1 /*_############################################################################
6 _## -----------------------------------------------
7 _## Copyright (c) 2001-2010 Jochen Katz, Frank Fock
9 _## This software is based on SNMP++2.6 from Hewlett Packard:
11 _## Copyright (c) 1996
12 _## Hewlett-Packard Company
14 _## ATTENTION: USE OF THIS SOFTWARE IS SUBJECT TO THE FOLLOWING TERMS.
15 _## Permission to use, copy, modify, distribute and/or sell this software
16 _## and/or its documentation is hereby granted without fee. User agrees
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19 _## agrees to assume all liability for the use of the software;
20 _## Hewlett-Packard and Jochen Katz make no representations about the
21 _## suitability of this software for any purpose. It is provided
22 _## "AS-IS" without warranty of any kind, either express or implied. User
23 _## hereby grants a royalty-free license to any and all derivatives based
24 _## upon this software code base.
26 _## Stuttgart, Germany, Thu Sep 2 00:07:47 CEST 2010
28 _##########################################################################*/
29 /*===================================================================
32 Hewlett-Packard Company
34 ATTENTION: USE OF THIS SOFTWARE IS SUBJECT TO THE FOLLOWING TERMS.
35 Permission to use, copy, modify, distribute and/or sell this software
36 and/or its documentation is hereby granted without fee. User agrees
37 to display the above copyright notice and this license notice in all
38 copies of the software and any documentation of the software. User
39 agrees to assume all liability for the use of the software; Hewlett-Packard
40 makes no representations about the suitability of this software for any
41 purpose. It is provided "AS-IS without warranty of any kind,either express
42 or implied. User hereby grants a royalty-free license to any and all
43 derivatives based upon this software code base.
48 OCTETSTR CLASS DEFINITION
50 DESIGN + AUTHOR: Peter E Mellquist
53 This class is fully contained and does not rely on or any other
54 SNMP libraries. This class is portable across any platform
56 =====================================================================*/
57 // $Id: octet.h 1824 2010-08-29 19:47:08Z katz $
62 #include "snmp_pp/smival.h"
64 #ifdef SNMP_PP_NAMESPACE
68 //------------[ SNMP++ OCTETSTR CLASS DEF ]-----------------------------
69 class DLLOPT OctetStr: public SnmpSyntax
74 * Enum for setting the hex output format.
83 //-----------[ Constructors and Destrucotr ]----------------------
86 * Constructs a valid OctetStr with zero length.
91 * Constructs a OctetStr with the given value.
92 * The OctetStr will be valid unless a call to new fails.
94 * @param str - Null terminated string
96 OctetStr(const char *str);
99 * Constructs a OctetStr with the given value.
100 * The OctetStr will be valid unless a call to new fails.
102 * @param str - string that may contain null bytes
103 * @param len - length of the string
105 OctetStr(const unsigned char *str, unsigned long len);
108 * Construct a OctetStr from another OctetStr.
109 * The OctetStr will be valid unless a call to new fails.
111 * @param octet - Value for the new object
113 OctetStr(const OctetStr &octet);
116 * Destructor, frees allocated space.
120 //-----------[ Overloaded operators ]----------------------
123 * Assign a char string to a OctetStr.
125 OctetStr& operator=(const char *str);
128 * Assign a OctetStr to a OctetStr.
130 OctetStr& operator=(const OctetStr &octet);
133 * Equal operator for two OctetStr.
135 DLLOPT friend int operator==(const OctetStr &lhs, const OctetStr &rhs);
138 * Not equal operator for two OctetStr.
140 DLLOPT friend int operator!=(const OctetStr &lhs, const OctetStr &rhs);
143 * Not equal operator for two OctetStr.
145 DLLOPT friend int operator<(const OctetStr &lhs, const OctetStr &rhs);
148 * Less than operator for two OctetStr.
150 DLLOPT friend int operator<=(const OctetStr &lhs,const OctetStr &rhs);
153 * Greater than operator for two OctetStr.
155 DLLOPT friend int operator>(const OctetStr &lhs, const OctetStr &rhs);
158 * Greater than or equal operator for two OctetStr.
