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 | c89705d | 1992-11-26 08:54:07 +0000 | [diff] [blame^] | 60 | - s.getsockname() --> sockaddr |
| 61 | - s.getpeername() --> sockaddr |
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" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 75 | #include "ceval.h" |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 76 | |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 77 | #include "myselect.h" /* Implies <sys/types.h>, <sys/time.h>, <sys/param.h> */ |
| 78 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 79 | #include <signal.h> |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 80 | #include <sys/socket.h> |
| 81 | #include <netinet/in.h> |
| 82 | #include <sys/un.h> |
| 83 | #include <netdb.h> |
| 84 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 85 | |
| 86 | /* Global variable holding the exception type for errors detected |
| 87 | by this module (but not argument type or memory errors, etc.). */ |
| 88 | |
| 89 | static object *SocketError; |
| 90 | |
| 91 | |
| 92 | /* Convenience function to raise an error according to errno |
| 93 | and return a NULL pointer from a function. */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 94 | |
| 95 | static object * |
| 96 | socket_error() |
| 97 | { |
| 98 | return err_errno(SocketError); |
| 99 | } |
| 100 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 101 | |
| 102 | /* The object holding a socket. It holds some extra information, |
| 103 | like the address family, which is used to decode socket address |
| 104 | arguments properly. */ |
| 105 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 106 | typedef struct { |
| 107 | OB_HEAD |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 108 | int sock_fd; /* Socket file descriptor */ |
| 109 | int sock_family; /* Address family, e.g., AF_INET */ |
| 110 | int sock_type; /* Socket type, e.g., SOCK_STREAM */ |
| 111 | int sock_proto; /* Protocol type, usually 0 */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 112 | } sockobject; |
| 113 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 114 | |
| 115 | /* A forward reference to the Socktype type object. |
| 116 | The Socktype variable contains pointers to various functions, |
| 117 | some of which call newsocobject(), which uses Socktype, so |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 118 | there has to be a circular reference. */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 119 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 120 | extern typeobject Socktype; /* Forward */ |
| 121 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 122 | |
| 123 | /* Create a new socket object. |
| 124 | This just creates the object and initializes it. |
| 125 | If the creation fails, return NULL and set an exception (implicit |
| 126 | in NEWOBJ()). */ |
| 127 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 128 | static sockobject * |
| 129 | newsockobject(fd, family, type, proto) |
| 130 | int fd, family, type, proto; |
| 131 | { |
| 132 | sockobject *s; |
| 133 | s = NEWOBJ(sockobject, &Socktype); |
| 134 | if (s != NULL) { |
| 135 | s->sock_fd = fd; |
| 136 | s->sock_family = family; |
| 137 | s->sock_type = type; |
| 138 | s->sock_proto = proto; |
| 139 | } |
| 140 | return s; |
| 141 | } |
| 142 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 143 | |
| 144 | /* Convert a string specifying a host name or one of a few symbolic |
| 145 | names to a numeric IP address. This usually calls gethostbyname() |
| 146 | to do the work; the names "" and "<broadcast>" are special. |
| 147 | Return the length (should always be 4 bytes), or negative if |
| 148 | an error occurred; then an exception is raised. */ |
| 149 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 150 | static int |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 151 | setipaddr(name, addr_ret) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 152 | char *name; |
| 153 | struct sockaddr_in *addr_ret; |
| 154 | { |
| 155 | struct hostent *hp; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 156 | int d1, d2, d3, d4; |
| 157 | char ch; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 158 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 159 | if (name[0] == '\0') { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 160 | addr_ret->sin_addr.s_addr = INADDR_ANY; |
| 161 | return 4; |
| 162 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 163 | if (name[0] == '<' && strcmp(name, "<broadcast>") == 0) { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 164 | addr_ret->sin_addr.s_addr = INADDR_BROADCAST; |
| 165 | return 4; |
| 166 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 167 | if (sscanf(name, "%d.%d.%d.%d%c", &d1, &d2, &d3, &d4, &ch) == 4 && |
| 168 | 0 <= d1 && d1 <= 255 && 0 <= d2 && d2 <= 255 && |
| 169 | 0 <= d3 && d3 <= 255 && 0 <= d4 && d4 <= 255) { |
| 170 | addr_ret->sin_addr.s_addr = htonl( |
| 171 | ((long) d1 << 24) | ((long) d2 << 16) | |
