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-rw-r--r--contrib/isc-dhcp/client/clparse.c7
-rw-r--r--contrib/isc-dhcp/client/dhclient.c231
2 files changed, 152 insertions, 86 deletions
diff --git a/contrib/isc-dhcp/client/clparse.c b/contrib/isc-dhcp/client/clparse.c
index 6c12230..8bedf1f 100644
--- a/contrib/isc-dhcp/client/clparse.c
+++ b/contrib/isc-dhcp/client/clparse.c
@@ -42,7 +42,8 @@
#ifndef lint
static char copyright[] =
-"$Id: clparse.c,v 1.13.2.4 1999/03/29 21:21:37 mellon Exp $ Copyright (c) 1997 The Internet Software Consortium. All rights reserved.\n";
+"$Id: clparse.c,v 1.13.2.5 2000/07/20 05:06:40 mellon Exp $ Copyright (c) 1997 The Internet Software Consortium. All rights reserved.\n"
+"$FreeBSD$\n";
#endif /* not lint */
#include "dhcpd.h"
@@ -50,6 +51,8 @@ static char copyright[] =
struct client_config top_level_config;
+char client_script_name [] = "/sbin/dhclient-script";
+
/* client-conf-file :== client-declarations EOF
client-declarations :== <nil>
| client-declaration
@@ -79,7 +82,7 @@ int read_client_conf ()
top_level_config.backoff_cutoff = 15;
top_level_config.initial_interval = 3;
top_level_config.bootp_policy = ACCEPT;
- top_level_config.script_name = "/sbin/dhclient-script";
+ top_level_config.script_name = client_script_name;
top_level_config.requested_options
[top_level_config.requested_option_count++] =
DHO_SUBNET_MASK;
diff --git a/contrib/isc-dhcp/client/dhclient.c b/contrib/isc-dhcp/client/dhclient.c
index eeb241b..e31df70 100644
--- a/contrib/isc-dhcp/client/dhclient.c
+++ b/contrib/isc-dhcp/client/dhclient.c
@@ -56,7 +56,7 @@
#ifndef lint
static char ocopyright[] =
-"$Id: dhclient.c,v 1.44.2.44 2000/01/26 12:51:11 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n"
+"$Id: dhclient.c,v 1.44.2.45 2000/07/20 05:06:41 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n"
"$FreeBSD$\n";
#endif /* not lint */
@@ -141,6 +141,10 @@ int main (argc, argv, envp)
no_daemon = 1;
} else if (!strcmp (argv [i], "-D")) {
save_scripts = 1;
+ } else if (!strcmp (argv [i], "-cf")) {
+ if (++i == argc)
+ usage (s);
+ path_dhclient_conf = argv [i];
} else if (!strcmp (argv [i], "-pf")) {
if (++i == argc)
usage (s);
@@ -1907,38 +1911,24 @@ void script_init (ip, reason, medium)
char *reason;
struct string_list *medium;
{
- int fd;
-#ifndef HAVE_MKSTEMP
-
- do {
-#endif
- strcpy (scriptName, "/tmp/dcsXXXXXX");
-#ifdef HAVE_MKSTEMP
- fd = mkstemp (scriptName);
-#else
- if (!mktemp (scriptName))
- error ("can't create temporary client script %s: %m",
- scriptName);
- fd = open (scriptName, O_EXCL | O_CREAT | O_WRONLY, 0600);
- } while (fd < 0 && errno == EEXIST);
-#endif
- if (fd < 0)
- error ("can't create temporary script %s: %m", scriptName);
+ struct string_list *sl, *next;
- scriptFile = fdopen (fd, "w");
- if (!scriptFile)
- error ("can't write script file: %m");
- fprintf (scriptFile, "#!/bin/sh\n\n");
if (ip) {
- fprintf (scriptFile, "interface=\"%s\"\n", ip -> name);
- fprintf (scriptFile, "export interface\n");
- }
- if (medium) {
- fprintf (scriptFile, "medium=\"%s\"\n", medium -> string);
- fprintf (scriptFile, "export medium\n");
