tildefriends/src/ssb.rpc.c

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#include "ssb.rpc.h"
#include "log.h"
#include "mem.h"
#include "ssb.h"
#include "ssb.db.h"
#include "util.js.h"
#include "sqlite3.h"
#include "uv.h"
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#if !defined(_countof)
#define _countof(a) ((int)(sizeof((a)) / sizeof(*(a))))
#endif
static void _tf_ssb_connection_send_history_stream(tf_ssb_connection_t* connection, int32_t request_number, const char* author, int64_t sequence, bool keys, bool live);
static void _tf_ssb_connection_send_history_stream_internal(tf_ssb_connection_t* connection, int32_t request_number, const char* author, int64_t sequence, bool keys, bool live);
static void _tf_ssb_rpc_start_delete_blobs(tf_ssb_t* ssb, int delay_ms);
static int64_t _get_global_setting_int64(tf_ssb_t* ssb, const char* name, int64_t default_value)
{
int64_t result = default_value;
sqlite3* db = tf_ssb_acquire_db_reader(ssb);
sqlite3_stmt* statement;
if (sqlite3_prepare(db, "SELECT json_extract(value, '$.' || ?) FROM properties WHERE id = 'core' AND key = 'settings'", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, name, -1, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
result = sqlite3_column_int64(statement, 0);
}
}
sqlite3_finalize(statement);
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_reader(ssb, db);
return result;
}
static bool _get_global_setting_bool(tf_ssb_t* ssb, const char* name, bool default_value)
{
bool result = default_value;
sqlite3* db = tf_ssb_acquire_db_reader(ssb);
sqlite3_stmt* statement;
if (sqlite3_prepare(db, "SELECT json_extract(value, '$.' || ?) FROM properties WHERE id = 'core' AND key = 'settings'", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, name, -1, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
result = sqlite3_column_int(statement, 0) != 0;
}
}
sqlite3_finalize(statement);
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_reader(ssb, db);
return result;
}
static bool _get_global_setting_string(tf_ssb_t* ssb, const char* name, char* out_value, size_t size)
{
bool result = false;
sqlite3* db = tf_ssb_acquire_db_reader(ssb);
sqlite3_stmt* statement;
if (sqlite3_prepare(db, "SELECT json_extract(value, '$.' || ?) FROM properties WHERE id = 'core' AND key = 'settings'", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, name, -1, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
snprintf(out_value, size, "%s", sqlite3_column_text(statement, 0));
result = true;
}
}
sqlite3_finalize(statement);
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_reader(ssb, db);
return result;
}
static void _tf_ssb_rpc_gossip_ping_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
char buffer[256];
snprintf(buffer, sizeof(buffer), "%" PRId64, (int64_t)time(NULL) * 1000);
tf_ssb_connection_rpc_send(
connection,
flags,
-request_number,
(const uint8_t*)buffer,
strlen(buffer),
NULL,
NULL,
NULL);
if (flags & k_ssb_rpc_flag_end_error)
{
tf_ssb_connection_remove_request(connection, request_number);
}
}
static void _tf_ssb_rpc_gossip_ping(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_connection_add_request(connection, -request_number, _tf_ssb_rpc_gossip_ping_callback, NULL, NULL, NULL);
}
static void _tf_ssb_rpc_blobs_get(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
if (flags & k_ssb_rpc_flag_end_error)
{
return;
}
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_connection_get_context(connection);
JSValue ids = JS_GetPropertyStr(context, args, "args");
int length = tf_util_get_length(context, ids);
bool success = false;
for (int i = 0; i < length; i++)
{
JSValue arg = JS_GetPropertyUint32(context, ids, i);
const char* id = NULL;
if (JS_IsString(arg))
{
id = JS_ToCString(context, arg);
}
else
{
JSValue key = JS_GetPropertyStr(context, arg, "key");
id = JS_ToCString(context, key);
JS_FreeValue(context, key);
}
uint8_t* blob = NULL;
size_t size = 0;
const size_t k_send_max = 8192;
if (tf_ssb_db_blob_get(ssb, id, &blob, &size))
{
for (size_t offset = 0; offset < size; offset += k_send_max)
{
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_binary | k_ssb_rpc_flag_stream,
-request_number,
blob + offset,
offset + k_send_max <= size ? k_send_max : (size - offset),
NULL,
NULL,
NULL);
}
success = true;
tf_free(blob);
}
JS_FreeCString(context, id);
JS_FreeValue(context, arg);
}
JS_FreeValue(context, ids);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_end_error | k_ssb_rpc_flag_stream,
-request_number,
(const uint8_t*)(success ? "true" : "false"),
