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 | struct keyboard_layout *current_layout = NULL;␊ |
29 | int getchar_replacement(void);␊ |
30 | ␊ |
31 | int getchar_replacement(void) {␊ |
32 | ␉int code = bgetc();␊ |
33 | ␉int status = readKeyboardShiftFlags();␊ |
34 | ␉uint8_t scancode = code >> 8;␊ |
35 | ␊ |
36 | ␉// Special scancode sent when alt + some keys are pressed␊ |
37 | ␉if (scancode >= 0x78 && scancode <= 0x83)␊ |
38 | ␉␉scancode -= 0x76;␊ |
39 | ␊ |
40 | ␉if (scancode < KEYBOARD_MAP_SIZE && !(status & (STATUS_LCTRL| STATUS_RCTRL))) {␊ |
41 | ␉␉int key;␊ |
42 | ␉␉if ((status & (STATUS_LALT|STATUS_RALT)) &&␊ |
43 | ␉␉␉(status & (STATUS_LSHIFT|STATUS_RSHIFT|STATUS_CAPS))) {␊ |
44 | ␉␉␉key=current_layout->keyboard_map_shift_alt[scancode];␊ |
45 | ␉␉}␊ |
46 | ␉␉else if (status & (STATUS_LSHIFT|STATUS_RSHIFT|STATUS_CAPS))␊ |
47 | ␉␉␉key=current_layout->keyboard_map_shift[scancode];␊ |
48 | ␉␉else if (status & (STATUS_LALT|STATUS_RALT))␊ |
49 | ␉␉␉key=current_layout->keyboard_map_alt[scancode];␊ |
50 | ␉␉else␊ |
51 | ␉␉␉key=current_layout->keyboard_map[scancode];␊ |
52 | ␊ |
53 | ␉␉if (key != 0) // do the mapping␊ |
54 | ␉␉␉code = key;␊ |
55 | ␉}␊ |
56 | ␊ |
57 | ␉if (ASCII_KEY(code) != 0) // if ascii not null return it␊ |
58 | ␉␉code = ASCII_KEY(code);␊ |
59 | ␊ |
60 | ␉//printf("Code: %04x\n",code);␊ |
61 | ␉return (code);␊ |
62 | }␊ |
63 | ␊ |
64 | static uint32_t load_keyboard_layout_file(const char *filename) {␊ |
65 | ␉int fd;␊ |
66 | ␉char magic[KEYBOARD_LAYOUTS_MAGIC_SIZE];␊ |
67 | ␉uint32_t version;␊ |
68 | ␉␊ |
69 | ␊ |
70 | ␉if ((fd = open_bvdev("bt(0,0)", filename)) < 0) {␉␉␊ |
71 | ␉␉goto fail; // fail␊ |
72 | ␉}␊ |
73 | ␉␊ |
74 | ␉if (read(fd, magic, sizeof(magic)) != sizeof(magic)) {␊ |
75 | ␉␉printf("Can't find magic in keyboard layout file: %s\n", filename);␊ |
76 | ␉␉goto fail;␊ |
77 | ␉}␊ |
78 | ␊ |
79 | ␉if (memcmp (magic, KEYBOARD_LAYOUTS_MAGIC, KEYBOARD_LAYOUTS_MAGIC_SIZE) != 0) {␊ |
80 | ␉␉printf("Invalid magic code in keyboard layout file: %s\n", filename);␊ |
81 | ␉␉goto fail;␊ |
82 | }␊ |
83 | ␊ |
84 | ␉if (read(fd, (char*) &version, sizeof(version)) != sizeof(version)) {␊ |
85 | ␉␉printf("Can't get version of keyboard layout file: %s\n", filename);␊ |
86 | ␉␉goto fail;␊ |
87 | ␉}␊ |
88 | ␉␊ |
89 | ␉if (version != KEYBOARD_LAYOUTS_VERSION) {␊ |
90 | ␉␉verbose("Bad version for keyboard layout file %s expected v%d found v%d\n",␊ |
91 | ␉␉␉ filename, KEYBOARD_LAYOUTS_VERSION, version);␊ |
92 | ␉␉goto fail;␊ |
93 | ␉}␊ |
94 | ␉␊ |
95 | ␉if (current_layout)␊ |
96 | ␉␉free(current_layout);␊ |
97 | ␉␉␊ |
98 | ␉current_layout = malloc(sizeof(*current_layout));␊ |
99 | ␉if (!current_layout)␊ |
100 | ␉␉goto fail;␊ |
101 | ␊ |
102 | ␉b_lseek(fd, KEYBOARD_LAYOUTS_MAP_OFFSET, 0);␊ |
103 | ␉␊ |
104 | ␉if (read(fd, (char*) current_layout, sizeof(*current_layout)) != sizeof(*current_layout)) {␊ |
105 | ␉␉printf("Wrong keyboard layout file %s size\n", filename);␊ |
106 | ␉␉goto fail;␊ |
107 | ␉}␊ |
108 | ␉␊ |
109 | ␉close(fd);␊ |
110 | ␉␊ |
111 | ␉return 1;␊ |
112 | ␉␉␊ |
113 | fail:␊ |
114 | ␊ |
115 | ␉if (current_layout) {␊ |
116 | ␉␉free(current_layout);␊ |
117 | ␉␉current_layout = NULL;␊ |
118 | ␉}␊ |
119 | ␉return 0;␊ |
120 | }␊ |
121 | ␊ |
122 | uint32_t Keylayout_real_start(void)␊ |
123 | {␊ |
124 | ␉char layoutPath[512];␊ |
125 | ␉const char␉*val;␊ |
126 | ␉int␉␉␉len;␊ |
127 | ␉␊ |
128 | ␉if (getValueForKey("KeyLayout", &val, &len, DEFAULT_BOOT_CONFIG))␊ |
129 | ␉{␊ |
130 | ␉␉sprintf(layoutPath, "/Extra/Keymaps/%s", val);␊ |
131 | ␉␉// Add the extension if needed␊ |
132 | ␉␉if (len <= 4 || strcmp(val+len-4,".lyt") != 0)␊ |
133 | ␉␉␉strlcat(layoutPath, ".lyt", sizeof(layoutPath));␊ |
134 | ␊ |
135 | ␉␉if (!load_keyboard_layout_file(layoutPath))␊ |
136 | ␉␉{␊ |
137 | ␉␉␉DBG("Can't load %s keyboard layout file. Keylayout will not be used !\n",␊ |
138 | ␉␉␉␉ layoutPath);␊ |
139 | ␉␉␉return 0;␊ |
140 | ␉␉} ␊ |
141 | ␉␉␊ |
142 | ␊ |
143 | ␉␉if (replace_system_function("_getc", &getchar_replacement) != EFI_SUCCESS ) ␊ |
144 | ␉␉{␊ |
145 | ␉␉␉printf("no function getc() to replace. Keylayout will not be used ! \n");␊ |
146 | ␉␉␉return 0;␊ |
147 | ␉␉}␊ |
148 | ␉␉␊ |
149 | ␉␉return 1;␊ |
150 | ␉␉␊ |
151 | ␉}␊ |
152 | ␉return 0;␊ |
153 | }␊ |
154 | ␊ |
155 | void Keylayout_start(void);␊ |
156 | void Keylayout_start(void)␊ |
157 | {␊ |
158 | ␉Keylayout_real_start();␊ |
159 | } |