Annotation of parser3/src/classes/file.C, revision 1.124
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:
1.124 ! paf 8: static const char * const IDENT_FILE_C="$Date: 2004/06/18 15:55:46 $";
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"
1.90 paf 32: #define STDIN_EXEC_PARAM_NAME "stdin"
1.109 paf 33: #define CHARSET_EXEC_PARAM_NAME "charset"
1.48 parser 34:
1.111 paf 35: // class
36:
37: class MFile: public Methoded {
38: public: // VStateless_class
39:
1.114 paf 40: Value* create_new_value(Pool&) { return new VFile(); }
1.111 paf 41:
42: public: // Methoded
43: bool used_directly() { return true; }
44:
45: public:
46: MFile();
47:
48: };
49:
50: // global variable
51:
52: DECLARE_CLASS_VAR(file, new MFile, 0);
53:
1.83 paf 54: // consts
55:
56: /// from apache-1.3|src|support|suexec.c
1.111 paf 57: static const char* suexec_safe_env_lst[]={
1.83 paf 58: "AUTH_TYPE",
59: "CONTENT_LENGTH",
60: "CONTENT_TYPE",
61: "DATE_GMT",
62: "DATE_LOCAL",
63: "DOCUMENT_NAME",
64: "DOCUMENT_PATH_INFO",
65: "DOCUMENT_ROOT",
66: "DOCUMENT_URI",
67: "FILEPATH_INFO",
68: "GATEWAY_INTERFACE",
69: "LAST_MODIFIED",
70: "PATH_INFO",
71: "PATH_TRANSLATED",
72: "QUERY_STRING",
73: "QUERY_STRING_UNESCAPED",
74: "REMOTE_ADDR",
75: "REMOTE_HOST",
76: "REMOTE_IDENT",
77: "REMOTE_PORT",
78: "REMOTE_USER",
79: "REDIRECT_QUERY_STRING",
80: "REDIRECT_STATUS",
81: "REDIRECT_URL",
82: "REQUEST_METHOD",
83: "REQUEST_URI",
84: "SCRIPT_FILENAME",
85: "SCRIPT_NAME",
86: "SCRIPT_URI",
87: "SCRIPT_URL",
88: "SERVER_ADMIN",
89: "SERVER_NAME",
90: "SERVER_ADDR",
91: "SERVER_PORT",
92: "SERVER_PROTOCOL",
93: "SERVER_SOFTWARE",
94: "UNIQUE_ID",
95: "USER_NAME",
96: "TZ",
97: NULL
98: };
99:
1.111 paf 100: // statics
1.33 paf 101:
1.112 paf 102: static const String::Body adate_name("adate");
103: static const String::Body mdate_name("mdate");
104: static const String::Body cdate_name("cdate");
1.32 paf 105:
1.1 paf 106: // methods
107:
1.111 paf 108: static void _save(Request& r, MethodParams& params) {
109: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
110: Value& vfile_name=params.as_no_junction(1, "file name must not be code");
1.4 paf 111:
1.7 paf 112: // save
1.111 paf 113: GET_SELF(r, VFile).save(r.absolute(vfile_name.as_string()),
1.48 parser 114: vmode_name.as_string()==TEXT_MODE_NAME);
1.7 paf 115: }
116:
1.111 paf 117: static void _delete(Request& r, MethodParams& params) {
118: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.7 paf 119:
120: // unlink
1.68 paf 121: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 122: }
123:
1.111 paf 124: static void _move(Request& r, MethodParams& params) {
125: Value& vfrom_file_name=params.as_no_junction(0, "from file name must not be code");
126: Value& vto_file_name=params.as_no_junction(1, "to file name must not be code");
1.45 parser 127:
1.51 parser 128: // move
1.68 paf 129: file_move(
1.45 parser 130: r.absolute(vfrom_file_name.as_string()),
131: r.absolute(vto_file_name.as_string()));
132: }
133:
1.111 paf 134: static void _load_pass_param(
135: HashStringValue::key_type key,
136: HashStringValue::value_type value,
137: HashStringValue *dest) {
138: dest->put(key, value);
139: }
140: static void _load(Request& r, MethodParams& params) {
141: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
142: const String& lfile_name=r.absolute(params.as_no_junction(1, "file name must not be code").as_string());
143: Value* third_param=params.count()>2?¶ms.as_no_junction(2, "filename or options must not be code")
144: :0;
145: HashStringValue* third_param_hash=third_param?third_param->get_hash():0;
146: size_t alt_filename_param_index=2;
1.104 paf 147: if(third_param_hash)
148: alt_filename_param_index++;
1.9 paf 149:
1.111 paf 150: File_read_result file=file_read(r.charsets, lfile_name,
1.104 paf 151: vmode_name.as_string()==TEXT_MODE_NAME,
1.111 paf 152: third_param_hash
1.104 paf 153: );
1.9 paf 154:
1.111 paf 155: const char *user_file_name=params.count()>alt_filename_param_index?
