Annotation of parser3/src/classes/file.C, revision 1.131
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:
1.131 ! paf 8: static const char * const IDENT_FILE_C="$Date: 2004/09/17 11:56:51 $";
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:
1.111 paf 38: // class
39:
40: class MFile: public Methoded {
41: public: // VStateless_class
42:
1.114 paf 43: Value* create_new_value(Pool&) { return new VFile(); }
1.111 paf 44:
45: public: // Methoded
46: bool used_directly() { return true; }
47:
48: public:
49: MFile();
50:
51: };
52:
53: // global variable
54:
55: DECLARE_CLASS_VAR(file, new MFile, 0);
56:
1.83 paf 57: // consts
58:
59: /// from apache-1.3|src|support|suexec.c
1.111 paf 60: static const char* suexec_safe_env_lst[]={
1.83 paf 61: "AUTH_TYPE",
62: "CONTENT_LENGTH",
63: "CONTENT_TYPE",
64: "DATE_GMT",
65: "DATE_LOCAL",
66: "DOCUMENT_NAME",
67: "DOCUMENT_PATH_INFO",
68: "DOCUMENT_ROOT",
69: "DOCUMENT_URI",
70: "FILEPATH_INFO",
71: "GATEWAY_INTERFACE",
72: "LAST_MODIFIED",
73: "PATH_INFO",
74: "PATH_TRANSLATED",
75: "QUERY_STRING",
76: "QUERY_STRING_UNESCAPED",
77: "REMOTE_ADDR",
78: "REMOTE_HOST",
79: "REMOTE_IDENT",
80: "REMOTE_PORT",
81: "REMOTE_USER",
82: "REDIRECT_QUERY_STRING",
83: "REDIRECT_STATUS",
84: "REDIRECT_URL",
85: "REQUEST_METHOD",
86: "REQUEST_URI",
87: "SCRIPT_FILENAME",
88: "SCRIPT_NAME",
89: "SCRIPT_URI",
90: "SCRIPT_URL",
91: "SERVER_ADMIN",
92: "SERVER_NAME",
93: "SERVER_ADDR",
94: "SERVER_PORT",
95: "SERVER_PROTOCOL",
96: "SERVER_SOFTWARE",
97: "UNIQUE_ID",
98: "USER_NAME",
99: "TZ",
100: NULL
101: };
102:
1.111 paf 103: // statics
1.33 paf 104:
1.112 paf 105: static const String::Body adate_name("adate");
106: static const String::Body mdate_name("mdate");
107: static const String::Body cdate_name("cdate");
1.32 paf 108:
1.1 paf 109: // methods
110:
1.125 paf 111: static bool is_text_mode(const String& mode) {
112: if(mode==TEXT_MODE_NAME)
113: return true;
114: if(mode==BINARY_MODE_NAME)
115: return false;
116: throw Exception("parser.runtime",
117: &mode,
118: "is invalid mode, must be either '"TEXT_MODE_NAME"' or '"BINARY_MODE_NAME"'");
119: }
120:
1.111 paf 121: static void _save(Request& r, MethodParams& params) {
122: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
123: Value& vfile_name=params.as_no_junction(1, "file name must not be code");
1.4 paf 124:
1.7 paf 125: // save
1.111 paf 126: GET_SELF(r, VFile).save(r.absolute(vfile_name.as_string()),
1.125 paf 127: is_text_mode(vmode_name.as_string()));
1.7 paf 128: }
129:
1.111 paf 130: static void _delete(Request& r, MethodParams& params) {
131: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.7 paf 132:
133: // unlink
1.68 paf 134: file_delete(r.absolute(vfile_name.as_string()));
1.1 paf 135: }
136:
1.111 paf 137: static void _move(Request& r, MethodParams& params) {
138: Value& vfrom_file_name=params.as_no_junction(0, "from file name must not be code");
139: Value& vto_file_name=params.as_no_junction(1, "to file name must not be code");
1.45 parser 140:
1.51 parser 141: // move
1.68 paf 142: file_move(
1.45 parser 143: r.absolute(vfrom_file_name.as_string()),
144: r.absolute(vto_file_name.as_string()));
145: }
146:
1.111 paf 147: static void _load_pass_param(
148: HashStringValue::key_type key,
149: HashStringValue::value_type value,
150: HashStringValue *dest) {
151: dest->put(key, value);
152: }
153: static void _load(Request& r, MethodParams& params) {
154: Value& vmode_name=params. as_no_junction(0, "mode must not be code");
155: const String& lfile_name=r.absolute(params.as_no_junction(1, "file name must not be code").as_string());
156: Value* third_param=params.count()>2?¶ms.as_no_junction(2, "filename or options must not be code")
157: :0;
158: HashStringValue* third_param_hash=third_param?third_param->get_hash():0;
159: size_t alt_filename_param_index=2;
1.104 paf 160: if(third_param_hash)
161: alt_filename_param_index++;
1.9 paf 162:
1.111 paf 163: File_read_result file=file_read(r.charsets, lfile_name,
1.125 paf 164: is_text_mode(vmode_name.as_string()),
1.111 paf 165: third_param_hash
1.104 paf 166: );
1.9 paf 167:
1.111 paf 168: const char *user_file_name=params.count()>alt_filename_param_index?
