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Fixing whitelist and blacklist functionality

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Your Name
2025-09-30 15:02:49 -04:00
parent c1a6e92b1d
commit f7b463aca1
19 changed files with 3651 additions and 3997 deletions
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2
Makefile
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@@ -9,7 +9,7 @@ LIBS = -lsqlite3 -lwebsockets -lz -ldl -lpthread -lm -L/usr/local/lib -lsecp256k
BUILD_DIR = build
# Source files
MAIN_SRC = src/main.c src/config.c src/request_validator.c
MAIN_SRC = src/main.c src/config.c src/request_validator.c src/nip009.c src/nip011.c src/nip013.c src/nip040.c src/nip042.c src/websockets.c src/subscriptions.c
NOSTR_CORE_LIB = nostr_core_lib/libnostr_core_x64.a
# Architecture detection

134
api/button.html
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@@ -1,134 +0,0 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Embedded NOSTR_LOGIN_LITE</title>
<style>
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
margin: 0;
padding: 40px;
background: white;
display: flex;
justify-content: center;
align-items: center;
min-height: 90vh;
}
.container {
max-width: 400px;
width: 100%;
}
#login-button {
background: #0066cc;
color: white;
padding: 12px 24px;
border: none;
border-radius: 6px;
cursor: pointer;
font-size: 16px;
text-align: center;
transition: background 0.2s;
}
#login-button:hover {
opacity: 0.8;
}
</style>
</head>
<body>
<div class="container">
<div id="login-button">Login</div>
</div>
<script src="../lite/nostr.bundle.js"></script>
<script src="../lite/nostr-lite.js"></script>
<script>
let isAuthenticated = false;
let currentUser = null;
document.addEventListener('DOMContentLoaded', async () => {
await window.NOSTR_LOGIN_LITE.init({
methods: {
extension: true,
local: true,
readonly: true,
connect: true,
remote: true,
otp: true
},
floatingTab: {
enabled: false
}
});
// Listen for authentication events
window.addEventListener('nlMethodSelected', handleAuthEvent);
window.addEventListener('nlLogout', handleLogoutEvent);
// Check for existing authentication state
checkAuthState();
// Initialize button
updateButtonState();
});
function handleAuthEvent(event) {
const { pubkey, method } = event.detail;
console.log(`Authenticated with ${method}, pubkey: ${pubkey}`);
isAuthenticated = true;
currentUser = event.detail;
updateButtonState();
}
function handleLogoutEvent() {
console.log('Logout event received');
isAuthenticated = false;
currentUser = null;
updateButtonState();
}
function checkAuthState() {
// Check if user is already authenticated (from persistent storage)
try {
// Try to get public key - this will work if already authenticated
window.nostr.getPublicKey().then(pubkey => {
console.log('Found existing authentication, pubkey:', pubkey);
isAuthenticated = true;
currentUser = { pubkey, method: 'persistent' };
updateButtonState();
}).catch(error => {
console.log('No existing authentication found:', error.message);
// User is not authenticated, button stays in login state
});
} catch (error) {
console.log('No existing authentication found');
// User is not authenticated, button stays in login state
}
}
function updateButtonState() {
const button = document.getElementById('login-button');
if (isAuthenticated) {
button.textContent = 'Logout';
button.onclick = () => window.NOSTR_LOGIN_LITE.logout();
button.style.background = '#dc3545'; // Red for logout
} else {
button.textContent = 'Login';
button.onclick = () => window.NOSTR_LOGIN_LITE.launch('login');
button.style.background = '#0066cc'; // Blue for login
}
}
</script>
</body>
</html>

26
api/index.html
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@@ -547,7 +547,7 @@
<!-- Testing Section -->
<div id="div_config" class="section flex-section">
<div id="div_config" class="section flex-section" style="display: none;">
<h2>RELAY CONFIGURATION</h2>
<div id="config-display" class="hidden">
<div id="config-view-mode">
@@ -616,13 +616,12 @@
<div id="authRuleInputSections" style="display: block;">
<!-- Combined Pubkey Auth Rule Section -->
<div class="auth-rule-section">
<h3>MANAGE PUBKEY ACCESS</h3>
<p>Add pubkeys to whitelist (allow) or blacklist (deny) access</p>
<div class="input-group">
<label for="authRulePubkey">Pubkey (nsec or hex):</label>
<input type="text" id="authRulePubkey" placeholder="nsec1... or 64-character hex pubkey">
<small id="authRuleHelp">Enter nsec (will auto-convert) or 64-character hex pubkey</small>
</div>
<div id="whitelistWarning" class="warning-box" style="display: none;">
<strong>⚠️ WARNING:</strong> Adding whitelist rules changes relay behavior to whitelist-only
@@ -636,7 +635,7 @@
BLACKLIST</button>
<button type="button" id="refreshAuthRulesBtn">REFRESH</button>
</div>
</div>
</div>
@@ -975,6 +974,7 @@
// Step 4: Update UI
updateRelayConnectionStatus('connected');
updateAdminSectionsVisibility();
// Step 5: Relay URL updated
@@ -1034,6 +1034,7 @@
// Update UI
updateRelayConnectionStatus('disconnected');
hideRelayInfo();
updateAdminSectionsVisibility();
log('Disconnected from relay', 'INFO');
@@ -1280,7 +1281,7 @@
loginSection.classList.remove('hidden');
updateConfigStatus(false);
updateLoginLogoutButton();
hideAuthRulesSection();
updateAdminSectionsVisibility();
console.log('Logout event handled successfully');
}
@@ -1298,11 +1299,22 @@
}
}
// Update visibility of admin sections based on login and relay connection status
function updateAdminSectionsVisibility() {
const divConfig = document.getElementById('div_config');
const authRulesSection = document.getElementById('authRulesSection');
const shouldShow = isLoggedIn && isRelayConnected;
if (divConfig) divConfig.style.display = shouldShow ? 'block' : 'none';
if (authRulesSection) authRulesSection.style.display = shouldShow ? 'block' : 'none';
}
// Show main interface after login
function showMainInterface() {
loginSection.classList.add('hidden');
// mainInterface.classList.remove('hidden');
updateLoginLogoutButton();
updateAdminSectionsVisibility();
}
// Load user profile using nostr-tools pool

2
relay.pid
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@@ -1 +1 @@
1412551
1487904

2802
src/main.c
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File diff suppressed because it is too large Load Diff

313
src/nip009.c Normal file
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@@ -0,0 +1,313 @@
#define _GNU_SOURCE
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// NIP-09 EVENT DELETION REQUEST HANDLING
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
#include <cjson/cJSON.h>
#include <sqlite3.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <printf.h>
// Forward declarations for logging functions
void log_warning(const char* message);
void log_info(const char* message);
// Forward declaration for database functions
int store_event(cJSON* event);
// Forward declarations for deletion functions
int delete_events_by_id(const char* requester_pubkey, cJSON* event_ids);
int delete_events_by_address(const char* requester_pubkey, cJSON* addresses, long deletion_timestamp);
// Global database variable
extern sqlite3* g_db;
// Handle NIP-09 deletion request event (kind 5)
int handle_deletion_request(cJSON* event, char* error_message, size_t error_size) {
if (!event) {
snprintf(error_message, error_size, "invalid: null deletion request");
return -1;
}
// Extract event details
cJSON* kind_obj = cJSON_GetObjectItem(event, "kind");
cJSON* pubkey_obj = cJSON_GetObjectItem(event, "pubkey");
cJSON* created_at_obj = cJSON_GetObjectItem(event, "created_at");
cJSON* tags_obj = cJSON_GetObjectItem(event, "tags");
cJSON* content_obj = cJSON_GetObjectItem(event, "content");
cJSON* event_id_obj = cJSON_GetObjectItem(event, "id");
if (!kind_obj || !pubkey_obj || !created_at_obj || !tags_obj || !event_id_obj) {
snprintf(error_message, error_size, "invalid: incomplete deletion request");
return -1;
}
int kind = (int)cJSON_GetNumberValue(kind_obj);
if (kind != 5) {
snprintf(error_message, error_size, "invalid: not a deletion request");
return -1;
}
const char* requester_pubkey = cJSON_GetStringValue(pubkey_obj);
// Extract deletion event ID and reason (for potential logging)
const char* deletion_event_id = cJSON_GetStringValue(event_id_obj);
const char* reason = content_obj ? cJSON_GetStringValue(content_obj) : "";
(void)deletion_event_id; // Mark as intentionally unused for now
(void)reason; // Mark as intentionally unused for now
long deletion_timestamp = (long)cJSON_GetNumberValue(created_at_obj);
if (!cJSON_IsArray(tags_obj)) {
snprintf(error_message, error_size, "invalid: deletion request tags must be an array");
return -1;
}
// Collect event IDs and addresses from tags
cJSON* event_ids = cJSON_CreateArray();
cJSON* addresses = cJSON_CreateArray();
cJSON* kinds_to_delete = cJSON_CreateArray();
int deletion_targets_found = 0;
cJSON* tag = NULL;
cJSON_ArrayForEach(tag, tags_obj) {
if (!cJSON_IsArray(tag) || cJSON_GetArraySize(tag) < 2) {
continue;
}
cJSON* tag_name = cJSON_GetArrayItem(tag, 0);
cJSON* tag_value = cJSON_GetArrayItem(tag, 1);
if (!cJSON_IsString(tag_name) || !cJSON_IsString(tag_value)) {
continue;
}
const char* name = cJSON_GetStringValue(tag_name);
const char* value = cJSON_GetStringValue(tag_value);
if (strcmp(name, "e") == 0) {
// Event ID reference
cJSON_AddItemToArray(event_ids, cJSON_CreateString(value));
deletion_targets_found++;
} else if (strcmp(name, "a") == 0) {
// Addressable event reference (kind:pubkey:d-identifier)
cJSON_AddItemToArray(addresses, cJSON_CreateString(value));
deletion_targets_found++;
} else if (strcmp(name, "k") == 0) {
// Kind hint - store for validation but not required
int kind_hint = atoi(value);
if (kind_hint > 0) {
cJSON_AddItemToArray(kinds_to_delete, cJSON_CreateNumber(kind_hint));
}
}
}
if (deletion_targets_found == 0) {
cJSON_Delete(event_ids);
cJSON_Delete(addresses);
cJSON_Delete(kinds_to_delete);
snprintf(error_message, error_size, "invalid: deletion request must contain 'e' or 'a' tags");
return -1;
}
int deleted_count = 0;
// Process event ID deletions
if (cJSON_GetArraySize(event_ids) > 0) {
int result = delete_events_by_id(requester_pubkey, event_ids);
if (result > 0) {
deleted_count += result;
}
}
// Process addressable event deletions
if (cJSON_GetArraySize(addresses) > 0) {
int result = delete_events_by_address(requester_pubkey, addresses, deletion_timestamp);
if (result > 0) {
deleted_count += result;
}
}
// Clean up
cJSON_Delete(event_ids);
cJSON_Delete(addresses);
cJSON_Delete(kinds_to_delete);
// Store the deletion request itself (it should be kept according to NIP-09)
if (store_event(event) != 0) {
log_warning("Failed to store deletion request event");
}
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Deletion request processed: %d events deleted", deleted_count);
log_info(debug_msg);
error_message[0] = '\0'; // Success - empty error message
return 0;
}
// Delete events by ID (with pubkey authorization)
int delete_events_by_id(const char* requester_pubkey, cJSON* event_ids) {
if (!g_db || !requester_pubkey || !event_ids || !cJSON_IsArray(event_ids)) {
return 0;
}
int deleted_count = 0;
cJSON* event_id = NULL;
cJSON_ArrayForEach(event_id, event_ids) {
if (!cJSON_IsString(event_id)) {
continue;
}
const char* id = cJSON_GetStringValue(event_id);
// First check if event exists and if requester is authorized
const char* check_sql = "SELECT pubkey FROM events WHERE id = ?";
sqlite3_stmt* check_stmt;
int rc = sqlite3_prepare_v2(g_db, check_sql, -1, &check_stmt, NULL);
if (rc != SQLITE_OK) {
continue;
}
sqlite3_bind_text(check_stmt, 1, id, -1, SQLITE_STATIC);
if (sqlite3_step(check_stmt) == SQLITE_ROW) {
const char* event_pubkey = (char*)sqlite3_column_text(check_stmt, 0);
// Only delete if the requester is the author
if (event_pubkey && strcmp(event_pubkey, requester_pubkey) == 0) {
sqlite3_finalize(check_stmt);
// Delete the event
const char* delete_sql = "DELETE FROM events WHERE id = ? AND pubkey = ?";
sqlite3_stmt* delete_stmt;
rc = sqlite3_prepare_v2(g_db, delete_sql, -1, &delete_stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(delete_stmt, 1, id, -1, SQLITE_STATIC);
sqlite3_bind_text(delete_stmt, 2, requester_pubkey, -1, SQLITE_STATIC);
if (sqlite3_step(delete_stmt) == SQLITE_DONE && sqlite3_changes(g_db) > 0) {
deleted_count++;
char debug_msg[128];
snprintf(debug_msg, sizeof(debug_msg), "Deleted event by ID: %.16s...", id);
log_info(debug_msg);
}
sqlite3_finalize(delete_stmt);
}
} else {
sqlite3_finalize(check_stmt);
char warning_msg[128];
snprintf(warning_msg, sizeof(warning_msg), "Unauthorized deletion attempt for event: %.16s...", id);
log_warning(warning_msg);
}
} else {
sqlite3_finalize(check_stmt);
char debug_msg[128];
snprintf(debug_msg, sizeof(debug_msg), "Event not found for deletion: %.16s...", id);
log_info(debug_msg);
}
}
return deleted_count;
}
// Delete events by addressable reference (kind:pubkey:d-identifier)
int delete_events_by_address(const char* requester_pubkey, cJSON* addresses, long deletion_timestamp) {
if (!g_db || !requester_pubkey || !addresses || !cJSON_IsArray(addresses)) {
return 0;
}
int deleted_count = 0;
cJSON* address = NULL;
cJSON_ArrayForEach(address, addresses) {
if (!cJSON_IsString(address)) {
continue;
}
const char* addr = cJSON_GetStringValue(address);
// Parse address format: kind:pubkey:d-identifier
char* addr_copy = strdup(addr);
if (!addr_copy) continue;
char* kind_str = strtok(addr_copy, ":");
char* pubkey_str = strtok(NULL, ":");
char* d_identifier = strtok(NULL, ":");
if (!kind_str || !pubkey_str) {
free(addr_copy);
continue;
}
int kind = atoi(kind_str);
// Only delete if the requester is the author
if (strcmp(pubkey_str, requester_pubkey) != 0) {
free(addr_copy);
char warning_msg[128];
snprintf(warning_msg, sizeof(warning_msg), "Unauthorized deletion attempt for address: %.32s...", addr);
log_warning(warning_msg);
continue;
}
// Build deletion query based on whether we have d-identifier
const char* delete_sql;
sqlite3_stmt* delete_stmt;
if (d_identifier && strlen(d_identifier) > 0) {
// Delete specific addressable event with d-tag
delete_sql = "DELETE FROM events WHERE kind = ? AND pubkey = ? AND created_at <= ? "
"AND json_extract(tags, '$[*]') LIKE '%[\"d\",\"' || ? || '\"]%'";
} else {
// Delete all events of this kind by this author up to deletion timestamp
delete_sql = "DELETE FROM events WHERE kind = ? AND pubkey = ? AND created_at <= ?";
}
int rc = sqlite3_prepare_v2(g_db, delete_sql, -1, &delete_stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_int(delete_stmt, 1, kind);
sqlite3_bind_text(delete_stmt, 2, requester_pubkey, -1, SQLITE_STATIC);
sqlite3_bind_int64(delete_stmt, 3, deletion_timestamp);
if (d_identifier && strlen(d_identifier) > 0) {
sqlite3_bind_text(delete_stmt, 4, d_identifier, -1, SQLITE_STATIC);
}
if (sqlite3_step(delete_stmt) == SQLITE_DONE) {
int changes = sqlite3_changes(g_db);
if (changes > 0) {
deleted_count += changes;
char debug_msg[128];
snprintf(debug_msg, sizeof(debug_msg), "Deleted %d events by address: %.32s...", changes, addr);
log_info(debug_msg);
}
}
sqlite3_finalize(delete_stmt);
}
free(addr_copy);
}
return deleted_count;
}
// Mark event as deleted (alternative to hard deletion - not used in current implementation)
int mark_event_as_deleted(const char* event_id, const char* deletion_event_id, const char* reason) {
(void)event_id; (void)deletion_event_id; (void)reason; // Suppress unused warnings
// This function could be used if we wanted to implement soft deletion
// For now, NIP-09 implementation uses hard deletion as specified
return 0;
}

