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freebsd-dev/contrib/isc-dhcp/common/print.c
David E. O'Brien 5ad7270f30 Import isc-dhcpd-3.0.1rc11. 
This fixes a security vulnerability in the bundled resolver library.

Requested by:	scottl(re)
2003-01-16 07:04:57 +00:00

1374 lines
29 KiB
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/* print.c
Turn data structures into printable text. */
/*
* Copyright (c) 1995-2002 Internet Software Consortium.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of The Internet Software Consortium nor the names
* of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This software has been written for the Internet Software Consortium
* by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
* To learn more about the Internet Software Consortium, see
* ``http://www.isc.org/''. To learn more about Vixie Enterprises,
* see ``http://www.vix.com''. To learn more about Nominum, Inc., see
* ``http://www.nominum.com''.
*/
#ifndef lint
static char copyright[] =
"$Id: print.c,v 1.53.2.7 2002/11/17 02:26:59 dhankins Exp $ Copyright (c) 1995-2002 The Internet Software Consortium. All rights reserved.\n";
#endif /* not lint */
#include "dhcpd.h"
char *quotify_string (const char *s, const char *file, int line)
{
unsigned len = 0;
const char *sp;
char *buf, *nsp;
for (sp = s; sp && *sp; sp++) {
if (*sp == ' ')
len++;
else if (!isascii (*sp) || !isprint (*sp))
len += 4;
else if (*sp == '"' || *sp == '\\')
len += 2;
else
len++;
}
buf = dmalloc (len + 1, file, line);
if (buf) {
nsp = buf;
for (sp = s; sp && *sp; sp++) {
if (*sp == ' ')
*nsp++ = ' ';
else if (!isascii (*sp) || !isprint (*sp)) {
sprintf (nsp, "\\%03o",
*(const unsigned char *)sp);
nsp += 4;
} else if (*sp == '"' || *sp == '\\') {
*nsp++ = '\\';
*nsp++ = *sp;
} else
*nsp++ = *sp;
}
*nsp++ = 0;
}
return buf;
}
char *quotify_buf (const unsigned char *s, unsigned len,
const char *file, int line)
{
unsigned nulen = 0;
char *buf, *nsp;
int i;
for (i = 0; i < len; i++) {
if (s [i] == ' ')
nulen++;
else if (!isascii (s [i]) || !isprint (s [i]))
nulen += 4;
else if (s [i] == '"' || s [i] == '\\')
nulen += 2;
else
nulen++;
}
buf = dmalloc (nulen + 1, MDL);
if (buf) {
nsp = buf;
for (i = 0; i < len; i++) {
if (s [i] == ' ')
*nsp++ = ' ';
else if (!isascii (s [i]) || !isprint (s [i])) {
sprintf (nsp, "\\%03o", s [i]);
nsp += 4;
} else if (s [i] == '"' || s [i] == '\\') {
*nsp++ = '\\';
*nsp++ = s [i];
} else
*nsp++ = s [i];
}
*nsp++ = 0;
}
return buf;
}
char *print_base64 (const unsigned char *buf, unsigned len,
const char *file, int line)
{
char *s, *b;
unsigned bl;
int i;
unsigned val, extra;
static char to64 [] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
bl = ((len * 4 + 2) / 3) + 1;
b = dmalloc (bl + 1, file, line);
if (!b)
return (char *)0;
i = 0;
s = b;
while (i != len) {
val = buf [i++];
extra = val & 3;
val = val >> 2;
*s++ = to64 [val];
if (i == len) {
*s++ = to64 [extra << 4];
*s++ = '=';
break;
}
val = (extra << 8) + buf [i++];
extra = val & 15;
val = val >> 4;
*s++ = to64 [val];
if (i == len) {
*s++ = to64 [extra << 2];
*s++ = '=';
break;
}
val = (extra << 8) + buf [i++];
extra = val & 0x3f;
val = val >> 6;
*s++ = to64 [val];
*s++ = to64 [extra];
}
if (!len)
*s++ = '=';
*s++ = 0;
if (s > b + bl + 1)
abort ();
return b;
}
char *print_hw_addr (htype, hlen, data)
int htype;
int hlen;
unsigned char *data;
{
static char habuf [49];
char *s;
int i;
if (hlen <= 0)
habuf [0] = 0;
else {
s = habuf;
for (i = 0; i < hlen; i++) {
sprintf (s, "%02x", data [i]);
s += strlen (s);
*s++ = ':';
}
*--s = 0;
}
return habuf;
}
void print_lease (lease)
