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/* $OpenBSD: parse.y,v 1.22 2024/04/23 22:11:59 florian Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
* Copyright (c) 2004 Ryan McBride <mcbride@openbsd.org>
* Copyright (c) 2002, 2003, 2004 Henning Brauer <henning@openbsd.org>
* Copyright (c) 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
* Copyright (c) 2001 Theo de Raadt. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
%{
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <imsg.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "log.h"
#include "rad.h"
#include "frontend.h"
TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
static struct file {
TAILQ_ENTRY(file) entry;
FILE *stream;
char *name;
size_t ungetpos;
size_t ungetsize;
u_char *ungetbuf;
int eof_reached;
int lineno;
int errors;
} *file, *topfile;
struct file *pushfile(const char *, int);
int popfile(void);
int check_file_secrecy(int, const char *);
int yyparse(void);
int yylex(void);
int yyerror(const char *, ...)
__attribute__((__format__ (printf, 1, 2)))
__attribute__((__nonnull__ (1)));
int kw_cmp(const void *, const void *);
int lookup(char *);
int igetc(void);
int lgetc(int);
void lungetc(int);
int findeol(void);
TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
struct sym {
TAILQ_ENTRY(sym) entry;
int used;
int persist;
char *nam;
char *val;
};
int symset(const char *, const char *, int);
char *symget(const char *);
void clear_config(struct rad_conf *xconf);
static struct rad_conf *conf;
static struct ra_options_conf *ra_options;
static int errors;
static struct ra_iface_conf *ra_iface_conf;
static struct ra_prefix_conf *ra_prefix_conf;
static struct ra_pref64_conf *ra_pref64_conf;
struct ra_prefix_conf *conf_get_ra_prefix(struct in6_addr*, int);
struct ra_pref64_conf *conf_get_ra_pref64(struct in6_addr*, int);
struct ra_iface_conf *conf_get_ra_iface(char *);
void copy_dns_options(const struct ra_options_conf *,
struct ra_options_conf *);
void copy_pref64_options(const struct ra_options_conf *,
struct ra_options_conf *);
typedef struct {
union {
int64_t number;
char *string;
} v;
int lineno;
} YYSTYPE;
%}
%token RA_IFACE YES NO INCLUDE ERROR
%token DEFAULT ROUTER HOP LIMIT MANAGED ADDRESS
%token CONFIGURATION OTHER LIFETIME REACHABLE TIME RETRANS TIMER
%token AUTO PREFIX VALID PREFERENCE PREFERRED LIFETIME ONLINK AUTONOMOUS
%token ADDRESS_CONFIGURATION DNS NAMESERVER SEARCH MTU NAT64 HIGH MEDIUM LOW
%token <v.string> STRING
%token <v.number> NUMBER
%type <v.number> yesno
%type <v.string> string
%%
grammar : /* empty */
| grammar include '\n'
| grammar '\n'
| grammar { ra_options = &conf->ra_options; } conf_main '\n'
| grammar varset '\n'
| grammar ra_iface '\n'
| grammar error '\n' { file->errors++; }
;
include : INCLUDE STRING {
struct file *nfile;
if ((nfile = pushfile($2, 0)) == NULL) {
yyerror("failed to include file %s", $2);
free($2);
YYERROR;
}
free($2);
file = nfile;
lungetc('\n');
}
;
string : string STRING {
