lilleman
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276 lines
7.2 KiB
TypeScript
276 lines
7.2 KiB
TypeScript
import type { WireType } from './types.ts';
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import { buffer, cstring, dest_address_array, int8, unsuccess_sme_array } from './types.ts';
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type CommandSpec = {
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id: number;
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params?: Record<string, WireType>;
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};
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const bindParams = {
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system_id: cstring,
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password: cstring,
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system_type: cstring,
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interface_version: int8,
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addr_ton: int8,
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addr_npi: int8,
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address_range: cstring,
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} as const;
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/**
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* Key order inside each `params` object is the order the fields appear on the wire. Reordering
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* them corrupts every PDU of that command, and moving a field after `short_message` also stops the
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* codec skipping the NULL octet some peers append to it.
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*/
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const specs = {
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alert_notification: {
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id: 0x00000102,
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params: {
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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esme_addr_ton: int8,
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esme_addr_npi: int8,
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esme_addr: cstring,
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},
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},
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bind_receiver: { id: 0x00000001, params: bindParams },
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bind_receiver_resp: { id: 0x80000001, params: { system_id: cstring } },
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bind_transmitter: { id: 0x00000002, params: bindParams },
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bind_transmitter_resp: { id: 0x80000002, params: { system_id: cstring } },
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bind_transceiver: { id: 0x00000009, params: bindParams },
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bind_transceiver_resp: { id: 0x80000009, params: { system_id: cstring } },
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broadcast_sm: {
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id: 0x00000111,
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params: {
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service_type: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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message_id: cstring,
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priority_flag: int8,
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schedule_delivery_time: cstring,
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validity_period: cstring,
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replace_if_present_flag: int8,
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data_coding: int8,
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sm_default_msg_id: int8,
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},
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},
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broadcast_sm_resp: {
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id: 0x80000111,
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params: { message_id: cstring },
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},
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cancel_broadcast_sm: {
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id: 0x00000113,
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params: {
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service_type: cstring,
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message_id: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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},
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},
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cancel_broadcast_sm_resp: { id: 0x80000113 },
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cancel_sm: {
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id: 0x00000008,
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params: {
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service_type: cstring,
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message_id: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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dest_addr_ton: int8,
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dest_addr_npi: int8,
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destination_addr: cstring,
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},
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},
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cancel_sm_resp: { id: 0x80000008 },
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data_sm: {
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id: 0x00000103,
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params: {
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service_type: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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dest_addr_ton: int8,
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dest_addr_npi: int8,
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destination_addr: cstring,
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esm_class: int8,
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registered_delivery: int8,
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data_coding: int8,
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},
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},
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data_sm_resp: { id: 0x80000103, params: { message_id: cstring } },
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deliver_sm: {
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id: 0x00000005,
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params: {
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service_type: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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dest_addr_ton: int8,
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dest_addr_npi: int8,
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destination_addr: cstring,
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esm_class: int8,
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protocol_id: int8,
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priority_flag: int8,
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schedule_delivery_time: cstring,
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validity_period: cstring,
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registered_delivery: int8,
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replace_if_present_flag: int8,
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data_coding: int8,
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sm_default_msg_id: int8,
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sm_length: int8,
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short_message: buffer,
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},
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},
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deliver_sm_resp: { id: 0x80000005, params: { message_id: cstring } },
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enquire_link: { id: 0x00000015 },
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enquire_link_resp: { id: 0x80000015 },
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generic_nack: { id: 0x80000000 },
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outbind: { id: 0x0000000B, params: { system_id: cstring, password: cstring } },
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query_broadcast_sm: {
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id: 0x00000112,
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params: {
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message_id: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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},
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},
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query_broadcast_sm_resp: { id: 0x80000112, params: { message_id: cstring } },
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query_sm: {
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id: 0x00000003,
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params: {
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message_id: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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},
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},
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query_sm_resp: {
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id: 0x80000003,
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params: {
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message_id: cstring,
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final_date: cstring,
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message_state: int8,
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error_code: int8,
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},
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},
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replace_sm: {
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id: 0x00000007,
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params: {
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message_id: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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schedule_delivery_time: cstring,
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validity_period: cstring,
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registered_delivery: int8,
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sm_default_msg_id: int8,
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sm_length: int8,
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short_message: buffer,
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},
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},
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replace_sm_resp: { id: 0x80000007 },
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submit_multi: {
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id: 0x00000021,
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params: {
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service_type: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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dest_address: dest_address_array,
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esm_class: int8,
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protocol_id: int8,
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priority_flag: int8,
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schedule_delivery_time: cstring,
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validity_period: cstring,
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registered_delivery: int8,
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replace_if_present_flag: int8,
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data_coding: int8,
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sm_default_msg_id: int8,
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sm_length: int8,
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short_message: buffer,
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},
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},
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submit_multi_resp: {
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id: 0x80000021,
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params: { message_id: cstring, unsuccess_sme: unsuccess_sme_array },
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},
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submit_sm: {
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id: 0x00000004,
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params: {
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service_type: cstring,
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source_addr_ton: int8,
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source_addr_npi: int8,
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source_addr: cstring,
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dest_addr_ton: int8,
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dest_addr_npi: int8,
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destination_addr: cstring,
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esm_class: int8,
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protocol_id: int8,
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priority_flag: int8,
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schedule_delivery_time: cstring,
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validity_period: cstring,
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registered_delivery: int8,
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replace_if_present_flag: int8,
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data_coding: int8,
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sm_default_msg_id: int8,
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sm_length: int8,
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short_message: buffer,
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},
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},
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submit_sm_resp: { id: 0x80000004, params: { message_id: cstring } },
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unbind: { id: 0x00000006 },
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unbind_resp: { id: 0x80000006 },
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} satisfies Record<string, CommandSpec>;
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export type CommandName = keyof typeof specs;
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type ParamsSpecOf<C extends CommandName> = (typeof specs)[C] extends { params: infer P } ? P : Record<never, never>;
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/** Parameters as they come off the wire: every field the command defines, always present. */
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export type PduParams<C extends CommandName = CommandName> = {
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[K in keyof ParamsSpecOf<C>]: ParamsSpecOf<C>[K] extends WireType<infer V> ? V : never;
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};
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/** Parameters callers supply: all optional, and numbers are accepted for the string fields. */
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export type PduParamsInput<C extends CommandName = CommandName> = {
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[K in keyof ParamsSpecOf<C>]?: ParamsSpecOf<C>[K] extends WireType<infer V>
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? V extends string ? number | string
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: V extends Buffer ? Buffer | string
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: V
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: never;
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};
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export type CommandDefinition = CommandSpec & { command: string };
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export const cmds: Record<string, CommandDefinition> = {};
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export const cmdsById: Record<number, CommandDefinition> = {};
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for (const [command, spec] of Object.entries<CommandSpec>(specs)) {
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const definition: CommandDefinition = { ...spec, command };
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cmds[command] = definition;
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cmdsById[spec.id] = definition;
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}
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export function isCommandName(value: unknown): value is CommandName {
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return typeof value === 'string' && Object.hasOwn(specs, value);
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}
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export function commandNameById(id: number): CommandName | undefined {
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const command = cmdsById[id]?.command;
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return isCommandName(command) ? command : undefined;
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}
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/** The response SMPP pairs with a request command, where it has one. */
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export function respNameFor(cmdName: CommandName | undefined): CommandName | undefined {
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if (cmdName === undefined) return undefined;
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const respName = `${cmdName}_resp`;
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return isCommandName(respName) ? respName : undefined;
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}
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