| /* Licensed to the Apache Software Foundation (ASF) under one or more | |
| * contributor license agreements. See the NOTICE file distributed with | |
| * this work for additional information regarding copyright ownership. | |
| * The ASF licenses this file to You under the Apache License, Version 2.0 | |
| * (the "License"); you may not use this file except in compliance with | |
| * the License. You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, | |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| * See the License for the specific language governing permissions and | |
| * limitations under the License. | |
| */ | |
| /* | |
| * http_alias.c: Stuff for dealing with directory aliases | |
| * | |
| * Original by Rob McCool, rewritten in succession by David Robinson | |
| * and rst. | |
| * | |
| */ | |
| #include "apr_strings.h" | |
| #include "apr_lib.h" | |
| #define APR_WANT_STRFUNC | |
| #include "apr_want.h" | |
| #include "ap_config.h" | |
| #include "httpd.h" | |
| #include "http_core.h" | |
| #include "http_config.h" | |
| #include "http_request.h" | |
| #include "http_log.h" | |
| #include "ap_expr.h" | |
| #define ALIAS_FLAG_DEFAULT -1 | |
| #define ALIAS_FLAG_OFF 0 | |
| #define ALIAS_FLAG_ON 1 | |
| #define ALIAS_PRESERVE_PATH_DEFAULT 0 | |
| typedef struct { | |
| const char *real; | |
| const char *fake; | |
| char *handler; | |
| ap_regex_t *regexp; | |
| int redir_status; /* 301, 302, 303, 410, etc */ | |
| } alias_entry; | |
| typedef struct { | |
| apr_array_header_t *aliases; | |
| apr_array_header_t *redirects; | |
| } alias_server_conf; | |
| typedef struct { | |
| unsigned int alias_set:1; | |
| unsigned int redirect_set:1; | |
| apr_array_header_t *redirects; | |
| const ap_expr_info_t *alias; | |
| const char *alias_fake; | |
| char *handler; | |
| const ap_expr_info_t *redirect; | |
| int redirect_status; /* 301, 302, 303, 410, etc */ | |
| int allow_relative; /* skip ap_construct_url() */ | |
| int alias_preserve_path; /* map full path */ | |
| } alias_dir_conf; | |
| module AP_MODULE_DECLARE_DATA alias_module; | |
| static char magic_error_value; | |
| #define PREGSUB_ERROR (&magic_error_value) | |
| static void *create_alias_config(apr_pool_t *p, server_rec *s) | |
| { | |
| alias_server_conf *a = | |
| (alias_server_conf *) apr_pcalloc(p, sizeof(alias_server_conf)); | |
| a->aliases = apr_array_make(p, 20, sizeof(alias_entry)); | |
| a->redirects = apr_array_make(p, 20, sizeof(alias_entry)); | |
| return a; | |
| } | |
| static void *create_alias_dir_config(apr_pool_t *p, char *d) | |
| { | |
| alias_dir_conf *a = | |
| (alias_dir_conf *) apr_pcalloc(p, sizeof(alias_dir_conf)); | |
| a->redirects = apr_array_make(p, 2, sizeof(alias_entry)); | |
| a->allow_relative = ALIAS_FLAG_DEFAULT; | |
| a->alias_preserve_path = ALIAS_FLAG_DEFAULT; | |
| return a; | |
| } | |
| static void *merge_alias_config(apr_pool_t *p, void *basev, void *overridesv) | |
| { | |
| alias_server_conf *a = | |
| (alias_server_conf *) apr_pcalloc(p, sizeof(alias_server_conf)); | |
| alias_server_conf *base = (alias_server_conf *) basev; | |
| alias_server_conf *overrides = (alias_server_conf *) overridesv; | |
| a->aliases = apr_array_append(p, overrides->aliases, base->aliases); | |
| a->redirects = apr_array_append(p, overrides->redirects, base->redirects); | |
| return a; | |
| } | |
| static void *merge_alias_dir_config(apr_pool_t *p, void *basev, void *overridesv) | |
| { | |
| alias_dir_conf *a = | |
| (alias_dir_conf *) apr_pcalloc(p, sizeof(alias_dir_conf)); | |
| alias_dir_conf *base = (alias_dir_conf *) basev; | |
| alias_dir_conf *overrides = (alias_dir_conf *) overridesv; | |
| a->redirects = apr_array_append(p, overrides->redirects, base->redirects); | |
| a->alias = (overrides->alias_set == 0) ? base->alias : overrides->alias; | |
| a->alias_fake = (overrides->alias_set == 0) ? base->alias_fake : overrides->alias_fake; | |
| a->handler = (overrides->alias_set == 0) ? base->handler : overrides->handler; | |
| a->alias_set = overrides->alias_set || base->alias_set; | |
| a->redirect = (overrides->redirect_set == 0) ? base->redirect : overrides->redirect; | |
| a->redirect_status = (overrides->redirect_set == 0) ? base->redirect_status : overrides->redirect_status; | |
| a->redirect_set = overrides->redirect_set || base->redirect_set; | |
| a->allow_relative = (overrides->allow_relative != ALIAS_FLAG_DEFAULT) | |
| ? overrides->allow_relative | |
| : base->allow_relative; | |
| a->alias_preserve_path = (overrides->alias_preserve_path != ALIAS_FLAG_DEFAULT) | |
| ? overrides->alias_preserve_path | |
| : base->alias_preserve_path; | |
| return a; | |
| } | |
| /* need prototype for overlap check */ | |
| static int alias_matches(const char *uri, const char *alias_fakename); | |
| static const char *add_alias_internal(cmd_parms *cmd, void *dummy, | |
| const char *fake, const char *real, | |
| int use_regex) | |
| { | |
| server_rec *s = cmd->server; | |
| alias_server_conf *conf = ap_get_module_config(s->module_config, | |
| &alias_module); | |
| alias_entry *new = apr_array_push(conf->aliases); | |
| alias_entry *entries = (alias_entry *)conf->aliases->elts; | |
| int i; | |
| /* XXX: real can NOT be relative to DocumentRoot here... compat bug. */ | |
| const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT); | |
| if (err != NULL) { | |
| return err; | |
| } | |
| if (use_regex) { | |
| new->regexp = ap_pregcomp(cmd->pool, fake, AP_REG_EXTENDED); | |
| if (new->regexp == NULL) | |
| return "Regular expression could not be compiled."; | |
| new->real = real; | |
| } | |
| else { | |
| /* XXX This may be optimized, but we must know that new->real | |
| * exists. If so, we can dir merge later, trusing new->real | |
| * and just canonicalizing the remainder. Not till I finish | |
| * cleaning out the old ap_canonical stuff first. | |
| */ | |
| new->real = real; | |
| } | |
| new->fake = fake; | |
| new->handler = cmd->info; | |
| /* check for overlapping (Script)Alias directives | |
| * and throw a warning if found one | |
| */ | |
| if (!use_regex) { | |
| for (i = 0; i < conf->aliases->nelts - 1; ++i) { | |
| alias_entry *alias = &entries[i]; | |
| if ( (!alias->regexp && alias_matches(fake, alias->fake) > 0) | |
| || (alias->regexp && !ap_regexec(alias->regexp, fake, 0, NULL, 0))) { | |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00671) | |
| "The %s directive in %s at line %d will probably " | |
| "never match because it overlaps an earlier " | |
| "%sAlias%s.", | |
| cmd->cmd->name, cmd->directive->filename, | |
| cmd->directive->line_num, | |
| alias->handler ? "Script" : "", | |
| alias->regexp ? "Match" : ""); | |
| break; /* one warning per alias should be sufficient */ | |
| } | |
| } | |
| } | |
| return NULL; | |
| } | |
