/*
* httpd implementation for busybox
*
- * Copyright (C) 2002 Glenn Engel <glenne@engel.org>
+ * Copyright (C) 2002,2003 Glenn Engel <glenne@engel.org>
+ * Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru>
*
+ * simplify patch stolen from libbb without using strdup
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
*****************************************************************************
*
- * Typical usage:
- * cd /var/www
- * httpd
- * This is equivalent to
- * cd /var/www
- * httpd -p 80 -c /etc/httpd.conf -r "Web Server Authentication"
+ * Typical usage:
+ * for non root user
+ * httpd -p 8080 -h $HOME/public_html
+ * or for daemon start from rc script with uid=0:
+ * httpd -u www
+ * This is equivalent if www user have uid=80 to
+ * httpd -p 80 -u 80 -h /www -c /etc/httpd.conf -r "Web Server Authentication"
+ *
*
* When a url contains "cgi-bin" it is assumed to be a cgi script. The
* server changes directory to the location of the script and executes it
- * after setting QUERY_STRING and other environment variables. If url args
- * are included in the url or as a post, the args are placed into decoded
- * environment variables. e.g. /cgi-bin/setup?foo=Hello%20World will set
- * the $CGI_foo environment variable to "Hello World".
+ * after setting QUERY_STRING and other environment variables.
*
* The server can also be invoked as a url arg decoder and html text encoder
* as follows:
* foo=`httpd -d $foo` # decode "Hello%20World" as "Hello World"
* bar=`httpd -e "<Hello World>"` # encode as "<Hello World>"
+ * Note that url encoding for arguments is not the same as html encoding for
+ * presenation. -d decodes a url-encoded argument while -e encodes in html
+ * for page display.
*
* httpd.conf has the following format:
-
-ip:10.10. # Allow any address that begins with 10.10.
-ip:172.20. # Allow 172.20.x.x
-ip:127.0.0.1 # Allow local loopback connections
-/cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin
-/:admin:setup # Require user admin, pwd setup on urls starting with /
+ *
+ * A:172.20. # Allow address from 172.20.0.0/16
+ * A:10.0.0.0/25 # Allow any address from 10.0.0.0-10.0.0.127
+ * A:10.0.0.0/255.255.255.128 # Allow any address that previous set
+ * A:127.0.0.1 # Allow local loopback connections
+ * D:* # Deny from other IP connections
+ * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
+ * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
+ * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
+ * .au:audio/basic # additional mime type for audio.au files
+ *
+ * A/D may be as a/d or allow/deny - first char case unsensitive
+ * Deny IP rules take precedence over allow rules.
+ *
+ *
+ * The Deny/Allow IP logic:
+ *
+ * - Default is to allow all. No addresses are denied unless
+ * denied with a D: rule.
+ * - Order of Deny/Allow rules is significant
+ * - Deny rules take precedence over allow rules.
+ * - If a deny all rule (D:*) is used it acts as a catch-all for unmatched
+ * addresses.
+ * - Specification of Allow all (A:*) is a no-op
+ *
+ * Example:
+ * 1. Allow only specified addresses
+ * A:172.20 # Allow any address that begins with 172.20.
+ * A:10.10. # Allow any address that begins with 10.10.
+ * A:127.0.0.1 # Allow local loopback connections
+ * D:* # Deny from other IP connections
+ *
+ * 2. Only deny specified addresses
+ * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
+ * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
+ * A:* # (optional line added for clarity)
+ *
+ * If a sub directory contains a config file it is parsed and merged with
+ * any existing settings as if it was appended to the original configuration.
+ *
+ * subdir paths are relative to the containing subdir and thus cannot
+ * affect the parent rules.
+ *
+ * Note that since the sub dir is parsed in the forked thread servicing the
+ * subdir http request, any merge is discarded when the process exits. As a
+ * result, the subdir settings only have a lifetime of a single request.
+ *
+ *
+ * If -c is not set, an attempt will be made to open the default
+ * root configuration file. If -c is set and the file is not found, the
+ * server exits with an error.
+ *
+*/
+
- *
- * To open up the server:
- * ip:* # Allow any IP address
- * /:* # no password required for urls starting with / (all)
- *
- * Processing of the file stops on the first sucessful match. If the file
- * is not found, the server is assumed to be wide open.
- *
- *****************************************************************************
- *
- * Desired enhancements:
- * cache httpd.conf
- * support tinylogin
- *
- */
#include <stdio.h>
#include <ctype.h> /* for isspace */
-#include <stdarg.h> /* for varargs */
-#include <string.h> /* for strerror */
+#include <string.h>
#include <stdlib.h> /* for malloc */
#include <time.h>
-#include <errno.h>
#include <unistd.h> /* for close */
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h> /* for connect and socket*/
#include <netinet/in.h> /* for sockaddr_in */
-#include <sys/types.h>
+#include <sys/time.h>
#include <sys/stat.h>
#include <sys/wait.h>
-#include <fcntl.h>
+#include <fcntl.h> /* for open modes */
+#include "busybox.h"
-static const char httpdVersion[] = "busybox httpd/1.13 3-Jan-2003";
-// #define DEBUG 1
-#ifndef HTTPD_STANDALONE
-#include <config.h>
-#include <busybox.h>
-// Note: xfuncs are not used because we want the server to keep running
-// if something bad happens due to a malformed user request.
-// As a result, all memory allocation is checked rigorously
+static const char httpdVersion[] = "busybox httpd/1.34 2-Oct-2003";
+static const char default_path_httpd_conf[] = "/etc";
+static const char httpd_conf[] = "httpd.conf";
+static const char home[] = "./";
+
+#ifdef CONFIG_LFS
+# define cont_l_fmt "%lld"
#else
-/* standalone */
+# define cont_l_fmt "%ld"
+#endif
+
+// Note: bussybox xfuncs are not used because we want the server to keep running
+// if something bad happens due to a malformed user request.
+// As a result, all memory allocation after daemonize
+// is checked rigorously
+
+//#define DEBUG 1
+
+/* Configure options, disabled by default as custom httpd feature */
+
+/* disabled as optional features */
+//#define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+//#define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
+//#define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+//#define CONFIG_FEATURE_HTTPD_SETUID
+//#define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+
+/* If set, use this server from internet superserver only */
+//#define CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+
+/* You can use this server as standalone, require libbb.a for linking */
+//#define HTTPD_STANDALONE
+
+/* Config options, disable this for do very small module */
+//#define CONFIG_FEATURE_HTTPD_CGI
+//#define CONFIG_FEATURE_HTTPD_BASIC_AUTH
+//#define CONFIG_FEATURE_HTTPD_AUTH_MD5
+
+#ifdef HTTPD_STANDALONE
+/* standalone, enable all features */
+#undef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+/* unset config option for remove warning as redefined */
+#undef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+#undef CONFIG_FEATURE_HTTPD_AUTH_MD5
+#undef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+#undef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
+#undef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+#undef CONFIG_FEATURE_HTTPD_CGI
+#undef CONFIG_FEATURE_HTTPD_SETUID
+#undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+/* enable all features now */
#define CONFIG_FEATURE_HTTPD_BASIC_AUTH
-void show_usage()
+#define CONFIG_FEATURE_HTTPD_AUTH_MD5
+#define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+#define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
+#define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+#define CONFIG_FEATURE_HTTPD_CGI
+#define CONFIG_FEATURE_HTTPD_SETUID
+#define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+
+/* require from libbb.a for linking */
+const char *bb_applet_name = "httpd";
+
+void bb_show_usage(void)
{
- fprintf(stderr,"Usage: httpd [-p <port>] [-c configFile] [-d/-e <string>] [-r realm]\n");
+ fprintf(stderr, "Usage: %s [-p <port>] [-c configFile] [-d/-e <string>] "
+ "[-r realm] [-u user] [-h homedir]\n", bb_applet_name);
+ exit(1);
}
#endif
-/* minimal global vars for busybox */
-#ifndef ENVSIZE
-#define ENVSIZE 50
+#ifdef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+#undef CONFIG_FEATURE_HTTPD_SETUID /* use inetd user.group config settings */
+#undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP /* so is not daemon */
+/* inetd set stderr to accepted socket and we can`t true see debug messages */
+#undef DEBUG
+#endif
+
+#define MAX_MEMORY_BUFF 8192 /* IO buffer */
+
+typedef struct HT_ACCESS {
+ char *after_colon;
+ struct HT_ACCESS *next;
+ char before_colon[1]; /* really bigger, must last */
