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// $Id$
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_pwd.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_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 (ACE_OS::ace_isalnum (*buf_ptr))
buf_ptr++;
*buf_ptr++ = '\0';
// Now skip over white space to *start* of real name!
while (ACE_OS::ace_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;
ACE_OS::ace_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)
{
char *filename = "passwd-XXXXXX";
ACE_HANDLE f = ACE_OS::mkstemp (filename);
FILE *fp = ACE_OS::fdopen (f, "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 */
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