1 | /* ----------------------------------------------------------------------- * |
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2 | * |
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3 | * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved |
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4 | * Copyright 2009-2014 Intel Corporation; author: H. Peter Anvin |
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5 | * |
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6 | * This program is free software; you can redistribute it and/or modify |
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7 | * it under the terms of the GNU General Public License as published by |
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8 | * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
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9 | * Boston MA 02110-1301, USA; either version 2 of the License, or |
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10 | * (at your option) any later version; incorporated herein by reference. |
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11 | * |
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12 | * ----------------------------------------------------------------------- */ |
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13 | |
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14 | /* |
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15 | * menumain.c |
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16 | * |
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17 | * Simple menu system which displays a list and allows the user to select |
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18 | * a command line and/or edit it. |
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19 | */ |
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20 | |
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21 | #include <ctype.h> |
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22 | #include <string.h> |
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23 | #include <stdlib.h> |
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24 | #include <stdio.h> |
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25 | #include <consoles.h> |
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26 | #include <getkey.h> |
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27 | #include <minmax.h> |
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28 | #include <setjmp.h> |
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29 | #include <limits.h> |
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30 | #include <com32.h> |
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31 | #include <core.h> |
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32 | #include <syslinux/adv.h> |
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33 | #include <syslinux/boot.h> |
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34 | |
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35 | #include "menu.h" |
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36 | |
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37 | /* The symbol "cm" always refers to the current menu across this file... */ |
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38 | static struct menu *cm; |
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39 | |
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40 | const struct menu_parameter mparm[NPARAMS] = { |
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41 | [P_WIDTH] = {"width", 0}, |
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42 | [P_MARGIN] = {"margin", 10}, |
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43 | [P_PASSWD_MARGIN] = {"passwordmargin", 3}, |
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44 | [P_MENU_ROWS] = {"rows", 12}, |
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45 | [P_TABMSG_ROW] = {"tabmsgrow", 18}, |
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46 | [P_CMDLINE_ROW] = {"cmdlinerow", 18}, |
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47 | [P_END_ROW] = {"endrow", -1}, |
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48 | [P_PASSWD_ROW] = {"passwordrow", 11}, |
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49 | [P_TIMEOUT_ROW] = {"timeoutrow", 20}, |
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50 | [P_HELPMSG_ROW] = {"helpmsgrow", 22}, |
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51 | [P_HELPMSGEND_ROW] = {"helpmsgendrow", -1}, |
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52 | [P_HSHIFT] = {"hshift", 0}, |
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53 | [P_VSHIFT] = {"vshift", 0}, |
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54 | [P_HIDDEN_ROW] = {"hiddenrow", -2}, |
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55 | }; |
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56 | |
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57 | /* These macros assume "cm" is a pointer to the current menu */ |
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58 | #define WIDTH (cm->mparm[P_WIDTH]) |
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59 | #define MARGIN (cm->mparm[P_MARGIN]) |
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60 | #define PASSWD_MARGIN (cm->mparm[P_PASSWD_MARGIN]) |
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61 | #define MENU_ROWS (cm->mparm[P_MENU_ROWS]) |
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62 | #define TABMSG_ROW (cm->mparm[P_TABMSG_ROW]+VSHIFT) |
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63 | #define CMDLINE_ROW (cm->mparm[P_CMDLINE_ROW]+VSHIFT) |
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64 | #define END_ROW (cm->mparm[P_END_ROW]) |
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65 | #define PASSWD_ROW (cm->mparm[P_PASSWD_ROW]+VSHIFT) |
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66 | #define TIMEOUT_ROW (cm->mparm[P_TIMEOUT_ROW]+VSHIFT) |
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67 | #define HELPMSG_ROW (cm->mparm[P_HELPMSG_ROW]+VSHIFT) |
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68 | #define HELPMSGEND_ROW (cm->mparm[P_HELPMSGEND_ROW]) |
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69 | #define HSHIFT (cm->mparm[P_HSHIFT]) |
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70 | #define VSHIFT (cm->mparm[P_VSHIFT]) |
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71 | #define HIDDEN_ROW (cm->mparm[P_HIDDEN_ROW]) |
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72 | |
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73 | static char *pad_line(const char *text, int align, int width) |
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74 | { |
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75 | static char buffer[MAX_CMDLINE_LEN]; |
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76 | int n, p; |
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77 | |
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78 | if (width >= (int)sizeof buffer) |
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79 | return NULL; /* Can't do it */ |
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80 | |
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81 | n = strlen(text); |
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82 | if (n >= width) |
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83 | n = width; |
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84 | |
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85 | memset(buffer, ' ', width); |
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86 | buffer[width] = 0; |
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87 | p = ((width - n) * align) >> 1; |
