Roxen.git/server/base_server/prototypes.pike:9694ab016ea025e80b5790edf863bbf5d25ccc38

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Set to the Roxen module object by // roxenloader.pike. object Roxen; // Externally visible identifiers in this file that shouldn't be added // as global constants by roxenloader.pike. constant ignore_identifiers = (< "cvs_version", "Roxen", "ignore_identifiers" >); protected class Variable { constant is_variable = 1; constant type = "Basic"; string get_warnings(); int get_flags(); void set_flags( int flags ); int check_visibility( RequestID id, int more_mode, int expert_mode, int devel_mode, int initial, int|void variable_in_cfif ); void set_invisibility_check_callback( function(RequestID,Variable:int) cb ); function(Variable:void) get_changed_callback( ); void set_changed_callback( function(Variable:void) cb ); void add_changed_callback( function(Variable:void) cb ); function(RequestID,Variable:int) get_invisibility_check_callback() ; string doc( ); string name( ); string type_hint( ); mixed default_value(); void set_warning( string to ); int set( mixed to ); int low_set( mixed to ); mixed query(); int is_defaulted(); array(string|mixed) verify_set( mixed new_value ); mapping(string:string) get_form_vars( RequestID id ); mixed transform_from_form( string what ); void set_from_form( RequestID id ); string path(); void set_path( string to ); string render_form( RequestID id, void|mapping additional_args ); string render_view( RequestID id ); } class BasicDefvar { mapping(string:Variable) variables=([]); Variable getvar( string name ); int deflocaledoc( string locale, string variable, string name, string doc, mapping|void translate ); void set(string var, mixed value); int killvar(string var); void setvars( mapping (string:mixed) vars ); Variable defvar(string var, mixed value, mapping|string|void|object name, int|void type, mapping|string|void|object doc_str, mixed|void misc, int|function|void not_in_config, mapping|void option_translations); mixed query(string|void var, int|void ok); void definvisvar(string name, mixed value, int type, array|void misc); } class StringFile( string data, mixed|void _st ) { int offset; string _sprintf() { return "StringFile("+strlen(data)+","+offset+")"; } string read(int nbytes) { if(!nbytes) { offset = strlen(data); return data; } string d = data[offset..offset+nbytes-1]; offset += strlen(d); return d; } array stat() { if( _st ) return (array)_st; return ({ 0, strlen(data), time(), time(), time(), 0, 0, 0 }); } void write(mixed ... args) { throw( ({ "File not open for write\n", backtrace() }) ); } void seek(int to) { offset = to; } void set_blocking() { } } class ModuleInfo { string sname; string filename; int last_checked; int type, multiple_copies; array(string) locked; mapping(Configuration:int) config_locked; string get_name(); string get_description(); RoxenModule instance( object conf, void|int silent ); void save(); void update_with( RoxenModule mod, string what ); // NOTE: Throws strings. int init_module( string what ); int find_module( string sn ); int check (void|int force); } class ModuleCopies { mapping copies = ([]); mixed `[](mixed q ) { return copies[q]; } mixed `[]=(mixed q,mixed w ) { return copies[q]=w; } array _indices() { return indices(copies); } array _values() { return values(copies); } string _sprintf( ) { return "ModuleCopies("+sizeof(copies)+")"; } } // Simulate an import of useful stuff from Parser.XML.Tree. protected constant SimpleNode = Parser.XML.Tree.SimpleNode; protected constant SimpleRootNode = Parser.XML.Tree.SimpleRootNode; protected constant SimpleHeaderNode = Parser.XML.Tree.SimpleHeaderNode; protected constant SimpleTextNode = Parser.XML.Tree.SimpleTextNode; protected constant SimpleElementNode = Parser.XML.Tree.SimpleElementNode; //! @appears DAVLock //! //! Container for information about an outstanding DAV lock. No field //! except @[owner] may change after the object has been created since //! filesystem modules might store this info persistently. //! //! @note //! @[DAVLock] objects might be shared between filesystems but not //! between configurations. class DAVLock { string locktoken; //! The lock token given to the client. It may be zero in case there //! only is knowledge that a lock exists but the lock instance has //! been forgotten. This can happen in a filesystem that has some //! way of recording locks but doesn't store the DAV lock tokens. string path; //! Canonical absolute path to the locked resource. Always ends with //! a @expr{"/"@}. int(0..1) recursive; //! @expr{1@} if the lock applies to all resources under @[path], //! @expr{0@} if it applies to @[path] only. string|SimpleNode lockscope; //! The lock scope (RFC 2518 12.7). As a special case, if it only is //! an empty element without attributes then the element name is //! stored as a string. //! //! @note //! RFC 2518 specifies the lock scopes @expr{"DAV:exclusive"@} and //! @expr{"DAV:shared"@}. string|SimpleNode locktype; //! The lock type (RFC 2518 12.8). As a special case, if it only is //! an empty element without attributes then the element name is //! stored as a string. //! //! @note //! RFC 2518 only specifies the lock type @expr{"DAV:write"@}. int(0..) expiry_delta; //! Idle time before this lock expires. //! //! As a special case, if the value is @expr{0@} (zero), the lock //! has infinite duration. array(SimpleNode) owner; //! The owner identification (RFC 2518 12.10), or zero if unknown. //! More precisely, it's the children of the @expr{"DAV:owner"@} //! element. //! //! @[RoxenModule.lock_file] may set this if it's zero, otherwise //! it shouldn't change. int(0..) expiry_time; //! Absolute time when this lock expires. //! //! As a special case, if the value is @expr{0@} (zero), the lock //! has infinite duration. protected void create(string locktoken, string path, int(0..1) recursive, string|SimpleNode lockscope, string|SimpleNode locktype, int(0..) expiry_delta, array(SimpleNode) owner) { DAVLock::locktoken = locktoken; DAVLock::path = path; DAVLock::recursive = recursive; DAVLock::lockscope = lockscope; DAVLock::locktype = locktype; DAVLock::expiry_delta = expiry_delta; DAVLock::owner = owner; if (expiry_delta) { if (expiry_delta < 0) error("Negative expiry delta!\n"); expiry_time = time() + expiry_delta; } } //! Returns a DAV:activelock @[Parser.XML.Tree.SimpleNode] structure //! describing the lock. SimpleNode get_xml() { SimpleElementNode res = SimpleElementNode("DAV:activelock", ([]))-> add_child(SimpleElementNode("DAV:locktype", ([]))-> add_child(stringp(locktype)? SimpleElementNode(locktype, ([])):locktype))-> add_child(SimpleElementNode("DAV:lockscope", ([]))-> add_child(stringp(lockscope)? SimpleElementNode(lockscope, ([])):lockscope))-> add_child(SimpleElementNode("DAV:depth", ([]))-> add_child(recursive? SimpleTextNode("Infinity"):SimpleTextNode("0"))); if (owner) { SimpleElementNode node; res->add_child(node = SimpleElementNode("DAV:owner", ([]))); node->replace_children(owner); } if (expiry_delta) { res->add_child(SimpleElementNode("DAV:timeout", ([]))-> add_child(SimpleTextNode(sprintf("Second-%d", expiry_delta)))); } else { res->add_child(SimpleElementNode("DAV:timeout", ([]))-> add_child(SimpleTextNode("Infinite"))); } res->add_child(SimpleElementNode("DAV:locktoken", ([]))-> add_child(SimpleElementNode("DAV:href", ([]))-> add_child(SimpleTextNode(locktoken)))); return res; } protected string _sprintf (int flag) { return flag == 'O' && sprintf ("DAVLock(%O on %O, %s, %s%s)", locktoken, path, recursive ? "rec" : "norec", lockscope == "DAV:exclusive" ? "excl" : lockscope == "DAV:shared" ? "shared" : sprintf ("%O", lockscope), locktype == "DAV:write" ? "" : sprintf (", %O", locktype)); } } //! @appears Configuration //! Configuration information for a site. //! @seealso //! @[configuration] class Configuration { inherit BasicDefvar; constant is_configuration = 1; mapping enabled_modules = ([]); mapping(string:array(int)) error_log=([]); #ifdef PROFILE mapping(string:array(int)) profile_map = ([]); #endif class Priority { string _sprintf() { return "Priority()"; } array (RoxenModule) url_modules = ({ }); array (RoxenModule) logger_modules = ({ }); array (RoxenModule) location_modules = ({ }); array (RoxenModule) filter_modules = ({ }); array (RoxenModule) last_modules = ({ }); array (RoxenModule) first_modules = ({ }); mapping (string:array(RoxenModule)) file_extension_modules = ([ ]); mapping (RoxenModule:multiset(string)) provider_modules = ([ ]); } class DataCache { int current_size, max_size, max_file_size; int hits, misses; void flush(); void expire_entry(string url, RequestID id); void set(string url, string data, mapping meta, int expire, RequestID id); array(string|mapping(string:mixed)) get(string url, RequestID id); void init_from_variables( ); }; array(Priority) allocate_pris(); object throttler; RoxenModule types_module; RoxenModule dir_module; function types_fun; string name; int inited; // Protocol specific statistics. int requests, sent, hsent, received; function(string:int) log_function; DataCache datacache; int get_config_id(); string get_doc_for( string region, string variable ); string query_internal_location(RoxenModule|void mod); string query_name(); string comment(); void unregister_urls(); void stop(void|int asynch); string|array(string) type_from_filename( string file, int|void to, string|void myext ); string get_url(); array (RoxenModule) get_providers(string provides); RoxenModule get_provider(string provides); array(mixed) map_providers(string provides, string fun, mixed ... args); mixed call_provider(string provides, string fun, mixed ... args); array(function) file_extension_modules(string ext); array(function) url_modules(); mapping api_functions(void|RequestID id); array(function) logger_modules(); array(function) last_modules(); array(function) first_modules(); array location_modules(); array(function) filter_modules(); void init_log_file(); int|mapping check_security(function|object a, RequestID id, void|int slevel); void invalidate_cache(); void clear_memory_caches(); string examine_return_mapping(mapping m); multiset(DAVLock) find_locks(string path, int(0..1) recursive, int(0..1) exclude_shared, RequestID id); DAVLock|LockFlag check_locks(string path, int(0..1) recursive, RequestID id); mapping(string:mixed) unlock_file(string path, DAVLock lock, RequestID|int(0..0) id); int expire_locks(RequestID id); void refresh_lock(DAVLock lock); mapping(string:mixed)|DAVLock lock_file(string path, int(0..1) recursive, string lockscope, string locktype, int(0..) expiry_delta, array(Parser.XML.Tree.Node) owner, RequestID id); mapping|int(-1..0) low_get_file(RequestID id, int|void no_magic); mapping get_file(RequestID id, int|void no_magic, int|void internal_get); array(string) find_dir(string file, RequestID id, void|int(0..1) verbose); array(int)|object(Stdio.Stat) stat_file(string file, RequestID id); array open_file(string fname, string mode, RequestID id, void|int ig, void|int rc); mapping(string:array(mixed)) find_dir_stat(string file, RequestID id); array access(string file, RequestID id); string real_file(string file, RequestID id); int|string try_get_file(string s, RequestID id, int|void status, int|void nocache, int|void not_internal, mapping|void result_mapping); int(0..1) is_file(string virt_path, RequestID id, int(0..1)|void internal); void start(int num); void save_me(); int save_one( RoxenModule o ); RoxenModule reload_module( string modname ); RoxenModule enable_module( string modname, RoxenModule|void me, ModuleInfo|void moduleinfo, int|void nostart, int|void nosave ); void call_start_callbacks( RoxenModule me, ModuleInfo moduleinfo, ModuleCopies module, void|int newly_added); void call_low_start_callbacks( RoxenModule me, ModuleInfo moduleinfo, ModuleCopies module ); int disable_module( string modname, int|void nodest ); int add_modules( array(string) mods, int|void now ); RoxenModule find_module(string name); #if ROXEN_COMPAT < 2.2 Sql.Sql sql_cache_get(string what); Sql.Sql sql_connect(string db, void|string charset); #endif void enable_all_modules(); void low_init(void|int modules_already_enabled); string parse_rxml(string what, RequestID id, void|Stdio.File file, void|mapping defines ); void add_parse_module (RoxenModule mod); void remove_parse_module (RoxenModule mod); string real_file(string a, RequestID b); mapping authenticate_throw( RequestID id, string realm, UserDB|void database, AuthModule|void method); User authenticate( RequestID id, UserDB|void database, AuthModule|void method ); array(AuthModule) auth_modules(); array(UserDB) user_databases(); AuthModule find_auth_module( string name ); UserDB find_user_database( string name ); protected string _sprintf( ) { return "Configuration("+name+")"; } } //! @appears Protocol class Protocol { inherit BasicDefvar; constant name = "unknown"; //! Name used for internal identification. constant prot_name = "unknown"; //! Name of the protocol as seen in the protocol part of a url. constant supports_ipless = 0; constant requesthandlerfile = ""; constant default_port = 4711; int bound; int refs; program requesthandler; string path; int port; string