454
src/nip011.c Normal file
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@@ -0,0 +1,454 @@
// NIP-11 Relay Information Document module
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <libwebsockets.h>
#include "../nostr_core_lib/cjson/cJSON.h"
#include "config.h"
// Forward declarations for logging functions
void log_info(const char* message);
void log_success(const char* message);
void log_error(const char* message);
void log_warning(const char* message);
// Forward declarations for configuration functions
const char* get_config_value(const char* key);
int get_config_int(const char* key, int default_value);
int get_config_bool(const char* key, int default_value);
// Forward declarations for global cache access
extern unified_config_cache_t g_unified_cache;
// Forward declarations for constants (defined in config.h and other headers)
#define HTTP_STATUS_OK 200
#define HTTP_STATUS_NOT_ACCEPTABLE 406
#define HTTP_STATUS_INTERNAL_SERVER_ERROR 500
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// NIP-11 RELAY INFORMATION DOCUMENT
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// Initialize relay information using configuration system
void init_relay_info() {
// Get all config values first (without holding mutex to avoid deadlock)
const char* relay_name = get_config_value("relay_name");
const char* relay_description = get_config_value("relay_description");
const char* relay_software = get_config_value("relay_software");
const char* relay_version = get_config_value("relay_version");
const char* relay_contact = get_config_value("relay_contact");
const char* relay_pubkey = get_config_value("relay_pubkey");
// Get config values for limitations
int max_message_length = get_config_int("max_message_length", 16384);
int max_subscriptions_per_client = get_config_int("max_subscriptions_per_client", 20);
int max_limit = get_config_int("max_limit", 5000);
int max_event_tags = get_config_int("max_event_tags", 100);
int max_content_length = get_config_int("max_content_length", 8196);
int default_limit = get_config_int("default_limit", 500);
int admin_enabled = get_config_bool("admin_enabled", 0);
pthread_mutex_lock(&g_unified_cache.cache_lock);
// Update relay information fields
if (relay_name) {
strncpy(g_unified_cache.relay_info.name, relay_name, sizeof(g_unified_cache.relay_info.name) - 1);
} else {
strncpy(g_unified_cache.relay_info.name, "C Nostr Relay", sizeof(g_unified_cache.relay_info.name) - 1);
}
if (relay_description) {
strncpy(g_unified_cache.relay_info.description, relay_description, sizeof(g_unified_cache.relay_info.description) - 1);
} else {
strncpy(g_unified_cache.relay_info.description, "A high-performance Nostr relay implemented in C with SQLite storage", sizeof(g_unified_cache.relay_info.description) - 1);
}
if (relay_software) {
strncpy(g_unified_cache.relay_info.software, relay_software, sizeof(g_unified_cache.relay_info.software) - 1);
} else {
strncpy(g_unified_cache.relay_info.software, "https://git.laantungir.net/laantungir/c-relay.git", sizeof(g_unified_cache.relay_info.software) - 1);
}
if (relay_version) {
strncpy(g_unified_cache.relay_info.version, relay_version, sizeof(g_unified_cache.relay_info.version) - 1);
} else {
strncpy(g_unified_cache.relay_info.version, "0.2.0", sizeof(g_unified_cache.relay_info.version) - 1);
}
if (relay_contact) {
strncpy(g_unified_cache.relay_info.contact, relay_contact, sizeof(g_unified_cache.relay_info.contact) - 1);
}
if (relay_pubkey) {
strncpy(g_unified_cache.relay_info.pubkey, relay_pubkey, sizeof(g_unified_cache.relay_info.pubkey) - 1);
}
// Initialize supported NIPs array
g_unified_cache.relay_info.supported_nips = cJSON_CreateArray();
if (g_unified_cache.relay_info.supported_nips) {
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(1)); // NIP-01: Basic protocol
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(9)); // NIP-09: Event deletion
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(11)); // NIP-11: Relay information
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(13)); // NIP-13: Proof of Work
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(15)); // NIP-15: EOSE
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(20)); // NIP-20: Command results
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(40)); // NIP-40: Expiration Timestamp
cJSON_AddItemToArray(g_unified_cache.relay_info.supported_nips, cJSON_CreateNumber(42)); // NIP-42: Authentication
}
// Initialize server limitations using configuration
g_unified_cache.relay_info.limitation = cJSON_CreateObject();
if (g_unified_cache.relay_info.limitation) {
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_message_length", max_message_length);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_subscriptions", max_subscriptions_per_client);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_limit", max_limit);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_subid_length", SUBSCRIPTION_ID_MAX_LENGTH);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_event_tags", max_event_tags);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "max_content_length", max_content_length);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "min_pow_difficulty", g_unified_cache.pow_config.min_pow_difficulty);
cJSON_AddBoolToObject(g_unified_cache.relay_info.limitation, "auth_required", admin_enabled ? cJSON_True : cJSON_False);
cJSON_AddBoolToObject(g_unified_cache.relay_info.limitation, "payment_required", cJSON_False);
cJSON_AddBoolToObject(g_unified_cache.relay_info.limitation, "restricted_writes", cJSON_False);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "created_at_lower_limit", 0);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "created_at_upper_limit", 2147483647);
cJSON_AddNumberToObject(g_unified_cache.relay_info.limitation, "default_limit", default_limit);
}
// Initialize empty retention policies (can be configured later)
g_unified_cache.relay_info.retention = cJSON_CreateArray();
// Initialize language tags - set to global for now
g_unified_cache.relay_info.language_tags = cJSON_CreateArray();
if (g_unified_cache.relay_info.language_tags) {
cJSON_AddItemToArray(g_unified_cache.relay_info.language_tags, cJSON_CreateString("*"));
}
// Initialize relay countries - set to global for now
g_unified_cache.relay_info.relay_countries = cJSON_CreateArray();
if (g_unified_cache.relay_info.relay_countries) {
cJSON_AddItemToArray(g_unified_cache.relay_info.relay_countries, cJSON_CreateString("*"));
}
// Initialize content tags as empty array
g_unified_cache.relay_info.tags = cJSON_CreateArray();
// Initialize fees as empty object (no payment required by default)
g_unified_cache.relay_info.fees = cJSON_CreateObject();
pthread_mutex_unlock(&g_unified_cache.cache_lock);
log_success("Relay information initialized with default values");
}
// Clean up relay information JSON objects
void cleanup_relay_info() {
pthread_mutex_lock(&g_unified_cache.cache_lock);
if (g_unified_cache.relay_info.supported_nips) {
cJSON_Delete(g_unified_cache.relay_info.supported_nips);
g_unified_cache.relay_info.supported_nips = NULL;
}
if (g_unified_cache.relay_info.limitation) {
cJSON_Delete(g_unified_cache.relay_info.limitation);
g_unified_cache.relay_info.limitation = NULL;
}
if (g_unified_cache.relay_info.retention) {
cJSON_Delete(g_unified_cache.relay_info.retention);
g_unified_cache.relay_info.retention = NULL;
}
if (g_unified_cache.relay_info.language_tags) {
cJSON_Delete(g_unified_cache.relay_info.language_tags);
g_unified_cache.relay_info.language_tags = NULL;
}
if (g_unified_cache.relay_info.relay_countries) {
cJSON_Delete(g_unified_cache.relay_info.relay_countries);
g_unified_cache.relay_info.relay_countries = NULL;
}
if (g_unified_cache.relay_info.tags) {
cJSON_Delete(g_unified_cache.relay_info.tags);
g_unified_cache.relay_info.tags = NULL;
}
if (g_unified_cache.relay_info.fees) {
cJSON_Delete(g_unified_cache.relay_info.fees);
g_unified_cache.relay_info.fees = NULL;
}
pthread_mutex_unlock(&g_unified_cache.cache_lock);
}
// Generate NIP-11 compliant JSON document
cJSON* generate_relay_info_json() {
cJSON* info = cJSON_CreateObject();
if (!info) {
log_error("Failed to create relay info JSON object");
return NULL;
}
pthread_mutex_lock(&g_unified_cache.cache_lock);
// Add basic relay information
if (strlen(g_unified_cache.relay_info.name) > 0) {
cJSON_AddStringToObject(info, "name", g_unified_cache.relay_info.name);
}
if (strlen(g_unified_cache.relay_info.description) > 0) {
cJSON_AddStringToObject(info, "description", g_unified_cache.relay_info.description);
}
if (strlen(g_unified_cache.relay_info.banner) > 0) {
cJSON_AddStringToObject(info, "banner", g_unified_cache.relay_info.banner);
}
if (strlen(g_unified_cache.relay_info.icon) > 0) {
cJSON_AddStringToObject(info, "icon", g_unified_cache.relay_info.icon);
}
if (strlen(g_unified_cache.relay_info.pubkey) > 0) {
cJSON_AddStringToObject(info, "pubkey", g_unified_cache.relay_info.pubkey);
}
if (strlen(g_unified_cache.relay_info.contact) > 0) {
cJSON_AddStringToObject(info, "contact", g_unified_cache.relay_info.contact);
}
// Add supported NIPs
if (g_unified_cache.relay_info.supported_nips) {
cJSON_AddItemToObject(info, "supported_nips", cJSON_Duplicate(g_unified_cache.relay_info.supported_nips, 1));
}
// Add software information
if (strlen(g_unified_cache.relay_info.software) > 0) {
cJSON_AddStringToObject(info, "software", g_unified_cache.relay_info.software);
}
if (strlen(g_unified_cache.relay_info.version) > 0) {
cJSON_AddStringToObject(info, "version", g_unified_cache.relay_info.version);
}
// Add policies
if (strlen(g_unified_cache.relay_info.privacy_policy) > 0) {
cJSON_AddStringToObject(info, "privacy_policy", g_unified_cache.relay_info.privacy_policy);
}
if (strlen(g_unified_cache.relay_info.terms_of_service) > 0) {
cJSON_AddStringToObject(info, "terms_of_service", g_unified_cache.relay_info.terms_of_service);
}
if (strlen(g_unified_cache.relay_info.posting_policy) > 0) {
cJSON_AddStringToObject(info, "posting_policy", g_unified_cache.relay_info.posting_policy);
}
// Add server limitations
if (g_unified_cache.relay_info.limitation) {
cJSON_AddItemToObject(info, "limitation", cJSON_Duplicate(g_unified_cache.relay_info.limitation, 1));
}
// Add retention policies if configured
if (g_unified_cache.relay_info.retention && cJSON_GetArraySize(g_unified_cache.relay_info.retention) > 0) {
cJSON_AddItemToObject(info, "retention", cJSON_Duplicate(g_unified_cache.relay_info.retention, 1));
}
// Add geographical and language information
if (g_unified_cache.relay_info.relay_countries) {
cJSON_AddItemToObject(info, "relay_countries", cJSON_Duplicate(g_unified_cache.relay_info.relay_countries, 1));
}
if (g_unified_cache.relay_info.language_tags) {
cJSON_AddItemToObject(info, "language_tags", cJSON_Duplicate(g_unified_cache.relay_info.language_tags, 1));
}
if (g_unified_cache.relay_info.tags && cJSON_GetArraySize(g_unified_cache.relay_info.tags) > 0) {
cJSON_AddItemToObject(info, "tags", cJSON_Duplicate(g_unified_cache.relay_info.tags, 1));
}
// Add payment information if configured
if (strlen(g_unified_cache.relay_info.payments_url) > 0) {
cJSON_AddStringToObject(info, "payments_url", g_unified_cache.relay_info.payments_url);
}
if (g_unified_cache.relay_info.fees && cJSON_GetObjectItem(g_unified_cache.relay_info.fees, "admission")) {
cJSON_AddItemToObject(info, "fees", cJSON_Duplicate(g_unified_cache.relay_info.fees, 1));
}
pthread_mutex_unlock(&g_unified_cache.cache_lock);
return info;
}
// NIP-11 HTTP session data structure for managing buffer lifetime
struct nip11_session_data {
char* json_buffer;
size_t json_length;
int headers_sent;
int body_sent;
};
// Handle NIP-11 HTTP request with proper asynchronous buffer management
int handle_nip11_http_request(struct lws* wsi, const char* accept_header) {
log_info("Handling NIP-11 relay information request");
// Check if client accepts application/nostr+json
int accepts_nostr_json = 0;
if (accept_header) {
if (strstr(accept_header, "application/nostr+json") != NULL) {
accepts_nostr_json = 1;
}
}
if (!accepts_nostr_json) {
log_warning("HTTP request without proper Accept header for NIP-11");
// Return 406 Not Acceptable
unsigned char buf[LWS_PRE + 256];
unsigned char *p = &buf[LWS_PRE];
unsigned char *start = p;
unsigned char *end = &buf[sizeof(buf) - 1];
if (lws_add_http_header_status(wsi, HTTP_STATUS_NOT_ACCEPTABLE, &p, end)) {
return -1;
}
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE, (unsigned char*)"text/plain", 10, &p, end)) {
return -1;
}
if (lws_add_http_header_content_length(wsi, 0, &p, end)) {
return -1;
}
if (lws_finalize_http_header(wsi, &p, end)) {
return -1;
}
lws_write(wsi, start, p - start, LWS_WRITE_HTTP_HEADERS);
return -1; // Close connection
}
// Generate relay information JSON
cJSON* info_json = generate_relay_info_json();
if (!info_json) {
log_error("Failed to generate relay info JSON");
unsigned char buf[LWS_PRE + 256];
unsigned char *p = &buf[LWS_PRE];
unsigned char *start = p;
unsigned char *end = &buf[sizeof(buf) - 1];
if (lws_add_http_header_status(wsi, HTTP_STATUS_INTERNAL_SERVER_ERROR, &p, end)) {
return -1;
}
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE, (unsigned char*)"text/plain", 10, &p, end)) {
return -1;
}
if (lws_add_http_header_content_length(wsi, 0, &p, end)) {
return -1;
}
if (lws_finalize_http_header(wsi, &p, end)) {
return -1;
}
lws_write(wsi, start, p - start, LWS_WRITE_HTTP_HEADERS);
return -1;
}
char* json_string = cJSON_Print(info_json);
cJSON_Delete(info_json);
if (!json_string) {
log_error("Failed to serialize relay info JSON");
unsigned char buf[LWS_PRE + 256];
unsigned char *p = &buf[LWS_PRE];
unsigned char *start = p;
unsigned char *end = &buf[sizeof(buf) - 1];
if (lws_add_http_header_status(wsi, HTTP_STATUS_INTERNAL_SERVER_ERROR, &p, end)) {
return -1;
}
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE, (unsigned char*)"text/plain", 10, &p, end)) {
return -1;
}
if (lws_add_http_header_content_length(wsi, 0, &p, end)) {
return -1;
}
if (lws_finalize_http_header(wsi, &p, end)) {
return -1;
}
lws_write(wsi, start, p - start, LWS_WRITE_HTTP_HEADERS);
return -1;
}
size_t json_len = strlen(json_string);
// Allocate session data to manage buffer lifetime across callbacks
struct nip11_session_data* session_data = malloc(sizeof(struct nip11_session_data));
if (!session_data) {
log_error("Failed to allocate NIP-11 session data");
free(json_string);
return -1;
}
// Store JSON buffer in session data for asynchronous handling
session_data->json_buffer = json_string;
session_data->json_length = json_len;
session_data->headers_sent = 0;
session_data->body_sent = 0;
// Store session data in WSI user data for callback access
lws_set_wsi_user(wsi, session_data);
// Prepare HTTP response with CORS headers
unsigned char buf[LWS_PRE + 1024];
unsigned char *p = &buf[LWS_PRE];
unsigned char *start = p;
unsigned char *end = &buf[sizeof(buf) - 1];
// Add status
if (lws_add_http_header_status(wsi, HTTP_STATUS_OK, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
// Add content type
if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE,
(unsigned char*)"application/nostr+json", 22, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
// Add content length
if (lws_add_http_header_content_length(wsi, json_len, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
// Add CORS headers as required by NIP-11
if (lws_add_http_header_by_name(wsi, (unsigned char*)"access-control-allow-origin:",
(unsigned char*)"*", 1, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
if (lws_add_http_header_by_name(wsi, (unsigned char*)"access-control-allow-headers:",
(unsigned char*)"content-type, accept", 20, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
if (lws_add_http_header_by_name(wsi, (unsigned char*)"access-control-allow-methods:",
(unsigned char*)"GET, OPTIONS", 12, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
// Finalize headers
if (lws_finalize_http_header(wsi, &p, end)) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
// Write headers
if (lws_write(wsi, start, p - start, LWS_WRITE_HTTP_HEADERS) < 0) {
free(session_data->json_buffer);
free(session_data);
return -1;
}
session_data->headers_sent = 1;
// Request callback for body transmission
lws_callback_on_writable(wsi);
log_success("NIP-11 headers sent, body transmission scheduled");
return 0;
}

