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src.rivoreo.one / net / nginx-mbedtls / f54820ceaff145885e2b51690cd037f85748ddba / . / src / http / modules / ngx_http_log_module.c
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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>
typedef struct {
ngx_str_t name;
ngx_array_t *ops; /* array of ngx_http_log_op_t */
} ngx_http_log_fmt_t;
typedef struct {
ngx_array_t formats; /* array of ngx_http_log_fmt_t */
ngx_uint_t combined_used; /* unsigned combined_used:1 */
} ngx_http_log_main_conf_t;
typedef struct {
ngx_open_file_t *file;
time_t disk_full_time;
ngx_array_t *ops; /* array of ngx_http_log_op_t */
} ngx_http_log_t;
typedef struct {
ngx_array_t *logs; /* array of ngx_http_log_t */
ngx_uint_t off; /* unsigned off:1 */
} ngx_http_log_loc_conf_t;
typedef struct {
ngx_str_t name;
size_t len;
ngx_http_log_op_run_pt run;
} ngx_http_log_var_t;
static u_char *ngx_http_log_addr(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_time(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_msec(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_request_time(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_status(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_bytes_sent(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static u_char *ngx_http_log_body_bytes_sent(ngx_http_request_t *r,
u_char *buf, ngx_http_log_op_t *op);
static u_char *ngx_http_log_request_length(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static size_t ngx_http_log_request_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static ngx_int_t ngx_http_log_header_in_compile(ngx_conf_t *cf,
ngx_http_log_op_t *op, ngx_str_t *value);
static size_t ngx_http_log_header_in_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static size_t ngx_http_log_unknown_header_in_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r,
u_char *buf, ngx_http_log_op_t *op);
static ngx_int_t ngx_http_log_header_out_compile(ngx_conf_t *cf,
ngx_http_log_op_t *op, ngx_str_t *value);
static size_t ngx_http_log_header_out_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static size_t ngx_http_log_unknown_header_out_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r,
u_char *buf, ngx_http_log_op_t *op);
static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r,
u_char *buf, ngx_http_log_op_t *op);
static u_char *ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r,
u_char *buf, ngx_http_log_op_t *op);
static ngx_table_elt_t *ngx_http_log_unknown_header(ngx_list_t *headers,
ngx_str_t *value);
static ngx_int_t ngx_http_log_variable_compile(ngx_conf_t *cf,
ngx_http_log_op_t *op, ngx_str_t *value);
static size_t ngx_http_log_variable_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_log_variable(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op);
static ngx_int_t ngx_http_log_set_formats(ngx_conf_t *cf);
static void *ngx_http_log_create_main_conf(ngx_conf_t *cf);
static void *ngx_http_log_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent,
void *child);
static char *ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_log_compile_format(ngx_conf_t *cf,
ngx_array_t *ops, ngx_array_t *args, ngx_uint_t s);
static ngx_int_t ngx_http_log_init(ngx_conf_t *cf);
static ngx_command_t ngx_http_log_commands[] = {
{ ngx_string("log_format"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_2MORE,
ngx_http_log_set_format,
NGX_HTTP_MAIN_CONF_OFFSET,
0,
NULL },
{ ngx_string("access_log"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
