root/sapi/nsapi/nsapi.c

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DEFINITIONS

This source file includes following definitions.
  1. nsapi_free
  2. php_nsapi_init_dynamic_symbols
  3. php_nsapi_init_globals
  4. PHP_MINIT_FUNCTION
  5. PHP_MSHUTDOWN_FUNCTION
  6. PHP_MINFO_FUNCTION
  7. PHP_FUNCTION
  8. PHP_FUNCTION
  9. PHP_FUNCTION
  10. sapi_nsapi_ub_write
  11. sapi_nsapi_flush
  12. php_nsapi_remove_header
  13. sapi_nsapi_header_handler
  14. sapi_nsapi_send_headers
  15. sapi_nsapi_read_post
  16. sapi_nsapi_read_cookies
  17. sapi_nsapi_register_server_variables
  18. nsapi_log_message
  19. sapi_nsapi_get_request_time
  20. php_nsapi_startup
  21. sapi_nsapi_get_stat
  22. nsapi_php_ini_entries
  23. php5_close
  24. php5_init
  25. php5_execute
  26. php5_auth_trans

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author: Jayakumar Muthukumarasamy <jk@kasenna.com>                   |
   |         Uwe Schindler <uwe@thetaphi.de>                              |
   +----------------------------------------------------------------------+
*/

/* $Id: 6f7773f879351db6ba6946964cabeac2a969af1b $ */

/*
 * PHP includes
 */
#define NSAPI 1

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_variables.h"
#include "ext/standard/info.h"
#include "php_ini.h"
#include "php_globals.h"
#include "SAPI.h"
#include "php_main.h"
#include "php_version.h"
#include "TSRM.h"
#include "ext/standard/php_standard.h"
#include <sys/types.h>
#include <sys/stat.h>

#ifndef RTLD_DEFAULT
#define RTLD_DEFAULT NULL
#endif

/*
 * If neither XP_UNIX not XP_WIN32 is defined use PHP_WIN32
 */
#if !defined(XP_UNIX) && !defined(XP_WIN32)
#ifdef PHP_WIN32
#define XP_WIN32
#else
#define XP_UNIX
#endif
#endif

/*
 * The manual define of HPUX is to fix bug #46020, nsapi.h needs this to detect HPUX
 */
#ifdef __hpux
#define HPUX
#endif
 
/*
 * NSAPI includes
 */
#include "nsapi.h"

/* fix for gcc4 visibility issue */
#ifndef PHP_WIN32
# undef NSAPI_PUBLIC
# define NSAPI_PUBLIC PHPAPI
#endif

#define NSLS_D          struct nsapi_request_context *request_context
#define NSLS_DC         , NSLS_D
#define NSLS_C          request_context
#define NSLS_CC         , NSLS_C
#define NSG(v)          (request_context->v)

/*
 * ZTS needs to be defined for NSAPI to work
 */
#if !defined(ZTS)
#error "NSAPI module needs ZTS to be defined"
#endif

/*
 * Structure to encapsulate the NSAPI request in SAPI
 */
typedef struct nsapi_request_context {
        pblock  *pb;
        Session *sn;
        Request *rq;
        int     read_post_bytes;
        char *path_info;
        int fixed_script; /* 0 if script is from URI, 1 if script is from "script" parameter */
        short http_error; /* 0 in normal mode; for errors the HTTP error code */
} nsapi_request_context;

/*
 * Mappings between NSAPI names and environment variables. This
 * mapping was obtained from the sample programs at the iplanet
 * website.
 */
typedef struct nsapi_equiv {
        const char *env_var;
        const char *nsapi_eq;
} nsapi_equiv;

static nsapi_equiv nsapi_reqpb[] = {
        { "QUERY_STRING",               "query" },
        { "REQUEST_LINE",               "clf-request" },
        { "REQUEST_METHOD",             "method" },
        { "PHP_SELF",                   "uri" },
        { "SERVER_PROTOCOL",    "protocol" }
};
static size_t nsapi_reqpb_size = sizeof(nsapi_reqpb)/sizeof(nsapi_reqpb[0]);

static nsapi_equiv nsapi_vars[] = {
        { "AUTH_TYPE",                  "auth-type" },
        { "CLIENT_CERT",                "auth-cert" },
        { "REMOTE_USER",                "auth-user" }
};
static size_t nsapi_vars_size = sizeof(nsapi_vars)/sizeof(nsapi_vars[0]);

static nsapi_equiv nsapi_client[] = {
        { "HTTPS_KEYSIZE",              "keysize" },
        { "HTTPS_SECRETSIZE",   "secret-keysize" },
        { "REMOTE_ADDR",                "ip" },
        { "REMOTE_HOST",                "ip" }
};
static size_t nsapi_client_size = sizeof(nsapi_client)/sizeof(nsapi_client[0]);

/* this parameters to "Service"/"Error" are NSAPI ones which should not be php.ini keys and are excluded */
static char *nsapi_exclude_from_ini_entries[] = { "fn", "type", "method", "directive", "code", "reason", "script", "bucket", NULL };

static void nsapi_free(void *addr)
{
        if (addr != NULL) {
                FREE(addr);
        }
}


