Annotation of parser3/src/main/pa_common.C, revision 1.275
1.15 paf 1: /** @file
1.16 paf 2: Parser: commonly functions.
3:
1.267 moko 4: Copyright (c) 2000-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.101 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.16 paf 6:
1.210 paf 7: * BASE64 part
8: * Authors: Michael Zucchi <notzed@ximian.com>
9: * Jeffrey Stedfast <fejj@ximian.com>
10: *
11: * Copyright 2000-2004 Ximian, Inc. (www.ximian.com)
12: *
13: * This program is free software; you can redistribute it and/or modify
14: * it under the terms of the GNU General Public License as published by
15: * the Free Software Foundation; either version 2 of the License, or
16: * (at your option) any later version.
17: *
18: * This program is distributed in the hope that it will be useful,
19: * but WITHOUT ANY WARRANTY; without even the implied warranty of
20: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21: * GNU General Public License for more details.
22: *
23: * You should have received a copy of the GNU General Public License
24: * along with this program; if not, write to the Free Software
25: * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
26: *
27: */
28:
1.1 paf 29: #include "pa_common.h"
1.4 paf 30: #include "pa_exception.h"
1.154 paf 31: #include "pa_hash.h"
1.14 paf 32: #include "pa_globals.h"
1.154 paf 33: #include "pa_charsets.h"
1.214 paf 34: #include "pa_http.h"
1.223 misha 35: #include "pa_request_charsets.h"
1.237 misha 36: #include "pcre.h"
1.241 misha 37: #include "pa_request.h"
1.98 paf 38:
1.273 moko 39: #ifdef _MSC_VER
40: #include <direct.h>
41: #endif
42:
1.275 ! moko 43: volatile const char * IDENT_PA_COMMON_C="$Id: pa_common.C,v 1.274 2013/07/23 07:51:30 moko Exp $" IDENT_PA_COMMON_H IDENT_PA_HASH_H IDENT_PA_ARRAY_H IDENT_PA_STACK_H;
1.267 moko 44:
1.93 paf 45: // some maybe-undefined constants
46:
1.82 paf 47: #ifndef _O_TEXT
48: # define _O_TEXT 0
49: #endif
50: #ifndef _O_BINARY
51: # define _O_BINARY 0
1.47 paf 52: #endif
1.80 paf 53:
1.138 paf 54: #ifdef HAVE_FTRUNCATE
55: # define PA_O_TRUNC 0
56: #else
57: # ifdef _O_TRUNC
58: # define PA_O_TRUNC _O_TRUNC
59: # else
60: # error you must have either ftruncate function or _O_TRUNC bit declared
61: # endif
1.154 paf 62: #endif
1.176 paf 63:
1.154 paf 64: // defines for globals
65:
66: #define FILE_STATUS_NAME "status"
67:
68: // globals
69:
70: const String file_status_name(FILE_STATUS_NAME);
71:
72: // functions
1.127 paf 73:
1.255 misha 74: bool capitalized(const char* s){
75: bool upper=true;
76: for(const char* c=s; *c; c++){
77: if(*c != (upper ? toupper((unsigned char)*c) : tolower((unsigned char)*c)))
78: return false;
79: upper=strchr("-_ ", *c) != 0;
80: }
81: return true;
82: }
83:
1.249 misha 84: const char* capitalize(const char* s){
1.255 misha 85: if(!s || capitalized(s))
86: return s;
87:
1.249 misha 88: char* result=pa_strdup(s);
89: if(result){
90: bool upper=true;
91: for(char* c=result; *c; c++){
92: *c=upper ? (char)toupper((unsigned char)*c) : (char)tolower((unsigned char)*c);
93: upper=strchr("-_ ", *c) != 0;
94: }
95: }
96: return (const char*)result;
97: }
98:
1.154 paf 99: void fix_line_breaks(char *str, size_t& length) {
1.87 paf 100: //_asm int 3;
1.154 paf 101: const char* const eob=str+length;
102: char* dest=str;
1.72 parser 103: // fix DOS: \r\n -> \n
104: // fix Macintosh: \r -> \n
1.154 paf 105: char* bol=str;
1.137 paf 106: while(char* eol=(char*)memchr(bol, '\r', eob -bol)) {
1.72 parser 107: size_t len=eol-bol;
108: if(dest!=bol)
1.260 misha 109: memmove(dest, bol, len);
1.72 parser 110: dest+=len;
1.126 paf 111: *dest++='\n';
1.72 parser 112:
1.126 paf 113: if(&eol[1]<eob && eol[1]=='\n') { // \r, \n = DOS
1.72 parser 114: bol=eol+2;
1.154 paf 115: length--;
1.126 paf 116: } else // \r, not \n = Macintosh
1.72 parser 117: bol=eol+1;
118: }
1.154 paf 119: // last piece without \r
1.72 parser 120: if(dest!=bol)
1.260 misha 121: memmove(dest, bol, eob-bol);
1.154 paf 122: str[length]=0; // terminating
1.72 parser 123: }
1.18 paf 124:
1.271 moko 125: char* file_read_text(Request_charsets& charsets, const String& file_spec, bool fail_on_read_problem, HashStringValue* params, bool transcode_result) {
126: File_read_result file=file_read(charsets, file_spec, true, params, fail_on_read_problem, 0, 0, 0, transcode_result);
1.154 paf 127: return file.success?file.str:0;
1.126 paf 128: }
129:
1.271 moko 130: char* file_load_text(Request& r, const String& file_spec, bool fail_on_read_problem, HashStringValue* params, bool transcode_result) {
131: File_read_result file=file_load(r, file_spec, true, params, fail_on_read_problem, 0, 0, 0, transcode_result);
1.241 misha 132: return file.success?file.str:0;
133: }
134:
1.206 paf 135: /// these options were handled but not checked elsewhere, now check them
1.239 misha 136: int pa_get_valid_file_options_count(HashStringValue& options) {
1.206 paf 137: int result=0;
138: if(options.get(PA_SQL_LIMIT_NAME))
139: result++;
140: if(options.get(PA_SQL_OFFSET_NAME))
141: result++;
142: if(options.get(PA_COLUMN_SEPARATOR_NAME))
143: result++;
144: if(options.get(PA_COLUMN_ENCLOSER_NAME))
145: result++;
1.223 misha 146: if(options.get(PA_CHARSET_NAME))
147: result++;
1.206 paf 148: return result;
149: }
150:
1.123 paf 151: #ifndef DOXYGEN
152: struct File_read_action_info {
1.154 paf 153: char **data; size_t *data_size;
1.188 paf 154: char* buf; size_t offset; size_t count;
1.126 paf 155: };
1.123 paf 156: #endif
1.271 moko 157:
158: static void file_read_action(struct stat& finfo, int f, const String& file_spec, const char* /*fname*/, bool as_text, void *context) {
1.126 paf 159: File_read_action_info& info=*static_cast<File_read_action_info *>(context);
1.188 paf 160: size_t to_read_size=info.count;
161: if(!to_read_size)
162: to_read_size=(size_t)finfo.st_size;
163: assert( !(info.buf && as_text) );
1.271 moko 164: if(to_read_size) {
1.188 paf 165: if(info.offset)
166: lseek(f, info.offset, SEEK_SET);
1.271 moko 167: *info.data=info.buf ? info.buf : (char *)pa_malloc_atomic(to_read_size+1);
168: ssize_t result=read(f, *info.data, to_read_size);
169: if(result<0)
170: throw Exception("file.read", &file_spec, "read failed: %s (%d)", strerror(errno), errno);
171: *info.data_size=result;
1.123 paf 172: } else { // empty file
1.209 paf 173: // for both, text and binary: for text we need that terminator, for binary we need nonzero pointer to be able to save such files
1.253 misha 174: *info.data=(char *)pa_malloc_atomic(1);
1.209 paf 175: *(char*)(*info.data)=0;
1.123 paf 176: *info.data_size=0;
177: return;
178: }
1.126 paf 179: }
1.241 misha 180:
1.154 paf 181: File_read_result file_read(Request_charsets& charsets, const String& file_spec,
1.229 misha 182: bool as_text, HashStringValue *params,
183: bool fail_on_read_problem,
1.234 misha 184: char* buf, size_t offset, size_t count, bool transcode_text_result) {
1.167 paf 185: File_read_result result={false, 0, 0, 0};
1.241 misha 186: if(params){
187: int valid_options=pa_get_valid_file_options_count(*params);
188: if(valid_options!=params->count())
1.262 misha 189: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.241 misha 190: }
1.203 paf 191:
1.241 misha 192: File_read_action_info info={&result.str, &result.length, buf, offset, count};
1.161 paf 193:
1.241 misha 194: result.success=file_read_action_under_lock(file_spec,
195: "read", file_read_action, &info,
196: as_text, fail_on_read_problem);
1.223 misha 197:
1.241 misha 198: if(as_text){
199: if(result.success){
1.263 misha 200: Charset* asked_charset=0;
1.236 misha 201: if(result.length>=3 && strncmp(result.str, "\xEF\xBB\xBF", 3)==0){
1.240 misha 202: // skip UTF-8 signature (BOM code)
1.236 misha 203: result.str+=3;
204: result.length-=3;
1.263 misha 205: asked_charset=&UTF8_charset;
1.236 misha 206: }
207:
1.263 misha 208: if(params)
209: if(Value* vcharset_name=params->get(PA_CHARSET_NAME))
210: asked_charset=&::charsets.get(vcharset_name->as_string().change_case(charsets.source(), String::CC_UPPER));
211:
212: if(result.length && transcode_text_result && asked_charset){ // length must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below
213: String::C body=String::C(result.str, result.length);
214: body=Charset::transcode(body, *asked_charset, charsets.source());
1.236 misha 215:
1.263 misha 216: result.str=const_cast<char*>(body.str); // hacking a little
217: result.length=body.length;
1.131 paf 218: }
219: }
1.241 misha 220: if(result.length)
221: fix_line_breaks(result.str, result.length);
1.123 paf 222: }
1.241 misha 223:
224: return result;
225: }
226:
227: File_read_result file_load(Request& r, const String& file_spec,
228: bool as_text, HashStringValue *params,
229: bool fail_on_read_problem,
230: char* buf, size_t offset, size_t count, bool transcode_text_result) {
231:
232: File_read_result result={false, 0, 0, 0};
233: if(file_spec.starts_with("http://")) {
234: if(offset || count)
235: throw Exception(PARSER_RUNTIME,
236: 0,
237: "offset and load options are not supported for HTTP:// file load");
238:
239: // fail on read problem
240: File_read_http_result http=pa_internal_file_read_http(r, file_spec, as_text, params, transcode_text_result);
241: result.success=true;
242: result.str=http.str;
243: result.length=http.length;
244: result.headers=http.headers;
245: } else
246: result=
247: file_read(r.charsets, file_spec, as_text, params, fail_on_read_problem, buf, offset, count, transcode_text_result);
1.126 paf 248:
249: return result;
1.123 paf 250: }
251:
1.257 pretende 252:
1.154 paf 253: #ifdef PA_SAFE_MODE
1.259 misha 254: void check_safe_mode(struct stat finfo, const String& file_spec, const char* fname) {
1.154 paf 255: if(finfo.st_uid/*foreign?*/!=geteuid()
256: && finfo.st_gid/*foreign?*/!=getegid())
1.224 misha 257: throw Exception(PARSER_RUNTIME,
1.154 paf 258: &file_spec,
259: "parser is in safe mode: "
260: "reading files of foreign group and user disabled "
261: "[recompile parser with --disable-safe-mode configure option], "
262: "actual filename '%s', "
263: "fuid(%d)!=euid(%d) or fgid(%d)!=egid(%d)",
264: fname,
265: finfo.st_uid, geteuid(),
1.259 misha 266: finfo.st_gid, getegid());
267: }
268: #else
269: void check_safe_mode(struct stat, const String&, const char*) {
270: }
1.257 pretende 271: #endif
1.259 misha 272:
1.257 pretende 273:
1.149 paf 274:
1.154 paf 275: bool file_read_action_under_lock(const String& file_spec,
1.126 paf 276: const char* action_name, File_read_action action, void *context,
277: bool as_text,
1.123 paf 278: bool fail_on_read_problem) {
1.247 misha 279: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.33 paf 280: int f;
281:
282: // first open, next stat:
1.45 paf 283: // directory update of NTFS hard links performed on open.
1.33 paf 284: // ex:
285: // a.html:^test[] and b.html hardlink to a.html
286: // user inserts ! before ^test in a.html
1.126 paf 287: // directory entry of b.html in NTFS not updated at once,
1.35 paf 288: // they delay update till open, so we would receive "!^test[" string
289: // if would do stat, next open.
