1 files changed, 73 insertions, 0 deletions
diff --git a/kris/util.c b/kris/util.c
new file mode 100644
index 0000000..19c2f2b
--- /dev/null
+++ b/kris/util.c
@@ -0,0 +1,73 @@
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+static void
+eprint(const char *fmt, ...) {
+
+	va_buf(bufout, fmt);
+	fprintf(stderr, "%s", bufout);
+
+	if(fmt[0] && fmt[strlen(fmt)-1] == ':')
+		fprintf(stderr, " %s\n", strerror(errno));
+	exit(1);
+}
+
+static int
+dial(char *host, int port) {
+	struct hostent *hp;
+	static struct sockaddr_in addr;
+	int i;
+
+	if((i = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+		eprint("sic: cannot connect host '%s':", host);
+	if(nil == (hp = gethostbyname(host)))
+		eprint("sic: cannot resolve hostname '%s': %s\n", host, hstrerror(h_errno));
+	addr.sin_family = AF_INET;
+	addr.sin_port = htons(port);
+	memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
+	if(connect(i, (struct sockaddr*)&addr, sizeof(struct sockaddr_in)))
+		eprint("sic: cannot connect host '%s':", host);
+	return i;
+}
+
+#define strlcpy _strlcpy
+static void
+strlcpy(char *to, const char *from, int l) {
+	strncpy(to, from, l-1);
+	to[l-1] = '\0';
+}
+
+static void
+eat(char **s, int (*p)(int), int r) {
+	char *q;
+
+	for(q=*s; *q && p(*q) == r; q++)
+		;
+	*s = q;
+}
+
+static char*
+tok(char **s) {
+	char *p;
+
+	eat(s, isspace, 1);
+	p = *s;
+	eat(s, isspace, 0);
+	if(**s) *(*s)++ = '\0';
+	return p;
+}
+
+static char*
+ctok(char **s, int c) {
+	char *p, *q;
+
+	q = *s;
+	for(p=q; *p && *p != c; p++)
+		;
+	if(*p) *p++ = '\0';
+	*s = p;
+	return q;
+}
+
+