cc47c8fa7b
We turn on a few extra warnings and fix the fallout that occurs when building with --enable-developer. Note that we get different warnings on different machines and so this will be a work in progress. So far, we have built on NetBSD/amd64 5.99.64 (which uses gcc 4.5.3) and Ubuntu 10.04.3 LTS (which uses gcc 4.4.3). Notably, we fixed 1. a lot of missing structure initialisers, 2. unchecked return values for functions that glibc marks as __attribute__((warn-unused-result)), 3. made minor modifications to slc and asn1_compile which can generate code which generates warnings, and 4. a few stragglers here and there. We turned off the extended warnings for many programs in appl/ as they are nearing the end of their useful lifetime, e.g. rsh, rcp, popper, ftp and telnet. Interestingly, glibc's strncmp() macro needed to be worked around whereas the function calls did not. We have not yet tried this on 32 bit platforms, so there will be a few more warnings when we do.
789 lines
18 KiB
Plaintext
789 lines
18 KiB
Plaintext
%{
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/*
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* Copyright (c) 2004-2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <err.h>
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#include <ctype.h>
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#include <limits.h>
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#include <getarg.h>
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#include <vers.h>
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#include <roken.h>
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#include "slc.h"
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extern FILE *yyin;
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extern struct assignment *assignment;
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/* Declarations for Bison:
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*/
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#define YYMALLOC malloc
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#define YYFREE free
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%}
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%union {
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char *string;
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struct assignment *assignment;
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}
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%token <string> LITERAL
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%token <string> STRING
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%type <assignment> assignment assignments
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%start start
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%%
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start : assignments
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{
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assignment = $1;
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}
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;
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assignments : assignment assignments
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{
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$1->next = $2;
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$$ = $1;
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}
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| assignment
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;
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assignment : LITERAL '=' STRING
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{
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$$ = malloc(sizeof(*$$));
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$$->name = $1;
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$$->type = a_value;
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$$->lineno = lineno;
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$$->u.value = $3;
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$$->next = NULL;
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}
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| LITERAL '=' '{' assignments '}'
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{
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$$ = malloc(sizeof(*$$));
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$$->name = $1;
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$$->type = a_assignment;
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$$->lineno = lineno;
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$$->u.assignment = $4;
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$$->next = NULL;
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}
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;
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%%
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char *filename;
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FILE *cfile, *hfile;
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int error_flag;
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struct assignment *assignment;
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static void
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ex(struct assignment *a, const char *fmt, ...)
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{
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va_list ap;
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fprintf(stderr, "%s:%d: ", a->name, a->lineno);
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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}
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static int
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check_option(struct assignment *as)
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{
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struct assignment *a;
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int seen_long = 0;
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int seen_name = 0;
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int seen_short = 0;
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int seen_type = 0;
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int seen_argument = 0;
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int seen_help = 0;
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int seen_default = 0;
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int ret = 0;
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for(a = as; a != NULL; a = a->next) {