160 DLLOPT friend int operator>=(const OctetStr &lhs, const OctetStr &rhs);
163 * Equal operator for OctetStr and char string.
165 DLLOPT friend int operator==(const OctetStr &lhs, const char *rhs);
168 * Not equal operator for OctetStr and char string.
170 DLLOPT friend int operator!=(const OctetStr &lhs, const char *rhs);
173 * Less than operator for OctetStr and char string.
175 DLLOPT friend int operator<(const OctetStr &lhs, const char *rhs);
178 * Less than or equal operator for OctetStr and char string.
180 DLLOPT friend int operator<=(const OctetStr &lhs, const char *rhs);
183 * Greater than operator for OctetStr and char string.
185 DLLOPT friend int operator>(const OctetStr &lhs, const char *rhs);
188 * Greater than or equal operator for OctetStr and char string.
190 DLLOPT friend int operator>=(const OctetStr &lhs, const char *rhs);
193 * Append a char string to this OctetStr.
195 OctetStr& operator+=(const char *a);
198 * Append a single char to this OctetStr.
200 OctetStr& operator+=(const unsigned char c);
203 * Append another OctetStr to this OctetStr.
205 OctetStr& operator+=(const OctetStr& octet);
208 * Allow access as if it was an array.
210 * @note The given param is not checked for validity.
212 unsigned char &operator[](int i)
213 { m_changed = true; return smival.value.string.ptr[i]; };
216 * Allow access as if it was an array for const OctetStr objects.
218 * @note The given param is not checked for validity.
220 unsigned char operator[](int i) const { return smival.value.string.ptr[i]; };
225 * @return This method always returns sNMP_SYNTAX_OCTETS.
227 SmiUINT32 get_syntax() const { return sNMP_SYNTAX_OCTETS; };
230 * Return the space needed for serialization.
232 int get_asn1_length() const;
235 * Return validity of the object.
237 bool valid() const { return validity; };
242 * @return Pointer to the newly created object (allocated through new).
244 SnmpSyntax *clone() const { return (SnmpSyntax *) new OctetStr(*this); };
247 * Map other SnmpSyntax objects to OctetStr.
249 SnmpSyntax& operator=(const SnmpSyntax &val);
252 * Get a printable ASCII value of the string.
254 * @note Depending on the selected output format, this method will
255 * return get_printable_hex() or get_printable_clear() if the
256 * string contains not printable characters.
258 * @return Printable, null terminated string
260 const char *get_printable() const;
263 * Get an ASCII formatted hex dump of the contents.
264 * If the output format was set to OctetStr::OutputHexAndClear,
265 * the produced string of this method will look like this:
267 * 09 4F 63 74 65 74 53 74 72 3A 3A 67 65 74 5F 70 .OctetStr::get_p
268 * 72 69 6E 74 61 62 6C 65 5F 68 65 78 28 29 rintable_hex()
270 * If the output format was set to OctetStr::OutputHex the
271 * produced string will look like this:
273 * 09 4F 63 74 65 74 53 74 72 3A 3A 67 65 74 5F 70
274 * 72 69 6E 74 61 62 6C 65 5F 68 65 78 28 29
276 * @return Printable, null terminated string.
278 const char *get_printable_hex() const;
281 * Get the contents with all non printable characters replaced.
283 * @return Printable, null terminated string.
285 const char *get_printable_clear() const;
288 * Set the output format for get_pritable_hex().
290 static void set_hex_output_type(const enum OutputType ot)
291 { hex_output_type = ot; };
294 * Set the char get_printable_hex() and get_printable_clear()
295 * will use for non printable characters.
297 static void set_np_char(const char np) { nonprintable_char = np; };
300 * Set the data on an already constructed OctetStr.
301 * The given string is copied to an internal member var, so the
302 * params can be destroyed afterwards.
304 * @param str - The new string value
305 * @param len - Length of the given string
307 void set_data(const unsigned char *str, unsigned long len);
310 * Get the length of the string.
312 unsigned long len() const { return smival.value.string.len; };
315 * Get a pointer to internal data.
