Roxen.git/server/base_server/module.pike:23bf7fdfba0bf09a65adc6e986dad8da20eff4b2

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2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 // This file is part of Roxen WebServer. // Copyright © 1996 - 2009, Roxen IS. // $Id$ #include <module_constants.h> #include <module.h> #include <request_trace.h> constant __pragma_save_parent__ = 1; // Tell Pike.count_memory this is global. constant pike_cycle_depth = 0; inherit "basic_defvar"; mapping(string:array(int)) error_log=([]); constant is_module = 1; // constant module_type = MODULE_ZERO; // constant module_name = "Unnamed module"; // constant module_doc = "Undocumented"; constant module_unique = 1; //! Specifies that the module is opaque when it comes WebDAV //! requests. Normally, recursive WebDAV requests will iterate through //! all matching location modules even after a successful result has //! been returned by some module. With this flag set, iteration will //! stop after the call to this module. Useful if the module wants to //! handle all requests for the specified location itself with no //! fallback to other modules. constant webdav_opaque = 0; private Configuration _my_configuration; private string _module_local_identifier; private string _module_identifier = lambda() { mixed init_info = roxen->bootstrap_info->get(); if (arrayp (init_info)) { [_my_configuration, _module_local_identifier] = init_info; return _my_configuration->name + "/" + _module_local_identifier; } #ifdef DEBUG else error ("Got invalid bootstrap info for module: %O\n", init_info); #endif }(); protected mapping _api_functions = ([]); class ModuleJSONLogger { inherit Logger.BaseJSONLogger; void create(object parent_config) { string name = combine_path_unix(parent_config->json_logger->logger_name, module_local_id()); ::create(name, UNDEFINED, parent_config->json_logger); } } // Module local JSON logger private ModuleJSONLogger json_logger; string|array(string) module_creator; string module_url; RXML.TagSet module_tag_set; /* These functions exist in here because otherwise the messages in the * event log do not always end up in the correct module/configuration. * And the reason for that is that if the messages are logged from * subclasses in the module, the DWIM in roxenlib.pike cannot see that * they are logged from a module. This solution is not really all that * beautiful, but it works. :-) */ void report_fatal(sprintf_format fmt, sprintf_args ... args) { predef::report_fatal(fmt, @args); } void report_error(sprintf_format fmt, sprintf_args ... args) { predef::report_error(fmt, @args); } void report_warning(sprintf_format fmt, sprintf_args ... args) { predef::report_warning(fmt, @args); } void report_notice(sprintf_format fmt, sprintf_args ... args) { predef::report_notice(fmt, @args); } void report_debug(sprintf_format fmt, sprintf_args ... args) { predef::report_debug(fmt, @args); } void report_warning_sparsely (sprintf_format fmt, sprintf_args ... args) {predef::report_warning_sparsely (fmt, @args);} void report_error_sparsely (sprintf_format fmt, sprintf_args ... args) {predef::report_error_sparsely (fmt, @args);} void log_event (string facility, string action, string resource, void|mapping(string:mixed) info) //! Log an event. See @[Configuration.log_event] for details. //! //! @[facility] may be zero. The local module identifier as returned //! by @[module_local_id] is used as facility in that case. { _my_configuration->log_event (facility || _module_local_identifier, action, resource, info); } void json_log_trace(string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.TRACE); } void json_log_debug(string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.DBG); } void json_log_info (string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.INFO); } void json_log_warn (string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.WARN); } void json_log_error(string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.ERROR); } void json_log_fatal(string|mapping log_msg) { json_log_with_level(log_msg, Logger.BaseJSONLogger.FATAL); } // Helper method to force a specific logging level void json_log_with_level(string|mapping log_msg, int level) { if (stringp(log_msg)) { log_msg = ([ "msg" : log_msg, ]); } log_msg->level = level; json_log(log_msg); } // Log a message more or less verbatim via the JSON logger infrastructure void json_log(string|mapping log_msg) { if (stringp(log_msg)) { log_msg = ([ "msg" : log_msg, ]); } if (json_logger && functionp(json_logger->log)) { json_logger->log(log_msg); } } string module_identifier() //! Returns a string that uniquely identifies this module instance //! within the server. The identifier is the same as //! @[Roxen.get_module] and @[Roxen.get_modname] handles. { return _module_identifier; } string module_local_id() //! Returns a string that uniquely identifies this module instance //! within the configuration. The returned string is the same as the //! part after the first '/' in the one returned from //! @[module_identifier]. { return _module_local_identifier; } RoxenModule this_module() { return this_object(); // To be used from subclasses. } //! @ignore DECLARE_OBJ_COUNT; //! @endignore string _sprintf() { return sprintf ("RoxenModule(%s)" + OBJ_COUNT, _module_identifier || "?"); } array register_module() { return ({ this_object()->module_type, this_object()->module_name, this_object()->module_doc, 0, module_unique, this_object()->module_locked, this_object()->module_counter, }); } string fix_cvs(string from) { from = replace(from, ({ "$", "Id: "," Exp $" }), ({"","",""})); sscanf(from, "%*s,v %s", from); return replace(from,"/","-"); } int module_dependencies(Configuration configuration, array (string) modules, int|void now) //! If your module depends on other modules, call this function to //! ensure that those modules get loaded. //! //! @param configuration //! The configuration for the modules. Use zero for the same as this //! module. //! //! @param modules //! An array of module identifiers. A module identifier is either //! the name of the pike file minus extension, or a string on the //! form that @[Roxen.get_modname] returns. In the latter case, the //! @tt{<config name>@} and @tt{<copy>@} parts are ignored. //! //! @param now //! If this flag is nonzero then any modules that aren't already //! loaded get loaded (and started) right away, so that the code //! following the @[module_dependencies] call can start using them. //! //! Otherwise the function only ensures that the modules exist in //! the configuration and they will be loaded sometime during the //! startup of it. //! //! @note //! This function is only intended to be called from @[start]. //! //! @note //! The @[now] flag does not affect calls to //! @[ready_to_receive_requests] in the listed modules. I.e. even if //! you have declared a dependency on a module and have @[now] set, //! you cannot assume its @[ready_to_receive_requests] function has //! run (in fact, you can almost safely assume it hasn't). You can //! however assume that its @[start] function has been called. { modules = map (modules, lambda (string modname) { sscanf ((modname / "/")[-1], "%[^#]", modname); return modname; }); Configuration conf = configuration || my_configuration(); if (!conf) report_warning ("Configuration not resolved; module(s) %s that %O " "depend on weren't added.\n", String.implode_nicely (modules), module_identifier() || master()->describe_program(this_program) || "unknown module"); else conf->add_modules( modules, now ); return 1; } string file_name_and_stuff() { return ("Loaded from: "+(roxen->filename(this_object()))+" "+ (this_object()->cvs_version? "CVS Version: "+ fix_cvs(this_object()->cvs_version)+"\n":"")); } Configuration my_configuration() //! Returns the Configuration object of the virtual server the module //! belongs to. { return _my_configuration; } final void set_configuration(Configuration c) { if(_my_configuration && _my_configuration != c) error("set_configuration() called twice.