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if(strcmp(a->name, "long") == 0)
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seen_long++;
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else if(strcmp(a->name, "short") == 0)
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seen_short++;
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else if(strcmp(a->name, "name") == 0)
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seen_name++;
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else if(strcmp(a->name, "type") == 0)
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seen_type++;
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else if(strcmp(a->name, "argument") == 0)
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seen_argument++;
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else if(strcmp(a->name, "help") == 0)
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seen_help++;
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else if(strcmp(a->name, "default") == 0)
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seen_default++;
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else {
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ex(a, "unknown name %s", a->name);
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ret++;
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}
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}
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if(seen_long == 0 && seen_short == 0) {
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ex(as, "neither long nor short option");
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ret++;
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}
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if (seen_long == 0 && seen_name == 0) {
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ex(as, "either of long or name option must be used");
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ret++;
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}
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if(seen_long > 1) {
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ex(as, "multiple long options");
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ret++;
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}
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if(seen_short > 1) {
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ex(as, "multiple short options");
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ret++;
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}
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if(seen_type > 1) {
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ex(as, "multiple types");
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ret++;
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}
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if(seen_argument > 1) {
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ex(as, "multiple arguments");
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ret++;
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}
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if(seen_help > 1) {
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ex(as, "multiple help strings");
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ret++;
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}
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if(seen_default > 1) {
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ex(as, "multiple default values");
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ret++;
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}
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return ret;
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}
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static int
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check_command(struct assignment *as)
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{
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struct assignment *a;
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int seen_name = 0;
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int seen_function = 0;
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int seen_help = 0;
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int seen_argument = 0;
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int seen_minargs = 0;
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int seen_maxargs = 0;
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int ret = 0;
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for(a = as; a != NULL; a = a->next) {
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if(strcmp(a->name, "name") == 0)
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seen_name++;
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else if(strcmp(a->name, "function") == 0) {
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seen_function++;
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} else if(strcmp(a->name, "option") == 0)
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ret += check_option(a->u.assignment);
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else if(strcmp(a->name, "help") == 0) {
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seen_help++;
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} else if(strcmp(a->name, "argument") == 0) {
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seen_argument++;
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} else if(strcmp(a->name, "min_args") == 0) {
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seen_minargs++;
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} else if(strcmp(a->name, "max_args") == 0) {
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seen_maxargs++;
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} else {
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ex(a, "unknown name: %s", a->name);
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ret++;
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}
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}
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if(seen_name == 0) {
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ex(as, "no command name");
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ret++;
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}
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if(seen_function > 1) {
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ex(as, "multiple function names");
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ret++;
