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-rw-r--r--lib/asn1/gen_decode.c295
1 files changed, 153 insertions, 142 deletions
diff --git a/lib/asn1/gen_decode.c b/lib/asn1/gen_decode.c
index face9ba47a04..9d816d5400d7 100644
--- a/lib/asn1/gen_decode.c
+++ b/lib/asn1/gen_decode.c
@@ -1,40 +1,40 @@
/*
- * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
+ * Copyright (c) 1997 - 2006 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:
+ * 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.
+ * 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.
+ * 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.
+ * 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.
+ * 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"
#include "lex.h"
-RCSID("$Id: gen_decode.c 21503 2007-07-12 11:57:19Z lha $");
+RCSID("$Id$");
static void
decode_primitive (const char *typename, const char *name, const char *forwstr)
@@ -56,32 +56,6 @@ decode_primitive (const char *typename, const char *name, const char *forwstr)
#endif
}
-static int
-is_primitive_type(int type)
-{
- switch(type) {
- case TInteger:
- case TBoolean:
- case TOctetString:
- case TBitString:
- case TEnumerated:
- case TGeneralizedTime:
- case TGeneralString:
- case TOID:
- case TUTCTime:
- case TUTF8String:
- case TPrintableString:
- case TIA5String:
- case TBMPString:
- case TUniversalString:
- case TVisibleString:
- case TNull:
- return 1;
- default:
- return 0;
- }
-}
-
static void
find_tag (const Type *t,
Der_class *cl, Der_type *ty, unsigned *tag)
@@ -97,19 +71,24 @@ find_tag (const Type *t,
*ty = PRIM;
*tag = UT_Boolean;
break;
- case TChoice:
+ case TChoice:
errx(1, "Cannot have recursive CHOICE");
case TEnumerated:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_Enumerated;
break;
- case TGeneralString:
+ case TGeneralString:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_GeneralString;
break;
- case TGeneralizedTime:
+ case TTeletexString:
+ *cl = ASN1_C_UNIV;
+ *ty = PRIM;
+ *tag = UT_TeletexString;
+ break;
+ case TGeneralizedTime:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_GeneralizedTime;
@@ -119,7 +98,7 @@ find_tag (const Type *t,
*ty = PRIM;
*tag = UT_IA5String;
break;
- case TInteger:
+ case TInteger:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_Integer;
@@ -129,12 +108,12 @@ find_tag (const Type *t,
*ty = PRIM;
*tag = UT_Null;
break;
- case TOID:
+ case TOID:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_OID;
break;
- case TOctetString:
+ case TOctetString:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_OctetString;
@@ -144,35 +123,35 @@ find_tag (const Type *t,
*ty = PRIM;
*tag = UT_PrintableString;
break;
- case TSequence:
+ case TSequence:
case TSequenceOf:
*cl = ASN1_C_UNIV;
*ty = CONS;
*tag = UT_Sequence;
break;
- case TSet:
+ case TSet:
case TSetOf:
*cl = ASN1_C_UNIV;
*ty = CONS;
*tag = UT_Set;
break;
- case TTag:
+ case TTag:
*cl = t->tag.tagclass;
*ty = is_primitive_type(t->subtype->type) ? PRIM : CONS;
*tag = t->tag.tagvalue;
break;
- case TType:
+ case TType:
if ((t->symbol->stype == Stype && t->symbol->type == NULL)
|| t->symbol->stype == SUndefined) {
- error_message("%s is imported or still undefined, "
- " can't generate tag checking data in CHOICE "
- "without this information",
- t->symbol->name);
+ lex_error_message("%s is imported or still undefined, "
+ " can't generate tag checking data in CHOICE "
+ "without this information",
+ t->symbol->name);
exit(1);
}
find_tag(t->symbol->type, cl, ty, tag);
return;
- case TUTCTime:
+ case TUTCTime:
*cl = ASN1_C_UNIV;
*ty = PRIM;
*tag = UT_UTCTime;
@@ -205,7 +184,7 @@ find_tag (const Type *t,
static void
range_check(const char *name,
const char *length,
- const char *forwstr,
+ const char *forwstr,
struct range *r)
{
if (r->min == r->max + 2 || r->min < r->max)
@@ -229,13 +208,14 @@ range_check(const char *name,
}
static int
-decode_type (const char *name, const Type *t, int optional,
- const char *forwstr, const char *tmpstr)
+decode_type (const char *name, const Type *t, int optional,
+ const char *forwstr, const char *tmpstr, const char *dertype,
+ unsigned int depth)
{
switch (t->type) {
case TType: {
if (optional)
- fprintf(codefile,
+ fprintf(codefile,
"%s = calloc(1, sizeof(*%s));\n"
"if (%s == NULL) %s;\n",
name, name, name, forwstr);
@@ -279,7 +259,7 @@ decode_type (const char *name, const Type *t, int optional,
} else if (t->range->min == 0 && t->range->max == INT_MAX) {
decode_primitive ("unsigned", name, forwstr);
} else
- errx(1, "%s: unsupported range %d -> %d",
+ errx(1, "%s: unsupported range %d -> %d",
name, t->range->min, t->range->max);
break;
case TBoolean:
@@ -289,7 +269,17 @@ decode_type (const char *name, const Type *t, int optional,
decode_primitive ("enumerated", name, forwstr);
break;
case TOctetString:
+ if (dertype) {
+ fprintf(codefile,
+ "if (%s == CONS) {\n",
+ dertype);
+ decode_primitive("octet_string_ber", name, forwstr);
+ fprintf(codefile,
+ "} else {\n");
+ }
decode_primitive ("octet_string", name, forwstr);
+ if (dertype)
+ fprintf(codefile, "}\n");
if (t->range)
range_check(name, "length", forwstr, t->range);
break;
@@ -331,19 +321,19 @@ decode_type (const char *name, const Type *t, int optional,
break;
ASN1_TAILQ_FOREACH(m, t->members, members) {
- char *s;
+ char *s = NULL;
if (m->ellipsis)
continue;
- asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&",
- name, m->gen_name);
- if (s == NULL)
+ if (asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&",
+ name, m->gen_name) < 0 || s == NULL)
errx(1, "malloc");
- decode_type (s, m->type, m->optional, forwstr, m->gen_name);
+ decode_type (s, m->type, m->optional, forwstr, m->gen_name, NULL,
+ depth + 1);
free (s);
}
-
+
break;
}
case TSet: {
@@ -356,7 +346,7 @@ decode_type (const char *name, const Type *t, int optional,
fprintf(codefile, "{\n");
fprintf(codefile, "unsigned int members = 0;\n");
fprintf(codefile, "while(len > 0) {\n");
- fprintf(codefile,
+ fprintf(codefile,
"Der_class class;\n"
"Der_type type;\n"
"int tag;\n"
@@ -374,22 +364,21 @@ decode_type (const char *name, const Type *t, int optional,
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)
+ if (asprintf (&s, "%s(%s)->%s", m->optional ? "" : "&", name, m->gen_name) < 0 || s == NULL)
errx(1, "malloc");
if(m->optional)
- fprintf(codefile,
+ 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, m->gen_name);
+ decode_type (s, m->type, 0, forwstr, m->gen_name, NULL, depth + 1);
free (s);
fprintf(codefile, "members |= (1 << %d);\n", memno);
memno++;
fprintf(codefile, "break;\n");
}
- fprintf(codefile,
+ fprintf(codefile,
"default:\n"
"return ASN1_MISPLACED_FIELD;\n"
"break;\n");
@@ -399,8 +388,7 @@ decode_type (const char *name, const Type *t, int optional,
ASN1_TAILQ_FOREACH(m, t->members, members) {
char *s;
- asprintf (&s, "%s->%s", name, m->gen_name);
- if (s == NULL)
+ if (asprintf (&s, "%s->%s", name, m->gen_name) < 0 || s == NULL)
errx(1, "malloc");
