825 lines
18 KiB
C
825 lines
18 KiB
C
/* NeoStats - IRC Statistical Services
|
|
** Copyright (c) 1999-2004 Adam Rutter, Justin Hammond
|
|
** http://www.neostats.net/
|
|
**
|
|
** This program is free software; you can redistribute it and/or modify
|
|
** it under the terms of the GNU General Public License as published by
|
|
** the Free Software Foundation; either version 2 of the License, or
|
|
** (at your option) any later version.
|
|
**
|
|
** This program is distributed in the hope that it will be useful,
|
|
** but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
** GNU General Public License for more details.
|
|
**
|
|
** You should have received a copy of the GNU General Public License
|
|
** along with this program; if not, write to the Free Software
|
|
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
** USA
|
|
**
|
|
** NeoStats CVS Identification
|
|
** $Id$
|
|
*/
|
|
/*
|
|
* setup.c
|
|
* - configuration file parsing
|
|
* - management of global state
|
|
*/
|
|
/*
|
|
* This file is
|
|
* Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
|
|
*
|
|
* It is part of adns, which is
|
|
* Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
|
|
* Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <netdb.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include "internal.h"
|
|
|
|
static void readconfig(adns_state ads, const char *filename,
|
|
int warnmissing);
|
|
|
|
static void addserver(adns_state ads, struct in_addr addr)
|
|
{
|
|
int i;
|
|
struct server *ss;
|
|
|
|
for (i = 0; i < ads->nservers; i++) {
|
|
if (ads->servers[i].addr.s_addr == addr.s_addr) {
|
|
adns__debug(ads, -1, 0,
|
|
"duplicate nameserver %s ignored",
|
|
inet_ntoa(addr));
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (ads->nservers >= MAXSERVERS) {
|
|
adns__diag(ads, -1, 0, "too many nameservers, ignoring %s",
|
|
inet_ntoa(addr));
|
|
return;
|
|
}
|
|
|
|
ss = ads->servers + ads->nservers;
|
|
ss->addr = addr;
|
|
ads->nservers++;
|
|
}
|
|
|
|
static void freesearchlist(adns_state ads)
|
|
{
|
|
if (ads->nsearchlist)
|
|
free(*ads->searchlist);
|
|
free(ads->searchlist);
|
|
}
|
|
|
|
static void saveerr(adns_state ads, int en)
|
|
{
|
|
if (!ads->configerrno)
|
|
ads->configerrno = en;
|
|
}
|
|
|
|
static void configparseerr(adns_state ads, const char *fn, int lno,
|
|
const char *fmt, ...)
|
|
{
|
|
va_list al;
|
|
|
|
saveerr(ads, EINVAL);
|
|
if (!ads->diagfile || (ads->iflags & adns_if_noerrprint))
|
|
return;
|
|
|
|
if (lno == -1)
|
|
fprintf(ads->diagfile, "adns: %s: ", fn);
|
|
else
|
|
fprintf(ads->diagfile, "adns: %s:%d: ", fn, lno);
|
|
va_start(al, fmt);
|
|
vfprintf(ads->diagfile, fmt, al);
|
|