|NGX_CONF_TAKE123,
ngx_http_log_set_log,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
ngx_null_command
};
ngx_http_module_t ngx_http_log_module_ctx = {
ngx_http_log_set_formats, /* preconfiguration */
ngx_http_log_init, /* postconfiguration */
ngx_http_log_create_main_conf, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_log_create_loc_conf, /* create location configration */
ngx_http_log_merge_loc_conf /* merge location configration */
};
ngx_module_t ngx_http_log_module = {
NGX_MODULE_V1,
&ngx_http_log_module_ctx, /* module context */
ngx_http_log_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_str_t http_access_log = ngx_string(NGX_HTTP_LOG_PATH);
static ngx_str_t ngx_http_combined_fmt =
ngx_string("$remote_addr - $remote_user [$time_local] "
"\"$request\" $status $body_bytes_sent "
"\"$http_referer\" \"$http_user_agent\"");
static ngx_http_log_var_t ngx_http_log_vars[] = {
{ ngx_string("connection"), NGX_ATOMIC_T_LEN, ngx_http_log_connection },
{ ngx_string("pipe"), 1, ngx_http_log_pipe },
{ ngx_string("time_local"), sizeof("28/Sep/1970:12:00:00 +0600") - 1,
ngx_http_log_time },
{ ngx_string("msec"), NGX_TIME_T_LEN + 4, ngx_http_log_msec },
{ ngx_string("request_time"), NGX_TIME_T_LEN, ngx_http_log_request_time },
{ ngx_string("status"), 3, ngx_http_log_status },
{ ngx_string("bytes_sent"), NGX_OFF_T_LEN, ngx_http_log_bytes_sent },
{ ngx_string("body_bytes_sent"), NGX_OFF_T_LEN,
ngx_http_log_body_bytes_sent },
{ ngx_string("apache_bytes_sent"), NGX_OFF_T_LEN,
ngx_http_log_body_bytes_sent },
{ ngx_string("request_length"), NGX_SIZE_T_LEN,
ngx_http_log_request_length },
{ ngx_null_string, 0, NULL }
};
ngx_http_log_op_name_t ngx_http_log_fmt_ops[] = {
{ ngx_string("addr"), INET_ADDRSTRLEN - 1, NULL, NULL, ngx_http_log_addr },
{ ngx_string("conn"), NGX_ATOMIC_T_LEN, NULL, NULL,
ngx_http_log_connection },
{ ngx_string("pipe"), 1, NULL, NULL, ngx_http_log_pipe },
{ ngx_string("time"), sizeof("28/Sep/1970:12:00:00 +0600") - 1,
NULL, NULL, ngx_http_log_time },
{ ngx_string("msec"), NGX_TIME_T_LEN + 4, NULL, NULL, ngx_http_log_msec },
{ ngx_string("request_time"), NGX_TIME_T_LEN, NULL, NULL,
ngx_http_log_request_time },
{ ngx_string("status"), 3, NULL, NULL, ngx_http_log_status },
{ ngx_string("length"), NGX_OFF_T_LEN,
NULL, NULL, ngx_http_log_bytes_sent },
{ ngx_string("apache_length"), NGX_OFF_T_LEN,
NULL, NULL, ngx_http_log_body_bytes_sent },
{ ngx_string("request_length"), NGX_SIZE_T_LEN,
NULL, NULL, ngx_http_log_request_length },
{ ngx_string("request"), 0, NULL,
ngx_http_log_request_getlen,
ngx_http_log_request },
{ ngx_string("i"), 0, ngx_http_log_header_in_compile, NULL,
ngx_http_log_header_in },
{ ngx_string("o"), 0, ngx_http_log_header_out_compile, NULL,
ngx_http_log_header_out },
{ ngx_string("v"), 0, ngx_http_log_variable_compile, NULL,
ngx_http_log_variable },
{ ngx_null_string, 0, NULL, NULL, NULL }
};
ngx_int_t
ngx_http_log_handler(ngx_http_request_t *r)
{
ngx_uint_t i, l;
u_char *line, *p;
size_t len;
ngx_http_log_t *log;
ngx_open_file_t *file;
ngx_http_log_op_t *op;
ngx_http_log_loc_conf_t *lcf;
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http log handler");
lcf = ngx_http_get_module_loc_conf(r, ngx_http_log_module);
if (lcf->off) {
return NGX_OK;
}
log = lcf->logs->elts;
for (l = 0; l < lcf->logs->nelts; l++) {
if (ngx_time() == log[l].disk_full_time) {
/*
* On FreeBSD writing to a full filesystem with enabled softupdates
* may block process for much longer time than writing to non-full
* filesystem, so we skip writing the log for one second.
