1 /* This file is part of Pazpar2.
2 Copyright (C) Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "sel_thread.h"
32 #include <sys/types.h>
34 #include <sys/socket.h>
46 #include <yaz/tcpip.h>
49 #include "connection.h"
52 /* Only use a threaded resolver on Unix that offers getaddrinfo.
53 gethostbyname is NOT reentrant.
56 #define USE_THREADED_RESOLVER 1
60 char *hostport; /* hostport to be resolved in separate thread */
61 char *ipport; /* result or NULL if it could not be resolved */
62 struct host *host; /* host that we're dealing with - mother thread */
63 iochan_man_t iochan_man; /* iochan manager */
67 static int log_level = YLOG_LOG;
69 static void perform_getaddrinfo(struct work *w)
71 struct addrinfo hints, *res;
77 hints.ai_family = AF_UNSPEC;
78 hints.ai_socktype = SOCK_STREAM;
79 hints.ai_protocol = 0;
82 hints.ai_canonname = NULL;
85 if (!strncmp(w->hostport, "http://", 7))
88 strncpy(host, w->hostport + 7, sizeof(host)-1);
90 else if (!strncmp(w->hostport, "https://", 8))
93 strncpy(host, w->hostport + 8, sizeof(host)-1);
97 strncpy(host, w->hostport, sizeof(host)-1);
99 host[sizeof(host)-1] = 0;
100 if ((cp = strrchr(host, ':')))
105 error = getaddrinfo(host, port, &hints, &res);
108 yaz_log(YLOG_WARN, "Failed to resolve %s: %s",
109 w->hostport, gai_strerror(error));
115 if (getnameinfo((struct sockaddr *) res->ai_addr, res->ai_addrlen,
116 n_host, sizeof(n_host)-1,
118 NI_NUMERICHOST) == 0)
120 w->ipport = xmalloc(strlen(n_host) + (port ? strlen(port) : 0) + 2);
121 strcpy(w->ipport, n_host);
124 strcat(w->ipport, ":");
125 strcat(w->ipport, port);
127 yaz_log(log_level, "Resolved %s -> %s", w->hostport, w->ipport);
131 yaz_log(YLOG_LOG|YLOG_ERRNO, "getnameinfo failed for %s",
138 static void work_handler(void *vp)
142 int sec = 0; /* >0 for debugging/testing purposes */
145 yaz_log(log_level, "waiting %d seconds", sec);
150 perform_getaddrinfo(w);
153 #if USE_THREADED_RESOLVER
154 void iochan_handler(struct iochan *i, int event)
156 sel_thread_t p = iochan_getdata(i);
158 if (event & EVENT_INPUT)
160 struct work *w = sel_thread_result(p);
161 w->host->ipport = w->ipport;
162 w->host->error = w->error;
163 connect_resolver_host(w->host, w->iochan_man);
168 static sel_thread_t resolver_thread = 0;
170 static void getaddrinfo_start(iochan_man_t iochan_man)
173 sel_thread_t p = resolver_thread =
174 sel_thread_create(work_handler, 0 /* work_destroy */, &fd,
175 3 /* no of resolver threads */);
178 yaz_log(YLOG_FATAL|YLOG_ERRNO, "sel_create_create failed");
183 IOCHAN chan = iochan_create(fd, iochan_handler, EVENT_INPUT,
184 "getaddrinfo_socket");
185 iochan_setdata(chan, p);
186 iochan_add(iochan_man, chan);
188 yaz_log(log_level, "resolver start");
193 int host_getaddrinfo(struct host *host, iochan_man_t iochan_man)
195 struct work *w = xmalloc(sizeof(*w));
196 int use_thread = 1; /* =0 to disable threading entirely */
198 w->hostport = host->tproxy ? host->tproxy : host->proxy;
201 w->iochan_man = iochan_man;
203 #if USE_THREADED_RESOLVER
206 if (resolver_thread == 0)
207 getaddrinfo_start(iochan_man);
208 assert(resolver_thread);
209 sel_thread_add(resolver_thread, w);
213 perform_getaddrinfo(w);
214 host->ipport = w->ipport;
215 host->error = w->error;
225 * c-file-style: "Stroustrup"
226 * indent-tabs-mode: nil
228 * vim: shiftwidth=4 tabstop=8 expandtab