+ for (sl = ip -> client -> env; sl; sl = next) {
+ next = sl -> next;
+ dfree (sl, "script_init");
+ }
+ ip -> client -> env = (struct string_list *)0;
+ ip -> client -> envc = 0;
+
+ client_envadd (ip -> client, "", "interface", "%s",
+ ip -> name);
+ if (medium)
+ client_envadd (ip -> client,
+ "", "medium", "%s", medium -> string);
+
+ client_envadd (ip -> client, "", "reason", "%s", reason);
}
- fprintf (scriptFile, "reason=\"%s\"\n", reason);
- fprintf (scriptFile, "export reason\n");
}
void script_write_params (ip, prefix, lease)
@@ -1950,9 +1940,8 @@ void script_write_params (ip, prefix, lease)
u_int8_t dbuf [1500];
int len;
- fprintf (scriptFile, "%sip_address=\"%s\"\n",
- prefix, piaddr (lease -> address));
- fprintf (scriptFile, "export %sip_address\n", prefix);
+ client_envadd (ip -> client,
+ prefix, "ip_address", "%s", piaddr (lease -> address));
/* For the benefit of Linux (and operating systems which may
have similar needs), compute the network address based on
@@ -1973,36 +1962,26 @@ void script_write_params (ip, prefix, lease)
subnet = subnet_number (lease -> address, netmask);
if (subnet.len) {
- fprintf (scriptFile, "%snetwork_number=\"%s\";\n",
- prefix, piaddr (subnet));
- fprintf (scriptFile, "export %snetwork_number\n",
- prefix);
+ client_envadd (ip -> client, prefix, "network_number",
+ "%s", piaddr (subnet));
if (!lease -> options [DHO_BROADCAST_ADDRESS].len) {
broadcast = broadcast_addr (subnet, netmask);
if (broadcast.len) {
- fprintf (scriptFile,
- "%s%s=\"%s\";\n", prefix,
- "broadcast_address",
- piaddr (broadcast));
- fprintf (scriptFile,
- "export %s%s\n", prefix,
- "broadcast_address");
+ client_envadd (ip -> client,
+ prefix, "broadcast_address",
+ "%s", piaddr (subnet));
}
}
}
}
- if (lease -> filename) {
- fprintf (scriptFile, "%sfilename=\"%s\";\n",
- prefix, lease -> filename);
- fprintf (scriptFile, "export %sfilename\n", prefix);
- }
- if (lease -> server_name) {
- fprintf (scriptFile, "%sserver_name=\"%s\";\n",
- prefix, lease -> server_name);
- fprintf (scriptFile, "export %sserver_name\n", prefix);
- }
+ if (lease -> filename)
+ client_envadd (ip -> client,
+ prefix, "filename", "%s", lease -> filename);
+ if (lease -> server_name)
+ client_envadd (ip -> client, prefix, "server_name",
+ "%s", lease -> server_name);
for (i = 0; i < 256; i++) {
u_int8_t *dp;
@@ -2075,57 +2054,141 @@ void script_write_params (ip, prefix, lease)
len = 0;
}
if (len) {
- char *s = dhcp_option_ev_name (&dhcp_options [i]);
-
- fprintf (scriptFile, "%s%s=\"%s\"\n", prefix, s,
- pretty_print_option (i, dp, len, 0, 0));
- fprintf (scriptFile, "export %s%s\n", prefix, s);
+ char name [256];
+ if (dhcp_option_ev_name (name, sizeof name,
+ &dhcp_options [i])) {
+ client_envadd (ip -> client, prefix, name, "%s",
+ (pretty_print_option (i, dp,
+ len, 0, 0)));
+ }
}
}
- fprintf (scriptFile, "%sexpiry=\"%d\"\n",
- prefix, (int)lease -> expiry); /* XXX */
- fprintf (scriptFile, "export %sexpiry\n", prefix);
+ client_envadd (ip -> client,
+ prefix, "expiry", "%d", (int)(lease -> expiry));
}
int script_go (ip)
struct interface_info *ip;
{