strlen(success ? "true" : "false"),
NULL,
NULL,
NULL);
}
static void _tf_ssb_rpc_blobs_has(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_connection_get_context(connection);
JSValue ids = JS_GetPropertyStr(context, args, "args");
JSValue id = JS_GetPropertyUint32(context, ids, 0);
const char* id_str = JS_ToCString(context, id);
bool has = tf_ssb_db_blob_has(ssb, id_str);
JS_FreeCString(context, id_str);
JS_FreeValue(context, id);
JS_FreeValue(context, ids);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json,
-request_number,
(const uint8_t*)(has ? "true" : "false"),
strlen(has ? "true" : "false"),
NULL,
NULL,
NULL);
}
static void _tf_ssb_rpc_blob_wants_added_callback(tf_ssb_t* ssb, const char* id, void* user_data)
{
tf_ssb_connection_t* connection = user_data;
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, id, JS_NewInt64(context, -1));
tf_ssb_connection_rpc_send_json(connection, k_ssb_rpc_flag_stream, -blob_wants->request_number, message, NULL, NULL, NULL);
JS_FreeValue(context, message);
}
static void _tf_ssb_rpc_request_more_blobs(tf_ssb_connection_t* connection)
{
JSContext* context = tf_ssb_connection_get_context(connection);
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
int64_t age = _get_global_setting_int64(ssb, "blob_fetch_age_seconds", -1);
int64_t timestamp = -1;
if (age == 0)
{
/* Don't fetch any blobs. */
return;
}
else if (age > 0)
{
int64_t now = (int64_t)time(NULL) * 1000ULL;
timestamp = now - age * 1000ULL;
}
sqlite3* db = tf_ssb_acquire_db_reader(ssb);
sqlite3_stmt* statement;
if (sqlite3_prepare(db, "SELECT id FROM blob_wants_view WHERE id > ? AND timestamp > ? ORDER BY id LIMIT 32", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, blob_wants->last_id, -1, NULL) == SQLITE_OK &&
sqlite3_bind_int64(statement, 2, timestamp) == SQLITE_OK)
{
while (sqlite3_step(statement) == SQLITE_ROW)
{
const char* blob = (const char*)sqlite3_column_text(statement, 0);
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob, JS_NewInt32(context, -1));
tf_ssb_connection_rpc_send_json(connection, k_ssb_rpc_flag_stream, -blob_wants->request_number, message, NULL, NULL, NULL);
JS_FreeValue(context, message);
snprintf(blob_wants->last_id, sizeof(blob_wants->last_id), "%s", blob);
blob_wants->wants_sent++;
}
}
sqlite3_finalize(statement);
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_reader(ssb, db);
}
static void _tf_ssb_rpc_blobs_createWants(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
tf_ssb_add_blob_want_added_callback(ssb, _tf_ssb_rpc_blob_wants_added_callback, NULL, connection);
blob_wants->request_number = request_number;
_tf_ssb_rpc_request_more_blobs(connection);
}
typedef struct tunnel_t
{
tf_ssb_connection_t* connection;
int32_t request_number;
} tunnel_t;
void _tf_ssb_rpc_tunnel_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tunnel_t* tun = user_data;
tf_ssb_connection_rpc_send(tun->connection, flags, tun->request_number, message, size, NULL, NULL, NULL);
}
void _tf_ssb_rpc_tunnel_cleanup(tf_ssb_t* ssb, void* user_data)
{
tf_free(user_data);
}
static void _tf_ssb_rpc_tunnel_connect(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
if (!_get_global_setting_bool(ssb, "room", true))
{
tf_ssb_connection_rpc_send_error_method_not_allowed(connection, flags, -request_number, "tunnel.connect");
return;
}
JSContext* context = tf_ssb_connection_get_context(connection);
JSValue arg_array = JS_GetPropertyStr(context, args, "args");
JSValue arg = JS_GetPropertyUint32(context, arg_array, 0);
JSValue origin = JS_GetPropertyStr(context, arg, "origin");
JSValue portal = JS_GetPropertyStr(context, arg, "portal");
JSValue target = JS_GetPropertyStr(context, arg, "target");
if (JS_IsUndefined(origin) &&
!JS_IsUndefined(portal) &&
!JS_IsUndefined(target))
{
const char* target_str = JS_ToCString(context, target);
tf_ssb_connection_t* target_connection = tf_ssb_connection_get(ssb, target_str);
if (target_connection)
{
int32_t tunnel_request_number = tf_ssb_connection_next_request_number(target_connection);
const char* portal_str = JS_ToCString(context, portal);
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "tunnel"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "connect"));
JS_SetPropertyStr(context, message, "name", name);
JSValue arg_obj = JS_NewObject(context);
char origin_str[k_id_base64_len] = "";
tf_ssb_connection_get_id(connection, origin_str, sizeof(origin_str));
JS_SetPropertyStr(context, arg_obj, "origin", JS_NewString(context, origin_str));
JS_SetPropertyStr(context, arg_obj, "portal", JS_NewString(context, portal_str));
