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65c501a093
When a static interface with explicit gateway and metric in /etc/network/interfaces is enabled using 'ifup', and further, the BusyBox 'ip' applet is enabled, the following error message appears at the console (and no default route is added): ip: either "to" is duplicate, or "prio" is garbage Tracing ifup reveals that it is attempting to run the following shell command: ip route add default via <GW> dev <DEVICE> prio <METRIC> 'ip' does not understand the 'prio' argument, causing this error. With 'metric', it works fine. Signed-off-by: Alex Dowad <alexinbeijing@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1366 lines
36 KiB
C
1366 lines
36 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* ifupdown for busybox
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* Copyright (c) 2002 Glenn McGrath
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* Copyright (c) 2003-2004 Erik Andersen <andersen@codepoet.org>
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*
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* Based on ifupdown v 0.6.4 by Anthony Towns
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* Copyright (c) 1999 Anthony Towns <aj@azure.humbug.org.au>
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*
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* Changes to upstream version
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* Remove checks for kernel version, assume kernel version 2.2.0 or better.
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* Lines in the interfaces file cannot wrap.
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* To adhere to the FHS, the default state file is /var/run/ifstate
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* (defined via CONFIG_IFUPDOWN_IFSTATE_PATH) and can be overridden by build
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* configuration.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//usage:#define ifup_trivial_usage
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//usage: "[-an"IF_FEATURE_IFUPDOWN_MAPPING("m")"vf] [-i FILE] IFACE..."
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//usage:#define ifup_full_usage "\n\n"
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//usage: " -a De/configure all interfaces automatically"
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//usage: "\n -i FILE Use FILE for interface definitions"
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//usage: "\n -n Print out what would happen, but don't do it"
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//usage: IF_FEATURE_IFUPDOWN_MAPPING(
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//usage: "\n (note: doesn't disable mappings)"
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//usage: "\n -m Don't run any mappings"
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//usage: )
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//usage: "\n -v Print out what would happen before doing it"
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//usage: "\n -f Force de/configuration"
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//usage:
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//usage:#define ifdown_trivial_usage
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//usage: "[-an"IF_FEATURE_IFUPDOWN_MAPPING("m")"vf] [-i FILE] IFACE..."
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//usage:#define ifdown_full_usage "\n\n"
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//usage: " -a De/configure all interfaces automatically"
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//usage: "\n -i FILE Use FILE for interface definitions"
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//usage: "\n -n Print out what would happen, but don't do it"
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//usage: IF_FEATURE_IFUPDOWN_MAPPING(
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//usage: "\n (note: doesn't disable mappings)"
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//usage: "\n -m Don't run any mappings"
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//usage: )
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//usage: "\n -v Print out what would happen before doing it"
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//usage: "\n -f Force de/configuration"
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#include "libbb.h"
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/* After libbb.h, since it needs sys/types.h on some systems */
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#include <sys/utsname.h>
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#include <fnmatch.h>
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#define MAX_OPT_DEPTH 10
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#if ENABLE_FEATURE_IFUPDOWN_MAPPING
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#define MAX_INTERFACE_LENGTH 10
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#endif
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#define UDHCPC_CMD_OPTIONS CONFIG_IFUPDOWN_UDHCPC_CMD_OPTIONS
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#define debug_noise(args...) /*fprintf(stderr, args)*/
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/* Forward declaration */
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struct interface_defn_t;
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typedef int execfn(char *command);
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struct method_t {
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const char *name;
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int (*up)(struct interface_defn_t *ifd, execfn *e) FAST_FUNC;
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int (*down)(struct interface_defn_t *ifd, execfn *e) FAST_FUNC;
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};
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struct address_family_t {
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const char *name;
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int n_methods;
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const struct method_t *method;
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};
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struct mapping_defn_t {
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struct mapping_defn_t *next;
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int max_matches;
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int n_matches;
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char **match;
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char *script;
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int n_mappings;
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char **mapping;
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};
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struct variable_t {
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char *name;
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char *value;
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};
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struct interface_defn_t {
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const struct address_family_t *address_family;
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const struct method_t *method;
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char *iface;
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int n_options;
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struct variable_t *option;
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};
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struct interfaces_file_t {
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llist_t *autointerfaces;
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llist_t *ifaces;
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struct mapping_defn_t *mappings;
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};
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#define OPTION_STR "anvf" IF_FEATURE_IFUPDOWN_MAPPING("m") "i:"
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enum {
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OPT_do_all = 0x1,
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OPT_no_act = 0x2,
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OPT_verbose = 0x4,
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OPT_force = 0x8,
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OPT_no_mappings = 0x10,
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};
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#define DO_ALL (option_mask32 & OPT_do_all)
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#define NO_ACT (option_mask32 & OPT_no_act)
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#define VERBOSE (option_mask32 & OPT_verbose)
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#define FORCE (option_mask32 & OPT_force)
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#define NO_MAPPINGS (option_mask32 & OPT_no_mappings)
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struct globals {
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char **my_environ;
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const char *startup_PATH;
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char *shell;
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} FIX_ALIASING;
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#define G (*(struct globals*)&bb_common_bufsiz1)
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#define INIT_G() do { } while (0)
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static const char keywords_up_down[] ALIGN1 =
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"up\0"
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"down\0"
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"pre-up\0"
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"post-down\0"
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;
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#if ENABLE_FEATURE_IFUPDOWN_IPV4 || ENABLE_FEATURE_IFUPDOWN_IPV6
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static void addstr(char **bufp, const char *str, size_t str_length)
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{
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/* xasprintf trick will be smaller, but we are often
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* called with str_length == 1 - don't want to have
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* THAT much of malloc/freeing! */
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char *buf = *bufp;
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int len = (buf ? strlen(buf) : 0);
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str_length++;
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buf = xrealloc(buf, len + str_length);
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/* copies at most str_length-1 chars! */
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safe_strncpy(buf + len, str, str_length);
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*bufp = buf;
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}
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static int strncmpz(const char *l, const char *r, size_t llen)
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{
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int i = strncmp(l, r, llen);
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if (i == 0)
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return - (unsigned char)r[llen];
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return i;
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}
