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-rw-r--r--training/utils/sentclient.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/training/utils/sentclient.c b/training/utils/sentclient.c
new file mode 100644
index 00000000..91d994ab
--- /dev/null
+++ b/training/utils/sentclient.c
@@ -0,0 +1,76 @@
+/* Copyright (c) 2001 by David Chiang. All rights reserved.*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <string.h>
+
+#include "sentserver.h"
+
+int main (int argc, char *argv[]) {
+ int sock, port;
+ char *s, *key;
+ struct hostent *hp;
+ struct sockaddr_in server;
+ int errors = 0;
+
+ if (argc < 3) {
+ fprintf(stderr, "Usage: sentclient host[:port[:key]] command [args ...]\n");
+ exit(1);
+ }
+
+ s = strchr(argv[1], ':');
+ key = NULL;
+
+ if (s == NULL) {
+ port = DEFAULT_PORT;
+ } else {
+ *s = '\0';
+ s+=1;
+ /* dumb hack */
+ key = strchr(s, ':');
+ if (key != NULL){
+ *key = '\0';
+ key += 1;
+ }
+ port = atoi(s);
+ }
+
+ sock = socket(AF_INET, SOCK_STREAM, 0);
+
+ hp = gethostbyname(argv[1]);
+ if (hp == NULL) {
+ fprintf(stderr, "unknown host %s\n", argv[1]);
+ exit(1);
+ }
+
+ bzero((char *)&server, sizeof(server));
+ bcopy(hp->h_addr, (char *)&server.sin_addr, hp->h_length);
+ server.sin_family = hp->h_addrtype;
+ server.sin_port = htons(port);
+
+ while (connect(sock, (struct sockaddr *)&server, sizeof(server)) < 0) {
+ perror("connect()");
+ sleep(1);
+ errors++;
+ if (errors > 5)
+ exit(1);
+ }
+
+ close(0);
+ close(1);
+ dup2(sock, 0);
+ dup2(sock, 1);
+
+ if (key != NULL){
+ write(1, key, strlen(key));
+ write(1, "\n", 1);
+ }
+
+ execvp(argv[2], argv+2);
+ return 0;
+}