Annotation of parser3/src/main/pa_common.C, revision 1.143.2.21.2.28
1.15 paf 1: /** @file
1.16 paf 2: Parser: commonly functions.
3:
1.143.2.10 paf 4: Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.101 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.111 paf 6: */
1.16 paf 7:
1.143.2.21.2. 8(paf 8:3): static const char* IDENT_COMMON_C="$Date: 2003/04/11 12:29:00 $";
1.1 paf 9:
10: #include "pa_common.h"
1.4 paf 11: #include "pa_exception.h"
1.126 paf 12: #include "pa_hash.h"
1.143.2.21.2. (paf 13:): #include "pa_globals.h"
5(paf 14:3): #include "pa_request_charsets.h"
15:3): #include "pa_charsets.h"
(paf 16:):
4(paf 17:3): #define PA_HTTP
(paf 18:):
19:): #ifdef PA_HTTP
1.143.2.3 paf 20: #include "pa_vstring.h"
1.143.2.4 paf 21: #include "pa_vint.h"
1.1 paf 22:
1.143.2.12 paf 23: #ifdef CYGWIN
24: #define _GNU_H_WINDOWS32_SOCKETS
25: // for PASCAL
26: #include <windows.h>
27: // SOCKET
28: typedef u_int SOCKET;
29: int PASCAL closesocket(SOCKET);
1.126 paf 30: #else
1.143.2.12 paf 31: # if defined(WIN32)
32: # include <windows.h>
33: # else
34: # define closesocket close
35: # endif
1.98 paf 36: #endif
37:
1.143.2.21.2. (paf 38:): #else
39:):
40:): # if defined(WIN32)
41:): # include <windows.h>
42:): # endif
43:):
44:): #endif
45:):
1.93 paf 46: // some maybe-undefined constants
47:
1.82 paf 48: #ifndef _O_TEXT
49: # define _O_TEXT 0
50: #endif
51: #ifndef _O_BINARY
52: # define _O_BINARY 0
1.47 paf 53: #endif
1.80 paf 54:
1.138 paf 55: #ifdef HAVE_FTRUNCATE
56: # define PA_O_TRUNC 0
57: #else
58: # ifdef _O_TRUNC
59: # define PA_O_TRUNC _O_TRUNC
60: # else
61: # error you must have either ftruncate function or _O_TRUNC bit declared
62: # endif
63: #endif
64:
1.93 paf 65: // locking constants
1.143.2.21.2. 9(paf 66:3): //#define PA_DEBUG_NO_LOCKING
67:3):
68:3): #ifdef PA_DEBUG_NO_LOCKING
69:3):
1.99 paf 70: #ifdef HAVE_FLOCK
71:
72: static int lock_shared_blocking(int fd) { return flock(fd, LOCK_SH); }
73: static int lock_exclusive_blocking(int fd) { return flock(fd, LOCK_EX); }
74: static int lock_exclusive_nonblocking(int fd) { return flock(fd, LOCK_EX || LOCK_NB); }
75: static int unlock(int fd) { return flock(fd, LOCK_UN); }
76:
1.98 paf 77: #else
1.99 paf 78: #ifdef HAVE__LOCKING
1.98 paf 79:
1.126 paf 80: #define FLOCK(operation) lseek(fd, 0, SEEK_SET); return _locking(fd, operation, 1)
1.99 paf 81: static int lock_shared_blocking(int fd) { FLOCK(_LK_LOCK); }
82: static int lock_exclusive_blocking(int fd) { FLOCK(_LK_LOCK); }
83: static int lock_exclusive_nonblocking(int fd) { FLOCK(_LK_NBLCK); }
84: static int unlock(int fd) { FLOCK(_LK_UNLCK); }
1.93 paf 85:
1.99 paf 86: #else
87: #ifdef HAVE_FCNTL
1.93 paf 88:
1.126 paf 89: #define FLOCK(cmd, arg) struct flock ls={arg, SEEK_SET}; return fcntl(fd, cmd, &ls)
1.99 paf 90: static int lock_shared_blocking(int fd) { FLOCK(F_SETLKW, F_RDLCK); }
91: static int lock_exclusive_blocking(int fd) { FLOCK(F_SETLKW, F_WRLCK); }
92: static int lock_exclusive_nonblocking(int fd) { FLOCK(F_SETLK, F_RDLCK); }
93: static int unlock(int fd) { FLOCK(F_SETLK, F_UNLCK); }
1.93 paf 94:
95: #else
96: #ifdef HAVE_LOCKF
1.99 paf 97:
1.126 paf 98: #define FLOCK(fd, operation) lseek(fd, 0, SEEK_SET); return lockf(fd, operation, 1)
1.99 paf 99: static int lock_shared_blocking(int fd) { FLOCK(F_LOCK); } // on intel solaris man doesn't have doc on shared blocking
100: static int lock_exclusive_blocking(int fd) { FLOCK(F_LOCK); }
101: static int lock_exclusive_nonblocking(int fd) { FLOCK(F_TLOCK); }
102: static int unlock(int fd) { FLOCK(F_TLOCK); }
103:
1.93 paf 104: #else
1.99 paf 105:
106: #error unable to find file locking func
107:
108: #endif
1.93 paf 109: #endif
110: #endif
111: #endif
112:
1.143.2.21.2. 6(paf 113:3): #else
114:3): static int lock_shared_blocking(int fd) { return 0; }
115:3): static int lock_exclusive_blocking(int fd) { return 0; }
116:3): static int lock_exclusive_nonblocking(int fd) { return 0; }
117:3): static int unlock(int fd) { return 0; }
118:3):
119:3): #endif
120:3):
1.143.2.16 paf 121: // defines for globals
122:
123: #define FILE_STATUS_NAME "status"
124:
125: // globals
126:
1.143.2.21.2. (paf 127:): const String file_status_name(FILE_STATUS_NAME);
1.143.2.16 paf 128:
1.143.2.14 paf 129: // defines for statics
130:
131: #define HTTP_METHOD_NAME "method"
132: #define HTTP_TIMEOUT_NAME "timeout"
133: #define HTTP_HEADERS_NAME "headers"
134: #define HTTP_ANY_STATUS_NAME "any-status"
1.143.2.21.2. 5(paf 135:3): #define HTTP_CHARSET_NAME "charset"
1.143.2.14 paf 136:
137: // statics
138:
1.143.2.21.2. (paf 139:): static const String http_method_name(HTTP_METHOD_NAME);
140:): static const String http_timeout_name(HTTP_TIMEOUT_NAME);
