1843 lines
35 KiB
Plaintext
1843 lines
35 KiB
Plaintext
/* $OpenBSD: parse.y,v 1.63 2022/12/28 21:30:16 jmc Exp $ */
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/*
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* Copyright (c) 2004, 2005, 2006 Reyk Floeter <reyk@openbsd.org>
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* Copyright (c) 2002 - 2005 Henning Brauer <henning@openbsd.org>
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* Copyright (c) 2001 Markus Friedl. All rights reserved.
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* Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
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* Copyright (c) 2001 Theo de Raadt. All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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%{
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_arp.h>
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#include <net/if_llc.h>
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#include <net/bpf.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <arpa/inet.h>
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#include <net80211/ieee80211.h>
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#include <net80211/ieee80211_radiotap.h>
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#include <ctype.h>
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#include <errno.h>
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#include <event.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <stdint.h>
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#include <err.h>
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#include "hostapd.h"
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TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
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static struct file {
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TAILQ_ENTRY(file) entry;
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FILE *stream;
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char *name;
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size_t ungetpos;
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size_t ungetsize;
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u_char *ungetbuf;
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int eof_reached;
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int lineno;
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int errors;
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} *file, *topfile;
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struct file *pushfile(const char *, int);
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int popfile(void);
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int check_file_secrecy(int, const char *);
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int yyparse(void);
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int yylex(void);
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int yyerror(const char *, ...)
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__attribute__((__format__ (printf, 1, 2)))
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__attribute__((__nonnull__ (1)));
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int kw_cmp(const void *, const void *);
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int lookup(char *);
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int igetc(void);
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int lgetc(int);
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void lungetc(int);
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int findeol(void);
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TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
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struct sym {
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TAILQ_ENTRY(sym) entry;
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int used;
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int persist;
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char *nam;
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char *val;
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};
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int symset(const char *, const char *, int);
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char *symget(const char *);
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extern struct hostapd_config hostapd_cfg;
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typedef struct {
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union {
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struct {
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u_int8_t lladdr[IEEE80211_ADDR_LEN];
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struct hostapd_table *table;
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u_int32_t flags;
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} reflladdr;
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struct {
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u_int16_t alg;
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u_int16_t transaction;
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} authalg;
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struct in_addr in;
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char *string;
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int64_t number;
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u_int16_t reason;
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enum hostapd_op op;
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struct timeval timeout;
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} v;
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int lineno;
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} YYSTYPE;
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struct hostapd_apme *apme;
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struct hostapd_table *table;
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struct hostapd_entry *entry;
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struct hostapd_frame frame, *frame_ptr;
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struct hostapd_ieee80211_frame *frame_ieee80211;
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#define HOSTAPD_MATCH(_m, _not) { \
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frame.f_flags |= (_not) ? \
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HOSTAPD_FRAME_F_##_m##_N : HOSTAPD_FRAME_F_##_m; \
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}
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#define HOSTAPD_MATCH_TABLE(_m, _not) { \
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frame.f_flags |= HOSTAPD_FRAME_F_##_m##_TABLE | ((_not) ? \
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HOSTAPD_FRAME_F_##_m##_N : HOSTAPD_FRAME_F_##_m); \
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}
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#define HOSTAPD_MATCH_RADIOTAP(_x) { \
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if (hostapd_cfg.c_apme_dlt == DLT_IEEE802_11 || \
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(hostapd_cfg.c_apme_dlt == 0 && \
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HOSTAPD_DLT == DLT_IEEE802_11)) { \
