| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| /* |
| * pkix_common.c |
| * |
| * Common utility functions used by various PKIX_PL functions |
| * |
| */ |
| |
| #include "pkix_pl_common.h" |
| |
| /* --Private-Functions-------------------------------------------- */ |
| |
| /* |
| * FUNCTION: pkix_LockObject |
| * DESCRIPTION: |
| * |
| * Locks the object pointed to by "object". |
| * |
| * PARAMETERS: |
| * "object" |
| * Address of object. Must be non-NULL |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_LockObject( |
| PKIX_PL_Object *object, |
| void *plContext) |
| { |
| PKIX_PL_Object *objectHeader; |
| |
| PKIX_ENTER(OBJECT, "pkix_LockObject"); |
| PKIX_NULLCHECK_ONE(object); |
| |
| if (object == (PKIX_PL_Object *)PKIX_ALLOC_ERROR()) { |
| goto cleanup; |
| } |
| |
| PKIX_OBJECT_DEBUG("\tShifting object pointer).\n"); |
| /* The header is sizeof(PKIX_PL_Object) before the object pointer */ |
| |
| objectHeader = object-1; |
| |
| PKIX_OBJECT_DEBUG("\tCalling PR_Lock).\n"); |
| PR_Lock(objectHeader->lock); |
| |
| cleanup: |
| |
| PKIX_RETURN(OBJECT); |
| } |
| |
| /* |
| * FUNCTION: pkix_UnlockObject |
| * DESCRIPTION: |
| * |
| * Unlocks the object pointed to by "object". |
| * |
| * PARAMETERS: |
| * "object" |
| * Address of Object. Must be non-NULL |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_UnlockObject( |
| PKIX_PL_Object *object, |
| void *plContext) |
| { |
| PKIX_PL_Object *objectHeader; |
| PRStatus result; |
| |
| PKIX_ENTER(OBJECT, "pkix_UnlockObject"); |
| PKIX_NULLCHECK_ONE(object); |
| |
| if (object == (PKIX_PL_Object *)PKIX_ALLOC_ERROR()) { |
| goto cleanup; |
| } |
| |
| PKIX_OBJECT_DEBUG("\tShifting object pointer).\n"); |
| /* The header is sizeof(PKIX_PL_Object) before the object pointer */ |
| |
| objectHeader = object-1; |
| |
| PKIX_OBJECT_DEBUG("\tCalling PR_Unlock).\n"); |
| result = PR_Unlock(objectHeader->lock); |
| |
| if (result == PR_FAILURE) { |
| PKIX_OBJECT_DEBUG("\tPR_Unlock failed.).\n"); |
| PKIX_ERROR_FATAL(PKIX_ERRORUNLOCKINGOBJECT); |
| } |
| |
| cleanup: |
| |
| PKIX_RETURN(OBJECT); |
| } |
| |
| /* |
| * FUNCTION: pkix_pl_UInt32_Overflows |
| * DESCRIPTION: |
| * |
| * Returns a PKIX_Boolean indicating whether the unsigned integer |
| * represented by "string" is too large to fit in 32-bits (i.e. |
| * whether it overflows). With the exception of the string "0", |
| * all other strings are stripped of any leading zeros. It is assumed |
| * that every character in "string" is from the set {'0' - '9'}. |
| * |
| * PARAMETERS |
| * "string" |
| * Address of array of bytes representing PKIX_UInt32 that's being tested |
| * for 32-bit overflow |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * PKIX_TRUE if PKIX_UInt32 represented by "string" overflows; |
| * PKIX_FALSE otherwise |
| */ |
| PKIX_Boolean |
| pkix_pl_UInt32_Overflows(char *string){ |
| char *firstNonZero = NULL; |
| PKIX_UInt32 length, i; |
| char *MAX_UINT32_STRING = "4294967295"; |
| |
| PKIX_DEBUG_ENTER(OID); |
| |
| PKIX_OID_DEBUG("\tCalling PL_strlen).\n"); |
| length = PL_strlen(string); |
| |
| if (length < MAX_DIGITS_32){ |
| return (PKIX_FALSE); |
| } |
| |
| firstNonZero = string; |
| for (i = 0; i < length; i++){ |
| if (*string == '0'){ |
| firstNonZero++; |
| } |
| } |
| |
| PKIX_OID_DEBUG("\tCalling PL_strlen).\n"); |
| length = PL_strlen(firstNonZero); |
| |
| if (length > MAX_DIGITS_32){ |
| return (PKIX_TRUE); |
| } |
| |
| PKIX_OID_DEBUG("\tCalling PL_strlen).\n"); |
| if (length == MAX_DIGITS_32){ |
| PKIX_OID_DEBUG("\tCalling PORT_Strcmp).\n"); |
