[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * httpd implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2002,2003 Glenn Engel <glenne@engel.org>
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| 6 | * Copyright (C) 2003-2006 Vladimir Oleynik <dzo@simtreas.ru>
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| 7 | *
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| 8 | * simplify patch stolen from libbb without using strdup
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| 9 | *
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| 10 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 11 | *
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| 12 | *****************************************************************************
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| 13 | *
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| 14 | * Typical usage:
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| 15 | * for non root user
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| 16 | * httpd -p 8080 -h $HOME/public_html
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| 17 | * or for daemon start from rc script with uid=0:
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| 18 | * httpd -u www
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| 19 | * This is equivalent if www user have uid=80 to
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| 20 | * httpd -p 80 -u 80 -h /www -c /etc/httpd.conf -r "Web Server Authentication"
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| 21 | *
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| 22 | *
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| 23 | * When a url contains "cgi-bin" it is assumed to be a cgi script. The
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| 24 | * server changes directory to the location of the script and executes it
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| 25 | * after setting QUERY_STRING and other environment variables.
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| 26 | *
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| 27 | * The server can also be invoked as a url arg decoder and html text encoder
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| 28 | * as follows:
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| 29 | * foo=`httpd -d $foo` # decode "Hello%20World" as "Hello World"
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| 30 | * bar=`httpd -e "<Hello World>"` # encode as "<Hello World>"
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| 31 | * Note that url encoding for arguments is not the same as html encoding for
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| 32 | * presentation. -d decodes a url-encoded argument while -e encodes in html
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| 33 | * for page display.
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| 34 | *
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| 35 | * httpd.conf has the following format:
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| 36 | *
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| 37 | * A:172.20. # Allow address from 172.20.0.0/16
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| 38 | * A:10.0.0.0/25 # Allow any address from 10.0.0.0-10.0.0.127
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| 39 | * A:10.0.0.0/255.255.255.128 # Allow any address that previous set
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| 40 | * A:127.0.0.1 # Allow local loopback connections
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| 41 | * D:* # Deny from other IP connections
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| 42 | * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
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| 43 | * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
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| 44 | * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
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| 45 | * .au:audio/basic # additional mime type for audio.au files
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| 46 | * *.php:/path/php # running cgi.php scripts through an interpreter
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| 47 | *
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| 48 | * A/D may be as a/d or allow/deny - first char case insensitive
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| 49 | * Deny IP rules take precedence over allow rules.
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| 50 | *
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| 51 | *
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| 52 | * The Deny/Allow IP logic:
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| 53 | *
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| 54 | * - Default is to allow all. No addresses are denied unless
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| 55 | * denied with a D: rule.
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| 56 | * - Order of Deny/Allow rules is significant
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| 57 | * - Deny rules take precedence over allow rules.
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| 58 | * - If a deny all rule (D:*) is used it acts as a catch-all for unmatched
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| 59 | * addresses.
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| 60 | * - Specification of Allow all (A:*) is a no-op
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| 61 | *
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| 62 | * Example:
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| 63 | * 1. Allow only specified addresses
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| 64 | * A:172.20 # Allow any address that begins with 172.20.
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| 65 | * A:10.10. # Allow any address that begins with 10.10.
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| 66 | * A:127.0.0.1 # Allow local loopback connections
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| 67 | * D:* # Deny from other IP connections
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| 68 | *
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| 69 | * 2. Only deny specified addresses
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| 70 | * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
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| 71 | * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
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| 72 | * A:* # (optional line added for clarity)
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| 73 | *
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| 74 | * If a sub directory contains a config file it is parsed and merged with
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| 75 | * any existing settings as if it was appended to the original configuration.
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| 76 | *
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| 77 | * subdir paths are relative to the containing subdir and thus cannot
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| 78 | * affect the parent rules.
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| 79 | *
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| 80 | * Note that since the sub dir is parsed in the forked thread servicing the
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| 81 | * subdir http request, any merge is discarded when the process exits. As a
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| 82 | * result, the subdir settings only have a lifetime of a single request.
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| 83 | *
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| 84 | *
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| 85 | * If -c is not set, an attempt will be made to open the default
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| 86 | * root configuration file. If -c is set and the file is not found, the
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| 87 | * server exits with an error.
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| 88 | *
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| 89 | */
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| 90 |
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| 91 |
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| 92 | #include <stdio.h>
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| 93 | #include <ctype.h> /* for isspace */
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| 94 | #include <string.h>
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| 95 | #include <stdlib.h> /* for malloc */
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| 96 | #include <time.h>
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| 97 | #include <unistd.h> /* for close */
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| 98 | #include <signal.h>
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| 99 | #include <sys/types.h>
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| 100 | #include <sys/socket.h> /* for connect and socket*/
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| 101 | #include <netinet/in.h> /* for sockaddr_in */
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| 102 | #include <sys/stat.h>
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| 103 | #include <sys/wait.h>
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| 104 | #include <fcntl.h> /* for open modes */
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| 105 | #include "busybox.h"
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| 106 |
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| 107 |
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| 108 | static const char httpdVersion[] = "busybox httpd/1.35 6-Oct-2004";
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| 109 | static const char default_path_httpd_conf[] = "/etc";
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| 110 | static const char httpd_conf[] = "httpd.conf";
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| 111 | static const char home[] = "./";
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| 112 |
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| 113 | #ifdef CONFIG_LFS
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| 114 | # define cont_l_fmt "%lld"
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| 115 | # define cont_l_type (long long)
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| 116 | #else
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| 117 | # define cont_l_fmt "%ld"
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| 118 | # define cont_l_type (long)
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| 119 | #endif
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| 120 |
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| 121 | #define TIMEOUT 60
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| 122 |
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| 123 | // Note: busybox xfuncs are not used because we want the server to keep running
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| 124 | // if something bad happens due to a malformed user request.
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| 125 | // As a result, all memory allocation after daemonize
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| 126 | // is checked rigorously
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| 127 |
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| 128 | //#define DEBUG 1
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| 129 |
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| 130 | #ifndef DEBUG
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| 131 | # define DEBUG 0
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| 132 | #endif
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| 133 |
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| 134 | #define MAX_MEMORY_BUFF 8192 /* IO buffer */
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| 135 |
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| 136 | typedef struct HT_ACCESS {
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| 137 | char *after_colon;
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| 138 | struct HT_ACCESS *next;
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| 139 | char before_colon[1]; /* really bigger, must last */
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| 140 | } Htaccess;
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| 141 |
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| 142 | typedef struct HT_ACCESS_IP {
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| 143 | unsigned int ip;
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| 144 | unsigned int mask;
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| 145 | int allow_deny;
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| 146 | struct HT_ACCESS_IP *next;
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| 147 | } Htaccess_IP;
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| 148 |
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| 149 | typedef struct
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| 150 | {
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| 151 | char buf[MAX_MEMORY_BUFF];
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| 152 |
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| 153 | USE_FEATURE_HTTPD_BASIC_AUTH(const char *realm;)
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| 154 | USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
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| 155 |
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| 156 | const char *query;
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| 157 |
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| 158 | USE_FEATURE_HTTPD_CGI(char *referer;)
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| 159 |
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| 160 | const char *configFile;
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| 161 |
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| 162 | unsigned int rmt_ip;
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| 163 | #if defined(CONFIG_FEATURE_HTTPD_CGI) || DEBUG
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| 164 | char rmt_ip_str[16]; /* for set env REMOTE_ADDR */
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| 165 | #endif
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| 166 | unsigned port; /* server initial port and for
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| 167 | set env REMOTE_PORT */
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| 168 | union HTTPD_FOUND {
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| 169 | const char *found_mime_type;
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| 170 | const char *found_moved_temporarily;
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| 171 | } httpd_found;
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| 172 |
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| 173 | off_t ContentLength; /* -1 - unknown */
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| 174 | time_t last_mod;
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| 175 |
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| 176 | Htaccess_IP *ip_a_d; /* config allow/deny lines */
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| 177 | int flg_deny_all;
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| 178 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
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| 179 | Htaccess *auth; /* config user:password lines */
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| 180 | #endif
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| 181 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
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| 182 | Htaccess *mime_a; /* config mime types */
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| 183 | #endif
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| 184 |
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| 185 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
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| 186 | int accepted_socket;
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| 187 | # define a_c_r config->accepted_socket
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| 188 | # define a_c_w config->accepted_socket
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| 189 | #else
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| 190 | # define a_c_r 0
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| 191 | # define a_c_w 1
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| 192 | #endif
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| 193 | volatile int alarm_signaled;
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| 194 |
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| 195 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
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| 196 | Htaccess *script_i; /* config script interpreters */
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| 197 | #endif
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| 198 | } HttpdConfig;
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| 199 |
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| 200 | static HttpdConfig *config;
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| 201 |
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| 202 | static const char request_GET[] = "GET"; /* size algorithmic optimize */
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| 203 |
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| 204 | static const char* const suffixTable [] = {
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| 205 | /* Warning: shorted equivalent suffix in one line must be first */
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| 206 | ".htm.html", "text/html",
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| 207 | ".jpg.jpeg", "image/jpeg",
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| 208 | ".gif", "image/gif",
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| 209 | ".png", "image/png",
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| 210 | ".txt.h.c.cc.cpp", "text/plain",
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| 211 | ".css", "text/css",
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| 212 | ".wav", "audio/wav",
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| 213 | ".avi", "video/x-msvideo",
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| 214 | ".qt.mov", "video/quicktime",
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| 215 | ".mpe.mpeg", "video/mpeg",
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| 216 | ".mid.midi", "audio/midi",
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| 217 | ".mp3", "audio/mpeg",
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| 218 | #if 0 /* unpopular */
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| 219 | ".au", "audio/basic",
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| 220 | ".pac", "application/x-ns-proxy-autoconfig",
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| 221 | ".vrml.wrl", "model/vrml",
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| 222 | #endif
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| 223 | 0, "application/octet-stream" /* default */
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| 224 | };
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| 225 |
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| 226 | typedef enum
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| 227 | {
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| 228 | HTTP_OK = 200,
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| 229 | HTTP_MOVED_TEMPORARILY = 302,
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| 230 | HTTP_BAD_REQUEST = 400, /* malformed syntax */
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| 231 | HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
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| 232 | HTTP_NOT_FOUND = 404,
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| 233 | HTTP_FORBIDDEN = 403,
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| 234 | HTTP_REQUEST_TIMEOUT = 408,
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| 235 | HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
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| 236 | HTTP_INTERNAL_SERVER_ERROR = 500,
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| 237 | #if 0 /* future use */
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| 238 | HTTP_CONTINUE = 100,
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| 239 | HTTP_SWITCHING_PROTOCOLS = 101,
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| 240 | HTTP_CREATED = 201,
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| 241 | HTTP_ACCEPTED = 202,
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| 242 | HTTP_NON_AUTHORITATIVE_INFO = 203,
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| 243 | HTTP_NO_CONTENT = 204,
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| 244 | HTTP_MULTIPLE_CHOICES = 300,
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| 245 | HTTP_MOVED_PERMANENTLY = 301,
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| 246 | HTTP_NOT_MODIFIED = 304,
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| 247 | HTTP_PAYMENT_REQUIRED = 402,
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| 248 | HTTP_BAD_GATEWAY = 502,
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| 249 | HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
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| 250 | HTTP_RESPONSE_SETSIZE=0xffffffff
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| 251 | #endif
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| 252 | } HttpResponseNum;
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| 253 |
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| 254 | typedef struct
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| 255 | {
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| 256 | HttpResponseNum type;
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| 257 | const char *name;
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| 258 | const char *info;
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| 259 | } HttpEnumString;
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| 260 |
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| 261 | static const HttpEnumString httpResponseNames[] = {
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| 262 | { HTTP_OK, "OK", NULL },
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| 263 | { HTTP_MOVED_TEMPORARILY, "Found", "Directories must end with a slash." },
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| 264 | { HTTP_REQUEST_TIMEOUT, "Request Timeout",
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| 265 | "No request appeared within a reasonable time period." },
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| 266 | { HTTP_NOT_IMPLEMENTED, "Not Implemented",
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| 267 | "The requested method is not recognized by this server." },
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| 268 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
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| 269 | { HTTP_UNAUTHORIZED, "Unauthorized", "" },
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| 270 | #endif
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| 271 | { HTTP_NOT_FOUND, "Not Found",
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| 272 | "The requested URL was not found on this server." },
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| 273 | { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
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| 274 | { HTTP_FORBIDDEN, "Forbidden", "" },
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| 275 | { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
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| 276 | "Internal Server Error" },
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| 277 | #if 0 /* not implemented */
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| 278 | { HTTP_CREATED, "Created" },
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| 279 | { HTTP_ACCEPTED, "Accepted" },
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| 280 | { HTTP_NO_CONTENT, "No Content" },
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| 281 | { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
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| 282 | { HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
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| 283 | { HTTP_NOT_MODIFIED, "Not Modified" },
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| 284 | { HTTP_BAD_GATEWAY, "Bad Gateway", "" },
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| 285 | { HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
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| 286 | #endif
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| 287 | };
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| 288 |
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| 289 |
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| 290 | static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
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| 291 | static const char Content_length[] = "Content-length:";
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| 292 |
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| 293 |
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| 294 | static int
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| 295 | scan_ip (const char **ep, unsigned int *ip, unsigned char endc)
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| 296 | {
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| 297 | const char *p = *ep;
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| 298 | int auto_mask = 8;
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| 299 | int j;
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| 300 |
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| 301 | *ip = 0;
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| 302 | for (j = 0; j < 4; j++) {
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| 303 | unsigned int octet;
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| 304 |
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| 305 | if ((*p < '0' || *p > '9') && (*p != '/' || j == 0) && *p != 0)
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| 306 | return -auto_mask;
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| 307 | octet = 0;
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| 308 | while (*p >= '0' && *p <= '9') {
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| 309 | octet *= 10;
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| 310 | octet += *p - '0';
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| 311 | if (octet > 255)
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| 312 | return -auto_mask;
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| 313 | p++;
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| 314 | }
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| 315 | if (*p == '.')
