X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_httpd_acl.cpp;h=ef2ac72ffa7a8d0450551334a39cb63024c13d1b;hb=00fa6d592ed2640fcdf74444786de555c1c3da25;hp=e16874bb4822eab700b55ad26de4eb9e6b025bfb;hpb=dfdbcc2939dff8311bd38046f6be518021bcede1;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_httpd_acl.cpp b/src/modules/m_httpd_acl.cpp index e16874bb4..ef2ac72ff 100644 --- a/src/modules/m_httpd_acl.cpp +++ b/src/modules/m_httpd_acl.cpp @@ -2,7 +2,7 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team + * InspIRCd: (C) 2002-2009 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see @@ -18,47 +18,258 @@ /* $ModDesc: Provides access control lists (passwording of resources, ip restrictions etc) to m_httpd.so dependent modules */ /* $ModDep: httpd.h */ +class HTTPACL : public Extensible +{ + public: + std::string path; + std::string username; + std::string password; + std::string whitelist; + std::string blacklist; + + HTTPACL(const std::string &set_path, const std::string &set_username, const std::string &set_password, + const std::string &set_whitelist, const std::string &set_blacklist) + : path(set_path), username(set_username), password(set_password), whitelist(set_whitelist), + blacklist(set_blacklist) { } + + ~HTTPACL() { } +}; + class ModuleHTTPAccessList : public Module { - + std::string stylesheet; bool changed; + std::vector acl_list; public: void ReadConfig() { + acl_list.clear(); ConfigReader c(ServerInstance); + int n_items = c.Enumerate("httpdacl"); + for (int i = 0; i < n_items; ++i) + { + std::string path = c.ReadValue("httpdacl", "path", i); + std::string types = c.ReadValue("httpdacl", "types", i); + irc::commasepstream sep(types); + std::string type; + std::string username; + std::string password; + std::string whitelist; + std::string blacklist; + + while (sep.GetToken(type)) + { + if (type == "password") + { + username = c.ReadValue("httpdacl", "username", i); + password = c.ReadValue("httpdacl", "password", i); + } + else if (type == "whitelist") + { + whitelist = c.ReadValue("httpdacl", "whitelist", i); + } + else if (type == "blacklist") + { + blacklist = c.ReadValue("httpdacl", "blacklist", i); + } + else + { + throw ModuleException("Invalid HTTP ACL type '" + type + "'"); + } + } + + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "Read ACL: path=%s pass=%s whitelist=%s blacklist=%s", path.c_str(), + password.c_str(), whitelist.c_str(), blacklist.c_str()); + + acl_list.push_back(HTTPACL(path, username, password, whitelist, blacklist)); + } } ModuleHTTPAccessList(InspIRCd* Me) : Module(Me) { ReadConfig(); - this->changed = true; Implementation eventlist[] = { I_OnEvent, I_OnRequest }; ServerInstance->Modules->Attach(eventlist, this, 2); } - void OnEvent(Event* event) + void BlockAccess(HTTPRequest* http, Event* event, int returnval, const std::string &extraheaderkey = "", const std::string &extraheaderval="") + { + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "BlockAccess (%d)", returnval); + + std::stringstream data("Access to this resource is denied by an access control list. Please contact your IRC administrator."); + HTTPDocument response(http->sock, &data, returnval); + response.headers.SetHeader("X-Powered-By", "m_httpd_acl.so"); + if (!extraheaderkey.empty()) + response.headers.SetHeader(extraheaderkey, extraheaderval); + Request req((char*)&response, (Module*)this, event->GetSource()); + req.Send(); + } + + bool IsBase64(unsigned char c) { - std::stringstream data(""); + return (isalnum(c) || (c == '+') || (c == '/')); + } + + std::string Base64Decode(const std::string &base64) + { + const std::string base64_chars("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"); + int inputlen = base64.length(); + int i = 0, j = 0, input = 0; + unsigned char longbuf[4], shortbuf[3]; + std::string retval; + + if (inputlen == 0) + return ""; + + while (inputlen-- && (base64[input] != '=') && IsBase64(base64[input])) + { + longbuf[i++] = base64[input]; + input++; + if (i == 4) + { + for (i = 0; i < 4; ++i) + longbuf[i] = base64_chars.find(longbuf[i]); + + shortbuf[0] = (longbuf[0] << 2) + ((longbuf[1] & 0x30) >> 4); + shortbuf[1] = ((longbuf[1] & 0xf) << 4) + ((longbuf[2] & 0x3c) >> 2); + shortbuf[2] = ((longbuf[2] & 0x3) << 6) + longbuf[3]; + + for (i = 0; i < 3; ++i) + retval += shortbuf[i]; + + i = 0; + } + } + + if (i) + { + for (j = i; j < 4; ++j) + longbuf[j] = 0; + + for (j = 0; j < 4; ++j) + longbuf[j] = base64_chars.find(longbuf[j]); + + shortbuf[0] = (longbuf[0] << 