/*******************/
/* PHP module part */
/*******************/

PHP_MINIT_FUNCTION(nsapi);
PHP_MSHUTDOWN_FUNCTION(nsapi);
PHP_RINIT_FUNCTION(nsapi);
PHP_RSHUTDOWN_FUNCTION(nsapi);
PHP_MINFO_FUNCTION(nsapi);

PHP_FUNCTION(nsapi_virtual);
PHP_FUNCTION(nsapi_request_headers);
PHP_FUNCTION(nsapi_response_headers);

ZEND_BEGIN_MODULE_GLOBALS(nsapi)
        long read_timeout;
ZEND_END_MODULE_GLOBALS(nsapi)

ZEND_DECLARE_MODULE_GLOBALS(nsapi)

#define NSAPI_G(v) TSRMG(nsapi_globals_id, zend_nsapi_globals *, v)


/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_nsapi_virtual, 0, 0, 1)
        ZEND_ARG_INFO(0, uri)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_nsapi_request_headers, 0)
ZEND_END_ARG_INFO()

ZEND_BEGIN_ARG_INFO(arginfo_nsapi_response_headers, 0)
ZEND_END_ARG_INFO()
/* }}} */

/* {{{ nsapi_functions[]
 *
 * Every user visible function must have an entry in nsapi_functions[].
 */
const zend_function_entry nsapi_functions[] = {
        PHP_FE(nsapi_virtual,   arginfo_nsapi_virtual)                                          /* Make subrequest */
        PHP_FALIAS(virtual, nsapi_virtual, arginfo_nsapi_virtual)                       /* compatibility */
        PHP_FE(nsapi_request_headers, arginfo_nsapi_request_headers)            /* get request headers */
        PHP_FALIAS(getallheaders, nsapi_request_headers, arginfo_nsapi_request_headers) /* compatibility */
        PHP_FALIAS(apache_request_headers, nsapi_request_headers, arginfo_nsapi_request_headers)        /* compatibility */
        PHP_FE(nsapi_response_headers, arginfo_nsapi_response_headers)          /* get response headers */
        PHP_FALIAS(apache_response_headers, nsapi_response_headers, arginfo_nsapi_response_headers)     /* compatibility */
        {NULL, NULL, NULL}
};
/* }}} */

/* {{{ nsapi_module_entry
 */
zend_module_entry nsapi_module_entry = {
        STANDARD_MODULE_HEADER,
        "nsapi",
        nsapi_functions,
        PHP_MINIT(nsapi),
        PHP_MSHUTDOWN(nsapi),
        NULL,
        NULL,
        PHP_MINFO(nsapi),
        NO_VERSION_YET,
        STANDARD_MODULE_PROPERTIES
};
/* }}} */

/* {{{ PHP_INI
 */
PHP_INI_BEGIN()
    STD_PHP_INI_ENTRY("nsapi.read_timeout", "60", PHP_INI_ALL, OnUpdateLong, read_timeout, zend_nsapi_globals, nsapi_globals)
PHP_INI_END()
/* }}} */

/* newer servers hide this functions from the programmer so redefine the functions dynamically
   thanks to Chris Elving from Sun for the function declarations */
typedef int (*nsapi_servact_prototype)(Session *sn, Request *rq);
nsapi_servact_prototype nsapi_servact_uri2path = NULL;
nsapi_servact_prototype nsapi_servact_pathchecks = NULL;
nsapi_servact_prototype nsapi_servact_fileinfo = NULL;
nsapi_servact_prototype nsapi_servact_service = NULL;

#ifdef PHP_WIN32
/* The following dll-names for nsapi are in use at this time. The undocumented
 * servact_* functions are always in the newest one, older ones are supported by
 * the server only by wrapping the function table nothing else. So choose
 * the newest one found in process space for dynamic linking */
static char *nsapi_dlls[] = { "ns-httpd40.dll", "ns-httpd36.dll", "ns-httpd35.dll", "ns-httpd30.dll", NULL };
/* if user specifies an other dll name by server_lib parameter 
 * it is placed in the following variable and only this DLL is
 * checked for the servact_* functions */
char *nsapi_dll = NULL;
#endif

/* {{{ php_nsapi_init_dynamic_symbols
 */
static void php_nsapi_init_dynamic_symbols(void)
{
        /* find address of internal NSAPI functions */
#ifdef PHP_WIN32
        register int i;
        DL_HANDLE module = NULL;
        if (nsapi_dll) {
                /* try user specified server_lib */
                module = GetModuleHandle(nsapi_dll);
                if (!module) {
                        log_error(LOG_WARN, "php5_init", NULL, NULL, "Cannot find DLL specified by server_lib parameter: %s", nsapi_dll);
                }
        } else {
                /* find a LOADED dll module from nsapi_dlls */
                for (i=0; nsapi_dlls[i]; i++) {
                        if (module = GetModuleHandle(nsapi_dlls[i])) {
                                break;
                        }
                }
        }
        if (!module) return;
#else
        DL_HANDLE module = RTLD_DEFAULT;
#endif
        nsapi_servact_uri2path = (nsapi_servact_prototype)DL_FETCH_SYMBOL(module, "INTservact_uri2path");
        nsapi_servact_pathchecks = (nsapi_servact_prototype)DL_FETCH_SYMBOL(module, "INTservact_pathchecks");
        nsapi_servact_fileinfo = (nsapi_servact_prototype)DL_FETCH_SYMBOL(module, "INTservact_fileinfo");
        nsapi_servact_service = (nsapi_servact_prototype)DL_FETCH_SYMBOL(module, "INTservact_service");
        if (!(nsapi_servact_uri2path && nsapi_servact_pathchecks && nsapi_servact_fileinfo && nsapi_servact_service)) {
                /* not found - could be cause they are undocumented */
                nsapi_servact_uri2path = NULL;
                nsapi_servact_pathchecks = NULL;
                nsapi_servact_fileinfo = NULL;
                nsapi_servact_service = NULL;
        }
}
/* }}} */

/* {{{ php_nsapi_init_globals
 */
static void php_nsapi_init_globals(zend_nsapi_globals *nsapi_globals)
{
        nsapi_globals->read_timeout = 60;
}
/* }}} */

/* {{{ PHP_MINIT_FUNCTION
 */
PHP_MINIT_FUNCTION(nsapi)
{
        php_nsapi_init_dynamic_symbols();
        ZEND_INIT_MODULE_GLOBALS(nsapi, php_nsapi_init_globals, NULL);
        REGISTER_INI_ENTRIES();
        return SUCCESS;
}
/* }}} */

/* {{{ PHP_MSHUTDOWN_FUNCTION
 */
PHP_MSHUTDOWN_FUNCTION(nsapi)
{
        UNREGISTER_INI_ENTRIES();
        return SUCCESS;
}
/* }}} */

/* {{{ PHP_MINFO_FUNCTION
 */
PHP_MINFO_FUNCTION(nsapi)
{
        php_info_print_table_start();
        php_info_print_table_row(2, "NSAPI Module Revision", "$Id: 6f7773f879351db6ba6946964cabeac2a969af1b $");
        php_info_print_table_row(2, "Server Software", system_version());
        php_info_print_table_row(2, "Sub-requests with nsapi_virtual()",
         (nsapi_servact_service)?((zend_ini_long("zlib.output_compression", sizeof("zlib.output_compression"), 0))?"not supported with zlib.output_compression":"enabled"):"not supported on this platform" );
        php_info_print_table_end();

        DISPLAY_INI_ENTRIES();
}
/* }}} */

/* {{{ proto bool nsapi_virtual(string uri)
   Perform an NSAPI sub-request */
/* This function is equivalent to <!--#include virtual...-->
 * in SSI. It does an NSAPI sub-request. It is useful
 * for including CGI scripts or .shtml files, or anything else
 * that you'd parse through webserver.
 */
PHP_FUNCTION(nsapi_virtual)
{
        int uri_len,rv;
        char *uri,*value;
        Request *rq;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &uri, &uri_len) == FAILURE) {
                return;
        }

        if (!nsapi_servact_service) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to include uri '%s' - Sub-requests not supported on this platform", uri);
                RETURN_FALSE;
        } else if (zend_ini_long("zlib.output_compression", sizeof("zlib.output_compression"), 0)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to include uri '%s' - Sub-requests do not work with zlib.output_compression", uri);
                RETURN_FALSE;
        } else {
                php_output_end_all(TSRMLS_C);
                php_header(TSRMLS_C);

                /* do the sub-request */
                /* thanks to Chris Elving from Sun for this code sniplet */
                if ((rq = request_restart_internal(uri, NULL)) == NULL) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to include uri '%s' - Internal request creation failed", uri);
                        RETURN_FALSE;
                }

                /* insert host of current request to get page from same vhost */
                param_free(pblock_remove("host", rq->headers));
                if (value = pblock_findval("host", rc->rq->headers)) {
                        pblock_nvinsert("host", value, rq->headers);
                }

                /* go through the normal request stages as given in obj.conf,
                   but leave out the logging/error section */
                do {
                        rv = (*nsapi_servact_uri2path)(rc->sn, rq);
                        if (rv != REQ_PROCEED) {
                                continue;
                        }

                        rv = (*nsapi_servact_pathchecks)(rc->sn, rq);
                        if (rv != REQ_PROCEED) {
                                continue;
                        }

                        rv = (*nsapi_servact_fileinfo)(rc->sn, rq);
                        if (rv != REQ_PROCEED) {
                                continue;
                        }

                        rv = (*nsapi_servact_service)(rc->sn, rq);
                } while (rv == REQ_RESTART);

                if (rq->status_num != 200) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to include uri '%s' - HTTP status code %d during subrequest", uri, rq->status_num);
                        request_free(rq);
                        RETURN_FALSE;
                }

                request_free(rq);

