Squashed 'third_party/cgit/' content from commit 8fc0c81

git-subtree-dir: third_party/cgit git-subtree-split: 8fc0c81bbbed21ee30e8a48b2ab1066a029b7b32
author: Vincent Ambo <Vincent Ambo> 2020-01-11T23·30+0000
committer: Vincent Ambo <Vincent Ambo> 2020-01-11T23·30+0000
commit: 723dc8fbcb1a4609c264758eae420ee2811a2b55 (patch)
tree: 6dea64c58b8973fad49924d6a1f5a5ea0863408c /ui-plain.c
1 files changed, 207 insertions, 0 deletions
diff --git a/ui-plain.c b/ui-plain.c
new file mode 100644
index 000000000000..b73c1cfed15f
--- /dev/null
+++ b/ui-plain.c
@@ -0,0 +1,207 @@
+/* ui-plain.c: functions for output of plain blobs by path
+ *
+ * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+#include "ui-plain.h"
+#include "html.h"
+#include "ui-shared.h"
+
+struct walk_tree_context {
+	int match_baselen;
+	int match;
+};
+
+static int print_object(const struct object_id *oid, const char *path)
+{
+	enum object_type type;
+	char *buf, *mimetype;
+	unsigned long size;
+
+	type = oid_object_info(the_repository, oid, &size);
+	if (type == OBJ_BAD) {
+		cgit_print_error_page(404, "Not found", "Not found");
+		return 0;
+	}
+
+	buf = read_object_file(oid, &type, &size);
+	if (!buf) {
+		cgit_print_error_page(404, "Not found", "Not found");
+		return 0;
+	}
+
+	mimetype = get_mimetype_for_filename(path);
+	ctx.page.mimetype = mimetype;
+
+	if (!ctx.repo->enable_html_serving) {
+		html("X-Content-Type-Options: nosniff\n");
+		html("Content-Security-Policy: default-src 'none'\n");
+		if (mimetype) {
+			/* Built-in white list allows PDF and everything that isn't text/ and application/ */
+			if ((!strncmp(mimetype, "text/", 5) || !strncmp(mimetype, "application/", 12)) && strcmp(mimetype, "application/pdf"))
+				ctx.page.mimetype = NULL;
+		}
+	}
+
+	if (!ctx.page.mimetype) {
+		if (buffer_is_binary(buf, size)) {
+			ctx.page.mimetype = "application/octet-stream";
+			ctx.page.charset = NULL;
+		} else {
+			ctx.page.mimetype = "text/plain";
+		}
+	}
+	ctx.page.filename = path;
+	ctx.page.size = size;
+	ctx.page.etag = oid_to_hex(oid);
+	cgit_print_http_headers();
+	html_raw(buf, size);
+	free(mimetype);
+	free(buf);
+	return 1;
+}
+
+static char *buildpath(const char *base, int baselen, const char *path)
+{
+	if (path[0])
+		return fmtalloc("%.*s%s/", baselen, base, path);
+	else
+		return fmtalloc("%.*s/", baselen, base);
+}
+
+static void print_dir(const struct object_id *oid, const char *base,
+		      int baselen, const char *path)
+{
+	char *fullpath, *slash;
+	size_t len;
+
+	fullpath = buildpath(base, baselen, path);
+	slash = (fullpath[0] == '/' ? "" : "/");
+	ctx.page.etag = oid_to_hex(oid);
+	cgit_print_http_headers();
+	htmlf("<html><head><title>%s", slash);
+	html_txt(fullpath);
+	htmlf("</title></head>\n<body>\n<h2>%s", slash);
+	html_txt(fullpath);
+	html("</h2>\n<ul>\n");
+	len = strlen(fullpath);
+	if (len > 1) {
+		fullpath[len - 1] = 0;
+		slash = strrchr(fullpath, '/');
+		if (slash)
+			*(slash + 1) = 0;
+		else {
+			free(fullpath);
+			fullpath = NULL;
+		}
+		html("<li>");
