| /* 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. |
| */ |
| |
| #ifdef WIN32 |
| |
| #include "httpd.h" |
| #include "http_main.h" |
| #include "http_log.h" |
| #include "http_config.h" /* for read_config */ |
| #include "http_core.h" /* for get_remote_host */ |
| #include "http_connection.h" |
| #include "apr_portable.h" |
| #include "apr_thread_proc.h" |
| #include "apr_getopt.h" |
| #include "apr_strings.h" |
| #include "apr_lib.h" |
| #include "apr_shm.h" |
| #include "apr_thread_mutex.h" |
| #include "ap_mpm.h" |
| #include "apr_general.h" |
| #include "ap_config.h" |
| #include "ap_listen.h" |
| #include "mpm_default.h" |
| #include "mpm_winnt.h" |
| #include "mpm_common.h" |
| #include <malloc.h> |
| #include "apr_atomic.h" |
| #include "scoreboard.h" |
| |
| #ifdef __WATCOMC__ |
| #define _environ environ |
| #endif |
| |
| #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION /* missing on MinGW */ |
| #define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000 |
| #endif |
| |
| /* Because ap_setup_listeners() is skipped in the child, any merging |
| * of [::]:80 and 0.0.0.0:80 for AP_ENABLE_V4_MAPPED in the parent |
| * won't have taken place in the child, so the child will expect to |
| * read two sockets for "Listen 80" but the parent will send only |
| * one. |
| */ |
| #ifdef AP_ENABLE_V4_MAPPED |
| #error The WinNT MPM does not currently support AP_ENABLE_V4_MAPPED |
| #endif |
| |
| /* scoreboard.c does the heavy lifting; all we do is create the child |
| * score by moving a handle down the pipe into the child's stdin. |
| */ |
| extern apr_shm_t *ap_scoreboard_shm; |
| |
| /* my_generation is returned to the scoreboard code */ |
| static volatile ap_generation_t my_generation=0; |
| |
| /* Definitions of WINNT MPM specific config globals */ |
| static HANDLE shutdown_event; /* used to signal the parent to shutdown */ |
| static HANDLE restart_event; /* used to signal the parent to restart */ |
| |
| static int one_process = 0; |
| static char const* signal_arg = NULL; |
| |
| OSVERSIONINFO osver; /* VER_PLATFORM_WIN32_NT */ |
| |
| /* set by child_main to STACK_SIZE_PARAM_IS_A_RESERVATION for NT >= 5.1 (XP/2003) */ |
| DWORD stack_res_flag; |
| |
| static DWORD parent_pid; |
| DWORD my_pid; |
| |
| /* used by parent to signal the child to start and exit */ |
| apr_proc_mutex_t *start_mutex; |
| HANDLE exit_event; |
| |
| int ap_threads_per_child = 0; |
| static int thread_limit = 0; |
| static int first_thread_limit = 0; |
| int winnt_mpm_state = AP_MPMQ_STARTING; |
| |
| /* shared by service.c as global, although |
| * perhaps it should be private. |
| */ |
| apr_pool_t *pconf; |
| |
| /* Only one of these, the pipe from our parent, meant only for |
| * one child worker's consumption (not to be inherited!) |
| * XXX: decorate this name for the trunk branch, was left simplified |
| * only to make the 2.2 patch trivial to read. |
| */ |
| static HANDLE pipe; |
| |
| /* |
| * Command processors |
| */ |
| |
| static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, const char *arg) |
| { |
| const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); |
| if (err != NULL) { |
| return err; |
| } |
| |
| ap_threads_per_child = atoi(arg); |
| return NULL; |
| } |
| static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) |
| { |
| const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); |
| if (err != NULL) { |
| return err; |
| } |
| |
| thread_limit = atoi(arg); |
| return NULL; |
| } |
| |
| static const command_rec winnt_cmds[] = { |
| LISTEN_COMMANDS, |
| AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF, |
| "Number of threads each child creates" ), |
| AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF, |
| "Maximum worker threads in a server for this run of Apache"), |
| { NULL } |
| }; |
| |
| static void winnt_note_child_started(int slot, pid_t pid) |
| { |
| ap_scoreboard_image->parent[slot].pid = pid; |
| ap_scoreboard_image->parent[slot].generation = my_generation; |
| ap_run_child_status(ap_server_conf, |
| ap_scoreboard_image->parent[slot].pid, |
| my_generation, slot, MPM_CHILD_STARTED); |
| } |
| |
| static void winnt_note_child_killed(int slot) |
| { |
| ap_run_child_status(ap_server_conf, |
| ap_scoreboard_image->parent[slot].pid, |
| ap_scoreboard_image->parent[slot].generation, |
| slot, MPM_CHILD_EXITED); |
| ap_scoreboard_image->parent[slot].pid = 0; |
| } |
| |
| /* |
| * Signalling Apache on NT. |
| * |
| * Under Unix, Apache can be told to shutdown or restart by sending various |
| * signals (HUP, USR, TERM). On NT we don't have easy access to signals, so |
| * we use "events" instead. The parent apache process goes into a loop |
| * where it waits forever for a set of events. Two of those events are |
| * called |
| * |
| * apPID_shutdown |
| * apPID_restart |
| * |
| * (where PID is the PID of the apache parent process). When one of these |
| * is signalled, the Apache parent performs the appropriate action. The events |
| * can become signalled through internal Apache methods (e.g. if the child |
| * finds a fatal error and needs to kill its parent), via the service |
| * control manager (the control thread will signal the shutdown event when |
| * requested to stop the Apache service), from the -k Apache command line, |
| * or from any external program which finds the Apache PID from the |
| * httpd.pid file. |
| * |
| * The signal_parent() function, below, is used to signal one of these events. |
| * It can be called by any child or parent process, since it does not |
| * rely on global variables. |
| * |
| * On entry, type gives the event to signal. 0 means shutdown, 1 means |
| * graceful restart. |
| */ |
| /* |
| * Initialise the signal names, in the global variables signal_name_prefix, |
| * signal_restart_name and signal_shutdown_name. |
| */ |
| #define MAX_SIGNAL_NAME 30 /* Long enough for apPID_shutdown, where PID is an int */ |
| static char signal_name_prefix[MAX_SIGNAL_NAME]; |
| static char signal_restart_name[MAX_SIGNAL_NAME]; |
| static char signal_shutdown_name[MAX_SIGNAL_NAME]; |
| static void setup_signal_names(char *prefix) |
| { |
| apr_snprintf(signal_name_prefix, sizeof(signal_name_prefix), prefix); |
| apr_snprintf(signal_shutdown_name, sizeof(signal_shutdown_name), |
| "%s_shutdown", signal_name_prefix); |
| apr_snprintf(signal_restart_name, sizeof(signal_restart_name), |
| "%s_restart", signal_name_prefix); |
| } |
| |
| AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type) |
| { |
| HANDLE e; |
| char *signal_name; |
| |
| if (parent_pid == my_pid) { |
| switch(type) { |
| case SIGNAL_PARENT_SHUTDOWN: |
| { |
| SetEvent(shutdown_event); |
| break; |
| } |
| /* This MPM supports only graceful restarts right now */ |
| case SIGNAL_PARENT_RESTART: |
| case SIGNAL_PARENT_RESTART_GRACEFUL: |
| { |
| SetEvent(restart_event); |
| break; |
| } |
| } |
| return; |
| } |
| |
| switch(type) { |
| case SIGNAL_PARENT_SHUTDOWN: |
| { |
| signal_name = signal_shutdown_name; |
| break; |
| } |
| /* This MPM supports only graceful restarts right now */ |
| case SIGNAL_PARENT_RESTART: |
| case SIGNAL_PARENT_RESTART_GRACEFUL: |
| { |
| signal_name = signal_restart_name; |
| break; |
| } |
| default: |
| return; |
| } |
| |
| e = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_name); |
| if (!e) { |
| /* Um, problem, can't signal the parent, which means we can't |
| * signal ourselves to die. Ignore for now... |
| */ |
| ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00382) |
| "OpenEvent on %s event", signal_name); |
| return; |
| } |
| if (SetEvent(e) == 0) { |
| /* Same problem as above */ |
| ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00383) |
| "SetEvent on %s event", signal_name); |
| CloseHandle(e); |
| return; |
| } |
| CloseHandle(e); |
| } |
| |
| |
| /* |
| * Passed the following handles [in sync with send_handles_to_child()] |
| * |
| * ready event [signal the parent immediately, then close] |
| * exit event [save to poll later] |
| * start mutex [signal from the parent to begin accept()] |
| * scoreboard shm handle [to recreate the ap_scoreboard] |
| */ |
| static void get_handles_from_parent(server_rec *s, HANDLE *child_exit_event, |
| apr_proc_mutex_t **child_start_mutex, |
| apr_shm_t **scoreboard_shm) |
| { |
| HANDLE hScore; |
| HANDLE ready_event; |
| HANDLE os_start; |
| DWORD BytesRead; |
| void *sb_shared; |
| apr_status_t rv; |
| |
| /* *** We now do this way back in winnt_rewrite_args |
| * pipe = GetStdHandle(STD_INPUT_HANDLE); |
| */ |
| if (!ReadFile(pipe, &ready_event, sizeof(HANDLE), |
| &BytesRead, (LPOVERLAPPED) NULL) |
| || (BytesRead != sizeof(HANDLE))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00384) |
| "Child: Unable to retrieve the ready event from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| SetEvent(ready_event); |
| CloseHandle(ready_event); |
| |
| if (!ReadFile(pipe, child_exit_event, sizeof(HANDLE), |
| &BytesRead, (LPOVERLAPPED) NULL) |
| || (BytesRead != sizeof(HANDLE))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00385) |
| "Child: Unable to retrieve the exit event from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| if (!ReadFile(pipe, &os_start, sizeof(os_start), |
| &BytesRead, (LPOVERLAPPED) NULL) |
| || (BytesRead != sizeof(os_start))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00386) |
| "Child: Unable to retrieve the start_mutex from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| *child_start_mutex = NULL; |
| if ((rv = apr_os_proc_mutex_put(child_start_mutex, &os_start, s->process->pool)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00387) |
| "Child: Unable to access the start_mutex from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| if (!ReadFile(pipe, &hScore, sizeof(hScore), |
| &BytesRead, (LPOVERLAPPED) NULL) |
| || (BytesRead != sizeof(hScore))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00388) |
| "Child: Unable to retrieve the scoreboard from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| *scoreboard_shm = NULL; |
| if ((rv = apr_os_shm_put(scoreboard_shm, &hScore, s->process->pool)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00389) |
| "Child: Unable to access the scoreboard from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| rv = ap_reopen_scoreboard(s->process->pool, scoreboard_shm, 1); |
| if (rv || !(sb_shared = apr_shm_baseaddr_get(*scoreboard_shm))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00390) |
| "Child: Unable to reopen the scoreboard from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| /* We must 'initialize' the scoreboard to relink all the |
| * process-local pointer arrays into the shared memory block. |
| */ |
| ap_init_scoreboard(sb_shared); |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00391) |
| "Child: Retrieved our scoreboard from the parent."); |
| } |
| |
| |
| static int send_handles_to_child(apr_pool_t *p, |
| HANDLE child_ready_event, |
| HANDLE child_exit_event, |
| apr_proc_mutex_t *child_start_mutex, |
| apr_shm_t *scoreboard_shm, |
| HANDLE hProcess, |
| apr_file_t *child_in) |
| { |
| apr_status_t rv; |
| HANDLE hCurrentProcess = GetCurrentProcess(); |
| HANDLE hDup; |
| HANDLE os_start; |
| HANDLE hScore; |
| apr_size_t BytesWritten; |
| |
| if ((rv = apr_file_write_full(child_in, &my_generation, |
| sizeof(my_generation), NULL)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(02964) |
| "Parent: Unable to send its generation to the child"); |
| return -1; |
| } |
| if (!DuplicateHandle(hCurrentProcess, child_ready_event, hProcess, &hDup, |
| EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00392) |
| "Parent: Unable to duplicate the ready event handle for the child"); |
| return -1; |
| } |
| if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00393) |
| "Parent: Unable to send the exit event handle to the child"); |
| return -1; |
| } |
| if (!DuplicateHandle(hCurrentProcess, child_exit_event, hProcess, &hDup, |
| EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00394) |
| "Parent: Unable to duplicate the exit event handle for the child"); |
| return -1; |
| } |
| if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00395) |
| "Parent: Unable to send the exit event handle to the child"); |
| return -1; |
| } |
| if ((rv = apr_os_proc_mutex_get(&os_start, child_start_mutex)) != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00396) |
| "Parent: Unable to retrieve the start mutex for the child"); |
| return -1; |
| } |
| if (!DuplicateHandle(hCurrentProcess, os_start, hProcess, &hDup, |
| SYNCHRONIZE, FALSE, 0)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00397) |
| "Parent: Unable to duplicate the start mutex to the child"); |
| return -1; |
| } |
| if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00398) |
| "Parent: Unable to send the start mutex to the child"); |
| return -1; |
| } |
| if ((rv = apr_os_shm_get(&hScore, scoreboard_shm)) != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00399) |
| "Parent: Unable to retrieve the scoreboard handle for the child"); |
| return -1; |
| } |
| if (!DuplicateHandle(hCurrentProcess, hScore, hProcess, &hDup, |
| FILE_MAP_READ | FILE_MAP_WRITE, FALSE, 0)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00400) |
| "Parent: Unable to duplicate the scoreboard handle to the child"); |
| return -1; |
| } |
| if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00401) |
| "Parent: Unable to send the scoreboard handle to the child"); |
| return -1; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00402) |
| "Parent: Sent the scoreboard to the child"); |
| return 0; |
| } |
| |
| |
| /* |
| * get_listeners_from_parent() |
| * The listen sockets are opened in the parent. This function, which runs |
| * exclusively in the child process, receives them from the parent and |
| * makes them available in the child. |
| */ |
| static void get_listeners_from_parent(server_rec *s) |
| { |
| WSAPROTOCOL_INFO WSAProtocolInfo; |
| ap_listen_rec *lr; |
| DWORD BytesRead; |
| int lcnt = 0; |
| SOCKET nsd; |
| |
| /* Set up a default listener if necessary */ |
| if (ap_listeners == NULL) { |
| ap_listen_rec *lr; |
| lr = apr_palloc(s->process->pool, sizeof(ap_listen_rec)); |
| lr->sd = NULL; |
| lr->next = ap_listeners; |
| ap_listeners = lr; |
| } |
| |
| /* Open the pipe to the parent process to receive the inherited socket |
| * data. The sockets have been set to listening in the parent process. |
| * |
| * *** We now do this way back in winnt_rewrite_args |
