mod_setenvif.c revision 68dfc95acc4fde241e0124dd29cdda973bd6ec2c
842ae4bd224140319ae7feec1872b93dfd491143fielding/* Licensed to the Apache Software Foundation (ASF) under one or more
842ae4bd224140319ae7feec1872b93dfd491143fielding * contributor license agreements. See the NOTICE file distributed with
842ae4bd224140319ae7feec1872b93dfd491143fielding * this work for additional information regarding copyright ownership.
842ae4bd224140319ae7feec1872b93dfd491143fielding * The ASF licenses this file to You under the Apache License, Version 2.0
842ae4bd224140319ae7feec1872b93dfd491143fielding * (the "License"); you may not use this file except in compliance with
842ae4bd224140319ae7feec1872b93dfd491143fielding * the License. You may obtain a copy of the License at
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb *
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * http://www.apache.org/licenses/LICENSE-2.0
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb *
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * Unless required by applicable law or agreed to in writing, software
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * distributed under the License is distributed on an "AS IS" BASIS,
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * See the License for the specific language governing permissions and
ce9621257ef9e54c1bbe5ad8a5f445a1f211c2dcnd * limitations under the License.
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb */
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb/*
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * mod_setenvif.c
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * Set environment variables based on matching request headers or
e8f95a682820a599fe41b22977010636be5c2717jim * attributes against regex strings
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb *
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * Paul Sutton <paul@ukweb.com> 27 Oct 1996
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * Based on mod_browser by Alexei Kosut <akosut@organic.com>
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb */
a253b0b3e7a5a72e32c0571a2faf336a5f5f54barbb
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb/*
f0f24fc0cd692d203ba4754dc215581d7a88b5c7rbb * Used to set environment variables based on the incoming request headers,
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * or some selected other attributes of the request (e.g., the remote host
6802e2ec90893c9cf0c89149d429ad49927594a6rbb * name).
6802e2ec90893c9cf0c89149d429ad49927594a6rbb *
6802e2ec90893c9cf0c89149d429ad49927594a6rbb * Usage:
6802e2ec90893c9cf0c89149d429ad49927594a6rbb *
6802e2ec90893c9cf0c89149d429ad49927594a6rbb * SetEnvIf name regex var ...
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb *
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * where name is either a HTTP request header name, or one of the
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * special values (see below). 'name' may be a regex when it is used
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * to specify an HTTP request header name. The 'value' of the header
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb & (or the value of the special value from below) are compared against
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * the regex argument. If this is a simple string, a simple sub-string
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * match is performed. Otherwise, a request expression match is
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * done. If the value matches the string or regular expression, the
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * environment variables listed as var ... are set. Each var can
f0f24fc0cd692d203ba4754dc215581d7a88b5c7rbb * be in one of three formats: var, which sets the named variable
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * (the value value "1"); var=value, which sets the variable to
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * the given value; or !var, which unsets the variable is it has
c1a9af42c178bed7efa0a6bb7f45f46ffb269719rbb * been previously set.
*
* Normally the strings are compared with regard to case. To ignore
* case, use the directive SetEnvIfNoCase instead.
