/* vi: set sw=4 ts=4: */
/*
- * arpping.c
- *
* Mostly stolen from: dhcpcd - DHCP client daemon
* by Yoichi Hariguchi <yoichi@fore.com>
*
/* vi: set sw=4 ts=4: */
-/* common.h
- *
+/*
* Russ Dill <Russ.Dill@asu.edu> September 2001
* Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
*
/* vi: set sw=4 ts=4: */
/*
- * udhcp DHCP client
+ * udhcp client
*
* Russ Dill <Russ.Dill@asu.edu> July 2001
*
/* vi: set sw=4 ts=4: */
+/*
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
#ifndef UDHCP_DHCPC_H
#define UDHCP_DHCPC_H 1
/* vi: set sw=4 ts=4: */
/*
- * udhcp Server
+ * udhcp server
* Copyright (C) 1999 Matthew Ramsay <matthewr@moreton.com.au>
* Chris Trew <ctrew@moreton.com.au>
*
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-
#include <syslog.h>
#include "common.h"
#include "dhcpc.h"
/* vi: set sw=4 ts=4: */
-/* dhcpd.h */
+/*
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
#ifndef UDHCP_DHCPD_H
#define UDHCP_DHCPD_H 1
#endif
-/*** leases.h ***/
-
typedef uint32_t leasetime_t;
typedef int32_t signed_leasetime_t;
uint32_t find_free_or_expired_nip(const uint8_t *safe_mac) FAST_FUNC;
-/*** static_leases.h ***/
-
/* Config file parser will pass static lease info to this function
* which will add it to a data structure that can be searched later */
void add_static_lease(struct static_lease **st_lease_pp, uint8_t *mac, uint32_t nip) FAST_FUNC;
#endif
-/*** files.h ***/
-
void read_config(const char *file) FAST_FUNC;
void write_leases(void) FAST_FUNC;
void read_leases(const char *file) FAST_FUNC;
* Netbeat AG
* Upstream has GPL v2 or later
*/
-
#include "common.h"
#define SERVER_PORT 67
return client_dev;
}
-
/* Creates listen sockets (in fds) bound to client and server ifaces,
* and returns numerically max fd.
*/
return n;
}
-
/**
* pass_to_server() - forwards dhcp packets from client to server
* p - packet to send
#define NS_CMPRSFLGS 0xc0 /* name compression pointer flag */
-/* expand a RFC1035-compressed list of domain names "cstr", of length "clen";
+/* Expand a RFC1035-compressed list of domain names "cstr", of length "clen";
* returns a newly allocated string containing the space-separated domains,
* prefixed with the contents of string pre, or NULL if an error occurs.
*/
return res;
}
-/* returns the offset within cstr at which dname can be found, or -1
- */
+/* Returns the offset within cstr at which dname can be found, or -1 */
static int find_offset(const uint8_t *cstr, int clen, const uint8_t *dname)
{
const uint8_t *c, *d;
return -1;
}
-/* computes string to be appended to cstr so that src would be added to
+/* Computes string to be appended to cstr so that src would be added to
* the compression (best case, it's a 2-byte pointer to some offset within
* cstr; worst case, it's all of src, converted to <4>host<3>com<0> format).