| 172 | ((long) d3 << 8) | ((long) d4 << 0)); |
| 173 | return 4; |
| 174 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 175 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 176 | hp = gethostbyname(name); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 177 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 178 | if (hp == NULL) { |
| 179 | err_setstr(SocketError, "host not found"); |
| 180 | return -1; |
| 181 | } |
| 182 | memcpy((char *) &addr_ret->sin_addr, hp->h_addr, hp->h_length); |
| 183 | return hp->h_length; |
| 184 | } |
| 185 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 186 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 187 | /* Create a string object representing an IP address. |
| 188 | This is always a string of the form 'dd.dd.dd.dd' (with variable |
| 189 | size numbers). */ |
| 190 | |
| 191 | static object * |
| 192 | makeipaddr(addr) |
| 193 | struct sockaddr_in *addr; |
| 194 | { |
| 195 | long x = ntohl(addr->sin_addr.s_addr); |
| 196 | char buf[100]; |
| 197 | sprintf(buf, "%d.%d.%d.%d", |
| 198 | (int) (x>>24) & 0xff, (int) (x>>16) & 0xff, |
| 199 | (int) (x>> 8) & 0xff, (int) (x>> 0) & 0xff); |
| 200 | return newstringobject(buf); |
| 201 | } |
| 202 | |
| 203 | |
| 204 | /* Create an object representing the given socket address, |
| 205 | suitable for passing it back to bind(), connect() etc. |
| 206 | The family field of the sockaddr structure is inspected |
| 207 | to determine what kind of address it really is. */ |
| 208 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 209 | /*ARGSUSED*/ |
| 210 | static object * |
| 211 | makesockaddr(addr, addrlen) |
| 212 | struct sockaddr *addr; |
| 213 | int addrlen; |
| 214 | { |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 215 | if (addrlen == 0) { |
| 216 | /* No address -- may be recvfrom() from known socket */ |
| 217 | INCREF(None); |
| 218 | return None; |
| 219 | } |
| 220 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 221 | switch (addr->sa_family) { |
| 222 | |
| 223 | case AF_INET: |
| 224 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 225 | struct sockaddr_in *a = (struct sockaddr_in *) addr; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 226 | return mkvalue("Oi", makeipaddr(a), ntohs(a->sin_port)); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 227 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 228 | |
| 229 | case AF_UNIX: |
| 230 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 231 | struct sockaddr_un *a = (struct sockaddr_un *) addr; |
| 232 | return newstringobject(a->sun_path); |
| 233 | } |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 234 | |
| 235 | /* More cases here... */ |
| 236 | |
| 237 | default: |
| 238 | err_setstr(SocketError, "return unknown socket address type"); |
| 239 | return NULL; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 240 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 241 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 242 | } |
| 243 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 244 | |
| 245 | /* Parse a socket address argument according to the socket object's |
| 246 | address family. Return 1 if the address was in the proper format, |
| 247 | 0 of not. The address is returned through addr_ret, its length |
| 248 | through len_ret. */ |
| 249 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 250 | static int |
| 251 | getsockaddrarg(s, args, addr_ret, len_ret) |
| 252 | sockobject *s; |
| 253 | object *args; |
| 254 | struct sockaddr **addr_ret; |
| 255 | int *len_ret; |
| 256 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 257 | switch (s->sock_family) { |
| 258 | |
| 259 | case AF_UNIX: |
| 260 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 261 | static struct sockaddr_un addr; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 262 | char *path; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 263 | int len; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 264 | if (!getargs(args, "s#", &path, &len)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 265 | return 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 266 | if (len > sizeof addr.sun_path) { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 267 | err_setstr(SocketError, "AF_UNIX path too long"); |
| 268 | return 0; |
| 269 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 270 | addr.sun_family = AF_UNIX; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 271 | memcpy(addr.sun_path, path, len); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 272 | *addr_ret = (struct sockaddr *) &addr; |
| 273 | *len_ret = len + sizeof addr.sun_family; |
| 274 | return 1; |
| 275 | } |
| 276 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 277 | case AF_INET: |
