1 files changed, 143 insertions, 0 deletions
diff --git a/arlib/sample.c b/arlib/sample.c
new file mode 100644
index 0000000..83db6a8
--- /dev/null
+++ b/arlib/sample.c
@@ -0,0 +1,143 @@
+#include <stdio.h>
+#include <strings.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include "arlib.h"
+
+#ifndef	lint
+static	char	sccsid[] = "@(#)sample.c	1.1 12/21/92 (C)1992 Darren Reed. ASYNC DNS";
+#endif
+
+char	line[512];
+
+int	lookup = 0, seq = 0;
+long	expire = 0;
+
+main()
+{
+	struct	in_addr adr;
+	struct	timeval	tv2;
+	fd_set	rd;
+	long	now;
+	char	*s;
+	int	afd, nfd, pid = getpid(), del;
+
+	afd = ar_init(ARES_INITLIST|ARES_CALLINIT|ARES_INITSOCK);
+
+	(void)printf("afd = %d pid = %d\n",afd, pid);
+
+	while (1)
+	{
+		(void)printf("Host =>");
+		(void)fflush(stdout);
+		*line = '\0';
+		FD_ZERO(&rd);
+		FD_SET(0,&rd);
+		FD_SET(afd,&rd);
+		now = time(NULL);
+		if (expire >= now)
+		    {
+			tv2.tv_usec = 0;
+			tv2.tv_sec = expire - now;
+			nfd = select(FD_SETSIZE, &rd, NULL, NULL, &tv2);
+		    }
+		else
+			nfd = select(FD_SETSIZE, &rd, NULL, NULL, NULL);
+
+		if (FD_ISSET(0, &rd))
+		{
+			if (!fgets(line, sizeof(line) - 1, stdin))
+				exit(0);
+			if (s = index(line, '\n'))
+				*s = '\0';
+		}
+
+		if (isalpha(*line))
+		{
+			(void)printf("Asking about [%s] #%d.\n",line, ++seq);
+			(void)ar_gethostbyname(line, (char *)&seq,
+					       sizeof(seq));
+			lookup++;
+		}
+		else if (isdigit(*line))
+		{
+			(void)printf("Asking about IP#[%s] #%d.\n",
+				line, ++seq);
+			adr.s_addr = inet_addr(line);
+			(void)ar_gethostbyaddr(&adr, (char *)&seq,
+					       sizeof(seq));
+			lookup++;
+		}
+		if (lookup)
+			(void)printf("Waiting for answer:\n");
+		if (FD_ISSET(afd, &rd))
+			(void)waitonlookup(afd);
+		del = 0;
+		expire = ar_timeout(time(NULL), &del, sizeof(del));
+		if (del)
+		{
+			(void)fprintf(stderr,"#%d failed\n", del);
+			lookup--;
+		}
+	}
+}
+
+printhostent(hp)
+struct hostent *hp;
+{
+	struct in_addr ip;
+	int i;
+
+	(void)printf("hname = %s\n", hp->h_name);
+	for (i = 0; hp->h_aliases[i]; i++)
+		(void)printf("alias %d = %s\n", i+1, hp->h_aliases[i]);
+	for (i = 0; hp->h_addr_list[i]; i++)
+	{
+		bcopy(hp->h_addr_list[i], (char *)&ip, sizeof(ip));
+		(void)printf("IP# %d = %s\n", i+1, inet_ntoa(ip));
+	}
+}
+
+int	waitonlookup(afd)
+int	afd;
+{
+	struct	timeval delay;
+	struct	hostent	*hp;
+	fd_set	rd;
+	long	now;
+	int	nfd, del;
+
+waitloop:
+	FD_ZERO(&rd);
+	now = time(NULL);
+	if (expire >= now)
+		delay.tv_sec = expire - now;
+	else
+		delay.tv_sec = 1;
+	delay.tv_usec = 0;
+	FD_SET(afd, &rd);
+	FD_SET(0, &rd);
+
+	nfd = select(FD_SETSIZE, &rd, 0, 0, &delay);
+	if (nfd == 0)
+		return 0;
+	else if (FD_ISSET(afd, &rd))
+	{
+		del = 0;
+		hp = ar_answer(&del, sizeof(del));
+
+		(void)printf("hp=%x seq=%d\n",hp,del);
+		if (hp)
+		    {
+			(void)printhostent(hp);
+			if (!--lookup)
+				return 1;
+		    }
+	}
+	if (FD_ISSET(0, &rd))
+		return 2;
+	return 0;
+}