lib: Add before/after hooks to async_connect
[kai/samba-autobuild/.git] / source3 / lib / util_sock.c
index 3c9749509926b2336e7844676b77508559e414fe..eb38055d19a7b2eff085791950e29e74f9ad0c01 100644 (file)
 */
 
 #include "includes.h"
+#include "system/filesys.h"
 #include "memcache.h"
 #include "../lib/async_req/async_sock.h"
 #include "../lib/util/select.h"
-#include "interfaces.h"
-
-/****************************************************************************
- Get a port number in host byte order from a sockaddr_storage.
-****************************************************************************/
-
-uint16_t get_sockaddr_port(const struct sockaddr_storage *pss)
-{
-       uint16_t port = 0;
-
-       if (pss->ss_family != AF_INET) {
-#if defined(HAVE_IPV6)
-               /* IPv6 */
-               const struct sockaddr_in6 *sa6 =
-                       (const struct sockaddr_in6 *)pss;
-               port = ntohs(sa6->sin6_port);
-#endif
-       } else {
-               const struct sockaddr_in *sa =
-                       (const struct sockaddr_in *)pss;
-               port = ntohs(sa->sin_port);
-       }
-       return port;
-}
-
-/****************************************************************************
- Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
-****************************************************************************/
-
-static char *print_sockaddr_len(char *dest,
-                       size_t destlen,
-                       const struct sockaddr *psa,
-                       socklen_t psalen)
-{
-       if (destlen > 0) {
-               dest[0] = '\0';
-       }
-       (void)sys_getnameinfo(psa,
-                       psalen,
-                       dest, destlen,
-                       NULL, 0,
-                       NI_NUMERICHOST);
-       return dest;
-}
-
-/****************************************************************************
- Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
-****************************************************************************/
-
-char *print_sockaddr(char *dest,
-                       size_t destlen,
-                       const struct sockaddr_storage *psa)
-{
-       return print_sockaddr_len(dest, destlen, (struct sockaddr *)psa,
-                       sizeof(struct sockaddr_storage));
-}
-
-/****************************************************************************
- Print out a canonical IPv4 or IPv6 address from a struct sockaddr_storage.
-****************************************************************************/
-
-char *print_canonical_sockaddr(TALLOC_CTX *ctx,
-                       const struct sockaddr_storage *pss)
-{
-       char addr[INET6_ADDRSTRLEN];
-       char *dest = NULL;
-       int ret;
-
-       /* Linux getnameinfo() man pages says port is unitialized if
-          service name is NULL. */
-
-       ret = sys_getnameinfo((const struct sockaddr *)pss,
-                       sizeof(struct sockaddr_storage),
-                       addr, sizeof(addr),
-                       NULL, 0,
-                       NI_NUMERICHOST);
-       if (ret != 0) {
-               return NULL;
-       }
-
-       if (pss->ss_family != AF_INET) {
-#if defined(HAVE_IPV6)
-               dest = talloc_asprintf(ctx, "[%s]", addr);
-#else
-               return NULL;
-#endif
-       } else {
-               dest = talloc_asprintf(ctx, "%s", addr);
-       }
-
-       return dest;
-}
-
-/****************************************************************************
- Return the string of an IP address (IPv4 or IPv6).
-****************************************************************************/
-
-static const char *get_socket_addr(int fd, char *addr_buf, size_t addr_len)
-{
-       struct sockaddr_storage sa;
-       socklen_t length = sizeof(sa);
-
-       /* Ok, returning a hard coded IPv4 address
-        * is bogus, but it's just as bogus as a
-        * zero IPv6 address. No good choice here.
-        */
-
-       strlcpy(addr_buf, "0.0.0.0", addr_len);
-
-       if (fd == -1) {
-               return addr_buf;
-       }
-
-       if (getsockname(fd, (struct sockaddr *)&sa, &length) < 0) {
-               DEBUG(0,("getsockname failed. Error was %s\n",
-                       strerror(errno) ));
-               return addr_buf;
-       }
-
-       return print_sockaddr_len(addr_buf, addr_len, (struct sockaddr *)&sa, length);
-}
-
-/****************************************************************************
- Return the port number we've bound to on a socket.
-****************************************************************************/
-
-int get_socket_port(int fd)
-{
-       struct sockaddr_storage sa;
-       socklen_t length = sizeof(sa);
-
-       if (fd == -1) {
-               return -1;
-       }
-
-       if (getsockname(fd, (struct sockaddr *)&sa, &length) < 0) {
-               int level = (errno == ENOTCONN) ? 2 : 0;
-               DEBUG(level, ("getsockname failed. Error was %s\n",
-                              strerror(errno)));
-               return -1;
-       }
-
-#if defined(HAVE_IPV6)
-       if (sa.ss_family == AF_INET6) {
-               return ntohs(((struct sockaddr_in6 *)&sa)->sin6_port);
-       }
-#endif
-       if (sa.ss_family == AF_INET) {
-               return ntohs(((struct sockaddr_in *)&sa)->sin_port);
-       }
-       return -1;
-}
+#include "lib/socket/interfaces.h"
+#include "../lib/util/tevent_unix.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "../lib/tsocket/tsocket.h"
 