| if (PORT_Strcmp(firstNonZero, MAX_UINT32_STRING) > 0){ |
| return (PKIX_TRUE); |
| } |
| } |
| |
| return (PKIX_FALSE); |
| } |
| |
| /* |
| * FUNCTION: pkix_pl_getOIDToken |
| * DESCRIPTION: |
| * |
| * Takes the array of DER-encoded bytes pointed to by "derBytes" |
| * (representing an OID) and the value of "index" representing the index into |
| * the array, and decodes the bytes until an integer token is retrieved. If |
| * successful, this function stores the integer component at "pToken" and |
| * stores the index representing the next byte in the array at "pIndex" |
| * (following the last byte that was used in the decoding). This new output |
| * index can be used in subsequent calls as an input index, allowing each |
| * token of the OID to be retrieved consecutively. Note that there is a |
| * special case for the first byte, in that it encodes two separate integer |
| * tokens. For example, the byte {2a} represents the integer tokens {1,2}. |
| * This special case is not handled here and must be handled by the caller. |
| * |
| * PARAMETERS |
| * "derBytes" |
| * Address of array of bytes representing a DER-encoded OID. |
| * Must be non-NULL. |
| * "index" |
| * Index into the array that this function will begin decoding at. |
| * "pToken" |
| * Destination for decoded OID token. Must be non-NULL. |
| * "pIndex" |
| * Destination for index of next byte following last byte used. |
| * Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns an Object Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| static PKIX_Error * |
| pkix_pl_getOIDToken( |
| char *derBytes, |
| PKIX_UInt32 index, |
| PKIX_UInt32 *pToken, |
| PKIX_UInt32 *pIndex, |
| void *plContext) |
| { |
| PKIX_UInt32 retval, i, tmp; |
| |
| PKIX_ENTER(OID, "pkix_pl_getOIDToken"); |
| PKIX_NULLCHECK_THREE(derBytes, pToken, pIndex); |
| |
| /* |
| * We should only need to parse a maximum of four bytes, because |
| * RFC 3280 "mandates support for OIDs which have arc elements |
| * with values that are less than 2^28, that is, they MUST be between |
| * 0 and 268,435,455, inclusive. This allows each arc element to be |
| * represented within a single 32 bit word." |
| */ |
| |
| for (i = 0, retval = 0; i < 4; i++) { |
| retval <<= 7; |
| tmp = derBytes[index]; |
| index++; |
| retval |= (tmp & 0x07f); |
| if ((tmp & 0x080) == 0){ |
| *pToken = retval; |
| *pIndex = index; |
| goto cleanup; |
| } |
| } |
| |
| PKIX_ERROR(PKIX_INVALIDENCODINGOIDTOKENVALUETOOBIG); |
| |
| cleanup: |
| |
| PKIX_RETURN(OID); |
| |
| } |
| |
| /* |
| * FUNCTION: pkix_pl_helperBytes2Ascii |
| * DESCRIPTION: |
| * |
| * Converts an array of integers pointed to by "tokens" with a length of |
| * "numTokens", to an ASCII string consisting of those integers with dots in |
| * between them and stores the result at "pAscii". The ASCII representation is |
| * guaranteed to end with a NUL character. This is particularly useful for |
| * OID's and IP Addresses. |
| * |
| * The return value "pAscii" is not reference-counted and will need to |
| * be freed with PKIX_PL_Free. |
| * |
| * PARAMETERS |
| * "tokens" |
| * Address of array of integers. Must be non-NULL. |
| * "numTokens" |
| * Length of array of integers. Must be non-zero. |
| * "pAscii" |
| * Address where object pointer will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns an Object Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_pl_helperBytes2Ascii( |
| PKIX_UInt32 *tokens, |
| PKIX_UInt32 numTokens, |
| char **pAscii, |
| void *plContext) |
| { |
| char *tempString = NULL; |
| char *outputString = NULL; |
