80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <syscall.h>
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#include <signal.h>
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#define LINE_LEN 1024
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void set_username() {
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FILE * passwd = fopen("/etc/passwd", "r");
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char line[LINE_LEN];
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int uid = syscall_getuid();
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while (fgets(line, LINE_LEN, passwd) != NULL) {
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line[strlen(line)-1] = '\0';
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char *p, *tokens[10], *last;
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int i = 0;
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for ((p = strtok_r(line, ":", &last)); p;
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(p = strtok_r(NULL, ":", &last)), i++) {
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if (i < 511) tokens[i] = p;
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}
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tokens[i] = NULL;
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if (atoi(tokens[2]) == uid) {
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setenv("USER", tokens[0], 1);
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}
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}
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fclose(passwd);
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}
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void set_homedir() {
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char * user = getenv("USER");
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if (user) {
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char path[512];
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sprintf(path,"/home/%s", user);
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setenv("HOME",path,1);
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} else {
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setenv("HOME","/",1);
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}
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}
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void set_path() {
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setenv("PATH", "/bin", 0);
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}
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int main(int argc, char * argv[]) {
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/* Starts a graphical session and then spins waiting for a kill (logout) signal */
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/* Load some session variables */
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set_username();
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set_homedir();
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set_path();
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int _wallpaper_pid = fork();
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if (!_wallpaper_pid) {
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char * args[] = {"/bin/wallpaper", NULL};
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execvp(args[0], args);
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}
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int _panel_pid = fork();
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if (!_panel_pid) {
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char * args[] = {"/bin/panel", NULL};
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execvp(args[0], args);
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}
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syscall_wait(_panel_pid);
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printf("Session leader has exited. Sending INT signals to %d.\n", _wallpaper_pid);
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kill(_wallpaper_pid, SIGINT);
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printf("Waiting on wallpaper.\n");
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syscall_wait(_wallpaper_pid);
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printf("Session has ended.\n");
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}
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