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yyerror("option %s requires radiotap headers", #_x); \
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YYERROR; \
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} \
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frame.f_radiotap |= HOSTAPD_RADIOTAP_F(RSSI); \
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frame.f_flags |= HOSTAPD_FRAME_F_##_x; \
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}
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#define HOSTAPD_IAPP_FLAG(_f, _not) { \
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if (_not) \
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hostapd_cfg.c_iapp.i_flags &= ~(HOSTAPD_IAPP_F_##_f); \
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else \
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hostapd_cfg.c_iapp.i_flags |= (HOSTAPD_IAPP_F_##_f); \
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}
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%}
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%token MODE INTERFACE IAPP HOSTAP MULTICAST BROADCAST SET SEC USEC
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%token HANDLE TYPE SUBTYPE FROM TO BSSID WITH FRAME RADIOTAP NWID PASSIVE
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%token MANAGEMENT DATA PROBE BEACON ATIM ANY DS NO DIR RESEND RANDOM
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%token AUTH DEAUTH ASSOC DISASSOC REASSOC REQUEST RESPONSE PCAP RATE
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%token ERROR CONST TABLE NODE DELETE ADD LOG VERBOSE LIMIT QUICK SKIP
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%token REASON UNSPECIFIED EXPIRE LEAVE ASSOC TOOMANY NOT AUTHED ASSOCED
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%token RESERVED RSN REQUIRED INCONSISTENT IE INVALID MIC FAILURE OPEN
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%token ADDRESS PORT ON NOTIFY TTL INCLUDE ROUTE ROAMING RSSI TXRATE FREQ
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%token HOPPER DELAY NE LE GE ARROW
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%token <v.string> STRING
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%token <v.number> NUMBER
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%type <v.in> ipv4addr
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%type <v.reflladdr> refaddr, lladdr, randaddr, frmactionaddr, frmmatchaddr
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%type <v.reason> frmreason_l
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%type <v.string> table
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%type <v.string> string
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%type <v.authalg> authalg
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%type <v.op> unaryop
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%type <v.number> percent
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%type <v.number> txrate
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%type <v.number> freq
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%type <v.number> not
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%type <v.timeout> timeout
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%%
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/*
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* Configuration grammar
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*/
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grammar : /* empty */
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| grammar '\n'
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| grammar include '\n'
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| grammar tabledef '\n'
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| grammar option '\n'
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| grammar event '\n'
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| grammar varset '\n'
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| grammar error '\n' { file->errors++; }
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;
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include : INCLUDE STRING
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{
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struct file *nfile;
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if ((nfile = pushfile($2, 1)) == NULL) {
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yyerror("failed to include file %s", $2);
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free($2);
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YYERROR;
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}
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free($2);
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file = nfile;
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lungetc('\n');
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}
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option : SET HOSTAP INTERFACE hostapifaces
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{
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if (!TAILQ_EMPTY(&hostapd_cfg.c_apmes))
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hostapd_cfg.c_flags |= HOSTAPD_CFG_F_APME;
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}
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| SET HOSTAP HOPPER INTERFACE hopperifaces
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| SET HOSTAP HOPPER DELAY timeout
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{
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bcopy(&$5, &hostapd_cfg.c_apme_hopdelay,
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sizeof(struct timeval));
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}
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| SET HOSTAP MODE hostapmode
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| SET IAPP INTERFACE STRING passive
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{
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if (strlcpy(hostapd_cfg.c_iapp.i_iface, $4,
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sizeof(hostapd_cfg.c_iapp.i_iface)) >=
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sizeof(hostapd_cfg.c_iapp.i_iface)) {
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yyerror("invalid interface %s", $4);
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free($4);
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YYERROR;
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}
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hostapd_cfg.c_flags |= HOSTAPD_CFG_F_IAPP;
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hostapd_log(HOSTAPD_LOG_DEBUG,
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"%s: IAPP interface added", $4);
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free($4);
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}
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| SET IAPP MODE iappmode
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| SET IAPP ADDRESS ROAMING TABLE table
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{
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if ((hostapd_cfg.c_iapp.i_addr_tbl =
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hostapd_table_lookup(&hostapd_cfg, $6)) == NULL) {
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yyerror("undefined table <%s>", $6);
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free($6);
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YYERROR;
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}
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free($6);
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}
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| SET IAPP ROUTE ROAMING TABLE table
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{
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if ((hostapd_cfg.c_iapp.i_route_tbl =
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hostapd_table_lookup(&hostapd_cfg, $6)) == NULL) {
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yyerror("undefined table <%s>", $6);
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free($6);
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YYERROR;
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}
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free($6);
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}
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| SET IAPP HANDLE SUBTYPE iappsubtypes
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;
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iappmode : MULTICAST iappmodeaddr iappmodeport iappmodettl
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{
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hostapd_cfg.c_flags &= ~HOSTAPD_CFG_F_BRDCAST;
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}
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| BROADCAST iappmodeport
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{
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hostapd_cfg.c_flags |= HOSTAPD_CFG_F_BRDCAST;
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}
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;
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iappmodeaddr : /* empty */
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| ADDRESS ipv4addr
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{
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bcopy(&$2, &hostapd_cfg.c_iapp.i_multicast.sin_addr,
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sizeof(struct in_addr));
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}
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;
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iappmodeport : /* empty */
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| PORT NUMBER
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{
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if ($2 < 0 || $2 > UINT16_MAX) {
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yyerror("port out of range: %lld", $2);
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YYERROR;
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}
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hostapd_cfg.c_iapp.i_addr.sin_port = htons($2);
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}
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;
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iappmodettl : /* empty */
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| TTL NUMBER
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{
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if ($2 < 1 || $2 > UINT8_MAX) {
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yyerror("ttl out of range: %lld", $2);
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YYERROR;
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}
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hostapd_cfg.c_iapp.i_ttl = $2;
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}
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;
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hostapmode : RADIOTAP
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{
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hostapd_cfg.c_apme_dlt = DLT_IEEE802_11_RADIO;
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}
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| PCAP
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{
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hostapd_cfg.c_apme_dlt = DLT_IEEE802_11;
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}
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;
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hostapifaces : '{' optnl hostapifacelist optnl '}'
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| hostapiface
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;
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hostapifacelist : hostapiface
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| hostapifacelist comma hostapiface
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;
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hostapiface : STRING
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{
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if (hostapd_apme_add(&hostapd_cfg, $1) != 0) {
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yyerror("failed to add hostap interface");
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YYERROR;
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}
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free($1);
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}
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;
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hopperifaces : '{' optnl hopperifacelist optnl '}'
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| hopperiface
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;
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hopperifacelist : hopperiface
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| hopperifacelist comma hopperiface
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;
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hopperiface : STRING
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{
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if ((apme = hostapd_apme_addhopper(&hostapd_cfg,
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$1)) == NULL) {
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yyerror("failed to add hopper %s", $1);
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free($1);
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YYERROR;
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}
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free($1);
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}
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;
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hostapmatch : /* empty */
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| ON not STRING
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{
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if ((frame.f_apme =
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hostapd_apme_lookup(&hostapd_cfg, $3)) == NULL) {
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yyerror("undefined hostap interface");
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free($3);
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YYERROR;
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}
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free($3);
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HOSTAPD_MATCH(APME, $2);
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}
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;
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event : HOSTAP HANDLE
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{
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bzero(&frame, sizeof(struct hostapd_frame));
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/* IEEE 802.11 frame to match */
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frame_ieee80211 = &frame.f_frame;
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} eventopt hostapmatch frmmatch {
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/* IEEE 802.11 raw frame to send as an action */
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frame_ieee80211 = &frame.f_action_data.a_frame;
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} action limit rate {
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if ((frame_ptr = calloc(1, sizeof(struct hostapd_frame)))
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== NULL) {
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yyerror("calloc");
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YYERROR;
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}
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if (gettimeofday(&frame.f_last, NULL) == -1)
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hostapd_fatal("gettimeofday");
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timeradd(&frame.f_last, &frame.f_limit, &frame.f_then);
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bcopy(&frame, frame_ptr, sizeof(struct hostapd_frame));
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TAILQ_INSERT_TAIL(&hostapd_cfg.c_frames,
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frame_ptr, f_entries);
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}
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;
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iappsubtypes : '{' optnl iappsubtypelist optnl '}'
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| iappsubtype
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;
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iappsubtypelist : iappsubtype
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| iappsubtypelist comma iappsubtype
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;
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iappsubtype : not ADD NOTIFY
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{
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HOSTAPD_IAPP_FLAG(ADD_NOTIFY, $1);
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}
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| not RADIOTAP
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{
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HOSTAPD_IAPP_FLAG(RADIOTAP, $1);
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}
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| not ROUTE ROAMING
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{
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HOSTAPD_IAPP_FLAG(ROAMING_ROUTE, $1);
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}
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| not ADDRESS ROAMING
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{
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HOSTAPD_IAPP_FLAG(ROAMING_ADDRESS, $1);
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}
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;
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eventopt : /* empty */
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{
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frame.f_flags |= HOSTAPD_FRAME_F_RET_OK;
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}
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| QUICK
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{
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frame.f_flags |= HOSTAPD_FRAME_F_RET_QUICK;
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}
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| SKIP
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{
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frame.f_flags |= HOSTAPD_FRAME_F_RET_SKIP;
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}
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;
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action : /* empty */
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{
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frame.f_action = HOSTAPD_ACTION_NONE;
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}
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| WITH LOG verbose
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{
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frame.f_action = HOSTAPD_ACTION_LOG;
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}
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| WITH FRAME frmaction
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{
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frame.f_action = HOSTAPD_ACTION_FRAME;
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}
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| WITH IAPP iapp
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| WITH NODE nodeopt frmactionaddr
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{
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if (($4.flags & HOSTAPD_ACTION_F_REF_M) == 0) {
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bcopy($4.lladdr, frame.f_action_data.a_lladdr,
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IEEE80211_ADDR_LEN);
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} else
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frame.f_action_data.a_flags |= $4.flags;
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}
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| WITH RESEND
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{
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frame.f_action = HOSTAPD_ACTION_RESEND;
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}
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;
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verbose : /* empty */
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| VERBOSE
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{
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frame.f_action_flags |= HOSTAPD_ACTION_VERBOSE;
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}
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;
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iapp : TYPE RADIOTAP verbose
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{
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frame.f_action = HOSTAPD_ACTION_RADIOTAP;
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}
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;
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nodeopt : DELETE
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{
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frame.f_action = HOSTAPD_ACTION_DELNODE;
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}
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| ADD
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{
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frame.f_action = HOSTAPD_ACTION_ADDNODE;
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}
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;
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frmmatch : ANY
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| frm frmmatchtype frmmatchdir frmmatchfrom frmmatchto
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frmmatchbssid frmmatchrtap
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;
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frm : /* empty */
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| FRAME
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;
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frmaction : frmactiontype frmactiondir frmactionfrom frmactionto frmactionbssid
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;
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limit : /* empty */
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| LIMIT NUMBER SEC
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{
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if ($2 < 0 || $2 > LONG_MAX) {
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yyerror("limit out of range: %lld sec", $2);
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YYERROR;
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}
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frame.f_limit.tv_sec = $2;
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}
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| LIMIT NUMBER USEC
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{
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if ($2 < 0 || $2 > LONG_MAX) {
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yyerror("limit out of range: %lld usec", $2);
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YYERROR;
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}
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frame.f_limit.tv_sec = $2 / 1000000;
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frame.f_limit.tv_usec = $2 % 1000000;
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}
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;
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rate : /* empty */
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| RATE NUMBER '/' NUMBER SEC
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{
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if (($2 < 1 || $2 > LONG_MAX) ||
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($4 < 1 || $4 > LONG_MAX)) {
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yyerror("rate out of range: %lld/%lld sec",
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$2, $4);
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YYERROR;
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}
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if (!($2 && $4)) {
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yyerror("invalid rate");
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YYERROR;
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}
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frame.f_rate = $2;
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frame.f_rate_intval = $4;
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}
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;
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|
frmmatchtype : /* any */
|
|
| TYPE ANY
|
|
| TYPE not DATA
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_TYPE_DATA;
|
|
HOSTAPD_MATCH(TYPE, $2);
|
|
}
|
|
| TYPE not MANAGEMENT frmmatchmgmt
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_TYPE_MGT;
|
|
HOSTAPD_MATCH(TYPE, $2);
|
|
}
|
|
;
|
|
|
|
frmmatchmgmt : /* any */
|
|
| SUBTYPE ANY
|
|
| SUBTYPE not frmsubtype
|
|
{
|
|
HOSTAPD_MATCH(SUBTYPE, $2);
|
|
}
|
|
;
|
|
|
|
frmsubtype : PROBE REQUEST frmelems
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_PROBE_REQ;
|
|
}
|
|
| PROBE RESPONSE frmelems
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_PROBE_RESP;
|
|
}
|
|
| BEACON frmelems
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_BEACON;
|
|
}
|
|
| ATIM
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_ATIM;
|
|
}
|
|
| AUTH frmauth
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_AUTH;
|
|
}
|
|
| DEAUTH frmreason
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_DEAUTH;
|
|
}
|
|
| ASSOC REQUEST
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ;
|
|
}
|
|
| DISASSOC frmreason
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_DISASSOC;
|
|
}
|
|
| ASSOC RESPONSE
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_RESP;
|
|
}
|
|
| REASSOC REQUEST
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_REASSOC_REQ;
|
|
}
|
|
| REASSOC RESPONSE
|
|
{
|
|
frame_ieee80211->i_fc[0] |=
|
|
IEEE80211_FC0_SUBTYPE_REASSOC_RESP;
|
|
}
|
|
;
|
|
|
|
frmelems : /* empty */
|
|
| frmelems_l
|
|
;
|
|
|
|
frmelems_l : frmelems_l frmelem
|
|
| frmelem
|
|
;
|
|
|
|
frmelem : NWID not STRING
|
|
;
|
|
|
|
frmauth : /* empty */
|
|
| authalg
|
|
{
|
|
if ((frame_ieee80211->i_data = malloc(6)) == NULL) {
|
|
yyerror("failed to allocate auth");
|
|
YYERROR;
|
|
}
|
|
((u_int16_t *)frame_ieee80211->i_data)[0] =
|
|
$1.alg;
|
|
((u_int16_t *)frame_ieee80211->i_data)[1] =
|
|
$1.transaction;
|
|
((u_int16_t *)frame_ieee80211->i_data)[0] = 0;
|
|
frame_ieee80211->i_data_len = 6;
|
|
}
|
|
;
|
|
|
|
authalg : OPEN REQUEST
|
|
{
|
|
$$.alg = htole16(IEEE80211_AUTH_ALG_OPEN);
|
|
$$.transaction = htole16(IEEE80211_AUTH_OPEN_REQUEST);
|
|
}
|
|
| OPEN RESPONSE
|
|
{
|
|
$$.alg = htole16(IEEE80211_AUTH_ALG_OPEN);
|
|
$$.transaction = htole16(IEEE80211_AUTH_OPEN_RESPONSE);
|
|
}
|
|
;
|
|
|
|
frmreason : frmreason_l
|
|
{
|
|
if ($1 != 0) {
|
|
if ((frame_ieee80211->i_data =
|
|
malloc(sizeof(u_int16_t))) == NULL) {
|
|
yyerror("failed to allocate "
|
|
"reason code %u", $1);
|
|
YYERROR;
|
|
}
|
|
*(u_int16_t *)frame_ieee80211->i_data =
|
|
htole16($1);
|
|
frame_ieee80211->i_data_len = sizeof(u_int16_t);
|
|
}
|
|
}
|
|
;
|
|
|
|
frmreason_l : /* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| REASON UNSPECIFIED
|
|
{
|
|
$$ = IEEE80211_REASON_UNSPECIFIED;
|
|
}
|
|
| REASON AUTH EXPIRE
|
|
{
|
|
$$ = IEEE80211_REASON_AUTH_EXPIRE;
|
|
}
|
|
| REASON AUTH LEAVE
|
|
{
|
|
$$ = IEEE80211_REASON_AUTH_LEAVE;
|
|
}
|
|
| REASON ASSOC EXPIRE
|
|
{
|
|
$$ = IEEE80211_REASON_ASSOC_EXPIRE;
|
|
}
|
|
| REASON ASSOC TOOMANY
|
|
{
|
|
$$ = IEEE80211_REASON_ASSOC_TOOMANY;
|
|
}
|
|
| REASON NOT AUTHED
|
|
{
|
|
$$ = IEEE80211_REASON_NOT_AUTHED;
|
|
}
|
|
| REASON NOT ASSOCED
|
|
{
|
|
$$ = IEEE80211_REASON_NOT_ASSOCED;
|
|
}
|
|
| REASON ASSOC LEAVE
|
|
{
|
|
$$ = IEEE80211_REASON_ASSOC_LEAVE;
|
|
}
|
|
| REASON ASSOC NOT AUTHED
|
|
{
|
|
$$ = IEEE80211_REASON_NOT_AUTHED;
|
|
}
|
|
| REASON RESERVED
|
|
{
|
|
$$ = 10; /* XXX unknown */
|
|
}
|
|
| REASON RSN REQUIRED
|
|
{
|
|
$$ = IEEE80211_REASON_RSN_REQUIRED;
|
|
}
|
|
| REASON RSN INCONSISTENT
|
|
{
|
|
$$ = IEEE80211_REASON_RSN_INCONSISTENT;
|
|
}
|
|
| REASON IE INVALID
|
|
{
|
|
$$ = IEEE80211_REASON_IE_INVALID;
|
|
}
|
|
| REASON MIC FAILURE
|
|
{
|
|
$$ = IEEE80211_REASON_MIC_FAILURE;
|
|
}
|
|
;
|
|
|
|
frmmatchdir : /* any */
|
|
| DIR ANY
|
|
| DIR not frmdir
|
|
{
|
|
HOSTAPD_MATCH(DIR, $2);
|
|
}
|
|
;
|
|
|
|
frmdir : NO DS
|
|
{
|
|
frame_ieee80211->i_fc[1] |= IEEE80211_FC1_DIR_NODS;
|
|
}
|
|
| TO DS
|
|
{
|
|
frame_ieee80211->i_fc[1] |= IEEE80211_FC1_DIR_TODS;
|
|
}
|
|
| FROM DS
|
|
{
|
|
frame_ieee80211->i_fc[1] |= IEEE80211_FC1_DIR_FROMDS;
