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-rw-r--r--modules/arch/win32/mod_win32.c563
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diff --git a/modules/arch/win32/mod_win32.c b/modules/arch/win32/mod_win32.c
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+++ b/modules/arch/win32/mod_win32.c
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+/* 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 "apr_strings.h"
+#include "apr_portable.h"
+#include "apr_buckets.h"
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_protocol.h"
+#include "http_request.h"
+#include "http_log.h"
+#include "util_script.h"
+#include "mod_core.h"
+#include "mod_cgi.h"
+#include "apr_lib.h"
+#include "ap_regkey.h"
+
+/*
+ * CGI Script stuff for Win32...
+ */
+typedef enum { eFileTypeUNKNOWN, eFileTypeBIN, eFileTypeEXE16, eFileTypeEXE32,
+ eFileTypeSCRIPT } file_type_e;
+typedef enum { INTERPRETER_SOURCE_UNSET, INTERPRETER_SOURCE_REGISTRY_STRICT,
+ INTERPRETER_SOURCE_REGISTRY, INTERPRETER_SOURCE_SHEBANG
+ } interpreter_source_e;
+AP_DECLARE(file_type_e) ap_get_win32_interpreter(const request_rec *,
+ char **interpreter,
+ char **arguments);
+
+module AP_MODULE_DECLARE_DATA win32_module;
+
+typedef struct {
+ /* Where to find interpreter to run scripts */
+ interpreter_source_e script_interpreter_source;
+} win32_dir_conf;
+
+static void *create_win32_dir_config(apr_pool_t *p, char *dir)
+{
+ win32_dir_conf *conf;
+ conf = (win32_dir_conf*)apr_palloc(p, sizeof(win32_dir_conf));
+ conf->script_interpreter_source = INTERPRETER_SOURCE_UNSET;
+ return conf;
+}
+
+static void *merge_win32_dir_configs(apr_pool_t *p, void *basev, void *addv)
+{
+ win32_dir_conf *new;
+ win32_dir_conf *base = (win32_dir_conf *) basev;
+ win32_dir_conf *add = (win32_dir_conf *) addv;
+
+ new = (win32_dir_conf *) apr_pcalloc(p, sizeof(win32_dir_conf));
+ new->script_interpreter_source = (add->script_interpreter_source
+ != INTERPRETER_SOURCE_UNSET)
+ ? add->script_interpreter_source
+ : base->script_interpreter_source;
+ return new;
+}
+
+static const char *set_interpreter_source(cmd_parms *cmd, void *dv,
+ char *arg)
+{
+ win32_dir_conf *d = (win32_dir_conf *)dv;
+ if (!strcasecmp(arg, "registry")) {
+ d->script_interpreter_source = INTERPRETER_SOURCE_REGISTRY;
+ }
+ else if (!strcasecmp(arg, "registry-strict")) {
+ d->script_interpreter_source = INTERPRETER_SOURCE_REGISTRY_STRICT;
+ }
+ else if (!strcasecmp(arg, "script")) {
+ d->script_interpreter_source = INTERPRETER_SOURCE_SHEBANG;
+ }
+ else {
+ return apr_pstrcat(cmd->temp_pool, "ScriptInterpreterSource \"", arg,
+ "\" must be \"registry\", \"registry-strict\" or "
+ "\"script\"", NULL);
+ }
+ return NULL;
+}
+
+/* XXX: prep_string should translate the string into unicode,
+ * such that it is compatible with whatever codepage the client
+ * will read characters 80-ff. For the moment, use the unicode
+ * values 0080-00ff. This isn't trivial, since the code page
+ * varies between msdos and Windows applications.
+ * For subsystem 2 [GUI] the default is the system Ansi CP.
+ * For subsystem 3 [CLI] the default is the system OEM CP.
+ */
+static void prep_string(const char ** str, apr_pool_t *p)
+{
+ const char *ch = *str;
+ char *ch2;
+ apr_size_t widen = 0;
+
+ if (!ch) {
+ return;
+ }
+ while (*ch) {
+ if (*(ch++) & 0x80) {
+ ++widen;
+ }
+ }
+ if (!widen) {
+ return;
+ }
+ widen += (ch - *str) + 1;
+ ch = *str;
+ *str = ch2 = apr_palloc(p, widen);
+ while (*ch) {
+ if (*ch & 0x80) {
+ /* sign extension won't hurt us here */
+ *(ch2++) = 0xC0 | ((*ch >> 6) & 0x03);
+ *(ch2++) = 0x80 | (*(ch++) & 0x3f);
+ }
+ else {
+ *(ch2++) = *(ch++);
+ }
+ }
+ *(ch2++) = '\0';
+}
+
+/* Somewhat more exciting ... figure out where the registry has stashed the
+ * ExecCGI or Open command - it may be nested one level deep (or more???)
+ */
+static char* get_interpreter_from_win32_registry(apr_pool_t *p,
+ const char* ext,
+ int strict)
+{
+ apr_status_t rv;
+ ap_regkey_t *name_key = NULL;
+ ap_regkey_t *type_key;
+ ap_regkey_t *key;
+ char execcgi_path[] = "SHELL\\EXECCGI\\COMMAND";
+ char execopen_path[] = "SHELL\\OPEN\\COMMAND";
+ char *type_name;
+ char *buffer;
+
+ if (!ext) {
+ return NULL;
+ }
+ /*
+ * Future optimization:
+ * When the registry is successfully searched, store the strings for
+ * interpreter and arguments in an ext hash to speed up subsequent look-ups
+ */
+
+ /* Open the key associated with the script filetype extension */
+ rv = ap_regkey_open(&type_key, AP_REGKEY_CLASSES_ROOT, ext, APR_READ, p);
+
+ if (rv != APR_SUCCESS) {
+ return NULL;
+ }
+
+ /* Retrieve the name of the script filetype extension */
+ rv = ap_regkey_value_get(&type_name, type_key, "", p);
+
+ if (rv == APR_SUCCESS && type_name[0]) {
+ /* Open the key associated with the script filetype extension */
+ rv = ap_regkey_open(&name_key, AP_REGKEY_CLASSES_ROOT, type_name,
+ APR_READ, p);
+ }
+
+ /* Open the key for the script command path by:
+ *
+ * 1) the 'named' filetype key for ExecCGI/Command
+ * 2) the extension's type key for ExecCGI/Command
+ *
+ * and if the strict arg is false, then continue trying:
+ *
+ * 3) the 'named' filetype key for Open/Command
+ * 4) the extension's type key for Open/Command
+ */
+
+ if (name_key) {
+ if ((rv = ap_regkey_open(&key, name_key, execcgi_path, APR_READ, p))
+ == APR_SUCCESS) {
+ rv = ap_regkey_value_get(&buffer, key, "", p);
+ ap_regkey_close(name_key);
+ }
+ }
+
+ if (!name_key || (rv != APR_SUCCESS)) {
+ if ((rv = ap_regkey_open(&key, type_key, execcgi_path, APR_READ, p))
+ == APR_SUCCESS) {
+ rv = ap_regkey_value_get(&buffer, key, "", p);
+ ap_regkey_close(type_key);
+ }
+ }
+
+ if (!strict && name_key && (rv != APR_SUCCESS)) {
+ if ((rv = ap_regkey_open(&key, name_key, execopen_path, APR_READ, p))
+ == APR_SUCCESS) {
+ rv = ap_regkey_value_get(&buffer, key, "", p);
+ ap_regkey_close(name_key);
+ }
+ }
+
+ if (!strict && (rv != APR_SUCCESS)) {
+ if ((rv = ap_regkey_open(&key, type_key, execopen_path, APR_READ, p))
+ == APR_SUCCESS) {
+ rv = ap_regkey_value_get(&buffer, key, "", p);
+ ap_regkey_close(type_key);
+ }
+ }
+
+ if (name_key) {
+ ap_regkey_close(name_key);
+ }
+
+ ap_regkey_close(type_key);
+
+ if (rv != APR_SUCCESS || !buffer[0]) {
+ return NULL;
+ }
+
+ return buffer;
+}
+
+
+static apr_array_header_t *split_argv(apr_pool_t *p, const char *interp,
+ const char *cgiprg, const char *cgiargs)
+{
+ apr_array_header_t *args = apr_array_make(p, 8, sizeof(char*));
