/* ui-blob.c: show blob content * * 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-blob.h"#include "html.h"#include "ui-shared.h" struct walk_tree_context {	const char *match_path;	struct object_id *matched_oid;	unsigned int found_path:1;	unsigned int file_only:1;}; 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 (walk_tree_ctx->file_only && !S_ISREG(mode))		return READ_TREE_RECURSIVE;	if (strncmp(base->buf, walk_tree_ctx->match_path, base->len)		|| strcmp(walk_tree_ctx->match_path + base->len, pathname))		return READ_TREE_RECURSIVE;	oidcpy(walk_tree_ctx->matched_oid, oid);	walk_tree_ctx->found_path = 1;	return 0;} int cgit_ref_path_exists(const char *path, const char *ref, int file_only){	struct object_id oid;	unsigned long size;	struct pathspec_item path_items = {		.match = xstrdup(path),		.len = strlen(path)	};	struct pathspec paths = {		.nr = 1,		.items = &path_items	};	struct walk_tree_context walk_tree_ctx = {		.match_path = path,		.matched_oid = &oid,		.found_path = 0,		.file_only = file_only	}; 	if (get_oid(ref, &oid))		goto done;	if (oid_object_info(the_repository, &oid, &size) != OBJ_COMMIT)		goto done;	read_tree(the_repository,		  repo_get_commit_tree(the_repository, lookup_commit_reference(the_repository, &oid)),		  &paths, walk_tree, &walk_tree_ctx); done:	free(path_items.match);	return walk_tree_ctx.found_path;} int cgit_print_file(char *path, const char *head, int file_only){	struct object_id oid;	enum object_type type;	char *buf;	unsigned long size;	struct commit *commit;	struct pathspec_item path_items = {		.match = path,		.len = strlen(path)	};	struct pathspec paths = {		.nr = 1,		.items = &path_items	};	struct walk_tree_context walk_tree_ctx = {		.match_path = path,		.matched_oid = &oid,		.found_path = 0,		.file_only = file_only	}; 	if (get_oid(head, &oid))		return -1;	type = oid_object_info(the_repository, &oid, &size);	if (type == OBJ_COMMIT) {		commit = lookup_commit_reference(the_repository, &oid);		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),			  &paths, walk_tree, &walk_tree_ctx);		if (!walk_tree_ctx.found_path)			return -1;		type = oid_object_info(the_repository, &oid, &size);	}	if (type == OBJ_BAD)		return -1;	buf = read_object_file(&oid, &type, &size);	if (!buf)		return -1;	buf[size] = '\0';	html_raw(buf, size);	free(buf);	return 0;} void cgit_print_blob(const char *hex, char *path, const char *head, int file_only){	struct object_id oid;	enum object_type type;	char *buf;	unsigned long size;	struct commit *commit;	struct pathspec_item path_items = {		.match = path,		.len = path ? strlen(path) : 0	};	struct pathspec paths = {		.nr = 1,		.items = &path_items	};	struct walk_tree_context walk_tree_ctx = {		.match_path = path,		.matched_oid = &oid,		.found_path = 0,		.file_only = file_only	}; 	if (hex) {		if (get_oid_hex(hex, &oid)) {			cgit_print_error_page(400, "Bad request",					"Bad hex value: %s", hex);			return;		}	} else {		if (get_oid(head, &oid)) {			cgit_print_error_page(404, "Not found",					"Bad ref: %s", head);			return;		}	} 	type = oid_object_info(the_repository, &oid, &size); 	if ((!hex) && type == OBJ_COMMIT && path) {		commit = lookup_commit_reference(the_repository, &oid);		read_tree(the_repository, repo_get_commit_tree(the_repository, commit),			  &paths, walk_tree, &walk_tree_ctx);		type = oid_object_info(the_repository, &oid, &size);	} 	if (type == OBJ_BAD) {		cgit_print_error_page(404, "Not found",				"Bad object name: %s", hex);		return;	} 	buf = read_object_file(&oid, &type, &size);	if (!buf) {		cgit_print_error_page(500, "Internal server error",				"Error reading object %s", hex);		return;	} 	buf[size] = '\0';	if (buffer_is_binary(buf, size))		ctx.page.mimetype = "application/octet-stream";	else		ctx.page.mimetype = "text/plain";	ctx.page.filename = path; 	html("X-Content-Type-Options: nosniff\n");	html("Content-Security-Policy: default-src 'none'\n");	cgit_print_http_headers();	html_raw(buf, size);	free(buf);}