\n"); _my_configuration = c; // if configuration changes, we should reinitialize our JSON logger too! json_logger = ModuleJSONLogger(_my_configuration); } void set_module_creator(string|array(string) c) //! Set the name and optionally email address of the author of the //! module. Names on the format "author name <author_email>" will //! end up as links on the module's information page in the admin //! interface. In the case of multiple authors, an array of such //! strings can be passed. { module_creator = c; } void set_module_url(string to) //! A common way of referring to a location where you maintain //! information about your module or similar. The URL will turn up //! on the module's information page in the admin interface, //! referred to as the module's home page. { module_url = to; } void free_some_sockets_please(){} // These functions have bodies to make module inheritance easier: An // inheriting module can always assume that the module it inherits // have these functions defined and properly proxy the calls to them. // Thus an inherited module should be free to define them later on // even if it didn't have them initially. (Modules need never proxy // calls to the default implementations here.) void start(int variable_save, Configuration conf, void|int newly_added) {} void stop() {} void ready_to_receive_requests (Configuration conf) {} string status() {} string info(Configuration conf) { return (this_object()->register_module()[2]); } string sname( ) { return my_configuration()->otomod[ this_object() ]; } ModuleInfo my_moduleinfo( ) //! Returns the associated @[ModuleInfo] object { string f = sname(); if( f ) return roxen.find_module( (f/"#")[0] ); } void save_me() { my_configuration()->save_one( this_object() ); my_configuration()->module_changed( my_moduleinfo(), this_object() ); } void save() { save_me(); } string comment() { return ""; } string query_internal_location() //! Returns the internal mountpoint, where <ref>find_internal()</ref> //! is mounted. It always ends with a '/'. { if(!_my_configuration) error("Please do not call this function from create()!\n"); return _my_configuration->query_internal_location(this_object()); } string query_absolute_internal_location(RequestID id) //! Returns the internal mountpoint as an absolute path. It always //! ends with a '/'. { return (id->misc->site_prefix_path || "") + query_internal_location(); } string query_location() //! Returns the mountpoint as an absolute path. The default //! implementation uses the "location" configuration variable in the //! module. { string s; catch{s = query("location");}; return s; } array(string) location_urls() //! Returns an array of all locations where the module is mounted. { string loc = query_location(); if (!loc) return ({}); if(!_my_configuration) error("Please do not call this function from create()!\n"); array(string) urls = copy_value(_my_configuration->query("URLs")); string hostname; if (string world_url = _my_configuration->query ("MyWorldLocation")) if (sizeof(world_url)) { Standards.URI uri = Standards.URI(world_url); hostname = uri->host; } if (!hostname) hostname = gethostname(); for (int i = 0; i < sizeof (urls); i++) { urls[i] = (urls[i]/"#")[0]; if (sizeof (urls[i]/"*") == 2) urls[i] = replace(urls[i], "*", hostname); } return map (urls, `+, loc[1..]); } string location_url() //! Returns an http or https url including the modules mountpoint. The //! ip-number for the corresponding port will be added to the fragment //! of the url. An http url will be prioritized over an https url. { string short_array(array a) { return "({ " + (map(a, lambda(object o) { return sprintf("%O", o); })*", ") + " })"; }; string loc = query_location(); if(!loc) return 0; if(!_my_configuration) error("Please do not call this function from create()!\n"); string hostname; string world_url = _my_configuration->query("MyWorldLocation"); if (world_url && sizeof(world_url)) { Standards.URI uri = Standards.URI(world_url); hostname = uri->host; } if(!hostname) hostname = gethostname(); #ifdef LOCATION_URL_DEBUG werror(" Hostname: %O\n", hostname); #endif Standards.URI candidate_uri; array(string) urls = filter(_my_configuration->registered_urls, has_prefix, "http:") + filter(_my_configuration->registered_urls, has_prefix, "https:"); foreach(urls, string url) { #ifdef LOCATION_URL_DEBUG werror(" URL: %s\n", url); #endif mapping url_info = roxen.urls[url]; if(!url_info || !url_info->port || url_info->conf != _my_configuration) continue; Protocol p = url_info->port; #ifdef LOCATION_URL_DEBUG werror(" Protocol: %s\n", p); #endif Standards.URI uri = Standards.URI(url); string ip = p->ip || "127.0.0.1"; if (ip == "::") ip = "::1"; uri->fragment = "ip=" + ip; if(has_value(uri->host, "*") || has_value(uri->host, "?")) if(glob(uri->host, hostname)) uri->host = hostname; else { if(!candidate_uri) { candidate_uri = uri; candidate_uri->host = hostname; } continue; } uri->path += loc[1..]; return (string)uri; } if(candidate_uri) { report_warning("Warning: Could not find any suitable ports, continuing anyway. " "Please make sure that your Primary Server URL matches " "at least one port. Primary Server URL: %O, URLs: %s.\n", world_url, short_array(urls)); candidate_uri->path += loc[1..]; return (string)candidate_uri; } return 0; } /* By default, provide nothing. */ multiset(string) query_provides() { return 0; } function(RequestID:int|mapping) query_seclevels() { if(catch(query("_seclevels")) || (query("_seclevels") == 0)) return 0; return roxen.compile_security_pattern(query("_seclevels"),this_object()); } void set_status_for_path (string path, RequestID id, int status_code, string|void message, mixed... args) //! Register a status to be included in the response that applies only //! for the given path. This is used for recursive operations that can //! yield different results for different encountered files or //! directories. //! //! The status is stored in the @[MultiStatus] object returned by //! @[id->get_multi_status]. The server will use it to make a 207 //! Multi-Status response iff the module returns an empty mapping as //! response. //! //! @param path //! Path (below the filesystem location) to which the status applies. //! //! @param status_code //! The HTTP status code. //! //! @param message //! If given, it's a message to include in the response. The //! message may contain line feeds ('\n') and ISO-8859-1 //! characters in the ranges 32..126 and 128..255. Line feeds are //! converted to spaces if the response format doesn't allow them. //! //! @param args //! If there are more arguments after @[message] then @[message] //! is taken as an @[sprintf] style format string which is used to //! format @[args]. //! //! @note //! This function is just a wrapper for @[id->set_status_for_path] //! that corrects for the filesystem location. //! //! @seealso //! @[RequestID.set_status_for_path], @[Roxen.http_status] { if (sizeof (args)) message = sprintf (message, @args); id->set_status_for_path (query_location() + path, status_code, message); } Stat stat_file(string f, RequestID id){} array(string) find_dir(string f, RequestID id){} mapping(string:Stat) find_dir_stat(string f, RequestID id) { SIMPLE_TRACE_ENTER(this, "find_dir_stat(): %O", f); array(string) files = find_dir(f, id); mapping(string:Stat) res = ([]); foreach(files || ({}), string fname) { SIMPLE_TRACE_ENTER(this, "stat()'ing %O", f + "/" + fname); Stat st = stat_file(replace(f + "/" + fname, "//", "/"), id); if (st) { res[fname] = st; TRACE_LEAVE("OK"); } else { TRACE_LEAVE("No stat info"); } } TRACE_LEAVE(""); return(res); } class DefaultPropertySet { inherit PropertySet; protected Stat stat; protected void create (string path, string abs_path, RequestID id, Stat stat) { ::create (path, abs_path, id); this_program::stat = stat; } Stat get_stat() {return stat;} protected mapping(string:string) response_headers; mapping(string:string) get_response_headers() { if (!response_headers) { // Old kludge inherited from configuration.try_get_file. if (!id->misc->common) id->misc->common = ([]); RequestID sub_id = id->clone_me(); sub_id->misc->common = id->misc->common; sub_id->raw_url = sub_id->not_query = query_location() + path; if ((sub_id->raw_url != id->raw_url) && (id->raw_url != id->not_query)) { // sub_id->raw_url = replace (id->raw_url, id->not_query, sub_id->not_query); sub_id->raw_url = sub_id->not_query + (({ "" }) + (id->raw_url/"?")