struct http_session *http_session_create(struct conf_service *service,
http_sessions_t http_sessions,
unsigned int sesid)
{
NMEM nmem = nmem_create();
struct http_session *r = nmem_malloc(nmem, sizeof(*r));
char tmp_str[50];
sprintf(tmp_str, "session#%u", sesid);
r->psession = new_session(nmem, service, sesid);
r->session_id = sesid;
r->timestamp = 0;
r->nmem = nmem;
r->destroy_counter = r->activity_counter = 0;
r->http_sessions = http_sessions;
yaz_mutex_enter(http_sessions->mutex);
r->next = http_sessions->session_list;
http_sessions->session_list = r;
yaz_mutex_leave(http_sessions->mutex);
r->timeout_iochan = iochan_create(-1, session_timeout, 0, "http_session_timeout");
iochan_setdata(r->timeout_iochan, r);
yaz_log(http_sessions->log_level, "Session %u created. timeout chan=%p timeout=%d", sesid, r->timeout_iochan, service->session_timeout);
iochan_settimeout(r->timeout_iochan, service->session_timeout);
iochan_add(service->server->iochan_man, r->timeout_iochan);
http_session_use(1);
return r;
}
/* Accept a new command connection */
static void http_accept(IOCHAN i, int event)
{
struct sockaddr_in addr;
int fd = iochan_getfd(i);
socklen_t len;
int s;
IOCHAN c;
struct http_channel *ch;
struct conf_server *server = iochan_getdata(i);
len = sizeof addr;
if ((s = accept(fd, (struct sockaddr *) &addr, &len)) < 0)
{
yaz_log(YLOG_WARN|YLOG_ERRNO, "accept");
return;
}
enable_nonblock(s);
yaz_log(YLOG_DEBUG, "New command connection");
c = iochan_create(s, http_io, EVENT_INPUT | EVENT_EXCEPT, "http_session_socket");
ch = http_channel_create(server->http_server, inet_ntoa(addr.sin_addr),
server);
ch->iochan = c;
iochan_setdata(c, ch);
iochan_add(server->iochan_man, c);
}
/*
* Set up a listening endpoint, and give it to the event-handler.
*/
static int add_listener(char *where, int listen_id)
{
COMSTACK l;
void *ap;
IOCHAN lst = NULL;
const char *mode;
if (control_block.dynamic)
mode = "dynamic";
else if (control_block.threads)
mode = "threaded";
else
mode = "static";
yaz_log(log_server, "Adding %s listener on %s id=%d", mode, where,
listen_id);
l = cs_create_host(where, 2, &ap);
if (!l)
{
yaz_log(YLOG_FATAL, "Failed to listen on %s", where);
return -1;
}
if (*control_block.cert_fname)
cs_set_ssl_certificate_file(l, control_block.cert_fname);
if (cs_bind(l, ap, CS_SERVER) < 0)
{
if (cs_errno(l) == CSYSERR)
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to bind to %s", where);
else
yaz_log(YLOG_FATAL, "Failed to bind to %s: %s", where,
cs_strerror(l));
cs_close(l);
return -1;
}
if (!(lst = iochan_create(cs_fileno(l), listener, EVENT_INPUT |
EVENT_EXCEPT, listen_id)))
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create IOCHAN-type");
cs_close(l);
return -1;
}
iochan_setdata(lst, l); /* user-defined data for listener is COMSTACK */
l->user = lst; /* user-defined data for COMSTACK is listener chan */
/* Add listener to chain */
lst->next = pListener;
pListener = lst;
return 0; /* OK */
}
/** brief use the fd for something */
static void test_for_real_work(int no_threads)
{
int thread_fd;
