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d0212210279e3fb529aff1a4209af13a0390e8f7
heimdal/lib/asn1/gen.c
Johan Danielsson 1517173dcb add convenience macro that allocates a buffer and encoded into that 
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@11369 ec53bebd-3082-4978-b11e-865c3cabbd6b
2002-09-04 15:06:18 +00:00

461 lines
12 KiB
C
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/*
* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "gen_locl.h"
RCSID("$Id$");
FILE *headerfile, *codefile, *logfile;
#define STEM "asn1"
static const char *orig_filename;
static char header[1024];
static char headerbase[1024] = STEM;
/*
* list of all IMPORTs
*/
struct import {
const char *module;
struct import *next;
};
static struct import *imports = NULL;
void
add_import (const char *module)
{
struct import *tmp = emalloc (sizeof(*tmp));
tmp->module = module;
tmp->next = imports;
imports = tmp;
}
const char *
filename (void)
{
return orig_filename;
}
void
init_generate (const char *filename, const char *base)
{
orig_filename = filename;
if(base)
strcpy(headerbase, base);
sprintf(header, "%s.h", headerbase);
headerfile = fopen (header, "w");
if (headerfile == NULL)
err (1, "open %s", header);
fprintf (headerfile,
"/* Generated from %s */\n"
"/* Do not edit */\n\n",
filename);
fprintf (headerfile,
"#ifndef __%s_h__\n"
"#define __%s_h__\n\n", headerbase, headerbase);
fprintf (headerfile,
"#include <stddef.h>\n"
"#include <time.h>\n\n");
#ifndef HAVE_TIMEGM
fprintf (headerfile, "time_t timegm (struct tm*);\n\n");
#endif
fprintf (headerfile,
"#ifndef __asn1_common_definitions__\n"
"#define __asn1_common_definitions__\n\n");
fprintf (headerfile,
"typedef struct octet_string {\n"
" size_t length;\n"
" void *data;\n"
"} octet_string;\n\n");
fprintf (headerfile,
"typedef char *general_string;\n\n"
);
fprintf (headerfile,
"typedef struct oid {\n"
" size_t length;\n"
" unsigned *components;\n"
"} oid;\n\n");
fputs("#define ASN1_MALLOC_ENCODE(T, B, BL, S, L, R) \\\n"
" do { \\\n"
" (BL) = length_##T((S)); \\\n"
" (B) = malloc((BL)); \\\n"
" if((B) == NULL) { \\\n"
" (R) = ENOMEM; \\\n"
" } else { \\\n"
" (R) = encode_##T(((unsigned char*)(B)) + (BL) - 1, (BL), \\\n"
" (S), (L)); \\\n"
" if((R) != 0) { \\\n"
" free((B)); \\\n"
" (B) = NULL; \\\n"
" } \\\n"
" } \\\n"
" } while (0)\n\n",
headerfile);
fprintf (headerfile, "#endif\n\n");
logfile = fopen(STEM "_files", "w");
if (logfile == NULL)
err (1, "open " STEM "_files");
}
void
close_generate (void)
{
fprintf (headerfile, "#endif /* __%s_h__ */\n", headerbase);
fclose (headerfile);
fprintf (logfile, "\n");
fclose (logfile);
}
void
generate_constant (const Symbol *s)
{
fprintf (headerfile, "enum { %s = %d };\n\n",
s->gen_name, s->constant);
}
static void
space(int level)
{
while(level-- > 0)
fprintf(headerfile, " ");
}
static void
define_asn1 (int level, Type *t)
{
switch (t->type) {
case TType:
space(level);
fprintf (headerfile, "%s", t->symbol->name);
break;
case TInteger:
space(level);
fprintf (headerfile, "INTEGER");
break;
case TUInteger:
space(level);
fprintf (headerfile, "UNSIGNED INTEGER");
break;
case TOctetString:
space(level);
fprintf (headerfile, "OCTET STRING");
break;
case TOID :
space(level);
fprintf(headerfile, "OBJECT IDENTIFIER");
break;
case TBitString: {
Member *m;
int tag = -1;
space(level);
fprintf (headerfile, "BIT STRING {\n");
for (m = t->members; m && m->val != tag; m = m->next) {
if (tag == -1)
tag = m->val;
space(level + 1);
fprintf (headerfile, "%s(%d)%s\n", m->name, m->val,
m->next->val == tag?"":",");
}
space(level);
fprintf (headerfile, "}");
break;
}
case TEnumerated : {
Member *m;
int tag = -1;
space(level);
fprintf (headerfile, "ENUMERATED {\n");
for (m = t->members; m && m->val != tag; m = m->next) {
if (tag == -1)
tag = m->val;
space(level + 1);
fprintf (headerfile, "%s(%d)%s\n", m->name, m->val,
m->next->val == tag?"":",");
}
space(level);
fprintf (headerfile, "}");
break;
}
case TSequence: {
Member *m;
int tag;
int max_width = 0;
space(level);
fprintf (headerfile, "SEQUENCE {\n");
for (m = t->members, tag = -1; m && m->val != tag; m = m->next) {
if (tag == -1)
tag = m->val;
if(strlen(m->name) + (m->val > 9) > max_width)
max_width = strlen(m->name) + (m->val > 9);
}
max_width += 3 + 2;
if(max_width < 16) max_width = 16;
for (m = t->members, tag = -1 ; m && m->val != tag; m = m->next) {
int width;
if (tag == -1)
tag = m->val;
space(level + 1);
fprintf(headerfile, "%s[%d]", m->name, m->val);
width = max_width - strlen(m->name) - 3 - (m->val > 9) - 2;
fprintf(headerfile, "%*s", width, "");
