Add some unit testing utilitieslibXfont-1.5-branch

The test/utils directory contains some standalone test programs for testing
libXfont funtionality without needing a full X server session.  They could
be used to generate automated unit testing in the future, but that work has
not yet been done.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

5 files changed, 380 insertions, 0 deletions

diff --git a/test/utils/Makefile.am b/test/utils/Makefile.am
new file mode 100644
index 0000000..03398b6
--- /dev/null
+++ b/test/utils/Makefile.am
@@ -0,0 +1,35 @@
+#
+# Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+#
+# 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.
+#
+
+noinst_PROGRAMS = lsfontdir
+
+EXTRA_DIST = README
+
+AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CFLAGS = $(XFONT_CFLAGS) $(OS_CFLAGS) $(CWARNFLAGS)
+
+LDADD = $(top_builddir)/src/libXfont.la
+
+UTIL_SRCS = font-test-utils.c font-test-utils.h
+
+lsfontdir_SOURCES = lsfontdir.c $(UTIL_SRCS)
diff --git a/test/utils/README b/test/utils/README
new file mode 100644
index 0000000..ce093a4
--- /dev/null
+++ b/test/utils/README
@@ -0,0 +1,18 @@
+This directory contains utilities which can be used for adhoc testing of
+libXfont by developers, and which are hoped to be useful for building up
+automated testing in the future.
+
+They are not intended for distros to package and ship to end users - they
+are not documented, and are full of assert() and fatal err() calls where
+end user software would have error handling.
+
+No promises of interface stability are made for these - they may change at
+any time to allow better testing.
+
+Utilities include:
+
+lsfontdir:
+    Reads & prints the contents of fonts.dir files.
+    Takes a list of font path entries on the command line, uses defaults
+    if none specified.
+    For use with afl fuzzer, you must use afl -f fonts.dir lsfontdir @@
diff --git a/test/utils/font-test-utils.c b/test/utils/font-test-utils.c
new file mode 100644
index 0000000..bfe68da
--- /dev/null
+++ b/test/utils/font-test-utils.c
@@ -0,0 +1,205 @@
+/* Common utility code for interacting with libXfont from test utilities
+ *
+ * Note that this code is designed for test programs, and thus uses assert()
+ * and fatal err() calls in places that real code would do error handling,
+ * since the goal is to catch bugs faster, not help users get past problems.
+ */
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * 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.
+ */
+
+/* Based on code from xorg-server/dix/dixfont.c covered by this notice:
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+ */
+
+#include "font-test-utils.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <assert.h>
+#include <err.h>
+
+static FPEFunctions *fpe_functions = NULL;
+static int num_fpe_types = 0;
+
+/* Callback from libXfont when each fpe handler is registered */
+_X_EXPORT int
+RegisterFPEFunctions(NameCheckFunc name_func,
+		     InitFpeFunc init_func,
+		     FreeFpeFunc free_func,
+		     ResetFpeFunc reset_func,
+		     OpenFontFunc open_func,
+		     CloseFontFunc close_func,
+		     ListFontsFunc list_func,
+		     StartLfwiFunc start_lfwi_func,
+		     NextLfwiFunc next_lfwi_func,
+		     WakeupFpeFunc wakeup_func,
+		     ClientDiedFunc client_died,
+		     LoadGlyphsFunc load_glyphs,
+		     StartLaFunc start_list_alias_func,
+		     NextLaFunc next_list_alias_func,
+		     SetPathFunc set_path_func)
+{
+    FPEFunctions *new;
+
+    /* grow the list */
+    new = realloc(fpe_functions, (num_fpe_types + 1) * sizeof(FPEFunctions));
+    assert (new != NULL);
+    fpe_functions = new;
+
+    fpe_functions[num_fpe_types].name_check = name_func;
+    fpe_functions[num_fpe_types].open_font = open_func;
+    fpe_functions[num_fpe_types].close_font = close_func;
+    fpe_functions[num_fpe_types].wakeup_fpe = wakeup_func;
+    fpe_functions[num_fpe_types].list_fonts = list_func;
+    fpe_functions[num_fpe_types].start_list_fonts_with_info = start_lfwi_func;
+    fpe_functions[num_fpe_types].list_next_font_with_info = next_lfwi_func;
+    fpe_functions[num_fpe_types].init_fpe = init_func;
+    fpe_functions[num_fpe_types].free_fpe = free_func;
+    fpe_functions[num_fpe_types].reset_fpe = reset_func;
+    fpe_functions[num_fpe_types].client_died = client_died;
+    fpe_functions[num_fpe_types].load_glyphs = load_glyphs;
+    fpe_functions[num_fpe_types].start_list_fonts_and_aliases =
+	start_list_alias_func;
+    fpe_functions[num_fpe_types].list_next_font_or_alias = next_list_alias_func;
+    fpe_functions[num_fpe_types].set_path_hook = set_path_func;
+
+    return num_fpe_types++;
+}
+
+FPEFunctions *
+init_font_handlers(int *fpe_function_count)
+{
+    register_fpe_functions();
+    /* make sure our callbacks were called & worked */
+    assert (fpe_functions != NULL);
+    assert (num_fpe_types > 0);
+    *fpe_function_count = num_fpe_types;
+    return fpe_functions;
+}
+
+
+/* does the necessary magic to figure out the fpe type */
+static int
