int admin_deleteAccount() {
char buffer[MAX_BUFFER_LEN];
accountnr_t number;
cls();
printf("Eliminar conta\n"
"----------------\n");
// Number:
do {
printf("Numero de conta: ");
gets(buffer);
number = atoi(buffer);
} while (strlen(buffer) > 7 || strlen(buffer) == 0 || number < 1
|| number > 9999999 || !isInteger(buffer));
struct Request r;
char *msg = malloc(sizeof(char) * 10);
char* wrStr = malloc(sizeof(char) * 128);
sprintf(wrStr, "DELETE ACCOUNT %i\n", number);
request_create(&r, getpid(), "ADMIN", wrStr);
request_writeFIFO("/tmp/requests", &r, NULL);
request_waitFIFO(fifoname, NULL, msg);
printf("%s\n", msg);
getchar();
if (strcmp(msg, "OK") == 0)
return 1;
else
return 0;
}
/*
* utilities
*/
static void
test_setup(void)
{
req = request_create();
rsp = response_create();
buf = buf_create();
}
void admin_listAccounts() {
cls();
printf("Listar contas\n"
"----------------\n");
struct Request r;
//TODO OPTIMIZE THIS MALLOC
char msg[500];
char* wrStr = malloc(sizeof(char) * 50);
sprintf(wrStr, "LIST");
request_create(&r, getpid(), "ADMIN", wrStr);
request_writeFIFO("/tmp/requests", &r, NULL);
request_waitFIFO(fifoname, NULL, msg);
if (strcmp(msg, "FAIL") == 0)
printf("Não existem contas!\n");
else {
int i;
for (i = 0; i < sizeof(msg); i++) {
if (msg[i] == '\0')
break;
if (msg[i] == '>')
msg[i] = '\n';
if (msg[i] == '|')
msg[i] = ' ';
}
printf("%s", msg);
}
getchar();
}
/*
* Core function to create a mailbox.
*/
static int
ifcore_create(lua_State *lua)
{
const char *s, *u, *p;
int r;
if (lua_gettop(lua) != 2)
luaL_error(lua, "wrong number of arguments");
luaL_checktype(lua, 1, LUA_TTABLE);
luaL_checktype(lua, 2, LUA_TSTRING);
lua_pushvalue(lua, 1);
if (!(s = get_table_string("server")))
luaL_error(lua, "no mail server specified");
if (!(u = get_table_string("username")))
luaL_error(lua, "no username specified");
p = DISCOVER_PORT(get_table_string("port"), get_table_string("ssl"));
lua_pop(lua, 1);
r = request_create(s, p, u, lua_tostring(lua, 2));
lua_pop(lua, 2);
lua_pushboolean(lua, (r == STATUS_RESPONSE_OK));
return 1;
}
HttpClient *httpclient_create(char *host, char *port){
HttpClient *httpClient;
//request_init();
httpClient = (HttpClient *)malloc(sizeof(HttpClient));
if(httpClient == NULL){
printf("failed to create httpClient instance\n");
return NULL;
}
httpClient->request = request_create(host, port);;
httpClient->response = response_create();
return httpClient;
}
int admin_shutdownServer() {
cls();
printf("Encerrar Servidor\n"
"----------------\n");
struct Request r;
char* msg = malloc(sizeof(char) * 10);
request_create(&r, getpid(), "ADMIN", "SHUTDOWN");
request_writeFIFO("/tmp/requests", &r, NULL);
request_waitFIFO(fifoname, NULL, msg);
printf("%s\n", msg);
if (strcmp(msg, "OK") == 0)
return 1;
else
return 0;
}
/*
* Core function to create a mailbox.
