patch parsing: parse binary patch files

src/patch.c

@@ -65,6 +65,15 @@ static int parse_advance_ws(patch_parse_ctx *ctx)
 	return ret;
 }
 
+static int parse_advance_nl(patch_parse_ctx *ctx)
+{
+	if (ctx->line_len != 1 || ctx->line[0] != '\n')
+		return -1;
+
+	parse_advance_line(ctx);
+	return 0;
+}
+
 static int header_path_len(patch_parse_ctx *ctx)
 {
 	bool inquote = 0;
@@ -354,6 +363,7 @@ typedef struct {
 
 static const header_git_op header_git_ops[] = {
 	{ "@@ -", NULL },
+	{ "GIT binary patch", NULL },
 	{ "--- ", parse_header_git_oldpath },
 	{ "+++ ", parse_header_git_newpath },
 	{ "index ", parse_header_git_index },
@@ -426,7 +436,7 @@ done:
 	return error;
 }
 
-static int parse_number(int *out, patch_parse_ctx *ctx)
+static int parse_number(git_off_t *out, patch_parse_ctx *ctx)
 {
 	const char *end;
 	int64_t num;
@@ -440,12 +450,23 @@ static int parse_number(int *out, patch_parse_ctx *ctx)
 	if (num < 0)
 		return -1;
 
-	*out = (int)num;
+	*out = num;
 	parse_advance_chars(ctx, (end - ctx->line));
 
 	return 0;
 }
 
+static int parse_int(int *out, patch_parse_ctx *ctx)
+{
+	git_off_t num;
+
+	if (parse_number(&num, ctx) < 0 || !git__is_int(num))
+		return -1;
+
+	*out = (int)num;
+	return 0;
+}
+
 static int parse_hunk_header(
 	diff_patch_hunk *hunk,
 	patch_parse_ctx *ctx)
@@ -456,22 +477,22 @@ static int parse_hunk_header(
 	hunk->hunk.new_lines = 1;
 
 	if (parse_advance_expected(ctx, "@@ -", 4) < 0 ||
-		parse_number(&hunk->hunk.old_start, ctx) < 0)
+		parse_int(&hunk->hunk.old_start, ctx) < 0)
 		goto fail;
 
 	if (ctx->line_len > 0 && ctx->line[0] == ',') {
 		if (parse_advance_expected(ctx, ",", 1) < 0 ||
-			parse_number(&hunk->hunk.old_lines, ctx) < 0)
+			parse_int(&hunk->hunk.old_lines, ctx) < 0)
 			goto fail;
 	}
 
 	if (parse_advance_expected(ctx, " +", 2) < 0 ||
-		parse_number(&hunk->hunk.new_start, ctx) < 0)
+		parse_int(&hunk->hunk.new_start, ctx) < 0)
 		goto fail;
 
 	if (ctx->line_len > 0 && ctx->line[0] == ',') {
 		if (parse_advance_expected(ctx, ",", 1) < 0 ||
-			parse_number(&hunk->hunk.new_lines, ctx) < 0)
+			parse_int(&hunk->hunk.new_lines, ctx) < 0)
 			goto fail;
 	}
 