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static char *get_var(const char *id, size_t idlen, struct interface_defn_t *ifd)
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{
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int i;
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if (strncmpz(id, "iface", idlen) == 0) {
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// ubuntu's ifup doesn't do this:
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//static char *label_buf;
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//char *result;
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//free(label_buf);
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//label_buf = xstrdup(ifd->iface);
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// Remove virtual iface suffix
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//result = strchrnul(label_buf, ':');
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//*result = '\0';
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//return label_buf;
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return ifd->iface;
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}
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if (strncmpz(id, "label", idlen) == 0) {
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return ifd->iface;
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}
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for (i = 0; i < ifd->n_options; i++) {
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if (strncmpz(id, ifd->option[i].name, idlen) == 0) {
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return ifd->option[i].value;
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}
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}
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return NULL;
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}
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# if ENABLE_FEATURE_IFUPDOWN_IP
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static int count_netmask_bits(const char *dotted_quad)
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{
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// int result;
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// unsigned a, b, c, d;
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// /* Found a netmask... Check if it is dotted quad */
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// if (sscanf(dotted_quad, "%u.%u.%u.%u", &a, &b, &c, &d) != 4)
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// return -1;
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// if ((a|b|c|d) >> 8)
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// return -1; /* one of numbers is >= 256 */
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// d |= (a << 24) | (b << 16) | (c << 8); /* IP */
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// d = ~d; /* 11110000 -> 00001111 */
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/* Shorter version */
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int result;
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struct in_addr ip;
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unsigned d;
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if (inet_aton(dotted_quad, &ip) == 0)
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return -1; /* malformed dotted IP */
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d = ntohl(ip.s_addr); /* IP in host order */
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d = ~d; /* 11110000 -> 00001111 */
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if (d & (d+1)) /* check that it is in 00001111 form */
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return -1; /* no it is not */
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result = 32;
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while (d) {
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d >>= 1;
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result--;
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}
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return result;
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}
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# endif
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static char *parse(const char *command, struct interface_defn_t *ifd)
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{
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size_t old_pos[MAX_OPT_DEPTH] = { 0 };
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smallint okay[MAX_OPT_DEPTH] = { 1 };
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int opt_depth = 1;
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char *result = NULL;
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while (*command) {
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switch (*command) {
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default:
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addstr(&result, command, 1);
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command++;
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break;
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case '\\':
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if (command[1])
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command++;
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addstr(&result, command, 1);
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command++;
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break;
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case '[':
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if (command[1] == '[' && opt_depth < MAX_OPT_DEPTH) {
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old_pos[opt_depth] = result ? strlen(result) : 0;
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okay[opt_depth] = 1;
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opt_depth++;
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command += 2;
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} else {
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addstr(&result, command, 1);
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command++;
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}
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break;
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case ']':
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if (command[1] == ']' && opt_depth > 1) {
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opt_depth--;
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if (!okay[opt_depth]) {
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result[old_pos[opt_depth]] = '\0';
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}
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command += 2;
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} else {
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addstr(&result, command, 1);
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command++;
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}
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break;
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case '%':
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{
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char *nextpercent;
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char *varvalue;
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command++;
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nextpercent = strchr(command, '%');
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if (!nextpercent) {
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/* Unterminated %var% */
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free(result);
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return NULL;
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}
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varvalue = get_var(command, nextpercent - command, ifd);
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if (varvalue) {
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* "hwaddress <class> <address>":
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* unlike ifconfig, ip doesnt want <class>
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* (usually "ether" keyword). Skip it. */
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if (is_prefixed_with(command, "hwaddress")) {
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varvalue = skip_whitespace(skip_non_whitespace(varvalue));
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}
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# endif
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addstr(&result, varvalue, strlen(varvalue));
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} else {
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# if ENABLE_FEATURE_IFUPDOWN_IP
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/* Sigh... Add a special case for 'ip' to convert from
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* dotted quad to bit count style netmasks. */
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if (is_prefixed_with(command, "bnmask")) {
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unsigned res;
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varvalue = get_var("netmask", 7, ifd);
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if (varvalue) {
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res = count_netmask_bits(varvalue);
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if (res > 0) {
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const char *argument = utoa(res);
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addstr(&result, argument, strlen(argument));
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command = nextpercent + 1;
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break;
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}
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}
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}
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# endif
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okay[opt_depth - 1] = 0;
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}
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command = nextpercent + 1;
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}
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break;
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}
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}
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if (opt_depth > 1) {
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/* Unbalanced bracket */
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free(result);
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return NULL;
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}
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if (!okay[0]) {
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/* Undefined variable and we aren't in a bracket */
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free(result);
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return NULL;
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}
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return result;
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}
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/* execute() returns 1 for success and 0 for failure */
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static int execute(const char *command, struct interface_defn_t *ifd, execfn *exec)
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{
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char *out;