| static const char *add_alias(cmd_parms *cmd, void *dummy, const char *fake, | |
| const char *real) | |
| { | |
| if (real) { | |
| return add_alias_internal(cmd, dummy, fake, real, 0); | |
| } | |
| else { | |
| alias_dir_conf *dirconf = (alias_dir_conf *) dummy; | |
| const char *err = ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_FILES); | |
| if (err != NULL) { | |
| return err; | |
| } | |
| if (!cmd->path) { | |
| return "Alias must have two arguments when used globally"; | |
| } | |
| dirconf->alias = | |
| ap_expr_parse_cmd(cmd, fake, AP_EXPR_FLAG_STRING_RESULT, | |
| &err, NULL); | |
| if (err) { | |
| return apr_pstrcat(cmd->temp_pool, | |
| "Cannot parse alias expression '", fake, "': ", err, | |
| NULL); | |
| } | |
| dirconf->alias_fake = cmd->path; | |
| dirconf->handler = cmd->info; | |
| dirconf->alias_set = 1; | |
| return NULL; | |
| } | |
| } | |
| static const char *add_alias_regex(cmd_parms *cmd, void *dummy, | |
| const char *fake, const char *real) | |
| { | |
| return add_alias_internal(cmd, dummy, fake, real, 1); | |
| } | |
| static const char *add_redirect_internal(cmd_parms *cmd, | |
| alias_dir_conf *dirconf, | |
| const char *arg1, const char *arg2, | |
| const char *arg3, int use_regex) | |
| { | |
| alias_entry *new; | |
| server_rec *s = cmd->server; | |
| alias_server_conf *serverconf = ap_get_module_config(s->module_config, | |
| &alias_module); | |
| int status = (int) (long) cmd->info; | |
| int grokarg1 = 1; | |
| ap_regex_t *regex = NULL; | |
| const char *fake = arg2; | |
| const char *url = arg3; | |
| /* | |
| * Logic flow: | |
| * Go ahead and try to grok the 1st arg, in case it is a | |
| * Redirect status. Now if we have 3 args, we expect that | |
| * we were able to understand that 1st argument (it's something | |
| * we expected, so if not, then we bail | |
| */ | |
| if (!strcasecmp(arg1, "permanent")) | |
| status = HTTP_MOVED_PERMANENTLY; | |
| else if (!strcasecmp(arg1, "temp")) | |
| status = HTTP_MOVED_TEMPORARILY; | |
| else if (!strcasecmp(arg1, "seeother")) | |
| status = HTTP_SEE_OTHER; | |
| else if (!strcasecmp(arg1, "gone")) { | |
| status = HTTP_GONE; | |
| grokarg1 = -1; | |
| } | |
| else if (apr_isdigit(*arg1)) { | |
| status = atoi(arg1); | |
| if (!ap_is_HTTP_REDIRECT(status)) { | |
| grokarg1 = -1; | |
| } | |
| } | |
| else { | |
| grokarg1 = 0; | |
| } | |
| if (arg3 && !grokarg1) | |
| return "Redirect: invalid first argument (of three)"; | |
| /* | |
| * if we have the 2nd arg and we understand the 1st one as a redirect | |
| * status (3xx, but not things like 404 /robots.txt), or if we have the | |
| * 1st arg but don't understand it, we use the expression syntax assuming | |
| * a path from the location. | |
| * | |
| * if we understand the first arg but have no second arg, we are dealing | |
| * with a status like "GONE" or a non-redirect status (e.g. 404, 503). | |
| */ | |
| if (!cmd->path) { | |
| /* <Location> context only for now */ | |
| ; | |
| } | |
| else if ((grokarg1 > 0 && arg2 && !arg3) || (!grokarg1 && !arg2)) { | |
| const char *expr_err = NULL; | |
| url = grokarg1 ? arg2 : arg1; | |
| dirconf->redirect = | |
| ap_expr_parse_cmd(cmd, url, AP_EXPR_FLAG_STRING_RESULT, | |
| &expr_err, NULL); | |
| if (expr_err) { | |
| return apr_pstrcat(cmd->temp_pool, | |
| "Cannot parse redirect expression '", url, "': ", expr_err, | |
| NULL); | |
| } | |
| dirconf->redirect_status = status; | |
