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:(before "End Includes")
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
:(before "End Types")
struct socket_t {
int fd;
sockaddr_in addr;
socket_t() {
fd = 0;
bzero(&addr, sizeof(addr));
}
};
:(code)
void server_socket(int portno, socket_t* server) {
server->fd = socket(AF_INET, SOCK_STREAM, 0);
int dummy;
setsockopt(server->fd, SOL_SOCKET, SO_REUSEADDR, &dummy, sizeof(dummy));
server->addr.sin_family = AF_INET;
server->addr.sin_addr.s_addr = INADDR_ANY;
server->addr.sin_port = htons(portno);
if (bind(server->fd, (struct sockaddr*)&server->addr, sizeof(server->addr)) < 0) {
server->fd = -1;
raise << "Failed to bind server socket to port " << portno << ". Something's already using that port." << "\n";
return;
}
listen(server->fd, 5);
}
:(before "End Primitive Recipe Declarations")
_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$socket", _SOCKET);
:(before "End Primitive Recipe Checks")
case _SOCKET: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'$socket' 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 '$socket' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (SIZE(inst.products) != 1) {
raise << maybe(get(Recipe, r).name) << "'$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 '$socket' should be a number (file handle), but got '" << to_string(inst.products.at(0)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _SOCKET: {
int port = ingredients.at(0).at(0);
socket_t server;
server_socket(port, &server);
if (server.fd < 0) {
break;
}
products.resize(1);
products.at(0).push_back(server.fd);
break;
}
:(code)
void session_socket(int serverfd, socket_t* session) {
socklen_t dummy = sizeof(session->addr);
session->fd = accept(serverfd, (struct sockaddr*)&session->addr, &dummy);
}
:(before "End Primitive Recipe Declarations")
_ACCEPT,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$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: {
double socket_fd = ingredients.at(0).at(0);
socket_t session;
session_socket(socket_fd, &session);
products.resize(1);
products.at(0).push_back(session.fd);
break;
}
:(before "End Primitive Recipe Declarations")
_READ_FROM_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$read-from-socket", _READ_FROM_SOCKET);
:(before "End Primitive Recipe Checks")
case _READ_FROM_SOCKET: {
if (SIZE(inst.ingredients) != 1) {
raise << maybe(get(Recipe, r).name) << "'$read-from-socket' 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 '$read-from-socket' should be a number, but got '" << to_string(inst.ingredients.at(0)) << "'\n" << end();
break;
}
if (SIZE(inst.products) != 1) {
raise << maybe(get(Recipe, r).name) << "'$read-from-socket' requires exactly one product, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_character(inst.products.at(0))) {
raise << maybe(get(Recipe, r).name) << "first product of '$read-from-socket' should be a character, but got '" << to_string(inst.products.at(0)) << "'\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _READ_FROM_SOCKET: {
products.resize(1);
double socket_fd = ingredients.at(0).at(0);
char single_char[2];
bzero(single_char, 2);
if (read(socket_fd, single_char, 1) < 0) {
raise << maybe(current_recipe_name()) << "read from socket failed\n" << end();
products.at(0).push_back(0);
break;
}
products.at(0).push_back(single_char[0]);
break;
}
:(before "End Primitive Recipe Declarations")
_CLOSE_SOCKET,
:(before "End Primitive Recipe Numbers")
put(Recipe_ordinal, "$close-socket", _CLOSE_SOCKET);
:(before "End Primitive Recipe Checks")
case _CLOSE_SOCKET: {
if (SIZE(inst.ingredients) != 2) {
raise << maybe(get(Recipe, r).name) << "'$close-socket' requires exactly two ingredient, but got '" << inst.original_string << "'\n" << end();
break;
}
if (!is_mu_number(inst.ingredients.at(0)) || !is_mu_number(inst.ingredients.at(0))) {
raise << maybe(get(Recipe, r).name) << "first ingredient of '$close-socket' should be a character, but got '" << to_string(inst.ingredients.at(0)) << "t\n" << end();
break;
}
break;
}
:(before "End Primitive Recipe Implementations")
case _CLOSE_SOCKET: {
double socket_fd = ingredients.at(0).at(0);
double session_fd = ingredients.at(1).at(0);
close(socket_fd);
close(session_fd);
break;
}
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