aboutsummaryrefslogtreecommitdiffstats
path: root/app/nginx/src/http/modules/ngx_http_log_module.c
diff options
context:
space:
mode:
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_log_module.c')
-rw-r--r--app/nginx/src/http/modules/ngx_http_log_module.c1857
1 files changed, 1857 insertions, 0 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_log_module.c b/app/nginx/src/http/modules/ngx_http_log_module.c
new file mode 100644
index 0000000..917ed55
--- /dev/null
+++ b/app/nginx/src/http/modules/ngx_http_log_module.c
@@ -0,0 +1,1857 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+#if (NGX_ZLIB)
+#include <zlib.h>
+#endif
+
+
+typedef struct ngx_http_log_op_s ngx_http_log_op_t;
+
+typedef u_char *(*ngx_http_log_op_run_pt) (ngx_http_request_t *r, u_char *buf,
+ ngx_http_log_op_t *op);
+
+typedef size_t (*ngx_http_log_op_getlen_pt) (ngx_http_request_t *r,
+ uintptr_t data);
+
+
+struct ngx_http_log_op_s {
+ size_t len;
+ ngx_http_log_op_getlen_pt getlen;
+ ngx_http_log_op_run_pt run;
+ uintptr_t data;
+};
+
+
+typedef struct {
+ ngx_str_t name;
+ ngx_array_t *flushes;
+ 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 {
+ u_char *start;
+ u_char *pos;
+ u_char *last;
+
+ ngx_event_t *event;
+ ngx_msec_t flush;
+ ngx_int_t gzip;
+} ngx_http_log_buf_t;
+
+
+typedef struct {
+ ngx_array_t *lengths;
+ ngx_array_t *values;
+} ngx_http_log_script_t;
+
+
+typedef struct {
+ ngx_open_file_t *file;
+ ngx_http_log_script_t *script;
+ time_t disk_full_time;
+ time_t error_log_time;
+ ngx_syslog_peer_t *syslog_peer;
+ ngx_http_log_fmt_t *format;
+ ngx_http_complex_value_t *filter;
+} ngx_http_log_t;
+
+
+typedef struct {
+ ngx_array_t *logs; /* array of ngx_http_log_t */
+
+ ngx_open_file_cache_t *open_file_cache;
+ time_t open_file_cache_valid;
+ ngx_uint_t open_file_cache_min_uses;
+
+ 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 void ngx_http_log_write(ngx_http_request_t *r, ngx_http_log_t *log,
+ u_char *buf, size_t len);
+static ssize_t ngx_http_log_script_write(ngx_http_request_t *r,
+ ngx_http_log_script_t *script, u_char **name, u_char *buf, size_t len);
+
+#if (NGX_ZLIB)
+static ssize_t ngx_http_log_gzip(ngx_fd_t fd, u_char *buf, size_t len,
+ ngx_int_t level, ngx_log_t *log);
+
+static void *ngx_http_log_gzip_alloc(void *opaque, u_int items, u_int size);
+static void ngx_http_log_gzip_free(void *opaque, void *address);
+#endif
+
+static void ngx_http_log_flush(ngx_open_file_t *file, ngx_log_t *log);
+static void ngx_http_log_flush_handler(ngx_event_t *ev);
+
+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_iso8601(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 ngx_int_t ngx_http_log_variable_compile(ngx_conf_t *cf,
+ ngx_http_log_op_t *op, ngx_str_t *value, ngx_uint_t json);
+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 uintptr_t ngx_http_log_escape(u_char *dst, u_char *src, size_t size);
+static size_t ngx_http_log_json_variable_getlen(ngx_http_request_t *r,
+ uintptr_t data);
+static u_char *ngx_http_log_json_variable(ngx_http_request_t *r, u_char *buf,
+ ngx_http_log_op_t *op);
+
+
+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 *flushes, ngx_array_t *ops, ngx_array_t *args, ngx_uint_t s);
+static char *ngx_http_log_open_file_cache(ngx_conf_t *cf, ngx_command_t *cmd,
+ void *conf);
+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_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_HTTP_LMT_CONF|NGX_CONF_1MORE,
+ ngx_http_log_set_log,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ 0,
+ NULL },
+
+ { ngx_string("open_log_file_cache"),
+ NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
+ ngx_http_log_open_file_cache,
+ NGX_HTTP_LOC_CONF_OFFSET,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_http_module_t ngx_http_log_module_ctx = {
+ NULL, /* 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 configuration */
+ ngx_http_log_merge_loc_conf /* merge location configuration */
+};
+
+
+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 ngx_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("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("time_iso8601"), sizeof("1970-09-28T12:00:00+06:00") - 1,
+ ngx_http_log_iso8601 },
+ { ngx_string("msec"), NGX_TIME_T_LEN + 4, ngx_http_log_msec },
+ { ngx_string("request_time"), NGX_TIME_T_LEN + 4,
+ ngx_http_log_request_time },
+ { ngx_string("status"), NGX_INT_T_LEN, 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("request_length"), NGX_SIZE_T_LEN,
+ ngx_http_log_request_length },
+
+ { ngx_null_string, 0, NULL }
+};
+
+
+static ngx_int_t
+ngx_http_log_handler(ngx_http_request_t *r)
+{
+ u_char *line, *p;
+ size_t len, size;
+ ssize_t n;
+ ngx_str_t val;
+ ngx_uint_t i, l;
+ ngx_http_log_t *log;
+ ngx_http_log_op_t *op;
+ ngx_http_log_buf_t *buffer;
+ 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 (log[l].filter) {
+ if (ngx_http_complex_value(r, log[l].filter, &val) != NGX_OK) {
+ return NGX_ERROR;
+ }
+
+ if (val.len == 0 || (val.len == 1 && val.data[0] == '0')) {
+ continue;
+ }
+ }
+
+ 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 to a log for one second
+ */
+
+ continue;
+ }
+
+ ngx_http_script_flush_no_cacheable_variables(r, log[l].format->flushes);
+
+ len = 0;
+ op = log[l].format->ops->elts;
+ for (i = 0; i < log[l].format->ops->nelts; i++) {
+ if (op[i].len == 0) {
+ len += op[i].getlen(r, op[i].data);
+
+ } else {
+ len += op[i].len;
+ }
+ }
+
+ if (log[l].syslog_peer) {
+
+ /* length of syslog's PRI and HEADER message parts */
+ len += sizeof("<255>Jan 01 00:00:00 ") - 1
+ + ngx_cycle->hostname.len + 1
+ + log[l].syslog_peer->tag.len + 2;
+
+ goto alloc_line;
+ }
+
+ len += NGX_LINEFEED_SIZE;
+
+ buffer = log[l].file ? log[l].file->data : NULL;
+
+ if (buffer) {
+
+ if (len > (size_t) (buffer->last - buffer->pos)) {
+
+ ngx_http_log_write(r, &log[l], buffer->start,
+ buffer->pos - buffer->start);
+
+ buffer->pos = buffer->start;
+ }
+
+ if (len <= (size_t) (buffer->last - buffer->pos)) {
+
+ p = buffer->pos;
+
+ if (buffer->event && p == buffer->start) {
+ ngx_add_timer(buffer->event, buffer->flush);
+ }
+
+ for (i = 0; i < log[l].format->ops->nelts; i++) {
+ p = op[i].run(r, p, &op[i]);
+ }
+
+ ngx_linefeed(p);
+
+ buffer->pos = p;
+
+ continue;
+ }
+
+ if (buffer->event && buffer->event->timer_set) {
+ ngx_del_timer(buffer->event);
+ }
+ }
+
+ alloc_line:
+
+ line = ngx_pnalloc(r->pool, len);
+ if (line == NULL) {
+ return NGX_ERROR;
+ }
+
+ p = line;
+
+ if (log[l].syslog_peer) {
+ p = ngx_syslog_add_header(log[l].syslog_peer, line);
+ }
+
+ for (i = 0; i < log[l].format->ops->nelts; i++) {
+ p = op[i].run(r, p, &op[i]);
+ }
+
+ if (log[l].syslog_peer) {
+
+ size = p - line;
+
+ n = ngx_syslog_send(log[l].syslog_peer, line, size);
+
+ if (n < 0) {
+ ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
+ "send() to syslog failed");
+
+ } else if ((size_t) n != size) {
+ ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
+ "send() to syslog has written only %z of %uz",
+ n, size);
+ }
+
+ continue;
+ }
+
+ ngx_linefeed(p);
+
+ ngx_http_log_write(r, &log[l], line, p - line);
+ }
+
+ return NGX_OK;
+}
+
+
+static void
+ngx_http_log_write(ngx_http_request_t *r, ngx_http_log_t *log, u_char *buf,
+ size_t len)
+{
+ u_char *name;
+ time_t now;
+ ssize_t n;
+ ngx_err_t err;
+#if (NGX_ZLIB)
+ ngx_http_log_buf_t *buffer;
+#endif
+
+ if (log->script == NULL) {
+ name = log->file->name.data;
+
+#if (NGX_ZLIB)
+ buffer = log->file->data;
+
+ if (buffer && buffer->gzip) {
+ n = ngx_http_log_gzip(log->file->fd, buf, len, buffer->gzip,
+ r->connection->log);
+ } else {
+ n = ngx_write_fd(log->file->fd, buf, len);
+ }
+#else
+ n = ngx_write_fd(log->file->fd, buf, len);
+#endif
+
+ } else {
+ name = NULL;
+ n = ngx_http_log_script_write(r, log->script, &name, buf, len);
+ }
+
+ if (n == (ssize_t) len) {
+ return;
+ }
+
+ now = ngx_time();
+
+ if (n == -1) {
+ err = ngx_errno;
+
+ if (err == NGX_ENOSPC) {
+ log->disk_full_time = now;
+ }
+
+ if (now - log->error_log_time > 59) {
+ ngx_log_error(NGX_LOG_ALERT, r->connection->log, err,
+ ngx_write_fd_n " to \"%s\" failed", name);
+
+ log->error_log_time = now;
+ }
+
+ return;
+ }
+
+ if (now - log->error_log_time > 59) {
+ ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+ ngx_write_fd_n " to \"%s\" was incomplete: %z of %uz",
+ name, n, len);
+
+ log->error_log_time = now;
+ }
+}
+
+
+static ssize_t
+ngx_http_log_script_write(ngx_http_request_t *r, ngx_http_log_script_t *script,
+ u_char **name, u_char *buf, size_t len)
+{
+ size_t root;
+ ssize_t n;
+ ngx_str_t log, path;
+ ngx_open_file_info_t of;
+ ngx_http_log_loc_conf_t *llcf;
+ ngx_http_core_loc_conf_t *clcf;
+
+ clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
+
+ if (!r->root_tested) {
+
+ /* test root directory existence */
+
+ if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ path.data[root] = '\0';
+
+ ngx_memzero(&of, sizeof(ngx_open_file_info_t));
+
+ of.valid = clcf->open_file_cache_valid;
+ of.min_uses = clcf->open_file_cache_min_uses;
+ of.test_dir = 1;
+ of.test_only = 1;
+ of.errors = clcf->open_file_cache_errors;
+ of.events = clcf->open_file_cache_events;
+
+ if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
+ != NGX_OK)
+ {
+ if (of.err == 0) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, of.err,
+ "testing \"%s\" existence failed", path.data);
+
+ /* simulate successful logging */
+ return len;
+ }
+
+ if (!of.is_dir) {
+ ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ENOTDIR,
+ "testing \"%s\" existence failed", path.data);
+
+ /* simulate successful logging */
+ return len;
+ }
+ }
+
+ if (ngx_http_script_run(r, &log, script->lengths->elts, 1,
+ script->values->elts)
+ == NULL)
+ {
+ /* simulate successful logging */
+ return len;
+ }
+
+ log.data[log.len - 1] = '\0';
+ *name = log.data;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "http log \"%s\"", log.data);
+
+ llcf = ngx_http_get_module_loc_conf(r, ngx_http_log_module);
+
+ ngx_memzero(&of, sizeof(ngx_open_file_info_t));
+
+ of.log = 1;
+ of.valid = llcf->open_file_cache_valid;
+ of.min_uses = llcf->open_file_cache_min_uses;
+ of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
+
+ if (ngx_http_set_disable_symlinks(r, clcf, &log, &of) != NGX_OK) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ if (ngx_open_cached_file(llcf->open_file_cache, &log, &of, r->pool)
+ != NGX_OK)
+ {
+ if (of.err == 0) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
+ "%s \"%s\" failed", of.failed, log.data);
+ /* simulate successful logging */
+ return len;
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+ "http log #%d", of.fd);
+
+ n = ngx_write_fd(of.fd, buf, len);
+
+ return n;
+}
+
+
+#if (NGX_ZLIB)
+
+static ssize_t
+ngx_http_log_gzip(ngx_fd_t fd, u_char *buf, size_t len, ngx_int_t level,
+ ngx_log_t *log)
+{
+ int rc, wbits, memlevel;
+ u_char *out;
+ size_t size;
+ ssize_t n;
+ z_stream zstream;
+ ngx_err_t err;
+ ngx_pool_t *pool;
+
+ wbits = MAX_WBITS;
+ memlevel = MAX_MEM_LEVEL - 1;
+
+ while ((ssize_t) len < ((1 << (wbits - 1)) - 262)) {
+ wbits--;
+ memlevel--;
+ }
+
+ /*
+ * This is a formula from deflateBound() for conservative upper bound of
+ * compressed data plus 18 bytes of gzip wrapper.