| dirconf->redirect_set = 1; | |
| return NULL; | |
| } | |
| else if (grokarg1 < 0 && !arg2) { | |
| dirconf->redirect_status = status; | |
| dirconf->redirect_set = 1; | |
| return NULL; | |
| } | |
| /* | |
| * if we don't have the 3rd arg and we didn't understand the 1st | |
| * one, then assume URL-path URL. This also handles case, eg, GONE | |
| * we even though we don't have a 3rd arg, we did understand the 1st | |
| * one, so we don't want to re-arrange | |
| */ | |
| if (!arg3 && !grokarg1) { | |
| fake = arg1; | |
| url = arg2; | |
| } | |
| if (use_regex) { | |
| regex = ap_pregcomp(cmd->pool, fake, AP_REG_EXTENDED); | |
| if (regex == NULL) | |
| return "Regular expression could not be compiled."; | |
| } | |
| if (ap_is_HTTP_REDIRECT(status)) { | |
| if (!url) | |
| return "URL to redirect to is missing"; | |
| /* PR#35314: we can allow path components here; | |
| * they get correctly resolved to full URLs. | |
| */ | |
| if (!use_regex && !ap_is_url(url) && (url[0] != '/')) | |
| return "Redirect to non-URL"; | |
| } | |
| else { | |
| if (url) | |
| return "Redirect URL not valid for this status"; | |
| } | |
| if (cmd->path) | |
| new = apr_array_push(dirconf->redirects); | |
| else | |
| new = apr_array_push(serverconf->redirects); | |
| new->fake = fake; | |
| new->real = url; | |
| new->regexp = regex; | |
| new->redir_status = status; | |
| return NULL; | |
| } | |
| static const char *add_redirect(cmd_parms *cmd, void *dirconf, | |
| const char *arg1, const char *arg2, | |
| const char *arg3) | |
| { | |
| return add_redirect_internal(cmd, dirconf, arg1, arg2, arg3, 0); | |
| } | |
| static const char *add_redirect2(cmd_parms *cmd, void *dirconf, | |
| const char *arg1, const char *arg2) | |
| { | |
| return add_redirect_internal(cmd, dirconf, arg1, arg2, NULL, 0); | |
| } | |
| static const char *add_redirect_regex(cmd_parms *cmd, void *dirconf, | |
| const char *arg1, const char *arg2, | |
| const char *arg3) | |
| { | |
| return add_redirect_internal(cmd, dirconf, arg1, arg2, arg3, 1); | |
| } | |
| static int alias_matches(const char *uri, const char *alias_fakename) | |
| { | |
| const char *aliasp = alias_fakename, *urip = uri; | |
| while (*aliasp) { | |
| if (*aliasp == '/') { | |
| /* any number of '/' in the alias matches any number in | |
| * the supplied URI, but there must be at least one... | |
| */ | |
| if (*urip != '/') | |
| return 0; | |
| do { | |
| ++aliasp; | |
| } while (*aliasp == '/'); | |
| do { | |
| ++urip; | |
| } while (*urip == '/'); | |
| } | |
| else { | |
| /* Other characters are compared literally */ | |
| if (*urip++ != *aliasp++) | |
| return 0; | |
| } | |
| } | |
| /* Check last alias path component matched all the way */ | |
| if (aliasp[-1] != '/' && *urip != '\0' && *urip != '/') | |
| return 0; | |
| /* Return number of characters from URI which matched (may be | |
| * greater than length of alias, since we may have matched | |
| * doubled slashes) | |
| */ | |
| return urip - uri; | |
| } | |
| static char *try_alias(request_rec *r) | |
| { | |
| alias_dir_conf *dirconf = | |
| (alias_dir_conf *) ap_get_module_config(r->per_dir_config, &alias_module); | |
| if (dirconf->alias) { | |
| const char *err = NULL; | |
| char *found = apr_pstrdup(r->pool, | |
| ap_expr_str_exec(r, dirconf->alias, &err)); | |
| if (err) { | |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02825) | |
