Commit much improved ASN.1 compiler from joda-choice-branch.
Highlighs for the compiler is support for CHOICE and in general better support for tags. This compiler support most of what is needed for PK-INIT, LDAP, X.509, PKCS-12 and many other protocols. git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15617 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
@@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1997 - 2001 Kungliga Tekniska H<>gskolan
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* Copyright (c) 1997 - 2005 Kungliga Tekniska H<>gskolan
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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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@@ -36,284 +36,538 @@
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RCSID("$Id$");
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static void
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decode_primitive (const char *typename, const char *name)
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decode_primitive (const char *typename, const char *name, const char *forwstr)
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{
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#if 0
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fprintf (codefile,
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"e = decode_%s(p, len, %s, &l);\n"
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"FORW;\n",
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"%s;\n",
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typename,
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name);
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name,
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forwstr);
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#else
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fprintf (codefile,
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"e = der_get_%s(p, len, %s, &l);\n"
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"if(e) %s;\np += l; len -= l; ret += l;\n",
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typename,
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name,
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forwstr);
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#endif
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}
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static int
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is_primitive_type(int type)
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{
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switch(type) {
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case TInteger:
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case TBoolean:
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case TOctetString:
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case TBitString:
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case TEnumerated:
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case TGeneralizedTime:
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case TGeneralString:
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case TOID:
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case TUTCTime:
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case TUTF8String:
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case TPrintableString:
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case TIA5String:
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case TBMPString:
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case TUniversalString:
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case TNull:
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return 1;
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default:
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return 0;
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}
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}
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static void
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decode_type (const char *name, const Type *t)
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find_tag (const Type *t,
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Der_class *cl, Der_type *ty, unsigned *tag)
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{
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switch (t->type) {
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case TType:
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#if 0
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decode_type (name, t->symbol->type);
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#endif
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fprintf (codefile,
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"e = decode_%s(p, len, %s, &l);\n"
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"FORW;\n",
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t->symbol->gen_name, name);
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case TBitString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_BitString;
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break;
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case TInteger:
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if(t->members == NULL)
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decode_primitive ("integer", name);
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else {
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char *s;
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asprintf(&s, "(int*)%s", name);
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if(s == NULL)
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errx (1, "out of memory");
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decode_primitive ("integer", s);
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free(s);
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case TBoolean:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_Boolean;
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break;
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case TChoice:
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errx(1, "Cannot have recursive CHOICE");
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case TEnumerated:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_Enumerated;
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break;
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case TGeneralString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_GeneralString;
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break;
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case TGeneralizedTime:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_GeneralizedTime;
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break;
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case TIA5String:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_IA5String;
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break;
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case TInteger:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_Integer;
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break;
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case TNull:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_Null;
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break;
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case TOID:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_OID;
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break;
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case TOctetString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_OctetString;
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break;
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case TPrintableString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_PrintableString;
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break;
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case TSequence:
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case TSequenceOf:
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*cl = ASN1_C_UNIV;
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*ty = CONS;
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*tag = UT_Sequence;
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break;
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case TSet:
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case TSetOf:
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*cl = ASN1_C_UNIV;
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*ty = CONS;
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*tag = UT_Set;
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break;
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case TTag:
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*cl = t->tag.tagclass;
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*ty = is_primitive_type(t->subtype->type) ? PRIM : CONS;
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*tag = t->tag.tagvalue;
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break;
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case TType:
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return find_tag(t->symbol->type, cl, ty, tag);
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case TUTCTime:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_UTCTime;
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break;
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case TUTF8String:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_UTF8String;
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break;
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case TBMPString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_BMPString;
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break;
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case TUniversalString:
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*cl = ASN1_C_UNIV;
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*ty = PRIM;
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*tag = UT_UniversalString;
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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 int
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decode_type (const char *name, const Type *t, int optional,
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const char *forwstr)
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{