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88 | memcpy(buffer + p, text, n); |
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89 | |
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90 | return buffer; |
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91 | } |
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92 | |
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93 | /* Display an entry, with possible hotkey highlight. Assumes |
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94 | that the current attribute is the non-hotkey one, and will |
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95 | guarantee that as an exit condition as well. */ |
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96 | static void |
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97 | display_entry(const struct menu_entry *entry, const char *attrib, |
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98 | const char *hotattrib, int width) |
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99 | { |
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100 | const char *p = entry->displayname; |
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101 | char marker; |
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102 | |
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103 | if (!p) |
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104 | p = ""; |
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105 | |
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106 | switch (entry->action) { |
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107 | case MA_SUBMENU: |
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108 | marker = '>'; |
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109 | break; |
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110 | case MA_EXIT: |
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111 | marker = '<'; |
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112 | break; |
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113 | default: |
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114 | marker = 0; |
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115 | break; |
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116 | } |
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117 | |
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118 | if (marker) |
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119 | width -= 2; |
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120 | |
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121 | while (width) { |
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122 | if (*p) { |
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123 | if (*p == '^') { |
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124 | p++; |
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125 | if (*p && ((unsigned char)*p & ~0x20) == entry->hotkey) { |
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126 | fputs(hotattrib, stdout); |
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127 | putchar(*p++); |
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128 | fputs(attrib, stdout); |
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129 | width--; |
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130 | } |
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131 | } else { |
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132 | putchar(*p++); |
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133 | width--; |
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134 | } |
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135 | } else { |
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136 | putchar(' '); |
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137 | width--; |
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138 | } |
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139 | } |
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140 | |
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141 | if (marker) { |
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142 | putchar(' '); |
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143 | putchar(marker); |
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144 | } |
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145 | } |
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146 | |
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147 | static void draw_row(int y, int sel, int top, int sbtop, int sbbot) |
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148 | { |
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149 | int i = (y - 4 - VSHIFT) + top; |
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150 | int dis = (i < cm->nentries) && is_disabled(cm->menu_entries[i]); |
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151 | |
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152 | printf("\033[%d;%dH\1#1\016x\017%s ", |
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153 | y, MARGIN + 1 + HSHIFT, |
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154 | (i == sel) ? "\1#5" : dis ? "\2#17" : "\1#3"); |
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155 | |
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156 | if (i >= cm->nentries) { |
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157 | fputs(pad_line("", 0, WIDTH - 2 * MARGIN - 4), stdout); |
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158 | } else { |
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159 | display_entry(cm->menu_entries[i], |
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160 | (i == sel) ? "\1#5" : dis ? "\2#17" : "\1#3", |
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161 | (i == sel) ? "\1#6" : dis ? "\2#17" : "\1#4", |
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162 | WIDTH - 2 * MARGIN - 4); |
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163 | } |
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164 | |
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165 | if (cm->nentries <= MENU_ROWS) { |
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166 | printf(" \1#1\016x\017"); |
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167 | } else if (sbtop > 0) { |
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168 | if (y >= sbtop && y <= sbbot) |
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169 | printf(" \1#7\016a\017"); |
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170 | else |
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171 | printf(" \1#1\016x\017"); |
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172 | } else { |
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173 | putchar(' '); /* Don't modify the scrollbar */ |
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174 | } |
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175 | } |
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176 | |
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177 | static jmp_buf timeout_jump; |
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178 | |
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179 | int mygetkey(clock_t timeout) |
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180 | { |
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181 | clock_t t0, t; |
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182 | clock_t tto, to; |
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183 | int key; |
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184 | |
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185 | if (!totaltimeout) |
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186 | return get_key(stdin, timeout); |
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187 | |