+} Htaccess;
+
+typedef struct HT_ACCESS_IP {
+ unsigned int ip;
+ unsigned int mask;
+ int allow_deny;
+ struct HT_ACCESS_IP *next;
+} Htaccess_IP;
+
+typedef struct
+{
+ char buf[MAX_MEMORY_BUFF];
+
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ const char *realm;
+ char *remoteuser;
+#endif
+
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ char *referer;
+#endif
+
+ const char *configFile;
+
+ unsigned int rmt_ip;
+#if defined(CONFIG_FEATURE_HTTPD_CGI) || defined(DEBUG)
+ char rmt_ip_str[16]; /* for set env REMOTE_ADDR */
+#endif
+ unsigned port; /* server initial port and for
+ set env REMOTE_PORT */
+
+ const char *found_mime_type;
+ off_t ContentLength; /* -1 - unknown */
+ time_t last_mod;
+
+ Htaccess_IP *ip_a_d; /* config allow/deny lines */
+ int flg_deny_all;
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ Htaccess *auth; /* config user:password lines */
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ Htaccess *mime_a; /* config mime types */
+#endif
+
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ int accepted_socket;
+#define a_c_r config->accepted_socket
+#define a_c_w config->accepted_socket
+ int debugHttpd; /* if seted, don`t stay daemon */
+#else
+#define a_c_r 0
+#define a_c_w 1
#endif
-int debugHttpd;
-static char **envp;
-static int envCount;
-static char *realm = "Web Server Authentication";
-static char *configFile;
+} HttpdConfig;
+
+static HttpdConfig *config;
+
+static const char request_GET[] = "GET"; /* size algorithic optimize */
static const char* const suffixTable [] = {
+/* Warning: shorted equalent suffix in one line must be first */
".htm.html", "text/html",
".jpg.jpeg", "image/jpeg",
".gif", "image/gif",
".png", "image/png",
".txt.h.c.cc.cpp", "text/plain",
- 0,0
+ ".css", "text/css",
+ ".wav", "audio/wav",
+ ".avi", "video/x-msvideo",
+ ".qt.mov", "video/quicktime",
+ ".mpe.mpeg", "video/mpeg",
+ ".mid.midi", "audio/midi",
+ ".mp3", "audio/mpeg",
+#if 0 /* unpopular */
+ ".au", "audio/basic",
+ ".pac", "application/x-ns-proxy-autoconfig",
+ ".vrml.wrl", "model/vrml",
+#endif
+ 0, "application/octet-stream" /* default */
};
typedef enum
HTTP_OK = 200,
HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
HTTP_NOT_FOUND = 404,
+ HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
+ HTTP_BAD_REQUEST = 400, /* malformed syntax */
+ HTTP_FORBIDDEN = 403,
HTTP_INTERNAL_SERVER_ERROR = 500,
- HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
- HTTP_BAD_REQUEST = 400, /* malformed syntax */
#if 0 /* future use */
HTTP_CONTINUE = 100,
HTTP_SWITCHING_PROTOCOLS = 101,
HTTP_MOVED_TEMPORARILY = 302,
HTTP_NOT_MODIFIED = 304,
HTTP_PAYMENT_REQUIRED = 402,
- HTTP_FORBIDDEN = 403,
HTTP_BAD_GATEWAY = 502,
HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
HTTP_RESPONSE_SETSIZE=0xffffffff
static const HttpEnumString httpResponseNames[] = {
{ HTTP_OK, "OK" },
- { HTTP_NOT_IMPLEMENTED, "Not Implemented",
+ { HTTP_NOT_IMPLEMENTED, "Not Implemented",
"The requested method is not recognized by this server." },
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
{ HTTP_UNAUTHORIZED, "Unauthorized", "" },
+#endif
{ HTTP_NOT_FOUND, "Not Found",
"The requested URL was not found on this server." },
- { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error"
+ { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
+ { HTTP_FORBIDDEN, "Forbidden", "" },
+ { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
"Internal Server Error" },
- { HTTP_BAD_REQUEST, "Bad Request" ,
- "Unsupported method.\n" },
-#if 0
+#if 0 /* not implemented */
{ HTTP_CREATED, "Created" },
{ HTTP_ACCEPTED, "Accepted" },
{ HTTP_NO_CONTENT, "No Content" },
{ HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
{ HTTP_MOVED_TEMPORARILY, "Moved Temporarily" },
{ HTTP_NOT_MODIFIED, "Not Modified" },
- { HTTP_FORBIDDEN, "Forbidden", "" },
{ HTTP_BAD_GATEWAY, "Bad Gateway", "" },
{ HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
#endif
};
+
+static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
+static const char Content_length[] = "Content-length:";
+
+
+static int
+scan_ip (const char **ep, unsigned int *ip, unsigned char endc)
+{
+ const char *p = *ep;
+ int auto_mask = 8;
+ int j;
+
+ *ip = 0;
+ for (j = 0; j < 4; j++) {
+ unsigned int octet;
+
+ if ((*p < '0' || *p > '9') && (*p != '/' || j == 0) && *p != 0)
+ return -auto_mask;
+ octet = 0;
+ while (*p >= '0' && *p <= '9') {
+ octet *= 10;
+ octet += *p - '0';
+ if (octet > 255)
+ return -auto_mask;
+ p++;
+ }
+ if (*p == '.')
+ p++;
+ if (*p != '/' && *p != 0)
+ auto_mask += 8;
+ *ip = ((*ip) << 8) | octet;
+ }
+ if (*p != 0) {
+ if (*p != endc)
+ return -auto_mask;
+ p++;
+ if(*p == 0)
+ return -auto_mask;
+ }
+ *ep = p;
+ return auto_mask;
+}
+
+static int
+scan_ip_mask (const char *ipm, unsigned int *ip, unsigned int *mask)
+{
+ int i;
+ unsigned int msk;
+
+ i = scan_ip(&ipm, ip, '/');
+ if(i < 0)
+ return i;
+ if(*ipm) {
+ const char *p = ipm;
+
+ i = 0;
+ while (*p) {
+ if (*p < '0' || *p > '9') {
+ if (*p == '.') {
+ i = scan_ip (&ipm, mask, 0);
+ return i != 32;
+ }
+ return -1;
+ }
+ i *= 10;
+ i += *p - '0';
+ p++;
+ }
+ }
+ if (i > 32 || i < 0)
+ return -1;
+ msk = 0x80000000;
+ *mask = 0;
+ while (i > 0) {
+ *mask |= msk;
+ msk >>= 1;
+ i--;
+ }
+ return 0;
+}
+
+#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
+static void free_config_lines(Htaccess **pprev)
+{
+ Htaccess *prev = *pprev;
+
+ while( prev ) {
+ Htaccess *cur = prev;
+
+ prev = cur->next;
+ free(cur);
+ }
+ *pprev = NULL;
+}
+#endif
+
+/* flag */
+#define FIRST_PARSE 0
+#define SUBDIR_PARSE 1
+#define SIGNALED_PARSE 2
+#define FIND_FROM_HTTPD_ROOT 3
+/****************************************************************************
+ *
+ > $Function: parse_conf()
+ *
+ * $Description: parse configuration file into in-memory linked list.
+ *
+ * The first non-white character is examined to determine if the config line
+ * is one of the following:
+ * .ext:mime/type # new mime type not compiled into httpd
+ * [adAD]:from # ip address allow/deny, * for wildcard
+ * /path:user:pass # username/password
+ *
+ * Any previous IP rules are discarded.
+ * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
+ * are also discarded. That is, previous settings are retained if flag is
+ * SUBDIR_PARSE.
+ *
+ * $Parameters:
+ * (const char *) path . . null for ip address checks, path for password
+ * checks.
+ * (int) flag . . . . . . the source of the parse request.
+ *
+ * $Return: (None)
+ *
+ ****************************************************************************/
+static void parse_conf(const char *path, int flag)
+{
+ FILE *f;
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ Htaccess *prev, *cur;
+#elif CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ Htaccess *cur;
+#endif
+
+ const char *cf = config->configFile;
+ char buf[160];
+ char *p0 = NULL;
+ char *c, *p;
+
+ /* free previous ip setup if present */
+ Htaccess_IP *pip = config->ip_a_d;
+
+ while( pip ) {
+ Htaccess_IP *cur_ipl = pip;
+
+ pip = cur_ipl->next;
+ free(cur_ipl);
+ }
+ config->ip_a_d = NULL;
+
+ config->flg_deny_all = 0;
+
+#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
+ /* retain previous auth and mime config only for subdir parse */
+ if(flag != SUBDIR_PARSE) {
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ free_config_lines(&config->auth);
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ free_config_lines(&config->mime_a);
+#endif
+ }
+#endif
+
+ if(flag == SUBDIR_PARSE || cf == NULL) {
+ cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
+ if(cf == NULL) {
+ if(flag == FIRST_PARSE)
+ bb_error_msg_and_die(bb_msg_memory_exhausted);
+ return;
+ }
+ sprintf((char *)cf, "%s/%s", path, httpd_conf);
+ }
+
+ while((f = fopen(cf, "r")) == NULL) {
+ if(flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
+ /* config file not found, no changes to config */
+ return;
+ }
+ if(config->configFile && flag == FIRST_PARSE) /* if -c option given */
+ bb_perror_msg_and_die("%s", cf);
+ flag = FIND_FROM_HTTPD_ROOT;
+ cf = httpd_conf;
+ }
+
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ prev = config->auth;
+#endif
+ /* This could stand some work */
+ while ( (p0 = fgets(buf, sizeof(buf), f)) != NULL) {
+ c = NULL;
+ for(p = p0; *p0 != 0 && *p0 != '#'; p0++) {
+ if(!isspace(*p0)) {
+ *p++ = *p0;
+ if(*p0 == ':' && c == NULL)
+ c = p;
+ }
+ }
+ *p = 0;
+
+ /* test for empty or strange line */
+ if (c == NULL || *c == 0)
+ continue;
+ p0 = buf;
+ if(*p0 == 'd')
+ *p0 = 'D';
+ if(*c == '*') {
+ if(*p0 == 'D') {
+ /* memorize deny all */
+ config->flg_deny_all++;
+ }
+ /* skip default other "word:*" config lines */
+ continue;
+ }
+
+ if(*p0 == 'a')
+ *p0 = 'A';
+ else if(*p0 != 'D' && *p0 != 'A'
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ && *p0 != '/'
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ && *p0 != '.'
+#endif
+ )
+ continue;
+ if(*p0 == 'A' || *p0 == 'D') {
+ /* storing current config IP line */
+ pip = calloc(1, sizeof(Htaccess_IP));
+ if(pip) {
+ if(scan_ip_mask (c, &(pip->ip), &(pip->mask))) {
+ /* syntax IP{/mask} error detected, protect all */
+ *p0 = 'D';
+ pip->mask = 0;
+ }
+ pip->allow_deny = *p0;
+ if(*p0 == 'D') {
+ /* Deny:form_IP move top */
+ pip->next = config->ip_a_d;
+ config->ip_a_d = pip;
+ } else {
+ /* add to bottom A:form_IP config line */
+ Htaccess_IP *prev_IP = config->ip_a_d;
+
+ if(prev_IP == NULL) {
+ config->ip_a_d = pip;
+ } else {
+ while(prev_IP->next)
+ prev_IP = prev_IP->next;
+ prev_IP->next = pip;
+ }
+ }
+ }
+ continue;
+ }
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ if(*p0 == '/') {
+ /* make full path from httpd root / curent_path / config_line_path */
+ cf = flag == SUBDIR_PARSE ? path : "";
+ p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
+ if(p0 == NULL)
+ continue;
+ c[-1] = 0;
+ sprintf(p0, "/%s%s", cf, buf);
+
+ /* another call bb_simplify_path */
+ cf = p = p0;
+
+ do {
+ if (*p == '/') {
+ if (*cf == '/') { /* skip duplicate (or initial) slash */
+ continue;
+ } else if (*cf == '.') {
+ if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
+ continue;
+ } else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
+ ++cf;
+ if (p > p0) {
+ while (*--p != '/'); /* omit previous dir */
+ }
+ continue;
+ }
+ }
+ }
+ *++p = *cf;
+ } while (*++cf);
+
+ if ((p == p0) || (*p != '/')) { /* not a trailing slash */
+ ++p; /* so keep last character */
+ }
+ *p = 0;
+ sprintf(p0, "%s:%s", p0, c);
+ }
+#endif
+
+#if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
+ /* storing current config line */
+ cur = calloc(1, sizeof(Htaccess) + strlen(p0));
+ if(cur) {
+ cf = strcpy(cur->before_colon, p0);
+ c = strchr(cf, ':');
+ *c++ = 0;
+ cur->after_colon = c;
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ if(*cf == '.') {
+ /* config .mime line move top for overwrite previous */
+ cur->next = config->mime_a;
+ config->mime_a = cur;
+ continue;
+ }
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ free(p0);
+ if(prev == NULL) {
+ /* first line */
+ config->auth = prev = cur;
+ } else {
+ /* sort path, if current lenght eq or bigger then move up */
+ Htaccess *prev_hti = config->auth;
+ int l = strlen(cf);
+ Htaccess *hti;
+
+ for(hti = prev_hti; hti; hti = hti->next) {
+ if(l >= strlen(hti->before_colon)) {
+ /* insert before hti */
+ cur->next = hti;
+ if(prev_hti != hti) {
+ prev_hti->next = cur;
+ } else {
+ /* insert as top */
+ config->auth = cur;
+ }
+ break;
+ }
+ if(prev_hti != hti)
+ prev_hti = prev_hti->next;
+ }
+ if(!hti) { /* not inserted, add to bottom */
+ prev->next = cur;
+ prev = cur;
+ }
+ }
+#endif
+ }
+#endif
+ }
+ fclose(f);
+}
+
+#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
/****************************************************************************
*
> $Function: encodeString()
/* take the simple route and encode everything */
/* could possibly scan once to get length. */
int len = strlen(string);
- char *out = (char*)malloc(len*5 +1);
+ char *out = malloc(len*5 +1);
char *p=out;
char ch;
+
if (!out) return "";
- while ((ch = *string++))
- {
+ while ((ch = *string++)) {
// very simple check for what to encode
if (isalnum(ch)) *p++ = ch;
- else p += sprintf(p,"&#%d", (unsigned char) ch);
+ else p += sprintf(p, "&#%d", (unsigned char) ch);
}
*p=0;
return out;
}
+#endif /* CONFIG_FEATURE_HTTPD_ENCODE_URL_STR */
/****************************************************************************
*
*
* $Parameters:
* (char *) string . . . The first string to decode.
+ * (int) flag . . . 1 if require decode '+' as ' ' for CGI
*
* $Return: (char *) . . . . A pointer to the decoded string (same as input).
*
* $Errors: None
*
****************************************************************************/
-static char *decodeString(char *string)
+static char *decodeString(char *orig, int flag_plus_to_space)
{
/* note that decoded string is always shorter than original */
- char *orig = string;
+ char *string = orig;
char *ptr = string;
+
while (*ptr)
{
- if (*ptr == '+') { *string++ = ' '; ptr++; }
+ if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
else if (*ptr != '%') *string++ = *ptr++;
- else
- {
+ else {
unsigned int value;
- sscanf(ptr+1,"%2X",&value);
+ sscanf(ptr+1, "%2X", &value);
*string++ = value;
ptr += 3;
}
}
+#ifdef CONFIG_FEATURE_HTTPD_CGI
/****************************************************************************
*
> $Function: addEnv()
* environment settings passed to the cgi execution script.
*
* $Parameters:
- * (char *) name . . . The environment variable name.
- * (char *) value . . The value to which the env variable is set.
+ * (char *) name_before_underline - The first part environment variable name.
+ * (char *) name_after_underline - The second part environment variable name.
+ * (char *) value . . The value to which the env variable is set.
*
- * $Return: (void)
+ * $Return: (void)
*
* $Errors: Silently returns if the env runs out of space to hold the new item
*
****************************************************************************/
-static void addEnv(const char *name, const char *value)
+static void addEnv(const char *name_before_underline,
+ const char *name_after_underline, const char *value)
{
- char *s;
- if (envCount >= ENVSIZE) return;
- if (!value) value = "";
- s=(char*)malloc(strlen(name)+strlen(value)+2);
- if (s)
- {
- sprintf(s,"%s=%s",name, value);
- envp[envCount++]=s;
- envp[envCount]=0;
+ char *s = NULL;
+ const char *underline;
+
+ if (!value)
+ value = "";
+ underline = *name_after_underline ? "_" : "";
+ asprintf(&s, "%s%s%s=%s", name_before_underline, underline,
+ name_after_underline, value);
+ if(s) {
+ putenv(s);
}
}
-/****************************************************************************
- *
- > $Function: addEnvCgi
- *
- * $Description: Create environment variables given a URL encoded arg list.
- * For each variable setting the URL encoded arg list, create a corresponding
- * environment variable. URL encoded arguments have the form
- * name1=value1&name2=value2&name3=value3
- *
- * $Parameters:
- * (char *) pargs . . . . A pointer to the URL encoded arguments.
- *
- * $Return: None
- *
- * $Errors: None
- *
- ****************************************************************************/
-static void addEnvCgi(const char *pargs)
+#if defined(CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV) || !defined(CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY)
+/* set environs SERVER_PORT and REMOTE_PORT */
+static void addEnvPort(const char *port_name)
{
- char *args;
- if (pargs==0) return;
-
- /* args are a list of name=value&name2=value2 sequences */
- args = strdup(pargs);
- while (args && *args)
- {
- char *sep;
- char *name=args;
- char *value=strchr(args,'=');
- char *cginame;
- if (!value) break;
- *value++=0;
- sep=strchr(value,'&');
- if (sep)
- {
- *sep=0;
- args=sep+1;
- }
- else
- {
- sep = value + strlen(value);
- args = 0; /* no more */
- }
- cginame=(char*)malloc(strlen(decodeString(name))+5);
- if (!cginame) break;
- sprintf(cginame,"CGI_%s",name);
- addEnv(cginame,decodeString(value));
- free(cginame);
- }
+ char buf[16];
+
+ sprintf(buf, "%u", config->port);
+ addEnv(port_name, "PORT", buf);
}
+#endif
+#endif /* CONFIG_FEATURE_HTTPD_CGI */
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
-static const unsigned char base64ToBin[] = {
- 255 /* ' ' */, 255 /* '!' */, 255 /* '"' */, 255 /* '#' */,
- 1 /* '$' */, 255 /* '%' */, 255 /* '&' */, 255 /* ''' */,
- 255 /* '(' */, 255 /* ')' */, 255 /* '*' */, 62 /* '+' */,
- 255 /* ',' */, 255 /* '-' */, 255 /* '.' */, 63 /* '/' */,
- 52 /* '0' */, 53 /* '1' */, 54 /* '2' */, 55 /* '3' */,
- 56 /* '4' */, 57 /* '5' */, 58 /* '6' */, 59 /* '7' */,
- 60 /* '8' */, 61 /* '9' */, 255 /* ':' */, 255 /* ';' */,
- 255 /* '<' */, 00 /* '=' */, 255 /* '>' */, 255 /* '?' */,
- 255 /* '@' */, 00 /* 'A' */, 01 /* 'B' */, 02 /* 'C' */,
- 03 /* 'D' */, 04 /* 'E' */, 05 /* 'F' */, 06 /* 'G' */,
- 7 /* 'H' */, 8 /* 'I' */, 9 /* 'J' */, 10 /* 'K' */,
- 11 /* 'L' */, 12 /* 'M' */, 13 /* 'N' */, 14 /* 'O' */,
- 15 /* 'P' */, 16 /* 'Q' */, 17 /* 'R' */, 18 /* 'S' */,
- 19 /* 'T' */, 20 /* 'U' */, 21 /* 'V' */, 22 /* 'W' */,
- 23 /* 'X' */, 24 /* 'Y' */, 25 /* 'Z' */, 255 /* '[' */,
- 255 /* '\' */, 255 /* ']' */, 255 /* '^' */, 255 /* '_' */,
- 255 /* '`' */, 26 /* 'a' */, 27 /* 'b' */, 28 /* 'c' */,
- 29 /* 'd' */, 30 /* 'e' */, 31 /* 'f' */, 32 /* 'g' */,
- 33 /* 'h' */, 34 /* 'i' */, 35 /* 'j' */, 36 /* 'k' */,
- 37 /* 'l' */, 38 /* 'm' */, 39 /* 'n' */, 40 /* 'o' */,
- 41 /* 'p' */, 42 /* 'q' */, 43 /* 'r' */, 44 /* 's' */,
- 45 /* 't' */, 46 /* 'u' */, 47 /* 'v' */, 48 /* 'w' */,
- 49 /* 'x' */, 50 /* 'y' */, 51 /* 'z' */, 255 /* '{' */,
- 255 /* '|' */, 255 /* '}' */, 255 /* '~' */, 255 /* '\7f' */
-};
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
/****************************************************************************
*
> $Function: decodeBase64()
* Since the decode always results in a shorter size than the input, it is
* OK to pass the input arg as an output arg.
*
- * $Parameters:
- * (void *) outData. . . Where to place the decoded data.
- * (size_t) outDataLen . The length of the output data string.
- * (void *) inData . . . A pointer to a base64 encoded string.
- * (size_t) inDataLen . The length of the input data string.
+ * $Parameter:
+ * (char *) Data . . . . A pointer to a base64 encoded string.
+ * Where to place the decoded data.
*
- * $Return: (char *) . . . . A pointer to the decoded string (same as input).
+ * $Return: void
*
* $Errors: None
*
****************************************************************************/
-static size_t decodeBase64(void *outData, size_t outDataLen,
- void *inData, size_t inDataLen)
+static void decodeBase64(char *Data)
{
- int i = 0;
- unsigned char *in = inData;
- unsigned char *out = outData;
+
+ const unsigned char *in = Data;
+ // The decoded size will be at most 3/4 the size of the encoded
unsigned long ch = 0;
- while (inDataLen && outDataLen)
- {
- unsigned char conv = 0;
- unsigned char newch;
-
- while (inDataLen)
- {
- inDataLen--;
- newch = *in++;
- if ((newch < '0') || (newch > 'z')) continue;
- conv = base64ToBin[newch - 32];
- if (conv == 255) continue;
- break;
- }
- ch = (ch << 6) | conv;
+ int i = 0;
+
+ while (*in) {
+ int t = *in++;
+
+ if(t >= '0' && t <= '9')
+ t = t - '0' + 52;
+ else if(t >= 'A' && t <= 'Z')
+ t = t - 'A';
+ else if(t >= 'a' && t <= 'z')
+ t = t - 'a' + 26;
+ else if(t == '+')
+ t = 62;
+ else if(t == '/')
+ t = 63;
+ else if(t == '=')
+ t = 0;
+ else
+ continue;
+
+ ch = (ch << 6) | t;
i++;
- if (i== 4)
- {
- if (outDataLen >= 3)
- {
- *(out++) = (unsigned char) (ch >> 16);
- *(out++) = (unsigned char) (ch >> 8);
- *(out++) = (unsigned char) ch;
- outDataLen-=3;
- }
-
- i = 0;
+ if (i == 4) {
+ *Data++ = (char) (ch >> 16);
+ *Data++ = (char) (ch >> 8);
+ *Data++ = (char) ch;
+ i = 0;
}
-
- if ((inDataLen == 0) && (i != 0))
- {
- /* error - non multiple of 4 chars on input */
- break;
- }
-
}
-
- /* return the actual number of chars in output array */
- return out-(unsigned char*) outData;
+ *Data = 0;
}
#endif
-/****************************************************************************
- *
- > $Function: perror_and_exit()
- *
- > $Description: A helper function to print an error and exit.
- *
- * $Parameters:
- * (const char *) msg . . . A 'context' message to include.
- *
- * $Return: None
- *
- * $Errors: None
- *
- ****************************************************************************/
-static void perror_exit(const char *msg)
-{
- perror(msg);
- exit(1);
-}
-
-
-/****************************************************************************
- *
- > $Function: strncmpi()
- *
- * $Description: compare two strings without regard to case.
- *
- * $Parameters:
- * (char *) a . . . . . The first string.
- * (char *) b . . . . . The second string.
- * (int) n . . . . . . The number of chars to compare.
- *
- * $Return: (int) . . . . . . 0 if strings equal. 1 if a>b, -1 if b < a.
- *
- * $Errors: None
- *
- ****************************************************************************/
-#define __toupper(c) ((('a' <= (c))&&((c) <= 'z')) ? ((c) - 'a' + 'A') : (c))
-#define __tolower(c) ((('A' <= (c))&&((c) <= 'Z')) ? ((c) - 'A' + 'a') : (c))
-static int strncmpi(const char *a, const char *b,int n)
-{
- char a1,b1;
- a1 = b1 = 0;
-
- while(n-- && ((a1 = *a++) != '\0') && ((b1 = *b++) != '\0'))
- {
- if(a1 == b1) continue; /* No need to convert */
- a1 = __tolower(a1);
- b1 = __tolower(b1);
- if(a1 != b1) break; /* No match, abort */
- }
- if (n>=0)
- {
- if(a1 > b1) return 1;
- if(a1 < b1) return -1;
- }
- return 0;
-}
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
/****************************************************************************
*
> $Function: openServer()
*
* $Description: create a listen server socket on the designated port.
*
- * $Parameters:
- * (int) port . . . The port to listen on for connections.
- *
* $Return: (int) . . . A connection socket. -1 for errors.
*
* $Errors: None
*
****************************************************************************/
-static int openServer(int port)
+static int openServer(void)
{
struct sockaddr_in lsocket;
int fd;
-
+
/* create the socket right now */
/* inet_addr() returns a value that is already in network order */
memset(&lsocket, 0, sizeof(lsocket));
lsocket.sin_family = AF_INET;
lsocket.sin_addr.s_addr = INADDR_ANY;
- lsocket.sin_port = htons(port) ;
+ lsocket.sin_port = htons(config->port) ;
fd = socket(AF_INET, SOCK_STREAM, 0);
- if (fd >= 0)
- {
+ if (fd >= 0) {
/* tell the OS it's OK to reuse a previous address even though */
/* it may still be in a close down state. Allows bind to succeed. */
- int one = 1;
+ int on = 1;
#ifdef SO_REUSEPORT
- setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (char*)&one, sizeof(one)) ;
+ setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *)&on, sizeof(on)) ;
#else
- setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&one, sizeof(one)) ;
+ setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)) ;
#endif
- if (bind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket)) == 0)
- {
+ if (bind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket)) == 0) {
listen(fd, 9);
signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
+ } else {
+ bb_perror_msg_and_die("bind");
}
- else
- {
- perror("failure to bind to server port");
- shutdown(fd,0);
- close(fd);
- fd = -1;
- }
- }
- else
- {
- fprintf(stderr,"httpd: unable to create socket \n");
- }
+ } else {
+ bb_perror_msg_and_die("create socket");
+ }
return fd;
}
-
-static int sendBuf(int s, char *buf, int len)
-{
- if (len == -1) len = strlen(buf);
- return send(s, buf, len, 0);
-}
+#endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
/****************************************************************************
*
* $Description: Create and send HTTP response headers.
* The arguments are combined and sent as one write operation. Note that
* IE will puke big-time if the headers are not sent in one packet and the
- * second packet is delayed for any reason. If contentType is null the
- * content type is assumed to be text/html
+ * second packet is delayed for any reason.
*
- * $Parameters:
- * (int) s . . . The http socket.
+ * $Parameter:
* (HttpResponseNum) responseNum . . . The result code to send.
- * (const char *) contentType . . . . A string indicating the type.
- * (int) contentLength . . . . . . . . Content length. -1 if unknown.
- * (time_t) expire . . . . . . . . . . Expiration time (secs since 1970)
*
- * $Return: (int) . . . . Always 0
- *
- * $Errors: None
+ * $Return: (int) . . . . writing errors
*
****************************************************************************/
-static int sendHeaders(int s, HttpResponseNum responseNum ,
- const char *contentType,
- int contentLength, time_t expire)
+static int sendHeaders(HttpResponseNum responseNum)
{
- char buf[1200];
+ char *buf = config->buf;
const char *responseString = "";
const char *infoString = 0;
unsigned int i;
time_t timer = time(0);
char timeStr[80];
- for (i=0;
- i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++)
- {
- if (httpResponseNames[i].type != responseNum) continue;
- responseString = httpResponseNames[i].name;
- infoString = httpResponseNames[i].info;
- break;
+ int len;
+
+ for (i = 0;
+ i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++) {
+ if (httpResponseNames[i].type == responseNum) {
+ responseString = httpResponseNames[i].name;
+ infoString = httpResponseNames[i].info;
+ break;
+ }
}
- if (infoString || !contentType)
- {
- contentType = "text/html";
+ if (responseNum != HTTP_OK) {
+ config->found_mime_type = "text/html"; // error message is HTML
}
-
- sprintf(buf, "HTTP/1.0 %d %s\nContent-type: %s\r\n",
- responseNum, responseString, contentType);
/* emit the current date */
- strftime(timeStr, sizeof(timeStr),
- "%a, %d %b %Y %H:%M:%S GMT",gmtime(&timer));
- sprintf(buf+strlen(buf), "Date: %s\r\n", timeStr);
- sprintf(buf+strlen(buf), "Connection: close\r\n");
- if (expire)
- {
- strftime(timeStr, sizeof(timeStr),
- "%a, %d %b %Y %H:%M:%S GMT",gmtime(&expire));
- sprintf(buf+strlen(buf), "Expire: %s\r\n", timeStr);
- }
+ strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
+ len = sprintf(buf,
+ "HTTP/1.0 %d %s\nContent-type: %s\r\n"
+ "Date: %s\r\nConnection: close\r\n",
+ responseNum, responseString, config->found_mime_type, timeStr);
- if (responseNum == HTTP_UNAUTHORIZED)
- {
- sprintf(buf+strlen(buf),
- "WWW-Authenticate: Basic realm=\"%s\"\r\n", realm);
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ if (responseNum == HTTP_UNAUTHORIZED) {
+ len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
+ config->realm);
}
- if (contentLength != -1)
- {
- int len = strlen(buf);
- sprintf(buf+len,"Content-length: %d\r\n", contentLength);
+#endif
+ if (config->ContentLength != -1) { /* file */
+ strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
+ len += sprintf(buf+len, "Last-Modified: %s\r\n%s " cont_l_fmt "\r\n",
+ timeStr, Content_length, config->ContentLength);
}
- strcat(buf,"\r\n");
- if (infoString)
- {
- sprintf(buf+strlen(buf),
+ strcat(buf, "\r\n");
+ len += 2;
+ if (infoString) {
+ len += sprintf(buf+len,
"<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
"<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
responseNum, responseString,
- responseNum, responseString,
- infoString);
+ responseNum, responseString, infoString);
}
#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"Headers:'%s'", buf);
+ if (config->debugHttpd) fprintf(stderr, "Headers: '%s'", buf);
#endif
- sendBuf(s, buf,-1);
- return 0;
+ return bb_full_write(a_c_w, buf, len);
}
/****************************************************************************
*
* Characters are read one at a time until an eol sequence is found.
*
- * $Parameters:
- * (int) s . . . . . The socket fildes.
- * (char *) buf . . Where to place the read result.
- * (int) maxBuf . . Maximum number of chars to fit in buf.
- *
* $Return: (int) . . . . number of characters read. -1 if error.
*
****************************************************************************/
-static int getLine(int s, char *buf, int maxBuf)
+static int getLine(void)
{
int count = 0;
- while (recv(s, buf+count, 1, 0) == 1)
- {
+ char *buf = config->buf;
+
+ while (read(a_c_r, buf + count, 1) == 1) {
if (buf[count] == '\r') continue;
- if (buf[count] == '\n')
- {
+ if (buf[count] == '\n') {
buf[count] = 0;
return count;
}
- count++;
+ if(count < (MAX_MEMORY_BUFF-1)) /* check owerflow */
+ count++;
}
if (count) return count;
else return -1;
}
+#ifdef CONFIG_FEATURE_HTTPD_CGI
/****************************************************************************
*
> $Function: sendCgi()
* data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
*
* $Parameters:
- * (int ) s . . . . . . . . The session socket.