141:): static const String http_headers_name(HTTP_HEADERS_NAME);
142:): static const String http_any_status_name(HTTP_ANY_STATUS_NAME);
5(paf 143:3): static const String http_charset_name(HTTP_CHARSET_NAME);
1.143.2.14 paf 144:
145: // defines
146:
1.127 paf 147: #define DEFAULT_USER_AGENT "parser3"
148:
1.143.2.14 paf 149: // functions
1.127 paf 150:
1.143.2.21.2. 0(paf 151:3): void fix_line_breaks(char *str, size_t& length) {
1.87 paf 152: //_asm int 3;
1.143.2.21.2. 0(paf 153:3): const char* const eob=str+length;
154:3): char* dest=str;
1.72 parser 155: // fix DOS: \r\n -> \n
156: // fix Macintosh: \r -> \n
1.143.2.21.2. 0(paf 157:3): char* bol=str;
1.137 paf 158: while(char* eol=(char*)memchr(bol, '\r', eob -bol)) {
1.72 parser 159: size_t len=eol-bol;
160: if(dest!=bol)
1.126 paf 161: memcpy(dest, bol, len);
1.72 parser 162: dest+=len;
1.126 paf 163: *dest++='\n';
1.72 parser 164:
1.126 paf 165: if(&eol[1]<eob && eol[1]=='\n') { // \r, \n = DOS
1.72 parser 166: bol=eol+2;
1.143.2.21.2. 0(paf 167:3): length--;
1.126 paf 168: } else // \r, not \n = Macintosh
1.72 parser 169: bol=eol+1;
170: }
1.143.2.21.2. 8(paf 171:3): // last piece without \r
1.72 parser 172: if(dest!=bol)
1.126 paf 173: memcpy(dest, bol, eob-bol);
1.143.2.21.2. 8(paf 174:3): str[length]=0; // terminating
1.72 parser 175: }
1.18 paf 176:
1.143.2.21.2. 5(paf 177:3): char* file_read_text(Request_charsets& charsets,
178:3): const String& file_spec,
179:3): bool fail_on_read_problem,
180:3): HashStringValue* params/*, HashStringValue* * out_fields*/) {
1.143.2.18 paf 181: File_read_result file=
1.143.2.21.2. 5(paf 182:3): file_read(charsets, file_spec, true, params, fail_on_read_problem);
(paf 183:): return file.success?file.str:0;
1.126 paf 184: }
185:
1.143.2.21.2. (paf 186:): #ifdef PA_HTTP
1.126 paf 187: //http request stuff
188:
189: static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){
190: memset(addr, 0, sizeof(*addr));
191: addr->sin_family=AF_INET;
192: addr->sin_port=htons(port);
193: if(host) {
194: if(struct hostent *hostIP=gethostbyname(host))
195: memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length);
196: else
197: return false;
198: } else
199: addr->sin_addr.s_addr=INADDR_ANY;
200: return true;
201: }
202:
1.143.2.21.2. 4(paf 203:3): static int http_read_response(String& response, int sock, bool fail_on_status_ne_200){
1.143.2.2 paf 204: int result=0;
1.143.2.21.2. 2(paf 205:3): size_t EOLat=0;
1.126 paf 206: while(true) {
1.143.2.21.2. (paf 207:): char *buf=new(PointerFreeGC) char[MAX_STRING];
1.126 paf 208: ssize_t size=recv(sock, buf, MAX_STRING, 0);
209: if(size<=0)
210: break;
1.143.2.21.2. 7(paf 211:3): response.append_strdup(buf, size, String::L_TAINTED);
2(paf 212:3): if(!result && (EOLat=response.pos("\r\n", 2))!=STRING_NOT_FOUND) { // checking status in first response
(paf 213:): const String& status_line=response.mid(0, (size_t)EOLat);
1.143.2.15 paf 214: ArrayString astatus;
1.143.2.21.2. 4(paf 215:3): size_t pos_after=0;
216:3): status_line.split(astatus, pos_after, " ");
217:3): const String& status_code=*astatus.get(1);
218:3): result=status_code.as_int();
1.142 paf 219:
1.143.2.3 paf 220: if(fail_on_status_ne_200 && result!=200)
1.142 paf 221: throw Exception("http.status",
1.143.2.21.2. 4(paf 222:3): &status_code,
1.142 paf 223: "invalid HTTP response status");
224: }
225: }
1.143.2.2 paf 226: if(result)
227: return result;
1.142 paf 228: else
229: throw Exception("http.response",
1.143.2.21.2. (paf 230:): 0,
231:): "bad response from host - no status found (size=%lu)", response.length());
1.126 paf 232: }
233:
234: /* ********************** request *************************** */
235:
236: #if defined(SIGALRM) && defined(HAVE_SIGSETJMP) && defined(HAVE_SIGLONGJMP)
1.143.2.21.2. 4(paf 237:3): # define PA_USE_ALARM
1.126 paf 238: #endif
239:
1.143.2.21.2. 4(paf 240:3): #ifdef PA_USE_ALARM
1.126 paf 241: static sigjmp_buf timeout_env;
242: static void timeout_handler(int sig){
243: siglongjmp(timeout_env, 1);
244: }
245: #endif
246:
1.143.2.21.2. 4(paf 247:3): static int http_request(String& response,
248:3): const char* host, int port,
249:3): const char* request,
250:3): int timeout,
251:3): bool fail_on_status_ne_200) {
1.126 paf 252: if(!host)
253: throw Exception("http.host",
1.143.2.21.2. 4(paf 254:3): 0,
1.126 paf 255: "zero hostname"); //never
256:
1.143.2.21.2. 4(paf 257:3): #ifdef PA_USE_ALARM
258:3): signal(SIGALRM, timeout_handler);
1.126 paf 259: #endif
260: int sock=-1;
1.143.2.21.2. 4(paf 261:3): #ifdef PA_USE_ALARM
262:3): if(sigsetjmp(timeout_env, 1)) {
263:3): // stupid gcc [2.95.4] generated bad code
264:3): // which failed to handle sigsetjmp+throw: crashed inside of pre-throw code.