| char *format = "%d"; |
| PKIX_UInt32 i = 0; |
| PKIX_UInt32 outputLen = 0; |
| PKIX_Int32 error; |
| |
| PKIX_ENTER(OBJECT, "pkix_pl_helperBytes2Ascii"); |
| PKIX_NULLCHECK_TWO(tokens, pAscii); |
| |
| if (numTokens == 0) { |
| PKIX_ERROR_FATAL(PKIX_HELPERBYTES2ASCIINUMTOKENSZERO); |
| } |
| |
| /* |
| * tempString will hold the string representation of a PKIX_UInt32 type |
| * The maximum value that can be held by an unsigned 32-bit integer |
| * is (2^32 - 1) = 4294967295 (which is ten digits long) |
| * Since tempString will hold the string representation of a |
| * PKIX_UInt32, we allocate 11 bytes for it (1 byte for '\0') |
| */ |
| |
| PKIX_CHECK(PKIX_PL_Malloc |
| (MAX_DIGITS_32 + 1, (void **)&tempString, plContext), |
| PKIX_MALLOCFAILED); |
| |
| for (i = 0; i < numTokens; i++){ |
| PKIX_OBJECT_DEBUG("\tCalling PR_snprintf).\n"); |
| error = PR_snprintf(tempString, |
| MAX_DIGITS_32 + 1, |
| format, |
| tokens[i]); |
| if (error == -1){ |
| PKIX_ERROR(PKIX_PRSNPRINTFFAILED); |
| } |
| |
| PKIX_OBJECT_DEBUG("\tCalling PL_strlen).\n"); |
| outputLen += PL_strlen(tempString); |
| |
| /* Include a dot to separate each number */ |
| outputLen++; |
| } |
| |
| /* Allocate space for the destination string */ |
| PKIX_CHECK(PKIX_PL_Malloc |
| (outputLen, (void **)&outputString, plContext), |
| PKIX_MALLOCFAILED); |
| |
| *outputString = '\0'; |
| |
| /* Concatenate all strings together */ |
| for (i = 0; i < numTokens; i++){ |
| |
| PKIX_OBJECT_DEBUG("\tCalling PR_snprintf).\n"); |
| error = PR_snprintf(tempString, |
| MAX_DIGITS_32 + 1, |
| format, |
| tokens[i]); |
| if (error == -1){ |
| PKIX_ERROR(PKIX_PRSNPRINTFFAILED); |
| } |
| |
| PKIX_OBJECT_DEBUG("\tCalling PL_strcat).\n"); |
| (void) PL_strcat(outputString, tempString); |
| |
| /* we don't want to put a "." at the very end */ |
| if (i < (numTokens - 1)){ |
| PKIX_OBJECT_DEBUG("\tCalling PL_strcat).\n"); |
| (void) PL_strcat(outputString, "."); |
| } |
| } |
| |
| /* Ensure output string ends with terminating null */ |
| outputString[outputLen-1] = '\0'; |
| |
| *pAscii = outputString; |
| outputString = NULL; |
| |
| cleanup: |
| |
| PKIX_FREE(outputString); |
| PKIX_FREE(tempString); |
| |
| PKIX_RETURN(OBJECT); |
| |
| } |
| |
| /* |
| * FUNCTION: pkix_pl_ipAddrBytes2Ascii |
| * DESCRIPTION: |
| * |
| * Converts the DER encoding of an IPAddress pointed to by "secItem" to an |
| * ASCII representation and stores the result at "pAscii". The ASCII |
| * representation is guaranteed to end with a NUL character. The input |
| * SECItem must contain non-NULL data and must have a positive length. |
| * |
| * The return value "pAscii" is not reference-counted and will need to |
| * be freed with PKIX_PL_Free. |
| * XXX this function assumes that IPv4 addresses are being used |
| * XXX what about IPv6? can NSS tell the difference |
| * |
| * PARAMETERS |
| * "secItem" |
| * Address of SECItem which contains bytes and length of DER encoding. |
| * Must be non-NULL. |
| * "pAscii" |
| * Address where object pointer will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns an Object Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_pl_ipAddrBytes2Ascii( |
| SECItem *secItem, |
| char **pAscii, |
| void *plContext) |
| { |
| char *data = NULL; |
| PKIX_UInt32 *tokens = NULL; |
| PKIX_UInt32 numTokens = 0; |
| PKIX_UInt32 i = 0; |
| char *asciiString = NULL; |
| |
| PKIX_ENTER(OBJECT, "pkix_pl_ipAddrBytes2Ascii"); |
| PKIX_NULLCHECK_THREE(secItem, pAscii, secItem->data); |
| |
| if (secItem->len == 0) { |
| PKIX_ERROR_FATAL(PKIX_IPADDRBYTES2ASCIIDATALENGTHZERO); |
