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/*
* Copyright 2015 Michael Tuexen
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/*
* Author: tuexen@fh-muenster.de (Michael Tuexen)
*
* Implementation for generating human-readable representations of SCTP chunks.
*/
#include "sctp_chunk_to_string.h"
#include "sctp_iterator.h"
static int sctp_parameter_to_string(FILE *, struct sctp_parameter *, char **);
static int sctp_heartbeat_information_parameter_to_string(
FILE *s,
struct sctp_heartbeat_information_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_heartbeat_information_parameter)) {
asprintf(error, "HEARTBEAT_INFORMATION parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fprintf(s, "HEARTBEAT_INFORMATION[len=%u, val=...]", length);
return STATUS_OK;
}
static int sctp_ipv4_address_parameter_to_string(
FILE *s,
struct sctp_ipv4_address_parameter *parameter,
char **error)
{
u16 length;
char buffer[INET_ADDRSTRLEN];
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_ipv4_address_parameter)) {
asprintf(error, "IPV4_ADDRESS parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
inet_ntop(AF_INET, ¶meter->addr, buffer, INET_ADDRSTRLEN);
fprintf(s, "IPV4_ADDRESS[addr=%s]", buffer);
return STATUS_OK;
}
static int sctp_ipv6_address_parameter_to_string(
FILE *s,
struct sctp_ipv6_address_parameter *parameter,
char **error)
{
u16 length;
char buffer[INET6_ADDRSTRLEN];
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_ipv6_address_parameter)) {
asprintf(error, "IPV6_ADDRESS parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
inet_ntop(AF_INET6, ¶meter->addr, buffer, INET6_ADDRSTRLEN);
fprintf(s, "IPV6_ADDRESS[addr=%s]", buffer);
return STATUS_OK;
}
static int sctp_state_cookie_parameter_to_string(
FILE *s,
struct sctp_state_cookie_parameter *parameter,
char **error)
{
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_state_cookie_parameter)) {
asprintf(error, "STATE_COOKIE parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fprintf(s, "STATE_COOKIE[len=%d, val=...]", length);
return STATUS_OK;
}
static int sctp_unrecognized_parameter_parameter_to_string(
FILE *s,
struct sctp_unrecognized_parameter_parameter *parameter,
char **error)
{
u16 length;
int result = STATUS_OK;
length = ntohs(parameter->length);
if (length < (sizeof(struct sctp_unrecognized_parameter_parameter) +
sizeof(struct sctp_parameter))) {
asprintf(error,
"UNRECOGNIZED_PARAMETER parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fputs("UNRECOGNIZED_PARAMETER[params=[", s);
result = sctp_parameter_to_string(s,
(struct sctp_parameter *)parameter->value, error);
return result;
}
static int sctp_cookie_preservative_parameter_to_string(
FILE *s,
struct sctp_cookie_preservative_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_cookie_preservative_parameter)) {
asprintf(error,
"COOKIE_PRESERVATIVE parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fputs("COOKIE_PRESERVATIVE[incr=", s);
fprintf(s, "%u", ntohl(parameter->increment));
fputc(']', s);
return STATUS_OK;
}
static int sctp_hostname_parameter_to_string(
FILE *s,
struct sctp_hostname_address_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_hostname_address_parameter)) {
asprintf(error, "HOSTNAME_ADDRESS parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fprintf(s, "HOSTNAME_ADDRESS[addr=\"%.*s\"]",
(int)(length - sizeof(struct sctp_hostname_address_parameter)),
(char *)parameter->hostname);
return STATUS_OK;
}
static int sctp_supported_address_types_parameter_to_string(
FILE *s,
struct sctp_supported_address_types_parameter *parameter,
char **error)
{
u16 i, length, nr_address_types;
length = ntohs(parameter->length);
if ((length < sizeof(struct sctp_supported_address_types_parameter)) ||
((length & 0x0001) != 0)) {
asprintf(error,
"SUPPORTED_ADDRESS_TYPES parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
nr_address_types =
(length - sizeof(struct sctp_supported_address_types_parameter))
/ sizeof(u16);
fputs("SUPPORTED_ADDRESS_TYPES[types=[", s);
for (i = 0; i < nr_address_types; i++) {
if (i > 0)
fputs(", ", s);
switch (ntohs(parameter->address_type[i])) {
case SCTP_IPV4_ADDRESS_PARAMETER_TYPE:
break;
case SCTP_IPV6_ADDRESS_PARAMETER_TYPE:
break;
case SCTP_HOSTNAME_ADDRESS_PARAMETER_TYPE:
fputs("HOSTNAME", s);
break;
default:
fprintf(s, "0x%04x", ntohs(parameter->address_type[i]));
break;
}
}
return STATUS_OK;
}
static int sctp_outgoing_ssn_reset_request_parameter_to_string(
FILE *s,
struct sctp_outgoing_ssn_reset_request_parameter *parameter,
char **error)
{
u16 length;
u32 reqsn;
u32 respsn;
u32 last_tsn;
int len;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_outgoing_ssn_reset_request_parameter)) {
fputs("invalid OUTGOING_SSN_RESET_REQUEST parameter", s);
asprintf(error, "OUTGOING_SSN_RESET_REQUEST parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
reqsn = ntohl(parameter->reqsn);
respsn = ntohl(parameter->respsn);
last_tsn = ntohl(parameter->last_tsn);
fputs("OUTGOING_SSN_RESET[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "req_sn=%u, ", reqsn);
fprintf(s, "resp_sn=%u, ", respsn);
fprintf(s, "last_tsn=%u, ", last_tsn);
fputs("sids=[", s);
for(len = 0; len < ((length-16)/sizeof(u16)); len++) {
u16 sid;
}
fputs("]", s);
return STATUS_OK;
}
static int sctp_incoming_ssn_reset_request_parameter_to_string(
FILE *s,
struct sctp_incoming_ssn_reset_request_parameter *parameter,
char **error)
{
u16 length;
u32 reqsn;
int len;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_incoming_ssn_reset_request_parameter)) {
fputs("invalid INCOMING_SSN_RESET_REQUEST parameter", s);
asprintf(error, "INCOMING_SSN_RESET_REQUEST parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
reqsn = ntohl(parameter->reqsn);
fputs("INCOMING_SSN_RESET[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "req_sn=%u, ", reqsn);
fputs("sids=[", s);
for(len = 0; len < ((length-8)/sizeof(u16)); len++) {
u16 sid;
sid = ntohs(parameter->sids[len]);
if (len > 0)
fprintf(s, ", ");
}
fputs("]", s);
return STATUS_OK;
}
static int sctp_ssn_tsn_reset_request_parameter_to_string(
FILE *s,
struct sctp_ssn_tsn_reset_request_parameter *parameter,
char **error)
{
u16 length;
u32 reqsn;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_ssn_tsn_reset_request_parameter)) {
fputs("invalid SSN_TSN_RESET_REQUEST parameter", s);