| * pipe = GetStdHandle(STD_INPUT_HANDLE); |
| */ |
| for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) { |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00403) |
| "Child: Waiting for data for listening socket %pI", |
| lr->bind_addr); |
| if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO), |
| &BytesRead, (LPOVERLAPPED) NULL)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00404) |
| "Child: Unable to read socket data from parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| nsd = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, |
| &WSAProtocolInfo, 0, 0); |
| if (nsd == INVALID_SOCKET) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00405) |
| "Child: WSASocket failed to open the inherited socket"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| if (!SetHandleInformation((HANDLE)nsd, HANDLE_FLAG_INHERIT, 0)) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00406) |
| "Child: SetHandleInformation failed"); |
| } |
| apr_os_sock_put(&lr->sd, &nsd, s->process->pool); |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00407) |
| "Child: retrieved %d listeners from parent", lcnt); |
| } |
| |
| |
| static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId, |
| apr_file_t *child_in) |
| { |
| apr_status_t rv; |
| int lcnt = 0; |
| ap_listen_rec *lr; |
| LPWSAPROTOCOL_INFO lpWSAProtocolInfo; |
| apr_size_t BytesWritten; |
| |
| /* Run the chain of open sockets. For each socket, duplicate it |
| * for the target process then send the WSAPROTOCOL_INFO |
| * (returned by dup socket) to the child. |
| */ |
| for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) { |
| apr_os_sock_t nsd; |
| lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO)); |
| apr_os_sock_get(&nsd, lr->sd); |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00408) |
| "Parent: Duplicating socket %d (%pI) and sending it to child process %lu", |
| nsd, lr->bind_addr, dwProcessId); |
| if (WSADuplicateSocket(nsd, dwProcessId, |
| lpWSAProtocolInfo) == SOCKET_ERROR) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00409) |
| "Parent: WSADuplicateSocket failed for socket %d. Check the FAQ.", nsd); |
| return -1; |
| } |
| |
| if ((rv = apr_file_write_full(child_in, lpWSAProtocolInfo, |
| sizeof(WSAPROTOCOL_INFO), &BytesWritten)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00410) |
| "Parent: Unable to write duplicated socket %d to the child.", nsd); |
| return -1; |
| } |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00411) |
| "Parent: Sent %d listeners to child %lu", lcnt, dwProcessId); |
| return 0; |
| } |
| |
| enum waitlist_e { |
| waitlist_ready = 0, |
| waitlist_term = 1 |
| }; |
| |
| static int create_process(apr_pool_t *p, HANDLE *child_proc, HANDLE *child_exit_event, |
| DWORD *child_pid) |
| { |
| /* These NEVER change for the lifetime of this parent |
| */ |
| static char **args = NULL; |
| static char pidbuf[28]; |
| |
| apr_status_t rv; |
| apr_pool_t *ptemp; |
| apr_procattr_t *attr; |
| apr_proc_t new_child; |
| HANDLE hExitEvent; |
| HANDLE waitlist[2]; /* see waitlist_e */ |
| char *cmd; |
| char *cwd; |
| char **env; |
| int envc; |
| |
| apr_pool_create_ex(&ptemp, p, NULL, NULL); |
| apr_pool_tag(ptemp, "create_process"); |
| |
| /* Build the command line. Should look something like this: |
| * C:/apache/bin/httpd.exe -f ap_server_confname |
| * First, get the path to the executable... |
| */ |
| apr_procattr_create(&attr, ptemp); |
| apr_procattr_cmdtype_set(attr, APR_PROGRAM); |
| apr_procattr_detach_set(attr, 1); |
| if (((rv = apr_filepath_get(&cwd, 0, ptemp)) != APR_SUCCESS) |
| || ((rv = apr_procattr_dir_set(attr, cwd)) != APR_SUCCESS)) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00412) |
| "Parent: Failed to get the current path"); |
| } |
| |
| if (!args) { |
| /* Build the args array, only once since it won't change |
| * for the lifetime of this parent process. |
| */ |
| if ((rv = ap_os_proc_filepath(&cmd, ptemp)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, ERROR_BAD_PATHNAME, ap_server_conf, APLOGNO(00413) |
| "Parent: Failed to get full path of %s", |
| ap_server_conf->process->argv[0]); |
| apr_pool_destroy(ptemp); |
| return -1; |
| } |
| |
| args = ap_malloc((ap_server_conf->process->argc + 1) * sizeof (char*)); |
| memcpy(args + 1, ap_server_conf->process->argv + 1, |
| (ap_server_conf->process->argc - 1) * sizeof (char*)); |
| args[0] = ap_malloc(strlen(cmd) + 1); |
| strcpy(args[0], cmd); |
| args[ap_server_conf->process->argc] = NULL; |
| } |
| else { |
| cmd = args[0]; |
| } |
| |
| /* Create a pipe to send handles to the child */ |
| if ((rv = apr_procattr_io_set(attr, APR_FULL_BLOCK, |
| APR_NO_PIPE, APR_NO_PIPE)) != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00414) |
| "Parent: Unable to create child stdin pipe."); |
| apr_pool_destroy(ptemp); |
| return -1; |
| } |
| |
| /* Create the child_ready_event */ |
| waitlist[waitlist_ready] = CreateEvent(NULL, TRUE, FALSE, NULL); |
| if (!waitlist[waitlist_ready]) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00415) |
| "Parent: Could not create ready event for child process"); |
| apr_pool_destroy (ptemp); |
| return -1; |
| } |
| |
| /* Create the child_exit_event */ |
| hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
| if (!hExitEvent) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00416) |
| "Parent: Could not create exit event for child process"); |
| apr_pool_destroy(ptemp); |
| CloseHandle(waitlist[waitlist_ready]); |
| return -1; |
| } |
| |
| /* Build the env array */ |
| for (envc = 0; _environ[envc]; ++envc) { |
| ; |
| } |
| env = apr_palloc(ptemp, (envc + 2) * sizeof (char*)); |
| memcpy(env, _environ, envc * sizeof (char*)); |
| apr_snprintf(pidbuf, sizeof(pidbuf), "AP_PARENT_PID=%lu", parent_pid); |
| env[envc] = pidbuf; |
| env[envc + 1] = NULL; |
| |
| rv = apr_proc_create(&new_child, cmd, (const char * const *)args, |
| (const char * const *)env, attr, ptemp); |
| if (rv != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00417) |
| "Parent: Failed to create the child process."); |
| apr_pool_destroy(ptemp); |
| CloseHandle(hExitEvent); |
| CloseHandle(waitlist[waitlist_ready]); |
| CloseHandle(new_child.hproc); |
| return -1; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00418) |
| "Parent: Created child process %d", new_child.pid); |
| |
| if (send_handles_to_child(ptemp, waitlist[waitlist_ready], hExitEvent, |
| start_mutex, ap_scoreboard_shm, |
| new_child.hproc, new_child.in)) { |
| /* |
| * This error is fatal, mop up the child and move on |
| * We toggle the child's exit event to cause this child |
| * to quit even as it is attempting to start. |
| */ |
| SetEvent(hExitEvent); |
| apr_pool_destroy(ptemp); |
| CloseHandle(hExitEvent); |
| CloseHandle(waitlist[waitlist_ready]); |
| CloseHandle(new_child.hproc); |
| return -1; |
| } |
| |
| /* Important: |
| * Give the child process a chance to run before dup'ing the sockets. |
| * We have already set the listening sockets noninheritable, but if |
| * WSADuplicateSocket runs before the child process initializes |
| * the listeners will be inherited anyway. |
| */ |
| waitlist[waitlist_term] = new_child.hproc; |
| rv = WaitForMultipleObjects(2, waitlist, FALSE, INFINITE); |
