mirror of https://gerrit.osmocom.org/asn1c
463 lines
9.8 KiB
C
463 lines
9.8 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#include <asn1parser.h>
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#include "asn1print.h"
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#define INDENT(fmt, args...) do { \
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int __i = level; while(__i--) putchar(' '); \
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printf(fmt, ##args); \
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} while(0)
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static int asn1print_module(asn1p_module_t *mod, enum asn1print_flags_e flags);
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static int asn1print_oid(asn1p_oid_t *oid, enum asn1print_flags_e flags);
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static int asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags_e flags);
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static int asn1print_tag(asn1p_expr_t *tc, enum asn1print_flags_e flags);
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static int asn1print_params(asn1p_paramlist_t *pl,enum asn1print_flags_e flags);
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static int asn1print_with_syntax(asn1p_wsyntx_t *wx, enum asn1print_flags_e flags);
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static int asn1print_constraint(asn1p_constraint_t *, enum asn1print_flags_e);
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static int asn1print_value(asn1p_value_t *val, enum asn1print_flags_e flags);
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static int asn1print_expr(asn1p_expr_t *tc, enum asn1print_flags_e flags,
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int level);
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/*
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* Print the contents of the parsed ASN tree.
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*/
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int
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asn1print(asn1p_t *asn, enum asn1print_flags_e flags) {
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asn1p_module_t *mod;
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if(asn == NULL) {
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errno = EINVAL;
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return -1;
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}
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TQ_FOR(mod, &(asn->modules), mod_next) {
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asn1print_module(mod, flags);
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}
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return 0;
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}
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static int
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asn1print_module(asn1p_module_t *mod, enum asn1print_flags_e flags) {
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asn1p_expr_t *tc;
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if(!(flags & APF_NO_SOURCE_COMMENTS))
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printf("\n-- Contents of \"%s\"\n", mod->source_file_name);
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printf("\n%s ", mod->Identifier);
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if(mod->module_oid) {
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asn1print_oid(mod->module_oid, flags);
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printf("\n");
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}
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printf("DEFINITIONS");
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if(mod->module_flags & MSF_EXPLICIT_TAGS)
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printf(" EXPLICIT TAGS");
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if(mod->module_flags & MSF_IMPLICIT_TAGS)
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printf(" IMPLICIT TAGS");
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if(mod->module_flags & MSF_AUTOMATIC_TAGS)
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printf(" AUTOMATIC TAGS");
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if(mod->module_flags & MSF_EXTENSIBILITY_IMPLIED)
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printf(" EXTENSIBILITY IMPLIED");
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printf(" ::=\n");
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printf("BEGIN\n\n");
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TQ_FOR(tc, &(mod->members), next) {
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asn1print_expr(tc, flags, 0);
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printf("\n\n");
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}
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printf("END\n");
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return 0;
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}
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static int
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asn1print_oid(asn1p_oid_t *oid, enum asn1print_flags_e flags) {
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int ac;
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int accum = 0;
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(void)flags; /* Unused argument */
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printf("{");
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for(ac = 0; ac < oid->arcs_count; ac++) {
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if(accum + strlen(oid->arcs[ac].name?:"") > 50) {
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printf("\n\t");
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accum = 0;
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} else if(ac) printf(" ");
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if(oid->arcs[ac].name) {
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printf("%s(%d)",
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oid->arcs[ac].name,
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(int)oid->arcs[ac].number);
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accum += strlen(oid->arcs[ac].name);
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} else {
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printf("%d",
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(int)oid->arcs[ac].number);
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}
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accum += 4;
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}
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printf(" }");
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return 0;
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}
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static int
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asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags_e flags) {
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int cc;
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(void)flags; /* Unused argument */
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for(cc = 0; cc < ref->comp_count; cc++) {
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if(cc) printf(".");
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printf("%s", ref->components[cc].name);
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}
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return 0;
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}
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static int
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asn1print_tag(asn1p_expr_t *tc, enum asn1print_flags_e flags) {
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struct asn1p_type_tag_s *tag = &tc->tag;
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(void)flags; /* Unused argument */
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if(tag->tag_class == TC_NOCLASS)
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return 0;
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printf("[");
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switch(tag->tag_class) {
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case TC_NOCLASS:
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assert(tag->tag_class != TC_NOCLASS);
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break;
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case TC_UNIVERSAL: printf("UNIVERSAL "); break;
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case TC_PRIVATE: printf("PRIVATE "); break;
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case TC_APPLICATION: printf("APPLICATION "); break;
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case TC_CONTEXT_SPECIFIC:
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break;
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}
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printf("%lld]", (long long)tag->tag_value);
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switch(tag->tag_mode) {
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case TM_DEFAULT: break;
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case TM_IMPLICIT: printf(" IMPLICIT"); break;
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case TM_EXPLICIT: printf(" EXPLICIT"); break;
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}
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return 0;
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}
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static int
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asn1print_value(asn1p_value_t *val, enum asn1print_flags_e flags) {
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if(val == NULL)
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return 0;
