icuSources/test/cintltst/nfsprep.c

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4  *******************************************************************************
   5  *
   6  *   Copyright (C) 2003-2014, International Business Machines
   7  *   Corporation and others.  All Rights Reserved.
   8  *
   9  *******************************************************************************
  10  *   file name:  nfsprep.c
  11  *   encoding:   UTF-8
  12  *   tab size:   8 (not used)
  13  *   indentation:4
  14  *
  15  *   created on: 2003jul11
  16  *   created by: Ram Viswanadha
  17  */
  18
  19 #include "unicode/utypes.h"
  20
  21 #if !UCONFIG_NO_IDNA
  22
  23 #include "nfsprep.h"
  24 #include "ustr_imp.h"
  25 #include "cintltst.h"
  26 #include "cmemory.h"
  27
  28 #define NFS4_MAX_BUFFER_SIZE 1000
  29 #define PREFIX_SUFFIX_SEPARATOR 0x0040 /* '@' */
  30
  31
  32 const char* NFS4DataFileNames[5] ={
  33     "nfscss",
  34     "nfscsi",
  35     "nfscis",
  36     "nfsmxp",
  37     "nfsmxs"
  38 };
  39
  40
  41 int32_t
  42 nfs4_prepare( const char* src, int32_t srcLength,
  43               char* dest, int32_t destCapacity,
  44               NFS4ProfileState state,
  45               UParseError* parseError,
  46               UErrorCode*  status){
  47
  48     UChar b1Stack[NFS4_MAX_BUFFER_SIZE],
  49           b2Stack[NFS4_MAX_BUFFER_SIZE];
  50     char  b3Stack[NFS4_MAX_BUFFER_SIZE];
  51
  52     /* initialize pointers to stack buffers */
  53     UChar *b1 = b1Stack, *b2 = b2Stack;
  54     char  *b3=b3Stack;
  55     int32_t b1Len=0, b2Len=0, b3Len=0,
  56             b1Capacity = NFS4_MAX_BUFFER_SIZE,
  57             b2Capacity = NFS4_MAX_BUFFER_SIZE,
  58             b3Capacity = NFS4_MAX_BUFFER_SIZE,
  59             reqLength=0;
  60
  61     UStringPrepProfile* profile = NULL;
  62     /* get the test data path */
  63     const char *testdatapath = NULL;
  64
  65     if(status==NULL || U_FAILURE(*status)){
  66         return 0;
  67     }
  68     if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
  69         *status = U_ILLEGAL_ARGUMENT_ERROR;
  70         return 0;
  71     }
  72     testdatapath = loadTestData(status);
  73
  74     /* convert the string from UTF-8 to UTF-16 */
  75     u_strFromUTF8(b1,b1Capacity,&b1Len,src,srcLength,status);
  76     if(*status == U_BUFFER_OVERFLOW_ERROR){
  77
  78         /* reset the status */
  79         *status = U_ZERO_ERROR;
  80
  81         b1 = (UChar*) malloc(b1Len * U_SIZEOF_UCHAR);
  82         if(b1==NULL){
  83             *status = U_MEMORY_ALLOCATION_ERROR;
  84             goto CLEANUP;
  85         }
  86
  87         b1Capacity = b1Len;
  88         u_strFromUTF8(b1, b1Capacity, &b1Len, src, srcLength, status);
  89     }
  90
  91     /* open the profile */
  92     profile = usprep_open(testdatapath, NFS4DataFileNames[state],  status);
  93     /* prepare the string */
  94     b2Len = usprep_prepare(profile, b1, b1Len, b2, b2Capacity, USPREP_DEFAULT, parseError, status);
  95     if(*status == U_BUFFER_OVERFLOW_ERROR){
  96         *status = U_ZERO_ERROR;
  97         b2 = (UChar*) malloc(b2Len * U_SIZEOF_UCHAR);
  98         if(b2== NULL){
  99             *status = U_MEMORY_ALLOCATION_ERROR;
 100             goto CLEANUP;
 101         }
 102         b2Len = usprep_prepare(profile, b1, b1Len, b2, b2Len, USPREP_DEFAULT, parseError, status);
 103     }
 104
 105     /* convert the string back to UTF-8 */