va_end(al);
|
|
fputc('\n', ads->diagfile);
|
|
}
|
|
|
|
static int nextword(const char **bufp_io, const char **word_r, int *l_r)
|
|
{
|
|
const char *p, *q;
|
|
|
|
p = *bufp_io;
|
|
while (ctype_whitespace(*p))
|
|
p++;
|
|
if (!*p)
|
|
return 0;
|
|
|
|
q = p;
|
|
while (*q && !ctype_whitespace(*q))
|
|
q++;
|
|
|
|
*l_r = q - p;
|
|
*word_r = p;
|
|
*bufp_io = q;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void ccf_nameserver(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
struct in_addr ia;
|
|
|
|
if (!inet_aton(buf, &ia)) {
|
|
configparseerr(ads, fn, lno,
|
|
"invalid nameserver address `%s'", buf);
|
|
return;
|
|
}
|
|
adns__debug(ads, -1, 0, "using nameserver %s", inet_ntoa(ia));
|
|
addserver(ads, ia);
|
|
}
|
|
|
|
static void ccf_search(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
const char *bufp, *word;
|
|
char *newchars, **newptrs, **pp;
|
|
int count, tl, l;
|
|
|
|
if (!buf)
|
|
return;
|
|
|
|
bufp = buf;
|
|
count = 0;
|
|
tl = 0;
|
|
while (nextword(&bufp, &word, &l)) {
|
|
count++;
|
|
tl += l + 1;
|
|
}
|
|
|
|
newptrs = malloc(sizeof(char *) * count);
|
|
if (!newptrs) {
|
|
saveerr(ads, errno);
|
|
return;
|
|
}
|
|
newchars = malloc(tl);
|
|
if (!newchars) {
|
|
saveerr(ads, errno);
|
|
free(newptrs);
|
|
return;
|
|
}
|
|
|
|
bufp = buf;
|
|
pp = newptrs;
|
|
while (nextword(&bufp, &word, &l)) {
|
|
*pp++ = newchars;
|
|
memcpy(newchars, word, l);
|
|
newchars += l;
|
|
*newchars++ = 0;
|
|
}
|
|
|
|
freesearchlist(ads);
|
|
ads->nsearchlist = count;
|
|
ads->searchlist = newptrs;
|
|
}
|
|
|
|
static void ccf_sortlist(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
const char *word;
|
|
char tbuf[200], *slash, *ep;
|
|
struct in_addr base, mask;
|
|
int l;
|
|
unsigned long initial, baselocal;
|
|
|
|
if (!buf)
|
|
return;
|
|
|
|
ads->nsortlist = 0;
|
|
while (nextword(&buf, &word, &l)) {
|
|
if (ads->nsortlist >= MAXSORTLIST) {
|
|
adns__diag(ads, -1, 0,
|
|
"too many sortlist entries, ignoring %.*s onwards",
|
|
l, word);
|
|
return;
|
|
}
|
|
|
|
if (l >= sizeof(tbuf)) {
|
|
configparseerr(ads, fn, lno,
|
|
"sortlist entry `%.*s' too long", l,
|
|
word);
|
|
continue;
|
|
}
|
|
|
|
memcpy(tbuf, word, l);
|
|
tbuf[l] = 0;
|
|
slash = strchr(tbuf, '/');
|
|
if (slash)
|
|
*slash++ = 0;
|
|
|
|
if (!inet_aton(tbuf, &base)) {
|
|
configparseerr(ads, fn, lno,
|
|
"invalid address `%s' in sortlist",
|
|
tbuf);
|
|
continue;
|
|
}
|
|
|
|
if (slash) {
|
|
if (strchr(slash, '.')) {
|
|
if (!inet_aton(slash, &mask)) {
|
|
configparseerr(ads, fn, lno,
|
|
"invalid mask `%s' in sortlist",
|
|
slash);
|
|
continue;
|
|
}
|
|
if (base.s_addr & ~mask.s_addr) {
|
|
configparseerr(ads, fn, lno,
