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glibc  2.9
Functions
nisplus-parser.h File Reference
#include <pwd.h>
#include <grp.h>
#include <shadow.h>
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Functions

int _nss_nisplus_parse_pwent (nis_result *result, struct passwd *pw, char *buffer, size_t buflen, int *errnop)
int _nss_nisplus_parse_grent (nis_result *result, struct group *gr, char *buffer, size_t buflen, int *errnop)
int _nss_nisplus_parse_spent (nis_result *result, struct spwd *sp, char *buffer, size_t buflen, int *errnop)

Function Documentation

int _nss_nisplus_parse_grent ( nis_result *  result,
struct group gr,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 151 of file nisplus-parser.c.

{
  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
      || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
      || strcmp (NIS_RES_OBJECT (result)[0].EN_data.en_type, "group_tbl") != 0
      || NIS_RES_OBJECT (result)[0].EN_data.en_cols.en_cols_len < 4)
    return 0;

  nis_object *obj = NIS_RES_OBJECT (result);
  char *first_unused = buffer;
  size_t room_left = buflen;
  char *line;
  int count;
  size_t len;

  if (NISOBJLEN (0, obj) >= room_left)
    {
      /* The line is too long for our buffer.  */
    no_more_room:
      *errnop = ERANGE;
      return -1;
    }

  strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj));
  first_unused[NISOBJLEN (0, obj)] = '\0';
  len = strlen (first_unused);
  if (len == 0) /* group table is corrupt */
    return 0;
  gr->gr_name = first_unused;
  room_left -= len + 1;
  first_unused += len + 1;

  if (NISOBJLEN (1, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj));
  first_unused[NISOBJLEN (1, obj)] = '\0';
  gr->gr_passwd = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  char *numstr = NISOBJVAL (2, obj);
  len = NISOBJLEN (2, obj);
  if (len == 0 || numstr[len - 1] != '\0')
    {
      if (len >= room_left)
       goto no_more_room;

      strncpy (first_unused, numstr, len);
      first_unused[len] = '\0';
      numstr = first_unused;
    }
  if (numstr[0] == '\0')
    /* We should always have a gid.  */
    return 0;
  gr->gr_gid = strtoul (numstr, NULL, 10);

  if (NISOBJLEN (3, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (3, obj), NISOBJLEN (3, obj));
  first_unused[NISOBJLEN (3, obj)] = '\0';
  line = first_unused;
  len = strlen (line);
  room_left -= len + 1;
  first_unused += len + 1;
  /* Adjust the pointer so it is aligned for
     storing pointers.  */
  size_t adjust = ((__alignof__ (char *)
                  - (first_unused - (char *) 0) % __alignof__ (char *))
                 % __alignof__ (char *));
  if (room_left < adjust)
    goto no_more_room;
  first_unused += adjust;
  room_left -= adjust;
  gr->gr_mem = (char **) first_unused;

  count = 0;
  while (*line != '\0')
    {
      /* Skip leading blanks.  */
      while (isspace (*line))
       ++line;

      if (*line == '\0')
       break;

      if (room_left < sizeof (char *))
       goto no_more_room;
      room_left -= sizeof (char *);
      gr->gr_mem[count++] = line;

      while (*line != '\0' && *line != ',' && !isspace (*line))
       ++line;

      if (*line == ',' || isspace (*line))
       {
         int is = isspace (*line);

         *line++ = '\0';
         if (is)
           while (*line != '\0' && (*line == ',' || isspace (*line)))
             ++line;
       }
    }
  if (room_left < sizeof (char *))
    goto no_more_room;
  room_left -= sizeof (char *);
  gr->gr_mem[count] = NULL;

  return 1;
}

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int _nss_nisplus_parse_pwent ( nis_result *  result,
struct passwd pw,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 42 of file nisplus-parser.c.

{
  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
      || NIS_RES_NUMOBJ (result) != 1
      || __type_of (NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
      || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, "passwd_tbl") != 0
      || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 7)
    return 0;

  nis_object *obj = NIS_RES_OBJECT (result);
  char *first_unused = buffer;
  size_t room_left = buflen;
  size_t len;

  if (NISOBJLEN (0, obj) >= room_left)
    {
      /* The line is too long for our buffer.  */
    no_more_room:
      *errnop = ERANGE;
      return -1;
    }

  strncpy (first_unused, NISOBJVAL (0, obj), NISOBJLEN (0, obj));
  first_unused[NISOBJLEN (0, obj)] = '\0';
  len = strlen (first_unused);
  if (len == 0) /* No name ? Should never happen, database is corrupt */
    return 0;
  pw->pw_name = first_unused;
  room_left -= len + 1;
  first_unused += len + 1;