|
|
}
|
|
| DS TO DS
|
|
{
|
|
frame_ieee80211->i_fc[1] |= IEEE80211_FC1_DIR_DSTODS;
|
|
}
|
|
;
|
|
|
|
frmmatchfrom : /* any */
|
|
| FROM ANY
|
|
| FROM not frmmatchaddr
|
|
{
|
|
if (($3.flags & HOSTAPD_ACTION_F_OPT_TABLE) == 0) {
|
|
bcopy($3.lladdr, &frame_ieee80211->i_from,
|
|
IEEE80211_ADDR_LEN);
|
|
HOSTAPD_MATCH(FROM, $2);
|
|
} else {
|
|
frame.f_from = $3.table;
|
|
HOSTAPD_MATCH_TABLE(FROM, $2);
|
|
}
|
|
}
|
|
;
|
|
|
|
frmmatchto : /* any */
|
|
| TO ANY
|
|
| TO not frmmatchaddr
|
|
{
|
|
if (($3.flags & HOSTAPD_ACTION_F_OPT_TABLE) == 0) {
|
|
bcopy($3.lladdr, &frame_ieee80211->i_to,
|
|
IEEE80211_ADDR_LEN);
|
|
HOSTAPD_MATCH(TO, $2);
|
|
} else {
|
|
frame.f_to = $3.table;
|
|
HOSTAPD_MATCH_TABLE(TO, $2);
|
|
}
|
|
}
|
|
;
|
|
|
|
frmmatchbssid : /* any */
|
|
| BSSID ANY
|
|
| BSSID not frmmatchaddr
|
|
{
|
|
if (($3.flags & HOSTAPD_ACTION_F_OPT_TABLE) == 0) {
|
|
bcopy($3.lladdr, &frame_ieee80211->i_bssid,
|
|
IEEE80211_ADDR_LEN);
|
|
HOSTAPD_MATCH(BSSID, $2);
|
|
} else {
|
|
frame.f_bssid = $3.table;
|
|
HOSTAPD_MATCH_TABLE(BSSID, $2);
|
|
}
|
|
}
|
|
;
|
|
|
|
frmmatchrtap : /* empty */
|
|
| frmmatchrtap_l
|
|
;
|
|
|
|
frmmatchrtap_l : frmmatchrtap_l frmmatchrtapopt
|
|
| frmmatchrtapopt
|
|
;
|
|
|
|
frmmatchrtapopt : RSSI unaryop percent
|
|
{
|
|
if (($2 == HOSTAPD_OP_GT && $3 == 100) ||
|
|
($2 == HOSTAPD_OP_LE && $3 == 100) ||
|
|
($2 == HOSTAPD_OP_LT && $3 == 0) ||
|
|
($2 == HOSTAPD_OP_GE && $3 == 0)) {
|
|
yyerror("absurd unary comparison");
|
|
YYERROR;
|
|
}
|
|
|
|
frame.f_rssi_op = $2;
|
|
frame.f_rssi = $3;
|
|
HOSTAPD_MATCH_RADIOTAP(RSSI);
|
|
}
|
|
| TXRATE unaryop txrate
|
|
{
|
|
frame.f_txrate_op = $2;
|
|
frame.f_txrate = $3;
|
|
HOSTAPD_MATCH_RADIOTAP(RATE);
|
|
}
|
|
| FREQ unaryop freq
|
|
{
|
|
frame.f_chan_op = $2;
|
|
frame.f_chan = $3;
|
|
HOSTAPD_MATCH_RADIOTAP(CHANNEL);
|
|
}
|
|
;
|
|
|
|
frmmatchaddr : table
|
|
{
|
|
if (($$.table =
|
|
hostapd_table_lookup(&hostapd_cfg, $1)) == NULL) {
|
|
yyerror("undefined table <%s>", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
$$.flags = HOSTAPD_ACTION_F_OPT_TABLE;
|
|
free($1);
|
|
}
|
|
| lladdr
|
|
{
|
|
bcopy($1.lladdr, $$.lladdr, IEEE80211_ADDR_LEN);
|
|
$$.flags = HOSTAPD_ACTION_F_OPT_LLADDR;
|
|
}
|
|
;
|
|
|
|
frmactiontype : TYPE DATA
|
|
{
|
|
frame_ieee80211->i_fc[0] |= IEEE80211_FC0_TYPE_DATA;
|
|
}
|
|
| TYPE MANAGEMENT frmactionmgmt
|
|
{
|
|
frame_ieee80211->i_fc[0] |= IEEE80211_FC0_TYPE_MGT;
|
|
}
|
|
;
|
|
|
|
frmactionmgmt : SUBTYPE frmsubtype
|
|
;
|
|
|
|
frmactiondir : /* empty */
|
|
{
|
|
frame.f_action_data.a_flags |=
|
|
HOSTAPD_ACTION_F_OPT_DIR_AUTO;
|
|
}
|
|
| DIR frmdir
|
|
;
|
|
|
|
frmactionfrom : FROM frmactionaddr
|
|
{
|
|
if (($2.flags & HOSTAPD_ACTION_F_REF_M) == 0) {
|
|
bcopy($2.lladdr, frame_ieee80211->i_from,
|
|
IEEE80211_ADDR_LEN);
|
|
} else
|
|
frame.f_action_data.a_flags |=
|
|
($2.flags << HOSTAPD_ACTION_F_REF_FROM_S);
|
|
}
|
|
;
|
|
|
|
frmactionto : TO frmactionaddr
|
|
{
|
|
if (($2.flags & HOSTAPD_ACTION_F_REF_M) == 0) {
|
|
bcopy($2.lladdr, frame_ieee80211->i_to,
|
|
IEEE80211_ADDR_LEN);
|
|
} else
|
|
frame.f_action_data.a_flags |=
|
|
($2.flags << HOSTAPD_ACTION_F_REF_TO_S);
|
|
}
|
|
;
|
|
|
|
frmactionbssid : BSSID frmactionaddr
|
|
{
|
|
if (($2.flags & HOSTAPD_ACTION_F_REF_M) == 0) {
|
|
bcopy($2.lladdr, frame_ieee80211->i_bssid,
|
|
IEEE80211_ADDR_LEN);
|
|
} else
|
|
frame.f_action_data.a_flags |=
|
|
($2.flags << HOSTAPD_ACTION_F_REF_BSSID_S);
|
|
}
|
|
;
|
|
|
|
frmactionaddr : lladdr
|
|
{
|
|
bcopy($1.lladdr, $$.lladdr, IEEE80211_ADDR_LEN);
|
|
$$.flags = $1.flags;
|
|
}
|
|
| randaddr
|
|
{
|
|
$$.flags = $1.flags;
|
|
}
|
|
| refaddr
|
|
{
|
|
$$.flags = $1.flags;
|
|
}
|
|
;
|
|
|
|
table : '<' STRING '>' {
|
|
if (strlen($2) >= HOSTAPD_TABLE_NAMELEN) {
|
|
yyerror("table name %s too long, max %u",
|
|
$2, HOSTAPD_TABLE_NAMELEN - 1);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
tabledef : TABLE table {
|
|
if ((table =
|
|
hostapd_table_add(&hostapd_cfg, $2)) == NULL) {
|
|
yyerror("failed to add table: %s", $2);
|
|
free($2);
|
|
YYERROR;
|
|
}
|
|
free($2);
|
|
} tableopts {
|
|
table = NULL;
|
|
}
|
|
;
|
|
|
|
tableopts : /* empty */
|
|
| tableopts_l
|
|
;
|
|
|
|
tableopts_l : tableopts_l tableopt
|
|
| tableopt
|
|
;
|
|
|
|
tableopt : CONST {
|
|
if (table->t_flags & HOSTAPD_TABLE_F_CONST) {
|
|
yyerror("option already specified");
|
|
YYERROR;
|
|
}
|
|
table->t_flags |= HOSTAPD_TABLE_F_CONST;
|
|
}
|
|
| '{' optnl '}'
|
|
| '{' optnl tableaddrlist optnl '}'
|
|
;
|
|
|
|
string : string STRING
|
|
{
|
|
if (asprintf(&$$, "%s %s", $1, $2) == -1)
|
|
hostapd_fatal("string: asprintf");
|
|
free($1);
|
|
free($2);
|
|
}
|
|
| STRING
|
|
;
|
|
|
|
varset : STRING '=' string
|
|
{
|
|
char *s = $1;
|
|
while (*s++) {
|
|
if (isspace((unsigned char)*s)) {
|
|
yyerror("macro name cannot contain "
|
|
"whitespace");
|
|
free($1);
|
|
free($3);
|
|
YYERROR;
|
|
}
|
|
}
|
|
if (symset($1, $3, 0) == -1)
|
|
hostapd_fatal("cannot store variable");
|
|
free($1);
|
|
free($3);
|
|
}
|
|
;
|
|
|
|
refaddr : '&' FROM
|
|
{
|
|
$$.flags |= HOSTAPD_ACTION_F_REF_FROM;
|
|
}
|
|
| '&' TO
|
|
{
|
|
$$.flags |= HOSTAPD_ACTION_F_REF_TO;
|
|
}
|
|
| '&' BSSID
|
|
{
|
|
$$.flags |= HOSTAPD_ACTION_F_REF_BSSID;
|
|
}
|
|
;
|
|
|
|
tableaddrlist : tableaddrentry
|
|
| tableaddrlist comma tableaddrentry
|
|
;
|
|
|
|
tableaddrentry : lladdr
|
|
{
|
|
if ((entry = hostapd_entry_add(table,
|
|
$1.lladdr)) == NULL) {
|
|
yyerror("failed to add entry: %s",
|
|
etheraddr_string($1.lladdr));
|
|
YYERROR;
|
|
}
|
|
} tableaddropt {
|
|
entry = NULL;
|
|
}
|
|
;
|
|
|
|
tableaddropt : /* empty */
|
|
| assign ipv4addr ipv4netmask
|
|
{
|
|
entry->e_flags |= HOSTAPD_ENTRY_F_INADDR;
|
|
entry->e_inaddr.in_af = AF_INET;
|
|
bcopy(&$2, &entry->e_inaddr.in_v4,
|
|
sizeof(struct in_addr));
|
|
}
|
|
| mask lladdr
|
|
{
|
|
entry->e_flags |= HOSTAPD_ENTRY_F_MASK;
|
|
bcopy($2.lladdr, entry->e_mask, IEEE80211_ADDR_LEN);
|
|
|
|
/* Update entry position in the table */
|
|
hostapd_entry_update(table, entry);
|
|
}
|
|
;
|
|
|
|
ipv4addr : STRING
|
|
{
|
|
if (inet_net_pton(AF_INET, $1, &$$, sizeof($$)) == -1) {
|
|
yyerror("invalid address: %s\n", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
ipv4netmask : /* empty */
|
|
{
|
|
entry->e_inaddr.in_netmask = -1;
|
|
}
|
|
| '/' NUMBER
|
|
{
|
|
if ($2 < 0 || $2 > 32) {
|
|
yyerror("netmask out of range: %lld", $2);
|
|
YYERROR;
|
|
}
|
|
entry->e_inaddr.in_netmask = $2;
|
|
}
|
|
;
|
|
|
|
lladdr : STRING
|
|
{
|
|
struct ether_addr *ea;
|
|
|
|
if ((ea = ether_aton($1)) == NULL) {
|
|
yyerror("invalid address: %s\n", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
|
|
bcopy(ea, $$.lladdr, IEEE80211_ADDR_LEN);
|
|
$$.flags = HOSTAPD_ACTION_F_OPT_LLADDR;
|
|
}
|
|
;
|
|
|
|
randaddr : RANDOM
|
|
{
|
|
$$.flags |= HOSTAPD_ACTION_F_REF_RANDOM;
|
|
}
|
|
;
|
|
|
|
passive : /* empty */
|
|
| PASSIVE
|
|
{
|
|
hostapd_cfg.c_flags |= HOSTAPD_CFG_F_IAPP_PASSIVE;
|
|
}
|
|
;
|
|
|
|
assign : ARROW
|
|
;
|
|
|
|
mask : '&'
|
|
;
|
|
|
|
comma : /* empty */
|
|
| ',' optnl
|
|
;
|
|
|
|
optnl : /* empty */
|
|
| '\n'
|
|
;
|
|
|
|
not : /* empty */
|
|
{
|
|
$$ = 0;
|
|
}
|
|
| '!'
|
|
{
|
|
$$ = 1;
|
|
}
|
|
| NOT
|
|
{
|
|
$$ = 1;
|
|
}
|
|
;
|
|
|
|
unaryop : /* any */
|
|
{
|
|
$$ = HOSTAPD_OP_EQ;
|
|
}
|
|
| '='
|
|
{
|
|
$$ = HOSTAPD_OP_EQ;
|
|
}
|
|
| '=='
|
|
{
|
|
$$ = HOSTAPD_OP_EQ;
|
|
}
|
|
| '!'
