diff options
Diffstat (limited to 'ipa-server')
| -rw-r--r-- | ipa-server/ipa-install/share/Makefile.am | 1 | ||||
| -rw-r--r-- | ipa-server/ipa-install/share/default-aci.ldif | 5 | ||||
| -rw-r--r-- | ipa-server/ipa-install/share/default-keytypes.ldif | 20 | ||||
| -rw-r--r-- | ipa-server/ipa-install/share/kdc.conf.template | 2 | ||||
| -rw-r--r-- | ipa-server/ipa-install/share/kerberos.ldif | 1 | ||||
| -rw-r--r-- | ipa-server/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c | 1666 | ||||
| -rw-r--r-- | ipa-server/ipaserver/krbinstance.py | 5 |
7 files changed, 1196 insertions, 504 deletions
diff --git a/ipa-server/ipa-install/share/Makefile.am b/ipa-server/ipa-install/share/Makefile.am index 5d117dec5..4908d35a9 100644 --- a/ipa-server/ipa-install/share/Makefile.am +++ b/ipa-server/ipa-install/share/Makefile.am @@ -8,6 +8,7 @@ app_DATA = \ 60ipaconfig.ldif \ bootstrap-template.ldif \ default-aci.ldif \ + default-keytypes.ldif \ kerberos.ldif \ indeces.ldif \ bind.named.conf.template \ diff --git a/ipa-server/ipa-install/share/default-aci.ldif b/ipa-server/ipa-install/share/default-aci.ldif index 5715259a1..1f1409e13 100644 --- a/ipa-server/ipa-install/share/default-aci.ldif +++ b/ipa-server/ipa-install/share/default-aci.ldif @@ -3,8 +3,9 @@ dn: $SUFFIX changetype: modify replace: aci -aci: (targetattr != "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory || krbMkey")(version 3.0; acl "Enable Anonymous access"; allow (read, search, compare) userdn = "ldap:///anyone";) -aci: (targetattr != "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory || krbMkey")(version 3.0; acl "Admin can manage any entry"; allow (all) userdn = "ldap:///uid=admin,cn=sysaccounts,cn=etc,$SUFFIX";) +aci: (targetattr = "krbMKey")(version 3.0; acl "Only the kerberos account can access this one"; deny (read, search, compare, write) userdn != "ldap:///uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX";) +aci: (targetattr != "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "Enable Anonymous access"; allow (read, search, compare) userdn = "ldap:///anyone";) +aci: (targetattr != "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "Admin can manage any entry"; allow (all) userdn = "ldap:///uid=admin,cn=sysaccounts,cn=etc,$SUFFIX";) aci: (targetattr = "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "Admins can write passwords"; allow (write) groupdn="ldap:///cn=admins,cn=groups,cn=accounts,$SUFFIX";) aci: (targetattr = "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "Password change service can read/write passwords"; allow (read, write) userdn="ldap:///krbprincipalname=kadmin/changepw@$REALM,cn=$REALM,cn=kerberos,$SUFFIX";) aci: (targetattr = "userPassword || krbPrincipalKey || sambaLMPassword || sambaNTPassword || passwordHistory")(version 3.0; acl "KDC System Account can access passwords"; allow (all) userdn="ldap:///uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX";) diff --git a/ipa-server/ipa-install/share/default-keytypes.ldif b/ipa-server/ipa-install/share/default-keytypes.ldif new file mode 100644 index 000000000..9cafacd35 --- /dev/null +++ b/ipa-server/ipa-install/share/default-keytypes.ldif @@ -0,0 +1,20 @@ +#kerberos keytypes +dn: cn=$REALM,cn=kerberos,$SUFFIX +changetype: modify +add: krbSupportedEncSaltTypes +krbSupportedEncSaltTypes: aes256-cts:normal +krbSupportedEncSaltTypes: aes128-cts:normal +krbSupportedEncSaltTypes: des3-hmac-sha1:normal +krbSupportedEncSaltTypes: arcfour-hmac:normal +krbSupportedEncSaltTypes: des-hmac-sha1:normal +krbSupportedEncSaltTypes: des-cbc-md5:normal +krbSupportedEncSaltTypes: des-cbc-crc:normal +krbSupportedEncSaltTypes: des-cbc-crc:v4 +krbSupportedEncSaltTypes: des-cbc-crc:afs3 +krbDefaultEncSaltTypes: aes256-cts:normal +krbDefaultEncSaltTypes: aes128-cts:normal +krbDefaultEncSaltTypes: des3-hmac-sha1:normal +krbDefaultEncSaltTypes: arcfour-hmac:normal +krbDefaultEncSaltTypes: des-hmac-sha1:normal +krbDefaultEncSaltTypes: des-cbc-md5:normal + diff --git a/ipa-server/ipa-install/share/kdc.conf.template b/ipa-server/ipa-install/share/kdc.conf.template index 69e769e34..0ac4d4670 100644 --- a/ipa-server/ipa-install/share/kdc.conf.template +++ b/ipa-server/ipa-install/share/kdc.conf.template @@ -4,7 +4,7 @@ [realms] $REALM = { master_key_type = des3-hmac-sha1 - supported_enctypes = des3-hmac-sha1:normal arcfour-hmac:normal des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal des-cbc-crc:v4 des-cbc-crc:afs3 + supported_enctypes = aes256-cts:normal aes128-cts:normal des3-hmac-sha1:normal arcfour-hmac:normal des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal des-cbc-crc:v4 des-cbc-crc:afs3 max_life = 7d max_renewable_life = 14d acl_file = /var/kerberos/krb5kdc/kadm5.acl diff --git a/ipa-server/ipa-install/share/kerberos.ldif b/ipa-server/ipa-install/share/kerberos.ldif index 75057aa3a..f1b651d5a 100644 --- a/ipa-server/ipa-install/share/kerberos.ldif +++ b/ipa-server/ipa-install/share/kerberos.ldif @@ -14,4 +14,3 @@ objectClass: top cn: kerberos aci: (targetattr="*")(version 3.0; acl "KDC System Account"; allow (all) userdn= "ldap:///uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX";) - diff --git a/ipa-server/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c b/ipa-server/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c index 0d87b2ba2..782eee76f 100644 --- a/ipa-server/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c +++ b/ipa-server/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c @@ -84,15 +84,13 @@ /* ber tags for the PasswdModifyResponseValue sequence */ #define LDAP_EXTOP_PASSMOD_TAG_GENPWD 0x80U -/* number of bytes used for random password generation */ -#define LDAP_EXTOP_PASSMOD_GEN_PASSWD_LEN 8 - -/* number of random bytes needed to generate password */ -#define LDAP_EXTOP_PASSMOD_RANDOM_BYTES 6 - /* OID of the extended operation handled by this plug-in */ #define EXOP_PASSWD_OID "1.3.6.1.4.1.4203.1.11.1" +/* OID to retrieve keytabs */ +#define KEYTAB_SET_OID "2.16.840.1.113730.3.8.3.1" +#define KEYTAB_RET_OID "2.16.840.1.113730.3.8.3.2" + /* krbTicketFlags */ #define KTF_DISALLOW_POSTDATED 0x00000001 #define KTF_DISALLOW_FORWARDABLE 0x00000002 @@ -122,23 +120,150 @@ #define KRB5P_SALT_SIZE 16 -struct krb5p_keysalt { +static const char *ipapwd_def_encsalts[] = { + "des3-hmac-sha1:normal", +/* "arcfour-hmac:normal", + "des-hmac-sha1:normal", + "des-cbc-md5:normal", */ + "des-cbc-crc:normal", +/* "des-cbc-crc:v4", + "des-cbc-crc:afs3", */ + NULL +}; + +struct ipapwd_encsalt { krb5_int32 enc_type; krb5_int32 salt_type; }; +struct ipapwd_config { + char *realm; + krb5_keyblock *kmkey; + int num_supp_encsalts; + struct ipapwd_encsalt *supp_encsalts; + int num_pref_encsalts; + struct ipapwd_encsalt *pref_encsalts; +}; + +static const char *ipa_realm_dn = NULL; + +Slapi_Mutex *ipa_globals = NULL; + +static struct ipapwd_config *ipapwd_config = NULL; + static void *ipapwd_plugin_id; +#define IPA_CHANGETYPE_NORMAL 0 +#define IPA_CHANGETYPE_ADMIN 1 +#define IPA_CHANGETYPE_DSMGR 2 -const char *ipa_realm_dn = NULL; -const char *ipa_realm = NULL; -struct krb5p_keysalt *ipa_keysalts = NULL; -int ipa_n_keysalts = 0; +struct ipapwd_data { + Slapi_Entry *target; + const char *dn; + const char *password; + time_t timeNow; + time_t lastPwChange; + time_t expireTime; + int changetype; + int pwHistoryLen; +}; -Slapi_Mutex *ipa_globals = NULL; -krb5_keyblock *ipa_kmkey = NULL; +struct ipapwd_krbkeydata { + int32_t type; + struct berval value; +}; + +struct ipapwd_krbkey { + struct ipapwd_krbkeydata *salt; + struct ipapwd_krbkeydata *ekey; + struct berval s2kparams; +}; + +struct ipapwd_keyset { + uint16_t major_vno; + uint16_t minor_vno; + uint32_t kvno; + uint32_t mkvno; + struct ipapwd_krbkey *keys; + int num_keys; +}; + +static void ipapwd_keyset_free(struct ipapwd_keyset **pkset) +{ + struct ipapwd_keyset *kset = *pkset; + int i; -static int ipapwd_getMasterKey(const char *realm_dn); + if (!kset) return; + + for (i = 0; i < kset->num_keys; i++) { + if (kset->keys[i].salt) { + if (kset->keys[i].salt->value.bv_val) { + free(kset->keys[i].salt->value.bv_val); + } + free(kset->keys[i].salt); + } + if (kset->keys[i].ekey) { + if (kset->keys[i].ekey->value.bv_val) { + free(kset->keys[i].ekey->value.bv_val); + } + free(kset->keys[i].ekey); + } + if (kset->keys[i].s2kparams.bv_val) { + free(kset->keys[i].s2kparams.bv_val); + } + } + free(kset->keys); + free(kset); + *pkset = NULL; +} + +static int filter_keys(struct ipapwd_keyset *kset) +{ + struct ipapwd_config *config; + int i, j; + + slapi_lock_mutex(ipa_globals); + config = ipapwd_config; + slapi_unlock_mutex(ipa_globals); + + for (i = 0; i < kset->num_keys; i++) { + for (j = 0; j < config->num_supp_encsalts; j++) { + if (kset->keys[i].ekey->type == config->supp_encsalts[j].enc_type) break; + } + if (j == config->num_supp_encsalts) { /* not valid */ + + /* free key */ + if (kset->keys[i].ekey) { + if (kset->keys[i].ekey->value.bv_val) { + free(kset->keys[i].ekey->value.bv_val); + } + free(kset->keys[i].ekey); + } + if (kset->keys[i].salt) { + if (kset->keys[i].salt->value.bv_val) { + free(kset->keys[i].salt->value.bv_val); + } + free(kset->keys[i].salt); + } + if (kset->keys[i].s2kparams.bv_val) { + free(kset->keys[i].s2kparams.bv_val); + } + + /* move all remaining keys up by one */ + kset->num_keys -= 1; + + for (j = i; j < kset->num_keys; j++) { + kset->keys[j] = kset->keys[j + 1]; + } + + /* new key has been moved to this position, make sure + * we do not skip it, by neutralizing next i increment */ + i--; + } + } + + return 0; +} /* Novell key-format scheme: @@ -170,187 +295,197 @@ static int ipapwd_getMasterKey(const char *realm_dn); */ -struct kbvals { - ber_int_t kvno; - const struct berval *bval; -}; - -static int cmpkbvals(const void *p1, const void *p2) -{ - const struct kbvals *k1, *k2; - - k1 = (struct kbvals *)p1; - k2 = (struct kbvals *)p2; - - return (((int)k1->kvno) - ((int)k2->kvno)); -} - -static inline void encode_int16(unsigned int val, unsigned char *p) -{ - p[1] = (val >> 8) & 0xff; - p[0] = (val ) & 0xff; -} - -#define IPA_CHANGETYPE_NORMAL 0 -#define IPA_CHANGETYPE_ADMIN 1 -#define IPA_CHANGETYPE_DSMGR 2 - -struct ipapwd_data { - Slapi_Entry *target; - const char *dn; - const char *password; - time_t timeNow; - time_t lastPwChange; - time_t expireTime; - int changetype; - int pwHistoryLen; -}; - -static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data *data) +static struct berval *encode_keys(struct ipapwd_keyset *kset) { - krb5_keyblock *kmkey; - const char *krbPrincipalName; - uint32_t krbMaxTicketLife; - Slapi_Attr *krbPrincipalKey = NULL; - struct kbvals *kbvals = NULL; - time_t time_now; - int kvno; - int num_versions, num_keys; - int krbTicketFlags; BerElement *be = NULL; struct berval *bval = NULL; - Slapi_Value **svals = NULL; - int svals_no; - krb5_principal princ; - krb5_error_code krberr; - krb5_data pwd; int ret, i; - slapi_lock_mutex(ipa_globals); - kmkey = ipa_kmkey; - slapi_unlock_mutex(ipa_globals); - - time_now = time(NULL); + be = ber_alloc_t(LBER_USE_DER); - krbPrincipalName = slapi_entry_attr_get_charptr(data->target, "krbPrincipalName"); - if (!krbPrincipalName) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "no krbPrincipalName present in this entry\n"); + if (!be) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "memory allocation failed\n"); return NULL; } - krbMaxTicketLife = slapi_entry_attr_get_uint(data->target, "krbMaxTicketLife"); - if (krbMaxTicketLife == 0) { - /* FIXME: retrieve the default from config (max_life from kdc.conf) */ - krbMaxTicketLife = 86400; /* just set the default 24h for now */ + ret = ber_printf(be, "{t[i]t[i]t[i]t[i]t[{", + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), kset->major_vno, + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), kset->minor_vno, + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 2), kset->kvno, + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 3), kset->mkvno, + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 4)); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 vno info failed\n"); + goto done; } - kvno = 0; - num_keys = 0; - num_versions = 1; + for (i = 0; i < kset->num_keys; i++) { - /* retrieve current kvno and and keys */ - ret = slapi_entry_attr_find(data->target, "krbPrincipalKey", &krbPrincipalKey); - if (ret == 0) { - int i, n, count, idx; - ber_int_t tkvno; - Slapi_ValueSet *svs; - Slapi_Value *sv; - ber_tag_t tag, tmp; - const struct berval *cbval; - - slapi_attr_get_valueset(krbPrincipalKey, &svs); - count = slapi_valueset_count(svs); - if (count > 0) { - kbvals = (struct kbvals *)calloc(count, sizeof(struct kbvals)); + ret = ber_printf(be, "{"); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 EncryptionKey failed\n"); + goto done; } - n = 0; - for (i = 0, idx = 0; count > 0 && i < count; i++) { - if (i == 0) { - idx = slapi_valueset_first_value(svs, &sv); - } else { - idx = slapi_valueset_next_value(svs, idx, &sv); - } - if (idx == -1) { - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", - "Array of stored keys shorter than expected\n"); - break; - } - cbval = slapi_value_get_berval(sv); - if (!cbval) { - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", - "Error retrieving berval from Slapi_Value\n"); - continue; + + if (kset->keys[i].salt) { + ret = ber_printf(be, "t[{t[i]", + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), + kset->keys[i].salt->type); + if ((ret != -1) && kset->keys[i].salt->value.bv_len) { + ret = ber_printf(be, "t[o]", + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), + kset->keys[i].salt->value.bv_val, + kset->keys[i].salt->value.bv_len); + } + if (ret != -1) { + ret = ber_printf(be, "}]"); } - be = ber_init(cbval); - if (!be) { - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", - "ber_init() failed!\n"); - continue; + if (ret == -1) { + goto done; } + } - tag = ber_scanf(be, "{xxt[i]", &tmp, &tkvno); - if (tag == LBER_ERROR) { - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", - "Bad OLD key encoding ?!\n"); - ber_free(be, 1); - continue; - } + ret = ber_printf(be, "t[{t[i]t[o]}]", + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), + kset->keys[i].ekey->type, + (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), + kset->keys[i].ekey->value.bv_val, + kset->keys[i].ekey->value.bv_len); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 EncryptionKey failed\n"); + goto done; + } - kbvals[n].kvno = tkvno; - kbvals[n].bval = cbval; - n++; + /* FIXME: s2kparams not supported yet */ - if (tkvno > kvno) { - kvno = tkvno; - } + ret = ber_printf(be, "}"); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 EncryptionKey failed\n"); + goto done; + } + } - ber_free(be, 1); + ret = ber_printf(be, "}]}"); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 end of sequences failed\n"); + goto done; + } + + ret = ber_flatten(be, &bval); + if (ret == -1) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "flattening asn1 failed\n"); + goto done; + } +done: + ber_free(be, 1); + + return bval; +} + +static int ipapwd_get_cur_kvno(Slapi_Entry *target) +{ + Slapi_Attr *krbPrincipalKey = NULL; + Slapi_ValueSet *svs; + Slapi_Value *sv; + BerElement *be = NULL; + const struct berval *cbval; + ber_tag_t tag, tmp; + ber_int_t tkvno; + int hint; + int kvno; + int ret; + + /* retrieve current kvno and and keys */ + ret = slapi_entry_attr_find(target, "krbPrincipalKey", &krbPrincipalKey); + if (ret != 0) { + return 0; + } + + kvno = 0; + + slapi_attr_get_valueset(krbPrincipalKey, &svs); + hint = slapi_valueset_first_value(svs, &sv); + while (hint != -1) { + cbval = slapi_value_get_berval(sv); + if (!cbval) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", + "Error retrieving berval from Slapi_Value\n"); + goto next; + } + be = ber_init(cbval); + if (!be) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", + "ber_init() failed!