Roxen.git/server/etc/modules/Roxen.pmod:9a2864e4aa152d820a4d66f3faecc1600c49c119

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6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 // This is a roxen pike module. Copyright © 1999 - 2009, Roxen IS. // // $Id$ #include <roxen.h> #include <config.h> #include <version.h> #include <module.h> #include <stat.h> #define roxen roxenp() #ifdef HTTP_DEBUG # define HTTP_WERR(X) report_debug("HTTP: "+X+"\n"); #else # define HTTP_WERR(X) #endif // Tell Pike.count_memory this is global. constant pike_cycle_depth = 0; // Error handling tools enum OnError { THROW_INTERNAL = 0, //! Throw a generic error. THROW_RXML, //! Throw an RXML run error. LOG_ERROR, //! Log the error and return @expr{0@} (zero). RETURN_ZERO, //! Return @expr{0@} (zero). }; //! Flags to control the error handling in various functions taking an //! argument of this type. //! //! Typical use is as an argument to a function that in turn //! calls @[raise_err()] in order to handle an error. //! //! @note //! This covers only specific types of errors that the function might //! generate. Other errors might throw internal exceptions or return //! zero. See the function docs. //! //! @seealso //! @[raise_err()] int(0..0) raise_err (OnError on_error, sprintf_format msg, sprintf_args... args) //! Trig an error according to @[on_error]. //! //! Typical use is as an expression in a @expr{return@} statement. //! //! @param on_error //! Method to signal the error: //! @int //! @value THROW_INTERNAL //! Throw a generic exception (@expr{"internal server error"@}). //! Use this for error conditions that never should //! happen if the code is correct. This is the default. //! //! @value THROW_RXML //! Throw the error as a RXML run error. //! Convenient in rxml tag implementations. //! //! @value LOG_ERROR //! Print a message using @[report_error] and //! return @expr{0@} (zero). //! //! @value RETURN_ZERO //! Just return @expr{0@} (zero). //! @endint //! //! @param msg //! Error message. //! //! @param args //! @[sprintf()] parameters for @[msg] (if any). //! //! @returns //! If the function returns, it will always be the //! value @expr{0@} (zero). //! //! @seealso //! @[OnError] { switch(on_error) { case LOG_ERROR: report_error(msg, @args); break; case RETURN_ZERO: break; case THROW_RXML: RXML.run_error(msg, @args); default: error(msg, @args); } return 0; } // Thunks to be able to access the cache from here, since this module // is compiled and instantiated before cache.pike. function cache_lookup = lambda (mixed... args) { return (cache_lookup = all_constants()["cache_lookup"]) (@args); }; function cache_set = lambda (mixed... args) { return (cache_set = all_constants()["cache_set"]) (@args); }; function cache_remove = lambda (mixed... args) { return (cache_remove = all_constants()["cache_remove"]) (@args); }; object|array(object) parse_xml_tmpl( string ttag, string itag, string xml_file, string|void ident ) { string tmpl; array(mapping) data = ({}); Parser.HTML p = Parser.HTML(); object apply_template( mapping data ) { Parser.HTML p = Parser.HTML(); p->ignore_tags( 1 ); p->_set_entity_callback( lambda( Parser.HTML p, string ent ) { string enc = "none"; sscanf( ent, "&%s;", ent ); sscanf( ent, "%s:%s", ent, enc ); sscanf( ent, "_.%s", ent ); switch( enc ) { case "none": return data[ ent ]; case "int": return (string)(int)data[ ent ]; case "float": return (string)(float)data[ ent ]; case "string": default: return sprintf("%O", data[ent] ); } } ); string code = p->feed( tmpl )->finish()->read(); p = 0; // To avoid trampoline garbage. return compile_string( code, xml_file )(); }; p->xml_tag_syntax( 2 ); p->add_quote_tag ("!--", "", "--"); p->add_container( ttag, lambda( Parser.HTML p, mapping m, string c ) { tmpl = c; } ); p->add_container( itag, lambda( Parser.HTML p, mapping m, string c ) { string current_tag; mapping row = m; void got_tag( Parser.HTML p, string c ) { sscanf( c, "<%s>", c ); if( c[0] == '/' ) current_tag = 0; else current_tag = c; }; void got_data( Parser.HTML p, string c ) { if( current_tag ) if( row[current_tag] ) row[current_tag] += html_decode_string(c); else row[current_tag] = html_decode_string(c); }; p = Parser.HTML( ); p->xml_tag_syntax( 2 ); p->add_quote_tag ("!--", "", "--") ->_set_tag_callback( got_tag ) ->_set_data_callback( got_data ) ->feed( c ) ->finish(); data += ({ row }); p = 0; // To avoid trampoline garbage. } ) ->feed( Stdio.read_file( xml_file ) ) ->finish(); p = 0; // To avoid trampoline garbage. if( ident ) { foreach( data, mapping m ) if( m->ident == ident ) return apply_template( m ); return 0; } return map( data, apply_template ); } object|array(object) parse_box_xml( string xml_file, string|void ident ) { return parse_xml_tmpl( "template", "box", xml_file, ident ); } int ip_to_int(string ip) { int res; foreach(((ip/".") + ({ "0", "0", "0" }))[..3], string num) res = (res<<8) | (int)num; return res; } string http_roxen_config_cookie(string from) { return "RoxenConfig="+http_encode_cookie(from) +"; expires=" + http_date (3600*24*365*2 + time (1)) + "; path=/"; } string http_roxen_id_cookie(void|string unique_id) { return "RoxenUserID=" + (unique_id || roxen->create_unique_id()) + "; expires=" + http_date (3600*24*365*2 + time (1)) + "; path=/"; } protected mapping(string:function(string, RequestID:string)) cookie_callbacks = ([]); protected class CookieChecker(string cookie) { string `()(string path, RequestID id) { if (!id->real_cookies) { id->init_cookies(); } // Note: Access the real_cookies directly to avoid registering callbacks. return id->real_cookies[cookie]; } string _sprintf(int c) { return c == 'O' && sprintf("CookieChecker(%O)", cookie); } } function(string, RequestID:string) get_cookie_callback(string cookie) { function(string, RequestID:string) cb = cookie_callbacks[cookie]; if (cb) return cb; cb = CookieChecker(cookie); return cookie_callbacks[cookie] = cb; } protected mapping(string:function(string, RequestID:string)) lang_callbacks = ([ ]); protected class LangChecker(multiset(string) known_langs, string header, string extra) { string `()(string path, RequestID id) { string proto_key = ""; switch (header) { case "accept-language": // Make sure the Accept-Language header has been parsed for this request PrefLanguages pl = id->misc->pref_languages; if (!pl) { id->init_pref_languages(); pl = id->misc->pref_languages; } proto_key = filter(pl->get_languages(), known_langs) * ","; break; case "cookie": if (!id->real_cookies) id->init_cookies(); // Avoid cookie jar tracking if (string cookie_val = id->real_cookies[extra]) { if (known_langs[cookie_val]) proto_key = cookie_val; } break; } return proto_key; } string _sprintf(int c) { return (c == 'O') && sprintf("LangChecker(%O,%O,%O)", indices(known_langs) * "+", header, extra); } } function(string, RequestID:string) get_lang_vary_cb(multiset(string) known_langs, string header, string extra) { string key = sort(indices(known_langs)) * "+" + "|" + header + "|" + extra; return lang_callbacks[key] || (lang_callbacks[key] = LangChecker(known_langs, header, extra)); } //! Return id->remoteaddr. //! //! Useful to use with @[RequestID()->register_vary_callback()]. string get_remoteaddr(string ignored, RequestID id) { return id->remoteaddr; } // These five functions are questionable, but rather widely used. string msectos(int t) { if(t<1000) // One sec. { return sprintf("0.%02d sec", t/10); } else if(t<6000) { // One minute return sprintf("%d.%02d sec", t/1000, (t%1000 + 5) / 10); } else if(t<3600000) { // One hour return sprintf("%d:%02d m:s", t/60000, (t%60000)/1000); } return sprintf("%d:%02d h:m", t/3600000, (t%3600000)/60000); } string decode_mode(int m) { string s; s=""; if(S_ISLNK(m)) s += "Symbolic link"; else if(S_ISREG(m)) s += "File"; else if(S_ISDIR(m)) s += "Dir"; else if(S_ISSOCK(m)) s += "Socket"; else if(S_ISFIFO(m)) s += "FIFO"; else if((m&0xf000)==0xd000) s+="Door"; else if(S_ISBLK(m)) s += "Device"; else if(S_ISCHR(m)) s += "Special"; else s+= "Unknown"; s+=", "; if(S_ISREG(m) || S_ISDIR(m)) { s+="<tt>"; if(m&S_IRUSR) s+="r"; else s+="-"; if(m&S_IWUSR) s+="w"; else s+="-"; if(m&S_IXUSR) s+="x"; else s+="-"; if(m&S_IRGRP) s+="r"; else s+="-"; if(m&S_IWGRP) s+="w"; else s+="-"; if(m&S_IXGRP) s+="x"; else s+="-"; if(m&S_IROTH) s+="r"; else s+="-"; if(m&S_IWOTH) s+="w"; else s+="-"; if(m&S_IXOTH) s+="x"; else s+="-"; s+="</tt>"; } else { s+="--"; } return s; } mapping(string:mixed) add_http_header(mapping(string:mixed) to, string name, string value) //! Adds a header @[name] with value @[value] to the header style //! mapping @[to] (which commonly is @tt{id->defines[" _extra_heads"]@}) //! if no header with that value already exist. //! //! @note //! This function doesn't notify the RXML p-code cache, which makes it //! inappropriate to use for updating @tt{id->defines[" _extra_heads"]@} //! in RXML tags (which has been its primary use). Use //! @[RequestID.add_response_header] instead. { if(to[name]) { if(arrayp(to[name])) { if (search(to[name], value) == -1) to[name] += ({ value }); } else { if (to[name] != value) to[name] = ({ to[name], value }); } } else to[name] = value; return to; } mapping(string:mixed) merge_http_headers (mapping(string:mixed) a, mapping(string:mixed) b) //! Merges two response header mappings as if @[add_http_header] was //! called for @[a] with every header in @[b], except that it isn't //! destructive on @[a]. { mapping(string:mixed) res = a ^ b; foreach (a & b; string name;) { string|array(string) a_val = a[name], b_val = b[name]; if (a_val == b_val) // Shortcut for the string case (usually). This also ensures // that same-string values don't become arrays with a single // element. res[name] = a_val; else { if (!arrayp (a_val)) a_val = ({a_val}); if (!arrayp (b_val)) b_val = ({b_val}); res[name] = a_val | b_val; } } return res; } int is_mysql_keyword( string name ) //! Return true if the argument is a mysql keyword. //! Not in DBManager due to recursive module dependencies. { return (< "action", "add", "aggregate", "all", "alter", "after", "and", "as", "asc", "avg", "avg_row_length", "auto_increment", "between", "bigint", "bit", "binary", "blob", "bool", "both", "by", "cascade", "case", "char", "character", "change", "check", "checksum", "column", "columns", "comment", "constraint", "create", "cross", "current_date", "current_time", "current_timestamp", "data", "database", "databases", "date", "datetime", "day", "day_hour", "day_minute", "day_second", "dayofmonth", "dayofweek", "dayofyear", "dec", "decimal", "default", "delayed", "delay_key_write", "delete", "desc", "describe", "distinct", "distinctrow", "double", "drop", "end", "else", "escape", "escaped", "enclosed", "enum", "explain", "exists", "fields", "file", "first", "float", "float4", "float8", "flush", "foreign", "from", "for", "full", "function", "global", "grant", "grants", "group", "having", "heap", "high_priority", "hour", "hour_minute", "hour_second", "hosts", "identified", "ignore", "in", "index", "infile", "inner", "insert", "insert_id", "int", "integer", "interval", "int1", "int2", "int3", "int4", "int8", "into", "if", "is", "isam", "join", "key", "keys", "kill", "last_insert_id", "leading", "left", "length", "like", "lines", "limit", "load", "local", "lock", "logs", "long", "longblob", "longtext", "low_priority", "max", "max_rows", "match", "mediumblob", "mediumtext", "mediumint", "middleint", "min_rows", "minute", "minute_second", "modify", "month", "monthname", "myisam", "natural", "numeric", "no", "not", "null", "on", "optimize", "option", "optionally", "or", "order", "outer", "outfile", "pack_keys", "partial", "password", "precision", "primary", "procedure", "process", "processlist", "privileges", "read", "real", "references", "reload", "regexp", "rename", "replace", "restrict", "returns", "revoke", "rlike", "row", "rows", "second", "select", "set", "show", "shutdown", "smallint", "soname", "sql_big_tables", "sql_big_selects", "sql_low_priority_updates", "sql_log_off", "sql_log_update", "sql_select_limit", "sql_small_result", "sql_big_result", "sql_warnings", "straight_join", "starting", "status", "string", "table", "tables", "temporary", "terminated", "text", "then", "time", "timestamp", "tinyblob", "tinytext", "tinyint", "trailing", "to", "type", "use", "using", "unique", "unlock", "unsigned", "update", "usage", "values", "varchar", "variables", "varying", "varbinary", "with", "write", "when", "where", "year", "year_month", "zerofill", >)[ name ]; } string short_name(string|Configuration long_name) //! Given either a long name or a Configuration object, return a short //! (no longer than 20 characters) identifier. //! //! This function also does Unicode normalization and removes all //! 