- * (const char *) url . . . The requested URL (with leading /).
- * (const char *urlArgs). . Any URL arguments.
- * (const char *body) . . . POST body contents.
- * (int bodyLen) . . . . . Length of the post body.
-
+ * (const char *) url . . . . . . The requested URL (with leading /).
+ * (const char *urlArgs). . . . . Any URL arguments.
+ * (int bodyLen) . . . . . . . . Length of the post body.
+ * (const char *cookie) . . . . . For set HTTP_COOKIE.
+ * (const char *content_type) . . For set CONTENT_TYPE.
+
*
* $Return: (char *) . . . . A pointer to the decoded string (same as input).
*
* $Errors: None
*
****************************************************************************/
-static int sendCgi(int s, const char *url,
- const char *request, const char *urlArgs,
- const char *body, int bodyLen)
+static int sendCgi(const char *url,
+ const char *request, const char *urlArgs,
+ int bodyLen, const char *cookie,
+ const char *content_type)
{
int fromCgi[2]; /* pipe for reading data from CGI */
int toCgi[2]; /* pipe for sending data to CGI */
-
- char *argp[] = { 0, 0 };
- int pid=0;
- int inFd=inFd;
+
+ static char * argp[] = { 0, 0 };
+ int pid = 0;
+ int inFd;
int outFd;
- int firstLine=1;
+ int firstLine = 1;
- do
- {
- if (pipe(fromCgi) != 0)
- {
+ do {
+ if (pipe(fromCgi) != 0) {
break;
}
- if (pipe(toCgi) != 0)
- {
+ if (pipe(toCgi) != 0) {
break;
}
pid = fork();
- if (pid < 0)
- {
+ if (pid < 0) {
pid = 0;
- break;;
+ break;
}
-
- if (!pid)
- {
+
+ if (!pid) {
/* child process */
char *script;
- char *directory;
- inFd=toCgi[0];
- outFd=fromCgi[1];
+ char *purl = strdup( url );
+ char realpath_buff[MAXPATHLEN];
+
+ if(purl == NULL)
+ _exit(242);
+
+ inFd = toCgi[0];
+ outFd = fromCgi[1];
dup2(inFd, 0); // replace stdin with the pipe
dup2(outFd, 1); // replace stdout with the pipe
- if (!debugHttpd) dup2(outFd, 2); // replace stderr with the pipe
+
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ if (!config->debugHttpd)
+#endif
+ dup2(outFd, 2); // replace stderr with the pipe
+
close(toCgi[0]);
close(toCgi[1]);
close(fromCgi[0]);
close(fromCgi[1]);
-#if 0
- fcntl(0,F_SETFD, 1);
- fcntl(1,F_SETFD, 1);
- fcntl(2,F_SETFD, 1);
-#endif
-
- script = (char*) malloc(strlen(url)+2);
- if (!script) _exit(242);
- sprintf(script,".%s",url);
-
- envCount=0;
- addEnv("SCRIPT_NAME",script);
- addEnv("REQUEST_METHOD",request);
- addEnv("QUERY_STRING",urlArgs);
- addEnv("SERVER_SOFTWARE",httpdVersion);
- if (strncmpi(request,"POST",4)==0) addEnvCgi(body);
- else addEnvCgi(urlArgs);
-
/*
- * Most HTTP servers chdir to the cgi directory.
+ * Find PATH_INFO.
*/
- while (*url == '/') url++; // skip leading slash(s)
- directory = strdup( url );
- if ( directory == (char*) 0 )
- script = (char*) (url); /* ignore errors */
- else
- {
- script = strrchr( directory, '/' );
- if ( script == (char*) 0 )
- script = directory;
- else
- {
- *script++ = '\0';
- (void) chdir( directory ); /* ignore errors */
+ script = purl;
+ while((script = strchr( script + 1, '/' )) != NULL) {
+ /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
+ struct stat sb;
+
+ *script = '\0';
+ if(is_directory(purl + 1, 1, &sb) == 0) {
+ /* not directory, found script.cgi/PATH_INFO */
+ *script = '/';
+ break;
}
+ *script = '/'; /* is directory, find next '/' */
}
- // now run the program. If it fails, use _exit() so no destructors
- // get called and make a mess.
- execve(script, argp, envp);
-
-#ifdef DEBUG
- fprintf(stderr, "exec failed\n");
+ addEnv("PATH", "INFO", script); /* set /PATH_INFO or NULL */
+ addEnv("PATH", "", getenv("PATH"));
+ addEnv("REQUEST", "METHOD", request);
+ if(urlArgs) {
+ char *uri = alloca(strlen(purl) + 2 + strlen(urlArgs));
+ if(uri)
+ sprintf(uri, "%s?%s", purl, urlArgs);
+ addEnv("REQUEST", "URI", uri);
+ } else {
+ addEnv("REQUEST", "URI", purl);
+ }
+ if(script != NULL)
+ *script = '\0'; /* reduce /PATH_INFO */
+ /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
+ addEnv("SCRIPT_NAME", "", purl);
+ addEnv("QUERY_STRING", "", urlArgs);
+ addEnv("SERVER", "SOFTWARE", httpdVersion);
+ addEnv("SERVER", "PROTOCOL", "HTTP/1.0");
+ addEnv("GATEWAY_INTERFACE", "", "CGI/1.1");
+ addEnv("REMOTE", "ADDR", config->rmt_ip_str);
+#ifdef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
+ addEnvPort("REMOTE");
#endif
- close(2);
- close(1);
- close(0);
+ if(bodyLen) {
+ char sbl[32];
+
+ sprintf(sbl, "%d", bodyLen);
+ addEnv("CONTENT", "LENGTH", sbl);
+ }
+ if(cookie)
+ addEnv("HTTP", "COOKIE", cookie);
+ if(content_type)
+ addEnv("CONTENT", "TYPE", content_type);
+ if(config->remoteuser) {
+ addEnv("REMOTE", "USER", config->remoteuser);
+ addEnv("AUTH_TYPE", "", "Basic");
+ }
+ if(config->referer)
+ addEnv("HTTP", "REFERER", config->referer);
+
+ /* set execve argp[0] without path */
+ argp[0] = strrchr( purl, '/' ) + 1;
+ /* but script argp[0] must have absolute path and chdiring to this */
+ if(realpath(purl + 1, realpath_buff) != NULL) {
+ script = strrchr(realpath_buff, '/');
+ if(script) {
+ *script = '\0';
+ if(chdir(realpath_buff) == 0) {
+ *script = '/';
+ // now run the program. If it fails,
+ // use _exit() so no destructors
+ // get called and make a mess.
+ execv(realpath_buff, argp);
+ }
+ }
+ }
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ config->accepted_socket = 1; /* send to stdout */
+#endif
+ sendHeaders(HTTP_NOT_FOUND);
_exit(242);
} /* end child */
+ } while (0);
+
+ if (pid) {
/* parent process */
- inFd=fromCgi[0];
- outFd=toCgi[1];
+ int status;
+ size_t post_readed_size = 0, post_readed_idx = 0;
+
+ inFd = fromCgi[0];
+ outFd = toCgi[1];
close(fromCgi[1]);
close(toCgi[0]);
- if (body) write(outFd, body, bodyLen);
- close(outFd);
+ signal(SIGPIPE, SIG_IGN);
- } while (0);
-
- if (pid)
- {
- int status;
- pid_t dead_pid;
-
- while (1)
- {
- struct timeval timeout;
+ while (1) {
fd_set readSet;
- char buf[160];
+ fd_set writeSet;
+ char wbuf[128];
int nfound;
int count;
-
+
FD_ZERO(&readSet);
+ FD_ZERO(&writeSet);
FD_SET(inFd, &readSet);
-
+ if(bodyLen > 0 || post_readed_size > 0) {
+ FD_SET(outFd, &writeSet);
+ nfound = outFd > inFd ? outFd : inFd;
+ if(post_readed_size == 0) {
+ FD_SET(a_c_r, &readSet);
+ if(nfound < a_c_r)
+ nfound = a_c_r;
+ }
/* Now wait on the set of sockets! */
- timeout.tv_sec = 0;
- timeout.tv_usec = 10000;
- nfound = select(inFd+1, &readSet, 0, 0, &timeout);
-
- if (nfound <= 0)
- {
- dead_pid = waitpid(pid, &status, WNOHANG);
- if (dead_pid != 0)
- {
- close(fromCgi[0]);
- close(fromCgi[1]);
- close(toCgi[0]);
- close(toCgi[1]);
+ nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
+ } else {
+ if(!bodyLen) {
+ close(outFd);
+ bodyLen = -1;
+ }
+ nfound = select(inFd + 1, &readSet, 0, 0, NULL);
+ }
+
+ if (nfound <= 0) {
+ if (waitpid(pid, &status, WNOHANG) > 0) {
+ close(inFd);
#ifdef DEBUG
- if (debugHttpd)
- {
+ if (config->debugHttpd) {
if (WIFEXITED(status))
- fprintf(stderr,"piped has exited with status=%d\n", WEXITSTATUS(status));
+ bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
if (WIFSIGNALED(status))
- fprintf(stderr,"piped has exited with signal=%d\n", WTERMSIG(status));
+ bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
}
-#endif
- pid = -1;
+#endif
break;
}
- }
- else
- {
+ } else if(post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
+ count = bb_full_write(outFd, wbuf + post_readed_idx, post_readed_size);
+ if(count > 0) {
+ post_readed_size -= count;
+ post_readed_idx += count;
+ if(post_readed_size == 0)
+ post_readed_idx = 0;
+ }
+ } else if(bodyLen > 0 && post_readed_size == 0 && FD_ISSET(a_c_r, &readSet)) {
+ count = bodyLen > sizeof(wbuf) ? sizeof(wbuf) : bodyLen;
+ count = bb_full_read(a_c_r, wbuf, count);
+ if(count > 0) {
+ post_readed_size += count;
+ bodyLen -= count;
+ } else {
+ bodyLen = 0; /* closed */
+ }
+ } else if(FD_ISSET(inFd, &readSet)) {
+ int s = a_c_w;
+ char *rbuf = config->buf;
+
// There is something to read
- count = read(inFd,buf,sizeof(buf)-1);
- // If a read returns 0 at this point then some type of error has
- // occurred. Bail now.