| } |
| |
| data = (char *)(secItem->data); |
| numTokens = secItem->len; |
| |
| /* allocate space for array of integers */ |
| PKIX_CHECK(PKIX_PL_Malloc |
| (numTokens * sizeof (PKIX_UInt32), |
| (void **)&tokens, |
| plContext), |
| PKIX_MALLOCFAILED); |
| |
| /* populate array of integers */ |
| for (i = 0; i < numTokens; i++){ |
| tokens[i] = data[i]; |
| } |
| |
| /* convert array of integers to ASCII */ |
| PKIX_CHECK(pkix_pl_helperBytes2Ascii |
| (tokens, numTokens, &asciiString, plContext), |
| PKIX_HELPERBYTES2ASCIIFAILED); |
| |
| *pAscii = asciiString; |
| |
| cleanup: |
| |
| PKIX_FREE(tokens); |
| |
| PKIX_RETURN(OBJECT); |
| } |
| |
| |
| /* |
| * FUNCTION: pkix_pl_oidBytes2Ascii |
| * DESCRIPTION: |
| * |
| * Converts the DER encoding of an OID pointed to by "secItem" to an ASCII |
| * representation and stores it at "pAscii". The ASCII representation is |
| * guaranteed to end with a NUL character. The input SECItem must contain |
| * non-NULL data and must have a positive length. |
| * |
| * Example: the six bytes {2a 86 48 86 f7 0d} represent the |
| * four integer tokens {1, 2, 840, 113549}, which we will convert |
| * into ASCII yielding "1.2.840.113549" |
| * |
| * The return value "pAscii" is not reference-counted and will need to |
| * be freed with PKIX_PL_Free. |
| * |
| * PARAMETERS |
| * "secItem" |
| * Address of SECItem which contains bytes and length of DER encoding. |
| * Must be non-NULL. |
| * "pAscii" |
| * Address where object pointer will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns an OID Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_pl_oidBytes2Ascii( |
| SECItem *secItem, |
| char **pAscii, |
| void *plContext) |
| { |
| char *data = NULL; |
| PKIX_UInt32 *tokens = NULL; |
| PKIX_UInt32 token = 0; |
| PKIX_UInt32 numBytes = 0; |
| PKIX_UInt32 numTokens = 0; |
| PKIX_UInt32 i = 0, x = 0, y = 0; |
| PKIX_UInt32 index = 0; |
| char *asciiString = NULL; |
| |
| PKIX_ENTER(OID, "pkix_pl_oidBytes2Ascii"); |
| PKIX_NULLCHECK_THREE(secItem, pAscii, secItem->data); |
| |
| if (secItem->len == 0) { |
| PKIX_ERROR_FATAL(PKIX_OIDBYTES2ASCIIDATALENGTHZERO); |
| } |
| |
| data = (char *)(secItem->data); |
| numBytes = secItem->len; |
| numTokens = 0; |
| |
| /* calculate how many integer tokens are represented by the bytes. */ |
| for (i = 0; i < numBytes; i++){ |
| if ((data[i] & 0x080) == 0){ |
| numTokens++; |
| } |
| } |
| |
| /* if we are unable to retrieve any tokens at all, we throw an error */ |
| if (numTokens == 0){ |
| PKIX_ERROR(PKIX_INVALIDDERENCODINGFOROID); |
| } |
| |
| /* add one more token b/c the first byte always contains two tokens */ |
| numTokens++; |
| |
| /* allocate space for array of integers */ |
| PKIX_CHECK(PKIX_PL_Malloc |
| (numTokens * sizeof (PKIX_UInt32), |
| (void **)&tokens, |
| plContext), |
| PKIX_MALLOCFAILED); |
| |
| /* populate array of integers */ |
| for (i = 0; i < numTokens; i++){ |
| |
| /* retrieve integer token */ |
| PKIX_CHECK(pkix_pl_getOIDToken |
| (data, index, &token, &index, plContext), |
| PKIX_GETOIDTOKENFAILED); |
| |
| if (i == 0){ |
| |
| /* |
| * special case: the first DER-encoded byte represents |
| * two tokens. We take advantage of fact that first |
| * token must be 0, 1, or 2; and second token must be |
| * between {0, 39} inclusive if first token is 0 or 1. |
| */ |
| |
| if (token < 40) |
| x = 0; |
| else if (token < 80) |
| x = 1; |
| else |
| x = 2; |
| y = token - (x * 40); |
| |
| tokens[0] = x; |
| tokens[1] = y; |
| i++; |
| } else { |
| tokens[i] = token; |
