618 lines
19 KiB
C
618 lines
19 KiB
C
#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <menu.h>
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#include <lib/print.h>
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#include <lib/blib.h>
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#include <lib/libc.h>
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#include <lib/config.h>
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#include <lib/term.h>
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#include <lib/gterm.h>
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#include <lib/readline.h>
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#include <lib/uri.h>
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#include <mm/pmm.h>
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#include <drivers/vbe.h>
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static char *menu_branding = NULL;
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#define EDITOR_MAX_BUFFER_SIZE 4096
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#define TOK_KEY 0
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#define TOK_EQUALS 1
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#define TOK_VALUE 2
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#define TOK_BADKEY 3
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static size_t get_line_offset(size_t *displacement, size_t index, const char *buffer) {
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size_t offset = 0;
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size_t _index = index;
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for (size_t i = 0; buffer[i]; i++) {
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if (!_index--)
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break;
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if (buffer[i] == '\n')
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offset = i + 1;
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}
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if (displacement)
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*displacement = index - offset;
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return offset;
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}
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static size_t get_line_length(size_t index, const char *buffer) {
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size_t i;
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for (i = index; buffer[i] != '\n' && buffer[i] != 0; i++);
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return i - index;
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}
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static size_t get_next_line(size_t index, const char *buffer) {
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if (buffer[index] == 0)
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return index;
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size_t displacement;
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get_line_offset(&displacement, index, buffer);
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while (buffer[index] != '\n') {
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if (buffer[index] == 0)
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return index;
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index++;
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}
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index++;
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size_t next_line_length = get_line_length(index, buffer);
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if (displacement > next_line_length)
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displacement = next_line_length;
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return index + displacement;
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}
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static size_t get_prev_line(size_t index, const char *buffer) {
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size_t offset, displacement, prev_line_offset, prev_line_length;
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offset = get_line_offset(&displacement, index, buffer);
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if (offset) {
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prev_line_offset = get_line_offset(NULL, offset - 1, buffer);
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prev_line_length = get_line_length(prev_line_offset, buffer);
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if (displacement > prev_line_length)
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displacement = prev_line_length;
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return prev_line_offset + displacement;
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}
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return offset;
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}
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static const char *VALID_KEYS[] = {
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"TIMEOUT",
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"DEFAULT_ENTRY",
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"GRAPHICS",
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"MENU_RESOLUTION",
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"MENU_BRANDING",
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"MENU_FONT",
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"TERMINAL_FONT",
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"THEME_COLOURS",
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"THEME_COLORS",
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"THEME_BACKGROUND",
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"THEME_FOREGROUND",
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"THEME_MARGIN",
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"THEME_MARGIN_GRADIENT",
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"BACKGROUND_PATH",
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"BACKGROUND_STYLE",
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"BACKDROP_COLOUR",
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"BACKDROP_COLOR",
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"EDITOR_ENABLED",
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"EDITOR_HIGHLIGHTING",
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"EDITOR_VALIDATION",
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"VERBOSE",
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"PROTOCOL",
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"CMDLINE",
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"KERNEL_CMDLINE",
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"KERNEL_PATH",
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"MODULE_PATH",
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"MODULE_STRING",
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"RESOLUTION",
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"KASLR",
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"DRIVE",
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"PARTITION",
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"IMAGE_PATH",
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NULL
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};
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static bool validation_enabled = true;
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static bool invalid_syntax = false;
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static int validate_line(const char *buffer) {
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if (!validation_enabled) return TOK_KEY;
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char keybuf[64];
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int i;
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for (i = 0; buffer[i] && i < 64; i++) {
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if (buffer[i] == '=') goto found_equals;
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keybuf[i] = buffer[i];
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}
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fail:
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if (i < 64) keybuf[i] = 0;
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if (keybuf[0] == '\n' || (!keybuf[0] && buffer[0] != '=')) return TOK_KEY; // blank line is valid
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invalid_syntax = true;
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return TOK_BADKEY;
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found_equals:
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if (i < 64) keybuf[i] = 0;
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for (i = 0; VALID_KEYS[i]; i++) {
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if (!strcmp(keybuf, VALID_KEYS[i])) {
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return TOK_KEY;
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}
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}
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goto fail;
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}
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static char *config_entry_editor(const char *title, const char *orig_entry) {
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size_t cursor_offset = 0;
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size_t entry_size = strlen(orig_entry);
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size_t _window_size = term_rows - 11;
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size_t window_offset = 0;
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size_t line_size = term_cols - 2;
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bool display_overflow_error = false;
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// Skip leading newlines
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while (*orig_entry == '\n') {
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orig_entry++;
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entry_size--;
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}
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if (entry_size >= EDITOR_MAX_BUFFER_SIZE) {
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panic("Entry is too big to be edited.");
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}
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bool syntax_highlighting_enabled = true;
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char *syntax_highlighting_enabled_config = config_get_value(NULL, 0, "EDITOR_HIGHLIGHTING");
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if (!strcmp(syntax_highlighting_enabled_config, "no")) syntax_highlighting_enabled = false;
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validation_enabled = true;
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char *validation_enabled_config = config_get_value(NULL, 0, "EDITOR_VALIDATION");
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if (!strcmp(validation_enabled_config, "no")) validation_enabled = false;
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static char *buffer = NULL;
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if (buffer == NULL)
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buffer = ext_mem_alloc(EDITOR_MAX_BUFFER_SIZE);
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memcpy(buffer, orig_entry, entry_size);
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buffer[entry_size] = 0;
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refresh:
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invalid_syntax = false;
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clear(true);
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disable_cursor();
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print("\n\n \e[36m %s \e[37m\n\n\n", menu_branding);
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//print("Editing \"%s\"\n", title);
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print(" \e[32mESC\e[0m Discard and Exit \e[32mF10\e[0m Boot\n");
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print("\n\xda");
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for (int i = 0; i < term_cols - 2; i++) {
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switch (i) {
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case 1: case 2: case 3:
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if (window_offset > 0) {
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print("\x18");
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break;
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}
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// FALLTHRU
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default: {
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int title_length = strlen(title);
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if (i == (term_cols / 2) - (title_length / 2) - 1) {
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print("%s", title);
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i += title_length - 1;
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} else {
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print("\xc4");
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}
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}
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}
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}
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print("\xbf\xb3");
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int cursor_x, cursor_y;
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size_t current_line = 0, line_offset = 0, window_size = _window_size;
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bool printed_cursor = false;
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int token_type = validate_line(buffer);
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for (size_t i = 0; ; i++) {
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// newline
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if (buffer[i] == '\n'
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&& current_line < window_offset + window_size
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&& current_line >= window_offset) {
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int x, y;
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get_cursor_pos(&x, &y);
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if (i == cursor_offset) {
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cursor_x = x;
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cursor_y = y;
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printed_cursor = true;
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}
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set_cursor_pos(term_cols - 1, y);
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if (current_line == window_offset + window_size - 1)
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print("\xb3\xc0");
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else
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print("\xb3\xb3");
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line_offset = 0;
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token_type = validate_line(buffer+i+1);
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current_line++;
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continue;
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}
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if (line_offset && !(line_offset % line_size)) {
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window_size--;
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if (current_line == window_offset + window_size)
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print("\x1a\xc0");
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else
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print("\x1a\x1b\x1b");
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}
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if (i == cursor_offset
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&& current_line < window_offset + window_size
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&& current_line >= window_offset) {
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get_cursor_pos(&cursor_x, &cursor_y);
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printed_cursor = true;