1.123 paf 290: // later: it seems, even this does not help sometimes
1.229 misha 291: if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) {
1.123 paf 292: try {
1.162 paf 293: if(pa_lock_shared_blocking(f)!=0)
1.126 paf 294: throw Exception("file.lock",
1.123 paf 295: &file_spec,
296: "shared lock failed: %s (%d), actual filename '%s'",
1.154 paf 297: strerror(errno), errno, fname);
1.123 paf 298:
1.124 paf 299: struct stat finfo;
1.254 misha 300: if(fstat(f, &finfo)!=0)
1.124 paf 301: throw Exception("file.missing", // hardly possible: we just opened it OK
302: &file_spec,
303: "stat failed: %s (%d), actual filename '%s'",
1.154 paf 304: strerror(errno), errno, fname);
1.124 paf 305:
1.149 paf 306: check_safe_mode(finfo, file_spec, fname);
1.32 paf 307:
1.154 paf 308: action(finfo, f, file_spec, fname, as_text, context);
1.123 paf 309: } catch(...) {
1.162 paf 310: pa_unlock(f);close(f);
1.123 paf 311: if(fail_on_read_problem)
1.154 paf 312: rethrow;
1.123 paf 313: return false;
314: }
1.87 paf 315:
1.162 paf 316: pa_unlock(f);close(f);
1.72 parser 317: return true;
1.229 misha 318: } else {
1.118 paf 319: if(fail_on_read_problem)
1.256 misha 320: throw Exception(errno==EACCES?"file.access"
321: :(errno==ENOENT || errno==ENOTDIR || errno==ENODEV)?"file.missing":0,
1.118 paf 322: &file_spec,
1.123 paf 323: "%s failed: %s (%d), actual filename '%s'",
1.154 paf 324: action_name, strerror(errno), errno, fname);
1.118 paf 325: return false;
326: }
1.8 paf 327: }
328:
1.202 paf 329: void create_dir_for_file(const String& file_spec) {
1.63 parser 330: size_t pos_after=1;
1.154 paf 331: size_t pos_before;
332: while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) {
1.247 misha 333: mkdir(file_spec.mid(0, pos_before).taint_cstr(String::L_FILE_SPEC), 0775);
1.63 parser 334: pos_after=pos_before+1;
335: }
336: }
337:
1.98 paf 338: bool file_write_action_under_lock(
1.28 paf 339: const String& file_spec,
1.225 misha 340: const char* action_name,
341: File_write_action action,
342: void *context,
1.126 paf 343: bool as_text,
344: bool do_append,
345: bool do_block,
1.110 paf 346: bool fail_on_lock_problem) {
1.247 misha 347: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.28 paf 348: int f;
1.80 paf 349: if(access(fname, W_OK)!=0) // no
1.126 paf 350: create_dir_for_file(file_spec);
1.50 paf 351:
1.80 paf 352: if((f=open(fname,
353: O_CREAT|O_RDWR
354: |(as_text?_O_TEXT:_O_BINARY)
1.138 paf 355: |(do_append?O_APPEND:PA_O_TRUNC), 0664))>=0) {
1.162 paf 356: if((do_block?pa_lock_exclusive_blocking(f):pa_lock_exclusive_nonblocking(f))!=0) {
1.126 paf 357: Exception e("file.lock",
1.110 paf 358: &file_spec,
359: "shared lock failed: %s (%d), actual filename '%s'",
1.154 paf 360: strerror(errno), errno, fname);
1.126 paf 361: close(f);
1.110 paf 362: if(fail_on_lock_problem)
363: throw e;
1.98 paf 364: return false;
365: }
1.96 paf 366:
1.158 paf 367: try {
1.254 misha 368: #if (defined(HAVE_FCHMOD) && defined(PA_SAFE_MODE))
369: struct stat finfo;
370: if(fstat(f, &finfo)==0 && finfo.st_mode & 0111)
371: fchmod(f, finfo.st_mode & 0666/*clear executable bits*/); // backward: ignore errors if any
372: #endif
373: action(f, context);
1.158 paf 374: } catch(...) {
1.138 paf 375: #ifdef HAVE_FTRUNCATE
1.104 paf 376: if(!do_append)
1.125 paf 377: ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower
1.138 paf 378: #endif
1.162 paf 379: pa_unlock(f);close(f);
1.154 paf 380: rethrow;
1.158 paf 381: }
1.80 paf 382:
1.138 paf 383: #ifdef HAVE_FTRUNCATE
1.104 paf 384: if(!do_append)
1.125 paf 385: ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov <virtan@rotabanner.com> for discovering]
1.138 paf 386: #endif
1.162 paf 387: pa_unlock(f);close(f);
1.98 paf 388: return true;
1.80 paf 389: } else
1.126 paf 390: throw Exception(errno==EACCES?"file.access":0,
1.80 paf 391: &file_spec,
1.96 paf 392: "%s failed: %s (%d), actual filename '%s'",
1.154 paf 393: action_name, strerror(errno), errno, fname);
1.96 paf 394: // here should be nothing, see rethrow above
395: }
396:
397: #ifndef DOXYGEN
398: struct File_write_action_info {
1.250 misha 399: const char* str;
400: size_t length;
1.126 paf 401: };
1.96 paf 402: #endif
1.271 moko 403:
1.96 paf 404: static void file_write_action(int f, void *context) {
1.126 paf 405: File_write_action_info& info=*static_cast<File_write_action_info *>(context);
1.154 paf 406: if(info.length) {
1.271 moko 407: ssize_t written=write(f, info.str, info.length);
1.116 paf 408: if(written<0)
1.271 moko 409: throw Exception("file.write", 0, "write failed: %s (%d)", strerror(errno), errno);
1.275 ! moko 410: if((size_t)written!=info.length)
1.271 moko 411: throw Exception("file.write", 0, "write failed: %u of %u bytes written", written, info.length);
1.113 paf 412: }
1.96 paf 413: }
1.271 moko 414:
1.96 paf 415: void file_write(
1.250 misha 416: Request_charsets& charsets,
417: const String& file_spec,
418: const char* data,
419: size_t size,
1.126 paf 420: bool as_text,
1.250 misha 421: bool do_append,
422: Charset* asked_charset) {
423:
424: if(as_text && asked_charset){
425: String::C body=String::C(data, size);
426: body=Charset::transcode(body, charsets.source(), *asked_charset);
427: data=body.str;
428: size=body.length;
429: };
430:
1.126 paf 431: File_write_action_info info={data, size};
1.225 misha 432:
1.98 paf 433: file_write_action_under_lock(
1.154 paf 434: file_spec,
1.225 misha 435: "write",
436: file_write_action,
437: &info,
1.154 paf 438: as_text,
439: do_append);
1.30 paf 440: }
441:
1.261 misha 442: static size_t get_dir(char* fname, size_t helper_length){
443: bool dir=false;
444: size_t pos=0;
445: for(pos=helper_length; pos; pos--){
446: char c=fname[pos-1];
447: if(c=='/' || c=='\\'){
448: fname[pos-1]=0;
449: dir=true;
450: } else if(dir) break;
451: }
452: return pos;
453: }
454:
455: static bool entry_readable(char* fname, bool need_dir) {
456: if(need_dir){
457: size_t size=strlen(fname);
458: while(size) {
459: char c=fname[size-1];
460: if(c=='/' || c=='\\')
461: fname[--size]=0;
462: else
463: break;
464: }
465: }
466:
467: struct stat finfo;
468: if(access(fname, R_OK)==0 && entry_exists(fname, &finfo)) {
469: bool is_dir=(finfo.st_mode&S_IFDIR) != 0;
470: return is_dir==need_dir;
471: }
472: return false;
473: }
474:
475: static bool entry_readable(const String& file_spec, bool need_dir) {
476: return entry_readable(file_spec.taint_cstrm(String::L_FILE_SPEC), need_dir);
477: }
478:
1.63 parser 479: // throws nothing! [this is required in file_move & file_delete]
1.261 misha 480: static void rmdir(const String& file_spec, size_t pos_after=0) {
481: char* dir_spec=file_spec.taint_cstrm(String::L_FILE_SPEC);
482: size_t length=strlen(dir_spec);
483: while( (length=get_dir(dir_spec, length)) && (length > pos_after) ){
1.274 moko 484: #ifdef _MSC_VER
1.261 misha 485: if(!entry_readable(dir_spec, true))
486: break;
487: DWORD attrs=GetFileAttributes(dir_spec);
488: if(
489: (attrs==INVALID_FILE_ATTRIBUTES)
490: || !(attrs & FILE_ATTRIBUTE_DIRECTORY)
491: || (attrs & FILE_ATTRIBUTE_REPARSE_POINT)
492: )
493: break;
494: #endif
495: if( rmdir(dir_spec) )
496: break;
497: };
1.50 paf 498: }
1.239 misha 499:
1.269 misha 500: bool file_delete(const String& file_spec, bool fail_on_problem, bool keep_empty_dirs) {
1.247 misha 501: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.54 parser 502: if(unlink(fname)!=0)
1.164 paf 503: if(fail_on_problem)
1.126 paf 504: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
1.93 paf 505: &file_spec,
506: "unlink failed: %s (%d), actual filename '%s'",
1.154 paf 507: strerror(errno), errno, fname);
1.93 paf 508: else
509: return false;
1.50 paf 510:
1.269 misha 511: if(!keep_empty_dirs)
512: rmdir(file_spec, 1);
513:
1.93 paf 514: return true;
1.60 parser 515: }
1.239 misha 516:
1.269 misha 517: void file_move(const String& old_spec, const String& new_spec, bool keep_empty_dirs) {
1.247 misha 518: const char* old_spec_cstr=old_spec.taint_cstr(String::L_FILE_SPEC);
519: const char* new_spec_cstr=new_spec.taint_cstr(String::L_FILE_SPEC);
1.63 parser 520:
1.126 paf 521: create_dir_for_file(new_spec);
1.63 parser 522:
1.60 parser 523: if(rename(old_spec_cstr, new_spec_cstr)!=0)
1.126 paf 524: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
1.60 parser 525: &old_spec,
526: "rename failed: %s (%d), actual filename '%s' to '%s'",
1.154 paf 527: strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.63 parser 528:
1.269 misha 529: if(!keep_empty_dirs)
530: rmdir(old_spec, 1);
1.31 paf 531: }
532:
1.51 paf 533:
1.126 paf 534: bool entry_exists(const char* fname, struct stat *afinfo) {
1.118 paf 535: struct stat lfinfo;
536: bool result=stat(fname, &lfinfo)==0;
537: if(afinfo)
538: *afinfo=lfinfo;
539: return result;
1.119 paf 540: }
541:
542: bool entry_exists(const String& file_spec) {
1.247 misha 543: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.126 paf 544: return entry_exists(fname, 0);
1.118 paf 545: }
546:
1.215 paf 547: bool file_exist(const String& file_spec) {
1.126 paf 548: return entry_readable(file_spec, false);
1.51 paf 549: }
1.239 misha 550:
1.215 paf 551: bool dir_exists(const String& file_spec) {
1.126 paf 552: return entry_readable(file_spec, true);
1.65 parser 553: }
1.239 misha 554:
1.215 paf 555: const String* file_exist(const String& path, const String& name) {
1.154 paf 556: String& result=*new String(path);
1.270 moko 557: if(path.last_char() != '/')
558: result << "/";
1.154 paf 559: result << name;
1.215 paf 560: return file_exist(result)?&result:0;
1.43 paf 561: }
1.239 misha 562:
1.43 paf 563: bool file_executable(const String& file_spec) {
1.247 misha 564: return access(file_spec.taint_cstr(String::L_FILE_SPEC), X_OK)==0;
1.44 paf 565: }
566:
1.64 parser 567: bool file_stat(const String& file_spec,
1.229 misha 568: size_t& rsize,
569: time_t& ratime,
570: time_t& rmtime,
571: time_t& rctime,
572: bool fail_on_read_problem) {
1.247 misha 573: const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC);
1.154 paf 574: struct stat finfo;
1.44 paf 575: if(stat(fname, &finfo)!=0)
1.64 parser 576: if(fail_on_read_problem)
1.126 paf 577: throw Exception("file.missing",
1.67 parser 578: &file_spec,
579: "getting file size failed: %s (%d), real filename '%s'",
1.154 paf 580: strerror(errno), errno, fname);
1.64 parser 581: else
582: return false;
1.58 parser 583: rsize=finfo.st_size;
584: ratime=finfo.st_atime;
585: rmtime=finfo.st_mtime;
586: rctime=finfo.st_ctime;
1.64 parser 587: return true;
1.18 paf 588: }
589:
1.126 paf 590: char* getrow(char* *row_ref, char delim) {
1.229 misha 591: char* result=*row_ref;
592: if(result) {
1.126 paf 593: *row_ref=strchr(result, delim);
1.8 paf 594: if(*row_ref)
595: *((*row_ref)++)=0;
596: else if(!*result)
597: return 0;
1.229 misha 598: }
599: return result;
1.8 paf 600: }
601:
1.126 paf 602: char* lsplit(char* string, char delim) {
1.229 misha 603: if(string) {
1.126 paf 604: char* v=strchr(string, delim);
1.8 paf 605: if(v) {
606: *v=0;
607: return v+1;
608: }
1.229 misha 609: }
610: return 0;
1.8 paf 611: }
612:
1.126 paf 613: char* lsplit(char* *string_ref, char delim) {
1.229 misha 614: char* result=*string_ref;
1.126 paf 615: char* next=lsplit(*string_ref, delim);
1.229 misha 616: *string_ref=next;
617: return result;
1.9 paf 618: }
619:
1.126 paf 620: char* rsplit(char* string, char delim) {