169: params.as_string(alt_filename_param_index, "filename must be string").cstr()
170: :lfile_name.cstr(String::L_FILE_SPEC);
171:
172: Value* vcontent_type=0;
173: if(file.headers)
1.129 paf 174: {
175: if(Value* remote_content_type=file.headers->get("CONTENT-TYPE"))
176: vcontent_type=new VString(*new String(remote_content_type->as_string().cstr()));
177: }
1.104 paf 178: if(!vcontent_type)
1.111 paf 179: vcontent_type=new VString(r.mime_type_of(user_file_name));
1.10 paf 180:
1.111 paf 181: VFile& self=GET_SELF(r, VFile);
182: self.set(true/*tainted*/, file.str, file.length, user_file_name, vcontent_type);
183: if(file.headers)
184: file.headers->for_each(_load_pass_param, &self.fields());
1.9 paf 185: }
186:
1.111 paf 187: static void _stat(Request& r, MethodParams& params) {
188: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.25 paf 189:
190: const String& lfile_name=vfile_name.as_string();
191:
1.40 parser 192: size_t size;
193: time_t atime, mtime, ctime;
194: file_stat(r.absolute(lfile_name),
195: size,
196: atime, mtime, ctime);
1.25 paf 197:
1.111 paf 198: VFile& self=GET_SELF(r, VFile);
199: self.set(true/*tainted*/, 0/*no bytes*/, size);
200: HashStringValue& ff=self.fields();
201: ff.put(adate_name, new VDate(atime));
202: ff.put(mdate_name, new VDate(mtime));
203: ff.put(cdate_name, new VDate(ctime));
204: ff.put(content_type_name, new VString(r.mime_type_of(lfile_name.cstr(String::L_FILE_SPEC))));
1.25 paf 205: }
206:
1.111 paf 207: static bool is_safe_env_key(const char* key) {
208: for(const char* validator=key; *validator; validator++) {
209: char c=*validator;
210: if(!(c>='A' && c<='Z' || c>='0' && c<='9' || c=='_' || c=='-'))
211: return false;
212: }
1.88 paf 213: if(strncasecmp(key, "HTTP_", 5)==0)
1.83 paf 214: return true;
1.87 paf 215: if(strncasecmp(key, "CGI_", 4)==0)
1.83 paf 216: return true;
217: for(int i=0; suexec_safe_env_lst[i]; i++) {
1.87 paf 218: if(strcasecmp(key, suexec_safe_env_lst[i])==0)
1.83 paf 219: return true;
220: }
221: return false;
222: }
1.90 paf 223: #ifndef DOXYGEN
224: struct Append_env_pair_info {
1.111 paf 225: HashStringString* env;
1.100 paf 226: Value* vstdin;
1.109 paf 227: Value* vcharset;
1.90 paf 228: };
229: #endif
1.111 paf 230: static void append_env_pair(
231: HashStringValue::key_type akey,
232: HashStringValue::value_type avalue,
233: Append_env_pair_info *info) {
234: if(akey==STDIN_EXEC_PARAM_NAME) {
235: info->vstdin=avalue;
236: } else if(akey==CHARSET_EXEC_PARAM_NAME) {
237: info->vcharset=avalue;
1.90 paf 238: } else {
1.111 paf 239: if(!is_safe_env_key(akey.cstr()))
1.90 paf 240: throw Exception("parser.runtime",
1.111 paf 241: new String(akey, String::L_TAINTED),
1.90 paf 242: "not safe environment variable");
1.124 paf 243: info->env->put(akey, avalue->as_string().cstr(String::L_UNSPECIFIED));
1.90 paf 244: }
1.22 paf 245: }
1.94 paf 246: #ifndef DOXYGEN
247: struct Pass_cgi_header_attribute_info {
1.111 paf 248: Charset* charset;
249: HashStringValue* fields;
250: Value* content_type;
1.94 paf 251: };
252: #endif
1.111 paf 253: static void pass_cgi_header_attribute(
254: ArrayString::element_type astring,
255: Pass_cgi_header_attribute_info* info) {
256: size_t colon_pos=astring->pos(':');
1.130 paf 257: if(colon_pos!=STRING_NOT_FOUND) {
1.111 paf 258: const String& key=astring->mid(0, colon_pos).change_case(
259: *info->charset, String::CC_UPPER);
1.130 paf 260: Value* value=new VString(astring->mid(colon_pos+1, astring->length()).trim());
1.111 paf 261: info->fields->put(key, value);
1.94 paf 262: if(key=="CONTENT-TYPE")