+ char *d = apr_palloc(p, strlen(interp)+1);
+ const char *ch = interp;
+ const char **arg;
+ int prgtaken = 0;
+ int argtaken = 0;
+ int inquo;
+ int sl;
+
+ while (*ch) {
+ /* Skip on through Deep Space */
+ if (apr_isspace(*ch)) {
+ ++ch; continue;
+ }
+ /* One Arg */
+ if (((*ch == '$') || (*ch == '%')) && (*(ch + 1) == '*')) {
+ const char *cgiarg = cgiargs;
+ argtaken = 1;
+ for (;;) {
+ char *w = ap_getword_nulls(p, &cgiarg, '+');
+ if (!*w) {
+ break;
+ }
+ ap_unescape_url(w);
+ prep_string((const char**)&w, p);
+ arg = (const char**)apr_array_push(args);
+ *arg = ap_escape_shell_cmd(p, w);
+ }
+ ch += 2;
+ continue;
+ }
+ if (((*ch == '$') || (*ch == '%')) && (*(ch + 1) == '1')) {
+ /* Todo: Make short name!!! */
+ prgtaken = 1;
+ arg = (const char**)apr_array_push(args);
+ if (*ch == '%') {
+ char *repl = apr_pstrdup(p, cgiprg);
+ *arg = repl;
+ while ((repl = strchr(repl, '/'))) {
+ *repl++ = '\\';
+ }
+ }
+ else {
+ *arg = cgiprg;
+ }
+ ch += 2;
+ continue;
+ }
+ if ((*ch == '\"') && ((*(ch + 1) == '$')
+ || (*(ch + 1) == '%')) && (*(ch + 2) == '1')
+ && (*(ch + 3) == '\"')) {
+ prgtaken = 1;
+ arg = (const char**)apr_array_push(args);
+ if (*(ch + 1) == '%') {
+ char *repl = apr_pstrdup(p, cgiprg);
+ *arg = repl;
+ while ((repl = strchr(repl, '/'))) {
+ *repl++ = '\\';
+ }
+ }
+ else {
+ *arg = cgiprg;
+ }
+ ch += 4;
+ continue;
+ }
+ arg = (const char**)apr_array_push(args);
+ *arg = d;
+ inquo = 0;
+ while (*ch) {
+ if (apr_isspace(*ch) && !inquo) {
+ ++ch; break;
+ }
+ /* Get 'em backslashes */
+ for (sl = 0; *ch == '\\'; ++sl) {
+ *d++ = *ch++;
+ }
+ if (sl & 1) {
+ /* last unmatched '\' + '"' sequence is a '"' */
+ if (*ch == '\"') {
+ *(d - 1) = *ch++;
+ }
+ continue;
+ }
+ if (*ch == '\"') {
+ /* '""' sequence within quotes is a '"' */
+ if (*++ch == '\"' && inquo) {
+ *d++ = *ch++; continue;
+ }
+ /* Flip quote state */
+ inquo = !inquo;
+ if (apr_isspace(*ch) && !inquo) {
+ ++ch; break;
+ }
+ /* All other '"'s are Munched */
+ continue;
+ }
+ /* Anything else is, well, something else */
+ *d++ = *ch++;
+ }
+ /* Term that arg, already pushed on args */
+ *d++ = '\0';
+ }
+
+ if (!prgtaken) {
+ arg = (const char**)apr_array_push(args);
+ *arg = cgiprg;
+ }
+
+ if (!argtaken) {
+ const char *cgiarg = cgiargs;
+ for (;;) {
+ char *w = ap_getword_nulls(p, &cgiarg, '+');
+ if (!*w) {
+ break;
+ }
+ ap_unescape_url(w);
+ prep_string((const char**)&w, p);
+ arg = (const char**)apr_array_push(args);
+ *arg = ap_escape_shell_cmd(p, w);
+ }
+ }
+
+ arg = (const char**)apr_array_push(args);
+ *arg = NULL;
+
+ return args;
+}
+
+
+static apr_status_t ap_cgi_build_command(const char **cmd, const char ***argv,
+ request_rec *r, apr_pool_t *p,
+ cgi_exec_info_t *e_info)
+{
+ const apr_array_header_t *elts_arr = apr_table_elts(r->subprocess_env);
+ const apr_table_entry_t *elts = (apr_table_entry_t *) elts_arr->elts;
+ const char *ext = NULL;
+ const char *interpreter = NULL;
+ win32_dir_conf *d;
+ apr_file_t *fh;
+ const char *args = "";
+ int i;
+
+ d = (win32_dir_conf *)ap_get_module_config(r->per_dir_config,
+ &win32_module);
+
+ if (e_info->cmd_type) {
+ /* We have to consider that the client gets any QUERY_ARGS
+ * without any charset interpretation, use prep_string to
+ * create a string of the literal QUERY_ARGS bytes.