JS_SetPropertyStr(context, arg_obj, "target", JS_NewString(context, target_str));
JSValue arg_array = JS_NewArray(context);
JS_SetPropertyUint32(context, arg_array, 0, arg_obj);
JS_SetPropertyStr(context, message, "args", arg_array);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "duplex"));
tf_ssb_connection_rpc_send_json(
target_connection,
k_ssb_rpc_flag_stream,
tunnel_request_number,
message,
NULL,
NULL,
NULL);
tunnel_t* data0 = tf_malloc(sizeof(tunnel_t));
*data0 = (tunnel_t)
{
.connection = target_connection,
.request_number = tunnel_request_number,
};
tunnel_t* data1 = tf_malloc(sizeof(tunnel_t));
*data1 = (tunnel_t)
{
.connection = connection,
.request_number = -request_number,
};
tf_ssb_connection_add_request(connection, -request_number, _tf_ssb_rpc_tunnel_callback, _tf_ssb_rpc_tunnel_cleanup, data0, target_connection);
tf_ssb_connection_add_request(target_connection, tunnel_request_number, _tf_ssb_rpc_tunnel_callback, _tf_ssb_rpc_tunnel_cleanup, data1, connection);
JS_FreeValue(context, message);
JS_FreeCString(context, portal_str);
}
JS_FreeCString(context, target_str);
}
else if (!JS_IsUndefined(origin) &&
!JS_IsUndefined(portal) &&
!JS_IsUndefined(target))
{
const char* origin_str = JS_ToCString(context, origin);
const char* portal_str = JS_ToCString(context, portal);
const char* target_str = JS_ToCString(context, target);
tf_ssb_connection_tunnel_create(ssb, portal_str, -request_number, origin_str);
JS_FreeCString(context, origin_str);
JS_FreeCString(context, portal_str);
JS_FreeCString(context, target_str);
}
JS_FreeValue(context, origin);
JS_FreeValue(context, portal);
JS_FreeValue(context, target);
JS_FreeValue(context, arg);
JS_FreeValue(context, arg_array);
}
static void _tf_ssb_rpc_room_meta(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue response = JS_FALSE;
if (_get_global_setting_bool(ssb, "room", true))
{
char room_name[1024] = "tilde friends tunnel";
_get_global_setting_string(ssb, "room_name", room_name, sizeof(room_name));
response = JS_NewObject(context);
JS_SetPropertyStr(context, response, "name", JS_NewString(context, room_name));
JS_SetPropertyStr(context, response, "membership", JS_FALSE);
JSValue features = JS_NewArray(context);
JS_SetPropertyUint32(context, features, 0, JS_NewString(context, "tunnel"));
JS_SetPropertyUint32(context, features, 1, JS_NewString(context, "room1"));
JS_SetPropertyUint32(context, features, 2, JS_NewString(context, "room2"));
JS_SetPropertyStr(context, response, "features", features);
}
tf_ssb_connection_rpc_send_json(
connection,
flags,
-request_number,
response,
NULL,
NULL,
NULL);
JS_FreeValue(context, response);
}
static void _tf_ssb_rpc_room_attendants(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
if (!_get_global_setting_bool(ssb, "room", true))
{
tf_ssb_connection_rpc_send_error_method_not_allowed(connection, flags, -request_number, "room.attendants");
return;
}
JSContext* context = tf_ssb_get_context(ssb);
JSValue joined = JS_NewObject(context);
JS_SetPropertyStr(context, joined, "type", JS_NewString(context, "joined"));
char my_id[k_id_base64_len] = "";
if (tf_ssb_connection_get_id(connection, my_id, sizeof(my_id)))
{
JS_SetPropertyStr(context, joined, "id", JS_NewString(context, my_id));
}
JSValue state = JS_NewObject(context);
JS_SetPropertyStr(context, state, "type", JS_NewString(context, "state"));
JSValue ids = JS_NewArray(context);
int id_count = 0;
tf_ssb_connection_t* connections[1024];
int count = tf_ssb_get_connections(ssb, connections, _countof(connections));
for (int i = 0; i < count; i++)
{
char id[k_id_base64_len] = { 0 };
if (tf_ssb_connection_is_attendant(connections[i]) &&
tf_ssb_connection_get_id(connections[i], id, sizeof(id)))
{
JS_SetPropertyUint32(context, ids, id_count++, JS_NewString(context, id));
tf_ssb_connection_rpc_send_json(
connections[i],
flags,
-tf_ssb_connection_get_attendant_request_number(connections[i]),
joined,
NULL,
NULL,
NULL);
}
}
JS_SetPropertyStr(context, state, "ids", ids);
tf_ssb_connection_rpc_send_json(connection, flags, -request_number, state, NULL, NULL, NULL);
JS_FreeValue(context, joined);
JS_FreeValue(context, state);
tf_ssb_connection_set_attendant(connection, true, request_number);
}
typedef struct _blobs_get_t
{
char id[k_blob_id_len];
size_t received;
size_t expected_size;
bool done;
bool storing;
tf_ssb_t* ssb;
uint8_t buffer[];
} blobs_get_t;
static void _tf_ssb_rpc_blob_store_callback(const char* id, bool is_new, void* user_data)
{
blobs_get_t* get = user_data;