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switch(val->type) {
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case ATV_NOVALUE:
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break;
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case ATV_REFERENCED:
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return asn1print_ref(val->value.reference, flags);
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case ATV_INTEGER:
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printf("%lld", (long long)val->value.v_integer);
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return 0;
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case ATV_MIN: printf("MIN"); return 0;
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case ATV_MAX: printf("MAX"); return 0;
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case ATV_FALSE: printf("FALSE"); return 0;
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case ATV_TRUE: printf("TRUE"); return 0;
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case ATV_REAL:
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printf("%f", val->value.v_double);
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return 0;
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case ATV_STRING:
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{
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char *p = val->value.string.buf;
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putchar('"');
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if(strchr(p, '"')) {
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/* Mask quotes */
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for(; *p; p++) {
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if(*p == '"')
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putchar(*p);
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putchar(*p);
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}
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} else {
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fputs(p, stdout);
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}
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putchar('"');
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}
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return 0;
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case ATV_UNPARSED:
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fputs(val->value.string.buf, stdout);
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return 0;
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case ATV_BITVECTOR:
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{
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uint8_t *bitvector;
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int bits;
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int i;
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bitvector = val->value.binary_vector.bits;
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bits = val->value.binary_vector.size_in_bits;
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printf("'");
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if(bits%8) {
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for(i = 0; i < bits; i++) {
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uint8_t uc;
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uc = bitvector[i>>3];
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putchar(((uc >> (7-(i%8)))&1)?'1':'0');
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}
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printf("'B");
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} else {
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char hextable[16] = "0123456789ABCDEF";
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for(i = 0; i < (bits>>3); i++) {
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putchar(hextable[bitvector[i] >> 4]);
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putchar(hextable[bitvector[i] & 0x0f]);
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}
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printf("'H");
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}
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}
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}
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assert(val->type || !"Unknown");
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return 0;
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}
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static int
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asn1print_constraint(asn1p_constraint_t *ct, enum asn1print_flags_e flags) {
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int symno = 0;
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if(ct == 0) return 0;
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if(ct->type == ACT_CA_SET)
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printf("(");
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switch(ct->type) {
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case ACT_EL_VALUE:
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asn1print_value(ct->value, flags);
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break;
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case ACT_EL_RANGE:
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case ACT_EL_LLRANGE:
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case ACT_EL_RLRANGE:
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case ACT_EL_ULRANGE:
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asn1print_value(ct->range_start, flags);
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switch(ct->type) {
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case ACT_EL_RANGE: printf(".."); break;
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case ACT_EL_LLRANGE: printf("<.."); break;
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case ACT_EL_RLRANGE: printf("..<"); break;
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case ACT_EL_ULRANGE: printf("<..<"); break;
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default: printf("?..?"); break;
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}
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asn1print_value(ct->range_stop, flags);
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break;
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case ACT_EL_EXT:
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printf("...");
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break;
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case ACT_CT_SIZE:
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case ACT_CT_FROM:
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switch(ct->type) {
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case ACT_CT_SIZE: printf("SIZE ("); break;
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case ACT_CT_FROM: printf("FROM ("); break;
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default: printf("??? ("); break;
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}
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assert(ct->el_count != 0);
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assert(ct->el_count == 1);
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asn1print_constraint(ct->elements[0], flags);
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printf(")");
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break;
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case ACT_CT_WCOMP:
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case ACT_CT_WCOMPS:
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printf("???");
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break;
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case ACT_CA_SET: symno++;
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case ACT_CA_CRC: symno++;
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case ACT_CA_CSV: symno++;
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case ACT_CA_UNI: symno++;
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case ACT_CA_INT: symno++;
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case ACT_CA_EXC:
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{
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char *symtable[] = { " EXCEPT ", "^", "|", ",",
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"", "(" };
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int i;
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for(i = 0; i < ct->el_count; i++) {
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enum asn1print_flags_e nflags = flags;
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if(i) fputs(symtable[symno], stdout);
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if(ct->type == ACT_CA_CRC) fputs("{", stdout);
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asn1print_constraint(ct->elements[i], nflags);
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if(ct->type == ACT_CA_CRC) fputs("}", stdout);
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if(i+1 < ct->el_count
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&& ct->type == ACT_CA_SET)
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fputs(")", stdout);
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}
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}
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break;
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case ACT_INVALID:
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assert(ct->type != ACT_INVALID);
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break;
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}
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if(ct->type == ACT_CA_SET)
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printf(")");
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return 0;
