* ext/socket/rubysocket.h (rb_cSockOpt): declared.

  (sockopt_new): ditto.
  (Init_sockopt): ditto.

* ext/socket/init.c (Init_socket_init): call Init_sockopt.

* ext/socket/depend: add dependency for option.o

* ext/socket/mkconstants.rb: generate intern_level, intern_so_optname,
  intern_ip_optname, intern_ipv6_optname, intern_tcp_optname,
  intern_udp_optname and intern_scm_optname.

* ext/socket/extconf.rb: add option.o.

* ext/socket/basicsocket.c (bsock_setsockopt): accept Socket::Option
  object.
  (bsock_getsockopt): return Socket::Option object.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 373 insertions, 0 deletions

diff --git a/ext/socket/option.c b/ext/socket/option.c
new file mode 100644
index 0000000000..f815528fef
--- /dev/null
+++ b/ext/socket/option.c
@@ -0,0 +1,373 @@
+#include "rubysocket.h"
+
+VALUE rb_cSockOpt;
+
+static VALUE
+constant_to_sym(int constant, ID (*intern_const)(int))
+{
+    ID name = intern_const(constant);
+    if (name) {
+        return ID2SYM(name);
+    }
+
+    return INT2NUM(constant);
+}
+
+static VALUE
+optname_to_sym(int level, int optname)
+{
+    switch (level) {
+      case SOL_SOCKET:
+        return constant_to_sym(optname, intern_so_optname);
+      case IPPROTO_IP:
+        return constant_to_sym(optname, intern_ip_optname);
+      case IPPROTO_IPV6:
+        return constant_to_sym(optname, intern_ipv6_optname);
+      case IPPROTO_TCP:
+        return constant_to_sym(optname, intern_tcp_optname);
+      case IPPROTO_UDP:
+        return constant_to_sym(optname, intern_udp_optname);
+      default:
+        return INT2NUM(optname);
+    }
+}
+
+static VALUE
+sockopt_initialize(VALUE self, VALUE vlevel, VALUE voptname, VALUE data)
+{
+    int level;
+    StringValue(data);
+    level = level_arg(vlevel);
+    rb_ivar_set(self, rb_intern("level"), INT2NUM(level));
+    rb_ivar_set(self, rb_intern("optname"), INT2NUM(optname_arg(level, voptname)));
+    rb_ivar_set(self, rb_intern("data"), data);
+    return self;
+}
+
+VALUE
+sockopt_new(int level, int optname, VALUE data)
+{
+    NEWOBJ(obj, struct RObject);
+    OBJSETUP(obj, rb_cSockOpt, T_OBJECT);
+    StringValue(data);
+    sockopt_initialize((VALUE)obj, INT2NUM(level), INT2NUM(optname), data);
+    return (VALUE)obj;
+}
+
+/*
+ * call-seq:
+ *   sockopt.level => integer
+ *
+ * returns the socket level as an integer.
+ *
+ *   p Socket::Option.new(:IPV6, :RECVPKTINFO, [1].pack("i!")).level
+ */
+static VALUE
+sockopt_level(VALUE self)
+{
+    return rb_attr_get(self, rb_intern("level"));
+}
+
+/*
+ * call-seq:
+ *   sockopt.optname => integer
+ *
+ * returns the socket option name as an integer.
+ *
+ *   p Socket::Option.new(:IPV6, :RECVPKTINFO, [1].pack("i!")).optname
+ */
+static VALUE
+sockopt_optname(VALUE self)
+{
+    return rb_attr_get(self, rb_intern("optname"));
+}
+
+/*
+ * call-seq:
+ *   sockopt.data => string
+ *
+ * returns the socket option data as a string.
+ *
+ *   p Socket::Option.new(:IPV6, :PKTINFO, [1].pack("i!")).data
+ */
+static VALUE
+sockopt_data(VALUE self)
+{
+    return rb_attr_get(self, rb_intern("data"));
+}
+
+/*
+ * call-seq:
+ *   Socket::Option.int(level, optname, integer) => sockopt
+ *
+ * Creates a new Socket::Option object which contains an int as data.
+ *
+ * The size and endian is dependent on the host. 
+ *
+ *   p Socket::Option.int(:SOCKET, :KEEPALIVE, 1)
+ *   #=> #<Socket::Option: SOCKET KEEPALIVE 1>
+ */
+static VALUE
+sockopt_s_int(VALUE klass, VALUE vlevel, VALUE voptname, VALUE vint)
+{
+    int level = level_arg(vlevel);
+    int optname = optname_arg(level, voptname);
+    int i = NUM2INT(vint);
+    return sockopt_new(level, optname, rb_str_new((char*)&i, sizeof(i)));
