nginx/src/http/ngx_http_event.c

993 lines
27 KiB
C
Raw Normal View History

2002-09-13 22:47:42 +08:00
/*
2002-09-16 23:01:44 +08:00
TODO: Win32 inet_ntoa
ngx_inet_ntop
2002-09-13 22:47:42 +08:00
*/
#include <ngx_config.h>
2002-08-26 23:18:19 +08:00
#include <ngx_core.h>
#include <ngx_string.h>
2002-09-02 22:48:24 +08:00
#include <ngx_files.h>
#include <ngx_log.h>
#include <ngx_alloc.h>
#include <ngx_array.h>
#include <ngx_table.h>
#include <ngx_hunk.h>
#include <ngx_connection.h>
#include <ngx_http.h>
2002-09-11 23:18:33 +08:00
#include <ngx_http_config.h>
2002-09-16 23:01:44 +08:00
#include <ngx_http_core.h>
2002-09-02 22:48:24 +08:00
/* STUB */
#include <ngx_http_output_filter.h>
int ngx_http_static_handler(ngx_http_request_t *r);
2002-09-11 23:18:33 +08:00
int ngx_http_index_handler(ngx_http_request_t *r);
int ngx_http_proxy_handler(ngx_http_request_t *r);
2002-09-11 23:18:33 +08:00
/* */
2002-09-02 22:48:24 +08:00
2002-08-26 23:18:19 +08:00
int ngx_http_init_connection(ngx_connection_t *c);
static int ngx_http_init_request(ngx_event_t *ev);
static int ngx_http_process_request(ngx_event_t *ev);
2002-08-30 00:59:54 +08:00
static int ngx_http_process_request_line(ngx_http_request_t *r);
static int ngx_http_process_request_header(ngx_http_request_t *r);
2002-09-02 22:48:24 +08:00
static int ngx_http_process_request_header_line(ngx_http_request_t *r);
2002-09-02 22:48:24 +08:00
static int ngx_http_block_read(ngx_event_t *ev);
static int ngx_http_read_discarded_body(ngx_event_t *ev);
2002-09-16 23:01:44 +08:00
static int ngx_http_event_handler(ngx_http_request_t *r);
2002-09-02 22:48:24 +08:00
static int ngx_http_handler(ngx_http_request_t *r);
static int ngx_http_set_default_handler(ngx_http_request_t *r);
static int ngx_http_writer(ngx_event_t *ev);
2002-09-16 23:01:44 +08:00
static int ngx_http_set_lingering_close(ngx_http_request_t *r);
2002-09-13 22:47:42 +08:00
static int ngx_http_keepalive_handler(ngx_event_t *ev);
2002-09-12 22:42:29 +08:00
static int ngx_http_lingering_close(ngx_event_t *ev);
2002-09-02 22:48:24 +08:00
static int ngx_http_special_response(ngx_http_request_t *r, int error);
static int ngx_http_redirect(ngx_http_request_t *r, int redirect);
static int ngx_http_error(ngx_http_request_t *r, int error);
2002-08-30 00:59:54 +08:00
static int ngx_http_close_request(ngx_http_request_t *r);
2002-10-05 01:58:04 +08:00
static int ngx_http_close_connection(ngx_event_t *ev);
2002-08-26 23:18:19 +08:00
static size_t ngx_http_log_error(void *data, char *buf, size_t len);
2002-08-26 23:18:19 +08:00
2002-08-30 00:59:54 +08:00
static char *header_errors[] = {
"client %s sent invalid method",
"client %s sent invalid request",
2002-09-13 22:47:42 +08:00
"client %s sent too long URI",
2002-08-30 00:59:54 +08:00
"client %s sent HEAD method in HTTP/0.9 request"
};
static ngx_http_header_t headers_in[] = {
{ 4, "Host", offsetof(ngx_http_headers_in_t, host) },
{ 10, "Connection", offsetof(ngx_http_headers_in_t, connection) },
{ 10, "User-Agent", offsetof(ngx_http_headers_in_t, user_agent) },
{ 0, NULL, 0 }
};
int ngx_http_init_connection(ngx_connection_t *c)
{
2002-08-26 23:18:19 +08:00
ngx_event_t *ev;
struct sockaddr *addr;
2002-09-16 23:01:44 +08:00
ngx_http_server_t *srv;
2002-08-26 23:18:19 +08:00
ngx_http_log_ctx_t *ctx;
ev = c->read;
ev->event_handler = ngx_http_init_request;
2002-10-05 01:58:04 +08:00
2002-09-16 23:01:44 +08:00
srv = (ngx_http_server_t *) c->server;
2002-09-13 22:47:42 +08:00
ngx_test_null(c->pool,
ngx_create_pool(srv->connection_pool_size, ev->log),
NGX_ERROR);
2002-10-05 01:58:04 +08:00
ngx_test_null(c->requests, ngx_create_array(c->pool, 10, sizeof(char *)),
NGX_ERROR);
ev->close_handler = ngx_http_close_connection;
c->write->close_handler = ngx_http_close_connection;
2002-08-26 23:18:19 +08:00