+ */
+ *cmd = r->filename;
+ if (r->args && r->args[0] && !ap_strchr_c(r->args, '=')) {
+ args = r->args;
+ }
+ }
+ /* Handle the complete file name, we DON'T want to follow suexec, since
+ * an unrooted command is as predictable as shooting craps in Win32.
+ * Notice that unlike most mime extension parsing, we have to use the
+ * win32 parsing here, therefore the final extension is the only one
+ * we will consider.
+ */
+ ext = strrchr(apr_filepath_name_get(*cmd), '.');
+
+ /* If the file has an extension and it is not .com and not .exe and
+ * we've been instructed to search the registry, then do so.
+ * Let apr_proc_create do all of the .bat/.cmd dirty work.
+ */
+ if (ext && (!strcasecmp(ext,".exe") || !strcasecmp(ext,".com")
+ || !strcasecmp(ext,".bat") || !strcasecmp(ext,".cmd"))) {
+ interpreter = "";
+ }
+ if (!interpreter && ext
+ && (d->script_interpreter_source
+ == INTERPRETER_SOURCE_REGISTRY
+ || d->script_interpreter_source
+ == INTERPRETER_SOURCE_REGISTRY_STRICT)) {
+ /* Check the registry */
+ int strict = (d->script_interpreter_source
+ == INTERPRETER_SOURCE_REGISTRY_STRICT);
+ interpreter = get_interpreter_from_win32_registry(r->pool, ext,
+ strict);
+ if (interpreter && e_info->cmd_type != APR_SHELLCMD) {
+ e_info->cmd_type = APR_PROGRAM_PATH;
+ }
+ else {
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, r->server,
+ strict ? APLOGNO(03180) "No ExecCGI verb found for files of type '%s'."
+ : APLOGNO(03181) "No ExecCGI or Open verb found for files of type '%s'.",
+ ext);
+ }
+ }
+ if (!interpreter) {
+ apr_status_t rv;
+ char buffer[1024];
+ apr_size_t bytes = sizeof(buffer);
+ apr_size_t i;
+
+ /* Need to peek into the file figure out what it really is...
+ * ### aught to go back and build a cache for this one of these days.
+ */
+ if ((rv = apr_file_open(&fh, *cmd, APR_READ | APR_BUFFERED,
+ APR_OS_DEFAULT, r->pool)) != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(02100)
+ "Failed to open cgi file %s for testing", *cmd);
+ return rv;
+ }
+ if ((rv = apr_file_read(fh, buffer, &bytes)) != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(02101)
+ "Failed to read cgi file %s for testing", *cmd);
+ return rv;
+ }
+ apr_file_close(fh);
+
+ /* Some twisted character [no pun intended] at MS decided that a
+ * zero width joiner as the lead wide character would be ideal for
+ * describing Unicode text files. This was further convoluted to
+ * another MSism that the same character mapped into utf-8, EF BB BF
+ * would signify utf-8 text files.
+ *
+ * Since MS configuration files are all protecting utf-8 encoded
+ * Unicode path, file and resource names, we already have the correct
+ * WinNT encoding. But at least eat the stupid three bytes up front.
