+/* vi: set sw=4 ts=4: */
/*
* ifupdown for busybox
- * Copyright (c) 2002 Glenn McGrath <bug1@optushome.com.au>
+ * Copyright (c) 2002 Glenn McGrath <bug1@iinet.net.au>
+ * Copyright (c) 2003-2004 Erik Andersen <andersen@codepoet.org>
*
* Based on ifupdown v 0.6.4 by Anthony Towns
* Copyright (c) 1999 Anthony Towns <aj@azure.humbug.org.au>
* Lines in the interfaces file cannot wrap.
* To adhere to the FHS, the default state file is /var/run/ifstate.
*
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-#include <sys/stat.h>
+#include "busybox.h"
#include <sys/utsname.h>
-#include <sys/wait.h>
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
#include <fnmatch.h>
#include <getopt.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "libbb.h"
#define MAX_OPT_DEPTH 10
#define EUNBALBRACK 10001
#define EUNDEFVAR 10002
#define EUNBALPER 10000
-typedef struct interface_defn_s interface_defn_t;
+#if ENABLE_FEATURE_IFUPDOWN_MAPPING
+#define MAX_INTERFACE_LENGTH 10
+#endif
-typedef int (execfn)(char *command);
-typedef int (command_set)(interface_defn_t *ifd, execfn *e);
+#define debug_noise(args...) /*fprintf(stderr, args)*/
-typedef struct method_s {
+/* Forward declaration */
+struct interface_defn_t;
+
+typedef int execfn(char *command);
+
+struct method_t
+{
char *name;
- command_set *up;
- command_set *down;
-} method_t;
+ int (*up)(struct interface_defn_t *ifd, execfn *e);
+ int (*down)(struct interface_defn_t *ifd, execfn *e);
+};
-typedef struct address_family_s {
+struct address_family_t
+{
char *name;
int n_methods;
- method_t *method;
-} address_family_t;
+ const struct method_t *method;
+};
-typedef struct mapping_defn_s {
- struct mapping_defn_s *next;
+struct mapping_defn_t
+{
+ struct mapping_defn_t *next;
int max_matches;
int n_matches;
int max_mappings;
int n_mappings;
char **mapping;
-} mapping_defn_t;
+};
-typedef struct variable_s {
+struct variable_t
+{
char *name;
char *value;
-} variable_t;
+};
-struct interface_defn_s {
- struct interface_defn_s *next;
+struct interface_defn_t
+{
+ const struct address_family_t *address_family;
+ const struct method_t *method;
char *iface;
- address_family_t *address_family;
- method_t *method;
-
- int automatic;
-
int max_options;
int n_options;
- variable_t *option;
+ struct variable_t *option;
};
-typedef struct interfaces_file_s {
+struct interfaces_file_t
+{
llist_t *autointerfaces;
- interface_defn_t *ifaces;
- mapping_defn_t *mappings;
-} interfaces_file_t;
+ llist_t *ifaces;
+ struct mapping_defn_t *mappings;
+};
+
+#define OPTION_STR "anvf" USE_FEATURE_IFUPDOWN_MAPPING("m") "i:"
+enum {
+ OPT_do_all = 0x1,
+ OPT_no_act = 0x2,
+ OPT_verbose = 0x4,
+ OPT_force = 0x8,
+ OPT_no_mappings = 0x10,
+};
+#define DO_ALL (option_mask32 & OPT_do_all)
+#define NO_ACT (option_mask32 & OPT_no_act)
+#define VERBOSE (option_mask32 & OPT_verbose)
+#define FORCE (option_mask32 & OPT_force)
+#define NO_MAPPINGS (option_mask32 & OPT_no_mappings)
+
+static char **my_environ;
+
+static char *startup_PATH;
+
+#if ENABLE_FEATURE_IFUPDOWN_IPV4 || ENABLE_FEATURE_IFUPDOWN_IPV6
-static char no_act = 0;
-static char verbose = 0;
-static char **environ = NULL;
+#if ENABLE_FEATURE_IFUPDOWN_IP
+
+static unsigned count_bits(unsigned a)
+{
+ unsigned result;
+ result = (a & 0x55) + ((a >> 1) & 0x55);
+ result = (result & 0x33) + ((result >> 2) & 0x33);
+ return (result & 0x0F) + ((result >> 4) & 0x0F);
+}
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
static int count_netmask_bits(char *dotted_quad)
{
- unsigned int a, b, c, d;
- unsigned int res, result;
+ unsigned result, a, b, c, d;
/* Found a netmask... Check if it is dotted quad */
if (sscanf(dotted_quad, "%u.%u.%u.%u", &a, &b, &c, &d) != 4)
return -1;
- res = (a & 0x55) + ((a >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- result = (res & 0x0F) + ((res >> 4) & 0x0F);
-
- res = (b & 0x55) + ((b >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- result += (res & 0x0F) + ((res >> 4) & 0x0F);
-
- res = (c & 0x55) + ((c >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- result += (res & 0x0F) + ((res >> 4) & 0x0F);
-
- res = (d & 0x55) + ((d >> 1) & 0x55);
- res = (res & 0x33) + ((res >> 2) & 0x33);
- result += (res & 0x0F) + ((res >> 4) & 0x0F);
- return ((int)result);
+ // FIXME: will be confused by e.g. 255.0.255.0
+ result = count_bits(a);
+ result += count_bits(b);
+ result += count_bits(c);
+ result += count_bits(d);
+ return (int)result;
}
#endif
-static void addstr(char **buf, size_t *len, size_t *pos, char *str, size_t str_length)
+static void addstr(char **bufp, const char *str, size_t str_length)
{
- if (*pos + str_length >= *len) {
- char *newbuf;
-
- newbuf = xrealloc(*buf, *len * 2 + str_length + 1);
- *buf = newbuf;
- *len = *len * 2 + str_length + 1;
- }
-
- while (str_length-- >= 1) {
- (*buf)[(*pos)++] = *str;
- str++;
- }
- (*buf)[*pos] = '\0';
+ /* xasprintf trick will be smaller, but we are often
+ * called with str_length == 1 - don't want to have
+ * THAT much of malloc/freeing! */
+ char *buf = *bufp;
+ int len = (buf ? strlen(buf) : 0);
+ str_length++;
+ buf = xrealloc(buf, len + str_length);
+ /* copies at most str_length-1 chars! */
+ safe_strncpy(buf + len, str, str_length);
+ *bufp = buf;
}
-static int strncmpz(char *l, char *r, size_t llen)
+static int strncmpz(const char *l, const char *r, size_t llen)
{
int i = strncmp(l, r, llen);
- if (i == 0) {
- return(-r[llen]);
- } else {
- return(i);
- }
+ if (i == 0)
+ return -r[llen];
+ return i;
}
-static char *get_var(char *id, size_t idlen, interface_defn_t *ifd)
+static char *get_var(const char *id, size_t idlen, struct interface_defn_t *ifd)
{
int i;
if (strncmpz(id, "iface", idlen) == 0) {
- return (ifd->iface);
- } else {
- for (i = 0; i < ifd->n_options; i++) {
- if (strncmpz(id, ifd->option[i].name, idlen) == 0) {
- return (ifd->option[i].value);
- }
