diff options
Diffstat (limited to 'debian/vendor-h2o/include/h2o/hostinfo.h')
-rw-r--r-- | debian/vendor-h2o/include/h2o/hostinfo.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/debian/vendor-h2o/include/h2o/hostinfo.h b/debian/vendor-h2o/include/h2o/hostinfo.h new file mode 100644 index 0000000..14ac30c --- /dev/null +++ b/debian/vendor-h2o/include/h2o/hostinfo.h @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2015 DeNA Co., Ltd., Kazuho Oku + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ +#ifndef h2o__hostinfo_h +#define h2o__hostinfo_h + +#include <arpa/inet.h> +#include <netdb.h> +#include <netinet/in.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <sys/types.h> +#include "h2o/multithread.h" + +typedef struct st_h2o_hostinfo_getaddr_req_t h2o_hostinfo_getaddr_req_t; + +typedef void (*h2o_hostinfo_getaddr_cb)(h2o_hostinfo_getaddr_req_t *req, const char *errstr, struct addrinfo *res, void *cbdata); + +extern size_t h2o_hostinfo_max_threads; + +/** + * dispatches a (possibly) asynchronous hostname lookup + */ +h2o_hostinfo_getaddr_req_t *h2o_hostinfo_getaddr(h2o_multithread_receiver_t *receiver, h2o_iovec_t name, h2o_iovec_t serv, + int family, int socktype, int protocol, int flags, h2o_hostinfo_getaddr_cb cb, + void *cbdata); +/** + * + */ +void h2o__hostinfo_getaddr_dispatch(h2o_hostinfo_getaddr_req_t *req); +/** + * cancels the request + */ +void h2o_hostinfo_getaddr_cancel(h2o_hostinfo_getaddr_req_t *req); + +/** + * function that receives and dispatches the responses + */ +void h2o_hostinfo_getaddr_receiver(h2o_multithread_receiver_t *receiver, h2o_linklist_t *messages); + +/** + * select one entry at random from the response + */ +static struct addrinfo *h2o_hostinfo_select_one(struct addrinfo *res); + +/** + * equiv. to inet_pton(AF_INET4) + */ +int h2o_hostinfo_aton(h2o_iovec_t host, struct in_addr *addr); + +/* inline defs */ + +inline struct addrinfo *h2o_hostinfo_select_one(struct addrinfo *res) +{ + if (res->ai_next == NULL) + return res; + + /* count the number of candidates */ + size_t i = 0; + struct addrinfo *ai = res; + do { + ++i; + } while ((ai = ai->ai_next) != NULL); + + /* choose one, distributed by rand() :-p */ + i = rand() % i; + for (ai = res; i != 0; ai = ai->ai_next, --i) + ; + return ai; +} + +#endif |