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switch (t->type) {
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case TType: {
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if (optional)
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fprintf(codefile,
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"%s = calloc(1, sizeof(*%s));\n"
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"if (%s == NULL) %s;\n",
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name, name, name, forwstr);
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fprintf (codefile,
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"e = decode_%s(p, len, %s, &l);\n",
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t->symbol->gen_name, name);
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if (optional) {
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fprintf (codefile,
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"if(e) {\n"
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"free(%s);\n"
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"%s = NULL;\n"
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"} else {\n"
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"p += l; len -= l; ret += l;\n"
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"}\n",
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name, name);
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} else {
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fprintf (codefile,
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"if(e) %s;\n",
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forwstr);
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fprintf (codefile,
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"p += l; len -= l; ret += l;\n");
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}
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break;
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case TUInteger:
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decode_primitive ("unsigned", name);
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}
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case TInteger:
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if(t->members) {
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char *s;
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asprintf(&s, "(int*)%s", name);
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if (s == NULL)
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errx (1, "out of memory");
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decode_primitive ("integer", s, forwstr);
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free(s);
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} else if (t->range == NULL) {
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decode_primitive ("heim_integer", name, forwstr);
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} else if (t->range->min == INT_MIN && t->range->max == INT_MAX) {
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decode_primitive ("integer", name, forwstr);
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} else if (t->range->min == 0 && t->range->max == UINT_MAX) {
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decode_primitive ("unsigned", name, forwstr);
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} else if (t->range->min == 0 && t->range->max == INT_MAX) {
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decode_primitive ("unsigned", name, forwstr);
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} else
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errx(1, "%s: unsupported range %d -> %d",
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name, t->range->min, t->range->max);
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break;
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case TBoolean:
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decode_primitive ("boolean", name, forwstr);
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break;
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case TEnumerated:
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decode_primitive ("enumerated", name);
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decode_primitive ("enumerated", name, forwstr);
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break;
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case TOctetString:
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decode_primitive ("octet_string", name);
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break;
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case TOID :
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decode_primitive ("oid", name);
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decode_primitive ("octet_string", name, forwstr);
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break;
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case TBitString: {
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Member *m;
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int tag = -1;
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int pos;
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int pos = 0;
