From: Theodore Tso <tytso@mit.edu>
Date: Sat, 16 Sep 1995 07:56:46 +0000 (+0000)
Subject: Program for testing if getsockname() works like the BSD networking code
X-Git-Tag: krb5-1.0-beta6~1059
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=1d87ef70ab1a603a6d45627f2df9b84af9387900;p=krb5.git

Program for testing if getsockname() works like the BSD networking code
or not.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6804 dc483132-0cff-0310-8789-dd5450dbe970
---

diff --git a/src/tests/misc/test_getsockname.c b/src/tests/misc/test_getsockname.c
new file mode 100644
index 000000000..12efa0641
--- /dev/null
+++ b/src/tests/misc/test_getsockname.c
@@ -0,0 +1,89 @@
+/*
+ * test_getsockname.c
+ * 
+ * This routine demonstrates a bug in the socket emulation library of
+ * Solaris and other monstrosities that uses STREAMS.  On other
+ * machines with a real networking layer, it prints the local
+ * interface address that is used to send a message to a specific
+ * host.  On Solaris, it prints out 0.0.0.0.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <string.h>
+
+int
+main(argc, argv)
+    int argc;
+    char *argv[];
+{
+    int sock, i;
+    struct hostent *host;
+    struct sockaddr_in s_sock;		/* server address */
+    struct sockaddr_in c_sock;		/* client address */
+    
+    char *hostname;
+
+    if (argc == 2) {
+	hostname = argv[1];
+    } else {
+	fprintf(stderr, "Usage: %s hostname\n", argv[0]);
+	exit(1);
+    }
+
+    /* Look up server host */
+    if ((host = gethostbyname(hostname)) == (struct hostent *) 0) {
+	fprintf(stderr, "%s: unknown host\n", hostname);
+	exit(1);
+    }
+
+    /* Set server's address */
+    (void) memset((char *)&s_sock, 0, sizeof(s_sock));
+
+    memcpy((char *)&s_sock.sin_addr, host->h_addr, host->h_length);
+#ifdef DEBUG
+    printf("s_sock.sin_addr is %s\n", inet_ntoa(s_sock.sin_addr));
+#endif
+    s_sock.sin_family = AF_INET;
+    s_sock.sin_port = htons(5555);
+    
+    /* Open a socket */
+    if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+	perror("socket");
+	exit(1);
+    }
+
+    memset((char *)&c_sock, 0, sizeof(c_sock));
+    c_sock.sin_family = AF_INET;
+
+    /* Bind it to set the address; kernel will fill in port # */
+    if (bind(sock, (struct sockaddr *)&c_sock, sizeof(c_sock)) < 0) {
+	perror("bind");
+	exit(1);
+    }
+	
+    /* "connect" the datagram socket; this is necessary to get a local address
+       properly bound for getsockname() below. */
+    if (connect(sock, (struct sockaddr *)&s_sock, sizeof(s_sock)) == -1) {
+	perror("connect");
+	exit(1);
+    }
+    
+    /* Get my address */
+    memset((char *) &c_sock, 0, sizeof(c_sock));
+    i = sizeof(c_sock);
+    if (getsockname(sock, (struct sockaddr *)&c_sock, &i) < 0) {
+	perror("getsockname");
+	exit(1);
+    }
+
+    printf("My interface address is: %s\n", inet_ntoa(c_sock.sin_addr));
+    
+    exit(0);
+}