*
* Special values for 'name' are:
*
* server_addr IP address of interface on which request arrived
* (analogous to SERVER_ADDR set in ap_add_common_vars())
* remote_host Remote host name (if available)
* remote_addr Remote IP address
* request_method Request method (GET, POST, etc)
* request_uri Requested URI
*
* Examples:
*
* To set the environment variable LOCALHOST if the client is the local
* machine:
*
* SetEnvIf remote_addr 127.0.0.1 LOCALHOST
*
* To set LOCAL if the client is the local host, or within our company's
* domain (192.168.10):
*
* SetEnvIf remote_addr 192.168.10. LOCAL
* SetEnvIf remote_addr 127.0.0.1 LOCALHOST
*
* This could be written as:
*
* SetEnvIf remote_addr (127.0.0.1|192.168.10.) LOCAL
*
* To set HAVE_TS if the client request contains any header beginning
* with "TS" with a value beginning with a lower case alphabet:
*
* SetEnvIf ^TS* ^[a-z].* HAVE_TS
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_strmatch.h"
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_protocol.h"
#include "mod_ssl.h"
enum special {
SPECIAL_NOT,
SPECIAL_REMOTE_ADDR,
SPECIAL_REMOTE_HOST,
SPECIAL_REQUEST_URI,
SPECIAL_REQUEST_METHOD,
SPECIAL_REQUEST_PROTOCOL,
SPECIAL_SERVER_ADDR,
SPECIAL_OID_VALUE
};
typedef struct {
char *name; /* header name */
ap_regex_t *pnamereg; /* compiled header name regex */
char *regex; /* regex to match against */
ap_regex_t *preg; /* compiled regex */
const apr_strmatch_pattern *pattern; /* non-regex pattern to match */
ap_expr_info_t *expr; /* parsed expression */
apr_table_t *features; /* env vars to set (or unset) */
enum special special_type; /* is it a "special" header ? */
int icase; /* ignoring case? */
} sei_entry;
typedef struct {
apr_array_header_t *conditionals;
} sei_cfg_rec;
module AP_MODULE_DECLARE_DATA setenvif_module;
static APR_OPTIONAL_FN_TYPE(ssl_ext_list) *ssl_ext_list_func = NULL;
/*
* These routines, the create- and merge-config functions, are called
* for both the server-wide and the per-directory contexts. This is
* because the different definitions are used at different times; the
* server-wide ones are used in the post-read-request phase, and the
* per-directory ones are used during the header-parse phase (after
* the URI has been mapped to a file and we have anything from the
* .htaccess file and <Directory> and <Files> containers).
*/
static void *create_setenvif_config(apr_pool_t *p)
{
sei_cfg_rec *new = (sei_cfg_rec *) apr_palloc(p, sizeof(sei_cfg_rec));
new->conditionals = apr_array_make(p, 20, sizeof(sei_entry));
return (void *) new;
}
static void *create_setenvif_config_svr(apr_pool_t *p, server_rec *dummy)
{
return create_setenvif_config(p);
}
static void *create_setenvif_config_dir(apr_pool_t *p, char *dummy)
{
return create_setenvif_config(p);
}
static void *merge_setenvif_config(apr_pool_t *p, void *basev, void *overridesv)
{
sei_cfg_rec *a = apr_pcalloc(p, sizeof(sei_cfg_rec));
sei_cfg_rec *base = basev, *overrides = overridesv;
a->conditionals = apr_array_append(p, base->conditionals,
overrides->conditionals);
return a;
}
/*
* any non-NULL magic constant will do... used to indicate if AP_REG_ICASE should
* be used
*/
#define ICASE_MAGIC ((void *)(&setenvif_module))
#define SEI_MAGIC_HEIRLOOM "setenvif-phase-flag"
static int is_header_regex(apr_pool_t *p, const char* name)
{
/* If a Header name contains characters other than:
* -,_,[A-Z\, [a-z] and [0-9].
* assume the header name is a regular expression.
*/
ap_regex_t *preg = ap_pregcomp(p, "^[-A-Za-z0-9_]*$",
(AP_REG_EXTENDED | AP_REG_NOSUB ));
ap_assert(preg != NULL);
if (ap_regexec(preg, name, 0, NULL, 0)) {
return 1;
}
return 0;
}
/* If the input string does not take advantage of regular
* expression metacharacters, return a pointer to an equivalent
* string that can be searched using apr_strmatch(). (The
* returned string will often be the input string. But if
* the input string contains escaped characters, the returned
* string will be a copy with the escapes removed.)
