/** @file
Parser: apache 1.3 module, part, compiled by Apache.
Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/
static const char* IDENT_MOD_PARSER3_C="$Date: 2003/09/02 06:59:40 $";
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_main.h"
#include "http_protocol.h"
#include "util_script.h"
#include "ap_md5.h"
#include "ap_alloc.h"
#include "pa_httpd.h"
/*
* Declare ourselves so the configuration routines can find and know us.
* We'll fill it in at the end of the module.
*/
extern module MODULE_VAR_EXPORT parser3_module;
/*
* Locate our directory configuration record for the current request.
*/
static Parser_module_config *our_dconfig(request_rec *r) {
return (Parser_module_config *)
ap_get_module_config(r->per_dir_config, &parser3_module);
}
static const char* cmd_parser_config(cmd_parms *cmd, void *mconfig, char *file_spec) {
Parser_module_config *cfg = (Parser_module_config *) mconfig;
// remember assigned filespec into cfg
cfg->parser_config_filespec=file_spec;
return NULL;
}
static const char* cmd_parser_status_allowed(cmd_parms *cmd, void *mconfig, char *file_spec) {
//_asm int 3;
Parser_module_config *cfg = (Parser_module_config *) mconfig;
cfg->parser_status_allowed=1;
return NULL;
}
/*--------------------------------------------------------------------------*/
/* */
/* Now we declare our content handlers, which are invoked when the server */
/* encounters a document which our module is supposed to have a chance to */
/* see. (See mod_mime's SetHandler and AddHandler directives, and the */
/* mod_info and mod_status examples, for more details.) */
/* */
/* Since content handlers are dumping data directly into the connexion */
/* (using the r*() routines, such as rputs() and rprintf()) without */
/* intervention by other parts of the server, they need to make */
/* sure any accumulated HTTP headers are sent first. This is done by */
/* calling send_http_header(). Otherwise, no header will be sent at all, */
/* and the output sent to the client will actually be HTTP-uncompliant. */
/*--------------------------------------------------------------------------*/
/*
* Sample content handler. All this does is display the call list that has
* been built up so far.
*
* The return value instructs the caller concerning what happened and what to
* do next:
* OK ("we did our thing")
* DECLINED ("this isn't something with which we want to get involved")
* HTTP_mumble ("an error status should be reported")
*/
/*--------------------------------------------------------------------------*/
/* */
/* Now let's declare routines for each of the callback phase in order. */
/* (That's the order in which they're listed in the callback list, *not */
/* the order in which the server calls them! See the command_rec */
/* declaration near the bottom of this file.) Note that these may be */
/* called for situations that don't relate primarily to our function - in */
/* other words, the fixup handler shouldn't assume that the request has */
/* to do with "example" stuff. */
/* */
/* With the exception of the content handler, all of our routines will be */
/* called for each request, unless an earlier handler from another module */
/* aborted the sequence. */
/* */
/* Handlers that are declared as "int" can return the following: */
/* */
/* OK Handler accepted the request and did its thing with it. */
/* DECLINED Handler took no action. */
/* HTTP_mumble Handler looked at request and found it wanting. */
/* */
/* What the server does after calling a module handler depends upon the */
/* handler's return value. In all cases, if the handler returns */
/* DECLINED, the server will continue to the next module with an handler */
/* for the current phase. However, if the handler return a non-OK, */
/* non-DECLINED status, the server aborts the request right there. If */
/* the handler returns OK, the server's next action is phase-specific; */
/* see the individual handler comments below for details. */
/* */
/*--------------------------------------------------------------------------*/
static int parser_handler(request_rec *ar) {
// record clone
pa_request_rec lr={
ar,
ar->pool,
ar->header_only,
&ar->status,
ar->method,
ar->headers_out,
ar->subprocess_env,
ar->content_type,
ar->uri,
ar->filename,
ar->path_info,
ar->args,
&ar->finfo
};
// config
Parser_module_config *dcfg=our_dconfig(ar);
return pa_parser_handler(&lr, dcfg);
}
/*
* This function is called during server initialisation. Any information
* that needs to be recorded must be in static cells, since there's no
* configuration record.
*
* There is no return value.
*/
static void parser_server_init(server_rec *s, pool *p) {
#if MODULE_MAGIC_NUMBER >= 19980527
ap_add_version_component(pa_version());
#endif
/*
* Set up any module cells that ought to be initialised.
*/
pa_setup_module_cells();
}
/*
* This function gets called to create a per-directory configuration
* record. This will be called for the "default" server environment, and for
* each directory for which the parser finds any of our directives applicable.
