Annotation of parser3/src/classes/file.C, revision 1.134
1.17 paf 1: /** @file
2: Parser: @b file parser class.
3:
1.120 paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.72 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.91 paf 6: */
1.17 paf 7:
1.134 ! paf 8: static const char * const IDENT_FILE_C="$Date: 2005/07/27 07:35:51 $";
1.47 parser 9:
10: #include "pa_config_includes.h"
11:
12: #include "pcre.h"
1.1 paf 13:
1.35 paf 14: #include "classes.h"
1.111 paf 15: #include "pa_vmethod_frame.h"
16:
1.1 paf 17: #include "pa_request.h"
18: #include "pa_vfile.h"
1.11 paf 19: #include "pa_table.h"
1.21 paf 20: #include "pa_vint.h"
1.24 paf 21: #include "pa_exec.h"
1.40 parser 22: #include "pa_vdate.h"
1.47 parser 23: #include "pa_dir.h"
24: #include "pa_vtable.h"
1.67 paf 25: #include "pa_charset.h"
1.109 paf 26: #include "pa_charsets.h"
1.121 paf 27: #include "pa_sql_connection.h"
1.1 paf 28:
1.32 paf 29: // defines
30:
1.48 parser 31: #define TEXT_MODE_NAME "text"
1.125 paf 32: #define BINARY_MODE_NAME "binary"
1.90 paf 33: #define STDIN_EXEC_PARAM_NAME "stdin"
1.109 paf 34: #define CHARSET_EXEC_PARAM_NAME "charset"
1.48 parser 35:
1.131 paf 36: #define NAME_NAME "name"
37:
1.132 paf 38: // externs
39:
40: extern String sql_limit_name;
41: extern String sql_offset_name;
42:
1.111 paf 43: // class
44:
45: class MFile: public Methoded {
46: public: // VStateless_class
47:
1.134 ! paf 48: Value* create_new_value(Pool&, HashStringValue&) { return new VFile(); }
1.111 paf 49:
50: public: // Methoded
51: bool used_directly() { return true; }
52:
53: public:
54: MFile();
55:
56: };
57:
58: // global variable
59:
60: DECLARE_CLASS_VAR(file, new MFile, 0);
61:
1.83 paf 62: // consts
63:
64: /// from apache-1.3|src|support|suexec.c
1.111 paf 65: static const char* suexec_safe_env_lst[]={
1.83 paf 66: "AUTH_TYPE",
67: "CONTENT_LENGTH",
68: "CONTENT_TYPE",
69: "DATE_GMT",
70: "DATE_LOCAL",
71: "DOCUMENT_NAME",
72: "DOCUMENT_PATH_INFO",
73: "DOCUMENT_ROOT",
74: "DOCUMENT_URI",
75: "FILEPATH_INFO",
76: "GATEWAY_INTERFACE",
77: "LAST_MODIFIED",
78: "PATH_INFO",
79: "PATH_TRANSLATED",
80: "QUERY_STRING",
81: "QUERY_STRING_UNESCAPED",
82: "REMOTE_ADDR",
83: "REMOTE_HOST",
84: "REMOTE_IDENT",
85: "REMOTE_PORT",
86: "REMOTE_USER",
87: "REDIRECT_QUERY_STRING",
88: "REDIRECT_STATUS",
89: "REDIRECT_URL",
90: "REQUEST_METHOD",
91: "REQUEST_URI",
92: "SCRIPT_FILENAME",
93: "SCRIPT_NAME",
94: "SCRIPT_URI",
95: "SCRIPT_URL",
96: "SERVER_ADMIN",
97: "SERVER_NAME",
98: "SERVER_ADDR",
99: "SERVER_PORT",
100: "SERVER_PROTOCOL",
101: "SERVER_SOFTWARE",
102: "UNIQUE_ID",
103: "USER_NAME",
104: "TZ",
105: NULL
106: };
107:
1.111 paf 108: // statics
1.33 paf 109:
1.112 paf 110: static const String::Body adate_name("adate");
111: static const String::Body mdate_name("mdate");
112: static const String::Body cdate_name("cdate");
1.32 paf 113:
1.1 paf 114: // methods
115:
1.125 paf 116: static bool is_text_mode(const String& mode) {
117: if(mode==TEXT_MODE_NAME)
118: return true;
119: if(mode==BINARY_MODE_NAME)
120: return false;
121: throw Exception("parser.runtime",
122: &mode,
123: "is invalid mode, must be either '"TEXT_MODE_NAME"' or '"BINARY_MODE_NAME"'");
124: }
125:
1.111 paf 126: static void _save(Request& r, MethodParams& params) {
127: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
128: Value& vfile_name=params.as_no_junction(1, "file name must not be code");
1.4 paf 129:
1.7 paf 130: // save
1.111 paf 131: GET_SELF(r, VFile).save(r.absolute(vfile_name.as_string()),
1.125 paf 132: is_text_mode(vmode_name.as_string()));
1.7 paf 133: }
134:
1.111 paf 135: static void _delete(Request& r, MethodParams& params) {
136: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.7 paf 137:
138: // unlink
1.68 paf 139: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 140: }
141:
1.111 paf 142: static void _move(Request& r, MethodParams& params) {
143: Value& vfrom_file_name=params.as_no_junction(0, "from file name must not be code");
144: Value& vto_file_name=params.as_no_junction(1, "to file name must not be code");
1.45 parser 145:
1.51 parser 146: // move
1.68 paf 147: file_move(
1.45 parser 148: r.absolute(vfrom_file_name.as_string()),
149: r.absolute(vto_file_name.as_string()));
150: }
151:
1.111 paf 152: static void _load_pass_param(
153: HashStringValue::key_type key,
154: HashStringValue::value_type value,
155: HashStringValue *dest) {
156: dest->put(key, value);
157: }
158: static void _load(Request& r, MethodParams& params) {
159: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
160: const String& lfile_name=r.absolute(params.as_no_junction(1, "file name must not be code").as_string());
161: Value* third_param=params.count()>2?¶ms.as_no_junction(2, "filename or options must not be code")
162: :0;
163: HashStringValue* third_param_hash=third_param?third_param->get_hash():0;
164: size_t alt_filename_param_index=2;
1.104 paf 165: if(third_param_hash)
166: alt_filename_param_index++;
1.9 paf 167:
1.132 paf 168: HashStringValue* options=third_param_hash;
169: size_t offset=0;
170: size_t limit=0;
171: if(options) {
172: options=new HashStringValue(*options);
173: if(Value *voffset=(Value *)options->get(sql_offset_name)) {
174: options->remove(sql_offset_name);
175: offset=r.process_to_value(*voffset).as_int();
176: }
177: if(Value *vlimit=(Value *)options->get(sql_limit_name)) {
178: options->remove(sql_limit_name);
179: limit=r.process_to_value(*vlimit).as_int();
180: }
181: // no check on options count here, see file_read
182: }
1.111 paf 183: File_read_result file=file_read(r.charsets, lfile_name,
1.125 paf 184: is_text_mode(vmode_name.as_string()),
1.132 paf 185: options, true, 0, offset, limit
1.104 paf 186: );
1.9 paf 187:
1.111 paf 188: const char *user_file_name=params.count()>alt_filename_param_index?
189: params.as_string(alt_filename_param_index, "filename must be string").cstr()
190: :lfile_name.cstr(String::L_FILE_SPEC);
191:
192: Value* vcontent_type=0;
193: if(file.headers)
1.129 paf 194: {
195: if(Value* remote_content_type=file.headers->get("CONTENT-TYPE"))
196: vcontent_type=new VString(*new String(remote_content_type->as_string().cstr()));
197: }
1.104 paf 198: if(!vcontent_type)
1.111 paf 199: vcontent_type=new VString(r.mime_type_of(user_file_name));
1.10 paf 200:
1.111 paf 201: VFile& self=GET_SELF(r, VFile);
202: self.set(true/*tainted*/, file.str, file.length, user_file_name, vcontent_type);
203: if(file.headers)
204: file.headers->for_each(_load_pass_param, &self.fields());
1.9 paf 205: }
206:
1.111 paf 207: static void _stat(Request& r, MethodParams& params) {