*/
static const char *non_regex_pattern(apr_pool_t *p, const char *s)
{
const char *src = s;
int escapes_found = 0;
int in_escape = 0;
while (*src) {
switch (*src) {
case '^':
case '.':
case '$':
case '|':
case '(':
case ')':
case '[':
case ']':
case '*':
case '+':
case '?':
case '{':
case '}':
if (!in_escape) {
return NULL;
}
in_escape = 0;
break;
case '\\':
if (!in_escape) {
in_escape = 1;
escapes_found = 1;
}
else {
in_escape = 0;
}
break;
default:
if (in_escape) {
return NULL;
}
break;
}
src++;
}
if (!escapes_found) {
return s;
}
else {
char *unescaped = (char *)apr_palloc(p, src - s + 1);
char *dst = unescaped;
src = s;
do {
if (*src == '\\') {
src++;
}
} while ((*dst++ = *src++));
return unescaped;
}
}
static const char *add_envvars(cmd_parms *cmd, const char *args, sei_entry *new)
{
const char *feature;
int beenhere = 0;
char *var;
for ( ; ; ) {
feature = ap_getword_conf(cmd->pool, &args);
if (!*feature) {
break;
}
beenhere++;
var = ap_getword(cmd->pool, &feature, '=');
if (*feature) {
apr_table_setn(new->features, var, feature);
}
else if (*var == '!') {
apr_table_setn(new->features, var + 1, "!");
}
else {
apr_table_setn(new->features, var, "1");
}
}
if (!beenhere) {
return apr_pstrcat(cmd->pool, "Missing envariable expression for ",
cmd->cmd->name, NULL);
}
return NULL;
}
static const char *add_setenvif_core(cmd_parms *cmd, void *mconfig,
char *fname, const char *args)
{
char *regex;
const char *simple_pattern;
sei_cfg_rec *sconf;
sei_entry *new;
sei_entry *entries;
int i;
int icase;
/*
* Determine from our context into which record to put the entry.
* cmd->path == NULL means we're in server-wide context; otherwise,
* we're dealing with a per-directory setting.
*/
sconf = (cmd->path != NULL)
? (sei_cfg_rec *) mconfig
: (sei_cfg_rec *) ap_get_module_config(cmd->server->module_config,
&setenvif_module);
entries = (sei_entry *) sconf->conditionals->elts;
/* get regex */
regex = ap_getword_conf(cmd->pool, &args);
if (!*regex) {
return apr_pstrcat(cmd->pool, "Missing regular expression for ",
cmd->cmd->name, NULL);
}
/*
* If we've already got a sei_entry with the same name we want to
* just copy the name pointer... so that later on we can compare
* two header names just by comparing the pointers.
*/
for (i = 0; i < sconf->conditionals->nelts; ++i) {
new = &entries[i];
if (!strcasecmp(new->name, fname)) {
fname = new->name;
break;
}
}
/* if the last entry has an identical headername and regex then
* merge with it
*/
i = sconf->conditionals->nelts - 1;
icase = cmd->info == ICASE_MAGIC;
if (i < 0
|| entries[i].name != fname
|| entries[i].icase != icase
|| strcmp(entries[i].regex, regex)) {
/* no match, create a new entry */
new = apr_array_push(sconf->conditionals);
new->name = fname;
new->regex = regex;
new->icase = icase;
if ((simple_pattern = non_regex_pattern(cmd->pool, regex))) {
new->pattern = apr_strmatch_precompile(cmd->pool,
simple_pattern, !icase);
if (new->pattern == NULL) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
" pattern could not be compiled.", NULL);
}
new->preg = NULL;
}
else {
new->preg = ap_pregcomp(cmd->pool, regex,
(AP_REG_EXTENDED | (icase ? AP_REG_ICASE : 0)));
if (new->preg == NULL) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
" regex could not be compiled.", NULL);
}
new->pattern = NULL;
}
new->features = apr_table_make(cmd->pool, 2);
if (!strcasecmp(fname, "remote_addr")) {
new->special_type = SPECIAL_REMOTE_ADDR;
}
else if (!strcasecmp(fname, "remote_host")) {
new->special_type = SPECIAL_REMOTE_HOST;
