Changeset 7262f89 in mainline for uspace/srv/net/dnsres/dnsres.c

Timestamp:

2013-04-20T10:42:13Z (11 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

dc95342

Parents:

f1dcf6d

Message:

Construct domain names, fix some bugs. Parse answer, print resulting hostname and IP address.

File:

• uspace/srv/net/dnsres/dnsres.c (modified) (2 diffs)

uspace/srv/net/dnsres/dnsres.c

@@ -35 +35 @@
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <errno.h>
 
@@ -43 +44 @@
 #define NAME  "dnsres"
 
+static int addr_format(inet_addr_t *addr, char **bufp)
+{
+        int rc;
+
+        rc = asprintf(bufp, "%d.%d.%d.%d", addr->ipv4 >> 24,
+            (addr->ipv4 >> 16) & 0xff, (addr->ipv4 >> 8) & 0xff,
+            addr->ipv4 & 0xff);
+
+        if (rc < 0)
+                return ENOMEM;
+
+        return EOK;
+}
+
 int main(int argc, char *argv[])
 {
         dns_host_info_t hinfo;
+        char *astr;
         int rc;
 
         printf("%s: DNS Resolution Service\n", NAME);
-        rc = dns_name2host("helenos.org", &hinfo);
+        rc = dns_name2host(argc < 2 ? "helenos.org" : argv[1], &hinfo);
         printf("dns_name2host() -> rc = %d\n", rc);
+
+        if (rc == EOK) {
+                rc = addr_format(&hinfo.addr, &astr);
+                if (rc != EOK) {
+                        printf("Out of memory\n");
+                        return ENOMEM;
+                }
+
+                printf("hostname: %s\n", hinfo.name);
+                printf("IPv4 address: %s\n", astr);
+                free(astr);
+        }
 
         return 0;