'non-character' characters from the name. The string is then //! utf8-encoded. { string id; if( objectp( long_name ) ) { if( !long_name->name ) error("Illegal first argument to short_name.\n" "Expected Configuration object or string\n"); long_name = long_name->name; } id = Unicode.split_words_and_normalize( lower_case(long_name) )*"_"; if( strlen( id ) > 20 ) id = (id[..16]+"_"+hash(id)->digits(36))[..19]; if( !strlen( id ) ) id = hash(long_name)->digits(36); if( is_mysql_keyword( id ) ) return "x"+id[..19]; while( strlen(string_to_utf8( id )) > 20 ) id = id[..strlen(id)-2]; return string_to_utf8( id ); } int _match(string w, array (string) a) { if(!stringp(w)) // Internal request.. return -1; foreach(a, string q) if(stringp(q) && strlen(q) && glob(q, w)) return 1; } string canonicalize_http_header (string header) //! Returns the given http header on the canonical capitalization form //! as given in RFC 2616. E.g. @expr{"content-type"@} or //! @expr{"CONTENT-TYPE"@} is returned as @expr{"Content-Type"@}. //! Returns zero if the given string isn't a known http header. //! //! @seealso //! @[RequestID.add_response_header] { return ([ // RFC 2616 section 4.5: General Header Fields "cache-control": "Cache-Control", "connection": "Connection", "date": "Date", "pragma": "Pragma", "trailer": "Trailer", "transfer-encoding": "Transfer-Encoding", "upgrade": "Upgrade", "via": "Via", "warning": "Warning", // RFC 2616 section 5.3: Request Header Fields "accept": "Accept", "accept-charset": "Accept-Charset", "accept-encoding": "Accept-Encoding", "accept-language": "Accept-Language", "authorization": "Authorization", "expect": "Expect", "from": "From", "host": "Host", "if-match": "If-Match", "if-modified-since": "If-Modified-Since", "if-none-match": "If-None-Match", "if-range": "If-Range", "if-unmodified-since": "If-Unmodified-Since", "max-forwards": "Max-Forwards", "proxy-authorization": "Proxy-Authorization", "range": "Range", "referer": "Referer", "te": "TE", "user-agent": "User-Agent", // RFC 2616 section 6.2: Response Header Fields "accept-ranges": "Accept-Ranges", "age": "Age", "etag": "ETag", "location": "Location", "proxy-authenticate": "Proxy-Authenticate", "retry-after": "Retry-After", "server": "Server", "vary": "Vary", "www-authenticate": "WWW-Authenticate", // RFC 2616 section 7.1: Entity Header Fields "allow": "Allow", "content-encoding": "Content-Encoding", "content-language": "Content-Language", "content-length": "Content-Length", "content-location": "Content-Location", "content-md5": "Content-MD5", "content-range": "Content-Range", "content-type": "Content-Type", "expires": "Expires", "last-modified": "Last-Modified", // The obsolete RFC 2068 defined this header for compatibility (19.7.1.1). "keep-alive": "Keep-Alive", // RFC 2965 "cookie": "Cookie", "cookie2": "Cookie2", "set-cookie2": "Set-Cookie2", ])[lower_case (header)]; } mapping(string:mixed) http_low_answer( int status_code, string data ) //! Return a result mapping with the specified HTTP status code and //! data. @[data] is sent as the content of the response and is //! tagged as text/html. //! //! @note //! The constants in @[Protocols.HTTP] can be used for status codes. { if(!data) data=""; HTTP_WERR("Return code "+status_code+" ("+data+")"); return ([ "error" : status_code, "data" : data, "len" : strlen( data ), "type" : "text/html", ]); } mapping(string:mixed) http_status (int status_code, void|string message, mixed... args) //! Return a response mapping with the specified HTTP status code and //! optional message. As opposed to @[http_low_answer], the message is //! raw text which can be included in more types of responses, e.g. //! inside multistatus responses in WebDAV. 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. //! //! If @[args] is given, @[message] is taken as an @[sprintf] style //! format which is applied to them. { if (message) { if (sizeof (args)) message = sprintf (message, @args); HTTP_WERR ("Return status " + status_code + " " + message); return (["error": status_code, "rettext": message]); } else { HTTP_WERR ("Return status " + status_code); return (["error": status_code]); } } mapping(string:mixed) http_method_not_allowed ( string allowed_methods, void|string message, mixed... args) //! Make a HTTP 405 method not allowed response with the required //! Allow header containing @[allowed_methods], which is a comma //! separated list of HTTP methods, e.g. @expr{"GET, HEAD"@}. { mapping(string:mixed) response = http_status (Protocols.HTTP.HTTP_METHOD_INVALID, message, @args); response->extra_heads = (["Allow": allowed_methods]); return response; } //! Returns a response mapping indicating that the module or script //! will take over the rest of the handling of the request. This //! aborts the request chain and leaves you in control for as long as //! you wish. //! //! Typically, you'll want to return the control again by sending a //! new result mapping to @[RequestID.send_result()], but should you //! want to glue together request headers and close the socket on your //! own, you are free to do so. The method @[RequestID.connection()] //! gives you the Stdio.File object for the current client connection. mapping(string:mixed) http_pipe_in_progress() { HTTP_WERR("Pipe in progress"); return ([ "file":-1, "pipe":1, ]); } mapping(string:mixed) http_rxml_answer( string rxml, RequestID id, void|Stdio.File file, void|string type ) //! Convenience functions to use in Roxen modules. When you just want //! to return a string of data, with an optional type, this is the //! easiest way to do it if you don't want to worry about the internal //! roxen structures. { rxml = ([function(string,RequestID,Stdio.File:string)]id->conf->parse_rxml) (rxml, id, file); HTTP_WERR("RXML answer ("+(type||"text/html")+")"); return (["data":rxml, "type":(type||"text/html"), "stat":id->misc->defines[" _stat"], "error":id->misc->defines[" _error"], "rettext":id->misc->defines[" _rettext"], "extra_heads":id->misc->defines[" _extra_heads"], ]); } mapping(string:mixed) http_try_again( float delay ) //! Causes the request to be retried in @[delay] seconds. { return ([ "try_again_later":delay ]); } protected class Delayer { RequestID id; int resumed; void resume( ) { if( resumed ) return; remove_call_out( resume ); resumed = 1; if( !id ) error("Cannot resume request -- connection close\n"); roxenp()->handle( id->handle_request ); id = 0; // free the reference. } void create( RequestID _id, float max_delay ) { id = _id; if( max_delay && max_delay > 0.0 ) call_out( resume, max_delay ); } } array(object|mapping) http_try_resume( RequestID id, float|void max_delay ) //! Returns an object and a return mapping. //! Call 'retry' in the object to resume the request. //! Please note that this will cause your callback to be called again. //! An optional maximum delay time can be specified. //! //! @example //! void first_try( RequestID id ) //! { //! if( !id->misc->has_logged_in ) //! { //! [object key, mapping result] = Roxen.http_try_resume( id, 10.0 ); //! void do_the_work( ) //! { //! id->misc->have_logged_in = "no"; //! if( connect_to_slow_id_host_and_get_login( id ) ) //! id->misc->have_logged_in = "yes"; //! key->resume(); //! }; //! thread_create( do_the_work, key ); //! return result; //! } //! } { Delayer delay = Delayer( id, max_delay ); return ({delay, ([ "try_again_later":delay ]) }); } mapping(string:mixed) http_string_answer(string text, string|void type) //! Generates a result mapping with the given text as the request body //! with a content type of `type' (or "text/html" if none was given). { HTTP_WERR("String answer ("+(type||"text/html")+")"); return ([ "data":text, "type":(type||"text/html") ]); } mapping(string:mixed) http_file_answer(Stdio.File text, string|void type, void|int len) //! Generate a result mapping with the given (open) file object as the //! request body, the content type defaults to text/html if none is //! given, and the length to the length of the file object. { HTTP_WERR("file answer ("+(type||"text/html")+")"); return ([ "file":text, "type":(type||"text/html"), "len":len ]); } protected constant months = ({ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }); protected constant days = ({ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }); string log_date(int t) { mapping(string:int) lt = localtime(t); return(sprintf("%04d-%02d-%02d", 1900+lt->year,lt->mon+1, lt->mday)); } string log_time(int t) { mapping(string:int) lt = localtime(t); return(sprintf("%02d:%02d:%02d", lt->hour, lt->min, lt->sec)); } // CERN date formatter. Note similar code in LogFormat in roxen.pike. protected int chd_lt; protected string chd_lf; string cern_http_date(int t) //! Return a date, formated to be used in the common log format { if( t == chd_lt ) // Interpreter lock assumed here. return chd_lf; string c; mapping(string:int) lt = localtime(t); int tzh = lt->timezone/3600; if(tzh > 0) c="-"; else { tzh = -tzh; c="+"; } c = sprintf("%02d/%s/%04d:%02d:%02d:%02d %s%02d00", lt->mday, months[lt->mon], 1900+lt->year, lt->hour, lt->min, lt->sec, c, tzh); chd_lt = t; // Interpreter lock assumed here. chd_lf = c; return c; } constant http_status_messages = ([ 100:"Continue", 101:"Switching Protocols", 102:"Processing", 200:"OK", 201:"Created", // URI follows 202:"Accepted", 203:"Non-Authoritative Information", // Provisional Information 204:"No Content", 205:"Reset Content", 206:"Partial Content", // Byte Ranges 207:"Multi-Status", 226:"IM Used", // RFC 3229 300:"Multiple Choices", // Moved 301:"Moved Permanently", // Permanent Relocation 302:"Found", 303:"See Other", 304:"Not Modified", 305:"Use Proxy", // RFC 2616 10.3.7: 306 not used but reserved. 307:"Temporary Redirect", 400:"Bad Request", 401:"Unauthorized", // Access denied 402:"Payment Required", 403:"Forbidden", 404:"Not Found", // No such file or directory 405:"Method Not Allowed", 406:"Not Acceptable", 407:"Proxy Authentication Required", // Proxy authorization needed 408:"Request Timeout", 409:"Conflict", 410:"Gone", // This document is no more. It has gone to meet its creator. It is gone. It will not be back. Give up. I promise. There is no such file or directory.", 411:"Length Required", 412:"Precondition Failed", 413:"Request Entity Too Large", 414:"Request-URI Too Long", 415:"Unsupported Media Type", 416:"Requested Range Not Satisfiable", 417:"Expectation Failed", 418:"I'm a teapot", // FIXME: What is 419? 