ip; array(string) sorted_urls = ({}); mapping(string:mapping) urls = ([]); mapping(Configuration:mapping) conf_data = ([]); void ref(string url, mapping data); void unref(string url); Configuration find_configuration_for_url( string url, RequestID id, int|void no_default ); string get_key(); void save(); void restore(); }; class FakedVariables( mapping real_variables ) { // FIXME: _get_iterator() protected array _indices() { return indices( real_variables ); } protected array _values() { return map( _indices(), `[] ); } protected mixed fix_value( mixed what ) { if( !what ) return what; if( !arrayp(what) ) return what; // huh if( sizeof( what ) == 1 ) return what[0]; return what*"\0"; } protected mixed `[]( string ind ) { return fix_value( real_variables[ ind ] ); } protected mixed `->(string ind ) { return `[]( ind ); } protected mixed `[]=( string ind, mixed what ) { real_variables[ ind ] = ({ what }); return what; } protected mixed `->=(string ind, mixed what ) { return `[]=( ind,what ); } protected mixed _m_delete( mixed what ) { // report_debug(" _m_delete( %O )\n", what ); return fix_value( m_delete( real_variables, what ) ); } protected int _equal( mixed what ) { return `==(what); } protected int `==( mixed what ) { if( mappingp( what ) && (real_variables == what) ) return 1; } protected string _sprintf( int f ) { switch( f ) { case 'O': return sprintf( "FakedVariables(%O)", real_variables ); default: return sprintf( sprintf("%%%c", f ), real_variables ); } } protected this_program `|( mapping what ) { foreach( indices(what), string q )`[]=( q,what[q] ); return this_object(); } protected this_program `+=( mapping what ) { foreach( indices(what), string q )`[]=( q,what[q] ); return this_object(); } protected this_program `+( mapping what ) { foreach( indices(what), string q )`[]=( q,what[q] ); return this_object(); } protected mapping cast(string to) { if (to[..6]=="mapping") { array v=indices(real_variables); return mkmapping(v,map(v,`[])); } error("can't cast to %O\n",to); } } class PrefLanguages //! @appears PrefLanguages //! Support for language preferences. This object is typically //! accessed through @tt{id->misc->pref_languages@}. { int decoded=0; int sorted=0; // array(string) subtags=({}); array(string) languages=({}); array(float) qualities=({}); // Default action for delayed vary handling is to depend on the // Accept-Language header since that is init_pref_languages() uses. // If Preferred Language Analyzer is loaded it will update this array // based on what request properties it bases its language decision on. // Only when the request processing completes will we know all language // forks and can then install a vary callback. array(array(string|array)) delayed_vary_actions = ({ ({ "accept-language", 0 }) }); multiset(string) known_langs = (< >); protected string _sprintf(int c, mapping|void attrs) { return sprintf("PrefLanguages(%O)", get_languages()); } void register_known_language_forks(multiset(string) langs, void|RequestID id) { // Accumulate all known languages for this page. If the entry is // placed in the protocol cache we will be able to construct a vary // callback that can determine a proper cache key. known_langs |= langs; // If caller provides the current RequestID we can also propagate // the language set in the parent request. if (RequestID parent_id = id && id->misc->orig) { PrefLanguages parent_pl = parent_id->misc->pref_languages; parent_pl->register_known_language_forks(langs, parent_id); } } multiset(string) get_known_language_forks() { return known_langs; } void finalize_delayed_vary(RequestID id) { // No point in installing protocol cache arbitration when the requested // page isn't multilingual. if (sizeof(known_langs) < 2) return; VARY_WERROR("finalize_delayed_vary: actions: %O\n", delayed_vary_actions); foreach (delayed_vary_actions, array(string|array(string)) item) { function cb; switch (item[0]) { case "accept-language": cb = Roxen->get_lang_vary_cb(known_langs, "accept-language"); id->register_vary_callback("accept-language", cb); break; case "cookies": string lang_cookie = item[1]; cb = Roxen->get_lang_vary_cb(known_langs, "cookies", lang_cookie); id->register_vary_callback("cookies", cb); break; case "host": id->register_vary_callback("host"); break; case "variable": case "prestate": case "path": // All three are implicitly managed in the protocol cache since // they are part of the page URL. break; } // Don't depend on further properties as soon as one of the known // languages have appeared (since that language will be the one // shown in the page). if (array(string) property_langs = item[-1]) { foreach (property_langs, string lang) if (known_langs[lang]) return; } } } array(string) get_languages() { sort_lang(); return languages; } string get_language() { if(!languages || !sizeof(languages)) return 0; sort_lang(); return languages[0]; } array(float) get_qualities() { sort_lang(); return qualities; } float get_quality() { if(!qualities || !sizeof(qualities)) return 0.0; sort_lang(); return qualities[0]; } void set_sorted(array(string) lang, void|array(float) q) { languages=lang; if(q && sizeof(q)==sizeof(lang)) qualities=q; else qualities=({1.0})*sizeof(lang); sorted=1; decoded=1; } void sort_lang() { if(sorted && decoded) return; array(float) q; array(string) s=reverse(languages)-({""}) /*, u=({})*/; if(!decoded) { q=({}); s=Array.map(s, lambda(string x) { float n=1.0; string sub=""; sscanf(lower_case(x), "%s;q=%f", x, n); if(n==0.0) return ""; sscanf(x, "%s-%s", x, sub); if(x == "" ) return ""; q+=({n}); // u+=({sub}); return x; }); s-=({""}); decoded=1; } else q=reverse(qualities); sort(q, s /*, u */); languages=reverse(s); qualities=reverse(q); // subtags=reverse(u); // Remove duplicate entries caused by varying subtags multiset(string) known_langs = (< >); for (int i = 0; i < sizeof(languages); i++) { string l = languages[i]; if (known_langs[l]) { languages[i] = 0; qualities[i] = 0; } else { known_langs[l] = 1; } } languages -= ({ 0 }); qualities -= ({ 0 }); sorted=1; } } typedef function(CacheKey,mixed...:void) CacheActivationCB; class CacheKey //! @appears CacheKey //! //! Used as @expr{id->misc->cachekey@}. Every request that might be //! cacheable has an instance, and the protocol cache which stores the //! result of the request checks that this object still exists before //! using the cache entry. Thus other subsystems that provide data to //! the result can keep track of this object and use //! @[roxen.invalidate] on it whenever they change state in a way that //! invalidates the previous result. //! //! Those data providers should however not store this object //! directly, but instead call @[add_activation_cb]. That avoids //! unnecessary garbage (see below). //! //! A cache implementation must call @[activate] before storing the //! cache key. At that point the functions registered with //! @[add_activation_cb] are called, and the key gets added in the //! internal structures of the data providers. This avoids registering //! cache keys for results that never get cached, which would //! otherwise produce excessive amounts of garbage objects in those //! internal structures. Note that other code might need to call //! @[activate] to process the callbacks, so a key being active //! doesn't necessarily mean it's used in a cache. //! //! @note //! @[destruct] is traditionally used on cache keys to invalidate //! them. That is no longer recommended since it doesn't allow //! @[TristateCacheKey] to operate correctly. Nowadays //! @[roxen.invalidate] should always be used, regardless whether it's //! a tristate cache key or not. //! //! @note //! These objects can be destructed asynchronously; all accesses for //! things inside them have to rely on the interpreter lock, and code //! can never assume that @expr{id->misc->cachekey@} exists to begin //! with. { #ifdef ID_CACHEKEY_DEBUG RoxenDebug.ObjectMarker __marker = RoxenDebug.ObjectMarker (this); #endif protected array(array(CacheActivationCB|array)) activation_cbs; // Functions to call when the cache key is activated, i.e. stored // together with some result in a cache. Zero when the key already // is active. protected void create (void|int activate_immediately) { if (!activate_immediately) activation_cbs = ({}); } void add_activation_cb (CacheActivationCB cb, mixed... args) //! Register a callback that will be called if and when this cache //! key is used in a cache, i.e. is activated. The callback gets //! this object followed by @[args] as arguments and should do //! whatever bookkeeping necessary to keep track of the cache key so //! that it can be destructed. //! //! If this cache key already is active then @[cb] is called right //! away. //! //! The registered callbacks will be called in the same order they //! are added. //! //! @note //! Cache keys can be destructed at any time, and @[cb] might get //! called with an already destructed object. //! //! @note //! Take care to avoid cyclic refs when the activation callback is //! registered. This object should e.g. not be among @[args], and //! @[cb] should not be a lambda that contains references to this //! object. { // Relying on the interpreter lock here. if (activation_cbs) // Relying on the interpreter lock here too. activation_cbs += ({({cb, args})}); else cb (this, @args); } int activate() //! Activate the cache key. This must be called when the key is //! stored in a cache. Return nonzero if any callbacks got called. { // Relying on the interpreter lock here. if (array(array(CacheActivationCB|array)) cbs = activation_cbs) { // Relying on the interpreter lock here too. activation_cbs = 0; foreach (cbs, [CacheActivationCB cb, array args]) { #if 0 werror ("Activating key %O: Calling %O(%{%O, %})\n", this, cb, args); #endif cb (this, @args); } return sizeof (cbs); } return 0; } int activated() //! Returns nonzero iff the key is activated. { // Relying on the interpreter lock here. return !activation_cbs; } int activate_if_necessary() // Activate the key only if any activation cbs are installed. This // is a kludge to play safe in situations early in the request path // where we don't want to activate the key and where there aren't // any outstanding callbacks in the common case with a direct // request but might still be in the recursive case. Ignore if you // can. { // Relying on the interpreter lock here. if (array(array(CacheActivationCB|array)) cbs = activation_cbs) { if (sizeof (cbs)) { if (this) // Relying on the interpreter lock here. activation_cbs = 0; foreach (cbs, [CacheActivationCB cb, array args]) { #if 0 werror ("Activating key %O: Calling %O(%{%O, %})\n", this, cb, args); #endif cb (this, @args); } return 1; } } return 0; } protected string _sprintf (int flag) { return flag == 'O' && sprintf ("%s(%s)%s", function_name (object_program (this)) || "CacheKey", activation_cbs ? "inactive" : "active", #ifdef ID_CACHEKEY_DEBUG __marker ? "[" + __marker->count + "]" : "", #else "" #endif ); } } class TristateCacheKey //! @appears TristateCacheKey //! //! This is a variant of @[CacheKey] that adds a third state called //! "invalid" or "stale". The semantics of that is that the cache will //! continue to send the cached result for a stale cache entry until //! it get destructed, but the cache should trig an update to replace //! the cache entry as soon as possible. This is useful in cases where //! response times are more important than correctness. //! //! Subsystems that rely on valid data may use @[roxen.invalidp()] to //! check whether the cache entry is stale or not. //! //! As with the basic @[CacheKey], @[roxen.invalidate()] should be //! used to force a cache key into the stale state. { inherit CacheKey; protected int flags; int invalidp() //! Return nonzero if this cache key has been invalidated. //! //! Don't call directly - use @[roxen.invalidp] instead. That one //! deals properly with destruct races. //! //! @note //! If this function does not exist, the key is assumed //! to be valid for as long as it hasn't been destructed. //! //! @seealso //! @[roxen.invalidp()], @[invalidate()] { // DANGER HIGH HAZARD AREA: Exceptions in this function will go unseen. return flags; } void invalidate() //! Mark this cache key as invalid/stale. //! //! @note //! If this function does not exist, invalidation is done //! by destructing the cache key. //! //! @seealso //! @[roxen.invalidate()], @[invalidp()] { // DANGER HIGH HAZARD AREA: Exceptions in this function will go unseen. flags = 1; } } class ProtocolCacheKey //! @appears ProtocolCacheKey //! //! The cache key used by the protocol cache. { inherit TristateCacheKey; } // Kludge for resolver problems protected function _charset_decoder_func; string browser_supports_vary(string ignored, RequestID id) { return (string)!has_value(id->client||"", "MSIE"); } // This is a somewhat simplistic regexp that doesn't handle // quoted-string parameter values correctly. It's only used on content // types so we know wide strings aren't a problem. protected Regexp ct_charset_search = Regexp (";[ \t\n\r]*charset="); class RequestID //! @appears RequestID //! The request information object contains all request-local information and //! server