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| 316 | p++;
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| 317 | if (*p != '/' && *p != 0)
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| 318 | auto_mask += 8;
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| 319 | *ip = ((*ip) << 8) | octet;
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| 320 | }
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| 321 | if (*p != 0) {
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| 322 | if (*p != endc)
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| 323 | return -auto_mask;
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| 324 | p++;
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| 325 | if(*p == 0)
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| 326 | return -auto_mask;
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| 327 | }
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| 328 | *ep = p;
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| 329 | return auto_mask;
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| 330 | }
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| 331 |
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| 332 | static int
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| 333 | scan_ip_mask (const char *ipm, unsigned int *ip, unsigned int *mask)
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| 334 | {
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| 335 | int i;
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| 336 | unsigned int msk;
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| 337 |
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| 338 | i = scan_ip(&ipm, ip, '/');
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| 339 | if(i < 0)
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| 340 | return i;
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| 341 | if(*ipm) {
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| 342 | const char *p = ipm;
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| 343 |
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| 344 | i = 0;
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| 345 | while (*p) {
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| 346 | if (*p < '0' || *p > '9') {
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| 347 | if (*p == '.') {
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| 348 | i = scan_ip (&ipm, mask, 0);
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| 349 | return i != 32;
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| 350 | }
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| 351 | return -1;
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| 352 | }
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| 353 | i *= 10;
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| 354 | i += *p - '0';
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| 355 | p++;
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| 356 | }
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| 357 | }
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| 358 | if (i > 32 || i < 0)
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| 359 | return -1;
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| 360 | msk = 0x80000000;
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| 361 | *mask = 0;
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| 362 | while (i > 0) {
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| 363 | *mask |= msk;
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| 364 | msk >>= 1;
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| 365 | i--;
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| 366 | }
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| 367 | return 0;
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| 368 | }
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| 369 |
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| 370 | #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
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| 371 | static void free_config_lines(Htaccess **pprev)
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| 372 | {
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| 373 | Htaccess *prev = *pprev;
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| 374 |
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| 375 | while( prev ) {
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| 376 | Htaccess *cur = prev;
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| 377 |
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| 378 | prev = cur->next;
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| 379 | free(cur);
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| 380 | }
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| 381 | *pprev = NULL;
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| 382 | }
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| 383 | #endif
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| 384 |
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| 385 | /* flag */
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| 386 | #define FIRST_PARSE 0
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| 387 | #define SUBDIR_PARSE 1
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| 388 | #define SIGNALED_PARSE 2
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| 389 | #define FIND_FROM_HTTPD_ROOT 3
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| 390 | /****************************************************************************
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| 391 | *
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| 392 | > $Function: parse_conf()
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| 393 | *
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| 394 | * $Description: parse configuration file into in-memory linked list.
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| 395 | *
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| 396 | * The first non-white character is examined to determine if the config line
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| 397 | * is one of the following:
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| 398 | * .ext:mime/type # new mime type not compiled into httpd
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| 399 | * [adAD]:from # ip address allow/deny, * for wildcard
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| 400 | * /path:user:pass # username/password
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| 401 | *
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| 402 | * Any previous IP rules are discarded.
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| 403 | * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
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| 404 | * are also discarded. That is, previous settings are retained if flag is
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| 405 | * SUBDIR_PARSE.
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| 406 | *
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| 407 | * $Parameters:
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| 408 | * (const char *) path . . null for ip address checks, path for password
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| 409 | * checks.
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| 410 | * (int) flag . . . . . . the source of the parse request.
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| 411 | *
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| 412 | * $Return: (None)
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| 413 | *
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| 414 | ****************************************************************************/
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| 415 | static void parse_conf(const char *path, int flag)
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| 416 | {
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| 417 | FILE *f;
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| 418 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
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| 419 | Htaccess *prev, *cur;
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| 420 | #elif CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
---|
| 421 | Htaccess *cur;
|
---|
| 422 | #endif
|
---|
| 423 |
|
---|
| 424 | const char *cf = config->configFile;
|
---|
| 425 | char buf[160];
|
---|
| 426 | char *p0 = NULL;
|
---|
| 427 | char *c, *p;
|
---|
| 428 |
|
---|
| 429 | /* free previous ip setup if present */
|
---|
| 430 | Htaccess_IP *pip = config->ip_a_d;
|
---|
| 431 |
|
---|
| 432 | while( pip ) {
|
---|
| 433 | Htaccess_IP *cur_ipl = pip;
|
---|
| 434 |
|
---|
| 435 | pip = cur_ipl->next;
|
---|
| 436 | free(cur_ipl);
|
---|
| 437 | }
|
---|
| 438 | config->ip_a_d = NULL;
|
---|
| 439 |
|
---|
| 440 | config->flg_deny_all = 0;
|
---|
| 441 |
|
---|
| 442 | #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
|
---|
| 443 | /* retain previous auth and mime config only for subdir parse */
|
---|
| 444 | if(flag != SUBDIR_PARSE) {
|
---|
| 445 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 446 | free_config_lines(&config->auth);
|
---|
| 447 | #endif
|
---|
| 448 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
---|
| 449 | free_config_lines(&config->mime_a);
|
---|
| 450 | #endif
|
---|
| 451 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
|
---|
| 452 | free_config_lines(&config->script_i);
|
---|
| 453 | #endif
|
---|
| 454 | }
|
---|
| 455 | #endif
|
---|
| 456 |
|
---|
| 457 | if(flag == SUBDIR_PARSE || cf == NULL) {
|
---|
| 458 | cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
|
---|
| 459 | if(cf == NULL) {
|
---|
| 460 | if(flag == FIRST_PARSE)
|
---|
| 461 | bb_error_msg_and_die(bb_msg_memory_exhausted);
|
---|
| 462 | return;
|
---|
| 463 | }
|
---|
| 464 | sprintf((char *)cf, "%s/%s", path, httpd_conf);
|
---|
| 465 | }
|
---|
| 466 |
|
---|
| 467 | while((f = fopen(cf, "r")) == NULL) {
|
---|
| 468 | if(flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
|
---|
| 469 | /* config file not found, no changes to config */
|
---|
| 470 | return;
|
---|
| 471 | }
|
---|
| 472 | if(config->configFile && flag == FIRST_PARSE) /* if -c option given */
|
---|
| 473 | bb_perror_msg_and_die("%s", cf);
|
---|
| 474 | flag = FIND_FROM_HTTPD_ROOT;
|
---|
| 475 | cf = httpd_conf;
|
---|
| 476 | }
|
---|
| 477 |
|
---|
| 478 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 479 | prev = config->auth;
|
---|
| 480 | #endif
|
---|
| 481 | /* This could stand some work */
|
---|
| 482 | while ( (p0 = fgets(buf, sizeof(buf), f)) != NULL) {
|
---|
| 483 | c = NULL;
|
---|
| 484 | for(p = p0; *p0 != 0 && *p0 != '#'; p0++) {
|
---|
| 485 | if(!isspace(*p0)) {
|
---|
| 486 | *p++ = *p0;
|
---|
| 487 | if(*p0 == ':' && c == NULL)
|
---|
| 488 | c = p;
|
---|
| 489 | }
|
---|
| 490 | }
|
---|
| 491 | *p = 0;
|
---|
| 492 |
|
---|
| 493 | /* test for empty or strange line */
|
---|
| 494 | if (c == NULL || *c == 0)
|
---|
| 495 | continue;
|
---|
| 496 | p0 = buf;
|
---|
| 497 | if(*p0 == 'd')
|
---|
| 498 | *p0 = 'D';
|
---|
| 499 | if(*c == '*') {
|
---|
| 500 | if(*p0 == 'D') {
|
---|
| 501 | /* memorize deny all */
|
---|
| 502 | config->flg_deny_all++;
|
---|
| 503 | }
|
---|
| 504 | /* skip default other "word:*" config lines */
|
---|
| 505 | continue;
|
---|
| 506 | }
|
---|
| 507 |
|
---|
| 508 | if(*p0 == 'a')
|
---|
| 509 | *p0 = 'A';
|
---|
| 510 | else if(*p0 != 'D' && *p0 != 'A'
|
---|
| 511 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 512 | && *p0 != '/'
|
---|
| 513 | #endif
|
---|
| 514 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
---|
| 515 | && *p0 != '.'
