cory/tildefriends
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Some quick http refactors to make websockets less magic.

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git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4705 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
Cory McWilliams 2023-12-30 16:29:16 +00:00
parent d556cbc835
commit b6a3923b27
5 changed files with 77 additions and 70 deletions
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2
core/core.js
View File

@ -954,6 +954,7 @@ function stringResponse(response, data) {
loadSettings().then(function() {
let httpd_impl = (tildefriends.args.httpdc ? httpdc : httpd);
httpd_impl.all("/login", auth.handler);
httpd_impl.registerSocketHandler("/app/socket", app.socket);
httpd_impl.all("", function(request, response) {
let match;
if (request.uri === "/" || request.uri === "") {
@ -1004,7 +1005,6 @@ loadSettings().then(function() {
return response.end(data);
}
});
httpd_impl.registerSocketHandler("/app/socket", app.socket);
httpd_impl.start(tildefriends.http_port);
}).catch(function(error) {
print('Failed to load settings.');

26
src/http.c
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@ -40,7 +40,6 @@ typedef struct _tf_http_connection_t
int headers_length;
bool headers_done;
int flags;
tf_http_callback_t* callback;
tf_http_request_t* request;
void* user_data;
@ -56,7 +55,6 @@ typedef struct _tf_http_connection_t
typedef struct _tf_http_handler_t
{
const char* pattern;
int flags;
tf_http_callback_t* callback;
void* user_data;
} tf_http_handler_t;
@ -103,14 +101,13 @@ void _http_allocate_buffer(uv_handle_t* handle, size_t suggestedSize, uv_buf_t*
}
}
bool _http_find_handler(tf_http_t* http, const char* path, int flags, tf_http_callback_t** out_callback, void** out_user_data)
bool _http_find_handler(tf_http_t* http, const char* path, tf_http_callback_t** out_callback, void** out_user_data)
{
for (int i = 0; i < http->handlers_count; i++)
{
if (http->handlers[i].flags == flags &&
(!http->handlers[i].pattern ||
if (!http->handlers[i].pattern ||
strcmp(path, http->handlers[i].pattern) == 0 ||
(strncmp(path, http->handlers[i].pattern, strlen(http->handlers[i].pattern)) == 0 && path[strlen(http->handlers[i].pattern)] == '/')))
(strncmp(path, http->handlers[i].pattern, strlen(http->handlers[i].pattern)) == 0 && path[strlen(http->handlers[i].pattern)] == '/'))
{
*out_callback = http->handlers[i].callback;
*out_user_data = http->handlers[i].user_data;
@ -271,10 +268,6 @@ static void _http_add_body_bytes(tf_http_connection_t* connection, const void* d
if (connection->body_length == connection->content_length)
{
if (connection->flags & k_tf_http_handler_flag_websocket)
{
connection->is_websocket = true;
}
tf_http_request_t* request = tf_malloc(sizeof(tf_http_request_t));
*request = (tf_http_request_t)
{
@ -282,7 +275,6 @@ static void _http_add_body_bytes(tf_http_connection_t* connection, const void* d
.phase = k_http_callback_phase_headers_received,
.method = connection->method,
.path = connection->path,
.flags = connection->flags,
.query = connection->query,
.body = connection->body,
.content_length = connection->content_length,
@ -367,9 +359,7 @@ static void _http_on_read(uv_stream_t* stream, ssize_t read_size, const uv_buf_t
connection->body = tf_malloc(connection->content_length);
}
int flags = _http_connection_get_header(connection, "upgrade") ? k_tf_http_handler_flag_websocket : 0;
connection->flags = flags;
if (!_http_find_handler(connection->http, connection->path, flags, &connection->callback, &connection->user_data) || !connection->callback)
if (!_http_find_handler(connection->http, connection->path, &connection->callback, &connection->user_data) || !connection->callback)
{
connection->callback = _http_builtin_404_handler;
}
@ -475,13 +465,12 @@ void tf_http_listen(tf_http_t* http, int port)
}
}
void tf_http_add_handler(tf_http_t* http, const char* pattern, int flags, tf_http_callback_t* callback, void* user_data)
void tf_http_add_handler(tf_http_t* http, const char* pattern, tf_http_callback_t* callback, void* user_data)
{
http->handlers = tf_realloc(http->handlers, sizeof(tf_http_handler_t) * (http->handlers_count + 1));
http->handlers[http->handlers_count++] = (tf_http_handler_t)
{
.pattern = tf_strdup(pattern),
.flags = flags,
.callback = callback,
.user_data = user_data,
};
@ -664,3 +653,8 @@ const char* tf_http_request_get_header(tf_http_request_t* request, const char* n
{
return _http_connection_get_header(request->connection, name);
}
void tf_http_request_websocket_upgrade(tf_http_request_t* request)
{
request->connection->is_websocket = true;
}