if (asprintf(&$$, "%s %s", $1, $2) == -1) {
free($1);
free($2);
yyerror("string: asprintf");
YYERROR;
}
free($1);
free($2);
}
| STRING
;
yesno : YES { $$ = 1; }
| NO { $$ = 0; }
;
varset : STRING '=' string {
char *s = $1;
if (cmd_opts & OPT_VERBOSE)
printf("%s = \"%s\"\n", $1, $3);
while (*s++) {
if (isspace((unsigned char)*s)) {
yyerror("macro name cannot contain "
"whitespace");
free($1);
free($3);
YYERROR;
}
}
if (symset($1, $3, 0) == -1)
fatal("cannot store variable");
free($1);
free($3);
}
;
conf_main : ra_opt_block {
ra_options = &conf->ra_options;
}
;
ra_opt_block : DEFAULT ROUTER yesno {
ra_options->dfr = $3;
}
| HOP LIMIT NUMBER {
ra_options->cur_hl = $3;
}
| MANAGED ADDRESS CONFIGURATION yesno {
ra_options->m_flag = $4;
}
| OTHER CONFIGURATION yesno {
ra_options->o_flag = $3;
}
| ROUTER LIFETIME NUMBER {
ra_options->router_lifetime = $3;
}
| ROUTER PREFERENCE HIGH {
ra_options->rtpref = ND_RA_FLAG_RTPREF_HIGH;
}
| ROUTER PREFERENCE MEDIUM {
ra_options->rtpref = ND_RA_FLAG_RTPREF_MEDIUM;
}
| ROUTER PREFERENCE LOW {
ra_options->rtpref = ND_RA_FLAG_RTPREF_LOW;
}
| REACHABLE TIME NUMBER {
ra_options->reachable_time = $3;
}
| RETRANS TIMER NUMBER {
ra_options->retrans_timer = $3;
}
| MTU NUMBER {
ra_options->mtu = $2;
}
| NAT64 PREFIX STRING {
struct in6_addr addr;
int prefixlen;
char *p;
const char *errstr;
memset(&addr, 0, sizeof(addr));
p = strchr($3, '/');
if (p != NULL) {
*p++ = '\0';
prefixlen = strtonum(p, 0, 128, &errstr);
if (errstr != NULL) {
yyerror("error parsing prefix "
"\"%s/%s\"", $3, p);
free($3);
YYERROR;
}
} else
prefixlen = 96;
switch (prefixlen) {
case 96:
case 64:
case 56:
case 48:
case 40:
case 32:
break;
default:
yyerror("invalid nat64 prefix length: %d",
prefixlen);
YYERROR;
break;
}
if(inet_pton(AF_INET6, $3, &addr) == 0) {
yyerror("error parsing prefix \"%s/%d\"", $3,
prefixlen);
free($3);
YYERROR;
}
mask_prefix(&addr, prefixlen);
ra_pref64_conf = conf_get_ra_pref64(&addr, prefixlen);
} ra_pref64_block {
ra_pref64_conf = NULL;
}
| DNS dns_block
;
optnl : '\n' optnl /* zero or more newlines */
| /*empty*/
;
nl : '\n' optnl /* one or more newlines */
;
ra_iface : RA_IFACE STRING {
ra_iface_conf = conf_get_ra_iface($2);
/* set auto prefix defaults */
ra_iface_conf->autoprefix = conf_get_ra_prefix(NULL, 0);
ra_options = &ra_iface_conf->ra_options;
} ra_iface_block {
ra_iface_conf = NULL;
ra_options = &conf->ra_options;
}
;
ra_iface_block : '{' optnl ra_ifaceopts_l '}'
| '{' optnl '}'
| /* empty */
;
ra_ifaceopts_l : ra_ifaceopts_l ra_ifaceoptsl nl
| ra_ifaceoptsl optnl
;
ra_ifaceoptsl : NO AUTO PREFIX {
free(ra_iface_conf->autoprefix);
ra_iface_conf->autoprefix = NULL;
}
| AUTO PREFIX {
if (ra_iface_conf->autoprefix == NULL)
ra_iface_conf->autoprefix =
conf_get_ra_prefix(NULL, 0);
ra_prefix_conf = ra_iface_conf->autoprefix;
} ra_prefix_block {
ra_prefix_conf = NULL;
}
| PREFIX STRING {
struct in6_addr addr;
int prefixlen;
char *p;
const char *errstr;
memset(&addr, 0, sizeof(addr));
p = strchr($2, '/');
if (p != NULL) {
*p++ = '\0';
prefixlen = strtonum(p, 0, 128, &errstr);
if (errstr != NULL) {
yyerror("error parsing prefix "
"\"%s/%s\"", $2, p);
free($2);
YYERROR;
}
} else
prefixlen = 64;
if(inet_pton(AF_INET6, $2, &addr) == 0) {
yyerror("error parsing prefix \"%s/%d\"", $2,
prefixlen);
free($2);
YYERROR;
}
mask_prefix(&addr, prefixlen);
ra_prefix_conf = conf_get_ra_prefix(&addr, prefixlen);
} ra_prefix_block {
ra_prefix_conf = NULL;
}
| ra_opt_block
;
ra_prefix_block : '{' optnl ra_prefixopts_l '}'
| '{' optnl '}'
| /* empty */
;
ra_prefixopts_l : ra_prefixopts_l ra_prefixoptsl nl
| ra_prefixoptsl optnl
;
ra_prefixoptsl : VALID LIFETIME NUMBER {
ra_prefix_conf->vltime = $3;
}
| PREFERRED LIFETIME NUMBER {
ra_prefix_conf->pltime = $3;
}
| ONLINK yesno {
ra_prefix_conf->lflag = $2;
}
| AUTONOMOUS ADDRESS_CONFIGURATION yesno {
ra_prefix_conf->aflag = $3;
}
;
ra_pref64_block : '{' optnl ra_pref64opts_l '}'
| '{' optnl '}'
| /* empty */
;
ra_pref64opts_l : ra_pref64opts_l ra_pref64optsl nl
| ra_pref64optsl optnl
;
ra_pref64optsl : LIFETIME NUMBER {
if ($2 < 0 || $2 > 65528) {
yyerror("Invalid nat64 prefix lifetime: %lld",
$2);
YYERROR;
}
ra_pref64_conf->ltime = $2;
}
;
dns_block : '{' optnl dnsopts_l '}'
| '{' optnl '}'
| /* empty */
;
dnsopts_l : dnsopts_l dnsoptsl nl
| dnsoptsl optnl
;
dnsoptsl : LIFETIME NUMBER {
ra_options->rdns_lifetime = $2;
}
| NAMESERVER nserver_block
| SEARCH search_block
;
nserver_block : '{' optnl nserveropts_l '}'
| '{' optnl '}'
| nserveroptsl
| /* empty */
;
nserveropts_l : nserveropts_l nserveroptsl optnl
| nserveroptsl optnl
;
nserveroptsl : STRING {
struct ra_rdnss_conf *ra_rdnss_conf;
struct in6_addr addr;
memset(&addr, 0, sizeof(addr));
if (inet_pton(AF_INET6, $1, &addr)
!= 1) {
yyerror("error parsing nameserver address %s",
$1);
free($1);
YYERROR;
}
if ((ra_rdnss_conf = calloc(1, sizeof(*ra_rdnss_conf)))
== NULL)
err(1, "%s", __func__);
memcpy(&ra_rdnss_conf->rdnss, &addr, sizeof(addr));
SIMPLEQ_INSERT_TAIL(&ra_options->ra_rdnss_list,
ra_rdnss_conf, entry);
ra_options->rdnss_count++;
}
;
search_block : '{' optnl searchopts_l '}'
| '{' optnl '}'
| searchoptsl
| /* empty */
;
searchopts_l : searchopts_l searchoptsl optnl
| searchoptsl optnl
;
searchoptsl : STRING {
struct ra_dnssl_conf *ra_dnssl_conf;
size_t len;
if ((ra_dnssl_conf = calloc(1,
sizeof(*ra_dnssl_conf))) == NULL)
err(1, "%s", __func__);
if ((len = strlcpy(ra_dnssl_conf->search, $1,
sizeof(ra_dnssl_conf->search))) >=
sizeof(ra_dnssl_conf->search)) {
yyerror("search string too long");
free($1);
YYERROR;
}
if (ra_dnssl_conf->search[len] != '.') {
if ((len = strlcat(ra_dnssl_conf->search, ".",
sizeof(ra_dnssl_conf->search))) >
sizeof(ra_dnssl_conf->search)) {
yyerror("search string too long");
free($1);
YYERROR;
}
}
SIMPLEQ_INSERT_TAIL(&ra_options->ra_dnssl_list,
ra_dnssl_conf, entry);
ra_options->dnssl_len += len + 1;
}
;
%%
struct keywords {
const char *k_name;
int k_val;
};
int
yyerror(const char *fmt, ...)
{
va_list ap;
char *msg;
file->errors++;
va_start(ap, fmt);
if (vasprintf(&msg, fmt, ap) == -1)
fatalx("yyerror vasprintf");
va_end(ap);
logit(LOG_CRIT, "%s:%d: %s", file->name, yylval.lineno, msg);
free(msg);
return (0);
}
int
kw_cmp(const void *k, const void *e)
{
return (strcmp(k, ((const struct keywords *)e)->k_name));
}
int
lookup(char *s)
{
/* This has to be sorted always. */
static const struct keywords keywords[] = {
{"address", ADDRESS},
{"address-configuration", ADDRESS_CONFIGURATION},
{"auto", AUTO},
{"autonomous", AUTONOMOUS},
{"configuration", CONFIGURATION},
{"default", DEFAULT},
{"dns", DNS},
{"high", HIGH},
{"hop", HOP},
{"include", INCLUDE},
{"interface", RA_IFACE},
{"lifetime", LIFETIME},
{"limit", LIMIT},
{"low", LOW},
{"managed", MANAGED},
{"medium", MEDIUM},
{"mtu", MTU},
{"nameserver", NAMESERVER},
{"nat64", NAT64},
{"no", NO},
{"on-link", ONLINK},
{"other", OTHER},
{"preference", PREFERENCE},
{"preferred", PREFERRED},
{"prefix", PREFIX},
{"reachable", REACHABLE},
{"retrans", RETRANS},
{"router", ROUTER},
{"search", SEARCH},
{"time", TIME},
{"timer", TIMER},
{"valid", VALID},
{"yes", YES},
};
const struct keywords *p;
p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
sizeof(keywords[0]), kw_cmp);
if (p)
return (p->k_val);
else
return (STRING);
}
#define START_EXPAND 1
#define DONE_EXPAND 2
static int expanding;
int
igetc(void)
{
int c;
while (1) {
if (file->ungetpos > 0)
c = file->ungetbuf[--file->ungetpos];
else
c = getc(file->stream);
if (c == START_EXPAND)
expanding = 1;
else if (c == DONE_EXPAND)
expanding = 0;
else
break;
}
return (c);
}
int
lgetc(int quotec)
{
int c, next;
if (quotec) {
if ((c = igetc()) == EOF) {
yyerror("reached end of file while parsing "
"quoted string");
if (file == topfile || popfile() == EOF)
return (EOF);
return (quotec);
}
return (c);
}
while ((c = igetc()) == '\\') {
next = igetc();
if (next != '\n') {
c = next;
break;
}
yylval.lineno = file->lineno;
file->lineno++;
}
if (c == EOF) {
/*
* Fake EOL when hit EOF for the first time. This gets line
* count right if last line in included file is syntactically
* invalid and has no newline.
*/
if (file->eof_reached == 0) {
file->eof_reached = 1;
return ('\n');
}
while (c == EOF) {
if (file == topfile || popfile() == EOF)
return (EOF);
c = igetc();
}
}
return (c);
}
void
lungetc(int c)
{
if (c == EOF)
return;
if (file->ungetpos >= file->ungetsize) {
void *p = reallocarray(file->ungetbuf, file->ungetsize, 2);
if (p == NULL)
err(1, "lungetc");
file->ungetbuf = p;
file->ungetsize *= 2;
}
file->ungetbuf[file->ungetpos++] = c;
}
int
findeol(void)
{
int c;
/* Skip to either EOF or the first real EOL. */
while (1) {
c = lgetc(0);
if (c == '\n') {
file->lineno++;
break;
}
if (c == EOF)
break;
}
return (ERROR);
}
int
yylex(void)
{
char buf[8096];
char *p, *val;
int quotec, next, c;
int token;
top:
p = buf;
while ((c = lgetc(0)) == ' ' || c == '\t')
; /* nothing */
yylval.lineno = file->lineno;
if (c == '#')
while ((c = lgetc(0)) != '\n' && c != EOF)
; /* nothing */
if (c == '$' && !expanding) {
while (1) {
if ((c = lgetc(0)) == EOF)
return (0);
if (p + 1 >= buf + sizeof(buf) - 1) {
yyerror("string too long");
return (findeol());
}
if (isalnum(c) || c == '_') {
