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+/*
+ * Copyright (c) 2023, Oracle and/or its affiliates.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#include <X11/xpm.h>
+
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "TestAllFiles.h"
+#include "CompareXpmImage.h"
+
+#ifndef g_assert_no_errno /* defined in glib 2.66 & later */
+#define g_assert_no_errno(n) g_assert_cmpint(n, >=, 0)
+#endif
+
+/*
+ * Check if a filename ends in ".Z" or ".gz"
+ */
+static inline gboolean
+is_compressed(const char *filepath)
+{
+ const char *ext = strrchr(filepath, '.');
+
+ if ((ext != NULL) &&
+ (((ext[1] == 'Z') && (ext[2] == 0)) ||
+ ((ext[1] == 'g') && (ext[2] == 'z') && (ext[3] == 0)))) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/*
+ * XpmWriteFileFromXpmImage - Write XPM files without requiring an X Display
+ */
+static void
+test_WFFXI_helper(const gchar *newfilepath, XpmImage *imageA, XpmInfo *infoA)
+{
+ XpmImage imageB;
+ XpmInfo infoB;
+ int status;
+
+ g_test_message("...writing %s", newfilepath);
+
+ status = XpmWriteFileFromXpmImage(newfilepath, imageA, infoA);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ if (is_compressed(newfilepath)) {
+ /* Wait a moment for the compression command to finish writing,
+ * since OpenWriteFile() does a double fork so we can't just wait
+ * for the child command to exit.
+ */
+ usleep(10000);
+ }
+
+ status = XpmReadFileToXpmImage(newfilepath, &imageB, &infoB);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ CompareXpmImage(imageA, &imageB);
+ XpmFreeXpmImage(&imageB);
+ XpmFreeXpmInfo(&infoB);
+
+ status = remove(newfilepath);
+ g_assert_no_errno(status);
+
+}
+
+static int
+TestWriteFileFromXpmImage(const gchar *filepath)
+{
+ XpmImage imageA;
+ XpmInfo infoA;
+ int status;
+ gchar *testdir, *filename, *newfilepath;
+ GError *err = NULL;
+
+#ifndef NO_ZPIPE
+ gchar *cmpfilepath;
+#endif
+
+ status = XpmReadFileToXpmImage(filepath, &imageA, &infoA);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ testdir = g_dir_make_tmp("XpmWrite-test-XXXXXX", &err);
+ g_assert_no_error(err);
+
+ filename = g_path_get_basename(filepath);
+ newfilepath = g_build_filename(testdir, filename, NULL);
+
+ test_WFFXI_helper(newfilepath, &imageA, &infoA);
+
+#ifndef NO_ZPIPE
+ cmpfilepath = g_strdup_printf("%s.gz", newfilepath);
+ test_WFFXI_helper(cmpfilepath, &imageA, &infoA);
+ g_free(cmpfilepath);
+
+ cmpfilepath = g_strdup_printf("%s.Z", newfilepath);
+ test_WFFXI_helper(cmpfilepath, &imageA, &infoA);
+ g_free(cmpfilepath);
+#endif
+
+ XpmFreeXpmImage(&imageA);
+ XpmFreeXpmInfo(&infoA);
+
+ g_assert_no_errno(g_rmdir(testdir));
+
+ g_free(newfilepath);
+ g_free(filename);
+ g_free(testdir);
+
+ return status;
+}
+
+static void
+test_XpmWriteFileFromXpmImage(void)
+{
+ /* Todo: verify trying to write to an unwritable file fails */
+
+ TestAllNormalFiles("good", XpmSuccess, TestWriteFileFromXpmImage);
+ /* XpmReadFileToXpmImage supports compressed files */
+ TestAllCompressedFiles("good", XpmSuccess, TestWriteFileFromXpmImage);
+}
+
+/*
+ * XpmWriteFileFromData - wrapper around XpmWriteFileFromXpmImage that
+ * converts the image into a list of strings.
+ */
+static void
+test_WFFXD_helper(const gchar *newfilepath, char **dataA)
+{
+ char **dataB;
+ int status;
+
+ g_test_message("...writing %s", newfilepath);
+
+ status = XpmWriteFileFromData(newfilepath, dataA);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ if (is_compressed(newfilepath)) {
+ /* Wait a moment for the compression command to finish writing,
+ * since OpenWriteFile() does a double fork so we can't just wait
+ * for the child command to exit.