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}
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if (buffer[i] == 0 || current_line >= window_offset + window_size) {
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if (!printed_cursor) {
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if (i <= cursor_offset) {
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window_offset++;
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goto refresh;
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}
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if (i > cursor_offset) {
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window_offset--;
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goto refresh;
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}
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}
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break;
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}
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if (buffer[i] == '\n') {
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line_offset = 0;
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current_line++;
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continue;
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}
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if (current_line >= window_offset) {
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line_offset++;
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// switch to token type 1 if equals sign
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if (token_type == TOK_KEY && buffer[i] == '=') token_type = TOK_EQUALS;
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// syntax highlighting
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if (syntax_highlighting_enabled) {
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switch (token_type) {
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case TOK_KEY:
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print("\e[36m%c\e[0m", buffer[i]);
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break;
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case TOK_EQUALS:
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print("\e[32m%c\e[0m", buffer[i]);
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break;
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case TOK_VALUE:
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print("\e[39m%c\e[0m", buffer[i]);
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break;
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case TOK_BADKEY:
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print("\e[31m%c\e[0m", buffer[i]);
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break;
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}
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} else {
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print("%c", buffer[i]);
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}
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// switch to token type 2 after equals sign
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if (token_type == TOK_EQUALS) token_type = TOK_VALUE;
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}
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}
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// syntax error alert
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if (validation_enabled) {
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int x, y;
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get_cursor_pos(&x, &y);
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set_cursor_pos(0, term_rows-2);
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if (invalid_syntax) {
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print("\e[31mConfiguration is INVALID.\e[0m");
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} else {
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print("\e[32mConfiguration is valid.\e[0m");
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}
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set_cursor_pos(x, y);
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}
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if (current_line - window_offset < window_size) {
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int x, y;
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for (size_t i = 0; i < (window_size - (current_line - window_offset)) - 1; i++) {
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get_cursor_pos(&x, &y);
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set_cursor_pos(term_cols - 1, y);
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print("\xb3\xb3");
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}
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get_cursor_pos(&x, &y);
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set_cursor_pos(term_cols - 1, y);
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print("\xb3\xc0");
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}
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for (int i = 0; i < term_cols - 2; i++) {
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switch (i) {
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case 1: case 2: case 3:
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if (current_line - window_offset >= window_size) {
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print("\x19");
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break;
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}
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// FALLTHRU
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default:
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print("\xc4");
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}
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}
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print("\xd9");
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if (display_overflow_error) {
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print(" ERR: Text buffer not big enough, delete something instead.");
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display_overflow_error = false;
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}
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// Hack to redraw the cursor
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set_cursor_pos(cursor_x, cursor_y);
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enable_cursor();
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term_double_buffer_flush();
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int c = getchar();
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switch (c) {
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case GETCHAR_CURSOR_DOWN:
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cursor_offset = get_next_line(cursor_offset, buffer);
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break;
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case GETCHAR_CURSOR_UP:
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cursor_offset = get_prev_line(cursor_offset, buffer);
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break;
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case GETCHAR_CURSOR_LEFT:
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if (cursor_offset) {
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cursor_offset--;
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}
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break;
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case GETCHAR_CURSOR_RIGHT:
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if (cursor_offset < strlen(buffer)) {
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cursor_offset++;
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}
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break;
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case GETCHAR_HOME: {
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size_t displacement;
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get_line_offset(&displacement, cursor_offset, buffer);
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cursor_offset -= displacement;