get->storing = false;
if (get->done)
{
tf_free(get);
}
}
static void _tf_ssb_rpc_connection_blobs_get_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
blobs_get_t* get = user_data;
if ((flags & k_ssb_rpc_mask_type) == k_ssb_rpc_flag_binary && size > 0 && get->received + size <= get->expected_size)
{
memcpy(get->buffer + get->received, message, size);
get->received += size;
}
else if ((flags & k_ssb_rpc_mask_type) == k_ssb_rpc_flag_json)
{
if (JS_ToBool(context, args))
{
get->storing = true;
tf_ssb_db_blob_store_async(ssb, get->buffer, get->received, _tf_ssb_rpc_blob_store_callback, get);
}
/* TODO: Should we send the response in the callback? */
bool stored = true;
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream | k_ssb_rpc_flag_end_error,
-request_number,
(const uint8_t*)(stored ? "true" : "false"),
strlen(stored ? "true" : "false"),
NULL,
NULL,
NULL);
}
}
static void _tf_ssb_rpc_connection_blobs_get_cleanup(tf_ssb_t* ssb, void* user_data)
{
blobs_get_t* get = user_data;
get->done = true;
if (!get->storing)
{
tf_free(get);
}
}
static void _tf_ssb_rpc_connection_blobs_get(tf_ssb_connection_t* connection, const char* blob_id, size_t size)
{
blobs_get_t* get = tf_malloc(sizeof(blobs_get_t) + size);
*get = (blobs_get_t) { .ssb = tf_ssb_connection_get_ssb(connection), .expected_size = size };
snprintf(get->id, sizeof(get->id), "%s", blob_id);
memset(get->buffer, 0, size);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "blobs"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "get"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "source"));
JSValue args = JS_NewArray(context);
JS_SetPropertyUint32(context, args, 0, JS_NewString(context, blob_id));
JS_SetPropertyStr(context, message, "args", args);
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
tf_ssb_connection_next_request_number(connection),
message,
_tf_ssb_rpc_connection_blobs_get_callback,
_tf_ssb_rpc_connection_blobs_get_cleanup,
get);
JS_FreeValue(context, message);
}
static void _tf_ssb_rpc_connection_blobs_createWants_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
if (!blob_wants)
{
return;
}
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_connection_get_context(connection);
JSValue name = JS_GetPropertyStr(context, args, "name");
if (!JS_IsUndefined(name))
{
/* { name: "Error" } */
JS_FreeValue(context, name);
return;
}
JSPropertyEnum* ptab;
uint32_t plen;
JS_GetOwnPropertyNames(context, &ptab, &plen, args, JS_GPN_STRING_MASK);
for (uint32_t i = 0; i < plen; ++i)
{
JSValue key = JS_AtomToString(context, ptab[i].atom);
JSPropertyDescriptor desc;
JSValue key_value = JS_NULL;
if (JS_GetOwnProperty(context, &desc, args, ptab[i].atom) == 1)
{
key_value = desc.value;
JS_FreeValue(context, desc.setter);
JS_FreeValue(context, desc.getter);
}
const char* blob_id = JS_ToCString(context, key);
int64_t size = 0;
JS_ToInt64(context, &size, key_value);
if (--blob_wants->wants_sent == 0)
{
_tf_ssb_rpc_request_more_blobs(connection);
}
if (size < 0)
{
size_t blob_size = 0;
if (tf_ssb_db_blob_get(ssb, blob_id, NULL, &blob_size))
{
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob_id, JS_NewInt64(context, blob_size));
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
-blob_wants->request_number,
message,
NULL,
NULL,
NULL);
JS_FreeValue(context, message);
}
else if (size == -1LL)
{
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob_id, JS_NewInt64(context, -2));
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
-blob_wants->request_number,
message,
NULL,
NULL,
NULL);
JS_FreeValue(context, message);
}
}
else
{
_tf_ssb_rpc_connection_blobs_get(connection, blob_id, size);
}
JS_FreeCString(context, blob_id);
JS_FreeValue(context, key);
JS_FreeValue(context, key_value);
}
for (uint32_t i = 0; i < plen; ++i)
{
JS_FreeAtom(context, ptab[i].atom);
}
js_free(context, ptab);
}
static void _tf_ssb_rpc_connection_room_attendants_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue type = JS_GetPropertyStr(context, args, "type");
const char* type_string = JS_ToCString(context, type);
if (!type_string)
{
tf_ssb_connection_rpc_send_error(connection, flags, -request_number, "Missing type.");
}
else if (strcmp(type_string, "state") == 0)
{
tf_ssb_connection_clear_room_attendants(connection);
JSValue ids = JS_GetPropertyStr(context, args, "ids");
int length = tf_util_get_length(context, ids);
for (int i = 0; i < length; i++)
{
JSValue id = JS_GetPropertyUint32(context, ids, i);
const char* id_string = JS_ToCString(context, id);
if (id_string)
{
