about summary refs log tree commit diff stats
path: root/091socket.cc
blob: 97f0a6c69992c377c64ce63a10f79c4842eecad4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
:(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;
}