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path: root/source4/heimdal/lib/asn1/gen_decode.c
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Diffstat (limited to 'source4/heimdal/lib/asn1/gen_decode.c')
-rw-r--r--source4/heimdal/lib/asn1/gen_decode.c214
1 files changed, 119 insertions, 95 deletions
diff --git a/source4/heimdal/lib/asn1/gen_decode.c b/source4/heimdal/lib/asn1/gen_decode.c
index ff75113576..42ceb37e62 100644
--- a/source4/heimdal/lib/asn1/gen_decode.c
+++ b/source4/heimdal/lib/asn1/gen_decode.c
@@ -34,7 +34,7 @@
#include "gen_locl.h"
#include "lex.h"
-RCSID("$Id: gen_decode.c,v 1.27 2005/07/19 18:09:30 lha Exp $");
+RCSID("$Id: gen_decode.c,v 1.28 2005/08/23 11:51:25 lha Exp $");
static void
decode_primitive (const char *typename, const char *name, const char *forwstr)
@@ -198,7 +198,7 @@ find_tag (const Type *t,
static int
decode_type (const char *name, const Type *t, int optional,
- const char *forwstr)
+ const char *forwstr, const char *tmpstr)
{
switch (t->type) {
case TType: {
@@ -304,7 +304,7 @@ decode_type (const char *name, const Type *t, int optional,
name, m->gen_name);
if (s == NULL)
errx(1, "malloc");
- decode_type (s, m->type, m->optional, forwstr);
+ decode_type (s, m->type, m->optional, forwstr, m->gen_name);
free (s);
}
@@ -346,7 +346,7 @@ decode_type (const char *name, const Type *t, int optional,
"%s = calloc(1, sizeof(*%s));\n"
"if (%s == NULL) { e = ENOMEM; %s; }\n",
s, s, s, forwstr);
- decode_type (s, m->type, 0, forwstr);
+ decode_type (s, m->type, 0, forwstr, m->gen_name);
free (s);
fprintf(codefile, "members |= (1 << %d);\n", memno);
@@ -382,33 +382,45 @@ decode_type (const char *name, const Type *t, int optional,
case TSetOf:
case TSequenceOf: {
char *n;
+ char *sname;
fprintf (codefile,
"{\n"
- "size_t origlen = len;\n"
- "size_t oldret = ret;\n"
- "void *tmp;\n"
+ "size_t %s_origlen = len;\n"
+ "size_t %s_oldret = ret;\n"
+ "void *%s_tmp;\n"
"ret = 0;\n"
"(%s)->len = 0;\n"
"(%s)->val = NULL;\n"
- "while(ret < origlen) {\n"
- "tmp = realloc((%s)->val, "
+ "while(ret < %s_origlen) {\n"
+ "%s_tmp = realloc((%s)->val, "
" sizeof(*((%s)->val)) * ((%s)->len + 1));\n"
- "if (tmp == NULL) { %s; }\n"
+ "if (%s_tmp == NULL) { %s; }\n"
"(%s)->len++;\n"
- "(%s)->val = tmp;\n",
- name, name, name, name, name, forwstr, name, name);
+ "(%s)->val = %s_tmp;\n",
+ tmpstr, tmpstr, tmpstr,
+ name, name,
+ tmpstr, tmpstr,
+ name, name, name,
+ tmpstr,
+ forwstr, name, name,
+ tmpstr);
asprintf (&n, "&(%s)->val[(%s)->len-1]", name, name);
if (n == NULL)
errx(1, "malloc");
- decode_type (n, t->subtype, 0, forwstr);
+ asprintf (&sname, "%s_s_of", tmpstr);
+ if (sname == NULL)
+ errx(1, "malloc");
+ decode_type (n, t->subtype, 0, forwstr, sname);
fprintf (codefile,
- "len = origlen - ret;\n"
+ "len = %s_origlen - ret;\n"
"}\n"
- "ret += oldret;\n"
- "}\n");
+ "ret += %s_oldret;\n"
+ "}\n",
+ tmpstr, tmpstr);
free (n);
+ free (sname);
break;
}
case TGeneralizedTime:
@@ -418,17 +430,21 @@ decode_type (const char *name, const Type *t, int optional,
decode_primitive ("general_string", name, forwstr);
break;
case TTag:{
+ char *tname;
+
fprintf(codefile,
"{\n"
- "size_t tagdatalen, oldlen;\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, "
- "&tagdatalen, &l);\n",
+ "&%s_datalen, &l);\n",
classname(t->tag.tagclass),
is_primitive_type(t->subtype->type) ? "PRIM" : "CONS",