@@ -672,7 +693,110 @@ done:
 	return error;
 }
 
-static int parse_patch_body(
+static int parse_patch_binary_side(
+	git_diff_binary_file *binary,
+	patch_parse_ctx *ctx)
+{
+	git_diff_binary_t type = GIT_DIFF_BINARY_NONE;
+	git_buf base85 = GIT_BUF_INIT, decoded = GIT_BUF_INIT;
+	git_off_t len;
+	int error = 0;
+
+	if (ctx->line_len >= 8 && memcmp(ctx->line, "literal ", 8) == 0) {
+		type = GIT_DIFF_BINARY_LITERAL;
+		parse_advance_chars(ctx, 8);
+	} else if (ctx->line_len >= 6 && memcmp(ctx->line, "delta ", 6) == 0) {
+		type = GIT_DIFF_BINARY_DELTA;
+		parse_advance_chars(ctx, 6);
+	} else {
+		error = parse_err("unknown binary delta type at line %d", ctx->line_num);
+		goto done;
+	}
+
+	if (parse_number(&len, ctx) < 0 || parse_advance_nl(ctx) < 0 || len < 0) {
+		error = parse_err("invalid binary size at line %d", ctx->line_num);
+		goto done;
+	}
+
+	while (ctx->line_len) {
+		char c = ctx->line[0];
+		size_t encoded_len, decoded_len = 0, decoded_orig = decoded.size;
+
+		if (c == '\n')
+			break;
+		else if (c >= 'A' && c <= 'Z')
+			decoded_len = c - 'A' + 1;
+		else if (c >= 'a' && c <= 'z')
+			decoded_len = c - 'a' + 26 + 1;
+
+		if (!decoded_len) {
+			error = parse_err("invalid binary length at line %d", ctx->line_num);
+			goto done;
+		}
+
+		parse_advance_chars(ctx, 1);
+
+		encoded_len = ((decoded_len / 4) + !!(decoded_len % 4)) * 5;
+
+		if (encoded_len > ctx->line_len - 1) {
+			error = parse_err("truncated binary data at line %d", ctx->line_num);
+			goto done;
+		}
+
+		if ((error = git_buf_decode_base85(
+				&decoded, ctx->line, encoded_len, decoded_len)) < 0)
+			goto done;
+
+		if (decoded.size - decoded_orig != decoded_len) {
+			error = parse_err("truncated binary data at line %d", ctx->line_num);
+			goto done;
+		}
+
+		parse_advance_chars(ctx, encoded_len);
+
+		if (parse_advance_nl(ctx) < 0) {
+			error = parse_err("trailing data at line %d", ctx->line_num);
+			goto done;
+		}
+	}
+
+	binary->type = type;
+	binary->inflatedlen = (size_t)len;
+	binary->datalen = decoded.size;
+	binary->data = git_buf_detach(&decoded);
+
+done:
+	git_buf_free(&base85);
+	git_buf_free(&decoded);
+	return error;
+}
+
+static int parse_patch_binary(
+	git_patch *patch,
+	patch_parse_ctx *ctx)
+{
+	int error;
+
+	if (parse_advance_expected(ctx, "GIT binary patch", 16) < 0 ||
+		parse_advance_nl(ctx) < 0)
+		return parse_err("corrupt git binary header at line %d", ctx->line_num);
+
+	/* parse old->new binary diff */
+	if ((error = parse_patch_binary_side(&patch->binary.new_file, ctx)) < 0)
+		return error;
+
+	if (parse_advance_nl(ctx) < 0)
+		return parse_err("corrupt git binary separator at line %d", ctx->line_num);
+
+	/* parse new->old binary diff */
+	if ((error = parse_patch_binary_side(&patch->binary.old_file, ctx)) < 0)
+		return error;
+
+	patch->delta->flags |= GIT_DIFF_FLAG_BINARY;
+	return 0;
+}
+
+static int parse_patch_hunks(
 	git_patch *patch,
 	patch_parse_ctx *ctx)
 {
@@ -698,6 +822,17 @@ done:
 	return error;
 }
 
+static int parse_patch_body(git_patch *patch, patch_parse_ctx *ctx)
+{
+	if (ctx->line_len >= 16 && memcmp(ctx->line, "GIT binary patch", 16) == 0)
+		return parse_patch_binary(patch, ctx);
+
+	else if (ctx->line_len >= 4 && memcmp(ctx->line, "@@ -", 4) == 0)
+		return parse_patch_hunks(patch, ctx);
+
+	return 0;
+}
+
 static int check_patch(git_patch *patch)
 {
 	if (!patch->ofile.file->path && patch->delta->status != GIT_DELTA_ADDED)
@@ -712,8 +847,9 @@ static int check_patch(git_patch *patch)
 	}
 
 	if (patch->delta->status == GIT_DELTA_MODIFIED &&
-		patch->nfile.file->mode == patch->ofile.file->mode &&
-		git_array_size(patch->hunks) == 0)
+			!(patch->delta->flags & GIT_DIFF_FLAG_BINARY) &&
+			patch->nfile.file->mode == patch->ofile.file->mode &&
+			git_array_size(patch->hunks) == 0)
 		return parse_err("patch with no hunks");
 
 	return 0;

tests/apply/fromfile.c

@@ -21,7 +21,9 @@ void test_apply_fromfile__cleanup(void)
 
 static int apply_patchfile(
 	const char *old,
+	size_t old_len,
 	const char *new,
+	size_t new_len,
 	const char *patchfile,
 	const char *filename_expected,
 	unsigned int mode_expected)
@@ -35,13 +37,11 @@ static int apply_patchfile(
 
 	cl_git_pass(git_patch_from_patchfile(&patch, patchfile, strlen(patchfile)));
 
