/* 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_config.c: once was auxiliary functions for reading httpd's config * file and converting filenames into a namespace * * Rob McCool * * Wall-to-wall rewrite for Apache... commands which are part of the * server core can now be found next door in "http_core.c". Now contains * general command loop, and functions which do bookkeeping for the new * Apache config stuff (modules and configuration vectors). * * rst * */ #include "apr.h" #include "apr_strings.h" #include "apr_portable.h" #include "apr_file_io.h" #include "apr_fnmatch.h" #define APR_WANT_STDIO #define APR_WANT_STRFUNC #include "apr_want.h" #include "ap_config.h" #include "httpd.h" #include "http_config.h" #include "http_protocol.h" #include "http_core.h" #include "http_log.h" /* for errors in parse_htaccess */ #include "http_request.h" /* for default_handler (see invoke_handler) */ #include "http_main.h" #include "http_vhost.h" #include "util_cfgtree.h" #include "util_varbuf.h" #include "mpm_common.h" #define APLOG_UNSET (APLOG_NO_MODULE - 1) /* we know core's module_index is 0 */ #undef APLOG_MODULE_INDEX #define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX AP_DECLARE_DATA const char *ap_server_argv0 = NULL; AP_DECLARE_DATA const char *ap_server_root = NULL; AP_DECLARE_DATA const char *ap_runtime_dir = NULL; AP_DECLARE_DATA server_rec *ap_server_conf = NULL; AP_DECLARE_DATA apr_pool_t *ap_pglobal = NULL; AP_DECLARE_DATA apr_array_header_t *ap_server_pre_read_config = NULL; AP_DECLARE_DATA apr_array_header_t *ap_server_post_read_config = NULL; AP_DECLARE_DATA apr_array_header_t *ap_server_config_defines = NULL; AP_DECLARE_DATA ap_directive_t *ap_conftree = NULL; APR_HOOK_STRUCT( APR_HOOK_LINK(header_parser) APR_HOOK_LINK(pre_config) APR_HOOK_LINK(check_config) APR_HOOK_LINK(post_config) APR_HOOK_LINK(open_logs) APR_HOOK_LINK(child_init) APR_HOOK_LINK(handler) APR_HOOK_LINK(quick_handler) APR_HOOK_LINK(optional_fn_retrieve) APR_HOOK_LINK(test_config) APR_HOOK_LINK(open_htaccess) ) AP_IMPLEMENT_HOOK_RUN_ALL(int, header_parser, (request_rec *r), (r), OK, DECLINED) AP_IMPLEMENT_HOOK_RUN_ALL(int, pre_config, (apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp), (pconf, plog, ptemp), OK, DECLINED) AP_IMPLEMENT_HOOK_RUN_ALL(int, check_config, (apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s), (pconf, plog, ptemp, s), OK, DECLINED) AP_IMPLEMENT_HOOK_VOID(test_config, (apr_pool_t *pconf, server_rec *s), (pconf, s)) AP_IMPLEMENT_HOOK_RUN_ALL(int, post_config, (apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s), (pconf, plog, ptemp, s), OK, DECLINED) /* During the course of debugging I expanded this macro out, so * rather than remove all the useful information there is in the * following lines, I'm going to leave it here in case anyone * else finds it useful. * * Ben has looked at it and thinks it correct :) * AP_DECLARE(int) ap_hook_post_config(ap_HOOK_post_config_t *pf, const char * const *aszPre, const char * const *aszSucc, int nOrder) { ap_LINK_post_config_t *pHook; if (!_hooks.link_post_config) { _hooks.link_post_config = apr_array_make(apr_hook_global_pool, 1, sizeof(ap_LINK_post_config_t)); apr_hook_sort_register("post_config", &_hooks.link_post_config); } pHook = apr_array_push(_hooks.link_post_config); pHook->pFunc = pf; pHook->aszPredecessors = aszPre; pHook->aszSuccessors = aszSucc; pHook->nOrder = nOrder; pHook->szName = apr_hook_debug_current; if (apr_hook_debug_enabled) apr_hook_debug_show("post_config", aszPre, aszSucc); } AP_DECLARE(apr_array_header_t *) ap_hook_get_post_config(void) { return _hooks.link_post_config; } AP_DECLARE(int) ap_run_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) { ap_LINK_post_config_t *pHook; int n; if (!_hooks.link_post_config) return; pHook = (ap_LINK_post_config_t *)_hooks.link_post_config->elts; for (n = 0; n < _hooks.link_post_config->nelts; ++n) pHook[n].pFunc (pconf, plog, ptemp, s); } */ AP_IMPLEMENT_HOOK_RUN_ALL(int, open_logs, (apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s), (pconf, plog, ptemp, s), OK, DECLINED) AP_IMPLEMENT_HOOK_VOID(child_init, (apr_pool_t *pchild, server_rec *s), (pchild, s)) AP_IMPLEMENT_HOOK_RUN_FIRST(int, handler, (request_rec *r), (r), DECLINED) AP_IMPLEMENT_HOOK_RUN_FIRST(int, quick_handler, (request_rec *r, int lookup), (r, lookup), DECLINED) AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t, open_htaccess, (request_rec *r, const char *dir_name, const char *access_name, ap_configfile_t **conffile, const char **full_name), (r, dir_name, access_name, conffile, full_name), AP_DECLINED) /* hooks with no args are implemented last, after disabling APR hook probes */ #if defined(APR_HOOK_PROBES_ENABLED) #undef APR_HOOK_PROBES_ENABLED #undef APR_HOOK_PROBE_ENTRY #define APR_HOOK_PROBE_ENTRY(ud,ns,name,args) #undef APR_HOOK_PROBE_RETURN #define APR_HOOK_PROBE_RETURN(ud,ns,name,rv,args) #undef APR_HOOK_PROBE_INVOKE #define APR_HOOK_PROBE_INVOKE(ud,ns,name,src,args) #undef APR_HOOK_PROBE_COMPLETE #define APR_HOOK_PROBE_COMPLETE(ud,ns,name,src,rv,args) #undef APR_HOOK_INT_DCL_UD #define APR_HOOK_INT_DCL_UD #endif AP_IMPLEMENT_HOOK_VOID(optional_fn_retrieve, (void), ()) /**************************************************************** * * We begin with the functions which deal with the linked list * of modules which control just about all of the server operation. */ /* total_modules is the number of modules that have been linked * into the server. */ static int total_modules = 0; /* dynamic_modules is the number of modules that have been added * after the pre-loaded ones have been set up. It shouldn't be larger * than DYNAMIC_MODULE_LIMIT. */ static int dynamic_modules = 0; /* The maximum possible value for total_modules, i.e. number of static * modules plus DYNAMIC_MODULE_LIMIT. */ static int max_modules = 0; /* The number of elements we need to alloc for config vectors. Before loading * of dynamic modules, we must be liberal and set this to max_modules. After * loading of dynamic modules, we can trim it down to total_modules. On * restart, reset to max_modules. */ static int conf_vector_length = 0; static int reserved_module_slots = 0; AP_DECLARE_DATA module *ap_top_module = NULL; AP_DECLARE_DATA module **ap_loaded_modules=NULL; static apr_hash_t *ap_config_hash = NULL; /* a list of the module symbol names with the trailing "_module"removed */ static char **ap_module_short_names = NULL; typedef int (*handler_func)(request_rec *); typedef void *(*dir_maker_func)(apr_pool_t *, char *); typedef void *(*merger_func)(apr_pool_t *, void *, void *); /* A list of the merge_dir_config functions of all loaded modules, sorted * by module_index. * Using this list in ap_merge_per_dir_configs() is faster than following * the module->next linked list because of better memory locality (resulting * in better cache usage). */ static merger_func *merger_func_cache; /* maximum nesting level for config directories */ #ifndef AP_MAX_INCLUDE_DIR_DEPTH #define AP_MAX_INCLUDE_DIR_DEPTH (128) #endif /* Dealing with config vectors. These are associated with per-directory, * per-server, and per-request configuration, and have a void* pointer for * each modules. The nature of the structure pointed to is private to the * module in question... the core doesn't (and can't) know. However, there * are defined interfaces which allow it to create instances of its private * per-directory and per-server structures, and to merge the per-directory * structures of a directory and its subdirectory (producing a new one in * which the defaults applying to the base directory have been properly * overridden). */ static ap_conf_vector_t *create_empty_config(apr_pool_t *p) { void *conf_vector = apr_pcalloc(p, sizeof(void *) * conf_vector_length); return conf_vector; } static ap_conf_vector_t *create_default_per_dir_config(apr_pool_t *p) { void **conf_vector = apr_pcalloc(p, sizeof(void *) * conf_vector_length); module *modp; for (modp = ap_top_module; modp; modp = modp->next) { dir_maker_func df = modp->create_dir_config; if (df) conf_vector[modp->module_index] = (*df)(p, NULL); } return (ap_conf_vector_t *)conf_vector; } AP_CORE_DECLARE(ap_conf_vector_t *) ap_merge_per_dir_configs(apr_pool_t *p, ap_conf_vector_t *base, ap_conf_vector_t *new_conf) { void **conf_vector = apr_palloc(p, sizeof(void *) * conf_vector_length); void **base_vector = (void **)base; void **new_vector = (void **)new_conf; int i; for (i = 0; i < total_modules; i++) { if (!new_vector[i]) { conf_vector[i] = base_vector[i]; } else { const merger_func df = merger_func_cache[i]; if (df && base_vector[i]) { conf_vector[i] = (*df)(p, base_vector[i], new_vector[i]); } else conf_vector[i] = new_vector[i]; } } return (ap_conf_vector_t *)conf_vector; } static ap_conf_vector_t *create_server_config(apr_pool_t *p, server_rec *s) { void **conf_vector = apr_pcalloc(p, sizeof(void *) * conf_vector_length); module *modp; for (modp = ap_top_module; modp; modp = modp->next) { if (modp->create_server_config) conf_vector[modp->module_index] = (*modp->create_server_config)(p, s); } return (ap_conf_vector_t *)conf_vector; } static void merge_server_configs(apr_pool_t *p, ap_conf_vector_t *base, ap_conf_vector_t *virt) { /* Can reuse the 'virt' vector for the spine of it, since we don't * have to deal with the moral equivalent of .htaccess files here... */ void **base_vector = (void **)base; void **virt_vector = (void **)virt; module *modp; for (modp = ap_top_module; modp; modp = modp->next) { merger_func df = modp->merge_server_config; int i = modp->module_index; if (!virt_vector[i]) virt_vector[i] = base_vector[i]; else if (df) virt_vector[i] = (*df)(p, base_vector[i], virt_vector[i]); } } AP_CORE_DECLARE(ap_conf_vector_t *) ap_create_request_config(apr_pool_t *p) { return create_empty_config(p); } AP_CORE_DECLARE(ap_conf_vector_t *) ap_create_conn_config(apr_pool_t *p) { return create_empty_config(p); } AP_CORE_DECLARE(ap_conf_vector_t *) ap_create_per_dir_config(apr_pool_t *p) { return create_empty_config(p); } /* Invoke the filter_init_func for all filters with FILTERS where f->r * matches R. Restricting to a matching R avoids re-running init * functions for filters configured for r->main where r is a * subrequest. */ static int invoke_filter_init(request_rec *r, ap_filter_t *filters) { while (filters) { if (filters->frec->filter_init_func && filters->r == r) { int result = filters->frec->filter_init_func(filters); if (result != OK) { return result; } } filters = filters->next; } return OK; } AP_CORE_DECLARE(int) ap_invoke_handler(request_rec *r) { const char *handler; const char *p; int result; const char *old_handler = r->handler; const char *ignore; /* * The new insert_filter stage makes the most sense here. We only use * it when we are going to run the request, so we must insert filters * if any are available. Since the goal of this phase is to allow all * modules to insert a filter if they want to, this filter returns * void. I just can't see any way that this filter can reasonably * fail, either your modules inserts something or it doesn't. rbb */ ap_run_insert_filter(r); /* Before continuing, allow each filter that is in the two chains to * run their init function to let them do any magic before we could * start generating data. */ result = invoke_filter_init(r, r->input_filters); if (result != OK) { return result; } result = invoke_filter_init(r, r->output_filters); if (result != OK) { return result; } if (!r->handler) { if (r->content_type) { handler = r->content_type; if ((p=ap_strchr_c(handler, ';')) != NULL) { char *new_handler = (char *)apr_pmemdup(r->pool, handler, p - handler + 1); char *p2 = new_handler + (p - handler); handler = new_handler; /* exclude media type arguments */ while (p2 > handler && p2[-1] == ' ') --p2; /* strip trailing spaces */ *p2='\0'; } } else { handler = AP_DEFAULT_HANDLER_NAME; } r->handler = handler; } result = ap_run_handler(r); r->handler = old_handler; if (result == DECLINED && r->handler && r->filename) { ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(00523) "handler \"%s\" not found for: %s", r->handler, r->filename); } if ((result != OK) && (result != DONE) && (result != DECLINED) && (result != SUSPENDED) && (result != AP_FILTER_ERROR) /* ap_die() knows about this specifically */ && !ap_is_HTTP_VALID_RESPONSE(result)) { /* If a module is deliberately returning something else * (request_rec in non-HTTP or proprietary extension?) * let it set a note to allow it explicitly. * Otherwise, a return code that is neither reserved nor HTTP * is a bug, as in PR#31759. */ ignore = apr_table_get(r->notes, "HTTP_IGNORE_RANGE"); if (!ignore) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00524) "Handler for %s returned invalid result code %d", r->handler, result); result = HTTP_INTERNAL_SERVER_ERROR; } } return result == DECLINED ? HTTP_INTERNAL_SERVER_ERROR : result; } AP_DECLARE(int) ap_method_is_limited(cmd_parms *cmd, const char *method) { int methnum; methnum = ap_method_number_of(method); /* * A method number either hardcoded into apache or * added by a module and registered. */ if (methnum != M_INVALID) { return (cmd->limited & (AP_METHOD_BIT << methnum)) ? 1 : 0; } return 0; /* not found */ } AP_DECLARE(void) ap_register_hooks(module *m, apr_pool_t *p) { if (m->register_hooks) { if (getenv("SHOW_HOOKS")) { printf("Registering hooks for %s\n", m->name); apr_hook_debug_enabled = 1; } apr_hook_debug_current = m->name; m->register_hooks(p); } } static void ap_add_module_commands(module *m, apr_pool_t *p); typedef struct ap_mod_list_struct ap_mod_list; struct ap_mod_list_struct { struct ap_mod_list_struct *next; module *m; const command_rec *cmd; }; static void rebuild_conf_hash(apr_pool_t *p, int add_prelinked) { module **m; ap_config_hash = apr_hash_make(p); apr_pool_cleanup_register(p, &ap_config_hash, ap_pool_cleanup_set_null, apr_pool_cleanup_null); if (add_prelinked) { for (m = ap_prelinked_modules; *m != NULL; m++) { ap_add_module_commands(*m, p); } } } static void ap_add_module_commands(module *m, apr_pool_t *p) { apr_pool_t *tpool; ap_mod_list *mln; const command_rec *cmd; char *dir; cmd = m->cmds; if (ap_config_hash == NULL) { rebuild_conf_hash(p, 0); } tpool = apr_hash_pool_get(ap_config_hash); while (cmd && cmd->name) { mln = apr_palloc(tpool, sizeof(ap_mod_list)); mln->cmd = cmd; mln->m = m; dir = apr_pstrdup(tpool, cmd->name); ap_str_tolower(dir); mln->next = apr_hash_get(ap_config_hash, dir, APR_HASH_KEY_STRING); apr_hash_set(ap_config_hash, dir, APR_HASH_KEY_STRING, mln); ++cmd; } } /* One-time setup for precompiled modules --- NOT to be done on restart */ AP_DECLARE(const char *) ap_add_module(module *m, apr_pool_t *p, const char *sym_name) { ap_module_symbol_t *sym = ap_prelinked_module_symbols; /* This could be called from a LoadModule httpd.conf command, * after the file has been linked and the module structure within it * teased out... */ if (m->version != MODULE_MAGIC_NUMBER_MAJOR) { return apr_psprintf(p, "Module \"%s\" is not compatible with this " "version of Apache (found %d, need %d). Please " "contact the vendor for the correct version.", m->name, m->version, MODULE_MAGIC_NUMBER_MAJOR); } if (m->module_index == -1) { if (dynamic_modules >= DYNAMIC_MODULE_LIMIT) { return apr_psprintf(p, "Module \"%s\" could not be loaded, " "because the dynamic module limit was " "reached. Please increase " "DYNAMIC_MODULE_LIMIT and recompile.", m->name); } /* * If this fails some module forgot to call ap_reserve_module_slots*. */ ap_assert(total_modules < conf_vector_length); m->module_index = total_modules++; dynamic_modules++; } else if (!sym_name) { while (sym->modp != NULL) { if (sym->modp == m) { sym_name = sym->name; break; } sym++; } } if (m->next == NULL) { m->next = ap_top_module; ap_top_module = m; } if (sym_name) { int len = strlen(sym_name); int slen = strlen("_module"); if (len > slen && !strcmp(sym_name + len - slen, "_module")) { len -= slen; } ap_module_short_names[m->module_index] = ap_malloc(len + 1); memcpy(ap_module_short_names[m->module_index], sym_name, len); ap_module_short_names[m->module_index][len] = '\0'; merger_func_cache[m->module_index] = m->merge_dir_config; } /* Some C compilers put a complete path into __FILE__, but we want * only the filename (e.g. mod_includes.c). So check for path * components (Unix and DOS), and