ngx_test_null(addr, ngx_palloc(c->pool, c->socklen), NGX_ERROR);
ngx_memcpy(addr, c->sockaddr, c->socklen);
c->sockaddr = addr;
ngx_test_null(c->addr_text, ngx_palloc(c->pool, c->addr_textlen),
NGX_ERROR);
2002-09-02 22:48:24 +08:00
#if (WIN32)
2002-09-16 23:01:44 +08:00
c->addr_text = inet_ntoa((struct in_addr *)
((char *)c->sockaddr + c->addr));
2002-09-02 22:48:24 +08:00
#else
2002-08-26 23:18:19 +08:00
inet_ntop(c->family, (char *)c->sockaddr + c->addr,
c->addr_text, c->addr_textlen);
2002-09-02 22:48:24 +08:00
#endif
2002-08-26 23:18:19 +08:00
ngx_test_null(ctx, ngx_pcalloc(c->pool, sizeof(ngx_http_log_ctx_t)),
NGX_ERROR);
ctx->client = c->addr_text;
ctx->action = "reading client request line";
c->log->data = ctx;
c->log->handler = ngx_http_log_error;
#if (HAVE_DEFERRED_ACCEPT)
2002-08-30 00:59:54 +08:00
if (ev->ready) {
return ngx_http_init_request(ev);
2002-08-30 00:59:54 +08:00
} else {
#endif
2002-08-30 00:59:54 +08:00
ngx_add_timer(ev, c->post_accept_timeout);
2002-08-26 23:18:19 +08:00
#if (USE_KQUEUE)
return ngx_add_event(ev, NGX_READ_EVENT, NGX_CLEAR_EVENT);
#else
2002-08-26 23:18:19 +08:00
#if (HAVE_AIO_EVENT)
if (ngx_event_type == NGX_AIO_EVENT)
return ngx_http_init_request(ev);
else
#endif
#if (HAVE_CLEAR_EVENT)
if (ngx_event_type == NGX_KQUEUE_EVENT)
return ngx_add_event(ev, NGX_READ_EVENT, NGX_CLEAR_EVENT);
else
#endif
2002-08-30 00:59:54 +08:00
return ngx_add_event(ev, NGX_READ_EVENT, NGX_LEVEL_EVENT);
#endif /* USE_KQUEUE */
#if (HAVE_DEFERRED_ACCEPT)
}
#endif
}
2002-08-26 23:18:19 +08:00
2002-09-13 22:47:42 +08:00
static int ngx_http_init_request(ngx_event_t *ev)
{
2002-08-26 23:18:19 +08:00
ngx_connection_t *c;
ngx_http_server_t *srv;
ngx_http_request_t *r;
2002-08-26 23:18:19 +08:00
c = (ngx_connection_t *) ev->data;
srv = (ngx_http_server_t *) c->server;
2002-08-26 23:18:19 +08:00
ngx_test_null(r, ngx_pcalloc(c->pool, sizeof(ngx_http_request_t)),
NGX_ERROR);
c->data = r;
r->connection = c;
2002-08-20 22:48:28 +08:00
r->server = srv;
2002-09-11 23:18:33 +08:00
r->srv_conf = ngx_srv_conf;
r->loc_conf = ngx_loc_conf;
2002-09-16 23:01:44 +08:00
if (c->buffer == NULL) {
ngx_test_null(c->buffer,
ngx_create_temp_hunk(c->pool, srv->header_buffer_size,
0, 0),
NGX_ERROR);
} else {
r->header_read = 1;
}
r->header_in = c->buffer;
2002-09-02 22:48:24 +08:00
ngx_test_null(r->pool, ngx_create_pool(srv->request_pool_size, ev->log),
2002-08-30 00:59:54 +08:00
ngx_http_close_request(r));
2002-09-11 23:18:33 +08:00
ngx_test_null(r->ctx, ngx_pcalloc(r->pool, sizeof(void *) * ngx_max_module),
ngx_http_close_request(r));
ev->event_handler = ngx_http_process_request;
2002-08-30 00:59:54 +08:00
r->state_handler = ngx_http_process_request_line;
2002-09-02 22:48:24 +08:00
r->process_header = 1;
2002-09-13 22:47:42 +08:00
r->header_timeout = 1;
2002-08-26 23:18:19 +08:00
return ngx_http_process_request(ev);
}
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
static int ngx_http_process_request(ngx_event_t *ev)
{
2002-08-30 00:59:54 +08:00
int n, rc;
2002-08-26 23:18:19 +08:00
ngx_connection_t *c ;
ngx_http_request_t *r;
2002-09-13 22:47:42 +08:00
ngx_http_log_ctx_t *ctx;
2002-08-26 23:18:19 +08:00
c = (ngx_connection_t *) ev->data;
r = (ngx_http_request_t *) c->data;
ngx_log_debug(ev->log, "http process request");
2002-09-16 23:01:44 +08:00
if (r->header_read) {
r->header_read = 0;
ngx_log_debug(ev->log, "http preread %d" _
r->header_in->last.mem - r->header_in->pos.mem);
2002-09-16 23:01:44 +08:00
} else {
n = ngx_event_recv(c, r->header_in->last.mem,
r->header_in->end - r->header_in->last.mem);
if (n == NGX_AGAIN) {
if (r->header_timeout) {
r->header_timeout = 0;
ngx_del_timer(ev);
ngx_add_timer(ev, r->server->header_timeout);
}
return NGX_AGAIN;
2002-08-30 00:59:54 +08:00
}
2002-09-16 23:01:44 +08:00
if (n == NGX_ERROR)