+ char *result;
+ static char label_buf[20];
+ safe_strncpy(label_buf, ifd->iface, sizeof(label_buf));
+ result = strchr(label_buf, ':');
+ if (result) {
+ *result = '\0';
}
+ return label_buf;
}
-
- return(NULL);
+ if (strncmpz(id, "label", idlen) == 0) {
+ return ifd->iface;
+ }
+ for (i = 0; i < ifd->n_options; i++) {
+ if (strncmpz(id, ifd->option[i].name, idlen) == 0) {
+ return ifd->option[i].value;
+ }
+ }
+ return NULL;
}
-static char *parse(char *command, interface_defn_t *ifd)
+static char *parse(const char *command, struct interface_defn_t *ifd)
{
-
- char *result = NULL;
- size_t pos = 0, len = 0;
size_t old_pos[MAX_OPT_DEPTH] = { 0 };
int okay[MAX_OPT_DEPTH] = { 1 };
int opt_depth = 1;
+ char *result = NULL;
while (*command) {
switch (*command) {
-
default:
- addstr(&result, &len, &pos, command, 1);
+ addstr(&result, command, 1);
command++;
break;
case '\\':
if (command[1]) {
- addstr(&result, &len, &pos, command + 1, 1);
+ addstr(&result, command + 1, 1);
command += 2;
} else {
- addstr(&result, &len, &pos, command, 1);
+ addstr(&result, command, 1);
command++;
}
break;
case '[':
if (command[1] == '[' && opt_depth < MAX_OPT_DEPTH) {
- old_pos[opt_depth] = pos;
+ old_pos[opt_depth] = result ? strlen(result) : 0;
okay[opt_depth] = 1;
opt_depth++;
command += 2;
} else {
- addstr(&result, &len, &pos, "[", 1);
+ addstr(&result, "[", 1);
command++;
}
break;
if (command[1] == ']' && opt_depth > 1) {
opt_depth--;
if (!okay[opt_depth]) {
- pos = old_pos[opt_depth];
- result[pos] = '\0';
+ result[old_pos[opt_depth]] = '\0';
}
command += 2;
} else {
- addstr(&result, &len, &pos, "]", 1);
+ addstr(&result, "]", 1);
command++;
}
break;
case '%':
- {
- char *nextpercent;
- char *varvalue;
+ {
+ char *nextpercent;
+ char *varvalue;
- command++;
- nextpercent = strchr(command, '%');
- if (!nextpercent) {
- errno = EUNBALPER;
- free(result);
- return (NULL);
- }
+ command++;
+ nextpercent = strchr(command, '%');
+ if (!nextpercent) {
+ errno = EUNBALPER;
+ free(result);
+ return NULL;
+ }
- varvalue = get_var(command, nextpercent - command, ifd);
+ varvalue = get_var(command, nextpercent - command, ifd);
- if (varvalue) {
- addstr(&result, &len, &pos, varvalue, xstrlen(varvalue));
- } else {
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- /* Sigh... Add a special case for 'ip' to convert from
- * dotted quad to bit count style netmasks. */
- if (strncmp(command, "bnmask", 6)==0) {
- int res;
- varvalue = get_var("netmask", 7, ifd);
- if (varvalue && (res=count_netmask_bits(varvalue)) > 0) {
- char argument[255];
- sprintf(argument, "%d", res);
- addstr(&result, &len, &pos, argument, xstrlen(argument));
- command = nextpercent + 1;
- break;
+ if (varvalue) {
+ addstr(&result, varvalue, strlen(varvalue));
+ } else {
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ /* Sigh... Add a special case for 'ip' to convert from
+ * dotted quad to bit count style netmasks. */
+ if (strncmp(command, "bnmask", 6) == 0) {
+ unsigned res;
+ varvalue = get_var("netmask", 7, ifd);
+ if (varvalue && (res = count_netmask_bits(varvalue)) > 0) {
+ const char *argument = utoa(res);
+ addstr(&result, argument, strlen(argument));
+ command = nextpercent + 1;
+ break;
+ }
}
- }
#endif
- okay[opt_depth - 1] = 0;
- }
+ okay[opt_depth - 1] = 0;
+ }
- command = nextpercent + 1;
- }
+ command = nextpercent + 1;
+ }
break;
}
}
if (opt_depth > 1) {
errno = EUNBALBRACK;
free(result);
- return(NULL);
+ return NULL;
}
if (!okay[0]) {
errno = EUNDEFVAR;
free(result);
- return(NULL);
+ return NULL;
}
- return(result);
+ return result;
}
-static int execute(char *command, interface_defn_t *ifd, execfn *exec)
+/* execute() returns 1 for success and 0 for failure */
+static int execute(const char *command, struct interface_defn_t *ifd, execfn *exec)
{
char *out;
int ret;
out = parse(command, ifd);
if (!out) {
- return(0);
+ /* parse error? */
+ return 0;
}
-
- ret = (*exec) (out);
+ /* out == "": parsed ok but not all needed variables known, skip */
+ ret = out[0] ? (*exec)(out) : 1;
free(out);
- return(ret);
-}
-
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPX
-static int static_up_ipx(interface_defn_t *ifd, execfn *exec)
-{
- if (!execute("ipx_interface add %iface% %frame% %netnum%", ifd, exec)) {
- return(0);
- }
- return(1);
-}
-
-static int static_down_ipx(interface_defn_t *ifd, execfn *exec)
-{
- if (!execute("ipx_interface del %iface% %frame%", ifd, exec)) {
- return(0);
- }
- return(1);
-}
-
-static int dynamic_up(interface_defn_t *ifd, execfn *exec)
-{
- if (!execute("ipx_interface add %iface% %frame%", ifd, exec)) {
- return(0);
- }
- return(1);
-}
-
-static int dynamic_down(interface_defn_t *ifd, execfn *exec)
-{
- if (!execute("ipx_interface del %iface% %frame%", ifd, exec)) {
- return(0);
+ if (ret != 1) {
+ return 0;
}
- return(1);
+ return 1;
}
+#endif
-static method_t methods_ipx[] = {
- { "dynamic", dynamic_up, dynamic_down, },
- { "static", static_up_ipx, static_down_ipx, },
-};
-
-address_family_t addr_ipx = {
- "ipx",
- sizeof(methods_ipx) / sizeof(method_t),
- methods_ipx
-};
-#endif /* IFUP_FEATURE_IPX */
-
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPV6
-static int loopback_up6(interface_defn_t *ifd, execfn *exec)
+#if ENABLE_FEATURE_IFUPDOWN_IPV6
+static int loopback_up6(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% up", ifd, exec))
- return(0);
- if (!execute("ip addr add ::1 dev %iface%", ifd, exec))
- return(0);
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ int result;
+ result = execute("ip addr add ::1 dev %iface%", ifd, exec);
+ result += execute("ip link set %iface% up", ifd, exec);
+ return ((result == 2) ? 2 : 0);
#else
- if (!execute("ifconfig %iface% add ::1", ifd, exec))
- return(0);
+ return execute("ifconfig %iface% add ::1", ifd, exec);
#endif
- return(1);
}
-static int loopback_down6(interface_defn_t *ifd, execfn *exec)
