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/*
*******************************************************************************
*
* Copyright (C) 2003-2007, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: nfsprep.c
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2003jul11
* created by: Ram Viswanadha
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_IDNA
#include "nfsprep.h"
#include "ustr_imp.h"
#include "cintltst.h"
#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
#define NFS4_MAX_BUFFER_SIZE 1000
#define PREFIX_SUFFIX_SEPARATOR 0x0040 /* '@' */
const char* NFS4DataFileNames[5] ={
"nfscss",
"nfscsi",
"nfscis",
"nfsmxp",
"nfsmxs"
};
int32_t
nfs4_prepare( const char* src, int32_t srcLength,
char* dest, int32_t destCapacity,
NFS4ProfileState state,
UParseError* parseError,
UErrorCode* status){
UChar b1Stack[NFS4_MAX_BUFFER_SIZE],
b2Stack[NFS4_MAX_BUFFER_SIZE];
char b3Stack[NFS4_MAX_BUFFER_SIZE];
/* initialize pointers to stack buffers */
UChar *b1 = b1Stack, *b2 = b2Stack;
char *b3=b3Stack;
int32_t b1Len=0, b2Len=0, b3Len=0,
b1Capacity = NFS4_MAX_BUFFER_SIZE,
b2Capacity = NFS4_MAX_BUFFER_SIZE,
b3Capacity = NFS4_MAX_BUFFER_SIZE,
reqLength=0;
UStringPrepProfile* profile = NULL;
/* get the test data path */
const char *testdatapath = NULL;
if(status==NULL || U_FAILURE(*status)){
return 0;
}
if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
testdatapath = loadTestData(status);
/* convert the string from UTF-8 to UTF-16 */
u_strFromUTF8(b1,b1Capacity,&b1Len,src,srcLength,status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
/* reset the status */
*status = U_ZERO_ERROR;
b1 = (UChar*) malloc(b1Len * U_SIZEOF_UCHAR);
if(b1==NULL){
*status = U_MEMORY_ALLOCATION_ERROR;
goto CLEANUP;
}
b1Capacity = b1Len;
u_strFromUTF8(b1, b1Capacity, &b1Len, src, srcLength, status);
}
/* open the profile */
profile = usprep_open(testdatapath, NFS4DataFileNames[state], status);
/* prepare the string */
b2Len = usprep_prepare(profile, b1, b1Len, b2, b2Capacity, USPREP_DEFAULT, parseError, status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
*status = U_ZERO_ERROR;
b2 = (UChar*) malloc(b2Len * U_SIZEOF_UCHAR);
if(b2== NULL){
*status = U_MEMORY_ALLOCATION_ERROR;
goto CLEANUP;
}
b2Len = usprep_prepare(profile, b1, b1Len, b2, b2Len, USPREP_DEFAULT, parseError, status);
}
/* convert the string back to UTF-8 */
u_strToUTF8(b3,b3Capacity, &b3Len, b2, b2Len, status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
*status = U_ZERO_ERROR;
b3 = (char*) malloc(b3Len);
if(b3== NULL){
*status = U_MEMORY_ALLOCATION_ERROR;
goto CLEANUP;
}
b3Capacity = b3Len;
u_strToUTF8(b3,b3Capacity, &b3Len, b2, b2Len, status);
}
reqLength = b3Len;
if(dest!=NULL && reqLength <= destCapacity){
memmove(dest, b3, reqLength);
}
CLEANUP:
if(b1!=b1Stack){
free(b1);
}
if(b2!=b2Stack){
free(b2);
}
if(b3!=b3Stack){
free(b3);
}
return u_terminateChars(dest, destCapacity, reqLength, status);
}
/* sorted array for binary search*/
static const char* special_prefixes[]={
"\x0041\x004e\x004f\x004e\x0059\x004d\x004f\x0055\x0053",
"\x0041\x0055\x0054\x0048\x0045\x004e\x0054\x0049\x0043\x0041\x0054\x0045\x0044",
"\x0042\x0041\x0054\x0043\x0048",
"\x0044\x0049\x0041\x004c\x0055\x0050",
"\x0045\x0056\x0045\x0052\x0059\x004f\x004e\x0045",
"\x0047\x0052\x004f\x0055\x0050",
"\x0049\x004e\x0054\x0045\x0052\x0041\x0043\x0054\x0049\x0056\x0045",
"\x004e\x0045\x0054\x0057\x004f\x0052\x004b",
"\x004f\x0057\x004e\x0045\x0052",
};
/* binary search the sorted array */
static int
findStringIndex(const char* const *sortedArr, int32_t sortedArrLen, const char* target, int32_t targetLen){