*/
static int
ifcore_create(lua_State *lua)
{
int r;
if (lua_gettop(lua) != 2)
luaL_error(lua, "wrong number of arguments");
luaL_checktype(lua, 1, LUA_TLIGHTUSERDATA);
luaL_checktype(lua, 2, LUA_TSTRING);
while ((r = request_create((session *)(lua_topointer(lua, 1)),
lua_tostring(lua, 2))) == STATUS_NONE);
lua_pop(lua, 2);
if (r == -1)
return 0;
lua_pushboolean(lua, (r == STATUS_OK));
return 1;
}
int eip_pccc_tag_read_start(ab_tag_p tag)
{
int rc = PLCTAG_STATUS_OK;
ab_request_p req;
uint16_t conn_seq_id = (uint16_t)(session_get_new_seq_id(tag->session));;
int overhead;
int data_per_packet;
pccc_req *pccc;
uint8_t *data;
uint8_t *embed_start;
int debug = tag->debug;
pdebug(debug,"Starting");
/* how many packets will we need? How much overhead? */
overhead = sizeof(pccc_resp) + 4 + tag->encoded_name_size; /* MAGIC 4 = fudge */
data_per_packet = MAX_PCCC_PACKET_SIZE - overhead;
if(data_per_packet <= 0) {
pdebug(debug,"Unable to send request. Packet overhead, %d bytes, is too large for packet, %d bytes!", overhead, MAX_EIP_PACKET_SIZE);
tag->status = PLCTAG_ERR_TOO_LONG;
return tag->status;
}
if(data_per_packet < tag->size) {
pdebug(debug,"PCCC requests cannot be fragmented. Too much data requested.");
tag->status = PLCTAG_ERR_TOO_LONG;
return tag->status;
}
if(!tag->reqs) {
tag->reqs = (ab_request_p*)mem_alloc(1 * sizeof(ab_request_p));
tag->max_requests = 1;
tag->num_read_requests = 1;
tag->num_write_requests = 1;
if(!tag->reqs) {
pdebug(debug,"Unable to get memory for request array!");
tag->status = PLCTAG_ERR_NO_MEM;
return tag->status;
}
}
/* get a request buffer */
rc = request_create(&req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to get new request. rc=%d",rc);
tag->status = rc;
return rc;
}
req->debug = tag->debug;
/* point the struct pointers to the buffer*/
pccc = (pccc_req*)(req->data);
/* set up the embedded PCCC packet */
embed_start = (uint8_t*)(&pccc->service_code);
/* Command Routing */
pccc->service_code = AB_EIP_CMD_PCCC_EXECUTE; /* ALWAYS 0x4B, Execute PCCC */
pccc->req_path_size = 2; /* ALWAYS 2, size in words of path, next field */
pccc->req_path[0] = 0x20; /* class */
pccc->req_path[1] = 0x67; /* PCCC Execute */
pccc->req_path[2] = 0x24; /* instance */
pccc->req_path[3] = 0x01; /* instance 1 */
/* PCCC ID */
pccc->request_id_size = 7; /* ALWAYS 7 */
pccc->vendor_id = h2le16(AB_EIP_VENDOR_ID); /* Our CIP Vendor */
pccc->vendor_serial_number = h2le32(AB_EIP_VENDOR_SN); /* our unique serial number */
/* fill in the PCCC command */
pccc->pccc_command = AB_EIP_PCCC_TYPED_CMD;
pccc->pccc_status = 0; /* STS 0 in request */
pccc->pccc_seq_num = h2le16(conn_seq_id); /* FIXME - get sequence ID from session? */
pccc->pccc_function = AB_EIP_PCCC_TYPED_READ_FUNC;
pccc->pccc_transfer_size = h2le16(tag->elem_count); /* This is not in the docs, but it is in the data. */
/* point to the end of the struct */
data = ((uint8_t *)pccc) + sizeof(pccc_req);
/* copy LAA tag name into the request */
mem_copy(data,tag->encoded_name,tag->encoded_name_size);
data += tag->encoded_name_size;
/* we need the count twice? */
*((uint16_t*)data) = h2le16(tag->elem_count); /* FIXME - bytes or INTs? */
data += sizeof(uint16_t);
/*
* after the embedded packet, we need to tell the message router
* how to get to the target device.
*/
/* encap fields */
pccc->encap_command = h2le16(AB_EIP_READ_RR_DATA); /* ALWAYS 0x0070 Unconnected Send*/
/* router timeout */
pccc->router_timeout = h2le16(1); /* one second timeout, enough? */
/* Common Packet Format fields for unconnected send. */
pccc->cpf_item_count = h2le16(2); /* ALWAYS 2 */
pccc->cpf_nai_item_type = h2le16(AB_EIP_ITEM_NAI); /* ALWAYS 0 */
pccc->cpf_nai_item_length = h2le16(0); /* ALWAYS 0 */
pccc->cpf_udi_item_type = h2le16(AB_EIP_ITEM_UDI); /* ALWAYS 0x00B2 - Unconnected Data Item */
pccc->cpf_udi_item_length = h2le16(data - embed_start); /* REQ: fill in with length of remaining data. */
/* set the size of the request */
req->request_size = data - (req->data);
/* mark it as ready to send */
req->send_request = 1;
/* add the request to the session's list. */
rc = request_add(tag->session, req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to lock add request to session! rc=%d",rc);
request_destroy(&req);
tag->status = rc;
return rc;
}
/* save the request for later */
tag->reqs[0] = req;
req = NULL;
tag->read_in_progress = 1;
tag->status = PLCTAG_STATUS_PENDING;
return PLCTAG_STATUS_PENDING;
}
int eip_pccc_tag_write_start(ab_tag_p tag)
{
int rc = PLCTAG_STATUS_OK;
pccc_req *pccc;
uint8_t *data;
uint8_t element_def[16];
int element_def_size;
uint8_t array_def[16];
int array_def_size;
int pccc_data_type;
uint16_t conn_seq_id = (uint16_t)(session_get_new_seq_id(tag->session));;
ab_request_p req = NULL;
int debug = tag->debug;
uint8_t *embed_start;
int overhead, data_per_packet;
pdebug(debug,"Starting.");
/* how many packets will we need? How much overhead? */
overhead = sizeof(pccc_resp) + 4 + tag->encoded_name_size; /* MAGIC 4 = fudge */
data_per_packet = MAX_PCCC_PACKET_SIZE - overhead;
if(data_per_packet <= 0) {
pdebug(debug,"Unable to send request. Packet overhead, %d bytes, is too large for packet, %d bytes!", overhead, MAX_EIP_PACKET_SIZE);
tag->status = PLCTAG_ERR_TOO_LONG;
return tag->status;
}
if(data_per_packet < tag->size) {
pdebug(debug,"PCCC requests cannot be fragmented. Too much data requested.");
tag->status = PLCTAG_ERR_TOO_LONG;
return tag->status;
}
/* set up the requests */
if(!tag->reqs) {
tag->reqs = (ab_request_p*)mem_alloc(1 * sizeof(ab_request_p));
tag->max_requests = 1;
tag->num_read_requests = 1;
tag->num_write_requests = 1;
if(!tag->reqs) {
pdebug(debug,"Unable to get memory for request array!");
tag->status = PLCTAG_ERR_NO_MEM;
return tag->status;
}
}
/* get a request buffer */
rc = request_create(&req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to get new request. rc=%d",rc);
tag->status = rc;
return rc;
}
req->debug = tag->debug;
pccc = (pccc_req*)(req->data);
/* set up the embedded PCCC packet */
embed_start = (uint8_t*)(&pccc->service_code);
/* point to the end of the struct */
data = (req->data) + sizeof(pccc_req);
/* copy laa into the request */
mem_copy(data,tag->encoded_name,tag->encoded_name_size);
data += tag->encoded_name_size;
/* What type and size do we have? */
if(tag->elem_size != 2 && tag->elem_size != 4) {
pdebug(debug,"Unsupported data type size: %d",tag->elem_size);
request_destroy(&req);
tag->status = PLCTAG_ERR_NOT_ALLOWED;
return PLCTAG_ERR_NOT_ALLOWED;
}
if(tag->elem_size == 4)
pccc_data_type = AB_PCCC_DATA_REAL;
else
pccc_data_type = AB_PCCC_DATA_INT;
/* generate the data type/data size fields, first the element part so that
* we can get the size for the array part.
*/
if(!(element_def_size = pccc_encode_dt_byte(element_def,sizeof(element_def),pccc_data_type,tag->elem_size))) {
pdebug(debug,"Unable to encode PCCC request array element data type and size fields!");
request_destroy(&req);
tag->status = PLCTAG_ERR_ENCODE;
return PLCTAG_ERR_ENCODE;
}
if(!(array_def_size = pccc_encode_dt_byte(array_def,sizeof(array_def),AB_PCCC_DATA_ARRAY,element_def_size + tag->size))) {
pdebug(debug,"Unable to encode PCCC request data type and size fields!");
request_destroy(&req);
tag->status = PLCTAG_ERR_ENCODE;
return PLCTAG_ERR_ENCODE;
}
/* copy the array data first. */
mem_copy(data,array_def,array_def_size);
data += array_def_size;
/* copy the element data */
mem_copy(data,element_def,element_def_size);
data += element_def_size;
/* now copy the data to write */
mem_copy(data,tag->data,tag->size);
data += tag->size;
/* now fill in the rest of the structure. */
/* encap fields */
pccc->encap_command = h2le16(AB_EIP_READ_RR_DATA); /* ALWAYS 0x0070 Unconnected Send*/
/* router timeout */
pccc->router_timeout = h2le16(1); /* one second timeout, enough? */
/* Common Packet Format fields for unconnected send. */
pccc->cpf_item_count = h2le16(2); /* ALWAYS 2 */
pccc->cpf_nai_item_type = h2le16(AB_EIP_ITEM_NAI); /* ALWAYS 0 */
pccc->cpf_nai_item_length = h2le16(0); /* ALWAYS 0 */
pccc->cpf_udi_item_type = h2le16(AB_EIP_ITEM_UDI); /* ALWAYS 0x00B2 - Unconnected Data Item */
pccc->cpf_udi_item_length = h2le16(data - embed_start); /* REQ: fill in with length of remaining data. */
/* Command Routing */
pccc->service_code = AB_EIP_CMD_PCCC_EXECUTE; /* ALWAYS 0x4B, Execute PCCC */
pccc->req_path_size = 2; /* ALWAYS 2, size in words of path, next field */
pccc->req_path[0] = 0x20; /* class */
pccc->req_path[1] = 0x67; /* PCCC Execute */
pccc->req_path[2] = 0x24; /* instance */
pccc->req_path[3] = 0x01; /* instance 1 */
/* PCCC ID */
pccc->request_id_size = 7; /* ALWAYS 7 */
pccc->vendor_id = h2le16(AB_EIP_VENDOR_ID); /* Our CIP Vendor */
pccc->vendor_serial_number = h2le32(AB_EIP_VENDOR_SN); /* our unique serial number */
/* PCCC Command */
pccc->pccc_command = AB_EIP_PCCC_TYPED_CMD;
pccc->pccc_status = 0; /* STS 0 in request */
//pccc->pccc_seq_num = h2le16(tag->connection->conn_seq_num);
pccc->pccc_function = AB_EIP_PCCC_TYPED_WRITE_FUNC;
/* FIXME - what should be the count here? It is bytes, 16-bit
* words or something else?
*
* Seems to be the number of elements??
*/
pccc->pccc_transfer_size = h2le16(tag->elem_count); /* This is not in the docs, but it is in the data. */
/* get ready to add the request to the queue for this session */
req->request_size = data - (req->data);
req->send_request = 1;
req->conn_seq = conn_seq_id;
/* add the request to the session's list. */
rc = request_add(tag->session, req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to lock add request to session! rc=%d",rc);
request_destroy(&req);
tag->status = rc;
return rc;
}
/* save the request for later */
tag->reqs[0] = req;
/* the write is now pending */
tag->write_in_progress = 1;
tag->status = PLCTAG_STATUS_PENDING;
return PLCTAG_STATUS_PENDING;
}
int admin_createAccount() {
// Variables
char buffer[MAX_BUFFER_LEN];
char user[MAX_USER_LEN + 1];
char pin[MAX_PIN_LEN + 1];
double balance;
accountnr_t number;
// Ask input
cls();
printf("Criar conta\n"
"----------------\n");
// Number:
do {
printf("Numero: ");
gets(buffer);
number = atoi(buffer);
} while (strlen(buffer) > 7 || strlen(buffer) == 0 || number < 1
|| number > 9999999 || !isInteger(buffer));
// User
do {
printf("Utilizador: ");
gets(buffer);
} while (strlen(buffer) > 20 || strlen(buffer) < 3);
strncpy(user, buffer, 20);
user[20] = '\0';
// PIN
do {
printf("PIN(size=4): ");
gets(buffer);
} while (strlen(buffer) != 4 || (strchr(buffer, ' ')) != NULL); //NO SPACES IN PIN
strncpy(pin, buffer, 4);
pin[4] = '\0';
// Initial balance
do {
printf("Balance: ");
gets(buffer);
balance = atof(buffer);
} while (balance < 0 || !isFloat(buffer));
struct Account a;
if (!account_create(&a, number, user, pin, balance)) {
printf("Dados da conta invalidos!\n");
return 1;
} else {
printf("echo: %s\n", account_toString(&a));
struct Request r;
char *msg = malloc(sizeof(char) * 10);
char* wrStr = malloc(sizeof(char) * 128);
sprintf(wrStr, "CREATE ACCOUNT %i %s|%s %f\n", number, user, pin,
balance);
request_create(&r, getpid(), "ADMIN", wrStr);
request_writeFIFO("/tmp/requests", &r, NULL);
request_waitFIFO(fifoname, NULL, msg);
printf("%s\n", msg);
getchar();
if (strcmp(msg, "OK") == 0)
return 1;
else
return 0;
}
}
int request_snmpEnableAuthTraps(char *error_label)
{
static int my_ip_address_initialized = False;
static IPAddress my_ip_address;
SNMP_pdu *request;
SNMP_pdu *response;
SNMP_variable *variable;
int snmpEnableAuthTraps;
struct timeval timeout;
timeout.tv_sec = 5;
timeout.tv_usec = 0;
error_label[0] = '\0';
if(my_ip_address_initialized == False)
{
if(get_my_ip_address(&my_ip_address, error_label))
{
return -1;
}
my_ip_address_initialized = True;
}
request = request_create("public", GET_REQ_MSG, error_label);
if(request == NULL)
{
return -1;
}
if(snmp_pdu_append_null_variable(request, &snmpEnableAuthTraps_name, error_label) == NULL)
{
snmp_pdu_free(request);
return -1;
}
response = request_send_to_port_time_out_blocking(&my_ip_address, \
SNMP_PORT, &timeout, request, error_label);
if(response == NULL)
{
snmp_pdu_free(request);
return -1;
}
snmp_pdu_free(request);
if(response->error_status)
{
sprintf(error_label, "%s",
error_status_string(response->error_status));
snmp_pdu_free(response);
return -1;
}
variable = response->first_variable;
if(variable->next_variable
|| SSAOidCmp(&(variable->name), &snmpEnableAuthTraps_name)
