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Commit fa392aea authored by Ted Lemon's avatar Ted Lemon
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Parse TSIG keys and DNS zones.

parent 0cae26a7
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common/parse.c
View file @ fa392aea
......@@ -22,7 +22,7 @@
#ifndef lint
static char copyright[] =
"$Id: parse.c,v 1.64 2000/02/15 19:41:01 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
"$Id: parse.c,v 1.65 2000/03/06 23:17:24 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
......@@ -159,6 +159,10 @@ char *parse_host_name (cfile)
token = next_token (&val, cfile);
} while (token == DOT);
/* Should be at least one token. */
if (!len)
return (char *)0;
/* Assemble the hostname together into a string. */
if (!(s = (char *)dmalloc (len, MDL)))
log_fatal ("can't allocate space for hostname.");
......@@ -879,7 +883,7 @@ void parse_option_space_decl (cfile)
universes = ua;
}
universes [nu -> index] = nu;
nu -> hash = new_hash ();
nu -> hash = new_hash (0, 0);
if (!nu -> hash)
log_fatal ("Can't allocate %s option hash table.", nu -> name);
add_hash (&universe_hash,
......@@ -1212,6 +1216,9 @@ int parse_executable_statement (result, cfile, lose, case_context)
struct option_cache *cache;
int known;
int flag;
struct dns_zone *zone;
struct tsig_key *tkey;
isc_result_t status;
token = peek_token (&val, cfile);
switch (token) {
......@@ -1530,6 +1537,87 @@ int parse_executable_statement (result, cfile, lose, case_context)
parse_semi (cfile);
break;
/* Not really a statement, but we parse it here anyway
because it's appropriate for all DHCP agents with
parsers. */
case ZONE:
token = next_token (&val, cfile);
if (!dns_zone_allocate (&zone, MDL))
log_fatal ("no memory for new zone.");
zone -> name = parse_host_name (cfile);
if (!zone -> name) {
badzone:
*lose = 1;
skip_to_semi (cfile);
dns_zone_dereference (&zone, MDL);
return 0;
}
token = next_token (&val, cfile);
if (token != LBRACE) {
parse_warn (cfile, "expecting left brace");
goto badzone;
}
if (!parse_zone (zone, cfile))
goto badzone;
token = next_token (&val, cfile);
if (token != RBRACE) {
parse_warn (cfile, "expecting right brace.");
goto badzone;
}
status = enter_dns_zone (zone);
if (status == ISC_R_NOMEMORY)
log_fatal ("no memory to hash dns zone %s",
zone -> name);
if (status != ISC_R_SUCCESS) {
if (parse_semi (cfile))
parse_warn (cfile, "tsig key %s: %s",
tkey -> name,
isc_result_totext (status));
dns_zone_dereference (&zone, MDL);
return 0;
}
return 1;
/* Also not really a statement, but same idea as above. */
case TSIG_KEY:
token = next_token (&val, cfile);
token = next_token (&val, cfile);
if (token != STRING) {
parse_warn (cfile, "expecting key name string.");
*lose = 1;
skip_to_semi (cfile);
return 0;
}
if (!tsig_key_allocate (&tkey, MDL))
log_fatal ("no memory for tsig key");
tkey -> name = dmalloc (strlen (val) + 1, MDL);
if (!tkey -> name)
log_fatal ("no memory for tsig key name.");
strcpy (tkey -> name, val);
tkey -> algorithm = parse_host_name (cfile);
if (!tkey -> algorithm) {
parse_warn (cfile, "expecting key algorithim name.");
badtkey:
skip_to_semi (cfile);
tsig_key_dereference (&tkey, MDL);
return 0;
}
if (!parse_cshl (&tkey -> key, cfile))
goto badtkey;
status = enter_tsig_key (tkey);
if (status == ISC_R_NOMEMORY)
log_fatal ("no memory to hash tsig key %s",
tkey -> name);
if (status != ISC_R_SUCCESS) {
if (parse_semi (cfile))
parse_warn (cfile, "tsig key %s: %s",
tkey -> name,
isc_result_totext (status));
tsig_key_dereference (&tkey, MDL);
return 0;
}
return parse_semi (cfile);
default:
if (config_universe && is_identifier (token)) {
option = ((struct option *)
......@@ -1549,6 +1637,106 @@ int parse_executable_statement (result, cfile, lose, case_context)
return 1;
}
/* zone-statements :== zone-statement |
zone-statement zone-statements
zone-statement :==
PRIMARY ip-addresses SEMI |
SECONDARY ip-addresses SEMI |
TSIG_KEY STRING SEMI
ip-addresses = ip-addr-or-hostname |
ip-addr-or-hostname COMMA ip-addresses */
int parse_zone (struct dns_zone *zone, struct parse *cfile)
{
int token;
const char *val;
struct option_cache *oc;
int done = 0;
do {
token = peek_token (&val, cfile);
switch (token) {
case PRIMARY:
if (zone -> primary) {
parse_warn (cfile,
"more than one primary.");
skip_to_semi (cfile);
return 0;
}
if (!option_cache_allocate (&zone -> primary, MDL))
log_fatal ("can't allocate primary option cache.");
oc = zone -> primary;
goto consemup;
case SECONDARY:
if (zone -> secondary) {
parse_warn (cfile, "more than one secondary.");
skip_to_semi (cfile);
return 0;
}
if (!option_cache_allocate (&zone -> secondary, MDL))
log_fatal ("can't allocate secondary.");
oc = zone -> secondary;
consemup:
token = next_token (&val, cfile);
do {
struct expression *expr = (struct expression *)0;
if (!parse_ip_addr_or_hostname (&expr, cfile, 0)) {
parse_warn (cfile,
"expecting IP addr or hostname.");
skip_to_semi (cfile);
return 0;
}
if (oc -> expression) {
struct expression *old =
(struct expression *)0;
expression_reference (&old,
oc -> expression,
MDL);
expression_dereference (&oc -> expression,
MDL);
if (!make_concat (&oc -> expression,
old, expr))
log_fatal ("no memory for concat.");
expression_dereference (&expr, MDL);
expression_dereference (&old, MDL);
} else {
expression_reference (&oc -> expression,
expr, MDL);
expression_dereference (&expr, MDL);
}
token = next_token (&val, cfile);
} while (token == COMMA);
if (token != SEMI) {
parse_warn (cfile, "expecting semicolon.");
skip_to_semi (cfile);
return 0;
}
break;
case TSIG_KEY:
token = next_token (&val, cfile);
token = next_token (&val, cfile);
if (token != STRING) {
parse_warn (cfile, "expecting key name.");
skip_to_semi (cfile);
return 0;
}
if (tsig_key_lookup (&zone -> key, val) != ISC_R_SUCCESS)
parse_warn (cfile, "unknown key %s", val);
if (!parse_semi (cfile))
return 0;
break;
default:
done = 1;
break;
}
} while (!done);
return 1;
}
/*
* on-statement :== event-types LBRACE executable-statements RBRACE
* event-types :== event-type OR event-types |
......
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