352 lines
8.7 KiB
C
352 lines
8.7 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999 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 "gen_locl.h"
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RCSID("$Id: gen.c,v 1.41 1999/12/02 17:05:02 joda Exp $");
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FILE *headerfile, *codefile, *logfile;
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#define STEM "asn1"
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static char *orig_filename;
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static char header[1024];
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static char headerbase[1024] = STEM;
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void
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init_generate (char *filename, char *base)
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{
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orig_filename = filename;
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if(base)
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strcpy(headerbase, base);
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sprintf(header, "%s.h", headerbase);
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headerfile = fopen (header, "w");
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if (headerfile == NULL)
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err (1, "open %s", header);
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fprintf (headerfile,
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"/* Generated from %s */\n"
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"/* Do not edit */\n\n",
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filename);
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fprintf (headerfile,
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"#ifndef __%s_h__\n"
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"#define __%s_h__\n\n", headerbase, headerbase);
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fprintf (headerfile,
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"#include <stddef.h>\n"
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"#include <time.h>\n\n");
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#ifndef HAVE_TIMEGM
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fprintf (headerfile, "time_t timegm (struct tm*);\n\n");
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#endif
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fprintf (headerfile,
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"#ifndef __asn1_common_definitions__\n"
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"#define __asn1_common_definitions__\n\n");
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fprintf (headerfile,
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"typedef struct octet_string {\n"
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" size_t length;\n"
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" void *data;\n"
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"} octet_string;\n\n");
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fprintf (headerfile,
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#if 0
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"typedef struct general_string {\n"
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" size_t length;\n"
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" char *data;\n"
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"} general_string;\n\n"
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#else
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"typedef char *general_string;\n\n"
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#endif
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);
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fprintf (headerfile, "#endif\n\n");
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logfile = fopen(STEM "_files", "w");
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if (logfile == NULL)
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err (1, "open " STEM "_files");
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}
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void
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close_generate ()
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{
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fprintf (headerfile, "#endif /* __%s_h__ */\n", headerbase);
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fclose (headerfile);
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fprintf (logfile, "\n");
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fclose (logfile);
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}
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void
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generate_constant (const Symbol *s)
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{
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fprintf (headerfile, "enum { %s = %d };\n\n",
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s->gen_name, s->constant);
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}
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static void
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space(int level)
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{
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while(level-- > 0)
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fprintf(headerfile, " ");
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}
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static void
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define_asn1 (int level, Type *t)
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{
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switch (t->type) {
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case TType:
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space(level);
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fprintf (headerfile, "%s", t->symbol->name);
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break;
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case TInteger:
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space(level);
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fprintf (headerfile, "INTEGER");
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break;
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case TOctetString:
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space(level);
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fprintf (headerfile, "OCTET STRING");
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break;
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case TBitString: {
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Member *m;
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Type i;
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int tag = -1;
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i.type = TInteger;
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space(level);
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fprintf (headerfile, "BIT STRING {\n");
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for (m = t->members; m && m->val != tag; m = m->next) {
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if (tag == -1)
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tag = m->val;
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space(level + 1);
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fprintf (headerfile, "%s(%d)%s\n", m->name, m->val,
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m->next->val == tag?"":",");
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}
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space(level);
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fprintf (headerfile, "}");
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break;
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}
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case TSequence: {
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Member *m;
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int tag;
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int max_width = 0;
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space(level);
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fprintf (headerfile, "SEQUENCE {\n");
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for (m = t->members, tag = -1; m && m->val != tag; m = m->next) {
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if (tag == -1)
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tag = m->val;
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if(strlen(m->name) + (m->val > 9) > max_width)
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max_width = strlen(m->name) + (m->val > 9);
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}
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max_width += 3 + 2;
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if(max_width < 16) max_width = 16;
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for (m = t->members, tag = -1 ; m && m->val != tag; m = m->next) {
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int width;
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if (tag == -1)
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tag = m->val;
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space(level + 1);
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fprintf(headerfile, "%s[%d]", m->name, m->val);
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width = max_width - strlen(m->name) - 3 - (m->val > 9) - 2;
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fprintf(headerfile, "%*s", width, "");
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define_asn1(level + 1, m->type);
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if(m->optional)
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fprintf(headerfile, " OPTIONAL");
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if(m->next->val != tag)
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fprintf (headerfile, ",");
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fprintf (headerfile, "\n");
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}
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space(level);
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fprintf (headerfile, "}");
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break;
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}
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case TSequenceOf: {
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space(level);
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fprintf (headerfile, "SEQUENCE OF ");
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define_asn1 (0, t->subtype);
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break;