asprintf(error, "SSN_TSN_RESET_REQUEST parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
reqsn = ntohl(parameter->reqsn);
fputs("SSN_TSN_RESET[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "req_sn=%u", reqsn);
fputs("]", s);
return STATUS_OK;
}
static int sctp_reconfig_response_parameter_to_string(
FILE *s,
struct sctp_reconfig_response_parameter *parameter,
char **error)
{
u16 length;
u32 respsn;
u32 result;
u32 sender_next_tsn;
u32 receiver_next_tsn;
length = ntohs(parameter->length);
if ((length != sizeof(struct sctp_reconfig_response_parameter)) &&
(length != sizeof(struct sctp_reconfig_response_parameter) - 8)) {
fputs("invalid RECONFIG_RESPONSE parameter", s);
asprintf(error, "RECONFIG_RESPONSE parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
respsn = ntohl(parameter->respsn);
result = ntohl(parameter->result);
fputs("RECONFIG_RESPONSE[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "resp_sn=%u, ", respsn);
fprintf(s, "result=%u", result);
if (length == sizeof(struct sctp_reconfig_response_parameter)){
sender_next_tsn = ntohl(parameter->sender_next_tsn);
receiver_next_tsn = ntohl(parameter->receiver_next_tsn);
fprintf(s, ", sender_next_tsn=%u, ", sender_next_tsn);
fprintf(s, "receiver_next_tsn=%u", receiver_next_tsn);
}
fputs("]", s);
return STATUS_OK;
}
static int sctp_add_outgoing_streams_request_parameter_to_string(
FILE *s,
struct sctp_add_outgoing_streams_request_parameter *parameter,
char **error)
{
u16 length;
u32 reqsn;
u16 number_of_new_streams;
u16 reserved;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_add_outgoing_streams_request_parameter)) {
fputs("invalid ADD_OUTGOING_STREAMS_REQUEST parameter", s);
asprintf(error, "ADD_OUTGOING_STREAMS_REQUEST parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
reqsn = ntohl(parameter->reqsn);
number_of_new_streams = ntohs(parameter->number_of_new_streams);
reserved = ntohs(parameter->reserved);
fputs("ADD_OUTGOING_STREAMS[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "req_sn=%u, ", reqsn);
fprintf(s, "number_of_new_streams=%hu, ", number_of_new_streams);
fprintf(s, "reserved=%hu", reserved);
fputs("]", s);
return STATUS_OK;
}
static int sctp_add_incoming_streams_request_parameter_to_string(
FILE *s,
struct sctp_add_incoming_streams_request_parameter *parameter,
char **error)
{
u16 length;
u32 reqsn;
u16 number_of_new_streams;
u16 reserved;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_add_incoming_streams_request_parameter)) {
fputs("invalid ADD_INCOMING_STREAMS_REQUEST parameter", s);
asprintf(error, "ADD_INCOMING_STREAMS_REQUEST parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
reqsn = ntohl(parameter->reqsn);
number_of_new_streams = ntohs(parameter->number_of_new_streams);
reserved = ntohs(parameter->reserved);
fputs("ADD_INCOMING_STREAMS[", s);
fprintf(s, "len=%hu, ", length);
fprintf(s, "req_sn=%u, ", reqsn);
fprintf(s, "number_of_new_streams=%hu, ", number_of_new_streams);
fprintf(s, "reserved=%hu", reserved);
fputs("]", s);
return STATUS_OK;
}
static int sctp_ecn_capable_parameter_to_string(
FILE *s,
struct sctp_ecn_capable_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_ecn_capable_parameter)) {