[1..]) * "?"; } sub_id->method = "HEAD"; mapping(string:mixed)|int(-1..0)|object res = find_file (path, sub_id); if (res == -1) res = ([]); else if (objectp (res)) { string ext; if(stringp(sub_id->extension)) { sub_id->not_query += sub_id->extension; ext = lower_case(Roxen.extension(sub_id->not_query, sub_id)); } array(string) tmp=sub_id->conf->type_from_filename(sub_id->not_query, 1, ext); if(tmp) res = ([ "file":res, "type":tmp[0], "encoding":tmp[1] ]); else res = (["file": res]); } response_headers = sub_id->make_response_headers (res); destruct (sub_id); } return response_headers; } } //! Return the set of properties for @[path]. //! //! @returns //! Returns @tt{0@} (zero) if @[path] does not exist. //! //! Returns an error mapping if there's some other error accessing //! the properties. //! //! Otherwise returns a @[PropertySet] object. //! //! @seealso //! @[query_property()] PropertySet|mapping(string:mixed) query_property_set(string path, RequestID id) { SIMPLE_TRACE_ENTER (this, "Querying properties on %O", path); Stat st = stat_file(path, id); if (!st) { SIMPLE_TRACE_LEAVE ("No such file or dir"); return 0; } PropertySet res = DefaultPropertySet(path, query_location()+path, id, st); SIMPLE_TRACE_LEAVE (""); return res; } //! Returns the value of the specified property, or an error code //! mapping. //! //! @note //! Returning a string is shorthand for returning an array //! with a single text node. //! //! @seealso //! @[query_property_set()] string|array(Parser.XML.Tree.SimpleNode)|mapping(string:mixed) query_property(string path, string prop_name, RequestID id) { mapping(string:mixed)|PropertySet properties = query_property_set(path, id); if (!properties) { return Roxen.http_status(Protocols.HTTP.HTTP_NOT_FOUND, "No such file or directory."); } if (mappingp (properties)) return properties; return properties->query_property(prop_name) || Roxen.http_status(Protocols.HTTP.HTTP_NOT_FOUND, "No such property."); } //! RFC 2518 PROPFIND implementation with recursion according to //! @[depth]. See @[PropertySet()->find_properties()] for details. //! //! @seealso //! @[query_property_set()] mapping(string:mixed) recurse_find_properties(string path, string mode, int depth, RequestID id, multiset(string)|void filt) { string prefix = map(query_location()[1..]/"/", Roxen.http_encode_url)*"/"; MultiStatus.Prefixed result = id->get_multi_status()->prefix (id->url_base() + prefix); mapping(string:mixed) recurse (string path, int depth) { SIMPLE_TRACE_ENTER (this, "%s for %O, depth %d", mode == "DAV:propname" ? "Listing property names" : mode == "DAV:allprop" ? "Retrieving all properties" : mode == "DAV:prop" ? "Retrieving specific properties" : "Finding properties with mode " + mode, path, depth); mapping(string:mixed)|PropertySet properties = query_property_set(path, id); if (!properties) { SIMPLE_TRACE_LEAVE ("No such file or dir"); return 0; } { mapping(string:mixed) ret = mappingp (properties) ? properties : properties->find_properties(mode, result, filt); if (ret) { SIMPLE_TRACE_LEAVE ("Got status %d: %O", ret->error, ret->rettext); return ret; } } if (properties->get_stat()->isdir) { if (depth <= 0) { SIMPLE_TRACE_LEAVE ("Not recursing due to depth limit"); return ([]); } depth--; foreach(find_dir(path, id) || ({}), string filename) { filename = combine_path_unix(path, filename); if (mapping(string:mixed) sub_res = recurse(filename, depth)) if (sizeof (sub_res)) result->add_status (filename, sub_res->error, sub_res->rettext); } } SIMPLE_TRACE_LEAVE (""); return ([]); }; return recurse (path, depth); } mapping(string:mixed) patch_properties(string path, array(PatchPropertyCommand) instructions, RequestID id) { SIMPLE_TRACE_ENTER (this, "Patching properties for %O", path); mapping(string:mixed)|PropertySet properties = query_property_set(path, id); if (!properties) { SIMPLE_TRACE_LEAVE ("No such file or dir"); return 0; } if (mappingp (properties)) { SIMPLE_TRACE_LEAVE ("Got error %d from query_property_set: %O", properties->error, properties->rettext); return properties; } mapping(string:mixed) errcode; if (errcode = write_access(path, 0, id)) { SIMPLE_TRACE_LEAVE("Patching denied by write_access()."); return errcode; } if (errcode = properties->start()) { SIMPLE_TRACE_LEAVE ("Got error %d from PropertySet.start: %O", errcode->error, errcode->rettext); return errcode; } array(mapping(string:mixed)) results; mixed err = catch { results = instructions->execute(properties); }; if (err) { properties->unroll(); throw (err); } else { string prefix = map((query_location()[1..] + path)/"/", Roxen.http_encode_url)*"/"; MultiStatus.Prefixed result = id->get_multi_status()->prefix (id->url_base() + prefix); int any_failed; foreach(results, mapping(string:mixed) answer) { if (any_failed = (answer && (answer->error >= 300))) { break; } } if (any_failed) { // Unroll and fail any succeeded items. int i; mapping(string:mixed) answer = Roxen.http_status (Protocols.HTTP.DAV_FAILED_DEP); for(i = 0; i < sizeof(results); i++) { if (!results[i] || results[i]->error < 300) { result->add_property("", instructions[i]->property_name, answer); } else { result->add_property("", instructions[i]->property_name, results[i]); } } properties->unroll(); } else { int i; for(i = 0; i < sizeof(results); i++) { result->add_property("", instructions[i]->property_name, results[i]); } properties->commit(); } } SIMPLE_TRACE_LEAVE (""); return 0; } //! Convenience variant of @[patch_properties()] that sets a single //! property. //! //! @returns //! Returns a mapping on any error, zero otherwise. mapping(string:mixed) set_property (string path, string prop_name, string|array(Parser.XML.Tree.SimpleNode) value, RequestID id) { mapping(string:mixed)|PropertySet properties = query_property_set(path, id); if (!properties) return Roxen.http_status(Protocols.HTTP.HTTP_NOT_FOUND, "File not found."); if (mappingp (properties)) return properties; mapping(string:mixed) result = properties->start(); if (result) return result; result = properties->set_property(prop_name, value); if (result && result->error >= 300) { properties->unroll(); return result; } properties->commit(); return 0; } //! Convenience variant of @[patch_properties()] that removes a single //! property. //! //! @returns //! Returns a mapping on any error, zero otherwise. mapping(string:mixed) remove_property (string path, string prop_name, RequestID id) { mapping(string:mixed)|PropertySet properties = query_property_set(path, id); if (!properties) return Roxen.http_status(Protocols.HTTP.HTTP_NOT_FOUND, "File not found."); if (mappingp (properties)) return properties; mapping(string:mixed) result = properties->start(); if (result) return result; result = properties->remove_property(prop_name); if (result && result->error >= 300) { properties->unroll(); return result; } properties->commit(); return 0; } string resource_id (string path, RequestID|int(0..0) id) //! Return a string that within the filesystem uniquely identifies the //! resource on @[path] in the given request. This is commonly @[path] //! itself but can be extended with e.g. language, user or some form //! variable if the path is mapped to different files according to //! those fields. //! //! The important criteria here is that every unique returned string //! corresponds to a resource that can be changed independently of //! every other. Thus e.g. dynamic pages that evaluate to different //! results depending on variables or cookies etc should _not_ be //! mapped to more than one string by this function. It also means //! that if files are stored in a filesystem which is case insensitive //! then this function