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fprintf (codefile,
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"e = der_match_tag_and_length (p, len, ASN1_C_UNIV, PRIM, UT_BitString,"
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"&reallen, &l);\n"
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"FORW;\n"
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"if(len < reallen)\n"
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"return ASN1_OVERRUN;\n"
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"p++;\n"
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"len--;\n"
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"reallen--;\n"
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"ret++;\n");
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pos = 0;
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for (m = t->members; m && tag != m->val; m = m->next) {
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if (ASN1_TAILQ_EMPTY(t->members)) {
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decode_primitive ("bit_string", name, forwstr);
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break;
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}
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fprintf(codefile,
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"if (len < 1) return ASN1_OVERRUN;\n"
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"p++; len--; ret++;\n");
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fprintf(codefile,
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"do {\n"
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"if (len < 1) break;\n");
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ASN1_TAILQ_FOREACH(m, t->members, members) {
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while (m->val / 8 > pos / 8) {
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fprintf (codefile,
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"p++; len--; reallen--; ret++;\n");
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"p++; len--; ret++;\n"
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"if (len < 1) break;\n");
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pos += 8;
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}
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fprintf (codefile,
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"%s->%s = (*p >> %d) & 1;\n",
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"(%s)->%s = (*p >> %d) & 1;\n",
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name, m->gen_name, 7 - m->val % 8);
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if (tag == -1)
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tag = m->val;
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}
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fprintf(codefile,
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"} while(0);\n");
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fprintf (codefile,
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"p += reallen; len -= reallen; ret += reallen;\n");
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"p += len; ret += len;\n");
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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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int fd_counter = unique_get_next();
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int fd_counter_inner = unique_get_next();
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if (t->members == NULL)
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break;
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fprintf (codefile,
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"e = der_match_tag_and_length (p, len, ASN1_C_UNIV, CONS, UT_Sequence,"
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"&reallen, &l);\n"
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"FORW;\n"
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"{\n"
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"int dce_fix%d;\n"
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"if((dce_fix%d = fix_dce(reallen, &len)) < 0)\n"
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"return ASN1_BAD_FORMAT;\n",
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fd_counter, fd_counter);
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for (m = t->members; m && tag != m->val; m = m->next) {
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ASN1_TAILQ_FOREACH(m, t->members, members) {
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char *s;
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asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", name, m->gen_name);
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if (0 && m->type->type == TType){
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if(m->optional)
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fprintf (codefile,
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"%s = malloc(sizeof(*%s));\n"
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"if(%s == NULL) return ENOMEM;\n", s, s, s);
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fprintf (codefile,
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"e = decode_seq_%s(p, len, %d, %d, %s, &l);\n",
