| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <assert.h> |
| |
| #include <asn1parser.h> |
| |
| #include "asn1print.h" |
| |
| #define INDENT(fmt, args...) do { \ |
| int __i = level; while(__i--) putchar(' '); \ |
| printf(fmt, ##args); \ |
| } while(0) |
| |
| static int asn1print_module(asn1p_module_t *mod, enum asn1print_flags_e flags); |
| static int asn1print_oid(asn1p_oid_t *oid, enum asn1print_flags_e flags); |
| static int asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags_e flags); |
| static int asn1print_tag(asn1p_expr_t *tc, enum asn1print_flags_e flags); |
| static int asn1print_params(asn1p_paramlist_t *pl,enum asn1print_flags_e flags); |
| static int asn1print_with_syntax(asn1p_wsyntx_t *wx, enum asn1print_flags_e flags); |
| static int asn1print_constraint(asn1p_constraint_t *, enum asn1print_flags_e); |
| static int asn1print_value(asn1p_value_t *val, enum asn1print_flags_e flags); |
| static int asn1print_expr(asn1p_expr_t *tc, enum asn1print_flags_e flags, |
| int level); |
| |
| /* |
| * Print the contents of the parsed ASN tree. |
| */ |
| int |
| asn1print(asn1p_t *asn, enum asn1print_flags_e flags) { |
| asn1p_module_t *mod; |
| |
| if(asn == NULL) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| TQ_FOR(mod, &(asn->modules), mod_next) { |
| asn1print_module(mod, flags); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| asn1print_module(asn1p_module_t *mod, enum asn1print_flags_e flags) { |
| asn1p_expr_t *tc; |
| |
| printf("\n%s ", mod->Identifier); |
| if(mod->module_oid) { |
| asn1print_oid(mod->module_oid, flags); |
| printf("\n"); |
| } |
| |
| printf("DEFINITIONS"); |
| |
| 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(tc, flags, 0); |
| printf("\n\n"); |
| } |
| |
| printf("END\n"); |
| |
| return 0; |
| } |
| |
| static int |
| asn1print_oid(asn1p_oid_t *oid, enum asn1print_flags_e flags) { |
| int ac; |
| int accum = 0; |
| |
| (void)flags; /* Unused argument */ |
| |
| printf("{"); |
| for(ac = 0; ac < oid->arcs_count; ac++) { |
| if(accum + strlen(oid->arcs[ac].name?:"") > 50) { |
| printf("\n\t"); |
| accum = 0; |
| } else if(ac) printf(" "); |
| |
| if(oid->arcs[ac].name) { |
| printf("%s(%d)", |
| oid->arcs[ac].name, |
| (int)oid->arcs[ac].number); |
| accum += strlen(oid->arcs[ac].name); |
| } else { |
| printf("%d", |
| (int)oid->arcs[ac].number); |
| } |
| accum += 4; |
| } |
| printf(" }"); |
| |
| return 0; |
| } |
| |
| static int |
| asn1print_ref(asn1p_ref_t *ref, enum asn1print_flags_e 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_e flags) { |
| struct asn1p_type_tag_s *tag = &tc->tag; |
| |
| (void)flags; /* Unused argument */ |
| |
| if(tag->tag_class == TC_NOCLASS) |
| return 0; |
| |
| printf("["); |
| switch(tag->tag_class) { |
| case TC_NOCLASS: |
| assert(tag->tag_class != TC_NOCLASS); |
| break; |
| case TC_UNIVERSAL: printf("UNIVERSAL "); break; |
| case TC_PRIVATE: printf("PRIVATE "); break; |
| case TC_APPLICATION: printf("APPLICATION "); break; |
| case TC_CONTEXT_SPECIFIC: |
| break; |
| } |
| printf("%lld]", (long long)tag->tag_value); |
| |
| switch(tag->tag_mode) { |
| case TM_DEFAULT: break; |
| case TM_IMPLICIT: printf(" IMPLICIT"); break; |
| case TM_EXPLICIT: printf(" EXPLICIT"); break; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| asn1print_value(asn1p_value_t *val, enum asn1print_flags_e flags) { |
| |
| if(val == NULL) |
| return 0; |
| |
| switch(val->type) { |
| case ATV_NOVALUE: |
| break; |
| case ATV_REFERENCED: |
