Annotation of parser3/src/classes/file.C, revision 1.83
1.17 paf 1: /** @file
2: Parser: @b file parser class.
3:
1.71 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.72 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.17 paf 6:
1.83 ! paf 7: $Id: file.C,v 1.82 2002/06/11 12:20:41 paf Exp $
1.1 paf 8: */
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"
1.1 paf 15: #include "pa_request.h"
16: #include "pa_vfile.h"
1.11 paf 17: #include "pa_table.h"
1.21 paf 18: #include "pa_vint.h"
1.24 paf 19: #include "pa_exec.h"
1.40 parser 20: #include "pa_vdate.h"
1.47 parser 21: #include "pa_dir.h"
22: #include "pa_vtable.h"
1.67 paf 23: #include "pa_charset.h"
1.1 paf 24:
1.32 paf 25: // defines
26:
1.48 parser 27: #define TEXT_MODE_NAME "text"
28:
1.83 ! paf 29: // consts
! 30:
! 31: /// from apache-1.3|src|support|suexec.c
! 32: static const char *suexec_safe_env_lst[]={
! 33: "AUTH_TYPE",
! 34: "CONTENT_LENGTH",
! 35: "CONTENT_TYPE",
! 36: "DATE_GMT",
! 37: "DATE_LOCAL",
! 38: "DOCUMENT_NAME",
! 39: "DOCUMENT_PATH_INFO",
! 40: "DOCUMENT_ROOT",
! 41: "DOCUMENT_URI",
! 42: "FILEPATH_INFO",
! 43: "GATEWAY_INTERFACE",
! 44: "LAST_MODIFIED",
! 45: "PATH_INFO",
! 46: "PATH_TRANSLATED",
! 47: "QUERY_STRING",
! 48: "QUERY_STRING_UNESCAPED",
! 49: "REMOTE_ADDR",
! 50: "REMOTE_HOST",
! 51: "REMOTE_IDENT",
! 52: "REMOTE_PORT",
! 53: "REMOTE_USER",
! 54: "REDIRECT_QUERY_STRING",
! 55: "REDIRECT_STATUS",
! 56: "REDIRECT_URL",
! 57: "REQUEST_METHOD",
! 58: "REQUEST_URI",
! 59: "SCRIPT_FILENAME",
! 60: "SCRIPT_NAME",
! 61: "SCRIPT_URI",
! 62: "SCRIPT_URL",
! 63: "SERVER_ADMIN",
! 64: "SERVER_NAME",
! 65: "SERVER_ADDR",
! 66: "SERVER_PORT",
! 67: "SERVER_PROTOCOL",
! 68: "SERVER_SOFTWARE",
! 69: "UNIQUE_ID",
! 70: "USER_NAME",
! 71: "TZ",
! 72: NULL
! 73: };
! 74:
1.32 paf 75: // class
76:
77: class MFile : public Methoded {
78: public: // VStateless_class
79:
80: Value *create_new_value(Pool& pool) { return new(pool) VFile(pool); }
81:
1.33 paf 82: public: // Methoded
83: bool used_directly() { return true; }
84:
1.32 paf 85: public:
86: MFile(Pool& pool);
1.33 paf 87:
1.32 paf 88: };
89:
1.9 paf 90: // consts
91:
92: const int FIND_MONKEY_MAX_HOPS=10;
93:
1.1 paf 94: // methods
95:
1.26 paf 96: static void _save(Request& r, const String&, MethodParams *params) {
1.48 parser 97: Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
1.49 parser 98: Value& vfile_name=params->as_no_junction(1, "file name must not be code");
1.4 paf 99:
1.7 paf 100: // save
1.48 parser 101: static_cast<VFile *>(r.self)->save(r.absolute(vfile_name.as_string()),
102: vmode_name.as_string()==TEXT_MODE_NAME);
1.7 paf 103: }
104:
1.26 paf 105: static void _delete(Request& r, const String&, MethodParams *params) {
1.39 parser 106: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.7 paf 107:
108: // unlink
1.68 paf 109: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 110: }
111:
1.45 parser 112: static void _move(Request& r, const String&, MethodParams *params) {
113: Value& vfrom_file_name=params->as_no_junction(0, "from file name must not be code");
114: Value& vto_file_name=params->as_no_junction(1, "to file name must not be code");
115:
1.51 parser 116: // move
1.68 paf 117: file_move(
1.45 parser 118: r.absolute(vfrom_file_name.as_string()),
119: r.absolute(vto_file_name.as_string()));
120: }
121:
1.26 paf 122: static void _find(Request& r, const String& method_name, MethodParams *params) {
1.8 paf 123: Pool& pool=r.pool();
1.39 parser 124: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.8 paf 125:
1.18 paf 126: const String &lfile_name=vfile_name.as_string();
1.8 paf 127:
128: // passed file name simply exists in current dir
129: if(file_readable(r.absolute(lfile_name))) {
1.76 paf 130: r.write_no_lang(lfile_name);
1.8 paf 131: return;
132: }
133:
134: // scan .. dirs for result
1.9 paf 135: for(int i=0; i<FIND_MONKEY_MAX_HOPS; i++) {
1.76 paf 136: String local_test_name(pool);
1.8 paf 137: for(int j=0; j<i; j++)
1.76 paf 138: local_test_name.APPEND_CONST("../");
139: local_test_name.append(lfile_name, String::UL_CLEAN);
140: if(file_readable(r.absolute(local_test_name))) {
141: r.write_no_lang(*new(pool) String(local_test_name));
1.8 paf 142: return;
143: }
144: }
145:
146: // not found
147: if(params->size()==2) {
1.39 parser 148: Value& not_found_code=params->as_junction(1, "not-found param must be code");
1.77 paf 149: r.write_pass_lang(r.process(not_found_code));
1.8 paf 150: }
151: }
152:
1.26 paf 153: static void _load(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 154: Pool& pool=r.pool();
1.48 parser 155: Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
156: Value& vfile_name=params->as_no_junction(1, "file name must not be code");
1.9 paf 157:
1.18 paf 158: const String& lfile_name=vfile_name.as_string();
1.9 paf 159:
1.12 paf 160: void *data; size_t size;
1.48 parser 161: file_read(pool, r.absolute(lfile_name), data, size,
162: vmode_name.as_string()==TEXT_MODE_NAME);
1.9 paf 163:
1.61 paf 164: char *user_file_name=params->size()>2?
165: params->as_string(2, "filename must be string").cstr(String::UL_FILE_SPEC)
1.53 parser 166: :lfile_name.cstr(String::UL_FILE_SPEC);
1.10 paf 167:
1.21 paf 168: static_cast<VFile *>(r.self)->set(true/*tainted*/, data, size,
1.52 parser 169: user_file_name, new(pool) VString(r.mime_type_of(user_file_name)));
1.9 paf 170: }
171:
1.26 paf 172: static void _stat(Request& r, const String& method_name, MethodParams *params) {
1.25 paf 173: Pool& pool=r.pool();
1.39 parser 174: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.25 paf 175:
176: const String& lfile_name=vfile_name.as_string();
177:
1.40 parser 178: size_t size;
179: time_t atime, mtime, ctime;
180: file_stat(r.absolute(lfile_name),
181: size,
182: atime, mtime, ctime);
1.25 paf 183:
1.40 parser 184: VFile& vfile=*static_cast<VFile *>(r.self);
185: vfile.set(true/*tainted*/, 0/*no bytes*/, size);
186: Hash& ff=vfile.fields();
187: ff.put(*new(pool) String(pool, "adate"), new(pool) VDate(pool, atime));
188: ff.put(*new(pool) String(pool, "mdate"), new(pool) VDate(pool, mtime));
189: ff.put(*new(pool) String(pool, "cdate"), new(pool) VDate(pool, ctime));
1.25 paf 190: }
191:
1.83 ! paf 192: static bool is_safe_env_key(const char *key) {
! 193: if(strncmp(key, "HTTP_", 5)==0)
! 194: return true;
! 195: if(strncmp(key, "CGI_", 4)==0)
! 196: return true;
! 197: for(int i=0; suexec_safe_env_lst[i]; i++) {
! 198: if(strncmp(key, suexec_safe_env_lst[i], strlen(suexec_safe_env_lst[i]))==0)
! 199: return true;
! 200: }
! 201: return false;
! 202: }
1.22 paf 203: static void append_env_pair(const Hash::Key& key, Hash::Val *value, void *info) {
204: Hash& hash=*static_cast<Hash *>(info);