as the vessel for most forms of intercommunication between modules, //! scripts, RXML and so on. It gets passed round to almost all API callbacks //! worth mentioning. A RequestID object is born when an incoming request is //! encountered, and its life expectancy is short, as it dies again when the //! request has passed through all levels of the <ref>module type calling //! sequence</ref>. { #ifdef ID_OBJ_DEBUG RoxenDebug.ObjectMarker __marker = RoxenDebug.ObjectMarker (this); #endif Configuration conf; Protocol port_obj; //! The port object this request came from. int time; //! Time of the request, standard unix time (seconds since the epoch; 1970). int hrtime; //! Time of the start of the request, as returned by @[gethrtime]. string raw_url; //! The nonparsed, nontouched, non-* URL requested by the client. //! Hence, this path is unlike @[not_query] and @[virtfile] not //! relative to the server URL and must be used in conjunction with //! the former to generate absolute paths within the server. Be //! aware that this string will contain any URL variables present in //! the request as well as the file path, and it is not decoded from //! the transport encoding. int do_not_disconnect; //! Typically 0, meaning the channel to the client will be disconnected upon //! finishing the request and the RequestID object destroyed with it. mapping (string:array) real_variables; //! Form variables submitted by the client browser, as found in the //! @expr{form@} scope in RXML. //! //! Both query (as found in the query part of the URL) and POST //! (submitted in the request body from a form response) variables //! share this scope. If the same variable occurs in both then the //! value(s) from the query part are appended to those from the POST //! response. //! //! The indices are the variable names. The values contain the //! variable value(s) for each variable. The variable values are //! stored in arrays to make it possible to hold more than one value //! for a variable. These arrays are never empty. //! //! All data (names and values) have been decoded from the transport //! encoding (i.e. @expr{%XX@} style escapes and the charset //! according to @[input_charset] have been decoded). See //! @[decode_query] for details. //! //! @note //! This mapping is often changed internally to produce an updated //! set of variables that is passed back to the client. //! //! @seealso //! @[rest_query], @expr{misc->post_variables@} mapping(string:mixed)|FakedVariables variables; //! @decl mapping(string:mixed) variables; //! //! The variables mapping is more or less identical to the //! real_variables maping, but each variable can only have one //! value, if the form variable was sent multiple times from the //! client (this happens, as an example, if you have checkbox //! variables with the same name but different values), the values //! will be separated with \0 (the null character) in this mapping. mapping misc; // Note that non-string indices are ok. //! This mapping contains miscellaneous non-standardized information, and //! is the typical location to store away your own request-local data for //! passing between modules et cetera. Be sure to use a key unique to your //! own application. //! //! If a subrequest (a.k.a. "fake" request) is generated within //! another request then the subrequest receives a copy (created //! with @[copy_value]) of this mapping. I.e. the subrequest sees //! any data put here by the parent request, but changes made in the //! subrequest won't affect the parent. //! //! These are some of the defined entries: //! @mapping //! @member int "cacheable" //! Time in seconds that the request is cacheable. Use //! @[get_max_cache()], @[set_max_cache()] or one of the cache //! macros to access. This setting both controls the maximum //! cache time in the protocol cache and the timestamp returned //! in the @expr{Expires@} header (an @expr{"expires"@} entry in //! the result mapping will override it, though). //! @member array(function) "_cachecallbacks" //! Callbacks to verify that the cache entry is valid. //! @member CacheKey "cachekey" //! @[CacheKey] for the request. //! @member multiset(string) "client_connection" //! Parsed request header "Connection". //! @member string "content-type" //! Alias for @expr{@[request_header]["content-type"]@}, the //! content type of the request. (Note the dash instead of //! underscore in the field name.) //! @member string "content_type_type" //! The content type itself from the @expr{Content-Type@} header //! of the request, i.e. without any parameters. It has been //! lowercased and whitespace stripped, so it's on a canonical //! form like e.g. @expr{"image/jpeg"@}. //! @member string "content_type_params" //! The parameters from the @expr{Content-Type@} header of the //! request, if any. Whitespace preceding the first parameter //! have been removed, but otherwise it remains unchanged. //! @member array "cookies" //! Empty array. Obsolete entry. //! @member string "connection" //! Protocol connection mode. Typically @tt{"keep-alive"@} or //! @tt{"close"@}. //! @member int "defaulted_conf" //! If set, then the url-to-configuration resolution failed to //! find a good configuration based on the interface, port, host //! header, and port path prefix. The value is an integer //! showing the "badness" of the fallback configuration chosen: //! @int //! @value 1 //! The host, port and path prefix didn't match among the //! urls registered for the interface the request was //! received on, but a match was found among the urls //! registered on an ANY interface for the same port number. //! @value 2 //! One of the configurations on the receiving port (c.f. //! @[port_obj]) had the "Default site" flag set and was //! therefore chosen. //! @value 3 //! One of the configurations in the server had the "Default //! site" flag set and was therefore chosen, regardless of //! the ports it has open. //! @value 4 //! No configuration with the "Default site" flag set was //! found, so the one with the least specific url on the //! receiving port was chosen. //! @endint //! @member mapping(string:mixed) "defines" //! RXML macros. //! @member int(100..) "error_code" //! Result error code unless specified elsewhere. //! @member string "etag" //! Entity tag for the request. If the request is cacheable in //! the protocol cache one will be generated if not already present. //! @member array(string) "files" //! Multipart/form-data variables that have an associated filename. //! @member string "host" //! The host header, exactly as read from the request. Since it //! isn't normalized, it's useful in e.g. redirects so that the //! client doesn't falsely conclude that the redirect has //! switched server (c.f. @[url_base]). //! @member string "hostname" //! Normalized hostname from the host header. The normalization //! means it's lowercased, and if it's an IPv6 address then it's //! converted to the basic @tt{x:x:x:x:x:x:x:x@} form (using //! @[Protocols.IPv6.normalize_addr_basic]). //! @member int "last_modified" //! Time stamp for when the request was last modified. //! @member int "len" //! Length in bytes of the data section of the request. //! @member int "_log_cheat_addition" //! Value to add to @expr{file->len@} to get the length //! to report in the access log. //! @member mapping(string:string|array(string)) "moreheads" //! Response headers. See @[add_response_header()] for details. //! @member int(1..1) "no_proto_cache" //! Flag indicating that the result should not be cached in //! the protocol cache. //! @member RequestID "orig" //! Originating @[RequestID] for recursive requests. //! @member int "port" //! Port number from the canonicalized host header. //! @member PrefLanguages "pref_languages" //! Language preferences for the request. //! @member mapping(string:array) "post_variables" //! For POST requests, these are the variables parsed from the //! request body. It is undefined otherwise. //! @member array "proxyauth" //! Decoded proxy authentication information. //! @member string "range" //! Byte range information. //! @member string "site_prefix_path" //! Site path prefix. //! @member Stat "stat" //! File status information for the request. //! @member multiset(string) "vary" //! Contains the active set of vary headers. Please use //! @[register_vary_callback()] to alter. All header names here //! should be lowercase to avoid problems with duplicates. //! @member array(string|function(string, RequestID:string)) @ //! "vary_cb_order" //! Contains the cache lookup callback functions relevant to the //! request so far in order. See @[register_vary_callback()] for //! details. //! @member mapping(string:multiset(function(string, RequestID:string))| @ //! int(1..1)) "vary_cb_set" //! Same content as @tt{"vary_cb_order"@} above, but only used to //! speed up some lookups. For internal use only. //! @endmapping mapping connection_misc = ([]); // Note that non-string indices are ok. //! This mapping contains miscellaneous non-standardized information, and //! is the typical location to store away your own connection-local data //! for passing between requests on the same connection et cetera. Be sure //! to use a key unique to your own application. //! Contains the current set of cookies. //! //! @note //! DON'T touch! //! //! @seealso //! @[cookies] mapping(string:string) real_cookies; //! Wrapper that calls @[register_vary_callback()] as appropriate when //! cookies are accessed. //! //! @note //! Uses the parent pointer to access @[register_vary_callback()] and //! will thus update the original @[RequestID] object even if copied //! to a cloned @[RequestID]. This is a feature. //! //! @seealso //! @[cookies], @[register_vary_callback()], @[Roxen.get_cookie_callback()] protected class CookieJar { //! Contains the set of cookies that have been zapped in some way. protected mapping(string:string) eaten = ([]); protected void create(string|array(string)|void contents) { VARY_WERROR("Initiating cookie jar.\n"); real_cookies = ([]); if(!contents) return; array tmp = arrayp(contents) ? contents : ({ contents}); foreach(tmp, string cookieheader) { foreach(((cookieheader/";") - ({""})), string c) { string name, value; while(sizeof(c) && c[0]==' ') c=c[1..]; if(sscanf(c, "%s=%s", name, value) == 2) { value=_Roxen.http_decode_string(value); name=_Roxen.http_decode_string(name); real_cookies[ name ]=value; #ifdef OLD_RXML_CONFIG // FIXME: Really ought to register this one... if( (name == "RoxenConfig") && strlen(value) ) config = mkmultiset( value/"," ); #endif } } } } protected string `->(string cookie) { if (supports && zero_type(eaten[cookie])) { VARY_WERROR("Looking at cookie %O from %s\n", cookie, describe_backtrace(({backtrace()[-2]}))); /* Workaround for MSIE 6's refusal to cache anything with * a Vary:Cookie header. */ register_vary_callback("user-agent", browser_supports_vary); if (supports->vary) { register_vary_callback("cookie", Roxen->get_cookie_callback(cookie)); } else { register_vary_callback("user-agent", Roxen->get_cookie_callback(cookie)); } } return real_cookies[cookie]; } protected string `[](mixed cookie) { if (stringp(cookie)) { return `->(cookie); } return UNDEFINED; } protected string `->=(string cookie, string value) { if (zero_type(eaten[cookie])) { eaten[cookie] = real_cookies[cookie]; } return real_cookies[cookie] = value; } protected string `[]=(mixed cookie, string value) { // FIXME: Warn if not string? return `->=(cookie, value); } protected string _m_delete(string cookie) { // FIXME: Warn if not string? if (zero_type(eaten[cookie])) { eaten[cookie] = real_cookies[cookie]; } return m_delete(real_cookies, cookie); } protected array(string) _indices() { register_vary_callback("cookie"); return indices(real_cookies); } protected array(string) _values() { register_vary_callback("cookie"); return values(real_cookies); } protected int _sizeof() { register_vary_callback("cookie"); return sizeof(real_cookies); } protected mapping(string:string) `+(mapping(string:string) other) { register_vary_callback("cookie"); return real_cookies + other; } protected mapping(string:string) ``+(mapping(string:string) other) { register_vary_callback("cookie"); return other + real_cookies; } //! Used to retrieve the original set of cookies at //! protocol cache store time. protected mapping(string:string) `~() { VARY_WERROR("Disconnecting cookie jar.