+static int loopback_down6(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% down", ifd, exec))
- return(0);
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ return execute("ip link set %iface% down", ifd, exec);
#else
- if (!execute("ifconfig %iface% del ::1", ifd, exec))
- return(0);
+ return execute("ifconfig %iface% del ::1", ifd, exec);
#endif
- return(1);
}
-static int static_up6(interface_defn_t *ifd, execfn *exec)
+static int static_up6(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% up", ifd, exec))
- return(0);
- if (!execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec))
- return(0);
- if (!execute("[[ ip route add ::/0 via %gateway% ]]", ifd, exec))
- return(0);
+ int result;
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ result = execute("ip addr add %address%/%netmask% dev %iface%[[ label %label%]]", ifd, exec);
+ result += execute("ip link set[[ mtu %mtu%]][[ address %hwaddress%]] %iface% up", ifd, exec);
+ /* Was: "[[ ip ....%gateway% ]]". Removed extra spaces w/o checking */
+ result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec);
#else
- if (!execute("ifconfig %iface% [[media %media%]] [[hw %hwaddress%]] [[mtu %mtu%]] up", ifd, exec)) {
- return(0);
- }
- if (!execute("ifconfig %iface% add %address%/%netmask%", ifd, exec)) {
- return(0);
- }
- if (!execute("[[ route -A inet6 add ::/0 gw %gateway% ]]", ifd, exec)) {
- return(0);
- }
+ result = execute("ifconfig %iface%[[ media %media%]][[ hw %hwaddress%]][[ mtu %mtu%]] up", ifd, exec);
+ result += execute("ifconfig %iface% add %address%/%netmask%", ifd, exec);
+ result += execute("[[route -A inet6 add ::/0 gw %gateway%]]", ifd, exec);
#endif
- return(1);
+ return ((result == 3) ? 3 : 0);
}
-static int static_down6(interface_defn_t *ifd, execfn *exec)
+static int static_down6(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% down", ifd, exec))
- return(0);
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ return execute("ip link set %iface% down", ifd, exec);
#else
- if (!execute("ifconfig %iface% down", ifd, exec)) {
- return(0);
- }
+ return execute("ifconfig %iface% down", ifd, exec);
#endif
- return(1);
}
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
-static int v4tunnel_up(interface_defn_t *ifd, execfn *exec)
+#if ENABLE_FEATURE_IFUPDOWN_IP
+static int v4tunnel_up(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("ip tunnel add %iface% mode sit remote %endpoint% [[local %local%]] [[ttl %ttl%]]", ifd, exec)) {
- return(0);
- }
- if (!execute("ip link set %iface% up", ifd, exec)) {
- return(0);
- }
- if (!execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec)) {
- return(0);
- }
- if (!execute("[[ ip route add ::/0 via %gateway% ]]", ifd, exec)) {
- return(0);
- }
- return(1);
+ int result;
+ result = execute("ip tunnel add %iface% mode sit remote "
+ "%endpoint%[[ local %local%]][[ ttl %ttl%]]", ifd, exec);
+ result += execute("ip link set %iface% up", ifd, exec);
+ result += execute("ip addr add %address%/%netmask% dev %iface%", ifd, exec);
+ result += execute("[[ip route add ::/0 via %gateway%]]", ifd, exec);
+ return ((result == 4) ? 4 : 0);
}
-static int v4tunnel_down(interface_defn_t * ifd, execfn * exec)
+static int v4tunnel_down(struct interface_defn_t * ifd, execfn * exec)
{
- if (!execute("ip tunnel del %iface%", ifd, exec)) {
- return(0);
- }
- return(1);
+ return execute("ip tunnel del %iface%", ifd, exec);
}
#endif
-static method_t methods6[] = {
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
+static const struct method_t methods6[] = {
+#if ENABLE_FEATURE_IFUPDOWN_IP
{ "v4tunnel", v4tunnel_up, v4tunnel_down, },
#endif
{ "static", static_up6, static_down6, },
{ "loopback", loopback_up6, loopback_down6, },
};
-address_family_t addr_inet6 = {
+static const struct address_family_t addr_inet6 = {
"inet6",
- sizeof(methods6) / sizeof(method_t),
+ sizeof(methods6) / sizeof(struct method_t),
methods6
};
-#endif /* CONFIG_FEATURE_IFUPDOWN_IPV6 */
+#endif /* FEATURE_IFUPDOWN_IPV6 */
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPV4
-static int loopback_up(interface_defn_t *ifd, execfn *exec)
+#if ENABLE_FEATURE_IFUPDOWN_IPV4
+static int loopback_up(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% up", ifd, exec))
- return(0);
- if (!execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec))
- return(0);
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ int result;
+ result = execute("ip addr add 127.0.0.1/8 dev %iface%", ifd, exec);
+ result += execute("ip link set %iface% up", ifd, exec);
+ return ((result == 2) ? 2 : 0);
#else
- if (!execute("ifconfig %iface% 127.0.0.1 up", ifd, exec)) {
- return(0);
- }
+ return execute("ifconfig %iface% 127.0.0.1 up", ifd, exec);
#endif
- return(1);
}
-static int loopback_down(interface_defn_t *ifd, execfn *exec)
+static int loopback_down(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip addr flush dev %iface%", ifd, exec))
- return(0);
- if (!execute("ip link set %iface% down", ifd, exec))
- return(0);
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ int result;
+ result = execute("ip addr flush dev %iface%", ifd, exec);
+ result += execute("ip link set %iface% down", ifd, exec);
+ return ((result == 2) ? 2 : 0);
#else
- if (!execute("ifconfig %iface% 127.0.0.1 down", ifd, exec)) {
- return(0);
- }
+ return execute("ifconfig %iface% 127.0.0.1 down", ifd, exec);
#endif
- return(1);
}
-static int static_up(interface_defn_t *ifd, execfn *exec)
+static int static_up(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- if (!execute("ip link set %iface% up", ifd, exec))
- return(0);
- if (!execute("ip addr add %address%/%bnmask% [[broadcast %broadcast%]] dev %iface%", ifd, exec))
- return(0);
- if (!execute("[[ ip route add default via %gateway% dev %iface% ]]", ifd, exec))
- return(0);
+ int result;
