| #include "asn1fix_internal.h" |
| #include "asn1fix_cws.h" |
| |
| static int _asn1f_parse_class_object_data(arg_t *, asn1p_expr_t *eclass, |
| struct asn1p_ioc_row_s *row, asn1p_wsyntx_t *syntax, |
| const uint8_t *buf, const uint8_t *bend, |
| int optional_mode, const uint8_t **newpos, int counter); |
| static int _asn1f_assign_cell_value(arg_t *arg, struct asn1p_ioc_cell_s *cell, const uint8_t *buf, const uint8_t *bend, int counter); |
| static asn1p_wsyntx_chunk_t *asn1f_next_literal_chunk(asn1p_wsyntx_t *syntax, asn1p_wsyntx_chunk_t *chunk, const uint8_t *buf); |
| |
| int |
| asn1f_check_class_object(arg_t *arg) { |
| asn1p_expr_t *expr = arg->expr; |
| asn1p_expr_t *eclass; |
| asn1p_ioc_row_t *row; |
| int ret; |
| |
| if(expr->meta_type != AMT_VALUESET |
| || expr->expr_type != A1TC_REFERENCE |
| || !expr->value |
| || expr->value->type != ATV_UNPARSED) { |
| return 0; |
| } |
| |
| eclass = asn1f_find_terminal_type(arg, expr); |
| if(!eclass |
| || eclass->meta_type != AMT_OBJECTCLASS |
| || eclass->expr_type != A1TC_CLASSDEF) { |
| return 0; |
| } |
| |
| if(!eclass->with_syntax) { |
| DEBUG("Can't process classes without %s just yet", |
| "WITH SYNTAX"); |
| return 0; |
| } |
| |
| row = asn1p_ioc_row_new(eclass); |
| assert(row); |
| |
| ret = _asn1f_parse_class_object_data(arg, eclass, row, |
| eclass->with_syntax, |
| expr->value->value.string.buf + 1, |
| expr->value->value.string.buf |
| + expr->value->value.string.size - 1, |
| 0, 0, 0); |
| |
| asn1p_ioc_row_delete(row); |
| |
| return ret; |
| } |
| |
| static int |
| _asn1f_is_ioc_row_duplicate(asn1p_ioc_table_t *it, asn1p_ioc_row_t *row) { |
| if(!it) { |
| return 0; |
| } |
| |
| for(size_t i = 0; i < it->rows; i++) { |
| switch(asn1p_ioc_row_match(it->row[i], row)) { |
| default: |
| case -1: |
| return -1; |
| case 1: |
| continue; |
| case 0: |
| return 1; /* Duplicate! */ |
| } |
| } |
| return 0; |
| } |
| |
| struct parse_object_key { |
| arg_t *arg; |
| asn1p_expr_t *expr; /* InformationObjectSet */ |
| asn1p_expr_t *eclass; /* CLASS */ |
| int sequence; /* Sequence counter */ |
| }; |
| |
| /* |
| * Add to the IoC table if the row is unique. |
| */ |
| static int |
| _asn1f_add_unique_row(arg_t *arg, asn1p_expr_t *expr, asn1p_ioc_row_t *row) { |
| assert(expr->ioc_table); |
| |
| /* Look for duplicates */ |
| switch(_asn1f_is_ioc_row_duplicate(expr->ioc_table, row)) { |
| case -1: |
| DEBUG("Found Information Object Duplicate in %s", expr->Identifier, |
| expr->_lineno); |
| return -1; |
| case 0: |
| /* Not a duplicate */ |
| break; |
| case 1: |
| /* Proper duplicate detected; ignore */ |
| asn1p_ioc_row_delete(row); |
| return 0; |
| } |
| |
| asn1p_ioc_table_add(expr->ioc_table, row); |
| |
| return 0; |
| } |
| |
| /* |
| * Given a single blob of unparsed Information Object specification, parse it |
| * into a given InformationObjectSet. |
| */ |
| static int |
