diff options
Diffstat (limited to 'src/http/ngx_http_log_module.c')
| -rw-r--r-- | src/http/ngx_http_log_module.c | 1181 |
1 files changed, 1181 insertions, 0 deletions
diff --git a/src/http/ngx_http_log_module.c b/src/http/ngx_http_log_module.c new file mode 100644 index 000000000..d19cae7d4 --- /dev/null +++ b/src/http/ngx_http_log_module.c @@ -0,0 +1,1181 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> +#include <nginx.h> + + +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_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_TAKE12, + 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, /* pre conf */ + + 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, + &ngx_http_log_module_ctx, /* module context */ + ngx_http_log_commands, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + NULL, /* init module */ + NULL /* init process */ +}; + + +static ngx_str_t http_access_log = ngx_string(NGX_HTTP_LOG_PATH); + + +static ngx_str_t ngx_http_combined_fmt = + 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_http_log_op_t *op; + ngx_http_log_loc_conf_t *lcf; +#if (NGX_WIN32) + u_long written; +#endif + + 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; + } + } + +#if (NGX_WIN32) + len += 2; +#else + len++; +#endif + + 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]); + } + +#if (NGX_WIN32) + *p++ = CR; *p++ = LF; + WriteFile(log[l].file->fd, line, p - line, &written, NULL); +#else + *p++ = LF; + write(log[l].file->fd, line, p - line); +#endif + } + + 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) +{ + struct timeval tv; + + ngx_gettimeofday(&tv); + + return ngx_sprintf(buf, "%l.%03l", tv.tv_sec, tv.tv_usec / 1000); +} + + +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; + } + + 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_uint_t i; + ngx_http_variable_t *var; + + for (i = 0; i < value->len; i++) { + value->data[i] = ngx_toupper(value->data[i]); + } + + var = ngx_http_add_variable(cf, value, 0); + if (var == NULL) { + return NGX_ERROR; + } + + op->len = 0; + op->getlen = ngx_http_log_variable_getlen; + op->run = ngx_http_log_variable; + op->data = var->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_VARIABLE_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_VARIABLE_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 = 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 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 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; + + 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; + return NGX_CONF_OK; + } + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "unknown log format \"%V\"", &name); + + return NGX_CONF_ERROR; +} + + +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_uint_t s, f, invalid; + u_char *data, *p, *fname; + size_t i, len, fname_len; + ngx_str_t *value, arg, *a; + 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; + } + + invalid = 0; + data = NULL; + arg.data = NULL; + + for (s = 2; s < cf->args->nelts && !invalid; 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) { + invalid = 1; + break; + } + + 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) { + invalid = 1; + break; + } + + 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) { + invalid = 1; + break; + } + + 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) { + invalid = 1; + break; + } + + } else { + 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_palloc(cf->pool, len); + if (p == NULL) { + return NGX_CONF_ERROR; + } + + ngx_memcpy(p, data, len); + op->data = (uintptr_t) p; + } + } + } + } + } + + if (invalid) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid parameter \"%s\"", data); + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} |