* The computed string is returned directly; its length is returned via retlen;
/*
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-
#include "common.h"
#include "dhcpd.h"
#include "unicode.h"
/* "00:00:00:00:00:00 255.255.255.255 ABCDEFGHIJKLMNOPQRS Wed Jun 30 21:49:08 1993" */
/* "123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 */
- if (full_read(fd, &written_at, sizeof(written_at)) != sizeof(written_at))
- return 0;
+ xread(fd, &written_at, sizeof(written_at));
written_at = ntoh64(written_at);
curr = time(NULL);
if (curr < written_at)
fmt = ":%02x";
}
addr.s_addr = lease.lease_nip;
- /* actually, 15+1 and 19+1, +1 is a space between columns */
- /* lease.hostname is char[20] and is always NUL terminated */
#if ENABLE_FEATURE_ASSUME_UNICODE
{
- char *uni_name = unicode_conv_to_printable_fixedwidth(NULL, lease.hostname, 20);
- printf(" %-16s%s", inet_ntoa(addr), uni_name);
+ char *uni_name = unicode_conv_to_printable_fixedwidth(NULL, lease.hostname, 19);
+ printf(" %-16s%s ", inet_ntoa(addr), uni_name);
free(uni_name);
}
#else
+ /* actually, 15+1 and 19+1, +1 is a space between columns */
+ /* lease.hostname is char[20] and is always NUL terminated */
printf(" %-16s%-20s", inet_ntoa(addr), lease.hostname);
#endif
expires_abs = ntohl(lease.expires) + written_at;
/* vi: set sw=4 ts=4: */
/*
- * files.c -- DHCP server file manipulation *
+ * DHCP server config and lease file manipulation
+ *
* Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
-
#include <netinet/ether.h>
#include "common.h"
};
static const struct config_keyword keywords[] = {
- /* keyword handler variable address default */
- {"start", udhcp_str2nip, &(server_config.start_ip), "192.168.0.20"},
- {"end", udhcp_str2nip, &(server_config.end_ip), "192.168.0.254"},
- {"interface", read_str, &(server_config.interface), "eth0"},
+ /* keyword handler variable address default */
+ {"start" , udhcp_str2nip , &server_config.start_ip , "192.168.0.20"},
+ {"end" , udhcp_str2nip , &server_config.end_ip , "192.168.0.254"},
+ {"interface" , read_str , &server_config.interface , "eth0"},
/* Avoid "max_leases value not sane" warning by setting default
* to default_end_ip - default_start_ip + 1: */
- {"max_leases", read_u32, &(server_config.max_leases), "235"},
- {"auto_time", read_u32, &(server_config.auto_time), "7200"},
- {"decline_time", read_u32, &(server_config.decline_time), "3600"},
- {"conflict_time",read_u32, &(server_config.conflict_time),"3600"},
- {"offer_time", read_u32, &(server_config.offer_time), "60"},
- {"min_lease", read_u32, &(server_config.min_lease_sec),"60"},
- {"lease_file", read_str, &(server_config.lease_file), LEASES_FILE},
- {"pidfile", read_str, &(server_config.pidfile), "/var/run/udhcpd.pid"},
- {"siaddr", udhcp_str2nip, &(server_config.siaddr_nip), "0.0.0.0"},
+ {"max_leases" , read_u32 , &server_config.max_leases , "235"},
+ {"auto_time" , read_u32 , &server_config.auto_time , "7200"},
+ {"decline_time" , read_u32 , &server_config.decline_time , "3600"},
+ {"conflict_time", read_u32 , &server_config.conflict_time, "3600"},
+ {"offer_time" , read_u32 , &server_config.offer_time , "60"},
+ {"min_lease" , read_u32 , &server_config.min_lease_sec, "60"},
+ {"lease_file" , read_str , &server_config.lease_file , LEASES_FILE},
+ {"pidfile" , read_str , &server_config.pidfile , "/var/run/udhcpd.pid"},
+ {"siaddr" , udhcp_str2nip , &server_config.siaddr_nip , "0.0.0.0"},
/* keywords with no defaults must be last! */
- {"option", udhcp_str2optset, &(server_config.options), ""},
- {"opt", udhcp_str2optset, &(server_config.options), ""},
- {"notify_file", read_str, &(server_config.notify_file), ""},
- {"sname", read_str, &(server_config.sname), ""},
- {"boot_file", read_str, &(server_config.boot_file), ""},
- {"static_lease", read_staticlease, &(server_config.static_leases), ""},
+ {"option" , udhcp_str2optset, &server_config.options , ""},
+ {"opt" , udhcp_str2optset, &server_config.options , ""},
+ {"notify_file" , read_str , &server_config.notify_file , ""},
+ {"sname" , read_str , &server_config.sname , ""},
+ {"boot_file" , read_str , &server_config.boot_file , ""},
+ {"static_lease" , read_staticlease, &server_config.static_leases, ""},
};
enum { KWS_WITH_DEFAULTS = ARRAY_SIZE(keywords) - 6 };
/* vi: set sw=4 ts=4: */
/*
- * leases.c -- tools to manage DHCP leases
* Russ Dill <Russ.Dill@asu.edu> July 2001
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
-
#include "common.h"
#include "dhcpd.h"
-
/* Find the oldest expired lease, NULL if there are no expired leases */
static struct dyn_lease *oldest_expired_lease(void)
{
return oldest_lease;
}
-
/* Clear out all leases with matching nonzero chaddr OR yiaddr.
