// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ /* ###################################################################### Configuration Class This class provides a configuration file and command line parser for a tree-oriented configuration environment. All runtime configuration is stored in here. This source is placed in the Public Domain, do with it what you will It was originally written by Jason Gunthorpe . ##################################################################### */ /*}}}*/ // Include files /*{{{*/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; /*}}}*/ Configuration *_config = new Configuration; /* TODO: This config verification shouldn't be using a static variable but a Cnf-member – but that would need ABI breaks and stuff and for now that really is an apt-dev-only tool, so it isn't that bad that it is unusable and allaround a bit strange */ enum class APT_HIDDEN ConfigType { UNDEFINED, INT, BOOL, STRING, STRING_OR_BOOL, STRING_OR_LIST, FILE, DIR, LIST, PROGRAM_PATH = FILE }; APT_HIDDEN std::unordered_map apt_known_config {}; static std::string getConfigTypeString(ConfigType const type) /*{{{*/ { switch (type) { case ConfigType::UNDEFINED: return "UNDEFINED"; case ConfigType::INT: return "INT"; case ConfigType::BOOL: return "BOOL"; case ConfigType::STRING: return "STRING"; case ConfigType::STRING_OR_BOOL: return "STRING_OR_BOOL"; case ConfigType::FILE: return "FILE"; case ConfigType::DIR: return "DIR"; case ConfigType::LIST: return "LIST"; case ConfigType::STRING_OR_LIST: return "STRING_OR_LIST"; } return "UNKNOWN"; } /*}}}*/ static ConfigType getConfigType(std::string const &type) /*{{{*/ { if (type == "") return ConfigType::INT; else if (type == "") return ConfigType::BOOL; else if (type == "") return ConfigType::STRING; else if (type == "") return ConfigType::STRING_OR_BOOL; else if (type == "") return ConfigType::FILE; else if (type == "") return ConfigType::DIR; else if (type == "") return ConfigType::LIST; else if (type == "") return ConfigType::STRING_OR_LIST; else if (type == "") return ConfigType::PROGRAM_PATH; return ConfigType::UNDEFINED; } /*}}}*/ // checkFindConfigOptionType - workhorse of option checking /*{{{*/ static void checkFindConfigOptionTypeInternal(std::string name, ConfigType const type) { std::transform(name.begin(), name.end(), name.begin(), ::tolower); auto known = apt_known_config.find(name); if (known == apt_known_config.cend()) { auto const rcolon = name.rfind(':'); if (rcolon != std::string::npos) { known = apt_known_config.find(name.substr(0, rcolon) + ":*"); if (known == apt_known_config.cend()) { auto const parts = StringSplit(name, "::"); size_t psize = parts.size(); if (psize > 1) { for (size_t max = psize; max != 1; --max) { std::ostringstream os; std::copy(parts.begin(), parts.begin() + max, std::ostream_iterator(os, "::")); os << "**"; known = apt_known_config.find(os.str()); if (known != apt_known_config.cend() && known->second == ConfigType::UNDEFINED) return; } for (size_t max = psize - 1; max != 1; --max) { std::ostringstream os; std::copy(parts.begin(), parts.begin() + max - 1, std::ostream_iterator(os, "::")); os << "*::"; std::copy(parts.begin() + max + 1, parts.end() - 1, std::ostream_iterator(os, "::")); os << *(parts.end() - 1); known = apt_known_config.find(os.str()); if (known != apt_known_config.cend()) break; } } } } } if (known == apt_known_config.cend()) _error->Warning("Using unknown config option »%s« of type %s", name.c_str(), getConfigTypeString(type).c_str()); else if (known->second != type) { if (known->second == ConfigType::DIR && type == ConfigType::FILE) ; // implementation detail else if (type == ConfigType::STRING && (known->second == ConfigType::FILE || known->second == ConfigType::DIR)) ; // TODO: that might be an error or not, we will figure this out later else if (known->second == ConfigType::STRING_OR_BOOL && (type == ConfigType::BOOL || type == ConfigType::STRING)) ; else if (known->second == ConfigType::STRING_OR_LIST && (type == ConfigType::LIST || type == ConfigType::STRING)) ; else _error->Warning("Using config option »%s« of type %s as a type %s", name.c_str(), getConfigTypeString(known->second).c_str(), getConfigTypeString(type).c_str()); } } static void checkFindConfigOptionType(char const * const name, ConfigType const type) { if (apt_known_config.empty()) return; checkFindConfigOptionTypeInternal(name, type); } /*}}}*/ static bool LoadConfigurationIndex(std::string const &filename) /*{{{*/ { apt_known_config.clear(); if (filename.empty()) return true; Configuration Idx; if (ReadConfigFile(Idx, filename) == false) return false; Configuration::Item const * Top = Idx.Tree(nullptr); if (unlikely(Top == nullptr)) return false; do { if (Top->Value.empty() == false) { std::string fulltag = Top->FullTag(); std::transform(fulltag.begin(), fulltag.end(), fulltag.begin(), ::tolower); apt_known_config.emplace(std::move(fulltag), getConfigType(Top->Value)); } if (Top->Child != nullptr) { Top = Top->Child; continue; } while (Top != nullptr && Top->Next == nullptr) Top = Top->Parent; if (Top != nullptr) Top = Top->Next; } while (Top != nullptr); return true; } /*}}}*/ // Configuration::Configuration - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ Configuration::Configuration() : ToFree(true) { Root = new Item; } Configuration::Configuration(const Item *Root) : Root((Item *)Root), ToFree(false) { } /*}}}*/ // Configuration::~Configuration - Destructor /*{{{*/ // --------------------------------------------------------------------- /* */ Configuration::~Configuration() { if (ToFree == false) return; Item *Top = Root; for (; Top != 0;) { if (Top->Child != 0) { Top = Top->Child; continue; } while (Top != 0 && Top->Next == 0) { Item *Parent = Top->Parent; delete Top; Top = Parent; } if (Top != 0) { Item *Next = Top->Next; delete Top; Top = Next; } } } /*}}}*/ // Configuration::Lookup - Lookup a single item /*{{{*/ // --------------------------------------------------------------------- /* This will lookup a single item by name below another item. It is a helper function for the main lookup function */ Configuration::Item *Configuration::Lookup(Item *Head,const char *S, unsigned long const &Len,bool const &Create) { int Res = 1; Item *I = Head->Child; Item **Last = &Head->Child; // Empty strings match nothing. They are used for lists. if (Len != 0) { for (; I != 0; Last = &I->Next, I = I->Next) if (Len == I->Tag.length() && (Res = stringcasecmp(I->Tag,S,S + Len)) == 0) break; } else for (; I != 0; Last = &I->Next, I = I->Next); if (Res == 0) return I; if (Create == false) return 0; I = new Item; I->Tag.assign(S,Len); I->Next = *Last; I->Parent = Head; *Last = I; return I; } /*}}}*/ // Configuration::Lookup - Lookup a fully scoped item /*{{{*/ // --------------------------------------------------------------------- /* This performs a fully scoped lookup of a given name, possibly creating new items */ Configuration::Item *Configuration::Lookup(const char *Name,bool const &Create) { if (Name == 0) return Root->Child; const char *Start = Name; const char *End = Start + strlen(Name); const char *TagEnd = Name; Item *Itm = Root; for (; End - TagEnd >= 2; TagEnd++) { if (TagEnd[0] == ':' && TagEnd[1] == ':') { Itm = Lookup(Itm,Start,TagEnd - Start,Create); if (Itm == 0) return 0; TagEnd = Start = TagEnd + 2; } } // This must be a trailing ::, we create unique items in a list if (End - Start == 0) { if (Create == false) return 0; } Itm = Lookup(Itm,Start,End - Start,Create); return Itm; } /*}}}*/ // Configuration::Find - Find a value /*{{{*/ // --------------------------------------------------------------------- /* */ string Configuration::Find(const char *Name,const char *Default) const { checkFindConfigOptionType(Name, ConfigType::STRING); const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) { if (Default == 0) return ""; else return Default; } return Itm->Value; } /*}}}*/ // Configuration::FindFile - Find a Filename /*{{{*/ // --------------------------------------------------------------------- /* Directories