--- parser3/src/main/pa_common.C 2004/08/27 15:49:48 1.191 +++ parser3/src/main/pa_common.C 2007/02/07 15:50:04 1.222 @@ -1,49 +1,39 @@ /** @file Parser: commonly functions. - Copyright(c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) + Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) -*/ -static const char * const IDENT_COMMON_C="$Date: 2004/08/27 15:49:48 $"; + * BASE64 part + * Authors: Michael Zucchi + * Jeffrey Stedfast + * + * Copyright 2000-2004 Ximian, Inc. (www.ximian.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA. + * + */ + +static const char * const IDENT_COMMON_C="$Date: 2007/02/07 15:50:04 $"; #include "pa_common.h" #include "pa_exception.h" #include "pa_hash.h" #include "pa_globals.h" -#include "pa_request_charsets.h" #include "pa_charsets.h" - -#define PA_HTTP - -#ifdef PA_HTTP -#include "pa_vstring.h" -#include "pa_vint.h" -#include "pa_vhash.h" -#include "pa_vtable.h" - -#ifdef CYGWIN -#define _GNU_H_WINDOWS32_SOCKETS -// for PASCAL -#include -// SOCKET -typedef u_int SOCKET; -int PASCAL closesocket(SOCKET); -#else -# if defined(WIN32) -# include -# else -# define closesocket close -# endif -#endif - -#else - -# if defined(WIN32) -# include -# endif - -#endif +#include "pa_http.h" // some maybe-undefined constants @@ -64,10 +54,6 @@ int PASCAL closesocket(SOCKET); # endif #endif -# ifndef INADDR_NONE -# define INADDR_NONE ((ulong) -1) -# endif - // defines for globals #define FILE_STATUS_NAME "status" @@ -76,23 +62,6 @@ int PASCAL closesocket(SOCKET); const String file_status_name(FILE_STATUS_NAME); -// defines - -#define HTTP_METHOD_NAME "method" -#define HTTP_FORM_NAME "form" -#define HTTP_BODY_NAME "body" -#define HTTP_TIMEOUT_NAME "timeout" -#define HTTP_HEADERS_NAME "headers" -#define HTTP_ANY_STATUS_NAME "any-status" -#define HTTP_CHARSET_NAME "charset" -#define HTTP_TABLES_NAME "tables" -#define HTTP_USER "user" -#define HTTP_PASSWORD "password" - -// defines - -#define DEFAULT_USER_AGENT "parser3" - // functions void fix_line_breaks(char *str, size_t& length) { @@ -130,531 +99,21 @@ char* file_read_text(Request_charsets& c return file.success?file.str:0; } -//http request stuff -#ifdef PA_HTTP - -#undef CRLF -#define CRLF "\r\n" - -static bool set_addr(struct sockaddr_in *addr, const char* host, const short port){ - memset(addr, 0, sizeof(*addr)); - addr->sin_family=AF_INET; - addr->sin_port=htons(port); - if(host) { - ulong packed_ip=inet_addr(host); - if(packed_ip!=INADDR_NONE) - memcpy(&addr->sin_addr, &packed_ip, sizeof(packed_ip)); - else { - struct hostent *hostIP=gethostbyname(host); - if(hostIP) - memcpy(&addr->sin_addr, hostIP->h_addr, hostIP->h_length); - else - return false; - } - } else - addr->sin_addr.s_addr=INADDR_ANY; - return true; -} - -static int http_read_response(char*& response, size_t& response_size, int sock, bool fail_on_status_ne_200){ - response=(char*)pa_malloc_atomic(1/*terminator*/); // setting memory block type - response[(response_size=0)]=0; - int result=0; - char* EOLat=0; - while(true) { - char buf[MAX_STRING*10]; - ssize_t received_size=recv(sock, buf, sizeof(buf), 0); - if(received_size<=0) - break; - response=(char*)pa_realloc(response, response_size+received_size+1/*terminator*/); - memcpy(response+response_size, buf, received_size); - response_size+=received_size; - response[response_size]=0; - - if(!result && (EOLat=strstr(response, "\r"))) { // checking status in first response - const String status_line(pa_strdup(response, EOLat-response)); - ArrayString astatus; - size_t pos_after=0; - status_line.split(astatus, pos_after, " "); - const String& status_code=*astatus.get(astatus.count()>1?1:0); - 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", - 0, - "bad response from host - no status found (size=%u)", response_size); -} - -/* ********************** request *************************** */ - -#if