*/
continue;
}
len = 0;
op = log[l].ops->elts;
for (i = 0; i < log[l].ops->nelts; i++) {
if (op[i].len == 0) {
len += op[i].getlen(r, op[i].data);
} else {
len += op[i].len;
}
}
len += NGX_LINEFEED_SIZE;
file = log[l].file;
if (file->buffer) {
if (len > (size_t) (file->last - file->pos)) {
if (ngx_write_fd(file->fd, file->buffer,
file->pos - file->buffer)
== -1
&& ngx_errno == NGX_ENOSPC)
{
log[l].disk_full_time = ngx_time();
}
file->pos = file->buffer;
}
if (len <= (size_t) (file->last - file->pos)) {
p = file->pos;
for (i = 0; i < log[l].ops->nelts; i++) {
p = op[i].run(r, p, &op[i]);
}
ngx_linefeed(p);
file->pos = p;
continue;
}
}
line = ngx_palloc(r->pool, len);
if (line == NULL) {
return NGX_ERROR;
}
p = line;
for (i = 0; i < log[l].ops->nelts; i++) {
p = op[i].run(r, p, &op[i]);
}
ngx_linefeed(p);
if (ngx_write_fd(file->fd, line, p - line) == -1
&& ngx_errno == NGX_ENOSPC)
{
log[l].disk_full_time = ngx_time();
}
}
return NGX_OK;
}
static u_char *
ngx_http_log_copy_short(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
size_t len;
uintptr_t data;
len = op->len;
data = op->data;
while (len--) {
*buf++ = (u_char) (data & 0xff);
data >>= 8;
}
return buf;
}
static u_char *
ngx_http_log_copy_long(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
return ngx_cpymem(buf, (u_char *) op->data, op->len);
}
static u_char *
ngx_http_log_addr(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
return ngx_cpymem(buf, r->connection->addr_text.data,
r->connection->addr_text.len);
}
static u_char *
ngx_http_log_connection(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
return ngx_sprintf(buf, "%ui", r->connection->number);
}
static u_char *
ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
if (r->pipeline) {
*buf = 'p';
} else {
*buf = '.';
}
return buf + 1;
}
static u_char *
ngx_http_log_time(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
return ngx_cpymem(buf, ngx_cached_http_log_time.data,
ngx_cached_http_log_time.len);
}
static u_char *
ngx_http_log_msec(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
ngx_time_t *tp;
tp = ngx_timeofday();
return ngx_sprintf(buf, "%T.%03M", tp->sec, tp->msec);
}
static u_char *
ngx_http_log_request_time(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
time_t elapsed;
elapsed = ngx_time() - r->start_time;
return ngx_sprintf(buf, "%T", elapsed);
}
static size_t
ngx_http_log_request_getlen(ngx_http_request_t *r, uintptr_t data)
{
return r->request_line.len;
}
static u_char *
ngx_http_log_request(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
return ngx_cpymem(buf, r->request_line.data, r->request_line.len);
}
static u_char *
ngx_http_log_status(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
return ngx_sprintf(buf, "%ui",
r->err_status ? r->err_status : r->headers_out.status);
}
static u_char *
ngx_http_log_bytes_sent(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
return ngx_sprintf(buf, "%O", r->connection->sent);
}
static u_char *
ngx_http_log_body_bytes_sent(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
off_t length;
length = r->connection->sent - r->header_size;
if (length > 0) {
return ngx_sprintf(buf, "%O", length);
}
*buf = '0';
return buf + 1;
}
static u_char *
ngx_http_log_request_length(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
return ngx_sprintf(buf, "%z", r->request_length);
}
static ngx_int_t
ngx_http_log_header_in_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
ngx_str_t *value)
{
ngx_uint_t i;
op->len = 0;
for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) {
if (ngx_http_headers_in[i].name.len != value->len) {
continue;
}
/* STUB: "Cookie" speacial handling */
if (ngx_http_headers_in[i].offset == 0) {
continue;
}
