Time to rename the child

mod_php4.c

@@ -0,0 +1,487 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP HTML Embedded Scripting Language Version 3.0                     |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997,1998 PHP Development Team (See Credits file)      |
+   +----------------------------------------------------------------------+
+   | This program is free software; you can redistribute it and/or modify |
+   | it under the terms of one of the following licenses:                 |
+   |                                                                      |
+   |  A) the GNU General Public License as published by the Free Software |
+   |     Foundation; either version 2 of the License, or (at your option) |
+   |     any later version.                                               |
+   |                                                                      |
+   |  B) the PHP License as published by the PHP Development Team and     |
+   |     included in the distribution in the file: LICENSE                |
+   |                                                                      |
+   | This program is distributed in the hope that it will be useful,      |
+   | but WITHOUT ANY WARRANTY; without even the implied warranty of       |
+   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        |
+   | GNU General Public License for more details.                         |
+   |                                                                      |
+   | You should have received a copy of both licenses referred to here.   |
+   | If you did not, or have any questions about PHP licensing, please    |
+   | contact core@php.net.                                                |
+   +----------------------------------------------------------------------+
+   | Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca>                       |
+   | (with helpful hints from Dean Gaudet <dgaudet@arctic.org>            |
+   | PHP 4.0 patches by Zeev Suraski <zeev@zend.com>                      |
+   +----------------------------------------------------------------------+
+ */
+/* $Id$ */
+
+#include "httpd.h"
+#include "http_config.h"
+#if MODULE_MAGIC_NUMBER > 19980712
+#include "ap_compat.h"
+#else
+#if MODULE_MAGIC_NUMBER > 19980324
+#include "compat.h"
+#endif
+#endif
+#include "http_core.h"
+#include "http_main.h"
+#include "http_protocol.h"
+#include "http_request.h"
+#include "http_log.h"
+
+#include "php.h"
+#include "php_ini.h"
+#include "SAPI.h"
+#include "main.h"
+
+#include "util_script.h"
+
+#include "php_version.h"
+#include "mod_php4.h"
+#if HAVE_MOD_DAV
+# include "mod_dav.h"
+#endif
+
+PHPAPI int apache_php3_module_main(request_rec *r, int fd, int display_source_mode SLS_DC);
+
+/* ### these should be defined in mod_php4.h or somewhere else */
+#define USE_PATH 1
+#define IGNORE_URL 2
+
+module MODULE_VAR_EXPORT php4_module;
+
+int saved_umask;
+
+
+#if WIN32|WINNT
+/* popenf isn't working on Windows, use open instead*/
+# ifdef popenf
+#  undef popenf
+# endif
+# define popenf(p,n,f,m) open((n),(f),(m))
+# ifdef pclosef
+#  undef pclosef
+# endif
+# define pclosef(p,f) close(f)
+#else
+# define php3i_popenf(p,n,f,m) popenf((p),(n),(f),(m))
+#endif
+
+php_apache_info_struct php_apache_info;		/* active config */
+
+
+
+void php3_save_umask()
+{
+	saved_umask = umask(077);