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}
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if(seen_help > 1) {
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ex(as, "multiple help strings");
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ret++;
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}
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if(seen_argument > 1) {
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ex(as, "multiple argument strings");
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ret++;
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}
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if(seen_minargs > 1) {
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ex(as, "multiple min_args strings");
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ret++;
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}
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if(seen_maxargs > 1) {
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ex(as, "multiple max_args strings");
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ret++;
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}
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return ret;
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}
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static int
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check(struct assignment *as)
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{
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struct assignment *a;
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int ret = 0;
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for(a = as; a != NULL; a = a->next) {
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if(strcmp(a->name, "command")) {
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fprintf(stderr, "unknown type %s line %d\n", a->name, a->lineno);
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ret++;
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continue;
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}
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if(a->type != a_assignment) {
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fprintf(stderr, "bad command definition %s line %d\n", a->name, a->lineno);
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ret++;
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continue;
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}
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ret += check_command(a->u.assignment);
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}
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return ret;
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}
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static struct assignment *
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find_next(struct assignment *as, const char *name)
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{
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for(as = as->next; as != NULL; as = as->next) {
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if(strcmp(as->name, name) == 0)
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return as;
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}
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return NULL;
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}
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static struct assignment *
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find(struct assignment *as, const char *name)
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{
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for(; as != NULL; as = as->next) {
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if(strcmp(as->name, name) == 0)
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return as;
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}
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return NULL;
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}
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static void
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space(FILE *f, int level)
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{
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fprintf(f, "%*.*s", level * 4, level * 4, " ");
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}
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static void
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cprint(int level, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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space(cfile, level);
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vfprintf(cfile, fmt, ap);
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va_end(ap);
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}
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static void
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hprint(int level, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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space(hfile, level);
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vfprintf(hfile, fmt, ap);
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va_end(ap);
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}
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static void gen_name(char *str);
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static void
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gen_command(struct assignment *as)
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{
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struct assignment *a, *b;
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char *f;
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a = find(as, "name");
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f = strdup(a->u.value);
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gen_name(f);
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cprint(1, " { ");
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fprintf(cfile, "\"%s\", ", a->u.value);
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fprintf(cfile, "%s_wrap, ", f);
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b = find(as, "argument");
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if(b)
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fprintf(cfile, "\"%s %s\", ", a->u.value, b->u.value);
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else
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fprintf(cfile, "\"%s\", ", a->u.value);