sel_thread_t p = sel_thread_create(work_handler, work_destroy,
&thread_fd, no_threads);
YAZ_CHECK(p);
if (p)
{
iochan_man_t chan_man = iochan_man_create(10);
IOCHAN chan = iochan_create(thread_fd, iochan_handler,
EVENT_INPUT|EVENT_TIMEOUT, "test_chan");
iochan_settimeout(chan, 1);
iochan_setdata(chan, p);
iochan_add(chan_man, chan);
iochan_man_events(chan_man);
sel_thread_destroy(p);
iochan_man_destroy(&chan_man);
}
}
static void getaddrinfo_start(iochan_man_t iochan_man)
{
int fd;
sel_thread_t p = resolver_thread =
sel_thread_create(work_handler, 0 /* work_destroy */, &fd,
3 /* no of resolver threads */);
if (!p)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "sel_create_create failed");
exit(1);
}
else
{
IOCHAN chan = iochan_create(fd, iochan_handler, EVENT_INPUT,
"getaddrinfo_socket");
iochan_setdata(chan, p);
iochan_add(iochan_man, chan);
}
yaz_log(log_level, "resolver start");
resolver_thread = p;
}
static void inetd_connection(int what)
{
COMSTACK line;
IOCHAN chan;
association *assoc;
char *addr;
if ((line = cs_createbysocket(0, tcpip_type, 0, what)))
{
if ((chan = iochan_create(cs_fileno(line), ir_session, EVENT_INPUT,
0)))
{
if ((assoc = create_association(chan, line,
control_block.apdufile)))
{
iochan_setdata(chan, assoc);
iochan_settimeout(chan, 60);
addr = cs_addrstr(line);
yaz_log(log_sessiondetail, "Inetd association from %s",
addr ? addr : "[UNKNOWN]");
assoc->cs_get_mask = EVENT_INPUT;
}
else
{
yaz_log(YLOG_FATAL, "Failed to create association structure");
}
chan->next = pListener;
pListener = chan;
}
else
{
yaz_log(YLOG_FATAL, "Failed to create iochan");
}
}
else
{
yaz_log(YLOG_ERRNO|YLOG_FATAL, "Failed to create comstack on socket 0");
}
}
static int http_proxy(struct http_request *rq)
{
struct http_channel *c = rq->channel;
struct http_proxy *p = c->proxy;
struct http_header *hp;
struct http_buf *requestbuf;
char server_port[16] = "";
struct conf_server *ser = c->server;
if (!p) // This is a new connection. Create a proxy channel
{
int sock;
struct protoent *pe;
int one = 1;
if (!(pe = getprotobyname("tcp"))) {
abort();
}
if ((sock = socket(PF_INET, SOCK_STREAM, pe->p_proto)) < 0)
{
yaz_log(YLOG_WARN|YLOG_ERRNO, "socket");
return -1;
}
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)
&one, sizeof(one)) < 0)
abort();
enable_nonblock(sock);
if (connect(sock, (struct sockaddr *)
c->server->http_server->proxy_addr,
sizeof(*c->server->http_server->proxy_addr)) < 0)
{
if (!is_inprogress())
{
yaz_log(YLOG_WARN|YLOG_ERRNO, "Proxy connect");
return -1;
}
}
p = xmalloc(sizeof(struct http_proxy));
p->oqueue = 0;
p->channel = c;
p->first_response = 1;
c->proxy = p;
// We will add EVENT_OUTPUT below
p->iochan = iochan_create(sock, proxy_io, EVENT_INPUT, "http_proxy");
iochan_setdata(p->iochan, p);
iochan_add(ser->iochan_man, p->iochan);
}
// Do _not_ modify Host: header, just checking it's existence
if (!http_lookup_header(rq->headers, "Host"))
{
yaz_log(YLOG_WARN, "Failed to find Host header in proxy");
return -1;
}
// Add new header about paraz2 version, host, remote client address, etc.
