Making the authtok structure really opaque.

Definition of structure sss_auth_token was removed from header file
authtok.h and there left only declaration of this structure.
Therefore only way how to use this structure is to use accessory function from
same header file.

To creating new empty authotok can only be used newly created function
sss_authtok_new(). TALLOC context was removed from copy and setter functions,
because pointer to stuct sss_auth_token is used as a memory context.

All declaration of struct sss_auth_token variables was replaced with
pointer to this structure and related changes was made in source code.

Function copy_pam_data can copy from argument src which was dynamically
allocated with function create_pam_data() or zero initialized struct pam_data
allocated on stack.

https://fedorahosted.org/sssd/ticket/1830

1 files changed, 14 insertions, 14 deletions

diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
index 52127b39a..4ccd75d26 100644
--- a/src/providers/krb5/krb5_child.c
+++ b/src/providers/krb5/krb5_child.c
@@ -1201,7 +1201,7 @@ static errno_t changepw_child(struct krb5_req *kr, bool prelim)
 
     DEBUG(SSSDBG_TRACE_LIBS, ("Password change operation\n"));
 
-    ret = sss_authtok_get_password(&kr->pd->authtok, &password, NULL);
+    ret = sss_authtok_get_password(kr->pd->authtok, &password, NULL);
     if (ret != EOK) {
         DEBUG(1, ("Failed to fetch current password [%d] %s.\n",
                   ret, strerror(ret)));
@@ -1233,7 +1233,7 @@ static errno_t changepw_child(struct krb5_req *kr, bool prelim)
         return kerr;
     }
 
-    sss_authtok_set_empty(&kr->pd->authtok);
+    sss_authtok_set_empty(kr->pd->authtok);
 
     if (prelim) {
         DEBUG(SSSDBG_TRACE_LIBS,
@@ -1243,7 +1243,7 @@ static errno_t changepw_child(struct krb5_req *kr, bool prelim)
         return EOK;
     }
 
-    ret = sss_authtok_get_password(&kr->pd->newauthtok, &newpassword, NULL);
+    ret = sss_authtok_get_password(kr->pd->newauthtok, &newpassword, NULL);
     if (ret != EOK) {
         DEBUG(1, ("Failed to fetch new password [%d] %s.\n",
                   ret, strerror(ret)));
@@ -1307,7 +1307,7 @@ static errno_t changepw_child(struct krb5_req *kr, bool prelim)
 
     kerr = get_and_save_tgt(kr, newpassword);
 
-    sss_authtok_set_empty(&kr->pd->newauthtok);
+    sss_authtok_set_empty(kr->pd->newauthtok);
 
     if (kerr == 0) {
         kerr = k5c_attach_ccname_msg(kr);
@@ -1324,7 +1324,7 @@ static errno_t tgt_req_child(struct krb5_req *kr)
 
     DEBUG(SSSDBG_TRACE_LIBS, ("Attempting to get a TGT\n"));
 
-    ret = sss_authtok_get_password(&kr->pd->authtok, &password, NULL);
+    ret = sss_authtok_get_password(kr->pd->authtok, &password, NULL);
     switch (ret) {
         if (ret == EACCES) {
             DEBUG(SSSDBG_OP_FAILURE, ("Invalid authtok type\n"));
@@ -1379,7 +1379,7 @@ static errno_t tgt_req_child(struct krb5_req *kr)
     }
 
 done:
-    sss_authtok_set_empty(&kr->pd->authtok);
+    sss_authtok_set_empty(kr->pd->authtok);
     return ret;
 }
 
@@ -1423,11 +1423,11 @@ static errno_t renew_tgt_child(struct krb5_req *kr)
 
     DEBUG(SSSDBG_TRACE_LIBS, ("Renewing a ticket\n"));
 
-    ret = sss_authtok_get_ccfile(&kr->pd->authtok, &ccname, NULL);
+    ret = sss_authtok_get_ccfile(kr->pd->authtok, &ccname, NULL);
     if (ret != EOK) {
         DEBUG(SSSDBG_OP_FAILURE,
               ("Unsupported authtok type for TGT renewal [%d].\n",
-               sss_authtok_get_type(&kr->pd->authtok)));
+               sss_authtok_get_type(kr->pd->authtok)));
         return ERR_INVALID_CRED_TYPE;
     }
 
@@ -1527,10 +1527,10 @@ static errno_t unpack_authtok(TALLOC_CTX *mem_ctx, struct sss_auth_token *tok,
         sss_authtok_set_empty(tok);
         break;
     case SSS_AUTHTOK_TYPE_PASSWORD:
-        ret = sss_authtok_set_password(mem_ctx, tok, (char *)(buf + *p), 0);
+        ret = sss_authtok_set_password(tok, (char *)(buf + *p), 0);
         break;
     case SSS_AUTHTOK_TYPE_CCFILE:
-        ret = sss_authtok_set_ccfile(mem_ctx, tok, (char *)(buf + *p), 0);
+        ret = sss_authtok_set_ccfile(tok, (char *)(buf + *p), 0);
         break;
     default:
         return EINVAL;
@@ -1598,7 +1598,7 @@ static errno_t unpack_buffer(uint8_t *buf, size_t size,
         if (kr->keytab == NULL) return ENOMEM;
         p += len;
 
-        ret = unpack_authtok(pd, &pd->authtok, buf, size, &p);
+        ret = unpack_authtok(pd, pd->authtok, buf, size, &p);
         if (ret) {
             return ret;
         }
@@ -1608,16 +1608,16 @@ static errno_t unpack_buffer(uint8_t *buf, size_t size,
     } else {
         kr->ccname = NULL;
         kr->keytab = NULL;
-        sss_authtok_set_empty(&pd->authtok);
+        sss_authtok_set_empty(pd->authtok);
     }
 
     if (pd->cmd == SSS_PAM_CHAUTHTOK) {
-        ret = unpack_authtok(pd, &pd->newauthtok, buf, size, &p);
+        ret = unpack_authtok(pd, pd->newauthtok, buf, size, &p);
         if (ret) {
             return ret;
         }
     } else {
-        sss_authtok_set_empty(&pd->newauthtok);
+        sss_authtok_set_empty(pd->newauthtok);
     }
 
     if (pd->cmd == SSS_PAM_ACCT_MGMT) {