\n"); + goto next; } - num_keys = n; - /* now verify how many keys we need to keep around */ - if (num_keys) { - if (time_now > data->lastPwChange + krbMaxTicketLife) { - /* the last password change was long ago, - * at most only the last entry need to be kept */ - num_versions = 2; - } else { - /* we don't know how many changes have happened since - * the oldest krbtgt was release, keep all + new */ - num_versions = num_keys + 1; - } + tag = ber_scanf(be, "{xxt[i]", &tmp, &tkvno); + if (tag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", + "Bad OLD key encoding ?!\n"); + ber_free(be, 1); + goto next; + } - /* now reorder by kvno */ - if (num_keys > 1) { - qsort(kbvals, num_keys, sizeof(struct kbvals), cmpkbvals); - } + if (tkvno > kvno) { + kvno = tkvno; } + + ber_free(be, 1); +next: + hint = slapi_valueset_next_value(svs, hint, &sv); } - /* increment kvno (will be 1 if this is a new entry) */ - kvno++; + return kvno; +} + +static inline void encode_int16(unsigned int val, unsigned char *p) +{ + p[1] = (val >> 8) & 0xff; + p[0] = (val ) & 0xff; +} + +static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data *data) +{ + struct ipapwd_config *config; + const char *krbPrincipalName; + uint32_t krbMaxTicketLife; + int kvno, i; + int krbTicketFlags; + struct berval *bval = NULL; + Slapi_Value **svals = NULL; + krb5_principal princ; + krb5_error_code krberr; + krb5_data pwd; + struct ipapwd_keyset *kset = NULL; + + slapi_lock_mutex(ipa_globals); + config = ipapwd_config; + slapi_unlock_mutex(ipa_globals); - svals = (Slapi_Value **)calloc(num_versions + 1, sizeof(Slapi_Value *)); + svals = (Slapi_Value **)calloc(2, sizeof(Slapi_Value *)); if (!svals) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "memory allocation failed\n"); return NULL; } - /* set all old keys to save */ - for (svals_no = 0; svals_no < (num_versions - 1); svals_no++) { - int idx; + kvno = ipapwd_get_cur_kvno(data->target); - idx = num_keys - (num_versions - 1) + svals_no; - svals[svals_no] = slapi_value_new_berval(kbvals[idx].bval); - if (!svals[svals_no]) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "Converting berval to Slapi_Value\n"); - goto enc_error; - } + krbPrincipalName = slapi_entry_attr_get_charptr(data->target, "krbPrincipalName"); + if (!krbPrincipalName) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "no krbPrincipalName present in this entry\n"); + return NULL; } - if (kbvals) free(kbvals); - krberr = krb5_parse_name(krbctx, krbPrincipalName, &princ); if (krberr) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", @@ -359,35 +494,40 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data goto enc_error; } + krbMaxTicketLife = slapi_entry_attr_get_uint(data->target, "krbMaxTicketLife"); + if (krbMaxTicketLife == 0) { + /* FIXME: retrieve the default from config (max_life from kdc.conf) */ + krbMaxTicketLife = 86400; /* just set the default 24h for now */ + } + krbTicketFlags = slapi_entry_attr_get_int(data->target, "krbTicketFlags"); pwd.data = (char *)data->password; pwd.length = strlen(data->password); - be = ber_alloc_t( LBER_USE_DER ); - - if (!be) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "memory allocation failed\n"); + kset = malloc(sizeof(struct ipapwd_keyset)); + if (!kset) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); goto enc_error; } - /* major-vno = 1 and minor-vno = 1 */ /* this encoding assumes all keys have the same kvno */ + /* major-vno = 1 and minor-vno = 1 */ + kset->major_vno = 1; + kset->minor_vno = 1; + /* increment kvno (will be 1 if this is a new entry) */ + kset->kvno = kvno + 1; /* we also assum mkvno is 0 */ - ret = ber_printf(be, "{t[i]t[i]t[i]t[i]t[{", - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), 1, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), 1, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 2), kvno, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 3), 0, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 4)); - if (ret == -1) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "encoding asn1 vno info failed\n"); + kset->mkvno = 0; + + kset->num_keys = config->num_pref_encsalts; + kset->keys = calloc(kset->num_keys, sizeof(struct ipapwd_krbkey)); + if (!kset->keys) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); goto enc_error; } - for (i = 0; i < ipa_n_keysalts; i++) { + for (i = 0; i < kset->num_keys; i++) { krb5_keyblock key; krb5_data salt; krb5_octet *ptr; @@ -398,7 +538,7 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data salt.data = NULL; - switch (ipa_keysalts[i].salt_type) { + switch (config->pref_encsalts[i].salt_type) { case KRB5_KDB_SALTTYPE_ONLYREALM: @@ -437,8 +577,9 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data * name without any separator) */ if (krbTicketFlags & KTF_REQUIRES_PRE_AUTH) { salt.length = KRB5P_SALT_SIZE; + salt.data = malloc(KRB5P_SALT_SIZE); krberr = krb5_c_random_make_octets(krbctx, &salt); - if (!krberr) { + if (krberr) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_c_random_make_octets failed [%s]\n", krb5_get_error_message(krbctx, krberr)); @@ -479,12 +620,12 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data default: slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "Invalid salt type [%d]\n", ipa_keysalts[i].salt_type); + "Invalid salt type [%d]\n", config->pref_encsalts[i].salt_type); goto enc_error; } /* need to build the key now to manage the AFS salt.length special case */ - krberr = krb5_c_string_to_key(krbctx, ipa_keysalts[i].enc_type, &pwd, &salt, &key); + krberr = krb5_c_string_to_key(krbctx, config->pref_encsalts[i].enc_type, &pwd, &salt, &key); if (krberr) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_c_string_to_key failed [%s]\n", @@ -496,7 +637,7 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data salt.length = strlen(salt.data); } - krberr = krb5_c_encrypt_length(krbctx, kmkey->enctype, key.length, &len); + krberr = krb5_c_encrypt_length(krbctx, config->kmkey->enctype, key.length, &len); if (krberr) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_c_string_to_key failed [%s]\n", @@ -522,7 +663,7 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data cipher.ciphertext.length = len; cipher.ciphertext.data = (char *)ptr+2; - krberr = krb5_c_encrypt(krbctx, kmkey, 0, 0, &plain, &cipher); + krberr = krb5_c_encrypt(krbctx, config->kmkey, 0, 0, &plain, &cipher); if (krberr) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_c_encrypt failed [%s]\n", @@ -534,79 +675,69 @@ static Slapi_Value **encrypt_encode_key(krb5_context krbctx, struct ipapwd_data } /* KrbSalt */ - if (salt.length) { - ret = ber_printf(be, "{t[{t[i]t[o]}]", - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), ipa_keysalts[i].salt_type, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), salt.data, salt.length); - } else { - ret = ber_printf(be, "{t[{t[i]}]", - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), ipa_keysalts[i].salt_type); - } - if (ret == -1) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "encoding asn1 KrbSalt failed\n"); + kset->keys[i].salt = malloc(sizeof(struct ipapwd_krbkeydata)); + if (!kset->keys[i].salt) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); krb5int_c_free_keyblock_contents(krbctx, &key); - krb5_free_data_contents(krbctx, &salt); free(ptr); goto enc_error; } + + kset->keys[i].salt->type = config->pref_encsalts[i].salt_type; + + if (salt.length) { + kset->keys[i].salt->value.bv_len = salt.length; + kset->keys[i].salt->value.bv_val = salt.data; + } /* EncryptionKey */ - ret = ber_printf(be, "t[{t[i]t[o]}]}", - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 