Make ASN1_TIME_set_string_X509 and ASN1_TIME_set_string match the man page

This makes it where people can't put dumb values in certs without
trying harder, and changes the regress to test this.

GENERALIZED times outside of the RFC5280 spec are required for OCSP
but these should be constructed with the GENERALIZED time string
setters.

ok tb@

3 files changed, 60 insertions, 39 deletions

diff --git a/src/lib/libcrypto/asn1/a_time_tm.c b/src/lib/libcrypto/asn1/a_time_tm.c
index 986c1e735d..c8eabec08f 100644
--- a/src/lib/libcrypto/asn1/a_time_tm.c
+++ b/src/lib/libcrypto/asn1/a_time_tm.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: a_time_tm.c,v 1.33 2024/03/02 09:10:42 tb Exp $ */
+/* $OpenBSD: a_time_tm.c,v 1.34 2024/04/08 19:57:40 beck Exp $ */
 /*
  * Copyright (c) 2015 Bob Beck <beck@openbsd.org>
  *
@@ -160,15 +160,7 @@ tm_to_utctime(struct tm *tm, ASN1_TIME *atime)
 ASN1_TIME *
 tm_to_rfc5280_time(struct tm *tm, ASN1_TIME *atime)
 {
-        int year;
-
-        year = tm->tm_year + 1900;
-        if (year < 1950 || year > 9999) {
-                ASN1error(ASN1_R_ILLEGAL_TIME_VALUE);
-                return (NULL);
-        }
-
-        if (year < 2050)
+        if (tm->tm_year >= 50 && tm->tm_year < 150)
                 return (tm_to_utctime(tm, atime));
 
         return (tm_to_gentime(tm, atime));
@@ -352,25 +344,21 @@ ASN1_time_parse(const char *bytes, size_t len, struct tm *tm, int mode)
 static int
 ASN1_TIME_set_string_internal(ASN1_TIME *s, const char *str, int mode)
 {
+        struct tm tm;
         int type;
-        char *tmp;
 
-        if ((type = ASN1_time_parse(str, strlen(str), NULL, mode)) == -1)
-                return (0);
-        if (mode != 0 && mode != type)
+        if ((type = ASN1_time_parse(str, strlen(str), &tm, mode)) == -1)
                 return (0);
-
-        if (s == NULL)
-                return (1);
-
-        if ((tmp = strdup(str)) == NULL)
+        switch(mode) {
+        case V_ASN1_UTCTIME:
+                return (type == mode && tm_to_utctime(&tm, s) != NULL);
+        case V_ASN1_GENERALIZEDTIME:
+                return (type == mode && tm_to_gentime(&tm, s) != NULL);
+        case RFC5280:
+                return (tm_to_rfc5280_time(&tm, s) != NULL);
+        default:
                 return (0);
-        free(s->data);
-        s->data = tmp;
-        s->length = strlen(tmp);
-        s->type = type;
-
-        return (1);
+        }
 }
 
 static ASN1_TIME *
@@ -448,7 +436,7 @@ LCRYPTO_ALIAS(ASN1_TIME_to_generalizedtime);
 int
 ASN1_TIME_set_string(ASN1_TIME *s, const char *str)
 {
-        return (ASN1_TIME_set_string_internal(s, str, 0));
+        return (ASN1_TIME_set_string_internal(s, str, RFC5280));
 }
 LCRYPTO_ALIAS(ASN1_TIME_set_string);
 
diff --git a/src/regress/lib/libcrypto/asn1/asn1time.c b/src/regress/lib/libcrypto/asn1/asn1time.c
index 8208fcd1c0..7cc6df8a1a 100644
--- a/src/regress/lib/libcrypto/asn1/asn1time.c
+++ b/src/regress/lib/libcrypto/asn1/asn1time.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: asn1time.c,v 1.25 2024/02/18 22:17:01 tb Exp $ */
+/* $OpenBSD: asn1time.c,v 1.26 2024/04/08 19:57:40 beck Exp $ */
 /*
  * Copyright (c) 2015 Joel Sing <jsing@openbsd.org>
  * Copyright (c) 2024 Google Inc.
@@ -420,6 +420,7 @@ static int
 asn1_time_test(int test_no, const struct asn1_time_test *att, int type)
 {
         ASN1_TIME *t = NULL, *tx509 = NULL;
+        char *parsed_time = NULL;
         int failure = 1;
 
         if (ASN1_TIME_set_string(NULL, att->str) != 1) {
@@ -434,9 +435,27 @@ asn1_time_test(int test_no, const struct asn1_time_test *att, int type)
         if ((tx509 = ASN1_TIME_new()) == NULL)
                 goto done;
 
