--- /dev/null
+/* 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.
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_thread_proc.h" /* for RLIMIT stuff */
+#include "apr_optional.h"
+#include "apr_buckets.h"
+#include "apr_lib.h"
+#include "apr_poll.h"
+
+#define APR_WANT_STRFUNC
+#define APR_WANT_MEMFUNC
+#include "apr_want.h"
+
+#define CORE_PRIVATE
+
+#include "util_filter.h"
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_request.h"
+#include "http_core.h"
+#include "http_protocol.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "util_script.h"
+#include "ap_mpm.h"
+#include "mod_core.h"
+//#include "mod_hml.h"
+
+module AP_MODULE_DECLARE_DATA hml_module;
+
+//static APR_OPTIONAL_FN_TYPE(ap_register_include_handler) *cgi_pfn_reg_with_ssi;
+//static APR_OPTIONAL_FN_TYPE(ap_ssi_get_tag_and_value) *cgi_pfn_gtv;
+//static APR_OPTIONAL_FN_TYPE(ap_ssi_parse_string) *cgi_pfn_ps;
+//static APR_OPTIONAL_FN_TYPE(ap_hml_build_command) *hml_build_command;
+
+/* Read and discard the data in the brigade produced by a CGI script */
+static void discard_script_output(apr_bucket_brigade *bb);
+
+/* KLUDGE --- for back-combatibility, we don't have to check ExecCGI
+ * in ScriptAliased directories, which means we need to know if this
+ * request came through ScriptAlias or not... so the Alias module
+ * leaves a note for us.
+ */
+
+#if 0
+static int is_scriptaliased(request_rec *r)
+{
+ const char *t = apr_table_get(r->notes, "alias-forced-type");
+ return t && (!strcasecmp(t, "cgi-script"));
+}
+#endif
+
+/* Configuration stuff */
+
+#define HMLREADMAX 2048
+#define DEFAULT_LOGBYTES 10385760
+#define DEFAULT_BUFBYTES 1024
+
+typedef struct {
+ const char *logname;
+ long logbytes;
+ apr_size_t bufbytes;
+} hml_server_conf;
+
+typedef struct hml_dir_conf {
+ char* hmldir;
+ char* hmlsubpath;
+// apr_table_t* env;
+ char* searchpath;
+ char* dataroot;
+} hml_dir_conf;
+
+typedef struct {
+ apr_int32_t in_pipe;
+ apr_int32_t out_pipe;
+ apr_int32_t err_pipe;
+ int process_hml;
+ apr_cmdtype_e cmd_type;
+ apr_int32_t detached;
+// prog_types prog_type;
+ apr_bucket_brigade **bb;
+// include_ctx_t *ctx;
+ ap_filter_t *next;
+ apr_int32_t addrspace;
+ hml_dir_conf* dirconf;
+} hml_exec_info_t;
+
+static void* create_hml_dir_config (apr_pool_t* p, char* dir) {
+ hml_dir_conf* conf = apr_pcalloc (p, sizeof (hml_dir_conf));
+ return conf;
+}
+
+static void* merge_hml_dir_config (apr_pool_t* p, void* base_conf, void* new_conf) {
+ hml_dir_conf* bconf = (hml_dir_conf*)base_conf;
+ hml_dir_conf* nconf = (hml_dir_conf*)new_conf;
+ if (nconf->hmldir == NULL) nconf->hmldir = bconf->hmldir;
+ if (nconf->hmlsubpath == NULL) nconf->hmlsubpath = bconf->hmlsubpath;
+#if 0
+ if (nconf->env == NULL) {
+ nconf->env = bconf->env;
+ } else if (bconf->env) {
+ const apr_array_header_t* arr = apr_table_elts (bconf->env);
+ const apr_table_entry_t* elts;
+ int i;
+
+ if (arr) {
+ elts = (const apr_table_entry_t *)arr->elts;
+ for (i = 0; i < arr->nelts; i ++) {
+ apr_table_setn (nconf->env, elts[i].key, elts[i].val);
+ }
+ }
+
+ }
+#endif
+ if (nconf->searchpath == NULL) nconf->searchpath = bconf->searchpath;
+ if (nconf->dataroot == NULL) nconf->dataroot = bconf->dataroot;
+ return nconf;
+}
+
+static const char* set_subpath (cmd_parms* cmd, void* vconf, const char* value) {
+ hml_dir_conf* conf = (hml_dir_conf*)vconf;
+ const char* p;
+ int c;
+
+ for (p = value; *p; p ++) {
+ c = *p;
+ if (isalnum (c) || c == '-' || c == '_') {
+ } else {
+ return apr_pstrcat (cmd->pool, "Invalid directory path ", value, NULL);
+ }
+ }
+ return NULL;
+}
+
+//static const char* set_searchpath (cmd_parms* cmd, void* vconf, const char* name, const char* value) {
+static const char* set_searchpath (cmd_parms* cmd, void* vconf, const char* value) {
+ hml_dir_conf* conf = (hml_dir_conf*)vconf;
+
+ if (ap_os_is_path_absolute (cmd->pool, value)) {
+ goto err;
+ } else {
+ if (cmd->path) {
+ char* path;
+ char* p;
+ path = ap_make_full_path (cmd->pool, cmd->path, value);
