diff options
Diffstat (limited to 'epan/dissectors/packet-per.c')
| -rw-r--r-- | epan/dissectors/packet-per.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/epan/dissectors/packet-per.c b/epan/dissectors/packet-per.c index 33998810f4..f2a9a36ba0 100644 --- a/epan/dissectors/packet-per.c +++ b/epan/dissectors/packet-per.c @@ -1880,6 +1880,44 @@ guint32 dissect_per_octet_string_containing_pdu_new(tvbuff_t *tvb, guint32 offse return offset; } +guint32 dissect_per_size_constrained_type(tvbuff_t *tvb, guint32 offset, asn1_ctx_t *actx, proto_tree *tree, int hf_index, per_type_fn type_cb, const gchar *name, int min_len, int max_len, gboolean has_extension) +{ + asn1_stack_frame_push(actx, name); + asn1_param_push_integer(actx, min_len); + asn1_param_push_integer(actx, max_len); + asn1_param_push_boolean(actx, has_extension); + + offset = type_cb(tvb, offset, actx, tree, hf_index); + + asn1_stack_frame_pop(actx, name); + + return offset; +} + +gboolean get_size_constraint_from_stack(asn1_ctx_t *actx, const gchar *name, int *pmin_len, int *pmax_len, gboolean *phas_extension) +{ + asn1_par_t *par; + + if (pmin_len) *pmin_len = NO_BOUND; + if (pmax_len) *pmax_len = NO_BOUND; + if (phas_extension) *phas_extension = FALSE; + + if (!actx->stack) return FALSE; + if (strcmp(actx->stack->name, name)) return FALSE; + + par = actx->stack->par; + if (!par || (par->ptype != ASN1_PAR_INTEGER)) return FALSE; + if (pmin_len) *pmin_len = par->value.v_integer; + par = par->next; + if (!par || (par->ptype != ASN1_PAR_INTEGER)) return FALSE; + if (pmax_len) *pmax_len = par->value.v_integer; + par = par->next; + if (!par || (par->ptype != ASN1_PAR_BOOLEAN)) return FALSE; + if (phas_extension) *phas_extension = par->value.v_boolean; + + return TRUE; +} + /* 26 Encoding of a value of the external type */ |