/* 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 "ip_common.h" /* #include "libbb.h" is inside */
#include "utils.h"
-int preferred_family = AF_UNSPEC;
+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 * const ip_common_commands[] =
- {"-family", "inet", "inet6", "link",
- "-4", "-6", "-0", "-oneline", 0};
+ static const char ip_common_commands[] ALIGN1 =
+ "oneline" "\0"
+ "family" "\0"
+ "4" "\0"
+ "6" "\0"
+ "0" "\0"
+ ;
enum {
- ARG_family = 1,
- ARG_inet,
- ARG_inet6,
- ARG_link,
+ ARG_oneline,
+ ARG_family,
ARG_IPv4,
ARG_IPv6,
ARG_packet,
- ARG_oneline
};
- smalluint arg;
+ static const family_t af_numbers[] = { AF_INET, AF_INET6, AF_PACKET };
+ int arg;
- while (argc > 1) {
- char *opt = argv[1];
+ while (*argv) {
+ char *opt = *argv;
- if (strcmp(opt,"--") == 0) {
- argc--;
- argv++;
- break;
- }
if (opt[0] != '-')
break;
- if (opt[1] == '-')
+ opt++;
+ if (opt[0] == '-') {
opt++;
- arg = index_in_str_array(ip_common_commands, opt) + 1;
+ 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++;
+ continue;
+ }
if (arg == ARG_family) {
- argc--;
+ static const char families[] ALIGN1 =
+ "inet" "\0" "inet6" "\0" "link" "\0";
argv++;
- if (!argv[1])
+ if (!*argv)
bb_show_usage();
- arg = index_in_str_array(ip_common_commands, argv[1]) + 1;
- if (arg == ARG_inet)
- preferred_family = AF_INET;
- else if (arg == ARG_inet6)
- preferred_family = AF_INET6;
- else if (arg == ARG_link)
- preferred_family = AF_PACKET;
- else
- invarg(argv[1], "protocol family");
- } else if (arg == ARG_IPv4) {
- preferred_family = AF_INET;
- } else if (arg == ARG_IPv6) {
- preferred_family = AF_INET6;
- } else if (arg == ARG_packet) {
- preferred_family = AF_PACKET;
- } else if (arg == ARG_oneline) {
- ++oneline;
+ 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--;
+ preferred_family = af_numbers[arg];
argv++;
}
_SL_ = oneline ? '\\' : '\n';
- *argcp = argc;
- *argvp = argv;
+ return argv;
}