remove them. */ if (ap_strrchr_c(m->name, '/')) m->name = 1 + ap_strrchr_c(m->name, '/'); if (ap_strrchr_c(m->name, '\\')) m->name = 1 + ap_strrchr_c(m->name, '\\'); #ifdef _OSD_POSIX /* __FILE__ = * "*POSIX(/home/martin/apache/src/modules/standard/mod_info.c)" */ /* We cannot fix the string in-place, because it's const */ if (m->name[strlen(m->name)-1] == ')') { char *tmp = ap_malloc(strlen(m->name)); /* FIXME: memory leak, albeit a small one */ memcpy(tmp, m->name, strlen(m->name)-1); tmp[strlen(m->name)-1] = '\0'; m->name = tmp; } #endif /*_OSD_POSIX*/ ap_add_module_commands(m, p); /* FIXME: is this the right place to call this? * It doesn't appear to be */ ap_register_hooks(m, p); return NULL; } /* * remove_module undoes what add_module did. There are some caveats: * when the module is removed, its slot is lost so all the current * per-dir and per-server configurations are invalid. So we should * only ever call this function when you are invalidating almost * all our current data. I.e. when doing a restart. */ AP_DECLARE(void) ap_remove_module(module *m) { module *modp; modp = ap_top_module; if (modp == m) { /* We are the top module, special case */ ap_top_module = modp->next; m->next = NULL; } else { /* Not the top module, find use. When found modp will * point to the module _before_ us in the list */ while (modp && modp->next != m) { modp = modp->next; } if (!modp) { /* Uh-oh, this module doesn't exist */ ap_log_error(APLOG_MARK, APLOG_ERR, 0, NULL, APLOGNO(00525) "Cannot remove module %s: not found in module list", m->name); return; } /* Eliminate us from the module list */ modp->next = modp->next->next; } free(ap_module_short_names[m->module_index]); ap_module_short_names[m->module_index] = NULL; merger_func_cache[m->module_index] = NULL; m->module_index = -1; /* simulate being unloaded, should * be unnecessary */ dynamic_modules--; total_modules--; } AP_DECLARE(const char *) ap_add_loaded_module(module *mod, apr_pool_t *p, const char *short_name) { module **m; const char *error; /* * Add module pointer to top of chained module list */ error = ap_add_module(mod, p, short_name); if (error) { return error; } /* * And module pointer to list of loaded modules * * Notes: 1. ap_add_module() would already complain if no more space * exists for adding a dynamically loaded module * 2. ap_add_module() accepts double inclusion, so we have * to accept this, too. */ for (m = ap_loaded_modules; *m != NULL; m++) ; *m++ = mod; *m = NULL; return NULL; } AP_DECLARE(void) ap_remove_loaded_module(module *mod) { module **m; module **m2; int done; /* * Remove module pointer from chained module list */ ap_remove_module(mod); /* * Remove module pointer from list of loaded modules * * Note: 1. We cannot determine if the module was successfully * removed by ap_remove_module(). * 2. We have not to complain explicitly when the module * is not found because ap_remove_module() did it * for us already. */ for (m = m2 = ap_loaded_modules, done = 0; *m2 != NULL; m2++) { if (*m2 == mod && done == 0) done = 1; else *m++ = *m2; } *m = NULL; } AP_DECLARE(const char *) ap_setup_prelinked_modules(process_rec *process) { module **m; module **m2; const char *error; apr_hook_global_pool=process->pconf; rebuild_conf_hash(process->pconf, 0); /* * Initialise total_modules variable and module indices */ total_modules = 0; for (m = ap_preloaded_modules; *m != NULL; m++) (*m)->module_index = total_modules++; max_modules = total_modules + DYNAMIC_MODULE_LIMIT + 1; conf_vector_length = max_modules; /* * Initialise list of loaded modules and short names */ ap_loaded_modules = (module **)apr_palloc(process->pool, sizeof(module *) * conf_vector_length); if (!ap_module_short_names) ap_module_short_names = ap_calloc(sizeof(char *), conf_vector_length); if (!merger_func_cache) merger_func_cache = ap_calloc(sizeof(merger_func), conf_vector_length); if (ap_loaded_modules == NULL || ap_module_short_names == NULL || merger_func_cache == NULL) return "Ouch! Out of memory in ap_setup_prelinked_modules()!"; for (m = ap_preloaded_modules, m2 = ap_loaded_modules; *m != NULL; ) *m2++ = *m++; *m2 = NULL; /* * Initialize chain of linked (=activate) modules */ for (m = ap_prelinked_modules; *m != NULL; m++) { error = ap_add_module(*m, process->pconf, NULL); if (error) { return error; } } apr_hook_sort_all(); return NULL; } AP_DECLARE(const char *) ap_find_module_name(module *m) { return m->name; } AP_DECLARE(const char *) ap_find_module_short_name(int module_index) { if (module_index < 0 || module_index >= conf_vector_length) return NULL; return ap_module_short_names[module_index]; } AP_DECLARE(module *) ap_find_linked_module(const char *name) { module *modp; for (modp = ap_top_module; modp; modp = modp->next) { if (strcmp(modp->name, name) == 0) return modp; } return NULL; } /***************************************************************** * * Resource, access, and .htaccess config files now parsed by a common * command loop. * * Let's begin with the basics; parsing the line and * invoking the function... */ #define AP_MAX_ARGC 64 static const char *invoke_cmd(const command_rec *cmd, cmd_parms *parms, void *mconfig, const char *args) { int override_list_ok = 0; char *w, *w2, *w3; const char *errmsg = NULL; /* Have we been provided a list of acceptable directives? */ if (parms->override_list != NULL) { if (apr_table_get(parms->override_list, cmd->name) != NULL) { override_list_ok = 1; } } if ((parms->override & cmd->req_override) == 0 && !override_list_ok) { if (parms->override & NONFATAL_OVERRIDE) { ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, parms->temp_pool, APLOGNO(02295) "%s in .htaccess forbidden by AllowOverride", cmd->name); return NULL; } else { return apr_pstrcat(parms->pool, cmd->name, " not allowed here", NULL); } } parms->info = cmd->cmd_data; parms->cmd = cmd; switch (cmd->args_how) { case RAW_ARGS: #ifdef RESOLVE_ENV_PER_TOKEN args = ap_resolve_env(parms->pool,args); #endif return cmd->AP_RAW_ARGS(parms, mconfig, args); case TAKE_ARGV: { char *argv[AP_MAX_ARGC]; int argc = 0; do { w = ap_getword_conf(parms->pool, &args); if (*w == '\0' && *args == '\0') { break; } argv[argc] = w; argc++; } while (argc < AP_MAX_ARGC && *args != '\0'); return cmd->AP_TAKE_ARGV(parms, mconfig, argc, argv); } case NO_ARGS: if (*args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes no arguments", NULL); return cmd->AP_NO_ARGS(parms, mconfig); case TAKE1: w = ap_getword_conf(parms->pool, &args); if (*w == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes one argument", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE1(parms, mconfig, w); case TAKE2: w = ap_getword_conf(parms->pool, &args); w2 = ap_getword_conf(parms->pool, &args); if (*w == '\0' || *w2 == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes two arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE2(parms, mconfig, w, w2); case TAKE12: w = ap_getword_conf(parms->pool, &args); w2 = ap_getword_conf(parms->pool, &args); if (*w == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes 1-2 arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE2(parms, mconfig, w, *w2 ? w2 : NULL); case TAKE3: w = ap_getword_conf(parms->pool, &args); w2 = ap_getword_conf(parms->pool, &args); w3 = ap_getword_conf(parms->pool, &args); if (*w == '\0' || *w2 == '\0' || *w3 == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes three arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE3(parms, mconfig, w, w2, w3); case TAKE23: w = ap_getword_conf(parms->pool, &args); w2 = ap_getword_conf(parms->pool, &args); w3 = *args ? ap_getword_conf(parms->pool, &args) : NULL; if (*w == '\0' || *w2 == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes two or three arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE3(parms, mconfig, w, w2, w3); case TAKE123: w = ap_getword_conf(parms->pool, &args); w2 = *args ? ap_getword_conf(parms->pool, &args) : NULL; w3 = *args ? ap_getword_conf(parms->pool, &args) : NULL; if (*w == '\0' || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes one, two or three arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE3(parms, mconfig, w, w2, w3); case TAKE13: w = ap_getword_conf(parms->pool, &args); w2 = *args ? ap_getword_conf(parms->pool, &args) : NULL; w3 = *args ? ap_getword_conf(parms->pool, &args) : NULL; if (*w == '\0' || (w2 && *w2 && !w3) || *args != 0) return apr_pstrcat(parms->pool, cmd->name, " takes one or three arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); return cmd->AP_TAKE3(parms, mconfig, w, w2, w3); case ITERATE: w = ap_getword_conf(parms->pool, &args); if (*w == '\0') return apr_pstrcat(parms->pool, cmd->name, " requires at least one argument", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); while (*w != '\0') { errmsg = cmd->AP_TAKE1(parms, mconfig, w); if (errmsg && strcmp(errmsg, DECLINE_CMD) != 0) return errmsg; w = ap_getword_conf(parms->pool, &args); } return errmsg; case ITERATE2: w = ap_getword_conf(parms->pool, &args); if (*w == '\0' || *args == 0) return apr_pstrcat(parms->pool, cmd->name, " requires at least two arguments", cmd->errmsg ? ", " : NULL, cmd->errmsg, NULL); while (*(w2 = ap_getword_conf(parms->pool, &args)) != '\0') { errmsg = cmd->AP_TAKE2(parms, mconfig, w, w2); if (errmsg && strcmp(errmsg, DECLINE_CMD) != 0) return errmsg; } return errmsg; case FLAG: /* * This is safe to use temp_pool here, because the 'flag' itself is not * forwarded as-is */ w = ap_getword_conf(parms->temp_pool, &args); if (*w == '\0' || (strcasecmp(w, "on") && strcasecmp(w, "off"))) return apr_pstrcat(parms->pool, cmd->name, " must be On or Off", NULL); return cmd->AP_FLAG(parms, mconfig, strcasecmp(w, "off") != 0); default: return apr_pstrcat(parms->pool, cmd->name, " is improperly configured internally (server bug)", NULL); } } AP_CORE_DECLARE(const command_rec *) ap_find_command(const char *name, const command_rec *cmds) { while (cmds->name) { if (!strcasecmp(name, cmds->name)) return cmds; ++cmds; } return NULL; } AP_CORE_DECLARE(const command_rec *) ap_find_command_in_modules( const char *cmd_name, module **mod) { const command_rec *cmdp; module *modp; for (modp = *mod; modp; modp = modp->next) { if (modp->cmds && (cmdp = ap_find_command(cmd_name, modp->cmds))) { *mod = modp; return cmdp; } } return NULL; } AP_CORE_DECLARE(void *) ap_set_config_vectors(server_rec *server, ap_conf_vector_t *section_vector, const char *section, module *mod, apr_pool_t *pconf) { void *section_config = ap_get_module_config(section_vector, mod); void *server_config = ap_get_module_config(server->module_config, mod); if (!section_config && mod->create_dir_config) { /* ### need to fix the create_dir_config functions' prototype... */ section_config = (*mod->create_dir_config)(pconf, (char *)section); ap_set_module_config(section_vector, mod, section_config); } if (!server_config && mod->create_server_config) { server_config = (*mod->create_server_config)(pconf, server); ap_set_module_config(server->module_config, mod, server_config); } return section_config; } static const char *execute_now(char *cmd_line, const char *args, cmd_parms *parms, apr_pool_t *p, apr_pool_t *ptemp, ap_directive_t **sub_tree, ap_directive_t *parent); static const char *ap_build_config_sub(apr_pool_t *p, apr_pool_t *temp_pool, const char *l, cmd_parms *parms, ap_directive_t **current, ap_directive_t **curr_parent, ap_directive_t **conftree) { const char *retval = NULL; const char *args; char *cmd_name; ap_directive_t *newdir; module *mod = ap_top_module; const command_rec *cmd; if (*l == '#' || *l == '\0') return NULL; #if RESOLVE_ENV_PER_TOKEN args = l; #else args = ap_resolve_env(temp_pool, l); #endif /* The first word is the name of a directive. We can safely use the * 'temp_pool' for it. If it matches the name of a known directive, we * can reference the string within the module if needed. Otherwise, we * can still make a copy in the 'p' pool. */ cmd_name = ap_getword_conf(temp_pool, &args); if (*cmd_name == '\0') { /* Note: this branch should not occur. An empty line should have * triggered the exit further above. */ return NULL; } if (cmd_name[1] != '/') { char *lastc = cmd_name + strlen(cmd_name) - 1; if (*lastc == '>') { *lastc = '\0' ; } if (cmd_name[0] == '<' && *args == '\0') { args = ">"; } } newdir = apr_pcalloc(p, sizeof(ap_directive_t)); newdir->filename = parms->config_file->name; newdir->line_num = parms->config_file->line_number; newdir->args = apr_pstrdup(p, args); if ((cmd = ap_find_command_in_modules(cmd_name, &mod)) != NULL) { newdir->directive = cmd->name; if (cmd->req_override & EXEC_ON_READ) { ap_directive_t *sub_tree = NULL; parms->err_directive = newdir; retval = execute_now(cmd_name, args, parms, p, temp_pool, &sub_tree, *curr_parent); if (*current) { (*current)->next = sub_tree; } else { *current = sub_tree; if (*curr_parent) { (*curr_parent)->first_child = (*current); } if (*current) { (*current)->parent = (*curr_parent); } } if (*current) { if (!*conftree) { /* Before walking *current to the end of the list, * set the head to *current. */ *conftree = *current; } while ((*current)->next != NULL) { (*current) = (*current)->next; (*current)->parent = (*curr_parent); } } return retval; } } else { /* No known directive found? Make a copy of what we have parsed. */ newdir->directive = apr_pstrdup(p, cmd_name); } if (cmd_name[0] == '<') { if (cmd_name[1] != '/') { (*current) = ap_add_node(curr_parent, *current, newdir, 1); } else if (*curr_parent == NULL) { parms->err_directive = newdir; return apr_pstrcat(p, cmd_name, " without matching <", cmd_name + 2, " section", NULL); } else { char *bracket = cmd_name + strlen(cmd_name) - 1; if (*bracket != '>') { parms->err_directive = newdir; return apr_pstrcat(p, cmd_name, "> directive missing closing '>'", NULL); } *bracket = '\0'; if (strcasecmp(cmd_name + 2, (*curr_parent)->directive + 1) != 0) { parms->err_directive = newdir; return apr_pstrcat(p, "Expected directive + 1, "> but saw ", cmd_name, ">", NULL); } *bracket = '>'; /* done with this section; move up a level */ *current = *curr_parent; *curr_parent = (*current)->parent; } } else { *current = ap_add_node(curr_parent, *current, newdir, 0); } return retval; } #define VARBUF_INIT_LEN 200 #define VARBUF_MAX_LEN (16*1024*1024) AP_DECLARE(const char *) ap_build_cont_config(apr_pool_t *p, apr_pool_t *temp_pool, cmd_parms *parms, ap_directive_t **current, ap_directive_t **curr_parent, char *orig_directive) { char *bracket; const char *retval; ap_directive_t *sub_tree = NULL; apr_status_t rc; struct ap_varbuf vb; apr_size_t max_len = VARBUF_MAX_LEN; if (p == temp_pool) max_len = HUGE_STRING_LEN; /* lower limit for .htaccess */ bracket = apr_pstrcat(temp_pool, orig_directive + 1, ">", NULL); ap_varbuf_init(temp_pool, &vb, VARBUF_INIT_LEN); while ((rc = ap_varbuf_cfg_getline(&vb, parms->config_file, max_len)) == APR_SUCCESS) { if (!memcmp(vb.buf, "config_file, rc); *current = sub_tree; return NULL; } static const char *ap_walk_config_sub(const ap_directive_t *current, cmd_parms *parms, ap_conf_vector_t *section_vector) { const command_rec *cmd; ap_mod_list *ml; char *dir = apr_pstrdup(parms->temp_pool, current->directive); ap_str_tolower(dir); ml = apr_hash_get(ap_config_hash, dir, APR_HASH_KEY_STRING); if (ml == NULL) { parms->err_directive = current; if (parms->override & NONFATAL_UNKNOWN) { ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, parms->temp_pool, APLOGNO(02296) "Unknown directive %s " "perhaps misspelled or defined by a module " "not included in the server configuration", dir); return NULL; } else { return apr_pstrcat(parms->pool, "Invalid command '", current->directive, "', perhaps misspelled or defined by a module " "not included in the server configuration", NULL); } } for ( ; ml != NULL; ml = ml->next) { void *dir_config = ap_set_config_vectors(parms->server, section_vector, parms->path, ml->m, parms->pool); const char *retval; cmd = ml->cmd; /* Once was enough? */ if (cmd->req_override & EXEC_ON_READ) { continue; } retval = invoke_cmd(cmd, parms, dir_config, current->args); if (retval != NULL && strcmp(retval, DECLINE_CMD) != 0) { /* If the directive in error has already been set, don't * replace it. Otherwise, an error inside a container * will be reported as occurring on the first line of the * container. */ if (!parms->err_directive) { parms->err_directive = current; } return retval; } } return NULL; } AP_DECLARE(const char *) ap_walk_config(ap_directive_t *current, cmd_parms *parms, ap_conf_vector_t *section_vector) { ap_conf_vector_t *oldconfig = parms->context; parms->context = section_vector; /* scan through all directives, executing each one */ for (; current != NULL; current = current->next) { const char *errmsg; parms->directive = current; /* actually parse the command and execute the correct function */ errmsg = ap_walk_config_sub(current, parms, section_vector); if (errmsg != NULL) { /* restore the context (just in case) */ parms->context = oldconfig; return errmsg; } } parms->context = oldconfig; return NULL; } AP_DECLARE(const char *) ap_build_config(cmd_parms *parms, apr_pool_t *p, apr_pool_t *temp_pool, ap_directive_t **conftree) { ap_directive_t *current = *conftree; ap_directive_t *curr_parent = NULL; const char *errmsg; ap_directive_t **last_ptr = NULL; apr_status_t rc; struct ap_varbuf vb; apr_size_t max_len = VARBUF_MAX_LEN; if (p == temp_pool) max_len = HUGE_STRING_LEN; /* lower limit for .htaccess */ ap_varbuf_init(temp_pool, &vb, VARBUF_INIT_LEN); if (current != NULL) { /* If we have to traverse the whole tree again for every included * config file, the required time grows as O(n^2) with the number of * files. This can be a significant delay for large configurations. * Therefore we cache a pointer to the last node. */ last_ptr = &(current->last); if (last_ptr && *last_ptr) { current = *last_ptr; } while (current->next) { current = current->next; } if (last_ptr) { /* update cached pointer to last node */ *last_ptr = current; } } while ((rc = ap_varbuf_cfg_getline(&vb, parms->config_file, max_len)) == APR_SUCCESS) { errmsg = ap_build_config_sub(p, temp_pool, vb.buf, parms, ¤t, &curr_parent, conftree); if (errmsg != NULL) return errmsg; if (*conftree == NULL && curr_parent != NULL) { *conftree = curr_parent; } if (*conftree == NULL && current != NULL) { *conftree = current; } } ap_varbuf_free(&vb); if (rc != APR_EOF && rc != APR_SUCCESS) return ap_pcfg_strerror(temp_pool, parms->config_file, rc); if (curr_parent != NULL) { errmsg = ""; while (curr_parent != NULL) { errmsg = apr_psprintf(p, "%s%s%s:%u: %s> was not closed.", errmsg, *errmsg == '\0' ? "" : APR_EOL_STR, curr_parent->filename, curr_parent->line_num, curr_parent->directive); parms->err_directive = curr_parent; curr_parent = curr_parent->parent; } return errmsg; } return NULL; } /* * Generic command functions... */ AP_DECLARE_NONSTD(const char *) ap_set_string_slot(cmd_parms *cmd, void *struct_ptr, const char *arg) { int offset = (int)(long)cmd->info; *(const char **)((char *)struct_ptr + offset) = arg; return NULL; } AP_DECLARE_NONSTD(const char *) ap_set_int_slot(cmd_parms *cmd, void *struct_ptr, const char *arg) { char *endptr; char *error_str = NULL; int offset = (int)(long)cmd->info; *(int *)((char*)struct_ptr + offset) = strtol(arg, &endptr, 10); if ((*arg == '\0') || (*endptr != '\0')) { error_str = apr_psprintf(cmd->pool, "Invalid value for directive %s, expected integer", cmd->directive->directive); } return error_str; } AP_DECLARE_NONSTD(const char *) ap_set_string_slot_lower(cmd_parms *cmd, void *struct_ptr, const char *arg_) { char *arg = apr_pstrdup(cmd->pool,arg_); int offset = (int)(long)cmd->info; ap_str_tolower(arg); *(char **)((char *)struct_ptr + offset) = arg; return NULL; } AP_DECLARE_NONSTD(const char *) ap_set_flag_slot(cmd_parms *cmd, void *struct_ptr_v, int arg) { int offset = (int)(long)cmd->info; char *struct_ptr = (char *)struct_ptr_v; *(int *)(struct_ptr + offset) = arg ? 1 : 0; return NULL; } AP_DECLARE_NONSTD(const char *) ap_set_flag_slot_char(cmd_parms *cmd, void *struct_ptr_v, int arg) { int offset = (int)(long)cmd->info; char *struct_ptr = (char *)struct_ptr_v; *(struct_ptr + offset) = arg ? 1 : 0; return NULL; } AP_DECLARE_NONSTD(const char *) ap_set_file_slot(cmd_parms *cmd, void *struct_ptr, const char *arg) { /* Prepend server_root to relative arg. * This allows most args to be independent of server_root, * so the server can be moved or mirrored with less pain. */ const char *path; int offset = (int)(long)cmd->info; path = ap_server_root_relative(cmd->pool, arg); if (!path) { return apr_pstrcat(cmd->pool, "Invalid file path ", arg, NULL); } *(const char **) ((char*)struct_ptr + offset) = path; return NULL; } AP_DECLARE_NONSTD(const char *) ap_set_deprecated(cmd_parms *cmd, void *struct_ptr, const char *arg) { return cmd->cmd->errmsg; } AP_DECLARE(void) ap_reset_module_loglevels(struct ap_logconf *l, int val) { if (l->module_levels) memset(l->module_levels, val, conf_vector_length); } AP_DECLARE(void) ap_set_module_loglevel(apr_pool_t *pool, struct ap_logconf *l, int index, int level) { if (!l->module_levels) { l->module_levels = apr_palloc(pool, conf_vector_length); if (l->level == APLOG_UNSET) { ap_reset_module_loglevels(l, APLOG_UNSET); } else { ap_reset_module_loglevels(l, APLOG_NO_MODULE); } } l->module_levels[index] = level; } /***************************************************************** * * Reading whole config files... */ static cmd_parms default_parms = {NULL, 0, 0, NULL, -1, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}; AP_DECLARE(char *) ap_server_root_relative(apr_pool_t *p, const char *file) { char *newpath = NULL; apr_status_t rv; rv = apr_filepath_merge(&newpath, ap_server_root, file, APR_FILEPATH_TRUENAME, p); if (newpath && (rv == APR_SUCCESS || APR_STATUS_IS_EPATHWILD(rv) || APR_STATUS_IS_ENOENT(rv) || APR_STATUS_IS_ENOTDIR(rv))) { return newpath; } else { return NULL; } } AP_DECLARE(char *) ap_runtime_dir_relative(apr_pool_t *p, const char *file) { char *newpath = NULL; apr_status_t rv; const char *runtime_dir = ap_runtime_dir ? ap_runtime_dir : ap_server_root_relative(p, DEFAULT_REL_RUNTIMEDIR); rv = apr_filepath_merge(&newpath, runtime_dir, file, APR_FILEPATH_TRUENAME, p); if (newpath && (rv == APR_SUCCESS || APR_STATUS_IS_EPATHWILD(rv) || APR_STATUS_IS_ENOENT(rv) || APR_STATUS_IS_ENOTDIR(rv))) { return newpath; } else { return NULL; } } AP_DECLARE(const char *) ap_soak_end_container(cmd_parms *cmd, char *directive) { struct ap_varbuf vb; const char *args; char *cmd_name; apr_status_t rc; apr_size_t max_len = VARBUF_MAX_LEN; if (cmd->pool == cmd->temp_pool) max_len = HUGE_STRING_LEN; /* lower limit for .htaccess */ ap_varbuf_init(cmd->temp_pool, &vb, VARBUF_INIT_LEN); while ((rc = ap_varbuf_cfg_getline(&vb, cmd->config_file, max_len)) == APR_SUCCESS) { args = vb.buf; cmd_name = ap_getword_conf(cmd->temp_pool, &args); if (cmd_name[0] == '<') { if (cmd_name[1] == '/') { cmd_name[strlen(cmd_name) - 1] = '\0'; if (strcasecmp(cmd_name + 2, directive + 1) != 0) { return apr_pstrcat(cmd->pool, "Expected but saw ", cmd_name, ">", NULL); } ap_varbuf_free(&vb); return NULL; /* found end of container */ } else { const char *msg; if (*args == '\0' && cmd_name[strlen(cmd_name) - 1] == '>') { cmd_name[strlen(cmd_name) - 1] = '\0'; } if ((msg = ap_soak_end_container(cmd, cmd_name)) != NULL) { return msg; } } } } if (rc != APR_EOF && rc != APR_SUCCESS) return ap_pcfg_strerror(cmd->temp_pool, cmd->config_file, rc); return apr_pstrcat(cmd->pool, "Expected before end of configuration", NULL); } static const char *execute_now(char *cmd_line, const char *args, cmd_parms *parms, apr_pool_t *p, apr_pool_t *ptemp, ap_directive_t **sub_tree, ap_directive_t *parent) { const command_rec *cmd; ap_mod_list *ml; char *dir = apr_pstrdup(parms->temp_pool, cmd_line); ap_str_tolower(dir); ml = apr_hash_get(ap_config_hash, dir, APR_HASH_KEY_STRING); if (ml == NULL) { return apr_pstrcat(parms->pool, "Invalid command '", cmd_line, "', perhaps misspelled or defined by a module " "not included in the server configuration", NULL); } for ( ; ml != NULL; ml = ml->next) { const char *retval; cmd = ml->cmd; retval = invoke_cmd(cmd, parms, sub_tree, args); if (retval != NULL) { return retval; } } return NULL; } /* This structure and the following functions are needed for the * table-based config file reading. They are passed to the * cfg_open_custom() routine. */ /* Structure to be passed to cfg_open_custom(): it contains an * index which is incremented from 0 to nelts on each