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int ret;
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out = parse(command, ifd);
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if (!out) {
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/* parse error? */
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return 0;
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}
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/* out == "": parsed ok but not all needed variables known, skip */
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ret = out[0] ? (*exec)(out) : 1;
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free(out);
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if (ret != 1) {
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return 0;
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}
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return 1;
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}
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#endif /* FEATURE_IFUPDOWN_IPV4 || FEATURE_IFUPDOWN_IPV6 */
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#if ENABLE_FEATURE_IFUPDOWN_IPV6
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static int FAST_FUNC loopback_up6(struct interface_defn_t *ifd, execfn *exec)
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{
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# if ENABLE_FEATURE_IFUPDOWN_IP
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int result;
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result = execute("ip addr add ::1 dev %iface%", ifd, exec);
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result += execute("ip link set %iface% up", ifd, exec);
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return ((result == 2) ? 2 : 0);
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# else
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return execute("ifconfig %iface% add ::1", ifd, exec);
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# endif
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}
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static int FAST_FUNC loopback_down6(struct interface_defn_t *ifd, execfn *exec)
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{
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# if ENABLE_FEATURE_IFUPDOWN_IP
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return execute("ip link set %iface% down", ifd, exec);
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# else
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return execute("ifconfig %iface% del ::1", ifd, exec);
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# endif
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}
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static int FAST_FUNC manual_up_down6(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
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{
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return 1;
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}
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static int FAST_FUNC static_up6(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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# if ENABLE_FEATURE_IFUPDOWN_IP
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result = execute("ip addr add %address%/%netmask% dev %iface%[[ label %label%]]", ifd, exec);
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result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
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/* Was: "[[ ip ....%gateway% ]]". Removed extra spaces w/o checking */
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result += execute("[[ip route add ::/0 via %gateway%]][[ metric %metric%]]", ifd, exec);
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# else
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result = execute("ifconfig %iface%[[ media %media%]][[ hw %hwaddress%]][[ mtu %mtu%]] up", ifd, exec);
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result += execute("ifconfig %iface% add %address%/%netmask%", ifd, exec);
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result += execute("[[route -A inet6 add ::/0 gw %gateway%[[ metric %metric%]]]]", ifd, exec);
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# endif
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return ((result == 3) ? 3 : 0);
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}
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static int FAST_FUNC static_down6(struct interface_defn_t *ifd, execfn *exec)
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{
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# if ENABLE_FEATURE_IFUPDOWN_IP
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return execute("ip link set %iface% down", ifd, exec);
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# else
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return execute("ifconfig %iface% down", ifd, exec);
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# endif
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}
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# if ENABLE_FEATURE_IFUPDOWN_IP
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static int FAST_FUNC v4tunnel_up(struct interface_defn_t *ifd, execfn *exec)
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{
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int result;
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result = execute("ip tunnel add %iface% mode sit remote "
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"%endpoint%[[ local %local%]][[ ttl %ttl%]]", ifd, exec);
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result += execute("ip link set %iface% up", ifd, exec);
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result += execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec);
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result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec);
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return ((result == 4) ? 4 : 0);
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}
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static int FAST_FUNC v4tunnel_down(struct interface_defn_t * ifd, execfn * exec)
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{
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return execute("ip tunnel del %iface%", ifd, exec);
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}
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# endif
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static const struct method_t methods6[] = {
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# if ENABLE_FEATURE_IFUPDOWN_IP
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{ "v4tunnel" , v4tunnel_up , v4tunnel_down , },
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# endif
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{ "static" , static_up6 , static_down6 , },
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{ "manual" , manual_up_down6 , manual_up_down6 , },
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{ "loopback" , loopback_up6 , loopback_down6 , },
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};
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static const struct address_family_t addr_inet6 = {
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"inet6",
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ARRAY_SIZE(methods6),
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methods6
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};
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#endif /* FEATURE_IFUPDOWN_IPV6 */
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|
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#if ENABLE_FEATURE_IFUPDOWN_IPV4
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static int FAST_FUNC loopback_up(struct interface_defn_t *ifd, execfn *exec)
|
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{
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# if ENABLE_FEATURE_IFUPDOWN_IP
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int result;
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result = execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec);
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result += execute("ip link set %iface% up", ifd, exec);
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return ((result == 2) ? 2 : 0);
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# else
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return execute("ifconfig %iface% 127.0.0.1 up", ifd, exec);
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# endif
|
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}
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|
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static int FAST_FUNC loopback_down(struct interface_defn_t *ifd, execfn *exec)
|
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{
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# if ENABLE_FEATURE_IFUPDOWN_IP
|
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int result;
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result = execute("ip addr flush dev %iface%", ifd, exec);
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result += execute("ip link set %iface% down", ifd, exec);
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return ((result == 2) ? 2 : 0);
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# else
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return execute("ifconfig %iface% 127.0.0.1 down", ifd, exec);
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# endif
|
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}
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|
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static int FAST_FUNC static_up(struct interface_defn_t *ifd, execfn *exec)
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{
|
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int result;
|
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# if ENABLE_FEATURE_IFUPDOWN_IP
|
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result = execute("ip addr add %address%/%bnmask%[[ broadcast %broadcast%]] "
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"dev %iface%[[ peer %pointopoint%]][[ label %label%]]", ifd, exec);
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result += execute("ip link set[[ mtu %mtu%]][[ addr %hwaddress%]] %iface% up", ifd, exec);
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result += execute("[[ip route add default via %gateway% dev %iface%[[ metric %metric%]]]]", ifd, exec);
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return ((result == 3) ? 3 : 0);
|
|
# else
|
|
/* ifconfig said to set iface up before it processes hw %hwaddress%,
|
|
* which then of course fails. Thus we run two separate ifconfig */
|
|
result = execute("ifconfig %iface%[[ hw %hwaddress%]][[ media %media%]][[ mtu %mtu%]] up",
|
|
ifd, exec);
|
|
result += execute("ifconfig %iface% %address% netmask %netmask%"
|
|
"[[ broadcast %broadcast%]][[ pointopoint %pointopoint%]] ",
|
|
ifd, exec);
|
|
result += execute("[[route add default gw %gateway%[[ metric %metric%]] %iface%]]", ifd, exec);
|
|
return ((result == 3) ? 3 : 0);
|
|
# endif
|
|
}
|
|
|
|
static int FAST_FUNC static_down(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
int result;
|
|
# if ENABLE_FEATURE_IFUPDOWN_IP
|
|
result = execute("ip addr flush dev %iface%", ifd, exec);
|
|
result += execute("ip link set %iface% down", ifd, exec);
|
|
# else
|
|
/* result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec); */
|
|
/* Bringing the interface down deletes the routes in itself.
