lib/util Move set_socket_options() into common code.

2 files changed, 163 insertions, 0 deletions

diff --git a/lib/util/util_net.c b/lib/util/util_net.c
index e80447128f..a8a05da138 100644
--- a/lib/util/util_net.c
+++ b/lib/util/util_net.c
@@ -695,3 +695,164 @@ const char *client_socket_addr(int fd, char *addr, size_t addr_len)
 {
 	return get_socket_addr(fd, addr, addr_len);
 }
+
+
+enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON};
+
+typedef struct smb_socket_option {
+	const char *name;
+	int level;
+	int option;
+	int value;
+	int opttype;
+} smb_socket_option;
+
+static const smb_socket_option socket_options[] = {
+  {"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL},
+  {"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL},
+  {"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL},
+#ifdef TCP_NODELAY
+  {"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},
+#endif
+#ifdef TCP_KEEPCNT
+  {"TCP_KEEPCNT", IPPROTO_TCP, TCP_KEEPCNT, 0, OPT_INT},
+#endif
+#ifdef TCP_KEEPIDLE
+  {"TCP_KEEPIDLE", IPPROTO_TCP, TCP_KEEPIDLE, 0, OPT_INT},
+#endif
+#ifdef TCP_KEEPINTVL
+  {"TCP_KEEPINTVL", IPPROTO_TCP, TCP_KEEPINTVL, 0, OPT_INT},
+#endif
+#ifdef IPTOS_LOWDELAY
+  {"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},
+#endif
+#ifdef IPTOS_THROUGHPUT
+  {"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},
+#endif
+#ifdef SO_REUSEPORT
+  {"SO_REUSEPORT", SOL_SOCKET, SO_REUSEPORT, 0, OPT_BOOL},
+#endif
+#ifdef SO_SNDBUF
+  {"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},
+#endif
+#ifdef SO_RCVBUF
+  {"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},
+#endif
+#ifdef SO_SNDLOWAT
+  {"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},
+#endif
+#ifdef SO_RCVLOWAT
+  {"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
+#endif
+#ifdef SO_SNDTIMEO
+  {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
+#endif
+#ifdef SO_RCVTIMEO
+  {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
+#endif
+#ifdef TCP_FASTACK
+  {"TCP_FASTACK", IPPROTO_TCP, TCP_FASTACK, 0, OPT_INT},
+#endif
+#ifdef TCP_QUICKACK
+  {"TCP_QUICKACK", IPPROTO_TCP, TCP_QUICKACK, 0, OPT_BOOL},
+#endif
+#ifdef TCP_KEEPALIVE_THRESHOLD
+  {"TCP_KEEPALIVE_THRESHOLD", IPPROTO_TCP, TCP_KEEPALIVE_THRESHOLD, 0, OPT_INT},
+#endif
+#ifdef TCP_KEEPALIVE_ABORT_THRESHOLD
+  {"TCP_KEEPALIVE_ABORT_THRESHOLD", IPPROTO_TCP, TCP_KEEPALIVE_ABORT_THRESHOLD, 0, OPT_INT},
+#endif
+  {NULL,0,0,0,0}};
+
+/****************************************************************************
+ Print socket options.
+****************************************************************************/
+
+static void print_socket_options(int s)
+{
+	int value;
+	socklen_t vlen = 4;
+	const smb_socket_option *p = &socket_options[0];
+
+	/* wrapped in if statement to prevent streams
+	 * leak in SCO Openserver 5.0 */
+	/* reported on samba-technical  --jerry */
+	if ( DEBUGLEVEL >= 5 ) {
+		DEBUG(5,("Socket options:\n"));
+		for (; p->name != NULL; p++) {
+			if (getsockopt(s, p->level, p->option,
+						(void *)&value, &vlen) == -1) {
+				DEBUGADD(5,("\tCould not test socket option %s.\n",
+							p->name));
+			} else {
+				DEBUGADD(5,("\t%s = %d\n",
+							p->name,value));
+			}
+		}
+	}
+ }
+
+/****************************************************************************
+ Set user socket options.
+****************************************************************************/
+
+void set_socket_options(int fd, const char *options)
+{
+	TALLOC_CTX *ctx = talloc_new(NULL);
+	char *tok;
+
+	while (next_token_talloc(ctx, &options, &tok," \t,")) {
+		int ret=0,i;
+		int value = 1;
+		char *p;
+		bool got_value = false;
+
+		if ((p = strchr_m(tok,'='))) {
+			*p = 0;
+			value = atoi(p+1);
+			got_value = true;
+		}
+
+		for (i=0;socket_options[i].name;i++)
+			if (strequal(socket_options[i].name,tok))
+				break;
+
+		if (!socket_options[i].name) {
+			DEBUG(0,("Unknown socket option %s\n",tok));
+			continue;
+		}
+
+		switch (socket_options[i].opttype) {
+		case OPT_BOOL:
+		case OPT_INT:
+			ret = setsockopt(fd,socket_options[i].level,
+					socket_options[i].option,
+					(char *)&value,sizeof(int));
+			break;
+
+		case OPT_ON:
+			if (got_value)
+				DEBUG(0,("syntax error - %s "
+					"does not take a value\n",tok));
+
+			{
+				int on = socket_options[i].value;
+				ret = setsockopt(fd,socket_options[i].level,
+					socket_options[i].option,
+					(char *)&on,sizeof(int));
+			}
+			break;
+		}
+
+		if (ret != 0) {
+			/* be aware that some systems like Solaris return
+			 * EINVAL to a setsockopt() call when the client
+			 * sent a RST previously - no need to worry */
+			DEBUG(2,("Failed to set socket option %s (Error %s)\n",
+				tok, strerror(errno) ));
+		}
+	}
+
+	TALLOC_FREE(ctx);
+	print_socket_options(fd);
+}
diff --git a/lib/util/util_net.h b/lib/util/util_net.h
index 71d1d1a6bd..38b6d5a959 100644
--- a/lib/util/util_net.h
+++ b/lib/util/util_net.h
@@ -108,4 +108,6 @@ const char *client_name(int fd);
 int get_socket_port(int fd);
 const char *client_socket_addr(int fd, char *addr, size_t addr_len);
 
+void set_socket_options(int fd, const char *options);
+
 #endif /* _SAMBA_UTIL_NET_H_ */