The 'pglobal' tool is quite handy indeed :-) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@200620 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1152 lines
28 KiB
C
1152 lines
28 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \brief http server for AMI access
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* This program implements a tiny http server
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* and was inspired by micro-httpd by Jef Poskanzer
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*
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* \ref AstHTTP - AMI over the http protocol
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <time.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/signal.h>
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#include <fcntl.h>
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#include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
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#include "asterisk/network.h"
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#include "asterisk/cli.h"
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#include "asterisk/tcptls.h"
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#include "asterisk/http.h"
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#include "asterisk/utils.h"
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#include "asterisk/strings.h"
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#include "asterisk/config.h"
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#include "asterisk/stringfields.h"
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#include "asterisk/ast_version.h"
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#include "asterisk/manager.h"
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#include "asterisk/_private.h"
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#include "asterisk/astobj2.h"
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#define MAX_PREFIX 80
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/* See http.h for more information about the SSL implementation */
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#if defined(HAVE_OPENSSL) && (defined(HAVE_FUNOPEN) || defined(HAVE_FOPENCOOKIE))
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#define DO_SSL /* comment in/out if you want to support ssl */
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#endif
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static struct ast_tls_config http_tls_cfg;
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static void *httpd_helper_thread(void *arg);
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/*!
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* we have up to two accepting threads, one for http, one for https
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*/
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static struct ast_tcptls_session_args http_desc = {
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.accept_fd = -1,
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.master = AST_PTHREADT_NULL,
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.tls_cfg = NULL,
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.poll_timeout = -1,
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.name = "http server",
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.accept_fn = ast_tcptls_server_root,
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.worker_fn = httpd_helper_thread,
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};
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static struct ast_tcptls_session_args https_desc = {
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.accept_fd = -1,
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.master = AST_PTHREADT_NULL,
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.tls_cfg = &http_tls_cfg,
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.poll_timeout = -1,
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.name = "https server",
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.accept_fn = ast_tcptls_server_root,
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.worker_fn = httpd_helper_thread,
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};
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static AST_RWLIST_HEAD_STATIC(uris, ast_http_uri); /*!< list of supported handlers */
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/* all valid URIs must be prepended by the string in prefix. */
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static char prefix[MAX_PREFIX];
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static int enablestatic;
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/*! \brief Limit the kinds of files we're willing to serve up */
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static struct {
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const char *ext;
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const char *mtype;
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} mimetypes[] = {
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{ "png", "image/png" },
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{ "xml", "text/xml" },
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{ "jpg", "image/jpeg" },
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{ "js", "application/x-javascript" },
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{ "wav", "audio/x-wav" },
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{ "mp3", "audio/mpeg" },
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{ "svg", "image/svg+xml" },
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{ "svgz", "image/svg+xml" },
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{ "gif", "image/gif" },
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};
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struct http_uri_redirect {
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AST_LIST_ENTRY(http_uri_redirect) entry;
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char *dest;
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char target[0];
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};
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static AST_RWLIST_HEAD_STATIC(uri_redirects, http_uri_redirect);
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static const struct ast_cfhttp_methods_text {
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enum ast_http_method method;
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const char text[];
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} ast_http_methods_text[] = {
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{ AST_HTTP_UNKNOWN, "UNKNOWN" },
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{ AST_HTTP_GET, "GET" },
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{ AST_HTTP_POST, "POST" },
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{ AST_HTTP_HEAD, "HEAD" },
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{ AST_HTTP_PUT, "PUT" },
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};
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const char *ast_get_http_method(enum ast_http_method method)
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{
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return ast_http_methods_text[method].text;
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}
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const char *ast_http_ftype2mtype(const char *ftype)
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{
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int x;
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if (ftype) {
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for (x = 0; x < ARRAY_LEN(mimetypes); x++) {
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if (!strcasecmp(ftype, mimetypes[x].ext)) {
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return mimetypes[x].mtype;
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}
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}
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}
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return NULL;
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}
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uint32_t ast_http_manid_from_vars(struct ast_variable *headers)
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{
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uint32_t mngid = 0;
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struct ast_variable *v, *cookies;
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cookies = ast_http_get_cookies(headers);
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for (v = cookies; v; v = v->next) {
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if (!strcasecmp(v->name, "mansession_id")) {
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sscanf(v->value, "%x", &mngid);
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break;
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}
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}
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if (cookies) {
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ast_variables_destroy(cookies);
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}
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return mngid;
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}
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void ast_http_prefix(char *buf, int len)
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{
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if (buf) {
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ast_copy_string(buf, prefix, len);