156: params.as_string(alt_filename_param_index, "filename must be string").cstr()
157: :lfile_name.cstr(String::L_FILE_SPEC);
158:
159: Value* vcontent_type=0;
160: if(file.headers)
161: vcontent_type=file.headers->get(content_type_name);
1.104 paf 162: if(!vcontent_type)
1.111 paf 163: vcontent_type=new VString(r.mime_type_of(user_file_name));
1.10 paf 164:
1.111 paf 165: VFile& self=GET_SELF(r, VFile);
166: self.set(true/*tainted*/, file.str, file.length, user_file_name, vcontent_type);
167: if(file.headers)
168: file.headers->for_each(_load_pass_param, &self.fields());
1.9 paf 169: }
170:
1.111 paf 171: static void _stat(Request& r, MethodParams& params) {
172: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.25 paf 173:
174: const String& lfile_name=vfile_name.as_string();
175:
1.40 parser 176: size_t size;
177: time_t atime, mtime, ctime;
178: file_stat(r.absolute(lfile_name),
179: size,
180: atime, mtime, ctime);
1.25 paf 181:
1.111 paf 182: VFile& self=GET_SELF(r, VFile);
183: self.set(true/*tainted*/, 0/*no bytes*/, size);
184: HashStringValue& ff=self.fields();
185: ff.put(adate_name, new VDate(atime));
186: ff.put(mdate_name, new VDate(mtime));
187: ff.put(cdate_name, new VDate(ctime));
188: ff.put(content_type_name, new VString(r.mime_type_of(lfile_name.cstr(String::L_FILE_SPEC))));
1.25 paf 189: }
190:
1.111 paf 191: static bool is_safe_env_key(const char* key) {
192: for(const char* validator=key; *validator; validator++) {
193: char c=*validator;
194: if(!(c>='A' && c<='Z' || c>='0' && c<='9' || c=='_' || c=='-'))
195: return false;
196: }
1.88 paf 197: if(strncasecmp(key, "HTTP_", 5)==0)
1.83 paf 198: return true;
1.87 paf 199: if(strncasecmp(key, "CGI_", 4)==0)
1.83 paf 200: return true;
201: for(int i=0; suexec_safe_env_lst[i]; i++) {
1.87 paf 202: if(strcasecmp(key, suexec_safe_env_lst[i])==0)
1.83 paf 203: return true;
204: }
205: return false;
206: }
1.90 paf 207: #ifndef DOXYGEN
208: struct Append_env_pair_info {
1.111 paf 209: HashStringString* env;
1.100 paf 210: Value* vstdin;
1.109 paf 211: Value* vcharset;
1.90 paf 212: };
213: #endif
1.111 paf 214: static void append_env_pair(
215: HashStringValue::key_type akey,
216: HashStringValue::value_type avalue,
217: Append_env_pair_info *info) {
218: if(akey==STDIN_EXEC_PARAM_NAME) {
219: info->vstdin=avalue;
220: } else if(akey==CHARSET_EXEC_PARAM_NAME) {
221: info->vcharset=avalue;
1.90 paf 222: } else {
1.111 paf 223: if(!is_safe_env_key(akey.cstr()))
1.90 paf 224: throw Exception("parser.runtime",
1.111 paf 225: new String(akey, String::L_TAINTED),
1.90 paf 226: "not safe environment variable");
1.124 ! paf 227: info->env->put(akey, avalue->as_string().cstr(String::L_UNSPECIFIED));
1.90 paf 228: }
1.22 paf 229: }
1.94 paf 230: #ifndef DOXYGEN
231: struct Pass_cgi_header_attribute_info {
1.111 paf 232: Charset* charset;
233: HashStringValue* fields;
234: Value* content_type;
1.94 paf 235: };
236: #endif
1.111 paf 237: static void pass_cgi_header_attribute(
238: ArrayString::element_type astring,
239: Pass_cgi_header_attribute_info* info) {
240: size_t colon_pos=astring->pos(':');
241: if(colon_pos==STRING_NOT_FOUND) {
242: const String& key=astring->mid(0, colon_pos).change_case(
243: *info->charset, String::CC_UPPER);