| } |
| } |
| |
| /* convert array of integers to ASCII */ |
| PKIX_CHECK(pkix_pl_helperBytes2Ascii |
| (tokens, numTokens, &asciiString, plContext), |
| PKIX_HELPERBYTES2ASCIIFAILED); |
| |
| *pAscii = asciiString; |
| |
| cleanup: |
| |
| PKIX_FREE(tokens); |
| PKIX_RETURN(OID); |
| |
| } |
| |
| /* |
| * FUNCTION: pkix_UTF16_to_EscASCII |
| * DESCRIPTION: |
| * |
| * Converts array of bytes pointed to by "utf16String" with length of |
| * "utf16Length" (which must be even) into a freshly allocated Escaped ASCII |
| * string and stores a pointer to that string at "pDest" and stores the |
| * string's length at "pLength". The Escaped ASCII string's length does not |
| * include the final NUL character. The caller is responsible for freeing |
| * "pDest" using PKIX_PL_Free. If "debug" is set, uses EscASCII_Debug |
| * encoding. |
| * |
| * PARAMETERS: |
| * "utf16String" |
| * Address of array of bytes representing data source. Must be non-NULL. |
| * "utf16Length" |
| * Length of data source. Must be even. |
| * "debug" |
| * Boolean value indicating whether debug mode is desired. |
| * "pDest" |
| * Address where data will be stored. Must be non-NULL. |
| * "pLength" |
| * Address where data length will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns a String Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_UTF16_to_EscASCII( |
| const void *utf16String, |
| PKIX_UInt32 utf16Length, |
| PKIX_Boolean debug, |
| char **pDest, |
| PKIX_UInt32 *pLength, |
| void *plContext) |
| { |
| char *destPtr = NULL; |
| PKIX_UInt32 i, charLen; |
| PKIX_UInt32 x = 0, y = 0, z = 0; |
| unsigned char *utf16Char = (unsigned char *)utf16String; |
| |
| PKIX_ENTER(STRING, "pkix_UTF16_to_EscASCII"); |
| PKIX_NULLCHECK_THREE(utf16String, pDest, pLength); |
| |
| /* Assume every pair of bytes becomes &#xNNNN; */ |
| charLen = 4*utf16Length; |
| |
| /* utf16Lenght must be even */ |
| if ((utf16Length % 2) != 0){ |
| PKIX_ERROR(PKIX_UTF16ALIGNMENTERROR); |
| } |
| |
| /* Count how many bytes we need */ |
| for (i = 0; i < utf16Length; i += 2) { |
| if ((utf16Char[i] == 0x00)&& |
| pkix_isPlaintext(utf16Char[i+1], debug)) { |
| if (utf16Char[i+1] == '&') { |
| /* Need to convert this to & */ |
| charLen -= 3; |
| } else { |
| /* We can fit this into one char */ |
| charLen -= 7; |
| } |
| } else if ((utf16Char[i] >= 0xD8) && (utf16Char[i] <= 0xDB)) { |
| if ((i+3) >= utf16Length) { |
| PKIX_ERROR(PKIX_UTF16HIGHZONEALIGNMENTERROR); |
| } else if ((utf16Char[i+2] >= 0xDC)&& |
| (utf16Char[i+2] <= 0xDF)) { |
| /* Quartet of bytes will become &#xNNNNNNNN; */ |
| charLen -= 4; |
| /* Quartet of bytes will produce 12 chars */ |
| i += 2; |
| } else { |
| /* Second pair should be DC00-DFFF */ |
| PKIX_ERROR(PKIX_UTF16LOWZONEERROR); |
| } |
| } |
| } |
| |
| *pLength = charLen; |
| |
| /* Ensure this string is null terminated */ |
| charLen++; |
| |
| /* Allocate space for character array */ |
| PKIX_CHECK(PKIX_PL_Malloc(charLen, (void **)pDest, plContext), |
| PKIX_MALLOCFAILED); |
| |
| destPtr = *pDest; |
| for (i = 0; i < utf16Length; i += 2) { |
| if ((utf16Char[i] == 0x00)&& |
| pkix_isPlaintext(utf16Char[i+1], debug)) { |
| /* Write a single character */ |
| *destPtr++ = utf16Char[i+1]; |
| } else if ((utf16Char[i+1] == '&') && (utf16Char[i] == 0x00)){ |
| *destPtr++ = '&'; |
| *destPtr++ = 'a'; |
| *destPtr++ = 'm'; |
| *destPtr++ = 'p'; |
| *destPtr++ = ';'; |
| } else if ((utf16Char[i] >= 0xD8)&& |
| (utf16Char[i] <= 0xDB)&& |
| (utf16Char[i+2] >= 0xDC)&& |
| (utf16Char[i+2] <= 0xDF)) { |
| /* |
| * Special UTF pairs are of the form: |