}
else if (!strcasecmp(fname, "request_uri")) {
new->special_type = SPECIAL_REQUEST_URI;
}
else if (!strcasecmp(fname, "request_method")) {
new->special_type = SPECIAL_REQUEST_METHOD;
}
else if (!strcasecmp(fname, "request_protocol")) {
new->special_type = SPECIAL_REQUEST_PROTOCOL;
}
else if (!strcasecmp(fname, "server_addr")) {
new->special_type = SPECIAL_SERVER_ADDR;
}
else if (!strncasecmp(fname, "oid(",4)) {
ap_regmatch_t match[AP_MAX_REG_MATCH];
new->special_type = SPECIAL_OID_VALUE;
/* Syntax check and extraction of the OID as a regex: */
new->pnamereg = ap_pregcomp(cmd->temp_pool,
"^oid\\(\"?([0-9.]+)\"?\\)$",
(AP_REG_EXTENDED /* | AP_REG_NOSUB */
| AP_REG_ICASE));
/* this can never happen, as long as pcre works:
if (new->pnamereg == NULL)
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"OID regex could not be compiled.", NULL);
*/
if (ap_regexec(new->pnamereg, fname, AP_MAX_REG_MATCH, match, 0) == AP_REG_NOMATCH) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"OID syntax is: oid(\"1.2.3.4.5\"); error in: ",
fname, NULL);
}
new->pnamereg = NULL;
/* The name field is used for the stripped oid string */
new->name = fname = apr_pstrdup(cmd->pool, fname+match[1].rm_so);
fname[match[1].rm_eo - match[1].rm_so] = '\0';
}
else {
new->special_type = SPECIAL_NOT;
/* Handle fname as a regular expression.
* If fname a simple header string, identify as such
* (new->pnamereg = NULL) to avoid the overhead of searching
* through headers_in for a regex match.
*/
if (is_header_regex(cmd->temp_pool, fname)) {
new->pnamereg = ap_pregcomp(cmd->pool, fname,
(AP_REG_EXTENDED | AP_REG_NOSUB
| (icase ? AP_REG_ICASE : 0)));
if (new->pnamereg == NULL)
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"Header name regex could not be "
"compiled.", NULL);
}
else {
new->pnamereg = NULL;
}
}
}
else {
new = &entries[i];
}
return add_envvars(cmd, args, new);
}
static const char *add_setenvif(cmd_parms *cmd, void *mconfig,
const char *args)
{
char *fname;
/* get header name */
fname = ap_getword_conf(cmd->pool, &args);
if (!*fname) {
return apr_pstrcat(cmd->pool, "Missing header-field name for ",
cmd->cmd->name, NULL);
}
return add_setenvif_core(cmd, mconfig, fname, args);
}
static const char *add_setenvifexpr(cmd_parms *cmd, void *mconfig,
const char *args)
{
char *expr;
sei_cfg_rec *sconf;
sei_entry *new;
sei_entry *entries;
const char *err;
/*
* Determine from our context into which record to put the entry.
* cmd->path == NULL means we're in server-wide context; otherwise,
* we're dealing with a per-directory setting.
*/
sconf = (cmd->path != NULL)
? (sei_cfg_rec *) mconfig
: (sei_cfg_rec *) ap_get_module_config(cmd->server->module_config,
&setenvif_module);
entries = (sei_entry *) sconf->conditionals->elts;
/* get expr */
expr = ap_getword_conf(cmd->pool, &args);
if (!*expr) {
return apr_pstrcat(cmd->pool, "Missing expression for ",
cmd->cmd->name, NULL);
}
new = apr_array_push(sconf->conditionals);
new->features = apr_table_make(cmd->pool, 2);
new->name = NULL;
new->regex = NULL;
new->pattern = NULL;
new->preg = NULL;
new->expr = ap_expr_parse_cmd(cmd, expr, &err, NULL);
if (err)
return apr_psprintf(cmd->pool, "Could not parse expression \"%s\": %s",
expr, err);
new->expr->module_index = setenvif_module.module_index;
return add_envvars(cmd, args, new);
}
/*
* This routine handles the BrowserMatch* directives. It simply turns around
* and feeds them, with the appropriate embellishments, to the general-purpose
* command handler.
