*/
#ifndef lint
-static char rcsid[] = "$Id: ipcp.c,v 1.33 1998/03/25 03:08:47 paulus Exp $";
+static char rcsid[] = "$Id: ipcp.c,v 1.35 1998/11/07 06:59:26 paulus Exp $";
#endif
/*
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
+#include <arpa/inet.h>
#include "pppd.h"
#include "fsm.h"
ipcp_options ipcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
ipcp_options ipcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
+bool disable_defaultip = 0; /* Don't use hostname for default IP adrs */
+
/* local vars */
static int cis_received[NUM_PPP]; /* # Conf-Reqs received */
static int default_route_set[NUM_PPP]; /* Have set up a default route */
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_script __P((fsm *, char *)); /* Run an up/down script */
static void ipcp_finished __P((fsm *)); /* Don't need lower layer */
fsm ipcp_fsm[NUM_PPP]; /* IPCP fsm structure */
"IPCP" /* String name of protocol */
};
+/*
+ * Command-line options.
+ */
+static int setvjslots __P((char **));
+static int setdnsaddr __P((char **));
+static int setwinsaddr __P((char **));
+
+static option_t ipcp_option_list[] = {
+ { "noip", o_bool, &ipcp_protent.enabled_flag,
+ "Disable IP and IPCP" },
+ { "-ip", o_bool, &ipcp_protent.enabled_flag,
+ "Disable IP and IPCP" },
+ { "novj", o_bool, &ipcp_wantoptions[0].neg_vj,
+ "Disable VJ compression", OPT_A2COPY, &ipcp_allowoptions[0].neg_vj },
+ { "-vj", o_bool, &ipcp_wantoptions[0].neg_vj,
+ "Disable VJ compression", OPT_A2COPY, &ipcp_allowoptions[0].neg_vj },
+ { "novjccomp", o_bool, &ipcp_wantoptions[0].cflag,
+ "Disable VJ connection-ID compression", OPT_A2COPY,
+ &ipcp_allowoptions[0].cflag },
+ { "-vjccomp", o_bool, &ipcp_wantoptions[0].cflag,
+ "Disable VJ connection-ID compression", OPT_A2COPY,
+ &ipcp_allowoptions[0].cflag },
+ { "vj-max-slots", 1, setvjslots,
+ "Set maximum VJ header slots" },
+ { "ipcp-accept-local", o_bool, &ipcp_wantoptions[0].accept_local,
+ "Accept peer's address for us", 1 },
+ { "ipcp-accept-remote", o_bool, &ipcp_wantoptions[0].accept_remote,
+ "Accept peer's address for it", 1 },
+ { "ipparam", o_string, &ipparam,
+ "Set ip script parameter" },
+ { "noipdefault", o_bool, &disable_defaultip,
+ "Don't use name for default IP adrs", 1 },
+ { "ms-dns", 1, setdnsaddr,
+ "DNS address for the peer's use" },
+ { "ms-wins", 1, setwinsaddr,
+ "Nameserver for SMB over TCP/IP for peer" },
+ { "ipcp-restart", o_int, &ipcp_fsm[0].timeouttime,
+ "Set timeout for IPCP" },
+ { "ipcp-max-terminate", o_int, &ipcp_fsm[0].maxtermtransmits,
+ "Set max #xmits for term-reqs" },
+ { "ipcp-max-configure", o_int, &ipcp_fsm[0].maxconfreqtransmits,
+ "Set max #xmits for conf-reqs" },
+ { "ipcp-max-failure", o_int, &ipcp_fsm[0].maxnakloops,
+ "Set max #conf-naks for IPCP" },
+ { "defaultroute", o_bool, &ipcp_wantoptions[0].default_route,
+ "Add default route", OPT_ENABLE|1, &ipcp_allowoptions[0].default_route },
+ { "nodefaultroute", o_bool, &ipcp_allowoptions[0].default_route,
+ "disable defaultroute option", OPT_A2COPY,
+ &ipcp_wantoptions[0].default_route },
+ { "-defaultroute", o_bool, &ipcp_allowoptions[0].default_route,
+ "disable defaultroute option", OPT_A2COPY,
+ &ipcp_wantoptions[0].default_route },
+ { "proxyarp", o_bool, &ipcp_wantoptions[0].proxy_arp,
+ "Add proxy ARP entry", OPT_ENABLE|1, &ipcp_allowoptions[0].proxy_arp },
+ { "noproxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp,
+ "disable proxyarp option", OPT_A2COPY,
+ &ipcp_wantoptions[0].proxy_arp },
+ { "-proxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp,
+ "disable proxyarp option", OPT_A2COPY,
+ &ipcp_wantoptions[0].proxy_arp },
+ { NULL }
+};
+
/*
* Protocol entry points from main code.