\n"); return real_cookies + eaten; } protected string _sprintf(int fmt) { return fmt == 'O' && sprintf("CookieJar(%O)", real_cookies); } } CookieJar|mapping(string:string) cookies; //! The indices and values map to the names and values of the cookies sent //! by the client for the requested page. All data (names and values) are //! decoded from their possible transport encoding. //! //! @note //! Used to be a plain mapping in Roxen 4.0 and earlier. It now //! has a wrapper that registers dependencies on the various cookies. //! @note //! The wrapper is removed, and the contents partially restored at //! request send time. //! Call to initialize the cookies. //! //! Typically called from callbacks installed with //! @[register_vary_callback()] to ensure @[cookies] is initialized. void init_cookies(int|void no_cookie_jar) { if (!cookies) { cookies = CookieJar(request_headers["cookie"]); if (no_cookie_jar) { // Disable the cookie jar -- Called from log()? real_cookies = cookies = ~cookies; } } } void init_pref_languages() //! Call to initialize @code{@[misc]->pref_languages@}. //! //! Typically called from callbacks installed with //! @[register_vary_callback()] to ensure //! @code{@[misc]->pref_languages@} is initialized. { if (!misc->pref_languages) { misc->pref_languages=PrefLanguages(); if (string|array(string) contents = request_headers[ "accept-language" ]) { if( !arrayp( contents ) ) contents = (contents-" ")/","; else contents = Array.flatten( map( map( contents, `-, " " ), `/, "," ))-({""}); misc->pref_languages->languages=contents; misc["accept-language"] = contents; } } } mapping (string:array(string)|string) request_headers; //! Indices and values map to the names and values of all HTTP //! headers sent with the request, with lowercased header names. //! Here is where you look for the "user-agent" header, the //! "referer" [sic!] header and similar interesting data provided by //! the client. mapping (string:mixed) throttle; // ? mapping (string:mixed) client_var; //! The client scope; a mapping of various client-related variables, indices //! being the entity names and the values being their values respectively. multiset(string) prestate; //! A multiset of all prestates harvested from the URL. Prestates are boolean //! flags, who are introduced in an extra leading path segment of the URL //! path put within parentheses, as in <a //! href="http://docs.roxen.com/(tables)/">docs://www.roxen.com/(tables)/</a>, //! this rendering a prestate multiset <pi>(< "tables" >)</pi>. //! //! Prestates are mostly useful for debugging purposes, since prestates //! generally lead to multiple URLs for identical documents resulting in //! poor usage of browser/proxy caches and the like. See <ref>config</ref>. //! //! The transport encoding has been decoded (i.e. any @expr{%XX@} //! escapes and the charset according to @[input_charset]). multiset(string) config; //! Much like prestates, the id->config multiset is typically used for //! boolean information of state supplied by the client. The config state, //! however, is hidden in a client-side cookie treated specially by roxen, //! namely the <tt>RoxenConfig</tt> cookie. //! //! The transport encoding has been decoded (i.e. any @expr{%XX@} //! escapes and the charset according to @[input_charset]). multiset(string) supports; //! All flags set by the supports system. multiset(string) pragma; //! All pragmas (lower-cased for canonization) sent with the request. For //! real-world applications typically only <pi>pragma["no-cache"]</pi> is of //! any particular interest, this being sent when the user does a forced //! reload of the page. array(string) client; array(string) referer; Stdio.File my_fd; // Don't touch; use the returned file descriptor from connection() instead. string prot; //! The protocol used for the request, e g "FTP", "HTTP/1.0", "HTTP/1.1". //! (Se also <ref>clientprot</ref>.) string clientprot; //! The protocol the client wanted to use in the request. This may //! not be the same as <ref>prot</ref>, if the client wanted to talk //! a higher protocol version than the server supports to date. string method; //! The method used by the client in this request, e g "GET", "POST". string realfile; //! When the the requested resource is an actual file in the real //! filesystem, this is its path. string virtfile; //! The mountpoint of the location module that provided the requested file. //! Note that this is not accessable from location modules; you need to keep //! track of your mountpoint on your own using <ref>defvar()</ref> and //! <ref>query()</ref>. This mountpoint is relative to the server URL. string rest_query; //! The scraps and leftovers of the requested URL's query part after //! removing all variables (that is, all key=value pairs) from it. //! //! The transport encoding has been decoded (i.e. any @expr{%XX@} //! escapes and the charset according to @[input_charset]). The //! pieces have then been concatenated together again in the same //! order, separated by @expr{"&"@}. string raw; //! The raw, untouched request in its entirety. //! //! @seealso //! @[raw_url] string query; //! The query part (i.e. all characters after the first question //! mark) of the requested URL. //! //! The transport encoding has been decoded (i.e. any @expr{%XX@} //! escapes and the charset according to @[input_charset]). string not_query; //! The path to the requested resource that is below the virtual //! server's mountpoint. I.e. for a typical server registering a URL //! with no ending path component, @[not_query] will contain the //! full path. //! //! @[not_query] usually begins with @expr{"/"@} but that is not //! guaranteed since it's taken from the request line. It has //! however been simplified so it is guaranteed to not contain any //! @expr{"."@} or @expr{".."@} segments. //! //! The transport encoding has been decoded (i.e. any @expr{%XX@} //! escapes and the charset according to @[input_charset]). string input_charset; //! The charset that was used to decode @[prestate], @[config], //! @[query], @[not_query], @[rest_query], and the variable bindings //! in @[real_variables]. //! //! It is zero if they were not successfully charset decoded. That //! is effectively the same as if the charset was ISO-8859-1. //! //! @seealso //! @[decode_query] string extra_extension; string data; //! The raw request body, containing non-decoded post variables et cetera. string leftovers; string rawauth, realauth; // Used by many modules, so let's keep this. string since; string remoteaddr; //! The client's IP address. string host; //! The client's hostname, if resolved. multiset(string) cache_status = (<>); //! Contains the caches that were hit when the request was served. //! See the docstring for @tt{$cache-status@} in the @tt{LogFormat@} //! global variable for known values, but note that the multiset //! never actually contains the value @expr{"nocache"@}; it's only written //! when the multiset is empty. multiset(string) eval_status = (<>); //! Contains the content evaluators that were hit when the request //! was served. See the docstring for @tt{$eval-status@} in the //! @tt{LogFormat@} global variable for known values. object root_id; //! @decl RequestID root_id; //! The root id object directly associated with the request - remains //! the same for all id objects generated by <insert href> tags and //! similar conditions that invoke @[clone_me()]. protected void create(Stdio.File fd, Protocol port, Configuration conf){} void send(string|object what, int|void len){} protected SimpleNode xml_data; // XML data for the request. SimpleNode get_xml_data() { if (!sizeof(data)) return 0; if (xml_data) return xml_data; // FIXME: Probably ought to check that the content-type for // the request is text/xml. DAV_WERROR("Parsing XML data: %O\n", data); return xml_data = Parser.XML.Tree.simple_parse_input(data, 0, Parser.XML.Tree.PARSE_ENABLE_NAMESPACES); } // Parsed if-header for the request. protected mapping(string:array(array(array(string)))) if_data; #ifdef IF_HEADER_DEBUG #define IF_HDR_MSG(X...) werror (X) #else #define IF_HDR_MSG(X...) #endif //! Parse an RFC 2518 9.4 "If Header". //! //! @note //! For speed reasons the parsing is rather forgiving. //! //! @returns //! Returns @expr{0@} (zero) if there was no if header, or //! if parsing of the if header failed. //! Returns a mapping from resource name to condition on success. //! //! A condition is represented as an array of sub-conditions //! (@tt{List@} in RFC 2518), where each sub-condition is an array //! of tokens, and each token is an array of two elements, where //! the first is one of the strings @expr{"not"@}, @expr{"etag"@}, //! or @expr{"key"@}, and the second is the value. //! //! The resource @expr{0@} (zero) represents the default resource. mapping(string:array(array(array(string)))) get_if_data() { if (if_data) { IF_HDR_MSG ("get_if_data(): Returning cached result\n"); return sizeof(if_data) && if_data; } if_data = ([]); // Negative caching. string raw_header; if (!(raw_header = request_headers->if)) { IF_HDR_MSG ("get_if_data(): No if header\n"); return 0; } array(array(string|int|array(array(string)))) decoded_if = MIME.decode_words_tokenized_labled(raw_header); #if 0 IF_HDR_MSG("get_if_data(): decoded_if: %O\n", decoded_if); #endif if (!sizeof(decoded_if)) { IF_HDR_MSG("Got only whitespace.\n"); return 0; } mapping(string:array(array(array(string)))) res = ([ 0: ({}) ]); string tmp_resource; string resource; foreach(decoded_if, array(string|int|array(array(string))) symbol) { switch (symbol[0]) { case "special": switch(symbol[1]) { case '<': tmp_resource = ""; break; case '>': resource = tmp_resource; tmp_resource = 0; // Normalize. // FIXME: Check that the protocol and server parts refer // to this server. // FIXME: Support for servers mounted on subpaths. catch { resource = Standards.URI(resource)->path; }; if (!sizeof(resource) || (resource[-1] != '/')) resource += "/"; if (!res[resource]) res[resource] = ({}); break; default: if (tmp_resource) tmp_resource += sprintf("%c", symbol[1]); break; } break; case "word": case "domain-literal": // Resource if (!tmp_resource) return 0; tmp_resource += symbol[1]; break; case "comment": // Parenthesis expression. if (tmp_resource) { // Inside a resource. tmp_resource += "(" + symbol[1][0][0] + ")"; break; } array(array(string|int|array(array(string)))) sub_expr = MIME.decode_words_tokenized_labled(symbol[1][0][0]); int i; array(array(string)) expr = ({}); string tmp_key; for (i = 0; i < sizeof(sub_expr); i++) { switch(sub_expr[i][0]) { case "special": switch(sub_expr[i][1]) { case '<': tmp_key = ""; break; case '>': if (!tmp_key) { IF_HDR_MSG("No tmp_key.\n"); return 0; } expr += ({ ({ "key", tmp_key }) }); tmp_key = 0; break; default: if (tmp_key) tmp_key += sprintf("%c", sub_expr[i][1]); break; } break; case "domain-literal": if (tmp_key) { tmp_key += sub_expr[i][1]; break; } // entity-tag. string etag = sub_expr[i][1]; // etag is usually something like "[\"some etag\"]" here. sscanf(etag, "[%s]", etag); // Remove brackets expr += ({ ({ "etag", etag }) }); break; case "word": // State-token or Not. if (tmp_key) { tmp_key += sub_expr[i][1]; break; } if (lower_case(sub_expr[i][1]) == "not") { // Not expr += ({ ({ "not", 0 }) }); break; } IF_HDR_MSG("Word outside key: %O\n", sub_expr[i][1]); report_debug("Syntax error in if-header: %O\n", raw_header); return 0; } } if (tmp_key) { IF_HDR_MSG("Active tmp_key: %O\n", tmp_key); report_debug("Syntax error in if-header: %O\n", raw_header); return 0; } res[resource] += ({ expr }); break; default: report_debug("Syntax error in if-header: %O\n", raw_header); return 0; } } if (tmp_resource) { IF_HDR_MSG("Active tmp_resource: %O\n", tmp_resource); report_debug("Syntax error in if-header: %O\n", raw_header); return 0; } IF_HDR_MSG("get_if_data(): Parsed if header: %s:\n" "%O\n", raw_header, res); return if_data = res; } //! Register that the result was dependant on the request header //! specified by @[vary], and/or a callback @[cb] that generates //! a key that can be used as a decision variable. //! //! The headers registred in @[vary] during the requests parsing //! will be used to generate the vary header (RFC 2068 14.43) for //! the result. //! //! @param vary //! Either a (lower-case) string that specifies the name of //! a request header, or @tt{0@} (zero) which specifies that //! it doesn't depend on a header, but something else (eg //! the IP-number of the client (and thus will generate a //! @tt{"*"@} vary header. //! //! @param cb //! This function will be called at request time with the //! path of the request, and the @[RequestID]. It should //! return a key fragment (either a string or an integer). If //! @[cb] is not specified, it will default to a function that //! returns the value of the request header specified by @[vary]. //! //! @note //! The order of calls to @[register_vary_callback()] is significant //! since it will be used to create a decision tree. //! //! Note also that the function @[cb] should be fast, and avoid //! excessive lengths in the returned key, to keep down on //! perfomance issues. //! //! Caveat! The callback function gets called very early in //! the request processing, so not all fields in the @[RequestID] //! object may be valid yet. //! //! @seealso //! @[NOCACHE()] void register_vary_callback(string|void vary, function(string, RequestID: string|int)|void cb) { // Don't generate a vary header for the Host header. if (vary != "host") { if (!misc->vary) { misc->vary = (< vary || "*" >); } else { misc->vary[vary || "*"] = 1; } } if (!misc->vary_cb_set) { misc->vary_cb_set = cb ? ([vary: (<cb>)]) : ([vary: 1]); misc->vary_cb_order = ({ cb || vary }); VARY_WERROR("register_vary_callback(%O, %O)\n", vary, cb); return; } if (multiset(function(string,RequestID:string|int))|int(1..1) old = misc->vary_cb_set[vary]) { if (old == 1) { // The full header has already been registred. VARY_WERROR("register_vary_callback(%O, %O) Full