struct lease *lease;
{
struct tm *t;
char tbuf [32];
log_debug (" Lease %s",
piaddr (lease -> ip_addr));
t = gmtime (&lease -> starts);
strftime (tbuf, sizeof tbuf, "%Y/%m/%d %H:%M:%S", t);
log_debug (" start %s", tbuf);
t = gmtime (&lease -> ends);
strftime (tbuf, sizeof tbuf, "%Y/%m/%d %H:%M:%S", t);
log_debug (" end %s", tbuf);
if (lease -> hardware_addr.hlen)
log_debug (" hardware addr = %s",
print_hw_addr (lease -> hardware_addr.hbuf [0],
lease -> hardware_addr.hlen - 1,
&lease -> hardware_addr.hbuf [1]));
log_debug (" host %s ",
lease -> host ? lease -> host -> name : "<none>");
}
#if defined (DEBUG)
void dump_packet_option (struct option_cache *oc,
struct packet *packet,
struct lease *lease,
struct client_state *client,
struct option_state *in_options,
struct option_state *cfg_options,
struct binding_scope **scope,
struct universe *u, void *foo)
{
const char *name, *dot;
struct data_string ds;
memset (&ds, 0, sizeof ds);
if (u != &dhcp_universe) {
name = u -> name;
dot = ".";
} else {
name = "";
dot = "";
}
if (evaluate_option_cache (&ds, packet, lease, client,
in_options, cfg_options, scope, oc, MDL)) {
log_debug (" option %s%s%s %s;\n",
name, dot, oc -> option -> name,
pretty_print_option (oc -> option,
ds.data, ds.len, 1, 1));
data_string_forget (&ds, MDL);
}
}
void dump_packet (tp)
struct packet *tp;
{
struct dhcp_packet *tdp = tp -> raw;
log_debug ("packet length %d", tp -> packet_length);
log_debug ("op = %d htype = %d hlen = %d hops = %d",
tdp -> op, tdp -> htype, tdp -> hlen, tdp -> hops);
log_debug ("xid = %x secs = %ld flags = %x",
tdp -> xid, (unsigned long)tdp -> secs, tdp -> flags);
log_debug ("ciaddr = %s", inet_ntoa (tdp -> ciaddr));
log_debug ("yiaddr = %s", inet_ntoa (tdp -> yiaddr));
log_debug ("siaddr = %s", inet_ntoa (tdp -> siaddr));
log_debug ("giaddr = %s", inet_ntoa (tdp -> giaddr));
log_debug ("chaddr = %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
((unsigned char *)(tdp -> chaddr)) [0],
((unsigned char *)(tdp -> chaddr)) [1],
((unsigned char *)(tdp -> chaddr)) [2],
((unsigned char *)(tdp -> chaddr)) [3],
((unsigned char *)(tdp -> chaddr)) [4],
((unsigned char *)(tdp -> chaddr)) [5]);
log_debug ("filename = %s", tdp -> file);
log_debug ("server_name = %s", tdp -> sname);
if (tp -> options_valid) {
int i;
for (i = 0; i < tp -> options -> universe_count; i++) {
if (tp -> options -> universes [i]) {
option_space_foreach (tp, (struct lease *)0,
(struct client_state *)0,
(struct option_state *)0,
tp -> options,
&global_scope,
universes [i], 0,
dump_packet_option);
}
}
}
log_debug ("%s", "");
}
#endif
void dump_raw (buf, len)
const unsigned char *buf;
unsigned len;
{
int i;
char lbuf [80];
int lbix = 0;
lbuf [0] = 0;
for (i = 0; i < len; i++) {
if ((i & 15) == 0) {
if (lbix)
log_info (lbuf);
sprintf (lbuf, "%03x:", i);
lbix = 4;
} else if ((i & 7) == 0)
lbuf [lbix++] = ' ';
sprintf (&lbuf [lbix], " %02x", buf [i]);
lbix += 3;
}
log_info (lbuf);
}
void hash_dump (table)
struct hash_table *table;
{
int i;
struct hash_bucket *bp;
if (!table)
return;
for (i = 0; i < table -> hash_count; i++) {
if (!table -> buckets [i])
continue;
log_info ("hash bucket %d:", i);
for (bp = table -> buckets [i]; bp; bp = bp -> next) {
if (bp -> len)
dump_raw (bp -> name, bp -> len);
else
log_info ((const char *)bp -> name);
}
}
}
#define HBLEN 60
#define DECLARE_HEX_PRINTER(x) \
char *print_hex##x (len, data, limit) \
unsigned len; \
const u_int8_t *data; \
unsigned limit; \
{ \
\
static char hex_buf##x [HBLEN + 1]; \
unsigned i; \
\
if (limit > HBLEN) \
limit = HBLEN; \
\
for (i = 0; i < (limit - 2) && i < len; i++) { \