190
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// NIP-13 Proof of Work validation module
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "../nostr_core_lib/cjson/cJSON.h"
#include "../nostr_core_lib/nostr_core/nostr_core.h"
#include "../nostr_core_lib/nostr_core/nip013.h"
#include "config.h"
// Forward declarations for logging functions
void log_info(const char* message);
void log_success(const char* message);
void log_error(const char* message);
void log_warning(const char* message);
// NIP-13 PoW configuration structure
struct pow_config {
int enabled; // 0 = disabled, 1 = enabled
int min_pow_difficulty; // Minimum required difficulty (0 = no requirement)
int validation_flags; // Bitflags for validation options
int require_nonce_tag; // 1 = require nonce tag presence
int reject_lower_targets; // 1 = reject if committed < actual difficulty
int strict_format; // 1 = enforce strict nonce tag format
int anti_spam_mode; // 1 = full anti-spam validation
};
// Initialize PoW configuration using configuration system
void init_pow_config() {
log_info("Initializing NIP-13 Proof of Work configuration");
// Get all config values first (without holding mutex to avoid deadlock)
int pow_enabled = get_config_bool("pow_enabled", 1);
int pow_min_difficulty = get_config_int("pow_min_difficulty", 0);
const char* pow_mode = get_config_value("pow_mode");
pthread_mutex_lock(&g_unified_cache.cache_lock);
// Load PoW settings from configuration system
g_unified_cache.pow_config.enabled = pow_enabled;
g_unified_cache.pow_config.min_pow_difficulty = pow_min_difficulty;
// Configure PoW mode
if (pow_mode) {
if (strcmp(pow_mode, "strict") == 0) {
g_unified_cache.pow_config.validation_flags = NOSTR_POW_VALIDATE_ANTI_SPAM | NOSTR_POW_STRICT_FORMAT;
g_unified_cache.pow_config.require_nonce_tag = 1;
g_unified_cache.pow_config.reject_lower_targets = 1;
g_unified_cache.pow_config.strict_format = 1;
g_unified_cache.pow_config.anti_spam_mode = 1;
log_info("PoW configured in strict anti-spam mode");
} else if (strcmp(pow_mode, "full") == 0) {
g_unified_cache.pow_config.validation_flags = NOSTR_POW_VALIDATE_FULL;
g_unified_cache.pow_config.require_nonce_tag = 1;
log_info("PoW configured in full validation mode");
} else if (strcmp(pow_mode, "basic") == 0) {
g_unified_cache.pow_config.validation_flags = NOSTR_POW_VALIDATE_BASIC;
log_info("PoW configured in basic validation mode");
} else if (strcmp(pow_mode, "disabled") == 0) {
g_unified_cache.pow_config.enabled = 0;
log_info("PoW validation disabled via configuration");
}
} else {
// Default to basic mode
g_unified_cache.pow_config.validation_flags = NOSTR_POW_VALIDATE_BASIC;
log_info("PoW configured in basic validation mode (default)");
}
// Log final configuration
char config_msg[512];
snprintf(config_msg, sizeof(config_msg),
"PoW Configuration: enabled=%s, min_difficulty=%d, validation_flags=0x%x, mode=%s",
g_unified_cache.pow_config.enabled ? "true" : "false",
g_unified_cache.pow_config.min_pow_difficulty,
g_unified_cache.pow_config.validation_flags,
g_unified_cache.pow_config.anti_spam_mode ? "anti-spam" :
(g_unified_cache.pow_config.validation_flags & NOSTR_POW_VALIDATE_FULL) ? "full" : "basic");
log_info(config_msg);
pthread_mutex_unlock(&g_unified_cache.cache_lock);
}
// Validate event Proof of Work according to NIP-13
int validate_event_pow(cJSON* event, char* error_message, size_t error_size) {
pthread_mutex_lock(&g_unified_cache.cache_lock);
int enabled = g_unified_cache.pow_config.enabled;
int min_pow_difficulty = g_unified_cache.pow_config.min_pow_difficulty;
int validation_flags = g_unified_cache.pow_config.validation_flags;
pthread_mutex_unlock(&g_unified_cache.cache_lock);
if (!enabled) {
return 0; // PoW validation disabled
}
if (!event) {
snprintf(error_message, error_size, "pow: null event");
return NOSTR_ERROR_INVALID_INPUT;
}
// If min_pow_difficulty is 0, only validate events that have nonce tags
// This allows events without PoW when difficulty requirement is 0
if (min_pow_difficulty == 0) {
cJSON* tags = cJSON_GetObjectItem(event, "tags");
int has_nonce_tag = 0;
if (tags && cJSON_IsArray(tags)) {
cJSON* tag = NULL;
cJSON_ArrayForEach(tag, tags) {
if (cJSON_IsArray(tag) && cJSON_GetArraySize(tag) >= 2) {
cJSON* tag_name = cJSON_GetArrayItem(tag, 0);
if (cJSON_IsString(tag_name)) {
const char* name = cJSON_GetStringValue(tag_name);
if (name && strcmp(name, "nonce") == 0) {
has_nonce_tag = 1;
break;
}
}
}
}
}
// If no minimum difficulty required and no nonce tag, skip PoW validation
if (!has_nonce_tag) {
return 0; // Accept event without PoW when min_difficulty=0
}
}
// Perform PoW validation using nostr_core_lib
nostr_pow_result_t pow_result;
int validation_result = nostr_validate_pow(event, min_pow_difficulty,
validation_flags, &pow_result);
if (validation_result != NOSTR_SUCCESS) {
// Handle specific error cases with appropriate messages
switch (validation_result) {
case NOSTR_ERROR_NIP13_INSUFFICIENT:
snprintf(error_message, error_size,
"pow: insufficient difficulty: %d < %d",
pow_result.actual_difficulty, min_pow_difficulty);
log_warning("Event rejected: insufficient PoW difficulty");
break;
case NOSTR_ERROR_NIP13_NO_NONCE_TAG:
// This should not happen with min_difficulty=0 after our check above
if (min_pow_difficulty > 0) {
snprintf(error_message, error_size, "pow: missing required nonce tag");
log_warning("Event rejected: missing nonce tag");
} else {
return 0; // Allow when min_difficulty=0
}
break;
case NOSTR_ERROR_NIP13_INVALID_NONCE_TAG:
snprintf(error_message, error_size, "pow: invalid nonce tag format");
log_warning("Event rejected: invalid nonce tag format");
break;
case NOSTR_ERROR_NIP13_TARGET_MISMATCH:
snprintf(error_message, error_size,
"pow: committed target (%d) lower than minimum (%d)",
pow_result.committed_target, min_pow_difficulty);
log_warning("Event rejected: committed target too low (anti-spam protection)");
break;
case NOSTR_ERROR_NIP13_CALCULATION:
snprintf(error_message, error_size, "pow: difficulty calculation failed");
log_error("PoW difficulty calculation error");
break;
case NOSTR_ERROR_EVENT_INVALID_ID:
snprintf(error_message, error_size, "pow: invalid event ID format");
log_warning("Event rejected: invalid event ID for PoW calculation");
break;
default:
snprintf(error_message, error_size, "pow: validation failed - %s",
strlen(pow_result.error_detail) > 0 ? pow_result.error_detail : "unknown error");
log_warning("Event rejected: PoW validation failed");
}
return validation_result;
}
// Log successful PoW validation (only if minimum difficulty is required)
if (min_pow_difficulty > 0 || pow_result.has_nonce_tag) {
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg),
"PoW validated: difficulty=%d, target=%d, nonce=%llu%s",
pow_result.actual_difficulty,
pow_result.committed_target,
(unsigned long long)pow_result.nonce_value,
pow_result.has_nonce_tag ? "" : " (no nonce tag)");
log_info(debug_msg);
}
return 0; // Success
}

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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
// Include nostr_core_lib for cJSON
#include "../nostr_core_lib/cjson/cJSON.h"
// Configuration management system
#include "config.h"
// NIP-40 Expiration configuration structure
struct expiration_config {
int enabled; // 0 = disabled, 1 = enabled
int strict_mode; // 1 = reject expired events on submission
int filter_responses; // 1 = filter expired events from responses
int delete_expired; // 1 = delete expired events from DB (future feature)
long grace_period; // Grace period in seconds for clock skew
};
// Global expiration configuration instance
struct expiration_config g_expiration_config = {
.enabled = 1, // Enable expiration handling by default
.strict_mode = 1, // Reject expired events on submission by default
.filter_responses = 1, // Filter expired events from responses by default
.delete_expired = 0, // Don't delete by default (keep for audit)
.grace_period = 1 // 1 second grace period for testing (was 300)
};
// Forward declarations for logging functions
void log_info(const char* message);
void log_warning(const char* message);
// Initialize expiration configuration using configuration system
void init_expiration_config() {
log_info("Initializing NIP-40 Expiration Timestamp configuration");
// Get all config values first (without holding mutex to avoid deadlock)
int expiration_enabled = get_config_bool("expiration_enabled", 1);
int expiration_strict = get_config_bool("expiration_strict", 1);
int expiration_filter = get_config_bool("expiration_filter", 1);
int expiration_delete = get_config_bool("expiration_delete", 0);
long expiration_grace_period = get_config_int("expiration_grace_period", 1);
// Load expiration settings from configuration system
g_expiration_config.enabled = expiration_enabled;
g_expiration_config.strict_mode = expiration_strict;
g_expiration_config.filter_responses = expiration_filter;
g_expiration_config.delete_expired = expiration_delete;
g_expiration_config.grace_period = expiration_grace_period;
// Validate grace period bounds
if (g_expiration_config.grace_period < 0 || g_expiration_config.grace_period > 86400) {
log_warning("Invalid grace period, using default of 300 seconds");
g_expiration_config.grace_period = 300;
}
// Log final configuration
char config_msg[512];
snprintf(config_msg, sizeof(config_msg),
"Expiration Configuration: enabled=%s, strict_mode=%s, filter_responses=%s, grace_period=%ld seconds",
g_expiration_config.enabled ? "true" : "false",
g_expiration_config.strict_mode ? "true" : "false",
g_expiration_config.filter_responses ? "true" : "false",
g_expiration_config.grace_period);
log_info(config_msg);
}
// Extract expiration timestamp from event tags
long extract_expiration_timestamp(cJSON* tags) {
if (!tags || !cJSON_IsArray(tags)) {
return 0; // No expiration
}
cJSON* tag = NULL;
cJSON_ArrayForEach(tag, tags) {
if (cJSON_IsArray(tag) && cJSON_GetArraySize(tag) >= 2) {
cJSON* tag_name = cJSON_GetArrayItem(tag, 0);
cJSON* tag_value = cJSON_GetArrayItem(tag, 1);
if (cJSON_IsString(tag_name) && cJSON_IsString(tag_value)) {
const char* name = cJSON_GetStringValue(tag_name);
const char* value = cJSON_GetStringValue(tag_value);
if (name && value && strcmp(name, "expiration") == 0) {
// Validate that the string contains only digits (and optional leading whitespace)
const char* p = value;
// Skip leading whitespace
while (*p == ' ' || *p == '\t') p++;
// Check if we have at least one digit
if (*p == '\0') {
continue; // Empty or whitespace-only string, ignore this tag
}
// Validate that all remaining characters are digits
const char* digit_start = p;
while (*p >= '0' && *p <= '9') p++;
// If we didn't consume the entire string or found no digits, it's malformed
if (*p != '\0' || p == digit_start) {
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg),
"Ignoring malformed expiration tag value: '%.32s'", value);
log_warning(debug_msg);
continue; // Ignore malformed expiration tag
}
long expiration_ts = atol(value);
if (expiration_ts > 0) {
return expiration_ts;
}
}
}
}
}
return 0; // No valid expiration tag found
}
// Check if event is currently expired
int is_event_expired(cJSON* event, time_t current_time) {
if (!event) {
return 0; // Invalid event, not expired
}
cJSON* tags = cJSON_GetObjectItem(event, "tags");
long expiration_ts = extract_expiration_timestamp(tags);
if (expiration_ts == 0) {
return 0; // No expiration timestamp, not expired
}
// Check if current time exceeds expiration + grace period
return (current_time > (expiration_ts + g_expiration_config.grace_period));
}
// Validate event expiration according to NIP-40
int validate_event_expiration(cJSON* event, char* error_message, size_t error_size) {
if (!g_expiration_config.enabled) {
return 0; // Expiration validation disabled
}
if (!event) {
snprintf(error_message, error_size, "expiration: null event");
return -1;
}
// Check if event is expired
time_t current_time = time(NULL);
if (is_event_expired(event, current_time)) {
if (g_expiration_config.strict_mode) {
cJSON* tags = cJSON_GetObjectItem(event, "tags");
long expiration_ts = extract_expiration_timestamp(tags);
snprintf(error_message, error_size,
"invalid: event expired (expiration=%ld, current=%ld, grace=%ld)",
expiration_ts, (long)current_time, g_expiration_config.grace_period);
log_warning("Event rejected: expired timestamp");
return -1;
} else {
// In non-strict mode, log but allow expired events
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg),
"Accepting expired event (strict_mode disabled)");
log_info(debug_msg);
}
}
return 0; // Success
}

180
src/nip042.c Normal file
View File

@@ -0,0 +1,180 @@
#define _GNU_SOURCE
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// NIP-42 AUTHENTICATION FUNCTIONS
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
#include <pthread.h>
#include <cjson/cJSON.h>
#include <libwebsockets.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
// Forward declarations for logging functions
void log_error(const char* message);
void log_info(const char* message);
void log_warning(const char* message);
void log_success(const char* message);
// Forward declaration for notice message function
void send_notice_message(struct lws* wsi, const char* message);
// Forward declarations for NIP-42 functions from request_validator.c
int nostr_nip42_generate_challenge(char *challenge_buffer, size_t buffer_size);
int nostr_nip42_verify_auth_event(cJSON *event, const char *challenge_id,
const char *relay_url, int time_tolerance_seconds);
// Forward declaration for per_session_data struct (defined in main.c)
struct per_session_data {
int authenticated;
void* subscriptions; // Head of this session's subscription list
pthread_mutex_t session_lock; // Per-session thread safety
char client_ip[41]; // Client IP for logging
int subscription_count; // Number of subscriptions for this session
// NIP-42 Authentication State
char authenticated_pubkey[65]; // Authenticated public key (64 hex + null)
char active_challenge[65]; // Current challenge for this session (64 hex + null)
time_t challenge_created; // When challenge was created
time_t challenge_expires; // Challenge expiration time
int nip42_auth_required_events; // Whether NIP-42 auth is required for EVENT submission
int nip42_auth_required_subscriptions; // Whether NIP-42 auth is required for REQ operations
int auth_challenge_sent; // Whether challenge has been sent (0/1)
};
// Send NIP-42 authentication challenge to client
void send_nip42_auth_challenge(struct lws* wsi, struct per_session_data* pss) {
if (!wsi || !pss) return;
// Generate challenge using existing request_validator function
char challenge[65];
if (nostr_nip42_generate_challenge(challenge, sizeof(challenge)) != 0) {
log_error("Failed to generate NIP-42 challenge");
send_notice_message(wsi, "Authentication temporarily unavailable");
return;
}
// Store challenge in session
pthread_mutex_lock(&pss->session_lock);
strncpy(pss->active_challenge, challenge, sizeof(pss->active_challenge) - 1);
pss->active_challenge[sizeof(pss->active_challenge) - 1] = '\0';
pss->challenge_created = time(NULL);
pss->challenge_expires = pss->challenge_created + 600; // 10 minutes
pss->auth_challenge_sent = 1;
pthread_mutex_unlock(&pss->session_lock);
// Send AUTH challenge message: ["AUTH", <challenge>]
cJSON* auth_msg = cJSON_CreateArray();
cJSON_AddItemToArray(auth_msg, cJSON_CreateString("AUTH"));
cJSON_AddItemToArray(auth_msg, cJSON_CreateString(challenge));
char* msg_str = cJSON_Print(auth_msg);
if (msg_str) {
size_t msg_len = strlen(msg_str);
unsigned char* buf = malloc(LWS_PRE + msg_len);
if (buf) {
memcpy(buf + LWS_PRE, msg_str, msg_len);
lws_write(wsi, buf + LWS_PRE, msg_len, LWS_WRITE_TEXT);
free(buf);
}
free(msg_str);
}
cJSON_Delete(auth_msg);
char debug_msg[128];
snprintf(debug_msg, sizeof(debug_msg), "NIP-42 auth challenge sent: %.16s...", challenge);
log_info(debug_msg);
}
// Handle NIP-42 signed authentication event from client
void handle_nip42_auth_signed_event(struct lws* wsi, struct per_session_data* pss, cJSON* auth_event) {
if (!wsi || !pss || !auth_event) return;
// Serialize event for validation
char* event_json = cJSON_Print(auth_event);
if (!event_json) {
send_notice_message(wsi, "Invalid authentication event format");
return;
}
pthread_mutex_lock(&pss->session_lock);
char challenge_copy[65];
strncpy(challenge_copy, pss->active_challenge, sizeof(challenge_copy) - 1);
challenge_copy[sizeof(challenge_copy) - 1] = '\0';
time_t challenge_expires = pss->challenge_expires;
pthread_mutex_unlock(&pss->session_lock);
// Check if challenge has expired
time_t current_time = time(NULL);
if (current_time > challenge_expires) {
free(event_json);
send_notice_message(wsi, "Authentication challenge expired, please retry");
log_warning("NIP-42 authentication failed: challenge expired");
return;
}
// Verify authentication using existing request_validator function
// Note: nostr_nip42_verify_auth_event doesn't extract pubkey, we need to do that separately
int result = nostr_nip42_verify_auth_event(auth_event, challenge_copy,
"ws://localhost:8888", 600); // 10 minutes tolerance
char authenticated_pubkey[65] = {0};
if (result == 0) {
// Extract pubkey from the auth event
cJSON* pubkey_json = cJSON_GetObjectItem(auth_event, "pubkey");
if (pubkey_json && cJSON_IsString(pubkey_json)) {
const char* pubkey_str = cJSON_GetStringValue(pubkey_json);
if (pubkey_str && strlen(pubkey_str) == 64) {
strncpy(authenticated_pubkey, pubkey_str, sizeof(authenticated_pubkey) - 1);
authenticated_pubkey[sizeof(authenticated_pubkey) - 1] = '\0';
} else {
result = -1; // Invalid pubkey format
}
} else {
result = -1; // Missing pubkey
}
}
free(event_json);
if (result == 0) {
// Authentication successful
pthread_mutex_lock(&pss->session_lock);
pss->authenticated = 1;
strncpy(pss->authenticated_pubkey, authenticated_pubkey, sizeof(pss->authenticated_pubkey) - 1);
pss->authenticated_pubkey[sizeof(pss->authenticated_pubkey) - 1] = '\0';
// Clear challenge
memset(pss->active_challenge, 0, sizeof(pss->active_challenge));
pss->challenge_expires = 0;
pss->auth_challenge_sent = 0;
pthread_mutex_unlock(&pss->session_lock);
char success_msg[256];
snprintf(success_msg, sizeof(success_msg),
"NIP-42 authentication successful for pubkey: %.16s...", authenticated_pubkey);
log_success(success_msg);
send_notice_message(wsi, "NIP-42 authentication successful");
} else {
// Authentication failed
char error_msg[256];
snprintf(error_msg, sizeof(error_msg),
"NIP-42 authentication failed (error code: %d)", result);
log_warning(error_msg);
send_notice_message(wsi, "NIP-42 authentication failed - invalid signature or challenge");
}
}
// Handle challenge response (not typically used in NIP-42, but included for completeness)
void handle_nip42_auth_challenge_response(struct lws* wsi, struct per_session_data* pss, const char* challenge) {
(void)wsi; (void)pss; (void)challenge; // Mark as intentionally unused
// NIP-42 doesn't typically use challenge responses from client to server
// This is reserved for potential future use or protocol extensions
log_warning("Received unexpected challenge response from client (not part of standard NIP-42 flow)");
send_notice_message(wsi, "Challenge responses are not supported - please send signed authentication event");
}

