1 files changed, 65 insertions, 0 deletions
diff --git a/src/gns/nss/nss_gns_query.c b/src/gns/nss/nss_gns_query.c
new file mode 100644
index 0000000..ab88d22
--- /dev/null
+++ b/src/gns/nss/nss_gns_query.c
@@ -0,0 +1,65 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "nss_gns_query.h"
+#include <arpa/inet.h>
+
+
+/**
+ * Wrapper function that uses gnunet-gns cli tool to resolve
+ * an IPv4/6 address.
+ *
+ * @param af address family
+ * @param name the name to resolve
+ * @param u the userdata (result struct)
+ * @return -1 on error else 0
+ */
+int gns_resolve_name(int af, const char *name, struct userdata *u)
+{
+  FILE *p;
+  char *cmd;
+  char line[128];
+
+  if (af == AF_INET6)
+  {
+    if (-1 == asprintf(&cmd, "%s -t AAAA -u %s\n", "gnunet-gns -r", name))
+      return -1;
+  }
+  else
+  {
+    if (-1 == asprintf(&cmd, "%s %s\n", "gnunet-gns -r -u", name))
+      return -1;
+  }
+
+  p = popen(cmd,"r");
+
+  if (p != NULL )
+  {
+    while (fgets( line, sizeof(line), p ) != NULL)
+    {
+
+      if (u->count >= MAX_ENTRIES)
+        break;
+
+      if (line[strlen(line)-1] == '\n')
+      {
+        line[strlen(line)-1] = '\0';
+        if (af == AF_INET)
+        {
+          inet_pton(af, line, &(u->data.ipv4[u->count++]));
+          u->data_len += sizeof(ipv4_address_t);
+        }
+        else if ((af == AF_INET6))
+        {
+          inet_pton(af, line, &(u->data.ipv6[u->count++]));
+          u->data_len += sizeof(ipv6_address_t);
+        }
+      }
+    }
+  }
+  fclose(p);
+  free(cmd);
+
+  return 0;
+
+}