1.229 misha 621: if(string) {
1.126 paf 622: char* v=strrchr(string, delim);
1.18 paf 623: if(v) {
1.9 paf 624: *v=0;
625: return v+1;
626: }
1.229 misha 627: }
628: return NULL;
1.10 paf 629: }
630:
1.229 misha 631:
632: // format: %[flags][width][.precision]type http://msdn.microsoft.com/ru-ru/library/56e442dc(en-us,VS.80).aspx
633: // flags: '-', '+', ' ', '#', '0' http://msdn.microsoft.com/ru-ru/library/8aky45ct(en-us,VS.80).aspx
634: // width, precision: non negative decimal number
635: enum FormatType {
636: FormatInvalid,
637: FormatInt,
638: FormatUInt,
639: FormatDouble
640: };
1.272 moko 641: FormatType format_type(const char* fmt){
1.229 misha 642: enum FormatState {
643: Percent,
644: Flags,
645: Width,
646: Precision,
647: Done
648: } state=Percent;
649:
650: FormatType result=FormatInvalid;
651:
1.272 moko 652: const char* pos=fmt;
1.229 misha 653: while(char c=*(pos++)){
654: switch(state){
655: case Percent:
656: if(c=='%'){
657: state=Flags;
658: } else {
659: return FormatInvalid; // 1st char must be '%' only
660: }
661: break;
662: case Flags:
663: if(strchr("-+ #0", c)!=0){
664: break;
665: }
666: // go to the next step
667: case Width:
668: if(c=='.'){
669: state=Precision;
670: break;
671: }
672: // go to the next step
673: case Precision:
674: if(c>='0' && c<='9'){
675: if(state == Flags) state=Width; // no more flags
676: break;
677: } else if(c=='d' || c=='i'){
678: result=FormatInt;
679: } else if(strchr("feEgG", c)!=0){
680: result=FormatDouble;
681: } else if(strchr("uoxX", c)!=0){
682: result=FormatUInt;
683: } else {
684: return FormatInvalid; // invalid char
685: }
686: state=Done;
687: break;
688: case Done:
689: return FormatInvalid; // no chars allowed after 'type'
690: }
691: }
692: return result;
693: }
694:
695:
1.272 moko 696: const char* format(double value, const char* fmt) {
1.229 misha 697: char local_buf[MAX_NUMBER];
1.235 misha 698: int size=-1;
1.229 misha 699:
700: if(fmt && strlen(fmt)){
701: switch(format_type(fmt)){
702: case FormatDouble:
703: size=snprintf(local_buf, sizeof(local_buf), fmt, value);
704: break;
705: case FormatInt:
706: size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value);
707: break;
708: case FormatUInt:
1.126 paf 709: size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value);
1.229 misha 710: break;
711: case FormatInvalid:
712: throw Exception(PARSER_RUNTIME,
713: 0,
714: "Incorrect format string '%s' was specified.", fmt);
715: }
716: } else
717: size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value);
718:
719: if(size < 0 || size >= MAX_NUMBER-1){ // on win32 we manually reduce max size while printing
720: throw Exception(PARSER_RUNTIME,
721: 0,
722: "Error occure white executing snprintf with format string '%s'.", fmt);
723: }
724:
1.235 misha 725: return pa_strdup(local_buf, (size_t)size);
1.12 paf 726: }
727:
1.36 paf 728: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 729: #ifdef WIN32
1.187 paf 730: size_t to_write = size;
1.12 paf 731: do{
1.154 paf 732: int chunk_written=fwrite(buf, 1, min((size_t)8*0x400, size), stdout);
1.12 paf 733: if(chunk_written<=0)
734: break;
735: size-=chunk_written;
1.36 paf 736: buf=((const char*)buf)+chunk_written;
1.126 paf 737: } while(size>0);
1.12 paf 738:
1.187 paf 739: return to_write-size;
1.12 paf 740: #else
1.126 paf 741: return fwrite(buf, 1, size, stdout);
1.12 paf 742: #endif
1.2 paf 743: }
1.14 paf 744:
1.229 misha 745: enum EscapeState {
746: EscapeRest,
747: EscapeFirst,
748: EscapeSecond,
749: EscapeUnicode
750: };
751:
1.236 misha 752: // @todo prescan for reduce required size (unescaped sting in 1 byte charset requires less memory usually)
1.258 misha 753: char* unescape_chars(const char* cp, int len, Charset* charset, bool js){
1.236 misha 754: char* s=new(PointerFreeGC) char[len+1]; // must be enough (%uXXXX==6 bytes, max utf-8 char length==6 bytes)
1.230 misha 755: char* dst=s;
1.229 misha 756: EscapeState escapeState=EscapeRest;
757: uint escapedValue=0;
758: int srcPos=0;
1.230 misha 759: short int jsCnt=0;
1.236 misha 760: while(srcPos<len){
1.229 misha 761: uchar c=(uchar)cp[srcPos];
1.258 misha 762: if(c=='%' || (c=='\\' && js)){
1.229 misha 763: escapeState=EscapeFirst;
764: } else {
765: switch(escapeState) {
766: case EscapeRest:
1.258 misha 767: if(!js && c=='+'){
1.230 misha 768: *dst++=' ';
1.229 misha 769: } else {
1.230 misha 770: *dst++=c;
1.229 misha 771: }
772: break;
773: case EscapeFirst:
1.232 misha 774: if(charset && c=='u'){
1.229 misha 775: // escaped unicode value: %u0430
776: jsCnt=0;
777: escapedValue=0;
778: escapeState=EscapeUnicode;
779: } else {
1.231 misha 780: if(isxdigit(c)){
1.229 misha 781: escapedValue=hex_value[c] << 4;
782: escapeState=EscapeSecond;
783: } else {
1.230 misha 784: *dst++=c;
1.229 misha 785: escapeState=EscapeRest;
786: }
787: }
788: break;
789: case EscapeSecond:
1.231 misha 790: if(isxdigit(c)){
1.229 misha 791: escapedValue+=hex_value[c];
1.230 misha 792: *dst++=(char)escapedValue;
1.229 misha 793: }
794: escapeState=EscapeRest;
795: break;
796: case EscapeUnicode:
1.231 misha 797: if(isxdigit(c)){
1.229 misha 798: escapedValue=(escapedValue << 4) + hex_value[c];
799: if(++jsCnt==4){
1.230 misha 800: // transcode utf8 char to client charset (we can lost some chars here)
1.232 misha 801: charset->store_Char((XMLByte*&)dst, (XMLCh)escapedValue, '?');
1.229 misha 802: escapeState=EscapeRest;
803: }
804: } else {
805: // not full unicode value
806: escapeState=EscapeRest;
807: }
808: break;
809: }
810: }
811:
812: srcPos++;
813: }
814:
1.230 misha 815: *dst=0; // zero-termination
1.229 misha 816: return s;
817: }
1.24 paf 818:
1.268 misha 819: char *search_stop(char*& current, char cstop_at) {