+ for (p = path; *p; p ++) {
+ if ((*p == '/' && p[1] == '/')
+ || (*p == '.' && p[1] == '.')) {
+ goto err;
+ }
+ }
+// if (conf->env == NULL)
+// conf->env = apr_table_make (cmd->pool, 4);
+// apr_table_setn (conf->env, name, path);
+ conf->searchpath = path;
+ }
+ }
+
+ err:
+ return apr_pstrcat (cmd->pool, "Invalid directory path ", value, NULL);
+}
+
+static void *create_hml_config(apr_pool_t *p, server_rec *s)
+{
+ hml_server_conf *c =
+ (hml_server_conf *) apr_pcalloc(p, sizeof(hml_server_conf));
+
+ c->logname = NULL;
+ c->logbytes = DEFAULT_LOGBYTES;
+ c->bufbytes = DEFAULT_BUFBYTES;
+
+ return c;
+}
+
+static void *merge_hml_config(apr_pool_t *p, void *basev, void *overridesv)
+{
+ hml_server_conf *base = (hml_server_conf *) basev,
+ *overrides = (hml_server_conf *) overridesv;
+
+ return overrides->logname ? overrides : base;
+}
+
+static const char *set_scriptlog(cmd_parms *cmd, void *dummy, const char *arg)
+{
+ server_rec *s = cmd->server;
+ hml_server_conf *conf = ap_get_module_config(s->module_config,
+ &hml_module);
+
+ conf->logname = ap_server_root_relative(cmd->pool, arg);
+
+ if (!conf->logname) {
+ return apr_pstrcat(cmd->pool, "Invalid HmlScriptLog path ",
+ arg, NULL);
+ }
+
+ return NULL;
+}
+
+static const char *set_scriptlog_length(cmd_parms *cmd, void *dummy,
+ const char *arg)
+{
+ server_rec *s = cmd->server;
+ hml_server_conf *conf = ap_get_module_config(s->module_config,
+ &hml_module);
+
+ conf->logbytes = atol(arg);
+ return NULL;
+}
+
+static const char *set_scriptlog_buffer(cmd_parms *cmd, void *dummy,
+ const char *arg)
+{
+ server_rec *s = cmd->server;
+ hml_server_conf *conf = ap_get_module_config(s->module_config,
+ &hml_module);
+
+ conf->bufbytes = atoi(arg);
+ return NULL;
+}
+
+static const command_rec hml_cmds[] =
+{
+ AP_INIT_TAKE1 ("HmlDir", ap_set_file_slot, (void*)APR_OFFSETOF (hml_dir_conf, hmldir), RSRC_CONF | ACCESS_CONF, "interpreter command directory"),
+ AP_INIT_TAKE1 ("HmlSubPath", set_subpath, NULL, OR_FILEINFO | ACCESS_CONF, "subdirectory of HmlDir"),
+// AP_INIT_TAKE2 ("HmlSearchPath", set_searchpath, NULL, OR_FILEINFO, "set HMLSEARCHPATH env. variable"),
+ AP_INIT_TAKE1 ("HmlSearchPath", set_searchpath, NULL, OR_FILEINFO, "set HTMLSEARCHPATH env. variable"),
+ AP_INIT_TAKE1 ("HmlDataRoot", ap_set_file_slot, (void*)APR_OFFSETOF (hml_dir_conf, dataroot), RSRC_CONF | ACCESS_CONF, "top directory of data"),
+ AP_INIT_TAKE1("HmlScriptLog", set_scriptlog, NULL, RSRC_CONF, "the name of a log for script debugging info"),
+ AP_INIT_TAKE1("HmlScriptLogLength", set_scriptlog_length, NULL, RSRC_CONF, "the maximum length (in bytes) of the script debug log"),
+ AP_INIT_TAKE1("HmlScriptLogBuffer", set_scriptlog_buffer, NULL, RSRC_CONF, "the maximum size (in bytes) to record of a POST request"),
+ {NULL}
+};
+
+static int log_scripterror(request_rec *r, hml_server_conf * conf, int ret,
+ apr_status_t rv, char *error)
+{
+ apr_file_t *f = NULL;
+ apr_finfo_t finfo;
+ char time_str[APR_CTIME_LEN];
+ int log_flags = rv ? APLOG_ERR : APLOG_ERR;
+
+ ap_log_rerror(APLOG_MARK, log_flags, rv, r,
+ "%s: %s", error, r->filename);
+
+ /* XXX Very expensive mainline case! Open, then getfileinfo! */
+ if (!conf->logname ||
+ ((apr_stat(&finfo, conf->logname,
+ APR_FINFO_SIZE, r->pool) == APR_SUCCESS) &&
+ (finfo.size > conf->logbytes)) ||
+ (apr_file_open(&f, conf->logname,
+ APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT,
+ r->pool) != APR_SUCCESS)) {
+ return ret;
+ }
+
+ /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
+ apr_ctime(time_str, apr_time_now());
+ apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
+ r->args ? "?" : "", r->args ? r->args : "", r->protocol);
+ /* "%% 500 /usr/local/apache/cgi-bin */
+ apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
+
+ apr_file_printf(f, "%%error\n%s\n", error);
+
+ apr_file_close(f);
+ return ret;
+}
+
+/* Soak up stderr from a script and redirect it to the error log.