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b = find(as, "help");
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if(b)
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fprintf(cfile, "\"%s\"", b->u.value);
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else
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fprintf(cfile, "NULL");
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fprintf(cfile, " },\n");
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for(a = a->next; a != NULL; a = a->next)
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if(strcmp(a->name, "name") == 0)
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cprint(1, " { \"%s\", NULL, NULL, NULL },\n", a->u.value);
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cprint(0, "\n");
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}
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static void
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gen_name(char *str)
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{
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char *p;
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for(p = str; *p != '\0'; p++)
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if(!isalnum((unsigned char)*p))
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*p = '_';
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}
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static char *
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make_name(struct assignment *as)
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{
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struct assignment *lopt;
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struct assignment *type;
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char *s;
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int ret;
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lopt = find(as, "long");
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if(lopt == NULL)
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lopt = find(as, "name");
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if(lopt == NULL)
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return NULL;
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type = find(as, "type");
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if(strcmp(type->u.value, "-flag") == 0)
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ret = asprintf(&s, "%s_flag", lopt->u.value);
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else
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ret = asprintf(&s, "%s_%s", lopt->u.value, type->u.value);
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if (ret == -1)
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return NULL;
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gen_name(s);
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return s;
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}
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static void defval_int(const char *name, struct assignment *defval)
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{
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if(defval != NULL)
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cprint(1, "opt.%s = %s;\n", name, defval->u.value);
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else
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cprint(1, "opt.%s = 0;\n", name);
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}
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static void defval_neg_flag(const char *name, struct assignment *defval)
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{
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if(defval != NULL)
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cprint(1, "opt.%s = %s;\n", name, defval->u.value);
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else
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cprint(1, "opt.%s = 1;\n", name);
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}
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static void defval_string(const char *name, struct assignment *defval)
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{
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if(defval != NULL)
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cprint(1, "opt.%s = (char *)(unsigned long)\"%s\";\n", name, defval->u.value);
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else
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cprint(1, "opt.%s = NULL;\n", name);
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}
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static void defval_strings(const char *name, struct assignment *defval)
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{
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cprint(1, "opt.%s.num_strings = 0;\n", name);
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cprint(1, "opt.%s.strings = NULL;\n", name);
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}
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static void free_strings(const char *name)
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{
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cprint(1, "free_getarg_strings (&opt.%s);\n", name);
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}
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struct type_handler {
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const char *typename;
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const char *c_type;
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const char *getarg_type;
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void (*defval)(const char*, struct assignment*);
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void (*free)(const char*);
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} type_handlers[] = {
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{ "integer",
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"int",
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"arg_integer",
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defval_int,
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NULL
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},
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{ "string",
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"char*",
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"arg_string",
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defval_string,
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NULL