|| (variable->type != INTEGER)
|| (variable->val.integer == NULL)
|| (variable->val_len != sizeof(int32_t)) )
{
sprintf(error_label, ERR_MSG_BAD_RESPONSE);
snmp_pdu_free(response);
return -1;
}
snmpEnableAuthTraps = *(variable->val.integer);
snmp_pdu_free(response);
if(trace_level > 0)
{
trace("snmpAuthTraps: %s\n\n",
(snmpEnableAuthTraps == 1)? "enabled(1)": "disabled(2)");
}
switch(snmpEnableAuthTraps)
{
case 1: /* enabled(1) */
return TRUE;
case 2: /* disable(2) */
return FALSE;
default:
sprintf(error_label, ERR_MSG_BAD_VALUE);
return -1;
}
}
int32_t request_sysUpTime(char *error_label, char *community_name)
{
static int my_ip_address_initialized = False;
static IPAddress my_ip_address;
SNMP_pdu *request;
SNMP_pdu *response;
SNMP_variable *variable;
static int32_t sysUpTime = 0;
static clock_t last = 0;
clock_t now;
struct tms buffer;
error_label[0] = '\0';
now = times(&buffer);
if( (last == 0) || ((now - last) > 360000) ) /* 1 hour */
{
if(my_ip_address_initialized == False)
{
if(get_my_ip_address(&my_ip_address, error_label))
{
return 0;
}
my_ip_address_initialized = True;
}
if(community_name == NULL)
request = request_create("public", GET_REQ_MSG, error_label);
else
request = request_create(community_name, GET_REQ_MSG, error_label);
if(request == NULL)
{
return 0;
}
if(snmp_pdu_append_null_variable(request, &sysUptime_instance, error_label) == NULL)
{
snmp_pdu_free(request);
return 0;
}
response = request_send_blocking(&my_ip_address, request, error_label);
if(response == NULL)
{
snmp_pdu_free(request);
return 0;
}
snmp_pdu_free(request);
if(response->error_status)
{
sprintf(error_label, "%s",
error_status_string(response->error_status));
snmp_pdu_free(response);
return 0;
}
variable = response->first_variable;
if(variable->next_variable
|| SSAOidCmp(&(variable->name), &sysUptime_instance)
|| (variable->type != TIMETICKS)
|| (variable->val.integer == NULL)
|| (variable->val_len != sizeof(int32_t)) )
{
sprintf(error_label, ERR_MSG_BAD_RESPONSE);
snmp_pdu_free(response);
return 0;
}
sysUpTime = *(variable->val.integer);
last = now;
snmp_pdu_free(response);
if(trace_level > 0)
{
trace("sysUpTime: %d\n\n", sysUpTime);
}
return sysUpTime;
}
/* LINTED */
return (sysUpTime + (int32_t)(now - last));
}
int build_write_request(ab_tag_p tag, int slot, int byte_offset)
{
int rc = PLCTAG_STATUS_OK;
int debug = tag->debug;
eip_cip_uc_req *cip;
uint8_t *data;
uint8_t *embed_start, *embed_end;
ab_request_p req = NULL;
pdebug(debug,"Starting.");
/* get a request buffer */
rc = request_create(&req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to get new request. rc=%d",rc);
tag->status = rc;
return rc;
}
/* set debug flag on the request too */
req->debug = tag->debug;
cip = (eip_cip_uc_req*)(req->data);
/* point to the end of the struct */
data = (req->data) + sizeof(eip_cip_uc_req);
/*
* set up the embedded CIP read packet
* The format is:
*
* uint8_t cmd
* LLA formatted name
* data type to write
* uint16_t # of elements to write
* data to write
*/
embed_start = data;
/*
* set up the CIP Read request type.
* Different if more than one request.
*
* This handles a bug where attempting fragmented requests
* does not appear to work with a single boolean.