| "Can't evaluate alias expression: %s", err); | |
| return PREGSUB_ERROR; | |
| } | |
| if (dirconf->alias_fake && dirconf->alias_preserve_path == ALIAS_FLAG_ON) { | |
| int l; | |
| l = alias_matches(r->uri, dirconf->alias_fake); | |
| if (l > 0) { | |
| ap_set_context_info(r, dirconf->alias_fake, found); | |
| found = apr_pstrcat(r->pool, found, r->uri + l, NULL); | |
| } | |
| } | |
| if (dirconf->handler) { /* Set handler, and leave a note for mod_cgi */ | |
| r->handler = dirconf->handler; | |
| apr_table_setn(r->notes, "alias-forced-type", r->handler); | |
| } | |
| /* XXX This is as SLOW as can be, next step, we optimize | |
| * and merge to whatever part of the found path was already | |
| * canonicalized. After I finish eliminating os canonical. | |
| * Better fail test for ap_server_root_relative needed here. | |
| */ | |
| found = ap_server_root_relative(r->pool, found); | |
| return found; | |
| } | |
| return NULL; | |
| } | |
| static char *try_redirect(request_rec *r, int *status) | |
| { | |
| alias_dir_conf *dirconf = | |
| (alias_dir_conf *) ap_get_module_config(r->per_dir_config, &alias_module); | |
| if (dirconf->redirect_set) { | |
| apr_uri_t uri; | |
| const char *err = NULL; | |
| char *found = ""; | |
| if (dirconf->redirect) { | |
| found = apr_pstrdup(r->pool, | |
| ap_expr_str_exec(r, dirconf->redirect, &err)); | |
| if (err) { | |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02826) | |
| "Can't evaluate redirect expression: %s", err); | |
| return PREGSUB_ERROR; | |
| } | |
| apr_uri_parse(r->pool, found, &uri); | |
| /* Do not escape the query string or fragment. */ | |
| found = apr_uri_unparse(r->pool, &uri, APR_URI_UNP_OMITQUERY); | |
| found = ap_escape_uri(r->pool, found); | |
| if (uri.query) { | |
| found = apr_pstrcat(r->pool, found, "?", uri.query, NULL); | |
| } | |
| if (uri.fragment) { | |
| found = apr_pstrcat(r->pool, found, "#", uri.fragment, NULL); | |
| } | |
| } | |
| *status = dirconf->redirect_status; | |
| return found; | |
| } | |
| return NULL; | |
| } | |
| static char *try_alias_list(request_rec *r, apr_array_header_t *aliases, | |
| int is_redir, int *status) | |
| { | |
| alias_entry *entries = (alias_entry *) aliases->elts; | |
| ap_regmatch_t regm[AP_MAX_REG_MATCH]; | |
| char *found = NULL; | |
| int i; | |
| for (i = 0; i < aliases->nelts; ++i) { | |
| alias_entry *alias = &entries[i]; | |
| int l; | |
| if (alias->regexp) { | |
| if (!ap_regexec(alias->regexp, r->uri, AP_MAX_REG_MATCH, regm, 0)) { | |
| if (alias->real) { | |
| found = ap_pregsub(r->pool, alias->real, r->uri, | |
| AP_MAX_REG_MATCH, regm); | |
| if (found) { | |
| if (is_redir) { | |
| apr_uri_t uri; | |
| apr_uri_parse(r->pool, found, &uri); | |
| /* Do not escape the query string or fragment. */ | |
| found = apr_uri_unparse(r->pool, &uri, | |
| APR_URI_UNP_OMITQUERY); | |
| found = ap_escape_uri(r->pool, found); | |
| if (uri.query) { | |
| found = apr_pstrcat(r->pool, found, "?", | |
| uri.query, NULL); | |
| } | |
| if (uri.fragment) { | |
| found = apr_pstrcat(r->pool, found, "#", | |
| uri.fragment, NULL); | |
| } | |
| } | |
| } | |
| else { | |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00672) | |
| "Regex substitution in '%s' failed. " | |
| "Replacement too long?", alias->real); | |
| return PREGSUB_ERROR; | |
| } | |
| } | |
| else { | |
| /* need something non-null */ | |
| found = ""; | |
| } | |
| } | |
| } | |
| else { | |