*/
static const char *add_browser(cmd_parms *cmd, void *mconfig, const char *args)
{
return add_setenvif_core(cmd, mconfig, "User-Agent", args);
}
static const command_rec setenvif_module_cmds[] =
{
AP_INIT_RAW_ARGS("SetEnvIf", add_setenvif, NULL, OR_FILEINFO,
"A header-name, regex and a list of variables."),
AP_INIT_RAW_ARGS("SetEnvIfNoCase", add_setenvif, ICASE_MAGIC, OR_FILEINFO,
"a header-name, regex and a list of variables."),
AP_INIT_RAW_ARGS("SetEnvIfExpr", add_setenvifexpr, NULL, OR_FILEINFO,
"an expression and a list of variables."),
AP_INIT_RAW_ARGS("BrowserMatch", add_browser, NULL, OR_FILEINFO,
"A browser regex and a list of variables."),
AP_INIT_RAW_ARGS("BrowserMatchNoCase", add_browser, ICASE_MAGIC,
OR_FILEINFO,
"A browser regex and a list of variables."),
{ NULL },
};
/*
* This routine gets called at two different points in request processing:
* once before the URI has been translated (during the post-read-request
* phase) and once after (during the header-parse phase). We use different
* config records for the two different calls to reduce overhead (by not
* re-doing the server-wide settings during directory processing), and
* signal which call it is by having the earlier one pass a flag to the
* later one.
*/
static int match_headers(request_rec *r)
{
sei_cfg_rec *sconf;
sei_entry *entries;
const apr_table_entry_t *elts;
const char *val, *err;
apr_size_t val_len = 0;
int i, j;
char *last_name;
ap_regmatch_t regm[AP_MAX_REG_MATCH];
if (!ap_get_module_config(r->request_config, &setenvif_module)) {
ap_set_module_config(r->request_config, &setenvif_module,
SEI_MAGIC_HEIRLOOM);
sconf = (sei_cfg_rec *) ap_get_module_config(r->server->module_config,
&setenvif_module);
}
else {
sconf = (sei_cfg_rec *) ap_get_module_config(r->per_dir_config,
&setenvif_module);
}
entries = (sei_entry *) sconf->conditionals->elts;
last_name = NULL;
val = NULL;
for (i = 0; i < sconf->conditionals->nelts; ++i) {
sei_entry *b = &entries[i];
if (!b->expr) {
/* Optimize the case where a bunch of directives in a row use the
* same header. Remember we don't need to strcmp the two header
* names because we made sure the pointers were equal during
* configuration.
* In the case of SPECIAL_OID_VALUE values, each oid string is
* dynamically allocated, thus there are no duplicates.