208: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.25 paf 209:
210: const String& lfile_name=vfile_name.as_string();
211:
1.40 parser 212: size_t size;
213: time_t atime, mtime, ctime;
214: file_stat(r.absolute(lfile_name),
215: size,
216: atime, mtime, ctime);
1.25 paf 217:
1.111 paf 218: VFile& self=GET_SELF(r, VFile);
219: self.set(true/*tainted*/, 0/*no bytes*/, size);
220: HashStringValue& ff=self.fields();
221: ff.put(adate_name, new VDate(atime));
222: ff.put(mdate_name, new VDate(mtime));
223: ff.put(cdate_name, new VDate(ctime));
224: ff.put(content_type_name, new VString(r.mime_type_of(lfile_name.cstr(String::L_FILE_SPEC))));
1.25 paf 225: }
226:
1.111 paf 227: static bool is_safe_env_key(const char* key) {
228: for(const char* validator=key; *validator; validator++) {
229: char c=*validator;
230: if(!(c>='A' && c<='Z' || c>='0' && c<='9' || c=='_' || c=='-'))
231: return false;
232: }
1.88 paf 233: if(strncasecmp(key, "HTTP_", 5)==0)
1.83 paf 234: return true;
1.87 paf 235: if(strncasecmp(key, "CGI_", 4)==0)
1.83 paf 236: return true;
237: for(int i=0; suexec_safe_env_lst[i]; i++) {
1.87 paf 238: if(strcasecmp(key, suexec_safe_env_lst[i])==0)
1.83 paf 239: return true;
240: }
241: return false;
242: }
1.90 paf 243: #ifndef DOXYGEN
244: struct Append_env_pair_info {
1.111 paf 245: HashStringString* env;
1.100 paf 246: Value* vstdin;
1.109 paf 247: Value* vcharset;
1.90 paf 248: };
249: #endif
1.111 paf 250: static void append_env_pair(
251: HashStringValue::key_type akey,
252: HashStringValue::value_type avalue,
253: Append_env_pair_info *info) {
254: if(akey==STDIN_EXEC_PARAM_NAME) {
255: info->vstdin=avalue;
256: } else if(akey==CHARSET_EXEC_PARAM_NAME) {
257: info->vcharset=avalue;
1.90 paf 258: } else {
1.111 paf 259: if(!is_safe_env_key(akey.cstr()))
1.90 paf 260: throw Exception("parser.runtime",
1.111 paf 261: new String(akey, String::L_TAINTED),
1.90 paf 262: "not safe environment variable");
1.133 paf 263: info->env->put(akey, avalue->as_string().cstr_to_string_body(String::L_UNSPECIFIED));
1.90 paf 264: }
1.22 paf 265: }
1.94 paf 266: #ifndef DOXYGEN
267: struct Pass_cgi_header_attribute_info {
1.111 paf 268: Charset* charset;
269: HashStringValue* fields;
270: Value* content_type;
1.94 paf 271: };
272: #endif
1.111 paf 273: static void pass_cgi_header_attribute(
274: ArrayString::element_type astring,
275: Pass_cgi_header_attribute_info* info) {
276: size_t colon_pos=astring->pos(':');
1.130 paf 277: if(colon_pos!=STRING_NOT_FOUND) {
1.111 paf 278: const String& key=astring->mid(0, colon_pos).change_case(
279: *info->charset, String::CC_UPPER);
1.130 paf 280: Value* value=new VString(astring->mid(colon_pos+1, astring->length()).trim());
1.111 paf 281: info->fields->put(key, value);
1.94 paf 282: if(key=="CONTENT-TYPE")
1.111 paf 283: info->content_type=value;
1.94 paf 284: }
1.29 paf 285: }
1.90 paf 286: /// @todo fix `` in perl - they produced flipping consoles and no output to perl
1.111 paf 287: static void _exec_cgi(Request& r, MethodParams& params,
1.41 parser 288: bool cgi) {
1.21 paf 289:
1.111 paf 290: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.21 paf 291:
1.23 paf 292: const String& script_name=r.absolute(vfile_name.as_string());
293:
1.111 paf 294: HashStringString env;
