com32/include/menu.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
   8  *   Boston MA 02110-1301, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * menu.h
  15  *
  16  * Header file for the simple menu system
  17  */
  18
  19 #ifndef MENU_H
  20 #define MENU_H
  21
  22 #include <time.h>
  23 #include <sys/time.h>
  24 #include <sys/times.h>
  25 #include <inttypes.h>
  26 #include <unistd.h>
  27 #include <colortbl.h>
  28 #include <stdbool.h>
  29 #include <getkey.h>
  30 #include "refstr.h"
  31
  32 /* #define DEBUG 1 */
  33 #include <dprintf.h>
  34
  35 #ifndef CLK_TCK
  36 # define CLK_TCK sysconf(_SC_CLK_TCK)
  37 #endif
  38
  39 struct menu;
  40
  41 /* Note: the _UNRES variants must always be immediately after their
  42    "normal" versions. */
  43 enum menu_action {
  44     MA_NONE,                    /* Undefined value */
  45     MA_CMD,                     /* Execute a command */
  46     MA_DISABLED,                /* Disabled menu entry */
  47     MA_SUBMENU,                 /* This is a submenu entry */
  48     MA_GOTO,                    /* Go to another menu */
  49     MA_GOTO_UNRES,              /* Unresolved go to */
  50     MA_QUIT,                    /* Quit to CLI */
  51     MA_EXIT,                    /* Exit to higher-level menu */
  52     MA_EXIT_UNRES,              /* Unresolved exit */
  53     MA_HELP,                    /* Show help text */
  54 };
  55
  56 struct menu_entry {
  57     struct menu *menu;          /* Parent menu */
  58     const char *displayname;
  59     const char *label;
  60     const char *passwd;
  61     char *helptext;
  62     const char *cmdline;
  63     const char *background;
  64     struct menu *submenu;
  65     struct menu_entry *next;    /* Linked list of all labels across menus */
  66     int entry;                  /* Entry number inside menu */
  67     enum menu_action action;
  68     unsigned char hotkey;
  69     bool immediate;             /* Hotkey action does not require Enter */
  70     bool save;                  /* Save this entry if selected */
  71 };
  72
  73 static inline bool is_disabled(struct menu_entry *me)
  74 {
  75     return me->action == MA_DISABLED;
  76 }
  77
  78 enum kernel_type {
  79     /* Meta-types for internal use */
  80     KT_NONE,
  81     KT_LOCALBOOT,
  82
  83     /* The ones we can pass off to SYSLINUX, in order */
  84     KT_KERNEL,                  /* Undefined type */
  85     KT_LINUX,                   /* Linux kernel */
  86     KT_BOOT,                    /* Bootstrap program */
  87     KT_BSS,                     /* Boot sector with patch */
  88     KT_PXE,                     /* PXE NBP */
  89     KT_FDIMAGE,                 /* Floppy disk image */
  90     KT_COM32,                   /* COM32 image */
  91     KT_CONFIG,                  /* Configuration file */
  92 };
  93
  94 /* Configurable integer parameters */
  95 enum parameter_number {
  96     P_WIDTH,
  97     P_MARGIN,
  98     P_PASSWD_MARGIN,
  99     P_MENU_ROWS,
 100     P_TABMSG_ROW,
 101     P_CMDLINE_ROW,
 102     P_END_ROW,
 103     P_PASSWD_ROW,
 104     P_TIMEOUT_ROW,
 105     P_HELPMSG_ROW,
 106     P_HELPMSGEND_ROW,
 107     P_HSHIFT,
 108     P_VSHIFT,
 109     P_HIDDEN_ROW,
 110
 111     NPARAMS
 112 };
 113
 114 /* Configurable messages */
 115 enum message_number {
 116     MSG_TITLE,
 117     MSG_AUTOBOOT,
 118     MSG_TAB,
 119     MSG_NOTAB,
 120     MSG_PASSPROMPT,
 121
 122     MSG_COUNT
 123 };
 124
 125 struct messages {
 126     const char *name;           /* Message configuration name */
 127     const char *defmsg;         /* Default message text */
 128 };
 129
 130 struct menu_parameter {
 131     const char *name;
 132     int value;
 133 };
 134
 135 extern const struct menu_parameter mparm[NPARAMS];
 136
 137 struct fkey_help {
 138     const char *textname;
 139     const char *background;
 140 };
 141
 142 struct menu {
 143     struct menu *next;          /* Linked list of all menus */
 144     const char *label;          /* Goto label for this menu */
 145     struct menu *parent;
 146     struct menu_entry *parent_entry;    /* Entry for self in parent */
 147
 148     struct menu_entry **menu_entries;
 149     struct menu_entry *menu_hotkeys[256];
 150
 151     const char *messages[MSG_COUNT];
 152     int mparm[NPARAMS];
 153
 154     int nentries;
 155     int nentries_space;
 156     int defentry;
 157     int timeout;
 158
 159     bool allowedit;
 160     bool immediate;             /* MENU IMMEDIATE default for this menu */
 161     bool save;                  /* MENU SAVE default for this menu */
 162
 163     int curentry;
 164     int curtop;
 165
 166     const char *title;
 167     const char *ontimeout;
 168     const char *onerror;
 169     const char *menu_master_passwd;
 170     const char *menu_background;
 171
 172     struct color_table *color_table;
 173
 174     struct fkey_help fkeyhelp[12];
 175 };
 176
 177 extern struct menu *root_menu, *start_menu, *hide_menu, *menu_list;
 178
 179 /* 2048 is the current definition inside syslinux */
 180 #define MAX_CMDLINE_LEN  2048
 181
 182 /* These are global parameters regardless of which menu we're displaying */
 183 extern int shiftkey;
 184 extern int hiddenmenu;
 185 extern int clearmenu;
 186 extern long long totaltimeout;
 187 extern clock_t kbdtimeout;
 188 extern const char *hide_key[KEY_MAX];
 189
 190 void parse_configs(char **argv);
 191 int draw_background(const char *filename);
 192 void set_resolution(int x, int y);
 193 void start_console(void);
 194 void local_cursor_enable(bool);
 195
 196 static inline int my_isspace(char c)
 197 {
 198     return (unsigned char)c <= ' ';
 199 }
 200
 201 int my_isxdigit(char c);
 202 unsigned int hexval(char c);
 203 unsigned int hexval2(const char *p);
 204 uint32_t parse_argb(char **p);
 205
 206 extern const int message_base_color, menu_color_table_size;
 207 int mygetkey(clock_t timeout);
 208 int show_message_file(const char *filename, const char *background);
 209
 210 /* passwd.c */
 211 int passwd_compare(const char *passwd, const char *entry);
 212
 213 /* colors.c */
 214 #define MSG_COLORS_DEF_FG       0x90ffffff
 215 #define MSG_COLORS_DEF_BG       0x80ffffff
 216 #define MSG_COLORS_DEF_SHADOW   SHADOW_NORMAL
 217 void set_msg_colors_global(struct color_table *tbl,
 218                            unsigned int fg, unsigned int bg,
 219                            enum color_table_shadow shadow);
 220 struct color_table *default_color_table(void);
 221 struct color_table *copy_color_table(const struct color_table *master);
 222 extern const int message_base_color;
 223
 224 /* background.c */
 225 extern const char *current_background;
 226 void set_background(const char *new_background);
 227
 228 /* drain.c */
 229 void drain_keyboard(void);
 230
 231 /* chainboot.c */
 232 void chainboot_file(const char *file, enum kernel_type type);
 233
 234 #endif /* MENU_H */