| CloseHandle(waitlist[waitlist_ready]); |
| if (rv != WAIT_OBJECT_0) { |
| /* |
| * Outch... that isn't a ready signal. It's dead, Jim! |
| */ |
| SetEvent(hExitEvent); |
| apr_pool_destroy(ptemp); |
| CloseHandle(hExitEvent); |
| CloseHandle(new_child.hproc); |
| return -1; |
| } |
| |
| if (send_listeners_to_child(ptemp, new_child.pid, new_child.in)) { |
| /* |
| * This error is fatal, mop up the child and move on |
| * We toggle the child's exit event to cause this child |
| * to quit even as it is attempting to start. |
| */ |
| SetEvent(hExitEvent); |
| apr_pool_destroy(ptemp); |
| CloseHandle(hExitEvent); |
| CloseHandle(new_child.hproc); |
| return -1; |
| } |
| |
| apr_file_close(new_child.in); |
| |
| *child_exit_event = hExitEvent; |
| *child_proc = new_child.hproc; |
| *child_pid = new_child.pid; |
| |
| return 0; |
| } |
| |
| /*********************************************************************** |
| * master_main() |
| * master_main() runs in the parent process. It creates the child |
| * process which handles HTTP requests then waits on one of three |
| * events: |
| * |
| * restart_event |
| * ------------- |
| * The restart event causes master_main to start a new child process and |
| * tells the old child process to exit (by setting the child_exit_event). |
| * The restart event is set as a result of one of the following: |
| * 1. An apache -k restart command on the command line |
| * 2. A command received from Windows service manager which gets |
| * translated into an ap_signal_parent(SIGNAL_PARENT_RESTART) |
| * call by code in service.c. |
| * 3. The child process calling ap_signal_parent(SIGNAL_PARENT_RESTART) |
| * as a result of hitting MaxConnectionsPerChild. |
| * |
| * shutdown_event |
| * -------------- |
| * The shutdown event causes master_main to tell the child process to |
| * exit and that the server is shutting down. The shutdown event is |
| * set as a result of one of the following: |
| * 1. An apache -k shutdown command on the command line |
| * 2. A command received from Windows service manager which gets |
| * translated into an ap_signal_parent(SIGNAL_PARENT_SHUTDOWN) |
| * call by code in service.c. |
| * |
| * child process handle |
| * -------------------- |
| * The child process handle will be signaled if the child process |
| * exits for any reason. In a normal running server, the signaling |
| * of this event means that the child process has exited prematurely |
| * due to a seg fault or other irrecoverable error. For server |
| * robustness, master_main will restart the child process under this |
| * condition. |
| * |
| * master_main uses the child_exit_event to signal the child process |
| * to exit. |
| **********************************************************************/ |
| #define NUM_WAIT_HANDLES 3 |
| #define CHILD_HANDLE 0 |
| #define SHUTDOWN_HANDLE 1 |
| #define RESTART_HANDLE 2 |
| static int master_main(server_rec *s, HANDLE shutdown_event, HANDLE restart_event) |
| { |
| int rv, cld; |
| int child_created; |
| int restart_pending; |
| int shutdown_pending; |
| HANDLE child_exit_event; |
| HANDLE event_handles[NUM_WAIT_HANDLES]; |
| DWORD child_pid; |
| |
| child_created = restart_pending = shutdown_pending = 0; |
| |
| event_handles[SHUTDOWN_HANDLE] = shutdown_event; |
| event_handles[RESTART_HANDLE] = restart_event; |
| |
| /* Create a single child process */ |
| rv = create_process(pconf, &event_handles[CHILD_HANDLE], |
| &child_exit_event, &child_pid); |
| if (rv < 0) |
| { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00419) |
| "master_main: create child process failed. Exiting."); |
| shutdown_pending = 1; |
| goto die_now; |
| } |
| |
| child_created = 1; |
| |
| if (!strcasecmp(signal_arg, "runservice")) { |
| mpm_service_started(); |
| } |
| |
| /* Update the scoreboard. Note that there is only a single active |
| * child at once. |
| */ |
| ap_scoreboard_image->parent[0].quiescing = 0; |
| winnt_note_child_started(/* slot */ 0, child_pid); |
| |
| /* Wait for shutdown or restart events or for child death */ |
| winnt_mpm_state = AP_MPMQ_RUNNING; |
| rv = WaitForMultipleObjects(NUM_WAIT_HANDLES, (HANDLE *) event_handles, FALSE, INFINITE); |
| cld = rv - WAIT_OBJECT_0; |
| if (rv == WAIT_FAILED) { |
| /* Something serious is wrong */ |
| ap_log_error(APLOG_MARK,APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00420) |
| "master_main: WaitForMultipleObjects WAIT_FAILED -- doing server shutdown"); |
| shutdown_pending = 1; |
| } |
| else if (rv == WAIT_TIMEOUT) { |
| /* Hey, this cannot happen */ |
| ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00421) |
| "master_main: WaitForMultipleObjects with INFINITE wait exited with WAIT_TIMEOUT"); |
| shutdown_pending = 1; |
| } |
| else if (cld == SHUTDOWN_HANDLE) { |
| /* shutdown_event signalled */ |
| shutdown_pending = 1; |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, s, APLOGNO(00422) |
| "Parent: Received shutdown signal -- Shutting down the server."); |
| if (ResetEvent(shutdown_event) == 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00423) |
| "ResetEvent(shutdown_event)"); |
| } |
| } |
| else if (cld == RESTART_HANDLE) { |
| /* Received a restart event. Prepare the restart_event to be reused |
| * then signal the child process to exit. |
| */ |
| restart_pending = 1; |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, APLOGNO(00424) |
| "Parent: Received restart signal -- Restarting the server."); |
| if (ResetEvent(restart_event) == 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00425) |
| "Parent: ResetEvent(restart_event) failed."); |
| } |
| if (SetEvent(child_exit_event) == 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00426) |
| "Parent: SetEvent for child process event %pp failed.", |
| event_handles[CHILD_HANDLE]); |
| } |
| /* Don't wait to verify that the child process really exits, |
| * just move on with the restart. |
| */ |
| CloseHandle(event_handles[CHILD_HANDLE]); |
| event_handles[CHILD_HANDLE] = NULL; |
| } |
| else { |
| /* The child process exited prematurely due to a fatal error. */ |
| DWORD exitcode; |
| if (!GetExitCodeProcess(event_handles[CHILD_HANDLE], &exitcode)) { |
| /* HUH? We did exit, didn't we? */ |
| exitcode = APEXIT_CHILDFATAL; |
| } |
| if ( exitcode == APEXIT_CHILDFATAL |
| || exitcode == APEXIT_CHILDINIT |
| || exitcode == APEXIT_INIT) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, 0, ap_server_conf, APLOGNO(00427) |
| "Parent: child process %lu exited with status %lu -- Aborting.", |
| child_pid, exitcode); |
| shutdown_pending = 1; |
| } |
| else { |
| int i; |
| restart_pending = 1; |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00428) |
| "Parent: child process %lu exited with status %lu -- Restarting.", |
| child_pid, exitcode); |
| for (i = 0; i < ap_threads_per_child; i++) { |
| ap_update_child_status_from_indexes(0, i, SERVER_DEAD, NULL); |
| } |
| } |
| CloseHandle(event_handles[CHILD_HANDLE]); |
| event_handles[CHILD_HANDLE] = NULL; |
| } |
| |
| winnt_note_child_killed(/* slot */ 0); |
| |
| if (restart_pending) { |
| ++my_generation; |
| ap_scoreboard_image->global->running_generation = my_generation; |
| } |
| die_now: |
| if (shutdown_pending) |
| { |
| int timeout = 30000; /* Timeout is milliseconds */ |