-	error = git_apply__patch(&result, &filename, &mode, old, old ? strlen(old) : 0, patch);
+	error = git_apply__patch(&result, &filename, &mode, old, old_len, patch);
 
 	if (error == 0) {
-		if (new == NULL)
-			cl_assert_equal_i(0, result.size);
-		else
-			cl_assert_equal_s(new, result.ptr);
+		cl_assert_equal_i(new_len, result.size);
+		cl_assert(memcmp(new, result.ptr, new_len) == 0);
 
 		cl_assert_equal_s(filename_expected, filename);
 		cl_assert_equal_i(mode_expected, mode);
@@ -57,7 +57,9 @@ static int apply_patchfile(
 
 static int validate_and_apply_patchfile(
 	const char *old,
+	size_t old_len,
 	const char *new,
+	size_t new_len,
 	const char *patchfile,
 	const git_diff_options *diff_opts,
 	const char *filename_expected,
@@ -68,14 +70,14 @@ static int validate_and_apply_patchfile(
 	int error;
 
 	cl_git_pass(git_patch_from_buffers(&patch_fromdiff,
-		old, old ? strlen(old) : 0, "file.txt",
-		new, new ? strlen(new) : 0, "file.txt",
+		old, old_len, "file.txt",
+		new, new_len, "file.txt",
 		diff_opts));
 	cl_git_pass(git_patch_to_buf(&validated, patch_fromdiff));
 
 	cl_assert_equal_s(patchfile, validated.ptr);
 
-	error = apply_patchfile(old, new, patchfile, filename_expected, mode_expected);
+	error = apply_patchfile(old, old_len, new, new_len, patchfile, filename_expected, mode_expected);
 
 	git_buf_free(&validated);
 	git_patch_free(patch_fromdiff);
@@ -85,8 +87,10 @@ static int validate_and_apply_patchfile(
 
 void test_apply_fromfile__change_middle(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL,
-		FILE_CHANGE_MIDDLE, PATCH_ORIGINAL_TO_CHANGE_MIDDLE, NULL,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
+		PATCH_ORIGINAL_TO_CHANGE_MIDDLE, NULL,
 		"b/file.txt", 0100644));
 }
 
@@ -95,28 +99,36 @@ void test_apply_fromfile__change_middle_nocontext(void)
 	git_diff_options diff_opts = GIT_DIFF_OPTIONS_INIT;
 	diff_opts.context_lines = 0;
 
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL,
-		FILE_CHANGE_MIDDLE, PATCH_ORIGINAL_TO_CHANGE_MIDDLE_NOCONTEXT,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
+		PATCH_ORIGINAL_TO_CHANGE_MIDDLE_NOCONTEXT,
 		&diff_opts, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__change_firstline(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL,
-		FILE_CHANGE_FIRSTLINE, PATCH_ORIGINAL_TO_CHANGE_FIRSTLINE, NULL,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_FIRSTLINE, strlen(FILE_CHANGE_FIRSTLINE),
+		PATCH_ORIGINAL_TO_CHANGE_FIRSTLINE, NULL,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__lastline(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL,
-		FILE_CHANGE_LASTLINE, PATCH_ORIGINAL_TO_CHANGE_LASTLINE, NULL,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_LASTLINE, strlen(FILE_CHANGE_LASTLINE),
+		PATCH_ORIGINAL_TO_CHANGE_LASTLINE, NULL,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__prepend(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, FILE_PREPEND,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_PREPEND, strlen(FILE_PREPEND),
 		PATCH_ORIGINAL_TO_PREPEND, NULL, "b/file.txt", 0100644));
 }
 
@@ -125,14 +137,18 @@ void test_apply_fromfile__prepend_nocontext(void)
 	git_diff_options diff_opts = GIT_DIFF_OPTIONS_INIT;
 	diff_opts.context_lines = 0;
 
