From: Michael Tremer <michael.tremer@ipfire.org>
Date: Mon, 19 Sep 2022 19:14:37 +0000 (+0000)
Subject: file: Add function to dump the file
X-Git-Tag: 0.9.28~299
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5852b822f17e429e78bde09e87d40a6a2abfd106;p=pakfire.git

file: Add function to dump the file

This function returns a line which is similar to what "tar tvf"
produces.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/file.c b/src/libpakfire/file.c
index 15c8e2765..c57ba6eb6 100644
--- a/src/libpakfire/file.c
+++ b/src/libpakfire/file.c
@@ -382,6 +382,130 @@ PAKFIRE_EXPORT struct pakfire_file* pakfire_file_unref(struct pakfire_file* file
 	return NULL;
 }
 
+#define pakfire_file_strmode(file, buffer) \
+	__pakfire_file_strmode(file, buffer, sizeof(buffer))
+
+static int __pakfire_file_strmode(struct pakfire_file* file, char* s, const size_t length) {
+	int r;
+
+	static const mode_t permbits[] = {
+		0400,
+		0200,
+		0100,
+		0040,
+		0020,
+		0010,
+		0004,
+		0002,
+		0001
+	};
+
+	const mode_t mode = pakfire_file_get_mode(file);
+	const mode_t type = pakfire_file_get_type(file);
+
+	// Set some default string
+	r = __pakfire_string_set(s, length, "?rwxrwxrwx ");
+	if (r)
+		return r;
+
+	switch (type) {
+		case S_IFREG:
+			s[0] = '-';
+			break;
+
+		case S_IFBLK:
+			s[0] = 'b';
+			break;
+
+		case S_IFCHR:
+			s[0] = 'c';
+			break;
+
+		case S_IFDIR:
+			s[0] = 'd';
+			break;
+
+		case S_IFLNK:
+			s[0] = 'l';
+			break;
+
+		case S_IFSOCK:
+			s[0] = 's';
+			break;
+
+		case S_IFIFO:
+			s[0] = 'p';
+			break;
+
+		default:
+			if (*file->hardlink) {
+				s[0] = 'h';
+				break;
+			}
+	}
+
+	for (unsigned int i = 0; i < 9; i++) {
+		if (mode & permbits[i])
+			continue;
+
+		s[i+1] = '-';
+	}
+
+	if (mode & S_ISUID) {
+		if (mode & 0100)
+			s[3] = 's';
+		else
+			s[3] = 'S';
+	}
+
+	if (mode & S_ISGID) {
+		if (mode & 0010)
+			s[6] = 's';
+		else
+			s[6] = 'S';
+	}
+
+	if (mode & S_ISVTX) {
+		if (mode & 0001)
+			s[9] = 't';
+		else
+			s[9] = 'T';
+	}
+
+#if 0
+	if (file->caps)
+		s[10] = '+';
+#endif
+
+	return 0;
+}
+
+char* pakfire_file_dump(struct pakfire_file* file) {
+	char* buffer = NULL;
+	int r;
+
+	char mode[12];
+	char time[32];
+
+	// Format mode
+	r = pakfire_file_strmode(file, mode);
+	if (r)
+		return NULL;
+
+	// Format time
+	r = pakfire_strftime(time, "%Y-%m-%d %H:%M", file->st.st_ctime);
+	if (r)
+		return NULL;
+
+	// Put everything together
+	r = asprintf(&buffer, "%s %s/%s %8zu %s %s",
+		mode, file->user, file->group, file->st.st_size, time, file->path);
+	if (r < 0)
+		return NULL;
+
+	return buffer;
+}
+
 PAKFIRE_EXPORT int pakfire_file_cmp(struct pakfire_file* file1, struct pakfire_file* file2) {
 	const char* path1 = pakfire_file_get_path(file1);
 	const char* path2 = pakfire_file_get_path(file2);
diff --git a/src/libpakfire/include/pakfire/file.h b/src/libpakfire/include/pakfire/file.h
index 8ce073812..d626182ff 100644
--- a/src/libpakfire/include/pakfire/file.h
+++ b/src/libpakfire/include/pakfire/file.h
@@ -35,6 +35,8 @@ int pakfire_file_create(struct pakfire_file** file, struct pakfire* pakfire);
 struct pakfire_file* pakfire_file_ref(struct pakfire_file* file);
 struct pakfire_file* pakfire_file_unref(struct pakfire_file* file);
 
+char* pakfire_file_dump(struct pakfire_file* file);
+
 int pakfire_file_cmp(struct pakfire_file* file1, struct pakfire_file* file2);
 
 const char* pakfire_file_get_path(struct pakfire_file* file);