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netbios: fix response length of node status response

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This commit is contained in:
goldsimon 2018-04-18 07:28:41 +02:00
parent 66800925cf
commit f65911a84b
1 changed files with 14 additions and 7 deletions
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21
src/apps/netbiosns/netbiosns.c
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@ -156,6 +156,7 @@ struct netbios_answer {
PACK_STRUCT_FIELD(u16_t cls);
PACK_STRUCT_FIELD(u32_t ttl);
PACK_STRUCT_FIELD(u16_t data_length);
#define OFFSETOF_STRUCT_NETBIOS_ANSWER_NUMBER_OF_NAMES 56
/** number of names */
PACK_STRUCT_FLD_8(u8_t number_of_names);
/** node name */
@ -168,7 +169,7 @@ struct netbios_answer {
PACK_STRUCT_FLD_8(u8_t jumpers);
/** Test result */
PACK_STRUCT_FLD_8(u8_t test_result);
/** Test result */
/** Version number */
PACK_STRUCT_FIELD(u16_t version_number);
/** Period of statistics */
PACK_STRUCT_FIELD(u16_t period_of_statistics);
@ -181,15 +182,19 @@ struct netbios_answer {
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_send_aborts);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_good_sends);
PACK_STRUCT_FIELD(u32_t number_of_good_sends);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_good_receives);
PACK_STRUCT_FIELD(u32_t number_of_good_receives);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_retransmits);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_no_resource_condition);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_command_blocks);
PACK_STRUCT_FIELD(u16_t number_of_free_command_blocks);
/** Statistics */
PACK_STRUCT_FIELD(u16_t total_number_of_command_blocks);
/** Statistics */
PACK_STRUCT_FIELD(u16_t max_total_number_of_command_blocks);
/** Statistics */
PACK_STRUCT_FIELD(u16_t number_of_pending_sessions);
/** Statistics */
@ -410,11 +415,13 @@ netbiosns_recv(void *arg, struct udp_pcb *upcb, struct pbuf *p, const ip_addr_t
resp->packet_type = PP_HTONS(0x21);
/* Internet name */
resp->cls = PP_HTONS(1);
/* resp->ttl = PP_HTONL(0); done by memset() */
resp->data_length = PP_HTONS(4 + NETBIOS_NAME_LEN);
/* resp->ttl = PP_HTONL(0); done by memset() */
resp->data_length = PP_HTONS(sizeof(struct netbios_answer) - offsetof(struct netbios_answer, number_of_names));
resp->number_of_names = 1;
memset(resp->answer_name, 0x20, NETBIOS_NAME_LEN);
/* make windows see us as workstation, not as a server */
memset(resp->answer_name, 0x20, NETBIOS_NAME_LEN - 1);
/* strlen is checked to be < NETBIOS_NAME_LEN during initialization */
MEMCPY(resp->answer_name, NETBIOS_LOCAL_NAME, strlen(NETBIOS_LOCAL_NAME));
/* b-node, unique, active */