--- parser3/src/main/pa_common.C 2003/01/31 14:03:54 1.143.2.11 +++ parser3/src/main/pa_common.C 2009/09/08 09:09:26 1.250 @@ -1,24 +1,42 @@ /** @file Parser: commonly functions. - Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright(c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) -*/ -static const char* IDENT_COMMON_C="$Date: 2003/01/31 14:03:54 $"; + * BASE64 part + * Authors: Michael Zucchi + * Jeffrey Stedfast + * + * Copyright 2000-2004 Ximian, Inc. (www.ximian.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA. + * + */ + +static const char * const IDENT_COMMON_C="$Date: 2009/09/08 09:09:26 $"; #include "pa_common.h" #include "pa_exception.h" -#include "pa_value_includes.h" #include "pa_hash.h" -#include "pa_vstring.h" -#include "pa_vint.h" - -#ifdef WIN32 -# include -#else -# define closesocket close -#endif +#include "pa_globals.h" +#include "pa_charsets.h" +#include "pa_http.h" +#include "pa_request_charsets.h" +#include "pcre.h" +#include "pa_request.h" // some maybe-undefined constants @@ -39,64 +57,35 @@ static const char* IDENT_COMMON_C="$Date # endif #endif -// locking constants +// defines for globals -#ifdef HAVE_FLOCK +#define FILE_STATUS_NAME "status" -static int lock_shared_blocking(int fd) { return flock(fd, LOCK_SH); } -static int lock_exclusive_blocking(int fd) { return flock(fd, LOCK_EX); } -static int lock_exclusive_nonblocking(int fd) { return flock(fd, LOCK_EX || LOCK_NB); } -static int unlock(int fd) { return flock(fd, LOCK_UN); } +// globals -#else -#ifdef HAVE__LOCKING - -#define FLOCK(operation) lseek(fd, 0, SEEK_SET); return _locking(fd, operation, 1) -static int lock_shared_blocking(int fd) { FLOCK(_LK_LOCK); } -static int lock_exclusive_blocking(int fd) { FLOCK(_LK_LOCK); } -static int lock_exclusive_nonblocking(int fd) { FLOCK(_LK_NBLCK); } -static int unlock(int fd) { FLOCK(_LK_UNLCK); } - -#else -#ifdef HAVE_FCNTL - -#define FLOCK(cmd, arg) struct flock ls={arg, SEEK_SET}; return fcntl(fd, cmd, &ls) -static int lock_shared_blocking(int fd) { FLOCK(F_SETLKW, F_RDLCK); } -static int lock_exclusive_blocking(int fd) { FLOCK(F_SETLKW, F_WRLCK); } -static int lock_exclusive_nonblocking(int fd) { FLOCK(F_SETLK, F_RDLCK); } -static int unlock(int fd) { FLOCK(F_SETLK, F_UNLCK); } - -#else -#ifdef HAVE_LOCKF +const String file_status_name(FILE_STATUS_NAME); -#define FLOCK(fd, operation) lseek(fd, 0, SEEK_SET); return lockf(fd, operation, 1) -static int lock_shared_blocking(int fd) { FLOCK(F_LOCK); } // on intel solaris man doesn't have doc on shared blocking -static int lock_exclusive_blocking(int fd) { FLOCK(F_LOCK); } -static int lock_exclusive_nonblocking(int fd) { FLOCK(F_TLOCK); } -static int unlock(int fd) { FLOCK(F_TLOCK); } +// functions -#else - -#error unable to find file locking func - -#endif -#endif -#endif -#endif - -#define DEFAULT_USER_AGENT "parser3" - - -void fix_line_breaks(char* buf, size_t& size) { - if(size==0) - return; +const char* capitalize(const char* s){ + char* result=pa_strdup(s); + if(result){ + bool upper=true; + for(char* c=result; *c; c++){ + *c=upper ? (char)toupper((unsigned char)*c) : (char)tolower((unsigned char)*c); + upper=strchr("-_ ", *c) != 0; + } + } + return (const char*)result; +} +void fix_line_breaks(char *str, size_t& length) { //_asm int 3; - const char* const eob=buf+size; - char* dest=buf; + const char* const eob=str+length; + char* dest=str; // fix DOS: \r\n -> \n // fix Macintosh: \r -> \n - char* bol=buf; + char* bol=str; while(char* eol=(char*)memchr(bol, '\r', eob -bol)) { size_t len=eol-bol; if(dest!=bol) @@ -106,356 +95,184 @@ void fix_line_breaks(char* buf, size_t& if(&eol[1]sin_family=AF_INET; - addr->sin_port=htons(port); - if(host) { - if(struct hostent *hostIP=gethostbyname(host)) - memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length); - else - return false; - } else - addr->sin_addr.s_addr=INADDR_ANY; - return true; +char* file_read_text(Request_charsets& charsets, + const String& file_spec, + bool fail_on_read_problem, + HashStringValue* params, + bool transcode_result) { + File_read_result file= + file_read(charsets, file_spec, true, params, fail_on_read_problem, 0, 0, 0, transcode_result); + return file.success?file.str:0; +} + +char* file_load_text(Request& r, + const String& file_spec, + bool fail_on_read_problem, + HashStringValue* params, + bool transcode_result) { + File_read_result file= + file_load(r, file_spec, true, params, fail_on_read_problem, 0, 0, 0, transcode_result); + return file.success?file.str:0; } -static int http_read_response(Pool& pool, String& response, int sock, bool fail_on_status_ne_200){ +/// these options were handled but not checked elsewhere, now check them +int pa_get_valid_file_options_count(HashStringValue& options) { int result=0; - ssize_t EOLat=0; - while(true) { - char *buf=(char *)pool.malloc(MAX_STRING); - ssize_t size=recv(sock, buf, MAX_STRING, 0); - if(size<=0) - break; - response.APPEND_TAINTED(buf, size, "remote HTTP server response", 0); - if(!result && (EOLat=response.pos("\r\n", 2))>=0) { // checking status in first response - StringPtr status_line=response.mid(0, (size_t)EOLat); - Array astatus; - status_line->split(astatus, 0, " ", 1); - StringPtr status_code=astatus.get(1); - result=status_code->as_int(); - - if(fail_on_status_ne_200 && result!