header\n", vary, cb); return; } else if (old[cb]) { // Already registred. VARY_WERROR("register_vary_callback(%O, %O) Duplicate\n", vary, cb); return; } else if (!cb) { // Registering full header now - remove all callbacks. misc->vary_cb_order = misc->vary_cb_order - (array) old + ({vary}); misc->vary_cb_set[vary] = 1; VARY_WERROR("register_vary_callback(%O, 0) Removed old cbs\n", vary); return; } old[cb] = 1; } else misc->vary_cb_set[vary] = cb ? (<cb>) : 1; misc->vary_cb_order += ({ cb || vary }); VARY_WERROR("register_vary_callback(%O, %O)\n", vary, cb); } void unregister_vary_callback (string vary, void|function(string,RequestID:string|int) cb) //! Unregisters a dependency on a request header or a specific vary //! callback. @[vary] and @[cb] should be the same arguments that //! were previously passed to @[register_vary_callback]. If @[cb] is //! zero then all callbacks registered for the @[vary] header are //! unregistered. //! //! @note //! Try to avoid this function. It's ugly practice. { if (misc->vary) misc->vary[vary || "*"] = 0; if (!misc->vary_cb_set) { VARY_WERROR ("unregister_vary_callback (%O, %O) " "Got no vary registrations\n", vary, cb); return; } if (multiset(function(string,RequestID:string|int))|int(1..1) old = misc->vary_cb_set[vary]) { if (multisetp (old)) { if (cb) { if (old[cb]) { misc->vary_cb_order -= ({cb}); old[cb] = 0; if (!sizeof (old)) m_delete (misc->vary_cb_set, vary); VARY_WERROR ("unregister_vary_callback (%O, %O) " "Removed callback\n", vary, cb); } else { VARY_WERROR ("unregister_vary_callback (%O, %O) " "Callback wasn't registered\n", vary, cb); } } else { misc->vary_cb_order -= (array) old; m_delete (misc->vary_cb_set, vary); VARY_WERROR ("unregister_vary_callback (%O, 0) " "Removed %d callbacks\n", vary, sizeof (old)); } } else { if (cb) { VARY_WERROR ("unregister_vary_callback (%O, %O) " "Callback wasn't registered\n", vary, cb); } else { misc->vary_cb_order -= ({vary}); m_delete (misc->vary_cb_set, vary); VARY_WERROR ("unregister_vary_callback (%O, 0) " "Removed header\n", vary); } } } } protected string cached_url_base; string url_base() //! Returns the base part of the URL, i.e. what should be added in //! front of a path in the virtual filesystem to get the absolute //! URL to the page. The returned string ends with a "/", or is "" //! if no server base could be found. //! //! This function gets the correct host for protocols that handles //! IP-less hosts. { if (!cached_url_base) { string tmp; // We're looking at the host header... register_vary_callback("host"); // First look at the host header in the request. if (tmp = misc->host) { string scheme = port_obj->prot_name; if (has_prefix(tmp, "[")) { // IPv6 sscanf(tmp, "[%s]:%d", string host, int port); if (!port || port == port_obj->default_port) cached_url_base = scheme + "://[" + host + "]"; else cached_url_base = scheme + "://" + tmp; } else { int scanres = sscanf(tmp, "%[^:]:%d", string host, int port); if ((scanres < 2) || (port == port_obj->default_port)) { // Some clients don't send the port in the host header // if they've connected to the default port. // NOTE: We want the (probable) port number that the client // used here; NOT the actual port number, since there // may be port remappers in the way. // Remove redundant port number. cached_url_base = scheme + "://" + host; } else { cached_url_base = scheme + "://" + tmp; } } } // Then use the port object. else if (port_obj) { string host = port_obj->conf_data[conf]->hostname; if (host == "*") if (conf && sizeof (host = conf->get_url()) && (sscanf (host, "%*s://[%s]", string hostv6) == 2 || sscanf (host, "%*s://%[^:/]", string hostv4) == 2)) { // Use the hostname in the configuration url. host = hostv6 ? ("[" + hostv6 + "]") : hostv4; } else // Fall back to the numeric ip. host = port_obj->ip; cached_url_base = port_obj->prot_name + "://" + host; if (port_obj->port != port_obj->default_port) cached_url_base += ":" + port_obj->port; } // Then try the configuration url. else if (conf && sizeof (tmp = conf->get_url())) cached_url_base = tmp[..sizeof (tmp) - 2]; // Remove trailing '/'. // Lastly use a pathetic fallback. With this the produced urls // will still be relative, which has some chance of working. else return cached_url_base = ""; if (string p = misc->site_prefix_path) cached_url_base += p; cached_url_base += "/"; } return cached_url_base; } void add_response_header (string name, string value) //! Adds a header @[name] with the value @[value] to be sent in the //! http response. An existing header with the same name will not be //! overridden, instead another (duplicate) header line with //! @[value] will be sent in the response, after the old one(s). //! However, if a header with the same name and value already exists //! then another one isn't added. //! //! @note //! If used from within an RXML parse session, this function will //! ensure that the new header is registered properly in the RXML //! p-code cache. That's the primary reason to used it instead of //! adding the header directly to //! @tt{misc->defines[" _extra_heads"]@} or @tt{misc->moreheads@}. //! //! @note //! Although case is insignificant in http header names, it is //! significant here. @[name] should always follow the //! capitalization used in RFC 2616. //! //! @seealso //! @[set_response_header], @[get_response_headers], //! @[remove_response_headers] { mapping(string:string|array(string)) hdrs = misc->defines && misc->defines[" _extra_heads"] || misc->moreheads; if (!hdrs) hdrs = misc->moreheads = ([]); // Essentially Roxen.add_http_header inlined. Can't refer to it // from here due to the recursive resolver problems in Pike. array|string cur_val = hdrs[name]; if(cur_val) { if(arrayp(cur_val)) { if (!has_value(cur_val, value)) cur_val += ({ value }); } else { if (cur_val != value) cur_val = ({ cur_val, value }); } } else cur_val = value; if (hdrs == misc->moreheads) hdrs[name] = cur_val; else if (object/*(RXML.Context)*/ ctx = RXML_CONTEXT) ctx->set_var (name, cur_val, "header"); else hdrs[name] = cur_val; } void set_response_header (string name, string value) //! Sets the header @[name] to the value @[value] to be sent in the //! http response. If an existing header with the same name exists, //! its value(s) will be overridden. This is useful for headers like //! @expr{"Expire-Time"@}, otherwise @[add_response_header] is //! typically a better choice. //! //! @note //! If used from within an RXML parse session, this function will //! ensure that the new header is registered properly in the RXML //! p-code cache. That's the primary reason to used it instead of //! adding the header directly to //! @tt{misc->defines[" _extra_heads"]@} or @tt{misc->moreheads@}. //! //! @note //! Although case is insignificant in http header names, it is //! significant here. @[name] should always follow the //! capitalization used in RFC 2616. //! //! @seealso //! @[get_response_headers], @[remove_response_headers] { if (misc->defines && misc->defines[" _extra_heads"]) { misc->defines[" _extra_heads"][name] = value; if (object/*(RXML.Context)*/ ctx = RXML_CONTEXT) ctx->signal_var_change (name, "header"); } else { if (!misc->moreheads) misc->moreheads = ([]); misc->moreheads[name] = value; } } protected constant http_nontoken_chars = ([ 0:1, 1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1, 12:1, 13:1, 14:1, 15:1, 16:1, 17:1, 18:1, 19:1, 20:1, 21:1, 22:1, 23:1, 24:1, 25:1, 26:1, 27:1, 28:1, 29:1, 30:1, 31:1, '(':1, ')':1, '<':1, '>':1, '@':1, ',':1, ';':1, ':':1, '\\':1, '"':1, '/':1, '[':1, ']':1, '?':1, '=':1, '{':1, '}':1, ' ':1, '\t':1]); #define MATCH_TOKEN_PREFIX(VAL, PREFIX) \ (VAL == PREFIX || \ has_prefix (VAL, PREFIX) && http_nontoken_chars[VAL[sizeof (PREFIX)]]) array(string) get_response_headers (string name, void|string value_prefix) //! Returns the values of all headers with the given @[name] in the //! set of headers that are to be sent in the response. //! //! If @[value_prefix] is given then it must match a prefix of the //! header value up to a token boundary for the value to be //! returned. //! //! @returns //! Returns an array containing the matching values (zero or more). //! //! @note //! This function only searches through headers in //! @tt{misc->defines[" _extra_heads"]@} and @tt{misc->moreheads@}, //! i.e. headers that have been set using @[add_response_header] or //! @[set_response_header]. { array(string) res = ({}); foreach (({misc->defines && misc->defines[" _extra_heads"], misc->moreheads}), mapping(string:string|array(string)) hdrs) if (hdrs) { if (array(string)|string cur_val = hdrs[name]) { if (!value_prefix) res += arrayp (cur_val) ? cur_val : ({cur_val}); else { if (arrayp (cur_val)) { foreach (cur_val, string val) if (MATCH_TOKEN_PREFIX (val, value_prefix)) res += ({val}); } else if (MATCH_TOKEN_PREFIX (cur_val, value_prefix)) res += ({cur_val}); } } } return res; } int remove_response_headers (string name, void|string value_prefix) //! Removes a header with the given @[name] from the set of headers //! that are to be sent in the response. //! //! If @[value_prefix] is given then it must match a prefix of the //! header value up to a token boundary for the header to be //! removed, otherwise all headers with the given name are removed. //! //! @returns //! Returns nonzero if at least one header was removed. //! //! @note //! This function only removes headers in //! @tt{misc->defines[" _extra_heads"]@} and @tt{misc->moreheads@}, //! i.e. headers that have been set using @[add_response_header] or //! @[set_response_header]. It's possible that a matching header //! gets sent anyway if it gets added later or through other means //! (e.g. through @tt{"extra_heads"@} in a response mapping). { int removed; foreach (({misc->defines && misc->defines[" _extra_heads"], misc->moreheads}), mapping(string:string|array(string)) hdrs) if (hdrs) { if (array(string)|string cur_val = hdrs[name]) { if (!value_prefix) { m_delete (hdrs, name); removed = 1; } else { if (arrayp (cur_val)) { foreach (cur_val; int i; string val) if (MATCH_TOKEN_PREFIX (val, value_prefix)) { cur_val[i] = 0; removed = 1; } cur_val -= ({0}); if (sizeof (cur_val)) hdrs[name] = cur_val; else m_delete (hdrs, name); } else if (MATCH_TOKEN_PREFIX (cur_val, value_prefix)) { m_delete (hdrs, name); removed = 1; } } } } return removed; } protected MultiStatus multi_status; MultiStatus get_multi_status() //! Returns a @[MultiStatus] object that will be used to produce a //! 207 Multi-Status response (RFC 2518 10.2). It's only consulted //! if the result returned from @[RoxenModule.find_file] et al is an //! empty mapping. //! //! @note //! It's not necessarily safe to assume that there aren't any //! multi-status responses stored here already on entry to //! @[find_file] et al. C.f. @[multi_status_size]. //! //! @seealso //! @[set_status_for_path] { if (!multi_status) multi_status = MultiStatus(); return multi_status; } int multi_status_size() //! Returns the number responses that have been added to the //! @[MultiStatus] object returned by @[get_multi_status]. Useful to //! see whether a (part of a) recursive operation added any errors //! or other results. { return multi_status && multi_status->num_responses(); } void set_status_for_path (string path, 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 //! @[get_multi_status]. //! //! @param path //! Absolute path in the configuration to which the status //! applies. Note that filesystem modules need to prepend their //! location to their internal paths. //! //! @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]. //! //! @seealso //! @[Roxen.http_status] { if (sizeof (args)) message = sprintf (message, @args); ASSERT_IF_DEBUG (has_prefix (path, "/")); get_multi_status()->add_status (url_base() + path[1..], status_code, message); } void set_status_for_url (string url, int status_code, string|void message, mixed... args) //! Register a status to be included in the response that applies //! only for the given URL. Similar to @[set_status_for_path], but //! takes a complete URL instead of an absolute path within the //! configuration. { if (sizeof (args)) message = sprintf (message, @args); get_multi_status()->add_status (url, status_code, message); } // Charset handling array(string) output_charset = ({}); void set_output_charset( string|function to, int|void mode ) { #ifdef DEBUG if (stringp (to)) // This will throw an error if the charset is invalid. Locale.Charset.encoder (to); #endif if (object/*(RXML.Context)*/ ctx = RXML_CONTEXT) ctx->add_p_code_callback ("set_output_charset", to, mode); if( has_value (output_charset, to) ) // Already done. return; switch( mode ) { case 0: // Really set. output_charset = ({ to }); break; case 1: // Only set if not already set. if( !sizeof( output_charset ) ) output_charset = ({ to }); break; case 2: // Join. if (sizeof (output_charset) && (!stringp (to) || !stringp (output_charset[0]))) error ("Can't join charsets with functions (%O with %O).