- valuename(t->tag.tagclass, t->tag.tagvalue));
+ valuename(t->tag.tagclass, t->tag.tagvalue),
+ tmpstr);
if(optional) {
fprintf(codefile,
"if(e) {\n"
@@ -442,32 +458,38 @@ decode_type (const char *name, const Type *t, int optional,
}
fprintf (codefile,
"p += l; len -= l; ret += l;\n"
- "oldlen = len;\n");
+ "%s_oldlen = len;\n",
+ tmpstr);
if(dce_fix)
fprintf (codefile,
- "if((dce_fix = _heim_fix_dce(tagdatalen, &len)) < 0)\n"
+ "if((dce_fix = _heim_fix_dce(%s_datalen, &len)) < 0)\n"
"{ e = ASN1_BAD_FORMAT; %s; }\n",
- forwstr);
+ tmpstr, forwstr);
else
fprintf(codefile,
- "if (tagdatalen > len) { e = ASN1_OVERRUN; %s; }\n"
- "len = tagdatalen;\n", forwstr);
- decode_type (name, t->subtype, 0, forwstr);
+ "if (%s_datalen > len) { e = ASN1_OVERRUN; %s; }\n"
+ "len = %s_datalen;\n", tmpstr, forwstr, tmpstr);
+ asprintf (&tname, "%s_Tag", tmpstr);
+ if (tname == NULL)
+ errx(1, "malloc");
+ decode_type (name, t->subtype, 0, forwstr, tname);
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"
+ "&%s_datalen, &l);\n"
"if(e) %s;\np += l; len -= l; ret += l;\n"
- "} else \n", forwstr);
+ "} else \n", tmpstr, forwstr);
fprintf(codefile,
- "len = oldlen - tagdatalen;\n");
+ "len = %s_oldlen - %s_datalen;\n",
+ tmpstr, tmpstr);
if(optional)
fprintf(codefile,
"}\n");
fprintf(codefile,
"}\n");
+ free(tname);
break;
}
case TChoice: {
@@ -501,7 +523,7 @@ decode_type (const char *name, const Type *t, int optional,
name, m->gen_name);
if (s == NULL)
errx(1, "malloc");
- decode_type (s, m->type, m->optional, forwstr);
+ decode_type (s, m->type, m->optional, forwstr, m->gen_name);
fprintf(codefile,
"(%s)->element = %s;\n",
name, m->label);
@@ -573,71 +595,73 @@ decode_type (const char *name, const Type *t, int optional,
void
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"
- "{\n",
- s->gen_name, s->gen_name);
-
- switch (s->type->type) {
- case TInteger:
- 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 TSet:
- case TSetOf:
- case TTag:
- case TType:
- case TChoice:
- fprintf (codefile,
- "size_t ret = 0, reallen;\n"
- "size_t l;\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, 0, "goto fail");
- if (preserve)
+ 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"
+ "{\n",
+ s->gen_name, s->gen_name);
+
+ switch (s->type->type) {
+ case TInteger:
+ 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 TSet:
+ case TSetOf:
+ case TTag:
+ case TType:
+ case TChoice:
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");
- fprintf (codefile,
- "fail:\n"
- "free_%s(data);\n"
- "return e;\n",
- s->gen_name);
- break;
- default:
- abort ();
- }
- fprintf (codefile, "}\n\n");
+ "size_t ret = 0, reallen;\n"
+ "size_t l;\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"); /* hack to avoid `unused variable' */
+ fprintf (codefile, "reallen = 0;\n");
+
+ decode_type ("data", s->type, 0, "goto fail", "Top");
+ if (preserve)
+ fprintf (codefile,
+ "data->_save.data = calloc(1, ret);\n"
+ "if (data->_save.data == NULL) { \n"
+ "e = ENOMEM; goto fail; \n"
+ "}\n"
+ "data->_save.length = ret;\n"
+ "memcpy(data->_save.data, begin, ret);\n");
+ fprintf (codefile,
+ "if(size) *size = ret;\n"
+ "return 0;\n");
+ fprintf (codefile,
+ "fail:\n"
+ "free_%s(data);\n"
+ "return e;\n",
+ s->gen_name);
+ break;
+ default:
+ abort ();
+ }
+ fprintf (codefile, "}\n\n");
}
generated by cgit (git 2.34.1) at 2024-06-28 09:38:45 +0000