return ngx_http_close_request(r);
2002-08-30 00:59:54 +08:00
2002-09-16 23:01:44 +08:00
ngx_log_debug(ev->log, "http read %d" _ n);
2002-09-16 23:01:44 +08:00
if (n == 0) {
if (c->unexpected_eof)
ngx_log_error(NGX_LOG_INFO, c->log, 0,
"client prematurely closed connection");
return ngx_http_close_request(r);
}
2002-09-16 23:01:44 +08:00
r->header_in->last.mem += n;
}
2002-08-30 00:59:54 +08:00
/* state_handlers are called in following order:
ngx_http_process_request_line(r)
ngx_http_process_request_header(r) */
2002-08-30 00:59:54 +08:00
do {
rc = (r->state_handler)(r);
2002-08-30 00:59:54 +08:00
if (rc == NGX_ERROR)
return rc;
2002-08-30 00:59:54 +08:00
/* rc == NGX_OK || rc == NGX_AGAIN */
2002-09-02 22:48:24 +08:00
} while (r->process_header
&& r->header_in->pos.mem < r->header_in->last.mem);
2002-09-13 22:47:42 +08:00
if (r->header_timeout) {
r->header_timeout = 0;
2002-08-30 00:59:54 +08:00
ngx_del_timer(ev);
ngx_add_timer(ev, r->server->header_timeout);
}
return rc;
}
2002-09-13 22:47:42 +08:00
2002-08-30 00:59:54 +08:00
static int ngx_http_process_request_line(ngx_http_request_t *r)
{
2002-10-05 01:58:04 +08:00
int rc, len;
char **request;
ngx_connection_t *c;
2002-08-30 00:59:54 +08:00
ngx_http_log_ctx_t *ctx;
rc = ngx_read_http_request_line(r);
2002-10-05 01:58:04 +08:00
c = r->connection;
2002-08-30 00:59:54 +08:00
if (rc == NGX_OK) {
2002-12-03 23:45:38 +08:00
len = r->uri_end - r->uri_start + 1;
ngx_test_null(r->uri, ngx_palloc(r->pool, len),
2002-08-30 00:59:54 +08:00
ngx_http_close_request(r));
2002-12-03 23:45:38 +08:00
ngx_cpystrn(r->uri, r->uri_start, len);
2002-12-03 23:45:38 +08:00
r->request_line.len = r->request_end - r->header_in->start;
ngx_test_null(r->request_line.data,
ngx_palloc(r->pool, r->request_line.len + 1),
ngx_http_close_request(r));
ngx_cpystrn(r->request_line.data, r->header_in->start,
r->request_line.len + 1);
/* TEMP */
2002-10-05 01:58:04 +08:00
ngx_test_null(request, ngx_push_array(c->requests),
ngx_http_close_request(r));
if (r->request_end)
len = r->request_end - r->header_in->start + 1;
else
len = 1;
c->requests_len += len;
ngx_test_null(*request, ngx_palloc(c->pool, len),
ngx_http_close_request(r));
ngx_cpystrn(*request, r->header_in->start, len);
ngx_log_debug(c->log, "REQ: '%s'" _ *request);
2002-12-03 23:45:38 +08:00
/* */
2002-10-05 01:58:04 +08:00
2002-09-16 23:01:44 +08:00
if (r->uri_ext) {
ngx_test_null(r->exten,
ngx_palloc(r->pool, r->uri_end - r->uri_ext + 1),
ngx_http_close_request(r));
ngx_cpystrn(r->exten, r->uri_ext, r->uri_end - r->uri_ext + 1);
}
ngx_log_debug(r->connection->log, "HTTP: %d, %d, %s %s" _
r->method _ r->http_version _ r->uri _ r->exten);
2002-08-30 00:59:54 +08:00
2002-09-02 22:48:24 +08:00
if (r->http_version == 9)
2002-09-16 23:01:44 +08:00
return ngx_http_event_handler(r);
2002-08-30 00:59:54 +08:00
2002-09-13 22:47:42 +08:00
/* TODO: check too long URI - no space for header, compact buffer */
r->headers_in.headers = ngx_create_table(r->pool, 10);
2002-08-30 00:59:54 +08:00
r->state_handler = ngx_http_process_request_header;
2002-09-02 22:48:24 +08:00
ctx = r->connection->log->data;
ctx->action = "reading client request headers";
2002-08-30 00:59:54 +08:00
return NGX_OK;
}
2002-09-13 22:47:42 +08:00
if (r->header_in->last.mem >= r->header_in->end) {
rc == NGX_HTTP_PARSE_TOO_LONG_URI;
} else if (rc == NGX_AGAIN) {
return NGX_AGAIN;
}
2002-08-30 00:59:54 +08:00
ctx = r->connection->log->data;
2002-09-02 22:48:24 +08:00
r->connection->log->handler = NULL;
2002-09-13 22:47:42 +08:00
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
header_errors[rc - NGX_HTTP_PARSE_INVALID_METHOD],
ctx->client);
2002-08-30 00:59:54 +08:00
r->connection->log->handler = ngx_http_log_error;
2002-09-13 22:47:42 +08:00
return ngx_http_error(r, (rc == NGX_HTTP_PARSE_TOO_LONG_URI) ?