call to * cfg_getline() (which in turn calls arr_elts_getstr()) * and an apr_array_header_t pointer for the string array. */ typedef struct { apr_array_header_t *array; int curr_idx; } arr_elts_param_t; /* arr_elts_getstr() returns the next line from the string array. */ static apr_status_t arr_elts_getstr(void *buf, apr_size_t bufsiz, void *param) { arr_elts_param_t *arr_param = (arr_elts_param_t *)param; const char *elt; /* End of array reached? */ if (++arr_param->curr_idx > arr_param->array->nelts) return APR_EOF; /* return the line */ elt = ((const char **)arr_param->array->elts)[arr_param->curr_idx - 1]; if (apr_cpystrn(buf, elt, bufsiz) - (char *)buf >= bufsiz - 1) return APR_ENOSPC; return APR_SUCCESS; } /* arr_elts_close(): dummy close routine (makes sure no more lines can be read) */ static apr_status_t arr_elts_close(void *param) { arr_elts_param_t *arr_param = (arr_elts_param_t *)param; arr_param->curr_idx = arr_param->array->nelts; return APR_SUCCESS; } static const char *process_command_config(server_rec *s, apr_array_header_t *arr, ap_directive_t **conftree, apr_pool_t *p, apr_pool_t *ptemp) { const char *errmsg; cmd_parms parms; arr_elts_param_t arr_parms; arr_parms.curr_idx = 0; arr_parms.array = arr; if (ap_config_hash == NULL) { rebuild_conf_hash(s->process->pconf, 1); } parms = default_parms; parms.pool = p; parms.temp_pool = ptemp; parms.server = s; parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT); parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI; parms.config_file = ap_pcfg_open_custom(p, "-c/-C directives", &arr_parms, NULL, arr_elts_getstr, arr_elts_close); errmsg = ap_build_config(&parms, p, ptemp, conftree); ap_cfg_closefile(parms.config_file); if (errmsg) { return apr_pstrcat(p, "Syntax error in -C/-c directive: ", errmsg, NULL); } return NULL; } typedef struct { const char *fname; } fnames; static int fname_alphasort(const void *fn1, const void *fn2) { const fnames *f1 = fn1; const fnames *f2 = fn2; return strcmp(f1->fname,f2->fname); } /** * Used by -D DUMP_INCLUDES to output the config file "tree". */ static void dump_config_name(const char *fname, apr_pool_t *p) { unsigned i, recursion, line_number; void *data; apr_file_t *out = NULL; apr_file_open_stdout(&out, p); /* ap_include_sentinel is defined by the core Include directive; use it to * figure out how deep in the stack we are. */ apr_pool_userdata_get(&data, "ap_include_sentinel", p); if (data) { recursion = *(unsigned *)data; } else { recursion = 0; } /* Indent once for each level. */ for (i = 0; i < (recursion + 1); ++i) { apr_file_printf(out, " "); } /* ap_include_lineno is similarly defined to tell us where in the last * config file we were. */ apr_pool_userdata_get(&data, "ap_include_lineno", p); if (data) { line_number = *(unsigned *)data; } else { line_number = 0; } /* Print the line number and the name of the parsed file. */ if (line_number > 0) { apr_file_printf(out, "(%u)", line_number); } else { apr_file_printf(out, "(*)"); } apr_file_printf(out, " %s\n", fname); } AP_DECLARE(const char *) ap_process_resource_config(server_rec *s, const char *fname, ap_directive_t **conftree, apr_pool_t *p, apr_pool_t *ptemp) { ap_configfile_t *cfp; cmd_parms parms; apr_status_t rv; const char *error; parms = default_parms; parms.pool = p; parms.temp_pool = ptemp; parms.server = s; parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT); parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI; rv = ap_pcfg_openfile(&cfp, p, fname); if (rv != APR_SUCCESS) { return apr_psprintf(p, "Could not open configuration file %s: %pm", fname, &rv); } if (ap_exists_config_define("DUMP_INCLUDES")) { dump_config_name(fname, p); } parms.config_file = cfp; error = ap_build_config(&parms, p, ptemp, conftree); ap_cfg_closefile(cfp); if (error) { if (parms.err_directive) return apr_psprintf(p, "Syntax error on line %d of %s: %s", parms.err_directive->line_num, parms.err_directive->filename, error); else return error; } return NULL; } static const char *process_resource_config_nofnmatch(server_rec *s, const char *fname, ap_directive_t **conftree, apr_pool_t *p, apr_pool_t *ptemp, unsigned depth, int optional) { const char *error; apr_status_t rv; if (ap_is_directory(ptemp, fname)) { apr_dir_t *dirp; apr_finfo_t dirent; int current; apr_array_header_t *candidates = NULL; fnames *fnew; char *path = apr_pstrdup(ptemp, fname); if (++depth > AP_MAX_INCLUDE_DIR_DEPTH) { return apr_psprintf(p, "Directory %s exceeds the maximum include " "directory nesting level of %u. You have " "probably a recursion somewhere.", path, AP_MAX_INCLUDE_DIR_DEPTH); } /* * first course of business is to grok all the directory * entries here and store 'em away. Recall we need full pathnames * for this. */ rv = apr_dir_open(&dirp, path, ptemp); if (rv != APR_SUCCESS) { return apr_psprintf(p, "Could not open config directory %s: %pm", path, &rv); } candidates = apr_array_make(ptemp, 1, sizeof(fnames)); while (apr_dir_read(&dirent, APR_FINFO_DIRENT, dirp) == APR_SUCCESS) { /* strip out '.' and '..' */ if (strcmp(dirent.name, ".") && strcmp(dirent.name, "..")) { fnew = (fnames *) apr_array_push(candidates); fnew->fname = ap_make_full_path(ptemp, path, dirent.name); } } apr_dir_close(dirp); if (candidates->nelts != 0) { qsort((void *) candidates->elts, candidates->nelts, sizeof(fnames), fname_alphasort); /* * Now recurse these... we handle errors and subdirectories * via the recursion, which is nice */ for (current = 0; current < candidates->nelts; ++current) { fnew = &((fnames *) candidates->elts)[current]; error = process_resource_config_nofnmatch(s, fnew->fname, conftree, p, ptemp, depth, optional); if (error) { return error; } } } return NULL; } return ap_process_resource_config(s, fname, conftree, p, ptemp); } static const char *process_resource_config_fnmatch(server_rec *s, const char *path, const char *fname, ap_directive_t **conftree, apr_pool_t *p, apr_pool_t *ptemp, unsigned depth, int optional) { const char *rest; apr_status_t rv; apr_dir_t *dirp; apr_finfo_t dirent; apr_array_header_t *candidates = NULL; fnames *fnew; int current; /* find the first part of the filename */ rest = ap_strchr_c(fname, '/'); if (rest) { fname = apr_pstrmemdup(ptemp, fname, rest - fname); rest++; } /* optimisation - if the filename isn't a wildcard, process it directly */ if (!apr_fnmatch_test(fname)) { path = ap_make_full_path(ptemp, path, fname); if (!rest) { return process_resource_config_nofnmatch(s, path, conftree, p, ptemp, 0, optional); } else { return process_resource_config_fnmatch(s, path, rest, conftree, p, ptemp, 0, optional); } } /* * first course of business is to grok all the directory * entries here and store 'em away. Recall we need full pathnames * for this. */ rv = apr_dir_open(&dirp, path, ptemp); if (rv != APR_SUCCESS) { return apr_psprintf(p, "Could not open config directory %s: %pm", path, &rv); } candidates = apr_array_make(ptemp, 1, sizeof(fnames)); while (apr_dir_read(&dirent, APR_FINFO_DIRENT | APR_FINFO_TYPE, dirp) == APR_SUCCESS) { /* strip out '.' and '..' */ if (strcmp(dirent.name, ".") && strcmp(dirent.name, "..") && (apr_fnmatch(fname, dirent.name, APR_FNM_PERIOD) == APR_SUCCESS)) { const char *full_path = ap_make_full_path(ptemp, path, dirent.name); /* If matching internal to path, and we happen to match something * other than a directory, skip it */ if (rest && (rv == APR_SUCCESS) && (dirent.filetype != APR_DIR)) { continue; } fnew = (fnames *) apr_array_push(candidates); fnew->fname = full_path; } } apr_dir_close(dirp); if (candidates->nelts != 0) { const char *error; qsort((void *) candidates->elts, candidates->nelts, sizeof(fnames), fname_alphasort); /* * Now recurse these... we handle errors and subdirectories * via the recursion, which is nice */ for (current = 0; current < candidates->nelts; ++current) { fnew = &((fnames *) candidates->elts)[current]; if (!rest) { error = process_resource_config_nofnmatch(s, fnew->fname, conftree, p, ptemp, 0, optional); } else { error = process_resource_config_fnmatch(s, fnew->fname, rest, conftree, p, ptemp, 0, optional); } if (error) { return error; } } } else { if (!optional) { return apr_psprintf(p, "No matches for the wildcard '%s' in '%s', failing " "(use IncludeOptional if required)", fname, path); } } return NULL; } AP_DECLARE(const char *) ap_process_fnmatch_configs(server_rec *s, const char *fname, ap_directive_t **conftree, apr_pool_t *p, apr_pool_t *ptemp, int optional) { /* XXX: lstat() won't work on the wildcard pattern... */ /* don't require conf/httpd.conf if we have a -C or -c switch */ if ((ap_server_pre_read_config->nelts || ap_server_post_read_config->nelts) && !