1.111 paf 263: info->content_type=value;
1.94 paf 264: }
1.29 paf 265: }
1.90 paf 266: /// @todo fix `` in perl - they produced flipping consoles and no output to perl
1.111 paf 267: static void _exec_cgi(Request& r, MethodParams& params,
1.41 parser 268: bool cgi) {
1.21 paf 269:
1.111 paf 270: Value& vfile_name=params.as_no_junction(0, "file name must not be code");
1.21 paf 271:
1.23 paf 272: const String& script_name=r.absolute(vfile_name.as_string());
273:
1.111 paf 274: HashStringString env;
1.62 paf 275: #define ECSTR(name, value_cstr) \
1.111 paf 276: if(value_cstr) \
277: env.put( \
1.112 paf 278: String::Body(#name), \
279: String::Body(value_cstr, 0)); \
1.82 paf 280: // passing SAPI::environment
1.111 paf 281: if(const char *const *pairs=SAPI::environment(r.sapi_info)) {
282: while(const char* pair=*pairs++)
283: if(const char* eq_at=strchr(pair, '='))
284: if(eq_at[1]) // has value
285: env.put(
286: pa_strdup(pair, eq_at-pair),
287: pa_strdup(eq_at+1, 0));
1.82 paf 288: }
289:
1.23 paf 290: // const
1.63 paf 291: ECSTR(GATEWAY_INTERFACE, "CGI/1.1");
1.23 paf 292: // from Request.info
1.111 paf 293: ECSTR(DOCUMENT_ROOT, r.request_info.document_root);
294: ECSTR(PATH_TRANSLATED, r.request_info.path_translated);
295: ECSTR(REQUEST_METHOD, r.request_info.method);
296: ECSTR(QUERY_STRING, r.request_info.query_string);
297: ECSTR(REQUEST_URI, r.request_info.uri);
298: ECSTR(CONTENT_TYPE, r.request_info.content_type);
1.23 paf 299: char content_length_cstr[MAX_NUMBER];
1.111 paf 300: snprintf(content_length_cstr, MAX_NUMBER, "%u", r.request_info.content_length);
301: //String content_length(content_length_cstr);
1.62 paf 302: ECSTR(CONTENT_LENGTH, content_length_cstr);
1.82 paf 303: // SCRIPT_*
1.119 paf 304: env.put(String::Body("SCRIPT_NAME"), script_name);
305: //env.put(String::Body("SCRIPT_FILENAME"), ??&script_name);
1.23 paf 306:
1.111 paf 307: bool stdin_specified=false;
1.90 paf 308: // environment & stdin from param
1.111 paf 309: String *in=new String();
1.109 paf 310: Charset *charset=0; // default script works raw_in 'source' charset = no transcoding needed
1.111 paf 311: if(params.count()>1) {
312: Value& venv=params.as_no_junction(1, "env must not be code");
313: if(HashStringValue* user_env=venv.get_hash()) {
1.116 paf 314: Append_env_pair_info info={&env, 0, 0};
1.90 paf 315: user_env->for_each(append_env_pair, &info);
1.109 paf 316: // $.stdin
1.103 paf 317: if(info.vstdin) {
1.111 paf 318: stdin_specified=true;
319: if(const String* sstdin=info.vstdin->get_string()) {
320: in->append(*sstdin, String::L_CLEAN, true);
1.103 paf 321: } else
1.111 paf 322: if(VFile* vfile=static_cast<VFile *>(info.vstdin->as("file", false)))
323: in->append_know_length((const char* )vfile->value_ptr(), vfile->value_size(), String::L_TAINTED);
1.100 paf 324: else
325: throw Exception("parser.runtime",
1.111 paf 326: 0,
1.100 paf 327: STDIN_EXEC_PARAM_NAME " parameter must be string or file");
1.103 paf 328: }
1.109 paf 329: // $.charset
330: if(info.vcharset)
1.111 paf 331: charset=&charsets.get(info.vcharset->as_string()
332: .change_case(r.charsets.source(), String::CC_UPPER));
1.90 paf 333: }
1.21 paf 334: }
335:
1.90 paf 336: // argv from params
1.111 paf 337: ArrayString argv;
338: if(params.count()>2) {
339: for(size_t i=2; i<params.count(); i++)
340: argv+=¶ms.as_string(i, "parameter must be string");
1.21 paf 341: }
1.90 paf 342:
1.109 paf 343: // transcode if necessary
344: if(charset) {
1.111 paf 345: Charset::transcode(env, r.charsets.source(), *charset);
346: Charset::transcode(argv, r.charsets.source(), *charset);