* If a directory doesn't have any of our directives involved (i.e., they
* aren't in the .htaccess file, or a <Location>, <Directory>, or related
* block), this routine will *not* be called - the configuration for the
* closest ancestor is used.
*
* The return value is a pointer to the created module-specific
* structure.
*/
static void *parser_create_dir_config(pool *p, char *dirspec) {
//_asm int 3;
/*
* Allocate the space for our record from the pool supplied.
*/
Parser_module_config *cfg=
(Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
/*
* Now fill in the defaults. If there are any `parent' configuration
* records, they'll get merged as part of a separate callback.
*/
return (void *) cfg;
}
/*
* This function gets called to merge two per-directory configuration
* records. This is typically done to cope with things like .htaccess files
* or <Location> directives for directories that are beneath one for which a
* configuration record was already created. The routine has the
* responsibility of creating a new record and merging the contents of the
* other two into it appropriately. If the module doesn't declare a merge
* routine, the record for the closest ancestor location (that has one) is
* used exclusively.
*
* The routine MUST NOT modify any of its arguments!
*
* The return value is a pointer to the created module-specific structure
* containing the merged values.
20011126 paf: noticed, that this is called even on virtual root merge with something "parent",
while thought that that is part of merge_server...
*/
static void *parser_merge_dir_config(pool *p, void *parent_conf,
void *newloc_conf) {
//_asm int 3;
Parser_module_config *merged_config =
(Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
Parser_module_config *pconf = (Parser_module_config *) parent_conf;
Parser_module_config *nconf = (Parser_module_config *) newloc_conf;
merged_config->parser_config_filespec = ap_pstrdup(p, nconf->parser_config_filespec?
nconf->parser_config_filespec:pconf->parser_config_filespec);
merged_config->parser_status_allowed=
pconf->parser_status_allowed ||
nconf->parser_status_allowed;
/*
* Some things get copied directly from the more-specific record, rather
* than getting merged.
*/
return (void *) merged_config;
}
/*
* This function gets called to create a per-server configuration
* record. It will always be called for the "default" server.
*
* The return value is a pointer to the created module-specific
* structure.
*/
static void *parser_create_server_config(pool *p, server_rec *s) {
//_asm int 3;
/*
* As with the parser_create_dir_config() routine, we allocate and fill
* in an empty record.
*/
Parser_module_config *cfg=
(Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
return (void *) cfg;
}
/*
* This function gets called to merge two per-server configuration
* records. This is typically done to cope with things like virtual hosts and
* the default server configuration The routine has the responsibility of
* creating a new record and merging the contents of the other two into it
* appropriately. If the module doesn't declare a merge routine, the more
* specific existing record is used exclusively.
*
* The routine MUST NOT modify any of its arguments!
*
* The return value is a pointer to the created module-specific structure
* containing the merged values.
*/
static void *parser_merge_server_config(pool *p, void *server1_conf,
void *server2_conf)
{
//_asm int 3;
Parser_module_config *merged_config =
(Parser_module_config *) ap_pcalloc(p, sizeof(Parser_module_config));
Parser_module_config *s1conf = (Parser_module_config *) server1_conf;
Parser_module_config *s2conf = (Parser_module_config *) server2_conf;
/*
* Our inheritance rules are our own, and part of our module's semantics.
* Basically, just note whence we came.
*/
merged_config->parser_config_filespec = ap_pstrdup(p, s2conf->parser_config_filespec?
s2conf->parser_config_filespec:s1conf->parser_config_filespec);
merged_config->parser_status_allowed=
s1conf->parser_status_allowed ||
s2conf->parser_status_allowed;
return (void *) merged_config;
}
/*
* This routine gives our module an opportunity to translate the URI into an
* actual filename. If we don't do anything special, the server's default
* rules (Alias directives and the like) will continue to be followed.
*
* The return value is OK, DECLINED, or HTTP_mumble. If we return OK, no
* further modules are called for this phase.
*/
static int parser_translate_handler(request_rec *r) {
Parser_module_config *cfg=our_dconfig(r);
return DECLINED;
}
/*
* This routine is called to check the authentication information sent with
* the request (such as looking up the user in a database and verifying that
* the [encrypted] password sent matches the one in the database).
*
* The return value is OK, DECLINED, or some HTTP_mumble error (typically
* HTTP_UNAUTHORIZED). If we return OK, no other modules are given a chance
* at the request during this phase.