0), key.enctype, - (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1), ptr, len+2); - if (ret == -1) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "encoding asn1 EncryptionKey failed\n"); + kset->keys[i].ekey = malloc(sizeof(struct ipapwd_krbkeydata)); + if (!kset->keys[i].ekey) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); krb5int_c_free_keyblock_contents(krbctx, &key); - krb5_free_data_contents(krbctx, &salt); free(ptr); goto enc_error; } - + kset->keys[i].ekey->type = key.enctype; + kset->keys[i].ekey->value.bv_len = len+2; + kset->keys[i].ekey->value.bv_val = malloc(len+2); + if (!kset->keys[i].ekey->value.bv_val) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + krb5int_c_free_keyblock_contents(krbctx, &key); + free(ptr); + goto enc_error; + } + memcpy(kset->keys[i].ekey->value.bv_val, ptr, len+2); + /* make sure we free the memory used now that we are done with it */ krb5int_c_free_keyblock_contents(krbctx, &key); - krb5_free_data_contents(krbctx, &salt); free(ptr); } - ret = ber_printf(be, "}]}"); - if (ret == -1) { - slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "encoding asn1 end of sequences failed\n"); - goto enc_error; - } - - ret = ber_flatten(be, &bval); - if (ret == -1) { + bval = encode_keys(kset); + if (!bval) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", - "flattening asn1 failed\n"); + "encoding asn1 KrbSalt failed\n"); goto enc_error; } - svals[svals_no] = slapi_value_new_berval(bval); - if (!svals[svals_no]) { + svals[0] = slapi_value_new_berval(bval); + if (!svals[0]) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "Converting berval to Slapi_Value\n"); goto enc_error; } - svals_no++; - svals[svals_no] = NULL; - + ipapwd_keyset_free(&kset); krb5_free_principal(krbctx, princ); ber_bvfree(bval); - ber_free(be, 1); return svals; enc_error: + if (kset) ipapwd_keyset_free(&kset); krb5_free_principal(krbctx, princ); if (bval) ber_bvfree(bval); if (svals) free(svals); - if (be) ber_free(be, 1); return NULL; } @@ -1038,7 +1169,7 @@ static Slapi_Value **ipapwd_setPasswordHistory(Slapi_Mods *smods, struct ipapwd_ static Slapi_Value *ipapwd_strip_pw_date(Slapi_Value *pw) { - char *pwstr; + const char *pwstr; pwstr = slapi_value_get_string(pw); if (strlen(pwstr) <= GENERALIZED_TIME_LENGTH) { @@ -1462,7 +1593,8 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) if (!svals) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "key encryption/encoding failed\n"); krb5_free_context(krbctx); - return LDAP_OPERATIONS_ERROR; + ret = LDAP_OPERATIONS_ERROR; + goto free_and_return; } /* done with it */ krb5_free_context(krbctx); @@ -1472,8 +1604,8 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) /* change Last Password Change field with the current date */ if (!gmtime_r(&(data->timeNow), &utctime)) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "failed to retrieve current date (buggy gmtime_r ?)\n"); - free(svals); - return LDAP_OPERATIONS_ERROR; + ret = LDAP_OPERATIONS_ERROR; + goto free_and_return; } strftime(timestr, GENERALIZED_TIME_LENGTH+1, "%Y%m%d%H%M%SZ", &utctime); slapi_mods_add_string(smods, LDAP_MOD_REPLACE, "krbLastPwdChange", timestr); @@ -1481,8 +1613,8 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) /* set Password Expiration date */ if (!gmtime_r(&(data->expireTime), &utctime)) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "failed to convert expiration date\n"); - free(svals); - return LDAP_OPERATIONS_ERROR; + ret = LDAP_OPERATIONS_ERROR; + goto free_and_return; } strftime(timestr, GENERALIZED_TIME_LENGTH+1, "%Y%m%d%H%M%SZ", &utctime); slapi_mods_add_string(smods, LDAP_MOD_REPLACE, "krbPasswordExpiration", timestr); @@ -1497,9 +1629,9 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) if (ntlm_flags) { char *password = strdup(data->password); if (encode_ntlm_keys(password, ntlm_flags, &ntlm) != 0) { - free(svals); free(password); - return LDAP_OPERATIONS_ERROR; + ret = LDAP_OPERATIONS_ERROR; + goto free_and_return; } if (ntlm_flags & KTF_LM_HASH) { hexbuf(lm, ntlm.lm); @@ -1518,8 +1650,8 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) userpwd = slapi_encode(data->password, NULL); if (!userpwd) { slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "failed to make userPassword hash\n"); - free(svals); - return LDAP_OPERATIONS_ERROR; + ret = LDAP_OPERATIONS_ERROR; + goto free_and_return; } slapi_mods_add_string(smods, LDAP_MOD_REPLACE, "userPassword", userpwd); @@ -1538,14 +1670,18 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) /* commit changes */ ret = ipapwd_apply_mods(data->dn, smods); - slapi_mods_free(&smods); - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", "<= ipapwd_SetPassword: %d\n", ret); - for (i = 0; svals[i]; i++) { - slapi_value_free(&svals[i]); +free_and_return: + slapi_mods_free(&smods); + + if (svals) { + for (i = 0; svals[i]; i++) { + slapi_value_free(&svals[i]); + } + free(svals); } - free(svals); + if (pwvals) { for (i = 0; pwvals[i]; i++) { slapi_value_free(&pwvals[i]); @@ -1555,60 +1691,15 @@ static int ipapwd_SetPassword(struct ipapwd_data *data) return ret; } -#if 0 /* Not used right now */ - -/* Generate a new, basic random password */ -static int ipapwd_generate_basic_passwd( int passlen, char **genpasswd ) +static int ipapwd_chpwop(Slapi_PBlock *pb) { - unsigned char *data = NULL; - char *enc = NULL; - int datalen = LDAP_EXTOP_PASSMOD_RANDOM_BYTES; - int enclen = LDAP_EXTOP_PASSMOD_GEN_PASSWD_LEN + 1; - - if ( genpasswd == NULL ) { - return LDAP_OPERATIONS_ERROR; - } - - if ( passlen > 0 ) { - datalen = passlen * 3 / 4 + 1; - enclen = datalen * 4; /* allocate the large enough space */ - } - - data = (unsigned char *)slapi_ch_calloc( datalen, 1 ); - enc = (char *)slapi_ch_calloc( enclen, 1 ); - - /* get random bytes from NSS */ - PK11_GenerateRandom( data, datalen ); - - /* b64 encode the random bytes to get a password made up - * of printable characters. ldif_base64_encode() will - * zero-terminate the string */ - (void)ldif_base64_encode( data, enc, passlen, -1 ); - - /* This will get freed by the caller */ - *genpasswd = slapi_ch_malloc( 1 + passlen ); - - /* trim the password to the proper length */ - PL_strncpyz( *genpasswd, enc, passlen + 1 ); - - slapi_ch_free( (void **)&data ); - slapi_ch_free_string( &enc ); - - return LDAP_SUCCESS; -} -#endif - -/* Password Modify Extended operation plugin function */ -static int ipapwd_extop(Slapi_PBlock *pb) -{ - char *oid = NULL; char *bindDN = NULL; char *authmethod = NULL; char *dn = NULL; char *oldPasswd = NULL; char *newPasswd = NULL; char *errMesg = NULL; - int ret=0, rc=0, sasl_ssf=0, is_ssl=0, is_root=0; + int ret=0, rc=0, is_root=0; ber_tag_t tag=0; ber_len_t len=-1; struct berval *extop_value = NULL; @@ -1616,69 +1707,11 @@ static int ipapwd_extop(Slapi_PBlock *pb) Slapi_Entry *targetEntry=NULL; char *attrlist[] = {"*", "passwordHistory", NULL }; struct ipapwd_data pwdata; + struct ipapwd_config *config; - slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", "=> ipapwd_extop\n"); - - /* Before going any further, we'll make sure that the right extended operation plugin - * has been called: i.e., the OID shipped whithin the extended operation request must - * match this very plugin's OID: EXOP_PASSWD_OID. */ - if ( slapi_pblock_get( pb, SLAPI_EXT_OP_REQ_OID, &oid ) != 0 ) { - errMesg = "Could not get OID value from request.\n"; - rc = LDAP_OPERATIONS_ERROR; - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", - errMesg ); - goto free_and_return; - } else { - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", - "Received extended operation request with OID %s\n", oid ); - } - - if ( strcasecmp( oid, EXOP_PASSWD_OID ) != 0) { - errMesg = "Request OID does not match Passwd OID.\n"; - rc = LDAP_OPERATIONS_ERROR; - goto free_and_return; - } else { - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", - "Password Modify extended operation request confirmed.