|
---|
| 516 | #endif
|
---|
| 517 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
|
---|
| 518 | && *p0 != '*'
|
---|
| 519 | #endif
|
---|
| 520 | )
|
---|
| 521 | continue;
|
---|
| 522 | if(*p0 == 'A' || *p0 == 'D') {
|
---|
| 523 | /* storing current config IP line */
|
---|
| 524 | pip = calloc(1, sizeof(Htaccess_IP));
|
---|
| 525 | if(pip) {
|
---|
| 526 | if(scan_ip_mask (c, &(pip->ip), &(pip->mask))) {
|
---|
| 527 | /* syntax IP{/mask} error detected, protect all */
|
---|
| 528 | *p0 = 'D';
|
---|
| 529 | pip->mask = 0;
|
---|
| 530 | }
|
---|
| 531 | pip->allow_deny = *p0;
|
---|
| 532 | if(*p0 == 'D') {
|
---|
| 533 | /* Deny:form_IP move top */
|
---|
| 534 | pip->next = config->ip_a_d;
|
---|
| 535 | config->ip_a_d = pip;
|
---|
| 536 | } else {
|
---|
| 537 | /* add to bottom A:form_IP config line */
|
---|
| 538 | Htaccess_IP *prev_IP = config->ip_a_d;
|
---|
| 539 |
|
---|
| 540 | if(prev_IP == NULL) {
|
---|
| 541 | config->ip_a_d = pip;
|
---|
| 542 | } else {
|
---|
| 543 | while(prev_IP->next)
|
---|
| 544 | prev_IP = prev_IP->next;
|
---|
| 545 | prev_IP->next = pip;
|
---|
| 546 | }
|
---|
| 547 | }
|
---|
| 548 | }
|
---|
| 549 | continue;
|
---|
| 550 | }
|
---|
| 551 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 552 | if(*p0 == '/') {
|
---|
| 553 | /* make full path from httpd root / curent_path / config_line_path */
|
---|
| 554 | cf = flag == SUBDIR_PARSE ? path : "";
|
---|
| 555 | p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
|
---|
| 556 | if(p0 == NULL)
|
---|
| 557 | continue;
|
---|
| 558 | c[-1] = 0;
|
---|
| 559 | sprintf(p0, "/%s%s", cf, buf);
|
---|
| 560 |
|
---|
| 561 | /* another call bb_simplify_path */
|
---|
| 562 | cf = p = p0;
|
---|
| 563 |
|
---|
| 564 | do {
|
---|
| 565 | if (*p == '/') {
|
---|
| 566 | if (*cf == '/') { /* skip duplicate (or initial) slash */
|
---|
| 567 | continue;
|
---|
| 568 | } else if (*cf == '.') {
|
---|
| 569 | if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
|
---|
| 570 | continue;
|
---|
| 571 | } else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
|
---|
| 572 | ++cf;
|
---|
| 573 | if (p > p0) {
|
---|
| 574 | while (*--p != '/'); /* omit previous dir */
|
---|
| 575 | }
|
---|
| 576 | continue;
|
---|
| 577 | }
|
---|
| 578 | }
|
---|
| 579 | }
|
---|
| 580 | *++p = *cf;
|
---|
| 581 | } while (*++cf);
|
---|
| 582 |
|
---|
| 583 | if ((p == p0) || (*p != '/')) { /* not a trailing slash */
|
---|
| 584 | ++p; /* so keep last character */
|
---|
| 585 | }
|
---|
| 586 | *p = 0;
|
---|
| 587 | sprintf(p0, "%s:%s", p0, c);
|
---|
| 588 | }
|
---|
| 589 | #endif
|
---|
| 590 |
|
---|
| 591 | #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
|
---|
| 592 | /* storing current config line */
|
---|
| 593 | cur = calloc(1, sizeof(Htaccess) + strlen(p0));
|
---|
| 594 | if(cur) {
|
---|
| 595 | cf = strcpy(cur->before_colon, p0);
|
---|
| 596 | c = strchr(cf, ':');
|
---|
| 597 | *c++ = 0;
|
---|
| 598 | cur->after_colon = c;
|
---|
| 599 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
---|
| 600 | if(*cf == '.') {
|
---|
| 601 | /* config .mime line move top for overwrite previous */
|
---|
| 602 | cur->next = config->mime_a;
|
---|
| 603 | config->mime_a = cur;
|
---|
| 604 | continue;
|
---|
| 605 | }
|
---|
| 606 | #endif
|
---|
| 607 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
|
---|
| 608 | if(*cf == '*' && cf[1] == '.') {
|
---|
| 609 | /* config script interpreter line move top for overwrite previous */
|
---|
| 610 | cur->next = config->script_i;
|
---|
| 611 | config->script_i = cur;
|
---|
| 612 | continue;
|
---|
| 613 | }
|
---|
| 614 | #endif
|
---|
| 615 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 616 | free(p0);
|
---|
| 617 | if(prev == NULL) {
|
---|
| 618 | /* first line */
|
---|
| 619 | config->auth = prev = cur;
|
---|
| 620 | } else {
|
---|
| 621 | /* sort path, if current lenght eq or bigger then move up */
|
---|
| 622 | Htaccess *prev_hti = config->auth;
|
---|
| 623 | size_t l = strlen(cf);
|
---|
| 624 | Htaccess *hti;
|
---|
| 625 |
|
---|
| 626 | for(hti = prev_hti; hti; hti = hti->next) {
|
---|
| 627 | if(l >= strlen(hti->before_colon)) {
|
---|
| 628 | /* insert before hti */
|
---|
| 629 | cur->next = hti;
|
---|
| 630 | if(prev_hti != hti) {
|
---|
| 631 | prev_hti->next = cur;
|
---|
| 632 | } else {
|
---|
| 633 | /* insert as top */
|
---|
| 634 | config->auth = cur;
|
---|
| 635 | }
|
---|
| 636 | break;
|
---|
| 637 | }
|
---|
| 638 | if(prev_hti != hti)
|
---|
| 639 | prev_hti = prev_hti->next;
|
---|
| 640 | }
|
---|
| 641 | if(!hti) { /* not inserted, add to bottom */
|
---|
| 642 | prev->next = cur;
|
---|
| 643 | prev = cur;
|
---|
| 644 | }
|
---|
| 645 | }
|
---|
| 646 | #endif
|
---|
| 647 | }
|
---|
| 648 | #endif
|
---|
| 649 | }
|
---|
| 650 | fclose(f);
|
---|
| 651 | }
|
---|
| 652 |
|
---|
| 653 | #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
|
---|
| 654 | /****************************************************************************
|
---|
| 655 | *
|
---|
| 656 | > $Function: encodeString()
|
---|
| 657 | *
|
---|
| 658 | * $Description: Given a string, html encode special characters.
|
---|
| 659 | * This is used for the -e command line option to provide an easy way
|
---|
| 660 | * for scripts to encode result data without confusing browsers. The
|
---|
| 661 | * returned string pointer is memory allocated by malloc().
|
---|
| 662 | *
|
---|
| 663 | * $Parameters:
|
---|
| 664 | * (const char *) string . . The first string to encode.
|
---|
| 665 | *
|
---|
| 666 | * $Return: (char *) . . . .. . . A pointer to the encoded string.
|
---|
| 667 | *
|
---|
| 668 | * $Errors: Returns a null string ("") if memory is not available.
|
---|
| 669 | *
|
---|
| 670 | ****************************************************************************/
|
---|
| 671 | static char *encodeString(const char *string)
|
---|
| 672 | {
|
---|
| 673 | /* take the simple route and encode everything */
|
---|
| 674 | /* could possibly scan once to get length. */
|
---|
| 675 | int len = strlen(string);
|
---|
| 676 | char *out = malloc(len * 6 + 1);
|
---|
| 677 | char *p=out;
|
---|
| 678 | char ch;
|
---|
| 679 |
|
---|
| 680 | if (!out) return "";
|
---|
| 681 | while ((ch = *string++)) {
|
---|
| 682 | // very simple check for what to encode
|
---|
| 683 | if (isalnum(ch)) *p++ = ch;
|
---|
| 684 | else p += sprintf(p, "&#%d;", (unsigned char) ch);
|
---|
| 685 | }
|
---|
| 686 | *p=0;
|
---|
| 687 | return out;
|
---|
| 688 | }
|
---|
| 689 | #endif /* CONFIG_FEATURE_HTTPD_ENCODE_URL_STR */
|
---|
| 690 |
|
---|
| 691 | /****************************************************************************
|
---|
| 692 | *
|
---|
| 693 | > $Function: decodeString()
|
---|
| 694 | *
|
---|
| 695 | * $Description: Given a URL encoded string, convert it to plain ascii.
|
---|
| 696 | * Since decoding always makes strings smaller, the decode is done in-place.
|
---|
| 697 | * Thus, callers should strdup() the argument if they do not want the
|
---|
| 698 | * argument modified. The return is the original pointer, allowing this
|
---|
| 699 | * function to be easily used as arguments to other functions.
|
---|
| 700 | *
|
---|
| 701 | * $Parameters:
|
---|
| 702 | * (char *) string . . . The first string to decode.
|
---|
| 703 | * (int) flag . . . 1 if require decode '+' as ' ' for CGI
|
---|
| 704 | *
|
---|
| 705 | * $Return: (char *) . . . . A pointer to the decoded string (same as input).
|
---|
| 706 | *
|
---|
| 707 | * $Errors: None
|
---|
| 708 | *
|
---|
| 709 | ****************************************************************************/
|
---|
| 710 | static char *decodeString(char *orig, int flag_plus_to_space)
|
---|
| 711 | {
|
---|
| 712 | /* note that decoded string is always shorter than original */
|
---|
| 713 | char *string = orig;
|
---|
| 714 | char *ptr = string;
|
---|
| 715 |
|
---|
| 716 | while (*ptr)
|
---|
| 717 | {
|
---|
| 718 | if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
|
---|
| 719 | else if (*ptr != '%') *string++ = *ptr++;
|
---|
| 720 | else {
|
---|
| 721 | unsigned int value1, value2;
|
---|
| 722 |
|
---|
| 723 | ptr++;
|
---|
| 724 | if(sscanf(ptr, "%1X", &value1) != 1 ||
|
---|
| 725 | sscanf(ptr+1, "%1X", &value2) != 1) {
|
---|
| 726 | if(!flag_plus_to_space)
|
---|
| 727 | return NULL;
|
---|
| 728 | *string++ = '%';
|
---|
| 729 | } else {
|
---|
| 730 | value1 = value1 * 16 + value2;
|
---|
| 731 | if(value1 == '/' || value1 == 0)
|
---|
| 732 | return orig+1;
|
---|
| 733 | *string++ = value1;
|
---|
| 734 | ptr += 2;
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 | }
|
---|
| 738 | *string = '\0';
|
---|
| 739 | return orig;
|
---|
| 740 | }
|
---|
| 741 |
|
---|
| 742 |
|
---|
| 743 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 744 | /****************************************************************************
|
---|
| 745 | *
|
---|
| 746 | > $Function: addEnv()
|
---|
| 747 | *
|
---|
| 748 | * $Description: Add an environment variable setting to the global list.
|
---|
| 749 | * A NAME=VALUE string is allocated, filled, and added to the list of
|
---|
| 750 | * environment settings passed to the cgi execution script.
|
---|
| 751 | *
|
---|
| 752 | * $Parameters:
|
---|
| 753 | * (char *) name_before_underline - The first part environment variable name.
|
---|
| 754 | * (char *) name_after_underline - The second part environment variable name.
|
---|
| 755 | * (char *) value . . The value to which the env variable is set.
|
---|
| 756 | *
|
---|
| 757 | * $Return: (void)
|
---|
| 758 | *
|
---|
| 759 | * $Errors: Silently returns if the env runs out of space to hold the new item
|
---|
| 760 | *
|
---|
| 761 | ****************************************************************************/
|
---|
| 762 | static void addEnv(const char *name_before_underline,
|
---|
| 763 | const char *name_after_underline, const char *value)
|
---|
| 764 | {
|
---|
| 765 | char *s = NULL;
|
---|
| 766 | const char *underline;
|
---|
| 767 |
|
---|
| 768 | if (!value)
|
---|
| 769 | value = "";
|
---|
| 770 | underline = *name_after_underline ? "_" : "";
|
---|
| 771 | asprintf(&s, "%s%s%s=%s", name_before_underline, underline,
|
---|
| 772 | name_after_underline, value);
|
---|
| 773 | if(s) {
|
---|
| 774 | putenv(s);
|
---|
| 775 | }
|
---|
| 776 | }
|
---|
| 777 |
|
---|
| 778 | #if defined(CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV) || defined(CONFIG_FEATURE_HTTPD_WITHOUT_INETD)
|
---|
| 779 | /* set environs SERVER_PORT and REMOTE_PORT */
|
---|
| 780 | static void addEnvPort(const char *port_name)
|
---|
| 781 | {
|
---|
| 782 | char buf[16];
|
---|
| 783 |
|
---|
| 784 | sprintf(buf, "%u", config->port);
|
---|
| 785 | addEnv(port_name, "PORT", buf);
|
---|
| 786 | }
|
---|
| 787 | #endif
|
---|
| 788 | #endif /* CONFIG_FEATURE_HTTPD_CGI */
|
---|
| 789 |
|
---|
| 790 |
|
---|
| 791 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 792 | /****************************************************************************
|
---|
| 793 | *
|
---|
| 794 | > $Function: decodeBase64()
|
---|
| 795 | *
|
---|
| 796 | > $Description: Decode a base 64 data stream as per rfc1521.
|
---|
| 797 | * Note that the rfc states that none base64 chars are to be ignored.
|
---|
| 798 | * Since the decode always results in a shorter size than the input, it is
|
---|
| 799 | * OK to pass the input arg as an output arg.
|
---|
| 800 | *
|
---|
| 801 | * $Parameter:
|
---|
| 802 | * (char *) Data . . . . A pointer to a base64 encoded string.
|
---|
| 803 | * Where to place the decoded data.
|
---|
| 804 | *
|
---|
| 805 | * $Return: void
|
---|
| 806 | *
|
---|
| 807 | * $Errors: None
|
---|
| 808 | *
|
---|
| 809 | ****************************************************************************/
|
---|
| 810 | static void decodeBase64(char *Data)
|
---|
| 811 | {
|
---|
| 812 |
|
---|
| 813 | const unsigned char *in = (const unsigned char *)Data;
|
---|
| 814 | // The decoded size will be at most 3/4 the size of the encoded
|
---|
| 815 | unsigned long ch = 0;
|
---|
| 816 | int i = 0;
|
---|
| 817 |
|
---|
| 818 | while (*in) {
|
---|
| 819 | int t = *in++;
|
---|
| 820 |
|
---|
| 821 | if(t >= '0' && t <= '9')
|
---|
| 822 | t = t - '0' + 52;
|
---|
| 823 | else if(t >= 'A' && t <= 'Z')
|
---|
| 824 | t = t - 'A';
|
---|
| 825 | else if(t >= 'a' && t <= 'z')
|
---|
| 826 | t = t - 'a' + 26;
|
---|
| 827 | else if(t == '+')
|
---|
| 828 | t = 62;
|
---|
| 829 | else if(t == '/')
|
---|
| 830 | t = 63;
|
---|
| 831 | else if(t == '=')
|
---|
| 832 | t = 0;
|
---|
| 833 | else
|
---|
| 834 | continue;
|
---|
| 835 |
|
---|
| 836 | ch = (ch << 6) | t;
|
---|
| 837 | i++;
|
---|
| 838 | if (i == 4) {
|
---|
| 839 | *Data++ = (char) (ch >> 16);
|
---|
| 840 | *Data++ = (char) (ch >> 8);
|
---|
| 841 | *Data++ = (char) ch;
|
---|
| 842 | i = 0;
|
---|
| 843 | }
|
---|
| 844 | }
|
---|
| 845 | *Data = 0;
|
---|
| 846 | }
|
---|
| 847 | #endif
|
---|
| 848 |
|
---|
| 849 |
|
---|
| 850 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 851 | /****************************************************************************
|
---|
| 852 | *
|
---|
| 853 | > $Function: openServer()
|
---|
| 854 | *
|
---|
| 855 | * $Description: create a listen server socket on the designated port.