+ */
+
+ size = len + ((len + 7) >> 3) + ((len + 63) >> 6) + 5 + 18;
+
+ ngx_memzero(&zstream, sizeof(z_stream));
+
+ pool = ngx_create_pool(256, log);
+ if (pool == NULL) {
+ /* simulate successful logging */
+ return len;
+ }
+
+ pool->log = log;
+
+ zstream.zalloc = ngx_http_log_gzip_alloc;
+ zstream.zfree = ngx_http_log_gzip_free;
+ zstream.opaque = pool;
+
+ out = ngx_pnalloc(pool, size);
+ if (out == NULL) {
+ goto done;
+ }
+
+ zstream.next_in = buf;
+ zstream.avail_in = len;
+ zstream.next_out = out;
+ zstream.avail_out = size;
+
+ rc = deflateInit2(&zstream, (int) level, Z_DEFLATED, wbits + 16, memlevel,
+ Z_DEFAULT_STRATEGY);
+
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, log, 0, "deflateInit2() failed: %d", rc);
+ goto done;
+ }
+
+ ngx_log_debug4(NGX_LOG_DEBUG_HTTP, log, 0,
+ "deflate in: ni:%p no:%p ai:%ud ao:%ud",
+ zstream.next_in, zstream.next_out,
+ zstream.avail_in, zstream.avail_out);
+
+ rc = deflate(&zstream, Z_FINISH);
+
+ if (rc != Z_STREAM_END) {
+ ngx_log_error(NGX_LOG_ALERT, log, 0,
+ "deflate(Z_FINISH) failed: %d", rc);
+ goto done;
+ }
+
+ ngx_log_debug5(NGX_LOG_DEBUG_HTTP, log, 0,
+ "deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
+ zstream.next_in, zstream.next_out,
+ zstream.avail_in, zstream.avail_out,
+ rc);
+
+ size -= zstream.avail_out;
+
+ rc = deflateEnd(&zstream);
+
+ if (rc != Z_OK) {
+ ngx_log_error(NGX_LOG_ALERT, log, 0, "deflateEnd() failed: %d", rc);
+ goto done;
+ }
+
+ n = ngx_write_fd(fd, out, size);
+
+ if (n != (ssize_t) size) {
+ err = (n == -1) ? ngx_errno : 0;
+
+ ngx_destroy_pool(pool);
+
+ ngx_set_errno(err);
+ return -1;
+ }
+
+done:
+
+ ngx_destroy_pool(pool);
+
+ /* simulate successful logging */
+ return len;
+}
+
+
+static void *
+ngx_http_log_gzip_alloc(void *opaque, u_int items, u_int size)
+{
+ ngx_pool_t *pool = opaque;
+
+ ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pool->log, 0,
+ "gzip alloc: n:%ud s:%ud", items, size);
+
+ return ngx_palloc(pool, items * size);
+}
+
+
+static void
+ngx_http_log_gzip_free(void *opaque, void *address)
+{
+#if 0
+ ngx_pool_t *pool = opaque;
+
+ ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pool->log, 0, "gzip free: %p", address);
+#endif
+}
+
+#endif
+
+
+static void
+ngx_http_log_flush(ngx_open_file_t *file, ngx_log_t *log)
+{
+ size_t len;
+ ssize_t n;
+ ngx_http_log_buf_t *buffer;
+
+ buffer = file->data;
+
+ len = buffer->pos - buffer->start;
+
+ if (len == 0) {
+ return;
+ }
+
+#if (NGX_ZLIB)
+ if (buffer->gzip) {
+ n = ngx_http_log_gzip(file->fd, buffer->start, len, buffer->gzip, log);
+ } else {
+ n = ngx_write_fd(file->fd, buffer->start, len);
+ }
+#else
+ n = ngx_write_fd(file->fd, buffer->start, len);
+#endif
+
+ if (n == -1) {
+ ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
+ ngx_write_fd_n " to \"%s\" failed",
+ file->name.data);
+
+ } else if ((size_t) n != len) {
+ ngx_log_error(NGX_LOG_ALERT, log, 0,
+ ngx_write_fd_n " to \"%s\" was incomplete: %z of %uz",
+ file->name.data, n, len);
+ }
+
+ buffer->pos = buffer->start;
+
+ if (buffer->event && buffer->event->timer_set) {
+ ngx_del_timer(buffer->event);
+ }
+}
+
+
+static void
+ngx_http_log_flush_handler(ngx_event_t *ev)
+{
+ ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0,
+ "http log buffer flush handler");
+
+ ngx_http_log_flush(ev->data, ev->log);
+}
+
+
+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_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_iso8601(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
+{
+ return ngx_cpymem(buf, ngx_cached_http_log_iso8601.data,
+ ngx_cached_http_log_iso8601.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)
+{
+ ngx_time_t *tp;
+ ngx_msec_int_t ms;
+
+ tp = ngx_timeofday();
+
+ ms = (ngx_msec_int_t)
+ ((tp->sec - r->start_sec) * 1000 + (tp->msec - r->start_msec));
+ ms = ngx_max(ms, 0);
+
+ return ngx_sprintf(buf, "%T.%03M", (time_t) ms / 1000, ms % 1000);