\n" ); - } - /* Now , at least we know that the request was indeed a Password Modify one. */ - - /* make sure we have the master key */ - if (ipa_kmkey == NULL) { - ret = ipapwd_getMasterKey(ipa_realm_dn); - if (ret != LDAP_SUCCESS) { - errMesg = "Fatal Internal Error Retrieving Master Key"; - rc = LDAP_OPERATIONS_ERROR; - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", errMesg ); - goto free_and_return; - } - } - -#ifdef LDAP_EXTOP_PASSMOD_CONN_SECURE - /* Allow password modify only for SSL/TLS established connections and - * connections using SASL privacy layers */ - if ( slapi_pblock_get(pb, SLAPI_CONN_SASL_SSF, &sasl_ssf) != 0) { - errMesg = "Could not get SASL SSF from connection\n"; - rc = LDAP_OPERATIONS_ERROR; - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", - errMesg ); - goto free_and_return; - } - - if (slapi_pblock_get(pb, SLAPI_CONN_IS_SSL_SESSION, &is_ssl) != 0) { - errMesg = "Could not get IS SSL from connection\n"; - rc = LDAP_OPERATIONS_ERROR; - slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", - errMesg ); - goto free_and_return; - } - - if ( (is_ssl == 0) && (sasl_ssf <= 1) ) { - errMesg = "Operation requires a secure connection.\n"; - rc = LDAP_CONFIDENTIALITY_REQUIRED; - goto free_and_return; - } -#endif + slapi_lock_mutex(ipa_globals); + config = ipapwd_config; + slapi_unlock_mutex(ipa_globals); /* Get the ber value of the extended operation */ slapi_pblock_get(pb, SLAPI_EXT_OP_REQ_VALUE, &extop_value); @@ -1805,7 +1838,7 @@ parse_req_done: if (ret) { /* Couldn't find the entry, fail */ errMesg = "No such Entry exists.\n" ; - rc = LDAP_NO_SUCH_OBJECT ; + rc = LDAP_NO_SUCH_OBJECT; goto free_and_return; } @@ -1868,7 +1901,7 @@ parse_req_done: if (bindexp) { /* special case kpasswd and Directory Manager */ if ((strncasecmp(bindexp[0], "krbprincipalname=kadmin/changepw@", 33) == 0) && - (strcasecmp(&(bindexp[0][33]), ipa_realm) == 0)) { + (strcasecmp(&(bindexp[0][33]), config->realm) == 0)) { pwdata.changetype = IPA_CHANGETYPE_NORMAL; } if ((strcasecmp(bindexp[0], "cn=Directory Manager") == 0) && @@ -1928,83 +1961,660 @@ free_and_return: return SLAPI_PLUGIN_EXTENDED_SENT_RESULT; -} /* ipapwd_extop */ +} -/* Novell key-format scheme: - KrbMKey ::= SEQUENCE { - kvno [0] UInt32, - key [1] MasterKey - } - - MasterKey ::= SEQUENCE { - keytype [0] Int32, - keyvalue [1] OCTET STRING - } -*/ +/* Password Modify Extended operation plugin function */ +static int ipapwd_setkeytab(Slapi_PBlock *pb) +{ + struct ipapwd_config *config; + char *bindDN = NULL; + char *serviceName = NULL; + char *errMesg = NULL; + int ret=0, rc=0, is_root=0; + struct berval *extop_value = NULL; + BerElement *ber = NULL; + Slapi_PBlock *pbte = NULL; + Slapi_Entry *targetEntry=NULL; + struct berval *bval = NULL; + Slapi_Value **svals = NULL; + const char *bdn; + const Slapi_DN *bsdn; + Slapi_DN *sdn; + Slapi_Backend *be; + Slapi_Entry **es = NULL; + int scope, res; + char *filter; + char *attrlist[] = {"krbPrincipalKey", "krbLastPwdChange", NULL }; + krb5_context krbctx = NULL; + krb5_principal krbname = NULL; + krb5_error_code krberr; + int i, kvno; + Slapi_Mods *smods; + ber_tag_t rtag, ttmp; + ber_int_t tint; + ber_len_t tlen; + struct ipapwd_keyset *kset = NULL; + struct tm utctime; + char timestr[GENERALIZED_TIME_LENGTH+1]; + time_t time_now = time(NULL); + + slapi_lock_mutex(ipa_globals); + config = ipapwd_config; + slapi_unlock_mutex(ipa_globals); + + svals = (Slapi_Value **)calloc(2, sizeof(Slapi_Value *)); + if (!svals) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "memory allocation failed\n"); + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } + + krberr = krb5_init_context(&krbctx); + if (krberr) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_init_context failed\n"); + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } + + /* Get Bind DN */ + slapi_pblock_get(pb, SLAPI_CONN_DN, &bindDN); + + /* If the connection is bound anonymously, we must refuse to process this operation. */ + if (bindDN == NULL || *bindDN == '\0') { + /* Refuse the operation because they're bound anonymously */ + errMesg = "Anonymous Binds are not allowed.\n"; + rc = LDAP_INSUFFICIENT_ACCESS; + goto free_and_return; + } + + /* Get the ber value of the extended operation */ + slapi_pblock_get(pb, SLAPI_EXT_OP_REQ_VALUE, &extop_value); + + if ((ber = ber_init(extop_value)) == NULL) + { + errMesg = "KeytabGet Request decode failed.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + /* Format of request to parse + * + * KeytabGetRequest ::= SEQUENCE { + * serviceIdentity OCTET STRING + * keys SEQUENCE OF KrbKey, + * ... + * } + * + * KrbKey ::= SEQUENCE { + * key [0] EncryptionKey, + * salt [1] KrbSalt OPTIONAL, + * s2kparams [2] OCTET STRING OPTIONAL, + * ... + * } + * + * EncryptionKey ::= SEQUENCE { + * keytype [0] Int32, + * keyvalue [1] OCTET STRING + * } + * + * KrbSalt ::= SEQUENCE { + * type [0] Int32, + * salt [1] OCTET STRING OPTIONAL + * } + */ + + /* ber parse code */ + rtag = ber_scanf(ber, "{a{", &serviceName); + if (rtag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "ber_scanf failed\n"); + errMesg = "Invalid payload, failed to decode.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + krberr = krb5_parse_name(krbctx, serviceName, &krbname); + if (krberr) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb5_parse_name failed\n"); + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } -static int ipapwd_getMasterKey(const char *realm_dn) + /* check entry before doing any other decoding */ + + + /* Find ancestor base DN */ + sdn = slapi_sdn_new_dn_byval(ipa_realm_dn); + be = slapi_be_select(sdn); + slapi_sdn_free(&sdn); + bsdn = slapi_be_getsuffix(be, 0); + bdn = slapi_sdn_get_dn(bsdn); + scope = LDAP_SCOPE_SUBTREE; + + /* get Entry by krbPrincipalName */ + filter = slapi_ch_smprintf("(krbPrincipalName=%s)", serviceName); + + pbte = slapi_pblock_new(); + slapi_search_internal_set_pb(pbte, + bdn, scope, filter, attrlist, 0, + NULL, /* Controls */ + NULL, /* UniqueID */ + ipapwd_plugin_id, + 0); /* Flags */ + + /* do search the tree */ + ret = slapi_search_internal_pb(pbte); + slapi_pblock_get(pbte, SLAPI_PLUGIN_INTOP_RESULT, &res); + if (ret == -1 || res != LDAP_SUCCESS) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", + "Search for Principal failed, err (%d)\n", + res?res:ret); + errMesg = "PrincipalName not found.\n"; + rc = LDAP_NO_SUCH_OBJECT; + goto free_and_return; + } + + /* get entries */ + slapi_pblock_get(pbte, SLAPI_PLUGIN_INTOP_SEARCH_ENTRIES, &es); + if (!es) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", "No entries ?!"); + errMesg = "PrincipalName not found.\n"; + rc = LDAP_NO_SUCH_OBJECT; + goto free_and_return; + } + + /* count entries */ + for (i = 0; es[i]; i++) /* count */ ; + + /* if there is none or more than one, freak out */ + if (i != 1) { + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", + "Too many entries, or entry no found (%d)", i); + errMesg = "PrincipalName not found.