|
---|
| 856 | *
|
---|
| 857 | * $Return: (int) . . . A connection socket. -1 for errors.
|
---|
| 858 | *
|
---|
| 859 | * $Errors: None
|
---|
| 860 | *
|
---|
| 861 | ****************************************************************************/
|
---|
| 862 | static int openServer(void)
|
---|
| 863 | {
|
---|
| 864 | struct sockaddr_in lsocket;
|
---|
| 865 | int fd;
|
---|
[902] | 866 | int on = 1;
|
---|
[821] | 867 |
|
---|
| 868 | /* create the socket right now */
|
---|
| 869 | /* inet_addr() returns a value that is already in network order */
|
---|
| 870 | memset(&lsocket, 0, sizeof(lsocket));
|
---|
| 871 | lsocket.sin_family = AF_INET;
|
---|
| 872 | lsocket.sin_addr.s_addr = INADDR_ANY;
|
---|
| 873 | lsocket.sin_port = htons(config->port);
|
---|
| 874 | fd = bb_xsocket(AF_INET, SOCK_STREAM, 0);
|
---|
| 875 | /* tell the OS it's OK to reuse a previous address even though */
|
---|
| 876 | /* it may still be in a close down state. Allows bind to succeed. */
|
---|
| 877 | #ifdef SO_REUSEPORT
|
---|
| 878 | setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *)&on, sizeof(on)) ;
|
---|
| 879 | #else
|
---|
| 880 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)) ;
|
---|
| 881 | #endif
|
---|
| 882 | bb_xbind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket));
|
---|
| 883 | listen(fd, 9); /* bb_xlisten? */
|
---|
| 884 | signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
|
---|
| 885 | return fd;
|
---|
| 886 | }
|
---|
| 887 | #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
|
---|
| 888 |
|
---|
| 889 | /****************************************************************************
|
---|
| 890 | *
|
---|
| 891 | > $Function: sendHeaders()
|
---|
| 892 | *
|
---|
| 893 | * $Description: Create and send HTTP response headers.
|
---|
| 894 | * The arguments are combined and sent as one write operation. Note that
|
---|
| 895 | * IE will puke big-time if the headers are not sent in one packet and the
|
---|
| 896 | * second packet is delayed for any reason.
|
---|
| 897 | *
|
---|
| 898 | * $Parameter:
|
---|
| 899 | * (HttpResponseNum) responseNum . . . The result code to send.
|
---|
| 900 | *
|
---|
| 901 | * $Return: (int) . . . . writing errors
|
---|
| 902 | *
|
---|
| 903 | ****************************************************************************/
|
---|
| 904 | static int sendHeaders(HttpResponseNum responseNum)
|
---|
| 905 | {
|
---|
| 906 | char *buf = config->buf;
|
---|
| 907 | const char *responseString = "";
|
---|
| 908 | const char *infoString = 0;
|
---|
| 909 | const char *mime_type;
|
---|
| 910 | unsigned int i;
|
---|
| 911 | time_t timer = time(0);
|
---|
| 912 | char timeStr[80];
|
---|
| 913 | int len;
|
---|
| 914 |
|
---|
| 915 | for (i = 0;
|
---|
| 916 | i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++) {
|
---|
| 917 | if (httpResponseNames[i].type == responseNum) {
|
---|
| 918 | responseString = httpResponseNames[i].name;
|
---|
| 919 | infoString = httpResponseNames[i].info;
|
---|
| 920 | break;
|
---|
| 921 | }
|
---|
| 922 | }
|
---|
| 923 | /* error message is HTML */
|
---|
| 924 | mime_type = responseNum == HTTP_OK ?
|
---|
| 925 | config->httpd_found.found_mime_type : "text/html";
|
---|
| 926 |
|
---|
| 927 | /* emit the current date */
|
---|
| 928 | strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
|
---|
| 929 | len = sprintf(buf,
|
---|
| 930 | "HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
|
---|
| 931 | "Date: %s\r\nConnection: close\r\n",
|
---|
| 932 | responseNum, responseString, mime_type, timeStr);
|
---|
| 933 |
|
---|
| 934 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 935 | if (responseNum == HTTP_UNAUTHORIZED) {
|
---|
| 936 | len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
|
---|
| 937 | config->realm);
|
---|
| 938 | }
|
---|
| 939 | #endif
|
---|
| 940 | if(responseNum == HTTP_MOVED_TEMPORARILY) {
|
---|
| 941 | len += sprintf(buf+len, "Location: %s/%s%s\r\n",
|
---|
| 942 | config->httpd_found.found_moved_temporarily,
|
---|
| 943 | (config->query ? "?" : ""),
|
---|
| 944 | (config->query ? config->query : ""));
|
---|
| 945 | }
|
---|
| 946 |
|
---|
| 947 | if (config->ContentLength != -1) { /* file */
|
---|
| 948 | strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
|
---|
| 949 | len += sprintf(buf+len, "Last-Modified: %s\r\n%s " cont_l_fmt "\r\n",
|
---|
| 950 | timeStr, Content_length, cont_l_type config->ContentLength);
|
---|
| 951 | }
|
---|
| 952 | strcat(buf, "\r\n");
|
---|
| 953 | len += 2;
|
---|
| 954 | if (infoString) {
|
---|
| 955 | len += sprintf(buf+len,
|
---|
| 956 | "<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
|
---|
| 957 | "<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
|
---|
| 958 | responseNum, responseString,
|
---|
| 959 | responseNum, responseString, infoString);
|
---|
| 960 | }
|
---|
| 961 | #if DEBUG
|
---|
| 962 | fprintf(stderr, "Headers: '%s'", buf);
|
---|
| 963 | #endif
|
---|
| 964 | return bb_full_write(a_c_w, buf, len);
|
---|
| 965 | }
|
---|
| 966 |
|
---|
| 967 | /****************************************************************************
|
---|
| 968 | *
|
---|
| 969 | > $Function: getLine()
|
---|
| 970 | *
|
---|
| 971 | * $Description: Read from the socket until an end of line char found.
|
---|
| 972 | *
|
---|
| 973 | * Characters are read one at a time until an eol sequence is found.
|
---|
| 974 | *
|
---|
| 975 | * $Return: (int) . . . . number of characters read. -1 if error.
|
---|
| 976 | *
|
---|
| 977 | ****************************************************************************/
|
---|
| 978 | static int getLine(void)
|
---|
| 979 | {
|
---|
| 980 | int count = 0;
|
---|
| 981 | char *buf = config->buf;
|
---|
| 982 |
|
---|
| 983 | while (read(a_c_r, buf + count, 1) == 1) {
|
---|
| 984 | if (buf[count] == '\r') continue;
|
---|
| 985 | if (buf[count] == '\n') {
|
---|
| 986 | buf[count] = 0;
|
---|
| 987 | return count;
|
---|
| 988 | }
|
---|
| 989 | if(count < (MAX_MEMORY_BUFF-1)) /* check owerflow */
|
---|
| 990 | count++;
|
---|
| 991 | }
|
---|
| 992 | if (count) return count;
|
---|
| 993 | else return -1;
|
---|
| 994 | }
|
---|
| 995 |
|
---|
| 996 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 997 | /****************************************************************************
|
---|
| 998 | *
|
---|
| 999 | > $Function: sendCgi()
|
---|
| 1000 | *
|
---|
| 1001 | * $Description: Execute a CGI script and send it's stdout back
|
---|
| 1002 | *
|
---|
| 1003 | * Environment variables are set up and the script is invoked with pipes
|
---|
| 1004 | * for stdin/stdout. If a post is being done the script is fed the POST
|
---|
| 1005 | * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
|
---|
| 1006 | *
|
---|
| 1007 | * $Parameters:
|
---|
| 1008 | * (const char *) url . . . . . . The requested URL (with leading /).
|
---|
| 1009 | * (int bodyLen) . . . . . . . . Length of the post body.
|
---|
| 1010 | * (const char *cookie) . . . . . For set HTTP_COOKIE.
|
---|
| 1011 | * (const char *content_type) . . For set CONTENT_TYPE.
|
---|
| 1012 |
|
---|
| 1013 | *
|
---|
| 1014 | * $Return: (char *) . . . . A pointer to the decoded string (same as input).
|
---|
| 1015 | *
|
---|
| 1016 | * $Errors: None
|
---|
| 1017 | *
|
---|
| 1018 | ****************************************************************************/
|
---|
| 1019 | static int sendCgi(const char *url,
|
---|
| 1020 | const char *request, int bodyLen, const char *cookie,
|
---|
| 1021 | const char *content_type)
|
---|
| 1022 | {
|
---|
| 1023 | int fromCgi[2]; /* pipe for reading data from CGI */
|
---|
| 1024 | int toCgi[2]; /* pipe for sending data to CGI */
|
---|
| 1025 |
|
---|
| 1026 | static char * argp[] = { 0, 0 };
|
---|
| 1027 | int pid = 0;
|
---|
| 1028 | int inFd;
|
---|
| 1029 | int outFd;
|
---|
| 1030 | int firstLine = 1;
|
---|
| 1031 |
|
---|
| 1032 | do {
|
---|
| 1033 | if (pipe(fromCgi) != 0) {
|
---|
| 1034 | break;
|
---|
| 1035 | }
|
---|
| 1036 | if (pipe(toCgi) != 0) {
|
---|
| 1037 | break;
|
---|
| 1038 | }
|
---|
| 1039 |
|
---|
| 1040 | pid = fork();
|
---|
| 1041 | if (pid < 0) {
|
---|
| 1042 | pid = 0;
|
---|
| 1043 | break;
|
---|
| 1044 | }
|
---|
| 1045 |
|
---|
| 1046 | if (!pid) {
|
---|
| 1047 | /* child process */
|
---|
| 1048 | char *script;
|
---|
| 1049 | char *purl = strdup( url );
|
---|
| 1050 | char realpath_buff[MAXPATHLEN];
|
---|
| 1051 |
|
---|
| 1052 | if(purl == NULL)
|
---|
| 1053 | _exit(242);
|
---|
| 1054 |
|
---|
| 1055 | inFd = toCgi[0];
|
---|
| 1056 | outFd = fromCgi[1];
|
---|
| 1057 |
|
---|
| 1058 | dup2(inFd, 0); // replace stdin with the pipe
|
---|
| 1059 | dup2(outFd, 1); // replace stdout with the pipe
|
---|
| 1060 | if(!DEBUG)
|
---|
| 1061 | dup2(outFd, 2); // replace stderr with the pipe
|
---|
| 1062 |
|
---|
| 1063 | close(toCgi[0]);
|
---|
| 1064 | close(toCgi[1]);
|
---|
| 1065 | close(fromCgi[0]);
|
---|
| 1066 | close(fromCgi[1]);
|
---|
| 1067 |
|
---|
| 1068 | /*
|
---|
| 1069 | * Find PATH_INFO.