+ */
+static apr_status_t log_script_err(request_rec *r, apr_file_t *script_err)
+{
+ char argsbuffer[HUGE_STRING_LEN];
+ char *newline;
+ apr_status_t rv;
+
+ while ((rv = apr_file_gets(argsbuffer, HUGE_STRING_LEN,
+ script_err)) == APR_SUCCESS) {
+// newline = strchr(argsbuffer, '\n');
+// if (newline) {
+// *newline = '\0';
+// }
+// ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+// "%s", argsbuffer);
+ if (r->server->error_log) {
+ apr_file_puts (argsbuffer, r->server->error_log);
+ }
+ }
+ if (r->server->error_log) {
+ apr_file_flush (r->server->error_log);
+ }
+
+ return rv;
+}
+
+static int log_script(request_rec *r, hml_server_conf * conf, int ret,
+ char *dbuf, const char *sbuf, apr_bucket_brigade *bb,
+ apr_file_t *script_err)
+{
+ const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
+ const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
+ char argsbuffer[HUGE_STRING_LEN];
+ apr_file_t *f = NULL;
+ apr_bucket *e;
+ const char *buf;
+ apr_size_t len;
+ apr_status_t rv;
+ int first;
+ int i;
+ apr_finfo_t finfo;
+ char time_str[APR_CTIME_LEN];
+
+ /* XXX Very expensive mainline case! Open, then getfileinfo! */
+ if (!conf->logname ||
+ ((apr_stat(&finfo, conf->logname,
+ APR_FINFO_SIZE, r->pool) == APR_SUCCESS) &&
+ (finfo.size > conf->logbytes)) ||
+ (apr_file_open(&f, conf->logname,
+ APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT,
+ r->pool) != APR_SUCCESS)) {
+ /* Soak up script output */
+ discard_script_output(bb);
+ log_script_err(r, script_err);
+ return ret;
+ }
+
+ /* "%% [Wed Jun 19 10:53:21 1996] GET /cgi-bin/printenv HTTP/1.0" */
+ apr_ctime(time_str, apr_time_now());
+ apr_file_printf(f, "%%%% [%s] %s %s%s%s %s\n", time_str, r->method, r->uri,
+ r->args ? "?" : "", r->args ? r->args : "", r->protocol);
+ /* "%% 500 /usr/local/apache/cgi-bin" */
+ apr_file_printf(f, "%%%% %d %s\n", ret, r->filename);
+
+ apr_file_puts("%request\n", f);
+ for (i = 0; i < hdrs_arr->nelts; ++i) {
+ if (!hdrs[i].key)
+ continue;
+ apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
+ }
+ if ((r->method_number == M_POST || r->method_number == M_PUT) &&
+ *dbuf) {
+ apr_file_printf(f, "\n%s\n", dbuf);
+ }
+
+ apr_file_puts("%response\n", f);
+ hdrs_arr = apr_table_elts(r->err_headers_out);
+ hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
+
+ for (i = 0; i < hdrs_arr->nelts; ++i) {
+ if (!hdrs[i].key)
+ continue;
+ apr_file_printf(f, "%s: %s\n", hdrs[i].key, hdrs[i].val);
+ }
+
+ if (sbuf && *sbuf)
+ apr_file_printf(f, "%s\n", sbuf);
+
+ first = 1;
+ for (e = APR_BRIGADE_FIRST(bb);
+ e != APR_BRIGADE_SENTINEL(bb);
+ e = APR_BUCKET_NEXT(e))
+ {
+ if (APR_BUCKET_IS_EOS(e)) {
+ break;
+ }
+ rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
+ if (rv != APR_SUCCESS || (len == 0)) {
+ break;
+ }
+ if (first) {
+ apr_file_puts("%stdout\n", f);
+ first = 0;
+ }
+ apr_file_write(f, buf, &len);
+ apr_file_puts("\n", f);
+ }
+
+ if (apr_file_gets(argsbuffer, HUGE_STRING_LEN, script_err) == APR_SUCCESS) {
+ apr_file_puts("%stderr\n", f);
+ apr_file_puts(argsbuffer, f);
+ while (apr_file_gets(argsbuffer, HUGE_STRING_LEN,
+ script_err) == APR_SUCCESS) {
+ apr_file_puts(argsbuffer, f);
+ }
+ apr_file_puts("\n", f);
+ }
+
+ apr_brigade_destroy(bb);
+ apr_file_close(script_err);
+
+ apr_file_close(f);
+ return ret;
+}
+
+
+#if 0
+/* This is the special environment used for running the "exec cmd="
+ * variety of SSI directives.
+ */
+static void add_ssi_vars(request_rec *r)
+{
+ apr_table_t *e = r->subprocess_env;
+
+ if (r->path_info && r->path_info[0] != '\0') {
+ request_rec *pa_req;
+
+ apr_table_setn(e, "PATH_INFO", ap_escape_shell_cmd(r->pool,
+ r->path_info));
+
+ pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info),
+ r, NULL);
+ if (pa_req->filename) {
+ apr_table_setn(e, "PATH_TRANSLATED",
+ apr_pstrcat(r->pool, pa_req->filename,
+ pa_req->path_info, NULL));
+ }
+ ap_destroy_sub_req(pa_req);
+ }
+
+ if (r->args) {
+ char *arg_copy = apr_pstrdup(r->pool, r->args);
+
+ apr_table_setn(e, "QUERY_STRING", r->args);
+ ap_unescape_url(arg_copy);
+ apr_table_setn(e, "QUERY_STRING_UNESCAPED",
+ ap_escape_shell_cmd(r->pool, arg_copy));
+ }
+}
+#endif
+
+static void hml_child_errfn(apr_pool_t *pool, apr_status_t err,
+ const char *description)
+{
+ apr_file_t *stderr_log;
+ char errbuf[200];
+
+ apr_file_open_stderr(&stderr_log, pool);
+ /* Escape the logged string because it may be something that
+ * came in over the network.
+ */
+ apr_file_printf(stderr_log,
+ "(%d)%s: %s\n",
+ err,
+ apr_strerror(err, errbuf, sizeof(errbuf)),
+#ifndef AP_UNSAFE_ERROR_LOG_UNESCAPED
+ ap_escape_logitem(pool,
+#endif
+ description
+#ifndef AP_UNSAFE_ERROR_LOG_UNESCAPED
+ )
+#endif
+ );
+}
+
+static apr_status_t run_hml_child(apr_file_t **script_out,
+ apr_file_t **script_in,
+ apr_file_t **script_err,
+ const char *command,
+ const char * const argv[],
+ request_rec *r,
+ apr_pool_t *p,
+ hml_exec_info_t *e_info)
+{
+ const char * const *env;
+ apr_procattr_t *procattr;
+ apr_proc_t *procnew;
+ apr_status_t rc = APR_SUCCESS;
+
+#if defined(RLIMIT_CPU) || defined(RLIMIT_NPROC) || \
+ defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined (RLIMIT_AS)
+
+ core_dir_config *conf = ap_get_module_config(r->per_dir_config,
+ &core_module);
+#endif
+
+#ifdef DEBUG_CGI
+#ifdef OS2
+ /* Under OS/2 need to use device con. */
+ FILE *dbg = fopen("con", "w");
+#else
+ FILE *dbg = fopen("/dev/tty", "w");
+#endif
+ int i;
+#endif
+
+ RAISE_SIGSTOP(CGI_CHILD);
+#ifdef DEBUG_CGI
+ fprintf(dbg, "Attempting to exec %s as CGI child (argv0 = %s)\n",
+ r->filename, argv[0]);
+#endif
+
+ env = (const char * const *)ap_create_environment(p, r->subprocess_env);
+
+#ifdef DEBUG_CGI
+ fprintf(dbg, "Environment: \n");
+ for (i = 0; env[i]; ++i)
+ fprintf(dbg, "'%s'\n", env[i]);
+#endif
+
+ /* Transmute ourselves into the script.
+ * NB only ISINDEX scripts get decoded arguments.
+ */
+ if (((rc = apr_procattr_create(&procattr, p)) != APR_SUCCESS) ||
+ ((rc = apr_procattr_io_set(procattr,
+ e_info->in_pipe,
+ e_info->out_pipe,
+ e_info->err_pipe)) != APR_SUCCESS) ||
+ ((rc = apr_procattr_dir_set(procattr,
+ ap_make_dirstr_parent(r->pool,
+ r->filename))) != APR_SUCCESS) ||
+#ifdef RLIMIT_CPU
+ ((rc = apr_procattr_limit_set(procattr, APR_LIMIT_CPU,
+ conf->limit_cpu)) != APR_SUCCESS) ||
+#endif
+#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
+ ((rc = apr_procattr_limit_set(procattr, APR_LIMIT_MEM,
+ conf->limit_mem)) != APR_SUCCESS) ||
+#endif
+#ifdef RLIMIT_NPROC
+ ((rc = apr_procattr_limit_set(procattr, APR_LIMIT_NPROC,
+ conf->limit_nproc)) != APR_SUCCESS) ||
+#endif
+ ((rc = apr_procattr_cmdtype_set(procattr,
+ e_info->cmd_type)) != APR_SUCCESS) ||
+
+ ((rc = apr_procattr_detach_set(procattr,
+ e_info->detached)) != APR_SUCCESS) ||
+ ((rc = apr_procattr_addrspace_set(procattr,
+ e_info->addrspace)) != APR_SUCCESS) ||
+ ((rc = apr_procattr_child_errfn_set(procattr, hml_child_errfn)) != APR_SUCCESS)) {
+ /* Something bad happened, tell the world. */
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rc, r,
+ "couldn't set child process attributes: %s", r->filename);
+ }
+ else {
+ procnew = apr_pcalloc(p, sizeof(*procnew));
+ rc = ap_os_create_privileged_process(r, procnew, command, argv, env,
+ procattr, p);
+
+ if (rc != APR_SUCCESS) {
+ /* Bad things happened. Everyone should have cleaned up. */
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_TOCLIENT, rc, r,
+ "couldn't create child process: %d: %s", rc,
+ apr_filepath_name_get(r->filename));
+ }
+ else {
+ apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
+
+ *script_in = procnew->out;
+ if (!*script_in)
+ return APR_EBADF;
+ apr_file_pipe_timeout_set(*script_in, r->server->timeout);
+
+// if (e_info->prog_type == RUN_AS_CGI) {
+ {
+ *script_out = procnew->in;
+ if (!*script_out)
+ return APR_EBADF;
+ apr_file_pipe_timeout_set(*script_out, r->server->timeout);
+
+ *script_err = procnew->err;
+ if (!*script_err)
