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asn1c/libasn1print/asn1print.c

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#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <asn1parser.h>
#include <asn1fix_export.h>
#include <asn1fix_crange.h>
#include "asn1print.h"
#define INDENT(fmt, args...) do { \
if(!(flags & APF_NOINDENT)) { \
int __i = level; \
while(__i--) printf(" "); \
} \
printf(fmt, ##args); \
} while(0)
static int asn1print_module(asn1p_t *asn, asn1p_module_t *mod, enum asn1print_flags flags);
static int asn1print_oid(int prior_len, asn1p_oid_t *oid, enum asn1print_flags flags);
static int asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags flags);
static int asn1print_tag(asn1p_expr_t *tc, enum asn1print_flags flags);
static int asn1print_params(asn1p_paramlist_t *pl,enum asn1print_flags flags);
static int asn1print_with_syntax(asn1p_wsyntx_t *wx, enum asn1print_flags flags);
static int asn1print_constraint(asn1p_constraint_t *, enum asn1print_flags);
static int asn1print_value(asn1p_value_t *val, enum asn1print_flags flags);
static int asn1print_expr(asn1p_t *asn, asn1p_module_t *mod, asn1p_expr_t *tc, enum asn1print_flags flags, int level);
static int asn1print_expr_dtd(asn1p_t *asn, asn1p_module_t *mod, asn1p_expr_t *tc, enum asn1print_flags flags, int level);
/*
* Print the contents of the parsed ASN tree.
*/
int
asn1print(asn1p_t *asn, enum asn1print_flags flags) {
asn1p_module_t *mod;
int modno = 0;
if(asn == NULL) {
errno = EINVAL;
return -1;
}
if(flags & APF_PRINT_XML_DTD)
printf("<!-- XML DTD generated by asn1c-" VERSION " -->\n\n");
TQ_FOR(mod, &(asn->modules), mod_next) {
if(modno++) printf("\n");
asn1print_module(asn, mod, flags);
}
if(flags & APF_PRINT_XML_DTD) {
/* Values for BOOLEAN */
printf("<!ELEMENT true EMPTY>\n");
printf("<!ELEMENT false EMPTY>\n");
}
return 0;
}
static int
asn1print_module(asn1p_t *asn, asn1p_module_t *mod, enum asn1print_flags flags) {
asn1p_expr_t *tc;
if(flags & APF_PRINT_XML_DTD)
printf("<!-- ASN.1 module\n");
printf("%s ", mod->ModuleName);
if(mod->module_oid) {
asn1print_oid(strlen(mod->ModuleName), mod->module_oid, flags);
printf("\n");
}
if(flags & APF_PRINT_XML_DTD) {
if(mod->source_file_name
&& strcmp(mod->source_file_name, "-"))
printf("found in %s", mod->source_file_name);
printf(" -->\n\n");
TQ_FOR(tc, &(mod->members), next) {
asn1print_expr_dtd(asn, mod, tc, flags, 0);
}
return 0;
}
printf("DEFINITIONS");
if(mod->module_flags & MSF_TAG_INSTRUCTIONS)
printf(" TAG INSTRUCTIONS");
if(mod->module_flags & MSF_XER_INSTRUCTIONS)
printf(" XER INSTRUCTIONS");
if(mod->module_flags & MSF_EXPLICIT_TAGS)
printf(" EXPLICIT TAGS");
if(mod->module_flags & MSF_IMPLICIT_TAGS)
printf(" IMPLICIT TAGS");
if(mod->module_flags & MSF_AUTOMATIC_TAGS)
printf(" AUTOMATIC TAGS");
if(mod->module_flags & MSF_EXTENSIBILITY_IMPLIED)
printf(" EXTENSIBILITY IMPLIED");
printf(" ::=\n");
printf("BEGIN\n\n");
TQ_FOR(tc, &(mod->members), next) {
asn1print_expr(asn, mod, tc, flags, 0);
if(flags & APF_DEBUG_CONSTRAINTS)
printf("\n");
else
printf("\n\n");
}
printf("END\n");
return 0;
}
static int
asn1print_oid(int prior_len, asn1p_oid_t *oid, enum asn1print_flags flags) {
size_t accum = prior_len;