|
---|
| 1070 | */
|
---|
| 1071 | script = purl;
|
---|
| 1072 | while((script = strchr( script + 1, '/' )) != NULL) {
|
---|
| 1073 | /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
|
---|
| 1074 | struct stat sb;
|
---|
| 1075 |
|
---|
| 1076 | *script = '\0';
|
---|
| 1077 | if(is_directory(purl + 1, 1, &sb) == 0) {
|
---|
| 1078 | /* not directory, found script.cgi/PATH_INFO */
|
---|
| 1079 | *script = '/';
|
---|
| 1080 | break;
|
---|
| 1081 | }
|
---|
| 1082 | *script = '/'; /* is directory, find next '/' */
|
---|
| 1083 | }
|
---|
| 1084 | addEnv("PATH", "INFO", script); /* set /PATH_INFO or NULL */
|
---|
| 1085 | addEnv("PATH", "", getenv("PATH"));
|
---|
| 1086 | addEnv("REQUEST", "METHOD", request);
|
---|
| 1087 | if(config->query) {
|
---|
| 1088 | char *uri = alloca(strlen(purl) + 2 + strlen(config->query));
|
---|
| 1089 | if(uri)
|
---|
| 1090 | sprintf(uri, "%s?%s", purl, config->query);
|
---|
| 1091 | addEnv("REQUEST", "URI", uri);
|
---|
| 1092 | } else {
|
---|
| 1093 | addEnv("REQUEST", "URI", purl);
|
---|
| 1094 | }
|
---|
| 1095 | if(script != NULL)
|
---|
| 1096 | *script = '\0'; /* reduce /PATH_INFO */
|
---|
| 1097 | /* SCRIPT_FILENAME required by PHP in CGI mode */
|
---|
| 1098 | if(realpath(purl + 1, realpath_buff))
|
---|
| 1099 | addEnv("SCRIPT", "FILENAME", realpath_buff);
|
---|
| 1100 | else
|
---|
| 1101 | *realpath_buff = 0;
|
---|
| 1102 | /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
|
---|
| 1103 | addEnv("SCRIPT_NAME", "", purl);
|
---|
| 1104 | addEnv("QUERY_STRING", "", config->query);
|
---|
| 1105 | addEnv("SERVER", "SOFTWARE", httpdVersion);
|
---|
| 1106 | addEnv("SERVER", "PROTOCOL", "HTTP/1.0");
|
---|
| 1107 | addEnv("GATEWAY_INTERFACE", "", "CGI/1.1");
|
---|
| 1108 | addEnv("REMOTE", "ADDR", config->rmt_ip_str);
|
---|
| 1109 | #ifdef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
|
---|
| 1110 | addEnvPort("REMOTE");
|
---|
| 1111 | #endif
|
---|
| 1112 | if(bodyLen) {
|
---|
| 1113 | char sbl[32];
|
---|
| 1114 |
|
---|
| 1115 | sprintf(sbl, "%d", bodyLen);
|
---|
| 1116 | addEnv("CONTENT", "LENGTH", sbl);
|
---|
| 1117 | }
|
---|
| 1118 | if(cookie)
|
---|
| 1119 | addEnv("HTTP", "COOKIE", cookie);
|
---|
| 1120 | if(content_type)
|
---|
| 1121 | addEnv("CONTENT", "TYPE", content_type);
|
---|
| 1122 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1123 | if(config->remoteuser) {
|
---|
| 1124 | addEnv("REMOTE", "USER", config->remoteuser);
|
---|
| 1125 | addEnv("AUTH_TYPE", "", "Basic");
|
---|
| 1126 | }
|
---|
| 1127 | #endif
|
---|
| 1128 | if(config->referer)
|
---|
| 1129 | addEnv("HTTP", "REFERER", config->referer);
|
---|
| 1130 |
|
---|
| 1131 | /* set execve argp[0] without path */
|
---|
| 1132 | argp[0] = strrchr( purl, '/' ) + 1;
|
---|
| 1133 | /* but script argp[0] must have absolute path and chdiring to this */
|
---|
| 1134 | if(*realpath_buff) {
|
---|
| 1135 | script = strrchr(realpath_buff, '/');
|
---|
| 1136 | if(script) {
|
---|
| 1137 | *script = '\0';
|
---|
| 1138 | if(chdir(realpath_buff) == 0) {
|
---|
| 1139 | // now run the program. If it fails,
|
---|
| 1140 | // use _exit() so no destructors
|
---|
| 1141 | // get called and make a mess.
|
---|
| 1142 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
|
---|
| 1143 | char *interpr = NULL;
|
---|
| 1144 | char *suffix = strrchr(purl, '.');
|
---|
| 1145 |
|
---|
| 1146 | if(suffix) {
|
---|
| 1147 | Htaccess * cur;
|
---|
| 1148 | for (cur = config->script_i; cur; cur = cur->next)
|
---|
| 1149 | if(strcmp(cur->before_colon + 1, suffix) == 0) {
|
---|
| 1150 | interpr = cur->after_colon;
|
---|
| 1151 | break;
|
---|
| 1152 | }
|
---|
| 1153 | }
|
---|
| 1154 | #endif
|
---|
| 1155 | *script = '/';
|
---|
| 1156 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
|
---|
| 1157 | if (interpr)
|
---|
| 1158 | execv(interpr, argp);
|
---|
| 1159 | else
|
---|
| 1160 | #endif
|
---|
| 1161 | execv(realpath_buff, argp);
|
---|
| 1162 | }
|
---|
| 1163 | }
|
---|
| 1164 | }
|
---|
| 1165 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1166 | config->accepted_socket = 1; /* send to stdout */
|
---|
| 1167 | #endif
|
---|
| 1168 | sendHeaders(HTTP_NOT_FOUND);
|
---|
| 1169 | _exit(242);
|
---|
| 1170 | } /* end child */
|
---|
| 1171 |
|
---|
| 1172 | } while (0);
|
---|
| 1173 |
|
---|
| 1174 | if (pid) {
|
---|
| 1175 | /* parent process */
|
---|
| 1176 | int status;
|
---|
| 1177 | size_t post_readed_size = 0, post_readed_idx = 0;
|
---|
| 1178 |
|
---|
| 1179 | inFd = fromCgi[0];
|
---|
| 1180 | outFd = toCgi[1];
|
---|
| 1181 | close(fromCgi[1]);
|
---|
| 1182 | close(toCgi[0]);
|
---|
| 1183 | signal(SIGPIPE, SIG_IGN);
|
---|
| 1184 |
|
---|
| 1185 | while (1) {
|
---|
| 1186 | fd_set readSet;
|
---|
| 1187 | fd_set writeSet;
|
---|
| 1188 | char wbuf[128];
|
---|
| 1189 | int nfound;
|
---|
| 1190 | int count;
|
---|
| 1191 |
|
---|
| 1192 | FD_ZERO(&readSet);
|
---|
| 1193 | FD_ZERO(&writeSet);
|
---|
| 1194 | FD_SET(inFd, &readSet);
|
---|
| 1195 | if(bodyLen > 0 || post_readed_size > 0) {
|
---|
| 1196 | FD_SET(outFd, &writeSet);
|
---|
| 1197 | nfound = outFd > inFd ? outFd : inFd;
|
---|
| 1198 | if(post_readed_size == 0) {
|
---|
| 1199 | FD_SET(a_c_r, &readSet);
|
---|
| 1200 | if(nfound < a_c_r)
|
---|
| 1201 | nfound = a_c_r;
|
---|
| 1202 | }
|
---|
| 1203 | /* Now wait on the set of sockets! */
|
---|
| 1204 | nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
|
---|
| 1205 | } else {
|
---|
| 1206 | if(!bodyLen) {
|
---|
| 1207 | close(outFd);
|
---|
| 1208 | bodyLen = -1;
|
---|
| 1209 | }
|
---|
| 1210 | nfound = select(inFd + 1, &readSet, 0, 0, NULL);
|
---|
| 1211 | }
|
---|
| 1212 |
|
---|
| 1213 | if (nfound <= 0) {
|
---|
| 1214 | if (waitpid(pid, &status, WNOHANG) > 0) {
|
---|
| 1215 | close(inFd);
|
---|
| 1216 | #if DEBUG
|
---|
| 1217 | if (WIFEXITED(status))
|
---|
| 1218 | bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
|
---|
| 1219 | if (WIFSIGNALED(status))
|
---|
| 1220 | bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
|
---|
| 1221 | #endif
|
---|
| 1222 | break;
|
---|
| 1223 | }
|
---|
| 1224 | } else if(post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
|
---|
| 1225 | count = bb_full_write(outFd, wbuf + post_readed_idx, post_readed_size);
|
---|
| 1226 | if(count > 0) {
|
---|
| 1227 | post_readed_size -= count;
|
---|
| 1228 | post_readed_idx += count;
|
---|
| 1229 | if(post_readed_size == 0)
|
---|
| 1230 | post_readed_idx = 0;
|
---|
| 1231 | } else {
|
---|
| 1232 | post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
|
---|
| 1233 | }
|
---|
| 1234 | } else if(bodyLen > 0 && post_readed_size == 0 && FD_ISSET(a_c_r, &readSet)) {
|
---|
| 1235 | count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
|
---|
| 1236 | count = safe_read(a_c_r, wbuf, count);
|
---|
| 1237 | if(count > 0) {
|
---|
| 1238 | post_readed_size += count;
|
---|
| 1239 | bodyLen -= count;
|
---|
| 1240 | } else {
|
---|
| 1241 | bodyLen = 0; /* closed */
|
---|
| 1242 | }
|
---|
| 1243 | }
|
---|
| 1244 | if(FD_ISSET(inFd, &readSet)) {
|
---|
| 1245 | int s = a_c_w;
|
---|
| 1246 | char *rbuf = config->buf;
|
---|
| 1247 |
|
---|
| 1248 | #ifndef PIPE_BUF
|
---|
| 1249 | # define PIPESIZE 4096 /* amount of buffering in a pipe */
|
---|
| 1250 | #else
|
---|
| 1251 | # define PIPESIZE PIPE_BUF
|
---|
| 1252 | #endif
|
---|
| 1253 | #if PIPESIZE >= MAX_MEMORY_BUFF
|
---|
| 1254 | # error "PIPESIZE >= MAX_MEMORY_BUFF"
|
---|
| 1255 | #endif
|
---|
| 1256 |
|
---|
| 1257 | // There is something to read
|
---|
| 1258 | count = safe_read(inFd, rbuf, PIPESIZE);
|
---|
| 1259 | if (count == 0)
|
---|
| 1260 | break; /* closed */
|
---|
| 1261 | if (count > 0) {
|
---|
| 1262 | if (firstLine) {
|
---|
| 1263 | rbuf[count] = 0;
|
---|
| 1264 | /* check to see if the user script added headers */
|
---|
| 1265 | if(strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
|
---|
| 1266 | bb_full_write(s, "HTTP/1.0 200 OK\r\n", 17);
|
---|
| 1267 | }
|
---|
| 1268 | if (strstr(rbuf, "ontent-") == 0) {
|
---|
| 1269 | bb_full_write(s, "Content-type: text/plain\r\n\r\n", 28);
|
---|
| 1270 | }
|
---|
| 1271 | firstLine = 0;
|
---|
| 1272 | }
|
---|
| 1273 | if (bb_full_write(s, rbuf, count) != count)
|
---|
| 1274 | break;
|
---|
| 1275 |
|
---|
| 1276 | #if DEBUG
|
---|
| 1277 | fprintf(stderr, "cgi read %d bytes\n", count);
|
---|
| 1278 | #endif
|
---|
| 1279 | }
|
---|
| 1280 | }
|
---|
| 1281 | }
|
---|
| 1282 | }
|
---|
| 1283 | return 0;
|
---|
| 1284 | }
|
---|
| 1285 | #endif /* CONFIG_FEATURE_HTTPD_CGI */
|
---|
| 1286 |
|
---|
| 1287 | /****************************************************************************
|
---|
| 1288 | *
|
---|
| 1289 | > $Function: sendFile()
|
---|
| 1290 | *
|
---|
| 1291 | * $Description: Send a file response to an HTTP request
|
---|
| 1292 | *
|
---|
| 1293 | * $Parameter:
|
---|
| 1294 | * (const char *) url . . The URL requested.
|
---|
| 1295 | *
|
---|
| 1296 | * $Return: (int) . . . . . . Always 0.
|
---|
| 1297 | *
|
---|
| 1298 | ****************************************************************************/
|
---|
| 1299 | static int sendFile(const char *url)
|
---|
| 1300 | {
|
---|
| 1301 | char * suffix;
|
---|
| 1302 | int f;
|
---|
| 1303 | const char * const * table;
|
---|
| 1304 | const char * try_suffix;
|
---|
| 1305 |
|
---|
| 1306 | suffix = strrchr(url, '.');
|
---|
| 1307 |
|
---|
| 1308 | for (table = suffixTable; *table; table += 2)
|
---|
| 1309 | if(suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
|
---|
| 1310 | try_suffix += strlen(suffix);
|
---|
| 1311 | if(*try_suffix == 0 || *try_suffix == '.')