asprintf(error, "ECN_CAPABLE parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fputs("ECN_CAPABLE[]", s);
return STATUS_OK;
}
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static int sctp_chunks_parameter_to_string(
FILE *s,
struct sctp_chunks_parameter *parameter,
char **error)
{
u16 length, nr_chunk_types, i;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_chunks_parameter)) {
asprintf(error,
"CHUNKS parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
nr_chunk_types = length - sizeof(struct sctp_chunks_parameter);
fputs("CHUNKS[types=[", s);
for (i = 0; i < nr_chunk_types; i++) {
if (i > 0)
fputs(", ", s);
switch (parameter->chunk_type[i]) {
case SCTP_DATA_CHUNK_TYPE:
fputs("DATA", s);
break;
case SCTP_INIT_CHUNK_TYPE:
fputs("INIT", s);
break;
case SCTP_INIT_ACK_CHUNK_TYPE:
fputs("INIT_ACK", s);
break;
case SCTP_SACK_CHUNK_TYPE:
fputs("SACK", s);
break;
case SCTP_HEARTBEAT_CHUNK_TYPE:
fputs("HEARTBEAT", s);
break;
case SCTP_HEARTBEAT_ACK_CHUNK_TYPE:
fputs("HEARTBEAT_ACK", s);
break;
case SCTP_ABORT_CHUNK_TYPE:
fputs("ABORT", s);
break;
case SCTP_SHUTDOWN_CHUNK_TYPE:
fputs("SHUTDOWN", s);
break;
case SCTP_SHUTDOWN_ACK_CHUNK_TYPE:
fputs("SHUTDOWN_ACK", s);
break;
case SCTP_ERROR_CHUNK_TYPE:
fputs("ERROR", s);
break;
case SCTP_COOKIE_ECHO_CHUNK_TYPE:
fputs("COOKIE_ECHO", s);
break;
case SCTP_COOKIE_ACK_CHUNK_TYPE:
fputs("COOKIE_ACK", s);
break;
case SCTP_ECNE_CHUNK_TYPE:
fputs("ECNE", s);
break;
case SCTP_CWR_CHUNK_TYPE:
fputs("CWR", s);
break;
case SCTP_SHUTDOWN_COMPLETE_CHUNK_TYPE:
fputs("SHUTDOWN_COMPLETE", s);
break;
case SCTP_AUTHENTICATION_CHUNK_TYPE:
fputs("AUTH", s);
break;
case SCTP_NR_SACK_CHUNK_TYPE:
fputs("NR_SACK", s);
break;
case SCTP_I_DATA_CHUNK_TYPE:
fputs("I_DATA", s);
break;
case SCTP_ASCONF_ACK_CHUNK_TYPE:
fputs("ASCONF_ACK", s);
break;
case SCTP_RECONFIG_CHUNK_TYPE:
fputs("RECONFIG", s);
break;
case SCTP_PAD_CHUNK_TYPE:
fputs("PAD", s);
break;
case SCTP_FORWARD_TSN_CHUNK_TYPE:
fputs("FORWARD_TSN", s);
break;
case SCTP_ASCONF_CHUNK_TYPE:
fputs("ASCONF", s);
break;
case SCTP_I_FORWARD_TSN_CHUNK_TYPE:
fputs("I_FORWARD_TSN", s);
break;
default:
fprintf(s, "0x%02x", parameter->chunk_type[i]);
break;
}
}
fputs("]]", s);
return STATUS_OK;
}
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static int sctp_supported_extensions_parameter_to_string(
FILE *s,
struct sctp_supported_extensions_parameter *parameter,
char **error)
{
u16 length, nr_chunk_types, i;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_supported_extensions_parameter)) {
asprintf(error,
"SUPPORTED_EXTENSIONS parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
nr_chunk_types = length - sizeof(struct sctp_supported_extensions_parameter);
fputs("SUPPORTED_EXTENSIONS[types=[", s);
for (i = 0; i < nr_chunk_types; i++) {
if (i > 0)
fputs(", ", s);
switch (parameter->chunk_type[i]) {
case SCTP_DATA_CHUNK_TYPE:
fputs("DATA", s);
break;
case SCTP_INIT_CHUNK_TYPE:
fputs("INIT", s);
break;
case SCTP_INIT_ACK_CHUNK_TYPE:
fputs("INIT_ACK", s);
break;
case SCTP_SACK_CHUNK_TYPE:
fputs("SACK", s);
break;
case SCTP_HEARTBEAT_CHUNK_TYPE:
fputs("HEARTBEAT", s);
break;