+ return APR_EBADF;
+ apr_file_pipe_timeout_set(*script_err, r->server->timeout);
+ }
+ }
+ }
+#ifdef DEBUG_CGI
+ fclose(dbg);
+#endif
+ return (rc);
+}
+
+
+static apr_status_t hml_build_command(const char **cmd, const char ***argv,
+ request_rec *r, apr_pool_t *p,
+ hml_exec_info_t *e_info)
+{
+ apr_status_t rc;
+ apr_file_t* f = NULL;
+ apr_finfo_t finfo;
+ apr_size_t size;
+ char* b;
+ int i, n, start;
+ int st;
+ int c;
+ const char* argv0;
+ const char* a;
+
+ if ((rc = apr_file_open (&f, r->filename, APR_READ, APR_OS_DEFAULT, p)) != APR_SUCCESS) {
+ ap_log_rerror (APLOG_MARK, APLOG_ERR, rc, r, "file not found or unable to read");
+ return rc;
+ }
+ apr_file_info_get (&finfo, 0, f);
+ if (finfo.size > HMLREADMAX - 1) {
+ size = HMLREADMAX - 1;
+ } else {
+ size = finfo.size;
+ }
+ b = apr_palloc (p, size + 1);
+ if (size > 0) {
+ rc = apr_file_read (f, b, &size);
+ b[size] = 0;
+ } else {
+ goto Err1;
+ }
+ apr_file_close (f);
+
+ start = 0;
+ if (size >= 3 && memcmp (b, "\xef\xbb\xbf", 3) == 0)
+ start = 3;
+ n = 0;
+ st = 0;
+ for (i = start; i < size; i ++) {
+ c = b[i];
+ switch (st) {
+ case 0: /* init, space */
+ if (apr_isspace (c)) {
+// st = 0;
+ } else if (' ' < c && c < 0x7f) {
+ st = 2;
+ n ++;
+ } else {
+ b[i] = 0;
+ i = size;
+ }
+ break;
+ case 2: /* ascii */
+ if (apr_isspace (c)) {
+ st = 0;
+ if (n == APACHE_ARG_MAX - 1) {
+ b[i] = 0;
+ i = size;
+ }
+ } else if (' ' < c && c < 0x7f) {
+// st = 2;
+ } else {
+ b[i] = 0;
+ i = size;
+ }
+ break;
+ }
+ }
+ *argv = apr_palloc (p, sizeof (char*) * n + 1);
+ n = 0;
+ st = 0;
+ for (i = start; i < size && b[i]; i ++) {
+ c = b[i];
+ switch (st) {
+ case 0: /* init, space */
+ if (apr_isspace (c)) {
+// st = 0;
+ } else if (' ' < c && c < 0x7f) {
+ st = 2;
+ (*argv)[n] = &b[i];
+ n ++;
+ } else {
+ b[i] = 0;
+ i = size;
+ }
+ break;
+ case 2: /* ascii */
+ if (apr_isspace (c)) {
+ st = 0;
+ b[i] = 0;
+ if (n == APACHE_ARG_MAX - 1) {
+ i = size;
+ }
+ } else if (' ' < c && c < 0x7f) {
+// st = 2;
+ } else {
+ b[i] = 0;
+ i = size;
+ }
+ break;
+ }
+ }
+ (*argv)[n] = NULL;
+ if (n == 0) {
+ goto Err1;
+ }
+ argv0 = (*argv)[0];
+ if (argv0 == 0 || argv0[0] == 0 || argv0[0] == '/' || argv0[0] == '.') {
+ goto Err2;
+ }
+ for (a = argv0; *a; a ++) {
+ if ((*a == '.' && *(a + 1) == '.')
+ || (*a == '/' && (*(a + 1) == '/' || *(a + 1) == '.'))) {
+ goto Err2;
+ }
+ }
+ if (e_info->dirconf->hmlsubpath) {
+ *cmd = apr_pstrcat (p, e_info->dirconf->hmldir, "/", e_info->dirconf->hmlsubpath, "/", argv0, NULL);
+ } else {
+ *cmd = apr_pstrcat (p, e_info->dirconf->hmldir, "/", argv0, NULL);
+ }
+
+#if 0 /*DEBUG*/
+ for (i = 0; (*argv)[i]; i ++) {
+ ap_log_rerror (APLOG_MARK, APLOG_ERR, 0, r, "%s", (*argv)[i]);
+ }
+#endif
+
+ return APR_SUCCESS;
+
+ Err1:
+ ap_log_rerror (APLOG_MARK, APLOG_ERR, 0, r, "empty hml file");
+ return APR_EGENERAL;
+ Err2:
+ ap_log_rerror (APLOG_MARK, APLOG_ERR, 0, r, "bad command '%s'", argv0);
+ return APR_EGENERAL;
+
+
+
+#if 0
+ int numwords, x, idx;
+ char *w;
+ const char *args = NULL;
+
+ if (e_info->process_hml) {
+ *cmd = r->filename;
+ /* Do not process r->args if they contain an '=' assignment
+ */
+ if (r->args && r->args[0] && !ap_strchr_c(r->args, '=')) {
+ args = r->args;
+ }
+ }
+
+ if (!args) {
+ numwords = 1;
+ }
+ else {
+ /* count the number of keywords */
+ for (x = 0, numwords = 2; args[x]; x++) {
+ if (args[x] == '+') {
+ ++numwords;
+ }
+ }
+ }
+ /* Everything is - 1 to account for the first parameter
+ * which is the program name.