* If chaddr == NULL, this is a conflict lease.
*/
}
}
-
-/* Add a lease into the table, clearing out any old ones
+/* Add a lease into the table, clearing out any old ones.
* If chaddr == NULL, this is a conflict lease.
*/
struct dyn_lease* FAST_FUNC add_lease(
return oldest;
}
-
/* True if a lease has expired */
int FAST_FUNC is_expired_lease(struct dyn_lease *lease)
{
return (lease->expires < (leasetime_t) time(NULL));
}
-
/* Find the first lease that matches MAC, NULL if no match */
struct dyn_lease* FAST_FUNC find_lease_by_mac(const uint8_t *mac)
{
return NULL;
}
-
/* Find the first lease that matches IP, NULL is no match */
struct dyn_lease* FAST_FUNC find_lease_by_nip(uint32_t nip)
{
return NULL;
}
-
/* Check if the IP is taken; if it is, add it to the lease table */
static int nobody_responds_to_arp(uint32_t nip, const uint8_t *safe_mac)
{
return 0;
}
-
/* Find a new usable (we think) address */
uint32_t FAST_FUNC find_free_or_expired_nip(const uint8_t *safe_mac)
{
/* vi: set sw=4 ts=4: */
/*
- * packet.c -- packet ops
+ * Packet ops
+ *
* Rewrite by Russ Dill <Russ.Dill@asu.edu> July 2001
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
#include <netinet/in.h>
#if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined _NEWLIB_VERSION
-#include <netpacket/packet.h>
-#include <net/ethernet.h>
+# include <netpacket/packet.h>
+# include <net/ethernet.h>
#else
-#include <asm/types.h>
-#include <linux/if_packet.h>
-#include <linux/if_ether.h>
+# include <linux/if_packet.h>
+# include <linux/if_ether.h>
#endif
#include "common.h"
/* vi: set sw=4 ts=4: */
-/* signalpipe.c
- *
+/*
* Signal pipe infrastructure. A reliable way of delivering signals.
*
* Russ Dill <Russ.Dill@asu.edu> December 2003
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-
#include "common.h"
-
+/* Global variable: we access it from signal handler */
static struct fd_pair signal_pipe;
static void signal_handler(int sig)
bb_perror_msg("can't send signal");
}
-
/* Call this before doing anything else. Sets up the socket pair
* and installs the signal handler */
void FAST_FUNC udhcp_sp_setup(void)
, signal_handler);
}
-
/* Quick little function to setup the rfds. Will return the
* max_fd for use with select. Limited in that you can only pass
* one extra fd */
return signal_pipe.rd > extra_fd ? signal_pipe.rd : extra_fd;
}
-
/* Read a signal from the signal pipe. Returns 0 if there is
* no signal, -1 on error (and sets errno appropriately), and
* your signal on success */
/* vi: set sw=4 ts=4: */
/*
- * socket.c -- DHCP server client/server socket creation
+ * DHCP server client/server socket creation
*
* udhcp client/server
* Copyright (C) 1999 Matthew Ramsay <matthewr@moreton.com.au>
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-
#include <net/if.h>
#if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined _NEWLIB_VERSION
-#include <netpacket/packet.h>
-#include <net/ethernet.h>
+# include <netpacket/packet.h>
+# include <net/ethernet.h>
#else
-#include <asm/types.h>
-#include <linux/if_packet.h>
-#include <linux/if_ether.h>
+# include <linux/if_packet.h>
+# include <linux/if_ether.h>
#endif
#include "common.h"
-
int FAST_FUNC udhcp_read_interface(const char *interface, int *ifindex, uint32_t *nip, uint8_t *mac)
{
int fd;
/* vi: set sw=4 ts=4: */
/*
- * static_leases.c -- Couple of functions to assist with storing and
- * retrieving data for static leases
+ * Storing and retrieving data for static leases
*
* Wade Berrier <wberrier@myrealbox.com> September 2004
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
-
#include "common.h"
#include "dhcpd.h"
-
/* Takes the address of the pointer to the static_leases linked list,
* address to a 6 byte mac address,
* 4 byte IP address */
projects / oweals / busybox.git / commitdiff