int ac;
(void)flags; /* Unused argument */
printf("{");
for(ac = 0; ac < oid->arcs_count; ac++) {
const char *arcname = oid->arcs[ac].name;
if(accum + strlen(arcname ? arcname : "") > 72) {
printf("\n\t");
accum = 8;
} else {
accum += printf(" ");
}
if(arcname) {
accum += printf("%s", arcname);
if(oid->arcs[ac].number >= 0) {
accum += printf("(%" PRIdASN ")",
oid->arcs[ac].number);
}
} else {
accum += printf("%" PRIdASN, oid->arcs[ac].number);
}
}
printf(" }");
return 0;
}
static int
asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags flags) {
int cc;
(void)flags; /* Unused argument */
for(cc = 0; cc < ref->comp_count; cc++) {
if(cc) printf(".");
printf("%s", ref->components[cc].name);
}
return 0;
}
static int
asn1print_tag(asn1p_expr_t *tc, enum asn1print_flags flags) {
struct asn1p_type_tag_s *tag = &tc->tag;
(void)flags; /* Unused argument */
printf("%s", asn1p_tag2string(tag, 0));
return 0;
}
static int
asn1print_value(asn1p_value_t *val, enum asn1print_flags flags) {
if(val == NULL)
return 0;
switch(val->type) {
case ATV_NOVALUE:
break;
case ATV_NULL:
printf("NULL");
return 0;
case ATV_REAL:
printf("%f", val->value.v_double);
return 0;
case ATV_INTEGER:
printf("%" PRIdASN, val->value.v_integer);
return 0;
case ATV_MIN: printf("MIN"); return 0;
case ATV_MAX: printf("MAX"); return 0;
case ATV_FALSE: printf("FALSE"); return 0;
case ATV_TRUE: printf("TRUE"); return 0;
case ATV_TUPLE:
printf("{%d, %d}",
(int)(val->value.v_integer >> 4),
(int)(val->value.v_integer & 0x0f));
return 0;
case ATV_QUADRUPLE:
printf("{%d, %d, %d, %d}",
(int)((val->value.v_integer >> 24) & 0xff),
(int)((val->value.v_integer >> 16) & 0xff),
(int)((val->value.v_integer >> 8) & 0xff),
(int)((val->value.v_integer >> 0) & 0xff)
);
return 0;
case ATV_STRING:
{
char *p = (char *)val->value.string.buf;
putchar('"');
if(strchr(p, '"')) {
/* Mask quotes */
for(; *p; p++) {
if(*p == '"')
putchar(*p);
putchar(*p);
}
} else {
fputs(p, stdout);
}
putchar('"');
}
return 0;
case ATV_UNPARSED:
fputs((char *)val->value.string.buf, stdout);
return 0;
case ATV_BITVECTOR:
{
uint8_t *bitvector;
int bits;
int i;
bitvector = val->value.binary_vector.bits;
bits = val->value.binary_vector.size_in_bits;
printf("'");
if(bits%8) {
for(i = 0; i < bits; i++) {
uint8_t uc;
uc = bitvector[i>>3];
putchar(((uc >> (7-(i%8)))&1)?'1':'0');
}
printf("'B");
} else {
char hextable[16] = "0123456789ABCDEF";
for(i = 0; i < (bits>>3); i++) {
putchar(hextable[bitvector[i] >> 4]);
putchar(hextable[bitvector[i] & 0x0f]);
}
printf("'H");
}
return 0;
}
case ATV_REFERENCED:
return asn1print_ref(val->value.reference, flags);
case ATV_CHOICE_IDENTIFIER:
printf("%s: ", val->value.choice_identifier.identifier);
return asn1print_value(val->value.choice_identifier.value, flags);
}
assert(val->type || !"Unknown");
return 0;
}
static int
asn1print_constraint(asn1p_constraint_t *ct, enum asn1print_flags flags) {
int symno = 0;
if(ct == 0) return 0;
if(ct->type == ACT_CA_SET)
printf("(");
switch(ct->type) {
case ACT_EL_TYPE:
asn1print_value(ct->value, flags);
break;
case ACT_EL_VALUE:
asn1print_value(ct->value, flags);
break;
case ACT_EL_RANGE:
case ACT_EL_LLRANGE:
case ACT_EL_RLRANGE:
case ACT_EL_ULRANGE:
asn1print_value(ct->range_start, flags);
switch(ct->type) {
case ACT_EL_RANGE: printf(".."); break;
case ACT_EL_LLRANGE: printf("<.."); break;
case ACT_EL_RLRANGE: printf("..<"); break;
case ACT_EL_ULRANGE: printf("<..<"); break;
default: printf("?..?"); break;
}
asn1print_value(ct->range_stop, flags);
break;
case ACT_EL_EXT:
printf("...");
break;
case ACT_CT_SIZE:
case ACT_CT_FROM:
switch(ct->type) {
case ACT_CT_SIZE: printf("SIZE("); break;
case ACT_CT_FROM: printf("FROM("); break;
default: printf("??? ("); break;
}
assert(ct->el_count != 0);
assert(ct->el_count == 1);
asn1print_constraint(ct->elements[0], flags);
printf(")");
break;
case ACT_CT_WCOMP:
assert(ct->el_count != 0);
assert(ct->el_count == 1);
printf("WITH COMPONENT (");
asn1print_constraint(ct->elements[0], flags);
printf(")");
break;
case ACT_CT_WCOMPS: {
unsigned int i;
printf("WITH COMPONENTS { ");
for(i = 0; i < ct->el_count; i++) {
asn1p_constraint_t *cel = ct->elements[i];
if(i) printf(", ");
fwrite(cel->value->value.string.buf,
1, cel->value->value.string.size,
stdout);
if(cel->el_count) {
assert(cel->el_count == 1);
printf(" ");
asn1print_constraint(cel->elements[0],
flags);
}
switch(cel->presence) {
case ACPRES_DEFAULT: break;
case ACPRES_PRESENT: printf(" PRESENT"); break;
case ACPRES_ABSENT: printf(" ABSENT"); break;
case ACPRES_OPTIONAL: printf(" OPTIONAL");break;
}
}
printf(" }");
}
break;
case ACT_CT_CTDBY:
printf("CONSTRAINED BY ");
assert(ct->value->type == ATV_UNPARSED);
fwrite(ct->value->value.string.buf,
1, ct->value->value.string.size, stdout);
break;
case ACT_CA_SET: symno++;
case ACT_CA_CRC: symno++;
case ACT_CA_CSV: symno++;
case ACT_CA_UNI: symno++;
case ACT_CA_INT: symno++;
case ACT_CA_EXC:
{
char *symtable[] = { " EXCEPT ", " ^ ", " | ", ",",
"", "(" };
unsigned int i;
for(i = 0; i < ct->el_count; i++) {
if(i) fputs(symtable[symno], stdout);
if(ct->type == ACT_CA_CRC) fputs("{", stdout);
asn1print_constraint(ct->elements[i], flags);
if(ct->type == ACT_CA_CRC) fputs("}", stdout);
if(i+1 < ct->el_count
&& ct->type == ACT_CA_SET)
fputs(")", stdout);
}
}
break;
case ACT_CA_AEX:
assert(ct->el_count == 1);
printf("ALL EXCEPT ");
asn1print_constraint(ct->elements[0], flags);
break;
case ACT_INVALID:
assert(ct->type != ACT_INVALID);
break;
}
if(ct->type == ACT_CA_SET)
printf(")");
return 0;
}
static int
asn1print_params(asn1p_paramlist_t *pl, enum asn1print_flags flags) {
if(pl) {
int i;
printf("{");
for(i = 0; i < pl->params_count; i++) {
if(i) printf(", ");
if(pl->params[i].governor) {
asn1print_ref(pl->params[i].governor, flags);
printf(":");
}
printf("%s", pl->params[i].argument);
}
printf("}");
}
return 0;
}
static int
asn1print_with_syntax(asn1p_wsyntx_t *wx, enum asn1print_flags flags) {
if(wx) {
asn1p_wsyntx_chunk_t *wc;
printf(" WITH SYNTAX {");
TQ_FOR(wc, &(wx->chunks), next) {
if(wc->ref) {
asn1print_ref(wc->ref, flags);
} else {
fwrite(wc->buf, 1, wc->len, stdout);
}
}
printf("}\n");
}
return 0;
}
static int
asn1print_crange_value(asn1cnst_edge_t *edge, int as_char) {
switch(edge->type) {
case ARE_MIN: printf("MIN"); break;
case ARE_MAX: printf("MAX"); break;
case ARE_VALUE:
if(as_char) {
printf("\"%c\"", (unsigned char)edge->value);
} else {
printf("%" PRIdASN, edge->value);
}
