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/* |
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* Copyright (c) 2023 Valtteri Koskivuori <vkoskiv@gmail.com> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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|
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#ifndef _MACNTP_H |
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#define _MACNTP_H |
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|
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enum MacNTPError { |
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Success = 0, |
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MacTCPInitFailed, |
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InvalidURL, |
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BadNtpStructSize, |
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UDPCreateFailed, |
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UDPSendFailed, |
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UDPRcvFailed, |
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InvalidNTPResponse, |
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OriginTimestampMismatch, |
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DNSResolveFailed, |
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// Below only for SetSystemTime |
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ClockWriteFailed, |
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ClockReadFailed, |
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UDPRcvTimedOut, |
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PacketParamNull |
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}; |
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|
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struct ntp_ts { |
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unsigned long upper; /* Seconds since 1904-01-01 */ |
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unsigned long lower; /* FIXME: These values seem to be wrong */ |
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}; |
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|
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struct ntp_packet { |
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unsigned char li_vn_mode; |
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unsigned char stratum; |
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unsigned char poll; |
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char precision; |
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|
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unsigned long root_delay; |
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unsigned long root_dispersion; |
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unsigned long reference_id; |
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|
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struct ntp_ts reference_timestamp; |
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struct ntp_ts origin_timestamp; |
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struct ntp_ts receive_timestamp; |
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struct ntp_ts transmit_timestamp; |
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}; |
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|
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typedef long minutes_t; |
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|
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enum MacNTPError MacNTPFetchTime(char *ntp_url, struct ntp_packet *packet, OSErr *supplemental, minutes_t utc_offset); |
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|
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// For convenience, you can just pass ntp_packet from above to set the system time |
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// Optionally, you can care about the contents of ntp_packet and do things with it. |
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enum MacNTPError MacNTPSetSystemTime(struct ntp_packet *ntp, minutes_t utc_offset); |
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|
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#endif |