*/
if (b->name != last_name) {
last_name = b->name;
switch (b->special_type) {
case SPECIAL_REMOTE_ADDR:
val = r->connection->remote_ip;
break;
case SPECIAL_SERVER_ADDR:
val = r->connection->local_ip;
break;
case SPECIAL_REMOTE_HOST:
val = ap_get_remote_host(r->connection, r->per_dir_config,
REMOTE_NAME, NULL);
break;
case SPECIAL_REQUEST_URI:
val = r->uri;
break;
case SPECIAL_REQUEST_METHOD:
val = r->method;
break;
case SPECIAL_REQUEST_PROTOCOL:
val = r->protocol;
break;
case SPECIAL_OID_VALUE:
/* If mod_ssl is not loaded, the accessor function is NULL */
if (ssl_ext_list_func != NULL)
{
apr_array_header_t *oid_array;
char **oid_value;
int j, len = 0;
char *retval = NULL;
/* The given oid can occur multiple times. Concatenate the values */
if ((oid_array = ssl_ext_list_func(r->pool, r->connection, 1,
b->name)) != NULL) {
oid_value = (char **) oid_array->elts;
/* pass 1: determine the size of the string */
for (len=j=0; j < oid_array->nelts; j++) {
len += strlen(oid_value[j]) + 1; /* +1 for ',' or terminating NIL */
}
retval = apr_palloc(r->pool, len);
/* pass 2: fill the string */
for (j=0; j < oid_array->nelts; j++) {
if (j > 0) {
strcat(retval, ",");
}
strcat(retval, oid_value[j]);
}
}
val = retval;
}
break;
case SPECIAL_NOT:
if (b->pnamereg) {
/* Matching headers_in against a regex. Iterate through
* the headers_in until we find a match or run out of
* headers.
*/
const apr_array_header_t
*arr = apr_table_elts(r->headers_in);
elts = (const apr_table_entry_t *) arr->elts;
val = NULL;
for (j = 0; j < arr->nelts; ++j) {
if (!ap_regexec(b->pnamereg, elts[j].key, 0, NULL, 0)) {
val = elts[j].val;
}
}
}
else {
/* Not matching against a regex */
val = apr_table_get(r->headers_in, b->name);
if (val == NULL) {
val = apr_table_get(r->subprocess_env, b->name);
}
}
}
val_len = val ? strlen(val) : 0;
}
}
/*
* A NULL value indicates that the header field or special entity
* wasn't present or is undefined. Represent that as an empty string
* so that REs like "^$" will work and allow envariable setting
* based on missing or empty field. This is also necessary to make
* ap_pregsub work after evaluating an ap_expr_t which does set the
* regexp backref data.
*/
if (val == NULL) {
val = "";
val_len = 0;
}
if ((b->pattern && apr_strmatch(b->pattern, val, val_len)) ||
(b->preg && !ap_regexec(b->preg, val, AP_MAX_REG_MATCH, regm, 0)) ||
(b->expr && ap_expr_exec_re(r, b->expr, AP_MAX_REG_MATCH, regm, &val, &err) > 0))
{
const apr_array_header_t *arr = apr_table_elts(b->features);
elts = (const apr_table_entry_t *) arr->elts;
for (j = 0; j < arr->nelts; ++j) {
if (*(elts[j].val) == '!') {
apr_table_unset(r->subprocess_env, elts[j].key);
}
else {
if (!b->pattern) {
char *replaced = ap_pregsub(r->pool, elts[j].val, val,
AP_MAX_REG_MATCH, regm);
if (replaced) {
apr_table_setn(r->subprocess_env, elts[j].key,
replaced);
}
}
else {
apr_table_setn(r->subprocess_env, elts[j].key,
elts[j].val);
}
}
}
if (APLOGrtrace2(r)) {
ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r,
"Setting envvar(s): %s",
apr_array_pstrcat(r->pool, arr, ' '));
}
}
}
return DECLINED;
}
static int setenvif_post_config(apr_pool_t *pconf, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s)
{
ssl_ext_list_func = APR_RETRIEVE_OPTIONAL_FN(ssl_ext_list);
return OK;
}
static void register_hooks(apr_pool_t *p)
{
ap_hook_header_parser(match_headers, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_post_read_request(match_headers, NULL, NULL, APR_HOOK_MIDDLE);
/* post config handling */
ap_hook_post_config(setenvif_post_config, NULL, NULL, APR_HOOK_MIDDLE);
}
AP_DECLARE_MODULE(setenvif) =
{
STANDARD20_MODULE_STUFF,
create_setenvif_config_dir, /* dir config creater */
merge_setenvif_config, /* dir merger --- default is to override */
create_setenvif_config_svr, /* server config */
merge_setenvif_config, /* merge server configs */
setenvif_module_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};