Only use unsetenv() when it is available

[ngircd-alex.git] / src / ngircd / conn.c

diff --git a/src/ngircd/conn.c b/src/ngircd/conn.c
index 30dfd094467397ac958052fd41bfd5f33960ff14..e8bfcf1c70cbbb9e848061eff7b151a2a7c8f854 100644 (file)
--- a/src/ngircd/conn.c
+++ b/src/ngircd/conn.c
@@ -152,7 +152,9 @@ my_sd_listen_fds(void)
        if (!e || !*e)
                return -1;
        count = atoi(e);
+#ifdef HAVE_UNSETENV
        unsetenv("LISTEN_FDS");
+#endif
 
        return count;
 }
@@ -1668,7 +1670,11 @@ Conn_StartLogin(CONN_ID Idx)
 #endif
                        (void)Conn_WriteStr(Idx,
                                "NOTICE AUTH :*** Looking up your hostname");
-               (void)Handle_Write(Idx);
+               /* Send buffered data to the client, but break on errors
+                * because Handle_Write() would have closed the connection
+                * again in this case! */
+               if (!Handle_Write(Idx))
+                       return;
        }
 
        Resolve_Addr(&My_Connections[Idx].proc_stat, &My_Connections[Idx].addr,
@@ -2127,6 +2133,7 @@ New_Server( int Server , ng_ipaddr_t *dest)
 
        if (!ng_ipaddr_tostr_r(dest, ip_str)) {
                Log(LOG_WARNING, "New_Server: Could not convert IP to string");
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
@@ -2141,11 +2148,14 @@ New_Server( int Server , ng_ipaddr_t *dest)
        if (new_sock < 0) {
                Log(LOG_CRIT, "Can't create socket (af %d): %s!",
                    af_dest, strerror(errno));
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
-       if (!Init_Socket(new_sock))
+       if (!Init_Socket(new_sock)) {
+               Conf_Server[Server].conn_id = NONE;
                return;
+       }
 
        /* is a bind address configured? */
        res = ng_ipaddr_af(&Conf_Server[Server].bind_addr);
@@ -2161,6 +2171,7 @@ New_Server( int Server , ng_ipaddr_t *dest)
        if(( res != 0 ) && ( errno != EINPROGRESS )) {
                Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
                close( new_sock );
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
@@ -2169,12 +2180,14 @@ New_Server( int Server , ng_ipaddr_t *dest)
                    "Cannot allocate memory for server connection (socket %d)",
                    new_sock);
                close( new_sock );
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
        if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
                Log(LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
                close(new_sock);
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
@@ -2189,6 +2202,7 @@ New_Server( int Server , ng_ipaddr_t *dest)
        if (!c) {
                Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
                io_close(new_sock);
+               Conf_Server[Server].conn_id = NONE;
                return;
        }
 
@@ -2450,16 +2464,21 @@ cb_Read_Resolver_Result( int r_fd, UNUSED short events )
                                        *ptr ? "" : ": ",
                                        *ptr ? "" : identptr);
                        }
-               } else {
+               } else if(Conf_Ident) {
                        Log(LOG_INFO, "IDENT lookup for connection %d: no result.", i);
-                       if (Conf_NoticeAuth && Conf_Ident)
+                       if (Conf_NoticeAuth)
                                (void)Conn_WriteStr(i,
                                        "NOTICE AUTH :*** No ident response");
                }
 #endif
 
-               if (Conf_NoticeAuth)
-                       (void)Handle_Write(i);
+               if (Conf_NoticeAuth) {
+                       /* Send buffered data to the client, but break on
+                        * errors because Handle_Write() would have closed
+                        * the connection again in this case! */
+                       if (!Handle_Write(i))
+                               return;
+               }
 
                Class_HandleServerBans(c);
        }