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authorhpa <hpa>2004-12-28 23:49:43 +0000
committerhpa <hpa>2004-12-28 23:49:43 +0000
commit01b268cbf57515c37cad7dde05b6503e8d64bd5f (patch)
treeb0f83e49823cea949bf8644071f0aca4dade270c /com32/samples/resolv.c
parentb276b20eebea84bdf991d07da1bdff4c23b430c8 (diff)
downloadsyslinux-01b268cbf57515c37cad7dde05b6503e8d64bd5f.tar.gz
syslinux-01b268cbf57515c37cad7dde05b6503e8d64bd5f.tar.xz
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Fix using the resolver function from the API (with DS != CS); addsyslinux-3.00-pre8
test/sample file to do that; fix bug in chain.c.
Diffstat (limited to 'com32/samples/resolv.c')
-rw-r--r--com32/samples/resolv.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/com32/samples/resolv.c b/com32/samples/resolv.c
new file mode 100644
index 00000000..c82a974f
--- /dev/null
+++ b/com32/samples/resolv.c
@@ -0,0 +1,67 @@
+#ident "$Id$"
+/* ----------------------------------------------------------------------- *
+ *
+ * Copyright 2004 H. Peter Anvin - All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ * Boston MA 02111-1307, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * resolv.c
+ *
+ * Resolve an IP address
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <console.h>
+#include <stdlib.h>
+#include <com32.h>
+
+uint32_t resolv(const char *name)
+{
+ com32sys_t reg;
+
+ strcpy((char *)__com32.cs_bounce, name);
+
+ memset(&reg, 0, sizeof reg);
+ reg.eax.w[0] = 0x0010;
+ reg.ebx.w[0] = OFFS(__com32.cs_bounce);
+ reg.es = SEG(__com32.cs_bounce);
+
+ __intcall(0x22, &reg, &reg);
+
+ if ( reg.eflags.l & EFLAGS_CF )
+ return 0;
+ else
+ return reg.eax.l;
+}
+
+int main(int argc, char *argv[])
+{
+ uint32_t ip;
+
+ openconsole(&dev_null_r, &dev_stdcon_w);
+
+ if ( argc < 2 ) {
+ fputs("Usage: resolv hostname\n", stderr);
+ exit(1);
+ }
+
+ ip = resolv(argv[1]);
+
+ if ( ip ) {
+ printf("%s = %u.%u.%u.%u\n", argv[1],
+ (ip & 0xff), (ip >> 8) & 0xff,
+ (ip >> 16) & 0xff, (ip >> 24) & 0xff);
+ } else {
+ printf("%s not found\n", argv[1]);
+ }
+
+ return 0;
+}