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},
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{ "strings",
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"struct getarg_strings",
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"arg_strings",
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defval_strings,
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free_strings
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},
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{ "flag",
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"int",
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"arg_flag",
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defval_int,
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NULL
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},
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{ "-flag",
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"int",
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"arg_negative_flag",
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defval_neg_flag,
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NULL
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},
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{ NULL, NULL, NULL, NULL, NULL }
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};
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static struct type_handler *find_handler(struct assignment *type)
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{
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struct type_handler *th;
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for(th = type_handlers; th->typename != NULL; th++)
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if(strcmp(type->u.value, th->typename) == 0)
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return th;
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ex(type, "unknown type \"%s\"", type->u.value);
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exit(1);
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}
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static void
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gen_options(struct assignment *opt1, const char *name)
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{
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struct assignment *tmp;
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hprint(0, "struct %s_options {\n", name);
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for(tmp = opt1;
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tmp != NULL;
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tmp = find_next(tmp, "option")) {
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struct assignment *type;
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struct type_handler *th;
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char *s;
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s = make_name(tmp->u.assignment);
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type = find(tmp->u.assignment, "type");
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th = find_handler(type);
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hprint(1, "%s %s;\n", th->c_type, s);
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free(s);
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}
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hprint(0, "};\n");
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}
|
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|
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static void
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gen_wrapper(struct assignment *as)
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{
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struct assignment *name;
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struct assignment *arg;
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|
struct assignment *opt1;
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|
struct assignment *function;
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struct assignment *tmp;
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char *n, *f;
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int nargs = 0;
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int narguments = 0;
|
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name = find(as, "name");
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n = strdup(name->u.value);
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gen_name(n);
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arg = find(as, "argument");
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if (arg)
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narguments++;
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opt1 = find(as, "option");
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function = find(as, "function");
|
|
if(function)
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f = function->u.value;
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else
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f = n;
|
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|
|
|
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if(opt1 != NULL) {
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gen_options(opt1, n);
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hprint(0, "int %s(struct %s_options*, int, char **);\n", f, n);
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} else {
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hprint(0, "int %s(void*, int, char **);\n", f);
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}
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|
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|
fprintf(cfile, "static int\n");
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|
fprintf(cfile, "%s_wrap(int argc, char **argv)\n", n);
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|
fprintf(cfile, "{\n");
|
|
if(opt1 != NULL)
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|
cprint(1, "struct %s_options opt;\n", n);
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cprint(1, "int ret;\n");
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|
cprint(1, "int optidx = 0;\n");
|
|
cprint(1, "struct getargs args[] = {\n");
|
|
for(tmp = find(as, "option");
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|
tmp != NULL;
|
|
tmp = find_next(tmp, "option")) {
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|
struct assignment *type = find(tmp->u.assignment, "type");
|
|
struct assignment *lopt = find(tmp->u.assignment, "long");