{
char server_via[128];
hp = rq->headers;
hp = http_header_append(c, hp,
"X-Pazpar2-Version", PACKAGE_VERSION);
hp = http_header_append(c, hp,
"X-Pazpar2-Server-Host", ser->host);
sprintf(server_port, "%d", ser->port);
hp = http_header_append(c, hp,
"X-Pazpar2-Server-Port", server_port);
yaz_snprintf(server_via, sizeof(server_via),
"1.1 %s:%s (%s/%s)",
ser->host ? ser->host : "@",
server_port, PACKAGE_NAME, PACKAGE_VERSION);
hp = http_header_append(c, hp, "Via" , server_via);
hp = http_header_append(c, hp, "X-Forwarded-For", c->addr);
}
requestbuf = http_serialize_request(rq);
http_buf_enqueue(&p->oqueue, requestbuf);
iochan_setflag(p->iochan, EVENT_OUTPUT);
return 0;
}
/* Create a http-channel listener, syntax [host:]port */
int http_init(const char *addr, struct conf_server *server,
const char *record_fname)
{
IOCHAN c;
int l;
struct protoent *p;
struct sockaddr_in myaddr;
int one = 1;
const char *pp;
short port;
FILE *record_file = 0;
yaz_log(YLOG_LOG, "HTTP listener %s", addr);
if (record_fname)
{
record_file = fopen(record_fname, "wb");
if (!record_file)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "fopen %s", record_fname);
return 1;
}
}
memset(&myaddr, 0, sizeof myaddr);
myaddr.sin_family = AF_INET;
pp = strchr(addr, ':');
if (pp)
{
WRBUF w = wrbuf_alloc();
struct hostent *he;
wrbuf_write(w, addr, pp - addr);
wrbuf_puts(w, "");
he = gethostbyname(wrbuf_cstr(w));
wrbuf_destroy(w);
if (!he)
{
yaz_log(YLOG_FATAL, "Unable to resolve '%s'", addr);
return 1;
}
memcpy(&myaddr.sin_addr.s_addr, he->h_addr_list[0], he->h_length);
port = atoi(pp + 1);
}
else
{
port = atoi(addr);
myaddr.sin_addr.s_addr = INADDR_ANY;
}
myaddr.sin_port = htons(port);
if (!(p = getprotobyname("tcp"))) {
return 1;
}
if ((l = socket(PF_INET, SOCK_STREAM, p->p_proto)) < 0)
yaz_log(YLOG_FATAL|YLOG_ERRNO, "socket");
if (setsockopt(l, SOL_SOCKET, SO_REUSEADDR, (char*)
&one, sizeof(one)) < 0)
return 1;
if (bind(l, (struct sockaddr *) &myaddr, sizeof myaddr) < 0)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "bind");
return 1;
}
if (listen(l, SOMAXCONN) < 0)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "listen");
return 1;
}
server->http_server = http_server_create();
server->http_server->record_file = record_file;
server->http_server->listener_socket = l;
c = iochan_create(l, http_accept, EVENT_INPUT | EVENT_EXCEPT, "http_server");
iochan_setdata(c, server);
iochan_add(server->iochan_man, c);
return 0;
}
static int connection_connect(struct connection *con, iochan_man_t iochan_man)
{
struct host *host = connection_get_host(con);
ZOOM_options zoptions = ZOOM_options_create();
const char *auth;
const char *charset;
const char *sru;
const char *sru_version = 0;
struct session_database *sdb = client_get_database(con->client);
const char *apdulog = session_setting_oneval(sdb, PZ_APDULOG);
assert(con);
ZOOM_options_set(zoptions, "async", "1");
ZOOM_options_set(zoptions, "implementationName", PACKAGE_NAME);
ZOOM_options_set(zoptions, "implementationVersion", VERSION);
if ((charset = session_setting_oneval(sdb, PZ_NEGOTIATION_CHARSET)))
ZOOM_options_set(zoptions, "charset", charset);
assert(host->ipport);
if (host->proxy)
{
yaz_log(YLOG_LOG, "proxy=%s", host->ipport);
ZOOM_options_set(zoptions, "proxy", host->ipport);
}
else
{
assert(host->tproxy);
yaz_log(YLOG_LOG, "tproxy=%s", host->ipport);
ZOOM_options_set(zoptions, "tproxy", host->ipport);
}
if (apdulog && *apdulog)
ZOOM_options_set(zoptions, "apdulog", apdulog);
if ((auth = session_setting_oneval(sdb, PZ_AUTHENTICATION)))
ZOOM_options_set(zoptions, "user", auth);
if ((sru = session_setting_oneval(sdb, PZ_SRU)) && *sru)
ZOOM_options_set(zoptions, "sru", sru);
if ((sru_version = session_setting_oneval(sdb, PZ_SRU_VERSION))
&& *sru_version)
ZOOM_options_set(zoptions, "sru_version", sru_version);
if (!(con->link = ZOOM_connection_create(zoptions)))