+	umask(saved_umask);
+}
+
+
+static int zend_apache_ub_write(const char *str, uint str_length)
+{
+	SLS_FETCH();
+	
+	if (SG(server_context)) {
+		return rwrite(str, str_length, (request_rec *) SG(server_context));
+	} else {
+		return fwrite(str, 1, str_length, stdout);
+	}
+}
+
+
+int sapi_apache_read_post(char *buffer, uint count_bytes SLS_DC)
+{
+	uint total_read_bytes=0, read_bytes;
+	request_rec *r = (request_rec *) SG(server_context);
+	void (*handler)(int);
+
+	handler = signal(SIGPIPE, SIG_IGN);
+	while (total_read_bytes<count_bytes) {
+		hard_timeout("Read POST information", r); /* start timeout timer */
+		read_bytes = get_client_block(r, buffer+total_read_bytes, count_bytes-total_read_bytes);
+		reset_timeout(r);
+		if (read_bytes<=0) {
+			break;
+		}
+		total_read_bytes += read_bytes;
+	}
+	signal(SIGPIPE, handler);	
+	return total_read_bytes;
+}
+
+
+char *sapi_apache_read_cookies(SLS_D)
+{
+	return (char *) table_get(((request_rec *) SG(server_context))->subprocess_env, "HTTP_COOKIE");
+}
+
+
+int sapi_apache_header_handler(sapi_header_struct *sapi_header, sapi_headers_struct *sapi_headers SLS_DC)
+{
+	char *header_name, *header_content, *p;
+	request_rec *r = (request_rec *) SG(server_context);
+
+	header_name = sapi_header->header;
+
+	header_content = p = strchr(header_name, ':');
+	if (!p) {
+		return 0;
+	}
+
+	*p = 0;
+	do {
+		header_content++;
+	} while (*header_content==' ');
+
+	if (!strcasecmp(header_name, "Content-Type")) {
+		r->content_type = pstrdup(r->pool, header_content);
+	} else {
+		table_set(r->headers_out, header_name, header_content);
+	}
+
+	*p = ':';  /* a well behaved header handler shouldn't change its original arguments */
+
+	efree(sapi_header->header);
+	
+	return 0;  /* don't use the default SAPI mechanism, Apache duplicates this functionality */
+}
+
+
+int sapi_apache_send_headers(sapi_headers_struct *sapi_headers SLS_DC)
+{
+	((request_rec *) SG(server_context))->status = SG(sapi_headers).http_response_code;
+	send_http_header((request_rec *) SG(server_context));
+	return SAPI_HEADER_SENT_SUCCESSFULLY;
+}
+
+
+sapi_module_struct sapi_module = {
+	"PHP Language",					/* name */
+									
+	php_module_startup,				/* startup */
+	php_module_shutdown_wrapper,	/* shutdown */
+
+	zend_apache_ub_write,			/* unbuffered write */
+
+	php3_error,						/* error handler */
+
+	sapi_apache_header_handler,		/* header handler */
+	sapi_apache_send_headers,		/* send headers handler */
+	NULL,							/* send header handler */
+
+	sapi_apache_read_post,			/* read POST data */
+	sapi_apache_read_cookies		/* read Cookies */
+};
+
+
+void php3_restore_umask()
+{
+	umask(saved_umask);
+}
+
+
+static void init_request_info(SLS_D)
+{
+	request_rec *r = ((request_rec *) SG(server_context));
+	char *content_length = (char *) table_get(r->subprocess_env, "CONTENT_LENGTH");
+	const char *authorization=NULL;
+	char *tmp;
+
+	SG(request_info).query_string = r->args;
+	SG(request_info).path_translated = r->filename;
+	SG(request_info).request_uri = r->uri;
+	SG(request_info).request_method = r->method;
+	SG(request_info).content_type = (char *) table_get(r->subprocess_env, "CONTENT_TYPE");
+	SG(request_info).content_length = (content_length ? atoi(content_length) : 0);
+
+	if (r->headers_in) {
+		authorization = table_get(r->headers_in, "Authorization");
+	}
+	if (authorization
+		&& !auth_type(r)