tf_ssb_connection_add_room_attendant(connection, id_string);
}
JS_FreeCString(context, id_string);
JS_FreeValue(context, id);
}
JS_FreeValue(context, ids);
}
else if (strcmp(type_string, "joined") == 0)
{
JSValue id = JS_GetPropertyStr(context, args, "id");
const char* id_string = JS_ToCString(context, id);
if (id_string)
{
tf_ssb_connection_add_room_attendant(connection, id_string);
}
JS_FreeCString(context, id_string);
JS_FreeValue(context, id);
}
else if (strcmp(type_string, "left") == 0)
{
JSValue id = JS_GetPropertyStr(context, args, "id");
const char* id_string = JS_ToCString(context, id);
if (id_string)
{
tf_ssb_connection_remove_room_attendant(connection, id_string);
}
JS_FreeCString(context, id_string);
JS_FreeValue(context, id);
}
else
{
tf_ssb_connection_rpc_send_error(connection, flags, -request_number, "Unexpected room.attendants response type.");
}
JS_FreeCString(context, type_string);
JS_FreeValue(context, type);
}
static bool _is_error(JSContext* context, JSValue message)
{
JSValue name = JS_GetPropertyStr(context, message, "name");
const char* name_string = JS_ToCString(context, name);
bool is_error = false;
if (name_string && strcmp(name_string, "Error") == 0)
{
is_error = true;
}
JS_FreeCString(context, name_string);
JS_FreeValue(context, name);
return is_error;
}
static void _tf_ssb_rpc_connection_tunnel_isRoom_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
if (_is_error(context, args))
{
return;
}
if (JS_IsObject(args))
{
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "room"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "attendants"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "source"));
JS_SetPropertyStr(context, message, "args", JS_NewArray(context));
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
tf_ssb_connection_next_request_number(connection),
message,
_tf_ssb_rpc_connection_room_attendants_callback,
NULL,
NULL);
JS_FreeValue(context, message);
}
}
typedef struct _tf_ssb_connection_send_history_stream_t
{
int32_t request_number;
char author[k_id_base64_len];
int64_t sequence;
bool keys;
bool live;
} tf_ssb_connection_send_history_stream_t;
static void _tf_ssb_connection_send_history_stream_callback(tf_ssb_connection_t* connection, void* user_data)
{
tf_ssb_connection_send_history_stream_t* request = user_data;
if (tf_ssb_connection_is_connected(connection))
{
_tf_ssb_connection_send_history_stream_internal(connection, request->request_number, request->author, request->sequence, request->keys, request->live);
}
tf_free(request);
}
static void _tf_ssb_connection_send_history_stream_internal(tf_ssb_connection_t* connection, int32_t request_number, const char* author, int64_t sequence, bool keys, bool live)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
sqlite3* db = tf_ssb_acquire_db_reader(ssb);
sqlite3_stmt* statement;
const int k_max = 32;
int64_t max_sequence_seen = 0;
if (sqlite3_prepare(db, "SELECT previous, author, id, sequence, timestamp, hash, content, signature, sequence_before_author FROM messages WHERE author = ?1 AND sequence >= ?2 AND sequence < ?3 ORDER BY sequence", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, author, -1, NULL) == SQLITE_OK &&
sqlite3_bind_int64(statement, 2, sequence) == SQLITE_OK &&
sqlite3_bind_int64(statement, 3, sequence + k_max) == SQLITE_OK)
{
while (sqlite3_step(statement) == SQLITE_ROW)
{
JSValue message = JS_UNDEFINED;
max_sequence_seen = sqlite3_column_int64(statement, 3);
JSValue formatted = tf_ssb_format_message(
context,
(const char*)sqlite3_column_text(statement, 0),
(const char*)sqlite3_column_text(statement, 1),
sqlite3_column_int64(statement, 3),
sqlite3_column_double(statement, 4),
(const char*)sqlite3_column_text(statement, 5),
(const char*)sqlite3_column_text(statement, 6),
(const char*)sqlite3_column_text(statement, 7),
sqlite3_column_int(statement, 8));
if (keys)
{
message = JS_NewObject(context);
JS_SetPropertyStr(context, message, "key", JS_NewString(context, (const char*)sqlite3_column_text(statement, 2)));
JS_SetPropertyStr(context, message, "value", formatted);
JS_SetPropertyStr(context, message, "timestamp", JS_NewString(context, (const char*)sqlite3_column_text(statement, 4)));
}
else
{
message = formatted;
}
tf_ssb_connection_rpc_send_json(connection, k_ssb_rpc_flag_stream, request_number, message, NULL, NULL, NULL);
JS_FreeValue(context, message);
}
}
sqlite3_finalize(statement);
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_reader(ssb, db);
if (max_sequence_seen == sequence + k_max - 1)
{