 const char *client_name(int fd)
 {
@@ -186,11 +39,6 @@ const char *client_addr(int fd, char *addr, size_t addrlen)
        return get_peer_addr(fd,addr,addrlen);
 }
 
-const char *client_socket_addr(int fd, char *addr, size_t addr_len)
-{
-       return get_socket_addr(fd, addr, addr_len);
-}
-
 #if 0
 /* Not currently used. JRA. */
 int client_socket_port(int fd)
@@ -199,26 +47,6 @@ int client_socket_port(int fd)
 }
 #endif
 
-/****************************************************************************
- Accessor functions to make thread-safe code easier later...
-****************************************************************************/
-
-void set_smb_read_error(enum smb_read_errors *pre,
-                       enum smb_read_errors newerr)
-{
-       if (pre) {
-               *pre = newerr;
-       }
-}
-
-void cond_set_smb_read_error(enum smb_read_errors *pre,
-                       enum smb_read_errors newerr)
-{
-       if (pre && *pre == SMB_READ_OK) {
-               *pre = newerr;
-       }
-}
-
 /****************************************************************************
  Determine if a file descriptor is in fact a socket.
 ****************************************************************************/
@@ -231,166 +59,6 @@ bool is_a_socket(int fd)
        return(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&v, &l) == 0);
 }
 
-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_stackframe();
-       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);
-}
-
 /****************************************************************************
  Read from a socket.
 ****************************************************************************/
@@ -570,7 +238,7 @@ ssize_t write_data_iov(int fd, const struct iovec *orig_iov, int iovcnt)
         * discarding elements.
         */
 
-       iov_copy = (struct iovec *)TALLOC_MEMDUP(
+       iov_copy = (struct iovec *)talloc_memdup(
                talloc_tos(), orig_iov, sizeof(struct iovec) * iovcnt);
 
        if (iov_copy == NULL) {
@@ -619,7 +287,7 @@ ssize_t write_data(int fd, const char *buffer, size_t N)
 {
        struct iovec iov;
 
-       iov.iov_base = CONST_DISCARD(void *, buffer);
+       iov.iov_base = discard_const_p(void, buffer);
        iov.iov_len = N;
        return write_data_iov(fd, &iov, 1);
 }
@@ -632,7 +300,7 @@ bool send_keepalive(int client)
 {
        unsigned char buf[4];
 
-       buf[0] = SMBkeepalive;
+       buf[0] = NBSSkeepalive;
        buf[1] = buf[2] = buf[3] = 0;
 
        return(write_data(client,(char *)buf,4) == 4);
@@ -662,7 +330,7 @@ NTSTATUS read_smb_length_return_keepalive(int fd, char *inbuf,
        *len = smb_len(inbuf);
        msg_type = CVAL(inbuf,0);
 