NGX_HTTP_REQUEST_URI_TOO_LARGE:
NGX_HTTP_BAD_REQUEST);
}
2002-09-13 22:47:42 +08:00
2002-08-30 00:59:54 +08:00
static int ngx_http_process_request_header(ngx_http_request_t *r)
{
2002-08-30 00:59:54 +08:00
int rc;
ngx_http_log_ctx_t *ctx;
2002-08-30 00:59:54 +08:00
for ( ;; ) {
rc = ngx_read_http_header_line(r);
2002-09-13 22:47:42 +08:00
/* TODO: check too long header, compact buffer */
2002-08-30 00:59:54 +08:00
if (rc == NGX_OK) {
2002-09-02 22:48:24 +08:00
if (ngx_http_process_request_header_line(r) == NGX_ERROR)
return ngx_http_error(r, NGX_HTTP_BAD_REQUEST);
2002-09-13 22:47:42 +08:00
} else if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
2002-09-02 22:48:24 +08:00
ngx_log_debug(r->connection->log, "HTTP header done");
2002-09-16 23:01:44 +08:00
return ngx_http_event_handler(r);
2002-08-30 00:59:54 +08:00
} else if (rc == NGX_AGAIN) {
return NGX_AGAIN;
2002-09-13 22:47:42 +08:00
} else if (rc == NGX_HTTP_PARSE_INVALID_HEADER) {
2002-08-30 00:59:54 +08:00
ctx = r->connection->log->data;
2002-09-02 22:48:24 +08:00
r->connection->log->handler = NULL;
2002-09-13 22:47:42 +08:00
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
2002-08-30 00:59:54 +08:00
"client %s sent invalid header", ctx->client);
r->connection->log->handler = ngx_http_log_error;
2002-09-02 22:48:24 +08:00
return ngx_http_error(r, NGX_HTTP_BAD_REQUEST);
2002-08-30 00:59:54 +08:00
}
}
2002-09-02 22:48:24 +08:00
}
2002-09-13 22:47:42 +08:00
2002-09-02 22:48:24 +08:00
static int ngx_http_process_request_header_line(ngx_http_request_t *r)
{
int i;
ngx_table_elt_t *h;
2002-12-03 23:45:38 +08:00
ngx_test_null(h, ngx_push_table(r->headers_in.headers), NGX_ERROR);
h->key.len = r->header_name_end - r->header_name_start;
ngx_test_null(h->key.data, ngx_palloc(r->pool, h->key.len + 1), NGX_ERROR);
ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1);
h->value.len = r->header_end - r->header_start;
ngx_test_null(h->value.data, ngx_palloc(r->pool, h->value.len + 1),
NGX_ERROR);
ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1);
for (i = 0; headers_in[i].len != 0; i++) {
if (headers_in[i].len == h->key.len) {
if (strcasecmp(headers_in[i].data, h->key.data) == 0) {
*((ngx_table_elt_t **)
((char *) &r->headers_in + headers_in[i].offset)) = h;
}
}
}
2002-09-02 22:48:24 +08:00
ngx_log_debug(r->connection->log, "HTTP header: '%s: %s'" _
h->key.data _ h->value.data);
2002-09-02 22:48:24 +08:00
return NGX_OK;
}
2002-09-13 22:47:42 +08:00
/* ******************** */
2002-09-02 22:48:24 +08:00
void ngx_http_discard_body(ngx_http_request_t *r)
{
ngx_log_debug(r->connection->log, "set discard body");
2002-08-30 00:59:54 +08:00
ngx_del_timer(r->connection->read);
2002-09-02 22:48:24 +08:00
if (r->client_content_length)
r->connection->read->event_handler = ngx_http_read_discarded_body;
}
2002-09-02 22:48:24 +08:00
static int ngx_http_read_discarded_body(ngx_event_t *ev)
2002-08-26 23:18:19 +08:00
{
2002-09-02 22:48:24 +08:00
size_t size;
ssize_t n;
ngx_connection_t *c;
ngx_http_request_t *r;
c = (ngx_connection_t *) ev->data;
r = (ngx_http_request_t *) c->data;
ngx_log_debug(ev->log, "http read discarded body");
if (ev->timedout)
return NGX_ERROR;
if (r->discarded_buffer == NULL)
ngx_test_null(r->discarded_buffer,
ngx_palloc(r->pool, r->server->discarded_buffer_size),
NGX_ERROR);
size = r->client_content_length;
if (size > r->server->discarded_buffer_size)
size = r->server->discarded_buffer_size;
n = ngx_event_recv(c, r->discarded_buffer, size);
2002-09-12 22:42:29 +08:00
if (n == NGX_ERROR)
return NGX_ERROR;
2002-09-02 22:48:24 +08:00
2002-09-12 22:42:29 +08:00
if (n == NGX_AGAIN)
return NGX_OK;
r->client_content_length -= n;
/* XXX: what if r->client_content_length == 0 ? */
