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Diffstat (limited to 'server/config.c')
| -rw-r--r-- | server/config.c | 2738 |
1 files changed, 2738 insertions, 0 deletions
diff --git a/server/config.c b/server/config.c new file mode 100644 index 0000000..f815b22 --- /dev/null +++ b/server/config.c @@ -0,0 +1,2738 @@ +/* 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, + server_rec *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_config; + 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]) { + if (df && modp->create_server_config + && (ap_get_module_flags(modp) & + AP_MODULE_FLAG_ALWAYS_MERGE)) { + virt_vector[i] = (*modp->create_server_config)(p, virt); + } + else { + virt_vector[i] = base_vector[i]; + df = NULL; + } + } + 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 if (parms->directive && parms->directive->parent) { + return apr_pstrcat(parms->pool, cmd->name, " not allowed in ", + parms->directive->parent->directive, ">", + " context", 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 </", + (*curr_parent)->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, "</", 2) + && (strcasecmp(vb.buf + 2, bracket) == 0) + && (*curr_parent == NULL)) { + break; + } + retval = ap_build_config_sub(p, temp_pool, vb.buf, parms, current, + curr_parent, &sub_tree); + if (retval != NULL) + return retval; + + if (sub_tree == NULL) { + sub_tree = *curr_parent; + } + + if (sub_tree == NULL) { + sub_tree = *current; + } + } + ap_varbuf_free(&vb); + if (rc != APR_EOF && rc != APR_SUCCESS) + return ap_pcfg_strerror(temp_pool, parms->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 </", + directive + 1, "> 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 </", + directive + 1, "> 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; + } + else if (optional) { + /* If the optinal flag is set (like for IncludeOptional) we can + * tolerate that no file or directory is present and bail out. + */ + apr_finfo_t finfo; + if (apr_stat(&finfo, fname, APR_FINFO_TYPE, ptemp) != APR_SUCCESS + || finfo.filetype == APR_NOFILE) + 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) { + /* If the directory doesn't exist and the optional flag is set + * there is no need to return an error. + */ + if (rv == APR_ENOENT && optional) { + return NULL; + } + 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 && (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); + + 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 <Directory> or <Location> --> 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 <Directory>, <Files>, <Location>, or <If>"); + } + else { + printf("only inside <Directory>, <Files>, <Location>, or <If>"); + } + + /* Warn if the directive is allowed inside <Directory> 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(int) ap_exists_directive(apr_pool_t *p, const char *name) +{ + char *lname = apr_pstrdup(p, name); + + ap_str_tolower(lname); + + return ap_config_hash && + apr_hash_get(ap_config_hash, lname, APR_HASH_KEY_STRING) != NULL; +} + +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)); +} |