-       if (msg_type == SMBkeepalive) {
+       if (msg_type == NBSSkeepalive) {
                DEBUG(5,("Got keepalive packet\n"));
        }
 
@@ -786,10 +454,37 @@ int open_socket_in(int type,
 #endif /* SO_REUSEPORT */
        }
 
+#ifdef HAVE_IPV6
+       /*
+        * As IPV6_V6ONLY is the default on some systems,
+        * we better try to be consistent and always use it.
+        *
+        * This also avoids using IPv4 via AF_INET6 sockets
+        * and makes sure %I never resolves to a '::ffff:192.168.0.1'
+        * string.
+        */
+       if (sock.ss_family == AF_INET6) {
+               int val = 1;
+               int ret;
+
+               ret = setsockopt(res, IPPROTO_IPV6, IPV6_V6ONLY,
+                                (const void *)&val, sizeof(val));
+               if (ret == -1) {
+                       if(DEBUGLVL(0)) {
+                               dbgtext("open_socket_in(): IPV6_ONLY failed: ");
+                               dbgtext("%s\n", strerror(errno));
+                       }
+                       close(res);
+                       return -1;
+               }
+       }
+#endif
+
        /* now we've got a socket - we need to bind it */
        if (bind(res, (struct sockaddr *)&sock, slen) == -1 ) {
-               if( DEBUGLVL(dlevel) && (port == SMB_PORT1 ||
-                               port == SMB_PORT2 || port == NMB_PORT) ) {
+               if( DEBUGLVL(dlevel) && (port == NMB_PORT ||
+                                        port == NBT_SMB_PORT ||
+                                        port == TCP_SMB_PORT) ) {
                        char addr[INET6_ADDRSTRLEN];
                        print_sockaddr(addr, sizeof(addr),
                                        &sock);
@@ -807,11 +502,11 @@ int open_socket_in(int type,
 
 struct open_socket_out_state {
        int fd;
-       struct event_context *ev;
+       struct tevent_context *ev;
        struct sockaddr_storage ss;
        socklen_t salen;
        uint16_t port;
-       int wait_nsec;
+       int wait_usec;
 };
 
 static void open_socket_out_connected(struct tevent_req *subreq);
@@ -829,7 +524,7 @@ static int open_socket_out_state_destructor(struct open_socket_out_state *s)
 **************************************************************************/
 
 struct tevent_req *open_socket_out_send(TALLOC_CTX *mem_ctx,
-                                       struct event_context *ev,
+                                       struct tevent_context *ev,
                                        const struct sockaddr_storage *pss,
                                        uint16_t port,
                                        int timeout)
@@ -847,7 +542,7 @@ struct tevent_req *open_socket_out_send(TALLOC_CTX *mem_ctx,
        state->ev = ev;
        state->ss = *pss;
        state->port = port;
-       state->wait_nsec = 10000;
+       state->wait_usec = 10000;
        state->salen = -1;
 
        state->fd = socket(state->ss.ss_family, SOCK_STREAM, 0);
@@ -858,7 +553,7 @@ struct tevent_req *open_socket_out_send(TALLOC_CTX *mem_ctx,
        talloc_set_destructor(state, open_socket_out_state_destructor);
 
        if (!tevent_req_set_endtime(
-                   result, ev, timeval_current_ofs(0, timeout*1000))) {
+                   result, ev, timeval_current_ofs_msec(timeout))) {
                goto fail;
        }
 
@@ -891,11 +586,11 @@ struct tevent_req *open_socket_out_send(TALLOC_CTX *mem_ctx,
 
        subreq = async_connect_send(state, state->ev, state->fd,
                                    (struct sockaddr *)&state->ss,
-                                   state->salen);
+                                   state->salen, NULL, NULL, NULL);
        if ((subreq == NULL)
            || !tevent_req_set_endtime(
                    subreq, state->ev,
-                   timeval_current_ofs(0, state->wait_nsec))) {
+                   timeval_current_ofs(0, state->wait_usec))) {
                goto fail;
        }
        tevent_req_set_callback(subreq, open_socket_out_connected, result);
@@ -937,19 +632,19 @@ static void open_socket_out_connected(struct tevent_req *subreq)
                 * retry
                 */
 