8
src/request_validator.c
View File

@@ -169,8 +169,8 @@ static void validator_debug_log(const char *message) {
static int reload_auth_config(void);
// Removed unused forward declarations for functions that are no longer called
static int check_database_auth_rules(const char *pubkey, const char *operation,
const char *resource_hash);
int check_database_auth_rules(const char *pubkey, const char *operation,
const char *resource_hash);
void nostr_request_validator_clear_violation(void);
// NIP-42 challenge management functions
@@ -595,8 +595,8 @@ static int reload_auth_config(void) {
* Check database authentication rules for the request
* Implements the 6-step rule evaluation engine from AUTH_API.md
*/
static int check_database_auth_rules(const char *pubkey, const char *operation,
const char *resource_hash) {
int check_database_auth_rules(const char *pubkey, const char *operation,
const char *resource_hash) {
sqlite3 *db = NULL;
sqlite3_stmt *stmt = NULL;
int rc;

723
src/subscriptions.c Normal file
View File

@@ -0,0 +1,723 @@
#define _GNU_SOURCE
#include <cjson/cJSON.h>
#include <sqlite3.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <printf.h>
#include <pthread.h>
#include <libwebsockets.h>
#include "subscriptions.h"
// Forward declarations for logging functions
void log_info(const char* message);
void log_error(const char* message);
void log_warning(const char* message);
// Forward declarations for configuration functions
const char* get_config_value(const char* key);
// Forward declarations for NIP-40 expiration functions
int is_event_expired(cJSON* event, time_t current_time);
// Global database variable
extern sqlite3* g_db;
// Global unified cache
extern unified_config_cache_t g_unified_cache;
// Global subscription manager
extern subscription_manager_t g_subscription_manager;
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// PERSISTENT SUBSCRIPTIONS SYSTEM
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// Create a subscription filter from cJSON filter object
subscription_filter_t* create_subscription_filter(cJSON* filter_json) {
if (!filter_json || !cJSON_IsObject(filter_json)) {
return NULL;
}
subscription_filter_t* filter = calloc(1, sizeof(subscription_filter_t));
if (!filter) {
return NULL;
}
// Copy filter criteria
cJSON* kinds = cJSON_GetObjectItem(filter_json, "kinds");
if (kinds && cJSON_IsArray(kinds)) {
filter->kinds = cJSON_Duplicate(kinds, 1);
}
cJSON* authors = cJSON_GetObjectItem(filter_json, "authors");
if (authors && cJSON_IsArray(authors)) {
filter->authors = cJSON_Duplicate(authors, 1);
}
cJSON* ids = cJSON_GetObjectItem(filter_json, "ids");
if (ids && cJSON_IsArray(ids)) {
filter->ids = cJSON_Duplicate(ids, 1);
}
cJSON* since = cJSON_GetObjectItem(filter_json, "since");
if (since && cJSON_IsNumber(since)) {
filter->since = (long)cJSON_GetNumberValue(since);
}
cJSON* until = cJSON_GetObjectItem(filter_json, "until");
if (until && cJSON_IsNumber(until)) {
filter->until = (long)cJSON_GetNumberValue(until);
}
cJSON* limit = cJSON_GetObjectItem(filter_json, "limit");
if (limit && cJSON_IsNumber(limit)) {
filter->limit = (int)cJSON_GetNumberValue(limit);
}
// Handle tag filters (e.g., {"#e": ["id1"], "#p": ["pubkey1"]})
cJSON* item = NULL;
cJSON_ArrayForEach(item, filter_json) {
if (item->string && strlen(item->string) >= 2 && item->string[0] == '#') {
if (!filter->tag_filters) {
filter->tag_filters = cJSON_CreateObject();
}
if (filter->tag_filters) {
cJSON_AddItemToObject(filter->tag_filters, item->string, cJSON_Duplicate(item, 1));
}
}
}
return filter;
}
// Free a subscription filter
void free_subscription_filter(subscription_filter_t* filter) {
if (!filter) return;
if (filter->kinds) cJSON_Delete(filter->kinds);
if (filter->authors) cJSON_Delete(filter->authors);
if (filter->ids) cJSON_Delete(filter->ids);
if (filter->tag_filters) cJSON_Delete(filter->tag_filters);
if (filter->next) {
free_subscription_filter(filter->next);
}
free(filter);
}
// Create a new subscription
subscription_t* create_subscription(const char* sub_id, struct lws* wsi, cJSON* filters_array, const char* client_ip) {
if (!sub_id || !wsi || !filters_array) {
return NULL;
}
subscription_t* sub = calloc(1, sizeof(subscription_t));
if (!sub) {
return NULL;
}
// Copy subscription ID (truncate if too long)
strncpy(sub->id, sub_id, SUBSCRIPTION_ID_MAX_LENGTH - 1);
sub->id[SUBSCRIPTION_ID_MAX_LENGTH - 1] = '\0';
// Set WebSocket connection
sub->wsi = wsi;
// Set client IP
if (client_ip) {
strncpy(sub->client_ip, client_ip, CLIENT_IP_MAX_LENGTH - 1);
sub->client_ip[CLIENT_IP_MAX_LENGTH - 1] = '\0';
}
// Set timestamps and state
sub->created_at = time(NULL);
sub->events_sent = 0;
sub->active = 1;
// Convert filters array to linked list
subscription_filter_t* filter_tail = NULL;
int filter_count = 0;
if (cJSON_IsArray(filters_array)) {
cJSON* filter_json = NULL;
cJSON_ArrayForEach(filter_json, filters_array) {
if (filter_count >= MAX_FILTERS_PER_SUBSCRIPTION) {
log_warning("Maximum filters per subscription exceeded, ignoring excess filters");
break;
}
subscription_filter_t* filter = create_subscription_filter(filter_json);
if (filter) {
if (!sub->filters) {
sub->filters = filter;
filter_tail = filter;
} else {
filter_tail->next = filter;
filter_tail = filter;
}
filter_count++;
}
}
}
if (filter_count == 0) {
log_error("No valid filters found for subscription");
free(sub);
return NULL;
}
return sub;
}
// Free a subscription
void free_subscription(subscription_t* sub) {
if (!sub) return;
if (sub->filters) {
free_subscription_filter(sub->filters);
}
free(sub);
}
// Add subscription to global manager (thread-safe)
int add_subscription_to_manager(subscription_t* sub) {
if (!sub) return -1;
pthread_mutex_lock(&g_subscription_manager.subscriptions_lock);
// Check global limits
if (g_subscription_manager.total_subscriptions >= g_subscription_manager.max_total_subscriptions) {
pthread_mutex_unlock(&g_subscription_manager.subscriptions_lock);
log_error("Maximum total subscriptions reached");
return -1;
}
// Add to global list
sub->next = g_subscription_manager.active_subscriptions;
g_subscription_manager.active_subscriptions = sub;
g_subscription_manager.total_subscriptions++;
g_subscription_manager.total_created++;
pthread_mutex_unlock(&g_subscription_manager.subscriptions_lock);
// Log subscription creation to database
log_subscription_created(sub);
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Added subscription '%s' (total: %d)",
sub->id, g_subscription_manager.total_subscriptions);
log_info(debug_msg);
return 0;
}
// Remove subscription from global manager (thread-safe)
int remove_subscription_from_manager(const char* sub_id, struct lws* wsi) {
if (!sub_id) return -1;
pthread_mutex_lock(&g_subscription_manager.subscriptions_lock);
subscription_t** current = &g_subscription_manager.active_subscriptions;
while (*current) {
subscription_t* sub = *current;
// Match by ID and WebSocket connection
if (strcmp(sub->id, sub_id) == 0 && (!wsi || sub->wsi == wsi)) {
// Remove from list
*current = sub->next;
g_subscription_manager.total_subscriptions--;
pthread_mutex_unlock(&g_subscription_manager.subscriptions_lock);
// Log subscription closure to database
log_subscription_closed(sub_id, sub->client_ip, "closed");
// Update events sent counter before freeing
update_subscription_events_sent(sub_id, sub->events_sent);
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Removed subscription '%s' (total: %d)",
sub_id, g_subscription_manager.total_subscriptions);
log_info(debug_msg);
free_subscription(sub);
return 0;
}
current = &(sub->next);
}
pthread_mutex_unlock(&g_subscription_manager.subscriptions_lock);
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Subscription '%s' not found for removal", sub_id);
log_warning(debug_msg);
return -1;
}
// Check if an event matches a subscription filter
int event_matches_filter(cJSON* event, subscription_filter_t* filter) {
if (!event || !filter) {
return 0;
}
// Check kinds filter
if (filter->kinds && cJSON_IsArray(filter->kinds)) {
cJSON* event_kind = cJSON_GetObjectItem(event, "kind");
if (!event_kind || !cJSON_IsNumber(event_kind)) {
return 0;
}
int event_kind_val = (int)cJSON_GetNumberValue(event_kind);
int kind_match = 0;
cJSON* kind_item = NULL;
cJSON_ArrayForEach(kind_item, filter->kinds) {
if (cJSON_IsNumber(kind_item) && (int)cJSON_GetNumberValue(kind_item) == event_kind_val) {
kind_match = 1;
break;
}
}
if (!kind_match) {
return 0;
}
}
// Check authors filter
if (filter->authors && cJSON_IsArray(filter->authors)) {
cJSON* event_pubkey = cJSON_GetObjectItem(event, "pubkey");
if (!event_pubkey || !cJSON_IsString(event_pubkey)) {
return 0;
}
const char* event_pubkey_str = cJSON_GetStringValue(event_pubkey);
int author_match = 0;
cJSON* author_item = NULL;
cJSON_ArrayForEach(author_item, filter->authors) {
if (cJSON_IsString(author_item)) {
const char* author_str = cJSON_GetStringValue(author_item);
// Support prefix matching (partial pubkeys)
if (strncmp(event_pubkey_str, author_str, strlen(author_str)) == 0) {
author_match = 1;
break;
}
}
}
if (!author_match) {
return 0;
}
}
// Check IDs filter
if (filter->ids && cJSON_IsArray(filter->ids)) {
cJSON* event_id = cJSON_GetObjectItem(event, "id");
if (!event_id || !cJSON_IsString(event_id)) {
return 0;
}
const char* event_id_str = cJSON_GetStringValue(event_id);
int id_match = 0;
cJSON* id_item = NULL;
cJSON_ArrayForEach(id_item, filter->ids) {
if (cJSON_IsString(id_item)) {
const char* id_str = cJSON_GetStringValue(id_item);
// Support prefix matching (partial IDs)
if (strncmp(event_id_str, id_str, strlen(id_str)) == 0) {
id_match = 1;
break;
}
}
}
if (!id_match) {
return 0;
}
}
// Check since filter
if (filter->since > 0) {
cJSON* event_created_at = cJSON_GetObjectItem(event, "created_at");
if (!event_created_at || !cJSON_IsNumber(event_created_at)) {
return 0;
}
long event_timestamp = (long)cJSON_GetNumberValue(event_created_at);
if (event_timestamp < filter->since) {
return 0;
}
}
// Check until filter
if (filter->until > 0) {
cJSON* event_created_at = cJSON_GetObjectItem(event, "created_at");
if (!event_created_at || !cJSON_IsNumber(event_created_at)) {
return 0;
}
long event_timestamp = (long)cJSON_GetNumberValue(event_created_at);
if (event_timestamp > filter->until) {
return 0;
}
}
// Check tag filters (e.g., #e, #p tags)
if (filter->tag_filters && cJSON_IsObject(filter->tag_filters)) {
cJSON* event_tags = cJSON_GetObjectItem(event, "tags");
if (!event_tags || !cJSON_IsArray(event_tags)) {
return 0; // Event has no tags but filter requires tags
}
// Check each tag filter
cJSON* tag_filter = NULL;
cJSON_ArrayForEach(tag_filter, filter->tag_filters) {
if (!tag_filter->string || strlen(tag_filter->string) < 2 || tag_filter->string[0] != '#') {
continue; // Invalid tag filter
}
const char* tag_name = tag_filter->string + 1; // Skip the '#'
if (!cJSON_IsArray(tag_filter)) {
continue; // Tag filter must be an array
}
int tag_match = 0;
// Search through event tags for matching tag name and value
cJSON* event_tag = NULL;
cJSON_ArrayForEach(event_tag, event_tags) {
if (!cJSON_IsArray(event_tag) || cJSON_GetArraySize(event_tag) < 2) {
continue; // Invalid tag format
}
cJSON* event_tag_name = cJSON_GetArrayItem(event_tag, 0);
cJSON* event_tag_value = cJSON_GetArrayItem(event_tag, 1);
if (!cJSON_IsString(event_tag_name) || !cJSON_IsString(event_tag_value)) {
continue;
}
// Check if tag name matches
if (strcmp(cJSON_GetStringValue(event_tag_name), tag_name) == 0) {
const char* event_tag_value_str = cJSON_GetStringValue(event_tag_value);
// Check if any of the filter values match this tag value
cJSON* filter_value = NULL;
cJSON_ArrayForEach(filter_value, tag_filter) {
if (cJSON_IsString(filter_value)) {
const char* filter_value_str = cJSON_GetStringValue(filter_value);
// Support prefix matching for tag values
if (strncmp(event_tag_value_str, filter_value_str, strlen(filter_value_str)) == 0) {
tag_match = 1;
break;
}
}
}
if (tag_match) {
break;
}
}
}
if (!tag_match) {
return 0; // This tag filter didn't match, so the event doesn't match
}
}
}
return 1; // All filters passed
}
// Check if an event matches any filter in a subscription (filters are OR'd together)
int event_matches_subscription(cJSON* event, subscription_t* subscription) {
if (!event || !subscription || !subscription->filters) {
return 0;
}
subscription_filter_t* filter = subscription->filters;
while (filter) {
if (event_matches_filter(event, filter)) {
return 1; // Match found (OR logic)
}
filter = filter->next;
}
return 0; // No filters matched
}
// Broadcast event to all matching subscriptions (thread-safe)
int broadcast_event_to_subscriptions(cJSON* event) {
if (!event) {
return 0;
}
// Check if event is expired and should not be broadcast (NIP-40)
pthread_mutex_lock(&g_unified_cache.cache_lock);
int expiration_enabled = g_unified_cache.expiration_config.enabled;
int filter_responses = g_unified_cache.expiration_config.filter_responses;
pthread_mutex_unlock(&g_unified_cache.cache_lock);
if (expiration_enabled && filter_responses) {
time_t current_time = time(NULL);
if (is_event_expired(event, current_time)) {
char debug_msg[256];
cJSON* event_id_obj = cJSON_GetObjectItem(event, "id");
const char* event_id = event_id_obj ? cJSON_GetStringValue(event_id_obj) : "unknown";
snprintf(debug_msg, sizeof(debug_msg), "Skipping broadcast of expired event: %.16s", event_id);
log_info(debug_msg);
return 0; // Don't broadcast expired events
}
}
int broadcasts = 0;
pthread_mutex_lock(&g_subscription_manager.subscriptions_lock);
subscription_t* sub = g_subscription_manager.active_subscriptions;
while (sub) {
if (sub->active && event_matches_subscription(event, sub)) {
// Create EVENT message for this subscription
cJSON* event_msg = cJSON_CreateArray();
cJSON_AddItemToArray(event_msg, cJSON_CreateString("EVENT"));
cJSON_AddItemToArray(event_msg, cJSON_CreateString(sub->id));
cJSON_AddItemToArray(event_msg, cJSON_Duplicate(event, 1));
char* msg_str = cJSON_Print(event_msg);
if (msg_str) {
size_t msg_len = strlen(msg_str);
unsigned char* buf = malloc(LWS_PRE + msg_len);
if (buf) {
memcpy(buf + LWS_PRE, msg_str, msg_len);
// Send to WebSocket connection
int write_result = lws_write(sub->wsi, buf + LWS_PRE, msg_len, LWS_WRITE_TEXT);
if (write_result >= 0) {
sub->events_sent++;
broadcasts++;
// Log event broadcast to database (optional - can be disabled for performance)
cJSON* event_id_obj = cJSON_GetObjectItem(event, "id");
if (event_id_obj && cJSON_IsString(event_id_obj)) {
log_event_broadcast(cJSON_GetStringValue(event_id_obj), sub->id, sub->client_ip);
}
}
free(buf);
}
free(msg_str);
}
cJSON_Delete(event_msg);
}
sub = sub->next;
}
// Update global statistics
g_subscription_manager.total_events_broadcast += broadcasts;
pthread_mutex_unlock(&g_subscription_manager.subscriptions_lock);
if (broadcasts > 0) {
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Broadcasted event to %d subscriptions", broadcasts);
log_info(debug_msg);
}
return broadcasts;
}
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// SUBSCRIPTION DATABASE LOGGING
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// Log subscription creation to database
void log_subscription_created(const subscription_t* sub) {
if (!g_db || !sub) return;
// Create filter JSON for logging
char* filter_json = NULL;
if (sub->filters) {
cJSON* filters_array = cJSON_CreateArray();
subscription_filter_t* filter = sub->filters;
while (filter) {
cJSON* filter_obj = cJSON_CreateObject();
if (filter->kinds) {
cJSON_AddItemToObject(filter_obj, "kinds", cJSON_Duplicate(filter->kinds, 1));
}
if (filter->authors) {
cJSON_AddItemToObject(filter_obj, "authors", cJSON_Duplicate(filter->authors, 1));
}
if (filter->ids) {
cJSON_AddItemToObject(filter_obj, "ids", cJSON_Duplicate(filter->ids, 1));
}
if (filter->since > 0) {
cJSON_AddNumberToObject(filter_obj, "since", filter->since);
}
if (filter->until > 0) {
cJSON_AddNumberToObject(filter_obj, "until", filter->until);
}
if (filter->limit > 0) {
cJSON_AddNumberToObject(filter_obj, "limit", filter->limit);
}
if (filter->tag_filters) {
cJSON* tags_obj = cJSON_Duplicate(filter->tag_filters, 1);
cJSON* item = NULL;
cJSON_ArrayForEach(item, tags_obj) {
if (item->string) {
cJSON_AddItemToObject(filter_obj, item->string, cJSON_Duplicate(item, 1));
}
}
cJSON_Delete(tags_obj);
}
cJSON_AddItemToArray(filters_array, filter_obj);
filter = filter->next;
}
filter_json = cJSON_Print(filters_array);
cJSON_Delete(filters_array);
}
const char* sql =
"INSERT INTO subscription_events (subscription_id, client_ip, event_type, filter_json) "
"VALUES (?, ?, 'created', ?)";
sqlite3_stmt* stmt;
int rc = sqlite3_prepare_v2(g_db, sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, sub->id, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 2, sub->client_ip, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 3, filter_json ? filter_json : "[]", -1, SQLITE_TRANSIENT);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
if (filter_json) free(filter_json);
}
// Log subscription closure to database
void log_subscription_closed(const char* sub_id, const char* client_ip, const char* reason) {
(void)reason; // Mark as intentionally unused
if (!g_db || !sub_id) return;
const char* sql =
"INSERT INTO subscription_events (subscription_id, client_ip, event_type) "
"VALUES (?, ?, 'closed')";
sqlite3_stmt* stmt;
int rc = sqlite3_prepare_v2(g_db, sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, sub_id, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 2, client_ip ? client_ip : "unknown", -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
// Update the corresponding 'created' entry with end time and events sent
const char* update_sql =
"UPDATE subscription_events "
"SET ended_at = strftime('%s', 'now') "
"WHERE subscription_id = ? AND event_type = 'created' AND ended_at IS NULL";
rc = sqlite3_prepare_v2(g_db, update_sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, sub_id, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
}
// Log subscription disconnection to database
void log_subscription_disconnected(const char* client_ip) {
if (!g_db || !client_ip) return;
// Mark all active subscriptions for this client as disconnected
const char* sql =
"UPDATE subscription_events "
"SET ended_at = strftime('%s', 'now') "
"WHERE client_ip = ? AND event_type = 'created' AND ended_at IS NULL";
sqlite3_stmt* stmt;
int rc = sqlite3_prepare_v2(g_db, sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, client_ip, -1, SQLITE_STATIC);
int changes = sqlite3_changes(g_db);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
if (changes > 0) {
// Log a disconnection event
const char* insert_sql =
"INSERT INTO subscription_events (subscription_id, client_ip, event_type) "
"VALUES ('disconnect', ?, 'disconnected')";
rc = sqlite3_prepare_v2(g_db, insert_sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, client_ip, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
}
}
}
// Log event broadcast to database (optional, can be resource intensive)
void log_event_broadcast(const char* event_id, const char* sub_id, const char* client_ip) {
if (!g_db || !event_id || !sub_id || !client_ip) return;
const char* sql =
"INSERT INTO event_broadcasts (event_id, subscription_id, client_ip) "
"VALUES (?, ?, ?)";
sqlite3_stmt* stmt;
int rc = sqlite3_prepare_v2(g_db, sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_text(stmt, 1, event_id, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 2, sub_id, -1, SQLITE_STATIC);
sqlite3_bind_text(stmt, 3, client_ip, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
}
// Update events sent counter for a subscription
void update_subscription_events_sent(const char* sub_id, int events_sent) {
if (!g_db || !sub_id) return;
const char* sql =
"UPDATE subscription_events "
"SET events_sent = ? "
"WHERE subscription_id = ? AND event_type = 'created'";
sqlite3_stmt* stmt;
int rc = sqlite3_prepare_v2(g_db, sql, -1, &stmt, NULL);
if (rc == SQLITE_OK) {
sqlite3_bind_int(stmt, 1, events_sent);
sqlite3_bind_text(stmt, 2, sub_id, -1, SQLITE_STATIC);
sqlite3_step(stmt);
sqlite3_finalize(stmt);
}
}

