nginx-0.1.29-RELEASE import *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; the bug had appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.

/*
 * Copyright (C) Igor Sysoev
 */


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


static void * ngx_libc_cdecl ngx_regex_malloc(size_t size);
static void ngx_libc_cdecl ngx_regex_free(void *p);


static ngx_pool_t  *ngx_pcre_pool;


void
ngx_regex_init(void)
{
    pcre_malloc = ngx_regex_malloc;
    pcre_free = ngx_regex_free;
}


ngx_regex_t *
ngx_regex_compile(ngx_str_t *pattern, ngx_int_t options, ngx_pool_t *pool,
    ngx_str_t *err)
{
    int              erroff;
    const char      *errstr;
    ngx_regex_t     *re;
#if (NGX_THREADS)
    ngx_core_tls_t  *tls;

#if (NGX_SUPPRESS_WARN)
    tls = NULL;
#endif

    if (ngx_threaded) {
        tls = ngx_thread_get_tls(ngx_core_tls_key);
        tls->pool = pool;
    } else {
        ngx_pcre_pool = pool;
    }

#else

    ngx_pcre_pool = pool;

#endif

    re = pcre_compile((const char *) pattern->data, (int) options,
                      &errstr, &erroff, NULL);

    if (re == NULL) {
       if ((size_t) erroff == pattern->len) {
           ngx_snprintf(err->data, err->len - 1,
                        "pcre_compile() failed: %s in \"%s\"%Z",
                        errstr, pattern->data);
        } else {
           ngx_snprintf(err->data, err->len - 1,
                        "pcre_compile() failed: %s in \"%s\" at \"%s\"%Z",
                        errstr, pattern->data, pattern->data + erroff);
        }
    }

    /* ensure that there is no current pool */

#if (NGX_THREADS)
    if (ngx_threaded) {
        tls->pool = NULL;
    } else {
        ngx_pcre_pool = NULL;
    }
#else
    ngx_pcre_pool = NULL;
#endif

    return re;
}


ngx_int_t
ngx_regex_capture_count(ngx_regex_t *re)
{
    int  rc, n;

    n = 0;

    rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n);

    if (rc < 0) {
        return (ngx_int_t) rc;
    }

    return (ngx_int_t) n;
}


ngx_int_t
ngx_regex_exec(ngx_regex_t *re, ngx_str_t *s, int *captures, ngx_int_t size)
{
    int  rc;

    rc = pcre_exec(re, NULL, (const char *) s->data, s->len, 0, 0,
                   captures, size);

    if (rc == -1) {
        return NGX_REGEX_NO_MATCHED;
    }

    return rc;
}


static void * ngx_libc_cdecl
ngx_regex_malloc(size_t size)
{
    ngx_pool_t      *pool;
#if (NGX_THREADS)
    ngx_core_tls_t  *tls;

    if (ngx_threaded) {
        tls = ngx_thread_get_tls(ngx_core_tls_key);
        pool = tls->pool;
    } else {
        pool = ngx_pcre_pool;
    }
#else
    pool = ngx_pcre_pool;
#endif

    if (pool) {
        return ngx_palloc(pool, size);
    }

    return NULL;
}


static void ngx_libc_cdecl
ngx_regex_free(void *p)
{
    return;
}