The R13B03 release.OTP_R13B03

1 files changed, 127 insertions, 0 deletions

diff --git a/erts/epmd/src/epmd_cli.c b/erts/epmd/src/epmd_cli.c
new file mode 100644
index 0000000000..c12f711bc5
--- /dev/null
+++ b/erts/epmd/src/epmd_cli.c
@@ -0,0 +1,127 @@
+/*
+ * %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%
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+#include "epmd.h"     /* Renamed from 'epmd_r4.h' */
+#include "epmd_int.h"
+
+/* forward declarations */
+
+static int conn_to_epmd(EpmdVars*);
+static int read_fill(int,char*,int);
+
+
+void kill_epmd(EpmdVars *g)
+{
+    char buf[5];
+    int fd, rval;
+
+    fd = conn_to_epmd(g);
+    put_int16(1,buf);
+    buf[2] = EPMD_KILL_REQ;
+    if (write(fd, buf, 3) != 3) {
+	printf("epmd: Can't write to epmd\n");
+	epmd_cleanup_exit(g,1);
+    }
+    if ((rval = read_fill(fd,buf,2)) == 2) {
+	printf("Killed\n");
+	epmd_cleanup_exit(g,0);
+    } else if (rval < 0) {
+	printf("epmd: failed to read answer from local epmd\n");
+	epmd_cleanup_exit(g,1);
+    } else { 			/* rval is now 0 or 1 */
+	buf[rval] = '\0';
+	printf("epmd: local epmd responded with <%s>\n", buf);
+	epmd_cleanup_exit(g,1);
+    }
+}
+
+/* what == EPMD_NAMES_REQ || EPMD_DUMP_REQ */
+
+void epmd_call(EpmdVars *g,int what)
+{
+    char buf[OUTBUF_SIZE];
+    int rval,fd,i,j;
+    
+    fd = conn_to_epmd(g);
+    put_int16(1,buf);
+    buf[2] = what;
+    write(fd,buf,3);
+    if (read(fd,(char *)&i,4) != 4) {
+	if (!g->silent)
+	    printf("epmd: no response from local epmd\n");
+	epmd_cleanup_exit(g,1);
+    }
+    j = ntohl(i);
+    if (!g->silent)
+	printf("epmd: up and running on port %d with data:\n", j);
+    while(1) {
+	if ((rval = read(fd,buf,1)) <= 0)  {
+	    close(fd);
+	    epmd_cleanup_exit(g,0);
+	}
+	buf[rval] = '\0';
+	if (!g->silent)
+	    printf("%s",buf);
+    }
+}
+
+
+
+static int conn_to_epmd(EpmdVars *g)
+{
+    struct EPMD_SOCKADDR_IN address;
+    int connect_sock;
+    
+    connect_sock = socket(FAMILY, SOCK_STREAM, 0);
+    if (connect_sock<0)
+	goto error;
+
+    { /* store port number in unsigned short */
+      unsigned short sport = g->port;
+      SET_ADDR_LOOPBACK(address, FAMILY, sport);
+    }
+
+    if (connect(connect_sock, (struct sockaddr*)&address, sizeof address) < 0) 
+	goto error;
+    return connect_sock;
+
+ error:
+    if (!g->silent) {
+	fprintf(stderr, "epmd: Cannot connect to local epmd\n");
+    }
+    epmd_cleanup_exit(g,1);
+    return -1;
+}
+
+/* Fill buffer, return buffer length, 0 for EOF, < 0 for error. */
+static int read_fill(int fd,char *buf,int len)
+{
+    int i;
+    int got = 0;
+    
+    do {
+	if ((i = read(fd, buf+got, len-got)) <= 0) 
+	    return (i);
+	got += i;
+    } while (got < len);
+    return (len);
+}