if (ngx_strncasecmp(ngx_http_headers_in[i].name.data, value->data,
value->len) == 0)
{
op->getlen = ngx_http_log_header_in_getlen;
op->run = ngx_http_log_header_in;
op->data = ngx_http_headers_in[i].offset;
return NGX_OK;
}
}
op->getlen = ngx_http_log_unknown_header_in_getlen;
op->run = ngx_http_log_unknown_header_in;
op->data = (uintptr_t) value;
return NGX_OK;
}
static size_t
ngx_http_log_header_in_getlen(ngx_http_request_t *r, uintptr_t data)
{
ngx_table_elt_t *h;
h = *(ngx_table_elt_t **) ((char *) &r->headers_in + data);
if (h) {
return h->value.len;
}
return 1;
}
static u_char *
ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
ngx_table_elt_t *h;
h = *(ngx_table_elt_t **) ((char *) &r->headers_in + op->data);
if (h) {
return ngx_cpymem(buf, h->value.data, h->value.len);
}
*buf = '-';
return buf + 1;
}
static size_t
ngx_http_log_unknown_header_in_getlen(ngx_http_request_t *r, uintptr_t data)
{
ngx_table_elt_t *h;
h = ngx_http_log_unknown_header(&r->headers_in.headers, (ngx_str_t *) data);
if (h) {
return h->value.len;
}
return 1;
}
static u_char *
ngx_http_log_unknown_header_in(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
ngx_table_elt_t *h;
h = ngx_http_log_unknown_header(&r->headers_in.headers,
(ngx_str_t *) op->data);
if (h) {
return ngx_cpymem(buf, h->value.data, h->value.len);
}
*buf = '-';
return buf + 1;
}
static ngx_int_t
ngx_http_log_header_out_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
ngx_str_t *value)
{
ngx_uint_t i;
op->len = 0;
for (i = 0; ngx_http_headers_out[i].name.len != 0; i++) {
if (ngx_http_headers_out[i].name.len != value->len) {
continue;
}
if (ngx_strncasecmp(ngx_http_headers_out[i].name.data, value->data,
value->len) == 0)
{
op->getlen = ngx_http_log_header_out_getlen;
op->run = ngx_http_log_header_out;
op->data = ngx_http_headers_out[i].offset;
return NGX_OK;
}
}
if (value->len == sizeof("Connection") - 1
&& ngx_strncasecmp(value->data, "Connection", value->len) == 0)
{
op->len = sizeof("keep-alive") - 1;
op->getlen = NULL;
op->run = ngx_http_log_connection_header_out;
op->data = 0;
return NGX_OK;
}
if (value->len == sizeof("Transfer-Encoding") - 1
&& ngx_strncasecmp(value->data, "Transfer-Encoding", value->len) == 0)
{
op->len = sizeof("chunked") - 1;
op->getlen = NULL;
op->run = ngx_http_log_transfer_encoding_header_out;
op->data = 0;
return NGX_OK;
}
op->getlen = ngx_http_log_unknown_header_out_getlen;
op->run = ngx_http_log_unknown_header_out;
op->data = (uintptr_t) value;
return NGX_OK;
}
static size_t
ngx_http_log_header_out_getlen(ngx_http_request_t *r, uintptr_t data)
{
ngx_table_elt_t *h;
h = *(ngx_table_elt_t **) ((char *) &r->headers_out + data);
if (h) {
return h->value.len;
}
/*
* No header pointer was found.
* However, some headers: "Date", "Server", "Content-Length",
* and "Last-Modified" have a special handling in the header filter,
* but we do not set up their pointers in the filter,
* because they are too seldom needed to be logged.
*/
if (data == offsetof(ngx_http_headers_out_t, date)) {
return ngx_cached_http_time.len;
}
if (data == offsetof(ngx_http_headers_out_t, server)) {
return (sizeof(NGINX_VER) - 1);
}
if (data == offsetof(ngx_http_headers_out_t, content_length)) {
if (r->headers_out.content_length_n == -1) {
return 1;
}
return NGX_OFF_T_LEN;
}
if (data == offsetof(ngx_http_headers_out_t, last_modified)) {
if (r->headers_out.last_modified_time == -1) {
return 1;
}
return sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1;
}
return 1;
}
static u_char *
ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
ngx_table_elt_t *h;
h = *(ngx_table_elt_t **) ((char *) &r->headers_out + op->data);
if (h) {
return ngx_cpymem(buf, h->value.data, h->value.len);
}
/*
* No header pointer was found.
