diff options
Diffstat (limited to 'REORG.TODO/inet/ether_aton_r.c')
| -rw-r--r-- | REORG.TODO/inet/ether_aton_r.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/REORG.TODO/inet/ether_aton_r.c b/REORG.TODO/inet/ether_aton_r.c new file mode 100644 index 0000000000..7b558325ea --- /dev/null +++ b/REORG.TODO/inet/ether_aton_r.c @@ -0,0 +1,63 @@ +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 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 <ctype.h> +#include <stdlib.h> +#include <netinet/ether.h> +#include <netinet/if_ether.h> + + +struct ether_addr * +ether_aton_r (const char *asc, struct ether_addr *addr) +{ + size_t cnt; + + for (cnt = 0; cnt < 6; ++cnt) + { + unsigned int number; + char ch; + + ch = _tolower (*asc++); + if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f')) + return NULL; + number = isdigit (ch) ? (ch - '0') : (ch - 'a' + 10); + + ch = _tolower (*asc); + if ((cnt < 5 && ch != ':') || (cnt == 5 && ch != '\0' && !isspace (ch))) + { + ++asc; + if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f')) + return NULL; + number <<= 4; + number += isdigit (ch) ? (ch - '0') : (ch - 'a' + 10); + + ch = *asc; + if (cnt < 5 && ch != ':') + return NULL; + } + + /* Store result. */ + addr->ether_addr_octet[cnt] = (unsigned char) number; + + /* Skip ':'. */ + ++asc; + } + + return addr; +} +libc_hidden_def (ether_aton_r) |