case SCTP_HEARTBEAT_ACK_CHUNK_TYPE:
fputs("HEARTBEAT_ACK", s);
break;
case SCTP_ABORT_CHUNK_TYPE:
fputs("ABORT", s);
break;
case SCTP_SHUTDOWN_CHUNK_TYPE:
fputs("SHUTDOWN", s);
break;
case SCTP_SHUTDOWN_ACK_CHUNK_TYPE:
fputs("SHUTDOWN_ACK", s);
break;
case SCTP_ERROR_CHUNK_TYPE:
fputs("ERROR", s);
break;
case SCTP_COOKIE_ECHO_CHUNK_TYPE:
fputs("COOKIE_ECHO", s);
break;
case SCTP_COOKIE_ACK_CHUNK_TYPE:
fputs("COOKIE_ACK", s);
break;
case SCTP_ECNE_CHUNK_TYPE:
fputs("ECNE", s);
break;
case SCTP_CWR_CHUNK_TYPE:
fputs("CWR", s);
break;
case SCTP_SHUTDOWN_COMPLETE_CHUNK_TYPE:
fputs("SHUTDOWN_COMPLETE", s);
break;
case SCTP_AUTHENTICATION_CHUNK_TYPE:
fputs("AUTH", s);
break;
case SCTP_NR_SACK_CHUNK_TYPE:
fputs("NR_SACK", s);
break;
case SCTP_I_DATA_CHUNK_TYPE:
fputs("I_DATA", s);
break;
case SCTP_ASCONF_ACK_CHUNK_TYPE:
fputs("ASCONF_ACK", s);
break;
case SCTP_RECONFIG_CHUNK_TYPE:
fputs("RECONFIG", s);
break;
case SCTP_PAD_CHUNK_TYPE:
fputs("PAD", s);
break;
case SCTP_FORWARD_TSN_CHUNK_TYPE:
fputs("FORWARD_TSN", s);
break;
case SCTP_ASCONF_CHUNK_TYPE:
fputs("ASCONF", s);
break;
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case SCTP_I_FORWARD_TSN_CHUNK_TYPE:
fputs("I_FORWARD_TSN", s);
break;
default:
fprintf(s, "0x%02x", parameter->chunk_type[i]);
break;
}
}
fputs("]]", s);
return STATUS_OK;
}
static int sctp_pad_parameter_to_string(
FILE *s,
struct sctp_pad_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
fputs("PAD[", s);
fprintf(s, "len=%u, ", length);
fputs("val=...]", s);
return STATUS_OK;
}
static int sctp_adaptation_indication_parameter_to_string(
FILE *s,
struct sctp_adaptation_indication_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_adaptation_indication_parameter)) {
asprintf(error, "PARAMETER too short (type=0x%04x, length=%u)",
ntohs(parameter->type), length);
return STATUS_ERR;
}
fputs("ADAPTATION_INDICATION[", s);
fprintf(s, "type=0x%04x, ", ntohs(parameter->type));
fprintf(s, "len=%hu, ", ntohs(parameter->length));
fprintf(s, "val=%u", ntohl(parameter->adaptation_code_point));
fputs("]", s);
return STATUS_OK;
}
static int sctp_forward_tsn_supported_parameter_to_string(
FILE *s,
struct sctp_forward_tsn_supported_parameter *parameter,
char **error)
{
u16 length;
length = ntohs(parameter->length);
if (length != sizeof(struct sctp_forward_tsn_supported_parameter)) {
asprintf(error, "FORWARD_TSN_SUPPORTED parameter illegal (length=%u)",
length);
return STATUS_ERR;
}
fputs("FORWARD_TSN_SUPPORTED[]", s);
return STATUS_OK;
}
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static int sctp_unknown_parameter_to_string(
FILE *s,
struct sctp_parameter *parameter,
char **error)
{
u16 i, length;
length = ntohs(parameter->length);
if (length < sizeof(struct sctp_parameter)) {
asprintf(error, "PARAMETER too short (type=0x%04x, length=%u)",
ntohs(parameter->type), length);
return STATUS_ERR;
}
fputs("PARAMETER[", s);
fprintf(s, "type=0x%04x, ", ntohs(parameter->type));
fputs("value=[", s);
for (i = 0; i < length - sizeof(struct sctp_parameter); i++) {
fprintf(s, "%s0x%02x",
i > 0 ? ", " : "",
parameter->value[i]);
}
fputs("]]", s);
return STATUS_OK;
}
static int sctp_parameter_to_string(FILE *s,