=200) - throw Exception("http.status", - status_code, - "invalid HTTP response status"); - } - } - if(result) - return result; - else - throw Exception("http.response", - Exception::undefined_source, - "bad response from host - no status found (size=%lu)", response.size()); -} - -/* ********************** request *************************** */ - -#if defined(SIGALRM) && defined(HAVE_SIGSETJMP) && defined(HAVE_SIGLONGJMP) -# define WE_CAN_USE_ALARM -#endif - -#ifdef WE_CAN_USE_ALARM -static sigjmp_buf timeout_env; -static void timeout_handler(int sig){ - siglongjmp(timeout_env, 1); -} -#endif - -static int http_request(Pool& pool, - String& response, - StringPtr origin_string, - const char* host, int port, - const char* request, - int timeout, - bool fail_on_status_ne_200) { - if(!host) - throw Exception("http.host", - origin_string, - "zero hostname"); //never - -#ifdef WE_CAN_USE_ALARM - signal(SIGALRM, timeout_handler); -#endif - int sock=-1; - try { - int result; -#ifdef WE_CAN_USE_ALARM - if(sigsetjmp(timeout_env, 1)) - throw Exception("http.timeout", - origin_string, - "timeout occured while retrieving document"); - else { - alarm(timeout); -#endif - struct sockaddr_in dest; - - if(!set_addr(&dest, host, port)) - throw Exception("http.host", - origin_string, - "can not resolve hostname \"%s\"", host); - - if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) - throw Exception("http.connect", - origin_string, - "can not make socket: %s (%d)", strerror(errno), errno); - if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) - throw Exception("http.connect", - origin_string, - "can not connect to host \"%s\": %s (%d)", host, strerror(errno), errno); - size_t request_size=strlen(request); - if(send(sock, request, request_size, 0)!=(ssize_t)request_size) - throw Exception("http.connect", - origin_string, - "error sending request: %s (%d)", strerror(errno), errno); - - result=http_read_response(pool, response, sock, fail_on_status_ne_200); - closesocket(sock); -#ifdef WE_CAN_USE_ALARM - alarm(0); - } -#endif - return result; - } catch(...) { - if(sock>=0) - closesocket(sock); -#ifdef WE_CAN_USE_ALARM - alarm(0); -#endif - rethrow; - } -} - -#ifndef DOXYGEN -struct Http_pass_header_info { - Pool* pool; - Charset* charset; - String* request; - bool user_agent_specified; -}; -#endif -static void http_pass_header(HashStringValue::key_type key, HashStringValue::value_type value, - Http_pass_header_info *info) { - *(info->request)<<*key<<": " - << *attributed_meaning_to_string(*info->pool, value, String::UL_HTTP_HEADER, false) - <<"\n"; - - if(*key->change_case(*info->pool, *info->charset, String::CC_UPPER)=="USER-AGENT") - info->user_agent_specified=true; -} -static HashStringValuePtr file_read_http(Pool& pool, Charset& charset, StringPtr file_spec, - char*& data, size_t& data_size, - HashStringValue *options=0, bool return_outfields=false) { - HashStringValuePtr result(0); - char host[MAX_STRING]; - const char* uri; - int port; - CharPtr method(0); - int timeout=2; - bool fail_on_status_ne_200=true; - ValuePtr vheaders(0); - - StringPtr connect_string(new String()); - // not in ^sql{... UL_SQL ...} spirit, but closer to ^file::load one - connect_string->append(*file_spec, String::UL_URI); // tainted pieces -> URI pieces - - CharPtr connect_string_cstr=connect_string->cstr(String::UL_UNSPECIFIED); - const char* current=connect_string_cstr; - if(strncmp(current, "http://", 7)!=0) - throw Exception(0, - connect_string, - "does not start with http://"); //never - current+=7; - - strncpy(host, current, sizeof(host)-1); host[sizeof(host)-1]=0; - char* host_uri=lsplit(host, '/'); - uri=host_uri?current+(host_uri-1-host):"/"; - char* port_cstr=lsplit(host, ':'); - char* error_pos=0; - port=port_cstr?strtol(port_cstr, &error_pos, 0):80; - - if(options) { - int valid_options=0; - if(ValuePtr vmethod=options->get(http_method_name)) { - valid_options++; - method=vmethod->as_string(&pool)->cstr(); - } - if(ValuePtr vtimeout=options->get(http_timeout_name)) { - valid_options++; - timeout=vtimeout->as_int(); - } - if(vheaders=options->get(http_headers_name)) { - valid_options++; - } - if(ValuePtr vany_status=options->get(http_any_status_name)) { - valid_options++; - fail_on_status_ne_200=!vany_status->as_bool(); - } - - if(valid_options!=options->count()) - throw Exception("parser.runtime", - Exception::undefined_source, - "invalid option passed"); - } - - //making request - String request; - if(method) - request<is_string()) { // allow empty - if(HashStringValue *headers=vheaders->get_hash(connect_string)) { - Http_pass_header_info info={&pool, &charset, &request}; - headers->for_each(http_pass_header, &info); - user_agent_specified=info.user_agent_specified; - } else - throw Exception("parser.runtime", - connect_string, - "headers param must be hash"); - }; - if(!user_agent_specified) // defaulting - request << "user-agent: " DEFAULT_USER_AGENT "\n"; - request<<"\n"; - - //sending request - String response; - CharPtr request_cstr=request.cstr(String::UL_UNSPECIFIED); - int status_code=http_request(pool, response, - connect_string, host, port, request_cstr, - timeout, fail_on_status_ne_200); - - //processing results - int pos=response.pos("\r\n\r\n", 4); - if(pos<1){ - throw Exception("http.response", - connect_string, - "bad response from host - no headers found"); - } - StringPtr