+#if ENABLE_FEATURE_IFUPDOWN_IP
+ result = execute("ip addr add %address%/%bnmask%[[ broadcast %broadcast%]] "
+ "dev %iface%[[ peer %pointopoint%]][[ label %label%]]", ifd, exec);
+ result += execute("ip link set[[ mtu %mtu%]][[ address %hwaddress%]] %iface% up", ifd, exec);
+ result += execute("[[ip route add default via %gateway% dev %iface%]]", ifd, exec);
+ return ((result == 3) ? 3 : 0);
#else
- if (!execute("ifconfig %iface% %address% netmask %netmask% [[broadcast %broadcast%]] [[pointopoint %pointopoint%]] [[media %media%]] [[mtu %mtu%]] [[hw %hwaddress%]] up",
- ifd, exec)) {
- return(0);
- }
- if (!execute("[[ route add default gw %gateway% %iface% ]]", ifd, exec)) {
- return(0);
- }
+ /* 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% %iface%]]", ifd, exec);
+ return ((result == 3) ? 3 : 0);
#endif
- return(1);
}
-static int static_down(interface_defn_t *ifd, execfn *exec)
+static int static_down(struct interface_defn_t *ifd, execfn *exec)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_IP
- //if (!execute("[[ ip route del default via %gateway% dev %iface% ]]", ifd, exec))
- // return(0);
- if (!execute("ip addr flush dev %iface%", ifd, exec))
- return(0);
- if (!execute("ip link set %iface% down", ifd, exec))
- return(0);
+ 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
- if (!execute("[[ route del default gw %gateway% %iface% ]]", ifd, exec)) {
- return(0);
- }
- if (!execute("ifconfig %iface% down", ifd, exec)) {
- return(0);
- }
+ result = execute("[[route del default gw %gateway% %iface%]]", ifd, exec);
+ result += execute("ifconfig %iface% down", ifd, exec);
#endif
- return(1);
+ return ((result == 2) ? 2 : 0);
}
-static int execable(char *program)
+#if !ENABLE_APP_UDHCPC
+struct dhcp_client_t
{
- struct stat buf;
- if (0 == stat(program, &buf)) {
- if (S_ISREG(buf.st_mode) && (S_IXUSR & buf.st_mode)) {
- return(1);
- }
- }
- return(0);
-}
+ const char *name;
+ const char *startcmd;
+ const char *stopcmd;
+};
+
+static const struct dhcp_client_t ext_dhcp_clients[] = {
+ { "udhcpc",
+ "udhcpc -R -n -p /var/run/udhcpc.%iface%.pid -i %iface%[[ -H %hostname%]][[ -c %clientid%]][[ -s %script%]]",
+ "kill -TERM `cat /var/run/udhcpc.%iface%.pid` 2>/dev/null",
+ },
+ { "pump",
+ "pump -i %iface%[[ -h %hostname%]][[ -l %leasehours%]]",
+ "pump -i %iface% -k",
+ },
+ { "dhclient",
+ "dhclient -pf /var/run/dhclient.%iface%.pid %iface%",
+ "kill -9 `cat /var/run/dhclient.%iface%.pid` 2>/dev/null",
+ },
+ { "dhcpcd",
+ "dhcpcd[[ -h %hostname%]][[ -i %vendor%]][[ -I %clientid%]][[ -l %leasetime%]] %iface%",
+ "dhcpcd -k %iface%",
+ },
+};
+#endif
-static int dhcp_up(interface_defn_t *ifd, execfn *exec)
+static int dhcp_up(struct interface_defn_t *ifd, execfn *exec)
{
- if (execable("/sbin/dhclient")) {
- if (!execute("dhclient -pf /var/run/dhclient.%iface%.pid %iface%", ifd, exec)) {
- return(0);
- }
- } else if (execable("/sbin/pump")) {
- if (!execute("pump -i %iface% [[-h %hostname%]] [[-l %leasehours%]]", ifd, exec)) {
- return(0);
- }
- } else if (execable("/sbin/udhcpc")) {
- if (!execute("udhcpc -n -p /var/run/udhcpc.%iface%.pid -i %iface% [[-H %hostname%]] [[-c %clientid%]]", ifd, exec)) {
- return 0;
- }
- } else if (execable("/sbin/dhcpcd")) {
- if (!execute("dhcpcd [[-h %hostname%]] [[-i %vendor%]] [[-I %clientid%]] [[-l %leasetime%]] %iface%", ifd, exec)) {
- return(0);
- }
+#if ENABLE_APP_UDHCPC
+ return execute("udhcpc -R -n -p /var/run/udhcpc.%iface%.pid "
+ "-i %iface%[[ -H %hostname%]][[ -c %clientid%]][[ -s %script%]]",
+ ifd, exec);
+#else
+ int i, nclients = sizeof(ext_dhcp_clients) / sizeof(ext_dhcp_clients[0]);
+ for (i = 0; i < nclients; i++) {
+ if (exists_execable(ext_dhcp_clients[i].name))
+ return execute(ext_dhcp_clients[i].startcmd, ifd, exec);
}
- return(1);
+ bb_error_msg("no dhcp clients found");
+ return 0;
+#endif
}
-static int dhcp_down(interface_defn_t *ifd, execfn *exec)
+static int dhcp_down(struct interface_defn_t *ifd, execfn *exec)
{
- if (execable("/sbin/dhclient")) {
- if (!execute("kill -9 `cat /var/run/udhcpc.%iface%.pid`", ifd, exec)) {
- return(0);
- }
- } else if (execable("/sbin/pump")) {
- if (!execute("pump -i %iface% -k", ifd, exec)) {
- return(0);
- }
- } else if (execable("/sbin/udhcpc")) {
- if (!execute("kill -9 `cat /var/run/udhcpc.%iface%.pid`", ifd, exec)) {
- return(0);
- }
- } else if (execable("/sbin/dhcpcd")) {
- if (!execute("dhcpcd -k %iface%", ifd, exec)) {
- return(0);
- }
- }
- if (!execute("ifconfig %iface% down", ifd, exec)) {
- return(0);
+#if ENABLE_APP_UDHCPC
+ return execute("kill -TERM "
+ "`cat /var/run/udhcpc.%iface%.pid` 2>/dev/null", ifd, exec);
+#else
+ int i, nclients = sizeof(ext_dhcp_clients) / sizeof(ext_dhcp_clients[0]);
+ for (i = 0; i < nclients; i++) {
+ if (exists_execable(ext_dhcp_clients[i].name))
+ return execute(ext_dhcp_clients[i].stopcmd, ifd, exec);
}
- return(1);
+ bb_error_msg("no dhcp clients found, using static interface shutdown");
+ return static_down(ifd, exec);
+#endif
}
-static int bootp_up(interface_defn_t *ifd, execfn *exec)
+static int manual_up_down(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("bootpc [[--bootfile %bootfile%]] --dev %iface% [[--server %server%]] [[--hwaddr %hwaddr%]] --returniffail --serverbcast", ifd, exec)) {
- return 0;
- }
return 1;
}
-static int bootp_down(interface_defn_t *ifd, execfn *exec)
+static int bootp_up(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("ifconfig down %iface%", ifd, exec)) {
- return 0;
- }
- return 1;
+ return execute("bootpc[[ --bootfile %bootfile%]] --dev %iface%"
+ "[[ --server %server%]][[ --hwaddr %hwaddr%]] "
+ "--returniffail --serverbcast", ifd, exec);
}
-static int ppp_up(interface_defn_t *ifd, execfn *exec)
+static int ppp_up(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("pon [[%provider%]]", ifd, exec)) {
- return 0;
- }
- return 1;
+ return execute("pon[[ %provider%]]", ifd, exec);
}
-static int ppp_down(interface_defn_t *ifd, execfn *exec)
+static int ppp_down(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("poff [[%provider%]]", ifd, exec)) {
- return 0;
- }
- return 1;
+ return execute("poff[[ %provider%]]", ifd, exec);
}
-static int wvdial_up(interface_defn_t *ifd, execfn *exec)
+static int wvdial_up(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute("/sbin/start-stop-daemon --start -x /usr/bin/wvdial -p /var/run/wvdial.%iface% -b -m -- [[ %provider% ]]", ifd, exec)) {
- return 0;
- }
- return 1;
+ return execute("start-stop-daemon --start -x wvdial "
+ "-p /var/run/wvdial.%iface% -b -m --[[ %provider%]]", ifd, exec);
}
-static int wvdial_down(interface_defn_t *ifd, execfn *exec)
+static int wvdial_down(struct interface_defn_t *ifd, execfn *exec)
{
- if (!execute ("/sbin/start-stop-daemon --stop -x /usr/bin/wvdial -p /var/run/wvdial.%iface% -s 2", ifd, exec)) {
- return 0;
- }
- return 1;
+ return execute("start-stop-daemon --stop -x wvdial "
+ "-p /var/run/wvdial.%iface% -s 2", ifd, exec);
}
-static method_t methods[] = {
+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, bootp_down, },
+ { "bootp", bootp_up, static_down, },
{ "dhcp", dhcp_up, dhcp_down, },
{ "loopback", loopback_up, loopback_down, },
};
-address_family_t addr_inet = {
+static const struct address_family_t addr_inet = {
"inet",
- sizeof(methods) / sizeof(method_t),
+ sizeof(methods) / sizeof(struct method_t),
methods
};
-#endif /* ifdef CONFIG_FEATURE_IFUPDOWN_IPV4 */
+#endif /* if ENABLE_FEATURE_IFUPDOWN_IPV4 */
static char *next_word(char **buf)
{
unsigned short length;
char *word;
- if ((buf == NULL) || (*buf == NULL) || (**buf == '\0')) {
+ if (!buf || !*buf || !**buf) {
return NULL;
}
/* Skip over leading whitespace */
- word = *buf + strspn(*buf, " \t\n");
+ word = skip_whitespace(*buf);
+
+ /* Skip over comments */
+ if (*word == '#') {
+ return NULL;
+ }
/* Find the length of this word */
length = strcspn(word, " \t\n");
if (length == 0) {
- return(NULL);
+ return NULL;
}
*buf = word + length;
- **buf = '\0';
- (*buf)++;
+ /*DBU:[dave@cray.com] if we are already at EOL dont't increment beyond it */
+ if (**buf) {
+ **buf = '\0';
+ (*buf)++;
+ }
return word;
}
-static address_family_t *get_address_family(address_family_t *af[], char *name)
+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 method_t *get_method(address_family_t *af, char *name)
+static const struct method_t *get_method(const struct address_family_t *af, char *name)
{
int i;
+ if (!name)
+ return NULL;
+
for (i = 0; i < af->n_methods; i++) {
if (strcmp(af->method[i].name, name) == 0) {
return &af->method[i];
}
}
- return(NULL);
-}
-
-static int duplicate_if(interface_defn_t *ifa, interface_defn_t *ifb)
-{
- if (strcmp(ifa->iface, ifb->iface) != 0) {
- return(0);
- }
- if (ifa->address_family != ifb->address_family) {
- return(0);
- }
- return(1);
+ return NULL;
}
static const llist_t *find_list_string(const llist_t *list, const char *string)
{
+ if (string == NULL)
+ return NULL;
+
while (list) {
if (strcmp(list->data, string) == 0) {
- return(list);
+ return list;
}
list = list->link;
}
- return(NULL);
+ return NULL;
}
-static interfaces_file_t *read_interfaces(char *filename)
+static struct interfaces_file_t *read_interfaces(const char *filename)
{
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- mapping_defn_t *currmap = NULL;
+#if ENABLE_FEATURE_IFUPDOWN_MAPPING
+ struct mapping_defn_t *currmap = NULL;
#endif
- interface_defn_t *currif = NULL;
- interfaces_file_t *defn;
+ struct interface_defn_t *currif = NULL;
+ struct interfaces_file_t *defn;
FILE *f;
char *firstword;
char *buf;
enum { NONE, IFACE, MAPPING } currently_processing = NONE;
- defn = xmalloc(sizeof(interfaces_file_t));
- defn->autointerfaces = NULL;
- defn->mappings = NULL;
- defn->ifaces = NULL;
+ defn = xzalloc(sizeof(struct interfaces_file_t));
f = xfopen(filename, "r");
- while ((buf = get_line_from_file(f)) != NULL) {
+ while ((buf = xmalloc_getline(f)) != NULL) {
char *buf_ptr = buf;
- /* Ignore comments */
- if (buf[0] == '#') {
- continue;
- }
-
firstword = next_word(&buf_ptr);
if (firstword == NULL) {
+ free(buf);
continue; /* blank line */
}
if (strcmp(firstword, "mapping") == 0) {
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- currmap = xmalloc(sizeof(mapping_defn_t));
- currmap->max_matches = 0;
- currmap->n_matches = 0;
- currmap->match = NULL;
+#if ENABLE_FEATURE_IFUPDOWN_MAPPING
+ currmap = xzalloc(sizeof(struct mapping_defn_t));
while ((firstword = next_word(&buf_ptr)) != NULL) {
if (currmap->max_matches == currmap->n_matches) {
currmap->mapping = NULL;
currmap->script = NULL;
{
- mapping_defn_t **where = &defn->mappings;
+ 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(firstword, "iface") == 0) {
- {
- char *iface_name;
- char *address_family_name;
- char *method_name;
- address_family_t *addr_fams[] = {
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPV4
- &addr_inet,
-#endif
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPV6
- &addr_inet6,
+ static const struct address_family_t *const addr_fams[] = {
+#if ENABLE_FEATURE_IFUPDOWN_IPV4
+ &addr_inet,
#endif
-#ifdef CONFIG_FEATURE_IFUPDOWN_IPX
- &addr_ipx,
+#if ENABLE_FEATURE_IFUPDOWN_IPV6
+ &addr_inet6,
#endif
- NULL
- };
+ NULL
+ };
- currif = xmalloc(sizeof(interface_defn_t));
- iface_name = next_word(&buf_ptr);
- address_family_name = next_word(&buf_ptr);
- method_name = next_word(&buf_ptr);
+ char *iface_name;
+ char *address_family_name;
+ char *method_name;
+ llist_t *iface_list;
- if (buf_ptr == NULL) {
- error_msg("too few parameters for line \"%s\"", buf);
- return NULL;
- }
-
- if (buf_ptr[0] != '\0') {
- error_msg("too many parameters \"%s\"", buf);
- return NULL;
- }
-
- currif->iface = xstrdup(iface_name);