| l = alias_matches(r->uri, alias->fake); | |
| if (l > 0) { | |
| ap_set_context_info(r, alias->fake, alias->real); | |
| if (is_redir) { | |
| char *escurl; | |
| escurl = ap_os_escape_path(r->pool, r->uri + l, 1); | |
| found = apr_pstrcat(r->pool, alias->real, escurl, NULL); | |
| } | |
| else | |
| found = apr_pstrcat(r->pool, alias->real, r->uri + l, NULL); | |
| } | |
| } | |
| if (found) { | |
| if (alias->handler) { /* Set handler, and leave a note for mod_cgi */ | |
| r->handler = alias->handler; | |
| apr_table_setn(r->notes, "alias-forced-type", r->handler); | |
| } | |
| /* XXX This is as SLOW as can be, next step, we optimize | |
| * and merge to whatever part of the found path was already | |
| * canonicalized. After I finish eliminating os canonical. | |
| * Better fail test for ap_server_root_relative needed here. | |
| */ | |
| if (!is_redir) { | |
| found = ap_server_root_relative(r->pool, found); | |
| } | |
| if (found) { | |
| *status = alias->redir_status; | |
| } | |
| return found; | |
| } | |
| } | |
| return NULL; | |
| } | |
| static int translate_alias_redir(request_rec *r) | |
| { | |
| ap_conf_vector_t *sconf = r->server->module_config; | |
| alias_server_conf *serverconf = ap_get_module_config(sconf, &alias_module); | |
| char *ret; | |
| int status; | |
| if (r->uri[0] != '/' && r->uri[0] != '\0') { | |
| return DECLINED; | |
| } | |
| if ((ret = try_redirect(r, &status)) != NULL | |
| || (ret = try_alias_list(r, serverconf->redirects, 1, &status)) | |
| != NULL) { | |
| if (ret == PREGSUB_ERROR) | |
| return HTTP_INTERNAL_SERVER_ERROR; | |
| if (ap_is_HTTP_REDIRECT(status)) { | |
| alias_dir_conf *dirconf = (alias_dir_conf *) | |
| ap_get_module_config(r->per_dir_config, &alias_module); | |
| if (dirconf->allow_relative != ALIAS_FLAG_ON || ret[0] != '/') { | |
| if (ret[0] == '/') { | |
| char *orig_target = ret; | |
| ret = ap_construct_url(r->pool, ret, r); | |
| ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00673) | |
| "incomplete redirection target of '%s' for " | |
| "URI '%s' modified to '%s'", | |
| orig_target, r->uri, ret); | |
| } | |
| if (!ap_is_url(ret)) { | |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00674) | |
| "cannot redirect '%s' to '%s'; " | |
| "target is not a valid absoluteURI or abs_path", | |
| r->uri, ret); | |
| return HTTP_INTERNAL_SERVER_ERROR; | |
| } | |
| } | |
| /* append requested query only, if the config didn't | |
| * supply its own. | |
| */ | |
| if (r->args && !ap_strchr(ret, '?')) { | |
| ret = apr_pstrcat(r->pool, ret, "?", r->args, NULL); | |
| } | |
| apr_table_setn(r->headers_out, "Location", ret); | |
| } | |
| return status; | |
| } | |
| if ((ret = try_alias(r)) != NULL | |
| || (ret = try_alias_list(r, serverconf->aliases, 0, &status)) | |
| != NULL) { | |
| r->filename = ret; | |
| return OK; | |
| } | |
| return DECLINED; | |
| } | |
| static int fixup_redir(request_rec *r) | |
| { | |
| void *dconf = r->per_dir_config; | |
| alias_dir_conf *dirconf = | |
| (alias_dir_conf *) ap_get_module_config(dconf, &alias_module); | |
| char *ret; | |
| int status; | |
| /* It may have changed since last time, so try again */ | |
| if ((ret = try_redirect(r, &status)) != NULL | |
| || (ret = try_alias_list(r, dirconf->redirects, 1, &status)) | |
| != NULL) { | |
| if (ret == PREGSUB_ERROR) | |
| return HTTP_INTERNAL_SERVER_ERROR; | |
| if (ap_is_HTTP_REDIRECT(status)) { | |