return NGX_OK;
2002-09-02 22:48:24 +08:00
}
static int ngx_http_discarded_read(ngx_event_t *ev)
{
ssize_t n;
ngx_connection_t *c;
ngx_http_request_t *r;
c = (ngx_connection_t *) ev->data;
r = (ngx_http_request_t *) c->data;
ngx_log_debug(ev->log, "http discarded read");
if (ev->timedout)
return NGX_ERROR;
if (r->discarded_buffer == NULL)
ngx_test_null(r->discarded_buffer,
ngx_palloc(r->pool, r->server->discarded_buffer_size),
NGX_ERROR);
n = ngx_event_recv(c, r->discarded_buffer,
r->server->discarded_buffer_size);
return n;
2002-08-26 23:18:19 +08:00
}
2002-09-02 22:48:24 +08:00
2002-09-13 22:47:42 +08:00
/* ******************** */
2002-09-16 23:01:44 +08:00
static int ngx_http_event_handler(ngx_http_request_t *r)
2002-09-02 22:48:24 +08:00
{
2002-09-16 23:01:44 +08:00
int rc;
2002-09-07 18:14:25 +08:00
ngx_msec_t timeout;
2002-09-02 22:48:24 +08:00
ngx_log_debug(r->connection->log, "UA: '%s: %s'" _
r->headers_in.user_agent->key.data _
r->headers_in.user_agent->value.data);
2002-09-16 23:01:44 +08:00
rc = ngx_http_handler(r);
2002-09-02 22:48:24 +08:00
/* transfer not completed */
if (rc == NGX_AGAIN) {
#if (HAVE_CLEAR_EVENT)
if (ngx_add_event(r->connection->write, NGX_WRITE_EVENT,
NGX_CLEAR_EVENT) == NGX_ERROR) {
#else
if (ngx_add_event(r->connection->write, NGX_WRITE_EVENT,
NGX_ONESHOT_EVENT) == NGX_ERROR) {
2002-08-26 23:18:19 +08:00
#endif
2002-09-02 22:48:24 +08:00
return ngx_http_close_request(r);
}
2002-09-07 18:14:25 +08:00
if (r->connection->sent > 0) {
ngx_log_debug(r->connection->log, "sent: " QD_FMT _
r->connection->sent);
timeout = (ngx_msec_t) (r->connection->sent * 10);
ngx_log_debug(r->connection->log, "timeout: %d" _ timeout);
ngx_add_timer(r->connection->write, timeout);
} else {
ngx_add_timer(r->connection->write, 10000);
}
2002-09-02 22:48:24 +08:00
r->connection->write->event_handler = ngx_http_writer;
return rc;
}
if (rc == NGX_ERROR) {
/* log http request */
return ngx_http_close_request(r);
}
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
if (rc >= NGX_HTTP_SPECIAL_RESPONSE)
return ngx_http_special_response(r, rc);
/* rc == NGX_OK */
2002-09-12 22:42:29 +08:00
if (!r->keepalive) {
if (r->lingering_close) {
2002-09-16 23:01:44 +08:00
return ngx_http_set_lingering_close(r);
2002-09-12 22:42:29 +08:00
} else {
return ngx_http_close_request(r);
}
}
2002-09-16 23:01:44 +08:00
/* keepalive */
ngx_http_close_request(r);
r->connection->buffer->pos.mem = r->connection->buffer->last.mem
= r->connection->buffer->start;
r->connection->read->event_handler = ngx_http_keepalive_handler;
}
static int ngx_http_handler(ngx_http_request_t *r)
{
int rc;
ngx_del_timer(r->connection->read);
r->header_timeout = 0;
r->process_header = 0;
r->state_handler = NULL;
r->connection->unexpected_eof = 0;
r->lingering_close = 1;
r->connection->read->event_handler = ngx_http_block_read;
/* STUB: should find handler */
2002-09-27 23:05:29 +08:00
#if 1
2002-09-16 23:01:44 +08:00
r->filter = NGX_HTTP_FILTER_NEED_IN_MEMORY;
#endif
rc = ngx_http_set_default_handler(r);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE)
return ngx_http_special_response(r, rc);
rc = r->handler(r);
return rc;
2002-09-12 22:42:29 +08:00
}
2002-09-11 23:18:33 +08:00
int ngx_http_internal_redirect(ngx_http_request_t *r, char *uri)
{
ngx_log_debug(r->connection->log, "internal redirect: '%s'" _ uri);
r->uri = uri;
r->uri_start = uri;
r->uri_end = uri + strlen(uri);
return ngx_http_handler(r);
}
2002-09-02 22:48:24 +08:00
static int ngx_http_set_default_handler(ngx_http_request_t *r)
2002-08-16 01:20:26 +08:00
{
2002-08-20 22:48:28 +08:00
int err, rc;
2002-08-16 23:27:03 +08:00
char *name, *loc, *file;
2002-12-03 23:45:38 +08:00
#if 1
/* STUB */
r->handler = ngx_http_proxy_handler;