are stored as the base dir in the Parent node and the sub directory in sub nodes with the final node being the end filename */ string Configuration::FindFile(const char *Name,const char *Default) const { checkFindConfigOptionType(Name, ConfigType::FILE); const Item *RootItem = Lookup("RootDir"); std::string result = (RootItem == 0) ? "" : RootItem->Value; if(result.empty() == false && result[result.size() - 1] != '/') result.push_back('/'); const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) { if (Default != 0) result.append(Default); } else { string val = Itm->Value; while (Itm->Parent != 0) { if (Itm->Parent->Value.empty() == true) { Itm = Itm->Parent; continue; } // Absolute if (val.length() >= 1 && val[0] == '/') { if (val.compare(0, 9, "/dev/null") == 0) val.erase(9); break; } // ~/foo or ./foo if (val.length() >= 2 && (val[0] == '~' || val[0] == '.') && val[1] == '/') break; // ../foo if (val.length() >= 3 && val[0] == '.' && val[1] == '.' && val[2] == '/') break; if (Itm->Parent->Value.end()[-1] != '/') val.insert(0, "/"); val.insert(0, Itm->Parent->Value); Itm = Itm->Parent; } result.append(val); } return flNormalize(result); } /*}}}*/ // Configuration::FindDir - Find a directory name /*{{{*/ // --------------------------------------------------------------------- /* This is like findfile execept the result is terminated in a / */ string Configuration::FindDir(const char *Name,const char *Default) const { checkFindConfigOptionType(Name, ConfigType::DIR); string Res = FindFile(Name,Default); if (Res.end()[-1] != '/') { size_t const found = Res.rfind("/dev/null"); if (found != string::npos && found == Res.size() - 9) return Res; // /dev/null returning return Res + '/'; } return Res; } /*}}}*/ // Configuration::FindVector - Find a vector of values /*{{{*/ // --------------------------------------------------------------------- /* Returns a vector of config values under the given item */ vector Configuration::FindVector(const char *Name, std::string const &Default, bool const Keys) const { checkFindConfigOptionType(Name, ConfigType::LIST); vector Vec; const Item *Top = Lookup(Name); if (Top == NULL) return VectorizeString(Default, ','); if (Top->Value.empty() == false) return VectorizeString(Top->Value, ','); Item *I = Top->Child; while(I != NULL) { Vec.push_back(Keys ? I->Tag : I->Value); I = I->Next; } if (Vec.empty() == true) return VectorizeString(Default, ','); return Vec; } /*}}}*/ // Configuration::FindI - Find an integer value /*{{{*/ // --------------------------------------------------------------------- /* */ int Configuration::FindI(const char *Name,int const &Default) const { checkFindConfigOptionType(Name, ConfigType::INT); const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) return Default; char *End; int Res = strtol(Itm->Value.c_str(),&End,0); if (End == Itm->Value.c_str()) return Default; return Res; } /*}}}*/ // Configuration::FindB - Find a boolean type /*{{{*/ // --------------------------------------------------------------------- /* */ bool Configuration::FindB(const char *Name,bool const &Default) const { checkFindConfigOptionType(Name, ConfigType::BOOL); const Item *Itm = Lookup(Name); if (Itm == 0 || Itm->Value.empty() == true) return Default; return StringToBool(Itm->Value,Default); } /*}}}*/ // Configuration::FindAny - Find an arbitrary type /*{{{*/ // --------------------------------------------------------------------- /* a key suffix of /f, /d, /b or /i calls Find{File,Dir,B,I} */ string Configuration::FindAny(const char *Name,const char *Default) const { string key = Name; char type = 0; if (key.size() > 2 && key.end()[-2] == '/') { type = key.end()[-1]; key.resize(key.size() - 2); } switch (type) { // file case 'f': return FindFile(key.c_str(), Default); // directory case 'd': return FindDir(key.c_str(), Default); // bool case 'b': return FindB(key, Default) ? "true" : "false"; // int case 'i': { char buf[16]; snprintf(buf, sizeof(buf)-1, "%d", FindI(key, Default ? atoi(Default) : 0 )); return