_tf_ssb_connection_send_history_stream(connection, request_number, author, max_sequence_seen + 1, keys, live);
}
else if (!live)
{
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json,
request_number,
(const uint8_t*)"false",
strlen("false"),
NULL,
NULL,
NULL);
}
}
static void _tf_ssb_connection_send_history_stream(tf_ssb_connection_t* connection, int32_t request_number, const char* author, int64_t sequence, bool keys, bool live)
{
tf_ssb_connection_send_history_stream_t* async = tf_malloc(sizeof(tf_ssb_connection_send_history_stream_t));
*async = (tf_ssb_connection_send_history_stream_t)
{
.request_number = request_number,
.sequence = sequence,
.keys = keys,
.live = live,
};
snprintf(async->author, sizeof(async->author), "%s", author);
tf_ssb_connection_schedule_idle(connection, _tf_ssb_connection_send_history_stream_callback, async);
}
static void _tf_ssb_rpc_createHistoryStream(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue arg_array = JS_GetPropertyStr(context, args, "args");
JSValue arg = JS_GetPropertyUint32(context, arg_array, 0);
if (JS_IsUndefined(arg))
{
tf_ssb_connection_rpc_send_error(connection, flags, -request_number, "Missing request.args in createHistoryStream.");
}
JSValue id = JS_GetPropertyStr(context, arg, "id");
JSValue seq = JS_GetPropertyStr(context, arg, "seq");
JSValue keys = JS_GetPropertyStr(context, arg, "keys");
JSValue live = JS_GetPropertyStr(context, arg, "live");
bool is_keys = JS_IsUndefined(keys) || JS_ToBool(context, keys) > 0;
bool is_live = JS_ToBool(context, live) > 0;
int64_t sequence = 0;
JS_ToInt64(context, &sequence, seq);
const char* author = JS_ToCString(context, id);
_tf_ssb_connection_send_history_stream(connection, -request_number, author, sequence, is_keys, is_live);
if (is_live)
{
tf_ssb_connection_add_new_message_request(connection, author, -request_number, is_keys);
}
JS_FreeCString(context, author);
JS_FreeValue(context, id);
JS_FreeValue(context, seq);
JS_FreeValue(context, keys);
JS_FreeValue(context, arg);
JS_FreeValue(context, arg_array);
}
static void _tf_ssb_rpc_ebt_replicate_send_clock(tf_ssb_connection_t* connection, int32_t request_number, JSValue message)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue full_clock = JS_NewObject(context);
/* Ask for every identity we know is being followed from local accounts. */
const char** visible = tf_ssb_db_get_all_visible_identities(ssb, 2);
for (int i = 0; visible[i]; i++)
{
int64_t sequence = 0;
tf_ssb_db_get_latest_message_by_author(ssb, visible[i], &sequence, NULL, 0);
JS_SetPropertyStr(context, full_clock, visible[i], JS_NewInt64(context, sequence == -1 ? -1 : (sequence << 1)));
}
tf_free(visible);
/* Ask about the incoming connection, too. */
char id[k_id_base64_len] = "";
if (tf_ssb_connection_get_id(connection, id, sizeof(id)))
{
JSValue in_clock = JS_GetPropertyStr(context, full_clock, id);
if (JS_IsUndefined(in_clock))
{
int64_t sequence = 0;
tf_ssb_db_get_latest_message_by_author(ssb, id, &sequence, NULL, 0);
JS_SetPropertyStr(context, full_clock, id, JS_NewInt64(context, sequence == -1 ? -1 : (sequence << 1)));
}
JS_FreeValue(context, in_clock);
}
/* Also respond with what we know about all requested identities. */
if (!JS_IsUndefined(message))
{
JSPropertyEnum* ptab;
uint32_t plen;
JS_GetOwnPropertyNames(context, &ptab, &plen, message, JS_GPN_STRING_MASK);
for (uint32_t i = 0; i < plen; ++i)
{
JSValue in_clock = JS_GetProperty(context, full_clock, ptab[i].atom);
if (JS_IsUndefined(in_clock))
{
JSValue key = JS_AtomToString(context, ptab[i].atom);
const char* key_string = JS_ToCString(context, key);
if (key_string)
{
int64_t sequence = -1;
tf_ssb_db_get_latest_message_by_author(ssb, key_string, &sequence, NULL, 0);
JS_SetPropertyStr(context, full_clock, key_string, JS_NewInt64(context, sequence == -1 ? -1 : (sequence << 1)));
}
JS_FreeCString(context, key_string);
JS_FreeValue(context, key);
}
}
for (uint32_t i = 0; i < plen; ++i)
{
JS_FreeAtom(context, ptab[i].atom);
}
js_free(context, ptab);
}
tf_ssb_connection_rpc_send_json(connection, k_ssb_rpc_flag_stream, -request_number, full_clock, NULL, NULL, NULL);
JS_FreeValue(context, full_clock);
}
static void _tf_ssb_rpc_ebt_replicate_send_messages(tf_ssb_connection_t* connection, JSValue message)
{
if (JS_IsUndefined(message))
{
return;
}
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSPropertyEnum* ptab = NULL;
uint32_t plen = 0;
JS_GetOwnPropertyNames(context, &ptab, &plen, message, JS_GPN_STRING_MASK);
for (uint32_t i = 0; i < plen; ++i)
{
JSValue in_clock = JS_GetProperty(context, message, ptab[i].atom);