+}
+
+
+static u_char *
+ngx_http_log_status(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op)
+{
+ ngx_uint_t status;
+
+ if (r->err_status) {
+ status = r->err_status;
+
+ } else if (r->headers_out.status) {
+ status = r->headers_out.status;
+
+ } else if (r->http_version == NGX_HTTP_VERSION_9) {
+ status = 9;
+
+ } else {
+ status = 0;
+ }
+
+ return ngx_sprintf(buf, "%03ui", 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);
+}
+
+
+/*
+ * although there is a real $body_bytes_sent variable,
+ * this log operation code function is more optimized for logging
+ */
+
+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, "%O", r->request_length);
+}
+
+
+static ngx_int_t
+ngx_http_log_variable_compile(ngx_conf_t *cf, ngx_http_log_op_t *op,
+ ngx_str_t *value, ngx_uint_t json)
+{
+ ngx_int_t index;
+
+ index = ngx_http_get_variable_index(cf, value);
+ if (index == NGX_ERROR) {
+ return NGX_ERROR;
+ }
+
+ op->len = 0;
+
+ if (json) {
+ op->getlen = ngx_http_log_json_variable_getlen;
+ op->run = ngx_http_log_json_variable;
+
+ } else {
+ 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)
+{
+ uintptr_t len;
+ ngx_http_variable_value_t *value;
+
+ value = ngx_http_get_indexed_variable(r, data);
+
+ if (value == NULL || value->not_found) {
+ return 1;
+ }
+
+ len = ngx_http_log_escape(NULL, value->data, value->len);
+
+ value->escape = len ? 1 : 0;
+
+ return value->len + len * 3;
+}
+
+
+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;
+ }
+
+ if (value->escape == 0) {
+ return ngx_cpymem(buf, value->data, value->len);
+
+ } else {
+ return (u_char *) ngx_http_log_escape(buf, value->data, value->len);
+ }
+}
+
+
+static uintptr_t
+ngx_http_log_escape(u_char *dst, u_char *src, size_t size)
+{
+ ngx_uint_t n;
+ static u_char hex[] = "0123456789ABCDEF";
+
+ static uint32_t escape[] = {
+ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
+
+ /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
+ 0x00000004, /* 0000 0000 0000 0000 0000 0000 0000 0100 */
+
+ /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
+ 0x10000000, /* 0001 0000 0000 0000 0000 0000 0000 0000 */
+
+ /* ~}| {zyx wvut srqp onml kjih gfed cba` */
+ 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
+
+ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
+ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
+ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
+ 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
+ };
+
+
+ if (dst == NULL) {
+
+ /* find the number of the characters to be escaped */
+
+ n = 0;
+
+ while (size) {
+ if (escape[*src >> 5] & (1U << (*src & 0x1f))) {
+ n++;
+ }
+ src++;
+ size--;
+ }
+
+ return (uintptr_t) n;
+ }
+
+ while (size) {
+ if (escape[*src >> 5] & (1U << (*src & 0x1f))) {
+ *dst++ = '\\';
+ *dst++ = 'x';
+ *dst++ = hex[*src >> 4];
+ *dst++ = hex[*src & 0xf];
+ src++;
+
+ } else {
+ *dst++ = *src++;
+ }
+ size--;
+ }
+
+ return (uintptr_t) dst;
+}
+
+
+static size_t
+ngx_http_log_json_variable_getlen(ngx_http_request_t *r, uintptr_t data)
+{
+ uintptr_t len;
+ ngx_http_variable_value_t *value;
+
+ value = ngx_http_get_indexed_variable(r, data);
+
+ if (value == NULL || value->not_found) {
+ return 0;
+ }
+
+ len = ngx_escape_json(NULL, value->data, value->len);
+
+ value->escape = len ? 1 : 0;
+
+ return value->len + len;
+}
+
+
+static u_char *
+ngx_http_log_json_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) {
+ return buf;
+ }
+
+ if (value->escape == 0) {
+ return ngx_cpymem(buf, value->data, value->len);
+
+ } else {
+ return (u_char *) ngx_escape_json(buf, value->data, value->len);
+ }
+}
+
+
+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 NULL;
+ }
+
+ if (ngx_array_init(&conf->formats, cf->pool, 4, sizeof(ngx_http_log_fmt_t))
+ != NGX_OK)
+ {
+ return NULL;
+ }
+
+ fmt = ngx_array_push(&conf->formats);
+ if (fmt == NULL) {
+ return NULL;
+ }
+