* However, some headers: "Date", "Server", "Content-Length",
* and "Last-Modified" have a special handling in the header filter,
* but we do not set up their pointers in the filter,
* because they are too seldom needed to be logged.
*/
if (op->data == offsetof(ngx_http_headers_out_t, date)) {
return ngx_cpymem(buf, ngx_cached_http_time.data,
ngx_cached_http_time.len);
}
if (op->data == offsetof(ngx_http_headers_out_t, server)) {
return ngx_cpymem(buf, NGINX_VER, sizeof(NGINX_VER) - 1);
}
if (op->data == offsetof(ngx_http_headers_out_t, content_length)) {
if (r->headers_out.content_length_n == -1) {
*buf = '-';
return buf + 1;
}
return ngx_sprintf(buf, "%O", r->headers_out.content_length_n);
}
if (op->data == offsetof(ngx_http_headers_out_t, last_modified)) {
if (r->headers_out.last_modified_time == -1) {
*buf = '-';
return buf + 1;
}
return ngx_http_time(buf, r->headers_out.last_modified_time);
}
*buf = '-';
return buf + 1;
}
static size_t
ngx_http_log_unknown_header_out_getlen(ngx_http_request_t *r, uintptr_t data)
{
ngx_table_elt_t *h;
h = ngx_http_log_unknown_header(&r->headers_out.headers,
(ngx_str_t *) data);
if (h) {
return h->value.len;
}
return 1;
}
static u_char *
ngx_http_log_unknown_header_out(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
ngx_table_elt_t *h;
h = ngx_http_log_unknown_header(&r->headers_out.headers,
(ngx_str_t *) op->data);
if (h) {
return ngx_cpymem(buf, h->value.data, h->value.len);
}
*buf = '-';
return buf + 1;
}
static ngx_table_elt_t *
ngx_http_log_unknown_header(ngx_list_t *headers, ngx_str_t *value)
{
ngx_uint_t i;
ngx_list_part_t *part;
ngx_table_elt_t *h;
part = &headers->part;
h = part->elts;
for (i = 0; /* void */; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
h = part->elts;
i = 0;
}
if (h[i].key.len != value->len) {
continue;
}
if (ngx_strncasecmp(h[i].key.data, value->data, value->len) == 0) {
return &h[i];
}
}
return NULL;
}
static u_char *
ngx_http_log_connection_header_out(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
if (r->keepalive) {
return ngx_cpymem(buf, "keep-alive", sizeof("keep-alive") - 1);
} else {
return ngx_cpymem(buf, "close", sizeof("close") - 1);
}
}
static u_char *
ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r, u_char *buf,
ngx_http_log_op_t *op)
{
if (r->chunked) {
return ngx_cpymem(buf, "chunked", sizeof("chunked") - 1);
}
*buf = '-';
return buf + 1;
}
static ngx_int_t
ngx_http_log_variable_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
ngx_str_t *value)
{
ngx_int_t index;
index = ngx_http_get_variable_index(cf, value);
if (index == NGX_ERROR) {
return NGX_ERROR;
}
op->len = 0;
op->getlen = ngx_http_log_variable_getlen;
op->run = ngx_http_log_variable;
op->data = index;
return NGX_OK;
}
static size_t
ngx_http_log_variable_getlen(ngx_http_request_t *r, uintptr_t data)
{
ngx_http_variable_value_t *value;
value = ngx_http_get_indexed_variable(r, data);
if (value == NULL || value->not_found) {
return 1;
}
return value->len;
}
static u_char *
ngx_http_log_variable(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
{
ngx_http_variable_value_t *value;
value = ngx_http_get_indexed_variable(r, op->data);
if (value == NULL || value->not_found) {
*buf = '-';
return buf + 1;
}
return ngx_cpymem(buf, value->data, value->len);
}
static ngx_int_t
ngx_http_log_set_formats(ngx_conf_t *cf)
{
ngx_http_log_op_name_t *op;
for (op = ngx_http_log_fmt_ops; op->name.len; op++) { /* void */ }
op->run = NULL;
return NGX_OK;
}
static void *
ngx_http_log_create_main_conf(ngx_conf_t *cf)
{
ngx_http_log_main_conf_t *conf;
ngx_http_log_fmt_t *fmt;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_main_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
if (ngx_array_init(&conf->formats, cf->pool, 4, sizeof(ngx_http_log_fmt_t))
!= NGX_OK)
{
return NGX_CONF_ERROR;
}
fmt = ngx_array_push(&conf->formats);
if (fmt == NULL) {
return NGX_CONF_ERROR;
}
fmt->name.len = sizeof("combined") - 1;
fmt->name.data = (u_char *) "combined";
fmt->ops = ngx_array_create(cf->pool, 16, sizeof(ngx_http_log_op_t));
if (fmt->ops == NULL) {
return NGX_CONF_ERROR;
}
return conf;
}
static void *
ngx_http_log_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_log_loc_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_loc_conf_t));
if (conf == NULL) {
return NGX_CONF_ERROR;
}
return conf;
}
static char *
ngx_http_log_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_log_loc_conf_t *prev = parent;
ngx_http_log_loc_conf_t *conf = child;
ngx_http_log_t *log;
ngx_http_log_fmt_t *fmt;
ngx_http_log_main_conf_t *lmcf;
if (conf->logs == NULL) {
if (conf->off) {
return NGX_CONF_OK;
}
if (prev->logs) {
conf->logs = prev->logs;
} else {
if (prev->off) {
conf->off = prev->off;
return NGX_CONF_OK;
}
conf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
if (conf->logs == NULL) {
return NGX_CONF_ERROR;
}
log = ngx_array_push(conf->logs);
if (log == NULL) {
return NGX_CONF_ERROR;
}
log->file = ngx_conf_open_file(cf->cycle, &http_access_log);
if (log->file == NULL) {
return NGX_CONF_ERROR;
}
lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
fmt = lmcf->formats.elts;
/* the default "combined" format */
log->ops = fmt[0].ops;
lmcf->combined_used = 1;
}
}
return NGX_CONF_OK;
}
static char *
ngx_http_log_set_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_log_loc_conf_t *llcf = conf;
ssize_t buf;
ngx_uint_t i;
ngx_str_t *value, name;
ngx_http_log_t *log;
ngx_http_log_fmt_t *fmt;
ngx_http_log_main_conf_t *lmcf;
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "off") == 0) {
llcf->off = 1;
return NGX_CONF_OK;
}
if (llcf->logs == NULL) {
llcf->logs = ngx_array_create(cf->pool, 2, sizeof(ngx_http_log_t));
if (llcf->logs == NULL) {
return NGX_CONF_ERROR;
}
}
lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
log = ngx_array_push(llcf->logs);
if (log == NULL) {
return NGX_CONF_ERROR;
}
log->file = ngx_conf_open_file(cf->cycle, &value[1]);
if (log->file == NULL) {
return NGX_CONF_ERROR;
}
log->disk_full_time = 0;
if (cf->args->nelts >= 3) {
name = value[2];
if (ngx_strcmp(name.data, "combined") == 0) {
lmcf->combined_used = 1;
}
} else {
name.len = sizeof("combined") - 1;
name.data = (u_char *) "combined";
lmcf->combined_used = 1;
}
fmt = lmcf->formats.elts;
for (i = 0; i < lmcf->formats.nelts; i++) {
if (fmt[i].name.len == name.len
&& ngx_strcasecmp(fmt[i].name.data, name.data) == 0)
{
log->ops = fmt[i].ops;