return NGX_OK;
#endif
/* NO NEEDED
2002-08-20 22:48:28 +08:00
ngx_test_null(r->headers_out,
ngx_pcalloc(r->pool, sizeof(ngx_http_headers_out_t)),
2002-09-02 22:48:24 +08:00
NGX_HTTP_INTERNAL_SERVER_ERROR);
*/
2002-08-20 22:48:28 +08:00
2002-08-16 23:27:03 +08:00
if (*(r->uri_end - 1) == '/') {
2002-09-02 22:48:24 +08:00
r->handler = ngx_http_index_handler;
2002-08-16 23:27:03 +08:00
return NGX_OK;
}
/* 20 bytes is spare space for some index name, i.e. index.html */
r->filename_len = r->uri_end - r->uri_start + r->server->doc_root_len + 20;
ngx_test_null(r->filename,
ngx_palloc(r->pool, r->filename_len),
2002-09-02 22:48:24 +08:00
NGX_HTTP_INTERNAL_SERVER_ERROR);
2002-08-16 23:27:03 +08:00
r->location = ngx_cpystrn(r->filename, r->server->doc_root,
r->server->doc_root_len);
file = ngx_cpystrn(r->location, r->uri_start,
r->uri_end - r->uri_start + 1);
ngx_log_debug(r->connection->log, "HTTP filename: '%s'" _ r->filename);
2002-09-02 22:48:24 +08:00
if (ngx_file_type(r->filename, &r->fileinfo) == -1) {
2002-08-16 23:27:03 +08:00
err = ngx_errno;
2002-08-20 22:48:28 +08:00
ngx_log_error(NGX_LOG_ERR, r->connection->log, err,
ngx_file_type_n " %s failed", r->filename);
2002-08-16 23:27:03 +08:00
if (err == NGX_ENOENT)
2002-09-02 22:48:24 +08:00
return NGX_HTTP_NOT_FOUND;
2002-08-16 23:27:03 +08:00
else
2002-09-02 22:48:24 +08:00
return NGX_HTTP_INTERNAL_SERVER_ERROR;
2002-08-16 23:27:03 +08:00
}
2002-09-02 22:48:24 +08:00
if (ngx_is_dir(r->fileinfo)) {
2002-08-20 22:48:28 +08:00
ngx_log_debug(r->connection->log, "HTTP DIR: '%s'" _ r->filename);
2002-08-16 23:27:03 +08:00
*file++ = '/';
*file = '\0';
r->headers_out.location = r->location;
2002-09-02 22:48:24 +08:00
return NGX_HTTP_MOVED_PERMANENTLY;
2002-08-16 23:27:03 +08:00
}
2002-09-02 22:48:24 +08:00
r->handler = ngx_http_static_handler;
2002-08-20 22:48:28 +08:00
2002-08-16 23:27:03 +08:00
return NGX_OK;
}
2002-08-26 23:18:19 +08:00
2002-09-13 22:47:42 +08:00
static int ngx_http_block_read(ngx_event_t *ev)
{
ngx_log_debug(ev->log, "http read blocked");
ev->blocked = 1;
2002-09-16 23:01:44 +08:00
return ngx_del_event(ev, NGX_READ_EVENT);
2002-09-13 22:47:42 +08:00
}
2002-09-02 22:48:24 +08:00
static int ngx_http_writer(ngx_event_t *ev)
2002-08-26 23:18:19 +08:00
{
2002-09-02 22:48:24 +08:00
int rc;
ngx_msec_t timeout;
ngx_connection_t *c;
ngx_http_request_t *r;
ngx_http_core_loc_conf_t *conf;
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
c = (ngx_connection_t *) ev->data;
r = (ngx_http_request_t *) c->data;
2002-08-26 23:18:19 +08:00
2002-09-07 18:14:25 +08:00
c->sent = 0;
2002-09-02 22:48:24 +08:00
rc = ngx_http_output_filter(r, NULL);
2002-08-26 23:18:19 +08:00
2002-09-16 23:01:44 +08:00
ngx_log_debug(ev->log, "output filter in writer: %d" _ rc);
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
if (rc == NGX_AGAIN) {
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
if (c->sent > 0) {
conf = (ngx_http_core_loc_conf_t *)
2002-09-16 23:01:44 +08:00
ngx_get_module_loc_conf(r->main ? r->main : r,
ngx_http_core_module);
timeout = (ngx_msec_t) (c->sent * conf->send_timeout);
2002-09-02 22:48:24 +08:00
ngx_log_debug(ev->log, "sent: " QD_FMT _ c->sent);
ngx_log_debug(ev->log, "timeout: %d" _ timeout);
2002-09-16 23:01:44 +08:00
2002-09-02 22:48:24 +08:00
ngx_del_timer(ev);
ngx_add_timer(ev, timeout);
}
2002-08-26 23:18:19 +08:00
2002-09-02 22:48:24 +08:00
if (ev->oneshot)
if (ngx_add_event(r->connection->write, NGX_WRITE_EVENT,
NGX_ONESHOT_EVENT) == NGX_ERROR) {
return ngx_http_close_request(r);
}
2002-08-26 23:18:19 +08:00
return rc;
2002-09-02 22:48:24 +08:00
}
2002-08-26 23:18:19 +08:00
if (rc == NGX_ERROR)
return rc;
/* rc == NGX_OK */
2002-09-16 23:01:44 +08:00