1.62 paf 295: #define ECSTR(name, value_cstr) \
1.111 paf 296: if(value_cstr) \
297: env.put( \
1.112 paf 298: String::Body(#name), \
299: String::Body(value_cstr, 0)); \
1.82 paf 300: // passing SAPI::environment
1.111 paf 301: if(const char *const *pairs=SAPI::environment(r.sapi_info)) {
302: while(const char* pair=*pairs++)
303: if(const char* eq_at=strchr(pair, '='))
304: if(eq_at[1]) // has value
305: env.put(
306: pa_strdup(pair, eq_at-pair),
307: pa_strdup(eq_at+1, 0));
1.82 paf 308: }
309:
1.23 paf 310: // const
1.63 paf 311: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 312: // from Request.info
1.111 paf 313: ECSTR(DOCUMENT_ROOT, r.request_info.document_root);
314: ECSTR(PATH_TRANSLATED, r.request_info.path_translated);
315: ECSTR(REQUEST_METHOD, r.request_info.method);
316: ECSTR(QUERY_STRING, r.request_info.query_string);
317: ECSTR(REQUEST_URI, r.request_info.uri);
318: ECSTR(CONTENT_TYPE, r.request_info.content_type);
1.23 paf 319: char content_length_cstr[MAX_NUMBER];
1.111 paf 320: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.request_info.content_length);
321: //String content_length(content_length_cstr);
1.62 paf 322: ECSTR(CONTENT_LENGTH, content_length_cstr);
1.82 paf 323: // SCRIPT_*
1.119 paf 324: env.put(String::Body("SCRIPT_NAME"), script_name);
325: //env.put(String::Body("SCRIPT_FILENAME"), ??&script_name);
1.23 paf 326:
1.111 paf 327: bool stdin_specified=false;
1.90 paf 328: // environment & stdin from param
1.111 paf 329: String *in=new String();
1.109 paf 330: Charset *charset=0; // default script works raw_in 'source' charset = no transcoding needed
1.111 paf 331: if(params.count()>1) {
332: Value& venv=params.as_no_junction(1, "env must not be code");
333: if(HashStringValue* user_env=venv.get_hash()) {
1.116 paf 334: Append_env_pair_info info={&env, 0, 0};
1.90 paf 335: user_env->for_each(append_env_pair, &info);
1.109 paf 336: // $.stdin
1.103 paf 337: if(info.vstdin) {
1.111 paf 338: stdin_specified=true;
339: if(const String* sstdin=info.vstdin->get_string()) {
340: in->append(*sstdin, String::L_CLEAN, true);
1.103 paf 341: } else
1.111 paf 342: if(VFile* vfile=static_cast<VFile *>(info.vstdin->as("file", false)))
343: in->append_know_length((const char* )vfile->value_ptr(), vfile->value_size(), String::L_TAINTED);
1.100 paf 344: else
345: throw Exception("parser.runtime",
1.111 paf 346: 0,
1.100 paf 347: STDIN_EXEC_PARAM_NAME " parameter must be string or file");
1.103 paf 348: }
1.109 paf 349: // $.charset
350: if(info.vcharset)
1.111 paf 351: charset=&charsets.get(info.vcharset->as_string()
352: .change_case(r.charsets.source(), String::CC_UPPER));
1.90 paf 353: }
1.21 paf 354: }
355:
1.90 paf 356: // argv from params
1.111 paf 357: ArrayString argv;
358: if(params.count()>2) {
359: for(size_t i=2; i<params.count(); i++)
360: argv+=¶ms.as_string(i, "parameter must be string");
1.21 paf 361: }
1.90 paf 362:
1.109 paf 363: // transcode if necessary
364: if(charset) {
1.111 paf 365: Charset::transcode(env, r.charsets.source(), *charset);
366: Charset::transcode(argv, r.charsets.source(), *charset);
367: in=&Charset::transcode(*in, r.charsets.source(), *charset);
368: }
369: // @todo
370: // ifdef WIN32 do OEM->ANSI transcode on some(.cmd?) programs to
371: // match silent conversion in OS
372:
373: // exec!
