fis-gtm/sr_port_cm/gtcmtr_get.c

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/****************************************************************
* *
* Copyright 2001, 2009 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_string.h"
#include "gdsroot.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsfhead.h"
#include "cmidef.h"
#include "hashtab_mname.h" /* needed for cmmdef.h */
#include "cmmdef.h"
#include "gtcm_bind_name.h"
#include "gvcst_protos.h" /* for gvcst_get prototype */
#include "gtcm_find_region.h"
#include "gtcmtr_protos.h"
#include "copy.h"
GBLREF connection_struct *curr_entry;
GBLREF gv_namehead *gv_target;
GBLREF gv_key *gv_currkey;
bool gtcmtr_get(void)
{
unsigned char *ptr, regnum;
unsigned short top, len, temp_short;
mval v;
cm_region_list *reg_ref;
ptr = curr_entry->clb_ptr->mbf;
assert(CMMS_Q_GET == *ptr);
ptr++;
GET_USHORT(len, ptr);
ptr += SIZEOF(unsigned short);
regnum = *ptr++;
len--; /* subtract size of regnum */
reg_ref = gtcm_find_region(curr_entry, regnum);
CM_GET_GVCURRKEY(ptr, len);
gtcm_bind_name(reg_ref->reghead, TRUE);
ptr = curr_entry->clb_ptr->mbf;
if (gv_target->root ? gvcst_get(&v) : FALSE)
{
temp_short = (unsigned short)v.str.len;
assert((int4)temp_short == v.str.len); /* ushort <- int4 assignment lossy? */
if (curr_entry->clb_ptr->mbl < 1 + /* msg header */
SIZEOF(temp_short) + /* size of length of $GET return value */
temp_short) /* length of $GET return value */
{ /* resize buffer */
cmi_realloc_mbf(curr_entry->clb_ptr, 1 + SIZEOF(temp_short) + temp_short);
ptr = curr_entry->clb_ptr->mbf;
}
*ptr++ = CMMS_R_GET;
PUT_USHORT(ptr, temp_short);
ptr += SIZEOF(unsigned short);
memcpy(ptr, v.str.addr, temp_short);
ptr += temp_short;
} else
*ptr++ = CMMS_R_UNDEF;
curr_entry->clb_ptr->cbl = ptr - curr_entry->clb_ptr->mbf;
return TRUE;
}