420:"Server temporarily unavailable", 421:"Server shutting down at operator request", 422:"Unprocessable Entity", 423:"Locked", 424:"Failed Dependency", 500:"Internal Server Error.", 501:"Not Implemented", 502:"Bad Gateway", // Gateway Timeout 503:"Service Unavailable", 504:"Gateway Timeout", 505:"HTTP Version Not Supported", 506:"Variant Also Negotiates", 507:"Insufficient Storage", ]); string http_status_message (int status_code) //! Returns the standard message that corresponds to the given HTTP //! status code. { return http_status_messages[status_code]; } string http_date( mixed t ) //! Returns a http_date, as specified by the HTTP-protocol standard. //! This is used for logging as well as the Last-Modified and Time //! headers in the reply. { mapping(string:int) l = gmtime( (int)t ); return(sprintf("%s, %02d %s %04d %02d:%02d:%02d GMT", days[l->wday], l->mday, months[l->mon], 1900+l->year, l->hour, l->min, l->sec)); } string parse_http_response (string response, void|mapping(string:mixed) response_map, void|mapping(string:string) headers, void|int|string on_error) //! Parses a raw http response and converts it to a response mapping //! suitable to return from @[RoxenModule.find_file] etc. //! //! The charset, if any is found, is used to decode the body. If a //! charset isn't found in the Content-Type header, some heuristics is //! used on the body to try to find one. //! //! @param response //! The raw http response message, starting with formatted headers //! that are terminated by an empty line. //! //! @param response_map //! If this is set, it's filled in as a response mapping. The body //! of the response is included in @expr{@[response_map]->data@}. //! //! @param headers //! If this is set, it's filled in with all the http headers from //! the response. The indices are lowercased, but otherwise the //! headers aren't processed much (see also @[_Roxen.HeaderParser]). //! //! @param on_error //! What to do if a parse error occurs. Throws a normal error if //! zero, throws an RXML run error if 1, or ignores it and tries to //! recover if -1. If it's a string then it's logged in the debug //! log with the string inserted to explain the context. //! //! @returns //! Returns the body of the response message, with charset decoded if //! applicable. { array parsed = Roxen.HeaderParser()->feed (response); if (!parsed) { string err_msg = "Could not find http headers.\n"; if (stringp (on_error)) werror ("Error parsing http response%s: %s", on_error != "" ? " " + on_error : "", err_msg); else if (on_error == 0) error (err_msg); else if (on_error == 1) RXML.run_error (err_msg); return response; } mapping(string:string) hdr = parsed[2]; if (headers) foreach (hdr; string name; string val) headers[name] = val; return low_parse_http_response (hdr, parsed[0], response_map, on_error); } string low_parse_http_response (mapping(string:string) headers, string body, void|mapping(string:mixed) response_map, void|int|string on_error, void|int(0..1) ignore_unknown_ce) //! Similar to @[parse_http_response], but takes a http response //! message that has been split into headers in @[headers] and the //! message body in @[body]. //! //! The indices in @[headers] are assumed to be in lower case. //! //! @param ignore_unknown_ce //! If set, unknown Content-Encoding headers will be ignored and //! parsing will continue on the verbatim body data. { string err_msg; proc: { if (response_map) { if (string lm = headers["last-modified"]) // Let's just ignore parse errors in the date. response_map->last_modified = parse_since (lm)[0]; } string type, subtype, charset; if (string ct = headers["content-type"]) { // Use the MIME module to parse the Content-Type header. It // doesn't need the data. MIME.Message m = MIME.Message ("", (["content-type": ct]), 0, 1); type = m->type; subtype = m->subtype; charset = m->charset; if (charset == "us-ascii" && !has_value (lower_case (ct), "us-ascii")) // MIME.Message is a bit too "convenient" and defaults to // "us-ascii" if no charset is specified. charset = 0; if (response_map) response_map->type = type + "/" + subtype; } if (string ce = headers["content-encoding"]) { switch(lower_case(ce)) { case "gzip": { Stdio.FakeFile f = Stdio.FakeFile(body, "rb"); Gz.File gz = Gz.File(f, "rb"); body = gz->read(); } break; case "deflate": body = Gz.inflate(-15)->inflate(body); break; default: if (!ignore_unknown_ce) { err_msg = sprintf("Content-Encoding %O not supported.\n", ce); break proc; } } } if (!charset) { // Guess the charset from the content. Adapted from insert#href, // insert#cached-href and SiteBuilder.pmod. if (type == "text" || (type == "application" && (subtype == "xml" || has_prefix (subtype || "", "xml-")))) { if (subtype == "html") { Parser.HTML parser = Parser.HTML(); parser->case_insensitive_tag(1); parser->lazy_entity_end(1); parser->ignore_unknown(1); parser->match_tag(0); parser->add_quote_tag ("!--", "", "--"); parser->add_tag ( "meta", lambda (Parser.HTML p, mapping m) { string val = m->content; if(val && m["http-equiv"] && lower_case(m["http-equiv"]) == "content-type") { MIME.Message m = MIME.Message ("", (["content-type": val]), 0, 1); charset = m->charset; if (charset == "us-ascii" && !has_value (lower_case (val), "us-ascii")) charset = 0; throw (0); // Done. } }); if (mixed err = catch (parser->finish (body))) { err_msg = describe_error (err); break proc; } } else if (subtype == "xml" || has_prefix (subtype || "", "xml-")) { // Look for BOM, then an xml header. The BOM is stripped off // since we use it to decode the data here. if (sscanf (body, "\xef\xbb\xbf%s", body)) charset = "utf-8"; else if (sscanf (body, "\xfe\xff%s", body)) charset = "utf-16"; else if (sscanf (body, "\xff\xfe\x00\x00%s", body)) charset = "utf-32le"; else if (sscanf (body, "\xff\xfe%s", body)) charset = "utf-16le"; else if (sscanf (body, "\x00\x00\xfe\xff%s", body)) charset = "utf-32"; else if (sizeof(body) > 6 && has_prefix(body, "<?xml") && Parser.XML.isspace(body[5]) && sscanf(body, "<?%s?>", string hdr)) { hdr += "?"; if (sscanf(lower_case(hdr), "%*sencoding=%s%*[\n\r\t ?]", string xml_enc) == 3) charset = xml_enc - "'" - "\""; } } } } // FIXME: Parse away BOM in xml documents also when the charset // already is known. if (charset) { Charset.Decoder decoder; if (mixed err = catch (decoder = Charset.decoder (charset))) { err_msg = sprintf ("Unrecognized charset %q.\n", charset); break proc; } if (mixed err = catch (body = decoder->feed (body)->drain())) { if (objectp (err) && err->is_charset_decode_error) { err_msg = describe_error (err); break proc; } throw (err); } } if (response_map) response_map->data = body; return body; } // Get here on error. if (stringp (on_error)) werror ("Error parsing http response%s: %s", on_error != "" ? " " + on_error : "", err_msg); else if (on_error == 0) error (err_msg); else if (on_error == 1) RXML.run_error ("Error parsing http response: " + err_msg); return body; } //! Returns a timestamp formatted according to ISO 8601 Date and Time //! RFC 2518 23.2. No fraction, UTC only. string iso8601_date_time(int ts, int|void ns) { mapping(string:int) gmt = gmtime(ts); if (zero_type(ns)) { return sprintf("%04d-%02d-%02dT%02d:%02d:%02dZ", 1900 + gmt->year, gmt->mon+1, gmt->mday, gmt->hour, gmt->min, gmt->sec); } return sprintf("%04d-%02d-%02dT%02d:%02d:%02d.%09dZ", 1900 + gmt->year, gmt->mon+1, gmt->mday, gmt->hour, gmt->min, gmt->sec, ns); } #if !defined (MODULE_DEBUG) || \ defined (ENABLE_INHERENTLY_BROKEN_HTTP_ENCODE_STRING_FUNCTION) // Since http_encode_string is broken by design we don't define it in // module debug mode, so that modules still using it can be detected // easily during compilation. If you for some reason choose to // disregard the STRONG deprecation of this function, then you can use // the other define above to always enable it. string http_encode_string(string f) //! Encode dangerous characters in a string so that it can be used as //! a URL. Specifically, nul, space, tab, newline, linefeed, %, ' and //! " are quoted. //! //! @note //! This function is STRONGLY deprecated since using it almost //! invariably leads to incorrect encoding: It doesn't encode URI //! special chars like "/", ":", "?" etc, presumably with the //! intention to be used on an entire URI string. Still, since it //! encodes "%", that URI string can't contain any prior encoded chars //! from the URI component strings. Thus, the result is that "%" //! easily gets incorrectly double-encoded with this function. //! //! Either use @[http_encode_url] to encode the URI component strings //! before they are pasted together to the complete URI, or use //! @[http_encode_invalids] on the complete URI to only encode any //! chars that can't occur raw in the HTTP protocol. { return replace(f, ({ "\000", " ", "\t", "\n", "\r", "%", "'", "\"" }), ({"%00", "%20", "%09", "%0A", "%0D", "%25", "%27", "%22"})); } #endif string http_encode_invalids (string f) //! Encode dangerous chars to be included as a URL in an HTTP message //! or header field. This includes control chars, space and the quote //! chars @expr{'@} and @expr{"@}. Note that chars allowed in a quoted //! string (RFC 2616 section 2.2) are not encoded. This function may //! be used on a complete URI since it doesn't encode any URI special //! chars, including the escape char @expr{%@}. //! //! @note //! Eight bit chars and wider are encoded using UTF-8 followed by http //! escaping, as mandated by RFC 3987, section 3.1 and appendix B.2 in //! the HTML 4.01 standard //! (http://www.w3.org/TR/html4/appendix/notes.html#non-ascii-chars). //! (It should work regardless of the charset used in the XML document //! the URL might be inserted into.) //! //! @seealso //! @[http_encode_url] { return replace ( string_to_utf8 (f), ({ // Encode all chars outside the set of reserved characters // (RFC 3986, section 2.2) and unreserved chars (section 2.3). // // Control chars "\000", "\001", "\002", "\003", "\004", "\005", "\006", "\007", "\010", "\011", "\012", "\013", "\014", "\015", "\016", "\017", "\020", "\021", "\022", "\023", "\024", "\025", "\026", "\027", "\030", "\031", "\032", "\033", "\034", "\035", "\036", "\037", "\177", // Others " ", "\"", // Encoded by legacy (presumably since it's used to delimit // attributes in xml). The single quote is valid but may be // escaped without changing its meaning in URI's according to // RFC 2396 section 2.3. FIXME: In the successor RFC 3986 it is // however part of the reserved set and ought therefore not be // encoded. "'", // FIXME: The following chars are invalid according to RFC 3986, // but can we add them without compatibility woes? //"<", ">", "\\", "^", "`", "{", "|", "}", // All eight bit chars (this is fast with the current replace() // implementation). "\200", "\201", "\202", "\203", "\204", "\205", "\206", "\207", "\210", "\211", "\212", "\213", "\214", "\215", "\216", "\217", "\220", "\221", "\222", "\223", "\224", "\225", "\226", "\227", "\230", "\231", "\232", "\233", "\234", "\235", "\236", "\237", "\240", "\241", "\242", "\243", "\244", "\245", "\246", "\247", "\250", "\251", "\252", "\253", "\254", "\255", "\256", "\257", "\260", "\261", "\262", "\263", "\264", "\265", "\266", "\267", "\270", "\271", "\272", "\273", "\274", "\275", "\276", "\277", "\300", "\301", "\302", "\303", "\304", "\305", "\306", "\307", "\310", "\311", "\312", "\313", "\314", "\315", "\316", "\317", "\320", "\321", "\322", "\323", "\324", "\325", "\326", "\327", "\330", "\331", "\332", "\333", "\334", "\335", "\336", "\337", "\340", "\341", "\342", "\343", "\344", "\345", "\346", "\347", "\350", "\351", "\352", "\353", "\354", "\355", "\356", "\357", "\360", "\361", "\362", "\363", "\364", "\365", "\366", "\367", "\370", "\371", "\372", "\373", "\374", "\375", "\376", "\377", }), ({ "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09", "%0A", "%0B", "%0C", "%0D", "%0E", "%0F", "%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17", "%18", "%19", "%1A", "%1B", "%1C", "%1D", "%1E", "%1F", "%7F", "%20", "%22", "%27", "%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87", "%88", "%89", "%8A", "%8B", "%8C", "%8D", "%8E", "%8F", "%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97", "%98", "%99", "%9A", "%9B", "%9C", "%9D", "%9E", "%9F", "%A0", "%A1", "%A2", "%A3", "%A4", "%A5", "%A6", "%A7", "%A8", "%A9", "%AA", "%AB", "%AC", "%AD", "%AE", "%AF", "%B0", "%B1", "%B2", "%B3", "%B4", "%B5", "%B6", "%B7", "%B8", "%B9", "%BA", "%BB", "%BC", "%BD", "%BE", "%BF", "%C0", "%C1", "%C2", "%C3", "%C4", "%C5", "%C6", "%C7", "%C8", "%C9", "%CA", "%CB", "%CC", "%CD", "%CE", "%CF", "%D0", "%D1", "%D2", "%D3", "%D4", "%D5", "%D6", "%D7", "%D8", "%D9", "%DA", "%DB", "%DC", "%DD", "%DE", "%DF", "%E0", "%E1", "%E2", "%E3", "%E4", "%E5", "%E6", "%E7", "%E8", "%E9", "%EA", "%EB", "%EC", "%ED", "%EE", "%EF", "%F0", "%F1", "%F2", "%F3", "%F4", "%F5", "%F6", "%F7", "%F8", "%F9", "%FA", "%FB", "%FC", "%FD", "%FE", "%FF", })); } string http_encode_cookie(string f) //! Encode dangerous characters in a string so that it can be used as //! the value string or name string in a cookie. //! //! @note //! This encodes with the same kind of %-escapes as //! @[http_encode_url], and that isn't an encoding specified by the //! cookie RFC 2965. It works because there is a nonstandard decoding //! of %-escapes in the Roxen HTTP protocol module. { // FIXME: There are numerous invalid chars that this doesn't encode, // e.g. 8 bit and wide chars. return replace( f, ({ "\000", "\001", "\002", "\003", "\004", "\005", "\006", "\007", "\010", "\011", "\012", "\013", "\014", "\015", "\016", "\017", "\020", "\021", "\022", "\023", "\024", "\025", "\026", "\027", "\030", "\031", "\032", "\033", "\034", "\035", "\036", "\037", "\177", "=", ",", ";", "%", }), ({ "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09", "%0A", "%0B", "%0C", "%0D", "%0E", "%0F", "%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17", "%18", "%19", "%1A", "%1B", "%1C", "%1D", "%1E", "%1F", "%7F", "%3D", "%2C", "%3B", "%25", })); } string http_encode_url (string f) //! Encode any string to be used as a component part in a URI. This //! means that all URI reserved and excluded characters are escaped, //! i.e. everything except @expr{A-Z@}, @expr{a-z@}, @expr{0-9@}, //! @expr{-@}, @expr{.@}, @expr{_@}, and @expr{~@} (see RFC 3986 //! section 2.3). //! //! @note //! Eight bit chars and wider are encoded using UTF-8 followed by http //! escaping, as mandated by RFC 3987, section 3.1 and appendix B.2 in //! the HTML 4.01 standard //! (http://www.w3.org/TR/html4/appendix/notes.html#non-ascii-chars). //! (It should work regardless of the charset used in the XML document //! the URL might be inserted into.) //! //! @seealso //! @[http_encode_invalids] { return replace ( string_to_utf8 (f), ({ // Control chars "\000", "\001", "\002", "\003", "\004", "\005", "\006", "\007", "\010", "\011", "\012", "\013", "\014", "\015", "\016", "\017", "\020", "\021", "\022", "\023", "\024", "\025", "\026", "\027", "\030", "\031", "\032", "\033", "\034", "\035", "\036", "\037", "\177", // RFC 3986, section 2.2, gen-delims ":", "/", "?", "#", "[", "]", "@", // RFC 3986, section 2.2, sub-delims "!", "$", "&", "'", "(", ")", "*", "+", ",", ";", "=", // Others outside the unreserved chars (RFC 3986, section 2.2) " ", "\"", "%", "<", ">", "\\", "^", "`", "{", "|", "}", // Compat note: "!", "(", ")" and "*" were not encoded in 4.5 // and earlier since they were part of the unreserved set in the // superseded URI RFC 2396. // All eight bit chars (this is fast with the current replace() // implementation). "\200", "\201", "\202", "\203", "\204", "\205", "\206", "\207", "\210", "\211", "\212", "\213", "\214", "\215", "\216", "\217", "\220", "\221", "\222", "\223", "\224", "\225", "\226", "\227", "\230", "\231", "\232", "\233", "\234", "\235", "\236", "\237", "\240", "\241", "\242", "\243", "\244", "\245", "\246", "\247", "\250", "\251", "\252", "\253", "\254", "\255", "\256", "\257", "\260", "\261", "\262", "\263", "\264", "\265", "\266", "\267", "\270", "\271", "\272", "\273", "\274", "\275", "\276", "\277", "\300", "\301", "\302", "\303", "\304", "\305", "\306", "\307", "\310", "\311", "\312", "\313", "\314", "\315", "\316", "\317", "\320", "\321", "\322", "\323", "\324", "\325", "\326", "\327", "\330", "\331", "\332", "\333", "\334", "\335", "\336", "\337", "\340", "\341", "\342", "\343", "\344", "\345", "\346", "\347", "\350", "\351", "\352", "\353", "\354", "\355", "\356", "\357", "\360", "\361", "\362", "\363", "\364", "\365", "\366", "\367", "\370", "\371", "\372", "\373", "\374", "\375", "\376", "\377", }), ({ "%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09", "%0A", "%0B", "%0C", "%0D", "%0E", "%0F", "%10", "%11", "%12", "%13", "%14", "%15", "%16", "%17", "%18", "%19", "%1A", "%1B", "%1C", "%1D", "%1E", "%1F", "%7F", "%3A", "%2F", "%3F", "%23", "%5B", "%5D", "%40", "%21","%24","%26","%27","%28","%29","%2A","%2B","%2C","%3B","%3D", "%20","%22","%25","%3C","%3E","%5C","%5E","%60","%7B","%7C","%7D", "%80", "%81", "%82", "%83", "%84", "%85", "%86", "%87", "%88", "%89", "%8A", "%8B", "%8C", "%8D", "%8E", "%8F", "%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97", "%98", "%99", "%9A", "%9B", "%9C", "%9D", "%9E", "%9F", "%A0", "%A1", "%A2", "%A3", "%A4", "%A5", "%A6", "%A7", "%A8", "%A9", "%AA", "%AB", "%AC", "%AD", "%AE", "%AF", "%B0", "%B1", "%B2", "%B3", "%B4", "%B5", "%B6", "%B7", "%B8", "%B9", "%BA", "%BB", "%BC", "%BD", "%BE", "%BF", "%C0", "%C1", "%C2", "%C3", "%C4", "%C5", "%C6", "%C7", "%C8", "%C9", "%CA", "%CB", "%CC", "%CD", "%CE", "%CF", "%D0", "%D1", "%D2", "%D3", "%D4", "%D5", "%D6", "%D7", "%D8", "%D9", "%DA", "%DB", "%DC", "%DD", "%DE", "%DF", "%E0", "%E1", "%E2", "%E3", "%E4", "%E5", "%E6", "%E7", "%E8", "%E9", "%EA", "%EB", "%EC", "%ED", "%EE", "%EF", "%F0", "%F1", "%F2", "%F3", "%F4", "%F5", "%F6", "%F7", "%F8", "%F9", "%FA", "%FB", "%FC", "%FD", "%FE", "%FF", })); } //! Compatibility alias for @[http_encode_url]. string correctly_http_encode_url(string f) { return http_encode_url (f); } string add_pre_state( string url, multiset state ) //! Adds the provided states as prestates to the provided url. { #ifdef MODULE_DEBUG if(!url) error("URL needed for add_pre_state()\n"); #endif if(!state || !sizeof(state)) return url; string base; if (sscanf (url, "%s://%[^/]%s", base, string host, url) == 3) base += "://" + host; else base = ""; if(strlen(url)>5 && (url[1] == '(' || url[1] == '<')) return base + url; return base + "/(" + sort(indices(state)) * "," + ")" + url ; } string make_absolute_url (string url, RequestID|void id, multiset|void prestates, mapping|void variables) //! Returns an absolute URL built from the components: If @[url] is a //! virtual (possibly relative) path, the current @[RequestID] object //! must be supplied in @[id] to resolve the absolute URL. //! //! If no @[prestates] are provided, the current prestates in @[id] //! are added to the URL, provided @[url] is a local absolute or //! relative URL. //! //! If @[variables] is given it's a mapping containing variables that //! should be appended to the URL. Each index is a variable name and //! the value can be a string or an array, in which case a separate //! variable binding is added for each string in the array. That means //! that e.g. @[RequestID.real_variables] can be used as @[variables]. //! //! @[url] is encoded using @[http_encode_invalids] so it may contain //! eight bit chars and wider. All variable names and values in //! @[variables] are thoroughly encoded using @[http_encode_url] so //! they should not be encoded in any way to begin with. { // If the URL is a local relative URL we make it absolute. url = fix_relative(url, id); // Add protocol and host to local absolute URLs. if (has_prefix (url, "/")) { if(id) { Standards.URI uri = Standards.URI(id->url_base()); // Handle proxies string xf_proto = id->request_headers["x-forwarded-proto"]; string xf_host = id->request_headers["x-forwarded-host"]; if (xf_proto && xf_host) { uri = Standards.URI(xf_proto + "://" + xf_host + uri->path); } else if (xf_host) { uri = Standards.URI(uri->scheme + "://" + xf_host + uri->path); } else if (xf_proto) { uri = Standards.URI(xf_proto + "://" + uri->host + ":" + uri->port + uri->path); } url = (string)uri + url[1..]; if (!prestates) prestates = id->prestate; } else { // Ok, no domain present in the URL and no ID object given. // Perhaps one should dare throw an error here, but since most // UA can handle the redirect it is nicer no to. } } if(prestates && sizeof(prestates)) url = add_pre_state (url, prestates); if( String.width( url )>8 && !has_value( url, "?" ) ) url += "?magic_roxen_automatic_charset_variable="+ magic_charset_variable_value; url = http_encode_invalids (url); if (variables) { string concat_char = has_value (url, "?") ? "&" : "?"; foreach (indices (variables), string var) { var = http_encode_url (var); mixed val = variables[var]; if (stringp (val)) { url += concat_char + var + "=" + http_encode_url (val); concat_char = "&"; } else if (arrayp (val)) foreach (val, mixed part) if (stringp (part)) { url += concat_char + var + "=" + http_encode_url (part); concat_char = "&"; } } } return url; } mapping http_redirect( string url, RequestID|void id, multiset|void prestates, mapping|void variables, void|int http_code) //! Returns a http-redirect message to the specified URL. The absolute //! URL that is required for the @expr{Location@} header is built from //! the given components using @[make_absolute_url]. See that function //! for details. //! //! If @[http_code] is nonzero, it specifies the http status code to //! use in the response. It's @[Protocols.HTTP.HTTP_FOUND] (i.e. 302) //! by default. { // If we don't get any URL we don't know what to do. // But we do! /per if(!url) url = ""; url = make_absolute_url (url, id, prestates, variables); HTTP_WERR("Redirect -> "+url); return http_status( http_code || Protocols.HTTP.HTTP_FOUND, "Redirect to " + html_encode_string(url)) + ([ "extra_heads":([ "Location":url ]) ]); } mapping http_stream(Stdio.File from) //! Returns a result mapping where the data returned to the client //! will be streamed raw from the given Stdio.File object, instead of //! being packaged by roxen. In other words, it's entirely up to you //! to make sure what you send is HTTP data. { return ([ "raw":1, "file":from, "len":-1, ]); } mapping(string:mixed) http_digest_required(mapping(string:string) challenge, string|void message) //! Generates a result mapping that instructs the browser to //! authenticate the user using Digest authentication (see RFC 2617 //! section 3). //! //! The optional message is the message body that the client typically //! shows the user if he or she decides to abort the authentication //! request. { if(!message) message = "<h1>Authentication failed.\n</h1>"; HTTP_WERR(sprintf("Auth required (%O)", challenge)); string digest_challenge = ""; foreach(challenge; string key; string val) { // FIXME: This doesn't work with all Digest directives. E.g. the // algorithm gets incorrectly quoted. digest_challenge += sprintf(" %s=%O", key, val); } return http_low_answer(401, message) + ([ "extra_heads":([ "WWW-Authenticate":"Digest"+digest_challenge,]),]); } mapping(string:mixed) http_auth_required(string realm, string|void message, void|RequestID id) //! Generates a result mapping that instructs the browser to //! authenticate the user using Basic authentication (see RFC 2617 //! section 2). @[realm] is the name of the realm on the server, which //! will typically end up in the browser's prompt for a name and //! password (e.g. "Enter username for @i{realm@} at @i{hostname@}:"). //! //! The optional message is the message body that the client typically //! shows the user if he or she decides to abort the authentication //! request. { HTTP_WERR("Auth required ("+realm+")"); if (id) { return id->conf->auth_failed_file( id, message ) + ([ "extra_heads":([ "WWW-Authenticate": sprintf ("Basic realm=%O", realm)])]); } if(!message) message = "<h1>Authentication failed.