should normalize case differences. //! //! This function is used e.g by the default lock implementation to //! convert paths to resources that can be locked independently of //! each other. There's also a notion of recursive locks there, which //! means that a recursive lock on a certain resource identifier also //! locks every resource whose identifier it is a prefix of. Therefore //! it's typically necessary to ensure that every identifier ends with //! "/" so that a recursive lock on e.g. "doc/foo" doesn't lock //! "doc/foobar". //! //! @param path //! The requested path below the filesystem location. It has been //! normalized with @[VFS.normalize_path]. //! //! @param id //! The request id may have the value @expr{0@} (zero) if called //! by @[Configuration()->expire_locks()]. { return has_suffix (path, "/") ? path : path + "/"; } string|int authenticated_user_id (string path, RequestID id) //! Return a value that uniquely identifies the user that the given //! request is authenticated as. //! //! This function is e.g. used by the default lock implementation to //! tell different users holding locks apart. WARNING: Due to some //! design issues in the lock system, it's likely that it will change //! to not use this function in the future. //! //! @param path //! The requested path below the filesystem location. It has been //! normalized with @[VFS.normalize_path]. { // Leave this to the standard auth system by default. User uid = my_configuration()->authenticate (id); return uid && uid->name(); } // Mapping from resource id to a mapping from user id to the lock // that apply to the resource. // // Only used internally by the default lock implementation. protected mapping(string:mapping(mixed:DAVLock)) file_locks = ([]); // Mapping from resource id to a mapping from user id to the lock // that apply recursively to the resource and all other resources // it's a prefix of. // // Only used internally by the default lock implementation. protected mapping(string:mapping(mixed:DAVLock)) prefix_locks = ([]); #define LOOP_OVER_BOTH(PATH, LOCKS, CODE) \ do { \ foreach (file_locks; PATH; LOCKS) {CODE;} \ foreach (prefix_locks; PATH; LOCKS) {CODE;} \ } while (0) //! Find some or all locks that apply to @[path]. //! //! @param path //! Normalized path below the filesystem location. //! //! @param recursive //! If @expr{1@} also return locks anywhere below @[path]. //! If @expr{-1} return locks anywhere below @[path], but not //! any above @[path]. (This is appropriate to use to get the //! list of locks that need to be unlocked on DELETE.) //! //! @param exclude_shared //! If @expr{1@} do not return shared locks that are held by users //! other than the one the request is authenticated as. (This is //! appropriate to get the list of locks that would conflict if the //! current user were to make a shared lock.) //! //! @returns //! Returns a mapping containing all applicable locks in //! this location module, or @expr{0@} (zero) if there are none. //! //! @note //! @[DAVLock] objects may be created if the filesystem has some //! persistent storage of them. The default implementation does not //! store locks persistently. //! //! @note //! The default implementation only handles the @expr{"DAV:write"@} //! lock type. mapping(string:DAVLock) find_locks(string path, int(-1..1) recursive, int(0..1) exclude_shared, RequestID id) { // Common case. if (!sizeof(file_locks) && !sizeof(prefix_locks)) return 0; TRACE_ENTER(sprintf("find_locks(%O, %O, %O, X)", path, recursive, exclude_shared), this); string rsc = resource_id (path, id); mapping(string:DAVLock) locks = ([]); function(mapping(mixed:DAVLock):void) add_locks; if (exclude_shared) { mixed auth_user = authenticated_user_id (path, id); add_locks = lambda (mapping(mixed:DAVLock) sub_locks) { foreach (sub_locks; string user; DAVLock lock) if (user == auth_user || lock->lockscope == "DAV:exclusive") locks[lock->locktoken] = lock; }; } else add_locks = lambda (mapping(mixed:DAVLock) sub_locks) { locks |= mkmapping(values(sub_locks)->locktoken, values(sub_locks)); }; if (file_locks[rsc]) { add_locks (file_locks[rsc]); } if (recursive >= 0) { foreach(prefix_locks; string prefix; mapping(mixed:DAVLock) sub_locks) { if (has_prefix(rsc, prefix)) { add_locks (sub_locks); break; } } } if (recursive) { LOOP_OVER_BOTH (string prefix, mapping(mixed:DAVLock) sub_locks, { if (has_prefix(prefix, rsc)) { add_locks (sub_locks); } }); } add_locks = 0; TRACE_LEAVE(sprintf("Done, found %d locks.", sizeof(locks))); return sizeof(locks) && locks; } //! Unlock any locks pertaining to @[path] or to anything //! under @[path]. //! //! This function is used to unlock locks after files or //! directories have been deleted. //! //! The default implementation just unregisters the locks. //! //! @seealso //! @[unregister_lock()] void unlock_path(string path, RequestID id) { // Common case. if (!sizeof(file_locks) && !sizeof(prefix_locks)) return 0; TRACE_ENTER(sprintf("unlock_path(%O, %O)", path, id), this); string rsc = resource_id(path, id); foreach(file_locks; string prefix; mapping(mixed:DAVLock) sub_locks) { if (has_prefix(prefix, rsc)) { TRACE_ENTER(sprintf("Unlocking %d locks for path %O...", sizeof(sub_locks), prefix), this); m_delete(file_locks, prefix); TRACE_LEAVE(""); } } foreach(prefix_locks; string prefix; mapping(mixed:DAVLock) sub_locks) { if (has_prefix(prefix, rsc)) { TRACE_ENTER(sprintf("Unlocking %d locks for path %O...", sizeof(sub_locks), prefix), this); m_delete(prefix_locks, prefix); TRACE_LEAVE(""); } } TRACE_LEAVE("Done."); } //! Register @[lock] on the path @[path] under the assumption that //! there is no other lock already that conflicts with this one. //! //! This function is only provided as a helper to call from //! @[lock_file] if the default lock implementation is to be used. //! //! @param path //! Normalized path (below the filesystem location) that the lock //! applies to. //! //! @param lock //! The lock to register. //! //! @note //! The default implementation only handles the @expr{"DAV:write"@} //! lock type. It uses @[resource_id] to map paths to unique resources //! and @[authenticated_user_id] to tell users apart. protected void register_lock(string path, DAVLock lock, RequestID id) { TRACE_ENTER(sprintf("register_lock(%O, lock(%O), X).", path, lock->locktoken), this); ASSERT_IF_DEBUG (lock->locktype == "DAV:write"); mixed auth_user = authenticated_user_id (path, id); path = resource_id (path, id); if (lock->recursive) { if (prefix_locks[path]) { prefix_locks[path][auth_user] = lock; } else { prefix_locks[path] = ([ auth_user:lock ]); } } else { if (file_locks[path]) { file_locks[path][auth_user] = lock; } else { file_locks[path] = ([ auth_user:lock ]); } } TRACE_LEAVE("Ok."); } //! Unregister @[lock] that currently is locking the resource at //! @[path]. It's assumed that the lock is registered for exactly that //! path. //! //! This function is only provided as a helper to call from //! @[unlock_file] if the default lock implementation is to be used. //! //! @param path //! Normalized path (below the filesystem location) that the lock //! applies to. //! //! @param lock //! The lock to unregister. (It must not be changed or destructed.) //! //! @param id //! The request id may have the value @expr{0@} (zero) if called //! by @[Configuration()->expire_locks()]. protected void unregister_lock (string path, DAVLock lock, RequestID|int(0..0) id) { TRACE_ENTER(sprintf("unregister_lock(%O, lock(%O), X).", path, lock->locktoken), this); mixed auth_user = id && authenticated_user_id (path, id); path = resource_id (path, id); DAVLock removed_lock; if (lock->recursive) { if (id) { removed_lock = m_delete(prefix_locks[path], auth_user); } else { foreach(prefix_locks[path]||([]); mixed user; DAVLock l) { if (l == lock) { removed_lock = m_delete(prefix_locks[path], user); } } } if (!sizeof (prefix_locks[path])) m_delete (prefix_locks, path); } else if (file_locks[path]) { if (id) { removed_lock = m_delete (file_locks[path], auth_user); } else { foreach(file_locks[path]||([]); mixed user; DAVLock l) { if (l == lock) { removed_lock = m_delete(file_locks[path], user); } } } if (!sizeof (file_locks[path])) m_delete (file_locks, path); } // NB: The lock may have already been removed in the !id case. ASSERT_IF_DEBUG (!