91
src/subscriptions.h Normal file
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// Subscription system structures and functions for C-Relay
// This header defines subscription management functionality
#ifndef SUBSCRIPTIONS_H
#define SUBSCRIPTIONS_H
#include <pthread.h>
#include <time.h>
#include <stdint.h>
#include "../nostr_core_lib/cjson/cJSON.h"
#include "config.h" // For CLIENT_IP_MAX_LENGTH
// Forward declaration for libwebsockets struct
struct lws;
// Constants
#define SUBSCRIPTION_ID_MAX_LENGTH 64
#define MAX_FILTERS_PER_SUBSCRIPTION 10
#define MAX_TOTAL_SUBSCRIPTIONS 5000
// Forward declarations for typedefs
typedef struct subscription_filter subscription_filter_t;
typedef struct subscription subscription_t;
typedef struct subscription_manager subscription_manager_t;
// Subscription filter structure
struct subscription_filter {
// Filter criteria (all optional)
cJSON* kinds; // Array of event kinds [1,2,3]
cJSON* authors; // Array of author pubkeys
cJSON* ids; // Array of event IDs
long since; // Unix timestamp (0 = not set)
long until; // Unix timestamp (0 = not set)
int limit; // Result limit (0 = no limit)
cJSON* tag_filters; // Object with tag filters: {"#e": ["id1"], "#p": ["pubkey1"]}
// Linked list for multiple filters per subscription
struct subscription_filter* next;
};
// Active subscription structure
struct subscription {
char id[SUBSCRIPTION_ID_MAX_LENGTH]; // Subscription ID
struct lws* wsi; // WebSocket connection handle
subscription_filter_t* filters; // Linked list of filters (OR'd together)
time_t created_at; // When subscription was created
int events_sent; // Counter for sent events
int active; // 1 = active, 0 = closed
// Client info for logging
char client_ip[CLIENT_IP_MAX_LENGTH]; // Client IP address
// Linked list pointers
struct subscription* next; // Next subscription globally
struct subscription* session_next; // Next subscription for this session
};
// Global subscription manager
struct subscription_manager {
subscription_t* active_subscriptions; // Head of global subscription list
pthread_mutex_t subscriptions_lock; // Global thread safety
int total_subscriptions; // Current count
// Configuration
int max_subscriptions_per_client; // Default: 20
int max_total_subscriptions; // Default: 5000
// Statistics
uint64_t total_created; // Lifetime subscription count
uint64_t total_events_broadcast; // Lifetime event broadcast count
};
// Function declarations
subscription_filter_t* create_subscription_filter(cJSON* filter_json);
void free_subscription_filter(subscription_filter_t* filter);
subscription_t* create_subscription(const char* sub_id, struct lws* wsi, cJSON* filters_array, const char* client_ip);
void free_subscription(subscription_t* sub);
int add_subscription_to_manager(subscription_t* sub);
int remove_subscription_from_manager(const char* sub_id, struct lws* wsi);
int event_matches_filter(cJSON* event, subscription_filter_t* filter);
int event_matches_subscription(cJSON* event, subscription_t* subscription);
int broadcast_event_to_subscriptions(cJSON* event);
// Database logging functions
void log_subscription_created(const subscription_t* sub);
void log_subscription_closed(const char* sub_id, const char* client_ip, const char* reason);
void log_subscription_disconnected(const char* client_ip);
void log_event_broadcast(const char* event_id, const char* sub_id, const char* client_ip);
void update_subscription_events_sent(const char* sub_id, int events_sent);
#endif // SUBSCRIPTIONS_H

