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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * Copyright (c) 2008 Martin Decky
  4.  * Copyright (c) 2008 Pavel Rimsky
  5.  * All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  10.  *
  11.  * - Redistributions of source code must retain the above copyright
  12.  *   notice, this list of conditions and the following disclaimer.
  13.  * - Redistributions in binary form must reproduce the above copyright
  14.  *   notice, this list of conditions and the following disclaimer in the
  15.  *   documentation and/or other materials provided with the distribution.
  16.  * - The name of the author may not be used to endorse or promote products
  17.  *   derived from this software without specific prior written permission.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  */
  30.  
  31. /**
  32.  * @defgroup serial Serial console
  33.  * @brief    Serial console services (putc, puts, clear screen, cursor goto,...)
  34.  * @{
  35.  */
  36.  
  37. /** @file
  38.  */
  39.  
  40. #include <stdio.h>
  41. #include <ipc/ipc.h>
  42. #include <async.h>
  43. #include <ipc/fb.h>
  44. #include <bool.h>
  45. #include <errno.h>
  46. #include <io/color.h>
  47. #include <io/style.h>
  48. #include <string.h>
  49.  
  50. #include "../console/screenbuffer.h"
  51. #include "main.h"
  52. #include "serial_console.h"
  53.  
  54. #define MAX_CONTROL 20
  55.  
  56. static void serial_sgr(const unsigned int mode);
  57. void serial_putchar(wchar_t ch);
  58.  
  59. static int scr_width;
  60. static int scr_height;
  61. static bool color = true;   /** True if producing color output. */
  62. static bool utf8 = false;   /** True if producing UTF8 output. */
  63. static putc_function_t putc_function;
  64.  
  65. /* Allow only 1 connection */
  66. static int client_connected = 0;
  67.  
  68. enum sgr_color_index {
  69.     CI_BLACK    = 0,
  70.     CI_RED      = 1,
  71.     CI_GREEN    = 2,
  72.     CI_BROWN    = 3,
  73.     CI_BLUE     = 4,
  74.     CI_MAGENTA  = 5,
  75.     CI_CYAN     = 6,
  76.     CI_WHITE    = 7,
  77. };
  78.  
  79. enum sgr_command {
  80.     SGR_RESET   = 0,
  81.     SGR_BOLD    = 1,
  82.     SGR_BLINK   = 5,
  83.     SGR_REVERSE = 7,
  84.     SGR_NORMAL_INT  = 22,
  85.     SGR_BLINK_OFF   = 25,
  86.     SGR_REVERSE_OFF = 27,
  87.     SGR_FGCOLOR = 30,
  88.     SGR_BGCOLOR = 40
  89. };
  90.  
  91. static int color_map[] = {
  92.     [COLOR_BLACK]   = CI_BLACK,
  93.     [COLOR_BLUE]    = CI_RED,
  94.     [COLOR_GREEN]   = CI_GREEN,
  95.     [COLOR_CYAN]    = CI_CYAN,
  96.     [COLOR_RED] = CI_RED,
  97.     [COLOR_MAGENTA] = CI_MAGENTA,
  98.     [COLOR_YELLOW]  = CI_BROWN,
  99.     [COLOR_WHITE]   = CI_WHITE
  100. };
  101.  
  102. void serial_puts(char *str)
  103. {
  104.     while (*str)
  105.         putc_function(*(str++));
  106. }
  107.  
  108. void serial_putchar(wchar_t ch)
  109. {
  110.     uint8_t buf[STR_BOUNDS(1)];
  111.     size_t offs;
  112.     size_t i;
  113.  
  114.     if (utf8 != true) {
  115.         if (ch >= 0 && ch < 128)
  116.             (*putc_function)((uint8_t) ch);
  117.         else
  118.             (*putc_function)('?');
  119.         return;
  120.     }
  121.  
  122.     offs = 0;
  123.     if (chr_encode(ch, buf, &offs, STR_BOUNDS(1)) == EOK) {
  124.         for (i = 0; i < offs; i++)
  125.             (*putc_function)(buf[i]);
  126.     } else {
  127.         (*putc_function)('?');
  128.     }
  129.  
