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#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,
uint8_t *buf, const uint8_t *bend,
int optional_mode, uint8_t **newpos);
static int _asn1f_assign_cell_value(arg_t *arg, struct asn1p_ioc_row_s *row, struct asn1p_ioc_cell_s *cell, uint8_t *buf, const uint8_t *bend);
int
asn1f_parse_class_object(arg_t *arg) {
asn1p_expr_t *expr = arg->expr;
asn1p_expr_t *eclass;
asn1p_ioc_row_t *row;
void *new_rows_ptr;
int ret;
if(expr->meta_type != AMT_VALUE
|| expr->expr_type != A1TC_REFERENCE
|| !expr->value
|| expr->value->type != ATV_UNPARSED)
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;
}
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);
if(ret) {
LOG((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;
}
new_rows_ptr = realloc(eclass->object_class_matrix.row,
(eclass->object_class_matrix.rows + 1)
* sizeof(eclass->object_class_matrix.row[0]));
assert(new_rows_ptr);
eclass->object_class_matrix.row = new_rows_ptr;
eclass->object_class_matrix.row[eclass->object_class_matrix.rows] = row;
eclass->object_class_matrix.rows++;
/* Propagate max identifier length */
if(eclass->object_class_matrix.max_identifier_length
< row->max_identifier_length)
eclass->object_class_matrix.max_identifier_length
= row->max_identifier_length;
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,
uint8_t *buf, const uint8_t *bend,
int optional_mode, uint8_t **newpos) {
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;
int lbraces = 0;
uint8_t *p;
SKIPSPACES;
p = buf;
if(p < bend && *p == '{')
lbraces = 1, p++;
for(; p < bend; p++) {
if(lbraces) {
/* Search the terminating brace */
switch(*p) {
case '}': lbraces--; break;
case '{': lbraces++; break;
}
} else if(isspace(*p)) {
break;
}
}
if(lbraces) {
FATAL("Field reference %s found in class value definition for %s at line %d can not be satisfied by broken value \"%s\"",
chunk->content.token,
arg->expr->Identifier, arg->expr->_lineno, buf);
if(newpos) *newpos = buf;
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, row, cell, buf, p);
if(ret) return ret;
buf = p;
if(newpos) *newpos = buf;
} break;
case WC_OPTIONALGROUP: {
uint8_t *np = 0;
SKIPSPACES;
ret = _asn1f_parse_class_object_data(arg, eclass, row,
chunk->content.syntax, buf, bend, 1, &np);
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_row_s *row, struct asn1p_ioc_cell_s *cell,
uint8_t *buf, const uint8_t *bend) {
asn1p_expr_t *expr;
asn1p_ref_t *ref;
char *p;
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;
}
p = malloc(bend - buf + 1);
assert(p);
memcpy(p, buf, bend - buf);
p[bend - buf] = '\0';
if(!isalpha(*p)) {
if(isdigit(*p)) {
asn1c_integer_t value;
if(asn1p_atoi(p, &value)) {
FATAL("Value %s at line %d is too large for this compiler! Please contact the asn1c author.\n", p, arg->expr->_lineno);
return -1;
}
expr = asn1p_expr_new(arg->expr->_lineno);
expr->Identifier = p;
expr->meta_type = AMT_VALUE;
expr->expr_type = ASN_BASIC_INTEGER;
expr->value = asn1p_value_fromint(value);
} else {
WARNING("asn1c is not yet able to parse arbitrary direct values; please convert %s at line %d to a reference.", p, arg->expr->_lineno);
free(p);
return 1;
}
} else {
ref = asn1p_ref_new(arg->expr->_lineno);
asn1p_ref_add_component(ref, p, RLT_UNKNOWN);
assert(ref);
expr = asn1f_lookup_symbol(arg, arg->mod, ref);
if(!expr) {
FATAL("Cannot find %s referenced by %s at line %d",
p, arg->expr->Identifier,
arg->expr->_lineno);
return -1;
}
}
DEBUG("Field %s assignment of %s got %s",
cell->field->Identifier, p, expr->Identifier);
cell->value = expr;
if(row->max_identifier_length < strlen(expr->Identifier))
row->max_identifier_length = strlen(expr->Identifier);
return 0;
}
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