+DetermineFPEType(const char *pathname)
+{
+    int i;
+
+    /* make sure init_font_handlers was called first */
+    assert (num_fpe_types > 0);
+
+    for (i = 0; i < num_fpe_types; i++) {
+        if ((*fpe_functions[i].name_check) (pathname))
+            return i;
+    }
+    return -1;
+}
+
+
+static const char * const default_fpes[] = {
+    "catalogue:/etc/X11/fontpath.d",
+    "built-ins"
+};
+#define num_default_fpes  (sizeof(default_fpes) / sizeof(*default_fpes))
+
+FontPathElementPtr *
+init_font_paths(const char * const *font_paths, int *num_fpes)
+{
+    FontPathElementPtr *fpe_list;
+    int i;
+
+    /* make sure init_font_handlers was called first */
+    assert (num_fpe_types > 0);
+
+    /* Use default if caller didn't supply any */
+    if (*num_fpes == 0) {
+	font_paths = default_fpes;
+	*num_fpes = num_default_fpes;
+    }
+
+    fpe_list = calloc(*num_fpes, sizeof(FontPathElementPtr));
+    assert(fpe_list != NULL);
+
+    for (i = 0; i < *num_fpes; i++) {
+	int result;
+	FontPathElementPtr fpe = calloc(1, sizeof(FontPathElementRec));
+	assert(fpe != NULL);
+
+	fpe->name = strdup(font_paths[i]);
+	assert(fpe->name != NULL);
+	fpe->name_length = strlen(fpe->name);
+	assert(fpe->name_length > 0);
+	/* If path is to fonts.dir file, trim it off and use the full
+	   directory path instead.  Simplifies testing with afl. */
+	if (fpe->name_length > sizeof("/fonts.dir")) {
+	    char *tail = fpe->name + fpe->name_length -
+		(sizeof("/fonts.dir") - 1);
+
+	    if (strcmp(tail, "/fonts.dir") == 0) {
+		char *fullpath;
+
+		*tail = '\0';
+		fullpath = realpath(fpe->name, NULL);
+		assert(fullpath != NULL);
+		free(fpe->name);
+		fpe->name = fullpath;
+		fpe->name_length = strlen(fpe->name);
+		assert(fpe->name_length > 0);
+	    }
+	}
+	fpe->type = DetermineFPEType(fpe->name);
+	if (fpe->type == -1)
+	    err(BadFontPath, "Unable to find handler for font path %s",
+		fpe->name);
+	result = (*fpe_functions[fpe->type].init_fpe) (fpe);
+	if (result != Successful)
+	    err(result, "init_fpe failed for font path %s: error %d",
+		fpe->name, result);
+
+	printf("Initialized font path element #%d: %s\n", i, fpe->name);
+	fpe_list[i] = fpe;
+    }
+    printf("\n");
+
+    return fpe_list;
+}
diff --git a/test/utils/font-test-utils.h b/test/utils/font-test-utils.h
new file mode 100644
index 0000000..4aa41fa
--- /dev/null
+++ b/test/utils/font-test-utils.h
@@ -0,0 +1,48 @@
+/* Common utility code for interacting with libXfont from test utilities */
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <X11/Xfuncproto.h>
+#include <X11/fonts/font.h>
+#include <X11/fonts/fontstruct.h>
+#include <X11/fonts/fontmisc.h>
+
+/* Returns pointer to array of functions for each type of font_path_entry
+ * handler, and puts count of entries in that array into fpe_function_count.
+ * Must be called before init_font_paths().
+ */
+extern FPEFunctions *init_font_handlers(int *fpe_function_count);
+
+/* Returns pointer to array of FontPathElement structs for each font path
+ * entry passed in.  num_fpes must be set to the number of entries in the
+ * font_paths array when called - will be set to the number of entries in
+ * the returned array.   May be called with (NULL, 0) to use default font
+ * path of "catalogue:/etc/X11/fontpath.d" & "built-ins".
+ */
+extern FontPathElementPtr *init_font_paths(const char * const *font_paths,
+					   int *num_fpes);
diff --git a/test/utils/lsfontdir.c b/test/utils/lsfontdir.c
new file mode 100644
index 0000000..c623c96
--- /dev/null
+++ b/test/utils/lsfontdir.c
@@ -0,0 +1,74 @@
+/* lsfontdir [<font path entry> ...]
+ *
+ * Lists entries from fonts.dir file in given directory paths.
+ * Defaults to "catalogue:/etc/X11/fontpath.d" & "built-ins" if no paths given.
+ */
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * 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 "font-test-utils.h"
+#include <stdio.h>
+#include <assert.h>
+#include <err.h>
+
+int
+main(int argc, char **argv)
+{
+    FontPathElementPtr *fpe_list;
+    FPEFunctions *fpe_functions;
+    int fpe_function_count, fpe_list_count;
+    int i, n;
+
+    fpe_functions = init_font_handlers(&fpe_function_count);
+
+    fpe_list_count = argc - 1;
+    fpe_list = init_font_paths((const char **) argv + 1, &fpe_list_count);
+
+    for (i = 0; i < fpe_list_count; i++) {
+	FontPathElementPtr fpe = fpe_list[i];
+	FontNamesPtr names;
+	const int max_names_count = 8192;
+	const char *pattern = "*";
+	int result;
+
+	/* Don't allocate max size up front to allow testing expansion code */
+	names = MakeFontNamesRecord(max_names_count / 16);
+	assert(names != NULL);
+
+	result = (*fpe_functions[fpe->type].list_fonts)
+	    (NULL, fpe, pattern, strlen(pattern), max_names_count, names);
+	if (result != Successful)
+	    err(result, "list_font failed for font path %s: error %d",
+		fpe->name, result);
+
+	printf("--- %s:\n", fpe->name);
+	for (n = 0 ; n < names->nnames; n++) {
+	    printf("%s\n", names->names[n]);
+	}
+
+	FreeFontNames(names);
+    }
+
+    return 0;
+}