-        if (ASN1_TIME_set_string(t, att->str) != 1) {
-                fprintf(stderr, "FAIL: test %d - failed to set string '%s'\n",
-                    test_no, att->str);
+        switch (strlen(att->str)) {
+        case 13:
+                t->type = V_ASN1_UTCTIME;
+                if (ASN1_UTCTIME_set_string(t, att->str) != 1) {
+                        fprintf(stderr, "FAIL: test %d - failed to set utc "
+                            "string '%s'\n",
+                            test_no, att->str);
+                        goto done;
+                }
+                break;
+        case 15:
+                t->type = V_ASN1_GENERALIZEDTIME;
+                if (ASN1_GENERALIZEDTIME_set_string(t, att->str) != 1) {
+                        fprintf(stderr, "FAIL: test %d - failed to set gen "
+                            "string '%s'\n",
+                            test_no, att->str);
+                        goto done;
+                }
+                break;
+        default:
+                fprintf(stderr, "FAIL: unknown type\n");
                 goto done;
         }
 
@@ -446,13 +465,33 @@ asn1_time_test(int test_no, const struct asn1_time_test *att, int type)
                 goto done;
         }
 
+        if ((parsed_time = strdup(t->data)) == NULL)
+                goto done;
+
         if (ASN1_TIME_normalize(t) != 1) {
                 fprintf(stderr, "FAIL: test %d - failed to set normalize '%s'\n",
                     test_no, att->str);
                 goto done;
         }
 
-        if (ASN1_TIME_set_string_X509(tx509, t->data) != 1) {
+        if (ASN1_TIME_set_string_X509(tx509, parsed_time) != 1) {
+                fprintf(stderr, "FAIL: test %d - failed to set string X509 '%s'\n",
+                    test_no, t->data);
+                goto done;
+        }
+
+        if (t->type != tx509->type) {
+                fprintf(stderr, "FAIL: test %d - type %d, different from %d\n",
+                    test_no, t->type, tx509->type);
+                goto done;
+        }
+
+        if (ASN1_TIME_compare(t, tx509) != 0) {
+                fprintf(stderr, "FAIL: ASN1_TIME values differ!\n");
+                goto done;
+        }
+
+        if (ASN1_TIME_set_string(tx509, parsed_time) != 1) {
                 fprintf(stderr, "FAIL: test %d - failed to set string X509 '%s'\n",
                     test_no, t->data);
                 goto done;
@@ -476,6 +515,7 @@ asn1_time_test(int test_no, const struct asn1_time_test *att, int type)
 
         ASN1_TIME_free(t);
         ASN1_TIME_free(tx509);
+        free(parsed_time);
 
         return (failure);
 }
diff --git a/src/regress/lib/libcrypto/asn1/rfc5280time.c b/src/regress/lib/libcrypto/asn1/rfc5280time.c
index 7a44a30e88..c57cac1463 100644
--- a/src/regress/lib/libcrypto/asn1/rfc5280time.c
+++ b/src/regress/lib/libcrypto/asn1/rfc5280time.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: rfc5280time.c,v 1.7 2022/09/05 21:12:08 tb Exp $ */
+/* $OpenBSD: rfc5280time.c,v 1.8 2024/04/08 19:57:40 beck Exp $ */
 /*
  * Copyright (c) 2015 Joel Sing <jsing@openbsd.org>
  * Copyright (c) 2015 Bob Beck <beck@opebsd.org>
@@ -234,13 +234,6 @@ rfc5280_invtime_test(int test_no, struct rfc5280_time_test *att)
                         goto done;
                 }
         }
-        if (ASN1_TIME_set_string(t, att->str) != 0) {
-                if (X509_cmp_time(t, &now) != 0) {
-                        fprintf(stderr, "FAIL: test %d - successfully parsed as UTCTIME "
-                            "string '%s'\n", test_no, att->str);
-                        goto done;
-                }
-        }
 
         failure = 0;