| 278 | { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 279 | static struct sockaddr_in addr; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 280 | char *host; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 281 | int port; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 282 | if (!getargs(args, "(si)", &host, &port)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 283 | return 0; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 284 | if (setipaddr(host, &addr) < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 285 | return 0; |
| 286 | addr.sin_family = AF_INET; |
| 287 | addr.sin_port = htons(port); |
| 288 | *addr_ret = (struct sockaddr *) &addr; |
| 289 | *len_ret = sizeof addr; |
| 290 | return 1; |
| 291 | } |
| 292 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 293 | /* More cases here... */ |
| 294 | |
| 295 | default: |
| 296 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 297 | return 0; |
| 298 | |
| 299 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 300 | } |
| 301 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 302 | |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame] | 303 | /* Get the address length according to the socket object's address family. |
| 304 | Return 1 if the family is known, 0 otherwise. The length is returned |
| 305 | through len_ret. */ |
| 306 | |
| 307 | static int |
| 308 | getsockaddrlen(s, len_ret) |
| 309 | sockobject *s; |
| 310 | int *len_ret; |
| 311 | { |
| 312 | switch (s->sock_family) { |
| 313 | |
| 314 | case AF_UNIX: |
| 315 | { |
| 316 | *len_ret = sizeof (struct sockaddr_un); |
| 317 | return 1; |
| 318 | } |
| 319 | |
| 320 | case AF_INET: |
| 321 | { |
| 322 | *len_ret = sizeof (struct sockaddr_in); |
| 323 | return 1; |
| 324 | } |
| 325 | |
| 326 | /* More cases here... */ |
| 327 | |
| 328 | default: |
| 329 | err_setstr(SocketError, "getsockaddrarg: bad family"); |
| 330 | return 0; |
| 331 | |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 336 | /* s.accept() method */ |
| 337 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 338 | static object * |
| 339 | sock_accept(s, args) |
| 340 | sockobject *s; |
| 341 | object *args; |
| 342 | { |
| 343 | char addrbuf[256]; |
| 344 | int addrlen, newfd; |
| 345 | object *res; |
| 346 | if (!getnoarg(args)) |
| 347 | return NULL; |
Guido van Rossum | 710e1df | 1992-06-12 10:39:36 +0000 | [diff] [blame] | 348 | if (!getsockaddrlen(s, &addrlen)) |
| 349 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 350 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 351 | newfd = accept(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 352 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 353 | if (newfd < 0) |
| 354 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 355 | /* Create the new object with unspecified family, |
| 356 | to avoid calls to bind() etc. on it. */ |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 357 | res = mkvalue("OO", (object *) newsockobject(newfd, |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 358 | s->sock_family, |
| 359 | s->sock_type, |
| 360 | s->sock_proto), |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 361 | makesockaddr((struct sockaddr *) addrbuf, addrlen)); |
| 362 | if (res == NULL) |
| 363 | close(newfd); |
| 364 | return res; |
| 365 | } |
| 366 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 367 | |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 368 | /* s.allowbroadcast() method */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 369 | /* XXX obsolete -- will disappear in next release */ |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 370 | |
| 371 | static object * |
| 372 | sock_allowbroadcast(s, args) |
| 373 | sockobject *s; |
| 374 | object *args; |
| 375 | { |
| 376 | int flag; |
| 377 | int res; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 378 | if (!getargs(args, "i", &flag)) |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 379 | return NULL; |
| 380 | res = setsockopt(s->sock_fd, SOL_SOCKET, SO_BROADCAST, |
| 381 | &flag, sizeof flag); |
| 382 | if (res < 0) |
| 383 | return socket_error(); |
| 384 | INCREF(None); |
| 385 | return None; |
| 386 | } |
| 387 | |
| 388 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 389 | /* s.setsockopt() method. |
| 390 | With an integer third argument, sets an integer option. |
| 391 | With a string third argument, sets an option from a buffer; |
| 392 | use optional built-in module 'struct' to encode the string. */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 393 | |
| 394 | static object * |
| 395 | sock_setsockopt(s, args) |
| 396 | sockobject *s; |
| 397 | object *args; |
| 398 | { |
| 399 | int level; |
| 400 | int optname; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 401 | int res; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 402 | char *buf; |
| 403 | int buflen; |
| 404 | int flag; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 405 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 406 | if (getargs(args, "(iii)", &level, &optname, &flag)) { |
| 407 | buf = (char *) &flag; |
| 408 | buflen = sizeof flag; |
| 409 | } |
| 410 | else { |
| 411 | err_clear(); |
| 412 | if (!getargs(args, "(iis#)", &level, &optname, &buf, &buflen)) |