| winnt_mpm_state = AP_MPMQ_STOPPING; |
| |
| if (!child_created) { |
| return 0; /* Tell the caller we do not want to restart */ |
| } |
| |
| /* This shutdown is only marginally graceful. We will give the |
| * child a bit of time to exit gracefully. If the time expires, |
| * the child will be wacked. |
| */ |
| if (!strcasecmp(signal_arg, "runservice")) { |
| mpm_service_stopping(); |
| } |
| /* Signal the child processes to exit */ |
| if (SetEvent(child_exit_event) == 0) { |
| ap_log_error(APLOG_MARK,APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00429) |
| "Parent: SetEvent for child process event %pp failed", |
| event_handles[CHILD_HANDLE]); |
| } |
| if (event_handles[CHILD_HANDLE]) { |
| rv = WaitForSingleObject(event_handles[CHILD_HANDLE], timeout); |
| if (rv == WAIT_OBJECT_0) { |
| ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00430) |
| "Parent: Child process %lu exited successfully.", child_pid); |
| CloseHandle(event_handles[CHILD_HANDLE]); |
| event_handles[CHILD_HANDLE] = NULL; |
| } |
| else { |
| ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00431) |
| "Parent: Forcing termination of child process %lu", |
| child_pid); |
| TerminateProcess(event_handles[CHILD_HANDLE], 1); |
| CloseHandle(event_handles[CHILD_HANDLE]); |
| event_handles[CHILD_HANDLE] = NULL; |
| } |
| } |
| CloseHandle(child_exit_event); |
| return 0; /* Tell the caller we do not want to restart */ |
| } |
| winnt_mpm_state = AP_MPMQ_STARTING; |
| CloseHandle(child_exit_event); |
| return 1; /* Tell the caller we want a restart */ |
| } |
| |
| /* service_nt_main_fn needs to append the StartService() args |
| * outside of our call stack and thread as the service starts... |
| */ |
| apr_array_header_t *mpm_new_argv; |
| |
| /* Remember service_to_start failures to log and fail in pre_config. |
| * Remember inst_argc and inst_argv for installing or starting the |
| * service after we preflight the config. |
| */ |
| |
| static int winnt_query(int query_code, int *result, apr_status_t *rv) |
| { |
| *rv = APR_SUCCESS; |
| switch (query_code) { |
| case AP_MPMQ_MAX_DAEMON_USED: |
| *result = MAXIMUM_WAIT_OBJECTS; |
| break; |
| case AP_MPMQ_IS_THREADED: |
| *result = AP_MPMQ_STATIC; |
| break; |
| case AP_MPMQ_IS_FORKED: |
| *result = AP_MPMQ_NOT_SUPPORTED; |
| break; |
| case AP_MPMQ_HARD_LIMIT_DAEMONS: |
| *result = HARD_SERVER_LIMIT; |
| break; |
| case AP_MPMQ_HARD_LIMIT_THREADS: |
| *result = thread_limit; |
| break; |
| case AP_MPMQ_MAX_THREADS: |
| *result = ap_threads_per_child; |
| break; |
| case AP_MPMQ_MIN_SPARE_DAEMONS: |
| *result = 0; |
| break; |
| case AP_MPMQ_MIN_SPARE_THREADS: |
| *result = 0; |
| break; |
| case AP_MPMQ_MAX_SPARE_DAEMONS: |
| *result = 0; |
| break; |
| case AP_MPMQ_MAX_SPARE_THREADS: |
| *result = 0; |
| break; |
| case AP_MPMQ_MAX_REQUESTS_DAEMON: |
| *result = ap_max_requests_per_child; |
| break; |
| case AP_MPMQ_MAX_DAEMONS: |
| *result = 1; |
| break; |
| case AP_MPMQ_MPM_STATE: |
| *result = winnt_mpm_state; |
| break; |
| case AP_MPMQ_GENERATION: |
| *result = my_generation; |
| break; |
| default: |
| *rv = APR_ENOTIMPL; |
| break; |
| } |
| return OK; |
| } |
| |
| static const char *winnt_get_name(void) |
| { |
| return "WinNT"; |
| } |
| |
| #define SERVICE_UNSET (-1) |
| static apr_status_t service_set = SERVICE_UNSET; |
| static apr_status_t service_to_start_success; |
| static int inst_argc; |
| static const char * const *inst_argv; |
| static const char *service_name = NULL; |
| |
| static void winnt_rewrite_args(process_rec *process) |
| { |
| /* Handle the following SCM aspects in this phase: |
| * |
| * -k runservice [transition in service context only] |
| * -k install |
| * -k config |
| * -k uninstall |
| * -k stop |
| * -k shutdown (same as -k stop). Maintained for backward compatibility. |
| * |
| * We can't leave this phase until we know our identity |
| * and modify the command arguments appropriately. |
| * |
| * We do not care if the .conf file exists or is parsable when |
| * attempting to stop or uninstall a service. |
| */ |
| apr_status_t rv; |
| char *def_server_root; |
| char *binpath; |
| char optbuf[3]; |
| const char *opt_arg; |
| int fixed_args; |
| char *pid; |
| apr_getopt_t *opt; |
| int running_as_service = 1; |
| int errout = 0; |
| apr_file_t *nullfile; |
| |
| pconf = process->pconf; |
| |
| osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
| GetVersionEx(&osver); |
| |
| /* We wish this was *always* a reservation, but sadly it wasn't so and |
| * we couldn't break a hard limit prior to NT Kernel 5.1 |
| */ |
| if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT |
| && ((osver.dwMajorVersion > 5) |
| || ((osver.dwMajorVersion == 5) && (osver.dwMinorVersion > 0)))) { |
| stack_res_flag = STACK_SIZE_PARAM_IS_A_RESERVATION; |
| } |
| |
| /* AP_PARENT_PID is only valid in the child */ |
| pid = getenv("AP_PARENT_PID"); |
| if (pid) |
| { |
| HANDLE filehand; |
| HANDLE hproc = GetCurrentProcess(); |
| DWORD BytesRead; |
| |
| /* This is the child */ |
| my_pid = GetCurrentProcessId(); |
| parent_pid = (DWORD) atol(pid); |
| |
| /* Prevent holding open the (nonexistent) console */ |
| ap_real_exit_code = 0; |
| |
| /* The parent gave us stdin, we need to remember this |
| * handle, and no longer inherit it at our children |
| * (we can't slurp it up now, we just aren't ready yet). |
| * The original handle is closed below, at apr_file_dup2() |
| */ |
| pipe = GetStdHandle(STD_INPUT_HANDLE); |
| if (DuplicateHandle(hproc, pipe, |
| hproc, &filehand, 0, FALSE, |
| DUPLICATE_SAME_ACCESS)) { |
| pipe = filehand; |
| } |
| |
| /* The parent gave us stdout of the NUL device, |
| * and expects us to suck up stdin of all of our |
| * shared handles and data from the parent. |
| * Don't infect child processes with our stdin |
| * handle, use another handle to NUL! |
| */ |
| { |
| apr_file_t *infile, *outfile; |
| if ((apr_file_open_stdout(&outfile, process->pool) == APR_SUCCESS) |
| && (apr_file_open_stdin(&infile, process->pool) == APR_SUCCESS)) |
| apr_file_dup2(infile, outfile, process->pool); |
| } |
| |
| /* This child needs the existing stderr opened for logging, |
| * already |
| */ |
| |
| /* Read this child's generation number as soon as now, |
| * so that further hooks can query it. |
| */ |
| if (!ReadFile(pipe, &my_generation, sizeof(my_generation), |
| &BytesRead, (LPOVERLAPPED) NULL) |
| || (BytesRead != sizeof(my_generation))) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), NULL, APLOGNO(02965) |
| "Child: Unable to retrieve my generation from the parent"); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| /* The parent is responsible for providing the |
| * COMPLETE ARGUMENTS REQUIRED to the child. |
| * |
| * No further argument parsing is needed, but |
| * for good measure we will provide a simple |
| * signal string for later testing. |
| */ |
| signal_arg = "runchild"; |
| return; |
| } |
| |
| /* This is the parent, we have a long way to go :-) */ |
| parent_pid = my_pid = GetCurrentProcessId(); |
| |
| /* This behavior is voided by setting real_exit_code to 0 */ |
| atexit(hold_console_open_on_error); |
| |
| /* Rewrite process->argv[]; |
| * |
| * strip out -k signal into signal_arg |