+}
+
+/*
+ * call-seq:
+ *   sockopt.int => integer
+ *
+ * Returns the data in _sockopt_ as an int.
+ *
+ * The size and endian is dependent on the host. 
+ *
+ *   sockopt = Socket::Option.int(:SOCKET, :KEEPALIVE, 1)
+ *   p sockopt.int => 1
+ */
+static VALUE
+sockopt_int(VALUE self)
+{
+    int i;
+    VALUE data = sockopt_data(self);
+    StringValue(data);
+    if (RSTRING_LEN(data) != sizeof(int))
+        rb_raise(rb_eTypeError, "size differ.  expected as sizeof(int)=%d but %ld",
+                 (int)sizeof(int), (long)RSTRING_LEN(data));
+    memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
+    return INT2NUM(i);
+}
+
+static int
+inspect_int(int level, int optname, VALUE data, VALUE ret)
+{
+    if (RSTRING_LEN(data) == sizeof(int)) {
+        int i;
+        memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
+        rb_str_catf(ret, " %d", i);
+        return 0;
+    }
+    else {
+        return -1;
+    }
+}
+
+static int
+inspect_uint(int level, int optname, VALUE data, VALUE ret)
+{
+    if (RSTRING_LEN(data) == sizeof(int)) {
+        unsigned int i;
+        memcpy((char*)&i, RSTRING_PTR(data), sizeof(unsigned int));
+        rb_str_catf(ret, " %u", i);
+        return 0;
+    }
+    else {
+        return -1;
+    }
+}
+
+#if defined(SOL_SOCKET) && defined(SO_LINGER) /* POSIX */
+static int
+inspect_linger(int level, int optname, VALUE data, VALUE ret)
+{
+    if (RSTRING_LEN(data) == sizeof(struct linger)) {
+        struct linger s;
+        memcpy((char*)&s, RSTRING_PTR(data), sizeof(s));
+        rb_str_catf(ret, " onoff:%d linger:%d", s.l_onoff, s.l_linger);
+        return 0;
+    }
+    else {
+        return -1;
+    }
+}
+#endif
+
+#if defined(SOL_SOCKET) && defined(SO_TYPE) /* POSIX */
+static int
+inspect_socktype(int level, int optname, VALUE data, VALUE ret)
+{
+    if (RSTRING_LEN(data) == sizeof(int)) {
+        int i;
+        ID id;
+        memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
+        id = intern_socktype(i);
+        if (id)
+            rb_str_catf(ret, " %s", rb_id2name(id));
+        else
+            rb_str_catf(ret, " %d", i);
+        return 0;
+    }
+    else {
+        return -1;
+    }
+}
+#endif
+
+static int
+inspect_timeval(int level, int optname, VALUE data, VALUE ret)
+{
+    if (RSTRING_LEN(data) == sizeof(struct linger)) {
+        struct timeval s;
+        memcpy((char*)&s, RSTRING_PTR(data), sizeof(s));
+        rb_str_catf(ret, " %ld.%06ldsec", (long)s.tv_sec, (long)s.tv_usec);
+        return 0;
+    }
+    else {
+        return -1;
+    }
+}
+
+static VALUE
+sockopt_inspect(VALUE self)
+{
+    int level = NUM2INT(sockopt_level(self));
+    int optname = NUM2INT(sockopt_optname(self));
+    VALUE data = sockopt_data(self);
+    VALUE v, ret;
+    ID level_id;
+
+    StringValue(data);
+
+    ret = rb_sprintf("#<%s: ", rb_obj_classname(self));
+
+    level_id = intern_level(level);
+    if (level_id)
+        rb_str_cat2(ret, rb_id2name(level_id));
+    else
+        rb_str_catf(ret, "level:%d", level);
+
+    v = optname_to_sym(level, optname);
+    if (SYMBOL_P(v))
+        rb_str_catf(ret, " %s", rb_id2name(SYM2ID(v)));
+    else
+        rb_str_catf(ret, " optname:%d", optname);
+
+    switch (level) {
+#    if defined(SOL_SOCKET)
+      case SOL_SOCKET:
+        switch (optname) {
+#        if defined(SO_DEBUG) /* POSIX */
+          case SO_DEBUG: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_ERROR) /* POSIX */
+          case SO_ERROR: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_TYPE) /* POSIX */
+          case SO_TYPE: if (inspect_socktype(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_ACCEPTCONN) /* POSIX */
