/* * Copyright (C) Igor Sysoev */ #include #include #include #include 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_length(ngx_http_request_t *r, u_char *buf, ngx_http_log_op_t *op); static u_char *ngx_http_log_apache_length(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 ngx_int_t ngx_http_log_init(ngx_cycle_t *cycle); 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_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 */ NULL, /* 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 */ ngx_http_log_init, /* 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 = #if 0 ngx_string("$remote_addr - $remote_user [%time] " "\"$request\" %status %apache_length " "\"$http_referer\" \"$http_user_agent\""); #endif ngx_string("%addr - - [%time] " "\"%request\" %status %apache_length " "\"%{referer}i\" \"%{user-agent}i\""); 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_length }, { ngx_string("apache_length"), NGX_OFF_T_LEN, NULL, NULL, ngx_http_log_apache_length }, { 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++) { 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)) { ngx_write_fd(file->fd, file->buffer, file->pos - file->buffer); 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); ngx_write_fd(file->fd, line, p - line); } 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_length(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_apache_length(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 == NGX_HTTP_VAR_NOT_FOUND || value->text.len == 0) { return 1; } return value->text.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 == NGX_HTTP_VAR_NOT_FOUND || value->text.len == 0) { *buf = '-'; return buf + 1; } return ngx_cpymem(buf, value->text.data, value->text.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; char *rc; ngx_str_t *value; 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_ERROR) { return NGX_CONF_ERROR; } cf->args->nelts = 0; value = ngx_array_push(cf->args); if (value == NULL) { return NGX_CONF_ERROR; } value->len = 0; value->data = NULL; value = ngx_array_push(cf->args); if (value == NULL) { return NGX_CONF_ERROR; } value->len = sizeof("combined") - 1; value->data = (u_char *) "combined"; value = ngx_array_push(cf->args); if (value == NULL) { return NGX_CONF_ERROR; } *value = ngx_http_combined_fmt; rc = ngx_http_log_set_format(cf, NULL, conf); if (rc != NGX_CONF_OK) { 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; } } 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; } if (cf->args->nelts >= 3) { name = value[2]; } else { name.len = sizeof("combined") - 1; name.data = (u_char *) "combined"; } 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; u_char *data, *p, *fname, ch; size_t i, len, fname_len; ngx_str_t *value, var, arg, *a; ngx_uint_t s, f, bracket; ngx_http_log_op_t *op; ngx_http_log_fmt_t *fmt; ngx_http_log_op_name_t *name; value = cf->args->elts; fmt = lmcf->formats.elts; for (f = 0; f < lmcf->formats.nelts; f++) { if (fmt[f].name.len == value[1].len && ngx_strcmp(fmt->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, 20, sizeof(ngx_http_log_op_t)); if (fmt->ops == NULL) { return NGX_CONF_ERROR; } arg.data = NULL; for (s = 2; s < cf->args->nelts; s++) { i = 0; while (i < value[s].len) { op = ngx_array_push(fmt->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; } 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 = arg; if (name->compile(cf, op, a) == NGX_ERROR) { return NGX_CONF_ERROR; } break; } } if (name->name.len == 0) { goto invalid; } } else if (value[s].data[i] == '$') { if (++i == value[s].len) { goto invalid; } if (value[s].data[i] == '{') { bracket = 1; if (++i == value[s].len) { goto invalid; } var.data = &value[s].data[i]; } else { bracket = 0; var.data = &value[s].data[i]; } for (var.len = 0; i < value[s].len; i++, var.len++) { ch = value[s].data[i]; if (ch == '}' && bracket) { i++; bracket = 0; break; } if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9') || ch == '_') { continue; } break; } if (bracket) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "the closing bracket in \"%V\" " "variable is missing", &var); return NGX_CONF_ERROR; } if (var.len == 0) { goto invalid; } if (ngx_http_log_variable_compile(cf, op, &var) != NGX_OK) { return NGX_CONF_ERROR; } } else { i++; while (i < value[s].len && value[s].data[i] != '$' && 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_cycle_t *cycle) { ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module); cmcf->log_handler = ngx_http_log_handler; return NGX_OK; }