if (!isascii (data [i]) || !isprint (data [i])) { \
for (i = 0; i < limit / 3 && i < len; i++) { \
sprintf (&hex_buf##x [i * 3], \
"%02x:", data [i]); \
} \
hex_buf##x [i * 3 - 1] = 0; \
return hex_buf##x; \
} \
} \
hex_buf##x [0] = '"'; \
i = len; \
if (i > limit - 2) \
i = limit - 2; \
memcpy (&hex_buf##x [1], data, i); \
hex_buf##x [i + 1] = '"'; \
hex_buf##x [i + 2] = 0; \
return hex_buf##x; \
}
DECLARE_HEX_PRINTER (_1)
DECLARE_HEX_PRINTER (_2)
DECLARE_HEX_PRINTER (_3)
#define DQLEN 80
char *print_dotted_quads (len, data)
unsigned len;
const u_int8_t *data;
{
static char dq_buf [DQLEN + 1];
int i;
char *s, *last;
s = &dq_buf [0];
last = s;
i = 0;
do {
sprintf (s, "%d.%d.%d.%d, ",
data [i], data [i + 1], data [i + 2], data [i + 3]);
s += strlen (s);
i += 4;
} while ((s - &dq_buf [0] > DQLEN - 21) &&
i + 3 < len);
if (i == len)
s [-2] = 0;
else
strcpy (s, "...");
return dq_buf;
}
char *print_dec_1 (val)
unsigned long val;
{
static char vbuf [32];
sprintf (vbuf, "%lu", val);
return vbuf;
}
char *print_dec_2 (val)
unsigned long val;
{
static char vbuf [32];
sprintf (vbuf, "%lu", val);
return vbuf;
}
static unsigned print_subexpression PROTO ((struct expression *,
char *, unsigned));
static unsigned print_subexpression (expr, buf, len)
struct expression *expr;
char *buf;
unsigned len;
{
unsigned rv, left;
const char *s;
switch (expr -> op) {
case expr_none:
if (len > 3) {
strcpy (buf, "nil");
return 3;
}
break;
case expr_match:
if (len > 7) {
strcpy (buf, "(match)");
return 7;
}
break;
case expr_check:
rv = 10 + strlen (expr -> data.check -> name);
if (len > rv) {
sprintf (buf, "(check %s)",
expr -> data.check -> name);
return rv;
}
break;
case expr_equal:
if (len > 6) {
rv = 4;
strcpy (buf, "(eq ");
rv += print_subexpression (expr -> data.equal [0],
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.equal [1],
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_not_equal:
if (len > 7) {
rv = 5;
strcpy (buf, "(neq ");
rv += print_subexpression (expr -> data.equal [0],
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.equal [1],
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_substring:
if (len > 11) {
rv = 8;
strcpy (buf, "(substr ");
rv += print_subexpression (expr -> data.substring.expr,
buf + rv, len - rv - 3);
buf [rv++] = ' ';
rv += print_subexpression
(expr -> data.substring.offset,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.substring.len,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_suffix:
if (len > 10) {
rv = 8;
strcpy (buf, "(suffix ");
rv += print_subexpression (expr -> data.suffix.expr,
buf + rv, len - rv - 2);
if (len > rv)
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.suffix.len,
buf + rv, len - rv - 1);
if (len > rv)
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_concat:
if (len > 10) {
rv = 8;
strcpy (buf, "(concat ");
rv += print_subexpression (expr -> data.concat [0],
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.concat [1],
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_pick_first_value:
if (len > 8) {
rv = 6;
strcpy (buf, "(pick1st ");
rv += print_subexpression
(expr -> data.pick_first_value.car,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression
(expr -> data.pick_first_value.cdr,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_host_lookup:
rv = 15 + strlen (expr -> data.host_lookup -> hostname);
if (len > rv) {
sprintf (buf, "(dns-lookup %s)",
expr -> data.host_lookup -> hostname);
return rv;
}
break;
case expr_and:
s = "and";
binop:
rv = strlen (s);
if (len > rv + 4) {
buf [0] = '(';
strcpy (&buf [1], s);
rv += 1;
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.and [0],
