* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#define RCSID "$Id: ipcp.c,v 1.73 2008/05/26 08:33:22 paulus Exp $"
-
/*
* TODO:
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+ #include <net/if.h>
#include "pppd.h"
#include "fsm.h"
#include "ipcp.h"
#include "pathnames.h"
-static const char rcsid[] = RCSID;
/* global vars */
ipcp_options ipcp_wantoptions[NUM_PPP]; /* Options that we want to request */
bool noremoteip = 0; /* Let him have no IP address */
/* Hook for a plugin to know when IP protocol has come up */
-void (*ip_up_hook) __P((void)) = NULL;
+void (*ip_up_hook)(void) = NULL;
/* Hook for a plugin to know when IP protocol has come down */
-void (*ip_down_hook) __P((void)) = NULL;
+void (*ip_down_hook)(void) = NULL;
/* Hook for a plugin to choose the remote IP address */
-void (*ip_choose_hook) __P((u_int32_t *)) = NULL;
+void (*ip_choose_hook)(u_int32_t *) = NULL;
/* Notifiers for when IPCP goes up and down */
struct notifier *ip_up_notifier = NULL;
/*
* Callbacks for fsm code. (CI = Configuration Information)
*/
-static void ipcp_resetci __P((fsm *)); /* Reset our CI */
-static int ipcp_cilen __P((fsm *)); /* Return length of our CI */
-static void ipcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */
-static int ipcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */
-static int ipcp_nakci __P((fsm *, u_char *, int, int));/* Peer nak'd our CI */
-static int ipcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */
-static int ipcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */
-static void ipcp_up __P((fsm *)); /* We're UP */
-static void ipcp_down __P((fsm *)); /* We're DOWN */
-static void ipcp_finished __P((fsm *)); /* Don't need lower layer */
+static void ipcp_resetci (fsm *); /* Reset our CI */
+static int ipcp_cilen (fsm *); /* Return length of our CI */
+static void ipcp_addci (fsm *, u_char *, int *); /* Add our CI */
+static int ipcp_ackci (fsm *, u_char *, int); /* Peer ack'd our CI */
+static int ipcp_nakci (fsm *, u_char *, int, int);/* Peer nak'd our CI */
+static int ipcp_rejci (fsm *, u_char *, int); /* Peer rej'd our CI */
+static int ipcp_reqci (fsm *, u_char *, int *, int); /* Rcv CI */
+static void ipcp_up (fsm *); /* We're UP */
+static void ipcp_down (fsm *); /* We're DOWN */
+static void ipcp_finished (fsm *); /* Don't need lower layer */
fsm ipcp_fsm[NUM_PPP]; /* IPCP fsm structure */
/*
* Command-line options.
*/
-static int setvjslots __P((char **));
-static int setdnsaddr __P((char **));
-static int setwinsaddr __P((char **));
-static int setnetmask __P((char **));
-int setipaddr __P((char *, char **, int));
-static void printipaddr __P((option_t *, void (*)(void *, char *,...),void *));
+static int setvjslots (char **);
+static int setdnsaddr (char **);
+static int setwinsaddr (char **);
+static int setnetmask (char **);
+int setipaddr (char *, char **, int);
+static void printipaddr (option_t *, void (*)(void *, char *,...),void *);
static option_t ipcp_option_list[] = {
{ "noip", o_bool, &ipcp_protent.enabled_flag,
{ "noipdefault", o_bool, &disable_defaultip,
"Don't use name for default IP adrs", 1 },
- { "ms-dns", 1, (void *)setdnsaddr,
- "DNS address for the peer's use" },
- { "ms-wins", 1, (void *)setwinsaddr,
- "Nameserver for SMB over TCP/IP for peer" },
+ { "ms-dns", o_special, (void *)setdnsaddr,
+ "DNS address for the peer's use", OPT_A2LIST },
+ { "ms-wins", o_special, (void *)setwinsaddr,
+ "Nameserver for SMB over TCP/IP for peer", OPT_A2LIST },
{ "ipcp-restart", o_int, &ipcp_fsm[0].timeouttime,
"Set timeout for IPCP", OPT_PRIO },
/*
* Protocol entry points from main code.
*/
-static void ipcp_init __P((int));
-static void ipcp_open __P((int));
-static void ipcp_close __P((int, char *));
-static void ipcp_lowerup __P((int));
-static void ipcp_lowerdown __P((int));
-static void ipcp_input __P((int, u_char *, int));
-static void ipcp_protrej __P((int));
-static int ipcp_printpkt __P((u_char *, int,
- void (*) __P((void *, char *, ...)), void *));
-static void ip_check_options __P((void));
-static int ip_demand_conf __P((int));
-static int ip_active_pkt __P((u_char *, int));
-static void create_resolv __P((u_int32_t, u_int32_t));
+static void ipcp_init (int);
+static void ipcp_open (int);
+static void ipcp_close (int, char *);
+static void ipcp_lowerup (int);
+static void ipcp_lowerdown (int);
+static void ipcp_input (int, u_char *, int);
+static void ipcp_protrej (int);
+static int ipcp_printpkt (u_char *, int,
+ void (*) (void *, char *, ...), void *);
+static void ip_check_options (void);
+static int ip_demand_conf (int);
+static int ip_active_pkt (u_char *, int);
+static void create_resolv (u_int32_t, u_int32_t);
struct protent ipcp_protent = {
PPP_IPCP,
ip_active_pkt
};
-static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t));
-static void ipcp_script __P((char *, int)); /* Run an up/down script */
-static void ipcp_script_done __P((void *));
+static void ipcp_clear_addrs (int, u_int32_t, u_int32_t);
+static void ipcp_script (char *, int); /* Run an up/down script */
+static void ipcp_script_done (void *);
/*
* Lengths of configuration options.
