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:(before "End Types")
struct socket_t {
int fd;
sockaddr_in addr;
socket_t() {
fd = 0;
bzero(&addr, sizeof(addr));
}
};
:(before "End Primitive Recipe Declarations")
_OPEN_SERVER_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$open-server-socket", _OPEN_SERVER_SOCKET);
:(before "End Primitive Recipe Checks")
case _OPEN_SERVER_SOCKET: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'$open-server-socket' requires exactly one ingredient (the port to listen for requests on), but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '$open-server-socket' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (SIZE(inst.products) != 1) {
raise << maybe(get(Recipe, r).name) << "'$open-server-socket' requires exactly one product, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.products.at(0))) {
raise << maybe(get(Recipe, r).name) << "first product of '$open-server-socket' should be a number (file handle), but got '" << to_string(inst.products.at(0)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _OPEN_SERVER_SOCKET: {
int port = ingredients.at(0).at(0);
socket_t* server = server_socket(port);
products.resize(1);
if (server->fd < 0) {
delete server;
products.at(0).push_back(0);
break;
}
long long int result = reinterpret_cast<long long int>(server);
products.at(0).push_back(static_cast<double>(result));
break;
}
:(code)
socket_t* server_socket(int port) {
socket_t* result = new socket_t;
result->fd = socket(AF_INET, SOCK_STREAM, 0);
if (result->fd < 0) {
raise << "Failed to create server socket.\n" << end();
return result;
}
int dummy = 0;
setsockopt(result->fd, SOL_SOCKET, SO_REUSEADDR, &dummy, sizeof(dummy));
result->addr.sin_family = AF_INET;
result->addr.sin_addr.s_addr = INADDR_ANY;
result->addr.sin_port = htons(port);
if (bind(result->fd, reinterpret_cast<sockaddr*>(&result->addr), sizeof(result->addr)) >= 0) {
listen(result->fd, /*queue length*/5);
}
else {
close(result->fd);
result->fd = -1;
raise << "Failed to bind result socket to port " << port << ". Something's already using that port.\n" << end();
}
return result;
}
:(before "End Primitive Recipe Declarations")
_ACCEPT,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$accept", _ACCEPT);
:(before "End Primitive Recipe Checks")
case _ACCEPT: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'$accept' requires exactly one ingredient, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '$accept' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (SIZE(inst.products) != 1) {
raise << maybe(get(Recipe, r).name) << "'$accept' requires exactly one product, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.products.at(0))) {
raise << maybe(get(Recipe, r).name) << "first product of '$accept' should be a number (file handle), but got '" << to_string(inst.products.at(0)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _ACCEPT: {
products.resize(2);
products.at(1).push_back(ingredients.at(0).at(0)); // indicate it modifies its ingredient
long long int x = static_cast<long long int>(ingredients.at(0).at(0));
socket_t* server = reinterpret_cast<socket_t*>(x);
if (server) {
socket_t* session = accept_session(server);
long long int result = reinterpret_cast<long long int>(session);
products.at(0).push_back(static_cast<double>(result));
}
else {
products.at(0).push_back(0);
}
break;
}
:(code)
socket_t* accept_session(socket_t* server) {
if (server->fd == 0) return NULL;
socket_t* result = new socket_t;
socklen_t dummy = sizeof(result->addr);
result->fd = accept(server->fd, reinterpret_cast<sockaddr*>(&result->addr), &dummy);
return result;
}
:(before "End Primitive Recipe Declarations")
_READ_FROM_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$read-from-socket", _READ_FROM_SOCKET);
:(before "End Primitive Recipe Checks")
case _READ_FROM_SOCKET: {
if (SIZE(inst.ingredients) != 2) {
raise << maybe(get(Recipe, r).name) << "'$read-from-socket' requires exactly two ingredients, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '$read-from-socket' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(1))) {
raise << maybe(get(Recipe, r).name) << "second ingredient of '$read-from-socket' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (SIZE(inst.products) != 2) {
raise << maybe(get(Recipe, r).name) << "'$read-from-socket' requires exactly two product, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_text(inst.products.at(0))) {
raise << maybe(get(Recipe, r).name) << "first product of '$read-from-socket' should be a text (address array character), but got '" << to_string(inst.products.at(0)) << "'\n" << end();
break;
}
if (!is_mu_boolean(inst.products.at(1))) {
raise << maybe(get(Recipe, r).name) << "second product of '$read-from-socket' should be a boolean (eof?), but got '" << to_string(inst.products.at(1)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _READ_FROM_SOCKET: {
long long int x = static_cast<long long int>(ingredients.at(0).at(0));
int bytes = static_cast<int>(ingredients.at(1).at(0));
socket_t* socket = reinterpret_cast<socket_t*>(x);
int socket_fd = socket->fd;
char contents[bytes];
bzero(contents, bytes);
int bytes_read = read(socket_fd, contents, bytes-/*terminal null*/1);
//? cerr << "Read:\n" << string(contents) << "\n";
//? cerr << "bytes read: " << bytes_read << '\n';
products.resize(2);
products.at(0).push_back(new_mu_text(contents));
products.at(1).push_back(bytes_read < bytes-1);
break;
}
:(before "End Primitive Recipe Declarations")
_WRITE_TO_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$write-to-socket", _WRITE_TO_SOCKET);
:(before "End Primitive Recipe Checks")
case _WRITE_TO_SOCKET: {
if (SIZE(inst.ingredients) != 2) {
raise << maybe(get(Recipe, r).name) << "'$write-to-socket' requires exactly two ingredient, but got '" << inst.original_string << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _WRITE_TO_SOCKET: {
long long int x = static_cast<long long int>(ingredients.at(0).at(0));
socket_t* session = reinterpret_cast<socket_t*>(x);
// write just one character at a time to the session socket
long long int y = static_cast<long long int>(ingredients.at(1).at(0));
char c = static_cast<char>(y);
if (write(session->fd, &c, 1) != 1) {
raise << maybe(current_recipe_name()) << "failed to write to socket\n" << end();
exit(0);
}
long long int result = reinterpret_cast<long long int>(session);
products.resize(1);
products.at(0).push_back(result);
break;
}
:(before "End Primitive Recipe Declarations")
_CLOSE_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$close-socket", _CLOSE_SOCKET);
:(before "End Primitive Recipe Checks")
case _CLOSE_SOCKET: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'$close-socket' requires exactly two ingredient, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '$close-socket' should be a character, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _CLOSE_SOCKET: {
long long int x = static_cast<long long int>(ingredients.at(0).at(0));
socket_t* socket = reinterpret_cast<socket_t*>(x);
close(socket->fd);
break;
}
:(before "End Includes")
#include <netinet/in.h>
#include <sys/socket.h>
#include <unistd.h>
|