265:3): // rewritten simplier [though duplicating closesocket code]
266:3): if(sock>=0)
267:3): closesocket(sock);
268:3): throw Exception("http.timeout",
269:3): origin_string,
270:3): "timeout occured while retrieving document");
271:3): return 0; // never
272:3): } else {
273:3): alarm(timeout);
1.126 paf 274: #endif
1.143.2.21.2. 4(paf 275:3): try {
276:3): int result;
1.126 paf 277: struct sockaddr_in dest;
278:
1.143.2.21.2. 4(paf 279:3): if(!set_addr(&dest, host, port))
1.126 paf 280: throw Exception("http.host",
1.143.2.21.2. 4(paf 281:3): 0,
1.127 paf 282: "can not resolve hostname \"%s\"", host);
1.126 paf 283:
284: if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0)
285: throw Exception("http.connect",
1.143.2.21.2. 4(paf 286:3): 0,
1.127 paf 287: "can not make socket: %s (%d)", strerror(errno), errno);
1.126 paf 288: if(connect(sock, (struct sockaddr *)&dest, sizeof(dest)))
289: throw Exception("http.connect",
1.143.2.21.2. 4(paf 290:3): 0,
1.127 paf 291: "can not connect to host \"%s\": %s (%d)", host, strerror(errno), errno);
1.126 paf 292: size_t request_size=strlen(request);
293: if(send(sock, request, request_size, 0)!=(ssize_t)request_size)
294: throw Exception("http.connect",
1.143.2.21.2. 4(paf 295:3): 0,
1.127 paf 296: "error sending request: %s (%d)", strerror(errno), errno);
1.126 paf 297:
1.143.2.21.2. (paf 298:): result=http_read_response(response, sock, fail_on_status_ne_200);
1.142 paf 299: closesocket(sock);
1.143.2.21.2. 4(paf 300:3): #ifdef PA_USE_ALARM
1.142 paf 301: alarm(0);
1.126 paf 302: #endif
1.143.2.21.2. 4(paf 303:3): return result;
304:3): } catch(...) {
305:3): #ifdef PA_USE_ALARM
306:3): alarm(0);
1.126 paf 307: #endif
1.143.2.21.2. 4(paf 308:3): if(sock>=0)
309:3): closesocket(sock);
310:3): rethrow;
311:3): }
312:3): #ifdef PA_USE_ALARM
1.126 paf 313: }
1.143.2.21.2. 4(paf 314:3): #endif
1.126 paf 315: }
316:
1.127 paf 317: #ifndef DOXYGEN
318: struct Http_pass_header_info {
1.143.2.21.2. 5(paf 319:3): Request_charsets* charsets;
1.127 paf 320: String* request;
321: bool user_agent_specified;
322: };
323: #endif
1.143.2.21.2. 5(paf 324:3): static void http_pass_header(HashStringValue::key_type key,
325:3): HashStringValue::value_type value,
4(paf 326:3): Http_pass_header_info *info) {
327:3): *info->request <<key<<": "
5(paf 328:3): << attributed_meaning_to_string(*value, String::L_HTTP_HEADER, false)
329:3): << "\n";
1.135 paf 330:
1.143.2.21.2. 5(paf 331:3): if(String(key, String::L_TAINTED).change_case(info->charsets->source(), String::CC_UPPER)=="USER-AGENT")
332:3): info->user_agent_specified=true;
1.126 paf 333: }
1.143.2.21.2. 5(paf 334:3):
335:3):
336:3): static Charset* detect_charset(Charset& source_charset, const String& content_type_value) {
337:3): const StringBody CONTENT_TYPE_VALUE=
338:3): content_type_value.change_case(source_charset, String::CC_UPPER);
339:3): // content-type: xxx/xxx; source_charset=WE-NEED-THIS
340:3): // content-type: xxx/xxx; source_charset="WE-NEED-THIS"
341:3): // content-type: xxx/xxx; source_charset="WE-NEED-THIS";
342:3): size_t before_charseteq_pos=CONTENT_TYPE_VALUE.pos("CHARSET=");
343:3): if(before_charseteq_pos!=STRING_NOT_FOUND) {
344:3): size_t charset_begin=before_charseteq_pos+8/*CHARSET="*/;
345:3): size_t open_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin);
346:3): bool quoted=open_quote_pos==charset_begin;
347:3): if(quoted)
348:3): charset_begin++; // skip opening '"'
6(paf 349:3): size_t charset_end=CONTENT_TYPE_VALUE.length();
5(paf 350:3): if(quoted) {
351:3): size_t close_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin);
352:3): if(close_quote_pos!=STRING_NOT_FOUND)
353:3): charset_end=close_quote_pos;
354:3): } else {
355:3): size_t delim_pos=CONTENT_TYPE_VALUE.pos(';', charset_begin);
356:3): if(delim_pos!=STRING_NOT_FOUND)
357:3): charset_end=delim_pos;
358:3): }
359:3): const StringBody CHARSET_NAME_BODY=
360:3): CONTENT_TYPE_VALUE.mid(charset_begin, charset_end);
361:3):
362:3): return &charsets.get(CHARSET_NAME_BODY);
363:3): }
364:3):
365:3): return 0;
366:3): }
367:3):
368:3):
1.143.2.16 paf 369: #ifndef DOXYGEN
1.143.2.21 paf 370: struct File_read_http_result {
1.143.2.21.2. 4(paf 371:3): char *str; size_t length;
(paf 372:): HashStringValue* headers;
1.143.2.16 paf 373: };
374: #endif
1.143.2.21.2. 5(paf 375:3): static File_read_http_result file_read_http(Request_charsets& charsets,
376:3): const String& file_spec,
4(paf 377:3): HashStringValue *options=0) {
1.143.2.21 paf 378: File_read_http_result result;
1.126 paf 379: char host[MAX_STRING];
1.129 paf 380: const char* uri;
1.126 paf 381: int port;
1.143.2.21.2. 4(paf 382:3): const char* method=0;
1.126 paf 383: int timeout=2;
1.142 paf 384: bool fail_on_status_ne_200=true;
1.143.2.21.2. 4(paf 385:3): Value* vheaders=0;
5(paf 386:3): Charset *asked_remote_charset=0;
1.126 paf 387:
1.127 paf 388: if(options) {
389: int valid_options=0;
1.143.2.21.2. (paf 390:): if(Value* vmethod=options->get(http_method_name)) {
1.127 paf 391: valid_options++;
1.143.2.21.2. (paf 392:): method=vmethod->as_string().cstr();
1.127 paf 393: }
1.143.2.21.2. (paf 394:): if(Value* vtimeout=options->get(http_timeout_name)) {
1.127 paf 395: valid_options++;
396: timeout=vtimeout->as_int();
397: }
1.143.2.3 paf 398: if(vheaders=options->get(http_headers_name)) {
1.127 paf 399: valid_options++;
400: }
1.143.2.21.2. (paf 401:): if(Value* vany_status=options->get(http_any_status_name)) {
1.142 paf 402: valid_options++;
403: fail_on_status_ne_200=!vany_status->as_bool();
404: }
1.143.2.21.2. 5(paf 405:3): if(Value* vcharset_name=options->get(http_charset_name)) {
406:3): valid_options++;
407:3): asked_remote_charset=&::charsets.get(vcharset_name->as_string().