*/
NULL,
1,
"IPCP",
+ ipcp_option_list,
ip_check_options,
ip_demand_conf,
ip_active_pkt
};
static void ipcp_clear_addrs __P((int));
+static void ipcp_script __P((char *)); /* Run an up/down script */
+static void ipcp_script_done __P((void *));
/*
* Lengths of configuration options.
#define CODENAME(x) ((x) == CONFACK ? "ACK" : \
(x) == CONFNAK ? "NAK" : "REJ")
+/*
+ * This state variable is used to ensure that we don't
+ * run an ipcp-up/down script while one is already running.
+ */
+static enum script_state {
+ s_down,
+ s_up,
+} ipcp_script_state;
+static pid_t ipcp_script_pid;
/*
* Make a string representation of a network IP address.
return b;
}
+/*
+ * Option parsing.
+ */
+
+/*
+ * setvjslots - set maximum number of connection slots for VJ compression
+ */
+static int
+setvjslots(argv)
+ char **argv;
+{
+ int value;
+
+ if (!int_option(*argv, &value))
+ return 0;
+ if (value < 2 || value > 16) {
+ option_error("vj-max-slots value must be between 2 and 16");
+ return 0;
+ }
+ ipcp_wantoptions [0].maxslotindex =
+ ipcp_allowoptions[0].maxslotindex = value - 1;
+ return 1;
+}
+
+/*
+ * setdnsaddr - set the dns address(es)
+ */
+static int
+setdnsaddr(argv)
+ char **argv;
+{
+ u_int32_t dns;
+ struct hostent *hp;
+
+ dns = inet_addr(*argv);
+ if (dns == -1) {
+ if ((hp = gethostbyname(*argv)) == NULL) {
+ option_error("invalid address parameter '%s' for ms-dns option",
+ *argv);
+ return 0;
+ }
+ dns = *(u_int32_t *)hp->h_addr;
+ }
+
+ /* if there is no primary then update it. */
+ if (ipcp_allowoptions[0].dnsaddr[0] == 0)
+ ipcp_allowoptions[0].dnsaddr[0] = dns;
+
+ /* always set the secondary address value to the same value. */
+ ipcp_allowoptions[0].dnsaddr[1] = dns;
+
+ return (1);
+}
+
+/*
+ * setwinsaddr - set the wins address(es)
+ * This is primrarly used with the Samba package under UNIX or for pointing
+ * the caller to the existing WINS server on a Windows NT platform.
+ */
+static int
+setwinsaddr(argv)
+ char **argv;
+{
+ u_int32_t wins;
+ struct hostent *hp;
+
+ wins = inet_addr(*argv);
+ if (wins == -1) {
+ if ((hp = gethostbyname(*argv)) == NULL) {
+ option_error("invalid address parameter '%s' for ms-wins option",
+ *argv);
+ return 0;
+ }
+ wins = *(u_int32_t *)hp->h_addr;
+ }
+
+ /* if there is no primary then update it. */
+ if (ipcp_allowoptions[0].winsaddr[0] == 0)
+ ipcp_allowoptions[0].winsaddr[0] = wins;
+
+ /* always set the secondary address value to the same value. */
+ ipcp_allowoptions[0].winsaddr[1] = wins;
+
+ return (1);
+}
+
/*
* ipcp_init - Initialize IPCP.
