
| 59 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | for (i = 0; i < dwSize; i++) { |
| 64 | KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; |
| 65 | |
| 66 | if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { |
| 67 | int j; |
| 68 | if (kev->uChar.AsciiChar != 0) { |
| 69 | for (j = 0; j < kev->wRepeatCount; j++) { |
| 70 | if (qemu_chr_be_can_write(chr)) { |
| 71 | uint8_t c = kev->uChar.AsciiChar; |
| 72 | qemu_chr_be_write(chr, &c, 1); |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | static DWORD WINAPI win_stdio_thread(LPVOID param) |
| 81 | { |
| 82 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(param); |
| 83 | int ret; |
| 84 | DWORD dwSize; |
| 85 | |
| 86 | while (1) { |
| 87 | |
| 88 | /* Wait for one byte */ |
| 89 | ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); |
| 90 | |
| 91 | /* Exit in case of error, continue if nothing read */ |
| 92 | if (!ret) { |
| 93 | break; |
| 94 | } |
| 95 | if (!dwSize) { |
| 96 | continue; |
| 97 | } |
| 98 | |
| 99 | /* Some terminal emulator returns \r\n for Enter, just pass \n */ |
| 100 | if (stdio->win_stdio_buf == '\r') { |
| 101 | continue; |
| 102 | } |
| 103 | |
| 104 | /* Signal the main thread and wait until the byte was eaten */ |
| 105 | if (!SetEvent(stdio->hInputReadyEvent)) { |
| 106 | break; |
| 107 | } |
| 108 | if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) |
| 109 | != WAIT_OBJECT_0) { |
| 110 | break; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | static void win_stdio_thread_wait_func(void *opaque) |
| 119 | { |
| 120 | Chardev *chr = CHARDEV(opaque); |
| 121 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(opaque); |
| 122 | |
| 123 | if (qemu_chr_be_can_write(chr)) { |
| 124 | qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); |
| 125 | } |
| 126 | |
| 127 | SetEvent(stdio->hInputDoneEvent); |
| 128 | } |
| 129 | |
| 130 | static void qemu_chr_set_echo_win_stdio(Chardev *chr, bool echo) |
| 131 | { |
| 132 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr); |
| 133 | DWORD dwMode = 0; |
| 134 | |
| 135 | GetConsoleMode(stdio->hStdIn, &dwMode); |
| 136 | |
| 137 | if (echo) { |
| 138 | SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); |
| 139 | } else { |
| 140 | SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | static void qemu_chr_open_stdio(Chardev *chr, |
| 145 | ChardevBackend *backend, |
| 146 | bool *be_opened, |
| 147 | Error **errp) |
| 148 | { |
| 149 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(chr); |
| 150 | DWORD dwMode; |
| 151 | int is_console = 0; |
| 152 | |
| 153 | stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); |
| 154 | if (stdio->hStdIn == INVALID_HANDLE_VALUE) { |
| 155 | error_setg(errp, "cannot open stdio: invalid handle"); |
| 156 | return; |
| 157 | } |
| 158 | |
| 159 | is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; |
| 160 | |
| 161 | if (is_console) { |
| 162 | if (qemu_add_wait_object(stdio->hStdIn, |
| 163 | win_stdio_wait_func, chr)) { |
| 164 | error_setg(errp, "qemu_add_wait_object: failed"); |
| 165 | goto err1; |
| 166 | } |
| 167 | } else { |
| 168 | DWORD dwId; |
| 169 | |
| 170 | stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); |
| 171 | stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); |
| 172 | if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE |
| 173 | || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { |
| 174 | error_setg(errp, "cannot create event"); |
| 175 | goto err2; |
| 176 | } |
| 177 | if (qemu_add_wait_object(stdio->hInputReadyEvent, |
| 178 | win_stdio_thread_wait_func, chr)) { |
| 179 | error_setg(errp, "qemu_add_wait_object: failed"); |
| 180 | goto err2; |
| 181 | } |
| 182 | stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, |
| 183 | chr, 0, &dwId); |
| 184 | |
| 185 | if (stdio->hInputThread == INVALID_HANDLE_VALUE) { |
| 186 | error_setg(errp, "cannot create stdio thread"); |
| 187 | goto err3; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | dwMode |= ENABLE_LINE_INPUT; |
| 192 | |
| 193 | if (is_console) { |
| 194 | /* set the terminal in raw mode */ |
| 195 | /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ |
| 196 | dwMode |= ENABLE_PROCESSED_INPUT; |
| 197 | } |
| 198 | |
| 199 | SetConsoleMode(stdio->hStdIn, dwMode); |
| 200 | |
| 201 | qemu_chr_set_echo_win_stdio(chr, false); |
| 202 | |
| 203 | return; |
| 204 | |
| 205 | err3: |
| 206 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); |
| 207 | err2: |
| 208 | CloseHandle(stdio->hInputReadyEvent); |
| 209 | CloseHandle(stdio->hInputDoneEvent); |
| 210 | err1: |
| 211 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); |
| 212 | } |
| 213 | |
| 214 | static void char_win_stdio_finalize(Object *obj) |
| 215 | { |
| 216 | WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj); |
| 217 | |
| 218 | if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { |
| 219 | CloseHandle(stdio->hInputReadyEvent); |
| 220 | } |
| 221 | if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { |
| 222 | CloseHandle(stdio->hInputDoneEvent); |
| 223 | } |
| 224 | if (stdio->hInputThread != INVALID_HANDLE_VALUE) { |
| 225 | TerminateThread(stdio->hInputThread, 0); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | static int win_stdio_write(Chardev *chr, const uint8_t *buf, int len) |
| 230 | { |
| 231 | HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); |
| 232 | DWORD dwSize; |
| 233 | int len1; |
| 234 | |
| 235 | len1 = len; |
| 236 | |
| 237 | while (len1 > 0) { |
| 238 | if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { |
| 239 | break; |
| 240 | } |
| 241 | buf += dwSize; |
| 242 | len1 -= dwSize; |
| 243 | } |
| 244 | |
| 245 | return len - len1; |
| 246 | } |
| 247 | |
| 248 | static void char_win_stdio_class_init(ObjectClass *oc, void *data) |
| 249 | { |
| 250 | ChardevClass *cc = CHARDEV_CLASS(oc); |
| 251 | |
| 252 | cc->open = qemu_chr_open_stdio; |
| 253 | cc->chr_write = win_stdio_write; |
| 254 | cc->chr_set_echo = qemu_chr_set_echo_win_stdio; |
| 255 | } |
| 256 | |
| 257 | static const TypeInfo char_win_stdio_type_info = { |
| 258 | .name = TYPE_CHARDEV_WIN_STDIO, |
| 259 | .parent = TYPE_CHARDEV, |
| 260 | .instance_size = sizeof(WinStdioChardev), |
| 261 | .instance_finalize = char_win_stdio_finalize, |
| 262 | .class_init = char_win_stdio_class_init, |
| 263 | .abstract = true, |
| 264 | }; |
| 265 | |
| 266 | static void register_types(void) |
| 267 | { |
| 268 | type_register_static(&char_win_stdio_type_info); |
| 269 | } |
| 270 | |
| 271 | type_init(register_types); |