config: Fix crypt prototype on RedHat Linux.

include/includes.h: Fix crypt prototype on RedHat Linux.
smbd/fileio.c: Fix mmap bug found by WinCE client.
smbd/ipc.c: Fix WinCE wierdness with pipes being opened as \server\pipe\lanman
smbd/password.c: Fix encrypted null passwords.
Jeremy.
(This used to be commit 475992730c)

source3/acconfig.h

@@ -61,6 +61,7 @@
 #undef HAVE_FILE_MACRO
 #undef HAVE_FUNCTION_MACRO
 #undef HAVE_SETRESUID_DECL
+#undef HAVE_CRYPT_DECL
 #undef HAVE_SETRESUID
 #undef WITH_NETATALK
 #undef HAVE_INO64_T

source3/configure.in

@@ -123,6 +123,14 @@ if test x"$samba_cv_have_setresuid_decl" = x"yes"; then
     AC_DEFINE(HAVE_SETRESUID_DECL)
 fi
 
+# stupid glibc has the functions but no declaration. grrrr.
+AC_CACHE_CHECK([for crypt declaration],samba_cv_have_crypt_decl,[
+    AC_TRY_COMPILE([#include <unistd.h>],[int i = crypt],
+        samba_cv_have_crypt_decl=yes,samba_cv_have_crypt_decl=no)])
+if test x"$samba_cv_have_crypt_decl" = x"yes"; then
+    AC_DEFINE(HAVE_CRYPT_DECL)
+fi
+
 # and glibc has setresuid under linux but the function does
 # nothing until kernel 2.1.44! very dumb.
 AC_CACHE_CHECK([for real setresuid],samba_cv_have_setresuid,[

source3/include/config.h.in

@@ -118,6 +118,7 @@
 #undef HAVE_FILE_MACRO
 #undef HAVE_FUNCTION_MACRO
 #undef HAVE_SETRESUID_DECL
+#undef HAVE_CRYPT_DECL
 #undef HAVE_SETRESUID
 #undef WITH_NETATALK
 #undef HAVE_INO64_T

source3/include/includes.h

@@ -674,6 +674,11 @@ int setresuid(uid_t ruid, uid_t euid, uid_t suid);
 int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
 #endif
 
+#if (defined(HAVE_CRYPT) && !defined(HAVE_CRYPT_DECL))
+/* stupid glibc */
+int crypt(const char *key, const char *salt);
+#endif
+
 #if !defined(HAVE_BZERO) && defined(HAVE_MEMSET)
 #define bzero(a,b) memset((a),'\0',(b))
 #endif

source3/smbd/fileio.c

@@ -63,7 +63,7 @@ ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
 
 #if WITH_MMAP
   if (fsp->mmap_ptr) {
-	  SMB_OFF_T num = (fsp->mmap_size > pos) ? (fsp->mmap_size - pos) : -1;
+	  SMB_OFF_T num = (fsp->mmap_size > pos) ? (fsp->mmap_size - pos) : 0;
 	  num = MIN(n,num);
 	  if (num > 0) {
 		  memcpy(data,fsp->mmap_ptr+pos,num);

source3/smbd/ipc.c

@@ -3454,6 +3454,7 @@ static int named_pipe(connection_struct *conn,uint16 vuid, char *outbuf,char *na
 int reply_trans(connection_struct *conn, char *inbuf,char *outbuf, int size, int bufsize)
 {
 	fstring name;
+        int name_offset = 0;
 	char *data=NULL,*params=NULL;
 	uint16 *setup=NULL;
 	int outsize = 0;
@@ -3563,10 +3564,19 @@ int reply_trans(connection_struct *conn, char *inbuf,char *outbuf, int size, int
 	DEBUG(3,("trans <%s> data=%d params=%d setup=%d\n",
 		 name,tdscnt,tpscnt,suwcnt));
 	
-	if (strncmp(name,"\\PIPE\\",strlen("\\PIPE\\")) == 0) {
+        /*
+         * WinCE wierdness....
+         */
+
+        if (name[0] == '\\' && (StrnCaseCmp(&name[1],local_machine,
+                                strlen(local_machine)) == 0)) {
+          name_offset = strlen(local_machine)+1;
+        }
+
+	if (strncmp(&name[name_offset],"\\PIPE\\",strlen("\\PIPE\\")) == 0) {
 		DEBUG(5,("calling named_pipe\n"));
 		outsize = named_pipe(conn,vuid,outbuf,
-				     name+strlen("\\PIPE\\"),setup,data,params,
+				     name+name_offset+strlen("\\PIPE\\"),setup,data,params,
 				     suwcnt,tdscnt,tpscnt,msrcnt,mdrcnt,mprcnt);
 	} else {
 		DEBUG(3,("invalid pipe name\n"));

source3/smbd/oplock.c

@@ -54,7 +54,7 @@ BOOL open_oplock_ipc(void)
   if (oplock_sock == -1)
   {
     DEBUG(0,("open_oplock_ipc: Failed to get local UDP socket for \
-address %lx. Error was %s\n", htonl(INADDR_LOOPBACK), strerror(errno)));
+address %lx. Error was %s\n", (long)htonl(INADDR_LOOPBACK), strerror(errno)));
     global_oplock_port = 0;
     return(False);
   }

source3/smbd/password.c

@@ -379,6 +379,7 @@ BOOL smb_password_check(char *password, unsigned char *part_passwd, unsigned cha
  Do a specific test for an smb password being correct, given a smb_password and
  the lanman and NT responses.
 ****************************************************************************/
+
 BOOL smb_password_ok(struct smb_passwd *smb_pass,
                      uchar lm_pass[24], uchar nt_pass[24])
 {
@@ -386,6 +387,9 @@ BOOL smb_password_ok(struct smb_passwd *smb_pass,
 
 	if (!lm_pass || !smb_pass) return(False);
 
+	DEBUG(4,("Checking SMB password for user %s\n", 
+		 smb_pass->smb_name));
+
 	if(smb_pass->acct_ctrl & ACB_DISABLED) {
 		DEBUG(3,("account for user %s was disabled.\n", 
 			 smb_pass->smb_name));
@@ -397,9 +401,6 @@ BOOL smb_password_ok(struct smb_passwd *smb_pass,
 		return False;
 	}
 
-	DEBUG(4,("Checking SMB password for user %s\n", 
-		 smb_pass->smb_name));
-
 	if ((Protocol >= PROTOCOL_NT1) && (smb_pass->smb_nt_passwd != NULL)) {
 		/* We have the NT MD4 hash challenge available - see if we can
 		   use it (ie. does it exist in the smbpasswd file).
@@ -493,6 +494,11 @@ static BOOL pass_check_smb(char *user,char *password, struct passwd *pwd)
 		return(False);
 	}
 
+	if(password[0] == '\0' && smb_pass->acct_ctrl & ACB_PWNOTREQ && lp_null_passwords()) {
+		DEBUG(3,("account for user %s has no password and null passwords are allowed.\n", smb_pass->smb_name));
+		return(True);
+	}
+
 	if (smb_password_ok(smb_pass, 
 			    (unsigned char *)password,
 			    (uchar *)password)) {
@@ -510,7 +516,7 @@ return True if the password is correct, False otherwise
 ****************************************************************************/
 BOOL password_ok(char *user,char *password, int pwlen, struct passwd *pwd)
 {
-	if (pwlen == 24) {
+	if (pwlen == 24 || (lp_encrypted_passwords() && (pwlen == 0) && lp_null_passwords())) {
 		/* if it is 24 bytes long then assume it is an encrypted
 		   password */
 		return pass_check_smb(user, password, pwd);