*/
static int parser_check_user_id(request_rec *r) {
Parser_module_config *cfg=our_dconfig(r);
return DECLINED;
}
/*
* This routine is called to check to see if the resource being requested
* requires authorisation.
*
* The return value is OK, DECLINED, or HTTP_mumble. If we return OK, no
* other modules are called during this phase.
*
* If *all* modules return DECLINED, the request is aborted with a server
* error.
*/
static int parser_auth_checker(request_rec *r) {
Parser_module_config *cfg=our_dconfig(r);
return DECLINED;
}
/*
* This routine is called to check for any module-specific restrictions placed
* upon the requested resource. (See the mod_access module for an example.)
*
* The return value is OK, DECLINED, or HTTP_mumble. All modules with an
* handler for this phase are called regardless of whether their predecessors
* return OK or DECLINED. The first one to return any other status, however,
* will abort the sequence (and the request) as usual.
*/
static int parser_access_checker(request_rec *r) {
Parser_module_config *cfg=our_dconfig(r);
return DECLINED;
}
/*--------------------------------------------------------------------------*/
/* */
/* All of the routines have been declared now. Here's the list of */
/* directives specific to our module, and information about where they */
/* may appear and how the command parser should pass them to us for */
/* processing. Note that care must be taken to ensure that there are NO */
/* collisions of directive names between modules. */
/* */
/*--------------------------------------------------------------------------*/
/*
* List of directives specific to our module.
*/
static const command_rec parser_cmds[] =
{
{
"ParserConfig", /* directive name */
(const char* (*)(void))((void *)cmd_parser_config), // config action routine
(void*)0, /* argument to include in call */
(int)(OR_OPTIONS), /* where available */
TAKE1, /* arguments */
"Parser config filespec" // directive description
},
{
"ParserStatusAllowed", /* directive name */
(const char* (*)(void))((void *)cmd_parser_status_allowed), // config action routine
(void*)0, /* argument to include in call */
(int)(ACCESS_CONF), /* where available */
NO_ARGS, /* arguments */
"Parser status class can be used" // directive description
},
{NULL}
};
/*--------------------------------------------------------------------------*/
/* */
/* Now the list of content handlers available from this module. */
/* */
/*--------------------------------------------------------------------------*/
/*
* List of content handlers our module supplies. Each handler is defined by
* two parts: a name by which it can be referenced (such as by
* {Add,Set}Handler), and the actual routine name. The list is terminated by
* a NULL block, since it can be of variable length.
*
* Note that content-handlers are invoked on a most-specific to least-specific
* basis; that is, a handler that is declared for "text/plain" will be
* invoked before one that was declared for "text / *". Note also that
* if a content-handler returns anything except DECLINED, no other
* content-handlers will be called.
*/
static const handler_rec parser_handlers[] =
{
{"parser3-handler", parser_handler},
{NULL}
};
/*--------------------------------------------------------------------------*/
/* */
/* Finally, the list of callback routines and data structures that */
/* provide the hooks into our module from the other parts of the server. */
/* */
/*--------------------------------------------------------------------------*/
/*
* Module definition for configuration. If a particular callback is not
* needed, replace its routine name below with the word NULL.
*
* The number in brackets indicates the order in which the routine is called
* during request processing. Note that not all routines are necessarily
* called (such as if a resource doesn't have access restrictions).
