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kore/src/accesslog.c

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/*
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* Copyright (c) 2013-2018 Joris Vink <joris@coders.se>
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*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/socket.h>
#include <poll.h>
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#include <time.h>
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#include "kore.h"
#include "http.h"
struct kore_log_packet {
u_int8_t method;
int status;
size_t length;
int family;
u_int8_t addr[sizeof(struct in6_addr)];
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char host[KORE_DOMAINNAME_LEN];
char path[HTTP_URI_LEN];
char agent[HTTP_USERAGENT_LEN];
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char referer[HTTP_REFERER_LEN];
#if !defined(KORE_NO_TLS)
char cn[X509_CN_LENGTH];
#endif
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};
void
kore_accesslog_init(void)
{
}
void
kore_accesslog_worker_init(void)
{
kore_domain_closelogs();
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}
int
kore_accesslog_write(const void *data, u_int32_t len)
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{
int l;
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time_t now;
struct tm *tm;
ssize_t sent;
struct kore_domain *dom;
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struct kore_log_packet logpacket;
char *method, *buf, *cn;
char addr[INET6_ADDRSTRLEN], tbuf[128];
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if (len != sizeof(struct kore_log_packet))
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return (KORE_RESULT_ERROR);
(void)memcpy(&logpacket, data, sizeof(logpacket));
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if ((dom = kore_domain_lookup(logpacket.host)) == NULL) {
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kore_log(LOG_WARNING,
"got accesslog packet for unknown domain: %s",
logpacket.host);
return (KORE_RESULT_OK);
}
switch (logpacket.method) {
case HTTP_METHOD_GET:
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method = "GET";
break;
case HTTP_METHOD_POST:
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method = "POST";
break;
case HTTP_METHOD_PUT:
method = "PUT";
break;
case HTTP_METHOD_DELETE:
method = "DELETE";
break;
case HTTP_METHOD_HEAD:
method = "HEAD";
break;
case HTTP_METHOD_PATCH:
method = "PATCH";
break;
default:
method = "UNKNOWN";
break;
}
cn = "-";
#if !defined(KORE_NO_TLS)
if (logpacket.cn[0] != '\0')
cn = logpacket.cn;
#endif
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if (logpacket.family != AF_UNIX) {
if (inet_ntop(logpacket.family, &(logpacket.addr),
addr, sizeof(addr)) == NULL)
(void)kore_strlcpy(addr, "-", sizeof(addr));
} else {
(void)kore_strlcpy(addr, "unix-socket", sizeof(addr));
}
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time(&now);
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tm = localtime(&now);
(void)strftime(tbuf, sizeof(tbuf), "%d/%b/%Y:%H:%M:%S %z", tm);
l = asprintf(&buf,
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"%s - %s [%s] \"%s %s HTTP/1.1\" %d %zu \"%s\" \"%s\"\n",
addr, cn, tbuf, method, logpacket.path, logpacket.status,
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logpacket.length, logpacket.referer, logpacket.agent);
if (l == -1) {
kore_log(LOG_WARNING,
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"kore_accesslog_write(): asprintf(): %s", errno_s);
return (KORE_RESULT_ERROR);
}
sent = write(dom->accesslog, buf, l);
if (sent == -1) {
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free(buf);
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kore_log(LOG_WARNING,
"kore_accesslog_write(): write(): %s", errno_s);
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return (KORE_RESULT_ERROR);
}
if (sent != l)
kore_log(LOG_WARNING, "kore_accesslog_write(): short write");
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free(buf);
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return (KORE_RESULT_OK);
}
void
kore_accesslog(struct http_request *req)
{
struct kore_log_packet logpacket;
logpacket.family = req->owner->family;
switch (logpacket.family) {
case AF_INET:
memcpy(logpacket.addr,
&(req->owner->addr.ipv4.sin_addr),
sizeof(req->owner->addr.ipv4.sin_addr));
break;
case AF_INET6:
memcpy(logpacket.addr,
&(req->owner->addr.ipv6.sin6_addr),
sizeof(req->owner->addr.ipv6.sin6_addr));
break;
default:
break;
}
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logpacket.status = req->status;
logpacket.method = req->method;
logpacket.length = req->content_length;
if (kore_strlcpy(logpacket.host,
req->host, sizeof(logpacket.host)) >= sizeof(logpacket.host))
kore_log(LOG_NOTICE, "kore_accesslog: host truncated");
if (kore_strlcpy(logpacket.path,
req->path, sizeof(logpacket.path)) >= sizeof(logpacket.path))
kore_log(LOG_NOTICE, "kore_accesslog: path truncated");
if (req->agent != NULL) {
if (kore_strlcpy(logpacket.agent, req->agent,
sizeof(logpacket.agent)) >= sizeof(logpacket.agent))
kore_log(LOG_NOTICE, "kore_accesslog: agent truncated");
} else {
(void)kore_strlcpy(logpacket.agent, "-",
sizeof(logpacket.agent));
}
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if (req->referer != NULL) {
if (kore_strlcpy(logpacket.referer, req->referer,
sizeof(logpacket.referer)) >= sizeof(logpacket.referer)) {
kore_log(LOG_NOTICE,
"kore_accesslog: referer truncated");
}
} else {
(void)kore_strlcpy(logpacket.referer, "-",
sizeof(logpacket.referer));
}
#if !defined(KORE_NO_TLS)
memset(logpacket.cn, '\0', sizeof(logpacket.cn));
if (req->owner->cert != NULL) {
if (X509_GET_CN(req->owner->cert,
logpacket.cn, sizeof(logpacket.cn)) == -1) {
kore_log(LOG_WARNING, "client cert without a CN?");
}
}
#endif
kore_msg_send(KORE_MSG_PARENT,
KORE_MSG_ACCESSLOG, &logpacket, sizeof(logpacket));
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}