\n"; + rc = LDAP_NO_SUCH_OBJECT; + goto free_and_return; + } + targetEntry = es[0]; + + /* First thing to do is to ask access control if the bound identity has + rights to modify the userpassword attribute on this entry. If not, then + we fail immediately with insufficient access. This means that we don't + leak any useful information to the client such as current password + wrong, etc. + */ + + is_root = slapi_dn_isroot(bindDN); + slapi_pblock_set(pb, SLAPI_REQUESTOR_ISROOT, &is_root); + + /* In order to perform the access control check , we need to select a backend (even though + * we don't actually need it otherwise). + */ + slapi_pblock_set(pb, SLAPI_BACKEND, be); + + /* Access Strategy: + * If the user has WRITE-ONLY access, a new keytab is set on the entry. + */ + + ret = slapi_access_allowed(pb, targetEntry, "krbPrincipalKey", NULL, SLAPI_ACL_WRITE); + if (ret != LDAP_SUCCESS) { + errMesg = "Insufficient access rights\n"; + rc = LDAP_INSUFFICIENT_ACCESS; + goto free_and_return; + } + + /* increment kvno (will be 1 if this is a new entry) */ + kvno = ipapwd_get_cur_kvno(targetEntry) + 1; + + /* ok access allowed, init kset and continue to parse ber buffer */ + + errMesg = "Unable to set key\n"; + rc = LDAP_OPERATIONS_ERROR; + + kset = malloc(sizeof(struct ipapwd_keyset)); + if (!kset) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + + /* this encoding assumes all keys have the same kvno */ + /* major-vno = 1 and minor-vno = 1 */ + kset->major_vno = 1; + kset->minor_vno = 1; + kset->kvno = kvno; + /* we also assum mkvno is 0 */ + kset->mkvno = 0; + + kset->keys = NULL; + kset->num_keys = 0; + + rtag = ber_peek_tag(ber, &tlen); + while (rtag == LBER_SEQUENCE) { + krb5_data plain; + krb5_enc_data cipher; + struct berval tval; + krb5_octet *kdata; + size_t klen; + + i = kset->num_keys; + + if (kset->keys) { + struct ipapwd_krbkey *newset; + + newset = realloc(kset->keys, sizeof(struct ipapwd_krbkey) * (i + 1)); + if (!newset) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + kset->keys = newset; + } else { + kset->keys = malloc(sizeof(struct ipapwd_krbkey)); + if (!kset->keys) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + } + kset->num_keys += 1; + + kset->keys[i].salt = NULL; + kset->keys[i].ekey = NULL; + kset->keys[i].s2kparams.bv_len = 0; + kset->keys[i].s2kparams.bv_val = NULL; + + /* EncryptionKey */ + rtag = ber_scanf(ber, "{t[{t[i]t[o]}]", &ttmp, &ttmp, &tint, &ttmp, &tval); + if (rtag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "ber_scanf failed\n"); + errMesg = "Invalid payload, failed to decode.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + kset->keys[i].ekey = calloc(1, sizeof(struct ipapwd_krbkeydata)); + if (!kset->keys[i].ekey) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + + kset->keys[i].ekey->type = tint; + + plain.length = tval.bv_len; + plain.data = tval.bv_val; + + krberr = krb5_c_encrypt_length(krbctx, config->kmkey->enctype, plain.length, &klen); + if (krberr) { + free(tval.bv_val); + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb encryption failed!\n"); + goto free_and_return; + } + + kdata = malloc(2 + klen); + if (!kdata) { + free(tval.bv_val); + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + encode_int16(plain.length, kdata); + + kset->keys[i].ekey->value.bv_len = 2 + klen; + kset->keys[i].ekey->value.bv_val = (char *)kdata; + + cipher.ciphertext.length = klen; + cipher.ciphertext.data = (char *)kdata + 2; + + krberr = krb5_c_encrypt(krbctx, config->kmkey, 0, 0, &plain, &cipher); + if (krberr) { + free(tval.bv_val); + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "krb encryption failed!\n"); + goto free_and_return; + } + + free(tval.bv_val); + + rtag = ber_peek_tag(ber, &tlen); + + /* KrbSalt */ + if (rtag == (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1)) { + + rtag = ber_scanf(ber, "t[{t[i]", &ttmp, &ttmp, &tint); + if (rtag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "ber_scanf failed\n"); + errMesg = "Invalid payload, failed to decode.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + kset->keys[i].salt = calloc(1, sizeof(struct ipapwd_krbkeydata)); + if (!kset->keys[i].salt) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "malloc failed!\n"); + goto free_and_return; + } + + kset->keys[i].salt->type = tint; + + rtag = ber_peek_tag(ber, &tlen); + if (rtag == (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 1)) { + + rtag = ber_scanf(ber, "t[o]}]", &ttmp, &tval); + if (rtag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "ber_scanf failed\n"); + errMesg = "Invalid payload, failed to decode.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + kset->keys[i].salt->value = tval; + + rtag = ber_peek_tag(ber, &tlen); + } + } + + /* FIXME: s2kparams - NOT implemented yet */ + if (rtag == (ber_tag_t)(LBER_CONSTRUCTED | LBER_CLASS_CONTEXT | 2)) { + rtag = ber_scanf(ber, "t[x]}", &ttmp); + } else { + rtag = ber_scanf(ber, "}", &ttmp); + } + if (rtag == LBER_ERROR) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "ber_scanf failed\n"); + errMesg = "Invalid payload, failed to decode.\n"; + rc = LDAP_PROTOCOL_ERROR; + goto free_and_return; + } + + rtag = ber_peek_tag(ber, &tlen); + } + + ber_free(ber, 1); + ber = NULL; + + /* filter un-supported encodings */ + ret = filter_keys(kset); + if (ret) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "keyset filtering failed\n"); + goto free_and_return; + } + + /* check if we have any left */ + if (kset->num_keys == 0) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "keyset filtering rejected all proposed keys\n"); + errMesg = "All enctypes provided are unsupported"; + rc = LDAP_UNWILLING_TO_PERFORM; + goto free_and_return; + } + + smods = slapi_mods_new(); + + /* change Last Password Change field with the current date */ + if (!gmtime_r(&(time_now), &utctime)) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "failed to retrieve current date (buggy gmtime_r ?)\n"); + slapi_mods_free(&smods); + goto free_and_return; + } + strftime(timestr, GENERALIZED_TIME_LENGTH+1, "%Y%m%d%H%M%SZ", &utctime); + slapi_mods_add_string(smods, LDAP_MOD_REPLACE, "krbLastPwdChange", timestr); + + /* FIXME: set Password Expiration date ? */ +#if 0 + if (!gmtime_r(&(data->expireTime), &utctime)) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", "failed to convert expiration date\n"); + slapi_ch_free_string(&randPasswd); + slapi_mods_free(&smods); + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } + strftime(timestr, GENERALIZED_TIME_LENGTH+1, "%Y%m%d%H%M%SZ", &utctime); + slapi_mods_add_string(smods, LDAP_MOD_REPLACE, "krbPasswordExpiration", timestr); +#endif + + bval = encode_keys(kset); + if (!bval) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "encoding asn1 KrbSalt failed\n"); + slapi_mods_free(&smods); + goto free_and_return; + } + + svals[0] = slapi_value_new_berval(bval); + if (!svals[0]) { + slapi_log_error(SLAPI_LOG_FATAL, "ipa_pwd_extop", + "Converting berval to Slapi_Value\n"); + slapi_mods_free(&smods); + goto free_and_return; + } + + slapi_mods_add_mod_values(smods, LDAP_MOD_REPLACE, "krbPrincipalKey", svals); + + /* commit changes */ + ret = ipapwd_apply_mods(slapi_entry_get_dn_const(targetEntry), smods); + + if (ret != LDAP_SUCCESS) { + slapi_mods_free(&smods); + goto free_and_return; + + } + slapi_mods_free(&smods); + + /* Format of response + * + * KeytabGetRequest ::= SEQUENCE { + * new_kvno Int32 + * SEQUENCE OF KeyTypes + * } + * + * * List of accepted enctypes * + * KeyTypes ::= SEQUENCE { + * enctype Int32 + * } + */ + + errMesg = "Internal Error\n"; + rc = LDAP_OPERATIONS_ERROR; + + ber = ber_alloc(); + if (!ber) { + goto free_and_return; + } + + ret = ber_printf(ber, "{i{", (ber_int_t)kvno); + if (ret == -1) { + goto free_and_return; + } + + for (i = 0; i < kset->num_keys; i++) { + ret = ber_printf(ber, "{i}", (ber_int_t)kset->keys[i].ekey->type); + if (ret == -1) { + goto free_and_return; + } + } + ret = ber_printf(ber, "}}"); + if (ret == -1) { + goto free_and_return; + } + + if (ret != -1) { + struct berval *bvp; + LDAPControl new_ctrl = {0}; + + ret = ber_flatten(ber, &bvp); + if (ret == -1) { + goto free_and_return; + } + + new_ctrl.ldctl_oid = KEYTAB_RET_OID; + new_ctrl.ldctl_value = *bvp; + new_ctrl.ldctl_iscritical = 0; + rc= slapi_pblock_set(pb, SLAPI_ADD_RESCONTROL, &new_ctrl); + ber_bvfree(bvp); + } + + /* Free anything that we allocated above */ +free_and_return: + slapi_ch_free_string(&serviceName); + if (kset) ipapwd_keyset_free(&kset); + + if (bval) ber_bvfree(bval); + if (ber) ber_free(ber, 1); + + if (pbte) { + slapi_free_search_results_internal(pbte); + slapi_pblock_destroy(pbte); + } + if (svals) { + for (i = 0; svals[i]; i++) { + slapi_value_free(&svals[i]); + } + free(svals); + } + + if (krbname) krb5_free_principal(krbctx, krbname); + if (krbctx) krb5_free_context(krbctx); + + slapi_log_error(SLAPI_LOG_PLUGIN, "ipa_pwd_extop", errMesg ? errMesg : "success"); + slapi_send_ldap_result(pb, rc, NULL, errMesg, 0, NULL); + + return SLAPI_PLUGIN_EXTENDED_SENT_RESULT; +} + +static int new_ipapwd_encsalt(krb5_context krbctx, const char * const *encsalts, + struct ipapwd_encsalt **es_types, int *num_es_types) { - krb5_keyblock *kmkey; + struct ipapwd_encsalt *es; + int nes, i; + + for (i = 0; encsalts[i]; i++) /* count */ ; + es = calloc(i + 1, sizeof(struct ipapwd_encsalt)); + if (!es) { + slapi_log_error(SLAPI_LOG_FATAL, "ipapwd_start", "Out of memory!