408:3): change_case(charsets.source(), String::CC_UPPER));
409:3): }
1.142 paf 410:
1.143.2.3 paf 411: if(valid_options!=options->count())
1.127 paf 412: throw Exception("parser.runtime",
1.143.2.21.2. (paf 413:): 0,
1.127 paf 414: "invalid option passed");
1.143.2.21.2. 5(paf 415:3): }
416:3): if(!asked_remote_charset) // defaulting to $request:charset
417:3): asked_remote_charset=&charsets.source();
1.126 paf 418:
1.143.2.21.2. 6(paf 419:3): //preparing request
420:3): String& connect_string=*new String;
421:3): // not in ^sql{... L_SQL ...} spirit, but closer to ^file::load one
422:3): connect_string.append(file_spec, String::L_URI); // tainted pieces -> URI pieces
423:3):
5(paf 424:3): const char* request_cstr;
425:3): {
426:3): // influence URLencoding of tainted pieces to String::L_URI lang
427:3): Temp_client_charset temp(charsets, *asked_remote_charset);
428:3):
6(paf 429:3): const char* connect_string_cstr=connect_string.cstr(String::L_UNSPECIFIED);
430:3):
431:3): const char* current=connect_string_cstr;
432:3): if(strncmp(current, "http://", 7)!=0)
433:3): throw Exception(0,
434:3): &connect_string,
435:3): "does not start with http://"); //never
436:3): current+=7;
437:3):
438:3): strncpy(host, current, sizeof(host)-1); host[sizeof(host)-1]=0;
439:3): char* host_uri=lsplit(host, '/');
440:3): uri=host_uri?current+(host_uri-1-host):"/";
441:3): char* port_cstr=lsplit(host, ':');
442:3): char* error_pos=0;
443:3): port=port_cstr?strtol(port_cstr, &error_pos, 0):80;
444:3):
445:3):
446:3): //making request
447:3): String request;
448:3): if(method)
449:3): request<<method;
450:3): else
451:3): request<<"GET";
452:3): request<< " "<< uri <<" HTTP/1.0\n"
453:3): "host: "<< host <<"\n";
454:3): bool user_agent_specified=false;
455:3): if(vheaders && !vheaders->is_string()) { // allow empty
456:3): if(HashStringValue *headers=vheaders->get_hash()) {
457:3): Http_pass_header_info info={&charsets, &request};
458:3): headers->for_each(http_pass_header, &info);
459:3): user_agent_specified=info.user_agent_specified;
460:3): } else
461:3): throw Exception("parser.runtime",
462:3): &connect_string,
463:3): "headers param must be hash");
464:3): };
465:3): if(!user_agent_specified) // defaulting
466:3): request << "user-agent: " DEFAULT_USER_AGENT "\n";
467:3): request<<"\n";
5(paf 468:3):
6(paf 469:3): request_cstr=request.cstr(String::L_UNSPECIFIED);
5(paf 470:3): }
6(paf 471:3): // recode those pieces which are not in String::L_URI lang
472:3): // [those violating HTTP standard, but widly used]
473:3): request_cstr=Charset::transcode(
474:3): String::C(request_cstr, strlen(request_cstr)),
475:3): charsets.source(),
476:3): *asked_remote_charset);
477:3):
478:3): //sending request
479:3): String response;
(paf 480:): int status_code=http_request(response,
4(paf 481:3): host, port, request_cstr,
1.142 paf 482: timeout, fail_on_status_ne_200);
1.126 paf 483:
484: //processing results
1.143.2.21.2. 2(paf 485:3): size_t pos=response.pos("\r\n\r\n", 4);
5(paf 486:3): if(pos==STRING_NOT_FOUND || pos<1) {
1.126 paf 487: throw Exception("http.response",
1.143.2.21.2. 4(paf 488:3): &connect_string,
1.126 paf 489: "bad response from host - no headers found");
490: }
1.143.2.21.2. (paf 491:): const String& header_block=response.mid(0, pos);
5(paf 492:3): const String& raw_body=response.mid(pos+4, response.length());
1.126 paf 493:
1.143.2.15 paf 494: ArrayString aheaders;
1.143.2.21.2. 4(paf 495:3): result.headers=new HashStringValue;
496:3): size_t pos_after=0;
497:3): header_block.split(aheaders, pos_after, "\r\n");
1.126 paf 498:
499: //processing headers
1.143.2.21.2. 6(paf 500:3): size_t aheaders_count=aheaders.count();
5(paf 501:3): Charset* real_remote_charset=0; // undetected, yet
6(paf 502:3): for(size_t i=1; i<aheaders_count; i++) {
4(paf 503:3): const String& line=*aheaders.get(i);
504:3): pos=line.pos(": ", 2);
2(paf 505:3): if(pos==STRING_NOT_FOUND || pos<1)
1.126 paf 506: throw Exception("http.response",
1.143.2.21.2. 4(paf 507:3): &connect_string,
508:3): "bad response from host - bad header \"%s\"", line.cstr());
5(paf 509:3): const StringBody HEADER_NAME=
510:3): line.mid(0, pos).change_case(charsets.source(), String::CC_UPPER);
511:3): const String& header_value=line.mid(pos+2, line.length());
6(paf 512:3): if(HEADER_NAME=="CONTENT-TYPE")
5(paf 513:3): real_remote_charset=detect_charset(charsets.source(), header_value);
514:3): result.headers->put(HEADER_NAME, new VString(header_value));
1.126 paf 515: }
1.143.2.21.2. 5(paf 516:3): // defaulting to used-asked charset [it's never empty!]