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, FILE_PREPEND,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_PREPEND, strlen(FILE_PREPEND),
 		PATCH_ORIGINAL_TO_PREPEND_NOCONTEXT, &diff_opts,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__append(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, FILE_APPEND,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_APPEND, strlen(FILE_APPEND),
 		PATCH_ORIGINAL_TO_APPEND, NULL, "b/file.txt", 0100644));
 }
 
@@ -141,82 +157,108 @@ void test_apply_fromfile__append_nocontext(void)
 	git_diff_options diff_opts = GIT_DIFF_OPTIONS_INIT;
 	diff_opts.context_lines = 0;
 
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, FILE_APPEND,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_APPEND, strlen(FILE_APPEND),
 		PATCH_ORIGINAL_TO_APPEND_NOCONTEXT, &diff_opts,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__prepend_and_append(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL,
-		FILE_PREPEND_AND_APPEND, PATCH_ORIGINAL_TO_PREPEND_AND_APPEND, NULL,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_PREPEND_AND_APPEND, strlen(FILE_PREPEND_AND_APPEND),
+		PATCH_ORIGINAL_TO_PREPEND_AND_APPEND, NULL,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__to_empty_file(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, "",
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		"", 0,
 		PATCH_ORIGINAL_TO_EMPTY_FILE, NULL, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__from_empty_file(void)
 {
-	cl_git_pass(validate_and_apply_patchfile("", FILE_ORIGINAL,
+	cl_git_pass(validate_and_apply_patchfile(
+		"", 0,
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
 		PATCH_EMPTY_FILE_TO_ORIGINAL, NULL, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__add(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(NULL, FILE_ORIGINAL,
+	cl_git_pass(validate_and_apply_patchfile(
+		NULL, 0,
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
 		PATCH_ADD_ORIGINAL, NULL, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__delete(void)
 {
-	cl_git_pass(validate_and_apply_patchfile(FILE_ORIGINAL, NULL,
+	cl_git_pass(validate_and_apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		NULL, 0,
 		PATCH_DELETE_ORIGINAL, NULL, NULL, 0));
 }
 
 
 void test_apply_fromfile__rename_exact(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_ORIGINAL,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
 		PATCH_RENAME_EXACT, "b/newfile.txt", 0100644));
 }
 
 void test_apply_fromfile__rename_similar(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_CHANGE_MIDDLE,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
 		PATCH_RENAME_SIMILAR, "b/newfile.txt", 0100644));
 }
 
 void test_apply_fromfile__rename_similar_quotedname(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_CHANGE_MIDDLE,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
 		PATCH_RENAME_SIMILAR_QUOTEDNAME, "b/foo\"bar.txt", 0100644));
 }
 
 void test_apply_fromfile__modechange(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_ORIGINAL,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
 		PATCH_MODECHANGE_UNCHANGED, "b/file.txt", 0100755));
 }
 
 void test_apply_fromfile__modechange_with_modification(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_CHANGE_MIDDLE,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
 		PATCH_MODECHANGE_MODIFIED, "b/file.txt", 0100755));
 }
 
 void test_apply_fromfile__noisy(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_CHANGE_MIDDLE,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
 		PATCH_NOISY, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__noisy_nocontext(void)
 {
-	cl_git_pass(apply_patchfile(FILE_ORIGINAL, FILE_CHANGE_MIDDLE,
+	cl_git_pass(apply_patchfile(
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_CHANGE_MIDDLE, strlen(FILE_CHANGE_MIDDLE),
 		PATCH_NOISY_NOCONTEXT, "b/file.txt", 0100644));
 }
 
@@ -250,15 +292,19 @@ void test_apply_fromfile__fail_corrupt_githeader(void)
 
 void test_apply_fromfile__empty_context(void)
 {
-	cl_git_pass(apply_patchfile(FILE_EMPTY_CONTEXT_ORIGINAL,
-		FILE_EMPTY_CONTEXT_MODIFIED, PATCH_EMPTY_CONTEXT,
+	cl_git_pass(apply_patchfile(
+		FILE_EMPTY_CONTEXT_ORIGINAL, strlen(FILE_EMPTY_CONTEXT_ORIGINAL),
+		FILE_EMPTY_CONTEXT_MODIFIED, strlen(FILE_EMPTY_CONTEXT_MODIFIED),
+		PATCH_EMPTY_CONTEXT,
 		"b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__append_no_nl(void)
 {
 	cl_git_pass(validate_and_apply_patchfile(
-		FILE_ORIGINAL, FILE_APPEND_NO_NL, PATCH_APPEND_NO_NL, NULL, "b/file.txt", 0100644));
+		FILE_ORIGINAL, strlen(FILE_ORIGINAL),
+		FILE_APPEND_NO_NL, strlen(FILE_APPEND_NO_NL),
+		PATCH_APPEND_NO_NL, NULL, "b/file.txt", 0100644));
 }
 