| _asn1f_parse_object_cb(const uint8_t *buf, size_t size, void *keyp) { |
| struct parse_object_key *key = keyp; |
| arg_t *arg = key->arg; |
| asn1p_expr_t *expr = key->expr; |
| asn1p_expr_t *eclass = key->eclass; |
| asn1p_ioc_row_t *row; |
| int ret; |
| |
| key->sequence++; |
| |
| row = asn1p_ioc_row_new(eclass); |
| assert(row); |
| |
| ret = _asn1f_parse_class_object_data(arg, eclass, row, eclass->with_syntax, |
| buf, buf + size, 0, 0, key->sequence); |
| if(ret) { |
| LOG((int)(ret < 0), |
| "Cannot parse %s of CLASS %s found at line %d", |
| expr->Identifier, eclass->Identifier, expr->_lineno); |
| asn1p_ioc_row_delete(row); |
| return ret; |
| } |
| |
| /* Add object to a CLASS. */ |
| if(_asn1f_add_unique_row(arg, eclass, row) != 0) |
| return -1; |
| |
| /* |
| * Add a copy of the object to the Information Object Set. |
| */ |
| row = asn1p_ioc_row_new(eclass); |
| assert(row); |
| ret = _asn1f_parse_class_object_data(arg, eclass, row, eclass->with_syntax, |
| buf, buf + size, 0, 0, key->sequence); |
| assert(ret == 0); |
| |
| if(_asn1f_add_unique_row(arg, expr, row) != 0) |
| return -1; |
| |
| return 0; |
| } |
| |
| static int |
| _asn1f_foreach_unparsed_union(const asn1p_constraint_t *ct_union, |
| int (*process)(const uint8_t *buf, size_t size, |
| void *key), |
| void *key) { |
| assert(ct_union->type == ACT_CA_UNI); |
| |
| for(size_t j = 0; j < ct_union->el_count; j++) { |
| const asn1p_constraint_t *ct2 = ct_union->elements[j]; |
| if(ct2->type == ACT_EL_VALUE && ct2->value->type == ATV_UNPARSED) { |
| if(process |
| && process(ct2->value->value.string.buf + 1, |
| ct2->value->value.string.size - 2, key) |
| != 0) { |
| return -1; |
| } |
| continue; |
| } |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| _asn1f_foreach_unparsed(arg_t *arg, const asn1p_constraint_t *ct, |
| int (*process)(const uint8_t *buf, size_t size, |
| void *key), |
| void *keyp) { |
| struct parse_object_key *key = keyp; |
| if(!ct) return -1; |
| |
| switch(ct->type) { |
| default: |
| DEBUG("Constraint is of unknown type %d for CWS", ct->type); |
| return -1; |
| case ACT_EL_EXT: /* ... */ |
| if(key) { |
| key->expr->ioc_table->extensible = 1; |
| } |
| return 0; |
| case ACT_CA_UNI: /* | */ |
| return _asn1f_foreach_unparsed_union(ct, process, keyp); |
| case ACT_CA_CSV: /* , */ |
| break; |
| } |
| |
| for(size_t i = 0; i < ct->el_count; i++) { |
| const asn1p_constraint_t *ct1 = ct->elements[i]; |
| if(_asn1f_foreach_unparsed(arg, ct1, process, keyp) != 0) { |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int |
| _asn1f_constraint_looks_like_object_set(arg_t *arg, |
| const asn1p_constraint_t *ct) { |
| return 0 == _asn1f_foreach_unparsed(arg, ct, NULL, NULL); |
| } |
| |
| int |
| asn1f_parse_class_object(arg_t *arg) { |
| asn1p_expr_t *expr = arg->expr; |
| asn1p_expr_t *eclass; |
| enum { |
| FROM_VALUE, |
| FROM_CONSTRAINT, |
| } source = FROM_VALUE; |
| |
| if(expr->meta_type == AMT_VALUE |
| && expr->expr_type == A1TC_REFERENCE |
| && expr->value && expr->value->type == ATV_UNPARSED) { |
| source = FROM_VALUE; |
| } else if(expr->meta_type != AMT_VALUESET |
| || expr->expr_type != A1TC_REFERENCE) { |
| return 0; |
| } else if(expr->value && expr->value->type == ATV_UNPARSED) { |
| source = FROM_VALUE; |
| } else if(!expr->value) { |
| if(_asn1f_constraint_looks_like_object_set(arg, expr->constraints)) { |
| source = FROM_CONSTRAINT; |
| } else { |
| return 0; |
| } |
| } else { |
| return 0; |
| } |
| |
| /* |
| * Find the governing class. |
| */ |
| eclass = asn1f_find_terminal_type(arg, expr); |
| if(!eclass |
| || eclass->meta_type != AMT_OBJECTCLASS |
| || eclass->expr_type != A1TC_CLASSDEF) { |
| return 0; |
| } |
| |
| DEBUG("Value %s of CLASS %s found at line %d", |
| expr->Identifier, eclass->Identifier, expr->_lineno); |
| |
| if(!eclass->with_syntax) { |
| DEBUG("Can't process classes without %s just yet", |
| "WITH SYNTAX"); |
| return 0; |
| } |
| |
| struct parse_object_key key = { |
| .arg = arg, |
| .expr = expr, |
| .eclass = eclass, |
| .sequence = 0 |
| }; |
| |
| if(!expr->ioc_table) { |
| expr->ioc_table = asn1p_ioc_table_new(); |
| } |
| |
| if(!eclass->ioc_table) { |
| eclass->ioc_table = asn1p_ioc_table_new(); |
| } |
| |
| switch(source) { |
| case FROM_VALUE: |
| if(_asn1f_parse_object_cb(expr->value->value.string.buf + 1, |
| expr->value->value.string.size - 2, &key) |
| != 0) { |
| return -1; |
| } |
| break; |
| case FROM_CONSTRAINT: |
| if(_asn1f_foreach_unparsed(arg, expr->constraints, |
| _asn1f_parse_object_cb, &key) |
| != 0) { |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| #define SKIPSPACES for(; buf < bend && isspace(*buf); buf++) |
| |
| static int |
| _asn1f_parse_class_object_data(arg_t *arg, asn1p_expr_t *eclass, |
| struct asn1p_ioc_row_s *row, asn1p_wsyntx_t *syntax, |
| const uint8_t *buf, const uint8_t *bend, |
| int optional_mode, const uint8_t **newpos, int counter) { |
| struct asn1p_wsyntx_chunk_s *chunk; |
| int ret; |
| |
| TQ_FOR(chunk, (&syntax->chunks), next) { |
| switch(chunk->type) { |
| case WC_LITERAL: { |
| int token_len = strlen(chunk->content.token); |
| SKIPSPACES; |
| if(bend - buf < token_len |
| || memcmp(buf, chunk->content.token, token_len)) { |
| if(!optional_mode) { |
| FATAL("While parsing object class value %s at line %d: Expected: \"%s\", found: \"%s\"", |
| arg->expr->Identifier, arg->expr->_lineno, chunk->content.token, buf); |
| } |
| if(newpos) *newpos = buf; |
| return -1; |
| } |
| buf += token_len; |
| } break; |
| case WC_WHITESPACE: break; /* Ignore whitespace */ |
| case WC_FIELD: { |
| struct asn1p_ioc_cell_s *cell; |
| asn1p_wsyntx_chunk_t *next_literal; |
| const uint8_t *buf_old = buf; |
| const uint8_t *p = 0; |
| |
| SKIPSPACES; |
| |
| next_literal = asn1f_next_literal_chunk(syntax, chunk, buf); |
