Mercurial > hg > nginx-quic
view src/http/ngx_http_log_handler.c @ 342:0ee0642af5f1
nginx-0.0.3-2004-05-26-23:33:53 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 26 May 2004 19:33:53 +0000 |
parents | 5cfd65b8b0a7 |
children | 2e3cbc1bbe3c |
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line source
#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, uintptr_t data); static u_char *ngx_http_log_connection(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_time(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_status(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_length(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_transfer_encoding_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data); static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data); static int ngx_http_log_pre_conf(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 int ngx_http_log_parse_format(ngx_conf_t *cf, ngx_array_t *ops, ngx_str_t *line); 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_pre_conf, /* 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 child */ }; static ngx_str_t http_access_log = ngx_string("access.log"); 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, ngx_http_log_addr }, { ngx_string("conn"), NGX_INT32_LEN, ngx_http_log_connection }, { ngx_string("pipe"), 1, ngx_http_log_pipe }, { ngx_string("time"), sizeof("28/Sep/1970:12:00:00") - 1, ngx_http_log_time }, { ngx_string("request"), 0, ngx_http_log_request }, { ngx_string("status"), 3, ngx_http_log_status }, { ngx_string("length"), NGX_OFF_T_LEN, ngx_http_log_length }, { ngx_string("apache_length"), NGX_OFF_T_LEN, ngx_http_log_apache_length }, { ngx_string("i"), NGX_HTTP_LOG_ARG, ngx_http_log_header_in }, { ngx_string("o"), NGX_HTTP_LOG_ARG, ngx_http_log_header_out }, { ngx_null_string, 0, NULL } }; int ngx_http_log_handler(ngx_http_request_t *r) { ngx_uint_t i, l; uintptr_t data; 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 (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); 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 += (size_t) op[i].op(r, NULL, op[i].data); } else { len += op[i].len; } } #if (WIN32) len += 2; #else len++; #endif ngx_test_null(line, ngx_palloc(r->pool, len), NGX_ERROR); p = line; for (i = 0; i < log[l].ops->nelts; i++) { if (op[i].op == NGX_HTTP_LOG_COPY_SHORT) { len = op[i].len; data = op[i].data; while (len--) { *p++ = (char) (data & 0xff); data >>= 8; } } else if (op[i].op == NGX_HTTP_LOG_COPY_LONG) { p = ngx_cpymem(p, (void *) op[i].data, op[i].len); } else { p = op[i].op(r, p, op[i].data); } } #if (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_addr(ngx_http_request_t *r, u_char *buf, uintptr_t data) { 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, uintptr_t data) { return buf + ngx_snprintf((char *) buf, NGX_INT32_LEN + 1, "%u", r->connection->number); } static u_char *ngx_http_log_pipe(ngx_http_request_t *r, u_char *buf, uintptr_t data) { 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, uintptr_t data) { return ngx_cpymem(buf, ngx_cached_http_log_time.data, ngx_cached_http_log_time.len); } static u_char *ngx_http_log_request(ngx_http_request_t *r, u_char *buf, uintptr_t data) { if (buf == NULL) { /* find the request line length */ return (u_char *) r->request_line.len; } 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, uintptr_t data) { return buf + ngx_snprintf((char *) buf, 4, "%d", 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, uintptr_t data) { return buf + ngx_snprintf((char *) buf, NGX_OFF_T_LEN + 1, OFF_T_FMT, r->connection->sent); } static u_char *ngx_http_log_apache_length(ngx_http_request_t *r, u_char *buf, uintptr_t data) { return buf + ngx_snprintf((char *) buf, NGX_OFF_T_LEN + 1, OFF_T_FMT, r->connection->sent - r->header_size); } static u_char *ngx_http_log_header_in(ngx_http_request_t *r, u_char *buf, uintptr_t data) { ngx_uint_t i; ngx_str_t *s; ngx_table_elt_t *h; ngx_http_log_op_t *op; if (r) { h = *(ngx_table_elt_t **) ((char *) &r->headers_in + data); if (h == NULL) { /* no header */ if (buf) { *buf = '-'; } return buf + 1; } if (buf == NULL) { /* find the header length */ return (u_char *) h->value.len; } return ngx_cpymem(buf, h->value.data, h->value.len); } /* find an offset while a format string compilation */ op = (ngx_http_log_op_t *) buf; s = (ngx_str_t *) data; op->len = 0; for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) { if (ngx_http_headers_in[i].name.len != s->len) { continue; } if (ngx_strncasecmp(ngx_http_headers_in[i].name.data, s->data, s->len) == 0) { op->op = ngx_http_log_header_in; op->data = ngx_http_headers_in[i].offset; return NULL; } } op->op = ngx_http_log_unknown_header_in; op->data = (uintptr_t) s; return NULL; } static u_char *ngx_http_log_unknown_header_in(ngx_http_request_t *r, u_char *buf, uintptr_t data) { ngx_uint_t i; ngx_str_t *s; ngx_table_elt_t *h; s = (ngx_str_t *) data; h = r->headers_in.headers.elts; for (i = 0; i < r->headers_in.headers.nelts; i++) { if (h[i].key.len != s->len) { continue; } if (ngx_strncasecmp(h[i].key.data, s->data, s->len) == 0) { if (buf == NULL) { /* find the header length */ return (u_char *) h[i].value.len; } return ngx_cpymem(buf, h[i].value.data, h[i].value.len); } } /* no header */ if (buf) { *buf = '-'; } return buf + 1; } static u_char *ngx_http_log_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data) { ngx_uint_t i; ngx_str_t *s; ngx_table_elt_t *h; ngx_http_log_op_t *op; if (r) { /* run-time execution */ if (r->http_version < NGX_HTTP_VERSION_10) { if (buf) { *buf = '-'; } return buf + 1; } h = *(ngx_table_elt_t **) ((char *) &r->headers_out + data); if (h == NULL) { /* * 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)) { if (buf == NULL) { return (u_char *) ngx_cached_http_time.len; } return ngx_cpymem(buf, ngx_cached_http_time.data, ngx_cached_http_time.len); } if (data == offsetof(ngx_http_headers_out_t, server)) { if (buf == NULL) { return (u_char *) (sizeof(NGINX_VER) - 1); } return ngx_cpymem(buf, NGINX_VER, sizeof(NGINX_VER) - 1); } if (data == offsetof(ngx_http_headers_out_t, content_length)) { if (r->headers_out.content_length_n == -1) { if (buf) { *buf = '-'; } return buf + 1; } if (buf == NULL) { return (u_char *) NGX_OFF_T_LEN; } return buf + ngx_snprintf((char *) buf, NGX_OFF_T_LEN + 2, OFF_T_FMT, r->headers_out.content_length_n); } if (data == offsetof(ngx_http_headers_out_t, last_modified)) { if (r->headers_out.last_modified_time == -1) { if (buf) { *buf = '-'; } return buf + 1; } if (buf == NULL) { return (u_char *) sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1; } return buf + ngx_http_time(buf, r->headers_out.last_modified_time); } if (buf) { *buf = '-'; } return buf + 1; } if (buf == NULL) { /* find the header length */ return (u_char *) h->value.len; } return ngx_cpymem(buf, h->value.data, h->value.len); } /* find an offset while a format string compilation */ op = (ngx_http_log_op_t *) buf; s = (ngx_str_t *) data; op->len = 0; for (i = 0; ngx_http_headers_out[i].name.len != 0; i++) { if (ngx_http_headers_out[i].name.len != s->len) { continue; } if (ngx_strncasecmp(ngx_http_headers_out[i].name.data, s->data, s->len) == 0) { op->op = ngx_http_log_header_out; op->data = ngx_http_headers_out[i].offset; return NULL; } } if (s->len == sizeof("Connection") - 1 && ngx_strncasecmp(s->data, "Connection", s->len) == 0) { op->op = ngx_http_log_connection_header_out; op->data = (uintptr_t) NULL; return NULL; } if (s->len == sizeof("Transfer-Encoding") - 1 && ngx_strncasecmp(s->data, "Transfer-Encoding", s->len) == 0) { op->op = ngx_http_log_transfer_encoding_header_out; op->data = (uintptr_t) NULL; return NULL; } op->op = ngx_http_log_unknown_header_out; op->data = (uintptr_t) s; return NULL; } static u_char *ngx_http_log_connection_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data) { if (buf == NULL) { return (u_char *) ((r->keepalive) ? sizeof("keep-alive") - 1: sizeof("close") - 1); } 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, uintptr_t data) { if (buf == NULL) { return (u_char *) ((r->chunked) ? sizeof("chunked") - 1 : 1); } if (r->chunked) { return ngx_cpymem(buf, "chunked", sizeof("chunked") - 1); } *buf = '-'; return buf + 1; } static u_char *ngx_http_log_unknown_header_out(ngx_http_request_t *r, u_char *buf, uintptr_t data) { ngx_uint_t i; ngx_str_t *s; ngx_table_elt_t *h; s = (ngx_str_t *) data; h = r->headers_out.headers.elts; for (i = 0; i < r->headers_out.headers.nelts; i++) { if (h[i].key.len != s->len) { continue; } if (ngx_strncasecmp(h[i].key.data, s->data, s->len) == 0) { if (buf == NULL) { /* find the header length */ return (u_char *) h[i].value.len; } return ngx_cpymem(buf, h[i].value.data, h[i].value.len); } } /* no header */ if (buf) { *buf = '-'; } return buf + 1; } static int ngx_http_log_pre_conf(ngx_conf_t *cf) { ngx_http_log_op_name_t *op; for (op = ngx_http_log_fmt_ops; op->name.len; op++) { /* void */ } op->op = 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; if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_log_main_conf_t)))) { return NGX_CONF_ERROR; } ngx_init_array(conf->formats, cf->pool, 5, sizeof(ngx_http_log_fmt_t), NGX_CONF_ERROR); cf->args->nelts = 0; if (!(value = ngx_push_array(cf->args))) { return NGX_CONF_ERROR; } if (!(value = ngx_push_array(cf->args))) { return NGX_CONF_ERROR; } value->len = sizeof("combined") - 1; value->data = (u_char *) "combined"; if (!(value = ngx_push_array(cf->args))) { 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; ngx_test_null(conf, ngx_pcalloc(cf->pool, sizeof(ngx_http_log_loc_conf_t)), 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 (prev->logs) { conf->logs = prev->logs; } else { conf->logs = ngx_create_array(cf->pool, 2, sizeof(ngx_http_log_t)); if (conf->logs == NULL) { return NGX_CONF_ERROR; } if (!(log = ngx_push_array(conf->logs))) { 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_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; if (llcf->logs == NULL) { if (!(llcf->logs = ngx_create_array(cf->pool, 2, sizeof(ngx_http_log_t)))) { return NGX_CONF_ERROR; } } value = cf->args->elts; lmcf = ngx_http_conf_module_main_conf(cf, ngx_http_log_module); if (!(log = ngx_push_array(llcf->logs))) { return NGX_CONF_ERROR; } if (!(log->file = ngx_conf_open_file(cf->cycle, &value[1]))) { 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; } } 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_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"; } } if (!(fmt = ngx_push_array(&lmcf->formats))) { return NGX_CONF_ERROR; } fmt->name = value[1]; if (!(fmt->ops = ngx_create_array(cf->pool, 20, sizeof(ngx_http_log_op_t)))) { return NGX_CONF_ERROR; } invalid = 0; data = NULL; for (s = 2; s < cf->args->nelts && !invalid; s++) { i = 0; while (i < value[s].len) { if (!(op = ngx_push_array(fmt->ops))) { 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->op; name++) { if (name->name.len == 0) { name = (ngx_http_log_op_name_t *) name->op; } if (name->name.len == fname_len && ngx_strncmp(name->name.data, fname, fname_len) == 0) { if (name->len != NGX_HTTP_LOG_ARG) { 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->op = name->op; 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; } if (!(a = ngx_palloc(cf->pool, sizeof(ngx_str_t)))) { return NGX_CONF_ERROR; } *a = arg; name->op(NULL, (u_char *) op, (uintptr_t) a); 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; if (len <= sizeof(uintptr_t)) { op->op = NGX_HTTP_LOG_COPY_SHORT; op->data = 0; while (len--) { op->data <<= 8; op->data |= data[len]; } } else { op->op = NGX_HTTP_LOG_COPY_LONG; if (!(p = ngx_palloc(cf->pool, len))) { 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; }