int left, middle, right,rc;
left =0;
right= sortedArrLen-1;
while(left <= right){
middle = (left+right)/2;
rc=strncmp(sortedArr[middle],target, targetLen);
if(rc<0){
left = middle+1;
}else if(rc >0){
right = middle -1;
}else{
return middle;
}
}
return -1;
}
static void
getPrefixSuffix(const char *src, int32_t srcLength,
const char **prefix, int32_t *prefixLen,
const char **suffix, int32_t *suffixLen,
UErrorCode *status){
int32_t i=0;
*prefix = src;
while(i<srcLength){
if(src[i] == PREFIX_SUFFIX_SEPARATOR){
if((i+1) == srcLength){
/* we reached the end of the string */
*suffix = NULL;
i++;
break;
}
i++;/* the prefix contains the separator */
*suffix = src + i;
break;
}
i++;
}
*prefixLen = i;
*suffixLen = srcLength - i;
/* special prefixes must not be followed by suffixes! */
if((findStringIndex(special_prefixes,LENGTHOF(special_prefixes), *prefix, *prefixLen-1) != -1) && (*suffix != NULL)){
*status = U_PARSE_ERROR;
return;
}
}
int32_t
nfs4_mixed_prepare( const char* src, int32_t srcLength,
char* dest, int32_t destCapacity,
UParseError* parseError,
UErrorCode* status){
const char *prefix = NULL, *suffix = NULL;
int32_t prefixLen=0, suffixLen=0;
char pStack[NFS4_MAX_BUFFER_SIZE],
sStack[NFS4_MAX_BUFFER_SIZE];
char *p=pStack, *s=sStack;
int32_t pLen=0, sLen=0, reqLen=0,
pCapacity = NFS4_MAX_BUFFER_SIZE,
sCapacity = NFS4_MAX_BUFFER_SIZE;
if(status==NULL || U_FAILURE(*status)){
return 0;
}
if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
if(srcLength == -1){
srcLength = (int32_t)strlen(src);
}
getPrefixSuffix(src, srcLength, &prefix, &prefixLen, &suffix, &suffixLen, status);
/* prepare the prefix */
pLen = nfs4_prepare(prefix, prefixLen, p, pCapacity, NFS4_MIXED_PREP_PREFIX, parseError, status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
*status = U_ZERO_ERROR;
p = (char*) malloc(pLen);
if(p == NULL){
*status = U_MEMORY_ALLOCATION_ERROR;
goto CLEANUP;
}
pLen = nfs4_prepare(prefix, prefixLen, p, pLen, NFS4_MIXED_PREP_PREFIX, parseError, status);
}
/* prepare the suffix */
if(suffix != NULL){
sLen = nfs4_prepare(suffix, suffixLen, s, sCapacity, NFS4_MIXED_PREP_SUFFIX, parseError, status);
if(*status == U_BUFFER_OVERFLOW_ERROR){
*status = U_ZERO_ERROR;
s = (char*) malloc(pLen);
if(s == NULL){
*status = U_MEMORY_ALLOCATION_ERROR;
goto CLEANUP;
}
sLen = nfs4_prepare(suffix, suffixLen, s, sLen, NFS4_MIXED_PREP_SUFFIX, parseError, status);
}
}
reqLen = pLen+sLen+1 /* for the delimiter */;
if(dest != NULL && reqLen <= destCapacity){
memmove(dest, p, pLen);
/* add the suffix */
if(suffix!=NULL){
dest[pLen++] = PREFIX_SUFFIX_SEPARATOR;
memmove(dest+pLen, s, sLen);
}
}
CLEANUP:
if(p != pStack){
free(p);
}
if(s != sStack){
free(s);
}
return u_terminateChars(dest, destCapacity, reqLen, status);
}
int32_t
nfs4_cis_prepare( const char* src, int32_t srcLength,
char* dest, int32_t destCapacity,
UParseError* parseError,
UErrorCode* status){
return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CIS_PREP, parseError, status);
}
int32_t
nfs4_cs_prepare( const char* src, int32_t srcLength,
char* dest, int32_t destCapacity,
UBool isCaseSensitive,
UParseError* parseError,
UErrorCode* status){
if(isCaseSensitive){
return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CS_PREP_CS, parseError, status);
}else{
return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CS_PREP_CI, parseError, status);
}
}
#endif
/*
* Hey, Emacs, please set the following:
*
* Local Variables:
* indent-tabs-mode: nil
* End:
*
*/
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