| 413 | return NULL; |
| 414 | } |
| 415 | res = setsockopt(s->sock_fd, level, optname, buf, buflen); |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 416 | if (res < 0) |
| 417 | return socket_error(); |
| 418 | INCREF(None); |
| 419 | return None; |
| 420 | } |
| 421 | |
| 422 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 423 | /* s.getsockopt() method. |
| 424 | With two arguments, retrieves an integer option. |
| 425 | With a third integer argument, retrieves a string buffer of that size; |
| 426 | use optional built-in module 'struct' to decode the string. */ |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 427 | |
| 428 | static object * |
| 429 | sock_getsockopt(s, args) |
| 430 | sockobject *s; |
| 431 | object *args; |
| 432 | { |
| 433 | int level; |
| 434 | int optname; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 435 | int res; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 436 | object *buf; |
| 437 | int buflen; |
| 438 | int flag; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 439 | |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 440 | if (getargs(args, "(ii)", &level, &optname)) { |
| 441 | int flag = 0; |
| 442 | int flagsize = sizeof flag; |
| 443 | res = getsockopt(s->sock_fd, level, optname, &flag, &flagsize); |
| 444 | if (res < 0) |
| 445 | return socket_error(); |
| 446 | return newintobject(flag); |
| 447 | } |
| 448 | err_clear(); |
| 449 | if (!getargs(args, "(iii)", &level, &optname, &buflen)) |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 450 | return NULL; |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 451 | if (buflen <= 0 || buflen > 1024) { |
| 452 | err_setstr(SocketError, "getsockopt buflen out of range"); |
| 453 | return NULL; |
| 454 | } |
| 455 | buf = newsizedstringobject((char *)NULL, buflen); |
| 456 | if (buf == NULL) |
| 457 | return NULL; |
| 458 | res = getsockopt(s->sock_fd, level, optname, getstringvalue(buf), |
| 459 | &buflen); |
| 460 | if (res < 0) { |
| 461 | DECREF(buf); |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 462 | return socket_error(); |
Guido van Rossum | aee0879 | 1992-09-08 09:05:33 +0000 | [diff] [blame] | 463 | } |
| 464 | resizestring(&buf, buflen); |
| 465 | return buf; |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 469 | /* s.avail() method */ |
| 470 | |
| 471 | static object * |
| 472 | sock_avail(s, args) |
| 473 | sockobject *s; |
| 474 | object *args; |
| 475 | { |
| 476 | struct timeval timeout; |
| 477 | fd_set readers; |
| 478 | int n; |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 479 | if (!getnoarg(args)) |
| 480 | return NULL; |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 481 | timeout.tv_sec = 0; |
| 482 | timeout.tv_usec = 0; |
| 483 | FD_ZERO(&readers); |
| 484 | FD_SET(s->sock_fd, &readers); |
| 485 | n = select(s->sock_fd+1, &readers, (fd_set *)0, (fd_set *)0, &timeout); |
| 486 | if (n < 0) |
| 487 | return socket_error(); |
| 488 | return newintobject((long) (n != 0)); |
| 489 | } |
| 490 | |
| 491 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 492 | /* s.bind(sockaddr) method */ |
| 493 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 494 | static object * |
| 495 | sock_bind(s, args) |
| 496 | sockobject *s; |
| 497 | object *args; |
| 498 | { |
| 499 | struct sockaddr *addr; |
| 500 | int addrlen; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 501 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 502 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 503 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 504 | BGN_SAVE |
| 505 | res = bind(s->sock_fd, addr, addrlen); |
| 506 | END_SAVE |
| 507 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 508 | return socket_error(); |
| 509 | INCREF(None); |
| 510 | return None; |
| 511 | } |
| 512 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 513 | |
| 514 | /* s.close() method. |
| 515 | Set the file descriptor to -1 so operations tried subsequently |
| 516 | will surely fail. */ |
| 517 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 518 | static object * |
| 519 | sock_close(s, args) |
| 520 | sockobject *s; |
| 521 | object *args; |
| 522 | { |
| 523 | if (!getnoarg(args)) |
| 524 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 525 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 526 | (void) close(s->sock_fd); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 527 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 528 | s->sock_fd = -1; |
| 529 | INCREF(None); |
| 530 | return None; |
| 531 | } |
| 532 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 533 | |
| 534 | /* s.connect(sockaddr) method */ |
| 535 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 536 | static object * |
| 537 | sock_connect(s, args) |
| 538 | sockobject *s; |
| 539 | object *args; |
| 540 | { |
| 541 | struct sockaddr *addr; |
| 542 | int addrlen; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 543 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 544 | if (!getsockaddrarg(s, args, &addr, &addrlen)) |