244: Value* value=new VString(astring->mid(colon_pos+1, astring->length()));
245: info->fields->put(key, value);
1.94 paf 246: if(key=="CONTENT-TYPE")
1.111 paf 247: info->content_type=value;
1.94 paf 248: }
1.29 paf 249: }
1.90 paf 250: /// @todo fix `` in perl - they produced flipping consoles and no output to perl
1.111 paf 251: static void _exec_cgi(Request& r, MethodParams& params,
1.41 parser 252: bool cgi) {
1.21 paf 253:
1.111 paf 254: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.21 paf 255:
1.23 paf 256: const String& script_name=r.absolute(vfile_name.as_string());
257:
1.111 paf 258: HashStringString env;
1.62 paf 259: #define ECSTR(name, value_cstr) \
1.111 paf 260: if(value_cstr) \
261: env.put( \
1.112 paf 262: String::Body(#name), \
263: String::Body(value_cstr, 0)); \
1.82 paf 264: // passing SAPI::environment
1.111 paf 265: if(const char *const *pairs=SAPI::environment(r.sapi_info)) {
266: while(const char* pair=*pairs++)
267: if(const char* eq_at=strchr(pair, '='))
268: if(eq_at[1]) // has value
269: env.put(
270: pa_strdup(pair, eq_at-pair),
271: pa_strdup(eq_at+1, 0));
1.82 paf 272: }
273:
1.23 paf 274: // const
1.63 paf 275: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 276: // from Request.info
1.111 paf 277: ECSTR(DOCUMENT_ROOT, r.request_info.document_root);
278: ECSTR(PATH_TRANSLATED, r.request_info.path_translated);
279: ECSTR(REQUEST_METHOD, r.request_info.method);
280: ECSTR(QUERY_STRING, r.request_info.query_string);
281: ECSTR(REQUEST_URI, r.request_info.uri);
282: ECSTR(CONTENT_TYPE, r.request_info.content_type);
1.23 paf 283: char content_length_cstr[MAX_NUMBER];
1.111 paf 284: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.request_info.content_length);
285: //String content_length(content_length_cstr);
1.62 paf 286: ECSTR(CONTENT_LENGTH, content_length_cstr);
1.82 paf 287: // SCRIPT_*
1.119 paf 288: env.put(String::Body("SCRIPT_NAME"), script_name);
289: //env.put(String::Body("SCRIPT_FILENAME"), ??&script_name);
1.23 paf 290:
1.111 paf 291: bool stdin_specified=false;
1.90 paf 292: // environment & stdin from param
1.111 paf 293: String *in=new String();
1.109 paf 294: Charset *charset=0; // default script works raw_in 'source' charset = no transcoding needed
1.111 paf 295: if(params.count()>1) {
296: Value& venv=params.as_no_junction(1, "env must not be code");
297: if(HashStringValue* user_env=venv.get_hash()) {
1.116 paf 298: Append_env_pair_info info={&env, 0, 0};
1.90 paf 299: user_env->for_each(append_env_pair, &info);
1.109 paf 300: // $.stdin
1.103 paf 301: if(info.vstdin) {
1.111 paf 302: stdin_specified=true;
303: if(const String* sstdin=info.vstdin->get_string()) {
304: in->append(*sstdin, String::L_CLEAN, true);
1.103 paf 305: } else
1.111 paf 306: if(VFile* vfile=static_cast<VFile *>(info.vstdin->as("file", false)))
307: in->append_know_length((const char* )vfile->value_ptr(), vfile->value_size(), String::L_TAINTED);
1.100 paf 308: else
309: throw Exception("parser.runtime",
1.111 paf 310: 0,
1.100 paf 311: STDIN_EXEC_PARAM_NAME " parameter must be string or file");
1.103 paf 312: }
1.109 paf 313: // $.charset
314: if(info.vcharset)
1.111 paf 315: charset=&charsets.get(info.vcharset->as_string()
316: .change_case(r.charsets.source(), String::CC_UPPER));
1.90 paf 317: }
1.21 paf 318: }
