From 10b5112be237662c56b752f05933032980d9895b Mon Sep 17 00:00:00 2001 From: Assar Westerlund Date: Sun, 18 Jul 1999 23:11:24 +0000 Subject: [PATCH] new files git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@6470 ec53bebd-3082-4978-b11e-865c3cabbd6b --- lib/roken/copyhostent.c | 107 ++++++++++++++++++++++++++++++++++++ lib/roken/freehostent.c | 67 ++++++++++++++++++++++ lib/roken/getipnodebyaddr.c | 79 ++++++++++++++++++++++++++ lib/roken/getipnodebyname.c | 87 +++++++++++++++++++++++++++++ 4 files changed, 340 insertions(+) create mode 100644 lib/roken/copyhostent.c create mode 100644 lib/roken/freehostent.c create mode 100644 lib/roken/getipnodebyaddr.c create mode 100644 lib/roken/getipnodebyname.c diff --git a/lib/roken/copyhostent.c b/lib/roken/copyhostent.c new file mode 100644 index 000000000..0bef35ccd --- /dev/null +++ b/lib/roken/copyhostent.c @@ -0,0 +1,107 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include +RCSID("$Id$"); +#endif + +#include "roken.h" + +/* + * return a malloced copy of `h' + */ + +struct hostent * +copyhostent (const struct hostent *h) +{ + struct hostent *res; + char **p; + int i, n; + + res = malloc (sizeof (*res)); + if (res == NULL) + return NULL; + res->h_name = NULL; + res->h_aliases = NULL; + res->h_addrtype = h->h_addrtype; + res->h_length = h->h_length; + res->h_addr_list = NULL; + res->h_name = strdup (h->h_name); + if (res->h_name == NULL) { + freehostent (res); + return NULL; + } + for (n = 0, p = h->h_aliases; *p != NULL; ++p) + ++n; + res->h_aliases = malloc ((n + 1) * sizeof(*res->h_aliases)); + if (res->h_aliases == NULL) { + freehostent (res); + return NULL; + } + for (i = 0; i < n + 1; ++i) + res->h_aliases[i] = NULL; + for (i = 0; i < n; ++i) { + res->h_aliases[i] = strdup (h->h_aliases[i]); + if (res->h_aliases[i] == NULL) { + freehostent (res); + return NULL; + } + } + + for (n = 0, p = h->h_addr_list; *p != NULL; ++p) + ++n; + res->h_addr_list = malloc ((n + 1) * sizeof(*res->h_addr_list)); + if (res->h_addr_list == NULL) { + freehostent (res); + return NULL; + } + for (i = 0; i < n + 1; ++i) { + res->h_addr_list[i] = NULL; + } + for (i = 0; i < n; ++i) { + res->h_addr_list[i] = malloc (h->h_length); + if (res->h_addr_list[i] == NULL) { + freehostent (res); + return NULL; + } + memcpy (res->h_addr_list[i], h->h_addr_list[i], h->h_length); + } + return res; +} + diff --git a/lib/roken/freehostent.c b/lib/roken/freehostent.c new file mode 100644 index 000000000..6fbd61d5b --- /dev/null +++ b/lib/roken/freehostent.c @@ -0,0 +1,67 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include +RCSID("$Id$"); +#endif + +#include "roken.h" + +/* + * free a malloced hostent + */ + +void +freehostent (struct hostent *h) +{ + char **p; + + free (h->h_name); + if (h->h_aliases != NULL) { + for (p = h->h_aliases; *p != NULL; ++p) + free (*p); + free (h->h_aliases); + } + if (h->h_addr_list != NULL) { + for (p = h->h_addr_list; *p != NULL; ++p) + free (*p); + free (h->h_addr_list); + } + free (h); +} diff --git a/lib/roken/getipnodebyaddr.c b/lib/roken/getipnodebyaddr.c new file mode 100644 index 000000000..dfa96a6ff --- /dev/null +++ b/lib/roken/getipnodebyaddr.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include +RCSID("$Id$"); +#endif + +#include "roken.h" + +/* + * lookup `src, len' (address family `af') in DNS and return a pointer + * to a malloced struct hostent or NULL. + */ + +struct hostent * +getipnodebyaddr (const void *src, size_t len, int af, int *error_num) +{ + struct hostent *tmp; + + tmp = gethostbyaddr (src, len, af); + if (tmp == NULL) { + switch (h_errno) { + case HOST_NOT_FOUND : + case TRY_AGAIN : + case NO_RECOVERY : + *error_num = h_errno; + break; + case NO_DATA : + *error_num = NO_ADDRESS; + break; + default : + *error_num = NO_RECOVERY; + break; + } + return NULL; + } + tmp = copyhostent (tmp); + if (tmp == NULL) { + *error_num = TRY_AGAIN; + return NULL; + } + return tmp; +} diff --git a/lib/roken/getipnodebyname.c b/lib/roken/getipnodebyname.c new file mode 100644 index 000000000..494a2244d --- /dev/null +++ b/lib/roken/getipnodebyname.c @@ -0,0 +1,87 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include +RCSID("$Id$"); +#endif + +#include "roken.h" + +#ifndef HAVE_H_ERRNO +static int h_errno = NO_RECOVERY; +#endif + +/* + * lookup `name' (address family `af') in DNS and return a pointer + * to a malloced struct hostent or NULL. + */ + +struct hostent * +getipnodebyname (const char *name, int af, int flags, int *error_num) +{ + struct hostent *tmp; + + if (af != AF_INET) { + *error_num = NO_ADDRESS; + return NULL; + } + tmp = gethostbyname (name); + if (tmp == NULL) { + switch (h_errno) { + case HOST_NOT_FOUND : + case TRY_AGAIN : + case NO_RECOVERY : + *error_num = h_errno; + break; + case NO_DATA : + *error_num = NO_ADDRESS; + break; + default : + *error_num = NO_RECOVERY; + break; + } + return NULL; + } + tmp = copyhostent (tmp); + if (tmp == NULL) { + *error_num = TRY_AGAIN; + return NULL; + } + return tmp; +}