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-rw-r--r--src/configparser.cpp387
1 files changed, 387 insertions, 0 deletions
diff --git a/src/configparser.cpp b/src/configparser.cpp
new file mode 100644
index 000000000..22c3679ab
--- /dev/null
+++ b/src/configparser.cpp
@@ -0,0 +1,387 @@
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include <fstream>
+#include "configparser.h"
+
+struct Parser
+{
+ ParseStack& stack;
+ const int flags;
+ FILE* const file;
+ fpos current;
+ fpos last_tag;
+ reference<ConfigTag> tag;
+ int ungot;
+
+ Parser(ParseStack& me, int myflags, FILE* conf, const std::string& name)
+ : stack(me), flags(myflags), file(conf), current(name), last_tag(name), ungot(-1)
+ { }
+
+ int next(bool eof_ok = false)
+ {
+ if (ungot != -1)
+ {
+ int ch = ungot;
+ ungot = -1;
+ return ch;
+ }
+ int ch = fgetc(file);
+ if (ch == EOF && !eof_ok)
+ {
+ throw CoreException("Unexpected end-of-file");
+ }
+ else if (ch == '\n')
+ {
+ current.line++;
+ current.col = 0;
+ }
+ else
+ {
+ current.col++;
+ }
+ return ch;
+ }
+
+ void unget(int ch)
+ {
+ if (ungot != -1)
+ throw CoreException("INTERNAL ERROR: cannot unget twice");
+ ungot = ch;
+ }
+
+ void comment()
+ {
+ while (1)
+ {
+ int ch = next();
+ if (ch == '\n')
+ return;
+ }
+ }
+
+ void nextword(std::string& rv)
+ {
+ int ch = next();
+ while (isspace(ch))
+ ch = next();
+ while (isalnum(ch) || ch == '_')
+ {
+ rv.push_back(ch);
+ ch = next();
+ }
+ unget(ch);
+ }
+
+ bool kv()
+ {
+ std::string key;
+ nextword(key);
+ int ch = next();
+ if (ch == '>' && key.empty())
+ {
+ return false;
+ }
+ else if (ch == '#' && key.empty())
+ {
+ comment();
+ return true;
+ }
+ else if (ch != '=')
+ {
+ throw CoreException("Invalid character " + std::string(1, ch) + " in key (" + key + ")");
+ }
+
+ std::string value;
+ ch = next();
+ if (ch != '"')
+ {
+ throw CoreException("Invalid character in value of <" + tag->tag + ":" + key + ">");
+ }
+ while (1)
+ {
+ ch = next();
+ if (ch == '&')
+ {
+ std::string varname;
+ while (1)
+ {
+ ch = next();
+ if (isalnum(ch))
+ varname.push_back(ch);
+ else if (ch == ';')
+ break;
+ else
+ {
+ stack.errstr << "Invalid XML entity name in value of <" + tag->tag + ":" + key + ">\n"
+ << "To include an ampersand or quote, use &amp; or &quot;\n";
+ throw CoreException("Parse error");
+ }
+ }
+ std::map<std::string, std::string>::iterator var = stack.vars.find(varname);
+ if (var == stack.vars.end())
+ throw CoreException("Undefined XML entity reference '&" + varname + ";'");
+ value.append(var->second);
+ }
+ else if (ch == '"')
+ break;
+ value.push_back(ch);
+ }
+ tag->items.push_back(KeyVal(key, value));
+ return true;
+ }
+
+ void dotag()
+ {
+ last_tag = current;
+ std::string name;
+ nextword(name);
+
+ int spc = next();
+ if (spc == '>')
+ unget(spc);
+ else if (!isspace(spc))
+ throw CoreException("Invalid character in tag name");
+
+ if (name.empty())
+ throw CoreException("Empty tag name");
+
+ tag = new ConfigTag(name, current.filename, current.line);
+
+ while (kv());
+
+ if (name == "include")
+ {
+ stack.DoInclude(tag, flags);
+ }
+ else if (name == "define")
+ {
+ std::string varname = tag->getString("name");
+ std::string value = tag->getString("value");
+ if (varname.empty())
+ throw CoreException("Variable definition must include variable name");
+ stack.vars[varname] = value;
+ }
+ else
+ {
+ stack.output.insert(std::make_pair(name, tag));
+ }
+ // this is not a leak; reference<> takes care of the delete
+ tag = NULL;
+ }
+
+ bool outer_parse()
+ {
+ try
+ {
+ while (1)
+ {
+ int ch = next(true);
+ switch (ch)
+ {
+ case EOF:
+ // this is the one place where an EOF is not an error
+ return true;
+ case '#':
+ comment();
+ break;
+ case '<':
+ dotag();
+ break;
+ case ' ':
+ case '\r':
+ case '\t':
+ case '\n':
+ break;
+ case 0xFE:
+ case 0xFF:
+ stack.errstr << "Do not save your files as UTF-16; use ASCII!\n";
+ default:
+ throw CoreException("Syntax error - start of tag expected");
+ }
+ }
+ }
+ catch (CoreException& err)
+ {
+ stack.errstr << err.GetReason() << " at " << current.str();
+ if (tag)
+ stack.errstr << " (inside tag " << tag->tag << " at line " << tag->src_line << ")\n";
+ else
+ stack.errstr << " (last tag was on line " << last_tag.line << ")\n";
+ }
+ return false;
