#include "global.h"
/*
* rpc_srv_blobCreate() Create map blob to memory region and return object
* @srv = RPC Server instance
* @len = BLOB length object
* return: NULL error or !=NULL allocated BLOB object
*/
inline rpc_blob_t *
rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len)
{
rpc_blob_t *blob = NULL;
char szFName[MAXPATHLEN];
int f;
memset(szFName, 0, MAXPATHLEN);
snprintf(szFName, MAXPATHLEN, "%s/BLOB-XXXXXXXX", srv->srv_blob.dir);
f = mkstemp(szFName);
if (f == -1) {
LOGERR;
return NULL;
}
if (lseek(f, len - 1, SEEK_SET) == -1) {
LOGERR;
close(f);
unlink(szFName);
return NULL;
} else
write(f, "", 1);
blob = malloc(sizeof(rpc_blob_t));
if (!blob) {
LOGERR;
close(f);
unlink(szFName);
return NULL;
}
blob->blob_data = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, f, 0);
if (blob->blob_data == MAP_FAILED) {
LOGERR;
free(blob);
close(f);
unlink(szFName);
return NULL;
} else
close(f);
blob->blob_len = len;
blob->blob_var = strtol(strrchr(szFName, '-') + 1, NULL, 16);
return blob;
}
/*
* rpc_srv_blobMap() Map blob to memory region
* @srv = RPC Server instance
* @blob = Map to this BLOB element
* return: -1 error or 0 ok
*/
inline int
rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob)
{
int f;
struct stat sb;
char szFName[MAXPATHLEN];
if (!blob) {
rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n");
return -1;
}
memset(szFName, 0, MAXPATHLEN);
snprintf(szFName, MAXPATHLEN, BLOB_FILE, srv->srv_blob.dir, blob->blob_var);
f = open(szFName, O_RDONLY);
if (f == -1) {
LOGERR;
return -1;
}
if (fstat(f, &sb) == -1) {
LOGERR;
close(f);
return -1;
}
blob->blob_data = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, f, 0);
if (blob->blob_data == MAP_FAILED) {
LOGERR;
close(f);
blob->blob_data = NULL;
return -1;
} else {
blob->blob_len = sb.st_size;
close(f);
madvise(blob->blob_data, sb.st_size, MADV_SEQUENTIAL);
}
return 0;
}
/*
* rpc_srv_blobUnmap() Unmap blob memory region
* @blob = Mapped BLOB element
* return: none
*/
inline void
rpc_srv_blobUnmap(rpc_blob_t * __restrict blob)
{
if (!blob || !blob->blob_data)
rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n");
else {
munmap(blob->blob_data, blob->blob_len);
blob->blob_data = NULL;
blob->blob_len = 0;
}
}
/*
* rpc_srv_blobFree() Free blob from disk & memory
* @srv = RPC Server instance
* @blob = Mapped BLOB element
* return: -1 error or 0 ok
*/
inline int
rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob)
{
char szFName[MAXPATHLEN];
if (!blob) {
rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n");
return -1;
}
if (blob->blob_data)
rpc_srv_blobUnmap(blob);
memset(szFName, 0, MAXPATHLEN);
snprintf(szFName, MAXPATHLEN, BLOB_FILE, srv->srv_blob.dir, blob->blob_var);
if (remove(szFName) == -1) {
LOGERR;
return -1;
}
return 0;
}
// ------------------------------------------------------------
/*
* rpc_srv_sendBLOB() Send mapped BLOB to client
* @cli = Client instance
* @blob = Mapped BLOB element
* return: -1 error, 0 ok
*/
int
rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob)
{
int ret, len;
uint8_t *pos;
if (!cli || !blob || !blob->blob_data) {
rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n");
return -1;
}
for (ret = blob->blob_len, pos = blob->blob_data; ret > 0; ret -= len, pos += len)
if ((len = send(cli->cli_sock, pos, ret > BLOBSIZ ? BLOBSIZ : ret, 0)) == -1) {
LOGERR;
return -1;
}
return ret;
}
/*
* rpc_srv_recvBLOB() Receive BLOB from client
* @cli = Client instance
* @blob = Mapped BLOB element
* return: -1 error, 0 ok, >0 unreceived data from client, may be error?
*/
int
rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob)
{
int ret, len;
uint8_t *pos;
fd_set fds;
struct timeval tv = { DEF_RPC_TIMEOUT, 0 };
if (!cli || !blob || !blob->blob_data) {
rpc_SetErr(EINVAL, "Error:: invalid arguments ...\n");
return -1;
}
for (ret = blob->blob_len, pos = blob->blob_data; ret > 0; ret -= len, pos += len) {
FD_ZERO(&fds);
FD_SET(cli->cli_sock, &fds);
len = select(cli->cli_sock + 1, &fds, NULL, NULL, &tv);
if (len < 1) {
LOGERR;
return -1;
}
if ((len = recv(cli->cli_sock, pos, BLOBSIZ, 0)) == -1) {
LOGERR;
return -1;
}
}
return ret;
}
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