374: PA_exec_result execution=
375: pa_exec(false/*forced_allow*/, script_name, &env, argv, *in);
376:
377: String *real_out=&execution.out;
378: String *real_err=&execution.err;
379: // transcode if necessary
380: if(charset) {
381: real_out=&Charset::transcode(*real_out, *charset, r.charsets.source());
382: real_err=&Charset::transcode(*real_err, *charset, r.charsets.source());
1.109 paf 383: }
384:
1.111 paf 385: VFile& self=GET_SELF(r, VFile);
1.109 paf 386:
1.111 paf 387: const String* body=real_out; // ^file:exec
388: const char* eol_marker=0; size_t eol_marker_size;
389: const String* header=0;
1.41 parser 390: if(cgi) { // ^file:cgi
1.111 paf 391: // construct with 'out' body and header
392: size_t dos_pos=real_out->pos("\r\n\r\n", 4);
393: size_t unix_pos=real_out->pos("\n\n", 2);
394:
395: bool unix_header_break;
396: switch((dos_pos!=STRING_NOT_FOUND?10:00) + (unix_pos!=STRING_NOT_FOUND?01:00)) {
397: case 10: // dos
398: unix_header_break=false;
399: break;
400: case 01: // unix
401: unix_header_break=true;
402: break;
403: case 11: // dos & unix
404: unix_header_break=unix_pos<dos_pos;
405: break;
406: default: // 00
407: unix_header_break=false; // calm down, compiler
1.74 paf 408: throw Exception(0,
1.111 paf 409: 0,
1.90 paf 410: "output does not contain CGI header; "
411: "exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"",
1.111 paf 412: execution.status,
413: (uint)real_out->length(), real_out->cstr(),
414: (uint)real_err->length(), real_err->cstr());
415: break; //never reached
416: }
417:
418: int header_break_pos;
419: if(unix_header_break) {
420: header_break_pos=unix_pos;
421: eol_marker="\n"; eol_marker_size=1;
422: } else {
423: header_break_pos=dos_pos;
424: eol_marker="\r\n"; eol_marker_size=2;
425: }
1.21 paf 426:
1.109 paf 427: header=&real_out->mid(0, header_break_pos);
1.111 paf 428: body=&real_out->mid(header_break_pos+eol_marker_size*2, real_out->length());
1.29 paf 429: }
1.41 parser 430: // body
1.111 paf 431: self.set(false/*not tainted*/, body->cstr(), body->length());
1.94 paf 432:
433: // $fields << header
1.98 paf 434: if(header && eol_marker) {
1.111 paf 435: ArrayString rows;
436: size_t pos_after=0;
437: header->split(rows, pos_after, eol_marker);
1.116 paf 438: Pass_cgi_header_attribute_info info={0, 0, 0};
1.111 paf 439: info.charset=&r.charsets.source();
440: info.fields=&self.fields();
1.94 paf 441: rows.for_each(pass_cgi_header_attribute, &info);
442: if(info.content_type)
1.111 paf 443: self.fields().put(content_type_name, info.content_type);
1.94 paf 444: }
1.21 paf 445:
1.42 parser 446: // $status
1.111 paf 447: self.fields().put(file_status_name, new VInt(execution.status));
1.21 paf 448:
449: // $stderr
1.111 paf 450: if(real_err->length())
1.21 paf 451: self.fields().put(
1.119 paf 452: String::Body("stderr"),
1.111 paf 453: new VString(*real_err));
1.21 paf 454: }
1.111 paf 455: static void _exec(Request& r, MethodParams& params) {
456: _exec_cgi(r, params, false);
1.41 parser 457: }
1.111 paf 458: static void _cgi(Request& r, MethodParams& params) {
459: _exec_cgi(r, params, true);
1.41 parser 460: }
461:
1.111 paf 462: static void _list(Request& r, MethodParams& params) {
463: Value& relative_path=params.as_no_junction(0, "path must not be code");
1.47 parser 464:
1.111 paf 465: const String* regexp;
1.47 parser 466: pcre *regexp_code;
1.81 paf 467: const int ovecsize=(1/*match*/)*3;
468: int ovector[ovecsize];
1.111 paf 469: if(params.count()>1) {
470: regexp=¶ms.as_no_junction(1, "regexp must not be code").as_string();
1.47 parser 471:
1.111 paf 472: const char* pattern=regexp->cstr();
473: const char* errptr;
1.47 parser 474: int erroffset;
475: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
476: &errptr, &erroffset,
1.111 paf 477: r.charsets.source().pcre_tables);
1.47 parser 478:
479: if(!regexp_code)
1.74 paf 480: throw Exception(0,
1.111 paf 481: ®exp->mid(erroffset, regexp->length()),
1.47 parser 482: "regular expression syntax error - %s", errptr);