if (!JS_IsUndefined(in_clock))
{
JSValue key = JS_AtomToString(context, ptab[i].atom);
int64_t sequence = -1;
JS_ToInt64(context, &sequence, in_clock);
const char* author = JS_ToCString(context, key);
if (sequence >= 0 && (sequence & 1) == 0)
{
int32_t request_number = tf_ssb_connection_get_ebt_request_number(connection);
_tf_ssb_connection_send_history_stream(connection, request_number, author, sequence >> 1, false, true);
tf_ssb_connection_add_new_message_request(connection, author, request_number, false);
}
else
{
tf_ssb_connection_remove_new_message_request(connection, author);
}
JS_FreeCString(context, author);
JS_FreeValue(context, key);
}
JS_FreeValue(context, in_clock);
}
for (uint32_t i = 0; i < plen; ++i)
{
JS_FreeAtom(context, ptab[i].atom);
}
js_free(context, ptab);
}
static void _tf_ssb_rpc_ebt_replicate(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
if (_is_error(context, args))
{
/* TODO: Send createHistoryStream. */
return;
}
if (!tf_ssb_connection_get_ebt_request_number(connection))
{
tf_ssb_connection_set_ebt_request_number(connection, -request_number);
}
JSValue author = JS_GetPropertyStr(context, args, "author");
JSValue name = JS_GetPropertyStr(context, args, "name");
JSValue in_clock = JS_IsUndefined(name) ? args : JS_UNDEFINED;
if (!JS_IsUndefined(author))
{
/* Looks like a message. */
tf_ssb_verify_strip_and_store_message(ssb, args, NULL, NULL);
}
else
{
/* EBT clock. */
tf_ssb_connection_set_ebt_send_clock(connection, args);
if (!tf_ssb_connection_get_sent_clock(connection))
{
_tf_ssb_rpc_ebt_replicate_send_clock(connection, request_number, in_clock);
tf_ssb_connection_set_sent_clock(connection, true);
}
_tf_ssb_rpc_ebt_replicate_send_messages(connection, in_clock);
}
JS_FreeValue(context, name);
JS_FreeValue(context, author);
}
static void _tf_ssb_rpc_ebt_replicate_client(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
_tf_ssb_rpc_ebt_replicate(connection, flags, request_number, args, message, size, user_data);
}
static void _tf_ssb_rpc_send_ebt_replicate(tf_ssb_connection_t* connection)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "ebt"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "replicate"));
JS_SetPropertyStr(context, message, "name", name);
JSValue arg = JS_NewObject(context);
JS_SetPropertyStr(context, arg, "version", JS_NewInt32(context, 3));
JS_SetPropertyStr(context, arg, "format", JS_NewString(context, "classic"));
JSValue args = JS_NewArray(context);
JS_SetPropertyUint32(context, args, 0, arg);
JS_SetPropertyStr(context, message, "args", args);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "duplex"));
int32_t request_number = tf_ssb_connection_next_request_number(connection);
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
request_number,
message,
_tf_ssb_rpc_ebt_replicate_client,
NULL,
NULL);
if (!tf_ssb_connection_get_ebt_request_number(connection))
{
tf_ssb_connection_set_ebt_request_number(connection, request_number);
}
JS_FreeValue(context, message);
}
static void _tf_ssb_rpc_ebt_replicate_server(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
if (flags & k_ssb_rpc_flag_end_error)
{
return;
}
_tf_ssb_rpc_ebt_replicate(connection, flags, request_number, args, message, size, user_data);
tf_ssb_connection_add_request(connection, -request_number, _tf_ssb_rpc_ebt_replicate, NULL, NULL, NULL);
}
static void _tf_ssb_rpc_connections_changed_callback(tf_ssb_t* ssb, tf_ssb_change_t change, tf_ssb_connection_t* connection, void* user_data)
{
JSContext* context = tf_ssb_get_context(ssb);
if (change == k_tf_ssb_change_connect)
{
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "blobs"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "createWants"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "source"));
JS_SetPropertyStr(context, message, "args", JS_NewArray(context));
tf_ssb_connection_rpc_send_json(
connection,
k_ssb_rpc_flag_stream,
tf_ssb_connection_next_request_number(connection),
message,
_tf_ssb_rpc_connection_blobs_createWants_callback,
NULL,
NULL);
JS_FreeValue(context, message);
if (tf_ssb_connection_is_client(connection))
{
message = JS_NewObject(context);
name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "tunnel"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "isRoom"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "args", JS_NewArray(context));
tf_ssb_connection_rpc_send_json(
connection,
0,
tf_ssb_connection_next_request_number(connection),
message,
_tf_ssb_rpc_connection_tunnel_isRoom_callback,
NULL,
NULL);
JS_FreeValue(context, message);