struct sctp_parameter *parameter,
char **error)
{
int result;
switch (ntohs(parameter->type)) {
case SCTP_HEARTBEAT_INFORMATION_PARAMETER_TYPE:
result = sctp_heartbeat_information_parameter_to_string(s,
(struct sctp_heartbeat_information_parameter *)parameter, error);
break;
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case SCTP_IPV4_ADDRESS_PARAMETER_TYPE:
result = sctp_ipv4_address_parameter_to_string(s,
(struct sctp_ipv4_address_parameter *)parameter, error);
break;
case SCTP_IPV6_ADDRESS_PARAMETER_TYPE:
result = sctp_ipv6_address_parameter_to_string(s,
(struct sctp_ipv6_address_parameter *)parameter, error);
break;
case SCTP_STATE_COOKIE_PARAMETER_TYPE:
result = sctp_state_cookie_parameter_to_string(s,
(struct sctp_state_cookie_parameter *)parameter, error);
break;
case SCTP_UNRECOGNIZED_PARAMETER_PARAMETER_TYPE:
result = sctp_unrecognized_parameter_parameter_to_string(s,
(struct sctp_unrecognized_parameter_parameter *)parameter,
error);
break;
case SCTP_COOKIE_PRESERVATIVE_PARAMETER_TYPE:
result = sctp_cookie_preservative_parameter_to_string(s,
(struct sctp_cookie_preservative_parameter *)parameter,
error);
break;
case SCTP_HOSTNAME_ADDRESS_PARAMETER_TYPE:
result = sctp_hostname_parameter_to_string(s,
(struct sctp_hostname_address_parameter *)parameter,
error);
break;
case SCTP_SUPPORTED_ADDRESS_TYPES_PARAMETER_TYPE:
result = sctp_supported_address_types_parameter_to_string(s,
(struct sctp_supported_address_types_parameter *)parameter,
error);
break;
case SCTP_OUTGOING_SSN_RESET_REQUEST_PARAMETER_TYPE:
result = sctp_outgoing_ssn_reset_request_parameter_to_string(s,
(struct sctp_outgoing_ssn_reset_request_parameter *)parameter, error);
break;
case SCTP_INCOMING_SSN_RESET_REQUEST_PARAMETER_TYPE:
result = sctp_incoming_ssn_reset_request_parameter_to_string(s,
(struct sctp_incoming_ssn_reset_request_parameter *)parameter, error);
case SCTP_SSN_TSN_RESET_REQUEST_PARAMETER_TYPE:
result = sctp_ssn_tsn_reset_request_parameter_to_string(s,
(struct sctp_ssn_tsn_reset_request_parameter *)parameter, error);
break;
case SCTP_RECONFIG_RESPONSE_PARAMETER_TYPE:
result = sctp_reconfig_response_parameter_to_string(s,
(struct sctp_reconfig_response_parameter *)parameter, error);
break;
case SCTP_ADD_OUTGOING_STREAMS_REQUEST_PARAMETER_TYPE:
result = sctp_add_outgoing_streams_request_parameter_to_string(s,
(struct sctp_add_outgoing_streams_request_parameter *)parameter, error);
break;
case SCTP_ADD_INCOMING_STREAMS_REQUEST_PARAMETER_TYPE:
result = sctp_add_incoming_streams_request_parameter_to_string(s,
(struct sctp_add_incoming_streams_request_parameter *)parameter, error);
break;
case SCTP_ECN_CAPABLE_PARAMETER_TYPE:
result = sctp_ecn_capable_parameter_to_string(s,
(struct sctp_ecn_capable_parameter *)parameter, error);
break;
case SCTP_CHUNKS_PARAMETER_TYPE:
result = sctp_chunks_parameter_to_string(s,
(struct sctp_chunks_parameter *)parameter,
error);
break;
case SCTP_SUPPORTED_EXTENSIONS_PARAMETER_TYPE:
result = sctp_supported_extensions_parameter_to_string(s,
(struct sctp_supported_extensions_parameter *)parameter,
error);
break;
case SCTP_PAD_PARAMETER_TYPE:
result = sctp_pad_parameter_to_string(s,