317 unsigned char *data() const { return smival.value.string.ptr; };
319 // compare n elements of an octet
320 int nCompare(const unsigned long n, const OctetStr &o) const;
323 * Build an OctetStr from a hex string.
324 * Called with "5465 737469 6e672074686973206D657468 6f 64 21"
325 * the returned value will be "Testing this method!"
327 * @param hex_string - The hex string (may contain spaces)
328 * @return created string
330 static OctetStr from_hex_string(const OctetStr &hex_string);
333 * Set the character for linefeeds in get_printable() functions.
335 * The default linefeeds are \n for Unix and \r\n on other systems.
337 * @param lf_chars - string less than 3 bytes
338 * @return true on success
340 static bool set_linefeed_chars(const char* lf_chars);
343 * Null out the contents of the string. The string will be empty
344 * after calling this method
349 * Append or shorten the internal data buffer.
351 * The buffer will either be shortened or extended. In the second case
352 * zeroes are added to the end of the string.
354 * @param new_len - The new length for the string
355 * @return true on success
357 bool set_len(const unsigned long new_len);
363 OutputFunctionDefault,
368 SNMP_PP_MUTABLE char *output_buffer; // formatted Octet value
369 SNMP_PP_MUTABLE unsigned int output_buffer_len; // allocated space for string
370 SNMP_PP_MUTABLE bool m_changed;
371 SNMP_PP_MUTABLE enum OutputType output_last_type;
372 SNMP_PP_MUTABLE char output_last_np_char;
373 SNMP_PP_MUTABLE enum OutputFunction output_last_function;
376 bool validity; // validity boolean
378 static enum OutputType hex_output_type;
379 static char nonprintable_char;
380 static char linefeed_chars[3];
383 //-----------[ End OctetStr Class ]-------------------------------------
386 * The OpaqueStr class represents the Opaque SNMP type. It is derived from
387 * the SNMP++ class OctetStr and has the same interfaces and behavior,
388 * except that its syntax is sNMP_SYNTAX_OPAQUE.
390 class OpaqueStr: public OctetStr
394 * Constructor creating a valid zero length OpaqueStr.
396 OpaqueStr(): OctetStr()
397 { smival.syntax = sNMP_SYNTAX_OPAQUE; };
400 * Constructs a OpaqueStr with the given value.
401 * The OpaqueStr will be valid unless a call to new fails.
403 * @param str - Null terminated string
405 OpaqueStr(const char *str) : OctetStr(str)
406 { smival.syntax = sNMP_SYNTAX_OPAQUE; };
409 * Constructs a OpaqueStr with the given value.
410 * The OpaqueStr will be valid unless a call to new fails.
412 * @param str - string that may contain null bytes
413 * @param len - length of the string
415 OpaqueStr(const unsigned char *str, unsigned long length)
416 : OctetStr(str, length) { smival.syntax = sNMP_SYNTAX_OPAQUE; };
419 * Construct a OpaqueStr from an OctetStr.
420 * The OpaqueStr will be valid unless a call to new fails.
422 * @param octet - Value for the new object
424 OpaqueStr(const OctetStr &octet) : OctetStr(octet)
425 { smival.syntax = sNMP_SYNTAX_OPAQUE; };
428 * Construct a OpaqueStr from another OpaqueStr.
429 * The OpaqueStr will be valid unless a call to new fails.
431 * @param opaque - Value for the new object
433 OpaqueStr(const OpaqueStr& opaque) : OctetStr(opaque)
434 { smival.syntax = sNMP_SYNTAX_OPAQUE; };
439 * @return Pointer to the newly created object (allocated through new).
441 virtual SnmpSyntax *clone() const { return new OpaqueStr(*this); }
446 * @return This method always returns sNMP_SYNTAX_OPAQUE.
448 virtual SmiUINT32 get_syntax() const { return sNMP_SYNTAX_OPAQUE; };
451 * Map other SnmpSyntax objects to OpaqueStr.
453 SnmpSyntax& operator=(const SnmpSyntax &val)
454 { return OctetStr::operator=(val); }
458 #ifdef SNMP_PP_NAMESPACE
459 } // end of namespace Snmp_pp