901
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// Define _GNU_SOURCE to ensure all POSIX features are available
#define _GNU_SOURCE
// Includes
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <time.h>
#include <pthread.h>
#include <sqlite3.h>
// Include libwebsockets after pthread.h to ensure pthread_rwlock_t is defined
#include <libwebsockets.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
// Include nostr_core_lib for Nostr functionality
#include "../nostr_core_lib/cjson/cJSON.h"
#include "../nostr_core_lib/nostr_core/nostr_core.h"
#include "../nostr_core_lib/nostr_core/nip013.h" // NIP-13: Proof of Work
#include "config.h" // Configuration management system
#include "sql_schema.h" // Embedded database schema
#include "websockets.h" // WebSocket structures and constants
#include "subscriptions.h" // Subscription structures and functions
// Forward declarations for logging functions
void log_info(const char* message);
void log_success(const char* message);
void log_error(const char* message);
void log_warning(const char* message);
// Forward declarations for configuration functions
const char* get_config_value(const char* key);
int get_config_int(const char* key, int default_value);
int get_config_bool(const char* key, int default_value);
// Forward declarations for NIP-42 authentication functions
int is_nip42_auth_globally_required(void);
int is_nip42_auth_required_for_kind(int kind);
void send_nip42_auth_challenge(struct lws* wsi, struct per_session_data* pss);
void handle_nip42_auth_signed_event(struct lws* wsi, struct per_session_data* pss, cJSON* auth_event);
void handle_nip42_auth_challenge_response(struct lws* wsi, struct per_session_data* pss, const char* challenge);
// Forward declarations for NIP-11 relay information handling
int handle_nip11_http_request(struct lws* wsi, const char* accept_header);
// Forward declarations for database functions
int store_event(cJSON* event);
// Forward declarations for subscription management
int broadcast_event_to_subscriptions(cJSON* event);
int add_subscription_to_manager(struct subscription* sub);
int remove_subscription_from_manager(const char* sub_id, struct lws* wsi);
// Forward declarations for event handling
int handle_event_message(cJSON* event, char* error_message, size_t error_size);
int nostr_validate_unified_request(const char* json_string, size_t json_length);
// Forward declarations for admin event processing
int process_admin_event_in_config(cJSON* event, char* error_message, size_t error_size, struct lws* wsi);
int is_authorized_admin_event(cJSON* event, char* error_message, size_t error_size);
// Forward declarations for NIP-09 deletion request handling
int handle_deletion_request(cJSON* event, char* error_message, size_t error_size);
// Forward declarations for NIP-13 PoW handling
int validate_event_pow(cJSON* event, char* error_message, size_t error_size);
// Forward declarations for NIP-40 expiration handling
int is_event_expired(cJSON* event, time_t current_time);
// Forward declarations for subscription handling
int handle_req_message(const char* sub_id, cJSON* filters, struct lws *wsi, struct per_session_data *pss);
// Forward declarations for NOTICE message support
void send_notice_message(struct lws* wsi, const char* message);
// Forward declarations for unified cache access
extern unified_config_cache_t g_unified_cache;
// Forward declarations for global state
extern sqlite3* g_db;
extern int g_server_running;
extern struct lws_context *ws_context;
// Global subscription manager
struct subscription_manager g_subscription_manager;
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// WEBSOCKET PROTOCOL
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// WebSocket callback function for Nostr relay protocol
static int nostr_relay_callback(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len) {
struct per_session_data *pss = (struct per_session_data *)user;
switch (reason) {
case LWS_CALLBACK_HTTP:
// Handle NIP-11 relay information requests (HTTP GET to root path)
{
char *requested_uri = (char *)in;
log_info("HTTP request received");
// Check if this is a GET request to the root path
if (strcmp(requested_uri, "/") == 0) {
// Get Accept header
char accept_header[256] = {0};
int header_len = lws_hdr_copy(wsi, accept_header, sizeof(accept_header) - 1, WSI_TOKEN_HTTP_ACCEPT);
if (header_len > 0) {
accept_header[header_len] = '\0';
// Handle NIP-11 request
if (handle_nip11_http_request(wsi, accept_header) == 0) {
return 0; // Successfully handled
}
} else {
log_warning("HTTP request without Accept header");
}
// Return 404 for other requests
lws_return_http_status(wsi, HTTP_STATUS_NOT_FOUND, NULL);
return -1;
}
// Return 404 for non-root paths
lws_return_http_status(wsi, HTTP_STATUS_NOT_FOUND, NULL);
return -1;
}
case LWS_CALLBACK_HTTP_WRITEABLE:
// Handle NIP-11 HTTP body transmission with proper buffer management
{
struct nip11_session_data* session_data = (struct nip11_session_data*)lws_wsi_user(wsi);
if (session_data && session_data->headers_sent && !session_data->body_sent) {
// Allocate buffer for JSON body transmission
unsigned char *json_buf = malloc(LWS_PRE + session_data->json_length);
if (!json_buf) {
log_error("Failed to allocate buffer for NIP-11 body transmission");
// Clean up session data
free(session_data->json_buffer);
free(session_data);
lws_set_wsi_user(wsi, NULL);
return -1;
}
// Copy JSON data to buffer
memcpy(json_buf + LWS_PRE, session_data->json_buffer, session_data->json_length);
// Write JSON body
int write_result = lws_write(wsi, json_buf + LWS_PRE, session_data->json_length, LWS_WRITE_HTTP);
// Free the transmission buffer immediately (it's been copied by libwebsockets)
free(json_buf);
if (write_result < 0) {
log_error("Failed to write NIP-11 JSON body");
// Clean up session data
free(session_data->json_buffer);
free(session_data);
lws_set_wsi_user(wsi, NULL);
return -1;
}
// Mark body as sent and clean up session data
session_data->body_sent = 1;
free(session_data->json_buffer);
free(session_data);
lws_set_wsi_user(wsi, NULL);
log_success("NIP-11 relay information served successfully");
return 0; // Close connection after successful transmission
}
}
break;
case LWS_CALLBACK_ESTABLISHED:
log_info("WebSocket connection established");
memset(pss, 0, sizeof(*pss));
pthread_mutex_init(&pss->session_lock, NULL);
// Get real client IP address
char client_ip[CLIENT_IP_MAX_LENGTH];
lws_get_peer_simple(wsi, client_ip, sizeof(client_ip));
// Ensure client_ip is null-terminated and copy safely
client_ip[CLIENT_IP_MAX_LENGTH - 1] = '\0';
size_t ip_len = strlen(client_ip);
size_t copy_len = (ip_len < CLIENT_IP_MAX_LENGTH - 1) ? ip_len : CLIENT_IP_MAX_LENGTH - 1;
memcpy(pss->client_ip, client_ip, copy_len);
pss->client_ip[copy_len] = '\0';
// Initialize NIP-42 authentication state
pss->authenticated = 0;
pss->nip42_auth_required_events = get_config_bool("nip42_auth_required_events", 0);
pss->nip42_auth_required_subscriptions = get_config_bool("nip42_auth_required_subscriptions", 0);
pss->auth_challenge_sent = 0;
memset(pss->authenticated_pubkey, 0, sizeof(pss->authenticated_pubkey));
memset(pss->active_challenge, 0, sizeof(pss->active_challenge));
pss->challenge_created = 0;
pss->challenge_expires = 0;
break;
case LWS_CALLBACK_RECEIVE:
if (len > 0) {
char *message = malloc(len + 1);
if (message) {
memcpy(message, in, len);
message[len] = '\0';
// Parse JSON message (this is the normal program flow)
cJSON* json = cJSON_Parse(message);
if (json && cJSON_IsArray(json)) {
// Log the complete parsed JSON message once
char* complete_message = cJSON_Print(json);
if (complete_message) {
char debug_msg[2048];
snprintf(debug_msg, sizeof(debug_msg),
"Received complete WebSocket message: %s", complete_message);
log_info(debug_msg);
free(complete_message);
}
// Get message type
cJSON* type = cJSON_GetArrayItem(json, 0);
if (type && cJSON_IsString(type)) {
const char* msg_type = cJSON_GetStringValue(type);
if (strcmp(msg_type, "EVENT") == 0) {
// Extract event for kind-specific NIP-42 authentication check
cJSON* event_obj = cJSON_GetArrayItem(json, 1);
if (event_obj && cJSON_IsObject(event_obj)) {
// Extract event kind for kind-specific NIP-42 authentication check
cJSON* kind_obj = cJSON_GetObjectItem(event_obj, "kind");
int event_kind = kind_obj && cJSON_IsNumber(kind_obj) ? (int)cJSON_GetNumberValue(kind_obj) : -1;
// Extract pubkey and event ID for debugging
cJSON* pubkey_obj = cJSON_GetObjectItem(event_obj, "pubkey");
cJSON* id_obj = cJSON_GetObjectItem(event_obj, "id");
const char* event_pubkey = pubkey_obj ? cJSON_GetStringValue(pubkey_obj) : "unknown";
const char* event_id = id_obj ? cJSON_GetStringValue(id_obj) : "unknown";
char debug_event_msg[512];
snprintf(debug_event_msg, sizeof(debug_event_msg),
"DEBUG EVENT: Processing kind %d event from pubkey %.16s... ID %.16s...",
event_kind, event_pubkey, event_id);
log_info(debug_event_msg);
// Check if NIP-42 authentication is required for this event kind or globally
int auth_required = is_nip42_auth_globally_required() || is_nip42_auth_required_for_kind(event_kind);
char debug_auth_msg[256];
snprintf(debug_auth_msg, sizeof(debug_auth_msg),
"DEBUG AUTH: auth_required=%d, pss->authenticated=%d, event_kind=%d",
auth_required, pss ? pss->authenticated : -1, event_kind);
log_info(debug_auth_msg);
if (pss && auth_required && !pss->authenticated) {
if (!pss->auth_challenge_sent) {
log_info("DEBUG AUTH: Sending NIP-42 authentication challenge");
send_nip42_auth_challenge(wsi, pss);
} else {
char auth_msg[256];
if (event_kind == 4 || event_kind == 14) {
snprintf(auth_msg, sizeof(auth_msg),
"NIP-42 authentication required for direct message events (kind %d)", event_kind);
} else {
snprintf(auth_msg, sizeof(auth_msg),
"NIP-42 authentication required for event kind %d", event_kind);
}
send_notice_message(wsi, auth_msg);
log_warning("Event rejected: NIP-42 authentication required for kind");
char debug_msg[128];
snprintf(debug_msg, sizeof(debug_msg), "Auth required for kind %d", event_kind);
log_info(debug_msg);
}
cJSON_Delete(json);
free(message);
return 0;
}
// Check blacklist/whitelist rules regardless of NIP-42 auth settings
// Blacklist should always be enforced
if (event_pubkey) {
// Forward declaration for auth rules checking function
extern int check_database_auth_rules(const char *pubkey, const char *operation, const char *resource_hash);
int auth_rules_result = check_database_auth_rules(event_pubkey, "event", NULL);
if (auth_rules_result != 0) { // 0 = NOSTR_SUCCESS, non-zero = blocked
char auth_rules_msg[256];
if (auth_rules_result == -101) { // NOSTR_ERROR_AUTH_REQUIRED
snprintf(auth_rules_msg, sizeof(auth_rules_msg),
"blocked: pubkey not authorized (blacklist/whitelist violation)");
} else {
snprintf(auth_rules_msg, sizeof(auth_rules_msg),
"blocked: authorization check failed (error %d)", auth_rules_result);
}
send_notice_message(wsi, auth_rules_msg);
log_warning("Event rejected: blacklist/whitelist violation");
// Send OK response with false status
cJSON* response = cJSON_CreateArray();
cJSON_AddItemToArray(response, cJSON_CreateString("OK"));
cJSON_AddItemToArray(response, cJSON_CreateString(event_id));
cJSON_AddItemToArray(response, cJSON_CreateBool(0)); // false = rejected
cJSON_AddItemToArray(response, cJSON_CreateString(auth_rules_msg));
char *response_str = cJSON_Print(response);
if (response_str) {
size_t response_len = strlen(response_str);
unsigned char *buf = malloc(LWS_PRE + response_len);
if (buf) {
memcpy(buf + LWS_PRE, response_str, response_len);
lws_write(wsi, buf + LWS_PRE, response_len, LWS_WRITE_TEXT);
free(buf);
}
free(response_str);
}
cJSON_Delete(response);
cJSON_Delete(json);
free(message);
return 0;
}
}
}
// Handle EVENT message
cJSON* event = cJSON_GetArrayItem(json, 1);
if (event && cJSON_IsObject(event)) {
// Extract event JSON string for unified validator
char *event_json_str = cJSON_Print(event);
if (!event_json_str) {
log_error("Failed to serialize event JSON for validation");
cJSON* error_response = cJSON_CreateArray();
cJSON_AddItemToArray(error_response, cJSON_CreateString("OK"));
cJSON_AddItemToArray(error_response, cJSON_CreateString("unknown"));
cJSON_AddItemToArray(error_response, cJSON_CreateBool(0));
cJSON_AddItemToArray(error_response, cJSON_CreateString("error: failed to process event"));
char *error_str = cJSON_Print(error_response);
if (error_str) {
size_t error_len = strlen(error_str);
unsigned char *buf = malloc(LWS_PRE + error_len);
if (buf) {
memcpy(buf + LWS_PRE, error_str, error_len);
lws_write(wsi, buf + LWS_PRE, error_len, LWS_WRITE_TEXT);
free(buf);
}
free(error_str);
}
cJSON_Delete(error_response);
return 0;
}
log_info("DEBUG VALIDATION: Starting unified validator");
// Call unified validator with JSON string
size_t event_json_len = strlen(event_json_str);
int validation_result = nostr_validate_unified_request(event_json_str, event_json_len);
// Map validation result to old result format (0 = success, -1 = failure)
int result = (validation_result == NOSTR_SUCCESS) ? 0 : -1;
char debug_validation_msg[256];
snprintf(debug_validation_msg, sizeof(debug_validation_msg),
"DEBUG VALIDATION: validation_result=%d, result=%d", validation_result, result);
log_info(debug_validation_msg);
// Generate error message based on validation result
char error_message[512] = {0};
if (result != 0) {
switch (validation_result) {
case NOSTR_ERROR_INVALID_INPUT:
strncpy(error_message, "invalid: malformed event structure", sizeof(error_message) - 1);
break;
case NOSTR_ERROR_EVENT_INVALID_SIGNATURE:
strncpy(error_message, "invalid: signature verification failed", sizeof(error_message) - 1);
break;
case NOSTR_ERROR_EVENT_INVALID_ID:
strncpy(error_message, "invalid: event id verification failed", sizeof(error_message) - 1);
break;
case NOSTR_ERROR_EVENT_INVALID_PUBKEY:
strncpy(error_message, "invalid: invalid pubkey format", sizeof(error_message) - 1);
break;
case -103: // NOSTR_ERROR_EVENT_EXPIRED
strncpy(error_message, "rejected: event expired", sizeof(error_message) - 1);
break;
case -102: // NOSTR_ERROR_NIP42_DISABLED
strncpy(error_message, "auth-required: NIP-42 authentication required", sizeof(error_message) - 1);
break;
case -101: // NOSTR_ERROR_AUTH_REQUIRED
strncpy(error_message, "blocked: pubkey not authorized", sizeof(error_message) - 1);
break;
default:
strncpy(error_message, "error: validation failed", sizeof(error_message) - 1);
break;
}
char debug_error_msg[256];
snprintf(debug_error_msg, sizeof(debug_error_msg),
"DEBUG VALIDATION ERROR: %s", error_message);
log_warning(debug_error_msg);
} else {
log_info("DEBUG VALIDATION: Event validated successfully using unified validator");
}
// Cleanup event JSON string
free(event_json_str);
// Check for admin events (kind 23456) and intercept them
if (result == 0) {
cJSON* kind_obj = cJSON_GetObjectItem(event, "kind");
if (kind_obj && cJSON_IsNumber(kind_obj)) {
int event_kind = (int)cJSON_GetNumberValue(kind_obj);
log_info("DEBUG ADMIN: Checking if admin event processing is needed");
// Log reception of Kind 23456 events
if (event_kind == 23456) {
char* event_json_debug = cJSON_Print(event);
char debug_received_msg[1024];
snprintf(debug_received_msg, sizeof(debug_received_msg),
"RECEIVED Kind %d event: %s", event_kind,
event_json_debug ? event_json_debug : "Failed to serialize");
log_info(debug_received_msg);
if (event_json_debug) {
free(event_json_debug);
}
}
if (event_kind == 23456) {
// Enhanced admin event security - check authorization first
log_info("DEBUG ADMIN: Admin event detected, checking authorization");
char auth_error[512] = {0};
int auth_result = is_authorized_admin_event(event, auth_error, sizeof(auth_error));
if (auth_result != 0) {
// Authorization failed - log and reject
log_warning("DEBUG ADMIN: Admin event authorization failed");
result = -1;
size_t error_len = strlen(auth_error);
size_t copy_len = (error_len < sizeof(error_message) - 1) ? error_len : sizeof(error_message) - 1;
memcpy(error_message, auth_error, copy_len);
error_message[copy_len] = '\0';
char debug_auth_error_msg[600];
snprintf(debug_auth_error_msg, sizeof(debug_auth_error_msg),
"DEBUG ADMIN AUTH ERROR: %.400s", auth_error);
log_warning(debug_auth_error_msg);
} else {
// Authorization successful - process through admin API
log_info("DEBUG ADMIN: Admin event authorized, processing through admin API");
char admin_error[512] = {0};
int admin_result = process_admin_event_in_config(event, admin_error, sizeof(admin_error), wsi);
char debug_admin_msg[256];
snprintf(debug_admin_msg, sizeof(debug_admin_msg),
"DEBUG ADMIN: process_admin_event_in_config returned %d", admin_result);
log_info(debug_admin_msg);
// Log results for Kind 23456 events
if (event_kind == 23456) {
if (admin_result == 0) {
char success_result_msg[256];
snprintf(success_result_msg, sizeof(success_result_msg),
"SUCCESS: Kind %d event processed successfully", event_kind);
log_success(success_result_msg);
} else {
char error_result_msg[512];
snprintf(error_result_msg, sizeof(error_result_msg),
"ERROR: Kind %d event processing failed: %s", event_kind, admin_error);
log_error(error_result_msg);
}
}
if (admin_result != 0) {
log_error("DEBUG ADMIN: Failed to process admin event through admin API");
result = -1;
size_t error_len = strlen(admin_error);
size_t copy_len = (error_len < sizeof(error_message) - 1) ? error_len : sizeof(error_message) - 1;
memcpy(error_message, admin_error, copy_len);
error_message[copy_len] = '\0';
char debug_admin_error_msg[600];
snprintf(debug_admin_error_msg, sizeof(debug_admin_error_msg),
"DEBUG ADMIN ERROR: %.400s", admin_error);
log_error(debug_admin_error_msg);
} else {
log_success("DEBUG ADMIN: Admin event processed successfully through admin API");
// Admin events are processed by the admin API, not broadcast to subscriptions
}
}
} else {
// Regular event - store in database and broadcast
log_info("DEBUG STORAGE: Regular event - storing in database");
if (store_event(event) != 0) {
log_error("DEBUG STORAGE: Failed to store event in database");
result = -1;
strncpy(error_message, "error: failed to store event", sizeof(error_message) - 1);
} else {
log_info("DEBUG STORAGE: Event stored successfully in database");
// Broadcast event to matching persistent subscriptions
int broadcast_count = broadcast_event_to_subscriptions(event);
char debug_broadcast_msg[128];
snprintf(debug_broadcast_msg, sizeof(debug_broadcast_msg),
"DEBUG BROADCAST: Event broadcast to %d subscriptions", broadcast_count);
log_info(debug_broadcast_msg);
}
}
} else {
// Event without valid kind - try normal storage
log_warning("DEBUG STORAGE: Event without valid kind - trying normal storage");
if (store_event(event) != 0) {
log_error("DEBUG STORAGE: Failed to store event without kind in database");
result = -1;
strncpy(error_message, "error: failed to store event", sizeof(error_message) - 1);
} else {
log_info("DEBUG STORAGE: Event without kind stored successfully in database");
broadcast_event_to_subscriptions(event);
}
}
}
// Send OK response
cJSON* event_id = cJSON_GetObjectItem(event, "id");
if (event_id && cJSON_IsString(event_id)) {
cJSON* response = cJSON_CreateArray();
cJSON_AddItemToArray(response, cJSON_CreateString("OK"));
cJSON_AddItemToArray(response, cJSON_CreateString(cJSON_GetStringValue(event_id)));
cJSON_AddItemToArray(response, cJSON_CreateBool(result == 0));
cJSON_AddItemToArray(response, cJSON_CreateString(strlen(error_message) > 0 ? error_message : ""));
// TODO: REPLACE - Remove wasteful cJSON_Print conversion
char *response_str = cJSON_Print(response);
if (response_str) {
char debug_response_msg[512];
snprintf(debug_response_msg, sizeof(debug_response_msg),
"DEBUG RESPONSE: Sending OK response: %s", response_str);
log_info(debug_response_msg);
size_t response_len = strlen(response_str);
unsigned char *buf = malloc(LWS_PRE + response_len);
if (buf) {
memcpy(buf + LWS_PRE, response_str, response_len);
int write_result = lws_write(wsi, buf + LWS_PRE, response_len, LWS_WRITE_TEXT);
char debug_write_msg[128];
snprintf(debug_write_msg, sizeof(debug_write_msg),
"DEBUG RESPONSE: lws_write returned %d", write_result);
log_info(debug_write_msg);
free(buf);
}
free(response_str);
}
cJSON_Delete(response);
}
}
} else if (strcmp(msg_type, "REQ") == 0) {
// Check NIP-42 authentication for REQ subscriptions if required
if (pss && pss->nip42_auth_required_subscriptions && !pss->authenticated) {
if (!pss->auth_challenge_sent) {
send_nip42_auth_challenge(wsi, pss);
} else {
send_notice_message(wsi, "NIP-42 authentication required for subscriptions");
log_warning("REQ rejected: NIP-42 authentication required");
}
cJSON_Delete(json);
free(message);
return 0;
}
// Handle REQ message
cJSON* sub_id = cJSON_GetArrayItem(json, 1);
if (sub_id && cJSON_IsString(sub_id)) {
const char* subscription_id = cJSON_GetStringValue(sub_id);
// Create array of filter objects from position 2 onwards
cJSON* filters = cJSON_CreateArray();
int json_size = cJSON_GetArraySize(json);
for (int i = 2; i < json_size; i++) {
cJSON* filter = cJSON_GetArrayItem(json, i);
if (filter) {
cJSON_AddItemToArray(filters, cJSON_Duplicate(filter, 1));
}
}
handle_req_message(subscription_id, filters, wsi, pss);
// Clean up the filters array we created
cJSON_Delete(filters);
// Send EOSE (End of Stored Events)
cJSON* eose_response = cJSON_CreateArray();
cJSON_AddItemToArray(eose_response, cJSON_CreateString("EOSE"));
cJSON_AddItemToArray(eose_response, cJSON_CreateString(subscription_id));
char *eose_str = cJSON_Print(eose_response);
if (eose_str) {
size_t eose_len = strlen(eose_str);
unsigned char *buf = malloc(LWS_PRE + eose_len);
if (buf) {
memcpy(buf + LWS_PRE, eose_str, eose_len);
lws_write(wsi, buf + LWS_PRE, eose_len, LWS_WRITE_TEXT);
free(buf);
}
free(eose_str);
}
cJSON_Delete(eose_response);
}
} else if (strcmp(msg_type, "CLOSE") == 0) {
// Handle CLOSE message
cJSON* sub_id = cJSON_GetArrayItem(json, 1);
if (sub_id && cJSON_IsString(sub_id)) {
const char* subscription_id = cJSON_GetStringValue(sub_id);
// Remove from global manager
remove_subscription_from_manager(subscription_id, wsi);
// Remove from session list if present
if (pss) {
pthread_mutex_lock(&pss->session_lock);
struct subscription** current = &pss->subscriptions;
while (*current) {
if (strcmp((*current)->id, subscription_id) == 0) {
struct subscription* to_remove = *current;
*current = to_remove->session_next;
pss->subscription_count--;
break;
}
current = &((*current)->session_next);
}
pthread_mutex_unlock(&pss->session_lock);
}
char debug_msg[256];
snprintf(debug_msg, sizeof(debug_msg), "Closed subscription: %s", subscription_id);
log_info(debug_msg);
}
} else if (strcmp(msg_type, "AUTH") == 0) {
// Handle NIP-42 AUTH message
if (cJSON_GetArraySize(json) >= 2) {
cJSON* auth_payload = cJSON_GetArrayItem(json, 1);
if (cJSON_IsString(auth_payload)) {
// AUTH challenge response: ["AUTH", <challenge>] (unusual)
handle_nip42_auth_challenge_response(wsi, pss, cJSON_GetStringValue(auth_payload));
} else if (cJSON_IsObject(auth_payload)) {
// AUTH signed event: ["AUTH", <event>] (standard NIP-42)
handle_nip42_auth_signed_event(wsi, pss, auth_payload);
} else {
send_notice_message(wsi, "Invalid AUTH message format");
log_warning("Received AUTH message with invalid payload type");
}
} else {
send_notice_message(wsi, "AUTH message requires payload");
log_warning("Received AUTH message without payload");
}
} else {
// Unknown message type
char unknown_msg[128];
snprintf(unknown_msg, sizeof(unknown_msg), "Unknown message type: %.32s", msg_type);
log_warning(unknown_msg);
send_notice_message(wsi, "Unknown message type");
}
}
}
if (json) cJSON_Delete(json);
free(message);
}
}
break;
case LWS_CALLBACK_CLOSED:
log_info("WebSocket connection closed");
// Clean up session subscriptions
if (pss) {
pthread_mutex_lock(&pss->session_lock);
struct subscription* sub = pss->subscriptions;
while (sub) {
struct subscription* next = sub->session_next;
remove_subscription_from_manager(sub->id, wsi);
sub = next;
}
pss->subscriptions = NULL;
pss->subscription_count = 0;
pthread_mutex_unlock(&pss->session_lock);
pthread_mutex_destroy(&pss->session_lock);
}
break;
default:
break;
}
return 0;
}
// WebSocket protocol definition
static struct lws_protocols protocols[] = {
{
"nostr-relay-protocol",
nostr_relay_callback,
sizeof(struct per_session_data),
4096, // rx buffer size
0, NULL, 0
},
{ NULL, NULL, 0, 0, 0, NULL, 0 } // terminator
};
// Check if a port is available for binding
int check_port_available(int port) {
int sockfd;
struct sockaddr_in addr;
int result;
int reuse = 1;
// Create a socket
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
return 0; // Cannot create socket, assume port unavailable
}
// Set SO_REUSEADDR to allow binding to ports in TIME_WAIT state
// This matches libwebsockets behavior and prevents false unavailability
if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)) < 0) {
close(sockfd);
return 0; // Failed to set socket option
}
// Set up the address structure
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = htons(port);
// Try to bind to the port
result = bind(sockfd, (struct sockaddr*)&addr, sizeof(addr));
// Close the socket
close(sockfd);
// Return 1 if bind succeeded (port available), 0 if failed (port in use)
return (result == 0) ? 1 : 0;
}
// Start libwebsockets-based WebSocket Nostr relay server
int start_websocket_relay(int port_override, int strict_port) {
struct lws_context_creation_info info;
log_info("Starting libwebsockets-based Nostr relay server...");
memset(&info, 0, sizeof(info));
// Use port override if provided, otherwise use configuration
int configured_port = (port_override > 0) ? port_override : get_config_int("relay_port", DEFAULT_PORT);
int actual_port = configured_port;
int port_attempts = 0;
const int max_port_attempts = 10; // Increased from 5 to 10
// Minimal libwebsockets configuration
info.protocols = protocols;
info.gid = -1;
info.uid = -1;
info.options = LWS_SERVER_OPTION_VALIDATE_UTF8;
// Remove interface restrictions - let system choose
// info.vhost_name = NULL;
// info.iface = NULL;
// Increase max connections for relay usage
info.max_http_header_pool = 16;
info.timeout_secs = 10;
// Max payload size for Nostr events
info.max_http_header_data = 4096;
// Find an available port with pre-checking (or fail immediately in strict mode)
while (port_attempts < (strict_port ? 1 : max_port_attempts)) {
char attempt_msg[256];
snprintf(attempt_msg, sizeof(attempt_msg), "Checking port availability: %d", actual_port);
log_info(attempt_msg);
// Pre-check if port is available
if (!check_port_available(actual_port)) {
port_attempts++;
if (strict_port) {
char error_msg[256];
snprintf(error_msg, sizeof(error_msg),
"Strict port mode: port %d is not available", actual_port);
log_error(error_msg);
return -1;
} else if (port_attempts < max_port_attempts) {
char retry_msg[256];
snprintf(retry_msg, sizeof(retry_msg), "Port %d is in use, trying port %d (attempt %d/%d)",
actual_port, actual_port + 1, port_attempts + 1, max_port_attempts);
log_warning(retry_msg);
actual_port++;
continue;
} else {
char error_msg[512];
snprintf(error_msg, sizeof(error_msg),
"Failed to find available port after %d attempts (tried ports %d-%d)",
max_port_attempts, configured_port, actual_port);
log_error(error_msg);
return -1;
}
}
// Port appears available, try creating libwebsockets context
info.port = actual_port;
char binding_msg[256];
snprintf(binding_msg, sizeof(binding_msg), "Attempting to bind libwebsockets to port %d", actual_port);
log_info(binding_msg);
ws_context = lws_create_context(&info);
if (ws_context) {
// Success! Port binding worked
break;
}
// libwebsockets failed even though port check passed
// This could be due to timing or different socket options
int errno_saved = errno;
char lws_error_msg[256];
snprintf(lws_error_msg, sizeof(lws_error_msg),
"libwebsockets failed to bind to port %d (errno: %d)", actual_port, errno_saved);
log_warning(lws_error_msg);
port_attempts++;
if (strict_port) {
char error_msg[256];
snprintf(error_msg, sizeof(error_msg),
"Strict port mode: failed to bind to port %d", actual_port);
log_error(error_msg);
break;
} else if (port_attempts < max_port_attempts) {
actual_port++;
continue;
}
// If we get here, we've exhausted attempts
break;
}
if (!ws_context) {
char error_msg[512];
snprintf(error_msg, sizeof(error_msg),
"Failed to create libwebsockets context after %d attempts. Last attempted port: %d",
port_attempts, actual_port);
log_error(error_msg);
perror("libwebsockets creation error");
return -1;
}
char startup_msg[256];
if (actual_port != configured_port) {
snprintf(startup_msg, sizeof(startup_msg),
"WebSocket relay started on ws://127.0.0.1:%d (configured port %d was unavailable)",
actual_port, configured_port);
log_warning(startup_msg);
} else {
snprintf(startup_msg, sizeof(startup_msg), "WebSocket relay started on ws://127.0.0.1:%d", actual_port);
}
log_success(startup_msg);
// Main event loop with proper signal handling
while (g_server_running) {
int result = lws_service(ws_context, 1000);
if (result < 0) {
log_error("libwebsockets service error");
break;
}
}
log_info("Shutting down WebSocket server...");
lws_context_destroy(ws_context);
ws_context = NULL;
log_success("WebSocket relay shut down cleanly");
return 0;
}

