diff options
Diffstat (limited to 'web/server/h2o/libh2o/lib/common/hostinfo.c')
-rw-r--r-- | web/server/h2o/libh2o/lib/common/hostinfo.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/web/server/h2o/libh2o/lib/common/hostinfo.c b/web/server/h2o/libh2o/lib/common/hostinfo.c deleted file mode 100644 index 7b481e296..000000000 --- a/web/server/h2o/libh2o/lib/common/hostinfo.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * 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. - */ -#include "h2o/hostinfo.h" - -struct st_h2o_hostinfo_getaddr_req_t { - h2o_multithread_receiver_t *_receiver; - h2o_hostinfo_getaddr_cb _cb; - void *cbdata; - h2o_linklist_t _pending; - union { - struct { - char *name; - char *serv; - struct addrinfo hints; - } _in; - struct { - h2o_multithread_message_t message; - const char *errstr; - struct addrinfo *ai; - } _out; - }; -}; - -static struct { - pthread_mutex_t mutex; - pthread_cond_t cond; - h2o_linklist_t pending; /* anchor of h2o_hostinfo_getaddr_req_t::_pending */ - size_t num_threads; - size_t num_threads_idle; -} queue = {PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, {&queue.pending, &queue.pending}, 0, 0}; - -size_t h2o_hostinfo_max_threads = 1; - -static void lookup_and_respond(h2o_hostinfo_getaddr_req_t *req) -{ - struct addrinfo *res; - - int ret = getaddrinfo(req->_in.name, req->_in.serv, &req->_in.hints, &res); - req->_out.message = (h2o_multithread_message_t){{NULL}}; - if (ret != 0) { - req->_out.errstr = gai_strerror(ret); - req->_out.ai = NULL; - } else { - req->_out.errstr = NULL; - req->_out.ai = res; - } - - h2o_multithread_send_message(req->_receiver, &req->_out.message); -} - -static void *lookup_thread_main(void *_unused) -{ - pthread_mutex_lock(&queue.mutex); - - while (1) { - --queue.num_threads_idle; - while (!h2o_linklist_is_empty(&queue.pending)) { - h2o_hostinfo_getaddr_req_t *req = H2O_STRUCT_FROM_MEMBER(h2o_hostinfo_getaddr_req_t, _pending, queue.pending.next); - h2o_linklist_unlink(&req->_pending); - pthread_mutex_unlock(&queue.mutex); - lookup_and_respond(req); - pthread_mutex_lock(&queue.mutex); - } - ++queue.num_threads_idle; - pthread_cond_wait(&queue.cond, &queue.mutex); - } - - h2o_fatal("unreachable"); - return NULL; -} - -static void create_lookup_thread(void) -{ - pthread_t tid; - pthread_attr_t attr; - int ret; - - pthread_attr_init(&attr); - pthread_attr_setdetachstate(&attr, 1); - pthread_attr_setstacksize(&attr, 100 * 1024); - if ((ret = pthread_create(&tid, NULL, lookup_thread_main, NULL)) != 0) { - if (queue.num_threads == 0) { - fprintf(stderr, "failed to start first thread for getaddrinfo:%s\n", strerror(ret)); - abort(); - } else { - perror("pthread_create(for getaddrinfo)"); - } - return; - } - - ++queue.num_threads; - ++queue.num_threads_idle; -} - -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) -{ - h2o_hostinfo_getaddr_req_t *req = h2o_mem_alloc(sizeof(*req) + name.len + 1 + serv.len + 1); - req->_receiver = receiver; - req->_cb = cb; - req->cbdata = cbdata; - req->_pending = (h2o_linklist_t){NULL}; - req->_in.name = (char *)req + sizeof(*req); - memcpy(req->_in.name, name.base, name.len); - req->_in.name[name.len] = '\0'; - req->_in.serv = req->_in.name + name.len + 1; - memcpy(req->_in.serv, serv.base, serv.len); - req->_in.serv[serv.len] = '\0'; - memset(&req->_in.hints, 0, sizeof(req->_in.hints)); - req->_in.hints.ai_family = family; - req->_in.hints.ai_socktype = socktype; - req->_in.hints.ai_protocol = protocol; - req->_in.hints.ai_flags = flags; - - h2o__hostinfo_getaddr_dispatch(req); - - return req; -} - -void h2o__hostinfo_getaddr_dispatch(h2o_hostinfo_getaddr_req_t *req) -{ - pthread_mutex_lock(&queue.mutex); - - h2o_linklist_insert(&queue.pending, &req->_pending); - - if (queue.num_threads_idle == 0 && queue.num_threads < h2o_hostinfo_max_threads) - create_lookup_thread(); - - pthread_cond_signal(&queue.cond); - pthread_mutex_unlock(&queue.mutex); -} - -void h2o_hostinfo_getaddr_cancel(h2o_hostinfo_getaddr_req_t *req) -{ - int should_free = 0; - - pthread_mutex_lock(&queue.mutex); - - if (h2o_linklist_is_linked(&req->_pending)) { - h2o_linklist_unlink(&req->_pending); - should_free = 1; - } else { - req->_cb = NULL; - } - - pthread_mutex_unlock(&queue.mutex); - - if (should_free) - free(req); -} - -void h2o_hostinfo_getaddr_receiver(h2o_multithread_receiver_t *receiver, h2o_linklist_t *messages) -{ - while (!h2o_linklist_is_empty(messages)) { - h2o_hostinfo_getaddr_req_t *req = H2O_STRUCT_FROM_MEMBER(h2o_hostinfo_getaddr_req_t, _out.message.link, messages->next); - h2o_linklist_unlink(&req->_out.message.link); - h2o_hostinfo_getaddr_cb cb = req->_cb; - if (cb != NULL) { - req->_cb = NULL; - cb(req, req->_out.errstr, req->_out.ai, req->cbdata); - } - if (req->_out.ai != NULL) - freeaddrinfo(req->_out.ai); - free(req); - } -} - -static const char *fetch_aton_digit(const char *p, const char *end, unsigned char *value) -{ - size_t ndigits = 0; - int v = 0; - - while (p != end && ('0' <= *p && *p <= '9')) { - v = v * 10 + *p++ - '0'; - ++ndigits; - } - if (!(1 <= ndigits && ndigits <= 3)) - return NULL; - if (v > 255) - return NULL; - *value = (unsigned char)v; - return p; -} - -int h2o_hostinfo_aton(h2o_iovec_t host, struct in_addr *addr) -{ - union { - int32_t n; - unsigned char c[4]; - } value; - const char *p = host.base, *end = p + host.len; - size_t ndots = 0; - - while (1) { - if ((p = fetch_aton_digit(p, end, value.c + ndots)) == NULL) - return -1; - if (ndots == 3) - break; - if (p == end || !(*p == '.')) - return -1; - ++p; - ++ndots; - } - if (p != end) - return -1; - - addr->s_addr = value.n; - return 0; -} |