| * strip out -n servicename and set the names |
| * add default -d serverroot from the path of this executable |
| * |
| * The end result will look like: |
| * |
| * The invocation command (%0) |
| * The -d serverroot default from the running executable |
| * The requested service's (-n) registry ConfigArgs |
| * The WinNT SCM's StartService() args |
| */ |
| if ((rv = ap_os_proc_filepath(&binpath, process->pconf)) |
| != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK,APLOG_CRIT, rv, NULL, APLOGNO(00432) |
| "Failed to get the full path of %s", process->argv[0]); |
| exit(APEXIT_INIT); |
| } |
| /* WARNING: There is an implicit assumption here that the |
| * executable resides in ServerRoot or ServerRoot\bin |
| */ |
| def_server_root = (char *) apr_filepath_name_get(binpath); |
| if (def_server_root > binpath) { |
| *(def_server_root - 1) = '\0'; |
| def_server_root = (char *) apr_filepath_name_get(binpath); |
| if (!strcasecmp(def_server_root, "bin")) |
| *(def_server_root - 1) = '\0'; |
| } |
| apr_filepath_merge(&def_server_root, NULL, binpath, |
| APR_FILEPATH_TRUENAME, process->pool); |
| |
| /* Use process->pool so that the rewritten argv |
| * lasts for the lifetime of the server process, |
| * because pconf will be destroyed after the |
| * initial pre-flight of the config parser. |
| */ |
| mpm_new_argv = apr_array_make(process->pool, process->argc + 2, |
| sizeof(const char *)); |
| *(const char **)apr_array_push(mpm_new_argv) = process->argv[0]; |
| *(const char **)apr_array_push(mpm_new_argv) = "-d"; |
| *(const char **)apr_array_push(mpm_new_argv) = def_server_root; |
| |
| fixed_args = mpm_new_argv->nelts; |
| |
| optbuf[0] = '-'; |
| optbuf[2] = '\0'; |
| apr_getopt_init(&opt, process->pool, process->argc, process->argv); |
| opt->errfn = NULL; |
| while ((rv = apr_getopt(opt, "wn:k:" AP_SERVER_BASEARGS, |
| optbuf + 1, &opt_arg)) == APR_SUCCESS) { |
| switch (optbuf[1]) { |
| |
| /* Shortcuts; include the -w option to hold the window open on error. |
| * This must not be toggled once we reset ap_real_exit_code to 0! |
| */ |
| case 'w': |
| if (ap_real_exit_code) |
| ap_real_exit_code = 2; |
| break; |
| |
| case 'n': |
| service_set = mpm_service_set_name(process->pool, &service_name, |
| opt_arg); |
| break; |
| |
| case 'k': |
| signal_arg = opt_arg; |
| break; |
| |
| case 'E': |
| errout = 1; |
| /* Fall through so the Apache main() handles the 'E' arg */ |
| default: |
| *(const char **)apr_array_push(mpm_new_argv) = |
| apr_pstrdup(process->pool, optbuf); |
| |
| if (opt_arg) { |
| *(const char **)apr_array_push(mpm_new_argv) = opt_arg; |
| } |
| break; |
| } |
| } |
| |
| /* back up to capture the bad argument */ |
| if (rv == APR_BADCH || rv == APR_BADARG) { |
| opt->ind--; |
| } |
| |
| while (opt->ind < opt->argc) { |
| *(const char **)apr_array_push(mpm_new_argv) = |
| apr_pstrdup(process->pool, opt->argv[opt->ind++]); |
| } |
| |
| /* Track the number of args actually entered by the user */ |
| inst_argc = mpm_new_argv->nelts - fixed_args; |
| |
| /* Provide a default 'run' -k arg to simplify signal_arg tests */ |
| if (!signal_arg) |
| { |
| signal_arg = "run"; |
| running_as_service = 0; |
| } |
| |
| if (!strcasecmp(signal_arg, "runservice")) |
| { |
| /* Start the NT Service _NOW_ because the WinNT SCM is |
| * expecting us to rapidly assume control of our own |
| * process, the SCM will tell us our service name, and |
| * may have extra StartService() command arguments to |
| * add for us. |
| * |
| * The SCM will generally invoke the executable with |
| * the c:\win\system32 default directory. This is very |
| * lethal if folks use ServerRoot /foopath on windows |
| * without a drive letter. Change to the default root |
| * (path to apache root, above /bin) for safety. |
| */ |
| apr_filepath_set(def_server_root, process->pool); |
| |
| /* Any other process has a console, so we don't to begin |
| * a Win9x service until the configuration is parsed and |
| * any command line errors are reported. |
| * |
| * We hold the return value so that we can die in pre_config |
| * after logging begins, and the failure can land in the log. |
| */ |
| if (!errout) { |
| mpm_nt_eventlog_stderr_open(service_name, process->pool); |
| } |
| service_to_start_success = mpm_service_to_start(&service_name, |
| process->pool); |
| if (service_to_start_success == APR_SUCCESS) { |
| service_set = APR_SUCCESS; |
| } |
| |
| /* Open a null handle to soak stdout in this process. |
| * Windows service processes are missing any file handle |
| * usable for stdin/out/err. This was the cause of later |
| * trouble with invocations of apr_file_open_stdout() |
| */ |
| if ((rv = apr_file_open(&nullfile, "NUL", |
| APR_READ | APR_WRITE, APR_OS_DEFAULT, |
| process->pool)) == APR_SUCCESS) { |
| apr_file_t *nullstdout; |
| if (apr_file_open_stdout(&nullstdout, process->pool) |
| == APR_SUCCESS) |
| apr_file_dup2(nullstdout, nullfile, process->pool); |
| apr_file_close(nullfile); |
| } |
| } |
| |
| /* Get the default for any -k option, except run */ |
| if (service_set == SERVICE_UNSET && strcasecmp(signal_arg, "run")) { |
| service_set = mpm_service_set_name(process->pool, &service_name, |
| AP_DEFAULT_SERVICE_NAME); |
| } |
| |
| if (!strcasecmp(signal_arg, "install")) /* -k install */ |
| { |
| if (service_set == APR_SUCCESS) |
| { |
| ap_log_error(APLOG_MARK,APLOG_ERR, 0, NULL, APLOGNO(00433) |
| "%s: Service is already installed.", service_name); |
| exit(APEXIT_INIT); |
| } |
| } |
| else if (running_as_service) |
| { |
| if (service_set == APR_SUCCESS) |
| { |
| /* Attempt to Uninstall, or stop, before |
| * we can read the arguments or .conf files |
| */ |
| if (!strcasecmp(signal_arg, "uninstall")) { |
| rv = mpm_service_uninstall(); |
| exit(rv); |
| } |
| |
| if ((!strcasecmp(signal_arg, "stop")) || |
| (!strcasecmp(signal_arg, "shutdown"))) { |
| mpm_signal_service(process->pool, 0); |
| exit(0); |
| } |
| |
| rv = mpm_merge_service_args(process->pool, mpm_new_argv, |
| fixed_args); |
| if (rv == APR_SUCCESS) { |
| ap_log_error(APLOG_MARK,APLOG_INFO, 0, NULL, APLOGNO(00434) |
| "Using ConfigArgs of the installed service " |
| "\"%s\".", service_name); |
| } |
| else { |
| ap_log_error(APLOG_MARK,APLOG_WARNING, rv, NULL, APLOGNO(00435) |
| "No installed ConfigArgs for the service " |
| "\"%s\", using Apache defaults.", service_name); |
| } |
| } |
| else |
| { |
| ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00436) |
| "No installed service named \"%s\".", service_name); |
| exit(APEXIT_INIT); |
| } |
| } |
| if (strcasecmp(signal_arg, "install") && service_set && service_set != SERVICE_UNSET) |
| { |
| ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00437) |
| "No installed service named \"%s\".", service_name); |
| exit(APEXIT_INIT); |
| } |
| |
| /* Track the args actually entered by the user. |
| * These will be used for the -k install parameters, as well as |
| * for the -k start service override arguments. |
| */ |
| inst_argv = (const char * const *)mpm_new_argv->elts |
| + mpm_new_argv->nelts - inst_argc; |
| |
| /* Now, do service install or reconfigure then proceed to |
| * post_config to test the installed configuration. |
| */ |
| if (!strcasecmp(signal_arg, "config")) { /* -k config */ |