| return asn1print_ref(val->value.reference, flags); |
| case ATV_INTEGER: |
| printf("%lld", (long long)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_REAL: |
| printf("%f", val->value.v_double); |
| return 0; |
| case ATV_STRING: |
| { |
| char *p = 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(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"); |
| } |
| } |
| } |
| |
| assert(val->type || !"Unknown"); |
| |
| return 0; |
| } |
| |
| static int |
| asn1print_constraint(asn1p_constraint_t *ct, enum asn1print_flags_e flags) { |
| int symno = 0; |
| |
| if(ct == 0) return 0; |
| |
| if(ct->type == ACT_CA_SET) |
| printf("("); |
| |
| switch(ct->type) { |
| 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: |
| case ACT_CT_WCOMPS: |
| printf("???"); |
| 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 ", "^", "|", ",", |
| "", "(" }; |
| int i; |
| for(i = 0; i < ct->el_count; i++) { |
| enum asn1print_flags_e nflags = flags; |
| if(i) fputs(symtable[symno], stdout); |
| if(ct->type == ACT_CA_CRC) fputs("{", stdout); |
| asn1print_constraint(ct->elements[i], nflags); |
| if(ct->type == ACT_CA_CRC) fputs("}", stdout); |
| if(i+1 < ct->el_count |
| && ct->type == ACT_CA_SET) |
| fputs(")", stdout); |
| } |
| } |
| 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_e 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_e 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_expr(asn1p_expr_t *tc, enum asn1print_flags_e flags, int level) { |
| |
| if(flags & APF_LINE_COMMENTS) |
| INDENT("-- #line %d\n", tc->_lineno); |
| if(tc->Identifier) |
| INDENT("%s", tc->Identifier); |
| |
| if(tc->params) { |
| asn1print_params(tc->params, flags); |
| } |
| |
| if(tc->meta_type != AMT_VALUE |
| && tc->expr_type != A1TC_EXTENSIBLE) { |
| if(level) { |
| if(tc->Identifier) |
| 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_REFERENCE: |
| case A1TC_UNIVERVAL: |
| case A1TC_PARAMETRIZED: |
| break; |
| case A1TC_CLASSDEF: |
| printf(" CLASS"); |
| break; |
| case A1TC_CLASSFIELD: |
| /* Nothing to print here */ |
| break; |
| default: |
| { |
| char *p = ASN_EXPR_TYPE2STR(tc->expr_type); |
| printf(" %s", p?p:"<unknown type!>"); |
| } |
| break; |
| } |
| |
| if(tc->reference) { |
| printf(" "); |
| asn1print_ref(tc->reference, flags); |
| } |
| |
| /* |
| * Display the descendants (children) of the current type. |
| */ |
| if(TQ_FIRST(&(tc->members))) { |
| asn1p_expr_t *se; /* SubExpression */ |
| |
| if((tc->expr_type != ASN_CONSTR_SEQUENCE_OF |
| && tc->expr_type != ASN_CONSTR_SET_OF) |
| || TQ_FIRST(&(tc->members))->expr_type & ASN_CONSTR_MASK) |
| printf(" {\n"); |
| |
| TQ_FOR(se, &(tc->members), next) { |
| /* |
| * Print the expression as it were stand-alone type. |
| */ |
| asn1print_expr(se, flags, level + 4); |
| switch(se->marker) { |
| case EM_NOMARK: break; |
| case EM_OPTIONAL: printf(" OPTIONAL"); break; |
| case EM_DEFAULT: printf(" DEFAULT <?>"); break; |
| } |
| if(TQ_NEXT(se, next)) { |
| printf(","); |
| INDENT("\n"); |
| } |
| } |
| |
| if((tc->expr_type != ASN_CONSTR_SEQUENCE_OF |
| && tc->expr_type != ASN_CONSTR_SET_OF) |
| || TQ_FIRST(&(tc->members))->expr_type & ASN_CONSTR_MASK) { |
| printf("\n"); |
| INDENT("}"); |
| } |
| } |
| |
| if(tc->with_syntax) |
| asn1print_with_syntax(tc->with_syntax, flags); |
| |
| if(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) |
| printf("("); |
| else |
| printf(" ::= "); |
| asn1print_value(tc->value, flags); |
| if(tc->expr_type == A1TC_UNIVERVAL) |
| printf(")"); |
| } |
| |
| return 0; |
| } |