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}
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}
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static int static_callback(struct ast_tcptls_session_instance *ser,
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const struct ast_http_uri *urih, const char *uri,
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enum ast_http_method method, struct ast_variable *get_vars,
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struct ast_variable *headers)
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{
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char *path;
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const char *ftype;
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const char *mtype;
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char wkspace[80];
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struct stat st;
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int len;
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int fd;
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struct ast_str *http_header;
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struct timeval tv;
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struct ast_tm tm;
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char timebuf[80], etag[23];
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struct ast_variable *v;
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int not_modified = 0;
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if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
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ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
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return -1;
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}
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/* Yuck. I'm not really sold on this, but if you don't deliver static content it makes your configuration
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substantially more challenging, but this seems like a rather irritating feature creep on Asterisk. */
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if (!enablestatic || ast_strlen_zero(uri)) {
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goto out403;
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}
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/* Disallow any funny filenames at all */
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if ((uri[0] < 33) || strchr("./|~@#$%^&*() \t", uri[0])) {
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goto out403;
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}
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if (strstr(uri, "/..")) {
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goto out403;
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}
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if ((ftype = strrchr(uri, '.'))) {
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ftype++;
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}
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if (!(mtype = ast_http_ftype2mtype(ftype))) {
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snprintf(wkspace, sizeof(wkspace), "text/%s", S_OR(ftype, "plain"));
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}
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/* Cap maximum length */
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if ((len = strlen(uri) + strlen(ast_config_AST_DATA_DIR) + strlen("/static-http/") + 5) > 1024) {
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goto out403;
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}
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path = alloca(len);
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sprintf(path, "%s/static-http/%s", ast_config_AST_DATA_DIR, uri);
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if (stat(path, &st)) {
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goto out404;
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}
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if (S_ISDIR(st.st_mode)) {
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goto out404;
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}
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fd = open(path, O_RDONLY);
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if (fd < 0) {
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goto out403;
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}
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if (strstr(path, "/private/") && !astman_is_authed(ast_http_manid_from_vars(headers))) {
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goto out403;
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}
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/* make "Etag:" http header value */
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snprintf(etag, sizeof(etag), "\"%ld\"", (long)st.st_mtime);
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/* make "Last-Modified:" http header value */
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tv.tv_sec = st.st_mtime;
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tv.tv_usec = 0;
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ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&tv, &tm, "GMT"));
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/* check received "If-None-Match" request header and Etag value for file */
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for (v = headers; v; v = v->next) {
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if (!strcasecmp(v->name, "If-None-Match")) {
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if (!strcasecmp(v->value, etag)) {
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not_modified = 1;
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}
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break;
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}
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}
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if ( (http_header = ast_str_create(255)) == NULL) {
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return -1;
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}
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ast_str_set(&http_header, 0, "Content-type: %s\r\n"
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"ETag: %s\r\n"
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"Last-Modified: %s",
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mtype,
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etag,
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timebuf);
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/* ast_http_send() frees http_header, so we don't need to do it before returning */
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if (not_modified) {
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ast_http_send(ser, method, 304, "Not Modified", http_header, NULL, 0, 1);
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} else {
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ast_http_send(ser, method, 200, NULL, http_header, NULL, fd, 1); /* static content flag is set */
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}
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close(fd);
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return 0;
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out404:
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ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
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return -1;
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out403:
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ast_http_error(ser, 403, "Access Denied", "You do not have permission to access the requested URL.");
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return -1;
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}
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static int httpstatus_callback(struct ast_tcptls_session_instance *ser,
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const struct ast_http_uri *urih, const char *uri,
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enum ast_http_method method, struct ast_variable *get_vars,
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struct ast_variable *headers)
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{
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struct ast_str *out;
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struct ast_variable *v, *cookies = NULL;
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if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
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ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
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return -1;
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}
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if ( (out = ast_str_create(512)) == NULL) {
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return -1;
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}
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ast_str_append(&out, 0,
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"<title>Asterisk HTTP Status</title>\r\n"
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"<body bgcolor=\"#ffffff\">\r\n"
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"<table bgcolor=\"#f1f1f1\" align=\"center\"><tr><td bgcolor=\"#e0e0ff\" colspan=\"2\" width=\"500\">\r\n"
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"<h2> Asterisk™ HTTP Status</h2></td></tr>\r\n");
