1 files changed, 43 insertions, 0 deletions
diff --git a/util.c b/util.c
index e8c92cc..9d9c5d3 100644
--- a/util.c
+++ b/util.c
@@ -1,6 +1,11 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <sys/socket.h>
+#include <errno.h>
 #include "memory.h"
 #include "util.h"
 
@@ -22,3 +27,41 @@ void str_toupper(char *str){
 		str++;
 	}
 }
+
+
+// Returns -1 on error, 0 on success
+int sendall(int sock,const char *buf,ssize_t len){
+	if(len==-1){
+		len=strlen(buf);
+	}
+
+	ssize_t sent=0;
+	while(sent<len){
+		ssize_t ret=send(sock,buf+sent,len-sent,0);
+		if(ret<0){
+			if(errno==EINTR){
+				continue;
+			} else {
+				return -1;
+			}
+		}
+		sent+=ret;
+	}
+
+	return 0;
+}
+
+__attribute__((format (printf, 2, 3)))
+int sendallf(int sock,const char *format,...){
+	va_list ap;
+	va_start(ap,format);
+	char *buf;
+	int len=vasprintf(&buf,format,ap);
+	va_end(ap);
+	if(len<0){
+		return -1;
+	}
+	int ret=sendall(sock,buf,len);
+	free(buf);
+	return ret;
+}