2) + ((longbuf[1] & 0x30) >> 4); + shortbuf[1] = ((longbuf[1] & 0xf) << 4) + ((longbuf[2] & 0x3c) >> 2); + shortbuf[2] = ((longbuf[2] & 0x3) << 6) + longbuf[3]; + + for (j = 0; j < i - 1; ++j) + retval += shortbuf[j]; + } - if (event->GetEventID() == "httpd_url") + return retval; + } + + void OnEvent(Event* event) + { + if (event->GetEventID() == "httpd_acl") { - ServerInstance->Logs->Log("m_http_stats", DEBUG,"Handling httpd event"); + ServerInstance->Logs->Log("m_http_stats", DEBUG,"Handling httpd acl event"); HTTPRequest* http = (HTTPRequest*)event->GetData(); + for (std::vector::const_iterator this_acl = acl_list.begin(); this_acl != acl_list.end(); ++this_acl) + { + if (InspIRCd::Match(http->GetURI(), this_acl->path, ascii_case_insensitive_map)) + { + if (!this_acl->blacklist.empty()) + { + /* Blacklist */ + irc::commasepstream sep(this_acl->blacklist); + std::string entry; + + while (sep.GetToken(entry)) + { + if (InspIRCd::Match(http->GetIP(), entry, ascii_case_insensitive_map)) + { + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "Denying access to blacklisted resource %s (matched by pattern %s) from ip %s (matched by entry %s)", + http->GetURI().c_str(), this_acl->path.c_str(), http->GetIP().c_str(), entry.c_str()); + BlockAccess(http, event, 403); + return; + } + } + } + if (!this_acl->whitelist.empty()) + { + /* Whitelist */ + irc::commasepstream sep(this_acl->whitelist); + std::string entry; + bool allow_access = false; + + while (sep.GetToken(entry)) + { + if (InspIRCd::Match(http->GetIP(), entry, ascii_case_insensitive_map)) + allow_access = true; + } + + if (!allow_access) + { + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "Denying access to whitelisted resource %s (matched by pattern %s) from ip %s (Not in whitelist)", + http->GetURI().c_str(), this_acl->path.c_str(), http->GetIP().c_str()); + BlockAccess(http, event, 403); + return; + } + } + if (!this_acl->password.empty() && !this_acl->username.empty()) + { + /* Password auth, first look to see if we have a basic authentication header */ + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "Checking HTTP auth password for resource %s (matched by pattern %s) from ip %s, against username %s", + http->GetURI().c_str(), this_acl->path.c_str(), http->GetIP().c_str(), this_acl->username.c_str()); + + if (http->headers->IsSet("Authorization")) + { + /* Password has been given, validate it */ + std::string authorization = http->headers->GetHeader("Authorization"); + irc::spacesepstream sep(authorization); + std::string authtype; + std::string base64; + + sep.GetToken(authtype); + if (authtype == "Basic") + { + std::string user; + std::string pass; + + sep.GetToken(base64); + std::string userpass = Base64Decode(base64); + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "HTTP authorization: %s (%s)", userpass.c_str(), base64.c_str()); + + irc::sepstream userpasspair(userpass, ':'); + if (userpasspair.GetToken(user)) + { + userpasspair.GetToken(pass); + /* Access granted if username and password are correct */ + if (user == this_acl->username && pass == this_acl->password) + { + ServerInstance->Logs->Log("m_httpd_acl", DEBUG, "HTTP authorization: password and username match"); + return; + } + else + /* Invalid password */ + BlockAccess(http, event, 401, "WWW-Authenticate", "Basic realm=\"Restricted Object\""); + } + else + /* Malformed user:pass pair */ + BlockAccess(http, event, 401, "WWW-Authenticate", "Basic realm=\"Restricted Object\""); + } + else + /* Unsupported authentication type */ + BlockAccess(http, event, 401, "WWW-Authenticate", "Basic realm=\"Restricted Object\""); + } + else + { + /* No password given at all, access denied */ + BlockAccess(http, event, 401, "WWW-Authenticate", "Basic realm=\"Restricted Object\""); + } + } - //if ((http->GetURI() == "/stats") || (http->GetURI() == "/stats/")) - //{ - /* Send the document back to m_httpd */ - // HTTPDocument response(http->sock, &data, 200); - // response.headers.SetHeader("X-Powered-By", "m_httpd_stats.so"); - // response.headers.SetHeader("Content-Type", "text/xml"); - // Request req((char*)&response, (Module*)this, event->GetSource()); - // req.Send(); - //} + /* A path may only match one ACL (the first it finds in the config file) */ + return; + } + } } } @@ -73,7 +284,7 @@ class ModuleHTTPAccessList : public Module virtual Version GetVersion() { - return Version(1, 2, 0, 0, VF_VENDOR, API_VERSION); + return Version("$Id$", VF_VENDOR, API_VERSION); } };