|
|
{
|
|
$$ = HOSTAPD_OP_NE;
|
|
}
|
|
| NE
|
|
{
|
|
$$ = HOSTAPD_OP_NE;
|
|
}
|
|
| LE
|
|
{
|
|
$$ = HOSTAPD_OP_LE;
|
|
}
|
|
| '<'
|
|
{
|
|
$$ = HOSTAPD_OP_LT;
|
|
}
|
|
| GE
|
|
{
|
|
$$ = HOSTAPD_OP_GE;
|
|
}
|
|
| '>'
|
|
{
|
|
$$ = HOSTAPD_OP_GT;
|
|
}
|
|
;
|
|
|
|
percent : STRING
|
|
{
|
|
double val;
|
|
char *cp;
|
|
|
|
val = strtod($1, &cp);
|
|
if (cp == NULL || strcmp(cp, "%") != 0 ||
|
|
val < 0 || val > 100) {
|
|
yyerror("invalid percentage: %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$ = val;
|
|
}
|
|
;
|
|
|
|
txrate : STRING
|
|
{
|
|
double val;
|
|
char *cp;
|
|
|
|
val = strtod($1, &cp) * 2;
|
|
if (cp == NULL || strcasecmp(cp, "mb") != 0 ||
|
|
val != (int)val) {
|
|
yyerror("invalid rate: %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
$$ = val;
|
|
}
|
|
;
|
|
|
|
freq : STRING
|
|
{
|
|
double val;
|
|
char *cp;
|
|
|
|
val = strtod($1, &cp);
|
|
if (cp != NULL) {
|
|
if (strcasecmp(cp, "ghz") == 0) {
|
|
$$ = val * 1000;
|
|
} else if (strcasecmp(cp, "mhz") == 0) {
|
|
$$ = val;
|
|
} else
|
|
cp = NULL;
|
|
}
|
|
if (cp == NULL) {
|
|
yyerror("invalid frequency: %s", $1);
|
|
free($1);
|
|
YYERROR;
|
|
}
|
|
free($1);
|
|
}
|
|
;
|
|
|
|
timeout : NUMBER
|
|
{
|
|
if ($1 < 1 || $1 > LONG_MAX) {
|
|
yyerror("timeout out of range: %lld", $1);
|
|
YYERROR;
|
|
}
|
|
$$.tv_sec = $1 / 1000;
|
|
$$.tv_usec = ($1 % 1000) * 1000;
|
|
}
|
|
;
|
|
%%
|
|
|
|
/*
|
|
* Parser and lexer
|
|
*/
|
|
|
|
struct keywords {
|
|
char *k_name;
|
|
int k_val;
|
|
};
|
|
|
|
int
|
|
kw_cmp(const void *a, const void *b)
|
|
{
|
|
return strcmp(a, ((const struct keywords *)b)->k_name);
|
|
}
|
|
|
|
int
|
|
lookup(char *token)
|
|
{
|
|
/* Keep this list sorted */
|
|
static const struct keywords keywords[] = {
|
|
{ "add", ADD },
|
|
{ "address", ADDRESS },
|
|
{ "any", ANY },
|
|
{ "assoc", ASSOC },
|
|
{ "assoced", ASSOCED },
|
|
{ "atim", ATIM },
|
|
{ "auth", AUTH },
|
|
{ "authed", AUTHED },
|
|
{ "beacon", BEACON },
|
|
{ "broadcast", BROADCAST },
|
|
{ "bssid", BSSID },
|
|
{ "const", CONST },
|
|
{ "data", DATA },
|
|
{ "deauth", DEAUTH },
|
|
{ "delay", DELAY },
|
|
{ "delete", DELETE },
|
|
{ "dir", DIR },
|
|
{ "disassoc", DISASSOC },
|
|
{ "ds", DS },
|
|
{ "expire", EXPIRE },
|
|
{ "failure", FAILURE },
|
|
{ "frame", FRAME },
|
|
{ "freq", FREQ },
|
|
{ "from", FROM },
|
|
{ "handle", HANDLE },
|
|
{ "hopper", HOPPER },
|
|
{ "hostap", HOSTAP },
|
|
{ "iapp", IAPP },
|
|
{ "ie", IE },
|
|
{ "include", INCLUDE },
|
|
{ "inconsistent", INCONSISTENT },
|
|
{ "interface", INTERFACE },
|
|
{ "invalid", INVALID },
|
|
{ "leave", LEAVE },
|
|
{ "limit", LIMIT },
|
|
{ "log", LOG },
|
|
{ "management", MANAGEMENT },
|
|
{ "mic", MIC },
|
|
{ "mode", MODE },
|
|
{ "multicast", MULTICAST },
|
|
{ "no", NO },
|
|
{ "node", NODE },
|
|
{ "not", NOT },
|
|
{ "notify", NOTIFY },
|
|
{ "nwid", NWID },
|
|
{ "on", ON },
|
|
{ "open", OPEN },
|
|
{ "passive", PASSIVE },
|
|
{ "pcap", PCAP },
|
|
{ "port", PORT },
|
|
{ "probe", PROBE },
|
|
{ "quick", QUICK },
|
|
{ "radiotap", RADIOTAP },
|
|
{ "random", RANDOM },
|
|
{ "rate", RATE },
|
|
{ "reason", REASON },
|
|
{ "reassoc", REASSOC },
|
|
{ "request", REQUEST },
|
|
{ "required", REQUIRED },
|
|
{ "resend", RESEND },
|
|
{ "reserved", RESERVED },
|
|
{ "response", RESPONSE },
|
|
{ "roaming", ROAMING },
|
|
{ "route", ROUTE },
|
|
{ "rsn", RSN },
|
|
{ "sec", SEC },
|
|
{ "set", SET },
|
|
{ "signal", RSSI },
|
|
{ "skip", SKIP },
|
|
{ "subtype", SUBTYPE },
|
|
{ "table", TABLE },
|
|
{ "to", TO },
|
|
{ "toomany", TOOMANY },
|
|
{ "ttl", TTL },
|
|
{ "txrate", TXRATE },
|
|
{ "type", TYPE },
|
|
{ "unspecified", UNSPECIFIED },
|
|
{ "usec", USEC },
|
|
{ "verbose", VERBOSE },
|
|
{ "with", WITH }
|
|
};
|
|
const struct keywords *p;
|
|
|
|
p = bsearch(token, keywords, sizeof(keywords) / sizeof(keywords[0]),
|
|
sizeof(keywords[0]), kw_cmp);
|
|
|
|
return (p == NULL ? STRING : p->k_val);
|
|
}
|
|
|
|