347: in=&Charset::transcode(*in, r.charsets.source(), *charset);
348: }
349: // @todo
350: // ifdef WIN32 do OEM->ANSI transcode on some(.cmd?) programs to
351: // match silent conversion in OS
352:
353: // exec!
354: PA_exec_result execution=
355: pa_exec(false/*forced_allow*/, script_name, &env, argv, *in);
356:
357: String *real_out=&execution.out;
358: String *real_err=&execution.err;
359: // transcode if necessary
360: if(charset) {
361: real_out=&Charset::transcode(*real_out, *charset, r.charsets.source());
362: real_err=&Charset::transcode(*real_err, *charset, r.charsets.source());
1.109 paf 363: }
364:
1.111 paf 365: VFile& self=GET_SELF(r, VFile);
1.109 paf 366:
1.111 paf 367: const String* body=real_out; // ^file:exec
368: const char* eol_marker=0; size_t eol_marker_size;
369: const String* header=0;
1.41 parser 370: if(cgi) { // ^file:cgi
1.111 paf 371: // construct with 'out' body and header
372: size_t dos_pos=real_out->pos("\r\n\r\n", 4);
373: size_t unix_pos=real_out->pos("\n\n", 2);
374:
375: bool unix_header_break;
376: switch((dos_pos!=STRING_NOT_FOUND?10:00) + (unix_pos!=STRING_NOT_FOUND?01:00)) {
377: case 10: // dos
378: unix_header_break=false;
379: break;
380: case 01: // unix
381: unix_header_break=true;
382: break;
383: case 11: // dos & unix
384: unix_header_break=unix_pos<dos_pos;
385: break;
386: default: // 00
387: unix_header_break=false; // calm down, compiler
1.74 paf 388: throw Exception(0,
1.111 paf 389: 0,
1.90 paf 390: "output does not contain CGI header; "
391: "exit status=%d; stdoutsize=%u; stdout: \"%s\"; stderrsize=%u; stderr: \"%s\"",
1.111 paf 392: execution.status,
393: (uint)real_out->length(), real_out->cstr(),
394: (uint)real_err->length(), real_err->cstr());
395: break; //never reached
396: }
397:
398: int header_break_pos;
399: if(unix_header_break) {
400: header_break_pos=unix_pos;
401: eol_marker="\n"; eol_marker_size=1;
402: } else {
403: header_break_pos=dos_pos;
404: eol_marker="\r\n"; eol_marker_size=2;
405: }
1.21 paf 406:
1.109 paf 407: header=&real_out->mid(0, header_break_pos);
1.111 paf 408: body=&real_out->mid(header_break_pos+eol_marker_size*2, real_out->length());
1.29 paf 409: }
1.41 parser 410: // body
1.111 paf 411: self.set(false/*not tainted*/, body->cstr(), body->length());
1.94 paf 412:
413: // $fields << header
1.98 paf 414: if(header && eol_marker) {
1.111 paf 415: ArrayString rows;
416: size_t pos_after=0;
417: header->split(rows, pos_after, eol_marker);
1.116 paf 418: Pass_cgi_header_attribute_info info={0, 0, 0};
1.111 paf 419: info.charset=&r.charsets.source();
420: info.fields=&self.fields();
1.94 paf 421: rows.for_each(pass_cgi_header_attribute, &info);
422: if(info.content_type)
1.111 paf 423: self.fields().put(content_type_name, info.content_type);
1.94 paf 424: }
1.21 paf 425:
1.42 parser 426: // $status
1.111 paf 427: self.fields().put(file_status_name, new VInt(execution.status));
1.21 paf 428:
429: // $stderr
1.111 paf 430: if(real_err->length())
1.21 paf 431: self.fields().put(
1.119 paf 432: String::Body("stderr"),
1.111 paf 433: new VString(*real_err));
1.21 paf 434: }
1.111 paf 435: static void _exec(Request& r, MethodParams& params) {
436: _exec_cgi(r, params, false);
1.41 parser 437: }
1.111 paf 438: static void _cgi(Request& r, MethodParams& params) {
439: _exec_cgi(r, params, true);
1.41 parser 440: }
441:
1.111 paf 442: static void _list(Request& r, MethodParams& params) {
443: Value& relative_path=params.as_no_junction(0, "path must not be code");
1.47 parser 444:
1.111 paf 445: const String* regexp;
1.47 parser 446: pcre *regexp_code;