+ currif = xzalloc(sizeof(struct interface_defn_t));
+ iface_name = next_word(&buf_ptr);
+ address_family_name = next_word(&buf_ptr);
+ method_name = next_word(&buf_ptr);
- currif->address_family = get_address_family(addr_fams, address_family_name);
- if (!currif->address_family) {
- error_msg("unknown address type \"%s\"", buf);
- return NULL;
- }
+ if (buf_ptr == NULL) {
+ bb_error_msg("too few parameters for line \"%s\"", buf);
+ return NULL;
+ }
- currif->method = get_method(currif->address_family, method_name);
- if (!currif->method) {
- error_msg("unknown method \"%s\"", buf);
- return NULL;
- }
+ /* ship any trailing whitespace */
+ buf_ptr = skip_whitespace(buf_ptr);
- currif->automatic = 1;
- currif->max_options = 0;
- currif->n_options = 0;
- currif->option = NULL;
+ if (buf_ptr[0] != '\0') {
+ bb_error_msg("too many parameters \"%s\"", buf);
+ return NULL;
+ }
+ currif->iface = xstrdup(iface_name);
- {
- interface_defn_t **where = &defn->ifaces;
+ currif->address_family = get_address_family(addr_fams, address_family_name);
+ if (!currif->address_family) {
+ bb_error_msg("unknown address type \"%s\"", address_family_name);
+ return NULL;
+ }
- while (*where != NULL) {
- if (duplicate_if(*where, currif)) {
- error_msg("duplicate interface \"%s\"", buf);
- return NULL;
- }
- where = &(*where)->next;
- }
+ currif->method = get_method(currif->address_family, method_name);
+ if (!currif->method) {
+ bb_error_msg("unknown method \"%s\"", method_name);
+ return NULL;
+ }
- *where = currif;
- currif->next = NULL;
+ 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("duplicate interface \"%s\"", tmp->iface);
+ return NULL;
}
}
+ 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(firstword, "auto") == 0) {
while ((firstword = next_word(&buf_ptr)) != NULL) {
/* Check the interface isnt already listed */
if (find_list_string(defn->autointerfaces, firstword)) {
- perror_msg_and_die("interface declared auto twice \"%s\"", buf);
+ bb_perror_msg_and_die("interface declared auto twice \"%s\"", buf);
}
/* Add the interface to the list */
- defn->autointerfaces = llist_add_to(defn->autointerfaces, strdup(firstword));
+ llist_add_to_end(&(defn->autointerfaces), xstrdup(firstword));
+ debug_noise("\nauto %s\n", firstword);
}
currently_processing = NONE;
} else {
switch (currently_processing) {
case IFACE:
- {
- int i;
+ {
+ int i;
- if (xstrlen(buf_ptr) == 0) {
- error_msg("option with empty value \"%s\"", buf);
- return NULL;
- }
+ if (strlen(buf_ptr) == 0) {
+ bb_error_msg("option with empty value \"%s\"", buf);
+ return NULL;
+ }
- if (strcmp(firstword, "up") != 0
- && strcmp(firstword, "down") != 0
- && strcmp(firstword, "pre-up") != 0
- && strcmp(firstword, "post-down") != 0) {
- for (i = 0; i < currif->n_options; i++) {
- if (strcmp(currif->option[i].name, firstword) == 0) {
- error_msg("duplicate option \"%s\"", buf);
- return NULL;
+ if (strcmp(firstword, "up") != 0
+ && strcmp(firstword, "down") != 0
+ && strcmp(firstword, "pre-up") != 0
+ && strcmp(firstword, "post-down") != 0) {
+ for (i = 0; i < currif->n_options; i++) {
+ if (strcmp(currif->option[i].name, firstword) == 0) {
+ bb_error_msg("duplicate option \"%s\"", buf);
+ return NULL;
+ }
}
}
}
- }
if (currif->n_options >= currif->max_options) {
- variable_t *opt;
+ struct variable_t *opt;
currif->max_options = currif->max_options + 10;
opt = xrealloc(currif->option, sizeof(*opt) * currif->max_options);
currif->option = opt;
}
currif->option[currif->n_options].name = xstrdup(firstword);
- currif->option[currif->n_options].value = xstrdup(next_word(&buf_ptr));
+ currif->option[currif->n_options].value = xstrdup(buf_ptr);
if (!currif->option[currif->n_options].name) {
perror(filename);
return NULL;
perror(filename);
return NULL;
}
+ debug_noise("\t%s=%s\n", currif->option[currif->n_options].name,
+ currif->option[currif->n_options].value);
currif->n_options++;
break;
case MAPPING:
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
+#if ENABLE_FEATURE_IFUPDOWN_MAPPING
if (strcmp(firstword, "script") == 0) {
if (currmap->script != NULL) {
- error_msg("duplicate script in mapping \"%s\"", buf);
+ bb_error_msg("duplicate script in mapping \"%s\"", buf);
return NULL;
} else {
currmap->script = xstrdup(next_word(&buf_ptr));
currmap->mapping[currmap->n_mappings] = xstrdup(next_word(&buf_ptr));
currmap->n_mappings++;
} else {
- error_msg("misplaced option \"%s\"", buf);
+ bb_error_msg("misplaced option \"%s\"", buf);
return NULL;
}
#endif
break;
case NONE:
default:
- error_msg("misplaced option \"%s\"", buf);
+ bb_error_msg("misplaced option \"%s\"", buf);
return NULL;
}
}
free(buf);
}
if (ferror(f) != 0) {
- perror_msg_and_die("%s", filename);
+ bb_perror_msg_and_die("%s", filename);
}
fclose(f);
return defn;
}
-static char *setlocalenv(char *format, char *name, char *value)
+static char *setlocalenv(char *format, const char *name, const char *value)
{
char *result;
char *here;
char *there;
- result = xmalloc(xstrlen(format) + xstrlen(name) + xstrlen(value) + 1);
-
- sprintf(result, format, name, value);
+ result = xasprintf(format, name, value);
for (here = there = result; *there != '=' && *there; there++) {
if (*there == '-')
here++;
}
}
- memmove(here, there, xstrlen(there) + 1);
+ memmove(here, there, strlen(there) + 1);
return result;
}
-static void set_environ(interface_defn_t *iface, char *mode)
+static void set_environ(struct interface_defn_t *iface, const char *mode)
{
char **environend;
int i;
const int n_env_entries = iface->n_options + 5;
char **ppch;
- if (environ != NULL) {
- for (ppch = environ; *ppch; ppch++) {
+ if (my_environ != NULL) {
+ for (ppch = my_environ; *ppch; ppch++) {
free(*ppch);
*ppch = NULL;
}
- free(environ);
- environ = NULL;
+ free(my_environ);
}
- environ = xmalloc(sizeof(char *) * (n_env_entries + 1 /* for final NULL */ ));
- environend = environ;
- *environend = NULL;