319:
1.90 paf 320: // argv from params
1.111 paf 321: ArrayString argv;
322: if(params.count()>2) {
323: for(size_t i=2; i<params.count(); i++)
324: argv+=¶ms.as_string(i, "parameter must be string");
1.21 paf 325: }
1.90 paf 326:
1.109 paf 327: // transcode if necessary
328: if(charset) {
1.111 paf 329: Charset::transcode(env, r.charsets.source(), *charset);
330: Charset::transcode(argv, r.charsets.source(), *charset);
331: in=&Charset::transcode(*in, r.charsets.source(), *charset);
332: }
333: // @todo
334: // ifdef WIN32 do OEM->ANSI transcode on some(.cmd?) programs to
335: // match silent conversion in OS
336:
337: // exec!
338: PA_exec_result execution=
339: pa_exec(false/*forced_allow*/, script_name, &env, argv, *in);
340:
341: String *real_out=&execution.out;
342: String *real_err=&execution.err;
343: // transcode if necessary
344: if(charset) {
345: real_out=&Charset::transcode(*real_out, *charset, r.charsets.source());
346: real_err=&Charset::transcode(*real_err, *charset, r.charsets.source());
1.109 paf 347: }
348:
1.111 paf 349: VFile& self=GET_SELF(r, VFile);
1.109 paf 350:
1.111 paf 351: const String* body=real_out; // ^file:exec
352: const char* eol_marker=0; size_t eol_marker_size;
353: const String* header=0;
1.41 parser 354: if(cgi) { // ^file:cgi
1.111 paf 355: // construct with 'out' body and header
356: size_t dos_pos=real_out->pos("\r\n\r\n", 4);
357: size_t unix_pos=real_out->pos("\n\n", 2);
358:
359: bool unix_header_break;
360: switch((dos_pos!=STRING_NOT_FOUND?10:00) + (unix_pos!=STRING_NOT_FOUND?01:00)) {
361: case 10: // dos
362: unix_header_break=false;
363: break;
364: case 01: // unix
365: unix_header_break=true;
366: break;
367: case 11: // dos & unix
368: unix_header_break=unix_pos<dos_pos;
369: break;
370: default: // 00
371: unix_header_break=false; // calm down, compiler
1.74 paf 372: throw Exception(0,
1.111 paf 373: 0,
1.90 paf 374: "output does not contain CGI header; "
375: "exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"",
1.111 paf 376: execution.status,
377: (uint)real_out->length(), real_out->cstr(),
378: (uint)real_err->length(), real_err->cstr());
379: break; //never reached
380: }
381:
382: int header_break_pos;
383: if(unix_header_break) {
384: header_break_pos=unix_pos;
385: eol_marker="\n"; eol_marker_size=1;
386: } else {
387: header_break_pos=dos_pos;
388: eol_marker="\r\n"; eol_marker_size=2;
389: }
1.21 paf 390:
1.109 paf 391: header=&real_out->mid(0, header_break_pos);
1.111 paf 392: body=&real_out->mid(header_break_pos+eol_marker_size*2, real_out->length());
1.29 paf 393: }
1.41 parser 394: // body
1.111 paf 395: self.set(false/*not tainted*/, body->cstr(), body->length());
1.94 paf 396:
397: // $fields << header
1.98 paf 398: if(header && eol_marker) {
1.111 paf 399: ArrayString rows;
400: size_t pos_after=0;
401: header->split(rows, pos_after, eol_marker);
1.116 paf 402: Pass_cgi_header_attribute_info info={0, 0, 0};
1.111 paf 403: info.charset=&r.charsets.source();
404: info.fields=&self.fields();
1.94 paf 405: rows.for_each(pass_cgi_header_attribute, &info);
406: if(info.content_type)
1.111 paf 407: self.fields().put(content_type_name, info.content_type);
1.94 paf 408: }
1.21 paf 409:
1.42 parser 410: // $status