#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, "%s", __func__);
|
|
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)
|
|
hostapd_fatal("yylex: strdup");
|
|
return (STRING);
|
|
case '-':
|
|
next = lgetc(0);
|
|
if (next == '>')
|
|
return (ARROW);
|
|
lungetc(next);
|
|
break;
|
|
case '!':
|
|
next = lgetc(0);
|
|
if (next == '=')
|
|
return (NE);
|
|
lungetc(next);
|
|
break;
|
|
case '<':
|
|
next = lgetc(0);
|
|
if (next == '=')
|
|
return (LE);
|
|
lungetc(next);
|
|
break;
|
|
case '>':
|
|
next = lgetc(0);
|
|
if (next == '=')
|
|
return (GE);
|
|
lungetc(next);
|
|
break;
|
|
}
|
|
|
|
#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 != '=' && x != '/' && x != '#' && \
|
|
x != ','))
|
|
|
|
if (isalnum(c) || 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)
|
|
hostapd_fatal("yylex: strdup");
|
|
return (token);
|
|
}
|
|
if (c == '\n') {
|
|
yylval.lineno = file->lineno;
|
|
file->lineno++;
|
|
}
|
|
if (c == EOF)
|
|
return (0);
|
|
return (c);
|
|
}
|
|
|
|
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);
|
|
|
|
hostapd_log(HOSTAPD_LOG_DEBUG, "%s = \"%s\"", sym->nam, sym->val);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
hostapd_parse_symset(char *s)
|
|
{
|
|
char *sym, *val;
|
|
int ret;
|
|
size_t len;
|
|
|
|
if ((val = strrchr(s, '=')) == NULL)
|
|
return (-1);
|
|
|
|
len = strlen(s) - strlen(val) + 1;
|
|
if ((sym = malloc(len)) == NULL)
|
|
hostapd_fatal("cmdline_symset: malloc");
|
|
|
|
(void)strlcpy(sym, s, len);
|
|
|
|
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);
|
|
}
|
|
|
|
int
|
|
check_file_secrecy(int fd, const char *fname)
|
|
{
|
|
struct stat st;
|
|
|
|
if (fstat(fd, &st)) {
|
|
warn("cannot stat %s", fname);
|
|
return (-1);
|
|
}
|
|
if (st.st_uid != 0 && st.st_uid != getuid()) {
|
|
warnx("%s: owner not root or current user", fname);
|
|
return (-1);
|
|
}
|
|
if (st.st_mode & (S_IWGRP | S_IXGRP | S_IRWXO)) {
|
|
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) {
|
|
warn("%s", __func__);
|
|
return (NULL);
|
|
}
|
|
if ((nfile->name = strdup(name)) == NULL) {
|
|
warn("%s", __func__);
|
|
free(nfile);
|
|
return (NULL);
|
|
}
|
|
if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
|
|
warn("%s: %s", __func__, 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) {
|
|
warn("%s", __func__);
|
|
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);
|
|
}
|
|
|
|
int
|
|
hostapd_parse_file(struct hostapd_config *cfg)
|
|
{
|
|
struct sym *sym, *next;
|
|
int errors = 0;
|
|
int ret;
|
|
|
|
if ((file = pushfile(cfg->c_config, 1)) == NULL)
|
|
hostapd_fatal("failed to open the main config file: %s\n",
|
|
cfg->c_config);
|
|
topfile = file;
|
|
|
|
/* Init tables and data structures */
|
|
TAILQ_INIT(&cfg->c_apmes);
|
|
TAILQ_INIT(&cfg->c_tables);
|
|
TAILQ_INIT(&cfg->c_frames);
|
|
cfg->c_iapp.i_multicast.sin_addr.s_addr = INADDR_ANY;
|
|
cfg->c_iapp.i_flags = HOSTAPD_IAPP_F_DEFAULT;
|
|
cfg->c_iapp.i_ttl = IP_DEFAULT_MULTICAST_TTL;
|
|
cfg->c_apme_hopdelay.tv_sec = HOSTAPD_HOPPER_MDELAY / 1000;
|
|
cfg->c_apme_hopdelay.tv_usec = (HOSTAPD_HOPPER_MDELAY % 1000) * 1000;
|
|
|
|
ret = yyparse();
|
|
errors = file->errors;
|
|
popfile();
|
|
|
|
/* Free macros and check which have not been used. */
|
|
TAILQ_FOREACH_SAFE(sym, &symhead, entry, next) {
|
|
if (!sym->used)
|
|
hostapd_log(HOSTAPD_LOG_VERBOSE,
|
|
"warning: macro '%s' not used", sym->nam);
|
|
if (!sym->persist) {
|
|
free(sym->nam);
|
|
free(sym->val);
|
|
TAILQ_REMOVE(&symhead, sym, entry);
|
|
free(sym);
|
|
}
|
|
}
|
|
|
|
return (errors ? EINVAL : ret);
|
|
}
|
|
|
|
int
|
|
yyerror(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
char *msg;
|
|
|
|
file->errors++;
|
|
|
|
va_start(ap, fmt);
|
|
if (vasprintf(&msg, fmt, ap) == -1)
|
|
hostapd_fatal("yyerror vasprintf");
|
|
va_end(ap);
|
|
fprintf(stderr, "%s:%d: %s\n", file->name, yylval.lineno, msg);
|
|
fflush(stderr);
|
|
free(msg);
|
|
|
|
return (0);
|
|
}
|