|
|
Otherwise this fails if we reference 'gateway' when using this from dhcp_down */
|
|
result = 1;
|
|
result += execute("ifconfig %iface% down", ifd, exec);
|
|
# endif
|
|
return ((result == 2) ? 2 : 0);
|
|
}
|
|
|
|
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
|
|
struct dhcp_client_t {
|
|
const char *name;
|
|
const char *startcmd;
|
|
const char *stopcmd;
|
|
};
|
|
|
|
static const struct dhcp_client_t ext_dhcp_clients[] = {
|
|
{ "dhcpcd",
|
|
"dhcpcd[[ -h %hostname%]][[ -i %vendor%]][[ -I %client%]][[ -l %leasetime%]] %iface%",
|
|
"dhcpcd -k %iface%",
|
|
},
|
|
{ "dhclient",
|
|
"dhclient -pf /var/run/dhclient.%iface%.pid %iface%",
|
|
"kill -9 `cat /var/run/dhclient.%iface%.pid` 2>/dev/null",
|
|
},
|
|
{ "pump",
|
|
"pump -i %iface%[[ -h %hostname%]][[ -l %leasehours%]]",
|
|
"pump -i %iface% -k",
|
|
},
|
|
{ "udhcpc",
|
|
"udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid -i %iface%[[ -H %hostname%]][[ -c %client%]]"
|
|
"[[ -s %script%]][[ %udhcpc_opts%]]",
|
|
"kill `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null",
|
|
},
|
|
};
|
|
# endif /* FEATURE_IFUPDOWN_EXTERNAL_DHCPC */
|
|
|
|
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
|
|
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
unsigned i;
|
|
# if ENABLE_FEATURE_IFUPDOWN_IP
|
|
/* ip doesn't up iface when it configures it (unlike ifconfig) */
|
|
if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
|
|
return 0;
|
|
# else
|
|
/* needed if we have hwaddress on dhcp iface */
|
|
if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
|
|
return 0;
|
|
# endif
|
|
for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) {
|
|
if (executable_exists(ext_dhcp_clients[i].name))
|
|
return execute(ext_dhcp_clients[i].startcmd, ifd, exec);
|
|
}
|
|
bb_error_msg("no dhcp clients found");
|
|
return 0;
|
|
}
|
|
# elif ENABLE_UDHCPC
|
|
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
# if ENABLE_FEATURE_IFUPDOWN_IP
|
|
/* ip doesn't up iface when it configures it (unlike ifconfig) */
|
|
if (!execute("ip link set[[ addr %hwaddress%]] %iface% up", ifd, exec))
|
|
return 0;
|
|
# else
|
|
/* needed if we have hwaddress on dhcp iface */
|
|
if (!execute("ifconfig %iface%[[ hw %hwaddress%]] up", ifd, exec))
|
|
return 0;
|
|
# endif
|
|
return execute("udhcpc " UDHCPC_CMD_OPTIONS " -p /var/run/udhcpc.%iface%.pid "
|
|
"-i %iface%[[ -H %hostname%]][[ -c %client%]][[ -s %script%]][[ %udhcpc_opts%]]",
|
|
ifd, exec);
|
|
}
|
|
# else
|
|
static int FAST_FUNC dhcp_up(struct interface_defn_t *ifd UNUSED_PARAM,
|
|
execfn *exec UNUSED_PARAM)
|
|
{
|
|
return 0; /* no dhcp support */
|
|
}
|
|
# endif
|
|
|
|
# if ENABLE_FEATURE_IFUPDOWN_EXTERNAL_DHCP
|
|
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
int result = 0;
|
|
unsigned i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ext_dhcp_clients); i++) {
|
|
if (executable_exists(ext_dhcp_clients[i].name)) {
|
|
result = execute(ext_dhcp_clients[i].stopcmd, ifd, exec);
|
|
if (result)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!result)
|
|
bb_error_msg("warning: no dhcp clients found and stopped");
|
|
|
|
/* Sleep a bit, otherwise static_down tries to bring down interface too soon,
|
|
and it may come back up because udhcpc is still shutting down */
|
|
usleep(100000);
|
|
result += static_down(ifd, exec);
|
|
return ((result == 3) ? 3 : 0);
|
|
}
|
|
# elif ENABLE_UDHCPC
|
|
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
int result;
|
|
result = execute(
|
|
"test -f /var/run/udhcpc.%iface%.pid && "
|
|
"kill `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null",
|
|
ifd, exec);
|
|
/* Also bring the hardware interface down since
|
|
killing the dhcp client alone doesn't do it.
|
|
This enables consecutive ifup->ifdown->ifup */
|
|
/* Sleep a bit, otherwise static_down tries to bring down interface too soon,
|
|
and it may come back up because udhcpc is still shutting down */
|
|
usleep(100000);
|
|
result += static_down(ifd, exec);
|
|
return ((result == 3) ? 3 : 0);
|
|
}
|
|
# else
|
|
static int FAST_FUNC dhcp_down(struct interface_defn_t *ifd UNUSED_PARAM,
|
|
execfn *exec UNUSED_PARAM)
|
|
{
|
|
return 0; /* no dhcp support */
|
|
}
|
|
# endif
|
|
|
|
static int FAST_FUNC manual_up_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int FAST_FUNC bootp_up(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
return execute("bootpc[[ --bootfile %bootfile%]] --dev %iface%"
|
|
"[[ --server %server%]][[ --hwaddr %hwaddr%]]"
|
|
" --returniffail --serverbcast", ifd, exec);
|
|
}
|
|
|
|
static int FAST_FUNC ppp_up(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
return execute("pon[[ %provider%]]", ifd, exec);
|
|
}
|
|
|
|
static int FAST_FUNC ppp_down(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
return execute("poff[[ %provider%]]", ifd, exec);
|
|
}
|
|
|
|
static int FAST_FUNC wvdial_up(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
return execute("start-stop-daemon --start -x wvdial "
|
|
"-p /var/run/wvdial.%iface% -b -m --[[ %provider%]]", ifd, exec);
|
|
}
|
|
|
|
static int FAST_FUNC wvdial_down(struct interface_defn_t *ifd, execfn *exec)
|
|
{
|
|
return execute("start-stop-daemon --stop -x wvdial "
|
|
"-p /var/run/wvdial.%iface% -s 2", ifd, exec);
|
|
}
|
|
|
|
static const struct method_t methods[] = {
|
|
{ "manual" , manual_up_down, manual_up_down, },
|
|
{ "wvdial" , wvdial_up , wvdial_down , },
|
|
{ "ppp" , ppp_up , ppp_down , },
|
|
{ "static" , static_up , static_down , },
|
|
{ "bootp" , bootp_up , static_down , },
|
|
{ "dhcp" , dhcp_up , dhcp_down , },
|
|
{ "loopback", loopback_up , loopback_down , },
|
|
};
|
|
|
|
static const struct address_family_t addr_inet = {
|
|
"inet",
|
|
ARRAY_SIZE(methods),
|
|
methods
|
|
};
|
|
|
|
#endif /* FEATURE_IFUPDOWN_IPV4 */
|
|
|
|
static int FAST_FUNC link_up_down(struct interface_defn_t *ifd UNUSED_PARAM, execfn *exec UNUSED_PARAM)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static const struct method_t link_methods[] = {
|
|
{ "none", link_up_down, link_up_down }
|
|
};
|
|
|
|
static const struct address_family_t addr_link = {
|
|
"link", ARRAY_SIZE(link_methods), link_methods
|
|
};
|
|
|
|
/* Returns pointer to the next word, or NULL.