| * x = D800..DBFF; y = DC00..DFFF; |
| * The result is of the form: |
| * ((x - D800) * 400 + (y - DC00)) + 0001 0000 |
| */ |
| x = 0x0FFFF & ((utf16Char[i]<<8) | utf16Char[i+1]); |
| y = 0x0FFFF & ((utf16Char[i+2]<<8) | utf16Char[i+3]); |
| z = ((x - 0xD800) * 0x400 + (y - 0xDC00)) + 0x00010000; |
| |
| /* Sprintf &#xNNNNNNNN; */ |
| PKIX_STRING_DEBUG("\tCalling PR_snprintf).\n"); |
| if (PR_snprintf(destPtr, 13, "&#x%08X;", z) == |
| (PKIX_UInt32)(-1)) { |
| PKIX_ERROR(PKIX_PRSNPRINTFFAILED); |
| } |
| i += 2; |
| destPtr += 12; |
| } else { |
| /* Sprintf &#xNNNN; */ |
| PKIX_STRING_DEBUG("\tCalling PR_snprintf).\n"); |
| if (PR_snprintf |
| (destPtr, |
| 9, |
| "&#x%02X%02X;", |
| utf16Char[i], |
| utf16Char[i+1]) == |
| (PKIX_UInt32)(-1)) { |
| PKIX_ERROR(PKIX_PRSNPRINTFFAILED); |
| } |
| destPtr += 8; |
| } |
| } |
| *destPtr = '\0'; |
| |
| cleanup: |
| |
| if (PKIX_ERROR_RECEIVED){ |
| PKIX_FREE(*pDest); |
| } |
| |
| PKIX_RETURN(STRING); |
| } |
| |
| /* |
| * FUNCTION: pkix_EscASCII_to_UTF16 |
| * DESCRIPTION: |
| * |
| * Converts array of bytes pointed to by "escAsciiString" with length of |
| * "escAsciiLength" into a freshly allocated UTF-16 string and stores a |
| * pointer to that string at "pDest" and stores the string's length at |
| * "pLength". The caller is responsible for freeing "pDest" using |
| * PKIX_PL_Free. If "debug" is set, uses EscASCII_Debug encoding. |
| * |
| * PARAMETERS: |
| * "escAsciiString" |
| * Address of array of bytes representing data source. Must be non-NULL. |
| * "escAsciiLength" |
| * Length of data source. Must be even. |
| * "debug" |
| * Boolean value indicating whether debug mode is desired. |
| * "pDest" |
| * Address where data will be stored. Must be non-NULL. |
| * "pLength" |
| * Address where data length will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns a String Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_EscASCII_to_UTF16( |
| const char *escAsciiString, |
| PKIX_UInt32 escAsciiLen, |
| PKIX_Boolean debug, |
| void **pDest, |
| PKIX_UInt32 *pLength, |
| void *plContext) |
| { |
| PKIX_UInt32 newLen, i, j, charSize; |
| PKIX_UInt32 x = 0, y = 0, z = 0; |
| unsigned char *destPtr = NULL; |
| unsigned char testChar, testChar2; |
| unsigned char *stringData = (unsigned char *)escAsciiString; |
| |
| PKIX_ENTER(STRING, "pkix_EscASCII_to_UTF16"); |
| PKIX_NULLCHECK_THREE(escAsciiString, pDest, pLength); |
| |
| if (escAsciiLen == 0) { |
| PKIX_CHECK(PKIX_PL_Malloc(escAsciiLen, pDest, plContext), |
| PKIX_MALLOCFAILED); |
| goto cleanup; |
| } |
| |
| /* Assume each unicode character takes two bytes */ |
| newLen = escAsciiLen*2; |
| |
| /* Count up number of unicode encoded characters */ |
| for (i = 0; i < escAsciiLen; i++) { |
| if (!pkix_isPlaintext(stringData[i], debug)&& |
| (stringData[i] != '&')) { |
| PKIX_ERROR(PKIX_ILLEGALCHARACTERINESCAPEDASCII); |
| } else if (PL_strstr(escAsciiString+i, "&") == |
| escAsciiString+i) { |
| /* Convert EscAscii "&" to two bytes */ |
| newLen -= 8; |
| i += 4; |
| } else if ((PL_strstr(escAsciiString+i, "&#x") == |
| escAsciiString+i)|| |
| (PL_strstr(escAsciiString+i, "&#X") == |
| escAsciiString+i)) { |
| if (((i+7) <= escAsciiLen)&& |
| (escAsciiString[i+7] == ';')) { |
| /* Convert &#xNNNN; to two bytes */ |
| newLen -= 14; |
| i += 7; |
| } else if (((i+11) <= escAsciiLen)&& |
| (escAsciiString[i+11] == ';')) { |
| /* Convert &#xNNNNNNNN; to four bytes */ |
| newLen -= 20; |
| i += 11; |
| } else { |
| PKIX_ERROR(PKIX_ILLEGALUSEOFAMP); |
| } |
| } |
| } |
| |
| PKIX_CHECK(PKIX_PL_Malloc(newLen, pDest, plContext), |
| PKIX_MALLOCFAILED); |
| |
| /* Copy into newly allocated space */ |
| destPtr = (unsigned char *)*pDest; |
| |
| i = 0; |
| while (i < escAsciiLen) { |
| /* Copy each byte until you hit a & */ |
| if (pkix_isPlaintext(escAsciiString[i], debug)) { |
| *destPtr++ = 0x00; |
| *destPtr++ = escAsciiString[i++]; |
| } else if (PL_strstr(escAsciiString+i, "&") == |
| escAsciiString+i) { |
| /* Convert EscAscii "&" to two bytes */ |
| *destPtr++ = 0x00; |
| *destPtr++ = '&'; |
| i += 5; |
| } else if (((PL_strstr(escAsciiString+i, "&#x") == |
| escAsciiString+i)|| |
| (PL_strstr(escAsciiString+i, "&#X") == |
| escAsciiString+i))&& |
| ((i+7) <= escAsciiLen)) { |
| |
| /* We're either looking at &#xNNNN; or &#xNNNNNNNN; */ |
| charSize = (escAsciiString[i+7] == ';')?4:8; |
| |
| /* Skip past the &#x */ |
| i += 3; |
| |
| /* Make sure there is a terminating semi-colon */ |
| if (((i+charSize) > escAsciiLen)|| |
| (escAsciiString[i+charSize] != ';')) { |
| PKIX_ERROR(PKIX_TRUNCATEDUNICODEINESCAPEDASCII); |
| } |
| |
| for (j = 0; j < charSize; j++) { |
| if (!PKIX_ISXDIGIT |
| (escAsciiString[i+j])) { |
| PKIX_ERROR(PKIX_ILLEGALUNICODECHARACTER); |
| } else if (charSize == 8) { |
| x |= (pkix_hex2i |
| (escAsciiString[i+j])) |
| <<(4*(7-j)); |
| } |
| } |
| |
| testChar = |
| (pkix_hex2i(escAsciiString[i])<<4)| |
| pkix_hex2i(escAsciiString[i+1]); |
| testChar2 = |
| (pkix_hex2i(escAsciiString[i+2])<<4)| |
| pkix_hex2i(escAsciiString[i+3]); |
| |
| if (charSize == 4) { |
| if ((testChar >= 0xD8)&& |
| (testChar <= 0xDF)) { |
| PKIX_ERROR(PKIX_ILLEGALSURROGATEPAIR); |
| } else if ((testChar == 0x00)&& |
| pkix_isPlaintext(testChar2, debug)) { |
| PKIX_ERROR( |
| PKIX_ILLEGALCHARACTERINESCAPEDASCII); |
| } |
| *destPtr++ = testChar; |
| *destPtr++ = testChar2; |
| } else if (charSize == 8) { |
| /* First two chars must be 0001-0010 */ |
| if (!((testChar == 0x00)&& |
| ((testChar2 >= 0x01)&& |
| (testChar2 <= 0x10)))) { |
| PKIX_ERROR( |
| PKIX_ILLEGALCHARACTERINESCAPEDASCII); |
| } |
| /* |
| * Unicode Strings of the form: |
| * x = 0001 0000..0010 FFFF |
| * Encoded as pairs of UTF-16 where |
| * y = ((x - 0001 0000) / 400) + D800 |
| * z = ((x - 0001 0000) % 400) + DC00 |
| */ |
| x -= 0x00010000; |
| y = (x/0x400)+ 0xD800; |
| z = (x%0x400)+ 0xDC00; |
| |
| /* Copy four bytes */ |
| *destPtr++ = (y&0xFF00)>>8; |
| *destPtr++ = (y&0x00FF); |
| *destPtr++ = (z&0xFF00)>>8; |
| *destPtr++ = (z&0x00FF); |
| } |
| /* Move past the Hex digits and the semi-colon */ |
| i += charSize+1; |
| } else { |
| /* Do not allow any other non-plaintext character */ |
| PKIX_ERROR(PKIX_ILLEGALCHARACTERINESCAPEDASCII); |
| } |
| } |
| |
| *pLength = newLen; |
| |
| cleanup: |
| |
| if (PKIX_ERROR_RECEIVED){ |
| PKIX_FREE(*pDest); |
| } |
| |
| PKIX_RETURN(STRING); |
| } |
| |
| /* |
| * FUNCTION: pkix_UTF16_to_UTF8 |
| * DESCRIPTION: |
| * |
| * Converts array of bytes pointed to by "utf16String" with length of |
| * "utf16Length" into a freshly allocated UTF-8 string and stores a pointer |
| * to that string at "pDest" and stores the string's length at "pLength" (not |
| * counting the null terminator, if requested. The caller is responsible for |
| * freeing "pDest" using PKIX_PL_Free. |
| * |
| * PARAMETERS: |
| * "utf16String" |
| * Address of array of bytes representing data source. Must be non-NULL. |
| * "utf16Length" |
| * Length of data source. Must be even. |
| * "null-term" |
| * Boolean value indicating whether output should be null-terminated. |
| * "pDest" |