+		&& !strcmp(getword(r->pool, &authorization, ' '), "Basic")) {
+		tmp = uudecode(r->pool, authorization);
+		SG(request_info).auth_user = getword_nulls_nc(r->pool, &tmp, ':');
+		if (SG(request_info).auth_user) {
+			SG(request_info).auth_user = estrdup(SG(request_info).auth_user);
+		}
+		SG(request_info).auth_password = tmp;
+		if (SG(request_info).auth_password) {
+			SG(request_info).auth_password = estrdup(SG(request_info).auth_password);
+		}
+	} else {
+		SG(request_info).auth_user = NULL;
+		SG(request_info).auth_password = NULL;
+	}
+}
+
+
+int send_php3(request_rec *r, int display_source_mode, char *filename)
+{
+	int fd, retval;
+	SLS_FETCH();
+
+	/* We don't accept OPTIONS requests, but take everything else */
+	if (r->method_number == M_OPTIONS) {
+		r->allowed |= (1 << METHODS) - 1;
+		return DECLINED;
+	}
+
+	/* Make sure file exists */
+	if (filename == NULL && r->finfo.st_mode == 0) {
+		return NOT_FOUND;
+	}
+
+	/* If PHP parser engine has been turned off with a "php3_engine off"
+	 * directive, then decline to handle this request
+	 */
+	if (!php_apache_info.engine) {
+		r->content_type = "text/html";
+		r->allowed |= (1 << METHODS) - 1;
+		return DECLINED;
+	}
+	if (filename == NULL) {
+		filename = r->filename;
+	}
+	/* Open the file */
+	if ((fd = popenf(r->pool, filename, O_RDONLY, 0)) == -1) {
+		log_reason("file permissions deny server access", filename, r);
+		return FORBIDDEN;
+	}
+
+	/* Apache 1.2 has a more complex mechanism for reading POST data */
+#if MODULE_MAGIC_NUMBER > 19961007
+	if ((retval = setup_client_block(r, REQUEST_CHUNKED_ERROR)))
+		return retval;
+#endif
+
+	if (php_apache_info.last_modified) {
+#if MODULE_MAGIC_NUMBER < 19970912
+		if ((retval = set_last_modified(r, r->finfo.st_mtime))) {
+			return retval;
+		}
+#else
+		update_mtime (r, r->finfo.st_mtime);
+		set_last_modified(r);
+		set_etag(r);
+#endif
+	}
+	/* Assume output will be HTML.  Individual scripts may change this 
+	   further down the line */
+	r->content_type = "text/html";
+
+	/* Init timeout */
+	hard_timeout("send", r);
+
+	SG(server_context) = r;
+	init_request_info(SLS_C);
+	
+	php3_save_umask();
+	chdir_file(filename);
+	add_common_vars(r);
+	add_cgi_vars(r);
+	apache_php3_module_main(r, fd, display_source_mode SLS_CC);
+
+	/* Done, restore umask, turn off timeout, close file and return */
+	php3_restore_umask();
+	kill_timeout(r);
+	pclosef(r->pool, fd);
+	return OK;
+}
+
+
+int send_parsed_php3(request_rec * r)
+{
+	return send_php3(r, 0, NULL);
+}
+
+
+int send_parsed_php3_source(request_rec * r)
+{
+	return send_php3(r, 0, NULL);
+}
+
+
+/*
+ * Create the per-directory config structure with defaults
+ */
+static void *php3_create_dir(pool * p, char *dummy)
+{
+	php_apache_info_struct *new;
+
+	new = (php_apache_info_struct *) palloc(p, sizeof(php_apache_info_struct));
+	memcpy(new, &php_apache_info, sizeof(php_apache_info_struct));
+
+	return new;
+}
+
+
+#if MODULE_MAGIC_NUMBER > 19961007
+#define CONST_PREFIX const
+#else
+#define CONST_PREFIX
+#endif
+
+CONST_PREFIX char *php_apache_value_handler(cmd_parms *cmd, php_apache_info_struct *conf, char *arg1, char *arg2)
+{
+	php_alter_ini_entry(arg1, strlen(arg1)+1, arg2, strlen(arg2)+1, PHP_INI_PERDIR);
+	return NULL;
+}
+
+
+CONST_PREFIX char *php_apache_flag_handler(cmd_parms *cmd, php_apache_info_struct *conf, char *arg1, char *arg2)
+{
+	char bool_val[2];