|
|
* In 1st case, advances *buf to the word after this one.
|
|
*/
|
|
static char *next_word(char **buf)
|
|
{
|
|
unsigned length;
|
|
char *word;
|
|
|
|
/* Skip over leading whitespace */
|
|
word = skip_whitespace(*buf);
|
|
|
|
/* Stop on EOL */
|
|
if (*word == '\0')
|
|
return NULL;
|
|
|
|
/* Find the length of this word (can't be 0) */
|
|
length = strcspn(word, " \t\n");
|
|
|
|
/* Unless we are already at NUL, store NUL and advance */
|
|
if (word[length] != '\0')
|
|
word[length++] = '\0';
|
|
|
|
*buf = skip_whitespace(word + length);
|
|
|
|
return word;
|
|
}
|
|
|
|
static const struct address_family_t *get_address_family(const struct address_family_t *const af[], char *name)
|
|
{
|
|
int i;
|
|
|
|
if (!name)
|
|
return NULL;
|
|
|
|
for (i = 0; af[i]; i++) {
|
|
if (strcmp(af[i]->name, name) == 0) {
|
|
return af[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const struct method_t *get_method(const struct address_family_t *af, char *name)
|
|
{
|
|
int i;
|
|
|
|
if (!name)
|
|
return NULL;
|
|
/* TODO: use index_in_str_array() */
|
|
for (i = 0; i < af->n_methods; i++) {
|
|
if (strcmp(af->method[i].name, name) == 0) {
|
|
return &af->method[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct interfaces_file_t *read_interfaces(const char *filename, struct interfaces_file_t *defn)
|
|
{
|
|
/* Let's try to be compatible.
|
|
*
|
|
* "man 5 interfaces" says:
|
|
* Lines starting with "#" are ignored. Note that end-of-line
|
|
* comments are NOT supported, comments must be on a line of their own.
|
|
* A line may be extended across multiple lines by making
|
|
* the last character a backslash.
|
|
*
|
|
* Seen elsewhere in example config file:
|
|
* A first non-blank "#" character makes the rest of the line
|
|
* be ignored. Blank lines are ignored. Lines may be indented freely.
|
|
* A "\" character at the very end of the line indicates the next line
|
|
* should be treated as a continuation of the current one.
|
|
*
|
|
* Lines beginning with "source" are used to include stanzas from
|
|
* other files, so configuration can be split into many files.
|
|
* The word "source" is followed by the path of file to be sourced.
|
|
*/
|
|
#if ENABLE_FEATURE_IFUPDOWN_MAPPING
|
|
struct mapping_defn_t *currmap = NULL;
|
|
#endif
|
|
struct interface_defn_t *currif = NULL;
|
|
FILE *f;
|
|
char *buf;
|
|
char *first_word;
|
|
char *rest_of_line;
|
|
enum { NONE, IFACE, MAPPING } currently_processing = NONE;
|
|
|
|
if (!defn)
|
|
defn = xzalloc(sizeof(*defn));
|
|
|
|
debug_noise("reading %s file:\n", filename);
|
|
f = xfopen_for_read(filename);
|
|
|
|
while ((buf = xmalloc_fgetline(f)) != NULL) {
|
|
#if ENABLE_DESKTOP
|
|
/* Trailing "\" concatenates lines */
|
|
char *p;
|
|
while ((p = last_char_is(buf, '\\')) != NULL) {
|
|
*p = '\0';
|
|
rest_of_line = xmalloc_fgetline(f);
|
|
if (!rest_of_line)
|
|
break;
|
|
p = xasprintf("%s%s", buf, rest_of_line);
|
|
free(buf);
|
|
free(rest_of_line);
|
|
buf = p;
|
|
}
|
|
#endif
|
|
rest_of_line = buf;
|
|
first_word = next_word(&rest_of_line);
|
|
if (!first_word || *first_word == '#') {
|
|
free(buf);
|
|
continue; /* blank/comment line */
|
|
}
|
|
|
|
if (strcmp(first_word, "mapping") == 0) {
|
|
#if ENABLE_FEATURE_IFUPDOWN_MAPPING
|
|
currmap = xzalloc(sizeof(*currmap));
|
|
|
|
while ((first_word = next_word(&rest_of_line)) != NULL) {
|
|
currmap->match = xrealloc_vector(currmap->match, 4, currmap->n_matches);
|
|
currmap->match[currmap->n_matches++] = xstrdup(first_word);
|
|
}
|
|
/*currmap->n_mappings = 0;*/
|
|
/*currmap->mapping = NULL;*/
|
|
/*currmap->script = NULL;*/
|
|
{
|
|
struct mapping_defn_t **where = &defn->mappings;
|
|
while (*where != NULL) {
|
|
where = &(*where)->next;
|
|
}
|
|
*where = currmap;
|
|
/*currmap->next = NULL;*/
|
|
}
|
|
debug_noise("Added mapping\n");
|
|
#endif
|
|
currently_processing = MAPPING;
|
|
} else if (strcmp(first_word, "iface") == 0) {
|
|
static const struct address_family_t *const addr_fams[] = {
|
|
#if ENABLE_FEATURE_IFUPDOWN_IPV4
|
|
&addr_inet,
|
|
#endif
|
|
#if ENABLE_FEATURE_IFUPDOWN_IPV6
|
|
&addr_inet6,
|
|
#endif
|
|
&addr_link,
|
|
NULL
|
|
};
|
|
char *iface_name;
|
|
char *address_family_name;
|
|
char *method_name;
|
|
llist_t *iface_list;
|
|
|
|
currif = xzalloc(sizeof(*currif));
|
|
iface_name = next_word(&rest_of_line);
|
|
address_family_name = next_word(&rest_of_line);
|
|
method_name = next_word(&rest_of_line);
|
|
|
|
if (method_name == NULL)
|
|
bb_error_msg_and_die("too few parameters for line \"%s\"", buf);
|
|
|
|
/* ship any trailing whitespace */
|
|
rest_of_line = skip_whitespace(rest_of_line);
|
|
|
