Annotation of parser3/src/classes/file.C, revision 1.75
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:
1.75 ! paf 7: $Id: file.C,v 1.74 2002/03/27 15:30:33 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:
1.33 paf 25: // consts
26:
1.32 paf 27: // defines
28:
29: #define FILE_CLASS_NAME "file"
30:
1.48 parser 31: #define TEXT_MODE_NAME "text"
32:
1.32 paf 33: // class
34:
35: class MFile : public Methoded {
36: public: // VStateless_class
37:
38: Value *create_new_value(Pool& pool) { return new(pool) VFile(pool); }
39:
1.33 paf 40: public: // Methoded
41: bool used_directly() { return true; }
42:
1.32 paf 43: public:
44: MFile(Pool& pool);
1.33 paf 45:
1.32 paf 46: };
47:
1.9 paf 48: // consts
49:
50: const int FIND_MONKEY_MAX_HOPS=10;
51:
1.1 paf 52: // methods
53:
1.26 paf 54: static void _save(Request& r, const String&, MethodParams *params) {
1.48 parser 55: Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
1.49 parser 56: Value& vfile_name=params->as_no_junction(1, "file name must not be code");
1.4 paf 57:
1.7 paf 58: // save
1.48 parser 59: static_cast<VFile *>(r.self)->save(r.absolute(vfile_name.as_string()),
60: vmode_name.as_string()==TEXT_MODE_NAME);
1.7 paf 61: }
62:
1.26 paf 63: static void _delete(Request& r, const String&, MethodParams *params) {
1.39 parser 64: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.7 paf 65:
66: // unlink
1.68 paf 67: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 68: }
69:
1.45 parser 70: static void _move(Request& r, const String&, MethodParams *params) {
71: Value& vfrom_file_name=params->as_no_junction(0, "from file name must not be code");
72: Value& vto_file_name=params->as_no_junction(1, "to file name must not be code");
73:
1.51 parser 74: // move
1.68 paf 75: file_move(
1.45 parser 76: r.absolute(vfrom_file_name.as_string()),
77: r.absolute(vto_file_name.as_string()));
78: }
79:
1.26 paf 80: static void _find(Request& r, const String& method_name, MethodParams *params) {
1.8 paf 81: Pool& pool=r.pool();
1.39 parser 82: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.8 paf 83:
1.18 paf 84: const String &lfile_name=vfile_name.as_string();
1.8 paf 85:
86: // passed file name simply exists in current dir
87: if(file_readable(r.absolute(lfile_name))) {
88: r.write_no_lang(*new(pool) VString(lfile_name));
89: return;
90: }
91:
92: // scan .. dirs for result
1.9 paf 93: for(int i=0; i<FIND_MONKEY_MAX_HOPS; i++) {
1.8 paf 94: String test_name(pool);
95: for(int j=0; j<i; j++)
96: test_name.APPEND_CONST("../");
1.15 paf 97: test_name.append(lfile_name, String::UL_CLEAN);
1.8 paf 98: if(file_readable(r.absolute(test_name))) {
99: r.write_no_lang(*new(pool) VString(*new(pool) String(test_name)));
100: return;
101: }
102: }
103:
104: // not found
105: if(params->size()==2) {
1.39 parser 106: Value& not_found_code=params->as_junction(1, "not-found param must be code");
1.75 ! paf 107: r.write_pass_lang(r.process_to_value(not_found_code));
1.8 paf 108: }
109: }
110:
1.26 paf 111: static void _load(Request& r, const String& method_name, MethodParams *params) {
1.9 paf 112: Pool& pool=r.pool();
1.48 parser 113: Value& vmode_name=params-> as_no_junction(0, "mode must not be code");
114: Value& vfile_name=params->as_no_junction(1, "file name must not be code");
1.9 paf 115:
1.18 paf 116: const String& lfile_name=vfile_name.as_string();
1.9 paf 117:
1.12 paf 118: void *data; size_t size;
1.48 parser 119: file_read(pool, r.absolute(lfile_name), data, size,
120: vmode_name.as_string()==TEXT_MODE_NAME);
1.9 paf 121:
1.61 paf 122: char *user_file_name=params->size()>2?