+		cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+				fullpath);
+		html("</li>\n");
+	}
+	free(fullpath);
+}
+
+static void print_dir_entry(const struct object_id *oid, const char *base,
+			    int baselen, const char *path, unsigned mode)
+{
+	char *fullpath;
+
+	fullpath = buildpath(base, baselen, path);
+	if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
+		fullpath[strlen(fullpath) - 1] = 0;
+	html("  <li>");
+	if (S_ISGITLINK(mode)) {
+		cgit_submodule_link(NULL, fullpath, oid_to_hex(oid));
+	} else
+		cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
+				fullpath);
+	html("</li>\n");
+	free(fullpath);
+}
+
+static void print_dir_tail(void)
+{
+	html(" </ul>\n</body></html>\n");
+}
+
+static int walk_tree(const struct object_id *oid, struct strbuf *base,
+		const char *pathname, unsigned mode, int stage, void *cbdata)
+{
+	struct walk_tree_context *walk_tree_ctx = cbdata;
+
+	if (base->len == walk_tree_ctx->match_baselen) {
+		if (S_ISREG(mode) || S_ISLNK(mode)) {
+			if (print_object(oid, pathname))
+				walk_tree_ctx->match = 1;
+		} else if (S_ISDIR(mode)) {
+			print_dir(oid, base->buf, base->len, pathname);
+			walk_tree_ctx->match = 2;
+			return READ_TREE_RECURSIVE;
+		}
+	} else if (base->len < INT_MAX && (int)base->len > walk_tree_ctx->match_baselen) {
+		print_dir_entry(oid, base->buf, base->len, pathname, mode);
+		walk_tree_ctx->match = 2;
+	} else if (S_ISDIR(mode)) {
+		return READ_TREE_RECURSIVE;
+	}
+
+	return 0;
+}
+
+static int basedir_len(const char *path)
+{
+	char *p = strrchr(path, '/');
+	if (p)
+		return p - path + 1;
+	return 0;
+}
+
+void cgit_print_plain(void)
+{
+	const char *rev = ctx.qry.sha1;
+	struct object_id oid;
+	struct commit *commit;
+	struct pathspec_item path_items = {
+		.match = ctx.qry.path,
+		.len = ctx.qry.path ? strlen(ctx.qry.path) : 0
+	};
+	struct pathspec paths = {
+		.nr = 1,
+		.items = &path_items
+	};
+	struct walk_tree_context walk_tree_ctx = {
+		.match = 0
+	};
+
+	if (!rev)
+		rev = ctx.qry.head;
+
+	if (get_oid(rev, &oid)) {
+		cgit_print_error_page(404, "Not found", "Not found");
+		return;
+	}
+	commit = lookup_commit_reference(the_repository, &oid);
+	if (!commit || parse_commit(commit)) {
+		cgit_print_error_page(404, "Not found", "Not found");
+		return;
+	}
+	if (!path_items.match) {
+		path_items.match = "";
+		walk_tree_ctx.match_baselen = -1;
+		print_dir(&commit->maybe_tree->object.oid, "", 0, "");
+		walk_tree_ctx.match = 2;
+	}
+	else
+		walk_tree_ctx.match_baselen = basedir_len(path_items.match);
+	read_tree_recursive(the_repository, commit->maybe_tree,
+		"", 0, 0, &paths, walk_tree, &walk_tree_ctx);
+	if (!walk_tree_ctx.match)
+		cgit_print_error_page(404, "Not found", "Not found");
+	else if (walk_tree_ctx.match == 2)
+		print_dir_tail();
+}
author	Vincent Ambo <Vincent Ambo>	2020-01-11T23·30+0000
committer	Vincent Ambo <Vincent Ambo>	2020-01-11T23·30+0000
commit	723dc8fbcb1a4609c264758eae420ee2811a2b55 (patch)
tree	6dea64c58b8973fad49924d6a1f5a5ea0863408c /ui-plain.c