820: // sanity check
821: if(!current)
822: return 0;
823:
824: // skip leading WS
825: while(*current==' ' || *current=='\t')
826: current++;
827: if(!*current)
828: return current=0;
829:
830: char *result=current;
831: if(char *pstop_at=strchr(current, cstop_at)) {
832: *pstop_at=0;
833: current=pstop_at+1;
834: } else
835: current=0;
836: return result;
837: }
838:
1.24 paf 839: #ifdef WIN32
1.126 paf 840: void back_slashes_to_slashes(char* s) {
1.24 paf 841: if(s)
842: for(; *s; s++)
843: if(*s=='\\')
1.126 paf 844: *s='/';
1.24 paf 845: }
846: #endif
1.41 paf 847:
1.231 misha 848: bool StrStartFromNC(const char* str, const char* substr, bool equal){
1.41 paf 849: while(true) {
1.231 misha 850: if(!(*substr)){
851: if(!(*str))
1.41 paf 852: return true;
853: else
1.231 misha 854: return !equal;
855: }
856: if(!(*str))
857: return false;
858: if(isalpha((unsigned char)*str)) {
859: if(tolower((unsigned char)*str)!=tolower((unsigned char)*substr))
1.41 paf 860: return false;
1.231 misha 861: } else if((*str) != (*substr))
1.41 paf 862: return false;
1.231 misha 863: str++;
864: substr++;
1.41 paf 865: }
1.57 parser 866: }
867:
1.232 misha 868: size_t strpos(const char *str, const char *substr) {
869: const char *p = strstr(str, substr);
870: return (p==0)?STRING_NOT_FOUND:p-str;
871: }
872:
873: // content-type: xxx; charset=WE-NEED-THIS
874: // content-type: xxx; charset="WE-NEED-THIS"
875: // content-type: xxx; charset="WE-NEED-THIS";
1.248 misha 876: Charset* detect_charset(const char* content_type){
1.233 misha 877: if(content_type){
1.245 misha 878: char* CONTENT_TYPE=pa_strdup(content_type);
1.248 misha 879:
880: for(char *p=CONTENT_TYPE; *p; p++)
881: *p=(char)toupper((unsigned char)*p);
1.233 misha 882:
883: if(const char* begin=strstr(CONTENT_TYPE, "CHARSET=")){
884: begin+=8; // skip "CHARSET="
885: char* end=0;
886: if(*begin && (*begin=='"' || *begin =='\'')){
887: char quote=*begin;
888: begin++;
889: end=(char*)strchr(begin, quote);
890: }
891: if(!end)
892: end=(char*)strchr(begin, ';');
893:
1.244 misha 894: if(end)
1.233 misha 895: *end=0; // terminator
896:
1.245 misha 897: return *begin?&charsets.get(begin):0;
1.232 misha 898: }
899: }
900: return 0;
901: }
902:
903:
1.84 paf 904: static bool isLeap(int year) {
1.229 misha 905: return !(
906: (year % 4) || ((year % 400) && !(year % 100))
907: );
1.57 parser 908: }
909:
910: int getMonthDays(int year, int month) {
1.220 misha 911: static int monthDays[]={
1.229 misha 912: 31,
913: 28,
914: 31,
915: 30,
916: 31,
917: 30,
918: 31,
919: 31,
920: 30,
921: 31,
922: 30,
923: 31
924: };
1.228 misha 925: return (month == 1 /* january -- 0 */ && isLeap(year)) ? 29 : monthDays[month];
1.41 paf 926: }
1.69 parser 927:
1.226 misha 928: int remove_crlf(char* start, char* end) {
929: char* from=start;
930: char* to=start;
931: bool skip=false;
932: while(from < end){
933: switch(*from){
934: case '\n':
935: case '\r':
936: case '\t':
937: case ' ':
938: if(!skip){
939: *to=' ';
940: to++;
941: skip=true;
942: }
943: break;
944: default:
945: if(from != to)
946: *to=*from;
947: to++;
948: skip=false;
1.69 parser 949: }
1.226 misha 950: from++;
951: }
952: return to-start;
1.91 paf 953: }
954:
955:
956: /// must be last in this file
957: #undef vsnprintf
1.126 paf 958: int __vsnprintf(char* b, size_t s, const char* f, va_list l) {
1.91 paf 959: if(!s)
960: return 0;
961:
962: int r;
963: // note: on win32& maybe somewhere else
964: // vsnprintf do not writes terminating 0 in 'buffer full' case, reducing
965: --s;
1.172 paf 966:
967: // clients do not check for negative 's', feature: ignore such prints
968: if((ssize_t)s<0)
969: return 0;
970:
1.273 moko 971: #ifdef _MSC_VER
1.91 paf 972: /*
973: win32:
974: mk:@MSITStore:C:\Program%20Files\Microsoft%20Visual%20Studio\MSDN\2001APR\1033\vccore.chm::/html/_crt__vsnprintf.2c_._vsnwprintf.htm
975:
1.154 paf 976: if the number of bytes to write exceeds buffer, then count bytes are written and Ö1 is returned
1.91 paf 977: */
1.126 paf 978: r=_vsnprintf(b, s, f, l);
1.91 paf 979: if(r<0)
980: r=s;
981: #else
1.126 paf 982: r=vsnprintf(b, s, f, l);
1.91 paf 983: /*
984: solaris:
985: man vsnprintf
986:
987: The snprintf() function returns the number of characters
988: formatted, that is, the number of characters that would have
989: been written to the buffer if it were large enough. If the
990: value of n is 0 on a call to snprintf(), an unspecified
991: value less than 1 is returned.
992: */
993:
994: if(r<0)
995: r=0;
1.167 paf 996: else if((size_t)r>s)
1.91 paf 997: r=s;
998: #endif
999: b[r]=0;
1000: return r;
1001: }
1002:
1.126 paf 1003: int __snprintf(char* b, size_t s, const char* f, ...) {
1.91 paf 1004: va_list l;
1.241 misha 1005: va_start(l, f);
1006: int r=__vsnprintf(b, s, f, l);
1007: va_end(l);
1.91 paf 1008: return r;
1.178 paf 1009: }
1010:
1011: /* mime64 functions are from libgmime[http://spruce.sourceforge.net/gmime/] lib */
1012: /*
1013: * Authors: Michael Zucchi <notzed@helixcode.com>
1014: * Jeffrey Stedfast <fejj@helixcode.com>
1015: *
1016: * Copyright 2000 Helix Code, Inc. (www.helixcode.com)
1017: *
1018: * This program is free software; you can redistribute it and/or modify
1019: * it under the terms of the GNU General Public License as published by
1020: * the Free Software Foundation; either version 2 of the License, or
1021: * (at your option) any later version.
1022: *
1023: * This program is distributed in the hope that it will be useful,
1024: * but WITHOUT ANY WARRANTY; without even the implied warranty of
1025: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1026: * GNU General Public License for more details.
