| 1 | /*␊ |
| 2 | * Keymapper.c␊ |
| 3 | * Chameleon␊ |
| 4 | *␊ |
| 5 | * Created by JrCs on 28/08/11.␊ |
| 6 | * Copyright 2011. All rights reserved.␊ |
| 7 | *␊ |
| 8 | */␊ |
| 9 | ␊ |
| 10 | #include "libsaio.h"␊ |
| 11 | #include "term.h"␊ |
| 12 | #include "modules.h"␊ |
| 13 | #include "Keylayout.h"␊ |
| 14 | #include "bootstruct.h"␊ |
| 15 | ␊ |
| 16 | #ifndef DEBUG_KLAYOUT␊ |
| 17 | #define DEBUG_KLAYOUT 0␊ |
| 18 | #endif␊ |
| 19 | ␊ |
| 20 | #if DEBUG_KLAYOUT␊ |
| 21 | #define DBG(x...)␉printf(x)␊ |
| 22 | #else␊ |
| 23 | #define DBG(x...)␊ |
| 24 | #endif␊ |
| 25 | ␊ |
| 26 | #define kKeyboardLayout "KeyboardLayout"␊ |
| 27 | ␊ |
| 28 | //==========================================================================␊ |
| 29 | // lseek() - Reposition the byte offset of the file descriptor from the␊ |
| 30 | // beginning of the file. Returns the relocated offset.␊ |
| 31 | ␊ |
| 32 | int key_b_lseek(int fdesc, int offset, int ptr)␊ |
| 33 | {␊ |
| 34 | struct iob * io;␊ |
| 35 | ␉␊ |
| 36 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
| 37 | return (-1);␊ |
| 38 | ␉␊ |
| 39 | io->i_offset = offset;␊ |
| 40 | ␉␊ |
| 41 | return offset;␊ |
| 42 | }␊ |
| 43 | ␊ |
| 44 | struct keyboard_layout *current_layout = NULL;␊ |
| 45 | int getchar_replacement(void);␊ |
| 46 | ␊ |
| 47 | int getchar_replacement(void) {␊ |
| 48 | ␉int code = bgetc();␊ |
| 49 | ␉int status = readKeyboardShiftFlags();␊ |
| 50 | ␉uint8_t scancode = code >> 8;␊ |
| 51 | ␉␊ |
| 52 | ␉// Special scancode sent when alt + some keys are pressed␊ |
| 53 | ␉if (scancode >= 0x78 && scancode <= 0x83)␊ |
| 54 | ␉␉scancode -= 0x76;␊ |
| 55 | ␉␊ |
| 56 | ␉if (scancode < KEYBOARD_MAP_SIZE && !(status & (STATUS_LCTRL| STATUS_RCTRL))) {␊ |
| 57 | ␉␉int key;␊ |
| 58 | ␉␉if ((status & (STATUS_LALT|STATUS_RALT)) &&␊ |
| 59 | ␉␉␉(status & (STATUS_LSHIFT|STATUS_RSHIFT|STATUS_CAPS))) {␊ |
| 60 | ␉␉␉key=current_layout->keyboard_map_shift_alt[scancode];␊ |
| 61 | ␉␉}␊ |
| 62 | ␉␉else if (status & (STATUS_LSHIFT|STATUS_RSHIFT|STATUS_CAPS))␊ |
| 63 | ␉␉␉key=current_layout->keyboard_map_shift[scancode];␊ |
| 64 | ␉␉else if (status & (STATUS_LALT|STATUS_RALT))␊ |
| 65 | ␉␉␉key=current_layout->keyboard_map_alt[scancode];␊ |
| 66 | ␉␉else␊ |
| 67 | ␉␉␉key=current_layout->keyboard_map[scancode];␊ |
| 68 | ␉␉␊ |
| 69 | ␉␉if (key != 0) // do the mapping␊ |
| 70 | ␉␉␉code = key;␊ |
| 71 | ␉}␊ |
| 72 | ␉␊ |
| 73 | ␉if (ASCII_KEY(code) != 0) // if ascii not null return it␊ |
| 74 | ␉␉code = ASCII_KEY(code);␊ |
| 75 | ␉␊ |
| 76 | ␉//printf("Code: %04x\n",code);␊ |
| 77 | ␉return (code);␊ |
| 78 | }␊ |
| 79 | ␊ |
| 80 | static uint32_t load_keyboard_layout_file(const char *filename) {␊ |
| 81 | ␉int fd;␊ |
| 82 | ␉char magic[KEYBOARD_LAYOUTS_MAGIC_SIZE];␊ |
| 83 | ␉uint32_t version;␊ |
| 84 | ␉␊ |
| 85 | ␉␊ |
| 86 | ␉if ((fd = open_bvdev("bt(0,0)", filename)) < 0) {␉␉␊ |
| 87 | ␉␉goto fail; // fail␊ |
| 88 | ␉}␊ |
| 89 | ␉␊ |
| 90 | ␉if (read(fd, magic, sizeof(magic)) != sizeof(magic)) {␊ |