-               if (state->wait_nsec < 250000) {
-                       state->wait_nsec *= 1.5;
+               if (state->wait_usec < 250000) {
+                       state->wait_usec *= 1.5;
                }
 
                subreq = async_connect_send(state, state->ev, state->fd,
                                            (struct sockaddr *)&state->ss,
-                                           state->salen);
+                                           state->salen, NULL, NULL, NULL);
                if (tevent_req_nomem(subreq, req)) {
                        return;
                }
                if (!tevent_req_set_endtime(
                            subreq, state->ev,
-                           timeval_current_ofs(0, state->wait_nsec))) {
+                           timeval_current_ofs_usec(state->wait_usec))) {
                        tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
                        return;
                }
@@ -982,15 +677,25 @@ NTSTATUS open_socket_out_recv(struct tevent_req *req, int *pfd)
        return NT_STATUS_OK;
 }
 
+/**
+* @brief open a socket
+*
+* @param pss a struct sockaddr_storage defining the address to connect to
+* @param port to connect to
+* @param timeout in MILLISECONDS
+* @param pfd file descriptor returned
+*
+* @return NTSTATUS code
+*/
 NTSTATUS open_socket_out(const struct sockaddr_storage *pss, uint16_t port,
                         int timeout, int *pfd)
 {
        TALLOC_CTX *frame = talloc_stackframe();
-       struct event_context *ev;
+       struct tevent_context *ev;
        struct tevent_req *req;
        NTSTATUS status = NT_STATUS_NO_MEMORY;
 
-       ev = event_context_init(frame);
+       ev = samba_tevent_context_init(frame);
        if (ev == NULL) {
                goto fail;
        }
@@ -1010,7 +715,7 @@ NTSTATUS open_socket_out(const struct sockaddr_storage *pss, uint16_t port,
 }
 
 struct open_socket_out_defer_state {
-       struct event_context *ev;
+       struct tevent_context *ev;
        struct sockaddr_storage ss;
        uint16_t port;
        int timeout;
@@ -1021,7 +726,7 @@ static void open_socket_out_defer_waited(struct tevent_req *subreq);
 static void open_socket_out_defer_connected(struct tevent_req *subreq);
 
 struct tevent_req *open_socket_out_defer_send(TALLOC_CTX *mem_ctx,
-                                             struct event_context *ev,
+                                             struct tevent_context *ev,
                                              struct timeval wait_time,
                                              const struct sockaddr_storage *pss,
                                              uint16_t port,
@@ -1115,6 +820,7 @@ int open_udp_socket(const char *host, int port)
 {
        struct sockaddr_storage ss;
        int res;
+       socklen_t salen;
 
        if (!interpret_string_addr(&ss, host, 0)) {
                DEBUG(10,("open_udp_socket: can't resolve name %s\n",
@@ -1137,15 +843,21 @@ int open_udp_socket(const char *host, int port)
                        setup_linklocal_scope_id(
                                (struct sockaddr *)&ss);
                }
-       }
+               salen = sizeof(struct sockaddr_in6);
+       } else 
 #endif
-        if (ss.ss_family == AF_INET) {
-                struct sockaddr_in *psa;
-                psa = (struct sockaddr_in *)&ss;
-                psa->sin_port = htons(port);
-        }
+       if (ss.ss_family == AF_INET) {
+               struct sockaddr_in *psa;
+               psa = (struct sockaddr_in *)&ss;
+               psa->sin_port = htons(port);
+           salen = sizeof(struct sockaddr_in);
+       } else {
+               DEBUG(1, ("unknown socket family %d", ss.ss_family));
+               close(res);
+               return -1;
+       }
 