*/
module MODULE_VAR_EXPORT parser3_module =
{
STANDARD_MODULE_STUFF,
parser_server_init, /* module initializer */
parser_create_dir_config, /* per-directory config creator */
parser_merge_dir_config, /* dir config merger */
parser_create_server_config, /* server config creator */
parser_merge_server_config, /* server config merger */
parser_cmds, /* command table */
parser_handlers, /* [9] list of handlers */
parser_translate_handler, /* [2] filename-to-URI translation */
parser_check_user_id, /* [5] check/validate user_id */
parser_auth_checker, /* [6] check user_id is valid *here* */
parser_access_checker, /* [4] check access by host address */
0, /* [7] MIME type checker/setter */
0, /* [8] fixups */
0 /* [10] logger */
};
#if defined(_MSC_VER)
# define APACHE_WIN32_SRC "/parser3project/win32/apache13/src"
# ifdef _DEBUG
# pragma comment(lib, APACHE_WIN32_SRC "/CoreD/ApacheCore.lib")
# else
# pragma comment(lib, APACHE_WIN32_SRC "/CoreR/ApacheCore.lib")
# endif
#endif
// interface to C++
#define PA_APLOG_EMERG 0 /* system is unusable */
#define PA_APLOG_ALERT 1 /* action must be taken immediately */
#define PA_APLOG_CRIT 2 /* critical conditions */
#define PA_APLOG_ERR 3 /* error conditions */
#define PA_APLOG_WARNING 4 /* warning conditions */
#define PA_APLOG_NOTICE 5 /* normal but significant condition */
#define PA_APLOG_INFO 6 /* informational */
#define PA_APLOG_DEBUG 7 /* debug-level messages */
#define PA_APLOG_LEVELMASK 7 /* mask off the level value */
#define PA_APLOG_NOERRNO (PA_APLOG_LEVELMASK + 1)
#define PA_APLOG_MARK __FILE__,__LINE__
void pa_ap_log_rerror(const char *file, int line, int level,
const pa_request_rec *s, const char *fmt, ...) {
const char* str;
va_list l;
va_start(l, fmt);
str=va_arg(l, const char*);
va_end(l);
ap_log_rerror(file, line, level,
(request_rec*)s->real_request_rec, "%s", str);
}
void pa_ap_log_error(const char *file, int line, int level,
const pa_server_rec *s, const char *fmt, ...) {
const char* str;
va_list l;
va_start(l, fmt);
str=va_arg(l, const char*);
va_end(l);
ap_log_error(file, line, level,
(server_rec*)s, "%s", str);
}
// ap_alloc.h
const char* pa_ap_table_get(const pa_table *t, const char *name) {
return ap_table_get((const table*)t, name);
}
void pa_ap_table_addn(pa_table *t, const char *name, const char *val) {
ap_table_addn((table*)t, name, val);
}
int pa_ap_table_size(const pa_table *t) {
return ap_table_elts((const table*)t)->nelts;
}
void pa_ap_table_do(int (*comp) (void *, const char *, const char *),
void *rec, const pa_table *t, ...) {
ap_table_do(comp, rec, (table*)t, 0);
}
char * pa_ap_pstrdup(pa_pool *p, const char *s) {
return ap_pstrdup((pool*)p, s);
}
// http_protocol.h
int pa_ap_setup_client_block(pa_request_rec *r, int read_policy) {
return ap_setup_client_block((request_rec*)r->real_request_rec,
read_policy);
}
int pa_ap_should_client_block(pa_request_rec *r) {
return ap_should_client_block((request_rec*)r->real_request_rec);
}
long pa_ap_get_client_block(pa_request_rec *r, char *buffer, int bufsiz) {
return ap_get_client_block((request_rec*)r->real_request_rec,
buffer, bufsiz);
}
void pa_ap_send_http_header(pa_request_rec *r) {
ap_send_http_header((request_rec*)r->real_request_rec);
}
int pa_ap_rwrite(const void *buf, int nbyte, pa_request_rec *r) {
return ap_rwrite(buf, nbyte, (request_rec*)r->real_request_rec);
}
// http_main.h
void pa_ap_hard_timeout(char *s, pa_request_rec *r) {
ap_hard_timeout(s, (request_rec*)r->real_request_rec);
}
void pa_ap_reset_timeout(pa_request_rec *r) {
ap_reset_timeout((request_rec*)r->real_request_rec);
}
void pa_ap_kill_timeout(pa_request_rec *r) {
ap_kill_timeout((request_rec*)r->real_request_rec);
}
// util_script.h
void pa_ap_add_cgi_vars(pa_request_rec *r) {
ap_add_cgi_vars((request_rec*)r->real_request_rec);
}
void pa_ap_add_common_vars(pa_request_rec *r) {
ap_add_common_vars((request_rec*)r->real_request_rec);
}
// ap_md5.h
void pa_MD5Init(PA_MD5_CTX *context) { ap_MD5Init((AP_MD5_CTX*)context); }
void pa_MD5Update(PA_MD5_CTX *context, const unsigned char *input,
unsigned int inputLen) { ap_MD5Update((AP_MD5_CTX *)context, input, inputLen); }
void pa_MD5Final(unsigned char digest[MD5_DIGESTSIZE],
PA_MD5_CTX *context) { ap_MD5Final(digest, (AP_MD5_CTX *)context); }
void pa_MD5Encode(const unsigned char *password,
const unsigned char *salt,
char *result, size_t nbytes) { ap_MD5Encode(password, salt, result, nbytes); }
void pa_to64(char *s, unsigned long v, int n) { ap_to64(s, v, n); }
// signal.h
void (*pa_signal (int sig, void (*disp)(int)))(int) {
if(sig==PA_SIGPIPE && disp==PA_SIG_IGN)
return signal(SIGPIPE, SIG_IGN);
return 0;
}
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