Annotation of parser3/src/classes/file.C, revision 1.128
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:
1.128 ! paf 8: static const char * const IDENT_FILE_C="$Date: 2004/07/26 10:48:58 $";
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:
1.111 paf 36: // class
37:
38: class MFile: public Methoded {
39: public: // VStateless_class
40:
1.114 paf 41: Value* create_new_value(Pool&) { return new VFile(); }
1.111 paf 42:
43: public: // Methoded
44: bool used_directly() { return true; }
45:
46: public:
47: MFile();
48:
49: };
50:
51: // global variable
52:
53: DECLARE_CLASS_VAR(file, new MFile, 0);
54:
1.83 paf 55: // consts
56:
57: /// from apache-1.3|src|support|suexec.c
1.111 paf 58: static const char* suexec_safe_env_lst[]={
1.83 paf 59: "AUTH_TYPE",
60: "CONTENT_LENGTH",
61: "CONTENT_TYPE",
62: "DATE_GMT",
63: "DATE_LOCAL",
64: "DOCUMENT_NAME",
65: "DOCUMENT_PATH_INFO",
66: "DOCUMENT_ROOT",
67: "DOCUMENT_URI",
68: "FILEPATH_INFO",
69: "GATEWAY_INTERFACE",
70: "LAST_MODIFIED",
71: "PATH_INFO",
72: "PATH_TRANSLATED",
73: "QUERY_STRING",
74: "QUERY_STRING_UNESCAPED",
75: "REMOTE_ADDR",
76: "REMOTE_HOST",
77: "REMOTE_IDENT",
78: "REMOTE_PORT",
79: "REMOTE_USER",
80: "REDIRECT_QUERY_STRING",
81: "REDIRECT_STATUS",
82: "REDIRECT_URL",
83: "REQUEST_METHOD",
84: "REQUEST_URI",
85: "SCRIPT_FILENAME",
86: "SCRIPT_NAME",
87: "SCRIPT_URI",
88: "SCRIPT_URL",
89: "SERVER_ADMIN",
90: "SERVER_NAME",
91: "SERVER_ADDR",
92: "SERVER_PORT",
93: "SERVER_PROTOCOL",
94: "SERVER_SOFTWARE",
95: "UNIQUE_ID",
96: "USER_NAME",
97: "TZ",
98: NULL
99: };
100:
1.111 paf 101: // statics
1.33 paf 102:
1.112 paf 103: static const String::Body adate_name("adate");
104: static const String::Body mdate_name("mdate");
105: static const String::Body cdate_name("cdate");
1.32 paf 106:
1.1 paf 107: // methods
108:
1.125 paf 109: static bool is_text_mode(const String& mode) {
110: if(mode==TEXT_MODE_NAME)
111: return true;
112: if(mode==BINARY_MODE_NAME)
113: return false;
114: throw Exception("parser.runtime",
115: &mode,
116: "is invalid mode, must be either '"TEXT_MODE_NAME"' or '"BINARY_MODE_NAME"'");
117: }
118:
1.111 paf 119: static void _save(Request& r, MethodParams& params) {
120: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
121: Value& vfile_name=params.as_no_junction(1, "file name must not be code");
1.4 paf 122:
1.7 paf 123: // save
1.111 paf 124: GET_SELF(r, VFile).save(r.absolute(vfile_name.as_string()),
1.125 paf 125: is_text_mode(vmode_name.as_string()));
1.7 paf 126: }
127:
1.111 paf 128: static void _delete(Request& r, MethodParams& params) {
129: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.7 paf 130:
131: // unlink
1.68 paf 132: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 133: }
134:
1.111 paf 135: static void _move(Request& r, MethodParams& params) {
136: Value& vfrom_file_name=params.as_no_junction(0, "from file name must not be code");
137: Value& vto_file_name=params.as_no_junction(1, "to file name must not be code");
1.45 parser 138:
1.51 parser 139: // move
1.68 paf 140: file_move(
1.45 parser 141: r.absolute(vfrom_file_name.as_string()),
142: r.absolute(vto_file_name.as_string()));
143: }
144:
1.111 paf 145: static void _load_pass_param(
146: HashStringValue::key_type key,
147: HashStringValue::value_type value,
148: HashStringValue *dest) {
149: dest->put(key, value);
150: }
151: static void _load(Request& r, MethodParams& params) {
152: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
153: const String& lfile_name=r.absolute(params.as_no_junction(1, "file name must not be code").as_string());
154: Value* third_param=params.count()>2?¶ms.as_no_junction(2, "filename or options must not be code")
155: :0;
156: HashStringValue* third_param_hash=third_param?third_param->get_hash():0;
157: size_t alt_filename_param_index=2;
1.104 paf 158: if(third_param_hash)
159: alt_filename_param_index++;
1.9 paf 160:
1.111 paf 161: File_read_result file=file_read(r.charsets, lfile_name,
1.125 paf 162: is_text_mode(vmode_name.as_string()),
1.111 paf 163: third_param_hash
1.104 paf 164: );
1.9 paf 165:
1.111 paf 166: const char *user_file_name=params.count()>alt_filename_param_index?
167: params.as_string(alt_filename_param_index, "filename must be string").cstr()
168: :lfile_name.cstr(String::L_FILE_SPEC);
169:
170: Value* vcontent_type=0;
171: if(file.headers)
1.128 ! paf 172: vcontent_type=file.headers->get("CONTENT-TYPE");
1.104 paf 173: if(!vcontent_type)
1.111 paf 174: vcontent_type=new VString(r.mime_type_of(user_file_name));
1.10 paf 175:
1.111 paf 176: VFile& self=GET_SELF(r, VFile);
177: self.set(true/*tainted*/, file.str, file.length, user_file_name, vcontent_type);
178: if(file.headers)
179: file.headers->for_each(_load_pass_param, &self.fields());
1.9 paf 180: }
181:
1.111 paf 182: static void _stat(Request& r, MethodParams& params) {
183: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.25 paf 184:
185: const String& lfile_name=vfile_name.as_string();
186:
1.40 parser 187: size_t size;
188: time_t atime, mtime, ctime;
189: file_stat(r.absolute(lfile_name),
190: size,
191: atime, mtime, ctime);
1.25 paf 192:
1.111 paf 193: VFile& self=GET_SELF(r, VFile);
194: self.set(true/*tainted*/, 0/*no bytes*/, size);
195: HashStringValue& ff=self.fields();
196: ff.put(adate_name, new VDate(atime));
197: ff.put(mdate_name, new VDate(mtime));
198: ff.put(cdate_name, new VDate(ctime));
199: ff.put(content_type_name, new VString(r.mime_type_of(lfile_name.cstr(String::L_FILE_SPEC))));
1.25 paf 200: }
201:
1.111 paf 202: static bool is_safe_env_key(const char* key) {
203: for(const char* validator=key; *validator; validator++) {
204: char c=*validator;
205: if(!(c>='A' && c<='Z' || c>='0' && c<='9' || c=='_' || c=='-'))
206: return false;
207: }
1.88 paf 208: if(strncasecmp(key, "HTTP_", 5)==0)
1.83 paf 209: return true;
1.87 paf 210: if(strncasecmp(key, "CGI_", 4)==0)
1.83 paf 211: return true;
212: for(int i=0; suexec_safe_env_lst[i]; i++) {
1.87 paf 213: if(strcasecmp(key, suexec_safe_env_lst[i])==0)
1.83 paf 214: return true;
215: }
216: return false;
217: }
1.90 paf 218: #ifndef DOXYGEN
219: struct Append_env_pair_info {
1.111 paf 220: HashStringString* env;
1.100 paf 221: Value* vstdin;
1.109 paf 222: Value* vcharset;
1.90 paf 223: };
224: #endif
1.111 paf 225: static void append_env_pair(
226: HashStringValue::key_type akey,
227: HashStringValue::value_type avalue,
228: Append_env_pair_info *info) {
229: if(akey==STDIN_EXEC_PARAM_NAME) {
230: info->vstdin=avalue;
231: } else if(akey==CHARSET_EXEC_PARAM_NAME) {
232: info->vcharset=avalue;
1.90 paf 233: } else {
1.111 paf 234: if(!is_safe_env_key(akey.cstr()))
1.90 paf 235: throw Exception("parser.runtime",
1.111 paf 236: new String(akey, String::L_TAINTED),
1.90 paf 237: "not safe environment variable");
1.124 paf 238: info->env->put(akey, avalue->as_string().cstr(String::L_UNSPECIFIED));
1.90 paf 239: }
1.22 paf 240: }
1.94 paf 241: #ifndef DOXYGEN
242: struct Pass_cgi_header_attribute_info {
1.111 paf 243: Charset* charset;
244: HashStringValue* fields;
245: Value* content_type;
1.94 paf 246: };
247: #endif
1.111 paf 248: static void pass_cgi_header_attribute(
249: ArrayString::element_type astring,
250: Pass_cgi_header_attribute_info* info) {
251: size_t colon_pos=astring->pos(':');
252: if(colon_pos==STRING_NOT_FOUND) {
253: const String& key=astring->mid(0, colon_pos).change_case(
254: *info->charset, String::CC_UPPER);
255: Value* value=new VString(astring->mid(colon_pos+1, astring->length()));
256: info->fields->put(key, value);
1.94 paf 257: if(key=="CONTENT-TYPE")
1.111 paf 258: info->content_type=value;
1.94 paf 259: }
1.29 paf 260: }
1.90 paf 261: /// @todo fix `` in perl - they produced flipping consoles and no output to perl
1.111 paf 262: static void _exec_cgi(Request& r, MethodParams& params,
1.41 parser 263: bool cgi) {
1.21 paf 264:
1.111 paf 265: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.21 paf 266:
1.23 paf 267: const String& script_name=r.absolute(vfile_name.as_string());
268:
1.111 paf 269: HashStringString env;
1.62 paf 270: #define ECSTR(name, value_cstr) \
1.111 paf 271: if(value_cstr) \
272: env.put( \
1.112 paf 273: String::Body(#name), \
274: String::Body(value_cstr, 0)); \
1.82 paf 275: // passing SAPI::environment
1.111 paf 276: if(const char *const *pairs=SAPI::environment(r.sapi_info)) {
277: while(const char* pair=*pairs++)
278: if(const char* eq_at=strchr(pair, '='))
279: if(eq_at[1]) // has value
280: env.put(
281: pa_strdup(pair, eq_at-pair),
282: pa_strdup(eq_at+1, 0));
1.82 paf 283: }
284:
1.23 paf 285: // const
1.63 paf 286: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 287: // from Request.info
1.111 paf 288: ECSTR(DOCUMENT_ROOT, r.request_info.document_root);
289: ECSTR(PATH_TRANSLATED, r.request_info.path_translated);
290: ECSTR(REQUEST_METHOD, r.request_info.method);
291: ECSTR(QUERY_STRING, r.request_info.query_string);
292: ECSTR(REQUEST_URI, r.request_info.uri);
293: ECSTR(CONTENT_TYPE, r.request_info.content_type);
1.23 paf 294: char content_length_cstr[MAX_NUMBER];
1.111 paf 295: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.request_info.content_length);
296: //String content_length(content_length_cstr);
1.62 paf 297: ECSTR(CONTENT_LENGTH, content_length_cstr);
1.82 paf 298: // SCRIPT_*
1.119 paf 299: env.put(String::Body("SCRIPT_NAME"), script_name);
300: //env.put(String::Body("SCRIPT_FILENAME"), ??&script_name);
1.23 paf 301:
1.111 paf 302: bool stdin_specified=false;
1.90 paf 303: // environment & stdin from param
1.111 paf 304: String *in=new String();
1.109 paf 305: Charset *charset=0; // default script works raw_in 'source' charset = no transcoding needed
1.111 paf 306: if(params.count()>1) {
307: Value& venv=params.as_no_junction(1, "env must not be code");
308: if(HashStringValue* user_env=venv.get_hash()) {
1.116 paf 309: Append_env_pair_info info={&env, 0, 0};
1.90 paf 310: user_env->for_each(append_env_pair, &info);
1.109 paf 311: // $.stdin
1.103 paf 312: if(info.vstdin) {
1.111 paf 313: stdin_specified=true;
314: if(const String* sstdin=info.vstdin->get_string()) {
315: in->append(*sstdin, String::L_CLEAN, true);
1.103 paf 316: } else
