Fastcgi wrapper not working with root permisions - wrapper

Question

i have problem setting fastcgi wrapper to execute commands from web as root
only settings i have changed
FCGI_USER="root"
FCGI_GROUP="root"
[....] Starting FastCGI wrapper: fcgiwrapspawn-fcgi: I will not set uid to 0
failed!
i want to manipulate with gpio through web with wiringPi, but wiringPisetup requires root access
any ideas?

Answer 1

spawn-fcgi (https://github.com/lighttpd/spawn-fcgi) is the problem.
Apply this patch to src/spawn-fcgi.c and recompile spawn-fcgi. In my case I wanted to run nmap -sS which requires root. It really grinds my gears when developers decide to make running as root impossible because it's just a waste of everyone's time. Always add a flag, call it --super-insecure if you want to but at least put it there!
diff --git a/src/spawn-fcgi.c b/src/spawn-fcgi.c
index 2f320f7..27176d5 100644
--- a/src/spawn-fcgi.c
+++ b/src/spawn-fcgi.c
## -385,10 +385,10 ## static int find_user_group(const char *user, const char *group, uid_t *uid, gid_
}
my_uid = my_pwd->pw_uid;
- if (my_uid == 0) {
+ /*if (my_uid == 0) {
fprintf(stderr, "spawn-fcgi: I will not set uid to 0\n");
return -1;
- }
+ }*/
if (username) *username = user;
} else {
## -407,18 +407,18 ## static int find_user_group(const char *user, const char *group, uid_t *uid, gid_
}
my_gid = my_grp->gr_gid;
- if (my_gid == 0) {
+ /*if (my_gid == 0) {
fprintf(stderr, "spawn-fcgi: I will not set gid to 0\n");
return -1;
- }
+ }*/
}
} else if (my_pwd) {
my_gid = my_pwd->pw_gid;
- if (my_gid == 0) {
+ /*if (my_gid == 0) {
fprintf(stderr, "spawn-fcgi: I will not set gid to 0\n");
return -1;
- }
+ }*/
}
*uid = my_uid;