// This list of constants was literally cut-and-pasted from:
// https://pubs.opengroup.org/onlinepubs/8329799/chap5.htm

#define PAM_SUCCESS 0
#define PAM_OPEN_ERR 1
#define PAM_SYMBOL_ERR 2
#define PAM_SERVICE_ERR 3
#define PAM_SYSTEM_ERR 4
#define PAM_BUF_ERR 5
#define PAM_CONV_ERR 6
#define PAM_PERM_DENIED 7
#define PAM_MAXTRIES 8
#define PAM_AUTH_ERR 9
#define PAM_NEW_AUTHTOK_REQD 10
#define PAM_CRED_INSUFFICIENT 11
#define PAM_AUTHINFO_UNAVAIL 12
#define PAM_USER_UNKNOWN 13
#define PAM_CRED_UNAVAIL 14
#define PAM_CRED_EXPIRED 15
#define PAM_CRED_ERR 16
#define PAM_ACCT_EXPIRED 17
#define PAM_AUTHTOK_EXPIRED 18
#define PAM_SESSION_ERR 19
#define PAM_AUTHTOK_ERR 20
#define PAM_AUTHTOK_RECOVERY_ERR 21
#define PAM_AUTHTOK_LOCK_BUSY 22
#define PAM_AUTHTOK_DISABLE_AGING 23
#define PAM_NO_MODULE_DATA 24
#define PAM_IGNORE 25
#define PAM_ABORT 26
#define PAM_TRY_AGAIN 27
#define PAM_PROMPT_ECHO_OFF 1
#define PAM_PROMPT_ECHO_ON 2
#define PAM_ERROR_MSG 3
#define PAM_TEXT_INFO 4
#define PAM_MAX_NUM_MSG 32
#define PAM_MAX_MSG_SIZE 512
#define PAM_MAX_RESP_SIZE 512

#define PAM_SILENT 0x80000000
#define PAM_DISALLOW_NULL_AUTHTOK 0x1
#define PAM_ESTABLISH_CRED 0x1
#define PAM_DELETE_CRED 0x2
#define PAM_REINITIALISE_CRED 0x4
#define PAM_REFRESH_CRED 0x8
#define PAM_CRED_PRELIM_CHECK 0x1
#define PAM_UPDATE_AUTHTOK 0x2
#define PAM_CHANGE_EXPIRED_AUTHTOK 0x4

#define PAM_SERVICE 1
#define PAM_USER 2
#define PAM_TTY 3
#define PAM_RHOST 4
#define PAM_CONV 5
#define PAM_AUTHTOK 6
#define PAM_OLDAUTHTOK 7
#define PAM_RUSER 8
#define PAM_USER_PROMPT 9

// Some of the names in here aren't used by anybody, though.
// These aliases are, though.
#define PAM_REINITIALIZE_CRED PAM_REINITIALISE_CRED
#define PAM_PRELIM_CHECK PAM_CRED_PRELIM_CHECK