1027: *
1028: * You should have received a copy of the GNU General Public License
1029: * along with this program; if not, write to the Free Software
1030: * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
1031: *
1032: */
1.271 moko 1033: static const char *base64_alphabet =
1.178 paf 1034: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
1035:
1036: /**
1037: * g_mime_utils_base64_encode_step:
1038: * @in: input stream
1039: * @inlen: length of the input
1040: * @out: output string
1041: * @state: holds the number of bits that are stored in @save
1042: * @save: leftover bits that have not yet been encoded
1043: *
1044: * Base64 encodes a chunk of data. Performs an 'encode step', only
1045: * encodes blocks of 3 characters to the output at a time, saves
1046: * left-over state in state and save (initialise to 0 on first
1047: * invocation).
1048: *
1049: * Returns the number of bytes encoded.
1050: **/
1.252 misha 1051:
1052: #define BASE64_GROUPS_IN_LINE 19
1053:
1.178 paf 1054: static size_t
1055: g_mime_utils_base64_encode_step (const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save)
1056: {
1.186 paf 1057: register const unsigned char *inptr;
1.178 paf 1058: register unsigned char *outptr;
1059:
1060: if (inlen <= 0)
1061: return 0;
1062:
1063: inptr = in;
1064: outptr = out;
1065:
1066: if (inlen + ((unsigned char *)save)[0] > 2) {
1067: const unsigned char *inend = in + inlen - 2;
1068: register int c1 = 0, c2 = 0, c3 = 0;
1069: register int already;
1070:
1071: already = *state;
1072:
1073: switch (((char *)save)[0]) {
1074: case 1: c1 = ((unsigned char *)save)[1]; goto skip1;
1075: case 2: c1 = ((unsigned char *)save)[1];
1076: c2 = ((unsigned char *)save)[2]; goto skip2;
1077: }
1078:
1079: /* yes, we jump into the loop, no i'm not going to change it, its beautiful! */
1080: while (inptr < inend) {
1081: c1 = *inptr++;
1082: skip1:
1083: c2 = *inptr++;
1084: skip2:
1085: c3 = *inptr++;
1086: *outptr++ = base64_alphabet [c1 >> 2];
1087: *outptr++ = base64_alphabet [(c2 >> 4) | ((c1 & 0x3) << 4)];
1088: *outptr++ = base64_alphabet [((c2 & 0x0f) << 2) | (c3 >> 6)];
1089: *outptr++ = base64_alphabet [c3 & 0x3f];
1090: /* this is a bit ugly ... */
1.252 misha 1091: if ((++already) >= BASE64_GROUPS_IN_LINE) {
1.178 paf 1092: *outptr++ = '\n';
1093: already = 0;
1094: }
1095: }
1096:
1097: ((unsigned char *)save)[0] = 0;
1098: inlen = 2 - (inptr - inend);
1099: *state = already;
1100: }
1101:
1102: //d(printf ("state = %d, inlen = %d\n", (int)((char *)save)[0], inlen));
1103:
1104: if (inlen > 0) {
1105: register char *saveout;
1106:
1107: /* points to the slot for the next char to save */
1108: saveout = & (((char *)save)[1]) + ((char *)save)[0];
1109:
1110: /* inlen can only be 0 1 or 2 */
1111: switch (inlen) {
1112: case 2: *saveout++ = *inptr++;
1113: case 1: *saveout++ = *inptr++;
1114: }
1.216 paf 1115: *(char *)save = *(char *)save+(char)inlen;
1.178 paf 1116: }
1117:
1118: /*d(printf ("mode = %d\nc1 = %c\nc2 = %c\n",
1119: (int)((char *)save)[0],
1120: (int)((char *)save)[1],
1121: (int)((char *)save)[2]));*/
1122:
1123: return (outptr - out);
1124: }
1125:
1126: /**
1127: * g_mime_utils_base64_encode_close:
1128: * @in: input stream
1129: * @inlen: length of the input
1130: * @out: output string
1131: * @state: holds the number of bits that are stored in @save
1132: * @save: leftover bits that have not yet been encoded
1133: *
1134: * Base64 encodes the input stream to the output stream. Call this
1135: * when finished encoding data with g_mime_utils_base64_encode_step to
1136: * flush off the last little bit.
1137: *
1138: * Returns the number of bytes encoded.
1139: **/
1140: static size_t
1141: g_mime_utils_base64_encode_close (const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save)
1142: {
1143: unsigned char *outptr = out;
1144: int c1, c2;
1145:
1146: if (inlen > 0)
1147: outptr += g_mime_utils_base64_encode_step (in, inlen, outptr, state, save);
1148:
1149: c1 = ((unsigned char *)save)[1];
1150: c2 = ((unsigned char *)save)[2];
1151:
1152: switch (((unsigned char *)save)[0]) {
1153: case 2:
1154: outptr[2] = base64_alphabet [(c2 & 0x0f) << 2];
1155: goto skip;
1156: case 1:
1157: outptr[2] = '=';
1158: skip:
1159: outptr[0] = base64_alphabet [c1 >> 2];
1160: outptr[1] = base64_alphabet [c2 >> 4 | ((c1 & 0x3) << 4)];
1161: outptr[3] = '=';
1162: outptr += 4;
1163: break;
1164: }
1165:
1166: *outptr++ = 0;
1167:
1168: *save = 0;
1169: *state = 0;
1170:
1171: return (outptr - out);
1172: }
1173:
1.210 paf 1174: static unsigned char gmime_base64_rank[256] = {
1.266 misha 1175: 255,255,255,255,255,255,255,255,255,254,254,255,255,254,255,255,
1.210 paf 1176: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1.266 misha 1177: 254,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63,
1.210 paf 1178: 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255,
1179: 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
1180: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255,
1181: 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1182: 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255,
1183: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1184: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1185: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1186: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1187: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1188: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1189: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1190: 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
1191: };
1192:
1193: /**
1194: * g_mime_utils_base64_decode_step:
1195: * @in: input stream
1196: * @inlen: max length of data to decode
1197: * @out: output stream
1198: * @state: holds the number of bits that are stored in @save
1199: * @save: leftover bits that have not yet been decoded
1.266 misha 1200: * @strict: only base64 and whitespace chars are allowed
1.210 paf 1201: *
1202: * Decodes a chunk of base64 encoded data.
1203: *
1204: * Returns the number of bytes decoded (which have been dumped in @out).
