forked from geneb/ScarletDME
/
op_secure_socket.zig
445 lines (361 loc) · 12 KB
/
op_secure_socket.zig
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const std = @import("std");
const qm = @cImport({
@cInclude("qm.h");
});
var allocator = std.heap.c_allocator;
fn qm_pop(n: i32) void {
var i: i32 = 0;
while (i < n) : (i = i + 1) {
qm.k_dismiss();
}
}
fn qm_error() void {
qm.process.status = 2;
qm.e_stack.*.type = qm.INTEGER;
qm.e_stack.*.data.value = 0;
qm.e_stack = qm.e_stack + 1;
}
export fn op_secure_server_socket() void {
qm.process.status = 0;
var ok: bool = undefined;
var key_path: [1025]u8 = std.mem.zeroes([1025:0]u8);
var certificate_path: [1025]u8 = std.mem.zeroes([1025:0]u8);
var flags: i32 = undefined;
var port_number: [31]u8 = std.mem.zeroes([31:0]u8);
var ip_addr: [81]u8 = std.mem.zeroes([81:0]u8);
const arg5 = qm.e_stack - 1;
ok = qm.k_get_c_string(arg5, &key_path, 1024) > 0;
if (!ok) {
std.debug.print("Invalid string for key.\n", .{});
qm_pop(5);
qm_error();
return;
}
const arg4 = qm.e_stack - 2;
ok = qm.k_get_c_string(arg4, &certificate_path, 1024) > 0;
if (!ok) {
std.debug.print("Invalid string for certificate.\n", .{});
qm_pop(5);
qm_error();
return;
}
const arg3 = qm.e_stack - 3;
qm.k_get_int(arg3);
flags = arg3.*.data.value;
const arg2 = qm.e_stack - 4;
ok = qm.k_get_c_string(arg2, &port_number, 30) > 0;
if (!ok) {
std.debug.print("Invalid string for port.{any}\n", .{port_number});
qm_pop(5);
qm_error();
return;
}
const port = std.fmt.parseInt(i32, std.mem.sliceTo(&port_number,0), 10) catch {
std.debug.print("Invalid parse int for port. - {s}\n", .{port_number});
qm_pop(5);
qm_error();
return;
};
_ = port;
const arg1 = qm.e_stack - 5;
ok = qm.k_get_c_string(arg1, &ip_addr, 80) >= 0;
if (std.mem.sliceTo(&ip_addr,0).len == 0) {
@memcpy(ip_addr[0..7],"0.0.0.0");
}
if (!ok) {
std.debug.print("Invalid string for ip address.\n", .{});
qm_pop(5);
qm_error();
return;
}
var ret: i32 = undefined;
// Initalize SSL
var listen_fd = allocator.create(qm.mbedtls_net_context) catch {
std.debug.print("Failed to allocate server socket.\n", .{});
qm_pop(5);
qm_error();
return;
};
var entropy = allocator.create(qm.mbedtls_entropy_context) catch {
std.debug.print("Failed to allocate entropy context.\n", .{});
qm_pop(5);
qm_error();
return;
};
var ctr_drbg = allocator.create(qm.mbedtls_ctr_drbg_context) catch {
std.debug.print("Failed to allocate ctr_drbg.\n", .{});
qm_pop(5);
qm_error();
return;
};
var ssl = allocator.create(qm.mbedtls_ssl_context) catch {
std.debug.print("Failed to allocate ssl context.\n", .{});
qm_pop(5);
qm_error();
return;
};
var conf_ctx = qm.zmbedtls_ssl_config_alloc();
var conf: *qm.mbedtls_ssl_config = @ptrCast(@alignCast(conf_ctx));
var srvcrt = allocator.create(qm.mbedtls_x509_crt) catch {
std.debug.print("Failed to allocate server certificate.\n", .{});
qm_pop(5);
qm_error();
return;
};
var pkey = allocator.create(qm.mbedtls_pk_context) catch {
std.debug.print("Failed to allocate pkey.\n", .{});
qm_pop(5);
qm_error();
return;
};
var cache = allocator.create(qm.mbedtls_ssl_cache_context) catch {
std.debug.print("Failed to allocate ssl cache.\n", .{});
qm_pop(5);
qm_error();
return;
};
qm.mbedtls_net_init(listen_fd);
qm.mbedtls_entropy_init(entropy);
qm.mbedtls_ctr_drbg_init(ctr_drbg);
qm.mbedtls_ssl_init(ssl);
qm.zmbedtls_ssl_config_init(conf);
qm.mbedtls_x509_crt_init(srvcrt);
qm.mbedtls_pk_init(pkey);
qm.mbedtls_ssl_cache_init(cache);
