| #define EMIT_ASN_DEBUG 1 |
| #include <REAL.c> |
| #include <ber_codec_prim.c> |
| #include <ber_decoder.c> |
| #include <ber_tlv_length.c> |
| #include <ber_tlv_tag.c> |
| #include <der_encoder.c> |
| #include <constraints.c> |
| |
| static char reconstructed[2][512]; |
| static int reconstr_lens[2]; |
| |
| static int |
| callback(const void *buffer, size_t size, void *app_key) { |
| char *buf = reconstructed[app_key ? 1 : 0]; |
| int *len = &reconstr_lens[app_key ? 1 : 0]; |
| |
| if(*len + size >= sizeof(reconstructed[0])) |
| return -1; |
| |
| memcpy(buf + *len, buffer, size); |
| *len += size; |
| |
| return 0; |
| } |
| |
| static void |
| check_str_repr(double d, const char *sample, const char *canonical_sample) { |
| ssize_t s1, s2; |
| |
| reconstr_lens[1] = reconstr_lens[0] = 0; |
| |
| s1 = REAL__dump(d, 0, callback, 0); |
| assert(s1 < sizeof(reconstructed[0])); |
| assert(s1 == reconstr_lens[0]); |
| reconstructed[0][s1] = '\0'; |
| |
| s2 = REAL__dump(d, 1, callback, (void *)1); |
| assert(s2 < sizeof(reconstructed[1])); |
| assert(s2 == reconstr_lens[1]); |
| reconstructed[1][s2] = '\0'; |
| |
| if(sample) { |
| printf("Checking [%s] against [%s]\n", |
| reconstructed[0], sample); |
| assert(!strcmp(reconstructed[0], sample)); |
| } |
| if(canonical_sample) { |
| printf("Checking [%s] against [%s] (canonical)\n", |
| reconstructed[1], canonical_sample); |
| assert(!strcmp(reconstructed[1], canonical_sample)); |
| } |
| } |
| |
| static void |
| check(REAL_t *rn, double orig_dbl, const char *sample, const char *canonical_sample) { |
| double val; |
| uint8_t *p, *end; |
| int ret; |
| |
| printf("double value %.12f [", orig_dbl); |
| for(p = (uint8_t *)&orig_dbl, end = p + sizeof(double); p < end ; p++) |
| printf("%02x", *p); |
| printf("] (ilogb %d)\n", ilogb(orig_dbl)); |
| |
| val = frexp(orig_dbl, &ret); |
| printf("frexp(%f, %d): [", val, ret); |
| for(p = (uint8_t *)&val, end = p + sizeof(double); p < end ; p++) |
| printf("%02x", *p); |
| printf("]\n"); |
| |
| ret = asn_double2REAL(rn, orig_dbl); |
| assert(ret == 0); |
| |
| printf("converted into ["); |
| for(p = rn->buf, end = p + rn->size; p < end; p++) |
| printf("%02x", *p); |
| printf("]: %d\n", rn->size); |
| |
| ret = asn_REAL2double(rn, &val); |
| assert(ret == 0); |
| |
| printf("and back to double: ["); |
| for(p = (uint8_t *)&val, end = p + sizeof(double); p < end ; p++) |
| printf("%02x", *p); |
| printf("] (ilogb %d)\n", ilogb(val)); |
| |
| printf("%.12f vs %.12f\n", orig_dbl, val); |
| assert(orig_dbl == val || (isnan(orig_dbl) && isnan(val))); |
| printf("OK\n"); |
| |
| check_str_repr(val, sample, canonical_sample); |
| } |
| |
| uint8_t buf_1_0[] = { 0x80, 0xcc, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
| uint8_t buf_1_1[] = { 0x80, 0xcc, 0x11, 0x99, 0x99, 0x99, 0x99, 0x99, 0x9a }; |
| uint8_t buf_3_14[] = { 0x80, 0xcd, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f }; |
| /* These ones are very interesting! It checks mantissa overflow! */ |
| uint8_t buf_mo1[] = { 0xC0, 0xc5, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f,3}; |
| uint8_t buf_mo2[] = { 0x80, 0xbd, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f,3,2}; |
| |
| static void |
| check_buf(uint8_t *buf, size_t bufsize, double verify, const char *sample, const char *canonical_sample) { |
| REAL_t rn; |