| /* Reconfigure the service */ |
| rv = mpm_service_install(process->pool, inst_argc, inst_argv, 1); |
| if (rv != APR_SUCCESS) { |
| exit(rv); |
| } |
| |
| fprintf(stderr,"Testing httpd.conf....\n"); |
| fprintf(stderr,"Errors reported here must be corrected before the " |
| "service can be started.\n"); |
| } |
| else if (!strcasecmp(signal_arg, "install")) { /* -k install */ |
| /* Install the service */ |
| rv = mpm_service_install(process->pool, inst_argc, inst_argv, 0); |
| if (rv != APR_SUCCESS) { |
| exit(rv); |
| } |
| |
| fprintf(stderr,"Testing httpd.conf....\n"); |
| fprintf(stderr,"Errors reported here must be corrected before the " |
| "service can be started.\n"); |
| } |
| |
| process->argc = mpm_new_argv->nelts; |
| process->argv = (const char * const *) mpm_new_argv->elts; |
| } |
| |
| |
| static int winnt_pre_config(apr_pool_t *pconf_, apr_pool_t *plog, apr_pool_t *ptemp) |
| { |
| /* Handle the following SCM aspects in this phase: |
| * |
| * -k runservice [WinNT errors logged from rewrite_args] |
| */ |
| |
| /* Initialize shared static objects. |
| * TODO: Put config related statics into an sconf structure. |
| */ |
| pconf = pconf_; |
| |
| if (ap_exists_config_define("ONE_PROCESS") || |
| ap_exists_config_define("DEBUG")) |
| one_process = -1; |
| |
| /* XXX: presume proper privileges; one nice thing would be |
| * a loud emit if running as "LocalSystem"/"SYSTEM" to indicate |
| * they should change to a user with write access to logs/ alone. |
| */ |
| ap_sys_privileges_handlers(1); |
| |
| if (!strcasecmp(signal_arg, "runservice") |
| && (service_to_start_success != APR_SUCCESS)) { |
| ap_log_error(APLOG_MARK,APLOG_CRIT, service_to_start_success, NULL, APLOGNO(00438) |
| "%s: Unable to start the service manager.", |
| service_name); |
| exit(APEXIT_INIT); |
| } |
| else if (ap_state_query(AP_SQ_RUN_MODE) == AP_SQ_RM_NORMAL |
| && !one_process && !my_generation) { |
| /* Open a null handle to soak stdout in this process. |
| * We need to emulate apr_proc_detach, unix performs this |
| * same check in the pre_config hook (although it is |
| * arguably premature). Services already fixed this. |
| */ |
| apr_file_t *nullfile; |
| apr_status_t rv; |
| apr_pool_t *pproc = apr_pool_parent_get(pconf); |
| |
| if ((rv = apr_file_open(&nullfile, "NUL", |
| APR_READ | APR_WRITE, APR_OS_DEFAULT, |
| pproc)) == APR_SUCCESS) { |
| apr_file_t *nullstdout; |
| if (apr_file_open_stdout(&nullstdout, pproc) |
| == APR_SUCCESS) |
| apr_file_dup2(nullstdout, nullfile, pproc); |
| apr_file_close(nullfile); |
| } |
| } |
| |
| ap_listen_pre_config(); |
| thread_limit = DEFAULT_THREAD_LIMIT; |
| ap_threads_per_child = DEFAULT_THREADS_PER_CHILD; |
| |
| return OK; |
| } |
| |
| static int winnt_check_config(apr_pool_t *pconf, apr_pool_t *plog, |
| apr_pool_t *ptemp, server_rec* s) |
| { |
| int is_parent; |
| int startup = 0; |
| |
| /* We want this only in the parent and only the first time around */ |
| is_parent = (parent_pid == my_pid); |
| if (is_parent && |
| ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG) { |
| startup = 1; |
| } |
| |
| if (thread_limit > MAX_THREAD_LIMIT) { |
| if (startup) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00439) |
| "WARNING: ThreadLimit of %d exceeds compile-time " |
| "limit of %d threads, decreasing to %d.", |
| thread_limit, MAX_THREAD_LIMIT, MAX_THREAD_LIMIT); |
| } else if (is_parent) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00440) |
| "ThreadLimit of %d exceeds compile-time limit " |
| "of %d, decreasing to match", |
| thread_limit, MAX_THREAD_LIMIT); |
| } |
| thread_limit = MAX_THREAD_LIMIT; |
| } |
| else if (thread_limit < 1) { |
| if (startup) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00441) |
| "WARNING: ThreadLimit of %d not allowed, " |
| "increasing to 1.", thread_limit); |
| } else if (is_parent) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00442) |
| "ThreadLimit of %d not allowed, increasing to 1", |
| thread_limit); |
| } |
| thread_limit = 1; |
| } |
| |
| /* You cannot change ThreadLimit across a restart; ignore |
| * any such attempts. |
| */ |
| if (!first_thread_limit) { |
| first_thread_limit = thread_limit; |
| } |
| else if (thread_limit != first_thread_limit) { |
| /* Don't need a startup console version here */ |
| if (is_parent) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00443) |
| "changing ThreadLimit to %d from original value " |
| "of %d not allowed during restart", |
| thread_limit, first_thread_limit); |
| } |
| thread_limit = first_thread_limit; |
| } |
| |
| if (ap_threads_per_child > thread_limit) { |
| if (startup) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00444) |
| "WARNING: ThreadsPerChild of %d exceeds ThreadLimit " |
| "of %d threads, decreasing to %d. To increase, please " |
| "see the ThreadLimit directive.", |
| ap_threads_per_child, thread_limit, thread_limit); |
| } else if (is_parent) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00445) |
| "ThreadsPerChild of %d exceeds ThreadLimit " |
| "of %d, decreasing to match", |
| ap_threads_per_child, thread_limit); |
| } |
| ap_threads_per_child = thread_limit; |
| } |
| else if (ap_threads_per_child < 1) { |
| if (startup) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00446) |
| "WARNING: ThreadsPerChild of %d not allowed, " |
| "increasing to 1.", ap_threads_per_child); |
| } else if (is_parent) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00447) |
| "ThreadsPerChild of %d not allowed, increasing to 1", |
| ap_threads_per_child); |
| } |
| ap_threads_per_child = 1; |
| } |
| |
| return OK; |
| } |
| |
| static int winnt_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec* s) |
| { |
| apr_status_t rv = 0; |
| |
| /* Handle the following SCM aspects in this phase: |
| * |
| * -k install (catch and exit as install was handled in rewrite_args) |
| * -k config (catch and exit as config was handled in rewrite_args) |
| * -k start |
| * -k restart |
| * -k runservice [Win95, only once - after we parsed the config] |
| * |
| * because all of these signals are useful _only_ if there |
| * is a valid conf\httpd.conf environment to start. |
| * |
| * We reached this phase by avoiding errors that would cause |
| * these options to fail unexpectedly in another process. |
| */ |
| |
| if (!strcasecmp(signal_arg, "install")) { |
| /* Service install happens in the rewrite_args hooks. If we |
| * made it this far, the server configuration is clean and the |
| * service will successfully start. |
| */ |
| apr_pool_destroy(s->process->pool); |
| apr_terminate(); |
| exit(0); |
| } |
| if (!strcasecmp(signal_arg, "config")) { |
| /* Service reconfiguration happens in the rewrite_args hooks. If we |
| * made it this far, the server configuration is clean and the |
| * service will successfully start. |
| */ |
| apr_pool_destroy(s->process->pool); |
| apr_terminate(); |
| exit(0); |
| } |
| |
| if (!strcasecmp(signal_arg, "start")) { |
| ap_listen_rec *lr; |
| |
| /* Close the listening sockets. */ |
| for (lr = ap_listeners; lr; lr = lr->next) { |
| apr_socket_close(lr->sd); |
| lr->active = 0; |
| } |
| rv = mpm_service_start(ptemp, inst_argc, inst_argv); |
| apr_pool_destroy(s->process->pool); |
| apr_terminate(); |
| exit (rv); |
| } |
| |
