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-rw-r--r--src/c-ares/ahost.c206
1 files changed, 206 insertions, 0 deletions
diff --git a/src/c-ares/ahost.c b/src/c-ares/ahost.c
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+++ b/src/c-ares/ahost.c
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+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#if !defined(WIN32) || defined(WATT32)
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_getopt.h"
+#include "ares_ipv6.h"
+#include "ares_nowarn.h"
+
+#ifndef HAVE_STRDUP
+# include "ares_strdup.h"
+# define strdup(ptr) ares_strdup(ptr)
+#endif
+
+#ifndef HAVE_STRCASECMP
+# include "ares_strcasecmp.h"
+# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2)
+#endif
+
+#ifndef HAVE_STRNCASECMP
+# include "ares_strcasecmp.h"
+# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n)
+#endif
+
+static void callback(void *arg, int status, int timeouts, struct hostent *host);
+static void usage(void);
+
+int main(int argc, char **argv)
+{
+ struct ares_options options;
+ int optmask = 0;
+ ares_channel channel;
+ int status, nfds, c, addr_family = AF_INET;
+ fd_set read_fds, write_fds;
+ struct timeval *tvp, tv;
+ struct in_addr addr4;
+ struct ares_in6_addr addr6;
+
+#ifdef USE_WINSOCK
+ WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK);
+ WSADATA wsaData;
+ WSAStartup(wVersionRequested, &wsaData);
+#endif
+
+ memset(&options, 0, sizeof(options));
+
+ status = ares_library_init(ARES_LIB_INIT_ALL);
+ if (status != ARES_SUCCESS)
+ {
+ fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status));
+ return 1;
+ }
+
+ while ((c = ares_getopt(argc,argv,"dt:hs:")) != -1)
+ {
+ switch (c)
+ {
+ case 'd':
+#ifdef WATT32
+ dbug_init();
+#endif
+ break;
+ case 's':
+ optmask |= ARES_OPT_DOMAINS;
+ options.ndomains++;
+ options.domains = (char **)realloc(options.domains,
+ options.ndomains * sizeof(char *));
+ options.domains[options.ndomains - 1] = strdup(optarg);
+ break;
+ case 't':
+ if (!strcasecmp(optarg,"a"))
+ addr_family = AF_INET;
+ else if (!strcasecmp(optarg,"aaaa"))
+ addr_family = AF_INET6;
+ else if (!strcasecmp(optarg,"u"))
+ addr_family = AF_UNSPEC;
+ else
+ usage();
+ break;
+ case 'h':
+ default:
+ usage();
+ break;
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+ if (argc < 1)
+ usage();
+
+ status = ares_init_options(&channel, &options, optmask);
+ if (status != ARES_SUCCESS)
+ {
+ fprintf(stderr, "ares_init: %s\n", ares_strerror(status));
+ return 1;
+ }
+
+ /* Initiate the queries, one per command-line argument. */
+ for ( ; *argv; argv++)
+ {
+ if (ares_inet_pton(AF_INET, *argv, &addr4) == 1)
+ {
+ ares_gethostbyaddr(channel, &addr4, sizeof(addr4), AF_INET, callback,
+ *argv);
+ }
+ else if (ares_inet_pton(AF_INET6, *argv, &addr6) == 1)
+ {
+ ares_gethostbyaddr(channel, &addr6, sizeof(addr6), AF_INET6, callback,
+ *argv);
+ }
+ else
+ {
+ ares_gethostbyname(channel, *argv, addr_family, callback, *argv);
+ }
+ }
+
+ /* Wait for all queries to complete. */
+ for (;;)
+ {
+ int res;
+ FD_ZERO(&read_fds);
+ FD_ZERO(&write_fds);
+ nfds = ares_fds(channel, &read_fds, &write_fds);
+ if (nfds == 0)
+ break;
+ tvp = ares_timeout(channel, NULL, &tv);
+ res = select(nfds, &read_fds, &write_fds, NULL, tvp);
+ if (-1 == res)
+ break;
+ ares_process(channel, &read_fds, &write_fds);
+ }
+
+ ares_destroy(channel);
+
+ ares_library_cleanup();
+
+#ifdef USE_WINSOCK
+ WSACleanup();
+#endif
+
+ return 0;
+}
+
+static void callback(void *arg, int status, int timeouts, struct hostent *host)
+{
+ char **p;
+
+ (void)timeouts;
+
+ if (status != ARES_SUCCESS)
+ {
+ fprintf(stderr, "%s: %s\n", (char *) arg, ares_strerror(status));
+ return;
+ }
+
+ for (p = host->h_addr_list; *p; p++)
+ {
+ char addr_buf[46] = "??";
+
+ ares_inet_ntop(host->h_addrtype, *p, addr_buf, sizeof(addr_buf));
+ printf("%-32s\t%s", host->h_name, addr_buf);
+#if 0
+ if (host->h_aliases[0])
+ {
+ int i;
+
+ printf (", Aliases: ");
+ for (i = 0; host->h_aliases[i]; i++)
+ printf("%s ", host->h_aliases[i]);
+ }
+#endif
+ puts("");
+ }
+}
+
+static void usage(void)
+{
+ fprintf(stderr, "usage: ahost [-t {a|aaaa|u}] {host|addr} ...\n");
+ exit(1);
+}