1205: **/
1206: size_t
1.266 misha 1207: g_mime_utils_base64_decode_step(const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save, bool strict=false)
1.210 paf 1208: {
1.213 paf 1209: const unsigned char *inptr;
1210: unsigned char *outptr;
1.210 paf 1211: const unsigned char *inend;
1.213 paf 1212: int saved;
1.210 paf 1213: unsigned char c;
1214: int i;
1215:
1216: inend = in + inlen;
1217: outptr = out;
1218:
1219: /* convert 4 base64 bytes to 3 normal bytes */
1220: saved = *save;
1221: i = *state;
1222: inptr = in;
1223: while (inptr < inend) {
1224: c = gmime_base64_rank[*inptr++];
1.266 misha 1225: switch(c) {
1226: case 0xff: // non-base64 and non-whitespace chars. not allowed in strict mode
1227: if(strict)
1228: throw Exception(BASE64_FORMAT, 0, "Invalid base64 char on position %d is detected", inptr-in-1);
1229: case 0xfe: // whitespace chars 0x09, 0x0A, 0x0D, 0x20 are allowed in any mode
1230: break;
1231: default:
1232: saved = (saved << 6) | c;
1233: i++;
1234: if (i == 4) {
1235: *outptr++ = (unsigned char)(saved >> 16);
1236: *outptr++ = (unsigned char)(saved >> 8);
1237: *outptr++ = (unsigned char)(saved);
1238: i = 0;
1239: }
1.210 paf 1240: }
1241: }
1242:
1243: *save = saved;
1244: *state = i;
1245:
1246: /* quick scan back for '=' on the end somewhere */
1247: /* fortunately we can drop 1 output char for each trailing = (upto 2) */
1248: i = 2;
1249: while (inptr > in && i) {
1250: inptr--;
1.266 misha 1251: if (gmime_base64_rank[*inptr] <= 0xfe) {
1.210 paf 1252: if (*inptr == '=' && outptr > out)
1253: outptr--;
1254: i--;
1255: }
1256: }
1257:
1258: /* if i != 0 then there is a truncation error! */
1259: return (outptr - out);
1260: }
1261:
1262:
1.239 misha 1263: char* pa_base64_encode(const char *in, size_t in_size){
1.252 misha 1264: size_t new_size = ((in_size / 3 + 1) * 4);
1265: new_size += new_size / (BASE64_GROUPS_IN_LINE * 4)/*new lines*/ + 1/*zero terminator*/;
1266: char* result = new(PointerFreeGC) char[new_size];
1.178 paf 1267: int state=0;
1268: int save=0;
1.183 paf 1269: #ifndef NDEBUG
1270: size_t filled=
1271: #endif
1.251 misha 1272: g_mime_utils_base64_encode_close ((const unsigned char*)in, in_size, (unsigned char*)result, &state, &save);
1273:
1274: //throw Exception(PARSER_RUNTIME, 0, "%d %d %d", in_size, new_size, filled);
1275: assert(filled <= new_size);
1.178 paf 1276:
1277: return result;
1.98 paf 1278: }
1.210 paf 1279:
1.222 misha 1280:
1.239 misha 1281: char* pa_base64_encode(const String& file_spec){
1.222 misha 1282: unsigned char* base64=0;
1283: File_base64_action_info info={&base64};
1284:
1285: file_read_action_under_lock(file_spec,
1286: "pa_base64_encode", file_base64_file_action, &info);
1287:
1288: return (char*)base64;
1289: }
1290:
1291:
1292: static void file_base64_file_action(
1.229 misha 1293: struct stat& finfo,
1294: int f,
1295: const String&, const char* /*fname*/, bool,
1296: void *context) {
1.222 misha 1297:
1298: if(finfo.st_size) {
1299: File_base64_action_info& info=*static_cast<File_base64_action_info *>(context);
1300: *info.base64=new(PointerFreeGC) unsigned char[finfo.st_size * 2 + 6];
1301: unsigned char* base64 = *info.base64;
1302: int state=0;
1303: int save=0;
1304: int nCount;
1305: do {
1306: unsigned char buffer[FILE_BUFFER_SIZE];
1307: nCount = file_block_read(f, buffer, sizeof(buffer));
1308: if( nCount ){
1309: size_t filled=g_mime_utils_base64_encode_step ((const unsigned char*)buffer, nCount, base64, &state, &save);
1310: base64+=filled;
1311: }
1312: } while(nCount > 0);
1313: g_mime_utils_base64_encode_close (0, 0, base64, &state, &save);
1314: }
1315: }
1316:
1.265 misha 1317: void pa_base64_decode(const char *in, size_t in_size, char*& result, size_t& result_size, bool strict) {
1.264 misha 1318: // every 4 base64 bytes are converted into 3 normal bytes
1319: // not full set (tail) of 4-bytes set is ignored
1320: size_t new_size=in_size/4*3;
1321: result=new(PointerFreeGC) char[new_size+1/*terminator*/];
1322:
1.210 paf 1323: int state=0;
1324: int save=0;
1325: result_size=
1.266 misha 1326: g_mime_utils_base64_decode_step ((const unsigned char*)in, in_size,
1327: (unsigned char*)result, &state, &save, strict);
1.264 misha 1328: assert(result_size <= new_size);
1.211 paf 1329: result[result_size]=0; // for text files
1.265 misha 1330:
1331: if(strict && state!=0)
1.266 misha 1332: throw Exception(BASE64_FORMAT, 0, "Unexpected end of chars");
1.210 paf 1333: }
1.218 misha 1334:
1335:
1.221 misha 1336: int file_block_read(const int f, unsigned char* buffer, const size_t size){
1337: int nCount = read(f, buffer, size);
1338: if (nCount < 0)
1.238 misha 1339: throw Exception("file.read",
1.221 misha 1340: 0,
1341: "read failed: %s (%d)", strerror(errno), errno);
1342: return nCount;
1343: }
1344:
1.239 misha 1345: const unsigned long pa_crc32(const char *in, size_t in_size){
1.218 misha 1346: unsigned long crc32=0xFFFFFFFF;
1.220 misha 1347:
1.240 misha 1348: InitCrc32Table();
1.239 misha 1349: for(size_t i = 0; i<in_size; i++)
1350: CalcCrc32(in[i], crc32);
1.220 misha 1351:
1.218 misha 1352: return ~crc32;
1353: }
1354:
1.239 misha 1355: const unsigned long pa_crc32(const String& file_spec){
1.218 misha 1356: unsigned long crc32=0xFFFFFFFF;
1357: file_read_action_under_lock(file_spec, "crc32", file_crc32_file_action, &crc32);
1358: return ~crc32;
1359: }
1360:
1361: static void file_crc32_file_action(
1.229 misha 1362: struct stat& finfo,
1363: int f,
1364: const String&, const char* /*fname*/, bool,
1.239 misha 1365: void *context) {
1.218 misha 1366: unsigned long& crc32=*static_cast<unsigned long *>(context);
1367: if(finfo.st_size) {
1368: InitCrc32Table();
1.220 misha 1369: int nCount=0;
1.218 misha 1370: do {
1.221 misha 1371: unsigned char buffer[FILE_BUFFER_SIZE];
1372: nCount = file_block_read(f, buffer, sizeof(buffer));
1.220 misha 1373: for(int i = 0; i < nCount; i++) CalcCrc32(buffer[i], crc32);
1374: } while(nCount > 0);
1.218 misha 1375: }
1376: }
1377:
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