+
+	if (!strcmp(arg2, "On")) {
+		bool_val[0] = '1';
+	} else {
+		bool_val[0] = '0';
+	}
+	bool_val[1] = 0;
+	
+	php_alter_ini_entry(arg1, strlen(arg1)+1, bool_val, 2, PHP_INI_PERDIR);
+	return NULL;
+}
+
+
+int php3_xbithack_handler(request_rec * r)
+{
+	php_apache_info_struct *conf;
+
+	conf = (php_apache_info_struct *) get_module_config(r->per_dir_config, &php4_module);
+	if (!(r->finfo.st_mode & S_IXUSR)) {
+		r->allowed |= (1 << METHODS) - 1;
+		return DECLINED;
+	}
+	if (conf->xbithack == 0) {
+		r->allowed |= (1 << METHODS) - 1;
+		return DECLINED;
+	}
+	return send_parsed_php3(r);
+}
+
+
+void php3_init_handler(server_rec *s, pool *p)
+{
+	register_cleanup(p, NULL, php_module_shutdown, php_module_shutdown_for_exec);
+	php_module_startup(&sapi_module);
+#if MODULE_MAGIC_NUMBER >= 19980527
+	ap_add_version_component("PHP/" PHP_VERSION);
+#endif
+}
+
+
+#if HAVE_MOD_DAV
+
+extern int phpdav_mkcol_test_handler(request_rec *r);
+extern int phpdav_mkcol_create_handler(request_rec *r);
+
+/* conf is being read twice (both here and in send_php3()) */
+int send_parsed_php3_dav_script(request_rec *r)
+{
+	php_apache_info_struct *conf;
+
+	conf = (php_apache_info_struct *) get_module_config(r->per_dir_config,
+													&php4_module);
+	return send_php3(r, 0, 0, conf->dav_script);
+}
+
+static int php3_type_checker(request_rec *r)
+{
+	php_apache_info_struct *conf;
+
+	conf = (php_apache_info_struct *)get_module_config(r->per_dir_config,
+												   &php4_module);
+
+    /* If DAV support is enabled, use mod_dav's type checker. */
+    if (conf->dav_script) {
+		dav_api_set_request_handler(r, send_parsed_php3_dav_script);
+		dav_api_set_mkcol_handlers(r, phpdav_mkcol_test_handler,
+								   phpdav_mkcol_create_handler);
+		/* leave the rest of the request to mod_dav */
+		return dav_api_type_checker(r);
+	}
+
+    return DECLINED;
+}
+
+#else /* HAVE_MOD_DAV */
+
+# define php3_type_checker NULL
+
+#endif /* HAVE_MOD_DAV */
+
+
+handler_rec php3_handlers[] =
+{
+	{"application/x-httpd-php3", send_parsed_php3},
+	{"application/x-httpd-php3-source", send_parsed_php3_source},
+	{"text/html", php3_xbithack_handler},
+	{NULL}
+};
+
+
+command_rec php3_commands[] =
+{
+	{"php4_value",		php_apache_value_handler, NULL, OR_OPTIONS, TAKE2, "PHP Value Modifier"},
+	{"php4_flag",			php_apache_flag_handler, NULL, OR_OPTIONS, TAKE2, "PHP Flag Modifier"},
+	{NULL}
+};
+
+
+
+module MODULE_VAR_EXPORT php4_module =
+{
+	STANDARD_MODULE_STUFF,
+	php3_init_handler,			/* initializer */
+	php3_create_dir,			/* per-directory config creator */
+	NULL,						/* dir merger */
+	NULL,						/* per-server config creator */
+	NULL, 						/* merge server config */
+	php3_commands,				/* command table */
+	php3_handlers,				/* handlers */
+	NULL,						/* filename translation */
+	NULL,						/* check_user_id */
+	NULL,						/* check auth */
+	NULL,						/* check access */
+	php3_type_checker,			/* type_checker */
+	NULL,						/* fixups */
+	NULL						/* logger */
+#if MODULE_MAGIC_NUMBER >= 19970103
+	,NULL						/* header parser */
+#endif
+#if MODULE_MAGIC_NUMBER >= 19970719
+	,NULL             			/* child_init */
+#endif
+#if MODULE_MAGIC_NUMBER >= 19970728
+	,NULL						/* child_exit */
+#endif
+#if MODULE_MAGIC_NUMBER >= 19970902
+	,NULL						/* post read-request */
+#endif
+};
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */