Ejemplos de htp_base64_decode_single en C++ (Cpp)

Ejemplo n.º 1

Archivo: test_utils.cpp Proyecto: brainyhung/libhtp-1

TEST(Base64, Single) {
    EXPECT_EQ(62, htp_base64_decode_single('+'));
    EXPECT_EQ(63, htp_base64_decode_single('/'));
    EXPECT_EQ(-1, htp_base64_decode_single(','));
    EXPECT_EQ(-1, htp_base64_decode_single(0));
    EXPECT_EQ(-1, htp_base64_decode_single('~'));
    EXPECT_EQ(26, htp_base64_decode_single('a'));
    EXPECT_EQ(0, htp_base64_decode_single('A'));
}

Ejemplo n.º 2

Archivo: htp_base64.c Proyecto: B0SB05/ironbee

/**
 * Feed the supplied memory range to the decoder.
 *
 * @param[in] decoder
 * @param[in] _code_in
 * @param[in] length_in
 * @param[in] _plaintext_out
 * @param[in] length_out
 * @return how many bytes were placed into plaintext output
 */
int htp_base64_decode(htp_base64_decoder *decoder, const void *_code_in, int length_in, void *_plaintext_out, int length_out) {
    const unsigned char *code_in = (const unsigned char *)_code_in;
    unsigned char *plaintext_out = (unsigned char *)_plaintext_out;
    const unsigned char *codechar = code_in;
    unsigned char *plainchar = plaintext_out;
    signed char fragment;

    if (length_out <= 0) return 0;

    *plainchar = decoder->plainchar;

    switch (decoder->step) {
            while (1) {
                case step_a:
                do {
                    if (codechar == code_in + length_in) {
                        decoder->step = step_a;
                        decoder->plainchar = *plainchar;
                        return plainchar - plaintext_out;
                    }
                    fragment = (char) htp_base64_decode_single(*codechar++);
                } while (fragment < 0);
                *plainchar = (fragment & 0x03f) << 2;

                case step_b:
                do {
                    if (codechar == code_in + length_in) {
                        decoder->step = step_b;
                        decoder->plainchar = *plainchar;
                        return plainchar - plaintext_out;
                    }
                    fragment = (char) htp_base64_decode_single(*codechar++);
                } while (fragment < 0);
                *plainchar++ |= (fragment & 0x030) >> 4;
                *plainchar = (fragment & 0x00f) << 4;                
                if (--length_out == 0) {
                    return plainchar - plaintext_out;
                }

                case step_c:
                do {
                    if (codechar == code_in + length_in) {
                        decoder->step = step_c;
                        decoder->plainchar = *plainchar;
                        return plainchar - plaintext_out;
                    }
                    fragment = (char) htp_base64_decode_single(*codechar++);
                } while (fragment < 0);
                *plainchar++ |= (fragment & 0x03c) >> 2;
                *plainchar = (fragment & 0x003) << 6;
                if (--length_out == 0) {
                    return plainchar - plaintext_out;
                }

                case step_d:
                do {
                    if (codechar == code_in + length_in) {
                        decoder->step = step_d;
                        decoder->plainchar = *plainchar;
                        return plainchar - plaintext_out;
                    }
                    fragment = (char) htp_base64_decode_single(*codechar++);
                } while (fragment < 0);
                *plainchar++ |= (fragment & 0x03f);
                if (--length_out == 0) {
                    return plainchar - plaintext_out;
                }
            }
    }

    /* control should not reach here */
    return plainchar - plaintext_out;
}