buf; } } // fallback return Find(Name, Default); } /*}}}*/ // Configuration::CndSet - Conditinal Set a value /*{{{*/ // --------------------------------------------------------------------- /* This will not overwrite */ void Configuration::CndSet(const char *Name,const string &Value) { Item *Itm = Lookup(Name,true); if (Itm == 0) return; if (Itm->Value.empty() == true) Itm->Value = Value; } /*}}}*/ // Configuration::Set - Set an integer value /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::CndSet(const char *Name,int const Value) { Item *Itm = Lookup(Name,true); if (Itm == 0 || Itm->Value.empty() == false) return; char S[300]; snprintf(S,sizeof(S),"%i",Value); Itm->Value = S; } /*}}}*/ // Configuration::Set - Set a value /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::Set(const char *Name,const string &Value) { Item *Itm = Lookup(Name,true); if (Itm == 0) return; Itm->Value = Value; } /*}}}*/ // Configuration::Set - Set an integer value /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::Set(const char *Name,int const &Value) { Item *Itm = Lookup(Name,true); if (Itm == 0) return; char S[300]; snprintf(S,sizeof(S),"%i",Value); Itm->Value = S; } /*}}}*/ // Configuration::Clear - Clear an single value from a list /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::Clear(string const &Name, int const &Value) { char S[300]; snprintf(S,sizeof(S),"%i",Value); Clear(Name, S); } /*}}}*/ // Configuration::Clear - Clear an single value from a list /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::Clear(string const &Name, string const &Value) { Item *Top = Lookup(Name.c_str(),false); if (Top == 0 || Top->Child == 0) return; Item *Tmp, *Prev, *I; Prev = I = Top->Child; while(I != NULL) { if(I->Value == Value) { Tmp = I; // was first element, point parent to new first element if(Top->Child == Tmp) Top->Child = I->Next; I = I->Next; Prev->Next = I; delete Tmp; } else { Prev = I; I = I->Next; } } } /*}}}*/ // Configuration::Clear - Clear everything /*{{{*/ // --------------------------------------------------------------------- void Configuration::Clear() { const Configuration::Item *Top = Tree(0); while( Top != 0 ) { Clear(Top->FullTag()); Top = Top->Next; } } /*}}}*/ // Configuration::Clear - Clear an entire tree /*{{{*/ // --------------------------------------------------------------------- /* */ void Configuration::Clear(string const &Name) { Item *Top = Lookup(Name.c_str(),false); if (Top == 0) return; Top->Value.clear(); Item *Stop = Top; Top = Top->Child; Stop->Child = 0; for (; Top != 0;) { if (Top->Child != 0) { Top = Top->Child; continue; } while (Top != 0 && Top->Next == 0) { Item *Tmp = Top; Top = Top->Parent; delete Tmp; if (Top == Stop) return; } Item *Tmp = Top; if (Top != 0) Top = Top->Next; delete Tmp; } } /*}}}*/ void Configuration::MoveSubTree(char const * const OldRootName, char const * const NewRootName)/*{{{*/ { // prevent NewRoot being a subtree of OldRoot if (OldRootName == nullptr) return; if (NewRootName != nullptr) { if (strcmp(OldRootName, NewRootName) == 0) return; std::string const oldroot = std::string(OldRootName) + "::"; if (strcasestr(NewRootName, oldroot.c_str()) != NULL) return; } Item * Top; Item const * const OldRoot = Top = Lookup(OldRootName, false); if (Top == nullptr) return; std::string NewRoot; if (NewRootName != nullptr) NewRoot.append(NewRootName).append("::"); Top->Value.clear(); Item * const Stop = Top; Top = Top->Child; Stop->Child = 0; for (; Top != 0;) { if (Top->Child != 0) { Top = Top->Child; continue; } while (Top != 0 && Top->Next == 0) { Set(NewRoot + Top->FullTag(OldRoot), Top->Value); Item const * const Tmp = Top; Top = Top->Parent; delete Tmp; if (Top == Stop) return; } Set(NewRoot + Top->FullTag(OldRoot), Top->Value); Item const * const Tmp = Top; if (Top != 0) Top = Top->Next; delete Tmp; } } /*}}}*/ // Configuration::Exists - Returns true if the Name exists /*{{{*/ // --------------------------------------------------------------------- /* */ bool Configuration::Exists(const char *Name) const { const Item *Itm = Lookup(Name); if (Itm == 0) return false; return true; } /*}}}*/ // Configuration::ExistsAny - Returns true if the Name, possibly /*{{{*/ // --------------------------------------------------------------------- /* qualified by /[fdbi] exists */ bool Configuration::ExistsAny(const char *Name) const { string key = Name; if (key.size() > 2 && key.end()[-2] == '/') { if (key.find_first_of("fdbi",key.size()-1) < key.size()) { key.resize(key.size() - 2); if (Exists(key.c_str())) return true; } else { _error->Warning(_("Unrecognized type abbreviation: '%c'"), key.end()[-3]); } } return Exists(Name); } /*}}}*/ // Configuration::Dump - Dump the config /*{{{*/ // --------------------------------------------------------------------- /* Dump the entire configuration space */ void Configuration::Dump(ostream& str) { Dump(str, NULL, "%F \"%v\";\n", true); } void Configuration::Dump(ostream& str, char const * const root, char const * const formatstr, bool const emptyValue) { const Configuration::Item* Top = Tree(root); if (Top == 0) return; const Configuration::Item* const Root = (root == NULL) ? NULL : Top; std::vector const format = VectorizeString(formatstr, '%'); /* Write out all of the configuration directives by walking the configuration tree */ do { if (emptyValue == true || Top->Value.empty() == emptyValue) { std::vector::const_iterator f = format.begin(); str << *f; for (++f; f != format.end(); ++f) { if (f->empty() == true) { ++f; str << '%' << *f; continue; } char const type = (*f)[0]; if (type == 'f') str << Top->FullTag(); else if (type == 't') str << Top->Tag; else if (type == 'v') str << Top->Value; else if (type == 'F') str << QuoteString(Top->FullTag(), "=\"\n"); else if (type == 'T') str << QuoteString(Top->Tag, "=\"\n"); else if (type == 'V') str << QuoteString(Top->Value, "=\"\n"); else if (type == 'n') str << "\n"; else if (type == 'N') str << "\t"; else str << '%' << type; str << f->c_str() + 1; } } if (Top->Child != 0) { Top = Top->Child; continue; } while (Top != 0 && Top->Next == 0) Top = Top->Parent; if (Top != 0) Top = Top->Next; if (Root != NULL) { const Configuration::Item* I = Top; while(I != 0) { if (I == Root) break; else I = I->Parent; } if (I == 0) break; } } while (Top != 0); } /*}}}*/ // Configuration::Item::FullTag - Return the fully scoped tag /*{{{*/ // --------------------------------------------------------------------- /* Stop sets an optional max recursion depth if this item is being viewed as part of a sub tree. */ string Configuration::Item::FullTag(const Item *Stop) const { if (Parent == 0 || Parent->Parent == 0 || Parent == Stop) return Tag; return Parent->FullTag(Stop) + "::" + Tag; } /*}}}*/ // ReadConfigFile - Read a configuration file /*{{{*/ // --------------------------------------------------------------------- /* The configuration format is very much like the named.conf format used in bind8, in fact this routine can parse most named.conf files. Sectional config files are like bind's named.conf where there are sections like 'zone "foo.org" { .. };' This causes each section to be added in with a tag like "zone::foo.org" instead of being split tag/value. AsSectional enables Sectional parsing.*/ static void leaveCurrentScope(std::stack &Stack, std::string &ParentTag) { if (Stack.empty()) ParentTag.clear(); else { ParentTag = Stack.top(); Stack.pop(); } } bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectional, unsigned const &Depth) { // Open the stream for reading FileFd F; if (OpenConfigurationFileFd(FName, F) == false) return false; string LineBuffer; std::stack Stack; // Parser state string ParentTag; int CurLine = 0; bool InComment = false; while (F.Eof() == false) { // The raw input line. std::string Input; if (F.ReadLine(Input) == false) Input.clear(); // The input line with comments stripped. std::string Fragment; // Expand tabs in the input line and remove leading and trailing // whitespace. { const int BufferSize = Input.size() * 8 + 1; char *Buffer = new char[BufferSize]; try { memcpy(Buffer, Input.c_str(), Input.size() + 1); _strtabexpand(Buffer, BufferSize); _strstrip(Buffer); Input = Buffer; } catch(...) { delete[] Buffer; throw; } delete[] Buffer; } CurLine++; // Now strip comments; if the whole line is contained in a // comment, skip this line. // The first meaningful character in the current fragment; will // be adjusted below as we remove bytes from the front. std::string::const_iterator Start = Input.begin(); // The last meaningful character in the current fragment. std::string::const_iterator End = Input.end(); // Multi line comment if (InComment == true) { for (std::string::const_iterator I = Start; I != End; ++I) { if (*I == '*' && I + 1 != End && I[1] == '/') { Start = I + 2; InComment = false; break; } } if (InComment == true) continue; } // Discard single line comments bool InQuote = false; for (std::string::const_iterator I = Start; I != End; ++I) { if (*I == '"') InQuote = !InQuote; if (InQuote == true) continue; if ((*I == '/' && I + 1 != End && I[1] == '/') || (*I == '#' && strcmp(string(I,I+6).c_str(),"#clear") != 0 && strcmp(string(I,I+8).c_str(),"#include") != 0 && strcmp(string(I,I+strlen("#x-apt-configure-index")).c_str(), "#x-apt-configure-index") != 0)) { End = I; break; } } // Look for multi line comments and build up the // fragment. Fragment.reserve(End - Start); InQuote = false; for (std::string::const_iterator I = Start; I != End; ++I) { if (*I == '"') InQuote = !InQuote; if (InQuote == true) Fragment.push_back(*I); else if (*I == '/' && I + 1 != End && I[1] == '*') { InComment = true; for (std::string::const_iterator J = I; J != End; ++J) { if (*J == '*' && J + 1 != End && J[1] == '/') { // Pretend we just finished walking over the // comment, and don't add anything to the output // fragment. I = J + 1; InComment = false; break; } } if (InComment == true) break; } else Fragment.push_back(*I); } // Skip blank lines. if (Fragment.empty()) continue; // The line has actual content; interpret what it means. InQuote = false; Start = Fragment.begin(); End = Fragment.end(); for (std::string::const_iterator I = Start; I != End; ++I) { if (*I == '"') InQuote = !InQuote; if (InQuote == false && (*I == '{' || *I == ';' || *I == '}')) { // Put the last fragment into the buffer std::string::const_iterator NonWhitespaceStart = Start; std::string::const_iterator NonWhitespaceStop = I; for (; NonWhitespaceStart != I && isspace(*NonWhitespaceStart) != 0; ++NonWhitespaceStart) ; for (; NonWhitespaceStop != NonWhitespaceStart && isspace(NonWhitespaceStop[-1]) != 0; --NonWhitespaceStop) ; if (LineBuffer.empty() == false && NonWhitespaceStop - NonWhitespaceStart != 0) LineBuffer += ' '; LineBuffer += string(NonWhitespaceStart, NonWhitespaceStop); // Drop this from the input string, saving the character // that terminated the construct we just closed. (i.e., a // brace or a semicolon) char TermChar = *I; Start = I + 1; // Syntax Error if (TermChar == '{' && LineBuffer.empty() == true) return _error->Error(_("Syntax error %s:%u: Block starts with no name."),FName.c_str(),CurLine); // No string on this line if (LineBuffer.empty() == true) { if (TermChar == '}') leaveCurrentScope(Stack, ParentTag); continue; } // Parse off the tag string Tag; const char *Pos = LineBuffer.c_str(); if (ParseQuoteWord(Pos,Tag) == false) return _error->Error(_("Syntax error %s:%u: Malformed tag"),FName.c_str(),CurLine); // Parse off the word string Word; bool NoWord = false; if (ParseCWord(Pos,Word) == false && ParseQuoteWord(Pos,Word) == false) { if (TermChar != '{') { Word = Tag; Tag = ""; } else NoWord = true; } if (strlen(Pos) != 0) return _error->Error(_("Syntax error %s:%u: Extra junk after value"),FName.c_str(),CurLine); // Go down a level if (TermChar == '{') { Stack.push(ParentTag); /* Make sectional tags incorporate the section into the tag string */ if (AsSectional == true && Word.empty() == false) { Tag.append("::").append(Word); Word.clear(); } if (ParentTag.empty() == true) ParentTag = Tag; else