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ast_str_append(&out, 0, "<tr><td><i>Prefix</i></td><td><b>%s</b></td></tr>\r\n", prefix);
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ast_str_append(&out, 0, "<tr><td><i>Bind Address</i></td><td><b>%s</b></td></tr>\r\n",
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ast_inet_ntoa(http_desc.old_address.sin_addr));
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ast_str_append(&out, 0, "<tr><td><i>Bind Port</i></td><td><b>%d</b></td></tr>\r\n",
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ntohs(http_desc.old_address.sin_port));
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if (http_tls_cfg.enabled) {
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ast_str_append(&out, 0, "<tr><td><i>SSL Bind Port</i></td><td><b>%d</b></td></tr>\r\n",
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ntohs(https_desc.old_address.sin_port));
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}
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ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
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for (v = get_vars; v; v = v->next) {
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ast_str_append(&out, 0, "<tr><td><i>Submitted GET Variable '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
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}
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ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
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cookies = ast_http_get_cookies(headers);
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for (v = cookies; v; v = v->next) {
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ast_str_append(&out, 0, "<tr><td><i>Cookie '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
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}
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ast_variables_destroy(cookies);
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ast_str_append(&out, 0, "</table><center><font size=\"-1\"><i>Asterisk and Digium are registered trademarks of Digium, Inc.</i></font></center></body>\r\n");
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ast_http_send(ser, method, 200, NULL, NULL, out, 0, 0);
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return 0;
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}
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static struct ast_http_uri statusuri = {
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.callback = httpstatus_callback,
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.description = "Asterisk HTTP General Status",
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.uri = "httpstatus",
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.has_subtree = 0,
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.data = NULL,
|
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.key = __FILE__,
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};
|
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|
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static struct ast_http_uri staticuri = {
|
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.callback = static_callback,
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.description = "Asterisk HTTP Static Delivery",
|
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.uri = "static",
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.has_subtree = 1,
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.data = NULL,
|
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.key= __FILE__,
|
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};
|
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|
|
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/* send http/1.1 responce */
|
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/* free content variable and close socket*/
|
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void ast_http_send(struct ast_tcptls_session_instance *ser,
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enum ast_http_method method, int status_code, const char *status_title,
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struct ast_str *http_header, struct ast_str *out, const int fd,
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unsigned int static_content)
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{
|
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struct timeval now = ast_tvnow();
|
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struct ast_tm tm;
|
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char timebuf[80];
|
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int content_length = 0;
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if (!ser || 0 == ser->f) {
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return;
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}
|
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ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&now, &tm, "GMT"));
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/* calc conetnt length */
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if (out) {
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content_length += strlen(ast_str_buffer(out));
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}
|
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if (fd) {
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content_length += lseek(fd, 0, SEEK_END);
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lseek(fd, 0, SEEK_SET);
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}
|
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|
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/* send http header */
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fprintf(ser->f, "HTTP/1.1 %d %s\r\n"
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"Server: Asterisk/%s\r\n"
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"Date: %s\r\n"
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"Connection: close\r\n"
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"%s"
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"Content-Length: %d\r\n"
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"%s\r\n\r\n",
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status_code, status_title ? status_title : "OK",
|
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ast_get_version(),
|
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timebuf,
|
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static_content ? "" : "Cache-Control: no-cache, no-store\r\n",
|
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content_length,
|
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http_header ? ast_str_buffer(http_header) : ""
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|
);
|
|
|
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/* send content */
|
|
if (method != AST_HTTP_HEAD || status_code >= 400) {
|
|
if (out) {
|
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fprintf(ser->f, "%s", ast_str_buffer(out));
|
|
}
|
|
|
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if (fd) {
|
|
char buf[256];
|
|
int len;
|
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while ((len = read(fd, buf, sizeof(buf))) > 0) {
|
|
if (fwrite(buf, len, 1, ser->f) != len) {
|
|
ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (http_header) {
|
|
ast_free(http_header);
|
|
}
|
|
if (out) {
|
|
ast_free(out);
|
|
}
|
|
|
|
fclose(ser->f);
|
|
ser->f = 0;
|
|
return;
|
|
}
|
|
|
|
/* Send http "401 Unauthorized" responce and close socket*/
|
|
void ast_http_auth(struct ast_tcptls_session_instance *ser, const char *realm,
|
|
const unsigned long nonce, const unsigned long opaque, int stale,
|
|
const char *text)
|
|
{
|
|
struct ast_str *http_headers = ast_str_create(128);
|
|
struct ast_str *out = ast_str_create(512);
|
|
|
|
if (!http_headers || !out) {
|
|
ast_free(http_headers);
|
|
ast_free(out);
|
|
return;
|
|
}
|
|
|
|
ast_str_set(&http_headers, 0,
|
|
"WWW-authenticate: Digest algorithm=MD5, realm=\"%s\", nonce=\"%08lx\", qop=\"auth\", opaque=\"%08lx\"%s\r\n"
|
|
"Content-type: text/html",
|
|
realm ? realm : "Asterisk",
|
|
nonce,
|
|
opaque,
|
|
stale ? ", stale=true" : "");
|
|
|
|
ast_str_set(&out, 0,
|
|
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
|
|
"<html><head>\r\n"
|
|
"<title>401 Unauthorized</title>\r\n"
|
|
"</head><body>\r\n"
|
|
"<h1>401 Unauthorized</h1>\r\n"
|
|
"<p>%s</p>\r\n"
|
|
"<hr />\r\n"
|
|
"<address>Asterisk Server</address>\r\n"
|
|
"</body></html>\r\n",
|
|
text ? text : "");
|
|
|
|
ast_http_send(ser, AST_HTTP_UNKNOWN, 401, "Unauthorized", http_headers, out, 0, 0);
|
|
return;
|
|
}
|
|
|
|
/* send http error responce and close socket*/
|
|
void ast_http_error(struct ast_tcptls_session_instance *ser, int status_code, const char *status_title, const char *text)
|
|
{
|
|
struct ast_str *http_headers = ast_str_create(40);
|
|
struct ast_str *out = ast_str_create(256);
|
|
|
|
if (!http_headers || !out) {
|
|
ast_free(http_headers);
|
|
ast_free(out);
|
|
return;
|
|
}
|
|
|
|
ast_str_set(&http_headers, 0, "Content-type: text/html");
|
|
|
|
ast_str_set(&out, 0,
|
|
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
|
|
"<html><head>\r\n"
|
|
"<title>%d %s</title>\r\n"
|
|
"</head><body>\r\n"
|
|
"<h1>%s</h1>\r\n"
|
|
"<p>%s</p>\r\n"
|
|
"<hr />\r\n"
|
|
"<address>Asterisk Server</address>\r\n"
|
|
"</body></html>\r\n",
|
|
status_code, status_title, status_title, text);
|
|
|
|
ast_http_send(ser, AST_HTTP_UNKNOWN, status_code, status_title, http_headers, out, 0, 0);
|
|
return;
|
|
}
|
|
|
|
/*! \brief
|
|
* Link the new uri into the list.