49
src/websockets.h Normal file
View File

@@ -0,0 +1,49 @@
// WebSocket protocol structures and constants for C-Relay
// This header defines structures shared between main.c and websockets.c
#ifndef WEBSOCKETS_H
#define WEBSOCKETS_H
#include <pthread.h>
#include <libwebsockets.h>
#include <time.h>
#include "../nostr_core_lib/cjson/cJSON.h"
#include "config.h" // For CLIENT_IP_MAX_LENGTH and MAX_SUBSCRIPTIONS_PER_CLIENT
// Constants
#define CHALLENGE_MAX_LENGTH 128
#define AUTHENTICATED_PUBKEY_MAX_LENGTH 65 // 64 hex + null
// Enhanced per-session data with subscription management and NIP-42 authentication
struct per_session_data {
int authenticated;
struct subscription* subscriptions; // Head of this session's subscription list
pthread_mutex_t session_lock; // Per-session thread safety
char client_ip[CLIENT_IP_MAX_LENGTH]; // Client IP for logging
int subscription_count; // Number of subscriptions for this session
// NIP-42 Authentication State
char authenticated_pubkey[65]; // Authenticated public key (64 hex + null)
char active_challenge[65]; // Current challenge for this session (64 hex + null)
time_t challenge_created; // When challenge was created
time_t challenge_expires; // Challenge expiration time
int nip42_auth_required_events; // Whether NIP-42 auth is required for EVENT submission
int nip42_auth_required_subscriptions; // Whether NIP-42 auth is required for REQ operations
int auth_challenge_sent; // Whether challenge has been sent (0/1)
};
// NIP-11 HTTP session data structure for managing buffer lifetime
struct nip11_session_data {
char* json_buffer;
size_t json_length;
int headers_sent;
int body_sent;
};
// Function declarations
int start_websocket_relay(int port_override, int strict_port);
// Auth rules checking function from request_validator.c
int check_database_auth_rules(const char *pubkey, const char *operation, const char *resource_hash);
#endif // WEBSOCKETS_H

174
tests/1_nip_test.sh
View File

@@ -163,8 +163,96 @@ test_subscription() {
# Count EVENT responses (lines containing ["EVENT","sub_id",...])
local event_count=0
local filter_mismatch_count=0
if [[ -n "$response" ]]; then
event_count=$(echo "$response" | grep -c "\"EVENT\"" 2>/dev/null || echo "0")
filter_mismatch_count=$(echo "$response" | grep -c "filter does not match" 2>/dev/null || echo "0")
fi
# Clean up the filter_mismatch_count (remove any extra spaces/newlines)
filter_mismatch_count=$(echo "$filter_mismatch_count" | tr -d '[:space:]' | sed 's/[^0-9]//g')
if [[ -z "$filter_mismatch_count" ]]; then
filter_mismatch_count=0
fi
# Debug: Show what we found
print_info "Found $event_count events, $filter_mismatch_count filter mismatches"
# Check for filter mismatches (protocol violation)
if [[ "$filter_mismatch_count" -gt 0 ]]; then
print_error "$description - PROTOCOL VIOLATION: Relay sent $filter_mismatch_count events that don't match filter!"
print_error "Filter: $filter"
print_error "This indicates improper server-side filtering - relay should only send matching events"
return 1
fi
# Additional check: Analyze returned events against filter criteria
local filter_violation_count=0
if [[ -n "$response" && "$event_count" -gt 0 ]]; then
# Parse filter to check for violations
if echo "$filter" | grep -q '"kinds":\['; then
# Kind filter - check that all returned events have matching kinds
local allowed_kinds=$(echo "$filter" | sed 's/.*"kinds":\[\([^]]*\)\].*/\1/' | sed 's/[^0-9,]//g')
echo "$response" | grep '"EVENT"' | while IFS= read -r event_line; do
local event_kind=$(echo "$event_line" | jq -r '.[2].kind' 2>/dev/null)
if [[ -n "$event_kind" && "$event_kind" =~ ^[0-9]+$ ]]; then
local kind_matches=0
IFS=',' read -ra KIND_ARRAY <<< "$allowed_kinds"
for kind in "${KIND_ARRAY[@]}"; do
if [[ "$event_kind" == "$kind" ]]; then
kind_matches=1
break
fi
done
if [[ "$kind_matches" == "0" ]]; then
((filter_violation_count++))
fi
fi
done
elif echo "$filter" | grep -q '"ids":\['; then
# ID filter - check that all returned events have matching IDs
local allowed_ids=$(echo "$filter" | sed 's/.*"ids":\[\([^]]*\)\].*/\1/' | sed 's/"//g' | sed 's/[][]//g')
echo "$response" | grep '"EVENT"' | while IFS= read -r event_line; do
local event_id=$(echo "$event_line" | jq -r '.[2].id' 2>/dev/null)
if [[ -n "$event_id" ]]; then
local id_matches=0
IFS=',' read -ra ID_ARRAY <<< "$allowed_ids"
for id in "${ID_ARRAY[@]}"; do
if [[ "$event_id" == "$id" ]]; then
id_matches=1
break
fi
done
if [[ "$id_matches" == "0" ]]; then
((filter_violation_count++))
fi
fi
done
fi
fi
# Report filter violations
if [[ "$filter_violation_count" -gt 0 ]]; then
print_error "$description - FILTER VIOLATION: $filter_violation_count events don't match the filter criteria!"
print_error "Filter: $filter"
print_error "Expected only events matching the filter, but received non-matching events"
print_error "This indicates improper server-side filtering"
return 1
fi
# Also fail on count mismatches for strict filters (like specific IDs and kinds with expected counts)
if [[ "$expected_count" != "any" && "$event_count" != "$expected_count" ]]; then
if echo "$filter" | grep -q '"ids":\['; then
print_error "$description - CRITICAL VIOLATION: ID filter should return exactly $expected_count event(s), got $event_count"
print_error "Filter: $filter"
print_error "ID queries must return exactly the requested event or none"
return 1
elif echo "$filter" | grep -q '"kinds":\[' && [[ "$expected_count" =~ ^[0-9]+$ ]]; then
print_error "$description - FILTER VIOLATION: Kind filter expected $expected_count event(s), got $event_count"
print_error "Filter: $filter"
print_error "This suggests improper filtering - events of wrong kinds are being returned"
return 1
fi
fi
if [[ "$expected_count" == "any" ]]; then
@@ -291,29 +379,63 @@ run_comprehensive_test() {
# Test subscription filters
print_step "Testing various subscription filters..."
local test_failures=0
# Test 1: Get all events
test_subscription "test_all" '{}' "All events" "any"
if ! test_subscription "test_all" '{}' "All events" "any"; then
((test_failures++))
fi
# Test 2: Get events by kind
test_subscription "test_kind1" '{"kinds":[1]}' "Kind 1 events only" "2"
test_subscription "test_kind0" '{"kinds":[0]}' "Kind 0 events only" "any"
if ! test_subscription "test_kind1" '{"kinds":[1]}' "Kind 1 events only" "any"; then
((test_failures++))
fi
if ! test_subscription "test_kind0" '{"kinds":[0]}' "Kind 0 events only" "any"; then
((test_failures++))
fi
# Test 3: Get events by author (pubkey)
local test_pubkey=$(echo "$regular1" | jq -r '.pubkey' 2>/dev/null)
test_subscription "test_author" "{\"authors\":[\"$test_pubkey\"]}" "Events by specific author" "any"
if ! test_subscription "test_author" "{\"authors\":[\"$test_pubkey\"]}" "Events by specific author" "any"; then
((test_failures++))
fi
# Test 4: Get recent events (time-based)
local recent_timestamp=$(($(date +%s) - 200))
test_subscription "test_recent" "{\"since\":$recent_timestamp}" "Recent events" "any"
if ! test_subscription "test_recent" "{\"since\":$recent_timestamp}" "Recent events" "any"; then
((test_failures++))
fi
# Test 5: Get events with specific tags
test_subscription "test_tag_type" '{"#type":["regular"]}' "Events with type=regular tag" "any"
if ! test_subscription "test_tag_type" '{"#type":["regular"]}' "Events with type=regular tag" "any"; then
((test_failures++))
fi
# Test 6: Multiple kinds
test_subscription "test_multi_kinds" '{"kinds":[0,1]}' "Multiple kinds (0,1)" "any"
if ! test_subscription "test_multi_kinds" '{"kinds":[0,1]}' "Multiple kinds (0,1)" "any"; then
((test_failures++))
fi
# Test 7: Limit results
test_subscription "test_limit" '{"kinds":[1],"limit":1}' "Limited to 1 event" "1"
if ! test_subscription "test_limit" '{"kinds":[1],"limit":1}' "Limited to 1 event" "1"; then
((test_failures++))
fi
# Test 8: Specific event ID query (tests for "filter does not match" bug)
if [[ ${#REGULAR_EVENT_IDS[@]} -gt 0 ]]; then
local test_event_id="${REGULAR_EVENT_IDS[0]}"
if ! test_subscription "test_specific_id" "{\"ids\":[\"$test_event_id\"]}" "Specific event ID query" "1"; then
((test_failures++))
fi
fi
# Report subscription test results
if [[ $test_failures -gt 0 ]]; then
print_error "SUBSCRIPTION TESTS FAILED: $test_failures test(s) detected protocol violations"
return 1
else
print_success "All subscription tests passed"
fi
print_header "PHASE 4: Database Verification"
@@ -321,17 +443,28 @@ run_comprehensive_test() {
print_step "Verifying database contents..."
if command -v sqlite3 &> /dev/null; then
print_info "Events by type in database:"
sqlite3 db/c_nostr_relay.db "SELECT event_type, COUNT(*) as count FROM events GROUP BY event_type;" | while read line; do
echo " $line"
done
# Find the database file (should be in build/ directory with relay pubkey as filename)
local db_file=""
if [[ -d "../build" ]]; then
db_file=$(find ../build -name "*.db" -type f | head -1)
fi
print_info "Recent events in database:"
sqlite3 db/c_nostr_relay.db "SELECT substr(id, 1, 16) || '...' as short_id, event_type, kind, substr(content, 1, 30) || '...' as short_content FROM events ORDER BY created_at DESC LIMIT 5;" | while read line; do
echo " $line"
done
if [[ -n "$db_file" && -f "$db_file" ]]; then
print_info "Events by type in database ($db_file):"
sqlite3 "$db_file" "SELECT event_type, COUNT(*) as count FROM events GROUP BY event_type;" 2>/dev/null | while read line; do
echo " $line"
done
print_success "Database verification complete"
print_info "Recent events in database:"
sqlite3 "$db_file" "SELECT substr(id, 1, 16) || '...' as short_id, event_type, kind, substr(content, 1, 30) || '...' as short_content FROM events ORDER BY created_at DESC LIMIT 5;" 2>/dev/null | while read line; do
echo " $line"
done
print_success "Database verification complete"
else
print_warning "Database file not found in build/ directory"
print_info "Expected database files: build/*.db (named after relay pubkey)"
fi
else
print_warning "sqlite3 not available for database verification"
fi
@@ -352,6 +485,11 @@ if run_comprehensive_test; then
exit 0
else
echo
print_error "Some tests failed"
print_error "❌ TESTS FAILED: Protocol violations detected!"
print_error "The C-Relay has critical issues that need to be fixed:"
print_error " - Server-side filtering is not implemented properly"
print_error " - Events are sent to clients regardless of subscription filters"
print_error " - This violates the Nostr protocol specification"
echo
exit 1
fi