}
return 0;
}
static int
asn1print_constraint_explain_type(asn1p_expr_type_e expr_type, asn1p_constraint_t *ct, enum asn1p_constraint_type_e type, int strict_PER_visible) {
asn1cnst_range_t *range;
int as_char = (type==ACT_CT_FROM);
int i;
range = asn1constraint_compute_PER_range(expr_type, ct, type, 0, 0,
strict_PER_visible ? CPR_strict_PER_visibility : 0);
if(!range) return -1;
if(range->incompatible
|| (strict_PER_visible && range->not_PER_visible)) {
asn1constraint_range_free(range);
return 0;
}
switch(type) {
case ACT_CT_FROM: printf("(FROM("); break;
case ACT_CT_SIZE: printf("(SIZE("); break;
default: printf("("); break;
}
for(i = -1; i < range->el_count; i++) {
asn1cnst_range_t *r;
if(i == -1) {
if(range->el_count) continue;
r = range;
} else {
r = range->elements[i];
}
if(i > 0) {
printf(" | ");
}
asn1print_crange_value(&r->left, as_char);
if(r->left.type != r->right.type
|| r->left.value != r->right.value) {
printf("..");
asn1print_crange_value(&r->right, as_char);
}
}
if(range->extensible)
printf(",...");
printf(type==ACT_EL_RANGE?")":"))");
if(range->empty_constraint)
printf(":Empty!");
asn1constraint_range_free(range);
return 0;
}
static int
asn1print_constraint_explain(asn1p_expr_type_e expr_type,
asn1p_constraint_t *ct, int s_PV) {
asn1print_constraint_explain_type(expr_type, ct, ACT_EL_RANGE, s_PV);
printf(" ");
asn1print_constraint_explain_type(expr_type, ct, ACT_CT_SIZE, s_PV);
printf(" ");
asn1print_constraint_explain_type(expr_type, ct, ACT_CT_FROM, s_PV);
return 0;
}
static int
asn1print_expr(asn1p_t *asn, asn1p_module_t *mod, asn1p_expr_t *tc, enum asn1print_flags flags, int level) {
int SEQ_OF = 0;
if(flags & APF_LINE_COMMENTS && !(flags & APF_NOINDENT))
INDENT("-- #line %d\n", tc->_lineno);
/* Reconstruct compiler directive information */
if((tc->marker.flags & EM_INDIRECT)
&& (tc->marker.flags & EM_OMITABLE) != EM_OMITABLE) {
if((flags & APF_NOINDENT))
printf(" --<ASN1C.RepresentAsPointer>-- ");
else
INDENT("--<ASN1C.RepresentAsPointer>--\n");
}
if(tc->Identifier)
INDENT("%s", tc->Identifier);
if(tc->params) {
asn1print_params(tc->params, flags);
}
if(tc->meta_type != AMT_VALUE
&& tc->meta_type != AMT_VALUESET
&& tc->expr_type != A1TC_EXTENSIBLE) {
if(level) {
if(tc->Identifier && !(flags & APF_NOINDENT))
printf("\t");
} else {
printf(" ::=");
}
}
if(tc->tag.tag_class) {
printf(" ");
asn1print_tag(tc, flags);
}
switch(tc->expr_type) {
case A1TC_EXTENSIBLE:
if(tc->value) {
printf("!");
asn1print_value(tc->value, flags);
}
break;
case A1TC_COMPONENTS_OF:
SEQ_OF = 1; /* Equivalent to SET OF for printint purposes */
printf(" COMPONENTS OF");
break;
case A1TC_PARAMETRIZED:
flags |= APF_NOINDENT;
case A1TC_REFERENCE:
case A1TC_UNIVERVAL:
break;
case A1TC_CLASSDEF:
printf(" CLASS");
break;
case A1TC_CLASSFIELD:
/* Nothing to print here */
break;
case ASN_CONSTR_SET_OF:
case ASN_CONSTR_SEQUENCE_OF:
SEQ_OF = 1;
if(tc->expr_type == ASN_CONSTR_SET_OF)
printf(" SET");
else
printf(" SEQUENCE");
if(tc->constraints) {
printf(" ");
asn1print_constraint(tc->constraints, flags);
}
printf(" OF");
break;
default:
{
char *p = ASN_EXPR_TYPE2STR(tc->expr_type);
printf(" %s", p?p:"<unknown type!>");
}
break;
}
/*
* Put the name of the referred type.