|
---|
| 1312 | break;
|
---|
| 1313 | }
|
---|
| 1314 | /* also, if not found, set default as "application/octet-stream"; */
|
---|
| 1315 | config->httpd_found.found_mime_type = *(table+1);
|
---|
| 1316 | #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
|
---|
| 1317 | if (suffix) {
|
---|
| 1318 | Htaccess * cur;
|
---|
| 1319 |
|
---|
| 1320 | for (cur = config->mime_a; cur; cur = cur->next) {
|
---|
| 1321 | if(strcmp(cur->before_colon, suffix) == 0) {
|
---|
| 1322 | config->httpd_found.found_mime_type = cur->after_colon;
|
---|
| 1323 | break;
|
---|
| 1324 | }
|
---|
| 1325 | }
|
---|
| 1326 | }
|
---|
| 1327 | #endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
|
---|
| 1328 |
|
---|
| 1329 | #if DEBUG
|
---|
| 1330 | fprintf(stderr, "Sending file '%s' Content-type: %s\n",
|
---|
| 1331 | url, config->httpd_found.found_mime_type);
|
---|
| 1332 | #endif
|
---|
| 1333 |
|
---|
| 1334 | f = open(url, O_RDONLY);
|
---|
| 1335 | if (f >= 0) {
|
---|
| 1336 | int count;
|
---|
| 1337 | char *buf = config->buf;
|
---|
| 1338 |
|
---|
| 1339 | sendHeaders(HTTP_OK);
|
---|
| 1340 | while ((count = bb_full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
|
---|
| 1341 | if (bb_full_write(a_c_w, buf, count) != count)
|
---|
| 1342 | break;
|
---|
| 1343 | }
|
---|
| 1344 | close(f);
|
---|
| 1345 | } else {
|
---|
| 1346 | #if DEBUG
|
---|
| 1347 | bb_perror_msg("Unable to open '%s'", url);
|
---|
| 1348 | #endif
|
---|
| 1349 | sendHeaders(HTTP_NOT_FOUND);
|
---|
| 1350 | }
|
---|
| 1351 |
|
---|
| 1352 | return 0;
|
---|
| 1353 | }
|
---|
| 1354 |
|
---|
| 1355 | static int checkPermIP(void)
|
---|
| 1356 | {
|
---|
| 1357 | Htaccess_IP * cur;
|
---|
| 1358 |
|
---|
| 1359 | /* This could stand some work */
|
---|
| 1360 | for (cur = config->ip_a_d; cur; cur = cur->next) {
|
---|
| 1361 | #if DEBUG
|
---|
| 1362 | fprintf(stderr, "checkPermIP: '%s' ? ", config->rmt_ip_str);
|
---|
| 1363 | fprintf(stderr, "'%u.%u.%u.%u/%u.%u.%u.%u'\n",
|
---|
| 1364 | (unsigned char)(cur->ip >> 24),
|
---|
| 1365 | (unsigned char)(cur->ip >> 16),
|
---|
| 1366 | (unsigned char)(cur->ip >> 8),
|
---|
| 1367 | cur->ip & 0xff,
|
---|
| 1368 | (unsigned char)(cur->mask >> 24),
|
---|
| 1369 | (unsigned char)(cur->mask >> 16),
|
---|
| 1370 | (unsigned char)(cur->mask >> 8),
|
---|
| 1371 | cur->mask & 0xff);
|
---|
| 1372 | #endif
|
---|
| 1373 | if((config->rmt_ip & cur->mask) == cur->ip)
|
---|
| 1374 | return cur->allow_deny == 'A'; /* Allow/Deny */
|
---|
| 1375 | }
|
---|
| 1376 |
|
---|
| 1377 | /* if unconfigured, return 1 - access from all */
|
---|
| 1378 | return !config->flg_deny_all;
|
---|
| 1379 | }
|
---|
| 1380 |
|
---|
| 1381 | /****************************************************************************
|
---|
| 1382 | *
|
---|
| 1383 | > $Function: checkPerm()
|
---|
| 1384 | *
|
---|
| 1385 | * $Description: Check the permission file for access password protected.
|
---|
| 1386 | *
|
---|
| 1387 | * If config file isn't present, everything is allowed.
|
---|
| 1388 | * Entries are of the form you can see example from header source
|
---|
| 1389 | *
|
---|
| 1390 | * $Parameters:
|
---|
| 1391 | * (const char *) path . . . . The file path.
|
---|
| 1392 | * (const char *) request . . . User information to validate.
|
---|
| 1393 | *
|
---|
| 1394 | * $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
|
---|
| 1395 | *
|
---|
| 1396 | ****************************************************************************/
|
---|
| 1397 |
|
---|
| 1398 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1399 | static int checkPerm(const char *path, const char *request)
|
---|
| 1400 | {
|
---|
| 1401 | Htaccess * cur;
|
---|
| 1402 | const char *p;
|
---|
| 1403 | const char *p0;
|
---|
| 1404 |
|
---|
| 1405 | const char *prev = NULL;
|
---|
| 1406 |
|
---|
| 1407 | /* This could stand some work */
|
---|
| 1408 | for (cur = config->auth; cur; cur = cur->next) {
|
---|
| 1409 | p0 = cur->before_colon;
|
---|
| 1410 | if(prev != NULL && strcmp(prev, p0) != 0)
|
---|
| 1411 | continue; /* find next identical */
|
---|
| 1412 | p = cur->after_colon;
|
---|
| 1413 | #if DEBUG
|
---|
| 1414 | fprintf(stderr,"checkPerm: '%s' ? '%s'\n", p0, request);
|
---|
| 1415 | #endif
|
---|
| 1416 | {
|
---|
| 1417 | size_t l = strlen(p0);
|
---|
| 1418 |
|
---|
| 1419 | if(strncmp(p0, path, l) == 0 &&
|
---|
| 1420 | (l == 1 || path[l] == '/' || path[l] == 0)) {
|
---|
| 1421 | char *u;
|
---|
| 1422 | /* path match found. Check request */
|
---|
| 1423 | /* for check next /path:user:password */
|
---|
| 1424 | prev = p0;
|
---|
| 1425 | u = strchr(request, ':');
|
---|
| 1426 | if(u == NULL) {
|
---|
| 1427 | /* bad request, ':' required */
|
---|
| 1428 | break;
|
---|
| 1429 | }
|
---|
| 1430 |
|
---|
| 1431 | #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
|
---|
| 1432 | {
|
---|
| 1433 | char *cipher;
|
---|
| 1434 | char *pp;
|
---|
| 1435 |
|
---|
| 1436 | if(strncmp(p, request, u-request) != 0) {
|
---|
| 1437 | /* user uncompared */
|
---|
| 1438 | continue;
|
---|
| 1439 | }
|
---|
| 1440 | pp = strchr(p, ':');
|
---|
| 1441 | if(pp && pp[1] == '$' && pp[2] == '1' &&
|
---|
| 1442 | pp[3] == '$' && pp[4]) {
|
---|
| 1443 | pp++;
|
---|
| 1444 | cipher = pw_encrypt(u+1, pp);
|
---|
| 1445 | if (strcmp(cipher, pp) == 0)
|
---|
| 1446 | goto set_remoteuser_var; /* Ok */
|
---|
| 1447 | /* unauthorized */
|
---|
| 1448 | continue;
|
---|
| 1449 | }
|
---|
| 1450 | }
|
---|
| 1451 | #endif
|
---|
| 1452 | if (strcmp(p, request) == 0) {
|
---|
| 1453 | #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
|
---|
| 1454 | set_remoteuser_var:
|
---|
| 1455 | #endif
|
---|
| 1456 | config->remoteuser = strdup(request);
|
---|
| 1457 | if(config->remoteuser)
|
---|
| 1458 | config->remoteuser[(u - request)] = 0;
|
---|
| 1459 | return 1; /* Ok */
|
---|
| 1460 | }
|
---|
| 1461 | /* unauthorized */
|
---|
| 1462 | }
|
---|
| 1463 | }
|
---|
| 1464 | } /* for */
|
---|
| 1465 |
|
---|
| 1466 | return prev == NULL;
|
---|
| 1467 | }
|
---|
| 1468 |
|
---|
| 1469 | #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
|
---|
| 1470 |
|
---|
| 1471 | /****************************************************************************
|
---|
| 1472 | *
|
---|
| 1473 | > $Function: handle_sigalrm()
|
---|
| 1474 | *
|
---|
| 1475 | * $Description: Handle timeouts
|
---|
| 1476 | *
|
---|
| 1477 | ****************************************************************************/
|
---|
| 1478 |
|
---|
| 1479 | static void
|
---|
| 1480 | handle_sigalrm( int sig )
|
---|
| 1481 | {
|
---|
| 1482 | sendHeaders(HTTP_REQUEST_TIMEOUT);
|
---|
| 1483 | config->alarm_signaled = sig;
|
---|
| 1484 | }
|
---|
| 1485 |
|
---|
| 1486 | /****************************************************************************
|
---|
| 1487 | *
|
---|
| 1488 | > $Function: handleIncoming()
|
---|
| 1489 | *
|
---|
| 1490 | * $Description: Handle an incoming http request.
|
---|
| 1491 | *
|
---|
| 1492 | ****************************************************************************/
|
---|
| 1493 | static void handleIncoming(void)
|
---|
| 1494 | {
|
---|
| 1495 | char *buf = config->buf;
|
---|
| 1496 | char *url;
|
---|
| 1497 | char *purl;
|
---|
| 1498 | int blank = -1;
|
---|
| 1499 | char *test;
|
---|
| 1500 | struct stat sb;
|
---|
| 1501 | int ip_allowed;
|
---|
| 1502 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1503 | const char *prequest = request_GET;
|
---|
| 1504 | long length=0;
|
---|
| 1505 | char *cookie = 0;
|
---|
| 1506 | char *content_type = 0;
|
---|
| 1507 | #endif
|
---|
| 1508 | fd_set s_fd;
|
---|
| 1509 | struct timeval tv;
|
---|
| 1510 | int retval;
|
---|
| 1511 | struct sigaction sa;
|
---|
| 1512 |
|
---|
| 1513 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1514 | int credentials = -1; /* if not requred this is Ok */
|
---|
| 1515 | #endif
|
---|
| 1516 |
|
---|
| 1517 | sa.sa_handler = handle_sigalrm;
|
---|
| 1518 | sigemptyset(&sa.sa_mask);
|
---|
| 1519 | sa.sa_flags = 0; /* no SA_RESTART */
|
---|
| 1520 | sigaction(SIGALRM, &sa, NULL);
|
---|
| 1521 |
|
---|
| 1522 | do {
|
---|
| 1523 | int count;
|
---|
| 1524 |
|
---|
| 1525 | (void) alarm( TIMEOUT );
|
---|
| 1526 | if (getLine() <= 0)
|
---|
| 1527 | break; /* closed */
|
---|
| 1528 |
|
---|
| 1529 | purl = strpbrk(buf, " \t");
|
---|
| 1530 | if(purl == NULL) {
|
---|
| 1531 | BAD_REQUEST:
|
---|
| 1532 | sendHeaders(HTTP_BAD_REQUEST);
|
---|
| 1533 | break;
|
---|
| 1534 | }
|
---|
| 1535 | *purl = 0;
|
---|
| 1536 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1537 | if(strcasecmp(buf, prequest) != 0) {
|
---|
| 1538 | prequest = "POST";
|
---|
| 1539 | if(strcasecmp(buf, prequest) != 0) {
|
---|
| 1540 | sendHeaders(HTTP_NOT_IMPLEMENTED);
|
---|
| 1541 | break;
|
---|
| 1542 | }
|
---|
| 1543 | }
|
---|
| 1544 | #else
|
---|
| 1545 | if(strcasecmp(buf, request_GET) != 0) {
|
---|
| 1546 | sendHeaders(HTTP_NOT_IMPLEMENTED);
|
---|
| 1547 | break;
|
---|
| 1548 | }
|
---|
| 1549 | #endif
|
---|
| 1550 | *purl = ' ';
|
---|
| 1551 | count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
|
---|
| 1552 |
|
---|
| 1553 | if (count < 1 || buf[0] != '/') {
|
---|
| 1554 | /* Garbled request/URL */
|
---|