ngx_log_debug(ev->log, "http writer done");
2002-08-26 23:18:19 +08:00
2002-09-12 22:42:29 +08:00
if (!r->keepalive) {
if (r->lingering_close) {
2002-09-16 23:01:44 +08:00
ngx_http_set_lingering_close(r);
2002-09-12 22:42:29 +08:00
} else {
return ngx_http_close_request(r);
}
}
2002-08-26 23:18:19 +08:00
2002-09-12 22:42:29 +08:00
/* keepalive */
2002-09-16 23:01:44 +08:00
2002-09-12 22:42:29 +08:00
ngx_http_close_request(r);
2002-09-16 23:01:44 +08:00
c->buffer->pos.mem = c->buffer->last.mem = c->buffer->start;
c->read->event_handler = ngx_http_keepalive_handler;
}
static int ngx_http_set_lingering_close(ngx_http_request_t *r)
{
r->lingering_time = ngx_time() + r->server->lingering_time;
r->connection->read->event_handler = ngx_http_lingering_close;
ngx_del_timer(r->connection->read);
ngx_add_timer(r->connection->read, r->server->lingering_timeout);
#if (HAVE_CLEAR_EVENT)
if (ngx_add_event(r->connection->read, NGX_READ_EVENT,
NGX_CLEAR_EVENT) == NGX_ERROR) {
#else
if (ngx_add_event(r->connection->read, NGX_READ_EVENT,
NGX_ONESHOT_EVENT) == NGX_ERROR) {
#endif
return ngx_http_close_request(r);
}
if (ngx_shutdown_socket(r->connection->fd, NGX_WRITE_SHUTDOWN) == NGX_ERROR)
{
ngx_log_error(NGX_LOG_ERR, r->connection->log, ngx_socket_errno,
ngx_shutdown_socket_n " failed");
return ngx_http_close_request(r);
}
return NGX_OK;
2002-08-26 23:18:19 +08:00
}
static int ngx_http_keepalive_handler(ngx_event_t *ev)
{
2002-09-16 23:01:44 +08:00
ssize_t n;
2002-08-26 23:18:19 +08:00
ngx_connection_t *c;
ngx_http_log_ctx_t *ctx;
2002-09-16 23:01:44 +08:00
c = (ngx_connection_t *) ev->data;
2002-09-13 22:47:42 +08:00
ngx_log_debug(ev->log, "http keepalive");
if (ev->timedout)
return NGX_DONE;
2002-09-16 23:01:44 +08:00
n = ngx_event_recv(c, c->buffer->last.mem,
c->buffer->end - c->buffer->last.mem);
2002-08-26 23:18:19 +08:00
2002-09-16 23:01:44 +08:00
if (n == NGX_AGAIN || n == NGX_ERROR)
return n;
2002-08-26 23:18:19 +08:00
2002-09-16 23:01:44 +08:00
ctx = (ngx_http_log_ctx_t *) ev->log->data;
ev->log->handler = NULL;
if (n == 0) {
ngx_log_error(NGX_LOG_INFO, ev->log, 0,
"client %s closed keepalive connection", ctx->client);
return NGX_DONE;
}
c->buffer->last.mem += n;
ev->log->handler = ngx_http_log_error;
2002-08-26 23:18:19 +08:00
ctx->action = "reading client request line";
return ngx_http_init_request(ev);
}
2002-09-13 22:47:42 +08:00
static int ngx_http_lingering_close(ngx_event_t *ev)
{
ssize_t n;
ngx_msec_t timer;
ngx_connection_t *c;
ngx_http_request_t *r;
c = (ngx_connection_t *) ev->data;
r = (ngx_http_request_t *) c->data;
ngx_log_debug(ev->log, "http lingering close");
if (ev->timedout)
return NGX_DONE;
timer = r->lingering_time - ngx_time();
if (timer <= 0)
return NGX_DONE;
2002-09-16 23:01:44 +08:00
if (r->discarded_buffer == NULL) {
if (r->header_in->end - r->header_in->last.mem
>= r->server->discarded_buffer_size) {
r->discarded_buffer = r->header_in->last.mem;
} else {
ngx_test_null(r->discarded_buffer,
ngx_palloc(c->pool, r->server->discarded_buffer_size),
NGX_ERROR);
}
}
2002-09-13 22:47:42 +08:00
n = ngx_event_recv(c, r->discarded_buffer,
r->server->discarded_buffer_size);
if (n == NGX_ERROR)
return NGX_ERROR;
if (n == 0)
return NGX_DONE;
2002-09-16 23:01:44 +08:00
timer *= 1000;
if (timer > r->server->lingering_timeout)
timer = r->server->lingering_timeout;
2002-09-13 22:47:42 +08:00
ngx_del_timer(ev);
2002-09-16 23:01:44 +08:00
ngx_add_timer(ev, timer);
2002-09-13 22:47:42 +08:00
return NGX_OK;
}
2002-08-20 22:48:28 +08:00
2002-09-02 22:48:24 +08:00
static int ngx_http_special_response(ngx_http_request_t *r, int error)
2002-08-16 23:27:03 +08:00
{
2002-09-02 22:48:24 +08:00
return ngx_http_error(r, error);
2002-08-16 23:27:03 +08:00
