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Implement ddns-fwd-name and ddns-rev-name subexpressions.

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This commit is contained in:
Ted Lemon 1999-10-05 19:01:33 +00:00
parent 41a7cabfb7
commit 06a8567cf8
3 changed files with 103 additions and 4 deletions
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18
common/parse.c
View File

@ -22,7 +22,7 @@
#ifndef lint
static char copyright[] =
"$Id: parse.c,v 1.40 1999/10/01 03:17:59 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
"$Id: parse.c,v 1.41 1999/10/05 19:01:33 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@ -2037,6 +2037,22 @@ int parse_non_binary (expr, cfile, lose, context)
(*expr) -> op = expr_host_decl_name;
break;
case DDNS_FWD_NAME:
token = next_token (&val, cfile);
if (!expression_allocate (expr,
"parse_expression: DDNS_FWD_NAME"))
log_fatal ("can't allocate expression");
(*expr) -> op = expr_dns_fwd_name;
break;
case DDNS_REV_NAME:
token = next_token (&val, cfile);
if (!expression_allocate (expr,
"parse_expression: DDNS_REV_NAME"))
log_fatal ("can't allocate expression");
(*expr) -> op = expr_dns_rev_name;
break;
case PACKET:
token = next_token (&val, cfile);
if (!expression_allocate (expr, "parse_expression: PACKET"))

87
common/tree.c
View File

@ -22,7 +22,7 @@
#ifndef lint
static char copyright[] =
"$Id: tree.c,v 1.53 1999/10/04 23:17:37 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998 The Internet Software Consortium. All rights reserved.\n";
"$Id: tree.c,v 1.54 1999/10/05 19:01:32 mellon Exp $ Copyright (c) 1995, 1996, 1997, 1998 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
@ -619,6 +619,8 @@ int evaluate_boolean_expression (result, packet, lease, in_options,
case expr_host_decl_name:
case expr_config_option:
case expr_leased_address:
case expr_dns_fwd_name:
case expr_dns_rev_name:
log_error ("Data opcode in evaluate_boolean_expression: %d",
expr -> op);
return 0;
@ -1253,7 +1255,8 @@ int evaluate_data_expression (result, packet, lease,
if (buffer_allocate (&result -> buffer, result -> len + 1,
"host-decl-name")) {
result -> data = &result -> buffer -> data [0];
strcpy ((char *)&result -> data [0], lease -> host -> name);
strcpy ((char *)&result -> data [0],
lease -> host -> name);
result -> terminated = 1;
} else {
log_error ("data: host-decl-name: no memory.");
@ -1264,6 +1267,50 @@ int evaluate_data_expression (result, packet, lease,
#endif
return 1;
case expr_dns_fwd_name:
if (!lease || !lease -> ddns_fwd_name) {
log_error ("data: dns-fwd-name: not available");
return 0;
}
result -> len = strlen (lease -> ddns_fwd_name);
if (buffer_allocate (&result -> buffer, result -> len + 1,
"ddns-fwd-name")) {
result -> data = &result -> buffer -> data [0];
strcpy ((char *)&result -> data [0],
lease -> ddns_fwd_name);
result -> terminated = 1;
} else {
log_error ("data: ddns-fwd-name: no memory.");
return 0;
}
#if defined (DEBUG_EXPRESSIONS)
log_info ("data: ddns-fwd-name = %s",
lease -> ddns_fwd_name);
#endif
return 1;
case expr_dns_rev_name:
if (!lease || !lease -> ddns_rev_name) {
log_error ("data: ddns-rev-name: not available");
return 0;
}
result -> len = strlen (lease -> ddns_rev_name);
if (buffer_allocate (&result -> buffer, result -> len + 1,
"ddns-rev-name")) {
result -> data = &result -> buffer -> data [0];
strcpy ((char *)&result -> data [0],
lease -> ddns_rev_name);
result -> terminated = 1;
} else {
log_error ("data: ddns-rev-name: no memory.");
return 0;
}
#if defined (DEBUG_EXPRESSIONS)
log_info ("data: ddns-rev-name = %s",
lease -> ddns_rev_name);
#endif
return 1;
case expr_check:
case expr_equal:
case expr_and:
@ -1629,6 +1676,20 @@ void expression_dereference (eptr, name)
(&expr -> data.reverse.buffer, name);
break;
case expr_dns_update:
if (expr -> data.dns_update.type)
expression_dereference (&expr -> data.dns_update.type,
name);
if (expr -> data.dns_update.expr1)
expression_dereference (&expr -> data.dns_update.type,
name);
if (expr -> data.dns_update.expr2)
expression_dereference (&expr -> data.dns_update.type,
name);
if (expr -> data.dns_update.ttl)
expression_dereference (&expr -> data.dns_update.type,
name);
/* No subexpressions. */
case expr_leased_address:
case expr_lease_time:
@ -1638,6 +1699,8 @@ void expression_dereference (eptr, name)
case expr_hardware:
case expr_exists:
case expr_known:
case expr_dns_fwd_name:
case expr_dns_rev_name:
break;
default:
@ -1721,7 +1784,9 @@ int is_data_expression (expr)
expr -> op == expr_pick_first_value ||
expr -> op == expr_host_decl_name ||
expr -> op == expr_leased_address ||
expr -> op == expr_config_option);
expr -> op == expr_config_option ||
expr -> op == expr_dns_fwd_name ||
expr -> op == expr_dns_rev_name);
}
int is_numeric_expression (expr)
@ -1770,6 +1835,9 @@ static int op_val (op)
case expr_config_option:
case expr_leased_address:
case expr_lease_time:
case expr_dns_update:
case expr_dns_fwd_name:
case expr_dns_rev_name:
return 100;
case expr_equal:
@ -1827,6 +1895,9 @@ enum expression_context op_context (op)
case expr_config_option:
case expr_leased_address:
case expr_lease_time:
case expr_dns_update:
case expr_dns_fwd_name:
case expr_dns_rev_name:
return context_any;
case expr_equal:
@ -2177,6 +2248,16 @@ int write_expression (file, expr, col, indent)
")");
break;
case expr_dns_fwd_name:
col = token_print_indent (file, col, indent, "", "",
"dns-fwd-name");
break;
case expr_dns_rev_name:
col = token_print_indent (file, col, indent, "", "",
"dns-rev-name");
break;
default:
log_fatal ("invalid expression type in print_expression: %d",
expr -> op);

2
includes/tree.h
View File

@ -92,6 +92,8 @@ enum expr_op {
expr_lease_time,
expr_dns_update,
expr_static,
expr_dns_fwd_name,
expr_dns_rev_name,
};
struct expression {