1.111 paf 317: if(VFile* vfile=static_cast<VFile *>(info.vstdin->as("file", false)))
318: in->append_know_length((const char* )vfile->value_ptr(), vfile->value_size(), String::L_TAINTED);
1.100 paf 319: else
320: throw Exception("parser.runtime",
1.111 paf 321: 0,
1.100 paf 322: STDIN_EXEC_PARAM_NAME " parameter must be string or file");
1.103 paf 323: }
1.109 paf 324: // $.charset
325: if(info.vcharset)
1.111 paf 326: charset=&charsets.get(info.vcharset->as_string()
327: .change_case(r.charsets.source(), String::CC_UPPER));
1.90 paf 328: }
1.21 paf 329: }
330:
1.90 paf 331: // argv from params
1.111 paf 332: ArrayString argv;
333: if(params.count()>2) {
334: for(size_t i=2; i<params.count(); i++)
335: argv+=¶ms.as_string(i, "parameter must be string");
1.21 paf 336: }
1.90 paf 337:
1.109 paf 338: // transcode if necessary
339: if(charset) {
1.111 paf 340: Charset::transcode(env, r.charsets.source(), *charset);
341: Charset::transcode(argv, r.charsets.source(), *charset);
342: in=&Charset::transcode(*in, r.charsets.source(), *charset);
343: }
344: // @todo
345: // ifdef WIN32 do OEM->ANSI transcode on some(.cmd?) programs to
346: // match silent conversion in OS
347:
348: // exec!
349: PA_exec_result execution=
350: pa_exec(false/*forced_allow*/, script_name, &env, argv, *in);
351:
352: String *real_out=&execution.out;
353: String *real_err=&execution.err;
354: // transcode if necessary
355: if(charset) {
356: real_out=&Charset::transcode(*real_out, *charset, r.charsets.source());
357: real_err=&Charset::transcode(*real_err, *charset, r.charsets.source());
1.109 paf 358: }
359:
1.111 paf 360: VFile& self=GET_SELF(r, VFile);
1.109 paf 361:
1.111 paf 362: const String* body=real_out; // ^file:exec
363: const char* eol_marker=0; size_t eol_marker_size;
364: const String* header=0;
1.41 parser 365: if(cgi) { // ^file:cgi
1.111 paf 366: // construct with 'out' body and header
367: size_t dos_pos=real_out->pos("\r\n\r\n", 4);
368: size_t unix_pos=real_out->pos("\n\n", 2);
369:
370: bool unix_header_break;
371: switch((dos_pos!=STRING_NOT_FOUND?10:00) + (unix_pos!=STRING_NOT_FOUND?01:00)) {
372: case 10: // dos
373: unix_header_break=false;
374: break;
375: case 01: // unix
376: unix_header_break=true;
377: break;
378: case 11: // dos & unix
379: unix_header_break=unix_pos<dos_pos;
380: break;
381: default: // 00
382: unix_header_break=false; // calm down, compiler
1.74 paf 383: throw Exception(0,
1.111 paf 384: 0,
1.90 paf 385: "output does not contain CGI header; "
386: "exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"",
1.111 paf 387: execution.status,
388: (uint)real_out->length(), real_out->cstr(),
389: (uint)real_err->length(), real_err->cstr());
390: break; //never reached
391: }
392:
393: int header_break_pos;
394: if(unix_header_break) {
395: header_break_pos=unix_pos;
396: eol_marker="\n"; eol_marker_size=1;
397: } else {
398: header_break_pos=dos_pos;
399: eol_marker="\r\n"; eol_marker_size=2;
400: }
1.21 paf 401:
1.109 paf 402: header=&real_out->mid(0, header_break_pos);
1.111 paf 403: body=&real_out->mid(header_break_pos+eol_marker_size*2, real_out->length());
1.29 paf 404: }
1.41 parser 405: // body
1.111 paf 406: self.set(false/*not tainted*/, body->cstr(), body->length());
1.94 paf 407:
408: // $fields << header
1.98 paf 409: if(header && eol_marker) {
1.111 paf 410: ArrayString rows;
411: size_t pos_after=0;