-       if (sys_connect(res,(struct sockaddr *)&ss)) {
+       if (connect(res, (struct sockaddr *)&ss, salen)) {
                close(res);
                return -1;
        }
@@ -1237,7 +949,7 @@ static bool matchname(const char *remotehost,
                        continue;
                }
                if (sockaddr_equal((const struct sockaddr *)res->ai_addr,
-                                       (struct sockaddr *)pss)) {
+                                       (const struct sockaddr *)pss)) {
                        freeaddrinfo(ailist);
                        return true;
                }
@@ -1380,10 +1092,6 @@ const char *get_peer_name(int fd, bool force_lookup)
                }
        }
 
-       /* can't pass the same source and dest strings in when you
-          use --enable-developer or the clobber_region() call will
-          get you */
-
        strlcpy(tmp_name, name_buf, sizeof(tmp_name));
        alpha_strcpy(name_buf, tmp_name, "_-.", sizeof(name_buf));
        if (strstr(name_buf,"..")) {
@@ -1407,6 +1115,113 @@ const char *get_peer_addr(int fd, char *addr, size_t addr_len)
        return get_peer_addr_internal(fd, addr, addr_len, NULL, NULL);
 }
 
+int get_remote_hostname(const struct tsocket_address *remote_address,
+                       char **name,
+                       TALLOC_CTX *mem_ctx)
+{
+       char name_buf[MAX_DNS_NAME_LENGTH];
+       char tmp_name[MAX_DNS_NAME_LENGTH];
+       struct name_addr_pair nc;
+       struct sockaddr_storage ss;
+       ssize_t len;
+       int rc;
+
+       if (!lp_hostname_lookups()) {
+               nc.name = tsocket_address_inet_addr_string(remote_address,
+                                                          mem_ctx);
+               if (nc.name == NULL) {
+                       return -1;
+               }
+
+               len = tsocket_address_bsd_sockaddr(remote_address,
+                                                  (struct sockaddr *) &nc.ss,
+                                                  sizeof(struct sockaddr_storage));
+               if (len < 0) {
+                       return -1;
+               }
+
+               store_nc(&nc);
+               lookup_nc(&nc);
+
+               if (nc.name == NULL) {
+                       *name = talloc_strdup(mem_ctx, "UNKNOWN");
+               } else {
+                       *name = talloc_strdup(mem_ctx, nc.name);
+               }
+               return 0;
+       }
+
+       lookup_nc(&nc);
+
+       ZERO_STRUCT(ss);
+
+       len = tsocket_address_bsd_sockaddr(remote_address,
+                                          (struct sockaddr *) &ss,
+                                          sizeof(struct sockaddr_storage));
+       if (len < 0) {
+               return -1;
+       }
+
+       /* it might be the same as the last one - save some DNS work */
+       if (sockaddr_equal((struct sockaddr *)&ss, (struct sockaddr *)&nc.ss)) {
+               if (nc.name == NULL) {
+                       *name = talloc_strdup(mem_ctx, "UNKNOWN");
+               } else {
+                       *name = talloc_strdup(mem_ctx, nc.name);
+               }
+               return 0;
+       }
+
+       /* Look up the remote host name. */
+       rc = sys_getnameinfo((struct sockaddr *) &ss,
+                            len,
+                            name_buf,
+                            sizeof(name_buf),
+                            NULL,
+                            0,
+                            0);
+       if (rc < 0) {
+               char *p;
+
+               p = tsocket_address_inet_addr_string(remote_address, mem_ctx);
+               if (p == NULL) {
+                       return -1;
+               }
+
+               DEBUG(1,("getnameinfo failed for %s with error %s\n",
+                        p,
+                        gai_strerror(rc)));
+               strlcpy(name_buf, p, sizeof(name_buf));
+
+               TALLOC_FREE(p);
+       } else {
+               if (!matchname(name_buf, (struct sockaddr *)&ss, len)) {
+                       DEBUG(0,("matchname failed on %s\n", name_buf));
+                       strlcpy(name_buf, "UNKNOWN", sizeof(name_buf));
+               }
+       }
+
+       strlcpy(tmp_name, name_buf, sizeof(tmp_name));
+       alpha_strcpy(name_buf, tmp_name, "_-.", sizeof(name_buf));
+       if (strstr(name_buf,"..")) {
+               strlcpy(name_buf, "UNKNOWN", sizeof(name_buf));
+       }
+
+       nc.name = name_buf;
+       nc.ss = ss;
+
+       store_nc(&nc);
+       lookup_nc(&nc);
+
+       if (nc.name == NULL) {
+               *name = talloc_strdup(mem_ctx, "UNKOWN");
+       } else {
+               *name = talloc_strdup(mem_ctx, nc.name);
+       }
+
+       return 0;
+}
+
 /*******************************************************************
  Create protected unix domain socket.
 
