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#include "vxi11.h"
#include "globals.h"
#include <stdio.h>
#include <rpc/rpc.h>
#include <stdbool.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define DEBUG
#ifdef DEBUG
#include <stdlib.h>
#endif
#define SIZEOFARRAY(a) (sizeof(a) / sizeof(a[0]))
#define ERR_SYNTAXERROR 1
#define ERR_DEVICENOTACCESSIBLE 3
#define ERR_INVALIDLINKINDENTIFIER 4
#define ERR_PARAMETERERROR 5
#define ERR_CHANNELNOTESTABLISHED 6
#define ERR_OPERATIONNOTSUPPORTED 8
#define ERR_OUTOFRESOURCES 9
#define ERR_DEVICELOCKEDBYANOTHERLINK 11
#define ERR_NOLOCKHELDBYTHISLINK 12
#define ERR_IOTIMEOUT 15
#define ERR_IOERROR 17
#define ERR_INVALIDADDRESS 21
#define ERR_ABORT 23
#define ERR_CHANNELALREADYESTABLISHED 29
static CLIENT* intclient = NULL;
typedef struct {
} ActiveLink;
static ActiveLink* links[MAX_SESSIONS] = { NULL };
static bool isValidLink(int linkid) {
return links[linkid] != NULL;
}
static bool isLocked() {
return globals.VxiLocks.locked_network_server != NO_SERVER_LOCKED;
}
static bool haveLock(int lid) {
return globals.VxiLocks.locked_network_server == lid;
}
static bool waitForLock(long timeout) {
return false;
}
static void lock(int lid) {
globals.VxiLocks.locked_network_server = lid;
}
static void unlock() {
globals.VxiLocks.locked_network_server = NO_SERVER_LOCKED;
}
Device_Error *
device_abort_1_svc(Device_Link *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_abort_1_svc()\n");
#endif
if (!isValidLink(*argp))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.error = 0;
}
return &result;
}
Create_LinkResp *
create_link_1_svc(Create_LinkParms *argp, struct svc_req *rqstp) {
static Create_LinkResp result;
#ifdef DEBUG
printf("create_link_1_svc()\n");
#endif
if (globals.Remote.vxi_connections == MAX_SESSIONS) {
result.error = ERR_OUTOFRESOURCES;
}
else {
if (argp->lockDevice && isLocked()) {
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
}
else {
ActiveLink* link = malloc(sizeof(ActiveLink));
if (link == NULL) {
result.error = ERR_OUTOFRESOURCES;
}
else {
int linkid;
for (linkid = 0; linkid < SIZEOFARRAY(links); linkid++) {
if (links[linkid] == NULL) {
links[linkid] = link;
break;
}
}
struct sockaddr_in sin;
socklen_t len = sizeof(sin);
getsockname(rqstp->rq_xprt->xp_sock, (struct sockaddr *) &sin, &len);
result.error = 0;
result.abortPort = ntohs(sin.sin_port);
result.lid = linkid;
globals.Remote.vxi_connections++;
}
}
}
return &result;
}
Device_WriteResp *
device_write_1_svc(Device_WriteParms *argp, struct svc_req *rqstp) {
static Device_WriteResp result;
#ifdef DEBUG
printf("device_write_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (isLocked(argp->lid) && !haveLock(argp->lid))
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
else {
printf("%s\n", argp->data.data_val);
//result.size = argp->data.data_len;
result.size = 1;
result.error = 0;
}
}
return &result;
}
Device_ReadResp *
device_read_1_svc(Device_ReadParms *argp, struct svc_req *rqstp) {
static Device_ReadResp result;
#ifdef DEBUG
printf("device_read_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (isLocked(argp->lid) && !haveLock(argp->lid))
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
else {
result.data.data_val = "HELLO!";
result.data.data_len = 7;
result.error = 0;
result.reason = 0x4;
}
}
return &result;
}
Device_ReadStbResp *
device_readstb_1_svc(Device_GenericParms *argp, struct svc_req *rqstp) {
static Device_ReadStbResp result;
#ifdef DEBUG
printf("device_readstb_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.error = 0;
result.stb = 0;
}
return &result;
}
Device_Error *
device_trigger_1_svc(Device_GenericParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_trigger_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.error = 0;
}
return &result;
}
Device_Error *
device_clear_1_svc(Device_GenericParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_clear_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.error = 0;
}
return &result;
}
Device_Error *
device_remote_1_svc(Device_GenericParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_remote_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (isLocked() && !haveLock(argp->lid))
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
else
result.error = 0;
}
return &result;
}
Device_Error *
device_local_1_svc(Device_GenericParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_local_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (isLocked() && !haveLock(argp->lid))
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
else
result.error = 0;
}
return &result;
}
Device_Error *
device_lock_1_svc(Device_LockParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_lock_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (isLocked(argp->lid)) {
result.error = ERR_DEVICELOCKEDBYANOTHERLINK;
if (haveLock(argp->lid)) {
// maybe do something here to warn about a device trying to lock multiple times?