+ */
+ usleep(10000);
+ }
+
+ status = XpmReadFileToData(newfilepath, &dataB);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ /* Todo: compare data fields */
+ XpmFree(dataB);
+
+ status = remove(newfilepath);
+ g_assert_no_errno(status);
+
+}
+
+static int
+TestWriteFileFromData(const gchar *filepath)
+{
+ char **data = NULL;
+ int status;
+ gchar *testdir, *filename, *newfilepath;
+ GError *err = NULL;
+
+#ifndef NO_ZPIPE
+ gchar *cmpfilepath;
+#endif
+
+ status = XpmReadFileToData(filepath, &data);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ testdir = g_dir_make_tmp("XpmWrite-test-XXXXXX", &err);
+ g_assert_no_error(err);
+
+ filename = g_path_get_basename(filepath);
+ newfilepath = g_build_filename(testdir, filename, NULL);
+
+ test_WFFXD_helper(newfilepath, data);
+
+#ifndef NO_ZPIPE
+ cmpfilepath = g_strdup_printf("%s.gz", newfilepath);
+ test_WFFXD_helper(cmpfilepath, data);
+ g_free(cmpfilepath);
+
+ cmpfilepath = g_strdup_printf("%s.Z", newfilepath);
+ test_WFFXD_helper(cmpfilepath, data);
+ g_free(cmpfilepath);
+#endif
+
+ XpmFree(data);
+
+ g_assert_no_errno(g_rmdir(testdir));
+
+ g_free(newfilepath);
+ g_free(filename);
+ g_free(testdir);
+
+ return status;
+}
+
+static void
+test_XpmWriteFileFromData(void)
+{
+ /* Todo - verify trying to write to an unwritable file fails */
+
+ TestAllNormalFiles("good", XpmSuccess, TestWriteFileFromData);
+ /* XpmReadFileToData calls XpmReadFileToXpmImage so it
+ supports compressed files */
+ TestAllCompressedFiles("good", XpmSuccess, TestWriteFileFromData);
+}
+
+/*
+ * XpmWriteFileFromBuffer - helper function to write files & read them back in
+ * XpmWriteFileFromBuffer() does not support compressed files.
+ */
+static int
+TestWriteFileFromBuffer(const gchar *filepath)
+{
+ char *buffer = NULL;
+ gchar *testdir, *filename, *newfilepath;
+ GError *err = NULL;
+ int status;
+
+ status = XpmReadFileToBuffer(filepath, &buffer);
+ g_assert_cmpint(status, ==, XpmSuccess);
+ g_assert_nonnull(buffer);
+
+ testdir = g_dir_make_tmp("XpmWrite-test-XXXXXX", &err);
+ g_assert_no_error(err);
+
+ filename = g_path_get_basename(filepath);
+ newfilepath = g_build_filename(testdir, filename, NULL);
+ g_test_message("...writing %s", newfilepath);
+
+ status = XpmWriteFileFromBuffer(newfilepath, buffer);
+ g_assert_cmpint(status, ==, XpmSuccess);
+
+ if (status == XpmSuccess) {
+ char readbuf[8192];
+ char *b = buffer;
+ int fd;
+ ssize_t rd;
+
+ /* Read file ourselves and verify the data matches */
+ g_assert_no_errno(fd = open(newfilepath, O_RDONLY));
+ while ((rd = read(fd, readbuf, sizeof(readbuf))) > 0) {
+ g_assert_cmpmem(b, rd, readbuf, rd);
+ b += rd;
+ }
+ /* Verify we're at the end of the buffer */
+ g_assert_cmpint(b[0], ==, '\0');
+
+ g_assert_no_errno(close(fd));
+ g_assert_no_errno(remove(newfilepath));
+ }
+ XpmFree(buffer);
+
+ g_assert_no_errno(g_rmdir(testdir));
+
+ g_free(newfilepath);
+ g_free(filename);
+ g_free(testdir);
+
+ return status;
+}
+
+static void
+test_XpmWriteFileFromBuffer(void)
+{
+ /* Todo: verify trying to write to an unwritable file fails */
+
+ TestAllNormalFiles("good", XpmSuccess, TestWriteFileFromBuffer);
+ /* XpmReadFileToBuffer does not support compressed files */
+}
+
+int
+main(int argc, char** argv)
+{
+ g_test_init(&argc, &argv, NULL);
+ g_test_bug_base("https://gitlab.freedesktop.org/xorg/lib/libxpm/-/issues/");
+
+
+ g_test_add_func("/XpmRead/XpmWriteFileFromXpmImage",
+ test_XpmWriteFileFromXpmImage);
+ g_test_add_func("/XpmRead/XpmWriteFileFromData",
+ test_XpmWriteFileFromData);
+ g_test_add_func("/XpmRead/XpmWriteFileFromBuffer",
+ test_XpmWriteFileFromBuffer);
+
+ return g_test_run();
+}
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