1 files changed, 171 insertions, 0 deletions
diff --git a/ACE/apps/drwho/File_Manager.cpp b/ACE/apps/drwho/File_Manager.cpp
new file mode 100644
index 00000000000..74aa7fbb7a0
--- /dev/null
+++ b/ACE/apps/drwho/File_Manager.cpp
@@ -0,0 +1,171 @@
+// $Id$
+
+#include "ace/OS_NS_stdio.h"
+#include "ace/OS_NS_pwd.h"
+#include "ace/OS_NS_string.h"
+#include "ace/os_include/os_ctype.h"
+#include "File_Manager.h"
+
+File_Manager::File_Manager (void)
+  : number_of_friends (0),
+    max_key_length (0),
+    buffer_ptr (0),
+    current_ptr (0),
+    buffer_size (0)
+{
+}
+
+// Either opens the friends file (if FILENAME is not a NULL pointer)
+// or opens up the password file.  In either case, the number of
+// entries in the file are returned, i.e., number of friends...
+
+int
+File_Manager::open_file (const char *filename)
+{
+  return filename == 0
+    ? this->open_passwd_file ()
+    : this->open_friends_file (filename);
+}
+
+// Returns the next LOGIN_NAME and REAL_NAME from the file.
+
+void
+File_Manager::get_login_and_real_name (const char *&login_name, const char *&real_name)
+{
+  char *buf_ptr = this->current_ptr;
+
+  login_name = buf_ptr;
+
+  // Skip to the end of the login name.
+
+  while (isalnum (*buf_ptr))
+    buf_ptr++;
+
+  *buf_ptr++ = '\0';
+
+  // Now skip over white space to *start* of real name!
+
+  while (isspace (*buf_ptr) || *buf_ptr == '\0')
+    buf_ptr++;
+
+  real_name = buf_ptr;
+
+  while (*buf_ptr++ != '\n')
+    continue;
+
+  // Clear the trailing blanks and junk.
+
+  for (char *tmp_ptr = buf_ptr - 1;
+       isspace (*tmp_ptr);
+       tmp_ptr--)
+    *tmp_ptr = '\0';
+
+  // Skip over consecutive blank lines.
+
+  while (*buf_ptr == '\n')
+    buf_ptr++;
+
+  this->current_ptr = buf_ptr;
+}
+
+// Open up the yp passwd file and slurp all the users in!
+
+int
+File_Manager::open_passwd_file (void)
+{
+  const char *filename = ACE_OS::tempnam ();
+  FILE *fp = ACE_OS::fopen (filename, "w");
+
+  if (fp == 0)
+    return -1;
+
+  passwd *pwent;
+
+  for (ACE_OS::setpwent ();
+       (pwent = ACE_OS::getpwent ()) != 0; )
+    if (*pwent->pw_gecos != '\0')
+      {
+	char *cp = ACE_OS::strchr (pwent->pw_gecos, ',');
+
+	if (cp != 0)
+	  *cp = '\0';
+
+	ACE_OS::fprintf (fp,
+                         "%-8.8s %s\n",
+                         pwent->pw_name,
+                         pwent->pw_gecos);
+	this->number_of_friends++;
+      }
+
+  ACE_OS::endpwent ();
+
+  ACE_OS::fclose (fp);
+
+  if (this->mmap_.map (filename) == -1)
+    return -1;
+
+  this->buffer_ptr = (char *) this->mmap_.addr ();
+
+  this->buffer_size = this->mmap_.size ();
+  this->current_ptr = this->buffer_ptr;
+  return this->number_of_friends;
+}
+
+// This function opens up FILENAME and memory maps it in our address
+// space.
+
+int
+File_Manager::open_friends_file (const char *filename)
+{
+  char directory[MAXPATHLEN];
+  const char *pathname = directory;
+
+  // See if we've got a filename or a pathname (i.e., directory/filename).
+
+  if (ACE_OS::strrchr (filename, '/') != 0)
+    // We've got a complete pathname.
+    pathname = filename;
+  else
+    {
+      directory[0] = '\0';
+
+      const char *home = ACE_OS::getenv ("HOME");
+      if (home != 0)
+        {
+          ACE_OS::strcat (directory, home);
+          ACE_OS::strcat (directory, "/");
+        }
+      ACE_OS::strcat (directory, filename);
+    }
+
+  // Do the mmap'ing.
+
+  if (this->mmap_.map (pathname) == -1)
+    return -1;
+
+  this->buffer_ptr = (char *) this->mmap_.addr ();
+
+  this->buffer_size = this->mmap_.size ();
+  this->current_ptr = this->buffer_ptr;
+
+  // Determine how many friends there are by counting the newlines.
+
+  for (char *cp = this->buffer_ptr + this->buffer_size;
+       cp > this->buffer_ptr
+       ;)
+    if (*--cp == '\n')
+      {
+        this->number_of_friends++;
+
+        // Skip consecutive newlines.
+        while (cp[-1] == '\n')
+          --cp;
+      }
+
+  return this->number_of_friends;
+}
+
+#if defined (ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION)
+template ACE_Singleton<File_Manager, ACE_Null_Mutex> *
+  ACE_Singleton<File_Manager, ACE_Null_Mutex>::singleton_;
+#endif /* ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION */