X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/ce105e87404c53c09b8f9af4f76736b50458f0c7..bbd8308cc01941e51e2cbcf88168a5560abe6042:/apt-pkg/contrib/strutl.cc diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc index 0ac587a9e..7b6bb2854 100644 --- a/apt-pkg/contrib/strutl.cc +++ b/apt-pkg/contrib/strutl.cc @@ -21,16 +21,19 @@ #include #include +#include +#include +#include +#include +#include +#include + #include #include #include -#include -#include #include #include -#include #include -#include #include #include #include @@ -71,14 +74,14 @@ bool Endswith(const std::string &s, const std::string &end) { if (end.size() > s.size()) return false; - return (s.substr(s.size() - end.size(), s.size()) == end); + return (s.compare(s.size() - end.size(), end.size(), end) == 0); } bool Startswith(const std::string &s, const std::string &start) { if (start.size() > s.size()) return false; - return (s.substr(0, start.size()) == start); + return (s.compare(0, start.size(), start) == 0); } } @@ -324,21 +327,19 @@ bool ParseCWord(const char *&String,string &Res) /* */ string QuoteString(const string &Str, const char *Bad) { - string Res; + std::stringstream Res; for (string::const_iterator I = Str.begin(); I != Str.end(); ++I) { - if (strchr(Bad,*I) != 0 || isprint(*I) == 0 || + if (strchr(Bad,*I) != 0 || isprint(*I) == 0 || *I == 0x25 || // percent '%' char *I <= 0x20 || *I >= 0x7F) // control chars { - char Buf[10]; - sprintf(Buf,"%%%02x",(int)*I); - Res += Buf; + ioprintf(Res, "%%%02hhx", *I); } else - Res += *I; + Res << *I; } - return Res; + return Res.str(); } /*}}}*/ // DeQuoteString - Convert a string from quoted from /*{{{*/ @@ -379,13 +380,12 @@ string DeQuoteString(string::const_iterator const &begin, YottaBytes (E24) */ string SizeToStr(double Size) { - char S[300]; double ASize; if (Size >= 0) ASize = Size; else ASize = -1*Size; - + /* bytes, KiloBytes, MegaBytes, GigaBytes, TeraBytes, PetaBytes, ExaBytes, ZettaBytes, YottaBytes */ char Ext[] = {'\0','k','M','G','T','P','E','Z','Y'}; @@ -394,20 +394,21 @@ string SizeToStr(double Size) { if (ASize < 100 && I != 0) { - sprintf(S,"%'.1f %c",ASize,Ext[I]); - break; + std::string S; + strprintf(S, "%'.1f %c", ASize, Ext[I]); + return S; } - + if (ASize < 10000) { - sprintf(S,"%'.0f %c",ASize,Ext[I]); - break; + std::string S; + strprintf(S, "%'.0f %c", ASize, Ext[I]); + return S; } ASize /= 1000.0; I++; } - - return S; + return ""; } /*}}}*/ // TimeToStr - Convert the time into a string /*{{{*/ @@ -415,36 +416,27 @@ string SizeToStr(double Size) /* Converts a number of seconds to a hms format */ string TimeToStr(unsigned long Sec) { - char S[300]; - - while (1) + std::string S; + if (Sec > 60*60*24) { - if (Sec > 60*60*24) - { - //d means days, h means hours, min means minutes, s means seconds - sprintf(S,_("%lid %lih %limin %lis"),Sec/60/60/24,(Sec/60/60) % 24,(Sec/60) % 60,Sec % 60); - break; - } - - if (Sec > 60*60) - { - //h means hours, min means minutes, s means seconds - sprintf(S,_("%lih %limin %lis"),Sec/60/60,(Sec/60) % 60,Sec % 60); - break; - } - - if (Sec > 60) - { - //min means minutes, s means seconds - sprintf(S,_("%limin %lis"),Sec/60,Sec % 60); - break; - } - - //s means seconds - sprintf(S,_("%lis"),Sec); - break; + //TRANSLATOR: d means days, h means hours, min means minutes, s means seconds + strprintf(S,_("%lid %lih %limin %lis"),Sec/60/60/24,(Sec/60/60) % 24,(Sec/60) % 60,Sec % 60); + } + else if (Sec > 60*60) + { + //TRANSLATOR: h means hours, min means minutes, s means seconds + strprintf(S,_("%lih %limin %lis"),Sec/60/60,(Sec/60) % 60,Sec % 60); + } + else if (Sec > 60) + { + //TRANSLATOR: min means minutes, s means seconds + strprintf(S,_("%limin %lis"),Sec/60,Sec % 60); + } + else + { + //TRANSLATOR: s means seconds + strprintf(S,_("%lis"),Sec); } - return S; } /*}}}*/ @@ -475,7 +467,9 @@ string SubstVar(const string &Str,const string &Subst,const string &Contents) if (OldPos >= Str.length()) return Temp; - return Temp + string(Str,OldPos); + + Temp.append(Str, OldPos, string::npos); + return Temp; } string SubstVar(string Str,const struct SubstVar *Vars) { @@ -701,9 +695,9 @@ string LookupTag(const string &Message,const char *Tag,const char *Default) // Find the end of line and strip the leading/trailing spaces string::const_iterator J; I += Length + 1; - for (; isspace(*I) != 0 && I < Message.end(); ++I); + for (; isspace_ascii(*I) != 0 && I < Message.end(); ++I); for (J = I; *J != '\n' && J < Message.end(); ++J); - for (; J > I && isspace(J[-1]) != 0; --J); + for (; J > I && isspace_ascii(J[-1]) != 0; --J); return string(I,J); } @@ -755,20 +749,27 @@ int StringToBool(const string &Text,int Default) /* This converts a time_t into a string time representation that is year 2000 complient and timezone neutral */ string TimeRFC1123(time_t Date) +{ + return TimeRFC1123(Date, false); +} +string TimeRFC1123(time_t Date, bool const NumericTimezone) { struct tm Conv; if (gmtime_r(&Date, &Conv) == NULL) return ""; - char Buf[300]; - const char *Day[] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"}; - const char *Month[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul", - "Aug","Sep","Oct","Nov","Dec"}; - - snprintf(Buf, sizeof(Buf), "%s, %02i %s %i %02i:%02i:%02i GMT",Day[Conv.tm_wday], - Conv.tm_mday,Month[Conv.tm_mon],Conv.tm_year+1900,Conv.tm_hour, - Conv.tm_min,Conv.tm_sec); - return Buf; + auto const posix = std::locale("C.UTF-8"); + std::ostringstream datestr; + datestr.imbue(posix); + APT::StringView const fmt("%a, %d %b %Y %H:%M:%S"); + std::use_facet>(posix).put( + std::ostreambuf_iterator(datestr), + datestr, ' ', &Conv, fmt.data(), fmt.data() + fmt.size()); + if (NumericTimezone) + datestr << " +0000"; + else + datestr << " GMT"; + return datestr.str(); } /*}}}*/ // ReadMessages - Read messages from the FD /*{{{*/ @@ -799,7 +800,11 @@ bool ReadMessages(int Fd, vector &List) return false; // No data +#if EAGAIN != EWOULDBLOCK if (Res < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) +#else + if (Res < 0 && errno == EAGAIN) +#endif return true; if (Res < 0) return false; @@ -873,7 +878,7 @@ bool ReadMessages(int Fd, vector &List) // --------------------------------------------------------------------- /* This was lifted from the boa webserver which lifted it from 'wn-v1.07' Made it a bit more robust with a few tolower_ascii though. */ -static int MonthConv(char *Month) +static int MonthConv(char const * const Month) { switch (tolower_ascii(*Month)) { @@ -926,28 +931,98 @@ static time_t timegm(struct tm *t) } #endif /*}}}*/ -// FullDateToTime - Converts a HTTP1.1 full date strings into a time_t /*{{{*/ +// RFC1123StrToTime - Converts a HTTP1.1 full date strings into a time_t /*{{{*/ // --------------------------------------------------------------------- -/* tries to parses a full date as specified in RFC2616 Section 3.3.1 - with one exception: All timezones (%Z) are accepted but the protocol - says that it MUST be GMT, but this one is equal to UTC which we will - encounter from time to time (e.g. in Release files) so we accept all - here and just assume it is GMT (or UTC) later on */ +/* tries to parses a full date as specified in RFC7231 §7.1.1.1 + with one exception: HTTP/1.1 valid dates need to have GMT as timezone. + As we encounter dates from UTC or with a numeric timezone in other places, + we allow them here to to be able to reuse the method. Either way, a date + must be in UTC or parsing will fail. Previous implementations of this + method used to ignore the timezone and assume always UTC. */ bool RFC1123StrToTime(const char* const str,time_t &time) { - struct tm Tm; - setlocale (LC_ALL,"C"); - bool const invalid = - // Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123 - (strptime(str, "%a, %d %b %Y %H:%M:%S %Z", &Tm) == NULL && - // Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036 - strptime(str, "%A, %d-%b-%y %H:%M:%S %Z", &Tm) == NULL && - // Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format - strptime(str, "%a %b %d %H:%M:%S %Y", &Tm) == NULL); - setlocale (LC_ALL,""); - if (invalid == true) + unsigned short day = 0; + signed int year = 0; // yes, Y23K problem – we gonna worry then… + std::string weekday, month, datespec, timespec, zone; + std::istringstream ss(str); + auto const &posix = std::locale("C.UTF-8"); + ss.imbue(posix); + ss >> weekday; + // we only superficially check weekday, mostly to avoid accepting localized + // weekdays here and take only its length to decide which datetime format we + // encounter here. The date isn't stored. + std::transform(weekday.begin(), weekday.end(), weekday.begin(), ::tolower); + std::array c_weekdays = {{ "sun", "mon", "tue", "wed", "thu", "fri", "sat" }}; + if (std::find(c_weekdays.begin(), c_weekdays.end(), weekday.substr(0,3)) == c_weekdays.end()) + return false; + + switch (weekday.length()) + { + case 4: + // Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123 + if (weekday[3] != ',') + return false; + ss >> day >> month >> year >> timespec >> zone; + break; + case 3: + // Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format + ss >> month >> day >> timespec >> year; + zone = "UTC"; + break; + case 0: + case 1: + case 2: + return false; + default: + // Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036 + if (weekday[weekday.length() - 1] != ',') + return false; + ss >> datespec >> timespec >> zone; + auto const expldate = VectorizeString(datespec, '-'); + if (expldate.size() != 3) + return false; + try { + size_t pos; + day = std::stoi(expldate[0], &pos); + if (pos != expldate[0].length()) + return false; + year = 1900 + std::stoi(expldate[2], &pos); + if (pos != expldate[2].length()) + return false; + strprintf(datespec, "%.4d-%.2d-%.2d", year, MonthConv(expldate[1].c_str()) + 1, day); + } catch (...) { + return false; + } + break; + } + + if (ss.fail() || ss.bad() || !ss.eof()) return false; + if (zone != "GMT" && zone != "UTC" && zone != "Z") // RFC 822 + { + // numeric timezones as a should of RFC 1123 and generally preferred + try { + size_t pos; + auto const z = std::stoi(zone, &pos); + if (z != 0 || pos != zone.length()) + return false; + } catch (...) { + return false; + } + } + + if (datespec.empty()) + { + if (month.empty()) + return false; + strprintf(datespec, "%.4d-%.2d-%.2d", year, MonthConv(month.c_str()) + 1, day); + } + + std::string const datetime = datespec + ' ' + timespec; + struct tm Tm; + if (strptime(datetime.c_str(), "%Y-%m-%d %H:%M:%S", &Tm) == nullptr) + return false; time = timegm(&Tm); return true; } @@ -1117,26 +1192,36 @@ static int HexDigit(int c) return c - 'a' + 10; if (c >= 'A' && c <= 'F') return c - 'A' + 10; - return 0; + return -1; } /*}}}*/ // Hex2Num - Convert a long hex number into a buffer /*{{{*/ // --------------------------------------------------------------------- /* The length of the buffer must be exactly 1/2 the length of the string. */ bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length) +{ + return Hex2Num(APT::StringView(Str), Num, Length); +} + +bool Hex2Num(const APT::StringView Str,unsigned char *Num,unsigned int Length) { if (Str.length() != Length*2) return false; // Convert each digit. We store it in the same order as the string int J = 0; - for (string::const_iterator I = Str.begin(); I != Str.end();J++, I += 2) + for (auto I = Str.begin(); I != Str.end();J++, I += 2) { - if (isxdigit(*I) == 0 || isxdigit(I[1]) == 0) + int first_half = HexDigit(I[0]); + int second_half; + if (first_half < 0) return false; - Num[J] = HexDigit(I[0]) << 4; - Num[J] += HexDigit(I[1]); + second_half = HexDigit(I[1]); + if (second_half < 0) + return false; + Num[J] = first_half << 4; + Num[J] += second_half; } return true; @@ -1212,7 +1297,7 @@ vector StringSplit(std::string const &s, std::string const &sep, vector split; size_t start, pos; - // no seperator given, this is bogus + // no separator given, this is bogus if(sep.size() == 0) return split; @@ -1319,7 +1404,7 @@ void ioprintf(ostream &out,const char *format,...) va_list args; ssize_t size = 