(id || removed_lock) || (lock /*%O*/ == removed_lock /*%O*/), lock, removed_lock); TRACE_LEAVE("Ok."); return 0; } //! Register @[lock] on the path @[path] under the assumption that //! there is no other lock already that conflicts with this one. //! //! The implementation must at least support the @expr{"DAV:write"@} //! lock type (RFC 2518, section 7). Briefly: An exclusive lock on a //! file prohibits other users from changing its content. An exclusive //! lock on a directory (aka collection) prohibits other users from //! adding or removing files or directories in it. An exclusive lock //! on a file or directory prohibits other users from setting or //! deleting any of its properties. A shared lock prohibits users //! without locks to do any of this, and it prohibits other users from //! obtaining an exclusive lock. A resource that doesn't exist can be //! locked, provided the directory it would be in exists (relaxed in //! RFC 2518Bis (working draft)). The default implementation fulfills //! these criteria. //! //! It's up to @[find_file] et al to actually check that the necessary //! locks are held. It can preferably use @[write_access] for that, //! which has a default implementation for checking //! @expr{"DAV:write"@} locks. //! //! @param path //! Normalized path (below the filesystem location) that the lock //! applies to. //! //! @param lock //! The lock to register. //! //! @returns //! Returns @expr{0@} if the lock is successfully installed or if //! locking isn't used. Returns a status mapping if an error //! occurred. //! //! @note //! To use the default lock implementation, call @[register_lock] //! from this function. mapping(string:mixed) lock_file(string path, DAVLock lock, RequestID id) { return 0; } //! Remove @[lock] that currently is locking the resource at @[path]. //! It's assumed that the lock is registered for exactly that path. //! //! @param path //! Normalized path (below the filesystem location) that the lock //! applies to. //! //! @param lock //! The lock to unregister. (It must not be changed or destructed.) //! //! @param id //! @mixed //! @type RequestID //! The request that attempted to unlock the lock. The function //! should do the normal access checks before unlocking the lock //! in this case. //! //! @type int(0..0) //! The lock is unlocked internally by the server (typically due //! to a timeout) and should be carried out without any access //! checks. The function must succeed and return zero in this //! case. //! @endmixed //! //! @returns //! Returns a status mapping on any error, zero otherwise. //! //! @note //! To use the default lock implementation, call @[unregister_lock] //! from this function. mapping(string:mixed) unlock_file (string path, DAVLock lock, RequestID|int(0..0) id); //! Used by some default implementations to check if we may perform a //! write access to @[path]. It should at least call //! @[Configuration::check_locks()] to check DAV locks. It takes the //! same arguments and has the same return value as that function. //! //! WARNING: This function has some design issues and will very likely //! get a different interface. Compatibility is NOT guaranteed. //! //! A filesystem module should typically put all needed write access //! checks here and then use this from @[find_file()], //! @[delete_file()] etc. //! //! @returns //! Returns @expr{0@} (zero) on success, a status mapping on //! failure, or @expr{1@} if @[recursive] is set and write access is //! allowed on this level but maybe not somewhere below. The caller //! should in the last case do the operation on this level if //! possible and then handle each member in the directory //! recursively with @[write_access] etc. protected mapping(string:mixed)|int(0..1) write_access(string relative_path, int(0..1) recursive, RequestID id) { string path = query_location() + relative_path; return id->conf->check_locks(path, recursive, id); } //! protected variant mapping(string:mixed)|int(0..1) write_access(array(string) paths, int(0..1) recursive, RequestID id) { mapping(string:mixed)|int(0..1) ret; foreach(paths, string path) { ret = write_access(path, recursive, id); if (mappingp(ret)) { return ret; } } // None of the paths are locked. return 0; } mapping(string:mixed)|int(-1..0)|Stdio.File find_file(string path, RequestID id); //! Used by the default @[recurse_delete_files] implementation to //! delete a file or an empty directory. //! //! @returns //! Returns a 2xx series status mapping on success (typically 204 No //! Content). Returns 0 if the file doesn't exist. Returns an //! appropriate status mapping for any other error. //! //! @note //! The default implementation falls back to @[find_file()]. protected mapping(string:mixed) delete_file(string path, RequestID id) { // Fall back to find_file(). RequestID tmp_id = id->clone_me(); tmp_id->not_query = query_location() + path; tmp_id->method = "DELETE"; // FIXME: Logging? return find_file(path, tmp_id) || tmp_id->misc->error_code && Roxen.http_status (tmp_id->misc->error_code); } //! Delete @[path] recursively. //! //! The default implementation handles the recursion and calls //! @[delete_file] for each file and empty directory. //! //! @returns //! Returns a 2xx series status mapping on success (typically 204 No //! Content). Returns 0 if the file doesn't exist. Returns an //! appropriate status mapping for any other error. That includes an //! empty mapping in case some subparts couldn't be deleted, to //! signify a 207 Multi-Status response using the info in //! @[id->get_multi_status()]. mapping(string:mixed) recurse_delete_files(string path, RequestID id, void|MultiStatus.Prefixed stat) { SIMPLE_TRACE_ENTER (this, "Deleting %O recursively", path); if (!stat) stat = id->get_multi_status()->prefix (id->url_base() + query_location()[1..]); Stat st = stat_file(path, id); if (!st) { SIMPLE_TRACE_LEAVE ("No such file or directory"); return 0; } mapping(string:mixed) ret = write_access(path, 1, id); if (ret) { SIMPLE_TRACE_LEAVE("Write access denied: %O", ret); return ret; } mapping(string:mixed) recurse (string path, Stat st) { // Note: Already got an extra TRACE_ENTER level on entry here. if (st->isdir) { // RFC 2518 8.6.2 // The DELETE operation on a collection MUST act as if a // "Depth: infinity" header was used on it. int fail; if (!has_suffix(path, "/")) path += "/"; foreach(find_dir(path, id) || ({}), string fname) { fname = path + fname; if (Stat sub_stat = stat_file (fname, id)) { SIMPLE_TRACE_ENTER (this, "Deleting %O", fname); if (mapping(string:mixed) sub_res = recurse(fname, sub_stat)) { // RFC 2518 8.6.2 // Additionally 204 (No Content) errors SHOULD NOT be returned // in the 207 (Multi-Status). The reason for this prohibition // is that 204 (No Content) is the default success code. if (sizeof (sub_res) && sub_res->error != 204) { stat->add_status(fname, sub_res); } if (!sizeof (sub_res) || sub_res->error >= 300) fail = 1; } } } if (fail) { SIMPLE_TRACE_LEAVE ("Partial failure"); return ([]); } } SIMPLE_TRACE_LEAVE (""); return delete_file (path, id); }; return recurse(path, st) || Roxen.http_status(204); } //! Make a new collection (aka directory) at @[path]. //! //! @returns //! Returns a 2xx series status on success (typically 201 Created). //! Returns @expr{0@} (zero) if there's no directory to create the //! new one in. Returns other result mappings on failure. mapping(string:mixed) make_collection(string path, RequestID id) { // Fall back to find_file(). RequestID tmp_id = id->clone_me(); tmp_id->not_query = query_location() + path; tmp_id->method = "MKCOL"; // FIXME: Logging? return find_file(path, tmp_id); } //! Used by the default @[copy_collection] implementation to copy all //! properties at @[source] to @[destination]. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to copy properties. See the @[PropertyBehavior] //! type for details. //! //! @returns //! @expr{0@} (zero) on success or an appropriate status mapping for //! any error. protected mapping(string:mixed) copy_properties( string source, string destination, PropertyBehavior behavior, RequestID id) { SIMPLE_TRACE_ENTER(this, "copy_properties(%O, %O, %O, %O)", source, destination, behavior, id); PropertySet source_properties = query_property_set(source, id); PropertySet destination_properties = query_property_set(destination, id); multiset(string) property_set = source_properties->query_all_properties(); mapping(string:mixed) res; foreach(property_set; string property_name;) { SIMPLE_TRACE_ENTER(this, "Copying the property %O.", property_name); string|array(Parser.XML.Tree.SimpleNode)|mapping(string:mixed) source_val = source_properties->query_property(property_name); if (mappingp(source_val)) { TRACE_LEAVE("Reading of property failed. Skipped."); continue; } string|array(Parser.XML.Tree.SimpleNode)|mapping(string:mixed) dest_val = destination_properties->query_property(property_name); if (dest_val == source_val) { TRACE_LEAVE("Destination already has the correct value."); continue; } mapping(string:mixed) subres = destination_properties->set_property(property_name, source_val); if (!behavior) { TRACE_LEAVE("Omit verify."); continue; } if ((intp(behavior) || behavior[property_name]) && (subres->error < 300)) { // FIXME: Check that if the property was live in source, // it is still live in destination. // This is likely already so, since we're in the same module. } if ((subres->error < 300) || (subres->error == Protocols.HTTP.HTTP_CONFLICT)) { // Ok, or read-only property. TRACE_LEAVE("Copy ok or read-only property."); continue; } if (!subres) { // Copy failed, but attempt to copy the rest. res = Roxen.http_status(Protocols.HTTP.HTTP_PRECOND_FAILED); } TRACE_LEAVE("Copy failed."); } TRACE_LEAVE(res?"Failed.":"Ok."); return res; } //! Used by the default @[recurse_copy_files] and @[move_collection] //! to copy a collection (aka directory) and its properties but not //! its contents. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to copy properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @param result //! A @[MultiStatus.Prefixed] to collect status mappings if some //! subparts fail. It's prefixed with the URL to the filesystem //! location. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. That //! includes an empty mapping in case there's a failure on some //! subpart or at the destination, to signify a 207 Multi-Status //! response using the info in @[id->get_multi_status()]. protected mapping(string:mixed) copy_collection( string source, string destination, PropertyBehavior behavior, Overwrite overwrite, MultiStatus.Prefixed result, RequestID id) { SIMPLE_TRACE_ENTER(this, "copy_collection(%O, %O, %O, %O, %O, %O).", source, destination, behavior, overwrite, result, id); Stat st = stat_file(destination, id); if (st) { // Destination exists. Check the overwrite header. switch(overwrite) { case DO_OVERWRITE: // RFC 2518 8.8.4 // If a resource exists at the destination, and the Overwrite // header is "T" then prior to performing the copy the server // MUST perform a DELETE with "Depth: infinity" on the // destination resource. TRACE_ENTER("Destination exists and overwrite is on.", this); mapping(string:mixed) res = recurse_delete_files(destination, id, result); if (res && (!sizeof (res) || res->error >= 300)) { // Failed to delete something. TRACE_LEAVE("Deletion failed."); TRACE_LEAVE("Copy collection failed."); // RFC 2518 9.6 says: // // If a COPY or MOVE is not performed due to the value of // the Overwrite header, the method MUST fail with a 412 // (Precondition Failed) status code. // // That can perhaps be interpreted as that we should return // 412 here. But otoh, in RFC 2518 8.8.5 COPY status codes: // // 412 (Precondition Failed) - /.../ the Overwrite header // is "F" and the state of the destination resource is // non-null. // // That clearly doesn't include this case. Also, common sense // says that the error from the failed delete is more useful // to the client. #if 0 return Roxen.http_status(Protocols.HTTP.HTTP_PRECOND_FAILED); #elif 0 if (sizeof (res)) { // RFC 2518 8.8.3: // If an error in executing the COPY method occurs with a // resource other than the resource identified in the // Request-URI then the response MUST be a 207 // (Multi-Status). // // So if the failure was on the root destination resource we // have to convert it to a multi-status. result->add_status (destination, res->error, res->rettext); } return ([]); #else // RFC 4918 9.8.5: // 423 (Locked) - The destination resource, or resource // within the destination collection, was locked. This // response SHOULD contain the 'lock-token-submitted' // precondition element. return res; #endif } TRACE_LEAVE("Deletion ok."); break; case NEVER_OVERWRITE: TRACE_LEAVE("Destination already exists."); return Roxen.http_status(Protocols.HTTP.HTTP_PRECOND_FAILED); case MAYBE_OVERWRITE: // No overwrite header. // Be nice, and fail only if we don't already have a collection. if (st->isdir) { TRACE_LEAVE("Destination exists and is a directory."); return copy_properties(source, destination, behavior, id); } TRACE_LEAVE("Destination exists and is not a directory."); return Roxen.http_status(Protocols.HTTP.HTTP_CONFLICT); } } // Create the new collection. TRACE_LEAVE("Make a new collection."); mapping(string:mixed) res = make_collection(destination, id); if (res && res->error >= 300) return res; res = copy_properties(source, destination, behavior, id) || res; if (res && st && (res->error == Protocols.HTTP.HTTP_CREATED)) { // RFC 4918 9.8.5: // 204 (No Content) - The source resource was successfully // copied to a preexisting destination resource. res->error = Protocols.HTTP.HTTP_NO_CONTENT; } return res; } //! Used by the default @[recurse_copy_files] to copy a single file //! along with its properties. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to copy properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. protected mapping(string:mixed) copy_file(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id) { SIMPLE_TRACE_ENTER(this, "copy_file(%O, %O, %O, %O, %O)\n", source, destination, behavior, overwrite, id); TRACE_LEAVE("Not implemented."); return Roxen.http_status (Protocols.HTTP.HTTP_NOT_IMPL); } //! Copy a resource recursively from @[source] to @[destination]. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to copy properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @param one_level //! Indicates whether recursion is to be inhibited. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. That //! includes an empty mapping in case there's a failure on some //! subpart or at the destination, to signify a 207 Multi-Status //! response using the info in @[id->get_multi_status()]. mapping(string:mixed) recurse_copy_files(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id, int|void one_level) { SIMPLE_TRACE_ENTER(this, "Recursive copy from %O to %O (%s)", source, destination, overwrite == DO_OVERWRITE ? "replace" : overwrite == NEVER_OVERWRITE ? "no overwrite" : "overlay"); string src_tmp = has_suffix(source, "/")?source:(source+"/"); string dst_tmp = has_suffix(destination, "/")?destination:(destination+"/"); if ((src_tmp == dst_tmp) || has_prefix(src_tmp, dst_tmp) || has_prefix(dst_tmp, src_tmp)) { TRACE_LEAVE("Source and destination overlap."); return Roxen.http_status(403, "Source and destination overlap."); } string prefix = map(query_location()[1..]