From 3854acbd2b6708810df418f1188ead90b9635894 Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 29 Nov 2017 18:12:51 +0100
Subject: [PATCH] Add convenience functions to create directories

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---
 src/libpakfire/include/pakfire/util.h |  3 ++
 src/libpakfire/util.c                 | 58 +++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)

diff --git a/src/libpakfire/include/pakfire/util.h b/src/libpakfire/include/pakfire/util.h
index dbe001abc..3574ff999 100644
--- a/src/libpakfire/include/pakfire/util.h
+++ b/src/libpakfire/include/pakfire/util.h
@@ -22,6 +22,7 @@
 #define PAKFIRE_UTIL_H
 
 #include <stddef.h>
+#include <sys/types.h>
 #include <time.h>
 
 void pakfire_oom(size_t num, size_t len);
@@ -41,6 +42,8 @@ char* pakfire_path_join(const char* first, const char* second);
 
 char* pakfire_basename(const char* path);
 char* pakfire_dirname(const char* path);
+int pakfire_access(const char* dir, const char* file, int mode);
+int pakfire_mkdir(const char* path, mode_t mode);
 
 char* pakfire_sgets(char* str, int num, char** input);
 char* pakfire_remove_trailing_newline(char* str);
diff --git a/src/libpakfire/util.c b/src/libpakfire/util.c
index a4bf292cd..ed783e825 100644
--- a/src/libpakfire/util.c
+++ b/src/libpakfire/util.c
@@ -18,17 +18,22 @@
 #                                                                             #
 #############################################################################*/
 
+#include <errno.h>
 #include <libgen.h>
 #include <math.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <gcrypt.h>
 
 #include <pakfire/constants.h>
+#include <pakfire/logging.h>
 
 void pakfire_oom(size_t num, size_t len) {
 	if (num)
@@ -145,6 +150,59 @@ char* pakfire_dirname(const char* path) {
 	return dirname(parent);
 }
 
+int pakfire_access(const char* dir, const char* file, int mode) {
+	char* path = pakfire_path_join(dir, file);
+
+	int r = access(path, mode);
+
+	if (r) {
+		if (mode & R_OK)
+			DEBUG("%s is not readable\n", path);
+
+		if (mode & W_OK)
+			DEBUG("%s is not writable\n", path);
+
+		if (mode & X_OK)
+			DEBUG("%s is not executable\n", path);
+
+		if (mode & F_OK)
+			DEBUG("%s does not exist\n", path);
+	}
+
+	return r;
+}
+
+int pakfire_mkdir(const char* path, mode_t mode) {
+	int r = 0;
+
+	if ((strcmp(path, "/") == 0) || (strcmp(path, ".") == 0))
+		return 0;
+
+	// If parent does not exists, we try to create it.
+	char* parent = pakfire_dirname(path);
+	r = pakfire_access(parent, NULL, F_OK);
+	if (r)
+		r = pakfire_mkdir(parent, 0);
+
+	pakfire_free(parent);
+
+	if (r)
+		return r;
+
+	// Finally, create the directory we want.
+	r = mkdir(path, mode);
+	if (r) {
+		switch (errno) {
+			// If the directory already exists, this is fine.
+			case EEXIST:
+				r = 0;
+				break;
+		}
+	}
+
+	return r;
+}
+
 char* pakfire_sgets(char* str, int num, char** input) {
 	char* next = *input;
 	int numread = 0;
-- 
2.39.5