517:3): if(!real_remote_charset)
518:3): real_remote_charset=asked_remote_charset;
1.126 paf 519:
520: // output response
1.143.2.21.2. 5(paf 521:3): String::C real_body=Charset::transcode(
522:3): String::C(raw_body.cstrm()/*must be modifiable*/, raw_body.length()),
523:3): *real_remote_charset,
524:3): charsets.source());
525:3):
526:3): result.str=const_cast<char *>(real_body.str); // hacking a little
527:3): result.length=real_body.length;
4(paf 528:3): result.headers->put(file_status_name, new VInt(status_code));
1.143.2.16 paf 529: return result;
1.34 paf 530: }
1.123 paf 531:
1.143.2.21.2. (paf 532:): #endif
533:):
1.123 paf 534: #ifndef DOXYGEN
535: struct File_read_action_info {
1.143.2.4 paf 536: char **data; size_t *data_size;
1.126 paf 537: };
1.123 paf 538: #endif
1.143.2.21.2. (paf 539:): static void file_read_action(
6(paf 540:3): struct stat& finfo,
541:3): int f,
542:3): const String& file_spec, const char* fname, bool as_text,
543:3): void *context) {
1.126 paf 544: File_read_action_info& info=*static_cast<File_read_action_info *>(context);
1.123 paf 545: if(size_t to_read_size=(size_t)finfo.st_size) {
1.143.2.21.2. (paf 546:): *info.data=new(PointerFreeGC) char[to_read_size+(as_text?1:0)];
1.126 paf 547: *info.data_size=(size_t)read(f, *info.data, to_read_size);
1.123 paf 548:
549: if(ssize_t(*info.data_size)<0 || *info.data_size>to_read_size)
1.126 paf 550: throw Exception(0,
1.143.2.21.2. (paf 551:): &file_spec,
1.123 paf 552: "read failed: actually read %lu bytes count not in [0..%lu] valid range",
1.126 paf 553: *info.data_size, to_read_size);
1.123 paf 554: } else { // empty file
555: if(as_text) {
1.143.2.21.2. (paf 556:): *info.data=new(PointerFreeGC) char[1];
1.123 paf 557: *(char*)(*info.data)=0;
558: } else
559: *info.data=0;
560: *info.data_size=0;
561: return;
562: }
1.126 paf 563: }
1.143.2.21.2. 5(paf 564:3): File_read_result file_read(Request_charsets& charsets, const String& file_spec,
1.143.2.16 paf 565: bool as_text, HashStringValue *params,
1.126 paf 566: bool fail_on_read_problem) {
1.143.2.21.2. 1(paf 567:3): File_read_result result={false};
(paf 568:): #ifdef PA_HTTP
4(paf 569:3): if(file_spec.starts_with("http://")) {
1.126 paf 570: // fail on read problem
1.143.2.21.2. 5(paf 571:3): File_read_http_result http=file_read_http(charsets, file_spec, params);
1.143.2.4 paf 572: result.success=true;
1.143.2.21.2. 1(paf 573:3): result.str=http.str;
574:3): result.length=http.length;
2(paf 575:3): result.headers=http.headers;
1.126 paf 576: } else {
1.143.2.21.2. (paf 577:): #endif
578:): File_read_action_info info={&result.str, &result.length};
579:): result.success=file_read_action_under_lock(file_spec,
1.126 paf 580: "read", file_read_action, &info,
581: as_text, fail_on_read_problem);
1.143.2.21.2. (paf 582:): #ifdef PA_HTTP
1.126 paf 583: }
1.143.2.21.2. (paf 584:): #endif
1.123 paf 585:
1.143.2.4 paf 586: if(result.success && as_text) {
1.131 paf 587: // UTF-8 signature: EF BB BF
1.143.2.21.2. (paf 588:): if(result.length>=3) {
589:): char *in=(char *)result.str;
2(paf 590:3): if(strncmp(in, "\xEB\xBB\xBF", 3)==0) {
(paf 591:): result.str=in+3; result.length-=3;// skip prefix
1.131 paf 592: }
593: }
594:
1.143.2.21.2. (paf 595:): fix_line_breaks((char *)(result.str), result.length);
1.123 paf 596: // note: after fixing
1.143.2.21.2. (paf 597:): ((char*&)(result.str))[result.length]=0;
1.123 paf 598: }
1.126 paf 599:
600: return result;
1.123 paf 601: }
602:
1.143.2.21.2. 3(paf 603:3): #ifdef PA_SAFE_MODE
7(paf 604:3): void check_safe_mode(struct stat finfo, const String& file_spec, const char* fname) {
3(paf 605:3): if(finfo.st_uid/*foreign?*/!=geteuid()
606:3): && finfo.st_gid/*foreign?*/!=getegid())
607:3): throw Exception("parser.runtime",
608:3): &file_spec,
609:3): "parser is in safe mode: "
610:3): "reading files of foreign group and user disabled "
611:3): "[recompile parser with --disable-safe-mode configure option], "
612:3): "actual filename '%s', "
613:3): "fuid(%d)!=euid(%d) or fgid(%d)!=egid(%d)",
614:3): fname,
615:3): finfo.st_uid, geteuid(),
616:3): finfo.st_gid, getegid());
617:3): }
618:3): #endif
619:3):
(paf 620:): bool file_read_action_under_lock(const String& file_spec,
1.126 paf 621: const char* action_name, File_read_action action, void *context,
622: bool as_text,
1.123 paf 623: bool fail_on_read_problem) {
1.143.2.21.2. (paf 624:): const char* fname=file_spec.cstr(String::L_FILE_SPEC);
1.33 paf 625: int f;
626:
627: // first open, next stat:
1.45 paf 628: // directory update of NTFS hard links performed on open.
1.33 paf 629: // ex:
630: // a.html:^test[] and b.html hardlink to a.html
631: // user inserts ! before ^test in a.html
1.126 paf 632: // directory entry of b.html in NTFS not updated at once,
1.35 paf 633: // they delay update till open, so we would receive "!^test[" string
634: // if would do stat, next open.