                RETURN_TRUE;
        }
}
/* }}} */

/* {{{ proto array nsapi_request_headers(void)
   Get all headers from the request */
PHP_FUNCTION(nsapi_request_headers)
{
        register int i;
        struct pb_entry *entry;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        if (zend_parse_parameters_none() == FAILURE) {
                return;
        }
        
        array_init(return_value);

        for (i=0; i < rc->rq->headers->hsize; i++) {
                entry=rc->rq->headers->ht[i];
                while (entry) {
                        add_assoc_string(return_value, entry->param->name, entry->param->value, 1);
                        entry=entry->next;
                }
        }
}
/* }}} */

/* {{{ proto array nsapi_response_headers(void)
   Get all headers from the response */
PHP_FUNCTION(nsapi_response_headers)
{
        register int i;
        struct pb_entry *entry;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        if (zend_parse_parameters_none() == FAILURE) {
                return;
        }
        
        array_init(return_value);

        for (i=0; i < rc->rq->srvhdrs->hsize; i++) {
                entry=rc->rq->srvhdrs->ht[i];
                while (entry) {
                        add_assoc_string(return_value, entry->param->name, entry->param->value, 1);
                        entry=entry->next;
                }
        }
}
/* }}} */


/*************/
/* SAPI part */
/*************/

static int sapi_nsapi_ub_write(const char *str, unsigned int str_length TSRMLS_DC)
{
        int retval;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);
        
        if (!SG(headers_sent)) {
                sapi_send_headers(TSRMLS_C);
        }

        retval = net_write(rc->sn->csd, (char *)str, str_length);
        if (retval == IO_ERROR /* -1 */ || retval == IO_EOF /* 0 */) {
                php_handle_aborted_connection();
        }
        return retval;
}

/* modified version of apache2 */
static void sapi_nsapi_flush(void *server_context)
{
        nsapi_request_context *rc = (nsapi_request_context *)server_context;
        TSRMLS_FETCH();
        
        if (!rc) {
                /* we have no context, so no flushing needed. This fixes a SIGSEGV on shutdown */
                return;
        }

        if (!SG(headers_sent)) {
                sapi_send_headers(TSRMLS_C);
        }

        /* flushing is only supported in iPlanet servers from version 6.1 on, make it conditional */
#if NSAPI_VERSION >= 302
        if (net_flush(rc->sn->csd) < 0) {
                php_handle_aborted_connection();
        }
#endif
}

/* callback for zend_llist_apply on SAPI_HEADER_DELETE_ALL operation */
static int php_nsapi_remove_header(sapi_header_struct *sapi_header TSRMLS_DC)
{
        char *header_name, *p;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);
        
        /* copy the header, because NSAPI needs reformatting and we do not want to change the parameter */
        header_name = pool_strdup(rc->sn->pool, sapi_header->header);

        /* extract name, this works, if only the header without ':' is given, too */
        if (p = strchr(header_name, ':')) {
                *p = 0;
        }
        
        /* header_name to lower case because NSAPI reformats the headers and wants lowercase */
        for (p=header_name; *p; p++) {
                *p=tolower(*p);
        }
        
        /* remove the header */
        param_free(pblock_remove(header_name, rc->rq->srvhdrs));
        pool_free(rc->sn->pool, header_name);
        
        return ZEND_HASH_APPLY_KEEP;
}

static int sapi_nsapi_header_handler(sapi_header_struct *sapi_header, sapi_header_op_enum op, sapi_headers_struct *sapi_headers TSRMLS_DC)
{
        char *header_name, *header_content, *p;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        switch(op) {
                case SAPI_HEADER_DELETE_ALL:
                        /* this only deletes headers set or overwritten by PHP, headers previously set by NSAPI are left intact */
                        zend_llist_apply(&sapi_headers->headers, (llist_apply_func_t) php_nsapi_remove_header TSRMLS_CC);
                        return 0;

                case SAPI_HEADER_DELETE:
                        /* reuse the zend_llist_apply callback function for this, too */
                        php_nsapi_remove_header(sapi_header TSRMLS_CC);
                        return 0;

                case SAPI_HEADER_ADD:
                case SAPI_HEADER_REPLACE:
                        /* copy the header, because NSAPI needs reformatting and we do not want to change the parameter */
                        header_name = pool_strdup(rc->sn->pool, sapi_header->header);

                        /* split header and align pointer for content */
                        header_content = strchr(header_name, ':');
                        if (header_content) {
                                *header_content = 0;
                                do {
                                        header_content++;
                                } while (*header_content==' ');
                                
                                /* header_name to lower case because NSAPI reformats the headers and wants lowercase */
                                for (p=header_name; *p; p++) {
                                        *p=tolower(*p);
                                }