*/
if(tc->reference) {
printf(" ");
asn1print_ref(tc->reference, flags);
}
if(tc->meta_type == AMT_VALUESET)
printf(" ::=");
/*
* Display the descendants (children) of the current type.
*/
if(TQ_FIRST(&(tc->members))
|| (tc->expr_type & ASN_CONSTR_MASK)
|| tc->meta_type == AMT_VALUESET
|| tc->meta_type == AMT_OBJECT
|| tc->meta_type == AMT_OBJECTSET
) {
asn1p_expr_t *se; /* SubExpression */
int put_braces = !SEQ_OF; /* Don't need 'em, if SET OF... */
if(put_braces) {
if(flags & APF_NOINDENT) {
printf("{");
if(!TQ_FIRST(&tc->members))
printf("}");
} else {
printf(" {");
if(TQ_FIRST(&tc->members))
printf("\n");
else
printf(" }");
}
}
TQ_FOR(se, &(tc->members), next) {
/*
* Print the expression as it were a stand-alone type.
*/
asn1print_expr(asn, mod, se, flags, level + 1);
if((se->marker.flags & EM_DEFAULT) == EM_DEFAULT) {
printf(" DEFAULT ");
asn1print_value(se->marker.default_value, flags);
} else if((se->marker.flags & EM_OPTIONAL)
== EM_OPTIONAL) {
printf(" OPTIONAL");
}
if(TQ_NEXT(se, next)) {
printf(",");
if(!(flags & APF_NOINDENT))
INDENT("\n");
}
}
if(put_braces && TQ_FIRST(&tc->members)) {
if(!(flags & APF_NOINDENT))
printf("\n");
INDENT("}");
}
}
if(tc->with_syntax)
asn1print_with_syntax(tc->with_syntax, flags);
if(!SEQ_OF && tc->constraints) {
printf(" ");
asn1print_constraint(tc->constraints, flags);
}
if(tc->unique) {
printf(" UNIQUE");
}
if(tc->meta_type == AMT_VALUE
&& tc->expr_type != A1TC_EXTENSIBLE) {
if(tc->expr_type == A1TC_UNIVERVAL) {
if(tc->value) {
printf("(");
asn1print_value(tc->value, flags);
printf(")");
}
} else {
printf(" ::= ");
asn1print_value(tc->value, flags);
}
}
/*
* The following section exists entirely for debugging.