1.114 paf 483: } else {
484: regexp=0; // not used, just to calm down compiler
1.47 parser 485: regexp_code=0;
1.114 paf 486: }
1.47 parser 487:
488:
1.111 paf 489: const char* absolute_path_cstr=r.absolute(relative_path.as_string()).cstr(String::L_FILE_SPEC);
1.47 parser 490:
1.111 paf 491: Table::columns_type columns(new ArrayString);
492: *columns+=new String("name");
493: Table& table=*new Table(columns);
1.47 parser 494:
495: LOAD_DIR(absolute_path_cstr,
1.111 paf 496: const char* file_name_cstr=ffblk.ff_name;
497: size_t file_name_size=strlen(file_name_cstr);
1.47 parser 498: bool suits=true;
499: if(regexp_code) {
500: int exec_result=pcre_exec(regexp_code, 0,
501: ffblk.ff_name, file_name_size, 0,
502: 0, ovector, ovecsize);
503:
504: if(exec_result==PCRE_ERROR_NOMATCH)
505: suits=false;
506: else if(exec_result<0) {
507: (*pcre_free)(regexp_code);
1.74 paf 508: throw Exception(0,
1.47 parser 509: regexp,
510: "regular expression execute (%d)",
511: exec_result);
512: }
513: }
514:
515: if(suits) {
1.111 paf 516: Table::element_type row(new ArrayString);
517: *row+=new String(pa_strdup(file_name_cstr, file_name_size), file_name_size, true);
518: table+=row;
1.47 parser 519: }
520: );
521:
522: if(regexp_code)
1.111 paf 523: pcre_free(regexp_code);
1.47 parser 524:
1.60 parser 525: // write out result
1.111 paf 526: r.write_no_lang(*new VTable(&table));
1.47 parser 527: }
1.21 paf 528:
1.69 paf 529: #ifndef DOXYGEN
530: struct Lock_execute_body_info {
1.111 paf 531: Request* r;
532: Value* body_code;
1.69 paf 533: };
534: #endif
1.111 paf 535: static void lock_execute_body(int , void *ainfo) {
536: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(ainfo);
1.69 paf 537: // execute body
1.78 paf 538: info.r->write_assign_lang(info.r->process(*info.body_code));
1.69 paf 539: };
1.111 paf 540: static void _lock(Request& r, MethodParams& params) {
541: const String& file_spec=r.absolute(params.as_string(0, "file name must be string"));
1.116 paf 542: Lock_execute_body_info info={
543: &r,
1.117 paf 544: ¶ms.as_junction(1, "body must be code")
1.116 paf 545: };
1.69 paf 546:
1.70 paf 547: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 548: }
549:
1.111 paf 550: static int lastposafter(const String& s, size_t after, const char* substr, size_t substr_size, bool beforelast=false) {
1.114 paf 551: size_t size=0; // just to calm down compiler
1.89 paf 552: if(beforelast)
1.111 paf 553: size=s.length();
1.116 paf 554: size_t at;
1.112 paf 555: while((at=s.pos(String::Body(substr, substr_size), after))!=STRING_NOT_FOUND) {
1.89 paf 556: size_t newafter=at+substr_size/*skip substr*/;
557: if(beforelast && newafter==size)
558: break;
559: after=newafter;
560: }
561:
562: return after;
563: }
564:
1.111 paf 565: static void _find(Request& r, MethodParams& params) {
566: const String& file_name=params.as_no_junction(0, "file name must not be code").as_string();
567: const String* file_spec;
1.90 paf 568: if(file_name.first_char()=='/')
569: file_spec=&file_name;
570: else
1.111 paf 571: file_spec=&r.relative(r.request_info.uri, file_name);
1.90 paf 572:
573: // easy way
574: if(file_readable(r.absolute(*file_spec))) {
1.96 paf 575: r.write_assign_lang(*file_spec);
1.90 paf 576: return;
577: }
578:
579: // monkey way
580: int after_base_slash=lastposafter(*file_spec, 0, "/", 1);
1.111 paf 581: const String* dirname=&file_spec->mid(0, after_base_slash);
582: const String& basename=file_spec->mid(after_base_slash, file_spec->length());
1.90 paf 583:
584: int after_monkey_slash;
585: while((after_monkey_slash=lastposafter(*dirname, 0, "/", 1, true))>0) {
1.111 paf 586: String test_name;
587: test_name<<*(dirname=&dirname->mid(0, after_monkey_slash));
588: test_name<<basename;
589: if(file_readable(r.absolute(test_name))) {
590: r.write_assign_lang(test_name);
1.90 paf 591: return;
592: }
593: }
594:
595: // no way, not found
1.111 paf 596: if(params.count()==2) {
597: Value& not_found_code=params.as_junction(1, "not-found param must be code");