* Make a string representation of a network IP address.
*/
char *
-ip_ntoa(ipaddr)
-u_int32_t ipaddr;
+ip_ntoa(u_int32_t ipaddr)
{
static char b[64];
* setvjslots - set maximum number of connection slots for VJ compression
*/
static int
-setvjslots(argv)
- char **argv;
+setvjslots(char **argv)
{
int value;
* setdnsaddr - set the dns address(es)
*/
static int
-setdnsaddr(argv)
- char **argv;
+setdnsaddr(char **argv)
{
u_int32_t dns;
struct hostent *hp;
* the caller to the existing WINS server on a Windows NT platform.
*/
static int
-setwinsaddr(argv)
- char **argv;
+setwinsaddr(char **argv)
{
u_int32_t wins;
struct hostent *hp;
* Not static so that plugins can call it to set the addresses
*/
int
-setipaddr(arg, argv, doit)
- char *arg;
- char **argv;
- int doit;
+setipaddr(char *arg, char **argv, int doit)
{
struct hostent *hp;
char *colon;
}
static void
-printipaddr(opt, printer, arg)
- option_t *opt;
- void (*printer) __P((void *, char *, ...));
- void *arg;
+printipaddr(option_t *opt, void (*printer) (void *, char *, ...), void *arg)
{
ipcp_options *wo = &ipcp_wantoptions[0];
* setnetmask - set the netmask to be used on the interface.
*/
static int
-setnetmask(argv)
- char **argv;
+setnetmask(char **argv)
{
u_int32_t mask;
int n;
}
int
-parse_dotted_ip(p, vp)
- char *p;
- u_int32_t *vp;
+parse_dotted_ip(char *p, u_int32_t *vp)
{
int n;
u_int32_t v, b;
* ipcp_init - Initialize IPCP.
*/
static void
-ipcp_init(unit)
- int unit;
+ipcp_init(int unit)
{
fsm *f = &ipcp_fsm[unit];
ipcp_options *wo = &ipcp_wantoptions[unit];
* ipcp_open - IPCP is allowed to come up.
*/
static void
-ipcp_open(unit)
- int unit;
+ipcp_open(int unit)
{
fsm_open(&ipcp_fsm[unit]);
ipcp_is_open = 1;
* ipcp_close - Take IPCP down.
*/
static void
-ipcp_close(unit, reason)
- int unit;
- char *reason;
+ipcp_close(int unit, char *reason)
{
fsm_close(&ipcp_fsm[unit], reason);
}
* ipcp_lowerup - The lower layer is up.
*/
static void
-ipcp_lowerup(unit)
- int unit;
+ipcp_lowerup(int unit)
{
fsm_lowerup(&ipcp_fsm[unit]);
}
* ipcp_lowerdown - The lower layer is down.
*/
static void
-ipcp_lowerdown(unit)
- int unit;
+ipcp_lowerdown(int unit)
{
fsm_lowerdown(&ipcp_fsm[unit]);
}
* ipcp_input - Input IPCP packet.
*/
static void
-ipcp_input(unit, p, len)
- int unit;
- u_char *p;
- int len;
+ipcp_input(int unit, u_char *p, int len)
{
fsm_input(&ipcp_fsm[unit], p, len);
}
* Pretend the lower layer went down, so we shut up.
*/
static void
-ipcp_protrej(unit)
- int unit;
+ipcp_protrej(int unit)
{
fsm_lowerdown(&ipcp_fsm[unit]);
}
* Called by fsm_sconfreq, Send Configure Request.
*/
static void
-ipcp_resetci(f)
- fsm *f;
+ipcp_resetci(fsm *f)
{
ipcp_options *wo = &ipcp_wantoptions[f->unit];
ipcp_options *go = &ipcp_gotoptions[f->unit];
* Called by fsm_sconfreq, Send Configure Request.
*/
static int
-ipcp_cilen(f)
- fsm *f;
+ipcp_cilen(fsm *f)
{
ipcp_options *go = &ipcp_gotoptions[f->unit];
ipcp_options *wo = &ipcp_wantoptions[f->unit];
* Called by fsm_sconfreq, Send Configure Request.
*/
static void
-ipcp_addci(f, ucp, lenp)
- fsm *f;
- u_char *ucp;
- int *lenp;
+ipcp_addci(fsm *f, u_char *ucp, int *lenp)
{
ipcp_options *go = &ipcp_gotoptions[f->unit];
int len = *lenp;
* 1 - Ack was good.