| if (!strcasecmp(signal_arg, "restart")) { |
| mpm_signal_service(ptemp, 1); |
| apr_pool_destroy(s->process->pool); |
| apr_terminate(); |
| exit (rv); |
| } |
| |
| if (parent_pid == my_pid) |
| { |
| if (ap_state_query(AP_SQ_MAIN_STATE) != AP_SQ_MS_CREATE_PRE_CONFIG |
| && ap_state_query(AP_SQ_CONFIG_GEN) == 1) |
| { |
| /* This code should be run once in the parent and not run |
| * across a restart |
| */ |
| setup_signal_names(apr_psprintf(pconf, "ap%lu", parent_pid)); |
| |
| ap_log_pid(pconf, ap_pid_fname); |
| |
| /* Create shutdown event, apPID_shutdown, where PID is the parent |
| * Apache process ID. Shutdown is signaled by 'apache -k shutdown'. |
| */ |
| shutdown_event = CreateEvent(NULL, FALSE, FALSE, signal_shutdown_name); |
| if (!shutdown_event) { |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00448) |
| "Parent: Cannot create shutdown event %s", signal_shutdown_name); |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| /* Create restart event, apPID_restart, where PID is the parent |
| * Apache process ID. Restart is signaled by 'apache -k restart'. |
| */ |
| restart_event = CreateEvent(NULL, FALSE, FALSE, signal_restart_name); |
| if (!restart_event) { |
| CloseHandle(shutdown_event); |
| ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00449) |
| "Parent: Cannot create restart event %s", signal_restart_name); |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| /* Create the start mutex, as an unnamed object for security. |
| * The start mutex is used during a restart to prevent more than |
| * one child process from entering the accept loop at once. |
| */ |
| rv = apr_proc_mutex_create(&start_mutex, NULL, |
| APR_LOCK_DEFAULT, |
| ap_server_conf->process->pool); |
| if (rv != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00450) |
| "%s: Unable to create the start_mutex.", |
| service_name); |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| } |
| /* Always reset our console handler to be the first, even on a restart |
| * because some modules (e.g. mod_perl) might have set a console |
| * handler to terminate the process. |
| */ |
| if (strcasecmp(signal_arg, "runservice")) |
| mpm_start_console_handler(); |
| } |
| else /* parent_pid != my_pid */ |
| { |
| mpm_start_child_console_handler(); |
| } |
| return OK; |
| } |
| |
| /* This really should be a post_config hook, but the error log is already |
| * redirected by that point, so we need to do this in the open_logs phase. |
| */ |
| static int winnt_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) |
| { |
| /* Initialize shared static objects. |
| */ |
| if (parent_pid != my_pid) { |
| return OK; |
| } |
| |
| /* We cannot initialize our listeners if we are restarting |
| * (the parent process already has glomed on to them) |
| * nor should we do so for service reconfiguration |
| * (since the service may already be running.) |
| */ |
| if (!strcasecmp(signal_arg, "restart") |
| || !strcasecmp(signal_arg, "config")) { |
| return OK; |
| } |
| |
| if (ap_setup_listeners(s) < 1) { |
| ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, |
| NULL, APLOGNO(00451) "no listening sockets available, shutting down"); |
| return !OK; |
| } |
| |
| return OK; |
| } |
| |
| static void winnt_child_init(apr_pool_t *pchild, struct server_rec *s) |
| { |
| apr_status_t rv; |
| |
| setup_signal_names(apr_psprintf(pchild, "ap%lu", parent_pid)); |
| |
| /* This is a child process, not in single process mode */ |
| if (!one_process) { |
| /* Set up events and the scoreboard */ |
| get_handles_from_parent(s, &exit_event, &start_mutex, |
| &ap_scoreboard_shm); |
| |
| /* Set up the listeners */ |
| get_listeners_from_parent(s); |
| |
| /* Done reading from the parent, close that channel */ |
| CloseHandle(pipe); |
| } |
| else { |
| /* Single process mode - this lock doesn't even need to exist */ |
| rv = apr_proc_mutex_create(&start_mutex, signal_name_prefix, |
| APR_LOCK_DEFAULT, s->process->pool); |
| if (rv != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00452) |
| "%s child: Unable to init the start_mutex.", |
| service_name); |
| exit(APEXIT_CHILDINIT); |
| } |
| |
| /* Borrow the shutdown_even as our _child_ loop exit event */ |
| exit_event = shutdown_event; |
| } |
| } |
| |
| |
| static int winnt_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s ) |
| { |
| static int restart = 0; /* Default is "not a restart" */ |
| |
| /* ### If non-graceful restarts are ever introduced - we need to rerun |
| * the pre_mpm hook on subsequent non-graceful restarts. But Win32 |
| * has only graceful style restarts - and we need this hook to act |
| * the same on Win32 as on Unix. |
| */ |
| if (!restart && ((parent_pid == my_pid) || one_process)) { |
| /* Set up the scoreboard. */ |
| if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) { |
| return !OK; |
| } |
| } |
| |
| if ((parent_pid != my_pid) || one_process) |
| { |
| /* The child process or in one_process (debug) mode |
| */ |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00453) |
| "Child process is running"); |
| |
| child_main(pconf, parent_pid); |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00454) |
| "Child process is exiting"); |
| return DONE; |
| } |
| else |
| { |
| /* A real-honest to goodness parent */ |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00455) |
| "%s configured -- resuming normal operations", |
| ap_get_server_description()); |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00456) |
| "Server built: %s", ap_get_server_built()); |
| ap_log_command_line(plog, s); |
| ap_log_mpm_common(s); |
| |
| restart = master_main(ap_server_conf, shutdown_event, restart_event); |
| |
| if (!restart) |
| { |
| /* Shutting down. Clean up... */ |
| ap_remove_pid(pconf, ap_pid_fname); |
| apr_proc_mutex_destroy(start_mutex); |
| |
| CloseHandle(restart_event); |
| CloseHandle(shutdown_event); |
| |
| return DONE; |
| } |
| } |
| |
| return OK; /* Restart */ |
| } |
| |
| static void winnt_hooks(apr_pool_t *p) |
| { |
| /* Our open_logs hook function must run before the core's, or stderr |
| * will be redirected to a file, and the messages won't print to the |
| * console. |
| */ |
| static const char *const aszSucc[] = {"core.c", NULL}; |
| |
| ap_hook_pre_config(winnt_pre_config, NULL, NULL, APR_HOOK_MIDDLE); |
| ap_hook_check_config(winnt_check_config, NULL, NULL, APR_HOOK_MIDDLE); |
| ap_hook_post_config(winnt_post_config, NULL, NULL, 0); |
| ap_hook_child_init(winnt_child_init, NULL, NULL, APR_HOOK_MIDDLE); |
| ap_hook_open_logs(winnt_open_logs, NULL, aszSucc, APR_HOOK_REALLY_FIRST); |
| ap_hook_mpm(winnt_run, NULL, NULL, APR_HOOK_MIDDLE); |
| ap_hook_mpm_query(winnt_query, NULL, NULL, APR_HOOK_MIDDLE); |
| ap_hook_mpm_get_name(winnt_get_name, NULL, NULL, APR_HOOK_MIDDLE); |
| } |
| |
| AP_DECLARE_MODULE(mpm_winnt) = { |
| MPM20_MODULE_STUFF, |
| winnt_rewrite_args, /* hook to run before apache parses args */ |
| NULL, /* create per-directory config structure */ |
| NULL, /* merge per-directory config structures */ |
| NULL, /* create per-server config structure */ |
| NULL, /* merge per-server config structures */ |
| winnt_cmds, /* command apr_table_t */ |
| winnt_hooks /* register_hooks */ |
| }; |
| |
| #endif /* def WIN32 */ |