|
if (rest_of_line[0] != '\0' /* && rest_of_line[0] != '#' */)
|
|
bb_error_msg_and_die("too many parameters \"%s\"", buf);
|
|
|
|
currif->iface = xstrdup(iface_name);
|
|
|
|
currif->address_family = get_address_family(addr_fams, address_family_name);
|
|
if (!currif->address_family)
|
|
bb_error_msg_and_die("unknown address type \"%s\"", address_family_name);
|
|
|
|
currif->method = get_method(currif->address_family, method_name);
|
|
if (!currif->method)
|
|
bb_error_msg_and_die("unknown method \"%s\"", method_name);
|
|
|
|
for (iface_list = defn->ifaces; iface_list; iface_list = iface_list->link) {
|
|
struct interface_defn_t *tmp = (struct interface_defn_t *) iface_list->data;
|
|
if ((strcmp(tmp->iface, currif->iface) == 0)
|
|
&& (tmp->address_family == currif->address_family)
|
|
) {
|
|
bb_error_msg_and_die("duplicate interface \"%s\"", tmp->iface);
|
|
}
|
|
}
|
|
llist_add_to_end(&(defn->ifaces), (char*)currif);
|
|
|
|
debug_noise("iface %s %s %s\n", currif->iface, address_family_name, method_name);
|
|
currently_processing = IFACE;
|
|
} else if (strcmp(first_word, "auto") == 0) {
|
|
while ((first_word = next_word(&rest_of_line)) != NULL) {
|
|
|
|
/* Check the interface isnt already listed */
|
|
if (llist_find_str(defn->autointerfaces, first_word)) {
|
|
bb_perror_msg_and_die("interface declared auto twice \"%s\"", buf);
|
|
}
|
|
|
|
/* Add the interface to the list */
|
|
llist_add_to_end(&(defn->autointerfaces), xstrdup(first_word));
|
|
debug_noise("\nauto %s\n", first_word);
|
|
}
|
|
currently_processing = NONE;
|
|
} else if (strcmp(first_word, "source") == 0) {
|
|
read_interfaces(next_word(&rest_of_line), defn);
|
|
} else {
|
|
switch (currently_processing) {
|
|
case IFACE:
|
|
if (rest_of_line[0] == '\0')
|
|
bb_error_msg_and_die("option with empty value \"%s\"", buf);
|
|
|
|
if (strcmp(first_word, "post-up") == 0)
|
|
first_word += 5; /* "up" */
|
|
else if (strcmp(first_word, "pre-down") == 0)
|
|
first_word += 4; /* "down" */
|
|
|
|
/* If not one of "up", "down",... words... */
|
|
if (index_in_strings(keywords_up_down, first_word) < 0) {
|
|
int i;
|
|
for (i = 0; i < currif->n_options; i++) {
|
|
if (strcmp(currif->option[i].name, first_word) == 0)
|
|
bb_error_msg_and_die("duplicate option \"%s\"", buf);
|
|
}
|
|
}
|
|
debug_noise("\t%s=%s\n", first_word, rest_of_line);
|
|
currif->option = xrealloc_vector(currif->option, 4, currif->n_options);
|
|
currif->option[currif->n_options].name = xstrdup(first_word);
|
|
currif->option[currif->n_options].value = xstrdup(rest_of_line);
|
|
currif->n_options++;
|
|
break;
|
|
case MAPPING:
|
|
#if ENABLE_FEATURE_IFUPDOWN_MAPPING
|
|
if (strcmp(first_word, "script") == 0) {
|
|
if (currmap->script != NULL)
|
|
bb_error_msg_and_die("duplicate script in mapping \"%s\"", buf);
|
|
currmap->script = xstrdup(next_word(&rest_of_line));
|
|
} else if (strcmp(first_word, "map") == 0) {
|
|
currmap->mapping = xrealloc_vector(currmap->mapping, 2, currmap->n_mappings);
|
|
currmap->mapping[currmap->n_mappings] = xstrdup(next_word(&rest_of_line));
|
|
currmap->n_mappings++;
|
|
} else {
|
|
bb_error_msg_and_die("misplaced option \"%s\"", buf);
|
|
}
|
|
#endif
|
|
break;
|
|
case NONE:
|
|
default:
|
|
bb_error_msg_and_die("misplaced option \"%s\"", buf);
|
|
}
|
|
}
|
|
free(buf);
|
|
} /* while (fgets) */
|
|
|
|
if (ferror(f) != 0) {
|
|
/* ferror does NOT set errno! */
|
|
bb_error_msg_and_die("%s: I/O error", filename);
|
|
}
|
|
fclose(f);
|
|
debug_noise("\ndone reading %s\n\n", filename);
|
|
|
|
return defn;
|
|
}
|
|
|
|
static char *setlocalenv(const char *format, const char *name, const char *value)
|
|
{
|
|
char *result;
|
|
char *dst;
|
|
char *src;
|
|
char c;
|
|
|
|
result = xasprintf(format, name, value);
|
|
|
|
for (dst = src = result; (c = *src) != '=' && c; src++) {
|
|
if (c == '-')
|
|
c = '_';
|
|
if (c >= 'a' && c <= 'z')
|
|
c -= ('a' - 'A');
|
|
if (isalnum(c) || c == '_')
|
|
*dst++ = c;
|
|
}
|
|
overlapping_strcpy(dst, src);
|
|
|
|
return result;
|
|
}
|
|
|
|
static void set_environ(struct interface_defn_t *iface, const char *mode, const char *opt)
|
|
{
|
|
int i;
|
|
char **pp;
|
|
|
|
if (G.my_environ != NULL) {
|
|
for (pp = G.my_environ; *pp; pp++) {
|
|
free(*pp);
|
|
}
|
|
free(G.my_environ);
|
|
}
|
|
|
|
/* note: last element will stay NULL: */
|
|
G.my_environ = xzalloc(sizeof(char *) * (iface->n_options + 7));
|
|
pp = G.my_environ;
|
|
|
|
for (i = 0; i < iface->n_options; i++) {
|
|
if (index_in_strings(keywords_up_down, iface->option[i].name) >= 0) {
|
|
continue;
|
|
}
|
|
*pp++ = setlocalenv("IF_%s=%s", iface->option[i].name, iface->option[i].value);