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create ZOOM Connection");
ZOOM_options_destroy(zoptions);
return -1;
}
if (sru && *sru)
{
char http_hostport[512];
strcpy(http_hostport, "http://");
strcat(http_hostport, host->url);
yaz_log(YLOG_LOG, "SRU connect to : %s", http_hostport);
ZOOM_connection_connect(con->link, http_hostport, 0);
}
else
{
ZOOM_connection_connect(con->link, host->url, 0);
}
con->iochan = iochan_create(-1, connection_handler, 0, "connection_socket");
con->state = Conn_Connecting;
iochan_settimeout(con->iochan, con->operation_timeout);
iochan_setdata(con->iochan, con);
iochan_add(iochan_man, con->iochan);
client_set_state(con->client, Client_Connecting);
ZOOM_options_destroy(zoptions);
return 0;
}
static void *new_session(void *vp)
{
char *a;
association *newas;
IOCHAN new_chan;
COMSTACK new_line = (COMSTACK) vp;
IOCHAN parent_chan = (IOCHAN) new_line->user;
unsigned cs_get_mask, cs_accept_mask, mask =
((new_line->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
((new_line->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
if (mask)
{
cs_accept_mask = mask; /* accept didn't complete */
cs_get_mask = 0;
}
else
{
cs_accept_mask = 0; /* accept completed. */
cs_get_mask = mask = EVENT_INPUT;
}
if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session, mask,
parent_chan->chan_id)))
{
yaz_log(YLOG_FATAL, "Failed to create iochan");
return 0;
}
if (!(newas = create_association(new_chan, new_line,
control_block.apdufile)))
{
yaz_log(YLOG_FATAL, "Failed to create new assoc.");
return 0;
}
newas->cs_accept_mask = cs_accept_mask;
newas->cs_get_mask = cs_get_mask;
iochan_setdata(new_chan, newas);
iochan_settimeout(new_chan, 60);
#if 1
a = cs_addrstr(new_line);
#else
a = 0;
#endif
yaz_log_xml_errors(0, YLOG_WARN);
yaz_log(log_session, "Session - OK %d %s %ld",
no_sessions, a ? a : "[Unknown]", (long) getpid());
if (max_sessions && no_sessions >= max_sessions)
control_block.one_shot = 1;
if (control_block.threads)
{
iochan_event_loop(&new_chan);
}
else
{
new_chan->next = pListener;
pListener = new_chan;
}
return 0;
}
/* WIN32 listener */
static void listener(IOCHAN h, int event)
{
COMSTACK line = (COMSTACK) iochan_getdata(h);
IOCHAN parent_chan = line->user;
association *newas;
int res;
HANDLE newHandle;
if (event == EVENT_INPUT)
{
COMSTACK new_line;
IOCHAN new_chan;
if ((res = cs_listen(line, 0, 0)) < 0)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "cs_listen failed");
return;
}
else if (res == 1)
return; /* incomplete */
yaz_log(YLOG_DEBUG, "listen ok");
new_line = cs_accept(line);
if (!new_line)
{
yaz_log(YLOG_FATAL, "Accept failed.");
return;
}
yaz_log(YLOG_DEBUG, "Accept ok");
if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session,
EVENT_INPUT, parent_chan->chan_id)))
{
yaz_log(YLOG_FATAL, "Failed to create iochan");
iochan_destroy(h);
return;
}
yaz_log(YLOG_DEBUG, "Creating association");
if (!(newas = create_association(new_chan, new_line,
control_block.apdufile)))
{
yaz_log(YLOG_FATAL, "Failed to create new assoc.");
iochan_destroy(h);
return;
}
newas->cs_get_mask = EVENT_INPUT;
newas->cs_put_mask = 0;
newas->cs_accept_mask = 0;
yaz_log(YLOG_DEBUG, "Setting timeout %d", control_block.idle_timeout);
iochan_setdata(new_chan, newas);
iochan_settimeout(new_chan, 60);
/* Now what we need todo is create a new thread with this iochan as
the parameter */
newHandle = (HANDLE) _beginthread(event_loop_thread, 0, new_chan);
if (newHandle == (HANDLE) -1)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create new thread.");
iochan_destroy(h);
return;
}
/* We successfully created the thread, so add it to the list */
statserv_add(newHandle, new_chan);
yaz_log(YLOG_DEBUG, "Created new thread, id = %ld iochan %p",(long) newHandle, new_chan);
iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
}
else
{
yaz_log(YLOG_FATAL, "Bad event on listener.");
iochan_destroy(h);
return;
}
}