@@ -1421,46 +1236,18 @@ int create_pipe_sock(const char *socket_dir,
 {
 #ifdef HAVE_UNIXSOCKET
        struct sockaddr_un sunaddr;
-       struct stat st;
+       bool ok;
        int sock;
-       mode_t old_umask;
        char *path = NULL;
 
-       old_umask = umask(0);
-
-       /* Create the socket directory or reuse the existing one */
-
-       if (lstat(socket_dir, &st) == -1) {
-               if (errno == ENOENT) {
-                       /* Create directory */
-                       if (mkdir(socket_dir, dir_perms) == -1) {
-                               DEBUG(0, ("error creating socket directory "
-                                       "%s: %s\n", socket_dir,
-                                       strerror(errno)));
-                               goto out_umask;
-                       }
-               } else {
-                       DEBUG(0, ("lstat failed on socket directory %s: %s\n",
-                               socket_dir, strerror(errno)));
-                       goto out_umask;
-               }
-       } else {
-               /* Check ownership and permission on existing directory */
-               if (!S_ISDIR(st.st_mode)) {
-                       DEBUG(0, ("socket directory %s isn't a directory\n",
-                               socket_dir));
-                       goto out_umask;
-               }
-               if ((st.st_uid != sec_initial_uid()) ||
-                               ((st.st_mode & 0777) != dir_perms)) {
-                       DEBUG(0, ("invalid permissions on socket directory "
-                               "%s\n", socket_dir));
-                       goto out_umask;
-               }
+       ok = directory_create_or_exist_strict(socket_dir,
+                                             sec_initial_uid(),
+                                             dir_perms);
+       if (!ok) {
+               return -1;
        }
 
        /* Create the socket file */
-
        sock = socket(AF_UNIX, SOCK_STREAM, 0);
 
        if (sock == -1) {
@@ -1484,15 +1271,8 @@ int create_pipe_sock(const char *socket_dir,
                goto out_close;
        }
 
-       if (listen(sock, 5) == -1) {
-               DEBUG(0, ("listen failed on pipe socket %s: %s\n", path,
-                       strerror(errno)));
-               goto out_close;
-       }
-
        SAFE_FREE(path);
 
-       umask(old_umask);
        return sock;
 
 out_close:
@@ -1500,8 +1280,6 @@ out_close:
        if (sock != -1)
                close(sock);
 
-out_umask:
-       umask(old_umask);
        return -1;
 
 #else
@@ -1581,6 +1359,40 @@ const char *get_mydnsfullname(void)
        return (const char *)tmp.data;
 }
 
+/************************************************************
+ Is this my ip address ?
+************************************************************/
+
+static bool is_my_ipaddr(const char *ipaddr_str)
+{
+       struct sockaddr_storage ss;
+       struct iface_struct *nics;
+       int i, n;
+
+       if (!interpret_string_addr(&ss, ipaddr_str, AI_NUMERICHOST)) {
+               return false;
+       }
+
+       if (is_zero_addr(&ss)) {
+               return false;
+       }
+
+       if (ismyaddr((struct sockaddr *)&ss) ||
+                       is_loopback_addr((struct sockaddr *)&ss)) {
+               return true;
+       }
+
+       n = get_interfaces(talloc_tos(), &nics);
+       for (i=0; i<n; i++) {
+               if (sockaddr_equal((struct sockaddr *)&nics[i].ip, (struct sockaddr *)&ss)) {
+                       TALLOC_FREE(nics);
+                       return true;
+               }
+       }
+       TALLOC_FREE(nics);
+       return false;
+}
+
 /************************************************************
  Is this my name ?
 ************************************************************/
@@ -1588,7 +1400,6 @@ const char *get_mydnsfullname(void)
 bool is_myname_or_ipaddr(const char *s)
 {
        TALLOC_CTX *ctx = talloc_tos();
-       char addr[INET6_ADDRSTRLEN];
        char *name = NULL;
        const char *dnsname;
        char *servername = NULL;
@@ -1611,7 +1422,7 @@ bool is_myname_or_ipaddr(const char *s)
        }
 