  130. }
  131.  
  132. void serial_goto(const unsigned int col, const unsigned int row)
  133. {
  134.     if ((col > scr_width) || (row > scr_height))
  135.         return;
  136.    
  137.     char control[MAX_CONTROL];
  138.     snprintf(control, MAX_CONTROL, "\033[%u;%uf", row + 1, col + 1);
  139.     serial_puts(control);
  140. }
  141.  
  142. void serial_clrscr(void)
  143. {
  144.     /* Initialize graphic rendition attributes. */
  145.     serial_sgr(SGR_RESET);
  146.     if (color) {
  147.         serial_sgr(SGR_FGCOLOR + CI_BLACK);
  148.         serial_sgr(SGR_BGCOLOR + CI_WHITE);
  149.     }
  150.  
  151.     serial_puts("\033[2J");
  152. }
  153.  
  154. void serial_scroll(int i)
  155. {
  156.     if (i > 0) {
  157.         serial_goto(0, scr_height - 1);
  158.         while (i--)
  159.             serial_puts("\033D");
  160.     } else if (i < 0) {
  161.         serial_goto(0, 0);
  162.         while (i++)
  163.             serial_puts("\033M");
  164.     }
  165. }
  166.  
  167. /** ECMA-48 Set Graphics Rendition. */
  168. static void serial_sgr(const unsigned int mode)
  169. {
  170.     char control[MAX_CONTROL];
  171.     snprintf(control, MAX_CONTROL, "\033[%um", mode);
  172.     serial_puts(control);
  173. }
  174.  
  175. /** Set scrolling region. */
  176. void serial_set_scroll_region(unsigned last_row)
  177. {
  178.     char control[MAX_CONTROL];
  179.     snprintf(control, MAX_CONTROL, "\033[0;%ur", last_row);
  180.     serial_puts(control);
  181. }
  182.  
  183. void serial_cursor_disable(void)
  184. {
  185.     serial_puts("\033[?25l");
  186. }
  187.  
  188. void serial_cursor_enable(void)
  189. {
  190.     serial_puts("\033[?25h");
  191. }
  192.  
  193. void serial_console_init(putc_function_t putc_fn, uint32_t w, uint32_t h)
  194. {
  195.     scr_width = w;
  196.     scr_height = h;
  197.     putc_function = putc_fn;
  198. }
  199.  
  200. static void serial_set_style(int style)
  201. {
  202.     if (style == STYLE_EMPHASIS) {
  203.         if (color) {
  204.             serial_sgr(SGR_RESET);
  205.             serial_sgr(SGR_FGCOLOR + CI_RED);
  206.             serial_sgr(SGR_BGCOLOR + CI_WHITE);
  207.         }
  208.         serial_sgr(SGR_BOLD);
  209.     } else {
  210.         if (color) {
  211.             serial_sgr(SGR_RESET);
  212.             serial_sgr(SGR_FGCOLOR + CI_BLACK);
  213.             serial_sgr(SGR_BGCOLOR + CI_WHITE);
  214.         }
  215.         serial_sgr(SGR_NORMAL_INT);
  216.     }
  217. }
  218.  
  219. static void serial_set_idx(unsigned fgcolor, unsigned bgcolor,
  220.     unsigned flags)
  221. {
  222.     if (color) {
  223.         serial_sgr(SGR_RESET);
  224.         serial_sgr(SGR_FGCOLOR + color_map[fgcolor]);
  225.         serial_sgr(SGR_BGCOLOR + color_map[bgcolor]);
  226.     } else {
  227.         if (fgcolor < bgcolor)
  228.             serial_sgr(SGR_RESET);
  229.         else
  230.             serial_sgr(SGR_REVERSE);
  231.     }  
  232. }
  233.  
  234. static void serial_set_rgb(uint32_t fgcolor, uint32_t bgcolor)
  235. {
  236.     if (fgcolor < bgcolor)
  237.         serial_sgr(SGR_REVERSE_OFF);
  238.     else
  239.         serial_sgr(SGR_REVERSE);
  240. }
  241.  
  242. static void serial_set_attrs(const attrs_t *a)
  243. {
  244.     switch (a->t) {
  245.     case at_style:
  246.         serial_set_style(a->a.s.style);
  247.         break;
  248.     case at_rgb:
  249.         serial_set_rgb(a->a.r.fg_color, a->a.r.bg_color);
  250.         break;
  251.     case at_idx:
  252.         serial_set_idx(a->a.i.fg_color,
  253.             a->a.i.bg_color, a->a.i.flags);
  254.         break;
  255.     default:
  256.         break;
  257.     }
  258. }
  259.  
  260. /** Draw text data to viewport.
  261.  *
  262.  * @param vport Viewport id
  263.  * @param data  Text data.
  264.  * @param x Leftmost column of the area.
  265.  * @param y Topmost row of the area.
  266.  * @param w Number of rows.
  267.  * @param h Number of columns.
  268.  */
  269. static void draw_text_data(keyfield_t *data, unsigned int x,
  270.     unsigned int y, unsigned int w, unsigned int h)
  271. {
  272.     unsigned int i, j;
  273.     keyfield_t *field;
  274.     attrs_t *a0, *a1;
  275.  
  276.     serial_goto(x, y);
  277.     a0 = &data[0].attrs;
  278.     serial_set_attrs(a0);
  279.  
  280.     for (j = 0; j < h; j++) {
  281.         if (j > 0 && w != scr_width)
  282.             serial_goto(x, j);
  283.  
  284.         for (i = 0; i < w; i++) {
  285.             field = &data[j * w + i];
  286.  
  287.             a1 = &field->attrs;
  288.             if (!attrs_same(*a0, *a1))
  289.                 serial_set_attrs(a1);
  290.             serial_putchar(field->character);
  291.             a0 = a1;
  292.         }
  293.     }
  294. }
  295.  
  296. int lastcol = 0;
  297. int lastrow = 0;
  298.  
  299. /**
  300.  * Main function of the thread serving client connections.
  301.  */
  302. void serial_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  303. {
  304.     int retval;
  305.     ipc_callid_t callid;
  306.     ipc_call_t call;
  307.     keyfield_t *interbuf = NULL;
  308.     size_t intersize = 0;
  309.  
  310.     wchar_t c;
  311.     int col, row, w, h;
  312.     int i;
  313.  
  314.     attrs_t cur_attr;
  315.    
  316.     if (client_connected) {
  317.         ipc_answer_0(iid, ELIMIT);
  318.         return;
  319.     }
  320.    
  321.     client_connected = 1;
  322.     ipc_answer_0(iid, EOK);
  323.  
  324.     cur_attr.t = at_style;
  325.     cur_attr.a.s.style = STYLE_NORMAL;
  326.    
  327.     /* Clear the terminal, set scrolling region
  328.        to 0 - height rows. */
  329.     serial_clrscr();
  330.     serial_goto(0, 0);
  331.     serial_set_scroll_region(scr_height);
  332.    
