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Version 2.7.x
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Context initialization functions handle the allocation, initialization, and destruction of context variables (variables of type OSCTXT). More...
Classes | |
struct | OSRTErrLocn |
Run-time error location structure. More... | |
struct | OSRTErrInfo |
Run-time error information structure. More... | |
struct | OSRTBuffer |
Run-time message buffer structure. More... | |
struct | OSRTBufSave |
Structure to save the current message buffer state. More... | |
struct | OSBufferIndex |
This structure can be used as an index into the buffer. More... | |
struct | OSCTXT |
Run-time context structure. More... | |
Macros | |
#define | OSNOWHITESPACE 0x00400000 /* Turn off indentation whitesapce */ |
Turn off unnecessary whitespace in text output. More... | |
#define | rtxCtxtGetMsgPtr(pctxt) (pctxt)->buffer.data |
This macro returns the start address of an encoded message. More... | |
#define | rtxCtxtGetMsgLen(pctxt) (pctxt)->buffer.byteIndex |
This macro returns the length of an encoded message. More... | |
#define | rtxCtxtTestFlag(pctxt, mask) (((pctxt)->flags & mask) != 0) |
This macro tests if the given bit flag is set in the context. More... | |
#define | rtxCtxtPeekElemName(pctxt) |
This macro returns the last element name from the context stack. More... | |
#define | rtxByteAlign(pctxt) |
This macro will byte-align the context buffer. | |
#define | rtxCtxtSetProtocolVersion(pctxt, value) (pctxt)->version = value |
This macro sets the protocol version in the context. More... | |
Typedefs | |
typedef int(* | OSFreeCtxtAppInfoPtr) (struct OSCTXT *pctxt) |
OSRTFreeCtxtAppInfoPtr is a pointer to pctxt->pAppInfo free function, The pctxt->pAppInfo (pXMLInfo and pASN1Info) should contain the pointer to a structure and its first member should be a pointer to an appInfo free function. | |
typedef int(* | OSResetCtxtAppInfoPtr) (struct OSCTXT *pctxt) |
OSRTResetCtxtAppInfoPtr is a pointer to pctxt->pAppInfo reset function, The pctxt->pAppInfo (pXMLInfo and pASN1Info) should contain the pointer to a structure and its second member should be a pointer to appInfo reset function. | |
typedef void(* | OSFreeCtxtGlobalPtr) (struct OSCTXT *pctxt) |
OSRTFreeCtxtGlobalPtr is a pointer to a memory free function. More... | |
Functions | |
EXTERNRT int | rtxInitContext (OSCTXT *pctxt) |
This function initializes an OSCTXT block. More... | |
EXTERNRT int | rtxInitContextExt (OSCTXT *pctxt, OSMallocFunc malloc_func, OSReallocFunc realloc_func, OSFreeFunc free_func) |
This function initializes an OSCTXT block. More... | |
EXTERNRT int | rtxInitThreadContext (OSCTXT *pctxt, const OSCTXT *pSrcCtxt) |
This function initializes a context for use in a thread. More... | |
EXTERNRT int | rtxInitContextUsingKey (OSCTXT *pctxt, const OSOCTET *key, OSSIZE keylen) |
This function initializes a context using a run-time key. More... | |
EXTERNRT int | rtxInitContextBuffer (OSCTXT *pctxt, OSOCTET *bufaddr, OSSIZE bufsiz) |
This function assigns a message buffer to a context block. More... | |
EXTERNRT int | rtxCtxtSetBufPtr (OSCTXT *pctxt, OSOCTET *bufaddr, OSSIZE bufsiz) |
This function is used to set the internal buffer pointer for in-memory encoding or decoding. More... | |
EXTERNRT OSSIZE | rtxCtxtGetBitOffset (OSCTXT *pctxt) |
This function returns the total bit offset to the current element in the context buffer. More... | |
EXTERNRT int | rtxCtxtSetBitOffset (OSCTXT *pctxt, OSSIZE offset) |
This function sets the bit offset in the context to the given value. More... | |
EXTERNRT OSSIZE | rtxCtxtGetIOByteCount (OSCTXT *pctxt) |
This function returns the count of bytes either written to a stream or memory buffer. More... | |
EXTERNRT int | rtxCheckContext (OSCTXT *pctxt) |
This function verifies that the given context structure is initialized and ready for use. More... | |
EXTERNRT void | rtxFreeContext (OSCTXT *pctxt) |
This function frees all dynamic memory associated with a context. More... | |
EXTERNRT void | rtxCopyContext (OSCTXT *pdest, OSCTXT *psrc) |
This function creates a copy of a context structure. More... | |
EXTERNRT void | rtxCtxtSetFlag (OSCTXT *pctxt, OSUINT32 mask) |
This function is used to set a processing flag within the context structure. More... | |
EXTERNRT void | rtxCtxtClearFlag (OSCTXT *pctxt, OSUINT32 mask) |
This function is used to clear a processing flag within the context structure. More... | |
EXTERNRT int | rtxCtxtPushArrayElemName (OSCTXT *pctxt, const OSUTF8CHAR *elemName, OSSIZE idx) |
This function is used to push an array element name onto the context element name stack. More... | |
EXTERNRT int | rtxCtxtPushElemName (OSCTXT *pctxt, const OSUTF8CHAR *elemName) |
This function is used to push an element name onto the context element name stack. More... | |
EXTERNRT int | rtxCtxtPushElemNameCopy (OSCTXT *pctxt, const OSUTF8CHAR *elemName) |
This function is used to push a copy of the given element name onto the context element name stack. More... | |
EXTERNRT int | rtxCtxtPushTypeName (OSCTXT *pctxt, const OSUTF8CHAR *typeName) |
This function is used to push a type name onto the context element name stack. More... | |
EXTERNRT OSBOOL | rtxCtxtPopArrayElemName (OSCTXT *pctxt) |
This function pops the last element name from the context stack. More... | |
EXTERNRT const OSUTF8CHAR * | rtxCtxtPopElemName (OSCTXT *pctxt) |
This function pops the last element name from the context stack. More... | |
EXTERNRT void | rtxCtxtPopElemNameCopy (OSCTXT *pctxt) |
This function pops the last element name from the context stack and frees the associated memory. More... | |
EXTERNRT const OSUTF8CHAR * | rtxCtxtPopTypeName (OSCTXT *pctxt) |
This function pops the type name from the context stack. More... | |
EXTERNRT OSBOOL | rtxCtxtContainerHasRemBits (OSCTXT *pctxt) |
Return true iff there are bits remaining to be decoded in the current length-constrained container, which is possibly the outer PDU. More... | |
EXTERNRT OSBOOL | rtxCtxtContainerEnd (OSCTXT *pctxt) |
Return true if we are at the end of container - neither having more bits remaining nor having overrun it; otherwise return false. More... | |
EXTERNRT OSSIZE | rtxCtxtGetContainerRemBits (OSCTXT *pctxt) |
Return the number of bits remaining to be decoded in the current length-constrained container, which is possibly the outer PDU. More... | |
EXTERNRT int | rtxCtxtPushContainerBytes (OSCTXT *pctxt, OSSIZE bytes) |
Notify the runtime layer of the start of decoding of a length-constrained container of a given length. More... | |
EXTERNRT int | rtxCtxtPushContainerBits (OSCTXT *pctxt, OSSIZE bits) |
Notify the runtime layer of the start of decoding of a length-constrained container of a given length. More... | |
EXTERNRT void | rtxCtxtPopContainer (OSCTXT *pctxt) |
Notify the runtime layer of the end of decoding of a length-constrained container of the given length. More... | |
EXTERNRT void | rtxCtxtPopAllContainers (OSCTXT *pctxt) |
Pop all containers from the container stack. More... | |
EXTERNRT void | rtxMemHeapSetFlags (OSCTXT *pctxt, OSUINT32 flags) |
This function sets flags to a heap. More... | |
EXTERNRT void | rtxMemHeapClearFlags (OSCTXT *pctxt, OSUINT32 flags) |
This function clears memory heap flags. More... | |
EXTERNRT int | rtxMarkPos (OSCTXT *pctxt, OSSIZE *ppos) |
This function saves the current position in a message buffer or stream. More... | |
EXTERNRT int | rtxResetToPos (OSCTXT *pctxt, OSSIZE pos) |
This function resets a message buffer or stream back to the given position. More... | |
EXTERNRT const char * | rtxCtxtGetExpDateStr (OSCTXT *pctxt, char *buf, OSSIZE bufsiz) |
This function will get the license expiration date for a time-limited license. More... | |
EXTERNRT void | rtxLicenseClose (void) |
Finish with current license and free internal resources. More... | |
Context initialization functions handle the allocation, initialization, and destruction of context variables (variables of type OSCTXT).
These variables hold all of the working data used during the process of encoding or decoding a message. The context provides thread safe operation by isolating what would otherwise be global variables within this structure. The context variable is passed from function to function as a message is encoded or decoded and maintains state information on the encoding or decoding process.
#define OSNOWHITESPACE 0x00400000 /* Turn off indentation whitesapce */ |
Turn off unnecessary whitespace in text output.
Currently, this affects Abstract Value Notation and JSON (JER) output.
Definition at line 149 of file rtxContext.h.
#define rtxCtxtGetMsgLen | ( | pctxt | ) | (pctxt)->buffer.byteIndex |
This macro returns the length of an encoded message.
It will only work for in-memory encoding, not for encode to stream.
Note that this macro will not work with ASN.1 BER in-memory encoding. In this case, the BER-specific version of the function must be used.
pctxt | Pointer to a context structure. |
Definition at line 462 of file rtxContext.h.
#define rtxCtxtGetMsgPtr | ( | pctxt | ) | (pctxt)->buffer.data |
This macro returns the start address of an encoded message.
If a static buffer was used, this is simply the start address of the buffer. If dynamic encoding was done, this will return the start address of the dynamic buffer allocated by the encoder.
Note that this macro will not work with ASN.1 BER in-memory encoding. In this case, the BER-specific version of the function must be used.
pctxt | Pointer to a context structure. |
Definition at line 451 of file rtxContext.h.
#define rtxCtxtPeekElemName | ( | pctxt | ) |
This macro returns the last element name from the context stack.
pctxt | Pointer to a context structure. |
Definition at line 660 of file rtxContext.h.
#define rtxCtxtSetProtocolVersion | ( | pctxt, | |
value | |||
) | (pctxt)->version = value |
This macro sets the protocol version in the context.
This version number may be used in application code to do version specific operations. It is used in generated ASN.1 code with the extension addition version numbers to determine if an addition should be decoded.
For example, if this value is set to 8 and an extension addition group exists with version number 9 ([[ 9: ... ]]), its contents will not be decoded.
pctxt | Pointer to a context structure. |
value | The version number value. |
Definition at line 829 of file rtxContext.h.
#define rtxCtxtTestFlag | ( | pctxt, | |
mask | |||
) | (((pctxt)->flags & mask) != 0) |
This macro tests if the given bit flag is set in the context.
pctxt | - A pointer to a context structure. |
mask | - Bit flag to be tested |
Definition at line 547 of file rtxContext.h.
typedef void(* OSFreeCtxtGlobalPtr) (struct OSCTXT *pctxt) |
OSRTFreeCtxtGlobalPtr is a pointer to a memory free function.
This type describes the custom global memory free function generated by the compiler to free global nmemory. A pointer to a function of this type may be stored in the context gblFreeFunc field in order to free global data (pGlobalData) when rtxFreeContext is called.
Definition at line 175 of file rtxContext.h.
EXTERNRT int rtxCheckContext | ( | OSCTXT * | pctxt | ) |
This function verifies that the given context structure is initialized and ready for use.
pctxt | Pointer to a context structure. |
This function creates a copy of a context structure.
The copy is a "shallow copy" (i.e. new copies of dynamic memory blocks held within the context are not made, only the pointers are transferred to the new context structure). This function is mainly for use from within compiler-generated code.
pdest | - Context structure to which data is to be copied. |
psrc | - Context structure from which data is to be copied. |
EXTERNRT void rtxCtxtClearFlag | ( | OSCTXT * | pctxt, |
OSUINT32 | mask | ||
) |
This function is used to clear a processing flag within the context structure.
pctxt | - A pointer to a context structure. |
mask | - Mask containing bit(s) to be cleared. |
EXTERNRT OSBOOL rtxCtxtContainerEnd | ( | OSCTXT * | pctxt | ) |
Return true if we are at the end of container - neither having more bits remaining nor having overrun it; otherwise return false.
Overflowing the container should only be possible when a container length has been pushed onto the container stack, since the runtime doesn't allow going beyond the end of the buffer.
See also rtxCtxtPushContainer(Bits|Bytes)/rtxCtxtPopContainer
pctxt | Pointer to context structure. |
EXTERNRT OSBOOL rtxCtxtContainerHasRemBits | ( | OSCTXT * | pctxt | ) |
Return true iff there are bits remaining to be decoded in the current length-constrained container, which is possibly the outer PDU.
See also rtxCtxtPushContainer(Bits|Bytes)/rtxCtxtPopContainer
pctxt | Pointer to context structure. |
EXTERNRT OSSIZE rtxCtxtGetBitOffset | ( | OSCTXT * | pctxt | ) |
This function returns the total bit offset to the current element in the context buffer.
pctxt | Pointer to a context structure. |
EXTERNRT OSSIZE rtxCtxtGetContainerRemBits | ( | OSCTXT * | pctxt | ) |
Return the number of bits remaining to be decoded in the current length-constrained container, which is possibly the outer PDU.
See also rtxCtxtPushContainer(Bits|Bytes)/rtxCtxtPopContainer
pctxt | Pointer to context structure. |
EXTERNRT const char* rtxCtxtGetExpDateStr | ( | OSCTXT * | pctxt, |
char * | buf, | ||
OSSIZE | bufsiz | ||
) |
This function will get the license expiration date for a time-limited license.
pctxt | Pointer to a context block. |
buf | Buffer to receive date string. |
bufsiz | Size of the buffer. |
EXTERNRT OSSIZE rtxCtxtGetIOByteCount | ( | OSCTXT * | pctxt | ) |
This function returns the count of bytes either written to a stream or memory buffer.
pctxt | Pointer to a context structure. |
EXTERNRT void rtxCtxtPopAllContainers | ( | OSCTXT * | pctxt | ) |
Pop all containers from the container stack.
This is useful for clearing the stack when an error has occured. It is invoked automatically by rtxErrReset.
pctxt | Pointer to context structure. |
EXTERNRT OSBOOL rtxCtxtPopArrayElemName | ( | OSCTXT * | pctxt | ) |
This function pops the last element name from the context stack.
This name is assumed to be an array element name pushed by the rtxCtxtPushArrayElemName function. The name is therefore dynamic and memory is freed for it using the rtxMemFreePtr function.
pctxt | Pointer to a context structure. |
EXTERNRT void rtxCtxtPopContainer | ( | OSCTXT * | pctxt | ) |
Notify the runtime layer of the end of decoding of a length-constrained container of the given length.
This method should be called when the final bit to be decoded has been decoded.
This pops an entry off of pctxt->containerEndIndex
pctxt | Pointer to context structure. |
EXTERNRT const OSUTF8CHAR* rtxCtxtPopElemName | ( | OSCTXT * | pctxt | ) |
This function pops the last element name from the context stack.
pctxt | Pointer to a context structure. |
EXTERNRT void rtxCtxtPopElemNameCopy | ( | OSCTXT * | pctxt | ) |
This function pops the last element name from the context stack and frees the associated memory.
It is assumed it was added to the stack using the rtxCtxtPushElemNameCopy function.
pctxt | Pointer to a context structure. |
EXTERNRT const OSUTF8CHAR* rtxCtxtPopTypeName | ( | OSCTXT * | pctxt | ) |
This function pops the type name from the context stack.
