diff options
author | miau <miaukatzemiau@priveasy.de> | 2011-07-11 11:24:52 (GMT) |
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committer | miau <miaukatzemiau@priveasy.de> | 2011-07-11 11:24:52 (GMT) |
commit | 635965049bfd8172adae73557c17cd19f6ea5964 (patch) | |
tree | 699a14c4c1b1897254d6f92d97f663b1d41f8cc9 /broadcaster.c | |
parent | efaa21a4adc37dfa67b70926cc1b9b1d7ecc9768 (diff) |
corrected OpenWRT makefile
builds now when placed in backfire/package
untested if used with feeds
Diffstat (limited to 'broadcaster.c')
-rw-r--r-- | broadcaster.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/broadcaster.c b/broadcaster.c deleted file mode 100644 index 9c02f79..0000000 --- a/broadcaster.c +++ /dev/null @@ -1,74 +0,0 @@ -/* -** broadcaster.c -- a datagram "client" like talker.c, except -** this one can broadcast -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> - -#include "common.h" - -int main(int argc, char *argv[]) -{ - int sockfd; - struct sockaddr_in their_addr; // connector's address information - struct hostent *he; - int numbytes; - int broadcast = 1; - - // assemble packet - if (argc < 3 || argc > 4) { - fprintf(stderr,"usage: broadcaster hostname task [message]\n"); - exit(1); - } - char buf[MAXBUFLEN], - *task = argv[2], - *message = (argc == 4) ? argv[3] : NULL; - int task_len = strlen(task), - total_len = task_len + 1 + strlen(message); - if (total_len > MAXBUFLEN) { - fprintf(stderr,"payload to long: max %d bytes, was %d\n", MAXBUFLEN, total_len); - exit(1); - } - strcpy(buf, task); - buf[task_len] = 0; - strcpy(buf + 1 + task_len, message); - - if ((he=gethostbyname(argv[1])) == NULL) { // get the host info - perror("gethostbyname"); - exit(1); - } - - if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) { - perror("socket"); - exit(1); - } - - // this call is what allows broadcast packets to be sent: - if (setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, &broadcast, - sizeof broadcast) == -1) { - perror("setsockopt (SO_BROADCAST)"); - exit(1); - } - - their_addr.sin_family = AF_INET; // host byte order - their_addr.sin_port = htons(SERVERPORT); // short, network byte order - their_addr.sin_addr = *((struct in_addr *)he->h_addr); - memset(their_addr.sin_zero, '\0', sizeof their_addr.sin_zero); - - if ((numbytes=sendto(sockfd, buf, total_len, 0, - (struct sockaddr *)&their_addr, sizeof their_addr)) == -1) { - perror("sendto"); - exit(1); - } - - return 0; -} |