ParentTag.append("::").append(Tag); Tag.clear(); } // Generate the item name string Item; if (ParentTag.empty() == true) Item = Tag; else { if (TermChar != '{' || Tag.empty() == false) Item = ParentTag + "::" + Tag; else Item = ParentTag; } // Specials if (Tag.length() >= 1 && Tag[0] == '#') { if (ParentTag.empty() == false) return _error->Error(_("Syntax error %s:%u: Directives can only be done at the top level"),FName.c_str(),CurLine); Tag.erase(Tag.begin()); if (Tag == "clear") Conf.Clear(Word); else if (Tag == "include") { if (Depth > 10) return _error->Error(_("Syntax error %s:%u: Too many nested includes"),FName.c_str(),CurLine); if (Word.length() > 2 && Word.end()[-1] == '/') { if (ReadConfigDir(Conf,Word,AsSectional,Depth+1) == false) return _error->Error(_("Syntax error %s:%u: Included from here"),FName.c_str(),CurLine); } else { if (ReadConfigFile(Conf,Word,AsSectional,Depth+1) == false) return _error->Error(_("Syntax error %s:%u: Included from here"),FName.c_str(),CurLine); } } else if (Tag == "x-apt-configure-index") { if (LoadConfigurationIndex(Word) == false) return _error->Warning("Loading the configure index %s in file %s:%u failed!", Word.c_str(), FName.c_str(), CurLine); } else return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str()); } else if (Tag.empty() == true && NoWord == false && Word == "#clear") return _error->Error(_("Syntax error %s:%u: clear directive requires an option tree as argument"),FName.c_str(),CurLine); else { // Set the item in the configuration class if (NoWord == false) Conf.Set(Item,Word); } // Empty the buffer LineBuffer.clear(); // Move up a tag, but only if there is no bit to parse if (TermChar == '}') leaveCurrentScope(Stack, ParentTag); } } // Store the remaining text, if any, in the current line buffer. // NB: could change this to use string-based operations; I'm // using strstrip now to ensure backwards compatibility. // -- dburrows 2008-04-01 { char *Buffer = new char[End - Start + 1]; try { std::copy(Start, End, Buffer); Buffer[End - Start] = '\0'; const char *Stripd = _strstrip(Buffer); if (*Stripd != 0 && LineBuffer.empty() == false) LineBuffer += " "; LineBuffer += Stripd; } catch(...) { delete[] Buffer; throw; } delete[] Buffer; } } if (LineBuffer.empty() == false) return _error->Error(_("Syntax error %s:%u: Extra junk at end of file"),FName.c_str(),CurLine); return true; } /*}}}*/ // ReadConfigDir - Read a directory of config files /*{{{*/ // --------------------------------------------------------------------- /* */ bool ReadConfigDir(Configuration &Conf,const string &Dir, bool const &AsSectional, unsigned const &Depth) { bool good = true; for (auto const &I : GetListOfFilesInDir(Dir, "conf", true, true)) good = ReadConfigFile(Conf, I, AsSectional, Depth) && good; return good; } /*}}}*/ // MatchAgainstConfig Constructor /*{{{*/ Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config) { std::vector const strings = _config->FindVector(Config); for (std::vector::const_iterator s = strings.begin(); s != strings.end(); ++s) { regex_t *p = new regex_t; if (regcomp(p, s->c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB) == 0) patterns.push_back(p); else { regfree(p); delete p; _error->Warning("Invalid regular expression '%s' in configuration " "option '%s' will be ignored.", s->c_str(), Config); continue; } } if (strings.empty() == true) patterns.push_back(NULL); } /*}}}*/ // MatchAgainstConfig Destructor /*{{{*/ Configuration::MatchAgainstConfig::~MatchAgainstConfig() { clearPatterns(); } void Configuration::MatchAgainstConfig::clearPatterns() { for(std::vector::const_iterator p = patterns.begin(); p != patterns.end(); ++p) { if (*p == NULL) continue; regfree(*p); delete *p; } patterns.clear(); } /*}}}*/ // MatchAgainstConfig::Match - returns true if a pattern matches /*{{{*/ bool Configuration::MatchAgainstConfig::Match(char const * str) const { for(std::vector::const_iterator p = patterns.begin(); p != patterns.end(); ++p) if (*p != NULL && regexec(*p, str, 0, 0, 0) == 0) return true; return false; } /*}}}*/