| 545 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 546 | BGN_SAVE |
| 547 | res = connect(s->sock_fd, addr, addrlen); |
| 548 | END_SAVE |
| 549 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 550 | return socket_error(); |
| 551 | INCREF(None); |
| 552 | return None; |
| 553 | } |
| 554 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 555 | |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 556 | /* s.fileno() method */ |
| 557 | |
| 558 | static object * |
| 559 | sock_fileno(s, args) |
| 560 | sockobject *s; |
| 561 | object *args; |
| 562 | { |
| 563 | if (!getnoarg(args)) |
| 564 | return NULL; |
| 565 | return newintobject((long) s->sock_fd); |
| 566 | } |
| 567 | |
| 568 | |
Guido van Rossum | c89705d | 1992-11-26 08:54:07 +0000 | [diff] [blame^] | 569 | /* s.getsockname() method */ |
| 570 | |
| 571 | static object * |
| 572 | sock_getsockname(s, args) |
| 573 | sockobject *s; |
| 574 | object *args; |
| 575 | { |
| 576 | char addrbuf[256]; |
| 577 | int addrlen, res; |
| 578 | if (!getnoarg(args)) |
| 579 | return NULL; |
| 580 | if (!getsockaddrlen(s, &addrlen)) |
| 581 | return NULL; |
| 582 | BGN_SAVE |
| 583 | res = getsockname(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); |
| 584 | END_SAVE |
| 585 | if (res < 0) |
| 586 | return socket_error(); |
| 587 | return makesockaddr((struct sockaddr *) addrbuf, addrlen); |
| 588 | } |
| 589 | |
| 590 | |
| 591 | /* s.getpeername() method */ |
| 592 | |
| 593 | static object * |
| 594 | sock_getpeername(s, args) |
| 595 | sockobject *s; |
| 596 | object *args; |
| 597 | { |
| 598 | char addrbuf[256]; |
| 599 | int addrlen, res; |
| 600 | if (!getnoarg(args)) |
| 601 | return NULL; |
| 602 | if (!getsockaddrlen(s, &addrlen)) |
| 603 | return NULL; |
| 604 | BGN_SAVE |
| 605 | res = getpeername(s->sock_fd, (struct sockaddr *) addrbuf, &addrlen); |
| 606 | END_SAVE |
| 607 | if (res < 0) |
| 608 | return socket_error(); |
| 609 | return makesockaddr((struct sockaddr *) addrbuf, addrlen); |
| 610 | } |
| 611 | |
| 612 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 613 | /* s.listen(n) method */ |
| 614 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 615 | static object * |
| 616 | sock_listen(s, args) |
| 617 | sockobject *s; |
| 618 | object *args; |
| 619 | { |
| 620 | int backlog; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 621 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 622 | if (!getintarg(args, &backlog)) |
| 623 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 624 | BGN_SAVE |
| 625 | res = listen(s->sock_fd, backlog); |
| 626 | END_SAVE |
| 627 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 628 | return socket_error(); |
| 629 | INCREF(None); |
| 630 | return None; |
| 631 | } |
| 632 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 633 | |
| 634 | /* s.makefile(mode) method. |
| 635 | Create a new open file object referring to a dupped version of |
| 636 | the socket's file descriptor. (The dup() call is necessary so |
| 637 | that the open file and socket objects may be closed independent |
| 638 | of each other.) |
| 639 | The mode argument specifies 'r' or 'w' passed to fdopen(). */ |
| 640 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 641 | static object * |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 642 | sock_makefile(s, args) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 643 | sockobject *s; |
| 644 | object *args; |
| 645 | { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 646 | extern int fclose PROTO((FILE *)); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 647 | char *mode; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 648 | int fd; |
| 649 | FILE *fp; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 650 | if (!getargs(args, "s", &mode)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 651 | return NULL; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 652 | if ((fd = dup(s->sock_fd)) < 0 || |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 653 | (fp = fdopen(fd, mode)) == NULL) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 654 | return socket_error(); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 655 | return newopenfileobject(fp, "<socket>", mode, fclose); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 656 | } |
| 657 | |
| 658 | |
| 659 | /* s.recv(nbytes) method */ |
| 660 | |
| 661 | static object * |
| 662 | sock_recv(s, args) |
| 663 | sockobject *s; |
| 664 | object *args; |
| 665 | { |
| 666 | int len, n, flags; |
| 667 | object *buf; |
| 668 | if (!getintintarg(args, &len, &flags)) { |
| 669 | err_clear(); |
| 670 | if (!getintarg(args, &len)) |
| 671 | return NULL; |
| 672 | flags = 0; |
| 673 | } |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 674 | buf = newsizedstringobject((char *) 0, len); |
| 675 | if (buf == NULL) |
