simple and portable block notifycation added. sysman@sysman.net

same usage as node notify, but now simple
         blocknotify="/bin/blocknotify localhost:8117 mySuperSecurePassword dogecoin %s"

scripts/blocknotify.c

@@ -0,0 +1,78 @@
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+/*
+ part of NOMP project
+  optimal block change pool notify in pure c. 
+ (may also work as coin switch)
+
+ Simple lightweight & fast.
+
+# gcc blocknotify.c -o blocknotify
+#
+#  Platforms : Linux,BSD,Solaris (mostly OS independent)
+
+  Alex Petrov aka SysMan at sysman.net
+
+
+// {"password":"notepas","coin":"Xcoin","hash":"d2191a8b644c9cd903439edf1d89ee060e196b3e116e0d48a3f11e5e3987a03b"}
+// simplest connect + send json string to server
+
+# $Id: blocknotify.c,v 0.1 2014/04/07 22:38:09 sysman Exp $
+*/
+int main(int argc, char **argv)
+{
+   int sockfd,n;
+   struct sockaddr_in servaddr,cliaddr;
+   char sendline[1000];
+   char recvline[1000];
+   char host[200];
+   char *p,*arg,*errptr;
+   int port;
+
+   if (argc < 4)
+   {
+	// print help
+      printf("NOMP pool block notify\n usage: <host:port> <password> <coin> <block>\n");
+      exit(1);
+   }
+
+ strncpy(host,argv[1],(sizeof(host)-1));
+  p=host;
+
+if ( (arg=strchr(p,':')) ) 
+ { *arg='\0';
+
+ errno=0; // reset errno
+ port=strtol(++arg,&errptr,10);
+
+if ( (errno != 0) || (errptr == arg) ) { fprintf(stderr, "port number fail [%s]\n",errptr); }
+// if(strlen(arg) > (errptr-arg) ) also fail, but we ignore it for now
+// printf("host %s:%d\n",host,port);
+}
+
+// printf("pass: %s coin: %s  block:[%s]\n",argv[2],argv[3],argv[4]);
+snprintf(sendline,sizeof(sendline)-1,
+ "{\"password\":\"%s\",\"coin\":\"%s\",\"hash\":\"%s\"}\n",
+		argv[2],	argv[3],	argv[4]);
+
+// printf("sendline:[%s]",sendline);
+
+   sockfd=socket(AF_INET,SOCK_STREAM,0);
+
+   bzero(&servaddr,sizeof(servaddr));
+   servaddr.sin_family = AF_INET;
+   servaddr.sin_addr.s_addr=inet_addr(host);
+   servaddr.sin_port=htons(port);
+
+   connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
+
+      sendto(sockfd,sendline,strlen(sendline),0,
+             (struct sockaddr *)&servaddr,sizeof(servaddr));
+exit(0);
+}