The R13B03 release.OTP_R13B03

1 files changed, 228 insertions, 0 deletions

diff --git a/lib/erl_interface/src/epmd/epmd_publish.c b/lib/erl_interface/src/epmd/epmd_publish.c
new file mode 100644
index 0000000000..09b3dce43b
--- /dev/null
+++ b/lib/erl_interface/src/epmd/epmd_publish.c
@@ -0,0 +1,228 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+
+#include "eidef.h"
+
+#ifdef __WIN32__
+#include <winsock2.h>
+#include <windows.h>
+#include <winbase.h>
+
+#elif  VXWORKS
+#include <vxWorks.h>
+#include <ifLib.h>
+#include <sockLib.h>
+#include <inetLib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#else
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "ei_internal.h"
+#include "putget.h"
+#include "ei_epmd.h"
+#include "ei_portio.h"
+
+
+/* publish our listen port and alive name */
+/* return the (useless) creation number */
+static int ei_epmd_r3_publish (int port, const char *alive, unsigned ms)
+{
+  char buf[EPMDBUF];
+  char *s = buf;
+  int fd;
+  int len = strlen(alive) + 3;
+  int res,creation;
+
+  s = buf;
+  put16be(s,len);
+  put8(s,EI_EPMD_ALIVE_REQ);
+  put16be(s,port); 
+  strcpy(s, alive);
+
+  if ((fd = ei_epmd_connect_tmo(NULL,ms)) < 0) return fd;
+
+  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
+    closesocket(fd);
+    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    return -1;
+  }
+
+  EI_TRACE_CONN2("ei_epmd_r3_publish",
+		 "-> ALIVE_REQ alive=%s port=%d",alive,port);
+
+  if ((res = ei_read_fill_t(fd, buf, 3, ms)) != 3) {
+    closesocket(fd);
+    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    return -1;
+  }
+
+  s = buf;
+  if ((res=get8(s)) != EI_EPMD_ALIVE_OK_RESP) {
+      EI_TRACE_ERR1("ei_epmd_r3_publish",
+		    "<- ALIVE_NOK result=%d (failure)",res);
+    closesocket(fd);
+    erl_errno = EIO;
+    return -1;
+  }
+
+  creation = get16be(s);
+
+  EI_TRACE_CONN1("ei_epmd_r3_publish","<- ALIVE_OK creation=%d",creation);
+
+  /* Don't close fd here! It keeps us registered with epmd */
+
+  /* probably should save fd so we can close it later... */
+  /* epmd_saveconn(OPEN,fd,alive); */
+
+  /* return the creation number, for no good reason */
+  /* return creation; */
+
+  /* no! return the descriptor */
+  return fd;
+}
+
+/* publish our listen port and alive name */
+/* return the (useless) creation number */
+/* this protocol is a lot more complex than the old one */
+static int ei_epmd_r4_publish (int port, const char *alive, unsigned ms)
+{
+  char buf[EPMDBUF];
+  char *s = buf;
+  int fd;
+  int elen = 0;
+  int nlen = strlen(alive);
+  int len = elen + nlen + 13; /* hard coded: be careful! */
+  int n;
+  int res, creation;
+  
+  s = buf;
+  put16be(s,len);
+
+  put8(s,EI_EPMD_ALIVE2_REQ);
+  put16be(s,port); /* port number */
+  put8(s,'h');            /* h = r4 hidden node */
+  put8(s, EI_MYPROTO);      /* protocol 0 ?? */
+  put16be(s,EI_DIST_HIGH);   /* highest understood version: 1 = R4 */
+  put16be(s,EI_DIST_LOW);    /* lowest:  0 = R3 */
+  put16be(s,nlen);        /* length of alivename */
+  strcpy(s, alive);
+  s += nlen;
+  put16be(s,elen);        /* length of extra string = 0 */
+                          /* no extra string */
+
+  if ((fd = ei_epmd_connect_tmo(NULL,ms)) < 0) return fd;
+
+  if ((res = ei_write_fill_t(fd, buf, len+2, ms)) != len+2) {
+    closesocket(fd);
+    erl_errno = (res == -2) ? ETIMEDOUT : EIO;
+    return -1;
+  }
+
+  EI_TRACE_CONN6("ei_epmd_r4_publish",
+		 "-> ALIVE2_REQ alive=%s port=%d ntype=%d "
+		 "proto=%d dist-high=%d dist-low=%d",
+		 alive,port,'H',EI_MYPROTO,EI_DIST_HIGH,EI_DIST_LOW);
+  
+  if ((n = ei_read_fill_t(fd, buf, 4, ms)) != 4) {
+    EI_TRACE_ERR0("ei_epmd_r4_publish","<- CLOSE");
+    closesocket(fd);
+    erl_errno = (n == -2) ? ETIMEDOUT : EIO;
+    return -2;			/* version mismatch */
+  }
+  /* Don't close fd here! It keeps us registered with epmd */
+  s = buf;
+  if (((res=get8(s)) != EI_EPMD_ALIVE2_RESP)) {  /* response */
+    EI_TRACE_ERR1("ei_epmd_r4_publish","<- unknown (%d)",res);
+    EI_TRACE_ERR0("ei_epmd_r4_publish","-> CLOSE");
+    closesocket(fd);
+    erl_errno = EIO;
+    return -1;
+  }
+
+  EI_TRACE_CONN0("ei_epmd_r4_publish","<- ALIVE2_RESP");
+
+  if (((res=get8(s)) != 0)) {           /* 0 == success */
+      EI_TRACE_ERR1("ei_epmd_r4_publish"," result=%d (fail)",res);
+    closesocket(fd);
+    erl_errno = EIO;
+    return -1;
+  }
+
+  creation = get16be(s);
+
+  EI_TRACE_CONN2("ei_epmd_r4_publish",
+		 " result=%d (ok) creation=%d",res,creation);
+
+  /* probably should save fd so we can close it later... */
+  /* epmd_saveconn(OPEN,fd,alive); */
+
+  /* return the creation number, for no good reason */
+  /* return creation;*/
+
+  /* no - return the descriptor */
+  return fd;
+}
+
+int ei_epmd_publish(int port, const char *alive)
+{
+    return ei_epmd_publish_tmo(port, alive, 0);
+}
+
+int ei_epmd_publish_tmo(int port, const char *alive, unsigned ms)
+{
+  int i;
+
+  /* try the new one first, then the old one */
+  i = ei_epmd_r4_publish(port,alive, ms);
+
+  /* -2: new protocol not understood */
+  if (i == -2) i = ei_epmd_r3_publish(port,alive, ms);
+
+  return i;
+}
+
+
+/* 
+ * Publish a name for our C-node. 
+ * a file descriptor is returned - close it to unpublish.
+ * 
+ */
+int ei_publish(ei_cnode* ec, int port)
+{
+  return ei_epmd_publish(port, ei_thisalivename(ec));
+}
+
+int ei_publish_tmo(ei_cnode* ec, int port, unsigned ms)
+{
+  return ei_epmd_publish_tmo(port, ei_thisalivename(ec), ms);
+}