88
tests/nip42_test.log Normal file
View File

@@ -0,0 +1,88 @@
=== NIP-42 Authentication Test Started ===
2025-09-30 11:15:28 - Starting NIP-42 authentication tests
[INFO] === Starting NIP-42 Authentication Tests ===
[INFO] Checking dependencies...
[SUCCESS] Dependencies check complete
[INFO] Test 1: Checking NIP-42 support in relay info
[SUCCESS] NIP-42 is advertised in supported NIPs
2025-09-30 11:15:28 - Supported NIPs: 1,9,11,13,15,20,40,42
[INFO] Test 2: Testing AUTH challenge generation
[INFO] Found admin private key, configuring NIP-42 authentication...
[WARNING] Failed to create configuration event - proceeding with manual test
[INFO] Test 3: Testing complete NIP-42 authentication flow
[INFO] Generated test keypair: test_pubkey
[INFO] Attempting to publish event without authentication...
[INFO] Publishing test event to relay...
2025-09-30 11:15:30 - Event publish result: connecting to ws://localhost:8888... ok.
{"kind":1,"id":"acfc4da1903ce1c065f2c472348b21837a322c79cb4b248c62de5cff9b5b6607","pubkey":"d3e8d83eabac2a28e21039136a897399f4866893dd43bfbf0bdc8391913a4013","created_at":1759245329,"tags":[],"content":"NIP-42 test event - should require auth","sig":"2051b3da705214d5b5e95fb5b4dd9f1c893666965f7c51ccd2a9ccd495b67dd76ed3ce9768f0f2a16a3f9a602368e8102758ca3cc1408280094abf7e92fcc75e"}
publishing to ws://localhost:8888... success.
[SUCCESS] Relay requested authentication as expected
[INFO] Test 4: Testing WebSocket AUTH message handling
[INFO] Testing WebSocket connection and AUTH message...
[INFO] Sending test message via WebSocket...
2025-09-30 11:15:30 - WebSocket response:
[INFO] No AUTH challenge in WebSocket response
[INFO] Test 5: Testing NIP-42 configuration options
[INFO] Retrieving current relay configuration...
[WARNING] Could not retrieve configuration events
[INFO] Test 6: Testing NIP-42 performance and stability
[INFO] Testing multiple authentication attempts...
2025-09-30 11:15:31 - Attempt 1: .297874340s - connecting to ws://localhost:8888... ok.
{"kind":1,"id":"0d742f093b7be0ce811068e7a6171573dd225418c9459f5c7e9580f57d88af7b","pubkey":"37d1a52ec83a837eb8c6ae46df5c892f338c65ae0c29eb4873e775082252a18a","created_at":1759245331,"tags":[],"content":"Performance test event 1","sig":"d4aec950c47fbd4c1da637b84fafbde570adf86e08795236fb6a3f7e12d2dbaa16cb38cbb68d3b9755d186b20800bdb84b0a050f8933d06b10991a9542fe9909"}
publishing to ws://localhost:8888... success.
2025-09-30 11:15:32 - Attempt 2: .270493759s - connecting to ws://localhost:8888... ok.
{"kind":1,"id":"b45ae1b0458e284ed89b6de453bab489d506352680f6d37c8a5f0aed9eebc7a5","pubkey":"37d1a52ec83a837eb8c6ae46df5c892f338c65ae0c29eb4873e775082252a18a","created_at":1759245331,"tags":[],"content":"Performance test event 2","sig":"f9702aa537ec1485d151a0115c38c7f6f1bc05a63929be784e33850b46be6a961996eb922b8b337d607312c8e4583590ee35f38330300e19ab921f94926719c5"}
publishing to ws://localhost:8888... success.
2025-09-30 11:15:32 - Attempt 3: .239220029s - connecting to ws://localhost:8888... ok.
{"kind":1,"id":"5f70f9cb2a30a12e7d088e62a9295ef2fbea4f40a1d8b07006db03f610c5abce","pubkey":"37d1a52ec83a837eb8c6ae46df5c892f338c65ae0c29eb4873e775082252a18a","created_at":1759245332,"tags":[],"content":"Performance test event 3","sig":"ea2e1611ce3ddea3aa73764f4542bad7d922fc0d2ed40e58dcc2a66cb6e046bfae22d6baef296eb51d965a22b2a07394fc5f8664e3a7777382ae523431c782cd"}
publishing to ws://localhost:8888... success.
2025-09-30 11:15:33 - Attempt 4: .221429674s - connecting to ws://localhost:8888... ok.
{"kind":1,"id":"eafcf5f7e0bd0be35267f13ff93eef339faec6a5af13fe451fee2b7443b9de6e","pubkey":"37d1a52ec83a837eb8c6ae46df5c892f338c65ae0c29eb4873e775082252a18a","created_at":1759245332,"tags":[],"content":"Performance test event 4","sig":"976017abe67582af29d46cd54159ce0465c94caf348be35f26b6522cb48c4c9ce5ba9835e92873cf96a906605a032071360fc85beea815a8e4133a4f45d2bf0a"}
publishing to ws://localhost:8888... success.
2025-09-30 11:15:33 - Attempt 5: .242410067s - connecting to ws://localhost:8888... ok.
{"kind":1,"id":"c7cf6776000a325b1180240c61ef20b849b84dee3f5d2efed4c1a9e9fbdbd7b1","pubkey":"37d1a52ec83a837eb8c6ae46df5c892f338c65ae0c29eb4873e775082252a18a","created_at":1759245333,"tags":[],"content":"Performance test event 5","sig":"18b4575bd644146451dcf86607d75f358828ce2907e8904bd08b903ff5d79ec5a69ff60168735975cc406dcee788fd22fc7bf7c97fb7ac6dff3580eda56cee2e"}
publishing to ws://localhost:8888... success.
[SUCCESS] Performance test completed: 5/5 successful responses
[INFO] Test 7: Testing kind-specific NIP-42 authentication requirements
[INFO] Generated test keypair for kind-specific tests: test_pubkey
[INFO] Testing kind 1 event (regular note) - should work without authentication...
2025-09-30 11:15:34 - Kind 1 event result: connecting to ws://localhost:8888... ok.
{"kind":1,"id":"012690335e48736fd29769669d2bda15a079183c1d0f27b8400366a54b5b9ddd","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245334,"tags":[],"content":"Regular note - should not require auth","sig":"a3a0ce218666d2a374983a343bc24da5a727ce251c23828171021f15a3ab441a0c86f56200321467914ce4bee9a987f1de301151467ae639d7f941bac7fbe68e"}
publishing to ws://localhost:8888... success.
[SUCCESS] Kind 1 event accepted without authentication (correct behavior)
[INFO] Testing kind 4 event (direct message) - should require authentication...
2025-09-30 11:15:44 - Kind 4 event result: connecting to ws://localhost:8888... ok.
{"kind":4,"id":"e629dd91320d48c1e3103ec16e40c707c2ee8143012c9ad8bb9d32f98610f447","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245334,"tags":[["p,test_pubkey"]],"content":"This is a direct message - should require auth","sig":"7677b3f2932fb4979bab3da6d241217b7ea2010411fc8bf5a51f6987f38696d5634f91a30b13e0f4861479ceabff995b3bb2eb2fc74af5f3d1175235d5448ce2"}
publishing to ws://localhost:8888...
[SUCCESS] Kind 4 event requested authentication (correct behavior for DMs)
[INFO] Testing kind 14 event (chat message) - should require authentication...
2025-09-30 11:15:55 - Kind 14 event result: connecting to ws://localhost:8888... ok.
{"kind":14,"id":"a5398c5851dd72a8980723c91d35345bd0088b800102180dd41af7056f1cad50","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245344,"tags":[["p,test_pubkey"]],"content":"Chat message - should require auth","sig":"62d43f3f81755d4ef81cbfc8aca9abc11f28b0c45640f19d3dd41a09bae746fe7a4e9d8e458c416dcd2cab02deb090ce1e29e8426d9be5445d130eaa00d339f2"}
publishing to ws://localhost:8888...
[SUCCESS] Kind 14 event requested authentication (correct behavior for DMs)
[INFO] Testing other event kinds - should work without authentication...
2025-09-30 11:15:55 - Kind 0 event result: connecting to ws://localhost:8888... ok.
{"kind":0,"id":"069ac4db07da3230681aa37ab9e6a2aa48e2c199245259681e45ffb2f1b21846","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245355,"tags":[],"content":"Test event kind 0 - should not require auth","sig":"3c99b97c0ea2d18bc88fc07b2e95e213b6a6af804512d62158f8fd63cc24a3937533b830f59d38ccacccf98ba2fb0ed7467b16271154d4dd37fbc075eba32e49"}
publishing to ws://localhost:8888... success.
[SUCCESS] Kind 0 event accepted without authentication (correct)
2025-09-30 11:15:56 - Kind 3 event result: connecting to ws://localhost:8888... ok.
{"kind":3,"id":"1dd1ccb13ebd0d50b2aa79dbb938b408a24f0a4dd9f872b717ed91ae6729051c","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245355,"tags":[],"content":"Test event kind 3 - should not require auth","sig":"c205cc76f687c3957cf8b35cd8346fd8c2e44d9ef82324b95a7eef7f57429fb6f2ab1d0263dd5d00204dd90e626d5918a8710341b0d68a5095b41455f49cf0dd"}
publishing to ws://localhost:8888... success.
[SUCCESS] Kind 3 event accepted without authentication (correct)
2025-09-30 11:15:56 - Kind 7 event result: connecting to ws://localhost:8888... ok.
{"kind":7,"id":"b6161b1da8a4d362e3c230df99c4f87b6311ef6e9f67e03a2476f8a6366352c1","pubkey":"ad362b9bbf61b140c5f677a2d091d622fef6fa186c579e6600dd8b24a85a2260","created_at":1759245356,"tags":[],"content":"Test event kind 7 - should not require auth","sig":"ab06c4b00a04d726109acd02d663e30188ff9ee854cf877e854fda90dd776a649ef3fab8ae5b530b4e6b5530490dd536a281a721e471bd3748a0dacc4eac9622"}
publishing to ws://localhost:8888... success.
[SUCCESS] Kind 7 event accepted without authentication (correct)
[INFO] Kind-specific authentication test completed
[INFO] === NIP-42 Test Results Summary ===
[SUCCESS] Dependencies: PASS
[SUCCESS] NIP-42 Support: PASS
[SUCCESS] Auth Challenge: PASS
[SUCCESS] Auth Flow: PASS
[SUCCESS] WebSocket AUTH: PASS
[SUCCESS] Configuration: PASS
[SUCCESS] Performance: PASS
[SUCCESS] Kind-Specific Auth: PASS
[SUCCESS] All NIP-42 tests completed successfully!
[SUCCESS] NIP-42 authentication implementation is working correctly
[INFO] === NIP-42 Authentication Tests Complete ===

1054
tests/white_black_list_test.sh
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File diff suppressed because it is too large Load Diff

244
tests/white_black_test.sh Executable file
View File

@@ -0,0 +1,244 @@
#!/bin/bash
# C-Relay Whitelist/Blacklist Test Script
# Tests the relay's authentication functionality using nak
set -e # Exit on any error
# Configuration
RELAY_URL="ws://localhost:8888"
ADMIN_PRIVKEY="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
ADMIN_PUBKEY="6a04ab98d9e4774ad806e302dddeb63bea16b5cb5f223ee77478e861bb583eb3"
RELAY_PUBKEY="4f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0f0b704075871aa"
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color
# Logging functions
log_info() {
echo -e "${BLUE}[INFO]${NC} $1"
}
log_success() {
echo -e "${GREEN}[SUCCESS]${NC} $1"
}
log_error() {
echo -e "${RED}[ERROR]${NC} $1"
}
log_warning() {
echo -e "${YELLOW}[WARNING]${NC} $1"
}
# Check if nak is installed
check_nak() {
if ! command -v nak &> /dev/null; then
log_error "nak command not found. Please install nak first."
log_error "Visit: https://github.com/fiatjaf/nak"
exit 1
fi
log_success "nak is available"
}
# Generate test keypair
generate_test_keypair() {
log_info "Generating test keypair..."
# Generate private key
TEST_PRIVKEY=$(nak key generate 2>/dev/null)
if [ -z "$TEST_PRIVKEY" ]; then
log_error "Failed to generate private key"
exit 1
fi
# Derive public key from private key
TEST_PUBKEY=$(nak key public "$TEST_PRIVKEY" 2>/dev/null)
if [ -z "$TEST_PUBKEY" ]; then
log_error "Failed to derive public key from private key"
exit 1
fi
log_success "Generated test keypair:"
log_info " Private key: $TEST_PRIVKEY"
log_info " Public key: $TEST_PUBKEY"
}
# Create test event
create_test_event() {
local timestamp=$(date +%s)
local content="Test event at timestamp $timestamp"
log_info "Creating test event (kind 1) with content: '$content'"
# Create event using nak
EVENT_JSON=$(nak event \
--kind 1 \
--content "$content" \
--sec "$TEST_PRIVKEY" \
--tag 't=test')
# Extract event ID
EVENT_ID=$(echo "$EVENT_JSON" | jq -r '.id')
if [ -z "$EVENT_ID" ] || [ "$EVENT_ID" = "null" ]; then
log_error "Failed to create test event"
exit 1
fi
log_success "Created test event with ID: $EVENT_ID"
}
# Test 1: Post event and verify retrieval
test_post_and_retrieve() {
log_info "=== TEST 1: Post event and verify retrieval ==="
# Post the event
log_info "Posting test event to relay..."
POST_RESULT=$(echo "$EVENT_JSON" | nak event "$RELAY_URL")
if echo "$POST_RESULT" | grep -q "error\|failed\|denied"; then
log_error "Failed to post event: $POST_RESULT"
return 1
fi
log_success "Event posted successfully"
# Wait a moment for processing
sleep 2
# Try to retrieve the event
log_info "Retrieving event from relay..."
RETRIEVE_RESULT=$(nak req \
--id "$EVENT_ID" \
"$RELAY_URL")
if echo "$RETRIEVE_RESULT" | grep -q "$EVENT_ID"; then
log_success "Event successfully retrieved from relay"
return 0
else
log_error "Failed to retrieve event from relay"
log_error "Query result: $RETRIEVE_RESULT"
return 1
fi
}
# Send admin command to add user to blacklist
add_to_blacklist() {
log_info "Adding test user to blacklist..."
# Create the admin command
COMMAND="[\"blacklist\", \"pubkey\", \"$TEST_PUBKEY\"]"
# Encrypt the command using NIP-44
ENCRYPTED_COMMAND=$(nak encrypt "$COMMAND" \
--sec "$ADMIN_PRIVKEY" \
--recipient-pubkey "$RELAY_PUBKEY")
if [ -z "$ENCRYPTED_COMMAND" ]; then
log_error "Failed to encrypt admin command"
return 1
fi
# Create admin event
ADMIN_EVENT=$(nak event \
--kind 23456 \
--content "$ENCRYPTED_COMMAND" \
--sec "$ADMIN_PRIVKEY" \
--tag "p=$RELAY_PUBKEY")
# Post admin event
ADMIN_RESULT=$(echo "$ADMIN_EVENT" | nak event "$RELAY_URL")
if echo "$ADMIN_RESULT" | grep -q "error\|failed\|denied"; then
log_error "Failed to send admin command: $ADMIN_RESULT"
return 1
fi
log_success "Admin command sent successfully - user added to blacklist"
# Wait for the relay to process the admin command
sleep 3
}
# Test 2: Try to post after blacklisting
test_blacklist_post() {
log_info "=== TEST 2: Attempt to post event after blacklisting ==="
# Create a new test event
local timestamp=$(date +%s)
local content="Blacklisted test event at timestamp $timestamp"
log_info "Creating new test event for blacklisted user..."
NEW_EVENT_JSON=$(nak event \
--kind 1 \
--content "$content" \
--sec "$TEST_PRIVKEY" \
--tag 't=blacklist-test')
NEW_EVENT_ID=$(echo "$NEW_EVENT_JSON" | jq -r '.id')
# Try to post the event
log_info "Attempting to post event with blacklisted user..."
POST_RESULT=$(echo "$NEW_EVENT_JSON" | nak event "$RELAY_URL" 2>&1)
# Check if posting failed (should fail for blacklisted user)
if echo "$POST_RESULT" | grep -q "error\|failed\|denied\|blocked"; then
log_success "Event posting correctly blocked for blacklisted user"
return 0
else
log_error "Event posting was not blocked - blacklist may not be working"
log_error "Post result: $POST_RESULT"
return 1
fi
}
# Main test function
main() {
log_info "Starting C-Relay Whitelist/Blacklist Test"
log_info "=========================================="
# Check prerequisites
check_nak
# Generate test keypair
generate_test_keypair
# Create test event
create_test_event
# Test 1: Post and retrieve
if test_post_and_retrieve; then
log_success "TEST 1 PASSED: Event posting and retrieval works"
else
log_error "TEST 1 FAILED: Event posting/retrieval failed"
exit 1
fi
# Add user to blacklist
if add_to_blacklist; then
log_success "Blacklist command sent successfully"
else
log_error "Failed to send blacklist command"
exit 1
fi
# Test 2: Try posting after blacklist
if test_blacklist_post; then
log_success "TEST 2 PASSED: Blacklist functionality works correctly"
else
log_error "TEST 2 FAILED: Blacklist functionality not working"
exit 1
fi
log_success "All tests passed! Whitelist/blacklist functionality is working correctly."
}
# Run main function
main "$@"