- if (count == 0) break;
- if (count > 0)
- {
- if (firstLine)
- {
+ count = bb_full_read(inFd, rbuf, MAX_MEMORY_BUFF-1);
+ if (count == 0)
+ break; /* closed */
+ if (count > 0) {
+ if (firstLine) {
+ rbuf[count] = 0;
/* check to see if the user script added headers */
- if (strcmp(buf,"HTTP")!= 0)
- {
- write(s,"HTTP/1.0 200 OK\n", 16);
+ if(strncmp(rbuf, "HTTP/1.0 200 OK\n", 4) != 0) {
+ bb_full_write(s, "HTTP/1.0 200 OK\n", 16);
}
- if (strstr(buf,"ontent-") == 0)
- {
- write(s,"Content-type: text/plain\n\n", 26);
+ if (strstr(rbuf, "ontent-") == 0) {
+ bb_full_write(s, "Content-type: text/plain\n\n", 26);
}
-
- firstLine=0;
+ firstLine = 0;
}
- write(s,buf,count);
+ bb_full_write(s, rbuf, count);
#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"cgi read %d bytes\n", count);
+ if (config->debugHttpd)
+ fprintf(stderr, "cgi read %d bytes\n", count);
#endif
}
}
}
return 0;
}
+#endif /* CONFIG_FEATURE_HTTPD_CGI */
/****************************************************************************
*
*
* $Description: Send a file response to an HTTP request
*
- * $Parameters:
- * (int) s . . . . . . . The http session socket.
+ * $Parameter:
* (const char *) url . . The URL requested.
*
* $Return: (int) . . . . . . Always 0.
*
****************************************************************************/
-static int sendFile(int s, const char *url)
+static int sendFile(const char *url)
{
- char *suffix = strrchr(url,'.');
- const char *content = "application/octet-stream";
+ char * suffix;
int f;
+ const char * const * table;
+ const char * try_suffix;
- if (suffix)
- {
- const char ** table;
- for (table = (const char **) &suffixTable[0];
- *table && (strstr(*table, suffix) == 0); table+=2);
- if (table) content = *(table+1);
+ suffix = strrchr(url, '.');
+
+ for (table = suffixTable; *table; table += 2)
+ if(suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
+ try_suffix += strlen(suffix);
+ if(*try_suffix == 0 || *try_suffix == '.')
+ break;
+ }
+ /* also, if not found, set default as "application/octet-stream"; */
+ config->found_mime_type = *(table+1);
+#ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ if (suffix) {
+ Htaccess * cur;
+
+ for (cur = config->mime_a; cur; cur = cur->next) {
+ if(strcmp(cur->before_colon, suffix) == 0) {
+ config->found_mime_type = cur->after_colon;
+ break;
+ }
+ }
}
-
- if (*url == '/') url++;
- suffix = strchr(url,'?');
- if (suffix) *suffix = 0;
+#endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
#ifdef DEBUG
- fprintf(stderr,"Sending file '%s'\n", url);
+ if (config->debugHttpd)
+ fprintf(stderr, "Sending file '%s' Content-type: %s\n",
+ url, config->found_mime_type);
#endif
-
- f = open(url,O_RDONLY, 0444);
- if (f >= 0)
- {
- char buf[1450];
- int count;
- sendHeaders(s, HTTP_OK, content, -1, 0 );
- while ((count = read(f, buf, sizeof(buf))))
- {
- sendBuf(s, buf, count);
- }
- close(f);
- }
- else
- {
+
+ f = open(url, O_RDONLY);
+ if (f >= 0) {
+ int count;
+ char *buf = config->buf;
+
+ sendHeaders(HTTP_OK);
+ while ((count = bb_full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
+ bb_full_write(a_c_w, buf, count);
+ }
+ close(f);
+ } else {
#ifdef DEBUG
- fprintf(stderr,"Unable to open '%s'\n", url);
+ if (config->debugHttpd)
+ bb_perror_msg("Unable to open '%s'", url);
#endif
- sendHeaders(s, HTTP_NOT_FOUND, "text/html", -1, 0);
+ sendHeaders(HTTP_NOT_FOUND);
}
-
+
return 0;
}
+static int checkPermIP(void)
+{
+ Htaccess_IP * cur;
+
+ /* This could stand some work */
+ for (cur = config->ip_a_d; cur; cur = cur->next) {
+#ifdef DEBUG
+ if (config->debugHttpd) {
+ fprintf(stderr, "checkPermIP: '%s' ? ", config->rmt_ip_str);
+ fprintf(stderr, "'%u.%u.%u.%u/%u.%u.%u.%u'\n",
+ (unsigned char)(cur->ip >> 24),
+ (unsigned char)(cur->ip >> 16),
+ (unsigned char)(cur->ip >> 8),
+ cur->ip & 0xff,
+ (unsigned char)(cur->mask >> 24),
+ (unsigned char)(cur->mask >> 16),
+ (unsigned char)(cur->mask >> 8),
+ cur->mask & 0xff);
+ }
+#endif
+ if((config->rmt_ip & cur->mask) == cur->ip)
+ return cur->allow_deny == 'A'; /* Allow/Deny */
+ }
+
+ /* if uncofigured, return 1 - access from all */
+ return !config->flg_deny_all;
+}
+
/****************************************************************************
*
> $Function: checkPerm()
*
- * $Description: Check the permission file for access.
+ * $Description: Check the permission file for access password protected.
*
- * Both IP addresses as well as url pathnames can be specified. If an IP
- * address check is desired, the 'path' should be specified as "ip" and the
- * dotted decimal IP address placed in request.
- *
- * For url pathnames, place the url (with leading /) in 'path' and any
- * authentication information in request. e.g. "user:pass"
- *
- *******
- *
- * Keep the algorithm simple.
* If config file isn't present, everything is allowed.
- * Run down /etc/httpd.hosts a line at a time.
- * Stop if match is found.
- * Entries are of the form:
- * ip:10.10 # any address that begins with 10.10
- * dir:user:pass # dir security for dirs that start with 'dir'
- *
- * httpd.conf has the following format:
- * ip:10.10. # Allow any address that begins with 10.10.
- * ip:172.20. # Allow 172.20.x.x
- * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin
- * /:foo:bar # Require user foo, pwd bar on urls starting with /
- *
- * To open up the server:
- * ip:* # Allow any IP address
- * /:* # no password required for urls starting with / (all)
+ * Entries are of the form you can see example from header source
*
* $Parameters:
- * (const char *) path . . . . The file path or "ip" for ip addresses.
+ * (const char *) path . . . . The file path.
* (const char *) request . . . User information to validate.
*
* $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
*
****************************************************************************/
+
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
static int checkPerm(const char *path, const char *request)
{
- FILE *f=NULL;
- int rval;
- char buf[80];
- char *p;
- int ipaddr=0;
-
- /* If httpd.conf not there assume anyone can get in */
- if (configFile) f = fopen(configFile,"r");
- if(f == NULL) f = fopen("/etc/httpd.conf","r");
- if(f == NULL) f = fopen("httpd.conf","r");
- if(f == NULL) {
- return(1);
- }
- if (strcmp("ip",path) == 0) ipaddr=1;
+ Htaccess * cur;
+ const char *p;
+ const char *p0;
- rval=0;
+ const char *prev = NULL;
/* This could stand some work */
- while ( fgets(buf, 80, f) != NULL)
- {
- if(buf[0] == '#') continue;
- if(buf[0] == '\0') continue;
- for(p = buf + (strlen(buf) - 1); p >= buf; p--)
- {
- if(isspace(*p)) *p = 0;
- }
-
- p = strchr(buf,':');
- if (!p) continue;
- *p++=0;
+ for (cur = config->auth; cur; cur = cur->next) {
+ p0 = cur->before_colon;
+ if(prev != NULL && strcmp(prev, p0) != 0)
+ continue; /* find next identical */
+ p = cur->after_colon;
#ifdef DEBUG
- fprintf(stderr,"checkPerm: '%s' ? '%s'\n",buf,path);
+ if (config->debugHttpd)
+ fprintf(stderr,"checkPerm: '%s' ? '%s'\n", p0, request);
#endif
- if((ipaddr ? strcmp(buf,path) : strncmp(buf, path, strlen(buf))) == 0)
{
- /* match found. Check request */
- if ((strcmp("*",p) == 0) ||
- (strcmp(p, request) == 0) ||
- (ipaddr && (strncmp(p, request, strlen(p)) == 0)))
- {
- rval = 1;
- break;
- }
+ int l = strlen(p0);
- /* reject on first failure for non ipaddresses */
- if (!ipaddr) break;
+ if(strncmp(p0, path, l) == 0 &&
+ (l == 1 || path[l] == '/' || path[l] == 0)) {
+ char *u;
+ /* path match found. Check request */
+ /* for check next /path:user:password */
+ prev = p0;
+ u = strchr(request, ':');
+ if(u == NULL) {
+ /* bad request, ':' required */
+ break;
+ }
+
+#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+ {
+ char *cipher;
+ char *pp;
+
+ if(strncmp(p, request, u-request) != 0) {
+ /* user uncompared */
+ continue;
+ }
+ pp = strchr(p, ':');
+ if(pp && pp[1] == '$' && pp[2] == '1' &&
+ pp[3] == '$' && pp[4]) {
+ pp++;
+ cipher = pw_encrypt(u+1, pp);
+ if (strcmp(cipher, pp) == 0)
+ goto set_remoteuser_var; /* Ok */
+ /* unauthorized */
+ continue;
+ }
+ }
+#endif
+ if (strcmp(p, request) == 0) {
+#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+set_remoteuser_var:
+#endif
+ config->remoteuser = strdup(request);
+ if(config->remoteuser)
+ config->remoteuser[(u - request)] = 0;
+ return 1; /* Ok */
+ }
+ /* unauthorized */
+ }
}
- };
- fclose(f);
- return(rval);
-};
+ } /* for */
+
+ return prev == NULL;
+}
+
+#endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
/****************************************************************************
*
* $Description: Handle an incoming http request.