+ ngx_str_set(&fmt->name, "combined");
+
+ fmt->flushes = NULL;
+
+ fmt->ops = ngx_array_create(cf->pool, 16, sizeof(ngx_http_log_op_t));
+ if (fmt->ops == NULL) {
+ return NULL;
+ }
+
+ 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 NULL;
+ }
+
+ conf->open_file_cache = NGX_CONF_UNSET_PTR;
+
+ 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->open_file_cache == NGX_CONF_UNSET_PTR) {
+
+ conf->open_file_cache = prev->open_file_cache;
+ conf->open_file_cache_valid = prev->open_file_cache_valid;
+ conf->open_file_cache_min_uses = prev->open_file_cache_min_uses;
+
+ if (conf->open_file_cache == NGX_CONF_UNSET_PTR) {
+ conf->open_file_cache = NULL;
+ }
+ }
+
+ if (conf->logs || conf->off) {
+ return NGX_CONF_OK;
+ }
+
+ conf->logs = prev->logs;
+ conf->off = prev->off;
+
+ if (conf->logs || conf->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;
+ }
+
+ ngx_memzero(log, sizeof(ngx_http_log_t));
+
+ log->file = ngx_conf_open_file(cf->cycle, &ngx_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->format = &fmt[0];
+ 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 size;
+ ngx_int_t gzip;
+ ngx_uint_t i, n;
+ ngx_msec_t flush;
+ ngx_str_t *value, name, s;
+ ngx_http_log_t *log;
+ ngx_syslog_peer_t *peer;
+ ngx_http_log_buf_t *buffer;
+ ngx_http_log_fmt_t *fmt;
+ ngx_http_log_main_conf_t *lmcf;
+ ngx_http_script_compile_t sc;
+ ngx_http_compile_complex_value_t ccv;
+
+ value = cf->args->elts;
+
+ if (ngx_strcmp(value[1].data, "off") == 0) {
+ llcf->off = 1;
+ if (cf->args->nelts == 2) {
+ return NGX_CONF_OK;
+ }
+
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid parameter \"%V\"", &value[2]);
+ return NGX_CONF_ERROR;
+ }
+
+ 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;
+ }
+
+ ngx_memzero(log, sizeof(ngx_http_log_t));
+
+
+ if (ngx_strncmp(value[1].data, "syslog:", 7) == 0) {
+
+ peer = ngx_pcalloc(cf->pool, sizeof(ngx_syslog_peer_t));
+ if (peer == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (ngx_syslog_process_conf(cf, peer) != NGX_CONF_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ log->syslog_peer = peer;
+
+ goto process_formats;
+ }
+
+ n = ngx_http_script_variables_count(&value[1]);
+
+ if (n == 0) {
+ log->file = ngx_conf_open_file(cf->cycle, &value[1]);
+ if (log->file == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ } else {
+ if (ngx_conf_full_name(cf->cycle, &value[1], 0) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ log->script = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_script_t));
+ if (log->script == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
+
+ sc.cf = cf;
+ sc.source = &value[1];
+ sc.lengths = &log->script->lengths;
+ sc.values = &log->script->values;
+ sc.variables = n;
+ sc.complete_lengths = 1;
+ sc.complete_values = 1;
+
+ if (ngx_http_script_compile(&sc) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+process_formats:
+
+ if (cf->args->nelts >= 3) {
+ name = value[2];
+
+ if (ngx_strcmp(name.data, "combined") == 0) {
+ lmcf->combined_used = 1;
+ }
+
+ } else {
+ ngx_str_set(&name, "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->format = &fmt[i];
+ break;
+ }
+ }
+
+ if (log->format == NULL) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "unknown log format \"%V\"", &name);
+ return NGX_CONF_ERROR;
+ }
+
+ size = 0;
+ flush = 0;
+ gzip = 0;
+
+ for (i = 3; i < cf->args->nelts; i++) {
+
+ if (ngx_strncmp(value[i].data, "buffer=", 7) == 0) {
+ s.len = value[i].len - 7;
+ s.data = value[i].data + 7;
+
+ size = ngx_parse_size(&s);
+
+ if (size == NGX_ERROR || size == 0) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid buffer size \"%V\"", &s);
+ return NGX_CONF_ERROR;
+ }
+
+ continue;
+ }
+
+ if (ngx_strncmp(value[i].data, "flush=", 6) == 0) {
+ s.len = value[i].len - 6;
+ s.data = value[i].data + 6;
+
+ flush = ngx_parse_time(&s, 0);
+
