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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "httpd.h"
#include "http_config.h"
#include "http_log.h"
module agent_log_module;
static int xfer_flags = (O_WRONLY | O_APPEND | O_CREAT);
#ifdef OS2
/* OS/2 dosen't support users and groups */
static mode_t xfer_mode = (S_IREAD | S_IWRITE);
#else
static mode_t xfer_mode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
#endif
typedef struct {
char *fname;
int agent_fd;
} agent_log_state;
static void *make_agent_log_state(pool *p, server_rec *s)
{
agent_log_state *cls =
(agent_log_state *) ap_palloc(p, sizeof(agent_log_state));
cls->fname = "";
cls->agent_fd = -1;
return (void *) cls;
}
static const char *set_agent_log(cmd_parms *parms, void *dummy, char *arg)
{
agent_log_state *cls = ap_get_module_config(parms->server->module_config,
&agent_log_module);
cls->fname = arg;
return NULL;
}
static const command_rec agent_log_cmds[] =
{
{"AgentLog", set_agent_log, NULL, RSRC_CONF, TAKE1,
"the filename of the agent log"},
{NULL}
};
static void open_agent_log(server_rec *s, pool *p)
{
agent_log_state *cls = ap_get_module_config(s->module_config,
&agent_log_module);
char *fname = ap_server_root_relative(p, cls->fname);
if (cls->agent_fd > 0)
return; /* virtual log shared w/main server */
if (*cls->fname == '|') {
piped_log *pl;
pl = ap_open_piped_log(p, cls->fname + 1);
if (pl == NULL) {
ap_log_error(APLOG_MARK, APLOG_ERR, s,
"couldn't spawn agent log pipe");
exit(1);
}
cls->agent_fd = ap_piped_log_write_fd(pl);
}
else if (*cls->fname != '\0') {
if ((cls->agent_fd = ap_popenf_ex(p, fname, xfer_flags, xfer_mode, 1))
< 0) {
ap_log_error(APLOG_MARK, APLOG_ERR, s,
"could not open agent log file %s.", fname);
exit(1);
}
}
}
static void init_agent_log(server_rec *s, pool *p)
{
for (; s; s = s->next)
open_agent_log(s, p);
}
static int agent_log_transaction(request_rec *orig)
{
agent_log_state *cls = ap_get_module_config(orig->server->module_config,
&agent_log_module);
char str[HUGE_STRING_LEN];
const char *agent;
request_rec *r;
if (cls->agent_fd < 0)
return OK;
for (r = orig; r->next; r = r->next)
continue;
if (*cls->fname == '\0') /* Don't log agent */
return DECLINED;
agent = ap_table_get(orig->headers_in, "User-Agent");
if (agent != NULL) {
ap_snprintf(str, sizeof(str), "%s\n", agent);
write(cls->agent_fd, str, strlen(str));
}
return OK;
}
module agent_log_module =
{
STANDARD_MODULE_STUFF,
init_agent_log, /* initializer */
NULL, /* create per-dir config */
NULL, /* merge per-dir config */
make_agent_log_state, /* server config */
NULL, /* merge server config */
agent_log_cmds, /* command table */
NULL, /* handlers */
NULL, /* filename translation */
NULL, /* check_user_id */
NULL, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
NULL, /* fixups */
agent_log_transaction, /* logger */
NULL, /* header parser */
NULL, /* child_init */
NULL, /* child_exit */
NULL /* post read-request */
};
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