 106     u_strToUTF8(b3,b3Capacity, &b3Len, b2, b2Len, status);
 107     if(*status == U_BUFFER_OVERFLOW_ERROR){
 108         *status = U_ZERO_ERROR;
 109         b3 = (char*) malloc(b3Len);
 110         if(b3== NULL){
 111             *status = U_MEMORY_ALLOCATION_ERROR;
 112             goto CLEANUP;
 113         }
 114         b3Capacity = b3Len;
 115         u_strToUTF8(b3,b3Capacity, &b3Len, b2, b2Len, status);
 116     }
 117
 118     reqLength = b3Len;
 119     if(dest!=NULL && reqLength <= destCapacity){
 120         memmove(dest, b3, reqLength);
 121     }
 122
 123 CLEANUP:
 124     if(b1!=b1Stack){
 125         free(b1);
 126     }
 127     if(b2!=b2Stack){
 128         free(b2);
 129     }
 130     if(b3!=b3Stack){
 131         free(b3);
 132     }
 133
 134     return u_terminateChars(dest, destCapacity, reqLength, status);
 135 }
 136
 137 /* sorted array for binary search*/
 138 static const char* special_prefixes[]={
 139     "\x0041\x004e\x004f\x004e\x0059\x004d\x004f\x0055\x0053",
 140     "\x0041\x0055\x0054\x0048\x0045\x004e\x0054\x0049\x0043\x0041\x0054\x0045\x0044",
 141     "\x0042\x0041\x0054\x0043\x0048",
 142     "\x0044\x0049\x0041\x004c\x0055\x0050",
 143     "\x0045\x0056\x0045\x0052\x0059\x004f\x004e\x0045",
 144     "\x0047\x0052\x004f\x0055\x0050",
 145     "\x0049\x004e\x0054\x0045\x0052\x0041\x0043\x0054\x0049\x0056\x0045",
 146     "\x004e\x0045\x0054\x0057\x004f\x0052\x004b",
 147     "\x004f\x0057\x004e\x0045\x0052",
 148 };
 149
 150
 151 /* binary search the sorted array */
 152 static int
 153 findStringIndex(const char* const *sortedArr, int32_t sortedArrLen, const char* target, int32_t targetLen){
 154
 155     int left, middle, right,rc;
 156
 157     left =0;
 158     right= sortedArrLen-1;
 159
 160     while(left <= right){
 161         middle = (left+right)/2;
 162         rc=strncmp(sortedArr[middle],target, targetLen);
 163
 164         if(rc<0){
 165             left = middle+1;
 166         }else if(rc >0){
 167             right = middle -1;
 168         }else{
 169             return middle;
 170         }
 171     }
 172     return -1;
 173 }
 174
 175 static void
 176 getPrefixSuffix(const char *src, int32_t srcLength,
 177                 const char **prefix, int32_t *prefixLen,
 178                 const char **suffix, int32_t *suffixLen,
 179                 UErrorCode *status){
 180
 181     int32_t i=0;
 182     *prefix = src;
 183     while(i<srcLength){
 184         if(src[i] == PREFIX_SUFFIX_SEPARATOR){
 185             if((i+1) == srcLength){
 186                 /* we reached the end of the string */
 187                 *suffix = NULL;
 188                 i++;
 189                 break;
 190             }
 191             i++;/* the prefix contains the separator */
 192             *suffix = src + i;
 193             break;
 194         }
 195         i++;
 196     }
 197     *prefixLen = i;
 198     *suffixLen = srcLength - i;
 199     /* special prefixes must not be followed by suffixes! */
 200     if((findStringIndex(special_prefixes,UPRV_LENGTHOF(special_prefixes), *prefix, *prefixLen-1) != -1) && (*suffix != NULL)){
 201         *status = U_PARSE_ERROR;
 202         return;
 203     }
 204
 205 }
 206
 207 int32_t
 208 nfs4_mixed_prepare( const char* src, int32_t srcLength,
 209                     char* dest, int32_t destCapacity,
 210                     UParseError* parseError,
 211                     UErrorCode*  status){
 212
 213     const char *prefix = NULL, *suffix = NULL;