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m->type->symbol->gen_name,
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m->val,
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m->optional,
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s);
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if(m->optional)
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fprintf (codefile,
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"if (e == ASN1_MISSING_FIELD) {\n"
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"free(%s);\n"
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"%s = NULL;\n"
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"e = l = 0;\n"
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"}\n",
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s, s);
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fprintf (codefile, "FORW;\n");
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|
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}else{
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fprintf (codefile, "{\n"
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"size_t newlen, oldlen;\n\n"
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"e = der_match_tag (p, len, ASN1_C_CONTEXT, CONS, %d, &l);\n",
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m->val);
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fprintf (codefile,
|
||||
"if (e)\n");
|
||||
if(m->optional)
|
||||
/* XXX should look at e */
|
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fprintf (codefile,
|
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"%s = NULL;\n", s);
|
||||
else
|
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fprintf (codefile,
|
||||
"return e;\n");
|
||||
fprintf (codefile,
|
||||
"else {\n");
|
||||
fprintf (codefile,
|
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"p += l;\n"
|
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"len -= l;\n"
|
||||
"ret += l;\n"
|
||||
"e = der_get_length (p, len, &newlen, &l);\n"
|
||||
"FORW;\n"
|
||||
"{\n"
|
||||
|
||||
"int dce_fix%d;\n"
|
||||
"oldlen = len;\n"
|
||||
"if((dce_fix%d = fix_dce(newlen, &len)) < 0)"
|
||||
"return ASN1_BAD_FORMAT;\n",
|
||||
fd_counter_inner,
|
||||
fd_counter_inner);
|
||||
if (m->optional)
|
||||
fprintf (codefile,
|
||||
"%s = malloc(sizeof(*%s));\n"
|
||||
"if(%s == NULL) return ENOMEM;\n", s, s, s);
|
||||
decode_type (s, m->type);
|
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fprintf (codefile,
|
||||
"if(dce_fix%d){\n"
|
||||
"e = der_match_tag_and_length (p, len, "
|
||||
"(Der_class)0, (Der_type)0, 0, &reallen, &l);\n"
|
||||
"FORW;\n"
|
||||
"}else \n"
|
||||
"len = oldlen - newlen;\n"
|
||||
"}\n"
|
||||
"}\n",
|
||||
fd_counter_inner);
|
||||
fprintf (codefile,
|
||||
"}\n");
|
||||
}
|
||||
if (tag == -1)
|
||||
tag = m->val;
|
||||
if (m->ellipsis)
|
||||
continue;
|
||||
|
||||
asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&",
|
||||
name, m->gen_name);
|
||||
if (s == NULL)
|
||||
errx(1, "malloc");
|
||||
decode_type (s, m->type, m->optional, forwstr);
|
||||
free (s);
|
||||
}
|
||||
fprintf(codefile,
|
||||
"if(dce_fix%d){\n"
|
||||
"e = der_match_tag_and_length (p, len, "
|
||||
"(Der_class)0, (Der_type)0, 0, &reallen, &l);\n"
|
||||
"FORW;\n"
|
||||
"}\n"
|
||||
"}\n",
|
||||
fd_counter);
|
||||
|
||||
break;
|
||||
}
|
||||
case TSet: {
|
||||
Member *m;
|
||||
unsigned int memno;
|
||||
|
||||
if(t->members == NULL)
|
||||
break;
|
||||
|
||||
fprintf(codefile, "{\n");
|
||||
fprintf(codefile, "unsigned int members = 0;\n");
|
||||
fprintf(codefile, "while(len > 0) {\n");
|
||||
fprintf(codefile,
|
||||
"Der_class class;\n"
|
||||
"Der_type type;\n"
|
||||
"int tag;\n"
|
||||
"e = der_get_tag (p, len, &class, &type, &tag, NULL);\n"
|
||||
"if(e) %s;\n", forwstr);
|
||||
fprintf(codefile, "switch (MAKE_TAG(class, type, tag)) {\n");
|
||||
memno = 0;
|
||||
ASN1_TAILQ_FOREACH(m, t->members, members) {
|
||||
char *s;
|
||||
|
||||
assert(m->type->type == TTag);
|
||||
|
||||
fprintf(codefile, "case MAKE_TAG(%s, %s, %s):\n",
|
||||
classname(m->type->tag.tagclass),
|
||||
is_primitive_type(m->type->subtype->type) ? "PRIM" : "CONS",
|
||||
valuename(m->type->tag.tagclass, m->type->tag.tagvalue));
|
||||
|
||||
asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", name, m->gen_name);
|
||||
if (s == NULL)
|
||||
errx(1, "malloc");
|
||||
if(m->optional)
|
||||
fprintf(codefile,
|
||||
"%s = calloc(1, sizeof(*%s));\n"
|
||||
"if (%s == NULL) { e = ENOMEM; %s; }\n",
|
||||
s, s, s, forwstr);
|
||||
decode_type (s, m->type, 0, forwstr);
|
||||
free (s);
|
||||
|
||||
fprintf(codefile, "members |= (1 << %d);\n", memno);
|
||||
memno++;
|
||||
fprintf(codefile, "break;\n");
|
||||
}
|
||||
fprintf(codefile,
|
||||
"default:\n"
|
||||
"return ASN1_MISPLACED_FIELD;\n"
|
||||
"break;\n");
|
||||
fprintf(codefile, "}\n");
|
||||
fprintf(codefile, "}\n");
|
||||
memno = 0;
|
||||
ASN1_TAILQ_FOREACH(m, t->members, members) {
|
||||
char *s;
|
||||
|
||||
asprintf (&s, "%s->%s", name, m->gen_name);
|
||||
if (s == NULL)
|
||||
errx(1, "malloc");
|
||||
fprintf(codefile, "if((members & (1 << %d)) == 0)\n", memno);
|
||||
if(m->optional)
|
||||
fprintf(codefile, "%s = NULL;\n", s);
|
||||
else if(m->defval)
|
||||
gen_assign_defval(s, m->defval);
|
||||
else
|
||||