+ */
+ if (numwords > APACHE_ARG_MAX - 1) {
+ numwords = APACHE_ARG_MAX - 1; /* Truncate args to prevent overrun */
+ }
+ *argv = apr_palloc(p, (numwords + 2) * sizeof(char *));
+ (*argv)[0] = *cmd;
+ for (x = 1, idx = 1; x < numwords; x++) {
+ w = ap_getword_nulls(p, &args, '+');
+ ap_unescape_url(w);
+ (*argv)[idx++] = ap_escape_shell_cmd(p, w);
+ }
+ (*argv)[idx] = NULL;
+
+ return APR_SUCCESS;
+#endif
+}
+
+static void discard_script_output(apr_bucket_brigade *bb)
+{
+ apr_bucket *e;
+ const char *buf;
+ apr_size_t len;
+ apr_status_t rv;
+
+ for (e = APR_BRIGADE_FIRST(bb);
+ e != APR_BRIGADE_SENTINEL(bb);
+ e = APR_BUCKET_NEXT(e))
+ {
+ if (APR_BUCKET_IS_EOS(e)) {
+ break;
+ }
+ rv = apr_bucket_read(e, &buf, &len, APR_BLOCK_READ);
+ if (rv != APR_SUCCESS) {
+ break;
+ }
+ }
+}
+
+#if APR_FILES_AS_SOCKETS
+
+/* A CGI bucket type is needed to catch any output to stderr from the
+ * script; see PR 22030. */
+static const apr_bucket_type_t bucket_type_hml;
+
+struct hml_bucket_data {
+ apr_pollset_t *pollset;
+ request_rec *r;
+};
+
+/* Create a CGI bucket using pipes from script stdout 'out'
+ * and stderr 'err', for request 'r'. */
+static apr_bucket *hml_bucket_create(request_rec *r,
+ apr_file_t *out, apr_file_t *err,
+ apr_bucket_alloc_t *list)
+{
+ apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
+ apr_status_t rv;
+ apr_pollfd_t fd;
+ struct hml_bucket_data *data = apr_palloc(r->pool, sizeof *data);
+
+ APR_BUCKET_INIT(b);
+ b->free = apr_bucket_free;
+ b->list = list;
+ b->type = &bucket_type_hml;
+ b->length = (apr_size_t)(-1);
+ b->start = -1;
+
+ /* Create the pollset */
+ rv = apr_pollset_create(&data->pollset, 2, r->pool, 0);
+ AP_DEBUG_ASSERT(rv == APR_SUCCESS);
+
+ fd.desc_type = APR_POLL_FILE;
+ fd.reqevents = APR_POLLIN;
+ fd.p = r->pool;
+ fd.desc.f = out; /* script's stdout */
+ fd.client_data = (void *)1;
+ rv = apr_pollset_add(data->pollset, &fd);
+ AP_DEBUG_ASSERT(rv == APR_SUCCESS);
+
+ fd.desc.f = err; /* script's stderr */
+ fd.client_data = (void *)2;
+ rv = apr_pollset_add(data->pollset, &fd);
+ AP_DEBUG_ASSERT(rv == APR_SUCCESS);
+
+ data->r = r;
+ b->data = data;
+ return b;
+}
+
+/* Create a duplicate CGI bucket using given bucket data */
+static apr_bucket *hml_bucket_dup(struct hml_bucket_data *data,
+ apr_bucket_alloc_t *list)
+{
+ apr_bucket *b = apr_bucket_alloc(sizeof(*b), list);
+ APR_BUCKET_INIT(b);
+ b->free = apr_bucket_free;
+ b->list = list;
+ b->type = &bucket_type_hml;
+ b->length = (apr_size_t)(-1);
+ b->start = -1;
+ b->data = data;
+ return b;
+}
+
+/* Handle stdout from CGI child. Duplicate of logic from the _read
+ * method of the real APR pipe bucket implementation. */
+static apr_status_t hml_read_stdout(apr_bucket *a, apr_file_t *out,
+ const char **str, apr_size_t *len)
+{
+ char *buf;
+ apr_status_t rv;
+
+ *str = NULL;
+ *len = APR_BUCKET_BUFF_SIZE;
+ buf = apr_bucket_alloc(*len, a->list); /* XXX: check for failure? */
+
+ rv = apr_file_read(out, buf, len);
+
+ if (rv != APR_SUCCESS && rv != APR_EOF) {
+ apr_bucket_free(buf);
+ return rv;
+ }
+
+ if (*len > 0) {
+ struct hml_bucket_data *data = a->data;
+ apr_bucket_heap *h;
+
+ /* Change the current bucket to refer to what we read */
+ a = apr_bucket_heap_make(a, buf, *len, apr_bucket_free);
+ h = a->data;
+ h->alloc_len = APR_BUCKET_BUFF_SIZE; /* note the real buffer size */
+ *str = buf;
+ APR_BUCKET_INSERT_AFTER(a, hml_bucket_dup(data, a->list));
+ }
+ else {
+ apr_bucket_free(buf);
+ a = apr_bucket_immortal_make(a, "", 0);
+ *str = a->data;
+ }
+ return rv;
+}
+
+/* Read method of CGI bucket: polls on stderr and stdout of the child,
+ * sending any stderr output immediately away to the error log. */
+static apr_status_t hml_bucket_read(apr_bucket *b, const char **str,
+ apr_size_t *len, apr_read_type_e block)
+{
+ struct hml_bucket_data *data = b->data;
+ apr_interval_time_t timeout;
+ apr_status_t rv;
+ int gotdata = 0;
+
+ timeout = block == APR_NONBLOCK_READ ? 0 : data->r->server->timeout;
+
+ do {
+ const apr_pollfd_t *results;
+ apr_int32_t num;
+
+ rv = apr_pollset_poll(data->pollset, timeout, &num, &results);
+ if (APR_STATUS_IS_TIMEUP(rv)) {
+ if (timeout) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, data->r,
+ "Timeout waiting for output from CGI script %s",
+ data->r->filename);
+ return rv;
+ }
+ else {
+ return APR_EAGAIN;
+ }
+ }
+ else if (APR_STATUS_IS_EINTR(rv)) {
+ continue;
+ }
+ else if (rv != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, data->r,
+ "poll failed waiting for CGI child");
+ return rv;
+ }
+
+ for (; num; num--, results++) {
+ if (results[0].client_data == (void *)1) {
+ /* stdout */
+ rv = hml_read_stdout(b, results[0].desc.f, str, len);