| 1555 | goto BAD_REQUEST;
|
---|
| 1556 | }
|
---|
| 1557 | url = alloca(strlen(buf) + 12); /* + sizeof("/index.html\0") */
|
---|
| 1558 | if(url == NULL) {
|
---|
| 1559 | sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
|
---|
| 1560 | break;
|
---|
| 1561 | }
|
---|
| 1562 | strcpy(url, buf);
|
---|
| 1563 | /* extract url args if present */
|
---|
| 1564 | test = strchr(url, '?');
|
---|
| 1565 | if (test) {
|
---|
| 1566 | *test++ = 0;
|
---|
| 1567 | config->query = test;
|
---|
| 1568 | }
|
---|
| 1569 |
|
---|
| 1570 | test = decodeString(url, 0);
|
---|
| 1571 | if(test == NULL)
|
---|
| 1572 | goto BAD_REQUEST;
|
---|
| 1573 | if(test == (buf+1)) {
|
---|
| 1574 | sendHeaders(HTTP_NOT_FOUND);
|
---|
| 1575 | break;
|
---|
| 1576 | }
|
---|
| 1577 | /* algorithm stolen from libbb bb_simplify_path(),
|
---|
| 1578 | but don`t strdup and reducing trailing slash and protect out root */
|
---|
| 1579 | purl = test = url;
|
---|
| 1580 |
|
---|
| 1581 | do {
|
---|
| 1582 | if (*purl == '/') {
|
---|
| 1583 | if (*test == '/') { /* skip duplicate (or initial) slash */
|
---|
| 1584 | continue;
|
---|
| 1585 | } else if (*test == '.') {
|
---|
| 1586 | if (test[1] == '/' || test[1] == 0) { /* skip extra '.' */
|
---|
| 1587 | continue;
|
---|
| 1588 | } else if ((test[1] == '.') && (test[2] == '/' || test[2] == 0)) {
|
---|
| 1589 | ++test;
|
---|
| 1590 | if (purl == url) {
|
---|
| 1591 | /* protect out root */
|
---|
| 1592 | goto BAD_REQUEST;
|
---|
| 1593 | }
|
---|
| 1594 | while (*--purl != '/'); /* omit previous dir */
|
---|
| 1595 | continue;
|
---|
| 1596 | }
|
---|
| 1597 | }
|
---|
| 1598 | }
|
---|
| 1599 | *++purl = *test;
|
---|
| 1600 | } while (*++test);
|
---|
| 1601 |
|
---|
| 1602 | *++purl = 0; /* so keep last character */
|
---|
| 1603 | test = purl; /* end ptr */
|
---|
| 1604 |
|
---|
| 1605 | /* If URL is directory, adding '/' */
|
---|
| 1606 | if(test[-1] != '/') {
|
---|
| 1607 | if ( is_directory(url + 1, 1, &sb) ) {
|
---|
| 1608 | config->httpd_found.found_moved_temporarily = url;
|
---|
| 1609 | }
|
---|
| 1610 | }
|
---|
| 1611 | #if DEBUG
|
---|
| 1612 | fprintf(stderr, "url='%s', args=%s\n", url, config->query);
|
---|
| 1613 | #endif
|
---|
| 1614 |
|
---|
| 1615 | test = url;
|
---|
| 1616 | ip_allowed = checkPermIP();
|
---|
| 1617 | while(ip_allowed && (test = strchr( test + 1, '/' )) != NULL) {
|
---|
| 1618 | /* have path1/path2 */
|
---|
| 1619 | *test = '\0';
|
---|
| 1620 | if( is_directory(url + 1, 1, &sb) ) {
|
---|
| 1621 | /* may be having subdir config */
|
---|
| 1622 | parse_conf(url + 1, SUBDIR_PARSE);
|
---|
| 1623 | ip_allowed = checkPermIP();
|
---|
| 1624 | }
|
---|
| 1625 | *test = '/';
|
---|
| 1626 | }
|
---|
| 1627 | if(blank >= 0) {
|
---|
| 1628 | // read until blank line for HTTP version specified, else parse immediate
|
---|
| 1629 | while(1) {
|
---|
| 1630 | alarm(TIMEOUT);
|
---|
| 1631 | count = getLine();
|
---|
| 1632 | if(count <= 0)
|
---|
| 1633 | break;
|
---|
| 1634 |
|
---|
| 1635 | #if DEBUG
|
---|
| 1636 | fprintf(stderr, "Header: '%s'\n", buf);
|
---|
| 1637 | #endif
|
---|
| 1638 |
|
---|
| 1639 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1640 | /* try and do our best to parse more lines */
|
---|
| 1641 | if ((strncasecmp(buf, Content_length, 15) == 0)) {
|
---|
| 1642 | if(prequest != request_GET)
|
---|
| 1643 | length = strtol(buf + 15, 0, 0); // extra read only for POST
|
---|
| 1644 | } else if ((strncasecmp(buf, "Cookie:", 7) == 0)) {
|
---|
| 1645 | for(test = buf + 7; isspace(*test); test++)
|
---|
| 1646 | ;
|
---|
| 1647 | cookie = strdup(test);
|
---|
| 1648 | } else if ((strncasecmp(buf, "Content-Type:", 13) == 0)) {
|
---|
| 1649 | for(test = buf + 13; isspace(*test); test++)
|
---|
| 1650 | ;
|
---|
| 1651 | content_type = strdup(test);
|
---|
| 1652 | } else if ((strncasecmp(buf, "Referer:", 8) == 0)) {
|
---|
| 1653 | for(test = buf + 8; isspace(*test); test++)
|
---|
| 1654 | ;
|
---|
| 1655 | config->referer = strdup(test);
|
---|
| 1656 | }
|
---|
| 1657 | #endif
|
---|
| 1658 |
|
---|
| 1659 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1660 | if (strncasecmp(buf, "Authorization:", 14) == 0) {
|
---|
| 1661 | /* We only allow Basic credentials.
|
---|
| 1662 | * It shows up as "Authorization: Basic <userid:password>" where
|
---|
| 1663 | * the userid:password is base64 encoded.
|
---|
| 1664 | */
|
---|
| 1665 | for(test = buf + 14; isspace(*test); test++)
|
---|
| 1666 | ;
|
---|
| 1667 | if (strncasecmp(test, "Basic", 5) != 0)
|
---|
| 1668 | continue;
|
---|
| 1669 |
|
---|
| 1670 | test += 5; /* decodeBase64() skiping space self */
|
---|
| 1671 | decodeBase64(test);
|
---|
| 1672 | credentials = checkPerm(url, test);
|
---|
| 1673 | }
|
---|
| 1674 | #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
|
---|
| 1675 |
|
---|
| 1676 | } /* while extra header reading */
|
---|
| 1677 | }
|
---|
| 1678 | (void) alarm( 0 );
|
---|
| 1679 | if(config->alarm_signaled)
|
---|
| 1680 | break;
|
---|
| 1681 |
|
---|
| 1682 | if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
|
---|
| 1683 | /* protect listing [/path]/httpd_conf or IP deny */
|
---|
| 1684 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1685 | FORBIDDEN: /* protect listing /cgi-bin */
|
---|
| 1686 | #endif
|
---|
| 1687 | sendHeaders(HTTP_FORBIDDEN);
|
---|
| 1688 | break;
|
---|
| 1689 | }
|
---|
| 1690 |
|
---|
| 1691 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1692 | if (credentials <= 0 && checkPerm(url, ":") == 0) {
|
---|
| 1693 | sendHeaders(HTTP_UNAUTHORIZED);
|
---|
| 1694 | break;
|
---|
| 1695 | }
|
---|
| 1696 | #endif
|
---|
| 1697 |
|
---|
| 1698 | if(config->httpd_found.found_moved_temporarily) {
|
---|
| 1699 | sendHeaders(HTTP_MOVED_TEMPORARILY);
|
---|
| 1700 | #if DEBUG
|
---|
| 1701 | /* clear unforked memory flag */
|
---|
| 1702 | config->httpd_found.found_moved_temporarily = NULL;
|
---|
| 1703 | #endif
|
---|
| 1704 | break;
|
---|
| 1705 | }
|
---|
| 1706 |
|
---|
| 1707 | test = url + 1; /* skip first '/' */
|
---|
| 1708 |
|
---|
| 1709 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1710 | /* if strange Content-Length */
|
---|
| 1711 | if (length < 0)
|
---|
| 1712 | break;
|
---|
| 1713 |
|
---|
| 1714 | if (strncmp(test, "cgi-bin", 7) == 0) {
|
---|
| 1715 | if(test[7] == '/' && test[8] == 0)
|
---|
| 1716 | goto FORBIDDEN; // protect listing cgi-bin/
|
---|
| 1717 | sendCgi(url, prequest, length, cookie, content_type);
|
---|
| 1718 | } else {
|
---|
| 1719 | if (prequest != request_GET)
|
---|
| 1720 | sendHeaders(HTTP_NOT_IMPLEMENTED);
|
---|
| 1721 | else {
|
---|
| 1722 | #endif /* CONFIG_FEATURE_HTTPD_CGI */
|
---|
| 1723 | if(purl[-1] == '/')
|
---|
| 1724 | strcpy(purl, "index.html");
|
---|
| 1725 | if ( stat(test, &sb ) == 0 ) {
|
---|
| 1726 | config->ContentLength = sb.st_size;
|
---|
| 1727 | config->last_mod = sb.st_mtime;
|
---|
| 1728 | }
|
---|
| 1729 | sendFile(test);
|
---|
| 1730 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1731 | /* unset if non inetd looped */
|
---|
| 1732 | config->ContentLength = -1;
|
---|
| 1733 | #endif
|
---|
| 1734 |
|
---|
| 1735 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1736 | }
|
---|
| 1737 | }
|
---|
| 1738 | #endif
|
---|
| 1739 |
|
---|
| 1740 | } while (0);
|
---|
| 1741 |
|
---|
| 1742 |
|
---|
| 1743 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1744 | /* from inetd don`t looping: freeing, closing automatic from exit always */
|
---|
| 1745 | # if DEBUG
|
---|
| 1746 | fprintf(stderr, "closing socket\n");
|
---|
| 1747 | # endif
|
---|
| 1748 | # ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1749 | free(cookie);
|
---|
| 1750 | free(content_type);
|
---|
| 1751 | free(config->referer);
|
---|
| 1752 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1753 | free(config->remoteuser);
|
---|
| 1754 | #endif
|
---|
| 1755 | # endif
|
---|
| 1756 | #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
|
---|
| 1757 | shutdown(a_c_w, SHUT_WR);
|
---|
| 1758 |
|
---|
| 1759 | /* Properly wait for remote to closed */
|
---|
| 1760 | FD_ZERO (&s_fd) ;
|
---|
| 1761 | FD_SET (a_c_r, &s_fd) ;
|
---|
| 1762 |
|
---|
| 1763 | do {
|
---|
| 1764 | tv.tv_sec = 2 ;
|
---|
| 1765 | tv.tv_usec = 0 ;
|
---|
| 1766 | retval = select (a_c_r + 1, &s_fd, NULL, NULL, &tv);
|
---|
| 1767 | } while (retval > 0 && (read (a_c_r, buf, sizeof (config->buf)) > 0));
|
---|
| 1768 |
|
---|
| 1769 | shutdown(a_c_r, SHUT_RD);
|
---|
| 1770 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1771 | close(config->accepted_socket);
|
---|
| 1772 | #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
|
---|
| 1773 | }
|
---|
| 1774 |
|
---|
| 1775 | /****************************************************************************
|
---|
| 1776 | *
|
---|
| 1777 | > $Function: miniHttpd()
|
---|
| 1778 | *
|
---|
| 1779 | * $Description: The main http server function.
|
---|
| 1780 | *
|
---|
| 1781 | * Given an open socket fildes, listen for new connections and farm out
|
---|
| 1782 | * the processing as a forked process.
|
---|
| 1783 | *
|
---|
| 1784 | * $Parameters:
|
---|
| 1785 | * (int) server. . . The server socket fildes.
|
---|
| 1786 | *
|
---|
| 1787 | * $Return: (int) . . . . Always 0.