412: header->split(rows, pos_after, eol_marker);
1.116 paf 413: Pass_cgi_header_attribute_info info={0, 0, 0};
1.111 paf 414: info.charset=&r.charsets.source();
415: info.fields=&self.fields();
1.94 paf 416: rows.for_each(pass_cgi_header_attribute, &info);
417: if(info.content_type)
1.111 paf 418: self.fields().put(content_type_name, info.content_type);
1.94 paf 419: }
1.21 paf 420:
1.42 parser 421: // $status
1.111 paf 422: self.fields().put(file_status_name, new VInt(execution.status));
1.21 paf 423:
424: // $stderr
1.111 paf 425: if(real_err->length())
1.21 paf 426: self.fields().put(
1.119 paf 427: String::Body("stderr"),
1.111 paf 428: new VString(*real_err));
1.21 paf 429: }
1.111 paf 430: static void _exec(Request& r, MethodParams& params) {
431: _exec_cgi(r, params, false);
1.41 parser 432: }
1.111 paf 433: static void _cgi(Request& r, MethodParams& params) {
434: _exec_cgi(r, params, true);
1.41 parser 435: }
436:
1.111 paf 437: static void _list(Request& r, MethodParams& params) {
438: Value& relative_path=params.as_no_junction(0, "path must not be code");
1.47 parser 439:
1.111 paf 440: const String* regexp;
1.47 parser 441: pcre *regexp_code;
1.81 paf 442: const int ovecsize=(1/*match*/)*3;
443: int ovector[ovecsize];
1.111 paf 444: if(params.count()>1) {
445: regexp=¶ms.as_no_junction(1, "regexp must not be code").as_string();
1.47 parser 446:
1.111 paf 447: const char* pattern=regexp->cstr();
448: const char* errptr;
1.47 parser 449: int erroffset;
450: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
451: &errptr, &erroffset,
1.111 paf 452: r.charsets.source().pcre_tables);
1.47 parser 453:
454: if(!regexp_code)
1.74 paf 455: throw Exception(0,
1.111 paf 456: ®exp->mid(erroffset, regexp->length()),
1.47 parser 457: "regular expression syntax error - %s", errptr);
1.114 paf 458: } else {
459: regexp=0; // not used, just to calm down compiler
1.47 parser 460: regexp_code=0;
1.114 paf 461: }
1.47 parser 462:
463:
1.111 paf 464: const char* absolute_path_cstr=r.absolute(relative_path.as_string()).cstr(String::L_FILE_SPEC);
1.47 parser 465:
1.111 paf 466: Table::columns_type columns(new ArrayString);
467: *columns+=new String("name");
468: Table& table=*new Table(columns);
1.47 parser 469:
470: LOAD_DIR(absolute_path_cstr,
1.111 paf 471: const char* file_name_cstr=ffblk.ff_name;
472: size_t file_name_size=strlen(file_name_cstr);
1.47 parser 473: bool suits=true;
474: if(regexp_code) {
475: int exec_result=pcre_exec(regexp_code, 0,
476: ffblk.ff_name, file_name_size, 0,
477: 0, ovector, ovecsize);
478:
479: if(exec_result==PCRE_ERROR_NOMATCH)
480: suits=false;
481: else if(exec_result<0) {
482: (*pcre_free)(regexp_code);
1.74 paf 483: throw Exception(0,
1.47 parser 484: regexp,
485: "regular expression execute (%d)",
486: exec_result);
487: }
488: }
489:
490: if(suits) {
1.111 paf 491: Table::element_type row(new ArrayString);
492: *row+=new String(pa_strdup(file_name_cstr, file_name_size), file_name_size, true);
493: table+=row;
1.47 parser 494: }
495: );
496:
497: if(regexp_code)
1.111 paf 498: pcre_free(regexp_code);
1.47 parser 499:
1.60 parser 500: // write out result
1.111 paf 501: r.write_no_lang(*new VTable(&table));
1.47 parser 502: }
1.21 paf 503:
1.69 paf 504: #ifndef DOXYGEN
505: struct Lock_execute_body_info {
1.111 paf 506: Request* r;
507: Value* body_code;
1.69 paf 508: };
509: #endif
1.111 paf 510: static void lock_execute_body(int , void *ainfo) {
511: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(ainfo);
1.69 paf 512: // execute body
1.78 paf 513: info.r->write_assign_lang(info.r->process(*info.body_code));
1.69 paf 514: };
1.111 paf 515: static void _lock(Request& r, MethodParams& params) {
516: const String& file_spec=r.absolute(params.as_string(0, "file name must be string"));
1.116 paf 517: Lock_execute_body_info info={
518: &r,
1.117 paf 519: ¶ms.as_junction(1, "body must be code")
1.116 paf 520: };
1.69 paf 521:
1.70 paf 522: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 523: }
524:
1.111 paf 525: static int lastposafter(const String& s, size_t after, const char* substr, size_t substr_size, bool beforelast=false) {
1.114 paf 526: size_t size=0; // just to calm down compiler
1.89 paf 527: if(beforelast)
1.111 paf 528: size=s.length();
1.116 paf 529: size_t at;
1.112 paf 530: while((at=s.pos(String::Body(substr, substr_size), after))!=STRING_NOT_FOUND) {
1.89 paf 531: size_t newafter=at+substr_size/*skip substr*/;
532: if(beforelast && newafter==size)
533: break;
534: after=newafter;
535: }
536:
537: return after;
538: }
539:
1.111 paf 540: static void _find(Request& r, MethodParams& params) {
541: const String& file_name=params.as_no_junction(0, "file name must not be code").as_string();
542: const String* file_spec;
1.90 paf 543: if(file_name.first_char()=='/')
544: file_spec=&file_name;
545: else
1.111 paf 546: file_spec=&r.relative(r.request_info.uri, file_name);
1.90 paf 547:
548: // easy way
549: if(file_readable(r.absolute(*file_spec))) {
1.96 paf 550: r.write_assign_lang(*file_spec);
1.90 paf 551: return;
552: }
553:
554: // monkey way
555: int after_base_slash=lastposafter(*file_spec, 0, "/", 1);
1.111 paf 556: const String* dirname=&file_spec->mid(0, after_base_slash);
557: const String& basename=file_spec->mid(after_base_slash, file_spec->length());
1.90 paf 558:
559: int after_monkey_slash;
560: while((after_monkey_slash=lastposafter(*dirname, 0, "/", 1, true))>0) {
1.111 paf 561: String test_name;
562: test_name<<*(dirname=&dirname->mid(0, after_monkey_slash));
563: test_name<<basename;
564: if(file_readable(r.absolute(test_name))) {
565: r.write_assign_lang(test_name);
1.90 paf 566: return;
567: }
568: }
569:
570: // no way, not found
1.111 paf 571: if(params.count()==2) {
572: Value& not_found_code=params.as_junction(1, "not-found param must be code");
1.90 paf 573: r.write_pass_lang(r.process(not_found_code));
574: }
575: }
576:
1.111 paf 577: static void _dirname(Request& r, MethodParams& params) {
578: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 579: // /a/some.tar.gz > /a
580: // /a/b/ > /a
581: int afterslash=lastposafter(file_spec, 0, "/", 1, true);
582: if(afterslash>0)
583: r.write_assign_lang(file_spec.mid(0, afterslash==1?1:afterslash-1));
584: else
1.111 paf 585: r.write_assign_lang(String(".", 1));
1.89 paf 586: }
587:
1.111 paf 588: static void _basename(Request& r, MethodParams& params) {
589: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 590: // /a/some.tar.gz > some.tar.gz
591: int afterslash=lastposafter(file_spec, 0, "/", 1);
1.111 paf 592: r.write_assign_lang(file_spec.mid(afterslash, file_spec.length()));
1.89 paf 593: }
594:
1.111 paf 595: static void _justname(Request& r, MethodParams& params) {
596: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 597: // /a/some.tar.gz > some.tar
598: int afterslash=lastposafter(file_spec, 0, "/", 1);
599: int afterdot=lastposafter(file_spec, afterslash, ".", 1);
1.111 paf 600: r.write_assign_lang(file_spec.mid(afterslash, afterdot!=afterslash?afterdot-1:file_spec.length()));
1.89 paf 601: }
1.111 paf 602: static void _justext(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 > gz
605: int afterdot=lastposafter(file_spec, 0, ".", 1);
606: if(afterdot>0)
1.111 paf 607: r.write_assign_lang(file_spec.mid(afterdot, file_spec.length()));
1.89 paf 608: }
609:
1.111 paf 610: static void _fullpath(Request& r, MethodParams& params) {
611: const String& file_spec=params.as_string(0, "file name must be string");
612: const String* result;
1.102 paf 613: if(file_spec.first_char()=='/')
614: result=&file_spec;
615: else {
616: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
617: const String& full_disk_path=r.absolute(file_spec);
1.111 paf 618: size_t document_root_length=strlen(r.request_info.document_root);
1.106 paf 619:
620: if(document_root_length>0) {
1.111 paf 621: char last_char=r.request_info.document_root[document_root_length-1];
1.106 paf 622: if(last_char == '/' || last_char == '\\')
623: --document_root_length;
624: }
1.111 paf 625: result=&full_disk_path.mid(document_root_length, full_disk_path.length());
1.102 paf 626: }
627: r.write_assign_lang(*result);
628: }
629:
1.121 paf 630: static void _sql_string(Request& r, MethodParams&) {
631: VFile& self=GET_SELF(r, VFile);
632:
633: const char *quoted=r.connection()->quote(self.value_ptr(), self.value_size());
634: r.write_assign_lang(*new String(quoted));
635: }
1.89 paf 636:
1.122 paf 637: #ifndef DOXYGEN
638: class File_sql_event_handlers: public SQL_Driver_query_event_handlers {
639: const String& statement_string; const char* statement_cstr;
640: int got_columns;
641: int got_cells;
642: public:
643: String::C value;
644: String* user_file_name;
645: String* user_content_type;
646: public:
647: File_sql_event_handlers(
648: const String& astatement_string, const char* astatement_cstr):
649: statement_string(astatement_string), statement_cstr(astatement_cstr),
650: got_columns(0),
651: got_cells(0),
652: user_file_name(0),
653: user_content_type(0) {}
654:
655: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
656: if(got_columns++==3) {
657: error=SQL_Error("parser.runtime", "result must contain not more then 3 columns");
658: return true;
659: }
660: return false;
661: }
662: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
663: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
664: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
665: try {
666: switch(got_cells++) {
667: case 0:
668: value=String::C(str, length);
669: break;
670: case 1:
671: user_file_name=new String(str, length, true);
672: break;
673: case 2:
674: user_content_type=new String(str, length, true);
675: break;
676: default:
677: error=SQL_Error("parser.runtime", "result must not contain more then one row, three rows");
678: return true;
679: }
680: return false;
681: } catch(...) {
682: error=SQL_Error("exception occured in File_sql_event_handlers::add_row_cell");
683: return true;
684: }
685: }
686: };
687: #endif
688: static void _sql(Request& r, MethodParams& params) {
689: const String* user_file_name=0;
690: if(params.get(0)->is_string())
691: user_file_name=¶ms.get(0)->as_string();
692:
693: Value& statement=params.as_junction(params.count()-1, "statement must be code");
694:
695: Temp_lang temp_lang(r, String::L_SQL);
696: const String& statement_string=r.process_to_string(statement);
697: const char* statement_cstr=
698: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
699: File_sql_event_handlers handlers(statement_string, statement_cstr);
700: r.connection()->query(
1.123 paf 701: statement_cstr,
702: 0, 0,
703: 0, 0,
1.122 paf 704: handlers,
705: statement_string);
706:
707: if(!handlers.value)
708: throw Exception("parser.runtime",
709: 0,
710: "produced no result");
711:
712: if(!user_file_name)
713: user_file_name=handlers.user_file_name;
714:
715: const char* user_file_name_cstr=user_file_name? user_file_name->cstr(): 0;
716:
717: VString* vcontent_type=handlers.user_content_type?
718: new VString(*handlers.user_content_type)
719: : user_file_name_cstr?
720: new VString(r.mime_type_of(user_file_name_cstr))
721: : 0;
722: VFile& self=GET_SELF(r, VFile);
723: self.set(true/*tainted*/, handlers.value.str, handlers.value.length, user_file_name_cstr, vcontent_type);
724: }
725:
1.32 paf 726: // constructor
727:
1.111 paf 728: MFile::MFile(): Methoded("file") {
1.48 parser 729: // ^save[mode;file-name]
730: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 731:
732: // ^delete[file-name]
1.32 paf 733: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 734:
735: // ^move[from-file-name;to-file-name]
736: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 737:
1.48 parser 738: // ^load[mode;disk-name]
739: // ^load[mode;disk-name;user-name]
740: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 741:
742: // ^stat[disk-name]
1.32 paf 743: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 744:
1.36 paf 745: // ^cgi[file-name]
746: // ^cgi[file-name;env hash]
747: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 748: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
749:
750: // ^exec[file-name]
751: // ^exec[file-name;env hash]
752: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
753: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 754:
755: // ^file:list[path]
756: // ^file:list[path][regexp]
757: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 758:
759: // ^file:lock[path]{code}
760: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.90 paf 761:
762: // ^find[file-name]
763: // ^find[file-name]{when-not-found}
764: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.47 parser 765:
1.89 paf 766: // ^file:dirname[/a/some.tar.gz]=/a
767: // ^file:dirname[/a/b/]=/a
768: add_native_method("dirname", Method::CT_STATIC, _dirname, 1, 1);
769: // ^file:basename[/a/some.tar.gz]=some.tar.gz
770: add_native_method("basename", Method::CT_STATIC, _basename, 1, 1);
771: // ^file:justname[/a/some.tar.gz]=some.tar
772: add_native_method("justname", Method::CT_STATIC, _justname, 1, 1);
773: // ^file:justext[/a/some.tar.gz]=gz
774: add_native_method("justext", Method::CT_STATIC, _justext, 1, 1);
1.102 paf 775: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
776: add_native_method("fullpath", Method::CT_STATIC, _fullpath, 1, 1);
1.121 paf 777:
778: // ^file.sql-string[]
779: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.122 paf 780:
781: // ^file::sql[[alt_name]]{}
782: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.1 paf 783: }
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