*p++ = c;
continue;
}
*p = '\0';
lungetc(c);
break;
}
val = symget(buf);
if (val == NULL) {
yyerror("macro '%s' not defined", buf);
return (findeol());
}
p = val + strlen(val) - 1;
lungetc(DONE_EXPAND);
while (p >= val) {
lungetc((unsigned char)*p);
p--;
}
lungetc(START_EXPAND);
goto top;
}
switch (c) {
case '\'':
case '"':
quotec = c;
while (1) {
if ((c = lgetc(quotec)) == EOF)
return (0);
if (c == '\n') {
file->lineno++;
continue;
} else if (c == '\\') {
if ((next = lgetc(quotec)) == EOF)
return (0);
if (next == quotec || next == ' ' ||
next == '\t')
c = next;
else if (next == '\n') {
file->lineno++;
continue;
} else
lungetc(next);
} else if (c == quotec) {
*p = '\0';
break;
} else if (c == '\0') {
yyerror("syntax error");
return (findeol());
}
if (p + 1 >= buf + sizeof(buf) - 1) {
yyerror("string too long");
return (findeol());
}
*p++ = c;
}
yylval.v.string = strdup(buf);
if (yylval.v.string == NULL)
err(1, "yylex: strdup");
return (STRING);
}
#define allowed_to_end_number(x) \
(isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
if (c == '-' || isdigit(c)) {
do {
*p++ = c;
if ((size_t)(p-buf) >= sizeof(buf)) {
yyerror("string too long");
return (findeol());
}
} while ((c = lgetc(0)) != EOF && isdigit(c));
lungetc(c);
if (p == buf + 1 && buf[0] == '-')
goto nodigits;
if (c == EOF || allowed_to_end_number(c)) {
const char *errstr = NULL;
*p = '\0';
yylval.v.number = strtonum(buf, LLONG_MIN,
LLONG_MAX, &errstr);
if (errstr) {
yyerror("\"%s\" invalid number: %s",
buf, errstr);
return (findeol());
}
return (NUMBER);
} else {
nodigits:
while (p > buf + 1)
lungetc((unsigned char)*--p);
c = (unsigned char)*--p;
if (c == '-')
return (c);
}
}
#define allowed_in_string(x) \
(isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
x != '{' && x != '}' && \
x != '!' && x != '=' && x != '#' && \
x != ','))
if (isalnum(c) || c == ':' || c == '_') {
do {
*p++ = c;
if ((size_t)(p-buf) >= sizeof(buf)) {
yyerror("string too long");
return (findeol());
}
} while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
lungetc(c);
*p = '\0';
if ((token = lookup(buf)) == STRING)
if ((yylval.v.string = strdup(buf)) == NULL)
err(1, "yylex: strdup");
return (token);
}
if (c == '\n') {
yylval.lineno = file->lineno;
file->lineno++;
}
if (c == EOF)
return (0);
return (c);
}
int
check_file_secrecy(int fd, const char *fname)
{
struct stat st;
if (fstat(fd, &st)) {
log_warn("cannot stat %s", fname);
return (-1);
}
if (st.st_uid != 0 && st.st_uid != getuid()) {
log_warnx("%s: owner not root or current user", fname);
return (-1);
}
if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
log_warnx("%s: group writable or world read/writable", fname);
return (-1);
}
return (0);
}
struct file *
pushfile(const char *name, int secret)
{
struct file *nfile;
if ((nfile = calloc(1, sizeof(struct file))) == NULL) {
log_warn("calloc");
return (NULL);
}
if ((nfile->name = strdup(name)) == NULL) {
log_warn("strdup");
free(nfile);
return (NULL);
}
if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
log_warn("%s", nfile->name);
free(nfile->name);
free(nfile);
return (NULL);
} else if (secret &&
check_file_secrecy(fileno(nfile->stream), nfile->name)) {
fclose(nfile->stream);
free(nfile->name);
free(nfile);
return (NULL);
}
nfile->lineno = TAILQ_EMPTY(&files) ? 1 : 0;
nfile->ungetsize = 16;
nfile->ungetbuf = malloc(nfile->ungetsize);
if (nfile->ungetbuf == NULL) {
log_warn("malloc");
fclose(nfile->stream);
free(nfile->name);
free(nfile);
return (NULL);
}
TAILQ_INSERT_TAIL(&files, nfile, entry);
return (nfile);
}
int
popfile(void)
{
struct file *prev;
if ((prev = TAILQ_PREV(file, files, entry)) != NULL)
prev->errors += file->errors;
TAILQ_REMOVE(&files, file, entry);
fclose(file->stream);
free(file->name);
free(file->ungetbuf);
free(file);
file = prev;
return (file ? 0 : EOF);
}
struct rad_conf *
parse_config(char *filename)
{
struct sym *sym, *next;
struct ra_iface_conf *iface;
conf = config_new_empty();
ra_options = NULL;
file = pushfile(filename, 0);
if (file == NULL) {
free(conf);
return (NULL);
}
topfile = file;
yyparse();
errors = file->errors;
popfile();
/* Free macros and check which have not been used. */
TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
if ((cmd_opts & OPT_VERBOSE2) && !sym->used)
fprintf(stderr, "warning: macro '%s' not used\n",
sym->nam);
if (!sym->persist) {
free(sym->nam);
free(sym->val);
TAILQ_REMOVE(&symhead, sym, entry);
free(sym);
}
}
if (errors) {
clear_config(conf);
return (NULL);
}
if (!SIMPLEQ_EMPTY(&conf->ra_options.ra_rdnss_list) ||
!SIMPLEQ_EMPTY(&conf->ra_options.ra_dnssl_list)) {
SIMPLEQ_FOREACH(iface, &conf->ra_iface_list, entry)
copy_dns_options(&conf->ra_options,
&iface->ra_options);
}
if (!SIMPLEQ_EMPTY(&conf->ra_options.ra_pref64_list)) {
SIMPLEQ_FOREACH(iface, &conf->ra_iface_list, entry)
copy_pref64_options(&conf->ra_options,
&iface->ra_options);
}
return (conf);
}
void
copy_dns_options(const struct ra_options_conf *src, struct ra_options_conf *dst)
{
struct ra_rdnss_conf *ra_rdnss, *nra_rdnss;
struct ra_dnssl_conf *ra_dnssl, *nra_dnssl;
if (SIMPLEQ_EMPTY(&dst->ra_rdnss_list)) {
SIMPLEQ_FOREACH(ra_rdnss, &src->ra_rdnss_list, entry) {
if ((nra_rdnss = calloc(1, sizeof(*nra_rdnss))) == NULL)
err(1, "%s", __func__);
memcpy(nra_rdnss, ra_rdnss, sizeof(*nra_rdnss));
SIMPLEQ_INSERT_TAIL(&dst->ra_rdnss_list, nra_rdnss,
entry);
}
dst->rdnss_count = src->rdnss_count;
}
if (SIMPLEQ_EMPTY(&dst->ra_dnssl_list)) {
SIMPLEQ_FOREACH(ra_dnssl, &src->ra_dnssl_list, entry) {
if ((nra_dnssl = calloc(1, sizeof(*nra_dnssl))) == NULL)
err(1, "%s", __func__);
memcpy(nra_dnssl, ra_dnssl, sizeof(*nra_dnssl));
SIMPLEQ_INSERT_TAIL(&dst->ra_dnssl_list, nra_dnssl,
entry);
}
dst->dnssl_len = src->dnssl_len;
}
}
void
copy_pref64_options(const struct ra_options_conf *src, struct ra_options_conf
*dst)
{
struct ra_pref64_conf *pref64, *npref64;
SIMPLEQ_FOREACH(pref64, &src->ra_pref64_list, entry) {
if ((npref64 = calloc(1, sizeof(*npref64))) == NULL)
err(1, "%s", __func__);
memcpy(npref64, pref64, sizeof(*npref64));
SIMPLEQ_INSERT_TAIL(&dst->ra_pref64_list, npref64, entry);
}
}
int
symset(const char *nam, const char *val, int persist)
{
struct sym *sym;
TAILQ_FOREACH(sym, &symhead, entry) {
if (strcmp(nam, sym->nam) == 0)
break;
}
if (sym != NULL) {
if (sym->persist == 1)
return (0);
else {
free(sym->nam);
free(sym->val);
TAILQ_REMOVE(&symhead, sym, entry);
free(sym);
}
}