                                /* if REPLACE, remove first.  "Content-type" is always removed, as SAPI has a bug according to this */
                                if (op==SAPI_HEADER_REPLACE || strcmp(header_name, "content-type")==0) {
                                        param_free(pblock_remove(header_name, rc->rq->srvhdrs));
                                }
                                /* ADD header to nsapi table */
                                pblock_nvinsert(header_name, header_content, rc->rq->srvhdrs);
                        }
                        
                        pool_free(rc->sn->pool, header_name);
                        return SAPI_HEADER_ADD;
                        
                default:
                        return 0;
        }
}

static int sapi_nsapi_send_headers(sapi_headers_struct *sapi_headers TSRMLS_DC)
{
        int retval;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        if (SG(sapi_headers).send_default_content_type) {
                char *hd;
                param_free(pblock_remove("content-type", rc->rq->srvhdrs));
                hd = sapi_get_default_content_type(TSRMLS_C);
                pblock_nvinsert("content-type", hd, rc->rq->srvhdrs);
                efree(hd);
        }

        protocol_status(rc->sn, rc->rq, SG(sapi_headers).http_response_code, NULL);
        retval = protocol_start_response(rc->sn, rc->rq);

        if (retval == REQ_PROCEED || retval == REQ_NOACTION) {
                return SAPI_HEADER_SENT_SUCCESSFULLY;
        } else {
                return SAPI_HEADER_SEND_FAILED;
        }
}

static int sapi_nsapi_read_post(char *buffer, uint count_bytes TSRMLS_DC)
{
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);
        char *read_ptr = buffer, *content_length_str = NULL;
        uint bytes_read = 0;
        int length, content_length = 0;
        netbuf *nbuf = rc->sn->inbuf;

        /*
         *      Yesss!
         */
        count_bytes = MIN(count_bytes, SG(request_info).content_length-rc->read_post_bytes);
        content_length = SG(request_info).content_length;

        if (content_length <= 0) {
                return 0;
        }

        /*
         * Gobble any pending data in the netbuf.
         */
        length = nbuf->cursize - nbuf->pos;
        length = MIN(count_bytes, length);
        if (length > 0) {
                memcpy(read_ptr, nbuf->inbuf + nbuf->pos, length);
                bytes_read += length;
                read_ptr += length;
                content_length -= length;
                nbuf->pos += length;
        }

        /*
         * Read the remaining from the socket.
         */
        while (content_length > 0 && bytes_read < count_bytes) {
                int bytes_to_read = count_bytes - bytes_read;

                if (content_length < bytes_to_read) {
                        bytes_to_read = content_length;
                }

                length = net_read(rc->sn->csd, read_ptr, bytes_to_read, NSAPI_G(read_timeout));

                if (length == IO_ERROR || length == IO_EOF) {
                        break;
                }

                bytes_read += length;
                read_ptr += length;
                content_length -= length;
        }

        if ( bytes_read > 0 ) {
                rc->read_post_bytes += bytes_read;
        }
        return bytes_read;
}

static char *sapi_nsapi_read_cookies(TSRMLS_D)
{
        char *cookie_string;
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        cookie_string = pblock_findval("cookie", rc->rq->headers);
        return cookie_string;
}

static void sapi_nsapi_register_server_variables(zval *track_vars_array TSRMLS_DC)
{
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);
        register size_t i;
        int pos;
        char *value,*p;
        char buf[32];
        struct pb_entry *entry;

        for (i = 0; i < nsapi_reqpb_size; i++) {
                value = pblock_findval(nsapi_reqpb[i].nsapi_eq, rc->rq->reqpb);
                if (value) {
                        php_register_variable((char *)nsapi_reqpb[i].env_var, value, track_vars_array TSRMLS_CC);
                }
        }

        for (i=0; i < rc->rq->headers->hsize; i++) {
                entry=rc->rq->headers->ht[i];
                while (entry) {
                        if (strcasecmp(entry->param->name, "content-length")==0 || strcasecmp(entry->param->name, "content-type")==0) {
                                value=estrdup(entry->param->name);
                                pos = 0;
                        } else {
                                spprintf(&value, 0, "HTTP_%s", entry->param->name);
                                pos = 5;
                        }
                        if (value) {
                                for(p = value + pos; *p; p++) {
                                        *p = toupper(*p);
                                        if (!isalnum(*p)) {
                                                *p = '_';
                                        }
                                }
                                php_register_variable(value, entry->param->value, track_vars_array TSRMLS_CC);
                                efree(value);
                        }
                        entry=entry->next;
                }
        }

        for (i = 0; i < nsapi_vars_size; i++) {
                value = pblock_findval(nsapi_vars[i].nsapi_eq, rc->rq->vars);
                if (value) {
                        php_register_variable((char *)nsapi_vars[i].env_var, value, track_vars_array TSRMLS_CC);
                }
        }

        for (i = 0; i < nsapi_client_size; i++) {
                value = pblock_findval(nsapi_client[i].nsapi_eq, rc->sn->client);
                if (value) {
                        php_register_variable((char *)nsapi_client[i].env_var, value, track_vars_array TSRMLS_CC);
                }
        }

        if (value = session_dns(rc->sn)) {
                php_register_variable("REMOTE_HOST", value, track_vars_array TSRMLS_CC);
                nsapi_free(value);
        }

        slprintf(buf, sizeof(buf), "%d", conf_getglobals()->Vport);
        php_register_variable("SERVER_PORT", buf, track_vars_array TSRMLS_CC);
        php_register_variable("SERVER_NAME", conf_getglobals()->Vserver_hostname, track_vars_array TSRMLS_CC);

        value = http_uri2url_dynamic("", "", rc->sn, rc->rq);
        php_register_variable("SERVER_URL", value, track_vars_array TSRMLS_CC);
        nsapi_free(value);

        php_register_variable("SERVER_SOFTWARE", system_version(), track_vars_array TSRMLS_CC);
        if (security_active) {
                php_register_variable("HTTPS", "ON", track_vars_array TSRMLS_CC);
        }
        php_register_variable("GATEWAY_INTERFACE", "CGI/1.1", track_vars_array TSRMLS_CC);

        /* DOCUMENT_ROOT */
        if (value = request_translate_uri("/", rc->sn)) {
                pos = strlen(value);
                php_register_variable_safe("DOCUMENT_ROOT", value, pos-1, track_vars_array TSRMLS_CC);
                nsapi_free(value);
        }

        /* PATH_INFO / PATH_TRANSLATED */
        if (rc->path_info) {
                if (value = request_translate_uri(rc->path_info, rc->sn)) {
                        php_register_variable("PATH_TRANSLATED", value, track_vars_array TSRMLS_CC);
                        nsapi_free(value);
                }
                php_register_variable("PATH_INFO", rc->path_info, track_vars_array TSRMLS_CC);
        }

        /* Create full Request-URI & Script-Name */
        if (SG(request_info).request_uri) {
                pos = strlen(SG(request_info).request_uri);
                
                if (SG(request_info).query_string) {
                        spprintf(&value, 0, "%s?%s", SG(request_info).request_uri, SG(request_info).query_string);
                        if (value) {
                                php_register_variable("REQUEST_URI", value, track_vars_array TSRMLS_CC);
                                efree(value);
                        }
                } else {
                        php_register_variable_safe("REQUEST_URI", SG(request_info).request_uri, pos, track_vars_array TSRMLS_CC);
                }

                if (rc->path_info) {
                        pos -= strlen(rc->path_info);
                        if (pos<0) {
                                pos = 0;
                        }
                }
                php_register_variable_safe("SCRIPT_NAME", SG(request_info).request_uri, pos, track_vars_array TSRMLS_CC);
        }
        php_register_variable("SCRIPT_FILENAME", SG(request_info).path_translated, track_vars_array TSRMLS_CC);

        /* special variables in error mode */
        if (rc->http_error) {
                slprintf(buf, sizeof(buf), "%d", rc->http_error);
                php_register_variable("ERROR_TYPE", buf, track_vars_array TSRMLS_CC);
        }
}

static void nsapi_log_message(char *message TSRMLS_DC)
{
        nsapi_request_context *rc = (nsapi_request_context *)SG(server_context);

        if (rc) {
                log_error(LOG_INFORM, pblock_findval("fn", rc->pb), rc->sn, rc->rq, "%s", message);
        } else {
                log_error(LOG_INFORM, "php5", NULL, NULL, "%s", message);
        }
}

static double sapi_nsapi_get_request_time(TSRMLS_D)
{
        return REQ_TIME( ((nsapi_request_context *)SG(server_context))->rq );
}

static int php_nsapi_startup(sapi_module_struct *sapi_module)
{
        if (php_module_startup(sapi_module, &nsapi_module_entry, 1)==FAILURE) {
                return FAILURE;
        }
        return SUCCESS;
}

static struct stat* sapi_nsapi_get_stat(TSRMLS_D)
{
        return request_stat_path(
                SG(request_info).path_translated,
                ((nsapi_request_context *)SG(server_context))->rq
        );
}

static sapi_module_struct nsapi_sapi_module = {
        "nsapi",                                /* name */
        "NSAPI",                                /* pretty name */

        php_nsapi_startup,                      /* startup */
        php_module_shutdown_wrapper,            /* shutdown */

        NULL,                                   /* activate */
        NULL,                                   /* deactivate */

        sapi_nsapi_ub_write,                    /* unbuffered write */
        sapi_nsapi_flush,                       /* flush */
        sapi_nsapi_get_stat,                    /* get uid/stat */
        NULL,                                   /* getenv */

        php_error,                              /* error handler */

        sapi_nsapi_header_handler,              /* header handler */
        sapi_nsapi_send_headers,                /* send headers handler */
        NULL,                                   /* send header handler */

        sapi_nsapi_read_post,                   /* read POST data */
        sapi_nsapi_read_cookies,                /* read Cookies */

        sapi_nsapi_register_server_variables,   /* register server variables */
        nsapi_log_message,                      /* Log message */
        sapi_nsapi_get_request_time,                    /* Get request time */
        NULL,                                                                   /* Child terminate */

