Case insensitivity and basic AP user

This commit is contained in:
jaina heartles 2022-04-03 20:36:32 -07:00
parent 5fbb1b480b
commit 266c18453a

View file

@ -2,10 +2,88 @@ const std = @import("std");
pub const io_mode = .evented;
const HeaderMap = std.StringHashMap([]const u8);
const Reader = std.net.Stream.Reader;
const Writer = std.net.Stream.Writer;
const case_insensitive_utf8 = struct {
const Hash = std.hash.Wyhash;
const View = std.unicode.Utf8View;
const toLower = std.ascii.toLower;
const isAscii = std.ascii.isASCII;
const seed = 1;
pub fn hash(str: []const u8) u64 {
// fallback to regular hash on invalid utf8
const view = View.init(str) catch return Hash.hash(seed, str);
var iter = view.iterator();
var h = Hash.init(seed);
var it = iter.nextCodepointSlice();
while (it != null) : (it = iter.nextCodepointSlice()) {
if (it.?.len == 1 and isAscii(it.?[0])) {
const ch = [1]u8{toLower(it.?[0])};
h.update(&ch);
} else {
h.update(it.?);
}
}
return h.final();
}
pub fn eql(a: []const u8, b: []const u8) bool {
if (a.len != b.len) return false;
const va = View.init(a) catch return std.mem.eql(u8, a, b);
const vb = View.init(b) catch return false;
var iter_a = va.iterator();
var iter_b = vb.iterator();
var it_a = iter_a.nextCodepointSlice();
var it_b = iter_b.nextCodepointSlice();
while (it_a != null and it_b != null) : ({
it_a = iter_a.nextCodepointSlice();
it_b = iter_b.nextCodepointSlice();
}) {
if (it_a.?.len != it_b.?.len) return false;
if (it_a.?.len == 1) {
if (isAscii(it_a.?[0]) and isAscii(it_b.?[0])) {
const ch_a = toLower(it_a.?[0]);
const ch_b = toLower(it_b.?[0]);
if (ch_a != ch_b) return false;
} else if (it_a.?[0] != it_b.?[0]) return false;
} else if (!std.mem.eql(u8, it_a.?, it_b.?)) return false;
}
return it_a == null and it_b == null;
}
pub fn lowerInPlace(str: []u8) void {
const view = View.init(str) catch return;
var iter = view.iterator();
var it = iter.nextCodepointSlice();
while (it != null) : (it = iter.nextCodepointSlice()) {
if (isAscii(it.?[0])) it.?[0] = toLower(it.?[0]);
}
}
};
const HeaderMap = std.HashMap([]const u8, []const u8, struct {
pub fn eql(_: @This(), a: []const u8, b: []const u8) bool {
return case_insensitive_utf8.eql(a, b);
}
pub fn hash(_: @This(), str: []const u8) u64 {
return case_insensitive_utf8.hash(str);
}
}, std.hash_map.default_max_load_percentage);
fn handleBadRequest(writer: Writer) !void {
std.log.info("400 Bad Request", .{});
try writer.writeAll("HTTP/1.1 400 Bad Request");
@ -32,14 +110,6 @@ const Method = enum {
//TRACE,
};
fn areStringsEqual(lhs: []const u8, rhs: []const u8) bool {
if (lhs.len != rhs.len) return false;
for (lhs) |_, i| {
if (lhs[i] != rhs[i]) return false;
}
return true;
}
fn parseHttpMethod(reader: Reader) !Method {
var buf: [8]u8 = undefined;
const str = reader.readUntilDelimiter(&buf, ' ') catch |err| switch (err) {
@ -48,7 +118,7 @@ fn parseHttpMethod(reader: Reader) !Method {
};
inline for (@typeInfo(Method).Enum.fields) |method| {
if (areStringsEqual(method.name, str)) {
if (std.mem.eql(u8, method.name, str)) {
return @intToEnum(Method, method.value);
}
}
@ -63,7 +133,7 @@ fn checkProto(reader: Reader) !void {
else => return err,
};
if (!areStringsEqual(proto, "HTTP")) {
if (!std.mem.eql(u8, proto, "HTTP")) {
return error.UnknownProtocol;
}
@ -104,7 +174,8 @@ fn parseHeaders(allocator: std.mem.Allocator, reader: Reader) !HeaderMap {
// TODO: handle multi-line headers
const name = extractHeaderName(line) orelse continue;
const value = line[name.len + 1 + 1 ..];
const value_end = if (line[line.len - 1] == '\r') line.len - 1 else line.len;
const value = line[name.len + 1 + 1 .. value_end];
if (name.len == 0 or value.len == 0) return error.BadRequest;
@ -116,11 +187,6 @@ fn parseHeaders(allocator: std.mem.Allocator, reader: Reader) !HeaderMap {
@memcpy(name_alloc.ptr, name.ptr, name.len);
@memcpy(value_alloc.ptr, value.ptr, value.len);
for (name_alloc) |*ch| {
//TODO: utf8