1.123 paf 635: // later: it seems, even this does not help sometimes
1.98 paf 636: if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) {
1.123 paf 637: try {
638: if(lock_shared_blocking(f)!=0)
1.126 paf 639: throw Exception("file.lock",
1.143.2.21.2. (paf 640:): &file_spec,
1.123 paf 641: "shared lock failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 642:): strerror(errno), errno, fname);
1.123 paf 643:
1.124 paf 644: struct stat finfo;
645: if(stat(fname, &finfo)!=0)
646: throw Exception("file.missing", // hardly possible: we just opened it OK
1.143.2.21.2. (paf 647:): &file_spec,
1.124 paf 648: "stat failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 649:): strerror(errno), errno, fname);
1.124 paf 650:
1.140 paf 651: #ifdef PA_SAFE_MODE
1.143.2.21.2. 3(paf 652:3): check_safe_mode(finfo, file_spec, fname);
1.105 paf 653: #endif
1.32 paf 654:
1.143.2.21.2. (paf 655:): action(finfo, f, file_spec, fname, as_text, context);
1.123 paf 656: } catch(...) {
1.126 paf 657: unlock(f);close(f);
1.123 paf 658: if(fail_on_read_problem)
1.143.2.11 paf 659: rethrow;
1.123 paf 660: return false;
661: }
1.87 paf 662:
1.126 paf 663: unlock(f);close(f);
1.72 parser 664: return true;
1.118 paf 665: } else {
666: if(fail_on_read_problem)
1.126 paf 667: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
1.143.2.21.2. (paf 668:): &file_spec,
1.123 paf 669: "%s failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 670:): action_name, strerror(errno), errno, fname);
1.118 paf 671: return false;
672: }
1.8 paf 673: }
674:
1.143.2.21.2. (paf 675:): static void create_dir_for_file(const String& file_spec) {
1.63 parser 676: size_t pos_after=1;
1.143.2.21.2. 2(paf 677:3): size_t pos_before;
3(paf 678:3): while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) {
(paf 679:): mkdir(file_spec.mid(0, pos_before).cstr(String::L_FILE_SPEC), 0775);
1.63 parser 680: pos_after=pos_before+1;
681: }
682: }
683:
1.98 paf 684: bool file_write_action_under_lock(
1.143.2.21.2. (paf 685:): const String& file_spec,
1.126 paf 686: const char* action_name, File_write_action action, void *context,
687: bool as_text,
688: bool do_append,
689: bool do_block,
1.110 paf 690: bool fail_on_lock_problem) {
1.143.2.21.2. (paf 691:): const char* fname=file_spec.cstr(String::L_FILE_SPEC);
1.28 paf 692: int f;
1.80 paf 693: if(access(fname, W_OK)!=0) // no
1.126 paf 694: create_dir_for_file(file_spec);
1.50 paf 695:
1.80 paf 696: if((f=open(fname,
697: O_CREAT|O_RDWR
698: |(as_text?_O_TEXT:_O_BINARY)
1.138 paf 699: |(do_append?O_APPEND:PA_O_TRUNC), 0664))>=0) {
1.99 paf 700: if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) {
1.126 paf 701: Exception e("file.lock",
1.143.2.21.2. (paf 702:): &file_spec,
1.110 paf 703: "shared lock failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 704:): strerror(errno), errno, fname);
1.126 paf 705: close(f);
1.110 paf 706: if(fail_on_lock_problem)
707: throw e;
1.98 paf 708: return false;
709: }
1.96 paf 710:
711: try {
1.126 paf 712: action(f, context);
1.96 paf 713: } catch(...) {
1.138 paf 714: #ifdef HAVE_FTRUNCATE
1.104 paf 715: if(!do_append)
1.125 paf 716: ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower
1.138 paf 717: #endif
1.126 paf 718: unlock(f);close(f);
1.143.2.11 paf 719: rethrow;
1.96 paf 720: }
1.80 paf 721:
1.138 paf 722: #ifdef HAVE_FTRUNCATE
1.104 paf 723: if(!do_append)
1.125 paf 724: 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 725: #endif
1.126 paf 726: unlock(f);close(f);
1.98 paf 727: return true;
1.80 paf 728: } else
1.126 paf 729: throw Exception(errno==EACCES?"file.access":0,
1.143.2.21.2. (paf 730:): &file_spec,
1.96 paf 731: "%s failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 732:): action_name, strerror(errno), errno, fname);
1.96 paf 733: // here should be nothing, see rethrow above
734: }
735:
736: #ifndef DOXYGEN
737: struct File_write_action_info {
1.143.2.21.2. (paf 738:): const char* str; size_t length;
1.126 paf 739: };
1.96 paf 740: #endif
741: static void file_write_action(int f, void *context) {
1.126 paf 742: File_write_action_info& info=*static_cast<File_write_action_info *>(context);
1.143.2.21.2. (paf 743:): if(info.length) {
744:): int written=write(f, info.str, info.length);
1.116 paf 745: if(written<0)
1.126 paf 746: throw Exception(0,
1.143.2.21.2. (paf 747:): 0,
1.126 paf 748: "write failed: %s (%d)", strerror(errno), errno);
1.113 paf 749: }
1.96 paf 750: }
751: void file_write(
1.143.2.21.2. (paf 752:): const String& file_spec,
753:): const char* data, size_t size,
1.126 paf 754: bool as_text,
1.96 paf 755: bool do_append) {
1.126 paf 756: File_write_action_info info={data, size};
1.98 paf 757: file_write_action_under_lock(
1.143.2.4 paf 758: file_spec,
759: "write", file_write_action, &info,
760: as_text,
761: do_append);
1.30 paf 762: }
763:
1.63 parser 764: // throws nothing! [this is required in file_move & file_delete]
1.143.2.21.2. (paf 765:): static void rmdir(const String& file_spec, size_t pos_after) {
2(paf 766:3): size_t pos_before;
3(paf 767:3): if((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND)
1.126 paf 768: rmdir(file_spec, pos_before+1);
1.50 paf 769:
1.143.2.21.2. (paf 770:): rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::L_FILE_SPEC));
1.50 paf 771: }