10
src/http.h
View File

@ -21,7 +21,6 @@ typedef struct _tf_http_request_t
tf_http_connection_t* connection;
const char* method;
const char* path;
int flags;
const char* query;
void* body;
size_t content_length;
@ -33,17 +32,11 @@ typedef struct _tf_http_request_t
int ref_count;
} tf_http_request_t;
typedef enum _tf_http_handler_flags_t
{
k_tf_http_handler_flag_none = 0,
k_tf_http_handler_flag_websocket = 1,
} tf_http_handler_flags_t;
typedef void (tf_http_callback_t)(tf_http_request_t* request);
tf_http_t* tf_http_create(uv_loop_t* loop);
void tf_http_listen(tf_http_t* http, int port);
void tf_http_add_handler(tf_http_t* http, const char* pattern, int flags, tf_http_callback_t* callback, void* user_data);
void tf_http_add_handler(tf_http_t* http, const char* pattern, tf_http_callback_t* callback, void* user_data);
void tf_http_respond(tf_http_request_t* request, int status, const char** headers, int headers_count, const void* body, size_t content_length);
size_t tf_http_get_body(const tf_http_request_t* request, const void** out_data);
void tf_http_destroy(tf_http_t* http);
@ -52,3 +45,4 @@ void tf_http_request_ref(tf_http_request_t* request);
void tf_http_request_release(tf_http_request_t* request);
const char* tf_http_request_get_header(tf_http_request_t* request, const char* name);
void tf_http_request_send(tf_http_request_t* request, const void* data, size_t size);
void tf_http_request_websocket_upgrade(tf_http_request_t* request);