1.90 paf 598: r.write_pass_lang(r.process(not_found_code));
599: }
600: }
601:
1.111 paf 602: static void _dirname(Request& r, MethodParams& params) {
603: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 604: // /a/some.tar.gz > /a
605: // /a/b/ > /a
606: int afterslash=lastposafter(file_spec, 0, "/", 1, true);
607: if(afterslash>0)
608: r.write_assign_lang(file_spec.mid(0, afterslash==1?1:afterslash-1));
609: else
1.111 paf 610: r.write_assign_lang(String(".", 1));
1.89 paf 611: }
612:
1.111 paf 613: static void _basename(Request& r, MethodParams& params) {
614: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 615: // /a/some.tar.gz > some.tar.gz
616: int afterslash=lastposafter(file_spec, 0, "/", 1);
1.111 paf 617: r.write_assign_lang(file_spec.mid(afterslash, file_spec.length()));
1.89 paf 618: }
619:
1.111 paf 620: static void _justname(Request& r, MethodParams& params) {
621: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 622: // /a/some.tar.gz > some.tar
623: int afterslash=lastposafter(file_spec, 0, "/", 1);
624: int afterdot=lastposafter(file_spec, afterslash, ".", 1);
1.111 paf 625: r.write_assign_lang(file_spec.mid(afterslash, afterdot!=afterslash?afterdot-1:file_spec.length()));
1.89 paf 626: }
1.111 paf 627: static void _justext(Request& r, MethodParams& params) {
628: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 629: // /a/some.tar.gz > gz
630: int afterdot=lastposafter(file_spec, 0, ".", 1);
631: if(afterdot>0)
1.111 paf 632: r.write_assign_lang(file_spec.mid(afterdot, file_spec.length()));
1.89 paf 633: }
634:
1.111 paf 635: static void _fullpath(Request& r, MethodParams& params) {
636: const String& file_spec=params.as_string(0, "file name must be string");
637: const String* result;
1.102 paf 638: if(file_spec.first_char()=='/')
639: result=&file_spec;
640: else {
641: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
642: const String& full_disk_path=r.absolute(file_spec);
1.111 paf 643: size_t document_root_length=strlen(r.request_info.document_root);
1.106 paf 644:
645: if(document_root_length>0) {
1.111 paf 646: char last_char=r.request_info.document_root[document_root_length-1];
1.106 paf 647: if(last_char == '/' || last_char == '\\')
648: --document_root_length;
649: }
1.111 paf 650: result=&full_disk_path.mid(document_root_length, full_disk_path.length());
1.102 paf 651: }
652: r.write_assign_lang(*result);
653: }
654:
1.121 paf 655: static void _sql_string(Request& r, MethodParams&) {
656: VFile& self=GET_SELF(r, VFile);
657:
658: const char *quoted=r.connection()->quote(self.value_ptr(), self.value_size());
659: r.write_assign_lang(*new String(quoted));
660: }
1.89 paf 661:
1.122 paf 662: #ifndef DOXYGEN
663: class File_sql_event_handlers: public SQL_Driver_query_event_handlers {
664: const String& statement_string; const char* statement_cstr;
665: int got_columns;
666: int got_cells;
667: public:
668: String::C value;
1.131 paf 669: const String* user_file_name;
670: const String* user_content_type;
1.122 paf 671: public:
672: File_sql_event_handlers(
673: const String& astatement_string, const char* astatement_cstr):
674: statement_string(astatement_string), statement_cstr(astatement_cstr),
675: got_columns(0),
676: got_cells(0),
677: user_file_name(0),
678: user_content_type(0) {}
679:
680: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
681: if(got_columns++==3) {
682: error=SQL_Error("parser.runtime", "result must contain not more then 3 columns");
683: return true;
684: }
685: return false;
686: }
687: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
688: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
689: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
690: try {
691: switch(got_cells++) {
692: case 0:
693: value=String::C(str, length);
694: break;
695: case 1:
1.131 paf 696: if(!user_file_name) // user not specified?
697: user_file_name=new String(str, length, true);
1.122 paf 698: break;
699: case 2:
1.131 paf 700: if(!user_content_type) // user not specified?
