| 1 | /* |
| 2 | Copyright (c) 2001 by Juliusz Chroboczek |
| 3 | Copyright (c) 1999 by Keith Packard |
| 4 | |
| 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | of this software and associated documentation files (the "Software"), to deal |
| 7 | in the Software without restriction, including without limitation the rights |
| 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | copies of the Software, and to permit persons to whom the Software is |
| 10 | furnished to do so, subject to the following conditions: |
| 11 | |
| 12 | The above copyright notice and this permission notice shall be included in |
| 13 | all copies or substantial portions of the Software. |
| 14 | |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 21 | THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #ifdef HAVE_CONFIG_H |
| 25 | #include <kdrive-config.h> |
| 26 | #endif |
| 27 | #include <errno.h> |
| 28 | #include <termios.h> |
| 29 | #include <X11/X.h> |
| 30 | #include <X11/Xproto.h> |
| 31 | #include <X11/Xpoll.h> |
| 32 | #include "inputstr.h" |
| 33 | #include "scrnintstr.h" |
| 34 | #include "kdrive.h" |
| 35 | |
| 36 | static int |
| 37 | MsReadBytes(int fd, char *buf, int len, int min) |
| 38 | { |
| 39 | int n, tot; |
| 40 | fd_set set; |
| 41 | struct timeval tv; |
| 42 | |
| 43 | tot = 0; |
| 44 | while (len) { |
| 45 | n = read(fd, buf, len); |
| 46 | if (n > 0) { |
| 47 | tot += n; |
| 48 | buf += n; |
| 49 | len -= n; |
| 50 | } |
| 51 | if (tot % min == 0) |
| 52 | break; |
| 53 | FD_ZERO(&set); |
| 54 | FD_SET(fd, &set); |
| 55 | tv.tv_sec = 0; |
| 56 | tv.tv_usec = 100 * 1000; |
| 57 | n = select(fd + 1, &set, 0, 0, &tv); |
| 58 | if (n <= 0) |
| 59 | break; |
| 60 | } |
| 61 | return tot; |
| 62 | } |
| 63 | |
| 64 | static void |
| 65 | MsRead(int port, void *closure) |
| 66 | { |
| 67 | unsigned char buf[3 * 200]; |
| 68 | unsigned char *b; |
| 69 | int n; |
| 70 | int dx, dy; |
| 71 | unsigned long flags; |
| 72 | |
| 73 | while ((n = MsReadBytes(port, (char *) buf, sizeof(buf), 3)) > 0) { |
| 74 | b = buf; |
| 75 | while (n >= 3) { |
| 76 | flags = KD_MOUSE_DELTA; |
| 77 | |
| 78 | if (b[0] & 0x20) |
| 79 | flags |= KD_BUTTON_1; |
| 80 | if (b[0] & 0x10) |
| 81 | flags |= KD_BUTTON_3; |
| 82 | |
| 83 | dx = (char) (((b[0] & 0x03) << 6) | (b[1] & 0x3F)); |
| 84 | dy = (char) (((b[0] & 0x0C) << 4) | (b[2] & 0x3F)); |
| 85 | n -= 3; |
| 86 | b += 3; |
| 87 | KdEnqueuePointerEvent(closure, flags, dx, dy, 0); |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | static Status |
| 93 | MsInit(KdPointerInfo * pi) |
| 94 | { |
| 95 | if (!pi) |
| 96 | return BadImplementation; |
| 97 | |
| 98 | if (!pi->path || strcmp(pi->path, "auto")) |
| 99 | pi->path = strdup("/dev/mouse"); |
| 100 | if (!pi->name) |
| 101 | pi->name = strdup("Microsoft protocol mouse"); |
| 102 | |
| 103 | return Success; |
| 104 | } |
| 105 | |
| 106 | static Status |
| 107 | MsEnable(KdPointerInfo * pi) |
| 108 | { |
| 109 | int port; |
| 110 | struct termios t; |
| 111 | int ret; |
| 112 | |
| 113 | port = open(pi->path, O_RDWR | O_NONBLOCK); |
| 114 | if (port < 0) { |
| 115 | ErrorF("Couldn't open %s (%d)\n", pi->path, (int) errno); |
| 116 | return 0; |
| 117 | } |
| 118 | else if (port == 0) { |
| 119 | ErrorF("Opening %s returned 0! Please complain to Keith.\n", pi->path); |
| 120 | goto bail; |
| 121 | } |
| 122 | |
| 123 | if (!isatty(port)) { |
| 124 | ErrorF("%s is not a tty\n", pi->path); |
| 125 | goto bail; |
| 126 | } |
| 127 | |
| 128 | ret = tcgetattr(port, &t); |
| 129 | if (ret < 0) { |
| 130 | ErrorF("Couldn't tcgetattr(%s): %d\n", pi->path, errno); |
| 131 | goto bail; |
| 132 | } |
| 133 | t.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | |
| 134 | IGNCR | ICRNL | IXON | IXOFF); |
| 135 | t.c_oflag &= ~OPOST; |
| 136 | t.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); |
| 137 | t.c_cflag &= ~(CSIZE | PARENB); |
| 138 | t.c_cflag |= CS8 | CLOCAL | CSTOPB; |
| 139 | |
| 140 | cfsetispeed(&t, B1200); |
| 141 | cfsetospeed(&t, B1200); |
| 142 | t.c_cc[VMIN] = 1; |
| 143 | t.c_cc[VTIME] = 0; |
| 144 | ret = tcsetattr(port, TCSANOW, &t); |
| 145 | if (ret < 0) { |
| 146 | ErrorF("Couldn't tcsetattr(%s): %d\n", pi->path, errno); |
| 147 | goto bail; |
| 148 | } |
| 149 | if (KdRegisterFd(port, MsRead, pi)) |
| 150 | return TRUE; |
| 151 | pi->driverPrivate = (void *) (intptr_t) port; |
| 152 | |
| 153 | return Success; |
| 154 | |
| 155 | bail: |
| 156 | close(port); |
| 157 | return BadMatch; |
| 158 | } |
| 159 | |
| 160 | static void |
| 161 | MsDisable(KdPointerInfo * pi) |
| 162 | { |
| 163 | KdUnregisterFd(pi, (int) (intptr_t) pi->driverPrivate, TRUE); |
| 164 | } |
| 165 | |
| 166 | static void |
| 167 | MsFini(KdPointerInfo * pi) |
| 168 | { |
| 169 | } |
| 170 | |
| 171 | KdPointerDriver MsMouseDriver = { |
| 172 | "ms", |
| 173 | MsInit, |
| 174 | MsEnable, |
| 175 | MsDisable, |
| 176 | MsFini, |
| 177 | NULL, |
| 178 | }; |