define_asn1(level + 1, m->type);
if(m->optional)
fprintf(headerfile, " OPTIONAL");
if(m->next->val != tag)
fprintf (headerfile, ",");
fprintf (headerfile, "\n");
}
space(level);
fprintf (headerfile, "}");
break;
}
case TSequenceOf: {
space(level);
fprintf (headerfile, "SEQUENCE OF ");
define_asn1 (0, t->subtype);
break;
}
case TGeneralizedTime:
space(level);
fprintf (headerfile, "GeneralizedTime");
break;
case TGeneralString:
space(level);
fprintf (headerfile, "GeneralString");
break;
case TApplication:
fprintf (headerfile, "[APPLICATION %d] ", t->application);
define_asn1 (level, t->subtype);
break;
default:
abort ();
}
}
static void
define_type (int level, char *name, Type *t, int typedefp)
{
switch (t->type) {
case TType:
space(level);
fprintf (headerfile, "%s %s;\n", t->symbol->gen_name, name);
break;
case TInteger:
space(level);
if(t->members == NULL) {
fprintf (headerfile, "int %s;\n", name);
} else {
Member *m;
int tag = -1;
fprintf (headerfile, "enum %s {\n", typedefp ? name : "");
for (m = t->members; m && m->val != tag; m = m->next) {
if(tag == -1)
tag = m->val;
space (level + 1);
fprintf(headerfile, "%s = %d%s\n", m->gen_name, m->val,
m->next->val == tag ? "" : ",");
}
fprintf (headerfile, "} %s;\n", name);
}
break;
case TUInteger:
space(level);
fprintf (headerfile, "unsigned int %s;\n", name);
break;
case TOctetString:
space(level);
fprintf (headerfile, "octet_string %s;\n", name);
break;
case TOID :
space(level);
fprintf (headerfile, "oid %s;\n", name);
break;
case TBitString: {
Member *m;
Type i;
int tag = -1;
i.type = TUInteger;
space(level);
fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
for (m = t->members; m && m->val != tag; m = m->next) {
char *n;
asprintf (&n, "%s:1", m->gen_name);
define_type (level + 1, n, &i, FALSE);
free (n);
if (tag == -1)
tag = m->val;
}
space(level);
fprintf (headerfile, "} %s;\n\n", name);
break;
}
case TEnumerated: {
Member *m;
int tag = -1;
space(level);
fprintf (headerfile, "enum %s {\n", typedefp ? name : "");
for (m = t->members; m && m->val != tag; m = m->next) {
if (tag == -1)
tag = m->val;
space(level + 1);
fprintf (headerfile, "%s = %d%s\n", m->gen_name, m->val,
m->next->val == tag ? "" : ",");
}
space(level);
fprintf (headerfile, "} %s;\n\n", name);
break;
}
case TSequence: {
Member *m;
int tag = -1;
space(level);
fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
for (m = t->members; m && m->val != tag; m = m->next) {
if (m->optional) {
char *n;
asprintf (&n, "*%s", m->gen_name);
define_type (level + 1, n, m->type, FALSE);
free (n);
} else
define_type (level + 1, m->gen_name, m->type, FALSE);
if (tag == -1)
tag = m->val;
}
space(level);
fprintf (headerfile, "} %s;\n", name);
break;
}
case TSequenceOf: {
Type i;
i.type = TUInteger;
i.application = 0;
space(level);
fprintf (headerfile, "struct %s {\n", typedefp ? name : "");
define_type (level + 1, "len", &i, FALSE);
define_type (level + 1, "*val", t->subtype, FALSE);
space(level);
fprintf (headerfile, "} %s;\n", name);
break;
}
case TGeneralizedTime:
space(level);
fprintf (headerfile, "time_t %s;\n", name);
break;
case TGeneralString:
space(level);
fprintf (headerfile, "general_string %s;\n", name);
break;
case TApplication:
define_type (level, name, t->subtype, FALSE);
break;
default:
abort ();
}
}
static void
generate_type_header (const Symbol *s)
{
fprintf (headerfile, "/*\n");
fprintf (headerfile, "%s ::= ", s->name);
define_asn1 (0, s->type);
fprintf (headerfile, "\n*/\n\n");
fprintf (headerfile, "typedef ");
define_type (0, s->gen_name, s->type, TRUE);
fprintf (headerfile, "\n");
}
void
generate_type (const Symbol *s)
{
struct import *i;
char *filename;
asprintf (&filename, "%s_%s.x", STEM, s->gen_name);
codefile = fopen (filename, "w");
if (codefile == NULL)
err (1, "fopen %s", filename);
fprintf(logfile, "%s ", filename);
free(filename);
fprintf (codefile,
"/* Generated from %s */\n"
"/* Do not edit */\n\n"
"#include <stdio.h>\n"
"#include <stdlib.h>\n"
"#include <time.h>\n"
"#include <string.h>\n"
"#include <errno.h>\n",
orig_filename);
for (i = imports; i != NULL; i = i->next)
fprintf (codefile,
"#include <%s_asn1.h>\n",
i->module);
fprintf (codefile,
"#include <%s.h>\n",
headerbase);
fprintf (codefile,
"#include <asn1_err.h>\n"
"#include <der.h>\n"
"#include <parse_units.h>\n\n");
generate_type_header (s);
generate_type_encode (s);
generate_type_decode (s);
generate_type_free (s);
generate_type_length (s);
generate_type_copy (s);
generate_glue (s);
fprintf(headerfile, "\n\n");
fclose(codefile);
}
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