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.and [1],
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_or:
s = "or";
goto binop;
case expr_add:
s = "+";
goto binop;
case expr_subtract:
s = "-";
goto binop;
case expr_multiply:
s = "*";
goto binop;
case expr_divide:
s = "/";
goto binop;
case expr_remainder:
s = "%";
goto binop;
case expr_binary_and:
s = "&";
goto binop;
case expr_binary_or:
s = "|";
goto binop;
case expr_binary_xor:
s = "^";
goto binop;
case expr_not:
if (len > 6) {
rv = 5;
strcpy (buf, "(not ");
rv += print_subexpression (expr -> data.not,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_config_option:
s = "cfg-option";
goto dooption;
case expr_option:
s = "option";
dooption:
rv = strlen (s) + 2 + (strlen (expr -> data.option -> name) +
strlen (expr -> data.option -> universe -> name));
if (len > rv) {
sprintf (buf, "(option %s.%s)",
expr -> data.option -> universe -> name,
expr -> data.option -> name);
return rv;
}
break;
case expr_hardware:
if (len > 10) {
strcpy (buf, "(hardware)");
return 10;
}
break;
case expr_packet:
if (len > 10) {
rv = 8;
strcpy (buf, "(substr ");
rv += print_subexpression (expr -> data.packet.offset,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.packet.len,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_const_data:
s = print_hex_1 (expr -> data.const_data.len,
expr -> data.const_data.data, len);
rv = strlen (s);
if (rv >= len)
rv = len - 1;
strncpy (buf, s, rv);
buf [rv] = 0;
return rv;
case expr_encapsulate:
rv = 13;
strcpy (buf, "(encapsulate ");
rv += expr -> data.encapsulate.len;
if (rv + 2 > len)
rv = len - 2;
strncpy (buf,
(const char *)expr -> data.encapsulate.data, rv - 13);
buf [rv++] = ')';
buf [rv++] = 0;
break;
case expr_extract_int8:
if (len > 7) {
rv = 6;
strcpy (buf, "(int8 ");
rv += print_subexpression (expr -> data.extract_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_extract_int16:
if (len > 8) {
rv = 7;
strcpy (buf, "(int16 ");
rv += print_subexpression (expr -> data.extract_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_extract_int32:
if (len > 8) {
rv = 7;
strcpy (buf, "(int32 ");
rv += print_subexpression (expr -> data.extract_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_encode_int8:
if (len > 7) {
rv = 6;
strcpy (buf, "(to-int8 ");
rv += print_subexpression (expr -> data.encode_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_encode_int16:
if (len > 8) {
rv = 7;
strcpy (buf, "(to-int16 ");
rv += print_subexpression (expr -> data.encode_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_encode_int32:
if (len > 8) {
rv = 7;
strcpy (buf, "(to-int32 ");
rv += print_subexpression (expr -> data.encode_int,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_const_int:
s = print_dec_1 (expr -> data.const_int);
rv = strlen (s);
if (len > rv) {
strcpy (buf, s);
return rv;
}
break;
case expr_exists:
rv = 10 + (strlen (expr -> data.option -> name) +
strlen (expr -> data.option -> universe -> name));
if (len > rv) {
sprintf (buf, "(exists %s.%s)",
expr -> data.option -> universe -> name,
expr -> data.option -> name);
return rv;
}
break;
case expr_variable_exists:
rv = 10 + strlen (expr -> data.variable);
if (len > rv) {
sprintf (buf, "(defined %s)", expr -> data.variable);
return rv;
}
break;
case expr_variable_reference:
rv = strlen (expr -> data.variable);
if (len > rv) {
sprintf (buf, "%s", expr -> data.variable);
return rv;
}
break;
case expr_known:
s = "known";
astring:
rv = strlen (s);
if (len > rv) {
strcpy (buf, s);
return rv;
}
break;
case expr_leased_address:
s = "leased-address";
goto astring;
case expr_client_state:
s = "client-state";
goto astring;
case expr_host_decl_name:
s = "host-decl-name";
goto astring;
case expr_lease_time:
s = "lease-time";
goto astring;
case expr_static:
s = "static";
goto astring;
case expr_filename:
s = "filename";
goto astring;
case expr_sname:
s = "server-name";
goto astring;
case expr_reverse:
if (len > 11) {
rv = 13;
strcpy (buf, "(reverse ");
rv += print_subexpression (expr -> data.reverse.width,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.reverse.buffer,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_binary_to_ascii:
if (len > 5) {
rv = 9;
strcpy (buf, "(b2a ");
rv += print_subexpression (expr -> data.b2a.base,
buf + rv, len - rv - 4);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.b2a.width,
buf + rv, len - rv - 3);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.b2a.seperator,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.b2a.buffer,
buf + rv, len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_dns_transaction:
rv = 10;
if (len < rv + 2) {
buf [0] = '(';
strcpy (&buf [1], "ns-update ");
while (len < rv + 2) {
rv += print_subexpression
(expr -> data.dns_transaction.car,
buf + rv, len - rv - 2);
buf [rv++] = ' ';
expr = expr -> data.dns_transaction.cdr;
}
buf [rv - 1] = ')';
buf [rv] = 0;
return rv;
}
return 0;
case expr_ns_delete:
s = "delete";
left = 4;
goto dodnsupd;
case expr_ns_exists:
s = "exists";
left = 4;
goto dodnsupd;
case expr_ns_not_exists:
s = "not_exists";
left = 4;
goto dodnsupd;
case expr_ns_add:
s = "update";
left = 5;
dodnsupd:
rv = strlen (s);
if (len > strlen (s) + 1) {
buf [0] = '(';
strcpy (buf + 1, s);
rv++;
buf [rv++] = ' ';
s = print_dec_1 (expr -> data.ns_add.rrclass);
if (len > rv + strlen (s) + left) {
strcpy (&buf [rv], s);
rv += strlen (&buf [rv]);
}
buf [rv++] = ' ';
left--;
s = print_dec_1 (expr -> data.ns_add.rrtype);
if (len > rv + strlen (s) + left) {
strcpy (&buf [rv], s);
rv += strlen (&buf [rv]);
}
buf [rv++] = ' ';
left--;
rv += print_subexpression
(expr -> data.ns_add.rrname,
buf + rv, len - rv - left);
buf [rv++] = ' ';
left--;
rv += print_subexpression
(expr -> data.ns_add.rrdata,
buf + rv, len - rv - left);
buf [rv++] = ' ';
left--;
rv += print_subexpression
(expr -> data.ns_add.ttl,
buf + rv, len - rv - left);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_null:
if (len > 6) {
strcpy (buf, "(null)");
return 6;
}
break;
case expr_funcall:
rv = 12 + strlen (expr -> data.funcall.name);
if (len > rv + 1) {
strcpy (buf, "(funcall ");
strcpy (buf + 9, expr -> data.funcall.name);
buf [rv++] = ' ';
rv += print_subexpression
(expr -> data.funcall.arglist, buf + rv,
len - rv - 1);
buf [rv++] = ')';
buf [rv] = 0;
return rv;
}
break;
case expr_arg:
rv = print_subexpression (expr -> data.arg.val, buf, len);
if (expr -> data.arg.next && rv + 2 < len) {
buf [rv++] = ' ';
rv += print_subexpression (expr -> data.arg.next,
buf, len);
if (rv + 1 < len)
buf [rv++] = 0;
return rv;
}
break;
case expr_function:
rv = 9;
if (len > rv + 1) {
struct string_list *foo;
strcpy (buf, "(function");
for (foo = expr -> data.func -> args;
foo; foo = foo -> next) {
if (len > rv + 2 + strlen (foo -> string)) {
buf [rv - 1] = ' ';
strcpy (&buf [rv], foo -> string);
rv += strlen (foo -> string);
}
}
buf [rv] = ')';
buf [rv++] = 0;
return rv;
}
}
return 0;
}
void print_expression (name, expr)
const char *name;
struct expression *expr;
{
char buf [1024];
print_subexpression (expr, buf, sizeof buf);
log_info ("%s: %s", name, buf);
}
int token_print_indent_concat (FILE *file, int col, int indent,
const char *prefix,
const char *suffix, ...)