        /* Optimize for the common case */
-       if (strequal(servername, global_myname())) {
+       if (strequal(servername, lp_netbios_name())) {
                return true;
        }
 
@@ -1636,45 +1447,38 @@ bool is_myname_or_ipaddr(const char *s)
                return true;
        }
 
-       /* Handle possible CNAME records - convert to an IP addr. */
-       if (!is_ipaddress(servername)) {
-               /* Use DNS to resolve the name, but only the first address */
-               struct sockaddr_storage ss;
-               if (interpret_string_addr(&ss, servername, 0)) {
-                       print_sockaddr(addr,
-                                       sizeof(addr),
-                                       &ss);
-                       servername = addr;
-               }
-       }
-
        /* Maybe its an IP address? */
        if (is_ipaddress(servername)) {
-               struct sockaddr_storage ss;
-               struct iface_struct *nics;
-               int i, n;
-
-               if (!interpret_string_addr(&ss, servername, AI_NUMERICHOST)) {
-                       return false;
-               }
+               return is_my_ipaddr(servername);
+       }
 
-               if (ismyaddr((struct sockaddr *)&ss)) {
-                       return true;
-               }
+       /* Handle possible CNAME records - convert to an IP addr. list. */
+       {
+               /* Use DNS to resolve the name, check all addresses. */
+               struct addrinfo *p = NULL;
+               struct addrinfo *res = NULL;
 
-               if (is_zero_addr(&ss) ||
-                       is_loopback_addr((struct sockaddr *)&ss)) {
+               if (!interpret_string_addr_internal(&res,
+                               servername,
+                               AI_ADDRCONFIG)) {
                        return false;
                }
 
-               n = get_interfaces(talloc_tos(), &nics);
-               for (i=0; i<n; i++) {
-                       if (sockaddr_equal((struct sockaddr *)&nics[i].ip, (struct sockaddr *)&ss)) {
-                               TALLOC_FREE(nics);
+               for (p = res; p; p = p->ai_next) {
+                       char addr[INET6_ADDRSTRLEN];
+                       struct sockaddr_storage ss;
+
+                       ZERO_STRUCT(ss);
+                       memcpy(&ss, p->ai_addr, p->ai_addrlen);
+                       print_sockaddr(addr,
+                                       sizeof(addr),
+                                       &ss);
+                       if (is_my_ipaddr(addr)) {
+                               freeaddrinfo(res);
                                return true;
                        }
                }
-               TALLOC_FREE(nics);
+               freeaddrinfo(res);
        }
 
        /* No match */
@@ -1769,7 +1573,7 @@ int poll_one_fd(int fd, int events, int timeout, int *revents)
        int ret;
        int saved_errno;
 
-       fds = TALLOC_ZERO_ARRAY(talloc_tos(), struct pollfd, 2);
+       fds = talloc_zero_array(talloc_tos(), struct pollfd, 1);
        if (fds == NULL) {
                errno = ENOMEM;
                return -1;
@@ -1777,7 +1581,7 @@ int poll_one_fd(int fd, int events, int timeout, int *revents)
        fds[0].fd = fd;
        fds[0].events = events;
 
-       ret = sys_poll(fds, 1, timeout);
+       ret = poll(fds, 1, timeout);
 
        /*
         * Assign whatever poll did, even in the ret<=0 case.