(strcmp(fname, ap_server_root_relative(ptemp, SERVER_CONFIG_FILE)))) { apr_finfo_t finfo; if (apr_stat(&finfo, fname, APR_FINFO_LINK | APR_FINFO_TYPE, ptemp) != APR_SUCCESS) return NULL; } if (!apr_fnmatch_test(fname)) { return process_resource_config_nofnmatch(s, fname, conftree, p, ptemp, 0, optional); } else { apr_status_t status; const char *rootpath, *filepath = fname; /* locate the start of the directories proper */ status = apr_filepath_root(&rootpath, &filepath, APR_FILEPATH_TRUENAME, ptemp); /* we allow APR_SUCCESS and APR_EINCOMPLETE */ if (APR_ERELATIVE == status) { return apr_pstrcat(p, "Include must have an absolute path, ", fname, NULL); } else if (APR_EBADPATH == status) { return apr_pstrcat(p, "Include has a bad path, ", fname, NULL); } /* walk the filepath */ return process_resource_config_fnmatch(s, rootpath, filepath, conftree, p, ptemp, 0, optional); } } AP_DECLARE(int) ap_process_config_tree(server_rec *s, ap_directive_t *conftree, apr_pool_t *p, apr_pool_t *ptemp) { const char *errmsg; cmd_parms parms; parms = default_parms; parms.pool = p; parms.temp_pool = ptemp; parms.server = s; parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT); parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI; parms.limited = -1; errmsg = ap_walk_config(conftree, &parms, s->lookup_defaults); if (errmsg) { if (parms.err_directive) ap_log_perror(APLOG_MARK, APLOG_STARTUP, 0, p, APLOGNO(00526) "Syntax error on line %d of %s:", parms.err_directive->line_num, parms.err_directive->filename); ap_log_perror(APLOG_MARK, APLOG_STARTUP, 0, p, "%s", errmsg); return HTTP_INTERNAL_SERVER_ERROR; } return OK; } apr_status_t ap_open_htaccess(request_rec *r, const char *dir_name, const char *access_name, ap_configfile_t **conffile, const char **full_name) { *full_name = ap_make_full_path(r->pool, dir_name, access_name); return ap_pcfg_openfile(conffile, r->pool, *full_name); } AP_CORE_DECLARE(int) ap_parse_htaccess(ap_conf_vector_t **result, request_rec *r, int override, int override_opts, apr_table_t *override_list, const char *d, const char *access_names) { ap_configfile_t *f = NULL; cmd_parms parms; const char *filename; const struct htaccess_result *cache; struct htaccess_result *new; ap_conf_vector_t *dc = NULL; apr_status_t status; /* firstly, search cache */ for (cache = r->htaccess; cache != NULL; cache = cache->next) { if (cache->override == override && strcmp(cache->dir, d) == 0) { *result = cache->htaccess; return OK; } } parms = default_parms; parms.override = override; parms.override_opts = override_opts; parms.override_list = override_list; parms.pool = r->pool; parms.temp_pool = r->pool; parms.server = r->server; parms.path = apr_pstrdup(r->pool, d); /* loop through the access names and find the first one */ while (access_names[0]) { const char *access_name = ap_getword_conf(r->pool, &access_names); filename = NULL; status = ap_run_open_htaccess(r, d, access_name, &f, &filename); if (status == APR_SUCCESS) { const char *errmsg; ap_directive_t *temptree = NULL; dc = ap_create_per_dir_config(r->pool); parms.config_file = f; errmsg = ap_build_config(&parms, r->pool, r->pool, &temptree); if (errmsg == NULL) errmsg = ap_walk_config(temptree, &parms, dc); ap_cfg_closefile(f); if (errmsg) { ap_log_rerror(APLOG_MARK, APLOG_ALERT, 0, r, "%s: %s", filename, errmsg); return HTTP_INTERNAL_SERVER_ERROR; } *result = dc; break; } else { if (!APR_STATUS_IS_ENOENT(status) && !APR_STATUS_IS_ENOTDIR(status)) { ap_log_rerror(APLOG_MARK, APLOG_CRIT, status, r, APLOGNO(00529) "%s pcfg_openfile: unable to check htaccess file, " "ensure it is readable and that '%s' " "is executable", filename, d); apr_table_setn(r->notes, "error-notes", "Server unable to read htaccess file, denying " "access to be safe"); return HTTP_FORBIDDEN; } } } /* cache it */ new = apr_palloc(r->pool, sizeof(struct htaccess_result)); new->dir = parms.path; new->override = override; new->override_opts = override_opts; new->htaccess = dc; /* add to head of list */ new->next = r->htaccess; r->htaccess = new; return OK; } AP_CORE_DECLARE(const char *) ap_init_virtual_host(apr_pool_t *p, const char *hostname, server_rec *main_server, server_rec **ps) { server_rec *s = (server_rec *) apr_pcalloc(p, sizeof(server_rec)); /* TODO: this crap belongs in http_core */ s->process = main_server->process; s->server_admin = NULL; s->server_hostname = NULL; s->server_scheme = NULL; s->error_fname = NULL; s->timeout = 0; s->keep_alive_timeout = 0; s->keep_alive = -1; s->keep_alive_max = -1; s->error_log = main_server->error_log; s->log.level = APLOG_UNSET; s->log.module_levels = NULL; /* useful default, otherwise we get a port of 0 on redirects */ s->port = main_server->port; s->next = NULL; s->is_virtual = 1; s->names = apr_array_make(p, 4, sizeof(char **)); s->wild_names = apr_array_make(p, 4, sizeof(char **)); s->module_config = create_empty_config(p); s->lookup_defaults = ap_create_per_dir_config(p); s->limit_req_line = main_server->limit_req_line; s->limit_req_fieldsize = main_server->limit_req_fieldsize; s->limit_req_fields = main_server->limit_req_fields; *ps = s; return ap_parse_vhost_addrs(p, hostname, s); } AP_DECLARE(struct ap_logconf *) ap_new_log_config(apr_pool_t *p, const struct ap_logconf *old) { struct ap_logconf *l = apr_pcalloc(p, sizeof(struct ap_logconf)); if (old) { l->level = old->level; if (old->module_levels) { l->module_levels = apr_pmemdup(p, old->module_levels, conf_vector_length); } } else { l->level = APLOG_UNSET; } return l; } AP_DECLARE(void) ap_merge_log_config(const struct ap_logconf *old_conf, struct ap_logconf *new_conf) { if (new_conf->level != APLOG_UNSET) { /* Setting the main loglevel resets all per-module log levels. * I.e. if new->level has been set, we must ignore old->module_levels. */ return; } new_conf->level = old_conf->level; if (new_conf->module_levels == NULL) { new_conf->module_levels = old_conf->module_levels; } else if (old_conf->module_levels != NULL) { int i; for (i = 0; i < conf_vector_length; i++) { if (new_conf->module_levels[i] == APLOG_UNSET) new_conf->module_levels[i] = old_conf->module_levels[i]; } } } AP_DECLARE(void) ap_fixup_virtual_hosts(apr_pool_t *p, server_rec *main_server) { server_rec *virt; core_dir_config *dconf = ap_get_core_module_config(main_server->lookup_defaults); dconf->log = &main_server->log; for (virt = main_server->next; virt; virt = virt->next) { merge_server_configs(p, main_server->module_config, virt->module_config); virt->lookup_defaults = ap_merge_per_dir_configs(p, main_server->lookup_defaults, virt->lookup_defaults); if (virt->server_admin == NULL) virt->server_admin = main_server->server_admin; if (virt->timeout == 0) virt->timeout = main_server->timeout; if (virt->keep_alive_timeout == 0) virt->keep_alive_timeout = main_server->keep_alive_timeout; if (virt->keep_alive == -1) virt->keep_alive = main_server->keep_alive; if (virt->keep_alive_max == -1) virt->keep_alive_max = main_server->keep_alive_max; ap_merge_log_config(&main_server->log, &virt->log); dconf = ap_get_core_module_config(virt->lookup_defaults); dconf->log = &virt->log; /* XXX: this is really something that should be dealt with by a * post-config api phase */ ap_core_reorder_directories(p, virt); } ap_core_reorder_directories(p, main_server); } /***************************************************************** * * Getting *everything* configured... */ static void init_config_globals(apr_pool_t *p) { /* Global virtual host hash bucket pointers. Init to null. */ ap_init_vhost_config(p); } static server_rec *init_server_config(process_rec *process, apr_pool_t *p) { apr_status_t rv; server_rec *s = (server_rec *) apr_pcalloc(p, sizeof(server_rec)); apr_file_open_stderr(&s->error_log, p); s->process = process; s->port = 0; s->server_admin = DEFAULT_ADMIN; s->server_hostname = NULL; s->server_scheme = NULL; s->error_fname = DEFAULT_ERRORLOG; s->log.level = DEFAULT_LOGLEVEL; s->log.module_levels = NULL; s->limit_req_line = DEFAULT_LIMIT_REQUEST_LINE; s->limit_req_fieldsize = DEFAULT_LIMIT_REQUEST_FIELDSIZE; s->limit_req_fields = DEFAULT_LIMIT_REQUEST_FIELDS; s->timeout = apr_time_from_sec(DEFAULT_TIMEOUT); s->keep_alive_timeout = apr_time_from_sec(DEFAULT_KEEPALIVE_TIMEOUT); s->keep_alive_max = DEFAULT_KEEPALIVE; s->keep_alive = 1; s->next = NULL; s->addrs = apr_pcalloc(p, sizeof(server_addr_rec)); /* NOT virtual host; don't match any real network interface */ rv = apr_sockaddr_info_get(&s->addrs->host_addr, NULL, APR_UNSPEC, 0, 0, p); if (rv != APR_SUCCESS) { /* should we test here for rv being an EAIERR? */ ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, rv, NULL, APLOGNO(00530) "initialisation: bug or getaddrinfo fail"); return NULL; } s->addrs->host_port = 0; /* matches any port */ s->addrs->virthost = ""; /* must be non-NULL */ s->names = s->wild_names = NULL; s->module_config = create_server_config(p, s); s->lookup_defaults = create_default_per_dir_config(p); return s; } static apr_status_t reset_conf_vector_length(void *dummy) { reserved_module_slots = 0; conf_vector_length = max_modules; return APR_SUCCESS; } static int conf_vector_length_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp) { /* * We have loaded all modules that are loaded by EXEC_ON_READ directives. * From now on we reduce the size of the config vectors to what we need, * plus what has been reserved (e.g. by mod_perl) for additional modules * loaded later on. * If max_modules is too small, ap_add_module() will abort. */ if (total_modules + reserved_module_slots < max_modules) { conf_vector_length = total_modules + reserved_module_slots; } apr_pool_cleanup_register(pconf, NULL, reset_conf_vector_length, apr_pool_cleanup_null); return OK; } AP_CORE_DECLARE(void) ap_register_config_hooks(apr_pool_t *p) { ap_hook_pre_config(conf_vector_length_pre_config, NULL, NULL, APR_HOOK_REALLY_LAST); } AP_DECLARE(server_rec*) ap_read_config(process_rec *process, apr_pool_t *ptemp, const char *filename, ap_directive_t **conftree) { const char *confname, *error; apr_pool_t *p = process->pconf; server_rec *s = init_server_config(process, p); if (s == NULL) { return s; } init_config_globals(p); if (ap_exists_config_define("DUMP_INCLUDES")) { apr_file_t *out = NULL; apr_file_open_stdout(&out, p); /* Included files will be dumped as the config is walked; print a * header. */ apr_file_printf(out, "Included configuration files:\n"); } /* All server-wide config files now have the SAME syntax... */ error = process_command_config(s, ap_server_pre_read_config, conftree, p, ptemp); if (error) { ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, 0, NULL, "%s: %s", ap_server_argv0, error); return NULL; } /* process_command_config may change the ServerRoot so * compute this config file name afterwards. */ confname = ap_server_root_relative(p, filename); if (!confname) { ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, APR_EBADPATH, NULL, APLOGNO(00532) "Invalid config file path %s", filename); return NULL; } error = ap_process_resource_config(s, confname, conftree, p, ptemp); if (error) { ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, 0, NULL, "%s: %s", ap_server_argv0, error); return NULL; } error = ap_check_mpm(); if (error) { ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, 0, NULL, APLOGNO(00534) "%s: Configuration error: %s", ap_server_argv0, error); return NULL; } error = process_command_config(s, ap_server_post_read_config, conftree, p, ptemp); if (error) { ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, 0, NULL, "%s: %s", ap_server_argv0, error); return NULL; } return s; } AP_DECLARE(void) ap_single_module_configure(apr_pool_t *p, server_rec *s, module *m) { if (m->create_server_config) ap_set_module_config(s->module_config, m, (*m->create_server_config)(p, s)); if (m->create_dir_config) ap_set_module_config(s->lookup_defaults, m, (*m->create_dir_config)(p, NULL)); } AP_DECLARE(void) ap_run_rewrite_args(process_rec *process) { module *m; for (m = ap_top_module; m; m = m->next) { if (m->rewrite_args) { (*m->rewrite_args)(process); } } } /******************************************************************** * Configuration directives are restricted in terms of where they may * appear in the main configuration files and/or .htaccess files according * to the bitmask req_override in the command_rec structure. * If any of the overrides set in req_override are also allowed in the * context in which the command is read, then the command is allowed. * The context is determined as follows: * * inside *.conf --> override = (RSRC_CONF|OR_ALL)&~(OR_AUTHCFG|OR_LIMIT); * within or --> override = OR_ALL|ACCESS_CONF; * within .htaccess --> override = AllowOverride for current directory; * * the result is, well, a rather confusing set of possibilities for when * a particular directive is allowed to be used. This procedure prints * in English where the given (pc) directive can be used. */ static void show_overrides(const command_rec *pc, module *pm) { int n = 0; printf("\tAllowed in *.conf "); if ((pc->req_override & (OR_OPTIONS | OR_FILEINFO | OR_INDEXES)) || ((pc->req_override & RSRC_CONF) && ((pc->req_override & (ACCESS_CONF | OR_AUTHCFG | OR_LIMIT))))) { printf("anywhere"); } else if (pc->req_override & RSRC_CONF) { printf("only outside , , , or "); } else { printf("only inside , , , or "); } /* Warn if the directive is allowed inside or .htaccess * but module doesn't support per-dir configuration */ if ((pc->req_override & (OR_ALL | ACCESS_CONF)) && !pm->create_dir_config) printf(" [no per-dir config]"); if (pc->req_override & OR_ALL) { printf(" and in .htaccess\n\twhen AllowOverride"); if ((pc->req_override & OR_ALL) == OR_ALL) { printf(" isn't None"); } else { printf(" includes "); if (pc->req_override & OR_AUTHCFG) { if (n++) printf(" or "); printf("AuthConfig"); } if (pc->req_override & OR_LIMIT) { if (n++) printf(" or "); printf("Limit"); } if (pc->req_override & OR_OPTIONS) { if (n++) printf(" or "); printf("Options"); } if (pc->req_override & OR_FILEINFO) { if (n++) printf(" or "); printf("FileInfo"); } if (pc->req_override & OR_INDEXES) { if (n++) printf(" or "); printf("Indexes"); } } } printf("\n"); } /* Show the preloaded configuration directives, the help string explaining * the directive arguments, in what module they are handled, and in * what parts of the configuration they are allowed. Used for httpd -L. */ AP_DECLARE(void) ap_show_directives(void) { const command_rec *pc; int n; for (n = 0; ap_loaded_modules[n]; ++n) { for (pc = ap_loaded_modules[n]->cmds; pc && pc->name; ++pc) { printf("%s (%s)\n", pc->name, ap_loaded_modules[n]->name); if (pc->errmsg) printf("\t%s\n", pc->errmsg); show_overrides(pc, ap_loaded_modules[n]); } } } /* Show the preloaded module names. Used for httpd -l. */ AP_DECLARE(void) ap_show_modules(void) { int n; printf("Compiled in modules:\n"); for (n = 0; ap_loaded_modules[n]; ++n) printf(" %s\n", ap_loaded_modules[n]->name); } AP_DECLARE(void *) ap_retained_data_get(const char *key) { void *retained; apr_pool_userdata_get((void *)&retained, key, ap_pglobal); return retained; } AP_DECLARE(void *) ap_retained_data_create(const char *key, apr_size_t size) { void *retained; retained = apr_pcalloc(ap_pglobal, size); apr_pool_userdata_set((const void *)retained, key, apr_pool_cleanup_null, ap_pglobal); return retained; } static int count_directives_sub(const char *directive, ap_directive_t *current) { int count = 0; while (current != NULL) { if (current->first_child != NULL) count += count_directives_sub(directive, current->first_child); if (strcasecmp(current->directive, directive) == 0) count++; current = current->next; } return count; } AP_DECLARE(void) ap_reserve_module_slots(int count) { reserved_module_slots += count; } AP_DECLARE(void) ap_reserve_module_slots_directive(const char *directive) { ap_reserve_module_slots(count_directives_sub(directive, ap_conftree)); }