|
|
"mask `%s' in sortlist overlaps address `%s'",
|
|
slash, tbuf);
|
|
continue;
|
|
}
|
|
} else {
|
|
initial = strtoul(slash, &ep, 10);
|
|
if (*ep || initial > 32) {
|
|
configparseerr(ads, fn, lno,
|
|
"mask length `%s' invalid",
|
|
slash);
|
|
continue;
|
|
}
|
|
mask.s_addr =
|
|
htonl((0x0ffffffffUL) <<
|
|
(32 - initial));
|
|
}
|
|
} else {
|
|
baselocal = ntohl(base.s_addr);
|
|
if (!baselocal & 0x080000000UL) /* class A */
|
|
mask.s_addr = htonl(0x0ff000000UL);
|
|
else if ((baselocal & 0x0c0000000UL) ==
|
|
0x080000000UL)
|
|
mask.s_addr = htonl(0x0ffff0000UL); /* class B */
|
|
else if ((baselocal & 0x0f0000000UL) ==
|
|
0x0e0000000UL)
|
|
mask.s_addr = htonl(0x0ff000000UL); /* class C */
|
|
else {
|
|
configparseerr(ads, fn, lno,
|
|
"network address `%s' in sortlist is not in classed ranges,"
|
|
" must specify mask explicitly",
|
|
tbuf);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
ads->sortlist[ads->nsortlist].base = base;
|
|
ads->sortlist[ads->nsortlist].mask = mask;
|
|
ads->nsortlist++;
|
|
}
|
|
}
|
|
|
|
static void ccf_options(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
const char *word;
|
|
char *ep;
|
|
unsigned long v;
|
|
int l;
|
|
|
|
if (!buf)
|
|
return;
|
|
|
|
while (nextword(&buf, &word, &l)) {
|
|
if (l == 5 && !memcmp(word, "debug", 5)) {
|
|
ads->iflags |= adns_if_debug;
|
|
continue;
|
|
}
|
|
if (l >= 6 && !memcmp(word, "ndots:", 6)) {
|
|
v = strtoul(word + 6, &ep, 10);
|
|
if (l == 6 || ep != word + l || v > INT_MAX) {
|
|
configparseerr(ads, fn, lno,
|
|
"option `%.*s' malformed or has bad value",
|
|
l, word);
|
|
continue;
|
|
}
|
|
ads->searchndots = v;
|
|
continue;
|
|
}
|
|
if (l >= 12 && !memcmp(word, "adns_checkc:", 12)) {
|
|
if (!strcmp(word + 12, "none")) {
|
|
ads->iflags &= ~adns_if_checkc_freq;
|
|
ads->iflags |= adns_if_checkc_entex;
|
|
} else if (!strcmp(word + 12, "entex")) {
|
|
ads->iflags &= ~adns_if_checkc_freq;
|
|
ads->iflags |= adns_if_checkc_entex;
|
|
} else if (!strcmp(word + 12, "freq")) {
|
|
ads->iflags |= adns_if_checkc_freq;
|
|
} else {
|
|
configparseerr(ads, fn, lno,
|
|
"option adns_checkc has bad value `%s' "
|
|
"(must be none, entex or freq",
|
|
word + 12);
|
|
}
|
|
continue;
|
|
}
|
|
adns__diag(ads, -1, 0, "%s:%d: unknown option `%.*s'", fn,
|
|
lno, l, word);
|
|
}
|
|
}
|
|
|
|
static void ccf_clearnss(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
ads->nservers = 0;
|
|
}
|
|
|
|
static void ccf_include(adns_state ads, const char *fn, int lno,
|
|
const char *buf)
|
|
{
|
|
if (!*buf) {
|
|
configparseerr(ads, fn, lno,
|
|
"`include' directive with no filename");
|
|
return;
|
|
}
|
|
readconfig(ads, buf, 1);
|
|
}
|