105
src/httpd.js.c
View File

@ -162,44 +162,8 @@ static void _httpd_message_callback(tf_http_request_t* request, int op_code, con
JS_FreeValue(context, on_message);
}
static void _httpd_callback(tf_http_request_t* request)
static void _httpd_callback_internal(tf_http_request_t* request, bool is_websocket)
{
if (request->flags & k_tf_http_handler_flag_websocket)
{
const char* header_connection = tf_http_request_get_header(request, "connection");
const char* header_upgrade = tf_http_request_get_header(request, "upgrade");
const char* header_sec_websocket_key = tf_http_request_get_header(request, "sec-websocket-key");
if (header_connection &&
header_upgrade &&
header_sec_websocket_key &&
strstr(header_connection, "Upgrade") &&
strcasecmp(header_upgrade, "websocket") == 0)
{
static const char* k_magic = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
size_t key_length = strlen(header_sec_websocket_key);
size_t size = key_length + 36;
uint8_t* key_magic = alloca(size);
memcpy(key_magic, header_sec_websocket_key, key_length);
memcpy(key_magic + key_length, k_magic, 36);
uint8_t digest[20];
SHA1(key_magic, size, digest);
char key[41] = { 0 };
tf_base64_encode(digest, sizeof(digest), key, sizeof(key));
enum { k_headers_count = 4 };
const char* headers[k_headers_count * 2] =
{
"Upgrade", "websocket",
"Connection", "Upgrade",
"Sec-WebSocket-Accept", key,
"Sec-WebSocket-Version", "13",
};
bool send_version =
!tf_http_request_get_header(request, "sec-websocket-version") ||
strcmp(tf_http_request_get_header(request, "sec-websocket-version"), "13") != 0;
tf_http_respond(request, 101, headers, send_version ? k_headers_count : (k_headers_count - 1), NULL, 0);
}
}
http_handler_data_t* data = request->user_data;
JSContext* context = data->context;
JSValue request_object = JS_NewObject(context);
@ -238,11 +202,66 @@ static void _httpd_callback(tf_http_request_t* request)
JSValue response = JS_Call(context, data->callback, JS_UNDEFINED, 2, args);
tf_util_report_error(context, response);
JS_FreeValue(context, request_object);
//JS_FreeValue(context, response_object);
JS_FreeValue(context, response);
request->on_message = _httpd_message_callback;
request->context = context;
request->user_data = JS_VALUE_GET_PTR(response_object);
if (is_websocket)
{
request->on_message = _httpd_message_callback;
request->context = context;
request->user_data = JS_VALUE_GET_PTR(response_object);
}
else
{
JS_FreeValue(context, response_object);
}
}
static void _httpd_callback(tf_http_request_t* request)
{
_httpd_callback_internal(request, false);
}
static void _httpd_websocket_callback(tf_http_request_t* request)
{
const char* header_connection = tf_http_request_get_header(request, "connection");
const char* header_upgrade = tf_http_request_get_header(request, "upgrade");
const char* header_sec_websocket_key = tf_http_request_get_header(request, "sec-websocket-key");
if (header_connection &&
header_upgrade &&
header_sec_websocket_key &&
strstr(header_connection, "Upgrade") &&
strcasecmp(header_upgrade, "websocket") == 0)
{
static const char* k_magic = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
size_t key_length = strlen(header_sec_websocket_key);
size_t size = key_length + 36;
uint8_t* key_magic = alloca(size);
memcpy(key_magic, header_sec_websocket_key, key_length);
memcpy(key_magic + key_length, k_magic, 36);
uint8_t digest[20];
SHA1(key_magic, size, digest);
char key[41] = { 0 };
tf_base64_encode(digest, sizeof(digest), key, sizeof(key));
enum { k_headers_count = 4 };
const char* headers[k_headers_count * 2] =
{
"Upgrade", "websocket",
"Connection", "Upgrade",
"Sec-WebSocket-Accept", key,
"Sec-WebSocket-Version", "13",
};
bool send_version =
!tf_http_request_get_header(request, "sec-websocket-version") ||
strcmp(tf_http_request_get_header(request, "sec-websocket-version"), "13") != 0;
tf_http_request_websocket_upgrade(request);
tf_http_respond(request, 101, headers, send_version ? k_headers_count : (k_headers_count - 1), NULL, 0);
}
else
{
tf_http_respond(request, 400, NULL, 0, NULL, 0);
}
_httpd_callback_internal(request, true);
}
static JSValue _httpd_all(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
@ -251,7 +270,7 @@ static JSValue _httpd_all(JSContext* context, JSValueConst this_val, int argc, J
const char* pattern = JS_ToCString(context, argv[0]);
http_handler_data_t* data = tf_malloc(sizeof(http_handler_data_t));
*data = (http_handler_data_t) { .context = context, .callback = JS_DupValue(context, argv[1]) };
tf_http_add_handler(http, pattern, k_tf_http_handler_flag_none, _httpd_callback, data);
tf_http_add_handler(http, pattern, _httpd_callback, data);
JS_FreeCString(context, pattern);
return JS_UNDEFINED;
}
@ -262,7 +281,7 @@ static JSValue _httpd_register_socket_handler(JSContext* context, JSValueConst t
const char* pattern = JS_ToCString(context, argv[0]);
http_handler_data_t* data = tf_malloc(sizeof(http_handler_data_t));
*data = (http_handler_data_t) { .context = context, .callback = JS_DupValue(context, argv[1]) };
tf_http_add_handler(http, pattern, k_tf_http_handler_flag_websocket, _httpd_callback, data);
tf_http_add_handler(http, pattern, _httpd_websocket_callback, data);
JS_FreeCString(context, pattern);
return JS_UNDEFINED;
}

4
src/tests.c
View File

@ -737,8 +737,8 @@ static void _test_http(const tf_test_options_t* options)
uv_loop_t loop = { 0 };
uv_loop_init(&loop);
tf_http_t* http = tf_http_create(&loop);
tf_http_add_handler(http, "/hello", k_tf_http_handler_flag_none, _test_http_handler, NULL);
tf_http_add_handler(http, "/post", k_tf_http_handler_flag_none, _test_http_handler_post, NULL);
tf_http_add_handler(http, "/hello", _test_http_handler, NULL);
tf_http_add_handler(http, "/post", _test_http_handler_post, NULL);
tf_http_listen(http, 23456);
test_http_t test = { .loop = &loop };