        NULL,                                   /* Block interruptions */
        NULL,                                   /* Unblock interruptions */

        STANDARD_SAPI_MODULE_PROPERTIES
};

static void nsapi_php_ini_entries(NSLS_D TSRMLS_DC)
{
        struct pb_entry *entry;
        register int i,j,ok;

        for (i=0; i < NSG(pb)->hsize; i++) {
                entry=NSG(pb)->ht[i];
                while (entry) {
                        /* exclude standard entries given to "Service" which should not go into ini entries */
                        ok=1;
                        for (j=0; nsapi_exclude_from_ini_entries[j]; j++) {
                                ok&=(strcasecmp(entry->param->name, nsapi_exclude_from_ini_entries[j])!=0);
                        }

                        if (ok) {
                                /* change the ini entry */
                                if (zend_alter_ini_entry(entry->param->name, strlen(entry->param->name)+1,
                                 entry->param->value, strlen(entry->param->value),
                                 PHP_INI_SYSTEM, PHP_INI_STAGE_ACTIVATE)==FAILURE) {
                                        log_error(LOG_WARN, pblock_findval("fn", NSG(pb)), NSG(sn), NSG(rq), "Cannot change php.ini key \"%s\" to \"%s\"", entry->param->name, entry->param->value);
                                }
                        }
                        entry=entry->next;
                }
        }
}

void NSAPI_PUBLIC php5_close(void *vparam)
{
        if (nsapi_sapi_module.shutdown) {
                nsapi_sapi_module.shutdown(&nsapi_sapi_module);
        }

        if (nsapi_sapi_module.php_ini_path_override) {
                free(nsapi_sapi_module.php_ini_path_override);
        }
        
#ifdef PHP_WIN32
        if (nsapi_dll) {
                free(nsapi_dll);
                nsapi_dll = NULL;
        }
#endif  

        sapi_shutdown();
        tsrm_shutdown();

        log_error(LOG_INFORM, "php5_close", NULL, NULL, "Shutdown PHP Module");
}

/*********************************************************
/ init SAF
/
/ Init fn="php5_init" [php_ini="/path/to/php.ini"] [server_lib="ns-httpdXX.dll"]
/   Initialize the NSAPI module in magnus.conf
/
/ php_ini: gives path to php.ini file
/ server_lib: (only Win32) gives name of DLL (without path) to look for
/  servact_* functions
/
/*********************************************************/
int NSAPI_PUBLIC php5_init(pblock *pb, Session *sn, Request *rq)
{
        php_core_globals *core_globals;
        char *strval;
        int threads=128; /* default for server */

        /* fetch max threads from NSAPI and initialize TSRM with it */
        threads=conf_getglobals()->Vpool_maxthreads;
        if (threads<1) {
                threads=128; /* default for server */
        }
        tsrm_startup(threads, 1, 0, NULL);

        core_globals = ts_resource(core_globals_id);

        /* look if php_ini parameter is given to php5_init */
        if (strval = pblock_findval("php_ini", pb)) {
                nsapi_sapi_module.php_ini_path_override = strdup(strval);
        }
        
#ifdef PHP_WIN32
        /* look if server_lib parameter is given to php5_init
         * (this disables the automatic search for the newest ns-httpdXX.dll) */
        if (strval = pblock_findval("server_lib", pb)) {
                nsapi_dll = strdup(strval);
        }
#endif  

        /* start SAPI */
        sapi_startup(&nsapi_sapi_module);
        nsapi_sapi_module.startup(&nsapi_sapi_module);

        daemon_atrestart(&php5_close, NULL);

        log_error(LOG_INFORM, pblock_findval("fn", pb), sn, rq, "Initialized PHP Module (%d threads expected)", threads);
        return REQ_PROCEED;
}

/*********************************************************
/ normal use in Service directive:
/
/ Service fn="php5_execute" type=... method=... [inikey=inivalue inikey=inivalue...]
/
/ use in Service for a directory to supply a php-made directory listing instead of server default:
/
/ Service fn="php5_execute" type="magnus-internal/directory" script="/path/to/script.php" [inikey=inivalue inikey=inivalue...]
/
/ use in Error SAF to display php script as error page:
/
/ Error fn="php5_execute" code=XXX script="/path/to/script.php" [inikey=inivalue inikey=inivalue...]
/ Error fn="php5_execute" reason="Reason" script="/path/to/script.php" [inikey=inivalue inikey=inivalue...]
/
/*********************************************************/
int NSAPI_PUBLIC php5_execute(pblock *pb, Session *sn, Request *rq)
{
        int retval;
        nsapi_request_context *request_context;
        zend_file_handle file_handle = {0};
        struct stat *fst;

        char *path_info;
        char *query_string    = pblock_findval("query", rq->reqpb);
        char *uri             = pblock_findval("uri", rq->reqpb);
        char *request_method  = pblock_findval("method", rq->reqpb);
        char *content_type    = pblock_findval("content-type", rq->headers);
        char *content_length  = pblock_findval("content-length", rq->headers);
        char *directive       = pblock_findval("Directive", pb);
        int error_directive   = (directive && !strcasecmp(directive, "error"));
        int fixed_script      = 1;