| 91 | ␉␉printf("Can't find magic in keyboard layout file: %s\n", filename);␊ |
| 92 | ␉␉goto fail;␊ |
| 93 | ␉}␊ |
| 94 | ␉␊ |
| 95 | ␉if (memcmp (magic, KEYBOARD_LAYOUTS_MAGIC, KEYBOARD_LAYOUTS_MAGIC_SIZE) != 0) {␊ |
| 96 | ␉␉printf("Invalid magic code in keyboard layout file: %s\n", filename);␊ |
| 97 | ␉␉goto fail;␊ |
| 98 | }␊ |
| 99 | ␉␊ |
| 100 | ␉if (read(fd, (char*) &version, sizeof(version)) != sizeof(version)) {␊ |
| 101 | ␉␉printf("Can't get version of keyboard layout file: %s\n", filename);␊ |
| 102 | ␉␉goto fail;␊ |
| 103 | ␉}␊ |
| 104 | ␉␊ |
| 105 | ␉if (version != KEYBOARD_LAYOUTS_VERSION) {␊ |
| 106 | ␉␉verbose("Bad version for keyboard layout file %s expected v%d found v%d\n",␊ |
| 107 | ␉␉␉␉filename, KEYBOARD_LAYOUTS_VERSION, version);␊ |
| 108 | ␉␉goto fail;␊ |
| 109 | ␉}␊ |
| 110 | ␉␊ |
| 111 | ␉if (current_layout)␊ |
| 112 | ␉␉free(current_layout);␊ |
| 113 | ␉␊ |
| 114 | ␉current_layout = malloc(sizeof(struct keyboard_layout));␊ |
| 115 | ␉if (!current_layout)␊ |
| 116 | ␉␉goto fail;␊ |
| 117 | ␉bzero(current_layout,sizeof(struct keyboard_layout));␊ |
| 118 | ␉␊ |
| 119 | ␉key_b_lseek(fd, KEYBOARD_LAYOUTS_MAP_OFFSET, 0);␊ |
| 120 | ␉␊ |
| 121 | ␉if (read(fd, (char*) current_layout, sizeof(struct keyboard_layout)) != sizeof(struct keyboard_layout)) {␊ |
| 122 | ␉␉printf("Wrong keyboard layout file %s size\n", filename);␊ |
| 123 | ␉␉goto fail;␊ |
| 124 | ␉}␊ |
| 125 | ␉␊ |
| 126 | ␉close(fd);␊ |
| 127 | ␉␊ |
| 128 | ␉return 1;␊ |
| 129 | ␉␊ |
| 130 | fail:␊ |
| 131 | ␊ |
| 132 | ␉if (current_layout) {␊ |
| 133 | ␉␉free(current_layout);␊ |
| 134 | ␉␉current_layout = NULL;␊ |
| 135 | ␉}␊ |
| 136 | ␉return 0;␊ |
| 137 | }␊ |
| 138 | ␊ |
| 139 | uint32_t Keylayout_real_start(void)␊ |
| 140 | {␊ |
| 141 | ␉char layoutPath[512];␊ |
| 142 | ␉const char␉*val;␊ |
| 143 | ␉int␉␉␉len;␊ |
| 144 | ␉␊ |
| 145 | ␉if (getValueForKey("KeyLayout", &val, &len, DEFAULT_BOOT_CONFIG))␊ |
| 146 | ␉{␊ |
| 147 | ␉␉snprintf(layoutPath, sizeof(layoutPath),"/Extra/Keymaps/%s", val);␊ |
| 148 | ␉␉// Add the extension if needed␊ |
| 149 | ␉␉if (len <= 4 || strncmp(val+len-4,".lyt", sizeof(".lyt")) != 0)␊ |
| 150 | ␉␉␉strlcat(layoutPath, ".lyt", sizeof(layoutPath));␊ |
| 151 | ␉␉␊ |
| 152 | ␉␉if (!load_keyboard_layout_file(layoutPath))␊ |
| 153 | ␉␉{␊ |
| 154 | ␉␉␉DBG("Can't load %s keyboard layout file. Keylayout will not be used !\n",␊ |
| 155 | ␉␉␉␉layoutPath);␊ |
| 156 | ␉␉␉return 0;␊ |
| 157 | ␉␉} ␊ |
| 158 | ␉␉␊ |
| 159 | ␉␉␊ |
| 160 | ␉␉if (replace_system_function("_getc", &getchar_replacement) != EFI_SUCCESS ) ␊ |
| 161 | ␉␉{␊ |
| 162 | ␉␉␉printf("no function getc() to replace. Keylayout will not be used ! \n");␊ |
| 163 | ␉␉␉return 0;␊ |
| 164 | ␉␉}␊ |
| 165 | ␉␉␊ |
| 166 | ␉␉return 1;␊ |
| 167 | ␉␉␊ |
| 168 | ␉}␊ |
| 169 | ␉return 0;␊ |
| 170 | }␊ |
| 171 | ␊ |
| 172 | void Keylayout_start(void);␊ |
| 173 | void Keylayout_start(void)␊ |
| 174 | {␊ |
| 175 | ␉Keylayout_real_start();␊ |
| 176 | } |