</h1>"; return http_low_answer(401, message) + ([ "extra_heads":([ "WWW-Authenticate": sprintf ("Basic realm=%O", realm)])]); } mapping(string:mixed) http_proxy_auth_required(string realm, void|string message) //! Similar to @[http_auth_required], but returns a 407 //! Proxy-Authenticate header (see RFC 2616 section 14.33). { if(!message) message = "<h1>Proxy authentication failed.</h1>"; return http_low_answer(407, message) + ([ "extra_heads":([ "Proxy-Authenticate": sprintf ("Basic realm=%O", realm)])]); } // --- From the old 'roxenlib' file ------------------------------- string extract_query(string from) { if(!from) return ""; if(sscanf(from, "%*s?%s%*[ \t\n]", from)) return (from/"\r")[0]; return ""; } protected string mk_env_var_name(string name) { name = replace(name, " ", "_"); string res = ""; do { string ok_part=""; sscanf(name, "%[A-Za-z0-9_]%s", ok_part, name); res += ok_part; if (sizeof(name)) { res += "_"; name = name[1..]; } } while (sizeof(name)); return res; } mapping build_env_vars(string f, RequestID id, string path_info) //! Generate a mapping with environment variables suitable for use //! with CGI-scripts or SSI scripts etc. //! //! @mapping //! @member string REQUEST_URI //! URI requested by the user. //! @member string REDIRECT_URL //! Target of the first internal redirect. //! @member string INDEX //! @member string SCRIPT_NAME //! @member string PATH_INFO //! @member string PATH_TRANSLATED //! @member string DOCUMENT_NAME //! @member string DOCUMENT_URI //! @member string LAST_MODIFIED //! @member string SCRIPT_FILENAME //! @member string DOCUMENT_ROOT //! @member string HTTP_HOST //! @member string HTTP_PROXY_CONNECTION //! @member string HTTP_ACCEPT //! @member string HTTP_COOKIE //! @member string HTTP_PRAGMA //! @member string HTTP_CONNECTION //! @member string HTTP_USER_AGENT //! @member string HTTP_REFERER //! @member string REMOTE_ADDR //! @member string REMOTE_HOST //! @member string REMOTE_PORT //! @member string QUERY_STRING //! @member string REMOTE_USER //! @member string ROXEN_AUTHENTICATED //! @member string CONTENT_TYPE //! @member string CONTENT_LENGTH //! @member string REQUEST_METHOD //! @member string SERVER_PORT //! @endmapping { string addr=id->remoteaddr || "Internal"; mapping(string:string) new = ([]); if(id->query && strlen(id->query)) new->INDEX=id->query; if(path_info && strlen(path_info)) { if(path_info[0] != '/') path_info = "/" + path_info; // Kludge if ( ([mapping(string:mixed)]id->misc)->path_info == path_info ) { // Already extracted new["SCRIPT_NAME"]=id->not_query; } else { new["SCRIPT_NAME"]= id->not_query[0..strlen([string]id->not_query)-strlen(path_info)-1]; } new["PATH_INFO"]=path_info; // FIXME: Consider looping over the splitted path. string trailer = ""; while(1) { // Fix PATH_TRANSLATED correctly. string translated_base = id->conf->real_file(path_info, id); if (translated_base) { new["PATH_TRANSLATED"] = combine_path_unix(translated_base, trailer); break; } array(string) tmp = path_info/"/" - ({""}); if(!sizeof(tmp)) break; path_info = "/" + (tmp[..sizeof(tmp)-2]) * "/"; trailer = tmp[-1] + "/" + trailer; } } else new["SCRIPT_NAME"]=id->not_query; // Find the original request. RequestID tmpid = id; RequestID previd; while(tmpid->misc->orig) { // internal get tmpid = (previd = tmpid)->misc->orig; } // The original URL. new["REQUEST_URI"] = tmpid->misc->redirected_raw_url || tmpid->raw_url; if(tmpid->misc->is_redirected || previd) { // Destination of the first internal redirect. if (tmpid->misc->redirected_to) { new["REDIRECT_URL"] = Roxen.http_encode_invalids(tmpid->misc->redirected_to); } else if (previd) { new["REDIRECT_URL"] = previd->raw_url; } new["REDIRECT_STATUS"] = "200"; } // Begin "SSI" vars. array(string) tmps; if(sizeof(tmps = tmpid->not_query/"/" - ({""}))) new["DOCUMENT_NAME"]=tmps[-1]; new["DOCUMENT_URI"]= tmpid->not_query; Stat tmpi; string real_file=tmpid->conf->real_file(tmpid->not_query||"", tmpid); if (real_file) { if(stringp(real_file)) { if ((tmpi = file_stat(real_file)) && sizeof(tmpi)) { new["LAST_MODIFIED"]=http_date(tmpi[3]); } } else { // Extra paranoia. report_error(sprintf("real_file(%O, %O) returned %O\n", tmpid->not_query||"", tmpid, real_file)); } } // End SSI vars. if(string tmp = id->conf->real_file(new["SCRIPT_NAME"], id)) new["SCRIPT_FILENAME"] = tmp; if(string tmp = id->conf->real_file("/", id)) new["DOCUMENT_ROOT"] = tmp; if(!new["PATH_TRANSLATED"]) m_delete(new, "PATH_TRANSLATED"); else if(new["PATH_INFO"][-1] != '/' && new["PATH_TRANSLATED"][-1] == '/') new["PATH_TRANSLATED"] = new["PATH_TRANSLATED"][0..strlen(new["PATH_TRANSLATED"])-2]; // HTTP_ style variables: mapping hdrs; if ((hdrs = id->request_headers)) { foreach(indices(hdrs) - ({ "authorization", "proxy-authorization", "security-scheme", }), string h) { string hh = "HTTP_" + replace(upper_case(h), ({ " ", "-", "\0", "=" }), ({ "_", "_", "", "_" })); new[mk_env_var_name(hh)] = replace(hdrs[h], ({ "\0" }), ({ "" })); } if (!new["HTTP_HOST"]) { if(objectp(id->my_fd) && id->my_fd->query_address(1)) new["HTTP_HOST"] = replace(id->my_fd->query_address(1)," ",":"); } } else { if(id->misc->host) new["HTTP_HOST"]=id->misc->host; else if(objectp(id->my_fd) && id->my_fd->query_address(1)) new["HTTP_HOST"]=replace(id->my_fd->query_address(1)," ",":"); if(id->misc["proxy-connection"]) new["HTTP_PROXY_CONNECTION"]=id->misc["proxy-connection"]; if(id->misc->accept) { if (arrayp(id->misc->accept)) { new["HTTP_ACCEPT"]=id->misc->accept*", "; } else { new["HTTP_ACCEPT"]=(string)id->misc->accept; } } if(id->misc->cookies) new["HTTP_COOKIE"] = id->misc->cookies; if(sizeof(id->pragma)) new["HTTP_PRAGMA"]=indices(id->pragma)*", "; if(stringp(id->misc->connection)) new["HTTP_CONNECTION"]=id->misc->connection; new["HTTP_USER_AGENT"] = id->client*" "; if(id->referer && sizeof(id->referer)) new["HTTP_REFERER"] = id->referer*""; } new["REMOTE_ADDR"]=addr; if(roxen->quick_ip_to_host(addr) != addr) new["REMOTE_HOST"]=roxen->quick_ip_to_host(addr); catch { if(id->my_fd) new["REMOTE_PORT"] = (id->my_fd->query_address()/" ")[1]; }; if (id->query && sizeof(id->query)) { new["QUERY_STRING"] = id->query; } if(id->realauth) new["REMOTE_USER"] = (id->realauth / ":")[0]; if( User u = id->conf->authenticate( id ) ) new["ROXEN_AUTHENTICATED"] = u->name(); // User is valid with the Roxen userdb. if(id->data && strlen(id->data)) { if(id->misc["content-type"]) new["CONTENT_TYPE"]=id->misc["content-type"]; else new["CONTENT_TYPE"]="application/x-www-form-urlencoded"; new["CONTENT_LENGTH"]=(string)strlen(id->data); } if(id->query && strlen(id->query)) new["INDEX"]=id->query; new["REQUEST_METHOD"]=id->method||"GET"; new["SERVER_PORT"] = id->my_fd? ((id->my_fd->query_address(1)||"foo unknown")/" ")[1]: "Internal"; // Protect against execution of arbitrary code in broken bash. foreach(new; string e; string v) { if (has_prefix(v, "() {")) { report_warning("ENV: Function definition in environment variable:\n" "ENV: %O=%O\n", e, v); new[e] = " " + v; } } return new; } mapping build_roxen_env_vars(RequestID id) //! Generate a mapping with additional environment variables suitable //! for use with CGI-scripts or SSI scripts etc. These variables are //! roxen extensions and not defined in any standard document. //! Specifically: //! @pre{ //! For each cookie: COOKIE_cookiename=cookievalue //! For each variable: VAR_variablename=variablevalue //! (Where the null character is encoded as "#") //! For each variable: QUERY_variablename=variablevalue //! (Where the null character is encoded as " ") //! For each 'prestate': PRESTATE_x=true //! For each 'config': CONFIG_x=true //! For each 'supports' flag: SUPPORTS_x=true //! @} //! //! @mapping //! @member string ROXEN_USER_ID //! The unique ID for that client, if available. //! @member string COOKIES //! A space delimitered list of all the cookies names. //! @member string CONFIGS //! A space delimitered list of all config flags. //! @member string VARIABLES //! A space delimitered list of all variable names. //! @member string PRESTATES //! A space delimitered list of all prestates. //! @member string SUPPORTS //! A space delimitered list of all support flags. //! @endmapping { mapping(string:string) new = ([]); string tmp; if(id->cookies->RoxenUserID) new["ROXEN_USER_ID"]=id->cookies->RoxenUserID; new["COOKIES"] = ""; foreach(indices(id->cookies), tmp) { new["COOKIE_"+mk_env_var_name(tmp)] = id->cookies[tmp]; new["COOKIES"]+= mk_env_var_name(tmp)+" "; } foreach(indices(id->config), tmp) { tmp = mk_env_var_name(tmp); new["CONFIG_"+tmp]="true"; if(new["CONFIGS"]) new["CONFIGS"] += " " + tmp; else new["CONFIGS"] = tmp; } foreach(indices(id->variables), tmp) { string name = mk_env_var_name(tmp); if (mixed value = id->variables[tmp]) if (!catch (value = (string) value) && (sizeof(value) < 8192)) { // Some shells/OS's don't like LARGE environment variables new["QUERY_"+name] = replace(value,"\000"," "); new["VAR_"+name] = replace(value,"\000","#"); } // Is it correct to record the names for variables with no values here? /mast if(new["VARIABLES"]) new["VARIABLES"]+= " " + name; else new["VARIABLES"]= name; } foreach(indices(id->prestate), tmp) { tmp = mk_env_var_name(tmp); new["PRESTATE_"+tmp]="true"; if(new["PRESTATES"]) new["PRESTATES"] += " " + tmp; else new["PRESTATES"] = tmp; } foreach(indices(id->supports), tmp) { tmp = mk_env_var_name(tmp-","); new["SUPPORTS_"+tmp]="true"; if (new["SUPPORTS"]) new["SUPPORTS"] += " " + tmp; else new["SUPPORTS"] = tmp; } // Protect against execution of arbitrary code in broken bash. foreach(new; string e; string v) { if (has_prefix(v, "() {")) { report_warning("ENV: Function definition in environment variable:\n" "ENV: %O=%O\n", e, v); new[e] = " " + v; } } return new; } string strip_config(string from) //! Remove all 'config' data from the given (local) URL. { sscanf(from, "/<%*s>%s", from); return from; } string strip_prestate(string from) //! Remove all 'prestate' data from the given (local) URL. { sscanf(from, "/(%*s)%s", from); return from; } string parse_rxml(string what, RequestID id ) //! Parse the given string as RXML and return the result. This //! function inherits the current RXML evaluation context if there is //! any, otherwise a new context is created. //! //! @note //! Try to avoid using this function to parse recursively; the RXML //! module provides several ways to accomplish that. If there's code //! that recurses directly then several RXML features, like p-code //! compilation, streaming operation and continuations, won't work in //! that part of the RXML code. { if(!objectp(id)) error("No id passed to parse_rxml\n"); return id->conf->parse_rxml( what, id ); } array(string|RXML.PCode) compile_rxml (string what, RequestID id) //! Evaluates and compiles the given string as RXML. Returns an array //! where the first element is the result of the evaluation and the //! second is the p-code object that contains the compiled RXML tree. //! It can be re-evaluated by e.g. @[Roxen.eval_p_code]. This function //! initiates a new context for the evaluation, so it won't recurse in //! the currently ongoing RXML evaluation, if any. { RXML.Parser parser = get_rxml_parser (id, 0, 1); parser->write_end (what); array(string|RXML.PCode) res = ({parser->eval(), parser->p_code}); res[1]->finish(); //parser->type->give_back (parser); // RXML.PXml is not resettable anyway. return res; } mixed eval_p_code (RXML.PCode p_code, RequestID id) //! Evaluates the given p-code object and returns the result. This //! function initiates a new context for the evaluation, so it won't //! recurse in the currently ongoing RXML evaluation, if any. //! //! @note //! The caller should first check with @[p_code->is_stale] that the //! p-code isn't stale, i.e. that none of the tag sets used in it have //! changed since it was created. If that's the case it isn't safe to //! evaluate the p-code, so it should be discarded and perhaps //! replaced with a new one retrieved by @[RXML.string_to_p_code] or //! generated from source. See also @[RXML.RenewablePCode], which //! never can become stale. { return p_code->eval (p_code->new_context (id)); } RXML.Parser get_rxml_parser (RequestID id, void|RXML.Type type, void|int make_p_code) //! Returns a parser object for parsing and evaluating a string as //! RXML in a new context. @[type] may be used to set the top level //! type to parse. It defaults to the standard type and parser for //! RXML code. //! //! If @[make_p_code] is nonzero, the parser is initialized with an //! @[RXML.PCode] object to collect p-code during the evaluation. When //! the parser is finished, the p-code is available in the variable //! @[RXML.Parser.p_code]. The p-code itself is not finished, though; //! @[RXML.PCode.finished] should be called in it before use to //! compact it, although that isn't mandatory. { RXML.Parser parser = id->conf->rxml_tag_set->get_parser ( type || id->conf->default_content_type, id, make_p_code); parser->recover_errors = 1; if (make_p_code) parser->p_code->recover_errors = 1; return parser; } protected int(0..0) return_zero() {return 0;} protected Parser.HTML xml_parser = lambda() { Parser.HTML p = Parser.HTML(); p->lazy_entity_end (1); p->match_tag (0); p->xml_tag_syntax (3); p->add_quote_tag ("!--", return_zero, "--"); p->add_quote_tag ("![CDATA[", return_zero, "]]"); p->add_quote_tag ("?", return_zero, "?"); return p; }(); Parser.HTML get_xml_parser() //! Returns a @[Parser.HTML] initialized for parsing XML. It has all //! the flags set properly for XML syntax and have callbacks to ignore //! comments, CDATA blocks and unknown PI tags, but it has no //! registered tags and doesn't decode any entities. { return xml_parser->clone(); } constant iso88591 =([ " ": " ", "¡": "¡", "¢": "¢", "£": "£", "¤": "¤", "¥": "¥", "¦": "¦", "§": "§", "¨": "¨", "©": "©", "ª": "ª", "«": "«", "¬": "¬", "": "", "®": "®", "¯": "¯", "°": "°", "±": "±", "²": "²", "³": "³", "´": "´", "µ": "µ", "¶": "¶", "·": "·", "¸": "¸", "¹": "¹", "º": "º", "»": "»", "¼": "¼", "½": "½", "¾": "¾", "¿": "¿", "À": "À", "Á": "Á", "Â": "Â", "Ã": "Ã", "Ä": "Ä", "Å": "Å", "Æ": "Æ", "Ç": "Ç", "È": "È", "É": "É", "Ê": "Ê", "Ë": "Ë", "Ì": "Ì", "Í": "Í", "Î": "Î", "Ï": "Ï", "Ð": "Ð", "Ñ": "Ñ", "Ò": "Ò", "Ó": "Ó", "Ô": "Ô", "Õ": "Õ", "Ö": "Ö", "×": "×", "Ø": "Ø", "Ù": "Ù", "Ú": "Ú", "Û": "Û", "Ü": "Ü", "Ý": "Ý", "Þ": "Þ", "ß": "ß", "à": "à", "á": "á", "â": "â", "ã": "ã", "ä": "ä", "å": "å", "æ": "æ", "ç": "ç", "è": "è", "é": "é", "ê": "ê", "ë": "ë", "ì": "ì", "í": "í", "î": "î", "ï": "ï", "ð": "ð", "ñ": "ñ", "ò": "ò", "ó": "ó", "ô": "ô", "õ": "õ", "ö": "ö", "÷": "÷", "ø": "ø", "ù": "ù", "ú": "ú", "û": "û", "ü": "ü", "ý": "ý", "þ": "þ", "ÿ": "ÿ", ]); constant international =([ "&OElig;": "\x0152", "&oelig;": "\x0153", "&Scaron;": "\x0160", "&scaron;": "\x0161", "&Yuml;": "\x0178", "&circ;": "\x02C6", "&tilde;": "\x02DC", "&ensp;": "\x2002", "&emsp;": "\x2003", " ": "\x2009", "&zwnj;": "\x200C", "&zwj;": "\x200D", "&lrm;": "\x200E", "&rlm;": "\x200F", "–": "\x2013", "—": "\x2014", "‘": "\x2018", "’": "\x2019", "&sbquo;": "\x201A", "“": "\x201C", "”": "\x201D", "&bdquo;": "\x201E", "&dagger;": "\x2020", "&Dagger;": "\x2021", "&permil;": "\x2030", "&lsaquo;": "\x2039", "&rsaquo;": "\x203A", "€": "\x20AC", ]); constant symbols =([ "&fnof;": "\x0192", "&thetasym;": "\x03D1", "&upsih;": "\x03D2", "ϖ": "\x03D6", "•": "\x2022", "…": "\x2026", "′": "\x2032", "″": "\x2033", "&oline;": "\x203E", "&frasl;": "\x2044", "&weierp;": "\x2118", "&image;": "\x2111", "&real;": "\x211C", "™": "\x2122", "&alefsym;": "\x2135", "←": "\x2190", "↑": "\x2191", "→": "\x2192", "↓": "\x2193", "↔": "\x2194", "&crarr;": "\x21B5", "⇐": "\x21D0", "&uArr;": "\x21D1", "⇒": "\x21D2", "&dArr;": "\x21D3", "⇔": "\x21D4", "∀": "\x2200", "∂": "\x2202", "∃": "\x2203", "∅": "\x2205", "∇": "\x2207", "∈": "\x2208", "∉": "\x2209", "&ni;": "\x220B", "∏": "\x220F", "∑": "\x2211", "−": "\x2212", "&lowast;": "\x2217", "√": "\x221A", "&prop;": "\x221D", "∞": "\x221E", "&ang;": "\x2220", "&and;": "\x2227", "&or;": "\x2228", "∩": "\x2229", "∪": "\x222A", "∫": "\x222B", "&there4;": "\x2234", "&sim;": "\x223C", "&cong;": "\x2245", "≈": "\x2248", "≠": "\x2260", "&equiv;": "\x2261", "≤": "\x2264", "≥": "\x2265", "⊂": "\x2282", "⊃": "\x2283", "&nsub;": "\x2284", "&sube;": "\x2286", "&supe;": "\x2287", "&oplus;": "\x2295", "&otimes;": "\x2297", "&perp;": "\x22A5", "⋅": "\x22C5", "&lceil;": "\x2308", "&rceil;": "\x2309", "&lfloor;": "\x230A", "&rfloor;": "\x230B", "&lang;": "\x2329", "&rang;": "\x232A", "&loz;": "\x25CA", "&spades;": "\x2660", "&clubs;": "\x2663", "&hearts;": "\x2665", "&diams;": "\x2666", ]); constant greek = ([ "Α": "\x391", "Β": "\x392", "Γ": "\x393", "Δ": "\x394", "Ε": "\x395", "Ζ": "\x396", "Η": "\x397", "Θ": "\x398", "Ι": "\x399", "Κ": "\x39A", "Λ": "\x39B", "Μ": "\x39C", "Ν": "\x39D", "Ξ": "\x39E", "Ο": "\x39F", "Π": "\x3A0", "Ρ": "\x3A1", "Σ": "\x3A3", "Τ": "\x3A4", "Υ": "\x3A5", "Φ": "\x3A6", "Χ": "\x3A7", "Ψ": "\x3A8", "Ω": "\x3A9", "α": "\x3B1", "β": "\x3B2", "γ": "\x3B3", "δ": "\x3B4", "ε": "\x3B5", "ζ": "\x3B6", "η": "\x3B7", "θ": "\x3B8", "ι": "\x3B9", "κ": "\x3BA", "λ": "\x3BB", "μ": "\x3BC", "ν": "\x3BD", "ξ": "\x3BE", "ο": "\x3BF", "π": "\x3C0", "ρ": "\x3C1", "&sigmaf;": "\x3C2", "σ": "\x3C3", "τ": "\x3C4", "υ": "\x3C5", "φ": "\x3C6", "χ": "\x3C7", "ψ": "\x3C8", "ω": "\x3C9", ]); constant replace_entities = indices( iso88591 ) + indices( international ) + indices( symbols ) + indices( greek ) + ({"<",">","&",""","'",""",""","'",""}); constant replace_values = values( iso88591 ) + values( international ) + values( symbols ) + values( greek ) + ({"<",">","&","\"","\'","\"","\"","\'","\000"}); constant safe_characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"/""; constant empty_strings = ({""})*sizeof(safe_characters); //! Returns 1 if @[in] is nonempty and only contains alphanumerical //! characters (a-z, A-Z and 0-9). Otherwise returns 0. int(0..1) is_safe_string(string in) { return strlen(in) && !strlen(replace(in, safe_characters, empty_strings)); } string make_entity( string q ) { return "&"+q+";"; } string make_tag_attributes(mapping(string:string) in, void|int preserve_roxen_entities) { if (!in || !sizeof(in)) return ""; // Special quoting which leaves Roxen entities (e.g. &page.path;) // unescaped. string quote_fn(string text) { string out = ""; int pos = 0; while ((pos = search(text, "&")) >= 0) { if ((sscanf(text[pos..], "&%[^ <>;&];", string entity) == 1) && search(entity, ".") >= 0) { out += html_encode_string(text[..pos - 1]) + "&" + entity + ";"; text = text[pos + strlen(entity) + 2..]; } else { out += html_encode_string(text[..pos]); text = text[pos + 1..]; } } return out + html_encode_string(text); }; string res = ""; array(string) sorted_attrs = sort(indices(in)); if (preserve_roxen_entities) { foreach(sorted_attrs, string a) res += " " + a + "=\"" + quote_fn((string) in[a]) + "\""; } else { foreach(sorted_attrs, string a) res += " " + a + "=\"" + html_encode_string((string) in[a]) + "\""; } return res; } string make_tag(string name, mapping(string:string) args, void|int xml, void|int preserve_roxen_entities) //! Returns an empty element tag @[name], with the tag arguments dictated //! by the mapping @[args]. If the flag @[xml] is set, slash character will //! be added in the end of the tag. Use RXML.t_xml->format_tag(name, args) //! instead. { string attrs = make_tag_attributes(args, preserve_roxen_entities); return "<" + name + attrs + (xml ? " /" : "" ) + ">"; } string make_container(string name, mapping(string:string) args, string content, void|int preserve_roxen_entities) //! Returns a container tag @[name] encasing the string @[content], with //! the tag arguments dictated by the mapping @[args]. Use //! RXML.t_xml->format_tag(name, args, content) instead. { if(args["/"]=="/") m_delete(args, "/"); return make_tag(name, args, 0, preserve_roxen_entities) + content + "</" + name + ">"; } string add_config( string url, array config, multiset prestate ) { if(!sizeof(config)) return url; if(strlen(url)>5 && (url[1] == '(' || url[1] == '<')) return url; return "/<" + config * "," + ">" + add_pre_state(url, prestate); } string extension( string f, RequestID|void id) { string ext, key; if(!f || !strlen(f)) return ""; if(!id || !(ext = [string]id->misc[key="_ext_"+f])) { sscanf(reverse(f), "%s.%*s", ext); if(!ext) ext = ""; else { ext = lower_case(reverse(ext)); if(sizeof (ext) && (ext[-1] == '~' || ext[-1] == '#')) ext = ext[..strlen(ext)-2]; } if(id) id->misc[key]=ext; } return ext; } int(0..1) backup_extension( string f ) //! Determines if the provided filename indicates //! that the file is a backup file. { if(!strlen(f)) return 1; return (f[-1] == '#' || f[-1] == '~' || f[0..1]==".#" || (f[-1] == 'd' && sscanf(f, "%*s.old")) || (f[-1] == 'k' && sscanf(f, "%*s.bak"))); } array(string) win_drive_prefix(string path) //! Splits path into ({ prefix, path }) array. Prefix is "" for paths on //! non-Windows systems or when no proper drive prefix is found. { #ifdef __NT__ string prefix; if (sscanf(path, "\\\\%s%*[\\/]%s", prefix, string path_end) == 3) { return ({ "\\\\" + prefix, "/" + path_end }); } else if (sscanf(path, "%1s:%s", prefix, path) == 2) { return ({ prefix + ":", path }); } #endif return ({ "", path }); } string simplify_path(string file) //! This one will remove .././ etc. in the path. The returned value //! will be a canonic representation of the given path. { // Faster for most cases since "//", "./" or "../" rarely exists. if(!strlen(file) || (!has_value(file, "./") && (file[-1] != '.') && !has_value (file, "//"))) return file; int relative, got_slashdot_suffix; [string prefix, file] = win_drive_prefix(file); if (!has_prefix (file, "/")) relative = 1; // The following used to test for "//" at the end (thus replacing // that too with "/."). That must be some kind of old confusion // (dates back to at least roxenlib.pike 1.1 from 11 Nov 1996). // /mast if (has_suffix (file, "/.")) got_slashdot_suffix = 1; file=combine_path("/", file); if(got_slashdot_suffix) file += "/."; if(relative) return prefix + file[1..]; return prefix + file; } string short_date(int timestamp) //! Returns a short date string from a time-int { int date = time(1); if(ctime(date)[20..23] != ctime(timestamp)[20..23]) return ctime(timestamp)[4..9] +" "+ ctime(timestamp)[20..23]; return ctime(timestamp)[4..9] +" "+ ctime(timestamp)[11..15]; } string int2roman(int m) //! Converts the provided integer to a roman integer (i.e. a string). { string res=""; if (m>10000000||m<0) return "que"; while (m>999) { res+="M"; m-=1000; } if (m>899) { res+="CM"; m-=900; } else if (m>499) { res+="D"; m-=500; } else if (m>399) { res+="CD"; m-=400; } while (m>99) { res+="C"; m-=100; } if (m>89) { res+="XC"; m-=90; } else if (m>49) { res+="L"; m-=50; } else if (m>39) { res+="XL"; m-=40; } while (m>9) { res+="X"; m-=10; } if (m>8) return res+"IX"; else if (m>4) { res+="V"; m-=5; } else if (m>3) return res+"IV"; while (m) { res+="I"; m--; } return res; } string number2string(int n, mapping m, array|function names) { string s; switch (m->type) { case "string": if (functionp(names)) { s=([function(int:string)]names)(n); break; } if (n<0 || n>=sizeof(names)) s=""; else s=([array(string)]names)[n]; break; case "roman": s=int2roman(n); break; default: return (string)n; } switch(m["case"]) { case "lower": return lower_case(s); case "upper": return upper_case(s); case "capitalize": return capitalize(s); } #ifdef old_rxml_compat if (m->lower) return lower_case(s); if (m->upper) return upper_case(s); if (m->cap||m->capitalize) return capitalize(s); #endif return s; } string image_from_type( string t ) //! Returns an internal-gopher icon link that corresponds to the //! provided MIME-type, e.g. "internal-gopher-image" for "image/gif". { if(t) { sscanf(t, "%s/", t); switch(t) { case "audio": case "sound": return "internal-gopher-sound"; case "image": return "internal-gopher-image"; case "application": return "internal-gopher-binary"; case "text": return "internal-gopher-text"; } } return "internal-gopher-unknown"; } protected constant size_suffix = ({ "B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" }); string sizetostring( int|float size ) //! Returns the size as a memory size string with suffix, //! e.g. 43210 is converted into "42.2 kB". To be correct //! to the latest standards it should really read "42.2 KiB", //! but we have chosen to keep the old notation for a while. //! The function knows about the quantifiers kilo, mega, giga, //! tera, peta, exa, zetta and yotta. { int neg = size < 0; int|float abs_size = abs (size); if (abs_size < 1024) { if (intp (size)) return size + " " + size_suffix[0]; return size < 10.0 ? sprintf ("%.2f %s", size, size_suffix[0]) : sprintf ("%.0f %s", size, size_suffix[0]); } float s = (float) abs_size; size=0; while( s >= 1024.0 ) { s /= 1024.0; if (++size == sizeof (size_suffix) - 1) break; } if (neg) s = -s; return sprintf("%.1f %s", s, size_suffix[ size ]); } string format_hrtime (int hrtime, void|int pad) //! Returns a nicely formatted string for a time lapse value expressed //! in microseconds. If @[pad] is nonzero then the value is formatted //! right justified in a fixed-length string. { if (hrtime < 1000000) return sprintf (pad ? "%7.3f ms" : "%.3f ms", hrtime / 1e3); else if (hrtime < 60 * 1000000) return sprintf (pad ? "%8.3f s" : "%.3f s", hrtime / 1e6); else if (hrtime < 60 * 60 * 1000000) return sprintf (pad ? "%3d:%02d min" : "%d:%02d min", hrtime / (60 * 1000000), (hrtime / 1000000) % 60); else return sprintf (pad ? "%4d:%02d:%02d" : "%d:%02d:%02d", hrtime / (60 * 60 * 1000000), (hrtime / (60 * 1000000)) % 60, (hrtime / 1000000) % 60); } string html_decode_string(LocaleString str) //! Decodes `str', opposite to @[html_encode_string()]. { return replace((string)str, replace_entities, replace_values); } string html_encode_tag_value(LocaleString str) //! Encodes `str' for use as a value in an html tag. { // '<' is not allowed in attribute values in XML 1.0. return "\"" + replace((string)str, ({"&", "\"", "<"}), ({"&", """, "<"})) + "\""; } protected string my_sprintf(int prefix, string f, int arg) //! Filter prefix option in format string if prefix = 0. { if(!prefix && sscanf(f, "%%%*d%s", string format) == 2) f = "%" + format; return sprintf(f, arg); } string strftime(string fmt, int t, void|string lang, void|function language, void|RequestID id) //! Encodes the time `t' according to the format string `fmt'. { if(!sizeof(fmt)) return ""; mapping lt = localtime(t); fmt=replace(fmt, "%%", "\0"); array(string) a = fmt/"%"; string res = a[0]; mapping(string:string) m = (["type":"string"]); foreach(a[1..], string key) { m_delete (m, "case"); int(0..1) prefix = 1; int(0..1) alternative_numbers = 0; int(0..1) alternative_form = 0; while (sizeof(key)) { switch(key[0]) { // Flags. case '!': // Inhibit numerical padding (Roxen specific). case '-': // Inhibit numerical padding (glibc-style). prefix = 0; key = key[1..]; continue; case '^': // Upper-case (glibc-style). m->case = "upper"; key = key[1..]; continue; case '~': // Capitalize (Roxen specific). m->case = "capitalize"; key = key[1..]; continue; case 'E': // Locale-dependent alternative form. alternative_form = 1; key = key[1..]; continue; case 'O': // Locale-dependent alternative numeric representation. alternative_numbers = 1; key = key[1..]; continue; // Formats. case 'a': // Abbreviated weekday name if (language) res += number2string(lt->wday+1,m,language(lang,"short_day",id)); else res += ({ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" })[lt->wday]; break; case 'A': // Weekday name if (language) res += number2string(lt->wday+1,m,language(lang,"day",id)); else res += ({ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" })[lt->wday]; break; case 'b': // Abbreviated month name case 'h': // Abbreviated month name if (language) res += number2string(lt->mon+1,m,language(lang,"short_month",id)); else res += ({ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" })[lt->mon]; break; case 'B': // Month name if (language) { if (alternative_form) { res += number2string(lt->mon+1,m,language(lang,"numbered_month",id)); } else { res += number2string(lt->mon+1,m,language(lang,"month",id)); } } else res += ({ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" })[lt->mon]; break; case 'c': // Date and time // FIXME: Should be preferred date and time for the locale. res += strftime(sprintf("%%a %%b %02d %02d:%02d:%02d %04d", lt->mday, lt->hour, lt->min, lt->sec, 1900 + lt->year), t); break; case 'C': // Century number; 0-prefix res += my_sprintf(prefix, "%02d", 19 + lt->year/100); break; case 'd': // Day of month [1,31]; 0-prefix res += my_sprintf(prefix, "%02d", lt->mday); break; case 'D': // Date as %m/%d/%y res += strftime("%m/%d/%y", t); break; case 'e': // Day of month [1,31]; space-prefix res += my_sprintf(prefix, "%2d", lt->mday); break; case 'F': // ISO 8601 date %Y-%m-%d res += sprintf("%04d-%02d-%02d", 1900 + lt->year, lt->mon + 1, lt->mday); break; case 'G': // Year for the ISO 8601 week containing the day. { int wday = (lt->wday + 1)%7; // ISO 8601 weekday number. if ((wday - lt->yday) >= 4) { // The day belongs to the last week of the previous year. res += my_sprintf(prefix, "%04d", 1899 + lt->year); } else if ((lt->mon == 11) && ((lt->mday - wday) >= 29)) { // The day belongs to the first week of the next year. res += my_sprintf(prefix, "%04d", 1901 + lt->year); } else { res += my_sprintf(prefix, "%04d", 1900 + lt->year); } } break; case 'g': // Short year for the ISO 8601 week containing the day. { int wday = (lt->wday + 1)%7; // ISO 8601 weekday number. if ((wday - lt->yday) >= 4) { // The day belongs to the last week of the previous year. res += my_sprintf(prefix, "%02d", (99 + lt->year) % 100); } else if ((lt->mon == 11) && ((lt->mday - wday) >= 29)) { // The day belongs to the first week of the next year. res += my_sprintf(prefix, "%02d", (1 + lt->year) % 100); } else { res += my_sprintf(prefix, "%02d", (lt->year) % 100); } } break; case 'H': // Hour (24-hour clock) [0,23]; 0-prefix res += my_sprintf(prefix, "%02d", lt->hour); break; case 'I': // Hour (12-hour clock) [1,12]; 0-prefix res += my_sprintf(prefix, "%02d", 1 + (lt->hour + 11)%12); break; case 'j': // Day number of year [1,366]; 0-prefix res += my_sprintf(prefix, "%03d", lt->yday); break; case 'k': // Hour (24-hour clock) [0,23]; space-prefix res += my_sprintf(prefix, "%2d", lt->hour); break; case 'l': // Hour (12-hour clock) [1,12]; space-prefix res += my_sprintf(prefix, "%2d", 1 + (lt->hour + 11)%12); break; case 'm': // Month number [1,12]; 0-prefix res += my_sprintf(prefix, "%02d", lt->mon + 1); break; case 'M': // Minute [00,59]; 0-prefix res += my_sprintf(prefix, "%02d", lt->min); break; case 'n': // Newline res += "\n"; break; case 'p': // a.m. or p.m. res += lt->hour<12 ? "a.m." : "p.m."; break; case 'P': // am or pm res += lt->hour<12 ? "am" : "pm"; break; case 'r': // Time in 12-hour clock format with %p res += strftime("%I:%M:%S %p", t); break; case 'R': // Time as %H:%M res += sprintf("%02d:%02d", lt->hour, lt->min); break; case 's': // Seconds since epoch. res += my_sprintf(prefix, "%d", t); break; case 'S': // Seconds [00,61]; 0-prefix res += my_sprintf(prefix, "%02d", lt->sec); break; case 't': // Tab res += "\t"; break; case 'T': // Time as %H:%M:%S case 'X': // FIXME: Time in locale preferred format. res += sprintf("%02d:%02d:%02d", lt->hour, lt->min, lt->sec); break; case 'u': // Weekday as a decimal number [1,7], Monday == 1 res += my_sprintf(prefix, "%d", 1 + ((lt->wday + 6) % 7)); break; case 'U': // Week number of current year [00,53]; 0-prefix // Sunday is first day of week. res += my_sprintf(prefix, "%02d", 1 + (lt->yday - lt->wday)/ 7); break; case 'V': // ISO week number of the year as a decimal number [01,53]; 0-prefix res += my_sprintf(prefix, "%02d", Calendar.ISO.Second(t)->week_no()); break; case 'w': // Weekday as a decimal number [0,6], Sunday == 0 res += my_sprintf(prefix, "%d", lt->wday); break; case 'W': // Week number of year as a decimal number [00,53], // with Monday as the first day of week 1; 0-prefix res += my_sprintf(prefix, "%02d", ((lt->yday+(5+lt->wday)%7)/7)); break; case 'x': // Date // FIXME: Locale preferred date format. res += strftime("%a %b %d %Y", t); break; case 'y': // Year [00,99]; 0-prefix res += my_sprintf(prefix, "%02d", lt->year % 100); break; case 'Y': // Year [0000.9999]; 0-prefix res += my_sprintf(prefix, "%04d", 1900 + lt->year); break; case 'z': // Time zone as hour offset from UTC. // Needed for RFC822 dates. { int minutes = lt->timezone/60; int hours = minutes/60; minutes -= hours * 60; res += my_sprintf(prefix, "%+05d%", hours*100 + minutes); } break; case 'Z': // FIXME: Time zone name or abbreviation, or no bytes if // no time zone information exists break; } res+=key[1..]; break; } } return replace(res, "\0", "%"); } RoxenModule get_module (string modname) //! Resolves a string as returned by get_modname to a module object if //! one exists. { string cname, mname; int mid = 0; if (sscanf (modname, "%s/%s", cname, mname) != 2 || !sizeof (cname) || !sizeof(mname)) return 0; sscanf (mname, "%s#%d", mname, mid); if (Configuration conf = roxen->get_configuration (cname)) if (mapping moddata = conf->modules[mname]) return moddata->copies[mid]; return 0; } string get_modname (RoxenModule module) //! Returns a string uniquely identifying the given module on the form //! `<config name>/<module short name>#<copy>'. { return module && module->module_identifier(); } string get_modfullname (RoxenModule module) //! This determines the full module (human-readable) name in //! approximately the same way as the config UI. Note that the //! returned string is text/html. { if (module) { string|mapping(string:string)|Locale.DeferredLocale name = 0; if (module->query) catch { mixed res = module->query ("_name"); if (res) name = (string) res; }; if (!(name && sizeof (name)) && module->query_name) name = module->query_name(); if (!