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break;
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}
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case GETCHAR_END: {
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cursor_offset += get_line_length(cursor_offset, buffer);
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break;
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}
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case '\b':
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if (cursor_offset) {
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cursor_offset--;
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case GETCHAR_DELETE:
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for (size_t i = cursor_offset; ; i++) {
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buffer[i] = buffer[i+1];
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if (!buffer[i])
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break;
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}
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}
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break;
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case GETCHAR_F10:
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disable_cursor();
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return buffer;
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case GETCHAR_ESCAPE:
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disable_cursor();
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return NULL;
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default:
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if (strlen(buffer) < EDITOR_MAX_BUFFER_SIZE - 1) {
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for (size_t i = strlen(buffer); ; i--) {
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buffer[i+1] = buffer[i];
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if (i == cursor_offset)
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break;
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}
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buffer[cursor_offset++] = c;
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} else {
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display_overflow_error = true;
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}
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break;
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}
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goto refresh;
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}
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static int print_tree(int level, int base_index, int selected_entry,
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struct menu_entry *current_entry,
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struct menu_entry **selected_menu_entry) {
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int max_entries = 0;
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for (;;) {
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if (current_entry == NULL)
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break;
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if (level) {
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for (int i = level - 1; i > 0; i--) {
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struct menu_entry *actual_parent = current_entry;
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for (int j = 0; j < i; j++)
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actual_parent = actual_parent->parent;
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if (actual_parent->next != NULL)
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print(" \xb3");
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else
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print(" ");
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}
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if (current_entry->next == NULL)
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print(" \xc0");
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else
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print(" \xc3");
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}
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if (current_entry->sub)
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print(current_entry->expanded ? "[-]" : "[+]");
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else if (level)
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print("\xc4> ");
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else
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print(" ");
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if (base_index + max_entries == selected_entry) {
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*selected_menu_entry = current_entry;
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print("\e[47m\e[30m");
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}
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print(" %s \e[0m\n", current_entry->name);
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if (current_entry->sub && current_entry->expanded) {
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max_entries += print_tree(level + 1, base_index + max_entries + 1,
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selected_entry,
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current_entry->sub,
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selected_menu_entry);
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}
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max_entries++;
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current_entry = current_entry->next;
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}
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return max_entries;
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}
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char *menu(char **cmdline) {
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menu_branding = config_get_value(NULL, 0, "MENU_BRANDING");
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if (menu_branding == NULL)
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menu_branding = "Limine " LIMINE_VERSION;
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bool skip_timeout = false;
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struct menu_entry *selected_menu_entry = NULL;
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int selected_entry = 0;
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char *default_entry = config_get_value(NULL, 0, "DEFAULT_ENTRY");
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if (default_entry != NULL) {
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selected_entry = strtoui(default_entry, NULL, 10);
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if (selected_entry)
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selected_entry--;
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}
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int timeout = 5;
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char *timeout_config = config_get_value(NULL, 0, "TIMEOUT");
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if (timeout_config != NULL) {
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if (!strcmp(timeout_config, "no"))
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skip_timeout = true;
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else
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timeout = strtoui(timeout_config, NULL, 10);
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}
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bool editor_enabled = true;
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char *editor_enabled_config = config_get_value(NULL, 0, "EDITOR_ENABLED");
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if (!strcmp(editor_enabled_config, "no")) editor_enabled = false;
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if (!timeout) {
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// Use print tree to load up selected_menu_entry and determine if the
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// default entry is valid.