        /* try to use script parameter -> Error or Service for directory listing */
        char *path_translated = pblock_findval("script", pb);

        TSRMLS_FETCH();

        /* if script parameter is missing: normal use as Service SAF  */
        if (!path_translated) {
                path_translated = pblock_findval("path", rq->vars);
                path_info       = pblock_findval("path-info", rq->vars);
                fixed_script = 0;
                if (error_directive) {
                        /* go to next error directive if script parameter is missing */
                        log_error(LOG_WARN, pblock_findval("fn", pb), sn, rq, "Missing 'script' parameter");
                        return REQ_NOACTION;
                }
        } else {
                /* in error the path_info is the uri to the requested page */
                path_info = pblock_findval("uri", rq->reqpb);
        }

        /* check if this uri was included in an other PHP script with nsapi_virtual()
           by looking for a request context in the current thread */
        if (SG(server_context)) {
                /* send 500 internal server error */
                log_error(LOG_WARN, pblock_findval("fn", pb), sn, rq, "Cannot make nesting PHP requests with nsapi_virtual()");
                if (error_directive) {
                        return REQ_NOACTION;
                } else {
                        protocol_status(sn, rq, 500, NULL);
                        return REQ_ABORTED;
                }
        }

        request_context = (nsapi_request_context *)pool_malloc(sn->pool, sizeof(nsapi_request_context));
        if (!request_context) {
                log_error(LOG_CATASTROPHE, pblock_findval("fn", pb), sn, rq, "Insufficient memory to process PHP request!");
                return REQ_ABORTED;
        }
        request_context->pb = pb;
        request_context->sn = sn;
        request_context->rq = rq;
        request_context->read_post_bytes = 0;
        request_context->fixed_script = fixed_script;
        request_context->http_error = (error_directive) ? rq->status_num : 0;
        request_context->path_info = path_info;

        SG(server_context) = request_context;
        SG(request_info).query_string = query_string;
        SG(request_info).request_uri = uri;
        SG(request_info).request_method = request_method;
        SG(request_info).path_translated = path_translated;
        SG(request_info).content_type = content_type;
        SG(request_info).content_length = (content_length == NULL) ? 0 : strtoul(content_length, 0, 0);
        SG(sapi_headers).http_response_code = (error_directive) ? rq->status_num : 200;
        
        nsapi_php_ini_entries(NSLS_C TSRMLS_CC);

        php_handle_auth_data(pblock_findval("authorization", rq->headers) TSRMLS_CC);

        file_handle.type = ZEND_HANDLE_FILENAME;
        file_handle.filename = SG(request_info).path_translated;
        file_handle.free_filename = 0;
        file_handle.opened_path = NULL;

        fst = request_stat_path(SG(request_info).path_translated, rq);
        if (fst && S_ISREG(fst->st_mode)) {
                if (php_request_startup(TSRMLS_C) == SUCCESS) {
                        php_execute_script(&file_handle TSRMLS_CC);
                        php_request_shutdown(NULL);
                        retval=REQ_PROCEED;
                } else {
                        /* send 500 internal server error */
                        log_error(LOG_WARN, pblock_findval("fn", pb), sn, rq, "Cannot prepare PHP engine!");
                        if (error_directive) {
                                retval=REQ_NOACTION;
                        } else {
                                protocol_status(sn, rq, 500, NULL);
                                retval=REQ_ABORTED;
                        }
                }
        } else {
                /* send 404 because file not found */
                log_error(LOG_WARN, pblock_findval("fn", pb), sn, rq, "Cannot execute PHP script: %s (File not found)", SG(request_info).path_translated);
                if (error_directive) {
                        retval=REQ_NOACTION;
                } else {
                        protocol_status(sn, rq, 404, NULL);
                        retval=REQ_ABORTED;
                }
        }

        pool_free(sn->pool, request_context);
        SG(server_context) = NULL;

        return retval;
}

/*********************************************************
/ authentication
/
/ we have to make a 'fake' authenticator for netscape so it
/ will pass authentication through to php, and allow us to
/ check authentication with our scripts.
/
/ php5_auth_trans
/   main function called from netscape server to authenticate
/   a line in obj.conf:
/               funcs=php5_auth_trans shlib="path/to/this/phpnsapi.dll"
/       and:
/               <Object ppath="path/to/be/authenticated/by/php/*">
/               AuthTrans fn="php5_auth_trans"
/*********************************************************/
int NSAPI_PUBLIC php5_auth_trans(pblock * pb, Session * sn, Request * rq)
{
        /* This is a DO NOTHING function that allows authentication
         * information
         * to be passed through to PHP scripts.
         */
        return REQ_PROCEED;
}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: sw=4 ts=4 fdm=marker
 * vim<600: sw=4 ts=4
 */

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