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188 | for (;;) { |
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189 | tto = min(totaltimeout, INT_MAX); |
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190 | to = timeout ? min(tto, timeout) : tto; |
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191 | |
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192 | t0 = times(NULL); |
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193 | key = get_key(stdin, to); |
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194 | t = times(NULL) - t0; |
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195 | |
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196 | if (totaltimeout <= t) |
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197 | longjmp(timeout_jump, 1); |
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198 | |
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199 | totaltimeout -= t; |
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200 | |
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201 | if (key != KEY_NONE) |
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202 | return key; |
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203 | |
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204 | if (timeout) { |
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205 | if (timeout <= t) |
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206 | return KEY_NONE; |
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207 | |
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208 | timeout -= t; |
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209 | } |
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210 | } |
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211 | } |
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212 | |
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213 | static int ask_passwd(const char *menu_entry) |
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214 | { |
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215 | char user_passwd[WIDTH], *p; |
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216 | int done; |
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217 | int key; |
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218 | int x; |
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219 | int rv; |
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220 | |
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221 | printf("\033[%d;%dH\2#11\016l", PASSWD_ROW, PASSWD_MARGIN + 1); |
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222 | for (x = 2; x <= WIDTH - 2 * PASSWD_MARGIN - 1; x++) |
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223 | putchar('q'); |
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224 | |
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225 | printf("k\033[%d;%dHx", PASSWD_ROW + 1, PASSWD_MARGIN + 1); |
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226 | for (x = 2; x <= WIDTH - 2 * PASSWD_MARGIN - 1; x++) |
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227 | putchar(' '); |
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228 | |
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229 | printf("x\033[%d;%dHm", PASSWD_ROW + 2, PASSWD_MARGIN + 1); |
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230 | for (x = 2; x <= WIDTH - 2 * PASSWD_MARGIN - 1; x++) |
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231 | putchar('q'); |
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232 | |
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233 | printf("j\017\033[%d;%dH\2#12 %s \033[%d;%dH\2#13", |
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234 | PASSWD_ROW, (WIDTH - (strlen(cm->messages[MSG_PASSPROMPT]) + 2)) / 2, |
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235 | cm->messages[MSG_PASSPROMPT], PASSWD_ROW + 1, PASSWD_MARGIN + 3); |
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236 | |
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237 | drain_keyboard(); |
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238 | |
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239 | /* Actually allow user to type a password, then compare to the SHA1 */ |
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240 | done = 0; |
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241 | p = user_passwd; |
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242 | |
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243 | while (!done) { |
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244 | key = mygetkey(0); |
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245 | |
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246 | switch (key) { |
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247 | case KEY_ENTER: |
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248 | case KEY_CTRL('J'): |
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249 | done = 1; |
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250 | break; |
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251 | |
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252 | case KEY_ESC: |
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253 | case KEY_CTRL('C'): |
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254 | p = user_passwd; /* No password entered */ |
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255 | done = 1; |
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256 | break; |
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257 | |
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258 | case KEY_BACKSPACE: |
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259 | case KEY_DEL: |
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260 | case KEY_DELETE: |
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261 | if (p > user_passwd) { |
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262 | printf("\b \b"); |
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263 | p--; |
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264 | } |
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265 | break; |
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266 | |
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267 | case KEY_CTRL('U'): |
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268 | while (p > user_passwd) { |
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269 | printf("\b \b"); |
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270 | p--; |
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271 | } |
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272 | break; |
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273 | |
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274 | default: |
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275 | if (key >= ' ' && key <= 0xFF && |
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276 | (p - user_passwd) < WIDTH - 2 * PASSWD_MARGIN - 5) { |
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277 | *p++ = key; |
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278 | putchar('*'); |
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279 | } |
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280 | break; |
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281 | } |
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282 | } |
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283 | |
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284 | if (p == user_passwd) |
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285 | return 0; /* No password entered */ |
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286 | |
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287 | *p = '\0'; |