|
---|
| 1788 | *
|
---|
| 1789 | ****************************************************************************/
|
---|
| 1790 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1791 | static int miniHttpd(int server)
|
---|
| 1792 | {
|
---|
| 1793 | fd_set readfd, portfd;
|
---|
| 1794 |
|
---|
| 1795 | FD_ZERO(&portfd);
|
---|
| 1796 | FD_SET(server, &portfd);
|
---|
| 1797 |
|
---|
| 1798 | /* copy the ports we are watching to the readfd set */
|
---|
| 1799 | while (1) {
|
---|
| 1800 | readfd = portfd;
|
---|
| 1801 |
|
---|
| 1802 | /* Now wait INDEFINITELY on the set of sockets! */
|
---|
| 1803 | if (select(server + 1, &readfd, 0, 0, 0) > 0) {
|
---|
| 1804 | if (FD_ISSET(server, &readfd)) {
|
---|
| 1805 | int on;
|
---|
| 1806 | struct sockaddr_in fromAddr;
|
---|
| 1807 |
|
---|
| 1808 | socklen_t fromAddrLen = sizeof(fromAddr);
|
---|
| 1809 | int s = accept(server,
|
---|
| 1810 | (struct sockaddr *)&fromAddr, &fromAddrLen);
|
---|
| 1811 |
|
---|
| 1812 | if (s < 0) {
|
---|
| 1813 | continue;
|
---|
| 1814 | }
|
---|
| 1815 | config->accepted_socket = s;
|
---|
| 1816 | config->rmt_ip = ntohl(fromAddr.sin_addr.s_addr);
|
---|
| 1817 | #if defined(CONFIG_FEATURE_HTTPD_CGI) || DEBUG
|
---|
| 1818 | sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
|
---|
| 1819 | (unsigned char)(config->rmt_ip >> 24),
|
---|
| 1820 | (unsigned char)(config->rmt_ip >> 16),
|
---|
| 1821 | (unsigned char)(config->rmt_ip >> 8),
|
---|
| 1822 | config->rmt_ip & 0xff);
|
---|
| 1823 | config->port = ntohs(fromAddr.sin_port);
|
---|
| 1824 | #if DEBUG
|
---|
| 1825 | bb_error_msg("connection from IP=%s, port %u\n",
|
---|
| 1826 | config->rmt_ip_str, config->port);
|
---|
| 1827 | #endif
|
---|
| 1828 | #endif /* CONFIG_FEATURE_HTTPD_CGI */
|
---|
| 1829 |
|
---|
| 1830 | /* set the KEEPALIVE option to cull dead connections */
|
---|
| 1831 | on = 1;
|
---|
| 1832 | setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof (on));
|
---|
| 1833 |
|
---|
| 1834 | #if !DEBUG
|
---|
| 1835 | if (fork() == 0)
|
---|
| 1836 | #endif
|
---|
| 1837 | {
|
---|
| 1838 | /* This is the spawned thread */
|
---|
| 1839 | #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
|
---|
| 1840 | /* protect reload config, may be confuse checking */
|
---|
| 1841 | signal(SIGHUP, SIG_IGN);
|
---|
| 1842 | #endif
|
---|
| 1843 | handleIncoming();
|
---|
| 1844 | #if !DEBUG
|
---|
| 1845 | exit(0);
|
---|
| 1846 | #endif
|
---|
| 1847 | }
|
---|
| 1848 | close(s);
|
---|
| 1849 | }
|
---|
| 1850 | }
|
---|
| 1851 | } // while (1)
|
---|
| 1852 | return 0;
|
---|
| 1853 | }
|
---|
| 1854 |
|
---|
| 1855 | #else
|
---|
| 1856 | /* from inetd */
|
---|
| 1857 |
|
---|
| 1858 | static int miniHttpd(void)
|
---|
| 1859 | {
|
---|
| 1860 | struct sockaddr_in fromAddrLen;
|
---|
| 1861 | socklen_t sinlen = sizeof (struct sockaddr_in);
|
---|
| 1862 |
|
---|
| 1863 | getpeername (0, (struct sockaddr *)&fromAddrLen, &sinlen);
|
---|
| 1864 | config->rmt_ip = ntohl(fromAddrLen.sin_addr.s_addr);
|
---|
| 1865 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 1866 | sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
|
---|
| 1867 | (unsigned char)(config->rmt_ip >> 24),
|
---|
| 1868 | (unsigned char)(config->rmt_ip >> 16),
|
---|
| 1869 | (unsigned char)(config->rmt_ip >> 8),
|
---|
| 1870 | config->rmt_ip & 0xff);
|
---|
| 1871 | #endif
|
---|
| 1872 | config->port = ntohs(fromAddrLen.sin_port);
|
---|
| 1873 | handleIncoming();
|
---|
| 1874 | return 0;
|
---|
| 1875 | }
|
---|
| 1876 | #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
|
---|
| 1877 |
|
---|
| 1878 | #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
|
---|
| 1879 | static void sighup_handler(int sig)
|
---|
| 1880 | {
|
---|
| 1881 | /* set and reset */
|
---|
| 1882 | struct sigaction sa;
|
---|
| 1883 |
|
---|
| 1884 | parse_conf(default_path_httpd_conf,
|
---|
| 1885 | sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
|
---|
| 1886 | sa.sa_handler = sighup_handler;
|
---|
| 1887 | sigemptyset(&sa.sa_mask);
|
---|
| 1888 | sa.sa_flags = SA_RESTART;
|
---|
| 1889 | sigaction(SIGHUP, &sa, NULL);
|
---|
| 1890 | }
|
---|
| 1891 | #endif
|
---|
| 1892 |
|
---|
| 1893 | enum httpd_opts_nums {
|
---|
| 1894 | c_opt_config_file = 0,
|
---|
| 1895 | d_opt_decode_url,
|
---|
| 1896 | h_opt_home_httpd,
|
---|
| 1897 | USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
|
---|
| 1898 | USE_FEATURE_HTTPD_BASIC_AUTH(r_opt_realm,)
|
---|
| 1899 | USE_FEATURE_HTTPD_AUTH_MD5(m_opt_md5,)
|
---|
| 1900 | USE_FEATURE_HTTPD_SETUID(u_opt_setuid,)
|
---|
| 1901 | USE_FEATURE_HTTPD_WITHOUT_INETD(p_opt_port,)
|
---|
| 1902 | };
|
---|
| 1903 |
|
---|
| 1904 | static const char httpd_opts[]="c:d:h:"
|
---|
| 1905 | USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
|
---|
| 1906 | USE_FEATURE_HTTPD_BASIC_AUTH("r:")
|
---|
| 1907 | USE_FEATURE_HTTPD_AUTH_MD5("m:")
|
---|
| 1908 | USE_FEATURE_HTTPD_SETUID("u:")
|
---|
| 1909 | USE_FEATURE_HTTPD_WITHOUT_INETD("p:");
|
---|
| 1910 |
|
---|
| 1911 | #define OPT_CONFIG_FILE (1<<c_opt_config_file)
|
---|
| 1912 | #define OPT_DECODE_URL (1<<d_opt_decode_url)
|
---|
| 1913 | #define OPT_HOME_HTTPD (1<<h_opt_home_httpd)
|
---|
| 1914 |
|
---|
| 1915 | #define OPT_ENCODE_URL USE_FEATURE_HTTPD_ENCODE_URL_STR((1<<e_opt_encode_url)) \
|
---|
| 1916 | SKIP_FEATURE_HTTPD_ENCODE_URL_STR(0)
|
---|
| 1917 |
|
---|
| 1918 | #define OPT_REALM USE_FEATURE_HTTPD_BASIC_AUTH((1<<r_opt_realm)) \
|
---|
| 1919 | SKIP_FEATURE_HTTPD_BASIC_AUTH(0)
|
---|
| 1920 |
|
---|
| 1921 | #define OPT_MD5 USE_FEATURE_HTTPD_AUTH_MD5((1<<m_opt_md5)) \
|
---|
| 1922 | SKIP_FEATURE_HTTPD_AUTH_MD5(0)
|
---|
| 1923 |
|
---|
| 1924 | #define OPT_SETUID USE_FEATURE_HTTPD_SETUID((1<<u_opt_setuid)) \
|
---|
| 1925 | SKIP_FEATURE_HTTPD_SETUID(0)
|
---|
| 1926 |
|
---|
| 1927 | #define OPT_PORT USE_FEATURE_HTTPD_WITHOUT_INETD((1<<p_opt_port)) \
|
---|
| 1928 | SKIP_FEATURE_HTTPD_WITHOUT_INETD(0)
|
---|
| 1929 |
|
---|
| 1930 |
|
---|
| 1931 | int httpd_main(int argc, char *argv[])
|
---|
| 1932 | {
|
---|
| 1933 | unsigned long opt;
|
---|
| 1934 | const char *home_httpd = home;
|
---|
| 1935 | char *url_for_decode;
|
---|
| 1936 | USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
|
---|
| 1937 | USE_FEATURE_HTTPD_WITHOUT_INETD(const char *s_port;)
|
---|
| 1938 | USE_FEATURE_HTTPD_WITHOUT_INETD(int server;)
|
---|
| 1939 |
|
---|
| 1940 | USE_FEATURE_HTTPD_SETUID(const char *s_uid;)
|
---|
| 1941 | USE_FEATURE_HTTPD_SETUID(long uid = -1;)
|
---|
| 1942 |
|
---|
| 1943 | USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
|
---|
| 1944 |
|
---|
| 1945 | config = xcalloc(1, sizeof(*config));
|
---|
| 1946 | #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
|
---|
| 1947 | config->realm = "Web Server Authentication";
|
---|
| 1948 | #endif
|
---|
| 1949 |
|
---|
| 1950 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1951 | config->port = 80;
|
---|
| 1952 | #endif
|
---|
| 1953 |
|
---|
| 1954 | config->ContentLength = -1;
|
---|
| 1955 |
|
---|
| 1956 | opt = bb_getopt_ulflags(argc, argv, httpd_opts,
|
---|
| 1957 | &(config->configFile), &url_for_decode, &home_httpd
|
---|
| 1958 | USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
|
---|
| 1959 | USE_FEATURE_HTTPD_BASIC_AUTH(, &(config->realm))
|
---|
| 1960 | USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
|
---|
| 1961 | USE_FEATURE_HTTPD_SETUID(, &s_uid)
|
---|
| 1962 | USE_FEATURE_HTTPD_WITHOUT_INETD(, &s_port)
|
---|
| 1963 | );
|
---|
| 1964 |
|
---|
| 1965 | if(opt & OPT_DECODE_URL) {
|
---|
| 1966 | printf("%s", decodeString(url_for_decode, 1));
|
---|
| 1967 | return 0;
|
---|
| 1968 | }
|
---|
| 1969 | #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
|
---|
| 1970 | if(opt & OPT_ENCODE_URL) {
|
---|
| 1971 | printf("%s", encodeString(url_for_encode));
|
---|
| 1972 | return 0;
|
---|
| 1973 | }
|
---|
| 1974 | #endif
|
---|
| 1975 | #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
|
---|
| 1976 | if(opt & OPT_MD5) {
|
---|
| 1977 | printf("%s\n", pw_encrypt(pass, "$1$"));
|
---|
| 1978 | return 0;
|
---|
| 1979 | }
|
---|
| 1980 | #endif
|
---|
| 1981 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1982 | if(opt & OPT_PORT)
|
---|
| 1983 | config->port = bb_xgetlarg(s_port, 10, 1, 0xffff);
|
---|
| 1984 | #ifdef CONFIG_FEATURE_HTTPD_SETUID
|
---|
| 1985 | if(opt & OPT_SETUID) {
|
---|
| 1986 | char *e;
|
---|
| 1987 |
|
---|
| 1988 | uid = strtol(s_uid, &e, 0);
|
---|
| 1989 | if(*e != '\0') {
|
---|
| 1990 | /* not integer */
|
---|
| 1991 | uid = bb_xgetpwnam(s_uid);
|
---|
| 1992 | }
|
---|
| 1993 | }
|
---|
| 1994 | #endif
|
---|
| 1995 | #endif
|
---|
| 1996 |
|
---|
| 1997 | bb_xchdir(home_httpd);
|
---|
| 1998 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 1999 | server = openServer();
|
---|
| 2000 | # ifdef CONFIG_FEATURE_HTTPD_SETUID
|
---|
| 2001 | /* drop privileges */
|
---|
| 2002 | if(uid > 0)
|
---|
| 2003 | setuid(uid);
|
---|
| 2004 | # endif
|
---|
| 2005 | #endif
|
---|
| 2006 |
|
---|
| 2007 | #ifdef CONFIG_FEATURE_HTTPD_CGI
|
---|
| 2008 | {
|
---|
| 2009 | char *p = getenv("PATH");
|
---|
| 2010 | if(p) {
|
---|
| 2011 | p = bb_xstrdup(p);
|
---|
| 2012 | }
|
---|
| 2013 | clearenv();
|
---|
| 2014 | if(p)
|
---|
| 2015 | setenv("PATH", p, 1);
|
---|
| 2016 | # ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 2017 | addEnvPort("SERVER");
|
---|
| 2018 | # endif
|
---|
| 2019 | }
|
---|
| 2020 | #endif
|
---|
| 2021 |
|
---|
| 2022 | #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
|
---|
| 2023 | sighup_handler(0);
|
---|
| 2024 | #else
|
---|
| 2025 | parse_conf(default_path_httpd_conf, FIRST_PARSE);
|
---|
| 2026 | #endif
|
---|
| 2027 |
|
---|
| 2028 | #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
|
---|
| 2029 | # if !DEBUG
|
---|
| 2030 | bb_xdaemon(1, 0); /* don`t change curent directory */
|
---|
| 2031 | # endif
|
---|
| 2032 | return miniHttpd(server);
|
---|
| 2033 | #else
|
---|
| 2034 | return miniHttpd();
|
---|
| 2035 | #endif
|
---|
| 2036 | }
|
---|