The name is only popped if the item count is one.
pctxt | Pointer to a context structure. |
EXTERNRT int rtxCtxtPushArrayElemName | ( | OSCTXT * | pctxt, |
const OSUTF8CHAR * | elemName, | ||
OSSIZE | idx | ||
) |
This function is used to push an array element name onto the context element name stack.
The name is formed by combining the given element name with the index to create a name of format name[index]. Dynamic memory is allocated for the resulting name using the rtxMemAlloc function.
pctxt | Pointer to a context structure. |
elemName | Name of element to be pushed on stack. |
idx | Index or the array element. |
EXTERNRT int rtxCtxtPushContainerBits | ( | OSCTXT * | pctxt, |
OSSIZE | bits | ||
) |
Notify the runtime layer of the start of decoding of a length-constrained container of a given length.
This method should be called when the next bit to be decoded is the first bit of the length-constrained content.
This pushes an entry onto pctxt->containerEndIndex.
pctxt | Pointer to context structure. |
bits | Number of bits in the length-constrained container. |
EXTERNRT int rtxCtxtPushContainerBytes | ( | OSCTXT * | pctxt, |
OSSIZE | bytes | ||
) |
Notify the runtime layer of the start of decoding of a length-constrained container of a given length.
This method should be called when the next bit to be decoded is the first bit of the length-constrained content.
This pushes an entry onto pctxt->containerEndIndex.
pctxt | Pointer to context structure. |
bytes | Number of bytes of the length-constrained container. |
EXTERNRT int rtxCtxtPushElemName | ( | OSCTXT * | pctxt, |
const OSUTF8CHAR * | elemName | ||
) |
This function is used to push an element name onto the context element name stack.
pctxt | Pointer to a context structure. |
elemName | Name of element to be pushed on stack. Note that a copy of the name is not made, the pointer to the name that is passed is stored. |
EXTERNRT int rtxCtxtPushElemNameCopy | ( | OSCTXT * | pctxt, |
const OSUTF8CHAR * | elemName | ||
) |
This function is used to push a copy of the given element name onto the context element name stack.
A copy of the element name is made using context memory management. The name should be popped using the rtxCtxtPopElemNameCopy function to ensure memory is freed.
pctxt | Pointer to a context structure. |
elemName | Name of element to be pushed on stack. A copy of the name is made. |
EXTERNRT int rtxCtxtPushTypeName | ( | OSCTXT * | pctxt, |
const OSUTF8CHAR * | typeName | ||
) |
This function is used to push a type name onto the context element name stack.
The name is only added for the top-level type. This is determined by testing to ensure that there are no existing names on the stack.
pctxt | Pointer to a context structure. |
typeName | Name of type to be pushed on stack. Note that a copy of the name is not made, the pointer to the name that is passed is stored. |
EXTERNRT int rtxCtxtSetBitOffset | ( | OSCTXT * | pctxt, |
OSSIZE | offset | ||
) |
This function sets the bit offset in the context to the given value.
pctxt | Pointer to a context structure. |
offset | Bit offset. |
EXTERNRT int rtxCtxtSetBufPtr | ( | OSCTXT * | pctxt, |
OSOCTET * | bufaddr, | ||
OSSIZE | bufsiz | ||
) |
This function is used to set the internal buffer pointer for in-memory encoding or decoding.
It must be called after the context variable is initialized before any other compiler generated or run-time library encode function.
pctxt | Pointer to a context structure. This provides a storage area for the function to store all working variables that must be maintained between function calls. |
bufaddr | A pointer to a memory buffer to use to encode a message or that holds a message to be decoded. The buffer should be declared as an array of unsigned characters (OCTETs). This parameter can be set to NULL to specify dynamic encoding (i.e., the encode functions will dynamically allocate a buffer to hold the encoded message). |
bufsiz | The length of the memory buffer in bytes. Should be set to zero if NULL was specified for bufaddr (i.e. dynamic encoding was selected). |
EXTERNRT void rtxCtxtSetFlag | ( | OSCTXT * | pctxt, |
OSUINT32 | mask | ||
) |
This function is used to set a processing flag within the context structure.
pctxt | - A pointer to a context structure. |
mask | - Mask containing bit(s) to be set. |
EXTERNRT void rtxFreeContext | ( | OSCTXT * | pctxt | ) |
This function frees all dynamic memory associated with a context.
