[examples] added helper external functions to make code more clean;

examples/Makefile.am

@@ -15,7 +15,7 @@ libsxmp = ../lib/.libs/libsxmp.la
 
 bin_PROGRAMS =  filelistd filelistc
 
-filelistd_SOURCES = filelistd.c
+filelistd_SOURCES = helpers.c filelistd.c
 filelistd_LDADD = $(LIBTDATA_LIBS) $(LIBSEXPR_LIBS) $(OPENSSL_LIBS) \
 	$(LIBUUID_LIBS) $(libsxmp) -lpthread
 

examples/filelistd.c

@@ -62,6 +62,7 @@
 #include <errno.h>
 
 #include "filelist.h"
+#include "helpers.h"
 
 /*
  * type used to stream a directory contents
@@ -106,31 +107,6 @@ static inline void dump_dirent(struct dirent *d, char *buf)
   }
 }
 
-/* just a stupid function to open listener on the specified port */
-static int __openlistener(int port)
-{
-  int sd;
-  struct sockaddr_in addr;
-
-  sd = socket(PF_INET, SOCK_STREAM, 0);
-  memset(&addr, 0, sizeof(addr));
-
-  addr.sin_family = AF_INET;
-  addr.sin_port = htons(port);
-  addr.sin_addr.s_addr = INADDR_ANY;
-
-  if(bind(sd, (struct sockaddr*)&addr, sizeof(addr)) != 0) {
-    perror("can't bind port");
-    abort();
-  }
-  if(listen(sd, 10) != 0) {
-    perror("Can't configure listening port");
-    abort();
-  }
-
-  return sd;
-}
-
 /* firstly we need to take an rpc calls data,
  * sxmp uses usrtc from libtdata to store it
  */
@@ -421,7 +397,7 @@ int main(int argc, char **argv)
   signal(SIGPIPE, SIG_IGN);
 
   /* now we're ready to run the listen process */
-  int srv = __openlistener(port);
+  int srv = openlistener_socket(port);
 
   while(1) {
     struct sockaddr_in addr;

examples/helpers.c

@@ -0,0 +1,64 @@
+/*
+ * Secure X Message Passing Library v2 examples.
+ *
+ * (c) Originally written by somebody else ...
+ * (c) Alexander Vdolainen 2013-2015 <avdolainen@gmail.com>
+ *
+ * libsxmp is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libsxmp is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ *
+ * This is a simple helpers to make code more clean;
+ *
+ */
+
+#include <stdio.h>
+#include <dirent.h>
+#define __USE_GNU
+#include <stdlib.h>
+#include <stdarg.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#include <sys/resource.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <stdint.h>
+#include <errno.h>
+#include <string.h>
+
+int openlistener_socket(int port)
+{
+  int sd;
+  struct sockaddr_in addr;
+
+  sd = socket(PF_INET, SOCK_STREAM, 0);
+  memset(&addr, 0, sizeof(addr));
+
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(port);
+  addr.sin_addr.s_addr = INADDR_ANY;
+
+  if(bind(sd, (struct sockaddr*)&addr, sizeof(addr)) != 0) {
+    perror("can't bind port");
+    abort();
+  }
+  if(listen(sd, 10) != 0) {
+    perror("Can't configure listening port");
+    abort();
+  }
+
+  return sd;
+}
+

examples/helpers.h

@@ -0,0 +1,27 @@
+/*
+ * Secure X Message Passing Library v2 examples.
+ *
+ * (c) Originally written by somebody else ...
+ * (c) Alexander Vdolainen 2013-2015 <avdolainen@gmail.com>
+ *
+ * libsxmp is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libsxmp is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ *
+ */
+
+#ifndef __SXMP_EXAMPLES_HELPERS_H__
+#define __SXMP_EXAMPLES_HELPERS_H__
+
+int openlistener_socket(int port);
+
+#endif /* __SXMP_EXAMPLES_HELPERS_H__ */