| * Address where data will be stored. Must be non-NULL. |
| * "pLength" |
| * Address where data length will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns a String Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_UTF16_to_UTF8( |
| const void *utf16String, |
| PKIX_UInt32 utf16Length, |
| PKIX_Boolean null_term, |
| void **pDest, |
| PKIX_UInt32 *pLength, |
| void *plContext) |
| { |
| PKIX_Boolean result; |
| PKIX_UInt32 reallocLen; |
| char *endPtr = NULL; |
| |
| PKIX_ENTER(STRING, "pkix_UTF16_to_UTF8"); |
| PKIX_NULLCHECK_THREE(utf16String, pDest, pLength); |
| |
| /* XXX How big can a UTF8 string be compared to a UTF16? */ |
| PKIX_CHECK(PKIX_PL_Calloc(1, utf16Length*2, pDest, plContext), |
| PKIX_CALLOCFAILED); |
| |
| PKIX_STRING_DEBUG("\tCalling PORT_UCS2_UTF8Conversion).\n"); |
| result = PORT_UCS2_UTF8Conversion |
| (PKIX_FALSE, /* False = From UCS2 */ |
| (unsigned char *)utf16String, |
| utf16Length, |
| (unsigned char *)*pDest, |
| utf16Length*2, /* Max Size */ |
| pLength); |
| if (result == PR_FALSE){ |
| PKIX_ERROR(PKIX_PORTUCS2UTF8CONVERSIONFAILED); |
| } |
| |
| reallocLen = *pLength; |
| |
| if (null_term){ |
| reallocLen++; |
| } |
| |
| PKIX_CHECK(PKIX_PL_Realloc(*pDest, reallocLen, pDest, plContext), |
| PKIX_REALLOCFAILED); |
| |
| if (null_term){ |
| endPtr = (char*)*pDest + reallocLen - 1; |
| *endPtr = '\0'; |
| } |
| |
| cleanup: |
| |
| if (PKIX_ERROR_RECEIVED){ |
| PKIX_FREE(*pDest); |
| } |
| |
| PKIX_RETURN(STRING); |
| } |
| |
| /* |
| * FUNCTION: pkix_UTF8_to_UTF16 |
| * DESCRIPTION: |
| * |
| * Converts array of bytes pointed to by "utf8String" with length of |
| * "utf8Length" into a freshly allocated UTF-16 string and stores a pointer |
| * to that string at "pDest" and stores the string's length at "pLength". The |
| * caller is responsible for freeing "pDest" using PKIX_PL_Free. |
| * |
| * PARAMETERS: |
| * "utf8String" |
| * Address of array of bytes representing data source. Must be non-NULL. |
| * "utf8Length" |
| * Length of data source. Must be even. |
| * "pDest" |
| * Address where data will be stored. Must be non-NULL. |
| * "pLength" |
| * Address where data length will be stored. Must be non-NULL. |
| * "plContext" |
| * Platform-specific context pointer. |
| * THREAD SAFETY: |
| * Thread Safe (see Thread Safety Definitions in Programmer's Guide) |
| * RETURNS: |
| * Returns NULL if the function succeeds. |
| * Returns a String Error if the function fails in a non-fatal way. |
| * Returns a Fatal Error if the function fails in an unrecoverable way. |
| */ |
| PKIX_Error * |
| pkix_UTF8_to_UTF16( |
| const void *utf8String, |
| PKIX_UInt32 utf8Length, |
| void **pDest, |
| PKIX_UInt32 *pLength, |
| void *plContext) |
| { |
| PKIX_Boolean result; |
| |
| PKIX_ENTER(STRING, "pkix_UTF8_to_UTF16"); |
| PKIX_NULLCHECK_THREE(utf8String, pDest, pLength); |
| |
| /* XXX How big can a UTF8 string be compared to a UTF16? */ |
| PKIX_CHECK(PKIX_PL_Calloc(1, utf8Length*2, pDest, plContext), |
| PKIX_MALLOCFAILED); |
| |
| PKIX_STRING_DEBUG("\tCalling PORT_UCS2_UTF8Conversion).\n"); |
| result = PORT_UCS2_UTF8Conversion |
| (PKIX_TRUE, /* True = From UTF8 */ |
| (unsigned char *)utf8String, |
| utf8Length, |
| (unsigned char *)*pDest, |
| utf8Length*2, /* Max Size */ |
| pLength); |
| if (result == PR_FALSE){ |
| PKIX_ERROR(PKIX_PORTUCS2UTF8CONVERSIONFAILED); |
| } |
| |
| PKIX_CHECK(PKIX_PL_Realloc(*pDest, *pLength, pDest, plContext), |
| PKIX_REALLOCFAILED); |
| |
| cleanup: |
| |
| if (PKIX_ERROR_RECEIVED){ |
| PKIX_FREE(*pDest); |
| } |
| |
| PKIX_RETURN(STRING); |
| } |