123: params->as_string(2, "filename must be string").cstr(String::UL_FILE_SPEC)
1.53 parser 124: :lfile_name.cstr(String::UL_FILE_SPEC);
1.10 paf 125:
1.21 paf 126: static_cast<VFile *>(r.self)->set(true/*tainted*/, data, size,
1.52 parser 127: user_file_name, new(pool) VString(r.mime_type_of(user_file_name)));
1.9 paf 128: }
129:
1.26 paf 130: static void _stat(Request& r, const String& method_name, MethodParams *params) {
1.25 paf 131: Pool& pool=r.pool();
1.39 parser 132: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.25 paf 133:
134: const String& lfile_name=vfile_name.as_string();
135:
1.40 parser 136: size_t size;
137: time_t atime, mtime, ctime;
138: file_stat(r.absolute(lfile_name),
139: size,
140: atime, mtime, ctime);
1.25 paf 141:
1.40 parser 142: VFile& vfile=*static_cast<VFile *>(r.self);
143: vfile.set(true/*tainted*/, 0/*no bytes*/, size);
144: Hash& ff=vfile.fields();
145: ff.put(*new(pool) String(pool, "adate"), new(pool) VDate(pool, atime));
146: ff.put(*new(pool) String(pool, "mdate"), new(pool) VDate(pool, mtime));
147: ff.put(*new(pool) String(pool, "cdate"), new(pool) VDate(pool, ctime));
1.25 paf 148: }
149:
1.22 paf 150: static void append_env_pair(const Hash::Key& key, Hash::Val *value, void *info) {
151: Hash& hash=*static_cast<Hash *>(info);
152: hash.put(key, &static_cast<Value *>(value)->as_string());
153: }
1.29 paf 154:
155: static void pass_cgi_header_attribute(Array::Item *value, void *info) {
156: String& string=*static_cast<String *>(value);
157: Hash& hash=*static_cast<Hash *>(info);
158: int colon_pos=string.pos(":", 1);
159: if(colon_pos>0)
1.30 paf 160: hash.put(string.mid(0, colon_pos),
161: new(string.pool()) VString(string.mid(colon_pos+1, string.size())));
1.29 paf 162: }
1.62 paf 163: /** @todo fix `` in perl - they produced flipping consoles and no output to perl
164: @test EPASS, ECSTR [touched them when optimized hash]
165: */
1.41 parser 166: static void _exec_cgi(Request& r, const String& method_name, MethodParams *params,
167: bool cgi) {
1.21 paf 168: Pool& pool=r.pool();
169:
1.39 parser 170: Value& vfile_name=params->as_no_junction(0, "file name must not be code");
1.21 paf 171:
1.23 paf 172: const String& script_name=r.absolute(vfile_name.as_string());
173:
174: Hash env(pool);
1.62 paf 175: #define ECSTR(name, value_cstr) \
176: String name##key(pool, #name); \
177: String name##value(pool); \
178: if(value_cstr) { \
179: name##value.APPEND_CONST(value_cstr); \
180: env.put(name##key, &name##value); \
1.23 paf 181: }
1.62 paf 182: #define EPASS(name) \
183: String name##key(pool, #name); \
184: String name##value(pool); \
185: if(const char *value_cstr=SAPI::get_env(pool, #name)) { \
186: name##value.APPEND_CONST(value_cstr); \
187: env.put(name##key, &name##value); \
1.23 paf 188: }
189:
190: // const
1.63 paf 191: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 192: // from Request.info
1.62 paf 193: ECSTR(DOCUMENT_ROOT, r.info.document_root);
194: ECSTR(PATH_TRANSLATED, r.info.path_translated);
1.66 paf 195: ECSTR(REQUEST_METHOD, r.info.method);
1.62 paf 196: ECSTR(QUERY_STRING, r.info.query_string);
197: ECSTR(REQUEST_URI, r.info.uri);
198: ECSTR(CONTENT_TYPE, r.info.content_type);
1.23 paf 199: char content_length_cstr[MAX_NUMBER];
200: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.info.content_length);
201: String content_length(pool, content_length_cstr);
1.62 paf 202: ECSTR(CONTENT_LENGTH, content_length_cstr);
203: ECSTR(HTTP_COOKIE, r.info.cookie);
204: ECSTR(HTTP_USER_AGENT, r.info.user_agent);
1.23 paf 205: // passing some SAPI:get_env-s
1.66 paf 206: EPASS(SERVER_PROTOCOL);
1.62 paf 207: EPASS(SERVER_NAME);
208: EPASS(SERVER_PORT);
209: EPASS(HTTP_REFERER);
210: EPASS(REMOTE_ADDR);
211: EPASS(REMOTE_HOST);
212: EPASS(REMOTE_USER);
1.23 paf 213: // SCRIPT_NAME
1.63 paf 214: env.put(*new(pool) String(pool, "SCRIPT_NAME"), &script_name);
1.27 paf 215: #ifdef WIN32
216: // WIN32 shell