defined(SIGALRM) && defined(HAVE_SIGSETJMP) && defined(HAVE_SIGLONGJMP) -# define PA_USE_ALARM -#endif - -#ifdef PA_USE_ALARM -static sigjmp_buf timeout_env; -static void timeout_handler(int sig){ - siglongjmp(timeout_env, 1); -} -#endif - -static int http_request(char*& response, size_t& response_size, - const char* host, int port, - const char* request, - int -#ifdef PA_USE_ALARM - timeout -#endif - , - bool fail_on_status_ne_200) { - if(!host) - throw Exception("http.host", - 0, - "zero hostname"); //never - -#ifdef PA_USE_ALARM - signal(SIGALRM, timeout_handler); -#endif - int sock=-1; -#ifdef PA_USE_ALARM - if(sigsetjmp(timeout_env, 1)) { - // stupid gcc [2.95.4] generated bad code - // which failed to handle sigsetjmp+throw: crashed inside of pre-throw code. - // rewritten simplier [though duplicating closesocket code] - if(sock>=0) - closesocket(sock); - throw Exception("http.timeout", - origin_string, - "timeout occured while retrieving document"); - return 0; // never - } else { - alarm(timeout); -#endif - try { - int result; - struct sockaddr_in dest; - - if(!set_addr(&dest, host, port)) - throw Exception("http.host", - 0, - "can not resolve hostname \"%s\"", host); - - if((sock=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP/*0*/))<0) - throw Exception("http.connect", - 0, - "can not make socket: %s (%d)", strerror(errno), errno); - if(connect(sock, (struct sockaddr *)&dest, sizeof(dest))) - throw Exception("http.connect", - 0, - "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", - 0, - "error sending request: %s (%d)", strerror(errno), errno); - - result=http_read_response(response, response_size, sock, fail_on_status_ne_200); - closesocket(sock); -#ifdef PA_USE_ALARM - alarm(0); -#endif - return result; - } catch(...) { -#ifdef PA_USE_ALARM - alarm(0); -#endif - if(sock>=0) - closesocket(sock); - rethrow; - } -#ifdef PA_USE_ALARM - } -#endif -} - -#ifndef DOXYGEN -struct Http_pass_header_info { - Request_charsets* charsets; - 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 <charsets->source(), String::CC_UPPER)=="USER-AGENT") - info->user_agent_specified=true; -} - - -static Charset* detect_charset(Charset& source_charset, const String& content_type_value) { - const String::Body CONTENT_TYPE_VALUE= - content_type_value.change_case(source_charset, String::CC_UPPER); - // content-type: xxx/xxx; source_charset=WE-NEED-THIS - // content-type: xxx/xxx; source_charset="WE-NEED-THIS" - // content-type: xxx/xxx; source_charset="WE-NEED-THIS"; - size_t before_charseteq_pos=CONTENT_TYPE_VALUE.pos("CHARSET="); - if(before_charseteq_pos!=STRING_NOT_FOUND) { - size_t charset_begin=before_charseteq_pos+8/*CHARSET="*/; - size_t open_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin); - bool quoted=open_quote_pos==charset_begin; - if(quoted) - charset_begin++; // skip opening '"' - size_t charset_end=CONTENT_TYPE_VALUE.length(); - if(quoted) { - size_t close_quote_pos=CONTENT_TYPE_VALUE.pos('"', charset_begin); - if(close_quote_pos!=STRING_NOT_FOUND) - charset_end=close_quote_pos; - } else { - size_t delim_pos=CONTENT_TYPE_VALUE.pos(';', charset_begin); - if(delim_pos!=STRING_NOT_FOUND) - charset_end=delim_pos; - } - const String::Body CHARSET_NAME_BODY= - CONTENT_TYPE_VALUE.mid(charset_begin, charset_end); - - return &charsets.get(CHARSET_NAME_BODY); - } - - return 0; -} - -static const String* basic_authorization_field(const char* user, const char* pass) { - if(!user&& !pass) - return 0; - - String combined; - if(user) - combined<key, *row->get(0), info->result); -} -static void form_value2string( - HashStringValue::key_type key, - HashStringValue::value_type value, - String* result) -{ - if(const String* svalue=value->get_string()) - form_string_value2string(key, *svalue, *result); - else if(Table* tvalue=value->get_table()) { - Form_table_value2string_info info(key, *result); - tvalue->for_each(form_table_value2string, &info); - } else - throw Exception(0, - new String(key, String::L_TAINTED), - "is %s, "HTTP_FORM_NAME" option value must either string or table", value->type()); -} -static const char* form2string(HashStringValue& form) { - String string; - form.for_each(form_value2string, &string); - return string.cstr(String::L_UNSPECIFIED); -} -#ifndef DOXYGEN -struct File_read_http_result { - char *str; size_t length; - HashStringValue* headers; -}; -#endif -/// @todo build .cookies field. use ^file.tables.SET-COOKIES.menu{ for now -static File_read_http_result file_read_http(Request_charsets& charsets, - const String& file_spec, - bool as_text, - HashStringValue *options=0) { - File_read_http_result result; - char host[MAX_STRING]; - const char* uri; - int port; - const char* method="GET"; bool method_is_get; - HashStringValue* form=0; - const char* body_cstr=0; - int timeout=2; - bool fail_on_status_ne_200=true; - Value* vheaders=0; - Charset *asked_remote_charset=0; - const char* user_cstr=0; - const char* password_cstr=0; - - if(options) { - int valid_options=0; - if(Value* vmethod=options->get(HTTP_METHOD_NAME)) { - valid_options++; - method=vmethod->as_string().cstr(); - } - if(Value* vform=options->get(HTTP_FORM_NAME)) { - valid_options++; - form=vform->get_hash(); - } - if(Value* vbody=options->get(HTTP_BODY_NAME)) { - valid_options++; - body_cstr=vbody->as_string().cstr(String::L_UNSPECIFIED); - } - if(Value* vtimeout=options->get(HTTP_TIMEOUT_NAME)) { - valid_options++; - timeout=vtimeout->as_int(); - } - if((vheaders=options->get(HTTP_HEADERS_NAME))) { - valid_options++; - } - if(Value* vany_status=options->get(HTTP_ANY_STATUS_NAME)) { - valid_options++; - fail_on_status_ne_200=!vany_status->as_bool(); - } - if(Value* vcharset_name=options->get(HTTP_CHARSET_NAME)) { - valid_options++; - asked_remote_charset=&::charsets.get(vcharset_name->as_string(). - change_case(charsets.source(), String::CC_UPPER)); - } - if(Value* vuser=options->get(HTTP_USER)) { - valid_options++; - user_cstr=vuser->as_string().cstr(); - } - if(Value* vpassword=options->get(HTTP_PASSWORD)) { - valid_options++; - password_cstr=vpassword->as_string().cstr(); - } - - if(valid_options!=options->count()) - throw Exception("parser.runtime", - 0, - "invalid option passed"); - } - if(!asked_remote_charset) // defaulting to $request:charset - asked_remote_charset=&charsets.source(); - - method_is_get=strcmp(method, "GET")==0; - if(method_is_get && body_cstr) - throw Exception("parser.runtime", - 0, - "you can not use $."HTTP_BODY_NAME" option with method GET"); - - //preparing request - String& connect_string=*new String; - // not in ^sql{... L_SQL ...} spirit, but closer to ^file::load one - connect_string.append(file_spec, String::L_URI); // tainted pieces -> URI pieces - - String request_head_and_body; - { - // influence URLencoding of tainted pieces to String::L_URI lang - Temp_client_charset temp(charsets, *asked_remote_charset); - - const char* connect_string_cstr=connect_string.cstr(String::L_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(strchr(uri, '?') && form) - throw Exception("parser.runtime", - 0, - "use either uri with ?params or $."HTTP_FORM_NAME" option"); - - //making request head - String head; - head << method; - head << " " << uri; - if(form) - if(method_is_get) - head << "?" << form2string(*form); - head <<" HTTP/1.0" CRLF - "host: "<< host << CRLF; - if(form && !method_is_get) { - head << "content-type: application/x-www-form-urlencoded" CRLF; - body_cstr = form2string(*form); - } - - // http://www.ietf.org/rfc/rfc2617.txt - if(const String* authorization_field_value=basic_authorization_field(user_cstr, password_cstr)) - head<<"authorization: "<<*authorization_field_value<is_string()) { // allow empty - if(HashStringValue *headers=vheaders->get_hash()) { - Http_pass_header_info info={&charsets, &head, false}; - 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 - head << "user-agent: " DEFAULT_USER_AGENT CRLF; - - if(body_cstr) { - // recode those pieces which are not in String::L_URI lang - // [those violating HTTP standard, but widly used] - body_cstr=Charset::transcode( - String::C(body_cstr, strlen(body_cstr)), - charsets.source(), - *asked_remote_charset); - - head << "content-length: " << format(strlen(body_cstr), "%u") << CRLF; - } - - const char* head_cstr=head.cstr(String::L_UNSPECIFIED); - - // recode those pieces which are not in String::L_URI lang - // [those violating HTTP standard, but widly used] - head_cstr=Charset::transcode( - String::C(head_cstr, strlen(head_cstr)), - charsets.source(), - *asked_remote_charset); - - // head + end of header - request_head_and_body << head_cstr << CRLF; - // body - if(body_cstr) - request_head_and_body << body_cstr; - } - - //sending request - char* response; - size_t response_size; - int status_code=http_request(response, response_size, - host, port, request_head_and_body.cstr(), - timeout, fail_on_status_ne_200); - - //processing results - char* raw_body; size_t raw_body_size; - char* headers_end_at=strstr(response, "\n\n" /*change '2' below along!*/); - if(headers_end_at) - raw_body=headers_end_at+2; - else { - headers_end_at=strstr(response, CRLF CRLF /*change '4' below along!*/); - if(headers_end_at) - raw_body=headers_end_at+4; - else { - // yandex web server (http://localhost:17000) - // returns "\n\r\n" - headers_end_at=strstr(response, "\n\r\n" /*change '3' below along!*/); - if(!headers_end_at) - throw Exception("http.response", - &connect_string, - "bad response from host - no headers found"); - - raw_body=headers_end_at+3; - } - } - raw_body_size=response_size-(raw_body-response); - - *headers_end_at=0; - const String header_block(response, headers_end_at-response, true); - - ArrayString aheaders; - result.headers=new HashStringValue; - VHash* vtables=new VHash; - result.headers->put(HTTP_TABLES_NAME, vtables); - HashStringValue& tables=vtables->hash(); - - size_t pos_after=0; - header_block.split(aheaders, pos_after, CRLF); - - //processing headers - size_t aheaders_count=aheaders.count(); - Charset* real_remote_charset=0; // undetected, yet - for(size_t i=1; iget_table(); - } else { - // first appearence - Table::columns_type columns =new ArrayString(1); - *columns+=new String("value"); - table=new Table(columns); - } - // this string becomes next row - ArrayString& row=*new ArrayString(1); - row+=&header_value; - *table+=&row; - // not existed before? add it - if(!existed) - tables.put(HEADER_NAME, new VTable(table)); - } - - result.headers->put(HEADER_NAME, new VString(header_value)); - } - // defaulting to used-asked charset [it's never empty!] - if(!real_remote_charset) - real_remote_charset=asked_remote_charset; - - // output response - String::C real_body=String::C(raw_body, raw_body_size); - if(as_text && raw_body_size) // must be checked because transcode returns CONST string in case length==0, which contradicts hacking few lines below - real_body=Charset::transcode(real_body, *real_remote_charset, charsets.source()); - - result.str=const_cast(real_body.str); // hacking a little - result.length=real_body.length; - result.headers->put(file_status_name, new VInt(status_code)); + int result=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++; return result; } -#endif - #ifndef DOXYGEN struct File_read_action_info { char **data; size_t *data_size; @@ -685,11 +144,9 @@ static void file_read_action( "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=new(PointerFreeGC) char[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; } @@ -699,29 +156,33 @@ File_read_result file_read(Request_chars bool fail_on_read_problem, char* buf, size_t offset, size_t count) { File_read_result result={false, 0, 0, 0}; -#ifdef PA_HTTP 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=file_read_http(charsets, file_spec, as_text, params); + File_read_http_result