{
va_list list;
char *buf;
unsigned len;
char *s, *t, *u;
va_start (list, suffix);
s = va_arg (list, char *);
len = 0;
while (s) {
len += strlen (s);
s = va_arg (list, char *);
}
va_end (list);
t = dmalloc (len + 1, MDL);
if (!t)
log_fatal ("token_print_indent: no memory for copy buffer");
va_start (list, suffix);
s = va_arg (list, char *);
u = t;
while (s) {
len = strlen (s);
strcpy (u, s);
u += len;
}
va_end (list);
len = token_print_indent (file, col, indent,
prefix, suffix, t);
dfree (t, MDL);
return col;
}
int token_indent_data_string (FILE *file, int col, int indent,
const char *prefix, const char *suffix,
struct data_string *data)
{
int i;
char *buf;
char obuf [3];
/* See if this is just ASCII. */
for (i = 0; i < data -> len; i++)
if (!isascii (data -> data [i]) ||
!isprint (data -> data [i]))
break;
/* If we have a purely ASCII string, output it as text. */
if (i == data -> len) {
char *buf = dmalloc (data -> len + 3, MDL);
if (buf) {
buf [0] = '"';
memcpy (buf + 1, data -> data, data -> len);
buf [data -> len + 1] = '"';
buf [data -> len + 2] = 0;
i = token_print_indent (file, col, indent,
prefix, suffix, buf);
dfree (buf, MDL);
return i;
}
}
for (i = 0; i < data -> len; i++) {
sprintf (obuf, "%2.2x", data -> data [i]);
col = token_print_indent (file, col, indent,
i == 0 ? prefix : "",
(i + 1 == data -> len
? suffix
: ""), obuf);
if (i + 1 != data -> len)
col = token_print_indent (file, col, indent,
prefix, suffix, ":");
}
return col;
}
int token_print_indent (FILE *file, int col, int indent,
const char *prefix,
const char *suffix, const char *buf)
{
int len = strlen (buf) + strlen (prefix);
if (col + len > 79) {
if (indent + len < 79) {
indent_spaces (file, indent);
col = indent;
} else {
indent_spaces (file, col);
col = len > 79 ? 0 : 79 - len - 1;
}
} else if (prefix && *prefix) {
fputs (prefix, file);
col += strlen (prefix);
}
fputs (buf, file);
col += len;
if (suffix && *suffix) {
if (col + strlen (suffix) > 79) {
indent_spaces (file, indent);
col = indent;
} else {
fputs (suffix, file);
col += strlen (suffix);
}
}
return col;
}
void indent_spaces (FILE *file, int indent)
{
int i;
fputc ('\n', file);
for (i = 0; i < indent; i++)
fputc (' ', file);
}
#if defined (NSUPDATE)
void print_dns_status (int status, ns_updque *uq)
{
char obuf [1024];
char *s = &obuf [0], *end = &obuf [1022];
ns_updrec *u;
int position;
int ttlp;
const char *predicate = "if", *en, *op;
int errorp;
for (u = ISC_LIST_HEAD (*uq); u; u = ISC_LIST_NEXT (u, r_link)) {
ttlp = 0;
switch (u -> r_opcode)
{
case NXRRSET:
op = "rrset doesn't exist";
position = 1;
break;
case YXRRSET:
op = "rrset exists";
position = 1;
break;
case NXDOMAIN:
op = "domain doesn't exist";
position = 1;
break;
case YXDOMAIN:
op = "domain exists";