 214     int32_t prefixLen=0, suffixLen=0;
 215     char  pStack[NFS4_MAX_BUFFER_SIZE],
 216           sStack[NFS4_MAX_BUFFER_SIZE];
 217     char *p=pStack, *s=sStack;
 218     int32_t pLen=0, sLen=0, reqLen=0,
 219             pCapacity = NFS4_MAX_BUFFER_SIZE,
 220             sCapacity = NFS4_MAX_BUFFER_SIZE;
 221
 222
 223     if(status==NULL || U_FAILURE(*status)){
 224         return 0;
 225     }
 226     if((src==NULL) || (srcLength < -1) || (destCapacity<0) || (!dest && destCapacity > 0)){
 227         *status = U_ILLEGAL_ARGUMENT_ERROR;
 228         return 0;
 229     }
 230     if(srcLength == -1){
 231         srcLength = (int32_t)strlen(src);
 232     }
 233     getPrefixSuffix(src, srcLength, &prefix, &prefixLen, &suffix, &suffixLen, status);
 234
 235     /* prepare the prefix */
 236     pLen = nfs4_prepare(prefix, prefixLen, p, pCapacity, NFS4_MIXED_PREP_PREFIX, parseError, status);
 237     if(*status == U_BUFFER_OVERFLOW_ERROR){
 238         *status = U_ZERO_ERROR;
 239         p = (char*) malloc(pLen);
 240         if(p == NULL){
 241            *status = U_MEMORY_ALLOCATION_ERROR;
 242            goto CLEANUP;
 243         }
 244         pLen = nfs4_prepare(prefix, prefixLen, p, pLen, NFS4_MIXED_PREP_PREFIX, parseError, status);
 245     }
 246
 247     /* prepare the suffix */
 248     if(suffix != NULL){
 249         sLen = nfs4_prepare(suffix, suffixLen, s, sCapacity, NFS4_MIXED_PREP_SUFFIX, parseError, status);
 250         if(*status == U_BUFFER_OVERFLOW_ERROR){
 251             *status = U_ZERO_ERROR;
 252             s = (char*) malloc(pLen);
 253             if(s == NULL){
 254                *status = U_MEMORY_ALLOCATION_ERROR;
 255                goto CLEANUP;
 256             }
 257             sLen = nfs4_prepare(suffix, suffixLen, s, sLen, NFS4_MIXED_PREP_SUFFIX, parseError, status);
 258         }
 259     }
 260     reqLen = pLen+sLen+1 /* for the delimiter */;
 261     if(dest != NULL && reqLen <= destCapacity){
 262         memmove(dest, p, pLen);
 263         /* add the suffix */
 264         if(suffix!=NULL){
 265             dest[pLen++] = PREFIX_SUFFIX_SEPARATOR;
 266             memmove(dest+pLen, s, sLen);
 267         }
 268     }
 269
 270 CLEANUP:
 271     if(p != pStack){
 272         free(p);
 273     }
 274     if(s != sStack){
 275         free(s);
 276     }
 277
 278     return u_terminateChars(dest, destCapacity, reqLen, status);
 279 }
 280
 281 int32_t
 282 nfs4_cis_prepare(   const char* src, int32_t srcLength,
 283                     char* dest, int32_t destCapacity,
 284                     UParseError* parseError,
 285                     UErrorCode*  status){
 286     return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CIS_PREP, parseError, status);
 287 }
 288
 289
 290 int32_t
 291 nfs4_cs_prepare(    const char* src, int32_t srcLength,
 292                     char* dest, int32_t destCapacity,
 293                     UBool isCaseSensitive,
 294                     UParseError* parseError,
 295                     UErrorCode*  status){
 296     if(isCaseSensitive){
 297         return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CS_PREP_CS, parseError, status);
 298     }else{
 299         return nfs4_prepare(src, srcLength, dest, destCapacity, NFS4_CS_PREP_CI, parseError, status);
 300     }
 301 }
 302
 303 #endif
 304 /*
 305  * Hey, Emacs, please set the following:
 306  *
 307  * Local Variables:
 308  * indent-tabs-mode: nil
 309  * End:
 310  *
 311  */
 312