ch.* = std.ascii.toLower(ch.*);
}
try map.put(name_alloc, value_alloc);
}
@ -163,15 +229,15 @@ fn handleHttpRequest(reader: Reader, writer: Writer) anyerror!void {
const headers = try parseHeaders(allocator, reader);
const has_body = (headers.get("content-length") orelse headers.get("transfer-encoding")) != null;
const has_body = (headers.get("Content-Length") orelse headers.get("Transfer-Encoding")) != null;
const tfer_encoding = headers.get("transfer-encoding");
if (tfer_encoding != null and !areStringsEqual(tfer_encoding.?, "identity")) {
const tfer_encoding = headers.get("Transfer-Encoding");
if (tfer_encoding != null and !std.mem.eql(u8, tfer_encoding.?, "identity")) {
return error.UnsupportedMediaType;
}
const encoding = headers.get("content-encoding");
if (encoding != null and !areStringsEqual(encoding.?, "identity")) {
const encoding = headers.get("Content-Encoding");
if (encoding != null and !std.mem.eql(u8, encoding.?, "identity")) {
return error.UnsupportedMediaType;
}
@ -224,6 +290,7 @@ const Context = struct {
return switch (status) {
200 => "OK",
204 => "No Content",
404 => "Not Found",
else => "",
};
}
@ -245,7 +312,7 @@ const Context = struct {
try self.openInternal(status);
if (body.len != 0) {
try self.writer.print("Content-Length: {}\r\n", .{body.len});
if (self.headers.get("content-type") == null) {
if (self.headers.get("Content-Type") == null) {
try self.writer.writeAll("Content-Type: application/octet-stream\r\n");
}
}
@ -255,6 +322,10 @@ const Context = struct {
try self.writer.writeAll(body);
}
}
pub fn statusOnly(self: *Response, status: u16) !void {
try self.openInternal(status);
}
};
request: Request,
@ -360,7 +431,7 @@ const Route = struct {
const slice = path[segment_start..index];
const match = switch (seg) {
.literal => |str| areStringsEqual(slice, str),
.literal => |str| case_insensitive_utf8.eql(slice, str),
.param => true,
};
@ -387,7 +458,7 @@ const Route = struct {
switch (seg) {
.param => |param| {
if (areStringsEqual(param, name)) {
if (std.mem.eql(u8, param, name)) {
return slice.?;
}
},
@ -426,26 +497,53 @@ fn routeRequest(ctx: *Context) !void {
const routes = [_]Route{
Route.from(.GET, "/", staticString("Index Page")),
Route.from(.GET, "/test", staticString("some test value idfk")),
Route.from(.GET, "/objs/:id/get", getObjIdGet),
Route.from(.POST, "/form/submit", staticString("form submit accepted")),
Route.from(.GET, "/abc", staticString("abc")),
Route.from(.GET, "/user/:id", getUser),
};
const this_scheme = "http";
const this_host = "localhost:8080";
const account = .{
.id = "abc123",
.handle = "testacct",
.host = this_host,
};
fn getUser(ctx: *Context) anyerror!void {
const id = ctx.request.arg("id");
const host = ctx.request.headers.get("host");
if (host == null) {
try ctx.response.statusOnly(400);
return;
}
if (!std.mem.eql(u8, account.id, id) or
!std.mem.eql(u8, account.host, ctx.request.headers.get("host").?))
{
try ctx.response.statusOnly(404);
return;
}
try ctx.response.headers.put("Content-Type", "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"");
var writer = try ctx.response.open(200);
try writer.writeAll("{\"type\":\"Person\",");
try writer.print("\"id\":\"{s}://{s}/user/{s}\",", .{ this_scheme, this_host, id });
try writer.print("\"preferredUsername\":\"{s}\"", .{account.handle});
try writer.writeAll("}");
}
fn staticString(comptime str: []const u8) Route.Handler {
return (struct {
fn func(ctx: *Context) anyerror!void {
try ctx.response.headers.put("content-type", "text/plain");
try ctx.response.headers.put("Content-Type", "text/plain");
try ctx.response.write(200, str);
}
}).func;
}
fn getObjIdGet(ctx: *Context) anyerror!void {
try ctx.response.headers.put("content-type", "text/plain");
var writer = try ctx.response.open(200);
try writer.print("object id {s}", .{ctx.request.arg("id")});
}
pub fn main() anyerror!void {
var srv = std.net.StreamServer.init(.{ .reuse_address = true });
defer srv.deinit();