int rval;
+ char *scriptName;
+ char *argv [2];
+ char **envp;
+ char *epp [3];
+ char reason [] = "REASON=NBI";
+ static char client_path [] = CLIENT_PATH;
+ int i;
+ struct string_list *sp, *next;
+ int pid, wpid, wstatus;
- if (ip)
- fprintf (scriptFile, "%s\n",
- ip -> client -> config -> script_name);
- else
- fprintf (scriptFile, "%s\n",
- top_level_config.script_name);
- fprintf (scriptFile, "exit $?\n");
- fclose (scriptFile);
- chmod (scriptName, 0700);
- rval = system (scriptName);
- if (!save_scripts)
- unlink (scriptName);
- return rval;
+ if (ip) {
+ scriptName = ip -> client -> config -> script_name;
+ envp = dmalloc ((ip -> client -> envc + 2) * sizeof (char *),
+ "script_go");
+ if (!envp) {
+ error ("No memory for client script environment.");
+ return 0;
+ }
+ i = 0;
+ for (sp = ip -> client -> env; sp; sp = sp -> next) {
+ envp [i++] = sp -> string;
+ }
+ envp [i++] = client_path;
+ envp [i] = (char *)0;
+ } else {
+ scriptName = top_level_config.script_name;
+ epp [0] = reason;
+ epp [1] = client_path;
+ epp [2] = (char *)0;
+ envp = epp;
+ }
+
+ argv [0] = scriptName;
+ argv [1] = (char *)0;
+
+ pid = fork ();
+ if (pid < 0) {
+ error ("fork: %m");
+ wstatus = 0;
+ } else if (pid) {
+ do {
+ wpid = wait (&wstatus);
+ } while (wpid != pid && wpid > 0);
+ if (wpid < 0) {
+ error ("wait: %m");
+ wstatus = 0;
+ }
+ } else {
+ execve (scriptName, argv, envp);
+ error ("execve (%s, ...): %m", scriptName);
+ exit (0);
+ }
+
+ if (ip) {
+ for (sp = ip -> client -> env; sp; sp = next) {
+ next = sp -> next;
+ dfree (sp, "script_go");
+ }
+ ip -> client -> env = (struct string_list *)0;
+ ip -> client -> envc = 0;
+ dfree (envp, "script_go");
+ }
+ return wstatus & 0xff;
}
-char *dhcp_option_ev_name (option)
+void client_envadd (struct client_state *client,
+ const char *prefix, const char *name, const char *fmt, ...)
+{
+ char spbuf [1024];
+ char *s;
+ unsigned len, i;
+ struct string_list *val;
+ va_list list;
+
+ va_start (list, fmt);
+ len = vsnprintf (spbuf, sizeof spbuf, fmt, list);
+ va_end (list);
+
+ val = dmalloc (strlen (prefix) + strlen (name) + 1 /* = */ +
+ len + sizeof *val, "client_envadd");
+ if (!val)
+ return;
+ s = val -> string;
+ strcpy (s, prefix);
+ strcat (s, name);
+ s += strlen (s);
+ *s++ = '=';
+ if (len >= sizeof spbuf) {
+ va_start (list, fmt);
+ vsnprintf (s, len + 1, fmt, list);
+ va_end (list);
+ } else
+ strcpy (s, spbuf);
+ val -> next = client -> env;
+ client -> env = val;
+ client -> envc++;
+}
+
+int dhcp_option_ev_name (buf, buflen, option)
+ char *buf;
+ unsigned buflen;
struct option *option;
{
- static char evbuf [256];
int i;
- if (strlen (option -> name) + 1 > sizeof evbuf)
- error ("option %s name is larger than static buffer.");
for (i = 0; option -> name [i]; i++) {
+ if (i + 1 == buflen)
+ return 0;
if (option -> name [i] == '-')
- evbuf [i] = '_';
+ buf [i] = '_';
else
- evbuf [i] = option -> name [i];
+ buf [i] = option -> name [i];
}
- evbuf [i] = 0;
- return evbuf;
+ buf [i] = 0;
+ return 1;
}
-
+
void go_daemon ()
{
static int state = 0;
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