Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | bab9d03 | 1992-04-05 14:26:55 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 3 | Netherlands. |
| 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
| 25 | /* Socket module */ |
| 26 | |
| 27 | /* |
| 28 | This module provides an interface to Berkeley socket IPC. |
| 29 | |
| 30 | Limitations: |
| 31 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 32 | - only AF_INET and AF_UNIX address families are supported |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 33 | - no asynchronous I/O (but read polling: avail) |
| 34 | - no read/write operations (use send/recv or makefile instead) |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 35 | - no flags on sendto/recvfrom operations |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 36 | - setsockopt() and getsockopt() only support integer options |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 37 | |
| 38 | Interface: |
| 39 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 40 | - socket.gethostname() --> host name (string) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 41 | - socket.gethostbyname(hostname) --> host IP address (string: 'dd.dd.dd.dd') |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 42 | - socket.getservbyname(servername, protocolname) --> port number |
| 43 | - socket.socket(family, type [, proto]) --> new socket object |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 44 | - family and type constants from <socket.h> are accessed as socket.AF_INET etc. |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 45 | - errors are reported as the exception socket.error |
| 46 | - an Internet socket address is a pair (hostname, port) |
| 47 | where hostname can be anything recognized by gethostbyname() |
| 48 | (including the dd.dd.dd.dd notation) and port is in host byte order |
| 49 | - where a hostname is returned, the dd.dd.dd.dd notation is used |
| 50 | - a UNIX domain socket is a string specifying the pathname |
| 51 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 52 | Socket methods: |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 53 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 54 | - s.accept() --> new socket object, sockaddr |
| 55 | - s.avail() --> boolean |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 56 | - s.setsockopt(level, optname, flag) --> None |
| 57 | - s.getsockopt(level, optname) --> flag |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 58 | - s.bind(sockaddr) --> None |
| 59 | - s.connect(sockaddr) --> None |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 60 | - s.listen(n) --> None |
| 61 | - s.makefile(mode) --> file object |
| 62 | - s.recv(nbytes) --> string |
| 63 | - s.recvfrom(nbytes) --> string, sockaddr |
| 64 | - s.send(string) --> None |
| 65 | - s.sendto(string, sockaddr) --> None |
| 66 | - s.shutdown(how) --> None |
| 67 | - s.close() --> None |
| 68 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 69 | */ |
| 70 | |
| 71 | #include "allobjects.h" |
| 72 | #include "modsupport.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 73 | #include "ceval.h" |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 74 | |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 75 | #include "myselect.h" /* Implies <sys/types.h>, <sys/time.h>, <sys/param.h> */ |
| 76 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 77 | #include <signal.h> |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 78 | #include <sys/socket.h> |
| 79 | #include <netinet/in.h> |
| 80 | #include <sys/un.h> |
| 81 | #include <netdb.h> |
| 82 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 83 | |
| 84 | /* Global variable holding the exception type for errors detected |
| 85 | by this module (but not argument type or memory errors, etc.). */ |
| 86 | |
| 87 | static object *SocketError; |
| 88 | |
| 89 | |
| 90 | /* Convenience function to raise an error according to errno |
| 91 | and return a NULL pointer from a function. */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 92 | |
| 93 | static object * |
| 94 | socket_error() |
| 95 | { |
| 96 | return err_errno(SocketError); |
| 97 | } |
| 98 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 99 | |
| 100 | /* The object holding a socket. It holds some extra information, |
| 101 | like the address family, which is used to decode socket address |
| 102 | arguments properly. */ |
| 103 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 104 | typedef struct { |
| 105 | OB_HEAD |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 106 | int sock_fd; /* Socket file descriptor */ |
| 107 | int sock_family; /* Address family, e.g., AF_INET */ |
| 108 | int sock_type; /* Socket type, e.g., SOCK_STREAM */ |
| 109 | int sock_proto; /* Protocol type, usually 0 */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 110 | } sockobject; |
| 111 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 112 | |
| 113 | /* A forward reference to the Socktype type object. |
| 114 | The Socktype variable contains pointers to various functions, |
| 115 | some of which call newsocobject(), which uses Socktype, so |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 116 | there has to be a circular reference. */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 117 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 118 | extern typeobject Socktype; /* Forward */ |
| 119 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 120 | |
| 121 | /* Create a new socket object. |
| 122 | This just creates the object and initializes it. |
| 123 | If the creation fails, return NULL and set an exception (implicit |
| 124 | in NEWOBJ()). */ |
| 125 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 126 | static sockobject * |
| 127 | newsockobject(fd, family, type, proto) |
| 128 | int fd, family, type, proto; |
| 129 | { |
| 130 | sockobject *s; |
| 131 | s = NEWOBJ(sockobject, &Socktype); |
| 132 | if (s != NULL) { |
| 133 | s->sock_fd = fd; |
| 134 | s->sock_family = family; |
| 135 | s->sock_type = type; |
| 136 | s->sock_proto = proto; |
| 137 | } |
| 138 | return s; |
| 139 | } |
| 140 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 141 | |
| 142 | /* Convert a string specifying a host name or one of a few symbolic |
| 143 | names to a numeric IP address. This usually calls gethostbyname() |
| 144 | to do the work; the names "" and "<broadcast>" are special. |
| 145 | Return the length (should always be 4 bytes), or negative if |
| 146 | an error occurred; then an exception is raised. */ |
| 147 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 148 | static int |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 149 | setipaddr(name, addr_ret) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 150 | char *name; |
| 151 | struct sockaddr_in *addr_ret; |
| 152 | { |
| 153 | struct hostent *hp; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 154 | int d1, d2, d3, d4; |
| 155 | char ch; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 156 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 157 | if (name[0] == '\0') { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 158 | addr_ret->sin_addr.s_addr = INADDR_ANY; |
| 159 | return 4; |
| 160 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 161 | if (name[0] == '<' && strcmp(name, "<broadcast>") == 0) { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 162 | addr_ret->sin_addr.s_addr = INADDR_BROADCAST; |
| 163 | return 4; |
| 164 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 165 | if (sscanf(name, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && |
| 166 | 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && |
| 167 | 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { |
| 168 | addr_ret->sin_addr.s_addr = htonl( |
| 169 | ((long) d1 << 24) | ((long) d2 << 16) | |
| 170 | ((long) d3 << 8) | ((long) d4 << 0)); |
| 171 | return 4; |
| 172 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 173 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 174 | hp = gethostbyname(name); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 175 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 176 | if (hp == NULL) { |
| 177 | err_setstr(SocketError, "host not found"); |
| 178 | return -1; |
| 179 | } |
| 180 | memcpy((char *) &addr_ret->sin_addr, hp->h_addr, hp->h_length); |
| 181 | return hp->h_length; |
| 182 | } |
| 183 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 184 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 185 | /* Create a string object representing an IP address. |
| 186 | This is always a string of the form 'dd.dd.dd.dd' (with variable |
| 187 | size numbers). */ |
| 188 | |
| 189 | static object * |
| 190 | makeipaddr(addr) |
| 191 | struct sockaddr_in *addr; |
| 192 | { |
| 193 | long x = ntohl(addr->sin_addr.s_addr); |
| 194 | char buf[100]; |
| 195 | sprintf(buf, "%d.%d.%d.%d", |
| 196 | (int) (x>>24) & 0xff, (int) (x>>16) & 0xff, |
| 197 | (int) (x>> 8) & 0xff, (int) (x>> 0) & 0xff); |
| 198 | return newstringobject(buf); |
| 199 | } |
| 200 | |
| 201 | |
| 202 | /* Create an object representing the given socket address, |
| 203 | suitable for passing it back to bind(), connect() etc. |
| 204 | The family field of the sockaddr structure is inspected |
| 205 | to determine what kind of address it really is. */ |
| 206 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 207 | /*ARGSUSED*/ |
| 208 | static object * |
| 209 | makesockaddr(addr, addrlen) |
| 210 | struct sockaddr *addr; |
| 211 | int addrlen; |
| 212 | { |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 213 | if (addrlen == 0) { |
| 214 | /* No address -- may be recvfrom() from known socket */ |
| 215 | INCREF(None); |
| 216 | return None; |
| 217 | } |
| 218 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 219 | switch (addr->sa_family) { |
| 220 | |
| 221 | case AF_INET: |
| 222 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 223 | struct sockaddr_in *a = (struct sockaddr_in *) addr; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 224 | return mkvalue("Oi", makeipaddr(a), ntohs(a->sin_port)); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 225 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 226 | |
| 227 | case AF_UNIX: |
| 228 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 229 | struct sockaddr_un *a = (struct sockaddr_un *) addr; |
| 230 | return newstringobject(a->sun_path); |
| 231 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 232 | |
| 233 | /* More cases here... */ |
| 234 | |
| 235 | default: |
| 236 | err_setstr(SocketError, "return unknown socket address type"); |
| 237 | return NULL; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 238 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 239 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 240 | } |
| 241 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 242 | |
| 243 | /* Parse a socket address argument according to the socket object's |
| 244 | address family. Return 1 if the address was in the proper format, |
| 245 | 0 of not. The address is returned through addr_ret, its length |
| 246 | through len_ret. */ |
| 247 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 248 | static int |
| 249 | getsockaddrarg(s, args, addr_ret, len_ret) |
| 250 | sockobject *s; |
| 251 | object *args; |
| 252 | struct sockaddr **addr_ret; |
| 253 | int *len_ret; |
| 254 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 255 | switch (s->sock_family) { |
| 256 | |
| 257 | case AF_UNIX: |
| 258 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 259 | static struct sockaddr_un addr; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 260 | char *path; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 261 | int len; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 262 | if (!getargs(args, "s#", &path, &len)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 263 | return 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 264 | if (len > sizeof addr.sun_path) { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 265 | err_setstr(SocketError, "AF_UNIX path too long"); |
| 266 | return 0; |
| 267 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 268 | addr.sun_family = AF_UNIX; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 269 | memcpy(addr.sun_path, path, len); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 270 | *addr_ret = (struct sockaddr *) &addr; |
| 271 | *len_ret = len + sizeof addr.sun_family; |
| 272 | return 1; |
| 273 | } |
| 274 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 275 | case AF_INET: |
| 276 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 277 | static struct sockaddr_in addr; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 278 | char *host; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 279 | int port; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 280 | if (!getargs(args, "(si)", &host, &port)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 281 | return 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 282 | if (setipaddr(host, &addr) < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 283 | return 0; |
| 284 | addr.sin_family = AF_INET; |
| 285 | addr.sin_port = htons(port); |
| 286 | *addr_ret = (struct sockaddr *) &addr; |
| 287 | *len_ret = sizeof addr; |
| 288 | return 1; |
| 289 | } |
| 290 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 291 | /* More cases here... */ |
| 292 | |
| 293 | default: |
| 294 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 295 | return 0; |
| 296 | |
| 297 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 298 | } |
| 299 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 300 | |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame] | 301 | /* Get the address length according to the socket object's address family. |
| 302 | Return 1 if the family is known, 0 otherwise. The length is returned |
| 303 | through len_ret. */ |
| 304 | |
| 305 | static int |
| 306 | getsockaddrlen(s, len_ret) |
| 307 | sockobject *s; |
| 308 | int *len_ret; |
| 309 | { |
| 310 | switch (s->sock_family) { |
| 311 | |
| 312 | case AF_UNIX: |
| 313 | { |
| 314 | *len_ret = sizeof (struct sockaddr_un); |
| 315 | return 1; |
| 316 | } |
| 317 | |
| 318 | case AF_INET: |
| 319 | { |
| 320 | *len_ret = sizeof (struct sockaddr_in); |
| 321 | return 1; |
| 322 | } |
| 323 | |
| 324 | /* More cases here... */ |
| 325 | |
| 326 | default: |
| 327 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 328 | return 0; |
| 329 | |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 334 | /* s.accept() method */ |
| 335 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 336 | static object * |
| 337 | sock_accept(s, args) |
| 338 | sockobject *s; |
| 339 | object *args; |
| 340 | { |
| 341 | char addrbuf[256]; |
| 342 | int addrlen, newfd; |
| 343 | object *res; |
| 344 | if (!getnoarg(args)) |
| 345 | return NULL; |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame] | 346 | if (!getsockaddrlen(s, &addrlen)) |
| 347 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 348 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 349 | newfd = accept(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 350 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 351 | if (newfd < 0) |
| 352 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 353 | /* Create the new object with unspecified family, |
| 354 | to avoid calls to bind() etc. on it. */ |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 355 | res = mkvalue("OO", (object *) newsockobject(newfd, |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 356 | s->sock_family, |
| 357 | s->sock_type, |
| 358 | s->sock_proto), |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 359 | makesockaddr((struct sockaddr *) addrbuf, addrlen)); |
| 360 | if (res == NULL) |
| 361 | close(newfd); |
| 362 | return res; |
| 363 | } |
| 364 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 365 | |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 366 | /* s.allowbroadcast() method */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 367 | /* XXX obsolete -- will disappear in next release */ |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 368 | |
| 369 | static object * |
| 370 | sock_allowbroadcast(s, args) |
| 371 | sockobject *s; |
| 372 | object *args; |
| 373 | { |
| 374 | int flag; |
| 375 | int res; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 376 | if (!getargs(args, "i", &flag)) |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 377 | return NULL; |
| 378 | res = setsockopt(s->sock_fd, SOL_SOCKET, SO_BROADCAST, |
| 379 | &flag, sizeof flag); |
| 380 | if (res < 0) |
| 381 | return socket_error(); |
| 382 | INCREF(None); |
| 383 | return None; |
| 384 | } |
| 385 | |
| 386 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 387 | /* s.setsockopt() method. |
| 388 | With an integer third argument, sets an integer option. |
| 389 | With a string third argument, sets an option from a buffer; |
| 390 | use optional built-in module 'struct' to encode the string. */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 391 | |
| 392 | static object * |
| 393 | sock_setsockopt(s, args) |
| 394 | sockobject *s; |
| 395 | object *args; |
| 396 | { |
| 397 | int level; |
| 398 | int optname; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 399 | int res; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 400 | char *buf; |
| 401 | int buflen; |
| 402 | int flag; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 403 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 404 | if (getargs(args, "(iii)", &level, &optname, &flag)) { |
| 405 | buf = (char *) &flag; |
| 406 | buflen = sizeof flag; |
| 407 | } |
| 408 | else { |
| 409 | err_clear(); |
| 410 | if (!getargs(args, "(iis#)", &level, &optname, &buf, &buflen)) |
| 411 | return NULL; |
| 412 | } |
| 413 | res = setsockopt(s->sock_fd, level, optname, buf, buflen); |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 414 | if (res < 0) |
| 415 | return socket_error(); |
| 416 | INCREF(None); |
| 417 | return None; |
| 418 | } |
| 419 | |
| 420 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 421 | /* s.getsockopt() method. |
| 422 | With two arguments, retrieves an integer option. |
| 423 | With a third integer argument, retrieves a string buffer of that size; |
| 424 | use optional built-in module 'struct' to decode the string. */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 425 | |
| 426 | static object * |
| 427 | sock_getsockopt(s, args) |
| 428 | sockobject *s; |
| 429 | object *args; |
| 430 | { |
| 431 | int level; |
| 432 | int optname; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 433 | int res; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 434 | object *buf; |
| 435 | int buflen; |
| 436 | int flag; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 437 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 438 | if (getargs(args, "(ii)", &level, &optname)) { |
| 439 | int flag = 0; |
| 440 | int flagsize = sizeof flag; |
| 441 | res = getsockopt(s->sock_fd, level, optname, &flag, &flagsize); |
| 442 | if (res < 0) |
| 443 | return socket_error(); |
| 444 | return newintobject(flag); |
| 445 | } |
| 446 | err_clear(); |
| 447 | if (!getargs(args, "(iii)", &level, &optname, &buflen)) |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 448 | return NULL; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 449 | if (buflen <= 0 || buflen > 1024) { |
| 450 | err_setstr(SocketError, "getsockopt buflen out of range"); |
| 451 | return NULL; |
| 452 | } |
| 453 | buf = newsizedstringobject((char *)NULL, buflen); |
| 454 | if (buf == NULL) |
| 455 | return NULL; |
| 456 | res = getsockopt(s->sock_fd, level, optname, getstringvalue(buf), |
| 457 | &buflen); |
| 458 | if (res < 0) { |
| 459 | DECREF(buf); |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 460 | return socket_error(); |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame^] | 461 | } |
| 462 | resizestring(&buf, buflen); |
| 463 | return buf; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 464 | } |
| 465 | |
| 466 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 467 | /* s.avail() method */ |
| 468 | |
| 469 | static object * |
| 470 | sock_avail(s, args) |
| 471 | sockobject *s; |
| 472 | object *args; |
| 473 | { |
| 474 | struct timeval timeout; |
| 475 | fd_set readers; |
| 476 | int n; |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 477 | if (!getnoarg(args)) |
| 478 | return NULL; |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 479 | timeout.tv_sec = 0; |
| 480 | timeout.tv_usec = 0; |
| 481 | FD_ZERO(&readers); |
| 482 | FD_SET(s->sock_fd, &readers); |
| 483 | n = select(s->sock_fd+1, &readers, (fd_set *)0, (fd_set *)0, &timeout); |
| 484 | if (n < 0) |
| 485 | return socket_error(); |
| 486 | return newintobject((long) (n != 0)); |
| 487 | } |
| 488 | |
| 489 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 490 | /* s.bind(sockaddr) method */ |
| 491 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 492 | static object * |
| 493 | sock_bind(s, args) |
| 494 | sockobject *s; |
| 495 | object *args; |
| 496 | { |
| 497 | struct sockaddr *addr; |
| 498 | int addrlen; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 499 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 500 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 501 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 502 | BGN_SAVE |
| 503 | res = bind(s->sock_fd, addr, addrlen); |
| 504 | END_SAVE |
| 505 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 506 | return socket_error(); |
| 507 | INCREF(None); |
| 508 | return None; |
| 509 | } |
| 510 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 511 | |
| 512 | /* s.close() method. |
| 513 | Set the file descriptor to -1 so operations tried subsequently |
| 514 | will surely fail. */ |
| 515 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 516 | static object * |
| 517 | sock_close(s, args) |
| 518 | sockobject *s; |
| 519 | object *args; |
| 520 | { |
| 521 | if (!getnoarg(args)) |
| 522 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 523 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 524 | (void) close(s->sock_fd); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 525 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 526 | s->sock_fd = -1; |
| 527 | INCREF(None); |
| 528 | return None; |
| 529 | } |
| 530 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 531 | |
| 532 | /* s.connect(sockaddr) method */ |
| 533 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 534 | static object * |
| 535 | sock_connect(s, args) |
| 536 | sockobject *s; |
| 537 | object *args; |
| 538 | { |
| 539 | struct sockaddr *addr; |
| 540 | int addrlen; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 541 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 542 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 543 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 544 | BGN_SAVE |
| 545 | res = connect(s->sock_fd, addr, addrlen); |
| 546 | END_SAVE |
| 547 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 548 | return socket_error(); |
| 549 | INCREF(None); |
| 550 | return None; |
| 551 | } |
| 552 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 553 | |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 554 | /* s.fileno() method */ |
| 555 | |
| 556 | static object * |
| 557 | sock_fileno(s, args) |
| 558 | sockobject *s; |
| 559 | object *args; |
| 560 | { |
| 561 | if (!getnoarg(args)) |
| 562 | return NULL; |
| 563 | return newintobject((long) s->sock_fd); |
| 564 | } |
| 565 | |
| 566 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 567 | /* s.listen(n) method */ |
| 568 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 569 | static object * |
| 570 | sock_listen(s, args) |
| 571 | sockobject *s; |
| 572 | object *args; |
| 573 | { |
| 574 | int backlog; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 575 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 576 | if (!getintarg(args, &backlog)) |
| 577 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 578 | BGN_SAVE |
| 579 | res = listen(s->sock_fd, backlog); |
| 580 | END_SAVE |
| 581 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 582 | return socket_error(); |
| 583 | INCREF(None); |
| 584 | return None; |
| 585 | } |
| 586 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 587 | |
| 588 | /* s.makefile(mode) method. |
| 589 | Create a new open file object referring to a dupped version of |
| 590 | the socket's file descriptor. (The dup() call is necessary so |
| 591 | that the open file and socket objects may be closed independent |
| 592 | of each other.) |
| 593 | The mode argument specifies 'r' or 'w' passed to fdopen(). */ |
| 594 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 595 | static object * |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 596 | sock_makefile(s, args) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 597 | sockobject *s; |
| 598 | object *args; |
| 599 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 600 | extern int fclose PROTO((FILE *)); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 601 | char *mode; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 602 | int fd; |
| 603 | FILE *fp; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 604 | if (!getargs(args, "s", &mode)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 605 | return NULL; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 606 | if ((fd = dup(s->sock_fd)) < 0 || |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 607 | (fp = fdopen(fd, mode)) == NULL) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 608 | return socket_error(); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 609 | return newopenfileobject(fp, "<socket>", mode, fclose); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | |
| 613 | /* s.recv(nbytes) method */ |
| 614 | |
| 615 | static object * |
| 616 | sock_recv(s, args) |
| 617 | sockobject *s; |
| 618 | object *args; |
| 619 | { |
| 620 | int len, n, flags; |
| 621 | object *buf; |
| 622 | if (!getintintarg(args, &len, &flags)) { |
| 623 | err_clear(); |
| 624 | if (!getintarg(args, &len)) |
| 625 | return NULL; |
| 626 | flags = 0; |
| 627 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 628 | buf = newsizedstringobject((char *) 0, len); |
| 629 | if (buf == NULL) |
| 630 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 631 | BGN_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 632 | n = recv(s->sock_fd, getstringvalue(buf), len, flags); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 633 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 634 | if (n < 0) |
| 635 | return socket_error(); |
| 636 | if (resizestring(&buf, n) < 0) |
| 637 | return NULL; |
| 638 | return buf; |
| 639 | } |
| 640 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 641 | |
| 642 | /* s.recvfrom(nbytes) method */ |
| 643 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 644 | static object * |
| 645 | sock_recvfrom(s, args) |
| 646 | sockobject *s; |
| 647 | object *args; |
| 648 | { |
| 649 | char addrbuf[256]; |
| 650 | object *buf; |
| 651 | int addrlen, len, n; |
| 652 | if (!getintarg(args, &len)) |
| 653 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 654 | if (!getsockaddrlen(s, &addrlen)) |
| 655 | return NULL; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 656 | buf = newsizedstringobject((char *) 0, len); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 657 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 658 | n = recvfrom(s->sock_fd, getstringvalue(buf), len, 0, |
| 659 | addrbuf, &addrlen); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 660 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 661 | if (n < 0) |
| 662 | return socket_error(); |
| 663 | if (resizestring(&buf, n) < 0) |
| 664 | return NULL; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 665 | return mkvalue("OO", buf, |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 666 | makesockaddr((struct sockaddr *)addrbuf, addrlen)); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 667 | } |
| 668 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 669 | |
| 670 | /* s.send(data) method */ |
| 671 | |
| 672 | static object * |
| 673 | sock_send(s, args) |
| 674 | sockobject *s; |
| 675 | object *args; |
| 676 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 677 | char *buf; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 678 | int len, n, flags; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 679 | if (!getargs(args, "(s#i)", &buf, &len, &flags)) { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 680 | err_clear(); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 681 | if (!getargs(args, "s#", &buf, &len)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 682 | return NULL; |
| 683 | flags = 0; |
| 684 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 685 | BGN_SAVE |
| 686 | n = send(s->sock_fd, buf, len, flags); |
| 687 | END_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 688 | if (n < 0) |
| 689 | return socket_error(); |
| 690 | INCREF(None); |
| 691 | return None; |
| 692 | } |
| 693 | |
| 694 | |
| 695 | /* s.sendto(data, sockaddr) method */ |
| 696 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 697 | static object * |
| 698 | sock_sendto(s, args) |
| 699 | sockobject *s; |
| 700 | object *args; |
| 701 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 702 | object *addro; |
| 703 | char *buf; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 704 | struct sockaddr *addr; |
| 705 | int addrlen, len, n; |
| 706 | if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
| 707 | err_badarg(); |
| 708 | return NULL; |
| 709 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 710 | if (!getargs(args, "(s#O)", &buf, &len, &addro) || |
| 711 | !getsockaddrarg(s, addro, &addr, &addrlen)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 712 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 713 | BGN_SAVE |
| 714 | n = sendto(s->sock_fd, buf, len, 0, addr, addrlen); |
| 715 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 716 | if (n < 0) |
| 717 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 718 | INCREF(None); |
| 719 | return None; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 720 | } |
| 721 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 722 | |
| 723 | /* s.shutdown(how) method */ |
| 724 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 725 | static object * |
| 726 | sock_shutdown(s, args) |
| 727 | sockobject *s; |
| 728 | object *args; |
| 729 | { |
| 730 | int how; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 731 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 732 | if (!getintarg(args, &how)) |
| 733 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 734 | BGN_SAVE |
| 735 | res = shutdown(s->sock_fd, how); |
| 736 | END_SAVE |
| 737 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 738 | return socket_error(); |
| 739 | INCREF(None); |
| 740 | return None; |
| 741 | } |
| 742 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 743 | |
| 744 | /* List of methods for socket objects */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 745 | |
| 746 | static struct methodlist sock_methods[] = { |
| 747 | {"accept", sock_accept}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 748 | {"avail", sock_avail}, |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 749 | {"allowbroadcast", sock_allowbroadcast}, |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 750 | {"setsockopt", sock_setsockopt}, |
| 751 | {"getsockopt", sock_getsockopt}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 752 | {"bind", sock_bind}, |
| 753 | {"close", sock_close}, |
| 754 | {"connect", sock_connect}, |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 755 | {"fileno", sock_fileno}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 756 | {"listen", sock_listen}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 757 | {"makefile", sock_makefile}, |
| 758 | {"recv", sock_recv}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 759 | {"recvfrom", sock_recvfrom}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 760 | {"send", sock_send}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 761 | {"sendto", sock_sendto}, |
| 762 | {"shutdown", sock_shutdown}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 763 | {NULL, NULL} /* sentinel */ |
| 764 | }; |
| 765 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 766 | |
| 767 | /* Deallocate a socket object in response to the last DECREF(). |
| 768 | First close the file description. */ |
| 769 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 770 | static void |
| 771 | sock_dealloc(s) |
| 772 | sockobject *s; |
| 773 | { |
| 774 | (void) close(s->sock_fd); |
| 775 | DEL(s); |
| 776 | } |
| 777 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 778 | |
| 779 | /* Return a socket object's named attribute. */ |
| 780 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 781 | static object * |
| 782 | sock_getattr(s, name) |
| 783 | sockobject *s; |
| 784 | char *name; |
| 785 | { |
| 786 | return findmethod(sock_methods, (object *) s, name); |
| 787 | } |
| 788 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 789 | |
| 790 | /* Type object for socket objects. |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 791 | XXX This should be static, but some compilers don't grok the |
| 792 | XXX forward reference to it in that case... */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 793 | |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 794 | typeobject Socktype = { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 795 | OB_HEAD_INIT(&Typetype) |
| 796 | 0, |
| 797 | "socket", |
| 798 | sizeof(sockobject), |
| 799 | 0, |
| 800 | sock_dealloc, /*tp_dealloc*/ |
| 801 | 0, /*tp_print*/ |
| 802 | sock_getattr, /*tp_getattr*/ |
| 803 | 0, /*tp_setattr*/ |
| 804 | 0, /*tp_compare*/ |
| 805 | 0, /*tp_repr*/ |
| 806 | 0, /*tp_as_number*/ |
| 807 | 0, /*tp_as_sequence*/ |
| 808 | 0, /*tp_as_mapping*/ |
| 809 | }; |
| 810 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 811 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 812 | /* Python interface to gethostname(). */ |
| 813 | |
| 814 | /*ARGSUSED*/ |
| 815 | static object * |
| 816 | socket_gethostname(self, args) |
| 817 | object *self; |
| 818 | object *args; |
| 819 | { |
| 820 | char buf[1024]; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 821 | int res; |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 822 | if (!getnoarg(args)) |
| 823 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 824 | BGN_SAVE |
| 825 | res = gethostname(buf, (int) sizeof buf - 1); |
| 826 | END_SAVE |
| 827 | if (res < 0) |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 828 | return socket_error(); |
| 829 | buf[sizeof buf - 1] = '\0'; |
| 830 | return newstringobject(buf); |
| 831 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 832 | |
| 833 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 834 | /* Python interface to gethostbyname(name). */ |
| 835 | |
| 836 | /*ARGSUSED*/ |
| 837 | static object * |
| 838 | socket_gethostbyname(self, args) |
| 839 | object *self; |
| 840 | object *args; |
| 841 | { |
| 842 | object *name; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 843 | struct sockaddr_in addrbuf; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 844 | if (!getargs(args, "s", &name)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 845 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 846 | if (setipaddr(name, &addrbuf) < 0) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 847 | return NULL; |
| 848 | return makeipaddr(&addrbuf); |
| 849 | } |
| 850 | |
| 851 | |
| 852 | /* Python interface to getservbyname(name). |
| 853 | This only returns the port number, since the other info is already |
| 854 | known or not useful (like the list of aliases). */ |
| 855 | |
| 856 | /*ARGSUSED*/ |
| 857 | static object * |
| 858 | socket_getservbyname(self, args) |
| 859 | object *self; |
| 860 | object *args; |
| 861 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 862 | char *name, *proto; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 863 | struct servent *sp; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 864 | if (!getargs(args, "(ss)", &name, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 865 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 866 | BGN_SAVE |
| 867 | sp = getservbyname(name, proto); |
| 868 | END_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 869 | if (sp == NULL) { |
| 870 | err_setstr(SocketError, "service/proto not found"); |
| 871 | return NULL; |
| 872 | } |
| 873 | return newintobject((long) ntohs(sp->s_port)); |
| 874 | } |
| 875 | |
| 876 | |
| 877 | /* Python interface to socket(family, type, proto). |
| 878 | The third (protocol) argument is optional. |
| 879 | Return a new socket object. */ |
| 880 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 881 | /*ARGSUSED*/ |
| 882 | static object * |
| 883 | socket_socket(self, args) |
| 884 | object *self; |
| 885 | object *args; |
| 886 | { |
| 887 | sockobject *s; |
| 888 | int family, type, proto, fd; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 889 | if (args != NULL && is_tupleobject(args) && gettuplesize(args) == 3) { |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 890 | if (!getintintintarg(args, &family, &type, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 891 | return NULL; |
| 892 | } |
| 893 | else { |
| 894 | if (!getintintarg(args, &family, &type)) |
| 895 | return NULL; |
| 896 | proto = 0; |
| 897 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 898 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 899 | fd = socket(family, type, proto); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 900 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 901 | if (fd < 0) |
| 902 | return socket_error(); |
| 903 | s = newsockobject(fd, family, type, proto); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 904 | /* If the object can't be created, don't forget to close the |
| 905 | file descriptor again! */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 906 | if (s == NULL) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 907 | (void) close(fd); |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 908 | /* From now on, ignore SIGPIPE and let the error checking |
| 909 | do the work. */ |
| 910 | (void) signal(SIGPIPE, SIG_IGN); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 911 | return (object *) s; |
| 912 | } |
| 913 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 914 | |
| 915 | /* List of functions exported by this module. */ |
| 916 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 917 | static struct methodlist socket_methods[] = { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 918 | {"gethostbyname", socket_gethostbyname}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 919 | {"gethostname", socket_gethostname}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 920 | {"getservbyname", socket_getservbyname}, |
| 921 | {"socket", socket_socket}, |
| 922 | {NULL, NULL} /* Sentinel */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 923 | }; |
| 924 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 925 | |
| 926 | /* Convenience routine to export an integer value. |
| 927 | For simplicity, errors (which are unlikely anyway) are ignored. */ |
| 928 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 929 | static void |
| 930 | insint(d, name, value) |
| 931 | object *d; |
| 932 | char *name; |
| 933 | int value; |
| 934 | { |
| 935 | object *v = newintobject((long) value); |
| 936 | if (v == NULL) { |
| 937 | /* Don't bother reporting this error */ |
| 938 | err_clear(); |
| 939 | } |
| 940 | else { |
| 941 | dictinsert(d, name, v); |
| 942 | DECREF(v); |
| 943 | } |
| 944 | } |
| 945 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 946 | |
| 947 | /* Initialize this module. |
| 948 | This is called when the first 'import socket' is done, |
| 949 | via a table in config.c, if config.c is compiled with USE_SOCKET |
| 950 | defined. */ |
| 951 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 952 | void |
| 953 | initsocket() |
| 954 | { |
| 955 | object *m, *d; |
| 956 | |
| 957 | m = initmodule("socket", socket_methods); |
| 958 | d = getmoduledict(m); |
| 959 | SocketError = newstringobject("socket.error"); |
| 960 | if (SocketError == NULL || dictinsert(d, "error", SocketError) != 0) |
| 961 | fatal("can't define socket.error"); |
| 962 | insint(d, "AF_INET", AF_INET); |
| 963 | insint(d, "AF_UNIX", AF_UNIX); |
| 964 | insint(d, "SOCK_STREAM", SOCK_STREAM); |
| 965 | insint(d, "SOCK_DGRAM", SOCK_DGRAM); |
| 966 | insint(d, "SOCK_RAW", SOCK_RAW); |
| 967 | insint(d, "SOCK_SEQPACKET", SOCK_SEQPACKET); |
| 968 | insint(d, "SOCK_RDM", SOCK_RDM); |
| 969 | } |