*
- * $Parameters:
- * (s) s . . . . . The http request socket.
- *
- * $Return: (int) . . . Always 0.
- *
****************************************************************************/
-static int handleIncoming(int s)
+static void handleIncoming(void)
{
- char buf[8192];
- char url[8192]; /* hold args too initially */
- char credentials[80];
- char request[20];
- long length=0;
- int major;
- int minor;
+ char *buf = config->buf;
+ char *url;
+ char *purl;
+ int blank = -1;
char *urlArgs;
- char *body=0;
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ const char *prequest = request_GET;
+ long length=0;
+ char *cookie = 0;
+ char *content_type = 0;
+#endif
+ char *test;
+ struct stat sb;
+ int ip_allowed;
- credentials[0] = 0;
- do
- {
- int count = getLine(s, buf, sizeof(buf));
- int blank;
- if (count <= 0) break;
- count = sscanf(buf, "%9s %1000s HTTP/%d.%d", request,
- url, &major, &minor);
-
- if (count < 2)
- {
- /* Garbled request/URL */
-#if 0
- genHttpHeader(&requestInfo,
- HTTP_BAD_REQUEST, requestInfo.dataType,
- HTTP_LENGTH_UNKNOWN);
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ int credentials = -1; /* if not requred this is Ok */
#endif
+
+ do {
+ int count;
+
+ if (getLine() <= 0)
+ break; /* closed */
+
+ purl = strpbrk(buf, " \t");
+ if(purl == NULL) {
+BAD_REQUEST:
+ sendHeaders(HTTP_BAD_REQUEST);
break;
}
-
- /* If no version info, assume 0.9 */
- if (count != 4)
- {
- major = 0;
- minor = 9;
+ *purl = 0;
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ if(strcasecmp(buf, prequest) != 0) {
+ prequest = "POST";
+ if(strcasecmp(buf, prequest) != 0) {
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ break;
+ }
}
+#else
+ if(strcasecmp(buf, request_GET) != 0) {
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ break;
+ }
+#endif
+ *purl = ' ';
+ count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
+ decodeString(buf, 0);
+ if (count < 1 || buf[0] != '/') {
+ /* Garbled request/URL */
+ goto BAD_REQUEST;
+ }
+ url = alloca(strlen(buf) + 12); /* + sizeof("/index.html\0") */
+ if(url == NULL) {
+ sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
+ break;
+ }
+ strcpy(url, buf);
/* extract url args if present */
- urlArgs = strchr(url,'?');
+ urlArgs = strchr(url, '?');
if (urlArgs)
- {
- *urlArgs=0;
- urlArgs++;
+ *urlArgs++ = 0;
+
+ /* algorithm stolen from libbb bb_simplify_path(),
+ but don`t strdup and reducing trailing slash and protect out root */
+ purl = test = url;
+
+ do {
+ if (*purl == '/') {
+ if (*test == '/') { /* skip duplicate (or initial) slash */
+ continue;
+ } else if (*test == '.') {
+ if (test[1] == '/' || test[1] == 0) { /* skip extra '.' */
+ continue;
+ } else if ((test[1] == '.') && (test[2] == '/' || test[2] == 0)) {
+ ++test;
+ if (purl == url) {
+ /* protect out root */
+ goto BAD_REQUEST;
+ }
+ while (*--purl != '/'); /* omit previous dir */
+ continue;
+ }
+ }
+ }
+ *++purl = *test;
+ } while (*++test);
+
+ *++purl = 0; /* so keep last character */
+ test = purl; /* end ptr */
+
+ /* If URL is directory, adding '/' */
+ if(test[-1] != '/') {
+ if ( is_directory(url + 1, 1, &sb) ) {
+ *test++ = '/';
+ *test = 0;
+ purl = test; /* end ptr */
+ }
}
-
#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"url='%s', args=%s\n", url, urlArgs);
-#endif
-
- // read until blank line(s)
- blank = 0;
- while ((count = getLine(s, buf, sizeof(buf))) >= 0)
- {
- if (count == 0)
- {
- if (major > 0) break;
- blank++;
- if (blank == 2) break;
- }
+ if (config->debugHttpd)
+ fprintf(stderr, "url='%s', args=%s\n", url, urlArgs);
+#endif
+
+ test = url;
+ ip_allowed = checkPermIP();
+ while(ip_allowed && (test = strchr( test + 1, '/' )) != NULL) {
+ /* have path1/path2 */
+ *test = '\0';
+ if( is_directory(url + 1, 1, &sb) ) {
+ /* may be having subdir config */
+ parse_conf(url + 1, SUBDIR_PARSE);
+ ip_allowed = checkPermIP();
+ }
+ *test = '/';
+ }
+
+ // read until blank line for HTTP version specified, else parse immediate
+ while (blank >= 0 && (count = getLine()) > 0) {
+
#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"Header: '%s'\n", buf);
-#endif
+ if (config->debugHttpd) fprintf(stderr, "Header: '%s'\n", buf);
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_CGI
/* try and do our best to parse more lines */
- if ((strncmpi(buf, "Content-length:", 15) == 0))
- {
- sscanf(buf, "%*s %ld", &length);
- }
+ if ((strncasecmp(buf, Content_length, 15) == 0)) {
+ if(prequest != request_GET)
+ length = strtol(buf + 15, 0, 0); // extra read only for POST
+ } else if ((strncasecmp(buf, "Cookie:", 7) == 0)) {
+ for(test = buf + 7; isspace(*test); test++)
+ ;
+ cookie = strdup(test);
+ } else if ((strncasecmp(buf, "Content-Type:", 13) == 0)) {
+ for(test = buf + 13; isspace(*test); test++)
+ ;
+ content_type = strdup(test);
+ } else if ((strncasecmp(buf, "Referer:", 8) == 0)) {
+ for(test = buf + 8; isspace(*test); test++)
+ ;
+ config->referer = strdup(test);
+ }
+#endif
+
#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
- else if (strncmpi(buf, "Authorization:", 14) == 0)
- {
+ if (strncasecmp(buf, "Authorization:", 14) == 0) {
/* We only allow Basic credentials.
* It shows up as "Authorization: Basic <userid:password>" where
* the userid:password is base64 encoded.
*/
- char *ptr = buf+14;
- while (*ptr == ' ') ptr++;
- if (strncmpi(ptr, "Basic", 5) != 0) break;
- ptr += 5;
- while (*ptr == ' ') ptr++;
- memset(credentials, 0, sizeof(credentials));
- decodeBase64(credentials,
- sizeof(credentials)-1,
- ptr,
- strlen(ptr) );
-
+ for(test = buf + 14; isspace(*test); test++)
+ ;
+ if (strncasecmp(test, "Basic", 5) != 0)
+ continue;
+
+ test += 5; /* decodeBase64() skiping space self */
+ decodeBase64(test);
+ credentials = checkPerm(url, test);
}
- }
- if (!checkPerm(url, credentials))
- {
- sendHeaders(s, HTTP_UNAUTHORIZED, 0, -1, 0);
- length=-1;
- break; /* no more processing */
- }
-#else
- }
-#endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
+#endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
- /* we are done if an error occurred */
- if (length == -1) break;
+ } /* while extra header reading */
- if (strcmp(url,"/") == 0) strcpy(url,"/index.html");
- if (length>0)
- {
- body=(char*) malloc(length+1);
- if (body)
- {
- length = read(s,body,length);
- body[length]=0; // always null terminate for safety
- urlArgs=body;
- }
- }
-
- if (strstr(url,"..") || strstr(url, "httpd.conf"))
- {
- /* protect from .. path creep */
- sendHeaders(s, HTTP_NOT_FOUND, "text/html", -1, 0);
- }
- else if (strstr(url,"cgi-bin"))
- {
- sendCgi(s, url, request, urlArgs, body, length);
+ if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
+ /* protect listing [/path]/httpd_conf or IP deny */
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+FORBIDDEN: /* protect listing /cgi-bin */
+#endif
+ sendHeaders(HTTP_FORBIDDEN);
+ break;
}
- else if (strncmpi(request,"GET",3) == 0)
- {
- sendFile(s, url);
+
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ if (credentials <= 0 && checkPerm(url, ":") == 0) {
+ sendHeaders(HTTP_UNAUTHORIZED);
+ break;
}
- else
- {
- sendHeaders(s, HTTP_NOT_IMPLEMENTED, 0, -1, 0);
+#endif
+
+ test = url + 1; /* skip first '/' */
+
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ /* if strange Content-Length */
+ if (length < 0)
+ break;
+
+ if (strncmp(test, "cgi-bin", 7) == 0) {
+ if(test[7] == '/' && test[8] == 0)
+ goto FORBIDDEN; // protect listing cgi-bin/
+ sendCgi(url, prequest, urlArgs, length, cookie, content_type);
+ } else {
+ if (prequest != request_GET)
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ else {
+#endif /* CONFIG_FEATURE_HTTPD_CGI */
+ if(purl[-1] == '/')
+ strcpy(purl, "index.html");
+ if ( stat(test, &sb ) == 0 ) {
+ config->ContentLength = sb.st_size;
+ config->last_mod = sb.st_mtime;
+ }
+ sendFile(test);
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ /* unset if non inetd looped */
+ config->ContentLength = -1;
+#endif
+
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ }
}
+#endif
+
} while (0);
-#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"closing socket\n");
-#endif
- if (body) free(body);
- shutdown(s,SHUT_WR);
- shutdown(s,SHUT_RD);
- close(s);
-
- return 0;
+
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+/* from inetd don`t looping: freeing, closing automatic from exit always */
+# ifdef DEBUG
+ if (config->debugHttpd) fprintf(stderr, "closing socket\n");
+# endif
+# ifdef CONFIG_FEATURE_HTTPD_CGI
+ free(cookie);
+ free(content_type);
+ free(config->remoteuser);
+ free(config->referer);
+# endif
+ shutdown(a_c_w, SHUT_WR);
+ shutdown(a_c_r, SHUT_RD);
+ close(config->accepted_socket);
+#endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
}
/****************************************************************************
* $Return: (int) . . . . Always 0.