|
|
}
|
|
|
|
*pp++ = setlocalenv("%s=%s", "IFACE", iface->iface);
|
|
*pp++ = setlocalenv("%s=%s", "ADDRFAM", iface->address_family->name);
|
|
*pp++ = setlocalenv("%s=%s", "METHOD", iface->method->name);
|
|
*pp++ = setlocalenv("%s=%s", "MODE", mode);
|
|
*pp++ = setlocalenv("%s=%s", "PHASE", opt);
|
|
if (G.startup_PATH)
|
|
*pp++ = setlocalenv("%s=%s", "PATH", G.startup_PATH);
|
|
}
|
|
|
|
static int doit(char *str)
|
|
{
|
|
if (option_mask32 & (OPT_no_act|OPT_verbose)) {
|
|
puts(str);
|
|
}
|
|
if (!(option_mask32 & OPT_no_act)) {
|
|
pid_t child;
|
|
int status;
|
|
|
|
fflush_all();
|
|
child = vfork();
|
|
if (child < 0) /* failure */
|
|
return 0;
|
|
if (child == 0) { /* child */
|
|
execle(G.shell, G.shell, "-c", str, (char *) NULL, G.my_environ);
|
|
_exit(127);
|
|
}
|
|
safe_waitpid(child, &status, 0);
|
|
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int execute_all(struct interface_defn_t *ifd, const char *opt)
|
|
{
|
|
int i;
|
|
char *buf;
|
|
for (i = 0; i < ifd->n_options; i++) {
|
|
if (strcmp(ifd->option[i].name, opt) == 0) {
|
|
if (!doit(ifd->option[i].value)) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
buf = xasprintf("run-parts /etc/network/if-%s.d", opt);
|
|
/* heh, we don't bother free'ing it */
|
|
return doit(buf);
|
|
}
|
|
|
|
static int check(char *str)
|
|
{
|
|
return str != NULL;
|
|
}
|
|
|
|
static int iface_up(struct interface_defn_t *iface)
|
|
{
|
|
if (!iface->method->up(iface, check)) return -1;
|
|
set_environ(iface, "start", "pre-up");
|
|
if (!execute_all(iface, "pre-up")) return 0;
|
|
if (!iface->method->up(iface, doit)) return 0;
|
|
set_environ(iface, "start", "post-up");
|
|
if (!execute_all(iface, "up")) return 0;
|
|
return 1;
|
|
}
|
|
|
|
static int iface_down(struct interface_defn_t *iface)
|
|
{
|
|
if (!iface->method->down(iface, check)) return -1;
|
|
set_environ(iface, "stop", "pre-down");
|
|
if (!execute_all(iface, "down")) return 0;
|
|
if (!iface->method->down(iface, doit)) return 0;
|
|
set_environ(iface, "stop", "post-down");
|
|
if (!execute_all(iface, "post-down")) return 0;
|
|
return 1;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_IFUPDOWN_MAPPING
|
|
static int popen2(FILE **in, FILE **out, char *command, char *param)
|
|
{
|
|
char *argv[3] = { command, param, NULL };
|
|
struct fd_pair infd, outfd;
|
|
pid_t pid;
|
|
|
|
xpiped_pair(infd);
|
|
xpiped_pair(outfd);
|
|
|
|
fflush_all();
|
|
pid = xvfork();
|
|
|
|
if (pid == 0) {
|
|
/* Child */
|
|
/* NB: close _first_, then move fds! */
|
|
close(infd.wr);
|
|
close(outfd.rd);
|
|
xmove_fd(infd.rd, 0);
|
|
xmove_fd(outfd.wr, 1);
|
|
BB_EXECVP_or_die(argv);
|
|
}
|
|
/* parent */
|
|
close(infd.rd);
|
|
close(outfd.wr);
|
|
*in = xfdopen_for_write(infd.wr);
|
|
*out = xfdopen_for_read(outfd.rd);
|
|
return pid;
|
|
}
|
|
|
|
static char *run_mapping(char *physical, struct mapping_defn_t *map)
|
|
{
|
|
FILE *in, *out;
|
|
int i, status;
|
|
pid_t pid;
|
|
|
|
char *logical = xstrdup(physical);
|
|
|
|
/* Run the mapping script. Never fails. */
|
|
pid = popen2(&in, &out, map->script, physical);
|
|
|
|
/* Write mappings to stdin of mapping script. */
|
|
for (i = 0; i < map->n_mappings; i++) {
|
|
fprintf(in, "%s\n", map->mapping[i]);
|
|
}
|
|
fclose(in);
|
|
safe_waitpid(pid, &status, 0);
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
|
|
/* If the mapping script exited successfully, try to
|
|
* grab a line of output and use that as the name of the
|
|
* logical interface. */
|
|
char *new_logical = xmalloc_fgetline(out);
|
|
|
|
if (new_logical) {
|
|
/* If we are able to read a line of output from the script,
|
|
* remove any trailing whitespace and use this value
|
|
* as the name of the logical interface. */
|
|
char *pch = new_logical + strlen(new_logical) - 1;
|
|
|
|
while (pch >= new_logical && isspace(*pch))
|
|
*(pch--) = '\0';
|
|
|
|
free(logical);
|
|
logical = new_logical;
|
|
}
|
|
}
|
|
|
|
fclose(out);
|
|
|
|
return logical;
|
|
}
|
|
#endif /* FEATURE_IFUPDOWN_MAPPING */
|
|
|
|
static llist_t *find_iface_state(llist_t *state_list, const char *iface)
|
|
{
|
|
llist_t *search = state_list;
|
|
|
|
while (search) {
|
|
char *after_iface = is_prefixed_with(search->data, iface);
|
|
if (after_iface
|
|
&& *after_iface == '='
|
|
) {
|
|
return search;
|
|
}
|
|
search = search->link;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* read the previous state from the state file */
|
|
static llist_t *read_iface_state(void)
|
|
{
|
|
llist_t *state_list = NULL;
|
|
FILE *state_fp = fopen_for_read(CONFIG_IFUPDOWN_IFSTATE_PATH);
|
|
|
|
if (state_fp) {
|
|