1.81 paf 447: const int ovecsize=(1/*match*/)*3;
448: int ovector[ovecsize];
1.111 paf 449: if(params.count()>1) {
450: regexp=¶ms.as_no_junction(1, "regexp must not be code").as_string();
1.47 parser 451:
1.111 paf 452: const char* pattern=regexp->cstr();
453: const char* errptr;
1.47 parser 454: int erroffset;
455: regexp_code=pcre_compile(pattern, PCRE_EXTRA | PCRE_DOTALL,
456: &errptr, &erroffset,
1.111 paf 457: r.charsets.source().pcre_tables);
1.47 parser 458:
459: if(!regexp_code)
1.74 paf 460: throw Exception(0,
1.111 paf 461: ®exp->mid(erroffset, regexp->length()),
1.47 parser 462: "regular expression syntax error - %s", errptr);
1.114 paf 463: } else {
464: regexp=0; // not used, just to calm down compiler
1.47 parser 465: regexp_code=0;
1.114 paf 466: }
1.47 parser 467:
468:
1.111 paf 469: const char* absolute_path_cstr=r.absolute(relative_path.as_string()).cstr(String::L_FILE_SPEC);
1.47 parser 470:
1.111 paf 471: Table::columns_type columns(new ArrayString);
472: *columns+=new String("name");
473: Table& table=*new Table(columns);
1.47 parser 474:
475: LOAD_DIR(absolute_path_cstr,
1.111 paf 476: const char* file_name_cstr=ffblk.ff_name;
477: size_t file_name_size=strlen(file_name_cstr);
1.47 parser 478: bool suits=true;
479: if(regexp_code) {
480: int exec_result=pcre_exec(regexp_code, 0,
481: ffblk.ff_name, file_name_size, 0,
482: 0, ovector, ovecsize);
483:
484: if(exec_result==PCRE_ERROR_NOMATCH)
485: suits=false;
486: else if(exec_result<0) {
487: (*pcre_free)(regexp_code);
1.74 paf 488: throw Exception(0,
1.47 parser 489: regexp,
490: "regular expression execute (%d)",
491: exec_result);
492: }
493: }
494:
495: if(suits) {
1.111 paf 496: Table::element_type row(new ArrayString);
497: *row+=new String(pa_strdup(file_name_cstr, file_name_size), file_name_size, true);
498: table+=row;
1.47 parser 499: }
500: );
501:
502: if(regexp_code)
1.111 paf 503: pcre_free(regexp_code);
1.47 parser 504:
1.60 parser 505: // write out result
1.111 paf 506: r.write_no_lang(*new VTable(&table));
1.47 parser 507: }
1.21 paf 508:
1.69 paf 509: #ifndef DOXYGEN
510: struct Lock_execute_body_info {
1.111 paf 511: Request* r;
512: Value* body_code;
1.69 paf 513: };
514: #endif
1.111 paf 515: static void lock_execute_body(int , void *ainfo) {
516: Lock_execute_body_info& info=*static_cast<Lock_execute_body_info *>(ainfo);
1.69 paf 517: // execute body
1.78 paf 518: info.r->write_assign_lang(info.r->process(*info.body_code));
1.69 paf 519: };
1.111 paf 520: static void _lock(Request& r, MethodParams& params) {
521: const String& file_spec=r.absolute(params.as_string(0, "file name must be string"));
1.116 paf 522: Lock_execute_body_info info={
523: &r,
1.117 paf 524: ¶ms.as_junction(1, "body must be code")
1.116 paf 525: };
1.69 paf 526:
1.70 paf 527: file_write_action_under_lock(file_spec, "lock", lock_execute_body, &info);
1.69 paf 528: }
529:
1.111 paf 530: static int lastposafter(const String& s, size_t after, const char* substr, size_t substr_size, bool beforelast=false) {
1.114 paf 531: size_t size=0; // just to calm down compiler
1.89 paf 532: if(beforelast)
1.111 paf 533: size=s.length();
1.116 paf 534: size_t at;
1.112 paf 535: while((at=s.pos(String::Body(substr, substr_size), after))!=STRING_NOT_FOUND) {
1.89 paf 536: size_t newafter=at+substr_size/*skip substr*/;
537: if(beforelast && newafter==size)
538: break;
539: after=newafter;
540: }
541:
542: return after;
543: }
544:
1.111 paf 545: static void _find(Request& r, MethodParams& params) {
546: const String& file_name=params.as_no_junction(0, "file name must not be code").as_string();
