diff options
Diffstat (limited to 'nss')
| -rw-r--r-- | nss/Makefile | 6 | ||||
| -rw-r--r-- | nss/Versions | 1 | ||||
| -rw-r--r-- | nss/ether_hton.c | 58 | ||||
| -rw-r--r-- | nss/ether_ntoh.c | 61 |
4 files changed, 126 insertions, 0 deletions
diff --git a/nss/Makefile b/nss/Makefile index 2dfa7ebef9..148c6dc1cf 100644 --- a/nss/Makefile +++ b/nss/Makefile @@ -68,6 +68,12 @@ CFLAGS-getaliasent_r.c += -fexceptions CFLAGS-getaliasent.c += -fexceptions endif +# ethers routines: +routines += \ + ether_hton \ + ether_ntoh \ + # routines + # grp routines: routines += \ fgetgrent \ diff --git a/nss/Versions b/nss/Versions index 5d1b1dac3d..99208cb9df 100644 --- a/nss/Versions +++ b/nss/Versions @@ -10,6 +10,7 @@ libc { endgrent; endpwent; endspent; + ether_hostton; ether_ntohost; # f* fgetgrent; fgetgrent_r; diff --git a/nss/ether_hton.c b/nss/ether_hton.c new file mode 100644 index 0000000000..5419464756 --- /dev/null +++ b/nss/ether_hton.c @@ -0,0 +1,58 @@ +/* Copyright (C) 1996-2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <netinet/ether.h> +#include <netinet/if_ether.h> +#include <string.h> + +#include "nsswitch.h" + +/* Type of the lookup function we need here. */ +typedef int (*lookup_function) (const char *, struct etherent *, char *, int, + int *); + +int +ether_hostton (const char *hostname, struct ether_addr *addr) +{ + nss_action_list nip; + union + { + lookup_function f; + void *ptr; + } fct; + int no_more; + enum nss_status status = NSS_STATUS_UNAVAIL; + struct etherent etherent; + + no_more = __nss_ethers_lookup2 (&nip, "gethostton_r", NULL, &fct.ptr); + + while (no_more == 0) + { + char buffer[1024]; + + status = (*fct.f) (hostname, ðerent, buffer, sizeof buffer, &errno); + + no_more = __nss_next2 (&nip, "gethostton_r", NULL, &fct.ptr, status, 0); + } + + if (status == NSS_STATUS_SUCCESS) + memcpy (addr, etherent.e_addr.ether_addr_octet, + sizeof (struct ether_addr)); + + return status == NSS_STATUS_SUCCESS ? 0 : -1; +} diff --git a/nss/ether_ntoh.c b/nss/ether_ntoh.c new file mode 100644 index 0000000000..2f1eb4ec3d --- /dev/null +++ b/nss/ether_ntoh.c @@ -0,0 +1,61 @@ +/* Copyright (C) 1996-2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <netinet/ether.h> +#include <netinet/if_ether.h> +#include <string.h> + +#include <nsswitch.h> + + +/* Type of the lookup function we need here. */ +typedef int (*lookup_function) (const struct ether_addr *, struct etherent *, + char *, size_t, int *); + +int +ether_ntohost (char *hostname, const struct ether_addr *addr) +{ + nss_action_list nip; + union + { + lookup_function f; + void *ptr; + } fct; + int no_more; + enum nss_status status = NSS_STATUS_UNAVAIL; + struct etherent etherent; + + no_more = __nss_ethers_lookup2 (&nip, "getntohost_r", NULL, &fct.ptr); + + while (no_more == 0) + { + char buffer[1024]; + + status = (*fct.f) (addr, ðerent, buffer, sizeof buffer, &errno); + + no_more = __nss_next2 (&nip, "getntohost_r", NULL, &fct.ptr, status, 0); + } + + if (status == NSS_STATUS_SUCCESS) + /* XXX This is a potential cause of trouble because the size of + the HOSTNAME buffer is not known but the interface does not + provide this information. */ + strcpy (hostname, etherent.e_name); + + return status == NSS_STATUS_SUCCESS ? 0 : -1; +} |