| if(!next_literal) { |
| p += (bend - p); |
| } else { |
| p = (uint8_t *)strstr((const char *)buf, (const char *)next_literal->content.token); |
| if(!p) { |
| if (!optional_mode) |
| FATAL("Next literal \"%s\" not found !", next_literal->content.token); |
| |
| if(newpos) *newpos = buf_old; |
| return -1; |
| } |
| } |
| cell = asn1p_ioc_row_cell_fetch(row, |
| chunk->content.token); |
| if(cell == NULL) { |
| FATAL("Field reference %s found in WITH SYNAX {} clause does not match actual field in Object Class %s", |
| chunk->content.token, |
| eclass->Identifier, eclass->_lineno); |
| if(newpos) *newpos = buf; |
| return -1; |
| } |
| DEBUG("Reference %s satisfied by %s (%d)", |
| chunk->content.token, |
| buf, p - buf); |
| ret = _asn1f_assign_cell_value(arg, cell, buf, p, counter); |
| if(ret) return ret; |
| buf = p; |
| if(newpos) *newpos = buf; |
| } break; |
| case WC_OPTIONALGROUP: { |
| const uint8_t *np = 0; |
| SKIPSPACES; |
| ret = _asn1f_parse_class_object_data(arg, eclass, row, |
| chunk->content.syntax, buf, bend, 1, &np, counter); |
| if(newpos) *newpos = np; |
| if(ret && np != buf) |
| return ret; |
| buf = np; |
| } break; |
| } |
| } |
| |
| |
| if(newpos) *newpos = buf; |
| return 0; |
| } |
| |
| |
| static int |
| _asn1f_assign_cell_value(arg_t *arg, struct asn1p_ioc_cell_s *cell, |
| const uint8_t *buf, const uint8_t *bend, int counter) { |
| asn1p_expr_t *expr = (asn1p_expr_t *)NULL; |
| char *mivr; /* Most Immediate Value Representation */ |
| int new_ref = 1; |
| asn1p_t *asn; |
| asn1p_module_t *mod; |
| asn1p_expr_t *type_expr = (asn1p_expr_t *)NULL; |
| int i, ret = 0, psize; |
| char *pp; |
| |
| if((bend - buf) <= 0) { |
| FATAL("Assignment warning: empty string is being assigned into %s for %s at line %d", |
| cell->field->Identifier, |
| arg->expr->Identifier, arg->expr->_lineno); |
| return -1; |
| } |
| |
| mivr = malloc(bend - buf + 1); |
| assert(mivr); |
| memcpy(mivr, buf, bend - buf); |
| mivr[bend - buf] = '\0'; |
| /* remove trailing space */ |
| for (i = bend - buf - 1; (i > 0) && isspace(mivr[i]); i--) |
| mivr[i] = '\0'; |
| |
| /* This value 100 should be larger than following formatting string */ |
| psize = bend - buf + 100; |
| pp = malloc(psize); |
| if(pp == NULL) { |
| free(mivr); |
| return -1; |
| } |
| |
| if(cell->field->expr_type == A1TC_CLASSFIELD_TFS) { |
| ret = snprintf(pp, psize, |
| "M DEFINITIONS ::=\nBEGIN\n" |
| "V ::= %s\n" |
| "END\n", |
| mivr |
| ); |
| } else if(cell->field->expr_type == A1TC_CLASSFIELD_FTVFS) { |
| type_expr = TQ_FIRST(&(cell->field->members)); |
| ret = snprintf(pp, psize, |
| "M DEFINITIONS ::=\nBEGIN\n" |
| "v %s ::= %s\n" |
| "END\n", |
| type_expr->reference ? |
| type_expr->reference->components[0].name : |
| _asn1p_expr_type2string(type_expr->expr_type), |
| mivr |
| ); |
| } else { |
| WARNING("asn1c only be able to parse TypeFieldSpec and FixedTypeValueFieldSpec. Failed when parsing %s at line %d\n", mivr, arg->expr->_lineno); |
| free(mivr); |
| free(pp); |
| return -1; |
| } |
| DEBUG("ASN.1:\n\n%s\n", pp); |
| |
| assert(ret < psize); |
| psize = ret; |
| |
| asn = asn1p_parse_buffer(pp, psize, |
| arg->expr->module->source_file_name, arg->expr->_lineno, A1P_NOFLAGS); |
| free(pp); |
| if(asn == NULL) { |
| FATAL("Cannot parse Setting token %s " |
| "at line %d", |
| mivr, |
| arg->expr->_lineno |
| ); |
| free(mivr); |
| return -1; |
| } else { |
| mod = TQ_FIRST(&(asn->modules)); |
| assert(mod); |
| expr = TQ_REMOVE(&(mod->members), next); |
| assert(expr); |
| |
| expr->parent_expr = NULL; |
| asn1p_expr_set_source(expr, arg->expr->module, arg->expr->_lineno); |
| expr->_type_unique_index = counter; |
| DEBUG("Parsed identifier %s, mivr [%s], reference [%s] value [%s]", |
| expr->Identifier, mivr, asn1p_ref_string(expr->reference), |
| asn1f_printable_value(expr->value)); |
| free(expr->Identifier); |
| if(expr->value) { |
| expr->Identifier = strdup(asn1f_printable_value(expr->value)); |
| } else if (expr->reference) { |
| expr->Identifier = strdup(expr->reference->components[expr->reference->comp_count - 1].name); |
| } else { |
| expr->Identifier = mivr; |
| } |
| asn1p_delete(asn); |
| } |
| |
| if(expr->reference && |
| !asn1f_lookup_symbol(arg, expr->rhs_pspecs, expr->reference)) { |
| |
| asn1p_ref_free(expr->reference); |
| new_ref = 0; |
| expr->reference = type_expr->reference; |
| if (asn1f_value_resolve(arg, expr, 0)) { |
| expr->reference = 0; |
| asn1p_expr_free(expr); |
| FATAL("Cannot find %s referenced by %s at line %d", |
| mivr, arg->expr->Identifier, |
| arg->expr->_lineno); |
| free(mivr); |
| return -1; |
| } |
| } |
| |
| DEBUG("Field %s assignment of %s got %s", |
| cell->field->Identifier, mivr, expr->Identifier); |
| |
| cell->value = expr; |
| cell->new_ref = new_ref; |
| |
| if(expr->Identifier != mivr) { |
| free(mivr); |
| } |
| |
| return 0; |
| } |
| |
| static asn1p_wsyntx_chunk_t * |
| asn1f_next_literal_chunk(asn1p_wsyntx_t *syntax, asn1p_wsyntx_chunk_t *chunk, const uint8_t *buf) |
| { |
| asn1p_wsyntx_chunk_t *next_chunk; |
| |
| next_chunk = TQ_NEXT(chunk, next); |
| do { |
| if(next_chunk == (struct asn1p_wsyntx_chunk_s *)0) { |
| if(!syntax->parent) |
| break; |
| next_chunk = TQ_NEXT(syntax->parent, next); |
| } else if(next_chunk->type == WC_LITERAL) { |
| if(strstr((const char *)buf, (char *)next_chunk->content.token)) |
| break; |
| if(!syntax->parent) |
| break; |
| next_chunk = TQ_NEXT(syntax->parent, next); |
| } else if(next_chunk->type == WC_WHITESPACE) { |
| next_chunk = TQ_NEXT(next_chunk, next); |
| } else if(next_chunk->type == WC_OPTIONALGROUP) { |
| syntax = next_chunk->content.syntax; |
| next_chunk = TQ_FIRST(((&next_chunk->content.syntax->chunks))); |
| } else |
| break; |
| } while (next_chunk); |
| |
| return next_chunk; |
| } |