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288 | |
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289 | rv = (cm->menu_master_passwd && |
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290 | passwd_compare(cm->menu_master_passwd, user_passwd)) |
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291 | || (menu_entry && passwd_compare(menu_entry, user_passwd)); |
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292 | |
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293 | /* Clean up */ |
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294 | memset(user_passwd, 0, WIDTH); |
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295 | drain_keyboard(); |
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296 | |
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297 | return rv; |
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298 | } |
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299 | |
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300 | static void draw_menu(int sel, int top, int edit_line) |
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301 | { |
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302 | int x, y; |
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303 | int sbtop = 0, sbbot = 0; |
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304 | const char *tabmsg; |
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305 | int tabmsg_len; |
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306 | |
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307 | if (cm->nentries > MENU_ROWS) { |
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308 | int sblen = max(MENU_ROWS * MENU_ROWS / cm->nentries, 1); |
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309 | sbtop = (MENU_ROWS - sblen + 1) * top / (cm->nentries - MENU_ROWS + 1); |
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310 | sbbot = sbtop + sblen - 1; |
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311 | sbtop += 4; |
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312 | sbbot += 4; /* Starting row of scrollbar */ |
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313 | } |
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314 | |
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315 | printf("\033[%d;%dH\1#1\016l", VSHIFT + 1, HSHIFT + MARGIN + 1); |
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316 | for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++) |
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317 | putchar('q'); |
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318 | |
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319 | printf("k\033[%d;%dH\1#1x\017\1#2 %s \1#1\016x", |
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320 | VSHIFT + 2, |
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321 | HSHIFT + MARGIN + 1, pad_line(cm->title, 1, WIDTH - 2 * MARGIN - 4)); |
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322 | |
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323 | printf("\033[%d;%dH\1#1t", VSHIFT + 3, HSHIFT + MARGIN + 1); |
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324 | for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++) |
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325 | putchar('q'); |
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326 | fputs("u\017", stdout); |
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327 | |
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328 | for (y = 4 + VSHIFT; y < 4 + VSHIFT + MENU_ROWS; y++) |
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329 | draw_row(y, sel, top, sbtop, sbbot); |
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330 | |
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331 | printf("\033[%d;%dH\1#1\016m", y, HSHIFT + MARGIN + 1); |
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332 | for (x = 2 + HSHIFT; x <= (WIDTH - 2 * MARGIN - 1) + HSHIFT; x++) |
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333 | putchar('q'); |
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334 | fputs("j\017", stdout); |
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335 | |
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336 | if (edit_line && cm->allowedit && !cm->menu_master_passwd) |
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337 | tabmsg = cm->messages[MSG_TAB]; |
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338 | else |
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339 | tabmsg = cm->messages[MSG_NOTAB]; |
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340 | |
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341 | tabmsg_len = strlen(tabmsg); |
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342 | |
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343 | printf("\1#8\033[%d;%dH%s", |
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344 | TABMSG_ROW, 1 + HSHIFT + ((WIDTH - tabmsg_len) >> 1), tabmsg); |
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345 | printf("\1#0\033[%d;1H", END_ROW); |
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346 | } |
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347 | |
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348 | static void clear_screen(void) |
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349 | { |
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350 | fputs("\033e\033%@\033)0\033(B\1#0\033[?25l\033[2J", stdout); |
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351 | } |
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352 | |
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353 | static void display_help(const char *text) |
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354 | { |
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355 | int row; |
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356 | const char *p; |
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357 | |
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358 | if (!text) { |
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359 | text = ""; |
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360 | printf("\1#0\033[%d;1H", HELPMSG_ROW); |
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361 | } else { |
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362 | printf("\2#16\033[%d;1H", HELPMSG_ROW); |
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363 | } |
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364 | |
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365 | for (p = text, row = HELPMSG_ROW; *p && row <= HELPMSGEND_ROW; p++) { |
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366 | switch (*p) { |
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367 | case '\r': |
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368 | case '\f': |
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369 | case '\v': |
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370 | case '\033': |
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371 | break; |
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372 | case '\n': |
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373 | printf("\033[K\033[%d;1H", ++row); |
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374 | break; |
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375 | default: |
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376 | putchar(*p); |
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377 | } |
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378 | } |
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379 | |
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380 | fputs("\033[K", stdout); |
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381 | |
