3bccdfdd673ec0ba7a802369e8701f96857fc2e2
[mirrors/pam-ftpfuck.git] / src / mypam.c
1 //Harvie 2o11 - Warning: Not bulletproof yet!
2 #define ENV_PREFIX "JAIL_"
3 #define DEFAULT_JAIL "/var/ssh-chroot"
4
5 #include <stdio.h>
6 #include <stdlib.h>
7
8 #define PAM_SM_SESSION
9 #include <security/pam_modules.h>
10
11 PAM_EXTERN int pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv) {
12 const char* user;
13 pam_get_user(pamh, &user, "login: ");
14 //printf("Welcome %s\n", user);
15
16 setenv(ENV_PREFIX "USER", user, 1);
17 setenv(ENV_PREFIX "DIR", DEFAULT_JAIL, 1);
18 if(argc > 0) setenv(ENV_PREFIX "DIR", argv[0], 1);
19
20
21 //system("echo start $HOME; echo a && true && echo b && false && echo c");
22 setuid(0); setgid(0);
23 system("mkdir -p \"$JAIL_DIR/$JAIL_USER/$JAIL_USER\"");
24 system("chown root:root \"$JAIL_DIR/$JAIL_USER\"");
25 system("chown \"$JAIL_USER:$JAIL_USER\" \"$JAIL_DIR/$JAIL_USER/$JAIL_USER\"");
26 system("mountpoint -q \"$JAIL_DIR/$JAIL_USER/$JAIL_USER\" || mount -o bind \"$HOME\" \"$JAIL_DIR/$JAIL_USER/$JAIL_USER\"");
27
28 return PAM_SUCCESS; //PAM_SESSION_ERR | PAM_SUCCESS
29 }
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