1.62 paf 217: EPASS(COMSPEC);
1.27 paf 218: #endif
1.23 paf 219:
1.21 paf 220: if(params->size()>1) {
1.39 parser 221: Value& venv=params->as_no_junction(1, "env must not be code");
1.60 parser 222: if(Hash *user_env=venv.get_hash(&method_name))
1.23 paf 223: user_env->for_each(append_env_pair, &env);
1.21 paf 224: }
225:
226: Array *argv=0;
227: if(params->size()>2) {
228: argv=new(pool) Array(pool, params->size()-2);
229: for(int i=2; i<params->size(); i++)
1.58 parser 230: *argv+=¶ms->as_string(i, "parameter must be string");
1.21 paf 231: }
232:
1.57 parser 233: String in(pool);
234: in.APPEND(r.post_data, r.post_size, String::UL_CLEAN, "passing post data", 0);
1.21 paf 235: String out(pool);
1.31 paf 236: //out.APPEND_CONST("content-type:text/plain\nheader:test-header\n\ntest-body");
237: //out<<in;
1.27 paf 238: String& err=*new(pool) String(pool);
1.73 paf 239: int status=pa_exec(false/*forced_allow*/, script_name, &env, argv, in, out, err);
1.21 paf 240:
241: VFile& self=*static_cast<VFile *>(r.self);
242:
1.41 parser 243: const String *body=&out; // ^file:exec
244: if(cgi) { // ^file:cgi
245: // construct with 'out' body and header
246: int delim_size;
247: const char *eol_marker="\r\n"; size_t eol_marker_size=2;
248: int pos=out.pos("\r\n\r\n", delim_size=4);
249: if(pos<0) {
250: eol_marker="\n"; eol_marker_size=1;
251: pos=out.pos("\n\n", delim_size=2);
252: }
253: if(pos<0) {
254: delim_size=0; // calm down, compiler
1.74 paf 255: throw Exception(0,
1.41 parser 256: &method_name,
1.46 parser 257: "output does not contain CGI header; exit code=%d; outsize=%u; out: \"%s\"; errsize=%u; err: \"%s\"",
258: status,
259: (uint)out.size(), out.cstr(),
260: (uint)err.size(), err.cstr());
1.41 parser 261: }
1.21 paf 262:
1.41 parser 263: const String& header=out.mid(0, pos);
264: body=&out.mid(pos+delim_size, out.size());
1.30 paf 265:
1.41 parser 266: // header to $fields
267: {
268: Array rows(pool);
269: header.split(rows, 0, eol_marker, eol_marker_size, String::UL_CLEAN);
270: rows.for_each(pass_cgi_header_attribute, &self.fields());
271: }
1.29 paf 272: }
1.41 parser 273: // body
1.64 paf 274: self.set(false/*not tainted*/, body->cstr(), body->size());
1.21 paf 275:
1.42 parser 276: // $status
1.21 paf 277: self.fields().put(
1.42 parser 278: *new(pool) String(pool, "status"),
279: new(pool) VInt(pool, status));
1.21 paf 280:
281: // $stderr
282: if(err.size()) {
283: self.fields().put(
284: *new(pool) String(pool, "stderr"),
285: new(pool) VString(err));
286:
1.44 parser 287: SAPI::log(pool, "file:%s: %s", cgi?"cgi":"exec", err.cstr());
1.21 paf 288: }
289: }
1.41 parser 290: static void _exec(Request& r, const String& method_name, MethodParams *params) {
291: _exec_cgi(r, method_name, params, false);
292: }
293: static void _cgi(Request& r, const String& method_name, MethodParams *params) {
294: _exec_cgi(r, method_name, params, true);
295: }
296:
1.47 parser 297: static void _list(Request& r, const String& method_name, MethodParams *params) {
298: Pool& pool=r.pool();
299:
300: Value& relative_path=params->as_no_junction(0, "path must not be code");
301:
302: const String *regexp;
303: pcre *regexp_code;
304: int ovecsize;
305: int *ovector;
306: if(params->size()>1) {
307: regexp=¶ms->as_no_junction(1, "regexp must not be code").as_string();
308:
1.64 paf 309: const char *pattern=regexp->cstr();
1.47 parser 310: const char *errptr;
311: int erroffset;
312: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
313: &errptr, &erroffset,
1.67 paf 314: pool.get_client_charset().pcre_tables);
1.47 parser 315:
316: if(!regexp_code)
1.74 paf 317: throw Exception(0,
1.47 parser 318: ®exp->mid(erroffset, regexp->size()),
319: "regular expression syntax error - %s", errptr);
320:
1.50 parser 321: ovector=(int *)pool.malloc(sizeof(int)*(ovecsize=(1/*match*/)*3));
1.47 parser 322: } else
323: regexp_code=0;
324:
325:
326: const char* absolute_path_cstr=r.absolute(relative_path.as_string())