1.83 ! paf 205: if(is_safe_env_key(key.cstr()))
! 206: hash.put(key, &static_cast<Value *>(value)->as_string());
1.22 paf 207: }
1.29 paf 208: static void pass_cgi_header_attribute(Array::Item *value, void *info) {
209: String& string=*static_cast<String *>(value);
210: Hash& hash=*static_cast<Hash *>(info);
211: int colon_pos=string.pos(":", 1);
212: if(colon_pos>0)
1.30 paf 213: hash.put(string.mid(0, colon_pos),
214: new(string.pool()) VString(string.mid(colon_pos+1, string.size())));
1.29 paf 215: }
1.62 paf 216: /** @todo fix `` in perl - they produced flipping consoles and no output to perl
217: */
1.41 parser 218: static void _exec_cgi(Request& r, const String& method_name, MethodParams *params,
219: bool cgi) {
1.21 paf 220: Pool& pool=r.pool();
221:
1.39 parser 222: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.21 paf 223:
1.23 paf 224: const String& script_name=r.absolute(vfile_name.as_string());
225:
226: Hash env(pool);
1.62 paf 227: #define ECSTR(name, value_cstr) \
228: String name##key(pool, #name); \
229: String name##value(pool); \
230: if(value_cstr) { \
231: name##value.APPEND_CONST(value_cstr); \
232: env.put(name##key, &name##value); \
1.23 paf 233: }
1.82 paf 234: // passing SAPI::environment
235: if(const char *const *pairs=SAPI::environment(pool)) {
236: while(const char *pair=*pairs++)
237: if(const char *eq_at=strchr(pair, '=')) {
238: String& key=*new(pool) String(pool, pair, eq_at-pair);
239: String& value=*new(pool) String(pool, eq_at+1);
240: env.put(key, &value);
241: }
242: }
243:
1.23 paf 244: // const
1.63 paf 245: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 246: // from Request.info
1.62 paf 247: ECSTR(DOCUMENT_ROOT, r.info.document_root);
248: ECSTR(PATH_TRANSLATED, r.info.path_translated);
1.66 paf 249: ECSTR(REQUEST_METHOD, r.info.method);
1.62 paf 250: ECSTR(QUERY_STRING, r.info.query_string);
251: ECSTR(REQUEST_URI, r.info.uri);
252: ECSTR(CONTENT_TYPE, r.info.content_type);
1.23 paf 253: char content_length_cstr[MAX_NUMBER];
254: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.info.content_length);
255: String content_length(pool, content_length_cstr);
1.62 paf 256: ECSTR(CONTENT_LENGTH, content_length_cstr);
1.82 paf 257: // SCRIPT_*
1.63 paf 258: env.put(*new(pool) String(pool, "SCRIPT_NAME"), &script_name);
1.82 paf 259: //env.put(*new(pool) String(pool, "SCRIPT_FILENAME"), ??&script_name);
1.23 paf 260:
1.21 paf 261: if(params->size()>1) {
1.39 parser 262: Value& venv=params->as_no_junction(1, "env must not be code");
1.60 parser 263: if(Hash *user_env=venv.get_hash(&method_name))
1.23 paf 264: user_env->for_each(append_env_pair, &env);
1.21 paf 265: }
266:
267: Array *argv=0;
268: if(params->size()>2) {
269: argv=new(pool) Array(pool, params->size()-2);
270: for(int i=2; i<params->size(); i++)
1.58 parser 271: *argv+=¶ms->as_string(i, "parameter must be string");
1.21 paf 272: }
273:
1.57 parser 274: String in(pool);
275: in.APPEND(r.post_data, r.post_size, String::UL_CLEAN, "passing post data", 0);
1.21 paf 276: String out(pool);
1.31 paf 277: //out.APPEND_CONST("content-type:text/plain\nheader:test-header\n\ntest-body");
278: //out<<in;
1.27 paf 279: String& err=*new(pool) String(pool);
1.73 paf 280: int status=pa_exec(false/*forced_allow*/, script_name, &env, argv, in, out, err);
1.21 paf 281:
282: VFile& self=*static_cast<VFile *>(r.self);