position = 1;
break;
case ADD:
op = "add";
position = 0;
ttlp = 1;
break;
case DELETE:
op = "delete";
position = 0;
break;
default:
op = "unknown";
position = 0;
break;
}
if (!position) {
if (s != &obuf [0] && s + 1 < end)
*s++ = ' ';
if (s + strlen (op) < end) {
strcpy (s, op);
s += strlen (s);
}
} else {
if (s != &obuf [0] && s + 1 < end)
*s++ = ' ';
if (s + strlen (predicate) < end) {
strcpy (s, predicate);
s += strlen (s);
}
predicate = "and";
}
if (u -> r_dname) {
if (s + 1 < end)
*s++ = ' ';
if (s + strlen (u -> r_dname) < end) {
strcpy (s, u -> r_dname);
s += strlen (s);
}
}
if (ttlp) {
if (s + 1 < end)
*s++ = ' ';
/* 27 is as big as a ttl can get. */
if (s + 27 < end) {
sprintf (s, "%lu",
(unsigned long)(u -> r_ttl));
s += strlen (s);
}
}
switch (u -> r_class) {
case C_IN:
en = "IN";
break;
case C_CHAOS:
en = "CHAOS";
break;
case C_HS:
en = "HS";
break;
default:
en = "UNKNOWN";
break;
}
if (s + strlen (en) < end) {
if (s + 1 < end)
*s++ = ' ';
strcpy (s, en);
s += strlen (en);
}
switch (u -> r_type) {
case T_A:
en = "A";
break;
case T_PTR:
en = "PTR";
break;
case T_MX:
en = "MX";
break;
case T_TXT:
en = "TXT";
break;
case T_CNAME:
en = "CNAME";
break;
default:
en = "UNKNOWN";
break;
}
if (s + strlen (en) < end) {
if (s + 1 < end)
*s++ = ' ';
strcpy (s, en);
s += strlen (en);
}
if (u -> r_data) {
if (s + 1 < end)
*s++ = ' ';
if (u -> r_type == T_TXT) {
if (s + 1 < end)
*s++ = '"';
}
if (s + u -> r_size < end) {
memcpy (s, u -> r_data, u -> r_size);
s += u -> r_size;
if (u -> r_type == T_TXT) {
if (s + 1 < end)
*s++ = '"';
}
}
}
if (position) {
if (s + 1 < end)
*s++ = ' ';
if (s + strlen (op) < end) {
strcpy (s, op);
s += strlen (s);
}
}
if (u == ISC_LIST_TAIL (*uq))
break;
}
if (s == &obuf [0]) {
strcpy (s, "empty update");
s += strlen (s);
}
if (status == NOERROR)
errorp = 0;
else
errorp = 1;
en = isc_result_totext (status);
#if 0
switch (status) {
case -1:
en = "resolver failed";
break;
case FORMERR:
en = "format error";
break;
case NOERROR:
en = "succeeded";
errorp = 0;
break;
case NOTAUTH:
en = "not authorized";
break;
case NOTIMP:
en = "not implemented";
break;
case NOTZONE:
en = "not a single valid zone";
break;
case NXDOMAIN:
en = "no such domain";
break;
case NXRRSET:
en = "no such record";
break;
case REFUSED:
en = "refused";
break;
case SERVFAIL:
en = "server failed";
break;
case YXDOMAIN:
en = "domain exists";
break;
case YXRRSET:
en = "record exists";
break;
default:
en = "unknown error";
break;
}
#endif
if (s + 2 < end) {
*s++ = ':';
*s++ = ' ';
}
if (s + strlen (en) < end) {
strcpy (s, en);
s += strlen (en);
}
if (s + 1 < end)
*s++ = '.';
*s++ = 0;
if (errorp)
log_error ("%s", obuf);
else
log_info ("%s", obuf);
}
#endif /* NSUPDATE */
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