_tf_ssb_rpc_send_ebt_replicate(connection);
}
}
else if (change == k_tf_ssb_change_remove)
{
tf_ssb_remove_blob_want_added_callback(ssb, _tf_ssb_rpc_blob_wants_added_callback, connection);
char id[k_id_base64_len] = "";
if (tf_ssb_connection_get_id(connection, id, sizeof(id)))
{
JSValue left = JS_NewObject(context);
JS_SetPropertyStr(context, left, "type", JS_NewString(context, "left"));
JS_SetPropertyStr(context, left, "id", JS_NewString(context, id));
tf_ssb_connection_t* connections[1024];
int count = tf_ssb_get_connections(ssb, connections, _countof(connections));
for (int i = 0; i < count; i++)
{
if (tf_ssb_connection_is_attendant(connections[i]))
{
tf_ssb_connection_rpc_send_json(
connections[i],
k_ssb_rpc_flag_stream,
-tf_ssb_connection_get_attendant_request_number(connections[i]),
left,
NULL,
NULL,
NULL);
}
}
JS_FreeValue(context, left);
}
}
}
static void _tf_ssb_rpc_delete_blobs_work(uv_work_t* work)
{
tf_ssb_t* ssb = work->data;
int64_t age = _get_global_setting_int64(ssb, "blob_expire_age_seconds", -1);
if (age <= 0)
{
return;
}
sqlite3* db = tf_ssb_acquire_db_writer(ssb);
sqlite3_stmt* statement;
int64_t now = (int64_t)time(NULL) * 1000ULL;
int64_t timestamp = now - age * 1000ULL;
const int k_limit = 256;
bool deleted = false;
if (sqlite3_prepare(db,
"DELETE FROM blobs WHERE blobs.id IN ("
" SELECT blobs.id FROM blobs "
" JOIN messages_refs ON blobs.id = messages_refs.ref "
" JOIN messages ON messages.id = messages_refs.message "
" GROUP BY blobs.id HAVING MAX(messages.timestamp) < ? LIMIT ?)", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_int64(statement, 1, timestamp) == SQLITE_OK &&
sqlite3_bind_int(statement, 2, k_limit) == SQLITE_OK)
{
int r = sqlite3_step(statement);
if (r != SQLITE_DONE)
{
tf_printf("_tf_ssb_rpc_delete_blobs_work: %s\n", sqlite3_errmsg(db));
}
else
{
tf_printf("_tf_ssb_rpc_delete_blobs_work: %d rows\n", sqlite3_changes(db));
}
deleted = sqlite3_changes(db) != 0;
}
}
else
{
tf_printf("prepare failed: %s\n", sqlite3_errmsg(db));
}
tf_ssb_release_db_writer(ssb, db);
if (deleted)
{
_tf_ssb_rpc_start_delete_blobs(ssb, 60 * 1000);
}
}
static void _tf_ssb_rpc_delete_blobs_after_work(uv_work_t* work, int status)
{
tf_free(work);
}
static void _tf_ssb_rpc_timer_on_close(uv_handle_t* handle)
{
tf_free(handle);
}
static void _tf_ssb_rpc_start_delete_timer(uv_timer_t* timer)
{
tf_ssb_t* ssb = timer->data;
uv_work_t* work = tf_malloc(sizeof(uv_work_t));
*work = (uv_work_t) { .data = ssb };
int r = uv_queue_work(tf_ssb_get_loop(ssb), work, _tf_ssb_rpc_delete_blobs_work, _tf_ssb_rpc_delete_blobs_after_work);
if (r)
{
tf_printf("uv_queue_work: %s\n", uv_strerror(r));
tf_free(work);
}
uv_close((uv_handle_t*)timer, _tf_ssb_rpc_timer_on_close);
}
static void _tf_ssb_rpc_start_delete_blobs(tf_ssb_t* ssb, int delay_ms)
{
tf_printf("will delete more blobs in %d ms\n", delay_ms);
uv_timer_t* timer = tf_malloc(sizeof(uv_timer_t));
*timer = (uv_timer_t) { .data = ssb };
uv_timer_init(tf_ssb_get_loop(ssb), timer);
uv_timer_start(timer, _tf_ssb_rpc_start_delete_timer, delay_ms, 0);
}
void tf_ssb_rpc_register(tf_ssb_t* ssb)
{
tf_ssb_add_connections_changed_callback(ssb, _tf_ssb_rpc_connections_changed_callback, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "gossip", "ping", NULL }, _tf_ssb_rpc_gossip_ping, NULL, NULL); /* DUPLEX */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "get", NULL }, _tf_ssb_rpc_blobs_get, NULL, NULL); /* SOURCE */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "has", NULL }, _tf_ssb_rpc_blobs_has, NULL, NULL); /* ASYNC */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "createWants", NULL }, _tf_ssb_rpc_blobs_createWants, NULL, NULL); /* SOURCE */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "tunnel", "connect", NULL }, _tf_ssb_rpc_tunnel_connect, NULL, NULL); /* DUPLEX */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "tunnel", "isRoom", NULL }, _tf_ssb_rpc_room_meta, NULL, NULL); /* FAKE-ASYNC */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "room", "metadata", NULL }, _tf_ssb_rpc_room_meta, NULL, NULL); /* ASYNC */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "room", "attendants", NULL }, _tf_ssb_rpc_room_attendants, NULL, NULL); /* SOURCE */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "createHistoryStream", NULL }, _tf_ssb_rpc_createHistoryStream, NULL, NULL); /* SOURCE */
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "ebt", "replicate", NULL }, _tf_ssb_rpc_ebt_replicate_server, NULL, NULL); /* DUPLEX */
_tf_ssb_rpc_start_delete_blobs(ssb, 0);
}