|
|
*
|
|
* They are sorted by length of
|
|
* the string, not alphabetically. Duplicate entries are not replaced,
|
|
* but the insertion order (using <= and not just <) makes sure that
|
|
* more recent insertions hide older ones.
|
|
* On a lookup, we just scan the list and stop at the first matching entry.
|
|
*/
|
|
int ast_http_uri_link(struct ast_http_uri *urih)
|
|
{
|
|
struct ast_http_uri *uri;
|
|
int len = strlen(urih->uri);
|
|
|
|
AST_RWLIST_WRLOCK(&uris);
|
|
|
|
if ( AST_RWLIST_EMPTY(&uris) || strlen(AST_RWLIST_FIRST(&uris)->uri) <= len ) {
|
|
AST_RWLIST_INSERT_HEAD(&uris, urih, entry);
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
return 0;
|
|
}
|
|
|
|
AST_RWLIST_TRAVERSE(&uris, uri, entry) {
|
|
if (AST_RWLIST_NEXT(uri, entry) &&
|
|
strlen(AST_RWLIST_NEXT(uri, entry)->uri) <= len) {
|
|
AST_RWLIST_INSERT_AFTER(&uris, uri, urih, entry);
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
AST_RWLIST_INSERT_TAIL(&uris, urih, entry);
|
|
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ast_http_uri_unlink(struct ast_http_uri *urih)
|
|
{
|
|
AST_RWLIST_WRLOCK(&uris);
|
|
AST_RWLIST_REMOVE(&uris, urih, entry);
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
}
|
|
|
|
void ast_http_uri_unlink_all_with_key(const char *key)
|
|
{
|
|
struct ast_http_uri *urih;
|
|
AST_RWLIST_WRLOCK(&uris);
|
|
AST_RWLIST_TRAVERSE_SAFE_BEGIN(&uris, urih, entry) {
|
|
if (!strcmp(urih->key, key)) {
|
|
AST_RWLIST_REMOVE_CURRENT(entry);
|
|
}
|
|
if (urih->dmallocd) {
|
|
ast_free(urih->data);
|
|
}
|
|
if (urih->mallocd) {
|
|
ast_free(urih);
|
|
}
|
|
}
|
|
AST_RWLIST_TRAVERSE_SAFE_END;
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
}
|
|
|
|
/*
|
|
* Decode special characters in http uri.
|
|
* We have ast_uri_decode to handle %XX sequences, but spaces
|
|
* are encoded as a '+' so we need to replace them beforehand.