1.111 paf 411: self.fields().put(file_status_name, new VInt(execution.status));
1.21 paf 412:
413: // $stderr
1.111 paf 414: if(real_err->length())
1.21 paf 415: self.fields().put(
1.119 paf 416: String::Body("stderr"),
1.111 paf 417: new VString(*real_err));
1.21 paf 418: }
1.111 paf 419: static void _exec(Request& r, MethodParams& params) {
420: _exec_cgi(r, params, false);
1.41 parser 421: }
1.111 paf 422: static void _cgi(Request& r, MethodParams& params) {
423: _exec_cgi(r, params, true);
1.41 parser 424: }
425:
1.111 paf 426: static void _list(Request& r, MethodParams& params) {
427: Value& relative_path=params.as_no_junction(0, "path must not be code");
1.47 parser 428:
1.111 paf 429: const String* regexp;
1.47 parser 430: pcre *regexp_code;
1.81 paf 431: const int ovecsize=(1/*match*/)*3;
432: int ovector[ovecsize];
1.111 paf 433: if(params.count()>1) {
434: regexp=¶ms.as_no_junction(1, "regexp must not be code").as_string();
1.47 parser 435:
1.111 paf 436: const char* pattern=regexp->cstr();
437: const char* errptr;
1.47 parser 438: int erroffset;
439: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
440: &errptr, &erroffset,
1.111 paf 441: r.charsets.source().pcre_tables);
1.47 parser 442:
443: if(!regexp_code)
1.74 paf 444: throw Exception(0,
1.111 paf 445: ®exp->mid(erroffset, regexp->length()),
1.47 parser 446: "regular expression syntax error - %s", errptr);
1.114 paf 447: } else {
448: regexp=0; // not used, just to calm down compiler
1.47 parser 449: regexp_code=0;
1.114 paf 450: }
1.47 parser 451:
452:
1.111 paf 453: const char* absolute_path_cstr=r.absolute(relative_path.as_string()).cstr(String::L_FILE_SPEC);
1.47 parser 454:
1.111 paf 455: Table::columns_type columns(new ArrayString);
456: *columns+=new String("name");
457: Table& table=*new Table(columns);
1.47 parser 458:
459: LOAD_DIR(absolute_path_cstr,
1.111 paf 460: const char* file_name_cstr=ffblk.ff_name;
461: size_t file_name_size=strlen(file_name_cstr);
1.47 parser 462: bool suits=true;
463: if(regexp_code) {
464: int exec_result=pcre_exec(regexp_code, 0,
465: ffblk.ff_name, file_name_size, 0,
466: 0, ovector, ovecsize);
467:
468: if(exec_result==PCRE_ERROR_NOMATCH)
469: suits=false;
470: else if(exec_result<0) {
471: (*pcre_free)(regexp_code);
1.74 paf 472: throw Exception(0,
1.47 parser 473: regexp,
474: "regular expression execute (%d)",
475: exec_result);
476: }
477: }
478:
479: if(suits) {
1.111 paf 480: Table::element_type row(new ArrayString);
481: *row+=new String(pa_strdup(file_name_cstr, file_name_size), file_name_size, true);
482: table+=row;
1.47 parser 483: }
484: );
485:
486: if(regexp_code)
1.111 paf 487: pcre_free(regexp_code);
1.47 parser 488:
1.60 parser 489: // write out result
1.111 paf 490: r.write_no_lang(*new VTable(&table));
1.47 parser 491: }
1.21 paf 492:
1.69 paf 493: #ifndef DOXYGEN
494: struct Lock_execute_body_info {
1.111 paf 495: Request* r;
496: Value* body_code;
1.69 paf 497: };
498: #endif
1.111 paf 499: static void lock_execute_body(int , void *ainfo) {
500: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(ainfo);
1.69 paf 501: // execute body
1.78 paf 502: info.r->write_assign_lang(info.r->process(*info.body_code));
1.69 paf 503: };
1.111 paf 504: static void _lock(Request& r, MethodParams& params) {