+ if (APR_STATUS_IS_EOF(rv)) {
+ rv = APR_SUCCESS;
+ }
+ gotdata = 1;
+ } else {
+ /* stderr */
+ apr_status_t rv2 = log_script_err(data->r, results[0].desc.f);
+ if (APR_STATUS_IS_EOF(rv2)) {
+ apr_pollset_remove(data->pollset, &results[0]);
+ }
+ }
+ }
+
+ } while (!gotdata);
+
+ return rv;
+}
+
+static const apr_bucket_type_t bucket_type_hml = {
+ "HML", 5, APR_BUCKET_DATA,
+ apr_bucket_destroy_noop,
+ hml_bucket_read,
+ apr_bucket_setaside_notimpl,
+ apr_bucket_split_notimpl,
+ apr_bucket_copy_notimpl
+};
+
+#endif
+
+static void add_hml_vars (request_rec* r, hml_dir_conf* dirconf, const char* root) {
+ static const char* key = "HMLSEARCHPATH";
+ size_t s;
+
+ if (dirconf->searchpath) {
+ s = strlen (root);
+ if (s > 0 && root[s - 1] == '/')
+ s --;
+ if (apr_table_get (r->subprocess_env, key) == NULL) {
+ if (memcmp (root, dirconf->searchpath, s) == 0) {
+ apr_table_setn (r->subprocess_env, key, dirconf->searchpath + s);
+ }
+ }
+ }
+}
+
+static int hml_handler(request_rec *r)
+{
+ apr_size_t dbpos = 0;
+ const char *argv0;
+ const char *command;
+ const char **argv;
+ char *dbuf = NULL;
+ apr_file_t *script_out = NULL, *script_in = NULL, *script_err = NULL;
+ apr_bucket_brigade *bb;
+ apr_bucket *b;
+// int is_included;
+ int seen_eos, child_stopped_reading;
+ apr_pool_t *p;
+ hml_server_conf *conf;
+ apr_status_t rv;
+ hml_exec_info_t e_info;
+ conn_rec *c = r->connection;
+ hml_dir_conf* dirconf;
+ const char* root;
+
+ if (strcmp(r->handler, "hml-handler")) {
+ return DECLINED;
+ }
+
+ p = r->main ? r->main->pool : r->pool;
+
+ argv0 = apr_filepath_name_get(r->filename);
+ conf = ap_get_module_config(r->server->module_config, &hml_module);
+ dirconf = ap_get_module_config (r->per_dir_config, &hml_module);
+
+ if (dirconf->hmldir == NULL) {
+ ap_log_rerror (APLOG_MARK, APLOG_ERR, 0, r, "HmlDir is not defined");
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ if (r->finfo.filetype == 0)
+ return log_scripterror(r, conf, HTTP_NOT_FOUND, 0,
+ "script not found or unable to stat");
+ if (r->finfo.filetype == APR_DIR)
+ return log_scripterror(r, conf, HTTP_FORBIDDEN, 0,
+ "attempt to invoke directory as script");
+
+ ap_add_common_vars(r);
+ ap_add_cgi_vars(r);
+// hml_document_root (r);
+// root = apr_table_get (r->subprocess_env, "DOCUMENT_ROOT");
+ root = ap_document_root (r);
+ add_hml_vars (r, dirconf, root);
+
+ e_info.process_hml = 1;
+ e_info.cmd_type = APR_PROGRAM;
+ e_info.detached = 0;
+ e_info.in_pipe = APR_CHILD_BLOCK;
+ e_info.out_pipe = APR_CHILD_BLOCK;
+ e_info.err_pipe = APR_CHILD_BLOCK;
+// e_info.prog_type = RUN_AS_CGI;
+ e_info.bb = NULL;
+// e_info.ctx = NULL;
+ e_info.next = NULL;
+ e_info.addrspace = 0;
+ e_info.dirconf = dirconf;
+
+ /* build the command line */
+ if ((rv = hml_build_command(&command, &argv, r, p, &e_info)) != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
+ "don't know how to spawn child process: %s",
+ r->filename);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ /* run the script in its own process */
+ if ((rv = run_hml_child(&script_out, &script_in, &script_err,
+ command, argv, r, p, &e_info)) != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
+ "couldn't spawn child process: %s", r->filename);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ /* Transfer any put/post args, CERN style...
+ * Note that we already ignore SIGPIPE in the core server.
+ */
+ bb = apr_brigade_create(r->pool, c->bucket_alloc);
+ seen_eos = 0;
+ child_stopped_reading = 0;
+ if (conf->logname) {
+ dbuf = apr_palloc(r->pool, conf->bufbytes + 1);
+ dbpos = 0;
+ }
+ do {
+ apr_bucket *bucket;
+
+ rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES,
+ APR_BLOCK_READ, HUGE_STRING_LEN);
+
+ if (rv != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
+ "Error reading request entity data");
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ for (bucket = APR_BRIGADE_FIRST(bb);
+ bucket != APR_BRIGADE_SENTINEL(bb);
+ bucket = APR_BUCKET_NEXT(bucket))
+ {
+ const char *data;
+ apr_size_t len;
+
+ if (APR_BUCKET_IS_EOS(bucket)) {
+ seen_eos = 1;
+ break;
+ }
+
+ /* We can't do much with this. */
+ if (APR_BUCKET_IS_FLUSH(bucket)) {
+ continue;
+ }
+
+ /* If the child stopped, we still must read to EOS. */
+ if (child_stopped_reading) {
+ continue;
+ }
+
+ /* read */
+ apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ);
+
+ if (conf->logname && dbpos < conf->bufbytes) {
+ int cursize;
+
+ if ((dbpos + len) > conf->bufbytes) {
+ cursize = conf->bufbytes - dbpos;
+ }
+ else {
+ cursize = len;
+ }
+ memcpy(dbuf + dbpos, data, cursize);
+ dbpos += cursize;
+ }
+
+ /* Keep writing data to the child until done or too much time
+ * elapses with no progress or an error occurs.