fprintf(codefile, "return ASN1_MISSING_FIELD;\n");
|
||||
free(s);
|
||||
memno++;
|
||||
}
|
||||
fprintf(codefile, "}\n");
|
||||
break;
|
||||
}
|
||||
case TSetOf:
|
||||
case TSequenceOf: {
|
||||
char *n;
|
||||
int oldret_counter = unique_get_next();
|
||||
|
||||
fprintf (codefile,
|
||||
"e = der_match_tag_and_length (p, len, ASN1_C_UNIV, CONS, UT_Sequence,"
|
||||
"&reallen, &l);\n"
|
||||
"FORW;\n"
|
||||
"if(len < reallen)\n"
|
||||
"return ASN1_OVERRUN;\n"
|
||||
"len = reallen;\n");
|
||||
|
||||
fprintf (codefile,
|
||||
"{\n"
|
||||
"size_t origlen = len;\n"
|
||||
"int oldret%d = ret;\n"
|
||||
"size_t oldret = ret;\n"
|
||||
"void *tmp;\n"
|
||||
"ret = 0;\n"
|
||||
"(%s)->len = 0;\n"
|
||||
"(%s)->val = NULL;\n"
|
||||
"while(ret < origlen) {\n"
|
||||
"tmp = realloc((%s)->val, "
|
||||
" sizeof(*((%s)->val)) * ((%s)->len + 1));\n"
|
||||
"if (tmp == NULL) { %s; }\n"
|
||||
"(%s)->len++;\n"
|
||||
"(%s)->val = realloc((%s)->val, sizeof(*((%s)->val)) * (%s)->len);\n",
|
||||
oldret_counter, name, name, name, name, name, name, name);
|
||||
"(%s)->val = tmp;\n",
|
||||
name, name, name, name, name, forwstr, name, name);
|
||||
|
||||
asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name);
|
||||
decode_type (n, t->subtype);
|
||||
if (n == NULL)
|
||||
errx(1, "malloc");
|
||||
decode_type (n, t->subtype, 0, forwstr);
|
||||
fprintf (codefile,
|
||||
"len = origlen - ret;\n"
|
||||
"}\n"
|
||||
"ret += oldret%d;\n"
|
||||
"}\n",
|
||||
oldret_counter);
|
||||
"ret += oldret;\n"
|
||||
"}\n");
|
||||
free (n);
|
||||
break;
|
||||
}
|
||||
case TGeneralizedTime:
|
||||
decode_primitive ("generalized_time", name);
|
||||
decode_primitive ("generalized_time", name, forwstr);
|
||||
break;
|
||||
case TGeneralString:
|
||||
decode_primitive ("general_string", name);
|
||||
decode_primitive ("general_string", name, forwstr);
|
||||
break;
|
||||
case TTag:{
|
||||
fprintf(codefile,
|
||||
"{\n"
|
||||
"int tagdatalen;\n"
|
||||
"size_t oldlen;\n");
|
||||
if(dce_fix)
|
||||
fprintf(codefile,
|
||||
"int dce_fix;\n");
|
||||
fprintf(codefile, "e = der_match_tag_and_length(p, len, %s, %s, %s, "
|
||||
"&tagdatalen, &l);\n",
|
||||
classname(t->tag.tagclass),
|
||||
is_primitive_type(t->subtype->type) ? "PRIM" : "CONS",
|
||||
valuename(t->tag.tagclass, t->tag.tagvalue));
|
||||
if(optional) {
|
||||
fprintf(codefile,
|
||||
"if(e) {\n"
|
||||
"%s = NULL;\n"
|
||||
"} else {\n"
|
||||
"%s = calloc(1, sizeof(*%s));\n"
|
||||
"if (%s == NULL) { e = ENOMEM; %s; }\n",
|
||||
name, name, name, name, forwstr);
|
||||
} else {
|
||||
fprintf(codefile, "if(e) %s;\n", forwstr);
|
||||
}
|
||||
fprintf (codefile,
|
||||
"p += l; len -= l; ret += l;\n"
|
||||
"oldlen = len;\n");
|
||||
if(dce_fix)
|
||||
fprintf (codefile,
|
||||
"if((dce_fix = _heim_fix_dce(tagdatalen, &len)) < 0)\n"
|
||||
"{ e = ASN1_BAD_FORMAT; %s; }\n",
|
||||
forwstr);
|
||||
else
|
||||
fprintf(codefile,
|
||||
"if (tagdatalen > len) { e = ASN1_OVERRUN; %s; }\n"
|
||||
"len = tagdatalen;\n", forwstr);
|
||||
decode_type (name, t->subtype, 0, forwstr);
|
||||
if(dce_fix)
|
||||
fprintf(codefile,
|
||||
"if(dce_fix){\n"
|
||||
"e = der_match_tag_and_length (p, len, "
|
||||
"(Der_class)0,(Der_type)0, UT_EndOfContent, "
|
||||
"&tagdatalen, &l);\n"
|
||||
"if(e) %s;\np += l; len -= l; ret += l;\n"
|
||||
"} else \n", forwstr);
|
||||
fprintf(codefile,
|
||||
"len = oldlen - tagdatalen;\n");
|
||||
if(optional)
|
||||
fprintf(codefile,
|
||||
"}\n");
|
||||
fprintf(codefile,
|
||||
"}\n");
|
||||
break;
|
||||
}
|
||||
case TChoice: {
|
||||
Member *m, *have_ellipsis = NULL;
|
||||
const char *els = "";
|
||||
|
||||
if (t->members == NULL)
|
||||
break;
|
||||
|
||||
ASN1_TAILQ_FOREACH(m, t->members, members) {
|
||||
const Type *tt = m->type;
|
||||
char *s;
|
||||
Der_class cl;
|
||||
Der_type ty;
|
||||
unsigned tag;
|
||||
|
||||
if (m->ellipsis) {
|
||||
have_ellipsis = m;
|
||||
continue;
|
||||
}
|
||||
|
||||
find_tag(tt, &cl, &ty, &tag);
|
||||
|
||||
fprintf(codefile,
|
||||
"%sif (der_match_tag(p, len, %s, %s, %s, NULL) == 0) {\n",
|
||||
els,
|
||||
classname(cl),
|
||||
ty ? "CONS" : "PRIM",
|
||||
valuename(cl, tag));
|
||||
asprintf (&s, "%s(%s)->u.%s", m->optional ? "" : "&",
|
||||
name, m->gen_name);
|
||||
if (s == NULL)
|
||||
errx(1, "malloc");
|
||||
decode_type (s, m->type, m->optional, forwstr);
|
||||
free(s);
|
||||
fprintf(codefile,
|
||||
"}\n");
|
||||
els = "else ";
|
||||
}
|
||||
if (have_ellipsis) {
|
||||
fprintf(codefile,
|
||||
"else {\n"
|
||||
"(%s)->u.%s.data = calloc(1, len);\n"
|
||||
"if ((%s)->u.%s.data == NULL) {\n"
|
||||
"e = ENOMEM; %s;\n"
|
||||
"}\n"
|
||||
"(%s)->u.%s.length = len;\n"
|
||||
"memcpy((%s)->u.%s.data, p, len);\n"
|
||||
"(%s)->element = %s;\n"
|
||||
"p += len;\n"
|
||||
"ret += len;\n"
|
||||
"len -= len;\n"
|
||||
"}\n",
|
||||
name, have_ellipsis->gen_name,
|
||||
name, have_ellipsis->gen_name,
|
||||
forwstr,
|
||||
name, have_ellipsis->gen_name,
|
||||
name, have_ellipsis->gen_name,
|
||||
name, have_ellipsis->label);
|
||||
} else {
|
||||
fprintf(codefile,
|
||||
"else {\n"
|
||||
"e = ASN1_PARSE_ERROR;\n"
|
||||
"%s;\n"
|
||||
"}\n",
|
||||
forwstr);
|
||||
}
|
||||
break;
|
||||
}
|
||||
case TUTCTime:
|
||||
decode_primitive ("utctime", name, forwstr);
|
||||
break;
|
||||
case TUTF8String:
|
||||
decode_primitive ("utf8string", name);
|
||||
decode_primitive ("utf8string", name, forwstr);
|
||||
break;
|
||||
case TPrintableString:
|
||||
decode_primitive ("printable_string", name, forwstr);
|
||||
break;
|
||||
case TIA5String:
|
||||
decode_primitive ("ia5_string", name, forwstr);
|
||||
break;
|
||||
case TBMPString:
|
||||
decode_primitive ("bmp_string", name, forwstr);
|
||||
break;
|
||||
case TUniversalString:
|
||||
decode_primitive ("universal_string", name, forwstr);
|
||||
break;
|
||||
case TNull:
|
||||
fprintf (codefile,
|
||||
"e = decode_nulltype(p, len, &l);\n"
|
||||
"FORW;\n");
|
||||
fprintf (codefile, "/* NULL */\n");
|
||||
break;
|
||||
case TApplication:
|
||||
fprintf (codefile,
|
||||
"e = der_match_tag_and_length (p, len, ASN1_C_APPL, CONS, %d, "
|
||||
"&reallen, &l);\n"
|
||||
"FORW;\n"
|
||||
"{\n"
|
||||
"int dce_fix;\n"
|
||||
"if((dce_fix = fix_dce(reallen, &len)) < 0)\n"
|
||||
"return ASN1_BAD_FORMAT;\n",
|
||||
t->application);
|
||||
decode_type (name, t->subtype);
|
||||
fprintf(codefile,
|
||||
"if(dce_fix){\n"
|
||||
"e = der_match_tag_and_length (p, len, "
|
||||
"(Der_class)0, (Der_type)0, 0, &reallen, &l);\n"
|
||||
"FORW;\n"
|
||||
"}\n"
|
||||
"}\n");
|
||||
|
||||
break;
|
||||
case TBoolean:
|
||||
decode_primitive ("boolean", name);
|
||||
case TOID:
|
||||
decode_primitive ("oid", name, forwstr);
|
||||
break;
|
||||
default :
|
||||
abort ();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
generate_type_decode (const Symbol *s)
|
||||
{
|
||||
unique_reset();
|
||||
int preserve = preserve_type(s->name) ? TRUE : FALSE;
|
||||
|
||||
fprintf (headerfile,
|
||||
"int "
|
||||
"decode_%s(const unsigned char *, size_t, %s *, size_t *);\n",
|
||||
s->gen_name, s->gen_name);
|
||||
|
||||
fprintf (codefile, "#define FORW "
|
||||
"if(e) goto fail; "
|
||||
"p += l; "
|
||||
"len -= l; "
|
||||
"ret += l\n\n");
|
||||
|
||||
|
||||
fprintf (codefile, "int\n"
|
||||
"decode_%s(const unsigned char *p,"
|
||||
" size_t len, %s *data, size_t *size)\n"
|
||||
@@ -322,28 +576,45 @@ generate_type_decode (const Symbol *s)
|
||||
|
||||
switch (s->type->type) {
|
||||
case TInteger:
|
||||
case TUInteger:
|
||||
case TBoolean:
|
||||
case TOctetString:
|
||||
case TOID:
|
||||
case TGeneralizedTime:
|
||||
case TGeneralString:
|
||||
case TUTF8String:
|
||||
case TPrintableString:
|
||||
case TIA5String:
|
||||
case TBMPString:
|
||||
case TUniversalString:
|
||||
case TUTCTime:
|
||||
case TNull:
|
||||
case TEnumerated:
|
||||
case TBitString:
|
||||
case TSequence:
|
||||
case TSequenceOf:
|
||||
case TApplication:
|
||||
case TSet:
|
||||
case TSetOf:
|
||||
case TTag:
|
||||
case TType:
|
||||
case TChoice:
|
||||
fprintf (codefile,
|
||||
"size_t ret = 0, reallen;\n"
|
||||
"size_t l;\n"
|
||||
"int e;\n\n");
|
||||
"int e;\n");
|
||||
if (preserve)
|
||||
fprintf (codefile, "const unsigned char *begin = p;\n");
|
||||
|
||||
fprintf (codefile, "\n");
|
||||
fprintf (codefile, "memset(data, 0, sizeof(*data));\n");
|
||||
fprintf (codefile, "reallen = 0;\n"); /* hack to avoid `unused variable' */
|
||||
|
||||
decode_type ("data", s->type);
|
||||
decode_type ("data", s->type, 0, "goto fail");
|
||||
if (preserve)
|
||||
fprintf (codefile,
|
||||
"data->_save.data = calloc(1, ret);\n"
|
||||
"if (data->_save.data == NULL) { e = ENOMEM; goto fail; }\n"
|
||||
"data->_save.length = ret;\n"
|
||||
"memcpy(data->_save.data, begin, ret);\n");
|
||||
fprintf (codefile,
|
||||
"if(size) *size = ret;\n"
|
||||
"return 0;\n");
|
||||
@@ -358,62 +629,3 @@ generate_type_decode (const Symbol *s)
|
||||
}
|
||||
fprintf (codefile, "}\n\n");
|
||||
}
|
||||
|
||||
void
|
||||
generate_seq_type_decode (const Symbol *s)
|
||||
{
|
||||
fprintf (headerfile,
|
||||
"int decode_seq_%s(const unsigned char *, size_t, int, int, "
|
||||
"%s *, size_t *);\n",
|
||||
s->gen_name, s->gen_name);
|
||||
|
||||
fprintf (codefile, "int\n"
|
||||
"decode_seq_%s(const unsigned char *p, size_t len, int tag, "
|
||||
"int optional, %s *data, size_t *size)\n"
|
||||
"{\n",
|
||||
s->gen_name, s->gen_name);
|
||||
|
||||
fprintf (codefile,
|
||||
"size_t newlen, oldlen;\n"
|
||||
"size_t l, ret = 0;\n"
|
||||
"int e;\n"
|
||||
"int dce_fix;\n");
|
||||
|
||||
fprintf (codefile,
|
||||
"e = der_match_tag(p, len, ASN1_C_CONTEXT, CONS, tag, &l);\n"
|
||||
"if (e)\n"
|
||||
"return e;\n");
|
||||
fprintf (codefile,
|
||||
"p += l;\n"
|
||||
"len -= l;\n"
|
||||
"ret += l;\n"
|
||||
"e = der_get_length(p, len, &newlen, &l);\n"
|
||||
"if (e)\n"
|
||||
"return e;\n"
|
||||
"p += l;\n"
|
||||
"len -= l;\n"
|
||||
"ret += l;\n"
|
||||
"oldlen = len;\n"
|
||||
"if ((dce_fix = fix_dce(newlen, &len)) < 0)\n"
|
||||
"return ASN1_BAD_FORMAT;\n"
|
||||
"e = decode_%s(p, len, data, &l);\n"
|
||||
"if (e)\n"
|
||||
"return e;\n"
|
||||
"p += l;\n"
|
||||
"len -= l;\n"
|
||||
"ret += l;\n"
|
||||
"if (dce_fix) {\n"
|
||||
"size_t reallen;\n\n"
|
||||
"e = der_match_tag_and_length(p, len, "
|
||||
"(Der_class)0, (Der_type)0, 0, &reallen, &l);\n"
|
||||
"if (e)\n"
|
||||
"return e;\n"
|
||||
"ret += l;\n"
|
||||
"}\n",
|
||||
s->gen_name);
|
||||
fprintf (codefile,
|
||||
"if(size) *size = ret;\n"
|
||||
"return 0;\n");
|
||||
|
||||
fprintf (codefile, "}\n\n");
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user