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382 | while (row <= HELPMSGEND_ROW) { |
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383 | printf("\033[K\033[%d;1H", ++row); |
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384 | } |
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385 | } |
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386 | |
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387 | static void show_fkey(int key) |
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388 | { |
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389 | int fkey; |
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390 | |
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391 | while (1) { |
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392 | switch (key) { |
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393 | case KEY_F1: |
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394 | fkey = 0; |
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395 | break; |
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396 | case KEY_F2: |
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397 | fkey = 1; |
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398 | break; |
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399 | case KEY_F3: |
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400 | fkey = 2; |
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401 | break; |
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402 | case KEY_F4: |
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403 | fkey = 3; |
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404 | break; |
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405 | case KEY_F5: |
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406 | fkey = 4; |
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407 | break; |
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408 | case KEY_F6: |
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409 | fkey = 5; |
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410 | break; |
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411 | case KEY_F7: |
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412 | fkey = 6; |
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413 | break; |
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414 | case KEY_F8: |
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415 | fkey = 7; |
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416 | break; |
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417 | case KEY_F9: |
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418 | fkey = 8; |
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419 | break; |
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420 | case KEY_F10: |
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421 | fkey = 9; |
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422 | break; |
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423 | case KEY_F11: |
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424 | fkey = 10; |
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425 | break; |
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426 | case KEY_F12: |
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427 | fkey = 11; |
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428 | break; |
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429 | default: |
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430 | fkey = -1; |
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431 | break; |
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432 | } |
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433 | |
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434 | if (fkey == -1) |
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435 | break; |
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436 | |
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437 | if (cm->fkeyhelp[fkey].textname) |
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438 | key = show_message_file(cm->fkeyhelp[fkey].textname, |
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439 | cm->fkeyhelp[fkey].background); |
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440 | else |
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441 | break; |
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442 | } |
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443 | } |
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444 | |
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445 | static const char *edit_cmdline(const char *input, int top) |
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446 | { |
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447 | static char cmdline[MAX_CMDLINE_LEN]; |
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448 | int key, len, prev_len, cursor; |
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449 | int redraw = 1; /* We enter with the menu already drawn */ |
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450 | |
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451 | strlcpy(cmdline, input, MAX_CMDLINE_LEN); |
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452 | cmdline[MAX_CMDLINE_LEN - 1] = '\0'; |
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453 | |
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454 | len = cursor = strlen(cmdline); |
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455 | prev_len = 0; |
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456 | |
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457 | for (;;) { |
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458 | if (redraw > 1) { |
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459 | /* Clear and redraw whole screen */ |
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460 | /* Enable ASCII on G0 and DEC VT on G1; do it in this order |
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461 | to avoid confusing the Linux console */ |
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462 | clear_screen(); |
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463 | draw_menu(-1, top, 1); |
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464 | prev_len = 0; |
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465 | } |
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466 | |
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467 | if (redraw > 0) { |
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468 | /* Redraw the command line */ |
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469 | printf("\033[?25l\033[%d;1H\1#9> \2#10%s", |
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470 | CMDLINE_ROW, pad_line(cmdline, 0, max(len, prev_len))); |
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471 | printf("\2#10\033[%d;3H%s\033[?25h", |
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472 | CMDLINE_ROW, pad_line(cmdline, 0, cursor)); |
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473 | prev_len = len; |
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474 | redraw = 0; |
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475 | } |
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476 | |
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477 | key = mygetkey(0); |
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478 | |
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479 | switch (key) { |
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480 | case KEY_CTRL('L'): |
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481 | redraw = 2; |
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482 | break; |
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483 | |
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484 | case KEY_ENTER: |