This includes all memory allocated using the rtxMem functions using the given context parameter.
pctxt | Pointer to a context structure. |
EXTERNRT int rtxInitContext | ( | OSCTXT * | pctxt | ) |
This function initializes an OSCTXT block.
It sets all key working parameters to their correct initial state values. It is required that this function be invoked before using a context variable.
pctxt | Pointer to the context structure variable to be initialized. |
EXTERNRT int rtxInitContextBuffer | ( | OSCTXT * | pctxt, |
OSOCTET * | bufaddr, | ||
OSSIZE | bufsiz | ||
) |
This function assigns a message buffer to a context block.
The block should have been previously initialized by rtxInitContext.
pctxt | The pointer to the context structure variable to be initialized. |
bufaddr | For encoding, the address of a memory buffer to receive the encoded message. If this address is NULL (0), encoding to a dynamic buffer will be done. For decoding, the address of a buffer that contains the message data to be decoded. |
bufsiz | The size of the memory buffer. For encoding, this argument may be set to zero to indicate a dynamic memory buffer should be used. |
EXTERNRT int rtxInitContextExt | ( | OSCTXT * | pctxt, |
OSMallocFunc | malloc_func, | ||
OSReallocFunc | realloc_func, | ||
OSFreeFunc | free_func | ||
) |
This function initializes an OSCTXT block.
It sets all key working parameters to their correct initial state values. It is required that this function be invoked before using a context variable.
pctxt | Pointer to the context structure variable to be initialized. |
malloc_func | Pointer to the memory allocation function. |
realloc_func | Pointer to the memory reallocation function. |
free_func | Pointer to the memory deallocation function. |
EXTERNRT int rtxInitContextUsingKey | ( | OSCTXT * | pctxt, |
const OSOCTET * | key, | ||
OSSIZE | keylen | ||
) |
This function initializes a context using a run-time key.
This form is required for evaluation and limited distribution software. The compiler will generate a macro for rtXmlInitContext in the rtkey.h file that will invoke this function with the generated run-time key.
pctxt | The pointer to the context structure variable to be initialized. |
key | Key data generated by ASN1C compiler. |
keylen | Key data field length. |
This function initializes a context for use in a thread.
It is the same as rtxInitContext except that it copies the pointer to constant data from the given source context into the newly initialized thread context. It is assumed that the source context has been initialized and the custom generated global initialization function has been called. The main purpose of this function is to prevent multiple copies of global static data from being created within different threads.
pctxt | Pointer to the context structure variable to be initialized. |
pSrcCtxt | Pointer to source context which has been fully initialized including a pointer to global constant data initialized via a call to a generated 'Init_<project>_Global' function. |
EXTERNRT void rtxLicenseClose | ( | void | ) |
Finish with current license and free internal resources.
To avoid crashing your application:
EXTERNRT int rtxMarkPos | ( | OSCTXT * | pctxt, |
OSSIZE * | ppos | ||
) |
This function saves the current position in a message buffer or stream.
pctxt | Pointer to a context block. |
ppos | Pointer to saved position. |
EXTERNRT void rtxMemHeapClearFlags | ( | OSCTXT * | pctxt, |
OSUINT32 | flags | ||
) |
This function clears memory heap flags.
pctxt | Pointer to a memory block structure that contains the list of dynamic memory block maintained by these functions. |
flags | The flags |
EXTERNRT void rtxMemHeapSetFlags | ( | OSCTXT * | pctxt, |
OSUINT32 | flags | ||
) |
This function sets flags to a heap.
May be used to control the heap's behavior.
pctxt | Pointer to a memory block structure that contains the list of dynamic memory block maintained by these functions. |
flags | The flags. |
EXTERNRT int rtxResetToPos | ( | OSCTXT * | pctxt, |
OSSIZE | pos | ||
) |
This function resets a message buffer or stream back to the given position.
pctxt | Pointer to a context block. |
pos | Context position. |