\n", to, output_charset[0]); output_charset += ({ to }); break; } } string|function(string:string) get_output_charset() { string charset; function(string:string) encoder; foreach( output_charset, string|function f ) [charset,encoder] = join_charset(charset, f, encoder, 0); return charset || encoder; } protected string charset_name(function|string what) { switch (what) { case string_to_unicode: return "ISO10646-1"; case string_to_utf8: return "UTF-8"; default: return upper_case((string) what); } } protected function charset_function(function|string what, int allow_entities) { switch (what) { case "ISO-10646-1": case "ISO10646-1": case string_to_unicode: return string_to_unicode; case "UTF-8": case string_to_utf8: return string_to_utf8; default: // Use entity fallback if content type allows it function fallback_func = allow_entities && lambda(string char) { return sprintf("&#x%x;", char[0]); }; _charset_decoder_func = _charset_decoder_func || Roxen->_charset_decoder; return _charset_decoder_func(Locale.Charset.encoder((string) what, "", fallback_func)) ->decode; } } protected array(string) join_charset(string old, function|string add, function oldcodec, int allow_entities) { switch (old && upper_case(old)) { case 0: case "ISO8859-1": case "ISO-8859-1": return ({ charset_name(add), charset_function(add, allow_entities) }); case "ISO10646-1": case "UTF-8": return ({ old, oldcodec }); // Everything goes here. :-) case "ISO-2022": return ({ old, oldcodec }); // Not really true, but how to know this? default: // Not true, but there is no easy way to add charsets yet... #if 1 // The safe choice. return ({"UTF-8", string_to_utf8}); #else return ({ charset_name(add), charset_function(add, allow_entities) }); #endif } } array replace_charset_placeholder(string charset, string what, int allow_entities) { // If we allow entities we also replace the automatic charset placeholder with the charset in use if(allow_entities && charset) what = replace(what, Roxen->magic_charset_variable_placeholder, charset); return ({ charset, what }); } array(string) output_encode(string what, int|void allow_entities, string|void force_charset) { // Performance optimization for unneeded ISO-8859-1 recoding of // strings which already are narrow. if (String.width(what) == 8) { if (force_charset) { if (upper_case(force_charset) == "ISO-8859-1") return replace_charset_placeholder("ISO-8859-1", what, allow_entities); } else { if (sizeof(output_charset) == 1 && upper_case(output_charset[0]) == "ISO-8859-1") return replace_charset_placeholder("ISO-8859-1", what, allow_entities); } } if (!force_charset) { string charset; function encoder; foreach( output_charset, string|function f ) [charset,encoder] = join_charset(charset, f, encoder, allow_entities); if (!encoder) if (String.width(what) > 8) { charset = "UTF-8"; encoder = string_to_utf8; } if (encoder) what = encoder(what); return replace_charset_placeholder( charset, what, allow_entities ); } else return ({ 0, Locale.Charset.encoder((force_charset / "=")[-1])->feed(what)->drain() }); } string decode_query (string path, array(string) split_query, string decode_charset) //! Parses and decodes a query. //! //! @[path] is returned after decoding the transport encoding. //! //! Each element in @[split_query] is parsed as a variable tuple on //! the form @expr{var=val@} according to the MIME type //! application/x-www-form-urlencoded (see section 17.13.4 in the //! HTML 4.01 standard). //! //! All elements containing @expr{"="@} are treated as form variable //! bindings and are added to @[real_variables] after the //! @expr{%XX@} style transport encoding has been decoded. //! //! Any remaining elements are added to @[rest_query] after decoding //! the transport encoding. //! //! If @[decode_charset] is a string, it defines a charset to decode //! with after the transport encoding has been removed. The string //! can be on the combined form understood by //! @[Roxen.get_decoder_for_client_charset]. //! //! If @[decode_charset] has the special value @expr{"magic"@} then //! the function will look for a variable tuple with //! @expr{magic_roxen_automatic_charset_variable@} and use //! heuristics on that to figure out the character set that //! @[query_string] has been encoded with. See the RXML tag //! @expr{<roxen-automatic-charset-variable>@} and //! @[Roxen.get_client_charset]. //! //! If @[decode_charset] has the special value //! @expr{"roxen-http-default"@} then the function will first try //! the @expr{"magic"@} method above, and if the special variable is //! not found it tries to UTF-8 decode. If there is a decode failure //! then it is ignored and no charset decoding is done (meaning that //! the original charset is effectively assumed to be ISO-8859-1). //! As the name suggests, this is the default method used on //! incoming requests by the http protocol module. //! //! The variable @[input_charset] is set to the charset successfully //! used if @[decode_charset] was given. The charset decoding uses //! an all-or-nothing approach - if there is an error decoding any //! string then no string is decoded. If the function throws an //! error due to a decode failure then @[real_variables] and //! @[rest_query] remain unchanged. //! //! @note //! Using @expr{"utf-8"@} as @[decode_charset] reverses the URI //! encoding produced by @[Roxen.http_encode_url] for eight bit and //! wider chars. That is compliant with the IRI standard (RFC 3987) //! and HTML 4.01 (appendix B.2.1). { path = _Roxen.http_decode_string (path); mapping(string:array(string)) vars = ([]); string rest; { array(string) rests = ({}); foreach (split_query, string v) { if(sscanf(v, "%s=%s", string a, string b) == 2) { a = _Roxen.http_decode_string(replace(a, "+", " ")); b = _Roxen.http_decode_string(replace(b, "+", " ")); vars[ a ] += ({ b }); } else rests += ({_Roxen.http_decode_string( v )}); } rest = rests * "&"; } #ifdef ENABLE_IDIOTIC_STUPID_STANDARD // This comes from http.pike with the illustrious comment "IDIOTIC // STUPID STANDARD". I fail to find any standard that says // anything about this, so nowadays it's disabled by default. // /mast rest=replace(rest, "+", "\000"); #endif do_decode_charset: if (decode_charset == "roxen-http-default") { array(string) magic = vars->magic_roxen_automatic_charset_variable; decode_charset = magic && Roxen->get_client_charset (magic[0]); function(string:string) decoder = decode_charset ? Roxen->get_decoder_for_client_charset (decode_charset) : utf8_to_string; mapping(string:array(string)) decoded_vars = ([]); if (mixed err = catch { path = decoder (path); foreach (vars; string var; array(string) vals) decoded_vars[var] = map (vals, decoder); rest = decoder (rest); }) { #ifdef DEBUG if (decode_charset) report_debug ("Failed to decode query %O using charset %O derived " "from magic_roxen_automatic_charset_variable %O: %s", ({path, (split_query + ({rest})) * "&"}) * "?", decode_charset, magic[0], describe_error (err)); #if 0 else report_debug ("Failed to decode query %O using UTF-8: %s", ({path, (split_query + ({rest})) * "&"}) * "?", describe_error (err)); #endif #endif } else { vars = decoded_vars; input_charset = decode_charset || "utf-8"; // Set this after we're done. } } else if (decode_charset) { if (decode_charset == "magic") { array(string) magic = vars->magic_roxen_automatic_charset_variable; decode_charset = magic && Roxen->get_client_charset (magic[0]); if (!decode_charset) break do_decode_charset; } function(string:string) decoder = Roxen->get_decoder_for_client_charset (decode_charset); path = decoder (path); foreach (vars; string var; array(string) vals) vars[var] = map (vals, decoder); rest = decoder (rest); input_charset = decode_charset; // Set this after we're done. } if (sizeof (real_variables)) foreach (vars; string var; array(string) vals) real_variables[var] += vals; else { real_variables = vars; // Must fix the mapping in FakedVariables too. variables = FakedVariables (vars); } rest_query = rest; return path; } string scan_for_query( string f ) { if(sscanf(f,"%s?%s", f, query) == 2) f = decode_query (f, query / "&", 0); return f; } mapping(string:string|array(string)) make_response_headers ( mapping(string:mixed) file) //! Make the response headers from a response mapping for this //! request. The headers associated with transfer modifications of //! the response, e.g. 206 Partial Content and 304 Not Modified, are //! not calculated here. //! //! @note //! Is destructive on @[file] and on various data in the request; //! should only be called once for a @[RequestID] instance. { if (!file->stat) file->stat = misc->stat; if(objectp(file->file)) { if(!file->stat && file->file->stat) file->stat = file->file->stat(); if (zero_type(misc->cacheable) && file->file->is_file) { // Assume a cacheablity on the order of the age of the file. misc->cacheable = (predef::time(1) - file->stat[ST_MTIME])/4; } } if( Stat fstat = file->stat ) { if( !file->len && (fstat[1] >= 0) && file->file ) file->len = fstat[1]; if ( fstat[ST_MTIME] > misc->last_modified ) misc->last_modified = fstat[ST_MTIME]; } if (!file->error) file->error = Protocols.HTTP.HTTP_OK; if(!file->type) file->type="text/plain"; string type = arrayp(file->type) ? file->type[0] : file->type; mapping(string:string) heads = ([]); // Collect info about language forks and their protocol cache callbacks // and Vary header effects. if (PrefLanguages pl = misc->pref_languages) pl->finalize_delayed_vary(this); if( !zero_type(misc->cacheable) && (misc->cacheable != INITIAL_CACHEABLE) ) { if (!misc->cacheable) { // It expired a year ago. heads["Expires"] = Roxen->http_date( predef::time(1)-31557600 ); // Force the vary header generated below to be "*". misc->vary = (< 0 >); VARY_WERROR("Not cacheable. Force vary *.\n"); } else heads["Expires"] = Roxen->http_date( predef::time(1)+misc->cacheable ); if (misc->cacheable < INITIAL_CACHEABLE) { // Data with expiry is assumed to have been generated at the // same instant. misc->last_modified = predef::time(1); } } if (misc->last_modified) heads["Last-Modified"] = Roxen->http_date(misc->last_modified); if (has_prefix (type, "text/") && !ct_charset_search->match (type)) { string charset; if( stringp(file->data) ) { if (file->charset) // Join to be on the safe side. set_output_charset (file->charset, 2); if (sizeof (output_charset) || (String.width(file->data) > 8)) { int allow_entities = has_prefix(type, "text/xml") || has_prefix(type, "text/html"); [charset, file->data] = output_encode( file->data, allow_entities ); } } // Always set the charset. At least Firefox 2.0 is known to // propagate the charset from the frameset page to the frame // pages if they lack explicit charsets. type += "; charset=" + (charset || "ISO-8859-1"); } heads["Content-Type"] = type; if (stringp (file->data)) file->len = sizeof (file->data); #ifndef DISABLE_BYTE_RANGES heads["Accept-Ranges"] = "bytes"; #endif heads["Server"] = replace(roxenp()->version(), " ", "_"); if (file->error == 500) { // Internal server error. // Make sure the connection is closed to resync. heads["Connection"] = "close"; misc->connection = "close"; } else if( misc->connection ) heads["Connection"] = misc->connection; if(file->encoding) heads["Content-Encoding"] = file->encoding; heads->Date = Roxen->http_date(predef::time(1)); if(file->expires) heads->Expires = Roxen->http_date(file->expires); //if( file->len > 0 || (file->error != 200) ) heads["Content-Length"] = (string)file->len; if (misc->etag) heads->ETag = misc->etag; #ifdef RAM_CACHE if (!misc->etag && file->len && (file->data || file->file) && file->error == 200 && (<"HEAD", "GET">)[method] && (file->len < conf->datacache->max_file_size)) { string data = ""; if (file->file) { data = file->file->read(file->len); if (file->data && (sizeof(data) < file->len)) { data += file->data[..file->len - (sizeof(data)+1)]; } m_delete(file, "file"); } else if (file->data) { data = file->data[..file->len - 1]; } file->data = data; heads->ETag = misc->etag = sprintf("\"%s\"", String.string2hex(Crypto.MD5.hash(data))); } #endif /* RAM_CACHE */ if (misc->vary && sizeof(misc->vary)) { // Generate a vary header. VARY_WERROR("Full set: %s\n", ((array)misc->vary) * ", "); if (!supports->vary) { // Broken support for vary. heads->Vary = "User-Agent"; #ifndef DISABLE_VARY_EXPIRES_FALLBACK // It expired a year ago. heads->Expires = Roxen->http_date(predef::time(1)-31557600); #endif /* !DISABLE_VARY_EXPIRES_FALLBACK */ VARY_WERROR("Vary not supported by the browser.\n"); } else if (misc->vary[0]) { // Depends on non-headers. heads->Vary = "*"; } else { heads->Vary = ((array)misc->vary) * ", "; } } // Note: The following will cause headers with the same names to // be replaced rather than added to. That's not always what one // wants, but otoh it's not clear in which order to merge them // either. if(mappingp(file->extra_heads)) heads |= file->extra_heads; if(mappingp(misc->moreheads)) heads |= misc->moreheads; return heads; } void adjust_for_config_path( string p ) { if( not_query ) not_query = not_query[ strlen(p).. ]; raw_url = raw_url[ strlen(p).. ]; misc->site_prefix_path = p; } void end(string|void s, int|void keepit){} void ready_to_receive(){} void send_result(mapping|void result) { #ifdef DEBUG error ("send_result not overridden.