505: const String& file_spec=r.absolute(params.as_string(0, "file name must be string"));
1.116 paf 506: Lock_execute_body_info info={
507: &r,
1.117 paf 508: ¶ms.as_junction(1, "body must be code")
1.116 paf 509: };
1.69 paf 510:
1.70 paf 511: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 512: }
513:
1.111 paf 514: static int lastposafter(const String& s, size_t after, const char* substr, size_t substr_size, bool beforelast=false) {
1.114 paf 515: size_t size=0; // just to calm down compiler
1.89 paf 516: if(beforelast)
1.111 paf 517: size=s.length();
1.116 paf 518: size_t at;
1.112 paf 519: while((at=s.pos(String::Body(substr, substr_size), after))!=STRING_NOT_FOUND) {
1.89 paf 520: size_t newafter=at+substr_size/*skip substr*/;
521: if(beforelast && newafter==size)
522: break;
523: after=newafter;
524: }
525:
526: return after;
527: }
528:
1.111 paf 529: static void _find(Request& r, MethodParams& params) {
530: const String& file_name=params.as_no_junction(0, "file name must not be code").as_string();
531: const String* file_spec;
1.90 paf 532: if(file_name.first_char()=='/')
533: file_spec=&file_name;
534: else
1.111 paf 535: file_spec=&r.relative(r.request_info.uri, file_name);
1.90 paf 536:
537: // easy way
538: if(file_readable(r.absolute(*file_spec))) {
1.96 paf 539: r.write_assign_lang(*file_spec);
1.90 paf 540: return;
541: }
542:
543: // monkey way
544: int after_base_slash=lastposafter(*file_spec, 0, "/", 1);
1.111 paf 545: const String* dirname=&file_spec->mid(0, after_base_slash);
546: const String& basename=file_spec->mid(after_base_slash, file_spec->length());
1.90 paf 547:
548: int after_monkey_slash;
549: while((after_monkey_slash=lastposafter(*dirname, 0, "/", 1, true))>0) {
1.111 paf 550: String test_name;
551: test_name<<*(dirname=&dirname->mid(0, after_monkey_slash));
552: test_name<<basename;
553: if(file_readable(r.absolute(test_name))) {
554: r.write_assign_lang(test_name);
1.90 paf 555: return;
556: }
557: }
558:
559: // no way, not found
1.111 paf 560: if(params.count()==2) {
561: Value& not_found_code=params.as_junction(1, "not-found param must be code");
1.90 paf 562: r.write_pass_lang(r.process(not_found_code));
563: }
564: }
565:
1.111 paf 566: static void _dirname(Request& r, MethodParams& params) {
567: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 568: // /a/some.tar.gz > /a
569: // /a/b/ > /a
570: int afterslash=lastposafter(file_spec, 0, "/", 1, true);
571: if(afterslash>0)
572: r.write_assign_lang(file_spec.mid(0, afterslash==1?1:afterslash-1));
573: else
1.111 paf 574: r.write_assign_lang(String(".", 1));
1.89 paf 575: }
576:
1.111 paf 577: static void _basename(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 > some.tar.gz
580: int afterslash=lastposafter(file_spec, 0, "/", 1);
1.111 paf 581: r.write_assign_lang(file_spec.mid(afterslash, file_spec.length()));
1.89 paf 582: }
583:
1.111 paf 584: static void _justname(Request& r, MethodParams& params) {
585: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 586: // /a/some.tar.gz > some.tar
587: int afterslash=lastposafter(file_spec, 0, "/", 1);
588: int afterdot=lastposafter(file_spec, afterslash, ".", 1);
1.111 paf 589: r.write_assign_lang(file_spec.mid(afterslash, afterdot!=afterslash?afterdot-1:file_spec.length()));
1.89 paf 590: }
1.111 paf 591: static void _justext(Request& r, MethodParams& params) {
592: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 593: // /a/some.tar.gz > gz
594: int afterdot=lastposafter(file_spec, 0, ".", 1);
595: if(afterdot>0)
1.111 paf 596: r.write_assign_lang(file_spec.mid(afterdot, file_spec.length()));
1.89 paf 597: }
598:
1.111 paf 599: static void _fullpath(Request& r, MethodParams& params) {
600: const String& file_spec=params.as_string(0, "file name must be string");
601: const String* result;
1.102 paf 602: if(file_spec.first_char()=='/')
603: result=&file_spec;
604: else {
605: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
606: const String& full_disk_path=r.absolute(file_spec);
1.111 paf 607: size_t document_root_length=strlen(r.request_info.document_root);
1.106 paf 608:
609: if(document_root_length>0) {
1.111 paf 610: char last_char=r.request_info.document_root[document_root_length-1];
1.106 paf 611: if(last_char == '/' || last_char == '\\')
612: --document_root_length;
613: }
1.111 paf 614: result=&full_disk_path.mid(document_root_length, full_disk_path.length());
1.102 paf 615: }
616: r.write_assign_lang(*result);
617: }
618:
1.121 paf 619: static void _sql_string(Request& r, MethodParams&) {
620: VFile& self=GET_SELF(r, VFile);
621:
622: const char *quoted=r.connection()->quote(self.value_ptr(), self.value_size());
623: r.write_assign_lang(*new String(quoted));
624: }
1.89 paf 625:
1.122 paf 626: #ifndef DOXYGEN
627: class File_sql_event_handlers: public SQL_Driver_query_event_handlers {
628: const String& statement_string; const char* statement_cstr;
629: int got_columns;
630: int got_cells;
631: public:
632: String::C value;
633: String* user_file_name;
634: String* user_content_type;
635: public:
636: File_sql_event_handlers(
637: const String& astatement_string, const char* astatement_cstr):
638: statement_string(astatement_string), statement_cstr(astatement_cstr),
639: got_columns(0),
640: got_cells(0),
641: user_file_name(0),
642: user_content_type(0) {}
643:
644: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
645: if(got_columns++==3) {
646: error=SQL_Error("parser.runtime", "result must contain not more then 3 columns");
647: return true;
648: }
649: return false;
650: }
651: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
652: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
653: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
654: try {
655: switch(got_cells++) {
656: case 0:
657: value=String::C(str, length);
658: break;
659: case 1:
660: user_file_name=new String(str, length, true);
661: break;
662: case 2:
663: user_content_type=new String(str, length, true);
664: break;
665: default:
666: error=SQL_Error("parser.runtime", "result must not contain more then one row, three rows");
667: return true;
668: }
669: return false;
670: } catch(...) {
671: error=SQL_Error("exception occured in File_sql_event_handlers::add_row_cell");
672: return true;
673: }
674: }
675: };
676: #endif
677: static void _sql(Request& r, MethodParams& params) {
678: const String* user_file_name=0;
679: if(params.get(0)->is_string())
680: user_file_name=¶ms.get(0)->as_string();
681:
682: Value& statement=params.as_junction(params.count()-1, "statement must be code");
683:
684: Temp_lang temp_lang(r, String::L_SQL);
685: const String& statement_string=r.process_to_string(statement);
686: const char* statement_cstr=
687: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
688: File_sql_event_handlers handlers(statement_string, statement_cstr);
689: r.connection()->query(
1.123 paf 690: statement_cstr,
691: 0, 0,
692: 0, 0,
1.122 paf 693: handlers,
694: statement_string);
695:
696: if(!handlers.value)
697: throw Exception("parser.runtime",
698: 0,
699: "produced no result");
700:
701: if(!user_file_name)
702: user_file_name=handlers.user_file_name;
703:
704: const char* user_file_name_cstr=user_file_name? user_file_name->cstr(): 0;
705:
706: VString* vcontent_type=handlers.user_content_type?
707: new VString(*handlers.user_content_type)
708: : user_file_name_cstr?
709: new VString(r.mime_type_of(user_file_name_cstr))
710: : 0;
711: VFile& self=GET_SELF(r, VFile);
712: self.set(true/*tainted*/, handlers.value.str, handlers.value.length, user_file_name_cstr, vcontent_type);
713: }
714:
1.32 paf 715: // constructor
716:
1.111 paf 717: MFile::MFile(): Methoded("file") {
1.48 parser 718: // ^save[mode;file-name]
719: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 720:
721: // ^delete[file-name]
1.32 paf 722: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 723:
724: // ^move[from-file-name;to-file-name]
725: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 726:
1.48 parser 727: // ^load[mode;disk-name]
728: // ^load[mode;disk-name;user-name]
729: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 730:
731: // ^stat[disk-name]
1.32 paf 732: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 733:
1.36 paf 734: // ^cgi[file-name]
735: // ^cgi[file-name;env hash]
736: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 737: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
738:
739: // ^exec[file-name]
740: // ^exec[file-name;env hash]
741: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
742: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 743:
744: // ^file:list[path]
745: // ^file:list[path][regexp]
746: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 747:
748: // ^file:lock[path]{code}
749: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.90 paf 750:
751: // ^find[file-name]
752: // ^find[file-name]{when-not-found}
753: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.47 parser 754:
1.89 paf 755: // ^file:dirname[/a/some.tar.gz]=/a
756: // ^file:dirname[/a/b/]=/a
757: add_native_method("dirname", Method::CT_STATIC, _dirname, 1, 1);
758: // ^file:basename[/a/some.tar.gz]=some.tar.gz
759: add_native_method("basename", Method::CT_STATIC, _basename, 1, 1);
760: // ^file:justname[/a/some.tar.gz]=some.tar
761: add_native_method("justname", Method::CT_STATIC, _justname, 1, 1);
762: // ^file:justext[/a/some.tar.gz]=gz
763: add_native_method("justext", Method::CT_STATIC, _justext, 1, 1);
1.102 paf 764: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
765: add_native_method("fullpath", Method::CT_STATIC, _fullpath, 1, 1);
1.121 paf 766:
767: // ^file.sql-string[]
768: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.122 paf 769:
770: // ^file::sql[[alt_name]]{}
771: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.1 paf 772: }
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