/"/", Roxen.http_encode_url)*"/"; MultiStatus.Prefixed result = id->get_multi_status()->prefix (id->url_base() + prefix); mapping(string:mixed) recurse(string source, string destination, int|void one_level) { // Note: Already got an extra TRACE_ENTER level on entry here. Stat st = stat_file(source, id); if (!st) { TRACE_LEAVE("Source not found."); return 0; } // NB: No need to check the destination here, as it is done by // copy_collection() and copy_file(). if (st->isdir) { mapping(string:mixed) res = copy_collection(source, destination, behavior, overwrite, result, id); if (res && (!sizeof (res) || res->error >= 300)) { // RFC 2518 8.8.3 and 8.8.8 (error minimization). TRACE_LEAVE("Copy of collection failed."); return res; } if (!one_level) { foreach(find_dir(source, id), string filename) { string subsrc = combine_path_unix(source, filename); string subdst = combine_path_unix(destination, filename); SIMPLE_TRACE_ENTER(this, "Copy from %O to %O\n", subsrc, subdst); mapping(string:mixed) sub_res = recurse(subsrc, subdst); if (sub_res && !(<0, 201, 204>)[sub_res->error]) { result->add_status(subdst, sub_res->error, sub_res->rettext); } } } TRACE_LEAVE(""); return res; } else { TRACE_LEAVE(""); return copy_file(source, destination, behavior, overwrite, id); } }; int start_ms_size = id->multi_status_size(); mapping(string:mixed) res = recurse (source, destination, one_level); if (res && res->error != 204 && res->error != 201) return res; else if (id->multi_status_size() != start_ms_size) return ([]); else return res; } //! Used by the default @[recurse_move_files] to move a file (and not //! a directory) from @[source] to @[destination]. //! //! The default implementation tries to call @[find_file] with the //! MOVE method. If that returns 501 Not Implemented then it copies //! the file and deletes the source afterwards. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to move properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. That //! includes an empty mapping in case there's a failure on some //! subpart or at the destination, to signify a 207 Multi-Status //! response using the info in @[id->get_multi_status()]. protected mapping(string:mixed) move_file(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id) { // Fall back to find_file(). RequestID tmp_id = id->clone_me(); tmp_id->not_query = query_location() + source; tmp_id->misc["new-uri"] = query_location() + destination; tmp_id->request_headers->destination = id->url_base() + query_location()[1..] + destination; tmp_id->method = "MOVE"; mapping(string:mixed) res = find_file(source, tmp_id); if (!res || res->error != 501) return res; // Not implemented. Fall back to COPY + DELETE. res = copy_file(source, destination, behavior, overwrite, id); if (res && res->error >= 300) { // Copy failed. return res; } return delete_file(source, id); } //! Used by the default @[recurse_move_files] to move a collection //! (aka directory) and all its content from @[source] to //! @[destination]. //! //! The default implementation tries to call @[find_file] with the //! MOVE method. If that returns 501 Not Implemented then it copies //! the collection, moves each directory entry recursively, and //! deletes the source collection afterwards. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to move properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. That //! includes an empty mapping in case there's a failure on some //! subpart or at the destination, to signify a 207 Multi-Status //! response using the info in @[id->get_multi_status()]. //! //! @note //! The function must be prepared to recurse to check DAV locks //! properly. protected mapping(string:mixed) move_collection( string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id) { // Fall back to find_file(). RequestID tmp_id = id->clone_me(); tmp_id->not_query = query_location() + source; tmp_id->misc["new-uri"] = query_location() + destination; tmp_id->request_headers->destination = id->url_base() + query_location()[1..] + destination; tmp_id->method = "MOVE"; mapping(string:mixed) res = find_file(source, tmp_id); if (!res || res->error != 501) { if (res && !sizeof(res)) { foreach(tmp_id->get_multi_status()->get_responses_by_prefix(""); string href; MultiStatusNode status) { id->set_status_for_url(href, status); } } return res; } // Not implemented. Fall back to COPY + DELETE. string prefix = map(query_location()[1..]/"/", Roxen.http_encode_url)*"/"; MultiStatus.Prefixed result = id->get_multi_status()->prefix (id->url_base() + prefix); res = copy_collection(source, destination, behavior, overwrite, result, id); if (res && (res->error >= 300 || !sizeof(res))) { // Copy failed. return res; } int fail; foreach(find_dir(source, id), string filename) { string subsrc = combine_path_unix(source, filename); string subdst = combine_path_unix(destination, filename); SIMPLE_TRACE_ENTER(this, "Recursive move from %O to %O\n", subsrc, subdst); if (mapping(string:mixed) sub_res = recurse_move_files(subsrc, subdst, behavior, overwrite, id)) { if (!(<0, 201, 204>)[sub_res->error]) { result->add_status(subdst, sub_res->error, sub_res->rettext); } if (!sizeof (sub_res) || sub_res->error >= 300) { // Failed to move some content. fail = 1; } } } if (fail) return ([]); return delete_file(source, id); } //! Move a resource from @[source] to @[destination]. //! //! @param source //! Source path below the filesystem location. //! //! @param destination //! Destination path below the filesystem location. //! //! @param behavior //! Specifies how to move properties. See the @[PropertyBehavior] //! type for details. //! //! @param overwrite //! Specifies how to handle the situation if the destination already //! exists. See the @[Overwrite] type for details. //! //! @returns //! Returns a 2xx series status mapping on success (typically 201 //! Created if the destination didn't exist before, or 204 No //! Content otherwise). Returns 0 if the source doesn't exist. //! Returns an appropriate status mapping for any other error. That //! includes an empty mapping in case there's a failure on some //! subpart or at the destination, to signify a 207 Multi-Status //! response using the info in @[id->get_multi_status()]. mapping(string:mixed) recurse_move_files(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id) { Stat st = stat_file(source, id); if (!st) return 0; if (st->isdir) { return move_collection(source, destination, behavior, overwrite, id); } return move_file(source, destination, behavior, overwrite, id); } string real_file(string f, RequestID id){} void add_api_function( string name, function f, void|array(string) types) { _api_functions[name] = ({ f, types }); } mapping api_functions() { return _api_functions; } #if ROXEN_COMPAT <= 1.4 mapping(string:function) query_tag_callers() //! Compat { mapping(string:function) m = ([]); foreach(glob("tag_*", indices( this_object())), string q) if(functionp( this_object()[q] )) m[replace(q[4..], "_", "-")] = this_object()[q]; return m; } mapping(string:function) query_container_callers() //! Compat { mapping(string:function) m = ([]); foreach(glob("container_*", indices( this_object())), string q) if(functionp( this_object()[q] )) m[replace(q[10..], "_", "-")] = this_object()[q]; return m; } #endif mapping(string:array(int|function)) query_simpletag_callers() { mapping(string:array(int|function)) m = ([]); foreach(glob("simpletag_*", indices(this_object())), string q) if(functionp(this_object()[q])) m[replace(q[10..],"_","-")] = ({ intp (this_object()[q + "_flags"]) && this_object()[q + "_flags"], this_object()[q] }); return m; } mapping(string:array(int|function)) query_simple_pi_tag_callers() { mapping(string:array(int|function)) m = ([]); foreach (glob ("simple_pi_tag_*", indices (this_object())), string q) if (functionp (this_object()[q])) m[replace (q[sizeof ("simple_pi_tag_")..], "_", "-")] = ({(intp (this_object()[q + "_flags"]) && this_object()[q + "_flags"]) | RXML.FLAG_PROC_INSTR, this_object()[q]}); return m; } RXML.TagSet query_tag_set() { if (!module_tag_set) { array(function|program|object) tags = filter (rows (this_object(), glob ("Tag*", indices (this_object()))), lambda(mixed x) { return functionp(x)||programp(x); }); for (int i = 0; i < sizeof (tags); i++) if (programp (tags[i])) if (!tags[i]->is_RXML_Tag) tags[i] = 0; else tags[i] = tags[i](); else { tags[i] = tags[i](); // Bogosity: The check