if ((sym = calloc(1, sizeof(*sym))) == NULL)
return (-1);
sym->nam = strdup(nam);
if (sym->nam == NULL) {
free(sym);
return (-1);
}
sym->val = strdup(val);
if (sym->val == NULL) {
free(sym->nam);
free(sym);
return (-1);
}
sym->used = 0;
sym->persist = persist;
TAILQ_INSERT_TAIL(&symhead, sym, entry);
return (0);
}
int
cmdline_symset(char *s)
{
char *sym, *val;
int ret;
if ((val = strrchr(s, '=')) == NULL)
return (-1);
sym = strndup(s, val - s);
if (sym == NULL)
errx(1, "%s: strndup", __func__);
ret = symset(sym, val + 1, 1);
free(sym);
return (ret);
}
char *
symget(const char *nam)
{
struct sym *sym;
TAILQ_FOREACH(sym, &symhead, entry) {
if (strcmp(nam, sym->nam) == 0) {
sym->used = 1;
return (sym->val);
}
}
return (NULL);
}
struct ra_prefix_conf *
conf_get_ra_prefix(struct in6_addr *addr, int prefixlen)
{
struct ra_prefix_conf *prefix;
if (addr == NULL) {
if (ra_iface_conf->autoprefix != NULL)
return (ra_iface_conf->autoprefix);
} else {
SIMPLEQ_FOREACH(prefix, &ra_iface_conf->ra_prefix_list, entry) {
if (prefix->prefixlen == prefixlen && memcmp(addr,
&prefix->prefix, sizeof(*addr)) == 0)
return (prefix);
}
}
prefix = calloc(1, sizeof(*prefix));
if (prefix == NULL)
err(1, "%s", __func__);
prefix->prefixlen = prefixlen;
prefix->vltime = ADV_VALID_LIFETIME;
prefix->pltime = ADV_PREFERRED_LIFETIME;
prefix->lflag = 1;
prefix->aflag = 1;
if (addr == NULL)
ra_iface_conf->autoprefix = prefix;
else {
prefix->prefix = *addr;
SIMPLEQ_INSERT_TAIL(&ra_iface_conf->ra_prefix_list, prefix,
entry);
}
return (prefix);
}
struct ra_pref64_conf *
conf_get_ra_pref64(struct in6_addr *addr, int prefixlen)
{
struct ra_pref64_conf *pref64;
SIMPLEQ_FOREACH(pref64, &ra_options->ra_pref64_list, entry) {
if (pref64->prefixlen == prefixlen && memcmp(addr,
&pref64->prefix, sizeof(*addr)) == 0)
return (pref64);
}
pref64 = calloc(1, sizeof(*pref64));
if (pref64 == NULL)
err(1, "%s", __func__);
pref64->prefixlen = prefixlen;
pref64->ltime = ADV_DEFAULT_LIFETIME;
pref64->prefix = *addr;
SIMPLEQ_INSERT_TAIL(&ra_options->ra_pref64_list, pref64, entry);
return (pref64);
}
struct ra_iface_conf *
conf_get_ra_iface(char *name)
{
struct ra_iface_conf *iface;
size_t n;
SIMPLEQ_FOREACH(iface, &conf->ra_iface_list, entry) {
if (strcmp(name, iface->name) == 0)
return (iface);
}
iface = calloc(1, sizeof(*iface));
if (iface == NULL)
errx(1, "%s: calloc", __func__);
n = strlcpy(iface->name, name, sizeof(iface->name));
if (n >= sizeof(iface->name))
errx(1, "%s: name too long", __func__);
/* Inherit attributes set in global section. */
iface->ra_options = conf->ra_options;
SIMPLEQ_INIT(&iface->ra_prefix_list);
SIMPLEQ_INIT(&iface->ra_options.ra_rdnss_list);
iface->ra_options.rdnss_count = 0;
SIMPLEQ_INIT(&iface->ra_options.ra_dnssl_list);
iface->ra_options.dnssl_len = 0;
SIMPLEQ_INIT(&iface->ra_options.ra_pref64_list);
SIMPLEQ_INSERT_TAIL(&conf->ra_iface_list, iface, entry);
return (iface);
}
void
clear_config(struct rad_conf *xconf)
{
struct ra_iface_conf *iface;
free_dns_options(&xconf->ra_options);
while((iface = SIMPLEQ_FIRST(&xconf->ra_iface_list)) != NULL) {
SIMPLEQ_REMOVE_HEAD(&xconf->ra_iface_list, entry);
free_ra_iface_conf(iface);
}
free(xconf);
}
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