diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/asn1/a_gentm.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/asn1/a_gentm.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/asn1/a_gentm.c b/openssl-1.1.0h/crypto/asn1/a_gentm.c new file mode 100644 index 0000000..ff1b695 --- /dev/null +++ b/openssl-1.1.0h/crypto/asn1/a_gentm.c @@ -0,0 +1,273 @@ +/* + * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* + * GENERALIZEDTIME implementation. Based on UTCTIME + */ + +#include <stdio.h> +#include <time.h> +#include "internal/cryptlib.h" +#include <openssl/asn1.h> +#include "asn1_locl.h" + +int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d) +{ + static const int min[9] = { 0, 0, 1, 1, 0, 0, 0, 0, 0 }; + static const int max[9] = { 99, 99, 12, 31, 23, 59, 59, 12, 59 }; + char *a; + int n, i, l, o; + + if (d->type != V_ASN1_GENERALIZEDTIME) + return (0); + l = d->length; + a = (char *)d->data; + o = 0; + /* + * GENERALIZEDTIME is similar to UTCTIME except the year is represented + * as YYYY. This stuff treats everything as a two digit field so make + * first two fields 00 to 99 + */ + if (l < 13) + goto err; + for (i = 0; i < 7; i++) { + if ((i == 6) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) { + i++; + if (tm) + tm->tm_sec = 0; + break; + } + if ((a[o] < '0') || (a[o] > '9')) + goto err; + n = a[o] - '0'; + if (++o > l) + goto err; + + if ((a[o] < '0') || (a[o] > '9')) + goto err; + n = (n * 10) + a[o] - '0'; + if (++o > l) + goto err; + + if ((n < min[i]) || (n > max[i])) + goto err; + if (tm) { + switch (i) { + case 0: + tm->tm_year = n * 100 - 1900; + break; + case 1: + tm->tm_year += n; + break; + case 2: + tm->tm_mon = n - 1; + break; + case 3: + tm->tm_mday = n; + break; + case 4: + tm->tm_hour = n; + break; + case 5: + tm->tm_min = n; + break; + case 6: + tm->tm_sec = n; + break; + } + } + } + /* + * Optional fractional seconds: decimal point followed by one or more + * digits. + */ + if (a[o] == '.') { + if (++o > l) + goto err; + i = o; + while ((a[o] >= '0') && (a[o] <= '9') && (o <= l)) + o++; + /* Must have at least one digit after decimal point */ + if (i == o) + goto err; + } + + if (a[o] == 'Z') + o++; + else if ((a[o] == '+') || (a[o] == '-')) { + int offsign = a[o] == '-' ? 1 : -1, offset = 0; + o++; + if (o + 4 > l) + goto err; + for (i = 7; i < 9; i++) { + if ((a[o] < '0') || (a[o] > '9')) + goto err; + n = a[o] - '0'; + o++; + if ((a[o] < '0') || (a[o] > '9')) + goto err; + n = (n * 10) + a[o] - '0'; + if ((n < min[i]) || (n > max[i])) + goto err; + if (tm) { + if (i == 7) + offset = n * 3600; + else if (i == 8) + offset += n * 60; + } + o++; + } + if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign)) + return 0; + } else if (a[o]) { + /* Missing time zone information. */ + goto err; + } + return (o == l); + err: + return (0); +} + +int ASN1_GENERALIZEDTIME_check(const ASN1_GENERALIZEDTIME *d) +{ + return asn1_generalizedtime_to_tm(NULL, d); +} + +int ASN1_GENERALIZEDTIME_set_string(ASN1_GENERALIZEDTIME *s, const char *str) +{ + ASN1_GENERALIZEDTIME t; + + t.type = V_ASN1_GENERALIZEDTIME; + t.length = strlen(str); + t.data = (unsigned char *)str; + if (ASN1_GENERALIZEDTIME_check(&t)) { + if (s != NULL) { + if (!ASN1_STRING_set((ASN1_STRING *)s, str, t.length)) + return 0; + s->type = V_ASN1_GENERALIZEDTIME; + } + return (1); + } else + return (0); +} + +ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_set(ASN1_GENERALIZEDTIME *s, + time_t t) +{ + return ASN1_GENERALIZEDTIME_adj(s, t, 0, 0); +} + +ASN1_GENERALIZEDTIME *ASN1_GENERALIZEDTIME_adj(ASN1_GENERALIZEDTIME *s, + time_t t, int offset_day, + long offset_sec) +{ + char *p; + struct tm *ts; + struct tm data; + size_t len = 20; + ASN1_GENERALIZEDTIME *tmps = NULL; + + if (s == NULL) + tmps = ASN1_GENERALIZEDTIME_new(); + else + tmps = s; + if (tmps == NULL) + return NULL; + + ts = OPENSSL_gmtime(&t, &data); + if (ts == NULL) + goto err; + + if (offset_day || offset_sec) { + if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) + goto err; + } + + p = (char *)tmps->data; + if ((p == NULL) || ((size_t)tmps->length < len)) { + p = OPENSSL_malloc(len); + if (p == NULL) { + ASN1err(ASN1_F_ASN1_GENERALIZEDTIME_ADJ, ERR_R_MALLOC_FAILURE); + goto err; + } + OPENSSL_free(tmps->data); + tmps->data = (unsigned char *)p; + } + + BIO_snprintf(p, len, "%04d%02d%02d%02d%02d%02dZ", ts->tm_year + 1900, + ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min, + ts->tm_sec); + tmps->length = strlen(p); + tmps->type = V_ASN1_GENERALIZEDTIME; +#ifdef CHARSET_EBCDIC_not + ebcdic2ascii(tmps->data, tmps->data, tmps->length); +#endif + return tmps; + err: + if (s == NULL) + ASN1_GENERALIZEDTIME_free(tmps); + return NULL; +} + +const char *_asn1_mon[12] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" +}; + +int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) +{ + char *v; + int gmt = 0; + int i; + int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; + char *f = NULL; + int f_len = 0; + + i = tm->length; + v = (char *)tm->data; + + if (i < 12) + goto err; + if (v[i - 1] == 'Z') + gmt = 1; + for (i = 0; i < 12; i++) + if ((v[i] > '9') || (v[i] < '0')) + goto err; + y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + + (v[2] - '0') * 10 + (v[3] - '0'); + M = (v[4] - '0') * 10 + (v[5] - '0'); + if ((M > 12) || (M < 1)) + goto err; + d = (v[6] - '0') * 10 + (v[7] - '0'); + h = (v[8] - '0') * 10 + (v[9] - '0'); + m = (v[10] - '0') * 10 + (v[11] - '0'); + if (tm->length >= 14 && + (v[12] >= '0') && (v[12] <= '9') && + (v[13] >= '0') && (v[13] <= '9')) { + s = (v[12] - '0') * 10 + (v[13] - '0'); + /* Check for fractions of seconds. */ + if (tm->length >= 15 && v[14] == '.') { + int l = tm->length; + f = &v[14]; /* The decimal point. */ + f_len = 1; + while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9') + ++f_len; + } + } + + if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s", + _asn1_mon[M - 1], d, h, m, s, f_len, f, y, + (gmt) ? " GMT" : "") <= 0) + return (0); + else + return (1); + err: + BIO_write(bp, "Bad time value", 14); + return (0); +} |