+ if (flush == (ngx_msec_t) NGX_ERROR || flush == 0) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid flush time \"%V\"", &s);
+ return NGX_CONF_ERROR;
+ }
+
+ continue;
+ }
+
+ if (ngx_strncmp(value[i].data, "gzip", 4) == 0
+ && (value[i].len == 4 || value[i].data[4] == '='))
+ {
+#if (NGX_ZLIB)
+ if (size == 0) {
+ size = 64 * 1024;
+ }
+
+ if (value[i].len == 4) {
+ gzip = Z_BEST_SPEED;
+ continue;
+ }
+
+ s.len = value[i].len - 5;
+ s.data = value[i].data + 5;
+
+ gzip = ngx_atoi(s.data, s.len);
+
+ if (gzip < 1 || gzip > 9) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid compression level \"%V\"", &s);
+ return NGX_CONF_ERROR;
+ }
+
+ continue;
+
+#else
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "nginx was built without zlib support");
+ return NGX_CONF_ERROR;
+#endif
+ }
+
+ if (ngx_strncmp(value[i].data, "if=", 3) == 0) {
+ s.len = value[i].len - 3;
+ s.data = value[i].data + 3;
+
+ ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &s;
+ ccv.complex_value = ngx_palloc(cf->pool,
+ sizeof(ngx_http_complex_value_t));
+ if (ccv.complex_value == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ log->filter = ccv.complex_value;
+
+ continue;
+ }
+
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid parameter \"%V\"", &value[i]);
+ return NGX_CONF_ERROR;
+ }
+
+ if (flush && size == 0) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "no buffer is defined for access_log \"%V\"",
+ &value[1]);
+ return NGX_CONF_ERROR;
+ }
+
+ if (size) {
+
+ if (log->script) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "buffered logs cannot have variables in name");
+ return NGX_CONF_ERROR;
+ }
+
+ if (log->syslog_peer) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "logs to syslog cannot be buffered");
+ return NGX_CONF_ERROR;
+ }
+
+ if (log->file->data) {
+ buffer = log->file->data;
+
+ if (buffer->last - buffer->start != size
+ || buffer->flush != flush
+ || buffer->gzip != gzip)
+ {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "access_log \"%V\" already defined "
+ "with conflicting parameters",
+ &value[1]);
+ return NGX_CONF_ERROR;
+ }
+
+ return NGX_CONF_OK;
+ }
+
+ buffer = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_buf_t));
+ if (buffer == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ buffer->start = ngx_pnalloc(cf->pool, size);
+ if (buffer->start == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ buffer->pos = buffer->start;
+ buffer->last = buffer->start + size;
+
+ if (flush) {
+ buffer->event = ngx_pcalloc(cf->pool, sizeof(ngx_event_t));
+ if (buffer->event == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ buffer->event->data = log->file;
+ buffer->event->handler = ngx_http_log_flush_handler;
+ buffer->event->log = &cf->cycle->new_log;
+ buffer->event->cancelable = 1;
+
+ buffer->flush = flush;
+ }
+
+ buffer->gzip = gzip;
+
+ log->file->flush = ngx_http_log_flush;
+ log->file->data = buffer;
+ }
+
+ 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)
+ {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "duplicate \"log_format\" name \"%V\"",
+ &value[1]);
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ fmt = ngx_array_push(&lmcf->formats);
+ if (fmt == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ fmt->name = value[1];
+
+ fmt->flushes = ngx_array_create(cf->pool, 4, sizeof(ngx_int_t));
+ if (fmt->flushes == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ 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->flushes, fmt->ops, cf->args, 2);
+}
+
+
+static char *
+ngx_http_log_compile_format(ngx_conf_t *cf, ngx_array_t *flushes,
+ ngx_array_t *ops, ngx_array_t *args, ngx_uint_t s)
+{
+ u_char *data, *p, ch;
+ size_t i, len;
+ ngx_str_t *value, var;
+ ngx_int_t *flush;
+ ngx_uint_t bracket, json;
+ ngx_http_log_op_t *op;
+ ngx_http_log_var_t *v;
+
+ json = 0;
+ value = args->elts;
+
+ if (s < args->nelts && ngx_strncmp(value[s].data, "escape=", 7) == 0) {
+ data = value[s].data + 7;