|
|
|
static const struct configcommandinfo {
|
|
const char *name;
|
|
void (*fn) (adns_state ads, const char *fn, int lno,
|
|
const char *buf);
|
|
} configcommandinfos[] = {
|
|
{
|
|
"nameserver", ccf_nameserver}, {
|
|
"domain", ccf_search}, {
|
|
"search", ccf_search}, {
|
|
"sortlist", ccf_sortlist}, {
|
|
"options", ccf_options}, {
|
|
"clearnameservers", ccf_clearnss}, {
|
|
"include", ccf_include}, {
|
|
0}
|
|
};
|
|
|
|
typedef union {
|
|
FILE *file;
|
|
const char *text;
|
|
} getline_ctx;
|
|
|
|
static int gl_file(adns_state ads, getline_ctx * src_io,
|
|
const char *filename, int lno, char *buf, int buflen)
|
|
{
|
|
FILE *file = src_io->file;
|
|
int c, i;
|
|
char *p;
|
|
|
|
p = buf;
|
|
buflen--;
|
|
i = 0;
|
|
|
|
for (;;) { /* loop over chars */
|
|
if (i == buflen) {
|
|
adns__diag(ads, -1, 0,
|
|
"%s:%d: line too long, ignored",
|
|
filename, lno);
|
|
goto x_badline;
|
|
}
|
|
c = getc(file);
|
|
if (!c) {
|
|
adns__diag(ads, -1, 0,
|
|
"%s:%d: line contains nul, ignored",
|
|
filename, lno);
|
|
goto x_badline;
|
|
} else if (c == '\n') {
|
|
break;
|
|
} else if (c == EOF) {
|
|
if (ferror(file)) {
|
|
saveerr(ads, errno);
|
|
adns__diag(ads, -1, 0,
|
|
"%s:%d: read error: %s",
|
|
filename, lno, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (!i)
|
|
return -1;
|
|
break;
|
|
} else {
|
|
*p++ = c;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
*p++ = 0;
|
|
return i;
|
|
|
|
x_badline:
|
|
saveerr(ads, EINVAL);
|
|
while ((c = getc(file)) != EOF && c != '\n');
|
|
return -2;
|
|
}
|
|
|
|
static int gl_text(adns_state ads, getline_ctx * src_io,
|
|
const char *filename, int lno, char *buf, int buflen)
|
|
{
|
|
const char *cp = src_io->text;
|
|
int l;
|
|
|
|
if (!cp || !*cp)
|
|
return -1;
|
|
|
|
if (*cp == ';' || *cp == '\n')
|
|
cp++;
|
|
l = strcspn(cp, ";\n");
|
|
src_io->text = cp + l;
|
|
|
|
if (l >= buflen) {
|
|
adns__diag(ads, -1, 0, "%s:%d: line too long, ignored",
|
|
filename, lno);
|
|
saveerr(ads, EINVAL);
|
|
return -2;
|
|
}
|
|
|
|
memcpy(buf, cp, l);
|
|
buf[l] = 0;
|
|
return l;
|
|
}
|
|
|
|
static void readconfiggeneric(adns_state ads, const char *filename,
|
|
int (*getline) (adns_state ads,
|
|
getline_ctx *,
|
|
const char *filename,
|
|
int lno, char *buf,
|
|
int buflen),
|
|
/* Returns >=0 for success, -1 for EOF or error
|
|
* (error will have been reported), or -2 for
|
|
* bad line was encountered, try again.
|
|
*/
|
|
getline_ctx gl_ctx)
|
|
{
|
|
char linebuf[2000], *p, *q;
|
|
int lno, l, dirl;
|
|
const struct configcommandinfo *ccip;
|
|
|
|
for (lno = 1;
|
|
(l =
|
|
getline(ads, &gl_ctx, filename, lno, linebuf,
|
|
sizeof(linebuf))) != -1; lno++) {
|
|
