92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
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/************************************************************************/
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/* SISCO SOFTWARE MODULE HEADER *****************************************/
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/************************************************************************/
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/* (c) Copyright Systems Integration Specialists Company, Inc., */
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/* 1986 - 2001, All Rights Reserved. */
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/* */
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/* PROPRIETARY AND CONFIDENTIAL */
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/* */
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/* MODULE NAME : ard_idnt.c */
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/* PRODUCT(S) : ASN1DE */
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/* MODULE DESCRIPTION : */
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/* */
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/* GLOBAL FUNCTIONS DEFINED IN THIS MODULE : */
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/* */
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/* MODIFICATION LOG : */
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/* Date Who Rev Comments */
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/* -------- --- ------ ------------------------------------------- */
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/* 04/24/03 JRB 04 Del MAX_IDENT_LEN define, get from mms_def2.h*/
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/* 12/20/01 JRB 03 Chg ASN1_CTXT to ASN1_DEC_CTXT. */
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/* 09/13/99 MDE 02 Added SD_CONST modifiers */
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/* 07/26/99 MDE 01 New module, derived from ad_idnt.c */
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/************************************************************************/
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#include "glbtypes.h"
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#include "sysincs.h"
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#include <ctype.h>
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#include "asn1r.h"
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#include "asn1log.h"
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#include "mms_def2.h" /* need MAX_IDENT_LEN define */
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/************************************************************************/
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/* For debug version, use a static pointer to avoid duplication of */
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/* __FILE__ strings. */
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#ifdef DEBUG_SISCO
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SD_CONST static ST_CHAR *SD_CONST thisFileName = __FILE__;
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#endif
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/************************************************************************/
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/* get_identifier */
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/* Reads visible character data from message into selected buffer. If */
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/* character is encountered which is not valid for ASN.1 VisibleString */
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/* type, error code will be returned as function return value. Other- */
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/* wise, function return value will be zero. This function will verify */
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/* that buffer is big enough. Conversion from ASCII to local character */
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/* representation is not necessary for MS-DOS. */
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/************************************************************************/
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ST_RET asn1r_get_identifier (ASN1_DEC_CTXT *ac, ST_CHAR *ptr)
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{
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ST_INT i;
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#ifdef DEBUG_ASN1_DECODE
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if (!ptr)
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{
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slogCallStack (sLogCtrl,
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"get_identifier: attempt to reference through a NULL pointer");
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return(SD_FAILURE);
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}
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#endif
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if (ac->asn1r_elmnt_len > MAX_IDENT_LEN)
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{ /* if the name is to long return error */
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ALOG_NERR1 ("ASN.1 decode: Identifier too long (%u) ",
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(ST_UINT) ac->asn1r_elmnt_len);
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return (SD_FAILURE);
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}
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if (isdigit(*ac->asn1r_field_ptr)) /* the first letter may not be a digit */
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{
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ALOG_NERR0 ("ASN.1 decode: Identifier cannot start with a digit");
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return (SD_FAILURE);
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}
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for (i = ac->asn1r_elmnt_len; i; --i)
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{
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if ((!(isalnum(*ac->asn1r_field_ptr))) &&
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(!(*ac->asn1r_field_ptr == '_')) &&
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(!(*ac->asn1r_field_ptr == '$')))
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{
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ALOG_NERR1 ("ASN.1 decode: invalid character (0x%02x) in identifier",
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(int) *ac->asn1r_field_ptr);
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return (SD_FAILURE);
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}
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*ptr = (ST_CHAR) *(ac->asn1r_field_ptr++); /* Move character to user buffer. */
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ptr++;
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}
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*ptr = '\x00'; /* Null terminate the visible string. */
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return(SD_SUCCESS); /* If no problelms, return success. */
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}
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