+ *
+ * ### A more thorough check would also allow UNICODE text in buf, and
+ * convert it to UTF-8 for invoking unicode scripts. Those are few
+ * and far between, so leave that code an enterprising soul with a need.
+ */
+ if ((bytes >= 3) && memcmp(buffer, "\xEF\xBB\xBF", 3) == 0) {
+ memmove(buffer, buffer + 3, bytes -= 3);
+ }
+
+ /* Script or executable, that is the question...
+ * we check here also for '! so that .vbs scripts can work as CGI.
+ */
+ if ((bytes >= 2) && ((buffer[0] == '#') || (buffer[0] == '\''))
+ && (buffer[1] == '!')) {
+ /* Assuming file is a script since it starts with a shebang */
+ for (i = 2; i < bytes; i++) {
+ if ((buffer[i] == '\r') || (buffer[i] == '\n')) {
+ buffer[i] = '\0';
+ break;
+ }
+ }
+ if (i < bytes) {
+ interpreter = buffer + 2;
+ while (apr_isspace(*interpreter)) {
+ ++interpreter;
+ }
+ if (e_info->cmd_type != APR_SHELLCMD) {
+ e_info->cmd_type = APR_PROGRAM_PATH;
+ }
+ }
+ }
+ else if (bytes >= sizeof(IMAGE_DOS_HEADER)) {
+ /* Not a script, is it an executable? */
+ IMAGE_DOS_HEADER *hdr = (IMAGE_DOS_HEADER*)buffer;
+ if (hdr->e_magic == IMAGE_DOS_SIGNATURE) {
+ if (hdr->e_lfarlc < 0x40) {
+ /* Ought to invoke this 16 bit exe by a stub, (cmd /c?) */
+ interpreter = "";
+ }
+ else {
+ interpreter = "";
+ }
+ }
+ }
+ }
+ if (!interpreter) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02102)
+ "%s is not executable; ensure interpreted scripts have "
+ "\"#!\" or \"'!\" first line", *cmd);
+ return APR_EBADF;
+ }
+
+ *argv = (const char **)(split_argv(p, interpreter, *cmd,
+ args)->elts);
+ *cmd = (*argv)[0];
+
+ e_info->detached = 1;
+
+ /* XXX: Must fix r->subprocess_env to follow utf-8 conventions from
+ * the client's octets so that win32 apr_proc_create is happy.
+ * The -best- way is to determine if the .exe is unicode aware
+ * (using 0x0080-0x00ff) or is linked as a command or windows
+ * application (following the OEM or Ansi code page in effect.)
+ */
+ for (i = 0; i < elts_arr->nelts; ++i) {
+ if (elts[i].key && *elts[i].key && *elts[i].val
+ && !(strncmp(elts[i].key, "REMOTE_", 7) == 0
+ || strcmp(elts[i].key, "GATEWAY_INTERFACE") == 0
+ || strcmp(elts[i].key, "REQUEST_METHOD") == 0
+ || strcmp(elts[i].key, "SERVER_ADDR") == 0
+ || strcmp(elts[i].key, "SERVER_PORT") == 0
+ || strcmp(elts[i].key, "SERVER_PROTOCOL") == 0)) {
+ prep_string((const char**) &elts[i].val, r->pool);
+ }
+ }
+ return APR_SUCCESS;
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+ APR_REGISTER_OPTIONAL_FN(ap_cgi_build_command);
+}
+
+static const command_rec win32_cmds[] = {
+AP_INIT_TAKE1("ScriptInterpreterSource", set_interpreter_source, NULL,
+ OR_FILEINFO,
+ "Where to find interpreter to run Win32 scripts "
+ "(Registry or script shebang line)"),
+{ NULL }
+};
+
+AP_DECLARE_MODULE(win32) = {
+ STANDARD20_MODULE_STUFF,
+ create_win32_dir_config, /* create per-dir config */
+ merge_win32_dir_configs, /* merge per-dir config */
+ NULL, /* server config */
+ NULL, /* merge server config */
+ win32_cmds, /* command apr_table_t */
+ register_hooks /* register hooks */
+};
+
+#endif /* defined WIN32 */