  if (NISOBJLEN (1, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (1, obj), NISOBJLEN (1, obj));
  first_unused[NISOBJLEN (1, obj)] = '\0';
  pw->pw_passwd = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  char *numstr = NISOBJVAL (2, obj);
  len = NISOBJLEN (2, obj);
  if (len == 0 && numstr[len - 1] != '\0')
    {
      if (len >= room_left)
       goto no_more_room;

      strncpy (first_unused, numstr, len);
      first_unused[len] = '\0';
      numstr = first_unused;
    }
  if (numstr[0] == '\0')
    /* If we don't have a uid, it's an invalid shadow entry.  */
    return 0;
  pw->pw_uid = strtoul (numstr, NULL, 10);

  numstr = NISOBJVAL (3, obj);
  len = NISOBJLEN (3, obj);
  if (len == 0 && numstr[len - 1] != '\0')
    {
      if (len >= room_left)
       goto no_more_room;

      strncpy (first_unused, numstr, len);
      first_unused[len] = '\0';
      numstr = first_unused;
    }
  if (numstr[0] == '\0')
    /* If we don't have a gid, it's an invalid shadow entry.  */
    return 0;
  pw->pw_gid = strtoul (numstr, NULL, 10);

  if (NISOBJLEN(4, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (4, obj), NISOBJLEN (4, obj));
  first_unused[NISOBJLEN (4, obj)] = '\0';
  pw->pw_gecos = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  if (NISOBJLEN (5, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (5, obj), NISOBJLEN (5, obj));
  first_unused[NISOBJLEN (5, obj)] = '\0';
  pw->pw_dir = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  if (NISOBJLEN (6, obj) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISOBJVAL (6, obj), NISOBJLEN (6, obj));
  first_unused[NISOBJLEN (6, obj)] = '\0';
  pw->pw_shell = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  return 1;
}

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int _nss_nisplus_parse_spent ( nis_result *  result,
struct spwd sp,
char *  buffer,
size_t  buflen,
int errnop 
)

Definition at line 268 of file nisplus-parser.c.

{
  char *first_unused = buffer;
  size_t room_left = buflen;
  size_t len;

  if (result == NULL)
    return 0;

  if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
      || NIS_RES_NUMOBJ (result) != 1
      || __type_of(NIS_RES_OBJECT (result)) != NIS_ENTRY_OBJ
      || strcmp (NIS_RES_OBJECT (result)->EN_data.en_type, "passwd_tbl") != 0
      || NIS_RES_OBJECT (result)->EN_data.en_cols.en_cols_len < 8)
    return 0;

  if (NISENTRYLEN (0, 0, result) >= room_left)
    {
      /* The line is too long for our buffer.  */
    no_more_room:
      *errnop = ERANGE;
      return -1;
    }

  strncpy (first_unused, NISENTRYVAL (0, 0, result),
          NISENTRYLEN (0, 0, result));
  first_unused[NISENTRYLEN (0, 0, result)] = '\0';
  len = strlen (first_unused);
  if (len == 0)
    return 0;
  sp->sp_namp = first_unused;
  room_left -= len + 1;
  first_unused += len + 1;

  if (NISENTRYLEN (0, 1, result) >= room_left)
    goto no_more_room;

  strncpy (first_unused, NISENTRYVAL (0, 1, result),
          NISENTRYLEN (0, 1, result));
  first_unused[NISENTRYLEN (0, 1, result)] = '\0';
  sp->sp_pwdp = first_unused;
  len = strlen (first_unused);
  room_left -= len + 1;
  first_unused += len + 1;

  sp->sp_lstchg = sp->sp_min = sp->sp_max = sp->sp_warn = sp->sp_inact =
    sp->sp_expire = -1;
  sp->sp_flag = ~0ul;

  if (NISENTRYLEN (0, 7, result) > 0)
    {
      char *line = NISENTRYVAL (0, 7, result);
      char *cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_lstchg = atol (line);

      line = cp;
      cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_min = atol (line);

      line = cp;
      cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_max = atol (line);

      line = cp;
      cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_warn = atol (line);

      line = cp;
      cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_inact = atol (line);

      line = cp;
      cp = strchr (line, ':');
      if (cp == NULL)
       return 1;
      *cp++ = '\0';
      if (*line)
       sp->sp_expire = atol (line);

      line = cp;
      if (line == NULL)
       return 1;
      if (*line)
       sp->sp_flag = atol (line);
    }

  return 1;
}

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