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https://github.com/cryb-to/cryb-otp.git
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be6f32b5bd
It is not yet capable of handling OTP requests, but all the elements are there: it can receive and decode Access-Request messages and respond with either Access-Accept or Access-Reject. All that remains is to refactor the guts of otpkey into libotp and plug them into otpradiusd.
148 lines
4.3 KiB
C
148 lines
4.3 KiB
C
/*-
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* Copyright (c) 2018 The University of Oslo
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef OTPRADIUSD_H_INCLUDED
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#define OTPRADIUSD_H_INCLUDED
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typedef struct rad_attribute rad_attribute;
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typedef struct rad_message rad_message;
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typedef struct rad_transaction rad_transaction;
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struct addrinfo;
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typedef enum rad_msg_code {
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rmc_unknown = 0,
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rmc_access_request = 1,
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rmc_access_accept = 2,
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rmc_access_reject = 3,
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rmc_accounting_request = 4,
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rmc_accounting_response = 5,
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rmc_access_challenge = 11,
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rmc_status_server = 12,
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rmc_status_client = 13,
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rmc_max
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} rad_msg_code;
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typedef enum rad_attr_code {
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rac_unknown_attr = 0,
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rac_user_name = 1,
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rac_user_password = 2,
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rac_chap_password = 3,
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rac_nas_ip_address = 4,
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rac_nas_port = 5,
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rac_service_type = 6,
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rac_framed_protocol = 7,
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rac_framed_ip_address = 8,
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rac_framed_ip_netmask = 9,
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rac_framed_routing = 10,
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rac_filter_id = 11,
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rac_framed_mtu = 12,
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rac_framed_compression = 13,
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rac_login_ip_host = 14,
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rac_login_service = 15,
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rac_login_tcp_port = 16,
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/* unassigned = 17, */
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rac_reply_message = 18,
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rac_callback_number = 19,
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rac_callback_id = 20,
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/* unassigned = 21, */
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rac_framed_route = 22,
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rac_framed_ipx_network = 23,
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rac_state = 24,
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rac_class = 25,
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rac_vendor_specific = 26,
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rac_session_timeout = 27,
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rac_idle_timeout = 28,
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rac_termination_action = 29,
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rac_called_station_id = 30,
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rac_calling_station_id = 31,
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rac_nas_identifier = 32,
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rac_proxy_state = 33,
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rac_login_lat_service = 34,
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rac_login_lat_node = 35,
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rac_login_lat_group = 36,
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rac_framed_appletalk_link = 37,
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rac_framed_appletalk_network = 38,
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rac_framed_appletalk_zone = 39,
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/* reserved for accounting = 40...59, */
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rac_chap_challenge = 60,
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rac_nas_port_type = 61,
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rac_port_limit = 62,
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rac_login_lat_port = 63,
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rac_max
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} rad_attr_code;
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#define MIN_RADPASS_LEN 16
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#define MAX_RADPASS_LEN 128
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#define MIN_RADATTR_LEN 3
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#define MAX_RADATTR_LEN 255
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struct rad_attribute {
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uint8_t code;
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uint8_t length;
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uint8_t value[MAX_RADATTR_LEN - 2];
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};
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#define MIN_RADPKT_LEN 20
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#define MAX_RADPKT_LEN 4096
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struct rad_message {
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uint8_t code;
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uint8_t identifier;
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uint16_t length;
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uint8_t authenticator[16];
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uint8_t attributes[MAX_RADPKT_LEN - 20];
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};
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struct rad_transaction {
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struct sockaddr_storage caddr;
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socklen_t caddrlen;
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rad_message request;
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size_t reqlen;
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rad_message response;
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size_t rsplen;
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};
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int add_listener(const char *, int);
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int resolve(const char *, const char *, struct addrinfo **);
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int dispatch(void);
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int rad_handle(rad_transaction *);
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extern const char *rad_secret;
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extern size_t rad_secret_len;
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void print_hex(const void *, size_t, size_t);
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void auth_encode(const uint8_t *, const uint8_t *, uint8_t *, size_t);
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void auth_decode(const uint8_t *, const uint8_t *, uint8_t *, size_t);
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#endif
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