if (l == -2)
|
|
continue;
|
|
while (l > 0 && ctype_whitespace(linebuf[l - 1]))
|
|
l--;
|
|
linebuf[l] = 0;
|
|
p = linebuf;
|
|
while (ctype_whitespace(*p))
|
|
p++;
|
|
if (*p == '#' || !*p)
|
|
continue;
|
|
q = p;
|
|
while (*q && !ctype_whitespace(*q))
|
|
q++;
|
|
dirl = q - p;
|
|
for (ccip = configcommandinfos;
|
|
ccip->name && !(strlen(ccip->name) == dirl
|
|
&& !memcmp(ccip->name, p, q - p));
|
|
ccip++);
|
|
if (!ccip->name) {
|
|
adns__diag(ads, -1, 0,
|
|
"%s:%d: unknown configuration directive `%.*s'",
|
|
filename, lno, q - p, p);
|
|
continue;
|
|
}
|
|
while (ctype_whitespace(*q))
|
|
q++;
|
|
ccip->fn(ads, filename, lno, q);
|
|
}
|
|
}
|
|
|
|
static const char *instrum_getenv(adns_state ads, const char *envvar)
|
|
{
|
|
const char *value;
|
|
|
|
value = getenv(envvar);
|
|
if (!value)
|
|
adns__debug(ads, -1, 0, "environment variable %s not set",
|
|
envvar);
|
|
else
|
|
adns__debug(ads, -1, 0,
|
|
"environment variable %s set to `%s'", envvar,
|
|
value);
|
|
return value;
|
|
}
|
|
|
|
static void readconfig(adns_state ads, const char *filename,
|
|
int warnmissing)
|
|
{
|
|
getline_ctx gl_ctx;
|
|
|
|
gl_ctx.file = fopen(filename, "r");
|
|
if (!gl_ctx.file) {
|
|
if (errno == ENOENT) {
|
|
if (warnmissing)
|
|
adns__debug(ads, -1, 0,
|
|
"configuration file `%s' does not exist",
|
|
filename);
|
|
return;
|
|
}
|
|
saveerr(ads, errno);
|
|
adns__diag(ads, -1, 0,
|
|
"cannot open configuration file `%s': %s",
|
|
filename, strerror(errno));
|
|
return;
|
|
}
|
|
|
|
readconfiggeneric(ads, filename, gl_file, gl_ctx);
|
|
|
|
fclose(gl_ctx.file);
|
|
}
|
|
|
|
static void readconfigtext(adns_state ads, const char *text,
|
|
const char *showname)
|
|
{
|
|
getline_ctx gl_ctx;
|
|
|
|
gl_ctx.text = text;
|
|
readconfiggeneric(ads, showname, gl_text, gl_ctx);
|
|
}
|
|
|
|
static void readconfigenv(adns_state ads, const char *envvar)
|
|
{
|
|
const char *filename;
|
|
|
|
if (ads->iflags & adns_if_noenv) {
|
|
adns__debug(ads, -1, 0,
|
|
"not checking environment variable `%s'",
|
|
envvar);
|
|
return;
|
|
}
|
|
filename = instrum_getenv(ads, envvar);
|
|
if (filename)
|
|
readconfig(ads, filename, 1);
|
|
}
|
|
|
|
static void readconfigenvtext(adns_state ads, const char *envvar)
|
|
{
|
|
const char *textdata;
|
|
|
|
if (ads->iflags & adns_if_noenv) {
|
|
adns__debug(ads, -1, 0,
|
|
"not checking environment variable `%s'",
|
|
envvar);
|
|
return;
|
|
}
|
|
textdata = instrum_getenv(ads, envvar);
|
|
if (textdata)
|
|
readconfigtext(ads, textdata, envvar);
|
|
}
|
|
|
|
|
|
int adns__setnonblock(adns_state ads, int fd)
|
|
{
|
|
int r;
|
|
|
|
r = fcntl(fd, F_GETFL, 0);
|
|
if (r < 0)
|
|
return errno;
|
|
