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(Unicode C) XML Inclusive CanonicalizationDemonstrates how to convert XML to the Inclusive XML Canonicalization form as specified in http://www.w3.org/TR/xml-c14n/
#include <C_CkHttpW.h> #include <C_CkStringBuilderW.h> #include <C_CkXmlDSigW.h> void ChilkatSample(void) { HCkHttpW http; HCkStringBuilderW sbXml; HCkXmlDSigW canon; const wchar_t *canonVersion; BOOL withComments; const wchar_t *url; BOOL success; const wchar_t *xmlInclCanon; const wchar_t *xmlExclCanon; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // The XML digital signature verification class provides utility methods for // XML canonicalization. This example demonstrates how to do inclusive XML canonicalization. http = CkHttpW_Create(); sbXml = CkStringBuilderW_Create(); canon = CkXmlDSigW_Create(); // Use inclusive XML canonicalization. canonVersion = L"C14N"; withComments = FALSE; url = L"https://www.chilkatsoft.com/exampleData/c14n/test7.xml"; success = CkHttpW_QuickGetSb(http,url,sbXml); // This is the input XML: // The XML comment is referring to when exclusive XML canonicalization is applied. With inclusive canonicalization, the namespace nodes // are kept, as we'll see below.. // <doc> // <!-- A namespace node N is ignored if the nearest ancestor element of the node's parent element that is in the node-set has a namespace node in the node-set with the same local name and value as N. --> // <animal xmlns:aa="https://www.animal.com/"> // <reptile xmlns:bb="https://www.reptile.com/"> // <lizard xmlns="" type="african fat tailed" abc="xyz" xmlns:aa="https://www.animal.com/" /> // <snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" > // </snake> // </reptile> // </animal> // </doc> xmlInclCanon = CkXmlDSigW_canonicalizeXml(canon,CkStringBuilderW_getAsString(sbXml),canonVersion,withComments); wprintf(L"%s\n",xmlInclCanon); // The C14N (inclusive) canonicalization is: // <doc> // // <animal xmlns:aa="https://www.animal.com/"> // <reptile xmlns:bb="https://www.reptile.com/"> // <lizard abc="xyz" type="african fat tailed"></lizard> // <snake type="poisonous rattler"> // </snake> // </reptile> // </animal> // </doc> // To see the difference, let's do exclusive canonicalization.. canonVersion = L"EXCL_C14N"; xmlExclCanon = CkXmlDSigW_canonicalizeXml(canon,CkStringBuilderW_getAsString(sbXml),canonVersion,withComments); wprintf(L"%s\n",xmlExclCanon); // // The C14N (exclusive) canonicalization is: // // <doc> // // <animal> // <reptile> // <lizard abc="xyz" type="african fat tailed"></lizard> // <snake type="poisonous rattler"> // </snake> // </reptile> // </animal> // </doc> CkHttpW_Dispose(http); CkStringBuilderW_Dispose(sbXml); CkXmlDSigW_Dispose(canon); } |
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