goto buffer;
}
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"unknown log format \"%V\"", &name);
return NGX_CONF_ERROR;
buffer:
if (cf->args->nelts == 4) {
if (ngx_strncmp(value[3].data, "buffer=", 7) != 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[3]);
return NGX_CONF_ERROR;
}
name.len = value[3].len - 7;
name.data = value[3].data + 7;
buf = ngx_parse_size(&name);
if (buf == NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[3]);
return NGX_CONF_ERROR;
}
if (log->file->buffer && log->file->last - log->file->pos != buf) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"access_log \"%V\" already defined "
"with different buffer size", &value[1]);
return NGX_CONF_ERROR;
}
log->file->buffer = ngx_palloc(cf->pool, buf);
if (log->file->buffer == NULL) {
return NGX_CONF_ERROR;
}
log->file->pos = log->file->buffer;
log->file->last = log->file->buffer + buf;
}
return NGX_CONF_OK;
}
static char *
ngx_http_log_set_format(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_log_main_conf_t *lmcf = conf;
ngx_str_t *value;
ngx_uint_t i;
ngx_http_log_fmt_t *fmt;
value = cf->args->elts;
fmt = lmcf->formats.elts;
for (i = 0; i < lmcf->formats.nelts; i++) {
if (fmt[i].name.len == value[1].len
&& ngx_strcmp(fmt[i].name.data, value[1].data) == 0)
{
return "duplicate \"log_format\" name";
}
}
fmt = ngx_array_push(&lmcf->formats);
if (fmt == NULL) {
return NGX_CONF_ERROR;
}
fmt->name = value[1];
fmt->ops = ngx_array_create(cf->pool, 16, sizeof(ngx_http_log_op_t));
if (fmt->ops == NULL) {
return NGX_CONF_ERROR;
}
return ngx_http_log_compile_format(cf, fmt->ops, cf->args, 2);
}
static char *
ngx_http_log_compile_format(ngx_conf_t *cf, ngx_array_t *ops,
ngx_array_t *args, ngx_uint_t s)
{
u_char *data, *p, *fname, *arg_data, ch;
size_t i, len, fname_len, arg_len;
ngx_str_t *value, var, *a;
ngx_uint_t bracket;
ngx_http_log_op_t *op;
ngx_http_log_var_t *v;
ngx_http_log_op_name_t *name;
static ngx_uint_t warn;
value = args->elts;
arg_data = NULL;
for ( /* void */ ; s < args->nelts; s++) {
i = 0;
while (i < value[s].len) {
op = ngx_array_push(ops);
if (op == NULL) {
return NGX_CONF_ERROR;
}
data = &value[s].data[i];
if (value[s].data[i] == '%') {
i++;
if (i == value[s].len) {
goto invalid;
}
if (value[s].data[i] == '{') {
i++;
arg_data = &value[s].data[i];
while (i < value[s].len && value[s].data[i] != '}') {
i++;
}
arg_len = &value[s].data[i] - arg_data;
if (i == value[s].len || arg_len == 0) {
goto invalid;
}
i++;
} else {
arg_len = 0;
}
if (warn == 0) {
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"the parameters in the \"%%name\" form are deprecated, "
"use the \"$variable\" instead");
warn = 1;
}
fname = &value[s].data[i];
while (i < value[s].len
&& ((value[s].data[i] >= 'a' && value[s].data[i] <= 'z')
|| value[s].data[i] == '_'))
{
i++;
}
fname_len = &value[s].data[i] - fname;
if (fname_len == 0) {
goto invalid;
}
for (name = ngx_http_log_fmt_ops; name->run; name++) {
if (name->name.len == 0) {
name = (ngx_http_log_op_name_t *) name->run;
}
if (name->name.len == fname_len
&& ngx_strncmp(name->name.data, fname, fname_len) == 0)
{
if (name->compile == NULL) {
if (arg_len) {
fname[fname_len] = '\0';
