/* 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) */ #define USE_THE_REPOSITORY_VARIABLE #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 = odb_read_object_info(the_repository->objects, oid, &size);	if (type == OBJ_BAD) {		cgit_print_error_page(404, "Not found", "Not found");		return 0;	} 	buf = odb_read_object(the_repository->objects, 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.oid,				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.oid,				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, 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){	const char *p = strrchr(path, '/');	if (p)		return p - path + 1;	return 0;} void cgit_print_plain(void){	const char *rev = ctx.qry.oid;	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 (repo_get_oid(the_repository, rev, &oid)) {		cgit_print_error_page(404, "Not found", "Not found");		return;	}	commit = lookup_commit_reference(the_repository, &oid);	if (!commit || repo_parse_commit(the_repository, 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(get_commit_tree_oid(commit), "", 0, "");		walk_tree_ctx.match = 2;	}	else		walk_tree_ctx.match_baselen = basedir_len(path_items.match);	read_tree(the_repository, repo_get_commit_tree(the_repository, commit),		  &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();}