\n"); #endif } RequestID clone_me() { object c,t; c=object_program(t=this_object())(0, port_obj, conf); c->port_obj = port_obj; c->conf = conf; c->root_id = root_id; c->time = time; c->raw_url = raw_url; c->real_variables = copy_value( real_variables ); c->variables = FakedVariables( c->real_variables ); c->misc = copy_value( misc ); c->misc->orig = t; c->connection_misc = connection_misc; c->prestate = prestate; c->supports = supports; c->config = config; c->client_var = client_var; c->remoteaddr = remoteaddr; c->host = host; c->client = client; c->referer = referer; c->pragma = pragma; c->cookies = cookies; c->request_headers = request_headers + ([]); c->my_fd = 0; c->prot = prot; c->clientprot = clientprot; c->method = method; c->rest_query = rest_query; c->raw = raw; c->query = query; c->not_query = not_query; c->data = data; c->extra_extension = extra_extension; c->realauth = realauth; c->rawauth = rawauth; c->since = since; return c; } Stdio.File connection( ) //! Returns the file descriptor used for the connection to the client. { return my_fd; } Configuration configuration() //! Returns the <ref>Configuration</ref> object of the virtual server that //! is handling the request. { return conf; } string _sprintf (int flag) { return flag == 'O' && ("RequestID(" + (raw_url||"") + ")" #ifdef ID_OBJ_DEBUG + (__marker ? "[" + __marker->count + "]" : "") #endif ); } } //! @appears MultiStatusStatus class MultiStatusStatus (int http_code, void|string message) { constant is_status = 1; void build_response (SimpleElementNode response_node) { SimpleElementNode node = SimpleElementNode("DAV:status", ([])); response_node->add_child (node); // No use wasting space on a good message in the status node since // we have it in the responsedescription instead. node->add_child(SimpleTextNode(sprintf("HTTP/1.1 %d ", http_code))); if (message) { node = SimpleElementNode ("DAV:responsedescription", ([])); response_node->add_child (node); node->add_child (SimpleTextNode (message)); } } int `== (mixed other) { return objectp (other) && object_program (other) == this_program && other->http_code == http_code && other->message == message; } int __hash() { return http_code + (message && hash (message)); } string _sprintf (int flag) { return flag == 'O' && sprintf ("MultiStatusStatus(%d,%O)", http_code, message); } } private SimpleElementNode ok_status_node = SimpleElementNode("DAV:status", ([]))->add_child(SimpleTextNode("HTTP/1.1 200 OK")); //! @appears MultiStatusPropStat class MultiStatusPropStat { constant is_prop_stat = 1; mapping(string:string|SimpleNode|array(SimpleNode)|MultiStatusStatus) properties = ([]); //! The property settings. Indexed on property name (with complete //! XML namespace). Values are: //! //! @mixed //! @type array(SimpleNode) //! The property value as a sequence of XML nodes. These nodes //! are used as children to the property nodes in the DAV //! protocol. //! @type SimpleNode //! Same as an array containing only this node. //! @type string //! Same as a single @[Parser.XML.Tree.SimpleTextNode] with this value. //! @type int(0..0) //! The property exists but has no value. //! @type MultiStatusStatus //! There was an error querying the property and this is the //! status it generated instead of a value. //! @endmixed void build_response (SimpleElementNode response_node) { SimpleElementNode ok_prop_node = SimpleElementNode("DAV:prop", ([])); mapping(MultiStatusStatus:SimpleNode) prop_nodes = ([]); foreach (properties; string prop_name; string|SimpleNode|array(SimpleNode)|MultiStatusStatus value) { if (objectp (value) && value->is_status) { // Group together failed properties according to status codes. SimpleNode prop_node = prop_nodes[value]; if (!prop_node) prop_nodes[value] = prop_node = SimpleElementNode("DAV:prop", ([])); prop_node->add_child(SimpleElementNode(prop_name, ([]))); } else { // The property is ok and has a value. string ms_type; // The DAV client in Windows XP Pro (at least) requires types // on the date fields to parse them correctly. The type system // is of course some MS goo. switch (prop_name) { case "DAV:creationdate": ms_type = "dateTime.tz"; break; case "DAV:getlastmodified": ms_type = "dateTime.rfc1123"; break; // MS header - format unknown. //case "DAV:lastaccessed": ms_type = "dateTime.tz"; break; } SimpleElementNode node = SimpleElementNode(prop_name, ms_type ? ([ "urn:schemas-microsoft-com:datatypesdt": ms_type ]) : ([])); ok_prop_node->add_child (node); if (arrayp (value)) node->replace_children (value); else if (stringp (value)) node->add_child(SimpleTextNode(value)); else if (objectp (value)) node->add_child (value); } } if (ok_prop_node->count_children()) { SimpleElementNode propstat_node = SimpleElementNode("DAV:propstat", ([])); response_node->add_child (propstat_node); propstat_node->add_child (ok_prop_node); propstat_node->add_child (ok_status_node); } foreach (prop_nodes; MultiStatusStatus status; SimpleNode prop_node) { SimpleElementNode propstat_node = SimpleElementNode("DAV:propstat", ([])); response_node->add_child (propstat_node); propstat_node->add_child (prop_node); status->build_response (propstat_node); } } string _sprintf (int flag) { return flag == 'O' && sprintf ("MultiStatusPropStat(%O)", properties); } } //! @appears MultiStatusNode typedef MultiStatusStatus|MultiStatusPropStat MultiStatusNode; //! @appears MultiStatus class MultiStatus { protected mapping(string:MultiStatusNode) status_set = ([]); protected mapping(string:string) args = ([ "xmlns:DAV": "DAV:", // MS namespace for data types; see comment in // XMLPropStatNode.add_property. Note: The XML parser in the // MS DAV client is broken and requires the break of the last // word "datatypesdt" to be exactly at this point. "xmlns:MS": "urn:schemas-microsoft-com:datatypes", ]); int num_responses() //! Returns the number of responses that have been added to this //! object. { return sizeof (status_set); } MultiStatusNode get_response (string href) //! Returns the response stored for @[href] if there is any. //! //! @returns //! @mixed //! @type MultiStatusStatus //! There was some kind of error on @[href] and this is the //! stored status. This type is preferably checked by testing //! for a nonzero @expr{is_status@} member. //! @type MultiStatusPropStat //! A property query was successful on @[href] and the //! returned object contains the results for some or all //! properties. This type is preferably checked by testing for //! a nonzero @expr{is_prop_stat@} member. //! @endmixed { return status_set[href]; } mapping(string:MultiStatusNode) get_responses_by_prefix (string href_prefix) //! Returns the stored responses for all URI:s that got //! @[href_prefix] as prefix. See @[get_response] for details about //! the response value. //! //! Prefixes are only matched at @expr{"/"@} boundaries, so //! @expr{"http://x.se/foo"@} is considered a prefix of //! @expr{"http://x.se/foo/bar"@} but not //! @expr{"http://x.se/foobar"@}. As a special case, the empty //! string as @[href_prefix] returns all stored responses. { if (href_prefix == "") return status_set + ([]); mapping(string:MultiStatusNode) result = ([]); if (!has_suffix (href_prefix, "/")) { if (MultiStatusNode stat = status_set[href_prefix]) result[href_prefix] = stat; href_prefix += "/"; } foreach (status_set; string href; MultiStatusNode stat) if (has_prefix (href, href_prefix)) result[href] = stat; return result; } //! Add DAV:propstat information about the property @[prop_name] for //! the resource @[href]. //! //! @param prop_value //! Optional property value. It can be one of the following: //! @mixed prop_value //! @type void|int(0..0) //! Operation performed ok, no value. //! @type string|SimpleNode|array(SimpleNode) //! Property has value @[prop_value]. //! @type MultiStatusStatus //! @type mapping(string:mixed) //! Operation failed as described by the mapping. //! @endmixed void add_property(string href, string prop_name, void|int(0..0)|string|array(SimpleNode)|SimpleNode| MultiStatusStatus|mapping(string:mixed) prop_value) { MultiStatusPropStat prop_stat; if (MultiStatusNode stat = status_set[href]) if (stat->is_prop_stat) // This will cause override of an existing MultiStatusStatus. // Presumably it came from another file system that is now // being hidden. Or is it better to keep the status node and // do nothing here instead? prop_stat = stat; if (!prop_stat) prop_stat = status_set[href] = MultiStatusPropStat(); if (mappingp (prop_value)) prop_value = MultiStatusStatus (prop_value->error, prop_value->rettext); prop_stat->properties[prop_name] = prop_value; } void add_status (string href, int status_code, void|string message, mixed... args) //! Add a status for the specified url. The remaining arguments are //! the same as for @[Roxen.http_status]. { if (sizeof (args)) message = sprintf (message, @args); if (!status_code) error("Bad status code!\n"); status_set[href] = MultiStatusStatus (status_code, message); } void add_namespace (string namespace) //! Add a namespace to the generated @tt{<multistatus>@} element. //! Useful if several properties share a namespace. { int ns_count = 0; string ns_name; while (args[ns_name = "xmlns:NS" + ns_count]) { if (args[ns_name] == namespace) return; ns_count++; } args[ns_name] = namespace; } SimpleNode get_xml_node() { SimpleElementNode node; SimpleRootNode root = SimpleRootNode()-> add_child(SimpleHeaderNode((["version": "1.0", "encoding": "utf-8"])))-> add_child(node = SimpleElementNode("DAV:multistatus", args)); array(SimpleNode) response_xml = allocate(sizeof(status_set)); int i; DAV_WERROR("Generating XML Nodes for status_set:%O\n", status_set); // Sort this because some client (which one?) requires collections // to come before the entries they contain. foreach(sort(indices(status_set)), string href) { SimpleElementNode response_node = SimpleElementNode("DAV:response", ([]))-> add_child(SimpleElementNode("DAV:href", ([]))-> add_child(SimpleTextNode(href))); response_xml[i++] = response_node; status_set[href]->build_response (response_node); } node->replace_children(response_xml); return root; } mapping(string:mixed) http_answer() { string xml = get_xml_node()->render_xml(); return ([ "error": 207, "data": xml, "len": sizeof(xml), "type": "text/xml; charset=\"utf-8\"", ]); } class Prefixed (protected string href_prefix) { MultiStatus get_multi_status() {return MultiStatus::this;} void add_property(string path, string prop_name, void|int(0..0)|string|array(SimpleNode)|SimpleNode| MultiStatusStatus|mapping(string:mixed) prop_value) { MultiStatus::add_property(href_prefix + path, prop_name, prop_value); } void add_status (string path, int status_code, void|string message, mixed... args) { MultiStatus::add_status (href_prefix + path, status_code, message, @args); } void add_namespace (string namespace) { MultiStatus::add_namespace (namespace); } MultiStatus.Prefixed prefix(string href_prefix) { return this_program (this_program::href_prefix + href_prefix); } } MultiStatus.Prefixed prefix (string href_prefix) //! Returns an object with the same @expr{add_*@} methods as this //! one except that @[href_prefix] is implicitly prepended to every //! path. { return Prefixed (href_prefix); } } // Only for protyping and breaking of circularities. protected class PropertySet { string path; RequestID id; Stat get_stat(); mapping(string:string) get_response_headers(); multiset(string) query_all_properties(); string|array(SimpleNode)|mapping(string:mixed) query_property(string prop_name); mapping(string:mixed) start(); void unroll(); void commit(); mapping(string:mixed) set_property(string prop_name, string|array(SimpleNode) value); mapping(string:mixed) set_dead_property(string prop_name, array(SimpleNode) value); mapping(string:mixed) remove_property(string prop_name); mapping(string:mixed) find_properties(string mode, MultiStatus.Prefixed result, multiset(string)|void filt); } //! See @[RoxenModule.check_locks]. enum LockFlag { LOCK_NONE = 0, LOCK_SHARED_BELOW = 2, LOCK_SHARED_AT = 3, LOCK_OWN_BELOW = 4, LOCK_EXCL_BELOW = 6, LOCK_EXCL_AT = 7 }; //! How to handle an existing destination when files or directories //! are moved or copied in a filesystem. enum Overwrite { //! Fail if the destination exists. Corresponds to an Overwrite //! header with the value "F" (RFC 2518 9.6). NEVER_OVERWRITE = -1, //! If the source and destination are directories, overwrite the //! properties only. If the source and destination are files, //! overwrite the file along with the properties. Otherwise fail if //! the destination exists. MAYBE_OVERWRITE = 0, //! If the destination exists then delete it recursively before //! writing the new content. Corresponds to an Overwrite header with //! the value "T" (RFC 2518 9.6). DO_OVERWRITE = 1, }; //! State of the DAV:propertybehavior. //! //! @mixed //! @type int(0..0) //! DAV:omit. //! Failure to copy a property does not cause the entire copy //! to fail. //! @type int(1..1) //! DAV:keepalive "*". //! All live properties must be kept alive. //! @type multiset(string) //! Set of properties to keep alive. Properties not in the set //! should be copied according to best effort. The properties are //! listed with complete namespaces. //! @endmixed typedef int(0..1)|multiset(string) PropertyBehavior; class RoxenModule { inherit