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}
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case TGeneralizedTime:
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space(level);
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fprintf (headerfile, "GeneralizedTime");
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break;
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case TGeneralString:
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space(level);
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fprintf (headerfile, "GeneralString");
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break;
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case TApplication:
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fprintf (headerfile, "[APPLICATION %d] ", t->application);
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define_asn1 (level, t->subtype);
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break;
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default:
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abort ();
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}
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}
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static void
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define_type (int level, char *name, Type *t, int typedefp)
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{
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switch (t->type) {
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case TType:
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space(level);
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fprintf (headerfile, "%s %s;\n", t->symbol->gen_name, name);
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break;
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case TInteger:
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space(level);
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fprintf (headerfile, "int %s;\n", name);
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break;
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case TUInteger:
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space(level);
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fprintf (headerfile, "unsigned int %s;\n", name);
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break;
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case TOctetString:
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space(level);
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fprintf (headerfile, "octet_string %s;\n", name);
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break;
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case TBitString: {
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Member *m;
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Type i;
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int tag = -1;
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i.type = TUInteger;
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space(level);
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fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
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for (m = t->members; m && m->val != tag; m = m->next) {
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char *n;
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asprintf (&n, "%s:1", m->gen_name);
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define_type (level + 1, n, &i, FALSE);
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free (n);
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if (tag == -1)
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tag = m->val;
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}
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space(level);
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fprintf (headerfile, "} %s;\n\n", name);
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break;
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}
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case TSequence: {
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Member *m;
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int tag = -1;
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space(level);
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fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
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for (m = t->members; m && m->val != tag; m = m->next) {
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if (m->optional) {
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char *n;
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asprintf (&n, "*%s", m->gen_name);
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define_type (level + 1, n, m->type, FALSE);
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free (n);
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} else
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define_type (level + 1, m->gen_name, m->type, FALSE);
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if (tag == -1)
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tag = m->val;
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}
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space(level);
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fprintf (headerfile, "} %s;\n", name);
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break;
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}
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case TSequenceOf: {
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Type i;
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i.type = TUInteger;
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i.application = 0;
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space(level);
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fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
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define_type (level + 1, "len", &i, FALSE);
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define_type (level + 1, "*val", t->subtype, FALSE);
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space(level);
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fprintf (headerfile, "} %s;\n", name);
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break;
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}
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case TGeneralizedTime:
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space(level);
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fprintf (headerfile, "time_t %s;\n", name);
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break;
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case TGeneralString:
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space(level);
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fprintf (headerfile, "general_string %s;\n", name);
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break;
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case TApplication:
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define_type (level, name, t->subtype, FALSE);
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break;
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default:
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abort ();
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}
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}
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static void
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generate_type_header (const Symbol *s)
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{
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fprintf (headerfile, "/*\n");
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fprintf (headerfile, "%s ::= ", s->name);
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define_asn1 (0, s->type);
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fprintf (headerfile, "\n*/\n\n");
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fprintf (headerfile, "typedef ");
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define_type (0, s->gen_name, s->type, TRUE);
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fprintf (headerfile, "\n");
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}
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void
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generate_type (const Symbol *s)
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{
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char *filename;
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asprintf (&filename, "%s_%s.x", STEM, s->gen_name);
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codefile = fopen (filename, "w");
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if (codefile == NULL)
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err (1, "fopen %s", filename);
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fprintf(logfile, "%s ", filename);
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free(filename);
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fprintf (codefile,
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"/* Generated from %s */\n"
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"/* Do not edit */\n\n"
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"#include \"libasn1.h\"\n\n"
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#if 0
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"#include <stdio.h>\n"
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"#include <stdlib.h>\n"
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"#include <time.h>\n"
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"#include <" STEM ".h>\n\n"
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"#include <asn1_err.h>\n"
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"#include <der.h>\n"
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#endif
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,orig_filename);
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generate_type_header (s);
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generate_type_encode (s);
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generate_type_decode (s);
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generate_type_free (s);
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generate_type_length (s);
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generate_type_copy (s);
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generate_glue (s);
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fprintf(headerfile, "\n\n");
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fclose(codefile);
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}
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