*/
if (demand) {
if (go->ouraddr != wo->ouraddr || ho->hisaddr != wo->hisaddr) {
- if (go->ouraddr != wo->ouraddr)
+ if (go->ouraddr != wo->ouraddr) {
syslog(LOG_WARNING, "Local IP address changed to %s",
ip_ntoa(go->ouraddr));
- if (ho->hisaddr != wo->hisaddr)
+ script_setenv("OLDIPLOCAL", ip_ntoa(wo->ouraddr));
+ wo->ouraddr = go->ouraddr;
+ } else
+ script_unsetenv("OLDIPLOCAL");
+ if (ho->hisaddr != wo->hisaddr) {
syslog(LOG_WARNING, "Remote IP address changed to %s",
ip_ntoa(ho->hisaddr));
+ script_setenv("OLDIPREMOTE", ip_ntoa(wo->hisaddr));
+ wo->hisaddr = ho->hisaddr;
+ } else
+ script_unsetenv("OLDIPREMOTE");
ipcp_clear_addrs(f->unit);
/* Set the interface to the new addresses */
* Execute the ip-up script, like this:
* /etc/ppp/ip-up interface tty speed local-IP remote-IP
*/
- ipcp_script(f, _PATH_IPUP);
-
+ if (ipcp_script_state == s_down && ipcp_script_pid == 0) {
+ ipcp_script_state = s_up;
+ ipcp_script(_PATH_IPUP);
+ }
}
}
/* Execute the ip-down script */
- ipcp_script(f, _PATH_IPDOWN);
+ if (ipcp_script_state == s_up && ipcp_script_pid == 0) {
+ ipcp_script_state = s_down;
+ ipcp_script(_PATH_IPDOWN);
+ }
}
}
+/*
+ * ipcp_script_done - called when the ip-up or ip-down script
+ * has finished.
+ */
+static void
+ipcp_script_done(void *arg)
+{
+ ipcp_script_pid = 0;
+ switch (ipcp_script_state) {
+ case s_up:
+ if (ipcp_fsm[0].state != OPENED) {
+ ipcp_script_state = s_down;
+ ipcp_script(_PATH_IPDOWN);
+ }
+ break;
+ case s_down:
+ if (ipcp_fsm[0].state == OPENED) {
+ ipcp_script_state = s_up;
+ ipcp_script(_PATH_IPUP);
+ }
+ break;
+ }
+}
+
+
/*
* ipcp_script - Execute a script with arguments
* interface-name tty-name speed local-IP remote-IP.
*/
static void
-ipcp_script(f, script)
- fsm *f;
+ipcp_script(script)
char *script;
{
char strspeed[32], strlocal[32], strremote[32];
char *argv[8];
sprintf(strspeed, "%d", baud_rate);
- strcpy(strlocal, ip_ntoa(ipcp_gotoptions[f->unit].ouraddr));
- strcpy(strremote, ip_ntoa(ipcp_hisoptions[f->unit].hisaddr));
+ strcpy(strlocal, ip_ntoa(ipcp_gotoptions[0].ouraddr));
+ strcpy(strremote, ip_ntoa(ipcp_hisoptions[0].hisaddr));
argv[0] = script;
argv[1] = ifname;
argv[5] = strremote;
argv[6] = ipparam;
argv[7] = NULL;
- run_program(script, argv, 0);
+ ipcp_script_pid = run_program(script, argv, 0, ipcp_script_done, NULL);
}
/*
if (olen == CILEN_ADDRS) {
p += 2;
GETLONG(cilong, p);
- printer(arg, "addrs %s", ip_ntoa(htonl(cilong)));
+ printer(arg, "addrs %I", htonl(cilong));
GETLONG(cilong, p);
- printer(arg, " %s", ip_ntoa(htonl(cilong)));
+ printer(arg, " %I", htonl(cilong));
}
break;
case CI_COMPRESSTYPE:
if (olen == CILEN_ADDR) {
p += 2;
GETLONG(cilong, p);
- printer(arg, "addr %s", ip_ntoa(htonl(cilong)));
+ printer(arg, "addr %I", htonl(cilong));
}
break;
case CI_MS_DNS1:
case CI_MS_DNS2:
p += 2;
GETLONG(cilong, p);
- printer(arg, "dns-addr %s", ip_ntoa(htonl(cilong)));
+ printer(arg, "ms-dns %I", htonl(cilong));
break;
case CI_MS_WINS1:
case CI_MS_WINS2:
p += 2;
GETLONG(cilong, p);
- printer(arg, "wins-addr %s", ip_ntoa(htonl(cilong)));
+ printer(arg, "ms-wins %I", htonl(cilong));
break;
}
while (p < optend) {
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