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%s\" must not have argument",
data);
return NGX_CONF_ERROR;
}
op->len = name->len;
op->getlen = name->getlen;
op->run = name->run;
op->data = 0;
break;
}
if (arg_len == 0) {
fname[fname_len] = '\0';
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"\"%s\" requires argument",
data);
return NGX_CONF_ERROR;
}
a = ngx_palloc(cf->pool, sizeof(ngx_str_t));
if (a == NULL) {
return NGX_CONF_ERROR;
}
a->len = arg_len;
a->data = arg_data;
if (name->compile(cf, op, a) == NGX_ERROR) {
return NGX_CONF_ERROR;
}
break;
}
}
if (name->name.len == 0) {
goto invalid;
}
continue;
} else if (value[s].data[i] == '$') {
if (++i == value[s].len) {
goto invalid;
}
if (value[s].data[i] == '{') {
bracket = 1;
if (++i == value[s].len) {
goto invalid;
}
var.data = &value[s].data[i];
} else {
bracket = 0;
var.data = &value[s].data[i];
}
for (var.len = 0; i < value[s].len; i++, var.len++) {
ch = value[s].data[i];
if (ch == '}' && bracket) {
i++;
bracket = 0;
break;
}
if ((ch >= 'A' && ch <= 'Z')
|| (ch >= 'a' && ch <= 'z')
|| (ch >= '0' && ch <= '9')
|| ch == '_')
{
continue;
}
break;
}
if (bracket) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"the closing bracket in \"%V\" "
"variable is missing", &var);
return NGX_CONF_ERROR;
}
if (var.len == 0) {
goto invalid;
}
if (ngx_strncmp(var.data, "apache_bytes_sent", 17) == 0) {
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"use \"$body_bytes_sent\" instead of "
"\"$apache_bytes_sent\"");
}
for (v = ngx_http_log_vars; v->name.len; v++) {
if (v->name.len == var.len
&& ngx_strncmp(v->name.data, var.data, var.len) == 0)
{
op->len = v->len;
op->getlen = NULL;
op->run = v->run;
op->data = 0;
goto found;
}
}
if (ngx_http_log_variable_compile(cf, op, &var) != NGX_OK) {
return NGX_CONF_ERROR;
}
found:
continue;
}
i++;
while (i < value[s].len
&& value[s].data[i] != '$'
&& value[s].data[i] != '%')
{
i++;
}
len = &value[s].data[i] - data;
if (len) {
op->len = len;
op->getlen = NULL;
if (len <= sizeof(uintptr_t)) {
op->run = ngx_http_log_copy_short;
op->data = 0;
while (len--) {
op->data <<= 8;
op->data |= data[len];
}
} else {
op->run = ngx_http_log_copy_long;
p = ngx_palloc(cf->pool, len);
if (p == NULL) {
return NGX_CONF_ERROR;
}
ngx_memcpy(p, data, len);
op->data = (uintptr_t) p;
}
}
}
}
return NGX_CONF_OK;
invalid:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%s\"", data);
return NGX_CONF_ERROR;
}
static ngx_int_t
ngx_http_log_init(ngx_conf_t *cf)
{
ngx_str_t *value;
ngx_array_t a;
ngx_http_handler_pt *h;
ngx_http_log_fmt_t *fmt;
ngx_http_log_main_conf_t *lmcf;
ngx_http_core_main_conf_t *cmcf;
lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_log_module);
if (lmcf->combined_used) {
if (ngx_array_init(&a, cf->pool, 1, sizeof(ngx_str_t)) != NGX_OK) {
return NGX_ERROR;
}
value = ngx_array_push(&a);
if (value == NULL) {
return NGX_ERROR;
}
*value = ngx_http_combined_fmt;
fmt = lmcf->formats.elts;
if (ngx_http_log_compile_format(cf, fmt->ops, &a, 0)
!= NGX_CONF_OK)
{
return NGX_ERROR;
}
}
cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
h = ngx_array_push(&cmcf->phases[NGX_HTTP_LOG_PHASE].handlers);
if (h == NULL) {
return NGX_ERROR;
}
*h = ngx_http_log_handler;
return NGX_OK;
}