\n"); + return LDAP_OPERATIONS_ERROR; + } + + for (i = 0, nes = 0; encsalts[i]; i++) { + char *enc, *salt; + krb5_int32 tmpsalt; + krb5_enctype tmpenc; + krb5_boolean similar; + krb5_error_code krberr; + int j; + + enc = strdup(encsalts[i]); + if (!enc) { + slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Allocation error\n"); + return LDAP_OPERATIONS_ERROR; + } + salt = strchr(enc, ':'); + if (!salt) { + slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Invalid krb5 enc string\n"); + free(enc); + continue; + } + *salt = '\0'; /* null terminate the enc type */ + salt++; /* skip : */ + + krberr = krb5_string_to_enctype(enc, &tmpenc); + if (krberr) { + slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Invalid krb5 enctype\n"); + free(enc); + continue; + } + + krberr = krb5_string_to_salttype(salt, &tmpsalt); + for (j = 0; j < nes; j++) { + krb5_c_enctype_compare(krbctx, es[j].enc_type, tmpenc, &similar); + if (similar && (es[j].salt_type == tmpsalt)) { + break; + } + } + + if (j == nes) { + /* not found */ + es[j].enc_type = tmpenc; + es[j].salt_type = tmpsalt; + nes++; + } + + free(enc); + } + + *es_types = es; + *num_es_types = nes; + + return LDAP_SUCCESS; +} + +static int ipapwd_getConfig(krb5_context krbctx, const char *realm_dn) +{ + struct ipapwd_config *config = NULL; + krb5_keyblock *kmkey = NULL; + Slapi_Entry *realm_entry = NULL; Slapi_Attr *a; Slapi_Value *v; - Slapi_Entry *realm_entry; - BerElement *be; + BerElement *be = NULL; ber_tag_t tag, tmp; ber_int_t ttype; const struct berval *bval; - struct berval *mkey; + struct berval *mkey = NULL; + char **encsalts; + int ret; + config = malloc(sizeof(struct ipapwd_config)); + if (!config) { + slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Out of memory!\n"); + goto free_and_error; + } kmkey = malloc(sizeof(krb5_keyblock)); if (!kmkey) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Out of memory!\n"); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; + } + config->kmkey = kmkey; + + ret = krb5_get_default_realm(krbctx, &config->realm); + if (ret) { + slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Failed to get default realm?!\n"); + goto free_and_error; } - if (ipapwd_getEntry(realm_dn, &realm_entry, NULL) != LDAP_SUCCESS) { + + /* get the Realm Container entry */ + ret = ipapwd_getEntry(realm_dn, &realm_entry, NULL); + if (ret != LDAP_SUCCESS) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "No realm Entry?\n"); - free(kmkey); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } - if (slapi_entry_attr_find(realm_entry, "krbMKey", &a) == -1) { + /*** get the Kerberos Master Key ***/ + + ret = slapi_entry_attr_find(realm_entry, "krbMKey", &a); + if (ret == -1) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "No master key??\n"); - free(kmkey); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } /* there should be only one value here */ - if (slapi_attr_first_value(a, &v) == -1) { + ret = slapi_attr_first_value(a, &v); + if (ret == -1) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "No master key values??\n"); - free(kmkey); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } bval = slapi_value_get_berval(v); if (!bval) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Error retrieving master key berval\n"); - free(kmkey); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } be = ber_init(bval); if (!bval) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "ber_init() failed!\n"); - free(kmkey); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } tag = ber_scanf(be, "{i{iO}}", &tmp, &ttype, &mkey); if (tag == LBER_ERROR) { slapi_log_error(SLAPI_LOG_TRACE, "ipapwd_start", "Bad Master key encoding ?!\n"); - free(kmkey); - ber_free(be, 1); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } kmkey->magic = KV5M_KEYBLOCK; @@ -2013,70 +2623,172 @@ static int ipapwd_getMasterKey(const char *realm_dn) kmkey->contents = malloc(mkey->bv_len); if (!kmkey->contents) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Out of memory!\n"); - ber_bvfree(mkey); - ber_free(be, 1); - free(kmkey); - slapi_entry_free(realm_entry); - return LDAP_OPERATIONS_ERROR; + goto free_and_error; } memcpy(kmkey->contents, mkey->bv_val, mkey->bv_len); + ber_bvfree(mkey); + ber_free(be, 1); + /*** get the Supported Enc/Salt types ***/ + + encsalts = slapi_entry_attr_get_charray(realm_entry, "krbSupportedEncSaltTypes"); + if (encsalts) { + ret = new_ipapwd_encsalt(krbctx, (const char * const *)encsalts, + &config->supp_encsalts, + &config->num_supp_encsalts); + slapi_ch_array_free(encsalts); + } else { + slapi_log_error(SLAPI_LOG_TRACE, "ipapwd_start", "No configured salt types use defaults\n"); + ret = new_ipapwd_encsalt(krbctx, ipapwd_def_encsalts, + &config->supp_encsalts, + &config->num_supp_encsalts); + } + if (ret) { + slapi_log_error(SLAPI_LOG_FATAL, "ipapwd_start", + "Can't get Supported EncSalt Types\n"); + goto free_and_error; + } + + /*** get the Preferred Enc/Salt types ***/ + + encsalts = slapi_entry_attr_get_charray(realm_entry, "krbDefaultEncSaltTypes"); + if (encsalts) { + ret = new_ipapwd_encsalt(krbctx, (const char * const *)encsalts, + &config->pref_encsalts, + &config->num_pref_encsalts); + slapi_ch_array_free(encsalts); + } else { + slapi_log_error(SLAPI_LOG_TRACE, "ipapwd_start", "No configured salt types use defaults\n"); + ret = new_ipapwd_encsalt(krbctx, ipapwd_def_encsalts, + &config->pref_encsalts, + &config->num_pref_encsalts); + } + if (ret) { + slapi_log_error(SLAPI_LOG_FATAL, "ipapwd_start", + "Can't get Preferred EncSalt Types\n"); + goto free_and_error; + } + + /*** set config/replace old config ***/ + + /* FIXME: free old one in a safe way, use read locks ? */ slapi_lock_mutex(ipa_globals); - ipa_kmkey = kmkey; + ipapwd_config = config; slapi_unlock_mutex(ipa_globals); slapi_entry_free(realm_entry); - ber_bvfree(mkey); - ber_free(be, 1); return LDAP_SUCCESS; + +free_and_error: + if (mkey) ber_bvfree(mkey); + if (be) ber_free(be, 1); + if (config->pref_encsalts) free(config->pref_encsalts); + if (config->supp_encsalts) free(config->supp_encsalts); + if (config->kmkey) free(config->kmkey); + if (config) free(config); + if (realm_entry) slapi_entry_free(realm_entry); + return LDAP_OPERATIONS_ERROR; } -static char *ipapwd_oid_list[] = { - EXOP_PASSWD_OID, - NULL -}; +static int ipapwd_extop(Slapi_PBlock *pb) +{ + char *oid = NULL; + char *errMesg = NULL; + int ret=0, rc=0, sasl_ssf=0, is_ssl=0; + slapi_log_error(SLAPI_LOG_TRACE, "ipa_pwd_extop", "=> ipapwd_extop\n"); -static char *ipapwd_name_list[] = { - "ipapwd_extop", - NULL -}; +#ifdef LDAP_EXTOP_PASSMOD_CONN_SECURE + /* Allow password modify only for SSL/TLS established connections and + * connections using SASL privacy layers */ + if (slapi_pblock_get(pb, SLAPI_CONN_SASL_SSF, &sasl_ssf) != 0) { + errMesg = "Could not get SASL SSF from connection\n"; + rc = LDAP_OPERATIONS_ERROR; + slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", + errMesg ); + goto free_and_return; + } -/* will read this from the krbSupportedEncSaltTypes in the krbRealmContainer later on */ -const char *krb_sup_encs[] = { - "des3-hmac-sha1:normal", - "arcfour-hmac:normal", - "des-hmac-sha1:normal", - "des-cbc-md5:normal", - "des-cbc-crc:normal", - "des-cbc-crc:v4", - "des-cbc-crc:afs3", - NULL -}; + if (slapi_pblock_get(pb, SLAPI_CONN_IS_SSL_SESSION, &is_ssl) != 0) { + errMesg = "Could not get IS SSL from connection\n"; + rc = LDAP_OPERATIONS_ERROR; + slapi_log_error( SLAPI_LOG_PLUGIN, "ipa_pwd_extop", + errMesg ); + goto free_and_return; + } + + if ((is_ssl == 0) && (sasl_ssf <= 1)) { + errMesg = "Operation requires a secure connection.