BasicDefvar; constant is_module = 1; constant module_type = 0; constant module_unique = 1; LocaleString module_name; LocaleString module_doc; string module_identifier(); string module_local_id(); array(int|string|mapping) register_module(); string file_name_and_stuff(); void start (void|int variable_save, void|Configuration conf, void|int newly_added); //! This function is called both when a module is loaded //! (@[variable_save] is 0) and when its variables are saved after a //! change (@[variable_save] is 2). //! //! @[newly_added] is 1 if the module is being added by the //! administrator through the admin interface (implies that //! @[variable_save] is 0). It's zero if the module is loaded //! normally, i.e. as a result of an entry in the server //! configuration file. //! //! @[conf] is the configuration that the module instance belongs //! to, i.e. the same as the return value from @[my_configuration]. //! //! @note //! A module can't assume that it has been loaded before in this //! server configuration just because @[newly_added] is zero. The //! administrator might for instance have edited the configuration //! file directly. void stop(); //! This function is called when a running module is stopped either //! because it's being dropped or reloaded in the admin interface, //! or the server is being shut down orderly. void ready_to_receive_requests (void|Configuration conf); //! This function is called after all modules in a configuration //! have been loaded and @[start]ed. If a function is added later on //! it's called directly @[start]. //! //! When a configuration is loaded on server start, this function is //! still called before the handler threads are started. //! //! @[conf] is the configuration that the module instance belongs //! to, i.e. the same as the return value from @[my_configuration]. //! //! @note //! This function is intended for things that can't be done in //! @[start] because all modules might not be loaded by then. There //! is no well defined order between calls to //! @[ready_to_receive_requests], so its usefulness diminishes the //! more module that use it. In other words, don't use unless you //! absolutely have to. string query_internal_location(); string query_location(); string|multiset(string) query_provides(); function(RequestID:int|mapping) query_seclevels(); void set_status_for_path (string path, RequestID id, int status_code, string|void message, mixed... args); array(int)|object(Stdio.Stat) stat_file(string f, RequestID id); array(string) find_dir(string f, RequestID id); mapping(string:array(mixed)) find_dir_stat(string f, RequestID id); string real_file(string f, RequestID id); void save(); mapping api_functions(); mapping query_tag_callers(); mapping query_container_callers(); string info(object conf); string comment(); PropertySet|mapping(string:mixed) query_property_set(string path, RequestID id); string|array(SimpleNode)|mapping(string:mixed) query_property(string path, string prop_name, RequestID id); mapping(string:mixed) recurse_find_properties(string path, string mode, int depth, RequestID id, multiset(string)|void filt); mapping(string:mixed) patch_properties(string path, array(PatchPropertyCommand) instructions, RequestID id); mapping(string:mixed) set_property (string path, string prop_name, string|array(SimpleNode) value, RequestID id); mapping(string:mixed) remove_property (string path, string prop_name, RequestID id); string resource_id (string path, RequestID id); string|int authenticated_user_id (string path, RequestID id); multiset(DAVLock) find_locks(string path, int(0..1) recursive, int(0..1) exclude_shared, RequestID id); DAVLock|LockFlag check_locks(string path, int(0..1) recursive, RequestID id); mapping(string:mixed) lock_file(string path, DAVLock lock, RequestID id); mapping(string:mixed) unlock_file (string path, DAVLock lock, RequestID id); mapping(string:mixed)|int(0..1) check_if_header(string relative_path, int(0..1) recursive, RequestID id); mapping(string:mixed)|int(-1..0)|Stdio.File find_file(string path, RequestID id); mapping(string:mixed) recurse_delete_files(string path, RequestID id); mapping(string:mixed) make_collection(string path, RequestID id); mapping(string:mixed) recurse_copy_files(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id); mapping(string:mixed) recurse_move_files(string source, string destination, PropertyBehavior behavior, Overwrite overwrite, RequestID id); } class PatchPropertyCommand { constant command = ""; string property_name; mapping(string:mixed) execute(PropertySet context); } class _roxen { mapping(string:object) variables; constant real_version = ""; object locale; int start_time; array(Configuration) configurations; mixed query(string a); void store(string a, mapping b, int c, object d); mapping(string:mixed) retrieve(string a, object b); void remove(string a, object b); string version(); void dump(string a); void nwrite(string a, int|void b, int|void c, void|mixed ... d); int main(int a, array(string) b); } class AuthModule //! @appears AuthModule //! The interface an authentication module must implement { inherit RoxenModule; constant module_type = MODULE_AUTH; constant thread_safe=1; constant name = "method name"; User authenticate( RequestID id, UserDB db ); //! Try to authenticate the request with users from the specified user //! database. If no @[db] is specified, all datbases in the current //! configuration are searched in order, then the configuration user //! database. mapping authenticate_throw( RequestID id, string realm, UserDB db ); //! Returns a reply mapping, similar to @[Roxen.http_rxml_reply] with //! friends. If no @[db] is specified, all datbases in the current //! configuration are searched in order, then the configuration user //! database. } protected mapping(string:function(void:void)) user_sql_inited = ([]); protected Sql.Sql user_mysql; protected void init_user_sql(string table) { string db = all_constants()->REPLICATE?"replicate":"local"; if( !user_mysql ) user_mysql = master()->resolv("DBManager.get")( db ); if(catch(user_mysql->query( "SELECT module FROM "+ table+" WHERE module=''"))) { user_mysql->query( "CREATE TABLE "+table+" " " (module varchar(30) NOT NULL, " " name varchar(30) NOT NULL, " " user varchar(30) NOT NULL, " " value blob, " " raw int not null, " " INDEX foo (module,name,user))" ); master()->resolv("DBManager.is_module_table")( 0, db, table, "Contains metadata about users. " "Userdatabases can store information here " "at the request of other modules, or they " "can keep their own state in this table" ); } user_sql_inited[ table ]= lambda(){user_mysql = master()->resolv("DBManager.get")( db );}; } //! @appears Group class Group( UserDB database ) { string name(); //! The group name array(string) members() //! All users that are members of this group. The default //! implementation loops over all users handled by the user database //! and looks for users with the same gid as this group, or who is a //! member of it when the groups() method are called. { array res = ({}); User uid; int id = gid(); foreach( database->list_users(), string u ) if( (uid = database->find_user( u )) && ((uid->gid() == id) || has_value(uid->groups(), name()))) res += ({ u }); return res; } int gid(); //! A numerical GID, or -1 if not applicable int set_name( string new_name ) { return 0; } int set_gid( int new_gid ) { return 0; } int set_members( array(string) members ) { return 0; } //! Returns 1 if it was possible to set the variable. } #ifdef THREADS protected Thread.Mutex mutex = Thread.Mutex(); #endif //! @appears User class User( UserDB database ) { protected string table; string name(); //! The user (short) name string real_name(); //! The real name of the user int password_authenticate(string password) //! Return 1 if the password is correct, 0 otherwise. The default //! implementation uses the crypted_password() method. { string c = crypted_password(); return !sizeof(c) || crypt(password, c); } int uid(); //! A numerical UID, or -1 if not applicable int gid(); //! A numerical GID, or -1 if not applicable string shell(); //! The shell, or 0 if not applicable string gecos() //! The gecos field, defaults to return the real name { return real_name(); } string homedir(); string crypted_password() { return "x"; } //! Used by compat_userinfo(). The default implementation returns "x" array(string) groups() //! Return all groups this user is a member in. The default //! implementation returns ({}) { return ({}); } int set_name(string name) {} int set_real_name(string rname) {} int set_uid(int uid) {} int set_gid(int gid) {} int set_shell(string shell) {} int set_gecos(string gecos) {} int set_homedir(string hodir) {} int set_crypted_password(string passwd) {} int set_password(string passwd) {} //! Returns 1 if it was possible to set the variable. array compat_userinfo( ) //! Return a unix passwd compatible array with user information. The //! defualt implementation uses the other methods to assemble this //! information. //! //! Basically: //! return ({ name(), crypted_password(), //! uid(), gid(), gecos(), homedir(), //! shell() }); { return ({name(),crypted_password(),uid(),gid(),gecos(),homedir(),shell()}); } #define INIT_SQL() do{ \ if(!table) table = replace(database->my_configuration()->name," ","_")+"_user_variables"; \ if(!user_sql_inited[ table ] )init_user_sql( table );else user_sql_inited[ table ](); \ } while( 0 ) #ifdef THREADS #define LOCK() mixed ___key = mutex->lock() #else #define LOCK() #endif protected string module_name( RoxenModule module ) { if( !module ) // NULL does not work together with indexes, but this is // not a valid modulename, so it's not a problem. return "'0'"; else return replace("'"+user_mysql->quote(module->sname())+"'","%","%%"); } mixed set_var( RoxenModule module, string index, mixed value ) //! Set a specified variable in the user. If @[value] is a string, //! it's stored as is in the database, otherwise it's encoded using //! encode_value before it's stored. Returns the value. //! //! You can use 0 for the @[module] argument. //! //! The default implementation stores the value in a mysql table //! '*_user_data' in the 'shared' database. //! //! Use @[get_var] to retrieve the value, and @[delete_var] to //! delete it. { delete_var( module, index ); mixed oval = value; LOCK(); INIT_SQL(); int encoded; if( stringp( value ) ) value = string_to_utf8( value ); else { value = encode_value( value ); encoded = 1; } user_mysql->query( "INSERT INTO "+table+" (module,name,user,value,raw) " "VALUES ("+module_name( module )+", %s, %s, %s, %d)", index, name(), value, encoded ); return oval; } mixed get_var( RoxenModule module, string index ) //! Return the value of a variable previously set with @[set_var] { array rows; LOCK(); INIT_SQL(); rows = user_mysql->query( "SELECT * FROM "+table+ " WHERE module="+module_name( module ) +" AND name=%s AND user=%s", index, name() ); if( !sizeof( rows ) ) return 0; mapping m = rows[0]; if( (int)m->raw ) return decode_value( m->value ); return utf8_to_string( m->value ); } void delete_var( RoxenModule module, string index ) //! Delete a variable previously created with @[set_var] { LOCK(); INIT_SQL(); user_mysql->query( "DELETE FROM "+table+" WHERE (module="+ module_name( module )+ " AND name=%s AND user=%s)", index, name() ); } #undef INIT_SQL #undef LOCK } class UserDB //! @appears UserDB //! The interface a UserDB module must implement. { inherit RoxenModule; constant module_type = MODULE_USERDB; constant thread_safe=1; constant name = "db name"; User find_user( string s, RequestID|void id ); //! Find a user User find_user_from_uid( int uid, RequestID|void id ) //! Find a user given a UID. The default implementation loops over //! list_users() and checks the uid() of each one. { User user; foreach( list_users(), string u ) if( (user = find_user( u )) && (user->uid() == uid) ) return user; } Group find_group( string group, RequestID|void id ) //! Find a group object given a group name. //! The default implementation returns 0. { } Group find_group_from_gid( int gid, RequestID|void id ) //! Find a group given a GID. The default implementation loops over //! list_groups() and checks the gid() of each one. { Group group; foreach( list_groups(), string u ) if( (group = find_group( u )) && (group->gid() == gid) ) return group; } array(string) list_groups( RequestID|void id ) //! Return a list of all groups handled by this database module. //! The default implementation returns the empty array. { return ({}); } array(string) list_users( RequestID|void id ); //! Return a list of all users handled by this database module. User create_user( string s ) //! Not necessarily implemented, as an example, it's not possible to //! create users in the system user database from Roxen WebServer. //! The default implementation returns 0. { return 0; } Group create_group( string s ) //! Not necessarily implemented, as an example, it's not possible to //! create groups in the system user database from Roxen WebServer. //! The default implementation returns 0. { return 0; } }

Roxen.git/ server/ base_server/ prototypes.pike > 9694ab016ea025e80b5790edf863bbf5d25ccc38 [Annotate]