diff options
Diffstat (limited to 'APACHE_1_3_42/src/modules/standard/mod_dir.c')
| -rw-r--r-- | APACHE_1_3_42/src/modules/standard/mod_dir.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/APACHE_1_3_42/src/modules/standard/mod_dir.c b/APACHE_1_3_42/src/modules/standard/mod_dir.c new file mode 100644 index 0000000000..29e003974f --- /dev/null +++ b/APACHE_1_3_42/src/modules/standard/mod_dir.c @@ -0,0 +1,206 @@ +/* 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. + */ + +/* + * mod_dir.c: handle default index files, and trailing-/ redirects + */ + +#include "httpd.h" +#include "http_config.h" +#include "http_core.h" +#include "http_request.h" +#include "http_protocol.h" +#include "http_log.h" +#include "http_main.h" +#include "util_script.h" + +module MODULE_VAR_EXPORT dir_module; + +typedef struct dir_config_struct { + array_header *index_names; +} dir_config_rec; + +#define DIR_CMD_PERMS OR_INDEXES + +static const char *add_index(cmd_parms *cmd, void *dummy, char *arg) +{ + dir_config_rec *d = dummy; + + if (!d->index_names) { + d->index_names = ap_make_array(cmd->pool, 2, sizeof(char *)); + } + *(char **)ap_push_array(d->index_names) = arg; + return NULL; +} + +static const command_rec dir_cmds[] = +{ + {"DirectoryIndex", add_index, NULL, + DIR_CMD_PERMS, ITERATE, + "a list of file names"}, + {NULL} +}; + +static void *create_dir_config(pool *p, char *dummy) +{ + dir_config_rec *new = + (dir_config_rec *) ap_pcalloc(p, sizeof(dir_config_rec)); + + new->index_names = NULL; + return (void *) new; +} + +static void *merge_dir_configs(pool *p, void *basev, void *addv) +{ + dir_config_rec *new = (dir_config_rec *) ap_pcalloc(p, sizeof(dir_config_rec)); + dir_config_rec *base = (dir_config_rec *) basev; + dir_config_rec *add = (dir_config_rec *) addv; + + new->index_names = add->index_names ? add->index_names : base->index_names; + return new; +} + +static int handle_dir(request_rec *r) +{ + dir_config_rec *d = + (dir_config_rec *) ap_get_module_config(r->per_dir_config, + &dir_module); + char *dummy_ptr[1]; + char **names_ptr; + int num_names; + int error_notfound = 0; + + if (r->uri[0] == '\0' || r->uri[strlen(r->uri) - 1] != '/') { + char *ifile; + if (r->args != NULL) + ifile = ap_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri), + "/", "?", r->args, NULL); + else + ifile = ap_pstrcat(r->pool, ap_escape_uri(r->pool, r->uri), + "/", NULL); + + ap_table_setn(r->headers_out, "Location", + ap_construct_url(r->pool, ifile, r)); + return HTTP_MOVED_PERMANENTLY; + } + + /* KLUDGE --- make the sub_req lookups happen in the right directory. + * Fixing this in the sub_req_lookup functions themselves is difficult, + * and would probably break virtual includes... + */ + + if (r->filename[strlen(r->filename) - 1] != '/') { + r->filename = ap_pstrcat(r->pool, r->filename, "/", NULL); + } + + if (d->index_names) { + names_ptr = (char **)d->index_names->elts; + num_names = d->index_names->nelts; + } + else { + dummy_ptr[0] = DEFAULT_INDEX; + names_ptr = dummy_ptr; + num_names = 1; + } + + for (; num_names; ++names_ptr, --num_names) { + char *name_ptr = *names_ptr; + request_rec *rr = ap_sub_req_lookup_uri(name_ptr, r); + + if (rr->status == HTTP_OK && S_ISREG(rr->finfo.st_mode)) { + char *new_uri = ap_escape_uri(r->pool, rr->uri); + + if (rr->args != NULL) + new_uri = ap_pstrcat(r->pool, new_uri, "?", rr->args, NULL); + else if (r->args != NULL) + new_uri = ap_pstrcat(r->pool, new_uri, "?", r->args, NULL); + + ap_destroy_sub_req(rr); + ap_internal_redirect(new_uri, r); + return OK; + } + + /* If the request returned a redirect, propagate it to the client */ + + if (ap_is_HTTP_REDIRECT(rr->status) || + (rr->status == HTTP_NOT_ACCEPTABLE && num_names == 1) || + (rr->status == HTTP_UNAUTHORIZED && num_names == 1)) { + + ap_pool_join(r->pool, rr->pool); + error_notfound = rr->status; + r->notes = ap_overlay_tables(r->pool, r->notes, rr->notes); + r->headers_out = ap_overlay_tables(r->pool, r->headers_out, + rr->headers_out); + r->err_headers_out = ap_overlay_tables(r->pool, r->err_headers_out, + rr->err_headers_out); + return error_notfound; + } + + /* If the request returned something other than 404 (or 200), + * it means the module encountered some sort of problem. To be + * secure, we should return the error, rather than create + * along a (possibly unsafe) directory index. + * + * So we store the error, and if none of the listed files + * exist, we return the last error response we got, instead + * of a directory listing. + */ + if (rr->status && rr->status != HTTP_NOT_FOUND && rr->status != HTTP_OK) + error_notfound = rr->status; + + ap_destroy_sub_req(rr); + } + + if (error_notfound) + return error_notfound; + + if (r->method_number != M_GET) + return DECLINED; + + /* nothing for us to do, pass on through */ + + return DECLINED; +} + + +static const handler_rec dir_handlers[] = +{ + {DIR_MAGIC_TYPE, handle_dir}, + {NULL} +}; + +module MODULE_VAR_EXPORT dir_module = +{ + STANDARD_MODULE_STUFF, + NULL, /* initializer */ + create_dir_config, /* dir config creater */ + merge_dir_configs, /* dir merger --- default is to override */ + NULL, /* server config */ + NULL, /* merge server config */ + dir_cmds, /* command table */ + dir_handlers, /* handlers */ + NULL, /* filename translation */ + NULL, /* check_user_id */ + NULL, /* check auth */ + NULL, /* check access */ + NULL, /* type_checker */ + NULL, /* fixups */ + NULL, /* logger */ + NULL, /* header parser */ + NULL, /* child_init */ + NULL, /* child_exit */ + NULL /* post read-request */ +}; |