*
****************************************************************************/
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
static int miniHttpd(int server)
{
fd_set readfd, portfd;
- int nfound;
-
+
FD_ZERO(&portfd);
FD_SET(server, &portfd);
-
+
/* copy the ports we are watching to the readfd set */
- while (1)
- {
- readfd = portfd ;
-
+ while (1) {
+ readfd = portfd;
+
/* Now wait INDEFINATELY on the set of sockets! */
- nfound = select(server+1, &readfd, 0, 0, 0);
-
- switch (nfound)
- {
- case 0:
- /* select timeout error! */
- break ;
- case -1:
- /* select error */
- break;
- default:
- if (FD_ISSET(server, &readfd))
- {
- char on;
+ if (select(server + 1, &readfd, 0, 0, 0) > 0) {
+ if (FD_ISSET(server, &readfd)) {
+ int on;
struct sockaddr_in fromAddr;
- char rmt_ip[20];
- int addr;
+
socklen_t fromAddrLen = sizeof(fromAddr);
int s = accept(server,
- (struct sockaddr *)&fromAddr, &fromAddrLen) ;
- if (s < 0)
- {
- continue;
+ (struct sockaddr *)&fromAddr, &fromAddrLen);
+
+ if (s < 0) {
+ continue;
}
- addr = ntohl(fromAddr.sin_addr.s_addr);
- sprintf(rmt_ip,"%u.%u.%u.%u",
- (unsigned char)(addr >> 24),
- (unsigned char)(addr >> 16),
- (unsigned char)(addr >> 8),
- (unsigned char)(addr >> 0));
+ config->accepted_socket = s;
+ config->rmt_ip = ntohl(fromAddr.sin_addr.s_addr);
+#if defined(CONFIG_FEATURE_HTTPD_CGI) || defined(DEBUG)
+ sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
+ (unsigned char)(config->rmt_ip >> 24),
+ (unsigned char)(config->rmt_ip >> 16),
+ (unsigned char)(config->rmt_ip >> 8),
+ config->rmt_ip & 0xff);
+ config->port = ntohs(fromAddr.sin_port);
#ifdef DEBUG
- if (debugHttpd)
- {
- fprintf(stderr,"httpMini.cpp: connection from IP=%s, port %d\n",
- rmt_ip, ntohs(fromAddr.sin_port));
- }
-#endif
- if(checkPerm("ip", rmt_ip) == 0)
- {
- close(s);
- continue;
+ if (config->debugHttpd) {
+ bb_error_msg("connection from IP=%s, port %u\n",
+ config->rmt_ip_str, config->port);
}
-
+#endif
+#endif /* CONFIG_FEATURE_HTTPD_CGI */
+
/* set the KEEPALIVE option to cull dead connections */
on = 1;
- setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *) &on,
- sizeof (on));
+ setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof (on));
- if (fork() == 0)
- {
- /* This is the spawned thread */
- handleIncoming(s);
- exit(0);
+ if (config->debugHttpd || fork() == 0) {
+ /* This is the spawned thread */
+#ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+ /* protect reload config, may be confuse checking */
+ signal(SIGHUP, SIG_IGN);
+#endif
+ handleIncoming();
+ if(!config->debugHttpd)
+ exit(0);
}
close(s);
}
return 0;
}
+#else
+ /* from inetd */
+
+static int miniHttpd(void)
+{
+ struct sockaddr_in fromAddrLen;
+ socklen_t sinlen = sizeof (struct sockaddr_in);
+
+ getpeername (0, (struct sockaddr *)&fromAddrLen, &sinlen);
+ config->rmt_ip = ntohl(fromAddrLen.sin_addr.s_addr);
+#if defined(CONFIG_FEATURE_HTTPD_CGI) || defined(DEBUG)
+ sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
+ (unsigned char)(config->rmt_ip >> 24),
+ (unsigned char)(config->rmt_ip >> 16),
+ (unsigned char)(config->rmt_ip >> 8),
+ config->rmt_ip & 0xff);
+#endif
+ config->port = ntohs(fromAddrLen.sin_port);
+ handleIncoming();
+ return 0;
+}
+#endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
+
+#ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+static void sighup_handler(int sig)
+{
+ /* set and reset */
+ struct sigaction sa;
+
+ parse_conf(default_path_httpd_conf,
+ sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
+ sa.sa_handler = sighup_handler;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART;
+ sigaction(SIGHUP, &sa, NULL);
+}
+#endif
+
+
+static const char httpd_opts[]="c:d:h:"
+#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+ "e:"
+#define OPT_INC_1 1
+#else
+#define OPT_INC_1 0
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ "r:"
+# ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+ "m:"
+# define OPT_INC_2 2
+# else
+# define OPT_INC_2 1
+#endif
+#else
+#define OPT_INC_2 0
+#endif
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ "p:v"
+#ifdef CONFIG_FEATURE_HTTPD_SETUID
+ "u:"
+#endif
+#endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
+ ;
+
+#define OPT_CONFIG_FILE (1<<0)
+#define OPT_DECODE_URL (1<<1)
+#define OPT_HOME_HTTPD (1<<2)
+#define OPT_ENCODE_URL (1<<(2+OPT_INC_1))
+#define OPT_REALM (1<<(3+OPT_INC_1))
+#define OPT_MD5 (1<<(4+OPT_INC_1))
+#define OPT_PORT (1<<(3+OPT_INC_1+OPT_INC_2))
+#define OPT_DEBUG (1<<(4+OPT_INC_1+OPT_INC_2))
+#define OPT_SETUID (1<<(5+OPT_INC_1+OPT_INC_2))
+
+
+#ifdef HTTPD_STANDALONE
+int main(int argc, char *argv[])
+#else
int httpd_main(int argc, char *argv[])
+#endif
{
+ unsigned long opt;
+ const char *home_httpd = home;
+ char *url_for_decode;
+#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+ const char *url_for_encode;
+#endif
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ const char *s_port;
+#endif
+
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
int server;
- int port = 80;
- int c;
-
- /* check if user supplied a port number */
- for (;;) {
- c = getopt( argc, argv, "p:ve:d:"
+#endif
+
+#ifdef CONFIG_FEATURE_HTTPD_SETUID
+ const char *s_uid;
+ long uid = -1;
+#endif
+
+#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+ const char *pass;
+#endif
+
+ config = xcalloc(1, sizeof(*config));
#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
- "r:c:"
+ config->realm = "Web Server Authentication";
+#endif
+
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ config->port = 80;
+#endif
+
+ config->ContentLength = -1;
+
+ opt = bb_getopt_ulflags(argc, argv, httpd_opts,
+ &(config->configFile), &url_for_decode, &home_httpd
+#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+ , &url_for_encode
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
+ , &(config->realm)
+# ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+ , &pass
+# endif
+#endif
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ , &s_port
+#ifdef CONFIG_FEATURE_HTTPD_SETUID
+ , &s_uid
+#endif
#endif
);
- if (c == EOF) break;
- switch (c) {
- case 'v':
- debugHttpd=1;
- break;
- case 'p':
- port = atoi(optarg);
- break;
- case 'd':
- printf("%s",decodeString(optarg));
+
+ if(opt & OPT_DECODE_URL) {
+ printf("%s", decodeString(url_for_decode, 1));
return 0;
- case 'e':
- printf("%s",encodeString(optarg));
+ }
+#ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
+ if(opt & OPT_ENCODE_URL) {
+ printf("%s", encodeString(url_for_encode));
return 0;
- case 'r':
- realm = optarg;
- break;
- case 'c':
- configFile = optarg;
- break;
- default:
- fprintf(stderr,"%s\n", httpdVersion);
- show_usage();
- exit(1);
- }
}
+#endif
+#ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
+ if(opt & OPT_MD5) {
+ printf("%s\n", pw_encrypt(pass, "$1$"));
+ return 0;
+ }
+#endif
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ if(opt & OPT_PORT)
+ config->port = bb_xgetlarg(s_port, 10, 1, 0xffff);
+ config->debugHttpd = opt & OPT_DEBUG;
+#ifdef CONFIG_FEATURE_HTTPD_SETUID
+ if(opt & OPT_SETUID) {
+ char *e;
- envp = (char**) malloc((ENVSIZE+1)*sizeof(char*));
- if (envp == 0) perror_exit("envp alloc");
-
- server = openServer(port);
- if (server < 0) exit(1);
+ uid = strtol(s_uid, &e, 0);
+ if(*e != '\0') {
+ /* not integer */
+ uid = my_getpwnam(s_uid);
+ }
+ }
+#endif
+#endif
- if (!debugHttpd)
- {
- /* remember our current pwd, daemonize, chdir back */
- char *dir = (char *) malloc(256);
- if (dir == 0) perror_exit("out of memory for getpwd");
- if (getcwd(dir, 256) == 0) perror_exit("getcwd failed");
- if (daemon(0, 1) < 0) perror_exit("daemon");
- chdir(dir);
- free(dir);
+ if(chdir(home_httpd)) {
+ bb_perror_msg_and_die("can`t chdir to %s", home_httpd);
}
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ server = openServer();
+# ifdef CONFIG_FEATURE_HTTPD_SETUID
+ /* drop privilegies */
+ if(uid > 0)
+ setuid(uid);
+# endif
+#endif
- miniHttpd(server);
-
- return 0;
-}
+#ifdef CONFIG_FEATURE_HTTPD_CGI
+ {
+ char *p = getenv("PATH");
+ if(p) {
+ p = bb_xstrdup(p);
+ }
+ clearenv();
+ if(p)
+ setenv("PATH", p, 1);
+# ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ addEnvPort("SERVER");
+# endif
+ }
+#endif
-#ifdef HTTPD_STANDALONE
-int main(int argc, char *argv[])
-{
- return httpd_main(argc, argv);
-}
+#ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+ sighup_handler(0);
+#else
+ parse_conf(default_path_httpd_conf, FIRST_PARSE);
+#endif
+#ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
+ if (!config->debugHttpd) {
+ if (daemon(1, 0) < 0) /* don`t change curent directory */
+ bb_perror_msg_and_die("daemon");
+ }
+ return miniHttpd(server);
+#else
+ return miniHttpd();
#endif
+}
projects / oweals / busybox.git / blobdiff