+
+ if (ngx_strcmp(data, "json") == 0) {
+ json = 1;
+
+ } else if (ngx_strcmp(data, "default") != 0) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "unknown log format escaping \"%s\"", data);
+ return NGX_CONF_ERROR;
+ }
+
+ s++;
+ }
+
+ 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] == '$') {
+
+ if (++i == value[s].len) {
+ goto invalid;
+ }
+
+ if (value[s].data[i] == '{') {
+ bracket = 1;
+
+ if (++i == value[s].len) {
+ goto invalid;
+ }
+
+ var.data = &value[s].data[i];
+
+ } else {
+ bracket = 0;
+ var.data = &value[s].data[i];
+ }
+
+ for (var.len = 0; i < value[s].len; i++, var.len++) {
+ ch = value[s].data[i];
+
+ if (ch == '}' && bracket) {
+ i++;
+ bracket = 0;
+ break;
+ }
+
+ if ((ch >= 'A' && ch <= 'Z')
+ || (ch >= 'a' && ch <= 'z')
+ || (ch >= '0' && ch <= '9')
+ || ch == '_')
+ {
+ continue;
+ }
+
+ break;
+ }
+
+ if (bracket) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "the closing bracket in \"%V\" "
+ "variable is missing", &var);
+ return NGX_CONF_ERROR;
+ }
+
+ if (var.len == 0) {
+ goto invalid;
+ }
+
+ for (v = ngx_http_log_vars; v->name.len; v++) {
+
+ if (v->name.len == var.len
+ && ngx_strncmp(v->name.data, var.data, var.len) == 0)
+ {
+ op->len = v->len;
+ op->getlen = NULL;
+ op->run = v->run;
+ op->data = 0;
+
+ goto found;
+ }
+ }
+
+ if (ngx_http_log_variable_compile(cf, op, &var, json)
+ != NGX_OK)
+ {
+ return NGX_CONF_ERROR;
+ }
+
+ if (flushes) {
+
+ flush = ngx_array_push(flushes);
+ if (flush == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ *flush = op->data; /* variable index */
+ }
+
+ found:
+
+ continue;
+ }
+
+ i++;
+
+ while (i < value[s].len && value[s].data[i] != '$') {
+ 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_pnalloc(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 char *
+ngx_http_log_open_file_cache(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ ngx_http_log_loc_conf_t *llcf = conf;
+
+ time_t inactive, valid;
+ ngx_str_t *value, s;
+ ngx_int_t max, min_uses;
+ ngx_uint_t i;
+
+ if (llcf->open_file_cache != NGX_CONF_UNSET_PTR) {
+ return "is duplicate";
+ }
+
+ value = cf->args->elts;
+
+ max = 0;
+ inactive = 10;
+ valid = 60;
+ min_uses = 1;
+
+ for (i = 1; i < cf->args->nelts; i++) {
+
+ if (ngx_strncmp(value[i].data, "max=", 4) == 0) {
+
+ max = ngx_atoi(value[i].data + 4, value[i].len - 4);
+ if (max == NGX_ERROR) {
+ goto failed;
+ }
+
+ continue;
+ }
+
+ if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
+
+ s.len = value[i].len - 9;
+ s.data = value[i].data + 9;
+
+ inactive = ngx_parse_time(&s, 1);
+ if (inactive == (time_t) NGX_ERROR) {
+ goto failed;
+ }
+
+ continue;
+ }
+
+ if (ngx_strncmp(value[i].data, "min_uses=", 9) == 0) {
+
+ min_uses = ngx_atoi(value[i].data + 9, value[i].len - 9);
+ if (min_uses == NGX_ERROR) {
+ goto failed;
+ }
+
+ continue;
+ }
+
+ if (ngx_strncmp(value[i].data, "valid=", 6) == 0) {
+
+ s.len = value[i].len - 6;
+ s.data = value[i].data + 6;
+
+ valid = ngx_parse_time(&s, 1);
+ if (valid == (time_t) NGX_ERROR) {
+ goto failed;
+ }
+
+ continue;
+ }
+
+ if (ngx_strcmp(value[i].data, "off") == 0) {
+
+ llcf->open_file_cache = NULL;
+
+ continue;
+ }
+
+ failed:
+
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid \"open_log_file_cache\" parameter \"%V\"",
+ &value[i]);
+ return NGX_CONF_ERROR;
+ }
+
+ if (llcf->open_file_cache == NULL) {
+ return NGX_CONF_OK;
+ }
+
+ if (max == 0) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "\"open_log_file_cache\" must have \"max\" parameter");
+ return NGX_CONF_ERROR;
+ }
+
+ llcf->open_file_cache = ngx_open_file_cache_init(cf->pool, max, inactive);
+
+ if (llcf->open_file_cache) {
+
+ llcf->open_file_cache_valid = valid;
+ llcf->open_file_cache_min_uses = min_uses;
+
+ return NGX_CONF_OK;
+ }
+
+ 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, NULL, 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;
+}