http=pa_internal_file_read_http(charsets, file_spec, as_text, params); result.success=true; result.str=http.str; result.length=http.length; result.headers=http.headers; } else { -#endif - if(params && params->count()) - throw Exception("parser.runtime", - 0, - "invalid option passed"); + 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"); + } 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); -#ifdef PA_HTTP } -#endif if(result.success && as_text) { // UTF-8 signature: EF BB BF @@ -810,7 +271,7 @@ bool file_read_action_under_lock(const S } } -static void create_dir_for_file(const String& file_spec) { +void create_dir_for_file(const String& file_spec) { size_t pos_after=1; size_t pos_before; while((pos_before=file_spec.pos('/', pos_after))!=STRING_NOT_FOUND) { @@ -969,17 +430,17 @@ static bool entry_readable(const String& } return false; } -bool file_readable(const String& file_spec) { +bool file_exist(const String& file_spec) { return entry_readable(file_spec, false); } -bool dir_readable(const String& file_spec) { +bool dir_exists(const String& file_spec) { return entry_readable(file_spec, true); } -const String* file_readable(const String& path, const String& name) { +const String* file_exist(const String& path, const String& name) { String& result=*new String(path); result << "/"; result << name; - return file_readable(result)?&result:0; + return file_exist(result)?&result:0; } bool file_executable(const String& file_spec) { return access(file_spec.cstr(String::L_FILE_SPEC), X_OK)==0; @@ -1092,11 +553,11 @@ char* unescape_chars(const char* cp, int EscapeFirst, EscapeSecond } escapeState=EscapeRest; - int escapedValue=0; + uint escapedValue=0; int srcPos=0; int dstPos=0; while(srcPos < len) { - int ch=cp[srcPos]; + uchar ch=(uchar)cp[srcPos]; switch(escapeState) { case EscapeRest: if(ch=='%') { @@ -1108,12 +569,12 @@ char* unescape_chars(const char* cp, int } break; case EscapeFirst: - escapedValue=hex_value[ch] << 4; + escapedValue=hex_value[ch] << 4; escapeState=EscapeSecond; break; case EscapeSecond: escapedValue +=hex_value[ch]; - s[dstPos++]=escapedValue; + s[dstPos++]=(char)escapedValue; escapeState=EscapeRest; break; } @@ -1166,9 +627,9 @@ static bool isLeap(int year) { } int getMonthDays(int year, int month) { - int monthDays[]={ + static int monthDays[]={ 31, - isLeap(year) ? 29 : 28, + 28, 31, 30, 31, @@ -1180,7 +641,7 @@ int getMonthDays(int year, int month) { 30, 31 }; - return monthDays[month]; + return (month == 2 && isLeap(year)) ? 29 : monthDays[month]; } void remove_crlf(char* start, char* end) { @@ -1348,7 +809,7 @@ g_mime_utils_base64_encode_step (const u case 2: *saveout++ = *inptr++; case 1: *saveout++ = *inptr++; } - ((char *)save)[0] += inlen; + *(char *)save = *(char *)save+(char)inlen; } /*d(printf ("mode = %d\nc1 = %c\nc2 = %c\n", @@ -1407,18 +868,197 @@ g_mime_utils_base64_encode_close (const return (outptr - out); } -char* pa_base64(const char *in, size_t len) +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[len * 2 + 6]; + 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, len, + g_mime_utils_base64_encode_close ((const unsigned char*)in, in_size, (unsigned char*)result, &state, &save); - assert(filled <= len * 2 + 6); + 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(0, + 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 < in_size; i++) CalcCrc32(in[i], crc32); + + return ~crc32; +} + +const unsigned long pa_crc32(const String& file_spec) +{ + unsigned long crc32=0xFFFFFFFF; + file_read_action_under_lock(file_spec, "crc32", file_crc32_file_action, &crc32); + return ~crc32; +} + +static void file_crc32_file_action( + struct stat& finfo, + int f, + const String&, const char* /*fname*/, bool, + void *context) +{ + unsigned long& crc32=*static_cast(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); + } +} +