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1 | #include <stdio.h> |
2 | #include <string.h> |
3 | #include <pthread.h> |
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4 | |
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5 | #include <dlfcn.h> |
6 | #include <X11/Xlib.h> |
7 | #include <X11/Xutil.h> |
8 | |
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9 | #include <sys/types.h> |
10 | #include <sys/stat.h> |
11 | #include <fcntl.h> |
12 | #include <unistd.h> |
13 | #include <sys/ioctl.h> |
14 | #include <termios.h> |
15 | #include <linux/kd.h> |
16 | |
17 | #define PFX "oshide: " |
18 | #define TERMIOS_DUMP_FILE "/tmp/pico_tios" |
19 | |
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20 | #define FPTR(f) typeof(f) * p##f |
21 | #define FPTR_LINK(xf, dl, f) { \ |
22 | xf.p##f = dlsym(dl, #f); \ |
23 | if (xf.p##f == NULL) { \ |
24 | fprintf(stderr, "missing symbol: %s\n", #f); \ |
25 | goto fail; \ |
26 | } \ |
27 | } |
28 | |
29 | struct xfuncs { |
30 | FPTR(XCreateBitmapFromData); |
31 | FPTR(XCreatePixmapCursor); |
32 | FPTR(XFreePixmap); |
33 | FPTR(XOpenDisplay); |
34 | FPTR(XDisplayName); |
35 | FPTR(XCloseDisplay); |
36 | FPTR(XCreateSimpleWindow); |
37 | FPTR(XChangeWindowAttributes); |
38 | FPTR(XSelectInput); |
39 | FPTR(XMapWindow); |
40 | FPTR(XNextEvent); |
41 | FPTR(XCheckTypedEvent); |
42 | FPTR(XUnmapWindow); |
43 | FPTR(XGrabKeyboard); |
44 | }; |
45 | |
46 | |
47 | static Cursor transparent_cursor(struct xfuncs *xf, Display *display, Window win) |
48 | { |
49 | Cursor cursor; |
50 | Pixmap pix; |
51 | XColor dummy; |
52 | char d = 0; |
53 | |
54 | memset(&dummy, 0, sizeof(dummy)); |
55 | pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1); |
56 | cursor = xf->pXCreatePixmapCursor(display, pix, pix, |
57 | &dummy, &dummy, 0, 0); |
58 | xf->pXFreePixmap(display, pix); |
59 | return cursor; |
60 | } |
61 | |
62 | static void *x11h_handler(void *arg) |
63 | { |
64 | struct xfuncs xf; |
65 | unsigned int display_width, display_height; |
66 | XSetWindowAttributes attributes; |
67 | Window win; |
68 | XEvent report; |
69 | Display *display; |
70 | Visual *visual; |
71 | void *x11lib; |
72 | int screen; |
73 | |
74 | memset(&xf, 0, sizeof(xf)); |
75 | x11lib = dlopen("libX11.so.6", RTLD_LAZY); |
76 | if (x11lib == NULL) { |
77 | fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror()); |
78 | goto fail; |
79 | } |
80 | FPTR_LINK(xf, x11lib, XCreateBitmapFromData); |
81 | FPTR_LINK(xf, x11lib, XCreatePixmapCursor); |
82 | FPTR_LINK(xf, x11lib, XFreePixmap); |
83 | FPTR_LINK(xf, x11lib, XOpenDisplay); |
84 | FPTR_LINK(xf, x11lib, XDisplayName); |
85 | FPTR_LINK(xf, x11lib, XCloseDisplay); |
86 | FPTR_LINK(xf, x11lib, XCreateSimpleWindow); |
87 | FPTR_LINK(xf, x11lib, XChangeWindowAttributes); |
88 | FPTR_LINK(xf, x11lib, XSelectInput); |
89 | FPTR_LINK(xf, x11lib, XMapWindow); |
90 | FPTR_LINK(xf, x11lib, XNextEvent); |
91 | FPTR_LINK(xf, x11lib, XCheckTypedEvent); |
92 | FPTR_LINK(xf, x11lib, XUnmapWindow); |
93 | FPTR_LINK(xf, x11lib, XGrabKeyboard); |
94 | |
95 | //XInitThreads(); |
96 | |
97 | display = xf.pXOpenDisplay(NULL); |
98 | if (display == NULL) |
99 | { |
100 | fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n", |
101 | xf.pXDisplayName(NULL)); |
102 | goto fail2; |
103 | } |
104 | |
105 | visual = DefaultVisual(display, 0); |
106 | if (visual->class != TrueColor) |
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107 | fprintf(stderr, PFX "warning: non true color visual\n"); |
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108 | |
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109 | printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display), |
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110 | VendorRelease(display), DisplayString(display), ProtocolVersion(display), |
111 | ProtocolRevision(display)); |
112 | |
113 | screen = DefaultScreen(display); |
114 | |
115 | display_width = DisplayWidth(display, screen); |
116 | display_height = DisplayHeight(display, screen); |
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117 | printf(PFX "display is %dx%d\n", display_width, display_height); |
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118 | |
119 | win = xf.pXCreateSimpleWindow(display, |
