APPS/x509: With -CA but both -CAserial and -CAcreateserial not given, use random serial.

Also improve openssl-x509.pod.in and error handling of load_serial() in apps.c.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18373)

(cherry picked from commit ec8a3409487c871b440fa52bff7c3ef33378494a)

1 files changed, 7 insertions, 3 deletions

diff --git a/apps/include/apps.h b/apps/include/apps.h
index 9d5db16600..848d111bbd 100644
--- a/apps/include/apps.h
+++ b/apps/include/apps.h
@@ -219,12 +219,16 @@ typedef struct ca_db_st {
 
 void app_bail_out(char *fmt, ...);
 void *app_malloc(size_t sz, const char *what);
-BIGNUM *load_serial(const char *serialfile, int create, ASN1_INTEGER **retai);
-int save_serial(const char *serialfile, const char *suffix, const BIGNUM *serial,
-                ASN1_INTEGER **retai);
+
+/* load_serial, save_serial, and rotate_serial are also used for CRL numbers */
+BIGNUM *load_serial(const char *serialfile, int *exists, int create,
+                    ASN1_INTEGER **retai);
+int save_serial(const char *serialfile, const char *suffix,
+                const BIGNUM *serial, ASN1_INTEGER **retai);
 int rotate_serial(const char *serialfile, const char *new_suffix,
                   const char *old_suffix);
 int rand_serial(BIGNUM *b, ASN1_INTEGER *ai);
+
 CA_DB *load_index(const char *dbfile, DB_ATTR *dbattr);
 int index_index(CA_DB *db);
 int save_index(const char *dbfile, const char *suffix, CA_DB *db);