}
2002-09-16 23:01:44 +08:00
2002-08-16 23:27:03 +08:00
static int ngx_http_redirect(ngx_http_request_t *r, int redirect)
{
/* STUB */
2002-09-02 22:48:24 +08:00
/* log request */
return ngx_http_close_request(r);
2002-08-16 23:27:03 +08:00
}
2002-09-16 23:01:44 +08:00
2002-08-16 23:27:03 +08:00
static int ngx_http_error(ngx_http_request_t *r, int error)
{
/* STUB */
2002-09-02 22:48:24 +08:00
ngx_log_debug(r->connection->log, "http error: %d" _ error);
/* log request */
return ngx_http_close_request(r);
2002-08-16 01:20:26 +08:00
}
#if 0
static int ngx_process_http_request(ngx_http_request_t *r)
{
int fd;
struct stat sb;
ngx_http_header_out_t *header_out;
ngx_chunk_t *header, *ch;
int index = (*(r->uri_end - 1) == '/') ? sizeof(NGX_INDEX) : 1;
char *name = ngx_palloc(r->pool,
r->uri_end - r->uri_start + strlen(ngx_root) + index);
strcpy(name, ngx_root);
strcat(name, r->uri_start);
if (*(r->uri_end - 1) == '/')
strcat(name, NGX_INDEX);
ngx_log_debug(r->connection->log, "HTTP URI: '%s'", name);
if ((fd = open(name, O_RDONLY)) == -1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, errno,
"open %s failed", name);
return -1;
}
if (fstat(fd, &sb) == -1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, errno,
"fstat %s failed", name);
return -1;
}
header_out = ngx_palloc(r->pool, sizeof(ngx_http_header_out_t));
header_out->status = NGX_HTTP_OK;
header_out->content_length = sb.st_size;
header_out->last_modified = sb.st_mtime;
header_out->content_type = "text/html";
header_out->charset = "koi8-r";
header_out->date = time(NULL);
header_out->connection = NGX_HTTP_CONN_CLOSE;
/*
header_out->connection = NGX_HTTP_CONN_KEEP_ALIVE;
r->connection->read->event_handler = ngx_http_init_request;
*/
header = ngx_http_header(r, header_out);
ch = ngx_palloc(r->pool, sizeof(ngx_chunk_t));
ch->ident = fd;
ch->offset = 0;
ch->size = sb.st_size;
ch->next = NULL;
header->next = ch;
ngx_event_write(r->connection, header);
return 0;
}
2002-08-16 01:20:26 +08:00
#endif
2002-08-30 00:59:54 +08:00
static int ngx_http_close_request(ngx_http_request_t *r)
{
2002-09-12 22:42:29 +08:00
/*
if (r->logging)
ngx_http_log_request(r);
*/
2002-08-30 00:59:54 +08:00
ngx_destroy_pool(r->pool);
2002-08-30 00:59:54 +08:00
ngx_log_debug(r->connection->log, "http close");
2002-09-02 22:48:24 +08:00
ngx_del_timer(r->connection->read);
ngx_del_timer(r->connection->write);
2002-09-12 22:42:29 +08:00
return NGX_DONE;
2002-08-26 23:18:19 +08:00
}
2002-10-05 01:58:04 +08:00
static int ngx_http_close_connection(ngx_event_t *ev)
{
int i, len;
char **requests, *requests_line, *prev, *new;
ngx_connection_t *c = (ngx_connection_t *) ev->data;
if (c->requests->nelts > 1) {
len = c->requests_len + c->requests->nelts * 2 - 1;
ngx_test_null(requests_line, ngx_palloc(c->pool, len),
ngx_event_close_connection(ev));
requests = (char **) c->requests->elts;
prev = requests_line;
new = ngx_cpystrn(prev, requests[0], len);
len -= new - prev;
prev = new;
for (i = 1; i < c->requests->nelts; i++) {
new = ngx_cpystrn(prev, ", ", len);
new = ngx_cpystrn(new, requests[i], len);
len -= new - prev;
prev = new;
}
} else {
requests_line = * (char **) c->requests->elts;
}
ngx_log_error(NGX_LOG_INFO, c->log, 0,
"REQUESTS: %d, '%s'", c->requests->nelts, requests_line);
return ngx_event_close_connection(ev);
}
2002-08-26 23:18:19 +08:00
static size_t ngx_http_log_error(void *data, char *buf, size_t len)
{
ngx_http_log_ctx_t *ctx = (ngx_http_log_ctx_t *) data;
2002-09-02 22:48:24 +08:00
2002-08-26 23:18:19 +08:00
if (ctx->url)
return ngx_snprintf(buf, len, " while %s, client: %s, URL: %s",
ctx->action, ctx->client, ctx->url);
else
return ngx_snprintf(buf, len, " while %s, client: %s",
ctx->action, ctx->client);
}