|
|
*/
|
|
static void http_decode(char *s)
|
|
{
|
|
char *t;
|
|
|
|
for (t = s; *t; t++) {
|
|
if (*t == '+') {
|
|
*t = ' ';
|
|
}
|
|
}
|
|
|
|
ast_uri_decode(s);
|
|
}
|
|
|
|
/*
|
|
* get post variables from client Request Entity-Body, if content type is
|
|
* application/x-www-form-urlencoded
|
|
*/
|
|
struct ast_variable *ast_http_get_post_vars(
|
|
struct ast_tcptls_session_instance *ser, struct ast_variable *headers)
|
|
{
|
|
int content_length = 0;
|
|
struct ast_variable *v, *post_vars=NULL, *prev = NULL;
|
|
char *buf, *var, *val;
|
|
|
|
for (v = headers; v; v = v->next) {
|
|
if (!strcasecmp(v->name, "Content-Type")) {
|
|
if (strcasecmp(v->value, "application/x-www-form-urlencoded")) {
|
|
return NULL;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (v = headers; v; v = v->next) {
|
|
if (!strcasecmp(v->name, "Content-Length")) {
|
|
content_length = atoi(v->value) + 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!content_length) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!(buf = alloca(content_length))) {
|
|
return NULL;
|
|
}
|
|
if (!fgets(buf, content_length, ser->f)) {
|
|
return NULL;
|
|
}
|
|
|
|
while ((val = strsep(&buf, "&"))) {
|
|
var = strsep(&val, "=");
|
|
if (val) {
|
|
http_decode(val);
|
|
} else {
|
|
val = "";
|
|
}
|
|
http_decode(var);
|
|
if ((v = ast_variable_new(var, val, ""))) {
|
|
if (post_vars) {
|
|
prev->next = v;
|
|
} else {
|
|
post_vars = v;
|
|
}
|
|
prev = v;
|
|
}
|
|
}
|
|
return post_vars;
|
|
}
|
|
|
|
static int handle_uri(struct ast_tcptls_session_instance *ser, char *uri,
|
|
enum ast_http_method method, struct ast_variable *headers)
|
|
{
|
|
char *c;
|
|
int res = -1;
|
|
char *params = uri;
|
|
struct ast_http_uri *urih = NULL;
|
|
int l;
|
|
struct ast_variable *get_vars = NULL, *v, *prev = NULL;
|
|
struct http_uri_redirect *redirect;
|
|
|
|
strsep(¶ms, "?");
|
|
/* Extract arguments from the request and store them in variables. */
|
|
if (params) {
|
|
char *var, *val;
|
|
|
|
while ((val = strsep(¶ms, "&"))) {
|
|
var = strsep(&val, "=");
|
|
if (val) {
|
|
http_decode(val);
|
|
} else {
|
|
val = "";
|
|
}
|
|
http_decode(var);
|
|
if ((v = ast_variable_new(var, val, ""))) {
|
|
if (get_vars) {
|
|
prev->next = v;
|
|
} else {
|
|
get_vars = v;
|
|
}
|
|
prev = v;
|
|
}
|
|
}
|
|
}
|
|
http_decode(uri);
|
|
|
|
AST_RWLIST_RDLOCK(&uri_redirects);
|
|
AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry) {
|
|
if (!strcasecmp(uri, redirect->target)) {
|
|
struct ast_str *http_header = ast_str_create(128);
|
|
ast_str_set(&http_header, 0, "Location: %s\r\n", redirect->dest);
|
|
ast_http_send(ser, method, 302, "Moved Temporarily", http_header, NULL, 0, 0);
|
|
|
|
break;
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
if (redirect) {
|
|
goto cleanup;
|
|
}
|
|
|
|
/* We want requests to start with the (optional) prefix and '/' */
|
|
l = strlen(prefix);
|
|
if (!strncasecmp(uri, prefix, l) && uri[l] == '/') {
|
|
uri += l + 1;
|
|
/* scan registered uris to see if we match one. */
|
|
AST_RWLIST_RDLOCK(&uris);
|
|
AST_RWLIST_TRAVERSE(&uris, urih, entry) {
|
|
ast_debug(2, "match request [%s] with handler [%s] len %d\n", uri, urih->uri, l);
|
|
l = strlen(urih->uri);
|
|
c = uri + l; /* candidate */
|
|
if (strncasecmp(urih->uri, uri, l) /* no match */
|
|
|| (*c && *c != '/')) { /* substring */
|
|
continue;
|
|
}
|
|
if (*c == '/') {
|
|
c++;
|
|
}
|
|
if (!*c || urih->has_subtree) {
|
|
uri = c;
|
|
break;
|
|
}
|
|
}
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
}
|
|
if (urih) {
|
|
res = urih->callback(ser, urih, uri, method, get_vars, headers);
|
|
} else {
|
|
ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
|
|
}
|
|
|
|
cleanup:
|
|
ast_variables_destroy(get_vars);
|
|
return res;
|
|
}
|
|
|
|
#ifdef DO_SSL
|
|
#if defined(HAVE_FUNOPEN)
|
|
#define HOOK_T int
|
|
#define LEN_T int
|
|
#else
|
|
#define HOOK_T ssize_t
|
|
#define LEN_T size_t
|
|
#endif
|
|
|
|
/*!
|
|
* replacement read/write functions for SSL support.
|
|
* We use wrappers rather than SSL_read/SSL_write directly so
|
|
* we can put in some debugging.