+          case SO_ACCEPTCONN: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_BROADCAST) /* POSIX */
+          case SO_BROADCAST: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_REUSEADDR) /* POSIX */
+          case SO_REUSEADDR: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_KEEPALIVE) /* POSIX */
+          case SO_KEEPALIVE: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_OOBINLINE) /* POSIX */
+          case SO_OOBINLINE: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_SNDBUF) /* POSIX */
+          case SO_SNDBUF: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_RCVBUF) /* POSIX */
+          case SO_RCVBUF: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_DONTROUTE) /* POSIX */
+          case SO_DONTROUTE: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_RCVLOWAT) /* POSIX */
+          case SO_RCVLOWAT: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_SNDLOWAT) /* POSIX */
+          case SO_SNDLOWAT: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+
+#        if defined(SO_LINGER) /* POSIX */
+          case SO_LINGER: if (inspect_linger(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_RCVTIMEO) /* POSIX */
+          case SO_RCVTIMEO: if (inspect_timeval(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(SO_SNDTIMEO) /* POSIX */
+          case SO_SNDTIMEO: if (inspect_timeval(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+
+          default: goto dump;
+        }
+        break;
+#    endif
+
+#    if defined(IPPROTO_IPV6)
+      case IPPROTO_IPV6:
+        switch (optname) {
+          /* IPV6_JOIN_GROUP ipv6_mreq, IPV6_LEAVE_GROUP ipv6_mreq */
+#        if defined(IPV6_MULTICAST_HOPS) /* POSIX */
+          case IPV6_MULTICAST_HOPS: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(IPV6_MULTICAST_IF) /* POSIX */
+          case IPV6_MULTICAST_IF: if (inspect_uint(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(IPV6_MULTICAST_LOOP) /* POSIX */
+          case IPV6_MULTICAST_LOOP: if (inspect_uint(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(IPV6_UNICAST_HOPS) /* POSIX */
+          case IPV6_UNICAST_HOPS: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+#        if defined(IPV6_V6ONLY) /* POSIX */
+          case IPV6_V6ONLY: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+          default: goto dump;
+        }
+        break;
+#    endif
+
+#    if defined(IPPROTO_TCP)
+      case IPPROTO_TCP:
+        switch (optname) {
+#        if defined(TCP_NODELAY) /* POSIX */
+          case TCP_NODELAY: if (inspect_int(level, optname, data, ret) == -1) goto dump; break;
+#        endif
+          default: goto dump;
+        }
+        break;
+#    endif
+
+      default:
+      dump:
+        data = rb_str_dump(data);
+        rb_str_catf(ret, " %s", StringValueCStr(data));
+    }
+
+    rb_str_cat2(ret, ">");
+
+    return ret;
+}
+
+static VALUE
+sockopt_unpack(VALUE self, VALUE template)
+{
+    return rb_funcall(sockopt_data(self), rb_intern("unpack"), 1, template);
+}
+
+void
+Init_sockopt(void)
+{
+    rb_cSockOpt = rb_define_class_under(rb_cSocket, "Option", rb_cObject);
+    rb_define_method(rb_cSockOpt, "initialize", sockopt_initialize, 3);
+    rb_define_method(rb_cSockOpt, "level", sockopt_level, 0);
+    rb_define_method(rb_cSockOpt, "optname", sockopt_optname, 0);
+    rb_define_method(rb_cSockOpt, "data", sockopt_data, 0);
+    rb_define_method(rb_cSockOpt, "inspect", sockopt_inspect, 0);
+
+    rb_define_singleton_method(rb_cSockOpt, "int", sockopt_s_int, 3);
+    rb_define_method(rb_cSockOpt, "int", sockopt_int, 0);
+
+    rb_define_method(rb_cSockOpt, "unpack", sockopt_unpack, 1);
+}
+