(struct sctp_pad_parameter *)parameter, error);
break;
case SCTP_ADAPTATION_INDICATION_PARAMETER_TYPE:
result = sctp_adaptation_indication_parameter_to_string(s,
(struct sctp_adaptation_indication_parameter *)parameter, error);
break;
case SCTP_FORWARD_TSN_SUPPORTED_PARAMETER_TYPE:
result = sctp_forward_tsn_supported_parameter_to_string(s,
(struct sctp_forward_tsn_supported_parameter *)parameter, error);
break;
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default:
result = sctp_unknown_parameter_to_string(s, parameter, error);
break;
}
return result;
}
static int sctp_invalid_stream_identifier_cause_to_string(
FILE *s,
struct sctp_invalid_stream_identifier_cause *cause,
char **error)
{
u16 length;
length = ntohs(cause->length);
if (length != sizeof(struct sctp_invalid_stream_identifier_cause)) {
asprintf(error,
"INVALID_STREAM_IDENTIFIER cause invalid (length=%u)",
length);
return STATUS_ERR;
}
fprintf(s, "INVALID_STREAM_IDENTIFIER[sid=%u]", ntohs(cause->sid));
return STATUS_OK;
}
static int sctp_missing_mandatory_parameter_cause_to_string(
FILE *s,
struct sctp_missing_mandatory_parameter_cause *cause,
char **error)
{
u16 length;
u32 i, nr_parameters;
length = ntohs(cause->length);
if (length < sizeof(struct sctp_missing_mandatory_parameter_cause)) {
asprintf(error,
"MISSING_MANDATORY_PARAMETER cause too short (length=%u)",
length);
return STATUS_ERR;
}
nr_parameters = ntohl(cause->nr_parameters);
if (length != sizeof(struct sctp_missing_mandatory_parameter_cause) +
nr_parameters * sizeof(u16)) {
asprintf(error, "MISSING_MANDATORY_PARAMETER inconsistent");
return STATUS_ERR;
}
fputs("MISSING_MANDATORY_PARAMETER[types=[", s);
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for (i = 0; i < nr_parameters; i++) {
if (i > 0)
fputs(", ", s);
switch (ntohs(cause->parameter_type[i])) {
case SCTP_IPV4_ADDRESS_PARAMETER_TYPE:
fputs("IPV4_ADDRESS", s);
break;
case SCTP_IPV6_ADDRESS_PARAMETER_TYPE:
fputs("IPV6_ADDRESS", s);
break;
case SCTP_STATE_COOKIE_PARAMETER_TYPE:
fputs("STATE_COOKIE", s);
break;
case SCTP_UNRECOGNIZED_PARAMETER_PARAMETER_TYPE:
fputs("UNRECOGNIZED_PARAMETER", s);
break;
case SCTP_COOKIE_PRESERVATIVE_PARAMETER_TYPE:
fputs("COOKIE_PRESERVATIVE", s);
break;
case SCTP_HOSTNAME_ADDRESS_PARAMETER_TYPE:
fputs("HOSTNAME_ADDRESS", s);
break;
case SCTP_SUPPORTED_ADDRESS_TYPES_PARAMETER_TYPE:
fputs("SUPPORTED_ADDRESS_TYPES", s);
break;
case SCTP_ECN_CAPABLE_PARAMETER_TYPE:
fputs("ECN_CAPABLE", s);
break;
default:
fprintf(s, "0x%04x", ntohs(cause->parameter_type[i]));
break;
}
}
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return STATUS_OK;
}
static int sctp_stale_cookie_error_cause_to_string(
FILE *s,
struct sctp_stale_cookie_error_cause *cause,
char **error)
{
u16 length;
length = ntohs(cause->length);
if (length != sizeof(struct sctp_stale_cookie_error_cause)) {
asprintf(error, "STALE_COOKIE_ERROR cause invalid (length=%u)",
length);
return STATUS_ERR;
}
fprintf(s, "STALE_COOKIE_ERROR[staleness=%u]", ntohl(cause->staleness));
return STATUS_OK;
}
static int sctp_out_of_resources_cause_to_string(
FILE *s,
struct sctp_out_of_resources_cause *cause,
char **error)
{