120 | RootWindow(display, screen), |
121 | 0, 0, display_width, display_height, 0, |
122 | BlackPixel(display, screen), |
123 | BlackPixel(display, screen)); |
124 | |
125 | attributes.override_redirect = True; |
126 | attributes.cursor = transparent_cursor(&xf, display, win); |
127 | xf.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes); |
128 | |
129 | xf.pXSelectInput(display, win, ExposureMask | FocusChangeMask | KeyPressMask | KeyReleaseMask); |
130 | xf.pXMapWindow(display, win); |
131 | xf.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime); |
132 | // XSetIOErrorHandler |
133 | |
134 | while (1) |
135 | { |
136 | xf.pXNextEvent(display, &report); |
137 | switch (report.type) |
138 | { |
139 | case Expose: |
140 | while (xf.pXCheckTypedEvent(display, Expose, &report)) |
141 | ; |
142 | break; |
143 | |
144 | case FocusOut: |
145 | // XFocusChangeEvent |
146 | // printf("focus out\n"); |
147 | // xf.pXUnmapWindow(display, win); |
148 | break; |
149 | |
150 | case KeyPress: |
151 | // printf("press %d\n", report.xkey.keycode); |
152 | break; |
153 | |
154 | default: |
155 | break; |
156 | } |
157 | } |
158 | |
159 | fail2: |
160 | dlclose(x11lib); |
161 | fail: |
162 | fprintf(stderr, "x11 handling disabled.\n"); |
163 | return NULL; |
164 | } |
165 | |
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166 | static struct termios g_kbd_termios_saved; |
167 | static int g_kbdfd; |
168 | |
169 | static void hidecon_start(void) |
170 | { |
171 | struct termios kbd_termios; |
172 | FILE *tios_f; |
173 | int mode; |
174 | |
175 | g_kbdfd = open("/dev/tty", O_RDWR); |
176 | if (g_kbdfd == -1) { |
177 | perror(PFX "open /dev/tty"); |
178 | return; |
179 | } |
180 | |
181 | if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) { |
182 | perror(PFX "(not hiding FB): KDGETMODE"); |
183 | goto fail; |
184 | } |
185 | |
186 | if (tcgetattr(g_kbdfd, &kbd_termios) == -1) { |
187 | perror(PFX "tcgetattr"); |
188 | goto fail; |
189 | } |
190 | |
191 | /* dump for picorestore */ |
192 | g_kbd_termios_saved = kbd_termios; |
193 | tios_f = fopen(TERMIOS_DUMP_FILE, "wb"); |
194 | if (tios_f) { |
195 | fwrite(&kbd_termios, sizeof(kbd_termios), 1, tios_f); |
196 | fclose(tios_f); |
197 | } |
198 | |
199 | kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG); |
200 | kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON); |
201 | kbd_termios.c_cc[VMIN] = 0; |
202 | kbd_termios.c_cc[VTIME] = 0; |
203 | |
204 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) { |
205 | perror(PFX "tcsetattr"); |
206 | goto fail; |
207 | } |
208 | |
209 | if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) { |
210 | perror(PFX "KDSETMODE KD_GRAPHICS"); |
211 | tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved); |
212 | goto fail; |
213 | } |
214 | |
215 | return; |
216 | |
217 | fail: |
218 | close(g_kbdfd); |
219 | g_kbdfd = -1; |
220 | } |
221 | |
222 | static void hidecon_end(void) |
223 | { |
224 | if (g_kbdfd < 0) |
225 | return; |
226 | |
227 | if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1) |
228 | perror(PFX "KDSETMODE KD_TEXT"); |
229 | |
230 | if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1) |
231 | perror(PFX "tcsetattr"); |
232 | |
233 | remove(TERMIOS_DUMP_FILE); |
234 | |
235 | close(g_kbdfd); |
236 | g_kbdfd = -1; |
237 | } |
238 | |
239 | int oshide_init(void) |
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240 | { |
241 | pthread_t tid; |
242 | int ret; |
243 | |
244 | ret = pthread_create(&tid, NULL, x11h_handler, NULL); |
245 | if (ret != 0) { |
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246 | fprintf(stderr, PFX "failed to create thread: %d\n", ret); |
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247 | return ret; |
248 | } |
249 | pthread_detach(tid); |
250 | |
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251 | hidecon_start(); |
252 | |
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253 | return 0; |
254 | } |
255 | |
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256 | void oshide_finish(void) |
257 | { |
258 | /* XXX: the X thread.. */ |
259 | |
260 | hidecon_end(); |
261 | } |
262 | |
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263 | #if 0 |
264 | int main() |
265 | { |
266 | x11h_init(); |
267 | sleep(5); |
268 | } |
269 | #endif |