fprintf(codefile, "if((members & (1 << %d)) == 0)\n", memno);
if(m->optional)
@@ -417,8 +405,8 @@ decode_type (const char *name, const Type *t, int optional,
}
case TSetOf:
case TSequenceOf: {
- char *n;
- char *sname;
+ char *n = NULL;
+ char *sname = NULL;
fprintf (codefile,
"{\n"
@@ -449,17 +437,15 @@ decode_type (const char *name, const Type *t, int optional,
tmpstr, tmpstr, forwstr,
tmpstr, tmpstr,
tmpstr, name, tmpstr,
- tmpstr, forwstr,
+ tmpstr, forwstr,
name, tmpstr);
- asprintf (&n, "&(%s)->val[(%s)->len]", name, name);
- if (n == NULL)
+ if (asprintf (&n, "&(%s)->val[(%s)->len]", name, name) < 0 || n == NULL)
errx(1, "malloc");
- asprintf (&sname, "%s_s_of", tmpstr);
- if (sname == NULL)
+ if (asprintf (&sname, "%s_s_of", tmpstr) < 0 || sname == NULL)
errx(1, "malloc");
- decode_type (n, t->subtype, 0, forwstr, sname);
- fprintf (codefile,
+ decode_type (n, t->subtype, 0, forwstr, sname, NULL, depth + 1);
+ fprintf (codefile,
"(%s)->len++;\n"
"len = %s_origlen - ret;\n"
"}\n"
@@ -479,24 +465,44 @@ decode_type (const char *name, const Type *t, int optional,
case TGeneralString:
decode_primitive ("general_string", name, forwstr);
break;
+ case TTeletexString:
+ decode_primitive ("general_string", name, forwstr);
+ break;
case TTag:{
- char *tname;
+ char *tname = NULL, *typestring = NULL;
+ char *ide = NULL;
- fprintf(codefile,
+ if (asprintf(&typestring, "%s_type", tmpstr) < 0 || typestring == NULL)
+ errx(1, "malloc");
+
+ fprintf(codefile,
"{\n"
- "size_t %s_datalen, %s_oldlen;\n",
- tmpstr, tmpstr);
- if(dce_fix)
- fprintf(codefile,
- "int dce_fix;\n");
- fprintf(codefile, "e = der_match_tag_and_length(p, len, %s, %s, %s, "
+ "size_t %s_datalen, %s_oldlen;\n"
+ "Der_type %s;\n",
+ tmpstr, tmpstr, typestring);
+ if(support_ber)
+ fprintf(codefile,
+ "int is_indefinite%u;\n", depth);
+
+ fprintf(codefile, "e = der_match_tag_and_length(p, len, %s, &%s, %s, "
"&%s_datalen, &l);\n",
classname(t->tag.tagclass),
- is_primitive_type(t->subtype->type) ? "PRIM" : "CONS",
+ typestring,
valuename(t->tag.tagclass, t->tag.tagvalue),
tmpstr);
+
+ /* XXX hardcode for now */
+ if (support_ber && t->subtype->type == TOctetString) {
+ ide = typestring;
+ } else {
+ fprintf(codefile,
+ "if (e == 0 && %s != %s) { e = ASN1_BAD_ID; }\n",
+ typestring,
+ is_primitive_type(t->subtype->type) ? "PRIM" : "CONS");
+ }
+
if(optional) {
- fprintf(codefile,
+ fprintf(codefile,
"if(e) {\n"
"%s = NULL;\n"
"} else {\n"
@@ -510,36 +516,45 @@ decode_type (const char *name, const Type *t, int optional,
"p += l; len -= l; ret += l;\n"
"%s_oldlen = len;\n",
tmpstr);
- if(dce_fix)
+ if(support_ber)
fprintf (codefile,
- "if((dce_fix = _heim_fix_dce(%s_datalen, &len)) < 0)\n"
- "{ e = ASN1_BAD_FORMAT; %s; }\n",
- tmpstr, forwstr);
+ "if((is_indefinite%u = _heim_fix_dce(%s_datalen, &len)) < 0)\n"
+ "{ e = ASN1_BAD_FORMAT; %s; }\n"
+ "if (is_indefinite%u) { if (len < 2) { e = ASN1_OVERRUN; %s; } len -= 2; }",
+ depth, tmpstr, forwstr, depth, forwstr);
else
- fprintf(codefile,
+ fprintf(codefile,
"if (%s_datalen > len) { e = ASN1_OVERRUN; %s; }\n"
"len = %s_datalen;\n", tmpstr, forwstr, tmpstr);
- asprintf (&tname, "%s_Tag", tmpstr);
- if (tname == NULL)
+ if (asprintf (&tname, "%s_Tag", tmpstr) < 0 || tname == NULL)
errx(1, "malloc");
- decode_type (name, t->subtype, 0, forwstr, tname);
- if(dce_fix)
+ decode_type (name, t->subtype, 0, forwstr, tname, ide, depth + 1);
+ if(support_ber)
fprintf(codefile,
- "if(dce_fix){\n"