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485 | case KEY_CTRL('J'): |
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486 | return cmdline; |
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487 | |
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488 | case KEY_ESC: |
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489 | case KEY_CTRL('C'): |
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490 | return NULL; |
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491 | |
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492 | case KEY_BACKSPACE: |
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493 | case KEY_DEL: |
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494 | if (cursor) { |
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495 | memmove(cmdline + cursor - 1, cmdline + cursor, |
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496 | len - cursor + 1); |
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497 | len--; |
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498 | cursor--; |
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499 | redraw = 1; |
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500 | } |
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501 | break; |
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502 | |
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503 | case KEY_CTRL('D'): |
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504 | case KEY_DELETE: |
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505 | if (cursor < len) { |
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506 | memmove(cmdline + cursor, cmdline + cursor + 1, len - cursor); |
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507 | len--; |
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508 | redraw = 1; |
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509 | } |
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510 | break; |
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511 | |
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512 | case KEY_CTRL('U'): |
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513 | if (len) { |
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514 | len = cursor = 0; |
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515 | cmdline[len] = '\0'; |
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516 | redraw = 1; |
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517 | } |
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518 | break; |
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519 | |
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520 | case KEY_CTRL('W'): |
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521 | if (cursor) { |
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522 | int prevcursor = cursor; |
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523 | |
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524 | while (cursor && my_isspace(cmdline[cursor - 1])) |
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525 | cursor--; |
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526 | |
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527 | while (cursor && !my_isspace(cmdline[cursor - 1])) |
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528 | cursor--; |
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529 | |
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530 | memmove(cmdline + cursor, cmdline + prevcursor, |
---|
531 | len - prevcursor + 1); |
---|
532 | len -= (prevcursor - cursor); |
---|
533 | redraw = 1; |
---|
534 | } |
---|
535 | break; |
---|
536 | |
---|
537 | case KEY_LEFT: |
---|
538 | case KEY_CTRL('B'): |
---|
539 | if (cursor) { |
---|
540 | cursor--; |
---|
541 | redraw = 1; |
---|
542 | } |
---|
543 | break; |
---|
544 | |
---|
545 | case KEY_RIGHT: |
---|
546 | case KEY_CTRL('F'): |
---|
547 | if (cursor < len) { |
---|
548 | putchar(cmdline[cursor++]); |
---|
549 | } |
---|
550 | break; |
---|
551 | |
---|
552 | case KEY_CTRL('K'): |
---|
553 | if (cursor < len) { |
---|
554 | cmdline[len = cursor] = '\0'; |
---|
555 | redraw = 1; |
---|
556 | } |
---|
557 | break; |
---|
558 | |
---|
559 | case KEY_HOME: |
---|
560 | case KEY_CTRL('A'): |
---|
561 | if (cursor) { |
---|
562 | cursor = 0; |
---|
563 | redraw = 1; |
---|
564 | } |
---|
565 | break; |
---|
566 | |
---|
567 | case KEY_END: |
---|
568 | case KEY_CTRL('E'): |
---|
569 | if (cursor != len) { |
---|
570 | cursor = len; |
---|
571 | redraw = 1; |
---|
572 | } |
---|
573 | break; |
---|
574 | |
---|
575 | case KEY_F1: |
---|
576 | case KEY_F2: |
---|
577 | case KEY_F3: |
---|
578 | case KEY_F4: |
---|
579 | case KEY_F5: |
---|
580 | case KEY_F6: |
---|
581 | case KEY_F7: |
---|
582 | case KEY_F8: |
---|
583 | case KEY_F9: |
---|
584 | case KEY_F10: |
---|
585 | case KEY_F11: |
---|
586 | case KEY_F12: |
---|
587 | show_fkey(key); |
---|
588 | redraw = 1; |
---|
589 | break; |
---|
590 | |
---|
591 | default: |
---|
592 | if (key >= ' ' && key <= 0xFF && len < MAX_CMDLINE_LEN - 1) { |
---|
593 | if (cursor == len) { |
---|
594 | cmdline[len] = key; |
---|
595 | cmdline[++len] = '\0'; |
---|
596 | cursor++; |
---|
597 | putchar(key); |
---|
598 | prev_len++; |
---|
599 | } else { |
---|
600 | memmove(cmdline + cursor + 1, cmdline + cursor, |
---|
601 | len - cursor + 1); |
---|
602 | cmdline[cursor++] = key; |
---|
603 | len++; |
---|
604 | redraw = 1; |
---|
605 | } |
---|
606 | } |
---|
607 | break; |
---|
608 | } |
---|
609 | } |
---|
610 | } |
---|
611 | |
---|
612 | static void print_timeout_message(int tol, int row, const char *msg) |
---|
613 | { |
---|
614 | static int last_msg_len = 0; |
---|
615 | char buf[256]; |
---|
616 | int nc = 0, nnc, padc; |
---|
617 | const char *tp = msg; |
---|
618 | char tc; |
---|
619 | char *tq = buf; |
---|
620 | |
---|
621 | while ((size_t) (tq - buf) < (sizeof buf - 16) && (tc = *tp)) { |
---|
622 | tp++; |
---|
623 | if (tc == '#') { |
---|
624 | nnc = sprintf(tq, "\2#15%d\2#14", tol); |
---|
625 | tq += nnc; |
---|
626 | nc += nnc - 8; /* 8 formatting characters */ |
---|
627 | } else if (tc == '{') { |
---|
628 | /* Deal with {singular[,dual],plural} constructs */ |
---|
629 | struct { |
---|
630 | const char *s, *e; |
---|
631 | } tx[3]; |
---|
632 | const char *tpp; |
---|
633 | int n = 0; |
---|
634 | |
---|
635 | memset(tx, 0, sizeof tx); |
---|
636 | |
---|
637 | tx[0].s = tp; |
---|
638 | |
---|
639 | while (*tp && *tp != '}') { |
---|
640 | if (*tp == ',' && n < 2) { |
---|
641 | tx[n].e = tp; |
---|
642 | n++; |
---|
643 | tx[n].s = tp + 1; |
---|
644 | } |
---|
645 | tp++; |
---|
646 | } |
---|
647 | tx[n].e = tp; |
---|
648 | |
---|
649 | if (*tp) |
---|
650 | tp++; /* Skip final bracket */ |
---|
651 | |
---|
652 | if (!tx[1].s) |
---|
653 | tx[1] = tx[0]; |
---|
654 | if (!tx[2].s) |
---|
655 | tx[2] = tx[1]; |
---|
656 | |
---|
657 | /* Now [0] is singular, [1] is dual, and [2] is plural, |
---|
658 | even if the user only specified some of them. */ |
---|
659 | |
---|
660 | switch (tol) { |
---|
661 | case 1: |
---|
662 | n = 0; |
---|
663 | break; |
---|
664 | case 2: |
---|
665 | n = 1; |
---|
666 | break; |
---|
667 | default: |
---|
668 | n = 2; |
---|
669 | break; |
---|
670 | } |
---|
671 | |
---|
672 | for (tpp = tx[n].s; tpp < tx[n].e; tpp++) { |
---|
673 | if ((size_t) (tq - buf) < (sizeof buf)) { |
---|
674 | *tq++ = *tpp; |
---|
675 | nc++; |
---|
676 | } |
---|
677 | } |
---|
678 | } else { |
---|
679 | *tq++ = tc; |
---|
680 | nc++; |
---|
681 | } |
---|
682 | } |
---|
683 | *tq = '\0'; |
---|
684 | |
---|
685 | if (nc >= last_msg_len) { |
---|
686 | padc = 0; |
---|
687 | } else { |
---|
688 | padc = (last_msg_len - nc + 1) >> 1; |
---|
689 | } |
---|
690 | |
---|
691 | printf("\033[%d;%dH\2#14%*s%s%*s", row, |