header_block=response.mid(0, pos); - StringPtr body=response.mid(pos+4, response.size()); - - Array aheaders; - HashStringValuePtr headers(new HashStringValue); - header_block->split(aheaders, 0, "\r\n", 2); - - //processing headers - for(int i=1; ipos(": ", 2); - if(pos<1) - throw Exception("http.response", - connect_string, - "bad response from host - bad header \"%s\"", line->cstr()); - - headers->put( - line->mid(0, pos)->change_case(pool, charset, String::CC_UPPER), - ValuePtr(new VString(line->mid(pos+2, line->size())))); - } - - // output response - data=new(pool) char[data_size=body->size()]; - body->store_to(data, String::UL_AS_IS); - if(return_outfields) { - headers->put(file_status_name, ValuePtr(new VInt(status_code))); - return headers; - } else - return HashStringValuePtr(0); + if(options.get(PA_SQL_LIMIT_NAME)) + result++; + if(options.get(PA_SQL_OFFSET_NAME)) + result++; + if(options.get(PA_COLUMN_SEPARATOR_NAME)) + result++; + if(options.get(PA_COLUMN_ENCLOSER_NAME)) + result++; + if(options.get(PA_CHARSET_NAME)) + result++; + return result; } #ifndef DOXYGEN struct File_read_action_info { char **data; size_t *data_size; + char* buf; size_t offset; size_t count; }; #endif -static void file_read_action(Pool& pool, - struct stat& finfo, - int f, - StringPtr file_spec, const char* fname, bool as_text, - void *context) { +static void file_read_action( + struct stat& finfo, + int f, + const String& file_spec, const char* /*fname*/, bool as_text, + void *context) { File_read_action_info& info=*static_cast(context); - if(size_t to_read_size=(size_t)finfo.st_size) { - *info.data=pool.malloc(to_read_size+(as_text?1:0)); + size_t to_read_size=info.count; + if(!to_read_size) + to_read_size=(size_t)finfo.st_size; + assert( !(info.buf && as_text) ); + if(to_read_size) { + if(info.offset) + lseek(f, info.offset, SEEK_SET); + *info.data=info.buf + ? info.buf + : new(PointerFreeGC) char[to_read_size+(as_text?1:0)]; *info.data_size=(size_t)read(f, *info.data, to_read_size); if(ssize_t(*info.data_size)<0 || *info.data_size>to_read_size) - throw Exception(0, - file_spec, - "read failed: actually read %lu bytes count not in [0..%lu] valid range", + throw Exception("file.read", + &file_spec, + "read failed: actually read %u bytes count not in [0..%u] valid range", *info.data_size, to_read_size); } else { // empty file - if(as_text) { - *info.data=pool.malloc(1); - *(char*)(*info.data)=0; - } else - *info.data=0; + // for both, text and binary: for text we need that terminator, for binary we need nonzero pointer to be able to save such files + *info.data=new(PointerFreeGC) char[1]; + *(char*)(*info.data)=0; *info.data_size=0; return; } } -File_read_result file_read(Pool& pool, Charset& charset, StringPtr file_spec, - char*& data, size_t& data_size, - bool as_text, HashStringValue *params, HashStringValue** out_fields, - bool fail_on_read_problem) { - File_read_result result; - if(file_spec->starts_with("http://", 7)) { - // fail on read problem - result.fields=file_read_http(pool, charset, file_spec, data, data_size, params); - result.success=true; - } else { - File_read_action_info info={&data, &data_size}; - result.success=file_read_action_under_lock(pool, file_spec, - "read", file_read_action, &info, - as_text, fail_on_read_problem); + +File_read_result file_read(Request_charsets& charsets, const String& file_spec, + bool as_text, HashStringValue *params, + bool fail_on_read_problem, + char* buf, size_t offset, size_t count, bool transcode_text_result) { + File_read_result result={false, 0, 0, 0}; + if(params){ + int valid_options=pa_get_valid_file_options_count(*params); + if(valid_options!=params->count()) + throw Exception(PARSER_RUNTIME, + 0, + INVALID_OPTION_PASSED); } - if(result.success && as_text) { - // UTF-8 signature: EF BB BF - if(data_size>=3) { - char *in=(char *)data; - if((in[0] == '\xEF') && (in[1] == '\xBB') && - (in[2] == '\xBF')) { - data=in+3; data_size-=3;// skip prefix + File_read_action_info info={&result.str, &result.length, buf, offset, count}; + + result.success=file_read_action_under_lock(file_spec, + "read", file_read_action, &info, + as_text, fail_on_read_problem); + + if(as_text){ + if(result.success){ + if(result.length>=3 && strncmp(result.str, "\xEF\xBB\xBF", 3)==0){ + // skip UTF-8 signature (BOM code) + result.str+=3; + result.length-=3; + } + + if(result.length && transcode_text_result && params){ // must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below + if(Value* vcharset_name=params->get(PA_CHARSET_NAME)){ + Charset asked_charset=::charsets.get(vcharset_name->as_string(). + change_case(charsets.source(), String::CC_UPPER)); + + String::C body=String::C(result.str, result.length); + body=Charset::transcode(body, asked_charset, charsets.source()); + + result.str=const_cast(body.str); // hacking a little + result.length=body.length; + } } } - - fix_line_breaks((char *)(data), data_size); - // note: after fixing - ((char*&)(data))[data_size]=0; + if(result.length) + fix_line_breaks(result.str, result.length); } return result; } -bool file_read_action_under_lock(Pool& pool, StringPtr file_spec, +File_read_result file_load(Request& r, const String& file_spec, + bool as_text, HashStringValue *params, + bool fail_on_read_problem, + char* buf, size_t offset, size_t count, bool transcode_text_result) { + + File_read_result result={false, 0, 0, 0}; + if(file_spec.starts_with("http://")) { + if(offset || count) + throw Exception(PARSER_RUNTIME, + 0, + "offset and load options are not supported for HTTP:// file load"); + + // fail on read problem + File_read_http_result http=pa_internal_file_read_http(r, file_spec, as_text, params, transcode_text_result); + result.success=true; + result.str=http.str; + result.length=http.length; + result.headers=http.headers; + } else + result= + file_read(r.charsets, file_spec, as_text, params, fail_on_read_problem, buf, offset, count, transcode_text_result); + + return result; +} + +#ifdef PA_SAFE_MODE +void check_safe_mode(struct stat finfo, const String& file_spec, const char* fname) { + if(finfo.st_uid/*foreign?*/!=geteuid() + && finfo.st_gid/*foreign?*/!=getegid()) + throw Exception(PARSER_RUNTIME, + &file_spec, + "parser is in safe mode: " + "reading files of foreign group and user disabled " + "[recompile parser with --disable-safe-mode configure option], " + "actual filename '%s', " + "fuid(%d)!=euid(%d) or fgid(%d)!=egid(%d)", + fname, + finfo.st_uid, geteuid(), + finfo.st_gid, getegid()); +} +#endif + +bool file_read_action_under_lock(const String& file_spec, const char* action_name, File_read_action action, void *context, bool as_text, bool fail_on_read_problem) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); + const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC); int f; // first open, next stat: @@ -467,67 +284,64 @@ bool file_read_action_under_lock(Pool& p // they delay update till open, so we would receive "!^test[" string // if would do stat, next open. // later: it seems, even this does not help sometimes - if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) { + if((f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0) { try { - if(lock_shared_blocking(f)!=0) + if(pa_lock_shared_blocking(f)!=0) throw Exception("file.lock", - file_spec, + &file_spec, "shared lock failed: %s (%d), actual filename '%s'", - strerror(errno), errno, fname); + strerror(errno), errno, fname); struct stat finfo; if(stat(fname, &finfo)!=0) throw Exception("file.missing", // hardly possible: we just opened it OK - file_spec, + &file_spec, "stat failed: %s (%d), actual filename '%s'", - strerror(errno), errno, fname); + strerror(errno), errno, fname); #ifdef PA_SAFE_MODE - if(finfo.st_uid/*foreign?*/!=geteuid() - && finfo.st_gid/*foreign?*/!=getegid()) - throw Exception("parser.runtime", - file_spec, - "parser is in safe mode: reading files of foreign group and user disabled [recompile parser with --disable-safe-mode configure option], actual filename '%s'", - fname); + check_safe_mode(finfo, file_spec, fname); #endif - action(pool, finfo, f, file_spec, fname, as_text, context); + action(finfo, f, file_spec, fname, as_text, context); } catch(...) { - unlock(f);close(f); + pa_unlock(f);close(f); if(fail_on_read_problem) rethrow; return false; } - unlock(f);close(f); + pa_unlock(f);close(f); return true; - } else { + } else { if(fail_on_read_problem) throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, - file_spec, + &file_spec, "%s failed: %s (%d), actual filename '%s'", - action_name, strerror(errno), errno, fname); + action_name, strerror(errno), errno, fname); return false; } } -static void create_dir_for_file(StringPtr file_spec) { +void create_dir_for_file(const String& file_spec) { size_t pos_after=1; - int pos_before; - while((pos_before=file_spec->pos("/", 1, pos_after))>=0) { - mkdir(file_spec->mid(0, pos_before)->cstr(String::UL_FILE_SPEC), 0775); + size_t pos_before; + while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) { + mkdir(file_spec.mid(0, pos_before).taint_cstr(String::L_FILE_SPEC), 0775); pos_after=pos_before+1; } } bool file_write_action_under_lock( - StringPtr file_spec, - const char* action_name, File_write_action action, void *context, + const String& file_spec, + const char* action_name, + File_write_action action, + void *context, bool as_text, bool do_append, bool do_block, bool fail_on_lock_problem) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); + const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC); int f; if(access(fname, W_OK)!=0) // no create_dir_for_file(file_spec); @@ -536,11 +350,11 @@ bool file_write_action_under_lock( O_CREAT|O_RDWR |(as_text?_O_TEXT:_O_BINARY) |(do_append?O_APPEND:PA_O_TRUNC), 0664))>=0) { - if((do_block?lock_exclusive_blocking(f):lock_exclusive_nonblocking(f))!=0) { + if((do_block?pa_lock_exclusive_blocking(f):pa_lock_exclusive_nonblocking(f))!=0) { Exception e("file.lock", - file_spec, + &file_spec, "shared lock failed: %s (%d), actual filename '%s'", - strerror(errno), errno, fname); + strerror(errno), errno, fname); close(f); if(fail_on_lock_problem) throw e; @@ -554,7 +368,7 @@ bool file_write_action_under_lock( if(!do_append) ftruncate(f, lseek(f, 0, SEEK_CUR)); // one can not use O_TRUNC, read lower #endif - unlock(f);close(f); + pa_unlock(f);close(f); rethrow; } @@ -562,77 +376,94 @@ bool file_write_action_under_lock( if(!do_append) ftruncate(f, lseek(f, 0, SEEK_CUR)); // O_TRUNC truncates even exclusevely write-locked file [thanks to Igor Milyakov for discovering] #endif - unlock(f);close(f); + pa_unlock(f);close(f); return true; } else throw Exception(errno==EACCES?"file.access":0, - file_spec, + &file_spec, "%s failed: %s (%d), actual filename '%s'", - action_name, strerror(errno), errno, fname); + action_name, strerror(errno), errno, fname); // here should be nothing, see rethrow above } #ifndef DOXYGEN struct File_write_action_info { - const void *data; size_t size; + const char* str; + size_t length; }; #endif static void file_write_action(int f, void *context) { File_write_action_info& info=*static_cast(context); - if(info.size) { - int written=write(f, info.data, info.size); + if(info.length) { + int written=write(f, info.str, info.length); if(written<0) - throw Exception(0, - Exception::undefined_source, + throw Exception("file.access", + 0, "write failed: %s (%d)", strerror(errno), errno); } } void file_write( - StringPtr file_spec, - const void *data, size_t size, + Request_charsets& charsets, + const String& file_spec, + const char* data, + size_t size, bool as_text, - bool do_append) { + bool do_append, + Charset* asked_charset) { + + if(as_text && asked_charset){ + String::C body=String::C(data, size); + body=Charset::transcode(body, charsets.source(), *asked_charset); + data=body.str; + size=body.length; + }; + File_write_action_info info={data, size}; + file_write_action_under_lock( file_spec, - "write", file_write_action, &info, + "write", + file_write_action, + &info, as_text, do_append); } // throws nothing! [this is required in file_move & file_delete] -static void rmdir(StringPtr file_spec, size_t pos_after) { - int pos_before; - if((pos_before=file_spec->pos("/", 1, pos_after))>=0) +static void rmdir(const String& file_spec, size_t pos_after) { + size_t pos_before; + if((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) rmdir(file_spec, pos_before+1); - rmdir(file_spec->mid(0, pos_after-1/* / */)->cstr(String::UL_FILE_SPEC)); + rmdir(file_spec.mid(0, pos_after-1/* / */).taint_cstr(String::L_FILE_SPEC)); } -bool file_delete(StringPtr file_spec, bool fail_on_read_problem) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); + +bool file_delete(const String& file_spec, bool fail_on_problem) { + const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC); if(unlink(fname)!=0) - if(fail_on_read_problem) + if(fail_on_problem) throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, - file_spec, + &file_spec, "unlink failed: %s (%d), actual filename '%s'", - strerror(errno), errno, fname); + strerror(errno), errno, fname); else return false; rmdir(file_spec, 1); return true; } -void file_move(StringPtr old_spec, StringPtr new_spec) { - CharPtr old_spec_cstr=old_spec->cstr(String::UL_FILE_SPEC); - CharPtr new_spec_cstr=new_spec->cstr(String::UL_FILE_SPEC); + +void file_move(const String& old_spec, const String& new_spec) { + const char* old_spec_cstr=old_spec.taint_cstr(String::L_FILE_SPEC); + const char* new_spec_cstr=new_spec.taint_cstr(String::L_FILE_SPEC); create_dir_for_file(new_spec); if(rename(old_spec_cstr, new_spec_cstr)!=0) throw Exception(errno==EACCES?"file.access":errno==ENOENT?"file.missing":0, - old_spec, + &old_spec, "rename failed: %s (%d), actual filename '%s' to '%s'", - strerror(errno), errno, old_spec_cstr, new_spec_cstr); + strerror(errno), errno, old_spec_cstr, new_spec_cstr); rmdir(old_spec, 1); } @@ -646,13 +477,13 @@ bool entry_exists(const char* fname, str return result; } -bool entry_exists(StringPtr file_spec) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); +bool entry_exists(const String& file_spec) { + const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC); return entry_exists(fname, 0); } -static bool entry_readable(StringPtr file_spec, bool need_dir) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); +static bool entry_readable(const String& file_spec, bool need_dir) { + char* fname=file_spec.taint_cstrm(String::L_FILE_SPEC); if(need_dir) { size_t size=strlen(fname); while(size) { @@ -670,36 +501,40 @@ static bool entry_readable(StringPtr fil } return false; } -bool file_readable(StringPtr file_spec) { + +bool file_exist(const String& file_spec) { return entry_readable(file_spec, false); } -bool dir_readable(StringPtr file_spec) { + +bool dir_exists(const String& file_spec) { return entry_readable(file_spec, true); } -StringPtr file_readable(StringPtr path, const String& name) { - StringPtr result(new String(*path)); - *result << "/"; - *result << name; - return file_readable(result)?result:StringPtr(0); -} -bool file_executable(StringPtr file_spec) { - return access(file_spec->cstr(String::UL_FILE_SPEC), X_OK)==0; -} - -bool file_stat(StringPtr file_spec, - size_t& rsize, - time_t& ratime, - time_t& rmtime, - time_t& rctime, - bool fail_on_read_problem) { - CharPtr fname=file_spec->cstr(String::UL_FILE_SPEC); - struct stat finfo; + +const String* file_exist(const String& path, const String& name) { + String& result=*new String(path); + result << "/"; + result << name; + return file_exist(result)?&result:0; +} + +bool file_executable(const String& file_spec) { + return access(file_spec.taint_cstr(String::L_FILE_SPEC), X_OK)==0; +} + +bool file_stat(const String& file_spec, + size_t& rsize, + time_t& ratime, + time_t& rmtime, + time_t& rctime, + bool fail_on_read_problem) { + const char* fname=file_spec.taint_cstr(String::L_FILE_SPEC); + struct stat finfo; if(stat(fname, &finfo)!=0) if(fail_on_read_problem) throw Exception("file.missing", - file_spec, + &file_spec, "getting file size failed: %s (%d), real filename '%s'", - strerror(errno), errno, fname); + strerror(errno), errno, fname); else return false; rsize=finfo.st_size; @@ -710,116 +545,231 @@ bool file_stat(StringPtr file_spec, } char* getrow(char* *row_ref, char delim) { - char* result=*row_ref; - if(result) { + char* result=*row_ref; + if(result) { *row_ref=strchr(result, delim); if(*row_ref) *((*row_ref)++)=0; else if(!*result) return 0; - } - return result; + } + return result; } char* lsplit(char* string, char delim) { - if(string) { + if(string) { char* v=strchr(string, delim); if(v) { *v=0; return v+1; } - } - return 0; + } + return 0; } char* lsplit(char* *string_ref, char delim) { - char* result=*string_ref; + char* result=*string_ref; char* next=lsplit(*string_ref, delim); - *string_ref=next; - return result; + *string_ref=next; + return result; } char* rsplit(char* string, char delim) { - if(string) { + if(string) { char* v=strrchr(string, delim); if(v) { *v=0; return v+1; } - } - return NULL; + } + return NULL; } -/// @todo less stupid type detection -const char* format(Pool& pool, double value, char* fmt) { - char local_buf[MAX_NUMBER]; - size_t size; - - if(fmt) - if(strpbrk(fmt, "diouxX")) - if(strpbrk(fmt, "ouxX")) - size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value); - else + +// format: %[flags][width][.precision]type http://msdn.microsoft.com/ru-ru/library/56e442dc(en-us,VS.80).aspx +// flags: '-', '+', ' ', '#', '0' http://msdn.microsoft.com/ru-ru/library/8aky45ct(en-us,VS.80).aspx +// width, precision: non negative decimal number +enum FormatType { + FormatInvalid, + FormatInt, + FormatUInt, + FormatDouble +}; +FormatType format_type(char* fmt){ + enum FormatState { + Percent, + Flags, + Width, + Precision, + Done + } state=Percent; + + FormatType result=FormatInvalid; + + char* pos=fmt; + while(char c=*(pos++)){ + switch(state){ + case Percent: + if(c=='%'){ + state=Flags; + } else { + return FormatInvalid; // 1st char must be '%' only + } + break; + case Flags: + if(strchr("-+ #0", c)!=0){ + break; + } + // go to the next step + case Width: + if(c=='.'){ + state=Precision; + break; + } + // go to the next step + case Precision: + if(c>='0' && c<='9'){ + if(state == Flags) state=Width; // no more flags + break; + } else if(c=='d' || c=='i'){ + result=FormatInt; + } else if(strchr("feEgG", c)!=0){ + result=FormatDouble; + } else if(strchr("uoxX", c)!=0){ + result=FormatUInt; + } else { + return FormatInvalid; // invalid char + } + state=Done; + break; + case Done: + return FormatInvalid; // no chars allowed after 'type' + } + } + return result; +} + + +const char* format(double value, char* fmt) { + char local_buf[MAX_NUMBER]; + int size=-1; + + if(fmt && strlen(fmt)){ + switch(format_type(fmt)){ + case FormatDouble: + size=snprintf(local_buf, sizeof(local_buf), fmt, value); + break; + case FormatInt: size=snprintf(local_buf, sizeof(local_buf), fmt, (int)value); - else - size=snprintf(local_buf, sizeof(local_buf), fmt, value); - else - size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value); - - return pool.copy(local_buf, size+1); + break; + case FormatUInt: + size=snprintf(local_buf, sizeof(local_buf), fmt, (uint)value); + break; + case FormatInvalid: + throw Exception(PARSER_RUNTIME, + 0, + "Incorrect format string '%s' was specified.", fmt); + } + } else + size=snprintf(local_buf, sizeof(local_buf), "%d", (int)value); + + if(size < 0 || size >= MAX_NUMBER-1){ // on win32 we manually reduce max size while printing + throw Exception(PARSER_RUNTIME, + 0, + "Error occure white executing snprintf with format string '%s'.", fmt); + } + + return pa_strdup(local_buf, (size_t)size); } size_t stdout_write(const void *buf, size_t size) { #ifdef WIN32 + size_t to_write = size; do{ - int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout); + int chunk_written=fwrite(buf, 1, min((size_t)8*0x400, size), stdout); if(chunk_written<=0) break; size-=chunk_written; buf=((const char*)buf)+chunk_written; } while(size>0); - return size; + return to_write-size; #else return fwrite(buf, 1, size, stdout); #endif } -char* unescape_chars(Pool& pool, const char* cp, int len) { - char* s=pool.malloc(len + 1); - enum EscapeState { - EscapeRest, - EscapeFirst, - EscapeSecond - } escapeState=EscapeRest; - int escapedValue=0; +enum EscapeState { + EscapeRest, + EscapeFirst, + EscapeSecond, + EscapeUnicode +}; + +// @todo prescan for reduce required size (unescaped sting in 1 byte charset requires less memory usually) +char* unescape_chars(const char* cp, int len, Charset* charset, bool ignore_plus){ + char* s=new(PointerFreeGC) char[len+1]; // must be enough (%uXXXX==6 bytes, max utf-8 char length==6 bytes) + char* dst=s; + EscapeState escapeState=EscapeRest; + uint escapedValue=0; int srcPos=0; - int dstPos=0; - while(srcPos < len) { - int ch=cp[srcPos]; - switch(escapeState) { - case EscapeRest: - if(ch=='%') { - escapeState=EscapeFirst; - } else if(ch=='+') { - s[dstPos++]=' '; - } else { - s[dstPos++]=ch; + short int jsCnt=0; + while(srcPosstore_Char((XMLByte*&)dst, (XMLCh)escapedValue, '?'); + escapeState=EscapeRest; + } + } else { + // not full unicode value + escapeState=EscapeRest; + } + break; } - break; - case EscapeFirst: - escapedValue=hex_value[ch] << 4; - escapeState=EscapeSecond; - break; - case EscapeSecond: - escapedValue +=hex_value[ch]; - s[dstPos++]=escapedValue; - escapeState=EscapeRest; - break; } - srcPos++; + + srcPos++; } - s[dstPos]=0; + + *dst=0; // zero-termination return s; } @@ -840,55 +790,111 @@ void slashes_to_back_slashes(char* s) { */ #endif -bool StrEqNc(const char* s1, const char* s2, bool strict) { +bool StrStartFromNC(const char* str, const char* substr, bool equal){ while(true) { - if(!(*s1)) { - if(!(*s2)) + if(!(*substr)){ + if(!(*str)) return true; else - return !strict; - } else if(!(*s2)) - return !strict; - if(isalpha(*s1)) { - if(tolower(*s1) !=tolower(*s2)) + return !equal; + } + if(!(*str)) + return false; + if(isalpha((unsigned char)*str)) { + if(tolower((unsigned char)*str)!=tolower((unsigned char)*substr)) return false; - } else if((*s1) !=(*s2)) + } else if((*str) != (*substr)) return false; - s1++; - s2++; + str++; + substr++; } } +size_t strpos(const char *str, const char *substr) { + const char *p = strstr(str, substr); + return (p==0)?STRING_NOT_FOUND:p-str; +} + +// content-type: xxx; charset=WE-NEED-THIS +// content-type: xxx; charset="WE-NEED-THIS" +// content-type: xxx; charset="WE-NEED-THIS"; +Charset* detect_charset(const char* content_type){ + if(content_type){ + char* CONTENT_TYPE=pa_strdup(content_type); + + for(char *p=CONTENT_TYPE; *p; p++) + *p=(char)toupper((unsigned char)*p); + + if(const char* begin=strstr(CONTENT_TYPE, "CHARSET=")){ + begin+=8; // skip "CHARSET=" + char* end=0; + if(*begin && (*begin=='"' || *begin =='\'')){ + char quote=*begin; + begin++; + end=(char*)strchr(begin, quote); + } + if(!end) + end=(char*)strchr(begin, ';'); + + if(end) + *end=0; // terminator + + return *begin?&charsets.get(begin):0; + } + } + return 0; +} + + static bool isLeap(int year) { - return !( - (year % 4) || ((year % 400) && !(year % 100)) - ); + return !( + (year % 4) || ((year % 400) && !(year % 100)) + ); } int getMonthDays(int year, int month) { - int monthDays[]={ - 31, - isLeap(year) ? 29 : 28, - 31, - 30, - 31, - 30, - 31, - 31, - 30, - 31, - 30, - 31 - }; - return monthDays[month]; -} - -void remove_crlf(char* start, char* end) { - for(char* p=start; ps) + else if((size_t)r>s) r=s; #endif b[r]=0; @@ -936,24 +947,358 @@ int __vsnprintf(char* b, size_t s, const int __snprintf(char* b, size_t s, const char* f, ...) { va_list l; - va_start(l, f); - int r=__vsnprintf(b, s, f, l); - va_end(l); + va_start(l, f); + int r=__vsnprintf(b, s, f, l); + va_end(l); return r; } -int pa_sleep(unsigned long secs, unsigned long usecs) { - for (; usecs >= 1000000; ++secs, usecs -= 1000000); +/* mime64 functions are from libgmime[http://spruce.sourceforge.net/gmime/] lib */ +/* + * Authors: Michael Zucchi + * Jeffrey Stedfast + * + * Copyright 2000 Helix Code, Inc. (www.helixcode.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA. + * + */ +static char *base64_alphabet = + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + +/** + * g_mime_utils_base64_encode_step: + * @in: input stream + * @inlen: length of the input + * @out: output string + * @state: holds the number of bits that are stored in @save + * @save: leftover bits that have not yet been encoded + * + * Base64 encodes a chunk of data. Performs an 'encode step', only + * encodes blocks of 3 characters to the output at a time, saves + * left-over state in state and save (initialise to 0 on first + * invocation). + * + * Returns the number of bytes encoded. + **/ +static size_t +g_mime_utils_base64_encode_step (const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save) +{ + register const unsigned char *inptr; + register unsigned char *outptr; + + if (inlen <= 0) + return 0; + + inptr = in; + outptr = out; + + if (inlen + ((unsigned char *)save)[0] > 2) { + const unsigned char *inend = in + inlen - 2; + register int c1 = 0, c2 = 0, c3 = 0; + register int already; + + already = *state; + + switch (((char *)save)[0]) { + case 1: c1 = ((unsigned char *)save)[1]; goto skip1; + case 2: c1 = ((unsigned char *)save)[1]; + c2 = ((unsigned char *)save)[2]; goto skip2; + } + + /* yes, we jump into the loop, no i'm not going to change it, its beautiful! */ + while (inptr < inend) { + c1 = *inptr++; + skip1: + c2 = *inptr++; + skip2: + c3 = *inptr++; + *outptr++ = base64_alphabet [c1 >> 2]; + *outptr++ = base64_alphabet [(c2 >> 4) | ((c1 & 0x3) << 4)]; + *outptr++ = base64_alphabet [((c2 & 0x0f) << 2) | (c3 >> 6)]; + *outptr++ = base64_alphabet [c3 & 0x3f]; + /* this is a bit ugly ... */ + if ((++already) >= 19) { + *outptr++ = '\n'; + already = 0; + } + } + + ((unsigned char *)save)[0] = 0; + inlen = 2 - (inptr - inend); + *state = already; + } + + //d(printf ("state = %d, inlen = %d\n", (int)((char *)save)[0], inlen)); + + if (inlen > 0) { + register char *saveout; + + /* points to the slot for the next char to save */ + saveout = & (((char *)save)[1]) + ((char *)save)[0]; + + /* inlen can only be 0 1 or 2 */ + switch (inlen) { + case 2: *saveout++ = *inptr++; + case 1: *saveout++ = *inptr++; + } + *(char *)save = *(char *)save+(char)inlen; + } + + /*d(printf ("mode = %d\nc1 = %c\nc2 = %c\n", + (int)((char *)save)[0], + (int)((char *)save)[1], + (int)((char *)save)[2]));*/ + + return (outptr - out); +} + +/** + * g_mime_utils_base64_encode_close: + * @in: input stream + * @inlen: length of the input + * @out: output string + * @state: holds the number of bits that are stored in @save + * @save: leftover bits that have not yet been encoded + * + * Base64 encodes the input stream to the output stream. Call this + * when finished encoding data with g_mime_utils_base64_encode_step to + * flush off the last little bit. + * + * Returns the number of bytes encoded. + **/ +static size_t +g_mime_utils_base64_encode_close (const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save) +{ + unsigned char *outptr = out; + int c1, c2; + + if (inlen > 0) + outptr += g_mime_utils_base64_encode_step (in, inlen, outptr, state, save); + + c1 = ((unsigned char *)save)[1]; + c2 = ((unsigned char *)save)[2]; + + switch (((unsigned char *)save)[0]) { + case 2: + outptr[2] = base64_alphabet [(c2 & 0x0f) << 2]; + goto skip; + case 1: + outptr[2] = '='; + skip: + outptr[0] = base64_alphabet [c1 >> 2]; + outptr[1] = base64_alphabet [c2 >> 4 | ((c1 & 0x3) << 4)]; + outptr[3] = '='; + outptr += 4; + break; + } + + *outptr++ = 0; + + *save = 0; + *state = 0; + + return (outptr - out); +} -#ifdef WIN32 - Sleep(secs * 1000 + usecs / 1000); - return 0; -#else - struct timeval t; - t.tv_sec = secs; - t.tv_usec = usecs; - return (select(0, NULL, NULL, NULL, &t) == -1 ? errno : 0); -#endif +static unsigned char gmime_base64_rank[256] = { + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255, + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255, + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255, +}; + +/** + * g_mime_utils_base64_decode_step: + * @in: input stream + * @inlen: max length of data to decode + * @out: output stream + * @state: holds the number of bits that are stored in @save + * @save: leftover bits that have not yet been decoded + * + * Decodes a chunk of base64 encoded data. + * + * Returns the number of bytes decoded (which have been dumped in @out). + **/ +size_t +g_mime_utils_base64_decode_step (const unsigned char *in, size_t inlen, unsigned char *out, int *state, int *save) +{ + const unsigned char *inptr; + unsigned char *outptr; + const unsigned char *inend; + int saved; + unsigned char c; + int i; + + inend = in + inlen; + outptr = out; + + /* convert 4 base64 bytes to 3 normal bytes */ + saved = *save; + i = *state; + inptr = in; + while (inptr < inend) { + c = gmime_base64_rank[*inptr++]; + if (c != 0xff) { + saved = (saved << 6) | c; + i++; + if (i == 4) { + *outptr++ = (unsigned char)(saved >> 16); + *outptr++ = (unsigned char)(saved >> 8); + *outptr++ = (unsigned char)(saved); + i = 0; + } + } + } + + *save = saved; + *state = i; + + /* quick scan back for '=' on the end somewhere */ + /* fortunately we can drop 1 output char for each trailing = (upto 2) */ + i = 2; + while (inptr > in && i) { + inptr--; + if (gmime_base64_rank[*inptr] != 0xff) { + if (*inptr == '=' && outptr > out) + outptr--; + i--; + } + } + + /* if i != 0 then there is a truncation error! */ + return (outptr - out); +} + + +char* pa_base64_encode(const char *in, size_t in_size){ + /* wont go to more than 2x size (overly conservative) */ + char* result=new(PointerFreeGC) char[in_size * 2 + 6]; + int state=0; + int save=0; +#ifndef NDEBUG + size_t filled= +#endif + g_mime_utils_base64_encode_close ((const unsigned char*)in, in_size, + (unsigned char*)result, &state, &save); + assert(filled <= in_size * 2 + 6); + + return result; +} + + +char* pa_base64_encode(const String& file_spec){ + unsigned char* base64=0; + File_base64_action_info info={&base64}; + + file_read_action_under_lock(file_spec, + "pa_base64_encode", file_base64_file_action, &info); + + return (char*)base64; +} + + +static void file_base64_file_action( + struct stat& finfo, + int f, + const String&, const char* /*fname*/, bool, + void *context) { + + if(finfo.st_size) { + File_base64_action_info& info=*static_cast(context); + *info.base64=new(PointerFreeGC) unsigned char[finfo.st_size * 2 + 6]; + unsigned char* base64 = *info.base64; + int state=0; + int save=0; + int nCount; + do { + unsigned char buffer[FILE_BUFFER_SIZE]; + nCount = file_block_read(f, buffer, sizeof(buffer)); + if( nCount ){ + size_t filled=g_mime_utils_base64_encode_step ((const unsigned char*)buffer, nCount, base64, &state, &save); + base64+=filled; + } + } while(nCount > 0); + g_mime_utils_base64_encode_close (0, 0, base64, &state, &save); + } +} + +void pa_base64_decode(const char *in, size_t in_size, char*& result, size_t& result_size) { + /* wont go to more than had (overly conservative) */ + result=new(PointerFreeGC) char[in_size+1/*terminator*/]; + int state=0; + int save=0; + result_size= + g_mime_utils_base64_decode_step ((const unsigned char*)in, in_size, + (unsigned char*)result, &state, &save); + assert(result_size <= in_size); + result[result_size]=0; // for text files } +int file_block_read(const int f, unsigned char* buffer, const size_t size){ + int nCount = read(f, buffer, size); + if (nCount < 0) + throw Exception("file.read", + 0, + "read failed: %s (%d)", strerror(errno), errno); + return nCount; +} + +const unsigned long pa_crc32(const char *in, size_t in_size){ + unsigned long crc32=0xFFFFFFFF; + + InitCrc32Table(); + for(size_t i = 0; i(context); + if(finfo.st_size) { + InitCrc32Table(); + int nCount=0; + do { + unsigned char buffer[FILE_BUFFER_SIZE]; + nCount = file_block_read(f, buffer, sizeof(buffer)); + for(int i = 0; i < nCount; i++) CalcCrc32(buffer[i], crc32); + } while(nCount > 0); + } +} +