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/*
* Copyright (c) 1997 - 2005 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("$Id$");
static int used_fail;
static void
copy_primitive (const char *typename, const char *from, const char *to)
{
fprintf (codefile, "if(der_copy_%s(%s, %s)) goto fail;\n",
typename, from, to);
used_fail++;
}
static void
copy_type (const char *from, const char *to, const Type *t, int preserve)
{
switch (t->type) {
case TType:
#if 0
copy_type (from, to, t->symbol->type, preserve);
#endif
fprintf (codefile, "if(copy_%s(%s, %s)) goto fail;\n",
t->symbol->gen_name, from, to);
used_fail++;
break;
case TInteger:
if (t->range == NULL && t->members == NULL) {
copy_primitive ("heim_integer", from, to);
break;
}
fallthrough;
case TBoolean:
case TEnumerated :
fprintf(codefile, "*(%s) = *(%s);\n", to, from);
break;
case TOctetString:
copy_primitive ("octet_string", from, to);
break;
case TBitString:
if (HEIM_TAILQ_EMPTY(t->members))
copy_primitive ("bit_string", from, to);
else
fprintf(codefile, "*(%s) = *(%s);\n", to, from);
break;
case TSet:
case TSequence:
case TChoice: {
Member *m, *have_ellipsis = NULL;
if(t->members == NULL)
break;
if ((t->type == TSequence || t->type == TChoice) && preserve) {
fprintf(codefile,
"{ int ret;\n"
"ret = der_copy_octet_string(&(%s)->_save, &(%s)->_save);\n"
"if (ret) goto fail;\n"
"}\n",
from, to);
used_fail++;
}
if(t->type == TChoice) {
fprintf(codefile, "(%s)->element = (%s)->element;\n", to, from);
fprintf(codefile, "switch((%s)->element) {\n", from);
}
HEIM_TAILQ_FOREACH(m, t->members, members) {
char *fs;
char *ts;
if (m->ellipsis) {
have_ellipsis = m;
continue;
}
if(t->type == TChoice)
fprintf(codefile, "case %s:\n", m->label);
if (asprintf (&fs, "%s(%s)->%s%s",
m->optional ? "" : "&", from,
t->type == TChoice ? "u." : "", m->gen_name) < 0)
errx(1, "malloc");
if (fs == NULL)
errx(1, "malloc");
if (asprintf (&ts, "%s(%s)->%s%s",
m->optional ? "" : "&", to,
t->type == TChoice ? "u." : "", m->gen_name) < 0)
errx(1, "malloc");
if (ts == NULL)
errx(1, "malloc");
if(m->optional){
fprintf(codefile, "if(%s) {\n", fs);
fprintf(codefile, "%s = calloc(1, sizeof(*%s));\n", ts, ts);
fprintf(codefile, "if(%s == NULL) goto fail;\n", ts);
used_fail++;
}
copy_type (fs, ts, m->type, FALSE);
if(m->optional){
fprintf(codefile, "}else\n");
fprintf(codefile, "%s = NULL;\n", ts);
}
free (fs);
free (ts);
if(t->type == TChoice)
fprintf(codefile, "break;\n");
}
if(t->type == TChoice) {
if (have_ellipsis) {
fprintf(codefile, "case %s: {\n"
"int ret;\n"
"ret=der_copy_octet_string(&(%s)->u.%s, &(%s)->u.%s);\n"
"if (ret) goto fail;\n"
"break;\n"
"}\n",
have_ellipsis->label,
from, have_ellipsis->gen_name,
to, have_ellipsis->gen_name);
used_fail++;
}
fprintf(codefile, "}\n");
}
break;
}
case TSetOf:
case TSequenceOf: {
char *f = NULL, *T = NULL;
fprintf (codefile, "if(((%s)->val = "
"calloc(1, (%s)->len * sizeof(*(%s)->val))) == NULL && (%s)->len != 0)\n",
to, from, to, from);
fprintf (codefile, "goto fail;\n");
used_fail++;
fprintf(codefile,
"for((%s)->len = 0; (%s)->len < (%s)->len; (%s)->len++){\n",
to, to, from, to);
if (asprintf(&f, "&(%s)->val[(%s)->len]", from, to) < 0)
errx(1, "malloc");
if (f == NULL)
errx(1, "malloc");
if (asprintf(&T, "&(%s)->val[(%s)->len]", to, to) < 0)
errx(1, "malloc");
if (T == NULL)
errx(1, "malloc");
copy_type(f, T, t->subtype, FALSE);
fprintf(codefile, "}\n");
free(f);
free(T);
break;
}
case TGeneralizedTime:
fprintf(codefile, "*(%s) = *(%s);\n", to, from);
break;
case TGeneralString:
copy_primitive ("general_string", from, to);
break;
case TTeletexString:
copy_primitive ("general_string", from, to);
break;
case TUTCTime:
fprintf(codefile, "*(%s) = *(%s);\n", to, from);
break;
case TUTF8String:
copy_primitive ("utf8string", from, to);
break;
case TPrintableString:
copy_primitive ("printable_string", from, to);
break;
case TIA5String:
copy_primitive ("ia5_string", from, to);
break;
case TBMPString:
copy_primitive ("bmp_string", from, to);
break;
case TUniversalString:
copy_primitive ("universal_string", from, to);
break;
case TVisibleString:
copy_primitive ("visible_string", from, to);
break;
case TTag:
copy_type (from, to, t->subtype, preserve);
break;
case TOID:
copy_primitive ("oid", from, to);
break;
case TNull:
break;
default :
abort ();
}
}
void
generate_type_copy (const Symbol *s)
{
struct decoration deco;
ssize_t more_deco = -1;
int preserve = preserve_type(s->name) ? TRUE : FALSE;
int save_used_fail = used_fail;
used_fail = 0;
fprintf (codefile, "int ASN1CALL\n"
"copy_%s(const %s *from, %s *to)\n"
"{\n"
"memset(to, 0, sizeof(*to));\n",
s->gen_name, s->gen_name, s->gen_name);
copy_type ("from", "to", s->type, preserve);
while (decorate_type(s->gen_name, &deco, &more_deco)) {
if (deco.ext && deco.copy_function_name == NULL) {
/* Decorated with field of external type but no copy function */
if (deco.ptr)
fprintf(codefile, "(to)->%s = 0;\n", deco.field_name);
else
fprintf(codefile, "memset(&(to)->%s, 0, sizeof((to)->%s));\n",
deco.field_name, deco.field_name);
} else if (deco.ext) {
/* Decorated with field of external type w/ copy function */
if (deco.ptr) {
fprintf(codefile, "if (from->%s) {\n", deco.field_name);
fprintf(codefile, "(to)->%s = calloc(1, sizeof(*(to)->%s));\n",
deco.field_name, deco.field_name);
fprintf(codefile, "if (%s((from)->%s, (to)->%s)) goto fail;\n",
deco.copy_function_name, deco.field_name, deco.field_name);
fprintf(codefile, "}\n");
} else {
fprintf(codefile, "if (%s(&(from)->%s, &(to)->%s)) goto fail;\n",
deco.copy_function_name, deco.field_name, deco.field_name);
}
} else if (deco.opt) {
/* Decorated with optional field of ASN.1 type */
fprintf(codefile, "if (from->%s) {\n", deco.field_name);
fprintf(codefile, "(to)->%s = calloc(1, sizeof(*(to)->%s));\n", deco.field_name, deco.field_name);
fprintf(codefile, "if (copy_%s((from)->%s, (to)->%s)) goto fail;\n", deco.field_type, deco.field_name, deco.field_name);
fprintf(codefile, "}\n");
} else {
/* Decorated with required field of ASN.1 type */
fprintf(codefile, "if (copy_%s(&(from)->%s, &(to)->%s)) goto fail;\n", deco.field_type, deco.field_name, deco.field_name);
}
used_fail++;
free(deco.field_type);
}
fprintf (codefile, "return 0;\n");
if (used_fail)
fprintf (codefile, "fail:\n"
"free_%s(to);\n"
"return ENOMEM;\n",
s->gen_name);
fprintf(codefile,
"}\n\n");
used_fail = save_used_fail;
}
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