+/* vi: set sw=4 ts=4: */
/*
- * ip.c "ip" utility frontend.
- *
- * 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; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
*
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* Changes:
*
- * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
*/
-#include <string.h>
-
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "utils.h"
-#include "ip_common.h"
-
-#include "busybox.h"
-int preferred_family = AF_UNSPEC;
-int oneline = 0;
-char * _SL_ = NULL;
+family_t preferred_family = AF_UNSPEC;
+smallint oneline;
+char _SL_;
-void ip_parse_common_args(int *argcp, char ***argvp)
+char** FAST_FUNC ip_parse_common_args(char **argv)
{
- int argc = *argcp;
- char **argv = *argvp;
+ static const char ip_common_commands[] ALIGN1 =
+ "oneline" "\0"
+ "family" "\0"
+ "4" "\0"
+ "6" "\0"
+ "0" "\0"
+ ;
+ enum {
+ ARG_oneline,
+ ARG_family,
+ ARG_IPv4,
+ ARG_IPv6,
+ ARG_packet,
+ };
+ static const family_t af_numbers[] = { AF_INET, AF_INET6, AF_PACKET };
+ int arg;
- while (argc > 1) {
- char *opt = argv[1];
-
- if (strcmp(opt,"--") == 0) {
- argc--; argv++;
- break;
- }
+ while (*argv) {
+ char *opt = *argv;
if (opt[0] != '-')
break;
-
- if (opt[1] == '-')
+ opt++;
+ if (opt[0] == '-') {
opt++;
-
- if (matches(opt, "-family") == 0) {
- argc--;
+ if (!opt[0]) { /* "--" */
+ argv++;
+ break;
+ }
+ }
+ arg = index_in_substrings(ip_common_commands, opt);
+ if (arg < 0)
+ bb_show_usage();
+ if (arg == ARG_oneline) {
+ oneline = 1;
argv++;
- if (! argv[1])
- bb_show_usage();
- if (strcmp(argv[1], "inet") == 0)
- preferred_family = AF_INET;
- else if (strcmp(argv[1], "inet6") == 0)
- preferred_family = AF_INET6;
- else if (strcmp(argv[1], "link") == 0)
- preferred_family = AF_PACKET;
- else
- invarg(argv[1], "invalid protocol family");
- } else if (strcmp(opt, "-4") == 0) {
- preferred_family = AF_INET;
- } else if (strcmp(opt, "-6") == 0) {
- preferred_family = AF_INET6;
- } else if (strcmp(opt, "-0") == 0) {
- preferred_family = AF_PACKET;
- } else if (matches(opt, "-oneline") == 0) {
- ++oneline;
+ continue;
+ }
+ if (arg == ARG_family) {
+ static const char families[] ALIGN1 =
+ "inet" "\0" "inet6" "\0" "link" "\0";
+ argv++;
+ if (!*argv)
+ bb_show_usage();
+ arg = index_in_strings(families, *argv);
+ if (arg < 0)
+ invarg(*argv, "protocol family");
+ /* now arg == 0, 1 or 2 */
} else {
- bb_show_usage();
+ arg -= ARG_IPv4;
+ /* now arg == 0, 1 or 2 */
}
- argc--; argv++;
+ preferred_family = af_numbers[arg];
+ argv++;
}
- _SL_ = oneline ? "\\" : "\n" ;
+ _SL_ = oneline ? '\\' : '\n';
+ return argv;
}