+ my_environ = xzalloc(sizeof(char *) * (n_env_entries + 1 /* for final NULL */ ));
+ environend = my_environ;
for (i = 0; i < iface->n_options; i++) {
if (strcmp(iface->option[i].name, "up") == 0
- || strcmp(iface->option[i].name, "down") == 0
- || strcmp(iface->option[i].name, "pre-up") == 0
- || strcmp(iface->option[i].name, "post-down") == 0) {
+ || strcmp(iface->option[i].name, "down") == 0
+ || strcmp(iface->option[i].name, "pre-up") == 0
+ || strcmp(iface->option[i].name, "post-down") == 0) {
continue;
}
*(environend++) = setlocalenv("IF_%s=%s", iface->option[i].name, iface->option[i].value);
- *environend = NULL;
}
*(environend++) = setlocalenv("%s=%s", "IFACE", iface->iface);
- *environend = NULL;
*(environend++) = setlocalenv("%s=%s", "ADDRFAM", iface->address_family->name);
- *environend = NULL;
*(environend++) = setlocalenv("%s=%s", "METHOD", iface->method->name);
- *environend = NULL;
*(environend++) = setlocalenv("%s=%s", "MODE", mode);
- *environend = NULL;
- *(environend++) = setlocalenv("%s=%s", "PATH", "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin");
- *environend = NULL;
+ *(environend++) = setlocalenv("%s=%s", "PATH", startup_PATH);
}
static int doit(char *str)
{
- if (verbose || no_act) {
- error_msg("%s", str);
+ if (option_mask32 & (OPT_no_act|OPT_verbose)) {
+ puts(str);
}
- if (!no_act) {
+ if (!(option_mask32 & OPT_no_act)) {
pid_t child;
int status;
fflush(NULL);
- switch (child = fork()) {
- case -1: /* failure */
+ child = fork();
+ switch (child) {
+ case -1: /* failure */
return 0;
- case 0: /* child */
- execle("/bin/sh", "/bin/sh", "-c", str, NULL, environ);
+ case 0: /* child */
+ execle(DEFAULT_SHELL, DEFAULT_SHELL, "-c", str, NULL, my_environ);
exit(127);
}
waitpid(child, &status, 0);
return 0;
}
}
- return (1);
+ return 1;
}
-static int execute_all(interface_defn_t *ifd, execfn *exec, const char *opt)
+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 (!(*exec) (ifd->option[i].value)) {
+ if (!doit(ifd->option[i].value)) {
return 0;
}
}
}
- buf = xmalloc(xstrlen(opt) + 19);
- sprintf(buf, "/etc/network/if-%s.d", opt);
- run_parts(&buf, 2);
- free(buf);
- return (1);
+ buf = xasprintf("run-parts /etc/network/if-%s.d", opt);
+ /* heh, we don't bother free'ing it */
+ return doit(buf);
}
-static int iface_up(interface_defn_t *iface)
+static int check(char *str)
{
- set_environ(iface, "start");
- if (!execute_all(iface, doit, "pre-up")) {
- return (0);
- }
- if (!iface->method->up(iface, doit)) {
- return (0);
- }
- if (!execute_all(iface, doit, "up")) {
- return (0);
- }
+ return str != NULL;
+}
- return (1);
+static int iface_up(struct interface_defn_t *iface)
+{
+ if (!iface->method->up(iface, check)) return -1;
+ set_environ(iface, "start");
+ if (!execute_all(iface, "pre-up")) return 0;
+ if (!iface->method->up(iface, doit)) return 0;
+ if (!execute_all(iface, "up")) return 0;
+ return 1;
}
-static int iface_down(interface_defn_t *iface)
+static int iface_down(struct interface_defn_t *iface)
{
+ if (!iface->method->down(iface,check)) return -1;
set_environ(iface, "stop");
- if (!execute_all(iface, doit, "down")) {
- return (0);
- }
- if (!iface->method->down(iface, doit)) {
- return (0);
- }
- if (!execute_all(iface, doit, "post-down")) {
- return (0);
- }
- return (1);
+ if (!execute_all(iface, "down")) return 0;
+ if (!iface->method->down(iface, doit)) return 0;
+ if (!execute_all(iface, "post-down")) return 0;
+ return 1;
}
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
+#if ENABLE_FEATURE_IFUPDOWN_MAPPING
static int popen2(FILE **in, FILE **out, char *command, ...)
{
va_list ap;
/* unreached */
}
-static int run_mapping(char *physical, char *logical, int len, mapping_defn_t * map)
+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. */
pid = popen2(&in, &out, map->script, physical, NULL);
- if (pid == 0) {
- return 0;
- }
+
+ /* popen2() returns 0 on failure. */
+ if (pid == 0)
+ return logical;
+
+ /* Write mappings to stdin of mapping script. */
for (i = 0; i < map->n_mappings; i++) {
fprintf(in, "%s\n", map->mapping[i]);
}
fclose(in);
waitpid(pid, &status, 0);
- if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
- if (fgets(logical, len, out)) {
- char *pch = logical + xstrlen(logical) - 1;
- while (pch >= logical && isspace(*pch))
+ 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(MAX_INTERFACE_LENGTH);
+
+ if (fgets(new_logical, MAX_INTERFACE_LENGTH, out)) {
+ /* 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;
+ } else {
+ /* If we are UNABLE to read a line of output, discard our
+ * freshly allocated memory. */
+ free(new_logical);
}
}
+
fclose(out);
- return 1;
+ return logical;
}
-#endif /* CONFIG_FEATURE_IFUPDOWN_IPV6 */
+#endif /* FEATURE_IFUPDOWN_MAPPING */
static llist_t *find_iface_state(llist_t *state_list, const char *iface)
{
- unsigned short iface_len = xstrlen(iface);
+ unsigned short iface_len = strlen(iface);
llist_t *search = state_list;
while (search) {
if ((strncmp(search->data, iface, iface_len) == 0) &&
- (search->data[iface_len] == '=')) {
- return(search);
+ (search->data[iface_len] == '=')) {
+ return search;
}
search = search->link;
}
- return(NULL);
+ return NULL;
}
-extern int ifupdown_main(int argc, char **argv)
+int ifupdown_main(int argc, char **argv)
{
- int (*cmds) (interface_defn_t *) = NULL;
- interfaces_file_t *defn;
- FILE *state_fp = NULL;
+ int (*cmds)(struct interface_defn_t *) = NULL;
+ struct interfaces_file_t *defn;
llist_t *state_list = NULL;
llist_t *target_list = NULL;
- char *interfaces = "/etc/network/interfaces";
- const char *statefile = "/var/run/ifstate";
-
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- int run_mappings = 1;
-#endif
- int do_all = 0;
- int force = 0;
- int i;
+ const char *interfaces = "/etc/network/interfaces";
+ int any_failures = 0;
+ cmds = iface_down;
if (applet_name[2] == 'u') {