*/
if(flags & APF_DEBUG_CONSTRAINTS
&& tc->expr_type != A1TC_EXTENSIBLE) {
asn1p_expr_t *top_parent;
if(tc->combined_constraints) {
printf("\n-- Combined constraints: ");
asn1print_constraint(tc->combined_constraints, flags);
}
top_parent = asn1f_find_terminal_type_ex(asn, tc);
if(top_parent) {
printf("\n-- Practical constraints (%s): ",
top_parent->Identifier);
asn1print_constraint_explain(top_parent->expr_type,
tc->combined_constraints, 0);
printf("\n-- PER-visible constraints (%s): ",
top_parent->Identifier);
asn1print_constraint_explain(top_parent->expr_type,
tc->combined_constraints, 1);
}
printf("\n");
}
return 0;
}
static int
asn1print_expr_dtd(asn1p_t *asn, asn1p_module_t *mod, asn1p_expr_t *expr, enum asn1print_flags flags, int level) {
asn1p_expr_t *se;
int expr_unordered = 0;
int dont_involve_children = 0;
switch(expr->meta_type) {
case AMT_TYPE:
case AMT_TYPEREF:
break;
default:
if(expr->expr_type == A1TC_UNIVERVAL)
break;
return 0;
}
if(!expr->Identifier) return 0;
if(flags & APF_LINE_COMMENTS)
INDENT("<!-- #line %d -->\n", expr->_lineno);
INDENT("<!ELEMENT %s", expr->Identifier);
if(expr->expr_type == A1TC_REFERENCE) {
se = asn1f_find_terminal_type_ex(asn, expr);
if(!se) {
printf(" (ANY)");
return 0;
}
expr = se;
dont_involve_children = 1;
}
if(expr->expr_type == ASN_CONSTR_CHOICE
|| expr->expr_type == ASN_CONSTR_SEQUENCE_OF
|| expr->expr_type == ASN_CONSTR_SET_OF
|| expr->expr_type == ASN_CONSTR_SET
|| expr->expr_type == ASN_BASIC_INTEGER
|| expr->expr_type == ASN_BASIC_ENUMERATED) {
expr_unordered = 1;
}
if(TQ_FIRST(&expr->members)) {
int extensible = 0;
printf(" (");
TQ_FOR(se, &(expr->members), next) {
if(se->expr_type == A1TC_EXTENSIBLE) {
extensible = 1;
continue;
} else if(!se->Identifier
&& se->expr_type == A1TC_REFERENCE) {
asn1print_ref(se->reference, flags);
} else if(se->Identifier) {
printf("%s", se->Identifier);
} else {
printf("ANY");
}
if(expr->expr_type != ASN_CONSTR_SET
&& expr->expr_type != ASN_CONSTR_CHOICE
&& expr->expr_type != ASN_BASIC_INTEGER
&& expr->expr_type != ASN_BASIC_ENUMERATED) {
if(expr_unordered)
printf("*");
else if(se->marker.flags)
printf("?");
}
if(TQ_NEXT(se, next)
&& TQ_NEXT(se, next)->expr_type != A1TC_EXTENSIBLE) {
printf(expr_unordered?"|":", ");
}
}
if(extensible) {
printf(expr_unordered?"|":", ");
printf("ANY");
if(expr->expr_type != ASN_CONSTR_SET
&& expr->expr_type != ASN_CONSTR_CHOICE
&& expr->expr_type != ASN_BASIC_INTEGER
&& expr->expr_type != ASN_BASIC_ENUMERATED)
printf("*");
}
printf(")");
if(expr->expr_type == ASN_CONSTR_SET)
printf("*");
} else switch(expr->expr_type) {
case ASN_BASIC_BOOLEAN:
printf(" (true|false)");
break;
case ASN_CONSTR_CHOICE:
case ASN_CONSTR_SET:
case ASN_CONSTR_SET_OF:
case ASN_CONSTR_SEQUENCE:
case ASN_CONSTR_SEQUENCE_OF:
case ASN_BASIC_NULL:
case A1TC_UNIVERVAL:
printf(" EMPTY");
break;
case ASN_TYPE_ANY:
printf(" ANY");
break;
case ASN_BASIC_BIT_STRING:
case ASN_BASIC_OCTET_STRING:
case ASN_BASIC_OBJECT_IDENTIFIER:
case ASN_BASIC_RELATIVE_OID:
case ASN_BASIC_INTEGER:
case ASN_BASIC_UTCTime:
case ASN_BASIC_GeneralizedTime:
case ASN_STRING_NumericString:
case ASN_STRING_PrintableString:
printf(" (#PCDATA)");
break;
case ASN_STRING_VisibleString:
case ASN_STRING_ISO646String:
/* Entity references, but not XML elements may be present */
printf(" (#PCDATA)");
break;
case ASN_BASIC_REAL: /* e.g. <MINUS-INFINITY/> */
case ASN_BASIC_ENUMERATED: /* e.g. <enumIdentifier1/> */
default:
/*
* XML elements are allowed.
* For example, a UTF8String may contain "<bel/>".
*/
printf(" ANY");
}
printf(">\n");
/*
* Display the descendants (children) of the current type.
*/
if(!dont_involve_children) {
TQ_FOR(se, &(expr->members), next) {
if(se->expr_type == A1TC_EXTENSIBLE) continue;
asn1print_expr_dtd(asn, mod, se, flags, level + 1);
}
}
return 0;
}
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