// Seed
const pers = "snPgPTh7iVLQrok6EfZA";
ret = qm.mbedtls_ctr_drbg_seed(ctr_drbg, qm.mbedtls_entropy_func, entropy, pers, pers.len);
if (ret != 0) {
std.debug.print("Seed Failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
// Set Certificate
ret = qm.mbedtls_x509_crt_parse_file(srvcrt, &certificate_path);
if (ret != 0) {
std.debug.print("Parsing Certificate Failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
// Set Key
ret = qm.mbedtls_pk_parse_keyfile(pkey, &key_path, 0);
if (ret != 0) {
std.debug.print("Parsing Key Failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
// Create Socket
ret = qm.mbedtls_net_bind(listen_fd, &ip_addr, &port_number, qm.MBEDTLS_NET_PROTO_TCP);
if (ret != 0) {
std.debug.print("Bind Failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
ret = qm.mbedtls_ssl_config_defaults(conf, qm.MBEDTLS_SSL_IS_SERVER, qm.MBEDTLS_SSL_TRANSPORT_STREAM, qm.MBEDTLS_SSL_PRESET_DEFAULT);
if (ret != 0) {
std.debug.print("SSL Defaults failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
qm.mbedtls_ssl_conf_rng(conf, qm.mbedtls_ctr_drbg_random, ctr_drbg);
qm.mbedtls_ssl_conf_session_cache(conf, cache, qm.mbedtls_ssl_cache_get, qm.mbedtls_ssl_cache_set);
qm.mbedtls_ssl_conf_ca_chain(conf, srvcrt.next, null);
ret = qm.mbedtls_ssl_conf_own_cert(conf, srvcrt, pkey);
if (ret != 0) {
std.debug.print("SSL Conf Own Cert Returned: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
ret = qm.mbedtls_ssl_setup(ssl, conf);
if (ret != 0) {
std.debug.print("SSL Setup Failed: {}\n", .{ret});
qm_pop(5);
qm_error();
return;
}
var socket: *qm.SOCKVAR = allocator.create(qm.SOCKVAR) catch {
std.debug.print("Failed to allocate server SOCKVAR.\n", .{});
qm_pop(5);
qm_error();
return;
};
socket.server = 1;
socket.fd = listen_fd;
socket.entropy = entropy;
socket.ctr_drbg = ctr_drbg;
socket.ssl = ssl;
socket.conf = conf;
socket.srvcrt = srvcrt;
socket.pkey = pkey;
socket.cache = cache;
qm_pop(5);
qm.e_stack.*.type = qm.SOCK;
qm.e_stack.*.data.sock = socket;
qm.e_stack = qm.e_stack + 1;
}
export fn op_secure_accept_socket() void {
qm.process.status = 0;
var flags: i32 = undefined;
var server_socket: *qm.DESCRIPTOR = undefined;
const arg2 = qm.e_stack - 1;
qm.k_get_int(arg2);
flags = arg2.*.data.value;
server_socket = qm.e_stack - 2;
while (server_socket.*.type == qm.ADDR) : (server_socket = server_socket.*.data.d_addr) { }
var ret: i32 = undefined;
var client_fd = allocator.create(qm.mbedtls_net_context) catch {
std.debug.print("Failed to allocate client socket.\n", .{});
qm_pop(2);
qm_error();
return;
};
qm.mbedtls_net_init(client_fd);
var sock = server_socket.*.data.sock.*;
ret = qm.mbedtls_ssl_session_reset(sock.ssl);
if (ret != 0) {
std.debug.print("Reset Failed: {}\n", .{ret});
qm_pop(2);
qm_error();
return;
}
ret = qm.mbedtls_net_accept(sock.fd, client_fd, null, 0, null);
if (ret != 0) {
std.debug.print("Accept Failed: {}\n", .{ret});
qm_pop(2);
qm_error();
return;
}
qm.mbedtls_ssl_set_bio(sock.ssl, client_fd, qm.mbedtls_net_send, qm.mbedtls_net_recv, null);
ret = qm.mbedtls_ssl_handshake(sock.ssl);
while (ret != 0) : (ret = qm.mbedtls_ssl_handshake(sock.ssl)) {
if (ret != qm.MBEDTLS_ERR_SSL_WANT_READ and ret != qm.MBEDTLS_ERR_SSL_WANT_WRITE) {
std.debug.print("SSL Handshake Failed: {}\n", .{ret});
qm_pop(2);
qm_error();
return;
}
}
var client_socket: *qm.SOCKVAR = allocator.create(qm.SOCKVAR) catch {
