bind/connect cleanup.

Rename the existing xbind/xconnect to xbindany/xconnectany, to make room
for new xbind/xconnect that are more like 'x' versions of the regular
bind and connect. Move explicit bind/connect callers over to
xbind/xconnect.

Of the affected commands, only netcat is actually used by Android. It
was the most recent patch to netcat that made the lack of a more
traditional xbind/xconnect apparent.

4 files changed, 9 insertions, 18 deletions

diff --git a/toys/net/ftpget.c b/toys/net/ftpget.c
index ad3c3030..05c53509 100644
--- a/toys/net/ftpget.c
+++ b/toys/net/ftpget.c
@@ -105,7 +105,7 @@ void ftpget_main(void)
   if (!remote) remote = toys.optargs[1];
 
   // connect
-  TT.fd = xconnect(xgetaddrinfo(*toys.optargs, TT.p, 0, SOCK_STREAM, 0,
+  TT.fd = xconnectany(xgetaddrinfo(*toys.optargs, TT.p, 0, SOCK_STREAM, 0,
     AI_ADDRCONFIG));
   if (getpeername(TT.fd, (void *)&si6, &sl)) perror_exit("getpeername");
 
@@ -147,7 +147,7 @@ void ftpget_main(void)
     if (!s || port<1 || port>65535) error_exit_raw(toybuf);
     si6.sin6_port = SWAP_BE16(port); // same field size/offset for v4 and v6
     port = xsocket(si6.sin6_family, SOCK_STREAM, 0);
-    if (connect(port, (void *)&si6, sizeof(si6))) perror_exit("connect");
+    xconnect(port, (void *)&si6, sizeof(si6));
 
     // RETR blocks until file data read from data port, so use SIZE to check
     // if file exists before creating local copy
diff --git a/toys/net/netcat.c b/toys/net/netcat.c
index 65c41ace..0a235d1e 100644
--- a/toys/net/netcat.c
+++ b/toys/net/netcat.c
@@ -111,16 +111,10 @@ void netcat_main(void)
         sockaddr.sun_family = AF_UNIX;
 
         sockfd = xsocket(AF_UNIX, type | SOCK_CLOEXEC, 0);
-        if (connect(sockfd, (struct sockaddr*)&sockaddr,
-                    sizeof(sockaddr)) != 0) {
-          perror_exit("could not bind to unix domain socket");
-        }
-
+        xconnect(sockfd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
       } else {
-        struct addrinfo *addr = xgetaddrinfo(toys.optargs[0], toys.optargs[1],
-                                             family, type, 0, 0);
-
-        sockfd = xconnect(addr);
+        sockfd = xconnectany(xgetaddrinfo(toys.optargs[0], toys.optargs[1],
+                                          family, type, 0, 0));
       }
 
       // We have a connection. Disarm timeout.
@@ -145,13 +139,10 @@ void netcat_main(void)
         sockaddr.sun_family = AF_UNIX;
 
         sockfd = xsocket(AF_UNIX, type | SOCK_CLOEXEC, 0);
-        if (bind(sockfd, (struct sockaddr*)&sockaddr,
-                 sizeof(struct sockaddr_un)) != 0) {
-          perror_exit("unable to bind to UNIX domain socket");
-        }
+        xbind(sockfd, (struct sockaddr*)&sockaddr, sizeof(sockaddr));
       } else {
         sprintf(toybuf, "%ld", TT.p);
-        sockfd = xbind(xgetaddrinfo(TT.s, toybuf, family, type, 0, 0));
+        sockfd = xbindany(xgetaddrinfo(TT.s, toybuf, family, type, 0, 0));
       }
 
       if (listen(sockfd, 5)) error_exit("listen");
diff --git a/toys/net/ping.c b/toys/net/ping.c
index 81dca99f..9ae7c856 100644
--- a/toys/net/ping.c
+++ b/toys/net/ping.c
@@ -155,7 +155,7 @@ void ping_main(void)
     }
     xexit();
   }
-  if (TT.I && bind(TT.sock, sa, sizeof(srcaddr))) perror_exit("bind");
+  if (TT.I) xbind(TT.sock, sa, sizeof(srcaddr));
 
   if (toys.optflags&FLAG_m) {
       int mark = TT.m;
diff --git a/toys/net/sntp.c b/toys/net/sntp.c
index b1ecb1be..b1f3685f 100644
--- a/toys/net/sntp.c
+++ b/toys/net/sntp.c
@@ -88,7 +88,7 @@ void sntp_main(void)
 
   // Act as server if necessary
   if (FLAG(S)|FLAG(m)) {
-    fd = xbind(ai);
+    fd = xbindany(ai);
     if (TT.m) {
       struct ip_mreq group;