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print_tree(0, 0, selected_entry, menu_tree, &selected_menu_entry);
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if (selected_menu_entry == NULL || selected_menu_entry->sub != NULL) {
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print("Default entry is not valid or directory, booting to menu.\n");
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skip_timeout = true;
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} else {
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goto autoboot;
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}
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}
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// If there is GRAPHICS config key and the value is "yes", enable graphics
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#if defined (bios)
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char *graphics = config_get_value(NULL, 0, "GRAPHICS");
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#elif defined (uefi)
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char *graphics = "yes";
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#endif
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if (graphics != NULL && !strcmp(graphics, "yes")) {
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int req_width = 0, req_height = 0, req_bpp = 0;
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char *menu_resolution = config_get_value(NULL, 0, "MENU_RESOLUTION");
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if (menu_resolution != NULL)
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parse_resolution(&req_width, &req_height, &req_bpp, menu_resolution);
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term_vbe(req_width, req_height);
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}
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disable_cursor();
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term_double_buffer(true);
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refresh:
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clear(true);
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print("\n\n \e[36m %s \e[37m\n\n\n", menu_branding);
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if (menu_tree == NULL) {
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print("Config file %s.\n\n", config_ready ? "contains no valid entries" : "not found");
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print("For information on the format of Limine config entries, consult CONFIG.md in\n");
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print("the root of the Limine source repository.\n\n");
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print("Press a key to enter an editor session and manually define a config entry...");
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term_double_buffer_flush();
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getchar();
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char *new_body = NULL;
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while (new_body == NULL)
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new_body = config_entry_editor("New Entry", "");
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selected_menu_entry = ext_mem_alloc(sizeof(struct menu_entry));
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selected_menu_entry->body = new_body;
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config_ready = true;
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goto autoboot;
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}
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|
|
print("Select an entry:\n\n");
|
|
|
|
int max_entries = print_tree(0, 0, selected_entry, menu_tree,
|
|
&selected_menu_entry);
|
|
|
|
{
|
|
int x, y;
|
|
get_cursor_pos(&x, &y);
|
|
set_cursor_pos(0, 4);
|
|
if (editor_enabled && selected_menu_entry->sub == NULL) {
|
|
print("\n \e[32mARROWS\e[0m Select \e[32mENTER\e[0m Boot \e[32mE\e[0m Edit");
|
|
} else {
|
|
print("\n \e[32mARROWS\e[0m Select \e[32mENTER\e[0m Boot");
|
|
}
|
|
set_cursor_pos(x, y);
|
|
}
|
|
|
|
if (selected_menu_entry->sub != NULL)
|
|
skip_timeout = true;
|
|
|
|
int c;
|
|
|
|
if (skip_timeout == false) {
|
|
print("\n\n");
|
|
for (int i = timeout; i; i--) {
|
|
print("\e[2K\rBooting automatically in %u, press any key to stop the countdown...", i);
|
|
term_double_buffer_flush();
|
|
if ((c = pit_sleep_and_quit_on_keypress(1))) {
|
|
skip_timeout = true;
|
|
print("\e[2K\r\e[2A");
|
|
term_double_buffer_flush();
|
|
goto timeout_aborted;
|
|
}
|
|
}
|
|
goto autoboot;
|
|
}
|
|
|
|
term_double_buffer_flush();
|
|
|
|
for (;;) {
|
|
c = getchar();
|
|
timeout_aborted:
|
|
switch (c) {
|
|
case GETCHAR_CURSOR_UP:
|
|
if (--selected_entry == -1)
|
|
selected_entry = max_entries - 1;
|
|
goto refresh;
|
|
case GETCHAR_CURSOR_DOWN:
|
|
if (++selected_entry == max_entries)
|
|
selected_entry = 0;
|
|
goto refresh;
|
|
case GETCHAR_CURSOR_RIGHT:
|
|
case '\n':
|
|
autoboot:
|
|
if (selected_menu_entry->sub != NULL) {
|
|
selected_menu_entry->expanded = !selected_menu_entry->expanded;
|
|
goto refresh;
|
|
}
|
|
enable_cursor();
|
|
*cmdline = config_get_value(selected_menu_entry->body, 0, "KERNEL_CMDLINE");
|
|
if (!*cmdline) {
|
|
*cmdline = config_get_value(selected_menu_entry->body, 0, "CMDLINE");
|
|
}
|
|
if (!*cmdline) {
|
|
*cmdline = "";
|
|
}
|
|
clear(true);
|
|
term_double_buffer(false);
|
|
return selected_menu_entry->body;
|
|
case 'e': {
|
|
if (editor_enabled) {
|
|
if (selected_menu_entry->sub != NULL)
|
|
goto refresh;
|
|
enable_cursor();
|
|
char *new_body = config_entry_editor(selected_menu_entry->name, selected_menu_entry->body);
|
|
if (new_body == NULL)
|
|
goto refresh;
|
|
selected_menu_entry->body = new_body;
|
|
goto autoboot;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|