1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
#include <ncurses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_LINES 1024
#define MAX_LINE_LEN 512
char *lines[MAX_LINES];
int total_lines = 0;
int current_line = 0;
void load_hosts_file() {
FILE *fp = fopen("/etc/hosts", "r");
if (!fp) exit(1);
char buffer[MAX_LINE_LEN];
while (fgets(buffer, sizeof(buffer), fp) && total_lines < MAX_LINES) {
lines[total_lines] = strdup(buffer);
total_lines++;
}
fclose(fp);
}
void cleanup() {
for (int i = 0; i < total_lines; i++) {
free(lines[i]);
}
}
void draw_screen() {
clear();
int max_y, max_x;
getmaxyx(stdscr, max_y, max_x);
for (int i = 0; i < max_y && (i + current_line) < total_lines; i++) {
mvprintw(i, 0, "%s", lines[i + current_line]);
}
refresh();
}
int main() {
load_hosts_file();
initscr();
noecho();
cbreak();
keypad(stdscr, TRUE);
int ch;
draw_screen();
while ((ch = getch()) != 'q') {
switch (ch) {
case 'j':
if (current_line < total_lines - 1) current_line++;
break;
case 'k':
if (current_line > 0) current_line--;
break;
case 'c': {
for (int i = 0; i < total_lines; i++) {
if (lines[i][0] == '\n' || lines[i][0] == '#') {
free(lines[i]);
lines[i] = NULL;
}
}
int new_total_lines = 0;
for (int i = 0; i < total_lines; i++) {
if (lines[i] != NULL) {
lines[new_total_lines++] = lines[i];
}
}
total_lines = new_total_lines;
draw_screen();
break;
case 'a': {
echo();
char url[256];
mvprintw(LINES - 1, 0, "URL oder Pfad: ");
getnstr(url, 255);
noecho();
char tmpfile[] = "/tmp/hosts_tmp_XXXXXX";
int fd = mkstemp(tmpfile);
close(fd);
char cmd[512];
snprintf(cmd, sizeof(cmd), "curl -fsSL '%s' -o %s", url, tmpfile);
if (system(cmd) == 0) {
FILE *fp = fopen(tmpfile, "r");
if (fp) {
char buffer[MAX_LINE_LEN];
while (fgets(buffer, sizeof(buffer), fp) && total_lines < MAX_LINES) {
lines[total_lines++] = strdup(buffer);
}
fclose(fp);
}
}
unlink(tmpfile);
draw_screen();
break;
}
}
draw_screen();
}
endwin();
cleanup();
return 0;
}
|
