add name_isvalid(), set_ownersysdir_stack(), set_ownerhome_stack() functions

src/lib66/utils/name_isvalid.c

+/*
+ * name_isvalid.c
+ *
+ * Copyright (c) 2018-2021 Eric Vidal <eric@obarun.org>
+ *
+ * All rights reserved.
+ *
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+
+#include <string.h>
+
+#include <oblibs/log.h>
+
+#include <66/constants.h>
+#include <66/utils.h>
+
+void name_isvalid(char const *name)
+{
+    log_flow() ;
+
+    if (!memcmp(name, SS_MASTER + 1, 6))
+        log_die(LOG_EXIT_USER, "service name: ", name, ": starts with reserved prefix Master") ;
+
+    if (!strcmp(name, SS_SERVICE))
+        log_die(LOG_EXIT_USER, "service as service name is a reserved name") ;
+
+    if (!strcmp(name, SS_SERVICE "@"))
+        log_die(LOG_EXIT_USER, "service@ as service name is a reserved name") ;
+}

src/lib66/utils/set_ownerhome.c

@@ -22,6 +22,7 @@
 #include <skalibs/stralloc.h>
 
 #include <66/utils.h>
+#include <66/constants.h>
 
 int set_ownerhome(stralloc *base,uid_t owner)
 {
@@ -45,3 +46,30 @@ int set_ownerhome(stralloc *base,uid_t owner)
 
     return 1 ;
 }
+
+int set_ownerhome_stack(char *store)
+{
+    log_flow() ;
+
+    char const *user_home = 0 ;
+    int e = errno ;
+    struct passwd *st = getpwuid(getuid()) ;
+    errno = 0 ;
+    if (!st) {
+        if (!errno) errno = ESRCH ;
+        return 0 ;
+    }
+    user_home = st->pw_dir ;
+    errno = e ;
+    if (!user_home)
+        return 0 ;
+
+    if (strlen(user_home) + 1 > SS_MAX_PATH_LEN) {
+        errno = ENAMETOOLONG ;
+        return 0 ;
+    }
+
+    auto_strings(store, user_home, "/") ;
+
+    return 1 ;
+}

src/lib66/utils/set_ownersysdir.c

@@ -52,3 +52,38 @@ int set_ownersysdir(stralloc *base, uid_t owner)
 
     return 1 ;
 }
+
+int set_ownersysdir_stack(char *base, uid_t owner)
+{
+    log_flow() ;
+
+    char const *user_home = NULL ;
+    int e = errno ;
+    struct passwd *st = getpwuid(owner) ;
+    errno = 0 ;
+
+    if (!st) {
+
+        if (!errno) errno = ESRCH ;
+        return 0 ;
+    }
+
+    user_home = st->pw_dir ;
+
+    errno = e ;
+
+    if (user_home == NULL)
+        return 0 ;
+
+    if (strlen(user_home) + 1 + strlen(SS_USER_DIR) > SS_MAX_PATH_LEN) {
+        errno = ENAMETOOLONG ;
+        return 0 ;
+    }
+
+    if(owner > 0)
+        auto_strings(base, user_home, "/", SS_USER_DIR) ;
+    else
+        auto_strings(base, SS_SYSTEM_DIR) ;
+
+    return 1 ;
+}