|
|
*/
|
|
/*static HOOK_T ssl_read(void *cookie, char *buf, LEN_T len)
|
|
{
|
|
int i = SSL_read(cookie, buf, len-1);
|
|
#if 0
|
|
if (i >= 0)
|
|
buf[i] = '\0';
|
|
ast_verbose("ssl read size %d returns %d <%s>\n", (int)len, i, buf);
|
|
#endif
|
|
return i;
|
|
}
|
|
|
|
static HOOK_T ssl_write(void *cookie, const char *buf, LEN_T len)
|
|
{
|
|
#if 0
|
|
char *s = alloca(len+1);
|
|
strncpy(s, buf, len);
|
|
s[len] = '\0';
|
|
ast_verbose("ssl write size %d <%s>\n", (int)len, s);
|
|
#endif
|
|
return SSL_write(cookie, buf, len);
|
|
}
|
|
|
|
static int ssl_close(void *cookie)
|
|
{
|
|
close(SSL_get_fd(cookie));
|
|
SSL_shutdown(cookie);
|
|
SSL_free(cookie);
|
|
return 0;
|
|
}*/
|
|
#endif /* DO_SSL */
|
|
|
|
static struct ast_variable *parse_cookies(char *cookies)
|
|
{
|
|
char *cur;
|
|
struct ast_variable *vars = NULL, *var;
|
|
|
|
while ((cur = strsep(&cookies, ";"))) {
|
|
char *name, *val;
|
|
|
|
name = val = cur;
|
|
strsep(&val, "=");
|
|
|
|
if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
|
|
continue;
|
|
}
|
|
|
|
name = ast_strip(name);
|
|
val = ast_strip_quoted(val, "\"", "\"");
|
|
|
|
if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
|
|
continue;
|
|
}
|
|
|
|
if (option_debug) {
|
|
ast_log(LOG_DEBUG, "mmm ... cookie! Name: '%s' Value: '%s'\n", name, val);
|
|
}
|
|
|
|
var = ast_variable_new(name, val, __FILE__);
|
|
var->next = vars;
|
|
vars = var;
|
|
}
|
|
|
|
return vars;
|
|
}
|
|
|
|
/* get cookie from Request headers */
|
|
struct ast_variable *ast_http_get_cookies(struct ast_variable *headers)
|
|
{
|
|
struct ast_variable *v, *cookies=NULL;
|
|
|
|
for (v = headers; v; v = v->next) {
|
|
if (!strncasecmp(v->name, "Cookie", 6)) {
|
|
if (cookies) {
|
|
ast_variables_destroy(cookies);
|
|
}
|
|
|
|
cookies = parse_cookies((char *)v->value);
|
|
}
|
|
}
|
|
return cookies;
|
|
}
|
|
|
|
|
|
static void *httpd_helper_thread(void *data)
|
|
{
|
|
char buf[4096];
|
|
char header_line[4096];
|
|
struct ast_tcptls_session_instance *ser = data;
|
|
struct ast_variable *headers = NULL;
|
|
struct ast_variable *tail = headers;
|
|
char *uri, *method;
|
|
enum ast_http_method http_method = AST_HTTP_UNKNOWN;
|
|
|
|
if (!fgets(buf, sizeof(buf), ser->f)) {
|
|
goto done;
|
|
}
|
|
|
|
/* Get method */
|
|
method = ast_skip_blanks(buf);
|
|
uri = ast_skip_nonblanks(method);
|
|
if (*uri) {
|
|
*uri++ = '\0';
|
|
}
|
|
|
|
if (!strcasecmp(method,"GET")) {
|
|
http_method = AST_HTTP_GET;
|
|
} else if (!strcasecmp(method,"POST")) {
|
|
http_method = AST_HTTP_POST;
|
|
} else if (!strcasecmp(method,"HEAD")) {
|
|
http_method = AST_HTTP_HEAD;
|
|
} else if (!strcasecmp(method,"PUT")) {
|
|
http_method = AST_HTTP_PUT;
|
|
}
|
|
|
|
uri = ast_skip_blanks(uri); /* Skip white space */
|
|
|
|
if (*uri) { /* terminate at the first blank */
|
|
char *c = ast_skip_nonblanks(uri);
|
|
|
|
if (*c) {
|
|
*c = '\0';
|
|
}
|
|
}
|
|
|
|
/* process "Request Headers" lines */
|
|
while (fgets(header_line, sizeof(header_line), ser->f)) {
|
|
char *name, *value;
|
|
|
|
/* Trim trailing characters */
|
|
ast_trim_blanks(header_line);
|
|
if (ast_strlen_zero(header_line)) {
|
|
break;
|
|
}
|
|
|
|
value = header_line;
|
|
name = strsep(&value, ":");
|
|
if (!value) {
|
|
continue;
|
|
}
|
|
|
|
value = ast_skip_blanks(value);
|
|
if (ast_strlen_zero(value) || ast_strlen_zero(name)) {
|
|
continue;
|
|
}
|
|
|
|
ast_trim_blanks(name);
|
|
|
|
if (!headers) {
|
|
headers = ast_variable_new(name, value, __FILE__);
|
|
tail = headers;
|
|
} else {
|
|
tail->next = ast_variable_new(name, value, __FILE__);
|
|
tail = tail->next;
|
|
}
|
|
}
|
|
|
|
if (!*uri) {
|
|
ast_http_error(ser, 400, "Bad Request", "Invalid Request");
|
|
return NULL;
|
|
}
|
|
|
|
handle_uri(ser, uri, http_method, headers);
|
|
|
|
/* Clean up all the header information pulled as well */
|
|
if (headers) {
|
|
ast_variables_destroy(headers);
|
|
}
|
|
|
|
done:
|
|
if (ser->f) {
|
|
fclose(ser->f);
|
|
}
|
|
ao2_ref(ser, -1);
|
|
ser = NULL;
|
|
return NULL;
|
|
}
|
|
|
|
/*!