| if (dirconf->allow_relative != ALIAS_FLAG_ON || ret[0] != '/') { | |
| if (ret[0] == '/') { | |
| char *orig_target = ret; | |
| ret = ap_construct_url(r->pool, ret, r); | |
| ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00675) | |
| "incomplete redirection target of '%s' for " | |
| "URI '%s' modified to '%s'", | |
| orig_target, r->uri, ret); | |
| } | |
| if (!ap_is_url(ret)) { | |
| ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00676) | |
| "cannot redirect '%s' to '%s'; " | |
| "target is not a valid absoluteURI or abs_path", | |
| r->uri, ret); | |
| return HTTP_INTERNAL_SERVER_ERROR; | |
| } | |
| } | |
| /* append requested query only, if the config didn't | |
| * supply its own. | |
| */ | |
| if (r->args && !ap_strchr(ret, '?')) { | |
| ret = apr_pstrcat(r->pool, ret, "?", r->args, NULL); | |
| } | |
| apr_table_setn(r->headers_out, "Location", ret); | |
| } | |
| return status; | |
| } | |
| return DECLINED; | |
| } | |
| static const command_rec alias_cmds[] = | |
| { | |
| AP_INIT_TAKE12("Alias", add_alias, NULL, RSRC_CONF | ACCESS_CONF, | |
| "a fakename and a realname, or a realname in a Location"), | |
| AP_INIT_TAKE12("ScriptAlias", add_alias, "cgi-script", RSRC_CONF | ACCESS_CONF, | |
| "a fakename and a realname, or a realname in a Location"), | |
| AP_INIT_TAKE123("Redirect", add_redirect, (void *) HTTP_MOVED_TEMPORARILY, | |
| OR_FILEINFO, | |
| "an optional status, then document to be redirected and " | |
| "destination URL"), | |
| AP_INIT_TAKE2("AliasMatch", add_alias_regex, NULL, RSRC_CONF, | |
| "a regular expression and a filename"), | |
| AP_INIT_TAKE2("ScriptAliasMatch", add_alias_regex, "cgi-script", RSRC_CONF, | |
| "a regular expression and a filename"), | |
| AP_INIT_TAKE23("RedirectMatch", add_redirect_regex, | |
| (void *) HTTP_MOVED_TEMPORARILY, OR_FILEINFO, | |
| "an optional status, then a regular expression and " | |
| "destination URL"), | |
| AP_INIT_TAKE2("RedirectTemp", add_redirect2, | |
| (void *) HTTP_MOVED_TEMPORARILY, OR_FILEINFO, | |
| "a document to be redirected, then the destination URL"), | |
| AP_INIT_TAKE2("RedirectPermanent", add_redirect2, | |
| (void *) HTTP_MOVED_PERMANENTLY, OR_FILEINFO, | |
| "a document to be redirected, then the destination URL"), | |
| AP_INIT_FLAG("RedirectRelative", ap_set_flag_slot, | |
| (void*)APR_OFFSETOF(alias_dir_conf, allow_relative), OR_FILEINFO, | |
| "Set to ON to allow relative redirect targets to be issued as-is"), | |
| AP_INIT_FLAG("AliasPreservePath", ap_set_flag_slot, | |
| (void*)APR_OFFSETOF(alias_dir_conf, alias_preserve_path), OR_FILEINFO, | |
| "Set to ON to map the full path after the fakename to the realname."), | |
| {NULL} | |
| }; | |
| static void register_hooks(apr_pool_t *p) | |
| { | |
| static const char * const aszSucc[]={ "mod_userdir.c", | |
| "mod_vhost_alias.c",NULL }; | |
| ap_hook_translate_name(translate_alias_redir,NULL,aszSucc,APR_HOOK_MIDDLE); | |
| ap_hook_fixups(fixup_redir,NULL,NULL,APR_HOOK_MIDDLE); | |
| } | |
| AP_DECLARE_MODULE(alias) = | |
| { | |
| STANDARD20_MODULE_STUFF, | |
| create_alias_dir_config, /* dir config creater */ | |
| merge_alias_dir_config, /* dir merger --- default is to override */ | |
| create_alias_config, /* server config */ | |
| merge_alias_config, /* merge server configs */ | |
| alias_cmds, /* command apr_table_t */ | |
| register_hooks /* register hooks */ | |
| }; |