r |= O_NONBLOCK;
|
|
r = fcntl(fd, F_SETFL, r);
|
|
if (r < 0)
|
|
return errno;
|
|
return 0;
|
|
}
|
|
|
|
static int init_begin(adns_state * ads_r, adns_initflags flags,
|
|
FILE * diagfile)
|
|
{
|
|
adns_state ads;
|
|
|
|
ads = malloc(sizeof(*ads));
|
|
if (!ads)
|
|
return errno;
|
|
|
|
ads->iflags = flags;
|
|
ads->diagfile = diagfile;
|
|
ads->configerrno = 0;
|
|
ALIST_INIT(ads->udpw);
|
|
ALIST_INIT(ads->tcpw);
|
|
ALIST_INIT(ads->childw);
|
|
ALIST_INIT(ads->output);
|
|
ads->forallnext = 0;
|
|
ads->nextid = 0x311f;
|
|
ads->udpsocket = ads->tcpsocket = -1;
|
|
adns__vbuf_init(&ads->tcpsend);
|
|
adns__vbuf_init(&ads->tcprecv);
|
|
ads->tcprecv_skip = 0;
|
|
ads->nservers = ads->nsortlist = ads->nsearchlist =
|
|
ads->tcpserver = 0;
|
|
ads->searchndots = 1;
|
|
ads->tcpstate = server_disconnected;
|
|
timerclear(&ads->tcptimeout);
|
|
ads->searchlist = 0;
|
|
|
|
*ads_r = ads;
|
|
return 0;
|
|
}
|
|
|
|
static int init_finish(adns_state ads)
|
|
{
|
|
struct in_addr ia;
|
|
struct protoent *proto;
|
|
int r;
|
|
|
|
if (!ads->nservers) {
|
|
if (ads->diagfile && ads->iflags & adns_if_debug)
|
|
fprintf(ads->diagfile,
|
|
"adns: no nameservers, using localhost\n");
|
|
ia.s_addr = htonl(INADDR_LOOPBACK);
|
|
addserver(ads, ia);
|
|
}
|
|
|
|
proto = getprotobyname("udp");
|
|
if (!proto) {
|
|
r = ENOPROTOOPT;
|
|
goto x_free;
|
|
}
|
|
ads->udpsocket = socket(AF_INET, SOCK_DGRAM, proto->p_proto);
|
|
if (ads->udpsocket < 0) {
|
|
r = errno;
|
|
goto x_free;
|
|
}
|
|
|
|
r = adns__setnonblock(ads, ads->udpsocket);
|
|
if (r) {
|
|
r = errno;
|
|
goto x_closeudp;
|
|
}
|
|
|
|
return 0;
|
|
|
|
x_closeudp:
|
|
close(ads->udpsocket);
|
|
x_free:
|
|
free(ads);
|
|
return r;
|
|
}
|
|
|
|
static void init_abort(adns_state ads)
|
|
{
|
|
if (ads->nsearchlist) {
|
|
free(ads->searchlist[0]);
|
|
free(ads->searchlist);
|
|
}
|
|
free(ads);
|
|
}
|
|
|
|
int adns_init(adns_state * ads_r, adns_initflags flags, FILE * diagfile)
|
|
{
|
|
adns_state ads;
|
|
const char *res_options, *adns_res_options;
|
|
int r;
|
|
|
|
r = init_begin(&ads, flags, diagfile ? diagfile : stderr);
|
|
if (r)
|
|
return r;
|
|
|
|
res_options = instrum_getenv(ads, "RES_OPTIONS");
|
|
adns_res_options = instrum_getenv(ads, "ADNS_RES_OPTIONS");
|
|
ccf_options(ads, "RES_OPTIONS", -1, res_options);
|
|
ccf_options(ads, "ADNS_RES_OPTIONS", -1, adns_res_options);
|
|
|
|
readconfig(ads, "/etc/resolv.conf", 1);
|
|
readconfig(ads, "/etc/resolv-adns.conf", 0);
|
|
readconfigenv(ads, "RES_CONF");
|
|
readconfigenv(ads, "ADNS_RES_CONF");
|
|
|
|
readconfigenvtext(ads, "RES_CONF_TEXT");
|
|
readconfigenvtext(ads, "ADNS_RES_CONF_TEXT");
|
|
|
|
