Standardize apps use of -rand, etc.

Standardized the -rand flag and added a new one:
    -rand file...
            Always reads the specified files
    -writerand file
            Always writes to the file on exit

For apps that use a config file, the RANDFILE config parameter reads
the file at startup (to seed the RNG) and write to it on exit if
the -writerand flag isn't used.

Ensured that every app that took -rand also took -writerand, and
made sure all of that agreed with all the documentation.

Fix error reporting in write_file and -rand

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/3862)

1 files changed, 7 insertions, 1 deletions

diff --git a/apps/passwd.c b/apps/passwd.c
index 7ce40e058c..eb5a622af7 100644
--- a/apps/passwd.c
+++ b/apps/passwd.c
@@ -65,7 +65,8 @@ typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_IN,
     OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
-    OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_AIXMD5, OPT_SALT, OPT_STDIN
+    OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_AIXMD5, OPT_SALT, OPT_STDIN,
+    OPT_R_ENUM,
 } OPTION_CHOICE;
 
 const OPTIONS passwd_options[] = {
@@ -90,6 +91,7 @@ const OPTIONS passwd_options[] = {
 # ifndef OPENSSL_NO_DES
     {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"},
 # endif
+    OPT_R_OPTIONS,
     {NULL}
 };
 
@@ -182,6 +184,10 @@ int passwd_main(int argc, char **argv)
             in_stdin = 1;
             pw_source_defined = 1;
             break;
+        case OPT_R_CASES:
+            if (!opt_rand(o))
+                goto end;
+            break;
         }
     }
     argc = opt_num_rest();