283:
1.41 parser 284: const String *body=&out; // ^file:exec
285: if(cgi) { // ^file:cgi
286: // construct with 'out' body and header
287: int delim_size;
288: const char *eol_marker="\r\n"; size_t eol_marker_size=2;
289: int pos=out.pos("\r\n\r\n", delim_size=4);
290: if(pos<0) {
291: eol_marker="\n"; eol_marker_size=1;
292: pos=out.pos("\n\n", delim_size=2);
293: }
294: if(pos<0) {
295: delim_size=0; // calm down, compiler
1.74 paf 296: throw Exception(0,
1.41 parser 297: &method_name,
1.79 paf 298: "output does not contain CGI header; exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"",
1.46 parser 299: status,
300: (uint)out.size(), out.cstr(),
301: (uint)err.size(), err.cstr());
1.41 parser 302: }
1.21 paf 303:
1.41 parser 304: const String& header=out.mid(0, pos);
305: body=&out.mid(pos+delim_size, out.size());
1.30 paf 306:
1.41 parser 307: // header to $fields
308: {
309: Array rows(pool);
310: header.split(rows, 0, eol_marker, eol_marker_size, String::UL_CLEAN);
311: rows.for_each(pass_cgi_header_attribute, &self.fields());
312: }
1.29 paf 313: }
1.41 parser 314: // body
1.64 paf 315: self.set(false/*not tainted*/, body->cstr(), body->size());
1.21 paf 316:
1.42 parser 317: // $status
1.21 paf 318: self.fields().put(
1.42 parser 319: *new(pool) String(pool, "status"),
320: new(pool) VInt(pool, status));
1.21 paf 321:
322: // $stderr
323: if(err.size()) {
324: self.fields().put(
325: *new(pool) String(pool, "stderr"),
326: new(pool) VString(err));
327:
1.44 parser 328: SAPI::log(pool, "file:%s: %s", cgi?"cgi":"exec", err.cstr());
1.21 paf 329: }
330: }
1.41 parser 331: static void _exec(Request& r, const String& method_name, MethodParams *params) {
332: _exec_cgi(r, method_name, params, false);
333: }
334: static void _cgi(Request& r, const String& method_name, MethodParams *params) {
335: _exec_cgi(r, method_name, params, true);
336: }
337:
1.47 parser 338: static void _list(Request& r, const String& method_name, MethodParams *params) {
339: Pool& pool=r.pool();
340:
341: Value& relative_path=params->as_no_junction(0, "path must not be code");
342:
343: const String *regexp;
344: pcre *regexp_code;
1.81 paf 345: const int ovecsize=(1/*match*/)*3;
346: int ovector[ovecsize];
1.47 parser 347: if(params->size()>1) {
348: regexp=¶ms->as_no_junction(1, "regexp must not be code").as_string();
349:
1.64 paf 350: const char *pattern=regexp->cstr();
1.47 parser 351: const char *errptr;
352: int erroffset;
353: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
354: &errptr, &erroffset,
1.67 paf 355: pool.get_client_charset().pcre_tables);
1.47 parser 356:
357: if(!regexp_code)
1.74 paf 358: throw Exception(0,
1.47 parser 359: ®exp->mid(erroffset, regexp->size()),
360: "regular expression syntax error - %s", errptr);
361: } else
362: regexp_code=0;
363:
364:
365: const char* absolute_path_cstr=r.absolute(relative_path.as_string())
1.53 parser 366: .cstr(String::UL_FILE_SPEC);
1.47 parser 367:
368: Array& columns=*new(pool) Array(pool);
369: columns+=new(pool) String(pool, "name");
370: Table& table=*new(pool) Table(pool, &method_name, &columns);
371:
372: LOAD_DIR(absolute_path_cstr,
373: size_t file_name_size=strlen(ffblk.ff_name);
374: bool suits=true;
375: if(regexp_code) {
376: int exec_result=pcre_exec(regexp_code, 0,
377: ffblk.ff_name, file_name_size, 0,
378: 0, ovector, ovecsize);