1.53 parser 327: .cstr(String::UL_FILE_SPEC);
1.47 parser 328:
329: Array& columns=*new(pool) Array(pool);
330: columns+=new(pool) String(pool, "name");
331: Table& table=*new(pool) Table(pool, &method_name, &columns);
332:
333: LOAD_DIR(absolute_path_cstr,
334: size_t file_name_size=strlen(ffblk.ff_name);
335: bool suits=true;
336: if(regexp_code) {
337: int exec_result=pcre_exec(regexp_code, 0,
338: ffblk.ff_name, file_name_size, 0,
339: 0, ovector, ovecsize);
340:
341: if(exec_result==PCRE_ERROR_NOMATCH)
342: suits=false;
343: else if(exec_result<0) {
344: (*pcre_free)(regexp_code);
1.74 paf 345: throw Exception(0,
1.47 parser 346: regexp,
347: "regular expression execute (%d)",
348: exec_result);
349: }
350: }
351:
352: if(suits) {
1.50 parser 353: char *file_name_cstr=(char *)pool.malloc(file_name_size);
1.47 parser 354: memcpy(file_name_cstr, ffblk.ff_name, file_name_size);
355: String &file_name=*new(pool) String(pool);
1.53 parser 356: file_name.APPEND(file_name_cstr, file_name_size, String::UL_FILE_SPEC,
1.47 parser 357: method_name.origin().file, method_name.origin().line);
358:
359: Array& row=*new(pool) Array(pool);
360: row+=&file_name;
361: table+=&row;
362: }
363: );
364:
365: if(regexp_code)
366: (*pcre_free)(regexp_code);
367:
1.60 parser 368: // write out result
1.47 parser 369: VTable& result=*new(pool) VTable(pool, &table);
370: result.set_name(method_name);
371: r.write_no_lang(result);
372: }
1.21 paf 373:
1.69 paf 374: #ifndef DOXYGEN
375: struct Lock_execute_body_info {
376: Request *r;
377: Value *body_code;
378: };
379: #endif
380: static void lock_execute_body(int , void *context) {
381: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(context);
382:
383: // execute body
1.75 ! paf 384: info.r->write_assign_lang(info.r->process_to_string(*info.body_code));
1.69 paf 385: };
386: static void _lock(Request& r, const String& method_name, MethodParams *params) {
387: const String& file_spec=r.absolute(params->as_string(0, "file name must be string"));
388: Value& body_code=params->as_junction(1, "body must be code");
389:
390: Lock_execute_body_info info={&r, &body_code};
1.70 paf 391: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 392: }
393:
1.32 paf 394: // constructor
395:
396: MFile::MFile(Pool& apool) : Methoded(apool) {
397: set_name(*NEW String(pool(), FILE_CLASS_NAME));
398:
1.1 paf 399:
1.48 parser 400: // ^save[mode;file-name]
401: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 402:
403: // ^delete[file-name]
1.32 paf 404: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 405:
406: // ^move[from-file-name;to-file-name]
407: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 408:
409: // ^find[file-name]
410: // ^find[file-name]{when-not-found}
1.32 paf 411: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.9 paf 412:
1.48 parser 413: // ^load[mode;disk-name]
414: // ^load[mode;disk-name;user-name]
415: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 416:
417: // ^stat[disk-name]
1.32 paf 418: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 419:
1.36 paf 420: // ^cgi[file-name]
421: // ^cgi[file-name;env hash]
422: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 423: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
424:
425: // ^exec[file-name]
426: // ^exec[file-name;env hash]
427: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
428: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 429:
430: // ^file:list[path]
431: // ^file:list[path][regexp]
432: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 433:
434: // ^file:lock[path]{code}
435: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.47 parser 436:
1.32 paf 437: }
438:
439: // global variable
440:
441: Methoded *file_class;
442:
443: // creator
444:
445: Methoded *MFile_create(Pool& pool) {
446: return file_class=new(pool) MFile(pool);
1.1 paf 447: }
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