CodeSign Unicode C Reference Documentation
CodeSign
Current Version: 10.1.2
A class for signing Windows executables and DLLs, and for verifying signed executables and DLLs. This is a Windows-only class. The class and functions will exist on non-Windows systems, but will be no-op functions (stubs) that simply return a failed status.
Create/Dispose
HCkCodeSignW instance = CkCodeSignW_Create(); // ... CkCodeSignW_Dispose(instance);
Creates an instance of the HCkCodeSignW object and returns a handle ("void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.
Objects created by calling CkCodeSignW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkCodeSignW_Dispose.
Callback Functions
Provides the opportunity for a method call to be aborted. If TRUE is returned, the operation in progress is aborted. Return FALSE to allow the current method call to continue. This callback function is called periodically based on the value of the HeartbeatMs property. (If HeartbeatMs is 0, then no callbacks are made.) As an example, to make 5 AbortCheck callbacks per second, set the HeartbeatMs property equal to 200.
Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This callback is only called when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For methods that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).
This callback counts as an AbortCheck callback, and takes the place of the AbortCheck event when it fires.
The return value indicates whether the method call should be aborted, or whether it should proceed. Return TRUE to abort, and FALSE to proceed.
This is a general callback that provides name/value information about what is happening at certain points during a method call. To see the information provided in ProgressInfo callbacks, if any, write code to handle this event and log the name/value pairs. Most are self-explanatory.
Called in the background thread when an asynchronous task completes. (Note: When an async method is running, all callbacks are in the background thread.)
Properties
DebugLogFilePath
void CkCodeSignW_putDebugLogFilePath(HCkCodeSignW cHandle, const wchar_t *newVal);
const wchar_t *CkCodeSignW_debugLogFilePath(HCkCodeSignW cHandle);
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
HeartbeatMs
void CkCodeSignW_putHeartbeatMs(HCkCodeSignW cHandle, int newVal);
This property is only valid in programming environment and languages that allow for event callbacks.
Specifies the time interval in milliseconds between AbortCheck events. A value of 0 (the default) indicate that no AbortCheck events will fire. Any HTTP operation can be aborted via the AbortCheck event.
topLastErrorHtml
const wchar_t *CkCodeSignW_lastErrorHtml(HCkCodeSignW cHandle);
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
const wchar_t *CkCodeSignW_lastErrorText(HCkCodeSignW cHandle);
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
const wchar_t *CkCodeSignW_lastErrorXml(HCkCodeSignW cHandle);
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
void CkCodeSignW_putLastMethodSuccess(HCkCodeSignW cHandle, BOOL newVal);
Indicates the success or failure of the most recent method call: TRUE means success, FALSE means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.
topUncommonOptions
void CkCodeSignW_putUncommonOptions(HCkCodeSignW cHandle, const wchar_t *newVal);
const wchar_t *CkCodeSignW_uncommonOptions(HCkCodeSignW cHandle);
This is a catch-all property to be used for uncommon needs. This property defaults to the empty string and should typically remain empty.
Can be set to a list of the following comma separated keywords:
- "codesign-allow-expired-cert" - Don't fail authenticode signature validation because the signing certificate is expired.
VerboseLogging
void CkCodeSignW_putVerboseLogging(HCkCodeSignW cHandle, BOOL newVal);
If set to TRUE, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is FALSE. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
topVersion
const wchar_t *CkCodeSignW_version(HCkCodeSignW cHandle);
Methods
AddSignature
Authenticode signs a DLL or EXE.
Returns TRUE for success, FALSE for failure.
AddSignatureAsync (1)
Creates an asynchronous task to call the AddSignature method with the arguments provided.
Returns NULL on failure
topGetSignerCert
This method retrieves the signer certificate after calling VerifySignature. If successful and the signer certificate is fully available, cert will contain the certificate.
Returns TRUE for success, FALSE for failure.
topRemoveSignature
Removes the authenticode signature of a Windows executable or DLL. The path to the executable/DLL is passed in path.
Returns TRUE for success, FALSE for failure.
VerifySignature
Verifies the signature of a Windows executable or DLL. The path to the executable/DLL is passed in path. Information about the signature is returned in sigInfo. Returns TRUE if the signature is verified indicating the EXE or DLL can be trusted. Otherwise returns FALSE.
Returns TRUE for success, FALSE for failure.