|
|
* \brief Add a new URI redirect
|
|
* The entries in the redirect list are sorted by length, just like the list
|
|
* of URI handlers.
|
|
*/
|
|
static void add_redirect(const char *value)
|
|
{
|
|
char *target, *dest;
|
|
struct http_uri_redirect *redirect, *cur;
|
|
unsigned int target_len;
|
|
unsigned int total_len;
|
|
|
|
dest = ast_strdupa(value);
|
|
dest = ast_skip_blanks(dest);
|
|
target = strsep(&dest, " ");
|
|
target = ast_skip_blanks(target);
|
|
target = strsep(&target, " "); /* trim trailing whitespace */
|
|
|
|
if (!dest) {
|
|
ast_log(LOG_WARNING, "Invalid redirect '%s'\n", value);
|
|
return;
|
|
}
|
|
|
|
target_len = strlen(target) + 1;
|
|
total_len = sizeof(*redirect) + target_len + strlen(dest) + 1;
|
|
|
|
if (!(redirect = ast_calloc(1, total_len))) {
|
|
return;
|
|
}
|
|
redirect->dest = redirect->target + target_len;
|
|
strcpy(redirect->target, target);
|
|
strcpy(redirect->dest, dest);
|
|
|
|
AST_RWLIST_WRLOCK(&uri_redirects);
|
|
|
|
target_len--; /* So we can compare directly with strlen() */
|
|
if (AST_RWLIST_EMPTY(&uri_redirects)
|
|
|| strlen(AST_RWLIST_FIRST(&uri_redirects)->target) <= target_len ) {
|
|
AST_RWLIST_INSERT_HEAD(&uri_redirects, redirect, entry);
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
|
|
return;
|
|
}
|
|
|
|
AST_RWLIST_TRAVERSE(&uri_redirects, cur, entry) {
|
|
if (AST_RWLIST_NEXT(cur, entry)
|
|
&& strlen(AST_RWLIST_NEXT(cur, entry)->target) <= target_len ) {
|
|
AST_RWLIST_INSERT_AFTER(&uri_redirects, cur, redirect, entry);
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
return;
|
|
}
|
|
}
|
|
|
|
AST_RWLIST_INSERT_TAIL(&uri_redirects, redirect, entry);
|
|
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
}
|
|
|
|
static int __ast_http_load(int reload)
|
|
{
|
|
struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
int enabled=0;
|
|
int newenablestatic=0;
|
|
struct hostent *hp;
|
|
struct ast_hostent ahp;
|
|
char newprefix[MAX_PREFIX] = "";
|
|
struct http_uri_redirect *redirect;
|
|
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
|
|
|
|
cfg = ast_config_load2("http.conf", "http", config_flags);
|
|
if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
|
|
return 0;
|
|
}
|
|
|
|
/* default values */
|
|
memset(&http_desc.local_address, 0, sizeof(http_desc.local_address));
|
|
http_desc.local_address.sin_port = htons(8088);
|
|
|
|
memset(&https_desc.local_address, 0, sizeof(https_desc.local_address));
|
|
https_desc.local_address.sin_port = htons(8089);
|
|
|
|
http_tls_cfg.enabled = 0;
|
|
if (http_tls_cfg.certfile) {
|
|
ast_free(http_tls_cfg.certfile);
|
|
}
|
|
http_tls_cfg.certfile = ast_strdup(AST_CERTFILE);
|
|
|
|
if (http_tls_cfg.pvtfile) {
|
|
ast_free(http_tls_cfg.pvtfile);
|
|
}
|
|
http_tls_cfg.pvtfile = ast_strdup("");
|
|
|
|
if (http_tls_cfg.cipher) {
|
|
ast_free(http_tls_cfg.cipher);
|
|
}
|
|
http_tls_cfg.cipher = ast_strdup("");
|
|
|
|
AST_RWLIST_WRLOCK(&uri_redirects);
|
|
while ((redirect = AST_RWLIST_REMOVE_HEAD(&uri_redirects, entry))) {
|
|
ast_free(redirect);
|
|
}
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
|
|
if (cfg) {
|
|
v = ast_variable_browse(cfg, "general");
|
|
for (; v; v = v->next) {
|
|
|
|
/* handle tls conf */
|
|
if (!ast_tls_read_conf(&http_tls_cfg, &https_desc, v->name, v->value)) {
|
|
continue;
|
|
}
|
|
|
|
if (!strcasecmp(v->name, "enabled")) {
|
|
enabled = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "enablestatic")) {
|
|
newenablestatic = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "bindport")) {
|
|
