view src/mysql/ngx_mysql.h @ 4147:7f64de1cc2c0

Fix for double content when return is used in error_page handler. Test case: location / { error_page 405 /nope; return 405; } location /nope { return 200; } This is expected to return 405 with empty body, but in 0.8.42+ will return builtin 405 error page as well (though not counted in Content-Length, thus breaking protocol). Fix is to use status provided by rewrite script execution in case it's less than NGX_HTTP_BAD_REQUEST even if r->error_status set. This check is in line with one in ngx_http_script_return_code(). Note that this patch also changes behaviour for "return 302 ..." and "rewrite ... redirect" used as error handler. E.g. location / { error_page 405 /redirect; return 405; } location /redirect { rewrite ^ http://example.com/; } will actually return redirect to "http://example.com/" instead of builtin 405 error page with meaningless Location header. This looks like correct change and it's in line with what happens on e.g. directory redirects in error handlers.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 27 Sep 2011 11:11:30 +0000
parents 7cbef16c71a1
children d620f497c50f
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/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_MYSQL_H_INCLUDED_
#define _NGX_MYSQL_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_event_connect.h>


typedef struct ngx_mysql_s  ngx_mysql_t;

typedef void (*ngx_mysql_handler_pt)(ngx_mysql_t *m);


struct ngx_mysql_s {
    ngx_peer_connection_t   peer;

    ngx_buf_t              *buf;
    ngx_pool_t             *pool;

    ngx_str_t              *login;
    ngx_str_t              *passwd;
    ngx_str_t              *database;

    ngx_str_t               query;

    ngx_uint_t              pktn;

    ngx_mysql_handler_pt    handler;
    void                   *data;
    ngx_int_t               state;

};


#define NGX_MYSQL_CMDPKT_LEN  5


#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED && 0)

#define ngx_m16toh(n)      (*(uint32_t *) n & 0x0000ffff)
#define ngx_m24toh(n)      (*(uint32_t *) n & 0x00ffffff)
#define ngx_m32toh(n)      *(uint32_t *) n

#define ngx_htom16(n, m)   *(uint16_t *) n = (uint16_t) ((m) & 0xffff)

#define ngx_htom24(n, m)   (n)[0] = (u_char) ((m) & 0xff);                   \
                           (n)[1] = (u_char) (((m) >> 8) & 0xff);            \
                           (n)[2] = (u_char) (((m) >> 16) & 0xff)

#define ngx_htom32(n, m)   *(uint32_t *) (n) = (m)

#else

#define ngx_m16toh(n)      (n[0] | n[1] << 8)
#define ngx_m24toh(n)      (n[0] | n[1] << 8 | n[2] << 16)
#define ngx_m32toh(n)      (n[0] | n[1] << 8 | n[2] << 16 | n[3] << 24)

#define ngx_htom16(n, m)   (n)[0] = (u_char) (m); (n)[1] = (u_char) ((m) >> 8)

#define ngx_htom24(n, m)   (n)[0] = (u_char) ((m) & 0xff);                   \
                           (n)[1] = (u_char) (((m) >> 8) & 0xff);            \
                           (n)[2] = (u_char) (((m) >> 16) & 0xff)

#define ngx_htom32(n, m)   (n)[0] = (u_char) ((m) & 0xff);                   \
                           (n)[1] = (u_char) (((m) >> 8) & 0xff);            \
                           (n)[2] = (u_char) (((m) >> 16) & 0xff);           \
                           (n)[3] = (u_char) (((m) >> 24) & 0xff)

#endif


ngx_int_t ngx_mysql_connect(ngx_mysql_t *m);
ngx_int_t ngx_mysql_query(ngx_mysql_t *m);


#endif /* _NGX_MYSQL_H_INCLUDED_ */