---|
692 | HSHIFT + 1 + ((WIDTH - nc) >> 1) - padc, |
---|
693 | padc, "", buf, padc, ""); |
---|
694 | |
---|
695 | last_msg_len = nc; |
---|
696 | } |
---|
697 | |
---|
698 | /* Set the background screen, etc. */ |
---|
699 | static void prepare_screen_for_menu(void) |
---|
700 | { |
---|
701 | console_color_table = cm->color_table; |
---|
702 | console_color_table_size = menu_color_table_size; |
---|
703 | set_background(cm->menu_background); |
---|
704 | } |
---|
705 | |
---|
706 | static const char *do_hidden_menu(void) |
---|
707 | { |
---|
708 | int key; |
---|
709 | int timeout_left, this_timeout; |
---|
710 | |
---|
711 | clear_screen(); |
---|
712 | |
---|
713 | if (!setjmp(timeout_jump)) { |
---|
714 | timeout_left = cm->timeout; |
---|
715 | |
---|
716 | while (!cm->timeout || timeout_left) { |
---|
717 | int tol = timeout_left / CLK_TCK; |
---|
718 | |
---|
719 | print_timeout_message(tol, HIDDEN_ROW, cm->messages[MSG_AUTOBOOT]); |
---|
720 | |
---|
721 | this_timeout = min(timeout_left, CLK_TCK); |
---|
722 | key = mygetkey(this_timeout); |
---|
723 | |
---|
724 | if (key != KEY_NONE) { |
---|
725 | /* Clear the message from the screen */ |
---|
726 | print_timeout_message(0, HIDDEN_ROW, ""); |
---|
727 | return hide_key[key]; /* NULL if no MENU HIDEKEY in effect */ |
---|
728 | } |
---|
729 | |
---|
730 | timeout_left -= this_timeout; |
---|
731 | } |
---|
732 | } |
---|
733 | |
---|
734 | /* Clear the message from the screen */ |
---|
735 | print_timeout_message(0, HIDDEN_ROW, ""); |
---|
736 | |
---|
737 | if (cm->ontimeout) |
---|
738 | return cm->ontimeout; |
---|
739 | else |
---|
740 | return cm->menu_entries[cm->defentry]->cmdline; /* Default entry */ |
---|
741 | } |
---|
742 | |
---|
743 | static const char *run_menu(void) |
---|
744 | { |
---|
745 | int key; |
---|
746 | int done = 0; |
---|
747 | volatile int entry = cm->curentry; |
---|
748 | int prev_entry = -1; |
---|
749 | volatile int top = cm->curtop; |
---|
750 | int prev_top = -1; |
---|
751 | int clear = 1, to_clear; |
---|
752 | const char *cmdline = NULL; |
---|
753 | volatile clock_t key_timeout, timeout_left, this_timeout; |
---|
754 | const struct menu_entry *me; |
---|
755 | bool hotkey = false; |
---|
756 | |
---|
757 | /* Note: for both key_timeout and timeout == 0 means no limit */ |
---|
758 | timeout_left = key_timeout = cm->timeout; |
---|
759 | |
---|
760 | /* If we're in shiftkey mode, exit immediately unless a shift key |
---|
761 | is pressed */ |
---|
762 | if (shiftkey && !shift_is_held()) { |
---|
763 | return cm->menu_entries[cm->defentry]->cmdline; |
---|
764 | } else { |
---|
765 | shiftkey = 0; |
---|
766 | } |
---|
767 | |
---|
768 | /* Do this before hiddenmenu handling, so we show the background */ |
---|
769 | prepare_screen_for_menu(); |
---|
770 | |
---|
771 | /* Handle hiddenmenu */ |
---|
772 | if (hiddenmenu) { |
---|
773 | cmdline = do_hidden_menu(); |
---|
774 | if (cmdline) |
---|
775 | return cmdline; |
---|
776 | |
---|
777 | /* Otherwise display the menu now; the timeout has already been |
---|
778 | cancelled, since the user pressed a key. */ |
---|
779 | hiddenmenu = 0; |
---|
780 | key_timeout = 0; |
---|
781 | } |
---|
782 | |
---|
783 | /* Handle both local and global timeout */ |
---|
784 | if (setjmp(timeout_jump)) { |
---|
785 | entry = cm->defentry; |
---|
786 | |
---|
787 | if (top < 0 || top < entry - MENU_ROWS + 1) |
---|
788 | top = max(0, entry - MENU_ROWS + 1); |
---|
789 | else if (top > entry || top > max(0, cm->nentries - MENU_ROWS)) |
---|
790 | top = min(entry, max(0, cm->nentries - MENU_ROWS)); |
---|
791 | |
---|
792 | draw_menu(cm->ontimeout ? -1 : entry, top, 1); |
---|
793 | cmdline = |
---|
794 | cm->ontimeout ? cm->ontimeout : cm->menu_entries[entry]->cmdline; |
---|
795 | done = 1; |
---|
796 | } |
---|
797 | |
---|
798 | while (!done) { |
---|
799 | if (entry <= 0) { |
---|
800 | entry = 0; |
---|
801 | while (entry < cm->nentries && is_disabled(cm->menu_entries[entry])) |
---|
802 | entry++; |
---|
803 | } |
---|
804 | if (entry >= cm->nentries - 1) { |
---|
805 | entry = cm->nentries - 1; |
---|
806 | while (entry > 0 && is_disabled(cm->menu_entries[entry])) |
---|
807 | entry--; |
---|
808 | } |
---|
809 | |
---|
810 | me = cm->menu_entries[entry]; |
---|
811 | |
---|
812 | if (top < 0 || top < entry - MENU_ROWS + 1) |
---|
813 | top = max(0, entry - MENU_ROWS + 1); |
---|
814 | else if (top > entry || top > max(0, cm->nentries - MENU_ROWS)) |
---|
815 | top = min(entry, max(0, cm->nentries - MENU_ROWS)); |
---|
816 | |
---|
817 | /* Start with a clear screen */ |
---|
818 | if (clear) { |
---|
819 | /* Clear and redraw whole screen */ |
---|
820 | /* Enable ASCII on G0 and DEC VT on G1; do it in this order |
---|
821 | to avoid confusing the Linux console */ |
---|
822 | if (clear >= 2) |
---|
823 | prepare_screen_for_menu(); |
---|
824 | clear_screen(); |
---|
825 | clear = 0; |
---|
826 | prev_entry = prev_top = -1; |
---|
827 | } |
---|
828 | |
---|
829 | if (top != prev_top) { |
---|
830 | draw_menu(entry, top, 1); |
---|
831 | display_help(me->helptext); |
---|
832 | } else if (entry != prev_entry) { |
---|
833 | draw_row(prev_entry - top + 4 + VSHIFT, entry, top, 0, 0); |
---|
834 | draw_row(entry - top + 4 + VSHIFT, entry, top, 0, 0); |
---|
835 | display_help(me->helptext); |
---|
836 | } |
---|
837 | |
---|
838 | prev_entry = entry; |
---|
839 | prev_top = top; |
---|
840 | cm->curentry = entry; |
---|
841 | cm->curtop = top; |
---|
842 | |
---|
843 | /* Cursor movement cancels timeout */ |
---|
844 | if (entry != cm->defentry) |
---|
845 | key_timeout = 0; |
---|
846 | |
---|
847 | if (key_timeout) { |
---|
848 | int tol = timeout_left / CLK_TCK; |
---|
849 | print_timeout_message(tol, TIMEOUT_ROW, cm->messages[MSG_AUTOBOOT]); |
---|
850 | to_clear = 1; |
---|
851 | } else { |
---|
852 | to_clear = 0; |
---|
853 | } |
---|
854 | |
---|
855 | if (hotkey && me->immediate) { |
---|
856 | /* If the hotkey was flagged immediate, simulate pressing ENTER */ |
---|
857 | key = KEY_ENTER; |
---|
858 | } else { |
---|
859 | this_timeout = min(min(key_timeout, timeout_left), |
---|
860 | (clock_t) CLK_TCK); |
---|
861 | key = mygetkey(this_timeout); |
---|
862 | |
---|
863 | if (key != KEY_NONE) { |
---|
864 | timeout_left = key_timeout; |
---|
865 | if (to_clear) |
---|
866 | printf("\033[%d;1H\1#0\033[K", TIMEOUT_ROW); |
---|
867 | } |
---|
868 | } |
---|
869 | |
---|
870 | hotkey = false; |
---|
871 | |
---|
872 | switch (key) { |
---|
873 | case KEY_NONE: /* Timeout */ |
---|
874 | /* This is somewhat hacky, but this at least lets the user |
---|
875 | know what's going on, and still deals with "phantom inputs" |
---|
876 | e.g. on serial ports. |
---|
877 | |
---|
878 | Warning: a timeout will boot the default entry without any |
---|
879 | password! */ |
---|
880 | if (key_timeout) { |
---|
881 | if (timeout_left <= this_timeout) |
---|
882 | longjmp(timeout_jump, 1); |
---|
883 | |
---|
884 | timeout_left -= this_timeout; |
---|
885 | } |
---|
886 | break; |
---|
887 | |
---|
888 | case KEY_CTRL('L'): |
---|
889 | clear = 1; |
---|
890 | break; |
---|
891 | |
---|
892 | case KEY_ENTER: |
---|
893 | case KEY_CTRL('J'): |
---|
894 | key_timeout = 0; /* Cancels timeout */ |
---|
895 | if (me->passwd) { |
---|
896 | clear = 1; |
---|
897 | done = ask_passwd(me->passwd); |
---|
898 | } else { |
---|
899 | done = 1; |
---|
900 | } |
---|
901 | cmdline = NULL; |
---|
902 | if (done) { |
---|
903 | switch (me->action) { |
---|
904 | case MA_CMD: |
---|
905 | cmdline = me->cmdline; |
---|
906 | break; |
---|
907 | case MA_SUBMENU: |
---|
908 | case MA_GOTO: |
---|
909 | case MA_EXIT: |
---|
910 | done = 0; |
---|
911 | clear = 2; |
---|
912 | cm = me->submenu; |
---|
913 | entry = cm->curentry; |
---|
914 | top = cm->curtop; |
---|