ccf_options(ads, "RES_OPTIONS", -1, res_options);
|
|
ccf_options(ads, "ADNS_RES_OPTIONS", -1, adns_res_options);
|
|
|
|
ccf_search(ads, "LOCALDOMAIN", -1,
|
|
instrum_getenv(ads, "LOCALDOMAIN"));
|
|
ccf_search(ads, "ADNS_LOCALDOMAIN", -1,
|
|
instrum_getenv(ads, "ADNS_LOCALDOMAIN"));
|
|
|
|
if (ads->configerrno && ads->configerrno != EINVAL) {
|
|
r = ads->configerrno;
|
|
init_abort(ads);
|
|
return r;
|
|
}
|
|
|
|
r = init_finish(ads);
|
|
if (r)
|
|
return r;
|
|
|
|
adns__consistency(ads, 0, cc_entex);
|
|
*ads_r = ads;
|
|
return 0;
|
|
}
|
|
|
|
int adns_init_strcfg(adns_state * ads_r, adns_initflags flags,
|
|
FILE * diagfile, const char *configtext)
|
|
{
|
|
adns_state ads;
|
|
int r;
|
|
|
|
r = init_begin(&ads, flags, diagfile);
|
|
if (r)
|
|
return r;
|
|
|
|
readconfigtext(ads, configtext, "<supplied configuration text>");
|
|
if (ads->configerrno) {
|
|
r = ads->configerrno;
|
|
init_abort(ads);
|
|
return r;
|
|
}
|
|
|
|
r = init_finish(ads);
|
|
if (r)
|
|
return r;
|
|
adns__consistency(ads, 0, cc_entex);
|
|
*ads_r = ads;
|
|
return 0;
|
|
}
|
|
|
|
|
|
void adns_finish(adns_state ads)
|
|
{
|
|
adns__consistency(ads, 0, cc_entex);
|
|
for (;;) {
|
|
if (ads->udpw.head)
|
|
adns_cancel(ads->udpw.head);
|
|
else if (ads->tcpw.head)
|
|
adns_cancel(ads->tcpw.head);
|
|
else if (ads->childw.head)
|
|
adns_cancel(ads->childw.head);
|
|
else if (ads->output.head)
|
|
adns_cancel(ads->output.head);
|
|
else
|
|
break;
|
|
}
|
|
close(ads->udpsocket);
|
|
if (ads->tcpsocket >= 0)
|
|
close(ads->tcpsocket);
|
|
adns__vbuf_free(&ads->tcpsend);
|
|
adns__vbuf_free(&ads->tcprecv);
|
|
freesearchlist(ads);
|
|
free(ads);
|
|
}
|
|
|
|
void adns_forallqueries_begin(adns_state ads)
|
|
{
|
|
adns__consistency(ads, 0, cc_entex);
|
|
ads->forallnext =
|
|
ads->udpw.head ? ads->udpw.head :
|
|
ads->tcpw.head ? ads->tcpw.head :
|
|
ads->childw.head ? ads->childw.head : ads->output.head;
|
|
}
|
|
|
|
adns_query adns_forallqueries_next(adns_state ads, void **context_r)
|
|
{
|
|
adns_query qu, nqu;
|
|
|
|
adns__consistency(ads, 0, cc_entex);
|
|
nqu = ads->forallnext;
|
|
for (;;) {
|
|
qu = nqu;
|
|
if (!qu)
|
|
return 0;
|
|
if (qu->next) {
|
|
nqu = qu->next;
|
|
} else if (qu == ads->udpw.tail) {
|
|
nqu =
|
|
ads->tcpw.head ? ads->tcpw.head :
|
|
ads->childw.head ? ads->childw.head :
|
|
ads->output.head;
|
|
} else if (qu == ads->tcpw.tail) {
|
|
nqu =
|
|
ads->childw.head ? ads->childw.head :
|
|
ads->output.head;
|
|
} else if (qu == ads->childw.tail) {
|
|
nqu = ads->output.head;
|
|
} else {
|
|
nqu = 0;
|
|
}
|
|
if (!qu->parent)
|
|
break;
|
|
}
|
|
ads->forallnext = nqu;
|
|
if (context_r)
|
|
*context_r = qu->ctx.ext;
|
|
return qu;
|
|
}
|