547: const String* file_spec;
1.90 paf 548: if(file_name.first_char()=='/')
549: file_spec=&file_name;
550: else
1.111 paf 551: file_spec=&r.relative(r.request_info.uri, file_name);
1.90 paf 552:
553: // easy way
554: if(file_readable(r.absolute(*file_spec))) {
1.96 paf 555: r.write_assign_lang(*file_spec);
1.90 paf 556: return;
557: }
558:
559: // monkey way
560: int after_base_slash=lastposafter(*file_spec, 0, "/", 1);
1.111 paf 561: const String* dirname=&file_spec->mid(0, after_base_slash);
562: const String& basename=file_spec->mid(after_base_slash, file_spec->length());
1.90 paf 563:
564: int after_monkey_slash;
565: while((after_monkey_slash=lastposafter(*dirname, 0, "/", 1, true))>0) {
1.111 paf 566: String test_name;
567: test_name<<*(dirname=&dirname->mid(0, after_monkey_slash));
568: test_name<<basename;
569: if(file_readable(r.absolute(test_name))) {
570: r.write_assign_lang(test_name);
1.90 paf 571: return;
572: }
573: }
574:
575: // no way, not found
1.111 paf 576: if(params.count()==2) {
577: Value& not_found_code=params.as_junction(1, "not-found param must be code");
1.90 paf 578: r.write_pass_lang(r.process(not_found_code));
579: }
580: }
581:
1.111 paf 582: static void _dirname(Request& r, MethodParams& params) {
583: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 584: // /a/some.tar.gz > /a
585: // /a/b/ > /a
586: int afterslash=lastposafter(file_spec, 0, "/", 1, true);
587: if(afterslash>0)
588: r.write_assign_lang(file_spec.mid(0, afterslash==1?1:afterslash-1));
589: else
1.111 paf 590: r.write_assign_lang(String(".", 1));
1.89 paf 591: }
592:
1.111 paf 593: static void _basename(Request& r, MethodParams& params) {
594: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 595: // /a/some.tar.gz > some.tar.gz
596: int afterslash=lastposafter(file_spec, 0, "/", 1);
1.111 paf 597: r.write_assign_lang(file_spec.mid(afterslash, file_spec.length()));
1.89 paf 598: }
599:
1.111 paf 600: static void _justname(Request& r, MethodParams& params) {
601: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 602: // /a/some.tar.gz > some.tar
603: int afterslash=lastposafter(file_spec, 0, "/", 1);
604: int afterdot=lastposafter(file_spec, afterslash, ".", 1);
1.111 paf 605: r.write_assign_lang(file_spec.mid(afterslash, afterdot!=afterslash?afterdot-1:file_spec.length()));
1.89 paf 606: }
1.111 paf 607: static void _justext(Request& r, MethodParams& params) {
608: const String& file_spec=params.as_string(0, "file name must be string");
1.89 paf 609: // /a/some.tar.gz > gz
610: int afterdot=lastposafter(file_spec, 0, ".", 1);
611: if(afterdot>0)
1.111 paf 612: r.write_assign_lang(file_spec.mid(afterdot, file_spec.length()));
1.89 paf 613: }
614:
1.111 paf 615: static void _fullpath(Request& r, MethodParams& params) {
616: const String& file_spec=params.as_string(0, "file name must be string");
617: const String* result;
1.102 paf 618: if(file_spec.first_char()=='/')
619: result=&file_spec;
620: else {
621: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
622: const String& full_disk_path=r.absolute(file_spec);
1.111 paf 623: size_t document_root_length=strlen(r.request_info.document_root);
1.106 paf 624:
625: if(document_root_length>0) {
1.111 paf 626: char last_char=r.request_info.document_root[document_root_length-1];
1.106 paf 627: if(last_char == '/' || last_char == '\\')
628: --document_root_length;
629: }
1.111 paf 630: result=&full_disk_path.mid(document_root_length, full_disk_path.length());
1.102 paf 631: }
632: r.write_assign_lang(*result);
633: }
634:
1.121 paf 635: static void _sql_string(Request& r, MethodParams&) {
636: VFile& self=GET_SELF(r, VFile);
637:
638: const char *quoted=r.connection()->quote(self.value_ptr(), self.value_size());
639: r.write_assign_lang(*new String(quoted));
640: }
1.89 paf 641:
1.122 paf 642: #ifndef DOXYGEN
643: class File_sql_event_handlers: public SQL_Driver_query_event_handlers {
644: const String& statement_string; const char* statement_cstr;
645: int got_columns;
646: int got_cells;
647: public:
648: String::C value;
1.131 ! paf 649: const String* user_file_name;
! 650: const String* user_content_type;
1.122 paf 651: public:
652: File_sql_event_handlers(
653: const String& astatement_string, const char* astatement_cstr):
654: statement_string(astatement_string), statement_cstr(astatement_cstr),
655: got_columns(0),
656: got_cells(0),
657: user_file_name(0),
658: user_content_type(0) {}
659:
660: bool add_column(SQL_Error& error, const char* /*str*/, size_t /*length*/) {
661: if(got_columns++==3) {
662: error=SQL_Error("parser.runtime", "result must contain not more then 3 columns");
663: return true;
664: }
665: return false;
666: }
667: bool before_rows(SQL_Error& /*error*/ ) { /* ignore */ return false; }
668: bool add_row(SQL_Error& /*error*/) { /* ignore */ return false; }
669: bool add_row_cell(SQL_Error& error, const char* str, size_t length) {
670: try {
671: switch(got_cells++) {
672: case 0:
673: value=String::C(str, length);
674: break;
675: case 1:
1.131 ! paf 676: if(!user_file_name) // user not specified?
! 677: user_file_name=new String(str, length, true);
1.122 paf 678: break;
679: case 2:
1.131 ! paf 680: if(!user_content_type) // user not specified?
! 681: user_content_type=new String(str, length, true);
1.122 paf 682: break;
683: default:
684: error=SQL_Error("parser.runtime", "result must not contain more then one row, three rows");
685: return true;
686: }
687: return false;
688: } catch(...) {
689: error=SQL_Error("exception occured in File_sql_event_handlers::add_row_cell");
690: return true;
691: }
692: }
693: };
694: #endif
695: static void _sql(Request& r, MethodParams& params) {
1.131 ! paf 696: Value& statement=params.as_junction(0, "statement must be code");
1.122 paf 697:
698: Temp_lang temp_lang(r, String::L_SQL);
699: const String& statement_string=r.process_to_string(statement);
700: const char* statement_cstr=
701: statement_string.cstr(String::L_UNSPECIFIED, r.connection());
702: File_sql_event_handlers handlers(statement_string, statement_cstr);
1.131 ! paf 703:
! 704: if(params.count()>1)
! 705: if(HashStringValue* options=
! 706: params.as_no_junction(1, "param must not be code").get_hash()) {
! 707: int valid_options=0;
! 708: if(Value* vfilename=options->get(NAME_NAME)) {
! 709: valid_options++;
! 710: handlers.user_file_name=&vfilename->as_string();
! 711: }
! 712: if(Value* vcontent_type=options->get(CONTENT_TYPE_NAME)) {
! 713: valid_options++;
! 714: handlers.user_content_type=&vcontent_type->as_string();
! 715: }
! 716: if(valid_options!=options->count())
! 717: throw Exception("parser.runtime",
! 718: 0,
! 719: "called with invalid option");
! 720: }
! 721:
! 722:
1.122 paf 723: r.connection()->query(
1.123 paf 724: statement_cstr,
725: 0, 0,
726: 0, 0,
1.122 paf 727: handlers,
728: statement_string);
729:
730: if(!handlers.value)
731: throw Exception("parser.runtime",
732: 0,
733: "produced no result");
734:
1.131 ! paf 735: const char* user_file_name_cstr=handlers.user_file_name? handlers.user_file_name->cstr(): 0;
1.122 paf 736:
737: VString* vcontent_type=handlers.user_content_type?
