From 45427285f4c6946b5fee1202f69389572d9086ad Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Tue, 5 Jun 2012 01:04:35 -0500
Subject: [PATCH] Add error likely cause routine

---
 src/libtdeldap.cpp | 61 +++++++++++++++++++++++++++++++++++++++++-----
 src/libtdeldap.h   |  1 +
 2 files changed, 56 insertions(+), 6 deletions(-)

diff --git a/src/libtdeldap.cpp b/src/libtdeldap.cpp
index f7afe0d..3b8f2af 100644
--- a/src/libtdeldap.cpp
+++ b/src/libtdeldap.cpp
@@ -18,6 +18,10 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
 #include <tqfile.h>
 
 #include <klocale.h>
@@ -46,6 +50,10 @@ int requested_ldap_version = LDAP_VERSION3;
 int requested_ldap_auth_method = LDAP_AUTH_SIMPLE;	// Is this safe and secure over an untrusted connection?
 char* ldap_user_and_operational_attributes[2] = {"*", "+"};
 
+enum ErrorCauseLocation {
+	ERRORCAUSE_LOCATION_BIND = 0
+};
+
 LDAPManager::LDAPManager(TQString realm, TQString host, TQObject *parent, const char *name) : TQObject(parent, name), m_realm(realm), m_host(host), m_port(0), m_creds(0), m_ldap(0)
 {
 	TQStringList domainChunks = TQStringList::split(".", realm.lower());
@@ -79,6 +87,22 @@ LDAPCredentials LDAPManager::currentLDAPCredentials() {
 	}
 }
 
+TQString ldapLikelyErrorCause(int errcode, int location) {
+	TQString ret;
+
+	if (location == ERRORCAUSE_LOCATION_BIND) {
+		if (LDAP_NAME_ERROR(errcode)) {
+			ret = "Unknown user name or incorrect user name format";
+		}
+	}
+
+	if (ret != "") {
+		ret.prepend("<p>" + i18n("Likely cause") + ":<br>");
+	}
+
+	return ret;
+}
+
 int LDAPManager::bind(TQString* errstr) {
 printf("[RAJA DEBUG 600.0] In LDAPManager::bind(%p)\n\r", errstr); fflush(stdout);
 	if (m_ldap) {
@@ -111,14 +135,14 @@ printf("[RAJA DEBUG 600.1] URI: %s\n\r", uri.ascii()); fflush(stdout);
 
 	int retcode = ldap_initialize(&m_ldap, uri.ascii());
 	if (retcode < 0) {
-		if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode));
-		else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)), i18n("Unable to connect to server!"));
+		if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND));
+		else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND)), i18n("Unable to connect to server!"));
 		return -1;
 	}
 	retcode = ldap_set_option(m_ldap, LDAP_OPT_PROTOCOL_VERSION, &requested_ldap_version);
 	if (retcode != LDAP_OPT_SUCCESS) {
-		if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode));
-		else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)), i18n("Unable to connect to server!"));
+		if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND));
+		else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND)), i18n("Unable to connect to server!"));
 		return -1;
 	}
 printf("[RAJA DEBUG 660.0]\n\r"); fflush(stdout);
@@ -219,8 +243,8 @@ printf("[RAJA DEBUG 660.2]\n\r"); fflush(stdout);
 printf("[RAJA DEBUG 600.2] ldap_dn: %s\n\r", ldap_dn.ascii()); fflush(stdout);
 
 		if (retcode != LDAP_SUCCESS ) {
-			if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode));
-			else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)), i18n("Unable to connect to server!"));
+			if (errstr) *errstr = i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND));
+			else KMessageBox::error(0, i18n("<qt>Unable to connect to LDAP server %1 on port %2<p>Reason: [%3] %4%5</qt>").arg(m_host).arg(m_port).arg(retcode).arg(ldap_err2string(retcode)).arg(ldapLikelyErrorCause(retcode, ERRORCAUSE_LOCATION_BIND)), i18n("Unable to connect to server!"));
 			return -1;
 		}
 
@@ -1341,6 +1365,31 @@ void LDAPManager::writeTDERealmList(LDAPRealmConfigList realms, KSimpleConfig* c
 	}
 }
 
+TQString LDAPManager::getMachineFQDN() {
+	struct addrinfo hints, *info, *p;
+	int gai_result;
+	
+	char hostname[1024];
+	hostname[1023] = '\0';
+	gethostname(hostname, 1023);
+	
+	memset(&hints, 0, sizeof hints);
+	hints.ai_family = AF_UNSPEC; // IPV4 or IPV6
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_CANONNAME;
+	
+	if ((gai_result = getaddrinfo(hostname, NULL, &hints, &info)) != 0) {
+		return TQString(hostname);
+	}
+	TQString fqdn = TQString(hostname);
+	for (p=info; p!=NULL; p=p->ai_next) {
+		fqdn = TQString(p->ai_canonname);
+	}
+	freeaddrinfo(info);
+
+	return fqdn;
+}
+
 // ===============================================================================================================
 //
 // DATA CLASS CONSTRUCTORS AND DESTRUCTORS
diff --git a/src/libtdeldap.h b/src/libtdeldap.h
index 2579902..f205b79 100644
--- a/src/libtdeldap.h
+++ b/src/libtdeldap.h
@@ -235,6 +235,7 @@ class LDAPManager : public TQObject {
 
 		int moveKerberosEntries(TQString newSuffix, TQString* errstr=0);
 
+		static TQString getMachineFQDN();
 		static void writeLDAPConfFile(LDAPRealmConfig realmcfg);
 		static void writeTDERealmList(LDAPRealmConfigList realms, KSimpleConfig* config);