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 | |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 27 | /* XXX Ought to fix getStr*arg calls to use getargs(args, "s#", ...) */ |
| 28 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 29 | /* |
| 30 | This module provides an interface to Berkeley socket IPC. |
| 31 | |
| 32 | Limitations: |
| 33 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 34 | - only AF_INET and AF_UNIX address families are supported |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 35 | - no asynchronous I/O (but read polling: avail) |
| 36 | - no read/write operations (use send/recv or makefile instead) |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 37 | - no flags on sendto/recvfrom operations |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 38 | - setsockopt() and getsockopt() only support integer options |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 39 | |
| 40 | Interface: |
| 41 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 42 | - socket.gethostname() --> host name (string) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 43 | - socket.gethostbyname(hostname) --> host IP address (string: 'dd.dd.dd.dd') |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 44 | - socket.getservbyname(servername, protocolname) --> port number |
| 45 | - socket.socket(family, type [, proto]) --> new socket object |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 46 | - 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] | 47 | - errors are reported as the exception socket.error |
| 48 | - an Internet socket address is a pair (hostname, port) |
| 49 | where hostname can be anything recognized by gethostbyname() |
| 50 | (including the dd.dd.dd.dd notation) and port is in host byte order |
| 51 | - where a hostname is returned, the dd.dd.dd.dd notation is used |
| 52 | - a UNIX domain socket is a string specifying the pathname |
| 53 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 54 | Socket methods: |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 55 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 56 | - s.accept() --> new socket object, sockaddr |
| 57 | - s.avail() --> boolean |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 58 | - s.setsockopt(level, optname, flag) --> None |
| 59 | - s.getsockopt(level, optname) --> flag |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 60 | - s.bind(sockaddr) --> None |
| 61 | - s.connect(sockaddr) --> None |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 62 | - s.listen(n) --> None |
| 63 | - s.makefile(mode) --> file object |
| 64 | - s.recv(nbytes) --> string |
| 65 | - s.recvfrom(nbytes) --> string, sockaddr |
| 66 | - s.send(string) --> None |
| 67 | - s.sendto(string, sockaddr) --> None |
| 68 | - s.shutdown(how) --> None |
| 69 | - s.close() --> None |
| 70 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 71 | */ |
| 72 | |
| 73 | #include "allobjects.h" |
| 74 | #include "modsupport.h" |
| 75 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 76 | #include <signal.h> |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 77 | #include <sys/types.h> |
| 78 | #include <sys/socket.h> |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 79 | #include <sys/time.h> /* Needed for struct timeval */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 80 | #include <netinet/in.h> |
| 81 | #include <sys/un.h> |
| 82 | #include <netdb.h> |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 83 | #ifdef _AIX /* I *think* this works */ |
Guido van Rossum | 0bb1a51 | 1991-11-27 14:55:18 +0000 | [diff] [blame] | 84 | /* AIX defines fd_set in a separate file. Sigh... */ |
| 85 | #include <sys/select.h> |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 86 | #endif |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 87 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 88 | |
| 89 | /* Global variable holding the exception type for errors detected |
| 90 | by this module (but not argument type or memory errors, etc.). */ |
| 91 | |
| 92 | static object *SocketError; |
| 93 | |
| 94 | |
| 95 | /* Convenience function to raise an error according to errno |
| 96 | and return a NULL pointer from a function. */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 97 | |
| 98 | static object * |
| 99 | socket_error() |
| 100 | { |
| 101 | return err_errno(SocketError); |
| 102 | } |
| 103 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 104 | |
| 105 | /* The object holding a socket. It holds some extra information, |
| 106 | like the address family, which is used to decode socket address |
| 107 | arguments properly. */ |
| 108 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 109 | typedef struct { |
| 110 | OB_HEAD |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 111 | int sock_fd; /* Socket file descriptor */ |
| 112 | int sock_family; /* Address family, e.g., AF_INET */ |
| 113 | int sock_type; /* Socket type, e.g., SOCK_STREAM */ |
| 114 | int sock_proto; /* Protocol type, usually 0 */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 115 | } sockobject; |
| 116 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 117 | |
| 118 | /* A forward reference to the Socktype type object. |
| 119 | The Socktype variable contains pointers to various functions, |
| 120 | some of which call newsocobject(), which uses Socktype, so |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 121 | there has to be a circular reference. */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 122 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 123 | extern typeobject Socktype; /* Forward */ |
| 124 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 125 | |
| 126 | /* Create a new socket object. |
| 127 | This just creates the object and initializes it. |
| 128 | If the creation fails, return NULL and set an exception (implicit |
| 129 | in NEWOBJ()). */ |
| 130 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 131 | static sockobject * |
| 132 | newsockobject(fd, family, type, proto) |
| 133 | int fd, family, type, proto; |
| 134 | { |
| 135 | sockobject *s; |
| 136 | s = NEWOBJ(sockobject, &Socktype); |
| 137 | if (s != NULL) { |
| 138 | s->sock_fd = fd; |
| 139 | s->sock_family = family; |
| 140 | s->sock_type = type; |
| 141 | s->sock_proto = proto; |
| 142 | } |
| 143 | return s; |
| 144 | } |
| 145 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 146 | |
| 147 | /* Convert a string specifying a host name or one of a few symbolic |
| 148 | names to a numeric IP address. This usually calls gethostbyname() |
| 149 | to do the work; the names "" and "<broadcast>" are special. |
| 150 | Return the length (should always be 4 bytes), or negative if |
| 151 | an error occurred; then an exception is raised. */ |
| 152 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 153 | static int |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 154 | setipaddr(name, addr_ret) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 155 | char *name; |
| 156 | struct sockaddr_in *addr_ret; |
| 157 | { |
| 158 | struct hostent *hp; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 159 | int d1, d2, d3, d4; |
| 160 | char ch; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 161 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 162 | if (name[0] == '\0') { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 163 | addr_ret->sin_addr.s_addr = INADDR_ANY; |
| 164 | return 4; |
| 165 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 166 | if (name[0] == '<' && strcmp(name, "<broadcast>") == 0) { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 167 | addr_ret->sin_addr.s_addr = INADDR_BROADCAST; |
| 168 | return 4; |
| 169 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 170 | if (sscanf(name, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && |
| 171 | 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && |
| 172 | 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { |
| 173 | addr_ret->sin_addr.s_addr = htonl( |
| 174 | ((long) d1 << 24) | ((long) d2 << 16) | |
| 175 | ((long) d3 << 8) | ((long) d4 << 0)); |
| 176 | return 4; |
| 177 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 178 | hp = gethostbyname(name); |
| 179 | if (hp == NULL) { |
| 180 | err_setstr(SocketError, "host not found"); |
| 181 | return -1; |
| 182 | } |
| 183 | memcpy((char *) &addr_ret->sin_addr, hp->h_addr, hp->h_length); |
| 184 | return hp->h_length; |
| 185 | } |
| 186 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 187 | |
| 188 | /* Generally useful convenience function to create a tuple from two |
| 189 | objects. This eats references to the objects; if either is NULL |
| 190 | it destroys the other and returns NULL without raising an exception |
| 191 | (assuming the function that was called to create the argument must |
| 192 | have raised an exception and returned NULL). */ |
| 193 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 194 | static object * |
| 195 | makepair(a, b) |
| 196 | object *a, *b; |
| 197 | { |
| 198 | object *pair = NULL; |
| 199 | if (a == NULL || b == NULL || (pair = newtupleobject(2)) == NULL) { |
| 200 | XDECREF(a); |
| 201 | XDECREF(b); |
| 202 | return NULL; |
| 203 | } |
| 204 | settupleitem(pair, 0, a); |
| 205 | settupleitem(pair, 1, b); |
| 206 | return pair; |
| 207 | } |
| 208 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 209 | |
| 210 | /* Create a string object representing an IP address. |
| 211 | This is always a string of the form 'dd.dd.dd.dd' (with variable |
| 212 | size numbers). */ |
| 213 | |
| 214 | static object * |
| 215 | makeipaddr(addr) |
| 216 | struct sockaddr_in *addr; |
| 217 | { |
| 218 | long x = ntohl(addr->sin_addr.s_addr); |
| 219 | char buf[100]; |
| 220 | sprintf(buf, "%d.%d.%d.%d", |
| 221 | (int) (x>>24) & 0xff, (int) (x>>16) & 0xff, |
| 222 | (int) (x>> 8) & 0xff, (int) (x>> 0) & 0xff); |
| 223 | return newstringobject(buf); |
| 224 | } |
| 225 | |
| 226 | |
| 227 | /* Create an object representing the given socket address, |
| 228 | suitable for passing it back to bind(), connect() etc. |
| 229 | The family field of the sockaddr structure is inspected |
| 230 | to determine what kind of address it really is. */ |
| 231 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 232 | /*ARGSUSED*/ |
| 233 | static object * |
| 234 | makesockaddr(addr, addrlen) |
| 235 | struct sockaddr *addr; |
| 236 | int addrlen; |
| 237 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 238 | switch (addr->sa_family) { |
| 239 | |
| 240 | case AF_INET: |
| 241 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 242 | struct sockaddr_in *a = (struct sockaddr_in *) addr; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 243 | return makepair(makeipaddr(a), |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 244 | newintobject((long) ntohs(a->sin_port))); |
| 245 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 246 | |
| 247 | case AF_UNIX: |
| 248 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 249 | struct sockaddr_un *a = (struct sockaddr_un *) addr; |
| 250 | return newstringobject(a->sun_path); |
| 251 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 252 | |
| 253 | /* More cases here... */ |
| 254 | |
| 255 | default: |
| 256 | err_setstr(SocketError, "return unknown socket address type"); |
| 257 | return NULL; |
| 258 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 259 | } |
| 260 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 261 | |
| 262 | /* Parse a socket address argument according to the socket object's |
| 263 | address family. Return 1 if the address was in the proper format, |
| 264 | 0 of not. The address is returned through addr_ret, its length |
| 265 | through len_ret. */ |
| 266 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 267 | static int |
| 268 | getsockaddrarg(s, args, addr_ret, len_ret) |
| 269 | sockobject *s; |
| 270 | object *args; |
| 271 | struct sockaddr **addr_ret; |
| 272 | int *len_ret; |
| 273 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 274 | switch (s->sock_family) { |
| 275 | |
| 276 | case AF_UNIX: |
| 277 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 278 | static struct sockaddr_un addr; |
| 279 | object *path; |
| 280 | int len; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 281 | if (!getStrarg(args, &path)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 282 | return 0; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 283 | if ((len = getstringsize(path)) > sizeof addr.sun_path) { |
| 284 | err_setstr(SocketError, "AF_UNIX path too long"); |
| 285 | return 0; |
| 286 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 287 | addr.sun_family = AF_UNIX; |
| 288 | memcpy(addr.sun_path, getstringvalue(path), len); |
| 289 | *addr_ret = (struct sockaddr *) &addr; |
| 290 | *len_ret = len + sizeof addr.sun_family; |
| 291 | return 1; |
| 292 | } |
| 293 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 294 | case AF_INET: |
| 295 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 296 | static struct sockaddr_in addr; |
| 297 | object *host; |
| 298 | int port; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 299 | if (!getStrintarg(args, &host, &port)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 300 | return 0; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 301 | if (setipaddr(getstringvalue(host), &addr) < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 302 | return 0; |
| 303 | addr.sin_family = AF_INET; |
| 304 | addr.sin_port = htons(port); |
| 305 | *addr_ret = (struct sockaddr *) &addr; |
| 306 | *len_ret = sizeof addr; |
| 307 | return 1; |
| 308 | } |
| 309 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 310 | /* More cases here... */ |
| 311 | |
| 312 | default: |
| 313 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 314 | return 0; |
| 315 | |
| 316 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 319 | |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame^] | 320 | /* Get the address length according to the socket object's address family. |
| 321 | Return 1 if the family is known, 0 otherwise. The length is returned |
| 322 | through len_ret. */ |
| 323 | |
| 324 | static int |
| 325 | getsockaddrlen(s, len_ret) |
| 326 | sockobject *s; |
| 327 | int *len_ret; |
| 328 | { |
| 329 | switch (s->sock_family) { |
| 330 | |
| 331 | case AF_UNIX: |
| 332 | { |
| 333 | *len_ret = sizeof (struct sockaddr_un); |
| 334 | return 1; |
| 335 | } |
| 336 | |
| 337 | case AF_INET: |
| 338 | { |
| 339 | *len_ret = sizeof (struct sockaddr_in); |
| 340 | return 1; |
| 341 | } |
| 342 | |
| 343 | /* More cases here... */ |
| 344 | |
| 345 | default: |
| 346 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 347 | return 0; |
| 348 | |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 353 | /* s.accept() method */ |
| 354 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 355 | static object * |
| 356 | sock_accept(s, args) |
| 357 | sockobject *s; |
| 358 | object *args; |
| 359 | { |
| 360 | char addrbuf[256]; |
| 361 | int addrlen, newfd; |
| 362 | object *res; |
| 363 | if (!getnoarg(args)) |
| 364 | return NULL; |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame^] | 365 | if (!getsockaddrlen(s, &addrlen)) |
| 366 | return NULL; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 367 | newfd = accept(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); |
| 368 | if (newfd < 0) |
| 369 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 370 | /* Create the new object with unspecified family, |
| 371 | to avoid calls to bind() etc. on it. */ |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 372 | res = makepair((object *) newsockobject(newfd, |
| 373 | s->sock_family, |
| 374 | s->sock_type, |
| 375 | s->sock_proto), |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 376 | makesockaddr((struct sockaddr *) addrbuf, addrlen)); |
| 377 | if (res == NULL) |
| 378 | close(newfd); |
| 379 | return res; |
| 380 | } |
| 381 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 382 | |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 383 | /* s.allowbroadcast() method */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 384 | /* XXX obsolete -- will disappear in next release */ |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 385 | |
| 386 | static object * |
| 387 | sock_allowbroadcast(s, args) |
| 388 | sockobject *s; |
| 389 | object *args; |
| 390 | { |
| 391 | int flag; |
| 392 | int res; |
| 393 | if (!getintarg(args, &flag)) |
| 394 | return NULL; |
| 395 | res = setsockopt(s->sock_fd, SOL_SOCKET, SO_BROADCAST, |
| 396 | &flag, sizeof flag); |
| 397 | if (res < 0) |
| 398 | return socket_error(); |
| 399 | INCREF(None); |
| 400 | return None; |
| 401 | } |
| 402 | |
| 403 | |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 404 | /* s.setsockopt() method */ |
| 405 | /* XXX this works for integer flags only */ |
| 406 | |
| 407 | static object * |
| 408 | sock_setsockopt(s, args) |
| 409 | sockobject *s; |
| 410 | object *args; |
| 411 | { |
| 412 | int level; |
| 413 | int optname; |
| 414 | int flag; |
| 415 | int res; |
| 416 | |
| 417 | if (!getargs(args, "(iii)", &level, &optname, &flag)) |
| 418 | return NULL; |
| 419 | res = setsockopt(s->sock_fd, level, optname, &flag, sizeof flag); |
| 420 | if (res < 0) |
| 421 | return socket_error(); |
| 422 | INCREF(None); |
| 423 | return None; |
| 424 | } |
| 425 | |
| 426 | |
| 427 | /* s.getsockopt() method */ |
| 428 | /* XXX this works for integer flags only */ |
| 429 | |
| 430 | static object * |
| 431 | sock_getsockopt(s, args) |
| 432 | sockobject *s; |
| 433 | object *args; |
| 434 | { |
| 435 | int level; |
| 436 | int optname; |
| 437 | int flag; |
| 438 | int flagsize; |
| 439 | int res; |
| 440 | |
| 441 | if (!getargs(args, "(ii)", &level, &optname)) |
| 442 | return NULL; |
| 443 | flagsize = sizeof flag; |
| 444 | flag = 0; |
| 445 | res = getsockopt(s->sock_fd, level, optname, &flag, &flagsize); |
| 446 | if (res < 0) |
| 447 | return socket_error(); |
| 448 | return newintobject(flag); |
| 449 | } |
| 450 | |
| 451 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 452 | /* s.avail() method */ |
| 453 | |
| 454 | static object * |
| 455 | sock_avail(s, args) |
| 456 | sockobject *s; |
| 457 | object *args; |
| 458 | { |
| 459 | struct timeval timeout; |
| 460 | fd_set readers; |
| 461 | int n; |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 462 | if (!getnoarg(args)) |
| 463 | return NULL; |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 464 | timeout.tv_sec = 0; |
| 465 | timeout.tv_usec = 0; |
| 466 | FD_ZERO(&readers); |
| 467 | FD_SET(s->sock_fd, &readers); |
| 468 | n = select(s->sock_fd+1, &readers, (fd_set *)0, (fd_set *)0, &timeout); |
| 469 | if (n < 0) |
| 470 | return socket_error(); |
| 471 | return newintobject((long) (n != 0)); |
| 472 | } |
| 473 | |
| 474 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 475 | /* s.bind(sockaddr) method */ |
| 476 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 477 | static object * |
| 478 | sock_bind(s, args) |
| 479 | sockobject *s; |
| 480 | object *args; |
| 481 | { |
| 482 | struct sockaddr *addr; |
| 483 | int addrlen; |
| 484 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 485 | return NULL; |
| 486 | if (bind(s->sock_fd, addr, addrlen) < 0) |
| 487 | return socket_error(); |
| 488 | INCREF(None); |
| 489 | return None; |
| 490 | } |
| 491 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 492 | |
| 493 | /* s.close() method. |
| 494 | Set the file descriptor to -1 so operations tried subsequently |
| 495 | will surely fail. */ |
| 496 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 497 | static object * |
| 498 | sock_close(s, args) |
| 499 | sockobject *s; |
| 500 | object *args; |
| 501 | { |
| 502 | if (!getnoarg(args)) |
| 503 | return NULL; |
| 504 | (void) close(s->sock_fd); |
| 505 | s->sock_fd = -1; |
| 506 | INCREF(None); |
| 507 | return None; |
| 508 | } |
| 509 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 510 | |
| 511 | /* s.connect(sockaddr) method */ |
| 512 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 513 | static object * |
| 514 | sock_connect(s, args) |
| 515 | sockobject *s; |
| 516 | object *args; |
| 517 | { |
| 518 | struct sockaddr *addr; |
| 519 | int addrlen; |
| 520 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 521 | return NULL; |
| 522 | if (connect(s->sock_fd, addr, addrlen) < 0) |
| 523 | return socket_error(); |
| 524 | INCREF(None); |
| 525 | return None; |
| 526 | } |
| 527 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 528 | |
| 529 | /* s.listen(n) method */ |
| 530 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 531 | static object * |
| 532 | sock_listen(s, args) |
| 533 | sockobject *s; |
| 534 | object *args; |
| 535 | { |
| 536 | int backlog; |
| 537 | if (!getintarg(args, &backlog)) |
| 538 | return NULL; |
| 539 | if (listen(s->sock_fd, backlog) < 0) |
| 540 | return socket_error(); |
| 541 | INCREF(None); |
| 542 | return None; |
| 543 | } |
| 544 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 545 | |
| 546 | /* s.makefile(mode) method. |
| 547 | Create a new open file object referring to a dupped version of |
| 548 | the socket's file descriptor. (The dup() call is necessary so |
| 549 | that the open file and socket objects may be closed independent |
| 550 | of each other.) |
| 551 | The mode argument specifies 'r' or 'w' passed to fdopen(). */ |
| 552 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 553 | static object * |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 554 | sock_makefile(s, args) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 555 | sockobject *s; |
| 556 | object *args; |
| 557 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 558 | extern int fclose PROTO((FILE *)); |
| 559 | object *mode; |
| 560 | int fd; |
| 561 | FILE *fp; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 562 | if (!getStrarg(args, &mode)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 563 | return NULL; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 564 | if ((fd = dup(s->sock_fd)) < 0 || |
| 565 | (fp = fdopen(fd, getstringvalue(mode))) == NULL) |
| 566 | return socket_error(); |
| 567 | return newopenfileobject(fp, "<socket>", getstringvalue(mode), fclose); |
| 568 | } |
| 569 | |
| 570 | |
| 571 | /* s.recv(nbytes) method */ |
| 572 | |
| 573 | static object * |
| 574 | sock_recv(s, args) |
| 575 | sockobject *s; |
| 576 | object *args; |
| 577 | { |
| 578 | int len, n, flags; |
| 579 | object *buf; |
| 580 | if (!getintintarg(args, &len, &flags)) { |
| 581 | err_clear(); |
| 582 | if (!getintarg(args, &len)) |
| 583 | return NULL; |
| 584 | flags = 0; |
| 585 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 586 | buf = newsizedstringobject((char *) 0, len); |
| 587 | if (buf == NULL) |
| 588 | return NULL; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 589 | n = recv(s->sock_fd, getstringvalue(buf), len, flags); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 590 | if (n < 0) |
| 591 | return socket_error(); |
| 592 | if (resizestring(&buf, n) < 0) |
| 593 | return NULL; |
| 594 | return buf; |
| 595 | } |
| 596 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 597 | |
| 598 | /* s.recvfrom(nbytes) method */ |
| 599 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 600 | static object * |
| 601 | sock_recvfrom(s, args) |
| 602 | sockobject *s; |
| 603 | object *args; |
| 604 | { |
| 605 | char addrbuf[256]; |
| 606 | object *buf; |
| 607 | int addrlen, len, n; |
| 608 | if (!getintarg(args, &len)) |
| 609 | return NULL; |
| 610 | buf = newsizedstringobject((char *) 0, len); |
| 611 | addrlen = sizeof addrbuf; |
| 612 | n = recvfrom(s->sock_fd, getstringvalue(buf), len, 0, |
| 613 | addrbuf, &addrlen); |
| 614 | if (n < 0) |
| 615 | return socket_error(); |
| 616 | if (resizestring(&buf, n) < 0) |
| 617 | return NULL; |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 618 | return makepair(buf, |
| 619 | makesockaddr((struct sockaddr *)addrbuf, addrlen)); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 620 | } |
| 621 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 622 | |
| 623 | /* s.send(data) method */ |
| 624 | |
| 625 | static object * |
| 626 | sock_send(s, args) |
| 627 | sockobject *s; |
| 628 | object *args; |
| 629 | { |
| 630 | object *buf; |
| 631 | int len, n, flags; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 632 | if (!getStrintarg(args, &buf, &flags)) { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 633 | err_clear(); |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 634 | if (!getStrarg(args, &buf)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 635 | return NULL; |
| 636 | flags = 0; |
| 637 | } |
| 638 | len = getstringsize(buf); |
| 639 | n = send(s->sock_fd, getstringvalue(buf), len, flags); |
| 640 | if (n < 0) |
| 641 | return socket_error(); |
| 642 | INCREF(None); |
| 643 | return None; |
| 644 | } |
| 645 | |
| 646 | |
| 647 | /* s.sendto(data, sockaddr) method */ |
| 648 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 649 | static object * |
| 650 | sock_sendto(s, args) |
| 651 | sockobject *s; |
| 652 | object *args; |
| 653 | { |
| 654 | object *buf; |
| 655 | struct sockaddr *addr; |
| 656 | int addrlen, len, n; |
| 657 | if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
| 658 | err_badarg(); |
| 659 | return NULL; |
| 660 | } |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 661 | if (!getStrarg(gettupleitem(args, 0), &buf) || |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 662 | !getsockaddrarg(s, gettupleitem(args, 1), &addr, &addrlen)) |
| 663 | return NULL; |
| 664 | len = getstringsize(buf); |
| 665 | n = sendto(s->sock_fd, getstringvalue(buf), len, 0, |
| 666 | addr, addrlen); |
| 667 | if (n < 0) |
| 668 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 669 | INCREF(None); |
| 670 | return None; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 671 | } |
| 672 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 673 | |
| 674 | /* s.shutdown(how) method */ |
| 675 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 676 | static object * |
| 677 | sock_shutdown(s, args) |
| 678 | sockobject *s; |
| 679 | object *args; |
| 680 | { |
| 681 | int how; |
| 682 | if (!getintarg(args, &how)) |
| 683 | return NULL; |
| 684 | if (shutdown(s->sock_fd, how) < 0) |
| 685 | return socket_error(); |
| 686 | INCREF(None); |
| 687 | return None; |
| 688 | } |
| 689 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 690 | |
| 691 | /* List of methods for socket objects */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 692 | |
| 693 | static struct methodlist sock_methods[] = { |
| 694 | {"accept", sock_accept}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 695 | {"avail", sock_avail}, |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 696 | {"allowbroadcast", sock_allowbroadcast}, |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 697 | {"setsockopt", sock_setsockopt}, |
| 698 | {"getsockopt", sock_getsockopt}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 699 | {"bind", sock_bind}, |
| 700 | {"close", sock_close}, |
| 701 | {"connect", sock_connect}, |
| 702 | {"listen", sock_listen}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 703 | {"makefile", sock_makefile}, |
| 704 | {"recv", sock_recv}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 705 | {"recvfrom", sock_recvfrom}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 706 | {"send", sock_send}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 707 | {"sendto", sock_sendto}, |
| 708 | {"shutdown", sock_shutdown}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 709 | {NULL, NULL} /* sentinel */ |
| 710 | }; |
| 711 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 712 | |
| 713 | /* Deallocate a socket object in response to the last DECREF(). |
| 714 | First close the file description. */ |
| 715 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 716 | static void |
| 717 | sock_dealloc(s) |
| 718 | sockobject *s; |
| 719 | { |
| 720 | (void) close(s->sock_fd); |
| 721 | DEL(s); |
| 722 | } |
| 723 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 724 | |
| 725 | /* Return a socket object's named attribute. */ |
| 726 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 727 | static object * |
| 728 | sock_getattr(s, name) |
| 729 | sockobject *s; |
| 730 | char *name; |
| 731 | { |
| 732 | return findmethod(sock_methods, (object *) s, name); |
| 733 | } |
| 734 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 735 | |
| 736 | /* Type object for socket objects. |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 737 | XXX This should be static, but some compilers don't grok the |
| 738 | XXX forward reference to it in that case... */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 739 | |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 740 | typeobject Socktype = { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 741 | OB_HEAD_INIT(&Typetype) |
| 742 | 0, |
| 743 | "socket", |
| 744 | sizeof(sockobject), |
| 745 | 0, |
| 746 | sock_dealloc, /*tp_dealloc*/ |
| 747 | 0, /*tp_print*/ |
| 748 | sock_getattr, /*tp_getattr*/ |
| 749 | 0, /*tp_setattr*/ |
| 750 | 0, /*tp_compare*/ |
| 751 | 0, /*tp_repr*/ |
| 752 | 0, /*tp_as_number*/ |
| 753 | 0, /*tp_as_sequence*/ |
| 754 | 0, /*tp_as_mapping*/ |
| 755 | }; |
| 756 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 757 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 758 | /* Python interface to gethostname(). */ |
| 759 | |
| 760 | /*ARGSUSED*/ |
| 761 | static object * |
| 762 | socket_gethostname(self, args) |
| 763 | object *self; |
| 764 | object *args; |
| 765 | { |
| 766 | char buf[1024]; |
| 767 | if (!getnoarg(args)) |
| 768 | return NULL; |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 769 | if (gethostname(buf, (int) sizeof buf - 1) < 0) |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 770 | return socket_error(); |
| 771 | buf[sizeof buf - 1] = '\0'; |
| 772 | return newstringobject(buf); |
| 773 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 774 | /* Python interface to gethostbyname(name). */ |
| 775 | |
| 776 | /*ARGSUSED*/ |
| 777 | static object * |
| 778 | socket_gethostbyname(self, args) |
| 779 | object *self; |
| 780 | object *args; |
| 781 | { |
| 782 | object *name; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 783 | struct sockaddr_in addrbuf; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 784 | if (!getStrarg(args, &name)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 785 | return NULL; |
| 786 | if (setipaddr(getstringvalue(name), &addrbuf) < 0) |
| 787 | return NULL; |
| 788 | return makeipaddr(&addrbuf); |
| 789 | } |
| 790 | |
| 791 | |
| 792 | /* Python interface to getservbyname(name). |
| 793 | This only returns the port number, since the other info is already |
| 794 | known or not useful (like the list of aliases). */ |
| 795 | |
| 796 | /*ARGSUSED*/ |
| 797 | static object * |
| 798 | socket_getservbyname(self, args) |
| 799 | object *self; |
| 800 | object *args; |
| 801 | { |
| 802 | object *name, *proto; |
| 803 | struct servent *sp; |
Guido van Rossum | 9c16d7f | 1992-01-27 16:49:54 +0000 | [diff] [blame] | 804 | if (!getStrStrarg(args, &name, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 805 | return NULL; |
| 806 | sp = getservbyname(getstringvalue(name), getstringvalue(proto)); |
| 807 | if (sp == NULL) { |
| 808 | err_setstr(SocketError, "service/proto not found"); |
| 809 | return NULL; |
| 810 | } |
| 811 | return newintobject((long) ntohs(sp->s_port)); |
| 812 | } |
| 813 | |
| 814 | |
| 815 | /* Python interface to socket(family, type, proto). |
| 816 | The third (protocol) argument is optional. |
| 817 | Return a new socket object. */ |
| 818 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 819 | /*ARGSUSED*/ |
| 820 | static object * |
| 821 | socket_socket(self, args) |
| 822 | object *self; |
| 823 | object *args; |
| 824 | { |
| 825 | sockobject *s; |
| 826 | int family, type, proto, fd; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 827 | if (args != NULL && is_tupleobject(args) && gettuplesize(args) == 3) { |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 828 | if (!getintintintarg(args, &family, &type, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 829 | return NULL; |
| 830 | } |
| 831 | else { |
| 832 | if (!getintintarg(args, &family, &type)) |
| 833 | return NULL; |
| 834 | proto = 0; |
| 835 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 836 | fd = socket(family, type, proto); |
| 837 | if (fd < 0) |
| 838 | return socket_error(); |
| 839 | s = newsockobject(fd, family, type, proto); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 840 | /* If the object can't be created, don't forget to close the |
| 841 | file descriptor again! */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 842 | if (s == NULL) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 843 | (void) close(fd); |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 844 | /* From now on, ignore SIGPIPE and let the error checking |
| 845 | do the work. */ |
| 846 | (void) signal(SIGPIPE, SIG_IGN); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 847 | return (object *) s; |
| 848 | } |
| 849 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 850 | |
| 851 | /* List of functions exported by this module. */ |
| 852 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 853 | static struct methodlist socket_methods[] = { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 854 | {"gethostbyname", socket_gethostbyname}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 855 | {"gethostname", socket_gethostname}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 856 | {"getservbyname", socket_getservbyname}, |
| 857 | {"socket", socket_socket}, |
| 858 | {NULL, NULL} /* Sentinel */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 859 | }; |
| 860 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 861 | |
| 862 | /* Convenience routine to export an integer value. |
| 863 | For simplicity, errors (which are unlikely anyway) are ignored. */ |
| 864 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 865 | static void |
| 866 | insint(d, name, value) |
| 867 | object *d; |
| 868 | char *name; |
| 869 | int value; |
| 870 | { |
| 871 | object *v = newintobject((long) value); |
| 872 | if (v == NULL) { |
| 873 | /* Don't bother reporting this error */ |
| 874 | err_clear(); |
| 875 | } |
| 876 | else { |
| 877 | dictinsert(d, name, v); |
| 878 | DECREF(v); |
| 879 | } |
| 880 | } |
| 881 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 882 | |
| 883 | /* Initialize this module. |
| 884 | This is called when the first 'import socket' is done, |
| 885 | via a table in config.c, if config.c is compiled with USE_SOCKET |
| 886 | defined. */ |
| 887 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 888 | void |
| 889 | initsocket() |
| 890 | { |
| 891 | object *m, *d; |
| 892 | |
| 893 | m = initmodule("socket", socket_methods); |
| 894 | d = getmoduledict(m); |
| 895 | SocketError = newstringobject("socket.error"); |
| 896 | if (SocketError == NULL || dictinsert(d, "error", SocketError) != 0) |
| 897 | fatal("can't define socket.error"); |
| 898 | insint(d, "AF_INET", AF_INET); |
| 899 | insint(d, "AF_UNIX", AF_UNIX); |
| 900 | insint(d, "SOCK_STREAM", SOCK_STREAM); |
| 901 | insint(d, "SOCK_DGRAM", SOCK_DGRAM); |
| 902 | insint(d, "SOCK_RAW", SOCK_RAW); |
| 903 | insint(d, "SOCK_SEQPACKET", SOCK_SEQPACKET); |
| 904 | insint(d, "SOCK_RDM", SOCK_RDM); |
| 905 | } |