*/
static int
-ipcp_ackci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipcp_ackci(fsm *f, u_char *p, int len)
{
ipcp_options *go = &ipcp_gotoptions[f->unit];
u_short cilen, citype, cishort;
* 1 - Nak was good.
*/
static int
-ipcp_nakci(f, p, len, treat_as_reject)
- fsm *f;
- u_char *p;
- int len;
- int treat_as_reject;
+ipcp_nakci(fsm *f, u_char *p, int len, int treat_as_reject)
{
ipcp_options *go = &ipcp_gotoptions[f->unit];
u_char cimaxslotindex, cicflag;
* Callback from fsm_rconfnakrej.
*/
static int
-ipcp_rejci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipcp_rejci(fsm *f, u_char *p, int len)
{
ipcp_options *go = &ipcp_gotoptions[f->unit];
u_char cimaxslotindex, ciflag, cilen;
* CONFNAK; returns CONFREJ if it can't return CONFACK.
*/
static int
-ipcp_reqci(f, inp, len, reject_if_disagree)
- fsm *f;
- u_char *inp; /* Requested CIs */
- int *len; /* Length of requested CIs */
- int reject_if_disagree;
+ipcp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree)
{
ipcp_options *wo = &ipcp_wantoptions[f->unit];
ipcp_options *ho = &ipcp_hisoptions[f->unit];
* and assign appropriate defaults.
*/
static void
-ip_check_options()
+ip_check_options(void)
{
struct hostent *hp;
u_int32_t local;
* IPCP were up, for use with dial-on-demand.
*/
static int
-ip_demand_conf(u)
- int u;
+ip_demand_conf(int u)
{
ipcp_options *wo = &ipcp_wantoptions[u];
* Configure the IP network interface appropriately and bring it up.
*/
static void
-ipcp_up(f)
- fsm *f;
+ipcp_up(fsm *f)
{
u_int32_t mask;
ipcp_options *ho = &ipcp_hisoptions[f->unit];
ipcp_options *go = &ipcp_gotoptions[f->unit];
ipcp_options *wo = &ipcp_wantoptions[f->unit];
+ int ifindex;
IPCPDEBUG(("ipcp: up"));
}
#endif
+ ifindex = if_nametoindex(ifname);
+
/* run the pre-up script, if any, and wait for it to finish */
ipcp_script(_PATH_IPPREUP, 1);
+ /* check if preup script renamed the interface */
+ if (!if_indextoname(ifindex, ifname)) {
+ error("Interface index %d failed to get renamed by a pre-up script", ifindex);
+ ipcp_close(f->unit, "Interface configuration failed");
+ return;
+ }
+
/* bring the interface up for IP */
if (!sifup(f->unit)) {
if (debug)
* and delete routes through it.
*/
static void
-ipcp_down(f)
- fsm *f;
+ipcp_down(fsm *f)
{
IPCPDEBUG(("ipcp: down"));
/* XXX a bit IPv4-centric here, we only need to get the stats
* proxy arp entries, etc.
*/
static void
-ipcp_clear_addrs(unit, ouraddr, hisaddr)
- int unit;
- u_int32_t ouraddr; /* local address */
- u_int32_t hisaddr; /* remote address */
+ipcp_clear_addrs(int unit, u_int32_t ouraddr, u_int32_t hisaddr)
{
if (proxy_arp_set[unit]) {
cifproxyarp(unit, hisaddr);
* ipcp_finished - possibly shut down the lower layers.
*/
static void
-ipcp_finished(f)
- fsm *f;
+ipcp_finished(fsm *f)
{
if (ipcp_is_open) {
ipcp_is_open = 0;
* has finished.
*/
static void
-ipcp_script_done(arg)
- void *arg;
+ipcp_script_done(void *arg)
{
ipcp_script_pid = 0;
switch (ipcp_script_state) {
* interface-name tty-name speed local-IP remote-IP.
*/
static void
-ipcp_script(script, wait)
- char *script;
- int wait;
+ipcp_script(char *script, int wait)
{
char strspeed[32], strlocal[32], strremote[32];
char *argv[8];
* create_resolv - create the replacement resolv.conf file
*/
static void
-create_resolv(peerdns1, peerdns2)
- u_int32_t peerdns1, peerdns2;
+create_resolv(u_int32_t peerdns1, u_int32_t peerdns2)
{
FILE *f;
};
static int
-ipcp_printpkt(p, plen, printer, arg)
- u_char *p;
- int plen;
- void (*printer) __P((void *, char *, ...));
- void *arg;
+ipcp_printpkt(u_char *p, int plen,
+ void (*printer) (void *, char *, ...), void *arg)
{
int code, id, len, olen;
u_char *pstart, *optend;
#define get_tcpflags(x) (((unsigned char *)(x))[13])
static int
-ip_active_pkt(pkt, len)
- u_char *pkt;
- int len;
+ip_active_pkt(u_char *pkt, int len)
{
u_char *tcp;
int hlen;
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