(name && sizeof (name))) { name = [string]module->register_module()[1]; sscanf (module->module_local_id(), "%*s#%d", int mod_copy); if (mod_copy) name += " # " + mod_copy; } if (mappingp (name)) name = name->standard; return (string) name; } else return 0; } protected constant xml_invalid_mappings = ([ "\0":"\22000", "\1":"\22001", "\2":"\22002", "\3":"\22003", "\4":"\22004", "\5":"\22005", "\6":"\22006", "\7":"\22007", "\b":"\22010", "\13":"\22013", "\14":"\22014", "\16":"\22016", "\17":"\22017", "\20":"\22020", "\21":"\22021", "\22":"\22022", "\23":"\22023", "\24":"\22024", "\25":"\22025", "\26":"\22026", "\27":"\22027", "\30":"\22030", "\31":"\22031", "\32":"\22032", "\33":"\22033", "\34":"\22034", "\35":"\22035", "\36":"\22036", "\37":"\22037", "\177":"\22041", "\xFFFE":"", "\xFFFF":"" // Invalid unicode chars in XML! ]); string encode_xml_invalids(string s) //! Remap control characters not valid in XML-documents to their //! corresponding printable code points (@tt{U2400 - U2421@}). { return replace(s, xml_invalid_mappings); } //! Encode a single segment of @[roxen_encode()]. //! //! See @[roxen_encode()] for details. protected string low_roxen_encode(string val, string encoding) { switch (encoding) { case "": case "none": return val; case "utf8": case "utf-8": return string_to_utf8(val); case "-utf8": case "-utf-8": if( catch { return utf8_to_string(val); }) RXML.run_error("Cannot decode utf-8 string. Bad data.\n"); case "utf16": case "utf16be": return Charset.encoder("utf16be")->feed(val)->drain(); case "utf16le": return Charset.encoder("utf16le")->feed(val)->drain(); case "hex": if(String.width(val) > 8) RXML.run_error( "Cannot hex encode wide characters.\n" ); return String.string2hex(val); case "-hex": if( catch { return String.hex2string(val); }) RXML.run_error("Cannot decode hex string. Bad data.\n"); case "base64": case "base-64": case "b64": return MIME.encode_base64(val); case "-base64": case "-base-64": case "-b64": if( catch { return MIME.decode_base64(val); }) RXML.run_error("Cannot decode base64 string. Bad data.\n"); case "base64url": case "base-64-url": case "b64url": #if constant (MIME.encode_base64url) return MIME.encode_base64url(val); #else return replace (MIME.encode_base64 (val, 1), ([ "=": "", "+": "-", "/": "_" ])); #endif case "-base64url": case "-base-64-url": case "-b64url": if( catch { #if constant (MIME.decode_base64url) return MIME.decode_base64url(val); #else string data = replace (val, ([ "-": "+", "_": "/", "=": "" ])); data = (data + ("=" * (4-sizeof (data) % 4))); // Add padding. return MIME.decode_base64 (data); #endif }) RXML.run_error("Cannot decode base64 string. Bad data.\n"); case "md5": case "sha1": case "sha256": if (String.width(val) > 8) RXML.run_error("Cannot hash wide characters.\n"); return Crypto[upper_case(encoding)]->hash(val); case "quotedprintable": case "quoted-printable": case "qp": return MIME.encode_qp(val); case "http": return http_encode_invalids (val); case "cookie": return http_encode_cookie (val); case "url": return http_encode_url (val); case "wml-url": // Note: In 4.0 and earlier, this encoding was ambiguous since 8 // bit strings were %-encoded according to the ISO 8859-1 charset // while wider strings first were UTF-8 encoded and then // %-encoded. Although unlikely, it might be possible that the // old ambiguous encoding is the one mandated by the WAP/WML // standard - I haven't been able to verify it. /mast return http_encode_url(val); case "html": return html_encode_string (val); case "-html": // Can't use html_decode_string() which doesn't understand numerical // entities. return RXML.TXml()->decode_charrefs(val); case "invalids": case "xmlinvalids": case "xml-invalids": return encode_xml_invalids(val); case "wml": return replace(html_encode_string(val), "$", "$$"); case "dtag": // This is left for compatibility... return replace (val, "\"", "\"'\"'\""); case "stag": // This is left for compatibility return replace(val, "'", "'\"'\"'"); case "pike": return replace (val, ({ "\"", "\\", "\n" }), ({ "\\\"", "\\\\", "\\n" })); case "json": #if constant (Standards.JSON.escape_string) return Standards.JSON.escape_string (val); #else // Simpler variant for compat with older pikes. return replace(val, ({ "\"", "\\", "/", "\b", "\f", "\n", "\r", "\t", "\u2028", "\u2029", }), ({ "\\\"", "\\\\", "\\/", "\\b", "\\f", "\\n", "\\r", "\\t", "\\u2028", "\\u2029", })); #endif case "js": case "javascript": return replace (val, ({ "\b", "\014", "\n", "\r", "\t", "\\", "'", "\"", "\u2028", "\u2029", "</", "<!--"}), ({ "\\b", "\\f", "\\n", "\\r", "\\t", "\\\\", "\\'", "\\\"", "\\u2028", "\\u2029", "<\\/", "<\\!--" })); case "mysql": // Note: Quotes the single-quote (') in traditional sql-style, // for maximum compatibility with other sql databases. return replace (val, ({ "\"", "'", "\\" }), ({ "\\\"" , "''", "\\\\" }) ); case "sql": case "oracle": return replace (val, "'", "''"); case "bytea": return replace (val, ({ "'", "\\", "\0", "&" }), ({ "\\'", "\\\\\\\\", "\\\\000", "\\\\046" }) ); case "csv": if (sizeof(val) && ((<' ', '\t'>)[val[0]] || (<' ', '\t'>)[val[-1]] || has_value(val, ",") || has_value(val, ";") || has_value(val, "\"") || has_value(val, "\n"))) { return "\"" + replace(val, "\"", "\"\"") + "\""; } return val; case "mysql-dtag": // This is left for compatibility return replace (val, ({ "\"", "'", "\\" }), ({ "\\\"'\"'\"", "\\'", "\\\\" })); case "mysql-pike": return replace (val, ({ "\"", "'", "\\", "\n" }), ({ "\\\\\\\"", "\\\\'", "\\\\\\\\", "\\n" }) ); case "sql-dtag": case "oracle-dtag": // This is left for compatibility return replace (val, ({ "'", "\"" }), ({ "''", "\"'\"'\"" }) ); default: // Unknown encoding. Let the caller decide what to do with it. return 0; } } //! Quote strings in a multitude of ways. Used primarily by entity quoting. //! //! The @[encoding] string is split on @expr{"."@}, and encoded in order. //! //! The segments in the split @[encoding] string can be any of //! the following: //! @string //! @value "" //! @value "none" //! No encoding. //! //! @value "utf8" //! @value "utf-8" //! UTF-8 encoding. C.f. @[string_to_utf8]. //! //! @value "-utf8" //! @value "-utf-8" //! UTF-8 decoding. C.f. @[utf8_to_string]. //! //! @value "utf16" //! @value "utf16be" //! (Big endian) UTF-16 encoding. C.f. @[Charset], encoder //! @expr{"utf16be"@}. //! //! @value "utf16le" //! Little endian UTF-16 encoding. C.f. @[Charset], encoder //! @expr{"utf16le"@}. //! //! @value "hex" //! Hexadecimal encoding, e.g. @expr{"foo"@} is encoded to //! @expr{"666f6f"@}. Requires octet (i.e. non-wide) strings. //! C.f. @[String.string2hex]. //! //! @value "-hex" //! Hexadecimal decoding, e.g. @expr{"666f6f"@} is decoded to //! @expr{"foo"@}. //! C.f. @[String.hex2string]. //! //! @value "base64" //! @value "base-64" //! @value "b64" //! Base-64 MIME encoding. Requires octet (i.e. non-wide) strings. //! C.f. @[MIME.encode_base64]. //! //! @value "-base64" //! @value "-base-64" //! @value "-b64" //! Base-64 MIME decoding. //! C.f. @[MIME.decode_base64]. //! //! @value "md5" //! @value "sha1" //! @value "sha256" //! Message digest using supplied hash algorithm. Requires octet //! (i.e. non-wide) strings. Note that the result is a binary string //! so apply e.g. hex encoding afterward to get a printable value. //! C.f. @[Crypto.MD5.hash], @[Crypto.SHA1.hash] and //! @[Crypto.SHA256.hash]. //! //! @value "quotedprintable" //! @value "quoted-printable" //! @value "qp" //! Quoted-Printable MIME encoding. Requires octet (i.e. non-wide) //! strings. C.f. @[MIME.encode_qp]. //! //! @value "http" //! HTTP encoding (i.e. using @expr{%xx@} style escapes) of //! characters that never can occur verbatim in URLs. Other //! URL-special chars, including @expr{%@}, are not encoded. 8-bit //! and wider chars are encoded according to the IRI standard (RFC //! 3987). C.f. @[Roxen.http_encode_invalids]. //! //! @value "url" //! Similar to the @expr{"http"@} encoding, but encodes all URI //! reserved and excluded chars, that otherwise could have special //! meaning; see RFC 3986. This includes @expr{:@}, @expr{/@}, //! @expr{%@}, and quote chars. C.f. @[Roxen.http_encode_url]. //! //! @value "cookie" //! Nonstandard HTTP-style encoding for cookie values. The Roxen //! HTTP protocol module automatically decodes incoming cookies //! using this encoding, so by using this for @expr{Set-Cookie@} //! headers etc you will get back the original value in the //! @expr{cookie@} scope. Note that @[Roxen.set_cookie] and the //! RXML @expr{<set-cookie>@} tag already does this encoding for //! you. C.f. @[Roxen.http_encode_cookie]. //! //! @value "html" //! HTML encoding, for generic text in html documents. This means //! encoding chars like @expr{<@}, @expr{&@}, and quotes using //! character reference entities. //! //! @value "-html" //! HTML decoding of entities (literals and decimal/hexadecimal //! representations). //! //! @value "wml" //! HTML encoding, and doubling of any @tt{$@}'s. //! //! @value "csv" //! CSV (Comma Separated Values) encoding. Properly quotes all //! separator characters in CSV records (comma, semicolon, double-quotes //! leading spaces and newlines). //! //! @value "pike" //! Pike string quoting, for use in e.g. the @tt{<pike></pike>@} //! tag. This means backslash escapes for chars that cannot occur //! verbatim in Pike string literals. //! //! @value "json" //! JSON string quoting. Similar to the @expr{"js"@} quoting, //! but keeps strictly to RFC 4627. //! //! @value "js" //! @value "javascript" //! Javascript string quoting, i.e. using backslash escapes for //! @expr{"@}, @expr{\@}, and more. //! //! For safe use inside @tt{<script>@} elements, it quotes some //! additional character sequences: //! //! @ul //! @item //! @tt{</@} is quoted as @tt{<\/@} according to appendix B.3.2 //! in the HTML 4.01 spec. //! @item //! @tt{<!--@} is quoted as @tt{<\!--@} according to 4.3.1.2 in //! the HTML 5 spec. //! @endul //! //! Both are harmless in Javascript string literals in other //! contexts. //! //! @value "mysql" //! MySQL quoting. This also means backslash escapes, except the //! @expr{'@} character which is quoted in SQL style as //! @expr{''@}. //! //! @value "sql" //! @value "oracle" //! SQL/Oracle quoting, i.e. @expr{'@} is encoded as @expr{''@}. //! //! NOTE: Do NOT use this quoting method when creating //! sql-queries intended for MySQL! //! //! @value "bytea" //! PostgreSQL quoting for BYTEA (binary) values. //! //! @value "mysql-pike" //! Compat. MySQL quoting followed by Pike string quoting. //! Equvivalent to using @expr{"mysql.pike"@}. //! //! @value "wml-url" //! Compat alias for @expr{"url"@}. //! //! @value "dtag" //! @value "stag" //! Compat. @expr{"dtag"@} encodes @expr{"@} as @expr{"'"'"@}, and //! @expr{"stag"@} encodes @expr{'@} as @expr{'"'"'@}. They were //! used frequently before rxml 2.0 to quote rxml attributes, but //! are no longer necessary. //! //! @value "mysql-dtag" //! @value "sql-dtag" //! @value "oracle-dtag" //! Compat. Same as @expr{"mysql.dtag"@}, @expr{"sql.dtag"@}, and //! @expr{"oracle.dtag@}, respectively. //! @endstring //! //! Returns zero if the encoding isn't recognized. //! //! @example //! UTF8-encode a string for use in a Mysql query in an HTML page: //! @expr{roxen_encode(val, "utf8.mysql.html")@}. string roxen_encode(string val, string encoding) { foreach(encoding/".", string enc) { if (!(val = low_roxen_encode(val, enc))) return 0; } return val; } string fix_relative( string file, RequestID|void id ) //! Using @expr{@[id]->not_query@}, turns a relative (or already //! absolute) virtual path into an absolute virtual path, i.e. one //! rooted at the virtual server's root directory. The returned path //! is simplified to not contain any @expr{"."@} or @expr{".."@} //! segments. { Standards.URI uri = Standards.URI(":///"); if (id) { uri = Standards.URI(id->not_query, uri); } uri = Standards.URI(file, uri); if (uri->path != "") { // NB: Without the above test "" will expand to "/". // cf [bug 7566]. uri->path = (uri->combine_uri_path("", uri->path)/"/" - ({ ".." })) * "/"; } string res = sprintf("%s", uri); // +(id->misc->path_info?id->misc->path_info:"");

Roxen.git/ server/ etc/ modules/ Roxen.pmod > 9a2864e4aa152d820a4d66f3faecc1600c49c119 [Annotate]