738: new VString(*handlers.user_content_type)
739: : user_file_name_cstr?
740: new VString(r.mime_type_of(user_file_name_cstr))
741: : 0;
742: VFile& self=GET_SELF(r, VFile);
743: self.set(true/*tainted*/, handlers.value.str, handlers.value.length, user_file_name_cstr, vcontent_type);
744: }
745:
1.32 paf 746: // constructor
747:
1.111 paf 748: MFile::MFile(): Methoded("file") {
1.48 parser 749: // ^save[mode;file-name]
750: add_native_method("save", Method::CT_DYNAMIC, _save, 2, 2);
1.7 paf 751:
752: // ^delete[file-name]
1.32 paf 753: add_native_method("delete", Method::CT_STATIC, _delete, 1, 1);
1.45 parser 754:
755: // ^move[from-file-name;to-file-name]
756: add_native_method("move", Method::CT_STATIC, _move, 2, 2);
1.8 paf 757:
1.48 parser 758: // ^load[mode;disk-name]
759: // ^load[mode;disk-name;user-name]
760: add_native_method("load", Method::CT_DYNAMIC, _load, 2, 3);
1.25 paf 761:
762: // ^stat[disk-name]
1.32 paf 763: add_native_method("stat", Method::CT_DYNAMIC, _stat, 1, 1);
1.21 paf 764:
1.36 paf 765: // ^cgi[file-name]
766: // ^cgi[file-name;env hash]
767: // ^cgi[file-name;env hash;1cmd;2line;3ar;4g;5s]
1.41 parser 768: add_native_method("cgi", Method::CT_DYNAMIC, _cgi, 1, 2+10);
769:
770: // ^exec[file-name]
771: // ^exec[file-name;env hash]
772: // ^exec[file-name;env hash;1cmd;2line;3ar;4g;5s]
773: add_native_method("exec", Method::CT_DYNAMIC, _exec, 1, 2+10);
1.47 parser 774:
775: // ^file:list[path]
776: // ^file:list[path][regexp]
777: add_native_method("list", Method::CT_STATIC, _list, 1, 2);
1.69 paf 778:
779: // ^file:lock[path]{code}
780: add_native_method("lock", Method::CT_STATIC, _lock, 2, 2);
1.90 paf 781:
782: // ^find[file-name]
783: // ^find[file-name]{when-not-found}
784: add_native_method("find", Method::CT_STATIC, _find, 1, 2);
1.47 parser 785:
1.89 paf 786: // ^file:dirname[/a/some.tar.gz]=/a
787: // ^file:dirname[/a/b/]=/a
788: add_native_method("dirname", Method::CT_STATIC, _dirname, 1, 1);
789: // ^file:basename[/a/some.tar.gz]=some.tar.gz
790: add_native_method("basename", Method::CT_STATIC, _basename, 1, 1);
791: // ^file:justname[/a/some.tar.gz]=some.tar
792: add_native_method("justname", Method::CT_STATIC, _justname, 1, 1);
793: // ^file:justext[/a/some.tar.gz]=gz
794: add_native_method("justext", Method::CT_STATIC, _justext, 1, 1);
1.102 paf 795: // /some/page.html: ^file:fullpath[a.gif] => /some/a.gif
796: add_native_method("fullpath", Method::CT_STATIC, _fullpath, 1, 1);
1.121 paf 797:
798: // ^file.sql-string[]
799: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.122 paf 800:
801: // ^file::sql[[alt_name]]{}
802: add_native_method("sql", Method::CT_DYNAMIC, _sql, 1, 2);
1.1 paf 803: }
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