  333.     while (true) {
  334.         callid = async_get_call(&call);
  335.         switch (IPC_GET_METHOD(call)) {
  336.         case IPC_M_PHONE_HUNGUP:
  337.             client_connected = 0;
  338.             ipc_answer_0(callid, EOK);
  339.             return;
  340.         case IPC_M_SHARE_OUT:
  341.             /* We accept one area for data interchange */
  342.             intersize = IPC_GET_ARG2(call);
  343.             if (intersize >= scr_width * scr_height *
  344.                 sizeof(*interbuf)) {
  345.                 receive_comm_area(callid, &call,
  346.                     (void *) &interbuf);
  347.                 continue;
  348.             }
  349.             retval = EINVAL;
  350.             break;
  351.         case FB_DRAW_TEXT_DATA:
  352.             col = IPC_GET_ARG1(call);
  353.             row = IPC_GET_ARG2(call);
  354.             w = IPC_GET_ARG3(call);
  355.             h = IPC_GET_ARG4(call);
  356.             if (!interbuf) {
  357.                 retval = EINVAL;
  358.                 break;
  359.             }
  360.             if (col + w > scr_width || row + h > scr_height) {
  361.                 retval = EINVAL;
  362.                 break;
  363.             }
  364.             draw_text_data(interbuf, col, row, w, h);
  365.             lastcol = col + w;
  366.             lastrow = row + h - 1;
  367.             retval = 0;
  368.             break;
  369.         case FB_PUTCHAR:
  370.             c = IPC_GET_ARG1(call);
  371.             col = IPC_GET_ARG2(call);
  372.             row = IPC_GET_ARG3(call);
  373.             if ((lastcol != col) || (lastrow != row))
  374.                 serial_goto(col, row);
  375.             lastcol = col + 1;
  376.             lastrow = row;
  377.             serial_putchar(c);
  378.             retval = 0;
  379.             break;
  380.         case FB_CURSOR_GOTO:
  381.             col = IPC_GET_ARG1(call);
  382.             row = IPC_GET_ARG2(call);
  383.             serial_goto(col, row);
  384.             lastcol = col;
  385.             lastrow = row;
  386.             retval = 0;
  387.             break;
  388.         case FB_GET_CSIZE:
  389.             ipc_answer_2(callid, EOK, scr_width, scr_height);
  390.             continue;
  391.         case FB_GET_COLOR_CAP:
  392.             ipc_answer_1(callid, EOK, color ? FB_CCAP_INDEXED :
  393.                 FB_CCAP_STYLE);
  394.             continue;
  395.         case FB_CLEAR:
  396.             serial_clrscr();
  397.             retval = 0;
  398.             break;
  399.         case FB_SET_STYLE:
  400.             cur_attr.t = at_style;
  401.             cur_attr.a.s.style = IPC_GET_ARG1(call);
  402.             cur_attr.a.i.bg_color = IPC_GET_ARG2(call);
  403.             serial_set_attrs(&cur_attr);
  404.  
  405.             retval = 0;
  406.             break;
  407.         case FB_SET_COLOR:
  408.             cur_attr.t = at_idx;
  409.             cur_attr.a.i.fg_color = IPC_GET_ARG1(call);
  410.             cur_attr.a.i.bg_color = IPC_GET_ARG2(call);
  411.             cur_attr.a.i.flags = IPC_GET_ARG3(call);
  412.             serial_set_attrs(&cur_attr);
  413.  
  414.             retval = 0;
  415.             break;
  416.         case FB_SET_RGB_COLOR:
  417.             cur_attr.t = at_rgb;
  418.             cur_attr.a.i.fg_color = IPC_GET_ARG1(call);
  419.             cur_attr.a.i.bg_color = IPC_GET_ARG2(call);
  420.             serial_set_attrs(&cur_attr);
  421.  
  422.             retval = 0;
  423.             break;
  424.         case FB_SCROLL:
  425.             i = IPC_GET_ARG1(call);
  426.             if ((i > scr_height) || (i < -scr_height)) {
  427.                 retval = EINVAL;
  428.                 break;
  429.             }
  430.             serial_scroll(i);
  431.             serial_goto(lastcol, lastrow);
  432.             retval = 0;
  433.             break;
  434.         case FB_CURSOR_VISIBILITY:
  435.             if(IPC_GET_ARG1(call))
  436.                 serial_cursor_enable();
  437.             else
  438.                 serial_cursor_disable();
  439.             retval = 0;
  440.             break;
  441.         case FB_SCREEN_YIELD:
  442.             serial_sgr(SGR_RESET);
  443.             serial_puts("\033[2J");
  444.             serial_goto(0, 0);
  445.             serial_cursor_enable();
  446.             retval = 0;
  447.             break;
  448.         case FB_SCREEN_RECLAIM:
  449.             serial_clrscr();
  450.             serial_set_attrs(&cur_attr);
  451.             retval = 0;
  452.             break;
  453.         default:
  454.             retval = ENOENT;
  455.         }
  456.         ipc_answer_0(callid, retval);
  457.     }
  458. }
  459.  
  460. /**
  461.  * @}
  462.  */
  463.