/* ifup command */
cmds = iface_up;
- } else {
- /* ifdown command */
- cmds = iface_down;
- }
-
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- while ((i = getopt(argc, argv, "i:hvnamf")) != -1) {
-#else
- while ((i = getopt(argc, argv, "i:hvnaf")) != -1) {
-#endif
- switch (i) {
- case 'i': /* interfaces */
- interfaces = xstrdup(optarg);
- break;
- case 'v': /* verbose */
- verbose = 1;
- break;
- case 'a': /* all */
- do_all = 1;
- break;
- case 'n': /* no-act */
- no_act = 1;
- break;
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- case 'm': /* no-mappings */
- run_mappings = 0;
- break;
-#endif
- case 'f': /* force */
- force = 1;
- break;
- default:
- show_usage();
- break;
- }
}
+ getopt32(argc, argv, OPTION_STR, &interfaces);
if (argc - optind > 0) {
- if (do_all) {
- show_usage();
- }
+ if (DO_ALL) bb_show_usage();
} else {
- if (!do_all) {
- show_usage();
- }
- }
+ if (!DO_ALL) bb_show_usage();
+ }
+ debug_noise("reading %s file:\n", interfaces);
defn = read_interfaces(interfaces);
+ debug_noise("\ndone reading %s\n\n", interfaces);
- if (no_act) {
- state_fp = fopen(statefile, "r");
+ if (!defn) {
+ return EXIT_FAILURE;
}
+ startup_PATH = getenv("PATH");
+ if (!startup_PATH) startup_PATH = "";
+
/* Create a list of interfaces to work on */
- if (do_all) {
+ if (DO_ALL) {
if (cmds == iface_up) {
target_list = defn->autointerfaces;
- } else if (cmds == iface_down) {
+ } else {
+ /* iface_down */
const llist_t *list = state_list;
while (list) {
- target_list = llist_add_to(target_list, strdup(list->data));
+ llist_add_to_end(&target_list, xstrdup(list->data));
list = list->link;
}
target_list = defn->autointerfaces;
}
} else {
- target_list = llist_add_to(target_list, argv[optind]);
+ llist_add_to_end(&target_list, argv[optind]);
}
-
/* Update the interfaces */
while (target_list) {
- interface_defn_t *currif;
+ llist_t *iface_list;
+ struct interface_defn_t *currif;
char *iface;
char *liface;
char *pch;
int okay = 0;
+ int cmds_ret;
- iface = strdup(target_list->data);
+ iface = xstrdup(target_list->data);
target_list = target_list->link;
pch = strchr(iface, '=');
if (pch) {
*pch = '\0';
- liface = strdup(pch + 1);
+ liface = xstrdup(pch + 1);
} else {
- liface = strdup(iface);
+ liface = xstrdup(iface);
}
- if (!force) {
+ if (!FORCE) {
const llist_t *iface_state = find_iface_state(state_list, iface);
if (cmds == iface_up) {
/* ifup */
if (iface_state) {
- error_msg("interface %s already configured", iface);
+ bb_error_msg("interface %s already configured", iface);
continue;
}
} else {
/* ifdown */
if (iface_state) {
- error_msg("interface %s not configured", iface);
+ bb_error_msg("interface %s not configured", iface);
continue;
}
}
}
-#ifdef CONFIG_FEATURE_IFUPDOWN_MAPPING
- if ((cmds == iface_up) && run_mappings) {
- mapping_defn_t *currmap;
+#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) {
- error_msg("Running mapping script %s on %s", currmap->script, liface);
+ if (VERBOSE) {
+ printf("Running mapping script %s on %s\n", currmap->script, liface);
}
- run_mapping(iface, liface, sizeof(liface), currmap);
+ liface = run_mapping(iface, currmap);
break;
}
}
}
#endif
- for (currif = defn->ifaces; currif; currif = currif->next) {
+ 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;
- if (verbose) {
- error_msg("Configuring interface %s=%s (%s)", iface, liface, currif->address_family->name);
- }
+ debug_noise("\nConfiguring interface %s (%s)\n", liface, currif->address_family->name);
/* Call the cmds function pointer, does either iface_up() or iface_down() */
- if (cmds(currif) == -1) {
- printf
- ("Don't seem to be have all the variables for %s/%s.\n",
- liface, currif->address_family->name);
+ cmds_ret = cmds(currif);
+ if (cmds_ret == -1) {
+ bb_error_msg("don't seem to have all the variables for %s/%s",
+ liface, currif->address_family->name);
+ any_failures = 1;
+ } else if (cmds_ret == 0) {
+ any_failures = 1;
}
currif->iface = oldiface;
}
+ iface_list = iface_list->link;
+ }
+ if (VERBOSE) {
+ puts("");
}
- if (!okay && !force) {
- error_msg("Ignoring unknown interface %s=%s.", iface, liface);
+ if (!okay && !FORCE) {
+ bb_error_msg("ignoring unknown interface %s", liface);
+ any_failures = 1;
} else {
llist_t *iface_state = find_iface_state(state_list, iface);
if (cmds == iface_up) {
- char *newiface = xmalloc(xstrlen(iface) + 1 + xstrlen(liface) + 1);
- sprintf(newiface, "%s=%s", iface, liface);
+ char *newiface = xasprintf("%s=%s", iface, liface);
if (iface_state == NULL) {
- state_list = llist_add_to(state_list, newiface);
+ llist_add_to_end(&state_list, newiface);
} else {
free(iface_state->data);
iface_state->data = newiface;
}
- } else if (cmds == iface_down) {
+ } else {
/* Remove an interface from the linked list */
- if (iface_state) {
- /* This needs to be done better */
- free(iface_state->data);
- free(iface_state->link);
- if (iface_state->link) {
- iface_state->data = iface_state->link->data;
- iface_state->link = iface_state->link->link;
- } else {
- iface_state->data = NULL;
- iface_state->link = NULL;
- }
- }
+ free(llist_pop(&iface_state));
}
}
}
/* Actually write the new state */
- if (!no_act) {
-
- if (state_fp)
- fclose(state_fp);
- state_fp = xfopen(statefile, "a+");
-
- if (ftruncate(fileno(state_fp), 0) < 0) {
- error_msg_and_die("failed to truncate statefile %s: %s", statefile, strerror(errno));
- }
-
- rewind(state_fp);
+ if (!NO_ACT) {
+ FILE *state_fp;
+ state_fp = xfopen("/var/run/ifstate", "w");
while (state_list) {
if (state_list->data) {
- fputs(state_list->data, state_fp);
- fputc('\n', state_fp);
+ fprintf(state_fp, "%s\n", state_list->data);
}
state_list = state_list->link;
}
- fflush(state_fp);
- }
-
- /* Cleanup */
- if (state_fp != NULL) {
fclose(state_fp);
- state_fp = NULL;
}
- return 0;
+ return any_failures;
}
projects / oweals / busybox.git / blobdiff