From 092c202a5e64852d38b3157c0d8c7b51b866a7f2 Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Sun, 29 May 2005 15:54:21 +0000
Subject: Added include stack to detect looped includes

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@1553 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/inspircd.cpp    |  2 ++
 src/inspircd_io.cpp | 33 ++++++++++++++++++++++++++++-----
 src/modules.cpp     |  3 +++
 3 files changed, 33 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/inspircd.cpp b/src/inspircd.cpp
index 9dc99857b..37c98bb1b 100644
--- a/src/inspircd.cpp
+++ b/src/inspircd.cpp
@@ -120,6 +120,7 @@ int ep, lep, sep;
 #endif
 
 bool has_been_netsplit = false;
+extern std::vector<std::string> include_stack;
 
 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, irc::StrHashComp> user_hash;
 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, irc::StrHashComp> chan_hash;
@@ -263,6 +264,7 @@ void ReadConfig(bool bail, userrec* user)
 	char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF],sqmax[MAXBUF],rqmax[MAXBUF];
 	ConnectClass c;
 	std::stringstream errstr;
+	include_stack.clear();
 	
 	if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 	{
diff --git a/src/inspircd_io.cpp b/src/inspircd_io.cpp
index e28290ec5..de3d23689 100644
--- a/src/inspircd_io.cpp
+++ b/src/inspircd_io.cpp
@@ -37,6 +37,7 @@ extern int openSockfd[MAXSOCKS];
 extern time_t TIME;
 extern bool unlimitcore;
 extern int MaxConn;
+std::vector<std::string> include_stack;
 
 void WriteOpers(char* text, ...);
 
@@ -298,6 +299,15 @@ bool LoadConf(const char* filename, std::stringstream *target, std::stringstream
 	}
 	// Fix the chmod of the file to restrict it to the current user and group
 	chmod(filename,0600);
+	for (int t = 0; t < include_stack.size(); t++)
+	{
+		if (std::string(filename) == include_stack[t])
+		{
+			*errorstream << "File " << filename << " is included recursively (looped inclusion)." << endl;
+			return false;
+		}
+	}
+	include_stack.push_back(filename);
 	// now open it
 	FILE* conf = fopen(filename,"r");
 	char buffer[MAXBUF];
@@ -314,6 +324,7 @@ bool LoadConf(const char* filename, std::stringstream *target, std::stringstream
 						if (!strncmp(buffer,"<include file=\"",15))
 						{
 							char* buf = buffer;
+							char confpath[10240],newconf[10240];
 							// include file directive
 							buf += 15;	// advance to filename
 							for (int j = 0; j < strlen(buffer); j++)
@@ -325,13 +336,25 @@ bool LoadConf(const char* filename, std::stringstream *target, std::stringstream
 								}
 							}
 							log(DEFAULT,"Opening included file '%s'",buf);
+							if (*buf != '/')
+							{
+								strlcpy(confpath,CONFIG_FILE,10240);
+								if (strstr(confpath,"/inspircd.conf"))
+								{
+									// leaves us with just the path
+									*(strstr(confpath,"/inspircd.conf")) = '\0';
+								}
+								snprintf(newconf,10240,"%s/%s",confpath,buf);
+							}
+							else snprintf(newconf,10240,"%s",buf);
 							std::stringstream merge(stringstream::in | stringstream::out);
 							// recursively call LoadConf and get the new data, use the same errorstream
-							LoadConf(buf, &merge, errorstream);
-							// append &merge to the end of the file
-							std::string newstuff = merge.str();
-							// append the new stuff to the end of the line
-							*target << newstuff;
+							if (LoadConf(newconf, &merge, errorstream))
+							{
+								// append to the end of the file
+								std::string newstuff = merge.str();
+								*target << newstuff;
+							}
 						}
 						else
 						{
diff --git a/src/modules.cpp b/src/modules.cpp
index 14b2abb3e..964cd2b74 100644
--- a/src/modules.cpp
+++ b/src/modules.cpp
@@ -72,6 +72,8 @@ extern int MODCOUNT;
 extern std::vector<Module*> modules;
 extern std::vector<ircd_module*> factory;
 
+extern std::vector<std::string> include_stack;
+
 extern time_t TIME;
 
 extern int LogLevel;
@@ -818,6 +820,7 @@ Module* Server::FindModule(std::string name)
 
 ConfigReader::ConfigReader()
 {
+	include_stack.clear();
 	this->cache = new std::stringstream(std::stringstream::in | std::stringstream::out);
 	this->errorlog = new std::stringstream(std::stringstream::in | std::stringstream::out);
 	this->readerror = LoadConf(CONFIG_FILE,this->cache,this->errorlog);
-- 
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