 void test_apply_fromfile__fail_missing_new_file(void)
@@ -300,29 +346,51 @@ void test_apply_fromfile__fail_not_a_patch(void)
 		strlen(PATCH_NOT_A_PATCH)));
 }
 
-/*
-void test_apply_fromdiff__binary_change_must_be_reversible(void)
+void test_apply_fromfile__binary_add(void)
 {
-	git_buf original = GIT_BUF_INIT, modified = GIT_BUF_INIT,
-		result = GIT_BUF_INIT;
-	char *filename;
-	unsigned int mode;
+	cl_git_pass(apply_patchfile(
+		NULL, 0,
+		FILE_BINARY_DELTA_MODIFIED, FILE_BINARY_DELTA_MODIFIED_LEN,
+		PATCH_BINARY_ADD, "b/binary.bin", 0100644));
+}
 
-	original.ptr = FILE_BINARY_DELTA_ORIGINAL;
-	original.size = FILE_BINARY_DELTA_ORIGINAL_LEN;
+void test_apply_fromfile__binary_change_delta(void)
+{
+	cl_git_pass(apply_patchfile(
+		FILE_BINARY_DELTA_ORIGINAL, FILE_BINARY_DELTA_ORIGINAL_LEN,
+		FILE_BINARY_DELTA_MODIFIED, FILE_BINARY_DELTA_MODIFIED_LEN,
+		PATCH_BINARY_DELTA, "b/binary.bin", 0100644));
+}
 
-	modified.ptr = FILE_BINARY_DELTA_MODIFIED;
-	modified.size = FILE_BINARY_DELTA_MODIFIED_LEN;
+void test_apply_fromfile__binary_change_literal(void)
+{
+	cl_git_pass(apply_patchfile(
+		FILE_BINARY_LITERAL_ORIGINAL, FILE_BINARY_LITERAL_ORIGINAL_LEN,
+		FILE_BINARY_LITERAL_MODIFIED, FILE_BINARY_LITERAL_MODIFIED_LEN,
+		PATCH_BINARY_LITERAL, "b/binary.bin", 0100644));
+}
 
-	cl_git_fail(git_apply__patch(&result, &filename, &mode, old ? old->ptr : NULL, old ? old->size : 0, patch);
+void test_apply_fromfile__binary_delete(void)
+{
+	cl_git_pass(apply_patchfile(
+		FILE_BINARY_DELTA_MODIFIED, FILE_BINARY_DELTA_MODIFIED_LEN,
+		NULL, 0,
+		PATCH_BINARY_DELETE, NULL, 0));
+}
 
-	cl_git_fail(apply_gitbuf(
-		&original, "binary.bin",
-		&modified, "binary.bin",
-		PATCH_BINARY_NOT_REVERSIBLE, &binary_opts));
-	cl_assert_equal_s("binary patch did not apply cleanly", giterr_last()->message);
+void test_apply_fromfile__binary_change_does_not_apply(void)
+{
+	/* try to apply patch backwards, ensure it does not apply */
+	cl_git_fail(apply_patchfile(
+		FILE_BINARY_DELTA_MODIFIED, FILE_BINARY_DELTA_MODIFIED_LEN,
+		FILE_BINARY_DELTA_ORIGINAL, FILE_BINARY_DELTA_ORIGINAL_LEN,
+		PATCH_BINARY_DELTA, "b/binary.bin", 0100644));
+}
 
-	git_buf_free(&result);
-	git__free(filename);
+void test_apply_fromfile__binary_change_must_be_reversible(void)
+{
+	cl_git_fail(apply_patchfile(
+		FILE_BINARY_DELTA_MODIFIED, FILE_BINARY_DELTA_MODIFIED_LEN,
+		NULL, 0,
+		PATCH_BINARY_NOT_REVERSIBLE, NULL, 0));
 }
-*/