+ */
+ rv = apr_file_write_full(script_out, data, len, NULL);
+
+ if (rv != APR_SUCCESS) {
+ /* silly script stopped reading, soak up remaining message */
+ child_stopped_reading = 1;
+ }
+ }
+ apr_brigade_cleanup(bb);
+ }
+ while (!seen_eos);
+
+ if (conf->logname) {
+ dbuf[dbpos] = '\0';
+ }
+ /* Is this flush really needed? */
+ apr_file_flush(script_out);
+ apr_file_close(script_out);
+
+ AP_DEBUG_ASSERT(script_in != NULL);
+
+ apr_brigade_cleanup(bb);
+
+#if APR_FILES_AS_SOCKETS
+ apr_file_pipe_timeout_set(script_in, 0);
+ apr_file_pipe_timeout_set(script_err, 0);
+
+ b = hml_bucket_create(r, script_in, script_err, c->bucket_alloc);
+#else
+ b = apr_bucket_pipe_create(script_in, c->bucket_alloc);
+#endif
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ b = apr_bucket_eos_create(c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+
+ /* Handle script return... */
+// if (!nph) {
+ {
+ const char *location;
+ char sbuf[MAX_STRING_LEN];
+ int ret;
+
+ if ((ret = ap_scan_script_header_err_brigade(r, bb, sbuf))) {
+ ret = log_script(r, conf, ret, dbuf, sbuf, bb, script_err);
+
+ /*
+ * ret could be HTTP_NOT_MODIFIED in the case that the CGI script
+ * does not set an explicit status and ap_meets_conditions, which
+ * is called by ap_scan_script_header_err_brigade, detects that
+ * the conditions of the requests are met and the response is
+ * not modified.
+ * In this case set r->status and return OK in order to prevent
+ * running through the error processing stack as this would
+ * break with mod_cache, if the conditions had been set by
+ * mod_cache itself to validate a stale entity.
+ * BTW: We circumvent the error processing stack anyway if the
+ * CGI script set an explicit status code (whatever it is) and
+ * the only possible values for ret here are:
+ *
+ * HTTP_NOT_MODIFIED (set by ap_meets_conditions)
+ * HTTP_PRECONDITION_FAILED (set by ap_meets_conditions)
+ * HTTP_INTERNAL_SERVER_ERROR (if something went wrong during the
+ * processing of the response of the CGI script, e.g broken headers
+ * or a crashed CGI process).
+ */
+ if (ret == HTTP_NOT_MODIFIED) {
+ r->status = ret;
+ return OK;
+ }
+
+ return ret;
+ }
+
+ location = apr_table_get(r->headers_out, "Location");
+
+ if (location && r->status == 200) {
+ /* For a redirect whether internal or not, discard any
+ * remaining stdout from the script, and log any remaining
+ * stderr output, as normal. */
+ discard_script_output(bb);
+ apr_brigade_destroy(bb);
+ apr_file_pipe_timeout_set(script_err, r->server->timeout);
+ log_script_err(r, script_err);
+ }
+
+ if (location && location[0] == '/' && r->status == 200) {
+ /* This redirect needs to be a GET no matter what the original
+ * method was.
+ */
+ r->method = apr_pstrdup(r->pool, "GET");
+ r->method_number = M_GET;
+
+ /* We already read the message body (if any), so don't allow
+ * the redirected request to think it has one. We can ignore
+ * Transfer-Encoding, since we used REQUEST_CHUNKED_ERROR.
+ */
+ apr_table_unset(r->headers_in, "Content-Length");
+
+ ap_internal_redirect_handler(location, r);
+ return OK;
+ }
+ else if (location && r->status == 200) {
+ /* XX Note that if a script wants to produce its own Redirect
+ * body, it now has to explicitly *say* "Status: 302"
+ */
+ return HTTP_MOVED_TEMPORARILY;
+ }
+
+ rv = ap_pass_brigade(r->output_filters, bb);
+ }
+
+ /* don't soak up script output if errors occurred writing it
+ * out... otherwise, we prolong the life of the script when the
+ * connection drops or we stopped sending output for some other
+ * reason */
+ if (rv == APR_SUCCESS && !r->connection->aborted) {
+ apr_file_pipe_timeout_set(script_err, r->server->timeout);
+ log_script_err(r, script_err);
+ }
+
+ apr_file_close(script_err);
+
+ return OK; /* NOT r->status, even if it has changed. */
+}
+
+
+static void hml_register_hooks(apr_pool_t *p)
+{
+ ap_hook_handler(hml_handler, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+module AP_MODULE_DECLARE_DATA hml_module =
+{
+ STANDARD20_MODULE_STUFF,
+ create_hml_dir_config, /* create per-dir config structures */
+ merge_hml_dir_config, /* merge per-dir config structures */
+ create_hml_config, /* server config */
+ merge_hml_config, /* merge server config */
+ hml_cmds, /* command apr_table_t */
+ hml_register_hooks /* register hooks */
+};
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