|
|
struct assignment *sopt = find(tmp->u.assignment, "short");
|
|
struct assignment *aarg = find(tmp->u.assignment, "argument");
|
|
struct assignment *help = find(tmp->u.assignment, "help");
|
|
|
|
struct type_handler *th;
|
|
|
|
cprint(2, "{ ");
|
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if(lopt)
|
|
fprintf(cfile, "\"%s\", ", lopt->u.value);
|
|
else
|
|
fprintf(cfile, "NULL, ");
|
|
if(sopt)
|
|
fprintf(cfile, "'%c', ", *sopt->u.value);
|
|
else
|
|
fprintf(cfile, "0, ");
|
|
th = find_handler(type);
|
|
fprintf(cfile, "%s, ", th->getarg_type);
|
|
fprintf(cfile, "NULL, ");
|
|
if(help)
|
|
fprintf(cfile, "\"%s\", ", help->u.value);
|
|
else
|
|
fprintf(cfile, "NULL, ");
|
|
if(aarg) {
|
|
fprintf(cfile, "\"%s\"", aarg->u.value);
|
|
narguments++;
|
|
} else
|
|
fprintf(cfile, "NULL");
|
|
fprintf(cfile, " },\n");
|
|
}
|
|
cprint(2, "{ \"help\", 'h', arg_flag, NULL, NULL, NULL }\n");
|
|
cprint(1, "};\n");
|
|
cprint(1, "int help_flag = 0;\n");
|
|
|
|
for(tmp = find(as, "option");
|
|
tmp != NULL;
|
|
tmp = find_next(tmp, "option")) {
|
|
char *s;
|
|
struct assignment *type = find(tmp->u.assignment, "type");
|
|
|
|
struct assignment *defval = find(tmp->u.assignment, "default");
|
|
|
|
struct type_handler *th;
|
|
|
|
s = make_name(tmp->u.assignment);
|
|
th = find_handler(type);
|
|
(*th->defval)(s, defval);
|
|
free(s);
|
|
}
|
|
|
|
for(tmp = find(as, "option");
|
|
tmp != NULL;
|
|
tmp = find_next(tmp, "option")) {
|
|
char *s;
|
|
s = make_name(tmp->u.assignment);
|
|
cprint(1, "args[%d].value = &opt.%s;\n", nargs++, s);
|
|
free(s);
|
|
}
|
|
cprint(1, "args[%d].value = &help_flag;\n", nargs++);
|
|
cprint(1, "if(getarg(args, %d, argc, argv, &optidx))\n", nargs);
|
|
cprint(2, "goto usage;\n");
|
|
|
|
{
|
|
int min_args = -1;
|
|
int max_args = -1;
|
|
char *end;
|
|
if(narguments == 0) {
|
|
max_args = 0;
|
|
} else {
|
|
if((tmp = find(as, "min_args")) != NULL) {
|
|
min_args = strtol(tmp->u.value, &end, 0);
|
|
if(*end != '\0') {
|
|
ex(tmp, "min_args is not numeric");
|
|
exit(1);
|
|
}
|
|
if(min_args < 0) {
|
|
ex(tmp, "min_args must be non-negative");
|
|
exit(1);
|
|
}
|
|
}
|
|
if((tmp = find(as, "max_args")) != NULL) {
|
|
max_args = strtol(tmp->u.value, &end, 0);
|
|
if(*end != '\0') {
|
|
ex(tmp, "max_args is not numeric");
|
|
exit(1);
|
|
}
|
|
if(max_args < 0) {
|
|
ex(tmp, "max_args must be non-negative");
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
if(min_args != -1 || max_args != -1) {
|
|
if(min_args == max_args) {
|
|
cprint(1, "if(argc - optidx != %d) {\n",
|
|
min_args);
|
|
cprint(2, "fprintf(stderr, \"Need exactly %u parameters (%%u given).\\n\\n\", argc - optidx);\n", min_args);
|
|
cprint(2, "goto usage;\n");
|
|
cprint(1, "}\n");
|
|
} else {
|
|
if(max_args != -1) {
|
|
cprint(1, "if(argc - optidx > %d) {\n", max_args);
|
|
cprint(2, "fprintf(stderr, \"Arguments given (%%u) are more than expected (%u).\\n\\n\", argc - optidx);\n", max_args);
|
|
cprint(2, "goto usage;\n");
|
|
cprint(1, "}\n");
|
|
}
|
|
if(min_args != -1) {
|
|
cprint(1, "if(argc - optidx < %d) {\n", min_args);
|
|
cprint(2, "fprintf(stderr, \"Arguments given (%%u) are less than expected (%u).\\n\\n\", argc - optidx);\n", min_args);
|
|
cprint(2, "goto usage;\n");
|
|
cprint(1, "}\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
cprint(1, "if(help_flag)\n");
|
|
cprint(2, "goto usage;\n");
|
|
|
|
cprint(1, "ret = %s(%s, argc - optidx, argv + optidx);\n",
|
|
f, opt1 ? "&opt": "NULL");
|
|
|
|
/* free allocated data */
|
|
for(tmp = find(as, "option");
|
|
tmp != NULL;
|
|
tmp = find_next(tmp, "option")) {
|
|
char *s;
|
|
struct assignment *type = find(tmp->u.assignment, "type");
|
|
struct type_handler *th;
|
|
th = find_handler(type);
|
|
if(th->free == NULL)
|
|
continue;
|
|
s = make_name(tmp->u.assignment);
|
|
(*th->free)(s);
|
|
free(s);
|
|
}
|
|
cprint(1, "return ret;\n");
|
|
|
|
cprint(0, "usage:\n");
|
|
cprint(1, "arg_printusage (args, %d, \"%s\", \"%s\");\n", nargs,
|
|
name->u.value, arg ? arg->u.value : "");
|
|
/* free allocated data */
|
|
for(tmp = find(as, "option");
|
|
tmp != NULL;
|
|
tmp = find_next(tmp, "option")) {
|
|
char *s;
|
|
struct assignment *type = find(tmp->u.assignment, "type");
|
|
struct type_handler *th;
|
|
th = find_handler(type);
|
|
if(th->free == NULL)
|
|
continue;
|
|
s = make_name(tmp->u.assignment);
|
|
(*th->free)(s);
|
|
free(s);
|
|
}
|
|
cprint(1, "return 0;\n");
|
|
cprint(0, "}\n");
|
|
cprint(0, "\n");
|
|
}
|
|
|
|
char cname[PATH_MAX];
|
|
char hname[PATH_MAX];
|
|
|
|
static void
|
|
gen(struct assignment *as)
|
|
{
|
|
struct assignment *a;
|
|
cprint(0, "#include <stdio.h>\n");
|
|
cprint(0, "#include <getarg.h>\n");
|
|
cprint(0, "#include <sl.h>\n");
|
|
cprint(0, "#include \"%s\"\n\n", hname);
|
|
|
|
hprint(0, "#include <stdio.h>\n");
|
|
hprint(0, "#include <sl.h>\n");
|
|
hprint(0, "\n");
|
|
|
|
|
|
for(a = as; a != NULL; a = a->next)
|
|
gen_wrapper(a->u.assignment);
|
|
|
|
cprint(0, "SL_cmd commands[] = {\n");
|
|
for(a = as; a != NULL; a = a->next)
|
|
gen_command(a->u.assignment);
|
|
cprint(1, "{ NULL, NULL, NULL, NULL }\n");
|
|
cprint(0, "};\n");
|
|
|
|
hprint(0, "extern SL_cmd commands[];\n");
|
|
}
|
|
|
|
int version_flag;
|
|
int help_flag;
|
|
struct getargs args[] = {
|
|
{ "version", 0, arg_flag, &version_flag, NULL, NULL },
|
|
{ "help", 0, arg_flag, &help_flag, NULL, NULL }
|
|
};
|
|
int num_args = sizeof(args) / sizeof(args[0]);
|
|
|
|
static void
|
|
usage(int code)
|
|
{
|
|
arg_printusage(args, num_args, NULL, "command-table");
|
|
exit(code);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
char *p;
|
|
|
|
int optidx = 0;
|
|
|
|
setprogname(argv[0]);
|
|
if(getarg(args, num_args, argc, argv, &optidx))
|
|
usage(1);
|
|
if(help_flag)
|
|
usage(0);
|
|
if(version_flag) {
|
|
print_version(NULL);
|
|
exit(0);
|
|
}
|
|
|
|
if(argc == optidx)
|
|
usage(1);
|
|
|
|
filename = argv[optidx];
|
|
yyin = fopen(filename, "r");
|
|
if(yyin == NULL)
|
|
err(1, "%s", filename);
|
|
p = strrchr(filename, '/');
|
|
if(p)
|
|
strlcpy(cname, p + 1, sizeof(cname));
|
|
else
|
|
strlcpy(cname, filename, sizeof(cname));
|
|
p = strrchr(cname, '.');
|
|
if(p)
|
|
*p = '\0';
|
|
strlcpy(hname, cname, sizeof(hname));
|
|
strlcat(cname, ".c", sizeof(cname));
|
|
strlcat(hname, ".h", sizeof(hname));
|
|
yyparse();
|
|
if(error_flag)
|
|
exit(1);
|
|
if(check(assignment) == 0) {
|
|
cfile = fopen(cname, "w");
|
|
if(cfile == NULL)
|
|
err(1, "%s", cname);
|
|
hfile = fopen(hname, "w");
|
|
if(hfile == NULL)
|
|
err(1, "%s", hname);
|
|
gen(assignment);
|
|
fclose(cfile);
|
|
fclose(hfile);
|
|
}
|
|
fclose(yyin);
|
|
return 0;
|
|
}
|