*/
*data = (tag->num_write_requests > 1) ? AB_EIP_CMD_CIP_WRITE_FRAG : AB_EIP_CMD_CIP_WRITE;
data++;
/* copy the tag name into the request */
mem_copy(data,tag->encoded_name,tag->encoded_name_size);
data += tag->encoded_name_size;
/* copy encoded type info */
if(tag->encoded_type_info_size) {
mem_copy(data,tag->encoded_type_info,tag->encoded_type_info_size);
data += tag->encoded_type_info_size;
} else {
tag->status = PLCTAG_ERR_UNSUPPORTED;
return tag->status;
}
/* copy the item count, little endian */
*((uint16_t*)data) = h2le16(tag->elem_count);
data += 2;
if(tag->num_write_requests > 1) {
/* put in the byte offset */
*((uint32_t*)data) = h2le32(byte_offset);
data += 4;
}
/* now copy the data to write */
mem_copy(data, tag->data + byte_offset, tag->write_req_sizes[slot]);
data += tag->write_req_sizes[slot];
/* need to pad data to multiple of 16-bits */
if(tag->write_req_sizes[slot] & 0x01) {
*data = 0;
data++;
}
/* mark the end of the embedded packet */
embed_end = data;
/*
* after the embedded packet, we need to tell the message router
* how to get to the target device.
*/
/* Now copy in the routing information for the embedded message */
*data = (tag->conn_path_size)/2; /* in 16-bit words */
data++;
*data = 0;
data++;
mem_copy(data,tag->conn_path, tag->conn_path_size);
data += tag->conn_path_size;
/* now fill in the rest of the structure. */
/* encap fields */
cip->encap_command = h2le16(AB_EIP_READ_RR_DATA); /* ALWAYS 0x006F Unconnected Send*/
/* router timeout */
cip->router_timeout = h2le16(1); /* one second timeout, enough? */
/* Common Packet Format fields for unconnected send. */
cip->cpf_item_count = h2le16(2); /* ALWAYS 2 */
cip->cpf_nai_item_type = h2le16(AB_EIP_ITEM_NAI); /* ALWAYS 0 */
cip->cpf_nai_item_length = h2le16(0); /* ALWAYS 0 */
cip->cpf_udi_item_type = h2le16(AB_EIP_ITEM_UDI); /* ALWAYS 0x00B2 - Unconnected Data Item */
cip->cpf_udi_item_length = h2le16(data - (uint8_t*)(&(cip->cm_service_code))); /* REQ: fill in with length of remaining data. */
/* CM Service Request - Connection Manager */
cip->cm_service_code = AB_EIP_CMD_UNCONNECTED_SEND; /* 0x52 Unconnected Send */
cip->cm_req_path_size = 2; /* 2, size in 16-bit words of path, next field */
cip->cm_req_path[0] = 0x20; /* class */
cip->cm_req_path[1] = 0x06; /* Connection Manager */
cip->cm_req_path[2] = 0x24; /* instance */
cip->cm_req_path[3] = 0x01; /* instance 1 */
/* Unconnected send needs timeout information */
cip->secs_per_tick = AB_EIP_SECS_PER_TICK; /* seconds per tick */
cip->timeout_ticks = AB_EIP_TIMEOUT_TICKS; /* timeout = srd_secs_per_tick * src_timeout_ticks */
/* size of embedded packet */
cip->uc_cmd_length = h2le16(embed_end - embed_start);
/* set the size of the request */
req->request_size = data - (req->data);
/* mark it as ready to send */
req->send_request = 1;
/* add the request to the session's list. */
rc = request_add(tag->session, req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to lock add request to session! rc=%d",rc);
plc_tag_abort((plc_tag)tag);
request_destroy(&req);
tag->status = rc;
return rc;
}
/* save the request for later */
tag->reqs[slot] = req;
pdebug(debug,"Done");
return PLCTAG_STATUS_OK;
}
int build_read_request(ab_tag_p tag, int slot, int byte_offset)
{
eip_cip_uc_req *cip;
uint8_t *data;
uint8_t *embed_start, *embed_end;
ab_request_p req = NULL;
int debug = tag->debug;
int rc;
pdebug(debug,"Starting.");
/* get a request buffer */
rc = request_create(&req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to get new request. rc=%d",rc);
tag->status = rc;
return rc;
}
req->debug = debug;
/* point the request struct at the buffer */
cip = (eip_cip_uc_req*)(req->data);
/* point to the end of the struct */
data = (req->data) + sizeof(eip_cip_uc_req);
/*
* set up the embedded CIP read packet
* The format is:
*
* uint8_t cmd
* LLA formatted name
* uint16_t # of elements to read
*/
embed_start = data;
/* set up the CIP Read request */
*data = AB_EIP_CMD_CIP_READ_FRAG;
data++;
/* copy the tag name into the request */
mem_copy(data,tag->encoded_name,tag->encoded_name_size);
data += tag->encoded_name_size;
/* add the count of elements to read. */
*((uint16_t*)data) = h2le16(tag->elem_count);
data += sizeof(uint16_t);
/* add the byte offset for this request */
*((uint32_t*)data) = h2le32(byte_offset);
data += sizeof(uint32_t);
/* mark the end of the embedded packet */
embed_end = data;
/* Now copy in the routing information for the embedded message */
/*
* routing information. Format:
*
* uint8_t path_size in 16-bit words
* uint8_t reserved/pad (zero)
* uint8_t[...] path (padded to even number of bytes)
*/
*data = (tag->conn_path_size)/2; /* in 16-bit words */
data++;
*data = 0; /* reserved/pad */
data++;
mem_copy(data, tag->conn_path, tag->conn_path_size);
data += tag->conn_path_size;
/* now we go back and fill in the fields of the static part */
/* encap fields */
cip->encap_command = h2le16(AB_EIP_READ_RR_DATA); /* ALWAYS 0x0070 Unconnected Send*/
/* router timeout */
cip->router_timeout = h2le16(1); /* one second timeout, enough? */
/* Common Packet Format fields for unconnected send. */
cip->cpf_item_count = h2le16(2); /* ALWAYS 2 */
cip->cpf_nai_item_type = h2le16(AB_EIP_ITEM_NAI); /* ALWAYS 0 */
cip->cpf_nai_item_length = h2le16(0); /* ALWAYS 0 */
cip->cpf_udi_item_type = h2le16(AB_EIP_ITEM_UDI); /* ALWAYS 0x00B2 - Unconnected Data Item */
cip->cpf_udi_item_length = h2le16(data - (uint8_t*)(&(cip->cm_service_code))); /* REQ: fill in with length of remaining data. */
/* CM Service Request - Connection Manager */
cip->cm_service_code = AB_EIP_CMD_UNCONNECTED_SEND; /* 0x52 Unconnected Send */
cip->cm_req_path_size = 2; /* 2, size in 16-bit words of path, next field */
cip->cm_req_path[0] = 0x20; /* class */
cip->cm_req_path[1] = 0x06; /* Connection Manager */
cip->cm_req_path[2] = 0x24; /* instance */
cip->cm_req_path[3] = 0x01; /* instance 1 */
/* Unconnected send needs timeout information */
cip->secs_per_tick = AB_EIP_SECS_PER_TICK; /* seconds per tick */
cip->timeout_ticks = AB_EIP_TIMEOUT_TICKS; /* timeout = src_secs_per_tick * src_timeout_ticks */
/* size of embedded packet */
cip->uc_cmd_length = h2le16(embed_end - embed_start);
/* set the size of the request */
req->request_size = data - (req->data);
/* mark it as ready to send */
req->send_request = 1;
/* add the request to the session's list. */
rc = request_add(tag->session, req);
if(rc != PLCTAG_STATUS_OK) {
pdebug(debug,"Unable to add request to session! rc=%d",rc);
request_destroy(&req);
tag->status = rc;
return rc;
}
/* save the request for later */
tag->reqs[slot] = req;
pdebug(debug,"Done");
return PLCTAG_STATUS_OK;
}