- "e = der_match_tag_and_length (p, len, "
- "(Der_class)0,(Der_type)0, UT_EndOfContent, "
+ "if(is_indefinite%u){\n"
+ "len += 2;\n"
+ "e = der_match_tag_and_length(p, len, "
+ "(Der_class)0, &%s, UT_EndOfContent, "
"&%s_datalen, &l);\n"
- "if(e) %s;\np += l; len -= l; ret += l;\n"
- "} else \n", tmpstr, forwstr);
- fprintf(codefile,
+ "if(e) %s;\n"
+ "p += l; len -= l; ret += l;\n"
+ "if (%s != (Der_type)0) { e = ASN1_BAD_ID; %s; }\n"
+ "} else \n",
+ depth,
+ typestring,
+ tmpstr,
+ forwstr,
+ typestring, forwstr);
+ fprintf(codefile,
"len = %s_oldlen - %s_datalen;\n",
tmpstr, tmpstr);
if(optional)
- fprintf(codefile,
+ fprintf(codefile,
"}\n");
- fprintf(codefile,
+ fprintf(codefile,
"}\n");
free(tname);
+ free(typestring);
break;
}
case TChoice: {
@@ -551,11 +566,11 @@ decode_type (const char *name, const Type *t, int optional,
ASN1_TAILQ_FOREACH(m, t->members, members) {
const Type *tt = m->type;
- char *s;
+ char *s = NULL;
Der_class cl;
Der_type ty;
unsigned tag;
-
+
if (m->ellipsis) {
have_ellipsis = m;
continue;
@@ -569,11 +584,11 @@ decode_type (const char *name, const Type *t, int optional,
classname(cl),
ty ? "CONS" : "PRIM",
valuename(cl, tag));
- asprintf (&s, "%s(%s)->u.%s", m->optional ? "" : "&",
- name, m->gen_name);
- if (s == NULL)
+ if (asprintf (&s, "%s(%s)->u.%s", m->optional ? "" : "&",
+ name, m->gen_name) < 0 || s == NULL)
errx(1, "malloc");
- decode_type (s, m->type, m->optional, forwstr, m->gen_name);
+ decode_type (s, m->type, m->optional, forwstr, m->gen_name, NULL,
+ depth + 1);
fprintf(codefile,
"(%s)->element = %s;\n",
name, m->label);
@@ -594,11 +609,11 @@ decode_type (const char *name, const Type *t, int optional,
"(%s)->element = %s;\n"
"p += len;\n"
"ret += len;\n"
- "len -= len;\n"
+ "len = 0;\n"
"}\n",
name, have_ellipsis->gen_name,
name, have_ellipsis->gen_name,
- forwstr,
+ forwstr,
name, have_ellipsis->gen_name,
name, have_ellipsis->gen_name,
name, have_ellipsis->label);
@@ -650,14 +665,9 @@ generate_type_decode (const Symbol *s)
{
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, "int\n"
- "decode_%s(const unsigned char *p,"
- " size_t len, %s *data, size_t *size)\n"
+ fprintf (codefile, "int ASN1CALL\n"
+ "decode_%s(const unsigned char *p HEIMDAL_UNUSED_ATTRIBUTE,"
+ " size_t len HEIMDAL_UNUSED_ATTRIBUTE, %s *data, size_t *size)\n"
"{\n",
s->gen_name, s->gen_name);
@@ -668,6 +678,7 @@ generate_type_decode (const Symbol *s)
case TOID:
case TGeneralizedTime:
case TGeneralString:
+ case TTeletexString:
case TUTF8String:
case TPrintableString:
case TIA5String:
@@ -687,15 +698,15 @@ generate_type_decode (const Symbol *s)
case TChoice:
fprintf (codefile,
"size_t ret = 0;\n"
- "size_t l;\n"
- "int e;\n");
+ "size_t l HEIMDAL_UNUSED_ATTRIBUTE;\n"
+ "int e HEIMDAL_UNUSED_ATTRIBUTE;\n");
if (preserve)
fprintf (codefile, "const unsigned char *begin = p;\n");
fprintf (codefile, "\n");
fprintf (codefile, "memset(data, 0, sizeof(*data));\n"); /* hack to avoid `unused variable' */
- decode_type ("data", s->type, 0, "goto fail", "Top");
+ decode_type ("data", s->type, 0, "goto fail", "Top", NULL, 1);
if (preserve)
fprintf (codefile,
"data->_save.data = calloc(1, ret);\n"
@@ -704,7 +715,7 @@ generate_type_decode (const Symbol *s)
"}\n"
"data->_save.length = ret;\n"
"memcpy(data->_save.data, begin, ret);\n");
- fprintf (codefile,
+ fprintf (codefile,
"if(size) *size = ret;\n"
"return 0;\n");
fprintf (codefile,
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 15:17:04 +0000