http_desc.local_address.sin_port = htons(atoi(v->value));
|
|
} else if (!strcasecmp(v->name, "bindaddr")) {
|
|
if ((hp = ast_gethostbyname(v->value, &ahp))) {
|
|
memcpy(&http_desc.local_address.sin_addr, hp->h_addr, sizeof(http_desc.local_address.sin_addr));
|
|
} else {
|
|
ast_log(LOG_WARNING, "Invalid bind address '%s'\n", v->value);
|
|
}
|
|
} else if (!strcasecmp(v->name, "prefix")) {
|
|
if (!ast_strlen_zero(v->value)) {
|
|
newprefix[0] = '/';
|
|
ast_copy_string(newprefix + 1, v->value, sizeof(newprefix) - 1);
|
|
} else {
|
|
newprefix[0] = '\0';
|
|
}
|
|
} else if (!strcasecmp(v->name, "redirect")) {
|
|
add_redirect(v->value);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Ignoring unknown option '%s' in http.conf\n", v->name);
|
|
}
|
|
}
|
|
|
|
ast_config_destroy(cfg);
|
|
}
|
|
/* if the https addres has not been set, default is the same as non secure http */
|
|
if (!https_desc.local_address.sin_addr.s_addr) {
|
|
https_desc.local_address.sin_addr = http_desc.local_address.sin_addr;
|
|
}
|
|
if (enabled) {
|
|
http_desc.local_address.sin_family = https_desc.local_address.sin_family = AF_INET;
|
|
}
|
|
if (strcmp(prefix, newprefix)) {
|
|
ast_copy_string(prefix, newprefix, sizeof(prefix));
|
|
}
|
|
enablestatic = newenablestatic;
|
|
ast_tcptls_server_start(&http_desc);
|
|
if (ast_ssl_setup(https_desc.tls_cfg)) {
|
|
ast_tcptls_server_start(&https_desc);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static char *handle_show_http(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
struct ast_http_uri *urih;
|
|
struct http_uri_redirect *redirect;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "http show status";
|
|
e->usage =
|
|
"Usage: http show status\n"
|
|
" Lists status of internal HTTP engine\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
|
|
if (a->argc != 3) {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
ast_cli(a->fd, "HTTP Server Status:\n");
|
|
ast_cli(a->fd, "Prefix: %s\n", prefix);
|
|
if (!http_desc.old_address.sin_family) {
|
|
ast_cli(a->fd, "Server Disabled\n\n");
|
|
} else {
|
|
ast_cli(a->fd, "Server Enabled and Bound to %s:%d\n\n",
|
|
ast_inet_ntoa(http_desc.old_address.sin_addr),
|
|
ntohs(http_desc.old_address.sin_port));
|
|
if (http_tls_cfg.enabled) {
|
|
ast_cli(a->fd, "HTTPS Server Enabled and Bound to %s:%d\n\n",
|
|
ast_inet_ntoa(https_desc.old_address.sin_addr),
|
|
ntohs(https_desc.old_address.sin_port));
|
|
}
|
|
}
|
|
|
|
ast_cli(a->fd, "Enabled URI's:\n");
|
|
AST_RWLIST_RDLOCK(&uris);
|
|
if (AST_RWLIST_EMPTY(&uris)) {
|
|
ast_cli(a->fd, "None.\n");
|
|
} else {
|
|
AST_RWLIST_TRAVERSE(&uris, urih, entry)
|
|
ast_cli(a->fd, "%s/%s%s => %s\n", prefix, urih->uri, (urih->has_subtree ? "/..." : "" ), urih->description);
|
|
}
|
|
AST_RWLIST_UNLOCK(&uris);
|
|
|
|
ast_cli(a->fd, "\nEnabled Redirects:\n");
|
|
AST_RWLIST_RDLOCK(&uri_redirects);
|
|
AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry)
|
|
ast_cli(a->fd, " %s => %s\n", redirect->target, redirect->dest);
|
|
if (AST_RWLIST_EMPTY(&uri_redirects)) {
|
|
ast_cli(a->fd, " None.\n");
|
|
}
|
|
AST_RWLIST_UNLOCK(&uri_redirects);
|
|
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
int ast_http_reload(void)
|
|
{
|
|
return __ast_http_load(1);
|
|
}
|
|
|
|
static struct ast_cli_entry cli_http[] = {
|
|
AST_CLI_DEFINE(handle_show_http, "Display HTTP server status"),
|
|
};
|
|
|
|
int ast_http_init(void)
|
|
{
|
|
ast_http_uri_link(&statusuri);
|
|
ast_http_uri_link(&staticuri);
|
|
ast_cli_register_multiple(cli_http, ARRAY_LEN(cli_http));
|
|
|
|
return __ast_http_load(0);
|
|
}
|