| 676 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 677 | BGN_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 678 | n = recv(s->sock_fd, getstringvalue(buf), len, flags); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 679 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 680 | if (n < 0) |
| 681 | return socket_error(); |
| 682 | if (resizestring(&buf, n) < 0) |
| 683 | return NULL; |
| 684 | return buf; |
| 685 | } |
| 686 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 687 | |
| 688 | /* s.recvfrom(nbytes) method */ |
| 689 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 690 | static object * |
| 691 | sock_recvfrom(s, args) |
| 692 | sockobject *s; |
| 693 | object *args; |
| 694 | { |
| 695 | char addrbuf[256]; |
| 696 | object *buf; |
| 697 | int addrlen, len, n; |
| 698 | if (!getintarg(args, &len)) |
| 699 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 700 | if (!getsockaddrlen(s, &addrlen)) |
| 701 | return NULL; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 702 | buf = newsizedstringobject((char *) 0, len); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 703 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 704 | n = recvfrom(s->sock_fd, getstringvalue(buf), len, 0, |
| 705 | addrbuf, &addrlen); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 706 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 707 | if (n < 0) |
| 708 | return socket_error(); |
| 709 | if (resizestring(&buf, n) < 0) |
| 710 | return NULL; |
Guido van Rossum | 25bec8c | 1992-08-05 19:00:45 +0000 | [diff] [blame] | 711 | return mkvalue("OO", buf, |
Guido van Rossum | d15b733 | 1992-03-27 17:22:00 +0000 | [diff] [blame] | 712 | makesockaddr((struct sockaddr *)addrbuf, addrlen)); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 713 | } |
| 714 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 715 | |
| 716 | /* s.send(data) method */ |
| 717 | |
| 718 | static object * |
| 719 | sock_send(s, args) |
| 720 | sockobject *s; |
| 721 | object *args; |
| 722 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 723 | char *buf; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 724 | int len, n, flags; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 725 | if (!getargs(args, "(s#i)", &buf, &len, &flags)) { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 726 | err_clear(); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 727 | if (!getargs(args, "s#", &buf, &len)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 728 | return NULL; |
| 729 | flags = 0; |
| 730 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 731 | BGN_SAVE |
| 732 | n = send(s->sock_fd, buf, len, flags); |
| 733 | END_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 734 | if (n < 0) |
| 735 | return socket_error(); |
| 736 | INCREF(None); |
| 737 | return None; |
| 738 | } |
| 739 | |
| 740 | |
| 741 | /* s.sendto(data, sockaddr) method */ |
| 742 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 743 | static object * |
| 744 | sock_sendto(s, args) |
| 745 | sockobject *s; |
| 746 | object *args; |
| 747 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 748 | object *addro; |
| 749 | char *buf; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 750 | struct sockaddr *addr; |
| 751 | int addrlen, len, n; |
| 752 | if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
| 753 | err_badarg(); |
| 754 | return NULL; |
| 755 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 756 | if (!getargs(args, "(s#O)", &buf, &len, &addro) || |
| 757 | !getsockaddrarg(s, addro, &addr, &addrlen)) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 758 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 759 | BGN_SAVE |
| 760 | n = sendto(s->sock_fd, buf, len, 0, addr, addrlen); |
| 761 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 762 | if (n < 0) |
| 763 | return socket_error(); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 764 | INCREF(None); |
| 765 | return None; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 766 | } |
| 767 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 768 | |
| 769 | /* s.shutdown(how) method */ |
| 770 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 771 | static object * |
| 772 | sock_shutdown(s, args) |
| 773 | sockobject *s; |
| 774 | object *args; |
| 775 | { |
| 776 | int how; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 777 | int res; |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 778 | if (!getintarg(args, &how)) |
| 779 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 780 | BGN_SAVE |
| 781 | res = shutdown(s->sock_fd, how); |
| 782 | END_SAVE |
| 783 | if (res < 0) |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 784 | return socket_error(); |
| 785 | INCREF(None); |
| 786 | return None; |
| 787 | } |
| 788 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 789 | |
| 790 | /* List of methods for socket objects */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 791 | |
| 792 | static struct methodlist sock_methods[] = { |
| 793 | {"accept", sock_accept}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 794 | {"avail", sock_avail}, |
Guido van Rossum | e0e5edc | 1991-10-20 20:22:28 +0000 | [diff] [blame] | 795 | {"allowbroadcast", sock_allowbroadcast}, |
Guido van Rossum | 0e69587d | 1992-06-05 15:11:30 +0000 | [diff] [blame] | 796 | {"setsockopt", sock_setsockopt}, |
| 797 | {"getsockopt", sock_getsockopt}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 798 | {"bind", sock_bind}, |
| 799 | {"close", sock_close}, |
| 800 | {"connect", sock_connect}, |
Guido van Rossum | ed233a5 | 1992-06-23 09:07:03 +0000 | [diff] [blame] | 801 | {"fileno", sock_fileno}, |
Guido van Rossum | c89705d | 1992-11-26 08:54:07 +0000 | [diff] [blame^] | 802 | {"getsockname", sock_getsockname}, |
| 803 | {"getpeername", sock_getpeername}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 804 | {"listen", sock_listen}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 805 | {"makefile", sock_makefile}, |
| 806 | {"recv", sock_recv}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 807 | {"recvfrom", sock_recvfrom}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 808 | {"send", sock_send}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 809 | {"sendto", sock_sendto}, |
| 810 | {"shutdown", sock_shutdown}, |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 811 | {NULL, NULL} /* sentinel */ |
| 812 | }; |
| 813 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 814 | |
| 815 | /* Deallocate a socket object in response to the last DECREF(). |
| 816 | First close the file description. */ |
| 817 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 818 | static void |
| 819 | sock_dealloc(s) |
| 820 | sockobject *s; |
| 821 | { |
| 822 | (void) close(s->sock_fd); |
| 823 | DEL(s); |
| 824 | } |
| 825 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 826 | |
| 827 | /* Return a socket object's named attribute. */ |
| 828 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 829 | static object * |
| 830 | sock_getattr(s, name) |
| 831 | sockobject *s; |
| 832 | char *name; |
| 833 | { |
| 834 | return findmethod(sock_methods, (object *) s, name); |
| 835 | } |
| 836 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 837 | |
| 838 | /* Type object for socket objects. |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 839 | XXX This should be static, but some compilers don't grok the |
| 840 | XXX forward reference to it in that case... */ |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 841 | |
Guido van Rossum | 54ba21b | 1991-09-10 14:57:12 +0000 | [diff] [blame] | 842 | typeobject Socktype = { |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 843 | OB_HEAD_INIT(&Typetype) |
| 844 | 0, |
| 845 | "socket", |
| 846 | sizeof(sockobject), |
| 847 | 0, |
| 848 | sock_dealloc, /*tp_dealloc*/ |
| 849 | 0, /*tp_print*/ |
| 850 | sock_getattr, /*tp_getattr*/ |
| 851 | 0, /*tp_setattr*/ |
| 852 | 0, /*tp_compare*/ |
| 853 | 0, /*tp_repr*/ |
| 854 | 0, /*tp_as_number*/ |
| 855 | 0, /*tp_as_sequence*/ |
| 856 | 0, /*tp_as_mapping*/ |
| 857 | }; |
| 858 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 859 | |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 860 | /* Python interface to gethostname(). */ |
| 861 | |
| 862 | /*ARGSUSED*/ |
| 863 | static object * |
| 864 | socket_gethostname(self, args) |
| 865 | object *self; |
| 866 | object *args; |
| 867 | { |
| 868 | char buf[1024]; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 869 | int res; |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 870 | if (!getnoarg(args)) |
| 871 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 872 | BGN_SAVE |
| 873 | res = gethostname(buf, (int) sizeof buf - 1); |
| 874 | END_SAVE |
| 875 | if (res < 0) |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 876 | return socket_error(); |
| 877 | buf[sizeof buf - 1] = '\0'; |
| 878 | return newstringobject(buf); |
| 879 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 880 | |
| 881 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 882 | /* Python interface to gethostbyname(name). */ |
| 883 | |
| 884 | /*ARGSUSED*/ |
| 885 | static object * |
| 886 | socket_gethostbyname(self, args) |
| 887 | object *self; |
| 888 | object *args; |
| 889 | { |
| 890 | object *name; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 891 | struct sockaddr_in addrbuf; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 892 | if (!getargs(args, "s", &name)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 893 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 894 | if (setipaddr(name, &addrbuf) < 0) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 895 | return NULL; |
| 896 | return makeipaddr(&addrbuf); |
| 897 | } |
| 898 | |
| 899 | |
| 900 | /* Python interface to getservbyname(name). |
| 901 | This only returns the port number, since the other info is already |
| 902 | known or not useful (like the list of aliases). */ |
| 903 | |
| 904 | /*ARGSUSED*/ |
| 905 | static object * |
| 906 | socket_getservbyname(self, args) |
| 907 | object *self; |
| 908 | object *args; |
| 909 | { |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 910 | char *name, *proto; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 911 | struct servent *sp; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 912 | if (!getargs(args, "(ss)", &name, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 913 | return NULL; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 914 | BGN_SAVE |
| 915 | sp = getservbyname(name, proto); |
| 916 | END_SAVE |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 917 | if (sp == NULL) { |
| 918 | err_setstr(SocketError, "service/proto not found"); |
| 919 | return NULL; |
| 920 | } |
| 921 | return newintobject((long) ntohs(sp->s_port)); |
| 922 | } |
| 923 | |
| 924 | |
| 925 | /* Python interface to socket(family, type, proto). |
| 926 | The third (protocol) argument is optional. |
| 927 | Return a new socket object. */ |
| 928 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 929 | /*ARGSUSED*/ |
| 930 | static object * |
| 931 | socket_socket(self, args) |
| 932 | object *self; |
| 933 | object *args; |
| 934 | { |
| 935 | sockobject *s; |
| 936 | int family, type, proto, fd; |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 937 | if (args != NULL && is_tupleobject(args) && gettuplesize(args) == 3) { |
Guido van Rossum | 4dd2a7e | 1991-07-01 18:51:33 +0000 | [diff] [blame] | 938 | if (!getintintintarg(args, &family, &type, &proto)) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 939 | return NULL; |
| 940 | } |
| 941 | else { |
| 942 | if (!getintintarg(args, &family, &type)) |
| 943 | return NULL; |
| 944 | proto = 0; |
| 945 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 946 | BGN_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 947 | fd = socket(family, type, proto); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 948 | END_SAVE |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 949 | if (fd < 0) |
| 950 | return socket_error(); |
| 951 | s = newsockobject(fd, family, type, proto); |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 952 | /* If the object can't be created, don't forget to close the |
| 953 | file descriptor again! */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 954 | if (s == NULL) |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 955 | (void) close(fd); |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 956 | /* From now on, ignore SIGPIPE and let the error checking |
| 957 | do the work. */ |
| 958 | (void) signal(SIGPIPE, SIG_IGN); |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 959 | return (object *) s; |
| 960 | } |
| 961 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 962 | |
| 963 | /* List of functions exported by this module. */ |
| 964 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 965 | static struct methodlist socket_methods[] = { |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 966 | {"gethostbyname", socket_gethostbyname}, |
Guido van Rossum | 8119447 | 1991-07-27 21:42:02 +0000 | [diff] [blame] | 967 | {"gethostname", socket_gethostname}, |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 968 | {"getservbyname", socket_getservbyname}, |
| 969 | {"socket", socket_socket}, |
| 970 | {NULL, NULL} /* Sentinel */ |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 971 | }; |
| 972 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 973 | |
| 974 | /* Convenience routine to export an integer value. |
| 975 | For simplicity, errors (which are unlikely anyway) are ignored. */ |
| 976 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 977 | static void |
| 978 | insint(d, name, value) |
| 979 | object *d; |
| 980 | char *name; |
| 981 | int value; |
| 982 | { |
| 983 | object *v = newintobject((long) value); |
| 984 | if (v == NULL) { |
| 985 | /* Don't bother reporting this error */ |
| 986 | err_clear(); |
| 987 | } |
| 988 | else { |
| 989 | dictinsert(d, name, v); |
| 990 | DECREF(v); |
| 991 | } |
| 992 | } |
| 993 | |
Guido van Rossum | 30a685f | 1991-06-27 15:51:29 +0000 | [diff] [blame] | 994 | |
| 995 | /* Initialize this module. |
| 996 | This is called when the first 'import socket' is done, |
| 997 | via a table in config.c, if config.c is compiled with USE_SOCKET |
| 998 | defined. */ |
| 999 | |
Guido van Rossum | 6574b3e | 1991-06-25 21:36:08 +0000 | [diff] [blame] | 1000 | void |
| 1001 | initsocket() |
| 1002 | { |
| 1003 | object *m, *d; |
| 1004 | |
| 1005 | m = initmodule("socket", socket_methods); |
| 1006 | d = getmoduledict(m); |
| 1007 | SocketError = newstringobject("socket.error"); |
| 1008 | if (SocketError == NULL || dictinsert(d, "error", SocketError) != 0) |
| 1009 | fatal("can't define socket.error"); |
| 1010 | insint(d, "AF_INET", AF_INET); |
| 1011 | insint(d, "AF_UNIX", AF_UNIX); |
| 1012 | insint(d, "SOCK_STREAM", SOCK_STREAM); |
| 1013 | insint(d, "SOCK_DGRAM", SOCK_DGRAM); |
| 1014 | insint(d, "SOCK_RAW", SOCK_RAW); |
| 1015 | insint(d, "SOCK_SEQPACKET", SOCK_SEQPACKET); |
| 1016 | insint(d, "SOCK_RDM", SOCK_RDM); |
| 1017 | } |