diff options
Diffstat (limited to 'REORG.TODO/nis/nss_nis/nis-ethers.c')
| -rw-r--r-- | REORG.TODO/nis/nss_nis/nis-ethers.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/REORG.TODO/nis/nss_nis/nis-ethers.c b/REORG.TODO/nis/nss_nis/nis-ethers.c new file mode 100644 index 0000000000..2a466626e8 --- /dev/null +++ b/REORG.TODO/nis/nss_nis/nis-ethers.c @@ -0,0 +1,292 @@ +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <nss.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <libc-lock.h> +#include <rpcsvc/yp.h> +#include <rpcsvc/ypclnt.h> +#include <netinet/ether.h> +#include <netinet/if_ether.h> + +#include "nss-nis.h" + +/* Protect global state against multiple changers */ +__libc_lock_define_initialized (static, lock) + +/* Get the declaration of the parser function. */ +#define ENTNAME etherent +#define STRUCTURE etherent +#define EXTERN_PARSER +#include <nss/nss_files/files-parse.c> + +struct response +{ + struct response *next; + char val[0]; +}; + +static struct response *start; +static struct response *next; + +static int +saveit (int instatus, char *inkey, int inkeylen, char *inval, + int invallen, char *indata) +{ + if (instatus != YP_TRUE) + return 1; + + if (inkey && inkeylen > 0 && inval && invallen > 0) + { + struct response *newp = malloc (sizeof (struct response) + invallen + 1); + if (newp == NULL) + return 1; /* We have no error code for out of memory */ + + if (start == NULL) + start = newp; + else + next->next = newp; + next = newp; + + newp->next = NULL; + *((char *) mempcpy (newp->val, inval, invallen)) = '\0'; + } + + return 0; +} + +static void +internal_nis_endetherent (void) +{ + while (start != NULL) + { + next = start; + start = start->next; + free (next); + } +} + +enum nss_status +_nss_nis_endetherent (void) +{ + __libc_lock_lock (lock); + + internal_nis_endetherent (); + next = NULL; + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +internal_nis_setetherent (void) +{ + char *domainname; + struct ypall_callback ypcb; + enum nss_status status; + + yp_get_default_domain (&domainname); + + internal_nis_endetherent (); + + ypcb.foreach = saveit; + ypcb.data = NULL; + status = yperr2nss (yp_all (domainname, "ethers.byname", &ypcb)); + next = start; + + return status; +} + +enum nss_status +_nss_nis_setetherent (int stayopen) +{ + enum nss_status result; + + __libc_lock_lock (lock); + + result = internal_nis_setetherent (); + + __libc_lock_unlock (lock); + + return result; +} + +static enum nss_status +internal_nis_getetherent_r (struct etherent *eth, char *buffer, size_t buflen, + int *errnop) +{ + struct parser_data *data = (void *) buffer; + int parse_res; + + if (start == NULL) + internal_nis_setetherent (); + + /* Get the next entry until we found a correct one. */ + do + { + char *p; + + if (next == NULL) + return NSS_STATUS_NOTFOUND; + + p = strncpy (buffer, next->val, buflen); + + while (isspace (*p)) + ++p; + + parse_res = _nss_files_parse_etherent (p, eth, data, buflen, errnop); + if (parse_res == -1) + return NSS_STATUS_TRYAGAIN; + next = next->next; + } + while (!parse_res); + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nis_getetherent_r (struct etherent *result, char *buffer, size_t buflen, + int *errnop) +{ + int status; + + __libc_lock_lock (lock); + + status = internal_nis_getetherent_r (result, buffer, buflen, errnop); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_nis_gethostton_r (const char *name, struct etherent *eth, + char *buffer, size_t buflen, int *errnop) +{ + if (name == NULL) + { + *errnop = EINVAL; + return NSS_STATUS_UNAVAIL; + } + + char *domain; + if (__glibc_unlikely (yp_get_default_domain (&domain))) + return NSS_STATUS_UNAVAIL; + + char *result; + int len; + int yperr = yp_match (domain, "ethers.byname", name, strlen (name), &result, + &len); + + if (__glibc_unlikely (yperr != YPERR_SUCCESS)) + { + enum nss_status retval = yperr2nss (yperr); + + if (retval == NSS_STATUS_TRYAGAIN) + *errnop = errno; + return retval; + } + + if (__glibc_unlikely ((size_t) (len + 1) > buflen)) + { + free (result); + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + + char *p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen, + errnop); + if (__glibc_unlikely (parse_res < 1)) + { + if (parse_res == -1) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_nis_getntohost_r (const struct ether_addr *addr, struct etherent *eth, + char *buffer, size_t buflen, int *errnop) +{ + if (addr == NULL) + { + *errnop = EINVAL; + return NSS_STATUS_UNAVAIL; + } + + char *domain; + if (__glibc_unlikely (yp_get_default_domain (&domain))) + return NSS_STATUS_UNAVAIL; + + char buf[33]; + int nlen = snprintf (buf, sizeof (buf), "%x:%x:%x:%x:%x:%x", + (int) addr->ether_addr_octet[0], + (int) addr->ether_addr_octet[1], + (int) addr->ether_addr_octet[2], + (int) addr->ether_addr_octet[3], + (int) addr->ether_addr_octet[4], + (int) addr->ether_addr_octet[5]); + + char *result; + int len; + int yperr = yp_match (domain, "ethers.byaddr", buf, nlen, &result, &len); + + if (__glibc_unlikely (yperr != YPERR_SUCCESS)) + { + enum nss_status retval = yperr2nss (yperr); + + if (retval == NSS_STATUS_TRYAGAIN) + *errnop = errno; + return retval; + } + + if (__glibc_unlikely ((size_t) (len + 1) > buflen)) + { + free (result); + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + + char *p = strncpy (buffer, result, len); + buffer[len] = '\0'; + while (isspace (*p)) + ++p; + free (result); + + int parse_res = _nss_files_parse_etherent (p, eth, (void *) buffer, buflen, + errnop); + if (__glibc_unlikely (parse_res < 1)) + { + if (parse_res == -1) + return NSS_STATUS_TRYAGAIN; + else + return NSS_STATUS_NOTFOUND; + } + return NSS_STATUS_SUCCESS; +} |