}
}
else {
lock(argp->lid);
result.error = 0;
}
}
return &result;
}
Device_Error *
device_unlock_1_svc(Device_Link *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_unlock_1_svc()\n");
#endif
if (!isValidLink(*argp))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
if (!isLocked(*argp) || !haveLock(*argp))
result.error = ERR_NOLOCKHELDBYTHISLINK;
else {
result.error = 0;
unlock();
}
}
return &result;
}
Device_Error *
device_enable_srq_1_svc(Device_EnableSrqParms *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("device_enable_srq_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.error = 0;
}
return &result;
}
Device_DocmdResp *
device_docmd_1_svc(Device_DocmdParms *argp, struct svc_req *rqstp) {
static Device_DocmdResp result;
#ifdef DEBUG
printf("device_docmd_1_svc()\n");
#endif
if (!isValidLink(argp->lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
result.data_out.data_out_len = 0;
result.data_out.data_out_val = NULL;
result.error = ERR_OPERATIONNOTSUPPORTED;
}
return &result;
}
Device_Error *
destroy_link_1_svc(Device_Link *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("destroy_link_1_svc()\n");
#endif
int lid = *argp;
if (!isValidLink(lid))
result.error = ERR_INVALIDLINKINDENTIFIER;
else {
#ifdef DEBUG
printf("link %d destroyed\n", lid);
#endif
free(links[lid]);
links[lid] = NULL;
}
globals.Remote.vxi_connections--;
return &result;
}
Device_Error *
create_intr_chan_1_svc(Device_RemoteFunc *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("create_intr_chan_1_svc()\n");
char clientaddressstring[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &argp->hostAddr, clientaddressstring, sizeof(clientaddressstring));
printf("Client %s is asking for an interrupt connection on port %u\n", clientaddressstring, argp->hostPort);
#endif
if (argp->progFamily != DEVICE_TCP || argp->progNum != DEVICE_INTR || argp->progVers != DEVICE_INTR_VERSION)
result.error = ERR_OPERATIONNOTSUPPORTED;
else if (intclient != NULL) {
result.error = ERR_CHANNELALREADYESTABLISHED;
}
else {
struct sockaddr_in clientaddr;
clientaddr.sin_family = AF_INET;
clientaddr.sin_port = htons(argp->hostPort);
clientaddr.sin_addr.s_addr = argp->hostAddr;
int sock = RPC_ANYSOCK;
CLIENT* clnt = clnttcp_create(&clientaddr, DEVICE_INTR, DEVICE_INTR_VERSION, &sock, 0, 0);
if (clnt == NULL) {
#ifdef DEBUG
printf("Couldn't create interrupt channel client\n");
#endif
result.error = ERR_CHANNELNOTESTABLISHED;
}
else {
intclient = clnt;
result.error = 0;
}
}
return &result;
}
Device_Error *
destroy_intr_chan_1_svc(void *argp, struct svc_req *rqstp) {
static Device_Error result;
#ifdef DEBUG
printf("destroy_intr_chan_1_svc()\n");
#endif
if (intclient == NULL) {
result.error = ERR_CHANNELNOTESTABLISHED;
}
else {
intclient = NULL;
result.error = 0;
}
return &result;
}
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