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author | Diego Nehab <diego@tecgraf.puc-rio.br> | 2003-05-25 01:54:13 +0000 |
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committer | Diego Nehab <diego@tecgraf.puc-rio.br> | 2003-05-25 01:54:13 +0000 |
commit | 0f6c8d50a99997ac7829864b1c93362b50f1bbf3 (patch) | |
tree | d0cefe3a05484e65b7b7e79d8cae4a1d2e6d19fb /src/unix.c | |
parent | c1ef3e7103cc652d2004ef1ddc9409b946207f33 (diff) | |
download | luasocket-0f6c8d50a99997ac7829864b1c93362b50f1bbf3.tar.gz luasocket-0f6c8d50a99997ac7829864b1c93362b50f1bbf3.tar.bz2 luasocket-0f6c8d50a99997ac7829864b1c93362b50f1bbf3.zip |
Porting to LUA 5.0 final
Diffstat (limited to 'src/unix.c')
-rw-r--r-- | src/unix.c | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/src/unix.c b/src/unix.c deleted file mode 100644 index 23984b0..0000000 --- a/src/unix.c +++ /dev/null | |||
@@ -1,326 +0,0 @@ | |||
1 | /*=========================================================================*\ | ||
2 | * Network compatibilization module: Unix version | ||
3 | * | ||
4 | * RCS ID: $Id$ | ||
5 | \*=========================================================================*/ | ||
6 | #include <lua.h> | ||
7 | #include <lauxlib.h> | ||
8 | #include <string.h> | ||
9 | |||
10 | #include "lscompat.h" | ||
11 | |||
12 | /*=========================================================================*\ | ||
13 | * Internal function prototypes | ||
14 | \*=========================================================================*/ | ||
15 | static cchar *try_setoption(lua_State *L, COMPAT_FD sock); | ||
16 | static cchar *try_setbooloption(lua_State *L, COMPAT_FD sock, int name); | ||
17 | |||
18 | /*=========================================================================*\ | ||
19 | * Exported functions. | ||
20 | \*=========================================================================*/ | ||
21 | int compat_open(lua_State *L) | ||
22 | { | ||
23 | /* Instals a handler to ignore sigpipe. */ | ||
24 | struct sigaction new; | ||
25 | memset(&new, 0, sizeof(new)); | ||
26 | new.sa_handler = SIG_IGN; | ||
27 | sigaction(SIGPIPE, &new, NULL); | ||
28 | return 1; | ||
29 | } | ||
30 | |||
31 | COMPAT_FD compat_accept(COMPAT_FD s, struct sockaddr *addr, | ||
32 | size_t *len, int deadline) | ||
33 | { | ||
34 | struct timeval tv; | ||
35 | fd_set fds; | ||
36 | tv.tv_sec = deadline / 1000; | ||
37 | tv.tv_usec = (deadline % 1000) * 1000; | ||
38 | FD_ZERO(&fds); | ||
39 | FD_SET(s, &fds); | ||
40 | select(s+1, &fds, NULL, NULL, deadline >= 0 ? &tv : NULL); | ||
41 | return accept(s, addr, len); | ||
42 | } | ||
43 | |||
44 | int compat_send(COMPAT_FD c, cchar *data, size_t count, size_t *sent, | ||
45 | int deadline) | ||
46 | { | ||
47 | struct timeval tv; | ||
48 | fd_set fds; | ||
49 | ssize_t put = 0; | ||
50 | int err; | ||
51 | int ret; | ||
52 | tv.tv_sec = deadline / 1000; | ||
53 | tv.tv_usec = (deadline % 1000) * 1000; | ||
54 | FD_ZERO(&fds); | ||
55 | FD_SET(c, &fds); | ||
56 | ret = select(c+1, NULL, &fds, NULL, deadline >= 0 ? &tv : NULL); | ||
57 | if (ret > 0) { | ||
58 | put = write(c, data, count); | ||
59 | if (put <= 0) { | ||
60 | err = PRIV_CLOSED; | ||
61 | #ifdef __CYGWIN__ | ||
62 | /* this is for CYGWIN, which is like Unix but has Win32 bugs */ | ||
63 | if (errno == EWOULDBLOCK) err = PRIV_DONE; | ||
64 | #endif | ||
65 | *sent = 0; | ||
66 | } else { | ||
67 | *sent = put; | ||
68 | err = PRIV_DONE; | ||
69 | } | ||
70 | return err; | ||
71 | } else { | ||
72 | *sent = 0; | ||
73 | return PRIV_TIMEOUT; | ||
74 | } | ||
75 | } | ||
76 | |||
77 | int compat_sendto(COMPAT_FD c, cchar *data, size_t count, size_t *sent, | ||
78 | int deadline, SA *addr, size_t len) | ||
79 | { | ||
80 | struct timeval tv; | ||
81 | fd_set fds; | ||
82 | ssize_t put = 0; | ||
83 | int err; | ||
84 | int ret; | ||
85 | tv.tv_sec = deadline / 1000; | ||
86 | tv.tv_usec = (deadline % 1000) * 1000; | ||
87 | FD_ZERO(&fds); | ||
88 | FD_SET(c, &fds); | ||
89 | ret = select(c+1, NULL, &fds, NULL, deadline >= 0 ? &tv : NULL); | ||
90 | if (ret > 0) { | ||
91 | put = sendto(c, data, count, 0, addr, len); | ||
92 | if (put <= 0) { | ||
93 | err = PRIV_CLOSED; | ||
94 | #ifdef __CYGWIN__ | ||
95 | /* this is for CYGWIN, which is like Unix but has Win32 bugs */ | ||
96 | if (sent < 0 && errno == EWOULDBLOCK) err = PRIV_DONE; | ||
97 | #endif | ||
98 | *sent = 0; | ||
99 | } else { | ||
100 | *sent = put; | ||
101 | err = PRIV_DONE; | ||
102 | } | ||
103 | return err; | ||
104 | } else { | ||
105 | *sent = 0; | ||
106 | return PRIV_TIMEOUT; | ||
107 | } | ||
108 | } | ||
109 | |||
110 | int compat_recv(COMPAT_FD c, char *data, size_t count, size_t *got, | ||
111 | int deadline) | ||
112 | { | ||
113 | struct timeval tv; | ||
114 | fd_set fds; | ||
115 | int ret; | ||
116 | ssize_t taken = 0; | ||
117 | tv.tv_sec = deadline / 1000; | ||
118 | tv.tv_usec = (deadline % 1000) * 1000; | ||
119 | FD_ZERO(&fds); | ||
120 | FD_SET(c, &fds); | ||
121 | ret = select(c+1, &fds, NULL, NULL, deadline >= 0 ? &tv : NULL); | ||
122 | if (ret > 0) { | ||
123 | taken = read(c, data, count); | ||
124 | if (taken <= 0) { | ||
125 | *got = 0; | ||
126 | return PRIV_CLOSED; | ||
127 | } else { | ||
128 | *got = taken; | ||
129 | return PRIV_DONE; | ||
130 | } | ||
131 | } else { | ||
132 | *got = 0; | ||
133 | return PRIV_TIMEOUT; | ||
134 | } | ||
135 | } | ||
136 | |||
137 | int compat_recvfrom(COMPAT_FD c, char *data, size_t count, size_t *got, | ||
138 | int deadline, SA *addr, size_t *len) | ||
139 | { | ||
140 | struct timeval tv; | ||
141 | fd_set fds; | ||
142 | int ret; | ||
143 | ssize_t taken = 0; | ||
144 | tv.tv_sec = deadline / 1000; | ||
145 | tv.tv_usec = (deadline % 1000) * 1000; | ||
146 | FD_ZERO(&fds); | ||
147 | FD_SET(c, &fds); | ||
148 | ret = select(c+1, &fds, NULL, NULL, deadline >= 0 ? &tv : NULL); | ||
149 | if (ret > 0) { | ||
150 | taken = recvfrom(c, data, count, 0, addr, len); | ||
151 | if (taken <= 0) { | ||
152 | *got = 0; | ||
153 | return PRIV_CLOSED; | ||
154 | } else { | ||
155 | *got = taken; | ||
156 | return PRIV_DONE; | ||
157 | } | ||
158 | } else { | ||
159 | *got = 0; | ||
160 | return PRIV_TIMEOUT; | ||
161 | } | ||
162 | } | ||
163 | |||
164 | /*-------------------------------------------------------------------------*\ | ||
165 | * Returns a string describing the last host manipulation error. | ||
166 | \*-------------------------------------------------------------------------*/ | ||
167 | const char *compat_hoststrerror(void) | ||
168 | { | ||
169 | switch (h_errno) { | ||
170 | case HOST_NOT_FOUND: return "host not found"; | ||
171 | case NO_ADDRESS: return "unable to resolve host name"; | ||
172 | case NO_RECOVERY: return "name server error"; | ||
173 | case TRY_AGAIN: return "name server unavailable, try again later"; | ||
174 | default: return "unknown error"; | ||
175 | } | ||
176 | } | ||
177 | |||
178 | /*-------------------------------------------------------------------------*\ | ||
179 | * Returns a string describing the last socket manipulation error. | ||
180 | \*-------------------------------------------------------------------------*/ | ||
181 | const char *compat_socketstrerror(void) | ||
182 | { | ||
183 | switch (errno) { | ||
184 | case EACCES: return "access denied"; | ||
185 | case EMFILE: return "descriptor table is full"; | ||
186 | case ENFILE: return "too many open files"; | ||
187 | case ENOBUFS: return "insuffucient buffer space"; | ||
188 | default: return "unknown error"; | ||
189 | } | ||
190 | } | ||
191 | |||
192 | /*-------------------------------------------------------------------------*\ | ||
193 | * Returns a string describing the last bind command error. | ||
194 | \*-------------------------------------------------------------------------*/ | ||
195 | const char *compat_bindstrerror(void) | ||
196 | { | ||
197 | switch (errno) { | ||
198 | case EBADF: return "invalid descriptor"; | ||
199 | case EINVAL: return "socket already bound"; | ||
200 | case EACCES: return "access denied"; | ||
201 | case ENOTSOCK: return "not a socket descriptor"; | ||
202 | case EADDRINUSE: return "address already in use"; | ||
203 | case EADDRNOTAVAIL: return "address unavailable"; | ||
204 | case ENOMEM: return "out of memory"; | ||
205 | default: return "unknown error"; | ||
206 | } | ||
207 | } | ||
208 | |||
209 | /*-------------------------------------------------------------------------*\ | ||
210 | * Returns a string describing the last connect error. | ||
211 | \*-------------------------------------------------------------------------*/ | ||
212 | const char *compat_connectstrerror(void) | ||
213 | { | ||
214 | switch (errno) { | ||
215 | case EBADF: return "invalid descriptor"; | ||
216 | case ENOTSOCK: return "not a socket descriptor"; | ||
217 | case EADDRNOTAVAIL: return "address not availabe"; | ||
218 | case ETIMEDOUT: return "connection timed out"; | ||
219 | case ECONNREFUSED: return "connection refused"; | ||
220 | case EACCES: return "access denied"; | ||
221 | case ENETUNREACH: return "network is unreachable"; | ||
222 | case EADDRINUSE: return "address already in use"; | ||
223 | default: return "unknown error"; | ||
224 | } | ||
225 | } | ||
226 | |||
227 | /*-------------------------------------------------------------------------*\ | ||
228 | * Sets the SO_REUSEADDR socket option | ||
229 | * Input | ||
230 | * sock: socket descriptor | ||
231 | \*-------------------------------------------------------------------------*/ | ||
232 | void compat_setreuseaddr(COMPAT_FD sock) | ||
233 | { | ||
234 | int val = 1; | ||
235 | setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val)); | ||
236 | } | ||
237 | |||
238 | COMPAT_FD compat_socket(int domain, int type, int protocol) | ||
239 | { | ||
240 | COMPAT_FD sock = socket(domain, type, protocol); | ||
241 | if (sock != COMPAT_INVALIDFD) { | ||
242 | compat_setnonblocking(sock); | ||
243 | compat_setreuseaddr(sock); | ||
244 | } | ||
245 | return sock; | ||
246 | } | ||
247 | |||
248 | /*-------------------------------------------------------------------------*\ | ||
249 | * Put socket into blocking mode. | ||
250 | \*-------------------------------------------------------------------------*/ | ||
251 | void compat_setblocking(COMPAT_FD sock) | ||
252 | { | ||
253 | int flags = fcntl(sock, F_GETFL, 0); | ||
254 | flags &= (~(O_NONBLOCK)); | ||
255 | fcntl(sock, F_SETFL, flags); | ||
256 | } | ||
257 | |||
258 | /*-------------------------------------------------------------------------*\ | ||
259 | * Put socket into non-blocking mode. | ||
260 | \*-------------------------------------------------------------------------*/ | ||
261 | void compat_setnonblocking(COMPAT_FD sock) | ||
262 | { | ||
263 | int flags = fcntl(sock, F_GETFL, 0); | ||
264 | flags |= O_NONBLOCK; | ||
265 | fcntl(sock, F_SETFL, flags); | ||
266 | } | ||
267 | |||
268 | /*-------------------------------------------------------------------------*\ | ||
269 | * Tries to set extended udp socket options | ||
270 | * Input | ||
271 | * udp: udp structure | ||
272 | * oldtop: top of stack | ||
273 | * Returns | ||
274 | * NULL if successfull, error message on error | ||
275 | \*-------------------------------------------------------------------------*/ | ||
276 | cchar *compat_trysetoptions(lua_State *L, COMPAT_FD sock) | ||
277 | { | ||
278 | if (!lua_istable(L, 1)) luaL_argerror(L, 1, "invalid options table"); | ||
279 | lua_pushnil(L); | ||
280 | while (lua_next(L, 1)) { | ||
281 | cchar *err = try_setoption(L, sock); | ||
282 | lua_pop(L, 1); | ||
283 | if (err) return err; | ||
284 | } | ||
285 | return NULL; | ||
286 | } | ||
287 | |||
288 | /*=========================================================================*\ | ||
289 | * Internal functions. | ||
290 | \*=========================================================================*/ | ||
291 | static cchar *try_setbooloption(lua_State *L, COMPAT_FD sock, int name) | ||
292 | { | ||
293 | int bool, res; | ||
294 | if (!lua_isnumber(L, -1)) luaL_error(L, "invalid option value"); | ||
295 | bool = (int) lua_tonumber(L, -1); | ||
296 | res = setsockopt(sock, SOL_SOCKET, name, (char *) &bool, sizeof(bool)); | ||
297 | if (res < 0) return "error setting option"; | ||
298 | else return NULL; | ||
299 | } | ||
300 | |||
301 | |||
302 | /*-------------------------------------------------------------------------*\ | ||
303 | * Set socket options from a table on top of Lua stack. | ||
304 | * Supports SO_KEEPALIVE, SO_DONTROUTE, SO_BROADCAST, and SO_LINGER options. | ||
305 | * Input | ||
306 | * L: Lua state to use | ||
307 | * sock: socket descriptor | ||
308 | * Returns | ||
309 | * 1 if successful, 0 otherwise | ||
310 | \*-------------------------------------------------------------------------*/ | ||
311 | static cchar *try_setoption(lua_State *L, COMPAT_FD sock) | ||
312 | { | ||
313 | static cchar *options[] = { | ||
314 | "SO_KEEPALIVE", "SO_DONTROUTE", "SO_BROADCAST", "SO_LINGER", NULL | ||
315 | }; | ||
316 | cchar *option = lua_tostring(L, -2); | ||
317 | if (!lua_isstring(L, -2)) return "invalid option"; | ||
318 | switch (luaL_findstring(option, options)) { | ||
319 | case 0: return try_setbooloption(L, sock, SO_KEEPALIVE); | ||
320 | case 1: return try_setbooloption(L, sock, SO_DONTROUTE); | ||
321 | case 2: return try_setbooloption(L, sock, SO_BROADCAST); | ||
322 | case 3: return "SO_LINGER is deprecated"; | ||
323 | default: return "unsupported option"; | ||
324 | } | ||
325 | } | ||
326 | |||