+ }
+};
+
+void ParseStack::DoInclude(ConfigTag* tag, int flags)
+{
+ if (flags & FLAG_NO_INC)
+ throw CoreException("Invalid <include> tag in file included with noinclude=\"yes\"");
+ std::string name;
+ if (tag->readString("file", name))
+ {
+ if (tag->getBool("noinclude", false))
+ flags |= FLAG_NO_INC;
+ if (tag->getBool("noexec", false))
+ flags |= FLAG_NO_EXEC;
+ if (!ParseFile(name, flags))
+ throw CoreException("Included");
+ }
+ else if (tag->readString("executable", name))
+ {
+ if (flags & FLAG_NO_EXEC)
+ throw CoreException("Invalid <include:executable> tag in file included with noexec=\"yes\"");
+ if (tag->getBool("noinclude", false))
+ flags |= FLAG_NO_INC;
+ if (tag->getBool("noexec", true))
+ flags |= FLAG_NO_EXEC;
+ if (!ParseExec(name, flags))
+ throw CoreException("Included");
+ }
+}
+
+bool ParseStack::ParseFile(const std::string& name, int flags)
+{
+ ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading file %s", name.c_str());
+ for (unsigned int t = 0; t < reading.size(); t++)
+ {
+ if (std::string(name) == reading[t])
+ {
+ throw CoreException("File " + name + " is included recursively (looped inclusion)");
+ }
+ }
+
+ /* It's not already included, add it to the list of files we've loaded */
+
+ FileWrapper file(fopen(name.c_str(), "r"));
+ if (!file)
+ throw CoreException("Could not read \"" + name + "\" for include");
+
+ reading.push_back(name);
+ Parser p(*this, flags, file, name);
+ bool ok = p.outer_parse();
+ reading.pop_back();
+ return ok;
+}
+
+bool ParseStack::ParseExec(const std::string& name, int flags)
+{
+ ServerInstance->Logs->Log("CONFIG", DEBUG, "Reading executable %s", name.c_str());
+ for (unsigned int t = 0; t < reading.size(); t++)
+ {
+ if (std::string(name) == reading[t])
+ {
+ throw CoreException("Executable " + name + " is included recursively (looped inclusion)");
+ }
+ }
+
+ /* It's not already included, add it to the list of files we've loaded */
+
+ FileWrapper file(popen(name.c_str(), "r"));
+ if (!file)
+ throw CoreException("Could not open executable \"" + name + "\" for include");
+
+ reading.push_back(name);
+ Parser p(*this, flags, file, name);
+ bool ok = p.outer_parse();
+ reading.pop_back();
+ return ok;
+}
+
+bool ConfigTag::readString(const std::string& key, std::string& value, bool allow_lf)
+{
+ if (!this)
+ return false;
+ for(std::vector<KeyVal>::iterator j = items.begin(); j != items.end(); ++j)
+ {
+ if(j->first != key)
+ continue;
+ value = j->second;
+ if (!allow_lf && (value.find('\n') != std::string::npos))
+ {
+ ServerInstance->Logs->Log("CONFIG",DEFAULT, "Value of <" + tag + ":" + key + "> at " + getTagLocation() +
+ " contains a linefeed, and linefeeds in this value are not permitted -- stripped to spaces.");
+ for (std::string::iterator n = value.begin(); n != value.end(); n++)
+ if (*n == '\n')
+ *n = ' ';
+ }
+ return true;
+ }
+ return false;
+}
+
+std::string ConfigTag::getString(const std::string& key, const std::string& def)
+{
+ std::string res = def;
+ readString(key, res);
+ return res;
+}
+
+long ConfigTag::getInt(const std::string &key, long def)
+{
+ std::string result;
+ if(!readString(key, result))
+ return def;
+
+ const char* res_cstr = result.c_str();
+ char* res_tail = NULL;
+ long res = strtol(res_cstr, &res_tail, 0);
+ if (res_tail == res_cstr)
+ return def;
+ switch (toupper(*res_tail))
+ {
+ case 'K':
+ res= res* 1024;
+ break;
+ case 'M':
+ res= res* 1024 * 1024;
+ break;
+ case 'G':
+ res= res* 1024 * 1024 * 1024;
+ break;
+ }
+ return res;
+}
+
+double ConfigTag::getFloat(const std::string &key, double def)
+{
+ std::string result;
+ if (!readString(key, result))
+ return def;
+ return strtod(result.c_str(), NULL);
+}
+
+bool ConfigTag::getBool(const std::string &key, bool def)
+{
+ std::string result;
+ if(!readString(key, result))
+ return def;
+
+ return (result == "yes" || result == "true" || result == "1" || result == "on");
+}
+
+std::string ConfigTag::getTagLocation()
+{
+ return src_name + ":" + ConvToStr(src_line);
+}
+
+std::string OperInfo::getConfig(const std::string& key)
+{
+ std::string rv;
+ if (type_block)
+ type_block->readString(key, rv);
+ if (oper_block)
+ oper_block->readString(key, rv);
+ return rv;
+}
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