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}
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static int
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asn1print_params(asn1p_paramlist_t *pl, enum asn1print_flags_e flags) {
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if(pl) {
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int i;
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printf("{");
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for(i = 0; i < pl->params_count; i++) {
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if(i) printf(", ");
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if(pl->params[i].governor) {
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asn1print_ref(pl->params[i].governor, flags);
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printf(":");
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}
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printf("%s", pl->params[i].argument);
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}
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printf("}");
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}
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return 0;
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}
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static int
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asn1print_with_syntax(asn1p_wsyntx_t *wx, enum asn1print_flags_e flags) {
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if(wx) {
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asn1p_wsyntx_chunk_t *wc;
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printf(" WITH SYNTAX {");
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TQ_FOR(wc, &(wx->chunks), next) {
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if(wc->ref) {
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asn1print_ref(wc->ref, flags);
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} else {
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fwrite(wc->buf, 1, wc->len, stdout);
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}
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}
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printf("}\n");
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}
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return 0;
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}
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static int
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asn1print_expr(asn1p_expr_t *tc, enum asn1print_flags_e flags, int level) {
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if(flags & APF_LINE_COMMENTS)
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INDENT("-- #line %d\n", tc->_lineno);
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if(tc->Identifier)
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INDENT("%s", tc->Identifier);
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if(tc->params) {
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asn1print_params(tc->params, flags);
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}
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if(tc->meta_type != AMT_VALUE
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&& tc->expr_type != A1TC_EXTENSIBLE) {
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if(level) {
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if(tc->Identifier)
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printf("\t");
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} else {
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printf(" ::=");
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}
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}
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if(tc->tag.tag_class) {
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printf(" ");
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asn1print_tag(tc, flags);
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}
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switch(tc->expr_type) {
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case A1TC_EXTENSIBLE:
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if(tc->value) {
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printf("!");
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asn1print_value(tc->value, flags);
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}
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break;
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case A1TC_REFERENCE:
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case A1TC_UNIVERVAL:
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case A1TC_PARAMETRIZED:
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break;
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case A1TC_CLASSDEF:
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printf(" CLASS");
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break;
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case A1TC_CLASSFIELD:
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/* Nothing to print here */
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break;
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default:
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{
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char *p = ASN_EXPR_TYPE2STR(tc->expr_type);
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printf(" %s", p?p:"<unknown type!>");
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}
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break;
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}
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if(tc->reference) {
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printf(" ");
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asn1print_ref(tc->reference, flags);
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}
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/*
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* Display the descendants (children) of the current type.
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*/
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if(TQ_FIRST(&(tc->members))) {
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asn1p_expr_t *se; /* SubExpression */
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if((tc->expr_type != ASN_CONSTR_SEQUENCE_OF
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&& tc->expr_type != ASN_CONSTR_SET_OF)
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|| TQ_FIRST(&(tc->members))->expr_type & ASN_CONSTR_MASK)
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printf(" {\n");
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TQ_FOR(se, &(tc->members), next) {
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/*
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* Print the expression as it were stand-alone type.
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*/
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asn1print_expr(se, flags, level + 4);
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switch(se->marker) {
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case EM_NOMARK: break;
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case EM_OPTIONAL: printf(" OPTIONAL"); break;
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case EM_DEFAULT: printf(" DEFAULT <?>"); break;
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}
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if(TQ_NEXT(se, next)) {
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printf(",");
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INDENT("\n");
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}
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}
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if((tc->expr_type != ASN_CONSTR_SEQUENCE_OF
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&& tc->expr_type != ASN_CONSTR_SET_OF)
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|| TQ_FIRST(&(tc->members))->expr_type & ASN_CONSTR_MASK) {
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printf("\n");
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INDENT("}");
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}
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}
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if(tc->with_syntax)
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asn1print_with_syntax(tc->with_syntax, flags);
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if(tc->constraints) {
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printf(" ");
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asn1print_constraint(tc->constraints, flags);
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}
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if(tc->unique) {
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printf(" UNIQUE");
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}
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if(tc->meta_type == AMT_VALUE
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&& tc->expr_type != A1TC_EXTENSIBLE) {
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if(tc->expr_type == A1TC_UNIVERVAL)
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printf("(");
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else
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printf(" ::= ");
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asn1print_value(tc->value, flags);
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if(tc->expr_type == A1TC_UNIVERVAL)
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printf(")");
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}
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return 0;
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}
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