701: user_content_type=new String(str, length, true);
1.122 paf 702: break;
703: default:
704: error=SQL_Error("parser.runtime", "result must not contain more then one row, three rows");
705: return true;
706: }
707: return false;
708: } catch(...) {
709: error=SQL_Error("exception occured in File_sql_event_handlers::add_row_cell");
710: return true;
711: }
712: }
713: };
714: #endif
715: static void _sql(Request& r, MethodParams& params) {
1.131 paf 716: Value& statement=params.as_junction(0, "statement must be code");
1.122 paf 717:
718: Temp_lang temp_lang(r, String::L_SQL);
719: const String& statement_string=r.process_to_string(statement);
720: const char* statement_cstr=
721: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
722: File_sql_event_handlers handlers(statement_string, statement_cstr);
1.131 paf 723:
724: if(params.count()>1)
725: if(HashStringValue* options=
726: params.as_no_junction(1, "param must not be code").get_hash()) {
727: int valid_options=0;
728: if(Value* vfilename=options->get(NAME_NAME)) {
729: valid_options++;
730: handlers.user_file_name=&vfilename->as_string();
731: }
732: if(Value* vcontent_type=options->get(CONTENT_TYPE_NAME)) {
733: valid_options++;
734: handlers.user_content_type=&vcontent_type->as_string();
735: }
736: if(valid_options!=options->count())
737: throw Exception("parser.runtime",
738: 0,
739: "called with invalid option");
740: }
741:
742:
1.122 paf 743: r.connection()->query(
1.123 paf 744: statement_cstr,
745: 0, 0,
746: 0, 0,
1.122 paf 747: handlers,
748: statement_string);
749:
750: if(!handlers.value)
751: throw Exception("parser.runtime",
752: 0,
753: "produced no result");
754:
1.131 paf 755: const char* user_file_name_cstr=handlers.user_file_name? handlers.user_file_name->cstr(): 0;
1.122 paf 756:
757: VString* vcontent_type=handlers.user_content_type?
758: new VString(*handlers.user_content_type)
759: : user_file_name_cstr?
760: new VString(r.mime_type_of(user_file_name_cstr))
761: : 0;
762: VFile& self=GET_SELF(r, VFile);
763: self.set(true/*tainted*/, handlers.value.str, handlers.value.length, user_file_name_cstr, vcontent_type);
764: }
765:
1.32 paf 766: // constructor
767:
1.111 paf 768: MFile::MFile(): Methoded("file") {
1.48 parser 769: // ^save[mode;file-name]
770: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 771:
772: // ^delete[file-name]
1.32 paf 773: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 774:
775: // ^move[from-file-name;to-file-name]
776: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 777:
1.48 parser 778: // ^load[mode;disk-name]
779: // ^load[mode;disk-name;user-name]
780: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 781:
782: // ^stat[disk-name]
1.32 paf 783: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 784:
1.36 paf 785: // ^cgi[file-name]
786: // ^cgi[file-name;env hash]
787: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 788: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
789:
790: // ^exec[file-name]
791: // ^exec[file-name;env hash]
792: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
793: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 794:
795: // ^file:list[path]
796: // ^file:list[path][regexp]
797: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 798:
799: // ^file:lock[path]{code}
800: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.90 paf 801:
802: // ^find[file-name]
803: // ^find[file-name]{when-not-found}
804: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.47 parser 805:
1.89 paf 806: // ^file:dirname[/a/some.tar.gz]=/a
807: // ^file:dirname[/a/b/]=/a
808: add_native_method("dirname", Method::CT_STATIC, _dirname, 1, 1);
809: // ^file:basename[/a/some.tar.gz]=some.tar.gz
810: add_native_method("basename", Method::CT_STATIC, _basename, 1, 1);
811: // ^file:justname[/a/some.tar.gz]=some.tar
812: add_native_method("justname", Method::CT_STATIC, _justname, 1, 1);
813: // ^file:justext[/a/some.tar.gz]=gz
814: add_native_method("justext", Method::CT_STATIC, _justext, 1, 1);
1.102 paf 815: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
816: add_native_method("fullpath", Method::CT_STATIC, _fullpath, 1, 1);
1.121 paf 817:
818: // ^file.sql-string[]
819: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.122 paf 820:
821: // ^file::sql[[alt_name]]{}
822: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.1 paf 823: }
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