char *start, *end_ptr;
|
|
while ((start = xmalloc_fgets(state_fp)) != NULL) {
|
|
/* We should only need to check for a single character */
|
|
end_ptr = start + strcspn(start, " \t\n");
|
|
*end_ptr = '\0';
|
|
llist_add_to(&state_list, start);
|
|
}
|
|
fclose(state_fp);
|
|
}
|
|
return state_list;
|
|
}
|
|
|
|
|
|
int ifupdown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int ifupdown_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
int (*cmds)(struct interface_defn_t *);
|
|
struct interfaces_file_t *defn;
|
|
llist_t *target_list = NULL;
|
|
const char *interfaces = "/etc/network/interfaces";
|
|
bool any_failures = 0;
|
|
|
|
INIT_G();
|
|
|
|
G.startup_PATH = getenv("PATH");
|
|
G.shell = xstrdup(get_shell_name());
|
|
|
|
cmds = iface_down;
|
|
if (applet_name[2] == 'u') {
|
|
/* ifup command */
|
|
cmds = iface_up;
|
|
}
|
|
|
|
getopt32(argv, OPTION_STR, &interfaces);
|
|
argv += optind;
|
|
if (argv[0]) {
|
|
if (DO_ALL) bb_show_usage();
|
|
} else {
|
|
if (!DO_ALL) bb_show_usage();
|
|
}
|
|
|
|
defn = read_interfaces(interfaces, NULL);
|
|
|
|
/* Create a list of interfaces to work on */
|
|
if (DO_ALL) {
|
|
target_list = defn->autointerfaces;
|
|
} else {
|
|
llist_add_to_end(&target_list, argv[0]);
|
|
}
|
|
|
|
/* Update the interfaces */
|
|
while (target_list) {
|
|
llist_t *iface_list;
|
|
struct interface_defn_t *currif;
|
|
char *iface;
|
|
char *liface;
|
|
char *pch;
|
|
bool okay = 0;
|
|
int cmds_ret;
|
|
bool curr_failure = 0;
|
|
|
|
iface = xstrdup(target_list->data);
|
|
target_list = target_list->link;
|
|
|
|
pch = strchr(iface, '=');
|
|
if (pch) {
|
|
*pch = '\0';
|
|
liface = xstrdup(pch + 1);
|
|
} else {
|
|
liface = xstrdup(iface);
|
|
}
|
|
|
|
if (!FORCE) {
|
|
llist_t *state_list = read_iface_state();
|
|
const llist_t *iface_state = find_iface_state(state_list, iface);
|
|
|
|
if (cmds == iface_up) {
|
|
/* ifup */
|
|
if (iface_state) {
|
|
bb_error_msg("interface %s already configured", iface);
|
|
goto next;
|
|
}
|
|
} else {
|
|
/* ifdown */
|
|
if (!iface_state) {
|
|
bb_error_msg("interface %s not configured", iface);
|
|
goto next;
|
|
}
|
|
}
|
|
llist_free(state_list, free);
|
|
}
|
|
|
|
#if ENABLE_FEATURE_IFUPDOWN_MAPPING
|
|
if ((cmds == iface_up) && !NO_MAPPINGS) {
|
|
struct mapping_defn_t *currmap;
|
|
|
|
for (currmap = defn->mappings; currmap; currmap = currmap->next) {
|
|
int i;
|
|
for (i = 0; i < currmap->n_matches; i++) {
|
|
if (fnmatch(currmap->match[i], liface, 0) != 0)
|
|
continue;
|
|
if (VERBOSE) {
|
|
printf("Running mapping script %s on %s\n", currmap->script, liface);
|
|
}
|
|
liface = run_mapping(iface, currmap);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
iface_list = defn->ifaces;
|
|
while (iface_list) {
|
|
currif = (struct interface_defn_t *) iface_list->data;
|
|
if (strcmp(liface, currif->iface) == 0) {
|
|
char *oldiface = currif->iface;
|
|
|
|
okay = 1;
|
|
currif->iface = iface;
|
|
|
|
debug_noise("\nConfiguring interface %s (%s)\n", liface, currif->address_family->name);
|
|
|
|
/* Call the cmds function pointer, does either iface_up() or iface_down() */
|
|
cmds_ret = cmds(currif);
|
|
if (cmds_ret == -1) {
|
|
bb_error_msg("don't have all variables for %s/%s",
|
|
liface, currif->address_family->name);
|
|
any_failures = curr_failure = 1;
|
|
} else if (cmds_ret == 0) {
|
|
any_failures = curr_failure = 1;
|
|
}
|
|
|
|
currif->iface = oldiface;
|
|
}
|
|
iface_list = iface_list->link;
|
|
}
|
|
if (VERBOSE) {
|
|
bb_putchar('\n');
|
|
}
|
|
|
|
if (!okay && !FORCE) {
|
|
bb_error_msg("ignoring unknown interface %s", liface);
|
|
any_failures = 1;
|
|
} else if (!NO_ACT) {
|
|
/* update the state file */
|
|
FILE *state_fp;
|
|
llist_t *state;
|
|
llist_t *state_list = read_iface_state();
|
|
llist_t *iface_state = find_iface_state(state_list, iface);
|
|
|
|
if (cmds == iface_up && !curr_failure) {
|
|
char *newiface = xasprintf("%s=%s", iface, liface);
|
|
if (!iface_state) {
|
|
llist_add_to_end(&state_list, newiface);
|
|
} else {
|
|
free(iface_state->data);
|
|
iface_state->data = newiface;
|
|
}
|
|
} else {
|
|
/* Remove an interface from state_list */
|
|
llist_unlink(&state_list, iface_state);
|
|
free(llist_pop(&iface_state));
|
|
}
|
|
|
|
/* Actually write the new state */
|
|
state_fp = xfopen_for_write(CONFIG_IFUPDOWN_IFSTATE_PATH);
|
|
state = state_list;
|
|
while (state) {
|
|
if (state->data) {
|
|
fprintf(state_fp, "%s\n", state->data);
|
|
}
|
|
state = state->link;
|
|
}
|
|
fclose(state_fp);
|
|
llist_free(state_list, free);
|
|
}
|
|
next:
|
|
free(iface);
|
|
free(liface);
|
|
}
|
|
|
|
return any_failures;
|
|
}
|