2178d6a70c
A maintainable, extensible BitTorrent client (C11, Linux/io_uring) targeting 10 GbE saturation. All torrent functionality is built from scratch; liburing is the only linked third-party dependency on the data path. Implements Phases 1-7 of the roadmap: - core: page-aligned buffer pool, MPMC/Treiber queues, bitfields, worker pool - crypto: SHA-1/256 (SHA-NI + scalar), Merkle (BEP-52), RC4 (MSE) - bencode/metainfo: zero-copy parser, v1/v2/hybrid .torrent + magnet - peer: sans-IO wire codec, MSE/PE handshake state machine, BEP-10, ut_metadata, PEX - piece/storage: block-level multi-peer engine, rarest-first + endgame, per-file completion events + single-file relocate (move-as-you-finish) - tracker/dht: HTTP + UDP (BEP-15) trackers, BEP-5 KRPC iterative lookup - platform: io_uring reactor (SQPOLL, registered buffers, SEND_ZC) - surface: versioned RPC, native plugin ABI, sandboxed Lua scripting, nautd/nautctl Verified against libtorrent (single/multi/hybrid, MSE, magnet-via-DHT, swarm); unit + interop tests green; ASan/UBSan/TSan clean. Scripting reference in docs/scripting.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
#include "naut/naut_plugin.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef struct {
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uint8_t *data;
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size_t capacity;
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} memory_storage;
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static unsigned finished_events;
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static void *memory_open(const char *root, naut_err *error) {
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(void)root;
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memory_storage *storage = calloc(1, sizeof(*storage));
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if (!storage) {
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*error = NAUT_ERR_NOMEM;
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return NULL;
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}
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storage->capacity = 1u << 20;
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storage->data = calloc(1, storage->capacity);
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if (!storage->data) {
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free(storage);
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*error = NAUT_ERR_NOMEM;
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return NULL;
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}
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*error = NAUT_OK;
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return storage;
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}
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static void memory_close(void *opaque) {
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memory_storage *storage = opaque;
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free(storage->data);
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free(storage);
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}
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static naut_err memory_read(void *opaque, int64_t offset,
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void *buffer, size_t length) {
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memory_storage *storage = opaque;
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if (offset < 0 || (uint64_t)offset + length > storage->capacity)
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return NAUT_ERR_RANGE;
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memcpy(buffer, storage->data + offset, length);
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return NAUT_OK;
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}
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static naut_err memory_write(void *opaque, int64_t offset,
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const void *buffer, size_t length) {
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memory_storage *storage = opaque;
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if (offset < 0 || (uint64_t)offset + length > storage->capacity)
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return NAUT_ERR_RANGE;
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memcpy(storage->data + offset, buffer, length);
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return NAUT_OK;
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}
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static naut_err example_events(void *context, const char *request,
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char **response) {
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(void)context;
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(void)request;
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char buffer[64];
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snprintf(buffer, sizeof buffer, "{\"finished\":%u}", finished_events);
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*response = strdup(buffer);
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return *response ? NAUT_OK : NAUT_ERR_NOMEM;
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}
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static void on_event(void *context, const naut_event *event) {
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(void)context;
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if (event->type == NAUT_EVENT_TORRENT_FINISHED) finished_events++;
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}
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naut_err naut_plugin_register(const naut_host_api *host) {
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if (!host || host->abi_version != NAUT_PLUGIN_ABI_VERSION ||
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host->struct_size < sizeof(*host))
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return NAUT_ERR_INVAL;
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static const naut_storage_backend_v1 storage = {
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.abi_version = NAUT_PLUGIN_ABI_VERSION,
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.struct_size = sizeof(storage),
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.name = "memory",
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.open = memory_open,
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.close = memory_close,
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.read = memory_read,
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.write = memory_write,
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};
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naut_err error = host->set_plugin_name(host->host_context, "example");
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if (error == NAUT_OK)
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error = host->register_storage_backend(host->host_context, &storage);
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if (error == NAUT_OK)
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error = host->register_rpc(host->host_context, "example.events",
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example_events, NULL);
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if (error == NAUT_OK)
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error = host->subscribe_event(host->host_context, on_event, NULL);
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return error;
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}
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