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Diffstat (limited to 'modules/pam_unix/support.h')
| -rw-r--r-- | modules/pam_unix/support.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/modules/pam_unix/support.h b/modules/pam_unix/support.h new file mode 100644 index 0000000..19754dc --- /dev/null +++ b/modules/pam_unix/support.h @@ -0,0 +1,182 @@ +/* + * $Id$ + */ + +#ifndef _PAM_UNIX_SUPPORT_H +#define _PAM_UNIX_SUPPORT_H + +#include <pwd.h> + +/* + * File to read value of ENCRYPT_METHOD from. + */ +#define LOGIN_DEFS "/etc/login.defs" + + +/* + * here is the string to inform the user that the new passwords they + * typed were not the same. + */ + +/* type definition for the control options */ + +typedef struct { + const char *token; + unsigned long long mask; /* shall assume 64 bits of flags */ + unsigned long long flag; + unsigned int is_hash_algo; +} UNIX_Ctrls; + +/* + * macro to determine if a given flag is on + */ + +#define on(x,ctrl) (unix_args[x].flag & ctrl) + +/* + * macro to determine that a given flag is NOT on + */ + +#define off(x,ctrl) (!on(x,ctrl)) + +/* + * macro to turn on/off a ctrl flag manually + */ + +#define set(x,ctrl) (ctrl = ((ctrl)&unix_args[x].mask)|unix_args[x].flag) +#define unset(x,ctrl) (ctrl &= ~(unix_args[x].flag)) + +/* the generic mask */ + +#define _ALL_ON_ (~0ULL) + +/* end of macro definitions definitions for the control flags */ + +/* ****************************************************************** * + * ctrl flags proper.. + */ + +/* + * here are the various options recognized by the unix module. They + * are enumerated here and then defined below. Internal arguments are + * given NULL tokens. + */ + +#define UNIX__OLD_PASSWD 0 /* internal */ +#define UNIX__VERIFY_PASSWD 1 /* internal */ +#define UNIX__IAMROOT 2 /* internal */ + +#define UNIX_AUDIT 3 /* print more things than debug.. + some information may be sensitive */ +#define UNIX_USE_FIRST_PASS 4 +#define UNIX_TRY_FIRST_PASS 5 +#define UNIX_AUTHTOK_TYPE 6 /* TYPE for pam_get_authtok() */ + +#define UNIX__PRELIM 7 /* internal */ +#define UNIX__UPDATE 8 /* internal */ +#define UNIX__NONULL 9 /* internal */ +#define UNIX__QUIET 10 /* internal */ +#define UNIX_USE_AUTHTOK 11 /* insist on reading PAM_AUTHTOK */ +#define UNIX_SHADOW 12 /* signal shadow on */ +#define UNIX_MD5_PASS 13 /* force the use of MD5 passwords */ +#define UNIX__NULLOK 14 /* Null token ok */ +#define UNIX_DEBUG 15 /* send more info to syslog(3) */ +#define UNIX_NODELAY 16 /* admin does not want a fail-delay */ +#define UNIX_NIS 17 /* wish to use NIS for pwd */ +#define UNIX_BIGCRYPT 18 /* use DEC-C2 crypt()^x function */ +#define UNIX_LIKE_AUTH 19 /* need to auth for setcred to work */ +#define UNIX_REMEMBER_PASSWD 20 /* Remember N previous passwords */ +#define UNIX_NOREAP 21 /* don't reap child process */ +#define UNIX_BROKEN_SHADOW 22 /* ignore errors reading password aging + * information during acct management */ +#define UNIX_SHA256_PASS 23 /* new password hashes will use SHA256 */ +#define UNIX_SHA512_PASS 24 /* new password hashes will use SHA512 */ +#define UNIX_ALGO_ROUNDS 25 /* optional number of rounds for new + password hash algorithms */ +#define UNIX_BLOWFISH_PASS 26 /* new password hashes will use blowfish */ +#define UNIX_MIN_PASS_LEN 27 /* min length for password */ +#define UNIX_QUIET 28 /* Don't print informational messages */ +#define UNIX_NO_PASS_EXPIRY 29 /* Don't check for password expiration if not used for authentication */ +#define UNIX_DES 30 /* DES, default */ +#define UNIX_GOST_YESCRYPT_PASS 31 /* new password hashes will use gost-yescrypt */ +#define UNIX_YESCRYPT_PASS 32 /* new password hashes will use yescrypt */ +#define UNIX_NULLRESETOK 33 /* allow empty password if password reset is enforced */ +/* -------------- */ +#define UNIX_CTRLS_ 34 /* number of ctrl arguments defined */ + +#define UNIX_DES_CRYPT(ctrl) (off(UNIX_MD5_PASS,ctrl)&&off(UNIX_BIGCRYPT,ctrl)&&off(UNIX_SHA256_PASS,ctrl)&&off(UNIX_SHA512_PASS,ctrl)&&off(UNIX_BLOWFISH_PASS,ctrl)&&off(UNIX_GOST_YESCRYPT_PASS,ctrl)&&off(UNIX_YESCRYPT_PASS,ctrl)) + +static const UNIX_Ctrls unix_args[UNIX_CTRLS_] = +{ +/* symbol token name ctrl mask ctrl * + * --------------------------- -------------------- ------------------------- ---------------- */ + +/* UNIX__OLD_PASSWD */ {NULL, _ALL_ON_, 01, 0}, +/* UNIX__VERIFY_PASSWD */ {NULL, _ALL_ON_, 02, 0}, +/* UNIX__IAMROOT */ {NULL, _ALL_ON_, 04, 0}, +/* UNIX_AUDIT */ {"audit", _ALL_ON_, 010, 0}, +/* UNIX_USE_FIRST_PASS */ {"use_first_pass", _ALL_ON_^(060ULL), 020, 0}, +/* UNIX_TRY_FIRST_PASS */ {"try_first_pass", _ALL_ON_^(060ULL), 040, 0}, +/* UNIX_AUTHTOK_TYPE */ {"authtok_type=", _ALL_ON_, 0100, 0}, +/* UNIX__PRELIM */ {NULL, _ALL_ON_^(0600ULL), 0200, 0}, +/* UNIX__UPDATE */ {NULL, _ALL_ON_^(0600ULL), 0400, 0}, +/* UNIX__NONULL */ {NULL, _ALL_ON_, 01000, 0}, +/* UNIX__QUIET */ {NULL, _ALL_ON_, 02000, 0}, +/* UNIX_USE_AUTHTOK */ {"use_authtok", _ALL_ON_, 04000, 0}, +/* UNIX_SHADOW */ {"shadow", _ALL_ON_, 010000, 0}, +/* UNIX_MD5_PASS */ {"md5", _ALL_ON_^(015660420000ULL), 020000, 1}, +/* UNIX__NULLOK */ {"nullok", _ALL_ON_^(01000ULL), 0, 0}, +/* UNIX_DEBUG */ {"debug", _ALL_ON_, 040000, 0}, +/* UNIX_NODELAY */ {"nodelay", _ALL_ON_, 0100000, 0}, +/* UNIX_NIS */ {"nis", _ALL_ON_, 0200000, 0}, +/* UNIX_BIGCRYPT */ {"bigcrypt", _ALL_ON_^(015660420000ULL), 0400000, 1}, +/* UNIX_LIKE_AUTH */ {"likeauth", _ALL_ON_, 01000000, 0}, +/* UNIX_REMEMBER_PASSWD */ {"remember=", _ALL_ON_, 02000000, 0}, +/* UNIX_NOREAP */ {"noreap", _ALL_ON_, 04000000, 0}, +/* UNIX_BROKEN_SHADOW */ {"broken_shadow", _ALL_ON_, 010000000, 0}, +/* UNIX_SHA256_PASS */ {"sha256", _ALL_ON_^(015660420000ULL), 020000000, 1}, +/* UNIX_SHA512_PASS */ {"sha512", _ALL_ON_^(015660420000ULL), 040000000, 1}, +/* UNIX_ALGO_ROUNDS */ {"rounds=", _ALL_ON_, 0100000000, 0}, +/* UNIX_BLOWFISH_PASS */ {"blowfish", _ALL_ON_^(015660420000ULL), 0200000000, 1}, +/* UNIX_MIN_PASS_LEN */ {"minlen=", _ALL_ON_, 0400000000, 0}, +/* UNIX_QUIET */ {"quiet", _ALL_ON_, 01000000000, 0}, +/* UNIX_NO_PASS_EXPIRY */ {"no_pass_expiry", _ALL_ON_, 02000000000, 0}, +/* UNIX_DES */ {"des", _ALL_ON_^(015660420000ULL), 0, 1}, +/* UNIX_GOST_YESCRYPT_PASS */ {"gost_yescrypt", _ALL_ON_^(015660420000ULL), 04000000000, 1}, +/* UNIX_YESCRYPT_PASS */ {"yescrypt", _ALL_ON_^(015660420000ULL), 010000000000, 1}, +/* UNIX_NULLRESETOK */ {"nullresetok", _ALL_ON_, 020000000000, 0}, +}; + +#define UNIX_DEFAULTS (unix_args[UNIX__NONULL].flag) + +/* use this to free strings. ESPECIALLY password strings */ + +#define _pam_delete(xx) \ +{ \ + _pam_overwrite(xx); \ + _pam_drop(xx); \ +} + +extern int _make_remark(pam_handle_t * pamh, unsigned long long ctrl, + int type, const char *text); +extern unsigned long long _set_ctrl(pam_handle_t * pamh, int flags, + int *remember, int *rounds, + int *pass_min_len, + int argc, const char **argv); +extern int _unix_getpwnam (pam_handle_t *pamh, + const char *name, int files, int nis, + struct passwd **ret); +extern int _unix_comesfromsource (pam_handle_t *pamh, + const char *name, int files, int nis); +extern int _unix_blankpasswd(pam_handle_t *pamh, unsigned long long ctrl, + const char *name); +extern int _unix_verify_password(pam_handle_t * pamh, const char *name, + const char *p, unsigned long long ctrl); + +extern int _unix_verify_user(pam_handle_t *pamh, unsigned long long ctrl, + const char *name, int *daysleft); + +extern int _unix_run_verify_binary(pam_handle_t *pamh, + unsigned long long ctrl, + const char *user, int *daysleft); +#endif /* _PAM_UNIX_SUPPORT_H */ |