400; while (true) { - bool ret = false; + bool ret; va_start(args,format); ret = iovprintf(out, format, args, size); va_end(args); @@ -1333,7 +1418,7 @@ void strprintf(string &out,const char *format,...) ssize_t size = 400; std::ostringstream outstr; while (true) { - bool ret = false; + bool ret; va_start(args,format); ret = iovprintf(outstr, format, args, size); va_end(args); @@ -1375,17 +1460,32 @@ string StripEpoch(const string &VerStr) return VerStr.substr(i+1); } /*}}}*/ + // tolower_ascii - tolower() function that ignores the locale /*{{{*/ // --------------------------------------------------------------------- /* This little function is the most called method we have and tries therefore to do the absolut minimum - and is notable faster than standard tolower/toupper and as a bonus avoids problems with different locales - we only operate on ascii chars anyway. */ +#undef tolower_ascii +int tolower_ascii(int const c) APT_CONST APT_COLD; int tolower_ascii(int const c) { - if (c >= 'A' && c <= 'Z') - return c + 32; - return c; + return tolower_ascii_inline(c); +} + /*}}}*/ + +// isspace_ascii - isspace() function that ignores the locale /*{{{*/ +// --------------------------------------------------------------------- +/* This little function is one of the most called methods we have and tries + therefore to do the absolut minimum - and is notable faster than + standard isspace() and as a bonus avoids problems with different + locales - we only operate on ascii chars anyway. */ +#undef isspace_ascii +int isspace_ascii(int const c) APT_CONST APT_COLD; +int isspace_ascii(int const c) +{ + return isspace_ascii_inline(c); } /*}}}*/ @@ -1423,7 +1523,7 @@ size_t strv_length(const char **str_array) ; return i; } - + /*}}}*/ // DeEscapeString - unescape (\0XX and \xXX) from a string /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -1605,56 +1705,49 @@ void URI::CopyFrom(const string &U) /* */ URI::operator string() { - string Res; - + std::stringstream Res; + if (Access.empty() == false) - Res = Access + ':'; - + Res << Access << ':'; + if (Host.empty() == false) - { + { if (Access.empty() == false) - Res += "//"; - + Res << "//"; + if (User.empty() == false) { // FIXME: Technically userinfo is permitted even less // characters than these, but this is not conveniently // expressed with a blacklist. - Res += QuoteString(User, ":/?#[]@"); + Res << QuoteString(User, ":/?#[]@"); if (Password.empty() == false) - Res += ":" + QuoteString(Password, ":/?#[]@"); - Res += "@"; + Res << ":" << QuoteString(Password, ":/?#[]@"); + Res << "@"; } - + // Add RFC 2732 escaping characters - if (Access.empty() == false && - (Host.find('/') != string::npos || Host.find(':') != string::npos)) - Res += '[' + Host + ']'; + if (Access.empty() == false && Host.find_first_of("/:") != string::npos) + Res << '[' << Host << ']'; else - Res += Host; - + Res << Host; + if (Port != 0) - { - char S[30]; - sprintf(S,":%u",Port); - Res += S; - } + Res << ':' << std::to_string(Port); } - + if (Path.empty() == false) { if (Path[0] != '/') - Res += "/" + Path; + Res << "/" << Path; else - Res += Path; + Res << Path; } - - return Res; + + return Res.str(); } /*}}}*/ // URI::SiteOnly - Return the schema and site for the URI /*{{{*/ -// --------------------------------------------------------------------- -/* */ string URI::SiteOnly(const string &URI) { ::URI U(URI); @@ -1664,9 +1757,18 @@ string URI::SiteOnly(const string &URI) return U; } /*}}}*/ +// URI::ArchiveOnly - Return the schema, site and cleaned path for the URI /*{{{*/ +string URI::ArchiveOnly(const string &URI) +{ + ::URI U(URI); + U.User.clear(); + U.Password.clear(); + if (U.Path.empty() == false && U.Path[U.Path.length() - 1] == '/') + U.Path.erase(U.Path.length() - 1); + return U; +} + /*}}}*/ // URI::NoUserPassword - Return the schema, site and path for the URI /*{{{*/ -// --------------------------------------------------------------------- -/* */ string URI::NoUserPassword(const string &URI) { ::URI U(URI);