\n"; + rc = LDAP_CONFIDENTIALITY_REQUIRED; + goto free_and_return; + } +#endif + + /* make sure we have the master key */ + if (ipapwd_config == NULL) { + krb5_context krbctx; + krb5_error_code krberr; + + krberr = krb5_init_context(&krbctx); + if (krberr) { + slapi_log_error(SLAPI_LOG_FATAL, "ipapwd_start", "krb5_init_context failed\n"); + errMesg = "Fatal Internal Error"; + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } + ret = ipapwd_getConfig(krbctx, ipa_realm_dn); + if (ret != LDAP_SUCCESS) { + slapi_log_error(SLAPI_LOG_PLUGIN, "ipa_pwd_extop", "Error Retrieving Master Key"); + errMesg = "Fatal Internal Error"; + rc = LDAP_OPERATIONS_ERROR; + goto free_and_return; + } + krb5_free_context(krbctx); + } + + /* Before going any further, we'll make sure that the right extended operation plugin + * has been called: i.e., the OID shipped whithin the extended operation request must + * match this very plugin's OIDs: EXOP_PASSWD_OID or KEYTAB_SET_OID. */ + if (slapi_pblock_get(pb, SLAPI_EXT_OP_REQ_OID, &oid) != 0) { + errMesg = "Could not get OID value from request.\n"; + rc = LDAP_OPERATIONS_ERROR; + slapi_log_error(SLAPI_LOG_PLUGIN, "ipa_pwd_extop", errMesg); + goto free_and_return; + } else { + slapi_log_error(SLAPI_LOG_PLUGIN, "ipa_pwd_extop", + "Received extended operation request with OID %s\n", oid); + } + + if (strcasecmp(oid, EXOP_PASSWD_OID) == 0) { + return ipapwd_chpwop(pb); + } + if (strcasecmp(oid, KEYTAB_SET_OID) == 0) { + return ipapwd_setkeytab(pb); + } + + errMesg = "Request OID does not match supported OIDs.\n"; + rc = LDAP_OPERATIONS_ERROR; + +free_and_return: + slapi_log_error(SLAPI_LOG_PLUGIN, "ipa_pwd_extop", errMesg); + slapi_send_ldap_result(pb, rc, NULL, errMesg, 0, NULL); + + return SLAPI_PLUGIN_EXTENDED_SENT_RESULT; +} -#define KRBCHECK(ctx, err, fname) do { \ - if (err) { \ - slapi_log_error(SLAPI_LOG_PLUGIN, "ipapwd_start", \ - "%s failed [%s]\n", fname, \ - krb5_get_error_message(ctx, err)); \ - return LDAP_OPERATIONS_ERROR; \ - } } while(0) /* Init data structs */ -/* TODO: read input from tree */ static int ipapwd_start( Slapi_PBlock *pb ) { - int krberr, i; krb5_context krbctx; + krb5_error_code krberr; char *realm; char *realm_dn; char *config_dn; char *partition_dn; Slapi_Entry *config_entry; int ret; - struct krb5p_keysalt *keysalts; - int n_keysalts; ipa_globals = slapi_new_mutex(); @@ -2085,80 +2797,17 @@ static int ipapwd_start( Slapi_PBlock *pb ) slapi_log_error(SLAPI_LOG_FATAL, "ipapwd_start", "krb5_init_context failed\n"); return LDAP_OPERATIONS_ERROR; } - if (krb5_get_default_realm(krbctx, &realm)) { - krb5_free_context(krbctx); - return LDAP_OPERATIONS_ERROR; - } - for (i = 0; krb_sup_encs[i]; i++) /* count */ ; - keysalts = (struct krb5p_keysalt *)malloc(sizeof(struct krb5p_keysalt) * (i + 1)); - if (!keysalts) { - krb5_free_context(krbctx); - free(realm); - return LDAP_OPERATIONS_ERROR; - } - - for (i = 0, n_keysalts = 0; krb_sup_encs[i]; i++) { - char *enc, *salt; - krb5_int32 tmpenc; - krb5_int32 tmpsalt; - krb5_boolean similar; - int j; - - enc = strdup(krb_sup_encs[i]); - if (!enc) { - slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Allocation error\n"); - krb5_free_context(krbctx); - free(realm); - return LDAP_OPERATIONS_ERROR; - } - salt = strchr(enc, ':'); - if (!salt) { - slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Invalid krb5 enc string\n"); - free(enc); - continue; - } - *salt = '\0'; /* null terminate the enc type */ - salt++; /* skip : */ - - krberr = krb5_string_to_enctype(enc, &tmpenc); - if (krberr) { - slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Invalid krb5 enctype\n"); - free(enc); - continue; - } - - krberr = krb5_string_to_salttype(salt, &tmpsalt); - for (j = 0; j < n_keysalts; j++) { - krb5_c_enctype_compare(krbctx, keysalts[j].enc_type, tmpenc, &similar); - if (similar && (keysalts[j].salt_type == tmpsalt)) { - break; - } - } - - if (j == n_keysalts) { - /* not found */ - keysalts[j].enc_type = tmpenc; - keysalts[j].salt_type = tmpsalt; - n_keysalts++; - } - - free(enc); - } - - krb5_free_context(krbctx); /*retrieve the master key from the stash file */ if (slapi_pblock_get(pb, SLAPI_TARGET_DN, &config_dn) != 0) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "No config DN?\n"); - free(keysalts); - free(realm); + krb5_free_context(krbctx); return LDAP_OPERATIONS_ERROR; } if (ipapwd_getEntry(config_dn, &config_entry, NULL) != LDAP_SUCCESS) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "No config Entry?\n"); - free(keysalts); - free(realm); + krb5_free_context(krbctx); return LDAP_OPERATIONS_ERROR; } @@ -2167,34 +2816,53 @@ static int ipapwd_start( Slapi_PBlock *pb ) slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Missing partition configuration entry (nsslapd-targetSubtree)!\n"); krb5_free_context(krbctx); slapi_entry_free(config_entry); - free(keysalts); - free(realm); return LDAP_OPERATIONS_ERROR; } + ret = krb5_get_default_realm(krbctx, &realm); + if (ret) { + slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Failed to get default realm?!\n"); + krb5_free_context(krbctx); + return LDAP_OPERATIONS_ERROR; + } realm_dn = slapi_ch_smprintf("cn=%s,cn=kerberos,%s", realm, partition_dn); if (!realm_dn) { slapi_log_error( SLAPI_LOG_FATAL, "ipapwd_start", "Out of memory ?\n"); - free(keysalts); free(realm); + krb5_free_context(krbctx); + slapi_entry_free(config_entry); return LDAP_OPERATIONS_ERROR; } + free(realm); - ipa_realm = realm; + slapi_lock_mutex(ipa_globals); ipa_realm_dn = realm_dn; - ipa_keysalts = keysalts; - ipa_n_keysalts = n_keysalts; + slapi_unlock_mutex(ipa_globals); - ret = ipapwd_getMasterKey(ipa_realm_dn); + ret = ipapwd_getConfig(krbctx, ipa_realm_dn); if (ret) { slapi_log_error( SLAPI_LOG_PLUGIN, "ipapwd_start", "Couldn't init master key at start delaying ..."); ret = LDAP_SUCCESS; } + krb5_free_context(krbctx); slapi_entry_free(config_entry); return ret; } +static char *ipapwd_oid_list[] = { + EXOP_PASSWD_OID, + KEYTAB_SET_OID, + NULL +}; + + +static char *ipapwd_name_list[] = { + "Password Change Extended Operation", + "Keytab Retrieval Extended Operation", + NULL +}; + /* Initialization function */ int ipapwd_init( Slapi_PBlock *pb ) { diff --git a/ipa-server/ipaserver/krbinstance.py b/ipa-server/ipaserver/krbinstance.py index 438bfb7d5..358e47cc2 100644 --- a/ipa-server/ipaserver/krbinstance.py +++ b/ipa-server/ipaserver/krbinstance.py @@ -128,6 +128,7 @@ class KrbInstance(service.Service): self.step("adding kerberos entries to the DS", self.__add_krb_entries) self.step("adding defalt ACIs", self.__add_default_acis) self.step("configuring KDC", self.__create_instance) + self.step("adding defalt keytypes", self.__add_default_keytypes) self.step("creating a keytab for the directory", self.__create_ds_keytab) self.step("creating a keytab for the machine", self.__create_host_keytab) self.step("exporting the kadmin keytab", self.__export_kadmin_changepw_keytab) @@ -253,9 +254,11 @@ class KrbInstance(service.Service): self.__ldap_mod("kerberos.ldif") def __add_default_acis(self): - #Change the default ACL to avoid anonimous access to kerberos keys and othe hashes self.__ldap_mod("default-aci.ldif") + def __add_default_keytypes(self): + self.__ldap_mod("default-keytypes.ldif") + def __create_replica_instance(self): self.__create_instance(replica=True) |