is really a little too late here.. if (!tags[i]->is_RXML_Tag) tags[i] = 0; } tags -= ({0}); module_tag_set = (this_object()->ModuleTagSet || RXML.TagSet) (this_object(), "", tags); } return module_tag_set; } mixed get_value_from_file(string path, string index, void|string pre) { Stdio.File file=Stdio.File(); if(!file->open(path,"r")) return 0; if(has_suffix(index, "()")) index = index[..sizeof(index) - 3]; // Pass path to original file so that include statements for local files // work correctly. return compile_string((pre || "") + file->read(), path)[index]; } #if constant(roxen.FSGarbWrapper) //! Register a filesystem path for automatic garbage collection. //! //! @param path //! Path in the real filesystem to garbage collect. //! //! @param max_age //! Maximum allowed age in seconds for files. //! //! @param max_size //! Maximum total size in bytes for all files under the path. //! Zero to disable the limit. //! //! @param max_files //! Maximum number of files under the path. //! Zero to disable the limit. //! //! @returns //! Returns a roxen.FSGarbWrapper object. The garbage collector //! will be removed when this object is destructed (eg via //! refcount-garb). roxen.FSGarbWrapper register_fsgarb(string path, int max_age, int|void max_size, int|void max_files, string|void quarantine) { return roxen.register_fsgarb(module_identifier(), path, max_age, max_size, max_files, quarantine); } #endif private mapping __my_tables = ([]); array(mapping(string:mixed)) sql_query( string query, mixed ... args ) //! Do a SQL-query using @[get_my_sql], the table names in the query //! should be written as &table; instead of table. As an example, if //! the tables 'meta' and 'data' have been created with create_tables //! or get_my_table, this query will work: //! //! SELECT &meta;.id AS id, &data;.data as DATA //! FROM &data;, &meta; WHERE &my.meta;.xsize=200 //! { return get_my_sql()->query( replace( query, __my_tables ), @args ); } object sql_big_query( string query, mixed ... args ) //! Identical to @[sql_query], but the @[Sql.Sql()->big_query] method //! will be used instead of the @[Sql.Sql()->query] method. { return get_my_sql()->big_query( replace( query, __my_tables ), @args ); } array(mapping(string:mixed)) sql_query_ro( string query, mixed ... args ) //! Do a read-only SQL-query using @[get_my_sql], the table names in the query //! should be written as &table; instead of table. As an example, if //! the tables 'meta' and 'data' have been created with create_tables //! or get_my_table, this query will work: //! //! SELECT &meta;.id AS id, &data;.data as DATA //! FROM &data;, &meta; WHERE &my.meta;.xsize=200 //! { return get_my_sql(1)->query( replace( query, __my_tables ), @args ); } object sql_big_query_ro( string query, mixed ... args ) //! Identical to @[sql_query_ro], but the @[Sql.Sql()->big_query] method //! will be used instead of the @[Sql.Sql()->query] method. { return get_my_sql(1)->big_query( replace( query, __my_tables ), @args ); } protected int create_sql_tables( mapping(string:array(string)) definitions, string|void comment, int|void no_unique_names ) //! Create multiple tables in one go. See @[get_my_table] //! Returns the number of tables that were actually created. { int ddc; if( !no_unique_names ) foreach( indices( definitions ), string t ) ddc+=get_my_table( t, definitions[t], comment, 1 ); else { Sql.Sql sql = get_my_sql(); foreach( indices( definitions ), string t ) { if( !catch { sql->query("CREATE TABLE "+t+" ("+definitions[t]*","+")" ); } ) ddc++; DBManager.is_module_table( this_object(), my_db, t, comment ); } } return ddc; } protected string sql_table_exists( string name ) //! Return the real name of the table 'name' if it exists. { if(strlen(name)) name = "_"+name; string res = hash(_my_configuration->name)->digits(36) + "_" + replace(sname(), ({ "#","-" }), ({ "_","_" })) + name; return catch(get_my_sql()->query( "SELECT * FROM "+res+" LIMIT 1" ))?0:res; } protected string|int get_my_table( string|array(string) name, void|array(string)|string definition, string|void comment, int|void flag ) //! @decl string get_my_table( string name, array(string) types ) //! @decl string get_my_table( string name, string definition ) //! @decl string get_my_table( string definition ) //! @decl string get_my_table( array(string) definition ) //! //! Returns the name of a table in the 'shared' database that is //! unique for this module. It is possible to select another database //! by using @[set_my_db] before calling this function. //! //! You can use @[create_sql_tables] instead of this function if you want //! to create more than one table in one go. //! //! If @[flag] is true, return 1 if a table was created, and 0 otherwise. //! //! In the first form, @[name] is the (postfix of) the name of the //! table, and @[types] is an array of definitions, as an example: //! //! //! @code //! cache_table = get_my_table( "cache", ({ //! "id INT UNSIGNED AUTO_INCREMENT", //! "data BLOB", //! }) ); //! @endcode //! //! In the second form, the whole table definition is instead sent as //! a string. The cases where the name is not included (the third and //! fourth form) is equivalent to the first two cases with the name "" //! //! If the table does not exist in the datbase, it is created. //! //! @note //! This function may not be called from create // // If it exists, but it's definition is different, the table will be // altered with a ALTER TABLE call to conform to the definition. This // might not work if the database the table resides in is not a MySQL // database (normally it is, but it's possible, using @[set_my_db], // to change this). { string oname; int ddc; if( !definition ) { definition = name; oname = name = ""; } else if(strlen(name)) name = "_"+(oname = name); Sql.Sql sql = get_my_sql(); string res = hash(_my_configuration->name)->digits(36) + "_" + replace(sname(),({ "#","-" }), ({ "_","_" })) + name; if( !sql ) { report_error("Failed to get SQL handle, permission denied for "+my_db+"\n"); return 0; } if( arrayp( definition ) ) definition *= ", "; if( catch(sql->query( "SELECT * FROM "+res+" LIMIT 1" )) ) { ddc++; mixed error = catch { get_my_sql()->query( "CREATE TABLE "+res+" ("+definition+")" ); DBManager.is_module_table( this_object(), my_db, res, oname+"\0"+comment ); }; if( error ) { if( strlen( name ) ) name = " "+name; report_error( "Failed to create table"+name+": "+ describe_error( error ) ); return 0; } if( flag ) { __my_tables[ "&"+oname+";" ] = res; return ddc; } return __my_tables[ "&"+oname+";" ] = res; } // // Update definition if it has changed. // mixed error = // catch // { // get_my_sql()->query( "ALTER TABLE "+res+" ("+definition+")" ); // }; // if( error ) // { // if( strlen( name ) ) // name = " for "+name; // report_notice( "Failed to update table definition"+name+": "+ // describe_error( error ) ); // } if( flag ) { __my_tables[ "&"+oname+";" ] = res; return ddc; } return __my_tables[ "&"+oname+";" ] = res; } protected string my_db = "local"; protected void set_my_db( string to ) //! Select the database in which tables will be created with //! get_my_table, and also the one that will be returned by //! @[get_my_sql] { my_db = to; } Sql.Sql get_my_sql( int|void read_only, void|string charset ) //! Return a SQL-object for the database set with @[set_my_db], //! defaulting to the 'shared' database. If @[read_only] is specified, //! the database will be opened in read_only mode. @[charset] may be //! used to specify a charset for the connection if the database //! supports it. //! //! See also @[DBManager.get] { return DBManager.cached_get( my_db, _my_configuration, read_only, charset ); } // Callback used by the DB browser, if defined, for custom formatting // of database fields. int|string format_db_browser_value (string db_name, string table_name, string column_name, array(string) col_names, array(string) col_types, array(string) row, RequestID id);

Roxen.git/ server/ base_server/ module.pike > 23bf7fdfba0bf09a65adc6e986dad8da20eff4b2 [Annotate]