1.143.2.21.2. (paf 772:): bool file_delete(const String& file_spec, bool fail_on_read_problem) {
773:): const char* fname=file_spec.cstr(String::L_FILE_SPEC);
1.54 parser 774: if(unlink(fname)!=0)
1.93 paf 775: if(fail_on_read_problem)
1.126 paf 776: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
1.143.2.21.2. (paf 777:): &file_spec,
1.93 paf 778: "unlink failed: %s (%d), actual filename '%s'",
1.143.2.21.2. (paf 779:): strerror(errno), errno, fname);
1.93 paf 780: else
781: return false;
1.50 paf 782:
1.126 paf 783: rmdir(file_spec, 1);
1.93 paf 784: return true;
1.60 parser 785: }
1.143.2.21.2. (paf 786:): void file_move(const String& old_spec, const String& new_spec) {
787:): const char* old_spec_cstr=old_spec.cstr(String::L_FILE_SPEC);
788:): const char* new_spec_cstr=new_spec.cstr(String::L_FILE_SPEC);
1.63 parser 789:
1.126 paf 790: create_dir_for_file(new_spec);
1.63 parser 791:
1.60 parser 792: if(rename(old_spec_cstr, new_spec_cstr)!=0)
1.126 paf 793: throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0,
1.143.2.21.2. (paf 794:): &old_spec,
1.60 parser 795: "rename failed: %s (%d), actual filename '%s' to '%s'",
1.143.2.21.2. (paf 796:): strerror(errno), errno, old_spec_cstr, new_spec_cstr);
1.63 parser 797:
1.126 paf 798: rmdir(old_spec, 1);
1.31 paf 799: }
800:
1.51 paf 801:
1.126 paf 802: bool entry_exists(const char* fname, struct stat *afinfo) {
1.118 paf 803: struct stat lfinfo;
804: bool result=stat(fname, &lfinfo)==0;
805: if(afinfo)
806: *afinfo=lfinfo;
807: return result;
1.119 paf 808: }
809:
1.143.2.21.2. (paf 810:): bool entry_exists(const String& file_spec) {
811:): const char* fname=file_spec.cstr(String::L_FILE_SPEC);
1.126 paf 812: return entry_exists(fname, 0);
1.118 paf 813: }
814:
1.143.2.21.2. (paf 815:): static bool entry_readable(const String& file_spec, bool need_dir) {
816:): char* fname=file_spec.cstrm(String::L_FILE_SPEC);
1.120 paf 817: if(need_dir) {
1.126 paf 818: size_t size=strlen(fname);
1.120 paf 819: while(size) {
1.126 paf 820: char c=fname[size-1];
1.120 paf 821: if(c=='/' || c=='\\')
822: fname[--size]=0;
823: else
824: break;
825: }
826: }
1.51 paf 827: struct stat finfo;
1.118 paf 828: if(access(fname, R_OK)==0 && entry_exists(fname, &finfo)) {
1.109 paf 829: bool is_dir=(finfo.st_mode&S_IFDIR) != 0;
1.51 paf 830: return is_dir==need_dir;
831: }
832: return false;
833: }
1.143.2.21.2. (paf 834:): bool file_readable(const String& file_spec) {
1.126 paf 835: return entry_readable(file_spec, false);
1.51 paf 836: }
1.143.2.21.2. (paf 837:): bool dir_readable(const String& file_spec) {
1.126 paf 838: return entry_readable(file_spec, true);
1.65 parser 839: }
1.143.2.21.2. 0(paf 840:3): const String* file_readable(const String& path, const String& name) {
(paf 841:): String& result=*new String(path);
842:): result << "/";
843:): result << name;
844:): return file_readable(result)?&result:0;
1.43 paf 845: }
1.143.2.21.2. (paf 846:): bool file_executable(const String& file_spec) {
847:): return access(file_spec.cstr(String::L_FILE_SPEC), X_OK)==0;
1.44 paf 848: }
849:
1.143.2.21.2. (paf 850:): bool file_stat(const String& file_spec,
1.58 parser 851: size_t& rsize,
1.126 paf 852: time_t& ratime,
853: time_t& rmtime,
854: time_t& rctime,
1.64 parser 855: bool fail_on_read_problem) {
1.143.2.21.2. (paf 856:): const char* fname=file_spec.cstr(String::L_FILE_SPEC);
5(paf 857:3): struct stat finfo;
1.44 paf 858: if(stat(fname, &finfo)!=0)
1.64 parser 859: if(fail_on_read_problem)
1.126 paf 860: throw Exception("file.missing",
1.143.2.21.2. (paf 861:): &file_spec,
1.67 parser 862: "getting file size failed: %s (%d), real filename '%s'",
1.143.2.21.2. (paf 863:): strerror(errno), errno, fname);
1.64 parser 864: else
865: return false;
1.58 parser 866: rsize=finfo.st_size;
867: ratime=finfo.st_atime;
868: rmtime=finfo.st_mtime;
869: rctime=finfo.st_ctime;
1.64 parser 870: return true;
1.18 paf 871: }
872:
1.126 paf 873: char* getrow(char* *row_ref, char delim) {
874: char* result=*row_ref;
1.8 paf 875: if(result) {
1.126 paf 876: *row_ref=strchr(result, delim);
1.8 paf 877: if(*row_ref)
878: *((*row_ref)++)=0;
879: else if(!*result)
880: return 0;
881: }
882: return result;
883: }
884:
1.126 paf 885: char* lsplit(char* string, char delim) {
1.23 paf 886: if(string) {
1.126 paf 887: char* v=strchr(string, delim);
1.8 paf 888: if(v) {
889: *v=0;
890: return v+1;
891: }
892: }
893: return 0;
894: }
895:
1.126 paf 896: char* lsplit(char* *string_ref, char delim) {
897: char* result=*string_ref;
898: char* next=lsplit(*string_ref, delim);
1.8 paf 899: *string_ref=next;
900: return result;
1.9 paf 901: }
902:
1.126 paf 903: char* rsplit(char* string, char delim) {
1.18 paf 904: if(string) {
1.126 paf 905: char* v=strrchr(string, delim);
1.18 paf 906: if(v) {
1.9 paf 907: *v=0;
908: return v+1;
909: }
910: }
911: return NULL;
1.10 paf 912: }
913:
1.37 paf 914: /// @todo less stupid type detection
1.143.2.21.2. (paf 915:): const char* format(double value, char* fmt) {
1.126 paf 916: char local_buf[MAX_NUMBER];
1.108 paf 917: size_t size;
918:
1.10 paf 919: if(fmt)
920: if(strpbrk(fmt, "diouxX"))
921: if(strpbrk(fmt, "ouxX"))
1.126 paf 922: size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value);
1.10 paf 923: else
1.126 paf 924: size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value);
