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add base64-encode functionality and bif.

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This allows replacing an ugly openssl-call from one of
the policy scripts. The openssl call is now replaced with
a still-but-less-ugly call to base64_encode.

I do not know if I split the Base64 classes in a "smart" way... :)
This commit is contained in:
Bernhard Amann 2013-03-05 16:05:07 -08:00
parent a2556642e6
commit 5e8e12182a
5 changed files with 158 additions and 21 deletions
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26
src/Base64.h
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@ -11,7 +11,23 @@
// Maybe we should have a base class for generic decoders?
class Base64Decoder {
class Base64 {
public:
protected:
static const string default_alphabet;
};
class Base64Encoder : public Base64 {
public:
Base64Encoder(const string& arg_alphabet = "");
void Encode(int len, const unsigned char* data, int* blen, char** buf);
protected:
string alphabet;
};
class Base64Decoder : public Base64 {
public:
// <analyzer> is used for error reporting, and it should be zero when
// the decoder is called by the built-in function decode_base64().
@ -51,19 +67,19 @@ protected:
char error_msg[256];
protected:
static int* InitBase64Table(const string& alphabet);
static int default_base64_table[256];
char base64_group[4];
int base64_group_next;
int base64_padding;
int base64_after_padding;
int* base64_table;
int errored; // if true, we encountered an error - skip further processing
Analyzer* analyzer;
int* base64_table;
static int* InitBase64Table(const string& alphabet);
static int default_base64_table[256];
static const string default_alphabet;
};
BroString* decode_base64(const BroString* s, const BroString* a = 0);
BroString* encode_base64(const BroString* s, const BroString* a = 0);
#endif /* base64_h */