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You can now do --help and -h. also they work better yay

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Luna Magdalena :3 2025-11-17 15:22:46 -03:00
parent be7550436f
commit 419859a366
1 changed files with 14 additions and 21 deletions
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35
kissy.c
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@ -1,4 +1,4 @@
// KISSY (Kissing Interface for Sapphic Smooching over ttY) v1.0 // KISSY (Kissing Interface for Sapphic Smooching over ttY) v1.1
/* /*
Copyright (C) 2025 Magdalunaa <magdalunaa@linuxposting.xyz> Copyright (C) 2025 Magdalunaa <magdalunaa@linuxposting.xyz>
@ -17,17 +17,6 @@
along with this program. If not, see <https://www.gnu.org/licenses/>. along with this program. If not, see <https://www.gnu.org/licenses/>.
*/ */
/*
This file needs to:
- be owned by the tty group (or whatever group owns the terminal devices in your system)
- have setgid set
- be group executable
- not be world writeable
You can probably just use 2755 permissions. those work
*/
#include <stdio.h> #include <stdio.h>
#include <unistd.h> #include <unistd.h>
#include <sys/types.h> #include <sys/types.h>
@ -35,25 +24,29 @@ You can probably just use 2755 permissions. those work
#include <dirent.h> #include <dirent.h>
#include <string.h> #include <string.h>
#include <pwd.h> #include <pwd.h>
#include <stdbool.h>
// mreowww meow nya :3 // mreowww meow nya :3
int main (int argc, char **argv) { int main (int argc, char **argv) {
// print help
if (argc < 2 || strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) {
printf("%s\n", "Usage: kissy [target] <message>\n\n"
"Kissy is a utility that allows you to kiss currently logged in users who allow messages.\n"
"It works by writing to files in /dev/pts. It needs to run as the group who owns said files (usually tty), using setgid (2755 permissions).");
return 0;
}
// are we running with setgid? // are we running with setgid?
struct stat stat_self; struct stat stat_self;
stat("/proc/self/exe", &stat_self); stat("/proc/self/exe", &stat_self);
if (!(stat_self.st_mode & S_ISGID && !(stat_self.st_mode & S_IWOTH))) { if (!(stat_self.st_mode & S_ISGID && !(stat_self.st_mode & S_IWOTH))) {
printf("%s\n", "setgid is not set, or this file is world writeable."); printf("%s\n", "setgid is not set, or this file is world writable.");
return 3; return 3;
} }
// check we have at least one argument
if (argc < 2) {
printf("%s\n", "Not enough arguments!\nUsage: kissy [target] <message>");
return 0;
}
// try to find the target's uid // try to find the target's uid
struct passwd *pw = getpwnam(argv[1]); struct passwd *pw = getpwnam(argv[1]);
if (pw == NULL) { if (pw == NULL) {
@ -77,7 +70,7 @@ int main (int argc, char **argv) {
else else
kiss = "*mwah*"; kiss = "*mwah*";
short kissed = 0; bool kissed = false;
// iterate over all files in directory // iterate over all files in directory
DIR *dir = opendir("/dev/pts"); DIR *dir = opendir("/dev/pts");
while (1) { while (1) {
@ -94,7 +87,7 @@ int main (int argc, char **argv) {
// find all terminals with the correct user and that are group-writable // find all terminals with the correct user and that are group-writable
if (stats.st_mode & S_IWGRP && stats.st_uid == target) { if (stats.st_mode & S_IWGRP && stats.st_uid == target) {
kissed = 1; kissed = true;
if (stats.st_gid != getegid()) { // are we running as the tty user? if (stats.st_gid != getegid()) { // are we running as the tty user?
printf("%s\n", "Mismatch between file owner group and current effective group. Make sure this program is running with setgid."); printf("%s\n", "Mismatch between file owner group and current effective group. Make sure this program is running with setgid.");