915 | break; |
---|
916 | case MA_QUIT: |
---|
917 | /* Quit menu system */ |
---|
918 | done = 1; |
---|
919 | clear = 1; |
---|
920 | draw_row(entry - top + 4 + VSHIFT, -1, top, 0, 0); |
---|
921 | break; |
---|
922 | case MA_HELP: |
---|
923 | key = show_message_file(me->cmdline, me->background); |
---|
924 | /* If the exit was an F-key, display that help screen */ |
---|
925 | show_fkey(key); |
---|
926 | done = 0; |
---|
927 | clear = 1; |
---|
928 | break; |
---|
929 | default: |
---|
930 | done = 0; |
---|
931 | break; |
---|
932 | } |
---|
933 | } |
---|
934 | if (done && !me->passwd) { |
---|
935 | /* Only save a new default if we don't have a password... */ |
---|
936 | if (me->save && me->label) { |
---|
937 | syslinux_setadv(ADV_MENUSAVE, strlen(me->label), me->label); |
---|
938 | syslinux_adv_write(); |
---|
939 | } |
---|
940 | } |
---|
941 | break; |
---|
942 | |
---|
943 | case KEY_UP: |
---|
944 | case KEY_CTRL('P'): |
---|
945 | while (entry > 0) { |
---|
946 | entry--; |
---|
947 | if (entry < top) |
---|
948 | top -= MENU_ROWS; |
---|
949 | if (!is_disabled(cm->menu_entries[entry])) |
---|
950 | break; |
---|
951 | } |
---|
952 | break; |
---|
953 | |
---|
954 | case KEY_DOWN: |
---|
955 | case KEY_CTRL('N'): |
---|
956 | while (entry < cm->nentries - 1) { |
---|
957 | entry++; |
---|
958 | if (entry >= top + MENU_ROWS) |
---|
959 | top += MENU_ROWS; |
---|
960 | if (!is_disabled(cm->menu_entries[entry])) |
---|
961 | break; |
---|
962 | } |
---|
963 | break; |
---|
964 | |
---|
965 | case KEY_PGUP: |
---|
966 | case KEY_LEFT: |
---|
967 | case KEY_CTRL('B'): |
---|
968 | case '<': |
---|
969 | entry -= MENU_ROWS; |
---|
970 | top -= MENU_ROWS; |
---|
971 | while (entry > 0 && is_disabled(cm->menu_entries[entry])) { |
---|
972 | entry--; |
---|
973 | if (entry < top) |
---|
974 | top -= MENU_ROWS; |
---|
975 | } |
---|
976 | break; |
---|
977 | |
---|
978 | case KEY_PGDN: |
---|
979 | case KEY_RIGHT: |
---|
980 | case KEY_CTRL('F'): |
---|
981 | case '>': |
---|
982 | case ' ': |
---|
983 | entry += MENU_ROWS; |
---|
984 | top += MENU_ROWS; |
---|
985 | while (entry < cm->nentries - 1 |
---|
986 | && is_disabled(cm->menu_entries[entry])) { |
---|
987 | entry++; |
---|
988 | if (entry >= top + MENU_ROWS) |
---|
989 | top += MENU_ROWS; |
---|
990 | } |
---|
991 | break; |
---|
992 | |
---|
993 | case '-': |
---|
994 | while (entry > 0) { |
---|
995 | entry--; |
---|
996 | top--; |
---|
997 | if (!is_disabled(cm->menu_entries[entry])) |
---|
998 | break; |
---|
999 | } |
---|
1000 | break; |
---|
1001 | |
---|
1002 | case '+': |
---|
1003 | while (entry < cm->nentries - 1) { |
---|
1004 | entry++; |
---|
1005 | top++; |
---|
1006 | if (!is_disabled(cm->menu_entries[entry])) |
---|
1007 | break; |
---|
1008 | } |
---|
1009 | break; |
---|
1010 | |
---|
1011 | case KEY_CTRL('A'): |
---|
1012 | case KEY_HOME: |
---|
1013 | top = entry = 0; |
---|
1014 | break; |
---|
1015 | |
---|
1016 | case KEY_CTRL('E'): |
---|
1017 | case KEY_END: |
---|
1018 | entry = cm->nentries - 1; |
---|
1019 | top = max(0, cm->nentries - MENU_ROWS); |
---|
1020 | break; |
---|
1021 | |
---|
1022 | case KEY_F1: |
---|
1023 | case KEY_F2: |
---|
1024 | case KEY_F3: |
---|
1025 | case KEY_F4: |
---|
1026 | case KEY_F5: |
---|
1027 | case KEY_F6: |
---|
1028 | case KEY_F7: |
---|
1029 | case KEY_F8: |
---|
1030 | case KEY_F9: |
---|
1031 | case KEY_F10: |
---|
1032 | case KEY_F11: |
---|
1033 | case KEY_F12: |
---|
1034 | show_fkey(key); |
---|
1035 | clear = 1; |
---|
1036 | break; |
---|
1037 | |
---|
1038 | case KEY_TAB: |
---|
1039 | if (cm->allowedit && me->action == MA_CMD) { |
---|
1040 | int ok = 1; |
---|
1041 | |
---|
1042 | key_timeout = 0; /* Cancels timeout */ |
---|
1043 | draw_row(entry - top + 4 + VSHIFT, -1, top, 0, 0); |
---|
1044 | |
---|
1045 | if (cm->menu_master_passwd) { |
---|
1046 | ok = ask_passwd(NULL); |
---|
1047 | clear_screen(); |
---|
1048 | draw_menu(-1, top, 0); |
---|
1049 | } else { |
---|
1050 | /* Erase [Tab] message and help text */ |
---|
1051 | printf("\033[%d;1H\1#0\033[K", TABMSG_ROW); |
---|
1052 | display_help(NULL); |
---|
1053 | } |
---|
1054 | |
---|
1055 | if (ok) { |
---|
1056 | cmdline = edit_cmdline(me->cmdline, top); |
---|
1057 | done = !!cmdline; |
---|
1058 | clear = 1; /* In case we hit [Esc] and done is null */ |
---|
1059 | } else { |
---|
1060 | draw_row(entry - top + 4 + VSHIFT, entry, top, 0, 0); |
---|
1061 | } |
---|
1062 | } |
---|
1063 | break; |
---|
1064 | case KEY_CTRL('C'): /* Ctrl-C */ |
---|
1065 | case KEY_ESC: /* Esc */ |
---|
1066 | if (cm->parent) { |
---|
1067 | cm = cm->parent; |
---|
1068 | clear = 2; |
---|
1069 | entry = cm->curentry; |
---|
1070 | top = cm->curtop; |
---|
1071 | } else if (cm->allowedit) { |
---|
1072 | done = 1; |
---|
1073 | clear = 1; |
---|
1074 | key_timeout = 0; |
---|
1075 | |
---|
1076 | draw_row(entry - top + 4 + VSHIFT, -1, top, 0, 0); |
---|
1077 | |
---|
1078 | if (cm->menu_master_passwd) |
---|
1079 | done = ask_passwd(NULL); |
---|
1080 | } |
---|
1081 | break; |
---|
1082 | default: |
---|
1083 | if (key > 0 && key < 0xFF) { |
---|
1084 | key &= ~0x20; /* Upper case */ |
---|
1085 | if (cm->menu_hotkeys[key]) { |
---|
1086 | key_timeout = 0; |
---|
1087 | entry = cm->menu_hotkeys[key]->entry; |
---|
1088 | /* Should we commit at this point? */ |
---|
1089 | hotkey = true; |
---|
1090 | } |
---|
1091 | } |
---|
1092 | break; |
---|
1093 | } |
---|
1094 | } |
---|
1095 | |
---|
1096 | printf("\033[?25h"); /* Show cursor */ |
---|
1097 | |
---|
1098 | /* Return the label name so localboot and ipappend work */ |
---|
1099 | return cmdline; |
---|
1100 | } |
---|
1101 | |
---|
1102 | int main(int argc, char *argv[]) |
---|
1103 | { |
---|
1104 | const char *cmdline; |
---|
1105 | struct menu *m; |
---|
1106 | int rows, cols; |
---|
1107 | int i; |
---|
1108 | |
---|
1109 | (void)argc; |
---|
1110 | |
---|
1111 | parse_configs(argv + 1); |
---|
1112 | |
---|
1113 | /* |
---|
1114 | * We don't start the console until we have parsed the configuration |
---|
1115 | * file, since the configuration file might impact the console |
---|
1116 | * configuration, e.g. MENU RESOLUTION. |
---|
1117 | */ |
---|
1118 | start_console(); |
---|
1119 | if (getscreensize(1, &rows, &cols)) { |
---|
1120 | /* Unknown screen size? */ |
---|
1121 | rows = 24; |
---|
1122 | cols = 80; |
---|
1123 | } |
---|
1124 | |
---|
1125 | /* Some postprocessing for all menus */ |
---|
1126 | for (m = menu_list; m; m = m->next) { |
---|
1127 | if (!m->mparm[P_WIDTH]) |
---|
1128 | m->mparm[P_WIDTH] = cols; |
---|
1129 | |
---|
1130 | /* If anyone has specified negative parameters, consider them |
---|
1131 | relative to the bottom row of the screen. */ |
---|
1132 | for (i = 0; i < NPARAMS; i++) |
---|
1133 | if (m->mparm[i] < 0) |
---|
1134 | m->mparm[i] = max(m->mparm[i] + rows, 0); |
---|
1135 | } |
---|
1136 | |
---|
1137 | cm = start_menu; |
---|
1138 | |
---|
1139 | if (!cm->nentries) { |
---|
1140 | fputs("Initial menu has no LABEL entries!\n", stdout); |
---|
1141 | return 1; /* Error! */ |
---|
1142 | } |
---|
1143 | |
---|
1144 | for (;;) { |
---|
1145 | local_cursor_enable(true); |
---|
1146 | cmdline = run_menu(); |
---|
1147 | |
---|
1148 | if (clearmenu) |
---|
1149 | clear_screen(); |
---|
1150 | |
---|
1151 | local_cursor_enable(false); |
---|
1152 | printf("\033[?25h\033[%d;1H\033[0m", END_ROW); |
---|
1153 | |
---|
1154 | if (cmdline) { |
---|
1155 | uint32_t type = parse_image_type(cmdline); |
---|
1156 | |
---|
1157 | execute(cmdline, type, false); |
---|
1158 | if (cm->onerror) { |
---|
1159 | type = parse_image_type(cm->onerror); |
---|
1160 | execute(cm->onerror, type, true); |
---|
1161 | } |
---|
1162 | } else { |
---|
1163 | return 0; /* Exit */ |
---|
1164 | } |
---|
1165 | } |
---|
1166 | } |
---|