1.10 paf 925: else
1.126 paf 926: size=snprintf(local_buf, sizeof(local_buf), fmt, value);
1.10 paf 927: else
1.126 paf 928: size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value);
1.10 paf 929:
1.143.2.21.2. (paf 930:): return pa_strdup(local_buf, size);
1.12 paf 931: }
932:
1.36 paf 933: size_t stdout_write(const void *buf, size_t size) {
1.12 paf 934: #ifdef WIN32
935: do{
1.143.2.21.2. (paf 936:): int chunk_written=fwrite(buf, 1, min((size_t)8*0x400, size), stdout);
1.12 paf 937: if(chunk_written<=0)
938: break;
939: size-=chunk_written;
1.36 paf 940: buf=((const char*)buf)+chunk_written;
1.126 paf 941: } while(size>0);
1.12 paf 942:
943: return size;
944: #else
1.126 paf 945: return fwrite(buf, 1, size, stdout);
1.12 paf 946: #endif
1.2 paf 947: }
1.14 paf 948:
1.143.2.21.2. (paf 949:): char* unescape_chars(const char* cp, int len) {
950:): char* s=new(PointerFreeGC) char[len + 1];
1.14 paf 951: enum EscapeState {
1.33 paf 952: EscapeRest,
953: EscapeFirst,
1.14 paf 954: EscapeSecond
955: } escapeState=EscapeRest;
956: int escapedValue=0;
957: int srcPos=0;
958: int dstPos=0;
959: while(srcPos < len) {
1.126 paf 960: int ch=cp[srcPos];
1.14 paf 961: switch(escapeState) {
962: case EscapeRest:
963: if(ch=='%') {
964: escapeState=EscapeFirst;
965: } else if(ch=='+') {
1.126 paf 966: s[dstPos++]=' ';
1.14 paf 967: } else {
968: s[dstPos++]=ch;
969: }
970: break;
971: case EscapeFirst:
972: escapedValue=hex_value[ch] << 4;
973: escapeState=EscapeSecond;
974: break;
975: case EscapeSecond:
1.126 paf 976: escapedValue +=hex_value[ch];
1.14 paf 977: s[dstPos++]=escapedValue;
978: escapeState=EscapeRest;
979: break;
980: }
1.126 paf 981: srcPos++;
1.14 paf 982: }
983: s[dstPos]=0;
984: return s;
1.24 paf 985: }
986:
987: #ifdef WIN32
1.126 paf 988: void back_slashes_to_slashes(char* s) {
1.24 paf 989: if(s)
990: for(; *s; s++)
991: if(*s=='\\')
1.126 paf 992: *s='/';
1.24 paf 993: }
1.42 paf 994: /*
1.126 paf 995: void slashes_to_back_slashes(char* s) {
1.42 paf 996: if(s)
997: for(; *s; s++)
998: if(*s=='/')
1.126 paf 999: *s='\\';
1.42 paf 1000: }
1001: */
1.24 paf 1002: #endif
1.41 paf 1003:
1.126 paf 1004: bool StrEqNc(const char* s1, const char* s2, bool strict) {
1.41 paf 1005: while(true) {
1006: if(!(*s1)) {
1007: if(!(*s2))
1008: return true;
1009: else
1010: return !strict;
1011: } else if(!(*s2))
1012: return !strict;
1013: if(isalpha(*s1)) {
1014: if(tolower(*s1) !=tolower(*s2))
1015: return false;
1016: } else if((*s1) !=(*s2))
1017: return false;
1.126 paf 1018: s1++;
1019: s2++;
1.41 paf 1020: }
1.57 parser 1021: }
1022:
1.84 paf 1023: static bool isLeap(int year) {
1.57 parser 1024: return !(
1025: (year % 4) || ((year % 400) && !(year % 100))
1.126 paf 1026: );
1.57 parser 1027: }
1028:
1029: int getMonthDays(int year, int month) {
1030: int monthDays[]={
1.126 paf 1031: 31,
1032: isLeap(year) ? 29 : 28,
1033: 31,
1034: 30,
1035: 31,
1036: 30,
1037: 31,
1038: 31,
1039: 30,
1040: 31,
1041: 30,
1.57 parser 1042: 31
1.126 paf 1043: };
1044: return monthDays[month];
1.41 paf 1045: }
1.69 parser 1046:
1.126 paf 1047: void remove_crlf(char* start, char* end) {
1048: for(char* p=start; p<end; p++)
1.69 parser 1049: switch(*p) {
1.126 paf 1050: case '\n': *p='|'; break;
1051: case '\r': *p=' '; break;
1.69 parser 1052: }
1.91 paf 1053: }
1054:
1055:
1056: /// must be last in this file
1057: #undef vsnprintf
1.126 paf 1058: int __vsnprintf(char* b, size_t s, const char* f, va_list l) {
1.91 paf 1059: if(!s)
1060: return 0;
1061:
1062: int r;
1063: // note: on win32& maybe somewhere else
1064: // vsnprintf do not writes terminating 0 in 'buffer full' case, reducing
1065: --s;
1066: #if _MSC_VER
1067: /*
1068: win32:
1069: mk:@MSITStore:C:\Program%20Files\Microsoft%20Visual%20Studio\MSDN\2001APR\1033\vccore.chm::/html/_crt__vsnprintf.2c_._vsnwprintf.htm
1070:
1.143.2.12 paf 1071: if the number of bytes to write exceeds buffer, then count bytes are written and Ö1 is returned
1.91 paf 1072: */
1.126 paf 1073: r=_vsnprintf(b, s, f, l);
1.91 paf 1074: if(r<0)
1075: r=s;
1076: #else
1.126 paf 1077: r=vsnprintf(b, s, f, l);
1.91 paf 1078: /*
1079: solaris:
1080: man vsnprintf
1081:
1082: The snprintf() function returns the number of characters
1083: formatted, that is, the number of characters that would have
1084: been written to the buffer if it were large enough. If the
1085: value of n is 0 on a call to snprintf(), an unspecified
1086: value less than 1 is returned.
1087: */
1088:
1089: if(r<0)
1090: r=0;
1091: else if(r>s)
1092: r=s;
1093: #endif
1094: b[r]=0;
1095: return r;
1096: }
1097:
1.126 paf 1098: int __snprintf(char* b, size_t s, const char* f, ...) {
1.91 paf 1099: va_list l;
1.126 paf 1100: va_start(l, f);
1101: int r=__vsnprintf(b, s, f, l);
1102: va_end(l);
1.91 paf 1103: return r;
1.98 paf 1104: }
1105:
1106: int pa_sleep(unsigned long secs, unsigned long usecs) {
1.126 paf 1107: for (; usecs >= 1000000; ++secs, usecs -= 1000000);
1.98 paf 1108:
1109: #ifdef WIN32
1.126 paf 1110: Sleep(secs * 1000 + usecs / 1000);
1.98 paf 1111: return 0;
1112: #else
1113: struct timeval t;
1114: t.tv_sec = secs;
1115: t.tv_usec = usecs;
1.126 paf 1116: return (select(0, NULL, NULL, NULL, &t) == -1 ? errno : 0);
1.98 paf 1117: #endif
1.135 paf 1118: }
1119:
1120:
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