std.debug.print("Failed to allocate client SOCKVAR.\n", .{});
qm_pop(2);
qm_error();
return;
};
client_socket.server = 0;
client_socket.fd = client_fd;
client_socket.ssl = sock.ssl;
qm_pop(2);
qm.e_stack.*.type = qm.SOCK;
qm.e_stack.*.data.sock = client_socket;
qm.e_stack = qm.e_stack + 1;
}
export fn op_secure_read_socket() void {
qm.process.status = 0;
var timeout: i32 = undefined;
var flags: i32 = undefined;
var max_len: usize = undefined;
const arg4 = qm.e_stack - 1;
qm.k_get_int(arg4);
timeout = arg4.*.data.value;
const arg3 = qm.e_stack - 2;
qm.k_get_int(arg3);
flags = arg3.*.data.value;
const arg2 = qm.e_stack - 3;
qm.k_get_int(arg2);
max_len = @intCast(arg2.*.data.value);
var client_socket = qm.e_stack - 4;
while (client_socket.*.type == qm.ADDR) : (client_socket = client_socket.*.data.d_addr) { }
var sock = client_socket.*.data.sock.*;
var ret: i32 = undefined;
var buffer = allocator.alloc(u8, max_len+1) catch {
std.debug.print("Failed to allocate client read buffer.\n", .{});
qm_pop(4);
qm_error();
return;
};
defer allocator.free(buffer);
@memset(buffer,0);
ret = qm.mbedtls_ssl_read(sock.ssl, &buffer[0], @as(usize,max_len));
const retString: [*c]const u8 = &buffer[0];
qm_pop(4);
qm.k_put_c_string(retString, qm.e_stack);
qm.e_stack = qm.e_stack + 1;
}
export fn op_secure_write_socket() void {
qm.process.status = 0;
var timeout: i32 = undefined;
var flags: i32 = undefined;
var str: ?*qm.STRING_CHUNK = undefined;
const arg4 = qm.e_stack - 1;
qm.k_get_int(arg4);
timeout = arg4.*.data.value;
const arg3 = qm.e_stack - 2;
qm.k_get_int(arg3);
flags = arg3.*.data.value;
const arg2 = qm.e_stack - 3;
qm.k_get_string(arg2);
str = arg2.*.data.str.saddr;
var client_socket = qm.e_stack - 4;
while (client_socket.*.type == qm.ADDR) : (client_socket = client_socket.*.data.d_addr) { }
var sock = client_socket.*.data.sock.*;
var bytes_sent: i32 = 0;
while (str != null) {
var p: *qm.STRING_CHUNK = str.?;
var len: usize = @intCast(p.bytes);
var ret: i32 = qm.mbedtls_ssl_write(sock.ssl, &p.data, len);
while (ret <= 0) : (ret = qm.mbedtls_ssl_write(sock.ssl, &p.data, len)) {
if (ret == qm.MBEDTLS_ERR_NET_CONN_RESET) {
std.debug.print("Connection reset: {}\n", .{ret});
qm_pop(4);
qm_error();
return;
}
if (ret != qm.MBEDTLS_ERR_SSL_WANT_READ and ret != qm.MBEDTLS_ERR_SSL_WANT_WRITE) {
std.debug.print("SSL Write Failed: {}\n", .{ret});
qm_pop(4);
qm_error();
return;
}
}
bytes_sent = bytes_sent + p.bytes;
str = p.next;
}
qm_pop(4);
qm.e_stack.*.type = qm.INTEGER;
qm.e_stack.*.data.value = bytes_sent;
qm.e_stack = qm.e_stack + 1;
}
export fn op_secure_close_socket() void {
qm.process.status = 0;
var descr = qm.e_stack - 1;
while (descr.*.type == qm.ADDR) : (descr = descr.*.data.d_addr) { }
var sock: qm.SOCKVAR = descr.*.data.sock.*;
if (sock.server == 0) {
var ret = qm.mbedtls_ssl_close_notify(sock.ssl);
while (ret < 0) : (ret = qm.mbedtls_ssl_close_notify(sock.ssl)) {
if (ret != qm.MBEDTLS_ERR_SSL_WANT_READ and ret != qm.MBEDTLS_ERR_SSL_WANT_WRITE) {
std.debug.print("SSL Close Failed: {}\n", .{ret});
qm_pop(1);
qm_error();
return;
}
}
qm.mbedtls_net_free(sock.fd);
} else if (sock.server == 1) {
qm.mbedtls_net_free(sock.fd);
qm.mbedtls_entropy_free(sock.entropy);
qm.mbedtls_ctr_drbg_free(sock.ctr_drbg);
qm.zmbedtls_ssl_config_free(sock.conf);
qm.mbedtls_x509_crt_free(sock.srvcrt);
qm.mbedtls_pk_free(sock.pkey);
qm.mbedtls_ssl_free(sock.ssl);
qm.mbedtls_ssl_cache_free(sock.cache);
}
qm_pop(1);
}