| double val; |
| uint8_t *p, *end; |
| int ret; |
| |
| printf("verify double value %.12f [", verify); |
| for(p = (uint8_t *)&verify, end = p + sizeof(double); p < end ; p++) |
| printf("%02x", *p); |
| printf("] (ilogb %d)\n", ilogb(verify)); |
| |
| rn.buf = 0; |
| rn.size = 0; |
| |
| ret = asn_double2REAL(&rn, verify); |
| assert(ret == 0); |
| |
| printf("canonical DER: ["); |
| for(p = rn.buf, end = p + rn.size; p < end; p++) |
| printf("%02x", *p); |
| printf("]\n"); |
| |
| rn.buf = buf; |
| rn.size = bufsize; |
| |
| printf("received as: ["); |
| for(p = rn.buf, end = p + rn.size; p < end; p++) |
| printf("%02x", *p); |
| printf("]\n"); |
| |
| ret = asn_REAL2double(&rn, &val); |
| assert(ret == 0); |
| |
| printf("%.12f vs %.12f\n", verify, val); |
| |
| assert(val == verify); |
| |
| check_str_repr(val, sample, canonical_sample); |
| } |
| |
| int |
| main() { |
| REAL_t rn; |
| static const double zero = 0.0; |
| |
| memset(&rn, 0, sizeof(rn)); |
| |
| check(&rn, 0.0, "0", "0"); |
| check(&rn, -0.0, "-0", "-0"); /* minus-zero */ |
| check(&rn, zero/zero, "<NOT-A-NUMBER/>", "<NOT-A-NUMBER/>"); |
| check(&rn, 1.0/zero, "<PLUS-INFINITY/>", "<PLUS-INFINITY/>"); |
| check(&rn, -1.0/zero, "<MINUS-INFINITY/>", "<MINUS-INFINITY/>"); |
| check(&rn, 1.0, "1.0", "1.0E0"); |
| check(&rn, -1.0, "-1.0", "-1.0E0"); |
| check(&rn, 1.5, "1.5", "1.5E0"); |
| check(&rn, 0.1, "0.1", "1.0E-1"); |
| check(&rn, 0.33333, "0.33333", "3.3333E-1"); |
| check(&rn, 2, "2.0", "2.0E0"); |
| check(&rn, 2.1, "2.1", "2.1E0"); |
| check(&rn, 3, "3.0", "3.0E0"); |
| check(&rn, 3.1, "3.1", "3.1E0"); |
| check(&rn, 3.14, "3.14", "3.14E0"); |
| check(&rn, 3.1415, "3.1415", "3.1415E0"); |
| check(&rn, 3.141592, "3.141592", "3.141592E0"); |
| check(&rn, 3.14159265, "3.14159265", "3.14159265E0"); |
| check(&rn, -3.14159265, "-3.14159265", "-3.14159265E0"); |
| check(&rn, 14159265.0, "14159265.0", "1.4159265E7"); |
| check(&rn, -123456789123456789.0, "-123456789123456784.0", "-1.234567891234568E17"); |
| check(&rn, 0.00000000001, "0.0", "9.999999999999999E-12"); |
| check(&rn, 0.00000000002, "0.0", "2.0E-11"); |
| check(&rn, 0.00000000009, "0.0", "9.0E-11"); |
| check(&rn, 0.0000000000000000000001, "0.0", "1.0E-22"); |
| check(&rn, 0.000000000000000000000000000001, "0.0", "1.0E-30"); /* proved 2B a problem */ |
| check(&rn,-0.000000000000000000000000000001, "-0.0", "-1.0E-30"); /* proved 2B a problem */ |
| check(&rn, 0.0000000000010000000001000000000001, 0, 0); |
| check(&rn, 0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0); |
| check(&rn, 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0); |
| check(&rn,-0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0); |
| check(&rn,-3.33333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333, 0, 0); |
| check(&rn, 0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000033333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333, 0, 0); |
| check(&rn, -0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0); |
| |
| check_buf(buf_1_0, sizeof(buf_1_0), 1.0, "1.0", "1.0E0"); |
| check_buf(buf_1_1, sizeof(buf_1_1), 1.1, "1.1", "1.1E0"); |
| check_buf(buf_3_14, sizeof(buf_3_14), 3.14, "3.14", "3.14E0"); |
| check_buf(buf_mo1, sizeof(buf_mo1), -3.14, "-3.14", "-3.14E0"); |
| check_buf(buf_mo2, sizeof(buf_mo2), 3.14, "3.14", "3.14E0"); |
| |
| return 0; |
| } |