379:
380: if(exec_result==PCRE_ERROR_NOMATCH)
381: suits=false;
382: else if(exec_result<0) {
383: (*pcre_free)(regexp_code);
1.74 paf 384: throw Exception(0,
1.47 parser 385: regexp,
386: "regular expression execute (%d)",
387: exec_result);
388: }
389: }
390:
391: if(suits) {
1.50 parser 392: char *file_name_cstr=(char *)pool.malloc(file_name_size);
1.47 parser 393: memcpy(file_name_cstr, ffblk.ff_name, file_name_size);
394: String &file_name=*new(pool) String(pool);
1.53 parser 395: file_name.APPEND(file_name_cstr, file_name_size, String::UL_FILE_SPEC,
1.47 parser 396: method_name.origin().file, method_name.origin().line);
397:
398: Array& row=*new(pool) Array(pool);
399: row+=&file_name;
400: table+=&row;
401: }
402: );
403:
404: if(regexp_code)
405: (*pcre_free)(regexp_code);
406:
1.60 parser 407: // write out result
1.47 parser 408: VTable& result=*new(pool) VTable(pool, &table);
409: r.write_no_lang(result);
410: }
1.21 paf 411:
1.69 paf 412: #ifndef DOXYGEN
413: struct Lock_execute_body_info {
414: Request *r;
415: Value *body_code;
416: };
417: #endif
418: static void lock_execute_body(int , void *context) {
419: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(context);
420:
421: // execute body
1.78 paf 422: info.r->write_assign_lang(info.r->process(*info.body_code));
1.69 paf 423: };
424: static void _lock(Request& r, const String& method_name, MethodParams *params) {
425: const String& file_spec=r.absolute(params->as_string(0, "file name must be string"));
426: Value& body_code=params->as_junction(1, "body must be code");
427:
428: Lock_execute_body_info info={&r, &body_code};
1.70 paf 429: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 430: }
431:
1.32 paf 432: // constructor
433:
1.80 paf 434: MFile::MFile(Pool& apool) : Methoded(apool, "file") {
1.48 parser 435: // ^save[mode;file-name]
436: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 437:
438: // ^delete[file-name]
1.32 paf 439: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 440:
441: // ^move[from-file-name;to-file-name]
442: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 443:
444: // ^find[file-name]
445: // ^find[file-name]{when-not-found}
1.32 paf 446: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.9 paf 447:
1.48 parser 448: // ^load[mode;disk-name]
449: // ^load[mode;disk-name;user-name]
450: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 451:
452: // ^stat[disk-name]
1.32 paf 453: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 454:
1.36 paf 455: // ^cgi[file-name]
456: // ^cgi[file-name;env hash]
457: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 458: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
459:
460: // ^exec[file-name]
461: // ^exec[file-name;env hash]
462: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
463: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 464:
465: // ^file:list[path]
466: // ^file:list[path][regexp]
467: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 468:
469: // ^file:lock[path]{code}
470: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.47 parser 471:
1.32 paf 472: }
473:
474: // global variable
475:
476: Methoded *file_class;
477:
478: // creator
479:
480: Methoded *MFile_create(Pool& pool) {
481: return file_class=new(pool) MFile(pool);
1.1 paf 482: }
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