u16 length;
length = ntohs(cause->length);
if (length != sizeof(struct sctp_out_of_resources_cause)) {
asprintf(error, "OUT_OF_RESOURCES cause invalid (length=%u)",
length);
return STATUS_ERR;
}
fputs("OUT_OF_RESOURCES[]", s);
return STATUS_OK;
}
static int sctp_unresolvable_address_cause_to_string(
FILE *s,
struct sctp_unresolvable_address_cause *cause,
char **error)
{
u16 cause_length, parameter_length, cause_padding, parameter_padding;
struct sctp_parameter *parameter;
int result;
cause_length = ntohs(cause->length);
if (cause_length < sizeof(struct sctp_unresolvable_address_cause) +
sizeof(struct sctp_parameter)) {
asprintf(error, "UNRESOLVABLE_ADDRESS cause too short");
return STATUS_ERR;
}
cause_padding = cause_length & 0x0003;
if (cause_padding != 0)
cause_padding = 4 - cause_padding;
parameter = (struct sctp_parameter *)cause->parameter;
parameter_length = ntohs(parameter->length);
parameter_padding = parameter_length & 0x0003;
if (parameter_padding != 0)
parameter_padding = 4 - parameter_padding;
if (cause_length + cause_padding !=
sizeof(struct sctp_unresolvable_address_cause) +
parameter_length + parameter_padding) {
asprintf(error, "UNRESOLVABLE_ADDRESS cause inconsistent");
return STATUS_ERR;
}
result = sctp_parameter_to_string(s, parameter, error);
fputc(']', s);
return result;
}
static int sctp_unrecognized_chunk_type_cause_to_string(
FILE *s,
struct sctp_unrecognized_chunk_type_cause *cause,
char **error)
{
u16 cause_length, chunk_length, cause_padding, chunk_padding;
struct sctp_chunk *chunk;
int result;
cause_length = ntohs(cause->length);
if (cause_length < sizeof(struct sctp_unrecognized_chunk_type_cause) +
sizeof(struct sctp_chunk)) {
asprintf(error, "UNRECOGNIZED_CHUNK_TYPE cause too short");
return STATUS_ERR;
}
cause_padding = cause_length & 0x0003;
if (cause_padding != 0)
cause_padding = 4 - cause_padding;
chunk = (struct sctp_chunk *)cause->chunk;
chunk_length = ntohs(chunk->length);
chunk_padding = chunk_length & 0x0003;
if (chunk_padding != 0)
chunk_padding = 4 - chunk_padding;
/* XXX: Do we need to deal with padding here? */
if (cause_length + cause_padding !=
sizeof(struct sctp_unrecognized_chunk_type_cause) +
chunk_length + chunk_padding) {
asprintf(error, "UNRECOGNIZED_CHUNK_TYPE cause inconsistent");
return STATUS_ERR;
}
fputs("UNRECOGNIZED_CHUNK_TYPE[chk=", s);
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result = sctp_chunk_to_string(s, chunk, error);
fputc(']', s);
return result;
}
static int sctp_invalid_mandatory_parameter_cause_to_string(
FILE *s,
struct sctp_invalid_mandatory_parameter_cause *cause,
char **error)
{
u16 length;
length = ntohs(cause->length);
if (length != sizeof(struct sctp_invalid_mandatory_parameter_cause)) {
asprintf(error,
"INVALID_MANDATORY_PARAMETER cause invalid (length=%u)",
length);
return STATUS_ERR;
}
fputs("INVALID_MANDATORY_PARAMETER[]", s);
return STATUS_OK;
}
static int sctp_unrecognized_parameters_cause_to_string(
FILE *s,
struct sctp_unrecognized_parameters_cause *cause,
char **error)
{
u16 length, parameters_length, index;
struct sctp_parameters_iterator iter;
struct sctp_parameter *parameter;
int result = STATUS_OK;